vdpau: revector macro to reduce line span
[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-libxcb          enable X11 grabbing using XCB [no]
214   --enable-libxcb-shm      enable X11 grabbing shm communication [auto]
215   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [auto]
216   --enable-libxvid         enable Xvid encoding via xvidcore,
217                            native MPEG-4/Xvid encoder exists [no]
218   --enable-openssl         enable openssl [no]
219   --enable-x11grab         enable X11 grabbing (legacy) [no]
220   --enable-zlib            enable zlib [autodetect]
221
222 Toolchain options:
223   --arch=ARCH              select architecture [$arch]
224   --cpu=CPU                select the minimum required CPU (affects
225                            instruction selection, may crash on older CPUs)
226   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
227   --enable-cross-compile   assume a cross-compiler is used
228   --sysroot=PATH           root of cross-build tree
229   --sysinclude=PATH        location of cross-build system headers
230   --target-os=OS           compiler targets OS [$target_os]
231   --target-exec=CMD        command to run executables on target
232   --target-path=DIR        path to view of build directory on target
233   --target-samples=DIR     path to samples directory on target
234   --toolchain=NAME         set tool defaults according to NAME
235   --nm=NM                  use nm tool
236   --ar=AR                  use archive tool AR [$ar_default]
237   --as=AS                  use assembler AS [$as_default]
238   --cc=CC                  use C compiler CC [$cc_default]
239   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
240   --ld=LD                  use linker LD
241   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
242   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
243   --host-cc=HOSTCC         use host C compiler HOSTCC
244   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
245   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
246   --host-ld=HOSTLD         use host linker HOSTLD
247   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
248   --host-libs=HLIBS        use libs HLIBS when linking for host
249   --host-os=OS             compiler host OS [$target_os]
250   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
251   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
252   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
253   --extra-libs=ELIBS       add ELIBS [$ELIBS]
254   --extra-version=STRING   version string suffix []
255   --optflags=OPTFLAGS      override optimization-related compiler flags
256   --build-suffix=SUFFIX    library name suffix []
257   --enable-pic             build position-independent code
258   --enable-thumb           compile for Thumb instruction set
259   --enable-lto             use link-time optimization
260
261 Advanced options (experts only):
262   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
263   --disable-symver         disable symbol versioning
264   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
265   --disable-safe-bitstream-reader
266                            disable buffer boundary checking in bitreaders
267                            (faster, but may crash)
268   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
269   --enable-sram            allow use of on-chip SRAM
270
271 Optimization options (experts only):
272   --disable-asm            disable all assembly optimizations
273   --disable-altivec        disable AltiVec optimizations
274   --disable-amd3dnow       disable 3DNow! optimizations
275   --disable-amd3dnowext    disable 3DNow! extended optimizations
276   --disable-mmx            disable MMX optimizations
277   --disable-mmxext         disable MMXEXT optimizations
278   --disable-sse            disable SSE optimizations
279   --disable-sse2           disable SSE2 optimizations
280   --disable-sse3           disable SSE3 optimizations
281   --disable-ssse3          disable SSSE3 optimizations
282   --disable-sse4           disable SSE4 optimizations
283   --disable-sse42          disable SSE4.2 optimizations
284   --disable-avx            disable AVX optimizations
285   --disable-xop            disable XOP optimizations
286   --disable-fma3           disable FMA3 optimizations
287   --disable-fma4           disable FMA4 optimizations
288   --disable-avx2           disable AVX2 optimizations
289   --disable-armv5te        disable armv5te optimizations
290   --disable-armv6          disable armv6 optimizations
291   --disable-armv6t2        disable armv6t2 optimizations
292   --disable-vfp            disable VFP optimizations
293   --disable-neon           disable NEON optimizations
294   --disable-inline-asm     disable use of inline assembly
295   --disable-yasm           disable use of nasm/yasm assembly
296
297 Developer options (useful when working on Libav itself):
298   --disable-debug          disable debugging symbols
299   --enable-debug=LEVEL     set the debug level [$debuglevel]
300   --disable-optimizations  disable compiler optimizations
301   --enable-extra-warnings  enable more compiler warnings
302   --samples=PATH           location of test samples for FATE, if not set use
303                            \$LIBAV_SAMPLES at make invocation time.
304   --enable-neon-clobber-test check NEON registers for clobbering (should be
305                            used only for debugging purposes)
306   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
307                            should be used only for debugging purposes)
308   --enable-random          randomly enable/disable components
309   --disable-random
310   --enable-random=LIST     randomly enable/disable specific components or
311   --disable-random=LIST    component groups. LIST is a comma-separated list
312                            of NAME[:PROB] entries where NAME is a component
313                            (group) and PROB the probability associated with
314                            NAME (default 0.5).
315   --random-seed=VALUE      seed value for --enable/disable-random
316
317 NOTE: Object files are built at the place where configure is launched.
318 EOF
319   exit 0
320 }
321
322 quotes='""'
323
324 log(){
325     echo "$@" >> $logfile
326 }
327
328 log_file(){
329     log BEGIN $1
330     pr -n -t $1 >> $logfile
331     log END $1
332 }
333
334 echolog(){
335     log "$@"
336     echo "$@"
337 }
338
339 warn(){
340     log "WARNING: $*"
341     WARNINGS="${WARNINGS}WARNING: $*\n"
342 }
343
344 die(){
345     echolog "$@"
346     cat <<EOF
347
348 If you think configure made a mistake, make sure you are using the latest
349 version from Git.  If the latest version fails, report the problem to the
350 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
351 EOF
352     if disabled logging; then
353         cat <<EOF
354 Rerun configure with logging enabled (do not use --disable-logging), and
355 include the log this produces with your report.
356 EOF
357     else
358         cat <<EOF
359 Include the log file "$logfile" produced by configure as this will help
360 solving the problem.
361 EOF
362     fi
363     exit 1
364 }
365
366 # Avoid locale weirdness, besides we really just want to translate ASCII.
367 toupper(){
368     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
369 }
370
371 tolower(){
372     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
373 }
374
375 c_escape(){
376     echo "$*" | sed 's/["\\]/\\\0/g'
377 }
378
379 sh_quote(){
380     v=$(echo "$1" | sed "s/'/'\\\\''/g")
381     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
382     echo "$v"
383 }
384
385 cleanws(){
386     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
387 }
388
389 filter(){
390     pat=$1
391     shift
392     for v; do
393         eval "case $v in $pat) echo $v ;; esac"
394     done
395 }
396
397 filter_out(){
398     pat=$1
399     shift
400     for v; do
401         eval "case $v in $pat) ;; *) echo $v ;; esac"
402     done
403 }
404
405 map(){
406     m=$1
407     shift
408     for v; do eval $m; done
409 }
410
411 add_suffix(){
412     suffix=$1
413     shift
414     for v; do echo ${v}${suffix}; done
415 }
416
417 set_all(){
418     value=$1
419     shift
420     for var in $*; do
421         eval $var=$value
422     done
423 }
424
425 set_weak(){
426     value=$1
427     shift
428     for var; do
429         eval : \${$var:=$value}
430     done
431 }
432
433 sanitize_var_name(){
434     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
435 }
436
437 set_safe(){
438     var=$1
439     shift
440     eval $(sanitize_var_name "$var")='$*'
441 }
442
443 get_safe(){
444     eval echo \$$(sanitize_var_name "$1")
445 }
446
447 pushvar(){
448     for pvar in $*; do
449         eval level=\${${pvar}_level:=0}
450         eval ${pvar}_${level}="\$$pvar"
451         eval ${pvar}_level=$(($level+1))
452     done
453 }
454
455 popvar(){
456     for pvar in $*; do
457         eval level=\${${pvar}_level:-0}
458         test $level = 0 && continue
459         eval level=$(($level-1))
460         eval $pvar="\${${pvar}_${level}}"
461         eval ${pvar}_level=$level
462         eval unset ${pvar}_${level}
463     done
464 }
465
466 enable(){
467     set_all yes $*
468 }
469
470 disable(){
471     set_all no $*
472 }
473
474 enable_weak(){
475     set_weak yes $*
476 }
477
478 disable_weak(){
479     set_weak no $*
480 }
481
482 enable_safe(){
483     for var; do
484         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
485     done
486 }
487
488 disable_safe(){
489     for var; do
490         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
491     done
492 }
493
494 do_enable_deep(){
495     for var; do
496         enabled $var && continue
497         eval sel="\$${var}_select"
498         eval sgs="\$${var}_suggest"
499         pushvar var sgs
500         enable_deep $sel
501         popvar sgs
502         enable_deep_weak $sgs
503         popvar var
504     done
505 }
506
507 enable_deep(){
508     do_enable_deep $*
509     enable $*
510 }
511
512 enable_deep_weak(){
513     for var; do
514         disabled $var && continue
515         pushvar var
516         do_enable_deep $var
517         popvar var
518         enable_weak $var
519     done
520 }
521
522 enabled(){
523     test "${1#!}" = "$1" && op== || op=!=
524     eval test "x\$${1#!}" $op "xyes"
525 }
526
527 disabled(){
528     test "${1#!}" = "$1" && op== || op=!=
529     eval test "x\$${1#!}" $op "xno"
530 }
531
532 enabled_all(){
533     for opt; do
534         enabled $opt || return 1
535     done
536 }
537
538 disabled_all(){
539     for opt; do
540         disabled $opt || return 1
541     done
542 }
543
544 enabled_any(){
545     for opt; do
546         enabled $opt && return 0
547     done
548 }
549
550 disabled_any(){
551     for opt; do
552         disabled $opt && return 0
553     done
554     return 1
555 }
556
557 set_default(){
558     for opt; do
559         eval : \${$opt:=\$${opt}_default}
560     done
561 }
562
563 is_in(){
564     value=$1
565     shift
566     for var in $*; do
567         [ $var = $value ] && return 0
568     done
569     return 1
570 }
571
572 do_check_deps(){
573     for cfg; do
574         cfg="${cfg#!}"
575         enabled ${cfg}_checking && die "Circular dependency for $cfg."
576         disabled ${cfg}_checking && continue
577         enable ${cfg}_checking
578         append allopts $cfg
579
580         eval dep_all="\$${cfg}_deps"
581         eval dep_any="\$${cfg}_deps_any"
582         eval dep_sel="\$${cfg}_select"
583         eval dep_sgs="\$${cfg}_suggest"
584         eval dep_ifa="\$${cfg}_if"
585         eval dep_ifn="\$${cfg}_if_any"
586
587         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
588         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
589         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
590
591         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
592         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
593         enabled_all  $dep_all || disable $cfg
594         enabled_any  $dep_any || disable $cfg
595         disabled_any $dep_sel && disable $cfg
596
597         if enabled $cfg; then
598             enable_deep $dep_sel
599             enable_deep_weak $dep_sgs
600         fi
601
602         disable ${cfg}_checking
603     done
604 }
605
606 check_deps(){
607     unset allopts
608
609     do_check_deps "$@"
610
611     for cfg in $allopts; do
612         enabled $cfg || continue
613         eval dep_extralibs="\$${cfg}_extralibs"
614         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
615     done
616 }
617
618 print_config(){
619     pfx=$1
620     files=$2
621     shift 2
622     map 'eval echo "$v \${$v:-no}"' "$@" |
623     awk "BEGIN { split(\"$files\", files) }
624         {
625             c = \"$pfx\" toupper(\$1);
626             v = \$2;
627             sub(/yes/, 1, v);
628             sub(/no/,  0, v);
629             for (f in files) {
630                 file = files[f];
631                 if (file ~ /\\.h\$/) {
632                     printf(\"#define %s %d\\n\", c, v) >>file;
633                 } else if (file ~ /\\.asm\$/) {
634                     printf(\"%%define %s %d\\n\", c, v) >>file;
635                 } else if (file ~ /\\.mak\$/) {
636                     n = -v ? \"\" : \"!\";
637                     printf(\"%s%s=yes\\n\", n, c) >>file;
638                 }
639             }
640         }"
641 }
642
643 print_enabled(){
644     suf=$1
645     shift
646     for v; do
647         enabled $v && printf "%s\n" ${v%$suf};
648     done
649 }
650
651 append(){
652     var=$1
653     shift
654     eval "$var=\"\$$var $*\""
655 }
656
657 prepend(){
658     var=$1
659     shift
660     eval "$var=\"$* \$$var\""
661 }
662
663 unique(){
664     var=$1
665     uniq_list=""
666     for tok in $(eval echo \$$var); do
667         uniq_list="$(filter_out $tok $uniq_list) $tok"
668     done
669     eval "$var=\"${uniq_list}\""
670 }
671
672 add_cppflags(){
