configure: Handle armcc 5.0
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89
90 Licensing options:
91   --enable-gpl             allow use of GPL code, the resulting libs
92                            and binaries will be under GPL [no]
93   --enable-version3        upgrade (L)GPL to version 3 [no]
94   --enable-nonfree         allow use of nonfree code, the resulting libs
95                            and binaries will be unredistributable [no]
96
97 Configuration options:
98   --disable-static         do not build static libraries [no]
99   --enable-shared          build shared libraries [no]
100   --enable-small           optimize for size instead of speed
101   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
102   --enable-gray            enable full grayscale support (slower color)
103   --disable-swscale-alpha  disable alpha channel support in swscale
104   --disable-all            disable building components, libraries and programs
105
106 Program options:
107   --disable-programs       do not build command line programs
108   --disable-avconv         disable avconv build
109   --disable-avplay         disable avplay build
110   --disable-avprobe        disable avprobe build
111   --disable-avserver       disable avserver build
112
113 Component options:
114   --disable-doc            do not build documentation
115   --disable-avdevice       disable libavdevice build
116   --disable-avcodec        disable libavcodec build
117   --disable-avformat       disable libavformat build
118   --disable-avutil         disable libavutil build
119   --disable-swscale        disable libswscale build
120   --disable-avfilter       disable video filter support [no]
121   --disable-avresample     disable libavresample build [no]
122   --disable-pthreads       disable pthreads [auto]
123   --disable-w32threads     disable Win32 threads [auto]
124   --disable-network        disable network support [no]
125   --disable-dct            disable DCT code
126   --disable-error-resilience disable error resilience code
127   --disable-lsp            disable LSP code
128   --disable-lzo            disable LZO decoder code
129   --disable-mdct           disable MDCT code
130   --disable-rdft           disable RDFT code
131   --disable-fft            disable FFT code
132
133 Hardware accelerators:
134   --enable-dxva2           enable DXVA2 code
135   --enable-vaapi           enable VAAPI code
136   --enable-vda             enable VDA code
137   --enable-vdpau           enable VDPAU code
138
139 Individual component options:
140   --disable-everything     disable all components listed below
141   --disable-encoder=NAME   disable encoder NAME
142   --enable-encoder=NAME    enable encoder NAME
143   --disable-encoders       disable all encoders
144   --disable-decoder=NAME   disable decoder NAME
145   --enable-decoder=NAME    enable decoder NAME
146   --disable-decoders       disable all decoders
147   --disable-hwaccel=NAME   disable hwaccel NAME
148   --enable-hwaccel=NAME    enable hwaccel NAME
149   --disable-hwaccels       disable all hwaccels
150   --disable-muxer=NAME     disable muxer NAME
151   --enable-muxer=NAME      enable muxer NAME
152   --disable-muxers         disable all muxers
153   --disable-demuxer=NAME   disable demuxer NAME
154   --enable-demuxer=NAME    enable demuxer NAME
155   --disable-demuxers       disable all demuxers
156   --enable-parser=NAME     enable parser NAME
157   --disable-parser=NAME    disable parser NAME
158   --disable-parsers        disable all parsers
159   --enable-bsf=NAME        enable bitstream filter NAME
160   --disable-bsf=NAME       disable bitstream filter NAME
161   --disable-bsfs           disable all bitstream filters
162   --enable-protocol=NAME   enable protocol NAME
163   --disable-protocol=NAME  disable protocol NAME
164   --disable-protocols      disable all protocols
165   --enable-indev=NAME      enable input device NAME
166   --disable-indev=NAME     disable input device NAME
167   --disable-indevs         disable input devices
168   --enable-outdev=NAME     enable output device NAME
169   --disable-outdev=NAME    disable output device NAME
170   --disable-outdevs        disable output devices
171   --disable-devices        disable all devices
172   --enable-filter=NAME     enable filter NAME
173   --disable-filter=NAME    disable filter NAME
174   --disable-filters        disable all filters
175
176 External library support:
177   --enable-avisynth        enable reading of AviSynth script files [no]
178   --enable-bzlib           enable bzlib [autodetect]
179   --enable-frei0r          enable frei0r video filtering
180   --enable-gnutls          enable gnutls [no]
181   --enable-libcdio         enable audio CD grabbing with libcdio
182   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
183                            and libraw1394 [no]
184   --enable-libfaac         enable AAC encoding via libfaac [no]
185   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
186   --enable-libfreetype     enable libfreetype [no]
187   --enable-libgsm          enable GSM de/encoding via libgsm [no]
188   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
189   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
190   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
191   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
192   --enable-libopencv       enable video filtering via libopencv [no]
193   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
194   --enable-libopus         enable Opus decoding via libopus [no]
195   --enable-libpulse        enable Pulseaudio input via libpulse [no]
196   --enable-librtmp         enable RTMP[E] support via librtmp [no]
197   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
198   --enable-libspeex        enable Speex de/encoding via libspeex [no]
199   --enable-libtheora       enable Theora encoding via libtheora [no]
200   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
201   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
202   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
203   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
204   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
205   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
206   --enable-libwebp         enable WebP encoding via libwebp [no]
207   --enable-libx264         enable H.264 encoding via x264 [no]
208   --enable-libx265         enable HEVC encoding via x265 [no]
209   --enable-libxavs         enable AVS encoding via xavs [no]
210   --enable-libxvid         enable Xvid encoding via xvidcore,
211                            native MPEG-4/Xvid encoder exists [no]
212   --enable-openssl         enable openssl [no]
213   --enable-x11grab         enable X11 grabbing [no]
214   --enable-zlib            enable zlib [autodetect]
215
216 Toolchain options:
217   --arch=ARCH              select architecture [$arch]
218   --cpu=CPU                select the minimum required CPU (affects
219                            instruction selection, may crash on older CPUs)
220   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
221   --enable-cross-compile   assume a cross-compiler is used
222   --sysroot=PATH           root of cross-build tree
223   --sysinclude=PATH        location of cross-build system headers
224   --target-os=OS           compiler targets OS [$target_os]
225   --target-exec=CMD        command to run executables on target
226   --target-path=DIR        path to view of build directory on target
227   --target-samples=DIR     path to samples directory on target
228   --toolchain=NAME         set tool defaults according to NAME
229   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
230   --nm=NM                  use nm tool
231   --ar=AR                  use archive tool AR [$ar_default]
232   --as=AS                  use assembler AS [$as_default]
233   --cc=CC                  use C compiler CC [$cc_default]
234   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
235   --ld=LD                  use linker LD
236   --pkg-config=PKGCONF     use pkg-config PKGCONF [$pkg_config_default]
237   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
238   --host-cc=HOSTCC         use host C compiler HOSTCC
239   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
240   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
241   --host-ld=HOSTLD         use host linker HOSTLD
242   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
243   --host-libs=HLIBS        use libs HLIBS when linking for host
244   --host-os=OS             compiler host OS [$target_os]
245   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
246   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
247   --extra-libs=ELIBS       add ELIBS [$ELIBS]
248   --extra-version=STRING   version string suffix []
249   --optflags=OPTFLAGS      override optimization-related compiler flags
250   --build-suffix=SUFFIX    library name suffix []
251   --enable-pic             build position-independent code
252   --enable-thumb           compile for Thumb instruction set
253   --enable-lto             use link-time optimization
254
255 Advanced options (experts only):
256   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
257   --disable-symver         disable symbol versioning
258   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
259   --disable-safe-bitstream-reader
260                            disable buffer boundary checking in bitreaders
261                            (faster, but may crash)
262   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
263   --enable-sram            allow use of on-chip SRAM
264
265 Optimization options (experts only):
266   --disable-asm            disable all assembler optimizations
267   --disable-altivec        disable AltiVec optimizations
268   --disable-amd3dnow       disable 3DNow! optimizations
269   --disable-amd3dnowext    disable 3DNow! extended optimizations
270   --disable-mmx            disable MMX optimizations
271   --disable-mmxext         disable MMXEXT optimizations
272   --disable-sse            disable SSE optimizations
273   --disable-sse2           disable SSE2 optimizations
274   --disable-sse3           disable SSE3 optimizations
275   --disable-ssse3          disable SSSE3 optimizations
276   --disable-sse4           disable SSE4 optimizations
277   --disable-sse42          disable SSE4.2 optimizations
278   --disable-avx            disable AVX optimizations
279   --disable-xop            disable XOP optimizations
280   --disable-fma3           disable FMA3 optimizations
281   --disable-fma4           disable FMA4 optimizations
282   --disable-avx2           disable AVX2 optimizations
283   --disable-armv5te        disable armv5te optimizations
284   --disable-armv6          disable armv6 optimizations
285   --disable-armv6t2        disable armv6t2 optimizations
286   --disable-vfp            disable VFP optimizations
287   --disable-neon           disable NEON optimizations
288   --disable-inline-asm     disable use of inline assembler
289   --disable-yasm           disable use of yasm assembler
290
291 Developer options (useful when working on Libav itself):
292   --disable-debug          disable debugging symbols
293   --enable-debug=LEVEL     set the debug level [$debuglevel]
294   --disable-optimizations  disable compiler optimizations
295   --enable-extra-warnings  enable more compiler warnings
296   --samples=PATH           location of test samples for FATE, if not set use
297                            \$LIBAV_SAMPLES at make invocation time.
298   --enable-neon-clobber-test check NEON registers for clobbering (should be
299                            used only for debugging purposes)
300   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
301                            should be used only for debugging purposes)
302   --enable-random          randomly enable/disable components
303   --disable-random
304   --enable-random=LIST     randomly enable/disable specific components or
305   --disable-random=LIST    component groups. LIST is a comma-separated list
306                            of NAME[:PROB] entries where NAME is a component
307                            (group) and PROB the probability associated with
308                            NAME (default 0.5).
309   --random-seed=VALUE      seed value for --enable/disable-random
310
311 NOTE: Object files are built at the place where configure is launched.
312 EOF
313   exit 0
314 }
315
316 quotes='""'
317
318 log(){
319     echo "$@" >> $logfile
320 }
321
322 log_file(){
323     log BEGIN $1
324     pr -n -t $1 >> $logfile
325     log END $1
326 }
327
328 echolog(){
329     log "$@"
330     echo "$@"
331 }
332
333 warn(){
334     log "WARNING: $*"
335     WARNINGS="${WARNINGS}WARNING: $*\n"
336 }
337
338 die(){
339     echolog "$@"
340     cat <<EOF
341
342 If you think configure made a mistake, make sure you are using the latest
343 version from Git.  If the latest version fails, report the problem to the
344 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
345 EOF
346     if disabled logging; then
347         cat <<EOF
348 Rerun configure with logging enabled (do not use --disable-logging), and
349 include the log this produces with your report.
350 EOF
351     else
352         cat <<EOF
353 Include the log file "$logfile" produced by configure as this will help
354 solving the problem.
355 EOF
356     fi
357     exit 1
358 }
359
360 # Avoid locale weirdness, besides we really just want to translate ASCII.
361 toupper(){
362     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
363 }
364
365 tolower(){
366     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
367 }
368
369 c_escape(){
370     echo "$*" | sed 's/["\\]/\\\0/g'
371 }
372
373 sh_quote(){
374     v=$(echo "$1" | sed "s/'/'\\\\''/g")
375     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
376     echo "$v"
377 }
378
379 cleanws(){
380     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
381 }
382
383 filter(){
384     pat=$1
385     shift
386     for v; do
387         eval "case $v in $pat) echo $v ;; esac"
388     done
389 }
390
391 filter_out(){
392     pat=$1
393     shift
394     for v; do
395         eval "case $v in $pat) ;; *) echo $v ;; esac"
396     done
397 }
398
399 map(){
400     m=$1
401     shift
402     for v; do eval $m; done
403 }
404
405 add_suffix(){
406     suffix=$1
407     shift
408     for v; do echo ${v}${suffix}; done
409 }
410
411 set_all(){
412     value=$1
413     shift
414     for var in $*; do
415         eval $var=$value
416     done
417 }
418
419 set_weak(){
420     value=$1
421     shift
422     for var; do
423         eval : \${$var:=$value}
424     done
425 }
426
427 sanitize_var_name(){
428     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
429 }
430
431 set_safe(){
432     var=$1
433     shift
434     eval $(sanitize_var_name "$var")='$*'
435 }
436
437 get_safe(){
438     eval echo \$$(sanitize_var_name "$1")
439 }
440
441 pushvar(){
442     for pvar in $*; do
443         eval level=\${${pvar}_level:=0}
444         eval ${pvar}_${level}="\$$pvar"
445         eval ${pvar}_level=$(($level+1))
446     done
447 }
448
449 popvar(){
450     for pvar in $*; do
451         eval level=\${${pvar}_level:-0}
452         test $level = 0 && continue
453         eval level=$(($level-1))
454         eval $pvar="\${${pvar}_${level}}"
455         eval ${pvar}_level=$level
456         eval unset ${pvar}_${level}
457     done
458 }
459
460 enable(){
461     set_all yes $*
462 }
463
464 disable(){
465     set_all no $*
466 }
467
468 enable_weak(){
469     set_weak yes $*
470 }
471
472 disable_weak(){
473     set_weak no $*
474 }
475
476 enable_safe(){
477     for var; do
478         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
479     done
480 }
481
482 disable_safe(){
483     for var; do
484         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
485     done
486 }
487
488 do_enable_deep(){
489     for var; do
490         enabled $var && continue
491         eval sel="\$${var}_select"
492         eval sgs="\$${var}_suggest"
493         pushvar var sgs
494         enable_deep $sel
495         popvar sgs
496         enable_deep_weak $sgs
497         popvar var
498     done
499 }
500
501 enable_deep(){
502     do_enable_deep $*
503     enable $*
504 }
505
506 enable_deep_weak(){
507     for var; do
508         disabled $var && continue
509         pushvar var
510         do_enable_deep $var
511         popvar var
512         enable_weak $var
513     done
514 }
515
516 enabled(){
517     test "${1#!}" = "$1" && op== || op=!=
518     eval test "x\$${1#!}" $op "xyes"
519 }
520
521 disabled(){
522     test "${1#!}" = "$1" && op== || op=!=
523     eval test "x\$${1#!}" $op "xno"
524 }
525
526 enabled_all(){
527     for opt; do
528         enabled $opt || return 1
529     done
530 }
531
532 disabled_all(){
533     for opt; do
534         disabled $opt || return 1
535     done
536 }
537
538 enabled_any(){
539     for opt; do
540         enabled $opt && return 0
541     done
542 }
543
544 disabled_any(){
545     for opt; do
546         disabled $opt && return 0
547     done
548     return 1
549 }
550
551 set_default(){
552     for opt; do
553         eval : \${$opt:=\$${opt}_default}
554     done
555 }
556
557 is_in(){
558     value=$1
559     shift
560     for var in $*; do
561         [ $var = $value ] && return 0
562     done
563     return 1
564 }
565
566 do_check_deps(){
567     for cfg; do
568         cfg="${cfg#!}"
569         enabled ${cfg}_checking && die "Circular dependency for $cfg."
