configure: Factor out flacdsp module
[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     flacdsp
1592     fmtconvert
1593     gcrypt
1594     gmp
1595     golomb
1596     gplv3
1597     h263dsp
1598     h264chroma
1599     h264dsp
1600     h264pred
1601     h264qpel
1602     hpeldsp
1603     huffman
1604     huffyuvdsp
1605     huffyuvencdsp
1606     idctdsp
1607     iirfilter
1608     imdct15
1609     intrax8
1610     jpegtables
1611     libx262
1612     lgplv3
1613     lpc
1614     me_cmp
1615     mpeg_er
1616     mpegaudio
1617     mpegaudiodsp
1618     mpegvideo
1619     mpegvideoenc
1620     pixblockdsp
1621     qpeldsp
1622     qsv
1623     qsvdec
1624     qsvenc
1625     rangecoder
1626     riffdec
1627     riffenc
1628     rtpdec
1629     rtpenc_chain
1630     sinewin
1631     snappy
1632     startcode
1633     texturedsp
1634     texturedspenc
1635     tpeldsp
1636     videodsp
1637     vp3dsp
1638     wma_freqs
1639 "
1640
1641 CMDLINE_SELECT="
1642     $ARCH_EXT_LIST
1643     $CONFIG_LIST
1644     $HAVE_LIST_CMDLINE
1645     $THREADS_LIST
1646     asm
1647     cross_compile
1648     debug
1649     extra_warnings
1650     logging
1651     lto
1652     optimizations
1653     rpath
1654 "
1655
1656 PATHS_LIST="
1657     bindir
1658     datadir
1659     docdir
1660     incdir
1661     libdir
1662     mandir
1663     prefix
1664     shlibdir
1665 "
1666
1667 CMDLINE_SET="
1668     $PATHS_LIST
1669     ar
1670     arch
1671     as
1672     build_suffix
1673     cc
1674     cpu
1675     cross_prefix
1676     dep_cc
1677     env
1678     extra_version
1679     host_cc
1680     host_cflags
1681     host_ld
1682     host_ldflags
1683     host_libs
1684     host_os
1685     ld
1686     logfile
1687     malloc_prefix
1688     nm
1689     optflags
1690     pkg_config
1691     pkg_config_flags
1692     random_seed
1693     samples
1694     sysinclude
1695     sysroot
1696     target_exec
1697     target_os
1698     target_path
1699     target_samples
1700     toolchain
1701 "
1702
1703 CMDLINE_APPEND="
1704     extra_cflags
1705     host_cppflags
1706 "
1707
1708 # code dependency declarations
1709
1710 # architecture extensions
1711
1712 armv5te_deps="arm"
1713 armv6_deps="arm"
1714 armv6t2_deps="arm"
1715 armv8_deps="aarch64"
1716 neon_deps_any="aarch64 arm"
1717 intrinsics_neon_deps="neon"
1718 vfp_deps_any="aarch64 arm"
1719 vfpv3_deps="vfp"
1720
1721 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1722
1723 altivec_deps="ppc"
1724 ppc4xx_deps="ppc"
1725 vsx_deps="altivec"
1726 power8_deps="vsx"
1727
1728 cpunop_deps="i686"
1729 x86_64_select="i686"
1730 x86_64_suggest="fast_cmov"
1731
1732 amd3dnow_deps="mmx"
1733 amd3dnowext_deps="amd3dnow"
1734 i686_deps="x86"
1735 mmx_deps="x86"
1736 mmxext_deps="mmx"
1737 sse_deps="mmxext"
1738 sse2_deps="sse"
1739 sse3_deps="sse2"
1740 ssse3_deps="sse3"
1741 sse4_deps="ssse3"
1742 sse42_deps="sse4"
1743 avx_deps="sse42"
1744 xop_deps="avx"
1745 fma3_deps="avx"
1746 fma4_deps="avx"
1747 avx2_deps="avx"
1748
1749 mmx_external_deps="yasm"
1750 mmx_inline_deps="inline_asm"
1751 mmx_suggest="mmx_external mmx_inline"
1752
1753 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1754     eval dep=\$${ext}_deps
1755     eval ${ext}_external_deps='"${dep}_external"'
1756     eval ${ext}_inline_deps='"${dep}_inline"'
1757     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1758 done
1759
1760 aligned_stack_if_any="aarch64 ppc x86"
1761 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1762 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1763 fast_unaligned_if_any="aarch64 ppc x86"
1764 simd_align_16_if_any="altivec neon sse"
1765
1766 # system capabilities
1767 symver_if_any="symver_asm_label symver_gnu_asm"
1768 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1769
1770 # threading support
1771 atomics_gcc_if="sync_val_compare_and_swap"
1772 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1773 atomics_win32_if="MemoryBarrier"
1774 atomics_native_if_any="$ATOMICS_LIST"
1775 w32threads_deps="atomics_native"
1776 threads_if_any="$THREADS_LIST"
1777
1778 # subsystems
1779 dct_select="rdft"
1780 error_resilience_select="me_cmp"
1781 faandct_deps="faan fdctdsp"
1782 faanidct_deps="faan idctdsp"
1783 intrax8_select="error_resilience"
1784 mdct_select="fft"
1785 rdft_select="fft"
1786 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1787 mpeg_er_select="error_resilience"
1788 mpegaudio_select="mpegaudiodsp"
1789 mpegaudiodsp_select="dct"
1790 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp videodsp"
1791 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1792 nvenc_deps_any="dlopen LoadLibrary"
1793 nvenc_extralibs='$ldl'
1794 qsvdec_select="qsv"
1795 qsvenc_select="qsv"
1796
1797 # decoders / encoders
1798 aac_decoder_select="imdct15 mdct sinewin"
1799 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1800 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1801 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1802 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1803 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1804 aic_decoder_select="golomb idctdsp"
1805 alac_encoder_select="lpc"
1806 als_decoder_select="bswapdsp"
1807 amrnb_decoder_select="lsp"
1808 amrwb_decoder_select="lsp"
1809 amv_decoder_select="sp5x_decoder"
1810 ape_decoder_select="bswapdsp"
1811 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1812 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1813 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1814 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1815 atrac1_decoder_select="mdct sinewin"
1816 atrac3_decoder_select="mdct"
1817 atrac3p_decoder_select="mdct sinewin"
1818 bink_decoder_select="blockdsp hpeldsp"
1819 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1820 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1821 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1822 cllc_decoder_select="bswapdsp"
1823 comfortnoise_encoder_select="lpc"
1824 cook_decoder_select="audiodsp mdct sinewin"
1825 cscd_decoder_select="lzo"
1826 cscd_decoder_suggest="zlib"
1827 dca_decoder_select="fmtconvert mdct"
1828 dds_decoder_select="texturedsp"
1829 dnxhd_decoder_select="blockdsp idctdsp"
1830 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1831 dvvideo_decoder_select="dvprofile idctdsp"
1832 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1833 dxa_decoder_deps="zlib"
1834 eac3_decoder_select="ac3_decoder"
1835 eac3_encoder_select="ac3_encoder"
1836 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1837 eatgq_decoder_select="aandcttables idctdsp"
1838 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
1839 exr_decoder_deps="zlib"
1840 ffv1_decoder_select="golomb rangecoder"
1841 ffv1_encoder_select="rangecoder"
1842 ffvhuff_decoder_select="huffyuv_decoder"
1843 ffvhuff_encoder_select="huffyuv_encoder"
1844 fic_decoder_select="golomb"
1845 flac_decoder_select="flacdsp golomb"
1846 flac_encoder_select="bswapdsp flacdsp golomb lpc"
1847 flashsv_decoder_deps="zlib"
1848 flashsv_encoder_deps="zlib"
1849 flashsv2_decoder_deps="zlib"
1850 flv_decoder_select="h263_decoder"
1851 flv_encoder_select="h263_encoder"
1852 fourxm_decoder_select="blockdsp bswapdsp"
1853 fraps_decoder_select="bswapdsp huffman"
1854 g2m_decoder_deps="zlib"
1855 g2m_decoder_select="blockdsp idctdsp jpegtables"
1856 h261_decoder_select="mpeg_er mpegvideo"
1857 h261_encoder_select="aandcttables mpegvideoenc"
1858 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1859 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1860 h263i_decoder_select="h263_decoder"
1861 h263p_encoder_select="h263_encoder"
1862 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
1863 h264_decoder_suggest="error_resilience"
1864 h264_nvenc_encoder_deps="nvenc"
1865 h264_qsv_decoder_deps="libmfx"
1866 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
1867 h264_qsv_encoder_deps="libmfx"
1868 h264_qsv_encoder_select="qsvenc"
1869 hap_decoder_select="snappy texturedsp"
1870 hap_encoder_deps="libsnappy"
1871 hap_encoder_select="texturedspenc"
1872 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1873 hevc_nvenc_encoder_deps="nvenc"
1874 hevc_qsv_encoder_deps="libmfx"
1875 hevc_qsv_encoder_select="qsvenc"
1876 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1877 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1878 iac_decoder_select="imc_decoder"
1879 imc_decoder_select="bswapdsp fft mdct sinewin"
1880 indeo3_decoder_select="hpeldsp"
1881 interplay_video_decoder_select="hpeldsp"
1882 jpegls_decoder_select="golomb mjpeg_decoder"
1883 jpegls_encoder_select="golomb"
1884 jv_decoder_select="blockdsp"
1885 lagarith_decoder_select="huffyuvdsp"
1886 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
1887 loco_decoder_select="golomb"
1888 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1889 metasound_decoder_select="lsp mdct sinewin"
1890 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1891 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
1892 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
1893 mjpegb_decoder_select="mjpeg_decoder"
1894 mlp_decoder_select="mlp_parser"
1895 motionpixels_decoder_select="bswapdsp"
1896 mp1_decoder_select="mpegaudio"
1897 mp1float_decoder_select="mpegaudio"
1898 mp2_decoder_select="mpegaudio"
1899 mp2float_decoder_select="mpegaudio"
1900 mp3_decoder_select="mpegaudio"
1901 mp3adu_decoder_select="mpegaudio"
1902 mp3adufloat_decoder_select="mpegaudio"
1903 mp3float_decoder_select="mpegaudio"
1904 mp3on4_decoder_select="mpegaudio"
1905 mp3on4float_decoder_select="mpegaudio"
1906 mpc7_decoder_select="bswapdsp mpegaudiodsp"
1907 mpc8_decoder_select="mpegaudiodsp"
1908 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1909 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1910 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
1911 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1912 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
1913 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1914 mpeg2_qsv_encoder_deps="libmfx"
1915 mpeg2_qsv_encoder_select="qsvenc"
1916 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1917 mpeg4_encoder_select="h263_encoder"
1918 msmpeg4v1_decoder_select="h263_decoder"
1919 msmpeg4v2_decoder_select="h263_decoder"
1920 msmpeg4v2_encoder_select="h263_encoder"
1921 msmpeg4v3_decoder_select="h263_decoder"
1922 msmpeg4v3_encoder_select="h263_encoder"
1923 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
1924 mxpeg_decoder_select="mjpeg_decoder"
1925 nellymoser_decoder_select="mdct sinewin"
1926 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1927 nuv_decoder_select="idctdsp lzo"
1928 on2avc_decoder_select="mdct"
1929 opus_decoder_deps="avresample"
1930 opus_decoder_select="imdct15"
1931 png_decoder_deps="zlib"
1932 png_encoder_deps="zlib"
1933 png_encoder_select="huffyuvencdsp"
1934 prores_decoder_select="idctdsp"
1935 prores_encoder_select="fdctdsp"
1936 qcelp_decoder_select="lsp"
1937 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1938 ra_144_encoder_select="audio_frame_queue lpc"
1939 ralf_decoder_select="golomb"
1940 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1941 rv10_encoder_select="h263_encoder"
1942 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1943 rv20_encoder_select="h263_encoder"
1944 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1945 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1946 shorten_decoder_select="golomb"
1947 sipr_decoder_select="lsp"
1948 sp5x_decoder_select="mjpeg_decoder"
1949 svq1_decoder_select="hpeldsp"
1950 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
1951 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1952 svq3_decoder_suggest="zlib"
1953 tak_decoder_select="audiodsp"
1954 tdsc_decoder_deps="zlib"
1955 tdsc_decoder_select="mjpeg_decoder"
1956 theora_decoder_select="vp3_decoder"
1957 thp_decoder_select="mjpeg_decoder"
1958 tiff_decoder_suggest="zlib"
1959 tiff_encoder_suggest="zlib"
1960 truehd_decoder_select="mlp_decoder"
1961 truemotion2_decoder_select="bswapdsp"
1962 truespeech_decoder_select="bswapdsp"
1963 tscc_decoder_deps="zlib"
1964 txd_decoder_select="texturedsp"
1965 twinvq_decoder_select="mdct lsp sinewin"
1966 utvideo_decoder_select="bswapdsp"
1967 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
1968 vble_decoder_select="huffyuvdsp"
1969 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
1970 vc1image_decoder_select="vc1_decoder"
1971 vorbis_decoder_select="mdct"
1972 vorbis_encoder_select="mdct"
1973 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1974 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1975 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1976 vp6a_decoder_select="vp6_decoder"
1977 vp6f_decoder_select="vp6_decoder"
1978 vp7_decoder_select="h264pred videodsp"
1979 vp8_decoder_select="h264pred videodsp"
1980 vp9_decoder_select="videodsp"
1981 webp_decoder_select="vp8_decoder"
1982 wmapro_decoder_select="mdct sinewin wma_freqs"
1983 wmav1_decoder_select="mdct sinewin wma_freqs"
1984 wmav1_encoder_select="mdct sinewin wma_freqs"
1985 wmav2_decoder_select="mdct sinewin wma_freqs"
1986 wmav2_encoder_select="mdct sinewin wma_freqs"
1987 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1988 wmv1_decoder_select="h263_decoder"