673     append CPPFLAGS "$@"
674 }
675
676 add_cflags(){
677     append CFLAGS $($cflags_filter "$@")
678 }
679
680 add_asflags(){
681     append ASFLAGS $($asflags_filter "$@")
682 }
683
684 add_ldflags(){
685     append LDFLAGS $($ldflags_filter "$@")
686 }
687
688 add_ldexeflags(){
689     append LDEXEFLAGS $($ldflags_filter "$@")
690 }
691
692 add_stripflags(){
693     append STRIPFLAGS "$@"
694 }
695
696 add_extralibs(){
697     prepend extralibs $($ldflags_filter "$@")
698 }
699
700 add_host_cppflags(){
701     append host_cppflags "$@"
702 }
703
704 add_host_cflags(){
705     append host_cflags $($host_cflags_filter "$@")
706 }
707
708 add_host_ldflags(){
709     append host_ldflags $($host_ldflags_filter "$@")
710 }
711
712 add_compat(){
713     append compat_objs $1
714     shift
715     map 'add_cppflags -D$v' "$@"
716 }
717
718 check_cmd(){
719     log "$@"
720     "$@" >> $logfile 2>&1
721 }
722
723 cc_o(){
724     eval printf '%s\\n' $CC_O
725 }
726
727 cc_e(){
728     eval printf '%s\\n' $CC_E
729 }
730
731 check_cc(){
732     log check_cc "$@"
733     cat > $TMPC
734     log_file $TMPC
735     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
736 }
737
738 check_cpp(){
739     log check_cpp "$@"
740     cat > $TMPC
741     log_file $TMPC
742     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
743 }
744
745 as_o(){
746     eval printf '%s\\n' $AS_O
747 }
748
749 check_as(){
750     log check_as "$@"
751     cat > $TMPS
752     log_file $TMPS
753     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
754 }
755
756 check_inline_asm(){
757     log check_inline_asm "$@"
758     name="$1"
759     code="$2"
760     shift 2
761     disable $name
762     check_cc "$@" <<EOF && enable $name
763 void foo(void){ __asm__ volatile($code); }
764 EOF
765 }
766
767 check_insn(){
768     log check_insn "$@"
769     check_inline_asm ${1}_inline "\"$2\""
770     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
771 }
772
773 check_yasm(){
774     log check_yasm "$@"
775     echo "$1" > $TMPS
776     log_file $TMPS
777     shift 1
778     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
779 }
780
781 ld_o(){
782     eval printf '%s\\n' $LD_O
783 }
784
785 check_ld(){
786     log check_ld "$@"
787     flags=$(filter_out '-l*' "$@")
788     libs=$(filter '-l*' "$@")
789     check_cc $($cflags_filter $flags) || return
790     flags=$($ldflags_filter $flags)
791     libs=$($ldflags_filter $libs)
792     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
793 }
794
795 print_include(){
796     hdr=$1
797     test "${hdr%.h}" = "${hdr}" &&
798         echo "#include $hdr"    ||
799         echo "#include <$hdr>"
800 }
801
802 check_code(){
803     log check_code "$@"
804     check=$1
805     headers=$2
806     code=$3
807     shift 3
808     {
809         for hdr in $headers; do
810             print_include $hdr
811         done
812         echo "int main(void) { $code; return 0; }"
813     } | check_$check "$@"
814 }
815
816 check_cppflags(){
817     log check_cppflags "$@"
818     check_cc "$@" <<EOF && append CPPFLAGS "$@"
819 int x;
820 EOF
821 }
822
823 test_cflags(){
824     log test_cflags "$@"
825     set -- $($cflags_filter "$@")
826     check_cc "$@" <<EOF
827 int x;
828 EOF
829 }
830
831 check_cflags(){
832     log check_cflags "$@"
833     test_cflags "$@" && add_cflags "$@"
834 }
835
836 test_ldflags(){
837     log test_ldflags "$@"
838     check_ld "$@" <<EOF
839 int main(void){ return 0; }
840 EOF
841 }
842
843 check_ldflags(){
844     log check_ldflags "$@"
845     test_ldflags "$@" && add_ldflags "$@"
846 }
847
848 test_stripflags(){
849     log test_stripflags "$@"
850     # call check_cc to get a fresh TMPO
851     check_cc <<EOF
852 int main(void) { return 0; }
853 EOF
854     check_cmd $strip $STRIPFLAGS "$@" $TMPO
855 }
856
857 check_stripflags(){
858     log check_stripflags "$@"
859     test_stripflags "$@" && add_stripflags "$@"
860 }
861
862 check_header(){
863     log check_header "$@"
864     header=$1
865     shift
866     disable_safe $header
867     check_cpp "$@" <<EOF && enable_safe $header
868 #include <$header>
869 int x;
870 EOF
871 }
872
873 check_func(){
874     log check_func "$@"
875     func=$1
876     shift
877     disable $func
878     check_ld "$@" <<EOF && enable $func
879 extern int $func();
880 int main(void){ $func(); }
881 EOF
882 }
883
884 check_mathfunc(){
885     log check_mathfunc "$@"
886     func=$1
887     narg=$2
888     shift 2
889     test $narg = 2 && args="f, g" || args="f"
890     disable $func
891     check_ld "$@" <<EOF && enable $func
892 #include <math.h>
893 float foo(float f, float g) { return $func($args); }
894 int main(void){ return 0; }
895 EOF
896 }
897
898 check_func_headers(){
899     log check_func_headers "$@"
900     headers=$1
901     funcs=$2
902     shift 2
903     {
904         for hdr in $headers; do
905             print_include $hdr
906         done
907         for func in $funcs; do
908             echo "long check_$func(void) { return (long) $func; }"
909         done
910         echo "int main(void) { return 0; }"
911     } | check_ld "$@" && enable $funcs && enable_safe $headers
912 }
913
914 check_cpp_condition(){
915     log check_cpp_condition "$@"
916     header=$1
917     condition=$2
918     shift 2
919     check_cpp "$@" <<EOF
920 #include <$header>
921 #if !($condition)
922 #error "unsatisfied condition: $condition"
923 #endif
924 EOF
925 }
926
927 check_lib(){
928     log check_lib "$@"
929     header="$1"
930     func="$2"
931     shift 2
932     check_header $header && check_func $func "$@" && add_extralibs "$@"
933 }
934
935 check_lib2(){
936     log check_lib2 "$@"
937     headers="$1"
938     funcs="$2"
939     shift 2
940     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
941 }
942
943 check_pkg_config(){
944     log check_pkg_config "$@"
945     pkg="$1"
946     headers="$2"
947     funcs="$3"
948     shift 3
949     check_cmd $pkg_config --exists --print-errors $pkg || return
950     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
951     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
952     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
953         set_safe ${pkg}_cflags $pkg_cflags   &&
954         set_safe ${pkg}_libs   $pkg_libs
955 }
956
957 check_exec(){
958     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
959 }
960
961 check_exec_crash(){
962     code=$(cat)
963
964     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
965     # are safe but may not be available everywhere.  Thus we use
966     # raise(SIGTERM) instead.  The check is run in a subshell so we
967     # can redirect the "Terminated" message from the shell.  SIGBUS
968     # is not defined by standard C so it is used conditionally.
969
970     (check_exec "$@") >> $logfile 2>&1 <<EOF
971 #include <signal.h>
972 static void sighandler(int sig){
973     raise(SIGTERM);
974 }
975 int foo(void){
976     $code
977 }
978 int (*func_ptr)(void) = foo;
979 int main(void){
980     signal(SIGILL, sighandler);
981     signal(SIGFPE, sighandler);
982     signal(SIGSEGV, sighandler);
983 #ifdef SIGBUS
984     signal(SIGBUS, sighandler);
985 #endif
986     return func_ptr();
987 }
988 EOF
989 }
990
991 check_type(){
992     log check_type "$@"
993     headers=$1
994     type=$2
995     shift 2
996     disable_safe "$type"
997     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
998 }
999
1000 check_struct(){
1001     log check_struct "$@"
1002     headers=$1
1003     struct=$2
1004     member=$3
1005     shift 3
1006     disable_safe "${struct}_${member}"
1007     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1008         enable_safe "${struct}_${member}"
1009 }
1010
1011 check_builtin(){
1012     log check_builtin "$@"
1013     name=$1
1014     headers=$2
1015     builtin=$3
1016     shift 3
1017     disable "$name"
1018     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1019 }
1020
1021 check_compile_assert(){
1022     log check_compile_assert "$@"
1023     name=$1
1024     headers=$2
1025     condition=$3
1026     shift 3
1027     disable "$name"
1028     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1029 }
1030
1031 require(){
1032     name="$1"
1033     header="$2"
1034     func="$3"
1035     shift 3
1036     check_lib $header $func "$@" || die "ERROR: $name not found"
1037 }
1038
1039 require2(){
1040     name="$1"
1041     headers="$2"
1042     func="$3"
1043     shift 3
1044     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1045 }
1046
1047 require_pkg_config(){
1048     pkg="$1"
1049     check_pkg_config "$@" || die "ERROR: $pkg not found"
1050     add_cflags    $(get_safe ${pkg}_cflags)
1051     add_extralibs $(get_safe ${pkg}_libs)
1052 }
1053
1054 hostcc_e(){
1055     eval printf '%s\\n' $HOSTCC_E
1056 }
1057
1058 hostcc_o(){
1059     eval printf '%s\\n' $HOSTCC_O
1060 }
1061
1062 check_host_cc(){
1063     log check_host_cc "$@"
1064     cat > $TMPC
1065     log_file $TMPC
1066     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1067 }
1068
1069 check_host_cpp(){
1070     log check_host_cpp "$@"
1071     cat > $TMPC
1072     log_file $TMPC
1073     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1074 }
1075
1076 check_host_cppflags(){
1077     log check_host_cppflags "$@"
1078     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1079 int x;
1080 EOF
1081 }
1082
1083 check_host_cflags(){
1084     log check_host_cflags "$@"
1085     set -- $($host_cflags_filter "$@")
1086     check_host_cc "$@" <<EOF && append host_cflags "$@"
1087 int x;
1088 EOF
1089 }
1090
1091 check_host_cpp_condition(){
1092     log check_host_cpp_condition "$@"
1093     header=$1
1094     condition=$2
1095     shift 2
1096     check_host_cpp "$@" <<EOF
1097 #include <$header>
1098 #if !($condition)
1099 #error "unsatisfied condition: $condition"
1100 #endif
1101 EOF
1102 }
1103
1104 apply(){
1105     file=$1
1106     shift
1107     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1108 }
1109
1110 cp_if_changed(){
1111     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1112     mkdir -p "$(dirname $2)"
1113     $cp_f "$1" "$2"
1114 }
1115
1116 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1117 # system-dependent things.
1118
1119 COMPONENT_LIST="
1120     bsfs
1121     decoders
1122     demuxers
1123     encoders
1124     filters
1125     hwaccels
1126     indevs
1127     muxers
1128     outdevs
1129     parsers
1130     protocols
1131 "
1132
1133 EXAMPLE_LIST="
1134     avcodec_example
1135     filter_audio_example
1136     metadata_example
1137     output_example
1138     transcode_aac_example
1139 "
1140
1141 EXTERNAL_LIBRARY_LIST="
1142     avisynth
1143     bzlib
1144     frei0r
1145     gnutls
1146     libbs2b
1147     libcdio
1148     libdc1394
1149     libfaac
1150     libfdk_aac
1151     libfontconfig
1152     libfreetype
1153     libgsm
1154     libilbc
1155     libmp3lame
1156     libopencore_amrnb
1157     libopencore_amrwb
1158     libopencv
1159     libopenjpeg
1160     libopus
1161     libpulse
1162     librtmp
1163     libschroedinger
1164     libspeex
1165     libtheora
1166     libtwolame
1167     libvo_aacenc
1168     libvo_amrwbenc
1169     libvorbis
1170     libvpx
1171     libwavpack
1172     libwebp
1173     libx264
1174     libx265
1175     libxavs
1176     libxcb
1177     libxcb_shm
1178     libxcb_xfixes
1179     libxvid
1180     openssl
1181     x11grab
1182     zlib
1183 "
1184
1185 FEATURE_LIST="
1186     gray
1187     hardcoded_tables
1188     runtime_cpudetect
1189     safe_bitstream_reader
1190     shared
1191     small
1192     sram
1193     static
1194     swscale_alpha
1195 "
1196
1197 HWACCEL_LIST="
1198     dxva2
1199     vaapi
1200     vda
1201     vdpau
1202 "
1203
1204 LIBRARY_LIST="
1205     avcodec
1206     avdevice
1207     avfilter
1208     avformat
1209     avresample
1210     avutil
1211     swscale
1212 "
1213
1214 LICENSE_LIST="
1215     gpl
1216     nonfree
1217     version3
1218 "
1219
1220 PROGRAM_LIST="
1221     avconv
1222     avplay
1223     avprobe
1224 "
1225
1226 SUBSYSTEM_LIST="
1227     dct
1228     doc
1229     error_resilience
1230     faan
1231     fft
1232     lsp
1233     lzo
1234     mdct
1235     network
1236     rdft
1237 "
1238
1239 CONFIG_LIST="
1240     $COMPONENT_LIST
1241     $EXAMPLE_LIST
1242     $EXTERNAL_LIBRARY_LIST
1243     $FEATURE_LIST
1244     $HWACCEL_LIST
1245     $LICENSE_LIST
1246     $LIBRARY_LIST
1247     $PROGRAM_LIST
1248     $SUBSYSTEM_LIST
1249     memalign_hack
1250     neon_clobber_test
1251     pic
1252     pod2man
1253     texi2html
1254     thumb
1255     xmm_clobber_test
1256 "
1257
1258 THREADS_LIST="
1259     pthreads
1260     w32threads
1261 "
1262
1263 ATOMICS_LIST="
1264     atomics_gcc
1265     atomics_suncc
1266     atomics_win32
1267 "
1268
1269 ARCH_LIST="
1270     aarch64
1271     alpha
1272     arm
1273     avr32
1274     avr32_ap
1275     avr32_uc
1276     bfin
1277     ia64
1278     m68k
1279     mips
1280     mips64
1281     parisc
1282     ppc
1283     ppc64
1284     s390
1285     sh4
1286     sparc
1287     sparc64
1288     tilegx
1289     tilepro
1290     tomi
1291     x86
1292     x86_32
1293     x86_64
1294 "
1295
1296 ARCH_EXT_LIST_ARM="
1297     armv5te
1298     armv6
1299     armv6t2
1300     armv8
1301     neon
1302     vfp
1303     vfpv3
1304 "
1305
1306 ARCH_EXT_LIST_X86_SIMD="
1307     amd3dnow
1308     amd3dnowext
1309     avx
1310     avx2
1311     fma3
1312     fma4
1313     mmx
1314     mmxext
1315     sse
1316     sse2
1317     sse3
1318     sse4
1319     sse42
1320     ssse3
1321     xop
1322 "
1323
1324 ARCH_EXT_LIST_PPC="
1325     altivec
1326     dcbzl
1327     ldbrx
1328     ppc4xx
1329 "
1330
1331 ARCH_EXT_LIST_X86="
1332     $ARCH_EXT_LIST_X86_SIMD
1333     cpunop
1334     i686
1335 "
1336
1337 ARCH_EXT_LIST="
1338     $ARCH_EXT_LIST_ARM
1339     $ARCH_EXT_LIST_PPC
1340     $ARCH_EXT_LIST_X86
1341     loongson
1342     vis
1343 "
1344
1345 ARCH_FEATURES="
1346     aligned_stack
1347     fast_64bit
1348     fast_clz
1349     fast_cmov
1350     local_aligned_8
1351     local_aligned_16
