w32pthreads: use the CONDITION_VARIABLE typedef if available
[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-dxva2           enable DXVA2 code
137   --enable-vaapi           enable VAAPI code
138   --enable-vda             enable VDA code
139   --enable-vdpau           enable VDPAU code
140
141 Individual component options:
142   --disable-everything     disable all components listed below
143   --disable-encoder=NAME   disable encoder NAME
144   --enable-encoder=NAME    enable encoder NAME
145   --disable-encoders       disable all encoders
146   --disable-decoder=NAME   disable decoder NAME
147   --enable-decoder=NAME    enable decoder NAME
148   --disable-decoders       disable all decoders
149   --disable-hwaccel=NAME   disable hwaccel NAME
150   --enable-hwaccel=NAME    enable hwaccel NAME
151   --disable-hwaccels       disable all hwaccels
152   --disable-muxer=NAME     disable muxer NAME
153   --enable-muxer=NAME      enable muxer NAME
154   --disable-muxers         disable all muxers
155   --disable-demuxer=NAME   disable demuxer NAME
156   --enable-demuxer=NAME    enable demuxer NAME
157   --disable-demuxers       disable all demuxers
158   --enable-parser=NAME     enable parser NAME
159   --disable-parser=NAME    disable parser NAME
160   --disable-parsers        disable all parsers
161   --enable-bsf=NAME        enable bitstream filter NAME
162   --disable-bsf=NAME       disable bitstream filter NAME
163   --disable-bsfs           disable all bitstream filters
164   --enable-protocol=NAME   enable protocol NAME
165   --disable-protocol=NAME  disable protocol NAME
166   --disable-protocols      disable all protocols
167   --enable-indev=NAME      enable input device NAME
168   --disable-indev=NAME     disable input device NAME
169   --disable-indevs         disable input devices
170   --enable-outdev=NAME     enable output device NAME
171   --disable-outdev=NAME    disable output device NAME
172   --disable-outdevs        disable output devices
173   --disable-devices        disable all devices
174   --enable-filter=NAME     enable filter NAME
175   --disable-filter=NAME    disable filter NAME
176   --disable-filters        disable all filters
177
178 External library support:
179   --enable-avisynth        enable reading of AviSynth script files [no]
180   --enable-bzlib           enable bzlib [autodetect]
181   --enable-frei0r          enable frei0r video filtering
182   --enable-gnutls          enable gnutls [no]
183   --enable-libbs2b         enable bs2b DSP library [no]
184   --enable-libcdio         enable audio CD grabbing with libcdio
185   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
186                            and libraw1394 [no]
187   --enable-libfaac         enable AAC encoding via libfaac [no]
188   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
189   --enable-libfreetype     enable libfreetype [no]
190   --enable-libgsm          enable GSM de/encoding via libgsm [no]
191   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
192   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
193   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
194   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
195   --enable-libopencv       enable video filtering via libopencv [no]
196   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
197   --enable-libopus         enable Opus de/encoding via libopus [no]
198   --enable-libpulse        enable Pulseaudio input via libpulse [no]
199   --enable-librtmp         enable RTMP[E] support via librtmp [no]
200   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
201   --enable-libspeex        enable Speex de/encoding via libspeex [no]
202   --enable-libtheora       enable Theora encoding via libtheora [no]
203   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
204   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
205   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
206   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
207   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
208   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
209   --enable-libwebp         enable WebP encoding via libwebp [no]
210   --enable-libx264         enable H.264 encoding via x264 [no]
211   --enable-libx265         enable HEVC encoding via x265 [no]
212   --enable-libxavs         enable AVS encoding via xavs [no]
213   --enable-libxvid         enable Xvid encoding via xvidcore,
214                            native MPEG-4/Xvid encoder exists [no]
215   --enable-openssl         enable openssl [no]
216   --enable-x11grab         enable X11 grabbing [no]
217   --enable-zlib            enable zlib [autodetect]
218
219 Toolchain options:
220   --arch=ARCH              select architecture [$arch]
221   --cpu=CPU                select the minimum required CPU (affects
222                            instruction selection, may crash on older CPUs)
223   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
224   --enable-cross-compile   assume a cross-compiler is used
225   --sysroot=PATH           root of cross-build tree
226   --sysinclude=PATH        location of cross-build system headers
227   --target-os=OS           compiler targets OS [$target_os]
228   --target-exec=CMD        command to run executables on target
229   --target-path=DIR        path to view of build directory on target
230   --target-samples=DIR     path to samples directory on target
231   --toolchain=NAME         set tool defaults according to NAME
232   --nm=NM                  use nm tool
233   --ar=AR                  use archive tool AR [$ar_default]
234   --as=AS                  use assembler AS [$as_default]
235   --cc=CC                  use C compiler CC [$cc_default]
236   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
237   --ld=LD                  use linker LD
238   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
239   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
240   --host-cc=HOSTCC         use host C compiler HOSTCC
241   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
242   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
243   --host-ld=HOSTLD         use host linker HOSTLD
244   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
245   --host-libs=HLIBS        use libs HLIBS when linking for host
246   --host-os=OS             compiler host OS [$target_os]
247   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
248   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
249   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
250   --extra-libs=ELIBS       add ELIBS [$ELIBS]
251   --extra-version=STRING   version string suffix []
252   --optflags=OPTFLAGS      override optimization-related compiler flags
253   --build-suffix=SUFFIX    library name suffix []
254   --enable-pic             build position-independent code
255   --enable-thumb           compile for Thumb instruction set
256   --enable-lto             use link-time optimization
257
258 Advanced options (experts only):
259   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
260   --disable-symver         disable symbol versioning
261   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
262   --disable-safe-bitstream-reader
263                            disable buffer boundary checking in bitreaders
264                            (faster, but may crash)
265   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
266   --enable-sram            allow use of on-chip SRAM
267
268 Optimization options (experts only):
269   --disable-asm            disable all assembly optimizations
270   --disable-altivec        disable AltiVec optimizations
271   --disable-amd3dnow       disable 3DNow! optimizations
272   --disable-amd3dnowext    disable 3DNow! extended optimizations
273   --disable-mmx            disable MMX optimizations
274   --disable-mmxext         disable MMXEXT optimizations
275   --disable-sse            disable SSE optimizations
276   --disable-sse2           disable SSE2 optimizations
277   --disable-sse3           disable SSE3 optimizations
278   --disable-ssse3          disable SSSE3 optimizations
279   --disable-sse4           disable SSE4 optimizations
280   --disable-sse42          disable SSE4.2 optimizations
281   --disable-avx            disable AVX optimizations
282   --disable-xop            disable XOP optimizations
283   --disable-fma3           disable FMA3 optimizations
284   --disable-fma4           disable FMA4 optimizations
285   --disable-avx2           disable AVX2 optimizations
286   --disable-armv5te        disable armv5te optimizations
287   --disable-armv6          disable armv6 optimizations
288   --disable-armv6t2        disable armv6t2 optimizations
289   --disable-vfp            disable VFP optimizations
290   --disable-neon           disable NEON optimizations
291   --disable-inline-asm     disable use of inline assembly
292   --disable-yasm           disable use of nasm/yasm assembly
293
294 Developer options (useful when working on Libav itself):
295   --disable-debug          disable debugging symbols
296   --enable-debug=LEVEL     set the debug level [$debuglevel]
297   --disable-optimizations  disable compiler optimizations
298   --enable-extra-warnings  enable more compiler warnings
299   --samples=PATH           location of test samples for FATE, if not set use
300                            \$LIBAV_SAMPLES at make invocation time.
301   --enable-neon-clobber-test check NEON registers for clobbering (should be
302                            used only for debugging purposes)
303   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
304                            should be used only for debugging purposes)
305   --enable-random          randomly enable/disable components
306   --disable-random
307   --enable-random=LIST     randomly enable/disable specific components or
308   --disable-random=LIST    component groups. LIST is a comma-separated list
309                            of NAME[:PROB] entries where NAME is a component
310                            (group) and PROB the probability associated with
311                            NAME (default 0.5).
312   --random-seed=VALUE      seed value for --enable/disable-random
313
314 NOTE: Object files are built at the place where configure is launched.
315 EOF
316   exit 0
317 }
318
319 quotes='""'
320
321 log(){
322     echo "$@" >> $logfile
323 }
324
325 log_file(){
326     log BEGIN $1
327     pr -n -t $1 >> $logfile
328     log END $1
329 }
330
331 echolog(){
332     log "$@"
333     echo "$@"
334 }
335
336 warn(){
337     log "WARNING: $*"
338     WARNINGS="${WARNINGS}WARNING: $*\n"
339 }
340
341 die(){
342     echolog "$@"
343     cat <<EOF
344
345 If you think configure made a mistake, make sure you are using the latest
346 version from Git.  If the latest version fails, report the problem to the
347 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
348 EOF
349     if disabled logging; then
350         cat <<EOF
351 Rerun configure with logging enabled (do not use --disable-logging), and
352 include the log this produces with your report.
353 EOF
354     else
355         cat <<EOF
356 Include the log file "$logfile" produced by configure as this will help
357 solving the problem.
358 EOF
359     fi
360     exit 1
361 }
362
363 # Avoid locale weirdness, besides we really just want to translate ASCII.
364 toupper(){
365     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
366 }
367
368 tolower(){
369     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
370 }
371
372 c_escape(){
373     echo "$*" | sed 's/["\\]/\\\0/g'
374 }
375
376 sh_quote(){
377     v=$(echo "$1" | sed "s/'/'\\\\''/g")
378     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
379     echo "$v"
380 }
381
382 cleanws(){
383     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
384 }
385
386 filter(){
387     pat=$1
388     shift
389     for v; do
390         eval "case $v in $pat) echo $v ;; esac"
391     done
392 }
393
394 filter_out(){
395     pat=$1
396     shift
397     for v; do
398         eval "case $v in $pat) ;; *) echo $v ;; esac"
399     done
400 }
401
402 map(){
403     m=$1
404     shift
405     for v; do eval $m; done
406 }
407
408 add_suffix(){
409     suffix=$1
410     shift
411     for v; do echo ${v}${suffix}; done
412 }
413
414 set_all(){
415     value=$1
416     shift
417     for var in $*; do
418         eval $var=$value
419     done
420 }
421
422 set_weak(){
423     value=$1
424     shift
425     for var; do
426         eval : \${$var:=$value}
427     done
428 }
429
430 sanitize_var_name(){
431     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
432 }
433
434 set_safe(){
435     var=$1
436     shift
437     eval $(sanitize_var_name "$var")='$*'
438 }
439
440 get_safe(){
441     eval echo \$$(sanitize_var_name "$1")
442 }
443
444 pushvar(){
445     for pvar in $*; do
446         eval level=\${${pvar}_level:=0}
447         eval ${pvar}_${level}="\$$pvar"
448         eval ${pvar}_level=$(($level+1))
449     done
450 }
451
452 popvar(){
453     for pvar in $*; do
454         eval level=\${${pvar}_level:-0}
455         test $level = 0 && continue
456         eval level=$(($level-1))
457         eval $pvar="\${${pvar}_${level}}"
458         eval ${pvar}_level=$level
459         eval unset ${pvar}_${level}
460     done
461 }
462
463 enable(){
464     set_all yes $*
465 }
466
467 disable(){
468     set_all no $*
469 }
470
471 enable_weak(){
472     set_weak yes $*
473 }
474
475 disable_weak(){
476     set_weak no $*
477 }
478
479 enable_safe(){
480     for var; do
481         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
482     done
483 }
484
485 disable_safe(){
486     for var; do
487         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
488     done
489 }
490
491 do_enable_deep(){
492     for var; do
493         enabled $var && continue
494         eval sel="\$${var}_select"
495         eval sgs="\$${var}_suggest"
496         pushvar var sgs
497         enable_deep $sel
498         popvar sgs
499         enable_deep_weak $sgs
500         popvar var
501     done
502 }
503
504 enable_deep(){
505     do_enable_deep $*
506     enable $*
507 }
508
509 enable_deep_weak(){
510     for var; do
511         disabled $var && continue
512         pushvar var
513         do_enable_deep $var
514         popvar var
515         enable_weak $var
516     done
517 }
518
519 enabled(){
520     test "${1#!}" = "$1" && op== || op=!=
521     eval test "x\$${1#!}" $op "xyes"
522 }
523
524 disabled(){
525     test "${1#!}" = "$1" && op== || op=!=
526     eval test "x\$${1#!}" $op "xno"
527 }
528
529 enabled_all(){
530     for opt; do
531         enabled $opt || return 1
532     done
533 }
534
535 disabled_all(){
536     for opt; do
537         disabled $opt || return 1
538     done
539 }
540
541 enabled_any(){
542     for opt; do
543         enabled $opt && return 0
544     done
545 }
546
547 disabled_any(){
548     for opt; do
549         disabled $opt && return 0
550     done
551     return 1
552 }
553
554 set_default(){
555     for opt; do
556         eval : \${$opt:=\$${opt}_default}
557     done
558 }
559
560 is_in(){
561     value=$1
562     shift
563     for var in $*; do
564         [ $var = $value ] && return 0
565     done
566     return 1
567 }
568
569 do_check_deps(){
570     for cfg; do
571         cfg="${cfg#!}"
572         enabled ${cfg}_checking && die "Circular dependency for $cfg."
