dsputil: Split off HuffYUV decoding bits into their own context
[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-libbs2b         enable bs2b DSP library [no]
182   --enable-libcdio         enable audio CD grabbing with libcdio
183   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
184                            and libraw1394 [no]
185   --enable-libfaac         enable AAC encoding via libfaac [no]
186   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
187   --enable-libfreetype     enable libfreetype [no]
188   --enable-libgsm          enable GSM de/encoding via libgsm [no]
189   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
190   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
191   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
192   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
193   --enable-libopencv       enable video filtering via libopencv [no]
194   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
195   --enable-libopus         enable Opus de/encoding via libopus [no]
196   --enable-libpulse        enable Pulseaudio input via libpulse [no]
197   --enable-librtmp         enable RTMP[E] support via librtmp [no]
198   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
199   --enable-libspeex        enable Speex de/encoding via libspeex [no]
200   --enable-libtheora       enable Theora encoding via libtheora [no]
201   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
202   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
203   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
204   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
205   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
206   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
207   --enable-libwebp         enable WebP encoding via libwebp [no]
208   --enable-libx264         enable H.264 encoding via x264 [no]
209   --enable-libx265         enable HEVC encoding via x265 [no]
210   --enable-libxavs         enable AVS encoding via xavs [no]
211   --enable-libxvid         enable Xvid encoding via xvidcore,
212                            native MPEG-4/Xvid encoder exists [no]
213   --enable-openssl         enable openssl [no]
214   --enable-x11grab         enable X11 grabbing [no]
215   --enable-zlib            enable zlib [autodetect]
216
217 Toolchain options:
218   --arch=ARCH              select architecture [$arch]
219   --cpu=CPU                select the minimum required CPU (affects
220                            instruction selection, may crash on older CPUs)
221   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
222   --enable-cross-compile   assume a cross-compiler is used
223   --sysroot=PATH           root of cross-build tree
224   --sysinclude=PATH        location of cross-build system headers
225   --target-os=OS           compiler targets OS [$target_os]
226   --target-exec=CMD        command to run executables on target
227   --target-path=DIR        path to view of build directory on target
228   --target-samples=DIR     path to samples directory on target
229   --toolchain=NAME         set tool defaults according to NAME
230   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
231   --nm=NM                  use nm tool
232   --ar=AR                  use archive tool AR [$ar_default]
233   --as=AS                  use assembler AS [$as_default]
234   --cc=CC                  use C compiler CC [$cc_default]
235   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
236   --ld=LD                  use linker LD
237   --pkg-config=PKGCONF     use pkg-config PKGCONF [$pkg_config_default]
238   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
239   --host-cc=HOSTCC         use host C compiler HOSTCC
240   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
241   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
242   --host-ld=HOSTLD         use host linker HOSTLD
243   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
244   --host-libs=HLIBS        use libs HLIBS when linking for host
245   --host-os=OS             compiler host OS [$target_os]
246   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
247   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
248   --extra-libs=ELIBS       add ELIBS [$ELIBS]
249   --extra-version=STRING   version string suffix []
250   --optflags=OPTFLAGS      override optimization-related compiler flags
251   --build-suffix=SUFFIX    library name suffix []
252   --enable-pic             build position-independent code
253   --enable-thumb           compile for Thumb instruction set
254   --enable-lto             use link-time optimization
255
256 Advanced options (experts only):
257   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
258   --disable-symver         disable symbol versioning
259   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
260   --disable-safe-bitstream-reader
261                            disable buffer boundary checking in bitreaders
262                            (faster, but may crash)
263   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
264   --enable-sram            allow use of on-chip SRAM
265
266 Optimization options (experts only):
267   --disable-asm            disable all assembler optimizations
268   --disable-altivec        disable AltiVec optimizations
269   --disable-amd3dnow       disable 3DNow! optimizations
270   --disable-amd3dnowext    disable 3DNow! extended optimizations
271   --disable-mmx            disable MMX optimizations
272   --disable-mmxext         disable MMXEXT optimizations
273   --disable-sse            disable SSE optimizations
274   --disable-sse2           disable SSE2 optimizations
275   --disable-sse3           disable SSE3 optimizations
276   --disable-ssse3          disable SSSE3 optimizations
277   --disable-sse4           disable SSE4 optimizations
278   --disable-sse42          disable SSE4.2 optimizations
279   --disable-avx            disable AVX optimizations
280   --disable-xop            disable XOP optimizations
281   --disable-fma3           disable FMA3 optimizations
282   --disable-fma4           disable FMA4 optimizations
283   --disable-avx2           disable AVX2 optimizations
284   --disable-armv5te        disable armv5te optimizations
285   --disable-armv6          disable armv6 optimizations
286   --disable-armv6t2        disable armv6t2 optimizations
287   --disable-vfp            disable VFP optimizations
288   --disable-neon           disable NEON optimizations
289   --disable-inline-asm     disable use of inline assembler
290   --disable-yasm           disable use of yasm assembler
291
292 Developer options (useful when working on Libav itself):
293   --disable-debug          disable debugging symbols
294   --enable-debug=LEVEL     set the debug level [$debuglevel]
295   --disable-optimizations  disable compiler optimizations
296   --enable-extra-warnings  enable more compiler warnings
297   --samples=PATH           location of test samples for FATE, if not set use
298                            \$LIBAV_SAMPLES at make invocation time.
299   --enable-neon-clobber-test check NEON registers for clobbering (should be
300                            used only for debugging purposes)
301   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
302                            should be used only for debugging purposes)
303   --enable-random          randomly enable/disable components
304   --disable-random
305   --enable-random=LIST     randomly enable/disable specific components or
306   --disable-random=LIST    component groups. LIST is a comma-separated list
307                            of NAME[:PROB] entries where NAME is a component
308                            (group) and PROB the probability associated with
309                            NAME (default 0.5).
310   --random-seed=VALUE      seed value for --enable/disable-random
311
312 NOTE: Object files are built at the place where configure is launched.
313 EOF
314   exit 0
315 }
316
317 quotes='""'
318
319 log(){
320     echo "$@" >> $logfile
321 }
322
323 log_file(){
324     log BEGIN $1
325     pr -n -t $1 >> $logfile
326     log END $1
327 }
328
329 echolog(){
330     log "$@"
331     echo "$@"
332 }
333
334 warn(){
335     log "WARNING: $*"
336     WARNINGS="${WARNINGS}WARNING: $*\n"
337 }
338
339 die(){
340     echolog "$@"
341     cat <<EOF
342
343 If you think configure made a mistake, make sure you are using the latest
344 version from Git.  If the latest version fails, report the problem to the
345 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
346 EOF
347     if disabled logging; then
348         cat <<EOF
349 Rerun configure with logging enabled (do not use --disable-logging), and
350 include the log this produces with your report.
351 EOF
352     else
353         cat <<EOF
354 Include the log file "$logfile" produced by configure as this will help
355 solving the problem.
356 EOF
357     fi
358     exit 1
359 }
360
361 # Avoid locale weirdness, besides we really just want to translate ASCII.
362 toupper(){
363     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
364 }
365
366 tolower(){
367     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
368 }
369
370 c_escape(){
371     echo "$*" | sed 's/["\\]/\\\0/g'
372 }
373
374 sh_quote(){
375     v=$(echo "$1" | sed "s/'/'\\\\''/g")
376     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
377     echo "$v"
378 }
379
380 cleanws(){
381     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
382 }
383
384 filter(){
385     pat=$1
386     shift
387     for v; do
388         eval "case $v in $pat) echo $v ;; esac"
389     done
390 }
391
392 filter_out(){
393     pat=$1
394     shift
395     for v; do
396         eval "case $v in $pat) ;; *) echo $v ;; esac"
397     done
398 }
399
400 map(){
401     m=$1
402     shift
403     for v; do eval $m; done
404 }
405
406 add_suffix(){
407     suffix=$1
408     shift
409     for v; do echo ${v}${suffix}; done
410 }
411
412 set_all(){
413     value=$1
414     shift
415     for var in $*; do
416         eval $var=$value
417     done
418 }
419
420 set_weak(){
421     value=$1
422     shift
423     for var; do
424         eval : \${$var:=$value}
425     done
426 }
427
428 sanitize_var_name(){
429     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
430 }
431
432 set_safe(){
433     var=$1
434     shift
435     eval $(sanitize_var_name "$var")='$*'
436 }
437
438 get_safe(){
439     eval echo \$$(sanitize_var_name "$1")
440 }
441
442 pushvar(){
443     for pvar in $*; do
444         eval level=\${${pvar}_level:=0}
445         eval ${pvar}_${level}="\$$pvar"
446         eval ${pvar}_level=$(($level+1))
447     done
448 }
449
450 popvar(){
451     for pvar in $*; do
452         eval level=\${${pvar}_level:-0}
453         test $level = 0 && continue
454         eval level=$(($level-1))
455         eval $pvar="\${${pvar}_${level}}"
456         eval ${pvar}_level=$level
457         eval unset ${pvar}_${level}
458     done
459 }
460
461 enable(){
462     set_all yes $*
463 }
464
465 disable(){
466     set_all no $*
467 }
468
469 enable_weak(){
470     set_weak yes $*
471 }
472
473 disable_weak(){
474     set_weak no $*
475 }
476
477 enable_safe(){
478     for var; do
479         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
480     done
481 }
482
483 disable_safe(){
484     for var; do
485         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
486     done
487 }
488
489 do_enable_deep(){
490     for var; do
491         enabled $var && continue
492         eval sel="\$${var}_select"
493         eval sgs="\$${var}_suggest"
494         pushvar var sgs
495         enable_deep $sel
496         popvar sgs
497         enable_deep_weak $sgs
498         popvar var
499     done
500 }
501
502 enable_deep(){
503     do_enable_deep $*
504     enable $*
505 }
506
507 enable_deep_weak(){
508     for var; do
509         disabled $var && continue
510         pushvar var
511         do_enable_deep $var
512         popvar var
513         enable_weak $var
514     done
515 }
516
517 enabled(){
518     test "${1#!}" = "$1" && op== || op=!=
519     eval test "x\$${1#!}" $op "xyes"
520 }
521
522 disabled(){
523     test "${1#!}" = "$1" && op== || op=!=
524     eval test "x\$${1#!}" $op "xno"
525 }
526
527 enabled_all(){
528     for opt; do
529         enabled $opt || return 1
530     done
531 }
532
533 disabled_all(){
534     for opt; do
535         disabled $opt || return 1
536     done
537 }
538
539 enabled_any(){
540     for opt; do
541         enabled $opt && return 0
542     done
543 }
544
545 disabled_any(){
546     for opt; do
547         disabled $opt && return 0
548     done
549     return 1
550 }
551
552 set_default(){
553     for opt; do
554         eval : \${$opt:=\$${opt}_default}
555     done
556 }
557
558 is_in(){
559     value=$1
560     shift
561     for var in $*; do
562         [ $var = $value ] && return 0
563     done
564     return 1
565 }
566
567 do_check_deps(){
568     for cfg; do
569         cfg="${cfg#!}"
570         enabled ${cfg}_checking && die "Circular dependency for $cfg."
571         disabled ${cfg}_checking && continue
572         enable ${cfg}_checking
573         append allopts $cfg
574
575         eval dep_all="\$${cfg}_deps"
576         eval dep_any="\$${cfg}_deps_any"
577         eval dep_sel="\$${cfg}_select"
578         eval dep_sgs="\$${cfg}_suggest"
579         eval dep_ifa="\$${cfg}_if"
580         eval dep_ifn="\$${cfg}_if_any"
581
582         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
583         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
584         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
585
586         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
587         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
588         enabled_all  $dep_all || disable $cfg
589         enabled_any  $dep_any || disable $cfg
590         disabled_any $dep_sel && disable $cfg
591
592         if enabled $cfg; then
593             enable_deep $dep_sel
594             enable_deep_weak $dep_sgs
595         fi
596
597         disable ${cfg}_checking
598     done
599 }
600
601 check_deps(){
602     unset allopts
603
604     do_check_deps "$@"
605
606     for cfg in $allopts; do
607         enabled $cfg || continue
608         eval dep_extralibs="\$${cfg}_extralibs"
609         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
610     done
611 }
612
613 print_config(){
614     pfx=$1
615     files=$2
616     shift 2
617     map 'eval echo "$v \${$v:-no}"' "$@" |
618     awk "BEGIN { split(\"$files\", files) }
619         {
620             c = \"$pfx\" toupper(\$1);
621             v = \$2;
622             sub(/yes/, 1, v);
623             sub(/no/,  0, v);
624             for (f in files) {
625                 file = files[f];
626                 if (file ~ /\\.h\$/) {
627                     printf(\"#define %s %d\\n\", c, v) >>file;
628                 } else if (file ~ /\\.asm\$/) {
629                     printf(\"%%define %s %d\\n\", c, v) >>file;
630                 } else if (file ~ /\\.mak\$/) {
631                     n = -v ? \"\" : \"!\";
632                     printf(\"%s%s=yes\\n\", n, c) >>file;
633                 }
634             }
635         }"
636 }
637
638 print_enabled(){
639     suf=$1
640     shift
641     for v; do
642         enabled $v && printf "%s\n" ${v%$suf};
643     done
644 }
645
646 append(){
647     var=$1
648     shift
649     eval "$var=\"\$$var $*\""
650 }
651
652 prepend(){
653     var=$1
654     shift
655     eval "$var=\"$* \$$var\""
656 }
657
658 unique(){
659     var=$1
660     uniq_list=""
661     for tok in $(eval echo \$$var); do
662         uniq_list="$(filter_out $tok $uniq_list) $tok"
663     done
664     eval "$var=\"${uniq_list}\""
665 }
666
667 add_cppflags(){
668     append CPPFLAGS "$@"
669 }
670
671 add_cflags(){
672     append CFLAGS $($cflags_filter "$@")
673 }
674
675 add_asflags(){
676     append ASFLAGS $($asflags_filter "$@")
677 }
678
679 add_ldflags(){
680     append LDFLAGS $($ldflags_filter "$@")
681 }
682
683 add_stripflags(){
684     append STRIPFLAGS "$@"
685 }
686
687 add_extralibs(){
688     prepend extralibs $($ldflags_filter "$@")
689 }
690
691 add_host_cppflags(){
692     append host_cppflags "$@"
693 }
694
695 add_host_cflags(){
696     append host_cflags $($host_cflags_filter "$@")
697 }
698
699 add_host_ldflags(){
700     append host_ldflags $($host_ldflags_filter "$@")
701 }
702
703 add_compat(){
704     append compat_objs $1
705     shift
706     map 'add_cppflags -D$v' "$@"
707 }
708
709 check_cmd(){
710     log "$@"
711     "$@" >> $logfile 2>&1
712 }
713
714 cc_o(){
715     eval printf '%s\\n' $CC_O
716 }
717
718 cc_e(){
719     eval printf '%s\\n' $CC_E
720 }
721
722 check_cc(){
723     log check_cc "$@"
724     cat > $TMPC
725     log_file $TMPC
726     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
727 }
728
729 check_cpp(){
730     log check_cpp "$@"
731     cat > $TMPC
732     log_file $TMPC
733     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
734 }
735
736 as_o(){
737     eval printf '%s\\n' $AS_O
738 }
739
740 check_as(){
741     log check_as "$@"
742     cat > $TMPS
743     log_file $TMPS
744     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
745 }
746
747 check_inline_asm(){
748     log check_inline_asm "$@"
749     name="$1"
750     code="$2"
751     shift 2
752     disable $name
753     check_cc "$@" <<EOF && enable $name
754 void foo(void){ __asm__ volatile($code); }
755 EOF
756 }
757
758 check_insn(){
759     log check_insn "$@"
760     check_inline_asm ${1}_inline "\"$2\""
761     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
762 }
763
764 check_yasm(){
765     log check_yasm "$@"
766     echo "$1" > $TMPS
767     log_file $TMPS
768     shift 1
769     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
770 }
771
772 ld_o(){
773     eval printf '%s\\n' $LD_O
774 }
775
776 check_ld(){
777     log check_ld "$@"
778     flags=$(filter_out '-l*' "$@")
779     libs=$(filter '-l*' "$@")
780     check_cc $($cflags_filter $flags) || return
781     flags=$($ldflags_filter $flags)
782     libs=$($ldflags_filter $libs)
783     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
784 }
785
786 print_include(){
787     hdr=$1
788     test "${hdr%.h}" = "${hdr}" &&
789         echo "#include $hdr"    ||
790         echo "#include <$hdr>"
791 }
792
793 check_code(){
794     log check_code "$@"
795     check=$1
796     headers=$2
797     code=$3
798     shift 3
799     {
800         for hdr in $headers; do
801             print_include $hdr
802         done
803         echo "int main(void) { $code; return 0; }"
804     } | check_$check "$@"
805 }
806
807 check_cppflags(){
808     log check_cppflags "$@"
809     check_cc "$@" <<EOF && append CPPFLAGS "$@"
810 int x;
811 EOF
812 }
813
814 test_cflags(){
815     log test_cflags "$@"
816     set -- $($cflags_filter "$@")
817     check_cc "$@" <<EOF
818 int x;
819 EOF
820 }
821
822 check_cflags(){
823     log check_cflags "$@"
824     test_cflags "$@" && add_cflags "$@"
825 }
826
827 test_ldflags(){
828     log test_ldflags "$@"
829     check_ld "$@" <<EOF
830 int main(void){ return 0; }
831 EOF
832 }
833
834 check_ldflags(){
835     log check_ldflags "$@"
836     test_ldflags "$@" && add_ldflags "$@"
837 }
838
839 test_stripflags(){
840     log test_stripflags "$@"
841     # call check_cc to get a fresh TMPO
842     check_cc <<EOF
843 int main(void) { return 0; }
844 EOF
845     check_cmd $strip $STRIPFLAGS "$@" $TMPO
846 }
847
848 check_stripflags(){
849     log check_stripflags "$@"
850     test_stripflags "$@" && add_stripflags "$@"
851 }
852
853 check_header(){
854     log check_header "$@"
855     header=$1
856     shift
857     disable_safe $header
858     check_cpp "$@" <<EOF && enable_safe $header
859 #include <$header>
860 int x;
861 EOF
862 }
863
864 check_func(){
865     log check_func "$@"
866     func=$1
867     shift
868     disable $func
869     check_ld "$@" <<EOF && enable $func
870 extern int $func();
871 int main(void){ $func(); }
872 EOF
873 }
874
875 check_mathfunc(){
876     log check_mathfunc "$@"
877     func=$1
878     narg=$2
879     shift 2
880     test $narg = 2 && args="f, g" || args="f"
881     disable $func
882     check_ld "$@" <<EOF && enable $func
883 #include <math.h>
884 float foo(float f, float g) { return $func($args); }
885 int main(void){ return 0; }
886 EOF
887 }
888
889 check_func_headers(){
890     log check_func_headers "$@"
891     headers=$1
892     funcs=$2
893     shift 2
894     {
895         for hdr in $headers; do
896             print_include $hdr
897         done
898         for func in $funcs; do
899             echo "long check_$func(void) { return (long) $func; }"
900         done
901         echo "int main(void) { return 0; }"
902     } | check_ld "$@" && enable $funcs && enable_safe $headers
903 }
904
905 check_cpp_condition(){
906     log check_cpp_condition "$@"
907     header=$1
908     condition=$2
909     shift 2
910     check_cpp "$@" <<EOF
911 #include <$header>
912 #if !($condition)
913 #error "unsatisfied condition: $condition"
914 #endif
915 EOF
916 }
917
918 check_lib(){
919     log check_lib "$@"
920     header="$1"
921     func="$2"
922     shift 2
923     check_header $header && check_func $func "$@" && add_extralibs "$@"
924 }
925
926 check_lib2(){
927     log check_lib2 "$@"
928     headers="$1"
929     funcs="$2"
930     shift 2
931     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
932 }
933
934 check_pkg_config(){
935     log check_pkg_config "$@"
936     pkg="$1"
937     headers="$2"
938     funcs="$3"
939     shift 3
940     check_cmd $pkg_config --exists --print-errors $pkg || return
941     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
942     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
943     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
944         set_safe ${pkg}_cflags $pkg_cflags   &&
945         set_safe ${pkg}_libs   $pkg_libs
946 }
947
948 check_exec(){
949     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
950 }
951
952 check_exec_crash(){
953     code=$(cat)
954
955     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
956     # are safe but may not be available everywhere.  Thus we use
957     # raise(SIGTERM) instead.  The check is run in a subshell so we
958     # can redirect the "Terminated" message from the shell.  SIGBUS
959     # is not defined by standard C so it is used conditionally.
