Hap decoder and encoder
[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   --enable-rpath           use rpath when linking programs [USE WITH CARE]
90
91 Licensing options:
92   --enable-gpl             allow use of GPL code, the resulting libs
93                            and binaries will be under GPL [no]
94   --enable-version3        upgrade (L)GPL to version 3 [no]
95   --enable-nonfree         allow use of nonfree code, the resulting libs
96                            and binaries will be unredistributable [no]
97
98 Configuration options:
99   --disable-static         do not build static libraries [no]
100   --enable-shared          build shared libraries [no]
101   --enable-small           optimize for size instead of speed
102   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
103   --enable-gray            enable full grayscale support (slower color)
104   --disable-swscale-alpha  disable alpha channel support in swscale
105   --disable-all            disable building components, libraries and programs
106
107 Program options:
108   --disable-programs       do not build command line programs
109   --disable-avconv         disable avconv build
110   --disable-avplay         disable avplay build
111   --disable-avprobe        disable avprobe build
112   --disable-avserver       deprecated, does nothing
113
114 Component options:
115   --disable-doc            do not build documentation
116   --disable-avdevice       disable libavdevice build
117   --disable-avcodec        disable libavcodec build
118   --disable-avformat       disable libavformat build
119   --disable-avutil         disable libavutil build
120   --disable-swscale        disable libswscale build
121   --disable-avfilter       disable video filter support [no]
122   --disable-avresample     disable libavresample build [no]
123   --disable-pthreads       disable pthreads [auto]
124   --disable-w32threads     disable Win32 threads [auto]
125   --disable-network        disable network support [no]
126   --disable-dct            disable DCT code
127   --disable-error-resilience disable error resilience code
128   --disable-lsp            disable LSP code
129   --disable-lzo            disable LZO decoder code
130   --disable-mdct           disable MDCT code
131   --disable-rdft           disable RDFT code
132   --disable-fft            disable FFT code
133   --disable-faan           disable floating point AAN (I)DCT code
134
135 Hardware accelerators:
136   --enable-d3d11va         enable D3D11VA code
137   --enable-dxva2           enable DXVA2 code
138   --enable-vaapi           enable VAAPI code
139   --enable-vda             enable VDA code
140   --enable-vdpau           enable VDPAU code
141
142 Individual component options:
143   --disable-everything     disable all components listed below
144   --disable-encoder=NAME   disable encoder NAME
145   --enable-encoder=NAME    enable encoder NAME
146   --disable-encoders       disable all encoders
147   --disable-decoder=NAME   disable decoder NAME
148   --enable-decoder=NAME    enable decoder NAME
149   --disable-decoders       disable all decoders
150   --disable-hwaccel=NAME   disable hwaccel NAME
151   --enable-hwaccel=NAME    enable hwaccel NAME
152   --disable-hwaccels       disable all hwaccels
153   --disable-muxer=NAME     disable muxer NAME
154   --enable-muxer=NAME      enable muxer NAME
155   --disable-muxers         disable all muxers
156   --disable-demuxer=NAME   disable demuxer NAME
157   --enable-demuxer=NAME    enable demuxer NAME
158   --disable-demuxers       disable all demuxers
159   --enable-parser=NAME     enable parser NAME
160   --disable-parser=NAME    disable parser NAME
161   --disable-parsers        disable all parsers
162   --enable-bsf=NAME        enable bitstream filter NAME
163   --disable-bsf=NAME       disable bitstream filter NAME
164   --disable-bsfs           disable all bitstream filters
165   --enable-protocol=NAME   enable protocol NAME
166   --disable-protocol=NAME  disable protocol NAME
167   --disable-protocols      disable all protocols
168   --enable-indev=NAME      enable input device NAME
169   --disable-indev=NAME     disable input device NAME
170   --disable-indevs         disable input devices
171   --enable-outdev=NAME     enable output device NAME
172   --disable-outdev=NAME    disable output device NAME
173   --disable-outdevs        disable output devices
174   --disable-devices        disable all devices
175   --enable-filter=NAME     enable filter NAME
176   --disable-filter=NAME    disable filter NAME
177   --disable-filters        disable all filters
178
179 External library support:
180   --enable-avisynth        enable reading of AviSynth script files [no]
181   --enable-bzlib           enable bzlib [autodetect]
182   --enable-frei0r          enable frei0r video filtering
183   --enable-gnutls          enable gnutls [no]
184   --enable-libbs2b         enable bs2b DSP library [no]
185   --enable-libcdio         enable audio CD grabbing with libcdio
186   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
187                            and libraw1394 [no]
188   --enable-libdcadec       enable DCA decoding via libdcadec [no]
189   --enable-libfaac         enable AAC encoding via libfaac [no]
190   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
191   --enable-libfreetype     enable libfreetype [no]
192   --enable-libgsm          enable GSM de/encoding via libgsm [no]
193   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
194   --enable-libmfx          enable HW acceleration through libmfx
195   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
196   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
197   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
198   --enable-libopencv       enable video filtering via libopencv [no]
199   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
200   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
201   --enable-libopus         enable Opus de/encoding via libopus [no]
202   --enable-libpulse        enable Pulseaudio input via libpulse [no]
203   --enable-librtmp         enable RTMP[E] support via librtmp [no]
204   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
205   --enable-libsnappy       enable Snappy compression [no]
206   --enable-libspeex        enable Speex de/encoding via libspeex [no]
207   --enable-libtheora       enable Theora encoding via libtheora [no]
208   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
209   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
210   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
211   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
212   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
213   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
214   --enable-libwebp         enable WebP encoding via libwebp [no]
215   --enable-libx264         enable H.264 encoding via x264 [no]
216   --enable-libx265         enable HEVC encoding via x265 [no]
217   --enable-libxavs         enable AVS encoding via xavs [no]
218   --enable-libxcb          enable X11 grabbing using XCB [no]
219   --enable-libxcb-shm      enable X11 grabbing shm communication [auto]
220   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [auto]
221   --enable-libxvid         enable Xvid encoding via xvidcore,
222                            native MPEG-4/Xvid encoder exists [no]
223   --enable-mmal            enable decoding via MMAL [no]
224   --enable-nvenc           enable encoding via NVENC [no]
225   --enable-openssl         enable openssl [no]
226   --enable-x11grab         enable X11 grabbing (legacy) [no]
227   --enable-zlib            enable zlib [autodetect]
228
229 Toolchain options:
230   --arch=ARCH              select architecture [$arch]
231   --cpu=CPU                select the minimum required CPU (affects
232                            instruction selection, may crash on older CPUs)
233   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
234   --enable-cross-compile   assume a cross-compiler is used
235   --sysroot=PATH           root of cross-build tree
236   --sysinclude=PATH        location of cross-build system headers
237   --target-os=OS           compiler targets OS [$target_os]
238   --target-exec=CMD        command to run executables on target
239   --target-path=DIR        path to view of build directory on target
240   --target-samples=DIR     path to samples directory on target
241   --toolchain=NAME         set tool defaults according to NAME
242   --nm=NM                  use nm tool
243   --ar=AR                  use archive tool AR [$ar_default]
244   --as=AS                  use assembler AS [$as_default]
245   --cc=CC                  use C compiler CC [$cc_default]
246   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
247   --ld=LD                  use linker LD
248   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
249   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
250   --host-cc=HOSTCC         use host C compiler HOSTCC
251   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
252   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
253   --host-ld=HOSTLD         use host linker HOSTLD
254   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
255   --host-libs=HLIBS        use libs HLIBS when linking for host
256   --host-os=OS             compiler host OS [$target_os]
257   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
258   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
259   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
260   --extra-libs=ELIBS       add ELIBS [$ELIBS]
261   --extra-version=STRING   version string suffix []
262   --optflags=OPTFLAGS      override optimization-related compiler flags
263   --build-suffix=SUFFIX    library name suffix []
264   --enable-pic             build position-independent code
265   --enable-thumb           compile for Thumb instruction set
266   --enable-lto             use link-time optimization
267   --env="ENV=override"     override the environment variables
268
269 Advanced options (experts only):
270   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
271   --disable-symver         disable symbol versioning
272   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
273   --disable-safe-bitstream-reader
274                            disable buffer boundary checking in bitreaders
275                            (faster, but may crash)
276   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
277   --enable-sram            allow use of on-chip SRAM
278
279 Optimization options (experts only):
280   --disable-asm            disable all assembly optimizations
281   --disable-altivec        disable AltiVec optimizations
282   --disable-vsx            disable VSX optimizations
283   --disable-power8         disable POWER8 optimizations
284   --disable-amd3dnow       disable 3DNow! optimizations
285   --disable-amd3dnowext    disable 3DNow! extended optimizations
286   --disable-mmx            disable MMX optimizations
287   --disable-mmxext         disable MMXEXT optimizations
288   --disable-sse            disable SSE optimizations
289   --disable-sse2           disable SSE2 optimizations
290   --disable-sse3           disable SSE3 optimizations
291   --disable-ssse3          disable SSSE3 optimizations
292   --disable-sse4           disable SSE4 optimizations
293   --disable-sse42          disable SSE4.2 optimizations
294   --disable-avx            disable AVX optimizations
295   --disable-xop            disable XOP optimizations
296   --disable-fma3           disable FMA3 optimizations
297   --disable-fma4           disable FMA4 optimizations
298   --disable-avx2           disable AVX2 optimizations
299   --disable-armv5te        disable armv5te optimizations
300   --disable-armv6          disable armv6 optimizations
301   --disable-armv6t2        disable armv6t2 optimizations
302   --disable-vfp            disable VFP optimizations
303   --disable-neon           disable NEON optimizations
304   --disable-inline-asm     disable use of inline assembly
305   --disable-yasm           disable use of nasm/yasm assembly
306
307 Developer options (useful when working on Libav itself):
308   --disable-debug          disable debugging symbols
309   --enable-debug=LEVEL     set the debug level [$debuglevel]
310   --disable-optimizations  disable compiler optimizations
311   --enable-extra-warnings  enable more compiler warnings
312   --samples=PATH           location of test samples for FATE, if not set use
313                            \$LIBAV_SAMPLES at make invocation time.
314   --enable-neon-clobber-test check NEON registers for clobbering (should be
315                            used only for debugging purposes)
316   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
317                            should be used only for debugging purposes)
318   --enable-random          randomly enable/disable components
319   --disable-random
320   --enable-random=LIST     randomly enable/disable specific components or
321   --disable-random=LIST    component groups. LIST is a comma-separated list
322                            of NAME[:PROB] entries where NAME is a component
323                            (group) and PROB the probability associated with
324                            NAME (default 0.5).
325   --random-seed=VALUE      seed value for --enable/disable-random
326   --disable-valgrind-backtrace do not print a backtrace under Valgrind
327                            (only applies to --disable-optimizations builds)
328
329 NOTE: Object files are built at the place where configure is launched.
330 EOF
331   exit 0
332 }
333
334 quotes='""'
335
336 log(){
337     echo "$@" >> $logfile
338 }
339
340 log_file(){
341     log BEGIN $1
342     pr -n -t $1 >> $logfile
343     log END $1
344 }
345
346 echolog(){
347     log "$@"
348     echo "$@"
349 }
350
351 warn(){
352     log "WARNING: $*"
353     WARNINGS="${WARNINGS}WARNING: $*\n"
354 }
355
356 die(){
357     echolog "$@"
358     cat <<EOF
359
360 If you think configure made a mistake, make sure you are using the latest
361 version from Git.  If the latest version fails, report the problem to the
362 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
363 EOF
364     if disabled logging; then
365         cat <<EOF
366 Rerun configure with logging enabled (do not use --disable-logging), and
367 include the log this produces with your report.
368 EOF
369     else
370         cat <<EOF
371 Include the log file "$logfile" produced by configure as this will help
372 solving the problem.
373 EOF
374     fi
375     exit 1
376 }
377
378 # Avoid locale weirdness, besides we really just want to translate ASCII.
379 toupper(){
380     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
381 }
382
383 tolower(){
384     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
385 }
386
387 c_escape(){
388     echo "$*" | sed 's/["\\]/\\\0/g'
389 }
390
391 sh_quote(){
392     v=$(echo "$1" | sed "s/'/'\\\\''/g")
393     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
394     echo "$v"
395 }
396
397 cleanws(){
398     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
399 }
400
401 filter(){
402     pat=$1
403     shift
404     for v; do
405         eval "case $v in $pat) echo $v ;; esac"
406     done
407 }
408
409 filter_out(){
410     pat=$1
411     shift
412     for v; do
413         eval "case $v in $pat) ;; *) echo $v ;; esac"
414     done
415 }
416
417 map(){
418     m=$1
419     shift
420     for v; do eval $m; done
421 }
422
423 add_suffix(){
424     suffix=$1
425     shift
426     for v; do echo ${v}${suffix}; done
427 }
428
429 set_all(){
430     value=$1
431     shift
432     for var in $*; do
433         eval $var=$value
434     done
435 }
436
437 set_weak(){
438     value=$1
439     shift
440     for var; do
441         eval : \${$var:=$value}
442     done
443 }
444
445 sanitize_var_name(){
446     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
447 }
448
449 set_safe(){
450     var=$1
451     shift
452     eval $(sanitize_var_name "$var")='$*'
453 }
454
455 get_safe(){
456     eval echo \$$(sanitize_var_name "$1")
457 }
458
459 pushvar(){
460     for pvar in $*; do
461         eval level=\${${pvar}_level:=0}
462         eval ${pvar}_${level}="\$$pvar"
463         eval ${pvar}_level=$(($level+1))
464     done
465 }
466
467 popvar(){
468     for pvar in $*; do
469         eval level=\${${pvar}_level:-0}
470         test $level = 0 && continue
471         eval level=$(($level-1))
472         eval $pvar="\${${pvar}_${level}}"
473         eval ${pvar}_level=$level
474         eval unset ${pvar}_${level}
475     done
476 }
477
478 enable(){
479     set_all yes $*
480 }
481
482 disable(){
483     set_all no $*
484 }
485
486 enable_weak(){
487     set_weak yes $*
488 }
489
490 disable_weak(){
491     set_weak no $*
492 }
493
494 enable_safe(){
495     for var; do
496         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
497     done
498 }
499
500 disable_safe(){
501     for var; do
502         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
503     done
504 }
505
506 do_enable_deep(){
507     for var; do
508         enabled $var && continue
509         eval sel="\$${var}_select"
510         eval sgs="\$${var}_suggest"
511         pushvar var sgs
512         enable_deep $sel
513         popvar sgs
514         enable_deep_weak $sgs
515         popvar var
516     done
517 }
518
519 enable_deep(){
520     do_enable_deep $*
521     enable $*
522 }
523
524 enable_deep_weak(){
525     for var; do
526         disabled $var && continue
527         pushvar var
528         do_enable_deep $var
529         popvar var
530         enable_weak $var
531     done
532 }
533
534 enabled(){
535     test "${1#!}" = "$1" && op== || op=!=
536     eval test "x\$${1#!}" $op "xyes"
537 }
538
539 disabled(){
540     test "${1#!}" = "$1" && op== || op=!=
541     eval test "x\$${1#!}" $op "xno"
542 }
543
544 enabled_all(){
545     for opt; do
546         enabled $opt || return 1
547     done
548 }
549
550 disabled_all(){
551     for opt; do
552         disabled $opt || return 1
553     done
554 }
555
556 enabled_any(){
557     for opt; do
558         enabled $opt && return 0
559     done
560 }
561
562 disabled_any(){
563     for opt; do
564         disabled $opt && return 0
565     done
566     return 1
567 }
568
569 set_default(){
570     for opt; do
571         eval : \${$opt:=\$${opt}_default}
572     done
573 }
574
575 is_in(){
576     value=$1
577     shift
578     for var in $*; do
579         [ $var = $value ] && return 0
580     done
581     return 1
582 }
583
584 do_check_deps(){
585     for cfg; do
586         cfg="${cfg#!}"
587         enabled ${cfg}_checking && die "Circular dependency for $cfg."
