lavc: add Intel libmfx-based MPEG2 decoder.
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89   --enable-rpath           use rpath when linking programs [USE WITH CARE]
90
91 Licensing options:
92   --enable-gpl             allow use of GPL code, the resulting libs
93                            and binaries will be under GPL [no]
94   --enable-version3        upgrade (L)GPL to version 3 [no]
95   --enable-nonfree         allow use of nonfree code, the resulting libs
96                            and binaries will be unredistributable [no]
97
98 Configuration options:
99   --disable-static         do not build static libraries [no]
100   --enable-shared          build shared libraries [no]
101   --enable-small           optimize for size instead of speed
102   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
103   --enable-gray            enable full grayscale support (slower color)
104   --disable-swscale-alpha  disable alpha channel support in swscale
105   --disable-all            disable building components, libraries and programs
106
107 Program options:
108   --disable-programs       do not build command line programs
109   --disable-avconv         disable avconv build
110   --disable-avplay         disable avplay build
111   --disable-avprobe        disable avprobe build
112   --disable-avserver       deprecated, does nothing
113
114 Component options:
115   --disable-doc            do not build documentation
116   --disable-avdevice       disable libavdevice build
117   --disable-avcodec        disable libavcodec build
118   --disable-avformat       disable libavformat build
119   --disable-avutil         disable libavutil build
120   --disable-swscale        disable libswscale build
121   --disable-avfilter       disable video filter support [no]
122   --disable-avresample     disable libavresample build [no]
123   --disable-pthreads       disable pthreads [auto]
124   --disable-w32threads     disable Win32 threads [auto]
125   --disable-network        disable network support [no]
126   --disable-dct            disable DCT code
127   --disable-error-resilience disable error resilience code
128   --disable-lsp            disable LSP code
129   --disable-lzo            disable LZO decoder code
130   --disable-mdct           disable MDCT code
131   --disable-rdft           disable RDFT code
132   --disable-fft            disable FFT code
133   --disable-faan           disable floating point AAN (I)DCT code
134
135 Hardware accelerators:
136   --enable-d3d11va         enable D3D11VA code
137   --enable-dxva2           enable DXVA2 code
138   --enable-vaapi           enable VAAPI code
139   --enable-vda             enable VDA code
140   --enable-vdpau           enable VDPAU code
141
142 Individual component options:
143   --disable-everything     disable all components listed below
144   --disable-encoder=NAME   disable encoder NAME
145   --enable-encoder=NAME    enable encoder NAME
146   --disable-encoders       disable all encoders
147   --disable-decoder=NAME   disable decoder NAME
148   --enable-decoder=NAME    enable decoder NAME
149   --disable-decoders       disable all decoders
150   --disable-hwaccel=NAME   disable hwaccel NAME
151   --enable-hwaccel=NAME    enable hwaccel NAME
152   --disable-hwaccels       disable all hwaccels
153   --disable-muxer=NAME     disable muxer NAME
154   --enable-muxer=NAME      enable muxer NAME
155   --disable-muxers         disable all muxers
156   --disable-demuxer=NAME   disable demuxer NAME
157   --enable-demuxer=NAME    enable demuxer NAME
158   --disable-demuxers       disable all demuxers
159   --enable-parser=NAME     enable parser NAME
160   --disable-parser=NAME    disable parser NAME
161   --disable-parsers        disable all parsers
162   --enable-bsf=NAME        enable bitstream filter NAME
163   --disable-bsf=NAME       disable bitstream filter NAME
164   --disable-bsfs           disable all bitstream filters
165   --enable-protocol=NAME   enable protocol NAME
166   --disable-protocol=NAME  disable protocol NAME
167   --disable-protocols      disable all protocols
168   --enable-indev=NAME      enable input device NAME
169   --disable-indev=NAME     disable input device NAME
170   --disable-indevs         disable input devices
171   --enable-outdev=NAME     enable output device NAME
172   --disable-outdev=NAME    disable output device NAME
173   --disable-outdevs        disable output devices
174   --disable-devices        disable all devices
175   --enable-filter=NAME     enable filter NAME
176   --disable-filter=NAME    disable filter NAME
177   --disable-filters        disable all filters
178
179 External library support:
180   --enable-avisynth        enable reading of AviSynth script files [no]
181   --enable-bzlib           enable bzlib [autodetect]
182   --enable-frei0r          enable frei0r video filtering
183   --enable-gnutls          enable gnutls [no]
184   --enable-libbs2b         enable bs2b DSP library [no]
185   --enable-libcdio         enable audio CD grabbing with libcdio
186   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
187                            and libraw1394 [no]
188   --enable-libdcadec       enable DCA decoding via libdcadec [no]
189   --enable-libfaac         enable AAC encoding via libfaac [no]
190   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
191   --enable-libfreetype     enable libfreetype [no]
192   --enable-libgsm          enable GSM de/encoding via libgsm [no]
193   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
194   --enable-libmfx          enable HW acceleration through libmfx
195   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
196   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
197   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
198   --enable-libopencv       enable video filtering via libopencv [no]
199   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
200   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
201   --enable-libopus         enable Opus de/encoding via libopus [no]
202   --enable-libpulse        enable Pulseaudio input via libpulse [no]
203   --enable-librtmp         enable RTMP[E] support via librtmp [no]
204   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
205   --enable-libsnappy       enable Snappy compression [no]
206   --enable-libspeex        enable Speex de/encoding via libspeex [no]
207   --enable-libtheora       enable Theora encoding via libtheora [no]
208   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
209   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
210   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
211   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
212   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
213   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
214   --enable-libwebp         enable WebP encoding via libwebp [no]
215   --enable-libx264         enable H.264 encoding via x264 [no]
216   --enable-libx265         enable HEVC encoding via x265 [no]
217   --enable-libxavs         enable AVS encoding via xavs [no]
218   --enable-libxcb          enable X11 grabbing using XCB [no]
219   --enable-libxcb-shm      enable X11 grabbing shm communication [auto]
220   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [auto]
221   --enable-libxvid         enable Xvid encoding via xvidcore,
222                            native MPEG-4/Xvid encoder exists [no]
223   --enable-mmal            enable decoding via MMAL [no]
224   --enable-nvenc           enable encoding via NVENC [no]
225   --enable-openssl         enable openssl [no]
226   --enable-x11grab         enable X11 grabbing (legacy) [no]
227   --enable-zlib            enable zlib [autodetect]
228
229 Toolchain options:
230   --arch=ARCH              select architecture [$arch]
231   --cpu=CPU                select the minimum required CPU (affects
232                            instruction selection, may crash on older CPUs)
233   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
234   --enable-cross-compile   assume a cross-compiler is used
235   --sysroot=PATH           root of cross-build tree
236   --sysinclude=PATH        location of cross-build system headers
237   --target-os=OS           compiler targets OS [$target_os]
238   --target-exec=CMD        command to run executables on target
239   --target-path=DIR        path to view of build directory on target
240   --target-samples=DIR     path to samples directory on target
241   --toolchain=NAME         set tool defaults according to NAME
242   --nm=NM                  use nm tool
243   --ar=AR                  use archive tool AR [$ar_default]
244   --as=AS                  use assembler AS [$as_default]
245   --cc=CC                  use C compiler CC [$cc_default]
246   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
247   --ld=LD                  use linker LD
248   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
249   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
250   --host-cc=HOSTCC         use host C compiler HOSTCC
251   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
252   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
253   --host-ld=HOSTLD         use host linker HOSTLD
254   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
255   --host-libs=HLIBS        use libs HLIBS when linking for host
256   --host-os=OS             compiler host OS [$target_os]
257   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
258   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
259   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
260   --extra-libs=ELIBS       add ELIBS [$ELIBS]
261   --extra-version=STRING   version string suffix []
262   --optflags=OPTFLAGS      override optimization-related compiler flags
263   --build-suffix=SUFFIX    library name suffix []
264   --enable-pic             build position-independent code
265   --enable-thumb           compile for Thumb instruction set
266   --enable-lto             use link-time optimization
267   --env="ENV=override"     override the environment variables
268
269 Advanced options (experts only):
270   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
271   --disable-symver         disable symbol versioning
272   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
273   --disable-safe-bitstream-reader
274                            disable buffer boundary checking in bitreaders
275                            (faster, but may crash)
276   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
277   --enable-sram            allow use of on-chip SRAM
278
279 Optimization options (experts only):
280   --disable-asm            disable all assembly optimizations
281   --disable-altivec        disable AltiVec optimizations
282   --disable-vsx            disable VSX optimizations
283   --disable-power8         disable POWER8 optimizations
284   --disable-amd3dnow       disable 3DNow! optimizations
285   --disable-amd3dnowext    disable 3DNow! extended optimizations
286   --disable-mmx            disable MMX optimizations
287   --disable-mmxext         disable MMXEXT optimizations
288   --disable-sse            disable SSE optimizations
289   --disable-sse2           disable SSE2 optimizations
290   --disable-sse3           disable SSE3 optimizations
291   --disable-ssse3          disable SSSE3 optimizations
292   --disable-sse4           disable SSE4 optimizations
293   --disable-sse42          disable SSE4.2 optimizations
294   --disable-avx            disable AVX optimizations
295   --disable-xop            disable XOP optimizations
296   --disable-fma3           disable FMA3 optimizations
297   --disable-fma4           disable FMA4 optimizations
298   --disable-avx2           disable AVX2 optimizations
299   --disable-armv5te        disable armv5te optimizations
300   --disable-armv6          disable armv6 optimizations
301   --disable-armv6t2        disable armv6t2 optimizations
302   --disable-vfp            disable VFP optimizations
303   --disable-neon           disable NEON optimizations
304   --disable-inline-asm     disable use of inline assembly
305   --disable-yasm           disable use of nasm/yasm assembly
306
307 Developer options (useful when working on Libav itself):
308   --disable-debug          disable debugging symbols
309   --enable-debug=LEVEL     set the debug level [$debuglevel]
310   --disable-optimizations  disable compiler optimizations
311   --enable-extra-warnings  enable more compiler warnings
312   --samples=PATH           location of test samples for FATE, if not set use
313                            \$LIBAV_SAMPLES at make invocation time.
314   --enable-neon-clobber-test check NEON registers for clobbering (should be
315                            used only for debugging purposes)
316   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
317                            should be used only for debugging purposes)
318   --enable-random          randomly enable/disable components
319   --disable-random
320   --enable-random=LIST     randomly enable/disable specific components or
321   --disable-random=LIST    component groups. LIST is a comma-separated list
322                            of NAME[:PROB] entries where NAME is a component
323                            (group) and PROB the probability associated with
324                            NAME (default 0.5).
325   --random-seed=VALUE      seed value for --enable/disable-random
326   --disable-valgrind-backtrace do not print a backtrace under Valgrind
327                            (only applies to --disable-optimizations builds)
328
329 NOTE: Object files are built at the place where configure is launched.
330 EOF
331   exit 0
332 }
333
334 quotes='""'
335
336 log(){
337     echo "$@" >> $logfile
338 }
339
340 log_file(){
341     log BEGIN $1
342     pr -n -t $1 >> $logfile
343     log END $1
344 }
345
346 echolog(){
347     log "$@"
348     echo "$@"
349 }
350
351 warn(){
352     log "WARNING: $*"
353     WARNINGS="${WARNINGS}WARNING: $*\n"
354 }
355
356 die(){
357     echolog "$@"
358     cat <<EOF
359
360 If you think configure made a mistake, make sure you are using the latest
361 version from Git.  If the latest version fails, report the problem to the
362 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
363 EOF
364     if disabled logging; then
365         cat <<EOF
366 Rerun configure with logging enabled (do not use --disable-logging), and
367 include the log this produces with your report.
368 EOF
369     else
370         cat <<EOF
371 Include the log file "$logfile" produced by configure as this will help
372 solving the problem.
373 EOF
374     fi
375     exit 1
376 }
377
378 # Avoid locale weirdness, besides we really just want to translate ASCII.
379 toupper(){
380     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
381 }
382
383 tolower(){
384     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
385 }
386
387 c_escape(){
388     echo "$*" | sed 's/["\\]/\\\0/g'
389 }
390
391 sh_quote(){
392     v=$(echo "$1" | sed "s/'/'\\\\''/g")
393     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
394     echo "$v"
395 }
396
397 cleanws(){
398     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
399 }
400
401 filter(){
402     pat=$1
403     shift
404     for v; do
405         eval "case $v in $pat) echo $v ;; esac"
406     done
407 }
408
409 filter_out(){
410     pat=$1
411     shift
412     for v; do
413         eval "case $v in $pat) ;; *) echo $v ;; esac"
414     done
415 }
416
417 map(){
418     m=$1
419     shift
420     for v; do eval $m; done
421 }
422
423 add_suffix(){
424     suffix=$1
425     shift
426     for v; do echo ${v}${suffix}; done
427 }
428
429 set_all(){
430     value=$1
431     shift
432     for var in $*; do
433         eval $var=$value
434     done
435 }
436
437 set_weak(){
438     value=$1
439     shift
440     for var; do
441         eval : \${$var:=$value}
442     done
443 }
444
445 sanitize_var_name(){
446     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
447 }
448
449 set_safe(){
450     var=$1
451     shift
452     eval $(sanitize_var_name "$var")='$*'
453 }
454
455 get_safe(){
456     eval echo \$$(sanitize_var_name "$1")
457 }
458
459 pushvar(){
460     for pvar in $*; do
461         eval level=\${${pvar}_level:=0}
462         eval ${pvar}_${level}="\$$pvar"
463         eval ${pvar}_level=$(($level+1))
464     done
465 }
466
467 popvar(){
468     for pvar in $*; do
469         eval level=\${${pvar}_level:-0}
470         test $level = 0 && continue
471         eval level=$(($level-1))
472         eval $pvar="\${${pvar}_${level}}"
473         eval ${pvar}_level=$level
474         eval unset ${pvar}_${level}
475     done
476 }
477
478 enable(){
479     set_all yes $*
480 }
481
482 disable(){
483     set_all no $*
484 }
485
486 enable_weak(){
487     set_weak yes $*
488 }
489
490 disable_weak(){
491     set_weak no $*
492 }
493
494 enable_safe(){
495     for var; do
496         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
497     done
498 }
499
500 disable_safe(){
501     for var; do
502         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
503     done
504 }
505
506 do_enable_deep(){
507     for var; do
508         enabled $var && continue
509         eval sel="\$${var}_select"
510         eval sgs="\$${var}_suggest"
511         pushvar var sgs
512         enable_deep $sel
513         popvar sgs
514         enable_deep_weak $sgs
515         popvar var
516     done
517 }
518
519 enable_deep(){
520     do_enable_deep $*
521     enable $*
522 }
523
524 enable_deep_weak(){
525     for var; do
526         disabled $var && continue
527         pushvar var
528         do_enable_deep $var
529         popvar var
530         enable_weak $var
531     done
532 }
533
534 enabled(){
535     test "${1#!}" = "$1" && op== || op=!=
536     eval test "x\$${1#!}" $op "xyes"
537 }
538
539 disabled(){
540     test "${1#!}" = "$1" && op== || op=!=
541     eval test "x\$${1#!}" $op "xno"
542 }
543
544 enabled_all(){
545     for opt; do
546         enabled $opt || return 1
547     done
548 }
549
550 disabled_all(){
551     for opt; do
552         disabled $opt || return 1
553     done
554 }
555
556 enabled_any(){
557     for opt; do
558         enabled $opt && return 0
559     done
560 }
561
562 disabled_any(){
563     for opt; do
564         disabled $opt && return 0
565     done
566     return 1
567 }
568
569 set_default(){
570     for opt; do
571         eval : \${$opt:=\$${opt}_default}
572     done
573 }
574
575 is_in(){
576     value=$1
577     shift
578     for var in $*; do
579         [ $var = $value ] && return 0
580     done
581     return 1
582 }
583
584 do_check_deps(){
585     for cfg; do
586         cfg="${cfg#!}"
587         enabled ${cfg}_checking && die "Circular dependency for $cfg."