573         disabled ${cfg}_checking && continue
574         enable ${cfg}_checking
575         append allopts $cfg
576
577         eval dep_all="\$${cfg}_deps"
578         eval dep_any="\$${cfg}_deps_any"
579         eval dep_sel="\$${cfg}_select"
580         eval dep_sgs="\$${cfg}_suggest"
581         eval dep_ifa="\$${cfg}_if"
582         eval dep_ifn="\$${cfg}_if_any"
583
584         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
585         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
586         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
587
588         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
589         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
590         enabled_all  $dep_all || disable $cfg
591         enabled_any  $dep_any || disable $cfg
592         disabled_any $dep_sel && disable $cfg
593
594         if enabled $cfg; then
595             enable_deep $dep_sel
596             enable_deep_weak $dep_sgs
597         fi
598
599         disable ${cfg}_checking
600     done
601 }
602
603 check_deps(){
604     unset allopts
605
606     do_check_deps "$@"
607
608     for cfg in $allopts; do
609         enabled $cfg || continue
610         eval dep_extralibs="\$${cfg}_extralibs"
611         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
612     done
613 }
614
615 print_config(){
616     pfx=$1
617     files=$2
618     shift 2
619     map 'eval echo "$v \${$v:-no}"' "$@" |
620     awk "BEGIN { split(\"$files\", files) }
621         {
622             c = \"$pfx\" toupper(\$1);
623             v = \$2;
624             sub(/yes/, 1, v);
625             sub(/no/,  0, v);
626             for (f in files) {
627                 file = files[f];
628                 if (file ~ /\\.h\$/) {
629                     printf(\"#define %s %d\\n\", c, v) >>file;
630                 } else if (file ~ /\\.asm\$/) {
631                     printf(\"%%define %s %d\\n\", c, v) >>file;
632                 } else if (file ~ /\\.mak\$/) {
633                     n = -v ? \"\" : \"!\";
634                     printf(\"%s%s=yes\\n\", n, c) >>file;
635                 }
636             }
637         }"
638 }
639
640 print_enabled(){
641     suf=$1
642     shift
643     for v; do
644         enabled $v && printf "%s\n" ${v%$suf};
645     done
646 }
647
648 append(){
649     var=$1
650     shift
651     eval "$var=\"\$$var $*\""
652 }
653
654 prepend(){
655     var=$1
656     shift
657     eval "$var=\"$* \$$var\""
658 }
659
660 unique(){
661     var=$1
662     uniq_list=""
663     for tok in $(eval echo \$$var); do
664         uniq_list="$(filter_out $tok $uniq_list) $tok"
665     done
666     eval "$var=\"${uniq_list}\""
667 }
668
669 add_cppflags(){
670     append CPPFLAGS "$@"
671 }
672
673 add_cflags(){
674     append CFLAGS $($cflags_filter "$@")
675 }
676
677 add_asflags(){
678     append ASFLAGS $($asflags_filter "$@")
679 }
680
681 add_ldflags(){
682     append LDFLAGS $($ldflags_filter "$@")
683 }
684
685 add_ldexeflags(){
686     append LDEXEFLAGS $($ldflags_filter "$@")
687 }
688
689 add_stripflags(){
690     append STRIPFLAGS "$@"
691 }
692
693 add_extralibs(){
694     prepend extralibs $($ldflags_filter "$@")
695 }
696
697 add_host_cppflags(){
698     append host_cppflags "$@"
699 }
700
701 add_host_cflags(){
702     append host_cflags $($host_cflags_filter "$@")
703 }
704
705 add_host_ldflags(){
706     append host_ldflags $($host_ldflags_filter "$@")
707 }
708
709 add_compat(){
710     append compat_objs $1
711     shift
712     map 'add_cppflags -D$v' "$@"
713 }
714
715 check_cmd(){
716     log "$@"
717     "$@" >> $logfile 2>&1
718 }
719
720 cc_o(){
721     eval printf '%s\\n' $CC_O
722 }
723
724 cc_e(){
725     eval printf '%s\\n' $CC_E
726 }
727
728 check_cc(){
729     log check_cc "$@"
730     cat > $TMPC
731     log_file $TMPC
732     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
733 }
734
735 check_cpp(){
736     log check_cpp "$@"
737     cat > $TMPC
738     log_file $TMPC
739     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
740 }
741
742 as_o(){
743     eval printf '%s\\n' $AS_O
744 }
745
746 check_as(){
747     log check_as "$@"
748     cat > $TMPS
749     log_file $TMPS
750     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
751 }
752
753 check_inline_asm(){
754     log check_inline_asm "$@"
755     name="$1"
756     code="$2"
757     shift 2
758     disable $name
759     check_cc "$@" <<EOF && enable $name
760 void foo(void){ __asm__ volatile($code); }
761 EOF
762 }
763
764 check_insn(){
765     log check_insn "$@"
766     check_inline_asm ${1}_inline "\"$2\""
767     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
768 }
769
770 check_yasm(){
771     log check_yasm "$@"
772     echo "$1" > $TMPS
773     log_file $TMPS
774     shift 1
775     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
776 }
777
778 ld_o(){
779     eval printf '%s\\n' $LD_O
780 }
781
782 check_ld(){
783     log check_ld "$@"
784     flags=$(filter_out '-l*' "$@")
785     libs=$(filter '-l*' "$@")
786     check_cc $($cflags_filter $flags) || return
787     flags=$($ldflags_filter $flags)
788     libs=$($ldflags_filter $libs)
789     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
790 }
791
792 print_include(){
793     hdr=$1
794     test "${hdr%.h}" = "${hdr}" &&
795         echo "#include $hdr"    ||
796         echo "#include <$hdr>"
797 }
798
799 check_code(){
800     log check_code "$@"
801     check=$1
802     headers=$2
803     code=$3
804     shift 3
805     {
806         for hdr in $headers; do
807             print_include $hdr
808         done
809         echo "int main(void) { $code; return 0; }"
810     } | check_$check "$@"
811 }
812
813 check_cppflags(){
814     log check_cppflags "$@"
815     check_cc "$@" <<EOF && append CPPFLAGS "$@"
816 int x;
817 EOF
818 }
819
820 test_cflags(){
821     log test_cflags "$@"
822     set -- $($cflags_filter "$@")
823     check_cc "$@" <<EOF
824 int x;
825 EOF
826 }
827
828 check_cflags(){
829     log check_cflags "$@"
830     test_cflags "$@" && add_cflags "$@"
831 }
832
833 test_ldflags(){
834     log test_ldflags "$@"
835     check_ld "$@" <<EOF
836 int main(void){ return 0; }
837 EOF
838 }
839
840 check_ldflags(){
841     log check_ldflags "$@"
842     test_ldflags "$@" && add_ldflags "$@"
843 }
844
845 test_stripflags(){
846     log test_stripflags "$@"
847     # call check_cc to get a fresh TMPO
848     check_cc <<EOF
849 int main(void) { return 0; }
850 EOF
851     check_cmd $strip $STRIPFLAGS "$@" $TMPO
852 }
853
854 check_stripflags(){
855     log check_stripflags "$@"
856     test_stripflags "$@" && add_stripflags "$@"
857 }
858
859 check_header(){
860     log check_header "$@"
861     header=$1
862     shift
863     disable_safe $header
864     check_cpp "$@" <<EOF && enable_safe $header
865 #include <$header>
866 int x;
867 EOF
868 }
869
870 check_func(){
871     log check_func "$@"
872     func=$1
873     shift
874     disable $func
875     check_ld "$@" <<EOF && enable $func
876 extern int $func();
877 int main(void){ $func(); }
878 EOF
879 }
880
881 check_mathfunc(){
882     log check_mathfunc "$@"
883     func=$1
884     narg=$2
885     shift 2
886     test $narg = 2 && args="f, g" || args="f"
887     disable $func
888     check_ld "$@" <<EOF && enable $func
889 #include <math.h>
890 float foo(float f, float g) { return $func($args); }
891 int main(void){ return 0; }
892 EOF
893 }
894
895 check_func_headers(){
896     log check_func_headers "$@"
897     headers=$1
898     funcs=$2
899     shift 2
900     {
901         for hdr in $headers; do
902             print_include $hdr
903         done
904         for func in $funcs; do
905             echo "long check_$func(void) { return (long) $func; }"
906         done
907         echo "int main(void) { return 0; }"
908     } | check_ld "$@" && enable $funcs && enable_safe $headers
909 }
910
911 check_cpp_condition(){
912     log check_cpp_condition "$@"
913     header=$1
914     condition=$2
915     shift 2
916     check_cpp "$@" <<EOF
917 #include <$header>
918 #if !($condition)
919 #error "unsatisfied condition: $condition"
920 #endif
921 EOF
922 }
923
924 check_lib(){
925     log check_lib "$@"
926     header="$1"
927     func="$2"
928     shift 2
929     check_header $header && check_func $func "$@" && add_extralibs "$@"
930 }
931
932 check_lib2(){
933     log check_lib2 "$@"
934     headers="$1"
935     funcs="$2"
936     shift 2
937     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
938 }
939
940 check_pkg_config(){
941     log check_pkg_config "$@"
942     pkg="$1"
943     headers="$2"
944     funcs="$3"
945     shift 3
946     check_cmd $pkg_config --exists --print-errors $pkg || return
947     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
948     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
949     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
950         set_safe ${pkg}_cflags $pkg_cflags   &&
951         set_safe ${pkg}_libs   $pkg_libs
952 }
953
954 check_exec(){
955     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
956 }
957
958 check_exec_crash(){
959     code=$(cat)
960
961     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
962     # are safe but may not be available everywhere.  Thus we use
963     # raise(SIGTERM) instead.  The check is run in a subshell so we
964     # can redirect the "Terminated" message from the shell.  SIGBUS
965     # is not defined by standard C so it is used conditionally.
966
967     (check_exec "$@") >> $logfile 2>&1 <<EOF
968 #include <signal.h>
969 static void sighandler(int sig){
970     raise(SIGTERM);
971 }
972 int foo(void){
973     $code
974 }
975 int (*func_ptr)(void) = foo;
976 int main(void){
977     signal(SIGILL, sighandler);
978     signal(SIGFPE, sighandler);
979     signal(SIGSEGV, sighandler);
980 #ifdef SIGBUS
981     signal(SIGBUS, sighandler);
982 #endif
983     return func_ptr();
984 }
985 EOF
986 }
987
988 check_type(){
989     log check_type "$@"
990     headers=$1
991     type=$2
992     shift 2
993     disable_safe "$type"
994     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
995 }
996
997 check_struct(){
998     log check_struct "$@"
999     headers=$1
1000     struct=$2
1001     member=$3
1002     shift 3
1003     disable_safe "${struct}_${member}"
1004     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1005         enable_safe "${struct}_${member}"
1006 }
1007
1008 check_builtin(){
1009     log check_builtin "$@"
1010     name=$1
1011     headers=$2
1012     builtin=$3
1013     shift 3
1014     disable "$name"
1015     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1016 }
1017
1018 check_compile_assert(){
1019     log check_compile_assert "$@"
1020     name=$1
1021     headers=$2
1022     condition=$3
1023     shift 3
1024     disable "$name"
1025     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1026 }
1027
1028 require(){
1029     name="$1"
1030     header="$2"
1031     func="$3"
1032     shift 3
1033     check_lib $header $func "$@" || die "ERROR: $name not found"
1034 }
1035
1036 require2(){
1037     name="$1"
1038     headers="$2"
1039     func="$3"
1040     shift 3
1041     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1042 }
1043
1044 require_pkg_config(){
1045     pkg="$1"
1046     check_pkg_config "$@" || die "ERROR: $pkg not found"
1047     add_cflags    $(get_safe ${pkg}_cflags)
1048     add_extralibs $(get_safe ${pkg}_libs)
1049 }
1050
1051 hostcc_e(){
1052     eval printf '%s\\n' $HOSTCC_E
1053 }
1054
1055 hostcc_o(){
1056     eval printf '%s\\n' $HOSTCC_O
1057 }
1058
1059 check_host_cc(){
1060     log check_host_cc "$@"
1061     cat > $TMPC
1062     log_file $TMPC
1063     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1064 }
1065
1066 check_host_cpp(){
1067     log check_host_cpp "$@"
1068     cat > $TMPC
1069     log_file $TMPC
1070     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1071 }
1072
1073 check_host_cppflags(){
1074     log check_host_cppflags "$@"
1075     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1076 int x;
1077 EOF
1078 }
1079
1080 check_host_cflags(){
1081     log check_host_cflags "$@"
1082     set -- $($host_cflags_filter "$@")
1083     check_host_cc "$@" <<EOF && append host_cflags "$@"
1084 int x;
1085 EOF
1086 }
1087
1088 check_host_cpp_condition(){
1089     log check_host_cpp_condition "$@"
1090     header=$1
1091     condition=$2
1092     shift 2
1093     check_host_cpp "$@" <<EOF
1094 #include <$header>
1095 #if !($condition)
1096 #error "unsatisfied condition: $condition"
1097 #endif
1098 EOF
1099 }
1100
1101 apply(){
1102     file=$1
1103     shift
1104     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1105 }
1106
1107 cp_if_changed(){
1108     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1109     mkdir -p "$(dirname $2)"
1110     $cp_f "$1" "$2"
1111 }
1112
1113 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1114 # system-dependent things.