588         disabled ${cfg}_checking && continue
589         enable ${cfg}_checking
590         append allopts $cfg
591
592         eval dep_all="\$${cfg}_deps"
593         eval dep_any="\$${cfg}_deps_any"
594         eval dep_sel="\$${cfg}_select"
595         eval dep_sgs="\$${cfg}_suggest"
596         eval dep_ifa="\$${cfg}_if"
597         eval dep_ifn="\$${cfg}_if_any"
598
599         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
600         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
601         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
602
603         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
604         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
605         enabled_all  $dep_all || disable $cfg
606         enabled_any  $dep_any || disable $cfg
607         disabled_any $dep_sel && disable $cfg
608
609         if enabled $cfg; then
610             enable_deep $dep_sel
611             enable_deep_weak $dep_sgs
612         fi
613
614         disable ${cfg}_checking
615     done
616 }
617
618 check_deps(){
619     unset allopts
620
621     do_check_deps "$@"
622
623     for cfg in $allopts; do
624         enabled $cfg || continue
625         eval dep_extralibs="\$${cfg}_extralibs"
626         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
627     done
628 }
629
630 print_config(){
631     pfx=$1
632     files=$2
633     shift 2
634     map 'eval echo "$v \${$v:-no}"' "$@" |
635     awk "BEGIN { split(\"$files\", files) }
636         {
637             c = \"$pfx\" toupper(\$1);
638             v = \$2;
639             sub(/yes/, 1, v);
640             sub(/no/,  0, v);
641             for (f in files) {
642                 file = files[f];
643                 if (file ~ /\\.h\$/) {
644                     printf(\"#define %s %d\\n\", c, v) >>file;
645                 } else if (file ~ /\\.asm\$/) {
646                     printf(\"%%define %s %d\\n\", c, v) >>file;
647                 } else if (file ~ /\\.mak\$/) {
648                     n = -v ? \"\" : \"!\";
649                     printf(\"%s%s=yes\\n\", n, c) >>file;
650                 }
651             }
652         }"
653 }
654
655 print_enabled(){
656     suf=$1
657     shift
658     for v; do
659         enabled $v && printf "%s\n" ${v%$suf};
660     done
661 }
662
663 append(){
664     var=$1
665     shift
666     eval "$var=\"\$$var $*\""
667 }
668
669 prepend(){
670     var=$1
671     shift
672     eval "$var=\"$* \$$var\""
673 }
674
675 unique(){
676     var=$1
677     uniq_list=""
678     for tok in $(eval echo \$$var); do
679         uniq_list="$(filter_out $tok $uniq_list) $tok"
680     done
681     eval "$var=\"${uniq_list}\""
682 }
683
684 add_cppflags(){
685     append CPPFLAGS "$@"
686 }
687
688 add_cflags(){
689     append CFLAGS $($cflags_filter "$@")
690 }
691
692 add_asflags(){
693     append ASFLAGS $($asflags_filter "$@")
694 }
695
696 add_ldflags(){
697     append LDFLAGS $($ldflags_filter "$@")
698 }
699
700 add_ldexeflags(){
701     append LDEXEFLAGS $($ldflags_filter "$@")
702 }
703
704 add_stripflags(){
705     append STRIPFLAGS "$@"
706 }
707
708 add_extralibs(){
709     prepend extralibs $($ldflags_filter "$@")
710 }
711
712 add_host_cppflags(){
713     append host_cppflags "$@"
714 }
715
716 add_host_cflags(){
717     append host_cflags $($host_cflags_filter "$@")
718 }
719
720 add_host_ldflags(){
721     append host_ldflags $($host_ldflags_filter "$@")
722 }
723
724 add_compat(){
725     append compat_objs $1
726     shift
727     map 'add_cppflags -D$v' "$@"
728 }
729
730 check_cmd(){
731     log "$@"
732     "$@" >> $logfile 2>&1
733 }
734
735 cc_o(){
736     eval printf '%s\\n' $CC_O
737 }
738
739 cc_e(){
740     eval printf '%s\\n' $CC_E
741 }
742
743 check_cc(){
744     log check_cc "$@"
745     cat > $TMPC
746     log_file $TMPC
747     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
748 }
749
750 check_cpp(){
751     log check_cpp "$@"
752     cat > $TMPC
753     log_file $TMPC
754     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
755 }
756
757 as_o(){
758     eval printf '%s\\n' $AS_O
759 }
760
761 check_as(){
762     log check_as "$@"
763     cat > $TMPS
764     log_file $TMPS
765     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
766 }
767
768 check_inline_asm(){
769     log check_inline_asm "$@"
770     name="$1"
771     code="$2"
772     shift 2
773     disable $name
774     check_cc "$@" <<EOF && enable $name
775 void foo(void){ __asm__ volatile($code); }
776 EOF
777 }
778
779 check_insn(){
780     log check_insn "$@"
781     check_inline_asm ${1}_inline "\"$2\""
782     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
783 }
784
785 check_yasm(){
786     log check_yasm "$@"
787     echo "$1" > $TMPS
788     log_file $TMPS
789     shift 1
790     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
791 }
792
793 ld_o(){
794     eval printf '%s\\n' $LD_O
795 }
796
797 check_ld(){
798     log check_ld "$@"
799     flags=$(filter_out '-l*' "$@")
800     libs=$(filter '-l*' "$@")
801     check_cc $($cflags_filter $flags) || return
802     flags=$($ldflags_filter $flags)
803     libs=$($ldflags_filter $libs)
804     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
805 }
806
807 print_include(){
808     hdr=$1
809     test "${hdr%.h}" = "${hdr}" &&
810         echo "#include $hdr"    ||
811         echo "#include <$hdr>"
812 }
813
814 check_code(){
815     log check_code "$@"
816     check=$1
817     headers=$2
818     code=$3
819     shift 3
820     {
821         for hdr in $headers; do
822             print_include $hdr
823         done
824         echo "int main(void) { $code; return 0; }"
825     } | check_$check "$@"
826 }
827
828 check_cppflags(){
829     log check_cppflags "$@"
830     check_cc "$@" <<EOF && append CPPFLAGS "$@"
831 int x;
832 EOF
833 }
834
835 test_cflags(){
836     log test_cflags "$@"
837     set -- $($cflags_filter "$@")
838     check_cc "$@" <<EOF
839 int x;
840 EOF
841 }
842
843 check_cflags(){
844     log check_cflags "$@"
845     test_cflags "$@" && add_cflags "$@"
846 }
847
848 test_ldflags(){
849     log test_ldflags "$@"
850     check_ld "$@" <<EOF
851 int main(void){ return 0; }
852 EOF
853 }
854
855 check_ldflags(){
856     log check_ldflags "$@"
857     test_ldflags "$@" && add_ldflags "$@"
858 }
859
860 test_stripflags(){
861     log test_stripflags "$@"
862     # call check_cc to get a fresh TMPO
863     check_cc <<EOF
864 int main(void) { return 0; }
865 EOF
866     check_cmd $strip $STRIPFLAGS "$@" $TMPO
867 }
868
869 check_stripflags(){
870     log check_stripflags "$@"
871     test_stripflags "$@" && add_stripflags "$@"
872 }
873
874 check_header(){
875     log check_header "$@"
876     header=$1
877     shift
878     disable_safe $header
879     check_cpp "$@" <<EOF && enable_safe $header
880 #include <$header>
881 int x;
882 EOF
883 }
884
885 check_func(){
886     log check_func "$@"
887     func=$1
888     shift
889     disable $func
890     check_ld "$@" <<EOF && enable $func
891 extern int $func();
892 int main(void){ $func(); }
893 EOF
894 }
895
896 check_mathfunc(){
897     log check_mathfunc "$@"
898     func=$1
899     narg=$2
900     shift 2
901     test $narg = 2 && args="f, g" || args="f"
902     disable $func
903     check_ld "$@" <<EOF && enable $func
904 #include <math.h>
905 float foo(float f, float g) { return $func($args); }
906 int main(void){ return 0; }
907 EOF
908 }
909
910 check_func_headers(){
911     log check_func_headers "$@"
912     headers=$1
913     funcs=$2
914     shift 2
915     {
916         for hdr in $headers; do
917             print_include $hdr
918         done
919         for func in $funcs; do
920             echo "long check_$func(void) { return (long) $func; }"
921         done
922         echo "int main(void) { return 0; }"
923     } | check_ld "$@" && enable $funcs && enable_safe $headers
924 }
925
926 check_cpp_condition(){
927     log check_cpp_condition "$@"
928     header=$1
929     condition=$2
930     shift 2
931     check_cpp "$@" <<EOF
932 #include <$header>
933 #if !($condition)
934 #error "unsatisfied condition: $condition"
935 #endif
936 EOF
937 }
938
939 check_lib(){
940     log check_lib "$@"
941     header="$1"
942     func="$2"
943     shift 2
944     check_header $header && check_func $func "$@" && add_extralibs "$@"
945 }
946
947 check_lib2(){
948     log check_lib2 "$@"
949     headers="$1"
950     funcs="$2"
951     shift 2
952     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
953 }
954
955 check_pkg_config(){
956     log check_pkg_config "$@"
957     pkg="$1"
958     headers="$2"
959     funcs="$3"
960     shift 3
961     check_cmd $pkg_config --exists --print-errors $pkg || return
962     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
963     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
964     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
965         set_safe "${pkg}_cflags" $pkg_cflags   &&
966         set_safe "${pkg}_libs"   $pkg_libs
967 }
968
969 check_exec(){
970     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
971 }
972
973 check_exec_crash(){
974     code=$(cat)
975
976     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
977     # are safe but may not be available everywhere.  Thus we use
978     # raise(SIGTERM) instead.  The check is run in a subshell so we
979     # can redirect the "Terminated" message from the shell.  SIGBUS
980     # is not defined by standard C so it is used conditionally.
981
982     (check_exec "$@") >> $logfile 2>&1 <<EOF
983 #include <signal.h>
984 static void sighandler(int sig){
985     raise(SIGTERM);
986 }
987 int foo(void){
988     $code
989 }
990 int (*func_ptr)(void) = foo;
991 int main(void){
992     signal(SIGILL, sighandler);
993     signal(SIGFPE, sighandler);
994     signal(SIGSEGV, sighandler);
995 #ifdef SIGBUS
996     signal(SIGBUS, sighandler);
997 #endif
998     return func_ptr();
999 }
1000 EOF
1001 }
1002
1003 check_type(){
1004     log check_type "$@"
1005     headers=$1
1006     type=$2
1007     shift 2
1008     disable_safe "$type"
1009     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1010 }
1011
1012 check_struct(){
1013     log check_struct "$@"
1014     headers=$1
1015     struct=$2
1016     member=$3
1017     shift 3
1018     disable_safe "${struct}_${member}"
1019     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1020         enable_safe "${struct}_${member}"
1021 }
1022
1023 check_builtin(){
1024     log check_builtin "$@"
1025     name=$1
1026     headers=$2
1027     builtin=$3
1028     shift 3
1029     disable "$name"
1030     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1031 }
1032
1033 check_compile_assert(){
1034     log check_compile_assert "$@"
1035     name=$1
1036     headers=$2
1037     condition=$3
1038     shift 3
1039     disable "$name"
1040     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1041 }
1042
1043 require(){
1044     name="$1"
1045     header="$2"
1046     func="$3"
1047     shift 3
1048     check_lib $header $func "$@" || die "ERROR: $name not found"
1049 }
1050
1051 require2(){
1052     name="$1"
1053     headers="$2"
1054     func="$3"
1055     shift 3
1056     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1057 }
1058
1059 require_pkg_config(){
1060     pkg="$1"
1061     check_pkg_config "$@" || die "ERROR: $pkg not found"
1062     add_cflags    $(get_safe "${pkg}_cflags")
1063     add_extralibs $(get_safe "${pkg}_libs")
1064 }
1065
1066 hostcc_e(){
1067     eval printf '%s\\n' $HOSTCC_E
1068 }
1069
1070 hostcc_o(){
1071     eval printf '%s\\n' $HOSTCC_O
1072 }
1073
1074 check_host_cc(){
1075     log check_host_cc "$@"
1076     cat > $TMPC
1077     log_file $TMPC
1078     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1079 }
1080
1081 check_host_cpp(){
1082     log check_host_cpp "$@"
1083     cat > $TMPC
1084     log_file $TMPC
1085     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1086 }
1087
1088 check_host_cppflags(){
1089     log check_host_cppflags "$@"
1090     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1091 int x;
1092 EOF
1093 }
1094
1095 check_host_cflags(){
1096     log check_host_cflags "$@"
1097     set -- $($host_cflags_filter "$@")
1098     check_host_cc "$@" <<EOF && append host_cflags "$@"
1099 int x;
1100 EOF
1101 }
1102
1103 check_host_cpp_condition(){
1104     log check_host_cpp_condition "$@"
1105     header=$1
1106     condition=$2
1107     shift 2
1108     check_host_cpp "$@" <<EOF
1109 #include <$header>
1110 #if !($condition)
1111 #error "unsatisfied condition: $condition"
1112 #endif
1113 EOF
1114 }
1115
1116 apply(){
1117     file=$1
1118     shift
1119     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1120 }
1121
1122 cp_if_changed(){
1123     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1124     mkdir -p "$(dirname $2)"
1125     $cp_f "$1" "$2"
1126 }
1127
1128 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1129 # system-dependent things.
1130
1131 COMPONENT_LIST="
1132     bsfs
1133     decoders
1134     demuxers
1135     encoders
1136     filters
1137     hwaccels
1138     indevs
1139     muxers
1140     outdevs
1141     parsers
1142     protocols
1143 "
1144
1145 EXAMPLE_LIST="
1146     avcodec_example
1147     filter_audio_example
1148     metadata_example
1149     output_example
1150     qsvdec_example
1151     transcode_aac_example
1152 "
1153
1154 EXTERNAL_LIBRARY_LIST="
1155     avisynth
1156     bzlib
1157     frei0r
1158     gnutls
1159     libbs2b
1160     libcdio
1161     libdc1394
1162     libdcadec
1163     libfaac
1164     libfdk_aac
1165     libfontconfig
1166     libfreetype
1167     libgsm
1168     libilbc
1169     libmfx
1170     libmp3lame
1171     libopencore_amrnb
1172     libopencore_amrwb
1173     libopencv
1174     libopenh264
1175     libopenjpeg
1176     libopus
1177     libpulse
1178     librtmp
1179     libschroedinger
1180     libsnappy
1181     libspeex
1182     libtheora
1183     libtwolame
1184     libvo_aacenc
1185     libvo_amrwbenc
1186     libvorbis
1187     libvpx
1188     libwavpack
1189     libwebp
1190     libx264
1191     libx265
1192     libxavs
1193     libxcb
1194     libxcb_shm
1195     libxcb_xfixes
1196     libxvid
1197     mmal
1198     nvenc
1199     openssl
1200     x11grab
1201     zlib
1202 "
1203
1204 FEATURE_LIST="
1205     gray
1206     hardcoded_tables
1207     runtime_cpudetect
1208     safe_bitstream_reader
1209     shared
1210     small
1211     sram
1212     static
1213     swscale_alpha
1214 "
1215
1216 HWACCEL_LIST="
1217     d3d11va
1218     dxva2
1219     vaapi
1220     vda
1221     vdpau
1222 "
1223
1224 LIBRARY_LIST="
1225     avcodec
1226     avdevice
1227     avfilter
1228     avformat
1229     avresample
1230     avutil
1231     swscale
1232 "
1233
1234 LICENSE_LIST="
1235     gpl
1236     nonfree
1237     version3
1238 "
1239
1240 PROGRAM_LIST="
1241     avconv
1242     avplay
1243     avprobe
1244 "
1245
1246 SUBSYSTEM_LIST="
1247     dct
1248     doc
1249     error_resilience
1250     faan
1251     fft
1252     lsp
1253     lzo
1254     mdct
1255     network
1256     rdft
1257 "
1258
1259 CONFIG_LIST="
1260     $COMPONENT_LIST
1261     $EXAMPLE_LIST
1262     $EXTERNAL_LIBRARY_LIST
1263     $FEATURE_LIST
1264     $HWACCEL_LIST
1265     $LICENSE_LIST
1266     $LIBRARY_LIST
1267     $PROGRAM_LIST
1268     $SUBSYSTEM_LIST
1269     memalign_hack
1270     neon_clobber_test
1271     pic
1272     pod2man
1273     texi2html
1274     thumb
1275     valgrind_backtrace
1276     xmm_clobber_test
1277 "
1278
1279 THREADS_LIST="
1280     pthreads
1281     w32threads
1282 "
1283
1284 ATOMICS_LIST="
1285     atomics_gcc
1286     atomics_suncc
1287     atomics_win32
1288 "
1289
1290 ARCH_LIST="
1291     aarch64
1292     alpha
1293     arm
1294     avr32
1295     avr32_ap
1296     avr32_uc
1297     bfin
1298     ia64
1299     m68k
1300     mips
1301     mips64
1302     parisc
1303     ppc
1304     ppc64
1305     s390
1306     sh4
1307     sparc
1308     sparc64
1309     tilegx
1310     tilepro
1311     tomi
1312     x86
1313     x86_32
1314     x86_64
1315 "
1316
1317 ARCH_EXT_LIST_ARM="
1318     armv5te
1319     armv6
1320     armv6t2
1321     armv8
1322     neon
1323     vfp
1324     vfpv3
1325 "
1326
1327 ARCH_EXT_LIST_X86_SIMD="
1328     amd3dnow
1329     amd3dnowext
1330     avx
1331     avx2
1332     fma3
1333     fma4
1334     mmx
1335     mmxext
1336     sse
1337     sse2
1338     sse3
1339     sse4
1340     sse42
1341     ssse3
1342     xop
1343 "
1344
1345 ARCH_EXT_LIST_PPC="
1346     altivec
1347     dcbzl
1348     ldbrx
1349     power8
1350     ppc4xx
1351     vsx
1352 "
1353
1354 ARCH_EXT_LIST_X86="
1355     $ARCH_EXT_LIST_X86_SIMD
1356     cpunop
1357     i686
1358 "
1359
1360 ARCH_EXT_LIST="
1361     $ARCH_EXT_LIST_ARM
1362     $ARCH_EXT_LIST_PPC
1363     $ARCH_EXT_LIST_X86
1364     loongson
1365     vis
1366 "
1367
1368 ARCH_FEATURES="
