cdc5a8d298ed047df7df67e005967bdaf1c44b01
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89   --enable-rpath           use rpath when linking programs [USE WITH CARE]
90
91 Licensing options:
92   --enable-gpl             allow use of GPL code, the resulting libs
93                            and binaries will be under GPL [no]
94   --enable-version3        upgrade (L)GPL to version 3 [no]
95   --enable-nonfree         allow use of nonfree code, the resulting libs
96                            and binaries will be unredistributable [no]
97
98 Configuration options:
99   --disable-static         do not build static libraries [no]
100   --enable-shared          build shared libraries [no]
101   --enable-small           optimize for size instead of speed
102   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
103   --enable-gray            enable full grayscale support (slower color)
104   --disable-swscale-alpha  disable alpha channel support in swscale
105   --disable-all            disable building components, libraries and programs
106
107 Program options:
108   --disable-programs       do not build command line programs
109   --disable-avconv         disable avconv build
110   --disable-avplay         disable avplay build
111   --disable-avprobe        disable avprobe build
112   --disable-avserver       deprecated, does nothing
113
114 Component options:
115   --disable-doc            do not build documentation
116   --disable-avdevice       disable libavdevice build
117   --disable-avcodec        disable libavcodec build
118   --disable-avformat       disable libavformat build
119   --disable-avutil         disable libavutil build
120   --disable-swscale        disable libswscale build
121   --disable-avfilter       disable video filter support [no]
122   --disable-avresample     disable libavresample build [no]
123   --disable-pthreads       disable pthreads [auto]
124   --disable-w32threads     disable Win32 threads [auto]
125   --disable-network        disable network support [no]
126   --disable-dct            disable DCT code
127   --disable-error-resilience disable error resilience code
128   --disable-lsp            disable LSP code
129   --disable-lzo            disable LZO decoder code
130   --disable-mdct           disable MDCT code
131   --disable-rdft           disable RDFT code
132   --disable-fft            disable FFT code
133   --disable-faan           disable floating point AAN (I)DCT code
134
135 Hardware accelerators:
136   --enable-d3d11va         enable D3D11VA code
137   --enable-dxva2           enable DXVA2 code
138   --enable-vaapi           enable VAAPI code
139   --enable-vda             enable VDA code
140   --enable-vdpau           enable VDPAU code
141
142 Individual component options:
143   --disable-everything     disable all components listed below
144   --disable-encoder=NAME   disable encoder NAME
145   --enable-encoder=NAME    enable encoder NAME
146   --disable-encoders       disable all encoders
147   --disable-decoder=NAME   disable decoder NAME
148   --enable-decoder=NAME    enable decoder NAME
149   --disable-decoders       disable all decoders
150   --disable-hwaccel=NAME   disable hwaccel NAME
151   --enable-hwaccel=NAME    enable hwaccel NAME
152   --disable-hwaccels       disable all hwaccels
153   --disable-muxer=NAME     disable muxer NAME
154   --enable-muxer=NAME      enable muxer NAME
155   --disable-muxers         disable all muxers
156   --disable-demuxer=NAME   disable demuxer NAME
157   --enable-demuxer=NAME    enable demuxer NAME
158   --disable-demuxers       disable all demuxers
159   --enable-parser=NAME     enable parser NAME
160   --disable-parser=NAME    disable parser NAME
161   --disable-parsers        disable all parsers
162   --enable-bsf=NAME        enable bitstream filter NAME
163   --disable-bsf=NAME       disable bitstream filter NAME
164   --disable-bsfs           disable all bitstream filters
165   --enable-protocol=NAME   enable protocol NAME
166   --disable-protocol=NAME  disable protocol NAME
167   --disable-protocols      disable all protocols
168   --enable-indev=NAME      enable input device NAME
169   --disable-indev=NAME     disable input device NAME
170   --disable-indevs         disable input devices
171   --enable-outdev=NAME     enable output device NAME
172   --disable-outdev=NAME    disable output device NAME
173   --disable-outdevs        disable output devices
174   --disable-devices        disable all devices
175   --enable-filter=NAME     enable filter NAME
176   --disable-filter=NAME    disable filter NAME
177   --disable-filters        disable all filters
178
179 External library support:
180   --enable-avisynth        enable reading of AviSynth script files [no]
181   --enable-bzlib           enable bzlib [autodetect]
182   --enable-frei0r          enable frei0r video filtering
183   --enable-gnutls          enable gnutls [no]
184   --enable-libbs2b         enable bs2b DSP library [no]
185   --enable-libcdio         enable audio CD grabbing with libcdio
186   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
187                            and libraw1394 [no]
188   --enable-libdcadec       enable DCA decoding via libdcadec [no]
189   --enable-libfaac         enable AAC encoding via libfaac [no]
190   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
191   --enable-libfreetype     enable libfreetype [no]
192   --enable-libgsm          enable GSM de/encoding via libgsm [no]
193   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
194   --enable-libmfx          enable HW acceleration through libmfx
195   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
196   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
197   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
198   --enable-libopencv       enable video filtering via libopencv [no]
199   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
200   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
201   --enable-libopus         enable Opus de/encoding via libopus [no]
202   --enable-libpulse        enable Pulseaudio input via libpulse [no]
203   --enable-librtmp         enable RTMP[E] support via librtmp [no]
204   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
205   --enable-libspeex        enable Speex de/encoding via libspeex [no]
206   --enable-libtheora       enable Theora encoding via libtheora [no]
207   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
208   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
209   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
210   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
211   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
212   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
213   --enable-libwebp         enable WebP encoding via libwebp [no]
214   --enable-libx264         enable H.264 encoding via x264 [no]
215   --enable-libx265         enable HEVC encoding via x265 [no]
216   --enable-libxavs         enable AVS encoding via xavs [no]
217   --enable-libxcb          enable X11 grabbing using XCB [no]
218   --enable-libxcb-shm      enable X11 grabbing shm communication [auto]
219   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [auto]
220   --enable-libxvid         enable Xvid encoding via xvidcore,
221                            native MPEG-4/Xvid encoder exists [no]
222   --enable-mmal            enable decoding via MMAL [no]
223   --enable-nvenc           enable encoding via NVENC [no]
224   --enable-openssl         enable openssl [no]
225   --enable-x11grab         enable X11 grabbing (legacy) [no]
226   --enable-zlib            enable zlib [autodetect]
227
228 Toolchain options:
229   --arch=ARCH              select architecture [$arch]
230   --cpu=CPU                select the minimum required CPU (affects
231                            instruction selection, may crash on older CPUs)
232   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
233   --enable-cross-compile   assume a cross-compiler is used
234   --sysroot=PATH           root of cross-build tree
235   --sysinclude=PATH        location of cross-build system headers
236   --target-os=OS           compiler targets OS [$target_os]
237   --target-exec=CMD        command to run executables on target
238   --target-path=DIR        path to view of build directory on target
239   --target-samples=DIR     path to samples directory on target
240   --toolchain=NAME         set tool defaults according to NAME
241   --nm=NM                  use nm tool
242   --ar=AR                  use archive tool AR [$ar_default]
243   --as=AS                  use assembler AS [$as_default]
244   --cc=CC                  use C compiler CC [$cc_default]
245   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
246   --ld=LD                  use linker LD
247   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
248   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
249   --host-cc=HOSTCC         use host C compiler HOSTCC
250   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
251   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
252   --host-ld=HOSTLD         use host linker HOSTLD
253   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
254   --host-libs=HLIBS        use libs HLIBS when linking for host
255   --host-os=OS             compiler host OS [$target_os]
256   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
257   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
258   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
259   --extra-libs=ELIBS       add ELIBS [$ELIBS]
260   --extra-version=STRING   version string suffix []
261   --optflags=OPTFLAGS      override optimization-related compiler flags
262   --build-suffix=SUFFIX    library name suffix []
263   --enable-pic             build position-independent code
264   --enable-thumb           compile for Thumb instruction set
265   --enable-lto             use link-time optimization
266
267 Advanced options (experts only):
268   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
269   --disable-symver         disable symbol versioning
270   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
271   --disable-safe-bitstream-reader
272                            disable buffer boundary checking in bitreaders
273                            (faster, but may crash)
274   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
275   --enable-sram            allow use of on-chip SRAM
276
277 Optimization options (experts only):
278   --disable-asm            disable all assembly optimizations
279   --disable-altivec        disable AltiVec optimizations
280   --disable-vsx            disable VSX optimizations
281   --disable-power8         disable POWER8 optimizations
282   --disable-amd3dnow       disable 3DNow! optimizations
283   --disable-amd3dnowext    disable 3DNow! extended optimizations
284   --disable-mmx            disable MMX optimizations
285   --disable-mmxext         disable MMXEXT optimizations
286   --disable-sse            disable SSE optimizations
287   --disable-sse2           disable SSE2 optimizations
288   --disable-sse3           disable SSE3 optimizations
289   --disable-ssse3          disable SSSE3 optimizations
290   --disable-sse4           disable SSE4 optimizations
291   --disable-sse42          disable SSE4.2 optimizations
292   --disable-avx            disable AVX optimizations
293   --disable-xop            disable XOP optimizations
294   --disable-fma3           disable FMA3 optimizations
295   --disable-fma4           disable FMA4 optimizations
296   --disable-avx2           disable AVX2 optimizations
297   --disable-armv5te        disable armv5te optimizations
298   --disable-armv6          disable armv6 optimizations
299   --disable-armv6t2        disable armv6t2 optimizations
300   --disable-vfp            disable VFP optimizations
301   --disable-neon           disable NEON optimizations
302   --disable-inline-asm     disable use of inline assembly
303   --disable-yasm           disable use of nasm/yasm assembly
304
305 Developer options (useful when working on Libav itself):
306   --disable-debug          disable debugging symbols
307   --enable-debug=LEVEL     set the debug level [$debuglevel]
308   --disable-optimizations  disable compiler optimizations
309   --enable-extra-warnings  enable more compiler warnings
310   --samples=PATH           location of test samples for FATE, if not set use
311                            \$LIBAV_SAMPLES at make invocation time.
312   --enable-neon-clobber-test check NEON registers for clobbering (should be
313                            used only for debugging purposes)
314   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
315                            should be used only for debugging purposes)
316   --enable-random          randomly enable/disable components
317   --disable-random
318   --enable-random=LIST     randomly enable/disable specific components or
319   --disable-random=LIST    component groups. LIST is a comma-separated list
320                            of NAME[:PROB] entries where NAME is a component
321                            (group) and PROB the probability associated with
322                            NAME (default 0.5).
323   --random-seed=VALUE      seed value for --enable/disable-random
324   --disable-valgrind-backtrace do not print a backtrace under Valgrind
325                            (only applies to --disable-optimizations builds)
326
327 NOTE: Object files are built at the place where configure is launched.
328 EOF
329   exit 0
330 }
331
332 quotes='""'
333
334 log(){
335     echo "$@" >> $logfile
336 }
337
338 log_file(){
339     log BEGIN $1
340     pr -n -t $1 >> $logfile
341     log END $1
342 }
343
344 echolog(){
345     log "$@"
346     echo "$@"
347 }
348
349 warn(){
350     log "WARNING: $*"
351     WARNINGS="${WARNINGS}WARNING: $*\n"
352 }
353
354 die(){
355     echolog "$@"
356     cat <<EOF
357
358 If you think configure made a mistake, make sure you are using the latest
359 version from Git.  If the latest version fails, report the problem to the
360 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
361 EOF
362     if disabled logging; then
363         cat <<EOF
364 Rerun configure with logging enabled (do not use --disable-logging), and
365 include the log this produces with your report.
366 EOF
367     else
368         cat <<EOF
369 Include the log file "$logfile" produced by configure as this will help
370 solving the problem.
371 EOF
372     fi
373     exit 1
374 }
375
376 # Avoid locale weirdness, besides we really just want to translate ASCII.
377 toupper(){
378     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
379 }
380
381 tolower(){
382     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
383 }
384
385 c_escape(){
386     echo "$*" | sed 's/["\\]/\\\0/g'
387 }
388
389 sh_quote(){
390     v=$(echo "$1" | sed "s/'/'\\\\''/g")
391     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
392     echo "$v"
393 }
394
395 cleanws(){
396     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
397 }
398
399 filter(){
400     pat=$1
401     shift
402     for v; do
403         eval "case $v in $pat) echo $v ;; esac"
404     done
405 }
406
407 filter_out(){
408     pat=$1
409     shift
410     for v; do
411         eval "case $v in $pat) ;; *) echo $v ;; esac"
412     done
413 }
414
415 map(){
416     m=$1
417     shift
418     for v; do eval $m; done
419 }
420
421 add_suffix(){
422     suffix=$1
423     shift
424     for v; do echo ${v}${suffix}; done
425 }
426
427 set_all(){
428     value=$1
429     shift
430     for var in $*; do
431         eval $var=$value
432     done
433 }
434
435 set_weak(){
436     value=$1
437     shift
438     for var; do
439         eval : \${$var:=$value}
440     done
441 }
442
443 sanitize_var_name(){
444     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
445 }
446
447 set_safe(){
448     var=$1
449     shift
450     eval $(sanitize_var_name "$var")='$*'
451 }
452
453 get_safe(){
454     eval echo \$$(sanitize_var_name "$1")
455 }
456
457 pushvar(){
458     for pvar in $*; do
459         eval level=\${${pvar}_level:=0}
460         eval ${pvar}_${level}="\$$pvar"
461         eval ${pvar}_level=$(($level+1))
462     done
463 }
464
465 popvar(){
466     for pvar in $*; do
467         eval level=\${${pvar}_level:-0}
468         test $level = 0 && continue
469         eval level=$(($level-1))
470         eval $pvar="\${${pvar}_${level}}"
471         eval ${pvar}_level=$level
472         eval unset ${pvar}_${level}
473     done
474 }
475
476 enable(){
477     set_all yes $*
478 }
479
480 disable(){
481     set_all no $*
482 }
483
484 enable_weak(){
485     set_weak yes $*
486 }
487
488 disable_weak(){
489     set_weak no $*
490 }
491
492 enable_safe(){
493     for var; do
494         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
495     done
496 }
497
498 disable_safe(){
499     for var; do
500         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
501     done
502 }
503
504 do_enable_deep(){
505     for var; do
506         enabled $var && continue
507         eval sel="\$${var}_select"
508         eval sgs="\$${var}_suggest"
509         pushvar var sgs
510         enable_deep $sel
511         popvar sgs
512         enable_deep_weak $sgs
513         popvar var
514     done
515 }
516
517 enable_deep(){
518     do_enable_deep $*
519     enable $*
520 }
521
522 enable_deep_weak(){
523     for var; do
524         disabled $var && continue
525         pushvar var
526         do_enable_deep $var
527         popvar var
528         enable_weak $var
529     done
530 }
531
532 enabled(){
533     test "${1#!}" = "$1" && op== || op=!=
534     eval test "x\$${1#!}" $op "xyes"
535 }
536
537 disabled(){
538     test "${1#!}" = "$1" && op== || op=!=
539     eval test "x\$${1#!}" $op "xno"
540 }
541
542 enabled_all(){
543     for opt; do
544         enabled $opt || return 1
545     done
546 }
547
548 disabled_all(){
549     for opt; do
550         disabled $opt || return 1
551     done
552 }
553
554 enabled_any(){
555     for opt; do
556         enabled $opt && return 0
557     done
558 }
559
560 disabled_any(){
561     for opt; do
562         disabled $opt && return 0
563     done
564     return 1
565 }
566
567 set_default(){
568     for opt; do
569         eval : \${$opt:=\$${opt}_default}
570     done
571 }
572
573 is_in(){
574     value=$1
575     shift
576     for var in $*; do
577         [ $var = $value ] && return 0
578     done
579     return 1
580 }
581
582 do_check_deps(){
583     for cfg; do
584         cfg="${cfg#!}"
585         enabled ${cfg}_checking && die "Circular dependency for $cfg."
