db7044db32bf3cdda868926781b3954305f957ae
[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       deprecated, does nothing
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 [$target_os]
226   --target-exec=CMD        command to run executables on target
227   --target-path=DIR        path to view of build directory on target
228   --target-samples=DIR     path to samples directory on target
229   --toolchain=NAME         set tool defaults according to NAME
230   --nm=NM                  use nm tool
231   --ar=AR                  use archive tool AR [$ar_default]
232   --as=AS                  use assembler AS [$as_default]
233   --cc=CC                  use C compiler CC [$cc_default]
234   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
235   --ld=LD                  use linker LD
236   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
237   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
238   --host-cc=HOSTCC         use host C compiler HOSTCC
239   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
240   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
241   --host-ld=HOSTLD         use host linker HOSTLD
242   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
243   --host-libs=HLIBS        use libs HLIBS when linking for host
244   --host-os=OS             compiler host OS [$target_os]
245   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
246   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
247   --extra-libs=ELIBS       add ELIBS [$ELIBS]
248   --extra-version=STRING   version string suffix []
249   --optflags=OPTFLAGS      override optimization-related compiler flags
250   --build-suffix=SUFFIX    library name suffix []
251   --enable-pic             build position-independent code
252   --enable-thumb           compile for Thumb instruction set
253   --enable-lto             use link-time optimization
254
255 Advanced options (experts only):
256   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
257   --disable-symver         disable symbol versioning
258   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
259   --disable-safe-bitstream-reader
260                            disable buffer boundary checking in bitreaders
261                            (faster, but may crash)
262   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
263   --enable-sram            allow use of on-chip SRAM
264
265 Optimization options (experts only):
266   --disable-asm            disable all assembly optimizations
267   --disable-altivec        disable AltiVec optimizations
268   --disable-amd3dnow       disable 3DNow! optimizations
269   --disable-amd3dnowext    disable 3DNow! extended optimizations
270   --disable-mmx            disable MMX optimizations
271   --disable-mmxext         disable MMXEXT optimizations
272   --disable-sse            disable SSE optimizations
273   --disable-sse2           disable SSE2 optimizations
274   --disable-sse3           disable SSE3 optimizations
275   --disable-ssse3          disable SSSE3 optimizations
276   --disable-sse4           disable SSE4 optimizations
277   --disable-sse42          disable SSE4.2 optimizations
278   --disable-avx            disable AVX optimizations
279   --disable-xop            disable XOP optimizations
280   --disable-fma3           disable FMA3 optimizations
281   --disable-fma4           disable FMA4 optimizations
282   --disable-avx2           disable AVX2 optimizations
283   --disable-armv5te        disable armv5te optimizations
284   --disable-armv6          disable armv6 optimizations
285   --disable-armv6t2        disable armv6t2 optimizations
286   --disable-vfp            disable VFP optimizations
287   --disable-neon           disable NEON optimizations
288   --disable-inline-asm     disable use of inline assembly
289   --disable-yasm           disable use of nasm/yasm assembly
290
291 Developer options (useful when working on Libav itself):
292   --disable-debug          disable debugging symbols
293   --enable-debug=LEVEL     set the debug level [$debuglevel]
294   --disable-optimizations  disable compiler optimizations
295   --enable-extra-warnings  enable more compiler warnings
296   --samples=PATH           location of test samples for FATE, if not set use
297                            \$LIBAV_SAMPLES at make invocation time.
298   --enable-neon-clobber-test check NEON registers for clobbering (should be
299                            used only for debugging purposes)
300   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
301                            should be used only for debugging purposes)
302   --enable-random          randomly enable/disable components
303   --disable-random
304   --enable-random=LIST     randomly enable/disable specific components or
305   --disable-random=LIST    component groups. LIST is a comma-separated list
306                            of NAME[:PROB] entries where NAME is a component
307                            (group) and PROB the probability associated with
308                            NAME (default 0.5).
309   --random-seed=VALUE      seed value for --enable/disable-random
310
311 NOTE: Object files are built at the place where configure is launched.
312 EOF
313   exit 0
314 }
315
316 quotes='""'
317
318 log(){
319     echo "$@" >> $logfile
320 }
321
322 log_file(){
323     log BEGIN $1
324     pr -n -t $1 >> $logfile
325     log END $1
326 }
327
328 echolog(){
329     log "$@"
330     echo "$@"
331 }
332
333 warn(){
334     log "WARNING: $*"
335     WARNINGS="${WARNINGS}WARNING: $*\n"
336 }
337
338 die(){
339     echolog "$@"
340     cat <<EOF
341
342 If you think configure made a mistake, make sure you are using the latest
343 version from Git.  If the latest version fails, report the problem to the
344 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
345 EOF
346     if disabled logging; then
347         cat <<EOF
348 Rerun configure with logging enabled (do not use --disable-logging), and
349 include the log this produces with your report.
350 EOF
351     else
352         cat <<EOF
353 Include the log file "$logfile" produced by configure as this will help
354 solving the problem.
355 EOF
356     fi
357     exit 1
358 }
359
360 # Avoid locale weirdness, besides we really just want to translate ASCII.
361 toupper(){
362     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
363 }
364
365 tolower(){
366     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
367 }
368
369 c_escape(){
370     echo "$*" | sed 's/["\\]/\\\0/g'
371 }
372
373 sh_quote(){
374     v=$(echo "$1" | sed "s/'/'\\\\''/g")
375     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
376     echo "$v"
377 }
378
379 cleanws(){
380     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
381 }
382
383 filter(){
384     pat=$1
385     shift
386     for v; do
387         eval "case $v in $pat) echo $v ;; esac"
388     done
389 }
390
391 filter_out(){
392     pat=$1
393     shift
394     for v; do
395         eval "case $v in $pat) ;; *) echo $v ;; esac"
396     done
397 }
398
399 map(){
400     m=$1
401     shift
402     for v; do eval $m; done
403 }
404
405 add_suffix(){
406     suffix=$1
407     shift
408     for v; do echo ${v}${suffix}; done
409 }
410
411 set_all(){
412     value=$1
413     shift
414     for var in $*; do
415         eval $var=$value
416     done
417 }
418
419 set_weak(){
420     value=$1
421     shift
422     for var; do
423         eval : \${$var:=$value}
424     done
425 }
426
427 sanitize_var_name(){
428     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
429 }
430
431 set_safe(){
432     var=$1
433     shift
434     eval $(sanitize_var_name "$var")='$*'
435 }
436
437 get_safe(){
438     eval echo \$$(sanitize_var_name "$1")
439 }
440
441 pushvar(){
442     for pvar in $*; do
443         eval level=\${${pvar}_level:=0}
444         eval ${pvar}_${level}="\$$pvar"
445         eval ${pvar}_level=$(($level+1))
446     done
447 }
448
449 popvar(){
450     for pvar in $*; do
451         eval level=\${${pvar}_level:-0}
452         test $level = 0 && continue
453         eval level=$(($level-1))
454         eval $pvar="\${${pvar}_${level}}"
455         eval ${pvar}_level=$level
456         eval unset ${pvar}_${level}
457     done
458 }
459
460 enable(){
461     set_all yes $*
462 }
463
464 disable(){
465     set_all no $*
466 }
467
468 enable_weak(){
469     set_weak yes $*
470 }
471
472 disable_weak(){
473     set_weak no $*
474 }
475
476 enable_safe(){
477     for var; do
478         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
479     done
480 }
481
482 disable_safe(){
483     for var; do
484         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
485     done
486 }
487
488 do_enable_deep(){
489     for var; do
490         enabled $var && continue
491         eval sel="\$${var}_select"
492         eval sgs="\$${var}_suggest"
493         pushvar var sgs
494         enable_deep $sel
495         popvar sgs
496         enable_deep_weak $sgs
497         popvar var
498     done
499 }
500
501 enable_deep(){
502     do_enable_deep $*
503     enable $*
504 }
505
506 enable_deep_weak(){
507     for var; do
508         disabled $var && continue
509         pushvar var
510         do_enable_deep $var
511         popvar var
512         enable_weak $var
513     done
514 }
515
516 enabled(){
517     test "${1#!}" = "$1" && op== || op=!=
518     eval test "x\$${1#!}" $op "xyes"
519 }
520
521 disabled(){
522     test "${1#!}" = "$1" && op== || op=!=
523     eval test "x\$${1#!}" $op "xno"
524 }
525
526 enabled_all(){
527     for opt; do
528         enabled $opt || return 1
529     done
530 }
531
532 disabled_all(){
533     for opt; do
534         disabled $opt || return 1
535     done
536 }
537
538 enabled_any(){
539     for opt; do
540         enabled $opt && return 0
541     done
542 }
543
544 disabled_any(){
545     for opt; do
546         disabled $opt && return 0
547     done
548     return 1
549 }
550
551 set_default(){
552     for opt; do
553         eval : \${$opt:=\$${opt}_default}
554     done
555 }
556
557 is_in(){
558     value=$1
559     shift
560     for var in $*; do
561         [ $var = $value ] && return 0
562     done
563     return 1
564 }
565
566 do_check_deps(){
567     for cfg; do
568         cfg="${cfg#!}"
569         enabled ${cfg}_checking && die "Circular dependency for $cfg."
570         disabled ${cfg}_checking && continue
571         enable ${cfg}_checking
572         append allopts $cfg
573
574         eval dep_all="\$${cfg}_deps"
575         eval dep_any="\$${cfg}_deps_any"
576         eval dep_sel="\$${cfg}_select"
577         eval dep_sgs="\$${cfg}_suggest"
578         eval dep_ifa="\$${cfg}_if"
579         eval dep_ifn="\$${cfg}_if_any"
580
581         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
582         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
583         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
584
585         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
586         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
587         enabled_all  $dep_all || disable $cfg
588         enabled_any  $dep_any || disable $cfg
589         disabled_any $dep_sel && disable $cfg
590
591         if enabled $cfg; then
592             enable_deep $dep_sel
593             enable_deep_weak $dep_sgs
594         fi
595
596         disable ${cfg}_checking
597     done
598 }
599
600 check_deps(){
601     unset allopts
602
603     do_check_deps "$@"
604
605     for cfg in $allopts; do
606         enabled $cfg || continue
607         eval dep_extralibs="\$${cfg}_extralibs"
608         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
609     done
610 }
611
612 print_config(){
613     pfx=$1
614     files=$2
615     shift 2
616     map 'eval echo "$v \${$v:-no}"' "$@" |
617     awk "BEGIN { split(\"$files\", files) }
618         {
619             c = \"$pfx\" toupper(\$1);
620             v = \$2;
621             sub(/yes/, 1, v);
622             sub(/no/,  0, v);
623             for (f in files) {
624                 file = files[f];
625                 if (file ~ /\\.h\$/) {
626                     printf(\"#define %s %d\\n\", c, v) >>file;
627                 } else if (file ~ /\\.asm\$/) {
628                     printf(\"%%define %s %d\\n\", c, v) >>file;
629                 } else if (file ~ /\\.mak\$/) {
630                     n = -v ? \"\" : \"!\";
631                     printf(\"%s%s=yes\\n\", n, c) >>file;
632                 }
633             }
634         }"
635 }
636
637 print_enabled(){
638     suf=$1
639     shift
640     for v; do
641         enabled $v && printf "%s\n" ${v%$suf};
642     done
643 }
644
645 append(){
646     var=$1
647     shift
648     eval "$var=\"\$$var $*\""
649 }
650
651 prepend(){
652     var=$1
653     shift
654     eval "$var=\"$* \$$var\""
655 }
656
657 unique(){
658     var=$1
659     uniq_list=""
660     for tok in $(eval echo \$$var); do
661         uniq_list="$(filter_out $tok $uniq_list) $tok"
662     done
663     eval "$var=\"${uniq_list}\""
664 }
665
666 add_cppflags(){
667     append CPPFLAGS "$@"
668 }
669
670 add_cflags(){
671     append CFLAGS $($cflags_filter "$@")
672 }
673
674 add_asflags(){
675     append ASFLAGS $($asflags_filter "$@")
676 }
677
678 add_ldflags(){
679     append LDFLAGS $($ldflags_filter "$@")
680 }
681
682 add_stripflags(){
683     append STRIPFLAGS "$@"
684 }
685
686 add_extralibs(){
687     prepend extralibs $($ldflags_filter "$@")
688 }
689
690 add_host_cppflags(){
691     append host_cppflags "$@"
692 }
693
694 add_host_cflags(){
695     append host_cflags $($host_cflags_filter "$@")
696 }
697
698 add_host_ldflags(){
699     append host_ldflags $($host_ldflags_filter "$@")
700 }
701
702 add_compat(){
703     append compat_objs $1
704     shift
705     map 'add_cppflags -D$v' "$@"
706 }
707
708 check_cmd(){
709     log "$@"
710     "$@" >> $logfile 2>&1
711 }
712
713 cc_o(){
714     eval printf '%s\\n' $CC_O
715 }
716
717 cc_e(){
718     eval printf '%s\\n' $CC_E
719 }
720
721 check_cc(){
722     log check_cc "$@"
723     cat > $TMPC
724     log_file $TMPC
725     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
726 }
727
728 check_cpp(){
729     log check_cpp "$@"
730     cat > $TMPC
731     log_file $TMPC
732     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
733 }
734
735 as_o(){
736     eval printf '%s\\n' $AS_O
737 }
738
739 check_as(){
740     log check_as "$@"
741     cat > $TMPS
742     log_file $TMPS
743     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
744 }
745
746 check_inline_asm(){
747     log check_inline_asm "$@"
748     name="$1"
749     code="$2"
750     shift 2
751     disable $name
752     check_cc "$@" <<EOF && enable $name
753 void foo(void){ __asm__ volatile($code); }
754 EOF
755 }
756
757 check_insn(){
758     log check_insn "$@"
759     check_inline_asm ${1}_inline "\"$2\""
760     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
761 }
762
763 check_yasm(){
764     log check_yasm "$@"
765     echo "$1" > $TMPS
766     log_file $TMPS
767     shift 1
768     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
769 }
770
771 ld_o(){
772     eval printf '%s\\n' $LD_O
773 }
774
775 check_ld(){
776     log check_ld "$@"
777     flags=$(filter_out '-l*' "$@")
778     libs=$(filter '-l*' "$@")
779     check_cc $($cflags_filter $flags) || return
780     flags=$($ldflags_filter $flags)
781     libs=$($ldflags_filter $libs)
782     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
783 }
784
785 print_include(){
786     hdr=$1
787     test "${hdr%.h}" = "${hdr}" &&
788         echo "#include $hdr"    ||
789         echo "#include <$hdr>"
790 }
791
792 check_code(){
793     log check_code "$@"
794     check=$1
795     headers=$2
796     code=$3
797     shift 3
798     {
799         for hdr in $headers; do
800             print_include $hdr
801         done
802         echo "int main(void) { $code; return 0; }"
803     } | check_$check "$@"
804 }
805
806 check_cppflags(){
807     log check_cppflags "$@"
808     check_cc "$@" <<EOF && append CPPFLAGS "$@"
809 int x;
810 EOF
811 }
812
813 test_cflags(){
814     log test_cflags "$@"
815     set -- $($cflags_filter "$@")
816     check_cc "$@" <<EOF
817 int x;
818 EOF
819 }
820
821 check_cflags(){
822     log check_cflags "$@"
823     test_cflags "$@" && add_cflags "$@"
824 }
825
826 test_ldflags(){
827     log test_ldflags "$@"
828     check_ld "$@" <<EOF
829 int main(void){ return 0; }
830 EOF
831 }
832
833 check_ldflags(){
834     log check_ldflags "$@"
835     test_ldflags "$@" && add_ldflags "$@"
836 }
837
838 test_stripflags(){
839     log test_stripflags "$@"
840     # call check_cc to get a fresh TMPO
841     check_cc <<EOF
842 int main(void) { return 0; }
843 EOF
844     check_cmd $strip $STRIPFLAGS "$@" $TMPO
845 }
846
847 check_stripflags(){
848     log check_stripflags "$@"
849     test_stripflags "$@" && add_stripflags "$@"
850 }
851
852 check_header(){
853     log check_header "$@"
854     header=$1
855     shift
856     disable_safe $header
857     check_cpp "$@" <<EOF && enable_safe $header
858 #include <$header>
859 int x;
860 EOF
861 }
862
863 check_func(){
864     log check_func "$@"
865     func=$1
866     shift
867     disable $func
868     check_ld "$@" <<EOF && enable $func
869 extern int $func();
870 int main(void){ $func(); }
871 EOF
872 }
873
874 check_mathfunc(){
875     log check_mathfunc "$@"
876     func=$1
877     narg=$2
878     shift 2
879     test $narg = 2 && args="f, g" || args="f"
880     disable $func
881     check_ld "$@" <<EOF && enable $func
882 #include <math.h>
883 float foo(float f, float g) { return $func($args); }
884 int main(void){ return 0; }
885 EOF
886 }
887
888 check_func_headers(){
889     log check_func_headers "$@"
890     headers=$1
891     funcs=$2
892     shift 2
893     {
894         for hdr in $headers; do
895             print_include $hdr
896         done
897         for func in $funcs; do
898             echo "long check_$func(void) { return (long) $func; }"
899         done
900         echo "int main(void) { return 0; }"
901     } | check_ld "$@" && enable $funcs && enable_safe $headers
902 }
903
904 check_cpp_condition(){
905     log check_cpp_condition "$@"
906     header=$1
907     condition=$2
908     shift 2
909     check_cpp "$@" <<EOF
910 #include <$header>
911 #if !($condition)
912 #error "unsatisfied condition: $condition"
913 #endif
914 EOF
915 }
916
917 check_lib(){
918     log check_lib "$@"
919     header="$1"
920     func="$2"
921     shift 2
922     check_header $header && check_func $func "$@" && add_extralibs "$@"
923 }
924
925 check_lib2(){
926     log check_lib2 "$@"
927     headers="$1"
928     funcs="$2"
929     shift 2
930     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
931 }
932
933 check_pkg_config(){
934     log check_pkg_config "$@"
935     pkg="$1"
936     headers="$2"
937     funcs="$3"
938     shift 3
939     check_cmd $pkg_config --exists --print-errors $pkg || return
940     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
941     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
942     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
943         set_safe ${pkg}_cflags $pkg_cflags   &&
944         set_safe ${pkg}_libs   $pkg_libs
945 }
946
947 check_exec(){
948     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
949 }
950
951 check_exec_crash(){
952     code=$(cat)
953
954     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
955     # are safe but may not be available everywhere.  Thus we use
956     # raise(SIGTERM) instead.  The check is run in a subshell so we
957     # can redirect the "Terminated" message from the shell.  SIGBUS
958     # is not defined by standard C so it is used conditionally.