1369     aligned_stack
1370     fast_64bit
1371     fast_clz
1372     fast_cmov
1373     local_aligned_8
1374     local_aligned_16
1375     simd_align_16
1376 "
1377
1378 BUILTIN_LIST="
1379     atomic_cas_ptr
1380     machine_rw_barrier
1381     MemoryBarrier
1382     mm_empty
1383     rdtsc
1384     sync_val_compare_and_swap
1385 "
1386 HAVE_LIST_CMDLINE="
1387     inline_asm
1388     symver
1389     yasm
1390 "
1391
1392 HAVE_LIST_PUB="
1393     bigendian
1394     fast_unaligned
1395 "
1396
1397 HEADERS_LIST="
1398     alsa_asoundlib_h
1399     altivec_h
1400     arpa_inet_h
1401     cdio_paranoia_h
1402     cdio_paranoia_paranoia_h
1403     dev_bktr_ioctl_bt848_h
1404     dev_bktr_ioctl_meteor_h
1405     dev_ic_bt8xx_h
1406     dev_video_bktr_ioctl_bt848_h
1407     dev_video_meteor_ioctl_meteor_h
1408     direct_h
1409     dlfcn_h
1410     d3d11_h
1411     dxva_h
1412     gsm_h
1413     io_h
1414     mach_mach_time_h
1415     machine_ioctl_bt848_h
1416     machine_ioctl_meteor_h
1417     malloc_h
1418     poll_h
1419     sndio_h
1420     soundcard_h
1421     sys_mman_h
1422     sys_param_h
1423     sys_resource_h
1424     sys_select_h
1425     sys_soundcard_h
1426     sys_time_h
1427     sys_un_h
1428     sys_videoio_h
1429     unistd_h
1430     valgrind_valgrind_h
1431     windows_h
1432     winsock2_h
1433 "
1434
1435 INTRINSICS_LIST="
1436     intrinsics_neon
1437 "
1438
1439 MATH_FUNCS="
1440     atanf
1441     atan2f
1442     cbrtf
1443     cosf
1444     exp2
1445     exp2f
1446     expf
1447     isinf
1448     isnan
1449     ldexpf
1450     llrint
1451     llrintf
1452     log2
1453     log2f
1454     log10f
1455     lrint
1456     lrintf
1457     powf
1458     rint
1459     round
1460     roundf
1461     sinf
1462     trunc
1463     truncf
1464 "
1465
1466 SYSTEM_FUNCS="
1467     aligned_malloc
1468     clock_gettime
1469     closesocket
1470     CommandLineToArgvW
1471     CoTaskMemFree
1472     CryptGenRandom
1473     dlopen
1474     fcntl
1475     flt_lim
1476     fork
1477     getaddrinfo
1478     gethrtime
1479     getopt
1480     GetProcessAffinityMask
1481     GetProcessMemoryInfo
1482     GetProcessTimes
1483     getrusage
1484     getservbyport
1485     GetSystemTimeAsFileTime
1486     gettimeofday
1487     gmtime_r
1488     inet_aton
1489     isatty
1490     jack_port_get_latency_range
1491     LoadLibrary
1492     localtime_r
1493     mach_absolute_time
1494     MapViewOfFile
1495     memalign
1496     mkstemp
1497     mmap
1498     mprotect
1499     nanosleep
1500     posix_memalign
1501     sched_getaffinity
1502     SetConsoleTextAttribute
1503     setmode
1504     setrlimit
1505     Sleep
1506     strerror_r
1507     sysconf
1508     sysctl
1509     usleep
1510     VirtualAlloc
1511 "
1512
1513 TOOLCHAIN_FEATURES="
1514     as_dn_directive
1515     as_func
1516     as_object_arch
1517     asm_mod_q
1518     attribute_may_alias
1519     attribute_packed
1520     ebp_available
1521     ebx_available
1522     gnu_as
1523     ibm_asm
1524     inline_asm_labels
1525     pragma_deprecated
1526     symver_asm_label
1527     symver_gnu_asm
1528     vfp_args
1529     xform_asm
1530     xmm_clobbers
1531 "
1532
1533 TYPES_LIST="
1534     CONDITION_VARIABLE_Ptr
1535     socklen_t
1536     struct_addrinfo
1537     struct_group_source_req
1538     struct_ip_mreq_source
1539     struct_ipv6_mreq
1540     struct_pollfd
1541     struct_rusage_ru_maxrss
1542     struct_sockaddr_in6
1543     struct_sockaddr_sa_len
1544     struct_sockaddr_storage
1545     struct_v4l2_frmivalenum_discrete
1546 "
1547
1548 HAVE_LIST="
1549     $ARCH_EXT_LIST
1550     $(add_suffix _external $ARCH_EXT_LIST)
1551     $(add_suffix _inline   $ARCH_EXT_LIST)
1552     $ARCH_FEATURES
1553     $ATOMICS_LIST
1554     $BUILTIN_LIST
1555     $HAVE_LIST_CMDLINE
1556     $HAVE_LIST_PUB
1557     $HEADERS_LIST
1558     $INTRINSICS_LIST
1559     $MATH_FUNCS
1560     $SYSTEM_FUNCS
1561     $THREADS_LIST
1562     $TOOLCHAIN_FEATURES
1563     $TYPES_LIST
1564     atomics_native
1565     dos_paths
1566     dxva2_lib
1567     libc_msvcrt
1568     libdc1394_1
1569     libdc1394_2
1570     sdl
1571     section_data_rel_ro
1572     threads
1573     vaapi_x11
1574     vdpau_x11
1575     xlib
1576 "
1577
1578 # options emitted with CONFIG_ prefix but not available on the command line
1579 CONFIG_EXTRA="
1580     aandcttables
1581     ac3dsp
1582     audio_frame_queue
1583     audiodsp
1584     blockdsp
1585     bswapdsp
1586     cabac
1587     dvprofile
1588     faandct
1589     faanidct
1590     fdctdsp
1591     fmtconvert
1592     gcrypt
1593     gmp
1594     golomb
1595     gplv3
1596     h263dsp
1597     h264chroma
1598     h264dsp
1599     h264pred
1600     h264qpel
1601     hpeldsp
1602     huffman
1603     huffyuvdsp
1604     huffyuvencdsp
1605     idctdsp
1606     iirfilter
1607     imdct15
1608     intrax8
1609     jpegtables
1610     lgplv3
1611     lpc
1612     me_cmp
1613     mpeg_er
1614     mpegaudio
1615     mpegaudiodsp
1616     mpegvideo
1617     mpegvideoenc
1618     pixblockdsp
1619     qpeldsp
1620     qsv
1621     qsvdec
1622     qsvenc
1623     rangecoder
1624     riffdec
1625     riffenc
1626     rtpdec
1627     rtpenc_chain
1628     sinewin
1629     snappy
1630     startcode
1631     texturedsp
1632     texturedspenc
1633     tpeldsp
1634     videodsp
1635     vp3dsp
1636     wma_freqs
1637 "
1638
1639 CMDLINE_SELECT="
1640     $ARCH_EXT_LIST
1641     $CONFIG_LIST
1642     $HAVE_LIST_CMDLINE
1643     $THREADS_LIST
1644     asm
1645     cross_compile
1646     debug
1647     extra_warnings
1648     logging
1649     lto
1650     optimizations
1651     rpath
1652 "
1653
1654 PATHS_LIST="
1655     bindir
1656     datadir
1657     docdir
1658     incdir
1659     libdir
1660     mandir
1661     prefix
1662     shlibdir
1663 "
1664
1665 CMDLINE_SET="
1666     $PATHS_LIST
1667     ar
1668     arch
1669     as
1670     build_suffix
1671     cc
1672     cpu
1673     cross_prefix
1674     dep_cc
1675     env
1676     extra_version
1677     host_cc
1678     host_cflags
1679     host_ld
1680     host_ldflags
1681     host_libs
1682     host_os
1683     ld
1684     logfile
1685     malloc_prefix
1686     nm
1687     optflags
1688     pkg_config
1689     pkg_config_flags
1690     random_seed
1691     samples
1692     sysinclude
1693     sysroot
1694     target_exec
1695     target_os
1696     target_path
1697     target_samples
1698     toolchain
1699 "
1700
1701 CMDLINE_APPEND="
1702     extra_cflags
1703     host_cppflags
1704 "
1705
1706 # code dependency declarations
1707
1708 # architecture extensions
1709
1710 armv5te_deps="arm"
1711 armv6_deps="arm"
1712 armv6t2_deps="arm"
1713 armv8_deps="aarch64"
1714 neon_deps_any="aarch64 arm"
1715 intrinsics_neon_deps="neon"
1716 vfp_deps_any="aarch64 arm"
1717 vfpv3_deps="vfp"
1718
1719 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1720
1721 altivec_deps="ppc"
1722 ppc4xx_deps="ppc"
1723 vsx_deps="altivec"
1724 power8_deps="vsx"
1725
1726 cpunop_deps="i686"
1727 x86_64_select="i686"
1728 x86_64_suggest="fast_cmov"
1729
1730 amd3dnow_deps="mmx"
1731 amd3dnowext_deps="amd3dnow"
1732 i686_deps="x86"
1733 mmx_deps="x86"
1734 mmxext_deps="mmx"
1735 sse_deps="mmxext"
1736 sse2_deps="sse"
1737 sse3_deps="sse2"
1738 ssse3_deps="sse3"
1739 sse4_deps="ssse3"
1740 sse42_deps="sse4"
1741 avx_deps="sse42"
1742 xop_deps="avx"
1743 fma3_deps="avx"
1744 fma4_deps="avx"
1745 avx2_deps="avx"
1746
1747 mmx_external_deps="yasm"
1748 mmx_inline_deps="inline_asm"
1749 mmx_suggest="mmx_external mmx_inline"
1750
1751 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1752     eval dep=\$${ext}_deps
1753     eval ${ext}_external_deps='"${dep}_external"'
1754     eval ${ext}_inline_deps='"${dep}_inline"'
1755     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1756 done
1757
1758 aligned_stack_if_any="aarch64 ppc x86"
1759 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1760 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1761 fast_unaligned_if_any="aarch64 ppc x86"
1762 simd_align_16_if_any="altivec neon sse"
1763
1764 # system capabilities
1765 symver_if_any="symver_asm_label symver_gnu_asm"
1766 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1767
1768 # threading support
1769 atomics_gcc_if="sync_val_compare_and_swap"
1770 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1771 atomics_win32_if="MemoryBarrier"
1772 atomics_native_if_any="$ATOMICS_LIST"
1773 w32threads_deps="atomics_native"
1774 threads_if_any="$THREADS_LIST"
1775
1776 # subsystems
1777 dct_select="rdft"
1778 error_resilience_select="me_cmp"
1779 faandct_deps="faan fdctdsp"
1780 faanidct_deps="faan idctdsp"
1781 intrax8_select="error_resilience"
1782 mdct_select="fft"
1783 rdft_select="fft"
1784 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1785 mpeg_er_select="error_resilience"
1786 mpegaudio_select="mpegaudiodsp"
1787 mpegaudiodsp_select="dct"
1788 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp videodsp"
1789 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1790 nvenc_deps_any="dlopen LoadLibrary"
1791 nvenc_extralibs='$ldl'
1792 qsvdec_select="qsv"
1793 qsvenc_select="qsv"
1794
1795 # decoders / encoders
1796 aac_decoder_select="imdct15 mdct sinewin"
1797 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1798 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1799 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1800 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1801 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1802 aic_decoder_select="golomb idctdsp"
1803 alac_encoder_select="lpc"
1804 als_decoder_select="bswapdsp"
1805 amrnb_decoder_select="lsp"
1806 amrwb_decoder_select="lsp"
1807 amv_decoder_select="sp5x_decoder"
1808 ape_decoder_select="bswapdsp"
1809 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1810 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1811 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1812 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1813 atrac1_decoder_select="mdct sinewin"
1814 atrac3_decoder_select="mdct"
1815 atrac3p_decoder_select="mdct sinewin"
1816 bink_decoder_select="blockdsp hpeldsp"
1817 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1818 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1819 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1820 cllc_decoder_select="bswapdsp"
1821 comfortnoise_encoder_select="lpc"
1822 cook_decoder_select="audiodsp mdct sinewin"
1823 cscd_decoder_select="lzo"
1824 cscd_decoder_suggest="zlib"
1825 dca_decoder_select="fmtconvert mdct"
1826 dnxhd_decoder_select="blockdsp idctdsp"
1827 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1828 dvvideo_decoder_select="dvprofile idctdsp"
1829 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1830 dxa_decoder_deps="zlib"
1831 eac3_decoder_select="ac3_decoder"
1832 eac3_encoder_select="ac3_encoder"
1833 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1834 eatgq_decoder_select="aandcttables idctdsp"
1835 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
1836 exr_decoder_deps="zlib"
1837 ffv1_decoder_select="golomb rangecoder"
1838 ffv1_encoder_select="rangecoder"
1839 ffvhuff_decoder_select="huffyuv_decoder"
1840 ffvhuff_encoder_select="huffyuv_encoder"
1841 fic_decoder_select="golomb"
1842 flac_decoder_select="golomb"
1843 flac_encoder_select="bswapdsp golomb lpc"
1844 flashsv_decoder_deps="zlib"
1845 flashsv_encoder_deps="zlib"
1846 flashsv2_decoder_deps="zlib"
1847 flv_decoder_select="h263_decoder"
1848 flv_encoder_select="h263_encoder"
1849 fourxm_decoder_select="blockdsp bswapdsp"
1850 fraps_decoder_select="bswapdsp huffman"
1851 g2m_decoder_deps="zlib"
1852 g2m_decoder_select="blockdsp idctdsp jpegtables"
1853 h261_decoder_select="mpeg_er mpegvideo"
1854 h261_encoder_select="aandcttables mpegvideoenc"
1855 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1856 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1857 h263i_decoder_select="h263_decoder"
1858 h263p_encoder_select="h263_encoder"
1859 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
1860 h264_decoder_suggest="error_resilience"
1861 h264_nvenc_encoder_deps="nvenc"
1862 h264_qsv_decoder_deps="libmfx"
1863 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
1864 h264_qsv_encoder_deps="libmfx"
1865 h264_qsv_encoder_select="qsvenc"
1866 hap_decoder_select="snappy texturedsp"
1867 hap_encoder_deps="libsnappy"
1868 hap_encoder_select="texturedspenc"
1869 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1870 hevc_nvenc_encoder_deps="nvenc"
1871 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1872 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1873 iac_decoder_select="imc_decoder"
1874 imc_decoder_select="bswapdsp fft mdct sinewin"
1875 indeo3_decoder_select="hpeldsp"
1876 interplay_video_decoder_select="hpeldsp"
1877 jpegls_decoder_select="golomb mjpeg_decoder"
1878 jpegls_encoder_select="golomb"
1879 jv_decoder_select="blockdsp"
1880 lagarith_decoder_select="huffyuvdsp"
1881 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
1882 loco_decoder_select="golomb"
1883 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1884 metasound_decoder_select="lsp mdct sinewin"
1885 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1886 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
1887 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
1888 mjpegb_decoder_select="mjpeg_decoder"
1889 mlp_decoder_select="mlp_parser"
1890 motionpixels_decoder_select="bswapdsp"
1891 mp1_decoder_select="mpegaudio"
1892 mp1float_decoder_select="mpegaudio"
1893 mp2_decoder_select="mpegaudio"
1894 mp2float_decoder_select="mpegaudio"
1895 mp3_decoder_select="mpegaudio"
1896 mp3adu_decoder_select="mpegaudio"
1897 mp3adufloat_decoder_select="mpegaudio"
1898 mp3float_decoder_select="mpegaudio"
1899 mp3on4_decoder_select="mpegaudio"
1900 mp3on4float_decoder_select="mpegaudio"
1901 mpc7_decoder_select="bswapdsp mpegaudiodsp"
1902 mpc8_decoder_select="mpegaudiodsp"
1903 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1904 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1905 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
1906 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1907 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
1908 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1909 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1910 mpeg4_encoder_select="h263_encoder"
1911 msmpeg4v1_decoder_select="h263_decoder"
1912 msmpeg4v2_decoder_select="h263_decoder"
1913 msmpeg4v2_encoder_select="h263_encoder"
1914 msmpeg4v3_decoder_select="h263_decoder"
1915 msmpeg4v3_encoder_select="h263_encoder"
1916 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
1917 mxpeg_decoder_select="mjpeg_decoder"
1918 nellymoser_decoder_select="mdct sinewin"
1919 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1920 nuv_decoder_select="idctdsp lzo"
1921 on2avc_decoder_select="mdct"
1922 opus_decoder_deps="avresample"
1923 opus_decoder_select="imdct15"
1924 png_decoder_deps="zlib"
1925 png_encoder_deps="zlib"
1926 png_encoder_select="huffyuvencdsp"
1927 prores_decoder_select="idctdsp"
1928 prores_encoder_select="fdctdsp"
1929 qcelp_decoder_select="lsp"
1930 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1931 ra_144_encoder_select="audio_frame_queue lpc"
1932 ralf_decoder_select="golomb"
1933 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1934 rv10_encoder_select="h263_encoder"
1935 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1936 rv20_encoder_select="h263_encoder"
1937 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1938 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1939 shorten_decoder_select="golomb"
1940 sipr_decoder_select="lsp"
1941 sp5x_decoder_select="mjpeg_decoder"
1942 svq1_decoder_select="hpeldsp"
1943 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
1944 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1945 svq3_decoder_suggest="zlib"
1946 tak_decoder_select="audiodsp"
1947 tdsc_decoder_deps="zlib"
1948 tdsc_decoder_select="mjpeg_decoder"
1949 theora_decoder_select="vp3_decoder"
1950 thp_decoder_select="mjpeg_decoder"
1951 tiff_decoder_suggest="zlib"
1952 tiff_encoder_suggest="zlib"
1953 truehd_decoder_select="mlp_decoder"
1954 truemotion2_decoder_select="bswapdsp"
1955 truespeech_decoder_select="bswapdsp"
1956 tscc_decoder_deps="zlib"
1957 txd_decoder_select="texturedsp"
1958 twinvq_decoder_select="mdct lsp sinewin"
1959 utvideo_decoder_select="bswapdsp"
1960 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
1961 vble_decoder_select="huffyuvdsp"
1962 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
1963 vc1image_decoder_select="vc1_decoder"
1964 vorbis_decoder_select="mdct"
1965 vorbis_encoder_select="mdct"
1966 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1967 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1968 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1969 vp6a_decoder_select="vp6_decoder"