588         disabled ${cfg}_checking && continue
589         enable ${cfg}_checking
590         append allopts $cfg
591
592         eval dep_all="\$${cfg}_deps"
593         eval dep_any="\$${cfg}_deps_any"
594         eval dep_sel="\$${cfg}_select"
595         eval dep_sgs="\$${cfg}_suggest"
596         eval dep_ifa="\$${cfg}_if"
597         eval dep_ifn="\$${cfg}_if_any"
598
599         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
600         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
601         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
602
603         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
604         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
605         enabled_all  $dep_all || disable $cfg
606         enabled_any  $dep_any || disable $cfg
607         disabled_any $dep_sel && disable $cfg
608
609         if enabled $cfg; then
610             enable_deep $dep_sel
611             enable_deep_weak $dep_sgs
612         fi
613
614         disable ${cfg}_checking
615     done
616 }
617
618 check_deps(){
619     unset allopts
620
621     do_check_deps "$@"
622
623     for cfg in $allopts; do
624         enabled $cfg || continue
625         eval dep_extralibs="\$${cfg}_extralibs"
626         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
627     done
628 }
629
630 print_config(){
631     pfx=$1
632     files=$2
633     shift 2
634     map 'eval echo "$v \${$v:-no}"' "$@" |
635     awk "BEGIN { split(\"$files\", files) }
636         {
637             c = \"$pfx\" toupper(\$1);
638             v = \$2;
639             sub(/yes/, 1, v);
640             sub(/no/,  0, v);
641             for (f in files) {
642                 file = files[f];
643                 if (file ~ /\\.h\$/) {
644                     printf(\"#define %s %d\\n\", c, v) >>file;
645                 } else if (file ~ /\\.asm\$/) {
646                     printf(\"%%define %s %d\\n\", c, v) >>file;
647                 } else if (file ~ /\\.mak\$/) {
648                     n = -v ? \"\" : \"!\";
649                     printf(\"%s%s=yes\\n\", n, c) >>file;
650                 }
651             }
652         }"
653 }
654
655 print_enabled(){
656     suf=$1
657     shift
658     for v; do
659         enabled $v && printf "%s\n" ${v%$suf};
660     done
661 }
662
663 append(){
664     var=$1
665     shift
666     eval "$var=\"\$$var $*\""
667 }
668
669 prepend(){
670     var=$1
671     shift
672     eval "$var=\"$* \$$var\""
673 }
674
675 unique(){
676     var=$1
677     uniq_list=""
678     for tok in $(eval echo \$$var); do
679         uniq_list="$(filter_out $tok $uniq_list) $tok"
680     done
681     eval "$var=\"${uniq_list}\""
682 }
683
684 add_cppflags(){
685     append CPPFLAGS "$@"
686 }
687
688 add_cflags(){
689     append CFLAGS $($cflags_filter "$@")
690 }
691
692 add_asflags(){
693     append ASFLAGS $($asflags_filter "$@")
694 }
695
696 add_ldflags(){
697     append LDFLAGS $($ldflags_filter "$@")
698 }
699
700 add_ldexeflags(){
701     append LDEXEFLAGS $($ldflags_filter "$@")
702 }
703
704 add_stripflags(){
705     append STRIPFLAGS "$@"
706 }
707
708 add_extralibs(){
709     prepend extralibs $($ldflags_filter "$@")
710 }
711
712 add_host_cppflags(){
713     append host_cppflags "$@"
714 }
715
716 add_host_cflags(){
717     append host_cflags $($host_cflags_filter "$@")
718 }
719
720 add_host_ldflags(){
721     append host_ldflags $($host_ldflags_filter "$@")
722 }
723
724 add_compat(){
725     append compat_objs $1
726     shift
727     map 'add_cppflags -D$v' "$@"
728 }
729
730 check_cmd(){
731     log "$@"
732     "$@" >> $logfile 2>&1
733 }
734
735 cc_o(){
736     eval printf '%s\\n' $CC_O
737 }
738
739 cc_e(){
740     eval printf '%s\\n' $CC_E
741 }
742
743 check_cc(){
744     log check_cc "$@"
745     cat > $TMPC
746     log_file $TMPC
747     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
748 }
749
750 check_cpp(){
751     log check_cpp "$@"
752     cat > $TMPC
753     log_file $TMPC
754     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
755 }
756
757 as_o(){
758     eval printf '%s\\n' $AS_O
759 }
760
761 check_as(){
762     log check_as "$@"
763     cat > $TMPS
764     log_file $TMPS
765     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
766 }
767
768 check_inline_asm(){
769     log check_inline_asm "$@"
770     name="$1"
771     code="$2"
772     shift 2
773     disable $name
774     check_cc "$@" <<EOF && enable $name
775 void foo(void){ __asm__ volatile($code); }
776 EOF
777 }
778
779 check_insn(){
780     log check_insn "$@"
781     check_inline_asm ${1}_inline "\"$2\""
782     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
783 }
784
785 check_yasm(){
786     log check_yasm "$@"
787     echo "$1" > $TMPS
788     log_file $TMPS
789     shift 1
790     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
791 }
792
793 ld_o(){
794     eval printf '%s\\n' $LD_O
795 }
796
797 check_ld(){
798     log check_ld "$@"
799     flags=$(filter_out '-l*' "$@")
800     libs=$(filter '-l*' "$@")
801     check_cc $($cflags_filter $flags) || return
802     flags=$($ldflags_filter $flags)
803     libs=$($ldflags_filter $libs)
804     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
805 }
806
807 print_include(){
808     hdr=$1
809     test "${hdr%.h}" = "${hdr}" &&
810         echo "#include $hdr"    ||
811         echo "#include <$hdr>"
812 }
813
814 check_code(){
815     log check_code "$@"
816     check=$1
817     headers=$2
818     code=$3
819     shift 3
820     {
821         for hdr in $headers; do
822             print_include $hdr
823         done
824         echo "int main(void) { $code; return 0; }"
825     } | check_$check "$@"
826 }
827
828 check_cppflags(){
829     log check_cppflags "$@"
830     check_cc "$@" <<EOF && append CPPFLAGS "$@"
831 int x;
832 EOF
833 }
834
835 test_cflags(){
836     log test_cflags "$@"
837     set -- $($cflags_filter "$@")
838     check_cc "$@" <<EOF
839 int x;
840 EOF
841 }
842
843 check_cflags(){
844     log check_cflags "$@"
845     test_cflags "$@" && add_cflags "$@"
846 }
847
848 test_ldflags(){
849     log test_ldflags "$@"
850     check_ld "$@" <<EOF
851 int main(void){ return 0; }
852 EOF
853 }
854
855 check_ldflags(){
856     log check_ldflags "$@"
857     test_ldflags "$@" && add_ldflags "$@"
858 }
859
860 test_stripflags(){
861     log test_stripflags "$@"
862     # call check_cc to get a fresh TMPO
863     check_cc <<EOF
864 int main(void) { return 0; }
865 EOF
866     check_cmd $strip $STRIPFLAGS "$@" $TMPO
867 }
868
869 check_stripflags(){
870     log check_stripflags "$@"
871     test_stripflags "$@" && add_stripflags "$@"
872 }
873
874 check_header(){
875     log check_header "$@"
876     header=$1
877     shift
878     disable_safe $header
879     check_cpp "$@" <<EOF && enable_safe $header
880 #include <$header>
881 int x;
882 EOF
883 }
884
885 check_func(){
886     log check_func "$@"
887     func=$1
888     shift
889     disable $func
890     check_ld "$@" <<EOF && enable $func
891 extern int $func();
892 int main(void){ $func(); }
893 EOF
894 }
895
896 check_mathfunc(){
897     log check_mathfunc "$@"
898     func=$1
899     narg=$2
900     shift 2
901     test $narg = 2 && args="f, g" || args="f"
902     disable $func
903     check_ld "$@" <<EOF && enable $func
904 #include <math.h>
905 float foo(float f, float g) { return $func($args); }
906 int main(void){ return 0; }
907 EOF
908 }
909
910 check_func_headers(){
911     log check_func_headers "$@"
912     headers=$1
913     funcs=$2
914     shift 2
915     {
916         for hdr in $headers; do
917             print_include $hdr
918         done
919         for func in $funcs; do
920             echo "long check_$func(void) { return (long) $func; }"
921         done
922         echo "int main(void) { return 0; }"
923     } | check_ld "$@" && enable $funcs && enable_safe $headers
924 }
925
926 check_cpp_condition(){
927     log check_cpp_condition "$@"
928     header=$1
929     condition=$2
930     shift 2
931     check_cpp "$@" <<EOF
932 #include <$header>
933 #if !($condition)
934 #error "unsatisfied condition: $condition"
935 #endif
936 EOF
937 }
938
939 check_lib(){
940     log check_lib "$@"
941     header="$1"
942     func="$2"
943     shift 2
944     check_header $header && check_func $func "$@" && add_extralibs "$@"
945 }
946
947 check_lib2(){
948     log check_lib2 "$@"
949     headers="$1"
950     funcs="$2"
951     shift 2
952     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
953 }
954
955 check_pkg_config(){
956     log check_pkg_config "$@"
957     pkg="$1"
958     headers="$2"
959     funcs="$3"
960     shift 3
961     check_cmd $pkg_config --exists --print-errors $pkg || return
962     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
963     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
964     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
965         set_safe "${pkg}_cflags" $pkg_cflags   &&
966         set_safe "${pkg}_libs"   $pkg_libs
967 }
968
969 check_exec(){
970     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
971 }
972
973 check_exec_crash(){
974     code=$(cat)
975
976     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
977     # are safe but may not be available everywhere.  Thus we use
978     # raise(SIGTERM) instead.  The check is run in a subshell so we
979     # can redirect the "Terminated" message from the shell.  SIGBUS
980     # is not defined by standard C so it is used conditionally.
981
982     (check_exec "$@") >> $logfile 2>&1 <<EOF
983 #include <signal.h>
984 static void sighandler(int sig){
985     raise(SIGTERM);
986 }
987 int foo(void){
988     $code
989 }
990 int (*func_ptr)(void) = foo;
991 int main(void){
992     signal(SIGILL, sighandler);
993     signal(SIGFPE, sighandler);
994     signal(SIGSEGV, sighandler);
995 #ifdef SIGBUS
996     signal(SIGBUS, sighandler);
997 #endif
998     return func_ptr();
999 }
1000 EOF
1001 }
1002
1003 check_type(){
1004     log check_type "$@"
1005     headers=$1
1006     type=$2
1007     shift 2
1008     disable_safe "$type"
1009     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1010 }
1011
1012 check_struct(){
1013     log check_struct "$@"
1014     headers=$1
1015     struct=$2
1016     member=$3
1017     shift 3
1018     disable_safe "${struct}_${member}"
1019     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1020         enable_safe "${struct}_${member}"
1021 }
1022
1023 check_builtin(){
1024     log check_builtin "$@"
1025     name=$1
1026     headers=$2
1027     builtin=$3
1028     shift 3
1029     disable "$name"
1030     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1031 }
1032
1033 check_compile_assert(){
1034     log check_compile_assert "$@"
1035     name=$1
1036     headers=$2
1037     condition=$3
1038     shift 3
1039     disable "$name"
1040     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1041 }
1042
1043 require(){
1044     name="$1"
1045     header="$2"
1046     func="$3"
1047     shift 3
1048     check_lib $header $func "$@" || die "ERROR: $name not found"
1049 }
1050
1051 require2(){
1052     name="$1"
1053     headers="$2"
1054     func="$3"
1055     shift 3
1056     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1057 }
1058
1059 require_pkg_config(){
1060     pkg="$1"
1061     check_pkg_config "$@" || die "ERROR: $pkg not found"
1062     add_cflags    $(get_safe "${pkg}_cflags")
1063     add_extralibs $(get_safe "${pkg}_libs")
1064 }
1065
1066 hostcc_e(){
1067     eval printf '%s\\n' $HOSTCC_E
1068 }
1069
1070 hostcc_o(){
1071     eval printf '%s\\n' $HOSTCC_O
1072 }
1073
1074 check_host_cc(){
1075     log check_host_cc "$@"
1076     cat > $TMPC
1077     log_file $TMPC
1078     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1079 }
1080
1081 check_host_cpp(){
1082     log check_host_cpp "$@"
1083     cat > $TMPC
1084     log_file $TMPC
1085     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1086 }
1087
1088 check_host_cppflags(){
1089     log check_host_cppflags "$@"
1090     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1091 int x;
1092 EOF
1093 }
1094
1095 check_host_cflags(){
1096     log check_host_cflags "$@"
1097     set -- $($host_cflags_filter "$@")
1098     check_host_cc "$@" <<EOF && append host_cflags "$@"
1099 int x;
1100 EOF
1101 }
1102
1103 check_host_cpp_condition(){
1104     log check_host_cpp_condition "$@"
1105     header=$1
1106     condition=$2
1107     shift 2
1108     check_host_cpp "$@" <<EOF
1109 #include <$header>
1110 #if !($condition)
1111 #error "unsatisfied condition: $condition"
1112 #endif
1113 EOF
1114 }
1115
1116 apply(){
1117     file=$1
1118     shift
1119     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1120 }
1121
1122 cp_if_changed(){
1123     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1124     mkdir -p "$(dirname $2)"
1125     $cp_f "$1" "$2"
1126 }
1127
1128 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1129 # system-dependent things.
1130
1131 COMPONENT_LIST="
1132     bsfs
1133     decoders
1134     demuxers
1135     encoders
1136     filters
1137     hwaccels
1138     indevs
1139     muxers
1140     outdevs
1141     parsers
1142     protocols
1143 "
1144
1145 EXAMPLE_LIST="
1146     avcodec_example
1147     filter_audio_example
1148     metadata_example
1149     output_example
1150     qsvdec_example
1151     transcode_aac_example
1152 "
1153
1154 EXTERNAL_LIBRARY_LIST="
1155     avisynth
1156     bzlib
1157     frei0r
1158     gnutls
1159     libbs2b
1160     libcdio
1161     libdc1394
1162     libdcadec
1163     libfaac
1164     libfdk_aac
1165     libfontconfig
1166     libfreetype
1167     libgsm
1168     libilbc
1169     libmfx
1170     libmp3lame
1171     libopencore_amrnb
1172     libopencore_amrwb
1173     libopencv
1174     libopenh264
1175     libopenjpeg
1176     libopus
1177     libpulse
1178     librtmp
1179     libschroedinger
1180     libsnappy
1181     libspeex
1182     libtheora
1183     libtwolame
1184     libvo_aacenc
1185     libvo_amrwbenc
1186     libvorbis
1187     libvpx
1188     libwavpack
1189     libwebp
1190     libx264
1191     libx265
1192     libxavs
1193     libxcb
1194     libxcb_shm
1195     libxcb_xfixes
1196     libxvid
1197     mmal
1198     nvenc
1199     openssl
1200     x11grab
1201     zlib
1202 "
1203
1204 FEATURE_LIST="
1205     gray
1206     hardcoded_tables
1207     runtime_cpudetect
1208     safe_bitstream_reader
1209     shared
1210     small
1211     sram
1212     static
1213     swscale_alpha
1214 "
1215
1216 HWACCEL_LIST="
1217     d3d11va
1218     dxva2
1219     vaapi
1220     vda
1221     vdpau
1222 "
1223
1224 LIBRARY_LIST="
1225     avcodec
1226     avdevice
1227     avfilter
1228     avformat
1229     avresample
1230     avutil
1231     swscale
1232 "
1233
1234 LICENSE_LIST="
1235     gpl
1236     nonfree
1237     version3
1238 "
1239
1240 PROGRAM_LIST="
1241     avconv
1242     avplay
1243     avprobe
1244 "
1245
1246 SUBSYSTEM_LIST="
1247     dct
1248     doc
1249     error_resilience
1250     faan
1251     fft
1252     lsp
1253     lzo
1254     mdct
1255     network
1256     rdft
1257 "
1258
1259 CONFIG_LIST="
1260     $COMPONENT_LIST
1261     $EXAMPLE_LIST
1262     $EXTERNAL_LIBRARY_LIST
1263     $FEATURE_LIST
1264     $HWACCEL_LIST
1265     $LICENSE_LIST
1266     $LIBRARY_LIST
1267     $PROGRAM_LIST
1268     $SUBSYSTEM_LIST
1269     memalign_hack
1270     neon_clobber_test
1271     pic
1272     pod2man
1273     texi2html
1274     thumb
1275     valgrind_backtrace
1276     xmm_clobber_test
1277 "
1278
1279 THREADS_LIST="
1280     pthreads
1281     w32threads
1282 "
1283
1284 ATOMICS_LIST="
1285     atomics_gcc
1286     atomics_suncc
1287     atomics_win32
1288 "
1289
1290 ARCH_LIST="
1291     aarch64
1292     alpha
1293     arm
1294     avr32
1295     avr32_ap
1296     avr32_uc
1297     bfin
1298     ia64
1299     m68k
1300     mips
1301     mips64
1302     parisc
1303     ppc
1304     ppc64
1305     s390
1306     sh4
1307     sparc
1308     sparc64
1309     tilegx
1310     tilepro
1311     tomi
1312     x86
1313     x86_32
1314     x86_64
1315 "
1316
1317 ARCH_EXT_LIST_ARM="
1318     armv5te
1319     armv6
1320     armv6t2
1321     armv8
1322     neon
1323     vfp
1324     vfpv3
1325 "
1326
1327 ARCH_EXT_LIST_X86_SIMD="
1328     amd3dnow
1329     amd3dnowext
1330     avx
1331     avx2
1332     fma3
1333     fma4
1334     mmx
1335     mmxext
1336     sse
1337     sse2
1338     sse3
1339     sse4
1340     sse42
1341     ssse3
1342     xop
1343 "
1344
1345 ARCH_EXT_LIST_PPC="
1346     altivec
1347     dcbzl
1348     ldbrx
1349     power8
1350     ppc4xx
1351     vsx
1352 "
1353
1354 ARCH_EXT_LIST_X86="
1355     $ARCH_EXT_LIST_X86_SIMD
1356     cpunop
1357     i686
1358 "
1359
1360 ARCH_EXT_LIST="
1361     $ARCH_EXT_LIST_ARM
1362     $ARCH_EXT_LIST_PPC
1363     $ARCH_EXT_LIST_X86
1364     loongson
1365     vis
1366 "
1367
1368 ARCH_FEATURES="
1369     aligned_stack
1370     fast_64bit
1371     fast_clz
1372     fast_cmov
1373     local_aligned_8
1374     local_aligned_16
1375     simd_align_16
1376 "
1377
1378 BUILTIN_LIST="
1379     atomic_cas_ptr
1380     machine_rw_barrier
1381     MemoryBarrier