1352     simd_align_16
1353 "
1354
1355 BUILTIN_LIST="
1356     atomic_cas_ptr
1357     machine_rw_barrier
1358     MemoryBarrier
1359     mm_empty
1360     rdtsc
1361     sync_val_compare_and_swap
1362 "
1363 HAVE_LIST_CMDLINE="
1364     inline_asm
1365     symver
1366     yasm
1367 "
1368
1369 HAVE_LIST_PUB="
1370     bigendian
1371     fast_unaligned
1372 "
1373
1374 HEADERS_LIST="
1375     alsa_asoundlib_h
1376     altivec_h
1377     arpa_inet_h
1378     cdio_paranoia_h
1379     cdio_paranoia_paranoia_h
1380     dev_bktr_ioctl_bt848_h
1381     dev_bktr_ioctl_meteor_h
1382     dev_ic_bt8xx_h
1383     dev_video_bktr_ioctl_bt848_h
1384     dev_video_meteor_ioctl_meteor_h
1385     direct_h
1386     dlfcn_h
1387     dxva_h
1388     gsm_h
1389     io_h
1390     mach_mach_time_h
1391     machine_ioctl_bt848_h
1392     machine_ioctl_meteor_h
1393     malloc_h
1394     poll_h
1395     sndio_h
1396     soundcard_h
1397     sys_mman_h
1398     sys_param_h
1399     sys_resource_h
1400     sys_select_h
1401     sys_soundcard_h
1402     sys_time_h
1403     sys_un_h
1404     sys_videoio_h
1405     unistd_h
1406     windows_h
1407     winsock2_h
1408 "
1409
1410 INTRINSICS_LIST="
1411     intrinsics_neon
1412 "
1413
1414 MATH_FUNCS="
1415     atanf
1416     atan2f
1417     cbrtf
1418     cosf
1419     exp2
1420     exp2f
1421     expf
1422     isinf
1423     isnan
1424     ldexpf
1425     llrint
1426     llrintf
1427     log2
1428     log2f
1429     log10f
1430     lrint
1431     lrintf
1432     powf
1433     rint
1434     round
1435     roundf
1436     sinf
1437     trunc
1438     truncf
1439 "
1440
1441 SYSTEM_FUNCS="
1442     aligned_malloc
1443     clock_gettime
1444     closesocket
1445     CommandLineToArgvW
1446     CoTaskMemFree
1447     CryptGenRandom
1448     dlopen
1449     fcntl
1450     flt_lim
1451     fork
1452     getaddrinfo
1453     gethrtime
1454     getopt
1455     GetProcessAffinityMask
1456     GetProcessMemoryInfo
1457     GetProcessTimes
1458     getrusage
1459     getservbyport
1460     GetSystemTimeAsFileTime
1461     gettimeofday
1462     gmtime_r
1463     inet_aton
1464     isatty
1465     jack_port_get_latency_range
1466     localtime_r
1467     mach_absolute_time
1468     MapViewOfFile
1469     MoveFileExA
1470     memalign
1471     mkstemp
1472     mmap
1473     mprotect
1474     nanosleep
1475     posix_memalign
1476     sched_getaffinity
1477     SetConsoleTextAttribute
1478     setmode
1479     setrlimit
1480     Sleep
1481     strerror_r
1482     strptime
1483     sysconf
1484     sysctl
1485     usleep
1486     VirtualAlloc
1487 "
1488
1489 TOOLCHAIN_FEATURES="
1490     as_dn_directive
1491     as_func
1492     asm_mod_q
1493     attribute_may_alias
1494     attribute_packed
1495     ebp_available
1496     ebx_available
1497     gnu_as
1498     ibm_asm
1499     inline_asm_labels
1500     pragma_deprecated
1501     symver_asm_label
1502     symver_gnu_asm
1503     vfp_args
1504     xform_asm
1505     xmm_clobbers
1506 "
1507
1508 TYPES_LIST="
1509     CONDITION_VARIABLE_Ptr
1510     socklen_t
1511     struct_addrinfo
1512     struct_group_source_req
1513     struct_ip_mreq_source
1514     struct_ipv6_mreq
1515     struct_pollfd
1516     struct_rusage_ru_maxrss
1517     struct_sockaddr_in6
1518     struct_sockaddr_sa_len
1519     struct_sockaddr_storage
1520     struct_v4l2_frmivalenum_discrete
1521 "
1522
1523 HAVE_LIST="
1524     $ARCH_EXT_LIST
1525     $(add_suffix _external $ARCH_EXT_LIST)
1526     $(add_suffix _inline   $ARCH_EXT_LIST)
1527     $ARCH_FEATURES
1528     $ATOMICS_LIST
1529     $BUILTIN_LIST
1530     $HAVE_LIST_CMDLINE
1531     $HAVE_LIST_PUB
1532     $HEADERS_LIST
1533     $INTRINSICS_LIST
1534     $MATH_FUNCS
1535     $SYSTEM_FUNCS
1536     $THREADS_LIST
1537     $TOOLCHAIN_FEATURES
1538     $TYPES_LIST
1539     atomics_native
1540     dos_paths
1541     dxva2_lib
1542     libc_msvcrt
1543     libdc1394_1
1544     libdc1394_2
1545     sdl
1546     section_data_rel_ro
1547     threads
1548     vdpau_x11
1549     xlib
1550 "
1551
1552 # options emitted with CONFIG_ prefix but not available on the command line
1553 CONFIG_EXTRA="
1554     aandcttables
1555     ac3dsp
1556     audio_frame_queue
1557     audiodsp
1558     blockdsp
1559     bswapdsp
1560     cabac
1561     dvprofile
1562     faandct
1563     faanidct
1564     fdctdsp
1565     gcrypt
1566     golomb
1567     gplv3
1568     h263dsp
1569     h264chroma
1570     h264dsp
1571     h264pred
1572     h264qpel
1573     hpeldsp
1574     huffman
1575     huffyuvdsp
1576     huffyuvencdsp
1577     idctdsp
1578     iirfilter
1579     intrax8
1580     lgplv3
1581     lpc
1582     me_cmp
1583     mpeg_er
1584     mpegaudio
1585     mpegaudiodsp
1586     mpegvideo
1587     mpegvideoenc
1588     nettle
1589     pixblockdsp
1590     qpeldsp
1591     rangecoder
1592     riffdec
1593     riffenc
1594     rtpdec
1595     rtpenc_chain
1596     sinewin
1597     startcode
1598     tpeldsp
1599     videodsp
1600     vp3dsp
1601     wma_freqs
1602 "
1603
1604 CMDLINE_SELECT="
1605     $ARCH_EXT_LIST
1606     $CONFIG_LIST
1607     $HAVE_LIST_CMDLINE
1608     $THREADS_LIST
1609     asm
1610     cross_compile
1611     debug
1612     extra_warnings
1613     logging
1614     lto
1615     optimizations
1616     rpath
1617 "
1618
1619 PATHS_LIST="
1620     bindir
1621     datadir
1622     docdir
1623     incdir
1624     libdir
1625     mandir
1626     prefix
1627     shlibdir
1628 "
1629
1630 CMDLINE_SET="
1631     $PATHS_LIST
1632     ar
1633     arch
1634     as
1635     build_suffix
1636     cc
1637     cpu
1638     cross_prefix
1639     dep_cc
1640     extra_version
1641     host_cc
1642     host_cflags
1643     host_ld
1644     host_ldflags
1645     host_libs
1646     host_os
1647     ld
1648     logfile
1649     malloc_prefix
1650     nm
1651     optflags
1652     pkg_config
1653     pkg_config_flags
1654     random_seed
1655     samples
1656     sysinclude
1657     sysroot
1658     target_exec
1659     target_os
1660     target_path
1661     target_samples
1662     toolchain
1663 "
1664
1665 CMDLINE_APPEND="
1666     extra_cflags
1667     host_cppflags
1668 "
1669
1670 # code dependency declarations
1671
1672 # architecture extensions
1673
1674 armv5te_deps="arm"
1675 armv6_deps="arm"
1676 armv6t2_deps="arm"
1677 armv8_deps="aarch64"
1678 neon_deps_any="aarch64 arm"
1679 intrinsics_neon_deps="neon"
1680 vfp_deps_any="aarch64 arm"
1681 vfpv3_deps="vfp"
1682
1683 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1684
1685 altivec_deps="ppc"
1686 ppc4xx_deps="ppc"
1687
1688 cpunop_deps="i686"
1689 x86_64_select="i686"
1690 x86_64_suggest="fast_cmov"
1691
1692 amd3dnow_deps="mmx"
1693 amd3dnowext_deps="amd3dnow"
1694 i686_deps="x86"
1695 mmx_deps="x86"
1696 mmxext_deps="mmx"
1697 sse_deps="mmxext"
1698 sse2_deps="sse"
1699 sse3_deps="sse2"
1700 ssse3_deps="sse3"
1701 sse4_deps="ssse3"
1702 sse42_deps="sse4"
1703 avx_deps="sse42"
1704 xop_deps="avx"
1705 fma3_deps="avx"
1706 fma4_deps="avx"
1707 avx2_deps="avx"
1708
1709 mmx_external_deps="yasm"
1710 mmx_inline_deps="inline_asm"
1711 mmx_suggest="mmx_external mmx_inline"
1712
1713 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1714     eval dep=\$${ext}_deps
1715     eval ${ext}_external_deps='"${dep}_external"'
1716     eval ${ext}_inline_deps='"${dep}_inline"'
1717     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1718 done
1719
1720 aligned_stack_if_any="aarch64 ppc x86"
1721 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1722 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1723 fast_unaligned_if_any="aarch64 ppc x86"
1724 simd_align_16_if_any="altivec neon sse"
1725
1726 # system capabilities
1727 log2_deps="!libc_msvcrt"
1728
1729 symver_if_any="symver_asm_label symver_gnu_asm"
1730
1731 # threading support
1732 atomics_gcc_if="sync_val_compare_and_swap"
1733 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1734 atomics_win32_if="MemoryBarrier"
1735 atomics_native_if_any="$ATOMICS_LIST"
1736 w32threads_deps="atomics_native"
1737 threads_if_any="$THREADS_LIST"
1738
1739 # subsystems
1740 dct_select="rdft"
1741 error_resilience_select="me_cmp"
1742 faandct_deps="faan fdctdsp"
1743 faanidct_deps="faan idctdsp"
1744 intrax8_select="error_resilience"
1745 mdct_select="fft"
1746 rdft_select="fft"
1747 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1748 mpeg_er_select="error_resilience"
1749 mpegaudio_select="mpegaudiodsp"
1750 mpegaudiodsp_select="dct"
1751 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp videodsp"
1752 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1753
1754 # decoders / encoders
1755 aac_decoder_select="mdct sinewin"
1756 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1757 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1758 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
1759 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1760 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1761 aic_decoder_select="golomb idctdsp"
1762 alac_encoder_select="lpc"
1763 als_decoder_select="bswapdsp"
1764 amrnb_decoder_select="lsp"
1765 amrwb_decoder_select="lsp"
1766 amv_decoder_select="sp5x_decoder"
1767 ape_decoder_select="bswapdsp"
1768 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1769 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1770 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1771 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1772 atrac1_decoder_select="mdct sinewin"
1773 atrac3_decoder_select="mdct"
1774 atrac3p_decoder_select="mdct sinewin"
1775 bink_decoder_select="blockdsp hpeldsp"
1776 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1777 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1778 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1779 cllc_decoder_select="bswapdsp"
1780 comfortnoise_encoder_select="lpc"
1781 cook_decoder_select="audiodsp mdct sinewin"
1782 cscd_decoder_select="lzo"
1783 cscd_decoder_suggest="zlib"
1784 dca_decoder_select="mdct"
1785 dnxhd_decoder_select="blockdsp idctdsp"
1786 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1787 dvvideo_decoder_select="dvprofile idctdsp"
1788 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1789 dxa_decoder_deps="zlib"
1790 eac3_decoder_select="ac3_decoder"
1791 eac3_encoder_select="ac3_encoder"
1792 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1793 eatgq_decoder_select="aandcttables idctdsp"
1794 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
1795 exr_decoder_deps="zlib"
1796 ffv1_decoder_select="golomb rangecoder"
1797 ffv1_encoder_select="rangecoder"
1798 ffvhuff_decoder_select="huffyuv_decoder"
1799 ffvhuff_encoder_select="huffyuv_encoder"
1800 fic_decoder_select="golomb"
1801 flac_decoder_select="golomb"
1802 flac_encoder_select="bswapdsp golomb lpc"
1803 flashsv_decoder_deps="zlib"
1804 flashsv_encoder_deps="zlib"
1805 flashsv2_decoder_deps="zlib"
1806 flv_decoder_select="h263_decoder"
1807 flv_encoder_select="h263_encoder"
1808 fourxm_decoder_select="blockdsp bswapdsp"
1809 fraps_decoder_select="bswapdsp huffman"
1810 g2m_decoder_deps="zlib"
1811 g2m_decoder_select="blockdsp idctdsp"
1812 h261_decoder_select="mpeg_er mpegvideo"
1813 h261_encoder_select="aandcttables mpegvideoenc"
1814 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1815 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1816 h263i_decoder_select="h263_decoder"
1817 h263p_encoder_select="h263_encoder"
1818 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
1819 h264_decoder_suggest="error_resilience"
1820 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1821 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1822 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1823 iac_decoder_select="imc_decoder"
1824 imc_decoder_select="bswapdsp fft mdct sinewin"
1825 indeo3_decoder_select="hpeldsp"
1826 interplay_video_decoder_select="hpeldsp"
1827 jpegls_decoder_select="golomb mjpeg_decoder"
1828 jpegls_encoder_select="golomb"
1829 jv_decoder_select="blockdsp"
1830 lagarith_decoder_select="huffyuvdsp"
1831 ljpeg_encoder_select="aandcttables idctdsp"
1832 loco_decoder_select="golomb"
1833 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1834 metasound_decoder_select="lsp mdct sinewin"
1835 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1836 mjpeg_decoder_select="blockdsp hpeldsp idctdsp"
1837 mjpeg_encoder_select="aandcttables mpegvideoenc"
1838 mjpegb_decoder_select="mjpeg_decoder"
1839 mlp_decoder_select="mlp_parser"
1840 motionpixels_decoder_select="bswapdsp"
1841 mp1_decoder_select="mpegaudio"
1842 mp1float_decoder_select="mpegaudio"
1843 mp2_decoder_select="mpegaudio"
1844 mp2float_decoder_select="mpegaudio"
1845 mp3_decoder_select="mpegaudio"
1846 mp3adu_decoder_select="mpegaudio"
1847 mp3adufloat_decoder_select="mpegaudio"
1848 mp3float_decoder_select="mpegaudio"
1849 mp3on4_decoder_select="mpegaudio"
1850 mp3on4float_decoder_select="mpegaudio"
1851 mpc7_decoder_select="bswapdsp mpegaudiodsp"
1852 mpc8_decoder_select="mpegaudiodsp"
1853 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1854 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1855 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
1856 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1857 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
1858 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1859 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1860 mpeg4_encoder_select="h263_encoder"
1861 msmpeg4v1_decoder_select="h263_decoder"
1862 msmpeg4v2_decoder_select="h263_decoder"
1863 msmpeg4v2_encoder_select="h263_encoder"
1864 msmpeg4v3_decoder_select="h263_decoder"
1865 msmpeg4v3_encoder_select="h263_encoder"
1866 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
1867 mxpeg_decoder_select="mjpeg_decoder"
1868 nellymoser_decoder_select="mdct sinewin"
1869 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1870 nuv_decoder_select="idctdsp lzo"
1871 on2avc_decoder_select="mdct"
1872 opus_decoder_deps="avresample"
1873 png_decoder_deps="zlib"
1874 png_encoder_deps="zlib"
1875 png_encoder_select="huffyuvencdsp"
1876 prores_decoder_select="idctdsp"