586         disabled ${cfg}_checking && continue
587         enable ${cfg}_checking
588         append allopts $cfg
589
590         eval dep_all="\$${cfg}_deps"
591         eval dep_any="\$${cfg}_deps_any"
592         eval dep_sel="\$${cfg}_select"
593         eval dep_sgs="\$${cfg}_suggest"
594         eval dep_ifa="\$${cfg}_if"
595         eval dep_ifn="\$${cfg}_if_any"
596
597         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
598         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
599         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
600
601         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
602         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
603         enabled_all  $dep_all || disable $cfg
604         enabled_any  $dep_any || disable $cfg
605         disabled_any $dep_sel && disable $cfg
606
607         if enabled $cfg; then
608             enable_deep $dep_sel
609             enable_deep_weak $dep_sgs
610         fi
611
612         disable ${cfg}_checking
613     done
614 }
615
616 check_deps(){
617     unset allopts
618
619     do_check_deps "$@"
620
621     for cfg in $allopts; do
622         enabled $cfg || continue
623         eval dep_extralibs="\$${cfg}_extralibs"
624         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
625     done
626 }
627
628 print_config(){
629     pfx=$1
630     files=$2
631     shift 2
632     map 'eval echo "$v \${$v:-no}"' "$@" |
633     awk "BEGIN { split(\"$files\", files) }
634         {
635             c = \"$pfx\" toupper(\$1);
636             v = \$2;
637             sub(/yes/, 1, v);
638             sub(/no/,  0, v);
639             for (f in files) {
640                 file = files[f];
641                 if (file ~ /\\.h\$/) {
642                     printf(\"#define %s %d\\n\", c, v) >>file;
643                 } else if (file ~ /\\.asm\$/) {
644                     printf(\"%%define %s %d\\n\", c, v) >>file;
645                 } else if (file ~ /\\.mak\$/) {
646                     n = -v ? \"\" : \"!\";
647                     printf(\"%s%s=yes\\n\", n, c) >>file;
648                 }
649             }
650         }"
651 }
652
653 print_enabled(){
654     suf=$1
655     shift
656     for v; do
657         enabled $v && printf "%s\n" ${v%$suf};
658     done
659 }
660
661 append(){
662     var=$1
663     shift
664     eval "$var=\"\$$var $*\""
665 }
666
667 prepend(){
668     var=$1
669     shift
670     eval "$var=\"$* \$$var\""
671 }
672
673 unique(){
674     var=$1
675     uniq_list=""
676     for tok in $(eval echo \$$var); do
677         uniq_list="$(filter_out $tok $uniq_list) $tok"
678     done
679     eval "$var=\"${uniq_list}\""
680 }
681
682 add_cppflags(){
683     append CPPFLAGS "$@"
684 }
685
686 add_cflags(){
687     append CFLAGS $($cflags_filter "$@")
688 }
689
690 add_asflags(){
691     append ASFLAGS $($asflags_filter "$@")
692 }
693
694 add_ldflags(){
695     append LDFLAGS $($ldflags_filter "$@")
696 }
697
698 add_ldexeflags(){
699     append LDEXEFLAGS $($ldflags_filter "$@")
700 }
701
702 add_stripflags(){
703     append STRIPFLAGS "$@"
704 }
705
706 add_extralibs(){
707     prepend extralibs $($ldflags_filter "$@")
708 }
709
710 add_host_cppflags(){
711     append host_cppflags "$@"
712 }
713
714 add_host_cflags(){
715     append host_cflags $($host_cflags_filter "$@")
716 }
717
718 add_host_ldflags(){
719     append host_ldflags $($host_ldflags_filter "$@")
720 }
721
722 add_compat(){
723     append compat_objs $1
724     shift
725     map 'add_cppflags -D$v' "$@"
726 }
727
728 check_cmd(){
729     log "$@"
730     "$@" >> $logfile 2>&1
731 }
732
733 cc_o(){
734     eval printf '%s\\n' $CC_O
735 }
736
737 cc_e(){
738     eval printf '%s\\n' $CC_E
739 }
740
741 check_cc(){
742     log check_cc "$@"
743     cat > $TMPC
744     log_file $TMPC
745     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
746 }
747
748 check_cpp(){
749     log check_cpp "$@"
750     cat > $TMPC
751     log_file $TMPC
752     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
753 }
754
755 as_o(){
756     eval printf '%s\\n' $AS_O
757 }
758
759 check_as(){
760     log check_as "$@"
761     cat > $TMPS
762     log_file $TMPS
763     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
764 }
765
766 check_inline_asm(){
767     log check_inline_asm "$@"
768     name="$1"
769     code="$2"
770     shift 2
771     disable $name
772     check_cc "$@" <<EOF && enable $name
773 void foo(void){ __asm__ volatile($code); }
774 EOF
775 }
776
777 check_insn(){
778     log check_insn "$@"
779     check_inline_asm ${1}_inline "\"$2\""
780     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
781 }
782
783 check_yasm(){
784     log check_yasm "$@"
785     echo "$1" > $TMPS
786     log_file $TMPS
787     shift 1
788     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
789 }
790
791 ld_o(){
792     eval printf '%s\\n' $LD_O
793 }
794
795 check_ld(){
796     log check_ld "$@"
797     flags=$(filter_out '-l*' "$@")
798     libs=$(filter '-l*' "$@")
799     check_cc $($cflags_filter $flags) || return
800     flags=$($ldflags_filter $flags)
801     libs=$($ldflags_filter $libs)
802     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
803 }
804
805 print_include(){
806     hdr=$1
807     test "${hdr%.h}" = "${hdr}" &&
808         echo "#include $hdr"    ||
809         echo "#include <$hdr>"
810 }
811
812 check_code(){
813     log check_code "$@"
814     check=$1
815     headers=$2
816     code=$3
817     shift 3
818     {
819         for hdr in $headers; do
820             print_include $hdr
821         done
822         echo "int main(void) { $code; return 0; }"
823     } | check_$check "$@"
824 }
825
826 check_cppflags(){
827     log check_cppflags "$@"
828     check_cc "$@" <<EOF && append CPPFLAGS "$@"
829 int x;
830 EOF
831 }
832
833 test_cflags(){
834     log test_cflags "$@"
835     set -- $($cflags_filter "$@")
836     check_cc "$@" <<EOF
837 int x;
838 EOF
839 }
840
841 check_cflags(){
842     log check_cflags "$@"
843     test_cflags "$@" && add_cflags "$@"
844 }
845
846 test_ldflags(){
847     log test_ldflags "$@"
848     check_ld "$@" <<EOF
849 int main(void){ return 0; }
850 EOF
851 }
852
853 check_ldflags(){
854     log check_ldflags "$@"
855     test_ldflags "$@" && add_ldflags "$@"
856 }
857
858 test_stripflags(){
859     log test_stripflags "$@"
860     # call check_cc to get a fresh TMPO
861     check_cc <<EOF
862 int main(void) { return 0; }
863 EOF
864     check_cmd $strip $STRIPFLAGS "$@" $TMPO
865 }
866
867 check_stripflags(){
868     log check_stripflags "$@"
869     test_stripflags "$@" && add_stripflags "$@"
870 }
871
872 check_header(){
873     log check_header "$@"
874     header=$1
875     shift
876     disable_safe $header
877     check_cpp "$@" <<EOF && enable_safe $header
878 #include <$header>
879 int x;
880 EOF
881 }
882
883 check_func(){
884     log check_func "$@"
885     func=$1
886     shift
887     disable $func
888     check_ld "$@" <<EOF && enable $func
889 extern int $func();
890 int main(void){ $func(); }
891 EOF
892 }
893
894 check_mathfunc(){
895     log check_mathfunc "$@"
896     func=$1
897     narg=$2
898     shift 2
899     test $narg = 2 && args="f, g" || args="f"
900     disable $func
901     check_ld "$@" <<EOF && enable $func
902 #include <math.h>
903 float foo(float f, float g) { return $func($args); }
904 int main(void){ return 0; }
905 EOF
906 }
907
908 check_func_headers(){
909     log check_func_headers "$@"
910     headers=$1
911     funcs=$2
912     shift 2
913     {
914         for hdr in $headers; do
915             print_include $hdr
916         done
917         for func in $funcs; do
918             echo "long check_$func(void) { return (long) $func; }"
919         done
920         echo "int main(void) { return 0; }"
921     } | check_ld "$@" && enable $funcs && enable_safe $headers
922 }
923
924 check_cpp_condition(){
925     log check_cpp_condition "$@"
926     header=$1
927     condition=$2
928     shift 2
929     check_cpp "$@" <<EOF
930 #include <$header>
931 #if !($condition)
932 #error "unsatisfied condition: $condition"
933 #endif
934 EOF
935 }
936
937 check_lib(){
938     log check_lib "$@"
939     header="$1"
940     func="$2"
941     shift 2
942     check_header $header && check_func $func "$@" && add_extralibs "$@"
943 }
944
945 check_lib2(){
946     log check_lib2 "$@"
947     headers="$1"
948     funcs="$2"
949     shift 2
950     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
951 }
952
953 check_pkg_config(){
954     log check_pkg_config "$@"
955     pkg="$1"
956     headers="$2"
957     funcs="$3"
958     shift 3
959     check_cmd $pkg_config --exists --print-errors $pkg || return
960     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
961     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
962     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
963         set_safe ${pkg}_cflags $pkg_cflags   &&
964         set_safe ${pkg}_libs   $pkg_libs
965 }
966
967 check_exec(){
968     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
969 }
970
971 check_exec_crash(){
972     code=$(cat)
973
974     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
975     # are safe but may not be available everywhere.  Thus we use
976     # raise(SIGTERM) instead.  The check is run in a subshell so we
977     # can redirect the "Terminated" message from the shell.  SIGBUS
978     # is not defined by standard C so it is used conditionally.
979
980     (check_exec "$@") >> $logfile 2>&1 <<EOF
981 #include <signal.h>
982 static void sighandler(int sig){
983     raise(SIGTERM);
984 }
985 int foo(void){
986     $code
987 }
988 int (*func_ptr)(void) = foo;
989 int main(void){
990     signal(SIGILL, sighandler);
991     signal(SIGFPE, sighandler);
992     signal(SIGSEGV, sighandler);
993 #ifdef SIGBUS
994     signal(SIGBUS, sighandler);
995 #endif
996     return func_ptr();
997 }
998 EOF
999 }
1000
1001 check_type(){
1002     log check_type "$@"
1003     headers=$1
1004     type=$2
1005     shift 2
1006     disable_safe "$type"
1007     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1008 }
1009
1010 check_struct(){
1011     log check_struct "$@"
1012     headers=$1
1013     struct=$2
1014     member=$3
1015     shift 3
1016     disable_safe "${struct}_${member}"
1017     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1018         enable_safe "${struct}_${member}"
1019 }
1020
1021 check_builtin(){
1022     log check_builtin "$@"
1023     name=$1
1024     headers=$2
1025     builtin=$3
1026     shift 3
1027     disable "$name"
1028     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1029 }
1030
1031 check_compile_assert(){
1032     log check_compile_assert "$@"
1033     name=$1
1034     headers=$2
1035     condition=$3
1036     shift 3
1037     disable "$name"
1038     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1039 }
1040
1041 require(){
1042     name="$1"
1043     header="$2"
1044     func="$3"
1045     shift 3
1046     check_lib $header $func "$@" || die "ERROR: $name not found"
1047 }
1048
1049 require2(){
1050     name="$1"
1051     headers="$2"
1052     func="$3"
1053     shift 3
1054     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1055 }
1056
1057 require_pkg_config(){
1058     pkg="$1"
1059     check_pkg_config "$@" || die "ERROR: $pkg not found"
1060     add_cflags    $(get_safe ${pkg}_cflags)
1061     add_extralibs $(get_safe ${pkg}_libs)
1062 }
1063
1064 hostcc_e(){
1065     eval printf '%s\\n' $HOSTCC_E
1066 }
1067
1068 hostcc_o(){
1069     eval printf '%s\\n' $HOSTCC_O
1070 }
1071
1072 check_host_cc(){
1073     log check_host_cc "$@"
1074     cat > $TMPC
1075     log_file $TMPC
1076     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1077 }
1078
1079 check_host_cpp(){
1080     log check_host_cpp "$@"
1081     cat > $TMPC
1082     log_file $TMPC
1083     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1084 }
1085
1086 check_host_cppflags(){
1087     log check_host_cppflags "$@"
1088     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1089 int x;
1090 EOF
1091 }
1092
1093 check_host_cflags(){
1094     log check_host_cflags "$@"
1095     set -- $($host_cflags_filter "$@")
1096     check_host_cc "$@" <<EOF && append host_cflags "$@"
1097 int x;
1098 EOF
1099 }
1100
1101 check_host_cpp_condition(){
1102     log check_host_cpp_condition "$@"
1103     header=$1
1104     condition=$2
1105     shift 2
1106     check_host_cpp "$@" <<EOF
1107 #include <$header>
1108 #if !($condition)
1109 #error "unsatisfied condition: $condition"
1110 #endif
1111 EOF
1112 }
1113
1114 apply(){
1115     file=$1
1116     shift
1117     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1118 }
1119
1120 cp_if_changed(){
1121     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1122     mkdir -p "$(dirname $2)"
1123     $cp_f "$1" "$2"
1124 }
1125
1126 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1127 # system-dependent things.