1382     mm_empty
1383     rdtsc
1384     sync_val_compare_and_swap
1385 "
1386 HAVE_LIST_CMDLINE="
1387     inline_asm
1388     symver
1389     yasm
1390 "
1391
1392 HAVE_LIST_PUB="
1393     bigendian
1394     fast_unaligned
1395 "
1396
1397 HEADERS_LIST="
1398     alsa_asoundlib_h
1399     altivec_h
1400     arpa_inet_h
1401     cdio_paranoia_h
1402     cdio_paranoia_paranoia_h
1403     dev_bktr_ioctl_bt848_h
1404     dev_bktr_ioctl_meteor_h
1405     dev_ic_bt8xx_h
1406     dev_video_bktr_ioctl_bt848_h
1407     dev_video_meteor_ioctl_meteor_h
1408     direct_h
1409     dlfcn_h
1410     d3d11_h
1411     dxva_h
1412     gsm_h
1413     io_h
1414     mach_mach_time_h
1415     machine_ioctl_bt848_h
1416     machine_ioctl_meteor_h
1417     malloc_h
1418     poll_h
1419     sndio_h
1420     soundcard_h
1421     sys_mman_h
1422     sys_param_h
1423     sys_resource_h
1424     sys_select_h
1425     sys_soundcard_h
1426     sys_time_h
1427     sys_un_h
1428     sys_videoio_h
1429     unistd_h
1430     valgrind_valgrind_h
1431     windows_h
1432     winsock2_h
1433 "
1434
1435 INTRINSICS_LIST="
1436     intrinsics_neon
1437 "
1438
1439 MATH_FUNCS="
1440     atanf
1441     atan2f
1442     cbrtf
1443     cosf
1444     exp2
1445     exp2f
1446     expf
1447     isinf
1448     isnan
1449     ldexpf
1450     llrint
1451     llrintf
1452     log2
1453     log2f
1454     log10f
1455     lrint
1456     lrintf
1457     powf
1458     rint
1459     round
1460     roundf
1461     sinf
1462     trunc
1463     truncf
1464 "
1465
1466 SYSTEM_FUNCS="
1467     aligned_malloc
1468     clock_gettime
1469     closesocket
1470     CommandLineToArgvW
1471     CoTaskMemFree
1472     CryptGenRandom
1473     dlopen
1474     fcntl
1475     flt_lim
1476     fork
1477     getaddrinfo
1478     gethrtime
1479     getopt
1480     GetProcessAffinityMask
1481     GetProcessMemoryInfo
1482     GetProcessTimes
1483     getrusage
1484     getservbyport
1485     GetSystemTimeAsFileTime
1486     gettimeofday
1487     gmtime_r
1488     inet_aton
1489     isatty
1490     jack_port_get_latency_range
1491     LoadLibrary
1492     localtime_r
1493     mach_absolute_time
1494     MapViewOfFile
1495     memalign
1496     mkstemp
1497     mmap
1498     mprotect
1499     nanosleep
1500     posix_memalign
1501     sched_getaffinity
1502     SetConsoleTextAttribute
1503     setmode
1504     setrlimit
1505     Sleep
1506     strerror_r
1507     sysconf
1508     sysctl
1509     usleep
1510     VirtualAlloc
1511 "
1512
1513 TOOLCHAIN_FEATURES="
1514     as_dn_directive
1515     as_func
1516     as_object_arch
1517     asm_mod_q
1518     attribute_may_alias
1519     attribute_packed
1520     ebp_available
1521     ebx_available
1522     gnu_as
1523     ibm_asm
1524     inline_asm_labels
1525     pragma_deprecated
1526     symver_asm_label
1527     symver_gnu_asm
1528     vfp_args
1529     xform_asm
1530     xmm_clobbers
1531 "
1532
1533 TYPES_LIST="
1534     CONDITION_VARIABLE_Ptr
1535     socklen_t
1536     struct_addrinfo
1537     struct_group_source_req
1538     struct_ip_mreq_source
1539     struct_ipv6_mreq
1540     struct_pollfd
1541     struct_rusage_ru_maxrss
1542     struct_sockaddr_in6
1543     struct_sockaddr_sa_len
1544     struct_sockaddr_storage
1545     struct_v4l2_frmivalenum_discrete
1546 "
1547
1548 HAVE_LIST="
1549     $ARCH_EXT_LIST
1550     $(add_suffix _external $ARCH_EXT_LIST)
1551     $(add_suffix _inline   $ARCH_EXT_LIST)
1552     $ARCH_FEATURES
1553     $ATOMICS_LIST
1554     $BUILTIN_LIST
1555     $HAVE_LIST_CMDLINE
1556     $HAVE_LIST_PUB
1557     $HEADERS_LIST
1558     $INTRINSICS_LIST
1559     $MATH_FUNCS
1560     $SYSTEM_FUNCS
1561     $THREADS_LIST
1562     $TOOLCHAIN_FEATURES
1563     $TYPES_LIST
1564     atomics_native
1565     dos_paths
1566     dxva2_lib
1567     libc_msvcrt
1568     libdc1394_1
1569     libdc1394_2
1570     sdl
1571     section_data_rel_ro
1572     threads
1573     vaapi_x11
1574     vdpau_x11
1575     xlib
1576 "
1577
1578 # options emitted with CONFIG_ prefix but not available on the command line
1579 CONFIG_EXTRA="
1580     aandcttables
1581     ac3dsp
1582     audio_frame_queue
1583     audiodsp
1584     blockdsp
1585     bswapdsp
1586     cabac
1587     dvprofile
1588     faandct
1589     faanidct
1590     fdctdsp
1591     flacdsp
1592     fmtconvert
1593     g722dsp
1594     gcrypt
1595     gmp
1596     golomb
1597     gplv3
1598     h263dsp
1599     h264chroma
1600     h264dsp
1601     h264pred
1602     h264qpel
1603     hpeldsp
1604     huffman
1605     huffyuvdsp
1606     huffyuvencdsp
1607     idctdsp
1608     iirfilter
1609     imdct15
1610     intrax8
1611     ividsp
1612     jpegtables
1613     libx262
1614     lgplv3
1615     lpc
1616     me_cmp
1617     mpeg_er
1618     mpegaudio
1619     mpegaudiodsp
1620     mpegvideo
1621     mpegvideoenc
1622     mss34dsp
1623     pixblockdsp
1624     qpeldsp
1625     qsv
1626     qsvdec
1627     qsvenc
1628     rangecoder
1629     riffdec
1630     riffenc
1631     rtpdec
1632     rtpenc_chain
1633     rv34dsp
1634     sinewin
1635     snappy
1636     startcode
1637     texturedsp
1638     texturedspenc
1639     tpeldsp
1640     videodsp
1641     vp3dsp
1642     vp56dsp
1643     vp8dsp
1644     wma_freqs
1645     wmv2dsp
1646 "
1647
1648 CMDLINE_SELECT="
1649     $ARCH_EXT_LIST
1650     $CONFIG_LIST
1651     $HAVE_LIST_CMDLINE
1652     $THREADS_LIST
1653     asm
1654     cross_compile
1655     debug
1656     extra_warnings
1657     logging
1658     lto
1659     optimizations
1660     rpath
1661 "
1662
1663 PATHS_LIST="
1664     bindir
1665     datadir
1666     docdir
1667     incdir
1668     libdir
1669     mandir
1670     prefix
1671     shlibdir
1672 "
1673
1674 CMDLINE_SET="
1675     $PATHS_LIST
1676     ar
1677     arch
1678     as
1679     build_suffix
1680     cc
1681     cpu
1682     cross_prefix
1683     dep_cc
1684     env
1685     extra_version
1686     host_cc
1687     host_cflags
1688     host_ld
1689     host_ldflags
1690     host_libs
1691     host_os
1692     ld
1693     logfile
1694     malloc_prefix
1695     nm
1696     optflags
1697     pkg_config
1698     pkg_config_flags
1699     random_seed
1700     samples
1701     sysinclude
1702     sysroot
1703     target_exec
1704     target_os
1705     target_path
1706     target_samples
1707     toolchain
1708 "
1709
1710 CMDLINE_APPEND="
1711     extra_cflags
1712     host_cppflags
1713 "
1714
1715 # code dependency declarations
1716
1717 # architecture extensions
1718
1719 armv5te_deps="arm"
1720 armv6_deps="arm"
1721 armv6t2_deps="arm"
1722 armv8_deps="aarch64"
1723 neon_deps_any="aarch64 arm"
1724 intrinsics_neon_deps="neon"
1725 vfp_deps_any="aarch64 arm"
1726 vfpv3_deps="vfp"
1727
1728 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1729
1730 altivec_deps="ppc"
1731 ppc4xx_deps="ppc"
1732 vsx_deps="altivec"
1733 power8_deps="vsx"
1734
1735 cpunop_deps="i686"
1736 x86_64_select="i686"
1737 x86_64_suggest="fast_cmov"
1738
1739 amd3dnow_deps="mmx"
1740 amd3dnowext_deps="amd3dnow"
1741 i686_deps="x86"
1742 mmx_deps="x86"
1743 mmxext_deps="mmx"
1744 sse_deps="mmxext"
1745 sse2_deps="sse"
1746 sse3_deps="sse2"
1747 ssse3_deps="sse3"
1748 sse4_deps="ssse3"
1749 sse42_deps="sse4"
1750 avx_deps="sse42"
1751 xop_deps="avx"
1752 fma3_deps="avx"
1753 fma4_deps="avx"
1754 avx2_deps="avx"
1755
1756 mmx_external_deps="yasm"
1757 mmx_inline_deps="inline_asm"
1758 mmx_suggest="mmx_external mmx_inline"
1759
1760 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1761     eval dep=\$${ext}_deps
1762     eval ${ext}_external_deps='"${dep}_external"'
1763     eval ${ext}_inline_deps='"${dep}_inline"'
1764     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1765 done
1766
1767 aligned_stack_if_any="aarch64 ppc x86"
1768 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1769 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1770 fast_unaligned_if_any="aarch64 ppc x86"
1771 simd_align_16_if_any="altivec neon sse"
1772
1773 # system capabilities
1774 symver_if_any="symver_asm_label symver_gnu_asm"
1775 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1776
1777 # threading support
1778 atomics_gcc_if="sync_val_compare_and_swap"
1779 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1780 atomics_win32_if="MemoryBarrier"
1781 atomics_native_if_any="$ATOMICS_LIST"
1782 w32threads_deps="atomics_native"
1783 threads_if_any="$THREADS_LIST"
1784
1785 # subsystems
1786 dct_select="rdft"
1787 error_resilience_select="me_cmp"
1788 faandct_deps="faan fdctdsp"
1789 faanidct_deps="faan idctdsp"
1790 intrax8_select="error_resilience"
1791 mdct_select="fft"
1792 rdft_select="fft"
1793 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1794 mpeg_er_select="error_resilience"
1795 mpegaudio_select="mpegaudiodsp"
1796 mpegaudiodsp_select="dct"
1797 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp videodsp"
1798 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1799 nvenc_deps_any="dlopen LoadLibrary"
1800 nvenc_extralibs='$ldl'
1801 qsvdec_select="qsv"
1802 qsvenc_select="qsv"
1803
1804 # decoders / encoders
1805 aac_decoder_select="imdct15 mdct sinewin"
1806 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1807 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1808 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1809 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1810 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1811 adpcm_g722_decoder_select="g722dsp"
1812 adpcm_g722_encoder_select="g722dsp"
1813 aic_decoder_select="golomb idctdsp"
1814 alac_encoder_select="lpc"
1815 als_decoder_select="bswapdsp"
1816 amrnb_decoder_select="lsp"
1817 amrwb_decoder_select="lsp"
1818 amv_decoder_select="sp5x_decoder"
1819 ape_decoder_select="bswapdsp"
1820 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1821 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1822 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1823 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1824 atrac1_decoder_select="mdct sinewin"
1825 atrac3_decoder_select="mdct"
1826 atrac3p_decoder_select="mdct sinewin"
1827 bink_decoder_select="blockdsp hpeldsp"
1828 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1829 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1830 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1831 cllc_decoder_select="bswapdsp"
1832 comfortnoise_encoder_select="lpc"
1833 cook_decoder_select="audiodsp mdct sinewin"
1834 cscd_decoder_select="lzo"
1835 cscd_decoder_suggest="zlib"
1836 dca_decoder_select="fmtconvert mdct"
1837 dds_decoder_select="texturedsp"
1838 dnxhd_decoder_select="blockdsp idctdsp"
1839 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1840 dvvideo_decoder_select="dvprofile idctdsp"
1841 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1842 dxa_decoder_deps="zlib"
1843 eac3_decoder_select="ac3_decoder"
1844 eac3_encoder_select="ac3_encoder"
1845 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1846 eatgq_decoder_select="aandcttables idctdsp"
1847 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
1848 exr_decoder_deps="zlib"
1849 ffv1_decoder_select="golomb rangecoder"
1850 ffv1_encoder_select="rangecoder"
1851 ffvhuff_decoder_select="huffyuv_decoder"
1852 ffvhuff_encoder_select="huffyuv_encoder"
1853 fic_decoder_select="golomb"
1854 flac_decoder_select="flacdsp golomb"
1855 flac_encoder_select="bswapdsp flacdsp golomb lpc"
1856 flashsv_decoder_deps="zlib"
1857 flashsv_encoder_deps="zlib"
1858 flashsv2_decoder_deps="zlib"
1859 flv_decoder_select="h263_decoder"
1860 flv_encoder_select="h263_encoder"
1861 fourxm_decoder_select="blockdsp bswapdsp"
1862 fraps_decoder_select="bswapdsp huffman"
1863 g2m_decoder_deps="zlib"
1864 g2m_decoder_select="blockdsp idctdsp jpegtables"
1865 h261_decoder_select="mpeg_er mpegvideo"
1866 h261_encoder_select="aandcttables mpegvideoenc"
1867 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1868 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1869 h263i_decoder_select="h263_decoder"
1870 h263p_encoder_select="h263_encoder"
1871 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
1872 h264_decoder_suggest="error_resilience"
1873 h264_nvenc_encoder_deps="nvenc"
1874 h264_qsv_decoder_deps="libmfx"
1875 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
1876 h264_qsv_encoder_deps="libmfx"
1877 h264_qsv_encoder_select="qsvenc"
1878 hap_decoder_select="snappy texturedsp"
1879 hap_encoder_deps="libsnappy"
1880 hap_encoder_select="texturedspenc"
1881 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1882 hevc_nvenc_encoder_deps="nvenc"
1883 hevc_qsv_encoder_deps="libmfx"
1884 hevc_qsv_encoder_select="qsvenc"
1885 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1886 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1887 iac_decoder_select="imc_decoder"
1888 imc_decoder_select="bswapdsp fft mdct sinewin"
1889 indeo3_decoder_select="hpeldsp"
1890 indeo4_decoder_select="ividsp"
1891 indeo5_decoder_select="ividsp"
1892 interplay_video_decoder_select="hpeldsp"
1893 jpegls_decoder_select="golomb mjpeg_decoder"
1894 jpegls_encoder_select="golomb"
1895 jv_decoder_select="blockdsp"
1896 lagarith_decoder_select="huffyuvdsp"
1897 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
1898 loco_decoder_select="golomb"
1899 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1900 metasound_decoder_select="lsp mdct sinewin"
1901 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1902 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
1903 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
1904 mjpegb_decoder_select="mjpeg_decoder"
1905 mlp_decoder_select="mlp_parser"
1906 motionpixels_decoder_select="bswapdsp"
1907 mp1_decoder_select="mpegaudio"
1908 mp1float_decoder_select="mpegaudio"
1909 mp2_decoder_select="mpegaudio"
1910 mp2float_decoder_select="mpegaudio"
1911 mp3_decoder_select="mpegaudio"
1912 mp3adu_decoder_select="mpegaudio"
1913 mp3adufloat_decoder_select="mpegaudio"
1914 mp3float_decoder_select="mpegaudio"
1915 mp3on4_decoder_select="mpegaudio"
1916 mp3on4float_decoder_select="mpegaudio"
1917 mpc7_decoder_select="bswapdsp mpegaudiodsp"
1918 mpc8_decoder_select="mpegaudiodsp"
1919 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1920 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1921 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
1922 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1923 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
1924 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1925 mpeg2_qsv_decoder_deps="libmfx"
1926 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
1927 mpeg2_qsv_encoder_deps="libmfx"
1928 mpeg2_qsv_encoder_select="qsvenc"
1929 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1930 mpeg4_encoder_select="h263_encoder"
1931 msa1_decoder_select="mss34dsp"
1932 msmpeg4v1_decoder_select="h263_decoder"
1933 msmpeg4v2_decoder_select="h263_decoder"
1934 msmpeg4v2_encoder_select="h263_encoder"
1935 msmpeg4v3_decoder_select="h263_decoder"
1936 msmpeg4v3_encoder_select="h263_encoder"
1937 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
1938 mts2_decoder_select="mss34dsp"
1939 mxpeg_decoder_select="mjpeg_decoder"
1940 nellymoser_decoder_select="mdct sinewin"
1941 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1942 nuv_decoder_select="idctdsp lzo"
1943 on2avc_decoder_select="mdct"
1944 opus_decoder_deps="avresample"
1945 opus_decoder_select="imdct15"
1946 png_decoder_deps="zlib"
1947 png_encoder_deps="zlib"
1948 png_encoder_select="huffyuvencdsp"
1949 prores_decoder_select="idctdsp"
1950 prores_encoder_select="fdctdsp"
1951 qcelp_decoder_select="lsp"
1952 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1953 ra_144_encoder_select="audio_frame_queue lpc"
1954 ralf_decoder_select="golomb"
1955 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1956 rv10_encoder_select="h263_encoder"
1957 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1958 rv20_encoder_select="h263_encoder"
1959 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
1960 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
1961 shorten_decoder_select="golomb"
1962 sipr_decoder_select="lsp"
1963 sp5x_decoder_select="mjpeg_decoder"
1964 svq1_decoder_select="hpeldsp"
1965 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
1966 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1967 svq3_decoder_suggest="zlib"
1968 tak_decoder_select="audiodsp"
1969 tdsc_decoder_deps="zlib"
1970 tdsc_decoder_select="mjpeg_decoder"
1971 theora_decoder_select="vp3_decoder"
1972 thp_decoder_select="mjpeg_decoder"
1973 tiff_decoder_suggest="zlib"
1974 tiff_encoder_suggest="zlib"
1975 truehd_decoder_select="mlp_decoder"
1976 truemotion2_decoder_select="bswapdsp"
1977 truespeech_decoder_select="bswapdsp"
1978 tscc_decoder_deps="zlib"
1979 txd_decoder_select="texturedsp"
1980 twinvq_decoder_select="mdct lsp sinewin"
1981 utvideo_decoder_select="bswapdsp"
1982 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
1983 vble_decoder_select="huffyuvdsp"
1984 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
1985 vc1image_decoder_select="vc1_decoder"
1986 vorbis_decoder_select="mdct"
1987 vorbis_encoder_select="mdct"