959
960     (check_exec "$@") >> $logfile 2>&1 <<EOF
961 #include <signal.h>
962 static void sighandler(int sig){
963     raise(SIGTERM);
964 }
965 int foo(void){
966     $code
967 }
968 int (*func_ptr)(void) = foo;
969 int main(void){
970     signal(SIGILL, sighandler);
971     signal(SIGFPE, sighandler);
972     signal(SIGSEGV, sighandler);
973 #ifdef SIGBUS
974     signal(SIGBUS, sighandler);
975 #endif
976     return func_ptr();
977 }
978 EOF
979 }
980
981 check_type(){
982     log check_type "$@"
983     headers=$1
984     type=$2
985     shift 2
986     disable_safe "$type"
987     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
988 }
989
990 check_struct(){
991     log check_struct "$@"
992     headers=$1
993     struct=$2
994     member=$3
995     shift 3
996     disable_safe "${struct}_${member}"
997     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
998         enable_safe "${struct}_${member}"
999 }
1000
1001 check_builtin(){
1002     log check_builtin "$@"
1003     name=$1
1004     headers=$2
1005     builtin=$3
1006     shift 3
1007     disable "$name"
1008     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1009 }
1010
1011 check_compile_assert(){
1012     log check_compile_assert "$@"
1013     name=$1
1014     headers=$2
1015     condition=$3
1016     shift 3
1017     disable "$name"
1018     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1019 }
1020
1021 require(){
1022     name="$1"
1023     header="$2"
1024     func="$3"
1025     shift 3
1026     check_lib $header $func "$@" || die "ERROR: $name not found"
1027 }
1028
1029 require2(){
1030     name="$1"
1031     headers="$2"
1032     func="$3"
1033     shift 3
1034     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1035 }
1036
1037 require_pkg_config(){
1038     pkg="$1"
1039     check_pkg_config "$@" || die "ERROR: $pkg not found"
1040     add_cflags    $(get_safe ${pkg}_cflags)
1041     add_extralibs $(get_safe ${pkg}_libs)
1042 }
1043
1044 hostcc_e(){
1045     eval printf '%s\\n' $HOSTCC_E
1046 }
1047
1048 hostcc_o(){
1049     eval printf '%s\\n' $HOSTCC_O
1050 }
1051
1052 check_host_cc(){
1053     log check_host_cc "$@"
1054     cat > $TMPC
1055     log_file $TMPC
1056     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1057 }
1058
1059 check_host_cpp(){
1060     log check_host_cpp "$@"
1061     cat > $TMPC
1062     log_file $TMPC
1063     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1064 }
1065
1066 check_host_cppflags(){
1067     log check_host_cppflags "$@"
1068     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1069 int x;
1070 EOF
1071 }
1072
1073 check_host_cflags(){
1074     log check_host_cflags "$@"
1075     set -- $($host_cflags_filter "$@")
1076     check_host_cc "$@" <<EOF && append host_cflags "$@"
1077 int x;
1078 EOF
1079 }
1080
1081 check_host_cpp_condition(){
1082     log check_host_cpp_condition "$@"
1083     header=$1
1084     condition=$2
1085     shift 2
1086     check_host_cpp "$@" <<EOF
1087 #include <$header>
1088 #if !($condition)
1089 #error "unsatisfied condition: $condition"
1090 #endif
1091 EOF
1092 }
1093
1094 apply(){
1095     file=$1
1096     shift
1097     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1098 }
1099
1100 cp_if_changed(){
1101     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1102     mkdir -p "$(dirname $2)"
1103     $cp_f "$1" "$2"
1104 }
1105
1106 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1107 # system-dependent things.
1108
1109 COMPONENT_LIST="
1110     bsfs
1111     decoders
1112     demuxers
1113     encoders
1114     filters
1115     hwaccels
1116     indevs
1117     muxers
1118     outdevs
1119     parsers
1120     protocols
1121 "
1122
1123 EXAMPLE_LIST="
1124     avcodec_example
1125     filter_audio_example
1126     metadata_example
1127     output_example
1128     transcode_aac_example
1129 "
1130
1131 EXTERNAL_LIBRARY_LIST="
1132     avisynth
1133     bzlib
1134     frei0r
1135     gnutls
1136     libbs2b
1137     libcdio
1138     libdc1394
1139     libfaac
1140     libfdk_aac
1141     libfontconfig
1142     libfreetype
1143     libgsm
1144     libilbc
1145     libmp3lame
1146     libopencore_amrnb
1147     libopencore_amrwb
1148     libopencv
1149     libopenjpeg
1150     libopus
1151     libpulse
1152     librtmp
1153     libschroedinger
1154     libspeex
1155     libtheora
1156     libtwolame
1157     libvo_aacenc
1158     libvo_amrwbenc
1159     libvorbis
1160     libvpx
1161     libwavpack
1162     libwebp
1163     libx264
1164     libx265
1165     libxavs
1166     libxvid
1167     openssl
1168     x11grab
1169     zlib
1170 "
1171
1172 FEATURE_LIST="
1173     gray
1174     hardcoded_tables
1175     runtime_cpudetect
1176     safe_bitstream_reader
1177     shared
1178     small
1179     sram
1180     static
1181     swscale_alpha
1182 "
1183
1184 HWACCEL_LIST="
1185     dxva2
1186     vaapi
1187     vda
1188     vdpau
1189 "
1190
1191 LIBRARY_LIST="
1192     avcodec
1193     avdevice
1194     avfilter
1195     avformat
1196     avresample
1197     avutil
1198     swscale
1199 "
1200
1201 LICENSE_LIST="
1202     gpl
1203     nonfree
1204     version3
1205 "
1206
1207 PROGRAM_LIST="
1208     avconv
1209     avplay
1210     avprobe
1211 "
1212
1213 SUBSYSTEM_LIST="
1214     dct
1215     doc
1216     error_resilience
1217     fft
1218     lsp
1219     lzo
1220     mdct
1221     network
1222     rdft
1223 "
1224
1225 CONFIG_LIST="
1226     $COMPONENT_LIST
1227     $EXAMPLE_LIST
1228     $EXTERNAL_LIBRARY_LIST
1229     $FEATURE_LIST
1230     $HWACCEL_LIST
1231     $LICENSE_LIST
1232     $LIBRARY_LIST
1233     $PROGRAM_LIST
1234     $SUBSYSTEM_LIST
1235     memalign_hack
1236     neon_clobber_test
1237     pic
1238     pod2man
1239     texi2html
1240     thumb
1241     xmm_clobber_test
1242 "
1243
1244 THREADS_LIST="
1245     pthreads
1246     w32threads
1247 "
1248
1249 ATOMICS_LIST="
1250     atomics_gcc
1251     atomics_suncc
1252     atomics_win32
1253 "
1254
1255 ARCH_LIST="
1256     aarch64
1257     alpha
1258     arm
1259     avr32
1260     avr32_ap
1261     avr32_uc
1262     bfin
1263     ia64
1264     m68k
1265     mips
1266     mips64
1267     parisc
1268     ppc
1269     ppc64
1270     s390
1271     sh4
1272     sparc
1273     sparc64
1274     tilegx
1275     tilepro
1276     tomi
1277     x86
1278     x86_32
1279     x86_64
1280 "
1281
1282 ARCH_EXT_LIST_ARM="
1283     armv5te
1284     armv6
1285     armv6t2
1286     armv8
1287     neon
1288     vfp
1289     vfpv3
1290 "
1291
1292 ARCH_EXT_LIST_X86_SIMD="
1293     amd3dnow
1294     amd3dnowext
1295     avx
1296     avx2
1297     fma3
1298     fma4
1299     mmx
1300     mmxext
1301     sse
1302     sse2
1303     sse3
1304     sse4
1305     sse42
1306     ssse3
1307     xop
1308 "
1309
1310 ARCH_EXT_LIST_PPC="
1311     altivec
1312     dcbzl
1313     ldbrx
1314     ppc4xx
1315 "
1316
1317 ARCH_EXT_LIST_X86="
1318     $ARCH_EXT_LIST_X86_SIMD
1319     cpunop
1320     i686
1321 "
1322
1323 ARCH_EXT_LIST="
1324     $ARCH_EXT_LIST_ARM
1325     $ARCH_EXT_LIST_PPC
1326     $ARCH_EXT_LIST_X86
1327     loongson
1328     vis
1329 "
1330
1331 ARCH_FEATURES="
1332     aligned_stack
1333     fast_64bit
1334     fast_clz
1335     fast_cmov
1336     local_aligned_8
1337     local_aligned_16
1338 "
1339
1340 BUILTIN_LIST="
1341     atomic_cas_ptr
1342     machine_rw_barrier
1343     MemoryBarrier
1344     mm_empty
1345     rdtsc
1346     sync_val_compare_and_swap
1347 "
1348 HAVE_LIST_CMDLINE="
1349     inline_asm
1350     symver
1351     yasm
1352 "
1353
1354 HAVE_LIST_PUB="
1355     bigendian
1356     fast_unaligned
1357 "
1358
1359 HEADERS_LIST="
1360     alsa_asoundlib_h
1361     altivec_h
1362     arpa_inet_h
1363     cdio_paranoia_h
1364     cdio_paranoia_paranoia_h
1365     dev_bktr_ioctl_bt848_h
1366     dev_bktr_ioctl_meteor_h
1367     dev_ic_bt8xx_h
1368     dev_video_bktr_ioctl_bt848_h
1369     dev_video_meteor_ioctl_meteor_h
1370     direct_h
1371     dlfcn_h
1372     dxva_h
1373     gsm_h
1374     io_h
1375     mach_mach_time_h
1376     machine_ioctl_bt848_h
1377     machine_ioctl_meteor_h
1378     malloc_h
1379     poll_h
1380     sndio_h
1381     soundcard_h
1382     sys_mman_h
1383     sys_param_h
1384     sys_resource_h
1385     sys_select_h
1386     sys_soundcard_h
1387     sys_time_h
1388     sys_un_h
1389     sys_videoio_h
1390     unistd_h
1391     windows_h
1392     winsock2_h
1393 "
1394
1395 MATH_FUNCS="
1396     atanf
1397     atan2f
1398     cbrtf
1399     cosf
1400     exp2
1401     exp2f
1402     expf
1403     isinf
1404     isnan
1405     ldexpf
1406     llrint
1407     llrintf
1408     log2
1409     log2f
1410     log10f
1411     lrint
1412     lrintf
1413     powf
1414     rint
1415     round
1416     roundf
1417     sinf
1418     trunc
1419     truncf
1420 "
1421
1422 SYSTEM_FUNCS="
1423     aligned_malloc
1424     closesocket
1425     CommandLineToArgvW
1426     CoTaskMemFree
1427     CryptGenRandom
1428     dlopen
1429     fcntl
1430     flt_lim
1431     fork
1432     getaddrinfo
1433     gethrtime
1434     getopt
1435     GetProcessAffinityMask
1436     GetProcessMemoryInfo
1437     GetProcessTimes
1438     getrusage
1439     getservbyport
1440     GetSystemTimeAsFileTime
1441     gettimeofday
1442     inet_aton
1443     isatty
1444     jack_port_get_latency_range
1445     localtime_r
1446     mach_absolute_time
1447     MapViewOfFile
1448     memalign
1449     mkstemp
1450     mmap
1451     mprotect
1452     nanosleep
1453     posix_memalign
1454     sched_getaffinity
1455     SetConsoleTextAttribute
1456     setmode
1457     setrlimit
1458     Sleep
1459     strerror_r
1460     strptime
1461     sysconf
1462     sysctl
1463     usleep
1464     VirtualAlloc
1465 "
1466
1467 TOOLCHAIN_FEATURES="
1468     as_dn_directive
1469     as_func
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     audiodsp
1533     blockdsp
1534     cabac
1535     dsputil
1536     gcrypt
1537     golomb
1538     gplv3
1539     h263dsp
1540     h264chroma
1541     h264dsp
1542     h264pred
1543     h264qpel
1544     hpeldsp
1545     huffman
1546     huffyuvdsp
1547     huffyuvencdsp
1548     intrax8
1549     lgplv3
1550     lpc
1551     mpegaudio
1552     mpegaudiodsp
1553     mpegvideo
1554     mpegvideoenc
1555     nettle
1556     qpeldsp
1557     rangecoder
1558     riffdec
1559     riffenc
1560     rtpdec
1561     rtpenc_chain
1562     sinewin
1563     tpeldsp
1564     videodsp
1565     vp3dsp
1566 "
1567
1568 CMDLINE_SELECT="
1569     $ARCH_EXT_LIST
1570     $CONFIG_LIST
1571     $HAVE_LIST_CMDLINE
1572     $THREADS_LIST
1573     asm
1574     cross_compile
1575     debug
1576     extra_warnings
1577     logging
1578     lto
1579     optimizations
1580 "
1581
1582 PATHS_LIST="
1583     bindir
1584     datadir
1585     docdir
1586     incdir
1587     libdir
1588     mandir
1589     prefix
1590     shlibdir
1591 "
1592
1593 CMDLINE_SET="
1594     $PATHS_LIST
1595     ar
1596     arch
1597     as
1598     build_suffix
1599     cc
1600     cpu
1601     cross_prefix
1602     dep_cc
1603     extra_version
1604     host_cc
1605     host_cflags
1606     host_ld
1607     host_ldflags
1608     host_libs
1609     host_os
1610     ld
1611     logfile
1612     malloc_prefix
1613     nm
1614     optflags
1615     pkg_config
1616     pkg_config_flags
1617     random_seed
1618     samples
1619     sysinclude
1620     sysroot
1621     target_exec
1622     target_os
1623     target_path
1624     target_samples
1625     toolchain
1626 "
1627
1628 CMDLINE_APPEND="
1629     extra_cflags
1630     host_cppflags
1631 "
1632
1633 # code dependency declarations
1634
1635 # architecture extensions
1636
1637 armv5te_deps="arm"
1638 armv6_deps="arm"
1639 armv6t2_deps="arm"
1640 armv8_deps="aarch64"
1641 neon_deps_any="aarch64 arm"
1642 vfp_deps_any="aarch64 arm"
1643 vfpv3_deps="vfp"
1644
1645 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1646
1647 altivec_deps="ppc"
1648 ppc4xx_deps="ppc"
1649
1650 cpunop_deps="i686"
1651 x86_64_select="i686"
1652 x86_64_suggest="fast_cmov"
1653
1654 amd3dnow_deps="mmx"
1655 amd3dnowext_deps="amd3dnow"
1656 i686_deps="x86"
1657 mmx_deps="x86"
1658 mmxext_deps="mmx"
1659 sse_deps="mmxext"
1660 sse2_deps="sse"
1661 sse3_deps="sse2"
1662 ssse3_deps="sse3"
1663 sse4_deps="ssse3"
1664 sse42_deps="sse4"
1665 avx_deps="sse42"
1666 xop_deps="avx"
1667 fma3_deps="avx"
1668 fma4_deps="avx"
1669 avx2_deps="avx"
1670
1671 mmx_external_deps="yasm"
1672 mmx_inline_deps="inline_asm"
1673 mmx_suggest="mmx_external mmx_inline"
1674
1675 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1676     eval dep=\$${ext}_deps
1677     eval ${ext}_external_deps='"${dep}_external"'
1678     eval ${ext}_inline_deps='"${dep}_inline"'
1679     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1680 done
1681
1682 aligned_stack_if_any="aarch64 ppc x86"
1683 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1684 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1685 fast_unaligned_if_any="aarch64 ppc x86"
1686
1687 need_memalign="altivec neon sse"
1688
1689 # system capabilities
1690 log2_deps="!libc_msvcrt"
1691
1692 symver_if_any="symver_asm_label symver_gnu_asm"
1693
1694 # threading support
1695 atomics_gcc_if="sync_val_compare_and_swap"
1696 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1697 atomics_win32_if="MemoryBarrier"
1698 atomics_native_if_any="$ATOMICS_LIST"
1699 w32threads_deps="atomics_native"
1700 threads_if_any="$THREADS_LIST"
1701
1702 # subsystems
1703 dct_select="rdft"
1704 error_resilience_select="dsputil"
1705 intrax8_select="error_resilience"
1706 mdct_select="fft"
1707 rdft_select="fft"
1708 mpegaudio_select="mpegaudiodsp"
1709 mpegaudiodsp_select="dct"
1710 mpegvideo_select="blockdsp dsputil hpeldsp videodsp"
1711 mpegvideoenc_select="dsputil mpegvideo qpeldsp"
1712
1713 # decoders / encoders
1714 aac_decoder_select="mdct sinewin"
1715 aac_encoder_select="audio_frame_queue mdct sinewin"
1716 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1717 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1718 ac3_encoder_select="ac3dsp audiodsp dsputil mdct"
1719 ac3_fixed_encoder_select="ac3dsp audiodsp dsputil mdct"
1720 aic_decoder_select="dsputil golomb"
1721 alac_encoder_select="lpc"
1722 als_decoder_select="dsputil"
1723 amrnb_decoder_select="lsp"
1724 amrwb_decoder_select="lsp"
1725 amv_decoder_select="sp5x_decoder"
1726 ape_decoder_select="dsputil"
1727 asv1_decoder_select="blockdsp dsputil"
1728 asv1_encoder_select="dsputil"
1729 asv2_decoder_select="blockdsp dsputil"
1730 asv2_encoder_select="dsputil"
1731 atrac1_decoder_select="mdct sinewin"
1732 atrac3_decoder_select="mdct"
1733 atrac3p_decoder_select="mdct sinewin"
1734 bink_decoder_select="blockdsp hpeldsp"
1735 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1736 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1737 cavs_decoder_select="blockdsp dsputil golomb h264chroma qpeldsp videodsp"
1738 cllc_decoder_select="dsputil"