960
961     (check_exec "$@") >> $logfile 2>&1 <<EOF
962 #include <signal.h>
963 static void sighandler(int sig){
964     raise(SIGTERM);
965 }
966 int foo(void){
967     $code
968 }
969 int (*func_ptr)(void) = foo;
970 int main(void){
971     signal(SIGILL, sighandler);
972     signal(SIGFPE, sighandler);
973     signal(SIGSEGV, sighandler);
974 #ifdef SIGBUS
975     signal(SIGBUS, sighandler);
976 #endif
977     return func_ptr();
978 }
979 EOF
980 }
981
982 check_type(){
983     log check_type "$@"
984     headers=$1
985     type=$2
986     shift 2
987     disable_safe "$type"
988     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
989 }
990
991 check_struct(){
992     log check_struct "$@"
993     headers=$1
994     struct=$2
995     member=$3
996     shift 3
997     disable_safe "${struct}_${member}"
998     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
999         enable_safe "${struct}_${member}"
1000 }
1001
1002 check_builtin(){
1003     log check_builtin "$@"
1004     name=$1
1005     headers=$2
1006     builtin=$3
1007     shift 3
1008     disable "$name"
1009     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1010 }
1011
1012 check_compile_assert(){
1013     log check_compile_assert "$@"
1014     name=$1
1015     headers=$2
1016     condition=$3
1017     shift 3
1018     disable "$name"
1019     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1020 }
1021
1022 require(){
1023     name="$1"
1024     header="$2"
1025     func="$3"
1026     shift 3
1027     check_lib $header $func "$@" || die "ERROR: $name not found"
1028 }
1029
1030 require2(){
1031     name="$1"
1032     headers="$2"
1033     func="$3"
1034     shift 3
1035     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1036 }
1037
1038 require_pkg_config(){
1039     pkg="$1"
1040     check_pkg_config "$@" || die "ERROR: $pkg not found"
1041     add_cflags    $(get_safe ${pkg}_cflags)
1042     add_extralibs $(get_safe ${pkg}_libs)
1043 }
1044
1045 hostcc_e(){
1046     eval printf '%s\\n' $HOSTCC_E
1047 }
1048
1049 hostcc_o(){
1050     eval printf '%s\\n' $HOSTCC_O
1051 }
1052
1053 check_host_cc(){
1054     log check_host_cc "$@"
1055     cat > $TMPC
1056     log_file $TMPC
1057     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1058 }
1059
1060 check_host_cpp(){
1061     log check_host_cpp "$@"
1062     cat > $TMPC
1063     log_file $TMPC
1064     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1065 }
1066
1067 check_host_cppflags(){
1068     log check_host_cppflags "$@"
1069     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1070 int x;
1071 EOF
1072 }
1073
1074 check_host_cflags(){
1075     log check_host_cflags "$@"
1076     set -- $($host_cflags_filter "$@")
1077     check_host_cc "$@" <<EOF && append host_cflags "$@"
1078 int x;
1079 EOF
1080 }
1081
1082 check_host_cpp_condition(){
1083     log check_host_cpp_condition "$@"
1084     header=$1
1085     condition=$2
1086     shift 2
1087     check_host_cpp "$@" <<EOF
1088 #include <$header>
1089 #if !($condition)
1090 #error "unsatisfied condition: $condition"
1091 #endif
1092 EOF
1093 }
1094
1095 apply(){
1096     file=$1
1097     shift
1098     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1099 }
1100
1101 cp_if_changed(){
1102     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1103     mkdir -p "$(dirname $2)"
1104     $cp_f "$1" "$2"
1105 }
1106
1107 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1108 # system-dependent things.
1109
1110 COMPONENT_LIST="
1111     bsfs
1112     decoders
1113     demuxers
1114     encoders
1115     filters
1116     hwaccels
1117     indevs
1118     muxers
1119     outdevs
1120     parsers
1121     protocols
1122 "
1123
1124 EXAMPLE_LIST="
1125     avcodec_example
1126     filter_audio_example
1127     metadata_example
1128     output_example
1129     transcode_aac_example
1130 "
1131
1132 EXTERNAL_LIBRARY_LIST="
1133     avisynth
1134     bzlib
1135     frei0r
1136     gnutls
1137     libbs2b
1138     libcdio
1139     libdc1394
1140     libfaac
1141     libfdk_aac
1142     libfontconfig
1143     libfreetype
1144     libgsm
1145     libilbc
1146     libmp3lame
1147     libopencore_amrnb
1148     libopencore_amrwb
1149     libopencv
1150     libopenjpeg
1151     libopus
1152     libpulse
1153     librtmp
1154     libschroedinger
1155     libspeex
1156     libtheora
1157     libtwolame
1158     libvo_aacenc
1159     libvo_amrwbenc
1160     libvorbis
1161     libvpx
1162     libwavpack
1163     libwebp
1164     libx264
1165     libx265
1166     libxavs
1167     libxvid
1168     openssl
1169     x11grab
1170     zlib
1171 "
1172
1173 FEATURE_LIST="
1174     gray
1175     hardcoded_tables
1176     runtime_cpudetect
1177     safe_bitstream_reader
1178     shared
1179     small
1180     sram
1181     static
1182     swscale_alpha
1183 "
1184
1185 HWACCEL_LIST="
1186     dxva2
1187     vaapi
1188     vda
1189     vdpau
1190 "
1191
1192 LIBRARY_LIST="
1193     avcodec
1194     avdevice
1195     avfilter
1196     avformat
1197     avresample
1198     avutil
1199     swscale
1200 "
1201
1202 LICENSE_LIST="
1203     gpl
1204     nonfree
1205     version3
1206 "
1207
1208 PROGRAM_LIST="
1209     avconv
1210     avplay
1211     avprobe
1212     avserver
1213 "
1214
1215 SUBSYSTEM_LIST="
1216     dct
1217     doc
1218     error_resilience
1219     fft
1220     lsp
1221     lzo
1222     mdct
1223     network
1224     rdft
1225 "
1226
1227 CONFIG_LIST="
1228     $COMPONENT_LIST
1229     $EXAMPLE_LIST
1230     $EXTERNAL_LIBRARY_LIST
1231     $FEATURE_LIST
1232     $HWACCEL_LIST
1233     $LICENSE_LIST
1234     $LIBRARY_LIST
1235     $PROGRAM_LIST
1236     $SUBSYSTEM_LIST
1237     memalign_hack
1238     neon_clobber_test
1239     pic
1240     pod2man
1241     texi2html
1242     thumb
1243     xmm_clobber_test
1244 "
1245
1246 THREADS_LIST="
1247     pthreads
1248     w32threads
1249 "
1250
1251 ATOMICS_LIST="
1252     atomics_gcc
1253     atomics_suncc
1254     atomics_win32
1255 "
1256
1257 ARCH_LIST="
1258     aarch64
1259     alpha
1260     arm
1261     avr32
1262     avr32_ap
1263     avr32_uc
1264     bfin
1265     ia64
1266     m68k
1267     mips
1268     mips64
1269     parisc
1270     ppc
1271     ppc64
1272     s390
1273     sh4
1274     sparc
1275     sparc64
1276     tilegx
1277     tilepro
1278     tomi
1279     x86
1280     x86_32
1281     x86_64
1282 "
1283
1284 ARCH_EXT_LIST_ARM="
1285     armv5te
1286     armv6
1287     armv6t2
1288     armv8
1289     neon
1290     vfp
1291     vfpv3
1292 "
1293
1294 ARCH_EXT_LIST_X86_SIMD="
1295     amd3dnow
1296     amd3dnowext
1297     avx
1298     avx2
1299     fma3
1300     fma4
1301     mmx
1302     mmxext
1303     sse
1304     sse2
1305     sse3
1306     sse4
1307     sse42
1308     ssse3
1309     xop
1310 "
1311
1312 ARCH_EXT_LIST_PPC="
1313     altivec
1314     dcbzl
1315     ldbrx
1316     ppc4xx
1317 "
1318
1319 ARCH_EXT_LIST_X86="
1320     $ARCH_EXT_LIST_X86_SIMD
1321     cpunop
1322     i686
1323 "
1324
1325 ARCH_EXT_LIST="
1326     $ARCH_EXT_LIST_ARM
1327     $ARCH_EXT_LIST_PPC
1328     $ARCH_EXT_LIST_X86
1329     loongson
1330     vis
1331 "
1332
1333 ARCH_FEATURES="
1334     aligned_stack
1335     fast_64bit
1336     fast_clz
1337     fast_cmov
1338     local_aligned_8
1339     local_aligned_16
1340 "
1341
1342 BUILTIN_LIST="
1343     atomic_cas_ptr
1344     machine_rw_barrier
1345     MemoryBarrier
1346     mm_empty
1347     rdtsc
1348     sync_val_compare_and_swap
1349 "
1350 HAVE_LIST_CMDLINE="
1351     inline_asm
1352     symver
1353     yasm
1354 "
1355
1356 HAVE_LIST_PUB="
1357     bigendian
1358     fast_unaligned
1359 "
1360
1361 HEADERS_LIST="
1362     alsa_asoundlib_h
1363     altivec_h
1364     arpa_inet_h
1365     cdio_paranoia_h
1366     cdio_paranoia_paranoia_h
1367     dev_bktr_ioctl_bt848_h
1368     dev_bktr_ioctl_meteor_h
1369     dev_ic_bt8xx_h
1370     dev_video_bktr_ioctl_bt848_h
1371     dev_video_meteor_ioctl_meteor_h
1372     direct_h
1373     dlfcn_h
1374     dxva_h
1375     gsm_h
1376     io_h
1377     mach_mach_time_h
1378     machine_ioctl_bt848_h
1379     machine_ioctl_meteor_h
1380     malloc_h
1381     poll_h
1382     sndio_h
1383     soundcard_h
1384     sys_mman_h
1385     sys_param_h
1386     sys_resource_h
1387     sys_select_h
1388     sys_soundcard_h
1389     sys_time_h
1390     sys_un_h
1391     sys_videoio_h
1392     unistd_h
1393     windows_h
1394     winsock2_h
1395 "
1396
1397 MATH_FUNCS="
1398     atanf
1399     atan2f
1400     cbrtf
1401     cosf
1402     exp2
1403     exp2f
1404     expf
1405     isinf
1406     isnan
1407     ldexpf
1408     llrint
1409     llrintf
1410     log2
1411     log2f
1412     log10f
1413     lrint
1414     lrintf
1415     powf
1416     rint
1417     round
1418     roundf
1419     sinf
1420     trunc
1421     truncf
1422 "
1423
1424 SYSTEM_FUNCS="
1425     aligned_malloc
1426     closesocket
1427     CommandLineToArgvW
1428     CoTaskMemFree
1429     CryptGenRandom
1430     dlopen
1431     fcntl
1432     flt_lim
1433     fork
1434     getaddrinfo
1435     gethrtime
1436     getopt
1437     GetProcessAffinityMask
1438     GetProcessMemoryInfo
1439     GetProcessTimes
1440     getrusage
1441     getservbyport
1442     GetSystemTimeAsFileTime
1443     gettimeofday
1444     inet_aton
1445     isatty
1446     jack_port_get_latency_range
1447     localtime_r
1448     mach_absolute_time
1449     MapViewOfFile
1450     memalign
1451     mkstemp
1452     mmap
1453     mprotect
1454     nanosleep
1455     posix_memalign
1456     sched_getaffinity
1457     SetConsoleTextAttribute
1458     setmode
1459     setrlimit
1460     Sleep
1461     strerror_r
1462     strptime
1463     sysconf
1464     sysctl
1465     usleep
1466     VirtualAlloc
1467 "
1468
1469 TOOLCHAIN_FEATURES="
1470     asm_mod_q
1471     attribute_may_alias
1472     attribute_packed
1473     ebp_available
1474     ebx_available
1475     gnu_as
1476     ibm_asm
1477     inline_asm_labels
1478     pragma_deprecated
1479     symver_asm_label
1480     symver_gnu_asm
1481     vfp_args
1482     xform_asm
1483     xmm_clobbers
1484 "
1485
1486 TYPES_LIST="
1487     socklen_t
1488     struct_addrinfo
1489     struct_group_source_req
1490     struct_ip_mreq_source
1491     struct_ipv6_mreq
1492     struct_pollfd
1493     struct_rusage_ru_maxrss
1494     struct_sockaddr_in6
1495     struct_sockaddr_sa_len
1496     struct_sockaddr_storage
1497     struct_v4l2_frmivalenum_discrete
1498 "
1499
1500 HAVE_LIST="
1501     $ARCH_EXT_LIST
1502     $(add_suffix _external $ARCH_EXT_LIST)
1503     $(add_suffix _inline   $ARCH_EXT_LIST)
1504     $ARCH_FEATURES
1505     $ATOMICS_LIST
1506     $BUILTIN_LIST
1507     $HAVE_LIST_CMDLINE
1508     $HAVE_LIST_PUB
1509     $HEADERS_LIST
1510     $MATH_FUNCS
1511     $SYSTEM_FUNCS
1512     $THREADS_LIST
1513     $TOOLCHAIN_FEATURES
1514     $TYPES_LIST
1515     atomics_native
1516     dos_paths
1517     dxva2_lib
1518     libc_msvcrt
1519     libdc1394_1
1520     libdc1394_2
1521     sdl
1522     threads
1523     vdpau_x11
1524     xlib
1525 "
1526
1527 # options emitted with CONFIG_ prefix but not available on the command line
1528 CONFIG_EXTRA="
1529     aandcttables
1530     ac3dsp
1531     audio_frame_queue
1532     cabac
1533     dsputil
1534     gcrypt
1535     golomb
1536     gplv3
1537     h263dsp
1538     h264chroma
1539     h264dsp
1540     h264pred
1541     h264qpel
1542     hpeldsp
1543     huffman
1544     huffyuvdsp
1545     intrax8
1546     lgplv3
1547     lpc
1548     mpegaudio
1549     mpegaudiodsp
1550     mpegvideo
1551     mpegvideoenc
1552     nettle
1553     rangecoder
1554     riffdec
1555     riffenc
1556     rtpdec
1557     rtpenc_chain
1558     sinewin
1559     tpeldsp
1560     videodsp
1561     vp3dsp
1562 "
1563
1564 CMDLINE_SELECT="
1565     $ARCH_EXT_LIST
1566     $CONFIG_LIST
1567     $HAVE_LIST_CMDLINE
1568     $THREADS_LIST
1569     asm
1570     cross_compile
1571     debug
1572     extra_warnings
1573     logging
1574     lto
1575     optimizations
1576 "
1577
1578 PATHS_LIST="
1579     bindir
1580     datadir
1581     docdir
1582     incdir
1583     libdir
1584     mandir
1585     prefix
1586     shlibdir
1587 "
1588
1589 CMDLINE_SET="
1590     $PATHS_LIST
1591     ar
1592     arch
1593     as
1594     build_suffix
1595     cc
1596     cpu
1597     cross_prefix
1598     dep_cc
1599     extra_version
1600     host_cc
1601     host_cflags
1602     host_ld
1603     host_ldflags
1604     host_libs
1605     host_os
1606     ld
1607     logfile
1608     malloc_prefix
1609     nm
1610     optflags
1611     pkg_config
1612     pkg_config_flags
1613     random_seed
1614     samples
1615     sysinclude
1616     sysroot
1617     target_exec
1618     target_os
1619     target_path
1620     target_samples
1621     toolchain
1622 "
1623
1624 CMDLINE_APPEND="
1625     extra_cflags
1626     host_cppflags
1627 "
1628
1629 # code dependency declarations
1630
1631 # architecture extensions
1632
1633 armv5te_deps="arm"
1634 armv6_deps="arm"
1635 armv6t2_deps="arm"
1636 armv8_deps="aarch64"
1637 neon_deps_any="aarch64 arm"
1638 vfp_deps_any="aarch64 arm"
1639 vfpv3_deps="vfp"
1640
1641 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1642
1643 altivec_deps="ppc"
1644 ppc4xx_deps="ppc"
1645
1646 cpunop_deps="i686"
1647 x86_64_select="i686"
1648 x86_64_suggest="fast_cmov"
1649
1650 amd3dnow_deps="mmx"
1651 amd3dnowext_deps="amd3dnow"
1652 i686_deps="x86"
1653 mmx_deps="x86"
1654 mmxext_deps="mmx"
1655 sse_deps="mmxext"
1656 sse2_deps="sse"
1657 sse3_deps="sse2"
1658 ssse3_deps="sse3"
1659 sse4_deps="ssse3"
1660 sse42_deps="sse4"
1661 avx_deps="sse42"
1662 xop_deps="avx"
1663 fma3_deps="avx"
1664 fma4_deps="avx"
1665 avx2_deps="avx"
1666
1667 mmx_external_deps="yasm"
1668 mmx_inline_deps="inline_asm"
1669 mmx_suggest="mmx_external mmx_inline"
1670
1671 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1672     eval dep=\$${ext}_deps
1673     eval ${ext}_external_deps='"${dep}_external"'
1674     eval ${ext}_inline_deps='"${dep}_inline"'
1675     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1676 done
1677
1678 aligned_stack_if_any="aarch64 ppc x86"
1679 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1680 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1681 fast_unaligned_if_any="aarch64 ppc x86"
1682
1683 need_memalign="altivec neon sse"
1684
1685 # system capabilities
1686 log2_deps="!libc_msvcrt"
1687
1688 symver_if_any="symver_asm_label symver_gnu_asm"
1689
1690 # threading support