1988 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1989 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
1990 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
1991 vp6a_decoder_select="vp6_decoder"
1992 vp6f_decoder_select="vp6_decoder"
1993 vp7_decoder_select="h264pred videodsp vp8dsp"
1994 vp8_decoder_select="h264pred videodsp vp8dsp"
1995 vp9_decoder_select="videodsp"
1996 webp_decoder_select="vp8_decoder"
1997 wmapro_decoder_select="mdct sinewin wma_freqs"
1998 wmav1_decoder_select="mdct sinewin wma_freqs"
1999 wmav1_encoder_select="mdct sinewin wma_freqs"
2000 wmav2_decoder_select="mdct sinewin wma_freqs"
2001 wmav2_encoder_select="mdct sinewin wma_freqs"
2002 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2003 wmv1_decoder_select="h263_decoder"
2004 wmv1_encoder_select="h263_encoder"
2005 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2006 wmv2_encoder_select="h263_encoder wmv2dsp"
2007 wmv3_decoder_select="vc1_decoder"
2008 wmv3image_decoder_select="wmv3_decoder"
2009 zerocodec_decoder_deps="zlib"
2010 zlib_decoder_deps="zlib"
2011 zlib_encoder_deps="zlib"
2012 zmbv_decoder_deps="zlib"
2013 zmbv_encoder_deps="zlib"
2014
2015 # hardware accelerators
2016 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2017 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2018 vaapi_deps="va_va_h"
2019 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2020 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2021 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2022
2023 h263_vaapi_hwaccel_deps="vaapi"
2024 h263_vaapi_hwaccel_select="h263_decoder"
2025 h263_vdpau_hwaccel_deps="vdpau"
2026 h263_vdpau_hwaccel_select="h263_decoder"
2027 h264_d3d11va_hwaccel_deps="d3d11va"
2028 h264_d3d11va_hwaccel_select="h264_decoder"
2029 h264_dxva2_hwaccel_deps="dxva2"
2030 h264_dxva2_hwaccel_select="h264_decoder"
2031 h264_mmal_decoder_deps="mmal"
2032 h264_mmal_hwaccel_deps="mmal"
2033 h264_mmal_decoder_select="h264_decoder"
2034 h264_mmal_encoder_deps="mmal"
2035 h264_qsv_hwaccel_deps="libmfx"
2036 h264_vaapi_hwaccel_deps="vaapi"
2037 h264_vaapi_hwaccel_select="h264_decoder"
2038 h264_vda_hwaccel_deps="vda"
2039 h264_vda_hwaccel_select="h264_decoder"
2040 h264_vda_old_hwaccel_deps="vda"
2041 h264_vda_old_hwaccel_select="h264_decoder"
2042 h264_vdpau_hwaccel_deps="vdpau"
2043 h264_vdpau_hwaccel_select="h264_decoder"
2044 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2045 hevc_d3d11va_hwaccel_select="hevc_decoder"
2046 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2047 hevc_dxva2_hwaccel_select="hevc_decoder"
2048 mpeg1_vdpau_hwaccel_deps="vdpau"
2049 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2050 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2051 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2052 mpeg2_dxva2_hwaccel_deps="dxva2"
2053 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2054 mpeg2_qsv_hwaccel_deps="libmfx"
2055 mpeg2_vaapi_hwaccel_deps="vaapi"
2056 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2057 mpeg2_vdpau_hwaccel_deps="vdpau"
2058 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2059 mpeg4_vaapi_hwaccel_deps="vaapi"
2060 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2061 mpeg4_vdpau_hwaccel_deps="vdpau"
2062 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2063 vc1_d3d11va_hwaccel_deps="d3d11va"
2064 vc1_d3d11va_hwaccel_select="vc1_decoder"
2065 vc1_dxva2_hwaccel_deps="dxva2"
2066 vc1_dxva2_hwaccel_select="vc1_decoder"
2067 vc1_vaapi_hwaccel_deps="vaapi"
2068 vc1_vaapi_hwaccel_select="vc1_decoder"
2069 vc1_vdpau_hwaccel_deps="vdpau"
2070 vc1_vdpau_hwaccel_select="vc1_decoder"
2071 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2072 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2073 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2074 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2075
2076 # parsers
2077 h264_parser_select="h264_decoder"
2078 hevc_parser_select="golomb"
2079 mpegvideo_parser_select="mpegvideo"
2080 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2081 vc1_parser_select="mpegvideo startcode vc1_decoder"
2082
2083 # bitstream_filters
2084 mjpeg2jpeg_bsf_select="jpegtables"
2085
2086 # external libraries
2087 libdcadec_decoder_deps="libdcadec"
2088 libfaac_encoder_deps="libfaac"
2089 libfaac_encoder_select="audio_frame_queue"
2090 libfdk_aac_decoder_deps="libfdk_aac"
2091 libfdk_aac_encoder_deps="libfdk_aac"
2092 libfdk_aac_encoder_select="audio_frame_queue"
2093 libgsm_decoder_deps="libgsm"
2094 libgsm_encoder_deps="libgsm"
2095 libgsm_ms_decoder_deps="libgsm"
2096 libgsm_ms_encoder_deps="libgsm"
2097 libilbc_decoder_deps="libilbc"
2098 libilbc_encoder_deps="libilbc"
2099 libmp3lame_encoder_deps="libmp3lame"
2100 libmp3lame_encoder_select="audio_frame_queue"
2101 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2102 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2103 libopencore_amrnb_encoder_select="audio_frame_queue"
2104 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2105 libopenh264_encoder_deps="libopenh264"
2106 libopenjpeg_decoder_deps="libopenjpeg"
2107 libopenjpeg_encoder_deps="libopenjpeg"
2108 libopus_decoder_deps="libopus"
2109 libopus_encoder_deps="libopus"
2110 libopus_encoder_select="audio_frame_queue"
2111 libschroedinger_decoder_deps="libschroedinger"
2112 libschroedinger_encoder_deps="libschroedinger"
2113 libspeex_decoder_deps="libspeex"
2114 libspeex_encoder_deps="libspeex"
2115 libspeex_encoder_select="audio_frame_queue"
2116 libtheora_encoder_deps="libtheora"
2117 libtwolame_encoder_deps="libtwolame"
2118 libvo_aacenc_encoder_deps="libvo_aacenc"
2119 libvo_aacenc_encoder_select="audio_frame_queue"
2120 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2121 libvorbis_encoder_deps="libvorbis"
2122 libvorbis_encoder_select="audio_frame_queue"
2123 libvpx_vp8_decoder_deps="libvpx"
2124 libvpx_vp8_encoder_deps="libvpx"
2125 libvpx_vp9_decoder_deps="libvpx"
2126 libvpx_vp9_encoder_deps="libvpx"
2127 libwavpack_encoder_deps="libwavpack"
2128 libwebp_encoder_deps="libwebp"
2129 libx262_encoder_deps="libx262"
2130 libx264_encoder_deps="libx264"
2131 libx265_encoder_deps="libx265"
2132 libxavs_encoder_deps="libxavs"
2133 libxvid_encoder_deps="libxvid"
2134
2135 # demuxers / muxers
2136 ac3_demuxer_select="ac3_parser"
2137 asf_demuxer_select="riffdec"
2138 asf_muxer_select="riffenc"
2139 asf_stream_muxer_select="asf_muxer"
2140 avi_demuxer_select="riffdec"
2141 avi_muxer_select="riffenc"
2142 avisynth_demuxer_deps="avisynth"
2143 avisynth_demuxer_select="riffdec"
2144 caf_demuxer_select="riffdec"
2145 dash_muxer_select="mp4_muxer"
2146 dirac_demuxer_select="dirac_parser"
2147 dv_demuxer_select="dvprofile"
2148 dv_muxer_select="dvprofile"
2149 dxa_demuxer_select="riffdec"
2150 eac3_demuxer_select="ac3_parser"
2151 f4v_muxer_select="mov_muxer"
2152 flac_demuxer_select="flac_parser"
2153 hds_muxer_select="flv_muxer"
2154 hls_muxer_select="mpegts_muxer"
2155 ipod_muxer_select="mov_muxer"
2156 ismv_muxer_select="mov_muxer"
2157 matroska_audio_muxer_select="matroska_muxer"
2158 matroska_demuxer_select="riffdec"
2159 matroska_demuxer_suggest="bzlib lzo zlib"
2160 matroska_muxer_select="riffenc"
2161 mmf_muxer_select="riffenc"
2162 mov_demuxer_select="riffdec"
2163 mov_demuxer_suggest="zlib"
2164 mov_muxer_select="riffenc rtpenc_chain"
2165 mp3_demuxer_select="mpegaudio_parser"
2166 mp4_muxer_select="mov_muxer"
2167 mpegts_muxer_select="adts_muxer latm_muxer"
2168 mpegtsraw_demuxer_select="mpegts_demuxer"
2169 mxf_d10_muxer_select="mxf_muxer"
2170 nut_muxer_select="riffenc"
2171 nuv_demuxer_select="riffdec"
2172 oga_muxer_select="ogg_muxer"
2173 ogg_demuxer_select="golomb"
2174 opus_muxer_select="ogg_muxer"
2175 psp_muxer_select="mov_muxer"
2176 rtp_demuxer_select="sdp_demuxer"
2177 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2178 rtsp_demuxer_select="http_protocol rtpdec"
2179 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2180 sap_demuxer_select="sdp_demuxer"
2181 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2182 sdp_demuxer_select="rtpdec"
2183 smoothstreaming_muxer_select="ismv_muxer"
2184 spdif_muxer_select="aac_parser"
2185 spx_muxer_select="ogg_muxer"
2186 tak_demuxer_select="tak_parser"
2187 tg2_muxer_select="mov_muxer"
2188 tgp_muxer_select="mov_muxer"
2189 w64_demuxer_select="wav_demuxer"
2190 wav_demuxer_select="riffdec"
2191 wav_muxer_select="riffenc"
2192 webm_muxer_select="riffenc"
2193 wtv_demuxer_select="riffdec"
2194 xmv_demuxer_select="riffdec"
2195 xwma_demuxer_select="riffdec"
2196
2197 # indevs / outdevs
2198 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2199 alsa_outdev_deps="alsa_asoundlib_h"
2200 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2201 dv1394_indev_deps="dv1394"
2202 dv1394_indev_select="dv_demuxer"
2203 fbdev_indev_deps="linux_fb_h"
2204 jack_indev_deps="jack_jack_h pthreads"
2205 libcdio_indev_deps="libcdio"
2206 libdc1394_indev_deps="libdc1394"
2207 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2208 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2209 pulse_indev_deps="libpulse"
2210 sndio_indev_deps="sndio_h"
2211 sndio_outdev_deps="sndio_h"
2212 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2213 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2214 vfwcap_indev_extralibs="-lavicap32"
2215 x11grab_indev_deps="x11grab"
2216 x11grab_xcb_indev_deps="libxcb"
2217
2218 # protocols
2219 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2220 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2221 ffrtmpcrypt_protocol_select="tcp_protocol"
2222 ffrtmphttp_protocol_deps="!librtmp_protocol"
2223 ffrtmphttp_protocol_select="http_protocol"
2224 gopher_protocol_select="network"
2225 http_protocol_select="tcp_protocol"
2226 httpproxy_protocol_select="tcp_protocol"
2227 https_protocol_select="tls_protocol"
2228 icecast_protocol_select="http_protocol"
2229 librtmp_protocol_deps="librtmp"
2230 librtmpe_protocol_deps="librtmp"
2231 librtmps_protocol_deps="librtmp"
2232 librtmpt_protocol_deps="librtmp"
2233 librtmpte_protocol_deps="librtmp"
2234 mmsh_protocol_select="http_protocol"
2235 mmst_protocol_select="network"
2236 rtmp_protocol_deps="!librtmp_protocol"
2237 rtmp_protocol_select="tcp_protocol"
2238 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2239 rtmps_protocol_deps="!librtmp_protocol"
2240 rtmps_protocol_select="tls_protocol"
2241 rtmpt_protocol_select="ffrtmphttp_protocol"
2242 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2243 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2244 rtp_protocol_select="udp_protocol"
2245 sctp_protocol_deps="struct_sctp_event_subscribe"
2246 sctp_protocol_select="network"
2247 srtp_protocol_select="rtp_protocol"
2248 tcp_protocol_select="network"
2249 tls_gnutls_protocol_deps="gnutls"
2250 tls_gnutls_protocol_select="tcp_protocol"
2251 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2252 tls_openssl_protocol_select="tcp_protocol"
2253 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2254 udp_protocol_select="network"
2255 unix_protocol_deps="sys_un_h"
2256 unix_protocol_select="network"
2257
2258 # filters
2259 blackframe_filter_deps="gpl"
2260 boxblur_filter_deps="gpl"
2261 bs2b_filter_deps="libbs2b"
2262 cropdetect_filter_deps="gpl"
2263 delogo_filter_deps="gpl"
2264 drawtext_filter_deps="libfreetype"
2265 frei0r_filter_deps="frei0r dlopen"
2266 frei0r_filter_extralibs='$ldl'
2267 frei0r_src_filter_deps="frei0r dlopen"
2268 frei0r_src_filter_extralibs='$ldl'
2269 hqdn3d_filter_deps="gpl"
2270 interlace_filter_deps="gpl"
2271 ocv_filter_deps="libopencv"
2272 resample_filter_deps="avresample"
2273 scale_filter_deps="swscale"
2274
2275 # examples
2276 avcodec_example_deps="avcodec avutil"
2277 filter_audio_example_deps="avfilter avutil"
2278 metadata_example_deps="avformat avutil"
2279 output_example_deps="avcodec avformat avutil swscale"
2280 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2281 transcode_aac_example_deps="avcodec avformat avresample"
2282
2283 # libraries, in linking order
2284 avcodec_deps="avutil"
2285 avdevice_deps="avformat avcodec avutil"
2286 avfilter_deps="avutil"
2287 avformat_deps="avcodec avutil"
2288 avresample_deps="avutil"
2289 swscale_deps="avutil"
2290
2291 # programs
2292 avconv_deps="avcodec avfilter avformat avresample swscale"
2293 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2294                fps_filter null_filter resample_filter scale_filter
2295                setpts_filter trim_filter"
2296 avplay_deps="avcodec avformat avresample swscale sdl"
2297 avplay_libs='$sdl_libs'
2298 avplay_select="rdft transpose_filter hflip_filter vflip_filter"
2299 avprobe_deps="avcodec avformat"
2300
2301 # documentation
2302 pod2man_deps="doc"
2303 texi2html_deps="doc"
2304
2305 # default parameters
2306
2307 logfile="config.log"
2308
2309 # installation paths
2310 prefix_default="/usr/local"
2311 bindir_default='${prefix}/bin'
2312 datadir_default='${prefix}/share/avconv'
2313 docdir_default='${prefix}/share/doc/libav'
2314 incdir_default='${prefix}/include'
2315 libdir_default='${prefix}/lib'
2316 mandir_default='${prefix}/share/man'
2317 shlibdir_default="$libdir_default"
2318
2319 # toolchain
2320 ar_default="ar"
2321 cc_default="gcc"
2322 host_cc_default="gcc"
2323 cp_f="cp -f"
2324 ln_s="ln -s -f"
2325 nm_default="nm -g"
2326 objformat="elf"
2327 pkg_config_default=pkg-config
2328 ranlib="ranlib"
2329 strip="strip"
2330 yasmexe="yasm"
2331
2332 # machine
2333 arch_default=$(uname -m)
2334 cpu="generic"
2335 intrinsics="none"
2336
2337 # OS
2338 target_os_default=$(tolower $(uname -s))
2339 host_os=$target_os_default
2340
2341 # configurable options
2342 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2343
2344 enable asm
2345 enable debug
2346 enable doc
2347 enable faan faandct faanidct
2348 enable optimizations
2349 enable safe_bitstream_reader
2350 enable static
2351 enable swscale_alpha
2352 enable valgrind_backtrace
2353
2354 # By default, enable only those hwaccels that have no external dependencies.
2355 enable d3d11va dxva2 vda vdpau
2356
2357 # build settings
2358 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2359 LIBPREF="lib"
2360 LIBSUF=".a"
2361 FULLNAME='$(NAME)$(BUILDSUF)'
2362 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2363 SLIBPREF="lib"
2364 SLIBSUF=".so"
2365 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2366 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2367 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2368 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2369 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2370 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2371
2372 asflags_filter=echo
2373 cflags_filter=echo
2374 ldflags_filter=echo
2375
2376 AS_C='-c'
2377 AS_O='-o $@'
2378 CC_C='-c'
2379 CC_E='-E -o $@'
2380 CC_O='-o $@'
2381 LD_O='-o $@'
2382 LD_LIB='-l%'
2383 LD_PATH='-L'
2384 HOSTCC_C='-c'
2385 HOSTCC_E='-E -o $@'
2386 HOSTCC_O='-o $@'
2387 HOSTLD_O='-o $@'
2388
2389 host_libs='-lm'
2390 host_cflags_filter=echo
2391 host_ldflags_filter=echo
2392
2393 target_path='$(CURDIR)'
2394
2395 # since the object filename is not given with the -MM flag, the compiler
2396 # is only able to print the basename, and we must add the path ourselves
2397 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2398 DEPFLAGS='-MM'
2399
2400 # find source path
2401 if test -f configure; then
2402     source_path=.
2403 else
2404     source_path=$(cd $(dirname "$0"); pwd)
2405     echo "$source_path" | grep -q '[[:blank:]]' &&
2406         die "Out of tree builds are impossible with whitespace in source path."
2407     test -e "$source_path/config.h" &&
2408         die "Out of tree builds are impossible with config.h in source dir."
2409 fi
2410
2411 for v in "$@"; do
2412     r=${v#*=}
2413     l=${v%"$r"}
2414     r=$(sh_quote "$r")
2415     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2416 done
2417
2418 find_things(){
2419     thing=$1
2420     pattern=$2
2421     file=$source_path/$3
2422     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2423 }
2424
2425 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2426 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2427 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2428 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2429 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2430 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2431 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2432 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2433 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2434 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2435 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2436
2437 ALL_COMPONENTS="
2438     $BSF_LIST
2439     $DECODER_LIST
2440     $DEMUXER_LIST
2441     $ENCODER_LIST
2442     $FILTER_LIST
2443     $HWACCEL_LIST
2444     $INDEV_LIST
2445     $MUXER_LIST
2446     $OUTDEV_LIST
2447     $PARSER_LIST
2448     $PROTOCOL_LIST
2449 "
2450
2451 for n in $COMPONENT_LIST; do
2452     v=$(toupper ${n%s})_LIST
2453     eval enable \$$v
2454     eval ${n}_if_any="\$$v"
2455 done
2456
2457 enable $ARCH_EXT_LIST
2458
2459 die_unknown(){
2460     echo "Unknown option \"$1\"."