1128
1129 COMPONENT_LIST="
1130     bsfs
1131     decoders
1132     demuxers
1133     encoders
1134     filters
1135     hwaccels
1136     indevs
1137     muxers
1138     outdevs
1139     parsers
1140     protocols
1141 "
1142
1143 EXAMPLE_LIST="
1144     avcodec_example
1145     filter_audio_example
1146     metadata_example
1147     output_example
1148     qsvdec_example
1149     transcode_aac_example
1150 "
1151
1152 EXTERNAL_LIBRARY_LIST="
1153     avisynth
1154     bzlib
1155     frei0r
1156     gnutls
1157     libbs2b
1158     libcdio
1159     libdc1394
1160     libdcadec
1161     libfaac
1162     libfdk_aac
1163     libfontconfig
1164     libfreetype
1165     libgsm
1166     libilbc
1167     libmfx
1168     libmp3lame
1169     libopencore_amrnb
1170     libopencore_amrwb
1171     libopencv
1172     libopenh264
1173     libopenjpeg
1174     libopus
1175     libpulse
1176     librtmp
1177     libschroedinger
1178     libspeex
1179     libtheora
1180     libtwolame
1181     libvo_aacenc
1182     libvo_amrwbenc
1183     libvorbis
1184     libvpx
1185     libwavpack
1186     libwebp
1187     libx264
1188     libx265
1189     libxavs
1190     libxcb
1191     libxcb_shm
1192     libxcb_xfixes
1193     libxvid
1194     mmal
1195     nvenc
1196     openssl
1197     x11grab
1198     zlib
1199 "
1200
1201 FEATURE_LIST="
1202     gray
1203     hardcoded_tables
1204     runtime_cpudetect
1205     safe_bitstream_reader
1206     shared
1207     small
1208     sram
1209     static
1210     swscale_alpha
1211 "
1212
1213 HWACCEL_LIST="
1214     d3d11va
1215     dxva2
1216     vaapi
1217     vda
1218     vdpau
1219 "
1220
1221 LIBRARY_LIST="
1222     avcodec
1223     avdevice
1224     avfilter
1225     avformat
1226     avresample
1227     avutil
1228     swscale
1229 "
1230
1231 LICENSE_LIST="
1232     gpl
1233     nonfree
1234     version3
1235 "
1236
1237 PROGRAM_LIST="
1238     avconv
1239     avplay
1240     avprobe
1241 "
1242
1243 SUBSYSTEM_LIST="
1244     dct
1245     doc
1246     error_resilience
1247     faan
1248     fft
1249     lsp
1250     lzo
1251     mdct
1252     network
1253     rdft
1254 "
1255
1256 CONFIG_LIST="
1257     $COMPONENT_LIST
1258     $EXAMPLE_LIST
1259     $EXTERNAL_LIBRARY_LIST
1260     $FEATURE_LIST
1261     $HWACCEL_LIST
1262     $LICENSE_LIST
1263     $LIBRARY_LIST
1264     $PROGRAM_LIST
1265     $SUBSYSTEM_LIST
1266     memalign_hack
1267     neon_clobber_test
1268     pic
1269     pod2man
1270     texi2html
1271     thumb
1272     valgrind_backtrace
1273     xmm_clobber_test
1274 "
1275
1276 THREADS_LIST="
1277     pthreads
1278     w32threads
1279 "
1280
1281 ATOMICS_LIST="
1282     atomics_gcc
1283     atomics_suncc
1284     atomics_win32
1285 "
1286
1287 ARCH_LIST="
1288     aarch64
1289     alpha
1290     arm
1291     avr32
1292     avr32_ap
1293     avr32_uc
1294     bfin
1295     ia64
1296     m68k
1297     mips
1298     mips64
1299     parisc
1300     ppc
1301     ppc64
1302     s390
1303     sh4
1304     sparc
1305     sparc64
1306     tilegx
1307     tilepro
1308     tomi
1309     x86
1310     x86_32
1311     x86_64
1312 "
1313
1314 ARCH_EXT_LIST_ARM="
1315     armv5te
1316     armv6
1317     armv6t2
1318     armv8
1319     neon
1320     vfp
1321     vfpv3
1322 "
1323
1324 ARCH_EXT_LIST_X86_SIMD="
1325     amd3dnow
1326     amd3dnowext
1327     avx
1328     avx2
1329     fma3
1330     fma4
1331     mmx
1332     mmxext
1333     sse
1334     sse2
1335     sse3
1336     sse4
1337     sse42
1338     ssse3
1339     xop
1340 "
1341
1342 ARCH_EXT_LIST_PPC="
1343     altivec
1344     dcbzl
1345     ldbrx
1346     power8
1347     ppc4xx
1348     vsx
1349 "
1350
1351 ARCH_EXT_LIST_X86="
1352     $ARCH_EXT_LIST_X86_SIMD
1353     cpunop
1354     i686
1355 "
1356
1357 ARCH_EXT_LIST="
1358     $ARCH_EXT_LIST_ARM
1359     $ARCH_EXT_LIST_PPC
1360     $ARCH_EXT_LIST_X86
1361     loongson
1362     vis
1363 "
1364
1365 ARCH_FEATURES="
1366     aligned_stack
1367     fast_64bit
1368     fast_clz
1369     fast_cmov
1370     local_aligned_8
1371     local_aligned_16
1372     simd_align_16
1373 "
1374
1375 BUILTIN_LIST="
1376     atomic_cas_ptr
1377     machine_rw_barrier
1378     MemoryBarrier
1379     mm_empty
1380     rdtsc
1381     sync_val_compare_and_swap
1382 "
1383 HAVE_LIST_CMDLINE="
1384     inline_asm
1385     symver
1386     yasm
1387 "
1388
1389 HAVE_LIST_PUB="
1390     bigendian
1391     fast_unaligned
1392 "
1393
1394 HEADERS_LIST="
1395     alsa_asoundlib_h
1396     altivec_h
1397     arpa_inet_h
1398     cdio_paranoia_h
1399     cdio_paranoia_paranoia_h
1400     dev_bktr_ioctl_bt848_h
1401     dev_bktr_ioctl_meteor_h
1402     dev_ic_bt8xx_h
1403     dev_video_bktr_ioctl_bt848_h
1404     dev_video_meteor_ioctl_meteor_h
1405     direct_h
1406     dlfcn_h
1407     d3d11_h
1408     dxva_h
1409     gsm_h
1410     io_h
1411     mach_mach_time_h
1412     machine_ioctl_bt848_h
1413     machine_ioctl_meteor_h
1414     malloc_h
1415     poll_h
1416     sndio_h
1417     soundcard_h
1418     sys_mman_h
1419     sys_param_h
1420     sys_resource_h
1421     sys_select_h
1422     sys_soundcard_h
1423     sys_time_h
1424     sys_un_h
1425     sys_videoio_h
1426     unistd_h
1427     valgrind_valgrind_h
1428     windows_h
1429     winsock2_h
1430 "
1431
1432 INTRINSICS_LIST="
1433     intrinsics_neon
1434 "
1435
1436 MATH_FUNCS="
1437     atanf
1438     atan2f
1439     cbrtf
1440     cosf
1441     exp2
1442     exp2f
1443     expf
1444     isinf
1445     isnan
1446     ldexpf
1447     llrint
1448     llrintf
1449     log2
1450     log2f
1451     log10f
1452     lrint
1453     lrintf
1454     powf
1455     rint
1456     round
1457     roundf
1458     sinf
1459     trunc
1460     truncf
1461 "
1462
1463 SYSTEM_FUNCS="
1464     aligned_malloc
1465     clock_gettime
1466     closesocket
1467     CommandLineToArgvW
1468     CoTaskMemFree
1469     CryptGenRandom
1470     dlopen
1471     fcntl
1472     flt_lim
1473     fork
1474     getaddrinfo
1475     gethrtime
1476     getopt
1477     GetProcessAffinityMask
1478     GetProcessMemoryInfo
1479     GetProcessTimes
1480     getrusage
1481     getservbyport
1482     GetSystemTimeAsFileTime
1483     gettimeofday
1484     gmtime_r
1485     inet_aton
1486     isatty
1487     jack_port_get_latency_range
1488     LoadLibrary
1489     localtime_r
1490     mach_absolute_time
1491     MapViewOfFile
1492     memalign
1493     mkstemp
1494     mmap
1495     mprotect
1496     nanosleep
1497     posix_memalign
1498     sched_getaffinity
1499     SetConsoleTextAttribute
1500     setmode
1501     setrlimit
1502     Sleep
1503     strerror_r
1504     sysconf
1505     sysctl
1506     usleep
1507     VirtualAlloc
1508 "
1509
1510 TOOLCHAIN_FEATURES="
1511     as_dn_directive
1512     as_func
1513     as_object_arch
1514     asm_mod_q
1515     attribute_may_alias
1516     attribute_packed
1517     ebp_available
1518     ebx_available
1519     gnu_as
1520     ibm_asm
1521     inline_asm_labels
1522     pragma_deprecated
1523     symver_asm_label
1524     symver_gnu_asm
1525     vfp_args
1526     xform_asm
1527     xmm_clobbers
1528 "
1529
1530 TYPES_LIST="
1531     CONDITION_VARIABLE_Ptr
1532     DXVA_PicParams_HEVC
1533     ID3D11VideoDecoder
1534     socklen_t
1535     struct_addrinfo
1536     struct_group_source_req
1537     struct_ip_mreq_source
1538     struct_ipv6_mreq
1539     struct_pollfd
1540     struct_rusage_ru_maxrss
1541     struct_sockaddr_in6
1542     struct_sockaddr_sa_len
1543     struct_sockaddr_storage
1544     struct_v4l2_frmivalenum_discrete
1545 "
1546
1547 HAVE_LIST="
1548     $ARCH_EXT_LIST
1549     $(add_suffix _external $ARCH_EXT_LIST)
1550     $(add_suffix _inline   $ARCH_EXT_LIST)
1551     $ARCH_FEATURES
1552     $ATOMICS_LIST
1553     $BUILTIN_LIST
1554     $HAVE_LIST_CMDLINE
1555     $HAVE_LIST_PUB
1556     $HEADERS_LIST
1557     $INTRINSICS_LIST
1558     $MATH_FUNCS
1559     $SYSTEM_FUNCS
1560     $THREADS_LIST
1561     $TOOLCHAIN_FEATURES
1562     $TYPES_LIST
1563     atomics_native
1564     dos_paths
1565     d3d11_cobj
1566     d3d11va_lib
1567     dxva2_lib
1568     libc_msvcrt
1569     libdc1394_1
1570     libdc1394_2
1571     sdl
1572     section_data_rel_ro
1573     threads
1574     vaapi_x11
1575     vdpau_x11
1576     xlib
1577 "
1578
1579 # options emitted with CONFIG_ prefix but not available on the command line
1580 CONFIG_EXTRA="
1581     aandcttables
1582     ac3dsp
1583     audio_frame_queue
1584     audiodsp
1585     blockdsp
1586     bswapdsp
1587     cabac
1588     dvprofile
1589     faandct
1590     faanidct
1591     fdctdsp
1592     fmtconvert
1593     gcrypt
1594     gmp
1595     golomb
1596     gplv3
1597     h263dsp
1598     h264chroma
1599     h264dsp
1600     h264pred
1601     h264qpel
1602     hpeldsp
1603     huffman
1604     huffyuvdsp
1605     huffyuvencdsp
1606     idctdsp
1607     iirfilter
1608     imdct15
1609     intrax8
1610     jpegtables
1611     lgplv3
1612     lpc
1613     me_cmp
1614     mpeg_er
1615     mpegaudio
1616     mpegaudiodsp
1617     mpegvideo
1618     mpegvideoenc
1619     pixblockdsp
1620     qpeldsp
1621     qsv
1622     qsvdec
1623     qsvenc
1624     rangecoder
1625     riffdec
1626     riffenc
1627     rtpdec
1628     rtpenc_chain
1629     sinewin
1630     startcode
1631     tpeldsp
1632     videodsp
1633     vp3dsp
1634     wma_freqs
1635 "
1636
1637 CMDLINE_SELECT="
1638     $ARCH_EXT_LIST
1639     $CONFIG_LIST
1640     $HAVE_LIST_CMDLINE
1641     $THREADS_LIST
1642     asm
1643     cross_compile
1644     debug
1645     extra_warnings
1646     logging
1647     lto
1648     optimizations
1649     rpath
1650 "
1651
1652 PATHS_LIST="
1653     bindir
1654     datadir
1655     docdir
1656     incdir
1657     libdir
1658     mandir
1659     prefix
1660     shlibdir
1661 "
1662
1663 CMDLINE_SET="
1664     $PATHS_LIST
1665     ar
1666     arch
1667     as
1668     build_suffix
1669     cc
1670     cpu
1671     cross_prefix
1672     dep_cc
1673     extra_version
1674     host_cc
1675     host_cflags
1676     host_ld
1677     host_ldflags
1678     host_libs
1679     host_os
1680     ld
1681     logfile
1682     malloc_prefix
1683     nm
1684     optflags
1685     pkg_config
1686     pkg_config_flags
1687     random_seed
1688     samples
1689     sysinclude
1690     sysroot
1691     target_exec
1692     target_os
1693     target_path
1694     target_samples
1695     toolchain
1696 "
1697
1698 CMDLINE_APPEND="
1699     extra_cflags
1700     host_cppflags
1701 "
1702
1703 # code dependency declarations
1704
1705 # architecture extensions
1706
1707 armv5te_deps="arm"
1708 armv6_deps="arm"
1709 armv6t2_deps="arm"
1710 armv8_deps="aarch64"
1711 neon_deps_any="aarch64 arm"
1712 intrinsics_neon_deps="neon"
1713 vfp_deps_any="aarch64 arm"
1714 vfpv3_deps="vfp"
1715
1716 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1717
1718 altivec_deps="ppc"
1719 ppc4xx_deps="ppc"
1720 vsx_deps="altivec"
1721 power8_deps="vsx"
1722
1723 cpunop_deps="i686"
1724 x86_64_select="i686"
1725 x86_64_suggest="fast_cmov"
1726
1727 amd3dnow_deps="mmx"
1728 amd3dnowext_deps="amd3dnow"
1729 i686_deps="x86"
1730 mmx_deps="x86"
1731 mmxext_deps="mmx"
1732 sse_deps="mmxext"
1733 sse2_deps="sse"
1734 sse3_deps="sse2"
1735 ssse3_deps="sse3"
1736 sse4_deps="ssse3"
1737 sse42_deps="sse4"
1738 avx_deps="sse42"
1739 xop_deps="avx"
1740 fma3_deps="avx"
1741 fma4_deps="avx"
1742 avx2_deps="avx"
1743
1744 mmx_external_deps="yasm"
1745 mmx_inline_deps="inline_asm"
1746 mmx_suggest="mmx_external mmx_inline"
1747
1748 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1749     eval dep=\$${ext}_deps
1750     eval ${ext}_external_deps='"${dep}_external"'
1751     eval ${ext}_inline_deps='"${dep}_inline"'
1752     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1753 done
1754
1755 aligned_stack_if_any="aarch64 ppc x86"
1756 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1757 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1758 fast_unaligned_if_any="aarch64 ppc x86"
1759 simd_align_16_if_any="altivec neon sse"
1760
1761 # system capabilities
1762 symver_if_any="symver_asm_label symver_gnu_asm"
1763 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1764
1765 # threading support
1766 atomics_gcc_if="sync_val_compare_and_swap"
1767 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1768 atomics_win32_if="MemoryBarrier"
1769 atomics_native_if_any="$ATOMICS_LIST"
1770 w32threads_deps="atomics_native"
1771 threads_if_any="$THREADS_LIST"
1772
1773 # subsystems
1774 dct_select="rdft"
1775 error_resilience_select="me_cmp"