570         disabled ${cfg}_checking && continue
571         enable ${cfg}_checking
572         append allopts $cfg
573
574         eval dep_all="\$${cfg}_deps"
575         eval dep_any="\$${cfg}_deps_any"
576         eval dep_sel="\$${cfg}_select"
577         eval dep_sgs="\$${cfg}_suggest"
578         eval dep_ifa="\$${cfg}_if"
579         eval dep_ifn="\$${cfg}_if_any"
580
581         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
582         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
583         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
584
585         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
586         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
587         enabled_all  $dep_all || disable $cfg
588         enabled_any  $dep_any || disable $cfg
589         disabled_any $dep_sel && disable $cfg
590
591         if enabled $cfg; then
592             enable_deep $dep_sel
593             enable_deep_weak $dep_sgs
594         fi
595
596         disable ${cfg}_checking
597     done
598 }
599
600 check_deps(){
601     unset allopts
602
603     do_check_deps "$@"
604
605     for cfg in $allopts; do
606         enabled $cfg || continue
607         eval dep_extralibs="\$${cfg}_extralibs"
608         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
609     done
610 }
611
612 print_config(){
613     pfx=$1
614     files=$2
615     shift 2
616     map 'eval echo "$v \${$v:-no}"' "$@" |
617     awk "BEGIN { split(\"$files\", files) }
618         {
619             c = \"$pfx\" toupper(\$1);
620             v = \$2;
621             sub(/yes/, 1, v);
622             sub(/no/,  0, v);
623             for (f in files) {
624                 file = files[f];
625                 if (file ~ /\\.h\$/) {
626                     printf(\"#define %s %d\\n\", c, v) >>file;
627                 } else if (file ~ /\\.asm\$/) {
628                     printf(\"%%define %s %d\\n\", c, v) >>file;
629                 } else if (file ~ /\\.mak\$/) {
630                     n = -v ? \"\" : \"!\";
631                     printf(\"%s%s=yes\\n\", n, c) >>file;
632                 }
633             }
634         }"
635 }
636
637 print_enabled(){
638     suf=$1
639     shift
640     for v; do
641         enabled $v && printf "%s\n" ${v%$suf};
642     done
643 }
644
645 append(){
646     var=$1
647     shift
648     eval "$var=\"\$$var $*\""
649 }
650
651 prepend(){
652     var=$1
653     shift
654     eval "$var=\"$* \$$var\""
655 }
656
657 add_cppflags(){
658     append CPPFLAGS "$@"
659 }
660
661 add_cflags(){
662     append CFLAGS $($cflags_filter "$@")
663 }
664
665 add_asflags(){
666     append ASFLAGS $($asflags_filter "$@")
667 }
668
669 add_ldflags(){
670     append LDFLAGS $($ldflags_filter "$@")
671 }
672
673 add_stripflags(){
674     append STRIPFLAGS "$@"
675 }
676
677 add_extralibs(){
678     prepend extralibs $($ldflags_filter "$@")
679 }
680
681 add_host_cppflags(){
682     append host_cppflags "$@"
683 }
684
685 add_host_cflags(){
686     append host_cflags $($host_cflags_filter "$@")
687 }
688
689 add_host_ldflags(){
690     append host_ldflags $($host_ldflags_filter "$@")
691 }
692
693 add_compat(){
694     append compat_objs $1
695     shift
696     map 'add_cppflags -D$v' "$@"
697 }
698
699 check_cmd(){
700     log "$@"
701     "$@" >> $logfile 2>&1
702 }
703
704 cc_o(){
705     eval printf '%s\\n' $CC_O
706 }
707
708 cc_e(){
709     eval printf '%s\\n' $CC_E
710 }
711
712 check_cc(){
713     log check_cc "$@"
714     cat > $TMPC
715     log_file $TMPC
716     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
717 }
718
719 check_cpp(){
720     log check_cpp "$@"
721     cat > $TMPC
722     log_file $TMPC
723     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
724 }
725
726 as_o(){
727     eval printf '%s\\n' $AS_O
728 }
729
730 check_as(){
731     log check_as "$@"
732     cat > $TMPS
733     log_file $TMPS
734     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
735 }
736
737 check_inline_asm(){
738     log check_inline_asm "$@"
739     name="$1"
740     code="$2"
741     shift 2
742     disable $name
743     check_cc "$@" <<EOF && enable $name
744 void foo(void){ __asm__ volatile($code); }
745 EOF
746 }
747
748 check_insn(){
749     log check_insn "$@"
750     check_inline_asm ${1}_inline "\"$2\""
751     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
752 }
753
754 check_yasm(){
755     log check_yasm "$@"
756     echo "$1" > $TMPS
757     log_file $TMPS
758     shift 1
759     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
760 }
761
762 ld_o(){
763     eval printf '%s\\n' $LD_O
764 }
765
766 check_ld(){
767     log check_ld "$@"
768     flags=$(filter_out '-l*' "$@")
769     libs=$(filter '-l*' "$@")
770     check_cc $($cflags_filter $flags) || return
771     flags=$($ldflags_filter $flags)
772     libs=$($ldflags_filter $libs)
773     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
774 }
775
776 print_include(){
777     hdr=$1
778     test "${hdr%.h}" = "${hdr}" &&
779         echo "#include $hdr"    ||
780         echo "#include <$hdr>"
781 }
782
783 check_code(){
784     log check_code "$@"
785     check=$1
786     headers=$2
787     code=$3
788     shift 3
789     {
790         for hdr in $headers; do
791             print_include $hdr
792         done
793         echo "int main(void) { $code; return 0; }"
794     } | check_$check "$@"
795 }
796
797 check_cppflags(){
798     log check_cppflags "$@"
799     check_cc "$@" <<EOF && append CPPFLAGS "$@"
800 int x;
801 EOF
802 }
803
804 test_cflags(){
805     log test_cflags "$@"
806     set -- $($cflags_filter "$@")
807     check_cc "$@" <<EOF
808 int x;
809 EOF
810 }
811
812 check_cflags(){
813     log check_cflags "$@"
814     test_cflags "$@" && add_cflags "$@"
815 }
816
817 test_ldflags(){
818     log test_ldflags "$@"
819     check_ld "$@" <<EOF
820 int main(void){ return 0; }
821 EOF
822 }
823
824 check_ldflags(){
825     log check_ldflags "$@"
826     test_ldflags "$@" && add_ldflags "$@"
827 }
828
829 test_stripflags(){
830     log test_stripflags "$@"
831     # call check_cc to get a fresh TMPO
832     check_cc <<EOF
833 int main(void) { return 0; }
834 EOF
835     check_cmd $strip $STRIPFLAGS "$@" $TMPO
836 }
837
838 check_stripflags(){
839     log check_stripflags "$@"
840     test_stripflags "$@" && add_stripflags "$@"
841 }
842
843 check_header(){
844     log check_header "$@"
845     header=$1
846     shift
847     disable_safe $header
848     check_cpp "$@" <<EOF && enable_safe $header
849 #include <$header>
850 int x;
851 EOF
852 }
853
854 check_func(){
855     log check_func "$@"
856     func=$1
857     shift
858     disable $func
859     check_ld "$@" <<EOF && enable $func
860 extern int $func();
861 int main(void){ $func(); }
862 EOF
863 }
864
865 check_mathfunc(){
866     log check_mathfunc "$@"
867     func=$1
868     narg=$2
869     shift 2
870     test $narg = 2 && args="f, g" || args="f"
871     disable $func
872     check_ld "$@" <<EOF && enable $func
873 #include <math.h>
874 float foo(float f, float g) { return $func($args); }
875 int main(void){ return 0; }
876 EOF
877 }
878
879 check_func_headers(){
880     log check_func_headers "$@"
881     headers=$1
882     funcs=$2
883     shift 2
884     {
885         for hdr in $headers; do
886             print_include $hdr
887         done
888         for func in $funcs; do
889             echo "long check_$func(void) { return (long) $func; }"
890         done
891         echo "int main(void) { return 0; }"
892     } | check_ld "$@" && enable $funcs && enable_safe $headers
893 }
894
895 check_cpp_condition(){
896     log check_cpp_condition "$@"
897     header=$1
898     condition=$2
899     shift 2
900     check_cpp "$@" <<EOF
901 #include <$header>
902 #if !($condition)
903 #error "unsatisfied condition: $condition"
904 #endif
905 EOF
906 }
907
908 check_lib(){
909     log check_lib "$@"
910     header="$1"
911     func="$2"
912     shift 2
913     check_header $header && check_func $func "$@" && add_extralibs "$@"
914 }
915
916 check_lib2(){
917     log check_lib2 "$@"
918     headers="$1"
919     funcs="$2"
920     shift 2
921     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
922 }
923
924 check_pkg_config(){
925     log check_pkg_config "$@"
926     pkg="$1"
927     headers="$2"
928     funcs="$3"
929     shift 3
930     check_cmd $pkg_config --exists --print-errors $pkg || return
931     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
932     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
933     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
934         set_safe ${pkg}_cflags $pkg_cflags   &&
935         set_safe ${pkg}_libs   $pkg_libs
936 }
937
938 check_exec(){
939     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
940 }
941
942 check_exec_crash(){
943     code=$(cat)
944
945     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
946     # are safe but may not be available everywhere.  Thus we use
947     # raise(SIGTERM) instead.  The check is run in a subshell so we
948     # can redirect the "Terminated" message from the shell.  SIGBUS
949     # is not defined by standard C so it is used conditionally.
950
951     (check_exec "$@") >> $logfile 2>&1 <<EOF
952 #include <signal.h>
953 static void sighandler(int sig){
954     raise(SIGTERM);
955 }
956 int foo(void){
957     $code
958 }
959 int (*func_ptr)(void) = foo;
960 int main(void){
961     signal(SIGILL, sighandler);
962     signal(SIGFPE, sighandler);
963     signal(SIGSEGV, sighandler);
964 #ifdef SIGBUS
965     signal(SIGBUS, sighandler);
966 #endif
967     return func_ptr();
968 }
969 EOF
970 }
971
972 check_type(){
973     log check_type "$@"
974     headers=$1
975     type=$2
976     shift 2
977     disable_safe "$type"
978     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
979 }
980
981 check_struct(){
982     log check_struct "$@"
983     headers=$1
984     struct=$2
985     member=$3
986     shift 3
987     disable_safe "${struct}_${member}"
988     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
989         enable_safe "${struct}_${member}"
990 }
991
992 check_builtin(){
993     log check_builtin "$@"
994     name=$1
995     headers=$2
996     builtin=$3
997     shift 3
998     disable "$name"
999     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1000 }
1001
1002 check_compile_assert(){
1003     log check_compile_assert "$@"
1004     name=$1
1005     headers=$2
1006     condition=$3
1007     shift 3
1008     disable "$name"
1009     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1010 }
1011
1012 require(){
1013     name="$1"
1014     header="$2"
1015     func="$3"
1016     shift 3
1017     check_lib $header $func "$@" || die "ERROR: $name not found"
1018 }
1019
1020 require2(){
1021     name="$1"
1022     headers="$2"
1023     func="$3"
1024     shift 3
1025     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1026 }
1027
1028 require_pkg_config(){
1029     pkg="$1"
1030     check_pkg_config "$@" || die "ERROR: $pkg not found"
1031     add_cflags    $(get_safe ${pkg}_cflags)
1032     add_extralibs $(get_safe ${pkg}_libs)
1033 }
1034
1035 hostcc_e(){
1036     eval printf '%s\\n' $HOSTCC_E
1037 }
1038
1039 hostcc_o(){
1040     eval printf '%s\\n' $HOSTCC_O
1041 }
1042
1043 check_host_cc(){
1044     log check_host_cc "$@"
1045     cat > $TMPC
1046     log_file $TMPC
1047     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1048 }
1049
1050 check_host_cpp(){
1051     log check_host_cpp "$@"
1052     cat > $TMPC
1053     log_file $TMPC
1054     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1055 }
1056
1057 check_host_cppflags(){
1058     log check_host_cppflags "$@"
1059     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1060 int x;
1061 EOF
1062 }
1063
1064 check_host_cflags(){
1065     log check_host_cflags "$@"
1066     set -- $($host_cflags_filter "$@")
1067     check_host_cc "$@" <<EOF && append host_cflags "$@"
1068 int x;
1069 EOF
1070 }
1071
1072 check_host_cpp_condition(){
1073     log check_host_cpp_condition "$@"
1074     header=$1
1075     condition=$2
1076     shift 2
1077     check_host_cpp "$@" <<EOF
1078 #include <$header>
1079 #if !($condition)
1080 #error "unsatisfied condition: $condition"
1081 #endif
1082 EOF
1083 }
1084
1085 apply(){
1086     file=$1
1087     shift
1088     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1089 }
1090
1091 cp_if_changed(){
1092     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1093     mkdir -p "$(dirname $2)"
1094     $cp_f "$1" "$2"
1095 }
1096
1097 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1098 # system-dependent things.
1099
1100 COMPONENT_LIST="
1101     bsfs
1102     decoders
1103     demuxers
1104     encoders
1105     filters
1106     hwaccels
1107     indevs
1108     muxers
1109     outdevs
1110     parsers
1111     protocols
1112 "
1113
1114 EXAMPLE_LIST="
1115     avcodec_example
1116     filter_audio_example
1117     metadata_example
1118     output_example
1119     transcode_aac_example
1120 "
1121
1122 EXTERNAL_LIBRARY_LIST="
1123     avisynth
1124     bzlib
1125     frei0r
1126     gnutls
1127     libcdio
1128     libdc1394
1129     libfaac
1130     libfdk_aac
1131     libfontconfig
1132     libfreetype
1133     libgsm
1134     libilbc
1135     libmp3lame
1136     libopencore_amrnb
1137     libopencore_amrwb
1138     libopencv
1139     libopenjpeg
1140     libopus
1141     libpulse
1142     librtmp
1143     libschroedinger
1144     libspeex
1145     libtheora
1146     libtwolame
1147     libvo_aacenc
1148     libvo_amrwbenc
1149     libvorbis
1150     libvpx
1151     libwavpack
1152     libwebp
1153     libx264
1154     libx265
1155     libxavs
1156     libxvid
1157     openssl
1158     x11grab
1159     zlib
1160 "
1161
1162 FEATURE_LIST="
1163     gray
1164     hardcoded_tables
1165     runtime_cpudetect
1166     safe_bitstream_reader
1167     shared
1168     small
1169     sram
1170     static
1171     swscale_alpha
1172 "
1173
1174 HWACCEL_LIST="
1175     dxva2
1176     vaapi
1177     vda
1178     vdpau
1179 "
1180
1181 LIBRARY_LIST="
1182     avcodec
1183     avdevice
1184     avfilter
1185     avformat
1186     avresample
1187     avutil
1188     swscale
1189 "
1190
1191 LICENSE_LIST="
1192     gpl
1193     nonfree
1194     version3
1195 "
1196
1197 PROGRAM_LIST="
1198     avconv
1199     avplay
1200     avprobe
1201     avserver
1202 "
1203
1204 SUBSYSTEM_LIST="
1205     dct
1206     doc
1207     error_resilience
1208     fft
1209     lsp
1210     lzo
1211     mdct
1212     network
1213     rdft
1214 "
1215
1216 CONFIG_LIST="
1217     $COMPONENT_LIST
1218     $EXAMPLE_LIST
1219     $EXTERNAL_LIBRARY_LIST
1220     $FEATURE_LIST
1221     $HWACCEL_LIST
1222     $LICENSE_LIST
1223     $LIBRARY_LIST
1224     $PROGRAM_LIST
1225     $SUBSYSTEM_LIST
1226     memalign_hack
1227     neon_clobber_test
1228     pic
1229     pod2man
1230     texi2html
1231     thumb
1232     xmm_clobber_test
1233 "
1234
1235 THREADS_LIST="
1236     pthreads
1237     w32threads
1238 "
1239
1240 ATOMICS_LIST="
1241     atomics_gcc
1242     atomics_suncc
1243     atomics_win32
1244 "
1245
1246 ARCH_LIST="
1247     aarch64
1248     alpha
1249     arm
1250     avr32
1251     avr32_ap
1252     avr32_uc
1253     bfin
1254     ia64
1255     m68k
1256     mips
1257     mips64
1258     parisc
1259     ppc
1260     ppc64
1261     s390
1262     sh4
1263     sparc
1264     sparc64
1265     tilegx
1266     tilepro
1267     tomi
1268     x86
1269     x86_32
1270     x86_64
1271 "
1272
1273 ARCH_EXT_LIST_ARM="
1274     armv5te
1275     armv6
1276     armv6t2
1277     armv8
1278     neon
1279     vfp
1280     vfpv3
1281 "
1282
1283 ARCH_EXT_LIST_X86_SIMD="
1284     amd3dnow
1285     amd3dnowext
1286     avx
1287     avx2
1288     fma3
1289     fma4
1290     mmx
1291     mmxext
1292     sse
1293     sse2
1294     sse3
1295     sse4
1296     sse42
1297     ssse3
1298     xop
1299 "
1300
1301 ARCH_EXT_LIST_PPC="
1302     altivec
1303     dcbzl
1304     ldbrx
1305     ppc4xx
1306 "
1307
1308 ARCH_EXT_LIST_X86="
1309     $ARCH_EXT_LIST_X86_SIMD
1310     cpunop
1311     i686
1312 "
1313
1314 ARCH_EXT_LIST="
1315     $ARCH_EXT_LIST_ARM
1316     $ARCH_EXT_LIST_PPC
1317     $ARCH_EXT_LIST_X86
1318     loongson
1319     vis
1320 "
1321
1322 ARCH_FEATURES="
1323     aligned_stack
1324     fast_64bit
1325     fast_clz
1326     fast_cmov
1327     local_aligned_8
1328     local_aligned_16
1329 "
1330
1331 BUILTIN_LIST="
1332     atomic_cas_ptr
1333     machine_rw_barrier
1334     MemoryBarrier
1335     mm_empty
1336     rdtsc
1337     sync_val_compare_and_swap
1338 "
1339 HAVE_LIST_CMDLINE="
1340     inline_asm
1341     symver
1342     yasm
1343 "
1344
1345 HAVE_LIST_PUB="
1346     bigendian
1347     fast_unaligned
1348 "
1349
1350 HEADERS_LIST="
1351     alsa_asoundlib_h
1352     altivec_h
1353     arpa_inet_h
1354     cdio_paranoia_h
1355     cdio_paranoia_paranoia_h
1356     dev_bktr_ioctl_bt848_h
1357     dev_bktr_ioctl_meteor_h
1358     dev_ic_bt8xx_h
1359     dev_video_bktr_ioctl_bt848_h
1360     dev_video_meteor_ioctl_meteor_h
1361     direct_h
1362     dlfcn_h
1363     dxva_h
1364     gsm_h
1365     io_h
1366     mach_mach_time_h
1367     machine_ioctl_bt848_h
1368     machine_ioctl_meteor_h
1369     malloc_h
