configure: Drop duplicate pkg-config entry from help output
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89
90 Licensing options:
91   --enable-gpl             allow use of GPL code, the resulting libs
92                            and binaries will be under GPL [no]
93   --enable-version3        upgrade (L)GPL to version 3 [no]
94   --enable-nonfree         allow use of nonfree code, the resulting libs
95                            and binaries will be unredistributable [no]
96
97 Configuration options:
98   --disable-static         do not build static libraries [no]
99   --enable-shared          build shared libraries [no]
100   --enable-small           optimize for size instead of speed
101   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
102   --enable-gray            enable full grayscale support (slower color)
103   --disable-swscale-alpha  disable alpha channel support in swscale
104   --disable-all            disable building components, libraries and programs
105
106 Program options:
107   --disable-programs       do not build command line programs
108   --disable-avconv         disable avconv build
109   --disable-avplay         disable avplay build
110   --disable-avprobe        disable avprobe build
111   --disable-avserver       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 assembler optimizations
267   --disable-altivec        disable AltiVec optimizations
268   --disable-amd3dnow       disable 3DNow! optimizations
269   --disable-amd3dnowext    disable 3DNow! extended optimizations
270   --disable-mmx            disable MMX optimizations
271   --disable-mmxext         disable MMXEXT optimizations
272   --disable-sse            disable SSE optimizations
273   --disable-sse2           disable SSE2 optimizations
274   --disable-sse3           disable SSE3 optimizations
275   --disable-ssse3          disable SSSE3 optimizations
276   --disable-sse4           disable SSE4 optimizations
277   --disable-sse42          disable SSE4.2 optimizations
278   --disable-avx            disable AVX optimizations
279   --disable-xop            disable XOP optimizations
280   --disable-fma3           disable FMA3 optimizations
281   --disable-fma4           disable FMA4 optimizations
282   --disable-avx2           disable AVX2 optimizations
283   --disable-armv5te        disable armv5te optimizations
284   --disable-armv6          disable armv6 optimizations
285   --disable-armv6t2        disable armv6t2 optimizations
286   --disable-vfp            disable VFP optimizations
287   --disable-neon           disable NEON optimizations
288   --disable-inline-asm     disable use of inline assembler
289   --disable-yasm           disable use of yasm assembler
290
291 Developer options (useful when working on Libav itself):
292   --disable-debug          disable debugging symbols
293   --enable-debug=LEVEL     set the debug level [$debuglevel]
294   --disable-optimizations  disable compiler optimizations
295   --enable-extra-warnings  enable more compiler warnings
296   --samples=PATH           location of test samples for FATE, if not set use
297                            \$LIBAV_SAMPLES at make invocation time.
298   --enable-neon-clobber-test check NEON registers for clobbering (should be
299                            used only for debugging purposes)
300   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
301                            should be used only for debugging purposes)
302   --enable-random          randomly enable/disable components
303   --disable-random
304   --enable-random=LIST     randomly enable/disable specific components or
305   --disable-random=LIST    component groups. LIST is a comma-separated list
306                            of NAME[:PROB] entries where NAME is a component
307                            (group) and PROB the probability associated with
308                            NAME (default 0.5).
309   --random-seed=VALUE      seed value for --enable/disable-random
310
311 NOTE: Object files are built at the place where configure is launched.
312 EOF
313   exit 0
314 }
315
316 quotes='""'
317
318 log(){
319     echo "$@" >> $logfile
320 }
321
322 log_file(){
323     log BEGIN $1
324     pr -n -t $1 >> $logfile
325     log END $1
326 }
327
328 echolog(){
329     log "$@"
330     echo "$@"
331 }
332
333 warn(){
334     log "WARNING: $*"
335     WARNINGS="${WARNINGS}WARNING: $*\n"
336 }
337
338 die(){
339     echolog "$@"
340     cat <<EOF
341
342 If you think configure made a mistake, make sure you are using the latest
343 version from Git.  If the latest version fails, report the problem to the
344 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
345 EOF
346     if disabled logging; then
347         cat <<EOF
348 Rerun configure with logging enabled (do not use --disable-logging), and
349 include the log this produces with your report.
350 EOF
351     else
352         cat <<EOF
353 Include the log file "$logfile" produced by configure as this will help
354 solving the problem.
355 EOF
356     fi
357     exit 1
358 }
359
360 # Avoid locale weirdness, besides we really just want to translate ASCII.
361 toupper(){
362     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
363 }
364
365 tolower(){
366     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
367 }
368
369 c_escape(){
370     echo "$*" | sed 's/["\\]/\\\0/g'
371 }
372
373 sh_quote(){
374     v=$(echo "$1" | sed "s/'/'\\\\''/g")
375     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
376     echo "$v"
377 }
378
379 cleanws(){
380     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
381 }
382
383 filter(){
384     pat=$1
385     shift
386     for v; do
387         eval "case $v in $pat) echo $v ;; esac"
388     done
389 }
390
391 filter_out(){
392     pat=$1
393     shift
394     for v; do
395         eval "case $v in $pat) ;; *) echo $v ;; esac"
396     done
397 }
398
399 map(){
400     m=$1
401     shift
402     for v; do eval $m; done
403 }
404
405 add_suffix(){
406     suffix=$1
407     shift
408     for v; do echo ${v}${suffix}; done
409 }
410
411 set_all(){
412     value=$1
413     shift
414     for var in $*; do
415         eval $var=$value
416     done
417 }
418
419 set_weak(){
420     value=$1
421     shift
422     for var; do
423         eval : \${$var:=$value}
424     done
425 }
426
427 sanitize_var_name(){
428     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
429 }
430
431 set_safe(){
432     var=$1
433     shift
434     eval $(sanitize_var_name "$var")='$*'
435 }
436
437 get_safe(){
438     eval echo \$$(sanitize_var_name "$1")
439 }
440
441 pushvar(){
442     for pvar in $*; do
443         eval level=\${${pvar}_level:=0}
444         eval ${pvar}_${level}="\$$pvar"
445         eval ${pvar}_level=$(($level+1))
446     done
447 }
448
449 popvar(){
450     for pvar in $*; do
451         eval level=\${${pvar}_level:-0}
452         test $level = 0 && continue
453         eval level=$(($level-1))
454         eval $pvar="\${${pvar}_${level}}"
455         eval ${pvar}_level=$level
456         eval unset ${pvar}_${level}
457     done
458 }
459
460 enable(){
461     set_all yes $*
462 }
463
464 disable(){
465     set_all no $*
466 }
467
468 enable_weak(){
469     set_weak yes $*
470 }
471
472 disable_weak(){
473     set_weak no $*
474 }
475
476 enable_safe(){
477     for var; do
478         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
479     done
480 }
481
482 disable_safe(){
483     for var; do
484         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
485     done
486 }
487
488 do_enable_deep(){
489     for var; do
490         enabled $var && continue
491         eval sel="\$${var}_select"
492         eval sgs="\$${var}_suggest"
493         pushvar var sgs
494         enable_deep $sel
495         popvar sgs
496         enable_deep_weak $sgs
497         popvar var
498     done
499 }
500
501 enable_deep(){
502     do_enable_deep $*
503     enable $*
504 }
505
506 enable_deep_weak(){
507     for var; do
508         disabled $var && continue
509         pushvar var
510         do_enable_deep $var
511         popvar var
512         enable_weak $var
513     done
514 }
515
516 enabled(){
517     test "${1#!}" = "$1" && op== || op=!=
518     eval test "x\$${1#!}" $op "xyes"
519 }
520
521 disabled(){
522     test "${1#!}" = "$1" && op== || op=!=
523     eval test "x\$${1#!}" $op "xno"
524 }
525
526 enabled_all(){
527     for opt; do
528         enabled $opt || return 1
529     done
530 }
531
532 disabled_all(){
533     for opt; do
534         disabled $opt || return 1
535     done
536 }
537
538 enabled_any(){
539     for opt; do
540         enabled $opt && return 0
541     done
542 }
543
544 disabled_any(){
545     for opt; do
546         disabled $opt && return 0
547     done
548     return 1
549 }
550
551 set_default(){
552     for opt; do
553         eval : \${$opt:=\$${opt}_default}
554     done
555 }
556
557 is_in(){
558     value=$1
559     shift
560     for var in $*; do
561         [ $var = $value ] && return 0
562     done
563     return 1
564 }
565
566 do_check_deps(){
567     for cfg; do
568         cfg="${cfg#!}"
569         enabled ${cfg}_checking && die "Circular dependency for $cfg."
570         disabled ${cfg}_checking && continue
571         enable ${cfg}_checking
572         append allopts $cfg
573
574         eval dep_all="\$${cfg}_deps"
575         eval dep_any="\$${cfg}_deps_any"
576         eval dep_sel="\$${cfg}_select"
577         eval dep_sgs="\$${cfg}_suggest"
578         eval dep_ifa="\$${cfg}_if"
579         eval dep_ifn="\$${cfg}_if_any"
580
581         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
582         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
583         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
584
585         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
586         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
587         enabled_all  $dep_all || disable $cfg
588         enabled_any  $dep_any || disable $cfg
589         disabled_any $dep_sel && disable $cfg
590
591         if enabled $cfg; then
592             enable_deep $dep_sel
593             enable_deep_weak $dep_sgs
594         fi
595
596         disable ${cfg}_checking
597     done
598 }
599
600 check_deps(){
601     unset allopts
602
603     do_check_deps "$@"
604
605     for cfg in $allopts; do
606         enabled $cfg || continue
607         eval dep_extralibs="\$${cfg}_extralibs"
608         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
609     done
610 }
611
612 print_config(){
613     pfx=$1
614     files=$2
615     shift 2
616     map 'eval echo "$v \${$v:-no}"' "$@" |
617     awk "BEGIN { split(\"$files\", files) }
618         {
619             c = \"$pfx\" toupper(\$1);
620             v = \$2;
621             sub(/yes/, 1, v);
622             sub(/no/,  0, v);
623             for (f in files) {
624                 file = files[f];
625                 if (file ~ /\\.h\$/) {
626                     printf(\"#define %s %d\\n\", c, v) >>file;
627                 } else if (file ~ /\\.asm\$/) {
628                     printf(\"%%define %s %d\\n\", c, v) >>file;
629                 } else if (file ~ /\\.mak\$/) {
630                     n = -v ? \"\" : \"!\";
631                     printf(\"%s%s=yes\\n\", n, c) >>file;
632                 }
633             }
634         }"
635 }
636
637 print_enabled(){
638     suf=$1
639     shift
640     for v; do
641         enabled $v && printf "%s\n" ${v%$suf};
642     done
643 }
644
645 append(){
646     var=$1
647     shift
648     eval "$var=\"\$$var $*\""
649 }
650
651 prepend(){
652     var=$1
653     shift
654     eval "$var=\"$* \$$var\""
655 }
656
657 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     blockdsp
1533     cabac
1534     dsputil
1535     gcrypt
1536     golomb
1537     gplv3
1538     h263dsp
1539     h264chroma
1540     h264dsp
1541     h264pred
1542     h264qpel
1543     hpeldsp
1544     huffman
1545     huffyuvdsp
1546     huffyuvencdsp
1547     intrax8
1548     lgplv3
1549     lpc
1550     mpegaudio
1551     mpegaudiodsp
1552     mpegvideo
1553     mpegvideoenc
1554     nettle
1555     qpeldsp
1556     rangecoder
1557     riffdec
1558     riffenc
1559     rtpdec
1560     rtpenc_chain
1561     sinewin
1562     tpeldsp
1563     videodsp
1564     vp3dsp
1565 "
1566
1567 CMDLINE_SELECT="
1568     $ARCH_EXT_LIST
1569     $CONFIG_LIST
1570     $HAVE_LIST_CMDLINE
1571     $THREADS_LIST
1572     asm
1573     cross_compile
1574     debug
1575     extra_warnings
1576     logging
1577     lto
1578     optimizations
1579 "
1580
1581 PATHS_LIST="
1582     bindir
1583     datadir
1584     docdir
1585     incdir
1586     libdir
1587     mandir
1588     prefix
1589     shlibdir
1590 "
1591
1592 CMDLINE_SET="
1593     $PATHS_LIST
1594     ar
1595     arch
1596     as
1597     build_suffix
1598     cc
1599     cpu
1600     cross_prefix
1601     dep_cc
1602     extra_version
1603     host_cc
1604     host_cflags
1605     host_ld
1606     host_ldflags
1607     host_libs
1608     host_os
1609     ld
1610     logfile
1611     malloc_prefix
1612     nm
1613     optflags
1614     pkg_config
1615     pkg_config_flags
1616     random_seed
1617     samples
1618     sysinclude
1619     sysroot
1620     target_exec
1621     target_os
1622     target_path
1623     target_samples
1624     toolchain
1625 "
1626
1627 CMDLINE_APPEND="
1628     extra_cflags
1629     host_cppflags
1630 "
1631
1632 # code dependency declarations
1633
1634 # architecture extensions
1635
1636 armv5te_deps="arm"
1637 armv6_deps="arm"
1638 armv6t2_deps="arm"
1639 armv8_deps="aarch64"
1640 neon_deps_any="aarch64 arm"
1641 vfp_deps_any="aarch64 arm"
1642 vfpv3_deps="vfp"
1643
1644 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1645
1646 altivec_deps="ppc"
1647 ppc4xx_deps="ppc"
1648
1649 cpunop_deps="i686"
1650 x86_64_select="i686"
1651 x86_64_suggest="fast_cmov"
1652
1653 amd3dnow_deps="mmx"
1654 amd3dnowext_deps="amd3dnow"
1655 i686_deps="x86"
1656 mmx_deps="x86"
1657 mmxext_deps="mmx"
1658 sse_deps="mmxext"
1659 sse2_deps="sse"
1660 sse3_deps="sse2"
1661 ssse3_deps="sse3"
1662 sse4_deps="ssse3"
1663 sse42_deps="sse4"
1664 avx_deps="sse42"
1665 xop_deps="avx"
1666 fma3_deps="avx"
1667 fma4_deps="avx"
1668 avx2_deps="avx"
1669
1670 mmx_external_deps="yasm"
1671 mmx_inline_deps="inline_asm"
1672 mmx_suggest="mmx_external mmx_inline"
1673
1674 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1675     eval dep=\$${ext}_deps
1676     eval ${ext}_external_deps='"${dep}_external"'
1677     eval ${ext}_inline_deps='"${dep}_inline"'
1678     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1679 done
