cosmetic: Reformat ff_h263_decode_mba
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89   --enable-rpath           use rpath when linking programs [USE WITH CARE]
90
91 Licensing options:
92   --enable-gpl             allow use of GPL code, the resulting libs
93                            and binaries will be under GPL [no]
94   --enable-version3        upgrade (L)GPL to version 3 [no]
95   --enable-nonfree         allow use of nonfree code, the resulting libs
96                            and binaries will be unredistributable [no]
97
98 Configuration options:
99   --disable-static         do not build static libraries [no]
100   --enable-shared          build shared libraries [no]
101   --enable-small           optimize for size instead of speed
102   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
103   --enable-gray            enable full grayscale support (slower color)
104   --disable-swscale-alpha  disable alpha channel support in swscale
105   --disable-all            disable building components, libraries and programs
106
107 Program options:
108   --disable-programs       do not build command line programs
109   --disable-avconv         disable avconv build
110   --disable-avplay         disable avplay build
111   --disable-avprobe        disable avprobe build
112   --disable-avserver       deprecated, does nothing
113
114 Component options:
115   --disable-doc            do not build documentation
116   --disable-avdevice       disable libavdevice build
117   --disable-avcodec        disable libavcodec build
118   --disable-avformat       disable libavformat build
119   --disable-avutil         disable libavutil build
120   --disable-swscale        disable libswscale build
121   --disable-avfilter       disable video filter support [no]
122   --disable-avresample     disable libavresample build [no]
123   --disable-pthreads       disable pthreads [auto]
124   --disable-w32threads     disable Win32 threads [auto]
125   --disable-network        disable network support [no]
126   --disable-dct            disable DCT code
127   --disable-error-resilience disable error resilience code
128   --disable-lsp            disable LSP code
129   --disable-lzo            disable LZO decoder code
130   --disable-mdct           disable MDCT code
131   --disable-rdft           disable RDFT code
132   --disable-fft            disable FFT code
133   --disable-faan           disable floating point AAN (I)DCT code
134
135 Hardware accelerators:
136   --enable-d3d11va         enable D3D11VA code
137   --enable-dxva2           enable DXVA2 code
138   --enable-vaapi           enable VAAPI code
139   --enable-vda             enable VDA code
140   --enable-vdpau           enable VDPAU code
141
142 Individual component options:
143   --disable-everything     disable all components listed below
144   --disable-encoder=NAME   disable encoder NAME
145   --enable-encoder=NAME    enable encoder NAME
146   --disable-encoders       disable all encoders
147   --disable-decoder=NAME   disable decoder NAME
148   --enable-decoder=NAME    enable decoder NAME
149   --disable-decoders       disable all decoders
150   --disable-hwaccel=NAME   disable hwaccel NAME
151   --enable-hwaccel=NAME    enable hwaccel NAME
152   --disable-hwaccels       disable all hwaccels
153   --disable-muxer=NAME     disable muxer NAME
154   --enable-muxer=NAME      enable muxer NAME
155   --disable-muxers         disable all muxers
156   --disable-demuxer=NAME   disable demuxer NAME
157   --enable-demuxer=NAME    enable demuxer NAME
158   --disable-demuxers       disable all demuxers
159   --enable-parser=NAME     enable parser NAME
160   --disable-parser=NAME    disable parser NAME
161   --disable-parsers        disable all parsers
162   --enable-bsf=NAME        enable bitstream filter NAME
163   --disable-bsf=NAME       disable bitstream filter NAME
164   --disable-bsfs           disable all bitstream filters
165   --enable-protocol=NAME   enable protocol NAME
166   --disable-protocol=NAME  disable protocol NAME
167   --disable-protocols      disable all protocols
168   --enable-indev=NAME      enable input device NAME
169   --disable-indev=NAME     disable input device NAME
170   --disable-indevs         disable input devices
171   --enable-outdev=NAME     enable output device NAME
172   --disable-outdev=NAME    disable output device NAME
173   --disable-outdevs        disable output devices
174   --disable-devices        disable all devices
175   --enable-filter=NAME     enable filter NAME
176   --disable-filter=NAME    disable filter NAME
177   --disable-filters        disable all filters
178
179 External library support:
180   --enable-avisynth        enable reading of AviSynth script files [no]
181   --enable-bzlib           enable bzlib [autodetect]
182   --enable-frei0r          enable frei0r video filtering
183   --enable-gnutls          enable gnutls [no]
184   --enable-libbs2b         enable bs2b DSP library [no]
185   --enable-libcdio         enable audio CD grabbing with libcdio
186   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
187                            and libraw1394 [no]
188   --enable-libdcadec       enable DCA decoding via libdcadec [no]
189   --enable-libfaac         enable AAC encoding via libfaac [no]
190   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
191   --enable-libfreetype     enable libfreetype [no]
192   --enable-libgsm          enable GSM de/encoding via libgsm [no]
193   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
194   --enable-libmfx          enable HW acceleration through libmfx
195   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
196   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
197   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
198   --enable-libopencv       enable video filtering via libopencv [no]
199   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
200   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
201   --enable-libopus         enable Opus de/encoding via libopus [no]
202   --enable-libpulse        enable Pulseaudio input via libpulse [no]
203   --enable-librtmp         enable RTMP[E] support via librtmp [no]
204   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
205   --enable-libsnappy       enable Snappy compression [no]
206   --enable-libspeex        enable Speex de/encoding via libspeex [no]
207   --enable-libtheora       enable Theora encoding via libtheora [no]
208   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
209   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
210   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
211   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
212   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
213   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
214   --enable-libwebp         enable WebP encoding via libwebp [no]
215   --enable-libx264         enable H.264 encoding via x264 [no]
216   --enable-libx265         enable HEVC encoding via x265 [no]
217   --enable-libxavs         enable AVS encoding via xavs [no]
218   --enable-libxcb          enable X11 grabbing using XCB [no]
219   --enable-libxcb-shm      enable X11 grabbing shm communication [auto]
220   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [auto]
221   --enable-libxvid         enable Xvid encoding via xvidcore,
222                            native MPEG-4/Xvid encoder exists [no]
223   --enable-mmal            enable decoding via MMAL [no]
224   --enable-nvenc           enable encoding via NVENC [no]
225   --enable-openssl         enable openssl [no]
226   --enable-x11grab         enable X11 grabbing (legacy) [no]
227   --enable-zlib            enable zlib [autodetect]
228
229 Toolchain options:
230   --arch=ARCH              select architecture [$arch]
231   --cpu=CPU                select the minimum required CPU (affects
232                            instruction selection, may crash on older CPUs)
233   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
234   --enable-cross-compile   assume a cross-compiler is used
235   --sysroot=PATH           root of cross-build tree
236   --sysinclude=PATH        location of cross-build system headers
237   --target-os=OS           compiler targets OS [$target_os]
238   --target-exec=CMD        command to run executables on target
239   --target-path=DIR        path to view of build directory on target
240   --target-samples=DIR     path to samples directory on target
241   --toolchain=NAME         set tool defaults according to NAME
242   --nm=NM                  use nm tool
243   --ar=AR                  use archive tool AR [$ar_default]
244   --as=AS                  use assembler AS [$as_default]
245   --cc=CC                  use C compiler CC [$cc_default]
246   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
247   --ld=LD                  use linker LD
248   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
249   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
250   --host-cc=HOSTCC         use host C compiler HOSTCC
251   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
252   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
253   --host-ld=HOSTLD         use host linker HOSTLD
254   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
255   --host-libs=HLIBS        use libs HLIBS when linking for host
256   --host-os=OS             compiler host OS [$target_os]
257   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
258   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
259   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
260   --extra-libs=ELIBS       add ELIBS [$ELIBS]
261   --extra-version=STRING   version string suffix []
262   --optflags=OPTFLAGS      override optimization-related compiler flags
263   --build-suffix=SUFFIX    library name suffix []
264   --enable-pic             build position-independent code
265   --enable-thumb           compile for Thumb instruction set
266   --enable-lto             use link-time optimization
267   --env="ENV=override"     override the environment variables
268
269 Advanced options (experts only):
270   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
271   --disable-symver         disable symbol versioning
272   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
273   --disable-safe-bitstream-reader
274                            disable buffer boundary checking in bitreaders
275                            (faster, but may crash)
276   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
277   --enable-sram            allow use of on-chip SRAM
278
279 Optimization options (experts only):
280   --disable-asm            disable all assembly optimizations
281   --disable-altivec        disable AltiVec optimizations
282   --disable-vsx            disable VSX optimizations
283   --disable-power8         disable POWER8 optimizations
284   --disable-amd3dnow       disable 3DNow! optimizations
285   --disable-amd3dnowext    disable 3DNow! extended optimizations
286   --disable-mmx            disable MMX optimizations
287   --disable-mmxext         disable MMXEXT optimizations
288   --disable-sse            disable SSE optimizations
289   --disable-sse2           disable SSE2 optimizations
290   --disable-sse3           disable SSE3 optimizations
291   --disable-ssse3          disable SSSE3 optimizations
292   --disable-sse4           disable SSE4 optimizations
293   --disable-sse42          disable SSE4.2 optimizations
294   --disable-avx            disable AVX optimizations
295   --disable-xop            disable XOP optimizations
296   --disable-fma3           disable FMA3 optimizations
297   --disable-fma4           disable FMA4 optimizations
298   --disable-avx2           disable AVX2 optimizations
299   --disable-armv5te        disable armv5te optimizations
300   --disable-armv6          disable armv6 optimizations
301   --disable-armv6t2        disable armv6t2 optimizations
302   --disable-vfp            disable VFP optimizations
303   --disable-neon           disable NEON optimizations
304   --disable-inline-asm     disable use of inline assembly
305   --disable-yasm           disable use of nasm/yasm assembly
306
307 Developer options (useful when working on Libav itself):
308   --disable-debug          disable debugging symbols
309   --enable-debug=LEVEL     set the debug level [$debuglevel]
310   --disable-optimizations  disable compiler optimizations
311   --enable-extra-warnings  enable more compiler warnings
312   --samples=PATH           location of test samples for FATE, if not set use
313                            \$LIBAV_SAMPLES at make invocation time.
314   --enable-neon-clobber-test check NEON registers for clobbering (should be
315                            used only for debugging purposes)
316   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
317                            should be used only for debugging purposes)
318   --enable-random          randomly enable/disable components
319   --disable-random
320   --enable-random=LIST     randomly enable/disable specific components or
321   --disable-random=LIST    component groups. LIST is a comma-separated list
322                            of NAME[:PROB] entries where NAME is a component
323                            (group) and PROB the probability associated with
324                            NAME (default 0.5).
325   --random-seed=VALUE      seed value for --enable/disable-random
326   --disable-valgrind-backtrace do not print a backtrace under Valgrind
327                            (only applies to --disable-optimizations builds)
328
329 NOTE: Object files are built at the place where configure is launched.
330 EOF
331   exit 0
332 }
333
334 quotes='""'
335
336 log(){
337     echo "$@" >> $logfile
338 }
339
340 log_file(){
341     log BEGIN $1
342     pr -n -t $1 >> $logfile
343     log END $1
344 }
345
346 echolog(){
347     log "$@"
348     echo "$@"
349 }
350
351 warn(){
352     log "WARNING: $*"
353     WARNINGS="${WARNINGS}WARNING: $*\n"
354 }
355
356 die(){
357     echolog "$@"
358     cat <<EOF
359
360 If you think configure made a mistake, make sure you are using the latest
361 version from Git.  If the latest version fails, report the problem to the
362 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
363 EOF
364     if disabled logging; then
365         cat <<EOF
366 Rerun configure with logging enabled (do not use --disable-logging), and
367 include the log this produces with your report.
368 EOF
369     else
370         cat <<EOF
371 Include the log file "$logfile" produced by configure as this will help
372 solving the problem.
373 EOF
374     fi
375     exit 1
376 }
377
378 # Avoid locale weirdness, besides we really just want to translate ASCII.
379 toupper(){
380     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
381 }
382
383 tolower(){
384     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
385 }
386
387 c_escape(){
388     echo "$*" | sed 's/["\\]/\\\0/g'
389 }
390
391 sh_quote(){
392     v=$(echo "$1" | sed "s/'/'\\\\''/g")
393     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
394     echo "$v"
395 }
396
397 cleanws(){
398     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
399 }
400
401 filter(){
402     pat=$1
403     shift
404     for v; do
405         eval "case $v in $pat) echo $v ;; esac"
406     done
407 }
408
409 filter_out(){
410     pat=$1
411     shift
412     for v; do
413         eval "case $v in $pat) ;; *) echo $v ;; esac"
414     done
415 }
416
417 map(){
418     m=$1
419     shift
420     for v; do eval $m; done
421 }
422
423 add_suffix(){
424     suffix=$1
425     shift
426     for v; do echo ${v}${suffix}; done
427 }
428
429 set_all(){
430     value=$1
431     shift
432     for var in $*; do
433         eval $var=$value
434     done
435 }
436
437 set_weak(){
438     value=$1
439     shift
440     for var; do
441         eval : \${$var:=$value}
442     done
443 }
444
445 sanitize_var_name(){
446     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
447 }
448
449 set_safe(){
450     var=$1
451     shift
452     eval $(sanitize_var_name "$var")='$*'
453 }
454
455 get_safe(){
456     eval echo \$$(sanitize_var_name "$1")
457 }
458
459 pushvar(){
460     for pvar in $*; do
461         eval level=\${${pvar}_level:=0}
462         eval ${pvar}_${level}="\$$pvar"
463         eval ${pvar}_level=$(($level+1))
464     done
465 }
466
467 popvar(){
468     for pvar in $*; do
469         eval level=\${${pvar}_level:-0}
470         test $level = 0 && continue
471         eval level=$(($level-1))
472         eval $pvar="\${${pvar}_${level}}"
473         eval ${pvar}_level=$level
474         eval unset ${pvar}_${level}
475     done
476 }
477
478 enable(){
479     set_all yes $*
480 }
481
482 disable(){
483     set_all no $*
484 }
485
486 enable_weak(){
487     set_weak yes $*
488 }
489
490 disable_weak(){
491     set_weak no $*
492 }
493
494 enable_safe(){
495     for var; do
496         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
497     done
498 }
499
500 disable_safe(){
501     for var; do
502         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
503     done
504 }
505
506 do_enable_deep(){
507     for var; do
508         enabled $var && continue
509         eval sel="\$${var}_select"
510         eval sgs="\$${var}_suggest"
511         pushvar var sgs
512         enable_deep $sel
513         popvar sgs
514         enable_deep_weak $sgs
515         popvar var
516     done
517 }
518
519 enable_deep(){
520     do_enable_deep $*
521     enable $*
522 }
523
524 enable_deep_weak(){
525     for var; do
526         disabled $var && continue
527         pushvar var
528         do_enable_deep $var
529         popvar var
530         enable_weak $var
531     done
532 }
533
534 enabled(){
535     test "${1#!}" = "$1" && op== || op=!=
536     eval test "x\$${1#!}" $op "xyes"
537 }
538
539 disabled(){
540     test "${1#!}" = "$1" && op== || op=!=
541     eval test "x\$${1#!}" $op "xno"
542 }
543
544 enabled_all(){
545     for opt; do
546         enabled $opt || return 1
547     done
548 }
549
550 disabled_all(){
551     for opt; do
552         disabled $opt || return 1
553     done
554 }
555
556 enabled_any(){
557     for opt; do
558         enabled $opt && return 0
559     done
560 }
561
562 disabled_any(){
563     for opt; do
564         disabled $opt && return 0
565     done
566     return 1
567 }
568
569 set_default(){
570     for opt; do
571         eval : \${$opt:=\$${opt}_default}
572     done
573 }
574
575 is_in(){
576     value=$1
577     shift
578     for var in $*; do
579         [ $var = $value ] && return 0
580     done
581     return 1
582 }
583
584 do_check_deps(){
585     for cfg; do
586         cfg="${cfg#!}"
587         enabled ${cfg}_checking && die "Circular dependency for $cfg."