1691 atomics_gcc_if="sync_val_compare_and_swap"
1692 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1693 atomics_win32_if="MemoryBarrier"
1694 atomics_native_if_any="$ATOMICS_LIST"
1695 w32threads_deps="atomics_native"
1696 threads_if_any="$THREADS_LIST"
1697
1698 # subsystems
1699 dct_select="rdft"
1700 error_resilience_select="dsputil"
1701 mdct_select="fft"
1702 rdft_select="fft"
1703 mpegaudio_select="mpegaudiodsp"
1704 mpegaudiodsp_select="dct"
1705 mpegvideo_select="dsputil hpeldsp videodsp"
1706 mpegvideoenc_select="dsputil mpegvideo"
1707
1708 # decoders / encoders
1709 aac_decoder_select="mdct sinewin"
1710 aac_encoder_select="audio_frame_queue mdct sinewin"
1711 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1712 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1713 ac3_encoder_select="mdct ac3dsp dsputil"
1714 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1715 aic_decoder_select="dsputil golomb"
1716 alac_encoder_select="lpc"
1717 als_decoder_select="dsputil"
1718 amrnb_decoder_select="lsp"
1719 amrwb_decoder_select="lsp"
1720 amv_decoder_select="sp5x_decoder"
1721 ape_decoder_select="dsputil"
1722 asv1_decoder_select="dsputil"
1723 asv1_encoder_select="dsputil"
1724 asv2_decoder_select="dsputil"
1725 asv2_encoder_select="dsputil"
1726 atrac1_decoder_select="mdct sinewin"
1727 atrac3_decoder_select="mdct"
1728 atrac3p_decoder_select="mdct sinewin"
1729 bink_decoder_select="dsputil hpeldsp"
1730 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1731 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1732 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1733 cllc_decoder_select="dsputil"
1734 comfortnoise_encoder_select="lpc"
1735 cook_decoder_select="dsputil mdct sinewin"
1736 cscd_decoder_select="lzo"
1737 cscd_decoder_suggest="zlib"
1738 dca_decoder_select="mdct"
1739 dnxhd_decoder_select="dsputil"
1740 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1741 dvvideo_decoder_select="dsputil"
1742 dvvideo_encoder_select="dsputil"
1743 dxa_decoder_deps="zlib"
1744 eac3_decoder_select="ac3_decoder"
1745 eac3_encoder_select="ac3_encoder"
1746 eamad_decoder_select="aandcttables dsputil mpegvideo"
1747 eatgq_decoder_select="aandcttables dsputil"
1748 eatqi_decoder_select="aandcttables dsputil error_resilience mpegvideo"
1749 exr_decoder_deps="zlib"
1750 ffv1_decoder_select="golomb rangecoder"
1751 ffv1_encoder_select="rangecoder"
1752 ffvhuff_decoder_select="huffyuv_decoder"
1753 ffvhuff_encoder_select="huffyuv_encoder"
1754 fic_decoder_select="golomb"
1755 flac_decoder_select="golomb"
1756 flac_encoder_select="dsputil golomb lpc"
1757 flashsv_decoder_deps="zlib"
1758 flashsv_encoder_deps="zlib"
1759 flashsv2_decoder_deps="zlib"
1760 flv_decoder_select="h263_decoder"
1761 flv_encoder_select="h263_encoder"
1762 fourxm_decoder_select="dsputil"
1763 fraps_decoder_select="dsputil huffman"
1764 g2m_decoder_deps="zlib"
1765 g2m_decoder_select="dsputil"
1766 h261_decoder_select="error_resilience mpegvideo"
1767 h261_encoder_select="aandcttables mpegvideoenc"
1768 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
1769 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1770 h263i_decoder_select="h263_decoder"
1771 h263p_encoder_select="h263_encoder"
1772 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
1773 h264_decoder_suggest="error_resilience"
1774 hevc_decoder_select="cabac dsputil golomb videodsp"
1775 huffyuv_decoder_select="dsputil huffyuvdsp"
1776 huffyuv_encoder_select="dsputil huffman"
1777 iac_decoder_select="imc_decoder"
1778 imc_decoder_select="dsputil fft mdct sinewin"
1779 indeo3_decoder_select="hpeldsp"
1780 interplay_video_decoder_select="hpeldsp"
1781 jpegls_decoder_select="golomb mjpeg_decoder"
1782 jpegls_encoder_select="golomb"
1783 jv_decoder_select="dsputil"
1784 lagarith_decoder_select="huffyuvdsp"
1785 ljpeg_encoder_select="aandcttables mpegvideoenc"
1786 loco_decoder_select="golomb"
1787 mdec_decoder_select="dsputil error_resilience mpegvideo"
1788 metasound_decoder_select="lsp mdct sinewin"
1789 mimic_decoder_select="dsputil hpeldsp"
1790 mjpeg_decoder_select="dsputil hpeldsp"
1791 mjpeg_encoder_select="aandcttables mpegvideoenc"
1792 mjpegb_decoder_select="mjpeg_decoder"
1793 mlp_decoder_select="mlp_parser"
1794 motionpixels_decoder_select="dsputil"
1795 mp1_decoder_select="mpegaudio"
1796 mp1float_decoder_select="mpegaudio"
1797 mp2_decoder_select="mpegaudio"
1798 mp2float_decoder_select="mpegaudio"
1799 mp3_decoder_select="mpegaudio"
1800 mp3adu_decoder_select="mpegaudio"
1801 mp3adufloat_decoder_select="mpegaudio"
1802 mp3float_decoder_select="mpegaudio"
1803 mp3on4_decoder_select="mpegaudio"
1804 mp3on4float_decoder_select="mpegaudio"
1805 mpc7_decoder_select="dsputil mpegaudiodsp"
1806 mpc8_decoder_select="mpegaudiodsp"
1807 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1808 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1809 mpeg1video_decoder_select="error_resilience mpegvideo"
1810 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1811 mpeg2video_decoder_select="error_resilience mpegvideo"
1812 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1813 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1814 mpeg4_encoder_select="h263_encoder"
1815 msmpeg4v1_decoder_select="h263_decoder"
1816 msmpeg4v2_decoder_select="h263_decoder"
1817 msmpeg4v2_encoder_select="h263_encoder"
1818 msmpeg4v3_decoder_select="h263_decoder"
1819 msmpeg4v3_encoder_select="h263_encoder"
1820 mss2_decoder_select="error_resilience vc1_decoder"
1821 mxpeg_decoder_select="mjpeg_decoder"
1822 nellymoser_decoder_select="mdct sinewin"
1823 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1824 nuv_decoder_select="dsputil lzo"
1825 on2avc_decoder_select="mdct"
1826 opus_decoder_deps="avresample"
1827 png_decoder_deps="zlib"
1828 png_encoder_deps="zlib"
1829 png_encoder_select="dsputil"
1830 prores_decoder_select="dsputil"
1831 prores_encoder_select="dsputil"
1832 qcelp_decoder_select="lsp"
1833 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1834 ra_144_encoder_select="audio_frame_queue lpc"
1835 ralf_decoder_select="golomb"
1836 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1837 rv10_encoder_select="h263_encoder"
1838 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1839 rv20_encoder_select="h263_encoder"
1840 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1841 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1842 shorten_decoder_select="golomb"
1843 sipr_decoder_select="lsp"
1844 sp5x_decoder_select="mjpeg_decoder"
1845 svq1_decoder_select="hpeldsp"
1846 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1847 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1848 svq3_decoder_suggest="zlib"
1849 tak_decoder_select="dsputil"
1850 theora_decoder_select="vp3_decoder"
1851 thp_decoder_select="mjpeg_decoder"
1852 tiff_decoder_suggest="zlib"
1853 tiff_encoder_suggest="zlib"
1854 truehd_decoder_select="mlp_decoder"
1855 truemotion2_decoder_select="dsputil"
1856 truespeech_decoder_select="dsputil"
1857 tscc_decoder_deps="zlib"
1858 twinvq_decoder_select="mdct lsp sinewin"
1859 utvideo_decoder_select="dsputil"
1860 utvideo_encoder_select="dsputil huffman"
1861 vble_decoder_select="huffyuvdsp"
1862 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
1863 vc1image_decoder_select="vc1_decoder"
1864 vorbis_decoder_select="mdct"
1865 vorbis_encoder_select="mdct"
1866 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1867 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1868 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1869 vp6a_decoder_select="vp6_decoder"
1870 vp6f_decoder_select="vp6_decoder"
1871 vp7_decoder_select="h264pred videodsp"
1872 vp8_decoder_select="h264pred videodsp"
1873 vp9_decoder_select="videodsp"
1874 webp_decoder_select="vp8_decoder"
1875 wmapro_decoder_select="mdct sinewin"
1876 wmav1_decoder_select="mdct sinewin"
1877 wmav1_encoder_select="mdct sinewin"
1878 wmav2_decoder_select="mdct sinewin"
1879 wmav2_encoder_select="mdct sinewin"
1880 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1881 wmv1_decoder_select="h263_decoder"
1882 wmv1_encoder_select="h263_encoder"
1883 wmv2_decoder_select="h263_decoder intrax8 videodsp"
1884 wmv2_encoder_select="h263_encoder"
1885 wmv3_decoder_select="vc1_decoder"
1886 wmv3image_decoder_select="wmv3_decoder"
1887 zerocodec_decoder_deps="zlib"
1888 zlib_decoder_deps="zlib"
1889 zlib_encoder_deps="zlib"
1890 zmbv_decoder_deps="zlib"
1891 zmbv_encoder_deps="zlib"
1892
1893 # hardware accelerators
1894 dxva2_deps="dxva2api_h"
1895 vaapi_deps="va_va_h"
1896 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1897 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1898 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1899
1900 h263_vaapi_hwaccel_deps="vaapi"
1901 h263_vaapi_hwaccel_select="h263_decoder"
1902 h263_vdpau_hwaccel_deps="vdpau"
1903 h263_vdpau_hwaccel_select="h263_decoder"
1904 h264_dxva2_hwaccel_deps="dxva2"
1905 h264_dxva2_hwaccel_select="h264_decoder"
1906 h264_vaapi_hwaccel_deps="vaapi"
1907 h264_vaapi_hwaccel_select="h264_decoder"
1908 h264_vda_hwaccel_deps="vda"
1909 h264_vda_hwaccel_select="h264_decoder"
1910 h264_vda_old_hwaccel_deps="vda"
1911 h264_vda_old_hwaccel_select="h264_decoder"
1912 h264_vdpau_hwaccel_deps="vdpau"
1913 h264_vdpau_hwaccel_select="h264_decoder"
1914 mpeg1_vdpau_hwaccel_deps="vdpau"
1915 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1916 mpeg2_dxva2_hwaccel_deps="dxva2"
1917 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1918 mpeg2_vaapi_hwaccel_deps="vaapi"
1919 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1920 mpeg2_vdpau_hwaccel_deps="vdpau"
1921 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1922 mpeg4_vaapi_hwaccel_deps="vaapi"
1923 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1924 mpeg4_vdpau_hwaccel_deps="vdpau"
1925 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1926 vc1_dxva2_hwaccel_deps="dxva2"
1927 vc1_dxva2_hwaccel_select="vc1_decoder"
1928 vc1_vaapi_hwaccel_deps="vaapi"
1929 vc1_vaapi_hwaccel_select="vc1_decoder"
1930 vc1_vdpau_hwaccel_deps="vdpau"
1931 vc1_vdpau_hwaccel_select="vc1_decoder"
1932 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1933 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1934 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1935
1936 # parsers
1937 h264_parser_select="h264_decoder"
1938 mpeg4video_parser_select="error_resilience h263dsp mpegvideo"
1939 mpegvideo_parser_select="error_resilience mpegvideo"
1940 vc1_parser_select="mpegvideo"
1941
1942 # external libraries
1943 libfaac_encoder_deps="libfaac"
1944 libfaac_encoder_select="audio_frame_queue"
1945 libfdk_aac_decoder_deps="libfdk_aac"
1946 libfdk_aac_encoder_deps="libfdk_aac"
1947 libfdk_aac_encoder_select="audio_frame_queue"
1948 libgsm_decoder_deps="libgsm"
1949 libgsm_encoder_deps="libgsm"
1950 libgsm_ms_decoder_deps="libgsm"
1951 libgsm_ms_encoder_deps="libgsm"
1952 libilbc_decoder_deps="libilbc"
1953 libilbc_encoder_deps="libilbc"
1954 libmp3lame_encoder_deps="libmp3lame"
1955 libmp3lame_encoder_select="audio_frame_queue"
1956 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1957 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1958 libopencore_amrnb_encoder_select="audio_frame_queue"
1959 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1960 libopenjpeg_decoder_deps="libopenjpeg"
1961 libopenjpeg_encoder_deps="libopenjpeg"
1962 libopus_decoder_deps="libopus"
1963 libopus_encoder_deps="libopus"
1964 libopus_encoder_select="audio_frame_queue"
1965 libschroedinger_decoder_deps="libschroedinger"
1966 libschroedinger_encoder_deps="libschroedinger"
1967 libspeex_decoder_deps="libspeex"
1968 libspeex_encoder_deps="libspeex"
1969 libspeex_encoder_select="audio_frame_queue"
1970 libtheora_encoder_deps="libtheora"
1971 libtwolame_encoder_deps="libtwolame"
1972 libvo_aacenc_encoder_deps="libvo_aacenc"
1973 libvo_aacenc_encoder_select="audio_frame_queue"
1974 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1975 libvorbis_encoder_deps="libvorbis"
1976 libvorbis_encoder_select="audio_frame_queue"
1977 libvpx_vp8_decoder_deps="libvpx"
1978 libvpx_vp8_encoder_deps="libvpx"
1979 libvpx_vp9_decoder_deps="libvpx"
1980 libvpx_vp9_encoder_deps="libvpx"
1981 libwavpack_encoder_deps="libwavpack"
1982 libwebp_encoder_deps="libwebp"
1983 libx264_encoder_deps="libx264"
1984 libx265_encoder_deps="libx265"
1985 libxavs_encoder_deps="libxavs"
1986 libxvid_encoder_deps="libxvid"
1987
1988 # demuxers / muxers
1989 ac3_demuxer_select="ac3_parser"
1990 asf_demuxer_select="riffdec"
1991 asf_muxer_select="riffenc"
1992 asf_stream_muxer_select="asf_muxer"
1993 avi_demuxer_select="riffdec"
1994 avi_muxer_select="riffenc"
1995 avisynth_demuxer_deps="avisynth"
1996 avisynth_demuxer_select="riffdec"
1997 caf_demuxer_select="riffdec"
1998 dirac_demuxer_select="dirac_parser"
1999 dxa_demuxer_select="riffdec"
2000 eac3_demuxer_select="ac3_parser"
2001 f4v_muxer_select="mov_muxer"
2002 flac_demuxer_select="flac_parser"
2003 hds_muxer_select="flv_muxer"
2004 hls_muxer_select="mpegts_muxer"
2005 ipod_muxer_select="mov_muxer"
2006 ismv_muxer_select="mov_muxer"
2007 matroska_audio_muxer_select="matroska_muxer"
2008 matroska_demuxer_select="riffdec"
2009 matroska_demuxer_suggest="bzlib lzo zlib"
2010 matroska_muxer_select="riffenc"
2011 mmf_muxer_select="riffenc"
2012 mov_demuxer_select="riffdec"
2013 mov_demuxer_suggest="zlib"
2014 mov_muxer_select="riffenc rtpenc_chain"
2015 mp3_demuxer_select="mpegaudio_parser"
2016 mp4_muxer_select="mov_muxer"
2017 mpegts_muxer_select="adts_muxer latm_muxer"
2018 mpegtsraw_demuxer_select="mpegts_demuxer"
2019 mxf_d10_muxer_select="mxf_muxer"
2020 nut_muxer_select="riffenc"
2021 nuv_demuxer_select="riffdec"
2022 ogg_demuxer_select="golomb"
2023 psp_muxer_select="mov_muxer"
2024 rtp_demuxer_select="sdp_demuxer"
2025 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2026 rtsp_demuxer_select="http_protocol rtpdec"
2027 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2028 sap_demuxer_select="sdp_demuxer"
2029 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2030 sdp_demuxer_select="rtpdec"
2031 smoothstreaming_muxer_select="ismv_muxer"
2032 spdif_muxer_select="aac_parser"
2033 tak_demuxer_select="tak_parser"
2034 tg2_muxer_select="mov_muxer"
2035 tgp_muxer_select="mov_muxer"
2036 w64_demuxer_select="wav_demuxer"
2037 wav_demuxer_select="riffdec"
2038 wav_muxer_select="riffenc"
2039 webm_muxer_select="riffenc"
2040 wtv_demuxer_select="riffdec"