2461     echo "See $0 --help for available options."
2462     exit 1
2463 }
2464
2465 print_3_columns() {
2466     cat | tr ' ' '\n' | sort | pr -r -3 -t
2467 }
2468
2469 show_list() {
2470     suffix=_$1
2471     shift
2472     echo $* | sed s/$suffix//g | print_3_columns
2473     exit 0
2474 }
2475
2476 rand_list(){
2477     IFS=', '
2478     set -- $*
2479     unset IFS
2480     for thing; do
2481         comp=${thing%:*}
2482         prob=${thing#$comp}
2483         prob=${prob#:}
2484         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2485         echo "prob ${prob:-0.5}"
2486         printf '%s\n' $comp
2487     done
2488 }
2489
2490 do_random(){
2491     action=$1
2492     shift
2493     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2494     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2495 }
2496
2497 for opt do
2498     optval="${opt#*=}"
2499     case "$opt" in
2500         --extra-ldflags=*)
2501             add_ldflags $optval
2502         ;;
2503         --extra-ldexeflags=*)
2504             add_ldexeflags $optval
2505         ;;
2506         --extra-libs=*)
2507             add_extralibs $optval
2508         ;;
2509         --disable-devices)
2510             disable $INDEV_LIST $OUTDEV_LIST
2511         ;;
2512         --enable-debug=*)
2513             debuglevel="$optval"
2514         ;;
2515         --disable-programs)
2516             disable $PROGRAM_LIST
2517         ;;
2518         --disable-everything)
2519             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2520         ;;
2521         --disable-all)
2522             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2523             disable $LIBRARY_LIST $PROGRAM_LIST doc
2524         ;;
2525         --enable-random|--disable-random)
2526             action=${opt%%-random}
2527             do_random ${action#--} $COMPONENT_LIST
2528         ;;
2529         --enable-random=*|--disable-random=*)
2530             action=${opt%%-random=*}
2531             do_random ${action#--} $optval
2532         ;;
2533         --enable-*=*|--disable-*=*)
2534             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2535             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2536             eval list=\$$(toupper $thing)_LIST
2537             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2538             $action $(filter "$name" $list)
2539         ;;
2540         --enable-avserver|--disable-avserver*)
2541             warn "avserver has been removed, the ${opt} option is only"\
2542                  "provided for compatibility and will be removed in the future"
2543         ;;
2544         --enable-?*|--disable-?*)
2545             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2546             if is_in $option $COMPONENT_LIST; then
2547                 test $action = disable && action=unset
2548                 eval $action \$$(toupper ${option%s})_LIST
2549             elif is_in $option $CMDLINE_SELECT; then
2550                 $action $option
2551             else
2552                 die_unknown $opt
2553             fi
2554         ;;
2555         --list-*)
2556             NAME="${opt#--list-}"
2557             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2558             NAME=${NAME%s}
2559             eval show_list $NAME \$$(toupper $NAME)_LIST
2560         ;;
2561         --help|-h) show_help
2562         ;;
2563         *)
2564             optname="${opt%%=*}"
2565             optname="${optname#--}"
2566             optname=$(echo "$optname" | sed 's/-/_/g')
2567             if is_in $optname $CMDLINE_SET; then
2568                 eval $optname='$optval'
2569             elif is_in $optname $CMDLINE_APPEND; then
2570                 append $optname "$optval"
2571             else
2572                 die_unknown $opt
2573             fi
2574         ;;
2575     esac
2576 done
2577
2578 for e in $env; do
2579     eval "export $e"
2580 done
2581
2582 disabled logging && logfile=/dev/null
2583
2584 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2585 set >> $logfile
2586
2587 case "$toolchain" in
2588     clang-asan)
2589         cc_default="clang"
2590         add_cflags  -fsanitize=address
2591         add_ldflags -fsanitize=address
2592     ;;
2593     clang-tsan)
2594         cc_default="clang"
2595         add_cflags  -fsanitize=thread -pie
2596         add_ldflags -fsanitize=thread -pie
2597     ;;
2598     clang-usan)
2599         cc_default="clang"
2600         add_cflags  -fsanitize=undefined -O1
2601         add_ldflags -fsanitize=undefined
2602     ;;
2603     gcc-asan)
2604         cc_default="gcc"
2605         add_cflags  -fsanitize=address
2606         add_ldflags -fsanitize=address
2607     ;;
2608     gcc-tsan)
2609         cc_default="gcc"
2610         add_cflags  -fsanitize=thread -pie -fPIC
2611         add_ldflags -fsanitize=thread -pie -fPIC
2612     ;;
2613     gcc-usan)
2614         cc_default="gcc"
2615         add_cflags  -fsanitize=undefined
2616         add_ldflags -fsanitize=undefined
2617     ;;
2618     valgrind-massif)
2619         target_exec_default="valgrind"
2620         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2621     ;;
2622     valgrind-memcheck)
2623         target_exec_default="valgrind"
2624         target_exec_args="--track-origins=yes --leak-check=full"
2625     ;;
2626     msvc)
2627         # Check whether the current MSVC version needs the C99 converter.
2628         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2629         # support enough of C99 to build libav. Default to the new
2630         # behaviour if the regexp was unable to match anything, since this
2631         # successfully parses the version number of existing supported
2632         # versions that require the converter (MSVC 2010 and 2012).
2633         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2634         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2635             cc_default="cl"
2636         else
2637             cc_default="c99wrap cl"
2638         fi
2639         ld_default="$source_path/compat/windows/mslink"
2640         nm_default="dumpbin -symbols"
2641         ar_default="lib"
2642         target_os_default="win32"
2643         # Use a relative path for TMPDIR. This makes sure all the
2644         # ffconf temp files are written with a relative path, avoiding
2645         # issues with msys/win32 path conversion for MSVC parameters
2646         # such as -Fo<file> or -out:<file>.
2647         TMPDIR=.
2648     ;;
2649     icl)
2650         cc_default="icl"
2651         ld_default="xilink"
2652         nm_default="dumpbin -symbols"
2653         ar_default="xilib"
2654         target_os_default="win32"
2655         TMPDIR=.
2656     ;;
2657     gcov)
2658         add_cflags  -fprofile-arcs -ftest-coverage
2659         add_ldflags -fprofile-arcs -ftest-coverage
2660     ;;
2661     hardened)
2662         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2663         add_cflags   -fno-strict-overflow -fstack-protector-all
2664         add_ldflags  -Wl,-z,relro -Wl,-z,now
2665     ;;
2666     ?*)
2667         die "Unknown toolchain $toolchain"
2668     ;;
2669 esac
2670
2671 test -n "$cross_prefix" && enable cross_compile
2672
2673 if enabled cross_compile; then
2674     test -n "$arch" && test -n "$target_os" ||
2675         die "Must specify target arch and OS when cross-compiling"
2676 fi
2677
2678 ar_default="${cross_prefix}${ar_default}"
2679 cc_default="${cross_prefix}${cc_default}"
2680 nm_default="${cross_prefix}${nm_default}"
2681 pkg_config_default="${cross_prefix}${pkg_config_default}"
2682 ranlib="${cross_prefix}${ranlib}"
2683 strip="${cross_prefix}${strip}"
2684
2685 sysinclude_default="${sysroot}/usr/include"
2686
2687 set_default arch cc pkg_config sysinclude target_exec target_os
2688 enabled cross_compile || host_cc_default=$cc
2689 set_default host_cc
2690
2691 if ! $pkg_config --version >/dev/null 2>&1; then
2692     warn "$pkg_config not found, library detection may fail."
2693     pkg_config=false
2694 fi
2695
2696 exesuf() {
2697     case $1 in
2698         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2699     esac
2700 }
2701
2702 EXESUF=$(exesuf $target_os)
2703 HOSTEXESUF=$(exesuf $host_os)
2704
2705 # set temporary file name
2706 : ${TMPDIR:=$TEMPDIR}
2707 : ${TMPDIR:=$TMP}
2708 : ${TMPDIR:=/tmp}
2709
2710 if ! check_cmd mktemp -u XXXXXX; then
2711     # simple replacement for missing mktemp
2712     # NOT SAFE FOR GENERAL USE
2713     mktemp(){
2714         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2715     }
2716 fi
2717
2718 tmpfile(){
2719     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2720         (set -C; exec > $tmp) 2>/dev/null ||
2721         die "Unable to create temporary file in $TMPDIR."
2722     append TMPFILES $tmp
2723     eval $1=$tmp
2724 }
2725
2726 trap 'rm -f -- $TMPFILES' EXIT
2727
2728 tmpfile TMPASM .asm
2729 tmpfile TMPC   .c
2730 tmpfile TMPE   $EXESUF
2731 tmpfile TMPH   .h
2732 tmpfile TMPO   .o
2733 tmpfile TMPS   .S
2734 tmpfile TMPSH  .sh
2735 tmpfile TMPV   .ver
2736
2737 unset -f mktemp
2738
2739 chmod +x $TMPE
2740
2741 # make sure we can execute files in $TMPDIR
2742 cat > $TMPSH 2>> $logfile <<EOF
2743 #! /bin/sh
2744 EOF
2745 chmod +x $TMPSH >> $logfile 2>&1
2746 if ! $TMPSH >> $logfile 2>&1; then
2747     cat <<EOF
2748 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2749 variable to another directory and make sure that it is not mounted noexec.
2750 EOF
2751     die "Sanity test failed."
2752 fi
2753
2754 armasm_flags(){
2755     for flag; do
2756         case $flag in
2757             # Filter out MSVC cl.exe options from cflags that shouldn't
2758             # be passed to gas-preprocessor
2759             -M[TD]*)                                            ;;
2760             *)                  echo $flag                      ;;
2761         esac
2762    done
2763 }
2764
2765 ccc_flags(){
2766     for flag; do
2767         case $flag in
2768             -std=c99)           echo -c99                       ;;
2769             -mcpu=*)            echo -arch ${flag#*=}           ;;
2770             -mieee)             echo -ieee                      ;;
2771             -O*|-fast)          echo $flag                      ;;
2772             -fno-math-errno)    echo -assume nomath_errno       ;;
2773             -g)                 echo -g3                        ;;
2774             -Wall)              echo -msg_enable level2         ;;
2775             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2776             -Wl,*)              echo $flag                      ;;
2777             -f*|-W*)                                            ;;
2778             *)                  echo $flag                      ;;
2779         esac
2780    done
2781 }
2782
2783 cparser_flags(){
2784     for flag; do
2785         case $flag in
2786             -Wno-switch)             echo -Wno-switch-enum ;;
2787             -Wno-format-zero-length) ;;
2788             -Wdisabled-optimization) ;;
2789             -Wno-pointer-sign)       echo -Wno-other ;;
2790             *)                       echo $flag ;;
2791         esac
2792     done
2793 }
2794
2795 msvc_common_flags(){
2796     for flag; do
2797         case $flag in
2798             # In addition to specifying certain flags under the compiler
2799             # specific filters, they must be specified here as well or else the
2800             # generic catch all at the bottom will print the original flag.
2801             -Wall)                ;;
2802             -std=c99)             ;;
2803             # Common flags
2804             -fomit-frame-pointer) ;;
2805             -g)                   echo -Z7 ;;
2806             -fno-math-errno)      ;;
2807             -fno-common)          ;;
2808             -fno-signed-zeros)    ;;
2809             -fPIC)                ;;
2810             -mthumb)              ;;
2811             -march=*)             ;;
2812             -lz)                  echo zlib.lib ;;
2813             -lavifil32)           echo vfw32.lib ;;
2814             -lavicap32)           echo vfw32.lib user32.lib ;;
2815             -l*)                  echo ${flag#-l}.lib ;;
2816             -L*)                  echo -libpath:${flag#-L} ;;
2817             *)                    echo $flag ;;
2818         esac
2819     done
2820 }
2821
2822 msvc_flags(){
2823     msvc_common_flags "$@"
2824     for flag; do
2825         case $flag in
2826             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2827                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2828                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2829                                        -wd4273 -wd4554 -wd4701 ;;
2830         esac
2831     done
2832 }
2833
2834 icl_flags(){
2835     msvc_common_flags "$@"
2836     for flag; do
2837         case $flag in
2838             # Despite what Intel's documentation says -Wall, which is supported
2839             # on Windows, does enable remarks so disable them here.
2840             -Wall)                echo $flag -Qdiag-disable:remark ;;
2841             -std=c99)             echo -Qstd=c99 ;;
2842         esac
2843     done
2844 }
2845
2846 pgi_flags(){
2847     for flag; do
2848         case $flag in
2849             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2850             -fomit-frame-pointer) echo -Mnoframe ;;
2851             -g)                   echo -gopt ;;
2852             *)                    echo $flag ;;
2853         esac
2854     done
2855 }
2856
2857 suncc_flags(){
2858     for flag; do
2859         case $flag in
2860             -march=*|-mcpu=*)
2861                 case "${flag#*=}" in
2862                     native)                   echo -xtarget=native       ;;
2863                     v9|niagara)               echo -xarch=sparc          ;;
2864                     ultrasparc)               echo -xarch=sparcvis       ;;
2865                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2866                     i586|pentium)             echo -xchip=pentium        ;;
2867                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2868                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2869                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2870                     pentium4*)          echo -xtarget=pentium4           ;;
2871                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2872                     *-sse3)             echo -xarch=sse3                 ;;
2873                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2874                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2875                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2876                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2877                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2878                     k8|opteron|athlon64|athlon-fx)
2879                                                echo -xarch=sse2a         ;;
2880                     athlon*)                   echo -xarch=pentium_proa  ;;
2881                 esac
2882                 ;;
2883             -std=c99)             echo -xc99              ;;
2884             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2885             -fPIC)                echo -KPIC -xcode=pic32 ;;
2886             -W*,*)                echo $flag              ;;
2887             -f*-*|-W*|-mimpure-text)                      ;;
2888             -shared)              echo -G                 ;;
2889             *)                    echo $flag              ;;
2890         esac
2891     done
2892 }
2893
2894 tms470_flags(){
2895     for flag; do
2896         case $flag in
2897             -march=*|-mcpu=*)
2898                 case "${flag#*=}" in
2899                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2900                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2901                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2902                     armv6*|arm11*)          echo -mv=6   ;;
2903                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2904                                             echo -mv=5e  ;;
2905                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2906                 esac
2907                 ;;
2908             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2909             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2910             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2911             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2912             -msoft-float)   echo --float_support=vfplib       ;;
2913             -O[0-3]|-mf=*)  echo $flag                        ;;
2914             -g)             echo -g -mn                       ;;
2915             -pds=*)         echo $flag                        ;;
2916             -D*|-I*)        echo $flag                        ;;
2917             --gcc|--abi=*)  echo $flag                        ;;
2918             -me)            echo $flag                        ;;
2919         esac
2920     done
2921 }
2922
2923 probe_cc(){
2924     pfx=$1
2925     _cc=$2
2926
2927     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2928     unset _ld_o _ldflags _ld_lib _ld_path
2929     unset _depflags _DEPCMD _DEPFLAGS
2930     _flags_filter=echo
2931
2932     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2933         _type=llvm_gcc
2934         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2935         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2936         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2937         _cflags_speed='-O3'
2938         _cflags_size='-Os'
2939     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2940         _type=gcc
2941         gcc_version=$($_cc --version | head -n1)
2942         gcc_basever=$($_cc -dumpversion)
2943         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2944         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2945         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2946         if ! $_cc -dumpversion | grep -q '^2\.'; then
2947             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2948         fi
2949         _cflags_speed='-O3'
2950         _cflags_size='-Os'
2951     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2952         _type=icc
2953         _ident=$($_cc --version | head -n1)
2954         _depflags='-MMD'
2955         _cflags_speed='-O3'
2956         _cflags_size='-Os'
2957         _cflags_noopt='-O1'
2958     elif $_cc -v 2>&1 | grep -q xlc; then
2959         _type=xlc
2960         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2961         _cflags_speed='-O5'
2962         _cflags_size='-O5 -qcompact'
2963     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2964         _type=ccc
2965         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2966         _DEPFLAGS='-M'
2967         _cflags_speed='-fast'
2968         _cflags_size='-O1'
2969         _flags_filter=ccc_flags
2970     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2971         test -d "$sysroot" || die "No valid sysroot specified."
2972         _type=armcc
2973         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
2974         armcc_conf="$PWD/armcc.conf"
2975         $_cc --arm_linux_configure                 \
2976              --arm_linux_config_file="$armcc_conf" \
2977              --configure_sysroot="$sysroot"        \
2978              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2979              die "Error creating armcc configuration file."
2980         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2981         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2982         as_default="${cross_prefix}gcc"
2983         _depflags='-MMD'
2984         _cflags_speed='-O3'
2985         _cflags_size='-Os'
2986     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2987         _type=tms470
2988         _ident=$($_cc -version | head -n1 | tr -s ' ')
2989         _flags='--gcc --abi=eabi -me'
2990         _cc_e='-ppl -fe=$@'
2991         _cc_o='-fe=$@'
2992         _depflags='-ppa -ppd=$(@:.o=.d)'
2993         _cflags_speed='-O3 -mf=5'
2994         _cflags_size='-O3 -mf=2'
2995         _flags_filter=tms470_flags
2996     elif $_cc -v 2>&1 | grep -q clang; then
2997         _type=clang
2998         _ident=$($_cc --version | head -n1)
2999         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3000         _cflags_speed='-O3'
3001         _cflags_size='-Os'
3002     elif $_cc -V 2>&1 | grep -q Sun; then
3003         _type=suncc
3004         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3005         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3006         _DEPFLAGS='-xM1 -xc99'
3007         _ldflags='-std=c99'
3008         _cflags_speed='-O5'
3009         _cflags_size='-O5 -xspace'
3010         _flags_filter=suncc_flags
3011     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3012         _type=pathscale
3013         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3014         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3015         _cflags_speed='-O2'
3016         _cflags_size='-Os'
3017         _flags_filter='filter_out -Wdisabled-optimization'
3018     elif $_cc -v 2>&1 | grep -q Open64; then
3019         _type=open64
3020         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3021         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3022         _cflags_speed='-O2'
3023         _cflags_size='-Os'
3024         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3025     elif $_cc -V 2>&1 | grep -q Portland; then
3026         _type=pgi
3027         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3028         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3029         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3030         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3031         _cflags_noopt="-O1"
3032         _flags_filter=pgi_flags
3033     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3034         _type=armasm
3035         _ident=$($_cc | head -n1)
3036         # 4509: "This form of conditional instruction is deprecated"
3037         _flags="-nologo -ignore 4509"
3038         _flags_filter=armasm_flags
3039     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3040         _type=msvc
3041         _ident=$($_cc 2>&1 | head -n1)
3042         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3043         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3044         _cflags_speed="-O2"
3045         _cflags_size="-O1"
3046         if $_cc -nologo- 2>&1 | grep -q Linker; then
3047             _ld_o='-out:$@'
3048         else
3049             _ld_o='-Fe$@'
3050         fi
3051         _cc_o='-Fo$@'
3052         _cc_e='-P -Fi$@'
3053         _flags_filter=msvc_flags
3054         _ld_lib='lib%.a'
3055         _ld_path='-libpath:'
3056         _flags='-nologo'
3057         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3058     elif $_cc 2>&1 | grep -q Intel; then
3059         _type=icl
3060         _ident=$($_cc 2>&1 | head -n1)
3061         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3062         # Not only is O3 broken on 13.x+ but it is slower on all previous
3063         # versions (tested) as well.
