aarch64: add armv8 CPU flag
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89
90 Licensing options:
91   --enable-gpl             allow use of GPL code, the resulting libs
92                            and binaries will be under GPL [no]
93   --enable-version3        upgrade (L)GPL to version 3 [no]
94   --enable-nonfree         allow use of nonfree code, the resulting libs
95                            and binaries will be unredistributable [no]
96
97 Configuration options:
98   --disable-static         do not build static libraries [no]
99   --enable-shared          build shared libraries [no]
100   --enable-small           optimize for size instead of speed
101   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
102   --enable-gray            enable full grayscale support (slower color)
103   --disable-swscale-alpha  disable alpha channel support in swscale
104   --disable-all            disable building components, libraries and programs
105
106 Program options:
107   --disable-programs       do not build command line programs
108   --disable-avconv         disable avconv build
109   --disable-avplay         disable avplay build
110   --disable-avprobe        disable avprobe build
111   --disable-avserver       disable avserver build
112
113 Component options:
114   --disable-doc            do not build documentation
115   --disable-avdevice       disable libavdevice build
116   --disable-avcodec        disable libavcodec build
117   --disable-avformat       disable libavformat build
118   --disable-avutil         disable libavutil build
119   --disable-swscale        disable libswscale build
120   --disable-avfilter       disable video filter support [no]
121   --disable-avresample     disable libavresample build [no]
122   --disable-pthreads       disable pthreads [auto]
123   --disable-w32threads     disable Win32 threads [auto]
124   --disable-network        disable network support [no]
125   --disable-dct            disable DCT code
126   --disable-error-resilience disable error resilience code
127   --disable-lsp            disable LSP code
128   --disable-lzo            disable LZO decoder code
129   --disable-mdct           disable MDCT code
130   --disable-rdft           disable RDFT code
131   --disable-fft            disable FFT code
132
133 Hardware accelerators:
134   --enable-dxva2           enable DXVA2 code
135   --enable-vaapi           enable VAAPI code
136   --enable-vda             enable VDA code
137   --enable-vdpau           enable VDPAU code
138
139 Individual component options:
140   --disable-everything     disable all components listed below
141   --disable-encoder=NAME   disable encoder NAME
142   --enable-encoder=NAME    enable encoder NAME
143   --disable-encoders       disable all encoders
144   --disable-decoder=NAME   disable decoder NAME
145   --enable-decoder=NAME    enable decoder NAME
146   --disable-decoders       disable all decoders
147   --disable-hwaccel=NAME   disable hwaccel NAME
148   --enable-hwaccel=NAME    enable hwaccel NAME
149   --disable-hwaccels       disable all hwaccels
150   --disable-muxer=NAME     disable muxer NAME
151   --enable-muxer=NAME      enable muxer NAME
152   --disable-muxers         disable all muxers
153   --disable-demuxer=NAME   disable demuxer NAME
154   --enable-demuxer=NAME    enable demuxer NAME
155   --disable-demuxers       disable all demuxers
156   --enable-parser=NAME     enable parser NAME
157   --disable-parser=NAME    disable parser NAME
158   --disable-parsers        disable all parsers
159   --enable-bsf=NAME        enable bitstream filter NAME
160   --disable-bsf=NAME       disable bitstream filter NAME
161   --disable-bsfs           disable all bitstream filters
162   --enable-protocol=NAME   enable protocol NAME
163   --disable-protocol=NAME  disable protocol NAME
164   --disable-protocols      disable all protocols
165   --enable-indev=NAME      enable input device NAME
166   --disable-indev=NAME     disable input device NAME
167   --disable-indevs         disable input devices
168   --enable-outdev=NAME     enable output device NAME
169   --disable-outdev=NAME    disable output device NAME
170   --disable-outdevs        disable output devices
171   --disable-devices        disable all devices
172   --enable-filter=NAME     enable filter NAME
173   --disable-filter=NAME    disable filter NAME
174   --disable-filters        disable all filters
175
176 External library support:
177   --enable-avisynth        enable reading of AviSynth script files [no]
178   --enable-bzlib           enable bzlib [autodetect]
179   --enable-frei0r          enable frei0r video filtering
180   --enable-gnutls          enable gnutls [no]
181   --enable-libcdio         enable audio CD grabbing with libcdio
182   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
183                            and libraw1394 [no]
184   --enable-libfaac         enable AAC encoding via libfaac [no]
185   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
186   --enable-libfreetype     enable libfreetype [no]
187   --enable-libgsm          enable GSM de/encoding via libgsm [no]
188   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
189   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
190   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
191   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
192   --enable-libopencv       enable video filtering via libopencv [no]
193   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
194   --enable-libopus         enable Opus decoding via libopus [no]
195   --enable-libpulse        enable Pulseaudio input via libpulse [no]
196   --enable-librtmp         enable RTMP[E] support via librtmp [no]
197   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
198   --enable-libspeex        enable Speex de/encoding via libspeex [no]
199   --enable-libtheora       enable Theora encoding via libtheora [no]
200   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
201   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
202   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
203   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
204   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
205   --enable-libwebp         enable WebP encoding via libwebp [no]
206   --enable-libx264         enable H.264 encoding via x264 [no]
207   --enable-libx265         enable HEVC encoding via x265 [no]
208   --enable-libxavs         enable AVS encoding via xavs [no]
209   --enable-libxvid         enable Xvid encoding via xvidcore,
210                            native MPEG-4/Xvid encoder exists [no]
211   --enable-openssl         enable openssl [no]
212   --enable-x11grab         enable X11 grabbing [no]
213   --enable-zlib            enable zlib [autodetect]
214
215 Toolchain options:
216   --arch=ARCH              select architecture [$arch]
217   --cpu=CPU                select the minimum required CPU (affects
218                            instruction selection, may crash on older CPUs)
219   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
220   --enable-cross-compile   assume a cross-compiler is used
221   --sysroot=PATH           root of cross-build tree
222   --sysinclude=PATH        location of cross-build system headers
223   --target-os=OS           compiler targets OS [$target_os]
224   --target-exec=CMD        command to run executables on target
225   --target-path=DIR        path to view of build directory on target
226   --target-samples=DIR     path to samples directory on target
227   --toolchain=NAME         set tool defaults according to NAME
228   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
229   --nm=NM                  use nm tool
230   --ar=AR                  use archive tool AR [$ar_default]
231   --as=AS                  use assembler AS [$as_default]
232   --cc=CC                  use C compiler CC [$cc_default]
233   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
234   --ld=LD                  use linker LD
235   --pkg-config=PKGCONF     use pkg-config PKGCONF [$pkg_config_default]
236   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
237   --host-cc=HOSTCC         use host C compiler HOSTCC
238   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
239   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
240   --host-ld=HOSTLD         use host linker HOSTLD
241   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
242   --host-libs=HLIBS        use libs HLIBS when linking for host
243   --host-os=OS             compiler host OS [$target_os]
244   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
245   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
246   --extra-libs=ELIBS       add ELIBS [$ELIBS]
247   --extra-version=STRING   version string suffix []
248   --optflags=OPTFLAGS      override optimization-related compiler flags
249   --build-suffix=SUFFIX    library name suffix []
250   --enable-pic             build position-independent code
251   --enable-thumb           compile for Thumb instruction set
252   --enable-lto             use link-time optimization
253
254 Advanced options (experts only):
255   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
256   --disable-symver         disable symbol versioning
257   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
258   --disable-safe-bitstream-reader
259                            disable buffer boundary checking in bitreaders
260                            (faster, but may crash)
261   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
262   --enable-sram            allow use of on-chip SRAM
263
264 Optimization options (experts only):
265   --disable-asm            disable all assembler optimizations
266   --disable-altivec        disable AltiVec optimizations
267   --disable-amd3dnow       disable 3DNow! optimizations
268   --disable-amd3dnowext    disable 3DNow! extended optimizations
269   --disable-mmx            disable MMX optimizations
270   --disable-mmxext         disable MMXEXT optimizations
271   --disable-sse            disable SSE optimizations
272   --disable-sse2           disable SSE2 optimizations
273   --disable-sse3           disable SSE3 optimizations
274   --disable-ssse3          disable SSSE3 optimizations
275   --disable-sse4           disable SSE4 optimizations
276   --disable-sse42          disable SSE4.2 optimizations
277   --disable-avx            disable AVX optimizations
278   --disable-xop            disable XOP optimizations
279   --disable-fma3           disable FMA3 optimizations
280   --disable-fma4           disable FMA4 optimizations
281   --disable-avx2           disable AVX2 optimizations
282   --disable-armv5te        disable armv5te optimizations
283   --disable-armv6          disable armv6 optimizations
284   --disable-armv6t2        disable armv6t2 optimizations
285   --disable-vfp            disable VFP optimizations
286   --disable-neon           disable NEON optimizations
287   --disable-inline-asm     disable use of inline assembler
288   --disable-yasm           disable use of yasm assembler
289
290 Developer options (useful when working on Libav itself):
291   --disable-debug          disable debugging symbols
292   --enable-debug=LEVEL     set the debug level [$debuglevel]
293   --disable-optimizations  disable compiler optimizations
294   --enable-extra-warnings  enable more compiler warnings
295   --samples=PATH           location of test samples for FATE, if not set use
296                            \$LIBAV_SAMPLES at make invocation time.
297   --enable-neon-clobber-test check NEON registers for clobbering (should be
298                            used only for debugging purposes)
299   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
300                            should be used only for debugging purposes)
301   --enable-random          randomly enable/disable components
302   --disable-random
303   --enable-random=LIST     randomly enable/disable specific components or
304   --disable-random=LIST    component groups. LIST is a comma-separated list
305                            of NAME[:PROB] entries where NAME is a component
306                            (group) and PROB the probability associated with
307                            NAME (default 0.5).
308   --random-seed=VALUE      seed value for --enable/disable-random
309
310 NOTE: Object files are built at the place where configure is launched.
311 EOF
312   exit 0
313 }
314
315 quotes='""'
316
317 log(){
318     echo "$@" >> $logfile
319 }
320
321 log_file(){
322     log BEGIN $1
323     pr -n -t $1 >> $logfile
324     log END $1
325 }
326
327 echolog(){
328     log "$@"
329     echo "$@"
330 }
331
332 warn(){
333     log "WARNING: $*"
334     WARNINGS="${WARNINGS}WARNING: $*\n"
335 }
336
337 die(){
338     echolog "$@"
339     cat <<EOF
340
341 If you think configure made a mistake, make sure you are using the latest
342 version from Git.  If the latest version fails, report the problem to the
343 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
344 EOF
345     if disabled logging; then
346         cat <<EOF
347 Rerun configure with logging enabled (do not use --disable-logging), and
348 include the log this produces with your report.
349 EOF
350     else
351         cat <<EOF
352 Include the log file "$logfile" produced by configure as this will help
353 solving the problem.
354 EOF
355     fi
356     exit 1
357 }
358
359 # Avoid locale weirdness, besides we really just want to translate ASCII.
360 toupper(){
361     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
362 }
363
364 tolower(){
365     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
366 }
367
368 c_escape(){
369     echo "$*" | sed 's/["\\]/\\\0/g'
370 }
371
372 sh_quote(){
373     v=$(echo "$1" | sed "s/'/'\\\\''/g")
374     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
375     echo "$v"
376 }
377
378 cleanws(){
379     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
380 }
381
382 filter(){
383     pat=$1
384     shift
385     for v; do
386         eval "case $v in $pat) echo $v ;; esac"
387     done
388 }
389
390 filter_out(){
391     pat=$1
392     shift
393     for v; do
394         eval "case $v in $pat) ;; *) echo $v ;; esac"
395     done
396 }
397
398 map(){
399     m=$1
400     shift
401     for v; do eval $m; done
402 }
403
404 add_suffix(){
405     suffix=$1
406     shift
407     for v; do echo ${v}${suffix}; done
408 }
409
410 set_all(){
411     value=$1
412     shift
413     for var in $*; do
414         eval $var=$value
415     done
416 }
417
418 set_weak(){
419     value=$1
420     shift
421     for var; do
422         eval : \${$var:=$value}
423     done
424 }
425
426 sanitize_var_name(){
427     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
428 }
429
430 set_safe(){
431     var=$1
432     shift
433     eval $(sanitize_var_name "$var")='$*'
434 }
435
436 get_safe(){
437     eval echo \$$(sanitize_var_name "$1")
438 }
439
440 pushvar(){
441     for pvar in $*; do
442         eval level=\${${pvar}_level:=0}
443         eval ${pvar}_${level}="\$$pvar"
444         eval ${pvar}_level=$(($level+1))
445     done
446 }
447
448 popvar(){
449     for pvar in $*; do
450         eval level=\${${pvar}_level:-0}
451         test $level = 0 && continue
452         eval level=$(($level-1))
453         eval $pvar="\${${pvar}_${level}}"
454         eval ${pvar}_level=$level
455         eval unset ${pvar}_${level}
456     done
457 }
458
459 enable(){
460     set_all yes $*
461 }
462
463 disable(){
464     set_all no $*
465 }
466
467 enable_weak(){
468     set_weak yes $*
469 }
470
471 disable_weak(){
472     set_weak no $*
473 }
474
475 enable_safe(){
476     for var; do
477         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
478     done
479 }
480
481 disable_safe(){
482     for var; do
483         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
484     done
485 }
486
487 do_enable_deep(){
488     for var; do
489         enabled $var && continue
490         eval sel="\$${var}_select"
491         eval sgs="\$${var}_suggest"
492         pushvar var sgs
493         enable_deep $sel
494         popvar sgs
495         enable_deep_weak $sgs
496         popvar var
497     done
498 }
499
500 enable_deep(){
501     do_enable_deep $*
502     enable $*
503 }
504
505 enable_deep_weak(){
506     for var; do
507         disabled $var && continue
508         pushvar var
509         do_enable_deep $var
510         popvar var
511         enable_weak $var
512     done
513 }
514
515 enabled(){
516     test "${1#!}" = "$1" && op== || op=!=
517     eval test "x\$${1#!}" $op "xyes"
518 }
519
520 disabled(){
521     test "${1#!}" = "$1" && op== || op=!=
522     eval test "x\$${1#!}" $op "xno"
523 }
524
525 enabled_all(){
526     for opt; do
527         enabled $opt || return 1
528     done
529 }
530
531 disabled_all(){
532     for opt; do
533         disabled $opt || return 1
534     done
535 }
536
537 enabled_any(){
538     for opt; do
539         enabled $opt && return 0
540     done
541 }
542
543 disabled_any(){
544     for opt; do
545         disabled $opt && return 0
546     done
547     return 1
548 }
549
550 set_default(){
551     for opt; do
552         eval : \${$opt:=\$${opt}_default}
553     done
554 }
555
556 is_in(){
557     value=$1
558     shift
559     for var in $*; do
560         [ $var = $value ] && return 0
561     done
562     return 1
563 }
564
565 do_check_deps(){
566     for cfg; do
567         cfg="${cfg#!}"
568         enabled ${cfg}_checking && die "Circular dependency for $cfg."