1989 wmv1_encoder_select="h263_encoder"
1990 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
1991 wmv2_encoder_select="h263_encoder"
1992 wmv3_decoder_select="vc1_decoder"
1993 wmv3image_decoder_select="wmv3_decoder"
1994 zerocodec_decoder_deps="zlib"
1995 zlib_decoder_deps="zlib"
1996 zlib_encoder_deps="zlib"
1997 zmbv_decoder_deps="zlib"
1998 zmbv_encoder_deps="zlib"
1999
2000 # hardware accelerators
2001 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2002 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2003 vaapi_deps="va_va_h"
2004 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2005 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2006 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2007
2008 h263_vaapi_hwaccel_deps="vaapi"
2009 h263_vaapi_hwaccel_select="h263_decoder"
2010 h263_vdpau_hwaccel_deps="vdpau"
2011 h263_vdpau_hwaccel_select="h263_decoder"
2012 h264_d3d11va_hwaccel_deps="d3d11va"
2013 h264_d3d11va_hwaccel_select="h264_decoder"
2014 h264_dxva2_hwaccel_deps="dxva2"
2015 h264_dxva2_hwaccel_select="h264_decoder"
2016 h264_mmal_decoder_deps="mmal"
2017 h264_mmal_hwaccel_deps="mmal"
2018 h264_mmal_decoder_select="h264_decoder"
2019 h264_mmal_encoder_deps="mmal"
2020 h264_qsv_hwaccel_deps="libmfx"
2021 h264_vaapi_hwaccel_deps="vaapi"
2022 h264_vaapi_hwaccel_select="h264_decoder"
2023 h264_vda_hwaccel_deps="vda"
2024 h264_vda_hwaccel_select="h264_decoder"
2025 h264_vda_old_hwaccel_deps="vda"
2026 h264_vda_old_hwaccel_select="h264_decoder"
2027 h264_vdpau_hwaccel_deps="vdpau"
2028 h264_vdpau_hwaccel_select="h264_decoder"
2029 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2030 hevc_d3d11va_hwaccel_select="hevc_decoder"
2031 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2032 hevc_dxva2_hwaccel_select="hevc_decoder"
2033 mpeg1_vdpau_hwaccel_deps="vdpau"
2034 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2035 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2036 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2037 mpeg2_dxva2_hwaccel_deps="dxva2"
2038 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2039 mpeg2_vaapi_hwaccel_deps="vaapi"
2040 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2041 mpeg2_vdpau_hwaccel_deps="vdpau"
2042 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2043 mpeg4_vaapi_hwaccel_deps="vaapi"
2044 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2045 mpeg4_vdpau_hwaccel_deps="vdpau"
2046 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2047 vc1_d3d11va_hwaccel_deps="d3d11va"
2048 vc1_d3d11va_hwaccel_select="vc1_decoder"
2049 vc1_dxva2_hwaccel_deps="dxva2"
2050 vc1_dxva2_hwaccel_select="vc1_decoder"
2051 vc1_vaapi_hwaccel_deps="vaapi"
2052 vc1_vaapi_hwaccel_select="vc1_decoder"
2053 vc1_vdpau_hwaccel_deps="vdpau"
2054 vc1_vdpau_hwaccel_select="vc1_decoder"
2055 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2056 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2057 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2058 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2059
2060 # parsers
2061 h264_parser_select="h264_decoder"
2062 hevc_parser_select="golomb"
2063 mpegvideo_parser_select="mpegvideo"
2064 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2065 vc1_parser_select="mpegvideo startcode vc1_decoder"
2066
2067 # bitstream_filters
2068 mjpeg2jpeg_bsf_select="jpegtables"
2069
2070 # external libraries
2071 libdcadec_decoder_deps="libdcadec"
2072 libfaac_encoder_deps="libfaac"
2073 libfaac_encoder_select="audio_frame_queue"
2074 libfdk_aac_decoder_deps="libfdk_aac"
2075 libfdk_aac_encoder_deps="libfdk_aac"
2076 libfdk_aac_encoder_select="audio_frame_queue"
2077 libgsm_decoder_deps="libgsm"
2078 libgsm_encoder_deps="libgsm"
2079 libgsm_ms_decoder_deps="libgsm"
2080 libgsm_ms_encoder_deps="libgsm"
2081 libilbc_decoder_deps="libilbc"
2082 libilbc_encoder_deps="libilbc"
2083 libmp3lame_encoder_deps="libmp3lame"
2084 libmp3lame_encoder_select="audio_frame_queue"
2085 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2086 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2087 libopencore_amrnb_encoder_select="audio_frame_queue"
2088 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2089 libopenh264_encoder_deps="libopenh264"
2090 libopenjpeg_decoder_deps="libopenjpeg"
2091 libopenjpeg_encoder_deps="libopenjpeg"
2092 libopus_decoder_deps="libopus"
2093 libopus_encoder_deps="libopus"
2094 libopus_encoder_select="audio_frame_queue"
2095 libschroedinger_decoder_deps="libschroedinger"
2096 libschroedinger_encoder_deps="libschroedinger"
2097 libspeex_decoder_deps="libspeex"
2098 libspeex_encoder_deps="libspeex"
2099 libspeex_encoder_select="audio_frame_queue"
2100 libtheora_encoder_deps="libtheora"
2101 libtwolame_encoder_deps="libtwolame"
2102 libvo_aacenc_encoder_deps="libvo_aacenc"
2103 libvo_aacenc_encoder_select="audio_frame_queue"
2104 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2105 libvorbis_encoder_deps="libvorbis"
2106 libvorbis_encoder_select="audio_frame_queue"
2107 libvpx_vp8_decoder_deps="libvpx"
2108 libvpx_vp8_encoder_deps="libvpx"
2109 libvpx_vp9_decoder_deps="libvpx"
2110 libvpx_vp9_encoder_deps="libvpx"
2111 libwavpack_encoder_deps="libwavpack"
2112 libwebp_encoder_deps="libwebp"
2113 libx262_encoder_deps="libx262"
2114 libx264_encoder_deps="libx264"
2115 libx265_encoder_deps="libx265"
2116 libxavs_encoder_deps="libxavs"
2117 libxvid_encoder_deps="libxvid"
2118
2119 # demuxers / muxers
2120 ac3_demuxer_select="ac3_parser"
2121 asf_demuxer_select="riffdec"
2122 asf_muxer_select="riffenc"
2123 asf_stream_muxer_select="asf_muxer"
2124 avi_demuxer_select="riffdec"
2125 avi_muxer_select="riffenc"
2126 avisynth_demuxer_deps="avisynth"
2127 avisynth_demuxer_select="riffdec"
2128 caf_demuxer_select="riffdec"
2129 dash_muxer_select="mp4_muxer"
2130 dirac_demuxer_select="dirac_parser"
2131 dv_demuxer_select="dvprofile"
2132 dv_muxer_select="dvprofile"
2133 dxa_demuxer_select="riffdec"
2134 eac3_demuxer_select="ac3_parser"
2135 f4v_muxer_select="mov_muxer"
2136 flac_demuxer_select="flac_parser"
2137 hds_muxer_select="flv_muxer"
2138 hls_muxer_select="mpegts_muxer"
2139 ipod_muxer_select="mov_muxer"
2140 ismv_muxer_select="mov_muxer"
2141 matroska_audio_muxer_select="matroska_muxer"
2142 matroska_demuxer_select="riffdec"
2143 matroska_demuxer_suggest="bzlib lzo zlib"
2144 matroska_muxer_select="riffenc"
2145 mmf_muxer_select="riffenc"
2146 mov_demuxer_select="riffdec"
2147 mov_demuxer_suggest="zlib"
2148 mov_muxer_select="riffenc rtpenc_chain"
2149 mp3_demuxer_select="mpegaudio_parser"
2150 mp4_muxer_select="mov_muxer"
2151 mpegts_muxer_select="adts_muxer latm_muxer"
2152 mpegtsraw_demuxer_select="mpegts_demuxer"
2153 mxf_d10_muxer_select="mxf_muxer"
2154 nut_muxer_select="riffenc"
2155 nuv_demuxer_select="riffdec"
2156 oga_muxer_select="ogg_muxer"
2157 ogg_demuxer_select="golomb"
2158 opus_muxer_select="ogg_muxer"
2159 psp_muxer_select="mov_muxer"
2160 rtp_demuxer_select="sdp_demuxer"
2161 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2162 rtsp_demuxer_select="http_protocol rtpdec"
2163 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2164 sap_demuxer_select="sdp_demuxer"
2165 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2166 sdp_demuxer_select="rtpdec"
2167 smoothstreaming_muxer_select="ismv_muxer"
2168 spdif_muxer_select="aac_parser"
2169 spx_muxer_select="ogg_muxer"
2170 tak_demuxer_select="tak_parser"
2171 tg2_muxer_select="mov_muxer"
2172 tgp_muxer_select="mov_muxer"
2173 w64_demuxer_select="wav_demuxer"
2174 wav_demuxer_select="riffdec"
2175 wav_muxer_select="riffenc"
2176 webm_muxer_select="riffenc"
2177 wtv_demuxer_select="riffdec"
2178 xmv_demuxer_select="riffdec"
2179 xwma_demuxer_select="riffdec"
2180
2181 # indevs / outdevs
2182 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2183 alsa_outdev_deps="alsa_asoundlib_h"
2184 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2185 dv1394_indev_deps="dv1394"
2186 dv1394_indev_select="dv_demuxer"
2187 fbdev_indev_deps="linux_fb_h"
2188 jack_indev_deps="jack_jack_h pthreads"
2189 libcdio_indev_deps="libcdio"
2190 libdc1394_indev_deps="libdc1394"
2191 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2192 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2193 pulse_indev_deps="libpulse"
2194 sndio_indev_deps="sndio_h"
2195 sndio_outdev_deps="sndio_h"
2196 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2197 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2198 vfwcap_indev_extralibs="-lavicap32"
2199 x11grab_indev_deps="x11grab"
2200 x11grab_xcb_indev_deps="libxcb"
2201
2202 # protocols
2203 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2204 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2205 ffrtmpcrypt_protocol_select="tcp_protocol"
2206 ffrtmphttp_protocol_deps="!librtmp_protocol"
2207 ffrtmphttp_protocol_select="http_protocol"
2208 gopher_protocol_select="network"
2209 http_protocol_select="tcp_protocol"
2210 httpproxy_protocol_select="tcp_protocol"
2211 https_protocol_select="tls_protocol"
2212 icecast_protocol_select="http_protocol"
2213 librtmp_protocol_deps="librtmp"
2214 librtmpe_protocol_deps="librtmp"
2215 librtmps_protocol_deps="librtmp"
2216 librtmpt_protocol_deps="librtmp"
2217 librtmpte_protocol_deps="librtmp"
2218 mmsh_protocol_select="http_protocol"
2219 mmst_protocol_select="network"
2220 rtmp_protocol_deps="!librtmp_protocol"
2221 rtmp_protocol_select="tcp_protocol"
2222 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2223 rtmps_protocol_deps="!librtmp_protocol"
2224 rtmps_protocol_select="tls_protocol"
2225 rtmpt_protocol_select="ffrtmphttp_protocol"
2226 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2227 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2228 rtp_protocol_select="udp_protocol"
2229 sctp_protocol_deps="struct_sctp_event_subscribe"
2230 sctp_protocol_select="network"
2231 srtp_protocol_select="rtp_protocol"
2232 tcp_protocol_select="network"
2233 tls_gnutls_protocol_deps="gnutls"
2234 tls_gnutls_protocol_select="tcp_protocol"
2235 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2236 tls_openssl_protocol_select="tcp_protocol"
2237 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2238 udp_protocol_select="network"
2239 unix_protocol_deps="sys_un_h"
2240 unix_protocol_select="network"
2241
2242 # filters
2243 blackframe_filter_deps="gpl"
2244 boxblur_filter_deps="gpl"
2245 bs2b_filter_deps="libbs2b"
2246 cropdetect_filter_deps="gpl"
2247 delogo_filter_deps="gpl"
2248 drawtext_filter_deps="libfreetype"
2249 frei0r_filter_deps="frei0r dlopen"
2250 frei0r_filter_extralibs='$ldl'
2251 frei0r_src_filter_deps="frei0r dlopen"
2252 frei0r_src_filter_extralibs='$ldl'
2253 hqdn3d_filter_deps="gpl"
2254 interlace_filter_deps="gpl"
2255 ocv_filter_deps="libopencv"
2256 resample_filter_deps="avresample"
2257 scale_filter_deps="swscale"
2258
2259 # examples
2260 avcodec_example_deps="avcodec avutil"
2261 filter_audio_example_deps="avfilter avutil"
2262 metadata_example_deps="avformat avutil"
2263 output_example_deps="avcodec avformat avutil swscale"
2264 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2265 transcode_aac_example_deps="avcodec avformat avresample"
2266
2267 # libraries, in linking order
2268 avcodec_deps="avutil"
2269 avdevice_deps="avformat avcodec avutil"
2270 avfilter_deps="avutil"
2271 avformat_deps="avcodec avutil"
2272 avresample_deps="avutil"
2273 swscale_deps="avutil"
2274
2275 # programs
2276 avconv_deps="avcodec avfilter avformat avresample swscale"
2277 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2278                fps_filter null_filter resample_filter scale_filter
2279                setpts_filter trim_filter"
2280 avplay_deps="avcodec avformat avresample swscale sdl"
2281 avplay_libs='$sdl_libs'
2282 avplay_select="rdft transpose_filter hflip_filter vflip_filter"
2283 avprobe_deps="avcodec avformat"
2284
2285 # documentation
2286 pod2man_deps="doc"
2287 texi2html_deps="doc"
2288
2289 # default parameters
2290
2291 logfile="config.log"
2292
2293 # installation paths
2294 prefix_default="/usr/local"
2295 bindir_default='${prefix}/bin'
2296 datadir_default='${prefix}/share/avconv'
2297 docdir_default='${prefix}/share/doc/libav'
2298 incdir_default='${prefix}/include'
2299 libdir_default='${prefix}/lib'
2300 mandir_default='${prefix}/share/man'
2301 shlibdir_default="$libdir_default"
2302
2303 # toolchain
2304 ar_default="ar"
2305 cc_default="gcc"
2306 host_cc_default="gcc"
2307 cp_f="cp -f"
2308 ln_s="ln -s -f"
2309 nm_default="nm -g"
2310 objformat="elf"
2311 pkg_config_default=pkg-config
2312 ranlib="ranlib"
2313 strip="strip"
2314 yasmexe="yasm"
2315
2316 # machine
2317 arch_default=$(uname -m)
2318 cpu="generic"
2319 intrinsics="none"
2320
2321 # OS
2322 target_os_default=$(tolower $(uname -s))
2323 host_os=$target_os_default
2324
2325 # configurable options
2326 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2327
2328 enable asm
2329 enable debug
2330 enable doc
2331 enable faan faandct faanidct
2332 enable optimizations
2333 enable safe_bitstream_reader
2334 enable static
2335 enable swscale_alpha
2336 enable valgrind_backtrace
2337
2338 # By default, enable only those hwaccels that have no external dependencies.