2041 xmv_demuxer_select="riffdec"
2042 xwma_demuxer_select="riffdec"
2043
2044 # indevs / outdevs
2045 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2046 alsa_outdev_deps="alsa_asoundlib_h"
2047 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2048 dv1394_indev_deps="dv1394"
2049 dv1394_indev_select="dv_demuxer"
2050 fbdev_indev_deps="linux_fb_h"
2051 jack_indev_deps="jack_jack_h pthreads"
2052 libcdio_indev_deps="libcdio"
2053 libdc1394_indev_deps="libdc1394"
2054 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2055 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2056 pulse_indev_deps="libpulse"
2057 sndio_indev_deps="sndio_h"
2058 sndio_outdev_deps="sndio_h"
2059 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2060 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2061 vfwcap_indev_extralibs="-lavicap32"
2062 x11grab_indev_deps="x11grab XShmCreateImage"
2063
2064 # protocols
2065 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2066 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2067 ffrtmpcrypt_protocol_select="tcp_protocol"
2068 ffrtmphttp_protocol_deps="!librtmp_protocol"
2069 ffrtmphttp_protocol_select="http_protocol"
2070 gopher_protocol_select="network"
2071 http_protocol_select="tcp_protocol"
2072 httpproxy_protocol_select="tcp_protocol"
2073 https_protocol_select="tls_protocol"
2074 librtmp_protocol_deps="librtmp"
2075 librtmpe_protocol_deps="librtmp"
2076 librtmps_protocol_deps="librtmp"
2077 librtmpt_protocol_deps="librtmp"
2078 librtmpte_protocol_deps="librtmp"
2079 mmsh_protocol_select="http_protocol"
2080 mmst_protocol_select="network"
2081 rtmp_protocol_deps="!librtmp_protocol"
2082 rtmp_protocol_select="tcp_protocol"
2083 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2084 rtmps_protocol_deps="!librtmp_protocol"
2085 rtmps_protocol_select="tls_protocol"
2086 rtmpt_protocol_select="ffrtmphttp_protocol"
2087 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2088 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2089 rtp_protocol_select="udp_protocol"
2090 sctp_protocol_deps="struct_sctp_event_subscribe"
2091 sctp_protocol_select="network"
2092 srtp_protocol_select="rtp_protocol"
2093 tcp_protocol_select="network"
2094 tls_protocol_deps_any="openssl gnutls"
2095 tls_protocol_select="tcp_protocol"
2096 udp_protocol_select="network"
2097 unix_protocol_deps="sys_un_h"
2098 unix_protocol_select="network"
2099
2100 # filters
2101 blackframe_filter_deps="gpl"
2102 boxblur_filter_deps="gpl"
2103 bs2b_filter_deps="libbs2b"
2104 cropdetect_filter_deps="gpl"
2105 delogo_filter_deps="gpl"
2106 drawtext_filter_deps="libfreetype"
2107 frei0r_filter_deps="frei0r dlopen"
2108 frei0r_filter_extralibs='$ldl'
2109 frei0r_src_filter_deps="frei0r dlopen"
2110 frei0r_src_filter_extralibs='$ldl'
2111 hqdn3d_filter_deps="gpl"
2112 interlace_filter_deps="gpl"
2113 ocv_filter_deps="libopencv"
2114 resample_filter_deps="avresample"
2115 scale_filter_deps="swscale"
2116
2117 # examples
2118 avcodec_example_deps="avcodec avutil"
2119 filter_audio_example_deps="avfilter avutil"
2120 metadata_example_deps="avformat avutil"
2121 output_example_deps="avcodec avformat avutil swscale"
2122 transcode_aac_example_deps="avcodec avformat avresample"
2123
2124 # libraries, in linking order
2125 avcodec_deps="avutil"
2126 avdevice_deps="avformat avcodec avutil"
2127 avfilter_deps="avutil"
2128 avformat_deps="avcodec avutil"
2129 avresample_deps="avutil"
2130 swscale_deps="avutil"
2131
2132 # programs
2133 avconv_deps="avcodec avfilter avformat avresample swscale"
2134 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2135                fps_filter null_filter resample_filter scale_filter
2136                setpts_filter trim_filter"
2137 avplay_deps="avcodec avformat avresample swscale sdl"
2138 avplay_libs='$sdl_libs'
2139 avplay_select="rdft"
2140 avprobe_deps="avcodec avformat"
2141 avserver_deps="avformat fork !shared"
2142 avserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2143
2144 # documentation
2145 pod2man_deps="doc"
2146 texi2html_deps="doc"
2147
2148 # default parameters
2149
2150 logfile="config.log"
2151
2152 # installation paths
2153 prefix_default="/usr/local"
2154 bindir_default='${prefix}/bin'
2155 datadir_default='${prefix}/share/avconv'
2156 docdir_default='${prefix}/share/doc/libav'
2157 incdir_default='${prefix}/include'
2158 libdir_default='${prefix}/lib'
2159 mandir_default='${prefix}/share/man'
2160 shlibdir_default="$libdir_default"
2161
2162 # toolchain
2163 ar_default="ar"
2164 cc_default="gcc"
2165 host_cc_default="gcc"
2166 cp_f="cp -f"
2167 ln_s="ln -s -f"
2168 nm_default="nm -g"
2169 objformat="elf"
2170 pkg_config_default=pkg-config
2171 ranlib="ranlib"
2172 strip="strip"
2173 yasmexe="yasm"
2174
2175 nogas=":"
2176
2177 # machine
2178 arch_default=$(uname -m)
2179 cpu="generic"
2180
2181 # OS
2182 target_os_default=$(tolower $(uname -s))
2183 host_os=$target_os_default
2184
2185 # configurable options
2186 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2187
2188 enable asm
2189 enable debug
2190 enable doc
2191 enable optimizations
2192 enable safe_bitstream_reader
2193 enable static
2194 enable swscale_alpha
2195
2196 # By default, enable only those hwaccels that have no external dependencies.
2197 enable dxva2 vdpau
2198
2199 # build settings
2200 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2201 LIBPREF="lib"
2202 LIBSUF=".a"
2203 FULLNAME='$(NAME)$(BUILDSUF)'
2204 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2205 SLIBPREF="lib"
2206 SLIBSUF=".so"
2207 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2208 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2209 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2210 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2211 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2212 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2213
2214 asflags_filter=echo
2215 cflags_filter=echo
2216 ldflags_filter=echo
2217
2218 AS_C='-c'
2219 AS_O='-o $@'
2220 CC_C='-c'
2221 CC_E='-E -o $@'
2222 CC_O='-o $@'
2223 LD_O='-o $@'
2224 LD_LIB='-l%'
2225 LD_PATH='-L'
2226 HOSTCC_C='-c'
2227 HOSTCC_E='-E -o $@'
2228 HOSTCC_O='-o $@'
2229 HOSTLD_O='-o $@'
2230
2231 host_libs='-lm'
2232 host_cflags_filter=echo
2233 host_ldflags_filter=echo
2234
2235 target_path='$(CURDIR)'
2236
2237 # since the object filename is not given with the -MM flag, the compiler
2238 # is only able to print the basename, and we must add the path ourselves
2239 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2240 DEPFLAGS='-MM'
2241
2242 # find source path
2243 if test -f configure; then
2244     source_path=.
2245 else
2246     source_path=$(cd $(dirname "$0"); pwd)
2247     echo "$source_path" | grep -q '[[:blank:]]' &&
2248         die "Out of tree builds are impossible with whitespace in source path."
2249     test -e "$source_path/config.h" &&
2250         die "Out of tree builds are impossible with config.h in source dir."
2251 fi
2252
2253 for v in "$@"; do
2254     r=${v#*=}
2255     l=${v%"$r"}
2256     r=$(sh_quote "$r")
2257     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2258 done
2259
2260 find_things(){
2261     thing=$1
2262     pattern=$2
2263     file=$source_path/$3
2264     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2265 }
2266
2267 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2268 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2269 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2270 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2271 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2272 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2273 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2274 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2275 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2276 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2277 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2278
2279 ALL_COMPONENTS="
2280     $BSF_LIST
2281     $DECODER_LIST
2282     $DEMUXER_LIST
2283     $ENCODER_LIST
2284     $FILTER_LIST
2285     $HWACCEL_LIST
2286     $INDEV_LIST
2287     $MUXER_LIST
2288     $OUTDEV_LIST
2289     $PARSER_LIST
2290     $PROTOCOL_LIST
2291 "
2292
2293 for n in $COMPONENT_LIST; do
2294     v=$(toupper ${n%s})_LIST
2295     eval enable \$$v
2296     eval ${n}_if_any="\$$v"
2297 done
2298
2299 enable $ARCH_EXT_LIST
2300
2301 die_unknown(){
2302     echo "Unknown option \"$1\"."
2303     echo "See $0 --help for available options."
2304     exit 1
2305 }
2306
2307 print_3_columns() {
2308     cat | tr ' ' '\n' | sort | pr -r -3 -t
2309 }
2310
2311 show_list() {
2312     suffix=_$1
2313     shift
2314     echo $* | sed s/$suffix//g | print_3_columns
2315     exit 0
2316 }
2317
2318 rand_list(){
2319     IFS=', '
2320     set -- $*
2321     unset IFS
2322     for thing; do
2323         comp=${thing%:*}
2324         prob=${thing#$comp}
2325         prob=${prob#:}
2326         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2327         echo "prob ${prob:-0.5}"
2328         printf '%s\n' $comp
2329     done
2330 }
2331
2332 do_random(){
2333     action=$1
2334     shift
2335     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2336     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2337 }
2338
2339 for opt do
2340     optval="${opt#*=}"
2341     case "$opt" in
2342         --extra-ldflags=*)
2343             add_ldflags $optval
2344         ;;
2345         --extra-libs=*)
2346             add_extralibs $optval
2347         ;;
2348         --disable-devices)
2349             disable $INDEV_LIST $OUTDEV_LIST
2350         ;;
2351         --enable-debug=*)
2352             debuglevel="$optval"
2353         ;;
2354         --disable-programs)
2355             disable $PROGRAM_LIST
2356         ;;
2357         --disable-everything)
2358             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2359         ;;
2360         --disable-all)
2361             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2362             disable $LIBRARY_LIST $PROGRAM_LIST doc
2363         ;;
2364         --enable-random|--disable-random)
2365             action=${opt%%-random}
2366             do_random ${action#--} $COMPONENT_LIST
2367         ;;
2368         --enable-random=*|--disable-random=*)
2369             action=${opt%%-random=*}
2370             do_random ${action#--} $optval
2371         ;;
2372         --enable-*=*|--disable-*=*)
2373             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2374             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2375             eval list=\$$(toupper $thing)_LIST
2376             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2377             $action $(filter "$name" $list)
2378         ;;
2379         --enable-?*|--disable-?*)
2380             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2381             if is_in $option $COMPONENT_LIST; then
2382                 test $action = disable && action=unset
2383                 eval $action \$$(toupper ${option%s})_LIST
2384             elif is_in $option $CMDLINE_SELECT; then
2385                 $action $option
2386             else
2387                 die_unknown $opt
2388             fi
2389         ;;
2390         --list-*)
2391             NAME="${opt#--list-}"
2392             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2393             NAME=${NAME%s}
2394             eval show_list $NAME \$$(toupper $NAME)_LIST
2395         ;;
2396         --help|-h) show_help
2397         ;;
2398         *)
2399             optname="${opt%%=*}"
2400             optname="${optname#--}"
2401             optname=$(echo "$optname" | sed 's/-/_/g')
2402             if is_in $optname $CMDLINE_SET; then
2403                 eval $optname='$optval'
2404             elif is_in $optname $CMDLINE_APPEND; then
2405                 append $optname "$optval"
2406             else
2407                 die_unknown $opt
2408             fi
2409         ;;
2410     esac
2411 done
2412
2413 disabled logging && logfile=/dev/null
2414
2415 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2416 set >> $logfile
2417
2418 test -n "$cross_prefix" && enable cross_compile
2419
2420 if enabled cross_compile; then
2421     test -n "$arch" && test -n "$target_os" ||
2422         die "Must specify target arch and OS when cross-compiling"
2423 fi
2424
2425 ar_default="${cross_prefix}${ar_default}"
2426 cc_default="${cross_prefix}${cc_default}"
2427 nm_default="${cross_prefix}${nm_default}"
2428 pkg_config_default="${cross_prefix}${pkg_config_default}"
2429 ranlib="${cross_prefix}${ranlib}"
2430 strip="${cross_prefix}${strip}"
2431
2432 sysinclude_default="${sysroot}/usr/include"
2433
2434 case "$toolchain" in
2435     clang-asan)
2436         cc_default="clang"
2437         add_cflags  -fsanitize=address
2438         add_ldflags -fsanitize=address
2439     ;;
2440     clang-tsan)
2441         cc_default="clang"
2442         add_cflags  -fsanitize=thread -pie
2443         add_ldflags -fsanitize=thread -pie
2444     ;;
2445     clang-usan)
2446         cc_default="clang"
2447         add_cflags  -fsanitize=undefined -O1
2448         add_ldflags -fsanitize=undefined
2449     ;;
2450     gcc-asan)
2451         cc_default="gcc"
2452         add_cflags  -fsanitize=address
2453         add_ldflags -fsanitize=address
2454     ;;
2455     gcc-tsan)
2456         cc_default="gcc"
2457         add_cflags  -fsanitize=thread -pie -fPIC
2458         add_ldflags -fsanitize=thread -pie -fPIC
2459     ;;
2460     gcc-usan)
2461         cc_default="gcc"
2462         add_cflags  -fsanitize=undefined
2463         add_ldflags -fsanitize=undefined
2464     ;;
2465     valgrind-massif)
2466         target_exec_default="valgrind"
2467         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2468     ;;
2469     valgrind-memcheck)
2470         target_exec_default="valgrind"
2471         target_exec_args="--track-origins=yes --leak-check=full"
2472     ;;
2473     msvc)
2474         # Check whether the current MSVC version needs the C99 converter.
2475         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2476         # support enough of C99 to build libav. Default to the new
2477         # behaviour if the regexp was unable to match anything, since this
2478         # successfully parses the version number of existing supported
2479         # versions that require the converter (MSVC 2010 and 2012).