1739 comfortnoise_encoder_select="lpc"
1740 cook_decoder_select="audiodsp mdct sinewin"
1741 cscd_decoder_select="lzo"
1742 cscd_decoder_suggest="zlib"
1743 dca_decoder_select="mdct"
1744 dnxhd_decoder_select="blockdsp dsputil"
1745 dnxhd_encoder_select="aandcttables blockdsp dsputil mpegvideoenc"
1746 dvvideo_decoder_select="dsputil"
1747 dvvideo_encoder_select="dsputil"
1748 dxa_decoder_deps="zlib"
1749 eac3_decoder_select="ac3_decoder"
1750 eac3_encoder_select="ac3_encoder"
1751 eamad_decoder_select="aandcttables blockdsp dsputil mpegvideo"
1752 eatgq_decoder_select="aandcttables dsputil"
1753 eatqi_decoder_select="aandcttables blockdsp dsputil mpeg1video_decoder"
1754 exr_decoder_deps="zlib"
1755 ffv1_decoder_select="golomb rangecoder"
1756 ffv1_encoder_select="rangecoder"
1757 ffvhuff_decoder_select="huffyuv_decoder"
1758 ffvhuff_encoder_select="huffyuv_encoder"
1759 fic_decoder_select="golomb"
1760 flac_decoder_select="golomb"
1761 flac_encoder_select="dsputil golomb lpc"
1762 flashsv_decoder_deps="zlib"
1763 flashsv_encoder_deps="zlib"
1764 flashsv2_decoder_deps="zlib"
1765 flv_decoder_select="h263_decoder"
1766 flv_encoder_select="h263_encoder"
1767 fourxm_decoder_select="blockdsp dsputil"
1768 fraps_decoder_select="dsputil huffman"
1769 g2m_decoder_deps="zlib"
1770 g2m_decoder_select="blockdsp dsputil"
1771 h261_decoder_select="error_resilience mpegvideo"
1772 h261_encoder_select="aandcttables mpegvideoenc"
1773 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo qpeldsp"
1774 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1775 h263i_decoder_select="h263_decoder"
1776 h263p_encoder_select="h263_encoder"
1777 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
1778 h264_decoder_suggest="error_resilience"
1779 hevc_decoder_select="cabac dsputil golomb videodsp"
1780 huffyuv_decoder_select="dsputil huffyuvdsp"
1781 huffyuv_encoder_select="dsputil huffman huffyuvencdsp"
1782 iac_decoder_select="imc_decoder"
1783 imc_decoder_select="dsputil fft mdct sinewin"
1784 indeo3_decoder_select="hpeldsp"
1785 interplay_video_decoder_select="hpeldsp"
1786 jpegls_decoder_select="golomb mjpeg_decoder"
1787 jpegls_encoder_select="golomb"
1788 jv_decoder_select="blockdsp"
1789 lagarith_decoder_select="huffyuvdsp"
1790 ljpeg_encoder_select="aandcttables mpegvideoenc"
1791 loco_decoder_select="golomb"
1792 mdec_decoder_select="blockdsp dsputil mpegvideo"
1793 metasound_decoder_select="lsp mdct sinewin"
1794 mimic_decoder_select="blockdsp dsputil hpeldsp"
1795 mjpeg_decoder_select="blockdsp dsputil hpeldsp"
1796 mjpeg_encoder_select="aandcttables mpegvideoenc"
1797 mjpegb_decoder_select="mjpeg_decoder"
1798 mlp_decoder_select="mlp_parser"
1799 motionpixels_decoder_select="dsputil"
1800 mp1_decoder_select="mpegaudio"
1801 mp1float_decoder_select="mpegaudio"
1802 mp2_decoder_select="mpegaudio"
1803 mp2float_decoder_select="mpegaudio"
1804 mp3_decoder_select="mpegaudio"
1805 mp3adu_decoder_select="mpegaudio"
1806 mp3adufloat_decoder_select="mpegaudio"
1807 mp3float_decoder_select="mpegaudio"
1808 mp3on4_decoder_select="mpegaudio"
1809 mp3on4float_decoder_select="mpegaudio"
1810 mpc7_decoder_select="dsputil mpegaudiodsp"
1811 mpc8_decoder_select="mpegaudiodsp"
1812 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1813 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1814 mpeg1video_decoder_select="error_resilience mpegvideo"
1815 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1816 mpeg2video_decoder_select="error_resilience mpegvideo"
1817 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1818 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1819 mpeg4_encoder_select="h263_encoder"
1820 msmpeg4v1_decoder_select="h263_decoder"
1821 msmpeg4v2_decoder_select="h263_decoder"
1822 msmpeg4v2_encoder_select="h263_encoder"
1823 msmpeg4v3_decoder_select="h263_decoder"
1824 msmpeg4v3_encoder_select="h263_encoder"
1825 mss2_decoder_select="error_resilience qpeldsp vc1_decoder"
1826 mxpeg_decoder_select="mjpeg_decoder"
1827 nellymoser_decoder_select="mdct sinewin"
1828 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1829 nuv_decoder_select="dsputil lzo"
1830 on2avc_decoder_select="mdct"
1831 opus_decoder_deps="avresample"
1832 png_decoder_deps="zlib"
1833 png_encoder_deps="zlib"
1834 png_encoder_select="huffyuvencdsp"
1835 prores_decoder_select="dsputil"
1836 prores_encoder_select="dsputil"
1837 qcelp_decoder_select="lsp"
1838 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1839 ra_144_encoder_select="audio_frame_queue lpc"
1840 ralf_decoder_select="golomb"
1841 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1842 rv10_encoder_select="h263_encoder"
1843 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1844 rv20_encoder_select="h263_encoder"
1845 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1846 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1847 shorten_decoder_select="golomb"
1848 sipr_decoder_select="lsp"
1849 sp5x_decoder_select="mjpeg_decoder"
1850 svq1_decoder_select="hpeldsp"
1851 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1852 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1853 svq3_decoder_suggest="zlib"
1854 tak_decoder_select="audiodsp"
1855 theora_decoder_select="vp3_decoder"
1856 thp_decoder_select="mjpeg_decoder"
1857 tiff_decoder_suggest="zlib"
1858 tiff_encoder_suggest="zlib"
1859 truehd_decoder_select="mlp_decoder"
1860 truemotion2_decoder_select="dsputil"
1861 truespeech_decoder_select="dsputil"
1862 tscc_decoder_deps="zlib"
1863 twinvq_decoder_select="mdct lsp sinewin"
1864 utvideo_decoder_select="dsputil"
1865 utvideo_encoder_select="dsputil huffman huffyuvencdsp"
1866 vble_decoder_select="huffyuvdsp"
1867 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 qpeldsp"
1868 vc1image_decoder_select="vc1_decoder"
1869 vorbis_decoder_select="mdct"
1870 vorbis_encoder_select="mdct"
1871 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1872 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1873 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1874 vp6a_decoder_select="vp6_decoder"
1875 vp6f_decoder_select="vp6_decoder"
1876 vp7_decoder_select="h264pred videodsp"
1877 vp8_decoder_select="h264pred videodsp"
1878 vp9_decoder_select="videodsp"
1879 webp_decoder_select="vp8_decoder"
1880 wmapro_decoder_select="mdct sinewin"
1881 wmav1_decoder_select="mdct sinewin"
1882 wmav1_encoder_select="mdct sinewin"
1883 wmav2_decoder_select="mdct sinewin"
1884 wmav2_encoder_select="mdct sinewin"
1885 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1886 wmv1_decoder_select="h263_decoder"
1887 wmv1_encoder_select="h263_encoder"
1888 wmv2_decoder_select="blockdsp h263_decoder intrax8 videodsp"
1889 wmv2_encoder_select="h263_encoder"
1890 wmv3_decoder_select="vc1_decoder"
1891 wmv3image_decoder_select="wmv3_decoder"
1892 zerocodec_decoder_deps="zlib"
1893 zlib_decoder_deps="zlib"
1894 zlib_encoder_deps="zlib"
1895 zmbv_decoder_deps="zlib"
1896 zmbv_encoder_deps="zlib"
1897
1898 # hardware accelerators
1899 dxva2_deps="dxva2api_h"
1900 vaapi_deps="va_va_h"
1901 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1902 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1903 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1904
1905 h263_vaapi_hwaccel_deps="vaapi"
1906 h263_vaapi_hwaccel_select="h263_decoder"
1907 h263_vdpau_hwaccel_deps="vdpau"
1908 h263_vdpau_hwaccel_select="h263_decoder"
1909 h264_dxva2_hwaccel_deps="dxva2"
1910 h264_dxva2_hwaccel_select="h264_decoder"
1911 h264_vaapi_hwaccel_deps="vaapi"
1912 h264_vaapi_hwaccel_select="h264_decoder"
1913 h264_vda_hwaccel_deps="vda"
1914 h264_vda_hwaccel_select="h264_decoder"
1915 h264_vda_old_hwaccel_deps="vda"
1916 h264_vda_old_hwaccel_select="h264_decoder"
1917 h264_vdpau_hwaccel_deps="vdpau"
1918 h264_vdpau_hwaccel_select="h264_decoder"
1919 mpeg1_vdpau_hwaccel_deps="vdpau"
1920 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1921 mpeg2_dxva2_hwaccel_deps="dxva2"
1922 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1923 mpeg2_vaapi_hwaccel_deps="vaapi"
1924 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1925 mpeg2_vdpau_hwaccel_deps="vdpau"
1926 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1927 mpeg4_vaapi_hwaccel_deps="vaapi"
1928 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1929 mpeg4_vdpau_hwaccel_deps="vdpau"
1930 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1931 vc1_dxva2_hwaccel_deps="dxva2"
1932 vc1_dxva2_hwaccel_select="vc1_decoder"
1933 vc1_vaapi_hwaccel_deps="vaapi"
1934 vc1_vaapi_hwaccel_select="vc1_decoder"
1935 vc1_vdpau_hwaccel_deps="vdpau"
1936 vc1_vdpau_hwaccel_select="vc1_decoder"
1937 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1938 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1939 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1940
1941 # parsers
1942 h264_parser_select="h264_decoder"
1943 mpegvideo_parser_select="mpegvideo"
1944 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
1945 vc1_parser_select="mpegvideo"
1946
1947 # external libraries
1948 libfaac_encoder_deps="libfaac"
1949 libfaac_encoder_select="audio_frame_queue"
1950 libfdk_aac_decoder_deps="libfdk_aac"
1951 libfdk_aac_encoder_deps="libfdk_aac"
1952 libfdk_aac_encoder_select="audio_frame_queue"
1953 libgsm_decoder_deps="libgsm"
1954 libgsm_encoder_deps="libgsm"
1955 libgsm_ms_decoder_deps="libgsm"
1956 libgsm_ms_encoder_deps="libgsm"
1957 libilbc_decoder_deps="libilbc"
1958 libilbc_encoder_deps="libilbc"
1959 libmp3lame_encoder_deps="libmp3lame"
1960 libmp3lame_encoder_select="audio_frame_queue"
1961 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1962 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1963 libopencore_amrnb_encoder_select="audio_frame_queue"
1964 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1965 libopenjpeg_decoder_deps="libopenjpeg"
1966 libopenjpeg_encoder_deps="libopenjpeg"
1967 libopus_decoder_deps="libopus"
1968 libopus_encoder_deps="libopus"
1969 libopus_encoder_select="audio_frame_queue"
1970 libschroedinger_decoder_deps="libschroedinger"
1971 libschroedinger_encoder_deps="libschroedinger"
1972 libspeex_decoder_deps="libspeex"
1973 libspeex_encoder_deps="libspeex"
1974 libspeex_encoder_select="audio_frame_queue"
1975 libtheora_encoder_deps="libtheora"
1976 libtwolame_encoder_deps="libtwolame"
1977 libvo_aacenc_encoder_deps="libvo_aacenc"
1978 libvo_aacenc_encoder_select="audio_frame_queue"
1979 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1980 libvorbis_encoder_deps="libvorbis"
1981 libvorbis_encoder_select="audio_frame_queue"
1982 libvpx_vp8_decoder_deps="libvpx"
1983 libvpx_vp8_encoder_deps="libvpx"
1984 libvpx_vp9_decoder_deps="libvpx"
1985 libvpx_vp9_encoder_deps="libvpx"
1986 libwavpack_encoder_deps="libwavpack"
1987 libwebp_encoder_deps="libwebp"
1988 libx264_encoder_deps="libx264"
1989 libx265_encoder_deps="libx265"
1990 libxavs_encoder_deps="libxavs"
1991 libxvid_encoder_deps="libxvid"
1992
1993 # demuxers / muxers
1994 ac3_demuxer_select="ac3_parser"
1995 asf_demuxer_select="riffdec"
1996 asf_muxer_select="riffenc"
1997 asf_stream_muxer_select="asf_muxer"
1998 avi_demuxer_select="riffdec"
1999 avi_muxer_select="riffenc"
2000 avisynth_demuxer_deps="avisynth"
2001 avisynth_demuxer_select="riffdec"
2002 caf_demuxer_select="riffdec"
2003 dirac_demuxer_select="dirac_parser"
2004 dxa_demuxer_select="riffdec"
2005 eac3_demuxer_select="ac3_parser"
2006 f4v_muxer_select="mov_muxer"
2007 flac_demuxer_select="flac_parser"
2008 hds_muxer_select="flv_muxer"
2009 hls_muxer_select="mpegts_muxer"
2010 ipod_muxer_select="mov_muxer"
2011 ismv_muxer_select="mov_muxer"
2012 matroska_audio_muxer_select="matroska_muxer"
2013 matroska_demuxer_select="riffdec"
2014 matroska_demuxer_suggest="bzlib lzo zlib"
2015 matroska_muxer_select="riffenc"
2016 mmf_muxer_select="riffenc"
2017 mov_demuxer_select="riffdec"
2018 mov_demuxer_suggest="zlib"
2019 mov_muxer_select="riffenc rtpenc_chain"
2020 mp3_demuxer_select="mpegaudio_parser"
2021 mp4_muxer_select="mov_muxer"
2022 mpegts_muxer_select="adts_muxer latm_muxer"
2023 mpegtsraw_demuxer_select="mpegts_demuxer"
2024 mxf_d10_muxer_select="mxf_muxer"
2025 nut_muxer_select="riffenc"
2026 nuv_demuxer_select="riffdec"
2027 ogg_demuxer_select="golomb"
2028 psp_muxer_select="mov_muxer"
2029 rtp_demuxer_select="sdp_demuxer"
2030 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2031 rtsp_demuxer_select="http_protocol rtpdec"
2032 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2033 sap_demuxer_select="sdp_demuxer"
2034 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2035 sdp_demuxer_select="rtpdec"
2036 smoothstreaming_muxer_select="ismv_muxer"
2037 spdif_muxer_select="aac_parser"
2038 tak_demuxer_select="tak_parser"
2039 tg2_muxer_select="mov_muxer"
2040 tgp_muxer_select="mov_muxer"
2041 w64_demuxer_select="wav_demuxer"
2042 wav_demuxer_select="riffdec"
2043 wav_muxer_select="riffenc"
2044 webm_muxer_select="riffenc"
2045 wtv_demuxer_select="riffdec"
2046 xmv_demuxer_select="riffdec"
2047 xwma_demuxer_select="riffdec"
2048
2049 # indevs / outdevs
2050 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2051 alsa_outdev_deps="alsa_asoundlib_h"
2052 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2053 dv1394_indev_deps="dv1394"
2054 dv1394_indev_select="dv_demuxer"
2055 fbdev_indev_deps="linux_fb_h"
2056 jack_indev_deps="jack_jack_h pthreads"
2057 libcdio_indev_deps="libcdio"
2058 libdc1394_indev_deps="libdc1394"
2059 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2060 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2061 pulse_indev_deps="libpulse"
2062 sndio_indev_deps="sndio_h"
2063 sndio_outdev_deps="sndio_h"
2064 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2065 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2066 vfwcap_indev_extralibs="-lavicap32"
2067 x11grab_indev_deps="x11grab XShmCreateImage"
2068
2069 # protocols
2070 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2071 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2072 ffrtmpcrypt_protocol_select="tcp_protocol"
2073 ffrtmphttp_protocol_deps="!librtmp_protocol"
2074 ffrtmphttp_protocol_select="http_protocol"
2075 gopher_protocol_select="network"
2076 http_protocol_select="tcp_protocol"
2077 httpproxy_protocol_select="tcp_protocol"
2078 https_protocol_select="tls_protocol"
2079 librtmp_protocol_deps="librtmp"
2080 librtmpe_protocol_deps="librtmp"
2081 librtmps_protocol_deps="librtmp"
2082 librtmpt_protocol_deps="librtmp"
2083 librtmpte_protocol_deps="librtmp"
2084 mmsh_protocol_select="http_protocol"
2085 mmst_protocol_select="network"
2086 rtmp_protocol_deps="!librtmp_protocol"
2087 rtmp_protocol_select="tcp_protocol"
2088 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2089 rtmps_protocol_deps="!librtmp_protocol"
2090 rtmps_protocol_select="tls_protocol"
2091 rtmpt_protocol_select="ffrtmphttp_protocol"
2092 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2093 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2094 rtp_protocol_select="udp_protocol"