2339 enable d3d11va dxva2 vda vdpau
2340
2341 # build settings
2342 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2343 LIBPREF="lib"
2344 LIBSUF=".a"
2345 FULLNAME='$(NAME)$(BUILDSUF)'
2346 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2347 SLIBPREF="lib"
2348 SLIBSUF=".so"
2349 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2350 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2351 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2352 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2353 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2354 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2355
2356 asflags_filter=echo
2357 cflags_filter=echo
2358 ldflags_filter=echo
2359
2360 AS_C='-c'
2361 AS_O='-o $@'
2362 CC_C='-c'
2363 CC_E='-E -o $@'
2364 CC_O='-o $@'
2365 LD_O='-o $@'
2366 LD_LIB='-l%'
2367 LD_PATH='-L'
2368 HOSTCC_C='-c'
2369 HOSTCC_E='-E -o $@'
2370 HOSTCC_O='-o $@'
2371 HOSTLD_O='-o $@'
2372
2373 host_libs='-lm'
2374 host_cflags_filter=echo
2375 host_ldflags_filter=echo
2376
2377 target_path='$(CURDIR)'
2378
2379 # since the object filename is not given with the -MM flag, the compiler
2380 # is only able to print the basename, and we must add the path ourselves
2381 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2382 DEPFLAGS='-MM'
2383
2384 # find source path
2385 if test -f configure; then
2386     source_path=.
2387 else
2388     source_path=$(cd $(dirname "$0"); pwd)
2389     echo "$source_path" | grep -q '[[:blank:]]' &&
2390         die "Out of tree builds are impossible with whitespace in source path."
2391     test -e "$source_path/config.h" &&
2392         die "Out of tree builds are impossible with config.h in source dir."
2393 fi
2394
2395 for v in "$@"; do
2396     r=${v#*=}
2397     l=${v%"$r"}
2398     r=$(sh_quote "$r")
2399     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2400 done
2401
2402 find_things(){
2403     thing=$1
2404     pattern=$2
2405     file=$source_path/$3
2406     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2407 }
2408
2409 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2410 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2411 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2412 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2413 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2414 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2415 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2416 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2417 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2418 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2419 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2420
2421 ALL_COMPONENTS="
2422     $BSF_LIST
2423     $DECODER_LIST
2424     $DEMUXER_LIST
2425     $ENCODER_LIST
2426     $FILTER_LIST
2427     $HWACCEL_LIST
2428     $INDEV_LIST
2429     $MUXER_LIST
2430     $OUTDEV_LIST
2431     $PARSER_LIST
2432     $PROTOCOL_LIST
2433 "
2434
2435 for n in $COMPONENT_LIST; do
2436     v=$(toupper ${n%s})_LIST
2437     eval enable \$$v
2438     eval ${n}_if_any="\$$v"
2439 done
2440
2441 enable $ARCH_EXT_LIST
2442
2443 die_unknown(){
2444     echo "Unknown option \"$1\"."
2445     echo "See $0 --help for available options."
2446     exit 1
2447 }
2448
2449 print_3_columns() {
2450     cat | tr ' ' '\n' | sort | pr -r -3 -t
2451 }
2452
2453 show_list() {
2454     suffix=_$1
2455     shift
2456     echo $* | sed s/$suffix//g | print_3_columns
2457     exit 0
2458 }
2459
2460 rand_list(){
2461     IFS=', '
2462     set -- $*
2463     unset IFS
2464     for thing; do
2465         comp=${thing%:*}
2466         prob=${thing#$comp}
2467         prob=${prob#:}
2468         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2469         echo "prob ${prob:-0.5}"
2470         printf '%s\n' $comp
2471     done
2472 }
2473
2474 do_random(){
2475     action=$1
2476     shift
2477     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2478     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2479 }
2480
2481 for opt do
2482     optval="${opt#*=}"
2483     case "$opt" in
2484         --extra-ldflags=*)
2485             add_ldflags $optval
2486         ;;
2487         --extra-ldexeflags=*)
2488             add_ldexeflags $optval
2489         ;;
2490         --extra-libs=*)
2491             add_extralibs $optval
2492         ;;
2493         --disable-devices)
2494             disable $INDEV_LIST $OUTDEV_LIST
2495         ;;
2496         --enable-debug=*)
2497             debuglevel="$optval"
2498         ;;
2499         --disable-programs)
2500             disable $PROGRAM_LIST
2501         ;;
2502         --disable-everything)
2503             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2504         ;;
2505         --disable-all)
2506             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2507             disable $LIBRARY_LIST $PROGRAM_LIST doc
2508         ;;
2509         --enable-random|--disable-random)
2510             action=${opt%%-random}
2511             do_random ${action#--} $COMPONENT_LIST
2512         ;;
2513         --enable-random=*|--disable-random=*)
2514             action=${opt%%-random=*}
2515             do_random ${action#--} $optval
2516         ;;
2517         --enable-*=*|--disable-*=*)
2518             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2519             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2520             eval list=\$$(toupper $thing)_LIST
2521             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2522             $action $(filter "$name" $list)
2523         ;;
2524         --enable-avserver|--disable-avserver*)
2525             warn "avserver has been removed, the ${opt} option is only"\
2526                  "provided for compatibility and will be removed in the future"
2527         ;;
2528         --enable-?*|--disable-?*)
2529             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2530             if is_in $option $COMPONENT_LIST; then
2531                 test $action = disable && action=unset
2532                 eval $action \$$(toupper ${option%s})_LIST
2533             elif is_in $option $CMDLINE_SELECT; then
2534                 $action $option
2535             else
2536                 die_unknown $opt
2537             fi
2538         ;;
2539         --list-*)
2540             NAME="${opt#--list-}"
2541             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2542             NAME=${NAME%s}
2543             eval show_list $NAME \$$(toupper $NAME)_LIST
2544         ;;
2545         --help|-h) show_help
2546         ;;
2547         *)
2548             optname="${opt%%=*}"
2549             optname="${optname#--}"
2550             optname=$(echo "$optname" | sed 's/-/_/g')
2551             if is_in $optname $CMDLINE_SET; then
2552                 eval $optname='$optval'
2553             elif is_in $optname $CMDLINE_APPEND; then
2554                 append $optname "$optval"
2555             else
2556                 die_unknown $opt
2557             fi
2558         ;;
2559     esac
2560 done
2561
2562 for e in $env; do
2563     eval "export $e"
2564 done
2565
2566 disabled logging && logfile=/dev/null
2567
2568 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2569 set >> $logfile
2570
2571 case "$toolchain" in
2572     clang-asan)
2573         cc_default="clang"
2574         add_cflags  -fsanitize=address
2575         add_ldflags -fsanitize=address
2576     ;;
2577     clang-tsan)
2578         cc_default="clang"
2579         add_cflags  -fsanitize=thread -pie
2580         add_ldflags -fsanitize=thread -pie
2581     ;;
2582     clang-usan)
2583         cc_default="clang"
2584         add_cflags  -fsanitize=undefined -O1
2585         add_ldflags -fsanitize=undefined
2586     ;;
2587     gcc-asan)
2588         cc_default="gcc"
2589         add_cflags  -fsanitize=address
2590         add_ldflags -fsanitize=address
2591     ;;
2592     gcc-tsan)
2593         cc_default="gcc"
2594         add_cflags  -fsanitize=thread -pie -fPIC
2595         add_ldflags -fsanitize=thread -pie -fPIC
2596     ;;
2597     gcc-usan)
2598         cc_default="gcc"
2599         add_cflags  -fsanitize=undefined
2600         add_ldflags -fsanitize=undefined
2601     ;;
2602     valgrind-massif)
2603         target_exec_default="valgrind"
2604         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2605     ;;
2606     valgrind-memcheck)
2607         target_exec_default="valgrind"
2608         target_exec_args="--track-origins=yes --leak-check=full"
2609     ;;
2610     msvc)
2611         # Check whether the current MSVC version needs the C99 converter.
2612         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2613         # support enough of C99 to build libav. Default to the new
2614         # behaviour if the regexp was unable to match anything, since this
2615         # successfully parses the version number of existing supported
2616         # versions that require the converter (MSVC 2010 and 2012).
2617         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2618         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2619             cc_default="cl"
2620         else
2621             cc_default="c99wrap cl"
2622         fi
2623         ld_default="link"
2624         nm_default="dumpbin -symbols"
2625         ar_default="lib"
2626         target_os_default="win32"
2627         # Use a relative path for TMPDIR. This makes sure all the
2628         # ffconf temp files are written with a relative path, avoiding
2629         # issues with msys/win32 path conversion for MSVC parameters
2630         # such as -Fo<file> or -out:<file>.
2631         TMPDIR=.
2632     ;;
2633     icl)
2634         cc_default="icl"
2635         ld_default="xilink"
2636         nm_default="dumpbin -symbols"
2637         ar_default="xilib"
2638         target_os_default="win32"
2639         TMPDIR=.
2640     ;;
2641     gcov)
2642         add_cflags  -fprofile-arcs -ftest-coverage
2643         add_ldflags -fprofile-arcs -ftest-coverage
2644     ;;
2645     hardened)
2646         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2647         add_cflags   -fno-strict-overflow -fstack-protector-all
2648         add_ldflags  -Wl,-z,relro -Wl,-z,now
2649     ;;
2650     ?*)
2651         die "Unknown toolchain $toolchain"
2652     ;;
2653 esac
2654
2655 test -n "$cross_prefix" && enable cross_compile
2656
2657 if enabled cross_compile; then
2658     test -n "$arch" && test -n "$target_os" ||
2659         die "Must specify target arch and OS when cross-compiling"
2660 fi
2661
2662 ar_default="${cross_prefix}${ar_default}"
2663 cc_default="${cross_prefix}${cc_default}"
2664 nm_default="${cross_prefix}${nm_default}"
2665 pkg_config_default="${cross_prefix}${pkg_config_default}"
2666 ranlib="${cross_prefix}${ranlib}"
2667 strip="${cross_prefix}${strip}"
2668
2669 sysinclude_default="${sysroot}/usr/include"
2670
2671 set_default arch cc pkg_config sysinclude target_exec target_os
2672 enabled cross_compile || host_cc_default=$cc
2673 set_default host_cc
2674
2675 if ! $pkg_config --version >/dev/null 2>&1; then
2676     warn "$pkg_config not found, library detection may fail."
