lavc: add Intel libmfx-based HEVC encoder
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89   --enable-rpath           use rpath when linking programs [USE WITH CARE]
90
91 Licensing options:
92   --enable-gpl             allow use of GPL code, the resulting libs
93                            and binaries will be under GPL [no]
94   --enable-version3        upgrade (L)GPL to version 3 [no]
95   --enable-nonfree         allow use of nonfree code, the resulting libs
96                            and binaries will be unredistributable [no]
97
98 Configuration options:
99   --disable-static         do not build static libraries [no]
100   --enable-shared          build shared libraries [no]
101   --enable-small           optimize for size instead of speed
102   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
103   --enable-gray            enable full grayscale support (slower color)
104   --disable-swscale-alpha  disable alpha channel support in swscale
105   --disable-all            disable building components, libraries and programs
106
107 Program options:
108   --disable-programs       do not build command line programs
109   --disable-avconv         disable avconv build
110   --disable-avplay         disable avplay build
111   --disable-avprobe        disable avprobe build
112   --disable-avserver       deprecated, does nothing
113
114 Component options:
115   --disable-doc            do not build documentation
116   --disable-avdevice       disable libavdevice build
117   --disable-avcodec        disable libavcodec build
118   --disable-avformat       disable libavformat build
119   --disable-avutil         disable libavutil build
120   --disable-swscale        disable libswscale build
121   --disable-avfilter       disable video filter support [no]
122   --disable-avresample     disable libavresample build [no]
123   --disable-pthreads       disable pthreads [auto]
124   --disable-w32threads     disable Win32 threads [auto]
125   --disable-network        disable network support [no]
126   --disable-dct            disable DCT code
127   --disable-error-resilience disable error resilience code
128   --disable-lsp            disable LSP code
129   --disable-lzo            disable LZO decoder code
130   --disable-mdct           disable MDCT code
131   --disable-rdft           disable RDFT code
132   --disable-fft            disable FFT code
133   --disable-faan           disable floating point AAN (I)DCT code
134
135 Hardware accelerators:
136   --enable-d3d11va         enable D3D11VA code
137   --enable-dxva2           enable DXVA2 code
138   --enable-vaapi           enable VAAPI code
139   --enable-vda             enable VDA code
140   --enable-vdpau           enable VDPAU code
141
142 Individual component options:
143   --disable-everything     disable all components listed below
144   --disable-encoder=NAME   disable encoder NAME
145   --enable-encoder=NAME    enable encoder NAME
146   --disable-encoders       disable all encoders
147   --disable-decoder=NAME   disable decoder NAME
148   --enable-decoder=NAME    enable decoder NAME
149   --disable-decoders       disable all decoders
150   --disable-hwaccel=NAME   disable hwaccel NAME
151   --enable-hwaccel=NAME    enable hwaccel NAME
152   --disable-hwaccels       disable all hwaccels
153   --disable-muxer=NAME     disable muxer NAME
154   --enable-muxer=NAME      enable muxer NAME
155   --disable-muxers         disable all muxers
156   --disable-demuxer=NAME   disable demuxer NAME
157   --enable-demuxer=NAME    enable demuxer NAME
158   --disable-demuxers       disable all demuxers
159   --enable-parser=NAME     enable parser NAME
160   --disable-parser=NAME    disable parser NAME
161   --disable-parsers        disable all parsers
162   --enable-bsf=NAME        enable bitstream filter NAME
163   --disable-bsf=NAME       disable bitstream filter NAME
164   --disable-bsfs           disable all bitstream filters
165   --enable-protocol=NAME   enable protocol NAME
166   --disable-protocol=NAME  disable protocol NAME
167   --disable-protocols      disable all protocols
168   --enable-indev=NAME      enable input device NAME
169   --disable-indev=NAME     disable input device NAME
170   --disable-indevs         disable input devices
171   --enable-outdev=NAME     enable output device NAME
172   --disable-outdev=NAME    disable output device NAME
173   --disable-outdevs        disable output devices
174   --disable-devices        disable all devices
175   --enable-filter=NAME     enable filter NAME
176   --disable-filter=NAME    disable filter NAME
177   --disable-filters        disable all filters
178
179 External library support:
180   --enable-avisynth        enable reading of AviSynth script files [no]
181   --enable-bzlib           enable bzlib [autodetect]
182   --enable-frei0r          enable frei0r video filtering
183   --enable-gnutls          enable gnutls [no]
184   --enable-libbs2b         enable bs2b DSP library [no]
185   --enable-libcdio         enable audio CD grabbing with libcdio
186   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
187                            and libraw1394 [no]
188   --enable-libdcadec       enable DCA decoding via libdcadec [no]
189   --enable-libfaac         enable AAC encoding via libfaac [no]
190   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
191   --enable-libfreetype     enable libfreetype [no]
192   --enable-libgsm          enable GSM de/encoding via libgsm [no]
193   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
194   --enable-libmfx          enable HW acceleration through libmfx
195   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
196   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
197   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
198   --enable-libopencv       enable video filtering via libopencv [no]
199   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
200   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
201   --enable-libopus         enable Opus de/encoding via libopus [no]
202   --enable-libpulse        enable Pulseaudio input via libpulse [no]
203   --enable-librtmp         enable RTMP[E] support via librtmp [no]
204   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
205   --enable-libsnappy       enable Snappy compression [no]
206   --enable-libspeex        enable Speex de/encoding via libspeex [no]
207   --enable-libtheora       enable Theora encoding via libtheora [no]
208   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
209   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
210   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
211   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
212   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
213   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
214   --enable-libwebp         enable WebP encoding via libwebp [no]
215   --enable-libx264         enable H.264 encoding via x264 [no]
216   --enable-libx265         enable HEVC encoding via x265 [no]
217   --enable-libxavs         enable AVS encoding via xavs [no]
218   --enable-libxcb          enable X11 grabbing using XCB [no]
219   --enable-libxcb-shm      enable X11 grabbing shm communication [auto]
220   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [auto]
221   --enable-libxvid         enable Xvid encoding via xvidcore,
222                            native MPEG-4/Xvid encoder exists [no]
223   --enable-mmal            enable decoding via MMAL [no]
224   --enable-nvenc           enable encoding via NVENC [no]
225   --enable-openssl         enable openssl [no]
226   --enable-x11grab         enable X11 grabbing (legacy) [no]
227   --enable-zlib            enable zlib [autodetect]
228
229 Toolchain options:
230   --arch=ARCH              select architecture [$arch]
231   --cpu=CPU                select the minimum required CPU (affects
232                            instruction selection, may crash on older CPUs)
233   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
234   --enable-cross-compile   assume a cross-compiler is used
235   --sysroot=PATH           root of cross-build tree
236   --sysinclude=PATH        location of cross-build system headers
237   --target-os=OS           compiler targets OS [$target_os]
238   --target-exec=CMD        command to run executables on target
239   --target-path=DIR        path to view of build directory on target
240   --target-samples=DIR     path to samples directory on target
241   --toolchain=NAME         set tool defaults according to NAME
242   --nm=NM                  use nm tool
243   --ar=AR                  use archive tool AR [$ar_default]
244   --as=AS                  use assembler AS [$as_default]
245   --cc=CC                  use C compiler CC [$cc_default]
246   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
247   --ld=LD                  use linker LD
248   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
249   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
250   --host-cc=HOSTCC         use host C compiler HOSTCC
251   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
252   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
253   --host-ld=HOSTLD         use host linker HOSTLD
254   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
255   --host-libs=HLIBS        use libs HLIBS when linking for host
256   --host-os=OS             compiler host OS [$target_os]
257   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
258   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
259   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
260   --extra-libs=ELIBS       add ELIBS [$ELIBS]
261   --extra-version=STRING   version string suffix []
262   --optflags=OPTFLAGS      override optimization-related compiler flags
263   --build-suffix=SUFFIX    library name suffix []
264   --enable-pic             build position-independent code
265   --enable-thumb           compile for Thumb instruction set
266   --enable-lto             use link-time optimization
267   --env="ENV=override"     override the environment variables
268
269 Advanced options (experts only):
270   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
271   --disable-symver         disable symbol versioning
272   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
273   --disable-safe-bitstream-reader
274                            disable buffer boundary checking in bitreaders
275                            (faster, but may crash)
276   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
277   --enable-sram            allow use of on-chip SRAM
278
279 Optimization options (experts only):
280   --disable-asm            disable all assembly optimizations
281   --disable-altivec        disable AltiVec optimizations
282   --disable-vsx            disable VSX optimizations
283   --disable-power8         disable POWER8 optimizations
284   --disable-amd3dnow       disable 3DNow! optimizations
285   --disable-amd3dnowext    disable 3DNow! extended optimizations
286   --disable-mmx            disable MMX optimizations
287   --disable-mmxext         disable MMXEXT optimizations
288   --disable-sse            disable SSE optimizations
289   --disable-sse2           disable SSE2 optimizations
290   --disable-sse3           disable SSE3 optimizations
291   --disable-ssse3          disable SSSE3 optimizations
292   --disable-sse4           disable SSE4 optimizations
293   --disable-sse42          disable SSE4.2 optimizations
294   --disable-avx            disable AVX optimizations
295   --disable-xop            disable XOP optimizations
296   --disable-fma3           disable FMA3 optimizations
297   --disable-fma4           disable FMA4 optimizations
298   --disable-avx2           disable AVX2 optimizations
299   --disable-armv5te        disable armv5te optimizations
300   --disable-armv6          disable armv6 optimizations
301   --disable-armv6t2        disable armv6t2 optimizations
302   --disable-vfp            disable VFP optimizations
303   --disable-neon           disable NEON optimizations
304   --disable-inline-asm     disable use of inline assembly
305   --disable-yasm           disable use of nasm/yasm assembly
306
307 Developer options (useful when working on Libav itself):
308   --disable-debug          disable debugging symbols
309   --enable-debug=LEVEL     set the debug level [$debuglevel]
310   --disable-optimizations  disable compiler optimizations
311   --enable-extra-warnings  enable more compiler warnings
312   --samples=PATH           location of test samples for FATE, if not set use
313                            \$LIBAV_SAMPLES at make invocation time.
314   --enable-neon-clobber-test check NEON registers for clobbering (should be
315                            used only for debugging purposes)
316   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
317                            should be used only for debugging purposes)
318   --enable-random          randomly enable/disable components
319   --disable-random
320   --enable-random=LIST     randomly enable/disable specific components or
321   --disable-random=LIST    component groups. LIST is a comma-separated list
322                            of NAME[:PROB] entries where NAME is a component
323                            (group) and PROB the probability associated with
324                            NAME (default 0.5).
325   --random-seed=VALUE      seed value for --enable/disable-random
326   --disable-valgrind-backtrace do not print a backtrace under Valgrind
327                            (only applies to --disable-optimizations builds)
328
329 NOTE: Object files are built at the place where configure is launched.
330 EOF
331   exit 0
332 }
333
334 quotes='""'
335
336 log(){
337     echo "$@" >> $logfile
338 }
339
340 log_file(){
341     log BEGIN $1
342     pr -n -t $1 >> $logfile
343     log END $1
344 }
345
346 echolog(){
347     log "$@"
348     echo "$@"
349 }
350
351 warn(){
352     log "WARNING: $*"
353     WARNINGS="${WARNINGS}WARNING: $*\n"
354 }
355
356 die(){
357     echolog "$@"
358     cat <<EOF
359
360 If you think configure made a mistake, make sure you are using the latest
361 version from Git.  If the latest version fails, report the problem to the
362 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
363 EOF
364     if disabled logging; then
365         cat <<EOF
366 Rerun configure with logging enabled (do not use --disable-logging), and
367 include the log this produces with your report.
368 EOF
369     else
370         cat <<EOF
371 Include the log file "$logfile" produced by configure as this will help
372 solving the problem.
373 EOF
374     fi
375     exit 1
376 }
377
378 # Avoid locale weirdness, besides we really just want to translate ASCII.
379 toupper(){
380     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
381 }
382
383 tolower(){
384     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
385 }
386
387 c_escape(){
388     echo "$*" | sed 's/["\\]/\\\0/g'
389 }
390
391 sh_quote(){
392     v=$(echo "$1" | sed "s/'/'\\\\''/g")
393     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
394     echo "$v"
395 }
396
397 cleanws(){
398     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
399 }
400
401 filter(){
402     pat=$1
403     shift
404     for v; do
405         eval "case $v in $pat) echo $v ;; esac"
406     done
407 }
408
409 filter_out(){
410     pat=$1
411     shift
412     for v; do
413         eval "case $v in $pat) ;; *) echo $v ;; esac"
414     done
415 }
416
417 map(){
418     m=$1
419     shift
420     for v; do eval $m; done
421 }
422
423 add_suffix(){
424     suffix=$1
425     shift
426     for v; do echo ${v}${suffix}; done
427 }
428
429 set_all(){
430     value=$1
431     shift
432     for var in $*; do
433         eval $var=$value
434     done
435 }
436
437 set_weak(){
438     value=$1
439     shift
440     for var; do
441         eval : \${$var:=$value}
442     done
443 }
444
445 sanitize_var_name(){
446     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
447 }
448
449 set_safe(){
450     var=$1
451     shift
452     eval $(sanitize_var_name "$var")='$*'
453 }
454
455 get_safe(){
456     eval echo \$$(sanitize_var_name "$1")
457 }
458
459 pushvar(){
460     for pvar in $*; do
461         eval level=\${${pvar}_level:=0}
462         eval ${pvar}_${level}="\$$pvar"
463         eval ${pvar}_level=$(($level+1))
464     done
465 }
466
467 popvar(){
468     for pvar in $*; do
469         eval level=\${${pvar}_level:-0}
470         test $level = 0 && continue
471         eval level=$(($level-1))
472         eval $pvar="\${${pvar}_${level}}"
473         eval ${pvar}_level=$level
474         eval unset ${pvar}_${level}
475     done
476 }
477
478 enable(){
479     set_all yes $*
480 }
481
482 disable(){
483     set_all no $*
484 }
485
486 enable_weak(){
487     set_weak yes $*
488 }
489
490 disable_weak(){
491     set_weak no $*
492 }
493
494 enable_safe(){
495     for var; do
496         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
497     done
498 }
499
500 disable_safe(){
501     for var; do
502         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
503     done
504 }
505
506 do_enable_deep(){
507     for var; do
508         enabled $var && continue
509         eval sel="\$${var}_select"
510         eval sgs="\$${var}_suggest"
511         pushvar var sgs
512         enable_deep $sel
513         popvar sgs
514         enable_deep_weak $sgs
515         popvar var
516     done
517 }
518
519 enable_deep(){
520     do_enable_deep $*
521     enable $*
522 }
523
524 enable_deep_weak(){
525     for var; do
526         disabled $var && continue
527         pushvar var
528         do_enable_deep $var
529         popvar var
530         enable_weak $var
531     done
532 }
533
534 enabled(){
535     test "${1#!}" = "$1" && op== || op=!=
536     eval test "x\$${1#!}" $op "xyes"
537 }
538
539 disabled(){
540     test "${1#!}" = "$1" && op== || op=!=
541     eval test "x\$${1#!}" $op "xno"
542 }
543
544 enabled_all(){
545     for opt; do
546         enabled $opt || return 1
547     done
548 }
549
550 disabled_all(){
551     for opt; do
552         disabled $opt || return 1
553     done
554 }
555
556 enabled_any(){
557     for opt; do
558         enabled $opt && return 0
559     done
560 }
561
562 disabled_any(){
563     for opt; do
564         disabled $opt && return 0
565     done
566     return 1
567 }
568
569 set_default(){
570     for opt; do
571         eval : \${$opt:=\$${opt}_default}
572     done
573 }
574
575 is_in(){
576     value=$1
577     shift
578     for var in $*; do
579         [ $var = $value ] && return 0
580     done
581     return 1
582 }
583
584 do_check_deps(){
585     for cfg; do
586         cfg="${cfg#!}"
587         enabled ${cfg}_checking && die "Circular dependency for $cfg."