2095 sctp_protocol_deps="struct_sctp_event_subscribe"
2096 sctp_protocol_select="network"
2097 srtp_protocol_select="rtp_protocol"
2098 tcp_protocol_select="network"
2099 tls_protocol_deps_any="openssl gnutls"
2100 tls_protocol_select="tcp_protocol"
2101 udp_protocol_select="network"
2102 unix_protocol_deps="sys_un_h"
2103 unix_protocol_select="network"
2104
2105 # filters
2106 blackframe_filter_deps="gpl"
2107 boxblur_filter_deps="gpl"
2108 bs2b_filter_deps="libbs2b"
2109 cropdetect_filter_deps="gpl"
2110 delogo_filter_deps="gpl"
2111 drawtext_filter_deps="libfreetype"
2112 frei0r_filter_deps="frei0r dlopen"
2113 frei0r_filter_extralibs='$ldl'
2114 frei0r_src_filter_deps="frei0r dlopen"
2115 frei0r_src_filter_extralibs='$ldl'
2116 hqdn3d_filter_deps="gpl"
2117 interlace_filter_deps="gpl"
2118 ocv_filter_deps="libopencv"
2119 resample_filter_deps="avresample"
2120 scale_filter_deps="swscale"
2121
2122 # examples
2123 avcodec_example_deps="avcodec avutil"
2124 filter_audio_example_deps="avfilter avutil"
2125 metadata_example_deps="avformat avutil"
2126 output_example_deps="avcodec avformat avutil swscale"
2127 transcode_aac_example_deps="avcodec avformat avresample"
2128
2129 # libraries, in linking order
2130 avcodec_deps="avutil"
2131 avdevice_deps="avformat avcodec avutil"
2132 avfilter_deps="avutil"
2133 avformat_deps="avcodec avutil"
2134 avresample_deps="avutil"
2135 swscale_deps="avutil"
2136
2137 # programs
2138 avconv_deps="avcodec avfilter avformat avresample swscale"
2139 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2140                fps_filter null_filter resample_filter scale_filter
2141                setpts_filter trim_filter"
2142 avplay_deps="avcodec avformat avresample swscale sdl"
2143 avplay_libs='$sdl_libs'
2144 avplay_select="rdft"
2145 avprobe_deps="avcodec avformat"
2146
2147 # documentation
2148 pod2man_deps="doc"
2149 texi2html_deps="doc"
2150
2151 # default parameters
2152
2153 logfile="config.log"
2154
2155 # installation paths
2156 prefix_default="/usr/local"
2157 bindir_default='${prefix}/bin'
2158 datadir_default='${prefix}/share/avconv'
2159 docdir_default='${prefix}/share/doc/libav'
2160 incdir_default='${prefix}/include'
2161 libdir_default='${prefix}/lib'
2162 mandir_default='${prefix}/share/man'
2163 shlibdir_default="$libdir_default"
2164
2165 # toolchain
2166 ar_default="ar"
2167 cc_default="gcc"
2168 host_cc_default="gcc"
2169 cp_f="cp -f"
2170 ln_s="ln -s -f"
2171 nm_default="nm -g"
2172 objformat="elf"
2173 pkg_config_default=pkg-config
2174 ranlib="ranlib"
2175 strip="strip"
2176 yasmexe="yasm"
2177
2178 nogas=":"
2179
2180 # machine
2181 arch_default=$(uname -m)
2182 cpu="generic"
2183
2184 # OS
2185 target_os_default=$(tolower $(uname -s))
2186 host_os=$target_os_default
2187
2188 # configurable options
2189 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2190
2191 enable asm
2192 enable debug
2193 enable doc
2194 enable optimizations
2195 enable safe_bitstream_reader
2196 enable static
2197 enable swscale_alpha
2198
2199 # By default, enable only those hwaccels that have no external dependencies.
2200 enable dxva2 vdpau
2201
2202 # build settings
2203 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2204 LIBPREF="lib"
2205 LIBSUF=".a"
2206 FULLNAME='$(NAME)$(BUILDSUF)'
2207 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2208 SLIBPREF="lib"
2209 SLIBSUF=".so"
2210 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2211 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2212 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2213 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2214 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2215 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2216
2217 asflags_filter=echo
2218 cflags_filter=echo
2219 ldflags_filter=echo
2220
2221 AS_C='-c'
2222 AS_O='-o $@'
2223 CC_C='-c'
2224 CC_E='-E -o $@'
2225 CC_O='-o $@'
2226 LD_O='-o $@'
2227 LD_LIB='-l%'
2228 LD_PATH='-L'
2229 HOSTCC_C='-c'
2230 HOSTCC_E='-E -o $@'
2231 HOSTCC_O='-o $@'
2232 HOSTLD_O='-o $@'
2233
2234 host_libs='-lm'
2235 host_cflags_filter=echo
2236 host_ldflags_filter=echo
2237
2238 target_path='$(CURDIR)'
2239
2240 # since the object filename is not given with the -MM flag, the compiler
2241 # is only able to print the basename, and we must add the path ourselves
2242 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2243 DEPFLAGS='-MM'
2244
2245 # find source path
2246 if test -f configure; then
2247     source_path=.
2248 else
2249     source_path=$(cd $(dirname "$0"); pwd)
2250     echo "$source_path" | grep -q '[[:blank:]]' &&
2251         die "Out of tree builds are impossible with whitespace in source path."
2252     test -e "$source_path/config.h" &&
2253         die "Out of tree builds are impossible with config.h in source dir."
2254 fi
2255
2256 for v in "$@"; do
2257     r=${v#*=}
2258     l=${v%"$r"}
2259     r=$(sh_quote "$r")
2260     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2261 done
2262
2263 find_things(){
2264     thing=$1
2265     pattern=$2
2266     file=$source_path/$3
2267     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2268 }
2269
2270 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2271 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2272 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2273 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2274 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2275 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2276 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2277 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2278 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2279 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2280 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2281
2282 ALL_COMPONENTS="
2283     $BSF_LIST
2284     $DECODER_LIST
2285     $DEMUXER_LIST
2286     $ENCODER_LIST
2287     $FILTER_LIST
2288     $HWACCEL_LIST
2289     $INDEV_LIST
2290     $MUXER_LIST
2291     $OUTDEV_LIST
2292     $PARSER_LIST
2293     $PROTOCOL_LIST
2294 "
2295
2296 for n in $COMPONENT_LIST; do
2297     v=$(toupper ${n%s})_LIST
2298     eval enable \$$v
2299     eval ${n}_if_any="\$$v"
2300 done
2301
2302 enable $ARCH_EXT_LIST
2303
2304 die_unknown(){
2305     echo "Unknown option \"$1\"."
2306     echo "See $0 --help for available options."
2307     exit 1
2308 }
2309
2310 print_3_columns() {
2311     cat | tr ' ' '\n' | sort | pr -r -3 -t
2312 }
2313
2314 show_list() {
2315     suffix=_$1
2316     shift
2317     echo $* | sed s/$suffix//g | print_3_columns
2318     exit 0
2319 }
2320
2321 rand_list(){
2322     IFS=', '
2323     set -- $*
2324     unset IFS
2325     for thing; do
2326         comp=${thing%:*}
2327         prob=${thing#$comp}
2328         prob=${prob#:}
2329         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2330         echo "prob ${prob:-0.5}"
2331         printf '%s\n' $comp
2332     done
2333 }
2334
2335 do_random(){
2336     action=$1
2337     shift
2338     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2339     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2340 }
2341
2342 for opt do
2343     optval="${opt#*=}"
2344     case "$opt" in
2345         --extra-ldflags=*)
2346             add_ldflags $optval
2347         ;;
2348         --extra-libs=*)
2349             add_extralibs $optval
2350         ;;
2351         --disable-devices)
2352             disable $INDEV_LIST $OUTDEV_LIST
2353         ;;
2354         --enable-debug=*)
2355             debuglevel="$optval"
2356         ;;
2357         --disable-programs)
2358             disable $PROGRAM_LIST
2359         ;;
2360         --disable-everything)
2361             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2362         ;;
2363         --disable-all)
2364             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2365             disable $LIBRARY_LIST $PROGRAM_LIST doc
2366         ;;
2367         --enable-random|--disable-random)
2368             action=${opt%%-random}
2369             do_random ${action#--} $COMPONENT_LIST
2370         ;;
2371         --enable-random=*|--disable-random=*)
2372             action=${opt%%-random=*}
2373             do_random ${action#--} $optval
2374         ;;
2375         --enable-*=*|--disable-*=*)
2376             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2377             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2378             eval list=\$$(toupper $thing)_LIST
2379             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2380             $action $(filter "$name" $list)
2381         ;;
2382         --enable-avserver|--disable-avserver*)
2383             warn "avserver has been removed, the ${opt} option is only"\
2384                  "provided for compatibility and will be removed in the future"
2385         ;;
2386         --enable-?*|--disable-?*)
2387             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2388             if is_in $option $COMPONENT_LIST; then
2389                 test $action = disable && action=unset
2390                 eval $action \$$(toupper ${option%s})_LIST
2391             elif is_in $option $CMDLINE_SELECT; then
2392                 $action $option
2393             else
2394                 die_unknown $opt
2395             fi
2396         ;;
2397         --list-*)
2398             NAME="${opt#--list-}"
2399             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2400             NAME=${NAME%s}
2401             eval show_list $NAME \$$(toupper $NAME)_LIST
2402         ;;
2403         --help|-h) show_help
2404         ;;
2405         *)
2406             optname="${opt%%=*}"
2407             optname="${optname#--}"
2408             optname=$(echo "$optname" | sed 's/-/_/g')
2409             if is_in $optname $CMDLINE_SET; then
2410                 eval $optname='$optval'
2411             elif is_in $optname $CMDLINE_APPEND; then
2412                 append $optname "$optval"
2413             else
2414                 die_unknown $opt
2415             fi
2416         ;;
2417     esac
2418 done
2419
2420 disabled logging && logfile=/dev/null
2421
2422 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2423 set >> $logfile
2424
2425 test -n "$cross_prefix" && enable cross_compile
2426
2427 if enabled cross_compile; then
2428     test -n "$arch" && test -n "$target_os" ||
2429         die "Must specify target arch and OS when cross-compiling"
2430 fi
2431
2432 ar_default="${cross_prefix}${ar_default}"
2433 cc_default="${cross_prefix}${cc_default}"
2434 nm_default="${cross_prefix}${nm_default}"
2435 pkg_config_default="${cross_prefix}${pkg_config_default}"
2436 ranlib="${cross_prefix}${ranlib}"
2437 strip="${cross_prefix}${strip}"
2438
2439 sysinclude_default="${sysroot}/usr/include"
2440
2441 case "$toolchain" in
2442     clang-asan)
2443         cc_default="clang"
2444         add_cflags  -fsanitize=address
2445         add_ldflags -fsanitize=address
2446     ;;
2447     clang-tsan)
2448         cc_default="clang"
2449         add_cflags  -fsanitize=thread -pie
2450         add_ldflags -fsanitize=thread -pie
2451     ;;
2452     clang-usan)
2453         cc_default="clang"
2454         add_cflags  -fsanitize=undefined -O1
2455         add_ldflags -fsanitize=undefined
2456     ;;
2457     gcc-asan)
2458         cc_default="gcc"
2459         add_cflags  -fsanitize=address
2460         add_ldflags -fsanitize=address
2461     ;;
2462     gcc-tsan)
2463         cc_default="gcc"
2464         add_cflags  -fsanitize=thread -pie -fPIC
2465         add_ldflags -fsanitize=thread -pie -fPIC
2466     ;;
2467     gcc-usan)
2468         cc_default="gcc"
2469         add_cflags  -fsanitize=undefined
2470         add_ldflags -fsanitize=undefined
2471     ;;
2472     valgrind-massif)
2473         target_exec_default="valgrind"
2474         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2475     ;;
2476     valgrind-memcheck)
2477         target_exec_default="valgrind"
2478         target_exec_args="--track-origins=yes --leak-check=full"
2479     ;;
2480     msvc)
2481         # Check whether the current MSVC version needs the C99 converter.
2482         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2483         # support enough of C99 to build libav. Default to the new
2484         # behaviour if the regexp was unable to match anything, since this
2485         # successfully parses the version number of existing supported
2486         # versions that require the converter (MSVC 2010 and 2012).
2487         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2488         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2489             cc_default="cl"
2490         else
2491             cc_default="c99wrap cl"
2492         fi
2493         ld_default="link"
2494         nm_default="dumpbin -symbols"
2495         ar_default="lib"
2496         target_os_default="win32"
2497         # Use a relative path for TMPDIR. This makes sure all the
2498         # ffconf temp files are written with a relative path, avoiding
2499         # issues with msys/win32 path conversion for MSVC parameters
2500         # such as -Fo<file> or -out:<file>.
2501         TMPDIR=.
2502     ;;
2503     icl)
2504         cc_default="icl"
2505         ld_default="xilink"
2506         nm_default="dumpbin -symbols"
2507         ar_default="xilib"
2508         target_os_default="win32"
2509         TMPDIR=.
2510     ;;
2511     gcov)
2512         add_cflags  -fprofile-arcs -ftest-coverage
2513         add_ldflags -fprofile-arcs -ftest-coverage
2514     ;;
2515     hardened)
2516         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2517         add_ldflags -Wl,-z,relro -Wl,-z,now
2518     ;;
2519     ?*)
2520         die "Unknown toolchain $toolchain"
2521     ;;
2522 esac
2523
2524 set_default arch cc pkg_config sysinclude target_exec target_os
2525 enabled cross_compile || host_cc_default=$cc
2526 set_default host_cc
2527
2528 if ! $pkg_config --version >/dev/null 2>&1; then
2529     warn "$pkg_config not found, library detection may fail."
2530     pkg_config=false
2531 fi
2532
2533 exesuf() {
2534     case $1 in
2535         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2536     esac
2537 }
2538
2539 EXESUF=$(exesuf $target_os)
2540 HOSTEXESUF=$(exesuf $host_os)
2541
2542 # set temporary file name
2543 : ${TMPDIR:=$TEMPDIR}
2544 : ${TMPDIR:=$TMP}
2545 : ${TMPDIR:=/tmp}
2546
2547 if ! check_cmd mktemp -u XXXXXX; then
2548     # simple replacement for missing mktemp
2549     # NOT SAFE FOR GENERAL USE
2550     mktemp(){
2551         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2552     }
2553 fi
2554
2555 tmpfile(){
2556     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2557         (set -C; exec > $tmp) 2>/dev/null ||
2558         die "Unable to create temporary file in $TMPDIR."