2677     pkg_config=false
2678 fi
2679
2680 exesuf() {
2681     case $1 in
2682         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2683     esac
2684 }
2685
2686 EXESUF=$(exesuf $target_os)
2687 HOSTEXESUF=$(exesuf $host_os)
2688
2689 # set temporary file name
2690 : ${TMPDIR:=$TEMPDIR}
2691 : ${TMPDIR:=$TMP}
2692 : ${TMPDIR:=/tmp}
2693
2694 if ! check_cmd mktemp -u XXXXXX; then
2695     # simple replacement for missing mktemp
2696     # NOT SAFE FOR GENERAL USE
2697     mktemp(){
2698         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2699     }
2700 fi
2701
2702 tmpfile(){
2703     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2704         (set -C; exec > $tmp) 2>/dev/null ||
2705         die "Unable to create temporary file in $TMPDIR."
2706     append TMPFILES $tmp
2707     eval $1=$tmp
2708 }
2709
2710 trap 'rm -f -- $TMPFILES' EXIT
2711
2712 tmpfile TMPASM .asm
2713 tmpfile TMPC   .c
2714 tmpfile TMPE   $EXESUF
2715 tmpfile TMPH   .h
2716 tmpfile TMPO   .o
2717 tmpfile TMPS   .S
2718 tmpfile TMPSH  .sh
2719 tmpfile TMPV   .ver
2720
2721 unset -f mktemp
2722
2723 chmod +x $TMPE
2724
2725 # make sure we can execute files in $TMPDIR
2726 cat > $TMPSH 2>> $logfile <<EOF
2727 #! /bin/sh
2728 EOF
2729 chmod +x $TMPSH >> $logfile 2>&1
2730 if ! $TMPSH >> $logfile 2>&1; then
2731     cat <<EOF
2732 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2733 variable to another directory and make sure that it is not mounted noexec.
2734 EOF
2735     die "Sanity test failed."
2736 fi
2737
2738 armasm_flags(){
2739     for flag; do
2740         case $flag in
2741             # Filter out MSVC cl.exe options from cflags that shouldn't
2742             # be passed to gas-preprocessor
2743             -M[TD]*)                                            ;;
2744             *)                  echo $flag                      ;;
2745         esac
2746    done
2747 }
2748
2749 ccc_flags(){
2750     for flag; do
2751         case $flag in
2752             -std=c99)           echo -c99                       ;;
2753             -mcpu=*)            echo -arch ${flag#*=}           ;;
2754             -mieee)             echo -ieee                      ;;
2755             -O*|-fast)          echo $flag                      ;;
2756             -fno-math-errno)    echo -assume nomath_errno       ;;
2757             -g)                 echo -g3                        ;;
2758             -Wall)              echo -msg_enable level2         ;;
2759             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2760             -Wl,*)              echo $flag                      ;;
2761             -f*|-W*)                                            ;;
2762             *)                  echo $flag                      ;;
2763         esac
2764    done
2765 }
2766
2767 cparser_flags(){
2768     for flag; do
2769         case $flag in
2770             -Wno-switch)             echo -Wno-switch-enum ;;
2771             -Wno-format-zero-length) ;;
2772             -Wdisabled-optimization) ;;
2773             -Wno-pointer-sign)       echo -Wno-other ;;
2774             *)                       echo $flag ;;
2775         esac
2776     done
2777 }
2778
2779 msvc_common_flags(){
2780     for flag; do
2781         case $flag in
2782             # In addition to specifying certain flags under the compiler
2783             # specific filters, they must be specified here as well or else the
2784             # generic catch all at the bottom will print the original flag.
2785             -Wall)                ;;
2786             -std=c99)             ;;
2787             # Common flags
2788             -fomit-frame-pointer) ;;
2789             -g)                   echo -Z7 ;;
2790             -fno-math-errno)      ;;
2791             -fno-common)          ;;
2792             -fno-signed-zeros)    ;;
2793             -fPIC)                ;;
2794             -mthumb)              ;;
2795             -march=*)             ;;
2796             -lz)                  echo zlib.lib ;;
2797             -lavifil32)           echo vfw32.lib ;;
2798             -lavicap32)           echo vfw32.lib user32.lib ;;
2799             -l*)                  echo ${flag#-l}.lib ;;
2800             -L*)                  echo -libpath:${flag#-L} ;;
2801             *)                    echo $flag ;;
2802         esac
2803     done
2804 }
2805
2806 msvc_flags(){
2807     msvc_common_flags "$@"
2808     for flag; do
2809         case $flag in
2810             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2811                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2812                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2813                                        -wd4273 -wd4554 -wd4701 ;;
2814         esac
2815     done
2816 }
2817
2818 icl_flags(){
2819     msvc_common_flags "$@"
2820     for flag; do
2821         case $flag in
2822             # Despite what Intel's documentation says -Wall, which is supported
2823             # on Windows, does enable remarks so disable them here.
2824             -Wall)                echo $flag -Qdiag-disable:remark ;;
2825             -std=c99)             echo -Qstd=c99 ;;
2826         esac
2827     done
2828 }
2829
2830 pgi_flags(){
2831     for flag; do
2832         case $flag in
2833             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2834             -fomit-frame-pointer) echo -Mnoframe ;;
2835             -g)                   echo -gopt ;;
2836             *)                    echo $flag ;;
2837         esac
2838     done
2839 }
2840
2841 suncc_flags(){
2842     for flag; do
2843         case $flag in
2844             -march=*|-mcpu=*)
2845                 case "${flag#*=}" in
2846                     native)                   echo -xtarget=native       ;;
2847                     v9|niagara)               echo -xarch=sparc          ;;
2848                     ultrasparc)               echo -xarch=sparcvis       ;;
2849                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2850                     i586|pentium)             echo -xchip=pentium        ;;
2851                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2852                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2853                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2854                     pentium4*)          echo -xtarget=pentium4           ;;
2855                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2856                     *-sse3)             echo -xarch=sse3                 ;;
2857                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2858                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2859                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2860                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2861                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2862                     k8|opteron|athlon64|athlon-fx)
2863                                                echo -xarch=sse2a         ;;
2864                     athlon*)                   echo -xarch=pentium_proa  ;;
2865                 esac
2866                 ;;
2867             -std=c99)             echo -xc99              ;;
2868             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2869             -fPIC)                echo -KPIC -xcode=pic32 ;;
2870             -W*,*)                echo $flag              ;;
2871             -f*-*|-W*|-mimpure-text)                      ;;
2872             -shared)              echo -G                 ;;
2873             *)                    echo $flag              ;;
2874         esac
2875     done
2876 }
2877
2878 tms470_flags(){
2879     for flag; do
2880         case $flag in
2881             -march=*|-mcpu=*)
2882                 case "${flag#*=}" in
2883                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2884                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2885                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2886                     armv6*|arm11*)          echo -mv=6   ;;
2887                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2888                                             echo -mv=5e  ;;
2889                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2890                 esac
2891                 ;;
2892             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2893             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2894             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2895             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2896             -msoft-float)   echo --float_support=vfplib       ;;
2897             -O[0-3]|-mf=*)  echo $flag                        ;;
2898             -g)             echo -g -mn                       ;;
2899             -pds=*)         echo $flag                        ;;
2900             -D*|-I*)        echo $flag                        ;;
2901             --gcc|--abi=*)  echo $flag                        ;;
2902             -me)            echo $flag                        ;;
2903         esac
2904     done
2905 }
2906
2907 probe_cc(){
2908     pfx=$1
2909     _cc=$2
2910
2911     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2912     unset _ld_o _ldflags _ld_lib _ld_path
2913     unset _depflags _DEPCMD _DEPFLAGS
2914     _flags_filter=echo
2915
2916     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2917         _type=llvm_gcc
2918         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2919         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2920         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2921         _cflags_speed='-O3'
2922         _cflags_size='-Os'
2923     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2924         _type=gcc
2925         gcc_version=$($_cc --version | head -n1)
2926         gcc_basever=$($_cc -dumpversion)
2927         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2928         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2929         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2930         if ! $_cc -dumpversion | grep -q '^2\.'; then
2931             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2932         fi
2933         _cflags_speed='-O3'
2934         _cflags_size='-Os'
2935     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2936         _type=icc
2937         _ident=$($_cc --version | head -n1)
2938         _depflags='-MMD'
2939         _cflags_speed='-O3'
2940         _cflags_size='-Os'
2941         _cflags_noopt='-O1'
2942     elif $_cc -v 2>&1 | grep -q xlc; then
2943         _type=xlc
2944         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2945         _cflags_speed='-O5'
2946         _cflags_size='-O5 -qcompact'
2947     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2948         _type=ccc
2949         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2950         _DEPFLAGS='-M'
2951         _cflags_speed='-fast'
2952         _cflags_size='-O1'
2953         _flags_filter=ccc_flags
2954     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2955         test -d "$sysroot" || die "No valid sysroot specified."
2956         _type=armcc
2957         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
2958         armcc_conf="$PWD/armcc.conf"
2959         $_cc --arm_linux_configure                 \
2960              --arm_linux_config_file="$armcc_conf" \
2961              --configure_sysroot="$sysroot"        \
2962              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2963              die "Error creating armcc configuration file."
2964         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2965         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2966         as_default="${cross_prefix}gcc"
2967         _depflags='-MMD'
2968         _cflags_speed='-O3'
2969         _cflags_size='-Os'
2970     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2971         _type=tms470
2972         _ident=$($_cc -version | head -n1 | tr -s ' ')
2973         _flags='--gcc --abi=eabi -me'
2974         _cc_e='-ppl -fe=$@'
2975         _cc_o='-fe=$@'
2976         _depflags='-ppa -ppd=$(@:.o=.d)'
2977         _cflags_speed='-O3 -mf=5'
2978         _cflags_size='-O3 -mf=2'
2979         _flags_filter=tms470_flags
2980     elif $_cc -v 2>&1 | grep -q clang; then
2981         _type=clang
2982         _ident=$($_cc --version | head -n1)
2983         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2984         _cflags_speed='-O3'
2985         _cflags_size='-Os'
2986     elif $_cc -V 2>&1 | grep -q Sun; then
2987         _type=suncc
2988         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2989         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2990         _DEPFLAGS='-xM1 -xc99'
2991         _ldflags='-std=c99'
2992         _cflags_speed='-O5'
2993         _cflags_size='-O5 -xspace'
2994         _flags_filter=suncc_flags
2995     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2996         _type=pathscale
2997         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2998         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2999         _cflags_speed='-O2'
3000         _cflags_size='-Os'
3001         _flags_filter='filter_out -Wdisabled-optimization'
3002     elif $_cc -v 2>&1 | grep -q Open64; then
3003         _type=open64
3004         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3005         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3006         _cflags_speed='-O2'
3007         _cflags_size='-Os'
3008         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3009     elif $_cc -V 2>&1 | grep -q Portland; then
3010         _type=pgi
3011         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3012         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3013         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3014         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3015         _cflags_noopt="-O1"
3016         _flags_filter=pgi_flags
3017     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3018         _type=armasm
3019         _ident=$($_cc | head -n1)
3020         # 4509: "This form of conditional instruction is deprecated"
3021         _flags="-nologo -ignore 4509"
3022         _flags_filter=armasm_flags
3023     elif $_cc 2>&1 | grep -q Microsoft; then
3024         _type=msvc
3025         _ident=$($_cc 2>&1 | head -n1)
3026         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3027         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3028         _cflags_speed="-O2"
3029         _cflags_size="-O1"
3030         if $_cc 2>&1 | grep -q Linker; then
3031             _ld_o='-out:$@'
3032         else
3033             _ld_o='-Fe$@'
3034         fi
3035         _cc_o='-Fo$@'
3036         _cc_e='-P -Fi$@'
3037         _flags_filter=msvc_flags
3038         _ld_lib='lib%.a'
3039         _ld_path='-libpath:'
3040         _flags='-nologo'
3041         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3042     elif $_cc 2>&1 | grep -q Intel; then
3043         _type=icl
3044         _ident=$($_cc 2>&1 | head -n1)
3045         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3046         # Not only is O3 broken on 13.x+ but it is slower on all previous
3047         # versions (tested) as well.
3048         _cflags_speed="-O2"
3049         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3050         if $_cc 2>&1 | grep -q Linker; then
3051             _ld_o='-out:$@'
3052         else
3053             _ld_o='-Fe$@'
3054         fi
3055         _cc_o='-Fo$@'
3056         _cc_e='-P'
3057         _flags_filter=icl_flags
3058         _ld_lib='lib%.a'
3059         _ld_path='-libpath:'
3060         # -Qdiag-error to make icl error when seeing certain unknown arguments
3061         _flags='-nologo -Qdiag-error:4044,10157'
3062         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3063         # with MSVC which enables it by default.