1680
1681 aligned_stack_if_any="aarch64 ppc x86"
1682 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1683 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1684 fast_unaligned_if_any="aarch64 ppc x86"
1685
1686 need_memalign="altivec neon sse"
1687
1688 # system capabilities
1689 log2_deps="!libc_msvcrt"
1690
1691 symver_if_any="symver_asm_label symver_gnu_asm"
1692
1693 # threading support
1694 atomics_gcc_if="sync_val_compare_and_swap"
1695 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1696 atomics_win32_if="MemoryBarrier"
1697 atomics_native_if_any="$ATOMICS_LIST"
1698 w32threads_deps="atomics_native"
1699 threads_if_any="$THREADS_LIST"
1700
1701 # subsystems
1702 dct_select="rdft"
1703 error_resilience_select="dsputil"
1704 mdct_select="fft"
1705 rdft_select="fft"
1706 mpegaudio_select="mpegaudiodsp"
1707 mpegaudiodsp_select="dct"
1708 mpegvideo_select="blockdsp dsputil hpeldsp videodsp"
1709 mpegvideoenc_select="dsputil mpegvideo qpeldsp"
1710
1711 # decoders / encoders
1712 aac_decoder_select="mdct sinewin"
1713 aac_encoder_select="audio_frame_queue mdct sinewin"
1714 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1715 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1716 ac3_encoder_select="mdct ac3dsp dsputil"
1717 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1718 aic_decoder_select="dsputil golomb"
1719 alac_encoder_select="lpc"
1720 als_decoder_select="dsputil"
1721 amrnb_decoder_select="lsp"
1722 amrwb_decoder_select="lsp"
1723 amv_decoder_select="sp5x_decoder"
1724 ape_decoder_select="dsputil"
1725 asv1_decoder_select="blockdsp dsputil"
1726 asv1_encoder_select="dsputil"
1727 asv2_decoder_select="blockdsp dsputil"
1728 asv2_encoder_select="dsputil"
1729 atrac1_decoder_select="mdct sinewin"
1730 atrac3_decoder_select="mdct"
1731 atrac3p_decoder_select="mdct sinewin"
1732 bink_decoder_select="blockdsp hpeldsp"
1733 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1734 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1735 cavs_decoder_select="blockdsp dsputil golomb h264chroma qpeldsp videodsp"
1736 cllc_decoder_select="dsputil"
1737 comfortnoise_encoder_select="lpc"
1738 cook_decoder_select="dsputil mdct sinewin"
1739 cscd_decoder_select="lzo"
1740 cscd_decoder_suggest="zlib"
1741 dca_decoder_select="mdct"
1742 dnxhd_decoder_select="blockdsp dsputil"
1743 dnxhd_encoder_select="aandcttables blockdsp dsputil mpegvideoenc"
1744 dvvideo_decoder_select="dsputil"
1745 dvvideo_encoder_select="dsputil"
1746 dxa_decoder_deps="zlib"
1747 eac3_decoder_select="ac3_decoder"
1748 eac3_encoder_select="ac3_encoder"
1749 eamad_decoder_select="aandcttables blockdsp dsputil mpegvideo"
1750 eatgq_decoder_select="aandcttables dsputil"
1751 eatqi_decoder_select="aandcttables blockdsp dsputil error_resilience mpegvideo"
1752 exr_decoder_deps="zlib"
1753 ffv1_decoder_select="golomb rangecoder"
1754 ffv1_encoder_select="rangecoder"
1755 ffvhuff_decoder_select="huffyuv_decoder"
1756 ffvhuff_encoder_select="huffyuv_encoder"
1757 fic_decoder_select="golomb"
1758 flac_decoder_select="golomb"
1759 flac_encoder_select="dsputil golomb lpc"
1760 flashsv_decoder_deps="zlib"
1761 flashsv_encoder_deps="zlib"
1762 flashsv2_decoder_deps="zlib"
1763 flv_decoder_select="h263_decoder"
1764 flv_encoder_select="h263_encoder"
1765 fourxm_decoder_select="blockdsp dsputil"
1766 fraps_decoder_select="dsputil huffman"
1767 g2m_decoder_deps="zlib"
1768 g2m_decoder_select="blockdsp dsputil"
1769 h261_decoder_select="error_resilience mpegvideo"
1770 h261_encoder_select="aandcttables mpegvideoenc"
1771 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo qpeldsp"
1772 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1773 h263i_decoder_select="h263_decoder"
1774 h263p_encoder_select="h263_encoder"
1775 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
1776 h264_decoder_suggest="error_resilience"
1777 hevc_decoder_select="cabac dsputil golomb videodsp"
1778 huffyuv_decoder_select="dsputil huffyuvdsp"
1779 huffyuv_encoder_select="dsputil huffman huffyuvencdsp"
1780 iac_decoder_select="imc_decoder"
1781 imc_decoder_select="dsputil fft mdct sinewin"
1782 indeo3_decoder_select="hpeldsp"
1783 interplay_video_decoder_select="hpeldsp"
1784 jpegls_decoder_select="golomb mjpeg_decoder"
1785 jpegls_encoder_select="golomb"
1786 jv_decoder_select="blockdsp"
1787 lagarith_decoder_select="huffyuvdsp"
1788 ljpeg_encoder_select="aandcttables mpegvideoenc"
1789 loco_decoder_select="golomb"
1790 mdec_decoder_select="blockdsp dsputil error_resilience mpegvideo"
1791 metasound_decoder_select="lsp mdct sinewin"
1792 mimic_decoder_select="blockdsp dsputil hpeldsp"
1793 mjpeg_decoder_select="blockdsp dsputil hpeldsp"
1794 mjpeg_encoder_select="aandcttables mpegvideoenc"
1795 mjpegb_decoder_select="mjpeg_decoder"
1796 mlp_decoder_select="mlp_parser"
1797 motionpixels_decoder_select="dsputil"
1798 mp1_decoder_select="mpegaudio"
1799 mp1float_decoder_select="mpegaudio"
1800 mp2_decoder_select="mpegaudio"
1801 mp2float_decoder_select="mpegaudio"
1802 mp3_decoder_select="mpegaudio"
1803 mp3adu_decoder_select="mpegaudio"
1804 mp3adufloat_decoder_select="mpegaudio"
1805 mp3float_decoder_select="mpegaudio"
1806 mp3on4_decoder_select="mpegaudio"
1807 mp3on4float_decoder_select="mpegaudio"
1808 mpc7_decoder_select="dsputil mpegaudiodsp"
1809 mpc8_decoder_select="mpegaudiodsp"
1810 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1811 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1812 mpeg1video_decoder_select="error_resilience mpegvideo"
1813 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1814 mpeg2video_decoder_select="error_resilience mpegvideo"
1815 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1816 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1817 mpeg4_encoder_select="h263_encoder"
1818 msmpeg4v1_decoder_select="h263_decoder"
1819 msmpeg4v2_decoder_select="h263_decoder"
1820 msmpeg4v2_encoder_select="h263_encoder"
1821 msmpeg4v3_decoder_select="h263_decoder"
1822 msmpeg4v3_encoder_select="h263_encoder"
1823 mss2_decoder_select="error_resilience qpeldsp vc1_decoder"
1824 mxpeg_decoder_select="mjpeg_decoder"
1825 nellymoser_decoder_select="mdct sinewin"
1826 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1827 nuv_decoder_select="dsputil lzo"
1828 on2avc_decoder_select="mdct"
1829 opus_decoder_deps="avresample"
1830 png_decoder_deps="zlib"
1831 png_encoder_deps="zlib"
1832 png_encoder_select="huffyuvencdsp"
1833 prores_decoder_select="dsputil"
1834 prores_encoder_select="dsputil"
1835 qcelp_decoder_select="lsp"
1836 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1837 ra_144_encoder_select="audio_frame_queue lpc"
1838 ralf_decoder_select="golomb"
1839 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1840 rv10_encoder_select="h263_encoder"
1841 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1842 rv20_encoder_select="h263_encoder"
1843 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1844 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1845 shorten_decoder_select="golomb"
1846 sipr_decoder_select="lsp"
1847 sp5x_decoder_select="mjpeg_decoder"
1848 svq1_decoder_select="hpeldsp"
1849 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1850 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1851 svq3_decoder_suggest="zlib"
1852 tak_decoder_select="dsputil"
1853 theora_decoder_select="vp3_decoder"
1854 thp_decoder_select="mjpeg_decoder"
1855 tiff_decoder_suggest="zlib"
1856 tiff_encoder_suggest="zlib"
1857 truehd_decoder_select="mlp_decoder"
1858 truemotion2_decoder_select="dsputil"
1859 truespeech_decoder_select="dsputil"
1860 tscc_decoder_deps="zlib"
1861 twinvq_decoder_select="mdct lsp sinewin"
1862 utvideo_decoder_select="dsputil"
1863 utvideo_encoder_select="dsputil huffman huffyuvencdsp"
1864 vble_decoder_select="huffyuvdsp"
1865 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 qpeldsp"
1866 vc1image_decoder_select="vc1_decoder"
1867 vorbis_decoder_select="mdct"
1868 vorbis_encoder_select="mdct"
1869 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1870 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1871 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1872 vp6a_decoder_select="vp6_decoder"
1873 vp6f_decoder_select="vp6_decoder"
1874 vp7_decoder_select="h264pred videodsp"
1875 vp8_decoder_select="h264pred videodsp"
1876 vp9_decoder_select="videodsp"
1877 webp_decoder_select="vp8_decoder"
1878 wmapro_decoder_select="mdct sinewin"
1879 wmav1_decoder_select="mdct sinewin"
1880 wmav1_encoder_select="mdct sinewin"
1881 wmav2_decoder_select="mdct sinewin"
1882 wmav2_encoder_select="mdct sinewin"
1883 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1884 wmv1_decoder_select="h263_decoder"
1885 wmv1_encoder_select="h263_encoder"
1886 wmv2_decoder_select="blockdsp h263_decoder intrax8 videodsp"
1887 wmv2_encoder_select="h263_encoder"
1888 wmv3_decoder_select="vc1_decoder"
1889 wmv3image_decoder_select="wmv3_decoder"
1890 zerocodec_decoder_deps="zlib"
1891 zlib_decoder_deps="zlib"
1892 zlib_encoder_deps="zlib"
1893 zmbv_decoder_deps="zlib"
1894 zmbv_encoder_deps="zlib"
1895
1896 # hardware accelerators
1897 dxva2_deps="dxva2api_h"
1898 vaapi_deps="va_va_h"
1899 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1900 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1901 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1902
1903 h263_vaapi_hwaccel_deps="vaapi"
1904 h263_vaapi_hwaccel_select="h263_decoder"
1905 h263_vdpau_hwaccel_deps="vdpau"
1906 h263_vdpau_hwaccel_select="h263_decoder"
1907 h264_dxva2_hwaccel_deps="dxva2"
1908 h264_dxva2_hwaccel_select="h264_decoder"
1909 h264_vaapi_hwaccel_deps="vaapi"
1910 h264_vaapi_hwaccel_select="h264_decoder"
1911 h264_vda_hwaccel_deps="vda"
1912 h264_vda_hwaccel_select="h264_decoder"
1913 h264_vda_old_hwaccel_deps="vda"
1914 h264_vda_old_hwaccel_select="h264_decoder"
1915 h264_vdpau_hwaccel_deps="vdpau"
1916 h264_vdpau_hwaccel_select="h264_decoder"
1917 mpeg1_vdpau_hwaccel_deps="vdpau"
1918 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1919 mpeg2_dxva2_hwaccel_deps="dxva2"
1920 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1921 mpeg2_vaapi_hwaccel_deps="vaapi"
1922 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1923 mpeg2_vdpau_hwaccel_deps="vdpau"
1924 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1925 mpeg4_vaapi_hwaccel_deps="vaapi"
1926 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1927 mpeg4_vdpau_hwaccel_deps="vdpau"
1928 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1929 vc1_dxva2_hwaccel_deps="dxva2"
1930 vc1_dxva2_hwaccel_select="vc1_decoder"
1931 vc1_vaapi_hwaccel_deps="vaapi"
1932 vc1_vaapi_hwaccel_select="vc1_decoder"
1933 vc1_vdpau_hwaccel_deps="vdpau"
1934 vc1_vdpau_hwaccel_select="vc1_decoder"
1935 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1936 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1937 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1938
1939 # parsers
1940 h264_parser_select="h264_decoder"
1941 mpegvideo_parser_select="error_resilience mpegvideo"
1942 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
1943 vc1_parser_select="mpegvideo"
1944
1945 # external libraries
1946 libfaac_encoder_deps="libfaac"
1947 libfaac_encoder_select="audio_frame_queue"
1948 libfdk_aac_decoder_deps="libfdk_aac"
1949 libfdk_aac_encoder_deps="libfdk_aac"
1950 libfdk_aac_encoder_select="audio_frame_queue"
1951 libgsm_decoder_deps="libgsm"
1952 libgsm_encoder_deps="libgsm"
1953 libgsm_ms_decoder_deps="libgsm"
1954 libgsm_ms_encoder_deps="libgsm"
1955 libilbc_decoder_deps="libilbc"
1956 libilbc_encoder_deps="libilbc"
1957 libmp3lame_encoder_deps="libmp3lame"
1958 libmp3lame_encoder_select="audio_frame_queue"
1959 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1960 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1961 libopencore_amrnb_encoder_select="audio_frame_queue"
1962 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1963 libopenjpeg_decoder_deps="libopenjpeg"
1964 libopenjpeg_encoder_deps="libopenjpeg"
1965 libopus_decoder_deps="libopus"
1966 libopus_encoder_deps="libopus"
1967 libopus_encoder_select="audio_frame_queue"
1968 libschroedinger_decoder_deps="libschroedinger"
1969 libschroedinger_encoder_deps="libschroedinger"
1970 libspeex_decoder_deps="libspeex"
1971 libspeex_encoder_deps="libspeex"
1972 libspeex_encoder_select="audio_frame_queue"
1973 libtheora_encoder_deps="libtheora"
1974 libtwolame_encoder_deps="libtwolame"
1975 libvo_aacenc_encoder_deps="libvo_aacenc"
1976 libvo_aacenc_encoder_select="audio_frame_queue"
1977 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1978 libvorbis_encoder_deps="libvorbis"
1979 libvorbis_encoder_select="audio_frame_queue"
1980 libvpx_vp8_decoder_deps="libvpx"
1981 libvpx_vp8_encoder_deps="libvpx"
1982 libvpx_vp9_decoder_deps="libvpx"
1983 libvpx_vp9_encoder_deps="libvpx"
1984 libwavpack_encoder_deps="libwavpack"
1985 libwebp_encoder_deps="libwebp"
1986 libx264_encoder_deps="libx264"
1987 libx265_encoder_deps="libx265"
1988 libxavs_encoder_deps="libxavs"
1989 libxvid_encoder_deps="libxvid"
1990
1991 # demuxers / muxers
1992 ac3_demuxer_select="ac3_parser"
1993 asf_demuxer_select="riffdec"
1994 asf_muxer_select="riffenc"
1995 asf_stream_muxer_select="asf_muxer"
1996 avi_demuxer_select="riffdec"
1997 avi_muxer_select="riffenc"
1998 avisynth_demuxer_deps="avisynth"
1999 avisynth_demuxer_select="riffdec"
2000 caf_demuxer_select="riffdec"
2001 dirac_demuxer_select="dirac_parser"
2002 dxa_demuxer_select="riffdec"
2003 eac3_demuxer_select="ac3_parser"
2004 f4v_muxer_select="mov_muxer"
2005 flac_demuxer_select="flac_parser"
2006 hds_muxer_select="flv_muxer"
2007 hls_muxer_select="mpegts_muxer"
2008 ipod_muxer_select="mov_muxer"
2009 ismv_muxer_select="mov_muxer"
2010 matroska_audio_muxer_select="matroska_muxer"
2011 matroska_demuxer_select="riffdec"
2012 matroska_demuxer_suggest="bzlib lzo zlib"
2013 matroska_muxer_select="riffenc"
2014 mmf_muxer_select="riffenc"
2015 mov_demuxer_select="riffdec"
2016 mov_demuxer_suggest="zlib"
2017 mov_muxer_select="riffenc rtpenc_chain"
2018 mp3_demuxer_select="mpegaudio_parser"
2019 mp4_muxer_select="mov_muxer"
2020 mpegts_muxer_select="adts_muxer latm_muxer"
2021 mpegtsraw_demuxer_select="mpegts_demuxer"
2022 mxf_d10_muxer_select="mxf_muxer"
2023 nut_muxer_select="riffenc"
2024 nuv_demuxer_select="riffdec"
2025 ogg_demuxer_select="golomb"
2026 psp_muxer_select="mov_muxer"
2027 rtp_demuxer_select="sdp_demuxer"
2028 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2029 rtsp_demuxer_select="http_protocol rtpdec"
2030 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2031 sap_demuxer_select="sdp_demuxer"