1115
1116 COMPONENT_LIST="
1117     bsfs
1118     decoders
1119     demuxers
1120     encoders
1121     filters
1122     hwaccels
1123     indevs
1124     muxers
1125     outdevs
1126     parsers
1127     protocols
1128 "
1129
1130 EXAMPLE_LIST="
1131     avcodec_example
1132     filter_audio_example
1133     metadata_example
1134     output_example
1135     transcode_aac_example
1136 "
1137
1138 EXTERNAL_LIBRARY_LIST="
1139     avisynth
1140     bzlib
1141     frei0r
1142     gnutls
1143     libbs2b
1144     libcdio
1145     libdc1394
1146     libfaac
1147     libfdk_aac
1148     libfontconfig
1149     libfreetype
1150     libgsm
1151     libilbc
1152     libmp3lame
1153     libopencore_amrnb
1154     libopencore_amrwb
1155     libopencv
1156     libopenjpeg
1157     libopus
1158     libpulse
1159     librtmp
1160     libschroedinger
1161     libspeex
1162     libtheora
1163     libtwolame
1164     libvo_aacenc
1165     libvo_amrwbenc
1166     libvorbis
1167     libvpx
1168     libwavpack
1169     libwebp
1170     libx264
1171     libx265
1172     libxavs
1173     libxvid
1174     openssl
1175     x11grab
1176     zlib
1177 "
1178
1179 FEATURE_LIST="
1180     gray
1181     hardcoded_tables
1182     runtime_cpudetect
1183     safe_bitstream_reader
1184     shared
1185     small
1186     sram
1187     static
1188     swscale_alpha
1189 "
1190
1191 HWACCEL_LIST="
1192     dxva2
1193     vaapi
1194     vda
1195     vdpau
1196 "
1197
1198 LIBRARY_LIST="
1199     avcodec
1200     avdevice
1201     avfilter
1202     avformat
1203     avresample
1204     avutil
1205     swscale
1206 "
1207
1208 LICENSE_LIST="
1209     gpl
1210     nonfree
1211     version3
1212 "
1213
1214 PROGRAM_LIST="
1215     avconv
1216     avplay
1217     avprobe
1218 "
1219
1220 SUBSYSTEM_LIST="
1221     dct
1222     doc
1223     error_resilience
1224     faan
1225     fft
1226     lsp
1227     lzo
1228     mdct
1229     network
1230     rdft
1231 "
1232
1233 CONFIG_LIST="
1234     $COMPONENT_LIST
1235     $EXAMPLE_LIST
1236     $EXTERNAL_LIBRARY_LIST
1237     $FEATURE_LIST
1238     $HWACCEL_LIST
1239     $LICENSE_LIST
1240     $LIBRARY_LIST
1241     $PROGRAM_LIST
1242     $SUBSYSTEM_LIST
1243     memalign_hack
1244     neon_clobber_test
1245     pic
1246     pod2man
1247     texi2html
1248     thumb
1249     xmm_clobber_test
1250 "
1251
1252 THREADS_LIST="
1253     pthreads
1254     w32threads
1255 "
1256
1257 ATOMICS_LIST="
1258     atomics_gcc
1259     atomics_suncc
1260     atomics_win32
1261 "
1262
1263 ARCH_LIST="
1264     aarch64
1265     alpha
1266     arm
1267     avr32
1268     avr32_ap
1269     avr32_uc
1270     bfin
1271     ia64
1272     m68k
1273     mips
1274     mips64
1275     parisc
1276     ppc
1277     ppc64
1278     s390
1279     sh4
1280     sparc
1281     sparc64
1282     tilegx
1283     tilepro
1284     tomi
1285     x86
1286     x86_32
1287     x86_64
1288 "
1289
1290 ARCH_EXT_LIST_ARM="
1291     armv5te
1292     armv6
1293     armv6t2
1294     armv8
1295     neon
1296     vfp
1297     vfpv3
1298 "
1299
1300 ARCH_EXT_LIST_X86_SIMD="
1301     amd3dnow
1302     amd3dnowext
1303     avx
1304     avx2
1305     fma3
1306     fma4
1307     mmx
1308     mmxext
1309     sse
1310     sse2
1311     sse3
1312     sse4
1313     sse42
1314     ssse3
1315     xop
1316 "
1317
1318 ARCH_EXT_LIST_PPC="
1319     altivec
1320     dcbzl
1321     ldbrx
1322     ppc4xx
1323 "
1324
1325 ARCH_EXT_LIST_X86="
1326     $ARCH_EXT_LIST_X86_SIMD
1327     cpunop
1328     i686
1329 "
1330
1331 ARCH_EXT_LIST="
1332     $ARCH_EXT_LIST_ARM
1333     $ARCH_EXT_LIST_PPC
1334     $ARCH_EXT_LIST_X86
1335     loongson
1336     vis
1337 "
1338
1339 ARCH_FEATURES="
1340     aligned_stack
1341     fast_64bit
1342     fast_clz
1343     fast_cmov
1344     local_aligned_8
1345     local_aligned_16
1346     simd_align_16
1347 "
1348
1349 BUILTIN_LIST="
1350     atomic_cas_ptr
1351     machine_rw_barrier
1352     MemoryBarrier
1353     mm_empty
1354     rdtsc
1355     sync_val_compare_and_swap
1356 "
1357 HAVE_LIST_CMDLINE="
1358     inline_asm
1359     symver
1360     yasm
1361 "
1362
1363 HAVE_LIST_PUB="
1364     bigendian
1365     fast_unaligned
1366 "
1367
1368 HEADERS_LIST="
1369     alsa_asoundlib_h
1370     altivec_h
1371     arpa_inet_h
1372     cdio_paranoia_h
1373     cdio_paranoia_paranoia_h
1374     dev_bktr_ioctl_bt848_h
1375     dev_bktr_ioctl_meteor_h
1376     dev_ic_bt8xx_h
1377     dev_video_bktr_ioctl_bt848_h
1378     dev_video_meteor_ioctl_meteor_h
1379     direct_h
1380     dlfcn_h
1381     dxva_h
1382     gsm_h
1383     io_h
1384     mach_mach_time_h
1385     machine_ioctl_bt848_h
1386     machine_ioctl_meteor_h
1387     malloc_h
1388     poll_h
1389     sndio_h
1390     soundcard_h
1391     sys_mman_h
1392     sys_param_h
1393     sys_resource_h
1394     sys_select_h
1395     sys_soundcard_h
1396     sys_time_h
1397     sys_un_h
1398     sys_videoio_h
1399     unistd_h
1400     windows_h
1401     winsock2_h
1402 "
1403
1404 INTRINSICS_LIST="
1405     intrinsics_neon
1406 "
1407
1408 MATH_FUNCS="
1409     atanf
1410     atan2f
1411     cbrtf
1412     cosf
1413     exp2
1414     exp2f
1415     expf
1416     isinf
1417     isnan
1418     ldexpf
1419     llrint
1420     llrintf
1421     log2
1422     log2f
1423     log10f
1424     lrint
1425     lrintf
1426     powf
1427     rint
1428     round
1429     roundf
1430     sinf
1431     trunc
1432     truncf
1433 "
1434
1435 SYSTEM_FUNCS="
1436     aligned_malloc
1437     clock_gettime
1438     closesocket
1439     CommandLineToArgvW
1440     CoTaskMemFree
1441     CryptGenRandom
1442     dlopen
1443     fcntl
1444     flt_lim
1445     fork
1446     getaddrinfo
1447     gethrtime
1448     getopt
1449     GetProcessAffinityMask
1450     GetProcessMemoryInfo
1451     GetProcessTimes
1452     getrusage
1453     getservbyport
1454     GetSystemTimeAsFileTime
1455     gettimeofday
1456     inet_aton
1457     isatty
1458     jack_port_get_latency_range
1459     localtime_r
1460     mach_absolute_time
1461     MapViewOfFile
1462     memalign
1463     mkstemp
1464     mmap
1465     mprotect
1466     nanosleep
1467     posix_memalign
1468     sched_getaffinity
1469     SetConsoleTextAttribute
1470     setmode
1471     setrlimit
1472     Sleep
1473     strerror_r
1474     strptime
1475     sysconf
1476     sysctl
1477     usleep
1478     VirtualAlloc
1479 "
1480
1481 TOOLCHAIN_FEATURES="
1482     as_dn_directive
1483     as_func
1484     asm_mod_q
1485     attribute_may_alias
1486     attribute_packed
1487     ebp_available
1488     ebx_available
1489     gnu_as
1490     ibm_asm
1491     inline_asm_labels
1492     pragma_deprecated
1493     symver_asm_label
1494     symver_gnu_asm
1495     vfp_args
1496     xform_asm
1497     xmm_clobbers
1498 "
1499
1500 TYPES_LIST="
1501     CONDITION_VARIABLE_Ptr
1502     socklen_t
1503     struct_addrinfo
1504     struct_group_source_req
1505     struct_ip_mreq_source
1506     struct_ipv6_mreq
1507     struct_pollfd
1508     struct_rusage_ru_maxrss
1509     struct_sockaddr_in6
1510     struct_sockaddr_sa_len
1511     struct_sockaddr_storage
1512     struct_v4l2_frmivalenum_discrete
1513 "
1514
1515 HAVE_LIST="
1516     $ARCH_EXT_LIST
1517     $(add_suffix _external $ARCH_EXT_LIST)
1518     $(add_suffix _inline   $ARCH_EXT_LIST)
1519     $ARCH_FEATURES
1520     $ATOMICS_LIST
1521     $BUILTIN_LIST
1522     $HAVE_LIST_CMDLINE
1523     $HAVE_LIST_PUB
1524     $HEADERS_LIST
1525     $INTRINSICS_LIST
1526     $MATH_FUNCS
1527     $SYSTEM_FUNCS
1528     $THREADS_LIST
1529     $TOOLCHAIN_FEATURES
1530     $TYPES_LIST
1531     atomics_native
1532     dos_paths
1533     dxva2_lib
1534     libc_msvcrt
1535     libdc1394_1
1536     libdc1394_2
1537     sdl
1538     threads
1539     vdpau_x11
1540     xlib
1541 "
1542
1543 # options emitted with CONFIG_ prefix but not available on the command line
1544 CONFIG_EXTRA="
1545     aandcttables
1546     ac3dsp
1547     audio_frame_queue
1548     audiodsp
1549     blockdsp
1550     bswapdsp
1551     cabac
1552     dvprofile
1553     faandct
1554     faanidct
1555     fdctdsp
1556     gcrypt
1557     golomb
1558     gplv3
1559     h263dsp
1560     h264chroma
1561     h264dsp
1562     h264pred
1563     h264qpel
1564     hpeldsp
1565     huffman
1566     huffyuvdsp
1567     huffyuvencdsp
1568     idctdsp
1569     iirfilter
1570     intrax8
1571     lgplv3
1572     lpc
1573     me_cmp
1574     mpeg_er
1575     mpegaudio
1576     mpegaudiodsp
1577     mpegvideo
1578     mpegvideoenc
1579     nettle
1580     pixblockdsp
1581     qpeldsp
1582     rangecoder
1583     riffdec
1584     riffenc
1585     rtpdec
1586     rtpenc_chain
1587     sinewin
1588     startcode
1589     tpeldsp
1590     videodsp
1591     vp3dsp
1592     wma_freqs
1593 "
1594
1595 CMDLINE_SELECT="
1596     $ARCH_EXT_LIST
1597     $CONFIG_LIST
1598     $HAVE_LIST_CMDLINE
1599     $THREADS_LIST
1600     asm
1601     cross_compile
1602     debug
1603     extra_warnings
1604     logging
1605     lto
1606     optimizations
1607     rpath
1608 "
1609
1610 PATHS_LIST="
1611     bindir
1612     datadir
1613     docdir
1614     incdir
1615     libdir
1616     mandir
1617     prefix
1618     shlibdir
1619 "
1620
1621 CMDLINE_SET="
1622     $PATHS_LIST
1623     ar
1624     arch
1625     as
1626     build_suffix
1627     cc
1628     cpu
1629     cross_prefix
1630     dep_cc
1631     extra_version
1632     host_cc
1633     host_cflags
1634     host_ld
1635     host_ldflags
1636     host_libs
1637     host_os
1638     ld
1639     logfile
1640     malloc_prefix
1641     nm
1642     optflags
1643     pkg_config
1644     pkg_config_flags
1645     random_seed
1646     samples
1647     sysinclude
1648     sysroot
1649     target_exec
1650     target_os
1651     target_path
1652     target_samples
1653     toolchain
1654 "
1655
1656 CMDLINE_APPEND="
1657     extra_cflags
1658     host_cppflags
1659 "
1660
1661 # code dependency declarations
1662
1663 # architecture extensions
1664
1665 armv5te_deps="arm"
1666 armv6_deps="arm"
1667 armv6t2_deps="arm"
1668 armv8_deps="aarch64"
1669 neon_deps_any="aarch64 arm"
1670 intrinsics_neon_deps="neon"
1671 vfp_deps_any="aarch64 arm"
1672 vfpv3_deps="vfp"
1673
1674 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1675
1676 altivec_deps="ppc"
1677 ppc4xx_deps="ppc"
1678
1679 cpunop_deps="i686"
1680 x86_64_select="i686"
1681 x86_64_suggest="fast_cmov"
1682
1683 amd3dnow_deps="mmx"
1684 amd3dnowext_deps="amd3dnow"
1685 i686_deps="x86"
1686 mmx_deps="x86"
1687 mmxext_deps="mmx"
1688 sse_deps="mmxext"
1689 sse2_deps="sse"
1690 sse3_deps="sse2"
1691 ssse3_deps="sse3"
1692 sse4_deps="ssse3"
1693 sse42_deps="sse4"
1694 avx_deps="sse42"
1695 xop_deps="avx"
1696 fma3_deps="avx"
1697 fma4_deps="avx"
1698 avx2_deps="avx"
1699
1700 mmx_external_deps="yasm"
1701 mmx_inline_deps="inline_asm"
1702 mmx_suggest="mmx_external mmx_inline"
1703
1704 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1705     eval dep=\$${ext}_deps
1706     eval ${ext}_external_deps='"${dep}_external"'
1707     eval ${ext}_inline_deps='"${dep}_inline"'
1708     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1709 done
1710
1711 aligned_stack_if_any="aarch64 ppc x86"
1712 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1713 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1714 fast_unaligned_if_any="aarch64 ppc x86"
1715 simd_align_16_if_any="altivec neon sse"
1716
1717 # system capabilities
1718 log2_deps="!libc_msvcrt"
1719
1720 symver_if_any="symver_asm_label symver_gnu_asm"
1721
1722 # threading support
1723 atomics_gcc_if="sync_val_compare_and_swap"
1724 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1725 atomics_win32_if="MemoryBarrier"
1726 atomics_native_if_any="$ATOMICS_LIST"
1727 w32threads_deps="atomics_native"
1728 threads_if_any="$THREADS_LIST"
1729
1730 # subsystems
1731 dct_select="rdft"
1732 error_resilience_select="me_cmp"
1733 faandct_deps="faan fdctdsp"
1734 faanidct_deps="faan idctdsp"
1735 intrax8_select="error_resilience"
1736 mdct_select="fft"
1737 rdft_select="fft"
1738 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1739 mpeg_er_select="error_resilience"
1740 mpegaudio_select="mpegaudiodsp"
1741 mpegaudiodsp_select="dct"
1742 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp videodsp"
1743 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1744
1745 # decoders / encoders
1746 aac_decoder_select="mdct sinewin"
1747 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1748 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1749 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
1750 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1751 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1752 aic_decoder_select="golomb idctdsp"
1753 alac_encoder_select="lpc"
1754 als_decoder_select="bswapdsp"
1755 amrnb_decoder_select="lsp"
1756 amrwb_decoder_select="lsp"
1757 amv_decoder_select="sp5x_decoder"
1758 ape_decoder_select="bswapdsp"
1759 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1760 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1761 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1762 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1763 atrac1_decoder_select="mdct sinewin"
1764 atrac3_decoder_select="mdct"
1765 atrac3p_decoder_select="mdct sinewin"
1766 bink_decoder_select="blockdsp hpeldsp"
1767 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1768 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1769 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1770 cllc_decoder_select="bswapdsp"
1771 comfortnoise_encoder_select="lpc"
1772 cook_decoder_select="audiodsp mdct sinewin"
1773 cscd_decoder_select="lzo"
1774 cscd_decoder_suggest="zlib"
1775 dca_decoder_select="mdct"
1776 dnxhd_decoder_select="blockdsp idctdsp"
1777 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1778 dvvideo_decoder_select="dvprofile idctdsp"
1779 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1780 dxa_decoder_deps="zlib"
1781 eac3_decoder_select="ac3_decoder"
1782 eac3_encoder_select="ac3_encoder"
1783 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1784 eatgq_decoder_select="aandcttables idctdsp"
1785 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
1786 exr_decoder_deps="zlib"
1787 ffv1_decoder_select="golomb rangecoder"
1788 ffv1_encoder_select="rangecoder"
1789 ffvhuff_decoder_select="huffyuv_decoder"
1790 ffvhuff_encoder_select="huffyuv_encoder"
1791 fic_decoder_select="golomb"
1792 flac_decoder_select="golomb"
1793 flac_encoder_select="bswapdsp golomb lpc"
1794 flashsv_decoder_deps="zlib"
1795 flashsv_encoder_deps="zlib"
1796 flashsv2_decoder_deps="zlib"
1797 flv_decoder_select="h263_decoder"
1798 flv_encoder_select="h263_encoder"
1799 fourxm_decoder_select="blockdsp bswapdsp"
1800 fraps_decoder_select="bswapdsp huffman"
1801 g2m_decoder_deps="zlib"
1802 g2m_decoder_select="blockdsp idctdsp"
1803 h261_decoder_select="mpeg_er mpegvideo"
1804 h261_encoder_select="aandcttables mpegvideoenc"
1805 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1806 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1807 h263i_decoder_select="h263_decoder"
1808 h263p_encoder_select="h263_encoder"
1809 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
1810 h264_decoder_suggest="error_resilience"
1811 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1812 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1813 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1814 iac_decoder_select="imc_decoder"
1815 imc_decoder_select="bswapdsp fft mdct sinewin"
1816 indeo3_decoder_select="hpeldsp"
1817 interplay_video_decoder_select="hpeldsp"
1818 jpegls_decoder_select="golomb mjpeg_decoder"
1819 jpegls_encoder_select="golomb"
1820 jv_decoder_select="blockdsp"
1821 lagarith_decoder_select="huffyuvdsp"
1822 ljpeg_encoder_select="aandcttables idctdsp"
1823 loco_decoder_select="golomb"
1824 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1825 metasound_decoder_select="lsp mdct sinewin"