3064         _cflags_speed="-O2"
3065         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3066         if $_cc 2>&1 | grep -q Linker; then
3067             _ld_o='-out:$@'
3068         else
3069             _ld_o='-Fe$@'
3070         fi
3071         _cc_o='-Fo$@'
3072         _cc_e='-P'
3073         _flags_filter=icl_flags
3074         _ld_lib='lib%.a'
3075         _ld_path='-libpath:'
3076         # -Qdiag-error to make icl error when seeing certain unknown arguments
3077         _flags='-nologo -Qdiag-error:4044,10157'
3078         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3079         # with MSVC which enables it by default.
3080         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3081     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3082         _type=cparser
3083         _ident=$($_cc --version | head -n1)
3084         _depflags='-MMD'
3085         _cflags_speed='-O4'
3086         _cflags_size='-O2'
3087         _flags_filter=cparser_flags
3088     fi
3089
3090     eval ${pfx}_type=\$_type
3091     eval ${pfx}_ident=\$_ident
3092 }
3093
3094 set_ccvars(){
3095     eval ${1}_C=\${_cc_c-\${${1}_C}}
3096     eval ${1}_E=\${_cc_e-\${${1}_E}}
3097     eval ${1}_O=\${_cc_o-\${${1}_O}}
3098
3099     if [ -n "$_depflags" ]; then
3100         eval ${1}_DEPFLAGS=\$_depflags
3101     else
3102         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3103         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3104         eval DEP${1}FLAGS=\$_flags
3105     fi
3106 }
3107
3108 probe_cc cc "$cc"
3109 cflags_filter=$_flags_filter
3110 cflags_speed=$_cflags_speed
3111 cflags_size=$_cflags_size
3112 cflags_noopt=$_cflags_noopt
3113 add_cflags $_flags $_cflags
3114 cc_ldflags=$_ldflags
3115 set_ccvars CC
3116
3117 probe_cc hostcc "$host_cc"
3118 host_cflags_filter=$_flags_filter
3119 add_host_cflags  $_flags $_cflags
3120 set_ccvars HOSTCC
3121
3122 test -n "$cc_type" && enable $cc_type ||
3123     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3124
3125 : ${as_default:=$cc}
3126 : ${dep_cc_default:=$cc}
3127 : ${ld_default:=$cc}
3128 : ${host_ld_default:=$host_cc}
3129 set_default ar as dep_cc ld host_ld
3130
3131 probe_cc as "$as"
3132 asflags_filter=$_flags_filter
3133 add_asflags $_flags $_cflags
3134 set_ccvars AS
3135
3136 probe_cc ld "$ld"
3137 ldflags_filter=$_flags_filter
3138 add_ldflags $_flags $_ldflags
3139 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3140 LD_O=${_ld_o-$LD_O}
3141 LD_LIB=${_ld_lib-$LD_LIB}
3142 LD_PATH=${_ld_path-$LD_PATH}
3143
3144 probe_cc hostld "$host_ld"
3145 host_ldflags_filter=$_flags_filter
3146 add_host_ldflags $_flags $_ldflags
3147 HOSTLD_O=${_ld_o-$HOSTLD_O}
3148
3149 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3150     probe_cc depcc "$dep_cc"
3151     CCDEP=${_DEPCMD:-$DEPCMD}
3152     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3153     DEPCCFLAGS=$_flags
3154 fi
3155
3156 if $ar 2>&1 | grep -q Microsoft; then
3157     arflags="-nologo"
3158     ar_o='-out:$@'
3159 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3160     arflags="rq"
3161     ar_o='$@'
3162 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3163     arflags='-Xany -r -c'
3164     ar_o='$@'
3165 else
3166     arflags="rc"
3167     ar_o='$@'
3168 fi
3169
3170 add_cflags $extra_cflags
3171 add_asflags $extra_cflags
3172
3173 if test -n "$sysroot"; then
3174     case "$cc_type" in
3175         gcc|llvm_gcc|clang)
3176             add_cppflags --sysroot="$sysroot"
3177             add_ldflags --sysroot="$sysroot"
3178         ;;
3179         tms470)
3180             add_cppflags -I"$sysinclude"
3181             add_ldflags  --sysroot="$sysroot"
3182         ;;
3183     esac
3184 fi
3185
3186 if test "$cpu" = host; then
3187     enabled cross_compile &&
3188         die "--cpu=host makes no sense when cross-compiling."
3189
3190     case "$cc_type" in
3191         gcc|llvm_gcc)
3192             check_native(){
3193                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3194                 sed -n "/cc1.*$1=/{
3195                             s/.*$1=\\([^ ]*\\).*/\\1/
3196                             p
3197                             q
3198                         }" $TMPE
3199             }
3200             cpu=$(check_native -march || check_native -mcpu)
3201         ;;
3202     esac
3203
3204     test "${cpu:-host}" = host &&
3205         die "--cpu=host not supported with compiler $cc"
3206 fi
3207
3208 # Deal with common $arch aliases
3209 case "$arch" in
3210     aarch64|arm64)
3211         arch="aarch64"
3212     ;;
3213     arm*)
3214         arch="arm"
3215     ;;
3216     mips*|IP*)
3217         arch="mips"
3218     ;;
3219     parisc*|hppa*)
3220         arch="parisc"
3221     ;;
3222     "Power Macintosh"|ppc*|powerpc*)
3223         arch="ppc"
3224     ;;
3225     s390|s390x)
3226         arch="s390"
3227     ;;
3228     sh4|sh)
3229         arch="sh4"
3230     ;;
3231     sun4u|sparc*)
3232         arch="sparc"
3233     ;;
3234     tilegx|tile-gx)
3235         arch="tilegx"
3236     ;;
3237     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3238         arch="x86"
3239     ;;
3240 esac
3241
3242 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3243 enable $arch
3244
3245 # Add processor-specific flags
3246 if enabled aarch64; then
3247
3248     case $cpu in
3249         armv*)
3250             cpuflags="-march=$cpu"
3251         ;;
3252         *)
3253             cpuflags="-mcpu=$cpu"
3254         ;;
3255     esac
3256
3257 elif enabled alpha; then
3258
3259     cpuflags="-mcpu=$cpu"
3260
3261 elif enabled arm; then
3262
3263     check_arm_arch() {
3264         check_cpp_condition stddef.h \
3265             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3266             $cpuflags
3267     }
3268
3269     probe_arm_arch() {
3270         if   check_arm_arch 4;        then echo armv4;
3271         elif check_arm_arch 4T;       then echo armv4t;
3272         elif check_arm_arch 5;        then echo armv5;
3273         elif check_arm_arch 5E;       then echo armv5e;
3274         elif check_arm_arch 5T;       then echo armv5t;
3275         elif check_arm_arch 5TE;      then echo armv5te;
3276         elif check_arm_arch 5TEJ;     then echo armv5te;
3277         elif check_arm_arch 6;        then echo armv6;
3278         elif check_arm_arch 6J;       then echo armv6j;
3279         elif check_arm_arch 6K;       then echo armv6k;
3280         elif check_arm_arch 6Z;       then echo armv6z;
3281         elif check_arm_arch 6ZK;      then echo armv6zk;
3282         elif check_arm_arch 6T2;      then echo armv6t2;
3283         elif check_arm_arch 7;        then echo armv7;
3284         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3285         elif check_arm_arch 7S;       then echo armv7-a;
3286         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3287         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3288         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3289         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3290         fi
3291     }
3292
3293     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3294
3295     case $cpu in
3296         armv*)
3297             cpuflags="-march=$cpu"
3298             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3299         ;;
3300         *)
3301             cpuflags="-mcpu=$cpu"
3302             case $cpu in
3303                 cortex-a*)                               subarch=armv7a  ;;
3304                 cortex-r*)                               subarch=armv7r  ;;
3305                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3306                 arm11*)                                  subarch=armv6   ;;
3307                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3308                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3309                 *)                             subarch=$(probe_arm_arch) ;;
3310             esac
3311         ;;
3312     esac
3313
3314     case "$subarch" in
3315         armv5t*)    enable fast_clz                ;;
3316         armv[6-8]*) enable fast_clz fast_unaligned ;;
3317     esac
3318
3319 elif enabled avr32; then
3320
3321     case $cpu in
3322         ap7[02]0[0-2])
3323             subarch="avr32_ap"
3324             cpuflags="-mpart=$cpu"
3325         ;;
3326         ap)
3327             subarch="avr32_ap"
3328             cpuflags="-march=$cpu"
3329         ;;
3330         uc3[ab]*)
3331             subarch="avr32_uc"
3332             cpuflags="-mcpu=$cpu"
3333         ;;
3334         uc)
3335             subarch="avr32_uc"
3336             cpuflags="-march=$cpu"
3337         ;;
3338     esac
3339
3340 elif enabled bfin; then
3341
3342     cpuflags="-mcpu=$cpu"
3343
3344 elif enabled mips; then
3345
3346     cpuflags="-march=$cpu"
3347
3348 elif enabled ppc; then
3349
3350     disable ldbrx
3351
3352     case $(tolower $cpu) in
3353         601|ppc601|powerpc601)
3354             cpuflags="-mcpu=601"
3355             disable altivec
3356         ;;
3357         603*|ppc603*|powerpc603*)
3358             cpuflags="-mcpu=603"
3359             disable altivec
3360         ;;
3361         604*|ppc604*|powerpc604*)
3362             cpuflags="-mcpu=604"
3363             disable altivec
3364         ;;
3365         g3|75*|ppc75*|powerpc75*)
3366             cpuflags="-mcpu=750"
3367             disable altivec
3368         ;;
3369         g4|745*|ppc745*|powerpc745*)
3370             cpuflags="-mcpu=7450"
3371             disable vsx
3372         ;;
3373         74*|ppc74*|powerpc74*)
3374             cpuflags="-mcpu=7400"
3375             disable vsx
3376         ;;
3377         g5|970|ppc970|powerpc970)
3378             cpuflags="-mcpu=970"
3379             disable vsx
3380         ;;
3381         power[3-6]*)
3382             cpuflags="-mcpu=$cpu"
3383             disable vsx
3384         ;;
3385         power[7-8]*)
3386             cpuflags="-mcpu=$cpu"
3387             enable ldbrx
3388         ;;
3389         cell)
3390             cpuflags="-mcpu=cell"
3391             enable ldbrx
3392             disable vsx
3393         ;;
3394         e500mc)
3395             cpuflags="-mcpu=e500mc"
3396             disable altivec
3397         ;;
3398         e500v2)
3399             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3400             disable altivec
3401             disable dcbzl
3402         ;;
3403         e500)
3404             cpuflags="-mcpu=8540 -mhard-float"
3405             disable altivec
3406             disable dcbzl
3407         ;;
3408     esac
3409
3410 elif enabled sparc; then
3411
3412     case $cpu in
3413         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3414             cpuflags="-mcpu=$cpu"
3415         ;;
3416         ultrasparc*|niagara[234])
3417             cpuflags="-mcpu=$cpu"
3418         ;;
3419     esac
3420
3421 elif enabled x86; then
3422
3423     case $cpu in
3424         i[345]86|pentium)
3425             cpuflags="-march=$cpu"
3426             disable i686
3427             disable mmx
3428         ;;
3429         # targets that do NOT support nopl and conditional mov (cmov)
3430         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3431             cpuflags="-march=$cpu"
3432             disable i686
3433         ;;
3434         # targets that do support nopl and conditional mov (cmov)
3435         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3436             cpuflags="-march=$cpu"
3437             enable i686
3438             enable fast_cmov
3439         ;;
3440         # targets that do support conditional mov but on which it's slow
3441         pentium4|pentium4m|prescott|nocona)
3442             cpuflags="-march=$cpu"
3443             enable i686
3444             disable fast_cmov
3445         ;;
3446     esac
3447
3448 fi
3449
3450 if [ "$cpu" != generic ]; then
3451     add_cflags  $cpuflags
3452     add_asflags $cpuflags
3453 fi
3454
3455 # compiler sanity check
3456 check_exec <<EOF
3457 int main(void){ return 0; }
3458 EOF
3459 if test "$?" != 0; then
3460     echo "$cc is unable to create an executable file."
3461     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3462         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3463         echo "Only do this if you know what cross compiling means."
3464     fi
3465     die "C compiler test failed."
3466 fi
3467
3468 add_cppflags -D_ISOC99_SOURCE
3469 check_cflags -std=c99
3470 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3471 #include <stdlib.h>
3472 EOF
3473 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3474 #include <stdlib.h>
3475 EOF
3476
3477 add_host_cppflags -D_ISOC99_SOURCE
3478 check_host_cflags -std=c99
3479 check_host_cflags -Wall
3480 check_host_cflags -O3
3481
3482 check_64bit(){
3483     arch32=$1
3484     arch64=$2
3485     expr=$3
3486     check_code cc "" "int test[2*($expr) - 1]" &&
3487         subarch=$arch64 || subarch=$arch32
3488 }
3489
3490 case "$arch" in
3491     aarch64|alpha|ia64)
3492         spic=$shared
3493     ;;
3494     mips)
3495         check_64bit mips mips64 '_MIPS_SIM > 1'
3496         spic=$shared
3497     ;;
3498     parisc)
3499         check_64bit parisc parisc64 'sizeof(void *) > 4'
3500         spic=$shared
3501     ;;
3502     ppc)
3503         check_64bit ppc ppc64 'sizeof(void *) > 4'
3504         spic=$shared
3505     ;;
3506     s390)
3507         check_64bit s390 s390x 'sizeof(void *) > 4'
3508         spic=$shared
3509     ;;
3510     sparc)
3511         check_64bit sparc sparc64 'sizeof(void *) > 4'
3512         spic=$shared
3513     ;;
3514     x86)
3515         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3516         if test "$subarch" = "x86_64"; then
3517             spic=$shared
3518         fi
3519     ;;
3520 esac
3521
3522 enable $subarch
3523 enabled spic && enable_weak pic
3524
3525 # OS specific
3526 case $target_os in
3527     aix)
3528         SHFLAGS=-shared
3529         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3530         enabled shared && add_ldflags -Wl,-brtl
3531         ;;
3532     android)
3533         disable symver
3534         enable section_data_rel_ro
3535         SLIB_INSTALL_NAME='$(SLIBNAME)'
3536         SLIB_INSTALL_LINKS=
3537         # soname not set on purpose
3538         SHFLAGS=-shared
3539         ;;
3540     haiku)
3541         prefix_default="/boot/common"
3542         network_extralibs="-lnetwork"
3543         host_libs=
3544         ;;
3545     sunos)
3546         SHFLAGS='-shared -Wl,-h,$$(@F)'
3547         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3548         network_extralibs="-lsocket -lnsl"
3549         # When using suncc to build, the Solaris linker will mark
3550         # an executable with each instruction set encountered by
3551         # the Solaris assembler.  As our libraries contain their own
3552         # guards for processor-specific code, instead suppress
3553         # generation of the HWCAPS ELF section on Solaris x86 only.
3554         enabled_all suncc x86 &&
3555             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3556             add_ldflags -Wl,-M,mapfile
3557         nm_default='nm -P -g'
3558         ;;
3559     netbsd)
3560         disable symver
3561         oss_indev_extralibs="-lossaudio"
3562         oss_outdev_extralibs="-lossaudio"
3563         ;;
3564     openbsd|bitrig)
3565         disable symver
3566         SHFLAGS='-shared'
3567         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3568         SLIB_INSTALL_LINKS=
3569         oss_indev_extralibs="-lossaudio"
3570         oss_outdev_extralibs="-lossaudio"
3571         ;;
3572     dragonfly)
3573         disable symver
3574         ;;
3575     freebsd)
3576         ;;
3577     bsd/os)
3578         add_extralibs -lpoll -lgnugetopt
3579         ;;
3580     darwin)
3581         enabled ppc && add_asflags -force_cpusubtype_ALL
3582         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3583         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3584         add_ldflags -Wl,-dynamic,-search_paths_first
3585         SLIBSUF=".dylib"
3586         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3587         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3588         objformat="macho"
3589         enabled x86_64 && objformat="macho64"
3590         enabled_any pic shared ||
3591             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3592         ;;
3593     mingw32*)
3594         if test $target_os = "mingw32ce"; then
3595             disable network
3596         else
3597             target_os=mingw32
3598         fi
3599         LIBTARGET=i386
3600         if enabled x86_64; then
3601             LIBTARGET="i386:x86-64"
3602         elif enabled arm; then
3603             LIBTARGET=arm-wince
3604         fi
3605         check_ldflags -Wl,--nxcompat
3606         check_ldflags -Wl,--dynamicbase
3607         shlibdir_default="$bindir_default"
3608         SLIBPREF=""
3609         SLIBSUF=".dll"
3610         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3611         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3612         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3613         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3614         SLIB_INSTALL_LINKS=
3615         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3616         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3617         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3618         objformat="win32"
3619         dlltool="${cross_prefix}dlltool"
3620         ranlib=:
3621         enable dos_paths
3622         ;;
3623     win32|win64)
3624         disable symver
3625         if enabled shared; then
3626             # Link to the import library instead of the normal static library
3627             # for shared libs.