2032 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2033 sdp_demuxer_select="rtpdec"
2034 smoothstreaming_muxer_select="ismv_muxer"
2035 spdif_muxer_select="aac_parser"
2036 tak_demuxer_select="tak_parser"
2037 tg2_muxer_select="mov_muxer"
2038 tgp_muxer_select="mov_muxer"
2039 w64_demuxer_select="wav_demuxer"
2040 wav_demuxer_select="riffdec"
2041 wav_muxer_select="riffenc"
2042 webm_muxer_select="riffenc"
2043 wtv_demuxer_select="riffdec"
2044 xmv_demuxer_select="riffdec"
2045 xwma_demuxer_select="riffdec"
2046
2047 # indevs / outdevs
2048 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2049 alsa_outdev_deps="alsa_asoundlib_h"
2050 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2051 dv1394_indev_deps="dv1394"
2052 dv1394_indev_select="dv_demuxer"
2053 fbdev_indev_deps="linux_fb_h"
2054 jack_indev_deps="jack_jack_h pthreads"
2055 libcdio_indev_deps="libcdio"
2056 libdc1394_indev_deps="libdc1394"
2057 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2058 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2059 pulse_indev_deps="libpulse"
2060 sndio_indev_deps="sndio_h"
2061 sndio_outdev_deps="sndio_h"
2062 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2063 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2064 vfwcap_indev_extralibs="-lavicap32"
2065 x11grab_indev_deps="x11grab XShmCreateImage"
2066
2067 # protocols
2068 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2069 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2070 ffrtmpcrypt_protocol_select="tcp_protocol"
2071 ffrtmphttp_protocol_deps="!librtmp_protocol"
2072 ffrtmphttp_protocol_select="http_protocol"
2073 gopher_protocol_select="network"
2074 http_protocol_select="tcp_protocol"
2075 httpproxy_protocol_select="tcp_protocol"
2076 https_protocol_select="tls_protocol"
2077 librtmp_protocol_deps="librtmp"
2078 librtmpe_protocol_deps="librtmp"
2079 librtmps_protocol_deps="librtmp"
2080 librtmpt_protocol_deps="librtmp"
2081 librtmpte_protocol_deps="librtmp"
2082 mmsh_protocol_select="http_protocol"
2083 mmst_protocol_select="network"
2084 rtmp_protocol_deps="!librtmp_protocol"
2085 rtmp_protocol_select="tcp_protocol"
2086 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2087 rtmps_protocol_deps="!librtmp_protocol"
2088 rtmps_protocol_select="tls_protocol"
2089 rtmpt_protocol_select="ffrtmphttp_protocol"
2090 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2091 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2092 rtp_protocol_select="udp_protocol"
2093 sctp_protocol_deps="struct_sctp_event_subscribe"
2094 sctp_protocol_select="network"
2095 srtp_protocol_select="rtp_protocol"
2096 tcp_protocol_select="network"
2097 tls_protocol_deps_any="openssl gnutls"
2098 tls_protocol_select="tcp_protocol"
2099 udp_protocol_select="network"
2100 unix_protocol_deps="sys_un_h"
2101 unix_protocol_select="network"
2102
2103 # filters
2104 blackframe_filter_deps="gpl"
2105 boxblur_filter_deps="gpl"
2106 bs2b_filter_deps="libbs2b"
2107 cropdetect_filter_deps="gpl"
2108 delogo_filter_deps="gpl"
2109 drawtext_filter_deps="libfreetype"
2110 frei0r_filter_deps="frei0r dlopen"
2111 frei0r_filter_extralibs='$ldl'
2112 frei0r_src_filter_deps="frei0r dlopen"
2113 frei0r_src_filter_extralibs='$ldl'
2114 hqdn3d_filter_deps="gpl"
2115 interlace_filter_deps="gpl"
2116 ocv_filter_deps="libopencv"
2117 resample_filter_deps="avresample"
2118 scale_filter_deps="swscale"
2119
2120 # examples
2121 avcodec_example_deps="avcodec avutil"
2122 filter_audio_example_deps="avfilter avutil"
2123 metadata_example_deps="avformat avutil"
2124 output_example_deps="avcodec avformat avutil swscale"
2125 transcode_aac_example_deps="avcodec avformat avresample"
2126
2127 # libraries, in linking order
2128 avcodec_deps="avutil"
2129 avdevice_deps="avformat avcodec avutil"
2130 avfilter_deps="avutil"
2131 avformat_deps="avcodec avutil"
2132 avresample_deps="avutil"
2133 swscale_deps="avutil"
2134
2135 # programs
2136 avconv_deps="avcodec avfilter avformat avresample swscale"
2137 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2138                fps_filter null_filter resample_filter scale_filter
2139                setpts_filter trim_filter"
2140 avplay_deps="avcodec avformat avresample swscale sdl"
2141 avplay_libs='$sdl_libs'
2142 avplay_select="rdft"
2143 avprobe_deps="avcodec avformat"
2144
2145 # documentation
2146 pod2man_deps="doc"
2147 texi2html_deps="doc"
2148
2149 # default parameters
2150
2151 logfile="config.log"
2152
2153 # installation paths
2154 prefix_default="/usr/local"
2155 bindir_default='${prefix}/bin'
2156 datadir_default='${prefix}/share/avconv'
2157 docdir_default='${prefix}/share/doc/libav'
2158 incdir_default='${prefix}/include'
2159 libdir_default='${prefix}/lib'
2160 mandir_default='${prefix}/share/man'
2161 shlibdir_default="$libdir_default"
2162
2163 # toolchain
2164 ar_default="ar"
2165 cc_default="gcc"
2166 host_cc_default="gcc"
2167 cp_f="cp -f"
2168 ln_s="ln -s -f"
2169 nm_default="nm -g"
2170 objformat="elf"
2171 pkg_config_default=pkg-config
2172 ranlib="ranlib"
2173 strip="strip"
2174 yasmexe="yasm"
2175
2176 nogas=":"
2177
2178 # machine
2179 arch_default=$(uname -m)
2180 cpu="generic"
2181
2182 # OS
2183 target_os_default=$(tolower $(uname -s))
2184 host_os=$target_os_default
2185
2186 # configurable options
2187 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2188
2189 enable asm
2190 enable debug
2191 enable doc
2192 enable optimizations
2193 enable safe_bitstream_reader
2194 enable static
2195 enable swscale_alpha
2196
2197 # By default, enable only those hwaccels that have no external dependencies.
2198 enable dxva2 vdpau
2199
2200 # build settings
2201 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2202 LIBPREF="lib"
2203 LIBSUF=".a"
2204 FULLNAME='$(NAME)$(BUILDSUF)'
2205 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2206 SLIBPREF="lib"
2207 SLIBSUF=".so"
2208 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2209 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2210 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2211 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2212 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2213 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2214
2215 asflags_filter=echo
2216 cflags_filter=echo
2217 ldflags_filter=echo
2218
2219 AS_C='-c'
2220 AS_O='-o $@'
2221 CC_C='-c'
2222 CC_E='-E -o $@'
2223 CC_O='-o $@'
2224 LD_O='-o $@'
2225 LD_LIB='-l%'
2226 LD_PATH='-L'
2227 HOSTCC_C='-c'
2228 HOSTCC_E='-E -o $@'
2229 HOSTCC_O='-o $@'
2230 HOSTLD_O='-o $@'
2231
2232 host_libs='-lm'
2233 host_cflags_filter=echo
2234 host_ldflags_filter=echo
2235
2236 target_path='$(CURDIR)'
2237
2238 # since the object filename is not given with the -MM flag, the compiler
2239 # is only able to print the basename, and we must add the path ourselves
2240 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2241 DEPFLAGS='-MM'
2242
2243 # find source path
2244 if test -f configure; then
2245     source_path=.
2246 else
2247     source_path=$(cd $(dirname "$0"); pwd)
2248     echo "$source_path" | grep -q '[[:blank:]]' &&
2249         die "Out of tree builds are impossible with whitespace in source path."
2250     test -e "$source_path/config.h" &&
2251         die "Out of tree builds are impossible with config.h in source dir."
2252 fi
2253
2254 for v in "$@"; do
2255     r=${v#*=}
2256     l=${v%"$r"}
2257     r=$(sh_quote "$r")
2258     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2259 done
2260
2261 find_things(){
2262     thing=$1
2263     pattern=$2
2264     file=$source_path/$3
2265     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2266 }
2267
2268 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2269 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2270 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2271 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2272 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2273 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2274 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2275 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2276 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2277 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2278 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2279
2280 ALL_COMPONENTS="
2281     $BSF_LIST
2282     $DECODER_LIST
2283     $DEMUXER_LIST
2284     $ENCODER_LIST
2285     $FILTER_LIST
2286     $HWACCEL_LIST
2287     $INDEV_LIST
2288     $MUXER_LIST
2289     $OUTDEV_LIST
2290     $PARSER_LIST
2291     $PROTOCOL_LIST
2292 "
2293
2294 for n in $COMPONENT_LIST; do
2295     v=$(toupper ${n%s})_LIST
2296     eval enable \$$v
2297     eval ${n}_if_any="\$$v"
2298 done
2299
2300 enable $ARCH_EXT_LIST
2301
2302 die_unknown(){
2303     echo "Unknown option \"$1\"."
2304     echo "See $0 --help for available options."
2305     exit 1
2306 }
2307
2308 print_3_columns() {
2309     cat | tr ' ' '\n' | sort | pr -r -3 -t
2310 }
2311
2312 show_list() {
2313     suffix=_$1
2314     shift
2315     echo $* | sed s/$suffix//g | print_3_columns
2316     exit 0
2317 }
2318
2319 rand_list(){
2320     IFS=', '
2321     set -- $*
2322     unset IFS
2323     for thing; do
2324         comp=${thing%:*}
2325         prob=${thing#$comp}
2326         prob=${prob#:}
2327         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2328         echo "prob ${prob:-0.5}"
2329         printf '%s\n' $comp
2330     done
2331 }
2332
2333 do_random(){
2334     action=$1
2335     shift
2336     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2337     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2338 }
2339
2340 for opt do
2341     optval="${opt#*=}"
2342     case "$opt" in
2343         --extra-ldflags=*)
2344             add_ldflags $optval
2345         ;;
2346         --extra-libs=*)
2347             add_extralibs $optval
2348         ;;
2349         --disable-devices)
2350             disable $INDEV_LIST $OUTDEV_LIST
2351         ;;
2352         --enable-debug=*)
2353             debuglevel="$optval"
2354         ;;
2355         --disable-programs)
2356             disable $PROGRAM_LIST
2357         ;;
2358         --disable-everything)
2359             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2360         ;;
2361         --disable-all)
2362             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2363             disable $LIBRARY_LIST $PROGRAM_LIST doc
2364         ;;
2365         --enable-random|--disable-random)
2366             action=${opt%%-random}
2367             do_random ${action#--} $COMPONENT_LIST
2368         ;;
2369         --enable-random=*|--disable-random=*)
2370             action=${opt%%-random=*}
2371             do_random ${action#--} $optval
2372         ;;
2373         --enable-*=*|--disable-*=*)
2374             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2375             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2376             eval list=\$$(toupper $thing)_LIST
2377             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2378             $action $(filter "$name" $list)
2379         ;;
2380         --enable-avserver|--disable-avserver*)
2381             warn "avserver has been removed, the ${opt} option is only"\
2382                  "provided for compatibility and will be removed in the future"
2383         ;;
2384         --enable-?*|--disable-?*)
2385             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2386             if is_in $option $COMPONENT_LIST; then
2387                 test $action = disable && action=unset
2388                 eval $action \$$(toupper ${option%s})_LIST
2389             elif is_in $option $CMDLINE_SELECT; then
2390                 $action $option
2391             else
2392                 die_unknown $opt
2393             fi
2394         ;;
2395         --list-*)
2396             NAME="${opt#--list-}"
2397             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2398             NAME=${NAME%s}
2399             eval show_list $NAME \$$(toupper $NAME)_LIST
2400         ;;
2401         --help|-h) show_help
2402         ;;
2403         *)
2404             optname="${opt%%=*}"
2405             optname="${optname#--}"
2406             optname=$(echo "$optname" | sed 's/-/_/g')
2407             if is_in $optname $CMDLINE_SET; then
2408                 eval $optname='$optval'
2409             elif is_in $optname $CMDLINE_APPEND; then
2410                 append $optname "$optval"
2411             else
2412                 die_unknown $opt
2413             fi
2414         ;;
2415     esac
2416 done
2417
2418 disabled logging && logfile=/dev/null
2419
2420 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2421 set >> $logfile
2422
2423 test -n "$cross_prefix" && enable cross_compile
2424
2425 if enabled cross_compile; then
2426     test -n "$arch" && test -n "$target_os" ||
2427         die "Must specify target arch and OS when cross-compiling"
2428 fi
2429
2430 ar_default="${cross_prefix}${ar_default}"
2431 cc_default="${cross_prefix}${cc_default}"
2432 nm_default="${cross_prefix}${nm_default}"
2433 pkg_config_default="${cross_prefix}${pkg_config_default}"
2434 ranlib="${cross_prefix}${ranlib}"
2435 strip="${cross_prefix}${strip}"
2436
2437 sysinclude_default="${sysroot}/usr/include"
2438
2439 case "$toolchain" in
2440     clang-asan)
2441         cc_default="clang"
2442         add_cflags  -fsanitize=address
2443         add_ldflags -fsanitize=address
2444     ;;
2445     clang-tsan)
2446         cc_default="clang"
2447         add_cflags  -fsanitize=thread -pie
2448         add_ldflags -fsanitize=thread -pie
2449     ;;
2450     clang-usan)
2451         cc_default="clang"
2452         add_cflags  -fsanitize=undefined -O1
2453         add_ldflags -fsanitize=undefined
2454     ;;
2455     gcc-asan)
2456         cc_default="gcc"
2457         add_cflags  -fsanitize=address
2458         add_ldflags -fsanitize=address
2459     ;;
2460     gcc-tsan)
2461         cc_default="gcc"
2462         add_cflags  -fsanitize=thread -pie -fPIC
2463         add_ldflags -fsanitize=thread -pie -fPIC
2464     ;;
2465     gcc-usan)
2466         cc_default="gcc"
2467         add_cflags  -fsanitize=undefined
2468         add_ldflags -fsanitize=undefined
2469     ;;
2470     valgrind-massif)
2471         target_exec_default="valgrind"
2472         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2473     ;;
2474     valgrind-memcheck)
2475         target_exec_default="valgrind"
2476         target_exec_args="--track-origins=yes --leak-check=full"
2477     ;;
2478     msvc)
2479         # Check whether the current MSVC version needs the C99 converter.