1970 vp6f_decoder_select="vp6_decoder"
1971 vp7_decoder_select="h264pred videodsp"
1972 vp8_decoder_select="h264pred videodsp"
1973 vp9_decoder_select="videodsp"
1974 webp_decoder_select="vp8_decoder"
1975 wmapro_decoder_select="mdct sinewin wma_freqs"
1976 wmav1_decoder_select="mdct sinewin wma_freqs"
1977 wmav1_encoder_select="mdct sinewin wma_freqs"
1978 wmav2_decoder_select="mdct sinewin wma_freqs"
1979 wmav2_encoder_select="mdct sinewin wma_freqs"
1980 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1981 wmv1_decoder_select="h263_decoder"
1982 wmv1_encoder_select="h263_encoder"
1983 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
1984 wmv2_encoder_select="h263_encoder"
1985 wmv3_decoder_select="vc1_decoder"
1986 wmv3image_decoder_select="wmv3_decoder"
1987 zerocodec_decoder_deps="zlib"
1988 zlib_decoder_deps="zlib"
1989 zlib_encoder_deps="zlib"
1990 zmbv_decoder_deps="zlib"
1991 zmbv_encoder_deps="zlib"
1992
1993 # hardware accelerators
1994 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
1995 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
1996 vaapi_deps="va_va_h"
1997 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1998 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1999 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2000
2001 h263_vaapi_hwaccel_deps="vaapi"
2002 h263_vaapi_hwaccel_select="h263_decoder"
2003 h263_vdpau_hwaccel_deps="vdpau"
2004 h263_vdpau_hwaccel_select="h263_decoder"
2005 h264_d3d11va_hwaccel_deps="d3d11va"
2006 h264_d3d11va_hwaccel_select="h264_decoder"
2007 h264_dxva2_hwaccel_deps="dxva2"
2008 h264_dxva2_hwaccel_select="h264_decoder"
2009 h264_mmal_decoder_deps="mmal"
2010 h264_mmal_hwaccel_deps="mmal"
2011 h264_mmal_decoder_select="h264_decoder"
2012 h264_mmal_encoder_deps="mmal"
2013 h264_qsv_hwaccel_deps="libmfx"
2014 h264_vaapi_hwaccel_deps="vaapi"
2015 h264_vaapi_hwaccel_select="h264_decoder"
2016 h264_vda_hwaccel_deps="vda"
2017 h264_vda_hwaccel_select="h264_decoder"
2018 h264_vda_old_hwaccel_deps="vda"
2019 h264_vda_old_hwaccel_select="h264_decoder"
2020 h264_vdpau_hwaccel_deps="vdpau"
2021 h264_vdpau_hwaccel_select="h264_decoder"
2022 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2023 hevc_d3d11va_hwaccel_select="hevc_decoder"
2024 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2025 hevc_dxva2_hwaccel_select="hevc_decoder"
2026 mpeg1_vdpau_hwaccel_deps="vdpau"
2027 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2028 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2029 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2030 mpeg2_dxva2_hwaccel_deps="dxva2"
2031 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2032 mpeg2_vaapi_hwaccel_deps="vaapi"
2033 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2034 mpeg2_vdpau_hwaccel_deps="vdpau"
2035 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2036 mpeg4_vaapi_hwaccel_deps="vaapi"
2037 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2038 mpeg4_vdpau_hwaccel_deps="vdpau"
2039 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2040 vc1_d3d11va_hwaccel_deps="d3d11va"
2041 vc1_d3d11va_hwaccel_select="vc1_decoder"
2042 vc1_dxva2_hwaccel_deps="dxva2"
2043 vc1_dxva2_hwaccel_select="vc1_decoder"
2044 vc1_vaapi_hwaccel_deps="vaapi"
2045 vc1_vaapi_hwaccel_select="vc1_decoder"
2046 vc1_vdpau_hwaccel_deps="vdpau"
2047 vc1_vdpau_hwaccel_select="vc1_decoder"
2048 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2049 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2050 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2051 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2052
2053 # parsers
2054 h264_parser_select="h264_decoder"
2055 mpegvideo_parser_select="mpegvideo"
2056 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2057 vc1_parser_select="mpegvideo startcode vc1_decoder"
2058
2059 # bitstream_filters
2060 mjpeg2jpeg_bsf_select="jpegtables"
2061
2062 # external libraries
2063 libdcadec_decoder_deps="libdcadec"
2064 libfaac_encoder_deps="libfaac"
2065 libfaac_encoder_select="audio_frame_queue"
2066 libfdk_aac_decoder_deps="libfdk_aac"
2067 libfdk_aac_encoder_deps="libfdk_aac"
2068 libfdk_aac_encoder_select="audio_frame_queue"
2069 libgsm_decoder_deps="libgsm"
2070 libgsm_encoder_deps="libgsm"
2071 libgsm_ms_decoder_deps="libgsm"
2072 libgsm_ms_encoder_deps="libgsm"
2073 libilbc_decoder_deps="libilbc"
2074 libilbc_encoder_deps="libilbc"
2075 libmp3lame_encoder_deps="libmp3lame"
2076 libmp3lame_encoder_select="audio_frame_queue"
2077 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2078 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2079 libopencore_amrnb_encoder_select="audio_frame_queue"
2080 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2081 libopenh264_encoder_deps="libopenh264"
2082 libopenjpeg_decoder_deps="libopenjpeg"
2083 libopenjpeg_encoder_deps="libopenjpeg"
2084 libopus_decoder_deps="libopus"
2085 libopus_encoder_deps="libopus"
2086 libopus_encoder_select="audio_frame_queue"
2087 libschroedinger_decoder_deps="libschroedinger"
2088 libschroedinger_encoder_deps="libschroedinger"
2089 libspeex_decoder_deps="libspeex"
2090 libspeex_encoder_deps="libspeex"
2091 libspeex_encoder_select="audio_frame_queue"
2092 libtheora_encoder_deps="libtheora"
2093 libtwolame_encoder_deps="libtwolame"
2094 libvo_aacenc_encoder_deps="libvo_aacenc"
2095 libvo_aacenc_encoder_select="audio_frame_queue"
2096 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2097 libvorbis_encoder_deps="libvorbis"
2098 libvorbis_encoder_select="audio_frame_queue"
2099 libvpx_vp8_decoder_deps="libvpx"
2100 libvpx_vp8_encoder_deps="libvpx"
2101 libvpx_vp9_decoder_deps="libvpx"
2102 libvpx_vp9_encoder_deps="libvpx"
2103 libwavpack_encoder_deps="libwavpack"
2104 libwebp_encoder_deps="libwebp"
2105 libx264_encoder_deps="libx264"
2106 libx265_encoder_deps="libx265"
2107 libxavs_encoder_deps="libxavs"
2108 libxvid_encoder_deps="libxvid"
2109
2110 # demuxers / muxers
2111 ac3_demuxer_select="ac3_parser"
2112 asf_demuxer_select="riffdec"
2113 asf_muxer_select="riffenc"
2114 asf_stream_muxer_select="asf_muxer"
2115 avi_demuxer_select="riffdec"
2116 avi_muxer_select="riffenc"
2117 avisynth_demuxer_deps="avisynth"
2118 avisynth_demuxer_select="riffdec"
2119 caf_demuxer_select="riffdec"
2120 dash_muxer_select="mp4_muxer"
2121 dirac_demuxer_select="dirac_parser"
2122 dv_demuxer_select="dvprofile"
2123 dv_muxer_select="dvprofile"
2124 dxa_demuxer_select="riffdec"
2125 eac3_demuxer_select="ac3_parser"
2126 f4v_muxer_select="mov_muxer"
2127 flac_demuxer_select="flac_parser"
2128 hds_muxer_select="flv_muxer"
2129 hls_muxer_select="mpegts_muxer"
2130 ipod_muxer_select="mov_muxer"
2131 ismv_muxer_select="mov_muxer"
2132 matroska_audio_muxer_select="matroska_muxer"
2133 matroska_demuxer_select="riffdec"
2134 matroska_demuxer_suggest="bzlib lzo zlib"
2135 matroska_muxer_select="riffenc"
2136 mmf_muxer_select="riffenc"
2137 mov_demuxer_select="riffdec"
2138 mov_demuxer_suggest="zlib"
2139 mov_muxer_select="riffenc rtpenc_chain"
2140 mp3_demuxer_select="mpegaudio_parser"
2141 mp4_muxer_select="mov_muxer"
2142 mpegts_muxer_select="adts_muxer latm_muxer"
2143 mpegtsraw_demuxer_select="mpegts_demuxer"
2144 mxf_d10_muxer_select="mxf_muxer"
2145 nut_muxer_select="riffenc"
2146 nuv_demuxer_select="riffdec"
2147 oga_muxer_select="ogg_muxer"
2148 ogg_demuxer_select="golomb"
2149 opus_muxer_select="ogg_muxer"
2150 psp_muxer_select="mov_muxer"
2151 rtp_demuxer_select="sdp_demuxer"
2152 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2153 rtsp_demuxer_select="http_protocol rtpdec"
2154 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2155 sap_demuxer_select="sdp_demuxer"
2156 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2157 sdp_demuxer_select="rtpdec"
2158 smoothstreaming_muxer_select="ismv_muxer"
2159 spdif_muxer_select="aac_parser"
2160 spx_muxer_select="ogg_muxer"
2161 tak_demuxer_select="tak_parser"
2162 tg2_muxer_select="mov_muxer"
2163 tgp_muxer_select="mov_muxer"
2164 w64_demuxer_select="wav_demuxer"
2165 wav_demuxer_select="riffdec"
2166 wav_muxer_select="riffenc"
2167 webm_muxer_select="riffenc"
2168 wtv_demuxer_select="riffdec"
2169 xmv_demuxer_select="riffdec"
2170 xwma_demuxer_select="riffdec"
2171
2172 # indevs / outdevs
2173 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2174 alsa_outdev_deps="alsa_asoundlib_h"
2175 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2176 dv1394_indev_deps="dv1394"
2177 dv1394_indev_select="dv_demuxer"
2178 fbdev_indev_deps="linux_fb_h"
2179 jack_indev_deps="jack_jack_h pthreads"
2180 libcdio_indev_deps="libcdio"
2181 libdc1394_indev_deps="libdc1394"
2182 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2183 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2184 pulse_indev_deps="libpulse"
2185 sndio_indev_deps="sndio_h"
2186 sndio_outdev_deps="sndio_h"
2187 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2188 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2189 vfwcap_indev_extralibs="-lavicap32"
2190 x11grab_indev_deps="x11grab"
2191 x11grab_xcb_indev_deps="libxcb"
2192
2193 # protocols
2194 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2195 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2196 ffrtmpcrypt_protocol_select="tcp_protocol"
2197 ffrtmphttp_protocol_deps="!librtmp_protocol"
2198 ffrtmphttp_protocol_select="http_protocol"
2199 gopher_protocol_select="network"
2200 http_protocol_select="tcp_protocol"
2201 httpproxy_protocol_select="tcp_protocol"
2202 https_protocol_select="tls_protocol"
2203 icecast_protocol_select="http_protocol"
2204 librtmp_protocol_deps="librtmp"
2205 librtmpe_protocol_deps="librtmp"
2206 librtmps_protocol_deps="librtmp"
2207 librtmpt_protocol_deps="librtmp"
2208 librtmpte_protocol_deps="librtmp"
2209 mmsh_protocol_select="http_protocol"
2210 mmst_protocol_select="network"
2211 rtmp_protocol_deps="!librtmp_protocol"
2212 rtmp_protocol_select="tcp_protocol"
2213 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2214 rtmps_protocol_deps="!librtmp_protocol"
2215 rtmps_protocol_select="tls_protocol"
2216 rtmpt_protocol_select="ffrtmphttp_protocol"
2217 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2218 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2219 rtp_protocol_select="udp_protocol"
2220 sctp_protocol_deps="struct_sctp_event_subscribe"
2221 sctp_protocol_select="network"
2222 srtp_protocol_select="rtp_protocol"
2223 tcp_protocol_select="network"
2224 tls_gnutls_protocol_deps="gnutls"
2225 tls_gnutls_protocol_select="tcp_protocol"
2226 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2227 tls_openssl_protocol_select="tcp_protocol"
2228 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2229 udp_protocol_select="network"
2230 unix_protocol_deps="sys_un_h"
2231 unix_protocol_select="network"
2232
2233 # filters
2234 blackframe_filter_deps="gpl"
2235 boxblur_filter_deps="gpl"
2236 bs2b_filter_deps="libbs2b"
2237 cropdetect_filter_deps="gpl"
2238 delogo_filter_deps="gpl"
2239 drawtext_filter_deps="libfreetype"
2240 frei0r_filter_deps="frei0r dlopen"
2241 frei0r_filter_extralibs='$ldl'
2242 frei0r_src_filter_deps="frei0r dlopen"
2243 frei0r_src_filter_extralibs='$ldl'
2244 hqdn3d_filter_deps="gpl"
2245 interlace_filter_deps="gpl"
2246 ocv_filter_deps="libopencv"
2247 resample_filter_deps="avresample"
2248 scale_filter_deps="swscale"
2249
2250 # examples
2251 avcodec_example_deps="avcodec avutil"
2252 filter_audio_example_deps="avfilter avutil"
2253 metadata_example_deps="avformat avutil"
2254 output_example_deps="avcodec avformat avutil swscale"
2255 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2256 transcode_aac_example_deps="avcodec avformat avresample"
2257
2258 # libraries, in linking order
2259 avcodec_deps="avutil"
2260 avdevice_deps="avformat avcodec avutil"
2261 avfilter_deps="avutil"
2262 avformat_deps="avcodec avutil"
2263 avresample_deps="avutil"
2264 swscale_deps="avutil"
2265
2266 # programs
2267 avconv_deps="avcodec avfilter avformat avresample swscale"
2268 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2269                fps_filter null_filter resample_filter scale_filter
2270                setpts_filter trim_filter"
2271 avplay_deps="avcodec avformat avresample swscale sdl"
2272 avplay_libs='$sdl_libs'
2273 avplay_select="rdft transpose_filter hflip_filter vflip_filter"
2274 avprobe_deps="avcodec avformat"
2275
2276 # documentation
2277 pod2man_deps="doc"
2278 texi2html_deps="doc"
2279
2280 # default parameters
2281
2282 logfile="config.log"
2283
2284 # installation paths
2285 prefix_default="/usr/local"
2286 bindir_default='${prefix}/bin'
2287 datadir_default='${prefix}/share/avconv'
2288 docdir_default='${prefix}/share/doc/libav'
2289 incdir_default='${prefix}/include'
2290 libdir_default='${prefix}/lib'
2291 mandir_default='${prefix}/share/man'
2292 shlibdir_default="$libdir_default"
2293
2294 # toolchain
2295 ar_default="ar"
2296 cc_default="gcc"
2297 host_cc_default="gcc"
2298 cp_f="cp -f"
2299 ln_s="ln -s -f"
2300 nm_default="nm -g"
2301 objformat="elf"
2302 pkg_config_default=pkg-config
2303 ranlib="ranlib"
2304 strip="strip"
2305 yasmexe="yasm"
2306
2307 # machine
2308 arch_default=$(uname -m)
2309 cpu="generic"
2310 intrinsics="none"
2311
2312 # OS
2313 target_os_default=$(tolower $(uname -s))
2314 host_os=$target_os_default
2315
2316 # configurable options
2317 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2318
2319 enable asm
2320 enable debug
2321 enable doc
2322 enable faan faandct faanidct
2323 enable optimizations
2324 enable safe_bitstream_reader
2325 enable static
2326 enable swscale_alpha
2327 enable valgrind_backtrace
2328
2329 # By default, enable only those hwaccels that have no external dependencies.
2330 enable d3d11va dxva2 vda vdpau
2331
2332 # build settings
2333 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2334 LIBPREF="lib"
2335 LIBSUF=".a"
2336 FULLNAME='$(NAME)$(BUILDSUF)'
2337 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2338 SLIBPREF="lib"
2339 SLIBSUF=".so"
2340 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2341 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2342 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2343 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2344 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2345 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2346
2347 asflags_filter=echo
2348 cflags_filter=echo
2349 ldflags_filter=echo
2350
2351 AS_C='-c'
2352 AS_O='-o $@'
2353 CC_C='-c'
2354 CC_E='-E -o $@'
2355 CC_O='-o $@'
2356 LD_O='-o $@'
2357 LD_LIB='-l%'
2358 LD_PATH='-L'
2359 HOSTCC_C='-c'
2360 HOSTCC_E='-E -o $@'
2361 HOSTCC_O='-o $@'
2362 HOSTLD_O='-o $@'
2363
2364 host_libs='-lm'
2365 host_cflags_filter=echo
2366 host_ldflags_filter=echo
2367
2368 target_path='$(CURDIR)'
2369
2370 # since the object filename is not given with the -MM flag, the compiler
2371 # is only able to print the basename, and we must add the path ourselves
2372 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2373 DEPFLAGS='-MM'
2374
2375 # find source path
2376 if test -f configure; then
2377     source_path=.
2378 else
2379     source_path=$(cd $(dirname "$0"); pwd)
2380     echo "$source_path" | grep -q '[[:blank:]]' &&
2381         die "Out of tree builds are impossible with whitespace in source path."
2382     test -e "$source_path/config.h" &&
2383         die "Out of tree builds are impossible with config.h in source dir."
2384 fi
2385
2386 for v in "$@"; do
2387     r=${v#*=}
2388     l=${v%"$r"}
2389     r=$(sh_quote "$r")
2390     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2391 done
2392
2393 find_things(){
2394     thing=$1
2395     pattern=$2
2396     file=$source_path/$3
2397     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2398 }
2399
2400 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2401 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2402 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2403 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2404 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2405 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2406 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2407 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2408 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2409 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2410 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2411
2412 ALL_COMPONENTS="
2413     $BSF_LIST
2414     $DECODER_LIST
2415     $DEMUXER_LIST
2416     $ENCODER_LIST
2417     $FILTER_LIST
2418     $HWACCEL_LIST
2419     $INDEV_LIST
2420     $MUXER_LIST
2421     $OUTDEV_LIST
2422     $PARSER_LIST
2423     $PROTOCOL_LIST
2424 "
2425
2426 for n in $COMPONENT_LIST; do
2427     v=$(toupper ${n%s})_LIST
2428     eval enable \$$v
2429     eval ${n}_if_any="\$$v"
2430 done
2431
2432 enable $ARCH_EXT_LIST
2433
2434 die_unknown(){
2435     echo "Unknown option \"$1\"."
2436     echo "See $0 --help for available options."