1826 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1827 mjpeg_decoder_select="blockdsp hpeldsp idctdsp"
1828 mjpeg_encoder_select="aandcttables mpegvideoenc"
1829 mjpegb_decoder_select="mjpeg_decoder"
1830 mlp_decoder_select="mlp_parser"
1831 motionpixels_decoder_select="bswapdsp"
1832 mp1_decoder_select="mpegaudio"
1833 mp1float_decoder_select="mpegaudio"
1834 mp2_decoder_select="mpegaudio"
1835 mp2float_decoder_select="mpegaudio"
1836 mp3_decoder_select="mpegaudio"
1837 mp3adu_decoder_select="mpegaudio"
1838 mp3adufloat_decoder_select="mpegaudio"
1839 mp3float_decoder_select="mpegaudio"
1840 mp3on4_decoder_select="mpegaudio"
1841 mp3on4float_decoder_select="mpegaudio"
1842 mpc7_decoder_select="bswapdsp mpegaudiodsp"
1843 mpc8_decoder_select="mpegaudiodsp"
1844 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1845 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1846 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
1847 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1848 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
1849 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1850 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1851 mpeg4_encoder_select="h263_encoder"
1852 msmpeg4v1_decoder_select="h263_decoder"
1853 msmpeg4v2_decoder_select="h263_decoder"
1854 msmpeg4v2_encoder_select="h263_encoder"
1855 msmpeg4v3_decoder_select="h263_decoder"
1856 msmpeg4v3_encoder_select="h263_encoder"
1857 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
1858 mxpeg_decoder_select="mjpeg_decoder"
1859 nellymoser_decoder_select="mdct sinewin"
1860 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1861 nuv_decoder_select="idctdsp lzo"
1862 on2avc_decoder_select="mdct"
1863 opus_decoder_deps="avresample"
1864 png_decoder_deps="zlib"
1865 png_encoder_deps="zlib"
1866 png_encoder_select="huffyuvencdsp"
1867 prores_decoder_select="idctdsp"
1868 prores_encoder_select="fdctdsp"
1869 qcelp_decoder_select="lsp"
1870 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1871 ra_144_encoder_select="audio_frame_queue lpc"
1872 ralf_decoder_select="golomb"
1873 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1874 rv10_encoder_select="h263_encoder"
1875 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1876 rv20_encoder_select="h263_encoder"
1877 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1878 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1879 shorten_decoder_select="golomb"
1880 sipr_decoder_select="lsp"
1881 sp5x_decoder_select="mjpeg_decoder"
1882 svq1_decoder_select="hpeldsp"
1883 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
1884 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1885 svq3_decoder_suggest="zlib"
1886 tak_decoder_select="audiodsp"
1887 theora_decoder_select="vp3_decoder"
1888 thp_decoder_select="mjpeg_decoder"
1889 tiff_decoder_suggest="zlib"
1890 tiff_encoder_suggest="zlib"
1891 truehd_decoder_select="mlp_decoder"
1892 truemotion2_decoder_select="bswapdsp"
1893 truespeech_decoder_select="bswapdsp"
1894 tscc_decoder_deps="zlib"
1895 twinvq_decoder_select="mdct lsp sinewin"
1896 utvideo_decoder_select="bswapdsp"
1897 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
1898 vble_decoder_select="huffyuvdsp"
1899 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
1900 vc1image_decoder_select="vc1_decoder"
1901 vorbis_decoder_select="mdct"
1902 vorbis_encoder_select="mdct"
1903 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1904 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1905 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1906 vp6a_decoder_select="vp6_decoder"
1907 vp6f_decoder_select="vp6_decoder"
1908 vp7_decoder_select="h264pred videodsp"
1909 vp8_decoder_select="h264pred videodsp"
1910 vp9_decoder_select="videodsp"
1911 webp_decoder_select="vp8_decoder"
1912 wmapro_decoder_select="mdct sinewin wma_freqs"
1913 wmav1_decoder_select="mdct sinewin wma_freqs"
1914 wmav1_encoder_select="mdct sinewin wma_freqs"
1915 wmav2_decoder_select="mdct sinewin wma_freqs"
1916 wmav2_encoder_select="mdct sinewin wma_freqs"
1917 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1918 wmv1_decoder_select="h263_decoder"
1919 wmv1_encoder_select="h263_encoder"
1920 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
1921 wmv2_encoder_select="h263_encoder"
1922 wmv3_decoder_select="vc1_decoder"
1923 wmv3image_decoder_select="wmv3_decoder"
1924 zerocodec_decoder_deps="zlib"
1925 zlib_decoder_deps="zlib"
1926 zlib_encoder_deps="zlib"
1927 zmbv_decoder_deps="zlib"
1928 zmbv_encoder_deps="zlib"
1929
1930 # hardware accelerators
1931 dxva2_deps="dxva2api_h"
1932 vaapi_deps="va_va_h"
1933 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1934 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1935 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1936
1937 h263_vaapi_hwaccel_deps="vaapi"
1938 h263_vaapi_hwaccel_select="h263_decoder"
1939 h263_vdpau_hwaccel_deps="vdpau"
1940 h263_vdpau_hwaccel_select="h263_decoder"
1941 h264_dxva2_hwaccel_deps="dxva2"
1942 h264_dxva2_hwaccel_select="h264_decoder"
1943 h264_vaapi_hwaccel_deps="vaapi"
1944 h264_vaapi_hwaccel_select="h264_decoder"
1945 h264_vda_hwaccel_deps="vda"
1946 h264_vda_hwaccel_select="h264_decoder"
1947 h264_vda_old_hwaccel_deps="vda"
1948 h264_vda_old_hwaccel_select="h264_decoder"
1949 h264_vdpau_hwaccel_deps="vdpau"
1950 h264_vdpau_hwaccel_select="h264_decoder"
1951 mpeg1_vdpau_hwaccel_deps="vdpau"
1952 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1953 mpeg2_dxva2_hwaccel_deps="dxva2"
1954 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1955 mpeg2_vaapi_hwaccel_deps="vaapi"
1956 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1957 mpeg2_vdpau_hwaccel_deps="vdpau"
1958 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1959 mpeg4_vaapi_hwaccel_deps="vaapi"
1960 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1961 mpeg4_vdpau_hwaccel_deps="vdpau"
1962 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1963 vc1_dxva2_hwaccel_deps="dxva2"
1964 vc1_dxva2_hwaccel_select="vc1_decoder"
1965 vc1_vaapi_hwaccel_deps="vaapi"
1966 vc1_vaapi_hwaccel_select="vc1_decoder"
1967 vc1_vdpau_hwaccel_deps="vdpau"
1968 vc1_vdpau_hwaccel_select="vc1_decoder"
1969 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1970 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1971 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1972
1973 # parsers
1974 h264_parser_select="h264_decoder"
1975 mpegvideo_parser_select="mpegvideo"
1976 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
1977 vc1_parser_select="mpegvideo startcode"
1978
1979 # external libraries
1980 libfaac_encoder_deps="libfaac"
1981 libfaac_encoder_select="audio_frame_queue"
1982 libfdk_aac_decoder_deps="libfdk_aac"
1983 libfdk_aac_encoder_deps="libfdk_aac"
1984 libfdk_aac_encoder_select="audio_frame_queue"
1985 libgsm_decoder_deps="libgsm"
1986 libgsm_encoder_deps="libgsm"
1987 libgsm_ms_decoder_deps="libgsm"
1988 libgsm_ms_encoder_deps="libgsm"
1989 libilbc_decoder_deps="libilbc"
1990 libilbc_encoder_deps="libilbc"
1991 libmp3lame_encoder_deps="libmp3lame"
1992 libmp3lame_encoder_select="audio_frame_queue"
1993 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1994 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1995 libopencore_amrnb_encoder_select="audio_frame_queue"
1996 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1997 libopenjpeg_decoder_deps="libopenjpeg"
1998 libopenjpeg_encoder_deps="libopenjpeg"
1999 libopus_decoder_deps="libopus"
2000 libopus_encoder_deps="libopus"
2001 libopus_encoder_select="audio_frame_queue"
2002 libschroedinger_decoder_deps="libschroedinger"
2003 libschroedinger_encoder_deps="libschroedinger"
2004 libspeex_decoder_deps="libspeex"
2005 libspeex_encoder_deps="libspeex"
2006 libspeex_encoder_select="audio_frame_queue"
2007 libtheora_encoder_deps="libtheora"
2008 libtwolame_encoder_deps="libtwolame"
2009 libvo_aacenc_encoder_deps="libvo_aacenc"
2010 libvo_aacenc_encoder_select="audio_frame_queue"
2011 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2012 libvorbis_encoder_deps="libvorbis"
2013 libvorbis_encoder_select="audio_frame_queue"
2014 libvpx_vp8_decoder_deps="libvpx"
2015 libvpx_vp8_encoder_deps="libvpx"
2016 libvpx_vp9_decoder_deps="libvpx"
2017 libvpx_vp9_encoder_deps="libvpx"
2018 libwavpack_encoder_deps="libwavpack"
2019 libwebp_encoder_deps="libwebp"
2020 libx264_encoder_deps="libx264"
2021 libx265_encoder_deps="libx265"
2022 libxavs_encoder_deps="libxavs"
2023 libxvid_encoder_deps="libxvid"
2024
2025 # demuxers / muxers
2026 ac3_demuxer_select="ac3_parser"
2027 asf_demuxer_select="riffdec"
2028 asf_muxer_select="riffenc"
2029 asf_stream_muxer_select="asf_muxer"
2030 avi_demuxer_select="riffdec"
2031 avi_muxer_select="riffenc"
2032 avisynth_demuxer_deps="avisynth"
2033 avisynth_demuxer_select="riffdec"
2034 caf_demuxer_select="riffdec"
2035 dirac_demuxer_select="dirac_parser"
2036 dv_demuxer_select="dvprofile"
2037 dv_muxer_select="dvprofile"
2038 dxa_demuxer_select="riffdec"
2039 eac3_demuxer_select="ac3_parser"
2040 f4v_muxer_select="mov_muxer"
2041 flac_demuxer_select="flac_parser"
2042 hds_muxer_select="flv_muxer"
2043 hls_muxer_select="mpegts_muxer"
2044 ipod_muxer_select="mov_muxer"
2045 ismv_muxer_select="mov_muxer"
2046 matroska_audio_muxer_select="matroska_muxer"
2047 matroska_demuxer_select="riffdec"
2048 matroska_demuxer_suggest="bzlib lzo zlib"
2049 matroska_muxer_select="riffenc"
2050 mmf_muxer_select="riffenc"
2051 mov_demuxer_select="riffdec"
2052 mov_demuxer_suggest="zlib"
2053 mov_muxer_select="riffenc rtpenc_chain"
2054 mp3_demuxer_select="mpegaudio_parser"
2055 mp4_muxer_select="mov_muxer"
2056 mpegts_muxer_select="adts_muxer latm_muxer"
2057 mpegtsraw_demuxer_select="mpegts_demuxer"
2058 mxf_d10_muxer_select="mxf_muxer"
2059 nut_muxer_select="riffenc"
2060 nuv_demuxer_select="riffdec"
2061 oga_muxer_select="ogg_muxer"
2062 ogg_demuxer_select="golomb"
2063 opus_muxer_select="ogg_muxer"
2064 psp_muxer_select="mov_muxer"
2065 rtp_demuxer_select="sdp_demuxer"
2066 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2067 rtsp_demuxer_select="http_protocol rtpdec"
2068 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2069 sap_demuxer_select="sdp_demuxer"
2070 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2071 sdp_demuxer_select="rtpdec"
2072 smoothstreaming_muxer_select="ismv_muxer"
2073 spdif_muxer_select="aac_parser"
2074 spx_muxer_select="ogg_muxer"
2075 tak_demuxer_select="tak_parser"
2076 tg2_muxer_select="mov_muxer"
2077 tgp_muxer_select="mov_muxer"
2078 w64_demuxer_select="wav_demuxer"
2079 wav_demuxer_select="riffdec"
2080 wav_muxer_select="riffenc"
2081 webm_muxer_select="riffenc"
2082 wtv_demuxer_select="riffdec"
2083 xmv_demuxer_select="riffdec"
2084 xwma_demuxer_select="riffdec"
2085
2086 # indevs / outdevs
2087 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2088 alsa_outdev_deps="alsa_asoundlib_h"
2089 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2090 dv1394_indev_deps="dv1394"
2091 dv1394_indev_select="dv_demuxer"
2092 fbdev_indev_deps="linux_fb_h"
2093 jack_indev_deps="jack_jack_h pthreads"
2094 libcdio_indev_deps="libcdio"
2095 libdc1394_indev_deps="libdc1394"
2096 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2097 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2098 pulse_indev_deps="libpulse"
2099 sndio_indev_deps="sndio_h"
2100 sndio_outdev_deps="sndio_h"
2101 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2102 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2103 vfwcap_indev_extralibs="-lavicap32"
2104 x11grab_indev_deps="x11grab XShmCreateImage"
2105
2106 # protocols
2107 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2108 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2109 ffrtmpcrypt_protocol_select="tcp_protocol"
2110 ffrtmphttp_protocol_deps="!librtmp_protocol"
2111 ffrtmphttp_protocol_select="http_protocol"
2112 gopher_protocol_select="network"
2113 http_protocol_select="tcp_protocol"
2114 httpproxy_protocol_select="tcp_protocol"
2115 https_protocol_select="tls_protocol"
2116 icecast_protocol_select="http_protocol"
2117 librtmp_protocol_deps="librtmp"
2118 librtmpe_protocol_deps="librtmp"
2119 librtmps_protocol_deps="librtmp"
2120 librtmpt_protocol_deps="librtmp"
2121 librtmpte_protocol_deps="librtmp"
2122 mmsh_protocol_select="http_protocol"
2123 mmst_protocol_select="network"
2124 rtmp_protocol_deps="!librtmp_protocol"
2125 rtmp_protocol_select="tcp_protocol"
2126 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2127 rtmps_protocol_deps="!librtmp_protocol"
2128 rtmps_protocol_select="tls_protocol"
2129 rtmpt_protocol_select="ffrtmphttp_protocol"
2130 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2131 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2132 rtp_protocol_select="udp_protocol"
2133 sctp_protocol_deps="struct_sctp_event_subscribe"
2134 sctp_protocol_select="network"
2135 srtp_protocol_select="rtp_protocol"
2136 tcp_protocol_select="network"
2137 tls_protocol_deps_any="openssl gnutls"
2138 tls_protocol_select="tcp_protocol"
2139 udp_protocol_select="network"
2140 unix_protocol_deps="sys_un_h"
2141 unix_protocol_select="network"
2142
2143 # filters
2144 blackframe_filter_deps="gpl"
2145 boxblur_filter_deps="gpl"
2146 bs2b_filter_deps="libbs2b"
2147 cropdetect_filter_deps="gpl"
2148 delogo_filter_deps="gpl"
2149 drawtext_filter_deps="libfreetype"
2150 frei0r_filter_deps="frei0r dlopen"
2151 frei0r_filter_extralibs='$ldl'
2152 frei0r_src_filter_deps="frei0r dlopen"
2153 frei0r_src_filter_extralibs='$ldl'
2154 hqdn3d_filter_deps="gpl"
2155 interlace_filter_deps="gpl"
2156 ocv_filter_deps="libopencv"
2157 resample_filter_deps="avresample"
2158 scale_filter_deps="swscale"
2159
2160 # examples
2161 avcodec_example_deps="avcodec avutil"
2162 filter_audio_example_deps="avfilter avutil"
2163 metadata_example_deps="avformat avutil"
2164 output_example_deps="avcodec avformat avutil swscale"
2165 transcode_aac_example_deps="avcodec avformat avresample"
2166
2167 # libraries, in linking order
2168 avcodec_deps="avutil"
2169 avdevice_deps="avformat avcodec avutil"
2170 avfilter_deps="avutil"
2171 avformat_deps="avcodec avutil"
2172 avresample_deps="avutil"
2173 swscale_deps="avutil"
2174
2175 # programs
2176 avconv_deps="avcodec avfilter avformat avresample swscale"
2177 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2178                fps_filter null_filter resample_filter scale_filter
2179                setpts_filter trim_filter"
2180 avplay_deps="avcodec avformat avresample swscale sdl"
2181 avplay_libs='$sdl_libs'
2182 avplay_select="rdft"
2183 avprobe_deps="avcodec avformat"
2184
2185 # documentation
2186 pod2man_deps="doc"
2187 texi2html_deps="doc"
2188
2189 # default parameters
2190
2191 logfile="config.log"
2192
2193 # installation paths
2194 prefix_default="/usr/local"
2195 bindir_default='${prefix}/bin'
2196 datadir_default='${prefix}/share/avconv'
2197 docdir_default='${prefix}/share/doc/libav'
2198 incdir_default='${prefix}/include'
2199 libdir_default='${prefix}/lib'
2200 mandir_default='${prefix}/share/man'
2201 shlibdir_default="$libdir_default"
2202
2203 # toolchain
2204 ar_default="ar"
2205 cc_default="gcc"
2206 host_cc_default="gcc"
2207 cp_f="cp -f"
2208 ln_s="ln -s -f"
2209 nm_default="nm -g"
2210 objformat="elf"
2211 pkg_config_default=pkg-config
2212 ranlib="ranlib"
2213 strip="strip"
2214 yasmexe="yasm"
2215
2216 # machine
2217 arch_default=$(uname -m)
2218 cpu="generic"
2219 intrinsics="none"
2220
2221 # OS
2222 target_os_default=$(tolower $(uname -s))
2223 host_os=$target_os_default
2224
2225 # configurable options
2226 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2227
2228 enable asm
2229 enable debug
2230 enable doc
2231 enable faan faandct faanidct
2232 enable optimizations
2233 enable safe_bitstream_reader
2234 enable static
2235 enable swscale_alpha
2236
2237 # By default, enable only those hwaccels that have no external dependencies.