2480         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2481         # support enough of C99 to build libav. Default to the new
2482         # behaviour if the regexp was unable to match anything, since this
2483         # successfully parses the version number of existing supported
2484         # versions that require the converter (MSVC 2010 and 2012).
2485         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2486         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2487             cc_default="cl"
2488         else
2489             cc_default="c99wrap cl"
2490         fi
2491         ld_default="link"
2492         nm_default="dumpbin -symbols"
2493         ar_default="lib"
2494         target_os_default="win32"
2495         # Use a relative path for TMPDIR. This makes sure all the
2496         # ffconf temp files are written with a relative path, avoiding
2497         # issues with msys/win32 path conversion for MSVC parameters
2498         # such as -Fo<file> or -out:<file>.
2499         TMPDIR=.
2500     ;;
2501     icl)
2502         cc_default="icl"
2503         ld_default="xilink"
2504         nm_default="dumpbin -symbols"
2505         ar_default="xilib"
2506         target_os_default="win32"
2507         TMPDIR=.
2508     ;;
2509     gcov)
2510         add_cflags  -fprofile-arcs -ftest-coverage
2511         add_ldflags -fprofile-arcs -ftest-coverage
2512     ;;
2513     hardened)
2514         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2515         add_ldflags -Wl,-z,relro -Wl,-z,now
2516     ;;
2517     ?*)
2518         die "Unknown toolchain $toolchain"
2519     ;;
2520 esac
2521
2522 set_default arch cc pkg_config sysinclude target_exec target_os
2523 enabled cross_compile || host_cc_default=$cc
2524 set_default host_cc
2525
2526 if ! $pkg_config --version >/dev/null 2>&1; then
2527     warn "$pkg_config not found, library detection may fail."
2528     pkg_config=false
2529 fi
2530
2531 exesuf() {
2532     case $1 in
2533         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2534     esac
2535 }
2536
2537 EXESUF=$(exesuf $target_os)
2538 HOSTEXESUF=$(exesuf $host_os)
2539
2540 # set temporary file name
2541 : ${TMPDIR:=$TEMPDIR}
2542 : ${TMPDIR:=$TMP}
2543 : ${TMPDIR:=/tmp}
2544
2545 if ! check_cmd mktemp -u XXXXXX; then
2546     # simple replacement for missing mktemp
2547     # NOT SAFE FOR GENERAL USE
2548     mktemp(){
2549         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2550     }
2551 fi
2552
2553 tmpfile(){
2554     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2555         (set -C; exec > $tmp) 2>/dev/null ||
2556         die "Unable to create temporary file in $TMPDIR."
2557     append TMPFILES $tmp
2558     eval $1=$tmp
2559 }
2560
2561 trap 'rm -f -- $TMPFILES' EXIT
2562
2563 tmpfile TMPASM .asm
2564 tmpfile TMPC   .c
2565 tmpfile TMPE   $EXESUF
2566 tmpfile TMPH   .h
2567 tmpfile TMPO   .o
2568 tmpfile TMPS   .S
2569 tmpfile TMPSH  .sh
2570 tmpfile TMPV   .ver
2571
2572 unset -f mktemp
2573
2574 chmod +x $TMPE
2575
2576 # make sure we can execute files in $TMPDIR
2577 cat > $TMPSH 2>> $logfile <<EOF
2578 #! /bin/sh
2579 EOF
2580 chmod +x $TMPSH >> $logfile 2>&1
2581 if ! $TMPSH >> $logfile 2>&1; then
2582     cat <<EOF
2583 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2584 variable to another directory and make sure that it is not mounted noexec.
2585 EOF
2586     die "Sanity test failed."
2587 fi
2588
2589 ccc_flags(){
2590     for flag; do
2591         case $flag in
2592             -std=c99)           echo -c99                       ;;
2593             -mcpu=*)            echo -arch ${flag#*=}           ;;
2594             -mieee)             echo -ieee                      ;;
2595             -O*|-fast)          echo $flag                      ;;
2596             -fno-math-errno)    echo -assume nomath_errno       ;;
2597             -g)                 echo -g3                        ;;
2598             -Wall)              echo -msg_enable level2         ;;
2599             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2600             -Wl,*)              echo $flag                      ;;
2601             -f*|-W*)                                            ;;
2602             *)                  echo $flag                      ;;
2603         esac
2604    done
2605 }
2606
2607 cparser_flags(){
2608     for flag; do
2609         case $flag in
2610             -Wno-switch)             echo -Wno-switch-enum ;;
2611             -Wno-format-zero-length) ;;
2612             -Wdisabled-optimization) ;;
2613             -Wno-pointer-sign)       echo -Wno-other ;;
2614             *)                       echo $flag ;;
2615         esac
2616     done
2617 }
2618
2619 msvc_common_flags(){
2620     for flag; do
2621         case $flag in
2622             # In addition to specifying certain flags under the compiler
2623             # specific filters, they must be specified here as well or else the
2624             # generic catch all at the bottom will print the original flag.
2625             -Wall)                ;;
2626             -std=c99)             ;;
2627             # Common flags
2628             -fomit-frame-pointer) ;;
2629             -g)                   echo -Z7 ;;
2630             -fno-math-errno)      ;;
2631             -fno-common)          ;;
2632             -fno-signed-zeros)    ;;
2633             -fPIC)                ;;
2634             -mthumb)              ;;
2635             -march=*)             ;;
2636             -lz)                  echo zlib.lib ;;
2637             -lavifil32)           echo vfw32.lib ;;
2638             -lavicap32)           echo vfw32.lib user32.lib ;;
2639             -l*)                  echo ${flag#-l}.lib ;;
2640             *)                    echo $flag ;;
2641         esac
2642     done
2643 }
2644
2645 msvc_flags(){
2646     msvc_common_flags "$@"
2647     for flag; do
2648         case $flag in
2649             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2650                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2651                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2652                                        -wd4273 ;;
2653         esac
2654     done
2655 }
2656
2657 icl_flags(){
2658     msvc_common_flags "$@"
2659     for flag; do
2660         case $flag in
2661             # Despite what Intel's documentation says -Wall, which is supported
2662             # on Windows, does enable remarks so disable them here.
2663             -Wall)                echo $flag -Qdiag-disable:remark ;;
2664             -std=c99)             echo -Qstd=c99 ;;
2665         esac
2666     done
2667 }
2668
2669 pgi_flags(){
2670     for flag; do
2671         case $flag in
2672             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2673             -fomit-frame-pointer) echo -Mnoframe ;;
2674             -g)                   echo -gopt ;;
2675             *)                    echo $flag ;;
2676         esac
2677     done
2678 }
2679
2680 suncc_flags(){
2681     for flag; do
2682         case $flag in
2683             -march=*|-mcpu=*)
2684                 case "${flag#*=}" in
2685                     native)                   echo -xtarget=native       ;;
2686                     v9|niagara)               echo -xarch=sparc          ;;
2687                     ultrasparc)               echo -xarch=sparcvis       ;;
2688                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2689                     i586|pentium)             echo -xchip=pentium        ;;
2690                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2691                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2692                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2693                     pentium4*)          echo -xtarget=pentium4           ;;
2694                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2695                     *-sse3)             echo -xarch=sse3                 ;;
2696                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2697                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2698                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2699                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2700                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2701                     k8|opteron|athlon64|athlon-fx)
2702                                                echo -xarch=sse2a         ;;
2703                     athlon*)                   echo -xarch=pentium_proa  ;;
2704                 esac
2705                 ;;
2706             -std=c99)             echo -xc99              ;;
2707             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2708             -fPIC)                echo -KPIC -xcode=pic32 ;;
2709             -W*,*)                echo $flag              ;;
2710             -f*-*|-W*|-mimpure-text)                      ;;
2711             -shared)              echo -G                 ;;
2712             *)                    echo $flag              ;;
2713         esac
2714     done
2715 }
2716
2717 tms470_flags(){
2718     for flag; do
2719         case $flag in
2720             -march=*|-mcpu=*)
2721                 case "${flag#*=}" in
2722                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2723                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2724                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2725                     armv6*|arm11*)          echo -mv=6   ;;
2726                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2727                                             echo -mv=5e  ;;
2728                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2729                 esac
2730                 ;;
2731             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2732             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2733             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2734             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2735             -msoft-float)   echo --float_support=vfplib       ;;
2736             -O[0-3]|-mf=*)  echo $flag                        ;;
2737             -g)             echo -g -mn                       ;;
2738             -pds=*)         echo $flag                        ;;
2739             -D*|-I*)        echo $flag                        ;;
2740             --gcc|--abi=*)  echo $flag                        ;;
2741             -me)            echo $flag                        ;;
2742         esac
2743     done
2744 }
2745
2746 probe_cc(){
2747     pfx=$1
2748     _cc=$2
2749
2750     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2751     unset _ld_o _ldflags _ld_lib _ld_path
2752     unset _depflags _DEPCMD _DEPFLAGS
2753     _flags_filter=echo
2754
2755     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2756         _type=llvm_gcc
2757         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2758         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2759         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2760         _cflags_speed='-O3'
2761         _cflags_size='-Os'
2762     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2763         _type=gcc
2764         gcc_version=$($_cc --version | head -n1)
2765         gcc_basever=$($_cc -dumpversion)
2766         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2767         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2768         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2769         if ! $_cc -dumpversion | grep -q '^2\.'; then
2770             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2771         fi
2772         _cflags_speed='-O3'
2773         _cflags_size='-Os'
2774     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2775         _type=icc
2776         _ident=$($_cc --version | head -n1)
2777         _depflags='-MMD'
2778         _cflags_speed='-O3'
2779         _cflags_size='-Os'
2780         _cflags_noopt='-O1'
2781     elif $_cc -v 2>&1 | grep -q xlc; then
2782         _type=xlc
2783         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2784         _cflags_speed='-O5'
2785         _cflags_size='-O5 -qcompact'
2786     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2787         _type=ccc
2788         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2789         _DEPFLAGS='-M'
2790         _cflags_speed='-fast'
2791         _cflags_size='-O1'
2792         _flags_filter=ccc_flags
2793     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2794         test -d "$sysroot" || die "No valid sysroot specified."
2795         _type=armcc
2796         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
2797         armcc_conf="$PWD/armcc.conf"
2798         $_cc --arm_linux_configure                 \
2799              --arm_linux_config_file="$armcc_conf" \
2800              --configure_sysroot="$sysroot"        \
2801              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2802              die "Error creating armcc configuration file."
2803         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2804         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2805         as_default="${cross_prefix}gcc"
2806         _depflags='-MMD'
2807         _cflags_speed='-O3'
2808         _cflags_size='-Os'
2809     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2810         _type=tms470
2811         _ident=$($_cc -version | head -n1 | tr -s ' ')
2812         _flags='--gcc --abi=eabi -me'
2813         _cc_e='-ppl -fe=$@'
2814         _cc_o='-fe=$@'
2815         _depflags='-ppa -ppd=$(@:.o=.d)'
2816         _cflags_speed='-O3 -mf=5'
2817         _cflags_size='-O3 -mf=2'
2818         _flags_filter=tms470_flags
2819     elif $_cc -v 2>&1 | grep -q clang; then
2820         _type=clang
2821         _ident=$($_cc --version | head -n1)
2822         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2823         _cflags_speed='-O3'
2824         _cflags_size='-Os'
2825     elif $_cc -V 2>&1 | grep -q Sun; then
2826         _type=suncc
2827         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2828         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2829         _DEPFLAGS='-xM1 -xc99'
2830         _ldflags='-std=c99'
2831         _cflags_speed='-O5'
2832         _cflags_size='-O5 -xspace'
2833         _flags_filter=suncc_flags
2834     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2835         _type=pathscale
2836         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2837         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2838         _cflags_speed='-O2'
2839         _cflags_size='-Os'
2840         _flags_filter='filter_out -Wdisabled-optimization'
2841     elif $_cc -v 2>&1 | grep -q Open64; then
2842         _type=open64
2843         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2844         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2845         _cflags_speed='-O2'
2846         _cflags_size='-Os'
2847         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2848     elif $_cc -V 2>&1 | grep -q Portland; then
2849         _type=pgi
2850         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2851         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2852         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2853         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2854         _cflags_noopt="-O1"
2855         _flags_filter=pgi_flags
2856     elif $_cc 2>&1 | grep -q Microsoft; then
2857         _type=msvc
2858         _ident=$($cc 2>&1 | head -n1)
2859         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2860         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2861         _cflags_speed="-O2"
2862         _cflags_size="-O1"
2863         if $_cc 2>&1 | grep -q Linker; then
2864             _ld_o='-out:$@'
2865         else
2866             _ld_o='-Fe$@'
2867         fi
2868         _cc_o='-Fo$@'
2869         _cc_e='-P -Fi$@'
2870         _flags_filter=msvc_flags
2871         _ld_lib='lib%.a'
2872         _ld_path='-libpath:'
2873         _flags='-nologo'
2874         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2875         if [ $pfx = hostcc ]; then
2876             append _cflags -Dsnprintf=_snprintf
2877         fi
2878     elif $_cc 2>&1 | grep -q Intel; then
2879         _type=icl
2880         _ident=$($cc 2>&1 | head -n1)
2881         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2882         # Not only is O3 broken on 13.x+ but it is slower on all previous
2883         # versions (tested) as well.