569         disabled ${cfg}_checking && continue
570         enable ${cfg}_checking
571         append allopts $cfg
572
573         eval dep_all="\$${cfg}_deps"
574         eval dep_any="\$${cfg}_deps_any"
575         eval dep_sel="\$${cfg}_select"
576         eval dep_sgs="\$${cfg}_suggest"
577         eval dep_ifa="\$${cfg}_if"
578         eval dep_ifn="\$${cfg}_if_any"
579
580         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
581         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
582         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
583
584         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
585         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
586         enabled_all  $dep_all || disable $cfg
587         enabled_any  $dep_any || disable $cfg
588         disabled_any $dep_sel && disable $cfg
589
590         if enabled $cfg; then
591             enable_deep $dep_sel
592             enable_deep_weak $dep_sgs
593         fi
594
595         disable ${cfg}_checking
596     done
597 }
598
599 check_deps(){
600     unset allopts
601
602     do_check_deps "$@"
603
604     for cfg in $allopts; do
605         enabled $cfg || continue
606         eval dep_extralibs="\$${cfg}_extralibs"
607         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
608     done
609 }
610
611 print_config(){
612     pfx=$1
613     files=$2
614     shift 2
615     map 'eval echo "$v \${$v:-no}"' "$@" |
616     awk "BEGIN { split(\"$files\", files) }
617         {
618             c = \"$pfx\" toupper(\$1);
619             v = \$2;
620             sub(/yes/, 1, v);
621             sub(/no/,  0, v);
622             for (f in files) {
623                 file = files[f];
624                 if (file ~ /\\.h\$/) {
625                     printf(\"#define %s %d\\n\", c, v) >>file;
626                 } else if (file ~ /\\.asm\$/) {
627                     printf(\"%%define %s %d\\n\", c, v) >>file;
628                 } else if (file ~ /\\.mak\$/) {
629                     n = -v ? \"\" : \"!\";
630                     printf(\"%s%s=yes\\n\", n, c) >>file;
631                 }
632             }
633         }"
634 }
635
636 print_enabled(){
637     suf=$1
638     shift
639     for v; do
640         enabled $v && printf "%s\n" ${v%$suf};
641     done
642 }
643
644 append(){
645     var=$1
646     shift
647     eval "$var=\"\$$var $*\""
648 }
649
650 prepend(){
651     var=$1
652     shift
653     eval "$var=\"$* \$$var\""
654 }
655
656 add_cppflags(){
657     append CPPFLAGS "$@"
658 }
659
660 add_cflags(){
661     append CFLAGS $($cflags_filter "$@")
662 }
663
664 add_asflags(){
665     append ASFLAGS $($asflags_filter "$@")
666 }
667
668 add_ldflags(){
669     append LDFLAGS $($ldflags_filter "$@")
670 }
671
672 add_stripflags(){
673     append STRIPFLAGS "$@"
674 }
675
676 add_extralibs(){
677     prepend extralibs $($ldflags_filter "$@")
678 }
679
680 add_host_cppflags(){
681     append host_cppflags "$@"
682 }
683
684 add_host_cflags(){
685     append host_cflags $($host_cflags_filter "$@")
686 }
687
688 add_host_ldflags(){
689     append host_ldflags $($host_ldflags_filter "$@")
690 }
691
692 add_compat(){
693     append compat_objs $1
694     shift
695     map 'add_cppflags -D$v' "$@"
696 }
697
698 check_cmd(){
699     log "$@"
700     "$@" >> $logfile 2>&1
701 }
702
703 cc_o(){
704     eval printf '%s\\n' $CC_O
705 }
706
707 cc_e(){
708     eval printf '%s\\n' $CC_E
709 }
710
711 check_cc(){
712     log check_cc "$@"
713     cat > $TMPC
714     log_file $TMPC
715     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
716 }
717
718 check_cpp(){
719     log check_cpp "$@"
720     cat > $TMPC
721     log_file $TMPC
722     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
723 }
724
725 as_o(){
726     eval printf '%s\\n' $AS_O
727 }
728
729 check_as(){
730     log check_as "$@"
731     cat > $TMPS
732     log_file $TMPS
733     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
734 }
735
736 check_inline_asm(){
737     log check_inline_asm "$@"
738     name="$1"
739     code="$2"
740     shift 2
741     disable $name
742     check_cc "$@" <<EOF && enable $name
743 void foo(void){ __asm__ volatile($code); }
744 EOF
745 }
746
747 check_insn(){
748     log check_insn "$@"
749     check_inline_asm ${1}_inline "\"$2\""
750     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
751 }
752
753 check_yasm(){
754     log check_yasm "$@"
755     echo "$1" > $TMPS
756     log_file $TMPS
757     shift 1
758     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
759 }
760
761 ld_o(){
762     eval printf '%s\\n' $LD_O
763 }
764
765 check_ld(){
766     log check_ld "$@"
767     flags=$(filter_out '-l*' "$@")
768     libs=$(filter '-l*' "$@")
769     check_cc $($cflags_filter $flags) || return
770     flags=$($ldflags_filter $flags)
771     libs=$($ldflags_filter $libs)
772     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
773 }
774
775 print_include(){
776     hdr=$1
777     test "${hdr%.h}" = "${hdr}" &&
778         echo "#include $hdr"    ||
779         echo "#include <$hdr>"
780 }
781
782 check_code(){
783     log check_code "$@"
784     check=$1
785     headers=$2
786     code=$3
787     shift 3
788     {
789         for hdr in $headers; do
790             print_include $hdr
791         done
792         echo "int main(void) { $code; return 0; }"
793     } | check_$check "$@"
794 }
795
796 check_cppflags(){
797     log check_cppflags "$@"
798     check_cc "$@" <<EOF && append CPPFLAGS "$@"
799 int x;
800 EOF
801 }
802
803 test_cflags(){
804     log test_cflags "$@"
805     set -- $($cflags_filter "$@")
806     check_cc "$@" <<EOF
807 int x;
808 EOF
809 }
810
811 check_cflags(){
812     log check_cflags "$@"
813     test_cflags "$@" && add_cflags "$@"
814 }
815
816 test_ldflags(){
817     log test_ldflags "$@"
818     check_ld "$@" <<EOF
819 int main(void){ return 0; }
820 EOF
821 }
822
823 check_ldflags(){
824     log check_ldflags "$@"
825     test_ldflags "$@" && add_ldflags "$@"
826 }
827
828 test_stripflags(){
829     log test_stripflags "$@"
830     # call check_cc to get a fresh TMPO
831     check_cc <<EOF
832 int main(void) { return 0; }
833 EOF
834     check_cmd $strip $STRIPFLAGS "$@" $TMPO
835 }
836
837 check_stripflags(){
838     log check_stripflags "$@"
839     test_stripflags "$@" && add_stripflags "$@"
840 }
841
842 check_header(){
843     log check_header "$@"
844     header=$1
845     shift
846     disable_safe $header
847     check_cpp "$@" <<EOF && enable_safe $header
848 #include <$header>
849 int x;
850 EOF
851 }
852
853 check_func(){
854     log check_func "$@"
855     func=$1
856     shift
857     disable $func
858     check_ld "$@" <<EOF && enable $func
859 extern int $func();
860 int main(void){ $func(); }
861 EOF
862 }
863
864 check_mathfunc(){
865     log check_mathfunc "$@"
866     func=$1
867     narg=$2
868     shift 2
869     test $narg = 2 && args="f, g" || args="f"
870     disable $func
871     check_ld "$@" <<EOF && enable $func
872 #include <math.h>
873 float foo(float f, float g) { return $func($args); }
874 int main(void){ return 0; }
875 EOF
876 }
877
878 check_func_headers(){
879     log check_func_headers "$@"
880     headers=$1
881     funcs=$2
882     shift 2
883     {
884         for hdr in $headers; do
885             print_include $hdr
886         done
887         for func in $funcs; do
888             echo "long check_$func(void) { return (long) $func; }"
889         done
890         echo "int main(void) { return 0; }"
891     } | check_ld "$@" && enable $funcs && enable_safe $headers
892 }
893
894 check_cpp_condition(){
895     log check_cpp_condition "$@"
896     header=$1
897     condition=$2
898     shift 2
899     check_cpp "$@" <<EOF
900 #include <$header>
901 #if !($condition)
902 #error "unsatisfied condition: $condition"
903 #endif
904 EOF
905 }
906
907 check_lib(){
908     log check_lib "$@"
909     header="$1"
910     func="$2"
911     shift 2
912     check_header $header && check_func $func "$@" && add_extralibs "$@"
913 }
914
915 check_lib2(){
916     log check_lib2 "$@"
917     headers="$1"
918     funcs="$2"
919     shift 2
920     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
921 }
922
923 check_pkg_config(){
924     log check_pkg_config "$@"
925     pkg="$1"
926     headers="$2"
927     funcs="$3"
928     shift 3
929     check_cmd $pkg_config --exists --print-errors $pkg || return
930     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
931     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
932     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
933         set_safe ${pkg}_cflags $pkg_cflags   &&
934         set_safe ${pkg}_libs   $pkg_libs
935 }
936
937 check_exec(){
938     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
939 }
940
941 check_exec_crash(){
942     code=$(cat)
943
944     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
945     # are safe but may not be available everywhere.  Thus we use
946     # raise(SIGTERM) instead.  The check is run in a subshell so we
947     # can redirect the "Terminated" message from the shell.  SIGBUS
948     # is not defined by standard C so it is used conditionally.
949
950     (check_exec "$@") >> $logfile 2>&1 <<EOF
951 #include <signal.h>
952 static void sighandler(int sig){
953     raise(SIGTERM);
954 }
955 int foo(void){
956     $code
957 }
958 int (*func_ptr)(void) = foo;
959 int main(void){
960     signal(SIGILL, sighandler);
961     signal(SIGFPE, sighandler);
962     signal(SIGSEGV, sighandler);
963 #ifdef SIGBUS
964     signal(SIGBUS, sighandler);
965 #endif
966     return func_ptr();
967 }
968 EOF
969 }
970
971 check_type(){
972     log check_type "$@"
973     headers=$1
974     type=$2
975     shift 2
976     disable_safe "$type"
977     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
978 }
979
980 check_struct(){
981     log check_struct "$@"
982     headers=$1
983     struct=$2
984     member=$3
985     shift 3
986     disable_safe "${struct}_${member}"
987     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
988         enable_safe "${struct}_${member}"
989 }
990
991 check_builtin(){
992     log check_builtin "$@"
993     name=$1
994     headers=$2
995     builtin=$3
996     shift 3
997     disable "$name"
998     check_code ld "$headers" "$builtin" "$@" && enable "$name"
999 }
1000
1001 check_compile_assert(){
1002     log check_compile_assert "$@"
1003     name=$1
1004     headers=$2
1005     condition=$3
1006     shift 3
1007     disable "$name"
1008     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1009 }
1010
1011 require(){
1012     name="$1"
1013     header="$2"
1014     func="$3"
1015     shift 3
1016     check_lib $header $func "$@" || die "ERROR: $name not found"
1017 }
1018
1019 require2(){
1020     name="$1"
1021     headers="$2"
1022     func="$3"
1023     shift 3
1024     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1025 }
1026
1027 require_pkg_config(){
1028     pkg="$1"
1029     check_pkg_config "$@" || die "ERROR: $pkg not found"
1030     add_cflags    $(get_safe ${pkg}_cflags)
1031     add_extralibs $(get_safe ${pkg}_libs)
1032 }
1033
1034 hostcc_e(){
1035     eval printf '%s\\n' $HOSTCC_E
1036 }
1037
1038 hostcc_o(){
1039     eval printf '%s\\n' $HOSTCC_O
1040 }
1041
1042 check_host_cc(){
1043     log check_host_cc "$@"
1044     cat > $TMPC
1045     log_file $TMPC
1046     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1047 }
1048
1049 check_host_cpp(){
1050     log check_host_cpp "$@"
1051     cat > $TMPC
1052     log_file $TMPC
1053     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1054 }
1055
1056 check_host_cppflags(){
1057     log check_host_cppflags "$@"
1058     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1059 int x;
1060 EOF
1061 }
1062
1063 check_host_cflags(){
1064     log check_host_cflags "$@"
1065     set -- $($host_cflags_filter "$@")
1066     check_host_cc "$@" <<EOF && append host_cflags "$@"
1067 int x;
1068 EOF
1069 }
1070
1071 check_host_cpp_condition(){
1072     log check_host_cpp_condition "$@"
1073     header=$1
1074     condition=$2
1075     shift 2
1076     check_host_cpp "$@" <<EOF
1077 #include <$header>
1078 #if !($condition)
1079 #error "unsatisfied condition: $condition"
1080 #endif
1081 EOF
1082 }
1083
1084 apply(){
1085     file=$1
1086     shift
1087     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1088 }
1089
1090 cp_if_changed(){
1091     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1092     mkdir -p "$(dirname $2)"
1093     $cp_f "$1" "$2"
1094 }
1095
1096 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1097 # system-dependent things.
1098
1099 COMPONENT_LIST="
1100     bsfs
1101     decoders
1102     demuxers
1103     encoders
1104     filters
1105     hwaccels
1106     indevs
1107     muxers
1108     outdevs
1109     parsers
1110     protocols
1111 "
1112
1113 EXAMPLE_LIST="
1114     avcodec_example
1115     filter_audio_example
1116     metadata_example
1117     output_example
1118     transcode_aac_example
1119 "
1120
1121 EXTERNAL_LIBRARY_LIST="
1122     avisynth
1123     bzlib
1124     frei0r
1125     gnutls
1126     libcdio
1127     libdc1394
1128     libfaac
1129     libfdk_aac
1130     libfreetype
1131     libgsm
1132     libilbc
1133     libmp3lame
1134     libopencore_amrnb
1135     libopencore_amrwb
1136     libopencv
1137     libopenjpeg
1138     libopus
1139     libpulse
1140     librtmp
1141     libschroedinger
1142     libspeex
1143     libtheora
1144     libvo_aacenc
1145     libvo_amrwbenc
1146     libvorbis
1147     libvpx
1148     libwavpack
1149     libwebp
1150     libx264
1151     libx265
1152     libxavs
1153     libxvid
1154     openssl
1155     x11grab
1156     zlib
1157 "
1158
1159 FEATURE_LIST="
1160     gray
1161     hardcoded_tables
1162     runtime_cpudetect
1163     safe_bitstream_reader
1164     shared
1165     small
1166     sram
1167     static
1168     swscale_alpha
1169 "
1170
1171 HWACCEL_LIST="
1172     dxva2
1173     vaapi
1174     vda
1175     vdpau
1176 "
1177
1178 LIBRARY_LIST="
1179     avcodec
1180     avdevice
1181     avfilter
1182     avformat
1183     avresample
1184     avutil
1185     swscale
1186 "
1187
1188 LICENSE_LIST="
1189     gpl
1190     nonfree
1191     version3
1192 "
1193
1194 PROGRAM_LIST="
1195     avconv
1196     avplay
1197     avprobe
1198     avserver
1199 "
1200
1201 SUBSYSTEM_LIST="
1202     dct
1203     doc
1204     error_resilience
1205     fft
1206     lsp
1207     lzo
1208     mdct
1209     network
1210     rdft
1211 "
1212
1213 CONFIG_LIST="
1214     $COMPONENT_LIST
1215     $EXAMPLE_LIST
1216     $EXTERNAL_LIBRARY_LIST
1217     $FEATURE_LIST
1218     $HWACCEL_LIST
1219     $LICENSE_LIST
1220     $LIBRARY_LIST
1221     $PROGRAM_LIST
1222     $SUBSYSTEM_LIST
1223     memalign_hack
1224     neon_clobber_test
1225     pic
1226     pod2man
1227     texi2html
1228     thumb
1229     xmm_clobber_test
1230 "
1231
1232 THREADS_LIST="
1233     pthreads
1234     w32threads
1235 "
1236
1237 ATOMICS_LIST="
1238     atomics_gcc
1239     atomics_suncc
1240     atomics_win32
1241 "
1242
1243 ARCH_LIST="
1244     aarch64
1245     alpha
1246     arm
1247     avr32
1248     avr32_ap
1249     avr32_uc
1250     bfin
1251     ia64
1252     m68k
1253     mips
1254     mips64
1255     parisc
1256     ppc
1257     ppc64
1258     s390
1259     sh4
1260     sparc
1261     sparc64
1262     tilegx
1263     tilepro
1264     tomi
1265     x86
1266     x86_32
1267     x86_64
1268 "
1269
1270 ARCH_EXT_LIST_ARM="
1271     armv5te
1272     armv6
1273     armv6t2
1274     armv8
1275     neon
1276     vfp
1277     vfpv3
1278 "
1279
1280 ARCH_EXT_LIST_X86_SIMD="
1281     amd3dnow
1282     amd3dnowext
1283     avx
1284     avx2
1285     fma3
1286     fma4
1287     mmx
1288     mmxext
1289     sse
1290     sse2
1291     sse3
1292     sse4
1293     sse42
1294     ssse3
1295     xop
1296 "
1297
1298 ARCH_EXT_LIST_PPC="
1299     altivec
1300     dcbzl
1301     ldbrx
1302     ppc4xx
1303 "
1304
1305 ARCH_EXT_LIST_X86="
1306     $ARCH_EXT_LIST_X86_SIMD
1307     cpunop
1308     i686
1309 "
1310
1311 ARCH_EXT_LIST="
1312     $ARCH_EXT_LIST_ARM
1313     $ARCH_EXT_LIST_PPC
1314     $ARCH_EXT_LIST_X86
1315     loongson
1316     vis
1317 "
1318
1319 ARCH_FEATURES="
1320     aligned_stack
1321     fast_64bit
1322     fast_clz
1323     fast_cmov
1324     local_aligned_8
1325     local_aligned_16
1326 "
1327
1328 BUILTIN_LIST="
1329     atomic_cas_ptr
1330     machine_rw_barrier
1331     MemoryBarrier
1332     mm_empty
1333     rdtsc
1334     sync_val_compare_and_swap
1335 "
1336 HAVE_LIST_CMDLINE="
1337     inline_asm
1338     symver
1339     yasm
1340 "
1341
1342 HAVE_LIST_PUB="
1343     bigendian
1344     fast_unaligned
1345 "
1346
1347 HEADERS_LIST="
1348     alsa_asoundlib_h
1349     altivec_h
1350     arpa_inet_h
1351     cdio_paranoia_h
1352     cdio_paranoia_paranoia_h
1353     dev_bktr_ioctl_bt848_h
1354     dev_bktr_ioctl_meteor_h
1355     dev_ic_bt8xx_h
1356     dev_video_bktr_ioctl_bt848_h
1357     dev_video_meteor_ioctl_meteor_h
1358     direct_h
1359     dlfcn_h
1360     dxva_h
1361     gsm_h
1362     io_h
1363     mach_mach_time_h
1364     machine_ioctl_bt848_h
1365     machine_ioctl_meteor_h
1366     malloc_h
1367     poll_h