1877 prores_encoder_select="fdctdsp"
1878 qcelp_decoder_select="lsp"
1879 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1880 ra_144_encoder_select="audio_frame_queue lpc"
1881 ralf_decoder_select="golomb"
1882 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1883 rv10_encoder_select="h263_encoder"
1884 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1885 rv20_encoder_select="h263_encoder"
1886 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1887 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1888 shorten_decoder_select="golomb"
1889 sipr_decoder_select="lsp"
1890 sp5x_decoder_select="mjpeg_decoder"
1891 svq1_decoder_select="hpeldsp"
1892 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
1893 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1894 svq3_decoder_suggest="zlib"
1895 tak_decoder_select="audiodsp"
1896 theora_decoder_select="vp3_decoder"
1897 thp_decoder_select="mjpeg_decoder"
1898 tiff_decoder_suggest="zlib"
1899 tiff_encoder_suggest="zlib"
1900 truehd_decoder_select="mlp_decoder"
1901 truemotion2_decoder_select="bswapdsp"
1902 truespeech_decoder_select="bswapdsp"
1903 tscc_decoder_deps="zlib"
1904 twinvq_decoder_select="mdct lsp sinewin"
1905 utvideo_decoder_select="bswapdsp"
1906 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
1907 vble_decoder_select="huffyuvdsp"
1908 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
1909 vc1image_decoder_select="vc1_decoder"
1910 vorbis_decoder_select="mdct"
1911 vorbis_encoder_select="mdct"
1912 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1913 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1914 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1915 vp6a_decoder_select="vp6_decoder"
1916 vp6f_decoder_select="vp6_decoder"
1917 vp7_decoder_select="h264pred videodsp"
1918 vp8_decoder_select="h264pred videodsp"
1919 vp9_decoder_select="videodsp"
1920 webp_decoder_select="vp8_decoder"
1921 wmapro_decoder_select="mdct sinewin wma_freqs"
1922 wmav1_decoder_select="mdct sinewin wma_freqs"
1923 wmav1_encoder_select="mdct sinewin wma_freqs"
1924 wmav2_decoder_select="mdct sinewin wma_freqs"
1925 wmav2_encoder_select="mdct sinewin wma_freqs"
1926 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1927 wmv1_decoder_select="h263_decoder"
1928 wmv1_encoder_select="h263_encoder"
1929 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
1930 wmv2_encoder_select="h263_encoder"
1931 wmv3_decoder_select="vc1_decoder"
1932 wmv3image_decoder_select="wmv3_decoder"
1933 zerocodec_decoder_deps="zlib"
1934 zlib_decoder_deps="zlib"
1935 zlib_encoder_deps="zlib"
1936 zmbv_decoder_deps="zlib"
1937 zmbv_encoder_deps="zlib"
1938
1939 # hardware accelerators
1940 dxva2_deps="dxva2api_h"
1941 vaapi_deps="va_va_h"
1942 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1943 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1944 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1945
1946 h263_vaapi_hwaccel_deps="vaapi"
1947 h263_vaapi_hwaccel_select="h263_decoder"
1948 h263_vdpau_hwaccel_deps="vdpau"
1949 h263_vdpau_hwaccel_select="h263_decoder"
1950 h264_dxva2_hwaccel_deps="dxva2"
1951 h264_dxva2_hwaccel_select="h264_decoder"
1952 h264_vaapi_hwaccel_deps="vaapi"
1953 h264_vaapi_hwaccel_select="h264_decoder"
1954 h264_vda_hwaccel_deps="vda"
1955 h264_vda_hwaccel_select="h264_decoder"
1956 h264_vda_old_hwaccel_deps="vda"
1957 h264_vda_old_hwaccel_select="h264_decoder"
1958 h264_vdpau_hwaccel_deps="vdpau"
1959 h264_vdpau_hwaccel_select="h264_decoder"
1960 mpeg1_vdpau_hwaccel_deps="vdpau"
1961 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1962 mpeg2_dxva2_hwaccel_deps="dxva2"
1963 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1964 mpeg2_vaapi_hwaccel_deps="vaapi"
1965 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1966 mpeg2_vdpau_hwaccel_deps="vdpau"
1967 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1968 mpeg4_vaapi_hwaccel_deps="vaapi"
1969 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1970 mpeg4_vdpau_hwaccel_deps="vdpau"
1971 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1972 vc1_dxva2_hwaccel_deps="dxva2"
1973 vc1_dxva2_hwaccel_select="vc1_decoder"
1974 vc1_vaapi_hwaccel_deps="vaapi"
1975 vc1_vaapi_hwaccel_select="vc1_decoder"
1976 vc1_vdpau_hwaccel_deps="vdpau"
1977 vc1_vdpau_hwaccel_select="vc1_decoder"
1978 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1979 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1980 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1981
1982 # parsers
1983 h264_parser_select="h264_decoder"
1984 mpegvideo_parser_select="mpegvideo"
1985 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
1986 vc1_parser_select="mpegvideo startcode"
1987
1988 # external libraries
1989 libfaac_encoder_deps="libfaac"
1990 libfaac_encoder_select="audio_frame_queue"
1991 libfdk_aac_decoder_deps="libfdk_aac"
1992 libfdk_aac_encoder_deps="libfdk_aac"
1993 libfdk_aac_encoder_select="audio_frame_queue"
1994 libgsm_decoder_deps="libgsm"
1995 libgsm_encoder_deps="libgsm"
1996 libgsm_ms_decoder_deps="libgsm"
1997 libgsm_ms_encoder_deps="libgsm"
1998 libilbc_decoder_deps="libilbc"
1999 libilbc_encoder_deps="libilbc"
2000 libmp3lame_encoder_deps="libmp3lame"
2001 libmp3lame_encoder_select="audio_frame_queue"
2002 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2003 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2004 libopencore_amrnb_encoder_select="audio_frame_queue"
2005 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2006 libopenjpeg_decoder_deps="libopenjpeg"
2007 libopenjpeg_encoder_deps="libopenjpeg"
2008 libopus_decoder_deps="libopus"
2009 libopus_encoder_deps="libopus"
2010 libopus_encoder_select="audio_frame_queue"
2011 libschroedinger_decoder_deps="libschroedinger"
2012 libschroedinger_encoder_deps="libschroedinger"
2013 libspeex_decoder_deps="libspeex"
2014 libspeex_encoder_deps="libspeex"
2015 libspeex_encoder_select="audio_frame_queue"
2016 libtheora_encoder_deps="libtheora"
2017 libtwolame_encoder_deps="libtwolame"
2018 libvo_aacenc_encoder_deps="libvo_aacenc"
2019 libvo_aacenc_encoder_select="audio_frame_queue"
2020 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2021 libvorbis_encoder_deps="libvorbis"
2022 libvorbis_encoder_select="audio_frame_queue"
2023 libvpx_vp8_decoder_deps="libvpx"
2024 libvpx_vp8_encoder_deps="libvpx"
2025 libvpx_vp9_decoder_deps="libvpx"
2026 libvpx_vp9_encoder_deps="libvpx"
2027 libwavpack_encoder_deps="libwavpack"
2028 libwebp_encoder_deps="libwebp"
2029 libx264_encoder_deps="libx264"
2030 libx265_encoder_deps="libx265"
2031 libxavs_encoder_deps="libxavs"
2032 libxvid_encoder_deps="libxvid"
2033
2034 # demuxers / muxers
2035 ac3_demuxer_select="ac3_parser"
2036 asf_demuxer_select="riffdec"
2037 asf_muxer_select="riffenc"
2038 asf_stream_muxer_select="asf_muxer"
2039 avi_demuxer_select="riffdec"
2040 avi_muxer_select="riffenc"
2041 avisynth_demuxer_deps="avisynth"
2042 avisynth_demuxer_select="riffdec"
2043 caf_demuxer_select="riffdec"
2044 dash_muxer_select="mp4_muxer"
2045 dirac_demuxer_select="dirac_parser"
2046 dv_demuxer_select="dvprofile"
2047 dv_muxer_select="dvprofile"
2048 dxa_demuxer_select="riffdec"
2049 eac3_demuxer_select="ac3_parser"
2050 f4v_muxer_select="mov_muxer"
2051 flac_demuxer_select="flac_parser"
2052 hds_muxer_select="flv_muxer"
2053 hls_muxer_select="mpegts_muxer"
2054 ipod_muxer_select="mov_muxer"
2055 ismv_muxer_select="mov_muxer"
2056 matroska_audio_muxer_select="matroska_muxer"
2057 matroska_demuxer_select="riffdec"
2058 matroska_demuxer_suggest="bzlib lzo zlib"
2059 matroska_muxer_select="riffenc"
2060 mmf_muxer_select="riffenc"
2061 mov_demuxer_select="riffdec"
2062 mov_demuxer_suggest="zlib"
2063 mov_muxer_select="riffenc rtpenc_chain"
2064 mp3_demuxer_select="mpegaudio_parser"
2065 mp4_muxer_select="mov_muxer"
2066 mpegts_muxer_select="adts_muxer latm_muxer"
2067 mpegtsraw_demuxer_select="mpegts_demuxer"
2068 mxf_d10_muxer_select="mxf_muxer"
2069 nut_muxer_select="riffenc"
2070 nuv_demuxer_select="riffdec"
2071 oga_muxer_select="ogg_muxer"
2072 ogg_demuxer_select="golomb"
2073 opus_muxer_select="ogg_muxer"
2074 psp_muxer_select="mov_muxer"
2075 rtp_demuxer_select="sdp_demuxer"
2076 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2077 rtsp_demuxer_select="http_protocol rtpdec"
2078 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2079 sap_demuxer_select="sdp_demuxer"
2080 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2081 sdp_demuxer_select="rtpdec"
2082 smoothstreaming_muxer_select="ismv_muxer"
2083 spdif_muxer_select="aac_parser"
2084 spx_muxer_select="ogg_muxer"
2085 tak_demuxer_select="tak_parser"
2086 tg2_muxer_select="mov_muxer"
2087 tgp_muxer_select="mov_muxer"
2088 w64_demuxer_select="wav_demuxer"
2089 wav_demuxer_select="riffdec"
2090 wav_muxer_select="riffenc"
2091 webm_muxer_select="riffenc"
2092 wtv_demuxer_select="riffdec"
2093 xmv_demuxer_select="riffdec"
2094 xwma_demuxer_select="riffdec"
2095
2096 # indevs / outdevs
2097 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2098 alsa_outdev_deps="alsa_asoundlib_h"
2099 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2100 dv1394_indev_deps="dv1394"
2101 dv1394_indev_select="dv_demuxer"
2102 fbdev_indev_deps="linux_fb_h"
2103 jack_indev_deps="jack_jack_h pthreads"
2104 libcdio_indev_deps="libcdio"
2105 libdc1394_indev_deps="libdc1394"
2106 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2107 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2108 pulse_indev_deps="libpulse"
2109 sndio_indev_deps="sndio_h"
2110 sndio_outdev_deps="sndio_h"
2111 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2112 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2113 vfwcap_indev_extralibs="-lavicap32"
2114 x11grab_indev_deps="x11grab"
2115 x11grab_xcb_indev_deps="libxcb"
2116
2117 # protocols
2118 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2119 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2120 ffrtmpcrypt_protocol_select="tcp_protocol"
2121 ffrtmphttp_protocol_deps="!librtmp_protocol"
2122 ffrtmphttp_protocol_select="http_protocol"
2123 gopher_protocol_select="network"
2124 http_protocol_select="tcp_protocol"
2125 httpproxy_protocol_select="tcp_protocol"
2126 https_protocol_select="tls_protocol"
2127 icecast_protocol_select="http_protocol"
2128 librtmp_protocol_deps="librtmp"
2129 librtmpe_protocol_deps="librtmp"
2130 librtmps_protocol_deps="librtmp"
2131 librtmpt_protocol_deps="librtmp"
2132 librtmpte_protocol_deps="librtmp"
2133 mmsh_protocol_select="http_protocol"
2134 mmst_protocol_select="network"
2135 rtmp_protocol_deps="!librtmp_protocol"
2136 rtmp_protocol_select="tcp_protocol"
2137 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2138 rtmps_protocol_deps="!librtmp_protocol"
2139 rtmps_protocol_select="tls_protocol"
2140 rtmpt_protocol_select="ffrtmphttp_protocol"
2141 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2142 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2143 rtp_protocol_select="udp_protocol"
2144 sctp_protocol_deps="struct_sctp_event_subscribe"
2145 sctp_protocol_select="network"
2146 srtp_protocol_select="rtp_protocol"
2147 tcp_protocol_select="network"
2148 tls_protocol_deps_any="openssl gnutls"
2149 tls_protocol_select="tcp_protocol"
2150 udp_protocol_select="network"
2151 unix_protocol_deps="sys_un_h"
2152 unix_protocol_select="network"
2153
2154 # filters
2155 blackframe_filter_deps="gpl"
2156 boxblur_filter_deps="gpl"
2157 bs2b_filter_deps="libbs2b"
2158 cropdetect_filter_deps="gpl"
2159 delogo_filter_deps="gpl"
2160 drawtext_filter_deps="libfreetype"
2161 frei0r_filter_deps="frei0r dlopen"
2162 frei0r_filter_extralibs='$ldl'
2163 frei0r_src_filter_deps="frei0r dlopen"
2164 frei0r_src_filter_extralibs='$ldl'
2165 hqdn3d_filter_deps="gpl"
2166 interlace_filter_deps="gpl"
2167 ocv_filter_deps="libopencv"
2168 resample_filter_deps="avresample"
2169 scale_filter_deps="swscale"
2170
2171 # examples
2172 avcodec_example_deps="avcodec avutil"
2173 filter_audio_example_deps="avfilter avutil"
2174 metadata_example_deps="avformat avutil"
2175 output_example_deps="avcodec avformat avutil swscale"
2176 transcode_aac_example_deps="avcodec avformat avresample"
2177
2178 # libraries, in linking order
2179 avcodec_deps="avutil"
2180 avdevice_deps="avformat avcodec avutil"
2181 avfilter_deps="avutil"
2182 avformat_deps="avcodec avutil"
2183 avresample_deps="avutil"
2184 swscale_deps="avutil"
2185
2186 # programs
2187 avconv_deps="avcodec avfilter avformat avresample swscale"
2188 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2189                fps_filter null_filter resample_filter scale_filter
2190                setpts_filter trim_filter"
2191 avplay_deps="avcodec avformat avresample swscale sdl"
2192 avplay_libs='$sdl_libs'
2193 avplay_select="rdft"
2194 avprobe_deps="avcodec avformat"
2195
2196 # documentation
2197 pod2man_deps="doc"
2198 texi2html_deps="doc"
2199
2200 # default parameters
2201
2202 logfile="config.log"
2203
2204 # installation paths
2205 prefix_default="/usr/local"
2206 bindir_default='${prefix}/bin'
2207 datadir_default='${prefix}/share/avconv'
2208 docdir_default='${prefix}/share/doc/libav'
2209 incdir_default='${prefix}/include'
2210 libdir_default='${prefix}/lib'
2211 mandir_default='${prefix}/share/man'
2212 shlibdir_default="$libdir_default"
2213
2214 # toolchain
2215 ar_default="ar"
2216 cc_default="gcc"
2217 host_cc_default="gcc"
2218 cp_f="cp -f"
2219 ln_s="ln -s -f"
2220 nm_default="nm -g"
2221 objformat="elf"
2222 pkg_config_default=pkg-config
2223 ranlib="ranlib"
2224 strip="strip"
2225 yasmexe="yasm"
2226
2227 # machine
2228 arch_default=$(uname -m)
2229 cpu="generic"
2230 intrinsics="none"
2231
2232 # OS
2233 target_os_default=$(tolower $(uname -s))
2234 host_os=$target_os_default
2235
2236 # configurable options
2237 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2238
2239 enable asm
2240 enable debug
2241 enable doc
2242 enable faan faandct faanidct
2243 enable optimizations
2244 enable safe_bitstream_reader
2245 enable static
2246 enable swscale_alpha
2247
2248 # By default, enable only those hwaccels that have no external dependencies.