3064         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3065     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3066         _type=cparser
3067         _ident=$($_cc --version | head -n1)
3068         _depflags='-MMD'
3069         _cflags_speed='-O4'
3070         _cflags_size='-O2'
3071         _flags_filter=cparser_flags
3072     fi
3073
3074     eval ${pfx}_type=\$_type
3075     eval ${pfx}_ident=\$_ident
3076 }
3077
3078 set_ccvars(){
3079     eval ${1}_C=\${_cc_c-\${${1}_C}}
3080     eval ${1}_E=\${_cc_e-\${${1}_E}}
3081     eval ${1}_O=\${_cc_o-\${${1}_O}}
3082
3083     if [ -n "$_depflags" ]; then
3084         eval ${1}_DEPFLAGS=\$_depflags
3085     else
3086         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3087         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3088         eval DEP${1}FLAGS=\$_flags
3089     fi
3090 }
3091
3092 probe_cc cc "$cc"
3093 cflags_filter=$_flags_filter
3094 cflags_speed=$_cflags_speed
3095 cflags_size=$_cflags_size
3096 cflags_noopt=$_cflags_noopt
3097 add_cflags $_flags $_cflags
3098 cc_ldflags=$_ldflags
3099 set_ccvars CC
3100
3101 probe_cc hostcc "$host_cc"
3102 host_cflags_filter=$_flags_filter
3103 add_host_cflags  $_flags $_cflags
3104 set_ccvars HOSTCC
3105
3106 test -n "$cc_type" && enable $cc_type ||
3107     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3108
3109 : ${as_default:=$cc}
3110 : ${dep_cc_default:=$cc}
3111 : ${ld_default:=$cc}
3112 : ${host_ld_default:=$host_cc}
3113 set_default ar as dep_cc ld host_ld
3114
3115 probe_cc as "$as"
3116 asflags_filter=$_flags_filter
3117 add_asflags $_flags $_cflags
3118 set_ccvars AS
3119
3120 probe_cc ld "$ld"
3121 ldflags_filter=$_flags_filter
3122 add_ldflags $_flags $_ldflags
3123 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3124 LD_O=${_ld_o-$LD_O}
3125 LD_LIB=${_ld_lib-$LD_LIB}
3126 LD_PATH=${_ld_path-$LD_PATH}
3127
3128 probe_cc hostld "$host_ld"
3129 host_ldflags_filter=$_flags_filter
3130 add_host_ldflags $_flags $_ldflags
3131 HOSTLD_O=${_ld_o-$HOSTLD_O}
3132
3133 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3134     probe_cc depcc "$dep_cc"
3135     CCDEP=${_DEPCMD:-$DEPCMD}
3136     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3137     DEPCCFLAGS=$_flags
3138 fi
3139
3140 if $ar 2>&1 | grep -q Microsoft; then
3141     arflags="-nologo"
3142     ar_o='-out:$@'
3143 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3144     arflags="rq"
3145     ar_o='$@'
3146 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3147     arflags='-Xany -r -c'
3148     ar_o='$@'
3149 else
3150     arflags="rc"
3151     ar_o='$@'
3152 fi
3153
3154 add_cflags $extra_cflags
3155 add_asflags $extra_cflags
3156
3157 if test -n "$sysroot"; then
3158     case "$cc_type" in
3159         gcc|llvm_gcc|clang)
3160             add_cppflags --sysroot="$sysroot"
3161             add_ldflags --sysroot="$sysroot"
3162         ;;
3163         tms470)
3164             add_cppflags -I"$sysinclude"
3165             add_ldflags  --sysroot="$sysroot"
3166         ;;
3167     esac
3168 fi
3169
3170 if test "$cpu" = host; then
3171     enabled cross_compile &&
3172         die "--cpu=host makes no sense when cross-compiling."
3173
3174     case "$cc_type" in
3175         gcc|llvm_gcc)
3176             check_native(){
3177                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3178                 sed -n "/cc1.*$1=/{
3179                             s/.*$1=\\([^ ]*\\).*/\\1/
3180                             p
3181                             q
3182                         }" $TMPE
3183             }
3184             cpu=$(check_native -march || check_native -mcpu)
3185         ;;
3186     esac
3187
3188     test "${cpu:-host}" = host &&
3189         die "--cpu=host not supported with compiler $cc"
3190 fi
3191
3192 # Deal with common $arch aliases
3193 case "$arch" in
3194     aarch64|arm64)
3195         arch="aarch64"
3196     ;;
3197     arm*)
3198         arch="arm"
3199     ;;
3200     mips*|IP*)
3201         arch="mips"
3202     ;;
3203     parisc*|hppa*)
3204         arch="parisc"
3205     ;;
3206     "Power Macintosh"|ppc*|powerpc*)
3207         arch="ppc"
3208     ;;
3209     s390|s390x)
3210         arch="s390"
3211     ;;
3212     sh4|sh)
3213         arch="sh4"
3214     ;;
3215     sun4u|sparc*)
3216         arch="sparc"
3217     ;;
3218     tilegx|tile-gx)
3219         arch="tilegx"
3220     ;;
3221     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3222         arch="x86"
3223     ;;
3224 esac
3225
3226 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3227 enable $arch
3228
3229 # Add processor-specific flags
3230 if enabled aarch64; then
3231
3232     case $cpu in
3233         armv*)
3234             cpuflags="-march=$cpu"
3235         ;;
3236         *)
3237             cpuflags="-mcpu=$cpu"
3238         ;;
3239     esac
3240
3241 elif enabled alpha; then
3242
3243     cpuflags="-mcpu=$cpu"
3244
3245 elif enabled arm; then
3246
3247     check_arm_arch() {
3248         check_cpp_condition stddef.h \
3249             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3250             $cpuflags
3251     }
3252
3253     probe_arm_arch() {
3254         if   check_arm_arch 4;        then echo armv4;
3255         elif check_arm_arch 4T;       then echo armv4t;
3256         elif check_arm_arch 5;        then echo armv5;
3257         elif check_arm_arch 5E;       then echo armv5e;
3258         elif check_arm_arch 5T;       then echo armv5t;
3259         elif check_arm_arch 5TE;      then echo armv5te;
3260         elif check_arm_arch 5TEJ;     then echo armv5te;
3261         elif check_arm_arch 6;        then echo armv6;
3262         elif check_arm_arch 6J;       then echo armv6j;
3263         elif check_arm_arch 6K;       then echo armv6k;
3264         elif check_arm_arch 6Z;       then echo armv6z;
3265         elif check_arm_arch 6ZK;      then echo armv6zk;
3266         elif check_arm_arch 6T2;      then echo armv6t2;
3267         elif check_arm_arch 7;        then echo armv7;
3268         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3269         elif check_arm_arch 7S;       then echo armv7-a;
3270         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3271         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3272         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3273         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3274         fi
3275     }
3276
3277     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3278
3279     case $cpu in
3280         armv*)
3281             cpuflags="-march=$cpu"
3282             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3283         ;;
3284         *)
3285             cpuflags="-mcpu=$cpu"
3286             case $cpu in
3287                 cortex-a*)                               subarch=armv7a  ;;
3288                 cortex-r*)                               subarch=armv7r  ;;
3289                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3290                 arm11*)                                  subarch=armv6   ;;
3291                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3292                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3293                 *)                             subarch=$(probe_arm_arch) ;;
3294             esac
3295         ;;
3296     esac
3297
3298     case "$subarch" in
3299         armv5t*)    enable fast_clz                ;;
3300         armv[6-8]*) enable fast_clz fast_unaligned ;;
3301     esac
3302
3303 elif enabled avr32; then
3304
3305     case $cpu in
3306         ap7[02]0[0-2])
3307             subarch="avr32_ap"
3308             cpuflags="-mpart=$cpu"
3309         ;;
3310         ap)
3311             subarch="avr32_ap"
3312             cpuflags="-march=$cpu"
3313         ;;
3314         uc3[ab]*)
3315             subarch="avr32_uc"
3316             cpuflags="-mcpu=$cpu"
3317         ;;
3318         uc)
3319             subarch="avr32_uc"
3320             cpuflags="-march=$cpu"
3321         ;;
3322     esac
3323
3324 elif enabled bfin; then
3325
3326     cpuflags="-mcpu=$cpu"
3327
3328 elif enabled mips; then
3329
3330     cpuflags="-march=$cpu"
3331
3332 elif enabled ppc; then
3333
3334     disable ldbrx
3335
3336     case $(tolower $cpu) in
3337         601|ppc601|powerpc601)
3338             cpuflags="-mcpu=601"
3339             disable altivec
3340         ;;
3341         603*|ppc603*|powerpc603*)
3342             cpuflags="-mcpu=603"
3343             disable altivec
3344         ;;
3345         604*|ppc604*|powerpc604*)
3346             cpuflags="-mcpu=604"
3347             disable altivec
3348         ;;
3349         g3|75*|ppc75*|powerpc75*)
3350             cpuflags="-mcpu=750"
3351             disable altivec
3352         ;;
3353         g4|745*|ppc745*|powerpc745*)
3354             cpuflags="-mcpu=7450"
3355             disable vsx
3356         ;;
3357         74*|ppc74*|powerpc74*)
3358             cpuflags="-mcpu=7400"
3359             disable vsx
3360         ;;
3361         g5|970|ppc970|powerpc970)
3362             cpuflags="-mcpu=970"
3363             disable vsx
3364         ;;
3365         power[3-6]*)
3366             cpuflags="-mcpu=$cpu"
3367             disable vsx
3368         ;;
3369         power[7-8]*)
3370             cpuflags="-mcpu=$cpu"
3371             enable ldbrx
3372         ;;
3373         cell)
3374             cpuflags="-mcpu=cell"
3375             enable ldbrx
3376             disable vsx
3377         ;;
3378         e500mc)
3379             cpuflags="-mcpu=e500mc"
3380             disable altivec
3381         ;;
3382         e500v2)
3383             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3384             disable altivec
3385             disable dcbzl
3386         ;;
3387         e500)
3388             cpuflags="-mcpu=8540 -mhard-float"
3389             disable altivec
3390             disable dcbzl
3391         ;;
3392     esac
3393
3394 elif enabled sparc; then
3395
3396     case $cpu in
3397         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3398             cpuflags="-mcpu=$cpu"
3399         ;;
3400         ultrasparc*|niagara[234])
3401             cpuflags="-mcpu=$cpu"
3402         ;;
3403     esac
3404
3405 elif enabled x86; then
3406
3407     case $cpu in
3408         i[345]86|pentium)
3409             cpuflags="-march=$cpu"
3410             disable i686
3411             disable mmx
3412         ;;
3413         # targets that do NOT support nopl and conditional mov (cmov)
3414         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3415             cpuflags="-march=$cpu"
3416             disable i686
3417         ;;
3418         # targets that do support nopl and conditional mov (cmov)
3419         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3420             cpuflags="-march=$cpu"
3421             enable i686
3422             enable fast_cmov
3423         ;;
3424         # targets that do support conditional mov but on which it's slow
3425         pentium4|pentium4m|prescott|nocona)
3426             cpuflags="-march=$cpu"
3427             enable i686
3428             disable fast_cmov
3429         ;;
3430     esac
3431
3432 fi
3433
3434 if [ "$cpu" != generic ]; then
3435     add_cflags  $cpuflags
3436     add_asflags $cpuflags
3437 fi
3438
3439 # compiler sanity check
3440 check_exec <<EOF
3441 int main(void){ return 0; }
3442 EOF
3443 if test "$?" != 0; then
3444     echo "$cc is unable to create an executable file."
3445     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3446         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3447         echo "Only do this if you know what cross compiling means."
3448     fi
3449     die "C compiler test failed."
3450 fi
3451
3452 add_cppflags -D_ISOC99_SOURCE
3453 check_cflags -std=c99
3454 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3455 #include <stdlib.h>
3456 EOF
3457 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3458 #include <stdlib.h>
3459 EOF
3460
3461 add_host_cppflags -D_ISOC99_SOURCE
3462 check_host_cflags -std=c99
3463 check_host_cflags -Wall
3464 check_host_cflags -O3
3465
3466 check_64bit(){
3467     arch32=$1
3468     arch64=$2
3469     expr=$3
3470     check_code cc "" "int test[2*($expr) - 1]" &&
3471         subarch=$arch64 || subarch=$arch32
3472 }
3473
3474 case "$arch" in
3475     aarch64|alpha|ia64)
3476         spic=$shared
3477     ;;
3478     mips)
3479         check_64bit mips mips64 '_MIPS_SIM > 1'
3480         spic=$shared
3481     ;;
3482     parisc)
3483         check_64bit parisc parisc64 'sizeof(void *) > 4'
3484         spic=$shared
3485     ;;
3486     ppc)
3487         check_64bit ppc ppc64 'sizeof(void *) > 4'
3488         spic=$shared
3489     ;;
3490     s390)
3491         check_64bit s390 s390x 'sizeof(void *) > 4'
3492         spic=$shared
3493     ;;
3494     sparc)
3495         check_64bit sparc sparc64 'sizeof(void *) > 4'
3496         spic=$shared
3497     ;;
3498     x86)
3499         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3500         if test "$subarch" = "x86_64"; then
3501             spic=$shared
3502         fi
3503     ;;
3504 esac
3505
3506 enable $subarch
3507 enabled spic && enable_weak pic
3508
3509 # OS specific
3510 case $target_os in
3511     aix)
3512         SHFLAGS=-shared
3513         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3514         enabled shared && add_ldflags -Wl,-brtl
3515         ;;
3516     android)
3517         disable symver
3518         enable section_data_rel_ro
3519         SLIB_INSTALL_NAME='$(SLIBNAME)'
3520         SLIB_INSTALL_LINKS=
3521         # soname not set on purpose
3522         SHFLAGS=-shared
3523         ;;
3524     haiku)
3525         prefix_default="/boot/common"
3526         network_extralibs="-lnetwork"
3527         host_libs=
3528         ;;
3529     sunos)
3530         SHFLAGS='-shared -Wl,-h,$$(@F)'
3531         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3532         network_extralibs="-lsocket -lnsl"
3533         # When using suncc to build, the Solaris linker will mark
3534         # an executable with each instruction set encountered by
3535         # the Solaris assembler.  As our libraries contain their own
3536         # guards for processor-specific code, instead suppress
3537         # generation of the HWCAPS ELF section on Solaris x86 only.