588         disabled ${cfg}_checking && continue
589         enable ${cfg}_checking
590         append allopts $cfg
591
592         eval dep_all="\$${cfg}_deps"
593         eval dep_any="\$${cfg}_deps_any"
594         eval dep_sel="\$${cfg}_select"
595         eval dep_sgs="\$${cfg}_suggest"
596         eval dep_ifa="\$${cfg}_if"
597         eval dep_ifn="\$${cfg}_if_any"
598
599         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
600         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
601         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
602
603         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
604         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
605         enabled_all  $dep_all || disable $cfg
606         enabled_any  $dep_any || disable $cfg
607         disabled_any $dep_sel && disable $cfg
608
609         if enabled $cfg; then
610             enable_deep $dep_sel
611             enable_deep_weak $dep_sgs
612         fi
613
614         disable ${cfg}_checking
615     done
616 }
617
618 check_deps(){
619     unset allopts
620
621     do_check_deps "$@"
622
623     for cfg in $allopts; do
624         enabled $cfg || continue
625         eval dep_extralibs="\$${cfg}_extralibs"
626         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
627     done
628 }
629
630 print_config(){
631     pfx=$1
632     files=$2
633     shift 2
634     map 'eval echo "$v \${$v:-no}"' "$@" |
635     awk "BEGIN { split(\"$files\", files) }
636         {
637             c = \"$pfx\" toupper(\$1);
638             v = \$2;
639             sub(/yes/, 1, v);
640             sub(/no/,  0, v);
641             for (f in files) {
642                 file = files[f];
643                 if (file ~ /\\.h\$/) {
644                     printf(\"#define %s %d\\n\", c, v) >>file;
645                 } else if (file ~ /\\.asm\$/) {
646                     printf(\"%%define %s %d\\n\", c, v) >>file;
647                 } else if (file ~ /\\.mak\$/) {
648                     n = -v ? \"\" : \"!\";
649                     printf(\"%s%s=yes\\n\", n, c) >>file;
650                 }
651             }
652         }"
653 }
654
655 print_enabled(){
656     suf=$1
657     shift
658     for v; do
659         enabled $v && printf "%s\n" ${v%$suf};
660     done
661 }
662
663 append(){
664     var=$1
665     shift
666     eval "$var=\"\$$var $*\""
667 }
668
669 prepend(){
670     var=$1
671     shift
672     eval "$var=\"$* \$$var\""
673 }
674
675 unique(){
676     var=$1
677     uniq_list=""
678     for tok in $(eval echo \$$var); do
679         uniq_list="$(filter_out $tok $uniq_list) $tok"
680     done
681     eval "$var=\"${uniq_list}\""
682 }
683
684 add_cppflags(){
685     append CPPFLAGS "$@"
686 }
687
688 add_cflags(){
689     append CFLAGS $($cflags_filter "$@")
690 }
691
692 add_asflags(){
693     append ASFLAGS $($asflags_filter "$@")
694 }
695
696 add_ldflags(){
697     append LDFLAGS $($ldflags_filter "$@")
698 }
699
700 add_ldexeflags(){
701     append LDEXEFLAGS $($ldflags_filter "$@")
702 }
703
704 add_stripflags(){
705     append STRIPFLAGS "$@"
706 }
707
708 add_extralibs(){
709     prepend extralibs $($ldflags_filter "$@")
710 }
711
712 add_host_cppflags(){
713     append host_cppflags "$@"
714 }
715
716 add_host_cflags(){
717     append host_cflags $($host_cflags_filter "$@")
718 }
719
720 add_host_ldflags(){
721     append host_ldflags $($host_ldflags_filter "$@")
722 }
723
724 add_compat(){
725     append compat_objs $1
726     shift
727     map 'add_cppflags -D$v' "$@"
728 }
729
730 check_cmd(){
731     log "$@"
732     "$@" >> $logfile 2>&1
733 }
734
735 cc_o(){
736     eval printf '%s\\n' $CC_O
737 }
738
739 cc_e(){
740     eval printf '%s\\n' $CC_E
741 }
742
743 check_cc(){
744     log check_cc "$@"
745     cat > $TMPC
746     log_file $TMPC
747     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
748 }
749
750 check_cpp(){
751     log check_cpp "$@"
752     cat > $TMPC
753     log_file $TMPC
754     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
755 }
756
757 as_o(){
758     eval printf '%s\\n' $AS_O
759 }
760
761 check_as(){
762     log check_as "$@"
763     cat > $TMPS
764     log_file $TMPS
765     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
766 }
767
768 check_inline_asm(){
769     log check_inline_asm "$@"
770     name="$1"
771     code="$2"
772     shift 2
773     disable $name
774     check_cc "$@" <<EOF && enable $name
775 void foo(void){ __asm__ volatile($code); }
776 EOF
777 }
778
779 check_insn(){
780     log check_insn "$@"
781     check_inline_asm ${1}_inline "\"$2\""
782     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
783 }
784
785 check_yasm(){
786     log check_yasm "$@"
787     echo "$1" > $TMPS
788     log_file $TMPS
789     shift 1
790     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
791 }
792
793 ld_o(){
794     eval printf '%s\\n' $LD_O
795 }
796
797 check_ld(){
798     log check_ld "$@"
799     flags=$(filter_out '-l*' "$@")
800     libs=$(filter '-l*' "$@")
801     check_cc $($cflags_filter $flags) || return
802     flags=$($ldflags_filter $flags)
803     libs=$($ldflags_filter $libs)
804     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
805 }
806
807 print_include(){
808     hdr=$1
809     test "${hdr%.h}" = "${hdr}" &&
810         echo "#include $hdr"    ||
811         echo "#include <$hdr>"
812 }
813
814 check_code(){
815     log check_code "$@"
816     check=$1
817     headers=$2
818     code=$3
819     shift 3
820     {
821         for hdr in $headers; do
822             print_include $hdr
823         done
824         echo "int main(void) { $code; return 0; }"
825     } | check_$check "$@"
826 }
827
828 check_cppflags(){
829     log check_cppflags "$@"
830     check_cc "$@" <<EOF && append CPPFLAGS "$@"
831 int x;
832 EOF
833 }
834
835 test_cflags(){
836     log test_cflags "$@"
837     set -- $($cflags_filter "$@")
838     check_cc "$@" <<EOF
839 int x;
840 EOF
841 }
842
843 check_cflags(){
844     log check_cflags "$@"
845     test_cflags "$@" && add_cflags "$@"
846 }
847
848 test_ldflags(){
849     log test_ldflags "$@"
850     check_ld "$@" <<EOF
851 int main(void){ return 0; }
852 EOF
853 }
854
855 check_ldflags(){
856     log check_ldflags "$@"
857     test_ldflags "$@" && add_ldflags "$@"
858 }
859
860 test_stripflags(){
861     log test_stripflags "$@"
862     # call check_cc to get a fresh TMPO
863     check_cc <<EOF
864 int main(void) { return 0; }
865 EOF
866     check_cmd $strip $STRIPFLAGS "$@" $TMPO
867 }
868
869 check_stripflags(){
870     log check_stripflags "$@"
871     test_stripflags "$@" && add_stripflags "$@"
872 }
873
874 check_header(){
875     log check_header "$@"
876     header=$1
877     shift
878     disable_safe $header
879     check_cpp "$@" <<EOF && enable_safe $header
880 #include <$header>
881 int x;
882 EOF
883 }
884
885 check_func(){
886     log check_func "$@"
887     func=$1
888     shift
889     disable $func
890     check_ld "$@" <<EOF && enable $func
891 extern int $func();
892 int main(void){ $func(); }
893 EOF
894 }
895
896 check_mathfunc(){
897     log check_mathfunc "$@"
898     func=$1
899     narg=$2
900     shift 2
901     test $narg = 2 && args="f, g" || args="f"
902     disable $func
903     check_ld "$@" <<EOF && enable $func
904 #include <math.h>
905 float foo(float f, float g) { return $func($args); }
906 int main(void){ return 0; }
907 EOF
908 }
909
910 check_func_headers(){
911     log check_func_headers "$@"
912     headers=$1
913     funcs=$2
914     shift 2
915     {
916         for hdr in $headers; do
917             print_include $hdr
918         done
919         for func in $funcs; do
920             echo "long check_$func(void) { return (long) $func; }"
921         done
922         echo "int main(void) { return 0; }"
923     } | check_ld "$@" && enable $funcs && enable_safe $headers
924 }
925
926 check_cpp_condition(){
927     log check_cpp_condition "$@"
928     header=$1
929     condition=$2
930     shift 2
931     check_cpp "$@" <<EOF
932 #include <$header>
933 #if !($condition)
934 #error "unsatisfied condition: $condition"
935 #endif
936 EOF
937 }
938
939 check_lib(){
940     log check_lib "$@"
941     header="$1"
942     func="$2"
943     shift 2
944     check_header $header && check_func $func "$@" && add_extralibs "$@"
945 }
946
947 check_lib2(){
948     log check_lib2 "$@"
949     headers="$1"
950     funcs="$2"
951     shift 2
952     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
953 }
954
955 check_pkg_config(){
956     log check_pkg_config "$@"
957     pkg="$1"
958     headers="$2"
959     funcs="$3"
960     shift 3
961     check_cmd $pkg_config --exists --print-errors $pkg || return
962     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
963     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
964     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
965         set_safe "${pkg}_cflags" $pkg_cflags   &&
966         set_safe "${pkg}_libs"   $pkg_libs
967 }
968
969 check_exec(){
970     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
971 }
972
973 check_exec_crash(){
974     code=$(cat)
975
976     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
977     # are safe but may not be available everywhere.  Thus we use
978     # raise(SIGTERM) instead.  The check is run in a subshell so we
979     # can redirect the "Terminated" message from the shell.  SIGBUS
980     # is not defined by standard C so it is used conditionally.
981
982     (check_exec "$@") >> $logfile 2>&1 <<EOF
983 #include <signal.h>
984 static void sighandler(int sig){
985     raise(SIGTERM);
986 }
987 int foo(void){
988     $code
989 }
990 int (*func_ptr)(void) = foo;
991 int main(void){
992     signal(SIGILL, sighandler);
993     signal(SIGFPE, sighandler);
994     signal(SIGSEGV, sighandler);
995 #ifdef SIGBUS
996     signal(SIGBUS, sighandler);
997 #endif
998     return func_ptr();
999 }
1000 EOF
1001 }
1002
1003 check_type(){
1004     log check_type "$@"
1005     headers=$1
1006     type=$2
1007     shift 2
1008     disable_safe "$type"
1009     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1010 }
1011
1012 check_struct(){
1013     log check_struct "$@"
1014     headers=$1
1015     struct=$2
1016     member=$3
1017     shift 3
1018     disable_safe "${struct}_${member}"
1019     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1020         enable_safe "${struct}_${member}"
1021 }
1022
1023 check_builtin(){
1024     log check_builtin "$@"
1025     name=$1
1026     headers=$2
1027     builtin=$3
1028     shift 3
1029     disable "$name"
1030     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1031 }
1032
1033 check_compile_assert(){
1034     log check_compile_assert "$@"
1035     name=$1
1036     headers=$2
1037     condition=$3
1038     shift 3
1039     disable "$name"
1040     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1041 }
1042
1043 require(){
1044     name="$1"
1045     header="$2"
1046     func="$3"
1047     shift 3
1048     check_lib $header $func "$@" || die "ERROR: $name not found"
1049 }
1050
1051 require2(){
1052     name="$1"
1053     headers="$2"
1054     func="$3"
1055     shift 3
1056     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1057 }
1058
1059 require_pkg_config(){
1060     pkg="$1"
1061     check_pkg_config "$@" || die "ERROR: $pkg not found"
1062     add_cflags    $(get_safe "${pkg}_cflags")
1063     add_extralibs $(get_safe "${pkg}_libs")
1064 }
1065
1066 hostcc_e(){
1067     eval printf '%s\\n' $HOSTCC_E
1068 }
1069
1070 hostcc_o(){
1071     eval printf '%s\\n' $HOSTCC_O
1072 }
1073
1074 check_host_cc(){
1075     log check_host_cc "$@"
1076     cat > $TMPC
1077     log_file $TMPC
1078     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1079 }
1080
1081 check_host_cpp(){
1082     log check_host_cpp "$@"
1083     cat > $TMPC
1084     log_file $TMPC
1085     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1086 }
1087
1088 check_host_cppflags(){
1089     log check_host_cppflags "$@"
1090     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1091 int x;
1092 EOF
1093 }
1094
1095 check_host_cflags(){
1096     log check_host_cflags "$@"
1097     set -- $($host_cflags_filter "$@")
1098     check_host_cc "$@" <<EOF && append host_cflags "$@"
1099 int x;
1100 EOF
1101 }
1102
1103 check_host_cpp_condition(){
1104     log check_host_cpp_condition "$@"
1105     header=$1
1106     condition=$2
1107     shift 2
1108     check_host_cpp "$@" <<EOF
1109 #include <$header>
1110 #if !($condition)
1111 #error "unsatisfied condition: $condition"
1112 #endif
1113 EOF
1114 }
1115
1116 apply(){
1117     file=$1
1118     shift
1119     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1120 }
1121
1122 cp_if_changed(){
1123     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1124     mkdir -p "$(dirname $2)"
1125     $cp_f "$1" "$2"
1126 }
1127
1128 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1129 # system-dependent things.
1130
1131 COMPONENT_LIST="
1132     bsfs
1133     decoders
1134     demuxers
1135     encoders
1136     filters
1137     hwaccels
1138     indevs
1139     muxers
1140     outdevs
1141     parsers
1142     protocols
1143 "
1144
1145 EXAMPLE_LIST="
1146     avcodec_example
1147     filter_audio_example
1148     metadata_example
1149     output_example
1150     qsvdec_example
1151     transcode_aac_example
1152 "
1153
1154 EXTERNAL_LIBRARY_LIST="
1155     avisynth
1156     bzlib
1157     frei0r
1158     gnutls
1159     libbs2b
1160     libcdio
1161     libdc1394
1162     libdcadec
1163     libfaac
1164     libfdk_aac
1165     libfontconfig
1166     libfreetype
1167     libgsm
1168     libilbc
1169     libmfx
1170     libmp3lame
1171     libopencore_amrnb
1172     libopencore_amrwb
1173     libopencv
1174     libopenh264
1175     libopenjpeg
1176     libopus
1177     libpulse
1178     librtmp
1179     libschroedinger
1180     libsnappy
1181     libspeex
1182     libtheora
1183     libtwolame
1184     libvo_aacenc
1185     libvo_amrwbenc
1186     libvorbis
1187     libvpx
1188     libwavpack
1189     libwebp
1190     libx264
1191     libx265
1192     libxavs
1193     libxcb
1194     libxcb_shm
1195     libxcb_xfixes
1196     libxvid
1197     mmal
1198     nvenc
1199     openssl
1200     x11grab
1201     zlib
1202 "
1203
1204 FEATURE_LIST="
1205     gray
1206     hardcoded_tables
1207     runtime_cpudetect
1208     safe_bitstream_reader
1209     shared
1210     small
1211     sram
1212     static
1213     swscale_alpha
1214 "
1215
1216 HWACCEL_LIST="
1217     d3d11va
1218     dxva2
1219     vaapi
1220     vda
1221     vdpau
1222 "
1223
1224 LIBRARY_LIST="
1225     avcodec
1226     avdevice
1227     avfilter
1228     avformat
1229     avresample
1230     avutil
1231     swscale
1232 "
1233
1234 LICENSE_LIST="
1235     gpl
1236     nonfree
1237     version3
1238 "
1239
1240 PROGRAM_LIST="
1241     avconv
1242     avplay
1243     avprobe
1244 "
1245
1246 SUBSYSTEM_LIST="
1247     dct
1248     doc
1249     error_resilience
1250     faan
1251     fft
1252     lsp
1253     lzo
1254     mdct
1255     network
1256     rdft
1257 "
1258
1259 CONFIG_LIST="
1260     $COMPONENT_LIST
1261     $EXAMPLE_LIST
1262     $EXTERNAL_LIBRARY_LIST
1263     $FEATURE_LIST
1264     $HWACCEL_LIST
1265     $LICENSE_LIST
1266     $LIBRARY_LIST
1267     $PROGRAM_LIST
1268     $SUBSYSTEM_LIST
1269     memalign_hack
1270     neon_clobber_test
1271     pic
1272     pod2man
1273     texi2html
1274     thumb
1275     valgrind_backtrace
1276     xmm_clobber_test
1277 "
1278
1279 THREADS_LIST="
1280     pthreads
1281     w32threads
1282 "
1283
1284 ATOMICS_LIST="
1285     atomics_gcc
1286     atomics_suncc
1287     atomics_win32
1288 "
1289
1290 ARCH_LIST="
1291     aarch64
1292     alpha
1293     arm
1294     avr32
1295     avr32_ap
1296     avr32_uc
1297     bfin
1298     ia64
1299     m68k
1300     mips
1301     mips64
1302     parisc
1303     ppc
1304     ppc64
1305     s390
1306     sh4
1307     sparc
1308     sparc64
1309     tilegx
1310     tilepro
1311     tomi
1312     x86
1313     x86_32
1314     x86_64
1315 "
1316
1317 ARCH_EXT_LIST_ARM="
1318     armv5te
1319     armv6
1320     armv6t2
1321     armv8
1322     neon
1323     vfp
1324     vfpv3
1325 "
1326
1327 ARCH_EXT_LIST_X86_SIMD="
1328     amd3dnow
1329     amd3dnowext
1330     avx
1331     avx2
1332     fma3
1333     fma4
1334     mmx
1335     mmxext
1336     sse
1337     sse2
1338     sse3
1339     sse4
1340     sse42
1341     ssse3
1342     xop
1343 "
1344
1345 ARCH_EXT_LIST_PPC="
1346     altivec
1347     dcbzl
1348     ldbrx
1349     power8
1350     ppc4xx
1351     vsx
1352 "
1353
1354 ARCH_EXT_LIST_X86="
1355     $ARCH_EXT_LIST_X86_SIMD
1356     cpunop
1357     i686
1358 "
1359
1360 ARCH_EXT_LIST="
1361     $ARCH_EXT_LIST_ARM
1362     $ARCH_EXT_LIST_PPC
1363     $ARCH_EXT_LIST_X86
1364     loongson
1365     vis
1366 "
1367
1368 ARCH_FEATURES="
1369     aligned_stack
1370     fast_64bit