2559     append TMPFILES $tmp
2560     eval $1=$tmp
2561 }
2562
2563 trap 'rm -f -- $TMPFILES' EXIT
2564
2565 tmpfile TMPASM .asm
2566 tmpfile TMPC   .c
2567 tmpfile TMPE   $EXESUF
2568 tmpfile TMPH   .h
2569 tmpfile TMPO   .o
2570 tmpfile TMPS   .S
2571 tmpfile TMPSH  .sh
2572 tmpfile TMPV   .ver
2573
2574 unset -f mktemp
2575
2576 chmod +x $TMPE
2577
2578 # make sure we can execute files in $TMPDIR
2579 cat > $TMPSH 2>> $logfile <<EOF
2580 #! /bin/sh
2581 EOF
2582 chmod +x $TMPSH >> $logfile 2>&1
2583 if ! $TMPSH >> $logfile 2>&1; then
2584     cat <<EOF
2585 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2586 variable to another directory and make sure that it is not mounted noexec.
2587 EOF
2588     die "Sanity test failed."
2589 fi
2590
2591 ccc_flags(){
2592     for flag; do
2593         case $flag in
2594             -std=c99)           echo -c99                       ;;
2595             -mcpu=*)            echo -arch ${flag#*=}           ;;
2596             -mieee)             echo -ieee                      ;;
2597             -O*|-fast)          echo $flag                      ;;
2598             -fno-math-errno)    echo -assume nomath_errno       ;;
2599             -g)                 echo -g3                        ;;
2600             -Wall)              echo -msg_enable level2         ;;
2601             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2602             -Wl,*)              echo $flag                      ;;
2603             -f*|-W*)                                            ;;
2604             *)                  echo $flag                      ;;
2605         esac
2606    done
2607 }
2608
2609 cparser_flags(){
2610     for flag; do
2611         case $flag in
2612             -Wno-switch)             echo -Wno-switch-enum ;;
2613             -Wno-format-zero-length) ;;
2614             -Wdisabled-optimization) ;;
2615             -Wno-pointer-sign)       echo -Wno-other ;;
2616             *)                       echo $flag ;;
2617         esac
2618     done
2619 }
2620
2621 msvc_common_flags(){
2622     for flag; do
2623         case $flag in
2624             # In addition to specifying certain flags under the compiler
2625             # specific filters, they must be specified here as well or else the
2626             # generic catch all at the bottom will print the original flag.
2627             -Wall)                ;;
2628             -std=c99)             ;;
2629             # Common flags
2630             -fomit-frame-pointer) ;;
2631             -g)                   echo -Z7 ;;
2632             -fno-math-errno)      ;;
2633             -fno-common)          ;;
2634             -fno-signed-zeros)    ;;
2635             -fPIC)                ;;
2636             -mthumb)              ;;
2637             -march=*)             ;;
2638             -lz)                  echo zlib.lib ;;
2639             -lavifil32)           echo vfw32.lib ;;
2640             -lavicap32)           echo vfw32.lib user32.lib ;;
2641             -l*)                  echo ${flag#-l}.lib ;;
2642             *)                    echo $flag ;;
2643         esac
2644     done
2645 }
2646
2647 msvc_flags(){
2648     msvc_common_flags "$@"
2649     for flag; do
2650         case $flag in
2651             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2652                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2653                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2654                                        -wd4273 ;;
2655         esac
2656     done
2657 }
2658
2659 icl_flags(){
2660     msvc_common_flags "$@"
2661     for flag; do
2662         case $flag in
2663             # Despite what Intel's documentation says -Wall, which is supported
2664             # on Windows, does enable remarks so disable them here.
2665             -Wall)                echo $flag -Qdiag-disable:remark ;;
2666             -std=c99)             echo -Qstd=c99 ;;
2667         esac
2668     done
2669 }
2670
2671 pgi_flags(){
2672     for flag; do
2673         case $flag in
2674             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2675             -fomit-frame-pointer) echo -Mnoframe ;;
2676             -g)                   echo -gopt ;;
2677             *)                    echo $flag ;;
2678         esac
2679     done
2680 }
2681
2682 suncc_flags(){
2683     for flag; do
2684         case $flag in
2685             -march=*|-mcpu=*)
2686                 case "${flag#*=}" in
2687                     native)                   echo -xtarget=native       ;;
2688                     v9|niagara)               echo -xarch=sparc          ;;
2689                     ultrasparc)               echo -xarch=sparcvis       ;;
2690                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2691                     i586|pentium)             echo -xchip=pentium        ;;
2692                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2693                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2694                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2695                     pentium4*)          echo -xtarget=pentium4           ;;
2696                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2697                     *-sse3)             echo -xarch=sse3                 ;;
2698                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2699                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2700                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2701                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2702                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2703                     k8|opteron|athlon64|athlon-fx)
2704                                                echo -xarch=sse2a         ;;
2705                     athlon*)                   echo -xarch=pentium_proa  ;;
2706                 esac
2707                 ;;
2708             -std=c99)             echo -xc99              ;;
2709             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2710             -fPIC)                echo -KPIC -xcode=pic32 ;;
2711             -W*,*)                echo $flag              ;;
2712             -f*-*|-W*|-mimpure-text)                      ;;
2713             -shared)              echo -G                 ;;
2714             *)                    echo $flag              ;;
2715         esac
2716     done
2717 }
2718
2719 tms470_flags(){
2720     for flag; do
2721         case $flag in
2722             -march=*|-mcpu=*)
2723                 case "${flag#*=}" in
2724                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2725                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2726                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2727                     armv6*|arm11*)          echo -mv=6   ;;
2728                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2729                                             echo -mv=5e  ;;
2730                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2731                 esac
2732                 ;;
2733             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2734             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2735             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2736             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2737             -msoft-float)   echo --float_support=vfplib       ;;
2738             -O[0-3]|-mf=*)  echo $flag                        ;;
2739             -g)             echo -g -mn                       ;;
2740             -pds=*)         echo $flag                        ;;
2741             -D*|-I*)        echo $flag                        ;;
2742             --gcc|--abi=*)  echo $flag                        ;;
2743             -me)            echo $flag                        ;;
2744         esac
2745     done
2746 }
2747
2748 probe_cc(){
2749     pfx=$1
2750     _cc=$2
2751
2752     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2753     unset _ld_o _ldflags _ld_lib _ld_path
2754     unset _depflags _DEPCMD _DEPFLAGS
2755     _flags_filter=echo
2756
2757     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2758         _type=llvm_gcc
2759         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2760         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2761         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2762         _cflags_speed='-O3'
2763         _cflags_size='-Os'
2764     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2765         _type=gcc
2766         gcc_version=$($_cc --version | head -n1)
2767         gcc_basever=$($_cc -dumpversion)
2768         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2769         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2770         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2771         if ! $_cc -dumpversion | grep -q '^2\.'; then
2772             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2773         fi
2774         _cflags_speed='-O3'
2775         _cflags_size='-Os'
2776     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2777         _type=icc
2778         _ident=$($_cc --version | head -n1)
2779         _depflags='-MMD'
2780         _cflags_speed='-O3'
2781         _cflags_size='-Os'
2782         _cflags_noopt='-O1'
2783     elif $_cc -v 2>&1 | grep -q xlc; then
2784         _type=xlc
2785         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2786         _cflags_speed='-O5'
2787         _cflags_size='-O5 -qcompact'
2788     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2789         _type=ccc
2790         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2791         _DEPFLAGS='-M'
2792         _cflags_speed='-fast'
2793         _cflags_size='-O1'
2794         _flags_filter=ccc_flags
2795     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2796         test -d "$sysroot" || die "No valid sysroot specified."
2797         _type=armcc
2798         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
2799         armcc_conf="$PWD/armcc.conf"
2800         $_cc --arm_linux_configure                 \
2801              --arm_linux_config_file="$armcc_conf" \
2802              --configure_sysroot="$sysroot"        \
2803              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2804              die "Error creating armcc configuration file."
2805         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2806         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2807         as_default="${cross_prefix}gcc"
2808         _depflags='-MMD'
2809         _cflags_speed='-O3'
2810         _cflags_size='-Os'
2811     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2812         _type=tms470
2813         _ident=$($_cc -version | head -n1 | tr -s ' ')
2814         _flags='--gcc --abi=eabi -me'
2815         _cc_e='-ppl -fe=$@'
2816         _cc_o='-fe=$@'
2817         _depflags='-ppa -ppd=$(@:.o=.d)'
2818         _cflags_speed='-O3 -mf=5'
2819         _cflags_size='-O3 -mf=2'
2820         _flags_filter=tms470_flags
2821     elif $_cc -v 2>&1 | grep -q clang; then
2822         _type=clang
2823         _ident=$($_cc --version | head -n1)
2824         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2825         _cflags_speed='-O3'
2826         _cflags_size='-Os'
2827     elif $_cc -V 2>&1 | grep -q Sun; then
2828         _type=suncc
2829         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2830         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2831         _DEPFLAGS='-xM1 -xc99'
2832         _ldflags='-std=c99'
2833         _cflags_speed='-O5'
2834         _cflags_size='-O5 -xspace'
2835         _flags_filter=suncc_flags
2836     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2837         _type=pathscale
2838         _ident=$($_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'
2843     elif $_cc -v 2>&1 | grep -q Open64; then
2844         _type=open64
2845         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2846         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2847         _cflags_speed='-O2'
2848         _cflags_size='-Os'
2849         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2850     elif $_cc -V 2>&1 | grep -q Portland; then
2851         _type=pgi
2852         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2853         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2854         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2855         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2856         _cflags_noopt="-O1"
2857         _flags_filter=pgi_flags
2858     elif $_cc 2>&1 | grep -q Microsoft; then
2859         _type=msvc
2860         _ident=$($cc 2>&1 | head -n1)
2861         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2862         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2863         _cflags_speed="-O2"
2864         _cflags_size="-O1"
2865         if $_cc 2>&1 | grep -q Linker; then
2866             _ld_o='-out:$@'
2867         else
2868             _ld_o='-Fe$@'
2869         fi
2870         _cc_o='-Fo$@'
2871         _cc_e='-P -Fi$@'
2872         _flags_filter=msvc_flags
2873         _ld_lib='lib%.a'
2874         _ld_path='-libpath:'
2875         _flags='-nologo'
2876         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2877         if [ $pfx = hostcc ]; then
2878             append _cflags -Dsnprintf=_snprintf
2879         fi
2880     elif $_cc 2>&1 | grep -q Intel; then
2881         _type=icl
2882         _ident=$($cc 2>&1 | head -n1)
2883         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2884         # Not only is O3 broken on 13.x+ but it is slower on all previous
2885         # versions (tested) as well.
2886         _cflags_speed="-O2"
2887         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2888         if $_cc 2>&1 | grep -q Linker; then
2889             _ld_o='-out:$@'
2890         else
2891             _ld_o='-Fe$@'
2892         fi
2893         _cc_o='-Fo$@'
2894         _cc_e='-P'
2895         _flags_filter=icl_flags
2896         _ld_lib='lib%.a'
2897         _ld_path='-libpath:'
2898         # -Qdiag-error to make icl error when seeing certain unknown arguments
2899         _flags='-nologo -Qdiag-error:4044,10157'
2900         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2901         # with MSVC which enables it by default.
2902         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2903         if [ $pfx = hostcc ]; then
2904             append _cflags -Dsnprintf=_snprintf
2905         fi
2906     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2907         _type=cparser
2908         _ident=$($_cc --version | head -n1)
2909         _depflags='-MMD'
2910         _cflags_speed='-O4'
2911         _cflags_size='-O2'
2912         _flags_filter=cparser_flags
2913     fi
2914
2915     eval ${pfx}_type=\$_type
2916     eval ${pfx}_ident=\$_ident
2917 }
2918
2919 set_ccvars(){
2920     eval ${1}_C=\${_cc_c-\${${1}_C}}
2921     eval ${1}_E=\${_cc_e-\${${1}_E}}
2922     eval ${1}_O=\${_cc_o-\${${1}_O}}
2923
2924     if [ -n "$_depflags" ]; then
2925         eval ${1}_DEPFLAGS=\$_depflags
2926     else
2927         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2928         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2929         eval DEP${1}FLAGS=\$_flags
2930     fi
2931 }
2932
2933 probe_cc cc "$cc"
2934 cflags_filter=$_flags_filter
2935 cflags_speed=$_cflags_speed
2936 cflags_size=$_cflags_size
2937 cflags_noopt=$_cflags_noopt
2938 add_cflags $_flags $_cflags
2939 cc_ldflags=$_ldflags
2940 set_ccvars CC
2941
2942 probe_cc hostcc "$host_cc"
2943 host_cflags_filter=$_flags_filter
2944 add_host_cflags  $_flags $_cflags
2945 set_ccvars HOSTCC
2946
2947 test -n "$cc_type" && enable $cc_type ||
2948     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2949
2950 : ${as_default:=$cc}
2951 : ${dep_cc_default:=$cc}
2952 : ${ld_default:=$cc}
2953 : ${host_ld_default:=$host_cc}
2954 set_default ar as dep_cc ld host_ld
2955
2956 probe_cc as "$as"
2957 asflags_filter=$_flags_filter
2958 add_asflags $_flags $_cflags
2959 set_ccvars AS
2960
2961 probe_cc ld "$ld"
2962 ldflags_filter=$_flags_filter
2963 add_ldflags $_flags $_ldflags
2964 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2965 LD_O=${_ld_o-$LD_O}
2966 LD_LIB=${_ld_lib-$LD_LIB}
2967 LD_PATH=${_ld_path-$LD_PATH}
2968
2969 probe_cc hostld "$host_ld"
2970 host_ldflags_filter=$_flags_filter
2971 add_host_ldflags $_flags $_ldflags
2972 HOSTLD_O=${_ld_o-$HOSTLD_O}
2973
2974 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2975     probe_cc depcc "$dep_cc"
2976     CCDEP=${_DEPCMD:-$DEPCMD}
2977     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2978     DEPCCFLAGS=$_flags
2979 fi
2980
2981 if $ar 2>&1 | grep -q Microsoft; then
2982     arflags="-nologo"
2983     ar_o='-out:$@'
2984 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2985     arflags="rq"
2986     ar_o='$@'
2987 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2988     arflags='-Xany -r -c'
2989     ar_o='$@'
2990 else
2991     arflags="rc"
2992     ar_o='$@'
2993 fi
2994
2995 add_cflags $extra_cflags
2996 add_asflags $extra_cflags
2997
2998 if test -n "$sysroot"; then
2999     case "$cc_type" in
3000         gcc|llvm_gcc|clang)
3001             add_cppflags --sysroot="$sysroot"
3002             add_ldflags --sysroot="$sysroot"
3003         ;;
3004         tms470)
3005             add_cppflags -I"$sysinclude"
3006             add_ldflags  --sysroot="$sysroot"
3007         ;;
3008     esac
3009 fi
3010
3011 if test "$cpu" = host; then
3012     enabled cross_compile &&
3013         die "--cpu=host makes no sense when cross-compiling."