2249 enable dxva2 vda vdpau
2250
2251 # build settings
2252 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2253 LIBPREF="lib"
2254 LIBSUF=".a"
2255 FULLNAME='$(NAME)$(BUILDSUF)'
2256 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2257 SLIBPREF="lib"
2258 SLIBSUF=".so"
2259 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2260 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2261 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2262 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2263 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2264 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2265
2266 asflags_filter=echo
2267 cflags_filter=echo
2268 ldflags_filter=echo
2269
2270 AS_C='-c'
2271 AS_O='-o $@'
2272 CC_C='-c'
2273 CC_E='-E -o $@'
2274 CC_O='-o $@'
2275 LD_O='-o $@'
2276 LD_LIB='-l%'
2277 LD_PATH='-L'
2278 HOSTCC_C='-c'
2279 HOSTCC_E='-E -o $@'
2280 HOSTCC_O='-o $@'
2281 HOSTLD_O='-o $@'
2282
2283 host_libs='-lm'
2284 host_cflags_filter=echo
2285 host_ldflags_filter=echo
2286
2287 target_path='$(CURDIR)'
2288
2289 # since the object filename is not given with the -MM flag, the compiler
2290 # is only able to print the basename, and we must add the path ourselves
2291 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2292 DEPFLAGS='-MM'
2293
2294 # find source path
2295 if test -f configure; then
2296     source_path=.
2297 else
2298     source_path=$(cd $(dirname "$0"); pwd)
2299     echo "$source_path" | grep -q '[[:blank:]]' &&
2300         die "Out of tree builds are impossible with whitespace in source path."
2301     test -e "$source_path/config.h" &&
2302         die "Out of tree builds are impossible with config.h in source dir."
2303 fi
2304
2305 for v in "$@"; do
2306     r=${v#*=}
2307     l=${v%"$r"}
2308     r=$(sh_quote "$r")
2309     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2310 done
2311
2312 find_things(){
2313     thing=$1
2314     pattern=$2
2315     file=$source_path/$3
2316     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2317 }
2318
2319 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2320 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2321 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2322 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2323 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2324 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2325 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2326 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2327 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2328 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2329 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2330
2331 ALL_COMPONENTS="
2332     $BSF_LIST
2333     $DECODER_LIST
2334     $DEMUXER_LIST
2335     $ENCODER_LIST
2336     $FILTER_LIST
2337     $HWACCEL_LIST
2338     $INDEV_LIST
2339     $MUXER_LIST
2340     $OUTDEV_LIST
2341     $PARSER_LIST
2342     $PROTOCOL_LIST
2343 "
2344
2345 for n in $COMPONENT_LIST; do
2346     v=$(toupper ${n%s})_LIST
2347     eval enable \$$v
2348     eval ${n}_if_any="\$$v"
2349 done
2350
2351 enable $ARCH_EXT_LIST
2352
2353 die_unknown(){
2354     echo "Unknown option \"$1\"."
2355     echo "See $0 --help for available options."
2356     exit 1
2357 }
2358
2359 print_3_columns() {
2360     cat | tr ' ' '\n' | sort | pr -r -3 -t
2361 }
2362
2363 show_list() {
2364     suffix=_$1
2365     shift
2366     echo $* | sed s/$suffix//g | print_3_columns
2367     exit 0
2368 }
2369
2370 rand_list(){
2371     IFS=', '
2372     set -- $*
2373     unset IFS
2374     for thing; do
2375         comp=${thing%:*}
2376         prob=${thing#$comp}
2377         prob=${prob#:}
2378         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2379         echo "prob ${prob:-0.5}"
2380         printf '%s\n' $comp
2381     done
2382 }
2383
2384 do_random(){
2385     action=$1
2386     shift
2387     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2388     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2389 }
2390
2391 for opt do
2392     optval="${opt#*=}"
2393     case "$opt" in
2394         --extra-ldflags=*)
2395             add_ldflags $optval
2396         ;;
2397         --extra-ldexeflags=*)
2398             add_ldexeflags $optval
2399         ;;
2400         --extra-libs=*)
2401             add_extralibs $optval
2402         ;;
2403         --disable-devices)
2404             disable $INDEV_LIST $OUTDEV_LIST
2405         ;;
2406         --enable-debug=*)
2407             debuglevel="$optval"
2408         ;;
2409         --disable-programs)
2410             disable $PROGRAM_LIST
2411         ;;
2412         --disable-everything)
2413             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2414         ;;
2415         --disable-all)
2416             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2417             disable $LIBRARY_LIST $PROGRAM_LIST doc
2418         ;;
2419         --enable-random|--disable-random)
2420             action=${opt%%-random}
2421             do_random ${action#--} $COMPONENT_LIST
2422         ;;
2423         --enable-random=*|--disable-random=*)
2424             action=${opt%%-random=*}
2425             do_random ${action#--} $optval
2426         ;;
2427         --enable-*=*|--disable-*=*)
2428             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2429             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2430             eval list=\$$(toupper $thing)_LIST
2431             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2432             $action $(filter "$name" $list)
2433         ;;
2434         --enable-avserver|--disable-avserver*)
2435             warn "avserver has been removed, the ${opt} option is only"\
2436                  "provided for compatibility and will be removed in the future"
2437         ;;
2438         --enable-?*|--disable-?*)
2439             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2440             if is_in $option $COMPONENT_LIST; then
2441                 test $action = disable && action=unset
2442                 eval $action \$$(toupper ${option%s})_LIST
2443             elif is_in $option $CMDLINE_SELECT; then
2444                 $action $option
2445             else
2446                 die_unknown $opt
2447             fi
2448         ;;
2449         --list-*)
2450             NAME="${opt#--list-}"
2451             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2452             NAME=${NAME%s}
2453             eval show_list $NAME \$$(toupper $NAME)_LIST
2454         ;;
2455         --help|-h) show_help
2456         ;;
2457         *)
2458             optname="${opt%%=*}"
2459             optname="${optname#--}"
2460             optname=$(echo "$optname" | sed 's/-/_/g')
2461             if is_in $optname $CMDLINE_SET; then
2462                 eval $optname='$optval'
2463             elif is_in $optname $CMDLINE_APPEND; then
2464                 append $optname "$optval"
2465             else
2466                 die_unknown $opt
2467             fi
2468         ;;
2469     esac
2470 done
2471
2472 disabled logging && logfile=/dev/null
2473
2474 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2475 set >> $logfile
2476
2477 test -n "$cross_prefix" && enable cross_compile
2478
2479 if enabled cross_compile; then
2480     test -n "$arch" && test -n "$target_os" ||
2481         die "Must specify target arch and OS when cross-compiling"
2482 fi
2483
2484 ar_default="${cross_prefix}${ar_default}"
2485 cc_default="${cross_prefix}${cc_default}"
2486 nm_default="${cross_prefix}${nm_default}"
2487 pkg_config_default="${cross_prefix}${pkg_config_default}"
2488 ranlib="${cross_prefix}${ranlib}"
2489 strip="${cross_prefix}${strip}"
2490
2491 sysinclude_default="${sysroot}/usr/include"
2492
2493 case "$toolchain" in
2494     clang-asan)
2495         cc_default="clang"
2496         add_cflags  -fsanitize=address
2497         add_ldflags -fsanitize=address
2498     ;;
2499     clang-tsan)
2500         cc_default="clang"
2501         add_cflags  -fsanitize=thread -pie
2502         add_ldflags -fsanitize=thread -pie
2503     ;;
2504     clang-usan)
2505         cc_default="clang"
2506         add_cflags  -fsanitize=undefined -O1
2507         add_ldflags -fsanitize=undefined
2508     ;;
2509     gcc-asan)
2510         cc_default="gcc"
2511         add_cflags  -fsanitize=address
2512         add_ldflags -fsanitize=address
2513     ;;
2514     gcc-tsan)
2515         cc_default="gcc"
2516         add_cflags  -fsanitize=thread -pie -fPIC
2517         add_ldflags -fsanitize=thread -pie -fPIC
2518     ;;
2519     gcc-usan)
2520         cc_default="gcc"
2521         add_cflags  -fsanitize=undefined
2522         add_ldflags -fsanitize=undefined
2523     ;;
2524     valgrind-massif)
2525         target_exec_default="valgrind"
2526         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2527     ;;
2528     valgrind-memcheck)
2529         target_exec_default="valgrind"
2530         target_exec_args="--track-origins=yes --leak-check=full"
2531     ;;
2532     msvc)
2533         # Check whether the current MSVC version needs the C99 converter.
2534         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2535         # support enough of C99 to build libav. Default to the new
2536         # behaviour if the regexp was unable to match anything, since this
2537         # successfully parses the version number of existing supported
2538         # versions that require the converter (MSVC 2010 and 2012).
2539         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2540         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2541             cc_default="cl"
2542         else
2543             cc_default="c99wrap cl"
2544         fi
2545         ld_default="link"
2546         nm_default="dumpbin -symbols"
2547         ar_default="lib"
2548         target_os_default="win32"
2549         # Use a relative path for TMPDIR. This makes sure all the
2550         # ffconf temp files are written with a relative path, avoiding
2551         # issues with msys/win32 path conversion for MSVC parameters
2552         # such as -Fo<file> or -out:<file>.
2553         TMPDIR=.
2554     ;;
2555     icl)
2556         cc_default="icl"
2557         ld_default="xilink"
2558         nm_default="dumpbin -symbols"
2559         ar_default="xilib"
2560         target_os_default="win32"
2561         TMPDIR=.
2562     ;;
2563     gcov)
2564         add_cflags  -fprofile-arcs -ftest-coverage
2565         add_ldflags -fprofile-arcs -ftest-coverage
2566     ;;
2567     hardened)
2568         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2569         add_cflags   -fno-strict-overflow -fstack-protector-all
2570         add_ldflags  -Wl,-z,relro -Wl,-z,now
2571     ;;
2572     ?*)
2573         die "Unknown toolchain $toolchain"
2574     ;;
2575 esac
2576
2577 set_default arch cc pkg_config sysinclude target_exec target_os
2578 enabled cross_compile || host_cc_default=$cc
2579 set_default host_cc
2580
2581 if ! $pkg_config --version >/dev/null 2>&1; then
2582     warn "$pkg_config not found, library detection may fail."
2583     pkg_config=false
2584 fi
2585
2586 exesuf() {
2587     case $1 in
2588         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2589     esac
2590 }
2591
2592 EXESUF=$(exesuf $target_os)
2593 HOSTEXESUF=$(exesuf $host_os)
2594
2595 # set temporary file name
2596 : ${TMPDIR:=$TEMPDIR}
2597 : ${TMPDIR:=$TMP}
2598 : ${TMPDIR:=/tmp}
2599
2600 if ! check_cmd mktemp -u XXXXXX; then
2601     # simple replacement for missing mktemp
2602     # NOT SAFE FOR GENERAL USE
2603     mktemp(){
2604         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2605     }
2606 fi
2607
2608 tmpfile(){
2609     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2610         (set -C; exec > $tmp) 2>/dev/null ||
2611         die "Unable to create temporary file in $TMPDIR."