2480         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2481         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2482             cc_default="cl"
2483         else
2484             cc_default="c99wrap cl"
2485         fi
2486         ld_default="link"
2487         nm_default="dumpbin -symbols"
2488         ar_default="lib"
2489         target_os_default="win32"
2490         # Use a relative path for TMPDIR. This makes sure all the
2491         # ffconf temp files are written with a relative path, avoiding
2492         # issues with msys/win32 path conversion for MSVC parameters
2493         # such as -Fo<file> or -out:<file>.
2494         TMPDIR=.
2495     ;;
2496     icl)
2497         cc_default="icl"
2498         ld_default="xilink"
2499         nm_default="dumpbin -symbols"
2500         ar_default="xilib"
2501         target_os_default="win32"
2502         TMPDIR=.
2503     ;;
2504     gcov)
2505         add_cflags  -fprofile-arcs -ftest-coverage
2506         add_ldflags -fprofile-arcs -ftest-coverage
2507     ;;
2508     hardened)
2509         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2510         add_ldflags -Wl,-z,relro -Wl,-z,now
2511     ;;
2512     ?*)
2513         die "Unknown toolchain $toolchain"
2514     ;;
2515 esac
2516
2517 set_default arch cc pkg_config sysinclude target_exec target_os
2518 enabled cross_compile || host_cc_default=$cc
2519 set_default host_cc
2520
2521 if ! $pkg_config --version >/dev/null 2>&1; then
2522     warn "$pkg_config not found, library detection may fail."
2523     pkg_config=false
2524 fi
2525
2526 exesuf() {
2527     case $1 in
2528         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2529     esac
2530 }
2531
2532 EXESUF=$(exesuf $target_os)
2533 HOSTEXESUF=$(exesuf $host_os)
2534
2535 # set temporary file name
2536 : ${TMPDIR:=$TEMPDIR}
2537 : ${TMPDIR:=$TMP}
2538 : ${TMPDIR:=/tmp}
2539
2540 if ! check_cmd mktemp -u XXXXXX; then
2541     # simple replacement for missing mktemp
2542     # NOT SAFE FOR GENERAL USE
2543     mktemp(){
2544         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2545     }
2546 fi
2547
2548 tmpfile(){
2549     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2550         (set -C; exec > $tmp) 2>/dev/null ||
2551         die "Unable to create temporary file in $TMPDIR."
2552     append TMPFILES $tmp
2553     eval $1=$tmp
2554 }
2555
2556 trap 'rm -f -- $TMPFILES' EXIT
2557
2558 tmpfile TMPASM .asm
2559 tmpfile TMPC   .c
2560 tmpfile TMPE   $EXESUF
2561 tmpfile TMPH   .h
2562 tmpfile TMPO   .o
2563 tmpfile TMPS   .S
2564 tmpfile TMPSH  .sh
2565 tmpfile TMPV   .ver
2566
2567 unset -f mktemp
2568
2569 chmod +x $TMPE
2570
2571 # make sure we can execute files in $TMPDIR
2572 cat > $TMPSH 2>> $logfile <<EOF
2573 #! /bin/sh
2574 EOF
2575 chmod +x $TMPSH >> $logfile 2>&1
2576 if ! $TMPSH >> $logfile 2>&1; then
2577     cat <<EOF
2578 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2579 variable to another directory and make sure that it is not mounted noexec.
2580 EOF
2581     die "Sanity test failed."
2582 fi
2583
2584 ccc_flags(){
2585     for flag; do
2586         case $flag in
2587             -std=c99)           echo -c99                       ;;
2588             -mcpu=*)            echo -arch ${flag#*=}           ;;
2589             -mieee)             echo -ieee                      ;;
2590             -O*|-fast)          echo $flag                      ;;
2591             -fno-math-errno)    echo -assume nomath_errno       ;;
2592             -g)                 echo -g3                        ;;
2593             -Wall)              echo -msg_enable level2         ;;
2594             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2595             -Wl,*)              echo $flag                      ;;
2596             -f*|-W*)                                            ;;
2597             *)                  echo $flag                      ;;
2598         esac
2599    done
2600 }
2601
2602 cparser_flags(){
2603     for flag; do
2604         case $flag in
2605             -Wno-switch)             echo -Wno-switch-enum ;;
2606             -Wno-format-zero-length) ;;
2607             -Wdisabled-optimization) ;;
2608             -Wno-pointer-sign)       echo -Wno-other ;;
2609             *)                       echo $flag ;;
2610         esac
2611     done
2612 }
2613
2614 msvc_common_flags(){
2615     for flag; do
2616         case $flag in
2617             # In addition to specifying certain flags under the compiler
2618             # specific filters, they must be specified here as well or else the
2619             # generic catch all at the bottom will print the original flag.
2620             -Wall)                ;;
2621             -std=c99)             ;;
2622             # Common flags
2623             -fomit-frame-pointer) ;;
2624             -g)                   echo -Z7 ;;
2625             -fno-math-errno)      ;;
2626             -fno-common)          ;;
2627             -fno-signed-zeros)    ;;
2628             -fPIC)                ;;
2629             -mthumb)              ;;
2630             -march=*)             ;;
2631             -lz)                  echo zlib.lib ;;
2632             -lavifil32)           echo vfw32.lib ;;
2633             -lavicap32)           echo vfw32.lib user32.lib ;;
2634             -l*)                  echo ${flag#-l}.lib ;;
2635             *)                    echo $flag ;;
2636         esac
2637     done
2638 }
2639
2640 msvc_flags(){
2641     msvc_common_flags "$@"
2642     for flag; do
2643         case $flag in
2644             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2645                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2646                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2647                                        -wd4273 ;;
2648         esac
2649     done
2650 }
2651
2652 icl_flags(){
2653     msvc_common_flags "$@"
2654     for flag; do
2655         case $flag in
2656             # Despite what Intel's documentation says -Wall, which is supported
2657             # on Windows, does enable remarks so disable them here.
2658             -Wall)                echo $flag -Qdiag-disable:remark ;;
2659             -std=c99)             echo -Qstd=c99 ;;
2660         esac
2661     done
2662 }
2663
2664 pgi_flags(){
2665     for flag; do
2666         case $flag in
2667             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2668             -fomit-frame-pointer) echo -Mnoframe ;;
2669             -g)                   echo -gopt ;;
2670             *)                    echo $flag ;;
2671         esac
2672     done
2673 }
2674
2675 suncc_flags(){
2676     for flag; do
2677         case $flag in
2678             -march=*|-mcpu=*)
2679                 case "${flag#*=}" in
2680                     native)                   echo -xtarget=native       ;;
2681                     v9|niagara)               echo -xarch=sparc          ;;
2682                     ultrasparc)               echo -xarch=sparcvis       ;;
2683                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2684                     i586|pentium)             echo -xchip=pentium        ;;
2685                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2686                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2687                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2688                     pentium4*)          echo -xtarget=pentium4           ;;
2689                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2690                     *-sse3)             echo -xarch=sse3                 ;;
2691                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2692                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2693                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2694                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2695                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2696                     k8|opteron|athlon64|athlon-fx)
2697                                                echo -xarch=sse2a         ;;
2698                     athlon*)                   echo -xarch=pentium_proa  ;;
2699                 esac
2700                 ;;
2701             -std=c99)             echo -xc99              ;;
2702             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2703             -fPIC)                echo -KPIC -xcode=pic32 ;;
2704             -W*,*)                echo $flag              ;;
2705             -f*-*|-W*|-mimpure-text)                      ;;
2706             -shared)              echo -G                 ;;
2707             *)                    echo $flag              ;;
2708         esac
2709     done
2710 }
2711
2712 tms470_flags(){
2713     for flag; do
2714         case $flag in
2715             -march=*|-mcpu=*)
2716                 case "${flag#*=}" in
2717                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2718                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2719                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2720                     armv6*|arm11*)          echo -mv=6   ;;
2721                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2722                                             echo -mv=5e  ;;
2723                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2724                 esac
2725                 ;;
2726             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2727             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2728             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2729             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2730             -msoft-float)   echo --float_support=vfplib       ;;
2731             -O[0-3]|-mf=*)  echo $flag                        ;;
2732             -g)             echo -g -mn                       ;;
2733             -pds=*)         echo $flag                        ;;
2734             -D*|-I*)        echo $flag                        ;;
2735             --gcc|--abi=*)  echo $flag                        ;;
2736             -me)            echo $flag                        ;;
2737         esac
2738     done
2739 }
2740
2741 probe_cc(){
2742     pfx=$1
2743     _cc=$2
2744
2745     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2746     unset _ld_o _ldflags _ld_lib _ld_path
2747     unset _depflags _DEPCMD _DEPFLAGS
2748     _flags_filter=echo
2749
2750     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2751         _type=llvm_gcc
2752         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2753         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2754         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2755         _cflags_speed='-O3'
2756         _cflags_size='-Os'
2757     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2758         _type=gcc
2759         gcc_version=$($_cc --version | head -n1)
2760         gcc_basever=$($_cc -dumpversion)
2761         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2762         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2763         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2764         if ! $_cc -dumpversion | grep -q '^2\.'; then
2765             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2766         fi
2767         _cflags_speed='-O3'
2768         _cflags_size='-Os'
2769     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2770         _type=icc
2771         _ident=$($_cc --version | head -n1)
2772         _depflags='-MMD'
2773         _cflags_speed='-O3'
2774         _cflags_size='-Os'
2775         _cflags_noopt='-O1'
2776     elif $_cc -v 2>&1 | grep -q xlc; then
2777         _type=xlc
2778         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2779         _cflags_speed='-O5'
2780         _cflags_size='-O5 -qcompact'
2781     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2782         _type=ccc
2783         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2784         _DEPFLAGS='-M'
2785         _cflags_speed='-fast'
2786         _cflags_size='-O1'
2787         _flags_filter=ccc_flags
2788     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2789         test -d "$sysroot" || die "No valid sysroot specified."
2790         _type=armcc
2791         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
2792         armcc_conf="$PWD/armcc.conf"
2793         $_cc --arm_linux_configure                 \
2794              --arm_linux_config_file="$armcc_conf" \
2795              --configure_sysroot="$sysroot"        \
2796              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2797              die "Error creating armcc configuration file."
2798         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2799         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2800         as_default="${cross_prefix}gcc"
2801         _depflags='-MMD'
2802         _cflags_speed='-O3'
2803         _cflags_size='-Os'
2804     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2805         _type=tms470
2806         _ident=$($_cc -version | head -n1 | tr -s ' ')
2807         _flags='--gcc --abi=eabi -me'
2808         _cc_e='-ppl -fe=$@'
2809         _cc_o='-fe=$@'
2810         _depflags='-ppa -ppd=$(@:.o=.d)'
2811         _cflags_speed='-O3 -mf=5'
2812         _cflags_size='-O3 -mf=2'
2813         _flags_filter=tms470_flags
2814     elif $_cc -v 2>&1 | grep -q clang; then
2815         _type=clang
2816         _ident=$($_cc --version | head -n1)
2817         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2818         _cflags_speed='-O3'
2819         _cflags_size='-Os'
2820     elif $_cc -V 2>&1 | grep -q Sun; then
2821         _type=suncc
2822         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2823         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2824         _DEPFLAGS='-xM1 -xc99'
2825         _ldflags='-std=c99'
2826         _cflags_speed='-O5'
2827         _cflags_size='-O5 -xspace'
2828         _flags_filter=suncc_flags
2829     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2830         _type=pathscale
2831         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2832         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2833         _cflags_speed='-O2'
2834         _cflags_size='-Os'
2835         _flags_filter='filter_out -Wdisabled-optimization'
2836     elif $_cc -v 2>&1 | grep -q Open64; then
2837         _type=open64
2838         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2839         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2840         _cflags_speed='-O2'
2841         _cflags_size='-Os'
2842         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2843     elif $_cc -V 2>&1 | grep -q Portland; then
2844         _type=pgi
2845         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2846         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2847         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2848         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2849         _cflags_noopt="-O1"
2850         _flags_filter=pgi_flags
2851     elif $_cc 2>&1 | grep -q Microsoft; then
2852         _type=msvc
2853         _ident=$($cc 2>&1 | head -n1)
2854         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2855         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2856         _cflags_speed="-O2"
2857         _cflags_size="-O1"
2858         if $_cc 2>&1 | grep -q Linker; then
2859             _ld_o='-out:$@'
2860         else
2861             _ld_o='-Fe$@'
2862         fi
2863         _cc_o='-Fo$@'
2864         _cc_e='-P -Fi$@'
2865         _flags_filter=msvc_flags
2866         _ld_lib='lib%.a'
2867         _ld_path='-libpath:'
2868         _flags='-nologo'
2869         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2870         if [ $pfx = hostcc ]; then
2871             append _cflags -Dsnprintf=_snprintf
2872         fi
2873     elif $_cc 2>&1 | grep -q Intel; then
2874         _type=icl
2875         _ident=$($cc 2>&1 | head -n1)
2876         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2877         # Not only is O3 broken on 13.x+ but it is slower on all previous
2878         # versions (tested) as well.
2879         _cflags_speed="-O2"
2880         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2881         if $_cc 2>&1 | grep -q Linker; then
2882             _ld_o='-out:$@'
2883         else
2884             _ld_o='-Fe$@'
2885         fi
2886         _cc_o='-Fo$@'
2887         _cc_e='-P'
2888         _flags_filter=icl_flags
2889         _ld_lib='lib%.a'
2890         _ld_path='-libpath:'
2891         # -Qdiag-error to make icl error when seeing certain unknown arguments
2892         _flags='-nologo -Qdiag-error:4044,10157'
2893         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2894         # with MSVC which enables it by default.
2895         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2896         if [ $pfx = hostcc ]; then
2897             append _cflags -Dsnprintf=_snprintf
2898         fi
2899     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2900         _type=cparser
2901         _ident=$($_cc --version | head -n1)
2902         _depflags='-MMD'
2903         _cflags_speed='-O4'
2904         _cflags_size='-O2'
2905         _flags_filter=cparser_flags
2906     fi
2907
2908     eval ${pfx}_type=\$_type
2909     eval ${pfx}_ident=\$_ident
2910 }
2911
2912 set_ccvars(){
2913     eval ${1}_C=\${_cc_c-\${${1}_C}}
2914     eval ${1}_E=\${_cc_e-\${${1}_E}}
2915     eval ${1}_O=\${_cc_o-\${${1}_O}}
2916
2917     if [ -n "$_depflags" ]; then
2918         eval ${1}_DEPFLAGS=\$_depflags
2919     else
2920         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2921         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2922         eval DEP${1}FLAGS=\$_flags
2923     fi
2924 }
2925
2926 probe_cc cc "$cc"
2927 cflags_filter=$_flags_filter
2928 cflags_speed=$_cflags_speed
2929 cflags_size=$_cflags_size
2930 cflags_noopt=$_cflags_noopt
2931 add_cflags $_flags $_cflags
2932 cc_ldflags=$_ldflags
2933 set_ccvars CC
2934
2935 probe_cc hostcc "$host_cc"
2936 host_cflags_filter=$_flags_filter
2937 add_host_cflags  $_flags $_cflags
2938 set_ccvars HOSTCC
2939
2940 test -n "$cc_type" && enable $cc_type ||
2941     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2942
2943 : ${as_default:=$cc}
2944 : ${dep_cc_default:=$cc}
2945 : ${ld_default:=$cc}
2946 : ${host_ld_default:=$host_cc}
2947 set_default ar as dep_cc ld host_ld
2948
2949 probe_cc as "$as"
2950 asflags_filter=$_flags_filter
2951 add_asflags $_flags $_cflags
2952 set_ccvars AS
2953
2954 probe_cc ld "$ld"
2955 ldflags_filter=$_flags_filter
2956 add_ldflags $_flags $_ldflags
2957 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2958 LD_O=${_ld_o-$LD_O}
2959 LD_LIB=${_ld_lib-$LD_LIB}
2960 LD_PATH=${_ld_path-$LD_PATH}
2961
2962 probe_cc hostld "$host_ld"
2963 host_ldflags_filter=$_flags_filter
2964 add_host_ldflags $_flags $_ldflags
2965 HOSTLD_O=${_ld_o-$HOSTLD_O}
2966
2967 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2968     probe_cc depcc "$dep_cc"
2969     CCDEP=${_DEPCMD:-$DEPCMD}
2970     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2971     DEPCCFLAGS=$_flags
2972 fi
2973
2974 if $ar 2>&1 | grep -q Microsoft; then
2975     arflags="-nologo"
2976     ar_o='-out:$@'
2977 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2978     arflags="rq"
2979     ar_o='$@'
2980 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2981     arflags='-Xany -r -c'
2982     ar_o='$@'
2983 else
2984     arflags="rc"
2985     ar_o='$@'
2986 fi
2987
2988 add_cflags $extra_cflags
2989 add_asflags $extra_cflags
2990
2991 if test -n "$sysroot"; then
2992     case "$cc_type" in
2993         gcc|llvm_gcc|clang)
2994             add_cppflags --sysroot="$sysroot"
2995             add_ldflags --sysroot="$sysroot"
2996         ;;
2997         tms470)
2998             add_cppflags -I"$sysinclude"
2999             add_ldflags  --sysroot="$sysroot"
3000         ;;
3001     esac
3002 fi
3003
3004 if test "$cpu" = host; then
3005     enabled cross_compile &&
3006         die "--cpu=host makes no sense when cross-compiling."