1371     fast_clz
1372     fast_cmov
1373     local_aligned_8
1374     local_aligned_16
1375     simd_align_16
1376 "
1377
1378 BUILTIN_LIST="
1379     atomic_cas_ptr
1380     machine_rw_barrier
1381     MemoryBarrier
1382     mm_empty
1383     rdtsc
1384     sync_val_compare_and_swap
1385 "
1386 HAVE_LIST_CMDLINE="
1387     inline_asm
1388     symver
1389     yasm
1390 "
1391
1392 HAVE_LIST_PUB="
1393     bigendian
1394     fast_unaligned
1395 "
1396
1397 HEADERS_LIST="
1398     alsa_asoundlib_h
1399     altivec_h
1400     arpa_inet_h
1401     cdio_paranoia_h
1402     cdio_paranoia_paranoia_h
1403     dev_bktr_ioctl_bt848_h
1404     dev_bktr_ioctl_meteor_h
1405     dev_ic_bt8xx_h
1406     dev_video_bktr_ioctl_bt848_h
1407     dev_video_meteor_ioctl_meteor_h
1408     direct_h
1409     dlfcn_h
1410     d3d11_h
1411     dxva_h
1412     gsm_h
1413     io_h
1414     mach_mach_time_h
1415     machine_ioctl_bt848_h
1416     machine_ioctl_meteor_h
1417     malloc_h
1418     poll_h
1419     sndio_h
1420     soundcard_h
1421     sys_mman_h
1422     sys_param_h
1423     sys_resource_h
1424     sys_select_h
1425     sys_soundcard_h
1426     sys_time_h
1427     sys_un_h
1428     sys_videoio_h
1429     unistd_h
1430     valgrind_valgrind_h
1431     windows_h
1432     winsock2_h
1433 "
1434
1435 INTRINSICS_LIST="
1436     intrinsics_neon
1437 "
1438
1439 MATH_FUNCS="
1440     atanf
1441     atan2f
1442     cbrtf
1443     cosf
1444     exp2
1445     exp2f
1446     expf
1447     isinf
1448     isnan
1449     ldexpf
1450     llrint
1451     llrintf
1452     log2
1453     log2f
1454     log10f
1455     lrint
1456     lrintf
1457     powf
1458     rint
1459     round
1460     roundf
1461     sinf
1462     trunc
1463     truncf
1464 "
1465
1466 SYSTEM_FUNCS="
1467     aligned_malloc
1468     clock_gettime
1469     closesocket
1470     CommandLineToArgvW
1471     CoTaskMemFree
1472     CryptGenRandom
1473     dlopen
1474     fcntl
1475     flt_lim
1476     fork
1477     getaddrinfo
1478     gethrtime
1479     getopt
1480     GetProcessAffinityMask
1481     GetProcessMemoryInfo
1482     GetProcessTimes
1483     getrusage
1484     getservbyport
1485     GetSystemTimeAsFileTime
1486     gettimeofday
1487     gmtime_r
1488     inet_aton
1489     isatty
1490     jack_port_get_latency_range
1491     LoadLibrary
1492     localtime_r
1493     mach_absolute_time
1494     MapViewOfFile
1495     memalign
1496     mkstemp
1497     mmap
1498     mprotect
1499     nanosleep
1500     posix_memalign
1501     sched_getaffinity
1502     SetConsoleTextAttribute
1503     setmode
1504     setrlimit
1505     Sleep
1506     strerror_r
1507     sysconf
1508     sysctl
1509     usleep
1510     VirtualAlloc
1511 "
1512
1513 TOOLCHAIN_FEATURES="
1514     as_dn_directive
1515     as_func
1516     as_object_arch
1517     asm_mod_q
1518     attribute_may_alias
1519     attribute_packed
1520     ebp_available
1521     ebx_available
1522     gnu_as
1523     ibm_asm
1524     inline_asm_labels
1525     pragma_deprecated
1526     symver_asm_label
1527     symver_gnu_asm
1528     vfp_args
1529     xform_asm
1530     xmm_clobbers
1531 "
1532
1533 TYPES_LIST="
1534     CONDITION_VARIABLE_Ptr
1535     socklen_t
1536     struct_addrinfo
1537     struct_group_source_req
1538     struct_ip_mreq_source
1539     struct_ipv6_mreq
1540     struct_pollfd
1541     struct_rusage_ru_maxrss
1542     struct_sockaddr_in6
1543     struct_sockaddr_sa_len
1544     struct_sockaddr_storage
1545     struct_v4l2_frmivalenum_discrete
1546 "
1547
1548 HAVE_LIST="
1549     $ARCH_EXT_LIST
1550     $(add_suffix _external $ARCH_EXT_LIST)
1551     $(add_suffix _inline   $ARCH_EXT_LIST)
1552     $ARCH_FEATURES
1553     $ATOMICS_LIST
1554     $BUILTIN_LIST
1555     $HAVE_LIST_CMDLINE
1556     $HAVE_LIST_PUB
1557     $HEADERS_LIST
1558     $INTRINSICS_LIST
1559     $MATH_FUNCS
1560     $SYSTEM_FUNCS
1561     $THREADS_LIST
1562     $TOOLCHAIN_FEATURES
1563     $TYPES_LIST
1564     atomics_native
1565     dos_paths
1566     dxva2_lib
1567     libc_msvcrt
1568     libdc1394_1
1569     libdc1394_2
1570     sdl
1571     section_data_rel_ro
1572     threads
1573     vaapi_x11
1574     vdpau_x11
1575     xlib
1576 "
1577
1578 # options emitted with CONFIG_ prefix but not available on the command line
1579 CONFIG_EXTRA="
1580     aandcttables
1581     ac3dsp
1582     audio_frame_queue
1583     audiodsp
1584     blockdsp
1585     bswapdsp
1586     cabac
1587     dvprofile
1588     faandct
1589     faanidct
1590     fdctdsp
1591     fmtconvert
1592     gcrypt
1593     gmp
1594     golomb
1595     gplv3
1596     h263dsp
1597     h264chroma
1598     h264dsp
1599     h264pred
1600     h264qpel
1601     hpeldsp
1602     huffman
1603     huffyuvdsp
1604     huffyuvencdsp
1605     idctdsp
1606     iirfilter
1607     imdct15
1608     intrax8
1609     jpegtables
1610     lgplv3
1611     lpc
1612     me_cmp
1613     mpeg_er
1614     mpegaudio
1615     mpegaudiodsp
1616     mpegvideo
1617     mpegvideoenc
1618     pixblockdsp
1619     qpeldsp
1620     qsv
1621     qsvdec
1622     qsvenc
1623     rangecoder
1624     riffdec
1625     riffenc
1626     rtpdec
1627     rtpenc_chain
1628     sinewin
1629     snappy
1630     startcode
1631     texturedsp
1632     texturedspenc
1633     tpeldsp
1634     videodsp
1635     vp3dsp
1636     wma_freqs
1637 "
1638
1639 CMDLINE_SELECT="
1640     $ARCH_EXT_LIST
1641     $CONFIG_LIST
1642     $HAVE_LIST_CMDLINE
1643     $THREADS_LIST
1644     asm
1645     cross_compile
1646     debug
1647     extra_warnings
1648     logging
1649     lto
1650     optimizations
1651     rpath
1652 "
1653
1654 PATHS_LIST="
1655     bindir
1656     datadir
1657     docdir
1658     incdir
1659     libdir
1660     mandir
1661     prefix
1662     shlibdir
1663 "
1664
1665 CMDLINE_SET="
1666     $PATHS_LIST
1667     ar
1668     arch
1669     as
1670     build_suffix
1671     cc
1672     cpu
1673     cross_prefix
1674     dep_cc
1675     env
1676     extra_version
1677     host_cc
1678     host_cflags
1679     host_ld
1680     host_ldflags
1681     host_libs
1682     host_os
1683     ld
1684     logfile
1685     malloc_prefix
1686     nm
1687     optflags
1688     pkg_config
1689     pkg_config_flags
1690     random_seed
1691     samples
1692     sysinclude
1693     sysroot
1694     target_exec
1695     target_os
1696     target_path
1697     target_samples
1698     toolchain
1699 "
1700
1701 CMDLINE_APPEND="
1702     extra_cflags
1703     host_cppflags
1704 "
1705
1706 # code dependency declarations
1707
1708 # architecture extensions
1709
1710 armv5te_deps="arm"
1711 armv6_deps="arm"
1712 armv6t2_deps="arm"
1713 armv8_deps="aarch64"
1714 neon_deps_any="aarch64 arm"
1715 intrinsics_neon_deps="neon"
1716 vfp_deps_any="aarch64 arm"
1717 vfpv3_deps="vfp"
1718
1719 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1720
1721 altivec_deps="ppc"
1722 ppc4xx_deps="ppc"
1723 vsx_deps="altivec"
1724 power8_deps="vsx"
1725
1726 cpunop_deps="i686"
1727 x86_64_select="i686"
1728 x86_64_suggest="fast_cmov"
1729
1730 amd3dnow_deps="mmx"
1731 amd3dnowext_deps="amd3dnow"
1732 i686_deps="x86"
1733 mmx_deps="x86"
1734 mmxext_deps="mmx"
1735 sse_deps="mmxext"
1736 sse2_deps="sse"
1737 sse3_deps="sse2"
1738 ssse3_deps="sse3"
1739 sse4_deps="ssse3"
1740 sse42_deps="sse4"
1741 avx_deps="sse42"
1742 xop_deps="avx"
1743 fma3_deps="avx"
1744 fma4_deps="avx"
1745 avx2_deps="avx"
1746
1747 mmx_external_deps="yasm"
1748 mmx_inline_deps="inline_asm"
1749 mmx_suggest="mmx_external mmx_inline"
1750
1751 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1752     eval dep=\$${ext}_deps
1753     eval ${ext}_external_deps='"${dep}_external"'
1754     eval ${ext}_inline_deps='"${dep}_inline"'
1755     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1756 done
1757
1758 aligned_stack_if_any="aarch64 ppc x86"
1759 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1760 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1761 fast_unaligned_if_any="aarch64 ppc x86"
1762 simd_align_16_if_any="altivec neon sse"
1763
1764 # system capabilities
1765 symver_if_any="symver_asm_label symver_gnu_asm"
1766 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1767
1768 # threading support
1769 atomics_gcc_if="sync_val_compare_and_swap"
1770 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1771 atomics_win32_if="MemoryBarrier"
1772 atomics_native_if_any="$ATOMICS_LIST"
1773 w32threads_deps="atomics_native"
1774 threads_if_any="$THREADS_LIST"
1775
1776 # subsystems
1777 dct_select="rdft"
1778 error_resilience_select="me_cmp"
1779 faandct_deps="faan fdctdsp"
1780 faanidct_deps="faan idctdsp"
1781 intrax8_select="error_resilience"
1782 mdct_select="fft"
1783 rdft_select="fft"
1784 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1785 mpeg_er_select="error_resilience"
1786 mpegaudio_select="mpegaudiodsp"
1787 mpegaudiodsp_select="dct"
1788 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp videodsp"
1789 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1790 nvenc_deps_any="dlopen LoadLibrary"
1791 nvenc_extralibs='$ldl'
1792 qsvdec_select="qsv"
1793 qsvenc_select="qsv"
1794
1795 # decoders / encoders
1796 aac_decoder_select="imdct15 mdct sinewin"
1797 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1798 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1799 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1800 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1801 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1802 aic_decoder_select="golomb idctdsp"
1803 alac_encoder_select="lpc"
1804 als_decoder_select="bswapdsp"
1805 amrnb_decoder_select="lsp"
1806 amrwb_decoder_select="lsp"
1807 amv_decoder_select="sp5x_decoder"
1808 ape_decoder_select="bswapdsp"
1809 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1810 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1811 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1812 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1813 atrac1_decoder_select="mdct sinewin"
1814 atrac3_decoder_select="mdct"
1815 atrac3p_decoder_select="mdct sinewin"
1816 bink_decoder_select="blockdsp hpeldsp"
1817 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1818 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1819 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1820 cllc_decoder_select="bswapdsp"
1821 comfortnoise_encoder_select="lpc"
1822 cook_decoder_select="audiodsp mdct sinewin"
1823 cscd_decoder_select="lzo"
1824 cscd_decoder_suggest="zlib"
1825 dca_decoder_select="fmtconvert mdct"
1826 dds_decoder_select="texturedsp"
1827 dnxhd_decoder_select="blockdsp idctdsp"
1828 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1829 dvvideo_decoder_select="dvprofile idctdsp"
1830 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1831 dxa_decoder_deps="zlib"
1832 eac3_decoder_select="ac3_decoder"
1833 eac3_encoder_select="ac3_encoder"
1834 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1835 eatgq_decoder_select="aandcttables idctdsp"
1836 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
1837 exr_decoder_deps="zlib"
1838 ffv1_decoder_select="golomb rangecoder"
1839 ffv1_encoder_select="rangecoder"
1840 ffvhuff_decoder_select="huffyuv_decoder"
1841 ffvhuff_encoder_select="huffyuv_encoder"
1842 fic_decoder_select="golomb"
1843 flac_decoder_select="golomb"
1844 flac_encoder_select="bswapdsp golomb lpc"
1845 flashsv_decoder_deps="zlib"
1846 flashsv_encoder_deps="zlib"
1847 flashsv2_decoder_deps="zlib"
1848 flv_decoder_select="h263_decoder"
1849 flv_encoder_select="h263_encoder"
1850 fourxm_decoder_select="blockdsp bswapdsp"
1851 fraps_decoder_select="bswapdsp huffman"
1852 g2m_decoder_deps="zlib"
1853 g2m_decoder_select="blockdsp idctdsp jpegtables"
1854 h261_decoder_select="mpeg_er mpegvideo"
1855 h261_encoder_select="aandcttables mpegvideoenc"
1856 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1857 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1858 h263i_decoder_select="h263_decoder"
1859 h263p_encoder_select="h263_encoder"
1860 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
1861 h264_decoder_suggest="error_resilience"
1862 h264_nvenc_encoder_deps="nvenc"
1863 h264_qsv_decoder_deps="libmfx"
1864 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
1865 h264_qsv_encoder_deps="libmfx"
1866 h264_qsv_encoder_select="qsvenc"
1867 hap_decoder_select="snappy texturedsp"
1868 hap_encoder_deps="libsnappy"
1869 hap_encoder_select="texturedspenc"
1870 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1871 hevc_nvenc_encoder_deps="nvenc"
1872 hevc_qsv_encoder_select="qsvenc"
1873 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1874 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1875 iac_decoder_select="imc_decoder"
1876 imc_decoder_select="bswapdsp fft mdct sinewin"
1877 indeo3_decoder_select="hpeldsp"
1878 interplay_video_decoder_select="hpeldsp"
1879 jpegls_decoder_select="golomb mjpeg_decoder"
1880 jpegls_encoder_select="golomb"
1881 jv_decoder_select="blockdsp"
1882 lagarith_decoder_select="huffyuvdsp"
1883 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
1884 loco_decoder_select="golomb"
1885 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1886 metasound_decoder_select="lsp mdct sinewin"
1887 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1888 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
1889 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
1890 mjpegb_decoder_select="mjpeg_decoder"
1891 mlp_decoder_select="mlp_parser"
1892 motionpixels_decoder_select="bswapdsp"
1893 mp1_decoder_select="mpegaudio"
1894 mp1float_decoder_select="mpegaudio"
1895 mp2_decoder_select="mpegaudio"
1896 mp2float_decoder_select="mpegaudio"
1897 mp3_decoder_select="mpegaudio"
1898 mp3adu_decoder_select="mpegaudio"
1899 mp3adufloat_decoder_select="mpegaudio"
1900 mp3float_decoder_select="mpegaudio"
1901 mp3on4_decoder_select="mpegaudio"
1902 mp3on4float_decoder_select="mpegaudio"
1903 mpc7_decoder_select="bswapdsp mpegaudiodsp"
1904 mpc8_decoder_select="mpegaudiodsp"
1905 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1906 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1907 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
1908 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1909 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
1910 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1911 mpeg2_qsv_encoder_select="qsvenc"
1912 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1913 mpeg4_encoder_select="h263_encoder"
1914 msmpeg4v1_decoder_select="h263_decoder"
1915 msmpeg4v2_decoder_select="h263_decoder"
1916 msmpeg4v2_encoder_select="h263_encoder"
1917 msmpeg4v3_decoder_select="h263_decoder"
1918 msmpeg4v3_encoder_select="h263_encoder"
1919 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
1920 mxpeg_decoder_select="mjpeg_decoder"
1921 nellymoser_decoder_select="mdct sinewin"
1922 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1923 nuv_decoder_select="idctdsp lzo"
1924 on2avc_decoder_select="mdct"
1925 opus_decoder_deps="avresample"
1926 opus_decoder_select="imdct15"
1927 png_decoder_deps="zlib"
1928 png_encoder_deps="zlib"
1929 png_encoder_select="huffyuvencdsp"
1930 prores_decoder_select="idctdsp"
1931 prores_encoder_select="fdctdsp"
1932 qcelp_decoder_select="lsp"
1933 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1934 ra_144_encoder_select="audio_frame_queue lpc"
1935 ralf_decoder_select="golomb"
1936 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1937 rv10_encoder_select="h263_encoder"
1938 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1939 rv20_encoder_select="h263_encoder"
1940 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1941 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1942 shorten_decoder_select="golomb"
1943 sipr_decoder_select="lsp"
1944 sp5x_decoder_select="mjpeg_decoder"
1945 svq1_decoder_select="hpeldsp"
1946 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
1947 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1948 svq3_decoder_suggest="zlib"
1949 tak_decoder_select="audiodsp"
1950 tdsc_decoder_deps="zlib"
1951 tdsc_decoder_select="mjpeg_decoder"
1952 theora_decoder_select="vp3_decoder"
1953 thp_decoder_select="mjpeg_decoder"
1954 tiff_decoder_suggest="zlib"
1955 tiff_encoder_suggest="zlib"
1956 truehd_decoder_select="mlp_decoder"
1957 truemotion2_decoder_select="bswapdsp"
1958 truespeech_decoder_select="bswapdsp"
1959 tscc_decoder_deps="zlib"
1960 txd_decoder_select="texturedsp"
1961 twinvq_decoder_select="mdct lsp sinewin"
1962 utvideo_decoder_select="bswapdsp"
1963 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
1964 vble_decoder_select="huffyuvdsp"
1965 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
1966 vc1image_decoder_select="vc1_decoder"
1967 vorbis_decoder_select="mdct"
1968 vorbis_encoder_select="mdct"
1969 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1970 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1971 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1972 vp6a_decoder_select="vp6_decoder"