2238 enable dxva2 vdpau
2239
2240 # build settings
2241 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2242 LIBPREF="lib"
2243 LIBSUF=".a"
2244 FULLNAME='$(NAME)$(BUILDSUF)'
2245 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2246 SLIBPREF="lib"
2247 SLIBSUF=".so"
2248 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2249 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2250 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2251 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2252 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2253 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2254
2255 asflags_filter=echo
2256 cflags_filter=echo
2257 ldflags_filter=echo
2258
2259 AS_C='-c'
2260 AS_O='-o $@'
2261 CC_C='-c'
2262 CC_E='-E -o $@'
2263 CC_O='-o $@'
2264 LD_O='-o $@'
2265 LD_LIB='-l%'
2266 LD_PATH='-L'
2267 HOSTCC_C='-c'
2268 HOSTCC_E='-E -o $@'
2269 HOSTCC_O='-o $@'
2270 HOSTLD_O='-o $@'
2271
2272 host_libs='-lm'
2273 host_cflags_filter=echo
2274 host_ldflags_filter=echo
2275
2276 target_path='$(CURDIR)'
2277
2278 # since the object filename is not given with the -MM flag, the compiler
2279 # is only able to print the basename, and we must add the path ourselves
2280 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2281 DEPFLAGS='-MM'
2282
2283 # find source path
2284 if test -f configure; then
2285     source_path=.
2286 else
2287     source_path=$(cd $(dirname "$0"); pwd)
2288     echo "$source_path" | grep -q '[[:blank:]]' &&
2289         die "Out of tree builds are impossible with whitespace in source path."
2290     test -e "$source_path/config.h" &&
2291         die "Out of tree builds are impossible with config.h in source dir."
2292 fi
2293
2294 for v in "$@"; do
2295     r=${v#*=}
2296     l=${v%"$r"}
2297     r=$(sh_quote "$r")
2298     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2299 done
2300
2301 find_things(){
2302     thing=$1
2303     pattern=$2
2304     file=$source_path/$3
2305     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2306 }
2307
2308 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2309 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2310 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2311 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2312 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2313 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2314 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2315 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2316 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2317 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2318 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2319
2320 ALL_COMPONENTS="
2321     $BSF_LIST
2322     $DECODER_LIST
2323     $DEMUXER_LIST
2324     $ENCODER_LIST
2325     $FILTER_LIST
2326     $HWACCEL_LIST
2327     $INDEV_LIST
2328     $MUXER_LIST
2329     $OUTDEV_LIST
2330     $PARSER_LIST
2331     $PROTOCOL_LIST
2332 "
2333
2334 for n in $COMPONENT_LIST; do
2335     v=$(toupper ${n%s})_LIST
2336     eval enable \$$v
2337     eval ${n}_if_any="\$$v"
2338 done
2339
2340 enable $ARCH_EXT_LIST
2341
2342 die_unknown(){
2343     echo "Unknown option \"$1\"."
2344     echo "See $0 --help for available options."
2345     exit 1
2346 }
2347
2348 print_3_columns() {
2349     cat | tr ' ' '\n' | sort | pr -r -3 -t
2350 }
2351
2352 show_list() {
2353     suffix=_$1
2354     shift
2355     echo $* | sed s/$suffix//g | print_3_columns
2356     exit 0
2357 }
2358
2359 rand_list(){
2360     IFS=', '
2361     set -- $*
2362     unset IFS
2363     for thing; do
2364         comp=${thing%:*}
2365         prob=${thing#$comp}
2366         prob=${prob#:}
2367         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2368         echo "prob ${prob:-0.5}"
2369         printf '%s\n' $comp
2370     done
2371 }
2372
2373 do_random(){
2374     action=$1
2375     shift
2376     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2377     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2378 }
2379
2380 for opt do
2381     optval="${opt#*=}"
2382     case "$opt" in
2383         --extra-ldflags=*)
2384             add_ldflags $optval
2385         ;;
2386         --extra-ldexeflags=*)
2387             add_ldexeflags $optval
2388         ;;
2389         --extra-libs=*)
2390             add_extralibs $optval
2391         ;;
2392         --disable-devices)
2393             disable $INDEV_LIST $OUTDEV_LIST
2394         ;;
2395         --enable-debug=*)
2396             debuglevel="$optval"
2397         ;;
2398         --disable-programs)
2399             disable $PROGRAM_LIST
2400         ;;
2401         --disable-everything)
2402             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2403         ;;
2404         --disable-all)
2405             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2406             disable $LIBRARY_LIST $PROGRAM_LIST doc
2407         ;;
2408         --enable-random|--disable-random)
2409             action=${opt%%-random}
2410             do_random ${action#--} $COMPONENT_LIST
2411         ;;
2412         --enable-random=*|--disable-random=*)
2413             action=${opt%%-random=*}
2414             do_random ${action#--} $optval
2415         ;;
2416         --enable-*=*|--disable-*=*)
2417             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2418             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2419             eval list=\$$(toupper $thing)_LIST
2420             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2421             $action $(filter "$name" $list)
2422         ;;
2423         --enable-avserver|--disable-avserver*)
2424             warn "avserver has been removed, the ${opt} option is only"\
2425                  "provided for compatibility and will be removed in the future"
2426         ;;
2427         --enable-?*|--disable-?*)
2428             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2429             if is_in $option $COMPONENT_LIST; then
2430                 test $action = disable && action=unset
2431                 eval $action \$$(toupper ${option%s})_LIST
2432             elif is_in $option $CMDLINE_SELECT; then
2433                 $action $option
2434             else
2435                 die_unknown $opt
2436             fi
2437         ;;
2438         --list-*)
2439             NAME="${opt#--list-}"
2440             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2441             NAME=${NAME%s}
2442             eval show_list $NAME \$$(toupper $NAME)_LIST
2443         ;;
2444         --help|-h) show_help
2445         ;;
2446         *)
2447             optname="${opt%%=*}"
2448             optname="${optname#--}"
2449             optname=$(echo "$optname" | sed 's/-/_/g')
2450             if is_in $optname $CMDLINE_SET; then
2451                 eval $optname='$optval'
2452             elif is_in $optname $CMDLINE_APPEND; then
2453                 append $optname "$optval"
2454             else
2455                 die_unknown $opt
2456             fi
2457         ;;
2458     esac
2459 done
2460
2461 disabled logging && logfile=/dev/null
2462
2463 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2464 set >> $logfile
2465
2466 test -n "$cross_prefix" && enable cross_compile
2467
2468 if enabled cross_compile; then
2469     test -n "$arch" && test -n "$target_os" ||
2470         die "Must specify target arch and OS when cross-compiling"
2471 fi
2472
2473 ar_default="${cross_prefix}${ar_default}"
2474 cc_default="${cross_prefix}${cc_default}"
2475 nm_default="${cross_prefix}${nm_default}"
2476 pkg_config_default="${cross_prefix}${pkg_config_default}"
2477 ranlib="${cross_prefix}${ranlib}"
2478 strip="${cross_prefix}${strip}"
2479
2480 sysinclude_default="${sysroot}/usr/include"
2481
2482 case "$toolchain" in
2483     clang-asan)
2484         cc_default="clang"
2485         add_cflags  -fsanitize=address
2486         add_ldflags -fsanitize=address
2487     ;;
2488     clang-tsan)
2489         cc_default="clang"
2490         add_cflags  -fsanitize=thread -pie
2491         add_ldflags -fsanitize=thread -pie
2492     ;;
2493     clang-usan)
2494         cc_default="clang"
2495         add_cflags  -fsanitize=undefined -O1
2496         add_ldflags -fsanitize=undefined
2497     ;;
2498     gcc-asan)
2499         cc_default="gcc"
2500         add_cflags  -fsanitize=address
2501         add_ldflags -fsanitize=address
2502     ;;
2503     gcc-tsan)
2504         cc_default="gcc"
2505         add_cflags  -fsanitize=thread -pie -fPIC
2506         add_ldflags -fsanitize=thread -pie -fPIC
2507     ;;
2508     gcc-usan)
2509         cc_default="gcc"
2510         add_cflags  -fsanitize=undefined
2511         add_ldflags -fsanitize=undefined
2512     ;;
2513     valgrind-massif)
2514         target_exec_default="valgrind"
2515         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2516     ;;
2517     valgrind-memcheck)
2518         target_exec_default="valgrind"
2519         target_exec_args="--track-origins=yes --leak-check=full"
2520     ;;
2521     msvc)
2522         # Check whether the current MSVC version needs the C99 converter.
2523         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2524         # support enough of C99 to build libav. Default to the new
2525         # behaviour if the regexp was unable to match anything, since this
2526         # successfully parses the version number of existing supported
2527         # versions that require the converter (MSVC 2010 and 2012).
2528         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2529         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2530             cc_default="cl"
2531         else
2532             cc_default="c99wrap cl"
2533         fi
2534         ld_default="link"
2535         nm_default="dumpbin -symbols"
2536         ar_default="lib"
2537         target_os_default="win32"
2538         # Use a relative path for TMPDIR. This makes sure all the
2539         # ffconf temp files are written with a relative path, avoiding
2540         # issues with msys/win32 path conversion for MSVC parameters
2541         # such as -Fo<file> or -out:<file>.
2542         TMPDIR=.
2543     ;;
2544     icl)
2545         cc_default="icl"
2546         ld_default="xilink"
2547         nm_default="dumpbin -symbols"
2548         ar_default="xilib"
2549         target_os_default="win32"
2550         TMPDIR=.
2551     ;;
2552     gcov)
2553         add_cflags  -fprofile-arcs -ftest-coverage
2554         add_ldflags -fprofile-arcs -ftest-coverage
2555     ;;
2556     hardened)
2557         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2558         add_cflags   -fno-strict-overflow -fstack-protector-all
2559         add_ldflags  -Wl,-z,relro -Wl,-z,now
2560     ;;
2561     ?*)
2562         die "Unknown toolchain $toolchain"
2563     ;;
2564 esac
2565
2566 set_default arch cc pkg_config sysinclude target_exec target_os
2567 enabled cross_compile || host_cc_default=$cc
2568 set_default host_cc
2569
2570 if ! $pkg_config --version >/dev/null 2>&1; then
2571     warn "$pkg_config not found, library detection may fail."