2612     append TMPFILES $tmp
2613     eval $1=$tmp
2614 }
2615
2616 trap 'rm -f -- $TMPFILES' EXIT
2617
2618 tmpfile TMPASM .asm
2619 tmpfile TMPC   .c
2620 tmpfile TMPE   $EXESUF
2621 tmpfile TMPH   .h
2622 tmpfile TMPO   .o
2623 tmpfile TMPS   .S
2624 tmpfile TMPSH  .sh
2625 tmpfile TMPV   .ver
2626
2627 unset -f mktemp
2628
2629 chmod +x $TMPE
2630
2631 # make sure we can execute files in $TMPDIR
2632 cat > $TMPSH 2>> $logfile <<EOF
2633 #! /bin/sh
2634 EOF
2635 chmod +x $TMPSH >> $logfile 2>&1
2636 if ! $TMPSH >> $logfile 2>&1; then
2637     cat <<EOF
2638 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2639 variable to another directory and make sure that it is not mounted noexec.
2640 EOF
2641     die "Sanity test failed."
2642 fi
2643
2644 armasm_flags(){
2645     for flag; do
2646         case $flag in
2647             # Filter out MSVC cl.exe options from cflags that shouldn't
2648             # be passed to gas-preprocessor
2649             -M[TD]*)                                            ;;
2650             *)                  echo $flag                      ;;
2651         esac
2652    done
2653 }
2654
2655 ccc_flags(){
2656     for flag; do
2657         case $flag in
2658             -std=c99)           echo -c99                       ;;
2659             -mcpu=*)            echo -arch ${flag#*=}           ;;
2660             -mieee)             echo -ieee                      ;;
2661             -O*|-fast)          echo $flag                      ;;
2662             -fno-math-errno)    echo -assume nomath_errno       ;;
2663             -g)                 echo -g3                        ;;
2664             -Wall)              echo -msg_enable level2         ;;
2665             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2666             -Wl,*)              echo $flag                      ;;
2667             -f*|-W*)                                            ;;
2668             *)                  echo $flag                      ;;
2669         esac
2670    done
2671 }
2672
2673 cparser_flags(){
2674     for flag; do
2675         case $flag in
2676             -Wno-switch)             echo -Wno-switch-enum ;;
2677             -Wno-format-zero-length) ;;
2678             -Wdisabled-optimization) ;;
2679             -Wno-pointer-sign)       echo -Wno-other ;;
2680             *)                       echo $flag ;;
2681         esac
2682     done
2683 }
2684
2685 msvc_common_flags(){
2686     for flag; do
2687         case $flag in
2688             # In addition to specifying certain flags under the compiler
2689             # specific filters, they must be specified here as well or else the
2690             # generic catch all at the bottom will print the original flag.
2691             -Wall)                ;;
2692             -std=c99)             ;;
2693             # Common flags
2694             -fomit-frame-pointer) ;;
2695             -g)                   echo -Z7 ;;
2696             -fno-math-errno)      ;;
2697             -fno-common)          ;;
2698             -fno-signed-zeros)    ;;
2699             -fPIC)                ;;
2700             -mthumb)              ;;
2701             -march=*)             ;;
2702             -lz)                  echo zlib.lib ;;
2703             -lavifil32)           echo vfw32.lib ;;
2704             -lavicap32)           echo vfw32.lib user32.lib ;;
2705             -l*)                  echo ${flag#-l}.lib ;;
2706             *)                    echo $flag ;;
2707         esac
2708     done
2709 }
2710
2711 msvc_flags(){
2712     msvc_common_flags "$@"
2713     for flag; do
2714         case $flag in
2715             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2716                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2717                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2718                                        -wd4273 -wd4701 ;;
2719         esac
2720     done
2721 }
2722
2723 icl_flags(){
2724     msvc_common_flags "$@"
2725     for flag; do
2726         case $flag in
2727             # Despite what Intel's documentation says -Wall, which is supported
2728             # on Windows, does enable remarks so disable them here.
2729             -Wall)                echo $flag -Qdiag-disable:remark ;;
2730             -std=c99)             echo -Qstd=c99 ;;
2731         esac
2732     done
2733 }
2734
2735 pgi_flags(){
2736     for flag; do
2737         case $flag in
2738             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2739             -fomit-frame-pointer) echo -Mnoframe ;;
2740             -g)                   echo -gopt ;;
2741             *)                    echo $flag ;;
2742         esac
2743     done
2744 }
2745
2746 suncc_flags(){
2747     for flag; do
2748         case $flag in
2749             -march=*|-mcpu=*)
2750                 case "${flag#*=}" in
2751                     native)                   echo -xtarget=native       ;;
2752                     v9|niagara)               echo -xarch=sparc          ;;
2753                     ultrasparc)               echo -xarch=sparcvis       ;;
2754                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2755                     i586|pentium)             echo -xchip=pentium        ;;
2756                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2757                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2758                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2759                     pentium4*)          echo -xtarget=pentium4           ;;
2760                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2761                     *-sse3)             echo -xarch=sse3                 ;;
2762                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2763                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2764                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2765                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2766                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2767                     k8|opteron|athlon64|athlon-fx)
2768                                                echo -xarch=sse2a         ;;
2769                     athlon*)                   echo -xarch=pentium_proa  ;;
2770                 esac
2771                 ;;
2772             -std=c99)             echo -xc99              ;;
2773             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2774             -fPIC)                echo -KPIC -xcode=pic32 ;;
2775             -W*,*)                echo $flag              ;;
2776             -f*-*|-W*|-mimpure-text)                      ;;
2777             -shared)              echo -G                 ;;
2778             *)                    echo $flag              ;;
2779         esac
2780     done
2781 }
2782
2783 tms470_flags(){
2784     for flag; do
2785         case $flag in
2786             -march=*|-mcpu=*)
2787                 case "${flag#*=}" in
2788                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2789                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2790                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2791                     armv6*|arm11*)          echo -mv=6   ;;
2792                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2793                                             echo -mv=5e  ;;
2794                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2795                 esac
2796                 ;;
2797             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2798             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2799             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2800             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2801             -msoft-float)   echo --float_support=vfplib       ;;
2802             -O[0-3]|-mf=*)  echo $flag                        ;;
2803             -g)             echo -g -mn                       ;;
2804             -pds=*)         echo $flag                        ;;
2805             -D*|-I*)        echo $flag                        ;;
2806             --gcc|--abi=*)  echo $flag                        ;;
2807             -me)            echo $flag                        ;;
2808         esac
2809     done
2810 }
2811
2812 probe_cc(){
2813     pfx=$1
2814     _cc=$2
2815
2816     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2817     unset _ld_o _ldflags _ld_lib _ld_path
2818     unset _depflags _DEPCMD _DEPFLAGS
2819     _flags_filter=echo
2820
2821     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2822         _type=llvm_gcc
2823         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2824         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2825         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2826         _cflags_speed='-O3'
2827         _cflags_size='-Os'
2828     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2829         _type=gcc
2830         gcc_version=$($_cc --version | head -n1)
2831         gcc_basever=$($_cc -dumpversion)
2832         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2833         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2834         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2835         if ! $_cc -dumpversion | grep -q '^2\.'; then
2836             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2837         fi
2838         _cflags_speed='-O3'
2839         _cflags_size='-Os'
2840     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2841         _type=icc
2842         _ident=$($_cc --version | head -n1)
2843         _depflags='-MMD'
2844         _cflags_speed='-O3'
2845         _cflags_size='-Os'
2846         _cflags_noopt='-O1'
2847     elif $_cc -v 2>&1 | grep -q xlc; then
2848         _type=xlc
2849         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2850         _cflags_speed='-O5'
2851         _cflags_size='-O5 -qcompact'
2852     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2853         _type=ccc
2854         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2855         _DEPFLAGS='-M'
2856         _cflags_speed='-fast'
2857         _cflags_size='-O1'
2858         _flags_filter=ccc_flags
2859     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2860         test -d "$sysroot" || die "No valid sysroot specified."
2861         _type=armcc
2862         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
2863         armcc_conf="$PWD/armcc.conf"
2864         $_cc --arm_linux_configure                 \
2865              --arm_linux_config_file="$armcc_conf" \
2866              --configure_sysroot="$sysroot"        \
2867              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2868              die "Error creating armcc configuration file."
2869         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2870         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2871         as_default="${cross_prefix}gcc"
2872         _depflags='-MMD'
2873         _cflags_speed='-O3'
2874         _cflags_size='-Os'
2875     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2876         _type=tms470
2877         _ident=$($_cc -version | head -n1 | tr -s ' ')
2878         _flags='--gcc --abi=eabi -me'
2879         _cc_e='-ppl -fe=$@'
2880         _cc_o='-fe=$@'
2881         _depflags='-ppa -ppd=$(@:.o=.d)'
2882         _cflags_speed='-O3 -mf=5'
2883         _cflags_size='-O3 -mf=2'
2884         _flags_filter=tms470_flags
2885     elif $_cc -v 2>&1 | grep -q clang; then
2886         _type=clang
2887         _ident=$($_cc --version | head -n1)
2888         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2889         _cflags_speed='-O3'
2890         _cflags_size='-Os'
2891     elif $_cc -V 2>&1 | grep -q Sun; then
2892         _type=suncc
2893         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2894         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2895         _DEPFLAGS='-xM1 -xc99'
2896         _ldflags='-std=c99'
2897         _cflags_speed='-O5'
2898         _cflags_size='-O5 -xspace'
2899         _flags_filter=suncc_flags
2900     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2901         _type=pathscale
2902         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2903         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2904         _cflags_speed='-O2'
2905         _cflags_size='-Os'
2906         _flags_filter='filter_out -Wdisabled-optimization'
2907     elif $_cc -v 2>&1 | grep -q Open64; then
2908         _type=open64
2909         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2910         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2911         _cflags_speed='-O2'
2912         _cflags_size='-Os'
2913         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2914     elif $_cc -V 2>&1 | grep -q Portland; then
2915         _type=pgi
2916         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2917         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2918         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2919         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2920         _cflags_noopt="-O1"
2921         _flags_filter=pgi_flags
2922     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
2923         _type=armasm
2924         _ident=$($_cc | head -n1)
2925         # 4509: "This form of conditional instruction is deprecated"
2926         _flags="-nologo -ignore 4509"
2927         _flags_filter=armasm_flags
2928     elif $_cc 2>&1 | grep -q Microsoft; then
2929         _type=msvc
2930         _ident=$($cc 2>&1 | head -n1)
2931         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2932         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2933         _cflags_speed="-O2"
2934         _cflags_size="-O1"
2935         if $_cc 2>&1 | grep -q Linker; then
2936             _ld_o='-out:$@'
2937         else
2938             _ld_o='-Fe$@'
2939         fi
2940         _cc_o='-Fo$@'
2941         _cc_e='-P -Fi$@'
2942         _flags_filter=msvc_flags
2943         _ld_lib='lib%.a'
2944         _ld_path='-libpath:'
2945         _flags='-nologo'
2946         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2947         if [ $pfx = hostcc ]; then
2948             append _cflags -Dsnprintf=_snprintf
2949         fi
2950     elif $_cc 2>&1 | grep -q Intel; then
2951         _type=icl
2952         _ident=$($cc 2>&1 | head -n1)
2953         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2954         # Not only is O3 broken on 13.x+ but it is slower on all previous
2955         # versions (tested) as well.
2956         _cflags_speed="-O2"
2957         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2958         if $_cc 2>&1 | grep -q Linker; then
2959             _ld_o='-out:$@'
2960         else
2961             _ld_o='-Fe$@'
2962         fi
2963         _cc_o='-Fo$@'
2964         _cc_e='-P'
2965         _flags_filter=icl_flags
2966         _ld_lib='lib%.a'
2967         _ld_path='-libpath:'
2968         # -Qdiag-error to make icl error when seeing certain unknown arguments
2969         _flags='-nologo -Qdiag-error:4044,10157'
2970         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2971         # with MSVC which enables it by default.
2972         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2973         if [ $pfx = hostcc ]; then
2974             append _cflags -Dsnprintf=_snprintf
2975         fi
2976     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
2977         _type=cparser
2978         _ident=$($_cc --version | head -n1)
2979         _depflags='-MMD'
2980         _cflags_speed='-O4'
2981         _cflags_size='-O2'
2982         _flags_filter=cparser_flags
2983     fi
2984
2985     eval ${pfx}_type=\$_type
2986     eval ${pfx}_ident=\$_ident
2987 }
2988
2989 set_ccvars(){
2990     eval ${1}_C=\${_cc_c-\${${1}_C}}
2991     eval ${1}_E=\${_cc_e-\${${1}_E}}
2992     eval ${1}_O=\${_cc_o-\${${1}_O}}
2993
2994     if [ -n "$_depflags" ]; then
2995         eval ${1}_DEPFLAGS=\$_depflags
2996     else
2997         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2998         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2999         eval DEP${1}FLAGS=\$_flags
3000     fi
3001 }
3002
3003 probe_cc cc "$cc"
3004 cflags_filter=$_flags_filter
3005 cflags_speed=$_cflags_speed
3006 cflags_size=$_cflags_size
3007 cflags_noopt=$_cflags_noopt
3008 add_cflags $_flags $_cflags
3009 cc_ldflags=$_ldflags
3010 set_ccvars CC
3011
3012 probe_cc hostcc "$host_cc"
3013 host_cflags_filter=$_flags_filter
3014 add_host_cflags  $_flags $_cflags
3015 set_ccvars HOSTCC
3016
3017 test -n "$cc_type" && enable $cc_type ||
3018     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3019
3020 : ${as_default:=$cc}
3021 : ${dep_cc_default:=$cc}
3022 : ${ld_default:=$cc}
3023 : ${host_ld_default:=$host_cc}
3024 set_default ar as dep_cc ld host_ld
3025
3026 probe_cc as "$as"
3027 asflags_filter=$_flags_filter
3028 add_asflags $_flags $_cflags
3029 set_ccvars AS
3030
3031 probe_cc ld "$ld"
3032 ldflags_filter=$_flags_filter
3033 add_ldflags $_flags $_ldflags
3034 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3035 LD_O=${_ld_o-$LD_O}
3036 LD_LIB=${_ld_lib-$LD_LIB}
3037 LD_PATH=${_ld_path-$LD_PATH}
3038
3039 probe_cc hostld "$host_ld"
3040 host_ldflags_filter=$_flags_filter
3041 add_host_ldflags $_flags $_ldflags
3042 HOSTLD_O=${_ld_o-$HOSTLD_O}
3043
3044 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3045     probe_cc depcc "$dep_cc"
3046     CCDEP=${_DEPCMD:-$DEPCMD}
3047     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3048     DEPCCFLAGS=$_flags
3049 fi
3050
3051 if $ar 2>&1 | grep -q Microsoft; then
3052     arflags="-nologo"
3053     ar_o='-out:$@'
3054 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3055     arflags="rq"
3056     ar_o='$@'
3057 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3058     arflags='-Xany -r -c'
3059     ar_o='$@'
3060 else
3061     arflags="rc"
3062     ar_o='$@'
3063 fi
3064
3065 add_cflags $extra_cflags
3066 add_asflags $extra_cflags
3067
3068 if test -n "$sysroot"; then
3069     case "$cc_type" in
3070         gcc|llvm_gcc|clang)
3071             add_cppflags --sysroot="$sysroot"
3072             add_ldflags --sysroot="$sysroot"
3073         ;;
3074         tms470)
3075             add_cppflags -I"$sysinclude"
3076             add_ldflags  --sysroot="$sysroot"
3077         ;;
3078     esac
3079 fi
3080
3081 if test "$cpu" = host; then
3082     enabled cross_compile &&
3083         die "--cpu=host makes no sense when cross-compiling."