588         disabled ${cfg}_checking && continue
589         enable ${cfg}_checking
590         append allopts $cfg
591
592         eval dep_all="\$${cfg}_deps"
593         eval dep_any="\$${cfg}_deps_any"
594         eval dep_sel="\$${cfg}_select"
595         eval dep_sgs="\$${cfg}_suggest"
596         eval dep_ifa="\$${cfg}_if"
597         eval dep_ifn="\$${cfg}_if_any"
598
599         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
600         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
601         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
602
603         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
604         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
605         enabled_all  $dep_all || disable $cfg
606         enabled_any  $dep_any || disable $cfg
607         disabled_any $dep_sel && disable $cfg
608
609         if enabled $cfg; then
610             enable_deep $dep_sel
611             enable_deep_weak $dep_sgs
612         fi
613
614         disable ${cfg}_checking
615     done
616 }
617
618 check_deps(){
619     unset allopts
620
621     do_check_deps "$@"
622
623     for cfg in $allopts; do
624         enabled $cfg || continue
625         eval dep_extralibs="\$${cfg}_extralibs"
626         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
627     done
628 }
629
630 print_config(){
631     pfx=$1
632     files=$2
633     shift 2
634     map 'eval echo "$v \${$v:-no}"' "$@" |
635     awk "BEGIN { split(\"$files\", files) }
636         {
637             c = \"$pfx\" toupper(\$1);
638             v = \$2;
639             sub(/yes/, 1, v);
640             sub(/no/,  0, v);
641             for (f in files) {
642                 file = files[f];
643                 if (file ~ /\\.h\$/) {
644                     printf(\"#define %s %d\\n\", c, v) >>file;
645                 } else if (file ~ /\\.asm\$/) {
646                     printf(\"%%define %s %d\\n\", c, v) >>file;
647                 } else if (file ~ /\\.mak\$/) {
648                     n = -v ? \"\" : \"!\";
649                     printf(\"%s%s=yes\\n\", n, c) >>file;
650                 }
651             }
652         }"
653 }
654
655 print_enabled(){
656     suf=$1
657     shift
658     for v; do
659         enabled $v && printf "%s\n" ${v%$suf};
660     done
661 }
662
663 append(){
664     var=$1
665     shift
666     eval "$var=\"\$$var $*\""
667 }
668
669 prepend(){
670     var=$1
671     shift
672     eval "$var=\"$* \$$var\""
673 }
674
675 unique(){
676     var=$1
677     uniq_list=""
678     for tok in $(eval echo \$$var); do
679         uniq_list="$(filter_out $tok $uniq_list) $tok"
680     done
681     eval "$var=\"${uniq_list}\""
682 }
683
684 add_cppflags(){
685     append CPPFLAGS "$@"
686 }
687
688 add_cflags(){
689     append CFLAGS $($cflags_filter "$@")
690 }
691
692 add_asflags(){
693     append ASFLAGS $($asflags_filter "$@")
694 }
695
696 add_ldflags(){
697     append LDFLAGS $($ldflags_filter "$@")
698 }
699
700 add_ldexeflags(){
701     append LDEXEFLAGS $($ldflags_filter "$@")
702 }
703
704 add_stripflags(){
705     append STRIPFLAGS "$@"
706 }
707
708 add_extralibs(){
709     prepend extralibs $($ldflags_filter "$@")
710 }
711
712 add_host_cppflags(){
713     append host_cppflags "$@"
714 }
715
716 add_host_cflags(){
717     append host_cflags $($host_cflags_filter "$@")
718 }
719
720 add_host_ldflags(){
721     append host_ldflags $($host_ldflags_filter "$@")
722 }
723
724 add_compat(){
725     append compat_objs $1
726     shift
727     map 'add_cppflags -D$v' "$@"
728 }
729
730 check_cmd(){
731     log "$@"
732     "$@" >> $logfile 2>&1
733 }
734
735 cc_o(){
736     eval printf '%s\\n' $CC_O
737 }
738
739 cc_e(){
740     eval printf '%s\\n' $CC_E
741 }
742
743 check_cc(){
744     log check_cc "$@"
745     cat > $TMPC
746     log_file $TMPC
747     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
748 }
749
750 check_cpp(){
751     log check_cpp "$@"
752     cat > $TMPC
753     log_file $TMPC
754     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
755 }
756
757 as_o(){
758     eval printf '%s\\n' $AS_O
759 }
760
761 check_as(){
762     log check_as "$@"
763     cat > $TMPS
764     log_file $TMPS
765     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
766 }
767
768 check_inline_asm(){
769     log check_inline_asm "$@"
770     name="$1"
771     code="$2"
772     shift 2
773     disable $name
774     check_cc "$@" <<EOF && enable $name
775 void foo(void){ __asm__ volatile($code); }
776 EOF
777 }
778
779 check_insn(){
780     log check_insn "$@"
781     check_inline_asm ${1}_inline "\"$2\""
782     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
783 }
784
785 check_yasm(){
786     log check_yasm "$@"
787     echo "$1" > $TMPS
788     log_file $TMPS
789     shift 1
790     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
791 }
792
793 ld_o(){
794     eval printf '%s\\n' $LD_O
795 }
796
797 check_ld(){
798     log check_ld "$@"
799     flags=$(filter_out '-l*' "$@")
800     libs=$(filter '-l*' "$@")
801     check_cc $($cflags_filter $flags) || return
802     flags=$($ldflags_filter $flags)
803     libs=$($ldflags_filter $libs)
804     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
805 }
806
807 print_include(){
808     hdr=$1
809     test "${hdr%.h}" = "${hdr}" &&
810         echo "#include $hdr"    ||
811         echo "#include <$hdr>"
812 }
813
814 check_code(){
815     log check_code "$@"
816     check=$1
817     headers=$2
818     code=$3
819     shift 3
820     {
821         for hdr in $headers; do
822             print_include $hdr
823         done
824         echo "int main(void) { $code; return 0; }"
825     } | check_$check "$@"
826 }
827
828 check_cppflags(){
829     log check_cppflags "$@"
830     check_cc "$@" <<EOF && append CPPFLAGS "$@"
831 int x;
832 EOF
833 }
834
835 test_cflags(){
836     log test_cflags "$@"
837     set -- $($cflags_filter "$@")
838     check_cc "$@" <<EOF
839 int x;
840 EOF
841 }
842
843 check_cflags(){
844     log check_cflags "$@"
845     test_cflags "$@" && add_cflags "$@"
846 }
847
848 test_ldflags(){
849     log test_ldflags "$@"
850     check_ld "$@" <<EOF
851 int main(void){ return 0; }
852 EOF
853 }
854
855 check_ldflags(){
856     log check_ldflags "$@"
857     test_ldflags "$@" && add_ldflags "$@"
858 }
859
860 test_stripflags(){
861     log test_stripflags "$@"
862     # call check_cc to get a fresh TMPO
863     check_cc <<EOF
864 int main(void) { return 0; }
865 EOF
866     check_cmd $strip $STRIPFLAGS "$@" $TMPO
867 }
868
869 check_stripflags(){
870     log check_stripflags "$@"
871     test_stripflags "$@" && add_stripflags "$@"
872 }
873
874 check_header(){
875     log check_header "$@"
876     header=$1
877     shift
878     disable_safe $header
879     check_cpp "$@" <<EOF && enable_safe $header
880 #include <$header>
881 int x;
882 EOF
883 }
884
885 check_func(){
886     log check_func "$@"
887     func=$1
888     shift
889     disable $func
890     check_ld "$@" <<EOF && enable $func
891 extern int $func();
892 int main(void){ $func(); }
893 EOF
894 }
895
896 check_mathfunc(){
897     log check_mathfunc "$@"
898     func=$1
899     narg=$2
900     shift 2
901     test $narg = 2 && args="f, g" || args="f"
902     disable $func
903     check_ld "$@" <<EOF && enable $func
904 #include <math.h>
905 float foo(float f, float g) { return $func($args); }
906 int main(void){ return 0; }
907 EOF
908 }
909
910 check_func_headers(){
911     log check_func_headers "$@"
912     headers=$1
913     funcs=$2
914     shift 2
915     {
916         for hdr in $headers; do
917             print_include $hdr
918         done
919         for func in $funcs; do
920             echo "long check_$func(void) { return (long) $func; }"
921         done
922         echo "int main(void) { return 0; }"
923     } | check_ld "$@" && enable $funcs && enable_safe $headers
924 }
925
926 check_cpp_condition(){
927     log check_cpp_condition "$@"
928     header=$1
929     condition=$2
930     shift 2
931     check_cpp "$@" <<EOF
932 #include <$header>
933 #if !($condition)
934 #error "unsatisfied condition: $condition"
935 #endif
936 EOF
937 }
938
939 check_lib(){
940     log check_lib "$@"
941     header="$1"
942     func="$2"
943     shift 2
944     check_header $header && check_func $func "$@" && add_extralibs "$@"
945 }
946
947 check_lib2(){
948     log check_lib2 "$@"
949     headers="$1"
950     funcs="$2"
951     shift 2
952     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
953 }
954
955 check_pkg_config(){
956     log check_pkg_config "$@"
957     pkg="$1"
958     headers="$2"
959     funcs="$3"
960     shift 3
961     check_cmd $pkg_config --exists --print-errors $pkg || return
962     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
963     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
964     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
965         set_safe "${pkg}_cflags" $pkg_cflags   &&
966         set_safe "${pkg}_libs"   $pkg_libs
967 }
968
969 check_exec(){
970     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
971 }
972
973 check_exec_crash(){
974     code=$(cat)
975
976     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
977     # are safe but may not be available everywhere.  Thus we use
978     # raise(SIGTERM) instead.  The check is run in a subshell so we
979     # can redirect the "Terminated" message from the shell.  SIGBUS
980     # is not defined by standard C so it is used conditionally.
981
982     (check_exec "$@") >> $logfile 2>&1 <<EOF
983 #include <signal.h>
984 static void sighandler(int sig){
985     raise(SIGTERM);
986 }
987 int foo(void){
988     $code
989 }
990 int (*func_ptr)(void) = foo;
991 int main(void){
992     signal(SIGILL, sighandler);
993     signal(SIGFPE, sighandler);
994     signal(SIGSEGV, sighandler);
995 #ifdef SIGBUS
996     signal(SIGBUS, sighandler);
997 #endif
998     return func_ptr();
999 }
1000 EOF
1001 }
1002
1003 check_type(){
1004     log check_type "$@"
1005     headers=$1
1006     type=$2
1007     shift 2
1008     disable_safe "$type"
1009     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1010 }
1011
1012 check_struct(){
1013     log check_struct "$@"
1014     headers=$1
1015     struct=$2
1016     member=$3
1017     shift 3
1018     disable_safe "${struct}_${member}"
1019     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1020         enable_safe "${struct}_${member}"
1021 }
1022
1023 check_builtin(){
1024     log check_builtin "$@"
1025     name=$1
1026     headers=$2
1027     builtin=$3
1028     shift 3
1029     disable "$name"
1030     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1031 }
1032
1033 check_compile_assert(){
1034     log check_compile_assert "$@"
1035     name=$1
1036     headers=$2
1037     condition=$3
1038     shift 3
1039     disable "$name"
1040     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1041 }
1042
1043 require(){
1044     name="$1"
1045     header="$2"
1046     func="$3"
1047     shift 3
1048     check_lib $header $func "$@" || die "ERROR: $name not found"
1049 }
1050
1051 require2(){
1052     name="$1"
1053     headers="$2"
1054     func="$3"
1055     shift 3
1056     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1057 }
1058
1059 require_pkg_config(){
1060     pkg="$1"
1061     check_pkg_config "$@" || die "ERROR: $pkg not found"
1062     add_cflags    $(get_safe "${pkg}_cflags")
1063     add_extralibs $(get_safe "${pkg}_libs")
1064 }
1065
1066 hostcc_e(){
1067     eval printf '%s\\n' $HOSTCC_E
1068 }
1069
1070 hostcc_o(){
1071     eval printf '%s\\n' $HOSTCC_O
1072 }
1073
1074 check_host_cc(){
1075     log check_host_cc "$@"
1076     cat > $TMPC
1077     log_file $TMPC
1078     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1079 }
1080
1081 check_host_cpp(){
1082     log check_host_cpp "$@"
1083     cat > $TMPC
1084     log_file $TMPC
1085     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1086 }
1087
1088 check_host_cppflags(){
1089     log check_host_cppflags "$@"
1090     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1091 int x;
1092 EOF
1093 }
1094
1095 check_host_cflags(){
1096     log check_host_cflags "$@"
1097     set -- $($host_cflags_filter "$@")
1098     check_host_cc "$@" <<EOF && append host_cflags "$@"
1099 int x;
1100 EOF
1101 }
1102
1103 check_host_cpp_condition(){
1104     log check_host_cpp_condition "$@"
1105     header=$1
1106     condition=$2
1107     shift 2
1108     check_host_cpp "$@" <<EOF
1109 #include <$header>
1110 #if !($condition)
1111 #error "unsatisfied condition: $condition"
1112 #endif
1113 EOF
1114 }
1115
1116 apply(){
1117     file=$1
1118     shift
1119     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1120 }
1121
1122 cp_if_changed(){
1123     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1124     mkdir -p "$(dirname $2)"
1125     $cp_f "$1" "$2"
1126 }
1127
1128 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1129 # system-dependent things.