1370     poll_h
1371     sndio_h
1372     soundcard_h
1373     sys_mman_h
1374     sys_param_h
1375     sys_resource_h
1376     sys_select_h
1377     sys_soundcard_h
1378     sys_time_h
1379     sys_un_h
1380     sys_videoio_h
1381     unistd_h
1382     windows_h
1383     winsock2_h
1384 "
1385
1386 MATH_FUNCS="
1387     atanf
1388     atan2f
1389     cbrtf
1390     cosf
1391     exp2
1392     exp2f
1393     expf
1394     isinf
1395     isnan
1396     ldexpf
1397     llrint
1398     llrintf
1399     log2
1400     log2f
1401     log10f
1402     lrint
1403     lrintf
1404     powf
1405     rint
1406     round
1407     roundf
1408     sinf
1409     trunc
1410     truncf
1411 "
1412
1413 SYSTEM_FUNCS="
1414     aligned_malloc
1415     closesocket
1416     CommandLineToArgvW
1417     CryptGenRandom
1418     dlopen
1419     fcntl
1420     flt_lim
1421     fork
1422     getaddrinfo
1423     gethrtime
1424     getopt
1425     GetProcessAffinityMask
1426     GetProcessMemoryInfo
1427     GetProcessTimes
1428     getrusage
1429     getservbyport
1430     GetSystemTimeAsFileTime
1431     gettimeofday
1432     inet_aton
1433     isatty
1434     jack_port_get_latency_range
1435     localtime_r
1436     mach_absolute_time
1437     MapViewOfFile
1438     memalign
1439     mkstemp
1440     mmap
1441     mprotect
1442     nanosleep
1443     posix_memalign
1444     sched_getaffinity
1445     SetConsoleTextAttribute
1446     setmode
1447     setrlimit
1448     Sleep
1449     strerror_r
1450     strptime
1451     sysconf
1452     sysctl
1453     usleep
1454     VirtualAlloc
1455 "
1456
1457 TOOLCHAIN_FEATURES="
1458     asm_mod_q
1459     attribute_may_alias
1460     attribute_packed
1461     ebp_available
1462     ebx_available
1463     gnu_as
1464     ibm_asm
1465     inline_asm_labels
1466     pragma_deprecated
1467     symver_asm_label
1468     symver_gnu_asm
1469     vfp_args
1470     xform_asm
1471     xmm_clobbers
1472 "
1473
1474 TYPES_LIST="
1475     socklen_t
1476     struct_addrinfo
1477     struct_group_source_req
1478     struct_ip_mreq_source
1479     struct_ipv6_mreq
1480     struct_pollfd
1481     struct_rusage_ru_maxrss
1482     struct_sockaddr_in6
1483     struct_sockaddr_sa_len
1484     struct_sockaddr_storage
1485     struct_v4l2_frmivalenum_discrete
1486 "
1487
1488 HAVE_LIST="
1489     $ARCH_EXT_LIST
1490     $(add_suffix _external $ARCH_EXT_LIST)
1491     $(add_suffix _inline   $ARCH_EXT_LIST)
1492     $ARCH_FEATURES
1493     $ATOMICS_LIST
1494     $BUILTIN_LIST
1495     $HAVE_LIST_CMDLINE
1496     $HAVE_LIST_PUB
1497     $HEADERS_LIST
1498     $MATH_FUNCS
1499     $SYSTEM_FUNCS
1500     $THREADS_LIST
1501     $TOOLCHAIN_FEATURES
1502     $TYPES_LIST
1503     atomics_native
1504     dos_paths
1505     libc_msvcrt
1506     libdc1394_1
1507     libdc1394_2
1508     sdl
1509     threads
1510     vdpau_x11
1511     xlib
1512 "
1513
1514 # options emitted with CONFIG_ prefix but not available on the command line
1515 CONFIG_EXTRA="
1516     aandcttables
1517     ac3dsp
1518     audio_frame_queue
1519     cabac
1520     dsputil
1521     gcrypt
1522     golomb
1523     gplv3
1524     h263dsp
1525     h264chroma
1526     h264dsp
1527     h264pred
1528     h264qpel
1529     hpeldsp
1530     huffman
1531     intrax8
1532     lgplv3
1533     lpc
1534     mpegaudio
1535     mpegaudiodsp
1536     mpegvideo
1537     mpegvideoenc
1538     nettle
1539     rangecoder
1540     riffdec
1541     riffenc
1542     rtpdec
1543     rtpenc_chain
1544     sinewin
1545     tpeldsp
1546     videodsp
1547     vp3dsp
1548 "
1549
1550 CMDLINE_SELECT="
1551     $ARCH_EXT_LIST
1552     $CONFIG_LIST
1553     $HAVE_LIST_CMDLINE
1554     $THREADS_LIST
1555     asm
1556     cross_compile
1557     debug
1558     extra_warnings
1559     logging
1560     lto
1561     optimizations
1562 "
1563
1564 PATHS_LIST="
1565     bindir
1566     datadir
1567     docdir
1568     incdir
1569     libdir
1570     mandir
1571     prefix
1572     shlibdir
1573 "
1574
1575 CMDLINE_SET="
1576     $PATHS_LIST
1577     ar
1578     arch
1579     as
1580     build_suffix
1581     cc
1582     cpu
1583     cross_prefix
1584     dep_cc
1585     extra_version
1586     host_cc
1587     host_cflags
1588     host_ld
1589     host_ldflags
1590     host_libs
1591     host_os
1592     ld
1593     logfile
1594     malloc_prefix
1595     nm
1596     optflags
1597     pkg_config
1598     pkg_config_flags
1599     random_seed
1600     samples
1601     sysinclude
1602     sysroot
1603     target_exec
1604     target_os
1605     target_path
1606     target_samples
1607     toolchain
1608 "
1609
1610 CMDLINE_APPEND="
1611     extra_cflags
1612     host_cppflags
1613 "
1614
1615 # code dependency declarations
1616
1617 # architecture extensions
1618
1619 armv5te_deps="arm"
1620 armv6_deps="arm"
1621 armv6t2_deps="arm"
1622 armv8_deps="aarch64"
1623 neon_deps_any="aarch64 arm"
1624 vfp_deps_any="aarch64 arm"
1625 vfpv3_deps="vfp"
1626
1627 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1628
1629 altivec_deps="ppc"
1630 ppc4xx_deps="ppc"
1631
1632 cpunop_deps="i686"
1633 x86_64_select="i686"
1634 x86_64_suggest="fast_cmov"
1635
1636 amd3dnow_deps="mmx"
1637 amd3dnowext_deps="amd3dnow"
1638 i686_deps="x86"
1639 mmx_deps="x86"
1640 mmxext_deps="mmx"
1641 sse_deps="mmxext"
1642 sse2_deps="sse"
1643 sse3_deps="sse2"
1644 ssse3_deps="sse3"
1645 sse4_deps="ssse3"
1646 sse42_deps="sse4"
1647 avx_deps="sse42"
1648 xop_deps="avx"
1649 fma3_deps="avx"
1650 fma4_deps="avx"
1651 avx2_deps="avx"
1652
1653 mmx_external_deps="yasm"
1654 mmx_inline_deps="inline_asm"
1655 mmx_suggest="mmx_external mmx_inline"
1656
1657 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1658     eval dep=\$${ext}_deps
1659     eval ${ext}_external_deps='"${dep}_external"'
1660     eval ${ext}_inline_deps='"${dep}_inline"'
1661     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1662 done
1663
1664 aligned_stack_if_any="aarch64 ppc x86"
1665 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1666 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1667 fast_unaligned_if_any="aarch64 ppc x86"
1668
1669 need_memalign="altivec neon sse"
1670
1671 # system capabilities
1672 log2_deps="!libc_msvcrt"
1673
1674 symver_if_any="symver_asm_label symver_gnu_asm"
1675
1676 # threading support
1677 atomics_gcc_if="sync_val_compare_and_swap"
1678 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1679 atomics_win32_if="MemoryBarrier"
1680 atomics_native_if_any="$ATOMICS_LIST"
1681 w32threads_deps="atomics_native"
1682 threads_if_any="$THREADS_LIST"
1683
1684 # subsystems
1685 dct_select="rdft"
1686 error_resilience_select="dsputil"
1687 mdct_select="fft"
1688 rdft_select="fft"
1689 mpegaudio_select="mpegaudiodsp"
1690 mpegaudiodsp_select="dct"
1691 mpegvideo_select="dsputil hpeldsp videodsp"
1692 mpegvideoenc_select="dsputil mpegvideo"
1693
1694 # decoders / encoders
1695 aac_decoder_select="mdct sinewin"
1696 aac_encoder_select="audio_frame_queue mdct sinewin"
1697 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1698 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1699 ac3_encoder_select="mdct ac3dsp dsputil"
1700 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1701 aic_decoder_select="dsputil golomb"
1702 alac_encoder_select="lpc"
1703 als_decoder_select="dsputil"
1704 amrnb_decoder_select="lsp"
1705 amrwb_decoder_select="lsp"
1706 amv_decoder_select="sp5x_decoder"
1707 ape_decoder_select="dsputil"
1708 asv1_decoder_select="dsputil"
1709 asv1_encoder_select="dsputil"
1710 asv2_decoder_select="dsputil"
1711 asv2_encoder_select="dsputil"
1712 atrac1_decoder_select="mdct sinewin"
1713 atrac3_decoder_select="mdct"
1714 atrac3p_decoder_select="mdct sinewin"
1715 bink_decoder_select="dsputil hpeldsp"
1716 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1717 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1718 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1719 cllc_decoder_select="dsputil"
1720 comfortnoise_encoder_select="lpc"
1721 cook_decoder_select="dsputil mdct sinewin"
1722 cscd_decoder_select="lzo"
1723 cscd_decoder_suggest="zlib"
1724 dca_decoder_select="mdct"
1725 dnxhd_decoder_select="dsputil"
1726 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1727 dvvideo_decoder_select="dsputil"
1728 dvvideo_encoder_select="dsputil"
1729 dxa_decoder_deps="zlib"
1730 eac3_decoder_select="ac3_decoder"
1731 eac3_encoder_select="ac3_encoder"
1732 eamad_decoder_select="aandcttables dsputil mpegvideo"
1733 eatgq_decoder_select="aandcttables dsputil"
1734 eatqi_decoder_select="aandcttables dsputil error_resilience mpegvideo"
1735 exr_decoder_deps="zlib"
1736 ffv1_decoder_select="golomb rangecoder"
1737 ffv1_encoder_select="rangecoder"
1738 ffvhuff_decoder_select="huffyuv_decoder"
1739 ffvhuff_encoder_select="huffyuv_encoder"
1740 fic_decoder_select="dsputil golomb"
1741 flac_decoder_select="golomb"
1742 flac_encoder_select="dsputil golomb lpc"
1743 flashsv_decoder_deps="zlib"
1744 flashsv_encoder_deps="zlib"
1745 flashsv2_decoder_deps="zlib"
1746 flv_decoder_select="h263_decoder"
1747 flv_encoder_select="h263_encoder"
1748 fourxm_decoder_select="dsputil"
1749 fraps_decoder_select="dsputil huffman"
1750 g2m_decoder_deps="zlib"
1751 g2m_decoder_select="dsputil"
1752 h261_decoder_select="error_resilience mpegvideo"
1753 h261_encoder_select="aandcttables mpegvideoenc"
1754 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
1755 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1756 h263i_decoder_select="h263_decoder"
1757 h263p_encoder_select="h263_encoder"
1758 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
1759 h264_decoder_suggest="error_resilience"
1760 hevc_decoder_select="cabac dsputil golomb videodsp"
1761 huffyuv_decoder_select="dsputil"
1762 huffyuv_encoder_select="dsputil huffman"
1763 iac_decoder_select="imc_decoder"
1764 imc_decoder_select="dsputil fft mdct sinewin"
1765 indeo3_decoder_select="hpeldsp"
1766 interplay_video_decoder_select="hpeldsp"
1767 jpegls_decoder_select="golomb mjpeg_decoder"
1768 jpegls_encoder_select="golomb"
1769 jv_decoder_select="dsputil"
1770 lagarith_decoder_select="dsputil"
1771 ljpeg_encoder_select="aandcttables mpegvideoenc"
1772 loco_decoder_select="golomb"
1773 mdec_decoder_select="dsputil error_resilience mpegvideo"
1774 metasound_decoder_select="lsp mdct sinewin"
1775 mimic_decoder_select="dsputil hpeldsp"
1776 mjpeg_decoder_select="dsputil hpeldsp"
1777 mjpeg_encoder_select="aandcttables mpegvideoenc"
1778 mjpegb_decoder_select="mjpeg_decoder"
1779 mlp_decoder_select="mlp_parser"
1780 motionpixels_decoder_select="dsputil"
1781 mp1_decoder_select="mpegaudio"
1782 mp1float_decoder_select="mpegaudio"
1783 mp2_decoder_select="mpegaudio"
1784 mp2float_decoder_select="mpegaudio"
1785 mp3_decoder_select="mpegaudio"
1786 mp3adu_decoder_select="mpegaudio"
1787 mp3adufloat_decoder_select="mpegaudio"
1788 mp3float_decoder_select="mpegaudio"
1789 mp3on4_decoder_select="mpegaudio"
1790 mp3on4float_decoder_select="mpegaudio"
1791 mpc7_decoder_select="dsputil mpegaudiodsp"
1792 mpc8_decoder_select="mpegaudiodsp"
1793 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1794 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1795 mpeg1video_decoder_select="error_resilience mpegvideo"
1796 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1797 mpeg2video_decoder_select="error_resilience mpegvideo"
1798 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1799 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1800 mpeg4_encoder_select="h263_encoder"
1801 msmpeg4v1_decoder_select="h263_decoder"
1802 msmpeg4v2_decoder_select="h263_decoder"
1803 msmpeg4v2_encoder_select="h263_encoder"
1804 msmpeg4v3_decoder_select="h263_decoder"
1805 msmpeg4v3_encoder_select="h263_encoder"
1806 mss2_decoder_select="error_resilience vc1_decoder"
1807 mxpeg_decoder_select="mjpeg_decoder"
1808 nellymoser_decoder_select="mdct sinewin"
1809 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1810 nuv_decoder_select="dsputil lzo"
1811 png_decoder_deps="zlib"
1812 png_encoder_deps="zlib"
1813 png_encoder_select="dsputil"
1814 prores_decoder_select="dsputil"
1815 prores_encoder_select="dsputil"
1816 qcelp_decoder_select="lsp"
1817 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1818 ra_144_encoder_select="audio_frame_queue lpc"
1819 ralf_decoder_select="golomb"
1820 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1821 rv10_encoder_select="h263_encoder"
1822 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1823 rv20_encoder_select="h263_encoder"
1824 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1825 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1826 shorten_decoder_select="golomb"
1827 sipr_decoder_select="lsp"
1828 sp5x_decoder_select="mjpeg_decoder"
1829 svq1_decoder_select="hpeldsp"
1830 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1831 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1832 svq3_decoder_suggest="zlib"
1833 tak_decoder_select="dsputil"
1834 theora_decoder_select="vp3_decoder"
1835 thp_decoder_select="mjpeg_decoder"
1836 tiff_decoder_suggest="zlib"
1837 tiff_encoder_suggest="zlib"
1838 truehd_decoder_select="mlp_decoder"
1839 truemotion2_decoder_select="dsputil"
1840 truespeech_decoder_select="dsputil"
1841 tscc_decoder_deps="zlib"
1842 twinvq_decoder_select="mdct lsp sinewin"
1843 utvideo_decoder_select="dsputil"
1844 utvideo_encoder_select="dsputil huffman"
1845 vble_decoder_select="dsputil"
1846 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
1847 vc1image_decoder_select="vc1_decoder"
1848 vorbis_decoder_select="mdct"
1849 vorbis_encoder_select="mdct"
1850 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1851 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1852 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1853 vp6a_decoder_select="vp6_decoder"
1854 vp6f_decoder_select="vp6_decoder"
1855 vp7_decoder_select="h264pred videodsp"
1856 vp8_decoder_select="h264pred videodsp"
1857 vp9_decoder_select="videodsp"
1858 webp_decoder_select="vp8_decoder"
1859 wmapro_decoder_select="mdct sinewin"
1860 wmav1_decoder_select="mdct sinewin"
1861 wmav1_encoder_select="mdct sinewin"
1862 wmav2_decoder_select="mdct sinewin"
1863 wmav2_encoder_select="mdct sinewin"
1864 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1865 wmv1_decoder_select="h263_decoder"
1866 wmv1_encoder_select="h263_encoder"
1867 wmv2_decoder_select="h263_decoder intrax8 videodsp"
1868 wmv2_encoder_select="h263_encoder"
1869 wmv3_decoder_select="vc1_decoder"
1870 wmv3image_decoder_select="wmv3_decoder"
1871 zerocodec_decoder_deps="zlib"
1872 zlib_decoder_deps="zlib"
1873 zlib_encoder_deps="zlib"
1874 zmbv_decoder_deps="zlib"
1875 zmbv_encoder_deps="zlib"
1876
1877 # hardware accelerators
1878 dxva2_deps="dxva2api_h"
1879 vaapi_deps="va_va_h"
1880 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1881 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1882 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1883
1884 h263_vaapi_hwaccel_deps="vaapi"
1885 h263_vaapi_hwaccel_select="h263_decoder"
1886 h263_vdpau_hwaccel_deps="vdpau"
1887 h263_vdpau_hwaccel_select="h263_decoder"
1888 h264_dxva2_hwaccel_deps="dxva2"
1889 h264_dxva2_hwaccel_select="h264_decoder"
1890 h264_vaapi_hwaccel_deps="vaapi"
1891 h264_vaapi_hwaccel_select="h264_decoder"
1892 h264_vda_hwaccel_deps="vda"
1893 h264_vda_hwaccel_select="h264_decoder"
1894 h264_vdpau_hwaccel_deps="vdpau"
1895 h264_vdpau_hwaccel_select="h264_decoder"
1896 mpeg1_vdpau_hwaccel_deps="vdpau"
1897 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1898 mpeg2_dxva2_hwaccel_deps="dxva2"
1899 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1900 mpeg2_vaapi_hwaccel_deps="vaapi"
1901 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1902 mpeg2_vdpau_hwaccel_deps="vdpau"
1903 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1904 mpeg4_vaapi_hwaccel_deps="vaapi"
1905 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1906 mpeg4_vdpau_hwaccel_deps="vdpau"
1907 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1908 vc1_dxva2_hwaccel_deps="dxva2"
1909 vc1_dxva2_hwaccel_select="vc1_decoder"
1910 vc1_vaapi_hwaccel_deps="vaapi"
1911 vc1_vaapi_hwaccel_select="vc1_decoder"
1912 vc1_vdpau_hwaccel_deps="vdpau"
1913 vc1_vdpau_hwaccel_select="vc1_decoder"
1914 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1915 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1916 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1917
1918 # parsers
1919 h264_parser_select="h264_decoder"
1920 mpeg4video_parser_select="error_resilience h263dsp mpegvideo"
1921 mpegvideo_parser_select="error_resilience mpegvideo"
1922 vc1_parser_select="mpegvideo"
1923
1924 # external libraries
1925 libfaac_encoder_deps="libfaac"
1926 libfaac_encoder_select="audio_frame_queue"
1927 libfdk_aac_decoder_deps="libfdk_aac"
1928 libfdk_aac_encoder_deps="libfdk_aac"
1929 libfdk_aac_encoder_select="audio_frame_queue"
1930 libgsm_decoder_deps="libgsm"
1931 libgsm_encoder_deps="libgsm"
1932 libgsm_ms_decoder_deps="libgsm"
1933 libgsm_ms_encoder_deps="libgsm"
1934 libilbc_decoder_deps="libilbc"
1935 libilbc_encoder_deps="libilbc"
1936 libmp3lame_encoder_deps="libmp3lame"
1937 libmp3lame_encoder_select="audio_frame_queue"
1938 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1939 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1940 libopencore_amrnb_encoder_select="audio_frame_queue"