1973 vp6f_decoder_select="vp6_decoder"
1974 vp7_decoder_select="h264pred videodsp"
1975 vp8_decoder_select="h264pred videodsp"
1976 vp9_decoder_select="videodsp"
1977 webp_decoder_select="vp8_decoder"
1978 wmapro_decoder_select="mdct sinewin wma_freqs"
1979 wmav1_decoder_select="mdct sinewin wma_freqs"
1980 wmav1_encoder_select="mdct sinewin wma_freqs"
1981 wmav2_decoder_select="mdct sinewin wma_freqs"
1982 wmav2_encoder_select="mdct sinewin wma_freqs"
1983 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1984 wmv1_decoder_select="h263_decoder"
1985 wmv1_encoder_select="h263_encoder"
1986 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
1987 wmv2_encoder_select="h263_encoder"
1988 wmv3_decoder_select="vc1_decoder"
1989 wmv3image_decoder_select="wmv3_decoder"
1990 zerocodec_decoder_deps="zlib"
1991 zlib_decoder_deps="zlib"
1992 zlib_encoder_deps="zlib"
1993 zmbv_decoder_deps="zlib"
1994 zmbv_encoder_deps="zlib"
1995
1996 # hardware accelerators
1997 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
1998 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
1999 vaapi_deps="va_va_h"
2000 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2001 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2002 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2003
2004 h263_vaapi_hwaccel_deps="vaapi"
2005 h263_vaapi_hwaccel_select="h263_decoder"
2006 h263_vdpau_hwaccel_deps="vdpau"
2007 h263_vdpau_hwaccel_select="h263_decoder"
2008 h264_d3d11va_hwaccel_deps="d3d11va"
2009 h264_d3d11va_hwaccel_select="h264_decoder"
2010 h264_dxva2_hwaccel_deps="dxva2"
2011 h264_dxva2_hwaccel_select="h264_decoder"
2012 h264_mmal_decoder_deps="mmal"
2013 h264_mmal_hwaccel_deps="mmal"
2014 h264_mmal_decoder_select="h264_decoder"
2015 h264_mmal_encoder_deps="mmal"
2016 h264_qsv_hwaccel_deps="libmfx"
2017 h264_vaapi_hwaccel_deps="vaapi"
2018 h264_vaapi_hwaccel_select="h264_decoder"
2019 h264_vda_hwaccel_deps="vda"
2020 h264_vda_hwaccel_select="h264_decoder"
2021 h264_vda_old_hwaccel_deps="vda"
2022 h264_vda_old_hwaccel_select="h264_decoder"
2023 h264_vdpau_hwaccel_deps="vdpau"
2024 h264_vdpau_hwaccel_select="h264_decoder"
2025 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2026 hevc_d3d11va_hwaccel_select="hevc_decoder"
2027 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2028 hevc_dxva2_hwaccel_select="hevc_decoder"
2029 mpeg1_vdpau_hwaccel_deps="vdpau"
2030 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2031 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2032 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2033 mpeg2_dxva2_hwaccel_deps="dxva2"
2034 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2035 mpeg2_vaapi_hwaccel_deps="vaapi"
2036 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2037 mpeg2_vdpau_hwaccel_deps="vdpau"
2038 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2039 mpeg4_vaapi_hwaccel_deps="vaapi"
2040 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2041 mpeg4_vdpau_hwaccel_deps="vdpau"
2042 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2043 vc1_d3d11va_hwaccel_deps="d3d11va"
2044 vc1_d3d11va_hwaccel_select="vc1_decoder"
2045 vc1_dxva2_hwaccel_deps="dxva2"
2046 vc1_dxva2_hwaccel_select="vc1_decoder"
2047 vc1_vaapi_hwaccel_deps="vaapi"
2048 vc1_vaapi_hwaccel_select="vc1_decoder"
2049 vc1_vdpau_hwaccel_deps="vdpau"
2050 vc1_vdpau_hwaccel_select="vc1_decoder"
2051 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2052 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2053 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2054 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2055
2056 # parsers
2057 h264_parser_select="h264_decoder"
2058 mpegvideo_parser_select="mpegvideo"
2059 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2060 vc1_parser_select="mpegvideo startcode vc1_decoder"
2061
2062 # bitstream_filters
2063 mjpeg2jpeg_bsf_select="jpegtables"
2064
2065 # external libraries
2066 libdcadec_decoder_deps="libdcadec"
2067 libfaac_encoder_deps="libfaac"
2068 libfaac_encoder_select="audio_frame_queue"
2069 libfdk_aac_decoder_deps="libfdk_aac"
2070 libfdk_aac_encoder_deps="libfdk_aac"
2071 libfdk_aac_encoder_select="audio_frame_queue"
2072 libgsm_decoder_deps="libgsm"
2073 libgsm_encoder_deps="libgsm"
2074 libgsm_ms_decoder_deps="libgsm"
2075 libgsm_ms_encoder_deps="libgsm"
2076 libilbc_decoder_deps="libilbc"
2077 libilbc_encoder_deps="libilbc"
2078 libmp3lame_encoder_deps="libmp3lame"
2079 libmp3lame_encoder_select="audio_frame_queue"
2080 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2081 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2082 libopencore_amrnb_encoder_select="audio_frame_queue"
2083 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2084 libopenh264_encoder_deps="libopenh264"
2085 libopenjpeg_decoder_deps="libopenjpeg"
2086 libopenjpeg_encoder_deps="libopenjpeg"
2087 libopus_decoder_deps="libopus"
2088 libopus_encoder_deps="libopus"
2089 libopus_encoder_select="audio_frame_queue"
2090 libschroedinger_decoder_deps="libschroedinger"
2091 libschroedinger_encoder_deps="libschroedinger"
2092 libspeex_decoder_deps="libspeex"
2093 libspeex_encoder_deps="libspeex"
2094 libspeex_encoder_select="audio_frame_queue"
2095 libtheora_encoder_deps="libtheora"
2096 libtwolame_encoder_deps="libtwolame"
2097 libvo_aacenc_encoder_deps="libvo_aacenc"
2098 libvo_aacenc_encoder_select="audio_frame_queue"
2099 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2100 libvorbis_encoder_deps="libvorbis"
2101 libvorbis_encoder_select="audio_frame_queue"
2102 libvpx_vp8_decoder_deps="libvpx"
2103 libvpx_vp8_encoder_deps="libvpx"
2104 libvpx_vp9_decoder_deps="libvpx"
2105 libvpx_vp9_encoder_deps="libvpx"
2106 libwavpack_encoder_deps="libwavpack"
2107 libwebp_encoder_deps="libwebp"
2108 libx264_encoder_deps="libx264"
2109 libx265_encoder_deps="libx265"
2110 libxavs_encoder_deps="libxavs"
2111 libxvid_encoder_deps="libxvid"
2112
2113 # demuxers / muxers
2114 ac3_demuxer_select="ac3_parser"
2115 asf_demuxer_select="riffdec"
2116 asf_muxer_select="riffenc"
2117 asf_stream_muxer_select="asf_muxer"
2118 avi_demuxer_select="riffdec"
2119 avi_muxer_select="riffenc"
2120 avisynth_demuxer_deps="avisynth"
2121 avisynth_demuxer_select="riffdec"
2122 caf_demuxer_select="riffdec"
2123 dash_muxer_select="mp4_muxer"
2124 dirac_demuxer_select="dirac_parser"
2125 dv_demuxer_select="dvprofile"
2126 dv_muxer_select="dvprofile"
2127 dxa_demuxer_select="riffdec"
2128 eac3_demuxer_select="ac3_parser"
2129 f4v_muxer_select="mov_muxer"
2130 flac_demuxer_select="flac_parser"
2131 hds_muxer_select="flv_muxer"
2132 hls_muxer_select="mpegts_muxer"
2133 ipod_muxer_select="mov_muxer"
2134 ismv_muxer_select="mov_muxer"
2135 matroska_audio_muxer_select="matroska_muxer"
2136 matroska_demuxer_select="riffdec"
2137 matroska_demuxer_suggest="bzlib lzo zlib"
2138 matroska_muxer_select="riffenc"
2139 mmf_muxer_select="riffenc"
2140 mov_demuxer_select="riffdec"
2141 mov_demuxer_suggest="zlib"
2142 mov_muxer_select="riffenc rtpenc_chain"
2143 mp3_demuxer_select="mpegaudio_parser"
2144 mp4_muxer_select="mov_muxer"
2145 mpegts_muxer_select="adts_muxer latm_muxer"
2146 mpegtsraw_demuxer_select="mpegts_demuxer"
2147 mxf_d10_muxer_select="mxf_muxer"
2148 nut_muxer_select="riffenc"
2149 nuv_demuxer_select="riffdec"
2150 oga_muxer_select="ogg_muxer"
2151 ogg_demuxer_select="golomb"
2152 opus_muxer_select="ogg_muxer"
2153 psp_muxer_select="mov_muxer"
2154 rtp_demuxer_select="sdp_demuxer"
2155 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2156 rtsp_demuxer_select="http_protocol rtpdec"
2157 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2158 sap_demuxer_select="sdp_demuxer"
2159 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2160 sdp_demuxer_select="rtpdec"
2161 smoothstreaming_muxer_select="ismv_muxer"
2162 spdif_muxer_select="aac_parser"
2163 spx_muxer_select="ogg_muxer"
2164 tak_demuxer_select="tak_parser"
2165 tg2_muxer_select="mov_muxer"
2166 tgp_muxer_select="mov_muxer"
2167 w64_demuxer_select="wav_demuxer"
2168 wav_demuxer_select="riffdec"
2169 wav_muxer_select="riffenc"
2170 webm_muxer_select="riffenc"
2171 wtv_demuxer_select="riffdec"
2172 xmv_demuxer_select="riffdec"
2173 xwma_demuxer_select="riffdec"
2174
2175 # indevs / outdevs
2176 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2177 alsa_outdev_deps="alsa_asoundlib_h"
2178 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2179 dv1394_indev_deps="dv1394"
2180 dv1394_indev_select="dv_demuxer"
2181 fbdev_indev_deps="linux_fb_h"
2182 jack_indev_deps="jack_jack_h pthreads"
2183 libcdio_indev_deps="libcdio"
2184 libdc1394_indev_deps="libdc1394"
2185 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2186 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2187 pulse_indev_deps="libpulse"
2188 sndio_indev_deps="sndio_h"
2189 sndio_outdev_deps="sndio_h"
2190 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2191 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2192 vfwcap_indev_extralibs="-lavicap32"
2193 x11grab_indev_deps="x11grab"
2194 x11grab_xcb_indev_deps="libxcb"
2195
2196 # protocols
2197 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2198 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2199 ffrtmpcrypt_protocol_select="tcp_protocol"
2200 ffrtmphttp_protocol_deps="!librtmp_protocol"
2201 ffrtmphttp_protocol_select="http_protocol"
2202 gopher_protocol_select="network"
2203 http_protocol_select="tcp_protocol"
2204 httpproxy_protocol_select="tcp_protocol"
2205 https_protocol_select="tls_protocol"
2206 icecast_protocol_select="http_protocol"
2207 librtmp_protocol_deps="librtmp"
2208 librtmpe_protocol_deps="librtmp"
2209 librtmps_protocol_deps="librtmp"
2210 librtmpt_protocol_deps="librtmp"
2211 librtmpte_protocol_deps="librtmp"
2212 mmsh_protocol_select="http_protocol"
2213 mmst_protocol_select="network"
2214 rtmp_protocol_deps="!librtmp_protocol"
2215 rtmp_protocol_select="tcp_protocol"
2216 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2217 rtmps_protocol_deps="!librtmp_protocol"
2218 rtmps_protocol_select="tls_protocol"
2219 rtmpt_protocol_select="ffrtmphttp_protocol"
2220 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2221 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2222 rtp_protocol_select="udp_protocol"
2223 sctp_protocol_deps="struct_sctp_event_subscribe"
2224 sctp_protocol_select="network"
2225 srtp_protocol_select="rtp_protocol"
2226 tcp_protocol_select="network"
2227 tls_gnutls_protocol_deps="gnutls"
2228 tls_gnutls_protocol_select="tcp_protocol"
2229 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2230 tls_openssl_protocol_select="tcp_protocol"
2231 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2232 udp_protocol_select="network"
2233 unix_protocol_deps="sys_un_h"
2234 unix_protocol_select="network"
2235
2236 # filters
2237 blackframe_filter_deps="gpl"
2238 boxblur_filter_deps="gpl"
2239 bs2b_filter_deps="libbs2b"
2240 cropdetect_filter_deps="gpl"
2241 delogo_filter_deps="gpl"
2242 drawtext_filter_deps="libfreetype"
2243 frei0r_filter_deps="frei0r dlopen"
2244 frei0r_filter_extralibs='$ldl'
2245 frei0r_src_filter_deps="frei0r dlopen"
2246 frei0r_src_filter_extralibs='$ldl'
2247 hqdn3d_filter_deps="gpl"
2248 interlace_filter_deps="gpl"
2249 ocv_filter_deps="libopencv"
2250 resample_filter_deps="avresample"
2251 scale_filter_deps="swscale"
2252
2253 # examples
2254 avcodec_example_deps="avcodec avutil"
2255 filter_audio_example_deps="avfilter avutil"
2256 metadata_example_deps="avformat avutil"
2257 output_example_deps="avcodec avformat avutil swscale"
2258 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2259 transcode_aac_example_deps="avcodec avformat avresample"
2260
2261 # libraries, in linking order
2262 avcodec_deps="avutil"
2263 avdevice_deps="avformat avcodec avutil"
2264 avfilter_deps="avutil"
2265 avformat_deps="avcodec avutil"
2266 avresample_deps="avutil"
2267 swscale_deps="avutil"
2268
2269 # programs
2270 avconv_deps="avcodec avfilter avformat avresample swscale"
2271 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2272                fps_filter null_filter resample_filter scale_filter
2273                setpts_filter trim_filter"
2274 avplay_deps="avcodec avformat avresample swscale sdl"
2275 avplay_libs='$sdl_libs'
2276 avplay_select="rdft transpose_filter hflip_filter vflip_filter"
2277 avprobe_deps="avcodec avformat"
2278
2279 # documentation
2280 pod2man_deps="doc"
2281 texi2html_deps="doc"
2282
2283 # default parameters
2284
2285 logfile="config.log"
2286
2287 # installation paths
2288 prefix_default="/usr/local"
2289 bindir_default='${prefix}/bin'
2290 datadir_default='${prefix}/share/avconv'
2291 docdir_default='${prefix}/share/doc/libav'
2292 incdir_default='${prefix}/include'
2293 libdir_default='${prefix}/lib'
2294 mandir_default='${prefix}/share/man'
2295 shlibdir_default="$libdir_default"
2296
2297 # toolchain
2298 ar_default="ar"
2299 cc_default="gcc"
2300 host_cc_default="gcc"
2301 cp_f="cp -f"
2302 ln_s="ln -s -f"
2303 nm_default="nm -g"
2304 objformat="elf"
2305 pkg_config_default=pkg-config
2306 ranlib="ranlib"
2307 strip="strip"
2308 yasmexe="yasm"
2309
2310 # machine
2311 arch_default=$(uname -m)
2312 cpu="generic"
2313 intrinsics="none"
2314
2315 # OS
2316 target_os_default=$(tolower $(uname -s))
2317 host_os=$target_os_default
2318
2319 # configurable options
2320 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2321
2322 enable asm
2323 enable debug
2324 enable doc
2325 enable faan faandct faanidct
2326 enable optimizations
2327 enable safe_bitstream_reader
2328 enable static
2329 enable swscale_alpha
2330 enable valgrind_backtrace
2331
2332 # By default, enable only those hwaccels that have no external dependencies.
2333 enable d3d11va dxva2 vda vdpau
2334
2335 # build settings
2336 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2337 LIBPREF="lib"
2338 LIBSUF=".a"
2339 FULLNAME='$(NAME)$(BUILDSUF)'
2340 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2341 SLIBPREF="lib"
2342 SLIBSUF=".so"
2343 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2344 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2345 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2346 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2347 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2348 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2349
2350 asflags_filter=echo
2351 cflags_filter=echo
2352 ldflags_filter=echo
2353
2354 AS_C='-c'
2355 AS_O='-o $@'
2356 CC_C='-c'
2357 CC_E='-E -o $@'
2358 CC_O='-o $@'
2359 LD_O='-o $@'
2360 LD_LIB='-l%'
2361 LD_PATH='-L'
2362 HOSTCC_C='-c'
2363 HOSTCC_E='-E -o $@'
2364 HOSTCC_O='-o $@'
2365 HOSTLD_O='-o $@'
2366
2367 host_libs='-lm'
2368 host_cflags_filter=echo
2369 host_ldflags_filter=echo
2370
2371 target_path='$(CURDIR)'
2372
2373 # since the object filename is not given with the -MM flag, the compiler
2374 # is only able to print the basename, and we must add the path ourselves
2375 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2376 DEPFLAGS='-MM'
2377
2378 # find source path
2379 if test -f configure; then
2380     source_path=.
2381 else
2382     source_path=$(cd $(dirname "$0"); pwd)
2383     echo "$source_path" | grep -q '[[:blank:]]' &&
2384         die "Out of tree builds are impossible with whitespace in source path."
2385     test -e "$source_path/config.h" &&
2386         die "Out of tree builds are impossible with config.h in source dir."
2387 fi
2388
2389 for v in "$@"; do
2390     r=${v#*=}
2391     l=${v%"$r"}
2392     r=$(sh_quote "$r")
2393     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2394 done
2395
2396 find_things(){
2397     thing=$1
2398     pattern=$2
2399     file=$source_path/$3
2400     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2401 }
2402
2403 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2404 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2405 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2406 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2407 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2408 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2409 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2410 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2411 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2412 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2413 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2414
2415 ALL_COMPONENTS="
2416     $BSF_LIST
2417     $DECODER_LIST
2418     $DEMUXER_LIST
2419     $ENCODER_LIST
2420     $FILTER_LIST
2421     $HWACCEL_LIST
2422     $INDEV_LIST
2423     $MUXER_LIST
2424     $OUTDEV_LIST
2425     $PARSER_LIST
2426     $PROTOCOL_LIST
2427 "
2428
2429 for n in $COMPONENT_LIST; do
2430     v=$(toupper ${n%s})_LIST
2431     eval enable \$$v
2432     eval ${n}_if_any="\$$v"
2433 done
2434
2435 enable $ARCH_EXT_LIST
2436
2437 die_unknown(){
2438     echo "Unknown option \"$1\"."
2439     echo "See $0 --help for available options."