3538         enabled_all suncc x86 &&
3539             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3540             add_ldflags -Wl,-M,mapfile
3541         nm_default='nm -P -g'
3542         ;;
3543     netbsd)
3544         disable symver
3545         oss_indev_extralibs="-lossaudio"
3546         oss_outdev_extralibs="-lossaudio"
3547         ;;
3548     openbsd|bitrig)
3549         disable symver
3550         SHFLAGS='-shared'
3551         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3552         SLIB_INSTALL_LINKS=
3553         oss_indev_extralibs="-lossaudio"
3554         oss_outdev_extralibs="-lossaudio"
3555         ;;
3556     dragonfly)
3557         disable symver
3558         ;;
3559     freebsd)
3560         ;;
3561     bsd/os)
3562         add_extralibs -lpoll -lgnugetopt
3563         ;;
3564     darwin)
3565         enabled ppc && add_asflags -force_cpusubtype_ALL
3566         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3567         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3568         add_ldflags -Wl,-dynamic,-search_paths_first
3569         SLIBSUF=".dylib"
3570         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3571         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3572         objformat="macho"
3573         enabled x86_64 && objformat="macho64"
3574         enabled_any pic shared ||
3575             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3576         ;;
3577     mingw32*)
3578         if test $target_os = "mingw32ce"; then
3579             disable network
3580         else
3581             target_os=mingw32
3582         fi
3583         LIBTARGET=i386
3584         if enabled x86_64; then
3585             LIBTARGET="i386:x86-64"
3586         elif enabled arm; then
3587             LIBTARGET=arm-wince
3588         fi
3589         check_ldflags -Wl,--nxcompat
3590         check_ldflags -Wl,--dynamicbase
3591         shlibdir_default="$bindir_default"
3592         SLIBPREF=""
3593         SLIBSUF=".dll"
3594         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3595         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3596         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3597         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3598         SLIB_INSTALL_LINKS=
3599         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3600         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3601         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3602         objformat="win32"
3603         dlltool="${cross_prefix}dlltool"
3604         ranlib=:
3605         enable dos_paths
3606         ;;
3607     win32|win64)
3608         disable symver
3609         if enabled shared; then
3610             # Link to the import library instead of the normal static library
3611             # for shared libs.
3612             LD_LIB='%.lib'
3613             # Cannot build both shared and static libs with MSVC or icl.
3614             disable static
3615         fi
3616         shlibdir_default="$bindir_default"
3617         SLIBPREF=""
3618         SLIBSUF=".dll"
3619         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3620         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3621         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3622         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3623         SLIB_INSTALL_LINKS=
3624         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3625         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3626         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3627         objformat="win32"
3628         ranlib=:
3629         enable dos_paths
3630         ;;
3631     cygwin*)
3632         target_os=cygwin
3633         shlibdir_default="$bindir_default"
3634         SLIBPREF="cyg"
3635         SLIBSUF=".dll"
3636         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3637         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3638         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3639         SLIB_INSTALL_LINKS=
3640         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3641         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3642         objformat="win32"
3643         enable dos_paths
3644         ;;
3645     *-dos|freedos|opendos)
3646         network_extralibs="-lsocket"
3647         objformat="coff"
3648         enable dos_paths
3649         add_cppflags -U__STRICT_ANSI__
3650         ;;
3651     linux)
3652         enable dv1394
3653         enable section_data_rel_ro
3654         ;;
3655     irix*)
3656         target_os=irix
3657         ranlib="echo ignoring ranlib"
3658         ;;
3659     os/2*)
3660         ln_s="cp -f"
3661         objformat="aout"
3662         add_cppflags -D_GNU_SOURCE
3663         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3664         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3665         LIBSUF="_s.a"
3666         SLIBPREF=""
3667         SLIBSUF=".dll"
3668         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3669         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3670         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3671             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3672             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3673             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3674             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3675         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3676             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3677         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3678         enable dos_paths
3679         ;;
3680     gnu/kfreebsd)
3681         add_cppflags -D_BSD_SOURCE
3682         ;;
3683     gnu)
3684         ;;
3685     qnx)
3686         add_cppflags -D_QNX_SOURCE
3687         network_extralibs="-lsocket"
3688         ;;
3689     symbian)
3690         SLIBSUF=".dll"
3691         enable dos_paths
3692         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3693         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3694         add_ldflags -Wl,--target1-abs,--no-undefined \
3695                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3696                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3697         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3698                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3699                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3700         ;;
3701     osf1)
3702         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3703         ;;
3704     minix)
3705         ;;
3706     plan9)
3707         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3708                      -D_REENTRANT_SOURCE        \
3709                      -D_RESEARCH_SOURCE         \
3710                      -DFD_SETSIZE=96            \
3711                      -DHAVE_SOCK_OPTS
3712         add_compat strtod.o strtod=avpriv_strtod
3713         network_extralibs='-lbsd'
3714         exeobjs=compat/plan9/main.o
3715         cp_f='cp'
3716         ;;
3717     none)
3718         ;;
3719     *)
3720         die "Unknown OS '$target_os'."
3721         ;;
3722 esac
3723
3724 # determine libc flavour
3725
3726 probe_libc(){
3727     pfx=$1
3728     pfx_no_=${pfx%_}
3729     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3730     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3731         eval ${pfx}libc_type=uclibc
3732         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3733     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3734         eval ${pfx}libc_type=glibc
3735         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3736     # MinGW headers can be installed on Cygwin, so check for newlib first.
3737     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3738         eval ${pfx}libc_type=newlib
3739         add_${pfx}cppflags -U__STRICT_ANSI__
3740     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3741     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3742         eval ${pfx}libc_type=mingw64
3743         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3744         eval test \$${pfx_no_}cc_type = "gcc" &&
3745             add_${pfx}cppflags -D__printf__=__gnu_printf__
3746     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3747          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3748         eval ${pfx}libc_type=mingw32
3749         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3750             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3751             die "ERROR: MinGW32 runtime version must be >= 3.15."
3752         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3753         eval test \$${pfx_no_}cc_type = "gcc" &&
3754             add_${pfx}cppflags -D__printf__=__gnu_printf__
3755     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3756         eval ${pfx}libc_type=msvcrt
3757         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
3758             if [ "$pfx" = host_ ]; then
3759                 add_host_cppflags -Dsnprintf=_snprintf
3760             else
3761                 add_compat strtod.o strtod=avpriv_strtod
3762                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3763                                              _snprintf=avpriv_snprintf  \
3764                                              vsnprintf=avpriv_vsnprintf
3765             fi
3766         fi
3767         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3768         # 0x601 by default unless something else is set by the user.
3769         # This can easily lead to us detecting functions only present
3770         # in such new versions and producing binaries requiring windows 7.0.
3771         # Therefore explicitly set the default to XP unless the user has
3772         # set something else on the command line.
3773         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3774             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3775     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3776         eval ${pfx}libc_type=klibc
3777     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3778         eval ${pfx}libc_type=bionic
3779     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3780         eval ${pfx}libc_type=solaris
3781         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3782     else
3783         eval ${pfx}libc_type=default
3784         add_${pfx}cppflags -D_DEFAULT_SOURCE
3785     fi
3786 }
3787
3788 probe_libc
3789 test -n "$libc_type" && enable libc_$libc_type
3790 probe_libc host_
3791 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3792
3793 case $libc_type in
3794     bionic)
3795         add_compat strtod.o strtod=avpriv_strtod
3796         ;;
3797 esac
3798
3799 # hacks for compiler/libc/os combinations
3800
3801 if enabled_all tms470 libc_glibc; then
3802     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3803     add_cppflags -D__USER_LABEL_PREFIX__=
3804     add_cppflags -D__builtin_memset=memset
3805     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3806     add_cflags   -pds=48    # incompatible redefinition of macro
3807 fi
3808
3809 if enabled_all ccc libc_glibc; then
3810     add_ldflags -Wl,-z,now  # calls to libots crash without this
3811 fi
3812
3813 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3814     add_cppflags '-I\$(SRC_PATH)/compat/float'
3815
3816 esc(){
3817     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3818 }
3819
3820 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3821
3822 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3823
3824 set_default $PATHS_LIST
3825 set_default nm
3826
3827 # we need to build at least one lib type
3828 if ! enabled_any static shared; then
3829     cat <<EOF
3830 At least one library type must be built.
3831 Specify --enable-static to build the static libraries or --enable-shared to
3832 build the shared libraries as well. To only build the shared libraries specify
3833 --disable-static in addition to --enable-shared.
3834 EOF
3835     exit 1;
3836 fi
3837
3838 die_license_disabled() {
3839     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3840 }
3841
3842 die_license_disabled gpl libcdio
3843 die_license_disabled gpl libx264
3844 die_license_disabled gpl libx265
3845 die_license_disabled gpl libxavs
3846 die_license_disabled gpl libxvid
3847 die_license_disabled gpl x11grab
3848
3849 die_license_disabled nonfree libfaac
3850 die_license_disabled nonfree libfdk_aac
3851 die_license_disabled nonfree nvenc
3852 die_license_disabled nonfree openssl
3853
3854 die_license_disabled version3 libopencore_amrnb
3855 die_license_disabled version3 libopencore_amrwb
3856 die_license_disabled version3 libvo_aacenc
3857 die_license_disabled version3 libvo_amrwbenc
3858
3859 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3860
3861 disabled optimizations || check_cflags -fomit-frame-pointer
3862
3863 enable_weak_pic() {
3864     disabled pic && return
3865     enable pic
3866     add_cppflags -DPIC
3867     case "$target_os" in
3868     mingw*|cygwin*)
3869         ;;
3870     *)
3871         add_cflags -fPIC
3872         ;;
3873     esac
3874     add_asflags  -fPIC
3875 }
3876
3877 enabled pic && enable_weak_pic
3878
3879 check_cc <<EOF || die "Symbol mangling check failed."