1941 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1942 libopenjpeg_decoder_deps="libopenjpeg"
1943 libopenjpeg_encoder_deps="libopenjpeg"
1944 libopus_decoder_deps="libopus"
1945 libopus_encoder_deps="libopus"
1946 libopus_encoder_select="audio_frame_queue"
1947 libschroedinger_decoder_deps="libschroedinger"
1948 libschroedinger_encoder_deps="libschroedinger"
1949 libspeex_decoder_deps="libspeex"
1950 libspeex_encoder_deps="libspeex"
1951 libspeex_encoder_select="audio_frame_queue"
1952 libtheora_encoder_deps="libtheora"
1953 libtwolame_encoder_deps="libtwolame"
1954 libvo_aacenc_encoder_deps="libvo_aacenc"
1955 libvo_aacenc_encoder_select="audio_frame_queue"
1956 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1957 libvorbis_encoder_deps="libvorbis"
1958 libvorbis_encoder_select="audio_frame_queue"
1959 libvpx_vp8_decoder_deps="libvpx"
1960 libvpx_vp8_encoder_deps="libvpx"
1961 libvpx_vp9_decoder_deps="libvpx"
1962 libvpx_vp9_encoder_deps="libvpx"
1963 libwavpack_encoder_deps="libwavpack"
1964 libwebp_encoder_deps="libwebp"
1965 libx264_encoder_deps="libx264"
1966 libx265_encoder_deps="libx265"
1967 libxavs_encoder_deps="libxavs"
1968 libxvid_encoder_deps="libxvid"
1969
1970 # demuxers / muxers
1971 ac3_demuxer_select="ac3_parser"
1972 asf_demuxer_select="riffdec"
1973 asf_muxer_select="riffenc"
1974 asf_stream_muxer_select="asf_muxer"
1975 avi_demuxer_select="riffdec"
1976 avi_muxer_select="riffenc"
1977 avisynth_demuxer_deps="avisynth"
1978 avisynth_demuxer_select="riffdec"
1979 caf_demuxer_select="riffdec"
1980 dirac_demuxer_select="dirac_parser"
1981 dxa_demuxer_select="riffdec"
1982 eac3_demuxer_select="ac3_parser"
1983 f4v_muxer_select="mov_muxer"
1984 flac_demuxer_select="flac_parser"
1985 hds_muxer_select="flv_muxer"
1986 hls_muxer_select="mpegts_muxer"
1987 ipod_muxer_select="mov_muxer"
1988 ismv_muxer_select="mov_muxer"
1989 matroska_audio_muxer_select="matroska_muxer"
1990 matroska_demuxer_select="riffdec"
1991 matroska_demuxer_suggest="bzlib lzo zlib"
1992 matroska_muxer_select="riffenc"
1993 mmf_muxer_select="riffenc"
1994 mov_demuxer_select="riffdec"
1995 mov_demuxer_suggest="zlib"
1996 mov_muxer_select="riffenc rtpenc_chain"
1997 mp3_demuxer_select="mpegaudio_parser"
1998 mp4_muxer_select="mov_muxer"
1999 mpegts_muxer_select="adts_muxer latm_muxer"
2000 mpegtsraw_demuxer_select="mpegts_demuxer"
2001 mxf_d10_muxer_select="mxf_muxer"
2002 nut_muxer_select="riffenc"
2003 nuv_demuxer_select="riffdec"
2004 ogg_demuxer_select="golomb"
2005 psp_muxer_select="mov_muxer"
2006 rtp_demuxer_select="sdp_demuxer"
2007 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2008 rtsp_demuxer_select="http_protocol rtpdec"
2009 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2010 sap_demuxer_select="sdp_demuxer"
2011 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2012 sdp_demuxer_select="rtpdec"
2013 smoothstreaming_muxer_select="ismv_muxer"
2014 spdif_muxer_select="aac_parser"
2015 tak_demuxer_select="tak_parser"
2016 tg2_muxer_select="mov_muxer"
2017 tgp_muxer_select="mov_muxer"
2018 w64_demuxer_select="wav_demuxer"
2019 wav_demuxer_select="riffdec"
2020 wav_muxer_select="riffenc"
2021 webm_muxer_select="riffenc"
2022 wtv_demuxer_select="riffdec"
2023 xmv_demuxer_select="riffdec"
2024 xwma_demuxer_select="riffdec"
2025
2026 # indevs / outdevs
2027 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2028 alsa_outdev_deps="alsa_asoundlib_h"
2029 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2030 dv1394_indev_deps="dv1394"
2031 dv1394_indev_select="dv_demuxer"
2032 fbdev_indev_deps="linux_fb_h"
2033 jack_indev_deps="jack_jack_h pthreads"
2034 libcdio_indev_deps="libcdio"
2035 libdc1394_indev_deps="libdc1394"
2036 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2037 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2038 pulse_indev_deps="libpulse"
2039 sndio_indev_deps="sndio_h"
2040 sndio_outdev_deps="sndio_h"
2041 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2042 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2043 vfwcap_indev_extralibs="-lavicap32"
2044 x11grab_indev_deps="x11grab XShmCreateImage"
2045
2046 # protocols
2047 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2048 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2049 ffrtmpcrypt_protocol_select="tcp_protocol"
2050 ffrtmphttp_protocol_deps="!librtmp_protocol"
2051 ffrtmphttp_protocol_select="http_protocol"
2052 gopher_protocol_select="network"
2053 http_protocol_select="tcp_protocol"
2054 httpproxy_protocol_select="tcp_protocol"
2055 https_protocol_select="tls_protocol"
2056 librtmp_protocol_deps="librtmp"
2057 librtmpe_protocol_deps="librtmp"
2058 librtmps_protocol_deps="librtmp"
2059 librtmpt_protocol_deps="librtmp"
2060 librtmpte_protocol_deps="librtmp"
2061 mmsh_protocol_select="http_protocol"
2062 mmst_protocol_select="network"
2063 rtmp_protocol_deps="!librtmp_protocol"
2064 rtmp_protocol_select="tcp_protocol"
2065 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2066 rtmps_protocol_deps="!librtmp_protocol"
2067 rtmps_protocol_select="tls_protocol"
2068 rtmpt_protocol_select="ffrtmphttp_protocol"
2069 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2070 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2071 rtp_protocol_select="udp_protocol"
2072 sctp_protocol_deps="struct_sctp_event_subscribe"
2073 sctp_protocol_select="network"
2074 srtp_protocol_select="rtp_protocol"
2075 tcp_protocol_select="network"
2076 tls_protocol_deps_any="openssl gnutls"
2077 tls_protocol_select="tcp_protocol"
2078 udp_protocol_select="network"
2079 unix_protocol_deps="sys_un_h"
2080 unix_protocol_select="network"
2081
2082 # filters
2083 blackframe_filter_deps="gpl"
2084 boxblur_filter_deps="gpl"
2085 cropdetect_filter_deps="gpl"
2086 delogo_filter_deps="gpl"
2087 drawtext_filter_deps="libfreetype"
2088 frei0r_filter_deps="frei0r dlopen"
2089 frei0r_filter_extralibs='$ldl'
2090 frei0r_src_filter_deps="frei0r dlopen"
2091 frei0r_src_filter_extralibs='$ldl'
2092 hqdn3d_filter_deps="gpl"
2093 interlace_filter_deps="gpl"
2094 ocv_filter_deps="libopencv"
2095 resample_filter_deps="avresample"
2096 scale_filter_deps="swscale"
2097
2098 # examples
2099 avcodec_example_deps="avcodec avutil"
2100 filter_audio_example_deps="avfilter avutil"
2101 metadata_example_deps="avformat avutil"
2102 output_example_deps="avcodec avformat avutil swscale"
2103 transcode_aac_example_deps="avcodec avformat avresample"
2104
2105 # libraries
2106 avcodec_deps="avutil"
2107 avdevice_deps="avutil avcodec avformat"
2108 avfilter_deps="avutil"
2109 avformat_deps="avutil avcodec"
2110 avresample_deps="avutil"
2111 swscale_deps="avutil"
2112
2113 # programs
2114 avconv_deps="avcodec avfilter avformat avresample swscale"
2115 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2116                fps_filter null_filter resample_filter scale_filter
2117                setpts_filter trim_filter"
2118 avplay_deps="avcodec avformat avresample swscale sdl"
2119 avplay_libs='$sdl_libs'
2120 avplay_select="rdft"
2121 avprobe_deps="avcodec avformat"
2122 avserver_deps="avformat fork !shared"
2123 avserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2124
2125 # documentation
2126 pod2man_deps="doc"
2127 texi2html_deps="doc"
2128
2129 # default parameters
2130
2131 logfile="config.log"
2132
2133 # installation paths
2134 prefix_default="/usr/local"
2135 bindir_default='${prefix}/bin'
2136 datadir_default='${prefix}/share/avconv'
2137 docdir_default='${prefix}/share/doc/libav'
2138 incdir_default='${prefix}/include'
2139 libdir_default='${prefix}/lib'
2140 mandir_default='${prefix}/share/man'
2141 shlibdir_default="$libdir_default"
2142
2143 # toolchain
2144 ar_default="ar"
2145 cc_default="gcc"
2146 host_cc_default="gcc"
2147 cp_f="cp -f"
2148 ln_s="ln -s -f"
2149 nm_default="nm -g"
2150 objformat="elf"
2151 pkg_config_default=pkg-config
2152 ranlib="ranlib"
2153 strip="strip"
2154 yasmexe="yasm"
2155
2156 nogas=":"
2157
2158 # machine
2159 arch_default=$(uname -m)
2160 cpu="generic"
2161
2162 # OS
2163 target_os_default=$(tolower $(uname -s))
2164 host_os=$target_os_default
2165
2166 # configurable options
2167 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2168
2169 enable asm
2170 enable debug
2171 enable doc
2172 enable optimizations
2173 enable safe_bitstream_reader
2174 enable static
2175 enable swscale_alpha
2176
2177 # By default, enable only those hwaccels that have no external dependencies.
2178 enable dxva2 vdpau
2179
2180 # build settings
2181 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2182 LIBPREF="lib"
2183 LIBSUF=".a"
2184 FULLNAME='$(NAME)$(BUILDSUF)'
2185 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2186 SLIBPREF="lib"
2187 SLIBSUF=".so"
2188 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2189 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2190 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2191 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2192 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2193 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2194
2195 asflags_filter=echo
2196 cflags_filter=echo
2197 ldflags_filter=echo
2198
2199 AS_C='-c'
2200 AS_O='-o $@'
2201 CC_C='-c'
2202 CC_E='-E -o $@'
2203 CC_O='-o $@'
2204 LD_O='-o $@'
2205 LD_LIB='-l%'
2206 LD_PATH='-L'
2207 HOSTCC_C='-c'
2208 HOSTCC_E='-E -o $@'
2209 HOSTCC_O='-o $@'
2210 HOSTLD_O='-o $@'
2211
2212 host_libs='-lm'
2213 host_cflags_filter=echo
2214 host_ldflags_filter=echo
2215
2216 target_path='$(CURDIR)'
2217
2218 # since the object filename is not given with the -MM flag, the compiler
2219 # is only able to print the basename, and we must add the path ourselves
2220 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2221 DEPFLAGS='-MM'
2222
2223 # find source path
2224 if test -f configure; then
2225     source_path=.
2226 else
2227     source_path=$(cd $(dirname "$0"); pwd)
2228     echo "$source_path" | grep -q '[[:blank:]]' &&
2229         die "Out of tree builds are impossible with whitespace in source path."
2230     test -e "$source_path/config.h" &&
2231         die "Out of tree builds are impossible with config.h in source dir."
2232 fi
2233
2234 for v in "$@"; do
2235     r=${v#*=}
2236     l=${v%"$r"}
2237     r=$(sh_quote "$r")
2238     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2239 done
2240
2241 find_things(){
2242     thing=$1
2243     pattern=$2
2244     file=$source_path/$3
2245     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2246 }
2247
2248 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2249 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2250 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2251 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2252 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2253 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2254 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2255 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2256 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2257 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2258 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2259
2260 ALL_COMPONENTS="
2261     $BSF_LIST
2262     $DECODER_LIST
2263     $DEMUXER_LIST
2264     $ENCODER_LIST
2265     $FILTER_LIST
2266     $HWACCEL_LIST
2267     $INDEV_LIST
2268     $MUXER_LIST
2269     $OUTDEV_LIST
2270     $PARSER_LIST
2271     $PROTOCOL_LIST
2272 "
2273
2274 for n in $COMPONENT_LIST; do
2275     v=$(toupper ${n%s})_LIST
2276     eval enable \$$v
2277     eval ${n}_if_any="\$$v"
2278 done
2279
2280 enable $ARCH_EXT_LIST
2281
2282 die_unknown(){
2283     echo "Unknown option \"$1\"."
2284     echo "See $0 --help for available options."
2285     exit 1
2286 }
2287
2288 print_3_columns() {
2289     cat | tr ' ' '\n' | sort | pr -r -3 -t
2290 }
2291
2292 show_list() {
2293     suffix=_$1
2294     shift
2295     echo $* | sed s/$suffix//g | print_3_columns
2296     exit 0
2297 }
2298
2299 rand_list(){
2300     IFS=', '
2301     set -- $*
2302     unset IFS
2303     for thing; do
2304         comp=${thing%:*}
2305         prob=${thing#$comp}
2306         prob=${prob#:}
2307         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2308         echo "prob ${prob:-0.5}"
2309         printf '%s\n' $comp
2310     done
2311 }
2312
2313 do_random(){
2314     action=$1
2315     shift
2316     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2317     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2318 }
2319
2320 for opt do
2321     optval="${opt#*=}"
2322     case "$opt" in
2323         --extra-ldflags=*)
2324             add_ldflags $optval
2325         ;;
2326         --extra-libs=*)
2327             add_extralibs $optval
2328         ;;
2329         --disable-devices)
2330             disable $INDEV_LIST $OUTDEV_LIST
2331         ;;
2332         --enable-debug=*)
2333             debuglevel="$optval"
2334         ;;
2335         --disable-programs)
2336             disable $PROGRAM_LIST
2337         ;;
2338         --disable-everything)
2339             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2340         ;;
2341         --disable-all)
2342             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2343             disable $LIBRARY_LIST $PROGRAM_LIST doc
2344         ;;
2345         --enable-random|--disable-random)
2346             action=${opt%%-random}
2347             do_random ${action#--} $COMPONENT_LIST
2348         ;;
2349         --enable-random=*|--disable-random=*)
2350             action=${opt%%-random=*}
2351             do_random ${action#--} $optval
2352         ;;
2353         --enable-*=*|--disable-*=*)
2354             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2355             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2356             eval list=\$$(toupper $thing)_LIST
2357             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2358             $action $(filter "$name" $list)
2359         ;;
2360         --enable-?*|--disable-?*)
2361             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2362             if is_in $option $COMPONENT_LIST; then
2363                 test $action = disable && action=unset
2364                 eval $action \$$(toupper ${option%s})_LIST
2365             elif is_in $option $CMDLINE_SELECT; then
2366                 $action $option
2367             else
2368                 die_unknown $opt
2369             fi
2370         ;;
2371         --list-*)
2372             NAME="${opt#--list-}"
2373             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2374             NAME=${NAME%s}
2375             eval show_list $NAME \$$(toupper $NAME)_LIST
2376         ;;
2377         --help|-h) show_help
2378         ;;
2379         *)
2380             optname="${opt%%=*}"
2381             optname="${optname#--}"
2382             optname=$(echo "$optname" | sed 's/-/_/g')
2383             if is_in $optname $CMDLINE_SET; then
2384                 eval $optname='$optval'
2385             elif is_in $optname $CMDLINE_APPEND; then
2386                 append $optname "$optval"
2387             else
2388                 die_unknown $opt
2389             fi
2390         ;;
2391     esac
2392 done
2393
2394 disabled logging && logfile=/dev/null
2395
2396 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2397 set >> $logfile
2398
2399 test -n "$cross_prefix" && enable cross_compile
2400
2401 if enabled cross_compile; then
2402     test -n "$arch" && test -n "$target_os" ||
2403         die "Must specify target arch and OS when cross-compiling"
2404 fi
2405
2406 ar_default="${cross_prefix}${ar_default}"
2407 cc_default="${cross_prefix}${cc_default}"
2408 nm_default="${cross_prefix}${nm_default}"
2409 pkg_config_default="${cross_prefix}${pkg_config_default}"
2410 ranlib="${cross_prefix}${ranlib}"
2411 strip="${cross_prefix}${strip}"
2412
2413 sysinclude_default="${sysroot}/usr/include"
2414
2415 case "$toolchain" in
2416     clang-asan)
2417         cc_default="clang"
2418         add_cflags  -fsanitize=address
2419         add_ldflags -fsanitize=address
2420     ;;
2421     clang-tsan)
2422         cc_default="clang"
2423         add_cflags  -fsanitize=thread -pie
2424         add_ldflags -fsanitize=thread -pie
2425     ;;
2426     clang-usan)
2427         cc_default="clang"
2428         add_cflags  -fsanitize=undefined
2429         add_ldflags -fsanitize=undefined
2430     ;;
2431     gcc-asan)
2432         cc_default="gcc"
2433         add_cflags  -fsanitize=address
2434         add_ldflags -fsanitize=address
2435     ;;
2436     gcc-tsan)
2437         cc_default="gcc"
2438         add_cflags  -fsanitize=thread -pie -fPIC
2439         add_ldflags -fsanitize=thread -pie -fPIC
2440     ;;
2441     gcc-usan)
2442         cc_default="gcc"
2443         add_cflags  -fsanitize=undefined
2444         add_ldflags -fsanitize=undefined
2445     ;;
2446     valgrind-massif)
2447         target_exec_default="valgrind"
2448         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2449     ;;
2450     valgrind-memcheck)
2451         target_exec_default="valgrind"
2452         target_exec_args="--track-origins=yes --leak-check=full"
2453     ;;
2454     msvc)
2455         # Check whether the current MSVC version needs the C99 converter.