2572     pkg_config=false
2573 fi
2574
2575 exesuf() {
2576     case $1 in
2577         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2578     esac
2579 }
2580
2581 EXESUF=$(exesuf $target_os)
2582 HOSTEXESUF=$(exesuf $host_os)
2583
2584 # set temporary file name
2585 : ${TMPDIR:=$TEMPDIR}
2586 : ${TMPDIR:=$TMP}
2587 : ${TMPDIR:=/tmp}
2588
2589 if ! check_cmd mktemp -u XXXXXX; then
2590     # simple replacement for missing mktemp
2591     # NOT SAFE FOR GENERAL USE
2592     mktemp(){
2593         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2594     }
2595 fi
2596
2597 tmpfile(){
2598     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2599         (set -C; exec > $tmp) 2>/dev/null ||
2600         die "Unable to create temporary file in $TMPDIR."
2601     append TMPFILES $tmp
2602     eval $1=$tmp
2603 }
2604
2605 trap 'rm -f -- $TMPFILES' EXIT
2606
2607 tmpfile TMPASM .asm
2608 tmpfile TMPC   .c
2609 tmpfile TMPE   $EXESUF
2610 tmpfile TMPH   .h
2611 tmpfile TMPO   .o
2612 tmpfile TMPS   .S
2613 tmpfile TMPSH  .sh
2614 tmpfile TMPV   .ver
2615
2616 unset -f mktemp
2617
2618 chmod +x $TMPE
2619
2620 # make sure we can execute files in $TMPDIR
2621 cat > $TMPSH 2>> $logfile <<EOF
2622 #! /bin/sh
2623 EOF
2624 chmod +x $TMPSH >> $logfile 2>&1
2625 if ! $TMPSH >> $logfile 2>&1; then
2626     cat <<EOF
2627 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2628 variable to another directory and make sure that it is not mounted noexec.
2629 EOF
2630     die "Sanity test failed."
2631 fi
2632
2633 armasm_flags(){
2634     for flag; do
2635         case $flag in
2636             # Filter out MSVC cl.exe options from cflags that shouldn't
2637             # be passed to gas-preprocessor
2638             -M[TD]*)                                            ;;
2639             *)                  echo $flag                      ;;
2640         esac
2641    done
2642 }
2643
2644 ccc_flags(){
2645     for flag; do
2646         case $flag in
2647             -std=c99)           echo -c99                       ;;
2648             -mcpu=*)            echo -arch ${flag#*=}           ;;
2649             -mieee)             echo -ieee                      ;;
2650             -O*|-fast)          echo $flag                      ;;
2651             -fno-math-errno)    echo -assume nomath_errno       ;;
2652             -g)                 echo -g3                        ;;
2653             -Wall)              echo -msg_enable level2         ;;
2654             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2655             -Wl,*)              echo $flag                      ;;
2656             -f*|-W*)                                            ;;
2657             *)                  echo $flag                      ;;
2658         esac
2659    done
2660 }
2661
2662 cparser_flags(){
2663     for flag; do
2664         case $flag in
2665             -Wno-switch)             echo -Wno-switch-enum ;;
2666             -Wno-format-zero-length) ;;
2667             -Wdisabled-optimization) ;;
2668             -Wno-pointer-sign)       echo -Wno-other ;;
2669             *)                       echo $flag ;;
2670         esac
2671     done
2672 }
2673
2674 msvc_common_flags(){
2675     for flag; do
2676         case $flag in
2677             # In addition to specifying certain flags under the compiler
2678             # specific filters, they must be specified here as well or else the
2679             # generic catch all at the bottom will print the original flag.
2680             -Wall)                ;;
2681             -std=c99)             ;;
2682             # Common flags
2683             -fomit-frame-pointer) ;;
2684             -g)                   echo -Z7 ;;
2685             -fno-math-errno)      ;;
2686             -fno-common)          ;;
2687             -fno-signed-zeros)    ;;
2688             -fPIC)                ;;
2689             -mthumb)              ;;
2690             -march=*)             ;;
2691             -lz)                  echo zlib.lib ;;
2692             -lavifil32)           echo vfw32.lib ;;
2693             -lavicap32)           echo vfw32.lib user32.lib ;;
2694             -l*)                  echo ${flag#-l}.lib ;;
2695             *)                    echo $flag ;;
2696         esac
2697     done
2698 }
2699
2700 msvc_flags(){
2701     msvc_common_flags "$@"
2702     for flag; do
2703         case $flag in
2704             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2705                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2706                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2707                                        -wd4273 -wd4701 ;;
2708         esac
2709     done
2710 }
2711
2712 icl_flags(){
2713     msvc_common_flags "$@"
2714     for flag; do
2715         case $flag in
2716             # Despite what Intel's documentation says -Wall, which is supported
2717             # on Windows, does enable remarks so disable them here.
2718             -Wall)                echo $flag -Qdiag-disable:remark ;;
2719             -std=c99)             echo -Qstd=c99 ;;
2720         esac
2721     done
2722 }
2723
2724 pgi_flags(){
2725     for flag; do
2726         case $flag in
2727             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2728             -fomit-frame-pointer) echo -Mnoframe ;;
2729             -g)                   echo -gopt ;;
2730             *)                    echo $flag ;;
2731         esac
2732     done
2733 }
2734
2735 suncc_flags(){
2736     for flag; do
2737         case $flag in
2738             -march=*|-mcpu=*)
2739                 case "${flag#*=}" in
2740                     native)                   echo -xtarget=native       ;;
2741                     v9|niagara)               echo -xarch=sparc          ;;
2742                     ultrasparc)               echo -xarch=sparcvis       ;;
2743                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2744                     i586|pentium)             echo -xchip=pentium        ;;
2745                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2746                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2747                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2748                     pentium4*)          echo -xtarget=pentium4           ;;
2749                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2750                     *-sse3)             echo -xarch=sse3                 ;;
2751                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2752                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2753                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2754                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2755                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2756                     k8|opteron|athlon64|athlon-fx)
2757                                                echo -xarch=sse2a         ;;
2758                     athlon*)                   echo -xarch=pentium_proa  ;;
2759                 esac
2760                 ;;
2761             -std=c99)             echo -xc99              ;;
2762             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2763             -fPIC)                echo -KPIC -xcode=pic32 ;;
2764             -W*,*)                echo $flag              ;;
2765             -f*-*|-W*|-mimpure-text)                      ;;
2766             -shared)              echo -G                 ;;
2767             *)                    echo $flag              ;;
2768         esac
2769     done
2770 }
2771
2772 tms470_flags(){
2773     for flag; do
2774         case $flag in
2775             -march=*|-mcpu=*)
2776                 case "${flag#*=}" in
2777                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2778                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2779                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2780                     armv6*|arm11*)          echo -mv=6   ;;
2781                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2782                                             echo -mv=5e  ;;
2783                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2784                 esac
2785                 ;;
2786             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2787             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2788             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2789             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2790             -msoft-float)   echo --float_support=vfplib       ;;
2791             -O[0-3]|-mf=*)  echo $flag                        ;;
2792             -g)             echo -g -mn                       ;;
2793             -pds=*)         echo $flag                        ;;
2794             -D*|-I*)        echo $flag                        ;;
2795             --gcc|--abi=*)  echo $flag                        ;;
2796             -me)            echo $flag                        ;;
2797         esac
2798     done
2799 }
2800
2801 probe_cc(){
2802     pfx=$1
2803     _cc=$2
2804
2805     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2806     unset _ld_o _ldflags _ld_lib _ld_path
2807     unset _depflags _DEPCMD _DEPFLAGS
2808     _flags_filter=echo
2809
2810     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2811         _type=llvm_gcc
2812         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2813         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2814         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2815         _cflags_speed='-O3'
2816         _cflags_size='-Os'
2817     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2818         _type=gcc
2819         gcc_version=$($_cc --version | head -n1)
2820         gcc_basever=$($_cc -dumpversion)
2821         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2822         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2823         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2824         if ! $_cc -dumpversion | grep -q '^2\.'; then
2825             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2826         fi
2827         _cflags_speed='-O3'
2828         _cflags_size='-Os'
2829     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2830         _type=icc
2831         _ident=$($_cc --version | head -n1)
2832         _depflags='-MMD'
2833         _cflags_speed='-O3'
2834         _cflags_size='-Os'
2835         _cflags_noopt='-O1'
2836     elif $_cc -v 2>&1 | grep -q xlc; then
2837         _type=xlc
2838         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2839         _cflags_speed='-O5'
2840         _cflags_size='-O5 -qcompact'
2841     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2842         _type=ccc
2843         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2844         _DEPFLAGS='-M'
2845         _cflags_speed='-fast'
2846         _cflags_size='-O1'
2847         _flags_filter=ccc_flags
2848     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2849         test -d "$sysroot" || die "No valid sysroot specified."
2850         _type=armcc
2851         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
2852         armcc_conf="$PWD/armcc.conf"
2853         $_cc --arm_linux_configure                 \
2854              --arm_linux_config_file="$armcc_conf" \
2855              --configure_sysroot="$sysroot"        \
2856              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2857              die "Error creating armcc configuration file."
2858         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2859         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2860         as_default="${cross_prefix}gcc"
2861         _depflags='-MMD'
2862         _cflags_speed='-O3'
2863         _cflags_size='-Os'
2864     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2865         _type=tms470
2866         _ident=$($_cc -version | head -n1 | tr -s ' ')
2867         _flags='--gcc --abi=eabi -me'
2868         _cc_e='-ppl -fe=$@'
2869         _cc_o='-fe=$@'
2870         _depflags='-ppa -ppd=$(@:.o=.d)'
2871         _cflags_speed='-O3 -mf=5'
2872         _cflags_size='-O3 -mf=2'
2873         _flags_filter=tms470_flags
2874     elif $_cc -v 2>&1 | grep -q clang; then
2875         _type=clang
2876         _ident=$($_cc --version | head -n1)
2877         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2878         _cflags_speed='-O3'
2879         _cflags_size='-Os'
2880     elif $_cc -V 2>&1 | grep -q Sun; then
2881         _type=suncc
2882         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2883         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2884         _DEPFLAGS='-xM1 -xc99'
2885         _ldflags='-std=c99'
2886         _cflags_speed='-O5'
2887         _cflags_size='-O5 -xspace'
2888         _flags_filter=suncc_flags
2889     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2890         _type=pathscale
2891         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2892         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2893         _cflags_speed='-O2'
2894         _cflags_size='-Os'
2895         _flags_filter='filter_out -Wdisabled-optimization'
2896     elif $_cc -v 2>&1 | grep -q Open64; then
2897         _type=open64
2898         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2899         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2900         _cflags_speed='-O2'
2901         _cflags_size='-Os'
2902         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2903     elif $_cc -V 2>&1 | grep -q Portland; then
2904         _type=pgi
2905         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2906         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2907         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2908         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2909         _cflags_noopt="-O1"
2910         _flags_filter=pgi_flags
2911     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
2912         _type=armasm
2913         _ident=$($_cc | head -n1)
2914         # 4509: "This form of conditional instruction is deprecated"
2915         _flags="-nologo -ignore 4509"
2916         _flags_filter=armasm_flags
2917     elif $_cc 2>&1 | grep -q Microsoft; then
2918         _type=msvc
2919         _ident=$($cc 2>&1 | head -n1)
2920         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2921         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2922         _cflags_speed="-O2"
2923         _cflags_size="-O1"
2924         if $_cc 2>&1 | grep -q Linker; then
2925             _ld_o='-out:$@'
2926         else
2927             _ld_o='-Fe$@'
2928         fi
2929         _cc_o='-Fo$@'
2930         _cc_e='-P -Fi$@'
2931         _flags_filter=msvc_flags
2932         _ld_lib='lib%.a'
2933         _ld_path='-libpath:'
2934         _flags='-nologo'
2935         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2936         if [ $pfx = hostcc ]; then
2937             append _cflags -Dsnprintf=_snprintf
2938         fi
2939     elif $_cc 2>&1 | grep -q Intel; then
2940         _type=icl
2941         _ident=$($cc 2>&1 | head -n1)
2942         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2943         # Not only is O3 broken on 13.x+ but it is slower on all previous
2944         # versions (tested) as well.
2945         _cflags_speed="-O2"
2946         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2947         if $_cc 2>&1 | grep -q Linker; then
2948             _ld_o='-out:$@'
2949         else
2950             _ld_o='-Fe$@'
2951         fi
2952         _cc_o='-Fo$@'
2953         _cc_e='-P'
2954         _flags_filter=icl_flags
2955         _ld_lib='lib%.a'
2956         _ld_path='-libpath:'
2957         # -Qdiag-error to make icl error when seeing certain unknown arguments
2958         _flags='-nologo -Qdiag-error:4044,10157'
2959         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2960         # with MSVC which enables it by default.
2961         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2962         if [ $pfx = hostcc ]; then
2963             append _cflags -Dsnprintf=_snprintf
2964         fi
2965     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2966         _type=cparser
2967         _ident=$($_cc --version | head -n1)
2968         _depflags='-MMD'
2969         _cflags_speed='-O4'
2970         _cflags_size='-O2'
2971         _flags_filter=cparser_flags
2972     fi
2973
2974     eval ${pfx}_type=\$_type
2975     eval ${pfx}_ident=\$_ident
2976 }
2977
2978 set_ccvars(){
2979     eval ${1}_C=\${_cc_c-\${${1}_C}}
2980     eval ${1}_E=\${_cc_e-\${${1}_E}}
2981     eval ${1}_O=\${_cc_o-\${${1}_O}}
2982
2983     if [ -n "$_depflags" ]; then
2984         eval ${1}_DEPFLAGS=\$_depflags
2985     else
2986         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2987         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2988         eval DEP${1}FLAGS=\$_flags
2989     fi
2990 }
2991
2992 probe_cc cc "$cc"
2993 cflags_filter=$_flags_filter
2994 cflags_speed=$_cflags_speed
2995 cflags_size=$_cflags_size
2996 cflags_noopt=$_cflags_noopt
2997 add_cflags $_flags $_cflags
2998 cc_ldflags=$_ldflags
2999 set_ccvars CC
3000
3001 probe_cc hostcc "$host_cc"
3002 host_cflags_filter=$_flags_filter
3003 add_host_cflags  $_flags $_cflags
3004 set_ccvars HOSTCC
3005
3006 test -n "$cc_type" && enable $cc_type ||
3007     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3008
3009 : ${as_default:=$cc}
3010 : ${dep_cc_default:=$cc}
3011 : ${ld_default:=$cc}
3012 : ${host_ld_default:=$host_cc}
3013 set_default ar as dep_cc ld host_ld
3014
3015 probe_cc as "$as"
3016 asflags_filter=$_flags_filter
3017 add_asflags $_flags $_cflags
3018 set_ccvars AS
3019
3020 probe_cc ld "$ld"
3021 ldflags_filter=$_flags_filter
3022 add_ldflags $_flags $_ldflags
3023 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3024 LD_O=${_ld_o-$LD_O}
3025 LD_LIB=${_ld_lib-$LD_LIB}
3026 LD_PATH=${_ld_path-$LD_PATH}
3027
3028 probe_cc hostld "$host_ld"
3029 host_ldflags_filter=$_flags_filter
3030 add_host_ldflags $_flags $_ldflags
3031 HOSTLD_O=${_ld_o-$HOSTLD_O}
3032
3033 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3034     probe_cc depcc "$dep_cc"
3035     CCDEP=${_DEPCMD:-$DEPCMD}
3036     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3037     DEPCCFLAGS=$_flags
3038 fi
3039
3040 if $ar 2>&1 | grep -q Microsoft; then
3041     arflags="-nologo"
3042     ar_o='-out:$@'
3043 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3044     arflags="rq"
3045     ar_o='$@'
3046 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3047     arflags='-Xany -r -c'
3048     ar_o='$@'
3049 else
3050     arflags="rc"
3051     ar_o='$@'
3052 fi
3053
3054 add_cflags $extra_cflags
3055 add_asflags $extra_cflags
3056
3057 if test -n "$sysroot"; then
3058     case "$cc_type" in
3059         gcc|llvm_gcc|clang)
3060             add_cppflags --sysroot="$sysroot"
3061             add_ldflags --sysroot="$sysroot"
3062         ;;
3063         tms470)
3064             add_cppflags -I"$sysinclude"
3065             add_ldflags  --sysroot="$sysroot"
3066         ;;
3067     esac
3068 fi
3069
3070 if test "$cpu" = host; then
3071     enabled cross_compile &&
3072         die "--cpu=host makes no sense when cross-compiling."