1130
1131 COMPONENT_LIST="
1132     bsfs
1133     decoders
1134     demuxers
1135     encoders
1136     filters
1137     hwaccels
1138     indevs
1139     muxers
1140     outdevs
1141     parsers
1142     protocols
1143 "
1144
1145 EXAMPLE_LIST="
1146     avcodec_example
1147     filter_audio_example
1148     metadata_example
1149     output_example
1150     qsvdec_example
1151     transcode_aac_example
1152 "
1153
1154 EXTERNAL_LIBRARY_LIST="
1155     avisynth
1156     bzlib
1157     frei0r
1158     gnutls
1159     libbs2b
1160     libcdio
1161     libdc1394
1162     libdcadec
1163     libfaac
1164     libfdk_aac
1165     libfontconfig
1166     libfreetype
1167     libgsm
1168     libilbc
1169     libmfx
1170     libmp3lame
1171     libopencore_amrnb
1172     libopencore_amrwb
1173     libopencv
1174     libopenh264
1175     libopenjpeg
1176     libopus
1177     libpulse
1178     librtmp
1179     libschroedinger
1180     libsnappy
1181     libspeex
1182     libtheora
1183     libtwolame
1184     libvo_aacenc
1185     libvo_amrwbenc
1186     libvorbis
1187     libvpx
1188     libwavpack
1189     libwebp
1190     libx264
1191     libx265
1192     libxavs
1193     libxcb
1194     libxcb_shm
1195     libxcb_xfixes
1196     libxvid
1197     mmal
1198     nvenc
1199     openssl
1200     x11grab
1201     zlib
1202 "
1203
1204 FEATURE_LIST="
1205     gray
1206     hardcoded_tables
1207     runtime_cpudetect
1208     safe_bitstream_reader
1209     shared
1210     small
1211     sram
1212     static
1213     swscale_alpha
1214 "
1215
1216 HWACCEL_LIST="
1217     d3d11va
1218     dxva2
1219     vaapi
1220     vda
1221     vdpau
1222 "
1223
1224 LIBRARY_LIST="
1225     avcodec
1226     avdevice
1227     avfilter
1228     avformat
1229     avresample
1230     avutil
1231     swscale
1232 "
1233
1234 LICENSE_LIST="
1235     gpl
1236     nonfree
1237     version3
1238 "
1239
1240 PROGRAM_LIST="
1241     avconv
1242     avplay
1243     avprobe
1244 "
1245
1246 SUBSYSTEM_LIST="
1247     dct
1248     doc
1249     error_resilience
1250     faan
1251     fft
1252     lsp
1253     lzo
1254     mdct
1255     network
1256     rdft
1257 "
1258
1259 CONFIG_LIST="
1260     $COMPONENT_LIST
1261     $EXAMPLE_LIST
1262     $EXTERNAL_LIBRARY_LIST
1263     $FEATURE_LIST
1264     $HWACCEL_LIST
1265     $LICENSE_LIST
1266     $LIBRARY_LIST
1267     $PROGRAM_LIST
1268     $SUBSYSTEM_LIST
1269     memalign_hack
1270     neon_clobber_test
1271     pic
1272     pod2man
1273     texi2html
1274     thumb
1275     valgrind_backtrace
1276     xmm_clobber_test
1277 "
1278
1279 THREADS_LIST="
1280     pthreads
1281     w32threads
1282 "
1283
1284 ATOMICS_LIST="
1285     atomics_gcc
1286     atomics_suncc
1287     atomics_win32
1288 "
1289
1290 ARCH_LIST="
1291     aarch64
1292     alpha
1293     arm
1294     avr32
1295     avr32_ap
1296     avr32_uc
1297     bfin
1298     ia64
1299     m68k
1300     mips
1301     mips64
1302     parisc
1303     ppc
1304     ppc64
1305     s390
1306     sh4
1307     sparc
1308     sparc64
1309     tilegx
1310     tilepro
1311     tomi
1312     x86
1313     x86_32
1314     x86_64
1315 "
1316
1317 ARCH_EXT_LIST_ARM="
1318     armv5te
1319     armv6
1320     armv6t2
1321     armv8
1322     neon
1323     vfp
1324     vfpv3
1325 "
1326
1327 ARCH_EXT_LIST_X86_SIMD="
1328     amd3dnow
1329     amd3dnowext
1330     avx
1331     avx2
1332     fma3
1333     fma4
1334     mmx
1335     mmxext
1336     sse
1337     sse2
1338     sse3
1339     sse4
1340     sse42
1341     ssse3
1342     xop
1343 "
1344
1345 ARCH_EXT_LIST_PPC="
1346     altivec
1347     dcbzl
1348     ldbrx
1349     power8
1350     ppc4xx
1351     vsx
1352 "
1353
1354 ARCH_EXT_LIST_X86="
1355     $ARCH_EXT_LIST_X86_SIMD
1356     cpunop
1357     i686
1358 "
1359
1360 ARCH_EXT_LIST="
1361     $ARCH_EXT_LIST_ARM
1362     $ARCH_EXT_LIST_PPC
1363     $ARCH_EXT_LIST_X86
1364     loongson
1365     vis
1366 "
1367
1368 ARCH_FEATURES="
1369     aligned_stack
1370     fast_64bit
1371     fast_clz
1372     fast_cmov
1373     local_aligned_8
1374     local_aligned_16
1375     simd_align_16
1376 "
1377
1378 BUILTIN_LIST="
1379     atomic_cas_ptr
1380     machine_rw_barrier
1381     MemoryBarrier
1382     mm_empty
1383     rdtsc
1384     sync_val_compare_and_swap
1385 "
1386 HAVE_LIST_CMDLINE="
1387     inline_asm
1388     symver
1389     yasm
1390 "
1391
1392 HAVE_LIST_PUB="
1393     bigendian
1394     fast_unaligned
1395 "
1396
1397 HEADERS_LIST="
1398     alsa_asoundlib_h
1399     altivec_h
1400     arpa_inet_h
1401     cdio_paranoia_h
1402     cdio_paranoia_paranoia_h
1403     dev_bktr_ioctl_bt848_h
1404     dev_bktr_ioctl_meteor_h
1405     dev_ic_bt8xx_h
1406     dev_video_bktr_ioctl_bt848_h
1407     dev_video_meteor_ioctl_meteor_h
1408     direct_h
1409     dlfcn_h
1410     d3d11_h
1411     dxva_h
1412     gsm_h
1413     io_h
1414     mach_mach_time_h
1415     machine_ioctl_bt848_h
1416     machine_ioctl_meteor_h
1417     malloc_h
1418     poll_h
1419     sndio_h
1420     soundcard_h
1421     sys_mman_h
1422     sys_param_h
1423     sys_resource_h
1424     sys_select_h
1425     sys_soundcard_h
1426     sys_time_h
1427     sys_un_h
1428     sys_videoio_h
1429     unistd_h
1430     valgrind_valgrind_h
1431     windows_h
1432     winsock2_h
1433 "
1434
1435 INTRINSICS_LIST="
1436     intrinsics_neon
1437 "
1438
1439 MATH_FUNCS="
1440     atanf
1441     atan2f
1442     cbrtf
1443     cosf
1444     exp2
1445     exp2f
1446     expf
1447     isinf
1448     isnan
1449     ldexpf
1450     llrint
1451     llrintf
1452     log2
1453     log2f
1454     log10f
1455     lrint
1456     lrintf
1457     powf
1458     rint
1459     round
1460     roundf
1461     sinf
1462     trunc
1463     truncf
1464 "
1465
1466 SYSTEM_FUNCS="
1467     aligned_malloc
1468     clock_gettime
1469     closesocket
1470     CommandLineToArgvW
1471     CoTaskMemFree
1472     CryptGenRandom
1473     dlopen
1474     fcntl
1475     flt_lim
1476     fork
1477     getaddrinfo
1478     gethrtime
1479     getopt
1480     GetProcessAffinityMask
1481     GetProcessMemoryInfo
1482     GetProcessTimes
1483     getrusage
1484     getservbyport
1485     GetSystemTimeAsFileTime
1486     gettimeofday
1487     gmtime_r
1488     inet_aton
1489     isatty
1490     jack_port_get_latency_range
1491     LoadLibrary
1492     localtime_r
1493     mach_absolute_time
1494     MapViewOfFile
1495     memalign
1496     mkstemp
1497     mmap
1498     mprotect
1499     nanosleep
1500     posix_memalign
1501     sched_getaffinity
1502     SetConsoleTextAttribute
1503     setmode
1504     setrlimit
1505     Sleep
1506     strerror_r
1507     sysconf
1508     sysctl
1509     usleep
1510     VirtualAlloc
1511 "
1512
1513 TOOLCHAIN_FEATURES="
1514     as_dn_directive
1515     as_func
1516     as_object_arch
1517     asm_mod_q
1518     attribute_may_alias
1519     attribute_packed
1520     ebp_available
1521     ebx_available
1522     gnu_as
1523     ibm_asm
1524     inline_asm_labels
1525     pragma_deprecated
1526     symver_asm_label
1527     symver_gnu_asm
1528     vfp_args
1529     xform_asm
1530     xmm_clobbers
1531 "
1532
1533 TYPES_LIST="
1534     CONDITION_VARIABLE_Ptr
1535     socklen_t
1536     struct_addrinfo
1537     struct_group_source_req
1538     struct_ip_mreq_source
1539     struct_ipv6_mreq
1540     struct_pollfd
1541     struct_rusage_ru_maxrss
1542     struct_sockaddr_in6
1543     struct_sockaddr_sa_len
1544     struct_sockaddr_storage
1545     struct_v4l2_frmivalenum_discrete
1546 "
1547
1548 HAVE_LIST="
1549     $ARCH_EXT_LIST
1550     $(add_suffix _external $ARCH_EXT_LIST)
1551     $(add_suffix _inline   $ARCH_EXT_LIST)
1552     $ARCH_FEATURES
1553     $ATOMICS_LIST
1554     $BUILTIN_LIST
1555     $HAVE_LIST_CMDLINE
1556     $HAVE_LIST_PUB
1557     $HEADERS_LIST
1558     $INTRINSICS_LIST
1559     $MATH_FUNCS
1560     $SYSTEM_FUNCS
1561     $THREADS_LIST
1562     $TOOLCHAIN_FEATURES
1563     $TYPES_LIST
1564     atomics_native
1565     dos_paths
1566     dxva2_lib
1567     libc_msvcrt
1568     libdc1394_1
1569     libdc1394_2
1570     sdl
1571     section_data_rel_ro
1572     threads
1573     vaapi_x11
1574     vdpau_x11
1575     xlib
1576 "
1577
1578 # options emitted with CONFIG_ prefix but not available on the command line
1579 CONFIG_EXTRA="
1580     aandcttables
1581     ac3dsp
1582     audio_frame_queue
1583     audiodsp
1584     blockdsp
1585     bswapdsp
1586     cabac
1587     dvprofile
1588     faandct
1589     faanidct
1590     fdctdsp
1591     fmtconvert
1592     gcrypt
1593     gmp
1594     golomb
1595     gplv3
1596     h263dsp
1597     h264chroma
1598     h264dsp
1599     h264pred
1600     h264qpel
1601     hpeldsp
1602     huffman
1603     huffyuvdsp
1604     huffyuvencdsp
1605     idctdsp
1606     iirfilter
1607     imdct15
1608     intrax8
1609     jpegtables
1610     lgplv3
1611     lpc
1612     me_cmp
1613     mpeg_er
1614     mpegaudio
1615     mpegaudiodsp
1616     mpegvideo
1617     mpegvideoenc
1618     pixblockdsp
1619     qpeldsp
1620     qsv
1621     qsvdec
1622     qsvenc
1623     rangecoder
1624     riffdec
1625     riffenc
1626     rtpdec
1627     rtpenc_chain
1628     sinewin
1629     snappy
1630     startcode
1631     texturedsp
1632     texturedspenc
1633     tpeldsp
1634     videodsp
1635     vp3dsp
1636     wma_freqs
1637 "
1638
1639 CMDLINE_SELECT="
1640     $ARCH_EXT_LIST
1641     $CONFIG_LIST
1642     $HAVE_LIST_CMDLINE
1643     $THREADS_LIST
1644     asm
1645     cross_compile
1646     debug
1647     extra_warnings
1648     logging
1649     lto
1650     optimizations
1651     rpath
1652 "
1653
1654 PATHS_LIST="
1655     bindir
1656     datadir
1657     docdir
1658     incdir
1659     libdir
1660     mandir
1661     prefix
1662     shlibdir
1663 "
1664
1665 CMDLINE_SET="
1666     $PATHS_LIST
1667     ar
1668     arch
1669     as
1670     build_suffix
1671     cc
1672     cpu
1673     cross_prefix
1674     dep_cc
1675     env
1676     extra_version
1677     host_cc
1678     host_cflags
1679     host_ld
1680     host_ldflags
1681     host_libs
1682     host_os
1683     ld
1684     logfile
1685     malloc_prefix
1686     nm
1687     optflags
1688     pkg_config
1689     pkg_config_flags
1690     random_seed
1691     samples
1692     sysinclude
1693     sysroot
1694     target_exec
1695     target_os
1696     target_path
1697     target_samples
1698     toolchain
1699 "
1700
1701 CMDLINE_APPEND="
1702     extra_cflags
1703     host_cppflags
1704 "
1705
1706 # code dependency declarations
1707
1708 # architecture extensions
1709
1710 armv5te_deps="arm"
1711 armv6_deps="arm"
1712 armv6t2_deps="arm"
1713 armv8_deps="aarch64"
1714 neon_deps_any="aarch64 arm"
1715 intrinsics_neon_deps="neon"
1716 vfp_deps_any="aarch64 arm"
1717 vfpv3_deps="vfp"
1718
1719 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1720
1721 altivec_deps="ppc"
1722 ppc4xx_deps="ppc"
1723 vsx_deps="altivec"
1724 power8_deps="vsx"
1725
1726 cpunop_deps="i686"
1727 x86_64_select="i686"
1728 x86_64_suggest="fast_cmov"
1729
1730 amd3dnow_deps="mmx"
1731 amd3dnowext_deps="amd3dnow"
1732 i686_deps="x86"
1733 mmx_deps="x86"
1734 mmxext_deps="mmx"
1735 sse_deps="mmxext"
1736 sse2_deps="sse"
1737 sse3_deps="sse2"
1738 ssse3_deps="sse3"
1739 sse4_deps="ssse3"
1740 sse42_deps="sse4"
1741 avx_deps="sse42"
1742 xop_deps="avx"
1743 fma3_deps="avx"
1744 fma4_deps="avx"
1745 avx2_deps="avx"
1746
1747 mmx_external_deps="yasm"
1748 mmx_inline_deps="inline_asm"
1749 mmx_suggest="mmx_external mmx_inline"
1750
1751 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1752     eval dep=\$${ext}_deps
1753     eval ${ext}_external_deps='"${dep}_external"'
1754     eval ${ext}_inline_deps='"${dep}_inline"'
1755     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1756 done
1757
1758 aligned_stack_if_any="aarch64 ppc x86"
1759 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1760 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1761 fast_unaligned_if_any="aarch64 ppc x86"
1762 simd_align_16_if_any="altivec neon sse"
1763
1764 # system capabilities
1765 symver_if_any="symver_asm_label symver_gnu_asm"
1766 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1767
1768 # threading support
1769 atomics_gcc_if="sync_val_compare_and_swap"
1770 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1771 atomics_win32_if="MemoryBarrier"
1772 atomics_native_if_any="$ATOMICS_LIST"
1773 w32threads_deps="atomics_native"
1774 threads_if_any="$THREADS_LIST"
1775
1776 # subsystems
1777 dct_select="rdft"
1778 error_resilience_select="me_cmp"
1779 faandct_deps="faan fdctdsp"
1780 faanidct_deps="faan idctdsp"
1781 intrax8_select="error_resilience"
1782 mdct_select="fft"
1783 rdft_select="fft"
1784 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1785 mpeg_er_select="error_resilience"
1786 mpegaudio_select="mpegaudiodsp"
1787 mpegaudiodsp_select="dct"
1788 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp videodsp"
1789 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1790 nvenc_deps_any="dlopen LoadLibrary"
1791 nvenc_extralibs='$ldl'
1792 qsvdec_select="qsv"
1793 qsvenc_select="qsv"
1794
1795 # decoders / encoders
1796 aac_decoder_select="imdct15 mdct sinewin"
1797 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1798 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1799 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1800 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1801 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1802 aic_decoder_select="golomb idctdsp"
1803 alac_encoder_select="lpc"
1804 als_decoder_select="bswapdsp"
1805 amrnb_decoder_select="lsp"
1806 amrwb_decoder_select="lsp"
1807 amv_decoder_select="sp5x_decoder"
1808 ape_decoder_select="bswapdsp"
1809 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1810 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1811 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1812 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1813 atrac1_decoder_select="mdct sinewin"
1814 atrac3_decoder_select="mdct"
1815 atrac3p_decoder_select="mdct sinewin"
1816 bink_decoder_select="blockdsp hpeldsp"
1817 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1818 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1819 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1820 cllc_decoder_select="bswapdsp"
1821 comfortnoise_encoder_select="lpc"
1822 cook_decoder_select="audiodsp mdct sinewin"
1823 cscd_decoder_select="lzo"