2456         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2457         # support enough of C99 to build libav. Default to the new
2458         # behaviour if the regexp was unable to match anything, since this
2459         # successfully parses the version number of existing supported
2460         # versions that require the converter (MSVC 2010 and 2012).
2461         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2462         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2463             cc_default="cl"
2464         else
2465             cc_default="c99wrap cl"
2466         fi
2467         ld_default="link"
2468         nm_default="dumpbin -symbols"
2469         ar_default="lib"
2470         target_os_default="win32"
2471         # Use a relative path for TMPDIR. This makes sure all the
2472         # ffconf temp files are written with a relative path, avoiding
2473         # issues with msys/win32 path conversion for MSVC parameters
2474         # such as -Fo<file> or -out:<file>.
2475         TMPDIR=.
2476     ;;
2477     icl)
2478         cc_default="icl"
2479         ld_default="xilink"
2480         nm_default="dumpbin -symbols"
2481         ar_default="xilib"
2482         target_os_default="win32"
2483         TMPDIR=.
2484     ;;
2485     gcov)
2486         add_cflags  -fprofile-arcs -ftest-coverage
2487         add_ldflags -fprofile-arcs -ftest-coverage
2488     ;;
2489     hardened)
2490         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2491         add_ldflags -Wl,-z,relro -Wl,-z,now
2492     ;;
2493     ?*)
2494         die "Unknown toolchain $toolchain"
2495     ;;
2496 esac
2497
2498 set_default arch cc pkg_config sysinclude target_exec target_os
2499 enabled cross_compile || host_cc_default=$cc
2500 set_default host_cc
2501
2502 if ! $pkg_config --version >/dev/null 2>&1; then
2503     warn "$pkg_config not found, library detection may fail."
2504     pkg_config=false
2505 fi
2506
2507 exesuf() {
2508     case $1 in
2509         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2510     esac
2511 }
2512
2513 EXESUF=$(exesuf $target_os)
2514 HOSTEXESUF=$(exesuf $host_os)
2515
2516 # set temporary file name
2517 : ${TMPDIR:=$TEMPDIR}
2518 : ${TMPDIR:=$TMP}
2519 : ${TMPDIR:=/tmp}
2520
2521 if ! check_cmd mktemp -u XXXXXX; then
2522     # simple replacement for missing mktemp
2523     # NOT SAFE FOR GENERAL USE
2524     mktemp(){
2525         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2526     }
2527 fi
2528
2529 tmpfile(){
2530     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2531         (set -C; exec > $tmp) 2>/dev/null ||
2532         die "Unable to create temporary file in $TMPDIR."
2533     append TMPFILES $tmp
2534     eval $1=$tmp
2535 }
2536
2537 trap 'rm -f -- $TMPFILES' EXIT
2538
2539 tmpfile TMPASM .asm
2540 tmpfile TMPC   .c
2541 tmpfile TMPE   $EXESUF
2542 tmpfile TMPH   .h
2543 tmpfile TMPO   .o
2544 tmpfile TMPS   .S
2545 tmpfile TMPSH  .sh
2546 tmpfile TMPV   .ver
2547
2548 unset -f mktemp
2549
2550 chmod +x $TMPE
2551
2552 # make sure we can execute files in $TMPDIR
2553 cat > $TMPSH 2>> $logfile <<EOF
2554 #! /bin/sh
2555 EOF
2556 chmod +x $TMPSH >> $logfile 2>&1
2557 if ! $TMPSH >> $logfile 2>&1; then
2558     cat <<EOF
2559 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2560 variable to another directory and make sure that it is not mounted noexec.
2561 EOF
2562     die "Sanity test failed."
2563 fi
2564
2565 ccc_flags(){
2566     for flag; do
2567         case $flag in
2568             -std=c99)           echo -c99                       ;;
2569             -mcpu=*)            echo -arch ${flag#*=}           ;;
2570             -mieee)             echo -ieee                      ;;
2571             -O*|-fast)          echo $flag                      ;;
2572             -fno-math-errno)    echo -assume nomath_errno       ;;
2573             -g)                 echo -g3                        ;;
2574             -Wall)              echo -msg_enable level2         ;;
2575             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2576             -Wl,*)              echo $flag                      ;;
2577             -f*|-W*)                                            ;;
2578             *)                  echo $flag                      ;;
2579         esac
2580    done
2581 }
2582
2583 cparser_flags(){
2584     for flag; do
2585         case $flag in
2586             -Wno-switch)             echo -Wno-switch-enum ;;
2587             -Wno-format-zero-length) ;;
2588             -Wdisabled-optimization) ;;
2589             -Wno-pointer-sign)       echo -Wno-other ;;
2590             *)                       echo $flag ;;
2591         esac
2592     done
2593 }
2594
2595 msvc_common_flags(){
2596     for flag; do
2597         case $flag in
2598             # In addition to specifying certain flags under the compiler
2599             # specific filters, they must be specified here as well or else the
2600             # generic catch all at the bottom will print the original flag.
2601             -Wall)                ;;
2602             -std=c99)             ;;
2603             # Common flags
2604             -fomit-frame-pointer) ;;
2605             -g)                   echo -Z7 ;;
2606             -fno-math-errno)      ;;
2607             -fno-common)          ;;
2608             -fno-signed-zeros)    ;;
2609             -fPIC)                ;;
2610             -mthumb)              ;;
2611             -march=*)             ;;
2612             -lz)                  echo zlib.lib ;;
2613             -lavifil32)           echo vfw32.lib ;;
2614             -lavicap32)           echo vfw32.lib user32.lib ;;
2615             -l*)                  echo ${flag#-l}.lib ;;
2616             *)                    echo $flag ;;
2617         esac
2618     done
2619 }
2620
2621 msvc_flags(){
2622     msvc_common_flags "$@"
2623     for flag; do
2624         case $flag in
2625             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2626                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2627                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2628                                        -wd4273 ;;
2629         esac
2630     done
2631 }
2632
2633 icl_flags(){
2634     msvc_common_flags "$@"
2635     for flag; do
2636         case $flag in
2637             # Despite what Intel's documentation says -Wall, which is supported
2638             # on Windows, does enable remarks so disable them here.
2639             -Wall)                echo $flag -Qdiag-disable:remark ;;
2640             -std=c99)             echo -Qstd=c99 ;;
2641         esac
2642     done
2643 }
2644
2645 pgi_flags(){
2646     for flag; do
2647         case $flag in
2648             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2649             -fomit-frame-pointer) echo -Mnoframe ;;
2650             -g)                   echo -gopt ;;
2651             *)                    echo $flag ;;
2652         esac
2653     done
2654 }
2655
2656 suncc_flags(){
2657     for flag; do
2658         case $flag in
2659             -march=*|-mcpu=*)
2660                 case "${flag#*=}" in
2661                     native)                   echo -xtarget=native       ;;
2662                     v9|niagara)               echo -xarch=sparc          ;;
2663                     ultrasparc)               echo -xarch=sparcvis       ;;
2664                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2665                     i586|pentium)             echo -xchip=pentium        ;;
2666                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2667                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2668                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2669                     pentium4*)          echo -xtarget=pentium4           ;;
2670                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2671                     *-sse3)             echo -xarch=sse3                 ;;
2672                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2673                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2674                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2675                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2676                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2677                     k8|opteron|athlon64|athlon-fx)
2678                                                echo -xarch=sse2a         ;;
2679                     athlon*)                   echo -xarch=pentium_proa  ;;
2680                 esac
2681                 ;;
2682             -std=c99)             echo -xc99              ;;
2683             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2684             -fPIC)                echo -KPIC -xcode=pic32 ;;
2685             -W*,*)                echo $flag              ;;
2686             -f*-*|-W*|-mimpure-text)                      ;;
2687             -shared)              echo -G                 ;;
2688             *)                    echo $flag              ;;
2689         esac
2690     done
2691 }
2692
2693 tms470_flags(){
2694     for flag; do
2695         case $flag in
2696             -march=*|-mcpu=*)
2697                 case "${flag#*=}" in
2698                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2699                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2700                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2701                     armv6*|arm11*)          echo -mv=6   ;;
2702                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2703                                             echo -mv=5e  ;;
2704                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2705                 esac
2706                 ;;
2707             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2708             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2709             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2710             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2711             -msoft-float)   echo --float_support=vfplib       ;;
2712             -O[0-3]|-mf=*)  echo $flag                        ;;
2713             -g)             echo -g -mn                       ;;
2714             -pds=*)         echo $flag                        ;;
2715             -D*|-I*)        echo $flag                        ;;
2716             --gcc|--abi=*)  echo $flag                        ;;
2717             -me)            echo $flag                        ;;
2718         esac
2719     done
2720 }
2721
2722 probe_cc(){
2723     pfx=$1
2724     _cc=$2
2725
2726     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2727     unset _ld_o _ldflags _ld_lib _ld_path
2728     unset _depflags _DEPCMD _DEPFLAGS
2729     _flags_filter=echo
2730
2731     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2732         _type=llvm_gcc
2733         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2734         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2735         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2736         _cflags_speed='-O3'
2737         _cflags_size='-Os'
2738     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2739         _type=gcc
2740         gcc_version=$($_cc --version | head -n1)
2741         gcc_basever=$($_cc -dumpversion)
2742         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2743         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2744         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2745         if ! $_cc -dumpversion | grep -q '^2\.'; then
2746             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2747         fi
2748         _cflags_speed='-O3'
2749         _cflags_size='-Os'
2750     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2751         _type=icc
2752         _ident=$($_cc --version | head -n1)
2753         _depflags='-MMD'
2754         _cflags_speed='-O3'
2755         _cflags_size='-Os'
2756         _cflags_noopt='-O1'
2757     elif $_cc -v 2>&1 | grep -q xlc; then
2758         _type=xlc
2759         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2760         _cflags_speed='-O5'
2761         _cflags_size='-O5 -qcompact'
2762     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2763         _type=ccc
2764         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2765         _DEPFLAGS='-M'
2766         _cflags_speed='-fast'
2767         _cflags_size='-O1'
2768         _flags_filter=ccc_flags
2769     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2770         test -d "$sysroot" || die "No valid sysroot specified."
2771         _type=armcc
2772         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
2773         armcc_conf="$PWD/armcc.conf"
2774         $_cc --arm_linux_configure                 \
2775              --arm_linux_config_file="$armcc_conf" \
2776              --configure_sysroot="$sysroot"        \
2777              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2778              die "Error creating armcc configuration file."
2779         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2780         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2781         as_default="${cross_prefix}gcc"
2782         _depflags='-MMD'
2783         _cflags_speed='-O3'
2784         _cflags_size='-Os'
2785     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2786         _type=tms470
2787         _ident=$($_cc -version | head -n1 | tr -s ' ')
2788         _flags='--gcc --abi=eabi -me'
2789         _cc_e='-ppl -fe=$@'
2790         _cc_o='-fe=$@'
2791         _depflags='-ppa -ppd=$(@:.o=.d)'
2792         _cflags_speed='-O3 -mf=5'
2793         _cflags_size='-O3 -mf=2'
2794         _flags_filter=tms470_flags
2795     elif $_cc -v 2>&1 | grep -q clang; then
2796         _type=clang
2797         _ident=$($_cc --version | head -n1)
2798         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2799         _cflags_speed='-O3'
2800         _cflags_size='-Os'
2801     elif $_cc -V 2>&1 | grep -q Sun; then
2802         _type=suncc
2803         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2804         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2805         _DEPFLAGS='-xM1 -xc99'
2806         _ldflags='-std=c99'
2807         _cflags_speed='-O5'
2808         _cflags_size='-O5 -xspace'
2809         _flags_filter=suncc_flags
2810     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2811         _type=pathscale
2812         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2813         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2814         _cflags_speed='-O2'
2815         _cflags_size='-Os'
2816         _flags_filter='filter_out -Wdisabled-optimization'
2817     elif $_cc -v 2>&1 | grep -q Open64; then
2818         _type=open64
2819         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2820         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2821         _cflags_speed='-O2'
2822         _cflags_size='-Os'
2823         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2824     elif $_cc -V 2>&1 | grep -q Portland; then
2825         _type=pgi
2826         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2827         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2828         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2829         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2830         _cflags_noopt="-O1"
2831         _flags_filter=pgi_flags
2832     elif $_cc 2>&1 | grep -q Microsoft; then
2833         _type=msvc
2834         _ident=$($cc 2>&1 | head -n1)
2835         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2836         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2837         _cflags_speed="-O2"
2838         _cflags_size="-O1"
2839         if $_cc 2>&1 | grep -q Linker; then
2840             _ld_o='-out:$@'
2841         else
2842             _ld_o='-Fe$@'
2843         fi
2844         _cc_o='-Fo$@'
2845         _cc_e='-P -Fi$@'
2846         _flags_filter=msvc_flags
2847         _ld_lib='lib%.a'
2848         _ld_path='-libpath:'
2849         _flags='-nologo'
2850         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2851         if [ $pfx = hostcc ]; then
2852             append _cflags -Dsnprintf=_snprintf
2853         fi
2854     elif $_cc 2>&1 | grep -q Intel; then
2855         _type=icl
2856         _ident=$($cc 2>&1 | head -n1)
2857         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2858         # Not only is O3 broken on 13.x+ but it is slower on all previous
2859         # versions (tested) as well.
2860         _cflags_speed="-O2"
2861         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2862         if $_cc 2>&1 | grep -q Linker; then
2863             _ld_o='-out:$@'
2864         else
2865             _ld_o='-Fe$@'
2866         fi
2867         _cc_o='-Fo$@'
2868         _cc_e='-P'
2869         _flags_filter=icl_flags
2870         _ld_lib='lib%.a'
2871         _ld_path='-libpath:'
2872         # -Qdiag-error to make icl error when seeing certain unknown arguments
2873         _flags='-nologo -Qdiag-error:4044,10157'
2874         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2875         # with MSVC which enables it by default.
2876         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2877         if [ $pfx = hostcc ]; then
2878             append _cflags -Dsnprintf=_snprintf
2879         fi
2880     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2881         _type=cparser
2882         _ident=$($_cc --version | head -n1)
2883         _depflags='-MMD'
2884         _cflags_speed='-O4'
2885         _cflags_size='-O2'
2886         _flags_filter=cparser_flags
2887     fi
2888
2889     eval ${pfx}_type=\$_type
2890     eval ${pfx}_ident=\$_ident
2891 }
2892
2893 set_ccvars(){
2894     eval ${1}_C=\${_cc_c-\${${1}_C}}
2895     eval ${1}_E=\${_cc_e-\${${1}_E}}
2896     eval ${1}_O=\${_cc_o-\${${1}_O}}
2897
2898     if [ -n "$_depflags" ]; then
2899         eval ${1}_DEPFLAGS=\$_depflags
2900     else
2901         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2902         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2903         eval DEP${1}FLAGS=\$_flags
2904     fi
2905 }
2906
2907 probe_cc cc "$cc"
2908 cflags_filter=$_flags_filter
2909 cflags_speed=$_cflags_speed
2910 cflags_size=$_cflags_size
2911 cflags_noopt=$_cflags_noopt
2912 add_cflags $_flags $_cflags
2913 cc_ldflags=$_ldflags
2914 set_ccvars CC
2915
2916 probe_cc hostcc "$host_cc"
2917 host_cflags_filter=$_flags_filter
2918 add_host_cflags  $_flags $_cflags
2919 set_ccvars HOSTCC
2920
2921 test -n "$cc_type" && enable $cc_type ||
2922     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2923
2924 : ${as_default:=$cc}
2925 : ${dep_cc_default:=$cc}
2926 : ${ld_default:=$cc}
2927 : ${host_ld_default:=$host_cc}
2928 set_default ar as dep_cc ld host_ld
2929
2930 probe_cc as "$as"
2931 asflags_filter=$_flags_filter
2932 add_asflags $_flags $_cflags
2933 set_ccvars AS
2934
2935 probe_cc ld "$ld"
2936 ldflags_filter=$_flags_filter
2937 add_ldflags $_flags $_ldflags
2938 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2939 LD_O=${_ld_o-$LD_O}
2940 LD_LIB=${_ld_lib-$LD_LIB}
2941 LD_PATH=${_ld_path-$LD_PATH}
2942
2943 probe_cc hostld "$host_ld"
2944 host_ldflags_filter=$_flags_filter
2945 add_host_ldflags $_flags $_ldflags
2946 HOSTLD_O=${_ld_o-$HOSTLD_O}
2947
2948 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2949     probe_cc depcc "$dep_cc"
2950     CCDEP=${_DEPCMD:-$DEPCMD}
2951     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2952     DEPCCFLAGS=$_flags
2953 fi
2954
2955 if $ar 2>&1 | grep -q Microsoft; then
2956     arflags="-nologo"
2957     ar_o='-out:$@'
2958 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2959     arflags="rq"
2960     ar_o='$@'
2961 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2962     arflags='-Xany -r -c'
2963     ar_o='$@'
2964 else
2965     arflags="rc"
2966     ar_o='$@'
2967 fi
2968
2969 add_cflags $extra_cflags
2970 add_asflags $extra_cflags
2971
2972 if test -n "$sysroot"; then
2973     case "$cc_type" in
2974         gcc|llvm_gcc|clang)
2975             add_cppflags --sysroot="$sysroot"
2976             add_ldflags --sysroot="$sysroot"
2977         ;;
2978         tms470)
2979             add_cppflags -I"$sysinclude"
2980             add_ldflags  --sysroot="$sysroot"
2981         ;;
2982     esac
2983 fi
2984
2985 if test "$cpu" = host; then
2986     enabled cross_compile &&
2987         die "--cpu=host makes no sense when cross-compiling."