2440     exit 1
2441 }
2442
2443 print_3_columns() {
2444     cat | tr ' ' '\n' | sort | pr -r -3 -t
2445 }
2446
2447 show_list() {
2448     suffix=_$1
2449     shift
2450     echo $* | sed s/$suffix//g | print_3_columns
2451     exit 0
2452 }
2453
2454 rand_list(){
2455     IFS=', '
2456     set -- $*
2457     unset IFS
2458     for thing; do
2459         comp=${thing%:*}
2460         prob=${thing#$comp}
2461         prob=${prob#:}
2462         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2463         echo "prob ${prob:-0.5}"
2464         printf '%s\n' $comp
2465     done
2466 }
2467
2468 do_random(){
2469     action=$1
2470     shift
2471     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2472     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2473 }
2474
2475 for opt do
2476     optval="${opt#*=}"
2477     case "$opt" in
2478         --extra-ldflags=*)
2479             add_ldflags $optval
2480         ;;
2481         --extra-ldexeflags=*)
2482             add_ldexeflags $optval
2483         ;;
2484         --extra-libs=*)
2485             add_extralibs $optval
2486         ;;
2487         --disable-devices)
2488             disable $INDEV_LIST $OUTDEV_LIST
2489         ;;
2490         --enable-debug=*)
2491             debuglevel="$optval"
2492         ;;
2493         --disable-programs)
2494             disable $PROGRAM_LIST
2495         ;;
2496         --disable-everything)
2497             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2498         ;;
2499         --disable-all)
2500             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2501             disable $LIBRARY_LIST $PROGRAM_LIST doc
2502         ;;
2503         --enable-random|--disable-random)
2504             action=${opt%%-random}
2505             do_random ${action#--} $COMPONENT_LIST
2506         ;;
2507         --enable-random=*|--disable-random=*)
2508             action=${opt%%-random=*}
2509             do_random ${action#--} $optval
2510         ;;
2511         --enable-*=*|--disable-*=*)
2512             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2513             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2514             eval list=\$$(toupper $thing)_LIST
2515             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2516             $action $(filter "$name" $list)
2517         ;;
2518         --enable-avserver|--disable-avserver*)
2519             warn "avserver has been removed, the ${opt} option is only"\
2520                  "provided for compatibility and will be removed in the future"
2521         ;;
2522         --enable-?*|--disable-?*)
2523             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2524             if is_in $option $COMPONENT_LIST; then
2525                 test $action = disable && action=unset
2526                 eval $action \$$(toupper ${option%s})_LIST
2527             elif is_in $option $CMDLINE_SELECT; then
2528                 $action $option
2529             else
2530                 die_unknown $opt
2531             fi
2532         ;;
2533         --list-*)
2534             NAME="${opt#--list-}"
2535             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2536             NAME=${NAME%s}
2537             eval show_list $NAME \$$(toupper $NAME)_LIST
2538         ;;
2539         --help|-h) show_help
2540         ;;
2541         *)
2542             optname="${opt%%=*}"
2543             optname="${optname#--}"
2544             optname=$(echo "$optname" | sed 's/-/_/g')
2545             if is_in $optname $CMDLINE_SET; then
2546                 eval $optname='$optval'
2547             elif is_in $optname $CMDLINE_APPEND; then
2548                 append $optname "$optval"
2549             else
2550                 die_unknown $opt
2551             fi
2552         ;;
2553     esac
2554 done
2555
2556 for e in $env; do
2557     eval "export $e"
2558 done
2559
2560 disabled logging && logfile=/dev/null
2561
2562 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2563 set >> $logfile
2564
2565 case "$toolchain" in
2566     clang-asan)
2567         cc_default="clang"
2568         add_cflags  -fsanitize=address
2569         add_ldflags -fsanitize=address
2570     ;;
2571     clang-tsan)
2572         cc_default="clang"
2573         add_cflags  -fsanitize=thread -pie
2574         add_ldflags -fsanitize=thread -pie
2575     ;;
2576     clang-usan)
2577         cc_default="clang"
2578         add_cflags  -fsanitize=undefined -O1
2579         add_ldflags -fsanitize=undefined
2580     ;;
2581     gcc-asan)
2582         cc_default="gcc"
2583         add_cflags  -fsanitize=address
2584         add_ldflags -fsanitize=address
2585     ;;
2586     gcc-tsan)
2587         cc_default="gcc"
2588         add_cflags  -fsanitize=thread -pie -fPIC
2589         add_ldflags -fsanitize=thread -pie -fPIC
2590     ;;
2591     gcc-usan)
2592         cc_default="gcc"
2593         add_cflags  -fsanitize=undefined
2594         add_ldflags -fsanitize=undefined
2595     ;;
2596     valgrind-massif)
2597         target_exec_default="valgrind"
2598         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2599     ;;
2600     valgrind-memcheck)
2601         target_exec_default="valgrind"
2602         target_exec_args="--track-origins=yes --leak-check=full"
2603     ;;
2604     msvc)
2605         # Check whether the current MSVC version needs the C99 converter.
2606         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2607         # support enough of C99 to build libav. Default to the new
2608         # behaviour if the regexp was unable to match anything, since this
2609         # successfully parses the version number of existing supported
2610         # versions that require the converter (MSVC 2010 and 2012).
2611         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2612         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2613             cc_default="cl"
2614         else
2615             cc_default="c99wrap cl"
2616         fi
2617         ld_default="link"
2618         nm_default="dumpbin -symbols"
2619         ar_default="lib"
2620         target_os_default="win32"
2621         # Use a relative path for TMPDIR. This makes sure all the
2622         # ffconf temp files are written with a relative path, avoiding
2623         # issues with msys/win32 path conversion for MSVC parameters
2624         # such as -Fo<file> or -out:<file>.
2625         TMPDIR=.
2626     ;;
2627     icl)
2628         cc_default="icl"
2629         ld_default="xilink"
2630         nm_default="dumpbin -symbols"
2631         ar_default="xilib"
2632         target_os_default="win32"
2633         TMPDIR=.
2634     ;;
2635     gcov)
2636         add_cflags  -fprofile-arcs -ftest-coverage
2637         add_ldflags -fprofile-arcs -ftest-coverage
2638     ;;
2639     hardened)
2640         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2641         add_cflags   -fno-strict-overflow -fstack-protector-all
2642         add_ldflags  -Wl,-z,relro -Wl,-z,now
2643     ;;
2644     ?*)
2645         die "Unknown toolchain $toolchain"
2646     ;;
2647 esac
2648
2649 test -n "$cross_prefix" && enable cross_compile
2650
2651 if enabled cross_compile; then
2652     test -n "$arch" && test -n "$target_os" ||
2653         die "Must specify target arch and OS when cross-compiling"
2654 fi
2655
2656 ar_default="${cross_prefix}${ar_default}"
2657 cc_default="${cross_prefix}${cc_default}"
2658 nm_default="${cross_prefix}${nm_default}"
2659 pkg_config_default="${cross_prefix}${pkg_config_default}"
2660 ranlib="${cross_prefix}${ranlib}"
2661 strip="${cross_prefix}${strip}"
2662
2663 sysinclude_default="${sysroot}/usr/include"
2664
2665 set_default arch cc pkg_config sysinclude target_exec target_os
2666 enabled cross_compile || host_cc_default=$cc
2667 set_default host_cc
2668
2669 if ! $pkg_config --version >/dev/null 2>&1; then
2670     warn "$pkg_config not found, library detection may fail."
2671     pkg_config=false
2672 fi
2673
2674 exesuf() {
2675     case $1 in
2676         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2677     esac
2678 }
2679
2680 EXESUF=$(exesuf $target_os)
2681 HOSTEXESUF=$(exesuf $host_os)
2682
2683 # set temporary file name
2684 : ${TMPDIR:=$TEMPDIR}
2685 : ${TMPDIR:=$TMP}
2686 : ${TMPDIR:=/tmp}
2687
2688 if ! check_cmd mktemp -u XXXXXX; then
2689     # simple replacement for missing mktemp
2690     # NOT SAFE FOR GENERAL USE
2691     mktemp(){
2692         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2693     }
2694 fi
2695
2696 tmpfile(){
2697     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2698         (set -C; exec > $tmp) 2>/dev/null ||
2699         die "Unable to create temporary file in $TMPDIR."
2700     append TMPFILES $tmp
2701     eval $1=$tmp
2702 }
2703
2704 trap 'rm -f -- $TMPFILES' EXIT
2705
2706 tmpfile TMPASM .asm
2707 tmpfile TMPC   .c
2708 tmpfile TMPE   $EXESUF
2709 tmpfile TMPH   .h
2710 tmpfile TMPO   .o
2711 tmpfile TMPS   .S
2712 tmpfile TMPSH  .sh
2713 tmpfile TMPV   .ver
2714
2715 unset -f mktemp
2716
2717 chmod +x $TMPE
2718
2719 # make sure we can execute files in $TMPDIR
2720 cat > $TMPSH 2>> $logfile <<EOF
2721 #! /bin/sh
2722 EOF
2723 chmod +x $TMPSH >> $logfile 2>&1
2724 if ! $TMPSH >> $logfile 2>&1; then
2725     cat <<EOF
2726 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2727 variable to another directory and make sure that it is not mounted noexec.
2728 EOF
2729     die "Sanity test failed."
2730 fi
2731
2732 armasm_flags(){
2733     for flag; do
2734         case $flag in
2735             # Filter out MSVC cl.exe options from cflags that shouldn't
2736             # be passed to gas-preprocessor
2737             -M[TD]*)                                            ;;
2738             *)                  echo $flag                      ;;
2739         esac
2740    done
2741 }
2742
2743 ccc_flags(){
2744     for flag; do
2745         case $flag in
2746             -std=c99)           echo -c99                       ;;
2747             -mcpu=*)            echo -arch ${flag#*=}           ;;
2748             -mieee)             echo -ieee                      ;;
2749             -O*|-fast)          echo $flag                      ;;
2750             -fno-math-errno)    echo -assume nomath_errno       ;;
2751             -g)                 echo -g3                        ;;
2752             -Wall)              echo -msg_enable level2         ;;
2753             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2754             -Wl,*)              echo $flag                      ;;
2755             -f*|-W*)                                            ;;
2756             *)                  echo $flag                      ;;
2757         esac
2758    done
2759 }
2760
2761 cparser_flags(){
2762     for flag; do
2763         case $flag in
2764             -Wno-switch)             echo -Wno-switch-enum ;;
2765             -Wno-format-zero-length) ;;
2766             -Wdisabled-optimization) ;;
2767             -Wno-pointer-sign)       echo -Wno-other ;;
2768             *)                       echo $flag ;;
2769         esac
2770     done
2771 }
2772
2773 msvc_common_flags(){
2774     for flag; do
2775         case $flag in
2776             # In addition to specifying certain flags under the compiler
2777             # specific filters, they must be specified here as well or else the
2778             # generic catch all at the bottom will print the original flag.
2779             -Wall)                ;;
2780             -std=c99)             ;;
2781             # Common flags
2782             -fomit-frame-pointer) ;;
2783             -g)                   echo -Z7 ;;
2784             -fno-math-errno)      ;;
2785             -fno-common)          ;;
2786             -fno-signed-zeros)    ;;
2787             -fPIC)                ;;
2788             -mthumb)              ;;
2789             -march=*)             ;;
2790             -lz)                  echo zlib.lib ;;
2791             -lavifil32)           echo vfw32.lib ;;
2792             -lavicap32)           echo vfw32.lib user32.lib ;;
2793             -l*)                  echo ${flag#-l}.lib ;;
2794             -L*)                  echo -libpath:${flag#-L} ;;
2795             *)                    echo $flag ;;
2796         esac
2797     done
2798 }
2799
2800 msvc_flags(){
2801     msvc_common_flags "$@"
2802     for flag; do
2803         case $flag in
2804             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2805                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2806                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2807                                        -wd4273 -wd4554 -wd4701 ;;
2808         esac
2809     done
2810 }
2811
2812 icl_flags(){
2813     msvc_common_flags "$@"
2814     for flag; do
2815         case $flag in
2816             # Despite what Intel's documentation says -Wall, which is supported
2817             # on Windows, does enable remarks so disable them here.
2818             -Wall)                echo $flag -Qdiag-disable:remark ;;
2819             -std=c99)             echo -Qstd=c99 ;;
2820         esac
2821     done
2822 }
2823
2824 pgi_flags(){
2825     for flag; do
2826         case $flag in
2827             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2828             -fomit-frame-pointer) echo -Mnoframe ;;
2829             -g)                   echo -gopt ;;
2830             *)                    echo $flag ;;
2831         esac
2832     done
2833 }
2834
2835 suncc_flags(){
2836     for flag; do
2837         case $flag in
2838             -march=*|-mcpu=*)
2839                 case "${flag#*=}" in
2840                     native)                   echo -xtarget=native       ;;
2841                     v9|niagara)               echo -xarch=sparc          ;;
2842                     ultrasparc)               echo -xarch=sparcvis       ;;
2843                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2844                     i586|pentium)             echo -xchip=pentium        ;;
2845                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2846                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2847                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2848                     pentium4*)          echo -xtarget=pentium4           ;;
2849                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2850                     *-sse3)             echo -xarch=sse3                 ;;
2851                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2852                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2853                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2854                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2855                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2856                     k8|opteron|athlon64|athlon-fx)
2857                                                echo -xarch=sse2a         ;;
2858                     athlon*)                   echo -xarch=pentium_proa  ;;
2859                 esac
2860                 ;;
2861             -std=c99)             echo -xc99              ;;
2862             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2863             -fPIC)                echo -KPIC -xcode=pic32 ;;
2864             -W*,*)                echo $flag              ;;
2865             -f*-*|-W*|-mimpure-text)                      ;;
2866             -shared)              echo -G                 ;;
2867             *)                    echo $flag              ;;
2868         esac
2869     done
2870 }
2871
2872 tms470_flags(){
2873     for flag; do
2874         case $flag in
2875             -march=*|-mcpu=*)
2876                 case "${flag#*=}" in
2877                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2878                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2879                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2880                     armv6*|arm11*)          echo -mv=6   ;;
2881                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2882                                             echo -mv=5e  ;;
2883                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2884                 esac
2885                 ;;
2886             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2887             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2888             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2889             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2890             -msoft-float)   echo --float_support=vfplib       ;;
2891             -O[0-3]|-mf=*)  echo $flag                        ;;
2892             -g)             echo -g -mn                       ;;
2893             -pds=*)         echo $flag                        ;;
2894             -D*|-I*)        echo $flag                        ;;
2895             --gcc|--abi=*)  echo $flag                        ;;
2896             -me)            echo $flag                        ;;
2897         esac
2898     done
2899 }
2900
2901 probe_cc(){
2902     pfx=$1
2903     _cc=$2
2904
2905     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2906     unset _ld_o _ldflags _ld_lib _ld_path
2907     unset _depflags _DEPCMD _DEPFLAGS
2908     _flags_filter=echo
2909
2910     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2911         _type=llvm_gcc
2912         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2913         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2914         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2915         _cflags_speed='-O3'
2916         _cflags_size='-Os'
2917     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2918         _type=gcc
2919         gcc_version=$($_cc --version | head -n1)
2920         gcc_basever=$($_cc -dumpversion)
2921         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2922         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2923         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2924         if ! $_cc -dumpversion | grep -q '^2\.'; then
2925             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2926         fi
2927         _cflags_speed='-O3'
2928         _cflags_size='-Os'
2929     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2930         _type=icc
2931         _ident=$($_cc --version | head -n1)
2932         _depflags='-MMD'
2933         _cflags_speed='-O3'
2934         _cflags_size='-Os'
2935         _cflags_noopt='-O1'
2936     elif $_cc -v 2>&1 | grep -q xlc; then
2937         _type=xlc
2938         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2939         _cflags_speed='-O5'
2940         _cflags_size='-O5 -qcompact'
2941     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2942         _type=ccc
2943         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2944         _DEPFLAGS='-M'
2945         _cflags_speed='-fast'
2946         _cflags_size='-O1'
2947         _flags_filter=ccc_flags
2948     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2949         test -d "$sysroot" || die "No valid sysroot specified."
2950         _type=armcc
2951         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
2952         armcc_conf="$PWD/armcc.conf"
2953         $_cc --arm_linux_configure                 \
2954              --arm_linux_config_file="$armcc_conf" \
2955              --configure_sysroot="$sysroot"        \
2956              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2957              die "Error creating armcc configuration file."
2958         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2959         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2960         as_default="${cross_prefix}gcc"
2961         _depflags='-MMD'
2962         _cflags_speed='-O3'
2963         _cflags_size='-Os'
2964     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2965         _type=tms470
2966         _ident=$($_cc -version | head -n1 | tr -s ' ')
2967         _flags='--gcc --abi=eabi -me'
2968         _cc_e='-ppl -fe=$@'
2969         _cc_o='-fe=$@'
2970         _depflags='-ppa -ppd=$(@:.o=.d)'
2971         _cflags_speed='-O3 -mf=5'
2972         _cflags_size='-O3 -mf=2'
2973         _flags_filter=tms470_flags
2974     elif $_cc -v 2>&1 | grep -q clang; then
2975         _type=clang
2976         _ident=$($_cc --version | head -n1)
2977         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2978         _cflags_speed='-O3'
2979         _cflags_size='-Os'
2980     elif $_cc -V 2>&1 | grep -q Sun; then
2981         _type=suncc
2982         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2983         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2984         _DEPFLAGS='-xM1 -xc99'
2985         _ldflags='-std=c99'
2986         _cflags_speed='-O5'
2987         _cflags_size='-O5 -xspace'
2988         _flags_filter=suncc_flags
2989     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2990         _type=pathscale
2991         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2992         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2993         _cflags_speed='-O2'
2994         _cflags_size='-Os'
2995         _flags_filter='filter_out -Wdisabled-optimization'
2996     elif $_cc -v 2>&1 | grep -q Open64; then
2997         _type=open64
2998         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2999         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3000         _cflags_speed='-O2'
3001         _cflags_size='-Os'
3002         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3003     elif $_cc -V 2>&1 | grep -q Portland; then
3004         _type=pgi
3005         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3006         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3007         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3008         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3009         _cflags_noopt="-O1"
3010         _flags_filter=pgi_flags
3011     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3012         _type=armasm
3013         _ident=$($_cc | head -n1)
3014         # 4509: "This form of conditional instruction is deprecated"
3015         _flags="-nologo -ignore 4509"
3016         _flags_filter=armasm_flags
3017     elif $_cc 2>&1 | grep -q Microsoft; then
3018         _type=msvc
3019         _ident=$($_cc 2>&1 | head -n1)
3020         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3021         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3022         _cflags_speed="-O2"
3023         _cflags_size="-O1"
3024         if $_cc 2>&1 | grep -q Linker; then
3025             _ld_o='-out:$@'
3026         else
3027             _ld_o='-Fe$@'
3028         fi
3029         _cc_o='-Fo$@'
3030         _cc_e='-P -Fi$@'
3031         _flags_filter=msvc_flags
3032         _ld_lib='lib%.a'
3033         _ld_path='-libpath:'
3034         _flags='-nologo'
3035         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3036     elif $_cc 2>&1 | grep -q Intel; then
3037         _type=icl
3038         _ident=$($_cc 2>&1 | head -n1)
3039         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3040         # Not only is O3 broken on 13.x+ but it is slower on all previous
3041         # versions (tested) as well.