3014
3015     case "$cc_type" in
3016         gcc|llvm_gcc)
3017             check_native(){
3018                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3019                 sed -n "/cc1.*$1=/{
3020                             s/.*$1=\\([^ ]*\\).*/\\1/
3021                             p
3022                             q
3023                         }" $TMPE
3024             }
3025             cpu=$(check_native -march || check_native -mcpu)
3026         ;;
3027     esac
3028
3029     test "${cpu:-host}" = host &&
3030         die "--cpu=host not supported with compiler $cc"
3031 fi
3032
3033 # Deal with common $arch aliases
3034 case "$arch" in
3035     aarch64|arm64)
3036         arch="aarch64"
3037     ;;
3038     arm*)
3039         arch="arm"
3040     ;;
3041     mips*|IP*)
3042         arch="mips"
3043     ;;
3044     parisc*|hppa*)
3045         arch="parisc"
3046     ;;
3047     "Power Macintosh"|ppc*|powerpc*)
3048         arch="ppc"
3049     ;;
3050     s390|s390x)
3051         arch="s390"
3052     ;;
3053     sh4|sh)
3054         arch="sh4"
3055     ;;
3056     sun4u|sparc*)
3057         arch="sparc"
3058     ;;
3059     tilegx|tile-gx)
3060         arch="tilegx"
3061     ;;
3062     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3063         arch="x86"
3064     ;;
3065 esac
3066
3067 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3068 enable $arch
3069
3070 # Add processor-specific flags
3071 if enabled aarch64; then
3072
3073     case $cpu in
3074         armv*)
3075             cpuflags="-march=$cpu"
3076         ;;
3077         *)
3078             cpuflags="-mcpu=$cpu"
3079         ;;
3080     esac
3081
3082 elif enabled alpha; then
3083
3084     cpuflags="-mcpu=$cpu"
3085
3086 elif enabled arm; then
3087
3088     check_arm_arch() {
3089         check_cpp_condition stddef.h \
3090             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3091             $cpuflags
3092     }
3093
3094     probe_arm_arch() {
3095         if   check_arm_arch 4;        then echo armv4;
3096         elif check_arm_arch 4T;       then echo armv4t;
3097         elif check_arm_arch 5;        then echo armv5;
3098         elif check_arm_arch 5E;       then echo armv5e;
3099         elif check_arm_arch 5T;       then echo armv5t;
3100         elif check_arm_arch 5TE;      then echo armv5te;
3101         elif check_arm_arch 5TEJ;     then echo armv5te;
3102         elif check_arm_arch 6;        then echo armv6;
3103         elif check_arm_arch 6J;       then echo armv6j;
3104         elif check_arm_arch 6K;       then echo armv6k;
3105         elif check_arm_arch 6Z;       then echo armv6z;
3106         elif check_arm_arch 6ZK;      then echo armv6zk;
3107         elif check_arm_arch 6T2;      then echo armv6t2;
3108         elif check_arm_arch 7;        then echo armv7;
3109         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3110         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3111         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3112         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3113         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3114         fi
3115     }
3116
3117     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3118
3119     case $cpu in
3120         armv*)
3121             cpuflags="-march=$cpu"
3122             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3123         ;;
3124         *)
3125             cpuflags="-mcpu=$cpu"
3126             case $cpu in
3127                 cortex-a*)                               subarch=armv7a  ;;
3128                 cortex-r*)                               subarch=armv7r  ;;
3129                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3130                 arm11*)                                  subarch=armv6   ;;
3131                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3132                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3133                 *)                             subarch=$(probe_arm_arch) ;;
3134             esac
3135         ;;
3136     esac
3137
3138     case "$subarch" in
3139         armv5t*)    enable fast_clz                ;;
3140         armv[6-8]*) enable fast_clz fast_unaligned ;;
3141     esac
3142
3143 elif enabled avr32; then
3144
3145     case $cpu in
3146         ap7[02]0[0-2])
3147             subarch="avr32_ap"
3148             cpuflags="-mpart=$cpu"
3149         ;;
3150         ap)
3151             subarch="avr32_ap"
3152             cpuflags="-march=$cpu"
3153         ;;
3154         uc3[ab]*)
3155             subarch="avr32_uc"
3156             cpuflags="-mcpu=$cpu"
3157         ;;
3158         uc)
3159             subarch="avr32_uc"
3160             cpuflags="-march=$cpu"
3161         ;;
3162     esac
3163
3164 elif enabled bfin; then
3165
3166     cpuflags="-mcpu=$cpu"
3167
3168 elif enabled mips; then
3169
3170     cpuflags="-march=$cpu"
3171
3172 elif enabled ppc; then
3173
3174     disable ldbrx
3175
3176     case $(tolower $cpu) in
3177         601|ppc601|powerpc601)
3178             cpuflags="-mcpu=601"
3179             disable altivec
3180         ;;
3181         603*|ppc603*|powerpc603*)
3182             cpuflags="-mcpu=603"
3183             disable altivec
3184         ;;
3185         604*|ppc604*|powerpc604*)
3186             cpuflags="-mcpu=604"
3187             disable altivec
3188         ;;
3189         g3|75*|ppc75*|powerpc75*)
3190             cpuflags="-mcpu=750"
3191             disable altivec
3192         ;;
3193         g4|745*|ppc745*|powerpc745*)
3194             cpuflags="-mcpu=7450"
3195         ;;
3196         74*|ppc74*|powerpc74*)
3197             cpuflags="-mcpu=7400"
3198         ;;
3199         g5|970|ppc970|powerpc970)
3200             cpuflags="-mcpu=970"
3201         ;;
3202         power[3-7]*)
3203             cpuflags="-mcpu=$cpu"
3204         ;;
3205         cell)
3206             cpuflags="-mcpu=cell"
3207             enable ldbrx
3208         ;;
3209         e500mc)
3210             cpuflags="-mcpu=e500mc"
3211             disable altivec
3212         ;;
3213         e500v2)
3214             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3215             disable altivec
3216             disable dcbzl
3217         ;;
3218         e500)
3219             cpuflags="-mcpu=8540 -mhard-float"
3220             disable altivec
3221             disable dcbzl
3222         ;;
3223     esac
3224
3225 elif enabled sparc; then
3226
3227     case $cpu in
3228         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3229             cpuflags="-mcpu=$cpu"
3230         ;;
3231         ultrasparc*|niagara[234])
3232             cpuflags="-mcpu=$cpu"
3233         ;;
3234     esac
3235
3236 elif enabled x86; then
3237
3238     case $cpu in
3239         i[345]86|pentium)
3240             cpuflags="-march=$cpu"
3241             disable mmx
3242         ;;
3243         # targets that do NOT support nopl and conditional mov (cmov)
3244         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3245             cpuflags="-march=$cpu"
3246             disable i686
3247         ;;
3248         # targets that do support nopl and conditional mov (cmov)
3249         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3250             cpuflags="-march=$cpu"
3251             enable i686
3252             enable fast_cmov
3253         ;;
3254         # targets that do support conditional mov but on which it's slow
3255         pentium4|pentium4m|prescott|nocona)
3256             cpuflags="-march=$cpu"
3257             enable i686
3258             disable fast_cmov
3259         ;;
3260     esac
3261
3262 fi
3263
3264 if [ "$cpu" != generic ]; then
3265     add_cflags  $cpuflags
3266     add_asflags $cpuflags
3267 fi
3268
3269 # compiler sanity check
3270 check_exec <<EOF
3271 int main(void){ return 0; }
3272 EOF
3273 if test "$?" != 0; then
3274     echo "$cc is unable to create an executable file."
3275     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3276         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3277         echo "Only do this if you know what cross compiling means."
3278     fi
3279     die "C compiler test failed."
3280 fi
3281
3282 add_cppflags -D_ISOC99_SOURCE
3283 check_cflags -std=c99
3284 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3285 #include <stdlib.h>
3286 EOF
3287 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3288 #include <stdlib.h>
3289 EOF
3290
3291 add_host_cppflags -D_ISOC99_SOURCE
3292 check_host_cflags -std=c99
3293 check_host_cflags -Wall
3294 check_host_cflags -O3
3295
3296 check_64bit(){
3297     arch32=$1
3298     arch64=$2
3299     expr=$3
3300     check_code cc "" "int test[2*($expr) - 1]" &&
3301         subarch=$arch64 || subarch=$arch32
3302 }
3303
3304 case "$arch" in
3305     aarch64|alpha|ia64)
3306         spic=$shared
3307     ;;
3308     mips)
3309         check_64bit mips mips64 '_MIPS_SIM > 1'
3310         spic=$shared
3311     ;;
3312     parisc)
3313         check_64bit parisc parisc64 'sizeof(void *) > 4'
3314         spic=$shared
3315     ;;
3316     ppc)
3317         check_64bit ppc ppc64 'sizeof(void *) > 4'
3318         spic=$shared
3319     ;;
3320     s390)
3321         check_64bit s390 s390x 'sizeof(void *) > 4'
3322         spic=$shared
3323     ;;
3324     sparc)
3325         check_64bit sparc sparc64 'sizeof(void *) > 4'
3326         spic=$shared
3327     ;;
3328     x86)
3329         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3330         if test "$subarch" = "x86_64"; then
3331             spic=$shared
3332         fi
3333     ;;
3334 esac
3335
3336 enable $subarch
3337 enabled spic && enable_weak pic
3338
3339 # OS specific
3340 case $target_os in
3341     aix)
3342         SHFLAGS=-shared
3343         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3344         enabled shared && add_ldflags -Wl,-brtl
3345         ;;
3346     android)
3347         disable symver
3348         SLIB_INSTALL_NAME='$(SLIBNAME)'
3349         SLIB_INSTALL_LINKS=
3350         # soname not set on purpose
3351         SHFLAGS=-shared
3352         ;;
3353     haiku)
3354         prefix_default="/boot/common"
3355         network_extralibs="-lnetwork"
3356         host_libs=
3357         ;;
3358     sunos)
3359         SHFLAGS='-shared -Wl,-h,$$(@F)'
3360         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3361         network_extralibs="-lsocket -lnsl"
3362         # When using suncc to build, the Solaris linker will mark
3363         # an executable with each instruction set encountered by
3364         # the Solaris assembler.  As our libraries contain their own
3365         # guards for processor-specific code, instead suppress
3366         # generation of the HWCAPS ELF section on Solaris x86 only.
3367         enabled_all suncc x86 &&
3368             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3369             add_ldflags -Wl,-M,mapfile
3370         nm_default='nm -P -g'
3371         ;;
3372     netbsd)
3373         disable symver
3374         oss_indev_extralibs="-lossaudio"
3375         oss_outdev_extralibs="-lossaudio"
3376         ;;
3377     openbsd|bitrig)
3378         disable symver
3379         SHFLAGS='-shared'
3380         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3381         SLIB_INSTALL_LINKS=
3382         oss_indev_extralibs="-lossaudio"
3383         oss_outdev_extralibs="-lossaudio"
3384         ;;
3385     dragonfly)
3386         disable symver
3387         ;;
3388     freebsd)
3389         ;;
3390     bsd/os)
3391         add_extralibs -lpoll -lgnugetopt
3392         ;;
3393     darwin)
3394         gas="gas-preprocessor.pl $cc"
3395         enabled ppc && add_asflags -force_cpusubtype_ALL
3396         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3397         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3398         add_ldflags -Wl,-dynamic,-search_paths_first
3399         SLIBSUF=".dylib"
3400         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3401         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3402         objformat="macho"
3403         enabled x86_64 && objformat="macho64"
3404         enabled_any pic shared ||
3405             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3406         ;;
3407     mingw32*)
3408         if test $target_os = "mingw32ce"; then
3409             disable network
3410         else
3411             target_os=mingw32
3412         fi
3413         LIBTARGET=i386
3414         if enabled x86_64; then
3415             LIBTARGET="i386:x86-64"
3416         elif enabled arm; then
3417             LIBTARGET=arm-wince
3418         fi
3419         check_ldflags -Wl,--nxcompat
3420         check_ldflags -Wl,--dynamicbase
3421         shlibdir_default="$bindir_default"
3422         SLIBPREF=""
3423         SLIBSUF=".dll"
3424         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3425         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3426         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3427         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3428         SLIB_INSTALL_LINKS=
3429         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3430         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3431         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3432         objformat="win32"
3433         dlltool="${cross_prefix}dlltool"
3434         ranlib=:
3435         enable dos_paths
3436         ;;
3437     win32|win64)
3438         disable symver
3439         if enabled shared; then
3440             # Link to the import library instead of the normal static library
3441             # for shared libs.
3442             LD_LIB='%.lib'
3443             # Cannot build both shared and static libs with MSVC or icl.
3444             disable static
3445         fi
3446         shlibdir_default="$bindir_default"
3447         SLIBPREF=""
3448         SLIBSUF=".dll"
3449         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3450         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3451         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3452         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3453         SLIB_INSTALL_LINKS=
3454         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3455         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3456         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3457         objformat="win32"
3458         ranlib=:
3459         enable dos_paths
3460         ;;
3461     cygwin*)
3462         target_os=cygwin
3463         shlibdir_default="$bindir_default"
3464         SLIBPREF="cyg"
3465         SLIBSUF=".dll"
3466         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3467         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3468         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3469         SLIB_INSTALL_LINKS=
3470         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3471         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3472         objformat="win32"
3473         enable dos_paths
3474         ;;
3475     *-dos|freedos|opendos)
3476         network_extralibs="-lsocket"
3477         objformat="coff"
3478         enable dos_paths
3479         add_cppflags -U__STRICT_ANSI__
3480         ;;
3481     linux)
3482         enable dv1394
3483         ;;
3484     irix*)
3485         target_os=irix
3486         ranlib="echo ignoring ranlib"
3487         ;;
3488     os/2*)
3489         ln_s="cp -f"
3490         objformat="aout"
3491         add_cppflags -D_GNU_SOURCE
3492         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3493         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3494         LIBSUF="_s.a"
3495         SLIBPREF=""
3496         SLIBSUF=".dll"
3497         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3498         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3499         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3500             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3501             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3502             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3503             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3504             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3505         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3506             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3507         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3508         enable dos_paths
3509         ;;
3510     gnu/kfreebsd)
3511         add_cppflags -D_BSD_SOURCE
3512         ;;
3513     gnu)
3514         ;;
3515     qnx)
3516         add_cppflags -D_QNX_SOURCE
3517         network_extralibs="-lsocket"
3518         ;;
3519     symbian)
3520         SLIBSUF=".dll"
3521         enable dos_paths
3522         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3523         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3524         add_ldflags -Wl,--target1-abs,--no-undefined \
3525                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3526                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3527         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3528                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3529                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3530         ;;
3531     osf1)
3532         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3533         ;;
3534     minix)
3535         ;;
3536     plan9)
3537         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3538                      -D_REENTRANT_SOURCE        \
3539                      -D_RESEARCH_SOURCE         \
3540                      -DFD_SETSIZE=96            \
3541                      -DHAVE_SOCK_OPTS
3542         add_compat strtod.o strtod=avpriv_strtod
3543         network_extralibs='-lbsd'
3544         exeobjs=compat/plan9/main.o
3545         cp_f='cp'
3546         ;;
3547     none)
3548         ;;
3549     *)
3550         die "Unknown OS '$target_os'."
3551         ;;
3552 esac
3553
3554 # determine libc flavour
3555
3556 probe_libc(){
3557     pfx=$1
3558     pfx_no_=${pfx%_}
3559     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3560     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3561         eval ${pfx}libc_type=uclibc
3562         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3563     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3564         eval ${pfx}libc_type=glibc
3565         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3566     # MinGW headers can be installed on Cygwin, so check for newlib first.
3567     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3568         eval ${pfx}libc_type=newlib
3569         add_${pfx}cppflags -U__STRICT_ANSI__
3570     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3571     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3572         eval ${pfx}libc_type=mingw64
3573         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3574         eval test \$${pfx_no_}cc_type = "gcc" &&
3575             add_${pfx}cppflags -D__printf__=__gnu_printf__
3576     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3577          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3578         eval ${pfx}libc_type=mingw32
3579         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3580             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3581             die "ERROR: MinGW32 runtime version must be >= 3.15."
3582         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3583         eval test \$${pfx_no_}cc_type = "gcc" &&
3584             add_${pfx}cppflags -D__printf__=__gnu_printf__
3585     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3586         eval ${pfx}libc_type=msvcrt
3587         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3588         # 0x601 by default unless something else is set by the user.
3589         # This can easily lead to us detecting functions only present
3590         # in such new versions and producing binaries requiring windows 7.0.
3591         # Therefore explicitly set the default to XP unless the user has
3592         # set something else on the command line.
3593         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3594             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3595     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3596         eval ${pfx}libc_type=klibc
3597     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3598         eval ${pfx}libc_type=bionic
3599     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3600         eval ${pfx}libc_type=solaris
3601         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3602     fi
3603 }
3604
3605 probe_libc
3606 test -n "$libc_type" && enable libc_$libc_type
3607 probe_libc host_
3608 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3609
3610 case $libc_type in
3611     bionic)
3612         add_compat strtod.o strtod=avpriv_strtod
3613         ;;
3614     msvcrt)
3615         add_compat strtod.o strtod=avpriv_strtod
3616         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3617                                      _snprintf=avpriv_snprintf  \
3618                                      vsnprintf=avpriv_vsnprintf
3619         ;;
3620 esac
3621
3622 # hacks for compiler/libc/os combinations
3623
3624 if enabled_all tms470 libc_glibc; then
3625     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3626     add_cppflags -D__USER_LABEL_PREFIX__=
3627     add_cppflags -D__builtin_memset=memset
3628     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3629     add_cflags   -pds=48    # incompatible redefinition of macro
3630 fi
3631
3632 if enabled_all ccc libc_glibc; then
3633     add_ldflags -Wl,-z,now  # calls to libots crash without this
3634 fi
3635
3636 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3637     add_cppflags '-I\$(SRC_PATH)/compat/float'
3638
3639 esc(){
3640     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3641 }
3642
3643 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3644
3645 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3646
3647 set_default $PATHS_LIST
3648 set_default nm
3649
3650 # we need to build at least one lib type
3651 if ! enabled_any static shared; then
3652     cat <<EOF
3653 At least one library type must be built.
3654 Specify --enable-static to build the static libraries or --enable-shared to
3655 build the shared libraries as well. To only build the shared libraries specify
3656 --disable-static in addition to --enable-shared.