1368     sndio_h
1369     soundcard_h
1370     sys_mman_h
1371     sys_param_h
1372     sys_resource_h
1373     sys_select_h
1374     sys_soundcard_h
1375     sys_time_h
1376     sys_un_h
1377     sys_videoio_h
1378     unistd_h
1379     windows_h
1380     winsock2_h
1381 "
1382
1383 MATH_FUNCS="
1384     atanf
1385     atan2f
1386     cbrtf
1387     cosf
1388     exp2
1389     exp2f
1390     expf
1391     isinf
1392     isnan
1393     ldexpf
1394     llrint
1395     llrintf
1396     log2
1397     log2f
1398     log10f
1399     lrint
1400     lrintf
1401     powf
1402     rint
1403     round
1404     roundf
1405     sinf
1406     trunc
1407     truncf
1408 "
1409
1410 SYSTEM_FUNCS="
1411     aligned_malloc
1412     closesocket
1413     CommandLineToArgvW
1414     CryptGenRandom
1415     dlopen
1416     fcntl
1417     flt_lim
1418     fork
1419     getaddrinfo
1420     gethrtime
1421     getopt
1422     GetProcessAffinityMask
1423     GetProcessMemoryInfo
1424     GetProcessTimes
1425     getrusage
1426     getservbyport
1427     GetSystemTimeAsFileTime
1428     gettimeofday
1429     inet_aton
1430     isatty
1431     jack_port_get_latency_range
1432     localtime_r
1433     mach_absolute_time
1434     MapViewOfFile
1435     memalign
1436     mkstemp
1437     mmap
1438     mprotect
1439     nanosleep
1440     posix_memalign
1441     sched_getaffinity
1442     SetConsoleTextAttribute
1443     setmode
1444     setrlimit
1445     Sleep
1446     strerror_r
1447     strptime
1448     sysconf
1449     sysctl
1450     usleep
1451     VirtualAlloc
1452 "
1453
1454 TOOLCHAIN_FEATURES="
1455     asm_mod_q
1456     attribute_may_alias
1457     attribute_packed
1458     ebp_available
1459     ebx_available
1460     gnu_as
1461     ibm_asm
1462     inline_asm_labels
1463     pragma_deprecated
1464     symver_asm_label
1465     symver_gnu_asm
1466     vfp_args
1467     xform_asm
1468     xmm_clobbers
1469 "
1470
1471 TYPES_LIST="
1472     socklen_t
1473     struct_addrinfo
1474     struct_group_source_req
1475     struct_ip_mreq_source
1476     struct_ipv6_mreq
1477     struct_pollfd
1478     struct_rusage_ru_maxrss
1479     struct_sockaddr_in6
1480     struct_sockaddr_sa_len
1481     struct_sockaddr_storage
1482     struct_v4l2_frmivalenum_discrete
1483 "
1484
1485 HAVE_LIST="
1486     $ARCH_EXT_LIST
1487     $(add_suffix _external $ARCH_EXT_LIST)
1488     $(add_suffix _inline   $ARCH_EXT_LIST)
1489     $ARCH_FEATURES
1490     $ATOMICS_LIST
1491     $BUILTIN_LIST
1492     $HAVE_LIST_CMDLINE
1493     $HAVE_LIST_PUB
1494     $HEADERS_LIST
1495     $MATH_FUNCS
1496     $SYSTEM_FUNCS
1497     $THREADS_LIST
1498     $TOOLCHAIN_FEATURES
1499     $TYPES_LIST
1500     atomics_native
1501     dos_paths
1502     libc_msvcrt
1503     libdc1394_1
1504     libdc1394_2
1505     sdl
1506     threads
1507     vdpau_x11
1508     xlib
1509 "
1510
1511 # options emitted with CONFIG_ prefix but not available on the command line
1512 CONFIG_EXTRA="
1513     aandcttables
1514     ac3dsp
1515     audio_frame_queue
1516     cabac
1517     dsputil
1518     gcrypt
1519     golomb
1520     gplv3
1521     h263dsp
1522     h264chroma
1523     h264dsp
1524     h264pred
1525     h264qpel
1526     hpeldsp
1527     huffman
1528     intrax8
1529     lgplv3
1530     lpc
1531     mpegaudio
1532     mpegaudiodsp
1533     mpegvideo
1534     mpegvideoenc
1535     nettle
1536     rangecoder
1537     riffdec
1538     riffenc
1539     rtpdec
1540     rtpenc_chain
1541     sinewin
1542     tpeldsp
1543     videodsp
1544     vp3dsp
1545 "
1546
1547 CMDLINE_SELECT="
1548     $ARCH_EXT_LIST
1549     $CONFIG_LIST
1550     $HAVE_LIST_CMDLINE
1551     $THREADS_LIST
1552     asm
1553     cross_compile
1554     debug
1555     extra_warnings
1556     logging
1557     lto
1558     optimizations
1559 "
1560
1561 PATHS_LIST="
1562     bindir
1563     datadir
1564     docdir
1565     incdir
1566     libdir
1567     mandir
1568     prefix
1569     shlibdir
1570 "
1571
1572 CMDLINE_SET="
1573     $PATHS_LIST
1574     ar
1575     arch
1576     as
1577     build_suffix
1578     cc
1579     cpu
1580     cross_prefix
1581     dep_cc
1582     extra_version
1583     host_cc
1584     host_cflags
1585     host_ld
1586     host_ldflags
1587     host_libs
1588     host_os
1589     ld
1590     logfile
1591     malloc_prefix
1592     nm
1593     optflags
1594     pkg_config
1595     pkg_config_flags
1596     random_seed
1597     samples
1598     sysinclude
1599     sysroot
1600     target_exec
1601     target_os
1602     target_path
1603     target_samples
1604     toolchain
1605 "
1606
1607 CMDLINE_APPEND="
1608     extra_cflags
1609     host_cppflags
1610 "
1611
1612 # code dependency declarations
1613
1614 # architecture extensions
1615
1616 armv5te_deps="arm"
1617 armv6_deps="arm"
1618 armv6t2_deps="arm"
1619 armv8_deps="aarch64"
1620 neon_deps_any="aarch64 arm"
1621 vfp_deps_any="aarch64 arm"
1622 vfpv3_deps="vfp"
1623
1624 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1625
1626 altivec_deps="ppc"
1627 ppc4xx_deps="ppc"
1628
1629 cpunop_deps="i686"
1630 x86_64_select="i686"
1631 x86_64_suggest="fast_cmov"
1632
1633 amd3dnow_deps="mmx"
1634 amd3dnowext_deps="amd3dnow"
1635 i686_deps="x86"
1636 mmx_deps="x86"
1637 mmxext_deps="mmx"
1638 sse_deps="mmxext"
1639 sse2_deps="sse"
1640 sse3_deps="sse2"
1641 ssse3_deps="sse3"
1642 sse4_deps="ssse3"
1643 sse42_deps="sse4"
1644 avx_deps="sse42"
1645 xop_deps="avx"
1646 fma3_deps="avx"
1647 fma4_deps="avx"
1648 avx2_deps="avx"
1649
1650 mmx_external_deps="yasm"
1651 mmx_inline_deps="inline_asm"
1652 mmx_suggest="mmx_external mmx_inline"
1653
1654 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1655     eval dep=\$${ext}_deps
1656     eval ${ext}_external_deps='"${dep}_external"'
1657     eval ${ext}_inline_deps='"${dep}_inline"'
1658     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1659 done
1660
1661 aligned_stack_if_any="aarch64 ppc x86"
1662 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1663 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1664 fast_unaligned_if_any="aarch64 ppc x86"
1665
1666 need_memalign="altivec neon sse"
1667
1668 # system capabilities
1669 log2_deps="!libc_msvcrt"
1670
1671 symver_if_any="symver_asm_label symver_gnu_asm"
1672
1673 # threading support
1674 atomics_gcc_if="sync_val_compare_and_swap"
1675 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1676 atomics_win32_if="MemoryBarrier"
1677 atomics_native_if_any="$ATOMICS_LIST"
1678 w32threads_deps="atomics_native"
1679 threads_if_any="$THREADS_LIST"
1680
1681 # subsystems
1682 dct_select="rdft"
1683 error_resilience_select="dsputil"
1684 mdct_select="fft"
1685 rdft_select="fft"
1686 mpegaudio_select="mpegaudiodsp"
1687 mpegaudiodsp_select="dct"
1688 mpegvideo_select="dsputil hpeldsp videodsp"
1689 mpegvideoenc_select="dsputil mpegvideo"
1690
1691 # decoders / encoders
1692 aac_decoder_select="mdct sinewin"
1693 aac_encoder_select="audio_frame_queue mdct sinewin"
1694 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1695 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1696 ac3_encoder_select="mdct ac3dsp dsputil"
1697 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1698 aic_decoder_select="dsputil golomb"
1699 alac_encoder_select="lpc"
1700 als_decoder_select="dsputil"
1701 amrnb_decoder_select="lsp"
1702 amrwb_decoder_select="lsp"
1703 amv_decoder_select="sp5x_decoder"
1704 ape_decoder_select="dsputil"
1705 asv1_decoder_select="dsputil"
1706 asv1_encoder_select="dsputil"
1707 asv2_decoder_select="dsputil"
1708 asv2_encoder_select="dsputil"
1709 atrac1_decoder_select="mdct sinewin"
1710 atrac3_decoder_select="mdct"
1711 atrac3p_decoder_select="mdct sinewin"
1712 bink_decoder_select="dsputil hpeldsp"
1713 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1714 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1715 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1716 cllc_decoder_select="dsputil"
1717 comfortnoise_encoder_select="lpc"
1718 cook_decoder_select="dsputil mdct sinewin"
1719 cscd_decoder_select="lzo"
1720 cscd_decoder_suggest="zlib"
1721 dca_decoder_select="mdct"
1722 dnxhd_decoder_select="dsputil"
1723 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1724 dvvideo_decoder_select="dsputil"
1725 dvvideo_encoder_select="dsputil"
1726 dxa_decoder_deps="zlib"
1727 eac3_decoder_select="ac3_decoder"
1728 eac3_encoder_select="ac3_encoder"
1729 eamad_decoder_select="aandcttables dsputil mpegvideo"
1730 eatgq_decoder_select="aandcttables dsputil"
1731 eatqi_decoder_select="aandcttables dsputil error_resilience mpegvideo"
1732 exr_decoder_deps="zlib"
1733 ffv1_decoder_select="golomb rangecoder"
1734 ffv1_encoder_select="rangecoder"
1735 ffvhuff_decoder_select="huffyuv_decoder"
1736 ffvhuff_encoder_select="huffyuv_encoder"
1737 fic_decoder_select="dsputil golomb"
1738 flac_decoder_select="golomb"
1739 flac_encoder_select="dsputil golomb lpc"
1740 flashsv_decoder_deps="zlib"
1741 flashsv_encoder_deps="zlib"
1742 flashsv2_decoder_deps="zlib"
1743 flv_decoder_select="h263_decoder"
1744 flv_encoder_select="h263_encoder"
1745 fourxm_decoder_select="dsputil"
1746 fraps_decoder_select="dsputil huffman"
1747 g2m_decoder_deps="zlib"
1748 g2m_decoder_select="dsputil"
1749 h261_decoder_select="error_resilience mpegvideo"
1750 h261_encoder_select="aandcttables mpegvideoenc"
1751 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
1752 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1753 h263i_decoder_select="h263_decoder"
1754 h263p_encoder_select="h263_encoder"
1755 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
1756 h264_decoder_suggest="error_resilience"
1757 hevc_decoder_select="cabac dsputil golomb videodsp"
1758 huffyuv_decoder_select="dsputil"
1759 huffyuv_encoder_select="dsputil huffman"
1760 iac_decoder_select="imc_decoder"
1761 imc_decoder_select="dsputil fft mdct sinewin"
1762 indeo3_decoder_select="hpeldsp"
1763 interplay_video_decoder_select="hpeldsp"
1764 jpegls_decoder_select="golomb mjpeg_decoder"
1765 jpegls_encoder_select="golomb"
1766 jv_decoder_select="dsputil"
1767 lagarith_decoder_select="dsputil"
1768 ljpeg_encoder_select="aandcttables mpegvideoenc"
1769 loco_decoder_select="golomb"
1770 mdec_decoder_select="dsputil error_resilience mpegvideo"
1771 metasound_decoder_select="lsp mdct sinewin"
1772 mimic_decoder_select="dsputil hpeldsp"
1773 mjpeg_decoder_select="dsputil hpeldsp"
1774 mjpeg_encoder_select="aandcttables mpegvideoenc"
1775 mjpegb_decoder_select="mjpeg_decoder"
1776 mlp_decoder_select="mlp_parser"
1777 motionpixels_decoder_select="dsputil"
1778 mp1_decoder_select="mpegaudio"
1779 mp1float_decoder_select="mpegaudio"
1780 mp2_decoder_select="mpegaudio"
1781 mp2float_decoder_select="mpegaudio"
1782 mp3_decoder_select="mpegaudio"
1783 mp3adu_decoder_select="mpegaudio"
1784 mp3adufloat_decoder_select="mpegaudio"
1785 mp3float_decoder_select="mpegaudio"
1786 mp3on4_decoder_select="mpegaudio"
1787 mp3on4float_decoder_select="mpegaudio"
1788 mpc7_decoder_select="dsputil mpegaudiodsp"
1789 mpc8_decoder_select="mpegaudiodsp"
1790 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1791 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1792 mpeg1video_decoder_select="error_resilience mpegvideo"
1793 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1794 mpeg2video_decoder_select="error_resilience mpegvideo"
1795 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1796 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1797 mpeg4_encoder_select="h263_encoder"
1798 msmpeg4v1_decoder_select="h263_decoder"
1799 msmpeg4v2_decoder_select="h263_decoder"
1800 msmpeg4v2_encoder_select="h263_encoder"
1801 msmpeg4v3_decoder_select="h263_decoder"
1802 msmpeg4v3_encoder_select="h263_encoder"
1803 mss2_decoder_select="error_resilience vc1_decoder"
1804 mxpeg_decoder_select="mjpeg_decoder"
1805 nellymoser_decoder_select="mdct sinewin"
1806 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1807 nuv_decoder_select="dsputil lzo"
1808 png_decoder_deps="zlib"
1809 png_encoder_deps="zlib"
1810 png_encoder_select="dsputil"
1811 prores_decoder_select="dsputil"
1812 prores_encoder_select="dsputil"
1813 qcelp_decoder_select="lsp"
1814 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1815 ra_144_encoder_select="audio_frame_queue lpc"
1816 ralf_decoder_select="golomb"
1817 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1818 rv10_encoder_select="h263_encoder"
1819 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1820 rv20_encoder_select="h263_encoder"
1821 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1822 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1823 shorten_decoder_select="golomb"
1824 sipr_decoder_select="lsp"
1825 sp5x_decoder_select="mjpeg_decoder"
1826 svq1_decoder_select="hpeldsp"
1827 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1828 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1829 svq3_decoder_suggest="zlib"
1830 tak_decoder_select="dsputil"
1831 theora_decoder_select="vp3_decoder"
1832 thp_decoder_select="mjpeg_decoder"
1833 tiff_decoder_suggest="zlib"
1834 tiff_encoder_suggest="zlib"
1835 truehd_decoder_select="mlp_decoder"
1836 truemotion2_decoder_select="dsputil"
1837 truespeech_decoder_select="dsputil"
1838 tscc_decoder_deps="zlib"
1839 twinvq_decoder_select="mdct lsp sinewin"
1840 utvideo_decoder_select="dsputil"
1841 utvideo_encoder_select="dsputil huffman"
1842 vble_decoder_select="dsputil"
1843 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
1844 vc1image_decoder_select="vc1_decoder"
1845 vorbis_decoder_select="mdct"
1846 vorbis_encoder_select="mdct"
1847 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1848 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1849 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1850 vp6a_decoder_select="vp6_decoder"
1851 vp6f_decoder_select="vp6_decoder"
1852 vp7_decoder_select="h264pred videodsp"
1853 vp8_decoder_select="h264pred videodsp"
1854 vp9_decoder_select="videodsp"
1855 webp_decoder_select="vp8_decoder"
1856 wmapro_decoder_select="mdct sinewin"
1857 wmav1_decoder_select="mdct sinewin"
1858 wmav1_encoder_select="mdct sinewin"
1859 wmav2_decoder_select="mdct sinewin"
1860 wmav2_encoder_select="mdct sinewin"
1861 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1862 wmv1_decoder_select="h263_decoder"
1863 wmv1_encoder_select="h263_encoder"
1864 wmv2_decoder_select="h263_decoder intrax8 videodsp"
1865 wmv2_encoder_select="h263_encoder"
1866 wmv3_decoder_select="vc1_decoder"
1867 wmv3image_decoder_select="wmv3_decoder"
1868 zerocodec_decoder_deps="zlib"
1869 zlib_decoder_deps="zlib"
1870 zlib_encoder_deps="zlib"
1871 zmbv_decoder_deps="zlib"
1872 zmbv_encoder_deps="zlib"
1873
1874 # hardware accelerators
1875 dxva2_deps="dxva2api_h"
1876 vaapi_deps="va_va_h"
1877 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1878 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1879 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1880
1881 h263_vaapi_hwaccel_deps="vaapi"
1882 h263_vaapi_hwaccel_select="h263_decoder"
1883 h263_vdpau_hwaccel_deps="vdpau"
1884 h263_vdpau_hwaccel_select="h263_decoder"
1885 h264_dxva2_hwaccel_deps="dxva2"
1886 h264_dxva2_hwaccel_select="h264_decoder"
1887 h264_vaapi_hwaccel_deps="vaapi"
1888 h264_vaapi_hwaccel_select="h264_decoder"
1889 h264_vda_hwaccel_deps="vda"
1890 h264_vda_hwaccel_select="h264_decoder"
1891 h264_vdpau_hwaccel_deps="vdpau"
1892 h264_vdpau_hwaccel_select="h264_decoder"
1893 mpeg1_vdpau_hwaccel_deps="vdpau"
1894 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1895 mpeg2_dxva2_hwaccel_deps="dxva2"
1896 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1897 mpeg2_vaapi_hwaccel_deps="vaapi"
1898 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1899 mpeg2_vdpau_hwaccel_deps="vdpau"
1900 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1901 mpeg4_vaapi_hwaccel_deps="vaapi"
1902 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1903 mpeg4_vdpau_hwaccel_deps="vdpau"
1904 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1905 vc1_dxva2_hwaccel_deps="dxva2"
1906 vc1_dxva2_hwaccel_select="vc1_decoder"
1907 vc1_vaapi_hwaccel_deps="vaapi"
1908 vc1_vaapi_hwaccel_select="vc1_decoder"
1909 vc1_vdpau_hwaccel_deps="vdpau"
1910 vc1_vdpau_hwaccel_select="vc1_decoder"
1911 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1912 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1913 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1914
1915 # parsers
1916 h264_parser_select="h264_decoder"
1917 mpeg4video_parser_select="error_resilience h263dsp mpegvideo"
1918 mpegvideo_parser_select="error_resilience mpegvideo"
1919 vc1_parser_select="mpegvideo"
1920
1921 # external libraries
1922 libfaac_encoder_deps="libfaac"
1923 libfaac_encoder_select="audio_frame_queue"
1924 libfdk_aac_decoder_deps="libfdk_aac"
1925 libfdk_aac_encoder_deps="libfdk_aac"
1926 libfdk_aac_encoder_select="audio_frame_queue"
1927 libgsm_decoder_deps="libgsm"
1928 libgsm_encoder_deps="libgsm"
1929 libgsm_ms_decoder_deps="libgsm"
1930 libgsm_ms_encoder_deps="libgsm"
1931 libilbc_decoder_deps="libilbc"
1932 libilbc_encoder_deps="libilbc"
1933 libmp3lame_encoder_deps="libmp3lame"
1934 libmp3lame_encoder_select="audio_frame_queue"
1935 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1936 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1937 libopencore_amrnb_encoder_select="audio_frame_queue"