2884         _cflags_speed="-O2"
2885         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2886         if $_cc 2>&1 | grep -q Linker; then
2887             _ld_o='-out:$@'
2888         else
2889             _ld_o='-Fe$@'
2890         fi
2891         _cc_o='-Fo$@'
2892         _cc_e='-P'
2893         _flags_filter=icl_flags
2894         _ld_lib='lib%.a'
2895         _ld_path='-libpath:'
2896         # -Qdiag-error to make icl error when seeing certain unknown arguments
2897         _flags='-nologo -Qdiag-error:4044,10157'
2898         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2899         # with MSVC which enables it by default.
2900         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2901         if [ $pfx = hostcc ]; then
2902             append _cflags -Dsnprintf=_snprintf
2903         fi
2904     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2905         _type=cparser
2906         _ident=$($_cc --version | head -n1)
2907         _depflags='-MMD'
2908         _cflags_speed='-O4'
2909         _cflags_size='-O2'
2910         _flags_filter=cparser_flags
2911     fi
2912
2913     eval ${pfx}_type=\$_type
2914     eval ${pfx}_ident=\$_ident
2915 }
2916
2917 set_ccvars(){
2918     eval ${1}_C=\${_cc_c-\${${1}_C}}
2919     eval ${1}_E=\${_cc_e-\${${1}_E}}
2920     eval ${1}_O=\${_cc_o-\${${1}_O}}
2921
2922     if [ -n "$_depflags" ]; then
2923         eval ${1}_DEPFLAGS=\$_depflags
2924     else
2925         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2926         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2927         eval DEP${1}FLAGS=\$_flags
2928     fi
2929 }
2930
2931 probe_cc cc "$cc"
2932 cflags_filter=$_flags_filter
2933 cflags_speed=$_cflags_speed
2934 cflags_size=$_cflags_size
2935 cflags_noopt=$_cflags_noopt
2936 add_cflags $_flags $_cflags
2937 cc_ldflags=$_ldflags
2938 set_ccvars CC
2939
2940 probe_cc hostcc "$host_cc"
2941 host_cflags_filter=$_flags_filter
2942 add_host_cflags  $_flags $_cflags
2943 set_ccvars HOSTCC
2944
2945 test -n "$cc_type" && enable $cc_type ||
2946     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2947
2948 : ${as_default:=$cc}
2949 : ${dep_cc_default:=$cc}
2950 : ${ld_default:=$cc}
2951 : ${host_ld_default:=$host_cc}
2952 set_default ar as dep_cc ld host_ld
2953
2954 probe_cc as "$as"
2955 asflags_filter=$_flags_filter
2956 add_asflags $_flags $_cflags
2957 set_ccvars AS
2958
2959 probe_cc ld "$ld"
2960 ldflags_filter=$_flags_filter
2961 add_ldflags $_flags $_ldflags
2962 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2963 LD_O=${_ld_o-$LD_O}
2964 LD_LIB=${_ld_lib-$LD_LIB}
2965 LD_PATH=${_ld_path-$LD_PATH}
2966
2967 probe_cc hostld "$host_ld"
2968 host_ldflags_filter=$_flags_filter
2969 add_host_ldflags $_flags $_ldflags
2970 HOSTLD_O=${_ld_o-$HOSTLD_O}
2971
2972 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2973     probe_cc depcc "$dep_cc"
2974     CCDEP=${_DEPCMD:-$DEPCMD}
2975     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2976     DEPCCFLAGS=$_flags
2977 fi
2978
2979 if $ar 2>&1 | grep -q Microsoft; then
2980     arflags="-nologo"
2981     ar_o='-out:$@'
2982 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2983     arflags="rq"
2984     ar_o='$@'
2985 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
2986     arflags='-Xany -r -c'
2987     ar_o='$@'
2988 else
2989     arflags="rc"
2990     ar_o='$@'
2991 fi
2992
2993 add_cflags $extra_cflags
2994 add_asflags $extra_cflags
2995
2996 if test -n "$sysroot"; then
2997     case "$cc_type" in
2998         gcc|llvm_gcc|clang)
2999             add_cppflags --sysroot="$sysroot"
3000             add_ldflags --sysroot="$sysroot"
3001         ;;
3002         tms470)
3003             add_cppflags -I"$sysinclude"
3004             add_ldflags  --sysroot="$sysroot"
3005         ;;
3006     esac
3007 fi
3008
3009 if test "$cpu" = host; then
3010     enabled cross_compile &&
3011         die "--cpu=host makes no sense when cross-compiling."
3012
3013     case "$cc_type" in
3014         gcc|llvm_gcc)
3015             check_native(){
3016                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3017                 sed -n "/cc1.*$1=/{
3018                             s/.*$1=\\([^ ]*\\).*/\\1/
3019                             p
3020                             q
3021                         }" $TMPE
3022             }
3023             cpu=$(check_native -march || check_native -mcpu)
3024         ;;
3025     esac
3026
3027     test "${cpu:-host}" = host &&
3028         die "--cpu=host not supported with compiler $cc"
3029 fi
3030
3031 # Deal with common $arch aliases
3032 case "$arch" in
3033     aarch64|arm64)
3034         arch="aarch64"
3035     ;;
3036     arm*)
3037         arch="arm"
3038     ;;
3039     mips*|IP*)
3040         arch="mips"
3041     ;;
3042     parisc*|hppa*)
3043         arch="parisc"
3044     ;;
3045     "Power Macintosh"|ppc*|powerpc*)
3046         arch="ppc"
3047     ;;
3048     s390|s390x)
3049         arch="s390"
3050     ;;
3051     sh4|sh)
3052         arch="sh4"
3053     ;;
3054     sun4u|sparc*)
3055         arch="sparc"
3056     ;;
3057     tilegx|tile-gx)
3058         arch="tilegx"
3059     ;;
3060     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3061         arch="x86"
3062     ;;
3063 esac
3064
3065 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3066 enable $arch
3067
3068 # Add processor-specific flags
3069 if enabled aarch64; then
3070
3071     case $cpu in
3072         armv*)
3073             cpuflags="-march=$cpu"
3074         ;;
3075         *)
3076             cpuflags="-mcpu=$cpu"
3077         ;;
3078     esac
3079
3080 elif enabled alpha; then
3081
3082     cpuflags="-mcpu=$cpu"
3083
3084 elif enabled arm; then
3085
3086     check_arm_arch() {
3087         check_cpp_condition stddef.h \
3088             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3089             $cpuflags
3090     }
3091
3092     probe_arm_arch() {
3093         if   check_arm_arch 4;        then echo armv4;
3094         elif check_arm_arch 4T;       then echo armv4t;
3095         elif check_arm_arch 5;        then echo armv5;
3096         elif check_arm_arch 5E;       then echo armv5e;
3097         elif check_arm_arch 5T;       then echo armv5t;
3098         elif check_arm_arch 5TE;      then echo armv5te;
3099         elif check_arm_arch 5TEJ;     then echo armv5te;
3100         elif check_arm_arch 6;        then echo armv6;
3101         elif check_arm_arch 6J;       then echo armv6j;
3102         elif check_arm_arch 6K;       then echo armv6k;
3103         elif check_arm_arch 6Z;       then echo armv6z;
3104         elif check_arm_arch 6ZK;      then echo armv6zk;
3105         elif check_arm_arch 6T2;      then echo armv6t2;
3106         elif check_arm_arch 7;        then echo armv7;
3107         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3108         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3109         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3110         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3111         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3112         fi
3113     }
3114
3115     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3116
3117     case $cpu in
3118         armv*)
3119             cpuflags="-march=$cpu"
3120             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3121         ;;
3122         *)
3123             cpuflags="-mcpu=$cpu"
3124             case $cpu in
3125                 cortex-a*)                               subarch=armv7a  ;;
3126                 cortex-r*)                               subarch=armv7r  ;;
3127                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3128                 arm11*)                                  subarch=armv6   ;;
3129                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3130                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3131                 *)                             subarch=$(probe_arm_arch) ;;
3132             esac
3133         ;;
3134     esac
3135
3136     case "$subarch" in
3137         armv5t*)    enable fast_clz                ;;
3138         armv[6-8]*) enable fast_clz fast_unaligned ;;
3139     esac
3140
3141 elif enabled avr32; then
3142
3143     case $cpu in
3144         ap7[02]0[0-2])
3145             subarch="avr32_ap"
3146             cpuflags="-mpart=$cpu"
3147         ;;
3148         ap)
3149             subarch="avr32_ap"
3150             cpuflags="-march=$cpu"
3151         ;;
3152         uc3[ab]*)
3153             subarch="avr32_uc"
3154             cpuflags="-mcpu=$cpu"
3155         ;;
3156         uc)
3157             subarch="avr32_uc"
3158             cpuflags="-march=$cpu"
3159         ;;
3160     esac
3161
3162 elif enabled bfin; then
3163
3164     cpuflags="-mcpu=$cpu"
3165
3166 elif enabled mips; then
3167
3168     cpuflags="-march=$cpu"
3169
3170 elif enabled ppc; then
3171
3172     disable ldbrx
3173
3174     case $(tolower $cpu) in
3175         601|ppc601|powerpc601)
3176             cpuflags="-mcpu=601"
3177             disable altivec
3178         ;;
3179         603*|ppc603*|powerpc603*)
3180             cpuflags="-mcpu=603"
3181             disable altivec
3182         ;;
3183         604*|ppc604*|powerpc604*)
3184             cpuflags="-mcpu=604"
3185             disable altivec
3186         ;;
3187         g3|75*|ppc75*|powerpc75*)
3188             cpuflags="-mcpu=750"
3189             disable altivec
3190         ;;
3191         g4|745*|ppc745*|powerpc745*)
3192             cpuflags="-mcpu=7450"
3193         ;;
3194         74*|ppc74*|powerpc74*)
3195             cpuflags="-mcpu=7400"
3196         ;;
3197         g5|970|ppc970|powerpc970)
3198             cpuflags="-mcpu=970"
3199         ;;
3200         power[3-7]*)
3201             cpuflags="-mcpu=$cpu"
3202         ;;
3203         cell)
3204             cpuflags="-mcpu=cell"
3205             enable ldbrx
3206         ;;
3207         e500mc)
3208             cpuflags="-mcpu=e500mc"
3209             disable altivec
3210         ;;
3211         e500v2)
3212             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3213             disable altivec
3214             disable dcbzl
3215         ;;
3216         e500)
3217             cpuflags="-mcpu=8540 -mhard-float"
3218             disable altivec
3219             disable dcbzl
3220         ;;
3221     esac
3222
3223 elif enabled sparc; then
3224
3225     case $cpu in
3226         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3227             cpuflags="-mcpu=$cpu"
3228         ;;
3229         ultrasparc*|niagara[234])
3230             cpuflags="-mcpu=$cpu"
3231         ;;
3232     esac
3233
3234 elif enabled x86; then
3235
3236     case $cpu in
3237         i[345]86|pentium)
3238             cpuflags="-march=$cpu"
3239             disable mmx
3240         ;;
3241         # targets that do NOT support nopl and conditional mov (cmov)
3242         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3243             cpuflags="-march=$cpu"
3244             disable i686
3245         ;;
3246         # targets that do support nopl and conditional mov (cmov)
3247         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3248             cpuflags="-march=$cpu"
3249             enable i686
3250             enable fast_cmov
3251         ;;
3252         # targets that do support conditional mov but on which it's slow
3253         pentium4|pentium4m|prescott|nocona)
3254             cpuflags="-march=$cpu"
3255             enable i686
3256             disable fast_cmov
3257         ;;
3258     esac
3259
3260 fi
3261
3262 if [ "$cpu" != generic ]; then
3263     add_cflags  $cpuflags
3264     add_asflags $cpuflags
3265 fi
3266
3267 # compiler sanity check
3268 check_exec <<EOF
3269 int main(void){ return 0; }
3270 EOF
3271 if test "$?" != 0; then
3272     echo "$cc is unable to create an executable file."
3273     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3274         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3275         echo "Only do this if you know what cross compiling means."
3276     fi
3277     die "C compiler test failed."
3278 fi
3279
3280 add_cppflags -D_ISOC99_SOURCE
3281 check_cflags -std=c99
3282 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3283 #include <stdlib.h>
3284 EOF
3285 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3286 #include <stdlib.h>
3287 EOF
3288
3289 add_host_cppflags -D_ISOC99_SOURCE
3290 check_host_cflags -std=c99
3291 check_host_cflags -Wall
3292 check_host_cflags -O3
3293
3294 check_64bit(){
3295     arch32=$1
3296     arch64=$2
3297     expr=$3
3298     check_code cc "" "int test[2*($expr) - 1]" &&
3299         subarch=$arch64 || subarch=$arch32
3300 }
3301
3302 case "$arch" in
3303     aarch64|alpha|ia64)
3304         spic=$shared
3305     ;;
3306     mips)
3307         check_64bit mips mips64 '_MIPS_SIM > 1'
3308         spic=$shared
3309     ;;
3310     parisc)
3311         check_64bit parisc parisc64 'sizeof(void *) > 4'
3312         spic=$shared
3313     ;;
3314     ppc)
3315         check_64bit ppc ppc64 'sizeof(void *) > 4'
3316         spic=$shared
3317     ;;
3318     s390)
3319         check_64bit s390 s390x 'sizeof(void *) > 4'
3320         spic=$shared
3321     ;;
3322     sparc)
3323         check_64bit sparc sparc64 'sizeof(void *) > 4'
3324         spic=$shared
3325     ;;
3326     x86)
3327         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3328         if test "$subarch" = "x86_64"; then
3329             spic=$shared
3330         fi
3331     ;;
3332 esac
3333
3334 enable $subarch
3335 enabled spic && enable_weak pic
3336
3337 # OS specific
3338 case $target_os in
3339     aix)
3340         SHFLAGS=-shared
3341         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3342         enabled shared && add_ldflags -Wl,-brtl
3343         ;;
3344     android)
3345         disable symver
3346         SLIB_INSTALL_NAME='$(SLIBNAME)'
3347         SLIB_INSTALL_LINKS=
3348         # soname not set on purpose
3349         SHFLAGS=-shared
3350         ;;
3351     haiku)
3352         prefix_default="/boot/common"
3353         network_extralibs="-lnetwork"
3354         host_libs=
3355         ;;
3356     sunos)
3357         SHFLAGS='-shared -Wl,-h,$$(@F)'
3358         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3359         network_extralibs="-lsocket -lnsl"
3360         # When using suncc to build, the Solaris linker will mark
3361         # an executable with each instruction set encountered by
3362         # the Solaris assembler.  As our libraries contain their own
3363         # guards for processor-specific code, instead suppress
3364         # generation of the HWCAPS ELF section on Solaris x86 only.