1776 faandct_deps="faan fdctdsp"
1777 faanidct_deps="faan idctdsp"
1778 intrax8_select="error_resilience"
1779 mdct_select="fft"
1780 rdft_select="fft"
1781 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1782 mpeg_er_select="error_resilience"
1783 mpegaudio_select="mpegaudiodsp"
1784 mpegaudiodsp_select="dct"
1785 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp videodsp"
1786 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1787 nvenc_deps_any="dlopen LoadLibrary"
1788 nvenc_extralibs='$ldl'
1789 qsvdec_select="qsv"
1790 qsvenc_select="qsv"
1791
1792 # decoders / encoders
1793 aac_decoder_select="imdct15 mdct sinewin"
1794 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1795 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1796 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1797 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1798 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1799 aic_decoder_select="golomb idctdsp"
1800 alac_encoder_select="lpc"
1801 als_decoder_select="bswapdsp"
1802 amrnb_decoder_select="lsp"
1803 amrwb_decoder_select="lsp"
1804 amv_decoder_select="sp5x_decoder"
1805 ape_decoder_select="bswapdsp"
1806 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1807 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1808 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1809 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1810 atrac1_decoder_select="mdct sinewin"
1811 atrac3_decoder_select="mdct"
1812 atrac3p_decoder_select="mdct sinewin"
1813 bink_decoder_select="blockdsp hpeldsp"
1814 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1815 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1816 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1817 cllc_decoder_select="bswapdsp"
1818 comfortnoise_encoder_select="lpc"
1819 cook_decoder_select="audiodsp mdct sinewin"
1820 cscd_decoder_select="lzo"
1821 cscd_decoder_suggest="zlib"
1822 dca_decoder_select="fmtconvert mdct"
1823 dnxhd_decoder_select="blockdsp idctdsp"
1824 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1825 dvvideo_decoder_select="dvprofile idctdsp"
1826 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1827 dxa_decoder_deps="zlib"
1828 eac3_decoder_select="ac3_decoder"
1829 eac3_encoder_select="ac3_encoder"
1830 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1831 eatgq_decoder_select="aandcttables idctdsp"
1832 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
1833 exr_decoder_deps="zlib"
1834 ffv1_decoder_select="golomb rangecoder"
1835 ffv1_encoder_select="rangecoder"
1836 ffvhuff_decoder_select="huffyuv_decoder"
1837 ffvhuff_encoder_select="huffyuv_encoder"
1838 fic_decoder_select="golomb"
1839 flac_decoder_select="golomb"
1840 flac_encoder_select="bswapdsp golomb lpc"
1841 flashsv_decoder_deps="zlib"
1842 flashsv_encoder_deps="zlib"
1843 flashsv2_decoder_deps="zlib"
1844 flv_decoder_select="h263_decoder"
1845 flv_encoder_select="h263_encoder"
1846 fourxm_decoder_select="blockdsp bswapdsp"
1847 fraps_decoder_select="bswapdsp huffman"
1848 g2m_decoder_deps="zlib"
1849 g2m_decoder_select="blockdsp idctdsp jpegtables"
1850 h261_decoder_select="mpeg_er mpegvideo"
1851 h261_encoder_select="aandcttables mpegvideoenc"
1852 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1853 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1854 h263i_decoder_select="h263_decoder"
1855 h263p_encoder_select="h263_encoder"
1856 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
1857 h264_decoder_suggest="error_resilience"
1858 h264_nvenc_encoder_deps="nvenc"
1859 h264_qsv_decoder_deps="libmfx"
1860 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
1861 h264_qsv_encoder_deps="libmfx"
1862 h264_qsv_encoder_select="qsvenc"
1863 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1864 hevc_nvenc_encoder_deps="nvenc"
1865 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1866 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1867 iac_decoder_select="imc_decoder"
1868 imc_decoder_select="bswapdsp fft mdct sinewin"
1869 indeo3_decoder_select="hpeldsp"
1870 interplay_video_decoder_select="hpeldsp"
1871 jpegls_decoder_select="golomb mjpeg_decoder"
1872 jpegls_encoder_select="golomb"
1873 jv_decoder_select="blockdsp"
1874 lagarith_decoder_select="huffyuvdsp"
1875 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
1876 loco_decoder_select="golomb"
1877 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1878 metasound_decoder_select="lsp mdct sinewin"
1879 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1880 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
1881 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
1882 mjpegb_decoder_select="mjpeg_decoder"
1883 mlp_decoder_select="mlp_parser"
1884 motionpixels_decoder_select="bswapdsp"
1885 mp1_decoder_select="mpegaudio"
1886 mp1float_decoder_select="mpegaudio"
1887 mp2_decoder_select="mpegaudio"
1888 mp2float_decoder_select="mpegaudio"
1889 mp3_decoder_select="mpegaudio"
1890 mp3adu_decoder_select="mpegaudio"
1891 mp3adufloat_decoder_select="mpegaudio"
1892 mp3float_decoder_select="mpegaudio"
1893 mp3on4_decoder_select="mpegaudio"
1894 mp3on4float_decoder_select="mpegaudio"
1895 mpc7_decoder_select="bswapdsp mpegaudiodsp"
1896 mpc8_decoder_select="mpegaudiodsp"
1897 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1898 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1899 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
1900 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1901 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
1902 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1903 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1904 mpeg4_encoder_select="h263_encoder"
1905 msmpeg4v1_decoder_select="h263_decoder"
1906 msmpeg4v2_decoder_select="h263_decoder"
1907 msmpeg4v2_encoder_select="h263_encoder"
1908 msmpeg4v3_decoder_select="h263_decoder"
1909 msmpeg4v3_encoder_select="h263_encoder"
1910 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
1911 mxpeg_decoder_select="mjpeg_decoder"
1912 nellymoser_decoder_select="mdct sinewin"
1913 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1914 nuv_decoder_select="idctdsp lzo"
1915 on2avc_decoder_select="mdct"
1916 opus_decoder_deps="avresample"
1917 opus_decoder_select="imdct15"
1918 png_decoder_deps="zlib"
1919 png_encoder_deps="zlib"
1920 png_encoder_select="huffyuvencdsp"
1921 prores_decoder_select="idctdsp"
1922 prores_encoder_select="fdctdsp"
1923 qcelp_decoder_select="lsp"
1924 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1925 ra_144_encoder_select="audio_frame_queue lpc"
1926 ralf_decoder_select="golomb"
1927 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1928 rv10_encoder_select="h263_encoder"
1929 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
1930 rv20_encoder_select="h263_encoder"
1931 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1932 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
1933 shorten_decoder_select="golomb"
1934 sipr_decoder_select="lsp"
1935 sp5x_decoder_select="mjpeg_decoder"
1936 svq1_decoder_select="hpeldsp"
1937 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
1938 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
1939 svq3_decoder_suggest="zlib"
1940 tak_decoder_select="audiodsp"
1941 tdsc_decoder_deps="zlib"
1942 tdsc_decoder_select="mjpeg_decoder"
1943 theora_decoder_select="vp3_decoder"
1944 thp_decoder_select="mjpeg_decoder"
1945 tiff_decoder_suggest="zlib"
1946 tiff_encoder_suggest="zlib"
1947 truehd_decoder_select="mlp_decoder"
1948 truemotion2_decoder_select="bswapdsp"
1949 truespeech_decoder_select="bswapdsp"
1950 tscc_decoder_deps="zlib"
1951 twinvq_decoder_select="mdct lsp sinewin"
1952 utvideo_decoder_select="bswapdsp"
1953 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
1954 vble_decoder_select="huffyuvdsp"
1955 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
1956 vc1image_decoder_select="vc1_decoder"
1957 vorbis_decoder_select="mdct"
1958 vorbis_encoder_select="mdct"
1959 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1960 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1961 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1962 vp6a_decoder_select="vp6_decoder"
1963 vp6f_decoder_select="vp6_decoder"
1964 vp7_decoder_select="h264pred videodsp"
1965 vp8_decoder_select="h264pred videodsp"
1966 vp9_decoder_select="videodsp"
1967 webp_decoder_select="vp8_decoder"
1968 wmapro_decoder_select="mdct sinewin wma_freqs"
1969 wmav1_decoder_select="mdct sinewin wma_freqs"
1970 wmav1_encoder_select="mdct sinewin wma_freqs"
1971 wmav2_decoder_select="mdct sinewin wma_freqs"
1972 wmav2_encoder_select="mdct sinewin wma_freqs"
1973 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1974 wmv1_decoder_select="h263_decoder"
1975 wmv1_encoder_select="h263_encoder"
1976 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
1977 wmv2_encoder_select="h263_encoder"
1978 wmv3_decoder_select="vc1_decoder"
1979 wmv3image_decoder_select="wmv3_decoder"
1980 zerocodec_decoder_deps="zlib"
1981 zlib_decoder_deps="zlib"
1982 zlib_encoder_deps="zlib"
1983 zmbv_decoder_deps="zlib"
1984 zmbv_encoder_deps="zlib"
1985
1986 # hardware accelerators
1987 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
1988 dxva2_deps="dxva2api_h"
1989 vaapi_deps="va_va_h"
1990 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1991 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1992 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1993
1994 h263_vaapi_hwaccel_deps="vaapi"
1995 h263_vaapi_hwaccel_select="h263_decoder"
1996 h263_vdpau_hwaccel_deps="vdpau"
1997 h263_vdpau_hwaccel_select="h263_decoder"
1998 h264_d3d11va_hwaccel_deps="d3d11va"
1999 h264_d3d11va_hwaccel_select="h264_decoder"
2000 h264_dxva2_hwaccel_deps="dxva2"
2001 h264_dxva2_hwaccel_select="h264_decoder"
2002 h264_mmal_decoder_deps="mmal"
2003 h264_mmal_hwaccel_deps="mmal"
2004 h264_mmal_decoder_select="h264_decoder"
2005 h264_mmal_encoder_deps="mmal"
2006 h264_qsv_hwaccel_deps="libmfx"
2007 h264_vaapi_hwaccel_deps="vaapi"
2008 h264_vaapi_hwaccel_select="h264_decoder"
2009 h264_vda_hwaccel_deps="vda"
2010 h264_vda_hwaccel_select="h264_decoder"
2011 h264_vda_old_hwaccel_deps="vda"
2012 h264_vda_old_hwaccel_select="h264_decoder"
2013 h264_vdpau_hwaccel_deps="vdpau"
2014 h264_vdpau_hwaccel_select="h264_decoder"
2015 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2016 hevc_d3d11va_hwaccel_select="hevc_decoder"
2017 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2018 hevc_dxva2_hwaccel_select="hevc_decoder"
2019 mpeg1_vdpau_hwaccel_deps="vdpau"
2020 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2021 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2022 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2023 mpeg2_dxva2_hwaccel_deps="dxva2"
2024 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2025 mpeg2_vaapi_hwaccel_deps="vaapi"
2026 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2027 mpeg2_vdpau_hwaccel_deps="vdpau"
2028 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2029 mpeg4_vaapi_hwaccel_deps="vaapi"
2030 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2031 mpeg4_vdpau_hwaccel_deps="vdpau"
2032 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2033 vc1_d3d11va_hwaccel_deps="d3d11va"
2034 vc1_d3d11va_hwaccel_select="vc1_decoder"
2035 vc1_dxva2_hwaccel_deps="dxva2"
2036 vc1_dxva2_hwaccel_select="vc1_decoder"
2037 vc1_vaapi_hwaccel_deps="vaapi"
2038 vc1_vaapi_hwaccel_select="vc1_decoder"
2039 vc1_vdpau_hwaccel_deps="vdpau"
2040 vc1_vdpau_hwaccel_select="vc1_decoder"
2041 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2042 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2043 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2044 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2045
2046 # parsers
2047 h264_parser_select="h264_decoder"
2048 mpegvideo_parser_select="mpegvideo"
2049 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2050 vc1_parser_select="mpegvideo startcode vc1_decoder"
2051
2052 # bitstream_filters
2053 mjpeg2jpeg_bsf_select="jpegtables"
2054
2055 # external libraries
2056 libdcadec_decoder_deps="libdcadec"
2057 libfaac_encoder_deps="libfaac"
2058 libfaac_encoder_select="audio_frame_queue"
2059 libfdk_aac_decoder_deps="libfdk_aac"
2060 libfdk_aac_encoder_deps="libfdk_aac"
2061 libfdk_aac_encoder_select="audio_frame_queue"
2062 libgsm_decoder_deps="libgsm"
2063 libgsm_encoder_deps="libgsm"
2064 libgsm_ms_decoder_deps="libgsm"
2065 libgsm_ms_encoder_deps="libgsm"
2066 libilbc_decoder_deps="libilbc"