2988
2989     case "$cc_type" in
2990         gcc|llvm_gcc)
2991             check_native(){
2992                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2993                 sed -n "/cc1.*$1=/{
2994                             s/.*$1=\\([^ ]*\\).*/\\1/
2995                             p
2996                             q
2997                         }" $TMPE
2998             }
2999             cpu=$(check_native -march || check_native -mcpu)
3000         ;;
3001     esac
3002
3003     test "${cpu:-host}" = host &&
3004         die "--cpu=host not supported with compiler $cc"
3005 fi
3006
3007 # Deal with common $arch aliases
3008 case "$arch" in
3009     aarch64|arm64)
3010         arch="aarch64"
3011     ;;
3012     arm*)
3013         arch="arm"
3014     ;;
3015     mips*|IP*)
3016         arch="mips"
3017     ;;
3018     parisc*|hppa*)
3019         arch="parisc"
3020     ;;
3021     "Power Macintosh"|ppc*|powerpc*)
3022         arch="ppc"
3023     ;;
3024     s390|s390x)
3025         arch="s390"
3026     ;;
3027     sh4|sh)
3028         arch="sh4"
3029     ;;
3030     sun4u|sparc*)
3031         arch="sparc"
3032     ;;
3033     tilegx|tile-gx)
3034         arch="tilegx"
3035     ;;
3036     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3037         arch="x86"
3038     ;;
3039 esac
3040
3041 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3042 enable $arch
3043
3044 # Add processor-specific flags
3045 if enabled aarch64; then
3046
3047     case $cpu in
3048         armv*)
3049             cpuflags="-march=$cpu"
3050         ;;
3051         *)
3052             cpuflags="-mcpu=$cpu"
3053         ;;
3054     esac
3055
3056 elif enabled alpha; then
3057
3058     cpuflags="-mcpu=$cpu"
3059
3060 elif enabled arm; then
3061
3062     check_arm_arch() {
3063         check_cpp_condition stddef.h \
3064             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3065             $cpuflags
3066     }
3067
3068     probe_arm_arch() {
3069         if   check_arm_arch 4;        then echo armv4;
3070         elif check_arm_arch 4T;       then echo armv4t;
3071         elif check_arm_arch 5;        then echo armv5;
3072         elif check_arm_arch 5E;       then echo armv5e;
3073         elif check_arm_arch 5T;       then echo armv5t;
3074         elif check_arm_arch 5TE;      then echo armv5te;
3075         elif check_arm_arch 5TEJ;     then echo armv5te;
3076         elif check_arm_arch 6;        then echo armv6;
3077         elif check_arm_arch 6J;       then echo armv6j;
3078         elif check_arm_arch 6K;       then echo armv6k;
3079         elif check_arm_arch 6Z;       then echo armv6z;
3080         elif check_arm_arch 6ZK;      then echo armv6zk;
3081         elif check_arm_arch 6T2;      then echo armv6t2;
3082         elif check_arm_arch 7;        then echo armv7;
3083         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3084         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3085         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3086         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3087         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3088         fi
3089     }
3090
3091     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3092
3093     case $cpu in
3094         armv*)
3095             cpuflags="-march=$cpu"
3096             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3097         ;;
3098         *)
3099             cpuflags="-mcpu=$cpu"
3100             case $cpu in
3101                 cortex-a*)                               subarch=armv7a  ;;
3102                 cortex-r*)                               subarch=armv7r  ;;
3103                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3104                 arm11*)                                  subarch=armv6   ;;
3105                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3106                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3107                 *)                             subarch=$(probe_arm_arch) ;;
3108             esac
3109         ;;
3110     esac
3111
3112     case "$subarch" in
3113         armv5t*)    enable fast_clz                ;;
3114         armv[6-8]*) enable fast_clz fast_unaligned ;;
3115     esac
3116
3117 elif enabled avr32; then
3118
3119     case $cpu in
3120         ap7[02]0[0-2])
3121             subarch="avr32_ap"
3122             cpuflags="-mpart=$cpu"
3123         ;;
3124         ap)
3125             subarch="avr32_ap"
3126             cpuflags="-march=$cpu"
3127         ;;
3128         uc3[ab]*)
3129             subarch="avr32_uc"
3130             cpuflags="-mcpu=$cpu"
3131         ;;
3132         uc)
3133             subarch="avr32_uc"
3134             cpuflags="-march=$cpu"
3135         ;;
3136     esac
3137
3138 elif enabled bfin; then
3139
3140     cpuflags="-mcpu=$cpu"
3141
3142 elif enabled mips; then
3143
3144     cpuflags="-march=$cpu"
3145
3146 elif enabled ppc; then
3147
3148     disable ldbrx
3149
3150     case $(tolower $cpu) in
3151         601|ppc601|powerpc601)
3152             cpuflags="-mcpu=601"
3153             disable altivec
3154         ;;
3155         603*|ppc603*|powerpc603*)
3156             cpuflags="-mcpu=603"
3157             disable altivec
3158         ;;
3159         604*|ppc604*|powerpc604*)
3160             cpuflags="-mcpu=604"
3161             disable altivec
3162         ;;
3163         g3|75*|ppc75*|powerpc75*)
3164             cpuflags="-mcpu=750"
3165             disable altivec
3166         ;;
3167         g4|745*|ppc745*|powerpc745*)
3168             cpuflags="-mcpu=7450"
3169         ;;
3170         74*|ppc74*|powerpc74*)
3171             cpuflags="-mcpu=7400"
3172         ;;
3173         g5|970|ppc970|powerpc970)
3174             cpuflags="-mcpu=970"
3175         ;;
3176         power[3-7]*)
3177             cpuflags="-mcpu=$cpu"
3178         ;;
3179         cell)
3180             cpuflags="-mcpu=cell"
3181             enable ldbrx
3182         ;;
3183         e500mc)
3184             cpuflags="-mcpu=e500mc"
3185             disable altivec
3186         ;;
3187         e500v2)
3188             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3189             disable altivec
3190             disable dcbzl
3191         ;;
3192         e500)
3193             cpuflags="-mcpu=8540 -mhard-float"
3194             disable altivec
3195             disable dcbzl
3196         ;;
3197     esac
3198
3199 elif enabled sparc; then
3200
3201     case $cpu in
3202         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3203             cpuflags="-mcpu=$cpu"
3204         ;;
3205         ultrasparc*|niagara[234])
3206             cpuflags="-mcpu=$cpu"
3207         ;;
3208     esac
3209
3210 elif enabled x86; then
3211
3212     case $cpu in
3213         i[345]86|pentium)
3214             cpuflags="-march=$cpu"
3215             disable mmx
3216         ;;
3217         # targets that do NOT support nopl and conditional mov (cmov)
3218         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3219             cpuflags="-march=$cpu"
3220             disable i686
3221         ;;
3222         # targets that do support nopl and conditional mov (cmov)
3223         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3224             cpuflags="-march=$cpu"
3225             enable i686
3226             enable fast_cmov
3227         ;;
3228         # targets that do support conditional mov but on which it's slow
3229         pentium4|pentium4m|prescott|nocona)
3230             cpuflags="-march=$cpu"
3231             enable i686
3232             disable fast_cmov
3233         ;;
3234     esac
3235
3236 fi
3237
3238 if [ "$cpu" != generic ]; then
3239     add_cflags  $cpuflags
3240     add_asflags $cpuflags
3241 fi
3242
3243 # compiler sanity check
3244 check_exec <<EOF
3245 int main(void){ return 0; }
3246 EOF
3247 if test "$?" != 0; then
3248     echo "$cc is unable to create an executable file."
3249     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3250         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3251         echo "Only do this if you know what cross compiling means."
3252     fi
3253     die "C compiler test failed."
3254 fi
3255
3256 add_cppflags -D_ISOC99_SOURCE
3257 check_cflags -std=c99
3258 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3259 #include <stdlib.h>
3260 EOF
3261 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3262 #include <stdlib.h>
3263 EOF
3264
3265 add_host_cppflags -D_ISOC99_SOURCE
3266 check_host_cflags -std=c99
3267 check_host_cflags -Wall
3268 check_host_cflags -O3
3269
3270 check_64bit(){
3271     arch32=$1
3272     arch64=$2
3273     expr=$3
3274     check_code cc "" "int test[2*($expr) - 1]" &&
3275         subarch=$arch64 || subarch=$arch32
3276 }
3277
3278 case "$arch" in
3279     aarch64|alpha|ia64)
3280         spic=$shared
3281     ;;
3282     mips)
3283         check_64bit mips mips64 '_MIPS_SIM > 1'
3284         spic=$shared
3285     ;;
3286     parisc)
3287         check_64bit parisc parisc64 'sizeof(void *) > 4'
3288         spic=$shared
3289     ;;
3290     ppc)
3291         check_64bit ppc ppc64 'sizeof(void *) > 4'
3292         spic=$shared
3293     ;;
3294     s390)
3295         check_64bit s390 s390x 'sizeof(void *) > 4'
3296         spic=$shared
3297     ;;
3298     sparc)
3299         check_64bit sparc sparc64 'sizeof(void *) > 4'
3300         spic=$shared
3301     ;;
3302     x86)
3303         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3304         if test "$subarch" = "x86_64"; then
3305             spic=$shared
3306         fi
3307     ;;
3308 esac
3309
3310 enable $subarch
3311 enabled spic && enable_weak pic
3312
3313 # OS specific
3314 case $target_os in
3315     aix)
3316         SHFLAGS=-shared
3317         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3318         enabled shared && add_ldflags -Wl,-brtl
3319         ;;
3320     haiku)
3321         prefix_default="/boot/common"
3322         network_extralibs="-lnetwork"
3323         host_libs=
3324         ;;
3325     sunos)
3326         SHFLAGS='-shared -Wl,-h,$$(@F)'
3327         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3328         network_extralibs="-lsocket -lnsl"
3329         # When using suncc to build, the Solaris linker will mark
3330         # an executable with each instruction set encountered by
3331         # the Solaris assembler.  As our libraries contain their own
3332         # guards for processor-specific code, instead suppress
3333         # generation of the HWCAPS ELF section on Solaris x86 only.
3334         enabled_all suncc x86 &&
3335             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3336             add_ldflags -Wl,-M,mapfile
3337         nm_default='nm -P -g'
3338         ;;
3339     netbsd)
3340         disable symver
3341         oss_indev_extralibs="-lossaudio"
3342         oss_outdev_extralibs="-lossaudio"
3343         ;;
3344     openbsd|bitrig)
3345         disable symver
3346         SHFLAGS='-shared'
3347         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3348         SLIB_INSTALL_LINKS=
3349         oss_indev_extralibs="-lossaudio"
3350         oss_outdev_extralibs="-lossaudio"
3351         ;;
3352     dragonfly)
3353         disable symver
3354         ;;
3355     freebsd)
3356         ;;
3357     bsd/os)
3358         add_extralibs -lpoll -lgnugetopt
3359         ;;
3360     darwin)
3361         gas="gas-preprocessor.pl $cc"
3362         enabled ppc && add_asflags -force_cpusubtype_ALL
3363         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3364         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3365         add_ldflags -Wl,-dynamic,-search_paths_first
3366         SLIBSUF=".dylib"
3367         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3368         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3369         objformat="macho"
3370         enabled x86_64 && objformat="macho64"
3371         enabled_any pic shared ||
3372             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3373         ;;
3374     mingw32*)
3375         if test $target_os = "mingw32ce"; then
3376             disable network
3377         else
3378             target_os=mingw32
3379         fi
3380         LIBTARGET=i386
3381         if enabled x86_64; then
3382             LIBTARGET="i386:x86-64"
3383         elif enabled arm; then
3384             LIBTARGET=arm-wince
3385         fi
3386         check_ldflags -Wl,--nxcompat
3387         check_ldflags -Wl,--dynamicbase
3388         shlibdir_default="$bindir_default"
3389         SLIBPREF=""
3390         SLIBSUF=".dll"
3391         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3392         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3393         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3394         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3395         SLIB_INSTALL_LINKS=
3396         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3397         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3398         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3399         objformat="win32"
3400         dlltool="${cross_prefix}dlltool"
3401         ranlib=:
3402         enable dos_paths
3403         ;;
3404     win32|win64)
3405         disable symver
3406         if enabled shared; then
3407             # Link to the import library instead of the normal static library
3408             # for shared libs.
3409             LD_LIB='%.lib'
3410             # Cannot build both shared and static libs with MSVC or icl.
3411             disable static
3412         fi
3413         shlibdir_default="$bindir_default"
3414         SLIBPREF=""
3415         SLIBSUF=".dll"
3416         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3417         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3418         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3419         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3420         SLIB_INSTALL_LINKS=
3421         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3422         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3423         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3424         objformat="win32"
3425         ranlib=:
3426         enable dos_paths
3427         ;;
3428     cygwin*)
3429         target_os=cygwin
3430         shlibdir_default="$bindir_default"
3431         SLIBPREF="cyg"
3432         SLIBSUF=".dll"
3433         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3434         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3435         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3436         SLIB_INSTALL_LINKS=
3437         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3438         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3439         objformat="win32"
3440         enable dos_paths
3441         ;;
3442     *-dos|freedos|opendos)
3443         network_extralibs="-lsocket"
3444         objformat="coff"
3445         enable dos_paths
3446         add_cppflags -U__STRICT_ANSI__
3447         ;;
3448     linux)
3449         enable dv1394
3450         ;;
3451     irix*)
3452         target_os=irix
3453         ranlib="echo ignoring ranlib"
3454         ;;
3455     os/2*)
3456         ln_s="cp -f"
3457         objformat="aout"
3458         add_cppflags -D_GNU_SOURCE
3459         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3460         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3461         LIBSUF="_s.a"
3462         SLIBPREF=""
3463         SLIBSUF=".dll"
3464         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3465         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3466         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3467             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3468             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3469             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3470             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3471             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3472         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3473             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3474         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3475         enable dos_paths
3476         ;;
3477     gnu/kfreebsd)
3478         add_cppflags -D_BSD_SOURCE
3479         ;;
3480     gnu)
3481         ;;
3482     qnx)
3483         add_cppflags -D_QNX_SOURCE
3484         network_extralibs="-lsocket"
3485         ;;
3486     symbian)
3487         SLIBSUF=".dll"
3488         enable dos_paths
3489         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3490         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3491         add_ldflags -Wl,--target1-abs,--no-undefined \
3492                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3493                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3494         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3495                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3496                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3497         ;;
3498     osf1)
3499         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3500         ;;
3501     minix)
3502         ;;
3503     plan9)
3504         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3505                      -D_REENTRANT_SOURCE        \
3506                      -D_RESEARCH_SOURCE         \
3507                      -DFD_SETSIZE=96            \
3508                      -DHAVE_SOCK_OPTS
3509         add_compat strtod.o strtod=avpriv_strtod
3510         network_extralibs='-lbsd'
3511         exeobjs=compat/plan9/main.o
3512         disable avserver
3513         cp_f='cp'
3514         ;;
3515     none)
3516         ;;
3517     *)
3518         die "Unknown OS '$target_os'."
3519         ;;
3520 esac
3521
3522 # determine libc flavour
3523
3524 probe_libc(){
3525     pfx=$1
3526     pfx_no_=${pfx%_}
3527     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3528     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3529         eval ${pfx}libc_type=uclibc
3530         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3531     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3532         eval ${pfx}libc_type=glibc
3533         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3534     # MinGW headers can be installed on Cygwin, so check for newlib first.
3535     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3536         eval ${pfx}libc_type=newlib
3537         add_${pfx}cppflags -U__STRICT_ANSI__
3538     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3539     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3540         eval ${pfx}libc_type=mingw64
3541         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3542         eval test \$${pfx_no_}cc_type = "gcc" &&
3543             add_${pfx}cppflags -D__printf__=__gnu_printf__
3544     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3545          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3546         eval ${pfx}libc_type=mingw32
3547         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3548             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3549             die "ERROR: MinGW32 runtime version must be >= 3.15."
3550         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3551         eval test \$${pfx_no_}cc_type = "gcc" &&
3552             add_${pfx}cppflags -D__printf__=__gnu_printf__
3553     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3554         eval ${pfx}libc_type=msvcrt
3555         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3556         # 0x601 by default unless something else is set by the user.
3557         # This can easily lead to us detecting functions only present
3558         # in such new versions and producing binaries requiring windows 7.0.