3880 int ff_extern;
3881 EOF
3882 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3883 extern_prefix=${sym%%ff_extern*}
3884
3885 check_cc <<EOF && enable_weak inline_asm
3886 void foo(void) { __asm__ volatile ("" ::); }
3887 EOF
3888
3889 _restrict=
3890 for restrict_keyword in restrict __restrict__ __restrict; do
3891     check_cc <<EOF && _restrict=$restrict_keyword && break
3892 void foo(char * $restrict_keyword p);
3893 EOF
3894 done
3895
3896 check_cc <<EOF && enable pragma_deprecated
3897 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3898 EOF
3899
3900 check_cc <<EOF && enable attribute_packed
3901 struct { int x; } __attribute__((packed)) x;
3902 EOF
3903
3904 check_cc <<EOF && enable attribute_may_alias
3905 union { int x; } __attribute__((may_alias)) x;
3906 EOF
3907
3908 check_cc <<EOF || die "endian test failed"
3909 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3910 EOF
3911 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3912
3913 check_gas() {
3914     log "check_gas using '$as' as AS"
3915     # :vararg is used on aarch64, arm and ppc altivec
3916     check_as <<EOF || return 1
3917 .macro m n, y:vararg=0
3918 \n: .int \y
3919 .endm
3920 m x
3921 EOF
3922     # .altmacro is only used in arm asm
3923     ! enabled arm || check_as <<EOF || return 1
3924 .altmacro
3925 EOF
3926     enable gnu_as
3927     return 0
3928 }
3929
3930 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
3931     nogas=:
3932     enabled_any arm aarch64 && nogas=die
3933     enabled_all ppc altivec && nogas=warn
3934     as_noop=-v
3935
3936     case $as_type in
3937         arm*) gaspp_as_type=armasm; as_noop=-h ;;
3938         gcc)  gaspp_as_type=gas ;;
3939         *)    gaspp_as_type=$as_type ;;
3940     esac
3941
3942     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
3943
3944     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
3945         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
3946
3947     if ! check_gas ; then
3948         as=${gas:=$as}
3949         check_gas || \
3950             $nogas "GNU assembler not found, install/update gas-preprocessor"
3951     fi
3952
3953     check_as <<EOF && enable as_func
3954 .func test
3955 .endfunc
3956 EOF
3957 fi
3958
3959 check_inline_asm inline_asm_labels '"1:\n"'
3960
3961 if enabled aarch64; then
3962     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3963     # internal assembler in clang 3.3 does not support this instruction
3964     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3965     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3966
3967     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3968
3969 elif enabled alpha; then
3970
3971     check_cflags -mieee
3972
3973 elif enabled arm; then
3974
3975     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3976     enabled thumb && check_cflags -mthumb || check_cflags -marm
3977
3978     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3979         enable vfp_args
3980     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3981         case "${cross_prefix:-$cc}" in
3982             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3983             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3984 __asm__ (".eabi_attribute 28, 1");
3985 int main(void) { return 0; }
3986 EOF
3987         esac
3988         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3989     fi
3990
3991     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3992     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3993     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3994     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3995     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3996     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3997
3998     [ $target_os = linux ] || [ $target_os = android ] ||
3999         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4000             $ARCH_EXT_LIST_ARM
4001
4002     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4003
4004     check_as <<EOF && enable as_dn_directive
4005 ra .dn d0.i16
4006 .unreq ra
4007 EOF
4008
4009     # llvm's integrated assembler supports .object_arch from llvm 3.5
4010     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4011 .object_arch armv4
4012 EOF
4013
4014     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4015
4016 elif enabled mips; then
4017
4018     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4019
4020 elif enabled parisc; then
4021
4022     if enabled gcc; then
4023         case $($cc -dumpversion) in
4024             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4025         esac
4026     fi
4027
4028 elif enabled ppc; then
4029
4030     enable local_aligned_8 local_aligned_16
4031
4032     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4033     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4034     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4035     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4036
4037     # AltiVec flags: The FSF version of GCC differs from the Apple version
4038     if enabled altivec; then
4039         check_cflags -maltivec -mabi=altivec &&
4040         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4041         check_cflags -faltivec
4042
4043         # check if our compiler supports Motorola AltiVec C API
4044         check_cc <<EOF || disable altivec
4045 $inc_altivec_h
4046 int main(void) {
4047     vector signed int v1 = (vector signed int) { 0 };
4048     vector signed int v2 = (vector signed int) { 1 };
4049     v1 = vec_add(v1, v2);
4050     return 0;
4051 }
4052 EOF
4053
4054         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4055     fi
4056
4057     if enabled vsx; then
4058         check_cflags -mvsx &&
4059         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4060     fi
4061
4062     if enabled power8; then
4063         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4064     fi
4065
4066 elif enabled x86; then
4067
4068     check_builtin rdtsc    intrin.h   "__rdtsc()"
4069     check_builtin mm_empty mmintrin.h "_mm_empty()"
4070
4071     enable local_aligned_8 local_aligned_16
4072
4073     # check whether EBP is available on x86
4074     # As 'i' is stored on the stack, this program will crash
4075     # if the base pointer is used to access it because the
4076     # base pointer is cleared in the inline assembly code.
4077     check_exec_crash <<EOF && enable ebp_available
4078 volatile int i=0;
4079 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4080 return i;
4081 EOF
4082
4083     # check whether EBX is available on x86
4084     check_inline_asm ebx_available '""::"b"(0)' &&
4085         check_inline_asm ebx_available '"":::"%ebx"'
4086
4087     # check whether xmm clobbers are supported
4088     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4089
4090     # check whether binutils is new enough to compile SSSE3/MMXEXT
4091     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4092     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4093
4094     if ! disabled_any asm mmx yasm; then
4095         if check_cmd $yasmexe --version; then
4096             enabled x86_64 && yasm_extra="-m amd64"
4097             yasm_debug="-g dwarf2"
4098         elif check_cmd nasm -v; then
4099             yasmexe=nasm
4100             yasm_debug="-g -F dwarf"
4101             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4102         fi
4103
4104         YASMFLAGS="-f $objformat $yasm_extra"
4105         enabled pic               && append YASMFLAGS "-DPIC"
4106         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4107         case "$objformat" in
4108             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4109         esac
4110
4111         check_yasm "movbe ecx, [5]" && enable yasm ||
4112             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4113         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4114         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4115         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4116         check_yasm "CPU amdnop" || disable cpunop
4117     fi
4118
4119     case "$cpu" in
4120         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4121             disable fast_clz
4122         ;;
4123     esac
4124
4125 fi
4126
4127 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4128
4129 check_ldflags -Wl,--as-needed
4130
4131 if check_func dlopen; then
4132     ldl=
4133 elif check_func dlopen -ldl; then
4134     ldl=-ldl
4135 fi
4136
4137 if ! disabled network; then
4138     check_func getaddrinfo $network_extralibs
4139     check_func getservbyport $network_extralibs
4140     check_func inet_aton $network_extralibs
4141
4142     check_type netdb.h "struct addrinfo"
4143     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4144     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4145     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4146     check_type poll.h "struct pollfd"
4147     check_type netinet/sctp.h "struct sctp_event_subscribe"
4148     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4149     check_type netinet/in.h "struct sockaddr_in6"
4150     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4151     check_type "sys/types.h sys/socket.h" socklen_t
4152
4153     # Prefer arpa/inet.h over winsock2
4154     if check_header arpa/inet.h ; then
4155         check_func closesocket
4156     elif check_header winsock2.h ; then
4157         check_func_headers winsock2.h closesocket -lws2 &&
4158             network_extralibs="-lws2" ||
4159         { check_func_headers winsock2.h closesocket -lws2_32 &&
4160             network_extralibs="-lws2_32"; } || disable winsock2_h network
4161         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4162
4163         check_type ws2tcpip.h socklen_t
4164         check_type ws2tcpip.h "struct addrinfo"
4165         check_type ws2tcpip.h "struct group_source_req"
4166         check_type ws2tcpip.h "struct ip_mreq_source"
4167         check_type ws2tcpip.h "struct ipv6_mreq"
4168         check_type winsock2.h "struct pollfd"
4169         check_struct winsock2.h "struct sockaddr" sa_len
4170         check_type ws2tcpip.h "struct sockaddr_in6"
4171         check_type ws2tcpip.h "struct sockaddr_storage"
4172     else
4173         disable network
4174     fi
4175 fi
4176
4177 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4178 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4179 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4180 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4181
4182 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4183 check_func  ${malloc_prefix}memalign            && enable memalign
4184 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4185
4186 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4187     check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4188
4189 check_func  fcntl
4190 check_func  fork
4191 check_func  gethrtime
4192 check_func  getopt
4193 check_func  getrusage
4194 check_func  gettimeofday
4195 check_func  gmtime_r
4196 check_func  isatty
4197 check_func  localtime_r
4198 check_func  mach_absolute_time
4199 check_func  mkstemp
4200 check_func  mmap
4201 check_func  mprotect
4202 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4203 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4204 check_func  sched_getaffinity
4205 check_func  setrlimit
4206 check_func  strerror_r
4207 check_func  sysconf
4208 check_func  sysctl
4209 check_func  usleep
4210
4211 check_func_headers io.h setmode
4212 check_func_headers stdlib.h getenv
4213
4214 check_func_headers windows.h CoTaskMemFree -lole32
4215 check_func_headers windows.h GetProcessAffinityMask
4216 check_func_headers windows.h GetProcessTimes
4217 check_func_headers windows.h GetSystemTimeAsFileTime
4218 check_func_headers windows.h LoadLibrary
4219 check_func_headers windows.h MapViewOfFile
4220 check_func_headers windows.h SetConsoleTextAttribute
4221 check_func_headers windows.h Sleep
4222 check_func_headers windows.h VirtualAlloc
4223 check_struct windows.h "CONDITION_VARIABLE" Ptr
4224
4225 check_header direct.h
4226 check_header dlfcn.h
4227 check_header d3d11.h
4228 check_header dxva.h
4229 check_header dxva2api.h
4230 check_header io.h
4231 check_header mach/mach_time.h
4232 check_header malloc.h
4233 check_header poll.h
4234 check_header sys/mman.h
4235 check_header sys/param.h
4236 check_header sys/resource.h
4237 check_header sys/select.h
4238 check_header sys/time.h
4239 check_header sys/un.h
4240 check_header unistd.h
4241 check_header valgrind/valgrind.h
4242 check_header vdpau/vdpau.h
4243 check_header vdpau/vdpau_x11.h
4244 check_header VideoDecodeAcceleration/VDADecoder.h
4245 check_header windows.h
4246 check_header X11/extensions/XvMClib.h
4247
4248 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4249 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4250 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4251
4252 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4253
4254 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC"
4255 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4256 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0600
4257
4258 if ! disabled w32threads && ! enabled pthreads; then
4259     check_func_headers "windows.h process.h" _beginthreadex &&
4260         enable w32threads || disable w32threads
4261 fi
4262
4263 # check for some common methods of building with pthread support
4264 # do this before the optional library checks as some of them require pthreads
4265 if ! disabled pthreads && ! enabled w32threads; then
4266     enable pthreads
4267     if check_func pthread_join -pthread; then
4268         add_cflags -pthread
4269         add_extralibs -pthread
4270     elif check_func pthread_join -pthreads; then
4271         add_cflags -pthreads
4272         add_extralibs -pthreads
4273     elif check_func pthread_join -lpthreadGC2; then
4274         add_extralibs -lpthreadGC2
4275     elif check_lib pthread.h pthread_join -lpthread; then
4276         :
4277     elif ! check_func pthread_join; then
4278         disable pthreads
4279     fi
4280 fi
4281
4282 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4283 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4284
4285 check_lib math.h sin -lm && LIBM="-lm"
4286 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4287
4288 atan2f_args=2
4289 ldexpf_args=2
4290 powf_args=2
4291
4292 for func in $MATH_FUNCS; do
4293     eval check_mathfunc $func \${${func}_args:-1}
4294 done
4295
4296 # these are off by default, so fail if requested and not available
4297 enabled avisynth          && { check_lib2 "avisynth/avisynth_c.h windows.h" LoadLibrary ||
4298                                check_lib2 "avxsynth/avxsynth_c.h dlfcn.h" dlopen -ldl   ||
4299                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4300 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4301 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4302 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4303 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4304 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4305 enabled libfdk_aac        && require_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4306 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4307 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4308 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4309                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4310                                done || die "ERROR: libgsm not found"; }
4311 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4312 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
4313 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4314 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4315 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4316 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4317 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
4318 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4319                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4320 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4321 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4322 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4323 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4324 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
4325 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4326 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4327 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4328 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4329 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4330 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4331 enabled libvpx            && require_pkg_config "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version && {
4332     enabled libvpx_vp8_decoder && {
4333         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
4334             disable libvpx_vp8_decoder;
4335     }
4336     enabled libvpx_vp8_encoder && {
4337         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
4338             disable libvpx_vp8_encoder;
4339     }
4340     enabled libvpx_vp9_decoder && {
4341         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
4342             disable libvpx_vp9_decoder;
4343     }
4344     enabled libvpx_vp9_encoder && {
4345         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
4346             disable libvpx_vp9_encoder;
4347     }
4348     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
4349         die "libvpx enabled but no supported decoders found"
4350     fi
4351 }
4352 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4353 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4354 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4355                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4356                                die "ERROR: libx264 version must be >= 0.118."; } &&
4357                              { check_cpp_condition x264.h "X264_MPEG2" &&
4358                                enable libx262; }
4359 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
4360                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
4361                                die "ERROR: libx265 version must be >= 57."; }
4362 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4363 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4364 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4365                                 { ! enabled cross_compile && {
4366                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
4367                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
4368                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
4369                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
4370                                die "ERROR: mmal not found"; }
4371 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4372                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4373                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4374                                die "ERROR: openssl not found"; }
4375
4376 if enabled gnutls; then
4377     { check_lib2 gmp.h mpz_export -lgmp && enable gmp; } ||
4378     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4379 fi
4380
4381 # libdc1394 check
4382 if enabled libdc1394; then
4383     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
4384         enable libdc1394_2; } ||
4385     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4386         enable libdc1394_1; } ||
4387     die "ERROR: No version of libdc1394 found "
4388 fi
4389
4390 if enabled nvenc; then
4391     check_header cuda.h || die "ERROR: cuda.h not found.";
4392     check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found.";
4393     check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 5" ||
4394         die "ERROR: NVENC API version 4 or older is not supported";
4395 fi
4396
4397 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4398     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4399     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4400     enable sdl
4401 fi
4402
4403 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4404 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4405
4406 check_header linux/fb.h
4407 check_header linux/videodev2.h
4408 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4409
4410 check_header sys/videoio.h
4411
4412 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4413 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4414 # w32api 3.12 had it defined wrong
4415 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4416
4417 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4418 { check_header dev/bktr/ioctl_meteor.h &&
4419   check_header dev/bktr/ioctl_bt848.h; } ||
4420 { check_header machine/ioctl_meteor.h &&
4421   check_header machine/ioctl_bt848.h; } ||
4422 { check_header dev/video/meteor/ioctl_meteor.h &&
4423   check_header dev/video/bktr/ioctl_bt848.h; } ||
4424 check_header dev/ic/bt8xx.h
4425
4426 check_header sndio.h
4427 check_header sys/soundcard.h
4428 check_header soundcard.h
4429
4430 enabled_any alsa_indev alsa_outdev &&
4431     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4432
4433 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4434     check_func jack_port_get_latency_range -ljack
4435
4436 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4437
4438 if enabled libcdio; then
4439     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4440     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4441     die "ERROR: No usable libcdio/cdparanoia found"
4442 fi
4443
4444 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4445
4446 if enabled libxcb || enabled x11grab && ! disabled libxcb; then
4447     check_pkg_config xcb-shape xcb/shape.h xcb_shape_rectangles || {
4448         enabled libxcb && die "ERROR: libxcb not found";
4449     } && disable x11grab && enable libxcb
4450
4451     disabled libxcb_shm ||
4452         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
4453             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
4454         } && check_header sys/shm.h && enable libxcb_shm
4455
4456     disabled libxcb_xfixes ||
4457         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
4458             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
4459         } && enable libxcb_xfixes
4460
4461     add_cflags "$xcb_event_cflags $xcb_shm_cflags $xcb_xfixes_cflags"
4462     add_extralibs "$xcb_event_libs $xcb_shm_libs $xcb_xfixes_libs"
4463 fi
4464
4465 if enabled x11grab; then
4466     enabled xlib || die "ERROR: Xlib not found"
4467     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
4468     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
4469 fi
4470
4471 enabled vaapi && enabled xlib &&
4472     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
4473     enable vaapi_x11
4474
4475 enabled vdpau &&
4476     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4477     disable vdpau
4478
4479 enabled vdpau && enabled xlib &&
4480     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4481     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4482     enable vdpau_x11
4483
4484 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4485
4486 # add some useful compiler flags if supported
4487 check_cflags -Wdeclaration-after-statement
4488 check_cflags -Wall
4489 check_cflags -Wdisabled-optimization
4490 check_cflags -Wpointer-arith
4491 check_cflags -Wredundant-decls
4492 check_cflags -Wcast-qual
4493 check_cflags -Wwrite-strings
4494 check_cflags -Wtype-limits
4495 check_cflags -Wundef
4496 check_cflags -Wmissing-prototypes
4497 check_cflags -Wstrict-prototypes
4498 enabled extra_warnings && check_cflags -Winline
4499
4500 check_disable_warning(){
4501     warning_flag=-W${1#-Wno-}
4502     test_cflags $warning_flag && add_cflags $1
4503 }
4504
4505 check_disable_warning -Wno-parentheses
4506 check_disable_warning -Wno-switch
4507 check_disable_warning -Wno-format-zero-length
4508 check_disable_warning -Wno-pointer-sign
4509
4510 # add some linker flags
4511 check_ldflags -Wl,--warn-common
4512 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4513 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
4514 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4515
4516 # add some strip flags
4517 # -wN '..@*' is more selective than -x, but not available everywhere.