1824 cscd_decoder_suggest="zlib"
1825 dca_decoder_select="fmtconvert mdct"
1826 dds_decoder_select="texturedsp"
1827 dnxhd_decoder_select="blockdsp idctdsp"
1828 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1829 dvvideo_decoder_select="dvprofile idctdsp"
1830 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1831 dxa_decoder_deps="zlib"
1832 eac3_decoder_select="ac3_decoder"
1833 eac3_encoder_select="ac3_encoder"
1834 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1835 eatgq_decoder_select="aandcttables idctdsp"
1836 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
1837 exr_decoder_deps="zlib"
1838 ffv1_decoder_select="golomb rangecoder"
1839 ffv1_encoder_select="rangecoder"
1840 ffvhuff_decoder_select="huffyuv_decoder"
1841 ffvhuff_encoder_select="huffyuv_encoder"
1842 fic_decoder_select="golomb"
1843 flac_decoder_select="golomb"
1844 flac_encoder_select="bswapdsp golomb lpc"
1845 flashsv_decoder_deps="zlib"
1846 flashsv_encoder_deps="zlib"
1847 flashsv2_decoder_deps="zlib"
1848 flv_decoder_select="h263_decoder"
1849 flv_encoder_select="h263_encoder"
1850 fourxm_decoder_select="blockdsp bswapdsp"
1851 fraps_decoder_select="bswapdsp huffman"
1852 g2m_decoder_deps="zlib"
1853 g2m_decoder_select="blockdsp idctdsp jpegtables"
1854 h261_decoder_select="mpeg_er mpegvideo"
1855 h261_encoder_select="aandcttables mpegvideoenc"
1856 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1857 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1858 h263i_decoder_select="h263_decoder"
1859 h263p_encoder_select="h263_encoder"
1860 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
1861 h264_decoder_suggest="error_resilience"
1862 h264_nvenc_encoder_deps="nvenc"
1863 h264_qsv_decoder_deps="libmfx"
1864 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
1865 h264_qsv_encoder_deps="libmfx"
1866 h264_qsv_encoder_select="qsvenc"
1867 hap_decoder_select="snappy texturedsp"
1868 hap_encoder_deps="libsnappy"
1869 hap_encoder_select="texturedspenc"
1870 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1871 hevc_nvenc_encoder_deps="nvenc"
1872 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1873 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1874 iac_decoder_select="imc_decoder"
1875 imc_decoder_select="bswapdsp fft mdct sinewin"
1876 indeo3_decoder_select="hpeldsp"
1877 interplay_video_decoder_select="hpeldsp"
1878 jpegls_decoder_select="golomb mjpeg_decoder"
1879 jpegls_encoder_select="golomb"
1880 jv_decoder_select="blockdsp"
1881 lagarith_decoder_select="huffyuvdsp"
1882 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
1883 loco_decoder_select="golomb"
1884 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1885 metasound_decoder_select="lsp mdct sinewin"
1886 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1887 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
1888 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
1889 mjpegb_decoder_select="mjpeg_decoder"
1890 mlp_decoder_select="mlp_parser"
1891 motionpixels_decoder_select="bswapdsp"
1892 mp1_decoder_select="mpegaudio"
1893 mp1float_decoder_select="mpegaudio"
1894 mp2_decoder_select="mpegaudio"
1895 mp2float_decoder_select="mpegaudio"
1896 mp3_decoder_select="mpegaudio"
1897 mp3adu_decoder_select="mpegaudio"
1898 mp3adufloat_decoder_select="mpegaudio"
1899 mp3float_decoder_select="mpegaudio"
1900 mp3on4_decoder_select="mpegaudio"
1901 mp3on4float_decoder_select="mpegaudio"
1902 mpc7_decoder_select="bswapdsp mpegaudiodsp"
1903 mpc8_decoder_select="mpegaudiodsp"
1904 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1905 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1906 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
1907 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1908 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
1909 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1910 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1911 mpeg4_encoder_select="h263_encoder"
1912 msmpeg4v1_decoder_select="h263_decoder"
1913 msmpeg4v2_decoder_select="h263_decoder"
1914 msmpeg4v2_encoder_select="h263_encoder"
1915 msmpeg4v3_decoder_select="h263_decoder"
1916 msmpeg4v3_encoder_select="h263_encoder"
1917 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
1918 mxpeg_decoder_select="mjpeg_decoder"
1919 nellymoser_decoder_select="mdct sinewin"
1920 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1921 nuv_decoder_select="idctdsp lzo"
1922 on2avc_decoder_select="mdct"
1923 opus_decoder_deps="avresample"
1924 opus_decoder_select="imdct15"
1925 png_decoder_deps="zlib"
1926 png_encoder_deps="zlib"
1927 png_encoder_select="huffyuvencdsp"
1928 prores_decoder_select="idctdsp"
1929 prores_encoder_select="fdctdsp"
1930 qcelp_decoder_select="lsp"
1931 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1932 ra_144_encoder_select="audio_frame_queue lpc"
1933 ralf_decoder_select="golomb"
1934 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1935 rv10_encoder_select="h263_encoder"
1936 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1937 rv20_encoder_select="h263_encoder"
1938 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1939 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1940 shorten_decoder_select="golomb"
1941 sipr_decoder_select="lsp"
1942 sp5x_decoder_select="mjpeg_decoder"
1943 svq1_decoder_select="hpeldsp"
1944 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
1945 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1946 svq3_decoder_suggest="zlib"
1947 tak_decoder_select="audiodsp"
1948 tdsc_decoder_deps="zlib"
1949 tdsc_decoder_select="mjpeg_decoder"
1950 theora_decoder_select="vp3_decoder"
1951 thp_decoder_select="mjpeg_decoder"
1952 tiff_decoder_suggest="zlib"
1953 tiff_encoder_suggest="zlib"
1954 truehd_decoder_select="mlp_decoder"
1955 truemotion2_decoder_select="bswapdsp"
1956 truespeech_decoder_select="bswapdsp"
1957 tscc_decoder_deps="zlib"
1958 txd_decoder_select="texturedsp"
1959 twinvq_decoder_select="mdct lsp sinewin"
1960 utvideo_decoder_select="bswapdsp"
1961 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
1962 vble_decoder_select="huffyuvdsp"
1963 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
1964 vc1image_decoder_select="vc1_decoder"
1965 vorbis_decoder_select="mdct"
1966 vorbis_encoder_select="mdct"
1967 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1968 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1969 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1970 vp6a_decoder_select="vp6_decoder"
1971 vp6f_decoder_select="vp6_decoder"
1972 vp7_decoder_select="h264pred videodsp"
1973 vp8_decoder_select="h264pred videodsp"
1974 vp9_decoder_select="videodsp"
1975 webp_decoder_select="vp8_decoder"
1976 wmapro_decoder_select="mdct sinewin wma_freqs"
1977 wmav1_decoder_select="mdct sinewin wma_freqs"
1978 wmav1_encoder_select="mdct sinewin wma_freqs"
1979 wmav2_decoder_select="mdct sinewin wma_freqs"
1980 wmav2_encoder_select="mdct sinewin wma_freqs"
1981 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1982 wmv1_decoder_select="h263_decoder"
1983 wmv1_encoder_select="h263_encoder"
1984 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
1985 wmv2_encoder_select="h263_encoder"
1986 wmv3_decoder_select="vc1_decoder"
1987 wmv3image_decoder_select="wmv3_decoder"
1988 zerocodec_decoder_deps="zlib"
1989 zlib_decoder_deps="zlib"
1990 zlib_encoder_deps="zlib"
1991 zmbv_decoder_deps="zlib"
1992 zmbv_encoder_deps="zlib"
1993
1994 # hardware accelerators
1995 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
1996 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
1997 vaapi_deps="va_va_h"
1998 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1999 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2000 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2001
2002 h263_vaapi_hwaccel_deps="vaapi"
2003 h263_vaapi_hwaccel_select="h263_decoder"
2004 h263_vdpau_hwaccel_deps="vdpau"
2005 h263_vdpau_hwaccel_select="h263_decoder"
2006 h264_d3d11va_hwaccel_deps="d3d11va"
2007 h264_d3d11va_hwaccel_select="h264_decoder"
2008 h264_dxva2_hwaccel_deps="dxva2"
2009 h264_dxva2_hwaccel_select="h264_decoder"
2010 h264_mmal_decoder_deps="mmal"
2011 h264_mmal_hwaccel_deps="mmal"
2012 h264_mmal_decoder_select="h264_decoder"
2013 h264_mmal_encoder_deps="mmal"
2014 h264_qsv_hwaccel_deps="libmfx"
2015 h264_vaapi_hwaccel_deps="vaapi"
2016 h264_vaapi_hwaccel_select="h264_decoder"
2017 h264_vda_hwaccel_deps="vda"
2018 h264_vda_hwaccel_select="h264_decoder"
2019 h264_vda_old_hwaccel_deps="vda"
2020 h264_vda_old_hwaccel_select="h264_decoder"
2021 h264_vdpau_hwaccel_deps="vdpau"
2022 h264_vdpau_hwaccel_select="h264_decoder"
2023 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2024 hevc_d3d11va_hwaccel_select="hevc_decoder"
2025 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2026 hevc_dxva2_hwaccel_select="hevc_decoder"
2027 mpeg1_vdpau_hwaccel_deps="vdpau"
2028 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2029 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2030 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2031 mpeg2_dxva2_hwaccel_deps="dxva2"
2032 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2033 mpeg2_vaapi_hwaccel_deps="vaapi"
2034 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2035 mpeg2_vdpau_hwaccel_deps="vdpau"
2036 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2037 mpeg4_vaapi_hwaccel_deps="vaapi"
2038 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2039 mpeg4_vdpau_hwaccel_deps="vdpau"
2040 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2041 vc1_d3d11va_hwaccel_deps="d3d11va"
2042 vc1_d3d11va_hwaccel_select="vc1_decoder"
2043 vc1_dxva2_hwaccel_deps="dxva2"
2044 vc1_dxva2_hwaccel_select="vc1_decoder"
2045 vc1_vaapi_hwaccel_deps="vaapi"
2046 vc1_vaapi_hwaccel_select="vc1_decoder"
2047 vc1_vdpau_hwaccel_deps="vdpau"
2048 vc1_vdpau_hwaccel_select="vc1_decoder"
2049 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2050 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2051 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2052 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2053
2054 # parsers
2055 h264_parser_select="h264_decoder"
2056 mpegvideo_parser_select="mpegvideo"
2057 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2058 vc1_parser_select="mpegvideo startcode vc1_decoder"
2059
2060 # bitstream_filters
2061 mjpeg2jpeg_bsf_select="jpegtables"
2062
2063 # external libraries
2064 libdcadec_decoder_deps="libdcadec"
2065 libfaac_encoder_deps="libfaac"
2066 libfaac_encoder_select="audio_frame_queue"
2067 libfdk_aac_decoder_deps="libfdk_aac"
2068 libfdk_aac_encoder_deps="libfdk_aac"
2069 libfdk_aac_encoder_select="audio_frame_queue"
2070 libgsm_decoder_deps="libgsm"
2071 libgsm_encoder_deps="libgsm"
2072 libgsm_ms_decoder_deps="libgsm"
2073 libgsm_ms_encoder_deps="libgsm"
2074 libilbc_decoder_deps="libilbc"
2075 libilbc_encoder_deps="libilbc"
2076 libmp3lame_encoder_deps="libmp3lame"
2077 libmp3lame_encoder_select="audio_frame_queue"
2078 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2079 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2080 libopencore_amrnb_encoder_select="audio_frame_queue"
2081 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2082 libopenh264_encoder_deps="libopenh264"
2083 libopenjpeg_decoder_deps="libopenjpeg"
2084 libopenjpeg_encoder_deps="libopenjpeg"
2085 libopus_decoder_deps="libopus"
2086 libopus_encoder_deps="libopus"
2087 libopus_encoder_select="audio_frame_queue"
2088 libschroedinger_decoder_deps="libschroedinger"
2089 libschroedinger_encoder_deps="libschroedinger"
2090 libspeex_decoder_deps="libspeex"
2091 libspeex_encoder_deps="libspeex"
2092 libspeex_encoder_select="audio_frame_queue"
2093 libtheora_encoder_deps="libtheora"
2094 libtwolame_encoder_deps="libtwolame"
2095 libvo_aacenc_encoder_deps="libvo_aacenc"
2096 libvo_aacenc_encoder_select="audio_frame_queue"
2097 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2098 libvorbis_encoder_deps="libvorbis"
2099 libvorbis_encoder_select="audio_frame_queue"
2100 libvpx_vp8_decoder_deps="libvpx"
2101 libvpx_vp8_encoder_deps="libvpx"
2102 libvpx_vp9_decoder_deps="libvpx"
2103 libvpx_vp9_encoder_deps="libvpx"
2104 libwavpack_encoder_deps="libwavpack"
2105 libwebp_encoder_deps="libwebp"
2106 libx264_encoder_deps="libx264"
2107 libx265_encoder_deps="libx265"
2108 libxavs_encoder_deps="libxavs"
2109 libxvid_encoder_deps="libxvid"
2110
2111 # demuxers / muxers
2112 ac3_demuxer_select="ac3_parser"
2113 asf_demuxer_select="riffdec"
2114 asf_muxer_select="riffenc"
2115 asf_stream_muxer_select="asf_muxer"
2116 avi_demuxer_select="riffdec"
2117 avi_muxer_select="riffenc"
2118 avisynth_demuxer_deps="avisynth"
2119 avisynth_demuxer_select="riffdec"
2120 caf_demuxer_select="riffdec"
2121 dash_muxer_select="mp4_muxer"
2122 dirac_demuxer_select="dirac_parser"
2123 dv_demuxer_select="dvprofile"
2124 dv_muxer_select="dvprofile"
2125 dxa_demuxer_select="riffdec"
2126 eac3_demuxer_select="ac3_parser"
2127 f4v_muxer_select="mov_muxer"
2128 flac_demuxer_select="flac_parser"
2129 hds_muxer_select="flv_muxer"
2130 hls_muxer_select="mpegts_muxer"
2131 ipod_muxer_select="mov_muxer"
2132 ismv_muxer_select="mov_muxer"
2133 matroska_audio_muxer_select="matroska_muxer"
2134 matroska_demuxer_select="riffdec"
2135 matroska_demuxer_suggest="bzlib lzo zlib"
2136 matroska_muxer_select="riffenc"
2137 mmf_muxer_select="riffenc"
2138 mov_demuxer_select="riffdec"
2139 mov_demuxer_suggest="zlib"
2140 mov_muxer_select="riffenc rtpenc_chain"
2141 mp3_demuxer_select="mpegaudio_parser"
2142 mp4_muxer_select="mov_muxer"
2143 mpegts_muxer_select="adts_muxer latm_muxer"
2144 mpegtsraw_demuxer_select="mpegts_demuxer"
2145 mxf_d10_muxer_select="mxf_muxer"
2146 nut_muxer_select="riffenc"
2147 nuv_demuxer_select="riffdec"
2148 oga_muxer_select="ogg_muxer"
2149 ogg_demuxer_select="golomb"
2150 opus_muxer_select="ogg_muxer"
2151 psp_muxer_select="mov_muxer"
2152 rtp_demuxer_select="sdp_demuxer"
2153 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2154 rtsp_demuxer_select="http_protocol rtpdec"
2155 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2156 sap_demuxer_select="sdp_demuxer"
2157 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2158 sdp_demuxer_select="rtpdec"
2159 smoothstreaming_muxer_select="ismv_muxer"
2160 spdif_muxer_select="aac_parser"
2161 spx_muxer_select="ogg_muxer"
2162 tak_demuxer_select="tak_parser"
2163 tg2_muxer_select="mov_muxer"