2067 libilbc_encoder_deps="libilbc"
2068 libmp3lame_encoder_deps="libmp3lame"
2069 libmp3lame_encoder_select="audio_frame_queue"
2070 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2071 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2072 libopencore_amrnb_encoder_select="audio_frame_queue"
2073 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2074 libopenh264_encoder_deps="libopenh264"
2075 libopenjpeg_decoder_deps="libopenjpeg"
2076 libopenjpeg_encoder_deps="libopenjpeg"
2077 libopus_decoder_deps="libopus"
2078 libopus_encoder_deps="libopus"
2079 libopus_encoder_select="audio_frame_queue"
2080 libschroedinger_decoder_deps="libschroedinger"
2081 libschroedinger_encoder_deps="libschroedinger"
2082 libspeex_decoder_deps="libspeex"
2083 libspeex_encoder_deps="libspeex"
2084 libspeex_encoder_select="audio_frame_queue"
2085 libtheora_encoder_deps="libtheora"
2086 libtwolame_encoder_deps="libtwolame"
2087 libvo_aacenc_encoder_deps="libvo_aacenc"
2088 libvo_aacenc_encoder_select="audio_frame_queue"
2089 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2090 libvorbis_encoder_deps="libvorbis"
2091 libvorbis_encoder_select="audio_frame_queue"
2092 libvpx_vp8_decoder_deps="libvpx"
2093 libvpx_vp8_encoder_deps="libvpx"
2094 libvpx_vp9_decoder_deps="libvpx"
2095 libvpx_vp9_encoder_deps="libvpx"
2096 libwavpack_encoder_deps="libwavpack"
2097 libwebp_encoder_deps="libwebp"
2098 libx264_encoder_deps="libx264"
2099 libx265_encoder_deps="libx265"
2100 libxavs_encoder_deps="libxavs"
2101 libxvid_encoder_deps="libxvid"
2102
2103 # demuxers / muxers
2104 ac3_demuxer_select="ac3_parser"
2105 asf_demuxer_select="riffdec"
2106 asf_muxer_select="riffenc"
2107 asf_stream_muxer_select="asf_muxer"
2108 avi_demuxer_select="riffdec"
2109 avi_muxer_select="riffenc"
2110 avisynth_demuxer_deps="avisynth"
2111 avisynth_demuxer_select="riffdec"
2112 caf_demuxer_select="riffdec"
2113 dash_muxer_select="mp4_muxer"
2114 dirac_demuxer_select="dirac_parser"
2115 dv_demuxer_select="dvprofile"
2116 dv_muxer_select="dvprofile"
2117 dxa_demuxer_select="riffdec"
2118 eac3_demuxer_select="ac3_parser"
2119 f4v_muxer_select="mov_muxer"
2120 flac_demuxer_select="flac_parser"
2121 hds_muxer_select="flv_muxer"
2122 hls_muxer_select="mpegts_muxer"
2123 ipod_muxer_select="mov_muxer"
2124 ismv_muxer_select="mov_muxer"
2125 matroska_audio_muxer_select="matroska_muxer"
2126 matroska_demuxer_select="riffdec"
2127 matroska_demuxer_suggest="bzlib lzo zlib"
2128 matroska_muxer_select="riffenc"
2129 mmf_muxer_select="riffenc"
2130 mov_demuxer_select="riffdec"
2131 mov_demuxer_suggest="zlib"
2132 mov_muxer_select="riffenc rtpenc_chain"
2133 mp3_demuxer_select="mpegaudio_parser"
2134 mp4_muxer_select="mov_muxer"
2135 mpegts_muxer_select="adts_muxer latm_muxer"
2136 mpegtsraw_demuxer_select="mpegts_demuxer"
2137 mxf_d10_muxer_select="mxf_muxer"
2138 nut_muxer_select="riffenc"
2139 nuv_demuxer_select="riffdec"
2140 oga_muxer_select="ogg_muxer"
2141 ogg_demuxer_select="golomb"
2142 opus_muxer_select="ogg_muxer"
2143 psp_muxer_select="mov_muxer"
2144 rtp_demuxer_select="sdp_demuxer"
2145 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2146 rtsp_demuxer_select="http_protocol rtpdec"
2147 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2148 sap_demuxer_select="sdp_demuxer"
2149 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2150 sdp_demuxer_select="rtpdec"
2151 smoothstreaming_muxer_select="ismv_muxer"
2152 spdif_muxer_select="aac_parser"
2153 spx_muxer_select="ogg_muxer"
2154 tak_demuxer_select="tak_parser"
2155 tg2_muxer_select="mov_muxer"
2156 tgp_muxer_select="mov_muxer"
2157 w64_demuxer_select="wav_demuxer"
2158 wav_demuxer_select="riffdec"
2159 wav_muxer_select="riffenc"
2160 webm_muxer_select="riffenc"
2161 wtv_demuxer_select="riffdec"
2162 xmv_demuxer_select="riffdec"
2163 xwma_demuxer_select="riffdec"
2164
2165 # indevs / outdevs
2166 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2167 alsa_outdev_deps="alsa_asoundlib_h"
2168 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2169 dv1394_indev_deps="dv1394"
2170 dv1394_indev_select="dv_demuxer"
2171 fbdev_indev_deps="linux_fb_h"
2172 jack_indev_deps="jack_jack_h pthreads"
2173 libcdio_indev_deps="libcdio"
2174 libdc1394_indev_deps="libdc1394"
2175 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2176 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2177 pulse_indev_deps="libpulse"
2178 sndio_indev_deps="sndio_h"
2179 sndio_outdev_deps="sndio_h"
2180 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2181 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2182 vfwcap_indev_extralibs="-lavicap32"
2183 x11grab_indev_deps="x11grab"
2184 x11grab_xcb_indev_deps="libxcb"
2185
2186 # protocols
2187 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2188 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2189 ffrtmpcrypt_protocol_select="tcp_protocol"
2190 ffrtmphttp_protocol_deps="!librtmp_protocol"
2191 ffrtmphttp_protocol_select="http_protocol"
2192 gopher_protocol_select="network"
2193 http_protocol_select="tcp_protocol"
2194 httpproxy_protocol_select="tcp_protocol"
2195 https_protocol_select="tls_protocol"
2196 icecast_protocol_select="http_protocol"
2197 librtmp_protocol_deps="librtmp"
2198 librtmpe_protocol_deps="librtmp"
2199 librtmps_protocol_deps="librtmp"
2200 librtmpt_protocol_deps="librtmp"
2201 librtmpte_protocol_deps="librtmp"
2202 mmsh_protocol_select="http_protocol"
2203 mmst_protocol_select="network"
2204 rtmp_protocol_deps="!librtmp_protocol"
2205 rtmp_protocol_select="tcp_protocol"
2206 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2207 rtmps_protocol_deps="!librtmp_protocol"
2208 rtmps_protocol_select="tls_protocol"
2209 rtmpt_protocol_select="ffrtmphttp_protocol"
2210 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2211 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2212 rtp_protocol_select="udp_protocol"
2213 sctp_protocol_deps="struct_sctp_event_subscribe"
2214 sctp_protocol_select="network"
2215 srtp_protocol_select="rtp_protocol"
2216 tcp_protocol_select="network"
2217 tls_gnutls_protocol_deps="gnutls"
2218 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2219 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2220 tls_protocol_select="tcp_protocol"
2221 udp_protocol_select="network"
2222 unix_protocol_deps="sys_un_h"
2223 unix_protocol_select="network"
2224
2225 # filters
2226 blackframe_filter_deps="gpl"
2227 boxblur_filter_deps="gpl"
2228 bs2b_filter_deps="libbs2b"
2229 cropdetect_filter_deps="gpl"
2230 delogo_filter_deps="gpl"
2231 drawtext_filter_deps="libfreetype"
2232 frei0r_filter_deps="frei0r dlopen"
2233 frei0r_filter_extralibs='$ldl'
2234 frei0r_src_filter_deps="frei0r dlopen"
2235 frei0r_src_filter_extralibs='$ldl'
2236 hqdn3d_filter_deps="gpl"
2237 interlace_filter_deps="gpl"
2238 ocv_filter_deps="libopencv"
2239 resample_filter_deps="avresample"
2240 scale_filter_deps="swscale"
2241
2242 # examples
2243 avcodec_example_deps="avcodec avutil"
2244 filter_audio_example_deps="avfilter avutil"
2245 metadata_example_deps="avformat avutil"
2246 output_example_deps="avcodec avformat avutil swscale"
2247 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2248 transcode_aac_example_deps="avcodec avformat avresample"
2249
2250 # libraries, in linking order
2251 avcodec_deps="avutil"
2252 avdevice_deps="avformat avcodec avutil"
2253 avfilter_deps="avutil"
2254 avformat_deps="avcodec avutil"
2255 avresample_deps="avutil"
2256 swscale_deps="avutil"
2257
2258 # programs
2259 avconv_deps="avcodec avfilter avformat avresample swscale"
2260 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2261                fps_filter null_filter resample_filter scale_filter
2262                setpts_filter trim_filter"
2263 avplay_deps="avcodec avformat avresample swscale sdl"
2264 avplay_libs='$sdl_libs'
2265 avplay_select="rdft transpose_filter hflip_filter vflip_filter"
2266 avprobe_deps="avcodec avformat"
2267
2268 # documentation
2269 pod2man_deps="doc"
2270 texi2html_deps="doc"
2271
2272 # default parameters
2273
2274 logfile="config.log"
2275
2276 # installation paths
2277 prefix_default="/usr/local"
2278 bindir_default='${prefix}/bin'
2279 datadir_default='${prefix}/share/avconv'
2280 docdir_default='${prefix}/share/doc/libav'
2281 incdir_default='${prefix}/include'
2282 libdir_default='${prefix}/lib'
2283 mandir_default='${prefix}/share/man'
2284 shlibdir_default="$libdir_default"
2285
2286 # toolchain
2287 ar_default="ar"
2288 cc_default="gcc"
2289 host_cc_default="gcc"
2290 cp_f="cp -f"
2291 ln_s="ln -s -f"
2292 nm_default="nm -g"
2293 objformat="elf"
2294 pkg_config_default=pkg-config
2295 ranlib="ranlib"
2296 strip="strip"
2297 yasmexe="yasm"
2298
2299 # machine
2300 arch_default=$(uname -m)
2301 cpu="generic"
2302 intrinsics="none"
2303
2304 # OS
2305 target_os_default=$(tolower $(uname -s))
2306 host_os=$target_os_default
2307
2308 # configurable options
2309 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2310
2311 enable asm
2312 enable debug
2313 enable doc
2314 enable faan faandct faanidct
2315 enable optimizations
2316 enable safe_bitstream_reader
2317 enable static
2318 enable swscale_alpha
2319 enable valgrind_backtrace
2320
2321 # By default, enable only those hwaccels that have no external dependencies.
2322 enable d3d11va dxva2 vda vdpau
2323
2324 # build settings
2325 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2326 LIBPREF="lib"
2327 LIBSUF=".a"
2328 FULLNAME='$(NAME)$(BUILDSUF)'
2329 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2330 SLIBPREF="lib"
2331 SLIBSUF=".so"
2332 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2333 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2334 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2335 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2336 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2337 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2338
2339 asflags_filter=echo
2340 cflags_filter=echo
2341 ldflags_filter=echo
2342
2343 AS_C='-c'
2344 AS_O='-o $@'
2345 CC_C='-c'
2346 CC_E='-E -o $@'
2347 CC_O='-o $@'
2348 LD_O='-o $@'
2349 LD_LIB='-l%'
2350 LD_PATH='-L'
2351 HOSTCC_C='-c'
2352 HOSTCC_E='-E -o $@'
2353 HOSTCC_O='-o $@'
2354 HOSTLD_O='-o $@'
2355
2356 host_libs='-lm'
2357 host_cflags_filter=echo
2358 host_ldflags_filter=echo
2359
2360 target_path='$(CURDIR)'
2361
2362 # since the object filename is not given with the -MM flag, the compiler
2363 # is only able to print the basename, and we must add the path ourselves
2364 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2365 DEPFLAGS='-MM'
2366
2367 # find source path
2368 if test -f configure; then
2369     source_path=.
2370 else
2371     source_path=$(cd $(dirname "$0"); pwd)
2372     echo "$source_path" | grep -q '[[:blank:]]' &&
2373         die "Out of tree builds are impossible with whitespace in source path."
2374     test -e "$source_path/config.h" &&
2375         die "Out of tree builds are impossible with config.h in source dir."
2376 fi
2377
2378 for v in "$@"; do
2379     r=${v#*=}
2380     l=${v%"$r"}
2381     r=$(sh_quote "$r")
2382     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2383 done
2384
2385 find_things(){
2386     thing=$1
2387     pattern=$2
2388     file=$source_path/$3
2389     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2390 }
2391
2392 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2393 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2394 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2395 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2396 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2397 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2398 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2399 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2400 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2401 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2402 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2403
2404 ALL_COMPONENTS="
2405     $BSF_LIST
2406     $DECODER_LIST
2407     $DEMUXER_LIST
2408     $ENCODER_LIST
2409     $FILTER_LIST
2410     $HWACCEL_LIST
2411     $INDEV_LIST
2412     $MUXER_LIST
2413     $OUTDEV_LIST
2414     $PARSER_LIST
2415     $PROTOCOL_LIST
2416 "
2417
2418 for n in $COMPONENT_LIST; do
2419     v=$(toupper ${n%s})_LIST
2420     eval enable \$$v
2421     eval ${n}_if_any="\$$v"
2422 done
2423
2424 enable $ARCH_EXT_LIST
2425
2426 die_unknown(){
2427     echo "Unknown option \"$1\"."
2428     echo "See $0 --help for available options."