2437     exit 1
2438 }
2439
2440 print_3_columns() {
2441     cat | tr ' ' '\n' | sort | pr -r -3 -t
2442 }
2443
2444 show_list() {
2445     suffix=_$1
2446     shift
2447     echo $* | sed s/$suffix//g | print_3_columns
2448     exit 0
2449 }
2450
2451 rand_list(){
2452     IFS=', '
2453     set -- $*
2454     unset IFS
2455     for thing; do
2456         comp=${thing%:*}
2457         prob=${thing#$comp}
2458         prob=${prob#:}
2459         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2460         echo "prob ${prob:-0.5}"
2461         printf '%s\n' $comp
2462     done
2463 }
2464
2465 do_random(){
2466     action=$1
2467     shift
2468     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2469     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2470 }
2471
2472 for opt do
2473     optval="${opt#*=}"
2474     case "$opt" in
2475         --extra-ldflags=*)
2476             add_ldflags $optval
2477         ;;
2478         --extra-ldexeflags=*)
2479             add_ldexeflags $optval
2480         ;;
2481         --extra-libs=*)
2482             add_extralibs $optval
2483         ;;
2484         --disable-devices)
2485             disable $INDEV_LIST $OUTDEV_LIST
2486         ;;
2487         --enable-debug=*)
2488             debuglevel="$optval"
2489         ;;
2490         --disable-programs)
2491             disable $PROGRAM_LIST
2492         ;;
2493         --disable-everything)
2494             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2495         ;;
2496         --disable-all)
2497             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2498             disable $LIBRARY_LIST $PROGRAM_LIST doc
2499         ;;
2500         --enable-random|--disable-random)
2501             action=${opt%%-random}
2502             do_random ${action#--} $COMPONENT_LIST
2503         ;;
2504         --enable-random=*|--disable-random=*)
2505             action=${opt%%-random=*}
2506             do_random ${action#--} $optval
2507         ;;
2508         --enable-*=*|--disable-*=*)
2509             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2510             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2511             eval list=\$$(toupper $thing)_LIST
2512             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2513             $action $(filter "$name" $list)
2514         ;;
2515         --enable-avserver|--disable-avserver*)
2516             warn "avserver has been removed, the ${opt} option is only"\
2517                  "provided for compatibility and will be removed in the future"
2518         ;;
2519         --enable-?*|--disable-?*)
2520             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2521             if is_in $option $COMPONENT_LIST; then
2522                 test $action = disable && action=unset
2523                 eval $action \$$(toupper ${option%s})_LIST
2524             elif is_in $option $CMDLINE_SELECT; then
2525                 $action $option
2526             else
2527                 die_unknown $opt
2528             fi
2529         ;;
2530         --list-*)
2531             NAME="${opt#--list-}"
2532             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2533             NAME=${NAME%s}
2534             eval show_list $NAME \$$(toupper $NAME)_LIST
2535         ;;
2536         --help|-h) show_help
2537         ;;
2538         *)
2539             optname="${opt%%=*}"
2540             optname="${optname#--}"
2541             optname=$(echo "$optname" | sed 's/-/_/g')
2542             if is_in $optname $CMDLINE_SET; then
2543                 eval $optname='$optval'
2544             elif is_in $optname $CMDLINE_APPEND; then
2545                 append $optname "$optval"
2546             else
2547                 die_unknown $opt
2548             fi
2549         ;;
2550     esac
2551 done
2552
2553 for e in $env; do
2554     eval "export $e"
2555 done
2556
2557 disabled logging && logfile=/dev/null
2558
2559 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2560 set >> $logfile
2561
2562 case "$toolchain" in
2563     clang-asan)
2564         cc_default="clang"
2565         add_cflags  -fsanitize=address
2566         add_ldflags -fsanitize=address
2567     ;;
2568     clang-tsan)
2569         cc_default="clang"
2570         add_cflags  -fsanitize=thread -pie
2571         add_ldflags -fsanitize=thread -pie
2572     ;;
2573     clang-usan)
2574         cc_default="clang"
2575         add_cflags  -fsanitize=undefined -O1
2576         add_ldflags -fsanitize=undefined
2577     ;;
2578     gcc-asan)
2579         cc_default="gcc"
2580         add_cflags  -fsanitize=address
2581         add_ldflags -fsanitize=address
2582     ;;
2583     gcc-tsan)
2584         cc_default="gcc"
2585         add_cflags  -fsanitize=thread -pie -fPIC
2586         add_ldflags -fsanitize=thread -pie -fPIC
2587     ;;
2588     gcc-usan)
2589         cc_default="gcc"
2590         add_cflags  -fsanitize=undefined
2591         add_ldflags -fsanitize=undefined
2592     ;;
2593     valgrind-massif)
2594         target_exec_default="valgrind"
2595         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2596     ;;
2597     valgrind-memcheck)
2598         target_exec_default="valgrind"
2599         target_exec_args="--track-origins=yes --leak-check=full"
2600     ;;
2601     msvc)
2602         # Check whether the current MSVC version needs the C99 converter.
2603         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2604         # support enough of C99 to build libav. Default to the new
2605         # behaviour if the regexp was unable to match anything, since this
2606         # successfully parses the version number of existing supported
2607         # versions that require the converter (MSVC 2010 and 2012).
2608         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2609         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2610             cc_default="cl"
2611         else
2612             cc_default="c99wrap cl"
2613         fi
2614         ld_default="link"
2615         nm_default="dumpbin -symbols"
2616         ar_default="lib"
2617         target_os_default="win32"
2618         # Use a relative path for TMPDIR. This makes sure all the
2619         # ffconf temp files are written with a relative path, avoiding
2620         # issues with msys/win32 path conversion for MSVC parameters
2621         # such as -Fo<file> or -out:<file>.
2622         TMPDIR=.
2623     ;;
2624     icl)
2625         cc_default="icl"
2626         ld_default="xilink"
2627         nm_default="dumpbin -symbols"
2628         ar_default="xilib"
2629         target_os_default="win32"
2630         TMPDIR=.
2631     ;;
2632     gcov)
2633         add_cflags  -fprofile-arcs -ftest-coverage
2634         add_ldflags -fprofile-arcs -ftest-coverage
2635     ;;
2636     hardened)
2637         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2638         add_cflags   -fno-strict-overflow -fstack-protector-all
2639         add_ldflags  -Wl,-z,relro -Wl,-z,now
2640     ;;
2641     ?*)
2642         die "Unknown toolchain $toolchain"
2643     ;;
2644 esac
2645
2646 test -n "$cross_prefix" && enable cross_compile
2647
2648 if enabled cross_compile; then
2649     test -n "$arch" && test -n "$target_os" ||
2650         die "Must specify target arch and OS when cross-compiling"
2651 fi
2652
2653 ar_default="${cross_prefix}${ar_default}"
2654 cc_default="${cross_prefix}${cc_default}"
2655 nm_default="${cross_prefix}${nm_default}"
2656 pkg_config_default="${cross_prefix}${pkg_config_default}"
2657 ranlib="${cross_prefix}${ranlib}"
2658 strip="${cross_prefix}${strip}"
2659
2660 sysinclude_default="${sysroot}/usr/include"
2661
2662 set_default arch cc pkg_config sysinclude target_exec target_os
2663 enabled cross_compile || host_cc_default=$cc
2664 set_default host_cc
2665
2666 if ! $pkg_config --version >/dev/null 2>&1; then
2667     warn "$pkg_config not found, library detection may fail."
2668     pkg_config=false
2669 fi
2670
2671 exesuf() {
2672     case $1 in
2673         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2674     esac
2675 }
2676
2677 EXESUF=$(exesuf $target_os)
2678 HOSTEXESUF=$(exesuf $host_os)
2679
2680 # set temporary file name
2681 : ${TMPDIR:=$TEMPDIR}
2682 : ${TMPDIR:=$TMP}
2683 : ${TMPDIR:=/tmp}
2684
2685 if ! check_cmd mktemp -u XXXXXX; then
2686     # simple replacement for missing mktemp
2687     # NOT SAFE FOR GENERAL USE
2688     mktemp(){
2689         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2690     }
2691 fi
2692
2693 tmpfile(){
2694     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2695         (set -C; exec > $tmp) 2>/dev/null ||
2696         die "Unable to create temporary file in $TMPDIR."
2697     append TMPFILES $tmp
2698     eval $1=$tmp
2699 }
2700
2701 trap 'rm -f -- $TMPFILES' EXIT
2702
2703 tmpfile TMPASM .asm
2704 tmpfile TMPC   .c
2705 tmpfile TMPE   $EXESUF
2706 tmpfile TMPH   .h
2707 tmpfile TMPO   .o
2708 tmpfile TMPS   .S
2709 tmpfile TMPSH  .sh
2710 tmpfile TMPV   .ver
2711
2712 unset -f mktemp
2713
2714 chmod +x $TMPE
2715
2716 # make sure we can execute files in $TMPDIR
2717 cat > $TMPSH 2>> $logfile <<EOF
2718 #! /bin/sh
2719 EOF
2720 chmod +x $TMPSH >> $logfile 2>&1
2721 if ! $TMPSH >> $logfile 2>&1; then
2722     cat <<EOF
2723 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2724 variable to another directory and make sure that it is not mounted noexec.
2725 EOF
2726     die "Sanity test failed."
2727 fi
2728
2729 armasm_flags(){
2730     for flag; do
2731         case $flag in
2732             # Filter out MSVC cl.exe options from cflags that shouldn't
2733             # be passed to gas-preprocessor
2734             -M[TD]*)                                            ;;
2735             *)                  echo $flag                      ;;
2736         esac
2737    done
2738 }
2739
2740 ccc_flags(){
2741     for flag; do
2742         case $flag in
2743             -std=c99)           echo -c99                       ;;
2744             -mcpu=*)            echo -arch ${flag#*=}           ;;
2745             -mieee)             echo -ieee                      ;;
2746             -O*|-fast)          echo $flag                      ;;
2747             -fno-math-errno)    echo -assume nomath_errno       ;;
2748             -g)                 echo -g3                        ;;
2749             -Wall)              echo -msg_enable level2         ;;
2750             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2751             -Wl,*)              echo $flag                      ;;
2752             -f*|-W*)                                            ;;
2753             *)                  echo $flag                      ;;
2754         esac
2755    done
2756 }
2757
2758 cparser_flags(){
2759     for flag; do
2760         case $flag in
2761             -Wno-switch)             echo -Wno-switch-enum ;;
2762             -Wno-format-zero-length) ;;
2763             -Wdisabled-optimization) ;;
2764             -Wno-pointer-sign)       echo -Wno-other ;;
2765             *)                       echo $flag ;;
2766         esac
2767     done
2768 }
2769
2770 msvc_common_flags(){
2771     for flag; do
2772         case $flag in
2773             # In addition to specifying certain flags under the compiler
2774             # specific filters, they must be specified here as well or else the
2775             # generic catch all at the bottom will print the original flag.
2776             -Wall)                ;;
2777             -std=c99)             ;;
2778             # Common flags
2779             -fomit-frame-pointer) ;;
2780             -g)                   echo -Z7 ;;
2781             -fno-math-errno)      ;;
2782             -fno-common)          ;;
2783             -fno-signed-zeros)    ;;
2784             -fPIC)                ;;
2785             -mthumb)              ;;
2786             -march=*)             ;;
2787             -lz)                  echo zlib.lib ;;
2788             -lavifil32)           echo vfw32.lib ;;
2789             -lavicap32)           echo vfw32.lib user32.lib ;;
2790             -l*)                  echo ${flag#-l}.lib ;;
2791             -L*)                  echo -libpath:${flag#-L} ;;
2792             *)                    echo $flag ;;
2793         esac
2794     done
2795 }
2796
2797 msvc_flags(){
2798     msvc_common_flags "$@"
2799     for flag; do
2800         case $flag in
2801             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2802                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2803                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2804                                        -wd4273 -wd4554 -wd4701 ;;
2805         esac
2806     done
2807 }
2808
2809 icl_flags(){
2810     msvc_common_flags "$@"
2811     for flag; do
2812         case $flag in
2813             # Despite what Intel's documentation says -Wall, which is supported
2814             # on Windows, does enable remarks so disable them here.
2815             -Wall)                echo $flag -Qdiag-disable:remark ;;
2816             -std=c99)             echo -Qstd=c99 ;;
2817         esac
2818     done
2819 }
2820
2821 pgi_flags(){
2822     for flag; do
2823         case $flag in
2824             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2825             -fomit-frame-pointer) echo -Mnoframe ;;
2826             -g)                   echo -gopt ;;
2827             *)                    echo $flag ;;
2828         esac
2829     done
2830 }
2831
2832 suncc_flags(){
2833     for flag; do
2834         case $flag in
2835             -march=*|-mcpu=*)
2836                 case "${flag#*=}" in
2837                     native)                   echo -xtarget=native       ;;
2838                     v9|niagara)               echo -xarch=sparc          ;;
2839                     ultrasparc)               echo -xarch=sparcvis       ;;
2840                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2841                     i586|pentium)             echo -xchip=pentium        ;;
2842                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2843                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2844                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2845                     pentium4*)          echo -xtarget=pentium4           ;;
2846                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2847                     *-sse3)             echo -xarch=sse3                 ;;
2848                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2849                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2850                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2851                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2852                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2853                     k8|opteron|athlon64|athlon-fx)
2854                                                echo -xarch=sse2a         ;;
2855                     athlon*)                   echo -xarch=pentium_proa  ;;
2856                 esac
2857                 ;;
2858             -std=c99)             echo -xc99              ;;
2859             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2860             -fPIC)                echo -KPIC -xcode=pic32 ;;
2861             -W*,*)                echo $flag              ;;
2862             -f*-*|-W*|-mimpure-text)                      ;;
2863             -shared)              echo -G                 ;;
2864             *)                    echo $flag              ;;
2865         esac
2866     done
2867 }
2868
2869 tms470_flags(){
2870     for flag; do
2871         case $flag in
2872             -march=*|-mcpu=*)
2873                 case "${flag#*=}" in
2874                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2875                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2876                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2877                     armv6*|arm11*)          echo -mv=6   ;;
2878                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2879                                             echo -mv=5e  ;;
2880                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2881                 esac
2882                 ;;
2883             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2884             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2885             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2886             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2887             -msoft-float)   echo --float_support=vfplib       ;;
2888             -O[0-3]|-mf=*)  echo $flag                        ;;
2889             -g)             echo -g -mn                       ;;
2890             -pds=*)         echo $flag                        ;;
2891             -D*|-I*)        echo $flag                        ;;
2892             --gcc|--abi=*)  echo $flag                        ;;
2893             -me)            echo $flag                        ;;
2894         esac
2895     done
2896 }
2897
2898 probe_cc(){
2899     pfx=$1
2900     _cc=$2
2901
2902     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2903     unset _ld_o _ldflags _ld_lib _ld_path
2904     unset _depflags _DEPCMD _DEPFLAGS
2905     _flags_filter=echo
2906
2907     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2908         _type=llvm_gcc
2909         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2910         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2911         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2912         _cflags_speed='-O3'
2913         _cflags_size='-Os'
2914     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2915         _type=gcc
2916         gcc_version=$($_cc --version | head -n1)
2917         gcc_basever=$($_cc -dumpversion)
2918         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2919         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2920         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2921         if ! $_cc -dumpversion | grep -q '^2\.'; then
2922             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2923         fi
2924         _cflags_speed='-O3'
2925         _cflags_size='-Os'
2926     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2927         _type=icc
2928         _ident=$($_cc --version | head -n1)
2929         _depflags='-MMD'
2930         _cflags_speed='-O3'
2931         _cflags_size='-Os'
2932         _cflags_noopt='-O1'
2933     elif $_cc -v 2>&1 | grep -q xlc; then
2934         _type=xlc
2935         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2936         _cflags_speed='-O5'
2937         _cflags_size='-O5 -qcompact'
2938     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2939         _type=ccc
2940         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2941         _DEPFLAGS='-M'
2942         _cflags_speed='-fast'
2943         _cflags_size='-O1'
2944         _flags_filter=ccc_flags
2945     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2946         test -d "$sysroot" || die "No valid sysroot specified."
2947         _type=armcc
2948         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
2949         armcc_conf="$PWD/armcc.conf"
2950         $_cc --arm_linux_configure                 \
2951              --arm_linux_config_file="$armcc_conf" \
2952              --configure_sysroot="$sysroot"        \
2953              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2954              die "Error creating armcc configuration file."
2955         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2956         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2957         as_default="${cross_prefix}gcc"
2958         _depflags='-MMD'
2959         _cflags_speed='-O3'
2960         _cflags_size='-Os'
2961     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2962         _type=tms470
2963         _ident=$($_cc -version | head -n1 | tr -s ' ')
2964         _flags='--gcc --abi=eabi -me'
2965         _cc_e='-ppl -fe=$@'
2966         _cc_o='-fe=$@'
2967         _depflags='-ppa -ppd=$(@:.o=.d)'
2968         _cflags_speed='-O3 -mf=5'
2969         _cflags_size='-O3 -mf=2'
2970         _flags_filter=tms470_flags
2971     elif $_cc -v 2>&1 | grep -q clang; then
2972         _type=clang
2973         _ident=$($_cc --version | head -n1)
2974         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2975         _cflags_speed='-O3'
2976         _cflags_size='-Os'
2977     elif $_cc -V 2>&1 | grep -q Sun; then
2978         _type=suncc
2979         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2980         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2981         _DEPFLAGS='-xM1 -xc99'
2982         _ldflags='-std=c99'
2983         _cflags_speed='-O5'
2984         _cflags_size='-O5 -xspace'
2985         _flags_filter=suncc_flags
2986     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2987         _type=pathscale
2988         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2989         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2990         _cflags_speed='-O2'
2991         _cflags_size='-Os'
2992         _flags_filter='filter_out -Wdisabled-optimization'
2993     elif $_cc -v 2>&1 | grep -q Open64; then
2994         _type=open64
2995         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2996         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2997         _cflags_speed='-O2'
2998         _cflags_size='-Os'
2999         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3000     elif $_cc -V 2>&1 | grep -q Portland; then
3001         _type=pgi
3002         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3003         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3004         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3005         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3006         _cflags_noopt="-O1"
3007         _flags_filter=pgi_flags
3008     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3009         _type=armasm
3010         _ident=$($_cc | head -n1)
3011         # 4509: "This form of conditional instruction is deprecated"
3012         _flags="-nologo -ignore 4509"
3013         _flags_filter=armasm_flags
3014     elif $_cc 2>&1 | grep -q Microsoft; then
3015         _type=msvc
3016         _ident=$($_cc 2>&1 | head -n1)
3017         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3018         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3019         _cflags_speed="-O2"
3020         _cflags_size="-O1"
3021         if $_cc 2>&1 | grep -q Linker; then
3022             _ld_o='-out:$@'
3023         else
3024             _ld_o='-Fe$@'
3025         fi
3026         _cc_o='-Fo$@'
3027         _cc_e='-P -Fi$@'
3028         _flags_filter=msvc_flags
3029         _ld_lib='lib%.a'
3030         _ld_path='-libpath:'
3031         _flags='-nologo'
3032         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3033     elif $_cc 2>&1 | grep -q Intel; then
3034         _type=icl
3035         _ident=$($_cc 2>&1 | head -n1)
3036         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3037         # Not only is O3 broken on 13.x+ but it is slower on all previous
3038         # versions (tested) as well.