3365         enabled_all suncc x86 &&
3366             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3367             add_ldflags -Wl,-M,mapfile
3368         nm_default='nm -P -g'
3369         ;;
3370     netbsd)
3371         disable symver
3372         oss_indev_extralibs="-lossaudio"
3373         oss_outdev_extralibs="-lossaudio"
3374         ;;
3375     openbsd|bitrig)
3376         disable symver
3377         SHFLAGS='-shared'
3378         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3379         SLIB_INSTALL_LINKS=
3380         oss_indev_extralibs="-lossaudio"
3381         oss_outdev_extralibs="-lossaudio"
3382         ;;
3383     dragonfly)
3384         disable symver
3385         ;;
3386     freebsd)
3387         ;;
3388     bsd/os)
3389         add_extralibs -lpoll -lgnugetopt
3390         ;;
3391     darwin)
3392         gas="gas-preprocessor.pl $cc"
3393         enabled ppc && add_asflags -force_cpusubtype_ALL
3394         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3395         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3396         add_ldflags -Wl,-dynamic,-search_paths_first
3397         SLIBSUF=".dylib"
3398         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3399         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3400         objformat="macho"
3401         enabled x86_64 && objformat="macho64"
3402         enabled_any pic shared ||
3403             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3404         ;;
3405     mingw32*)
3406         if test $target_os = "mingw32ce"; then
3407             disable network
3408         else
3409             target_os=mingw32
3410         fi
3411         LIBTARGET=i386
3412         if enabled x86_64; then
3413             LIBTARGET="i386:x86-64"
3414         elif enabled arm; then
3415             LIBTARGET=arm-wince
3416         fi
3417         check_ldflags -Wl,--nxcompat
3418         check_ldflags -Wl,--dynamicbase
3419         shlibdir_default="$bindir_default"
3420         SLIBPREF=""
3421         SLIBSUF=".dll"
3422         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3423         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3424         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3425         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3426         SLIB_INSTALL_LINKS=
3427         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3428         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3429         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3430         objformat="win32"
3431         dlltool="${cross_prefix}dlltool"
3432         ranlib=:
3433         enable dos_paths
3434         ;;
3435     win32|win64)
3436         disable symver
3437         if enabled shared; then
3438             # Link to the import library instead of the normal static library
3439             # for shared libs.
3440             LD_LIB='%.lib'
3441             # Cannot build both shared and static libs with MSVC or icl.
3442             disable static
3443         fi
3444         shlibdir_default="$bindir_default"
3445         SLIBPREF=""
3446         SLIBSUF=".dll"
3447         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3448         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3449         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3450         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3451         SLIB_INSTALL_LINKS=
3452         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3453         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3454         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3455         objformat="win32"
3456         ranlib=:
3457         enable dos_paths
3458         ;;
3459     cygwin*)
3460         target_os=cygwin
3461         shlibdir_default="$bindir_default"
3462         SLIBPREF="cyg"
3463         SLIBSUF=".dll"
3464         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3465         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3466         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3467         SLIB_INSTALL_LINKS=
3468         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3469         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3470         objformat="win32"
3471         enable dos_paths
3472         ;;
3473     *-dos|freedos|opendos)
3474         network_extralibs="-lsocket"
3475         objformat="coff"
3476         enable dos_paths
3477         add_cppflags -U__STRICT_ANSI__
3478         ;;
3479     linux)
3480         enable dv1394
3481         ;;
3482     irix*)
3483         target_os=irix
3484         ranlib="echo ignoring ranlib"
3485         ;;
3486     os/2*)
3487         ln_s="cp -f"
3488         objformat="aout"
3489         add_cppflags -D_GNU_SOURCE
3490         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3491         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3492         LIBSUF="_s.a"
3493         SLIBPREF=""
3494         SLIBSUF=".dll"
3495         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3496         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3497         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3498             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3499             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3500             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3501             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3502             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3503         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3504             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3505         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3506         enable dos_paths
3507         ;;
3508     gnu/kfreebsd)
3509         add_cppflags -D_BSD_SOURCE
3510         ;;
3511     gnu)
3512         ;;
3513     qnx)
3514         add_cppflags -D_QNX_SOURCE
3515         network_extralibs="-lsocket"
3516         ;;
3517     symbian)
3518         SLIBSUF=".dll"
3519         enable dos_paths
3520         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3521         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3522         add_ldflags -Wl,--target1-abs,--no-undefined \
3523                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3524                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3525         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3526                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3527                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3528         ;;
3529     osf1)
3530         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3531         ;;
3532     minix)
3533         ;;
3534     plan9)
3535         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3536                      -D_REENTRANT_SOURCE        \
3537                      -D_RESEARCH_SOURCE         \
3538                      -DFD_SETSIZE=96            \
3539                      -DHAVE_SOCK_OPTS
3540         add_compat strtod.o strtod=avpriv_strtod
3541         network_extralibs='-lbsd'
3542         exeobjs=compat/plan9/main.o
3543         cp_f='cp'
3544         ;;
3545     none)
3546         ;;
3547     *)
3548         die "Unknown OS '$target_os'."
3549         ;;
3550 esac
3551
3552 # determine libc flavour
3553
3554 probe_libc(){
3555     pfx=$1
3556     pfx_no_=${pfx%_}
3557     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3558     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3559         eval ${pfx}libc_type=uclibc
3560         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3561     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3562         eval ${pfx}libc_type=glibc
3563         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3564     # MinGW headers can be installed on Cygwin, so check for newlib first.
3565     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3566         eval ${pfx}libc_type=newlib
3567         add_${pfx}cppflags -U__STRICT_ANSI__
3568     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3569     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3570         eval ${pfx}libc_type=mingw64
3571         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3572         eval test \$${pfx_no_}cc_type = "gcc" &&
3573             add_${pfx}cppflags -D__printf__=__gnu_printf__
3574     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3575          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3576         eval ${pfx}libc_type=mingw32
3577         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3578             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3579             die "ERROR: MinGW32 runtime version must be >= 3.15."
3580         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3581         eval test \$${pfx_no_}cc_type = "gcc" &&
3582             add_${pfx}cppflags -D__printf__=__gnu_printf__
3583     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3584         eval ${pfx}libc_type=msvcrt
3585         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3586         # 0x601 by default unless something else is set by the user.
3587         # This can easily lead to us detecting functions only present
3588         # in such new versions and producing binaries requiring windows 7.0.
3589         # Therefore explicitly set the default to XP unless the user has
3590         # set something else on the command line.
3591         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3592             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3593     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3594         eval ${pfx}libc_type=klibc
3595     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3596         eval ${pfx}libc_type=bionic
3597     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3598         eval ${pfx}libc_type=solaris
3599         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3600     fi
3601 }
3602
3603 probe_libc
3604 test -n "$libc_type" && enable libc_$libc_type
3605 probe_libc host_
3606 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3607
3608 case $libc_type in
3609     bionic)
3610         add_compat strtod.o strtod=avpriv_strtod
3611         ;;
3612     msvcrt)
3613         add_compat strtod.o strtod=avpriv_strtod
3614         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3615                                      _snprintf=avpriv_snprintf  \
3616                                      vsnprintf=avpriv_vsnprintf
3617         ;;
3618 esac
3619
3620 # hacks for compiler/libc/os combinations
3621
3622 if enabled_all tms470 libc_glibc; then
3623     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3624     add_cppflags -D__USER_LABEL_PREFIX__=
3625     add_cppflags -D__builtin_memset=memset
3626     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3627     add_cflags   -pds=48    # incompatible redefinition of macro
3628 fi
3629
3630 if enabled_all ccc libc_glibc; then
3631     add_ldflags -Wl,-z,now  # calls to libots crash without this
3632 fi
3633
3634 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3635     add_cppflags '-I\$(SRC_PATH)/compat/float'
3636
3637 esc(){
3638     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3639 }
3640
3641 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3642
3643 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3644
3645 set_default $PATHS_LIST
3646 set_default nm
3647
3648 # we need to build at least one lib type
3649 if ! enabled_any static shared; then
3650     cat <<EOF
3651 At least one library type must be built.
3652 Specify --enable-static to build the static libraries or --enable-shared to
3653 build the shared libraries as well. To only build the shared libraries specify
3654 --disable-static in addition to --enable-shared.
3655 EOF
3656     exit 1;
3657 fi
3658
3659 die_license_disabled() {
3660     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3661 }
3662
3663 die_license_disabled gpl libcdio
3664 die_license_disabled gpl libx264
3665 die_license_disabled gpl libx265
3666 die_license_disabled gpl libxavs
3667 die_license_disabled gpl libxvid
3668 die_license_disabled gpl x11grab
3669
3670 die_license_disabled nonfree libfaac
3671 die_license_disabled nonfree libfdk_aac
3672 die_license_disabled nonfree openssl
3673
3674 die_license_disabled version3 libopencore_amrnb
3675 die_license_disabled version3 libopencore_amrwb
3676 die_license_disabled version3 libvo_aacenc
3677 die_license_disabled version3 libvo_amrwbenc
3678
3679 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3680
3681 disabled optimizations || check_cflags -fomit-frame-pointer
3682
3683 enable_weak_pic() {
3684     disabled pic && return
3685     enable pic
3686     add_cppflags -DPIC
3687     case "$target_os" in
3688     mingw*|cygwin*)
3689         ;;
3690     *)
3691         add_cflags -fPIC
3692         ;;
3693     esac
3694     add_asflags  -fPIC
3695 }
3696
3697 enabled pic && enable_weak_pic
3698
3699 check_cc <<EOF || die "Symbol mangling check failed."
3700 int ff_extern;
3701 EOF
3702 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3703 extern_prefix=${sym%%ff_extern*}
3704
3705 check_cc <<EOF && enable_weak inline_asm
3706 void foo(void) { __asm__ volatile ("" ::); }
3707 EOF
3708
3709 _restrict=
3710 for restrict_keyword in restrict __restrict__ __restrict; do
3711     check_cc <<EOF && _restrict=$restrict_keyword && break
3712 void foo(char * $restrict_keyword p);
3713 EOF
3714 done
3715
3716 check_cc <<EOF && enable pragma_deprecated
3717 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3718 EOF
3719
3720 check_cc <<EOF && enable attribute_packed
3721 struct { int x; } __attribute__((packed)) x;
3722 EOF
3723
3724 check_cc <<EOF && enable attribute_may_alias
3725 union { int x; } __attribute__((may_alias)) x;
3726 EOF
3727
3728 check_cc <<EOF || die "endian test failed"
3729 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3730 EOF
3731 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3732
3733
3734 if enabled asm; then
3735     enabled     arm         && nogas=die
3736     enabled_all ppc altivec && nogas=warn
3737     as=${gas:=$as}
3738     check_as <<EOF && enable gnu_as || \
3739         $nogas "GNU assembler not found, install gas-preprocessor"
3740 .macro m n
3741 \n: .int 0
3742 .endm
3743 m x
3744 EOF
3745
3746     check_as <<EOF || $nogas "GNU assembler not found, install gas-preprocessor"
3747 .altmacro
3748 EOF
3749
3750     check_as <<EOF && enable as_func
3751 .func test
3752 .endfunc
3753 EOF
3754 fi
3755
3756 check_inline_asm inline_asm_labels '"1:\n"'
3757
3758 if enabled aarch64; then
3759     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3760     # internal assembler in clang 3.3 does not support this instruction
3761     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3762     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3763
3764     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3765
3766 elif enabled alpha; then
3767
3768     check_cflags -mieee
3769
3770 elif enabled arm; then
3771
3772     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3773     enabled thumb && check_cflags -mthumb || check_cflags -marm
3774
3775     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3776         enable vfp_args
3777     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3778         case "${cross_prefix:-$cc}" in
3779             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3780             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3781 __asm__ (".eabi_attribute 28, 1");
3782 int main(void) { return 0; }
3783 EOF
3784         esac
3785         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3786     fi
3787
3788     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3789     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3790     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3791     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3792     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3793     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3794
3795     [ $target_os = linux ] ||
3796         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3797             $ARCH_EXT_LIST_ARM
3798
3799     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3800
3801     check_as <<EOF && enable as_dn_directive
3802 ra .dn d0.i16
3803 .unreq ra
3804 EOF
3805
3806     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3807
3808 elif enabled mips; then
3809
3810     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3811
3812 elif enabled parisc; then
3813
3814     if enabled gcc; then
3815         case $($cc -dumpversion) in
3816             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3817         esac
3818     fi
3819
3820 elif enabled ppc; then
3821
3822     enable local_aligned_8 local_aligned_16
3823
3824     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3825     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3826     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3827     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3828
3829     # AltiVec flags: The FSF version of GCC differs from the Apple version
3830     if enabled altivec; then
3831         check_cflags -maltivec -mabi=altivec &&
3832         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3833         check_cflags -faltivec
3834
3835         # check if our compiler supports Motorola AltiVec C API
3836         check_cc <<EOF || disable altivec
3837 $inc_altivec_h
3838 int main(void) {
3839     vector signed int v1 = (vector signed int) { 0 };
3840     vector signed int v2 = (vector signed int) { 1 };
3841     v1 = vec_add(v1, v2);
3842     return 0;
3843 }
3844 EOF
3845
3846         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3847     fi
3848
3849 elif enabled x86; then
3850
3851     check_builtin rdtsc    intrin.h   "__rdtsc()"
3852     check_builtin mm_empty mmintrin.h "_mm_empty()"
3853
3854     enable local_aligned_8 local_aligned_16
3855
3856     # check whether EBP is available on x86
3857     # As 'i' is stored on the stack, this program will crash
3858     # if the base pointer is used to access it because the
3859     # base pointer is cleared in the inline assembly code.