3628             LD_LIB='%.lib'
3629             # Cannot build both shared and static libs with MSVC or icl.
3630             disable static
3631         fi
3632         shlibdir_default="$bindir_default"
3633         SLIBPREF=""
3634         SLIBSUF=".dll"
3635         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3636         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3637         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3638         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3639         SLIB_INSTALL_LINKS=
3640         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3641         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3642         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3643         objformat="win32"
3644         ranlib=:
3645         enable dos_paths
3646         ;;
3647     cygwin*)
3648         target_os=cygwin
3649         shlibdir_default="$bindir_default"
3650         SLIBPREF="cyg"
3651         SLIBSUF=".dll"
3652         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3653         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3654         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3655         SLIB_INSTALL_LINKS=
3656         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3657         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3658         objformat="win32"
3659         enable dos_paths
3660         ;;
3661     *-dos|freedos|opendos)
3662         network_extralibs="-lsocket"
3663         objformat="coff"
3664         enable dos_paths
3665         add_cppflags -U__STRICT_ANSI__
3666         ;;
3667     linux)
3668         enable dv1394
3669         enable section_data_rel_ro
3670         ;;
3671     irix*)
3672         target_os=irix
3673         ranlib="echo ignoring ranlib"
3674         ;;
3675     os/2*)
3676         ln_s="cp -f"
3677         objformat="aout"
3678         add_cppflags -D_GNU_SOURCE
3679         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3680         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3681         LIBSUF="_s.a"
3682         SLIBPREF=""
3683         SLIBSUF=".dll"
3684         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3685         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3686         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3687             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3688             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3689             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3690             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3691         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3692             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3693         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3694         enable dos_paths
3695         ;;
3696     gnu/kfreebsd)
3697         add_cppflags -D_BSD_SOURCE
3698         ;;
3699     gnu)
3700         ;;
3701     qnx)
3702         add_cppflags -D_QNX_SOURCE
3703         network_extralibs="-lsocket"
3704         ;;
3705     symbian)
3706         SLIBSUF=".dll"
3707         enable dos_paths
3708         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3709         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3710         add_ldflags -Wl,--target1-abs,--no-undefined \
3711                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3712                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3713         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3714                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3715                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3716         ;;
3717     osf1)
3718         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3719         ;;
3720     minix)
3721         ;;
3722     plan9)
3723         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3724                      -D_REENTRANT_SOURCE        \
3725                      -D_RESEARCH_SOURCE         \
3726                      -DFD_SETSIZE=96            \
3727                      -DHAVE_SOCK_OPTS
3728         add_compat strtod.o strtod=avpriv_strtod
3729         network_extralibs='-lbsd'
3730         exeobjs=compat/plan9/main.o
3731         cp_f='cp'
3732         ;;
3733     none)
3734         ;;
3735     *)
3736         die "Unknown OS '$target_os'."
3737         ;;
3738 esac
3739
3740 # determine libc flavour
3741
3742 probe_libc(){
3743     pfx=$1
3744     pfx_no_=${pfx%_}
3745     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3746     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3747         eval ${pfx}libc_type=uclibc
3748         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3749     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3750         eval ${pfx}libc_type=glibc
3751         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3752     # MinGW headers can be installed on Cygwin, so check for newlib first.
3753     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3754         eval ${pfx}libc_type=newlib
3755         add_${pfx}cppflags -U__STRICT_ANSI__
3756     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3757     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3758         eval ${pfx}libc_type=mingw64
3759         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3760         eval test \$${pfx_no_}cc_type = "gcc" &&
3761             add_${pfx}cppflags -D__printf__=__gnu_printf__
3762     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3763          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3764         eval ${pfx}libc_type=mingw32
3765         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3766             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3767             die "ERROR: MinGW32 runtime version must be >= 3.15."
3768         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3769         eval test \$${pfx_no_}cc_type = "gcc" &&
3770             add_${pfx}cppflags -D__printf__=__gnu_printf__
3771     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3772         eval ${pfx}libc_type=msvcrt
3773         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
3774             if [ "$pfx" = host_ ]; then
3775                 add_host_cppflags -Dsnprintf=_snprintf
3776             else
3777                 add_compat strtod.o strtod=avpriv_strtod
3778                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3779                                              _snprintf=avpriv_snprintf  \
3780                                              vsnprintf=avpriv_vsnprintf
3781             fi
3782         fi
3783         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3784         # 0x601 by default unless something else is set by the user.
3785         # This can easily lead to us detecting functions only present
3786         # in such new versions and producing binaries requiring windows 7.0.
3787         # Therefore explicitly set the default to XP unless the user has
3788         # set something else on the command line.
3789         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3790             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3791     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3792         eval ${pfx}libc_type=klibc
3793     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3794         eval ${pfx}libc_type=bionic
3795     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3796         eval ${pfx}libc_type=solaris
3797         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3798     else
3799         eval ${pfx}libc_type=default
3800         add_${pfx}cppflags -D_DEFAULT_SOURCE
3801     fi
3802 }
3803
3804 probe_libc
3805 test -n "$libc_type" && enable libc_$libc_type
3806 probe_libc host_
3807 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3808
3809 case $libc_type in
3810     bionic)
3811         add_compat strtod.o strtod=avpriv_strtod
3812         ;;
3813 esac
3814
3815 # hacks for compiler/libc/os combinations
3816
3817 if enabled_all tms470 libc_glibc; then
3818     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3819     add_cppflags -D__USER_LABEL_PREFIX__=
3820     add_cppflags -D__builtin_memset=memset
3821     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3822     add_cflags   -pds=48    # incompatible redefinition of macro
3823 fi
3824
3825 if enabled_all ccc libc_glibc; then
3826     add_ldflags -Wl,-z,now  # calls to libots crash without this
3827 fi
3828
3829 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3830     add_cppflags '-I\$(SRC_PATH)/compat/float'
3831
3832 esc(){
3833     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3834 }
3835
3836 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3837
3838 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3839
3840 set_default $PATHS_LIST
3841 set_default nm
3842
3843 # we need to build at least one lib type
3844 if ! enabled_any static shared; then
3845     cat <<EOF
3846 At least one library type must be built.
3847 Specify --enable-static to build the static libraries or --enable-shared to
3848 build the shared libraries as well. To only build the shared libraries specify
3849 --disable-static in addition to --enable-shared.
3850 EOF
3851     exit 1;
3852 fi
3853
3854 die_license_disabled() {
3855     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3856 }
3857
3858 die_license_disabled gpl libcdio
3859 die_license_disabled gpl libx264
3860 die_license_disabled gpl libx265
3861 die_license_disabled gpl libxavs
3862 die_license_disabled gpl libxvid
3863 die_license_disabled gpl x11grab
3864
3865 die_license_disabled nonfree libfaac
3866 die_license_disabled nonfree libfdk_aac
3867 die_license_disabled nonfree nvenc
3868 die_license_disabled nonfree openssl
3869
3870 die_license_disabled version3 libopencore_amrnb
3871 die_license_disabled version3 libopencore_amrwb
3872 die_license_disabled version3 libvo_aacenc
3873 die_license_disabled version3 libvo_amrwbenc
3874
3875 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3876
3877 disabled optimizations || check_cflags -fomit-frame-pointer
3878
3879 enable_weak_pic() {
3880     disabled pic && return
3881     enable pic
3882     add_cppflags -DPIC
3883     case "$target_os" in
3884     mingw*|cygwin*)
3885         ;;
3886     *)
3887         add_cflags -fPIC
3888         ;;
3889     esac
3890     add_asflags  -fPIC
3891 }
3892
3893 enabled pic && enable_weak_pic
3894
3895 check_cc <<EOF || die "Symbol mangling check failed."
3896 int ff_extern;
3897 EOF
3898 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3899 extern_prefix=${sym%%ff_extern*}
3900
3901 check_cc <<EOF && enable_weak inline_asm
3902 void foo(void) { __asm__ volatile ("" ::); }
3903 EOF
3904
3905 _restrict=
3906 for restrict_keyword in restrict __restrict__ __restrict; do
3907     check_cc <<EOF && _restrict=$restrict_keyword && break
3908 void foo(char * $restrict_keyword p);
3909 EOF
3910 done
3911
3912 check_cc <<EOF && enable pragma_deprecated
3913 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3914 EOF
3915
3916 check_cc <<EOF && enable attribute_packed
3917 struct { int x; } __attribute__((packed)) x;
3918 EOF
3919
3920 check_cc <<EOF && enable attribute_may_alias
3921 union { int x; } __attribute__((may_alias)) x;
3922 EOF
3923
3924 check_cc <<EOF || die "endian test failed"
3925 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3926 EOF
3927 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3928
3929 check_gas() {
3930     log "check_gas using '$as' as AS"
3931     # :vararg is used on aarch64, arm and ppc altivec
3932     check_as <<EOF || return 1
3933 .macro m n, y:vararg=0
3934 \n: .int \y
3935 .endm
3936 m x
3937 EOF
3938     # .altmacro is only used in arm asm
3939     ! enabled arm || check_as <<EOF || return 1
3940 .altmacro
3941 EOF
3942     enable gnu_as
3943     return 0
3944 }
3945
3946 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
3947     nogas=:
3948     enabled_any arm aarch64 && nogas=die
3949     enabled_all ppc altivec && nogas=warn
3950     as_noop=-v
3951
3952     case $as_type in
3953         arm*) gaspp_as_type=armasm; as_noop=-h ;;
3954         gcc)  gaspp_as_type=gas ;;
3955         *)    gaspp_as_type=$as_type ;;
3956     esac
3957
3958     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
3959
3960     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
3961         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
3962
3963     if ! check_gas ; then
3964         as=${gas:=$as}
3965         check_gas || \
3966             $nogas "GNU assembler not found, install/update gas-preprocessor"
3967     fi
3968
3969     check_as <<EOF && enable as_func
3970 .func test
3971 .endfunc
3972 EOF
3973 fi
3974
3975 check_inline_asm inline_asm_labels '"1:\n"'
3976
3977 if enabled aarch64; then
3978     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3979     # internal assembler in clang 3.3 does not support this instruction
3980     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3981     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3982
3983     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3984
3985 elif enabled alpha; then
3986
3987     check_cflags -mieee
3988
3989 elif enabled arm; then
3990
3991     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3992     enabled thumb && check_cflags -mthumb || check_cflags -marm
3993
3994     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3995         enable vfp_args
3996     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3997         case "${cross_prefix:-$cc}" in
3998             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3999             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4000 __asm__ (".eabi_attribute 28, 1");
4001 int main(void) { return 0; }
4002 EOF
4003         esac
4004         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4005     fi
4006
4007     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4008     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4009     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4010     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4011     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4012     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4013
4014     [ $target_os = linux ] || [ $target_os = android ] ||
4015         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4016             $ARCH_EXT_LIST_ARM
4017
4018     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4019
4020     check_as <<EOF && enable as_dn_directive
4021 ra .dn d0.i16
4022 .unreq ra
4023 EOF
4024
4025     # llvm's integrated assembler supports .object_arch from llvm 3.5
4026     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4027 .object_arch armv4
4028 EOF
4029
4030     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4031
4032 elif enabled mips; then
4033
4034     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4035
4036 elif enabled parisc; then
4037
4038     if enabled gcc; then
4039         case $($cc -dumpversion) in
4040             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4041         esac
4042     fi
4043
4044 elif enabled ppc; then
4045
4046     enable local_aligned_8 local_aligned_16
4047
4048     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4049     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4050     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4051     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4052
4053     # AltiVec flags: The FSF version of GCC differs from the Apple version
4054     if enabled altivec; then
4055         check_cflags -maltivec -mabi=altivec &&
4056         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4057         check_cflags -faltivec
4058
4059         # check if our compiler supports Motorola AltiVec C API
4060         check_cc <<EOF || disable altivec
4061 $inc_altivec_h
4062 int main(void) {
4063     vector signed int v1 = (vector signed int) { 0 };
4064     vector signed int v2 = (vector signed int) { 1 };
4065     v1 = vec_add(v1, v2);
4066     return 0;
4067 }
4068 EOF
4069
4070         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4071     fi
4072
4073     if enabled vsx; then
4074         check_cflags -mvsx &&
4075         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4076     fi
4077
4078     if enabled power8; then
4079         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4080     fi
4081
4082 elif enabled x86; then
4083
4084     check_builtin rdtsc    intrin.h   "__rdtsc()"
4085     check_builtin mm_empty mmintrin.h "_mm_empty()"
4086
4087     enable local_aligned_8 local_aligned_16
4088
4089     # check whether EBP is available on x86
4090     # As 'i' is stored on the stack, this program will crash
4091     # if the base pointer is used to access it because the
4092     # base pointer is cleared in the inline assembly code.