3039         _cflags_speed="-O2"
3040         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3041         if $_cc 2>&1 | grep -q Linker; then
3042             _ld_o='-out:$@'
3043         else
3044             _ld_o='-Fe$@'
3045         fi
3046         _cc_o='-Fo$@'
3047         _cc_e='-P'
3048         _flags_filter=icl_flags
3049         _ld_lib='lib%.a'
3050         _ld_path='-libpath:'
3051         # -Qdiag-error to make icl error when seeing certain unknown arguments
3052         _flags='-nologo -Qdiag-error:4044,10157'
3053         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3054         # with MSVC which enables it by default.
3055         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3056     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3057         _type=cparser
3058         _ident=$($_cc --version | head -n1)
3059         _depflags='-MMD'
3060         _cflags_speed='-O4'
3061         _cflags_size='-O2'
3062         _flags_filter=cparser_flags
3063     fi
3064
3065     eval ${pfx}_type=\$_type
3066     eval ${pfx}_ident=\$_ident
3067 }
3068
3069 set_ccvars(){
3070     eval ${1}_C=\${_cc_c-\${${1}_C}}
3071     eval ${1}_E=\${_cc_e-\${${1}_E}}
3072     eval ${1}_O=\${_cc_o-\${${1}_O}}
3073
3074     if [ -n "$_depflags" ]; then
3075         eval ${1}_DEPFLAGS=\$_depflags
3076     else
3077         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3078         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3079         eval DEP${1}FLAGS=\$_flags
3080     fi
3081 }
3082
3083 probe_cc cc "$cc"
3084 cflags_filter=$_flags_filter
3085 cflags_speed=$_cflags_speed
3086 cflags_size=$_cflags_size
3087 cflags_noopt=$_cflags_noopt
3088 add_cflags $_flags $_cflags
3089 cc_ldflags=$_ldflags
3090 set_ccvars CC
3091
3092 probe_cc hostcc "$host_cc"
3093 host_cflags_filter=$_flags_filter
3094 add_host_cflags  $_flags $_cflags
3095 set_ccvars HOSTCC
3096
3097 test -n "$cc_type" && enable $cc_type ||
3098     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3099
3100 : ${as_default:=$cc}
3101 : ${dep_cc_default:=$cc}
3102 : ${ld_default:=$cc}
3103 : ${host_ld_default:=$host_cc}
3104 set_default ar as dep_cc ld host_ld
3105
3106 probe_cc as "$as"
3107 asflags_filter=$_flags_filter
3108 add_asflags $_flags $_cflags
3109 set_ccvars AS
3110
3111 probe_cc ld "$ld"
3112 ldflags_filter=$_flags_filter
3113 add_ldflags $_flags $_ldflags
3114 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3115 LD_O=${_ld_o-$LD_O}
3116 LD_LIB=${_ld_lib-$LD_LIB}
3117 LD_PATH=${_ld_path-$LD_PATH}
3118
3119 probe_cc hostld "$host_ld"
3120 host_ldflags_filter=$_flags_filter
3121 add_host_ldflags $_flags $_ldflags
3122 HOSTLD_O=${_ld_o-$HOSTLD_O}
3123
3124 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3125     probe_cc depcc "$dep_cc"
3126     CCDEP=${_DEPCMD:-$DEPCMD}
3127     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3128     DEPCCFLAGS=$_flags
3129 fi
3130
3131 if $ar 2>&1 | grep -q Microsoft; then
3132     arflags="-nologo"
3133     ar_o='-out:$@'
3134 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3135     arflags="rq"
3136     ar_o='$@'
3137 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3138     arflags='-Xany -r -c'
3139     ar_o='$@'
3140 else
3141     arflags="rc"
3142     ar_o='$@'
3143 fi
3144
3145 add_cflags $extra_cflags
3146 add_asflags $extra_cflags
3147
3148 if test -n "$sysroot"; then
3149     case "$cc_type" in
3150         gcc|llvm_gcc|clang)
3151             add_cppflags --sysroot="$sysroot"
3152             add_ldflags --sysroot="$sysroot"
3153         ;;
3154         tms470)
3155             add_cppflags -I"$sysinclude"
3156             add_ldflags  --sysroot="$sysroot"
3157         ;;
3158     esac
3159 fi
3160
3161 if test "$cpu" = host; then
3162     enabled cross_compile &&
3163         die "--cpu=host makes no sense when cross-compiling."
3164
3165     case "$cc_type" in
3166         gcc|llvm_gcc)
3167             check_native(){
3168                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3169                 sed -n "/cc1.*$1=/{
3170                             s/.*$1=\\([^ ]*\\).*/\\1/
3171                             p
3172                             q
3173                         }" $TMPE
3174             }
3175             cpu=$(check_native -march || check_native -mcpu)
3176         ;;
3177     esac
3178
3179     test "${cpu:-host}" = host &&
3180         die "--cpu=host not supported with compiler $cc"
3181 fi
3182
3183 # Deal with common $arch aliases
3184 case "$arch" in
3185     aarch64|arm64)
3186         arch="aarch64"
3187     ;;
3188     arm*)
3189         arch="arm"
3190     ;;
3191     mips*|IP*)
3192         arch="mips"
3193     ;;
3194     parisc*|hppa*)
3195         arch="parisc"
3196     ;;
3197     "Power Macintosh"|ppc*|powerpc*)
3198         arch="ppc"
3199     ;;
3200     s390|s390x)
3201         arch="s390"
3202     ;;
3203     sh4|sh)
3204         arch="sh4"
3205     ;;
3206     sun4u|sparc*)
3207         arch="sparc"
3208     ;;
3209     tilegx|tile-gx)
3210         arch="tilegx"
3211     ;;
3212     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3213         arch="x86"
3214     ;;
3215 esac
3216
3217 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3218 enable $arch
3219
3220 # Add processor-specific flags
3221 if enabled aarch64; then
3222
3223     case $cpu in
3224         armv*)
3225             cpuflags="-march=$cpu"
3226         ;;
3227         *)
3228             cpuflags="-mcpu=$cpu"
3229         ;;
3230     esac
3231
3232 elif enabled alpha; then
3233
3234     cpuflags="-mcpu=$cpu"
3235
3236 elif enabled arm; then
3237
3238     check_arm_arch() {
3239         check_cpp_condition stddef.h \
3240             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3241             $cpuflags
3242     }
3243
3244     probe_arm_arch() {
3245         if   check_arm_arch 4;        then echo armv4;
3246         elif check_arm_arch 4T;       then echo armv4t;
3247         elif check_arm_arch 5;        then echo armv5;
3248         elif check_arm_arch 5E;       then echo armv5e;
3249         elif check_arm_arch 5T;       then echo armv5t;
3250         elif check_arm_arch 5TE;      then echo armv5te;
3251         elif check_arm_arch 5TEJ;     then echo armv5te;
3252         elif check_arm_arch 6;        then echo armv6;
3253         elif check_arm_arch 6J;       then echo armv6j;
3254         elif check_arm_arch 6K;       then echo armv6k;
3255         elif check_arm_arch 6Z;       then echo armv6z;
3256         elif check_arm_arch 6ZK;      then echo armv6zk;
3257         elif check_arm_arch 6T2;      then echo armv6t2;
3258         elif check_arm_arch 7;        then echo armv7;
3259         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3260         elif check_arm_arch 7S;       then echo armv7-a;
3261         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3262         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3263         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3264         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3265         fi
3266     }
3267
3268     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3269
3270     case $cpu in
3271         armv*)
3272             cpuflags="-march=$cpu"
3273             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3274         ;;
3275         *)
3276             cpuflags="-mcpu=$cpu"
3277             case $cpu in
3278                 cortex-a*)                               subarch=armv7a  ;;
3279                 cortex-r*)                               subarch=armv7r  ;;
3280                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3281                 arm11*)                                  subarch=armv6   ;;
3282                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3283                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3284                 *)                             subarch=$(probe_arm_arch) ;;
3285             esac
3286         ;;
3287     esac
3288
3289     case "$subarch" in
3290         armv5t*)    enable fast_clz                ;;
3291         armv[6-8]*) enable fast_clz fast_unaligned ;;
3292     esac
3293
3294 elif enabled avr32; then
3295
3296     case $cpu in
3297         ap7[02]0[0-2])
3298             subarch="avr32_ap"
3299             cpuflags="-mpart=$cpu"
3300         ;;
3301         ap)
3302             subarch="avr32_ap"
3303             cpuflags="-march=$cpu"
3304         ;;
3305         uc3[ab]*)
3306             subarch="avr32_uc"
3307             cpuflags="-mcpu=$cpu"
3308         ;;
3309         uc)
3310             subarch="avr32_uc"
3311             cpuflags="-march=$cpu"
3312         ;;
3313     esac
3314
3315 elif enabled bfin; then
3316
3317     cpuflags="-mcpu=$cpu"
3318
3319 elif enabled mips; then
3320
3321     cpuflags="-march=$cpu"
3322
3323 elif enabled ppc; then
3324
3325     disable ldbrx
3326
3327     case $(tolower $cpu) in
3328         601|ppc601|powerpc601)
3329             cpuflags="-mcpu=601"
3330             disable altivec
3331         ;;
3332         603*|ppc603*|powerpc603*)
3333             cpuflags="-mcpu=603"
3334             disable altivec
3335         ;;
3336         604*|ppc604*|powerpc604*)
3337             cpuflags="-mcpu=604"
3338             disable altivec
3339         ;;
3340         g3|75*|ppc75*|powerpc75*)
3341             cpuflags="-mcpu=750"
3342             disable altivec
3343         ;;
3344         g4|745*|ppc745*|powerpc745*)
3345             cpuflags="-mcpu=7450"
3346             disable vsx
3347         ;;
3348         74*|ppc74*|powerpc74*)
3349             cpuflags="-mcpu=7400"
3350             disable vsx
3351         ;;
3352         g5|970|ppc970|powerpc970)
3353             cpuflags="-mcpu=970"
3354             disable vsx
3355         ;;
3356         power[3-6]*)
3357             cpuflags="-mcpu=$cpu"
3358             disable vsx
3359         ;;
3360         power[7-8]*)
3361             cpuflags="-mcpu=$cpu"
3362             enable ldbrx
3363         ;;
3364         cell)
3365             cpuflags="-mcpu=cell"
3366             enable ldbrx
3367             disable vsx
3368         ;;
3369         e500mc)
3370             cpuflags="-mcpu=e500mc"
3371             disable altivec
3372         ;;
3373         e500v2)
3374             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3375             disable altivec
3376             disable dcbzl
3377         ;;
3378         e500)
3379             cpuflags="-mcpu=8540 -mhard-float"
3380             disable altivec
3381             disable dcbzl
3382         ;;
3383     esac
3384
3385 elif enabled sparc; then
3386
3387     case $cpu in
3388         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3389             cpuflags="-mcpu=$cpu"
3390         ;;
3391         ultrasparc*|niagara[234])
3392             cpuflags="-mcpu=$cpu"
3393         ;;
3394     esac
3395
3396 elif enabled x86; then
3397
3398     case $cpu in
3399         i[345]86|pentium)
3400             cpuflags="-march=$cpu"
3401             disable i686
3402             disable mmx
3403         ;;
3404         # targets that do NOT support nopl and conditional mov (cmov)
3405         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3406             cpuflags="-march=$cpu"
3407             disable i686
3408         ;;
3409         # targets that do support nopl and conditional mov (cmov)
3410         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3411             cpuflags="-march=$cpu"
3412             enable i686
3413             enable fast_cmov
3414         ;;
3415         # targets that do support conditional mov but on which it's slow
3416         pentium4|pentium4m|prescott|nocona)
3417             cpuflags="-march=$cpu"
3418             enable i686
3419             disable fast_cmov
3420         ;;
3421     esac
3422
3423 fi
3424
3425 if [ "$cpu" != generic ]; then
3426     add_cflags  $cpuflags
3427     add_asflags $cpuflags
3428 fi
3429
3430 # compiler sanity check
3431 check_exec <<EOF
3432 int main(void){ return 0; }
3433 EOF
3434 if test "$?" != 0; then
3435     echo "$cc is unable to create an executable file."
3436     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3437         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3438         echo "Only do this if you know what cross compiling means."
3439     fi
3440     die "C compiler test failed."
3441 fi
3442
3443 add_cppflags -D_ISOC99_SOURCE
3444 check_cflags -std=c99
3445 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3446 #include <stdlib.h>
3447 EOF
3448 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3449 #include <stdlib.h>
3450 EOF
3451
3452 add_host_cppflags -D_ISOC99_SOURCE
3453 check_host_cflags -std=c99
3454 check_host_cflags -Wall
3455 check_host_cflags -O3
3456
3457 check_64bit(){
3458     arch32=$1
3459     arch64=$2
3460     expr=$3
3461     check_code cc "" "int test[2*($expr) - 1]" &&
3462         subarch=$arch64 || subarch=$arch32
3463 }
3464
3465 case "$arch" in
3466     aarch64|alpha|ia64)
3467         spic=$shared
3468     ;;
3469     mips)
3470         check_64bit mips mips64 '_MIPS_SIM > 1'
3471         spic=$shared
3472     ;;
3473     parisc)
3474         check_64bit parisc parisc64 'sizeof(void *) > 4'
3475         spic=$shared
3476     ;;
3477     ppc)
3478         check_64bit ppc ppc64 'sizeof(void *) > 4'
3479         spic=$shared
3480     ;;
3481     s390)
3482         check_64bit s390 s390x 'sizeof(void *) > 4'
3483         spic=$shared
3484     ;;
3485     sparc)
3486         check_64bit sparc sparc64 'sizeof(void *) > 4'
3487         spic=$shared
3488     ;;
3489     x86)
3490         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3491         if test "$subarch" = "x86_64"; then
3492             spic=$shared
3493         fi
3494     ;;
3495 esac
3496
3497 enable $subarch
3498 enabled spic && enable_weak pic
3499
3500 # OS specific
3501 case $target_os in
3502     aix)
3503         SHFLAGS=-shared
3504         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3505         enabled shared && add_ldflags -Wl,-brtl
3506         ;;
3507     android)
3508         disable symver
3509         enable section_data_rel_ro
3510         SLIB_INSTALL_NAME='$(SLIBNAME)'
3511         SLIB_INSTALL_LINKS=
3512         # soname not set on purpose
3513         SHFLAGS=-shared
3514         ;;
3515     haiku)
3516         prefix_default="/boot/common"
3517         network_extralibs="-lnetwork"
3518         host_libs=
3519         ;;
3520     sunos)
3521         SHFLAGS='-shared -Wl,-h,$$(@F)'
3522         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3523         network_extralibs="-lsocket -lnsl"
3524         # When using suncc to build, the Solaris linker will mark
3525         # an executable with each instruction set encountered by
3526         # the Solaris assembler.  As our libraries contain their own
3527         # guards for processor-specific code, instead suppress
3528         # generation of the HWCAPS ELF section on Solaris x86 only.
3529         enabled_all suncc x86 &&
3530             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3531             add_ldflags -Wl,-M,mapfile
3532         nm_default='nm -P -g'
3533         ;;
3534     netbsd)
3535         disable symver
3536         oss_indev_extralibs="-lossaudio"
3537         oss_outdev_extralibs="-lossaudio"
3538         ;;
3539     openbsd|bitrig)
3540         disable symver
3541         SHFLAGS='-shared'
3542         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3543         SLIB_INSTALL_LINKS=
3544         oss_indev_extralibs="-lossaudio"
3545         oss_outdev_extralibs="-lossaudio"
3546         ;;
3547     dragonfly)
3548         disable symver
3549         ;;
3550     freebsd)
3551         ;;
3552     bsd/os)
3553         add_extralibs -lpoll -lgnugetopt
3554         ;;
3555     darwin)
3556         enabled ppc && add_asflags -force_cpusubtype_ALL
3557         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3558         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3559         add_ldflags -Wl,-dynamic,-search_paths_first
3560         SLIBSUF=".dylib"
3561         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3562         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3563         objformat="macho"
3564         enabled x86_64 && objformat="macho64"
3565         enabled_any pic shared ||
3566             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3567         ;;
3568     mingw32*)
3569         if test $target_os = "mingw32ce"; then
3570             disable network
3571         else
3572             target_os=mingw32
3573         fi
3574         LIBTARGET=i386
3575         if enabled x86_64; then
3576             LIBTARGET="i386:x86-64"
3577         elif enabled arm; then
3578             LIBTARGET=arm-wince
3579         fi
3580         check_ldflags -Wl,--nxcompat
3581         check_ldflags -Wl,--dynamicbase
3582         shlibdir_default="$bindir_default"
3583         SLIBPREF=""
3584         SLIBSUF=".dll"
3585         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3586         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3587         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3588         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3589         SLIB_INSTALL_LINKS=
3590         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3591         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3592         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3593         objformat="win32"
3594         dlltool="${cross_prefix}dlltool"
3595         ranlib=:
3596         enable dos_paths
3597         ;;
3598     win32|win64)
3599         disable symver
3600         if enabled shared; then
3601             # Link to the import library instead of the normal static library
3602             # for shared libs.
3603             LD_LIB='%.lib'
3604             # Cannot build both shared and static libs with MSVC or icl.