3084
3085     case "$cc_type" in
3086         gcc|llvm_gcc)
3087             check_native(){
3088                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3089                 sed -n "/cc1.*$1=/{
3090                             s/.*$1=\\([^ ]*\\).*/\\1/
3091                             p
3092                             q
3093                         }" $TMPE
3094             }
3095             cpu=$(check_native -march || check_native -mcpu)
3096         ;;
3097     esac
3098
3099     test "${cpu:-host}" = host &&
3100         die "--cpu=host not supported with compiler $cc"
3101 fi
3102
3103 # Deal with common $arch aliases
3104 case "$arch" in
3105     aarch64|arm64)
3106         arch="aarch64"
3107     ;;
3108     arm*)
3109         arch="arm"
3110     ;;
3111     mips*|IP*)
3112         arch="mips"
3113     ;;
3114     parisc*|hppa*)
3115         arch="parisc"
3116     ;;
3117     "Power Macintosh"|ppc*|powerpc*)
3118         arch="ppc"
3119     ;;
3120     s390|s390x)
3121         arch="s390"
3122     ;;
3123     sh4|sh)
3124         arch="sh4"
3125     ;;
3126     sun4u|sparc*)
3127         arch="sparc"
3128     ;;
3129     tilegx|tile-gx)
3130         arch="tilegx"
3131     ;;
3132     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3133         arch="x86"
3134     ;;
3135 esac
3136
3137 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3138 enable $arch
3139
3140 # Add processor-specific flags
3141 if enabled aarch64; then
3142
3143     case $cpu in
3144         armv*)
3145             cpuflags="-march=$cpu"
3146         ;;
3147         *)
3148             cpuflags="-mcpu=$cpu"
3149         ;;
3150     esac
3151
3152 elif enabled alpha; then
3153
3154     cpuflags="-mcpu=$cpu"
3155
3156 elif enabled arm; then
3157
3158     check_arm_arch() {
3159         check_cpp_condition stddef.h \
3160             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3161             $cpuflags
3162     }
3163
3164     probe_arm_arch() {
3165         if   check_arm_arch 4;        then echo armv4;
3166         elif check_arm_arch 4T;       then echo armv4t;
3167         elif check_arm_arch 5;        then echo armv5;
3168         elif check_arm_arch 5E;       then echo armv5e;
3169         elif check_arm_arch 5T;       then echo armv5t;
3170         elif check_arm_arch 5TE;      then echo armv5te;
3171         elif check_arm_arch 5TEJ;     then echo armv5te;
3172         elif check_arm_arch 6;        then echo armv6;
3173         elif check_arm_arch 6J;       then echo armv6j;
3174         elif check_arm_arch 6K;       then echo armv6k;
3175         elif check_arm_arch 6Z;       then echo armv6z;
3176         elif check_arm_arch 6ZK;      then echo armv6zk;
3177         elif check_arm_arch 6T2;      then echo armv6t2;
3178         elif check_arm_arch 7;        then echo armv7;
3179         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3180         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3181         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3182         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3183         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3184         fi
3185     }
3186
3187     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3188
3189     case $cpu in
3190         armv*)
3191             cpuflags="-march=$cpu"
3192             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3193         ;;
3194         *)
3195             cpuflags="-mcpu=$cpu"
3196             case $cpu in
3197                 cortex-a*)                               subarch=armv7a  ;;
3198                 cortex-r*)                               subarch=armv7r  ;;
3199                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3200                 arm11*)                                  subarch=armv6   ;;
3201                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3202                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3203                 *)                             subarch=$(probe_arm_arch) ;;
3204             esac
3205         ;;
3206     esac
3207
3208     case "$subarch" in
3209         armv5t*)    enable fast_clz                ;;
3210         armv[6-8]*) enable fast_clz fast_unaligned ;;
3211     esac
3212
3213 elif enabled avr32; then
3214
3215     case $cpu in
3216         ap7[02]0[0-2])
3217             subarch="avr32_ap"
3218             cpuflags="-mpart=$cpu"
3219         ;;
3220         ap)
3221             subarch="avr32_ap"
3222             cpuflags="-march=$cpu"
3223         ;;
3224         uc3[ab]*)
3225             subarch="avr32_uc"
3226             cpuflags="-mcpu=$cpu"
3227         ;;
3228         uc)
3229             subarch="avr32_uc"
3230             cpuflags="-march=$cpu"
3231         ;;
3232     esac
3233
3234 elif enabled bfin; then
3235
3236     cpuflags="-mcpu=$cpu"
3237
3238 elif enabled mips; then
3239
3240     cpuflags="-march=$cpu"
3241
3242 elif enabled ppc; then
3243
3244     disable ldbrx
3245
3246     case $(tolower $cpu) in
3247         601|ppc601|powerpc601)
3248             cpuflags="-mcpu=601"
3249             disable altivec
3250         ;;
3251         603*|ppc603*|powerpc603*)
3252             cpuflags="-mcpu=603"
3253             disable altivec
3254         ;;
3255         604*|ppc604*|powerpc604*)
3256             cpuflags="-mcpu=604"
3257             disable altivec
3258         ;;
3259         g3|75*|ppc75*|powerpc75*)
3260             cpuflags="-mcpu=750"
3261             disable altivec
3262         ;;
3263         g4|745*|ppc745*|powerpc745*)
3264             cpuflags="-mcpu=7450"
3265         ;;
3266         74*|ppc74*|powerpc74*)
3267             cpuflags="-mcpu=7400"
3268         ;;
3269         g5|970|ppc970|powerpc970)
3270             cpuflags="-mcpu=970"
3271         ;;
3272         power[3-7]*)
3273             cpuflags="-mcpu=$cpu"
3274         ;;
3275         cell)
3276             cpuflags="-mcpu=cell"
3277             enable ldbrx
3278         ;;
3279         e500mc)
3280             cpuflags="-mcpu=e500mc"
3281             disable altivec
3282         ;;
3283         e500v2)
3284             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3285             disable altivec
3286             disable dcbzl
3287         ;;
3288         e500)
3289             cpuflags="-mcpu=8540 -mhard-float"
3290             disable altivec
3291             disable dcbzl
3292         ;;
3293     esac
3294
3295 elif enabled sparc; then
3296
3297     case $cpu in
3298         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3299             cpuflags="-mcpu=$cpu"
3300         ;;
3301         ultrasparc*|niagara[234])
3302             cpuflags="-mcpu=$cpu"
3303         ;;
3304     esac
3305
3306 elif enabled x86; then
3307
3308     case $cpu in
3309         i[345]86|pentium)
3310             cpuflags="-march=$cpu"
3311             disable i686
3312             disable mmx
3313         ;;
3314         # targets that do NOT support nopl and conditional mov (cmov)
3315         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3316             cpuflags="-march=$cpu"
3317             disable i686
3318         ;;
3319         # targets that do support nopl and conditional mov (cmov)
3320         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3321             cpuflags="-march=$cpu"
3322             enable i686
3323             enable fast_cmov
3324         ;;
3325         # targets that do support conditional mov but on which it's slow
3326         pentium4|pentium4m|prescott|nocona)
3327             cpuflags="-march=$cpu"
3328             enable i686
3329             disable fast_cmov
3330         ;;
3331     esac
3332
3333 fi
3334
3335 if [ "$cpu" != generic ]; then
3336     add_cflags  $cpuflags
3337     add_asflags $cpuflags
3338 fi
3339
3340 # compiler sanity check
3341 check_exec <<EOF
3342 int main(void){ return 0; }
3343 EOF
3344 if test "$?" != 0; then
3345     echo "$cc is unable to create an executable file."
3346     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3347         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3348         echo "Only do this if you know what cross compiling means."
3349     fi
3350     die "C compiler test failed."
3351 fi
3352
3353 add_cppflags -D_ISOC99_SOURCE
3354 check_cflags -std=c99
3355 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3356 #include <stdlib.h>
3357 EOF
3358 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3359 #include <stdlib.h>
3360 EOF
3361
3362 add_host_cppflags -D_ISOC99_SOURCE
3363 check_host_cflags -std=c99
3364 check_host_cflags -Wall
3365 check_host_cflags -O3
3366
3367 check_64bit(){
3368     arch32=$1
3369     arch64=$2
3370     expr=$3
3371     check_code cc "" "int test[2*($expr) - 1]" &&
3372         subarch=$arch64 || subarch=$arch32
3373 }
3374
3375 case "$arch" in
3376     aarch64|alpha|ia64)
3377         spic=$shared
3378     ;;
3379     mips)
3380         check_64bit mips mips64 '_MIPS_SIM > 1'
3381         spic=$shared
3382     ;;
3383     parisc)
3384         check_64bit parisc parisc64 'sizeof(void *) > 4'
3385         spic=$shared
3386     ;;
3387     ppc)
3388         check_64bit ppc ppc64 'sizeof(void *) > 4'
3389         spic=$shared
3390     ;;
3391     s390)
3392         check_64bit s390 s390x 'sizeof(void *) > 4'
3393         spic=$shared
3394     ;;
3395     sparc)
3396         check_64bit sparc sparc64 'sizeof(void *) > 4'
3397         spic=$shared
3398     ;;
3399     x86)
3400         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3401         if test "$subarch" = "x86_64"; then
3402             spic=$shared
3403         fi
3404     ;;
3405 esac
3406
3407 enable $subarch
3408 enabled spic && enable_weak pic
3409
3410 # OS specific
3411 case $target_os in
3412     aix)
3413         SHFLAGS=-shared
3414         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3415         enabled shared && add_ldflags -Wl,-brtl
3416         ;;
3417     android)
3418         disable symver
3419         enable section_data_rel_ro
3420         SLIB_INSTALL_NAME='$(SLIBNAME)'
3421         SLIB_INSTALL_LINKS=
3422         # soname not set on purpose
3423         SHFLAGS=-shared
3424         ;;
3425     haiku)
3426         prefix_default="/boot/common"
3427         network_extralibs="-lnetwork"
3428         host_libs=
3429         ;;
3430     sunos)
3431         SHFLAGS='-shared -Wl,-h,$$(@F)'
3432         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3433         network_extralibs="-lsocket -lnsl"
3434         # When using suncc to build, the Solaris linker will mark
3435         # an executable with each instruction set encountered by
3436         # the Solaris assembler.  As our libraries contain their own
3437         # guards for processor-specific code, instead suppress
3438         # generation of the HWCAPS ELF section on Solaris x86 only.
3439         enabled_all suncc x86 &&
3440             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3441             add_ldflags -Wl,-M,mapfile
3442         nm_default='nm -P -g'
3443         ;;
3444     netbsd)
3445         disable symver
3446         oss_indev_extralibs="-lossaudio"
3447         oss_outdev_extralibs="-lossaudio"
3448         ;;
3449     openbsd|bitrig)
3450         disable symver
3451         SHFLAGS='-shared'
3452         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3453         SLIB_INSTALL_LINKS=
3454         oss_indev_extralibs="-lossaudio"
3455         oss_outdev_extralibs="-lossaudio"
3456         ;;
3457     dragonfly)
3458         disable symver
3459         ;;
3460     freebsd)
3461         ;;
3462     bsd/os)
3463         add_extralibs -lpoll -lgnugetopt
3464         ;;
3465     darwin)
3466         enabled ppc && add_asflags -force_cpusubtype_ALL
3467         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3468         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3469         add_ldflags -Wl,-dynamic,-search_paths_first
3470         SLIBSUF=".dylib"
3471         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3472         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3473         objformat="macho"
3474         enabled x86_64 && objformat="macho64"
3475         enabled_any pic shared ||
3476             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3477         ;;
3478     mingw32*)
3479         if test $target_os = "mingw32ce"; then
3480             disable network
3481         else
3482             target_os=mingw32
3483         fi
3484         LIBTARGET=i386
3485         if enabled x86_64; then
3486             LIBTARGET="i386:x86-64"
3487         elif enabled arm; then
3488             LIBTARGET=arm-wince
3489         fi
3490         check_ldflags -Wl,--nxcompat
3491         check_ldflags -Wl,--dynamicbase
3492         shlibdir_default="$bindir_default"
3493         SLIBPREF=""
3494         SLIBSUF=".dll"
3495         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3496         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3497         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3498         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3499         SLIB_INSTALL_LINKS=
3500         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3501         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3502         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3503         objformat="win32"
3504         dlltool="${cross_prefix}dlltool"
3505         ranlib=:
3506         enable dos_paths
3507         ;;
3508     win32|win64)
3509         disable symver
3510         if enabled shared; then
3511             # Link to the import library instead of the normal static library
3512             # for shared libs.
3513             LD_LIB='%.lib'
3514             # Cannot build both shared and static libs with MSVC or icl.