2164 tgp_muxer_select="mov_muxer"
2165 w64_demuxer_select="wav_demuxer"
2166 wav_demuxer_select="riffdec"
2167 wav_muxer_select="riffenc"
2168 webm_muxer_select="riffenc"
2169 wtv_demuxer_select="riffdec"
2170 xmv_demuxer_select="riffdec"
2171 xwma_demuxer_select="riffdec"
2172
2173 # indevs / outdevs
2174 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2175 alsa_outdev_deps="alsa_asoundlib_h"
2176 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2177 dv1394_indev_deps="dv1394"
2178 dv1394_indev_select="dv_demuxer"
2179 fbdev_indev_deps="linux_fb_h"
2180 jack_indev_deps="jack_jack_h pthreads"
2181 libcdio_indev_deps="libcdio"
2182 libdc1394_indev_deps="libdc1394"
2183 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2184 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2185 pulse_indev_deps="libpulse"
2186 sndio_indev_deps="sndio_h"
2187 sndio_outdev_deps="sndio_h"
2188 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2189 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2190 vfwcap_indev_extralibs="-lavicap32"
2191 x11grab_indev_deps="x11grab"
2192 x11grab_xcb_indev_deps="libxcb"
2193
2194 # protocols
2195 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2196 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2197 ffrtmpcrypt_protocol_select="tcp_protocol"
2198 ffrtmphttp_protocol_deps="!librtmp_protocol"
2199 ffrtmphttp_protocol_select="http_protocol"
2200 gopher_protocol_select="network"
2201 http_protocol_select="tcp_protocol"
2202 httpproxy_protocol_select="tcp_protocol"
2203 https_protocol_select="tls_protocol"
2204 icecast_protocol_select="http_protocol"
2205 librtmp_protocol_deps="librtmp"
2206 librtmpe_protocol_deps="librtmp"
2207 librtmps_protocol_deps="librtmp"
2208 librtmpt_protocol_deps="librtmp"
2209 librtmpte_protocol_deps="librtmp"
2210 mmsh_protocol_select="http_protocol"
2211 mmst_protocol_select="network"
2212 rtmp_protocol_deps="!librtmp_protocol"
2213 rtmp_protocol_select="tcp_protocol"
2214 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2215 rtmps_protocol_deps="!librtmp_protocol"
2216 rtmps_protocol_select="tls_protocol"
2217 rtmpt_protocol_select="ffrtmphttp_protocol"
2218 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2219 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2220 rtp_protocol_select="udp_protocol"
2221 sctp_protocol_deps="struct_sctp_event_subscribe"
2222 sctp_protocol_select="network"
2223 srtp_protocol_select="rtp_protocol"
2224 tcp_protocol_select="network"
2225 tls_gnutls_protocol_deps="gnutls"
2226 tls_gnutls_protocol_select="tcp_protocol"
2227 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2228 tls_openssl_protocol_select="tcp_protocol"
2229 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2230 udp_protocol_select="network"
2231 unix_protocol_deps="sys_un_h"
2232 unix_protocol_select="network"
2233
2234 # filters
2235 blackframe_filter_deps="gpl"
2236 boxblur_filter_deps="gpl"
2237 bs2b_filter_deps="libbs2b"
2238 cropdetect_filter_deps="gpl"
2239 delogo_filter_deps="gpl"
2240 drawtext_filter_deps="libfreetype"
2241 frei0r_filter_deps="frei0r dlopen"
2242 frei0r_filter_extralibs='$ldl'
2243 frei0r_src_filter_deps="frei0r dlopen"
2244 frei0r_src_filter_extralibs='$ldl'
2245 hqdn3d_filter_deps="gpl"
2246 interlace_filter_deps="gpl"
2247 ocv_filter_deps="libopencv"
2248 resample_filter_deps="avresample"
2249 scale_filter_deps="swscale"
2250
2251 # examples
2252 avcodec_example_deps="avcodec avutil"
2253 filter_audio_example_deps="avfilter avutil"
2254 metadata_example_deps="avformat avutil"
2255 output_example_deps="avcodec avformat avutil swscale"
2256 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2257 transcode_aac_example_deps="avcodec avformat avresample"
2258
2259 # libraries, in linking order
2260 avcodec_deps="avutil"
2261 avdevice_deps="avformat avcodec avutil"
2262 avfilter_deps="avutil"
2263 avformat_deps="avcodec avutil"
2264 avresample_deps="avutil"
2265 swscale_deps="avutil"
2266
2267 # programs
2268 avconv_deps="avcodec avfilter avformat avresample swscale"
2269 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2270                fps_filter null_filter resample_filter scale_filter
2271                setpts_filter trim_filter"
2272 avplay_deps="avcodec avformat avresample swscale sdl"
2273 avplay_libs='$sdl_libs'
2274 avplay_select="rdft transpose_filter hflip_filter vflip_filter"
2275 avprobe_deps="avcodec avformat"
2276
2277 # documentation
2278 pod2man_deps="doc"
2279 texi2html_deps="doc"
2280
2281 # default parameters
2282
2283 logfile="config.log"
2284
2285 # installation paths
2286 prefix_default="/usr/local"
2287 bindir_default='${prefix}/bin'
2288 datadir_default='${prefix}/share/avconv'
2289 docdir_default='${prefix}/share/doc/libav'
2290 incdir_default='${prefix}/include'
2291 libdir_default='${prefix}/lib'
2292 mandir_default='${prefix}/share/man'
2293 shlibdir_default="$libdir_default"
2294
2295 # toolchain
2296 ar_default="ar"
2297 cc_default="gcc"
2298 host_cc_default="gcc"
2299 cp_f="cp -f"
2300 ln_s="ln -s -f"
2301 nm_default="nm -g"
2302 objformat="elf"
2303 pkg_config_default=pkg-config
2304 ranlib="ranlib"
2305 strip="strip"
2306 yasmexe="yasm"
2307
2308 # machine
2309 arch_default=$(uname -m)
2310 cpu="generic"
2311 intrinsics="none"
2312
2313 # OS
2314 target_os_default=$(tolower $(uname -s))
2315 host_os=$target_os_default
2316
2317 # configurable options
2318 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2319
2320 enable asm
2321 enable debug
2322 enable doc
2323 enable faan faandct faanidct
2324 enable optimizations
2325 enable safe_bitstream_reader
2326 enable static
2327 enable swscale_alpha
2328 enable valgrind_backtrace
2329
2330 # By default, enable only those hwaccels that have no external dependencies.
2331 enable d3d11va dxva2 vda vdpau
2332
2333 # build settings
2334 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2335 LIBPREF="lib"
2336 LIBSUF=".a"
2337 FULLNAME='$(NAME)$(BUILDSUF)'
2338 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2339 SLIBPREF="lib"
2340 SLIBSUF=".so"
2341 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2342 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2343 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2344 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2345 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2346 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2347
2348 asflags_filter=echo
2349 cflags_filter=echo
2350 ldflags_filter=echo
2351
2352 AS_C='-c'
2353 AS_O='-o $@'
2354 CC_C='-c'
2355 CC_E='-E -o $@'
2356 CC_O='-o $@'
2357 LD_O='-o $@'
2358 LD_LIB='-l%'
2359 LD_PATH='-L'
2360 HOSTCC_C='-c'
2361 HOSTCC_E='-E -o $@'
2362 HOSTCC_O='-o $@'
2363 HOSTLD_O='-o $@'
2364
2365 host_libs='-lm'
2366 host_cflags_filter=echo
2367 host_ldflags_filter=echo
2368
2369 target_path='$(CURDIR)'
2370
2371 # since the object filename is not given with the -MM flag, the compiler
2372 # is only able to print the basename, and we must add the path ourselves
2373 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2374 DEPFLAGS='-MM'
2375
2376 # find source path
2377 if test -f configure; then
2378     source_path=.
2379 else
2380     source_path=$(cd $(dirname "$0"); pwd)
2381     echo "$source_path" | grep -q '[[:blank:]]' &&
2382         die "Out of tree builds are impossible with whitespace in source path."
2383     test -e "$source_path/config.h" &&
2384         die "Out of tree builds are impossible with config.h in source dir."
2385 fi
2386
2387 for v in "$@"; do
2388     r=${v#*=}
2389     l=${v%"$r"}
2390     r=$(sh_quote "$r")
2391     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2392 done
2393
2394 find_things(){
2395     thing=$1
2396     pattern=$2
2397     file=$source_path/$3
2398     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2399 }
2400
2401 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2402 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2403 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2404 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2405 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2406 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2407 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2408 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2409 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2410 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2411 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2412
2413 ALL_COMPONENTS="
2414     $BSF_LIST
2415     $DECODER_LIST
2416     $DEMUXER_LIST
2417     $ENCODER_LIST
2418     $FILTER_LIST
2419     $HWACCEL_LIST
2420     $INDEV_LIST
2421     $MUXER_LIST
2422     $OUTDEV_LIST
2423     $PARSER_LIST
2424     $PROTOCOL_LIST
2425 "
2426
2427 for n in $COMPONENT_LIST; do
2428     v=$(toupper ${n%s})_LIST
2429     eval enable \$$v
2430     eval ${n}_if_any="\$$v"
2431 done
2432
2433 enable $ARCH_EXT_LIST
2434
2435 die_unknown(){
2436     echo "Unknown option \"$1\"."
2437     echo "See $0 --help for available options."
2438     exit 1
2439 }
2440
2441 print_3_columns() {
2442     cat | tr ' ' '\n' | sort | pr -r -3 -t
2443 }
2444
2445 show_list() {
2446     suffix=_$1
2447     shift
2448     echo $* | sed s/$suffix//g | print_3_columns
2449     exit 0
2450 }
2451
2452 rand_list(){
2453     IFS=', '
2454     set -- $*
2455     unset IFS
2456     for thing; do
2457         comp=${thing%:*}
2458         prob=${thing#$comp}
2459         prob=${prob#:}
2460         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2461         echo "prob ${prob:-0.5}"
2462         printf '%s\n' $comp
2463     done
2464 }
2465
2466 do_random(){
2467     action=$1
2468     shift
2469     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2470     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2471 }
2472
2473 for opt do
2474     optval="${opt#*=}"
2475     case "$opt" in
2476         --extra-ldflags=*)
2477             add_ldflags $optval
2478         ;;
2479         --extra-ldexeflags=*)
2480             add_ldexeflags $optval
2481         ;;
2482         --extra-libs=*)
2483             add_extralibs $optval
2484         ;;
2485         --disable-devices)
2486             disable $INDEV_LIST $OUTDEV_LIST
2487         ;;
2488         --enable-debug=*)
2489             debuglevel="$optval"
2490         ;;
2491         --disable-programs)
2492             disable $PROGRAM_LIST
2493         ;;
2494         --disable-everything)
2495             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2496         ;;
2497         --disable-all)
2498             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2499             disable $LIBRARY_LIST $PROGRAM_LIST doc
2500         ;;
2501         --enable-random|--disable-random)
2502             action=${opt%%-random}
2503             do_random ${action#--} $COMPONENT_LIST
2504         ;;
2505         --enable-random=*|--disable-random=*)
2506             action=${opt%%-random=*}
2507             do_random ${action#--} $optval
2508         ;;
2509         --enable-*=*|--disable-*=*)
2510             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2511             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2512             eval list=\$$(toupper $thing)_LIST
2513             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2514             $action $(filter "$name" $list)
2515         ;;
2516         --enable-avserver|--disable-avserver*)
2517             warn "avserver has been removed, the ${opt} option is only"\
2518                  "provided for compatibility and will be removed in the future"
2519         ;;
2520         --enable-?*|--disable-?*)
2521             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2522             if is_in $option $COMPONENT_LIST; then
2523                 test $action = disable && action=unset
2524                 eval $action \$$(toupper ${option%s})_LIST
2525             elif is_in $option $CMDLINE_SELECT; then
2526                 $action $option
2527             else
2528                 die_unknown $opt
2529             fi
2530         ;;
2531         --list-*)
2532             NAME="${opt#--list-}"
2533             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2534             NAME=${NAME%s}
2535             eval show_list $NAME \$$(toupper $NAME)_LIST
2536         ;;
2537         --help|-h) show_help
2538         ;;
2539         *)
2540             optname="${opt%%=*}"
2541             optname="${optname#--}"
2542             optname=$(echo "$optname" | sed 's/-/_/g')
2543             if is_in $optname $CMDLINE_SET; then
2544                 eval $optname='$optval'
2545             elif is_in $optname $CMDLINE_APPEND; then
2546                 append $optname "$optval"
2547             else
2548                 die_unknown $opt
2549             fi
2550         ;;
2551     esac
2552 done
2553
2554 for e in $env; do
2555     eval "export $e"
2556 done
2557
2558 disabled logging && logfile=/dev/null
2559
2560 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2561 set >> $logfile
2562
2563 case "$toolchain" in
2564     clang-asan)
2565         cc_default="clang"
2566         add_cflags  -fsanitize=address
2567         add_ldflags -fsanitize=address
2568     ;;
2569     clang-tsan)
2570         cc_default="clang"
2571         add_cflags  -fsanitize=thread -pie
2572         add_ldflags -fsanitize=thread -pie
2573     ;;
2574     clang-usan)
2575         cc_default="clang"
2576         add_cflags  -fsanitize=undefined -O1
2577         add_ldflags -fsanitize=undefined
2578     ;;
2579     gcc-asan)
2580         cc_default="gcc"
2581         add_cflags  -fsanitize=address
2582         add_ldflags -fsanitize=address
2583     ;;
2584     gcc-tsan)
2585         cc_default="gcc"
2586         add_cflags  -fsanitize=thread -pie -fPIC
2587         add_ldflags -fsanitize=thread -pie -fPIC
2588     ;;
2589     gcc-usan)
2590         cc_default="gcc"
2591         add_cflags  -fsanitize=undefined
2592         add_ldflags -fsanitize=undefined
2593     ;;
2594     valgrind-massif)
2595         target_exec_default="valgrind"
2596         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2597     ;;
2598     valgrind-memcheck)
2599         target_exec_default="valgrind"
2600         target_exec_args="--track-origins=yes --leak-check=full"
2601     ;;
2602     msvc)
2603         # Check whether the current MSVC version needs the C99 converter.