3559         # Therefore explicitly set the default to XP unless the user has
3560         # set something else on the command line.
3561         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3562             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3563     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3564         eval ${pfx}libc_type=klibc
3565     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3566         eval ${pfx}libc_type=bionic
3567     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3568         eval ${pfx}libc_type=solaris
3569         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3570     fi
3571 }
3572
3573 probe_libc
3574 test -n "$libc_type" && enable libc_$libc_type
3575 probe_libc host_
3576 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3577
3578 case $libc_type in
3579     bionic)
3580         add_compat strtod.o strtod=avpriv_strtod
3581         ;;
3582     msvcrt)
3583         add_compat strtod.o strtod=avpriv_strtod
3584         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3585                                      _snprintf=avpriv_snprintf  \
3586                                      vsnprintf=avpriv_vsnprintf
3587         ;;
3588 esac
3589
3590 # hacks for compiler/libc/os combinations
3591
3592 if enabled_all tms470 libc_glibc; then
3593     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3594     add_cppflags -D__USER_LABEL_PREFIX__=
3595     add_cppflags -D__builtin_memset=memset
3596     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3597     add_cflags   -pds=48    # incompatible redefinition of macro
3598 fi
3599
3600 if enabled_all ccc libc_glibc; then
3601     add_ldflags -Wl,-z,now  # calls to libots crash without this
3602 fi
3603
3604 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3605     add_cppflags '-I\$(SRC_PATH)/compat/float'
3606
3607 esc(){
3608     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3609 }
3610
3611 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3612
3613 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3614
3615 set_default $PATHS_LIST
3616 set_default nm
3617
3618 # we need to build at least one lib type
3619 if ! enabled_any static shared; then
3620     cat <<EOF
3621 At least one library type must be built.
3622 Specify --enable-static to build the static libraries or --enable-shared to
3623 build the shared libraries as well. To only build the shared libraries specify
3624 --disable-static in addition to --enable-shared.
3625 EOF
3626     exit 1;
3627 fi
3628
3629 die_license_disabled() {
3630     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3631 }
3632
3633 die_license_disabled gpl libcdio
3634 die_license_disabled gpl libx264
3635 die_license_disabled gpl libx265
3636 die_license_disabled gpl libxavs
3637 die_license_disabled gpl libxvid
3638 die_license_disabled gpl x11grab
3639
3640 die_license_disabled nonfree libfaac
3641 die_license_disabled nonfree libfdk_aac
3642 die_license_disabled nonfree openssl
3643
3644 die_license_disabled version3 libopencore_amrnb
3645 die_license_disabled version3 libopencore_amrwb
3646 die_license_disabled version3 libvo_aacenc
3647 die_license_disabled version3 libvo_amrwbenc
3648
3649 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3650
3651 disabled optimizations || check_cflags -fomit-frame-pointer
3652
3653 enable_weak_pic() {
3654     disabled pic && return
3655     enable pic
3656     add_cppflags -DPIC
3657     case "$target_os" in
3658     mingw*|cygwin*)
3659         ;;
3660     *)
3661         add_cflags -fPIC
3662         ;;
3663     esac
3664     add_asflags  -fPIC
3665 }
3666
3667 enabled pic && enable_weak_pic
3668
3669 check_cc <<EOF || die "Symbol mangling check failed."
3670 int ff_extern;
3671 EOF
3672 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3673 extern_prefix=${sym%%ff_extern*}
3674
3675 check_cc <<EOF && enable_weak inline_asm
3676 void foo(void) { __asm__ volatile ("" ::); }
3677 EOF
3678
3679 _restrict=
3680 for restrict_keyword in restrict __restrict__ __restrict; do
3681     check_cc <<EOF && _restrict=$restrict_keyword && break
3682 void foo(char * $restrict_keyword p);
3683 EOF
3684 done
3685
3686 check_cc <<EOF && enable pragma_deprecated
3687 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3688 EOF
3689
3690 check_cc <<EOF && enable attribute_packed
3691 struct { int x; } __attribute__((packed)) x;
3692 EOF
3693
3694 check_cc <<EOF && enable attribute_may_alias
3695 union { int x; } __attribute__((may_alias)) x;
3696 EOF
3697
3698 check_cc <<EOF || die "endian test failed"
3699 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3700 EOF
3701 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3702
3703 check_inline_asm inline_asm_labels '"1:\n"'
3704
3705 if enabled aarch64; then
3706     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3707     # internal assembler in clang 3.3 does not support this instruction
3708     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3709     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3710
3711     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3712
3713 elif enabled alpha; then
3714
3715     check_cflags -mieee
3716
3717 elif enabled arm; then
3718
3719     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3720     enabled thumb && check_cflags -mthumb || check_cflags -marm
3721     nogas=die
3722
3723     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3724         enable vfp_args
3725     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3726         case "${cross_prefix:-$cc}" in
3727             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3728             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3729 __asm__ (".eabi_attribute 28, 1");
3730 int main(void) { return 0; }
3731 EOF
3732         esac
3733         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3734     fi
3735
3736     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3737     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3738     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3739     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3740     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3741     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3742
3743     [ $target_os = linux ] ||
3744         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3745             $ARCH_EXT_LIST_ARM
3746
3747     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3748
3749     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3750
3751 elif enabled mips; then
3752
3753     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3754
3755 elif enabled parisc; then
3756
3757     if enabled gcc; then
3758         case $($cc -dumpversion) in
3759             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3760         esac
3761     fi
3762
3763 elif enabled ppc; then
3764
3765     enable local_aligned_8 local_aligned_16
3766
3767     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3768     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3769     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3770     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3771
3772     # AltiVec flags: The FSF version of GCC differs from the Apple version
3773     if enabled altivec; then
3774         nogas=warn
3775         check_cflags -maltivec -mabi=altivec &&
3776         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3777         check_cflags -faltivec
3778
3779         # check if our compiler supports Motorola AltiVec C API
3780         check_cc <<EOF || disable altivec
3781 $inc_altivec_h
3782 int main(void) {
3783     vector signed int v1 = (vector signed int) { 0 };
3784     vector signed int v2 = (vector signed int) { 1 };
3785     v1 = vec_add(v1, v2);
3786     return 0;
3787 }
3788 EOF
3789
3790         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3791     fi
3792
3793 elif enabled x86; then
3794
3795     check_builtin rdtsc    intrin.h   "__rdtsc()"
3796     check_builtin mm_empty mmintrin.h "_mm_empty()"
3797
3798     enable local_aligned_8 local_aligned_16
3799
3800     # check whether EBP is available on x86
3801     # As 'i' is stored on the stack, this program will crash
3802     # if the base pointer is used to access it because the
3803     # base pointer is cleared in the inline assembly code.
3804     check_exec_crash <<EOF && enable ebp_available
3805 volatile int i=0;
3806 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3807 return i;
3808 EOF
3809
3810     # check whether EBX is available on x86
3811     check_inline_asm ebx_available '""::"b"(0)' &&
3812         check_inline_asm ebx_available '"":::"%ebx"'
3813
3814     # check whether xmm clobbers are supported
3815     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3816
3817     # check whether binutils is new enough to compile SSSE3/MMXEXT
3818     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3819     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3820
3821     if ! disabled_any asm mmx yasm; then
3822         if check_cmd $yasmexe --version; then
3823             enabled x86_64 && yasm_extra="-m amd64"
3824             yasm_debug="-g dwarf2"
3825         elif check_cmd nasm -v; then
3826             yasmexe=nasm
3827             yasm_debug="-g -F dwarf"
3828             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3829         fi
3830
3831         YASMFLAGS="-f $objformat $yasm_extra"
3832         enabled pic               && append YASMFLAGS "-DPIC"
3833         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3834         case "$objformat" in
3835             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3836         esac
3837
3838         check_yasm "movbe ecx, [5]" && enable yasm ||
3839             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3840         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
3841         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
3842         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3843         check_yasm "CPU amdnop" || disable cpunop
3844     fi
3845
3846     case "$cpu" in
3847         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3848             disable fast_clz
3849         ;;
3850     esac
3851
3852 fi
3853
3854 if enabled asm; then
3855     as=${gas:=$as}
3856     check_as <<EOF && enable gnu_as || \
3857         $nogas "GNU assembler not found, install gas-preprocessor"
3858 .macro m n
3859 \n: .int 0
3860 .endm
3861 m x
3862 EOF
3863 fi
3864
3865 check_ldflags -Wl,--as-needed
3866
3867 if check_func dlopen; then
3868     ldl=
3869 elif check_func dlopen -ldl; then
3870     ldl=-ldl
3871 fi
3872
3873 if ! disabled network; then
3874     check_func getaddrinfo $network_extralibs
3875     check_func getservbyport $network_extralibs
3876     check_func inet_aton $network_extralibs
3877
3878     check_type netdb.h "struct addrinfo"
3879     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3880     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3881     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3882     check_type poll.h "struct pollfd"
3883     check_type netinet/sctp.h "struct sctp_event_subscribe"
3884     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3885     check_type netinet/in.h "struct sockaddr_in6"
3886     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3887     check_type "sys/types.h sys/socket.h" socklen_t
3888
3889     # Prefer arpa/inet.h over winsock2
3890     if check_header arpa/inet.h ; then
3891         check_func closesocket
3892     elif check_header winsock2.h ; then
3893         check_func_headers winsock2.h closesocket -lws2 &&
3894             network_extralibs="-lws2" ||
3895         { check_func_headers winsock2.h closesocket -lws2_32 &&
3896             network_extralibs="-lws2_32"; } || disable winsock2_h network
3897         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3898
3899         check_type ws2tcpip.h socklen_t
3900         check_type ws2tcpip.h "struct addrinfo"
3901         check_type ws2tcpip.h "struct group_source_req"
3902         check_type ws2tcpip.h "struct ip_mreq_source"
3903         check_type ws2tcpip.h "struct ipv6_mreq"
3904         check_type winsock2.h "struct pollfd"
3905         check_struct winsock2.h "struct sockaddr" sa_len
3906         check_type ws2tcpip.h "struct sockaddr_in6"
3907         check_type ws2tcpip.h "struct sockaddr_storage"
3908     else
3909         disable network
3910     fi
3911 fi
3912
3913 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3914 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3915 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3916 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3917
3918 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3919 check_func  ${malloc_prefix}memalign            && enable memalign
3920 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3921
3922 check_func  fcntl
3923 check_func  fork
3924 check_func  gethrtime
3925 check_func  getopt
3926 check_func  getrusage
3927 check_func  gettimeofday
3928 check_func  isatty
3929 check_func  localtime_r
3930 check_func  mach_absolute_time
3931 check_func  mkstemp
3932 check_func  mmap
3933 check_func  mprotect
3934 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3935 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3936 check_func  sched_getaffinity
3937 check_func  setrlimit
3938 check_func  strerror_r
3939 check_func  strptime
3940 check_func  sysconf
3941 check_func  sysctl
3942 check_func  usleep
3943
3944 check_func_headers io.h setmode
3945 check_func_headers stdlib.h getenv
3946
3947 check_func_headers windows.h GetProcessAffinityMask
3948 check_func_headers windows.h GetProcessTimes
3949 check_func_headers windows.h GetSystemTimeAsFileTime
3950 check_func_headers windows.h MapViewOfFile
3951 check_func_headers windows.h SetConsoleTextAttribute
3952 check_func_headers windows.h Sleep
3953 check_func_headers windows.h VirtualAlloc
3954
3955 check_header direct.h
3956 check_header dlfcn.h
3957 check_header dxva.h
3958 check_header dxva2api.h
3959 check_header io.h
3960 check_header mach/mach_time.h
3961 check_header malloc.h
3962 check_header poll.h
3963 check_header sys/mman.h
3964 check_header sys/param.h
3965 check_header sys/resource.h
3966 check_header sys/select.h
3967 check_header sys/time.h
3968 check_header sys/un.h
3969 check_header unistd.h
3970 check_header vdpau/vdpau.h
3971 check_header vdpau/vdpau_x11.h
3972 check_header VideoDecodeAcceleration/VDADecoder.h
3973 check_header windows.h
3974 check_header X11/extensions/XvMClib.h
3975
3976 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3977 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3978 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3979
3980 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3981
3982 if ! disabled w32threads && ! enabled pthreads; then
3983     check_func_headers "windows.h process.h" _beginthreadex &&
3984         enable w32threads || disable w32threads
3985 fi
3986
3987 # check for some common methods of building with pthread support
3988 # do this before the optional library checks as some of them require pthreads
3989 if ! disabled pthreads && ! enabled w32threads; then
3990     enable pthreads
3991     if check_func pthread_join -pthread; then
3992         add_cflags -pthread
3993         add_extralibs -pthread
3994     elif check_func pthread_join -pthreads; then
3995         add_cflags -pthreads
3996         add_extralibs -pthreads
3997     elif check_func pthread_join -lpthreadGC2; then
3998         add_extralibs -lpthreadGC2
3999     elif check_lib pthread.h pthread_join -lpthread; then
4000         :
4001     elif ! check_func pthread_join; then
4002         disable pthreads
4003     fi
4004 fi
4005
4006 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4007 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4008
4009 check_lib math.h sin -lm && LIBM="-lm"
4010 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4011
4012 atan2f_args=2
4013 ldexpf_args=2
4014 powf_args=2
4015
4016 for func in $MATH_FUNCS; do
4017     eval check_mathfunc $func \${${func}_args:-1}
4018 done
4019
4020 # these are off by default, so fail if requested and not available
4021 enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
4022                                { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
4023                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4024 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4025 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4026 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4027 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4028 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4029 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4030 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4031                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4032                                done || die "ERROR: libgsm not found"; }
4033 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4034 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4035 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4036 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4037 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4038 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4039                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4040 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4041 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4042 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4043 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4044 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4045 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4046 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4047 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4048 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4049 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4050 enabled libvpx            && {
4051     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4052                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4053     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
4054                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
4055     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4056     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4057 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4058 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4059 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4060                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4061                                die "ERROR: libx264 version must be >= 0.118."; }
4062 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4063                              { check_cpp_condition x265.h "X265_BUILD >= 13" ||
4064                                die "ERROR: libx265 version must be >= 13."; }
4065 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4066 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4067 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4068                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4069                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4070                                die "ERROR: openssl not found"; }
4071
4072 if enabled gnutls; then
4073     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4074     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4075 fi
4076
4077 # libdc1394 check
4078 if enabled libdc1394; then
4079     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4080         enable libdc1394_2; } ||
4081     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4082         enable libdc1394_1; } ||
4083     die "ERROR: No version of libdc1394 found "
4084 fi
4085
4086 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4087     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4088     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4089     enable sdl
4090 fi
4091
4092 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4093 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4094
4095 check_header linux/fb.h
4096 check_header linux/videodev2.h
4097 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4098
4099 check_header sys/videoio.h
4100
4101 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4102 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4103 # w32api 3.12 had it defined wrong
4104 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4105
4106 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4107 { check_header dev/bktr/ioctl_meteor.h &&
4108   check_header dev/bktr/ioctl_bt848.h; } ||
4109 { check_header machine/ioctl_meteor.h &&
4110   check_header machine/ioctl_bt848.h; } ||
4111 { check_header dev/video/meteor/ioctl_meteor.h &&
4112   check_header dev/video/bktr/ioctl_bt848.h; } ||
4113 check_header dev/ic/bt8xx.h
4114
4115 check_header sndio.h
4116 check_header sys/soundcard.h
4117 check_header soundcard.h
4118
4119 enabled_any alsa_indev alsa_outdev &&
4120     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4121
4122 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4123     check_func jack_port_get_latency_range -ljack
4124
4125 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4126
4127 if enabled libcdio; then
4128     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4129     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
4130 fi
4131
4132 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4133
4134 enabled x11grab                                           &&
4135 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4136 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4137 { enabled xlib || die "ERROR: Xlib not found"; }
4138
4139 enabled vdpau &&
4140     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4141     disable vdpau
4142
4143 enabled vdpau && enabled xlib &&
4144     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4145     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4146     enable vdpau_x11
4147
4148 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4149
4150 # add some useful compiler flags if supported
4151 check_cflags -Wdeclaration-after-statement
4152 check_cflags -Wall
4153 check_cflags -Wdisabled-optimization
4154 check_cflags -Wpointer-arith
4155 check_cflags -Wredundant-decls
4156 check_cflags -Wcast-qual
4157 check_cflags -Wwrite-strings
4158 check_cflags -Wtype-limits
4159 check_cflags -Wundef
4160 check_cflags -Wmissing-prototypes
4161 check_cflags -Wstrict-prototypes
4162 enabled extra_warnings && check_cflags -Winline
4163
4164 check_disable_warning(){
4165     warning_flag=-W${1#-Wno-}
4166     test_cflags $warning_flag && add_cflags $1
4167 }
4168
4169 check_disable_warning -Wno-parentheses
4170 check_disable_warning -Wno-switch
4171 check_disable_warning -Wno-format-zero-length
4172 check_disable_warning -Wno-pointer-sign
4173
4174 # add some linker flags
4175 check_ldflags -Wl,--warn-common
4176 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4177 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4178
4179 # add some strip flags
4180 # -wN '..@*' is more selective than -x, but not available everywhere.