3007
3008     case "$cc_type" in
3009         gcc|llvm_gcc)
3010             check_native(){
3011                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3012                 sed -n "/cc1.*$1=/{
3013                             s/.*$1=\\([^ ]*\\).*/\\1/
3014                             p
3015                             q
3016                         }" $TMPE
3017             }
3018             cpu=$(check_native -march || check_native -mcpu)
3019         ;;
3020     esac
3021
3022     test "${cpu:-host}" = host &&
3023         die "--cpu=host not supported with compiler $cc"
3024 fi
3025
3026 # Deal with common $arch aliases
3027 case "$arch" in
3028     aarch64|arm64)
3029         arch="aarch64"
3030     ;;
3031     arm*)
3032         arch="arm"
3033     ;;
3034     mips*|IP*)
3035         arch="mips"
3036     ;;
3037     parisc*|hppa*)
3038         arch="parisc"
3039     ;;
3040     "Power Macintosh"|ppc*|powerpc*)
3041         arch="ppc"
3042     ;;
3043     s390|s390x)
3044         arch="s390"
3045     ;;
3046     sh4|sh)
3047         arch="sh4"
3048     ;;
3049     sun4u|sparc*)
3050         arch="sparc"
3051     ;;
3052     tilegx|tile-gx)
3053         arch="tilegx"
3054     ;;
3055     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3056         arch="x86"
3057     ;;
3058 esac
3059
3060 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3061 enable $arch
3062
3063 # Add processor-specific flags
3064 if enabled aarch64; then
3065
3066     case $cpu in
3067         armv*)
3068             cpuflags="-march=$cpu"
3069         ;;
3070         *)
3071             cpuflags="-mcpu=$cpu"
3072         ;;
3073     esac
3074
3075 elif enabled alpha; then
3076
3077     cpuflags="-mcpu=$cpu"
3078
3079 elif enabled arm; then
3080
3081     check_arm_arch() {
3082         check_cpp_condition stddef.h \
3083             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3084             $cpuflags
3085     }
3086
3087     probe_arm_arch() {
3088         if   check_arm_arch 4;        then echo armv4;
3089         elif check_arm_arch 4T;       then echo armv4t;
3090         elif check_arm_arch 5;        then echo armv5;
3091         elif check_arm_arch 5E;       then echo armv5e;
3092         elif check_arm_arch 5T;       then echo armv5t;
3093         elif check_arm_arch 5TE;      then echo armv5te;
3094         elif check_arm_arch 5TEJ;     then echo armv5te;
3095         elif check_arm_arch 6;        then echo armv6;
3096         elif check_arm_arch 6J;       then echo armv6j;
3097         elif check_arm_arch 6K;       then echo armv6k;
3098         elif check_arm_arch 6Z;       then echo armv6z;
3099         elif check_arm_arch 6ZK;      then echo armv6zk;
3100         elif check_arm_arch 6T2;      then echo armv6t2;
3101         elif check_arm_arch 7;        then echo armv7;
3102         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3103         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3104         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3105         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3106         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3107         fi
3108     }
3109
3110     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3111
3112     case $cpu in
3113         armv*)
3114             cpuflags="-march=$cpu"
3115             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3116         ;;
3117         *)
3118             cpuflags="-mcpu=$cpu"
3119             case $cpu in
3120                 cortex-a*)                               subarch=armv7a  ;;
3121                 cortex-r*)                               subarch=armv7r  ;;
3122                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3123                 arm11*)                                  subarch=armv6   ;;
3124                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3125                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3126                 *)                             subarch=$(probe_arm_arch) ;;
3127             esac
3128         ;;
3129     esac
3130
3131     case "$subarch" in
3132         armv5t*)    enable fast_clz                ;;
3133         armv[6-8]*) enable fast_clz fast_unaligned ;;
3134     esac
3135
3136 elif enabled avr32; then
3137
3138     case $cpu in
3139         ap7[02]0[0-2])
3140             subarch="avr32_ap"
3141             cpuflags="-mpart=$cpu"
3142         ;;
3143         ap)
3144             subarch="avr32_ap"
3145             cpuflags="-march=$cpu"
3146         ;;
3147         uc3[ab]*)
3148             subarch="avr32_uc"
3149             cpuflags="-mcpu=$cpu"
3150         ;;
3151         uc)
3152             subarch="avr32_uc"
3153             cpuflags="-march=$cpu"
3154         ;;
3155     esac
3156
3157 elif enabled bfin; then
3158
3159     cpuflags="-mcpu=$cpu"
3160
3161 elif enabled mips; then
3162
3163     cpuflags="-march=$cpu"
3164
3165 elif enabled ppc; then
3166
3167     disable ldbrx
3168
3169     case $(tolower $cpu) in
3170         601|ppc601|powerpc601)
3171             cpuflags="-mcpu=601"
3172             disable altivec
3173         ;;
3174         603*|ppc603*|powerpc603*)
3175             cpuflags="-mcpu=603"
3176             disable altivec
3177         ;;
3178         604*|ppc604*|powerpc604*)
3179             cpuflags="-mcpu=604"
3180             disable altivec
3181         ;;
3182         g3|75*|ppc75*|powerpc75*)
3183             cpuflags="-mcpu=750"
3184             disable altivec
3185         ;;
3186         g4|745*|ppc745*|powerpc745*)
3187             cpuflags="-mcpu=7450"
3188         ;;
3189         74*|ppc74*|powerpc74*)
3190             cpuflags="-mcpu=7400"
3191         ;;
3192         g5|970|ppc970|powerpc970)
3193             cpuflags="-mcpu=970"
3194         ;;
3195         power[3-7]*)
3196             cpuflags="-mcpu=$cpu"
3197         ;;
3198         cell)
3199             cpuflags="-mcpu=cell"
3200             enable ldbrx
3201         ;;
3202         e500mc)
3203             cpuflags="-mcpu=e500mc"
3204             disable altivec
3205         ;;
3206         e500v2)
3207             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3208             disable altivec
3209             disable dcbzl
3210         ;;
3211         e500)
3212             cpuflags="-mcpu=8540 -mhard-float"
3213             disable altivec
3214             disable dcbzl
3215         ;;
3216     esac
3217
3218 elif enabled sparc; then
3219
3220     case $cpu in
3221         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3222             cpuflags="-mcpu=$cpu"
3223         ;;
3224         ultrasparc*|niagara[234])
3225             cpuflags="-mcpu=$cpu"
3226         ;;
3227     esac
3228
3229 elif enabled x86; then
3230
3231     case $cpu in
3232         i[345]86|pentium)
3233             cpuflags="-march=$cpu"
3234             disable mmx
3235         ;;
3236         # targets that do NOT support nopl and conditional mov (cmov)
3237         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3238             cpuflags="-march=$cpu"
3239             disable i686
3240         ;;
3241         # targets that do support nopl and conditional mov (cmov)
3242         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3243             cpuflags="-march=$cpu"
3244             enable i686
3245             enable fast_cmov
3246         ;;
3247         # targets that do support conditional mov but on which it's slow
3248         pentium4|pentium4m|prescott|nocona)
3249             cpuflags="-march=$cpu"
3250             enable i686
3251             disable fast_cmov
3252         ;;
3253     esac
3254
3255 fi
3256
3257 if [ "$cpu" != generic ]; then
3258     add_cflags  $cpuflags
3259     add_asflags $cpuflags
3260 fi
3261
3262 # compiler sanity check
3263 check_exec <<EOF
3264 int main(void){ return 0; }
3265 EOF
3266 if test "$?" != 0; then
3267     echo "$cc is unable to create an executable file."
3268     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3269         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3270         echo "Only do this if you know what cross compiling means."
3271     fi
3272     die "C compiler test failed."
3273 fi
3274
3275 add_cppflags -D_ISOC99_SOURCE
3276 check_cflags -std=c99
3277 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3278 #include <stdlib.h>
3279 EOF
3280 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3281 #include <stdlib.h>
3282 EOF
3283
3284 add_host_cppflags -D_ISOC99_SOURCE
3285 check_host_cflags -std=c99
3286 check_host_cflags -Wall
3287 check_host_cflags -O3
3288
3289 check_64bit(){
3290     arch32=$1
3291     arch64=$2
3292     expr=$3
3293     check_code cc "" "int test[2*($expr) - 1]" &&
3294         subarch=$arch64 || subarch=$arch32
3295 }
3296
3297 case "$arch" in
3298     aarch64|alpha|ia64)
3299         spic=$shared
3300     ;;
3301     mips)
3302         check_64bit mips mips64 '_MIPS_SIM > 1'
3303         spic=$shared
3304     ;;
3305     parisc)
3306         check_64bit parisc parisc64 'sizeof(void *) > 4'
3307         spic=$shared
3308     ;;
3309     ppc)
3310         check_64bit ppc ppc64 'sizeof(void *) > 4'
3311         spic=$shared
3312     ;;
3313     s390)
3314         check_64bit s390 s390x 'sizeof(void *) > 4'
3315         spic=$shared
3316     ;;
3317     sparc)
3318         check_64bit sparc sparc64 'sizeof(void *) > 4'
3319         spic=$shared
3320     ;;
3321     x86)
3322         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3323         if test "$subarch" = "x86_64"; then
3324             spic=$shared
3325         fi
3326     ;;
3327 esac
3328
3329 enable $subarch
3330 enabled spic && enable_weak pic
3331
3332 # OS specific
3333 case $target_os in
3334     aix)
3335         SHFLAGS=-shared
3336         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3337         enabled shared && add_ldflags -Wl,-brtl
3338         ;;
3339     haiku)
3340         prefix_default="/boot/common"
3341         network_extralibs="-lnetwork"
3342         host_libs=
3343         ;;
3344     sunos)
3345         SHFLAGS='-shared -Wl,-h,$$(@F)'
3346         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3347         network_extralibs="-lsocket -lnsl"
3348         # When using suncc to build, the Solaris linker will mark
3349         # an executable with each instruction set encountered by
3350         # the Solaris assembler.  As our libraries contain their own
3351         # guards for processor-specific code, instead suppress
3352         # generation of the HWCAPS ELF section on Solaris x86 only.
3353         enabled_all suncc x86 &&
3354             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3355             add_ldflags -Wl,-M,mapfile
3356         nm_default='nm -P -g'
3357         ;;
3358     netbsd)
3359         disable symver
3360         oss_indev_extralibs="-lossaudio"
3361         oss_outdev_extralibs="-lossaudio"
3362         ;;
3363     openbsd|bitrig)
3364         disable symver
3365         SHFLAGS='-shared'
3366         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3367         SLIB_INSTALL_LINKS=
3368         oss_indev_extralibs="-lossaudio"
3369         oss_outdev_extralibs="-lossaudio"
3370         ;;
3371     dragonfly)
3372         disable symver
3373         ;;
3374     freebsd)
3375         ;;
3376     bsd/os)
3377         add_extralibs -lpoll -lgnugetopt
3378         ;;
3379     darwin)
3380         gas="gas-preprocessor.pl $cc"
3381         enabled ppc && add_asflags -force_cpusubtype_ALL
3382         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3383         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3384         add_ldflags -Wl,-dynamic,-search_paths_first
3385         SLIBSUF=".dylib"
3386         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3387         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3388         objformat="macho"
3389         enabled x86_64 && objformat="macho64"
3390         enabled_any pic shared ||
3391             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3392         ;;
3393     mingw32*)
3394         if test $target_os = "mingw32ce"; then
3395             disable network
3396         else
3397             target_os=mingw32
3398         fi
3399         LIBTARGET=i386
3400         if enabled x86_64; then
3401             LIBTARGET="i386:x86-64"
3402         elif enabled arm; then
3403             LIBTARGET=arm-wince
3404         fi
3405         check_ldflags -Wl,--nxcompat
3406         check_ldflags -Wl,--dynamicbase
3407         shlibdir_default="$bindir_default"
3408         SLIBPREF=""
3409         SLIBSUF=".dll"
3410         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3411         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3412         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3413         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3414         SLIB_INSTALL_LINKS=
3415         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3416         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3417         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3418         objformat="win32"
3419         dlltool="${cross_prefix}dlltool"
3420         ranlib=:
3421         enable dos_paths
3422         ;;
3423     win32|win64)
3424         disable symver
3425         if enabled shared; then
3426             # Link to the import library instead of the normal static library
3427             # for shared libs.
3428             LD_LIB='%.lib'
3429             # Cannot build both shared and static libs with MSVC or icl.
3430             disable static
3431         fi
3432         shlibdir_default="$bindir_default"
3433         SLIBPREF=""
3434         SLIBSUF=".dll"
3435         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3436         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3437         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3438         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3439         SLIB_INSTALL_LINKS=
3440         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3441         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3442         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3443         objformat="win32"
3444         ranlib=:
3445         enable dos_paths
3446         ;;
3447     cygwin*)
3448         target_os=cygwin
3449         shlibdir_default="$bindir_default"
3450         SLIBPREF="cyg"
3451         SLIBSUF=".dll"
3452         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3453         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3454         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3455         SLIB_INSTALL_LINKS=
3456         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3457         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3458         objformat="win32"
3459         enable dos_paths
3460         ;;
3461     *-dos|freedos|opendos)
3462         network_extralibs="-lsocket"
3463         objformat="coff"
3464         enable dos_paths
3465         add_cppflags -U__STRICT_ANSI__
3466         ;;
3467     linux)
3468         enable dv1394
3469         ;;
3470     irix*)
3471         target_os=irix
3472         ranlib="echo ignoring ranlib"
3473         ;;
3474     os/2*)
3475         ln_s="cp -f"
3476         objformat="aout"
3477         add_cppflags -D_GNU_SOURCE
3478         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3479         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3480         LIBSUF="_s.a"
3481         SLIBPREF=""
3482         SLIBSUF=".dll"
3483         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3484         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3485         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3486             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3487             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3488             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3489             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3490             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3491         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3492             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3493         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3494         enable dos_paths
3495         ;;
3496     gnu/kfreebsd)
3497         add_cppflags -D_BSD_SOURCE
3498         ;;
3499     gnu)
3500         ;;
3501     qnx)
3502         add_cppflags -D_QNX_SOURCE
3503         network_extralibs="-lsocket"
3504         ;;
3505     symbian)
3506         SLIBSUF=".dll"
3507         enable dos_paths
3508         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3509         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3510         add_ldflags -Wl,--target1-abs,--no-undefined \
3511                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3512                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3513         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3514                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3515                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3516         ;;
3517     osf1)
3518         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3519         ;;
3520     minix)
3521         ;;
3522     plan9)
3523         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3524                      -D_REENTRANT_SOURCE        \
3525                      -D_RESEARCH_SOURCE         \
3526                      -DFD_SETSIZE=96            \
3527                      -DHAVE_SOCK_OPTS
3528         add_compat strtod.o strtod=avpriv_strtod
3529         network_extralibs='-lbsd'
3530         exeobjs=compat/plan9/main.o
3531         disable avserver
3532         cp_f='cp'
3533         ;;
3534     none)
3535         ;;
3536     *)
3537         die "Unknown OS '$target_os'."
3538         ;;
3539 esac
3540
3541 # determine libc flavour
3542
3543 probe_libc(){
3544     pfx=$1
3545     pfx_no_=${pfx%_}
3546     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3547     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3548         eval ${pfx}libc_type=uclibc
3549         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3550     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3551         eval ${pfx}libc_type=glibc
3552         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3553     # MinGW headers can be installed on Cygwin, so check for newlib first.
3554     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3555         eval ${pfx}libc_type=newlib
3556         add_${pfx}cppflags -U__STRICT_ANSI__
3557     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3558     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3559         eval ${pfx}libc_type=mingw64
3560         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3561         eval test \$${pfx_no_}cc_type = "gcc" &&
3562             add_${pfx}cppflags -D__printf__=__gnu_printf__
3563     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3564          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3565         eval ${pfx}libc_type=mingw32
3566         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3567             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3568             die "ERROR: MinGW32 runtime version must be >= 3.15."
3569         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3570         eval test \$${pfx_no_}cc_type = "gcc" &&
3571             add_${pfx}cppflags -D__printf__=__gnu_printf__
3572     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3573         eval ${pfx}libc_type=msvcrt
3574         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3575         # 0x601 by default unless something else is set by the user.
3576         # This can easily lead to us detecting functions only present
3577         # in such new versions and producing binaries requiring windows 7.0.
3578         # Therefore explicitly set the default to XP unless the user has
3579         # set something else on the command line.