3042         _cflags_speed="-O2"
3043         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3044         if $_cc 2>&1 | grep -q Linker; then
3045             _ld_o='-out:$@'
3046         else
3047             _ld_o='-Fe$@'
3048         fi
3049         _cc_o='-Fo$@'
3050         _cc_e='-P'
3051         _flags_filter=icl_flags
3052         _ld_lib='lib%.a'
3053         _ld_path='-libpath:'
3054         # -Qdiag-error to make icl error when seeing certain unknown arguments
3055         _flags='-nologo -Qdiag-error:4044,10157'
3056         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3057         # with MSVC which enables it by default.
3058         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3059     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3060         _type=cparser
3061         _ident=$($_cc --version | head -n1)
3062         _depflags='-MMD'
3063         _cflags_speed='-O4'
3064         _cflags_size='-O2'
3065         _flags_filter=cparser_flags
3066     fi
3067
3068     eval ${pfx}_type=\$_type
3069     eval ${pfx}_ident=\$_ident
3070 }
3071
3072 set_ccvars(){
3073     eval ${1}_C=\${_cc_c-\${${1}_C}}
3074     eval ${1}_E=\${_cc_e-\${${1}_E}}
3075     eval ${1}_O=\${_cc_o-\${${1}_O}}
3076
3077     if [ -n "$_depflags" ]; then
3078         eval ${1}_DEPFLAGS=\$_depflags
3079     else
3080         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3081         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3082         eval DEP${1}FLAGS=\$_flags
3083     fi
3084 }
3085
3086 probe_cc cc "$cc"
3087 cflags_filter=$_flags_filter
3088 cflags_speed=$_cflags_speed
3089 cflags_size=$_cflags_size
3090 cflags_noopt=$_cflags_noopt
3091 add_cflags $_flags $_cflags
3092 cc_ldflags=$_ldflags
3093 set_ccvars CC
3094
3095 probe_cc hostcc "$host_cc"
3096 host_cflags_filter=$_flags_filter
3097 add_host_cflags  $_flags $_cflags
3098 set_ccvars HOSTCC
3099
3100 test -n "$cc_type" && enable $cc_type ||
3101     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3102
3103 : ${as_default:=$cc}
3104 : ${dep_cc_default:=$cc}
3105 : ${ld_default:=$cc}
3106 : ${host_ld_default:=$host_cc}
3107 set_default ar as dep_cc ld host_ld
3108
3109 probe_cc as "$as"
3110 asflags_filter=$_flags_filter
3111 add_asflags $_flags $_cflags
3112 set_ccvars AS
3113
3114 probe_cc ld "$ld"
3115 ldflags_filter=$_flags_filter
3116 add_ldflags $_flags $_ldflags
3117 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3118 LD_O=${_ld_o-$LD_O}
3119 LD_LIB=${_ld_lib-$LD_LIB}
3120 LD_PATH=${_ld_path-$LD_PATH}
3121
3122 probe_cc hostld "$host_ld"
3123 host_ldflags_filter=$_flags_filter
3124 add_host_ldflags $_flags $_ldflags
3125 HOSTLD_O=${_ld_o-$HOSTLD_O}
3126
3127 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3128     probe_cc depcc "$dep_cc"
3129     CCDEP=${_DEPCMD:-$DEPCMD}
3130     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3131     DEPCCFLAGS=$_flags
3132 fi
3133
3134 if $ar 2>&1 | grep -q Microsoft; then
3135     arflags="-nologo"
3136     ar_o='-out:$@'
3137 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3138     arflags="rq"
3139     ar_o='$@'
3140 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3141     arflags='-Xany -r -c'
3142     ar_o='$@'
3143 else
3144     arflags="rc"
3145     ar_o='$@'
3146 fi
3147
3148 add_cflags $extra_cflags
3149 add_asflags $extra_cflags
3150
3151 if test -n "$sysroot"; then
3152     case "$cc_type" in
3153         gcc|llvm_gcc|clang)
3154             add_cppflags --sysroot="$sysroot"
3155             add_ldflags --sysroot="$sysroot"
3156         ;;
3157         tms470)
3158             add_cppflags -I"$sysinclude"
3159             add_ldflags  --sysroot="$sysroot"
3160         ;;
3161     esac
3162 fi
3163
3164 if test "$cpu" = host; then
3165     enabled cross_compile &&
3166         die "--cpu=host makes no sense when cross-compiling."
3167
3168     case "$cc_type" in
3169         gcc|llvm_gcc)
3170             check_native(){
3171                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3172                 sed -n "/cc1.*$1=/{
3173                             s/.*$1=\\([^ ]*\\).*/\\1/
3174                             p
3175                             q
3176                         }" $TMPE
3177             }
3178             cpu=$(check_native -march || check_native -mcpu)
3179         ;;
3180     esac
3181
3182     test "${cpu:-host}" = host &&
3183         die "--cpu=host not supported with compiler $cc"
3184 fi
3185
3186 # Deal with common $arch aliases
3187 case "$arch" in
3188     aarch64|arm64)
3189         arch="aarch64"
3190     ;;
3191     arm*)
3192         arch="arm"
3193     ;;
3194     mips*|IP*)
3195         arch="mips"
3196     ;;
3197     parisc*|hppa*)
3198         arch="parisc"
3199     ;;
3200     "Power Macintosh"|ppc*|powerpc*)
3201         arch="ppc"
3202     ;;
3203     s390|s390x)
3204         arch="s390"
3205     ;;
3206     sh4|sh)
3207         arch="sh4"
3208     ;;
3209     sun4u|sparc*)
3210         arch="sparc"
3211     ;;
3212     tilegx|tile-gx)
3213         arch="tilegx"
3214     ;;
3215     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3216         arch="x86"
3217     ;;
3218 esac
3219
3220 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3221 enable $arch
3222
3223 # Add processor-specific flags
3224 if enabled aarch64; then
3225
3226     case $cpu in
3227         armv*)
3228             cpuflags="-march=$cpu"
3229         ;;
3230         *)
3231             cpuflags="-mcpu=$cpu"
3232         ;;
3233     esac
3234
3235 elif enabled alpha; then
3236
3237     cpuflags="-mcpu=$cpu"
3238
3239 elif enabled arm; then
3240
3241     check_arm_arch() {
3242         check_cpp_condition stddef.h \
3243             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3244             $cpuflags
3245     }
3246
3247     probe_arm_arch() {
3248         if   check_arm_arch 4;        then echo armv4;
3249         elif check_arm_arch 4T;       then echo armv4t;
3250         elif check_arm_arch 5;        then echo armv5;
3251         elif check_arm_arch 5E;       then echo armv5e;
3252         elif check_arm_arch 5T;       then echo armv5t;
3253         elif check_arm_arch 5TE;      then echo armv5te;
3254         elif check_arm_arch 5TEJ;     then echo armv5te;
3255         elif check_arm_arch 6;        then echo armv6;
3256         elif check_arm_arch 6J;       then echo armv6j;
3257         elif check_arm_arch 6K;       then echo armv6k;
3258         elif check_arm_arch 6Z;       then echo armv6z;
3259         elif check_arm_arch 6ZK;      then echo armv6zk;
3260         elif check_arm_arch 6T2;      then echo armv6t2;
3261         elif check_arm_arch 7;        then echo armv7;
3262         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3263         elif check_arm_arch 7S;       then echo armv7-a;
3264         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3265         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3266         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3267         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3268         fi
3269     }
3270
3271     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3272
3273     case $cpu in
3274         armv*)
3275             cpuflags="-march=$cpu"
3276             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3277         ;;
3278         *)
3279             cpuflags="-mcpu=$cpu"
3280             case $cpu in
3281                 cortex-a*)                               subarch=armv7a  ;;
3282                 cortex-r*)                               subarch=armv7r  ;;
3283                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3284                 arm11*)                                  subarch=armv6   ;;
3285                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3286                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3287                 *)                             subarch=$(probe_arm_arch) ;;
3288             esac
3289         ;;
3290     esac
3291
3292     case "$subarch" in
3293         armv5t*)    enable fast_clz                ;;
3294         armv[6-8]*) enable fast_clz fast_unaligned ;;
3295     esac
3296
3297 elif enabled avr32; then
3298
3299     case $cpu in
3300         ap7[02]0[0-2])
3301             subarch="avr32_ap"
3302             cpuflags="-mpart=$cpu"
3303         ;;
3304         ap)
3305             subarch="avr32_ap"
3306             cpuflags="-march=$cpu"
3307         ;;
3308         uc3[ab]*)
3309             subarch="avr32_uc"
3310             cpuflags="-mcpu=$cpu"
3311         ;;
3312         uc)
3313             subarch="avr32_uc"
3314             cpuflags="-march=$cpu"
3315         ;;
3316     esac
3317
3318 elif enabled bfin; then
3319
3320     cpuflags="-mcpu=$cpu"
3321
3322 elif enabled mips; then
3323
3324     cpuflags="-march=$cpu"
3325
3326 elif enabled ppc; then
3327
3328     disable ldbrx
3329
3330     case $(tolower $cpu) in
3331         601|ppc601|powerpc601)
3332             cpuflags="-mcpu=601"
3333             disable altivec
3334         ;;
3335         603*|ppc603*|powerpc603*)
3336             cpuflags="-mcpu=603"
3337             disable altivec
3338         ;;
3339         604*|ppc604*|powerpc604*)
3340             cpuflags="-mcpu=604"
3341             disable altivec
3342         ;;
3343         g3|75*|ppc75*|powerpc75*)
3344             cpuflags="-mcpu=750"
3345             disable altivec
3346         ;;
3347         g4|745*|ppc745*|powerpc745*)
3348             cpuflags="-mcpu=7450"
3349             disable vsx
3350         ;;
3351         74*|ppc74*|powerpc74*)
3352             cpuflags="-mcpu=7400"
3353             disable vsx
3354         ;;
3355         g5|970|ppc970|powerpc970)
3356             cpuflags="-mcpu=970"
3357             disable vsx
3358         ;;
3359         power[3-6]*)
3360             cpuflags="-mcpu=$cpu"
3361             disable vsx
3362         ;;
3363         power[7-8]*)
3364             cpuflags="-mcpu=$cpu"
3365             enable ldbrx
3366         ;;
3367         cell)
3368             cpuflags="-mcpu=cell"
3369             enable ldbrx
3370             disable vsx
3371         ;;
3372         e500mc)
3373             cpuflags="-mcpu=e500mc"
3374             disable altivec
3375         ;;
3376         e500v2)
3377             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3378             disable altivec
3379             disable dcbzl
3380         ;;
3381         e500)
3382             cpuflags="-mcpu=8540 -mhard-float"
3383             disable altivec
3384             disable dcbzl
3385         ;;
3386     esac
3387
3388 elif enabled sparc; then
3389
3390     case $cpu in
3391         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3392             cpuflags="-mcpu=$cpu"
3393         ;;
3394         ultrasparc*|niagara[234])
3395             cpuflags="-mcpu=$cpu"
3396         ;;
3397     esac
3398
3399 elif enabled x86; then
3400
3401     case $cpu in
3402         i[345]86|pentium)
3403             cpuflags="-march=$cpu"
3404             disable i686
3405             disable mmx
3406         ;;
3407         # targets that do NOT support nopl and conditional mov (cmov)
3408         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3409             cpuflags="-march=$cpu"
3410             disable i686
3411         ;;
3412         # targets that do support nopl and conditional mov (cmov)
3413         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3414             cpuflags="-march=$cpu"
3415             enable i686
3416             enable fast_cmov
3417         ;;
3418         # targets that do support conditional mov but on which it's slow
3419         pentium4|pentium4m|prescott|nocona)
3420             cpuflags="-march=$cpu"
3421             enable i686
3422             disable fast_cmov
3423         ;;
3424     esac
3425
3426 fi
3427
3428 if [ "$cpu" != generic ]; then
3429     add_cflags  $cpuflags
3430     add_asflags $cpuflags
3431 fi
3432
3433 # compiler sanity check
3434 check_exec <<EOF
3435 int main(void){ return 0; }
3436 EOF
3437 if test "$?" != 0; then
3438     echo "$cc is unable to create an executable file."
3439     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3440         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3441         echo "Only do this if you know what cross compiling means."
3442     fi
3443     die "C compiler test failed."
3444 fi
3445
3446 add_cppflags -D_ISOC99_SOURCE
3447 check_cflags -std=c99
3448 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3449 #include <stdlib.h>
3450 EOF
3451 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3452 #include <stdlib.h>
3453 EOF
3454
3455 add_host_cppflags -D_ISOC99_SOURCE
3456 check_host_cflags -std=c99
3457 check_host_cflags -Wall
3458 check_host_cflags -O3
3459
3460 check_64bit(){
3461     arch32=$1
3462     arch64=$2
3463     expr=$3
3464     check_code cc "" "int test[2*($expr) - 1]" &&
3465         subarch=$arch64 || subarch=$arch32
3466 }
3467
3468 case "$arch" in
3469     aarch64|alpha|ia64)
3470         spic=$shared
3471     ;;
3472     mips)
3473         check_64bit mips mips64 '_MIPS_SIM > 1'
3474         spic=$shared
3475     ;;
3476     parisc)
3477         check_64bit parisc parisc64 'sizeof(void *) > 4'
3478         spic=$shared
3479     ;;
3480     ppc)
3481         check_64bit ppc ppc64 'sizeof(void *) > 4'
3482         spic=$shared
3483     ;;
3484     s390)
3485         check_64bit s390 s390x 'sizeof(void *) > 4'
3486         spic=$shared
3487     ;;
3488     sparc)
3489         check_64bit sparc sparc64 'sizeof(void *) > 4'
3490         spic=$shared
3491     ;;
3492     x86)
3493         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3494         if test "$subarch" = "x86_64"; then
3495             spic=$shared
3496         fi
3497     ;;
3498 esac
3499
3500 enable $subarch
3501 enabled spic && enable_weak pic
3502
3503 # OS specific
3504 case $target_os in
3505     aix)
3506         SHFLAGS=-shared
3507         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3508         enabled shared && add_ldflags -Wl,-brtl
3509         ;;
3510     android)
3511         disable symver
3512         enable section_data_rel_ro
3513         SLIB_INSTALL_NAME='$(SLIBNAME)'
3514         SLIB_INSTALL_LINKS=
3515         # soname not set on purpose
3516         SHFLAGS=-shared
3517         ;;
3518     haiku)
3519         prefix_default="/boot/common"
3520         network_extralibs="-lnetwork"
3521         host_libs=
3522         ;;
3523     sunos)
3524         SHFLAGS='-shared -Wl,-h,$$(@F)'
3525         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3526         network_extralibs="-lsocket -lnsl"
3527         # When using suncc to build, the Solaris linker will mark
3528         # an executable with each instruction set encountered by
3529         # the Solaris assembler.  As our libraries contain their own
3530         # guards for processor-specific code, instead suppress
3531         # generation of the HWCAPS ELF section on Solaris x86 only.
3532         enabled_all suncc x86 &&
3533             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3534             add_ldflags -Wl,-M,mapfile
3535         nm_default='nm -P -g'
3536         ;;
3537     netbsd)
3538         disable symver
3539         oss_indev_extralibs="-lossaudio"
3540         oss_outdev_extralibs="-lossaudio"
3541         ;;
3542     openbsd|bitrig)
3543         disable symver
3544         SHFLAGS='-shared'
3545         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3546         SLIB_INSTALL_LINKS=
3547         oss_indev_extralibs="-lossaudio"
3548         oss_outdev_extralibs="-lossaudio"
3549         ;;
3550     dragonfly)
3551         disable symver
3552         ;;
3553     freebsd)
3554         ;;
3555     bsd/os)
3556         add_extralibs -lpoll -lgnugetopt
3557         ;;
3558     darwin)
3559         enabled ppc && add_asflags -force_cpusubtype_ALL
3560         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3561         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3562         add_ldflags -Wl,-dynamic,-search_paths_first
3563         SLIBSUF=".dylib"
3564         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3565         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3566         objformat="macho"
3567         enabled x86_64 && objformat="macho64"
3568         enabled_any pic shared ||
3569             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3570         ;;
3571     mingw32*)
3572         if test $target_os = "mingw32ce"; then
3573             disable network
3574         else
3575             target_os=mingw32
3576         fi
3577         LIBTARGET=i386
3578         if enabled x86_64; then
3579             LIBTARGET="i386:x86-64"
3580         elif enabled arm; then
3581             LIBTARGET=arm-wince
3582         fi
3583         check_ldflags -Wl,--nxcompat
3584         check_ldflags -Wl,--dynamicbase
3585         shlibdir_default="$bindir_default"
3586         SLIBPREF=""
3587         SLIBSUF=".dll"
3588         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3589         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3590         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3591         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3592         SLIB_INSTALL_LINKS=
3593         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3594         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3595         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3596         objformat="win32"
3597         dlltool="${cross_prefix}dlltool"
3598         ranlib=:
3599         enable dos_paths
3600         ;;
3601     win32|win64)
3602         disable symver
3603         if enabled shared; then
3604             # Link to the import library instead of the normal static library
3605             # for shared libs.