1938 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1939 libopenjpeg_decoder_deps="libopenjpeg"
1940 libopenjpeg_encoder_deps="libopenjpeg"
1941 libopus_decoder_deps="libopus"
1942 libopus_encoder_deps="libopus"
1943 libopus_encoder_select="audio_frame_queue"
1944 libschroedinger_decoder_deps="libschroedinger"
1945 libschroedinger_encoder_deps="libschroedinger"
1946 libspeex_decoder_deps="libspeex"
1947 libspeex_encoder_deps="libspeex"
1948 libspeex_encoder_select="audio_frame_queue"
1949 libtheora_encoder_deps="libtheora"
1950 libvo_aacenc_encoder_deps="libvo_aacenc"
1951 libvo_aacenc_encoder_select="audio_frame_queue"
1952 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1953 libvorbis_encoder_deps="libvorbis"
1954 libvorbis_encoder_select="audio_frame_queue"
1955 libvpx_vp8_decoder_deps="libvpx"
1956 libvpx_vp8_encoder_deps="libvpx"
1957 libvpx_vp9_decoder_deps="libvpx"
1958 libvpx_vp9_encoder_deps="libvpx"
1959 libwavpack_encoder_deps="libwavpack"
1960 libwebp_encoder_deps="libwebp"
1961 libx264_encoder_deps="libx264"
1962 libx265_encoder_deps="libx265"
1963 libxavs_encoder_deps="libxavs"
1964 libxvid_encoder_deps="libxvid"
1965
1966 # demuxers / muxers
1967 ac3_demuxer_select="ac3_parser"
1968 asf_demuxer_select="riffdec"
1969 asf_muxer_select="riffenc"
1970 asf_stream_muxer_select="asf_muxer"
1971 avi_demuxer_select="riffdec"
1972 avi_muxer_select="riffenc"
1973 avisynth_demuxer_deps="avisynth"
1974 avisynth_demuxer_select="riffdec"
1975 caf_demuxer_select="riffdec"
1976 dirac_demuxer_select="dirac_parser"
1977 dxa_demuxer_select="riffdec"
1978 eac3_demuxer_select="ac3_parser"
1979 f4v_muxer_select="mov_muxer"
1980 flac_demuxer_select="flac_parser"
1981 hds_muxer_select="flv_muxer"
1982 hls_muxer_select="mpegts_muxer"
1983 ipod_muxer_select="mov_muxer"
1984 ismv_muxer_select="mov_muxer"
1985 matroska_audio_muxer_select="matroska_muxer"
1986 matroska_demuxer_select="riffdec"
1987 matroska_demuxer_suggest="bzlib lzo zlib"
1988 matroska_muxer_select="riffenc"
1989 mmf_muxer_select="riffenc"
1990 mov_demuxer_select="riffdec"
1991 mov_demuxer_suggest="zlib"
1992 mov_muxer_select="riffenc rtpenc_chain"
1993 mp3_demuxer_select="mpegaudio_parser"
1994 mp4_muxer_select="mov_muxer"
1995 mpegts_muxer_select="adts_muxer latm_muxer"
1996 mpegtsraw_demuxer_select="mpegts_demuxer"
1997 mxf_d10_muxer_select="mxf_muxer"
1998 nut_muxer_select="riffenc"
1999 nuv_demuxer_select="riffdec"
2000 ogg_demuxer_select="golomb"
2001 psp_muxer_select="mov_muxer"
2002 rtp_demuxer_select="sdp_demuxer"
2003 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2004 rtsp_demuxer_select="http_protocol rtpdec"
2005 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2006 sap_demuxer_select="sdp_demuxer"
2007 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2008 sdp_demuxer_select="rtpdec"
2009 smoothstreaming_muxer_select="ismv_muxer"
2010 spdif_muxer_select="aac_parser"
2011 tak_demuxer_select="tak_parser"
2012 tg2_muxer_select="mov_muxer"
2013 tgp_muxer_select="mov_muxer"
2014 w64_demuxer_select="wav_demuxer"
2015 wav_demuxer_select="riffdec"
2016 wav_muxer_select="riffenc"
2017 webm_muxer_select="riffenc"
2018 wtv_demuxer_select="riffdec"
2019 xmv_demuxer_select="riffdec"
2020 xwma_demuxer_select="riffdec"
2021
2022 # indevs / outdevs
2023 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2024 alsa_outdev_deps="alsa_asoundlib_h"
2025 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2026 dv1394_indev_deps="dv1394"
2027 dv1394_indev_select="dv_demuxer"
2028 fbdev_indev_deps="linux_fb_h"
2029 jack_indev_deps="jack_jack_h pthreads"
2030 libcdio_indev_deps="libcdio"
2031 libdc1394_indev_deps="libdc1394"
2032 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2033 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2034 pulse_indev_deps="libpulse"
2035 sndio_indev_deps="sndio_h"
2036 sndio_outdev_deps="sndio_h"
2037 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2038 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2039 vfwcap_indev_extralibs="-lavicap32"
2040 x11grab_indev_deps="x11grab XShmCreateImage"
2041
2042 # protocols
2043 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2044 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2045 ffrtmpcrypt_protocol_select="tcp_protocol"
2046 ffrtmphttp_protocol_deps="!librtmp_protocol"
2047 ffrtmphttp_protocol_select="http_protocol"
2048 gopher_protocol_select="network"
2049 http_protocol_select="tcp_protocol"
2050 httpproxy_protocol_select="tcp_protocol"
2051 https_protocol_select="tls_protocol"
2052 librtmp_protocol_deps="librtmp"
2053 librtmpe_protocol_deps="librtmp"
2054 librtmps_protocol_deps="librtmp"
2055 librtmpt_protocol_deps="librtmp"
2056 librtmpte_protocol_deps="librtmp"
2057 mmsh_protocol_select="http_protocol"
2058 mmst_protocol_select="network"
2059 rtmp_protocol_deps="!librtmp_protocol"
2060 rtmp_protocol_select="tcp_protocol"
2061 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2062 rtmps_protocol_deps="!librtmp_protocol"
2063 rtmps_protocol_select="tls_protocol"
2064 rtmpt_protocol_select="ffrtmphttp_protocol"
2065 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2066 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2067 rtp_protocol_select="udp_protocol"
2068 sctp_protocol_deps="struct_sctp_event_subscribe"
2069 sctp_protocol_select="network"
2070 srtp_protocol_select="rtp_protocol"
2071 tcp_protocol_select="network"
2072 tls_protocol_deps_any="openssl gnutls"
2073 tls_protocol_select="tcp_protocol"
2074 udp_protocol_select="network"
2075 unix_protocol_deps="sys_un_h"
2076 unix_protocol_select="network"
2077
2078 # filters
2079 blackframe_filter_deps="gpl"
2080 boxblur_filter_deps="gpl"
2081 cropdetect_filter_deps="gpl"
2082 delogo_filter_deps="gpl"
2083 drawtext_filter_deps="libfreetype"
2084 frei0r_filter_deps="frei0r dlopen"
2085 frei0r_filter_extralibs='$ldl'
2086 frei0r_src_filter_deps="frei0r dlopen"
2087 frei0r_src_filter_extralibs='$ldl'
2088 hqdn3d_filter_deps="gpl"
2089 interlace_filter_deps="gpl"
2090 ocv_filter_deps="libopencv"
2091 resample_filter_deps="avresample"
2092 scale_filter_deps="swscale"
2093
2094 # examples
2095 avcodec_example_deps="avcodec avutil"
2096 filter_audio_example_deps="avfilter avutil"
2097 metadata_example_deps="avformat avutil"
2098 output_example_deps="avcodec avformat avutil swscale"
2099 transcode_aac_example_deps="avcodec avformat avresample"
2100
2101 # libraries
2102 avcodec_deps="avutil"
2103 avdevice_deps="avutil avcodec avformat"
2104 avfilter_deps="avutil"
2105 avformat_deps="avutil avcodec"
2106 avresample_deps="avutil"
2107 swscale_deps="avutil"
2108
2109 # programs
2110 avconv_deps="avcodec avfilter avformat avresample swscale"
2111 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2112                fps_filter null_filter resample_filter scale_filter
2113                setpts_filter trim_filter"
2114 avplay_deps="avcodec avformat avresample swscale sdl"
2115 avplay_libs='$sdl_libs'
2116 avplay_select="rdft"
2117 avprobe_deps="avcodec avformat"
2118 avserver_deps="avformat fork !shared"
2119 avserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2120
2121 # documentation
2122 pod2man_deps="doc"
2123 texi2html_deps="doc"
2124
2125 # default parameters
2126
2127 logfile="config.log"
2128
2129 # installation paths
2130 prefix_default="/usr/local"
2131 bindir_default='${prefix}/bin'
2132 datadir_default='${prefix}/share/avconv'
2133 docdir_default='${prefix}/share/doc/libav'
2134 incdir_default='${prefix}/include'
2135 libdir_default='${prefix}/lib'
2136 mandir_default='${prefix}/share/man'
2137 shlibdir_default="$libdir_default"
2138
2139 # toolchain
2140 ar_default="ar"
2141 cc_default="gcc"
2142 host_cc_default="gcc"
2143 cp_f="cp -f"
2144 ln_s="ln -s -f"
2145 nm_default="nm -g"
2146 objformat="elf"
2147 pkg_config_default=pkg-config
2148 ranlib="ranlib"
2149 strip="strip"
2150 yasmexe="yasm"
2151
2152 nogas=":"
2153
2154 # machine
2155 arch_default=$(uname -m)
2156 cpu="generic"
2157
2158 # OS
2159 target_os_default=$(tolower $(uname -s))
2160 host_os=$target_os_default
2161
2162 # configurable options
2163 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2164
2165 enable asm
2166 enable debug
2167 enable doc
2168 enable optimizations
2169 enable safe_bitstream_reader
2170 enable static
2171 enable swscale_alpha
2172
2173 # By default, enable only those hwaccels that have no external dependencies.
2174 enable dxva2 vdpau
2175
2176 # build settings
2177 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2178 LIBPREF="lib"
2179 LIBSUF=".a"
2180 FULLNAME='$(NAME)$(BUILDSUF)'
2181 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2182 SLIBPREF="lib"
2183 SLIBSUF=".so"
2184 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2185 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2186 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2187 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2188 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2189 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2190
2191 asflags_filter=echo
2192 cflags_filter=echo
2193 ldflags_filter=echo
2194
2195 AS_C='-c'
2196 AS_O='-o $@'
2197 CC_C='-c'
2198 CC_E='-E -o $@'
2199 CC_O='-o $@'
2200 LD_O='-o $@'
2201 LD_LIB='-l%'
2202 LD_PATH='-L'
2203 HOSTCC_C='-c'
2204 HOSTCC_E='-E -o $@'
2205 HOSTCC_O='-o $@'
2206 HOSTLD_O='-o $@'
2207
2208 host_libs='-lm'
2209 host_cflags_filter=echo
2210 host_ldflags_filter=echo
2211
2212 target_path='$(CURDIR)'
2213
2214 # since the object filename is not given with the -MM flag, the compiler
2215 # is only able to print the basename, and we must add the path ourselves
2216 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2217 DEPFLAGS='-MM'
2218
2219 # find source path
2220 if test -f configure; then
2221     source_path=.
2222 else
2223     source_path=$(cd $(dirname "$0"); pwd)
2224     echo "$source_path" | grep -q '[[:blank:]]' &&
2225         die "Out of tree builds are impossible with whitespace in source path."
2226     test -e "$source_path/config.h" &&
2227         die "Out of tree builds are impossible with config.h in source dir."
2228 fi
2229
2230 for v in "$@"; do
2231     r=${v#*=}
2232     l=${v%"$r"}
2233     r=$(sh_quote "$r")
2234     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2235 done
2236
2237 find_things(){
2238     thing=$1
2239     pattern=$2
2240     file=$source_path/$3
2241     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2242 }
2243
2244 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2245 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2246 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2247 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2248 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2249 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2250 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2251 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2252 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2253 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2254 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2255
2256 ALL_COMPONENTS="
2257     $BSF_LIST
2258     $DECODER_LIST
2259     $DEMUXER_LIST
2260     $ENCODER_LIST
2261     $FILTER_LIST
2262     $HWACCEL_LIST
2263     $INDEV_LIST
2264     $MUXER_LIST
2265     $OUTDEV_LIST
2266     $PARSER_LIST
2267     $PROTOCOL_LIST
2268 "
2269
2270 for n in $COMPONENT_LIST; do
2271     v=$(toupper ${n%s})_LIST
2272     eval enable \$$v
2273     eval ${n}_if_any="\$$v"
2274 done
2275
2276 enable $ARCH_EXT_LIST
2277
2278 die_unknown(){
2279     echo "Unknown option \"$1\"."
2280     echo "See $0 --help for available options."
2281     exit 1
2282 }
2283
2284 print_3_columns() {
2285     cat | tr ' ' '\n' | sort | pr -r -3 -t
2286 }
2287
2288 show_list() {
2289     suffix=_$1
2290     shift
2291     echo $* | sed s/$suffix//g | print_3_columns
2292     exit 0
2293 }
2294
2295 rand_list(){
2296     IFS=', '
2297     set -- $*
2298     unset IFS
2299     for thing; do
2300         comp=${thing%:*}
2301         prob=${thing#$comp}
2302         prob=${prob#:}
2303         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2304         echo "prob ${prob:-0.5}"
2305         printf '%s\n' $comp
2306     done
2307 }
2308
2309 do_random(){
2310     action=$1
2311     shift
2312     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2313     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2314 }
2315
2316 for opt do
2317     optval="${opt#*=}"
2318     case "$opt" in
2319         --extra-ldflags=*)
2320             add_ldflags $optval
2321         ;;
2322         --extra-libs=*)
2323             add_extralibs $optval
2324         ;;
2325         --disable-devices)
2326             disable $INDEV_LIST $OUTDEV_LIST
2327         ;;
2328         --enable-debug=*)
2329             debuglevel="$optval"
2330         ;;
2331         --disable-programs)
2332             disable $PROGRAM_LIST
2333         ;;
2334         --disable-everything)
2335             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2336         ;;
2337         --disable-all)
2338             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2339             disable $LIBRARY_LIST $PROGRAM_LIST doc
2340         ;;
2341         --enable-random|--disable-random)
2342             action=${opt%%-random}
2343             do_random ${action#--} $COMPONENT_LIST
2344         ;;
2345         --enable-random=*|--disable-random=*)
2346             action=${opt%%-random=*}
2347             do_random ${action#--} $optval
2348         ;;
2349         --enable-*=*|--disable-*=*)
2350             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2351             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2352             eval list=\$$(toupper $thing)_LIST
2353             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2354             $action $(filter "$name" $list)
2355         ;;
2356         --enable-?*|--disable-?*)
2357             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2358             if is_in $option $COMPONENT_LIST; then
2359                 test $action = disable && action=unset
2360                 eval $action \$$(toupper ${option%s})_LIST
2361             elif is_in $option $CMDLINE_SELECT; then
2362                 $action $option
2363             else
2364                 die_unknown $opt
2365             fi
2366         ;;
2367         --list-*)
2368             NAME="${opt#--list-}"
2369             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2370             NAME=${NAME%s}
2371             eval show_list $NAME \$$(toupper $NAME)_LIST
2372         ;;
2373         --help|-h) show_help
2374         ;;
2375         *)
2376             optname="${opt%%=*}"
2377             optname="${optname#--}"
2378             optname=$(echo "$optname" | sed 's/-/_/g')
2379             if is_in $optname $CMDLINE_SET; then
2380                 eval $optname='$optval'
2381             elif is_in $optname $CMDLINE_APPEND; then
2382                 append $optname "$optval"
2383             else
2384                 die_unknown $opt
2385             fi
2386         ;;
2387     esac
2388 done
2389
2390 disabled logging && logfile=/dev/null
2391
2392 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2393 set >> $logfile
2394
2395 test -n "$cross_prefix" && enable cross_compile
2396
2397 if enabled cross_compile; then
2398     test -n "$arch" && test -n "$target_os" ||
2399         die "Must specify target arch and OS when cross-compiling"
2400 fi
2401
2402 ar_default="${cross_prefix}${ar_default}"
2403 cc_default="${cross_prefix}${cc_default}"
2404 nm_default="${cross_prefix}${nm_default}"
2405 pkg_config_default="${cross_prefix}${pkg_config_default}"
2406 ranlib="${cross_prefix}${ranlib}"
2407 strip="${cross_prefix}${strip}"
2408
2409 sysinclude_default="${sysroot}/usr/include"
2410
2411 case "$toolchain" in
2412     clang-asan)
2413         cc_default="clang"
2414         add_cflags  -fsanitize=address
2415         add_ldflags -fsanitize=address
2416     ;;
2417     clang-tsan)
2418         cc_default="clang"
2419         add_cflags  -fsanitize=thread -pie
2420         add_ldflags -fsanitize=thread -pie
2421     ;;
2422     clang-usan)
2423         cc_default="clang"
2424         add_cflags  -fsanitize=undefined
2425         add_ldflags -fsanitize=undefined
2426     ;;
2427     gcc-asan)
2428         cc_default="gcc"
2429         add_cflags  -fsanitize=address
2430         add_ldflags -fsanitize=address
2431     ;;
2432     gcc-tsan)
2433         cc_default="gcc"
2434         add_cflags  -fsanitize=thread -pie -fPIC
2435         add_ldflags -fsanitize=thread -pie -fPIC
2436     ;;
2437     gcc-usan)
2438         cc_default="gcc"
2439         add_cflags  -fsanitize=undefined
2440         add_ldflags -fsanitize=undefined
2441     ;;
2442     valgrind-massif)
2443         target_exec_default="valgrind"
2444         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2445     ;;
2446     valgrind-memcheck)
2447         target_exec_default="valgrind"
2448         target_exec_args="--track-origins=yes --leak-check=full"
2449     ;;
2450     msvc)
2451         # Check whether the current MSVC version needs the C99 converter.