2429     exit 1
2430 }
2431
2432 print_3_columns() {
2433     cat | tr ' ' '\n' | sort | pr -r -3 -t
2434 }
2435
2436 show_list() {
2437     suffix=_$1
2438     shift
2439     echo $* | sed s/$suffix//g | print_3_columns
2440     exit 0
2441 }
2442
2443 rand_list(){
2444     IFS=', '
2445     set -- $*
2446     unset IFS
2447     for thing; do
2448         comp=${thing%:*}
2449         prob=${thing#$comp}
2450         prob=${prob#:}
2451         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2452         echo "prob ${prob:-0.5}"
2453         printf '%s\n' $comp
2454     done
2455 }
2456
2457 do_random(){
2458     action=$1
2459     shift
2460     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2461     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2462 }
2463
2464 for opt do
2465     optval="${opt#*=}"
2466     case "$opt" in
2467         --extra-ldflags=*)
2468             add_ldflags $optval
2469         ;;
2470         --extra-ldexeflags=*)
2471             add_ldexeflags $optval
2472         ;;
2473         --extra-libs=*)
2474             add_extralibs $optval
2475         ;;
2476         --disable-devices)
2477             disable $INDEV_LIST $OUTDEV_LIST
2478         ;;
2479         --enable-debug=*)
2480             debuglevel="$optval"
2481         ;;
2482         --disable-programs)
2483             disable $PROGRAM_LIST
2484         ;;
2485         --disable-everything)
2486             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2487         ;;
2488         --disable-all)
2489             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2490             disable $LIBRARY_LIST $PROGRAM_LIST doc
2491         ;;
2492         --enable-random|--disable-random)
2493             action=${opt%%-random}
2494             do_random ${action#--} $COMPONENT_LIST
2495         ;;
2496         --enable-random=*|--disable-random=*)
2497             action=${opt%%-random=*}
2498             do_random ${action#--} $optval
2499         ;;
2500         --enable-*=*|--disable-*=*)
2501             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2502             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2503             eval list=\$$(toupper $thing)_LIST
2504             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2505             $action $(filter "$name" $list)
2506         ;;
2507         --enable-avserver|--disable-avserver*)
2508             warn "avserver has been removed, the ${opt} option is only"\
2509                  "provided for compatibility and will be removed in the future"
2510         ;;
2511         --enable-?*|--disable-?*)
2512             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2513             if is_in $option $COMPONENT_LIST; then
2514                 test $action = disable && action=unset
2515                 eval $action \$$(toupper ${option%s})_LIST
2516             elif is_in $option $CMDLINE_SELECT; then
2517                 $action $option
2518             else
2519                 die_unknown $opt
2520             fi
2521         ;;
2522         --list-*)
2523             NAME="${opt#--list-}"
2524             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2525             NAME=${NAME%s}
2526             eval show_list $NAME \$$(toupper $NAME)_LIST
2527         ;;
2528         --help|-h) show_help
2529         ;;
2530         *)
2531             optname="${opt%%=*}"
2532             optname="${optname#--}"
2533             optname=$(echo "$optname" | sed 's/-/_/g')
2534             if is_in $optname $CMDLINE_SET; then
2535                 eval $optname='$optval'
2536             elif is_in $optname $CMDLINE_APPEND; then
2537                 append $optname "$optval"
2538             else
2539                 die_unknown $opt
2540             fi
2541         ;;
2542     esac
2543 done
2544
2545 disabled logging && logfile=/dev/null
2546
2547 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2548 set >> $logfile
2549
2550 case "$toolchain" in
2551     clang-asan)
2552         cc_default="clang"
2553         add_cflags  -fsanitize=address
2554         add_ldflags -fsanitize=address
2555     ;;
2556     clang-tsan)
2557         cc_default="clang"
2558         add_cflags  -fsanitize=thread -pie
2559         add_ldflags -fsanitize=thread -pie
2560     ;;
2561     clang-usan)
2562         cc_default="clang"
2563         add_cflags  -fsanitize=undefined -O1
2564         add_ldflags -fsanitize=undefined
2565     ;;
2566     gcc-asan)
2567         cc_default="gcc"
2568         add_cflags  -fsanitize=address
2569         add_ldflags -fsanitize=address
2570     ;;
2571     gcc-tsan)
2572         cc_default="gcc"
2573         add_cflags  -fsanitize=thread -pie -fPIC
2574         add_ldflags -fsanitize=thread -pie -fPIC
2575     ;;
2576     gcc-usan)
2577         cc_default="gcc"
2578         add_cflags  -fsanitize=undefined
2579         add_ldflags -fsanitize=undefined
2580     ;;
2581     valgrind-massif)
2582         target_exec_default="valgrind"
2583         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2584     ;;
2585     valgrind-memcheck)
2586         target_exec_default="valgrind"
2587         target_exec_args="--track-origins=yes --leak-check=full"
2588     ;;
2589     msvc)
2590         # Check whether the current MSVC version needs the C99 converter.
2591         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2592         # support enough of C99 to build libav. Default to the new
2593         # behaviour if the regexp was unable to match anything, since this
2594         # successfully parses the version number of existing supported
2595         # versions that require the converter (MSVC 2010 and 2012).
2596         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2597         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2598             cc_default="cl"
2599         else
2600             cc_default="c99wrap cl"
2601         fi
2602         ld_default="link"
2603         nm_default="dumpbin -symbols"
2604         ar_default="lib"
2605         target_os_default="win32"
2606         # Use a relative path for TMPDIR. This makes sure all the
2607         # ffconf temp files are written with a relative path, avoiding
2608         # issues with msys/win32 path conversion for MSVC parameters
2609         # such as -Fo<file> or -out:<file>.
2610         TMPDIR=.
2611     ;;
2612     icl)
2613         cc_default="icl"
2614         ld_default="xilink"
2615         nm_default="dumpbin -symbols"
2616         ar_default="xilib"
2617         target_os_default="win32"
2618         TMPDIR=.
2619     ;;
2620     gcov)
2621         add_cflags  -fprofile-arcs -ftest-coverage
2622         add_ldflags -fprofile-arcs -ftest-coverage
2623     ;;
2624     hardened)
2625         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2626         add_cflags   -fno-strict-overflow -fstack-protector-all
2627         add_ldflags  -Wl,-z,relro -Wl,-z,now
2628     ;;
2629     ?*)
2630         die "Unknown toolchain $toolchain"
2631     ;;
2632 esac
2633
2634 test -n "$cross_prefix" && enable cross_compile
2635
2636 if enabled cross_compile; then
2637     test -n "$arch" && test -n "$target_os" ||
2638         die "Must specify target arch and OS when cross-compiling"
2639 fi
2640
2641 ar_default="${cross_prefix}${ar_default}"
2642 cc_default="${cross_prefix}${cc_default}"
2643 nm_default="${cross_prefix}${nm_default}"
2644 pkg_config_default="${cross_prefix}${pkg_config_default}"
2645 ranlib="${cross_prefix}${ranlib}"
2646 strip="${cross_prefix}${strip}"
2647
2648 sysinclude_default="${sysroot}/usr/include"
2649
2650 set_default arch cc pkg_config sysinclude target_exec target_os
2651 enabled cross_compile || host_cc_default=$cc
2652 set_default host_cc
2653
2654 if ! $pkg_config --version >/dev/null 2>&1; then
2655     warn "$pkg_config not found, library detection may fail."
2656     pkg_config=false
2657 fi
2658
2659 exesuf() {
2660     case $1 in
2661         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2662     esac
2663 }
2664
2665 EXESUF=$(exesuf $target_os)
2666 HOSTEXESUF=$(exesuf $host_os)
2667
2668 # set temporary file name
2669 : ${TMPDIR:=$TEMPDIR}
2670 : ${TMPDIR:=$TMP}
2671 : ${TMPDIR:=/tmp}
2672
2673 if ! check_cmd mktemp -u XXXXXX; then
2674     # simple replacement for missing mktemp
2675     # NOT SAFE FOR GENERAL USE
2676     mktemp(){
2677         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2678     }
2679 fi
2680
2681 tmpfile(){
2682     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2683         (set -C; exec > $tmp) 2>/dev/null ||
2684         die "Unable to create temporary file in $TMPDIR."
2685     append TMPFILES $tmp
2686     eval $1=$tmp
2687 }
2688
2689 trap 'rm -f -- $TMPFILES' EXIT
2690
2691 tmpfile TMPASM .asm
2692 tmpfile TMPC   .c
2693 tmpfile TMPE   $EXESUF
2694 tmpfile TMPH   .h
2695 tmpfile TMPO   .o
2696 tmpfile TMPS   .S
2697 tmpfile TMPSH  .sh
2698 tmpfile TMPV   .ver
2699
2700 unset -f mktemp
2701
2702 chmod +x $TMPE
2703
2704 # make sure we can execute files in $TMPDIR
2705 cat > $TMPSH 2>> $logfile <<EOF
2706 #! /bin/sh
2707 EOF
2708 chmod +x $TMPSH >> $logfile 2>&1
2709 if ! $TMPSH >> $logfile 2>&1; then
2710     cat <<EOF
2711 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2712 variable to another directory and make sure that it is not mounted noexec.
2713 EOF
2714     die "Sanity test failed."
2715 fi
2716
2717 armasm_flags(){
2718     for flag; do
2719         case $flag in
2720             # Filter out MSVC cl.exe options from cflags that shouldn't
2721             # be passed to gas-preprocessor
2722             -M[TD]*)                                            ;;
2723             *)                  echo $flag                      ;;
2724         esac
2725    done
2726 }
2727
2728 ccc_flags(){
2729     for flag; do
2730         case $flag in
2731             -std=c99)           echo -c99                       ;;
2732             -mcpu=*)            echo -arch ${flag#*=}           ;;
2733             -mieee)             echo -ieee                      ;;
2734             -O*|-fast)          echo $flag                      ;;
2735             -fno-math-errno)    echo -assume nomath_errno       ;;
2736             -g)                 echo -g3                        ;;
2737             -Wall)              echo -msg_enable level2         ;;
2738             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2739             -Wl,*)              echo $flag                      ;;
2740             -f*|-W*)                                            ;;
2741             *)                  echo $flag                      ;;
2742         esac
2743    done
2744 }
2745
2746 cparser_flags(){
2747     for flag; do
2748         case $flag in
2749             -Wno-switch)             echo -Wno-switch-enum ;;
2750             -Wno-format-zero-length) ;;
2751             -Wdisabled-optimization) ;;
2752             -Wno-pointer-sign)       echo -Wno-other ;;
2753             *)                       echo $flag ;;
2754         esac
2755     done
2756 }
2757
2758 msvc_common_flags(){
2759     for flag; do
2760         case $flag in
2761             # In addition to specifying certain flags under the compiler
2762             # specific filters, they must be specified here as well or else the
2763             # generic catch all at the bottom will print the original flag.
2764             -Wall)                ;;
2765             -std=c99)             ;;
2766             # Common flags
2767             -fomit-frame-pointer) ;;
2768             -g)                   echo -Z7 ;;
2769             -fno-math-errno)      ;;
2770             -fno-common)          ;;
2771             -fno-signed-zeros)    ;;
2772             -fPIC)                ;;
2773             -mthumb)              ;;
2774             -march=*)             ;;
2775             -lz)                  echo zlib.lib ;;
2776             -lavifil32)           echo vfw32.lib ;;
2777             -lavicap32)           echo vfw32.lib user32.lib ;;
2778             -l*)                  echo ${flag#-l}.lib ;;
2779             -L*)                  echo -libpath:${flag#-L} ;;
2780             *)                    echo $flag ;;
2781         esac
2782     done
2783 }
2784
2785 msvc_flags(){
2786     msvc_common_flags "$@"
2787     for flag; do
2788         case $flag in
2789             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2790                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2791                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2792                                        -wd4273 -wd4554 -wd4701 ;;
2793         esac
2794     done
2795 }
2796
2797 icl_flags(){
2798     msvc_common_flags "$@"
2799     for flag; do
2800         case $flag in
2801             # Despite what Intel's documentation says -Wall, which is supported
2802             # on Windows, does enable remarks so disable them here.
2803             -Wall)                echo $flag -Qdiag-disable:remark ;;
2804             -std=c99)             echo -Qstd=c99 ;;
2805         esac
2806     done
2807 }
2808
2809 pgi_flags(){
2810     for flag; do
2811         case $flag in
2812             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2813             -fomit-frame-pointer) echo -Mnoframe ;;
2814             -g)                   echo -gopt ;;
2815             *)                    echo $flag ;;
2816         esac
2817     done
2818 }
2819
2820 suncc_flags(){
2821     for flag; do
2822         case $flag in
2823             -march=*|-mcpu=*)
2824                 case "${flag#*=}" in
2825                     native)                   echo -xtarget=native       ;;
2826                     v9|niagara)               echo -xarch=sparc          ;;
2827                     ultrasparc)               echo -xarch=sparcvis       ;;
2828                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2829                     i586|pentium)             echo -xchip=pentium        ;;
2830                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2831                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2832                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2833                     pentium4*)          echo -xtarget=pentium4           ;;
2834                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2835                     *-sse3)             echo -xarch=sse3                 ;;
2836                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2837                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2838                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2839                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2840                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2841                     k8|opteron|athlon64|athlon-fx)
2842                                                echo -xarch=sse2a         ;;
2843                     athlon*)                   echo -xarch=pentium_proa  ;;
2844                 esac
2845                 ;;
2846             -std=c99)             echo -xc99              ;;
2847             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2848             -fPIC)                echo -KPIC -xcode=pic32 ;;
2849             -W*,*)                echo $flag              ;;
2850             -f*-*|-W*|-mimpure-text)                      ;;
2851             -shared)              echo -G                 ;;
2852             *)                    echo $flag              ;;
2853         esac
2854     done
2855 }
2856
2857 tms470_flags(){
2858     for flag; do
2859         case $flag in
2860             -march=*|-mcpu=*)
2861                 case "${flag#*=}" in
2862                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2863                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2864                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2865                     armv6*|arm11*)          echo -mv=6   ;;
2866                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2867                                             echo -mv=5e  ;;
2868                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2869                 esac
2870                 ;;
2871             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2872             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2873             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2874             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2875             -msoft-float)   echo --float_support=vfplib       ;;
2876             -O[0-3]|-mf=*)  echo $flag                        ;;
2877             -g)             echo -g -mn                       ;;
2878             -pds=*)         echo $flag                        ;;
2879             -D*|-I*)        echo $flag                        ;;
2880             --gcc|--abi=*)  echo $flag                        ;;
2881             -me)            echo $flag                        ;;
2882         esac
2883     done
2884 }
2885
2886 probe_cc(){
2887     pfx=$1
2888     _cc=$2
2889
2890     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2891     unset _ld_o _ldflags _ld_lib _ld_path
2892     unset _depflags _DEPCMD _DEPFLAGS
2893     _flags_filter=echo
2894
2895     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2896         _type=llvm_gcc
2897         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2898         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2899         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2900         _cflags_speed='-O3'
2901         _cflags_size='-Os'
2902     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2903         _type=gcc
2904         gcc_version=$($_cc --version | head -n1)
2905         gcc_basever=$($_cc -dumpversion)
2906         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2907         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2908         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2909         if ! $_cc -dumpversion | grep -q '^2\.'; then
2910             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2911         fi
2912         _cflags_speed='-O3'
2913         _cflags_size='-Os'
2914     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2915         _type=icc
2916         _ident=$($_cc --version | head -n1)
2917         _depflags='-MMD'
2918         _cflags_speed='-O3'
2919         _cflags_size='-Os'
2920         _cflags_noopt='-O1'
2921     elif $_cc -v 2>&1 | grep -q xlc; then
2922         _type=xlc
2923         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2924         _cflags_speed='-O5'
2925         _cflags_size='-O5 -qcompact'
2926     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2927         _type=ccc
2928         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2929         _DEPFLAGS='-M'
2930         _cflags_speed='-fast'
2931         _cflags_size='-O1'
2932         _flags_filter=ccc_flags
2933     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
2934         test -d "$sysroot" || die "No valid sysroot specified."