3606             LD_LIB='%.lib'
3607             # Cannot build both shared and static libs with MSVC or icl.
3608             disable static
3609         fi
3610         shlibdir_default="$bindir_default"
3611         SLIBPREF=""
3612         SLIBSUF=".dll"
3613         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3614         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3615         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3616         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3617         SLIB_INSTALL_LINKS=
3618         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3619         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3620         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3621         objformat="win32"
3622         ranlib=:
3623         enable dos_paths
3624         ;;
3625     cygwin*)
3626         target_os=cygwin
3627         shlibdir_default="$bindir_default"
3628         SLIBPREF="cyg"
3629         SLIBSUF=".dll"
3630         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3631         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3632         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3633         SLIB_INSTALL_LINKS=
3634         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3635         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3636         objformat="win32"
3637         enable dos_paths
3638         ;;
3639     *-dos|freedos|opendos)
3640         network_extralibs="-lsocket"
3641         objformat="coff"
3642         enable dos_paths
3643         add_cppflags -U__STRICT_ANSI__
3644         ;;
3645     linux)
3646         enable dv1394
3647         enable section_data_rel_ro
3648         ;;
3649     irix*)
3650         target_os=irix
3651         ranlib="echo ignoring ranlib"
3652         ;;
3653     os/2*)
3654         ln_s="cp -f"
3655         objformat="aout"
3656         add_cppflags -D_GNU_SOURCE
3657         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3658         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3659         LIBSUF="_s.a"
3660         SLIBPREF=""
3661         SLIBSUF=".dll"
3662         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3663         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3664         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3665             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3666             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3667             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3668             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3669             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3670         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3671             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3672         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3673         enable dos_paths
3674         ;;
3675     gnu/kfreebsd)
3676         add_cppflags -D_BSD_SOURCE
3677         ;;
3678     gnu)
3679         ;;
3680     qnx)
3681         add_cppflags -D_QNX_SOURCE
3682         network_extralibs="-lsocket"
3683         ;;
3684     symbian)
3685         SLIBSUF=".dll"
3686         enable dos_paths
3687         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3688         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3689         add_ldflags -Wl,--target1-abs,--no-undefined \
3690                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3691                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3692         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3693                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3694                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3695         ;;
3696     osf1)
3697         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3698         ;;
3699     minix)
3700         ;;
3701     plan9)
3702         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3703                      -D_REENTRANT_SOURCE        \
3704                      -D_RESEARCH_SOURCE         \
3705                      -DFD_SETSIZE=96            \
3706                      -DHAVE_SOCK_OPTS
3707         add_compat strtod.o strtod=avpriv_strtod
3708         network_extralibs='-lbsd'
3709         exeobjs=compat/plan9/main.o
3710         cp_f='cp'
3711         ;;
3712     none)
3713         ;;
3714     *)
3715         die "Unknown OS '$target_os'."
3716         ;;
3717 esac
3718
3719 # determine libc flavour
3720
3721 probe_libc(){
3722     pfx=$1
3723     pfx_no_=${pfx%_}
3724     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3725     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3726         eval ${pfx}libc_type=uclibc
3727         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3728     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3729         eval ${pfx}libc_type=glibc
3730         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3731     # MinGW headers can be installed on Cygwin, so check for newlib first.
3732     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3733         eval ${pfx}libc_type=newlib
3734         add_${pfx}cppflags -U__STRICT_ANSI__
3735     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3736     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3737         eval ${pfx}libc_type=mingw64
3738         add_${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 _mingw.h "defined __MINGW_VERSION"  ||
3742          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3743         eval ${pfx}libc_type=mingw32
3744         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3745             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3746             die "ERROR: MinGW32 runtime version must be >= 3.15."
3747         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3748         eval test \$${pfx_no_}cc_type = "gcc" &&
3749             add_${pfx}cppflags -D__printf__=__gnu_printf__
3750     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3751         eval ${pfx}libc_type=msvcrt
3752         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
3753             if [ "$pfx" = host_ ]; then
3754                 add_host_cppflags -Dsnprintf=_snprintf
3755             else
3756                 add_compat strtod.o strtod=avpriv_strtod
3757                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3758                                              _snprintf=avpriv_snprintf  \
3759                                              vsnprintf=avpriv_vsnprintf
3760             fi
3761         fi
3762         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3763         # 0x601 by default unless something else is set by the user.
3764         # This can easily lead to us detecting functions only present
3765         # in such new versions and producing binaries requiring windows 7.0.
3766         # Therefore explicitly set the default to XP unless the user has
3767         # set something else on the command line.
3768         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3769             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3770     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3771         eval ${pfx}libc_type=klibc
3772     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3773         eval ${pfx}libc_type=bionic
3774     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3775         eval ${pfx}libc_type=solaris
3776         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3777     else
3778         eval ${pfx}libc_type=default
3779         add_${pfx}cppflags -D_DEFAULT_SOURCE
3780     fi
3781 }
3782
3783 probe_libc
3784 test -n "$libc_type" && enable libc_$libc_type
3785 probe_libc host_
3786 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3787
3788 case $libc_type in
3789     bionic)
3790         add_compat strtod.o strtod=avpriv_strtod
3791         ;;
3792 esac
3793
3794 # hacks for compiler/libc/os combinations
3795
3796 if enabled_all tms470 libc_glibc; then
3797     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3798     add_cppflags -D__USER_LABEL_PREFIX__=
3799     add_cppflags -D__builtin_memset=memset
3800     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3801     add_cflags   -pds=48    # incompatible redefinition of macro
3802 fi
3803
3804 if enabled_all ccc libc_glibc; then
3805     add_ldflags -Wl,-z,now  # calls to libots crash without this
3806 fi
3807
3808 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3809     add_cppflags '-I\$(SRC_PATH)/compat/float'
3810
3811 esc(){
3812     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3813 }
3814
3815 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3816
3817 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3818
3819 set_default $PATHS_LIST
3820 set_default nm
3821
3822 # we need to build at least one lib type
3823 if ! enabled_any static shared; then
3824     cat <<EOF
3825 At least one library type must be built.
3826 Specify --enable-static to build the static libraries or --enable-shared to
3827 build the shared libraries as well. To only build the shared libraries specify
3828 --disable-static in addition to --enable-shared.
3829 EOF
3830     exit 1;
3831 fi
3832
3833 die_license_disabled() {
3834     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3835 }
3836
3837 die_license_disabled gpl libcdio
3838 die_license_disabled gpl libx264
3839 die_license_disabled gpl libx265
3840 die_license_disabled gpl libxavs
3841 die_license_disabled gpl libxvid
3842 die_license_disabled gpl x11grab
3843
3844 die_license_disabled nonfree libfaac
3845 die_license_disabled nonfree libfdk_aac
3846 die_license_disabled nonfree nvenc
3847 die_license_disabled nonfree openssl
3848
3849 die_license_disabled version3 libopencore_amrnb
3850 die_license_disabled version3 libopencore_amrwb
3851 die_license_disabled version3 libvo_aacenc
3852 die_license_disabled version3 libvo_amrwbenc
3853
3854 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3855
3856 disabled optimizations || check_cflags -fomit-frame-pointer
3857
3858 enable_weak_pic() {
3859     disabled pic && return
3860     enable pic
3861     add_cppflags -DPIC
3862     case "$target_os" in
3863     mingw*|cygwin*)
3864         ;;
3865     *)
3866         add_cflags -fPIC
3867         ;;
3868     esac
3869     add_asflags  -fPIC
3870 }
3871
3872 enabled pic && enable_weak_pic
3873
3874 check_cc <<EOF || die "Symbol mangling check failed."
3875 int ff_extern;
3876 EOF
3877 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3878 extern_prefix=${sym%%ff_extern*}
3879
3880 check_cc <<EOF && enable_weak inline_asm
3881 void foo(void) { __asm__ volatile ("" ::); }
3882 EOF
3883
3884 _restrict=
3885 for restrict_keyword in restrict __restrict__ __restrict; do
3886     check_cc <<EOF && _restrict=$restrict_keyword && break
3887 void foo(char * $restrict_keyword p);
3888 EOF
3889 done
3890
3891 check_cc <<EOF && enable pragma_deprecated
3892 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3893 EOF
3894
3895 check_cc <<EOF && enable attribute_packed
3896 struct { int x; } __attribute__((packed)) x;
3897 EOF
3898
3899 check_cc <<EOF && enable attribute_may_alias
3900 union { int x; } __attribute__((may_alias)) x;
3901 EOF
3902
3903 check_cc <<EOF || die "endian test failed"
3904 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3905 EOF
3906 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3907
3908 check_gas() {
3909     log "check_gas using '$as' as AS"
3910     # :vararg is used on aarch64, arm and ppc altivec
3911     check_as <<EOF || return 1
3912 .macro m n, y:vararg=0
3913 \n: .int \y
3914 .endm
3915 m x
3916 EOF
3917     # .altmacro is only used in arm asm
3918     ! enabled arm || check_as <<EOF || return 1
3919 .altmacro
3920 EOF
3921     enable gnu_as
3922     return 0
3923 }
3924
3925 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
3926     nogas=:
3927     enabled_any arm aarch64 && nogas=die
3928     enabled_all ppc altivec && nogas=warn
3929     as_noop=-v
3930
3931     case $as_type in
3932         arm*) gaspp_as_type=armasm; as_noop=-h ;;
3933         gcc)  gaspp_as_type=gas ;;
3934         *)    gaspp_as_type=$as_type ;;
3935     esac
3936
3937     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
3938
3939     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
3940         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
3941
3942     if ! check_gas ; then
3943         as=${gas:=$as}
3944         check_gas || \
3945             $nogas "GNU assembler not found, install/update gas-preprocessor"
3946     fi
3947
3948     check_as <<EOF && enable as_func
3949 .func test
3950 .endfunc
3951 EOF
3952 fi
3953
3954 check_inline_asm inline_asm_labels '"1:\n"'
3955
3956 if enabled aarch64; then
3957     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3958     # internal assembler in clang 3.3 does not support this instruction
3959     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3960     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3961
3962     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3963
3964 elif enabled alpha; then
3965
3966     check_cflags -mieee
3967
3968 elif enabled arm; then
3969
3970     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3971     enabled thumb && check_cflags -mthumb || check_cflags -marm
3972
3973     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3974         enable vfp_args
3975     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3976         case "${cross_prefix:-$cc}" in
3977             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3978             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3979 __asm__ (".eabi_attribute 28, 1");
3980 int main(void) { return 0; }
3981 EOF
3982         esac
3983         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3984     fi
3985
3986     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3987     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3988     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3989     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3990     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3991     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3992
3993     [ $target_os = linux ] || [ $target_os = android ] ||
3994         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3995             $ARCH_EXT_LIST_ARM
3996
3997     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3998
3999     check_as <<EOF && enable as_dn_directive
4000 ra .dn d0.i16
4001 .unreq ra
4002 EOF
4003
4004     # llvm's integrated assembler supports .object_arch from llvm 3.5
4005     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4006 .object_arch armv4
4007 EOF
4008
4009     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4010
4011 elif enabled mips; then
4012
4013     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4014
4015 elif enabled parisc; then
4016
4017     if enabled gcc; then
4018         case $($cc -dumpversion) in
4019             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4020         esac
4021     fi
4022
4023 elif enabled ppc; then
4024
4025     enable local_aligned_8 local_aligned_16
4026
4027     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4028     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4029     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4030     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4031
4032     # AltiVec flags: The FSF version of GCC differs from the Apple version
4033     if enabled altivec; then
4034         check_cflags -maltivec -mabi=altivec &&
4035         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4036         check_cflags -faltivec
4037
4038         # check if our compiler supports Motorola AltiVec C API
4039         check_cc <<EOF || disable altivec
4040 $inc_altivec_h
4041 int main(void) {
4042     vector signed int v1 = (vector signed int) { 0 };
4043     vector signed int v2 = (vector signed int) { 1 };
4044     v1 = vec_add(v1, v2);
4045     return 0;
4046 }
4047 EOF
4048
4049         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4050     fi
4051
4052     if enabled vsx; then
4053         check_cflags -mvsx &&
4054         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4055     fi
4056
4057     if enabled power8; then
4058         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4059     fi
4060
4061 elif enabled x86; then
4062
4063     check_builtin rdtsc    intrin.h   "__rdtsc()"
4064     check_builtin mm_empty mmintrin.h "_mm_empty()"
4065
4066     enable local_aligned_8 local_aligned_16
4067
4068     # check whether EBP is available on x86
4069     # As 'i' is stored on the stack, this program will crash
4070     # if the base pointer is used to access it because the
4071     # base pointer is cleared in the inline assembly code.