2452         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2453         # support enough of C99 to build libav. Default to the new
2454         # behaviour if the regexp was unable to match anything, since this
2455         # successfully parses the version number of existing supported
2456         # versions that require the converter (MSVC 2010 and 2012).
2457         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2458         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2459             cc_default="cl"
2460         else
2461             cc_default="c99wrap cl"
2462         fi
2463         ld_default="link"
2464         nm_default="dumpbin -symbols"
2465         ar_default="lib"
2466         target_os_default="win32"
2467         # Use a relative path for TMPDIR. This makes sure all the
2468         # ffconf temp files are written with a relative path, avoiding
2469         # issues with msys/win32 path conversion for MSVC parameters
2470         # such as -Fo<file> or -out:<file>.
2471         TMPDIR=.
2472     ;;
2473     icl)
2474         cc_default="icl"
2475         ld_default="xilink"
2476         nm_default="dumpbin -symbols"
2477         ar_default="xilib"
2478         target_os_default="win32"
2479         TMPDIR=.
2480     ;;
2481     gcov)
2482         add_cflags  -fprofile-arcs -ftest-coverage
2483         add_ldflags -fprofile-arcs -ftest-coverage
2484     ;;
2485     hardened)
2486         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2487         add_ldflags -Wl,-z,relro -Wl,-z,now
2488     ;;
2489     ?*)
2490         die "Unknown toolchain $toolchain"
2491     ;;
2492 esac
2493
2494 set_default arch cc pkg_config sysinclude target_exec target_os
2495 enabled cross_compile || host_cc_default=$cc
2496 set_default host_cc
2497
2498 if ! $pkg_config --version >/dev/null 2>&1; then
2499     warn "$pkg_config not found, library detection may fail."
2500     pkg_config=false
2501 fi
2502
2503 exesuf() {
2504     case $1 in
2505         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2506     esac
2507 }
2508
2509 EXESUF=$(exesuf $target_os)
2510 HOSTEXESUF=$(exesuf $host_os)
2511
2512 # set temporary file name
2513 : ${TMPDIR:=$TEMPDIR}
2514 : ${TMPDIR:=$TMP}
2515 : ${TMPDIR:=/tmp}
2516
2517 if ! check_cmd mktemp -u XXXXXX; then
2518     # simple replacement for missing mktemp
2519     # NOT SAFE FOR GENERAL USE
2520     mktemp(){
2521         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2522     }
2523 fi
2524
2525 tmpfile(){
2526     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2527         (set -C; exec > $tmp) 2>/dev/null ||
2528         die "Unable to create temporary file in $TMPDIR."
2529     append TMPFILES $tmp
2530     eval $1=$tmp
2531 }
2532
2533 trap 'rm -f -- $TMPFILES' EXIT
2534
2535 tmpfile TMPASM .asm
2536 tmpfile TMPC   .c
2537 tmpfile TMPE   $EXESUF
2538 tmpfile TMPH   .h
2539 tmpfile TMPO   .o
2540 tmpfile TMPS   .S
2541 tmpfile TMPSH  .sh
2542 tmpfile TMPV   .ver
2543
2544 unset -f mktemp
2545
2546 chmod +x $TMPE
2547
2548 # make sure we can execute files in $TMPDIR
2549 cat > $TMPSH 2>> $logfile <<EOF
2550 #! /bin/sh
2551 EOF
2552 chmod +x $TMPSH >> $logfile 2>&1
2553 if ! $TMPSH >> $logfile 2>&1; then
2554     cat <<EOF
2555 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2556 variable to another directory and make sure that it is not mounted noexec.
2557 EOF
2558     die "Sanity test failed."
2559 fi
2560
2561 ccc_flags(){
2562     for flag; do
2563         case $flag in
2564             -std=c99)           echo -c99                       ;;
2565             -mcpu=*)            echo -arch ${flag#*=}           ;;
2566             -mieee)             echo -ieee                      ;;
2567             -O*|-fast)          echo $flag                      ;;
2568             -fno-math-errno)    echo -assume nomath_errno       ;;
2569             -g)                 echo -g3                        ;;
2570             -Wall)              echo -msg_enable level2         ;;
2571             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2572             -Wl,*)              echo $flag                      ;;
2573             -f*|-W*)                                            ;;
2574             *)                  echo $flag                      ;;
2575         esac
2576    done
2577 }
2578
2579 cparser_flags(){
2580     for flag; do
2581         case $flag in
2582             -Wno-switch)             echo -Wno-switch-enum ;;
2583             -Wno-format-zero-length) ;;
2584             -Wdisabled-optimization) ;;
2585             -Wno-pointer-sign)       echo -Wno-other ;;
2586             *)                       echo $flag ;;
2587         esac
2588     done
2589 }
2590
2591 msvc_common_flags(){
2592     for flag; do
2593         case $flag in
2594             # In addition to specifying certain flags under the compiler
2595             # specific filters, they must be specified here as well or else the
2596             # generic catch all at the bottom will print the original flag.
2597             -Wall)                ;;
2598             -std=c99)             ;;
2599             # Common flags
2600             -fomit-frame-pointer) ;;
2601             -g)                   echo -Z7 ;;
2602             -fno-math-errno)      ;;
2603             -fno-common)          ;;
2604             -fno-signed-zeros)    ;;
2605             -fPIC)                ;;
2606             -mthumb)              ;;
2607             -march=*)             ;;
2608             -lz)                  echo zlib.lib ;;
2609             -lavifil32)           echo vfw32.lib ;;
2610             -lavicap32)           echo vfw32.lib user32.lib ;;
2611             -l*)                  echo ${flag#-l}.lib ;;
2612             *)                    echo $flag ;;
2613         esac
2614     done
2615 }
2616
2617 msvc_flags(){
2618     msvc_common_flags "$@"
2619     for flag; do
2620         case $flag in
2621             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2622                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2623                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2624                                        -wd4273 ;;
2625         esac
2626     done
2627 }
2628
2629 icl_flags(){
2630     msvc_common_flags "$@"
2631     for flag; do
2632         case $flag in
2633             # Despite what Intel's documentation says -Wall, which is supported
2634             # on Windows, does enable remarks so disable them here.
2635             -Wall)                echo $flag -Qdiag-disable:remark ;;
2636             -std=c99)             echo -Qstd=c99 ;;
2637         esac
2638     done
2639 }
2640
2641 pgi_flags(){
2642     for flag; do
2643         case $flag in
2644             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2645             -fomit-frame-pointer) echo -Mnoframe ;;
2646             -g)                   echo -gopt ;;
2647             *)                    echo $flag ;;
2648         esac
2649     done
2650 }
2651
2652 suncc_flags(){
2653     for flag; do
2654         case $flag in
2655             -march=*|-mcpu=*)
2656                 case "${flag#*=}" in
2657                     native)                   echo -xtarget=native       ;;
2658                     v9|niagara)               echo -xarch=sparc          ;;
2659                     ultrasparc)               echo -xarch=sparcvis       ;;
2660                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2661                     i586|pentium)             echo -xchip=pentium        ;;
2662                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2663                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2664                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2665                     pentium4*)          echo -xtarget=pentium4           ;;
2666                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2667                     *-sse3)             echo -xarch=sse3                 ;;
2668                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2669                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2670                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2671                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2672                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2673                     k8|opteron|athlon64|athlon-fx)
2674                                                echo -xarch=sse2a         ;;
2675                     athlon*)                   echo -xarch=pentium_proa  ;;
2676                 esac
2677                 ;;
2678             -std=c99)             echo -xc99              ;;
2679             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2680             -fPIC)                echo -KPIC -xcode=pic32 ;;
2681             -W*,*)                echo $flag              ;;
2682             -f*-*|-W*|-mimpure-text)                      ;;
2683             -shared)              echo -G                 ;;
2684             *)                    echo $flag              ;;
2685         esac
2686     done
2687 }
2688
2689 tms470_flags(){
2690     for flag; do
2691         case $flag in
2692             -march=*|-mcpu=*)
2693                 case "${flag#*=}" in
2694                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2695                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2696                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2697                     armv6*|arm11*)          echo -mv=6   ;;
2698                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2699                                             echo -mv=5e  ;;
2700                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2701                 esac
2702                 ;;
2703             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2704             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2705             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2706             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2707             -msoft-float)   echo --float_support=vfplib       ;;
2708             -O[0-3]|-mf=*)  echo $flag                        ;;
2709             -g)             echo -g -mn                       ;;
2710             -pds=*)         echo $flag                        ;;
2711             -D*|-I*)        echo $flag                        ;;
2712             --gcc|--abi=*)  echo $flag                        ;;
2713             -me)            echo $flag                        ;;
2714         esac
2715     done
2716 }
2717
2718 probe_cc(){
2719     pfx=$1
2720     _cc=$2
2721
2722     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2723     unset _ld_o _ldflags _ld_lib _ld_path
2724     unset _depflags _DEPCMD _DEPFLAGS
2725     _flags_filter=echo
2726
2727     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2728         _type=llvm_gcc
2729         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2730         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2731         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2732         _cflags_speed='-O3'
2733         _cflags_size='-Os'
2734     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2735         _type=gcc
2736         gcc_version=$($_cc --version | head -n1)
2737         gcc_basever=$($_cc -dumpversion)
2738         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2739         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2740         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2741         if ! $_cc -dumpversion | grep -q '^2\.'; then
2742             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2743         fi
2744         _cflags_speed='-O3'
2745         _cflags_size='-Os'
2746     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2747         _type=icc
2748         _ident=$($_cc --version | head -n1)
2749         _depflags='-MMD'
2750         _cflags_speed='-O3'
2751         _cflags_size='-Os'
2752         _cflags_noopt='-O1'
2753     elif $_cc -v 2>&1 | grep -q xlc; then
2754         _type=xlc
2755         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2756         _cflags_speed='-O5'
2757         _cflags_size='-O5 -qcompact'
2758     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2759         _type=ccc
2760         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2761         _DEPFLAGS='-M'
2762         _cflags_speed='-fast'
2763         _cflags_size='-O1'
2764         _flags_filter=ccc_flags
2765     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2766         test -d "$sysroot" || die "No valid sysroot specified."
2767         _type=armcc
2768         _ident=$($_cc --vsn | head -n1)
2769         armcc_conf="$PWD/armcc.conf"
2770         $_cc --arm_linux_configure                 \
2771              --arm_linux_config_file="$armcc_conf" \
2772              --configure_sysroot="$sysroot"        \
2773              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2774              die "Error creating armcc configuration file."
2775         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2776         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2777         as_default="${cross_prefix}gcc"
2778         _depflags='-MMD'
2779         _cflags_speed='-O3'
2780         _cflags_size='-Os'
2781     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2782         _type=tms470
2783         _ident=$($_cc -version | head -n1 | tr -s ' ')
2784         _flags='--gcc --abi=eabi -me'
2785         _cc_e='-ppl -fe=$@'
2786         _cc_o='-fe=$@'
2787         _depflags='-ppa -ppd=$(@:.o=.d)'
2788         _cflags_speed='-O3 -mf=5'
2789         _cflags_size='-O3 -mf=2'
2790         _flags_filter=tms470_flags
2791     elif $_cc -v 2>&1 | grep -q clang; then
2792         _type=clang
2793         _ident=$($_cc --version | head -n1)
2794         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2795         _cflags_speed='-O3'
2796         _cflags_size='-Os'
2797     elif $_cc -V 2>&1 | grep -q Sun; then
2798         _type=suncc
2799         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2800         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2801         _DEPFLAGS='-xM1 -xc99'
2802         _ldflags='-std=c99'
2803         _cflags_speed='-O5'
2804         _cflags_size='-O5 -xspace'
2805         _flags_filter=suncc_flags
2806     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2807         _type=pathscale
2808         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2809         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2810         _cflags_speed='-O2'
2811         _cflags_size='-Os'
2812         _flags_filter='filter_out -Wdisabled-optimization'
2813     elif $_cc -v 2>&1 | grep -q Open64; then
2814         _type=open64
2815         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2816         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2817         _cflags_speed='-O2'
2818         _cflags_size='-Os'
2819         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2820     elif $_cc -V 2>&1 | grep -q Portland; then
2821         _type=pgi
2822         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2823         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2824         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2825         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2826         _cflags_noopt="-O1"
2827         _flags_filter=pgi_flags
2828     elif $_cc 2>&1 | grep -q Microsoft; then
2829         _type=msvc
2830         _ident=$($cc 2>&1 | head -n1)
2831         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2832         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2833         _cflags_speed="-O2"
2834         _cflags_size="-O1"
2835         if $_cc 2>&1 | grep -q Linker; then
2836             _ld_o='-out:$@'
2837         else
2838             _ld_o='-Fe$@'
2839         fi
2840         _cc_o='-Fo$@'
2841         _cc_e='-P -Fi$@'
2842         _flags_filter=msvc_flags
2843         _ld_lib='lib%.a'
2844         _ld_path='-libpath:'
2845         _flags='-nologo'
2846         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2847         if [ $pfx = hostcc ]; then
2848             append _cflags -Dsnprintf=_snprintf
2849         fi
2850     elif $_cc 2>&1 | grep -q Intel; then
2851         _type=icl
2852         _ident=$($cc 2>&1 | head -n1)
2853         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2854         # Not only is O3 broken on 13.x+ but it is slower on all previous
2855         # versions (tested) as well.
2856         _cflags_speed="-O2"
2857         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2858         if $_cc 2>&1 | grep -q Linker; then
2859             _ld_o='-out:$@'
2860         else
2861             _ld_o='-Fe$@'
2862         fi
2863         _cc_o='-Fo$@'
2864         _cc_e='-P'
2865         _flags_filter=icl_flags
2866         _ld_lib='lib%.a'
2867         _ld_path='-libpath:'
2868         # -Qdiag-error to make icl error when seeing certain unknown arguments
2869         _flags='-nologo -Qdiag-error:4044,10157'
2870         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2871         # with MSVC which enables it by default.
2872         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2873         if [ $pfx = hostcc ]; then
2874             append _cflags -Dsnprintf=_snprintf
2875         fi
2876     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2877         _type=cparser
2878         _ident=$($_cc --version | head -n1)
2879         _depflags='-MMD'
2880         _cflags_speed='-O4'
2881         _cflags_size='-O2'
2882         _flags_filter=cparser_flags
2883     fi
2884
2885     eval ${pfx}_type=\$_type
2886     eval ${pfx}_ident=\$_ident
2887 }
2888
2889 set_ccvars(){
2890     eval ${1}_C=\${_cc_c-\${${1}_C}}
2891     eval ${1}_E=\${_cc_e-\${${1}_E}}
2892     eval ${1}_O=\${_cc_o-\${${1}_O}}
2893
2894     if [ -n "$_depflags" ]; then
2895         eval ${1}_DEPFLAGS=\$_depflags
2896     else
2897         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2898         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2899         eval DEP${1}FLAGS=\$_flags
2900     fi
2901 }
2902
2903 probe_cc cc "$cc"
2904 cflags_filter=$_flags_filter
2905 cflags_speed=$_cflags_speed
2906 cflags_size=$_cflags_size
2907 cflags_noopt=$_cflags_noopt
2908 add_cflags $_flags $_cflags
2909 cc_ldflags=$_ldflags
2910 set_ccvars CC
2911
2912 probe_cc hostcc "$host_cc"
2913 host_cflags_filter=$_flags_filter
2914 add_host_cflags  $_flags $_cflags
2915 set_ccvars HOSTCC
2916
2917 test -n "$cc_type" && enable $cc_type ||
2918     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2919
2920 : ${as_default:=$cc}
2921 : ${dep_cc_default:=$cc}
2922 : ${ld_default:=$cc}
2923 : ${host_ld_default:=$host_cc}
2924 set_default ar as dep_cc ld host_ld
2925
2926 probe_cc as "$as"
2927 asflags_filter=$_flags_filter
2928 add_asflags $_flags $_cflags
2929 set_ccvars AS
2930
2931 probe_cc ld "$ld"
2932 ldflags_filter=$_flags_filter
2933 add_ldflags $_flags $_ldflags
2934 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2935 LD_O=${_ld_o-$LD_O}
2936 LD_LIB=${_ld_lib-$LD_LIB}
2937 LD_PATH=${_ld_path-$LD_PATH}
2938
2939 probe_cc hostld "$host_ld"
2940 host_ldflags_filter=$_flags_filter
2941 add_host_ldflags $_flags $_ldflags
2942 HOSTLD_O=${_ld_o-$HOSTLD_O}
2943
2944 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2945     probe_cc depcc "$dep_cc"
2946     CCDEP=${_DEPCMD:-$DEPCMD}
2947     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2948     DEPCCFLAGS=$_flags
2949 fi
2950
2951 if $ar 2>&1 | grep -q Microsoft; then
2952     arflags="-nologo"
2953     ar_o='-out:$@'
2954 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2955     arflags="rq"
2956     ar_o='$@'
2957 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2958     arflags='-Xany -r -c'
2959     ar_o='$@'
2960 else
2961     arflags="rc"
2962     ar_o='$@'
2963 fi
2964
2965 add_cflags $extra_cflags
2966 add_asflags $extra_cflags
2967
2968 if test -n "$sysroot"; then
2969     case "$cc_type" in
2970         gcc|llvm_gcc|clang)
2971             add_cppflags --sysroot="$sysroot"
2972             add_ldflags --sysroot="$sysroot"
2973         ;;
2974         tms470)
2975             add_cppflags -I"$sysinclude"
2976             add_ldflags  --sysroot="$sysroot"
2977         ;;
2978     esac
2979 fi
2980
2981 if test "$cpu" = host; then
2982     enabled cross_compile &&
2983         die "--cpu=host makes no sense when cross-compiling."