2935         _type=armcc
2936         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
2937         armcc_conf="$PWD/armcc.conf"
2938         $_cc --arm_linux_configure                 \
2939              --arm_linux_config_file="$armcc_conf" \
2940              --configure_sysroot="$sysroot"        \
2941              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2942              die "Error creating armcc configuration file."
2943         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2944         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2945         as_default="${cross_prefix}gcc"
2946         _depflags='-MMD'
2947         _cflags_speed='-O3'
2948         _cflags_size='-Os'
2949     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2950         _type=tms470
2951         _ident=$($_cc -version | head -n1 | tr -s ' ')
2952         _flags='--gcc --abi=eabi -me'
2953         _cc_e='-ppl -fe=$@'
2954         _cc_o='-fe=$@'
2955         _depflags='-ppa -ppd=$(@:.o=.d)'
2956         _cflags_speed='-O3 -mf=5'
2957         _cflags_size='-O3 -mf=2'
2958         _flags_filter=tms470_flags
2959     elif $_cc -v 2>&1 | grep -q clang; then
2960         _type=clang
2961         _ident=$($_cc --version | head -n1)
2962         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2963         _cflags_speed='-O3'
2964         _cflags_size='-Os'
2965     elif $_cc -V 2>&1 | grep -q Sun; then
2966         _type=suncc
2967         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2968         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2969         _DEPFLAGS='-xM1 -xc99'
2970         _ldflags='-std=c99'
2971         _cflags_speed='-O5'
2972         _cflags_size='-O5 -xspace'
2973         _flags_filter=suncc_flags
2974     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2975         _type=pathscale
2976         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2977         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2978         _cflags_speed='-O2'
2979         _cflags_size='-Os'
2980         _flags_filter='filter_out -Wdisabled-optimization'
2981     elif $_cc -v 2>&1 | grep -q Open64; then
2982         _type=open64
2983         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2984         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2985         _cflags_speed='-O2'
2986         _cflags_size='-Os'
2987         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2988     elif $_cc -V 2>&1 | grep -q Portland; then
2989         _type=pgi
2990         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2991         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2992         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2993         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2994         _cflags_noopt="-O1"
2995         _flags_filter=pgi_flags
2996     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
2997         _type=armasm
2998         _ident=$($_cc | head -n1)
2999         # 4509: "This form of conditional instruction is deprecated"
3000         _flags="-nologo -ignore 4509"
3001         _flags_filter=armasm_flags
3002     elif $_cc 2>&1 | grep -q Microsoft; then
3003         _type=msvc
3004         _ident=$($_cc 2>&1 | head -n1)
3005         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3006         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3007         _cflags_speed="-O2"
3008         _cflags_size="-O1"
3009         if $_cc 2>&1 | grep -q Linker; then
3010             _ld_o='-out:$@'
3011         else
3012             _ld_o='-Fe$@'
3013         fi
3014         _cc_o='-Fo$@'
3015         _cc_e='-P -Fi$@'
3016         _flags_filter=msvc_flags
3017         _ld_lib='lib%.a'
3018         _ld_path='-libpath:'
3019         _flags='-nologo'
3020         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3021         if [ $pfx = hostcc ]; then
3022             append _cflags -Dsnprintf=_snprintf
3023         fi
3024     elif $_cc 2>&1 | grep -q Intel; then
3025         _type=icl
3026         _ident=$($_cc 2>&1 | head -n1)
3027         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3028         # Not only is O3 broken on 13.x+ but it is slower on all previous
3029         # versions (tested) as well.
3030         _cflags_speed="-O2"
3031         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3032         if $_cc 2>&1 | grep -q Linker; then
3033             _ld_o='-out:$@'
3034         else
3035             _ld_o='-Fe$@'
3036         fi
3037         _cc_o='-Fo$@'
3038         _cc_e='-P'
3039         _flags_filter=icl_flags
3040         _ld_lib='lib%.a'
3041         _ld_path='-libpath:'
3042         # -Qdiag-error to make icl error when seeing certain unknown arguments
3043         _flags='-nologo -Qdiag-error:4044,10157'
3044         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3045         # with MSVC which enables it by default.
3046         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3047         if [ $pfx = hostcc ]; then
3048             append _cflags -Dsnprintf=_snprintf
3049         fi
3050     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3051         _type=cparser
3052         _ident=$($_cc --version | head -n1)
3053         _depflags='-MMD'
3054         _cflags_speed='-O4'
3055         _cflags_size='-O2'
3056         _flags_filter=cparser_flags
3057     fi
3058
3059     eval ${pfx}_type=\$_type
3060     eval ${pfx}_ident=\$_ident
3061 }
3062
3063 set_ccvars(){
3064     eval ${1}_C=\${_cc_c-\${${1}_C}}
3065     eval ${1}_E=\${_cc_e-\${${1}_E}}
3066     eval ${1}_O=\${_cc_o-\${${1}_O}}
3067
3068     if [ -n "$_depflags" ]; then
3069         eval ${1}_DEPFLAGS=\$_depflags
3070     else
3071         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3072         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3073         eval DEP${1}FLAGS=\$_flags
3074     fi
3075 }
3076
3077 probe_cc cc "$cc"
3078 cflags_filter=$_flags_filter
3079 cflags_speed=$_cflags_speed
3080 cflags_size=$_cflags_size
3081 cflags_noopt=$_cflags_noopt
3082 add_cflags $_flags $_cflags
3083 cc_ldflags=$_ldflags
3084 set_ccvars CC
3085
3086 probe_cc hostcc "$host_cc"
3087 host_cflags_filter=$_flags_filter
3088 add_host_cflags  $_flags $_cflags
3089 set_ccvars HOSTCC
3090
3091 test -n "$cc_type" && enable $cc_type ||
3092     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3093
3094 : ${as_default:=$cc}
3095 : ${dep_cc_default:=$cc}
3096 : ${ld_default:=$cc}
3097 : ${host_ld_default:=$host_cc}
3098 set_default ar as dep_cc ld host_ld
3099
3100 probe_cc as "$as"
3101 asflags_filter=$_flags_filter
3102 add_asflags $_flags $_cflags
3103 set_ccvars AS
3104
3105 probe_cc ld "$ld"
3106 ldflags_filter=$_flags_filter
3107 add_ldflags $_flags $_ldflags
3108 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3109 LD_O=${_ld_o-$LD_O}
3110 LD_LIB=${_ld_lib-$LD_LIB}
3111 LD_PATH=${_ld_path-$LD_PATH}
3112
3113 probe_cc hostld "$host_ld"
3114 host_ldflags_filter=$_flags_filter
3115 add_host_ldflags $_flags $_ldflags
3116 HOSTLD_O=${_ld_o-$HOSTLD_O}
3117
3118 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3119     probe_cc depcc "$dep_cc"
3120     CCDEP=${_DEPCMD:-$DEPCMD}
3121     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3122     DEPCCFLAGS=$_flags
3123 fi
3124
3125 if $ar 2>&1 | grep -q Microsoft; then
3126     arflags="-nologo"
3127     ar_o='-out:$@'
3128 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3129     arflags="rq"
3130     ar_o='$@'
3131 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3132     arflags='-Xany -r -c'
3133     ar_o='$@'
3134 else
3135     arflags="rc"
3136     ar_o='$@'
3137 fi
3138
3139 add_cflags $extra_cflags
3140 add_asflags $extra_cflags
3141
3142 if test -n "$sysroot"; then
3143     case "$cc_type" in
3144         gcc|llvm_gcc|clang)
3145             add_cppflags --sysroot="$sysroot"
3146             add_ldflags --sysroot="$sysroot"
3147         ;;
3148         tms470)
3149             add_cppflags -I"$sysinclude"
3150             add_ldflags  --sysroot="$sysroot"
3151         ;;
3152     esac
3153 fi
3154
3155 if test "$cpu" = host; then
3156     enabled cross_compile &&
3157         die "--cpu=host makes no sense when cross-compiling."
3158
3159     case "$cc_type" in
3160         gcc|llvm_gcc)
3161             check_native(){
3162                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3163                 sed -n "/cc1.*$1=/{
3164                             s/.*$1=\\([^ ]*\\).*/\\1/
3165                             p
3166                             q
3167                         }" $TMPE
3168             }
3169             cpu=$(check_native -march || check_native -mcpu)
3170         ;;
3171     esac
3172
3173     test "${cpu:-host}" = host &&
3174         die "--cpu=host not supported with compiler $cc"
3175 fi
3176
3177 # Deal with common $arch aliases
3178 case "$arch" in
3179     aarch64|arm64)
3180         arch="aarch64"
3181     ;;
3182     arm*)
3183         arch="arm"
3184     ;;
3185     mips*|IP*)
3186         arch="mips"
3187     ;;
3188     parisc*|hppa*)
3189         arch="parisc"
3190     ;;
3191     "Power Macintosh"|ppc*|powerpc*)
3192         arch="ppc"
3193     ;;
3194     s390|s390x)
3195         arch="s390"
3196     ;;
3197     sh4|sh)
3198         arch="sh4"
3199     ;;
3200     sun4u|sparc*)
3201         arch="sparc"
3202     ;;
3203     tilegx|tile-gx)
3204         arch="tilegx"
3205     ;;
3206     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3207         arch="x86"
3208     ;;
3209 esac
3210
3211 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3212 enable $arch
3213
3214 # Add processor-specific flags
3215 if enabled aarch64; then
3216
3217     case $cpu in
3218         armv*)
3219             cpuflags="-march=$cpu"
3220         ;;
3221         *)
3222             cpuflags="-mcpu=$cpu"
3223         ;;
3224     esac
3225
3226 elif enabled alpha; then
3227
3228     cpuflags="-mcpu=$cpu"
3229
3230 elif enabled arm; then
3231
3232     check_arm_arch() {
3233         check_cpp_condition stddef.h \
3234             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3235             $cpuflags
3236     }
3237
3238     probe_arm_arch() {
3239         if   check_arm_arch 4;        then echo armv4;
3240         elif check_arm_arch 4T;       then echo armv4t;
3241         elif check_arm_arch 5;        then echo armv5;
3242         elif check_arm_arch 5E;       then echo armv5e;
3243         elif check_arm_arch 5T;       then echo armv5t;
3244         elif check_arm_arch 5TE;      then echo armv5te;
3245         elif check_arm_arch 5TEJ;     then echo armv5te;
3246         elif check_arm_arch 6;        then echo armv6;
3247         elif check_arm_arch 6J;       then echo armv6j;
3248         elif check_arm_arch 6K;       then echo armv6k;
3249         elif check_arm_arch 6Z;       then echo armv6z;
3250         elif check_arm_arch 6ZK;      then echo armv6zk;
3251         elif check_arm_arch 6T2;      then echo armv6t2;
3252         elif check_arm_arch 7;        then echo armv7;
3253         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3254         elif check_arm_arch 7S;       then echo armv7-a;
3255         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3256         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3257         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3258         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3259         fi
3260     }
3261
3262     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3263
3264     case $cpu in
3265         armv*)
3266             cpuflags="-march=$cpu"
3267             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3268         ;;
3269         *)
3270             cpuflags="-mcpu=$cpu"
3271             case $cpu in
3272                 cortex-a*)                               subarch=armv7a  ;;
3273                 cortex-r*)                               subarch=armv7r  ;;
3274                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3275                 arm11*)                                  subarch=armv6   ;;
3276                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3277                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3278                 *)                             subarch=$(probe_arm_arch) ;;
3279             esac
3280         ;;
3281     esac
3282
3283     case "$subarch" in
3284         armv5t*)    enable fast_clz                ;;
3285         armv[6-8]*) enable fast_clz fast_unaligned ;;
3286     esac
3287
3288 elif enabled avr32; then
3289
3290     case $cpu in
3291         ap7[02]0[0-2])
3292             subarch="avr32_ap"
3293             cpuflags="-mpart=$cpu"
3294         ;;
3295         ap)
3296             subarch="avr32_ap"
3297             cpuflags="-march=$cpu"
3298         ;;
3299         uc3[ab]*)
3300             subarch="avr32_uc"
3301             cpuflags="-mcpu=$cpu"
3302         ;;
3303         uc)
3304             subarch="avr32_uc"
3305             cpuflags="-march=$cpu"
3306         ;;
3307     esac
3308
3309 elif enabled bfin; then
3310
3311     cpuflags="-mcpu=$cpu"
3312
3313 elif enabled mips; then
3314
3315     cpuflags="-march=$cpu"
3316
3317 elif enabled ppc; then
3318
3319     disable ldbrx
3320
3321     case $(tolower $cpu) in
3322         601|ppc601|powerpc601)
3323             cpuflags="-mcpu=601"
3324             disable altivec
3325         ;;
3326         603*|ppc603*|powerpc603*)
3327             cpuflags="-mcpu=603"
3328             disable altivec
3329         ;;
3330         604*|ppc604*|powerpc604*)
3331             cpuflags="-mcpu=604"
3332             disable altivec
3333         ;;
3334         g3|75*|ppc75*|powerpc75*)
3335             cpuflags="-mcpu=750"
3336             disable altivec
3337         ;;
3338         g4|745*|ppc745*|powerpc745*)
3339             cpuflags="-mcpu=7450"
3340             disable vsx
3341         ;;
3342         74*|ppc74*|powerpc74*)
3343             cpuflags="-mcpu=7400"
3344             disable vsx
3345         ;;
3346         g5|970|ppc970|powerpc970)
3347             cpuflags="-mcpu=970"
3348             disable vsx
3349         ;;
3350         power[3-6]*)
3351             cpuflags="-mcpu=$cpu"
3352             disable vsx
3353         ;;
3354         power[7-8]*)
3355             cpuflags="-mcpu=$cpu"
3356             enable ldbrx
3357         ;;
3358         cell)
3359             cpuflags="-mcpu=cell"
3360             enable ldbrx
3361             disable vsx
3362         ;;
3363         e500mc)
3364             cpuflags="-mcpu=e500mc"
3365             disable altivec
3366         ;;
3367         e500v2)
3368             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3369             disable altivec
3370             disable dcbzl
3371         ;;
3372         e500)
3373             cpuflags="-mcpu=8540 -mhard-float"
3374             disable altivec
3375             disable dcbzl
3376         ;;
3377     esac
3378
3379 elif enabled sparc; then
3380
3381     case $cpu in
3382         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3383             cpuflags="-mcpu=$cpu"
3384         ;;
3385         ultrasparc*|niagara[234])
3386             cpuflags="-mcpu=$cpu"
3387         ;;
3388     esac
3389
3390 elif enabled x86; then
3391
3392     case $cpu in
3393         i[345]86|pentium)
3394             cpuflags="-march=$cpu"
3395             disable i686
3396             disable mmx
3397         ;;
3398         # targets that do NOT support nopl and conditional mov (cmov)
3399         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3400             cpuflags="-march=$cpu"
3401             disable i686
3402         ;;
3403         # targets that do support nopl and conditional mov (cmov)
3404         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3405             cpuflags="-march=$cpu"
3406             enable i686
3407             enable fast_cmov
3408         ;;
3409         # targets that do support conditional mov but on which it's slow
3410         pentium4|pentium4m|prescott|nocona)
3411             cpuflags="-march=$cpu"
3412             enable i686
3413             disable fast_cmov
3414         ;;
3415     esac
3416
3417 fi
3418
3419 if [ "$cpu" != generic ]; then
3420     add_cflags  $cpuflags
3421     add_asflags $cpuflags
3422 fi
3423
3424 # compiler sanity check
3425 check_exec <<EOF
3426 int main(void){ return 0; }
3427 EOF
3428 if test "$?" != 0; then
3429     echo "$cc is unable to create an executable file."