3605             disable static
3606         fi
3607         shlibdir_default="$bindir_default"
3608         SLIBPREF=""
3609         SLIBSUF=".dll"
3610         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3611         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3612         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3613         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3614         SLIB_INSTALL_LINKS=
3615         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3616         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3617         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3618         objformat="win32"
3619         ranlib=:
3620         enable dos_paths
3621         ;;
3622     cygwin*)
3623         target_os=cygwin
3624         shlibdir_default="$bindir_default"
3625         SLIBPREF="cyg"
3626         SLIBSUF=".dll"
3627         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3628         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3629         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3630         SLIB_INSTALL_LINKS=
3631         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3632         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3633         objformat="win32"
3634         enable dos_paths
3635         ;;
3636     *-dos|freedos|opendos)
3637         network_extralibs="-lsocket"
3638         objformat="coff"
3639         enable dos_paths
3640         add_cppflags -U__STRICT_ANSI__
3641         ;;
3642     linux)
3643         enable dv1394
3644         enable section_data_rel_ro
3645         ;;
3646     irix*)
3647         target_os=irix
3648         ranlib="echo ignoring ranlib"
3649         ;;
3650     os/2*)
3651         ln_s="cp -f"
3652         objformat="aout"
3653         add_cppflags -D_GNU_SOURCE
3654         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3655         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3656         LIBSUF="_s.a"
3657         SLIBPREF=""
3658         SLIBSUF=".dll"
3659         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3660         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3661         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3662             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3663             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3664             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3665             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3666             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3667         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3668             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3669         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3670         enable dos_paths
3671         ;;
3672     gnu/kfreebsd)
3673         add_cppflags -D_BSD_SOURCE
3674         ;;
3675     gnu)
3676         ;;
3677     qnx)
3678         add_cppflags -D_QNX_SOURCE
3679         network_extralibs="-lsocket"
3680         ;;
3681     symbian)
3682         SLIBSUF=".dll"
3683         enable dos_paths
3684         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3685         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3686         add_ldflags -Wl,--target1-abs,--no-undefined \
3687                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3688                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3689         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3690                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3691                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3692         ;;
3693     osf1)
3694         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3695         ;;
3696     minix)
3697         ;;
3698     plan9)
3699         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3700                      -D_REENTRANT_SOURCE        \
3701                      -D_RESEARCH_SOURCE         \
3702                      -DFD_SETSIZE=96            \
3703                      -DHAVE_SOCK_OPTS
3704         add_compat strtod.o strtod=avpriv_strtod
3705         network_extralibs='-lbsd'
3706         exeobjs=compat/plan9/main.o
3707         cp_f='cp'
3708         ;;
3709     none)
3710         ;;
3711     *)
3712         die "Unknown OS '$target_os'."
3713         ;;
3714 esac
3715
3716 # determine libc flavour
3717
3718 probe_libc(){
3719     pfx=$1
3720     pfx_no_=${pfx%_}
3721     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3722     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3723         eval ${pfx}libc_type=uclibc
3724         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3725     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3726         eval ${pfx}libc_type=glibc
3727         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3728     # MinGW headers can be installed on Cygwin, so check for newlib first.
3729     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3730         eval ${pfx}libc_type=newlib
3731         add_${pfx}cppflags -U__STRICT_ANSI__
3732     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3733     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3734         eval ${pfx}libc_type=mingw64
3735         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3736         eval test \$${pfx_no_}cc_type = "gcc" &&
3737             add_${pfx}cppflags -D__printf__=__gnu_printf__
3738     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3739          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3740         eval ${pfx}libc_type=mingw32
3741         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3742             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3743             die "ERROR: MinGW32 runtime version must be >= 3.15."
3744         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3745         eval test \$${pfx_no_}cc_type = "gcc" &&
3746             add_${pfx}cppflags -D__printf__=__gnu_printf__
3747     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3748         eval ${pfx}libc_type=msvcrt
3749         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
3750             if [ "$pfx" = host_ ]; then
3751                 add_host_cppflags -Dsnprintf=_snprintf
3752             else
3753                 add_compat strtod.o strtod=avpriv_strtod
3754                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3755                                              _snprintf=avpriv_snprintf  \
3756                                              vsnprintf=avpriv_vsnprintf
3757             fi
3758         fi
3759         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3760         # 0x601 by default unless something else is set by the user.
3761         # This can easily lead to us detecting functions only present
3762         # in such new versions and producing binaries requiring windows 7.0.
3763         # Therefore explicitly set the default to XP unless the user has
3764         # set something else on the command line.
3765         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3766             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3767     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3768         eval ${pfx}libc_type=klibc
3769     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3770         eval ${pfx}libc_type=bionic
3771     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3772         eval ${pfx}libc_type=solaris
3773         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3774     else
3775         eval ${pfx}libc_type=default
3776         add_${pfx}cppflags -D_DEFAULT_SOURCE
3777     fi
3778 }
3779
3780 probe_libc
3781 test -n "$libc_type" && enable libc_$libc_type
3782 probe_libc host_
3783 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3784
3785 case $libc_type in
3786     bionic)
3787         add_compat strtod.o strtod=avpriv_strtod
3788         ;;
3789 esac
3790
3791 # hacks for compiler/libc/os combinations
3792
3793 if enabled_all tms470 libc_glibc; then
3794     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3795     add_cppflags -D__USER_LABEL_PREFIX__=
3796     add_cppflags -D__builtin_memset=memset
3797     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3798     add_cflags   -pds=48    # incompatible redefinition of macro
3799 fi
3800
3801 if enabled_all ccc libc_glibc; then
3802     add_ldflags -Wl,-z,now  # calls to libots crash without this
3803 fi
3804
3805 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3806     add_cppflags '-I\$(SRC_PATH)/compat/float'
3807
3808 esc(){
3809     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3810 }
3811
3812 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3813
3814 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3815
3816 set_default $PATHS_LIST
3817 set_default nm
3818
3819 # we need to build at least one lib type
3820 if ! enabled_any static shared; then
3821     cat <<EOF
3822 At least one library type must be built.
3823 Specify --enable-static to build the static libraries or --enable-shared to
3824 build the shared libraries as well. To only build the shared libraries specify
3825 --disable-static in addition to --enable-shared.
3826 EOF
3827     exit 1;
3828 fi
3829
3830 die_license_disabled() {
3831     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3832 }
3833
3834 die_license_disabled gpl libcdio
3835 die_license_disabled gpl libx264
3836 die_license_disabled gpl libx265
3837 die_license_disabled gpl libxavs
3838 die_license_disabled gpl libxvid
3839 die_license_disabled gpl x11grab
3840
3841 die_license_disabled nonfree libfaac
3842 die_license_disabled nonfree libfdk_aac
3843 die_license_disabled nonfree nvenc
3844 die_license_disabled nonfree openssl
3845
3846 die_license_disabled version3 libopencore_amrnb
3847 die_license_disabled version3 libopencore_amrwb
3848 die_license_disabled version3 libvo_aacenc
3849 die_license_disabled version3 libvo_amrwbenc
3850
3851 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3852
3853 disabled optimizations || check_cflags -fomit-frame-pointer
3854
3855 enable_weak_pic() {
3856     disabled pic && return
3857     enable pic
3858     add_cppflags -DPIC
3859     case "$target_os" in
3860     mingw*|cygwin*)
3861         ;;
3862     *)
3863         add_cflags -fPIC
3864         ;;
3865     esac
3866     add_asflags  -fPIC
3867 }
3868
3869 enabled pic && enable_weak_pic
3870
3871 check_cc <<EOF || die "Symbol mangling check failed."
3872 int ff_extern;
3873 EOF
3874 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3875 extern_prefix=${sym%%ff_extern*}
3876
3877 check_cc <<EOF && enable_weak inline_asm
3878 void foo(void) { __asm__ volatile ("" ::); }
3879 EOF
3880
3881 _restrict=
3882 for restrict_keyword in restrict __restrict__ __restrict; do
3883     check_cc <<EOF && _restrict=$restrict_keyword && break
3884 void foo(char * $restrict_keyword p);
3885 EOF
3886 done
3887
3888 check_cc <<EOF && enable pragma_deprecated
3889 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3890 EOF
3891
3892 check_cc <<EOF && enable attribute_packed
3893 struct { int x; } __attribute__((packed)) x;
3894 EOF
3895
3896 check_cc <<EOF && enable attribute_may_alias
3897 union { int x; } __attribute__((may_alias)) x;
3898 EOF
3899
3900 check_cc <<EOF || die "endian test failed"
3901 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3902 EOF
3903 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3904
3905 check_gas() {
3906     log "check_gas using '$as' as AS"
3907     # :vararg is used on aarch64, arm and ppc altivec
3908     check_as <<EOF || return 1
3909 .macro m n, y:vararg=0
3910 \n: .int \y
3911 .endm
3912 m x
3913 EOF
3914     # .altmacro is only used in arm asm
3915     ! enabled arm || check_as <<EOF || return 1
3916 .altmacro
3917 EOF
3918     enable gnu_as
3919     return 0
3920 }
3921
3922 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
3923     nogas=:
3924     enabled_any arm aarch64 && nogas=die
3925     enabled_all ppc altivec && nogas=warn
3926     as_noop=-v
3927
3928     case $as_type in
3929         arm*) gaspp_as_type=armasm; as_noop=-h ;;
3930         gcc)  gaspp_as_type=gas ;;
3931         *)    gaspp_as_type=$as_type ;;
3932     esac
3933
3934     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
3935
3936     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
3937         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
3938
3939     if ! check_gas ; then
3940         as=${gas:=$as}
3941         check_gas || \
3942             $nogas "GNU assembler not found, install/update gas-preprocessor"
3943     fi
3944
3945     check_as <<EOF && enable as_func
3946 .func test
3947 .endfunc
3948 EOF
3949 fi
3950
3951 check_inline_asm inline_asm_labels '"1:\n"'
3952
3953 if enabled aarch64; then
3954     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3955     # internal assembler in clang 3.3 does not support this instruction
3956     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3957     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3958
3959     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3960
3961 elif enabled alpha; then
3962
3963     check_cflags -mieee
3964
3965 elif enabled arm; then
3966
3967     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3968     enabled thumb && check_cflags -mthumb || check_cflags -marm
3969
3970     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3971         enable vfp_args
3972     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3973         case "${cross_prefix:-$cc}" in
3974             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3975             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3976 __asm__ (".eabi_attribute 28, 1");
3977 int main(void) { return 0; }
3978 EOF
3979         esac
3980         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3981     fi
3982
3983     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3984     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3985     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3986     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3987     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3988     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3989
3990     [ $target_os = linux ] || [ $target_os = android ] ||
3991         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3992             $ARCH_EXT_LIST_ARM
3993
3994     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3995
3996     check_as <<EOF && enable as_dn_directive
3997 ra .dn d0.i16
3998 .unreq ra
3999 EOF
4000
4001     # llvm's integrated assembler supports .object_arch from llvm 3.5
4002     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4003 .object_arch armv4
4004 EOF
4005
4006     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4007
4008 elif enabled mips; then
4009
4010     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4011
4012 elif enabled parisc; then
4013
4014     if enabled gcc; then
4015         case $($cc -dumpversion) in
4016             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4017         esac
4018     fi
4019
4020 elif enabled ppc; then
4021
4022     enable local_aligned_8 local_aligned_16
4023
4024     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4025     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4026     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4027     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4028
4029     # AltiVec flags: The FSF version of GCC differs from the Apple version
4030     if enabled altivec; then
4031         check_cflags -maltivec -mabi=altivec &&
4032         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4033         check_cflags -faltivec
4034
4035         # check if our compiler supports Motorola AltiVec C API
4036         check_cc <<EOF || disable altivec
4037 $inc_altivec_h
4038 int main(void) {
4039     vector signed int v1 = (vector signed int) { 0 };
4040     vector signed int v2 = (vector signed int) { 1 };
4041     v1 = vec_add(v1, v2);
4042     return 0;
4043 }
4044 EOF
4045
4046         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4047     fi
4048
4049     if enabled vsx; then
4050         check_cflags -mvsx &&
4051         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4052     fi
4053
4054     if enabled power8; then
4055         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4056     fi
4057
4058 elif enabled x86; then
4059
4060     check_builtin rdtsc    intrin.h   "__rdtsc()"
4061     check_builtin mm_empty mmintrin.h "_mm_empty()"
4062
4063     enable local_aligned_8 local_aligned_16
4064
4065     # check whether EBP is available on x86
4066     # As 'i' is stored on the stack, this program will crash
4067     # if the base pointer is used to access it because the
4068     # base pointer is cleared in the inline assembly code.
4069     check_exec_crash <<EOF && enable ebp_available
4070 volatile int i=0;
4071 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4072 return i;
4073 EOF
4074
4075     # check whether EBX is available on x86
4076     check_inline_asm ebx_available '""::"b"(0)' &&
4077         check_inline_asm ebx_available '"":::"%ebx"'
4078
4079     # check whether xmm clobbers are supported
4080     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4081
4082     # check whether binutils is new enough to compile SSSE3/MMXEXT
4083     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4084     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4085
4086     if ! disabled_any asm mmx yasm; then
4087         if check_cmd $yasmexe --version; then
4088             enabled x86_64 && yasm_extra="-m amd64"
4089             yasm_debug="-g dwarf2"
4090         elif check_cmd nasm -v; then
4091             yasmexe=nasm
4092             yasm_debug="-g -F dwarf"
4093             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4094         fi
4095
4096         YASMFLAGS="-f $objformat $yasm_extra"
4097         enabled pic               && append YASMFLAGS "-DPIC"
4098         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4099         case "$objformat" in
4100             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4101         esac
4102
4103         check_yasm "movbe ecx, [5]" && enable yasm ||
4104             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4105         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4106         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4107         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4108         check_yasm "CPU amdnop" || disable cpunop
4109     fi
4110
4111     case "$cpu" in
4112         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4113             disable fast_clz
4114         ;;
4115     esac
4116
4117 fi
4118
4119 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4120
4121 check_ldflags -Wl,--as-needed
4122
4123 if check_func dlopen; then
4124     ldl=
4125 elif check_func dlopen -ldl; then
4126     ldl=-ldl
4127 fi
4128
4129 if ! disabled network; then
4130     check_func getaddrinfo $network_extralibs
4131     check_func getservbyport $network_extralibs
4132     check_func inet_aton $network_extralibs
4133
4134     check_type netdb.h "struct addrinfo"
4135     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4136     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4137     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4138     check_type poll.h "struct pollfd"
4139     check_type netinet/sctp.h "struct sctp_event_subscribe"
4140     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4141     check_type netinet/in.h "struct sockaddr_in6"
4142     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4143     check_type "sys/types.h sys/socket.h" socklen_t
4144
4145     # Prefer arpa/inet.h over winsock2
4146     if check_header arpa/inet.h ; then
4147         check_func closesocket
4148     elif check_header winsock2.h ; then
4149         check_func_headers winsock2.h closesocket -lws2 &&
4150             network_extralibs="-lws2" ||
4151         { check_func_headers winsock2.h closesocket -lws2_32 &&
4152             network_extralibs="-lws2_32"; } || disable winsock2_h network
4153         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4154
4155         check_type ws2tcpip.h socklen_t
4156         check_type ws2tcpip.h "struct addrinfo"
4157         check_type ws2tcpip.h "struct group_source_req"
4158         check_type ws2tcpip.h "struct ip_mreq_source"
4159         check_type ws2tcpip.h "struct ipv6_mreq"
4160         check_type winsock2.h "struct pollfd"
4161         check_struct winsock2.h "struct sockaddr" sa_len
4162         check_type ws2tcpip.h "struct sockaddr_in6"
4163         check_type ws2tcpip.h "struct sockaddr_storage"
4164     else
4165         disable network
4166     fi
4167 fi
4168
4169 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4170 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4171 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4172 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4173
4174 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4175 check_func  ${malloc_prefix}memalign            && enable memalign
4176 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4177
4178 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4179     check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4180
4181 check_func  fcntl
4182 check_func  fork
4183 check_func  gethrtime
4184 check_func  getopt
4185 check_func  getrusage
4186 check_func  gettimeofday
4187 check_func  gmtime_r
4188 check_func  isatty
4189 check_func  localtime_r
4190 check_func  mach_absolute_time
4191 check_func  mkstemp
4192 check_func  mmap
4193 check_func  mprotect
4194 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4195 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4196 check_func  sched_getaffinity
4197 check_func  setrlimit
4198 check_func  strerror_r
4199 check_func  sysconf
4200 check_func  sysctl
4201 check_func  usleep
4202
4203 check_func_headers io.h setmode
4204 check_func_headers stdlib.h getenv
4205
4206 check_func_headers windows.h CoTaskMemFree -lole32
4207 check_func_headers windows.h GetProcessAffinityMask
4208 check_func_headers windows.h GetProcessTimes
4209 check_func_headers windows.h GetSystemTimeAsFileTime
4210 check_func_headers windows.h LoadLibrary
4211 check_func_headers windows.h MapViewOfFile
4212 check_func_headers windows.h SetConsoleTextAttribute
4213 check_func_headers windows.h Sleep
4214 check_func_headers windows.h VirtualAlloc
4215 check_struct windows.h "CONDITION_VARIABLE" Ptr
4216
4217 check_header direct.h
4218 check_header dlfcn.h
4219 check_header d3d11.h
4220 check_header dxva.h
4221 check_header dxva2api.h
4222 check_header io.h
4223 check_header mach/mach_time.h
4224 check_header malloc.h
4225 check_header poll.h
4226 check_header sys/mman.h
4227 check_header sys/param.h
4228 check_header sys/resource.h
4229 check_header sys/select.h
4230 check_header sys/time.h
4231 check_header sys/un.h