4518 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4519
4520 enabled neon_clobber_test &&
4521     check_ldflags -Wl,--wrap,avcodec_open2              \
4522                   -Wl,--wrap,avcodec_decode_audio4      \
4523                   -Wl,--wrap,avcodec_decode_video2      \
4524                   -Wl,--wrap,avcodec_decode_subtitle2   \
4525                   -Wl,--wrap,avcodec_encode_audio2      \
4526                   -Wl,--wrap,avcodec_encode_video2      \
4527                   -Wl,--wrap,avcodec_encode_subtitle    \
4528                   -Wl,--wrap,avresample_convert ||
4529     disable neon_clobber_test
4530
4531 enabled xmm_clobber_test &&
4532     check_ldflags -Wl,--wrap,avcodec_open2              \
4533                   -Wl,--wrap,avcodec_decode_audio4      \
4534                   -Wl,--wrap,avcodec_decode_video2      \
4535                   -Wl,--wrap,avcodec_decode_subtitle2   \
4536                   -Wl,--wrap,avcodec_encode_audio2      \
4537                   -Wl,--wrap,avcodec_encode_video2      \
4538                   -Wl,--wrap,avcodec_encode_subtitle    \
4539                   -Wl,--wrap,avresample_convert         \
4540                   -Wl,--wrap,sws_scale ||
4541     disable xmm_clobber_test
4542
4543 echo "X{};" > $TMPV
4544 if test_ldflags -Wl,--version-script,$TMPV; then
4545     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4546     check_cc <<EOF && enable symver_asm_label
4547 void ff_foo(void) __asm__ ("av_foo@VERSION");
4548 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4549 EOF
4550     check_cc <<EOF && enable symver_gnu_asm
4551 __asm__(".symver ff_foo,av_foo@VERSION");
4552 void ff_foo(void) {}
4553 EOF
4554 fi
4555
4556 if [ -z "$optflags" ]; then
4557     if enabled small; then
4558         optflags=$cflags_size
4559     elif enabled optimizations; then
4560         optflags=$cflags_speed
4561     else
4562         optflags=$cflags_noopt
4563     fi
4564 fi
4565
4566 check_optflags(){
4567     check_cflags "$@"
4568     enabled lto && check_ldflags "$@"
4569 }
4570
4571
4572 if enabled lto; then
4573     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4574     check_cflags  -flto
4575     check_ldflags -flto $cpuflags
4576 fi
4577
4578 check_optflags $optflags
4579 check_optflags -fno-math-errno
4580 check_optflags -fno-signed-zeros
4581
4582 if enabled icc; then
4583     # Just warnings, no remarks
4584     check_cflags -w1
4585     # -wd: Disable following warnings
4586     # 144, 167, 556: -Wno-pointer-sign
4587     # 1292: attribute "foo" ignored
4588     # 1419: external declaration in primary source file
4589     # 10006: ignoring unknown option -fno-signed-zeros
4590     # 10148: ignoring unknown option -Wno-parentheses
4591     # 10156: ignoring option '-W'; no argument required
4592     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4593     # 11030: Warning unknown option --as-needed
4594     # 10156: ignoring option '-export'; no argument required
4595     check_ldflags -wd10156,11030
4596     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4597     enable ebp_available
4598     if enabled x86_32; then
4599         icc_version=$($cc -dumpversion)
4600         test ${icc_version%%.*} -ge 11 &&
4601             check_cflags -falign-stack=maintain-16-byte ||
4602             disable aligned_stack
4603     fi
4604 elif enabled ccc; then
4605     # disable some annoying warnings
4606     add_cflags -msg_disable bitnotint
4607     add_cflags -msg_disable mixfuncvoid
4608     add_cflags -msg_disable nonstandcast
4609     add_cflags -msg_disable unsupieee
4610 elif enabled gcc; then
4611     check_optflags -fno-tree-vectorize
4612     check_cflags -Werror=implicit-function-declaration
4613     check_cflags -Werror=missing-prototypes
4614     check_cflags -Werror=return-type
4615     check_cflags -Werror=declaration-after-statement
4616     check_cflags -Werror=vla
4617     check_cflags -Werror=format-security
4618     check_cflags -fdiagnostics-color=auto
4619     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4620 elif enabled llvm_gcc; then
4621     check_cflags -mllvm -stack-alignment=16
4622 elif enabled clang; then
4623     check_cflags -mllvm -stack-alignment=16
4624     check_cflags -Qunused-arguments
4625     check_cflags -Werror=implicit-function-declaration
4626     check_cflags -Werror=missing-prototypes
4627     check_cflags -Werror=return-type
4628 elif enabled cparser; then
4629     add_cflags -Wno-missing-variable-declarations
4630     add_cflags -Wno-empty-statement
4631 elif enabled armcc; then
4632     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
4633     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
4634     # 2523: use of inline assembly is deprecated
4635     add_cflags -W${armcc_opt},--diag_suppress=2523
4636     add_cflags -W${armcc_opt},--diag_suppress=1207
4637     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4638     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4639     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4640     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4641 elif enabled tms470; then
4642     add_cflags -pds=824 -pds=837
4643     disable inline_asm
4644 elif enabled pathscale; then
4645     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4646 elif enabled_any msvc icl; then
4647     enabled x86_32 && disable aligned_stack
4648     enabled_all x86_32 debug && add_cflags -Oy-
4649     enabled debug && add_ldflags -debug
4650     enable pragma_deprecated
4651     if enabled icl; then
4652         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4653         # (correctly) on icl 13.x.
4654         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4655             add_cflags -Qansi-alias
4656         # icl will pass the inline asm tests but inline asm is currently
4657         # not supported (build will fail)
4658         disable inline_asm
4659     fi
4660     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
4661     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
4662 fi
4663
4664 case $as_type in
4665     clang)
4666         add_asflags -Qunused-arguments
4667     ;;
4668 esac
4669
4670 case $ld_type in
4671     clang)
4672         check_ldflags -Qunused-arguments
4673     ;;
4674 esac
4675
4676 case $target_os in
4677     osf1)
4678         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4679     ;;
4680     plan9)
4681         add_cppflags -Dmain=plan9_main
4682     ;;
4683 esac
4684
4685 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4686
4687 check_deps $CONFIG_LIST       \
4688            $CONFIG_EXTRA      \
4689            $HAVE_LIST         \
4690            $ALL_COMPONENTS    \
4691
4692 enabled_all dxva2 CoTaskMemFree &&
4693     prepend avconv_libs $($ldflags_filter "-lole32") &&
4694     enable dxva2_lib
4695
4696 ! enabled_any memalign posix_memalign aligned_malloc &&
4697     enabled simd_align_16 && enable memalign_hack
4698
4699 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
4700
4701 for thread in $THREADS_LIST; do
4702     if enabled $thread; then
4703         test -n "$thread_type" &&
4704             die "ERROR: Only one thread type must be selected." ||
4705             thread_type="$thread"
4706     fi
4707 done
4708
4709 enabled zlib && add_cppflags -DZLIB_CONST
4710
4711 # conditional library dependencies, in linking order
4712 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
4713 enabled resample_filter && prepend avfilter_deps "avresample"
4714 enabled scale_filter    && prepend avfilter_deps "swscale"
4715
4716 enabled opus_decoder    && prepend avcodec_deps "avresample"
4717
4718 expand_deps(){
4719     lib_deps=${1}_deps
4720     eval "deps=\$$lib_deps"
4721     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
4722     unique $lib_deps
4723 }
4724
4725 map 'expand_deps $v' $LIBRARY_LIST
4726
4727 echo "install prefix            $prefix"
4728 echo "source path               $source_path"
4729 echo "C compiler                $cc"
4730 echo "C library                 $libc_type"
4731 if test "$host_cc" != "$cc"; then
4732     echo "host C compiler           $host_cc"
4733     echo "host C library            $host_libc_type"
4734 fi
4735 echo "ARCH                      $arch ($cpu)"
4736 if test "$build_suffix" != ""; then
4737     echo "build suffix              $build_suffix"
4738 fi
4739 if test "$extra_version" != ""; then
4740     echo "version string suffix     $extra_version"
4741 fi
4742 echo "big-endian                ${bigendian-no}"
4743 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4744 if enabled x86; then
4745     echo "${yasmexe}                      ${yasm-no}"
4746     echo "MMX enabled               ${mmx-no}"
4747     echo "MMXEXT enabled            ${mmxext-no}"
4748     echo "3DNow! enabled            ${amd3dnow-no}"
4749     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4750     echo "SSE enabled               ${sse-no}"
4751     echo "SSSE3 enabled             ${ssse3-no}"
4752     echo "AVX enabled               ${avx-no}"
4753     echo "XOP enabled               ${xop-no}"
4754     echo "FMA3 enabled              ${fma3-no}"
4755     echo "FMA4 enabled              ${fma4-no}"
4756     echo "i686 features enabled     ${i686-no}"
4757     echo "CMOV is fast              ${fast_cmov-no}"
4758     echo "EBX available             ${ebx_available-no}"
4759     echo "EBP available             ${ebp_available-no}"
4760 fi
4761 if enabled aarch64; then
4762     echo "NEON enabled              ${neon-no}"
4763     echo "VFP enabled               ${vfp-no}"
4764 fi
4765 if enabled arm; then
4766     echo "ARMv5TE enabled           ${armv5te-no}"
4767     echo "ARMv6 enabled             ${armv6-no}"
4768     echo "ARMv6T2 enabled           ${armv6t2-no}"
4769     echo "VFP enabled               ${vfp-no}"
4770     echo "NEON enabled              ${neon-no}"
4771 fi
4772 if enabled ppc; then
4773     echo "AltiVec enabled           ${altivec-no}"
4774     echo "VSX enabled               ${vsx-no}"
4775     echo "POWER8 enabled            ${power8-no}"
4776     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4777     echo "dcbzl available           ${dcbzl-no}"
4778 fi
4779 echo "debug symbols             ${debug-no}"
4780 echo "optimize for size         ${small-no}"
4781 echo "optimizations             ${optimizations-no}"
4782 echo "static                    ${static-no}"
4783 echo "shared                    ${shared-no}"
4784 echo "new filter support        ${avfilter-no}"
4785 echo "network support           ${network-no}"
4786 echo "threading support         ${thread_type-no}"
4787 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4788 echo "SDL support               ${sdl-no}"
4789 test -n "$random_seed" &&
4790     echo "random seed               ${random_seed}"
4791 echo
4792
4793 echo "External libraries:"