3580         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3581             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3582     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3583         eval ${pfx}libc_type=klibc
3584     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3585         eval ${pfx}libc_type=bionic
3586     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3587         eval ${pfx}libc_type=solaris
3588         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3589     fi
3590 }
3591
3592 probe_libc
3593 test -n "$libc_type" && enable libc_$libc_type
3594 probe_libc host_
3595 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3596
3597 case $libc_type in
3598     bionic)
3599         add_compat strtod.o strtod=avpriv_strtod
3600         ;;
3601     msvcrt)
3602         add_compat strtod.o strtod=avpriv_strtod
3603         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3604                                      _snprintf=avpriv_snprintf  \
3605                                      vsnprintf=avpriv_vsnprintf
3606         ;;
3607 esac
3608
3609 # hacks for compiler/libc/os combinations
3610
3611 if enabled_all tms470 libc_glibc; then
3612     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3613     add_cppflags -D__USER_LABEL_PREFIX__=
3614     add_cppflags -D__builtin_memset=memset
3615     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3616     add_cflags   -pds=48    # incompatible redefinition of macro
3617 fi
3618
3619 if enabled_all ccc libc_glibc; then
3620     add_ldflags -Wl,-z,now  # calls to libots crash without this
3621 fi
3622
3623 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3624     add_cppflags '-I\$(SRC_PATH)/compat/float'
3625
3626 esc(){
3627     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3628 }
3629
3630 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3631
3632 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3633
3634 set_default $PATHS_LIST
3635 set_default nm
3636
3637 # we need to build at least one lib type
3638 if ! enabled_any static shared; then
3639     cat <<EOF
3640 At least one library type must be built.
3641 Specify --enable-static to build the static libraries or --enable-shared to
3642 build the shared libraries as well. To only build the shared libraries specify
3643 --disable-static in addition to --enable-shared.
3644 EOF
3645     exit 1;
3646 fi
3647
3648 die_license_disabled() {
3649     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3650 }
3651
3652 die_license_disabled gpl libcdio
3653 die_license_disabled gpl libx264
3654 die_license_disabled gpl libx265
3655 die_license_disabled gpl libxavs
3656 die_license_disabled gpl libxvid
3657 die_license_disabled gpl x11grab
3658
3659 die_license_disabled nonfree libfaac
3660 die_license_disabled nonfree libfdk_aac
3661 die_license_disabled nonfree openssl
3662
3663 die_license_disabled version3 libopencore_amrnb
3664 die_license_disabled version3 libopencore_amrwb
3665 die_license_disabled version3 libvo_aacenc
3666 die_license_disabled version3 libvo_amrwbenc
3667
3668 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3669
3670 disabled optimizations || check_cflags -fomit-frame-pointer
3671
3672 enable_weak_pic() {
3673     disabled pic && return
3674     enable pic
3675     add_cppflags -DPIC
3676     case "$target_os" in
3677     mingw*|cygwin*)
3678         ;;
3679     *)
3680         add_cflags -fPIC
3681         ;;
3682     esac
3683     add_asflags  -fPIC
3684 }
3685
3686 enabled pic && enable_weak_pic
3687
3688 check_cc <<EOF || die "Symbol mangling check failed."
3689 int ff_extern;
3690 EOF
3691 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3692 extern_prefix=${sym%%ff_extern*}
3693
3694 check_cc <<EOF && enable_weak inline_asm
3695 void foo(void) { __asm__ volatile ("" ::); }
3696 EOF
3697
3698 _restrict=
3699 for restrict_keyword in restrict __restrict__ __restrict; do
3700     check_cc <<EOF && _restrict=$restrict_keyword && break
3701 void foo(char * $restrict_keyword p);
3702 EOF
3703 done
3704
3705 check_cc <<EOF && enable pragma_deprecated
3706 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3707 EOF
3708
3709 check_cc <<EOF && enable attribute_packed
3710 struct { int x; } __attribute__((packed)) x;
3711 EOF
3712
3713 check_cc <<EOF && enable attribute_may_alias
3714 union { int x; } __attribute__((may_alias)) x;
3715 EOF
3716
3717 check_cc <<EOF || die "endian test failed"
3718 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3719 EOF
3720 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3721
3722 check_inline_asm inline_asm_labels '"1:\n"'
3723
3724 if enabled aarch64; then
3725     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3726     # internal assembler in clang 3.3 does not support this instruction
3727     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3728     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3729
3730     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3731
3732 elif enabled alpha; then
3733
3734     check_cflags -mieee
3735
3736 elif enabled arm; then
3737
3738     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3739     enabled thumb && check_cflags -mthumb || check_cflags -marm
3740     nogas=die
3741
3742     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3743         enable vfp_args
3744     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3745         case "${cross_prefix:-$cc}" in
3746             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3747             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3748 __asm__ (".eabi_attribute 28, 1");
3749 int main(void) { return 0; }
3750 EOF
3751         esac
3752         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3753     fi
3754
3755     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3756     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3757     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3758     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3759     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3760     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3761
3762     [ $target_os = linux ] ||
3763         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3764             $ARCH_EXT_LIST_ARM
3765
3766     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3767
3768     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3769
3770 elif enabled mips; then
3771
3772     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3773
3774 elif enabled parisc; then
3775
3776     if enabled gcc; then
3777         case $($cc -dumpversion) in
3778             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3779         esac
3780     fi
3781
3782 elif enabled ppc; then
3783
3784     enable local_aligned_8 local_aligned_16
3785
3786     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3787     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3788     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3789     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3790
3791     # AltiVec flags: The FSF version of GCC differs from the Apple version
3792     if enabled altivec; then
3793         nogas=warn
3794         check_cflags -maltivec -mabi=altivec &&
3795         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3796         check_cflags -faltivec
3797
3798         # check if our compiler supports Motorola AltiVec C API
3799         check_cc <<EOF || disable altivec
3800 $inc_altivec_h
3801 int main(void) {
3802     vector signed int v1 = (vector signed int) { 0 };
3803     vector signed int v2 = (vector signed int) { 1 };
3804     v1 = vec_add(v1, v2);
3805     return 0;
3806 }
3807 EOF
3808
3809         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3810     fi
3811
3812 elif enabled x86; then
3813
3814     check_builtin rdtsc    intrin.h   "__rdtsc()"
3815     check_builtin mm_empty mmintrin.h "_mm_empty()"
3816
3817     enable local_aligned_8 local_aligned_16
3818
3819     # check whether EBP is available on x86
3820     # As 'i' is stored on the stack, this program will crash
3821     # if the base pointer is used to access it because the
3822     # base pointer is cleared in the inline assembly code.
3823     check_exec_crash <<EOF && enable ebp_available
3824 volatile int i=0;
3825 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3826 return i;
3827 EOF
3828
3829     # check whether EBX is available on x86
3830     check_inline_asm ebx_available '""::"b"(0)' &&
3831         check_inline_asm ebx_available '"":::"%ebx"'
3832
3833     # check whether xmm clobbers are supported
3834     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3835
3836     # check whether binutils is new enough to compile SSSE3/MMXEXT
3837     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3838     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3839
3840     if ! disabled_any asm mmx yasm; then
3841         if check_cmd $yasmexe --version; then
3842             enabled x86_64 && yasm_extra="-m amd64"
3843             yasm_debug="-g dwarf2"
3844         elif check_cmd nasm -v; then
3845             yasmexe=nasm
3846             yasm_debug="-g -F dwarf"
3847             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3848         fi
3849
3850         YASMFLAGS="-f $objformat $yasm_extra"
3851         enabled pic               && append YASMFLAGS "-DPIC"
3852         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3853         case "$objformat" in
3854             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3855         esac
3856
3857         check_yasm "movbe ecx, [5]" && enable yasm ||
3858             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3859         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
3860         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
3861         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3862         check_yasm "CPU amdnop" || disable cpunop
3863     fi
3864
3865     case "$cpu" in
3866         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3867             disable fast_clz
3868         ;;
3869     esac
3870
3871 fi
3872
3873 if enabled asm; then
3874     as=${gas:=$as}
3875     check_as <<EOF && enable gnu_as || \
3876         $nogas "GNU assembler not found, install gas-preprocessor"
3877 .macro m n
3878 \n: .int 0
3879 .endm
3880 m x
3881 EOF
3882 fi
3883
3884 check_ldflags -Wl,--as-needed
3885
3886 if check_func dlopen; then
3887     ldl=
3888 elif check_func dlopen -ldl; then
3889     ldl=-ldl
3890 fi
3891
3892 if ! disabled network; then
3893     check_func getaddrinfo $network_extralibs
3894     check_func getservbyport $network_extralibs
3895     check_func inet_aton $network_extralibs
3896
3897     check_type netdb.h "struct addrinfo"
3898     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3899     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3900     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3901     check_type poll.h "struct pollfd"
3902     check_type netinet/sctp.h "struct sctp_event_subscribe"
3903     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3904     check_type netinet/in.h "struct sockaddr_in6"
3905     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3906     check_type "sys/types.h sys/socket.h" socklen_t
3907
3908     # Prefer arpa/inet.h over winsock2
3909     if check_header arpa/inet.h ; then
3910         check_func closesocket
3911     elif check_header winsock2.h ; then
3912         check_func_headers winsock2.h closesocket -lws2 &&
3913             network_extralibs="-lws2" ||
3914         { check_func_headers winsock2.h closesocket -lws2_32 &&
3915             network_extralibs="-lws2_32"; } || disable winsock2_h network
3916         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3917
3918         check_type ws2tcpip.h socklen_t
3919         check_type ws2tcpip.h "struct addrinfo"
3920         check_type ws2tcpip.h "struct group_source_req"
3921         check_type ws2tcpip.h "struct ip_mreq_source"
3922         check_type ws2tcpip.h "struct ipv6_mreq"
3923         check_type winsock2.h "struct pollfd"
3924         check_struct winsock2.h "struct sockaddr" sa_len
3925         check_type ws2tcpip.h "struct sockaddr_in6"
3926         check_type ws2tcpip.h "struct sockaddr_storage"
3927     else
3928         disable network
3929     fi
3930 fi
3931
3932 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3933 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3934 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3935 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3936
3937 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3938 check_func  ${malloc_prefix}memalign            && enable memalign
3939 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3940
3941 check_func  fcntl
3942 check_func  fork
3943 check_func  gethrtime
3944 check_func  getopt
3945 check_func  getrusage
3946 check_func  gettimeofday
3947 check_func  isatty
3948 check_func  localtime_r
3949 check_func  mach_absolute_time
3950 check_func  mkstemp
3951 check_func  mmap
3952 check_func  mprotect
3953 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3954 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3955 check_func  sched_getaffinity
3956 check_func  setrlimit
3957 check_func  strerror_r
3958 check_func  strptime
3959 check_func  sysconf
3960 check_func  sysctl
3961 check_func  usleep
3962
3963 check_func_headers io.h setmode
3964 check_func_headers stdlib.h getenv
3965
3966 check_func_headers windows.h CoTaskMemFree -lole32
3967 check_func_headers windows.h GetProcessAffinityMask
3968 check_func_headers windows.h GetProcessTimes
3969 check_func_headers windows.h GetSystemTimeAsFileTime
3970 check_func_headers windows.h MapViewOfFile
3971 check_func_headers windows.h SetConsoleTextAttribute
3972 check_func_headers windows.h Sleep
3973 check_func_headers windows.h VirtualAlloc
3974
3975 check_header direct.h
3976 check_header dlfcn.h
3977 check_header dxva.h
3978 check_header dxva2api.h
3979 check_header io.h
3980 check_header mach/mach_time.h
3981 check_header malloc.h
3982 check_header poll.h
3983 check_header sys/mman.h
3984 check_header sys/param.h
3985 check_header sys/resource.h
3986 check_header sys/select.h
3987 check_header sys/time.h
3988 check_header sys/un.h
3989 check_header unistd.h
3990 check_header vdpau/vdpau.h
3991 check_header vdpau/vdpau_x11.h
3992 check_header VideoDecodeAcceleration/VDADecoder.h
3993 check_header windows.h
3994 check_header X11/extensions/XvMClib.h
3995
3996 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3997 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3998 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3999
4000 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4001
4002 if ! disabled w32threads && ! enabled pthreads; then
4003     check_func_headers "windows.h process.h" _beginthreadex &&
4004         enable w32threads || disable w32threads
4005 fi
4006
4007 # check for some common methods of building with pthread support
4008 # do this before the optional library checks as some of them require pthreads
4009 if ! disabled pthreads && ! enabled w32threads; then
4010     enable pthreads
4011     if check_func pthread_join -pthread; then
4012         add_cflags -pthread
4013         add_extralibs -pthread
4014     elif check_func pthread_join -pthreads; then
4015         add_cflags -pthreads
4016         add_extralibs -pthreads
4017     elif check_func pthread_join -lpthreadGC2; then
4018         add_extralibs -lpthreadGC2
4019     elif check_lib pthread.h pthread_join -lpthread; then
4020         :
4021     elif ! check_func pthread_join; then
4022         disable pthreads
4023     fi
4024 fi
4025
4026 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4027 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4028
4029 check_lib math.h sin -lm && LIBM="-lm"
4030 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4031
4032 atan2f_args=2
4033 ldexpf_args=2
4034 powf_args=2
4035
4036 for func in $MATH_FUNCS; do
4037     eval check_mathfunc $func \${${func}_args:-1}
4038 done
4039
4040 # these are off by default, so fail if requested and not available
4041 enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
4042                                { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
4043                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4044 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4045 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4046 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4047 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4048 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4049 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4050 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4051 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4052                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4053                                done || die "ERROR: libgsm not found"; }
4054 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4055 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4056 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4057 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4058 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4059 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4060                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4061 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4062 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4063 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4064 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4065 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4066 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4067 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4068 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4069 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4070 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4071 enabled libvpx            && {
4072     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4073                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4074     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
4075                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
4076     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4077     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4078 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4079 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4080 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4081                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4082                                die "ERROR: libx264 version must be >= 0.118."; }
4083 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4084                              { check_cpp_condition x265.h "X265_BUILD >= 13" ||
4085                                die "ERROR: libx265 version must be >= 13."; }
4086 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4087 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4088 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4089                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4090                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4091                                die "ERROR: openssl not found"; }
4092
4093 if enabled gnutls; then
4094     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4095     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4096 fi
4097
4098 # libdc1394 check
4099 if enabled libdc1394; then
4100     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4101         enable libdc1394_2; } ||
4102     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4103         enable libdc1394_1; } ||
4104     die "ERROR: No version of libdc1394 found "
4105 fi
4106
4107 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4108     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4109     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4110     enable sdl
4111 fi
4112
4113 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4114 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4115
4116 check_header linux/fb.h
4117 check_header linux/videodev2.h
4118 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4119
4120 check_header sys/videoio.h
4121
4122 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4123 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4124 # w32api 3.12 had it defined wrong
4125 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4126
4127 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4128 { check_header dev/bktr/ioctl_meteor.h &&
4129   check_header dev/bktr/ioctl_bt848.h; } ||
4130 { check_header machine/ioctl_meteor.h &&
4131   check_header machine/ioctl_bt848.h; } ||
4132 { check_header dev/video/meteor/ioctl_meteor.h &&
4133   check_header dev/video/bktr/ioctl_bt848.h; } ||
4134 check_header dev/ic/bt8xx.h
4135
4136 check_header sndio.h
4137 check_header sys/soundcard.h
4138 check_header soundcard.h
4139
4140 enabled_any alsa_indev alsa_outdev &&
4141     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4142
4143 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4144     check_func jack_port_get_latency_range -ljack
4145
4146 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4147
4148 if enabled libcdio; then
4149     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4150     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
4151 fi
4152
4153 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4154
4155 enabled x11grab                                           &&
4156 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4157 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4158 { enabled xlib || die "ERROR: Xlib not found"; }
4159
4160 enabled vdpau &&
4161     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4162     disable vdpau
4163
4164 enabled vdpau && enabled xlib &&
4165     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4166     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4167     enable vdpau_x11
4168
4169 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4170
4171 # add some useful compiler flags if supported
4172 check_cflags -Wdeclaration-after-statement
4173 check_cflags -Wall
4174 check_cflags -Wdisabled-optimization
4175 check_cflags -Wpointer-arith
4176 check_cflags -Wredundant-decls
4177 check_cflags -Wcast-qual
4178 check_cflags -Wwrite-strings
4179 check_cflags -Wtype-limits
4180 check_cflags -Wundef
4181 check_cflags -Wmissing-prototypes
4182 check_cflags -Wstrict-prototypes
4183 enabled extra_warnings && check_cflags -Winline
4184
4185 check_disable_warning(){
4186     warning_flag=-W${1#-Wno-}
4187     test_cflags $warning_flag && add_cflags $1
4188 }
4189
4190 check_disable_warning -Wno-parentheses
4191 check_disable_warning -Wno-switch
4192 check_disable_warning -Wno-format-zero-length
4193 check_disable_warning -Wno-pointer-sign
4194
4195 # add some linker flags
4196 check_ldflags -Wl,--warn-common
4197 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4198 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4199
4200 # add some strip flags
4201 # -wN '..@*' is more selective than -x, but not available everywhere.