4093     check_exec_crash <<EOF && enable ebp_available
4094 volatile int i=0;
4095 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4096 return i;
4097 EOF
4098
4099     # check whether EBX is available on x86
4100     check_inline_asm ebx_available '""::"b"(0)' &&
4101         check_inline_asm ebx_available '"":::"%ebx"'
4102
4103     # check whether xmm clobbers are supported
4104     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4105
4106     # check whether binutils is new enough to compile SSSE3/MMXEXT
4107     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4108     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4109
4110     if ! disabled_any asm mmx yasm; then
4111         if check_cmd $yasmexe --version; then
4112             enabled x86_64 && yasm_extra="-m amd64"
4113             yasm_debug="-g dwarf2"
4114         elif check_cmd nasm -v; then
4115             yasmexe=nasm
4116             yasm_debug="-g -F dwarf"
4117             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4118         fi
4119
4120         YASMFLAGS="-f $objformat $yasm_extra"
4121         enabled pic               && append YASMFLAGS "-DPIC"
4122         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4123         case "$objformat" in
4124             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4125         esac
4126
4127         check_yasm "movbe ecx, [5]" && enable yasm ||
4128             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4129         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4130         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4131         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4132         check_yasm "CPU amdnop" || disable cpunop
4133     fi
4134
4135     case "$cpu" in
4136         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4137             disable fast_clz
4138         ;;
4139     esac
4140
4141 fi
4142
4143 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4144
4145 check_ldflags -Wl,--as-needed
4146
4147 if check_func dlopen; then
4148     ldl=
4149 elif check_func dlopen -ldl; then
4150     ldl=-ldl
4151 fi
4152
4153 if ! disabled network; then
4154     check_func getaddrinfo $network_extralibs
4155     check_func getservbyport $network_extralibs
4156     check_func inet_aton $network_extralibs
4157
4158     check_type netdb.h "struct addrinfo"
4159     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4160     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4161     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4162     check_type poll.h "struct pollfd"
4163     check_type netinet/sctp.h "struct sctp_event_subscribe"
4164     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4165     check_type netinet/in.h "struct sockaddr_in6"
4166     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4167     check_type "sys/types.h sys/socket.h" socklen_t
4168
4169     # Prefer arpa/inet.h over winsock2
4170     if check_header arpa/inet.h ; then
4171         check_func closesocket
4172     elif check_header winsock2.h ; then
4173         check_func_headers winsock2.h closesocket -lws2 &&
4174             network_extralibs="-lws2" ||
4175         { check_func_headers winsock2.h closesocket -lws2_32 &&
4176             network_extralibs="-lws2_32"; } || disable winsock2_h network
4177         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4178
4179         check_type ws2tcpip.h socklen_t
4180         check_type ws2tcpip.h "struct addrinfo"
4181         check_type ws2tcpip.h "struct group_source_req"
4182         check_type ws2tcpip.h "struct ip_mreq_source"
4183         check_type ws2tcpip.h "struct ipv6_mreq"
4184         check_type winsock2.h "struct pollfd"
4185         check_struct winsock2.h "struct sockaddr" sa_len
4186         check_type ws2tcpip.h "struct sockaddr_in6"
4187         check_type ws2tcpip.h "struct sockaddr_storage"
4188     else
4189         disable network
4190     fi
4191 fi
4192
4193 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4194 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4195 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4196 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4197
4198 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4199 check_func  ${malloc_prefix}memalign            && enable memalign
4200 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4201
4202 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4203     check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4204
4205 check_func  fcntl
4206 check_func  fork
4207 check_func  gethrtime
4208 check_func  getopt
4209 check_func  getrusage
4210 check_func  gettimeofday
4211 check_func  gmtime_r
4212 check_func  isatty
4213 check_func  localtime_r
4214 check_func  mach_absolute_time
4215 check_func  mkstemp
4216 check_func  mmap
4217 check_func  mprotect
4218 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4219 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4220 check_func  sched_getaffinity
4221 check_func  setrlimit
4222 check_func  strerror_r
4223 check_func  sysconf
4224 check_func  sysctl
4225 check_func  usleep
4226
4227 check_func_headers io.h setmode
4228 check_func_headers stdlib.h getenv
4229
4230 check_func_headers windows.h CoTaskMemFree -lole32
4231 check_func_headers windows.h GetProcessAffinityMask
4232 check_func_headers windows.h GetProcessTimes
4233 check_func_headers windows.h GetSystemTimeAsFileTime
4234 check_func_headers windows.h LoadLibrary
4235 check_func_headers windows.h MapViewOfFile
4236 check_func_headers windows.h SetConsoleTextAttribute
4237 check_func_headers windows.h Sleep
4238 check_func_headers windows.h VirtualAlloc
4239 check_struct windows.h "CONDITION_VARIABLE" Ptr
4240
4241 check_header direct.h
4242 check_header dlfcn.h
4243 check_header d3d11.h
4244 check_header dxva.h
4245 check_header dxva2api.h
4246 check_header io.h
4247 check_header mach/mach_time.h
4248 check_header malloc.h
4249 check_header poll.h
4250 check_header sys/mman.h
4251 check_header sys/param.h
4252 check_header sys/resource.h
4253 check_header sys/select.h
4254 check_header sys/time.h
4255 check_header sys/un.h
4256 check_header unistd.h
4257 check_header valgrind/valgrind.h
4258 check_header vdpau/vdpau.h
4259 check_header vdpau/vdpau_x11.h
4260 check_header VideoDecodeAcceleration/VDADecoder.h
4261 check_header windows.h
4262 check_header X11/extensions/XvMClib.h
4263
4264 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4265 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4266 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4267
4268 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4269
4270 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC"
4271 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4272 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0600
4273
4274 if ! disabled w32threads && ! enabled pthreads; then
4275     check_func_headers "windows.h process.h" _beginthreadex &&
4276         enable w32threads || disable w32threads
4277 fi
4278
4279 # check for some common methods of building with pthread support
4280 # do this before the optional library checks as some of them require pthreads
4281 if ! disabled pthreads && ! enabled w32threads; then
4282     enable pthreads
4283     if check_func pthread_join -pthread; then
4284         add_cflags -pthread
4285         add_extralibs -pthread
4286     elif check_func pthread_join -pthreads; then
4287         add_cflags -pthreads
4288         add_extralibs -pthreads
4289     elif check_func pthread_join -lpthreadGC2; then
4290         add_extralibs -lpthreadGC2
4291     elif check_lib pthread.h pthread_join -lpthread; then
4292         :
4293     elif ! check_func pthread_join; then
4294         disable pthreads
4295     fi
4296 fi
4297
4298 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4299 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4300
4301 check_lib math.h sin -lm && LIBM="-lm"
4302 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4303
4304 atan2f_args=2
4305 ldexpf_args=2
4306 powf_args=2
4307
4308 for func in $MATH_FUNCS; do
4309     eval check_mathfunc $func \${${func}_args:-1}
4310 done
4311
4312 # these are off by default, so fail if requested and not available
4313 enabled avisynth          && { check_lib2 "avisynth/avisynth_c.h windows.h" LoadLibrary ||
4314                                check_lib2 "avxsynth/avxsynth_c.h dlfcn.h" dlopen -ldl   ||
4315                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4316 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4317 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4318 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4319 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4320 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4321 enabled libfdk_aac        && require_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4322 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4323 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4324 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4325                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4326                                done || die "ERROR: libgsm not found"; }
4327 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4328 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
4329 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4330 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4331 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4332 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4333 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
4334 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4335                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4336 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4337 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4338 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4339 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4340 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
4341 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4342 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4343 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4344 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4345 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4346 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4347 enabled libvpx            && require_pkg_config "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version && {
4348     enabled libvpx_vp8_decoder && {
4349         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
4350             disable libvpx_vp8_decoder;
4351     }
4352     enabled libvpx_vp8_encoder && {
4353         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
4354             disable libvpx_vp8_encoder;
4355     }
4356     enabled libvpx_vp9_decoder && {
4357         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
4358             disable libvpx_vp9_decoder;
4359     }
4360     enabled libvpx_vp9_encoder && {
4361         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
4362             disable libvpx_vp9_encoder;
4363     }
4364     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
4365         die "libvpx enabled but no supported decoders found"
4366     fi
4367 }
4368 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4369 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4370 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4371                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4372                                die "ERROR: libx264 version must be >= 0.118."; } &&
4373                              { check_cpp_condition x264.h "X264_MPEG2" &&
4374                                enable libx262; }
4375 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
4376                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
4377                                die "ERROR: libx265 version must be >= 57."; }
4378 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4379 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4380 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4381                                 { ! enabled cross_compile && {
4382                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
4383                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
4384                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
4385                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
4386                                die "ERROR: mmal not found"; }
4387 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4388                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4389                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4390                                die "ERROR: openssl not found"; }
4391
4392 if enabled gnutls; then
4393     { check_lib2 gmp.h mpz_export -lgmp && enable gmp; } ||
4394     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4395 fi
4396
4397 # libdc1394 check
4398 if enabled libdc1394; then
4399     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
4400         enable libdc1394_2; } ||
4401     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4402         enable libdc1394_1; } ||
4403     die "ERROR: No version of libdc1394 found "
4404 fi
4405
4406 if enabled nvenc; then
4407     check_header cuda.h || die "ERROR: cuda.h not found.";
4408     check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found.";
4409     check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 5" ||
4410         die "ERROR: NVENC API version 4 or older is not supported";
4411 fi
4412
4413 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4414     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4415     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4416     enable sdl
4417 fi
4418
4419 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4420 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4421
4422 check_header linux/fb.h
4423 check_header linux/videodev2.h
4424 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4425
4426 check_header sys/videoio.h
4427
4428 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4429 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4430 # w32api 3.12 had it defined wrong
4431 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4432
4433 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4434 { check_header dev/bktr/ioctl_meteor.h &&
4435   check_header dev/bktr/ioctl_bt848.h; } ||
4436 { check_header machine/ioctl_meteor.h &&
4437   check_header machine/ioctl_bt848.h; } ||
4438 { check_header dev/video/meteor/ioctl_meteor.h &&
4439   check_header dev/video/bktr/ioctl_bt848.h; } ||
4440 check_header dev/ic/bt8xx.h
4441
4442 check_header sndio.h
4443 check_header sys/soundcard.h
4444 check_header soundcard.h
4445
4446 enabled_any alsa_indev alsa_outdev &&
4447     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4448
4449 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4450     check_func jack_port_get_latency_range -ljack
4451
4452 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4453
4454 if enabled libcdio; then
4455     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4456     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4457     die "ERROR: No usable libcdio/cdparanoia found"
4458 fi
4459
4460 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4461
4462 if enabled libxcb || enabled x11grab && ! disabled libxcb; then
4463     check_pkg_config xcb-shape xcb/shape.h xcb_shape_rectangles || {
4464         enabled libxcb && die "ERROR: libxcb not found";
4465     } && disable x11grab && enable libxcb
4466
4467     disabled libxcb_shm ||
4468         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
4469             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
4470         } && check_header sys/shm.h && enable libxcb_shm
4471
4472     disabled libxcb_xfixes ||
4473         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
4474             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
4475         } && enable libxcb_xfixes
4476
4477     add_cflags "$xcb_event_cflags $xcb_shm_cflags $xcb_xfixes_cflags"
4478     add_extralibs "$xcb_event_libs $xcb_shm_libs $xcb_xfixes_libs"
4479 fi
4480
4481 if enabled x11grab; then
4482     enabled xlib || die "ERROR: Xlib not found"
4483     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
4484     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
4485 fi
4486
4487 enabled vaapi && enabled xlib &&
4488     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
4489     enable vaapi_x11
4490
4491 enabled vdpau &&
4492     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4493     disable vdpau
4494
4495 enabled vdpau && enabled xlib &&
4496     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4497     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4498     enable vdpau_x11
4499
4500 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4501
4502 # add some useful compiler flags if supported
4503 check_cflags -Wdeclaration-after-statement
4504 check_cflags -Wall
4505 check_cflags -Wdisabled-optimization
4506 check_cflags -Wpointer-arith
4507 check_cflags -Wredundant-decls
4508 check_cflags -Wcast-qual
4509 check_cflags -Wwrite-strings
4510 check_cflags -Wtype-limits
4511 check_cflags -Wundef
4512 check_cflags -Wmissing-prototypes
4513 check_cflags -Wstrict-prototypes
4514 enabled extra_warnings && check_cflags -Winline
4515
4516 check_disable_warning(){
4517     warning_flag=-W${1#-Wno-}
4518     test_cflags $warning_flag && add_cflags $1
4519 }
4520
4521 check_disable_warning -Wno-parentheses
4522 check_disable_warning -Wno-switch
4523 check_disable_warning -Wno-format-zero-length
4524 check_disable_warning -Wno-pointer-sign
4525
4526 # add some linker flags
4527 check_ldflags -Wl,--warn-common
4528 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4529 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
4530 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4531
4532 # add some strip flags
4533 # -wN '..@*' is more selective than -x, but not available everywhere.
4534 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4535
4536 enabled neon_clobber_test &&
4537     check_ldflags -Wl,--wrap,avcodec_open2              \
4538                   -Wl,--wrap,avcodec_decode_audio4      \
4539                   -Wl,--wrap,avcodec_decode_video2      \
4540                   -Wl,--wrap,avcodec_decode_subtitle2   \
4541                   -Wl,--wrap,avcodec_encode_audio2      \
4542                   -Wl,--wrap,avcodec_encode_video2      \
4543                   -Wl,--wrap,avcodec_encode_subtitle    \
4544                   -Wl,--wrap,avresample_convert ||
4545     disable neon_clobber_test
4546
4547 enabled xmm_clobber_test &&
4548     check_ldflags -Wl,--wrap,avcodec_open2              \
4549                   -Wl,--wrap,avcodec_decode_audio4      \
4550                   -Wl,--wrap,avcodec_decode_video2      \
4551                   -Wl,--wrap,avcodec_decode_subtitle2   \
4552                   -Wl,--wrap,avcodec_encode_audio2      \
4553                   -Wl,--wrap,avcodec_encode_video2      \
4554                   -Wl,--wrap,avcodec_encode_subtitle    \
4555                   -Wl,--wrap,avresample_convert         \
4556                   -Wl,--wrap,sws_scale ||
4557     disable xmm_clobber_test
4558
4559 echo "X{};" > $TMPV
4560 if test_ldflags -Wl,--version-script,$TMPV; then
4561     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4562     check_cc <<EOF && enable symver_asm_label
4563 void ff_foo(void) __asm__ ("av_foo@VERSION");
4564 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4565 EOF
4566     check_cc <<EOF && enable symver_gnu_asm
4567 __asm__(".symver ff_foo,av_foo@VERSION");
4568 void ff_foo(void) {}
4569 EOF
4570 fi
4571
4572 if [ -z "$optflags" ]; then
4573     if enabled small; then
4574         optflags=$cflags_size
4575     elif enabled optimizations; then
4576         optflags=$cflags_speed
4577     else
4578         optflags=$cflags_noopt
4579     fi
4580 fi
4581
4582 check_optflags(){
4583     check_cflags "$@"
4584     enabled lto && check_ldflags "$@"
4585 }
4586
4587
4588 if enabled lto; then
4589     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4590     check_cflags  -flto
4591     check_ldflags -flto $cpuflags
4592 fi
4593
4594 check_optflags $optflags
4595 check_optflags -fno-math-errno
4596 check_optflags -fno-signed-zeros
4597
4598 if enabled icc; then
4599     # Just warnings, no remarks
4600     check_cflags -w1
4601     # -wd: Disable following warnings
4602     # 144, 167, 556: -Wno-pointer-sign
4603     # 1292: attribute "foo" ignored
4604     # 1419: external declaration in primary source file
4605     # 10006: ignoring unknown option -fno-signed-zeros
4606     # 10148: ignoring unknown option -Wno-parentheses
4607     # 10156: ignoring option '-W'; no argument required
4608     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4609     # 11030: Warning unknown option --as-needed
4610     # 10156: ignoring option '-export'; no argument required
4611     check_ldflags -wd10156,11030
4612     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4613     enable ebp_available
4614     if enabled x86_32; then
4615         icc_version=$($cc -dumpversion)
4616         test ${icc_version%%.*} -ge 11 &&
4617             check_cflags -falign-stack=maintain-16-byte ||
4618             disable aligned_stack
4619     fi
4620 elif enabled ccc; then
4621     # disable some annoying warnings
4622     add_cflags -msg_disable bitnotint
4623     add_cflags -msg_disable mixfuncvoid
4624     add_cflags -msg_disable nonstandcast
4625     add_cflags -msg_disable unsupieee
4626 elif enabled gcc; then
4627     check_optflags -fno-tree-vectorize
4628     check_cflags -Werror=implicit-function-declaration
4629     check_cflags -Werror=missing-prototypes
4630     check_cflags -Werror=return-type
4631     check_cflags -Werror=declaration-after-statement
4632     check_cflags -Werror=vla
4633     check_cflags -Werror=format-security
4634     check_cflags -fdiagnostics-color=auto
4635     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4636 elif enabled llvm_gcc; then
4637     check_cflags -mllvm -stack-alignment=16
4638 elif enabled clang; then
4639     check_cflags -mllvm -stack-alignment=16
4640     check_cflags -Qunused-arguments
4641     check_cflags -Werror=implicit-function-declaration
4642     check_cflags -Werror=missing-prototypes
4643     check_cflags -Werror=return-type
4644 elif enabled cparser; then
4645     add_cflags -Wno-missing-variable-declarations
4646     add_cflags -Wno-empty-statement
4647 elif enabled armcc; then
4648     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
4649     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
4650     # 2523: use of inline assembly is deprecated
4651     add_cflags -W${armcc_opt},--diag_suppress=2523
4652     add_cflags -W${armcc_opt},--diag_suppress=1207
4653     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4654     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4655     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4656     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4657 elif enabled tms470; then
4658     add_cflags -pds=824 -pds=837
4659     disable inline_asm
4660 elif enabled pathscale; then
4661     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4662 elif enabled_any msvc icl; then
4663     enabled x86_32 && disable aligned_stack
4664     enabled_all x86_32 debug && add_cflags -Oy-
4665     enabled debug && add_ldflags -debug
4666     enable pragma_deprecated
4667     if enabled icl; then
4668         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4669         # (correctly) on icl 13.x.
4670         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4671             add_cflags -Qansi-alias
4672         # icl will pass the inline asm tests but inline asm is currently
4673         # not supported (build will fail)
4674         disable inline_asm
4675     fi
4676     # msvcrt10 x64 incorrectly enables log2, only msvcrt12 (MSVC 2013) onwards actually has log2.
4677     check_cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION >= 12" || disable log2
4678 fi
4679
4680 case $as_type in
4681     clang)
4682         add_asflags -Qunused-arguments
4683     ;;
4684 esac
4685
4686 case $ld_type in
4687     clang)
4688         check_ldflags -Qunused-arguments
4689     ;;
4690 esac
4691
4692 case $target_os in
4693     osf1)
4694         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4695     ;;
4696     plan9)
4697         add_cppflags -Dmain=plan9_main
4698     ;;
4699 esac
4700
4701 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4702
4703 check_deps $CONFIG_LIST       \
4704            $CONFIG_EXTRA      \
4705            $HAVE_LIST         \
4706            $ALL_COMPONENTS    \
4707
4708 enabled_all dxva2 CoTaskMemFree &&
4709     prepend avconv_libs $($ldflags_filter "-lole32") &&
4710     enable dxva2_lib
4711
4712 ! enabled_any memalign posix_memalign aligned_malloc &&
4713     enabled simd_align_16 && enable memalign_hack
4714
4715 map 'enabled $v && intrinsics=${v#intrinsics_}' $INTRINSICS_LIST
4716
4717 for thread in $THREADS_LIST; do
4718     if enabled $thread; then
4719         test -n "$thread_type" &&
4720             die "ERROR: Only one thread type must be selected." ||
4721             thread_type="$thread"
4722     fi
4723 done
4724
4725 enabled zlib && add_cppflags -DZLIB_CONST
4726
4727 # conditional library dependencies, in linking order
4728 enabled movie_filter    && prepend avfilter_deps "avformat avcodec"
4729 enabled resample_filter && prepend avfilter_deps "avresample"
4730 enabled scale_filter    && prepend avfilter_deps "swscale"
4731
4732 enabled opus_decoder    && prepend avcodec_deps "avresample"
4733
4734 expand_deps(){
4735     lib_deps=${1}_deps
4736     eval "deps=\$$lib_deps"
4737     append $lib_deps $(map 'eval echo \$${v}_deps' $deps)
4738     unique $lib_deps
4739 }
4740
4741 map 'expand_deps $v' $LIBRARY_LIST
4742
4743 echo "install prefix            $prefix"
4744 echo "source path               $source_path"
4745 echo "C compiler                $cc"
4746 echo "C library                 $libc_type"
4747 if test "$host_cc" != "$cc"; then
4748     echo "host C compiler           $host_cc"
4749     echo "host C library            $host_libc_type"
4750 fi
4751 echo "ARCH                      $arch ($cpu)"
4752 if test "$build_suffix" != ""; then
4753     echo "build suffix              $build_suffix"
4754 fi
4755 if test "$extra_version" != ""; then
4756     echo "version string suffix     $extra_version"
4757 fi
4758 echo "big-endian                ${bigendian-no}"
4759 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4760 if enabled x86; then
4761     echo "${yasmexe}                      ${yasm-no}"
4762     echo "MMX enabled               ${mmx-no}"
4763     echo "MMXEXT enabled            ${mmxext-no}"
4764     echo "3DNow! enabled            ${amd3dnow-no}"
4765     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4766     echo "SSE enabled               ${sse-no}"
4767     echo "SSSE3 enabled             ${ssse3-no}"
4768     echo "AVX enabled               ${avx-no}"
4769     echo "XOP enabled               ${xop-no}"
4770     echo "FMA3 enabled              ${fma3-no}"
4771     echo "FMA4 enabled              ${fma4-no}"
4772     echo "i686 features enabled     ${i686-no}"
4773     echo "CMOV is fast              ${fast_cmov-no}"
4774     echo "EBX available             ${ebx_available-no}"
4775     echo "EBP available             ${ebp_available-no}"
4776 fi
4777 if enabled aarch64; then
4778     echo "NEON enabled              ${neon-no}"
4779     echo "VFP enabled               ${vfp-no}"
4780 fi
4781 if enabled arm; then
4782     echo "ARMv5TE enabled           ${armv5te-no}"
4783     echo "ARMv6 enabled             ${armv6-no}"
4784     echo "ARMv6T2 enabled           ${armv6t2-no}"
4785     echo "VFP enabled               ${vfp-no}"
4786     echo "NEON enabled              ${neon-no}"
4787 fi
4788 if enabled ppc; then
4789     echo "AltiVec enabled           ${altivec-no}"
4790     echo "VSX enabled               ${vsx-no}"
4791     echo "POWER8 enabled            ${power8-no}"
4792     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4793     echo "dcbzl available           ${dcbzl-no}"
4794 fi
4795 echo "debug symbols             ${debug-no}"
4796 echo "optimize for size         ${small-no}"