2604         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2605         # support enough of C99 to build libav. Default to the new
2606         # behaviour if the regexp was unable to match anything, since this
2607         # successfully parses the version number of existing supported
2608         # versions that require the converter (MSVC 2010 and 2012).
2609         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2610         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2611             cc_default="cl"
2612         else
2613             cc_default="c99wrap cl"
2614         fi
2615         ld_default="link"
2616         nm_default="dumpbin -symbols"
2617         ar_default="lib"
2618         target_os_default="win32"
2619         # Use a relative path for TMPDIR. This makes sure all the
2620         # ffconf temp files are written with a relative path, avoiding
2621         # issues with msys/win32 path conversion for MSVC parameters
2622         # such as -Fo<file> or -out:<file>.
2623         TMPDIR=.
2624     ;;
2625     icl)
2626         cc_default="icl"
2627         ld_default="xilink"
2628         nm_default="dumpbin -symbols"
2629         ar_default="xilib"
2630         target_os_default="win32"
2631         TMPDIR=.
2632     ;;
2633     gcov)
2634         add_cflags  -fprofile-arcs -ftest-coverage
2635         add_ldflags -fprofile-arcs -ftest-coverage
2636     ;;
2637     hardened)
2638         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2639         add_cflags   -fno-strict-overflow -fstack-protector-all
2640         add_ldflags  -Wl,-z,relro -Wl,-z,now
2641     ;;
2642     ?*)
2643         die "Unknown toolchain $toolchain"
2644     ;;
2645 esac
2646
2647 test -n "$cross_prefix" && enable cross_compile
2648
2649 if enabled cross_compile; then
2650     test -n "$arch" && test -n "$target_os" ||
2651         die "Must specify target arch and OS when cross-compiling"
2652 fi
2653
2654 ar_default="${cross_prefix}${ar_default}"
2655 cc_default="${cross_prefix}${cc_default}"
2656 nm_default="${cross_prefix}${nm_default}"
2657 pkg_config_default="${cross_prefix}${pkg_config_default}"
2658 ranlib="${cross_prefix}${ranlib}"
2659 strip="${cross_prefix}${strip}"
2660
2661 sysinclude_default="${sysroot}/usr/include"
2662
2663 set_default arch cc pkg_config sysinclude target_exec target_os
2664 enabled cross_compile || host_cc_default=$cc
2665 set_default host_cc
2666
2667 if ! $pkg_config --version >/dev/null 2>&1; then
2668     warn "$pkg_config not found, library detection may fail."
2669     pkg_config=false
2670 fi
2671
2672 exesuf() {
2673     case $1 in
2674         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2675     esac
2676 }
2677
2678 EXESUF=$(exesuf $target_os)
2679 HOSTEXESUF=$(exesuf $host_os)
2680
2681 # set temporary file name
2682 : ${TMPDIR:=$TEMPDIR}
2683 : ${TMPDIR:=$TMP}
2684 : ${TMPDIR:=/tmp}
2685
2686 if ! check_cmd mktemp -u XXXXXX; then
2687     # simple replacement for missing mktemp
2688     # NOT SAFE FOR GENERAL USE
2689     mktemp(){
2690         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2691     }
2692 fi
2693
2694 tmpfile(){
2695     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2696         (set -C; exec > $tmp) 2>/dev/null ||
2697         die "Unable to create temporary file in $TMPDIR."
2698     append TMPFILES $tmp
2699     eval $1=$tmp
2700 }
2701
2702 trap 'rm -f -- $TMPFILES' EXIT
2703
2704 tmpfile TMPASM .asm
2705 tmpfile TMPC   .c
2706 tmpfile TMPE   $EXESUF
2707 tmpfile TMPH   .h
2708 tmpfile TMPO   .o
2709 tmpfile TMPS   .S
2710 tmpfile TMPSH  .sh
2711 tmpfile TMPV   .ver
2712
2713 unset -f mktemp
2714
2715 chmod +x $TMPE
2716
2717 # make sure we can execute files in $TMPDIR
2718 cat > $TMPSH 2>> $logfile <<EOF
2719 #! /bin/sh
2720 EOF
2721 chmod +x $TMPSH >> $logfile 2>&1
2722 if ! $TMPSH >> $logfile 2>&1; then
2723     cat <<EOF
2724 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2725 variable to another directory and make sure that it is not mounted noexec.
2726 EOF
2727     die "Sanity test failed."
2728 fi
2729
2730 armasm_flags(){
2731     for flag; do
2732         case $flag in
2733             # Filter out MSVC cl.exe options from cflags that shouldn't
2734             # be passed to gas-preprocessor
2735             -M[TD]*)                                            ;;
2736             *)                  echo $flag                      ;;
2737         esac
2738    done
2739 }
2740
2741 ccc_flags(){
2742     for flag; do
2743         case $flag in
2744             -std=c99)           echo -c99                       ;;
2745             -mcpu=*)            echo -arch ${flag#*=}           ;;
2746             -mieee)             echo -ieee                      ;;
2747             -O*|-fast)          echo $flag                      ;;
2748             -fno-math-errno)    echo -assume nomath_errno       ;;
2749             -g)                 echo -g3                        ;;
2750             -Wall)              echo -msg_enable level2         ;;
2751             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2752             -Wl,*)              echo $flag                      ;;
2753             -f*|-W*)                                            ;;
2754             *)                  echo $flag                      ;;
2755         esac
2756    done
2757 }
2758
2759 cparser_flags(){
2760     for flag; do
2761         case $flag in
2762             -Wno-switch)             echo -Wno-switch-enum ;;
2763             -Wno-format-zero-length) ;;
2764             -Wdisabled-optimization) ;;
2765             -Wno-pointer-sign)       echo -Wno-other ;;
2766             *)                       echo $flag ;;
2767         esac
2768     done
2769 }
2770
2771 msvc_common_flags(){
2772     for flag; do
2773         case $flag in
2774             # In addition to specifying certain flags under the compiler
2775             # specific filters, they must be specified here as well or else the
2776             # generic catch all at the bottom will print the original flag.
2777             -Wall)                ;;
2778             -std=c99)             ;;
2779             # Common flags
2780             -fomit-frame-pointer) ;;
2781             -g)                   echo -Z7 ;;
2782             -fno-math-errno)      ;;
2783             -fno-common)          ;;
2784             -fno-signed-zeros)    ;;
2785             -fPIC)                ;;
2786             -mthumb)              ;;
2787             -march=*)             ;;
2788             -lz)                  echo zlib.lib ;;
2789             -lavifil32)           echo vfw32.lib ;;
2790             -lavicap32)           echo vfw32.lib user32.lib ;;
2791             -l*)                  echo ${flag#-l}.lib ;;
2792             -L*)                  echo -libpath:${flag#-L} ;;
2793             *)                    echo $flag ;;
2794         esac
2795     done
2796 }
2797
2798 msvc_flags(){
2799     msvc_common_flags "$@"
2800     for flag; do
2801         case $flag in
2802             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2803                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2804                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2805                                        -wd4273 -wd4554 -wd4701 ;;
2806         esac
2807     done
2808 }
2809
2810 icl_flags(){
2811     msvc_common_flags "$@"
2812     for flag; do
2813         case $flag in
2814             # Despite what Intel's documentation says -Wall, which is supported
2815             # on Windows, does enable remarks so disable them here.
2816             -Wall)                echo $flag -Qdiag-disable:remark ;;
2817             -std=c99)             echo -Qstd=c99 ;;
2818         esac
2819     done
2820 }
2821
2822 pgi_flags(){
2823     for flag; do
2824         case $flag in
2825             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2826             -fomit-frame-pointer) echo -Mnoframe ;;
2827             -g)                   echo -gopt ;;
2828             *)                    echo $flag ;;
2829         esac
2830     done
2831 }
2832
2833 suncc_flags(){
2834     for flag; do
2835         case $flag in
2836             -march=*|-mcpu=*)
2837                 case "${flag#*=}" in
2838                     native)                   echo -xtarget=native       ;;
2839                     v9|niagara)               echo -xarch=sparc          ;;
2840                     ultrasparc)               echo -xarch=sparcvis       ;;
2841                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2842                     i586|pentium)             echo -xchip=pentium        ;;
2843                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2844                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2845                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2846                     pentium4*)          echo -xtarget=pentium4           ;;
2847                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2848                     *-sse3)             echo -xarch=sse3                 ;;
2849                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2850                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2851                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2852                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2853                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2854                     k8|opteron|athlon64|athlon-fx)
2855                                                echo -xarch=sse2a         ;;
2856                     athlon*)                   echo -xarch=pentium_proa  ;;
2857                 esac
2858                 ;;
2859             -std=c99)             echo -xc99              ;;
2860             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2861             -fPIC)                echo -KPIC -xcode=pic32 ;;
2862             -W*,*)                echo $flag              ;;
2863             -f*-*|-W*|-mimpure-text)                      ;;
2864             -shared)              echo -G                 ;;
2865             *)                    echo $flag              ;;
2866         esac
2867     done
2868 }
2869
2870 tms470_flags(){
2871     for flag; do
2872         case $flag in
2873             -march=*|-mcpu=*)
2874                 case "${flag#*=}" in
2875                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2876                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2877                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2878                     armv6*|arm11*)          echo -mv=6   ;;
2879                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2880                                             echo -mv=5e  ;;
2881                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2882                 esac
2883                 ;;
2884             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2885             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2886             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2887             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2888             -msoft-float)   echo --float_support=vfplib       ;;
2889             -O[0-3]|-mf=*)  echo $flag                        ;;
2890             -g)             echo -g -mn                       ;;
2891             -pds=*)         echo $flag                        ;;
2892             -D*|-I*)        echo $flag                        ;;
2893             --gcc|--abi=*)  echo $flag                        ;;
2894             -me)            echo $flag                        ;;
2895         esac
2896     done
2897 }
2898
2899 probe_cc(){
2900     pfx=$1
2901     _cc=$2
2902
2903     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2904     unset _ld_o _ldflags _ld_lib _ld_path
2905     unset _depflags _DEPCMD _DEPFLAGS
2906     _flags_filter=echo
2907
2908     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2909         _type=llvm_gcc
2910         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2911         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2912         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2913         _cflags_speed='-O3'
2914         _cflags_size='-Os'
2915     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2916         _type=gcc
2917         gcc_version=$($_cc --version | head -n1)
2918         gcc_basever=$($_cc -dumpversion)
2919         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2920         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2921         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2922         if ! $_cc -dumpversion | grep -q '^2\.'; then
2923             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2924         fi
2925         _cflags_speed='-O3'
2926         _cflags_size='-Os'
2927     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2928         _type=icc
2929         _ident=$($_cc --version | head -n1)
2930         _depflags='-MMD'
2931         _cflags_speed='-O3'
2932         _cflags_size='-Os'
2933         _cflags_noopt='-O1'
2934     elif $_cc -v 2>&1 | grep -q xlc; then
2935         _type=xlc
2936         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2937         _cflags_speed='-O5'
2938         _cflags_size='-O5 -qcompact'
2939     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2940         _type=ccc
2941         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2942         _DEPFLAGS='-M'
2943         _cflags_speed='-fast'
2944         _cflags_size='-O1'
2945         _flags_filter=ccc_flags
2946     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2947         test -d "$sysroot" || die "No valid sysroot specified."
2948         _type=armcc
2949         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
2950         armcc_conf="$PWD/armcc.conf"
2951         $_cc --arm_linux_configure                 \
2952              --arm_linux_config_file="$armcc_conf" \
2953              --configure_sysroot="$sysroot"        \
2954              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2955              die "Error creating armcc configuration file."
2956         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2957         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2958         as_default="${cross_prefix}gcc"
2959         _depflags='-MMD'
2960         _cflags_speed='-O3'
2961         _cflags_size='-Os'
2962     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2963         _type=tms470
2964         _ident=$($_cc -version | head -n1 | tr -s ' ')
2965         _flags='--gcc --abi=eabi -me'
2966         _cc_e='-ppl -fe=$@'
2967         _cc_o='-fe=$@'
2968         _depflags='-ppa -ppd=$(@:.o=.d)'
2969         _cflags_speed='-O3 -mf=5'
2970         _cflags_size='-O3 -mf=2'
2971         _flags_filter=tms470_flags
2972     elif $_cc -v 2>&1 | grep -q clang; then
2973         _type=clang
2974         _ident=$($_cc --version | head -n1)
2975         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2976         _cflags_speed='-O3'
2977         _cflags_size='-Os'
2978     elif $_cc -V 2>&1 | grep -q Sun; then
2979         _type=suncc
2980         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2981         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2982         _DEPFLAGS='-xM1 -xc99'
2983         _ldflags='-std=c99'
2984         _cflags_speed='-O5'
2985         _cflags_size='-O5 -xspace'
2986         _flags_filter=suncc_flags
2987     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2988         _type=pathscale
2989         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2990         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2991         _cflags_speed='-O2'
2992         _cflags_size='-Os'
2993         _flags_filter='filter_out -Wdisabled-optimization'
2994     elif $_cc -v 2>&1 | grep -q Open64; then
2995         _type=open64
2996         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2997         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2998         _cflags_speed='-O2'
2999         _cflags_size='-Os'
3000         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3001     elif $_cc -V 2>&1 | grep -q Portland; then
3002         _type=pgi
3003         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3004         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3005         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3006         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3007         _cflags_noopt="-O1"
3008         _flags_filter=pgi_flags
3009     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3010         _type=armasm
3011         _ident=$($_cc | head -n1)
3012         # 4509: "This form of conditional instruction is deprecated"
3013         _flags="-nologo -ignore 4509"
3014         _flags_filter=armasm_flags
3015     elif $_cc 2>&1 | grep -q Microsoft; then
3016         _type=msvc
3017         _ident=$($_cc 2>&1 | head -n1)
3018         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3019         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3020         _cflags_speed="-O2"
3021         _cflags_size="-O1"
3022         if $_cc 2>&1 | grep -q Linker; then
3023             _ld_o='-out:$@'
3024         else
3025             _ld_o='-Fe$@'
3026         fi
3027         _cc_o='-Fo$@'
3028         _cc_e='-P -Fi$@'
3029         _flags_filter=msvc_flags
3030         _ld_lib='lib%.a'
3031         _ld_path='-libpath:'
3032         _flags='-nologo'
3033         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3034     elif $_cc 2>&1 | grep -q Intel; then
3035         _type=icl
3036         _ident=$($_cc 2>&1 | head -n1)
3037         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3038         # Not only is O3 broken on 13.x+ but it is slower on all previous
3039         # versions (tested) as well.