3657 EOF
3658     exit 1;
3659 fi
3660
3661 die_license_disabled() {
3662     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3663 }
3664
3665 die_license_disabled gpl libcdio
3666 die_license_disabled gpl libx264
3667 die_license_disabled gpl libx265
3668 die_license_disabled gpl libxavs
3669 die_license_disabled gpl libxvid
3670 die_license_disabled gpl x11grab
3671
3672 die_license_disabled nonfree libfaac
3673 die_license_disabled nonfree libfdk_aac
3674 die_license_disabled nonfree openssl
3675
3676 die_license_disabled version3 libopencore_amrnb
3677 die_license_disabled version3 libopencore_amrwb
3678 die_license_disabled version3 libvo_aacenc
3679 die_license_disabled version3 libvo_amrwbenc
3680
3681 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3682
3683 disabled optimizations || check_cflags -fomit-frame-pointer
3684
3685 enable_weak_pic() {
3686     disabled pic && return
3687     enable pic
3688     add_cppflags -DPIC
3689     case "$target_os" in
3690     mingw*|cygwin*)
3691         ;;
3692     *)
3693         add_cflags -fPIC
3694         ;;
3695     esac
3696     add_asflags  -fPIC
3697 }
3698
3699 enabled pic && enable_weak_pic
3700
3701 check_cc <<EOF || die "Symbol mangling check failed."
3702 int ff_extern;
3703 EOF
3704 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3705 extern_prefix=${sym%%ff_extern*}
3706
3707 check_cc <<EOF && enable_weak inline_asm
3708 void foo(void) { __asm__ volatile ("" ::); }
3709 EOF
3710
3711 _restrict=
3712 for restrict_keyword in restrict __restrict__ __restrict; do
3713     check_cc <<EOF && _restrict=$restrict_keyword && break
3714 void foo(char * $restrict_keyword p);
3715 EOF
3716 done
3717
3718 check_cc <<EOF && enable pragma_deprecated
3719 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3720 EOF
3721
3722 check_cc <<EOF && enable attribute_packed
3723 struct { int x; } __attribute__((packed)) x;
3724 EOF
3725
3726 check_cc <<EOF && enable attribute_may_alias
3727 union { int x; } __attribute__((may_alias)) x;
3728 EOF
3729
3730 check_cc <<EOF || die "endian test failed"
3731 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3732 EOF
3733 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3734
3735
3736 if enabled asm; then
3737     enabled     arm         && nogas=die
3738     enabled_all ppc altivec && nogas=warn
3739     as=${gas:=$as}
3740     check_as <<EOF && enable gnu_as || \
3741         $nogas "GNU assembler not found, install gas-preprocessor"
3742 .macro m n
3743 \n: .int 0
3744 .endm
3745 m x
3746 EOF
3747
3748     check_as <<EOF || $nogas "GNU assembler not found, install gas-preprocessor"
3749 .altmacro
3750 EOF
3751
3752     check_as <<EOF && enable as_func
3753 .func test
3754 .endfunc
3755 EOF
3756 fi
3757
3758 check_inline_asm inline_asm_labels '"1:\n"'
3759
3760 if enabled aarch64; then
3761     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3762     # internal assembler in clang 3.3 does not support this instruction
3763     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3764     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3765
3766     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3767
3768 elif enabled alpha; then
3769
3770     check_cflags -mieee
3771
3772 elif enabled arm; then
3773
3774     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3775     enabled thumb && check_cflags -mthumb || check_cflags -marm
3776
3777     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3778         enable vfp_args
3779     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3780         case "${cross_prefix:-$cc}" in
3781             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3782             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3783 __asm__ (".eabi_attribute 28, 1");
3784 int main(void) { return 0; }
3785 EOF
3786         esac
3787         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3788     fi
3789
3790     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3791     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3792     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3793     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3794     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3795     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3796
3797     [ $target_os = linux ] ||
3798         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3799             $ARCH_EXT_LIST_ARM
3800
3801     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3802
3803     check_as <<EOF && enable as_dn_directive
3804 ra .dn d0.i16
3805 .unreq ra
3806 EOF
3807
3808     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3809
3810 elif enabled mips; then
3811
3812     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3813
3814 elif enabled parisc; then
3815
3816     if enabled gcc; then
3817         case $($cc -dumpversion) in
3818             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3819         esac
3820     fi
3821
3822 elif enabled ppc; then
3823
3824     enable local_aligned_8 local_aligned_16
3825
3826     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3827     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3828     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3829     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3830
3831     # AltiVec flags: The FSF version of GCC differs from the Apple version
3832     if enabled altivec; then
3833         check_cflags -maltivec -mabi=altivec &&
3834         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3835         check_cflags -faltivec
3836
3837         # check if our compiler supports Motorola AltiVec C API
3838         check_cc <<EOF || disable altivec
3839 $inc_altivec_h
3840 int main(void) {
3841     vector signed int v1 = (vector signed int) { 0 };
3842     vector signed int v2 = (vector signed int) { 1 };
3843     v1 = vec_add(v1, v2);
3844     return 0;
3845 }
3846 EOF
3847
3848         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3849     fi
3850
3851 elif enabled x86; then
3852
3853     check_builtin rdtsc    intrin.h   "__rdtsc()"
3854     check_builtin mm_empty mmintrin.h "_mm_empty()"
3855
3856     enable local_aligned_8 local_aligned_16
3857
3858     # check whether EBP is available on x86
3859     # As 'i' is stored on the stack, this program will crash
3860     # if the base pointer is used to access it because the
3861     # base pointer is cleared in the inline assembly code.
3862     check_exec_crash <<EOF && enable ebp_available
3863 volatile int i=0;
3864 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3865 return i;
3866 EOF
3867
3868     # check whether EBX is available on x86
3869     check_inline_asm ebx_available '""::"b"(0)' &&
3870         check_inline_asm ebx_available '"":::"%ebx"'
3871
3872     # check whether xmm clobbers are supported
3873     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3874
3875     # check whether binutils is new enough to compile SSSE3/MMXEXT
3876     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3877     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3878
3879     if ! disabled_any asm mmx yasm; then
3880         if check_cmd $yasmexe --version; then
3881             enabled x86_64 && yasm_extra="-m amd64"
3882             yasm_debug="-g dwarf2"
3883         elif check_cmd nasm -v; then
3884             yasmexe=nasm
3885             yasm_debug="-g -F dwarf"
3886             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3887         fi
3888
3889         YASMFLAGS="-f $objformat $yasm_extra"
3890         enabled pic               && append YASMFLAGS "-DPIC"
3891         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3892         case "$objformat" in
3893             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3894         esac
3895
3896         check_yasm "movbe ecx, [5]" && enable yasm ||
3897             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3898         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
3899         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
3900         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3901         check_yasm "CPU amdnop" || disable cpunop
3902     fi
3903
3904     case "$cpu" in
3905         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3906             disable fast_clz
3907         ;;
3908     esac
3909
3910 fi
3911
3912 check_ldflags -Wl,--as-needed
3913
3914 if check_func dlopen; then
3915     ldl=
3916 elif check_func dlopen -ldl; then
3917     ldl=-ldl
3918 fi
3919
3920 if ! disabled network; then
3921     check_func getaddrinfo $network_extralibs
3922     check_func getservbyport $network_extralibs
3923     check_func inet_aton $network_extralibs
3924
3925     check_type netdb.h "struct addrinfo"
3926     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3927     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3928     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3929     check_type poll.h "struct pollfd"
3930     check_type netinet/sctp.h "struct sctp_event_subscribe"
3931     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3932     check_type netinet/in.h "struct sockaddr_in6"
3933     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3934     check_type "sys/types.h sys/socket.h" socklen_t
3935
3936     # Prefer arpa/inet.h over winsock2
3937     if check_header arpa/inet.h ; then
3938         check_func closesocket
3939     elif check_header winsock2.h ; then
3940         check_func_headers winsock2.h closesocket -lws2 &&
3941             network_extralibs="-lws2" ||
3942         { check_func_headers winsock2.h closesocket -lws2_32 &&
3943             network_extralibs="-lws2_32"; } || disable winsock2_h network
3944         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3945
3946         check_type ws2tcpip.h socklen_t
3947         check_type ws2tcpip.h "struct addrinfo"
3948         check_type ws2tcpip.h "struct group_source_req"
3949         check_type ws2tcpip.h "struct ip_mreq_source"
3950         check_type ws2tcpip.h "struct ipv6_mreq"
3951         check_type winsock2.h "struct pollfd"
3952         check_struct winsock2.h "struct sockaddr" sa_len
3953         check_type ws2tcpip.h "struct sockaddr_in6"
3954         check_type ws2tcpip.h "struct sockaddr_storage"
3955     else
3956         disable network
3957     fi
3958 fi
3959
3960 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3961 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3962 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3963 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3964
3965 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3966 check_func  ${malloc_prefix}memalign            && enable memalign
3967 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3968
3969 check_func  fcntl
3970 check_func  fork
3971 check_func  gethrtime
3972 check_func  getopt
3973 check_func  getrusage
3974 check_func  gettimeofday
3975 check_func  isatty
3976 check_func  localtime_r
3977 check_func  mach_absolute_time
3978 check_func  mkstemp
3979 check_func  mmap
3980 check_func  mprotect
3981 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3982 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3983 check_func  sched_getaffinity
3984 check_func  setrlimit
3985 check_func  strerror_r
3986 check_func  strptime
3987 check_func  sysconf
3988 check_func  sysctl
3989 check_func  usleep
3990
3991 check_func_headers io.h setmode
3992 check_func_headers stdlib.h getenv
3993
3994 check_func_headers windows.h CoTaskMemFree -lole32
3995 check_func_headers windows.h GetProcessAffinityMask
3996 check_func_headers windows.h GetProcessTimes
3997 check_func_headers windows.h GetSystemTimeAsFileTime
3998 check_func_headers windows.h MapViewOfFile
3999 check_func_headers windows.h SetConsoleTextAttribute
4000 check_func_headers windows.h Sleep
4001 check_func_headers windows.h VirtualAlloc
4002
4003 check_header direct.h
4004 check_header dlfcn.h
4005 check_header dxva.h
4006 check_header dxva2api.h
4007 check_header io.h
4008 check_header mach/mach_time.h
4009 check_header malloc.h
4010 check_header poll.h
4011 check_header sys/mman.h
4012 check_header sys/param.h
4013 check_header sys/resource.h
4014 check_header sys/select.h
4015 check_header sys/time.h
4016 check_header sys/un.h
4017 check_header unistd.h
4018 check_header vdpau/vdpau.h
4019 check_header vdpau/vdpau_x11.h
4020 check_header VideoDecodeAcceleration/VDADecoder.h
4021 check_header windows.h
4022 check_header X11/extensions/XvMClib.h
4023
4024 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4025 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4026 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4027
4028 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4029
4030 if ! disabled w32threads && ! enabled pthreads; then
4031     check_func_headers "windows.h process.h" _beginthreadex &&
4032         enable w32threads || disable w32threads
4033 fi
4034
4035 # check for some common methods of building with pthread support
4036 # do this before the optional library checks as some of them require pthreads
4037 if ! disabled pthreads && ! enabled w32threads; then
4038     enable pthreads
4039     if check_func pthread_join -pthread; then
4040         add_cflags -pthread
4041         add_extralibs -pthread
4042     elif check_func pthread_join -pthreads; then
4043         add_cflags -pthreads
4044         add_extralibs -pthreads
4045     elif check_func pthread_join -lpthreadGC2; then
4046         add_extralibs -lpthreadGC2
4047     elif check_lib pthread.h pthread_join -lpthread; then
4048         :
4049     elif ! check_func pthread_join; then
4050         disable pthreads
4051     fi
4052 fi
4053
4054 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4055 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4056
4057 check_lib math.h sin -lm && LIBM="-lm"
4058 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4059
4060 atan2f_args=2
4061 ldexpf_args=2
4062 powf_args=2
4063
4064 for func in $MATH_FUNCS; do
4065     eval check_mathfunc $func \${${func}_args:-1}
4066 done
4067
4068 # these are off by default, so fail if requested and not available
4069 enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
4070                                { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
4071                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4072 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4073 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4074 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4075 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4076 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4077 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4078 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4079 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4080                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4081                                done || die "ERROR: libgsm not found"; }
4082 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4083 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4084 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4085 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4086 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4087 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4088                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4089 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4090 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4091 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4092 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4093 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4094 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4095 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4096 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4097 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4098 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4099 enabled libvpx            && {
4100     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4101                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4102     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
4103                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
4104     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4105     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4106 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4107 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4108 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4109                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4110                                die "ERROR: libx264 version must be >= 0.118."; }
4111 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4112                              { check_cpp_condition x265.h "X265_BUILD >= 17" ||
4113                                die "ERROR: libx265 version must be >= 17."; }
4114 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4115 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4116 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4117                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4118                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4119                                die "ERROR: openssl not found"; }
4120
4121 if enabled gnutls; then
4122     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4123     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4124 fi
4125
4126 # libdc1394 check
4127 if enabled libdc1394; then
4128     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4129         enable libdc1394_2; } ||
4130     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4131         enable libdc1394_1; } ||
4132     die "ERROR: No version of libdc1394 found "
4133 fi
4134
4135 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4136     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4137     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4138     enable sdl
4139 fi
4140
4141 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4142 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4143
4144 check_header linux/fb.h
4145 check_header linux/videodev2.h
4146 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4147
4148 check_header sys/videoio.h
4149
4150 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4151 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4152 # w32api 3.12 had it defined wrong
4153 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4154
4155 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4156 { check_header dev/bktr/ioctl_meteor.h &&
4157   check_header dev/bktr/ioctl_bt848.h; } ||
4158 { check_header machine/ioctl_meteor.h &&
4159   check_header machine/ioctl_bt848.h; } ||
4160 { check_header dev/video/meteor/ioctl_meteor.h &&
4161   check_header dev/video/bktr/ioctl_bt848.h; } ||
4162 check_header dev/ic/bt8xx.h
4163
4164 check_header sndio.h
4165 check_header sys/soundcard.h
4166 check_header soundcard.h
4167
4168 enabled_any alsa_indev alsa_outdev &&
4169     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4170
4171 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4172     check_func jack_port_get_latency_range -ljack
4173
4174 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4175
4176 if enabled libcdio; then
4177     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4178     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
4179 fi
4180
4181 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4182
4183 enabled x11grab                                           &&
4184 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4185 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4186 { enabled xlib || die "ERROR: Xlib not found"; }
4187
4188 enabled vdpau &&
4189     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4190     disable vdpau
4191
4192 enabled vdpau && enabled xlib &&
4193     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4194     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4195     enable vdpau_x11
4196
4197 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4198
4199 # add some useful compiler flags if supported
4200 check_cflags -Wdeclaration-after-statement
4201 check_cflags -Wall
4202 check_cflags -Wdisabled-optimization
4203 check_cflags -Wpointer-arith
4204 check_cflags -Wredundant-decls
4205 check_cflags -Wcast-qual
4206 check_cflags -Wwrite-strings
4207 check_cflags -Wtype-limits
4208 check_cflags -Wundef
4209 check_cflags -Wmissing-prototypes
4210 check_cflags -Wstrict-prototypes
4211 enabled extra_warnings && check_cflags -Winline
4212
4213 check_disable_warning(){
4214     warning_flag=-W${1#-Wno-}
4215     test_cflags $warning_flag && add_cflags $1
4216 }
4217
4218 check_disable_warning -Wno-parentheses
4219 check_disable_warning -Wno-switch
4220 check_disable_warning -Wno-format-zero-length
4221 check_disable_warning -Wno-pointer-sign
4222
4223 # add some linker flags
4224 check_ldflags -Wl,--warn-common
4225 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4226 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4227
4228 # add some strip flags
4229 # -wN '..@*' is more selective than -x, but not available everywhere.