3073
3074     case "$cc_type" in
3075         gcc|llvm_gcc)
3076             check_native(){
3077                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3078                 sed -n "/cc1.*$1=/{
3079                             s/.*$1=\\([^ ]*\\).*/\\1/
3080                             p
3081                             q
3082                         }" $TMPE
3083             }
3084             cpu=$(check_native -march || check_native -mcpu)
3085         ;;
3086     esac
3087
3088     test "${cpu:-host}" = host &&
3089         die "--cpu=host not supported with compiler $cc"
3090 fi
3091
3092 # Deal with common $arch aliases
3093 case "$arch" in
3094     aarch64|arm64)
3095         arch="aarch64"
3096     ;;
3097     arm*)
3098         arch="arm"
3099     ;;
3100     mips*|IP*)
3101         arch="mips"
3102     ;;
3103     parisc*|hppa*)
3104         arch="parisc"
3105     ;;
3106     "Power Macintosh"|ppc*|powerpc*)
3107         arch="ppc"
3108     ;;
3109     s390|s390x)
3110         arch="s390"
3111     ;;
3112     sh4|sh)
3113         arch="sh4"
3114     ;;
3115     sun4u|sparc*)
3116         arch="sparc"
3117     ;;
3118     tilegx|tile-gx)
3119         arch="tilegx"
3120     ;;
3121     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3122         arch="x86"
3123     ;;
3124 esac
3125
3126 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3127 enable $arch
3128
3129 # Add processor-specific flags
3130 if enabled aarch64; then
3131
3132     case $cpu in
3133         armv*)
3134             cpuflags="-march=$cpu"
3135         ;;
3136         *)
3137             cpuflags="-mcpu=$cpu"
3138         ;;
3139     esac
3140
3141 elif enabled alpha; then
3142
3143     cpuflags="-mcpu=$cpu"
3144
3145 elif enabled arm; then
3146
3147     check_arm_arch() {
3148         check_cpp_condition stddef.h \
3149             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3150             $cpuflags
3151     }
3152
3153     probe_arm_arch() {
3154         if   check_arm_arch 4;        then echo armv4;
3155         elif check_arm_arch 4T;       then echo armv4t;
3156         elif check_arm_arch 5;        then echo armv5;
3157         elif check_arm_arch 5E;       then echo armv5e;
3158         elif check_arm_arch 5T;       then echo armv5t;
3159         elif check_arm_arch 5TE;      then echo armv5te;
3160         elif check_arm_arch 5TEJ;     then echo armv5te;
3161         elif check_arm_arch 6;        then echo armv6;
3162         elif check_arm_arch 6J;       then echo armv6j;
3163         elif check_arm_arch 6K;       then echo armv6k;
3164         elif check_arm_arch 6Z;       then echo armv6z;
3165         elif check_arm_arch 6ZK;      then echo armv6zk;
3166         elif check_arm_arch 6T2;      then echo armv6t2;
3167         elif check_arm_arch 7;        then echo armv7;
3168         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3169         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3170         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3171         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3172         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3173         fi
3174     }
3175
3176     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3177
3178     case $cpu in
3179         armv*)
3180             cpuflags="-march=$cpu"
3181             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3182         ;;
3183         *)
3184             cpuflags="-mcpu=$cpu"
3185             case $cpu in
3186                 cortex-a*)                               subarch=armv7a  ;;
3187                 cortex-r*)                               subarch=armv7r  ;;
3188                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3189                 arm11*)                                  subarch=armv6   ;;
3190                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3191                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3192                 *)                             subarch=$(probe_arm_arch) ;;
3193             esac
3194         ;;
3195     esac
3196
3197     case "$subarch" in
3198         armv5t*)    enable fast_clz                ;;
3199         armv[6-8]*) enable fast_clz fast_unaligned ;;
3200     esac
3201
3202 elif enabled avr32; then
3203
3204     case $cpu in
3205         ap7[02]0[0-2])
3206             subarch="avr32_ap"
3207             cpuflags="-mpart=$cpu"
3208         ;;
3209         ap)
3210             subarch="avr32_ap"
3211             cpuflags="-march=$cpu"
3212         ;;
3213         uc3[ab]*)
3214             subarch="avr32_uc"
3215             cpuflags="-mcpu=$cpu"
3216         ;;
3217         uc)
3218             subarch="avr32_uc"
3219             cpuflags="-march=$cpu"
3220         ;;
3221     esac
3222
3223 elif enabled bfin; then
3224
3225     cpuflags="-mcpu=$cpu"
3226
3227 elif enabled mips; then
3228
3229     cpuflags="-march=$cpu"
3230
3231 elif enabled ppc; then
3232
3233     disable ldbrx
3234
3235     case $(tolower $cpu) in
3236         601|ppc601|powerpc601)
3237             cpuflags="-mcpu=601"
3238             disable altivec
3239         ;;
3240         603*|ppc603*|powerpc603*)
3241             cpuflags="-mcpu=603"
3242             disable altivec
3243         ;;
3244         604*|ppc604*|powerpc604*)
3245             cpuflags="-mcpu=604"
3246             disable altivec
3247         ;;
3248         g3|75*|ppc75*|powerpc75*)
3249             cpuflags="-mcpu=750"
3250             disable altivec
3251         ;;
3252         g4|745*|ppc745*|powerpc745*)
3253             cpuflags="-mcpu=7450"
3254         ;;
3255         74*|ppc74*|powerpc74*)
3256             cpuflags="-mcpu=7400"
3257         ;;
3258         g5|970|ppc970|powerpc970)
3259             cpuflags="-mcpu=970"
3260         ;;
3261         power[3-7]*)
3262             cpuflags="-mcpu=$cpu"
3263         ;;
3264         cell)
3265             cpuflags="-mcpu=cell"
3266             enable ldbrx
3267         ;;
3268         e500mc)
3269             cpuflags="-mcpu=e500mc"
3270             disable altivec
3271         ;;
3272         e500v2)
3273             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3274             disable altivec
3275             disable dcbzl
3276         ;;
3277         e500)
3278             cpuflags="-mcpu=8540 -mhard-float"
3279             disable altivec
3280             disable dcbzl
3281         ;;
3282     esac
3283
3284 elif enabled sparc; then
3285
3286     case $cpu in
3287         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3288             cpuflags="-mcpu=$cpu"
3289         ;;
3290         ultrasparc*|niagara[234])
3291             cpuflags="-mcpu=$cpu"
3292         ;;
3293     esac
3294
3295 elif enabled x86; then
3296
3297     case $cpu in
3298         i[345]86|pentium)
3299             cpuflags="-march=$cpu"
3300             disable i686
3301             disable mmx
3302         ;;
3303         # targets that do NOT support nopl and conditional mov (cmov)
3304         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3305             cpuflags="-march=$cpu"
3306             disable i686
3307         ;;
3308         # targets that do support nopl and conditional mov (cmov)
3309         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3310             cpuflags="-march=$cpu"
3311             enable i686
3312             enable fast_cmov
3313         ;;
3314         # targets that do support conditional mov but on which it's slow
3315         pentium4|pentium4m|prescott|nocona)
3316             cpuflags="-march=$cpu"
3317             enable i686
3318             disable fast_cmov
3319         ;;
3320     esac
3321
3322 fi
3323
3324 if [ "$cpu" != generic ]; then
3325     add_cflags  $cpuflags
3326     add_asflags $cpuflags
3327 fi
3328
3329 # compiler sanity check
3330 check_exec <<EOF
3331 int main(void){ return 0; }
3332 EOF
3333 if test "$?" != 0; then
3334     echo "$cc is unable to create an executable file."
3335     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3336         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3337         echo "Only do this if you know what cross compiling means."
3338     fi
3339     die "C compiler test failed."
3340 fi
3341
3342 add_cppflags -D_ISOC99_SOURCE
3343 check_cflags -std=c99
3344 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3345 #include <stdlib.h>
3346 EOF
3347 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3348 #include <stdlib.h>
3349 EOF
3350
3351 add_host_cppflags -D_ISOC99_SOURCE
3352 check_host_cflags -std=c99
3353 check_host_cflags -Wall
3354 check_host_cflags -O3
3355
3356 check_64bit(){
3357     arch32=$1
3358     arch64=$2
3359     expr=$3
3360     check_code cc "" "int test[2*($expr) - 1]" &&
3361         subarch=$arch64 || subarch=$arch32
3362 }
3363
3364 case "$arch" in
3365     aarch64|alpha|ia64)
3366         spic=$shared
3367     ;;
3368     mips)
3369         check_64bit mips mips64 '_MIPS_SIM > 1'
3370         spic=$shared
3371     ;;
3372     parisc)
3373         check_64bit parisc parisc64 'sizeof(void *) > 4'
3374         spic=$shared
3375     ;;
3376     ppc)
3377         check_64bit ppc ppc64 'sizeof(void *) > 4'
3378         spic=$shared
3379     ;;
3380     s390)
3381         check_64bit s390 s390x 'sizeof(void *) > 4'
3382         spic=$shared
3383     ;;
3384     sparc)
3385         check_64bit sparc sparc64 'sizeof(void *) > 4'
3386         spic=$shared
3387     ;;
3388     x86)
3389         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3390         if test "$subarch" = "x86_64"; then
3391             spic=$shared
3392         fi
3393     ;;
3394 esac
3395
3396 enable $subarch
3397 enabled spic && enable_weak pic
3398
3399 # OS specific
3400 case $target_os in
3401     aix)
3402         SHFLAGS=-shared
3403         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3404         enabled shared && add_ldflags -Wl,-brtl
3405         ;;
3406     android)
3407         disable symver
3408         SLIB_INSTALL_NAME='$(SLIBNAME)'
3409         SLIB_INSTALL_LINKS=
3410         # soname not set on purpose
3411         SHFLAGS=-shared
3412         ;;
3413     haiku)
3414         prefix_default="/boot/common"
3415         network_extralibs="-lnetwork"
3416         host_libs=
3417         ;;
3418     sunos)
3419         SHFLAGS='-shared -Wl,-h,$$(@F)'
3420         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3421         network_extralibs="-lsocket -lnsl"
3422         # When using suncc to build, the Solaris linker will mark
3423         # an executable with each instruction set encountered by
3424         # the Solaris assembler.  As our libraries contain their own
3425         # guards for processor-specific code, instead suppress
3426         # generation of the HWCAPS ELF section on Solaris x86 only.
3427         enabled_all suncc x86 &&
3428             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3429             add_ldflags -Wl,-M,mapfile
3430         nm_default='nm -P -g'
3431         ;;
3432     netbsd)
3433         disable symver
3434         oss_indev_extralibs="-lossaudio"
3435         oss_outdev_extralibs="-lossaudio"
3436         ;;
3437     openbsd|bitrig)
3438         disable symver
3439         SHFLAGS='-shared'
3440         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3441         SLIB_INSTALL_LINKS=
3442         oss_indev_extralibs="-lossaudio"
3443         oss_outdev_extralibs="-lossaudio"
3444         ;;
3445     dragonfly)
3446         disable symver
3447         ;;
3448     freebsd)
3449         ;;
3450     bsd/os)
3451         add_extralibs -lpoll -lgnugetopt
3452         ;;
3453     darwin)
3454         enabled ppc && add_asflags -force_cpusubtype_ALL
3455         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3456         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3457         add_ldflags -Wl,-dynamic,-search_paths_first
3458         SLIBSUF=".dylib"
3459         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3460         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3461         objformat="macho"
3462         enabled x86_64 && objformat="macho64"
3463         enabled_any pic shared ||
3464             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3465         ;;
3466     mingw32*)
3467         if test $target_os = "mingw32ce"; then
3468             disable network
3469         else
3470             target_os=mingw32
3471         fi
3472         LIBTARGET=i386
3473         if enabled x86_64; then
3474             LIBTARGET="i386:x86-64"
3475         elif enabled arm; then
3476             LIBTARGET=arm-wince
3477         fi
3478         check_ldflags -Wl,--nxcompat
3479         check_ldflags -Wl,--dynamicbase
3480         shlibdir_default="$bindir_default"
3481         SLIBPREF=""
3482         SLIBSUF=".dll"
3483         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3484         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3485         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3486         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3487         SLIB_INSTALL_LINKS=
3488         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3489         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3490         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3491         objformat="win32"
3492         dlltool="${cross_prefix}dlltool"
3493         ranlib=:
3494         enable dos_paths
3495         ;;
3496     win32|win64)
3497         disable symver
3498         if enabled shared; then
3499             # Link to the import library instead of the normal static library
3500             # for shared libs.
3501             LD_LIB='%.lib'
3502             # Cannot build both shared and static libs with MSVC or icl.