3040         _cflags_speed="-O2"
3041         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3042         if $_cc 2>&1 | grep -q Linker; then
3043             _ld_o='-out:$@'
3044         else
3045             _ld_o='-Fe$@'
3046         fi
3047         _cc_o='-Fo$@'
3048         _cc_e='-P'
3049         _flags_filter=icl_flags
3050         _ld_lib='lib%.a'
3051         _ld_path='-libpath:'
3052         # -Qdiag-error to make icl error when seeing certain unknown arguments
3053         _flags='-nologo -Qdiag-error:4044,10157'
3054         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3055         # with MSVC which enables it by default.
3056         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3057     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3058         _type=cparser
3059         _ident=$($_cc --version | head -n1)
3060         _depflags='-MMD'
3061         _cflags_speed='-O4'
3062         _cflags_size='-O2'
3063         _flags_filter=cparser_flags
3064     fi
3065
3066     eval ${pfx}_type=\$_type
3067     eval ${pfx}_ident=\$_ident
3068 }
3069
3070 set_ccvars(){
3071     eval ${1}_C=\${_cc_c-\${${1}_C}}
3072     eval ${1}_E=\${_cc_e-\${${1}_E}}
3073     eval ${1}_O=\${_cc_o-\${${1}_O}}
3074
3075     if [ -n "$_depflags" ]; then
3076         eval ${1}_DEPFLAGS=\$_depflags
3077     else
3078         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3079         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3080         eval DEP${1}FLAGS=\$_flags
3081     fi
3082 }
3083
3084 probe_cc cc "$cc"
3085 cflags_filter=$_flags_filter
3086 cflags_speed=$_cflags_speed
3087 cflags_size=$_cflags_size
3088 cflags_noopt=$_cflags_noopt
3089 add_cflags $_flags $_cflags
3090 cc_ldflags=$_ldflags
3091 set_ccvars CC
3092
3093 probe_cc hostcc "$host_cc"
3094 host_cflags_filter=$_flags_filter
3095 add_host_cflags  $_flags $_cflags
3096 set_ccvars HOSTCC
3097
3098 test -n "$cc_type" && enable $cc_type ||
3099     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3100
3101 : ${as_default:=$cc}
3102 : ${dep_cc_default:=$cc}
3103 : ${ld_default:=$cc}
3104 : ${host_ld_default:=$host_cc}
3105 set_default ar as dep_cc ld host_ld
3106
3107 probe_cc as "$as"
3108 asflags_filter=$_flags_filter
3109 add_asflags $_flags $_cflags
3110 set_ccvars AS
3111
3112 probe_cc ld "$ld"
3113 ldflags_filter=$_flags_filter
3114 add_ldflags $_flags $_ldflags
3115 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3116 LD_O=${_ld_o-$LD_O}
3117 LD_LIB=${_ld_lib-$LD_LIB}
3118 LD_PATH=${_ld_path-$LD_PATH}
3119
3120 probe_cc hostld "$host_ld"
3121 host_ldflags_filter=$_flags_filter
3122 add_host_ldflags $_flags $_ldflags
3123 HOSTLD_O=${_ld_o-$HOSTLD_O}
3124
3125 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3126     probe_cc depcc "$dep_cc"
3127     CCDEP=${_DEPCMD:-$DEPCMD}
3128     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3129     DEPCCFLAGS=$_flags
3130 fi
3131
3132 if $ar 2>&1 | grep -q Microsoft; then
3133     arflags="-nologo"
3134     ar_o='-out:$@'
3135 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3136     arflags="rq"
3137     ar_o='$@'
3138 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3139     arflags='-Xany -r -c'
3140     ar_o='$@'
3141 else
3142     arflags="rc"
3143     ar_o='$@'
3144 fi
3145
3146 add_cflags $extra_cflags
3147 add_asflags $extra_cflags
3148
3149 if test -n "$sysroot"; then
3150     case "$cc_type" in
3151         gcc|llvm_gcc|clang)
3152             add_cppflags --sysroot="$sysroot"
3153             add_ldflags --sysroot="$sysroot"
3154         ;;
3155         tms470)
3156             add_cppflags -I"$sysinclude"
3157             add_ldflags  --sysroot="$sysroot"
3158         ;;
3159     esac
3160 fi
3161
3162 if test "$cpu" = host; then
3163     enabled cross_compile &&
3164         die "--cpu=host makes no sense when cross-compiling."
3165
3166     case "$cc_type" in
3167         gcc|llvm_gcc)
3168             check_native(){
3169                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3170                 sed -n "/cc1.*$1=/{
3171                             s/.*$1=\\([^ ]*\\).*/\\1/
3172                             p
3173                             q
3174                         }" $TMPE
3175             }
3176             cpu=$(check_native -march || check_native -mcpu)
3177         ;;
3178     esac
3179
3180     test "${cpu:-host}" = host &&
3181         die "--cpu=host not supported with compiler $cc"
3182 fi
3183
3184 # Deal with common $arch aliases
3185 case "$arch" in
3186     aarch64|arm64)
3187         arch="aarch64"
3188     ;;
3189     arm*)
3190         arch="arm"
3191     ;;
3192     mips*|IP*)
3193         arch="mips"
3194     ;;
3195     parisc*|hppa*)
3196         arch="parisc"
3197     ;;
3198     "Power Macintosh"|ppc*|powerpc*)
3199         arch="ppc"
3200     ;;
3201     s390|s390x)
3202         arch="s390"
3203     ;;
3204     sh4|sh)
3205         arch="sh4"
3206     ;;
3207     sun4u|sparc*)
3208         arch="sparc"
3209     ;;
3210     tilegx|tile-gx)
3211         arch="tilegx"
3212     ;;
3213     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3214         arch="x86"
3215     ;;
3216 esac
3217
3218 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3219 enable $arch
3220
3221 # Add processor-specific flags
3222 if enabled aarch64; then
3223
3224     case $cpu in
3225         armv*)
3226             cpuflags="-march=$cpu"
3227         ;;
3228         *)
3229             cpuflags="-mcpu=$cpu"
3230         ;;
3231     esac
3232
3233 elif enabled alpha; then
3234
3235     cpuflags="-mcpu=$cpu"
3236
3237 elif enabled arm; then
3238
3239     check_arm_arch() {
3240         check_cpp_condition stddef.h \
3241             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3242             $cpuflags
3243     }
3244
3245     probe_arm_arch() {
3246         if   check_arm_arch 4;        then echo armv4;
3247         elif check_arm_arch 4T;       then echo armv4t;
3248         elif check_arm_arch 5;        then echo armv5;
3249         elif check_arm_arch 5E;       then echo armv5e;
3250         elif check_arm_arch 5T;       then echo armv5t;
3251         elif check_arm_arch 5TE;      then echo armv5te;
3252         elif check_arm_arch 5TEJ;     then echo armv5te;
3253         elif check_arm_arch 6;        then echo armv6;
3254         elif check_arm_arch 6J;       then echo armv6j;
3255         elif check_arm_arch 6K;       then echo armv6k;
3256         elif check_arm_arch 6Z;       then echo armv6z;
3257         elif check_arm_arch 6ZK;      then echo armv6zk;
3258         elif check_arm_arch 6T2;      then echo armv6t2;
3259         elif check_arm_arch 7;        then echo armv7;
3260         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3261         elif check_arm_arch 7S;       then echo armv7-a;
3262         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3263         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3264         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3265         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3266         fi
3267     }
3268
3269     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3270
3271     case $cpu in
3272         armv*)
3273             cpuflags="-march=$cpu"
3274             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3275         ;;
3276         *)
3277             cpuflags="-mcpu=$cpu"
3278             case $cpu in
3279                 cortex-a*)                               subarch=armv7a  ;;
3280                 cortex-r*)                               subarch=armv7r  ;;
3281                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3282                 arm11*)                                  subarch=armv6   ;;
3283                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3284                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3285                 *)                             subarch=$(probe_arm_arch) ;;
3286             esac
3287         ;;
3288     esac
3289
3290     case "$subarch" in
3291         armv5t*)    enable fast_clz                ;;
3292         armv[6-8]*) enable fast_clz fast_unaligned ;;
3293     esac
3294
3295 elif enabled avr32; then
3296
3297     case $cpu in
3298         ap7[02]0[0-2])
3299             subarch="avr32_ap"
3300             cpuflags="-mpart=$cpu"
3301         ;;
3302         ap)
3303             subarch="avr32_ap"
3304             cpuflags="-march=$cpu"
3305         ;;
3306         uc3[ab]*)
3307             subarch="avr32_uc"
3308             cpuflags="-mcpu=$cpu"
3309         ;;
3310         uc)
3311             subarch="avr32_uc"
3312             cpuflags="-march=$cpu"
3313         ;;
3314     esac
3315
3316 elif enabled bfin; then
3317
3318     cpuflags="-mcpu=$cpu"
3319
3320 elif enabled mips; then
3321
3322     cpuflags="-march=$cpu"
3323
3324 elif enabled ppc; then
3325
3326     disable ldbrx
3327
3328     case $(tolower $cpu) in
3329         601|ppc601|powerpc601)
3330             cpuflags="-mcpu=601"
3331             disable altivec
3332         ;;
3333         603*|ppc603*|powerpc603*)
3334             cpuflags="-mcpu=603"
3335             disable altivec
3336         ;;
3337         604*|ppc604*|powerpc604*)
3338             cpuflags="-mcpu=604"
3339             disable altivec
3340         ;;
3341         g3|75*|ppc75*|powerpc75*)
3342             cpuflags="-mcpu=750"
3343             disable altivec
3344         ;;
3345         g4|745*|ppc745*|powerpc745*)
3346             cpuflags="-mcpu=7450"
3347             disable vsx
3348         ;;
3349         74*|ppc74*|powerpc74*)
3350             cpuflags="-mcpu=7400"
3351             disable vsx
3352         ;;
3353         g5|970|ppc970|powerpc970)
3354             cpuflags="-mcpu=970"
3355             disable vsx
3356         ;;
3357         power[3-6]*)
3358             cpuflags="-mcpu=$cpu"
3359             disable vsx
3360         ;;
3361         power[7-8]*)
3362             cpuflags="-mcpu=$cpu"
3363             enable ldbrx
3364         ;;
3365         cell)
3366             cpuflags="-mcpu=cell"
3367             enable ldbrx
3368             disable vsx
3369         ;;
3370         e500mc)
3371             cpuflags="-mcpu=e500mc"
3372             disable altivec
3373         ;;
3374         e500v2)
3375             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3376             disable altivec
3377             disable dcbzl
3378         ;;
3379         e500)
3380             cpuflags="-mcpu=8540 -mhard-float"
3381             disable altivec
3382             disable dcbzl
3383         ;;
3384     esac
3385
3386 elif enabled sparc; then
3387
3388     case $cpu in
3389         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3390             cpuflags="-mcpu=$cpu"
3391         ;;
3392         ultrasparc*|niagara[234])
3393             cpuflags="-mcpu=$cpu"
3394         ;;
3395     esac
3396
3397 elif enabled x86; then
3398
3399     case $cpu in
3400         i[345]86|pentium)
3401             cpuflags="-march=$cpu"
3402             disable i686
3403             disable mmx
3404         ;;
3405         # targets that do NOT support nopl and conditional mov (cmov)
3406         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3407             cpuflags="-march=$cpu"
3408             disable i686
3409         ;;
3410         # targets that do support nopl and conditional mov (cmov)
3411         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3412             cpuflags="-march=$cpu"
3413             enable i686
3414             enable fast_cmov
3415         ;;
3416         # targets that do support conditional mov but on which it's slow
3417         pentium4|pentium4m|prescott|nocona)
3418             cpuflags="-march=$cpu"
3419             enable i686
3420             disable fast_cmov
3421         ;;
3422     esac
3423
3424 fi
3425
3426 if [ "$cpu" != generic ]; then
3427     add_cflags  $cpuflags
3428     add_asflags $cpuflags
3429 fi
3430
3431 # compiler sanity check
3432 check_exec <<EOF
3433 int main(void){ return 0; }
3434 EOF
3435 if test "$?" != 0; then
3436     echo "$cc is unable to create an executable file."
3437     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3438         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3439         echo "Only do this if you know what cross compiling means."
3440     fi
3441     die "C compiler test failed."
3442 fi
3443
3444 add_cppflags -D_ISOC99_SOURCE
3445 check_cflags -std=c99
3446 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3447 #include <stdlib.h>
3448 EOF
3449 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3450 #include <stdlib.h>
3451 EOF
3452
3453 add_host_cppflags -D_ISOC99_SOURCE
3454 check_host_cflags -std=c99
3455 check_host_cflags -Wall
3456 check_host_cflags -O3
3457
3458 check_64bit(){
3459     arch32=$1
3460     arch64=$2
3461     expr=$3
3462     check_code cc "" "int test[2*($expr) - 1]" &&
3463         subarch=$arch64 || subarch=$arch32
3464 }
3465
3466 case "$arch" in
3467     aarch64|alpha|ia64)
3468         spic=$shared
3469     ;;
3470     mips)
3471         check_64bit mips mips64 '_MIPS_SIM > 1'
3472         spic=$shared
3473     ;;
3474     parisc)
3475         check_64bit parisc parisc64 'sizeof(void *) > 4'
3476         spic=$shared
3477     ;;
3478     ppc)
3479         check_64bit ppc ppc64 'sizeof(void *) > 4'
3480         spic=$shared
3481     ;;
3482     s390)
3483         check_64bit s390 s390x 'sizeof(void *) > 4'
3484         spic=$shared
3485     ;;
3486     sparc)
3487         check_64bit sparc sparc64 'sizeof(void *) > 4'
3488         spic=$shared
3489     ;;
3490     x86)
3491         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3492         if test "$subarch" = "x86_64"; then
3493             spic=$shared
3494         fi
3495     ;;
3496 esac
3497
3498 enable $subarch
3499 enabled spic && enable_weak pic
3500
3501 # OS specific
3502 case $target_os in
3503     aix)
3504         SHFLAGS=-shared
3505         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3506         enabled shared && add_ldflags -Wl,-brtl
3507         ;;
3508     android)
3509         disable symver
3510         enable section_data_rel_ro
3511         SLIB_INSTALL_NAME='$(SLIBNAME)'
3512         SLIB_INSTALL_LINKS=
3513         # soname not set on purpose
3514         SHFLAGS=-shared
3515         ;;
3516     haiku)
3517         prefix_default="/boot/common"
3518         network_extralibs="-lnetwork"
3519         host_libs=
3520         ;;
3521     sunos)
3522         SHFLAGS='-shared -Wl,-h,$$(@F)'
3523         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3524         network_extralibs="-lsocket -lnsl"
3525         # When using suncc to build, the Solaris linker will mark
3526         # an executable with each instruction set encountered by
3527         # the Solaris assembler.  As our libraries contain their own
3528         # guards for processor-specific code, instead suppress
3529         # generation of the HWCAPS ELF section on Solaris x86 only.