4072     check_exec_crash <<EOF && enable ebp_available
4073 volatile int i=0;
4074 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4075 return i;
4076 EOF
4077
4078     # check whether EBX is available on x86
4079     check_inline_asm ebx_available '""::"b"(0)' &&
4080         check_inline_asm ebx_available '"":::"%ebx"'
4081
4082     # check whether xmm clobbers are supported
4083     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4084
4085     # check whether binutils is new enough to compile SSSE3/MMXEXT
4086     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4087     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4088
4089     if ! disabled_any asm mmx yasm; then
4090         if check_cmd $yasmexe --version; then
4091             enabled x86_64 && yasm_extra="-m amd64"
4092             yasm_debug="-g dwarf2"
4093         elif check_cmd nasm -v; then
4094             yasmexe=nasm
4095             yasm_debug="-g -F dwarf"
4096             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4097         fi
4098
4099         YASMFLAGS="-f $objformat $yasm_extra"
4100         enabled pic               && append YASMFLAGS "-DPIC"
4101         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4102         case "$objformat" in
4103             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4104         esac
4105
4106         check_yasm "movbe ecx, [5]" && enable yasm ||
4107             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4108         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4109         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4110         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4111         check_yasm "CPU amdnop" || disable cpunop
4112     fi
4113
4114     case "$cpu" in
4115         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4116             disable fast_clz
4117         ;;
4118     esac
4119
4120 fi
4121
4122 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4123
4124 check_ldflags -Wl,--as-needed
4125
4126 if check_func dlopen; then
4127     ldl=
4128 elif check_func dlopen -ldl; then
4129     ldl=-ldl
4130 fi
4131
4132 if ! disabled network; then
4133     check_func getaddrinfo $network_extralibs
4134     check_func getservbyport $network_extralibs
4135     check_func inet_aton $network_extralibs
4136
4137     check_type netdb.h "struct addrinfo"
4138     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4139     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4140     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4141     check_type poll.h "struct pollfd"
4142     check_type netinet/sctp.h "struct sctp_event_subscribe"
4143     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4144     check_type netinet/in.h "struct sockaddr_in6"
4145     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4146     check_type "sys/types.h sys/socket.h" socklen_t
4147
4148     # Prefer arpa/inet.h over winsock2
4149     if check_header arpa/inet.h ; then
4150         check_func closesocket
4151     elif check_header winsock2.h ; then
4152         check_func_headers winsock2.h closesocket -lws2 &&
4153             network_extralibs="-lws2" ||
4154         { check_func_headers winsock2.h closesocket -lws2_32 &&
4155             network_extralibs="-lws2_32"; } || disable winsock2_h network
4156         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4157
4158         check_type ws2tcpip.h socklen_t
4159         check_type ws2tcpip.h "struct addrinfo"
4160         check_type ws2tcpip.h "struct group_source_req"
4161         check_type ws2tcpip.h "struct ip_mreq_source"
4162         check_type ws2tcpip.h "struct ipv6_mreq"
4163         check_type winsock2.h "struct pollfd"
4164         check_struct winsock2.h "struct sockaddr" sa_len
4165         check_type ws2tcpip.h "struct sockaddr_in6"
4166         check_type ws2tcpip.h "struct sockaddr_storage"
4167     else
4168         disable network
4169     fi
4170 fi
4171
4172 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4173 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4174 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4175 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4176
4177 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4178 check_func  ${malloc_prefix}memalign            && enable memalign
4179 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4180
4181 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4182     check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4183
4184 check_func  fcntl
4185 check_func  fork
4186 check_func  gethrtime
4187 check_func  getopt
4188 check_func  getrusage
4189 check_func  gettimeofday
4190 check_func  gmtime_r
4191 check_func  isatty
4192 check_func  localtime_r
4193 check_func  mach_absolute_time
4194 check_func  mkstemp
4195 check_func  mmap
4196 check_func  mprotect
4197 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4198 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4199 check_func  sched_getaffinity
4200 check_func  setrlimit
4201 check_func  strerror_r
4202 check_func  sysconf
4203 check_func  sysctl
4204 check_func  usleep
4205
4206 check_func_headers io.h setmode
4207 check_func_headers stdlib.h getenv
4208
4209 check_func_headers windows.h CoTaskMemFree -lole32
4210 check_func_headers windows.h GetProcessAffinityMask
4211 check_func_headers windows.h GetProcessTimes
4212 check_func_headers windows.h GetSystemTimeAsFileTime
4213 check_func_headers windows.h LoadLibrary
4214 check_func_headers windows.h MapViewOfFile
4215 check_func_headers windows.h SetConsoleTextAttribute
4216 check_func_headers windows.h Sleep
4217 check_func_headers windows.h VirtualAlloc
4218 check_struct windows.h "CONDITION_VARIABLE" Ptr
4219
4220 check_header direct.h
4221 check_header dlfcn.h
4222 check_header d3d11.h
4223 check_header dxva.h
4224 check_header dxva2api.h
4225 check_header io.h
4226 check_header mach/mach_time.h
4227 check_header malloc.h
4228 check_header poll.h
4229 check_header sys/mman.h
4230 check_header sys/param.h
4231 check_header sys/resource.h
4232 check_header sys/select.h
4233 check_header sys/time.h
4234 check_header sys/un.h
4235 check_header unistd.h
4236 check_header valgrind/valgrind.h
4237 check_header vdpau/vdpau.h
4238 check_header vdpau/vdpau_x11.h
4239 check_header VideoDecodeAcceleration/VDADecoder.h
4240 check_header windows.h
4241 check_header X11/extensions/XvMClib.h
4242
4243 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4244 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4245 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4246
4247 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4248
4249 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC"
4250 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4251 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0600
4252
4253 if ! disabled w32threads && ! enabled pthreads; then
4254     check_func_headers "windows.h process.h" _beginthreadex &&
4255         enable w32threads || disable w32threads
4256 fi
4257
4258 # check for some common methods of building with pthread support
4259 # do this before the optional library checks as some of them require pthreads
4260 if ! disabled pthreads && ! enabled w32threads; then
4261     enable pthreads
4262     if check_func pthread_join -pthread; then
4263         add_cflags -pthread
4264         add_extralibs -pthread
4265     elif check_func pthread_join -pthreads; then
4266         add_cflags -pthreads
4267         add_extralibs -pthreads
4268     elif check_func pthread_join -lpthreadGC2; then
4269         add_extralibs -lpthreadGC2
4270     elif check_lib pthread.h pthread_join -lpthread; then
4271         :
4272     elif ! check_func pthread_join; then
4273         disable pthreads
4274     fi
4275 fi
4276
4277 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4278 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4279
4280 check_lib math.h sin -lm && LIBM="-lm"
4281 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4282
4283 atan2f_args=2
4284 ldexpf_args=2
4285 powf_args=2
4286
4287 for func in $MATH_FUNCS; do
4288     eval check_mathfunc $func \${${func}_args:-1}
4289 done
4290
4291 # these are off by default, so fail if requested and not available
4292 enabled avisynth          && { check_lib2 "avisynth/avisynth_c.h windows.h" LoadLibrary ||
4293                                check_lib2 "avxsynth/avxsynth_c.h dlfcn.h" dlopen -ldl   ||
4294                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4295 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4296 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4297 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4298 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4299 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4300 enabled libfdk_aac        && require_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4301 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4302 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4303 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4304                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4305                                done || die "ERROR: libgsm not found"; }
4306 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4307 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
4308 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4309 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4310 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4311 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4312 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
4313 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4314                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4315 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4316 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4317 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4318 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4319 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
4320 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4321 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4322 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4323 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4324 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4325 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4326 enabled libvpx            && require_pkg_config "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version && {
4327     enabled libvpx_vp8_decoder && {
4328         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
4329             disable libvpx_vp8_decoder;
4330     }
4331     enabled libvpx_vp8_encoder && {
4332         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
4333             disable libvpx_vp8_encoder;
4334     }
4335     enabled libvpx_vp9_decoder && {
4336         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
4337             disable libvpx_vp9_decoder;
4338     }
4339     enabled libvpx_vp9_encoder && {
4340         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
4341             disable libvpx_vp9_encoder;
4342     }
4343     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
4344         die "libvpx enabled but no supported decoders found"
4345     fi
4346 }
4347 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4348 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4349 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4350                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4351                                die "ERROR: libx264 version must be >= 0.118."; }
4352 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
4353                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
4354                                die "ERROR: libx265 version must be >= 57."; }
4355 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4356 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4357 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4358                                 { ! enabled cross_compile && {
4359                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
4360                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
4361                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
4362                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
4363                                die "ERROR: mmal not found"; }
4364 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4365                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4366                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4367                                die "ERROR: openssl not found"; }
4368
4369 if enabled gnutls; then
4370     { check_lib2 gmp.h mpz_export -lgmp && enable gmp; } ||
4371     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4372 fi
4373
4374 # libdc1394 check
4375 if enabled libdc1394; then
4376     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
4377         enable libdc1394_2; } ||
4378     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4379         enable libdc1394_1; } ||
4380     die "ERROR: No version of libdc1394 found "
4381 fi
4382
4383 if enabled nvenc; then
4384     check_header cuda.h || die "ERROR: cuda.h not found.";
4385     check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found.";
4386     check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 5" ||
4387         die "ERROR: NVENC API version 4 or older is not supported";
4388 fi
4389
4390 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4391     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4392     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4393     enable sdl
4394 fi
4395
4396 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4397 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4398
4399 check_header linux/fb.h
4400 check_header linux/videodev2.h
4401 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4402
4403 check_header sys/videoio.h
4404
4405 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4406 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4407 # w32api 3.12 had it defined wrong
4408 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4409
4410 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4411 { check_header dev/bktr/ioctl_meteor.h &&
4412   check_header dev/bktr/ioctl_bt848.h; } ||
4413 { check_header machine/ioctl_meteor.h &&
4414   check_header machine/ioctl_bt848.h; } ||
4415 { check_header dev/video/meteor/ioctl_meteor.h &&
4416   check_header dev/video/bktr/ioctl_bt848.h; } ||
4417 check_header dev/ic/bt8xx.h
4418
4419 check_header sndio.h
4420 check_header sys/soundcard.h
4421 check_header soundcard.h
4422
4423 enabled_any alsa_indev alsa_outdev &&
4424     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4425
4426 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4427     check_func jack_port_get_latency_range -ljack
4428
4429 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4430
4431 if enabled libcdio; then
4432     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4433     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4434     die "ERROR: No usable libcdio/cdparanoia found"
4435 fi
4436
4437 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4438
4439 if enabled libxcb || enabled x11grab && ! disabled libxcb; then
4440     check_pkg_config xcb-shape xcb/shape.h xcb_shape_rectangles || {
4441         enabled libxcb && die "ERROR: libxcb not found";
4442     } && disable x11grab && enable libxcb
4443
4444     disabled libxcb_shm ||
4445         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
4446             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
4447         } && check_header sys/shm.h && enable libxcb_shm
4448
4449     disabled libxcb_xfixes ||
4450         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
4451             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
4452         } && enable libxcb_xfixes
4453
4454     add_cflags "$xcb_event_cflags $xcb_shm_cflags $xcb_xfixes_cflags"
4455     add_extralibs "$xcb_event_libs $xcb_shm_libs $xcb_xfixes_libs"
4456 fi
4457
4458 if enabled x11grab; then
4459     enabled xlib || die "ERROR: Xlib not found"
4460     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
4461     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
4462 fi
4463
4464 enabled vaapi && enabled xlib &&
4465     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
4466     enable vaapi_x11
4467
4468 enabled vdpau &&
4469     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4470     disable vdpau
4471
4472 enabled vdpau && enabled xlib &&
4473     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4474     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4475     enable vdpau_x11
4476
4477 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4478
4479 # add some useful compiler flags if supported
4480 check_cflags -Wdeclaration-after-statement
4481 check_cflags -Wall
4482 check_cflags -Wdisabled-optimization
4483 check_cflags -Wpointer-arith
4484 check_cflags -Wredundant-decls
4485 check_cflags -Wcast-qual
4486 check_cflags -Wwrite-strings
4487 check_cflags -Wtype-limits
4488 check_cflags -Wundef
4489 check_cflags -Wmissing-prototypes
4490 check_cflags -Wstrict-prototypes
4491 enabled extra_warnings && check_cflags -Winline
4492
4493 check_disable_warning(){
4494     warning_flag=-W${1#-Wno-}
4495     test_cflags $warning_flag && add_cflags $1
4496 }
4497
4498 check_disable_warning -Wno-parentheses
4499 check_disable_warning -Wno-switch
4500 check_disable_warning -Wno-format-zero-length
4501 check_disable_warning -Wno-pointer-sign
4502
4503 # add some linker flags
4504 check_ldflags -Wl,--warn-common
4505 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4506 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
4507 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4508
4509 # add some strip flags
4510 # -wN '..@*' is more selective than -x, but not available everywhere.
4511 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4512
4513 enabled neon_clobber_test &&
4514     check_ldflags -Wl,--wrap,avcodec_open2              \
4515                   -Wl,--wrap,avcodec_decode_audio4      \
4516                   -Wl,--wrap,avcodec_decode_video2      \
4517                   -Wl,--wrap,avcodec_decode_subtitle2   \
4518                   -Wl,--wrap,avcodec_encode_audio2      \
4519                   -Wl,--wrap,avcodec_encode_video2      \
4520                   -Wl,--wrap,avcodec_encode_subtitle    \
4521                   -Wl,--wrap,avresample_convert ||
4522     disable neon_clobber_test
4523
4524 enabled xmm_clobber_test &&
4525     check_ldflags -Wl,--wrap,avcodec_open2              \
4526                   -Wl,--wrap,avcodec_decode_audio4      \
4527                   -Wl,--wrap,avcodec_decode_video2      \
4528                   -Wl,--wrap,avcodec_decode_subtitle2   \
4529                   -Wl,--wrap,avcodec_encode_audio2      \
4530                   -Wl,--wrap,avcodec_encode_video2      \
4531                   -Wl,--wrap,avcodec_encode_subtitle    \
4532                   -Wl,--wrap,avresample_convert         \
4533                   -Wl,--wrap,sws_scale ||
4534     disable xmm_clobber_test
4535
4536 echo "X{};" > $TMPV
4537 if test_ldflags -Wl,--version-script,$TMPV; then
4538     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4539     check_cc <<EOF && enable symver_asm_label
4540 void ff_foo(void) __asm__ ("av_foo@VERSION");
4541 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4542 EOF
4543     check_cc <<EOF && enable symver_gnu_asm
4544 __asm__(".symver ff_foo,av_foo@VERSION");
4545 void ff_foo(void) {}
4546 EOF
4547 fi
4548
4549 if [ -z "$optflags" ]; then
4550     if enabled small; then
4551         optflags=$cflags_size
4552     elif enabled optimizations; then
4553         optflags=$cflags_speed
4554     else
4555         optflags=$cflags_noopt
4556     fi
4557 fi
4558
4559 check_optflags(){
4560     check_cflags "$@"
4561     enabled lto && check_ldflags "$@"
4562 }
4563
4564
4565 if enabled lto; then
4566     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4567     check_cflags  -flto
4568     check_ldflags -flto $cpuflags
4569 fi
4570
4571 check_optflags $optflags
4572 check_optflags -fno-math-errno
4573 check_optflags -fno-signed-zeros
4574
4575 if enabled icc; then
4576     # Just warnings, no remarks
4577     check_cflags -w1
4578     # -wd: Disable following warnings
4579     # 144, 167, 556: -Wno-pointer-sign
4580     # 1292: attribute "foo" ignored
4581     # 1419: external declaration in primary source file
4582     # 10006: ignoring unknown option -fno-signed-zeros
4583     # 10148: ignoring unknown option -Wno-parentheses
4584     # 10156: ignoring option '-W'; no argument required
4585     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4586     # 11030: Warning unknown option --as-needed
4587     # 10156: ignoring option '-export'; no argument required
4588     check_ldflags -wd10156,11030
4589     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4590     enable ebp_available
4591     if enabled x86_32; then
4592         icc_version=$($cc -dumpversion)
4593         test ${icc_version%%.*} -ge 11 &&
4594             check_cflags -falign-stack=maintain-16-byte ||
4595             disable aligned_stack
4596     fi
4597 elif enabled ccc; then
4598     # disable some annoying warnings
4599     add_cflags -msg_disable bitnotint
4600     add_cflags -msg_disable mixfuncvoid
4601     add_cflags -msg_disable nonstandcast
4602     add_cflags -msg_disable unsupieee
4603 elif enabled gcc; then
4604     check_optflags -fno-tree-vectorize
4605     check_cflags -Werror=implicit-function-declaration
4606     check_cflags -Werror=missing-prototypes
4607     check_cflags -Werror=return-type
4608     check_cflags -Werror=declaration-after-statement
4609     check_cflags -Werror=vla
4610     check_cflags -Werror=format-security
4611     check_cflags -fdiagnostics-color=auto
4612     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4613 elif enabled llvm_gcc; then
4614     check_cflags -mllvm -stack-alignment=16
4615 elif enabled clang; then
4616     check_cflags -mllvm -stack-alignment=16
4617     check_cflags -Qunused-arguments
4618     check_cflags -Werror=implicit-function-declaration
4619     check_cflags -Werror=missing-prototypes
4620     check_cflags -Werror=return-type
4621 elif enabled cparser; then
4622     add_cflags -Wno-missing-variable-declarations
4623     add_cflags -Wno-empty-statement
4624 elif enabled armcc; then
4625     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
4626     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
4627     # 2523: use of inline assembly is deprecated
4628     add_cflags -W${armcc_opt},--diag_suppress=2523
4629     add_cflags -W${armcc_opt},--diag_suppress=1207
4630     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4631     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4632     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4633     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4634 elif enabled tms470; then
4635     add_cflags -pds=824 -pds=837
4636     disable inline_asm
4637 elif enabled pathscale; then
4638     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4639 elif enabled_any msvc icl; then
4640     enabled x86_32 && disable aligned_stack
4641     enabled_all x86_32 debug && add_cflags -Oy-
4642     enabled debug && add_ldflags -debug
4643     enable pragma_deprecated
4644     if enabled icl; then
4645         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4646         # (correctly) on icl 13.x.
4647         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4648             add_cflags -Qansi-alias
4649         # icl will pass the inline asm tests but inline asm is currently
4650         # not supported (build will fail)
4651         disable inline_asm
4652     fi
4653     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
4654     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
4655 fi
4656
4657 case $as_type in
4658     clang)
4659         add_asflags -Qunused-arguments
4660     ;;
4661 esac
4662
4663 case $ld_type in
4664     clang)
4665         check_ldflags -Qunused-arguments
4666     ;;
4667 esac
4668
4669 case $target_os in
4670     osf1)
4671         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4672     ;;
4673     plan9)
4674         add_cppflags -Dmain=plan9_main
4675     ;;
4676 esac
4677
4678 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4679
4680 check_deps $CONFIG_LIST       \
4681            $CONFIG_EXTRA      \
4682            $HAVE_LIST         \
4683            $ALL_COMPONENTS    \
4684
4685 enabled_all dxva2 CoTaskMemFree &&
4686     prepend avconv_libs $($ldflags_filter "-lole32") &&
4687     enable dxva2_lib
4688
4689 ! enabled_any memalign posix_memalign aligned_malloc &&
4690     enabled simd_align_16 && enable memalign_hack
4691
4692 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
4693
4694 for thread in $THREADS_LIST; do
4695     if enabled $thread; then
4696         test -n "$thread_type" &&
4697             die "ERROR: Only one thread type must be selected." ||
4698             thread_type="$thread"
4699     fi
4700 done
4701
4702 enabled zlib && add_cppflags -DZLIB_CONST
4703
4704 # conditional library dependencies, in linking order
4705 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
4706 enabled resample_filter && prepend avfilter_deps "avresample"
4707 enabled scale_filter    && prepend avfilter_deps "swscale"
4708
4709 enabled opus_decoder    && prepend avcodec_deps "avresample"
4710
4711 expand_deps(){
4712     lib_deps=${1}_deps
4713     eval "deps=\$$lib_deps"
4714     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
4715     unique $lib_deps
4716 }
4717
4718 map 'expand_deps $v' $LIBRARY_LIST
4719
4720 echo "install prefix            $prefix"
4721 echo "source path               $source_path"
4722 echo "C compiler                $cc"
4723 echo "C library                 $libc_type"
4724 if test "$host_cc" != "$cc"; then
4725     echo "host C compiler           $host_cc"
4726     echo "host C library            $host_libc_type"
4727 fi
4728 echo "ARCH                      $arch ($cpu)"
4729 if test "$build_suffix" != ""; then
4730     echo "build suffix              $build_suffix"
4731 fi
4732 if test "$extra_version" != ""; then
4733     echo "version string suffix     $extra_version"
4734 fi
4735 echo "big-endian                ${bigendian-no}"
4736 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4737 if enabled x86; then
4738     echo "${yasmexe}                      ${yasm-no}"
4739     echo "MMX enabled               ${mmx-no}"
4740     echo "MMXEXT enabled            ${mmxext-no}"
4741     echo "3DNow! enabled            ${amd3dnow-no}"
4742     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4743     echo "SSE enabled               ${sse-no}"
4744     echo "SSSE3 enabled             ${ssse3-no}"
4745     echo "AVX enabled               ${avx-no}"
4746     echo "XOP enabled               ${xop-no}"
4747     echo "FMA3 enabled              ${fma3-no}"
4748     echo "FMA4 enabled              ${fma4-no}"
4749     echo "i686 features enabled     ${i686-no}"
4750     echo "CMOV is fast              ${fast_cmov-no}"
4751     echo "EBX available             ${ebx_available-no}"
4752     echo "EBP available             ${ebp_available-no}"
4753 fi
4754 if enabled aarch64; then
4755     echo "NEON enabled              ${neon-no}"
4756     echo "VFP enabled               ${vfp-no}"
4757 fi
4758 if enabled arm; then
4759     echo "ARMv5TE enabled           ${armv5te-no}"
4760     echo "ARMv6 enabled             ${armv6-no}"
4761     echo "ARMv6T2 enabled           ${armv6t2-no}"
4762     echo "VFP enabled               ${vfp-no}"
4763     echo "NEON enabled              ${neon-no}"
4764 fi
4765 if enabled ppc; then
4766     echo "AltiVec enabled           ${altivec-no}"
4767     echo "VSX enabled               ${vsx-no}"
4768     echo "POWER8 enabled            ${power8-no}"
4769     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4770     echo "dcbzl available           ${dcbzl-no}"
4771 fi
4772 echo "debug symbols             ${debug-no}"
4773 echo "optimize for size         ${small-no}"
4774 echo "optimizations             ${optimizations-no}"
4775 echo "static                    ${static-no}"
4776 echo "shared                    ${shared-no}"
4777 echo "new filter support        ${avfilter-no}"
4778 echo "network support           ${network-no}"
4779 echo "threading support         ${thread_type-no}"
4780 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4781 echo "SDL support               ${sdl-no}"
4782 test -n "$random_seed" &&
4783     echo "random seed               ${random_seed}"
4784 echo
4785
4786 echo "External libraries:"
4787 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4788 echo
4789
4790 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4791     echo "Enabled ${type}s:"
4792     eval list=\$$(toupper $type)_LIST
4793     print_enabled '_*' $list | print_3_columns
4794</