2984
2985     case "$cc_type" in
2986         gcc|llvm_gcc)
2987             check_native(){
2988                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2989                 sed -n "/cc1.*$1=/{
2990                             s/.*$1=\\([^ ]*\\).*/\\1/
2991                             p
2992                             q
2993                         }" $TMPE
2994             }
2995             cpu=$(check_native -march || check_native -mcpu)
2996         ;;
2997     esac
2998
2999     test "${cpu:-host}" = host &&
3000         die "--cpu=host not supported with compiler $cc"
3001 fi
3002
3003 # Deal with common $arch aliases
3004 case "$arch" in
3005     aarch64|arm64)
3006         arch="aarch64"
3007     ;;
3008     arm*)
3009         arch="arm"
3010     ;;
3011     mips*|IP*)
3012         arch="mips"
3013     ;;
3014     parisc*|hppa*)
3015         arch="parisc"
3016     ;;
3017     "Power Macintosh"|ppc*|powerpc*)
3018         arch="ppc"
3019     ;;
3020     s390|s390x)
3021         arch="s390"
3022     ;;
3023     sh4|sh)
3024         arch="sh4"
3025     ;;
3026     sun4u|sparc*)
3027         arch="sparc"
3028     ;;
3029     tilegx|tile-gx)
3030         arch="tilegx"
3031     ;;
3032     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3033         arch="x86"
3034     ;;
3035 esac
3036
3037 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3038 enable $arch
3039
3040 # Add processor-specific flags
3041 if enabled aarch64; then
3042
3043     case $cpu in
3044         armv*)
3045             cpuflags="-march=$cpu"
3046         ;;
3047         *)
3048             cpuflags="-mcpu=$cpu"
3049         ;;
3050     esac
3051
3052 elif enabled alpha; then
3053
3054     cpuflags="-mcpu=$cpu"
3055
3056 elif enabled arm; then
3057
3058     check_arm_arch() {
3059         check_cpp_condition stddef.h \
3060             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3061             $cpuflags
3062     }
3063
3064     probe_arm_arch() {
3065         if   check_arm_arch 4;        then echo armv4;
3066         elif check_arm_arch 4T;       then echo armv4t;
3067         elif check_arm_arch 5;        then echo armv5;
3068         elif check_arm_arch 5E;       then echo armv5e;
3069         elif check_arm_arch 5T;       then echo armv5t;
3070         elif check_arm_arch 5TE;      then echo armv5te;
3071         elif check_arm_arch 5TEJ;     then echo armv5te;
3072         elif check_arm_arch 6;        then echo armv6;
3073         elif check_arm_arch 6J;       then echo armv6j;
3074         elif check_arm_arch 6K;       then echo armv6k;
3075         elif check_arm_arch 6Z;       then echo armv6z;
3076         elif check_arm_arch 6ZK;      then echo armv6zk;
3077         elif check_arm_arch 6T2;      then echo armv6t2;
3078         elif check_arm_arch 7;        then echo armv7;
3079         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3080         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3081         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3082         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3083         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3084         fi
3085     }
3086
3087     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3088
3089     case $cpu in
3090         armv*)
3091             cpuflags="-march=$cpu"
3092             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3093         ;;
3094         *)
3095             cpuflags="-mcpu=$cpu"
3096             case $cpu in
3097                 cortex-a*)                               subarch=armv7a  ;;
3098                 cortex-r*)                               subarch=armv7r  ;;
3099                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3100                 arm11*)                                  subarch=armv6   ;;
3101                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3102                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3103                 *)                             subarch=$(probe_arm_arch) ;;
3104             esac
3105         ;;
3106     esac
3107
3108     case "$subarch" in
3109         armv5t*)    enable fast_clz                ;;
3110         armv[6-8]*) enable fast_clz fast_unaligned ;;
3111     esac
3112
3113 elif enabled avr32; then
3114
3115     case $cpu in
3116         ap7[02]0[0-2])
3117             subarch="avr32_ap"
3118             cpuflags="-mpart=$cpu"
3119         ;;
3120         ap)
3121             subarch="avr32_ap"
3122             cpuflags="-march=$cpu"
3123         ;;
3124         uc3[ab]*)
3125             subarch="avr32_uc"
3126             cpuflags="-mcpu=$cpu"
3127         ;;
3128         uc)
3129             subarch="avr32_uc"
3130             cpuflags="-march=$cpu"
3131         ;;
3132     esac
3133
3134 elif enabled bfin; then
3135
3136     cpuflags="-mcpu=$cpu"
3137
3138 elif enabled mips; then
3139
3140     cpuflags="-march=$cpu"
3141
3142 elif enabled ppc; then
3143
3144     disable ldbrx
3145
3146     case $(tolower $cpu) in
3147         601|ppc601|powerpc601)
3148             cpuflags="-mcpu=601"
3149             disable altivec
3150         ;;
3151         603*|ppc603*|powerpc603*)
3152             cpuflags="-mcpu=603"
3153             disable altivec
3154         ;;
3155         604*|ppc604*|powerpc604*)
3156             cpuflags="-mcpu=604"
3157             disable altivec
3158         ;;
3159         g3|75*|ppc75*|powerpc75*)
3160             cpuflags="-mcpu=750"
3161             disable altivec
3162         ;;
3163         g4|745*|ppc745*|powerpc745*)
3164             cpuflags="-mcpu=7450"
3165         ;;
3166         74*|ppc74*|powerpc74*)
3167             cpuflags="-mcpu=7400"
3168         ;;
3169         g5|970|ppc970|powerpc970)
3170             cpuflags="-mcpu=970"
3171         ;;
3172         power[3-7]*)
3173             cpuflags="-mcpu=$cpu"
3174         ;;
3175         cell)
3176             cpuflags="-mcpu=cell"
3177             enable ldbrx
3178         ;;
3179         e500mc)
3180             cpuflags="-mcpu=e500mc"
3181             disable altivec
3182         ;;
3183         e500v2)
3184             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3185             disable altivec
3186             disable dcbzl
3187         ;;
3188         e500)
3189             cpuflags="-mcpu=8540 -mhard-float"
3190             disable altivec
3191             disable dcbzl
3192         ;;
3193     esac
3194
3195 elif enabled sparc; then
3196
3197     case $cpu in
3198         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3199             cpuflags="-mcpu=$cpu"
3200         ;;
3201         ultrasparc*|niagara[234])
3202             cpuflags="-mcpu=$cpu"
3203         ;;
3204     esac
3205
3206 elif enabled x86; then
3207
3208     case $cpu in
3209         i[345]86|pentium)
3210             cpuflags="-march=$cpu"
3211             disable mmx
3212         ;;
3213         # targets that do NOT support nopl and conditional mov (cmov)
3214         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3215             cpuflags="-march=$cpu"
3216             disable i686
3217         ;;
3218         # targets that do support nopl and conditional mov (cmov)
3219         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3220             cpuflags="-march=$cpu"
3221             enable i686
3222             enable fast_cmov
3223         ;;
3224         # targets that do support conditional mov but on which it's slow
3225         pentium4|pentium4m|prescott|nocona)
3226             cpuflags="-march=$cpu"
3227             enable i686
3228             disable fast_cmov
3229         ;;
3230     esac
3231
3232 fi
3233
3234 if [ "$cpu" != generic ]; then
3235     add_cflags  $cpuflags
3236     add_asflags $cpuflags
3237 fi
3238
3239 # compiler sanity check
3240 check_exec <<EOF
3241 int main(void){ return 0; }
3242 EOF
3243 if test "$?" != 0; then
3244     echo "$cc is unable to create an executable file."
3245     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3246         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3247         echo "Only do this if you know what cross compiling means."
3248     fi
3249     die "C compiler test failed."
3250 fi
3251
3252 add_cppflags -D_ISOC99_SOURCE
3253 check_cflags -std=c99
3254 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3255 #include <stdlib.h>
3256 EOF
3257 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3258 #include <stdlib.h>
3259 EOF
3260
3261 add_host_cppflags -D_ISOC99_SOURCE
3262 check_host_cflags -std=c99
3263 check_host_cflags -Wall
3264 check_host_cflags -O3
3265
3266 check_64bit(){
3267     arch32=$1
3268     arch64=$2
3269     expr=$3
3270     check_code cc "" "int test[2*($expr) - 1]" &&
3271         subarch=$arch64 || subarch=$arch32
3272 }
3273
3274 case "$arch" in
3275     aarch64|alpha|ia64)
3276         spic=$shared
3277     ;;
3278     mips)
3279         check_64bit mips mips64 '_MIPS_SIM > 1'
3280         spic=$shared
3281     ;;
3282     parisc)
3283         check_64bit parisc parisc64 'sizeof(void *) > 4'
3284         spic=$shared
3285     ;;
3286     ppc)
3287         check_64bit ppc ppc64 'sizeof(void *) > 4'
3288         spic=$shared
3289     ;;
3290     s390)
3291         check_64bit s390 s390x 'sizeof(void *) > 4'
3292         spic=$shared
3293     ;;
3294     sparc)
3295         check_64bit sparc sparc64 'sizeof(void *) > 4'
3296         spic=$shared
3297     ;;
3298     x86)
3299         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3300         if test "$subarch" = "x86_64"; then
3301             spic=$shared
3302         fi
3303     ;;
3304 esac
3305
3306 enable $subarch
3307 enabled spic && enable_weak pic
3308
3309 # OS specific
3310 case $target_os in
3311     aix)
3312         SHFLAGS=-shared
3313         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3314         enabled shared && add_ldflags -Wl,-brtl
3315         ;;
3316     haiku)
3317         prefix_default="/boot/common"
3318         network_extralibs="-lnetwork"
3319         host_libs=
3320         ;;
3321     sunos)
3322         SHFLAGS='-shared -Wl,-h,$$(@F)'
3323         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3324         network_extralibs="-lsocket -lnsl"
3325         # When using suncc to build, the Solaris linker will mark
3326         # an executable with each instruction set encountered by
3327         # the Solaris assembler.  As our libraries contain their own
3328         # guards for processor-specific code, instead suppress
3329         # generation of the HWCAPS ELF section on Solaris x86 only.
3330         enabled_all suncc x86 &&
3331             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3332             add_ldflags -Wl,-M,mapfile
3333         nm_default='nm -P -g'
3334         ;;
3335     netbsd)
3336         disable symver
3337         oss_indev_extralibs="-lossaudio"
3338         oss_outdev_extralibs="-lossaudio"
3339         ;;
3340     openbsd|bitrig)
3341         disable symver
3342         SHFLAGS='-shared'
3343         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3344         SLIB_INSTALL_LINKS=
3345         oss_indev_extralibs="-lossaudio"
3346         oss_outdev_extralibs="-lossaudio"
3347         ;;
3348     dragonfly)
3349         disable symver
3350         ;;
3351     freebsd)
3352         ;;
3353     bsd/os)
3354         add_extralibs -lpoll -lgnugetopt
3355         ;;
3356     darwin)
3357         gas="gas-preprocessor.pl $cc"
3358         enabled ppc && add_asflags -force_cpusubtype_ALL
3359         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3360         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3361         add_ldflags -Wl,-dynamic,-search_paths_first
3362         SLIBSUF=".dylib"
3363         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3364         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3365         objformat="macho"
3366         enabled x86_64 && objformat="macho64"
3367         enabled_any pic shared ||
3368             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3369         ;;
3370     mingw32*)
3371         if test $target_os = "mingw32ce"; then
3372             disable network
3373         else
3374             target_os=mingw32
3375         fi
3376         LIBTARGET=i386
3377         if enabled x86_64; then
3378             LIBTARGET="i386:x86-64"
3379         elif enabled arm; then
3380             LIBTARGET=arm-wince
3381         fi
3382         check_ldflags -Wl,--nxcompat
3383         check_ldflags -Wl,--dynamicbase
3384         shlibdir_default="$bindir_default"
3385         SLIBPREF=""
3386         SLIBSUF=".dll"
3387         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3388         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3389         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3390         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3391         SLIB_INSTALL_LINKS=
3392         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3393         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3394         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3395         objformat="win32"
3396         dlltool="${cross_prefix}dlltool"
3397         ranlib=:
3398         enable dos_paths
3399         ;;
3400     win32|win64)
3401         disable symver
3402         if enabled shared; then
3403             # Link to the import library instead of the normal static library
3404             # for shared libs.
3405             LD_LIB='%.lib'
3406             # Cannot build both shared and static libs with MSVC or icl.
3407             disable static
3408         fi
3409         shlibdir_default="$bindir_default"
3410         SLIBPREF=""
3411         SLIBSUF=".dll"
3412         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3413         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3414         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3415         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3416         SLIB_INSTALL_LINKS=
3417         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3418         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3419         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3420         objformat="win32"
3421         ranlib=:
3422         enable dos_paths
3423         ;;
3424     cygwin*)
3425         target_os=cygwin
3426         shlibdir_default="$bindir_default"
3427         SLIBPREF="cyg"
3428         SLIBSUF=".dll"
3429         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3430         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3431         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3432         SLIB_INSTALL_LINKS=
3433         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3434         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3435         objformat="win32"
3436         enable dos_paths
3437         ;;
3438     *-dos|freedos|opendos)
3439         network_extralibs="-lsocket"
3440         objformat="coff"
3441         enable dos_paths
3442         add_cppflags -U__STRICT_ANSI__
3443         ;;
3444     linux)
3445         enable dv1394
3446         ;;
3447     irix*)
3448         target_os=irix
3449         ranlib="echo ignoring ranlib"
3450         ;;
3451     os/2*)
3452         ln_s="cp -f"
3453         objformat="aout"
3454         add_cppflags -D_GNU_SOURCE
3455         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3456         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3457         LIBSUF="_s.a"
3458         SLIBPREF=""
3459         SLIBSUF=".dll"
3460         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3461         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3462         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3463             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3464             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3465             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3466             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3467             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3468         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3469             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3470         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3471         enable dos_paths
3472         ;;
3473     gnu/kfreebsd)
3474         add_cppflags -D_BSD_SOURCE
3475         ;;
3476     gnu)
3477         ;;
3478     qnx)
3479         add_cppflags -D_QNX_SOURCE
3480         network_extralibs="-lsocket"
3481         ;;
3482     symbian)
3483         SLIBSUF=".dll"
3484         enable dos_paths
3485         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3486         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3487         add_ldflags -Wl,--target1-abs,--no-undefined \
3488                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3489                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3490         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3491                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3492                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3493         ;;
3494     osf1)
3495         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3496         ;;
3497     minix)
3498         ;;
3499     plan9)
3500         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3501                      -D_REENTRANT_SOURCE        \
3502                      -D_RESEARCH_SOURCE         \
3503                      -DFD_SETSIZE=96            \
3504                      -DHAVE_SOCK_OPTS
3505         add_compat strtod.o strtod=avpriv_strtod
3506         network_extralibs='-lbsd'
3507         exeobjs=compat/plan9/main.o
3508         disable avserver
3509         cp_f='cp'
3510         ;;
3511     none)
3512         ;;
3513     *)
3514         die "Unknown OS '$target_os'."
3515         ;;
3516 esac
3517
3518 # determine libc flavour
3519
3520 probe_libc(){
3521     pfx=$1
3522     pfx_no_=${pfx%_}
3523     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3524     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3525         eval ${pfx}libc_type=uclibc
3526         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3527     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3528         eval ${pfx}libc_type=glibc
3529         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3530     # MinGW headers can be installed on Cygwin, so check for newlib first.
3531     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3532         eval ${pfx}libc_type=newlib
3533         add_${pfx}cppflags -U__STRICT_ANSI__
3534     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3535     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3536         eval ${pfx}libc_type=mingw64
3537         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3538         eval test \$${pfx_no_}cc_type = "gcc" &&
3539             add_${pfx}cppflags -D__printf__=__gnu_printf__
3540     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3541          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3542         eval ${pfx}libc_type=mingw32
3543         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3544             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3545             die "ERROR: MinGW32 runtime version must be >= 3.15."
3546         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3547         eval test \$${pfx_no_}cc_type = "gcc" &&
3548             add_${pfx}cppflags -D__printf__=__gnu_printf__
3549     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3550         eval ${pfx}libc_type=msvcrt
3551         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3552         # 0x601 by default unless something else is set by the user.