3530         enabled_all suncc x86 &&
3531             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3532             add_ldflags -Wl,-M,mapfile
3533         nm_default='nm -P -g'
3534         ;;
3535     netbsd)
3536         disable symver
3537         oss_indev_extralibs="-lossaudio"
3538         oss_outdev_extralibs="-lossaudio"
3539         ;;
3540     openbsd|bitrig)
3541         disable symver
3542         SHFLAGS='-shared'
3543         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3544         SLIB_INSTALL_LINKS=
3545         oss_indev_extralibs="-lossaudio"
3546         oss_outdev_extralibs="-lossaudio"
3547         ;;
3548     dragonfly)
3549         disable symver
3550         ;;
3551     freebsd)
3552         ;;
3553     bsd/os)
3554         add_extralibs -lpoll -lgnugetopt
3555         ;;
3556     darwin)
3557         enabled ppc && add_asflags -force_cpusubtype_ALL
3558         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3559         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3560         add_ldflags -Wl,-dynamic,-search_paths_first
3561         SLIBSUF=".dylib"
3562         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3563         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3564         objformat="macho"
3565         enabled x86_64 && objformat="macho64"
3566         enabled_any pic shared ||
3567             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3568         ;;
3569     mingw32*)
3570         if test $target_os = "mingw32ce"; then
3571             disable network
3572         else
3573             target_os=mingw32
3574         fi
3575         LIBTARGET=i386
3576         if enabled x86_64; then
3577             LIBTARGET="i386:x86-64"
3578         elif enabled arm; then
3579             LIBTARGET=arm-wince
3580         fi
3581         check_ldflags -Wl,--nxcompat
3582         check_ldflags -Wl,--dynamicbase
3583         shlibdir_default="$bindir_default"
3584         SLIBPREF=""
3585         SLIBSUF=".dll"
3586         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3587         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3588         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3589         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3590         SLIB_INSTALL_LINKS=
3591         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3592         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3593         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3594         objformat="win32"
3595         dlltool="${cross_prefix}dlltool"
3596         ranlib=:
3597         enable dos_paths
3598         ;;
3599     win32|win64)
3600         disable symver
3601         if enabled shared; then
3602             # Link to the import library instead of the normal static library
3603             # for shared libs.
3604             LD_LIB='%.lib'
3605             # Cannot build both shared and static libs with MSVC or icl.
3606             disable static
3607         fi
3608         shlibdir_default="$bindir_default"
3609         SLIBPREF=""
3610         SLIBSUF=".dll"
3611         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3612         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3613         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3614         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3615         SLIB_INSTALL_LINKS=
3616         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3617         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3618         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3619         objformat="win32"
3620         ranlib=:
3621         enable dos_paths
3622         ;;
3623     cygwin*)
3624         target_os=cygwin
3625         shlibdir_default="$bindir_default"
3626         SLIBPREF="cyg"
3627         SLIBSUF=".dll"
3628         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3629         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3630         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3631         SLIB_INSTALL_LINKS=
3632         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3633         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3634         objformat="win32"
3635         enable dos_paths
3636         ;;
3637     *-dos|freedos|opendos)
3638         network_extralibs="-lsocket"
3639         objformat="coff"
3640         enable dos_paths
3641         add_cppflags -U__STRICT_ANSI__
3642         ;;
3643     linux)
3644         enable dv1394
3645         enable section_data_rel_ro
3646         ;;
3647     irix*)
3648         target_os=irix
3649         ranlib="echo ignoring ranlib"
3650         ;;
3651     os/2*)
3652         ln_s="cp -f"
3653         objformat="aout"
3654         add_cppflags -D_GNU_SOURCE
3655         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3656         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3657         LIBSUF="_s.a"
3658         SLIBPREF=""
3659         SLIBSUF=".dll"
3660         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3661         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3662         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3663             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3664             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3665             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3666             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3667             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3668         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3669             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3670         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3671         enable dos_paths
3672         ;;
3673     gnu/kfreebsd)
3674         add_cppflags -D_BSD_SOURCE
3675         ;;
3676     gnu)
3677         ;;
3678     qnx)
3679         add_cppflags -D_QNX_SOURCE
3680         network_extralibs="-lsocket"
3681         ;;
3682     symbian)
3683         SLIBSUF=".dll"
3684         enable dos_paths
3685         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3686         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3687         add_ldflags -Wl,--target1-abs,--no-undefined \
3688                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3689                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3690         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3691                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3692                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3693         ;;
3694     osf1)
3695         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3696         ;;
3697     minix)
3698         ;;
3699     plan9)
3700         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3701                      -D_REENTRANT_SOURCE        \
3702                      -D_RESEARCH_SOURCE         \
3703                      -DFD_SETSIZE=96            \
3704                      -DHAVE_SOCK_OPTS
3705         add_compat strtod.o strtod=avpriv_strtod
3706         network_extralibs='-lbsd'
3707         exeobjs=compat/plan9/main.o
3708         cp_f='cp'
3709         ;;
3710     none)
3711         ;;
3712     *)
3713         die "Unknown OS '$target_os'."
3714         ;;
3715 esac
3716
3717 # determine libc flavour
3718
3719 probe_libc(){
3720     pfx=$1
3721     pfx_no_=${pfx%_}
3722     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3723     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3724         eval ${pfx}libc_type=uclibc
3725         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3726     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3727         eval ${pfx}libc_type=glibc
3728         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3729     # MinGW headers can be installed on Cygwin, so check for newlib first.
3730     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3731         eval ${pfx}libc_type=newlib
3732         add_${pfx}cppflags -U__STRICT_ANSI__
3733     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3734     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3735         eval ${pfx}libc_type=mingw64
3736         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3737         eval test \$${pfx_no_}cc_type = "gcc" &&
3738             add_${pfx}cppflags -D__printf__=__gnu_printf__
3739     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3740          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3741         eval ${pfx}libc_type=mingw32
3742         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3743             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3744             die "ERROR: MinGW32 runtime version must be >= 3.15."
3745         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3746         eval test \$${pfx_no_}cc_type = "gcc" &&
3747             add_${pfx}cppflags -D__printf__=__gnu_printf__
3748     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3749         eval ${pfx}libc_type=msvcrt
3750         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
3751             if [ "$pfx" = host_ ]; then
3752                 add_host_cppflags -Dsnprintf=_snprintf
3753             else
3754                 add_compat strtod.o strtod=avpriv_strtod
3755                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3756                                              _snprintf=avpriv_snprintf  \
3757                                              vsnprintf=avpriv_vsnprintf
3758             fi
3759         fi
3760         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3761         # 0x601 by default unless something else is set by the user.
3762         # This can easily lead to us detecting functions only present
3763         # in such new versions and producing binaries requiring windows 7.0.
3764         # Therefore explicitly set the default to XP unless the user has
3765         # set something else on the command line.
3766         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3767             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3768     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3769         eval ${pfx}libc_type=klibc
3770     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3771         eval ${pfx}libc_type=bionic
3772     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3773         eval ${pfx}libc_type=solaris
3774         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3775     else
3776         eval ${pfx}libc_type=default
3777         add_${pfx}cppflags -D_DEFAULT_SOURCE
3778     fi
3779 }
3780
3781 probe_libc
3782 test -n "$libc_type" && enable libc_$libc_type
3783 probe_libc host_
3784 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3785
3786 case $libc_type in
3787     bionic)
3788         add_compat strtod.o strtod=avpriv_strtod
3789         ;;
3790 esac
3791
3792 # hacks for compiler/libc/os combinations
3793
3794 if enabled_all tms470 libc_glibc; then
3795     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3796     add_cppflags -D__USER_LABEL_PREFIX__=
3797     add_cppflags -D__builtin_memset=memset
3798     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3799     add_cflags   -pds=48    # incompatible redefinition of macro
3800 fi
3801
3802 if enabled_all ccc libc_glibc; then
3803     add_ldflags -Wl,-z,now  # calls to libots crash without this
3804 fi
3805
3806 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3807     add_cppflags '-I\$(SRC_PATH)/compat/float'
3808
3809 esc(){
3810     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3811 }
3812
3813 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3814
3815 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3816
3817 set_default $PATHS_LIST
3818 set_default nm
3819
3820 # we need to build at least one lib type
3821 if ! enabled_any static shared; then
3822     cat <<EOF
3823 At least one library type must be built.
3824 Specify --enable-static to build the static libraries or --enable-shared to
3825 build the shared libraries as well. To only build the shared libraries specify
3826 --disable-static in addition to --enable-shared.
3827 EOF
3828     exit 1;
3829 fi
3830
3831 die_license_disabled() {
3832     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3833 }
3834
3835 die_license_disabled gpl libcdio
3836 die_license_disabled gpl libx264
3837 die_license_disabled gpl libx265
3838 die_license_disabled gpl libxavs
3839 die_license_disabled gpl libxvid
3840 die_license_disabled gpl x11grab
3841
3842 die_license_disabled nonfree libfaac
3843 die_license_disabled nonfree libfdk_aac
3844 die_license_disabled nonfree nvenc
3845 die_license_disabled nonfree openssl
3846
3847 die_license_disabled version3 libopencore_amrnb
3848 die_license_disabled version3 libopencore_amrwb
3849 die_license_disabled version3 libvo_aacenc
3850 die_license_disabled version3 libvo_amrwbenc
3851
3852 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3853
3854 disabled optimizations || check_cflags -fomit-frame-pointer
3855
3856 enable_weak_pic() {
3857     disabled pic && return
3858     enable pic
3859     add_cppflags -DPIC
3860     case "$target_os" in
3861     mingw*|cygwin*)
3862         ;;
3863     *)
3864         add_cflags -fPIC
3865         ;;
3866     esac
3867     add_asflags  -fPIC
3868 }
3869
3870 enabled pic && enable_weak_pic
3871
3872 check_cc <<EOF || die "Symbol mangling check failed."
3873 int ff_extern;
3874 EOF
3875 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3876 extern_prefix=${sym%%ff_extern*}
3877
3878 check_cc <<EOF && enable_weak inline_asm
3879 void foo(void) { __asm__ volatile ("" ::); }
3880 EOF
3881
3882 _restrict=
3883 for restrict_keyword in restrict __restrict__ __restrict; do
3884     check_cc <<EOF && _restrict=$restrict_keyword && break
3885 void foo(char * $restrict_keyword p);
3886 EOF
3887 done
3888
3889 check_cc <<EOF && enable pragma_deprecated
3890 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3891 EOF
3892
3893 check_cc <<EOF && enable attribute_packed
3894 struct { int x; } __attribute__((packed)) x;
3895 EOF
3896
3897 check_cc <<EOF && enable attribute_may_alias
3898 union { int x; } __attribute__((may_alias)) x;
3899 EOF
3900
3901 check_cc <<EOF || die "endian test failed"
3902 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3903 EOF
3904 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3905
3906 check_gas() {
3907     log "check_gas using '$as' as AS"
3908     # :vararg is used on aarch64, arm and ppc altivec
3909     check_as <<EOF || return 1
3910 .macro m n, y:vararg=0
3911 \n: .int \y
3912 .endm
3913 m x
3914 EOF
3915     # .altmacro is only used in arm asm
3916     ! enabled arm || check_as <<EOF || return 1
3917 .altmacro
3918 EOF
3919     enable gnu_as
3920     return 0
3921 }
3922
3923 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
3924     nogas=:
3925     enabled_any arm aarch64 && nogas=die
3926     enabled_all ppc altivec && nogas=warn
3927     as_noop=-v
3928
3929     case $as_type in
3930         arm*) gaspp_as_type=armasm; as_noop=-h ;;
3931         gcc)  gaspp_as_type=gas ;;
3932         *)    gaspp_as_type=$as_type ;;
3933     esac
3934
3935     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
3936
3937     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
3938         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
3939
3940     if ! check_gas ; then
3941         as=${gas:=$as}
3942         check_gas || \
3943             $nogas "GNU assembler not found, install/update gas-preprocessor"
3944     fi
3945
3946     check_as <<EOF && enable as_func
3947 .func test
3948 .endfunc
3949 EOF
3950 fi
3951
3952 check_inline_asm inline_asm_labels '"1:\n"'
3953
3954 if enabled aarch64; then
3955     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3956     # internal assembler in clang 3.3 does not support this instruction
3957     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3958     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3959
3960     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3961
3962 elif enabled alpha; then
3963
3964     check_cflags -mieee
3965
3966 elif enabled arm; then
3967
3968     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3969     enabled thumb && check_cflags -mthumb || check_cflags -marm
3970
3971     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3972         enable vfp_args
3973     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3974         case "${cross_prefix:-$cc}" in
3975             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3976             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3977 __asm__ (".eabi_attribute 28, 1");
3978 int main(void) { return 0; }
3979 EOF
3980         esac
3981         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3982     fi
3983
3984     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3985     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3986     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3987     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3988     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3989     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3990
3991     [ $target_os = linux ] || [ $target_os = android ] ||
3992         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3993             $ARCH_EXT_LIST_ARM
3994
3995     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3996
3997     check_as <<EOF && enable as_dn_directive
3998 ra .dn d0.i16
3999 .unreq ra
4000 EOF
4001
4002     # llvm's integrated assembler supports .object_arch from llvm 3.5
4003     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4004 .object_arch armv4
4005 EOF
4006
4007     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4008
4009 elif enabled mips; then
4010
4011     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4012
4013 elif enabled parisc; then
4014
4015     if enabled gcc; then
4016         case $($cc -dumpversion) in
4017             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4018         esac
4019     fi
4020
4021 elif enabled ppc; then
4022
4023     enable local_aligned_8 local_aligned_16
4024
4025     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4026     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4027     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4028     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4029
4030     # AltiVec flags: The FSF version of GCC differs from the Apple version
4031     if enabled altivec; then
4032         check_cflags -maltivec -mabi=altivec &&
4033         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4034         check_cflags -faltivec
4035
4036         # check if our compiler supports Motorola AltiVec C API
4037         check_cc <<EOF || disable altivec
4038 $inc_altivec_h
4039 int main(void) {
4040     vector signed int v1 = (vector signed int) { 0 };
4041     vector signed int v2 = (vector signed int) { 1 };
4042     v1 = vec_add(v1, v2);
4043     return 0;
4044 }
4045 EOF
4046
4047         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4048     fi
4049
4050     if enabled vsx; then
4051         check_cflags -mvsx &&
4052         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4053     fi
4054
4055     if enabled power8; then
4056         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8