4181 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4182
4183 enabled neon_clobber_test &&
4184     check_ldflags -Wl,--wrap,avcodec_open2              \
4185                   -Wl,--wrap,avcodec_decode_audio4      \
4186                   -Wl,--wrap,avcodec_decode_video2      \
4187                   -Wl,--wrap,avcodec_decode_subtitle2   \
4188                   -Wl,--wrap,avcodec_encode_audio2      \
4189                   -Wl,--wrap,avcodec_encode_video2      \
4190                   -Wl,--wrap,avcodec_encode_subtitle    \
4191                   -Wl,--wrap,avresample_convert ||
4192     disable neon_clobber_test
4193
4194 enabled xmm_clobber_test &&
4195     check_ldflags -Wl,--wrap,avcodec_open2              \
4196                   -Wl,--wrap,avcodec_decode_audio4      \
4197                   -Wl,--wrap,avcodec_decode_video2      \
4198                   -Wl,--wrap,avcodec_decode_subtitle2   \
4199                   -Wl,--wrap,avcodec_encode_audio2      \
4200                   -Wl,--wrap,avcodec_encode_video2      \
4201                   -Wl,--wrap,avcodec_encode_subtitle    \
4202                   -Wl,--wrap,avresample_convert         \
4203                   -Wl,--wrap,sws_scale ||
4204     disable xmm_clobber_test
4205
4206 echo "X{};" > $TMPV
4207 if test_ldflags -Wl,--version-script,$TMPV; then
4208     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4209     check_cc <<EOF && enable symver_asm_label
4210 void ff_foo(void) __asm__ ("av_foo@VERSION");
4211 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4212 EOF
4213     check_cc <<EOF && enable symver_gnu_asm
4214 __asm__(".symver ff_foo,av_foo@VERSION");
4215 void ff_foo(void) {}
4216 EOF
4217 fi
4218
4219 if [ -z "$optflags" ]; then
4220     if enabled small; then
4221         optflags=$cflags_size
4222     elif enabled optimizations; then
4223         optflags=$cflags_speed
4224     else
4225         optflags=$cflags_noopt
4226     fi
4227 fi
4228
4229 check_optflags(){
4230     check_cflags "$@"
4231     enabled lto && check_ldflags "$@"
4232 }
4233
4234
4235 if enabled lto; then
4236     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4237     check_cflags  -flto
4238     check_ldflags -flto $cpuflags
4239 fi
4240
4241 check_optflags $optflags
4242 check_optflags -fno-math-errno
4243 check_optflags -fno-signed-zeros
4244
4245 if enabled icc; then
4246     # Just warnings, no remarks
4247     check_cflags -w1
4248     # -wd: Disable following warnings
4249     # 144, 167, 556: -Wno-pointer-sign
4250     # 1292: attribute "foo" ignored
4251     # 1419: external declaration in primary source file
4252     # 10006: ignoring unknown option -fno-signed-zeros
4253     # 10148: ignoring unknown option -Wno-parentheses
4254     # 10156: ignoring option '-W'; no argument required
4255     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4256     # 11030: Warning unknown option --as-needed
4257     # 10156: ignoring option '-export'; no argument required
4258     check_ldflags -wd10156,11030
4259     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4260     enable ebp_available
4261     if enabled x86_32; then
4262         icc_version=$($cc -dumpversion)
4263         test ${icc_version%%.*} -ge 11 &&
4264             check_cflags -falign-stack=maintain-16-byte ||
4265             disable aligned_stack
4266     fi
4267 elif enabled ccc; then
4268     # disable some annoying warnings
4269     add_cflags -msg_disable bitnotint
4270     add_cflags -msg_disable mixfuncvoid
4271     add_cflags -msg_disable nonstandcast
4272     add_cflags -msg_disable unsupieee
4273 elif enabled gcc; then
4274     check_optflags -fno-tree-vectorize
4275     check_cflags -Werror=implicit-function-declaration
4276     check_cflags -Werror=missing-prototypes
4277     check_cflags -Werror=return-type
4278     check_cflags -Werror=declaration-after-statement
4279     check_cflags -Werror=vla
4280     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4281 elif enabled llvm_gcc; then
4282     check_cflags -mllvm -stack-alignment=16
4283 elif enabled clang; then
4284     check_cflags -mllvm -stack-alignment=16
4285     check_cflags -Qunused-arguments
4286     check_cflags -Werror=implicit-function-declaration
4287     check_cflags -Werror=missing-prototypes
4288     check_cflags -Werror=return-type
4289 elif enabled cparser; then
4290     add_cflags -Wno-missing-variable-declarations
4291     add_cflags -Wno-empty-statement
4292 elif enabled armcc; then
4293     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
4294     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
4295     # 2523: use of inline assembler is deprecated
4296     add_cflags -W${armcc_opt},--diag_suppress=2523
4297     add_cflags -W${armcc_opt},--diag_suppress=1207
4298     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4299     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4300     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4301     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4302 elif enabled tms470; then
4303     add_cflags -pds=824 -pds=837
4304     disable inline_asm
4305 elif enabled pathscale; then
4306     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4307 elif enabled_any msvc icl; then
4308     enabled x86_32 && disable aligned_stack
4309     enabled_all x86_32 debug && add_cflags -Oy-
4310     enabled debug && add_ldflags -debug
4311     enable pragma_deprecated
4312     if enabled icl; then
4313         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4314         # (correctly) on icl 13.x.
4315         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4316             add_cflags -Qansi-alias
4317         # icl will pass the inline asm tests but inline asm is currently
4318         # not supported (build will fail)
4319         disable inline_asm
4320     fi
4321 fi
4322
4323 case $as_type in
4324     clang)
4325         add_asflags -Qunused-arguments
4326     ;;
4327 esac
4328
4329 case $ld_type in
4330     clang)
4331         check_ldflags -Qunused-arguments
4332     ;;
4333 esac
4334
4335 case $target_os in
4336     osf1)
4337         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4338     ;;
4339     plan9)
4340         add_cppflags -Dmain=plan9_main
4341     ;;
4342 esac
4343
4344 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4345
4346 check_deps $CONFIG_LIST       \
4347            $CONFIG_EXTRA      \
4348            $HAVE_LIST         \
4349            $ALL_COMPONENTS    \
4350
4351 ! enabled_any memalign posix_memalign aligned_malloc &&
4352     enabled_any $need_memalign && enable memalign_hack
4353
4354 for thread in $THREADS_LIST; do
4355     if enabled $thread; then
4356         test -n "$thread_type" &&
4357             die "ERROR: Only one thread type must be selected." ||
4358             thread_type="$thread"
4359     fi
4360 done
4361
4362 echo "install prefix            $prefix"
4363 echo "source path               $source_path"
4364 echo "C compiler                $cc"
4365 echo "C library                 $libc_type"
4366 if test "$host_cc" != "$cc"; then
4367     echo "host C compiler           $host_cc"
4368     echo "host C library            $host_libc_type"
4369 fi
4370 echo "ARCH                      $arch ($cpu)"
4371 if test "$build_suffix" != ""; then
4372     echo "build suffix              $build_suffix"
4373 fi
4374 if test "$extra_version" != ""; then
4375     echo "version string suffix     $extra_version"
4376 fi
4377 echo "big-endian                ${bigendian-no}"
4378 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4379 if enabled x86; then
4380     echo "${yasmexe}                      ${yasm-no}"
4381     echo "MMX enabled               ${mmx-no}"
4382     echo "MMXEXT enabled            ${mmxext-no}"
4383     echo "3DNow! enabled            ${amd3dnow-no}"
4384     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4385     echo "SSE enabled               ${sse-no}"
4386     echo "SSSE3 enabled             ${ssse3-no}"
4387     echo "AVX enabled               ${avx-no}"
4388     echo "XOP enabled               ${xop-no}"
4389     echo "FMA3 enabled              ${fma3-no}"
4390     echo "FMA4 enabled              ${fma4-no}"
4391     echo "i686 features enabled     ${i686-no}"
4392     echo "CMOV is fast              ${fast_cmov-no}"
4393     echo "EBX available             ${ebx_available-no}"
4394     echo "EBP available             ${ebp_available-no}"
4395 fi
4396 if enabled aarch64; then
4397     echo "NEON enabled              ${neon-no}"
4398     echo "VFP enabled               ${vfp-no}"
4399 fi
4400 if enabled arm; then
4401     echo "ARMv5TE enabled           ${armv5te-no}"
4402     echo "ARMv6 enabled             ${armv6-no}"
4403     echo "ARMv6T2 enabled           ${armv6t2-no}"
4404     echo "VFP enabled               ${vfp-no}"
4405     echo "NEON enabled              ${neon-no}"
4406 fi
4407 if enabled ppc; then
4408     echo "AltiVec enabled           ${altivec-no}"
4409     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4410     echo "dcbzl available           ${dcbzl-no}"
4411 fi
4412 echo "debug symbols             ${debug-no}"
4413 echo "optimize for size         ${small-no}"
4414 echo "optimizations             ${optimizations-no}"
4415 echo "static                    ${static-no}"
4416 echo "shared                    ${shared-no}"
4417 echo "new filter support        ${avfilter-no}"
4418 echo "network support           ${network-no}"
4419 echo "threading support         ${thread_type-no}"
4420 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4421 echo "SDL support               ${sdl-no}"
4422 test -n "$random_seed" &&
4423     echo "random seed               ${random_seed}"
4424 echo
4425
4426 echo "External libraries:"
4427 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4428 echo
4429
4430 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4431     echo "Enabled ${type}s:"
4432     eval list=\$$(toupper $type)_LIST
4433     print_enabled '_*' $list | print_3_columns
4434     echo
4435 done
4436
4437 license="LGPL version 2.1 or later"
4438 if enabled nonfree; then
4439     license="nonfree and unredistributable"
4440 elif enabled gplv3; then
4441     license="GPL version 3 or later"
4442 elif enabled lgplv3; then
4443     license="LGPL version 3 or later"
4444 elif enabled gpl; then
4445     license="GPL version 2 or later"
4446 fi
4447
4448 echo "License: $license"
4449
4450 echo "Creating config.mak and config.h..."
4451
4452 test -e Makefile || echo "include $source_path/Makefile" > Makefile
4453
4454 config_files="$TMPH config.mak"
4455
4456 cat > config.mak <<EOF
4457 # Automatically generated by configure - do not modify!
4458 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
4459 prefix=$prefix
4460 LIBDIR=\$(DESTDIR)$libdir
4461 SHLIBDIR=\$(DESTDIR)$shlibdir
4462 INCDIR=\$(DESTDIR)$incdir
4463 BINDIR=\$(DESTDIR)$bindir
4464 DATADIR=\$(DESTDIR)$datadir
4465 DOCDIR=\$(DESTDIR)$docdir
4466 MANDIR=\$(DESTDIR)$mandir
4467 SRC_PATH=$source_path
4468 CC_IDENT=$cc_ident
4469 ARCH=$arch
4470 CC=$cc
4471 AS=$as
4472 LD=$ld
4473 DEPCC=$dep_cc
4474 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4475 DEPAS=$as
4476 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4477 YASM=$yasmexe
4478 DEPYASM=$yasmexe
4479 AR=$ar
4480 ARFLAGS=$arflags
4481 AR_O=$ar_o
4482 RANLIB=$ranlib
4483 STRIP=$strip
4484 LN_S=$ln_s
4485 CPPFLAGS=$CPPFLAGS
4486 CFLAGS=$CFLAGS
4487 ASFLAGS=$ASFLAGS
4488 AS_C=$AS_C
4489 AS_O=$AS_O
4490 CC_C=$CC_C
4491 CC_E=$CC_E
4492 CC_O=$CC_O
4493 LD_O=$LD_O
4494 LD_LIB=$LD_LIB
4495 LD_PATH=$LD_PATH
4496 DLLTOOL=$dlltool
4497 LDFLAGS=$LDFLAGS
4498 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4499 STRIPFLAGS=$STRIPFLAGS
4500 YASMFLAGS=$YASMFLAGS
4501 BUILDSUF=$build_suffix
4502 FULLNAME=$FULLNAME
4503 LIBPREF=$LIBPREF
4504 LIBSUF=$LIBSUF
4505 LIBNAME=$LIBNAME
4506 SLIBPREF=$SLIBPREF
4507 SLIBSUF=$SLIBSUF
4508 EXESUF=$EXESUF
4509 EXTRA_VERSION=$extra_version
4510 CCDEP=$CCDEP
4511 CCDEP_FLAGS=$CCDEP_FLAGS
4512 ASDEP=$ASDEP
4513 ASDEP_FLAGS=$ASDEP_FLAGS
4514 CC_DEPFLAGS=$CC_DEPFLAGS
4515 AS_DEPFLAGS=$AS_DEPFLAGS
4516 HOSTCC=$host_cc
4517 HOSTLD=$host_ld
4518 HOSTCFLAGS=$host_cflags
4519 HOSTCPPFLAGS=$host_cppflags
4520 HOSTEXESUF=$HOSTEXESUF
4521 HOSTLDFLAGS=$host_ldflags
4522 HOSTLIBS=$host_libs
4523 DEPHOSTCC=$host_cc
4524 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4525 HOSTCCDEP=$HOSTCCDEP
4526 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4527 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4528 HOSTCC_C=$HOSTCC_C
4529 HOSTCC_O=$HOSTCC_O
4530 HOSTLD_O=$HOSTLD_O
4531 TARGET_EXEC=$target_exec $target_exec_args
4532 TARGET_PATH=$target_path
4533 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4534 CFLAGS-avplay=$sdl_cflags
4535 ZLIB=$($ldflags_filter -lz)
4536 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4537 EXTRALIBS=$extralibs
4538 COMPAT_OBJS=$compat_objs
4539 EXEOBJS=$exeobjs
4540 INSTALL=install
4541 LIBTARGET=${LIBTARGET}
4542 SLIBNAME=${SLIBNAME}
4543 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4544 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4545 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4546 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4547 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4548 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4549 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4550 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4551 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4552 EOF
4553
4554 get_version(){
4555     lcname=lib${1}
4556     name=$(toupper $lcname)
4557     file=$source_path/$lcname/version.h
4558     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4559     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4560     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4561     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4562     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4563 }
4564
4565 map 'get_version $v' $LIBRARY_LIST
4566
4567 print_program_libs(){
4568     eval "program_libs=\$${1}_libs"
4569     eval echo "LIBS-${1}=${program_libs}" >> config.mak
4570 }
4571
4572 map 'print_program_libs $v' $PROGRAM_LIST
4573
4574 cat > $TMPH <<EOF
4575 /* Automatically generated by configure - do not modify! */
4576 #ifndef LIBAV_CONFIG_H
4577 #define LIBAV_CONFIG_H
4578 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4579 #define LIBAV_LICENSE "$(c_escape $license)"
4580 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4581 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4582 #define restrict $_restrict
4583 #define EXTERN_PREFIX "${extern_prefix}"
4584 #define EXTERN_ASM ${extern_prefix}
4585 #define SLIBSUF "$SLIBSUF"
4586 EOF
4587
4588 test -n "$malloc_prefix" &&
4589     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4590
4591 if enabled yasm; then
4592     append config_files $TMPASM
4593     printf '' >$TMPASM
4594 fi
4595
4596 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4597
4598 print_config ARCH_   "$config_files" $ARCH_LIST
4599 print_config HAVE_   "$config_files" $HAVE_LIST
4600 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4601                                      $CONFIG_EXTRA      \
4602                                      $ALL_COMPONENTS    \
4603
4604 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4605
4606 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4607 cp_if_changed $TMPH config.h
4608 touch .config
4609
4610 enabled yasm && cp_if_changed $TMPASM config.asm
4611
4612 cat > $TMPH <<EOF
4613 /* Generated by ffconf */
4614 #ifndef AVUTIL_AVCONFIG_H
4615 #define AVUTIL_AVCONFIG_H
4616 EOF
4617
4618 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4619
4620 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4621
4622 cp_if_changed $TMPH libavutil/avconfig.h
4623
4624 test -n "$WARNINGS" && printf "\n$WARNINGS"
4625
4626 # build pkg-config files
4627
4628 pkgconfig_generate(){
4629     name=$1
4630     shortname=${name#lib}${build_suffix}
4631     comment=$2
4632     version=$3
4633     libs=$4
4634     requires=$5
4635     enabled ${name#lib} || return 0
4636     mkdir -p $name
4637     cat <<EOF > $name/$name.pc
4638 prefix=$prefix
4639 exec_prefix=\${prefix}
4640 libdir=$libdir
4641 includedir=$incdir
4642
4643 Name: $name
4644 Description: $comment
4645 Version: $version
4646 Requires: $(enabled shared || echo $requires)
4647 Requires.private: $(enabled shared && echo $requires)
4648 Conflicts:
4649 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4650 Libs.private: $(enabled shared && echo $libs)
4651 Cflags: -I\${includedir}
4652 EOF
4653     cat <<EOF > $name/$name-uninstalled.pc
4654 prefix=
4655 exec_prefix=
4656 libdir=\${pcfiledir}
4657 includedir=${source_path}
4658
4659 Name: $name
4660 Description: $comment
4661 Version: $version
4662 Requires: $requires
4663 Conflicts:
4664 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4665 Cflags: -I\${includedir}
4666 EOF
4667 }
4668
4669 lavfi_libs="libavutil = $LIBAVUTIL_VERSION"
4670 enabled movie_filter    && prepend lavfi_libs "libavformat >= $LIBAVFORMAT_VERSION, libavcodec >= $LIBAVCODEC_VERSION,"
4671 enabled resample_filter && prepend lavfi_libs "libavresample >= $LIBAVRESAMPLE_VERSION,"
4672 enabled scale_filter    && prepend lavfi_libs "libswscale >= $LIBSWSCALE_VERSION,"
4673
4674 pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBM"
4675 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4676 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs" "libavcodec = $LIBAVCODEC_VERSION"
4677 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs" "libavformat = $LIBAVFORMAT_VERSION"
4678 pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs" "$lavfi_libs"
4679 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs" "libavutil = $LIBAVUTIL_VERSION"
4680 pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"      "libavutil = $LIBAVUTIL_VERSION"