4202 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4203
4204 enabled neon_clobber_test &&
4205     check_ldflags -Wl,--wrap,avcodec_open2              \
4206                   -Wl,--wrap,avcodec_decode_audio4      \
4207                   -Wl,--wrap,avcodec_decode_video2      \
4208                   -Wl,--wrap,avcodec_decode_subtitle2   \
4209                   -Wl,--wrap,avcodec_encode_audio2      \
4210                   -Wl,--wrap,avcodec_encode_video2      \
4211                   -Wl,--wrap,avcodec_encode_subtitle    \
4212                   -Wl,--wrap,avresample_convert ||
4213     disable neon_clobber_test
4214
4215 enabled xmm_clobber_test &&
4216     check_ldflags -Wl,--wrap,avcodec_open2              \
4217                   -Wl,--wrap,avcodec_decode_audio4      \
4218                   -Wl,--wrap,avcodec_decode_video2      \
4219                   -Wl,--wrap,avcodec_decode_subtitle2   \
4220                   -Wl,--wrap,avcodec_encode_audio2      \
4221                   -Wl,--wrap,avcodec_encode_video2      \
4222                   -Wl,--wrap,avcodec_encode_subtitle    \
4223                   -Wl,--wrap,avresample_convert         \
4224                   -Wl,--wrap,sws_scale ||
4225     disable xmm_clobber_test
4226
4227 echo "X{};" > $TMPV
4228 if test_ldflags -Wl,--version-script,$TMPV; then
4229     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4230     check_cc <<EOF && enable symver_asm_label
4231 void ff_foo(void) __asm__ ("av_foo@VERSION");
4232 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4233 EOF
4234     check_cc <<EOF && enable symver_gnu_asm
4235 __asm__(".symver ff_foo,av_foo@VERSION");
4236 void ff_foo(void) {}
4237 EOF
4238 fi
4239
4240 if [ -z "$optflags" ]; then
4241     if enabled small; then
4242         optflags=$cflags_size
4243     elif enabled optimizations; then
4244         optflags=$cflags_speed
4245     else
4246         optflags=$cflags_noopt
4247     fi
4248 fi
4249
4250 check_optflags(){
4251     check_cflags "$@"
4252     enabled lto && check_ldflags "$@"
4253 }
4254
4255
4256 if enabled lto; then
4257     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4258     check_cflags  -flto
4259     check_ldflags -flto $cpuflags
4260 fi
4261
4262 check_optflags $optflags
4263 check_optflags -fno-math-errno
4264 check_optflags -fno-signed-zeros
4265
4266 if enabled icc; then
4267     # Just warnings, no remarks
4268     check_cflags -w1
4269     # -wd: Disable following warnings
4270     # 144, 167, 556: -Wno-pointer-sign
4271     # 1292: attribute "foo" ignored
4272     # 1419: external declaration in primary source file
4273     # 10006: ignoring unknown option -fno-signed-zeros
4274     # 10148: ignoring unknown option -Wno-parentheses
4275     # 10156: ignoring option '-W'; no argument required
4276     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4277     # 11030: Warning unknown option --as-needed
4278     # 10156: ignoring option '-export'; no argument required
4279     check_ldflags -wd10156,11030
4280     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4281     enable ebp_available
4282     if enabled x86_32; then
4283         icc_version=$($cc -dumpversion)
4284         test ${icc_version%%.*} -ge 11 &&
4285             check_cflags -falign-stack=maintain-16-byte ||
4286             disable aligned_stack
4287     fi
4288 elif enabled ccc; then
4289     # disable some annoying warnings
4290     add_cflags -msg_disable bitnotint
4291     add_cflags -msg_disable mixfuncvoid
4292     add_cflags -msg_disable nonstandcast
4293     add_cflags -msg_disable unsupieee
4294 elif enabled gcc; then
4295     check_optflags -fno-tree-vectorize
4296     check_cflags -Werror=implicit-function-declaration
4297     check_cflags -Werror=missing-prototypes
4298     check_cflags -Werror=return-type
4299     check_cflags -Werror=declaration-after-statement
4300     check_cflags -Werror=vla
4301     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4302 elif enabled llvm_gcc; then
4303     check_cflags -mllvm -stack-alignment=16
4304 elif enabled clang; then
4305     check_cflags -mllvm -stack-alignment=16
4306     check_cflags -Qunused-arguments
4307     check_cflags -Werror=implicit-function-declaration
4308     check_cflags -Werror=missing-prototypes
4309     check_cflags -Werror=return-type
4310 elif enabled cparser; then
4311     add_cflags -Wno-missing-variable-declarations
4312     add_cflags -Wno-empty-statement
4313 elif enabled armcc; then
4314     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
4315     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
4316     # 2523: use of inline assembler is deprecated
4317     add_cflags -W${armcc_opt},--diag_suppress=2523
4318     add_cflags -W${armcc_opt},--diag_suppress=1207
4319     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4320     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4321     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4322     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4323 elif enabled tms470; then
4324     add_cflags -pds=824 -pds=837
4325     disable inline_asm
4326 elif enabled pathscale; then
4327     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4328 elif enabled_any msvc icl; then
4329     enabled x86_32 && disable aligned_stack
4330     enabled_all x86_32 debug && add_cflags -Oy-
4331     enabled debug && add_ldflags -debug
4332     enable pragma_deprecated
4333     if enabled icl; then
4334         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4335         # (correctly) on icl 13.x.
4336         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4337             add_cflags -Qansi-alias
4338         # icl will pass the inline asm tests but inline asm is currently
4339         # not supported (build will fail)
4340         disable inline_asm
4341     fi
4342 fi
4343
4344 case $as_type in
4345     clang)
4346         add_asflags -Qunused-arguments
4347     ;;
4348 esac
4349
4350 case $ld_type in
4351     clang)
4352         check_ldflags -Qunused-arguments
4353     ;;
4354 esac
4355
4356 case $target_os in
4357     osf1)
4358         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4359     ;;
4360     plan9)
4361         add_cppflags -Dmain=plan9_main
4362     ;;
4363 esac
4364
4365 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4366
4367 check_deps $CONFIG_LIST       \
4368            $CONFIG_EXTRA      \
4369            $HAVE_LIST         \
4370            $ALL_COMPONENTS    \
4371
4372 enabled_all dxva2 CoTaskMemFree &&
4373     prepend avconv_libs $($ldflags_filter "-lole32") &&
4374     enable dxva2_lib
4375
4376 ! enabled_any memalign posix_memalign aligned_malloc &&
4377     enabled_any $need_memalign && enable memalign_hack
4378
4379 for thread in $THREADS_LIST; do
4380     if enabled $thread; then
4381         test -n "$thread_type" &&
4382             die "ERROR: Only one thread type must be selected." ||
4383             thread_type="$thread"
4384     fi
4385 done
4386
4387 # conditional library dependencies, in linking order
4388 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
4389 enabled resample_filter && prepend avfilter_deps "avresample"
4390 enabled scale_filter    && prepend avfilter_deps "swscale"
4391
4392 enabled opus_decoder    && prepend avcodec_deps "avresample"
4393
4394 expand_deps(){
4395     lib_deps=${1}_deps
4396     eval "deps=\$$lib_deps"
4397     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
4398     unique $lib_deps
4399 }
4400
4401 map 'expand_deps $v' $LIBRARY_LIST
4402
4403 echo "install prefix            $prefix"
4404 echo "source path               $source_path"
4405 echo "C compiler                $cc"
4406 echo "C library                 $libc_type"
4407 if test "$host_cc" != "$cc"; then
4408     echo "host C compiler           $host_cc"
4409     echo "host C library            $host_libc_type"
4410 fi
4411 echo "ARCH                      $arch ($cpu)"
4412 if test "$build_suffix" != ""; then
4413     echo "build suffix              $build_suffix"
4414 fi
4415 if test "$extra_version" != ""; then
4416     echo "version string suffix     $extra_version"
4417 fi
4418 echo "big-endian                ${bigendian-no}"
4419 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4420 if enabled x86; then
4421     echo "${yasmexe}                      ${yasm-no}"
4422     echo "MMX enabled               ${mmx-no}"
4423     echo "MMXEXT enabled            ${mmxext-no}"
4424     echo "3DNow! enabled            ${amd3dnow-no}"
4425     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4426     echo "SSE enabled               ${sse-no}"
4427     echo "SSSE3 enabled             ${ssse3-no}"
4428     echo "AVX enabled               ${avx-no}"
4429     echo "XOP enabled               ${xop-no}"
4430     echo "FMA3 enabled              ${fma3-no}"
4431     echo "FMA4 enabled              ${fma4-no}"
4432     echo "i686 features enabled     ${i686-no}"
4433     echo "CMOV is fast              ${fast_cmov-no}"
4434     echo "EBX available             ${ebx_available-no}"
4435     echo "EBP available             ${ebp_available-no}"
4436 fi
4437 if enabled aarch64; then
4438     echo "NEON enabled              ${neon-no}"
4439     echo "VFP enabled               ${vfp-no}"
4440 fi
4441 if enabled arm; then
4442     echo "ARMv5TE enabled           ${armv5te-no}"
4443     echo "ARMv6 enabled             ${armv6-no}"
4444     echo "ARMv6T2 enabled           ${armv6t2-no}"
4445     echo "VFP enabled               ${vfp-no}"
4446     echo "NEON enabled              ${neon-no}"
4447 fi
4448 if enabled ppc; then
4449     echo "AltiVec enabled           ${altivec-no}"
4450     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4451     echo "dcbzl available           ${dcbzl-no}"
4452 fi
4453 echo "debug symbols             ${debug-no}"
4454 echo "optimize for size         ${small-no}"
4455 echo "optimizations             ${optimizations-no}"
4456 echo "static                    ${static-no}"
4457 echo "shared                    ${shared-no}"
4458 echo "new filter support        ${avfilter-no}"
4459 echo "network support           ${network-no}"
4460 echo "threading support         ${thread_type-no}"
4461 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4462 echo "SDL support               ${sdl-no}"
4463 test -n "$random_seed" &&
4464     echo "random seed               ${random_seed}"
4465 echo
4466
4467 echo "External libraries:"
4468 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4469 echo
4470
4471 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4472     echo "Enabled ${type}s:"
4473     eval list=\$$(toupper $type)_LIST
4474     print_enabled '_*' $list | print_3_columns
4475     echo
4476 done
4477
4478 license="LGPL version 2.1 or later"
4479 if enabled nonfree; then
4480     license="nonfree and unredistributable"
4481 elif enabled gplv3; then
4482     license="GPL version 3 or later"
4483 elif enabled lgplv3; then
4484     license="LGPL version 3 or later"
4485 elif enabled gpl; then
4486     license="GPL version 2 or later"
4487 fi
4488
4489 echo "License: $license"
4490
4491 echo "Creating config.mak and config.h..."
4492
4493 test -e Makefile || echo "include $source_path/Makefile" > Makefile
4494
4495 config_files="$TMPH config.mak"
4496
4497 cat > config.mak <<EOF
4498 # Automatically generated by configure - do not modify!
4499 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
4500 prefix=$prefix
4501 LIBDIR=\$(DESTDIR)$libdir
4502 SHLIBDIR=\$(DESTDIR)$shlibdir
4503 INCDIR=\$(DESTDIR)$incdir
4504 BINDIR=\$(DESTDIR)$bindir
4505 DATADIR=\$(DESTDIR)$datadir
4506 DOCDIR=\$(DESTDIR)$docdir
4507 MANDIR=\$(DESTDIR)$mandir
4508 SRC_PATH=$source_path
4509 CC_IDENT=$cc_ident
4510 ARCH=$arch
4511 CC=$cc
4512 AS=$as
4513 LD=$ld
4514 DEPCC=$dep_cc
4515 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4516 DEPAS=$as
4517 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4518 YASM=$yasmexe
4519 DEPYASM=$yasmexe
4520 AR=$ar
4521 ARFLAGS=$arflags
4522 AR_O=$ar_o
4523 RANLIB=$ranlib
4524 STRIP=$strip
4525 LN_S=$ln_s
4526 CPPFLAGS=$CPPFLAGS
4527 CFLAGS=$CFLAGS
4528 ASFLAGS=$ASFLAGS
4529 AS_C=$AS_C
4530 AS_O=$AS_O
4531 CC_C=$CC_C
4532 CC_E=$CC_E
4533 CC_O=$CC_O
4534 LD_O=$LD_O
4535 LD_LIB=$LD_LIB
4536 LD_PATH=$LD_PATH
4537 DLLTOOL=$dlltool
4538 LDFLAGS=$LDFLAGS
4539 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4540 STRIPFLAGS=$STRIPFLAGS
4541 YASMFLAGS=$YASMFLAGS
4542 BUILDSUF=$build_suffix
4543 FULLNAME=$FULLNAME
4544 LIBPREF=$LIBPREF
4545 LIBSUF=$LIBSUF
4546 LIBNAME=$LIBNAME
4547 SLIBPREF=$SLIBPREF
4548 SLIBSUF=$SLIBSUF
4549 EXESUF=$EXESUF
4550 EXTRA_VERSION=$extra_version
4551 CCDEP=$CCDEP
4552 CCDEP_FLAGS=$CCDEP_FLAGS
4553 ASDEP=$ASDEP
4554 ASDEP_FLAGS=$ASDEP_FLAGS
4555 CC_DEPFLAGS=$CC_DEPFLAGS
4556 AS_DEPFLAGS=$AS_DEPFLAGS
4557 HOSTCC=$host_cc
4558 HOSTLD=$host_ld
4559 HOSTCFLAGS=$host_cflags
4560 HOSTCPPFLAGS=$host_cppflags
4561 HOSTEXESUF=$HOSTEXESUF
4562 HOSTLDFLAGS=$host_ldflags
4563 HOSTLIBS=$host_libs
4564 DEPHOSTCC=$host_cc
4565 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4566 HOSTCCDEP=$HOSTCCDEP
4567 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4568 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4569 HOSTCC_C=$HOSTCC_C
4570 HOSTCC_O=$HOSTCC_O
4571 HOSTLD_O=$HOSTLD_O
4572 TARGET_EXEC=$target_exec $target_exec_args
4573 TARGET_PATH=$target_path
4574 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4575 CFLAGS-avplay=$sdl_cflags
4576 ZLIB=$($ldflags_filter -lz)
4577 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4578 EXTRALIBS=$extralibs
4579 COMPAT_OBJS=$compat_objs
4580 EXEOBJS=$exeobjs
4581 INSTALL=install
4582 LIBTARGET=${LIBTARGET}
4583 SLIBNAME=${SLIBNAME}
4584 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4585 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4586 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4587 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4588 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4589 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4590 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4591 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4592 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4593 EOF
4594
4595 get_version(){
4596     lcname=lib${1}
4597     name=$(toupper $lcname)
4598     file=$source_path/$lcname/version.h
4599     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4600     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4601     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4602     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4603     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4604 }
4605
4606 map 'get_version $v' $LIBRARY_LIST
4607
4608 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
4609
4610 print_program_libs(){
4611     eval "program_libs=\$${1}_libs"
4612     eval echo "LIBS-${1}=${program_libs}" >> config.mak
4613 }
4614
4615 map 'print_program_libs $v' $PROGRAM_LIST
4616
4617 cat > $TMPH <<EOF
4618 /* Automatically generated by configure - do not modify! */
4619 #ifndef LIBAV_CONFIG_H
4620 #define LIBAV_CONFIG_H
4621 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4622 #define LIBAV_LICENSE "$(c_escape $license)"
4623 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4624 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4625 #define restrict $_restrict
4626 #define EXTERN_PREFIX "${extern_prefix}"
4627 #define EXTERN_ASM ${extern_prefix}
4628 #define SLIBSUF "$SLIBSUF"
4629 EOF
4630
4631 test -n "$malloc_prefix" &&
4632     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4633
4634 if enabled yasm; then
4635     append config_files $TMPASM
4636     printf '' >$TMPASM
4637 fi
4638
4639 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4640
4641 print_config ARCH_   "$config_files" $ARCH_LIST
4642 print_config HAVE_   "$config_files" $HAVE_LIST
4643 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4644                                      $CONFIG_EXTRA      \
4645                                      $ALL_COMPONENTS    \
4646
4647 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4648
4649 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4650 cp_if_changed $TMPH config.h
4651 touch .config
4652
4653 enabled yasm && cp_if_changed $TMPASM config.asm
4654
4655 cat > $TMPH <<EOF
4656 /* Generated by ffconf */
4657 #ifndef AVUTIL_AVCONFIG_H
4658 #define AVUTIL_AVCONFIG_H
4659 EOF
4660
4661 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4662
4663 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4664
4665 cp_if_changed $TMPH libavutil/avconfig.h
4666
4667 test -n "$WARNINGS" && printf "\n$WARNINGS"
4668
4669 # build pkg-config files
4670
4671 lib_version(){
4672     eval printf "\"lib${1} >= \$LIB$(toupper ${1})_VERSION, \""
4673 }
4674
4675 pkgconfig_generate(){
4676     name=$1
4677     shortname=${name#lib}${build_suffix}
4678     comment=$2
4679     version=$3
4680     libs=$4
4681     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
4682     requires=${requires%, }
4683     enabled ${name#lib} || return 0
4684     mkdir -p $name
4685     cat <<EOF > $name/$name.pc
4686 prefix=$prefix
4687 exec_prefix=\${prefix}
4688 libdir=$libdir
4689 includedir=$incdir
4690
4691 Name: $name
4692 Description: $comment
4693 Version: $version
4694 Requires: $(enabled shared || echo $requires)
4695 Requires.private: $(enabled shared && echo $requires)
4696 Conflicts:
4697 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4698 Libs.private: $(enabled shared && echo $libs)
4699 Cflags: -I\${includedir}
4700 EOF
4701     cat <<EOF > $name/$name-uninstalled.pc
4702 prefix=
4703 exec_prefix=
4704 libdir=\${pcfiledir}
4705 includedir=${source_path}
4706
4707 Name: $name
4708 Description: $comment
4709 Version: $version
4710 Requires: $requires
4711 Conflicts:
4712 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4713 Cflags: -I\${includedir}
4714 EOF
4715 }
4716
4717 pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBM"
4718 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs"
4719 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs"
4720 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs"
4721 pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs"
4722 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs"
4723 pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"