3553         # This can easily lead to us detecting functions only present
3554         # in such new versions and producing binaries requiring windows 7.0.
3555         # Therefore explicitly set the default to XP unless the user has
3556         # set something else on the command line.
3557         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3558             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3559     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3560         eval ${pfx}libc_type=klibc
3561     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3562         eval ${pfx}libc_type=bionic
3563     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3564         eval ${pfx}libc_type=solaris
3565         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3566     fi
3567 }
3568
3569 probe_libc
3570 test -n "$libc_type" && enable libc_$libc_type
3571 probe_libc host_
3572 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3573
3574 case $libc_type in
3575     bionic)
3576         add_compat strtod.o strtod=avpriv_strtod
3577         ;;
3578     msvcrt)
3579         add_compat strtod.o strtod=avpriv_strtod
3580         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3581                                      _snprintf=avpriv_snprintf  \
3582                                      vsnprintf=avpriv_vsnprintf
3583         ;;
3584 esac
3585
3586 # hacks for compiler/libc/os combinations
3587
3588 if enabled_all tms470 libc_glibc; then
3589     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3590     add_cppflags -D__USER_LABEL_PREFIX__=
3591     add_cppflags -D__builtin_memset=memset
3592     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3593     add_cflags   -pds=48    # incompatible redefinition of macro
3594 fi
3595
3596 if enabled_all ccc libc_glibc; then
3597     add_ldflags -Wl,-z,now  # calls to libots crash without this
3598 fi
3599
3600 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3601     add_cppflags '-I\$(SRC_PATH)/compat/float'
3602
3603 esc(){
3604     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3605 }
3606
3607 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3608
3609 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3610
3611 set_default $PATHS_LIST
3612 set_default nm
3613
3614 # we need to build at least one lib type
3615 if ! enabled_any static shared; then
3616     cat <<EOF
3617 At least one library type must be built.
3618 Specify --enable-static to build the static libraries or --enable-shared to
3619 build the shared libraries as well. To only build the shared libraries specify
3620 --disable-static in addition to --enable-shared.
3621 EOF
3622     exit 1;
3623 fi
3624
3625 die_license_disabled() {
3626     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3627 }
3628
3629 die_license_disabled gpl libcdio
3630 die_license_disabled gpl libx264
3631 die_license_disabled gpl libx265
3632 die_license_disabled gpl libxavs
3633 die_license_disabled gpl libxvid
3634 die_license_disabled gpl x11grab
3635
3636 die_license_disabled nonfree libfaac
3637 die_license_disabled nonfree libfdk_aac
3638 die_license_disabled nonfree openssl
3639
3640 die_license_disabled version3 libopencore_amrnb
3641 die_license_disabled version3 libopencore_amrwb
3642 die_license_disabled version3 libvo_aacenc
3643 die_license_disabled version3 libvo_amrwbenc
3644
3645 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3646
3647 disabled optimizations || check_cflags -fomit-frame-pointer
3648
3649 enable_weak_pic() {
3650     disabled pic && return
3651     enable pic
3652     add_cppflags -DPIC
3653     case "$target_os" in
3654     mingw*|cygwin*)
3655         ;;
3656     *)
3657         add_cflags -fPIC
3658         ;;
3659     esac
3660     add_asflags  -fPIC
3661 }
3662
3663 enabled pic && enable_weak_pic
3664
3665 check_cc <<EOF || die "Symbol mangling check failed."
3666 int ff_extern;
3667 EOF
3668 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3669 extern_prefix=${sym%%ff_extern*}
3670
3671 check_cc <<EOF && enable_weak inline_asm
3672 void foo(void) { __asm__ volatile ("" ::); }
3673 EOF
3674
3675 _restrict=
3676 for restrict_keyword in restrict __restrict__ __restrict; do
3677     check_cc <<EOF && _restrict=$restrict_keyword && break
3678 void foo(char * $restrict_keyword p);
3679 EOF
3680 done
3681
3682 check_cc <<EOF && enable pragma_deprecated
3683 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3684 EOF
3685
3686 check_cc <<EOF && enable attribute_packed
3687 struct { int x; } __attribute__((packed)) x;
3688 EOF
3689
3690 check_cc <<EOF && enable attribute_may_alias
3691 union { int x; } __attribute__((may_alias)) x;
3692 EOF
3693
3694 check_cc <<EOF || die "endian test failed"
3695 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3696 EOF
3697 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3698
3699 check_inline_asm inline_asm_labels '"1:\n"'
3700
3701 if enabled aarch64; then
3702     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3703     # internal assembler in clang 3.3 does not support this instruction
3704     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3705     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3706
3707     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3708
3709 elif enabled alpha; then
3710
3711     check_cflags -mieee
3712
3713 elif enabled arm; then
3714
3715     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3716     enabled thumb && check_cflags -mthumb || check_cflags -marm
3717     nogas=die
3718
3719     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3720         enable vfp_args
3721     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3722         case "${cross_prefix:-$cc}" in
3723             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3724             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3725 __asm__ (".eabi_attribute 28, 1");
3726 int main(void) { return 0; }
3727 EOF
3728         esac
3729         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3730     fi
3731
3732     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3733     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3734     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3735     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3736     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3737     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3738
3739     [ $target_os = linux ] ||
3740         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3741             $ARCH_EXT_LIST_ARM
3742
3743     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3744
3745     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3746
3747 elif enabled mips; then
3748
3749     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3750
3751 elif enabled parisc; then
3752
3753     if enabled gcc; then
3754         case $($cc -dumpversion) in
3755             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3756         esac
3757     fi
3758
3759 elif enabled ppc; then
3760
3761     enable local_aligned_8 local_aligned_16
3762
3763     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3764     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3765     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3766     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3767
3768     # AltiVec flags: The FSF version of GCC differs from the Apple version
3769     if enabled altivec; then
3770         nogas=warn
3771         check_cflags -maltivec -mabi=altivec &&
3772         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3773         check_cflags -faltivec
3774
3775         # check if our compiler supports Motorola AltiVec C API
3776         check_cc <<EOF || disable altivec
3777 $inc_altivec_h
3778 int main(void) {
3779     vector signed int v1 = (vector signed int) { 0 };
3780     vector signed int v2 = (vector signed int) { 1 };
3781     v1 = vec_add(v1, v2);
3782     return 0;
3783 }
3784 EOF
3785
3786         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3787     fi
3788
3789 elif enabled x86; then
3790
3791     check_builtin rdtsc    intrin.h   "__rdtsc()"
3792     check_builtin mm_empty mmintrin.h "_mm_empty()"
3793
3794     enable local_aligned_8 local_aligned_16
3795
3796     # check whether EBP is available on x86
3797     # As 'i' is stored on the stack, this program will crash
3798     # if the base pointer is used to access it because the
3799     # base pointer is cleared in the inline assembly code.
3800     check_exec_crash <<EOF && enable ebp_available
3801 volatile int i=0;
3802 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3803 return i;
3804 EOF
3805
3806     # check whether EBX is available on x86
3807     check_inline_asm ebx_available '""::"b"(0)' &&
3808         check_inline_asm ebx_available '"":::"%ebx"'
3809
3810     # check whether xmm clobbers are supported
3811     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3812
3813     # check whether binutils is new enough to compile SSSE3/MMXEXT
3814     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3815     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3816
3817     if ! disabled_any asm mmx yasm; then
3818         if check_cmd $yasmexe --version; then
3819             enabled x86_64 && yasm_extra="-m amd64"
3820             yasm_debug="-g dwarf2"
3821         elif check_cmd nasm -v; then
3822             yasmexe=nasm
3823             yasm_debug="-g -F dwarf"
3824             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3825         fi
3826
3827         YASMFLAGS="-f $objformat $yasm_extra"
3828         enabled pic               && append YASMFLAGS "-DPIC"
3829         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3830         case "$objformat" in
3831             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3832         esac
3833
3834         check_yasm "movbe ecx, [5]" && enable yasm ||
3835             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3836         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
3837         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
3838         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3839         check_yasm "CPU amdnop" || disable cpunop
3840     fi
3841
3842     case "$cpu" in
3843         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3844             disable fast_clz
3845         ;;
3846     esac
3847
3848 fi
3849
3850 if enabled asm; then
3851     as=${gas:=$as}
3852     check_as <<EOF && enable gnu_as || \
3853         $nogas "GNU assembler not found, install gas-preprocessor"
3854 .macro m n
3855 \n: .int 0
3856 .endm
3857 m x
3858 EOF
3859 fi
3860
3861 check_ldflags -Wl,--as-needed
3862
3863 if check_func dlopen; then
3864     ldl=
3865 elif check_func dlopen -ldl; then
3866     ldl=-ldl
3867 fi
3868
3869 if ! disabled network; then
3870     check_func getaddrinfo $network_extralibs
3871     check_func getservbyport $network_extralibs
3872     check_func inet_aton $network_extralibs
3873
3874     check_type netdb.h "struct addrinfo"
3875     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3876     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3877     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3878     check_type poll.h "struct pollfd"
3879     check_type netinet/sctp.h "struct sctp_event_subscribe"
3880     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3881     check_type netinet/in.h "struct sockaddr_in6"
3882     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3883     check_type "sys/types.h sys/socket.h" socklen_t
3884
3885     # Prefer arpa/inet.h over winsock2
3886     if check_header arpa/inet.h ; then
3887         check_func closesocket
3888     elif check_header winsock2.h ; then
3889         check_func_headers winsock2.h closesocket -lws2 &&
3890             network_extralibs="-lws2" ||
3891         { check_func_headers winsock2.h closesocket -lws2_32 &&
3892             network_extralibs="-lws2_32"; } || disable winsock2_h network
3893         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3894
3895         check_type ws2tcpip.h socklen_t
3896         check_type ws2tcpip.h "struct addrinfo"
3897         check_type ws2tcpip.h "struct group_source_req"
3898         check_type ws2tcpip.h "struct ip_mreq_source"
3899         check_type ws2tcpip.h "struct ipv6_mreq"
3900         check_type winsock2.h "struct pollfd"
3901         check_struct winsock2.h "struct sockaddr" sa_len
3902         check_type ws2tcpip.h "struct sockaddr_in6"
3903         check_type ws2tcpip.h "struct sockaddr_storage"
3904     else
3905         disable network
3906     fi
3907 fi
3908
3909 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3910 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3911 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3912 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3913
3914 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3915 check_func  ${malloc_prefix}memalign            && enable memalign
3916 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3917
3918 check_func  fcntl
3919 check_func  fork
3920 check_func  gethrtime
3921 check_func  getopt
3922 check_func  getrusage
3923 check_func  gettimeofday
3924 check_func  isatty
3925 check_func  localtime_r
3926 check_func  mach_absolute_time
3927 check_func  mkstemp
3928 check_func  mmap
3929 check_func  mprotect
3930 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3931 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3932 check_func  sched_getaffinity
3933 check_func  setrlimit
3934 check_func  strerror_r
3935 check_func  strptime
3936 check_func  sysconf
3937 check_func  sysctl
3938 check_func  usleep
3939
3940 check_func_headers io.h setmode
3941 check_func_headers stdlib.h getenv
3942
3943 check_func_headers windows.h GetProcessAffinityMask
3944 check_func_headers windows.h GetProcessTimes
3945 check_func_headers windows.h GetSystemTimeAsFileTime
3946 check_func_headers windows.h MapViewOfFile
3947 check_func_headers windows.h SetConsoleTextAttribute
3948 check_func_headers windows.h Sleep
3949 check_func_headers windows.h VirtualAlloc
3950
3951 check_header direct.h
3952 check_header dlfcn.h
3953 check_header dxva.h
3954 check_header dxva2api.h
3955 check_header io.h
3956 check_header mach/mach_time.h
3957 check_header malloc.h
3958 check_header poll.h
3959 check_header sys/mman.h
3960 check_header sys/param.h
3961 check_header sys/resource.h
3962 check_header sys/select.h
3963 check_header sys/time.h
3964 check_header sys/un.h
3965 check_header unistd.h
3966 check_header vdpau/vdpau.h
3967 check_header vdpau/vdpau_x11.h
3968 check_header VideoDecodeAcceleration/VDADecoder.h
3969 check_header windows.h
3970 check_header X11/extensions/XvMClib.h
3971
3972 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3973 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3974 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3975
3976 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3977
3978 if ! disabled w32threads && ! enabled pthreads; then
3979     check_func_headers "windows.h process.h" _beginthreadex &&
3980         enable w32threads || disable w32threads
3981 fi
3982
3983 # check for some common methods of building with pthread support
3984 # do this before the optional library checks as some of them require pthreads
3985 if ! disabled pthreads && ! enabled w32threads; then
3986     enable pthreads
3987     if check_func pthread_join -pthread; then
3988         add_cflags -pthread
3989         add_extralibs -pthread
3990     elif check_func pthread_join -pthreads; then
3991         add_cflags -pthreads
3992         add_extralibs -pthreads
3993     elif check_func pthread_join -lpthreadGC2; then
3994         add_extralibs -lpthreadGC2
3995     elif check_lib pthread.h pthread_join -lpthread; then
3996         :
3997     elif ! check_func pthread_join; then
3998         disable pthreads
3999     fi
4000 fi
4001
4002 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4003 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4004
4005 check_lib math.h sin -lm && LIBM="-lm"
4006 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4007
4008 atan2f_args=2
4009 ldexpf_args=2
4010 powf_args=2
4011
4012 for func in $MATH_FUNCS; do
4013     eval check_mathfunc $func \${${func}_args:-1}
4014 done
4015
4016 # these are off by default, so fail if requested and not available
4017 enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
4018                                { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
4019                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4020 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4021 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4022 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4023 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4024 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4025 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4026                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4027                                done || die "ERROR: libgsm not found"; }
4028 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4029 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4030 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4031 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4032 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4033 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4034                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4035 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4036 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4037 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4038 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4039 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4040 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4041 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4042 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4043 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4044 enabled libvpx            && {
4045     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4046                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4047     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
4048                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
4049     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4050     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4051 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4052 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4053 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4054                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4055                                die "ERROR: libx264 version must be >= 0.118."; }
4056 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4057                              { check_cpp_condition x265.h "X265_BUILD >= 13" ||
4058                                die "ERROR: libx265 version must be >= 13."; }
4059 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4060 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4061 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4062                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4063                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4064                                die "ERROR: openssl not found"; }
4065
4066 if enabled gnutls; then
4067     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4068     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4069 fi
4070
4071 # libdc1394 check
4072 if enabled libdc1394; then
4073     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4074         enable libdc1394_2; } ||
4075     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4076         enable libdc1394_1; } ||
4077     die "ERROR: No version of libdc1394 found "
4078 fi
4079
4080 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4081     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4082     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4083     enable sdl
4084 fi
4085
4086 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4087 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4088
4089 check_header linux/fb.h
4090 check_header linux/videodev2.h
4091 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4092
4093 check_header sys/videoio.h
4094
4095 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4096 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4097 # w32api 3.12 had it defined wrong
4098 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4099
4100 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4101 { check_header dev/bktr/ioctl_meteor.h &&
4102   check_header dev/bktr/ioctl_bt848.h; } ||
4103 { check_header machine/ioctl_meteor.h &&
4104   check_header machine/ioctl_bt848.h; } ||
4105 { check_header dev/video/meteor/ioctl_meteor.h &&
4106   check_header dev/video/bktr/ioctl_bt848.h; } ||
4107 check_header dev/ic/bt8xx.h
4108
4109 check_header sndio.h
4110 check_header sys/soundcard.h
4111 check_header soundcard.h
4112
4113 enabled_any alsa_indev alsa_outdev &&
4114     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4115
4116 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4117     check_func jack_port_get_latency_range -ljack
4118
4119 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4120
4121 if enabled libcdio; then
4122     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4123     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
4124 fi
4125
4126 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4127
4128 enabled x11grab                                           &&
4129 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4130 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4131 { enabled xlib || die "ERROR: Xlib not found"; }
4132
4133 enabled vdpau &&
4134     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4135     disable vdpau
4136
4137 enabled vdpau && enabled xlib &&
4138     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4139     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4140     enable vdpau_x11
4141
4142 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4143
4144 # add some useful compiler flags if supported
4145 check_cflags -Wdeclaration-after-statement
4146 check_cflags -Wall
4147 check_cflags -Wdisabled-optimization
4148 check_cflags -Wpointer-arith
4149 check_cflags -Wredundant-decls
4150 check_cflags -Wcast-qual
4151 check_cflags -Wwrite-strings
4152 check_cflags -Wtype-limits
4153 check_cflags -Wundef
4154 check_cflags -Wmissing-prototypes
4155 check_cflags -Wstrict-prototypes
4156 enabled extra_warnings && check_cflags -Winline
4157
4158 check_disable_warning(){
4159     warning_flag=-W${1#-Wno-}
4160     test_cflags $warning_flag && add_cflags $1
4161 }
4162
4163 check_disable_warning -Wno-parentheses
4164 check_disable_warning -Wno-switch
4165 check_disable_warning -Wno-format-zero-length
4166 check_disable_warning -Wno-pointer-sign
4167
4168 # add some linker flags
4169 check_ldflags -Wl,--warn-common
4170 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4171 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4172
4173 # add some strip flags
4174 # -wN '..@*' is more selective than -x, but not available everywhere.