4230 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4231
4232 enabled neon_clobber_test &&
4233     check_ldflags -Wl,--wrap,avcodec_open2              \
4234                   -Wl,--wrap,avcodec_decode_audio4      \
4235                   -Wl,--wrap,avcodec_decode_video2      \
4236                   -Wl,--wrap,avcodec_decode_subtitle2   \
4237                   -Wl,--wrap,avcodec_encode_audio2      \
4238                   -Wl,--wrap,avcodec_encode_video2      \
4239                   -Wl,--wrap,avcodec_encode_subtitle    \
4240                   -Wl,--wrap,avresample_convert ||
4241     disable neon_clobber_test
4242
4243 enabled xmm_clobber_test &&
4244     check_ldflags -Wl,--wrap,avcodec_open2              \
4245                   -Wl,--wrap,avcodec_decode_audio4      \
4246                   -Wl,--wrap,avcodec_decode_video2      \
4247                   -Wl,--wrap,avcodec_decode_subtitle2   \
4248                   -Wl,--wrap,avcodec_encode_audio2      \
4249                   -Wl,--wrap,avcodec_encode_video2      \
4250                   -Wl,--wrap,avcodec_encode_subtitle    \
4251                   -Wl,--wrap,avresample_convert         \
4252                   -Wl,--wrap,sws_scale ||
4253     disable xmm_clobber_test
4254
4255 echo "X{};" > $TMPV
4256 if test_ldflags -Wl,--version-script,$TMPV; then
4257     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4258     check_cc <<EOF && enable symver_asm_label
4259 void ff_foo(void) __asm__ ("av_foo@VERSION");
4260 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4261 EOF
4262     check_cc <<EOF && enable symver_gnu_asm
4263 __asm__(".symver ff_foo,av_foo@VERSION");
4264 void ff_foo(void) {}
4265 EOF
4266 fi
4267
4268 if [ -z "$optflags" ]; then
4269     if enabled small; then
4270         optflags=$cflags_size
4271     elif enabled optimizations; then
4272         optflags=$cflags_speed
4273     else
4274         optflags=$cflags_noopt
4275     fi
4276 fi
4277
4278 check_optflags(){
4279     check_cflags "$@"
4280     enabled lto && check_ldflags "$@"
4281 }
4282
4283
4284 if enabled lto; then
4285     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4286     check_cflags  -flto
4287     check_ldflags -flto $cpuflags
4288 fi
4289
4290 check_optflags $optflags
4291 check_optflags -fno-math-errno
4292 check_optflags -fno-signed-zeros
4293
4294 if enabled icc; then
4295     # Just warnings, no remarks
4296     check_cflags -w1
4297     # -wd: Disable following warnings
4298     # 144, 167, 556: -Wno-pointer-sign
4299     # 1292: attribute "foo" ignored
4300     # 1419: external declaration in primary source file
4301     # 10006: ignoring unknown option -fno-signed-zeros
4302     # 10148: ignoring unknown option -Wno-parentheses
4303     # 10156: ignoring option '-W'; no argument required
4304     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4305     # 11030: Warning unknown option --as-needed
4306     # 10156: ignoring option '-export'; no argument required
4307     check_ldflags -wd10156,11030
4308     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4309     enable ebp_available
4310     if enabled x86_32; then
4311         icc_version=$($cc -dumpversion)
4312         test ${icc_version%%.*} -ge 11 &&
4313             check_cflags -falign-stack=maintain-16-byte ||
4314             disable aligned_stack
4315     fi
4316 elif enabled ccc; then
4317     # disable some annoying warnings
4318     add_cflags -msg_disable bitnotint
4319     add_cflags -msg_disable mixfuncvoid
4320     add_cflags -msg_disable nonstandcast
4321     add_cflags -msg_disable unsupieee
4322 elif enabled gcc; then
4323     check_optflags -fno-tree-vectorize
4324     check_cflags -Werror=implicit-function-declaration
4325     check_cflags -Werror=missing-prototypes
4326     check_cflags -Werror=return-type
4327     check_cflags -Werror=declaration-after-statement
4328     check_cflags -Werror=vla
4329     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4330 elif enabled llvm_gcc; then
4331     check_cflags -mllvm -stack-alignment=16
4332 elif enabled clang; then
4333     check_cflags -mllvm -stack-alignment=16
4334     check_cflags -Qunused-arguments
4335     check_cflags -Werror=implicit-function-declaration
4336     check_cflags -Werror=missing-prototypes
4337     check_cflags -Werror=return-type
4338 elif enabled cparser; then
4339     add_cflags -Wno-missing-variable-declarations
4340     add_cflags -Wno-empty-statement
4341 elif enabled armcc; then
4342     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
4343     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
4344     # 2523: use of inline assembly is deprecated
4345     add_cflags -W${armcc_opt},--diag_suppress=2523
4346     add_cflags -W${armcc_opt},--diag_suppress=1207
4347     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4348     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4349     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4350     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4351 elif enabled tms470; then
4352     add_cflags -pds=824 -pds=837
4353     disable inline_asm
4354 elif enabled pathscale; then
4355     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4356 elif enabled_any msvc icl; then
4357     enabled x86_32 && disable aligned_stack
4358     enabled_all x86_32 debug && add_cflags -Oy-
4359     enabled debug && add_ldflags -debug
4360     enable pragma_deprecated
4361     if enabled icl; then
4362         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4363         # (correctly) on icl 13.x.
4364         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4365             add_cflags -Qansi-alias
4366         # icl will pass the inline asm tests but inline asm is currently
4367         # not supported (build will fail)
4368         disable inline_asm
4369     fi
4370 fi
4371
4372 case $as_type in
4373     clang)
4374         add_asflags -Qunused-arguments
4375     ;;
4376 esac
4377
4378 case $ld_type in
4379     clang)
4380         check_ldflags -Qunused-arguments
4381     ;;
4382 esac
4383
4384 case $target_os in
4385     osf1)
4386         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4387     ;;
4388     plan9)
4389         add_cppflags -Dmain=plan9_main
4390     ;;
4391 esac
4392
4393 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4394
4395 check_deps $CONFIG_LIST       \
4396            $CONFIG_EXTRA      \
4397            $HAVE_LIST         \
4398            $ALL_COMPONENTS    \
4399
4400 enabled_all dxva2 CoTaskMemFree &&
4401     prepend avconv_libs $($ldflags_filter "-lole32") &&
4402     enable dxva2_lib
4403
4404 ! enabled_any memalign posix_memalign aligned_malloc &&
4405     enabled_any $need_memalign && enable memalign_hack
4406
4407 for thread in $THREADS_LIST; do
4408     if enabled $thread; then
4409         test -n "$thread_type" &&
4410             die "ERROR: Only one thread type must be selected." ||
4411             thread_type="$thread"
4412     fi
4413 done
4414
4415 # conditional library dependencies, in linking order
4416 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
4417 enabled resample_filter && prepend avfilter_deps "avresample"
4418 enabled scale_filter    && prepend avfilter_deps "swscale"
4419
4420 enabled opus_decoder    && prepend avcodec_deps "avresample"
4421
4422 expand_deps(){
4423     lib_deps=${1}_deps
4424     eval "deps=\$$lib_deps"
4425     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
4426     unique $lib_deps
4427 }
4428
4429 map 'expand_deps $v' $LIBRARY_LIST
4430
4431 echo "install prefix            $prefix"
4432 echo "source path               $source_path"
4433 echo "C compiler                $cc"
4434 echo "C library                 $libc_type"
4435 if test "$host_cc" != "$cc"; then
4436     echo "host C compiler           $host_cc"
4437     echo "host C library            $host_libc_type"
4438 fi
4439 echo "ARCH                      $arch ($cpu)"
4440 if test "$build_suffix" != ""; then
4441     echo "build suffix              $build_suffix"
4442 fi
4443 if test "$extra_version" != ""; then
4444     echo "version string suffix     $extra_version"
4445 fi
4446 echo "big-endian                ${bigendian-no}"
4447 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4448 if enabled x86; then
4449     echo "${yasmexe}                      ${yasm-no}"
4450     echo "MMX enabled               ${mmx-no}"
4451     echo "MMXEXT enabled            ${mmxext-no}"
4452     echo "3DNow! enabled            ${amd3dnow-no}"
4453     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4454     echo "SSE enabled               ${sse-no}"
4455     echo "SSSE3 enabled             ${ssse3-no}"
4456     echo "AVX enabled               ${avx-no}"
4457     echo "XOP enabled               ${xop-no}"
4458     echo "FMA3 enabled              ${fma3-no}"
4459     echo "FMA4 enabled              ${fma4-no}"
4460     echo "i686 features enabled     ${i686-no}"
4461     echo "CMOV is fast              ${fast_cmov-no}"
4462     echo "EBX available             ${ebx_available-no}"
4463     echo "EBP available             ${ebp_available-no}"
4464 fi
4465 if enabled aarch64; then
4466     echo "NEON enabled              ${neon-no}"
4467     echo "VFP enabled               ${vfp-no}"
4468 fi
4469 if enabled arm; then
4470     echo "ARMv5TE enabled           ${armv5te-no}"
4471     echo "ARMv6 enabled             ${armv6-no}"
4472     echo "ARMv6T2 enabled           ${armv6t2-no}"
4473     echo "VFP enabled               ${vfp-no}"
4474     echo "NEON enabled              ${neon-no}"
4475 fi
4476 if enabled ppc; then
4477     echo "AltiVec enabled           ${altivec-no}"
4478     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4479     echo "dcbzl available           ${dcbzl-no}"
4480 fi
4481 echo "debug symbols             ${debug-no}"
4482 echo "optimize for size         ${small-no}"
4483 echo "optimizations             ${optimizations-no}"
4484 echo "static                    ${static-no}"
4485 echo "shared                    ${shared-no}"
4486 echo "new filter support        ${avfilter-no}"
4487 echo "network support           ${network-no}"
4488 echo "threading support         ${thread_type-no}"
4489 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4490 echo "SDL support               ${sdl-no}"
4491 test -n "$random_seed" &&
4492     echo "random seed               ${random_seed}"
4493 echo
4494
4495 echo "External libraries:"
4496 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4497 echo
4498
4499 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4500     echo "Enabled ${type}s:"
4501     eval list=\$$(toupper $type)_LIST
4502     print_enabled '_*' $list | print_3_columns
4503     echo
4504 done
4505
4506 license="LGPL version 2.1 or later"
4507 if enabled nonfree; then
4508     license="nonfree and unredistributable"
4509 elif enabled gplv3; then
4510     license="GPL version 3 or later"
4511 elif enabled lgplv3; then
4512     license="LGPL version 3 or later"
4513 elif enabled gpl; then
4514     license="GPL version 2 or later"
4515 fi
4516
4517 echo "License: $license"
4518
4519 echo "Creating config.mak and config.h..."
4520
4521 test -e Makefile || echo "include $source_path/Makefile" > Makefile
4522
4523 config_files="$TMPH config.mak"
4524
4525 cat > config.mak <<EOF
4526 # Automatically generated by configure - do not modify!
4527 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
4528 prefix=$prefix
4529 LIBDIR=\$(DESTDIR)$libdir
4530 SHLIBDIR=\$(DESTDIR)$shlibdir
4531 INCDIR=\$(DESTDIR)$incdir
4532 BINDIR=\$(DESTDIR)$bindir
4533 DATADIR=\$(DESTDIR)$datadir
4534 DOCDIR=\$(DESTDIR)$docdir
4535 MANDIR=\$(DESTDIR)$mandir
4536 SRC_PATH=$source_path
4537 CC_IDENT=$cc_ident
4538 ARCH=$arch
4539 CC=$cc
4540 AS=$as
4541 LD=$ld
4542 DEPCC=$dep_cc
4543 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4544 DEPAS=$as
4545 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4546 YASM=$yasmexe
4547 DEPYASM=$yasmexe
4548 AR=$ar
4549 ARFLAGS=$arflags
4550 AR_O=$ar_o
4551 RANLIB=$ranlib
4552 STRIP=$strip
4553 LN_S=$ln_s
4554 CPPFLAGS=$CPPFLAGS
4555 CFLAGS=$CFLAGS
4556 ASFLAGS=$ASFLAGS
4557 AS_C=$AS_C
4558 AS_O=$AS_O
4559 CC_C=$CC_C
4560 CC_E=$CC_E
4561 CC_O=$CC_O
4562 LD_O=$LD_O
4563 LD_LIB=$LD_LIB
4564 LD_PATH=$LD_PATH
4565 DLLTOOL=$dlltool
4566 LDFLAGS=$LDFLAGS
4567 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4568 STRIPFLAGS=$STRIPFLAGS
4569 YASMFLAGS=$YASMFLAGS
4570 BUILDSUF=$build_suffix
4571 FULLNAME=$FULLNAME
4572 LIBPREF=$LIBPREF
4573 LIBSUF=$LIBSUF
4574 LIBNAME=$LIBNAME
4575 SLIBPREF=$SLIBPREF
4576 SLIBSUF=$SLIBSUF
4577 EXESUF=$EXESUF
4578 EXTRA_VERSION=$extra_version
4579 CCDEP=$CCDEP
4580 CCDEP_FLAGS=$CCDEP_FLAGS
4581 ASDEP=$ASDEP
4582 ASDEP_FLAGS=$ASDEP_FLAGS
4583 CC_DEPFLAGS=$CC_DEPFLAGS
4584 AS_DEPFLAGS=$AS_DEPFLAGS
4585 HOSTCC=$host_cc
4586 HOSTLD=$host_ld
4587 HOSTCFLAGS=$host_cflags
4588 HOSTCPPFLAGS=$host_cppflags
4589 HOSTEXESUF=$HOSTEXESUF
4590 HOSTLDFLAGS=$host_ldflags
4591 HOSTLIBS=$host_libs
4592 DEPHOSTCC=$host_cc
4593 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4594 HOSTCCDEP=$HOSTCCDEP
4595 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4596 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4597 HOSTCC_C=$HOSTCC_C
4598 HOSTCC_O=$HOSTCC_O
4599 HOSTLD_O=$HOSTLD_O
4600 TARGET_EXEC=$target_exec $target_exec_args
4601 TARGET_PATH=$target_path
4602 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4603 CFLAGS-avplay=$sdl_cflags
4604 ZLIB=$($ldflags_filter -lz)
4605 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4606 EXTRALIBS=$extralibs
4607 COMPAT_OBJS=$compat_objs
4608 EXEOBJS=$exeobjs
4609 INSTALL=install
4610 LIBTARGET=${LIBTARGET}
4611 SLIBNAME=${SLIBNAME}
4612 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4613 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4614 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4615 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4616 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4617 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4618 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4619 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4620 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4621 EOF
4622
4623 get_version(){
4624     lcname=lib${1}
4625     name=$(toupper $lcname)
4626     file=$source_path/$lcname/version.h
4627     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4628     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4629     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4630     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4631     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4632 }
4633
4634 map 'get_version $v' $LIBRARY_LIST
4635
4636 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
4637
4638 print_program_libs(){
4639     eval "program_libs=\$${1}_libs"
4640     eval echo "LIBS-${1}=${program_libs}" >> config.mak
4641 }
4642
4643 map 'print_program_libs $v' $PROGRAM_LIST
4644
4645 cat > $TMPH <<EOF
4646 /* Automatically generated by configure - do not modify! */
4647 #ifndef LIBAV_CONFIG_H
4648 #define LIBAV_CONFIG_H
4649 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4650 #define LIBAV_LICENSE "$(c_escape $license)"
4651 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4652 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4653 #define restrict $_restrict
4654 #define EXTERN_PREFIX "${extern_prefix}"
4655 #define EXTERN_ASM ${extern_prefix}
4656 #define SLIBSUF "$SLIBSUF"
4657 EOF
4658
4659 test -n "$malloc_prefix" &&
4660     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4661
4662 if enabled yasm; then
4663     append config_files $TMPASM
4664     printf '' >$TMPASM
4665 fi
4666
4667 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4668
4669 print_config ARCH_   "$config_files" $ARCH_LIST
4670 print_config HAVE_   "$config_files" $HAVE_LIST
4671 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4672                                      $CONFIG_EXTRA      \
4673                                      $ALL_COMPONENTS    \
4674
4675 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4676
4677 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4678 cp_if_changed $TMPH config.h
4679 touch .config
4680
4681 enabled yasm && cp_if_changed $TMPASM config.asm
4682
4683 cat > $TMPH <<EOF
4684 /* Generated by ffconf */
4685 #ifndef AVUTIL_AVCONFIG_H
4686 #define AVUTIL_AVCONFIG_H
4687 EOF
4688
4689 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4690
4691 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4692
4693 cp_if_changed $TMPH libavutil/avconfig.h
4694
4695 test -n "$WARNINGS" && printf "\n$WARNINGS"
4696
4697 # build pkg-config files
4698
4699 lib_version(){
4700     eval printf "\"lib${1} >= \$LIB$(toupper ${1})_VERSION, \""
4701 }
4702
4703 pkgconfig_generate(){
4704     name=$1
4705     shortname=${name#lib}${build_suffix}
4706     comment=$2
4707     version=$3
4708     libs=$4
4709     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
4710     requires=${requires%, }
4711     enabled ${name#lib} || return 0
4712     mkdir -p $name
4713     cat <<EOF > $name/$name.pc
4714 prefix=$prefix
4715 exec_prefix=\${prefix}
4716 libdir=$libdir
4717 includedir=$incdir
4718
4719 Name: $name
4720 Description: $comment
4721 Version: $version
4722 Requires: $(enabled shared || echo $requires)
4723 Requires.private: $(enabled shared && echo $requires)
4724 Conflicts:
4725 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4726 Libs.private: $(enabled shared && echo $libs)
4727 Cflags: -I\${includedir}
4728 EOF
4729     cat <<EOF > $name/$name-uninstalled.pc
4730 prefix=
4731 exec_prefix=
4732 libdir=\${pcfiledir}
4733 includedir=${source_path}
4734
4735 Name: $name
4736 Description: $comment
4737 Version: $version
4738 Requires: $requires
4739 Conflicts:
4740 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4741 Cflags: -I\${includedir}
4742 EOF
4743 }
4744
4745 pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBM"
4746 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs"
4747 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs"
4748 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs"
4749 pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs"
4750 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs"
4751 pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"