3503             disable static
3504         fi
3505         shlibdir_default="$bindir_default"
3506         SLIBPREF=""
3507         SLIBSUF=".dll"
3508         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3509         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3510         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3511         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3512         SLIB_INSTALL_LINKS=
3513         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3514         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3515         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3516         objformat="win32"
3517         ranlib=:
3518         enable dos_paths
3519         ;;
3520     cygwin*)
3521         target_os=cygwin
3522         shlibdir_default="$bindir_default"
3523         SLIBPREF="cyg"
3524         SLIBSUF=".dll"
3525         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3526         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3527         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3528         SLIB_INSTALL_LINKS=
3529         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3530         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3531         objformat="win32"
3532         enable dos_paths
3533         ;;
3534     *-dos|freedos|opendos)
3535         network_extralibs="-lsocket"
3536         objformat="coff"
3537         enable dos_paths
3538         add_cppflags -U__STRICT_ANSI__
3539         ;;
3540     linux)
3541         enable dv1394
3542         ;;
3543     irix*)
3544         target_os=irix
3545         ranlib="echo ignoring ranlib"
3546         ;;
3547     os/2*)
3548         ln_s="cp -f"
3549         objformat="aout"
3550         add_cppflags -D_GNU_SOURCE
3551         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3552         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3553         LIBSUF="_s.a"
3554         SLIBPREF=""
3555         SLIBSUF=".dll"
3556         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3557         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3558         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3559             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3560             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3561             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3562             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3563             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3564         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3565             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3566         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3567         enable dos_paths
3568         ;;
3569     gnu/kfreebsd)
3570         add_cppflags -D_BSD_SOURCE
3571         ;;
3572     gnu)
3573         ;;
3574     qnx)
3575         add_cppflags -D_QNX_SOURCE
3576         network_extralibs="-lsocket"
3577         ;;
3578     symbian)
3579         SLIBSUF=".dll"
3580         enable dos_paths
3581         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3582         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3583         add_ldflags -Wl,--target1-abs,--no-undefined \
3584                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3585                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3586         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3587                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3588                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3589         ;;
3590     osf1)
3591         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3592         ;;
3593     minix)
3594         ;;
3595     plan9)
3596         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3597                      -D_REENTRANT_SOURCE        \
3598                      -D_RESEARCH_SOURCE         \
3599                      -DFD_SETSIZE=96            \
3600                      -DHAVE_SOCK_OPTS
3601         add_compat strtod.o strtod=avpriv_strtod
3602         network_extralibs='-lbsd'
3603         exeobjs=compat/plan9/main.o
3604         cp_f='cp'
3605         ;;
3606     none)
3607         ;;
3608     *)
3609         die "Unknown OS '$target_os'."
3610         ;;
3611 esac
3612
3613 # determine libc flavour
3614
3615 probe_libc(){
3616     pfx=$1
3617     pfx_no_=${pfx%_}
3618     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3619     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3620         eval ${pfx}libc_type=uclibc
3621         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3622     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3623         eval ${pfx}libc_type=glibc
3624         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3625     # MinGW headers can be installed on Cygwin, so check for newlib first.
3626     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3627         eval ${pfx}libc_type=newlib
3628         add_${pfx}cppflags -U__STRICT_ANSI__
3629     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3630     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3631         eval ${pfx}libc_type=mingw64
3632         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3633         eval test \$${pfx_no_}cc_type = "gcc" &&
3634             add_${pfx}cppflags -D__printf__=__gnu_printf__
3635     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3636          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3637         eval ${pfx}libc_type=mingw32
3638         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3639             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3640             die "ERROR: MinGW32 runtime version must be >= 3.15."
3641         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3642         eval test \$${pfx_no_}cc_type = "gcc" &&
3643             add_${pfx}cppflags -D__printf__=__gnu_printf__
3644     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3645         eval ${pfx}libc_type=msvcrt
3646         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3647         # 0x601 by default unless something else is set by the user.
3648         # This can easily lead to us detecting functions only present
3649         # in such new versions and producing binaries requiring windows 7.0.
3650         # Therefore explicitly set the default to XP unless the user has
3651         # set something else on the command line.
3652         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3653             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3654     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3655         eval ${pfx}libc_type=klibc
3656     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3657         eval ${pfx}libc_type=bionic
3658     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3659         eval ${pfx}libc_type=solaris
3660         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3661     else
3662         eval ${pfx}libc_type=default
3663         add_${pfx}cppflags -D_DEFAULT_SOURCE
3664     fi
3665 }
3666
3667 probe_libc
3668 test -n "$libc_type" && enable libc_$libc_type
3669 probe_libc host_
3670 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3671
3672 case $libc_type in
3673     bionic)
3674         add_compat strtod.o strtod=avpriv_strtod
3675         ;;
3676     msvcrt)
3677         add_compat strtod.o strtod=avpriv_strtod
3678         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3679                                      _snprintf=avpriv_snprintf  \
3680                                      vsnprintf=avpriv_vsnprintf
3681         ;;
3682 esac
3683
3684 # hacks for compiler/libc/os combinations
3685
3686 if enabled_all tms470 libc_glibc; then
3687     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3688     add_cppflags -D__USER_LABEL_PREFIX__=
3689     add_cppflags -D__builtin_memset=memset
3690     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3691     add_cflags   -pds=48    # incompatible redefinition of macro
3692 fi
3693
3694 if enabled_all ccc libc_glibc; then
3695     add_ldflags -Wl,-z,now  # calls to libots crash without this
3696 fi
3697
3698 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3699     add_cppflags '-I\$(SRC_PATH)/compat/float'
3700
3701 esc(){
3702     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3703 }
3704
3705 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3706
3707 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3708
3709 set_default $PATHS_LIST
3710 set_default nm
3711
3712 # we need to build at least one lib type
3713 if ! enabled_any static shared; then
3714     cat <<EOF
3715 At least one library type must be built.
3716 Specify --enable-static to build the static libraries or --enable-shared to
3717 build the shared libraries as well. To only build the shared libraries specify
3718 --disable-static in addition to --enable-shared.
3719 EOF
3720     exit 1;
3721 fi
3722
3723 die_license_disabled() {
3724     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3725 }
3726
3727 die_license_disabled gpl libcdio
3728 die_license_disabled gpl libx264
3729 die_license_disabled gpl libx265
3730 die_license_disabled gpl libxavs
3731 die_license_disabled gpl libxvid
3732 die_license_disabled gpl x11grab
3733
3734 die_license_disabled nonfree libfaac
3735 die_license_disabled nonfree libfdk_aac
3736 die_license_disabled nonfree openssl
3737
3738 die_license_disabled version3 libopencore_amrnb
3739 die_license_disabled version3 libopencore_amrwb
3740 die_license_disabled version3 libvo_aacenc
3741 die_license_disabled version3 libvo_amrwbenc
3742
3743 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3744
3745 disabled optimizations || check_cflags -fomit-frame-pointer
3746
3747 enable_weak_pic() {
3748     disabled pic && return
3749     enable pic
3750     add_cppflags -DPIC
3751     case "$target_os" in
3752     mingw*|cygwin*)
3753         ;;
3754     *)
3755         add_cflags -fPIC
3756         ;;
3757     esac
3758     add_asflags  -fPIC
3759 }
3760
3761 enabled pic && enable_weak_pic
3762
3763 check_cc <<EOF || die "Symbol mangling check failed."
3764 int ff_extern;
3765 EOF
3766 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3767 extern_prefix=${sym%%ff_extern*}
3768
3769 check_cc <<EOF && enable_weak inline_asm
3770 void foo(void) { __asm__ volatile ("" ::); }
3771 EOF
3772
3773 _restrict=
3774 for restrict_keyword in restrict __restrict__ __restrict; do
3775     check_cc <<EOF && _restrict=$restrict_keyword && break
3776 void foo(char * $restrict_keyword p);
3777 EOF
3778 done
3779
3780 check_cc <<EOF && enable pragma_deprecated
3781 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3782 EOF
3783
3784 check_cc <<EOF && enable attribute_packed
3785 struct { int x; } __attribute__((packed)) x;
3786 EOF
3787
3788 check_cc <<EOF && enable attribute_may_alias
3789 union { int x; } __attribute__((may_alias)) x;
3790 EOF
3791
3792 check_cc <<EOF || die "endian test failed"
3793 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3794 EOF
3795 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3796
3797 check_gas() {
3798     log "check_gas using '$as' as AS"
3799     # :vararg is used on aarch64, arm and ppc altivec
3800     check_as <<EOF || return 1
3801 .macro m n, y:vararg=0
3802 \n: .int \y
3803 .endm
3804 m x
3805 EOF
3806     # .altmacro is only used in arm asm
3807     ! enabled arm || check_as <<EOF || return 1
3808 .altmacro
3809 EOF
3810     enable gnu_as
3811     return 0
3812 }
3813
3814 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
3815     nogas=:
3816     enabled_any arm aarch64 && nogas=die
3817     enabled_all ppc altivec && nogas=warn
3818     as_noop=-v
3819
3820     case $as_type in
3821         arm*) gaspp_as_type=armasm; as_noop=-h ;;
3822         gcc)  gaspp_as_type=gas ;;
3823         *)    gaspp_as_type=$as_type ;;
3824     esac
3825
3826     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
3827
3828     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
3829         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
3830
3831     if ! check_gas ; then
3832         as=${gas:=$as}
3833         check_gas || \
3834             $nogas "GNU assembler not found, install/update gas-preprocessor"
3835     fi
3836
3837     check_as <<EOF && enable as_func
3838 .func test
3839 .endfunc
3840 EOF
3841 fi
3842
3843 check_inline_asm inline_asm_labels '"1:\n"'
3844
3845 if enabled aarch64; then
3846     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3847     # internal assembler in clang 3.3 does not support this instruction
3848     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3849     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3850
3851     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3852
3853 elif enabled alpha; then
3854
3855     check_cflags -mieee
3856
3857 elif enabled arm; then
3858
3859     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3860     enabled thumb && check_cflags -mthumb || check_cflags -marm
3861
3862     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3863         enable vfp_args
3864     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3865         case "${cross_prefix:-$cc}" in
3866             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3867             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3868 __asm__ (".eabi_attribute 28, 1");
3869 int main(void) { return 0; }
3870 EOF
3871         esac
3872         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3873     fi
3874
3875     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3876     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3877     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3878     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3879     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3880     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3881
3882     [ $target_os = linux ] || [ $target_os = android ] ||
3883         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3884             $ARCH_EXT_LIST_ARM
3885
3886     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3887
3888     check_as <<EOF && enable as_dn_directive
3889 ra .dn d0.i16
3890 .unreq ra
3891 EOF
3892
3893     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3894
3895 elif enabled mips; then
3896
3897     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3898
3899 elif enabled parisc; then
3900
3901     if enabled gcc; then
3902         case $($cc -dumpversion) in
3903             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3904         esac
3905     fi
3906
3907 elif enabled ppc; then
3908
3909     enable local_aligned_8 local_aligned_16
3910
3911     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3912     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3913     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3914     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3915
3916     # AltiVec flags: The FSF version of GCC differs from the Apple version
3917     if enabled altivec; then
3918         check_cflags -maltivec -mabi=altivec &&
3919         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3920         check_cflags -faltivec
3921
3922         # check if our compiler supports Motorola AltiVec C API
3923         check_cc <<EOF || disable altivec
3924 $inc_altivec_h
3925 int main(void) {
3926     vector signed int v1 = (vector signed int) { 0 };
3927     vector signed int v2 = (vector signed int) { 1 };
3928     v1 = vec_add(v1, v2);
3929     return 0;
3930 }
3931 EOF
3932
3933         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3934     fi
3935
3936 elif enabled x86; then
3937
3938     check_builtin rdtsc    intrin.h   "__rdtsc()"
3939     check_builtin mm_empty mmintrin.h "_mm_empty()"
3940
3941     enable local_aligned_8 local_aligned_16
3942
3943     # check whether EBP is available on x86
3944     # As 'i' is stored on the stack, this program will crash
3945     # if the base pointer is used to access it because the
3946     # base pointer is cleared in the inline assembly code.
3947     check_exec_crash <<EOF && enable ebp_available
3948 volatile int i=0;
3949 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3950 return i;
3951 EOF
3952
3953     # check whether EBX is available on x86
3954     check_inline_asm ebx_available '""::"b"(0)' &&
3955         check_inline_asm ebx_available '"":::"%ebx"'
3956
3957     # check whether xmm clobbers are supported
3958     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3959
3960     # check whether binutils is new enough to compile SSSE3/MMXEXT
3961     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3962     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3963
3964     if ! disabled_any asm mmx yasm; then
3965         if check_cmd $yasmexe --version; then
3966             enabled x86_64 && yasm_extra="-m amd64"
3967             yasm_debug="-g dwarf2"
3968         elif check_cmd nasm -v; then
3969             yasmexe=nasm
3970             yasm_debug="-g -F dwarf"
3971             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3972         fi
3973
3974         YASMFLAGS="-f $objformat $yasm_extra"
3975         enabled pic               && append YASMFLAGS "-DPIC"
3976         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3977         case "$objformat" in
3978             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3979         esac
3980
3981         check_yasm "movbe ecx, [5]" && enable yasm ||
3982             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3983         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
3984         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
3985         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3986         check_yasm "CPU amdnop" || disable cpunop
3987     fi
3988
3989     case "$cpu" in
3990         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3991             disable fast_clz
3992         ;;
3993     esac
3994
3995 fi
3996
3997 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
3998
3999 check_ldflags -Wl,--as-needed
4000
4001 if check_func dlopen; then
4002     ldl=
4003 elif check_func dlopen -ldl; then
4004     ldl=-ldl
4005 fi
4006
4007 if ! disabled network; then
4008     check_func getaddrinfo $network_extralibs
4009     check_func getservbyport $network_extralibs
4010     check_func inet_aton $network_extralibs
4011
4012     check_type netdb.h "struct addrinfo"
4013     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4014     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4015     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4016     check_type poll.h "struct pollfd"
4017     check_type netinet/sctp.h "struct sctp_event_subscribe"
4018     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4019     check_type netinet/in.h "struct sockaddr_in6"
4020     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4021     check_type "sys/types.h sys/socket.h" socklen_t
4022
4023     # Prefer arpa/inet.h over winsock2
4024     if check_header arpa/inet.h ; then
4025         check_func closesocket
4026     elif check_header winsock2.h ; then
4027         check_func_headers winsock2.h closesocket -lws2 &&
4028             network_extralibs="-lws2" ||
4029         { check_func_headers winsock2.h closesocket -lws2_32 &&
4030             network_extralibs="-lws2_32"; } || disable winsock2_h network
4031         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4032
4033         check_type ws2tcpip.h socklen_t
4034         check_type ws2tcpip.h "struct addrinfo"
4035         check_type ws2tcpip.h "struct group_source_req"
4036         check_type ws2tcpip.h "struct ip_mreq_source"
4037         check_type ws2tcpip.h "struct ipv6_mreq"
4038         check_type winsock2.h "struct pollfd"
4039         check_struct winsock2.h "struct sockaddr" sa_len
4040         check_type ws2tcpip.h "struct sockaddr_in6"
4041         check_type ws2tcpip.h "struct sockaddr_storage"
4042     else
4043         disable network
4044     fi
4045 fi
4046
4047 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4048 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4049 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4050 check_builtin sync_val_compare_and_swap "" "int *