4175 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4176
4177 enabled neon_clobber_test &&
4178     check_ldflags -Wl,--wrap,avcodec_open2              \
4179                   -Wl,--wrap,avcodec_decode_audio4      \
4180                   -Wl,--wrap,avcodec_decode_video2      \
4181                   -Wl,--wrap,avcodec_decode_subtitle2   \
4182                   -Wl,--wrap,avcodec_encode_audio2      \
4183                   -Wl,--wrap,avcodec_encode_video2      \
4184                   -Wl,--wrap,avcodec_encode_subtitle    \
4185                   -Wl,--wrap,avresample_convert ||
4186     disable neon_clobber_test
4187
4188 enabled xmm_clobber_test &&
4189     check_ldflags -Wl,--wrap,avcodec_open2              \
4190                   -Wl,--wrap,avcodec_decode_audio4      \
4191                   -Wl,--wrap,avcodec_decode_video2      \
4192                   -Wl,--wrap,avcodec_decode_subtitle2   \
4193                   -Wl,--wrap,avcodec_encode_audio2      \
4194                   -Wl,--wrap,avcodec_encode_video2      \
4195                   -Wl,--wrap,avcodec_encode_subtitle    \
4196                   -Wl,--wrap,avresample_convert         \
4197                   -Wl,--wrap,sws_scale ||
4198     disable xmm_clobber_test
4199
4200 echo "X{};" > $TMPV
4201 if test_ldflags -Wl,--version-script,$TMPV; then
4202     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4203     check_cc <<EOF && enable symver_asm_label
4204 void ff_foo(void) __asm__ ("av_foo@VERSION");
4205 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4206 EOF
4207     check_cc <<EOF && enable symver_gnu_asm
4208 __asm__(".symver ff_foo,av_foo@VERSION");
4209 void ff_foo(void) {}
4210 EOF
4211 fi
4212
4213 if [ -z "$optflags" ]; then
4214     if enabled small; then
4215         optflags=$cflags_size
4216     elif enabled optimizations; then
4217         optflags=$cflags_speed
4218     else
4219         optflags=$cflags_noopt
4220     fi
4221 fi
4222
4223 check_optflags(){
4224     check_cflags "$@"
4225     enabled lto && check_ldflags "$@"
4226 }
4227
4228
4229 if enabled lto; then
4230     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4231     check_cflags  -flto
4232     check_ldflags -flto $cpuflags
4233 fi
4234
4235 check_optflags $optflags
4236 check_optflags -fno-math-errno
4237 check_optflags -fno-signed-zeros
4238
4239 if enabled icc; then
4240     # Just warnings, no remarks
4241     check_cflags -w1
4242     # -wd: Disable following warnings
4243     # 144, 167, 556: -Wno-pointer-sign
4244     # 1292: attribute "foo" ignored
4245     # 1419: external declaration in primary source file
4246     # 10006: ignoring unknown option -fno-signed-zeros
4247     # 10148: ignoring unknown option -Wno-parentheses
4248     # 10156: ignoring option '-W'; no argument required
4249     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4250     # 11030: Warning unknown option --as-needed
4251     # 10156: ignoring option '-export'; no argument required
4252     check_ldflags -wd10156,11030
4253     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4254     enable ebp_available
4255     if enabled x86_32; then
4256         icc_version=$($cc -dumpversion)
4257         test ${icc_version%%.*} -ge 11 &&
4258             check_cflags -falign-stack=maintain-16-byte ||
4259             disable aligned_stack
4260     fi
4261 elif enabled ccc; then
4262     # disable some annoying warnings
4263     add_cflags -msg_disable bitnotint
4264     add_cflags -msg_disable mixfuncvoid
4265     add_cflags -msg_disable nonstandcast
4266     add_cflags -msg_disable unsupieee
4267 elif enabled gcc; then
4268     check_optflags -fno-tree-vectorize
4269     check_cflags -Werror=implicit-function-declaration
4270     check_cflags -Werror=missing-prototypes
4271     check_cflags -Werror=return-type
4272     check_cflags -Werror=declaration-after-statement
4273     check_cflags -Werror=vla
4274     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4275 elif enabled llvm_gcc; then
4276     check_cflags -mllvm -stack-alignment=16
4277 elif enabled clang; then
4278     check_cflags -mllvm -stack-alignment=16
4279     check_cflags -Qunused-arguments
4280     check_cflags -Werror=implicit-function-declaration
4281     check_cflags -Werror=missing-prototypes
4282     check_cflags -Werror=return-type
4283 elif enabled cparser; then
4284     add_cflags -Wno-missing-variable-declarations
4285     add_cflags -Wno-empty-statement
4286 elif enabled armcc; then
4287     # 2523: use of inline assembler is deprecated
4288     add_cflags -W${armcc_opt},--diag_suppress=2523
4289     add_cflags -W${armcc_opt},--diag_suppress=1207
4290     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4291     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4292     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4293     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4294 elif enabled tms470; then
4295     add_cflags -pds=824 -pds=837
4296     disable inline_asm
4297 elif enabled pathscale; then
4298     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4299 elif enabled_any msvc icl; then
4300     enabled x86_32 && disable aligned_stack
4301     enabled_all x86_32 debug && add_cflags -Oy-
4302     enabled debug && add_ldflags -debug
4303     enable pragma_deprecated
4304     if enabled icl; then
4305         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4306         # (correctly) on icl 13.x.
4307         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4308             add_cflags -Qansi-alias
4309         # icl will pass the inline asm tests but inline asm is currently
4310         # not supported (build will fail)
4311         disable inline_asm
4312     fi
4313 fi
4314
4315 case $as_type in
4316     clang)
4317         add_asflags -Qunused-arguments
4318     ;;
4319 esac
4320
4321 case $ld_type in
4322     clang)
4323         check_ldflags -Qunused-arguments
4324     ;;
4325 esac
4326
4327 case $target_os in
4328     osf1)
4329         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4330     ;;
4331     plan9)
4332         add_cppflags -Dmain=plan9_main
4333     ;;
4334 esac
4335
4336 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4337
4338 check_deps $CONFIG_LIST       \
4339            $CONFIG_EXTRA      \
4340            $HAVE_LIST         \
4341            $ALL_COMPONENTS    \
4342
4343 ! enabled_any memalign posix_memalign aligned_malloc &&
4344     enabled_any $need_memalign && enable memalign_hack
4345
4346 for thread in $THREADS_LIST; do
4347     if enabled $thread; then
4348         test -n "$thread_type" &&
4349             die "ERROR: Only one thread type must be selected." ||
4350             thread_type="$thread"
4351     fi
4352 done
4353
4354 echo "install prefix            $prefix"
4355 echo "source path               $source_path"
4356 echo "C compiler                $cc"
4357 echo "C library                 $libc_type"
4358 if test "$host_cc" != "$cc"; then
4359     echo "host C compiler           $host_cc"
4360     echo "host C library            $host_libc_type"
4361 fi
4362 echo "ARCH                      $arch ($cpu)"
4363 if test "$build_suffix" != ""; then
4364     echo "build suffix              $build_suffix"
4365 fi
4366 if test "$extra_version" != ""; then
4367     echo "version string suffix     $extra_version"
4368 fi
4369 echo "big-endian                ${bigendian-no}"
4370 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4371 if enabled x86; then
4372     echo "${yasmexe}                      ${yasm-no}"
4373     echo "MMX enabled               ${mmx-no}"
4374     echo "MMXEXT enabled            ${mmxext-no}"
4375     echo "3DNow! enabled            ${amd3dnow-no}"
4376     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4377     echo "SSE enabled               ${sse-no}"
4378     echo "SSSE3 enabled             ${ssse3-no}"
4379     echo "AVX enabled               ${avx-no}"
4380     echo "XOP enabled               ${xop-no}"
4381     echo "FMA3 enabled              ${fma3-no}"
4382     echo "FMA4 enabled              ${fma4-no}"
4383     echo "i686 features enabled     ${i686-no}"
4384     echo "CMOV is fast              ${fast_cmov-no}"
4385     echo "EBX available             ${ebx_available-no}"
4386     echo "EBP available             ${ebp_available-no}"
4387 fi
4388 if enabled aarch64; then
4389     echo "NEON enabled              ${neon-no}"
4390     echo "VFP enabled               ${vfp-no}"
4391 fi
4392 if enabled arm; then
4393     echo "ARMv5TE enabled           ${armv5te-no}"
4394     echo "ARMv6 enabled             ${armv6-no}"
4395     echo "ARMv6T2 enabled           ${armv6t2-no}"
4396     echo "VFP enabled               ${vfp-no}"
4397     echo "NEON enabled              ${neon-no}"
4398 fi
4399 if enabled ppc; then
4400     echo "AltiVec enabled           ${altivec-no}"
4401     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4402     echo "dcbzl available           ${dcbzl-no}"
4403 fi
4404 echo "debug symbols             ${debug-no}"
4405 echo "optimize for size         ${small-no}"
4406 echo "optimizations             ${optimizations-no}"
4407 echo "static                    ${static-no}"
4408 echo "shared                    ${shared-no}"
4409 echo "new filter support        ${avfilter-no}"
4410 echo "network support           ${network-no}"
4411 echo "threading support         ${thread_type-no}"
4412 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4413 echo "SDL support               ${sdl-no}"
4414 test -n "$random_seed" &&
4415     echo "random seed               ${random_seed}"
4416 echo
4417
4418 echo "External libraries:"
4419 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4420 echo
4421
4422 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4423     echo "Enabled ${type}s:"
4424     eval list=\$$(toupper $type)_LIST
4425     print_enabled '_*' $list | print_3_columns
4426     echo
4427 done
4428
4429 license="LGPL version 2.1 or later"
4430 if enabled nonfree; then
4431     license="nonfree and unredistributable"
4432 elif enabled gplv3; then
4433     license="GPL version 3 or later"
4434 elif enabled lgplv3; then
4435     license="LGPL version 3 or later"
4436 elif enabled gpl; then
4437     license="GPL version 2 or later"
4438 fi
4439
4440 echo "License: $license"
4441
4442 echo "Creating config.mak and config.h..."
4443
4444 test -e Makefile || echo "include $source_path/Makefile" > Makefile
4445
4446 config_files="$TMPH config.mak"
4447
4448 cat > config.mak <<EOF
4449 # Automatically generated by configure - do not modify!
4450 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
4451 prefix=$prefix
4452 LIBDIR=\$(DESTDIR)$libdir
4453 SHLIBDIR=\$(DESTDIR)$shlibdir
4454 INCDIR=\$(DESTDIR)$incdir
4455 BINDIR=\$(DESTDIR)$bindir
4456 DATADIR=\$(DESTDIR)$datadir
4457 DOCDIR=\$(DESTDIR)$docdir
4458 MANDIR=\$(DESTDIR)$mandir
4459 SRC_PATH=$source_path
4460 CC_IDENT=$cc_ident
4461 ARCH=$arch
4462 CC=$cc
4463 AS=$as
4464 LD=$ld
4465 DEPCC=$dep_cc
4466 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4467 DEPAS=$as
4468 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4469 YASM=$yasmexe
4470 DEPYASM=$yasmexe
4471 AR=$ar
4472 ARFLAGS=$arflags
4473 AR_O=$ar_o
4474 RANLIB=$ranlib
4475 STRIP=$strip
4476 LN_S=$ln_s
4477 CPPFLAGS=$CPPFLAGS
4478 CFLAGS=$CFLAGS
4479 ASFLAGS=$ASFLAGS
4480 AS_C=$AS_C
4481 AS_O=$AS_O
4482 CC_C=$CC_C
4483 CC_E=$CC_E
4484 CC_O=$CC_O
4485 LD_O=$LD_O
4486 LD_LIB=$LD_LIB
4487 LD_PATH=$LD_PATH
4488 DLLTOOL=$dlltool
4489 LDFLAGS=$LDFLAGS
4490 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4491 STRIPFLAGS=$STRIPFLAGS
4492 YASMFLAGS=$YASMFLAGS
4493 BUILDSUF=$build_suffix
4494 FULLNAME=$FULLNAME
4495 LIBPREF=$LIBPREF
4496 LIBSUF=$LIBSUF
4497 LIBNAME=$LIBNAME
4498 SLIBPREF=$SLIBPREF
4499 SLIBSUF=$SLIBSUF
4500 EXESUF=$EXESUF
4501 EXTRA_VERSION=$extra_version
4502 CCDEP=$CCDEP
4503 CCDEP_FLAGS=$CCDEP_FLAGS
4504 ASDEP=$ASDEP
4505 ASDEP_FLAGS=$ASDEP_FLAGS
4506 CC_DEPFLAGS=$CC_DEPFLAGS
4507 AS_DEPFLAGS=$AS_DEPFLAGS
4508 HOSTCC=$host_cc
4509 HOSTLD=$host_ld
4510 HOSTCFLAGS=$host_cflags
4511 HOSTCPPFLAGS=$host_cppflags
4512 HOSTEXESUF=$HOSTEXESUF
4513 HOSTLDFLAGS=$host_ldflags
4514 HOSTLIBS=$host_libs
4515 DEPHOSTCC=$host_cc
4516 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4517 HOSTCCDEP=$HOSTCCDEP
4518 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4519 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4520 HOSTCC_C=$HOSTCC_C
4521 HOSTCC_O=$HOSTCC_O
4522 HOSTLD_O=$HOSTLD_O
4523 TARGET_EXEC=$target_exec $target_exec_args
4524 TARGET_PATH=$target_path
4525 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4526 CFLAGS-avplay=$sdl_cflags
4527 ZLIB=$($ldflags_filter -lz)
4528 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4529 EXTRALIBS=$extralibs
4530 COMPAT_OBJS=$compat_objs
4531 EXEOBJS=$exeobjs
4532 INSTALL=install
4533 LIBTARGET=${LIBTARGET}
4534 SLIBNAME=${SLIBNAME}
4535 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4536 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4537 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4538 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4539 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4540 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4541 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4542 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4543 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4544 EOF
4545
4546 get_version(){
4547     lcname=lib${1}
4548     name=$(toupper $lcname)
4549     file=$source_path/$lcname/version.h
4550     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4551     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4552     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4553     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4554     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4555 }
4556
4557 map 'get_version $v' $LIBRARY_LIST
4558
4559 print_program_libs(){
4560     eval "program_libs=\$${1}_libs"
4561     eval echo "LIBS-${1}=${program_libs}" >> config.mak
4562 }
4563
4564 map 'print_program_libs $v' $PROGRAM_LIST
4565
4566 cat > $TMPH <<EOF
4567 /* Automatically generated by configure - do not modify! */
4568 #ifndef LIBAV_CONFIG_H
4569 #define LIBAV_CONFIG_H
4570 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4571 #define LIBAV_LICENSE "$(c_escape $license)"
4572 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4573 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4574 #define restrict $_restrict
4575 #define EXTERN_PREFIX "${extern_prefix}"
4576 #define EXTERN_ASM ${extern_prefix}
4577 #define SLIBSUF "$SLIBSUF"
4578 EOF
4579
4580 test -n "$malloc_prefix" &&
4581     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4582
4583 if enabled yasm; then
4584     append config_files $TMPASM
4585     printf '' >$TMPASM
4586 fi
4587
4588 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4589
4590 print_config ARCH_   "$config_files" $ARCH_LIST
4591 print_config HAVE_   "$config_files" $HAVE_LIST
4592 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4593                                      $CONFIG_EXTRA      \
4594                                      $ALL_COMPONENTS    \
4595
4596 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4597
4598 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4599 cp_if_changed $TMPH config.h
4600 touch .config
4601
4602 enabled yasm && cp_if_changed $TMPASM config.asm
4603
4604 cat > $TMPH <<EOF
4605 /* Generated by ffconf */
4606 #ifndef AVUTIL_AVCONFIG_H
4607 #define AVUTIL_AVCONFIG_H
4608 EOF
4609
4610 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4611
4612 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4613
4614 cp_if_changed $TMPH libavutil/avconfig.h
4615
4616 test -n "$WARNINGS" && printf "\n$WARNINGS"
4617
4618 # build pkg-config files
4619
4620 pkgconfig_generate(){
4621     name=$1
4622     shortname=${name#lib}${build_suffix}
4623     comment=$2
4624     version=$3
4625     libs=$4
4626     requires=$5
4627     enabled ${name#lib} || return 0
4628     mkdir -p $name
4629     cat <<EOF > $name/$name.pc
4630 prefix=$prefix
4631 exec_prefix=\${prefix}
4632 libdir=$libdir
4633 includedir=$incdir
4634
4635 Name: $name
4636 Description: $comment
4637 Version: $version
4638 Requires: $(enabled shared || echo $requires)
4639 Requires.private: $(enabled shared && echo $requires)
4640 Conflicts:
4641 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4642 Libs.private: $(enabled shared && echo $libs)
4643 Cflags: -I\${includedir}
4644 EOF
4645     cat <<EOF > $name/$name-uninstalled.pc
4646 prefix=
4647 exec_prefix=
4648 libdir=\${pcfiledir}
4649 includedir=${source_path}
4650
4651 Name: $name
4652 Description: $comment
4653 Version: $version
4654 Requires: $requires
4655 Conflicts:
4656 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4657 Cflags: -I\${includedir}
4658 EOF
4659 }
4660
4661 lavfi_libs="libavutil = $LIBAVUTIL_VERSION"
4662 enabled movie_filter    && prepend lavfi_libs "libavformat >= $LIBAVFORMAT_VERSION, libavcodec >= $LIBAVCODEC_VERSION,"
4663 enabled resample_filter && prepend lavfi_libs "libavresample >= $LIBAVRESAMPLE_VERSION,"
4664 enabled scale_filter    && prepend lavfi_libs "libswscale >= $LIBSWSCALE_VERSION,"
4665
4666 pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBM"
4667 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4668 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
4669 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
4670 pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs" "$lavfi_libs"
4671 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4672 pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"      "libavutil = $LIBAVUTIL_VERSION"