3860     check_exec_crash <<EOF && enable ebp_available
3861 volatile int i=0;
3862 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3863 return i;
3864 EOF
3865
3866     # check whether EBX is available on x86
3867     check_inline_asm ebx_available '""::"b"(0)' &&
3868         check_inline_asm ebx_available '"":::"%ebx"'
3869
3870     # check whether xmm clobbers are supported
3871     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3872
3873     # check whether binutils is new enough to compile SSSE3/MMXEXT
3874     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3875     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3876
3877     if ! disabled_any asm mmx yasm; then
3878         if check_cmd $yasmexe --version; then
3879             enabled x86_64 && yasm_extra="-m amd64"
3880             yasm_debug="-g dwarf2"
3881         elif check_cmd nasm -v; then
3882             yasmexe=nasm
3883             yasm_debug="-g -F dwarf"
3884             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3885         fi
3886
3887         YASMFLAGS="-f $objformat $yasm_extra"
3888         enabled pic               && append YASMFLAGS "-DPIC"
3889         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3890         case "$objformat" in
3891             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3892         esac
3893
3894         check_yasm "movbe ecx, [5]" && enable yasm ||
3895             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3896         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
3897         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
3898         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3899         check_yasm "CPU amdnop" || disable cpunop
3900     fi
3901
3902     case "$cpu" in
3903         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3904             disable fast_clz
3905         ;;
3906     esac
3907
3908 fi
3909
3910 check_ldflags -Wl,--as-needed
3911
3912 if check_func dlopen; then
3913     ldl=
3914 elif check_func dlopen -ldl; then
3915     ldl=-ldl
3916 fi
3917
3918 if ! disabled network; then
3919     check_func getaddrinfo $network_extralibs
3920     check_func getservbyport $network_extralibs
3921     check_func inet_aton $network_extralibs
3922
3923     check_type netdb.h "struct addrinfo"
3924     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3925     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3926     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3927     check_type poll.h "struct pollfd"
3928     check_type netinet/sctp.h "struct sctp_event_subscribe"
3929     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3930     check_type netinet/in.h "struct sockaddr_in6"
3931     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3932     check_type "sys/types.h sys/socket.h" socklen_t
3933
3934     # Prefer arpa/inet.h over winsock2
3935     if check_header arpa/inet.h ; then
3936         check_func closesocket
3937     elif check_header winsock2.h ; then
3938         check_func_headers winsock2.h closesocket -lws2 &&
3939             network_extralibs="-lws2" ||
3940         { check_func_headers winsock2.h closesocket -lws2_32 &&
3941             network_extralibs="-lws2_32"; } || disable winsock2_h network
3942         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3943
3944         check_type ws2tcpip.h socklen_t
3945         check_type ws2tcpip.h "struct addrinfo"
3946         check_type ws2tcpip.h "struct group_source_req"
3947         check_type ws2tcpip.h "struct ip_mreq_source"
3948         check_type ws2tcpip.h "struct ipv6_mreq"
3949         check_type winsock2.h "struct pollfd"
3950         check_struct winsock2.h "struct sockaddr" sa_len
3951         check_type ws2tcpip.h "struct sockaddr_in6"
3952         check_type ws2tcpip.h "struct sockaddr_storage"
3953     else
3954         disable network
3955     fi
3956 fi
3957
3958 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3959 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3960 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3961 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3962
3963 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3964 check_func  ${malloc_prefix}memalign            && enable memalign
3965 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3966
3967 check_func  fcntl
3968 check_func  fork
3969 check_func  gethrtime
3970 check_func  getopt
3971 check_func  getrusage
3972 check_func  gettimeofday
3973 check_func  isatty
3974 check_func  localtime_r
3975 check_func  mach_absolute_time
3976 check_func  mkstemp
3977 check_func  mmap
3978 check_func  mprotect
3979 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3980 check_func  nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3981 check_func  sched_getaffinity
3982 check_func  setrlimit
3983 check_func  strerror_r
3984 check_func  strptime
3985 check_func  sysconf
3986 check_func  sysctl
3987 check_func  usleep
3988
3989 check_func_headers io.h setmode
3990 check_func_headers stdlib.h getenv
3991
3992 check_func_headers windows.h CoTaskMemFree -lole32
3993 check_func_headers windows.h GetProcessAffinityMask
3994 check_func_headers windows.h GetProcessTimes
3995 check_func_headers windows.h GetSystemTimeAsFileTime
3996 check_func_headers windows.h MapViewOfFile
3997 check_func_headers windows.h SetConsoleTextAttribute
3998 check_func_headers windows.h Sleep
3999 check_func_headers windows.h VirtualAlloc
4000
4001 check_header direct.h
4002 check_header dlfcn.h
4003 check_header dxva.h
4004 check_header dxva2api.h
4005 check_header io.h
4006 check_header mach/mach_time.h
4007 check_header malloc.h
4008 check_header poll.h
4009 check_header sys/mman.h
4010 check_header sys/param.h
4011 check_header sys/resource.h
4012 check_header sys/select.h
4013 check_header sys/time.h
4014 check_header sys/un.h
4015 check_header unistd.h
4016 check_header vdpau/vdpau.h
4017 check_header vdpau/vdpau_x11.h
4018 check_header VideoDecodeAcceleration/VDADecoder.h
4019 check_header windows.h
4020 check_header X11/extensions/XvMClib.h
4021
4022 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4023 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4024 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4025
4026 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4027
4028 if ! disabled w32threads && ! enabled pthreads; then
4029     check_func_headers "windows.h process.h" _beginthreadex &&
4030         enable w32threads || disable w32threads
4031 fi
4032
4033 # check for some common methods of building with pthread support
4034 # do this before the optional library checks as some of them require pthreads
4035 if ! disabled pthreads && ! enabled w32threads; then
4036     enable pthreads
4037     if check_func pthread_join -pthread; then
4038         add_cflags -pthread
4039         add_extralibs -pthread
4040     elif check_func pthread_join -pthreads; then
4041         add_cflags -pthreads
4042         add_extralibs -pthreads
4043     elif check_func pthread_join -lpthreadGC2; then
4044         add_extralibs -lpthreadGC2
4045     elif check_lib pthread.h pthread_join -lpthread; then
4046         :
4047     elif ! check_func pthread_join; then
4048         disable pthreads
4049     fi
4050 fi
4051
4052 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4053 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4054
4055 check_lib math.h sin -lm && LIBM="-lm"
4056 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4057
4058 atan2f_args=2
4059 ldexpf_args=2
4060 powf_args=2
4061
4062 for func in $MATH_FUNCS; do
4063     eval check_mathfunc $func \${${func}_args:-1}
4064 done
4065
4066 # these are off by default, so fail if requested and not available
4067 enabled avisynth          && { { check_header "avisynth/avisynth_c.h" && check_lib2 "windows.h" LoadLibrary; } ||
4068                                { check_header "avxsynth/avxsynth_c.h" && check_lib2 "dlfcn.h" dlopen -ldl; } ||
4069                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4070 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4071 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4072 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4073 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4074 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4075 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4076 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4077 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4078                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4079                                done || die "ERROR: libgsm not found"; }
4080 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4081 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4082 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4083 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4084 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4085 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4086                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4087 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4088 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4089 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4090 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4091 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4092 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4093 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4094 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4095 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4096 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4097 enabled libvpx            && {
4098     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4099                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4100     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VPX_CQ" -lvpx ||
4101                                     die "ERROR: libvpx encoder version must be >=0.9.6"; }
4102     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4103     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4104 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4105 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4106 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4107                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4108                                die "ERROR: libx264 version must be >= 0.118."; }
4109 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4110                              { check_cpp_condition x265.h "X265_BUILD >= 17" ||
4111                                die "ERROR: libx265 version must be >= 17."; }
4112 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4113 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4114 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4115                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4116                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4117                                die "ERROR: openssl not found"; }
4118
4119 if enabled gnutls; then
4120     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4121     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4122 fi
4123
4124 # libdc1394 check
4125 if enabled libdc1394; then
4126     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4127         enable libdc1394_2; } ||
4128     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4129         enable libdc1394_1; } ||
4130     die "ERROR: No version of libdc1394 found "
4131 fi
4132
4133 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4134     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4135     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4136     enable sdl
4137 fi
4138
4139 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4140 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4141
4142 check_header linux/fb.h
4143 check_header linux/videodev2.h
4144 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4145
4146 check_header sys/videoio.h
4147
4148 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4149 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4150 # w32api 3.12 had it defined wrong
4151 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4152
4153 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4154 { check_header dev/bktr/ioctl_meteor.h &&
4155   check_header dev/bktr/ioctl_bt848.h; } ||
4156 { check_header machine/ioctl_meteor.h &&
4157   check_header machine/ioctl_bt848.h; } ||
4158 { check_header dev/video/meteor/ioctl_meteor.h &&
4159   check_header dev/video/bktr/ioctl_bt848.h; } ||
4160 check_header dev/ic/bt8xx.h
4161
4162 check_header sndio.h
4163 check_header sys/soundcard.h
4164 check_header soundcard.h
4165
4166 enabled_any alsa_indev alsa_outdev &&
4167     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4168
4169 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4170     check_func jack_port_get_latency_range -ljack
4171
4172 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4173
4174 if enabled libcdio; then
4175     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4176     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio
4177 fi
4178
4179 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4180
4181 enabled x11grab                                           &&
4182 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4183 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes &&
4184 { enabled xlib || die "ERROR: Xlib not found"; }
4185
4186 enabled vdpau &&
4187     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4188     disable vdpau
4189
4190 enabled vdpau && enabled xlib &&
4191     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4192     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4193     enable vdpau_x11
4194
4195 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4196
4197 # add some useful compiler flags if supported
4198 check_cflags -Wdeclaration-after-statement
4199 check_cflags -Wall
4200 check_cflags -Wdisabled-optimization
4201 check_cflags -Wpointer-arith
4202 check_cflags -Wredundant-decls
4203 check_cflags -Wcast-qual
4204 check_cflags -Wwrite-strings
4205 check_cflags -Wtype-limits
4206 check_cflags -Wundef
4207 check_cflags -Wmissing-prototypes
4208 check_cflags -Wstrict-prototypes
4209 enabled extra_warnings && check_cflags -Winline
4210
4211 check_disable_warning(){
4212     warning_flag=-W${1#-Wno-}
4213     test_cflags $warning_flag && add_cflags $1
4214 }
4215
4216 check_disable_warning -Wno-parentheses
4217 check_disable_warning -Wno-switch
4218 check_disable_warning -Wno-format-zero-length
4219 check_disable_warning -Wno-pointer-sign
4220
4221 # add some linker flags
4222 check_ldflags -Wl,--warn-common
4223 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4224 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4225
4226 # add some strip flags
4227 # -wN '..@*' is more selective than -x, but not available everywhere.
4228 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4229
4230 enabled neon_clobber_test &&
4231     check_ldflags -Wl,--wrap,avcodec_open2              \
4232                   -Wl,--wrap,avcodec_decode_audio4      \
4233                   -Wl,--wrap,avcodec_decode_video2      \
4234                   -Wl,--wrap,avcodec_decode_subtitle2   \
4235                   -Wl,--wrap,avcodec_encode_audio2      \
4236                   -Wl,--wrap,avcodec_encode_video2      \
4237                   -Wl,--wrap,avcodec_encode_subtitle    \
4238                   -Wl,--wrap,avresample_convert ||
4239     disable neon_clobber_test
4240
4241 enabled xmm_clobber_test &&
4242     check_ldflags -Wl,--wrap,avcodec_open2              \
4243                   -Wl,--wrap,avcodec_decode_audio4      \
4244                   -Wl,--wrap,avcodec_decode_video2      \
4245                   -Wl,--wrap,avcodec_decode_subtitle2   \
4246                   -Wl,--wrap,avcodec_encode_audio2      \
4247                   -Wl,--wrap,avcodec_encode_video2      \
4248                   -Wl,--wrap,avcodec_encode_subtitle    \
4249                   -Wl,--wrap,avresample_convert         \
4250                   -Wl,--wrap,sws_scale ||
4251     disable xmm_clobber_test
4252
4253 echo "X{};" > $TMPV
4254 if test_ldflags -Wl,--version-script,$TMPV; then
4255     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4256     check_cc <<EOF && enable symver_asm_label
4257 void ff_foo(void) __asm__ ("av_foo@VERSION");
4258 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4259 EOF
4260     check_cc <<EOF && enable symver_gnu_asm
4261 __asm__(".symver ff_foo,av_foo@VERSION");
4262 void ff_foo(void) {}
4263 EOF
4264 fi
4265
4266 if [ -z "$optflags" ]; then
4267     if enabled small; then
4268         optflags=$cflags_size
4269     elif enabled optimizations; then
4270         optflags=$cflags_speed
4271     else
4272         optflags=$cflags_noopt
4273     fi
4274 fi
4275
4276 check_optflags(){
4277     check_cflags "$@"
4278     enabled lto && check_ldflags "$@"
4279 }
4280
4281
4282 if enabled lto; then
4283     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4284     check_cflags  -flto
4285     check_ldflags -flto $cpuflags
4286 fi
4287
4288 check_optflags $optflags
4289 check_optflags -fno-math-errno
4290 check_optflags -fno-signed-zeros
4291
4292 if enabled icc; then
4293     # Just warnings, no remarks
4294     check_cflags -w1
4295     # -wd: Disable following warnings
4296     # 144, 167, 556: -Wno-pointer-sign
4297     # 1292: attribute "foo" ignored
4298     # 1419: external declaration in primary source file
4299     # 10006: ignoring unknown option -fno-signed-zeros
4300     # 10148: ignoring unknown option -Wno-parentheses
4301     # 10156: ignoring option '-W'; no argument required
4302     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4303     # 11030: Warning unknown option --as-needed
4304     # 10156: ignoring option '-export'; no argument required
4305     check_ldflags -wd10156,11030
4306     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4307     enable ebp_available
4308     if enabled x86_32; then
4309         icc_version=$($cc -dumpversion)
4310         test ${icc_version%%.*} -ge 11 &&
4311             check_cflags -falign-stack=maintain-16-byte ||
4312             disable aligned_stack
4313     fi
4314 elif enabled ccc; then
4315     # disable some annoying warnings
4316     add_cflags -msg_disable bitnotint
4317     add_cflags -msg_disable mixfuncvoid
4318     add_cflags -msg_disable nonstandcast
4319     add_cflags -msg_disable unsupieee
4320 elif enabled gcc; then
4321     check_optflags -fno-tree-vectorize
4322     check_cflags -Werror=implicit-function-declaration
4323     check_cflags -Werror=missing-prototypes
4324     check_cflags -Werror=return-type
4325     check_cflags -Werror=declaration-after-statement
4326     check_cflags -Werror=vla
4327     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4328 elif enabled llvm_gcc; then
4329     check_cflags -mllvm -stack-alignment=16
4330 elif enabled clang; then
4331     check_cflags -mllvm -stack-alignment=16
4332     check_cflags -Qunused-arguments
4333     check_cflags -Werror=implicit-function-declaration
4334     check_cflags -Werror=missing-prototypes
4335     check_cflags -Werror=return-type
4336 elif enabled cparser; then
4337     add_cflags -Wno-missing-variable-declarations
4338     add_cflags -Wno-empty-statement
4339 elif enabled armcc; then
4340     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
4341     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
4342     # 2523: use of inline assembler is deprecated
4343     add_cflags -W${armcc_opt},--diag_suppress=2523
4344     add_cflags -W${armcc_opt},--diag_suppress=1207
4345     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4346     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4347     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4348     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4349 elif enabled tms470; then
4350     add_cflags -pds=824 -pds=837
4351     disable inline_asm
4352 elif enabled pathscale; then
4353     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4354 elif enabled_any msvc icl; then
4355     enabled x86_32 && disable aligned_stack
4356     enabled_all x86_32 debug && add_cflags -Oy-
4357     enabled debug && add_ldflags -debug
4358     enable pragma_deprecated
4359     if enabled icl; then
4360         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4361         # (correctly) on icl 13.x.