4232 check_header unistd.h
4233 check_header valgrind/valgrind.h
4234 check_header vdpau/vdpau.h
4235 check_header vdpau/vdpau_x11.h
4236 check_header VideoDecodeAcceleration/VDADecoder.h
4237 check_header windows.h
4238 check_header X11/extensions/XvMClib.h
4239
4240 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4241 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4242 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4243
4244 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4245
4246 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC"
4247 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4248 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0600
4249
4250 if ! disabled w32threads && ! enabled pthreads; then
4251     check_func_headers "windows.h process.h" _beginthreadex &&
4252         enable w32threads || disable w32threads
4253 fi
4254
4255 # check for some common methods of building with pthread support
4256 # do this before the optional library checks as some of them require pthreads
4257 if ! disabled pthreads && ! enabled w32threads; then
4258     enable pthreads
4259     if check_func pthread_join -pthread; then
4260         add_cflags -pthread
4261         add_extralibs -pthread
4262     elif check_func pthread_join -pthreads; then
4263         add_cflags -pthreads
4264         add_extralibs -pthreads
4265     elif check_func pthread_join -lpthreadGC2; then
4266         add_extralibs -lpthreadGC2
4267     elif check_lib pthread.h pthread_join -lpthread; then
4268         :
4269     elif ! check_func pthread_join; then
4270         disable pthreads
4271     fi
4272 fi
4273
4274 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4275 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4276
4277 check_lib math.h sin -lm && LIBM="-lm"
4278 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4279
4280 atan2f_args=2
4281 ldexpf_args=2
4282 powf_args=2
4283
4284 for func in $MATH_FUNCS; do
4285     eval check_mathfunc $func \${${func}_args:-1}
4286 done
4287
4288 # these are off by default, so fail if requested and not available
4289 enabled avisynth          && { check_lib2 "avisynth/avisynth_c.h windows.h" LoadLibrary ||
4290                                check_lib2 "avxsynth/avxsynth_c.h dlfcn.h" dlopen -ldl   ||
4291                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4292 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4293 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4294 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4295 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4296 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4297 enabled libfdk_aac        && require_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4298 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4299 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4300 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4301                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4302                                done || die "ERROR: libgsm not found"; }
4303 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4304 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
4305 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4306 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4307 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4308 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4309 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
4310 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4311                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4312 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4313 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4314 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4315 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4316 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
4317 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4318 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4319 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4320 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4321 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4322 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4323 enabled libvpx            && require_pkg_config "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version && {
4324     enabled libvpx_vp8_decoder && {
4325         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
4326             disable libvpx_vp8_decoder;
4327     }
4328     enabled libvpx_vp8_encoder && {
4329         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
4330             disable libvpx_vp8_encoder;
4331     }
4332     enabled libvpx_vp9_decoder && {
4333         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
4334             disable libvpx_vp9_decoder;
4335     }
4336     enabled libvpx_vp9_encoder && {
4337         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
4338             disable libvpx_vp9_encoder;
4339     }
4340     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
4341         die "libvpx enabled but no supported decoders found"
4342     fi
4343 }
4344 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4345 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4346 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4347                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4348                                die "ERROR: libx264 version must be >= 0.118."; }
4349 enabled libx265           && require_pkg_config x265 x265.h x265_encoder_encode &&
4350                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
4351                                die "ERROR: libx265 version must be >= 57."; }
4352 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4353 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4354 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4355                                 { ! enabled cross_compile && {
4356                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
4357                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
4358                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
4359                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
4360                                die "ERROR: mmal not found"; }
4361 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4362                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4363                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4364                                die "ERROR: openssl not found"; }
4365
4366 if enabled gnutls; then
4367     { check_lib2 gmp.h mpz_export -lgmp && enable gmp; } ||
4368     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4369 fi
4370
4371 # libdc1394 check
4372 if enabled libdc1394; then
4373     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
4374         enable libdc1394_2; } ||
4375     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4376         enable libdc1394_1; } ||
4377     die "ERROR: No version of libdc1394 found "
4378 fi
4379
4380 if enabled nvenc; then
4381     check_header cuda.h || die "ERROR: cuda.h not found.";
4382     check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found.";
4383     check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 5" ||
4384         die "ERROR: NVENC API version 4 or older is not supported";
4385 fi
4386
4387 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4388     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4389     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4390     enable sdl
4391 fi
4392
4393 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4394 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4395
4396 check_header linux/fb.h
4397 check_header linux/videodev2.h
4398 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4399
4400 check_header sys/videoio.h
4401
4402 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4403 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4404 # w32api 3.12 had it defined wrong
4405 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4406
4407 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4408 { check_header dev/bktr/ioctl_meteor.h &&
4409   check_header dev/bktr/ioctl_bt848.h; } ||
4410 { check_header machine/ioctl_meteor.h &&
4411   check_header machine/ioctl_bt848.h; } ||
4412 { check_header dev/video/meteor/ioctl_meteor.h &&
4413   check_header dev/video/bktr/ioctl_bt848.h; } ||
4414 check_header dev/ic/bt8xx.h
4415
4416 check_header sndio.h
4417 check_header sys/soundcard.h
4418 check_header soundcard.h
4419
4420 enabled_any alsa_indev alsa_outdev &&
4421     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4422
4423 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4424     check_func jack_port_get_latency_range -ljack
4425
4426 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4427
4428 if enabled libcdio; then
4429     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4430     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4431     die "ERROR: No usable libcdio/cdparanoia found"
4432 fi
4433
4434 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4435
4436 if enabled libxcb || enabled x11grab && ! disabled libxcb; then
4437     check_pkg_config xcb-shape xcb/shape.h xcb_shape_rectangles || {
4438         enabled libxcb && die "ERROR: libxcb not found";
4439     } && disable x11grab && enable libxcb
4440
4441     disabled libxcb_shm ||
4442         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
4443             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
4444         } && check_header sys/shm.h && enable libxcb_shm
4445
4446     disabled libxcb_xfixes ||
4447         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
4448             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
4449         } && enable libxcb_xfixes
4450
4451     add_cflags "$xcb_event_cflags $xcb_shm_cflags $xcb_xfixes_cflags"
4452     add_extralibs "$xcb_event_libs $xcb_shm_libs $xcb_xfixes_libs"
4453 fi
4454
4455 if enabled x11grab; then
4456     enabled xlib || die "ERROR: Xlib not found"
4457     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
4458     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
4459 fi
4460
4461 enabled vaapi && enabled xlib &&
4462     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
4463     enable vaapi_x11
4464
4465 enabled vdpau &&
4466     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4467     disable vdpau
4468
4469 enabled vdpau && enabled xlib &&
4470     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4471     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4472     enable vdpau_x11
4473
4474 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4475
4476 # add some useful compiler flags if supported
4477 check_cflags -Wdeclaration-after-statement
4478 check_cflags -Wall
4479 check_cflags -Wdisabled-optimization
4480 check_cflags -Wpointer-arith
4481 check_cflags -Wredundant-decls
4482 check_cflags -Wcast-qual
4483 check_cflags -Wwrite-strings
4484 check_cflags -Wtype-limits
4485 check_cflags -Wundef
4486 check_cflags -Wmissing-prototypes
4487 check_cflags -Wstrict-prototypes
4488 enabled extra_warnings && check_cflags -Winline
4489
4490 check_disable_warning(){
4491     warning_flag=-W${1#-Wno-}
4492     test_cflags $warning_flag && add_cflags $1
4493 }
4494
4495 check_disable_warning -Wno-parentheses
4496 check_disable_warning -Wno-switch
4497 check_disable_warning -Wno-format-zero-length
4498 check_disable_warning -Wno-pointer-sign
4499
4500 # add some linker flags
4501 check_ldflags -Wl,--warn-common
4502 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4503 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
4504 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4505
4506 # add some strip flags
4507 # -wN '..@*' is more selective than -x, but not available everywhere.
4508 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4509
4510 enabled neon_clobber_test &&
4511     check_ldflags -Wl,--wrap,avcodec_open2              \
4512                   -Wl,--wrap,avcodec_decode_audio4      \
4513                   -Wl,--wrap,avcodec_decode_video2      \
4514                   -Wl,--wrap,avcodec_decode_subtitle2   \
4515                   -Wl,--wrap,avcodec_encode_audio2      \
4516                   -Wl,--wrap,avcodec_encode_video2      \
4517                   -Wl,--wrap,avcodec_encode_subtitle    \
4518                   -Wl,--wrap,avresample_convert ||
4519     disable neon_clobber_test
4520
4521 enabled xmm_clobber_test &&
4522     check_ldflags -Wl,--wrap,avcodec_open2              \
4523                   -Wl,--wrap,avcodec_decode_audio4      \
4524                   -Wl,--wrap,avcodec_decode_video2      \
4525                   -Wl,--wrap,avcodec_decode_subtitle2   \
4526                   -Wl,--wrap,avcodec_encode_audio2      \
4527                   -Wl,--wrap,avcodec_encode_video2      \
4528                   -Wl,--wrap,avcodec_encode_subtitle    \
4529                   -Wl,--wrap,avresample_convert         \
4530                   -Wl,--wrap,sws_scale ||
4531     disable xmm_clobber_test
4532
4533 echo "X{};" > $TMPV
4534 if test_ldflags -Wl,--version-script,$TMPV; then
4535     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4536     check_cc <<EOF && enable symver_asm_label
4537 void ff_foo(void) __asm__ ("av_foo@VERSION");
4538 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4539 EOF
4540     check_cc <<EOF && enable symver_gnu_asm
4541 __asm__(".symver ff_foo,av_foo@VERSION");
4542 void ff_foo(void) {}
4543 EOF
4544 fi
4545
4546 if [ -z "$optflags" ]; then
4547     if enabled small; then
4548         optflags=$cflags_size
4549     elif enabled optimizations; then
4550         optflags=$cflags_speed
4551     else
4552         optflags=$cflags_noopt
4553     fi
4554 fi
4555
4556 check_optflags(){
4557     check_cflags "$@"
4558     enabled lto && check_ldflags "$@"
4559 }
4560
4561
4562 if enabled lto; then
4563     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4564     check_cflags  -flto
4565     check_ldflags -flto $cpuflags
4566 fi
4567
4568 check_optflags $optflags
4569 check_optflags -fno-math-errno
4570 check_optflags -fno-signed-zeros
4571
4572 if enabled icc; then
4573     # Just warnings, no remarks
4574     check_cflags -w1
4575     # -wd: Disable following warnings
4576     # 144, 167, 556: -Wno-pointer-sign
4577     # 1292: attribute "foo" ignored
4578     # 1419: external declaration in primary source file
4579     # 10006: ignoring unknown option -fno-signed-zeros
4580     # 10148: ignoring unknown option -Wno-parentheses
4581     # 10156: ignoring option '-W'; no argument required
4582     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4583     # 11030: Warning unknown option --as-needed
4584     # 10156: ignoring option '-export'; no argument required
4585     check_ldflags -wd10156,11030
4586     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4587     enable ebp_available
4588     if enabled x86_32; then
4589         icc_version=$($cc -dumpversion)
4590         test ${icc_version%%.*} -ge 11 &&
4591             check_cflags -falign-stack=maintain-16-byte ||
4592             disable aligned_stack
4593     fi
4594 elif enabled ccc; then
4595     # disable some annoying warnings
4596     add_cflags -msg_disable bitnotint
4597     add_cflags -msg_disable mixfuncvoid
4598     add_cflags -msg_disable nonstandcast
4599     add_cflags -msg_disable unsupieee
4600 elif enabled gcc; then
4601     check_optflags -fno-tree-vectorize
4602     check_cflags -Werror=implicit-function-declaration
4603     check_cflags -Werror=missing-prototypes
4604     check_cflags -Werror=return-type
4605     check_cflags -Werror=declaration-after-statement
4606     check_cflags -Werror=vla
4607     check_cflags -Werror=format-security
4608     check_cflags -fdiagnostics-color=auto
4609     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4610 elif enabled llvm_gcc; then
4611     check_cflags -mllvm -stack-alignment=16
4612 elif enabled clang; then
4613     check_cflags -mllvm -stack-alignment=16
4614     check_cflags -Qunused-arguments
4615     check_cflags -Werror=implicit-function-declaration
4616     check_cflags -Werror=missing-prototypes
4617     check_cflags -Werror=return-type
4618 elif enabled cparser; then
4619     add_cflags -Wno-missing-variable-declarations
4620     add_cflags -Wno-empty-statement
4621 elif enabled armcc; then
4622     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
4623     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
4624     # 2523: use of inline assembly is deprecated
4625     add_cflags -W${armcc_opt},--diag_suppress=2523
4626     add_cflags -W${armcc_opt},--diag_suppress=1207
4627     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4628     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4629     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4630     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4631 elif enabled tms470; then
4632     add_cflags -pds=824 -pds=837
4633     disable inline_asm
4634 elif enabled pathscale; then
4635     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4636 elif enabled_any msvc icl; then
4637     enabled x86_32 && disable aligned_stack
4638     enabled_all x86_32 debug && add_cflags -Oy-
4639     enabled debug && add_ldflags -debug
4640     enable pragma_deprecated
4641     if enabled icl; then
4642         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4643         # (correctly) on icl 13.x.
4644         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4645             add_cflags -Qansi-alias
4646         # icl will pass the inline asm tests but inline asm is currently
4647         # not supported (build will fail)
4648         disable inline_asm
4649     fi
4650     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
4651     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
4652 fi
4653
4654 case $as_type in
4655     clang)
4656         add_asflags -Qunused-arguments
4657     ;;
4658 esac
4659
4660 case $ld_type in
4661     clang)
4662         check_ldflags -Qunused-arguments
4663     ;;
4664 esac
4665
4666 case $target_os in
4667     osf1)
4668         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4669     ;;
4670     plan9)
4671         add_cppflags -Dmain=plan9_main
4672     ;;
4673 esac
4674
4675 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4676
4677 check_deps $CONFIG_LIST       \
4678            $CONFIG_EXTRA      \
4679            $HAVE_LIST         \
4680            $ALL_COMPONENTS    \
4681
4682 enabled_all dxva2 CoTaskMemFree &&
4683     prepend avconv_libs $($ldflags_filter "-lole32") &&
4684     enable dxva2_lib
4685
4686 ! enabled_any memalign posix_memalign aligned_malloc &&
4687     enabled simd_align_16 && enable memalign_hack
4688
4689 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
4690
4691 for thread in $THREADS_LIST; do
4692     if enabled $thread; then
4693         test -n "$thread_type" &&
4694             die "ERROR: Only one thread type must be selected." ||
4695             thread_type="$thread"
4696     fi
4697 done
4698
4699 enabled zlib && add_cppflags -DZLIB_CONST
4700
4701 # conditional library dependencies, in linking order
4702 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
4703 enabled resample_filter && prepend avfilter_deps "avresample"
4704 enabled scale_filter    && prepend avfilter_deps "swscale"
4705
4706 enabled opus_decoder    && prepend avcodec_deps "avresample"
4707
4708 expand_deps(){
4709     lib_deps=${1}_deps
4710     eval "deps=\$$lib_deps"
4711     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
4712     unique $lib_deps
4713 }
4714
4715 map 'expand_deps $v' $LIBRARY_LIST
4716
4717 echo "install prefix            $prefix"
4718 echo "source path               $source_path"
4719 echo "C compiler                $cc"
4720 echo "C library                 $libc_type"
4721 if test "$host_cc" != "$cc"; then
4722     echo "host C compiler           $host_cc"
4723     echo "host C library            $host_libc_type"
4724 fi
4725 echo "ARCH                      $arch ($cpu)"
4726 if test "$build_suffix" != ""; then
4727     echo "build suffix              $build_suffix"
4728 fi
4729 if test "$extra_version" != ""; then
4730     echo "version string suffix     $extra_version"
4731 fi
4732 echo "big-endian                ${bigendian-no}"
4733 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4734 if enabled x86; then
4735     echo "${yasmexe}                      ${yasm-no}"
4736     echo "MMX enabled               ${mmx-no}"
4737     echo "MMXEXT enabled            ${mmxext-no}"
4738     echo "3DNow! enabled            ${amd3dnow-no}"
4739     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4740     echo "SSE enabled               ${sse-no}"
4741     echo "SSSE3 enabled             ${ssse3-no}"
4742     echo "AVX enabled               ${avx-no}"
4743     echo "XOP enabled               ${xop-no}"
4744     echo "FMA3 enabled              ${fma3-no}"
4745     echo "FMA4 enabled              ${fma4-no}"
4746     echo "i686 features enabled     ${i686-no}"
4747     echo "CMOV is fast              ${fast_cmov-no}"
4748     echo "EBX available             ${ebx_available-no}"
4749     echo "EBP available             ${ebp_available-no}"
4750 fi
4751 if enabled aarch64; then
4752     echo "NEON enabled              ${neon-no}"
4753     echo "VFP enabled               ${vfp-no}"
4754 fi
4755 if enabled arm; then
4756     echo "ARMv5TE enabled           ${armv5te-no}"
4757     echo "ARMv6 enabled             ${armv6-no}"
4758     echo "ARMv6T2 enabled           ${armv6t2-no}"
4759     echo "VFP enabled               ${vfp-no}"
4760     echo "NEON enabled              ${neon-no}"
4761 fi
4762 if enabled ppc; then
4763     echo "AltiVec enabled           ${altivec-no}"
4764     echo "VSX enabled               ${vsx-no}"
4765     echo "POWER8 enabled            ${power8-no}"
4766     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4767     echo "dcbzl available           ${dcbzl-no}"
4768 fi
4769 echo "debug symbols             ${debug-no}"
4770 echo "optimize for size         ${small-no}"
4771 echo "optimizations             ${optimizations-no}"
4772 echo "static                    ${static-no}"
4773 echo "shared                    ${shared-no}"
4774 echo "new filter support        ${avfilter-no}"
4775 echo "network support           ${network-no}"
4776 echo "threading support         ${thread_type-no}"
4777 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4778 echo "SDL support               ${sdl-no}"
4779 test -n "$random_seed" &&
4780     echo "random seed               ${random_seed}"
4781 echo
4782
4783 echo "External libraries:"
4784 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4785 echo
4786
4787 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4788     echo "Enabled ${type}s:"
4789     eval list=\$$(toupper $type)_LIST
4790     print_enabled '_*' $list | print_3_columns
4791     echo
4792 done
4793
4794 license="LGPL version 2.1 or later"