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