4362         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4363             add_cflags -Qansi-alias
4364         # icl will pass the inline asm tests but inline asm is currently
4365         # not supported (build will fail)
4366         disable inline_asm
4367     fi
4368 fi
4369
4370 case $as_type in
4371     clang)
4372         add_asflags -Qunused-arguments
4373     ;;
4374 esac
4375
4376 case $ld_type in
4377     clang)
4378         check_ldflags -Qunused-arguments
4379     ;;
4380 esac
4381
4382 case $target_os in
4383     osf1)
4384         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4385     ;;
4386     plan9)
4387         add_cppflags -Dmain=plan9_main
4388     ;;
4389 esac
4390
4391 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4392
4393 check_deps $CONFIG_LIST       \
4394            $CONFIG_EXTRA      \
4395            $HAVE_LIST         \
4396            $ALL_COMPONENTS    \
4397
4398 enabled_all dxva2 CoTaskMemFree &&
4399     prepend avconv_libs $($ldflags_filter "-lole32") &&
4400     enable dxva2_lib
4401
4402 ! enabled_any memalign posix_memalign aligned_malloc &&
4403     enabled_any $need_memalign && enable memalign_hack
4404
4405 for thread in $THREADS_LIST; do
4406     if enabled $thread; then
4407         test -n "$thread_type" &&
4408             die "ERROR: Only one thread type must be selected." ||
4409             thread_type="$thread"
4410     fi
4411 done
4412
4413 # conditional library dependencies, in linking order
4414 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
4415 enabled resample_filter && prepend avfilter_deps "avresample"
4416 enabled scale_filter    && prepend avfilter_deps "swscale"
4417
4418 enabled opus_decoder    && prepend avcodec_deps "avresample"
4419
4420 expand_deps(){
4421     lib_deps=${1}_deps
4422     eval "deps=\$$lib_deps"
4423     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
4424     unique $lib_deps
4425 }
4426
4427 map 'expand_deps $v' $LIBRARY_LIST
4428
4429 echo "install prefix            $prefix"
4430 echo "source path               $source_path"
4431 echo "C compiler                $cc"
4432 echo "C library                 $libc_type"
4433 if test "$host_cc" != "$cc"; then
4434     echo "host C compiler           $host_cc"
4435     echo "host C library            $host_libc_type"
4436 fi
4437 echo "ARCH                      $arch ($cpu)"
4438 if test "$build_suffix" != ""; then
4439     echo "build suffix              $build_suffix"
4440 fi
4441 if test "$extra_version" != ""; then
4442     echo "version string suffix     $extra_version"
4443 fi
4444 echo "big-endian                ${bigendian-no}"
4445 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4446 if enabled x86; then
4447     echo "${yasmexe}                      ${yasm-no}"
4448     echo "MMX enabled               ${mmx-no}"
4449     echo "MMXEXT enabled            ${mmxext-no}"
4450     echo "3DNow! enabled            ${amd3dnow-no}"
4451     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4452     echo "SSE enabled               ${sse-no}"
4453     echo "SSSE3 enabled             ${ssse3-no}"
4454     echo "AVX enabled               ${avx-no}"
4455     echo "XOP enabled               ${xop-no}"
4456     echo "FMA3 enabled              ${fma3-no}"
4457     echo "FMA4 enabled              ${fma4-no}"
4458     echo "i686 features enabled     ${i686-no}"
4459     echo "CMOV is fast              ${fast_cmov-no}"
4460     echo "EBX available             ${ebx_available-no}"
4461     echo "EBP available             ${ebp_available-no}"
4462 fi
4463 if enabled aarch64; then
4464     echo "NEON enabled              ${neon-no}"
4465     echo "VFP enabled               ${vfp-no}"
4466 fi
4467 if enabled arm; then
4468     echo "ARMv5TE enabled           ${armv5te-no}"
4469     echo "ARMv6 enabled             ${armv6-no}"
4470     echo "ARMv6T2 enabled           ${armv6t2-no}"
4471     echo "VFP enabled               ${vfp-no}"
4472     echo "NEON enabled              ${neon-no}"
4473 fi
4474 if enabled ppc; then
4475     echo "AltiVec enabled           ${altivec-no}"
4476     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4477     echo "dcbzl available           ${dcbzl-no}"
4478 fi
4479 echo "debug symbols             ${debug-no}"
4480 echo "optimize for size         ${small-no}"
4481 echo "optimizations             ${optimizations-no}"
4482 echo "static                    ${static-no}"
4483 echo "shared                    ${shared-no}"
4484 echo "new filter support        ${avfilter-no}"
4485 echo "network support           ${network-no}"
4486 echo "threading support         ${thread_type-no}"
4487 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4488 echo "SDL support               ${sdl-no}"
4489 test -n "$random_seed" &&
4490     echo "random seed               ${random_seed}"
4491 echo
4492
4493 echo "External libraries:"
4494 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4495 echo
4496
4497 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4498     echo "Enabled ${type}s:"
4499     eval list=\$$(toupper $type)_LIST
4500     print_enabled '_*' $list | print_3_columns
4501     echo
4502 done
4503
4504 license="LGPL version 2.1 or later"
4505 if enabled nonfree; then
4506     license="nonfree and unredistributable"
4507 elif enabled gplv3; then
4508     license="GPL version 3 or later"
4509 elif enabled lgplv3; then
4510     license="LGPL version 3 or later"
4511 elif enabled gpl; then
4512     license="GPL version 2 or later"
4513 fi
4514
4515 echo "License: $license"
4516
4517 echo "Creating config.mak and config.h..."
4518
4519 test -e Makefile || echo "include $source_path/Makefile" > Makefile
4520
4521 config_files="$TMPH config.mak"
4522
4523 cat > config.mak <<EOF
4524 # Automatically generated by configure - do not modify!
4525 LIBAV_CONFIGURATION=$LIBAV_CONFIGURATION
4526 prefix=$prefix
4527 LIBDIR=\$(DESTDIR)$libdir
4528 SHLIBDIR=\$(DESTDIR)$shlibdir
4529 INCDIR=\$(DESTDIR)$incdir
4530 BINDIR=\$(DESTDIR)$bindir
4531 DATADIR=\$(DESTDIR)$datadir
4532 DOCDIR=\$(DESTDIR)$docdir
4533 MANDIR=\$(DESTDIR)$mandir
4534 SRC_PATH=$source_path
4535 CC_IDENT=$cc_ident
4536 ARCH=$arch
4537 CC=$cc
4538 AS=$as
4539 LD=$ld
4540 DEPCC=$dep_cc
4541 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4542 DEPAS=$as
4543 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4544 YASM=$yasmexe
4545 DEPYASM=$yasmexe
4546 AR=$ar
4547 ARFLAGS=$arflags
4548 AR_O=$ar_o
4549 RANLIB=$ranlib
4550 STRIP=$strip
4551 LN_S=$ln_s
4552 CPPFLAGS=$CPPFLAGS
4553 CFLAGS=$CFLAGS
4554 ASFLAGS=$ASFLAGS
4555 AS_C=$AS_C
4556 AS_O=$AS_O
4557 CC_C=$CC_C
4558 CC_E=$CC_E
4559 CC_O=$CC_O
4560 LD_O=$LD_O
4561 LD_LIB=$LD_LIB
4562 LD_PATH=$LD_PATH
4563 DLLTOOL=$dlltool
4564 LDFLAGS=$LDFLAGS
4565 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4566 STRIPFLAGS=$STRIPFLAGS
4567 YASMFLAGS=$YASMFLAGS
4568 BUILDSUF=$build_suffix
4569 FULLNAME=$FULLNAME
4570 LIBPREF=$LIBPREF
4571 LIBSUF=$LIBSUF
4572 LIBNAME=$LIBNAME
4573 SLIBPREF=$SLIBPREF
4574 SLIBSUF=$SLIBSUF
4575 EXESUF=$EXESUF
4576 EXTRA_VERSION=$extra_version
4577 CCDEP=$CCDEP
4578 CCDEP_FLAGS=$CCDEP_FLAGS
4579 ASDEP=$ASDEP
4580 ASDEP_FLAGS=$ASDEP_FLAGS
4581 CC_DEPFLAGS=$CC_DEPFLAGS
4582 AS_DEPFLAGS=$AS_DEPFLAGS
4583 HOSTCC=$host_cc
4584 HOSTLD=$host_ld
4585 HOSTCFLAGS=$host_cflags
4586 HOSTCPPFLAGS=$host_cppflags
4587 HOSTEXESUF=$HOSTEXESUF
4588 HOSTLDFLAGS=$host_ldflags
4589 HOSTLIBS=$host_libs
4590 DEPHOSTCC=$host_cc
4591 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4592 HOSTCCDEP=$HOSTCCDEP
4593 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4594 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4595 HOSTCC_C=$HOSTCC_C
4596 HOSTCC_O=$HOSTCC_O
4597 HOSTLD_O=$HOSTLD_O
4598 TARGET_EXEC=$target_exec $target_exec_args
4599 TARGET_PATH=$target_path
4600 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4601 CFLAGS-avplay=$sdl_cflags
4602 ZLIB=$($ldflags_filter -lz)
4603 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4604 EXTRALIBS=$extralibs
4605 COMPAT_OBJS=$compat_objs
4606 EXEOBJS=$exeobjs
4607 INSTALL=install
4608 LIBTARGET=${LIBTARGET}
4609 SLIBNAME=${SLIBNAME}
4610 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4611 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4612 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4613 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4614 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4615 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4616 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4617 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4618 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
4619 EOF
4620
4621 get_version(){
4622     lcname=lib${1}
4623     name=$(toupper $lcname)
4624     file=$source_path/$lcname/version.h
4625     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4626     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4627     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4628     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4629     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4630 }
4631
4632 map 'get_version $v' $LIBRARY_LIST
4633
4634 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> config.mak' $LIBRARY_LIST
4635
4636 print_program_libs(){
4637     eval "program_libs=\$${1}_libs"
4638     eval echo "LIBS-${1}=${program_libs}" >> config.mak
4639 }
4640
4641 map 'print_program_libs $v' $PROGRAM_LIST
4642
4643 cat > $TMPH <<EOF
4644 /* Automatically generated by configure - do not modify! */
4645 #ifndef LIBAV_CONFIG_H
4646 #define LIBAV_CONFIG_H
4647 #define LIBAV_CONFIGURATION "$(c_escape $LIBAV_CONFIGURATION)"
4648 #define LIBAV_LICENSE "$(c_escape $license)"
4649 #define AVCONV_DATADIR "$(eval c_escape $datadir)"
4650 #define CC_IDENT "$(c_escape ${cc_ident:-Unknown compiler})"
4651 #define restrict $_restrict
4652 #define EXTERN_PREFIX "${extern_prefix}"
4653 #define EXTERN_ASM ${extern_prefix}
4654 #define SLIBSUF "$SLIBSUF"
4655 EOF
4656
4657 test -n "$malloc_prefix" &&
4658     echo "#define MALLOC_PREFIX $malloc_prefix" >>$TMPH
4659
4660 if enabled yasm; then
4661     append config_files $TMPASM
4662     printf '' >$TMPASM
4663 fi
4664
4665 enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
4666
4667 print_config ARCH_   "$config_files" $ARCH_LIST
4668 print_config HAVE_   "$config_files" $HAVE_LIST
4669 print_config CONFIG_ "$config_files" $CONFIG_LIST       \
4670                                      $CONFIG_EXTRA      \
4671                                      $ALL_COMPONENTS    \
4672
4673 echo "#endif /* LIBAV_CONFIG_H */" >> $TMPH
4674
4675 # Do not overwrite an unchanged config.h to avoid superfluous rebuilds.
4676 cp_if_changed $TMPH config.h
4677 touch .config
4678
4679 enabled yasm && cp_if_changed $TMPASM config.asm
4680
4681 cat > $TMPH <<EOF
4682 /* Generated by ffconf */
4683 #ifndef AVUTIL_AVCONFIG_H
4684 #define AVUTIL_AVCONFIG_H
4685 EOF
4686
4687 print_config AV_HAVE_ $TMPH $HAVE_LIST_PUB
4688
4689 echo "#endif /* AVUTIL_AVCONFIG_H */" >> $TMPH
4690
4691 cp_if_changed $TMPH libavutil/avconfig.h
4692
4693 test -n "$WARNINGS" && printf "\n$WARNINGS"
4694
4695 # build pkg-config files
4696
4697 lib_version(){
4698     eval printf "\"lib${1} >= \$LIB$(toupper ${1})_VERSION, \""
4699 }
4700
4701 pkgconfig_generate(){
4702     name=$1
4703     shortname=${name#lib}${build_suffix}
4704     comment=$2
4705     version=$3
4706     libs=$4
4707     requires=$(map 'lib_version $v' $(eval echo \$${name#lib}_deps))
4708     requires=${requires%, }
4709     enabled ${name#lib} || return 0
4710     mkdir -p $name
4711     cat <<EOF > $name/$name.pc
4712 prefix=$prefix
4713 exec_prefix=\${prefix}
4714 libdir=$libdir
4715 includedir=$incdir
4716
4717 Name: $name
4718 Description: $comment
4719 Version: $version
4720 Requires: $(enabled shared || echo $requires)
4721 Requires.private: $(enabled shared && echo $requires)
4722 Conflicts:
4723 Libs: -L\${libdir} -l${shortname} $(enabled shared || echo $libs)
4724 Libs.private: $(enabled shared && echo $libs)
4725 Cflags: -I\${includedir}
4726 EOF
4727     cat <<EOF > $name/$name-uninstalled.pc
4728 prefix=
4729 exec_prefix=
4730 libdir=\${pcfiledir}
4731 includedir=${source_path}
4732
4733 Name: $name
4734 Description: $comment
4735 Version: $version
4736 Requires: $requires
4737 Conflicts:
4738 Libs: \${libdir}/${LIBPREF}${shortname}${LIBSUF} $libs
4739 Cflags: -I\${includedir}
4740 EOF
4741 }
4742
4743 pkgconfig_generate libavutil     "Libav utility library"          "$LIBAVUTIL_VERSION"     "$LIBM"
4744 pkgconfig_generate libavcodec    "Libav codec library"            "$LIBAVCODEC_VERSION"    "$extralibs"
4745 pkgconfig_generate libavformat   "Libav container format library" "$LIBAVFORMAT_VERSION"   "$extralibs"
4746 pkgconfig_generate libavdevice   "Libav device handling library"  "$LIBAVDEVICE_VERSION"   "$extralibs"
4747 pkgconfig_generate libavfilter   "Libav video filtering library"  "$LIBAVFILTER_VERSION"   "$extralibs"
4748 pkgconfig_generate libavresample "Libav audio resampling library" "$LIBAVRESAMPLE_VERSION" "$extralibs"
4749 pkgconfig_generate libswscale    "Libav image rescaling library"  "$LIBSWSCALE_VERSION"    "$LIBM"