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