3515             disable static
3516         fi
3517         shlibdir_default="$bindir_default"
3518         SLIBPREF=""
3519         SLIBSUF=".dll"
3520         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3521         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3522         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3523         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3524         SLIB_INSTALL_LINKS=
3525         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3526         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3527         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3528         objformat="win32"
3529         ranlib=:
3530         enable dos_paths
3531         ;;
3532     cygwin*)
3533         target_os=cygwin
3534         shlibdir_default="$bindir_default"
3535         SLIBPREF="cyg"
3536         SLIBSUF=".dll"
3537         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3538         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3539         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3540         SLIB_INSTALL_LINKS=
3541         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3542         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3543         objformat="win32"
3544         enable dos_paths
3545         ;;
3546     *-dos|freedos|opendos)
3547         network_extralibs="-lsocket"
3548         objformat="coff"
3549         enable dos_paths
3550         add_cppflags -U__STRICT_ANSI__
3551         ;;
3552     linux)
3553         enable dv1394
3554         enable section_data_rel_ro
3555         ;;
3556     irix*)
3557         target_os=irix
3558         ranlib="echo ignoring ranlib"
3559         ;;
3560     os/2*)
3561         ln_s="cp -f"
3562         objformat="aout"
3563         add_cppflags -D_GNU_SOURCE
3564         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3565         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3566         LIBSUF="_s.a"
3567         SLIBPREF=""
3568         SLIBSUF=".dll"
3569         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3570         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3571         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3572             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3573             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3574             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3575             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3576             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3577         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3578             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3579         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3580         enable dos_paths
3581         ;;
3582     gnu/kfreebsd)
3583         add_cppflags -D_BSD_SOURCE
3584         ;;
3585     gnu)
3586         ;;
3587     qnx)
3588         add_cppflags -D_QNX_SOURCE
3589         network_extralibs="-lsocket"
3590         ;;
3591     symbian)
3592         SLIBSUF=".dll"
3593         enable dos_paths
3594         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3595         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3596         add_ldflags -Wl,--target1-abs,--no-undefined \
3597                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3598                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3599         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3600                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3601                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3602         ;;
3603     osf1)
3604         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3605         ;;
3606     minix)
3607         ;;
3608     plan9)
3609         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3610                      -D_REENTRANT_SOURCE        \
3611                      -D_RESEARCH_SOURCE         \
3612                      -DFD_SETSIZE=96            \
3613                      -DHAVE_SOCK_OPTS
3614         add_compat strtod.o strtod=avpriv_strtod
3615         network_extralibs='-lbsd'
3616         exeobjs=compat/plan9/main.o
3617         cp_f='cp'
3618         ;;
3619     none)
3620         ;;
3621     *)
3622         die "Unknown OS '$target_os'."
3623         ;;
3624 esac
3625
3626 # determine libc flavour
3627
3628 probe_libc(){
3629     pfx=$1
3630     pfx_no_=${pfx%_}
3631     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3632     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3633         eval ${pfx}libc_type=uclibc
3634         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3635     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3636         eval ${pfx}libc_type=glibc
3637         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3638     # MinGW headers can be installed on Cygwin, so check for newlib first.
3639     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3640         eval ${pfx}libc_type=newlib
3641         add_${pfx}cppflags -U__STRICT_ANSI__
3642     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3643     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3644         eval ${pfx}libc_type=mingw64
3645         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3646         eval test \$${pfx_no_}cc_type = "gcc" &&
3647             add_${pfx}cppflags -D__printf__=__gnu_printf__
3648     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3649          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3650         eval ${pfx}libc_type=mingw32
3651         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3652             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3653             die "ERROR: MinGW32 runtime version must be >= 3.15."
3654         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3655         eval test \$${pfx_no_}cc_type = "gcc" &&
3656             add_${pfx}cppflags -D__printf__=__gnu_printf__
3657     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3658         eval ${pfx}libc_type=msvcrt
3659         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3660         # 0x601 by default unless something else is set by the user.
3661         # This can easily lead to us detecting functions only present
3662         # in such new versions and producing binaries requiring windows 7.0.
3663         # Therefore explicitly set the default to XP unless the user has
3664         # set something else on the command line.
3665         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3666             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3667     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3668         eval ${pfx}libc_type=klibc
3669     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3670         eval ${pfx}libc_type=bionic
3671     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3672         eval ${pfx}libc_type=solaris
3673         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3674     else
3675         eval ${pfx}libc_type=default
3676         add_${pfx}cppflags -D_DEFAULT_SOURCE
3677     fi
3678 }
3679
3680 probe_libc
3681 test -n "$libc_type" && enable libc_$libc_type
3682 probe_libc host_
3683 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3684
3685 case $libc_type in
3686     bionic)
3687         add_compat strtod.o strtod=avpriv_strtod
3688         ;;
3689     msvcrt)
3690         add_compat strtod.o strtod=avpriv_strtod
3691         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3692                                      _snprintf=avpriv_snprintf  \
3693                                      vsnprintf=avpriv_vsnprintf
3694         ;;
3695 esac
3696
3697 # hacks for compiler/libc/os combinations
3698
3699 if enabled_all tms470 libc_glibc; then
3700     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3701     add_cppflags -D__USER_LABEL_PREFIX__=
3702     add_cppflags -D__builtin_memset=memset
3703     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3704     add_cflags   -pds=48    # incompatible redefinition of macro
3705 fi
3706
3707 if enabled_all ccc libc_glibc; then
3708     add_ldflags -Wl,-z,now  # calls to libots crash without this
3709 fi
3710
3711 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3712     add_cppflags '-I\$(SRC_PATH)/compat/float'
3713
3714 esc(){
3715     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3716 }
3717
3718 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3719
3720 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3721
3722 set_default $PATHS_LIST
3723 set_default nm
3724
3725 # we need to build at least one lib type
3726 if ! enabled_any static shared; then
3727     cat <<EOF
3728 At least one library type must be built.
3729 Specify --enable-static to build the static libraries or --enable-shared to
3730 build the shared libraries as well. To only build the shared libraries specify
3731 --disable-static in addition to --enable-shared.
3732 EOF
3733     exit 1;
3734 fi
3735
3736 die_license_disabled() {
3737     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3738 }
3739
3740 die_license_disabled gpl libcdio
3741 die_license_disabled gpl libx264
3742 die_license_disabled gpl libx265
3743 die_license_disabled gpl libxavs
3744 die_license_disabled gpl libxvid
3745 die_license_disabled gpl x11grab
3746
3747 die_license_disabled nonfree libfaac
3748 die_license_disabled nonfree libfdk_aac
3749 die_license_disabled nonfree openssl
3750
3751 die_license_disabled version3 libopencore_amrnb
3752 die_license_disabled version3 libopencore_amrwb
3753 die_license_disabled version3 libvo_aacenc
3754 die_license_disabled version3 libvo_amrwbenc
3755
3756 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3757
3758 disabled optimizations || check_cflags -fomit-frame-pointer
3759
3760 enable_weak_pic() {
3761     disabled pic && return
3762     enable pic
3763     add_cppflags -DPIC
3764     case "$target_os" in
3765     mingw*|cygwin*)
3766         ;;
3767     *)
3768         add_cflags -fPIC
3769         ;;
3770     esac
3771     add_asflags  -fPIC
3772 }
3773
3774 enabled pic && enable_weak_pic
3775
3776 check_cc <<EOF || die "Symbol mangling check failed."
3777 int ff_extern;
3778 EOF
3779 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3780 extern_prefix=${sym%%ff_extern*}
3781
3782 check_cc <<EOF && enable_weak inline_asm
3783 void foo(void) { __asm__ volatile ("" ::); }
3784 EOF
3785
3786 _restrict=
3787 for restrict_keyword in restrict __restrict__ __restrict; do
3788     check_cc <<EOF && _restrict=$restrict_keyword && break
3789 void foo(char * $restrict_keyword p);
3790 EOF
3791 done
3792
3793 check_cc <<EOF && enable pragma_deprecated
3794 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3795 EOF
3796
3797 check_cc <<EOF && enable attribute_packed
3798 struct { int x; } __attribute__((packed)) x;
3799 EOF
3800
3801 check_cc <<EOF && enable attribute_may_alias
3802 union { int x; } __attribute__((may_alias)) x;
3803 EOF
3804
3805 check_cc <<EOF || die "endian test failed"
3806 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3807 EOF
3808 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3809
3810 check_gas() {
3811     log "check_gas using '$as' as AS"
3812     # :vararg is used on aarch64, arm and ppc altivec
3813     check_as <<EOF || return 1
3814 .macro m n, y:vararg=0
3815 \n: .int \y
3816 .endm
3817 m x
3818 EOF
3819     # .altmacro is only used in arm asm
3820     ! enabled arm || check_as <<EOF || return 1
3821 .altmacro
3822 EOF
3823     enable gnu_as
3824     return 0
3825 }
3826
3827 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
3828     nogas=:
3829     enabled_any arm aarch64 && nogas=die
3830     enabled_all ppc altivec && nogas=warn
3831     as_noop=-v
3832
3833     case $as_type in
3834         arm*) gaspp_as_type=armasm; as_noop=-h ;;
3835         gcc)  gaspp_as_type=gas ;;
3836         *)    gaspp_as_type=$as_type ;;
3837     esac
3838
3839     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
3840
3841     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
3842         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
3843
3844     if ! check_gas ; then
3845         as=${gas:=$as}
3846         check_gas || \
3847             $nogas "GNU assembler not found, install/update gas-preprocessor"
3848     fi
3849
3850     check_as <<EOF && enable as_func
3851 .func test
3852 .endfunc
3853 EOF
3854 fi
3855
3856 check_inline_asm inline_asm_labels '"1:\n"'
3857
3858 if enabled aarch64; then
3859     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3860     # internal assembler in clang 3.3 does not support this instruction
3861     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3862     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3863
3864     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3865
3866 elif enabled alpha; then
3867
3868     check_cflags -mieee
3869
3870 elif enabled arm; then
3871
3872     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3873     enabled thumb && check_cflags -mthumb || check_cflags -marm
3874
3875     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3876         enable vfp_args
3877     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3878         case "${cross_prefix:-$cc}" in
3879             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3880             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3881 __asm__ (".eabi_attribute 28, 1");
3882 int main(void) { return 0; }
3883 EOF
3884         esac
3885         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3886     fi
3887
3888     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3889     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3890     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3891     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3892     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3893     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3894
3895     [ $target_os = linux ] || [ $target_os = android ] ||
3896         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3897             $ARCH_EXT_LIST_ARM
3898
3899     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3900
3901     check_as <<EOF && enable as_dn_directive
3902 ra .dn d0.i16
3903 .unreq ra
3904 EOF
3905
3906     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3907
3908 elif enabled mips; then
3909
3910     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3911
3912 elif enabled parisc; then
3913
3914     if enabled gcc; then
3915         case $($cc -dumpversion) in
3916             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3917         esac
3918     fi
3919
3920 elif enabled ppc; then
3921
3922     enable local_aligned_8 local_aligned_16
3923
3924     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3925     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3926     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3927     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3928
3929     # AltiVec flags: The FSF version of GCC differs from the Apple version
3930     if enabled altivec; then
3931         check_cflags -maltivec -mabi=altivec &&
3932         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3933         check_cflags -faltivec
3934
3935         # check if our compiler supports Motorola AltiVec C API
3936         check_cc <<EOF || disable altivec
3937 $inc_altivec_h
3938 int main(void) {
3939     vector signed int v1 = (vector signed int) { 0 };
3940     vector signed int v2 = (vector signed int) { 1 };
3941     v1 = vec_add(v1, v2);
3942     return 0;
3943 }
3944 EOF
3945
3946         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3947     fi
3948
3949 elif enabled x86; then
3950
3951     check_builtin rdtsc    intrin.h   "__rdtsc()"
3952     check_builtin mm_empty mmintrin.h "_mm_empty()"
3953
3954     enable local_aligned_8 local_aligned_16
3955
3956     # check whether EBP is available on x86
3957     # As 'i' is stored on the stack, this program will crash
3958     # if the base pointer is used to access it because the
3959     # base pointer is cleared in the inline assembly code.
3960     check_exec_crash <<EOF && enable ebp_available
3961 volatile int i=0;
3962 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3963 return i;
3964 EOF
3965
3966     # check whether EBX is available on x86
3967     check_inline_asm ebx_available '""::"b"(0)' &&
3968         check_inline_asm ebx_available '"":::"%ebx"'
3969
3970     # check whether xmm clobbers are supported
3971     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3972
3973     # check whether binutils is new enough to compile SSSE3/MMXEXT
3974     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3975     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3976
3977     if ! disabled_any asm mmx yasm; then
3978         if check_cmd $yasmexe --version; then
3979             enabled x86_64 && yasm_extra="-m amd64"
3980             yasm_debug="-g dwarf2"
3981         elif check_cmd nasm -v; then
3982             yasmexe=nasm
3983             yasm_debug="-g -F dwarf"
3984             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3985         fi
3986
3987         YASMFLAGS="-f $objformat $yasm_extra"
3988         enabled pic               && append YASMFLAGS "-DPIC"
3989         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3990         case "$objformat" in
3991             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3992         esac
3993
3994         check_yasm "movbe ecx, [5]" && enable yasm ||
3995             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
3996         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
3997         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
3998         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3999         check_yasm "CPU amdnop" || disable cpunop
4000     fi
4001
4002     case "$cpu" in
4003         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4004             disable fast_clz
4005         ;;
4006     esac
4007
4008 fi
4009
4010 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4011
4012 check_ldflags -Wl,--as-needed
4013
4014 if check_func dlopen; then
4015     ldl=
4016 elif check_func dlopen -ldl; then
4017     ldl=-ldl
4018 fi
4019
4020 if ! disabled network; then
4021     check_func getaddrinfo $network_extralibs
4022     check_func getservbyport $network_extralibs
4023     check_func inet_aton $network_extralibs
4024
4025     check_type netdb.h "struct addrinfo"
4026     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4027     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4028     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4029     check_type poll.h "struct pollfd"
4030     check_type netinet/sctp.h "struct sctp_event_subscribe"
4031     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4032     check_type netinet/in.h "struct sockaddr_in6"
4033     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4034     check_type "sys/types.h sys/socket.h" socklen_t
4035
4036     # Prefer arpa/inet.h over winsock2
4037     if check_header arpa/inet.h ; then
4038         check_func closesocket
4039     elif check_header winsock2.h ; then
4040         check_func_headers winsock2.h closesocket -lws2 &&
4041             network_extralibs="-lws2" ||
4042         { check_func_headers winsock2.h closesocket -lws2_32 &&
4043             network_extralibs="-lws2_32"; } || disable winsock2_h network
4044         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4045
4046         check_type ws2tcpip.h socklen_t
4047         check_type ws2tcpip.h "struct addrinfo"
4048         check_type ws2tcpip.h "struct group_source_req"
4049         check_type ws2tcpip.h "struct ip_mreq_source"
4050         check_type ws2tcpip.h "struct ipv6_mreq"
405