3430     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3431         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3432         echo "Only do this if you know what cross compiling means."
3433     fi
3434     die "C compiler test failed."
3435 fi
3436
3437 add_cppflags -D_ISOC99_SOURCE
3438 check_cflags -std=c99
3439 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3440 #include <stdlib.h>
3441 EOF
3442 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3443 #include <stdlib.h>
3444 EOF
3445
3446 add_host_cppflags -D_ISOC99_SOURCE
3447 check_host_cflags -std=c99
3448 check_host_cflags -Wall
3449 check_host_cflags -O3
3450
3451 check_64bit(){
3452     arch32=$1
3453     arch64=$2
3454     expr=$3
3455     check_code cc "" "int test[2*($expr) - 1]" &&
3456         subarch=$arch64 || subarch=$arch32
3457 }
3458
3459 case "$arch" in
3460     aarch64|alpha|ia64)
3461         spic=$shared
3462     ;;
3463     mips)
3464         check_64bit mips mips64 '_MIPS_SIM > 1'
3465         spic=$shared
3466     ;;
3467     parisc)
3468         check_64bit parisc parisc64 'sizeof(void *) > 4'
3469         spic=$shared
3470     ;;
3471     ppc)
3472         check_64bit ppc ppc64 'sizeof(void *) > 4'
3473         spic=$shared
3474     ;;
3475     s390)
3476         check_64bit s390 s390x 'sizeof(void *) > 4'
3477         spic=$shared
3478     ;;
3479     sparc)
3480         check_64bit sparc sparc64 'sizeof(void *) > 4'
3481         spic=$shared
3482     ;;
3483     x86)
3484         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3485         if test "$subarch" = "x86_64"; then
3486             spic=$shared
3487         fi
3488     ;;
3489 esac
3490
3491 enable $subarch
3492 enabled spic && enable_weak pic
3493
3494 # OS specific
3495 case $target_os in
3496     aix)
3497         SHFLAGS=-shared
3498         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3499         enabled shared && add_ldflags -Wl,-brtl
3500         ;;
3501     android)
3502         disable symver
3503         enable section_data_rel_ro
3504         SLIB_INSTALL_NAME='$(SLIBNAME)'
3505         SLIB_INSTALL_LINKS=
3506         # soname not set on purpose
3507         SHFLAGS=-shared
3508         ;;
3509     haiku)
3510         prefix_default="/boot/common"
3511         network_extralibs="-lnetwork"
3512         host_libs=
3513         ;;
3514     sunos)
3515         SHFLAGS='-shared -Wl,-h,$$(@F)'
3516         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3517         network_extralibs="-lsocket -lnsl"
3518         # When using suncc to build, the Solaris linker will mark
3519         # an executable with each instruction set encountered by
3520         # the Solaris assembler.  As our libraries contain their own
3521         # guards for processor-specific code, instead suppress
3522         # generation of the HWCAPS ELF section on Solaris x86 only.
3523         enabled_all suncc x86 &&
3524             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3525             add_ldflags -Wl,-M,mapfile
3526         nm_default='nm -P -g'
3527         ;;
3528     netbsd)
3529         disable symver
3530         oss_indev_extralibs="-lossaudio"
3531         oss_outdev_extralibs="-lossaudio"
3532         ;;
3533     openbsd|bitrig)
3534         disable symver
3535         SHFLAGS='-shared'
3536         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3537         SLIB_INSTALL_LINKS=
3538         oss_indev_extralibs="-lossaudio"
3539         oss_outdev_extralibs="-lossaudio"
3540         ;;
3541     dragonfly)
3542         disable symver
3543         ;;
3544     freebsd)
3545         ;;
3546     bsd/os)
3547         add_extralibs -lpoll -lgnugetopt
3548         ;;
3549     darwin)
3550         enabled ppc && add_asflags -force_cpusubtype_ALL
3551         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3552         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3553         add_ldflags -Wl,-dynamic,-search_paths_first
3554         SLIBSUF=".dylib"
3555         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3556         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3557         objformat="macho"
3558         enabled x86_64 && objformat="macho64"
3559         enabled_any pic shared ||
3560             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3561         ;;
3562     mingw32*)
3563         if test $target_os = "mingw32ce"; then
3564             disable network
3565         else
3566             target_os=mingw32
3567         fi
3568         LIBTARGET=i386
3569         if enabled x86_64; then
3570             LIBTARGET="i386:x86-64"
3571         elif enabled arm; then
3572             LIBTARGET=arm-wince
3573         fi
3574         check_ldflags -Wl,--nxcompat
3575         check_ldflags -Wl,--dynamicbase
3576         shlibdir_default="$bindir_default"
3577         SLIBPREF=""
3578         SLIBSUF=".dll"
3579         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3580         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3581         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3582         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3583         SLIB_INSTALL_LINKS=
3584         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3585         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3586         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3587         objformat="win32"
3588         dlltool="${cross_prefix}dlltool"
3589         ranlib=:
3590         enable dos_paths
3591         ;;
3592     win32|win64)
3593         disable symver
3594         if enabled shared; then
3595             # Link to the import library instead of the normal static library
3596             # for shared libs.
3597             LD_LIB='%.lib'
3598             # Cannot build both shared and static libs with MSVC or icl.
3599             disable static
3600         fi
3601         shlibdir_default="$bindir_default"
3602         SLIBPREF=""
3603         SLIBSUF=".dll"
3604         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3605         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3606         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3607         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3608         SLIB_INSTALL_LINKS=
3609         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3610         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3611         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3612         objformat="win32"
3613         ranlib=:
3614         enable dos_paths
3615         ;;
3616     cygwin*)
3617         target_os=cygwin
3618         shlibdir_default="$bindir_default"
3619         SLIBPREF="cyg"
3620         SLIBSUF=".dll"
3621         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3622         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3623         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3624         SLIB_INSTALL_LINKS=
3625         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3626         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3627         objformat="win32"
3628         enable dos_paths
3629         ;;
3630     *-dos|freedos|opendos)
3631         network_extralibs="-lsocket"
3632         objformat="coff"
3633         enable dos_paths
3634         add_cppflags -U__STRICT_ANSI__
3635         ;;
3636     linux)
3637         enable dv1394
3638         enable section_data_rel_ro
3639         ;;
3640     irix*)
3641         target_os=irix
3642         ranlib="echo ignoring ranlib"
3643         ;;
3644     os/2*)
3645         ln_s="cp -f"
3646         objformat="aout"
3647         add_cppflags -D_GNU_SOURCE
3648         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3649         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3650         LIBSUF="_s.a"
3651         SLIBPREF=""
3652         SLIBSUF=".dll"
3653         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3654         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3655         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3656             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3657             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3658             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3659             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3660             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3661         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3662             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3663         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3664         enable dos_paths
3665         ;;
3666     gnu/kfreebsd)
3667         add_cppflags -D_BSD_SOURCE
3668         ;;
3669     gnu)
3670         ;;
3671     qnx)
3672         add_cppflags -D_QNX_SOURCE
3673         network_extralibs="-lsocket"
3674         ;;
3675     symbian)
3676         SLIBSUF=".dll"
3677         enable dos_paths
3678         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3679         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3680         add_ldflags -Wl,--target1-abs,--no-undefined \
3681                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3682                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3683         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3684                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3685                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3686         ;;
3687     osf1)
3688         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3689         ;;
3690     minix)
3691         ;;
3692     plan9)
3693         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3694                      -D_REENTRANT_SOURCE        \
3695                      -D_RESEARCH_SOURCE         \
3696                      -DFD_SETSIZE=96            \
3697                      -DHAVE_SOCK_OPTS
3698         add_compat strtod.o strtod=avpriv_strtod
3699         network_extralibs='-lbsd'
3700         exeobjs=compat/plan9/main.o
3701         cp_f='cp'
3702         ;;
3703     none)
3704         ;;
3705     *)
3706         die "Unknown OS '$target_os'."
3707         ;;
3708 esac
3709
3710 # determine libc flavour
3711
3712 probe_libc(){
3713     pfx=$1
3714     pfx_no_=${pfx%_}
3715     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3716     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3717         eval ${pfx}libc_type=uclibc
3718         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3719     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3720         eval ${pfx}libc_type=glibc
3721         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3722     # MinGW headers can be installed on Cygwin, so check for newlib first.
3723     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3724         eval ${pfx}libc_type=newlib
3725         add_${pfx}cppflags -U__STRICT_ANSI__
3726     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3727     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3728         eval ${pfx}libc_type=mingw64
3729         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3730         eval test \$${pfx_no_}cc_type = "gcc" &&
3731             add_${pfx}cppflags -D__printf__=__gnu_printf__
3732     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3733          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3734         eval ${pfx}libc_type=mingw32
3735         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3736             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3737             die "ERROR: MinGW32 runtime version must be >= 3.15."
3738         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3739         eval test \$${pfx_no_}cc_type = "gcc" &&
3740             add_${pfx}cppflags -D__printf__=__gnu_printf__
3741     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3742         eval ${pfx}libc_type=msvcrt
3743         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3744         # 0x601 by default unless something else is set by the user.
3745         # This can easily lead to us detecting functions only present
3746         # in such new versions and producing binaries requiring windows 7.0.
3747         # Therefore explicitly set the default to XP unless the user has
3748         # set something else on the command line.
3749         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3750             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3751     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3752         eval ${pfx}libc_type=klibc
3753     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3754         eval ${pfx}libc_type=bionic
3755     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3756         eval ${pfx}libc_type=solaris
3757         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3758     else
3759         eval ${pfx}libc_type=default
3760         add_${pfx}cppflags -D_DEFAULT_SOURCE
3761     fi
3762 }
3763
3764 probe_libc
3765 test -n "$libc_type" && enable libc_$libc_type
3766 probe_libc host_
3767 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3768
3769 case $libc_type in
3770     bionic)
3771         add_compat strtod.o strtod=avpriv_strtod
3772         ;;
3773     msvcrt)
3774         add_compat strtod.o strtod=avpriv_strtod
3775         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3776                                      _snprintf=avpriv_snprintf  \
3777                                      vsnprintf=avpriv_vsnprintf
3778         ;;
3779 esac
3780
3781 # hacks for compiler/libc/os combinations
3782
3783 if enabled_all tms470 libc_glibc; then
3784     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3785     add_cppflags -D__USER_LABEL_PREFIX__=
3786     add_cppflags -D__builtin_memset=memset
3787     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3788     add_cflags   -pds=48    # incompatible redefinition of macro
3789 fi
3790
3791 if enabled_all ccc libc_glibc; then
3792     add_ldflags -Wl,-z,now  # calls to libots crash without this
3793 fi
3794
3795 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3796     add_cppflags '-I\$(SRC_PATH)/compat/float'
3797
3798 esc(){
3799     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3800 }
3801
3802 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3803
3804 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3805
3806 set_default $PATHS_LIST
3807 set_default nm
3808
3809 # we need to build at least one lib type
3810 if ! enabled_any static shared; then
3811     cat <<EOF
3812 At least one library type must be built.
3813 Specify --enable-static to build the static libraries or --enable-shared to
3814 build the shared libraries as well. To only build the shared libraries specify
3815 --disable-static in addition to --enable-shared.
3816 EOF
3817     exit 1;
3818 fi
3819
3820 die_license_disabled() {
3821     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3822 }
3823
3824 die_license_disabled gpl libcdio
3825 die_license_disabled gpl libx264
3826 die_license_disabled gpl libx265
3827 die_license_disabled gpl libxavs
3828 die_license_disabled gpl libxvid
3829 die_license_disabled gpl x11grab
3830
3831 die_license_disabled nonfree libfaac
3832 die_license_disabled nonfree libfdk_aac
3833 die_license_disabled nonfree nvenc
3834 die_license_disabled nonfree openssl
3835
3836 die_license_disabled version3 libopencore_amrnb
3837 die_license_disabled version3 libopencore_amrwb
3838 die_license_disabled version3 libvo_aacenc
3839 die_license_disabled version3 libvo_amrwbenc
3840
3841 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3842
3843 disabled optimizations || check_cflags -fomit-frame-pointer
3844
3845 enable_weak_pic() {
3846     disabled pic && return
3847     enable pic
3848     add_cppflags -DPIC
3849     case "$target_os" in
3850     mingw*|cygwin*)
3851         ;;
3852     *)
3853         add_cflags -fPIC
3854         ;;
3855     esac
3856     add_asflags  -fPIC
3857 }
3858
3859 enabled pic && enable_weak_pic
3860
3861 check_cc <<EOF || die "Symbol mangling check failed."
3862 int ff_extern;
3863 EOF
3864 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3865 extern_prefix=${sym%%ff_extern*}
3866
3867 check_cc <<EOF && enable_weak inline_asm
3868 void foo(void) { __asm__ volatile ("" ::); }
3869 EOF
3870
3871 _restrict=
3872 for restrict_keyword in restrict __restrict__ __restrict; do
3873     check_cc <<EOF && _restrict=$restrict_keyword && break
3874 void foo(char * $restrict_keyword p);
3875 EOF
3876 done
3877
3878 check_cc <<EOF && enable pragma_deprecated
3879 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3880 EOF
3881
3882 check_cc <<EOF && enable attribute_packed
3883 struct { int x; } __attribute__((packed)) x;
3884 EOF
3885
3886 check_cc <<EOF && enable attribute_may_alias
3887 union { int x; } __attribute__((may_alias)) x;
3888 EOF
3889
3890 check_cc <<EOF || die "endian test failed"
3891 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3892 EOF
3893 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3894
3895 check_gas() {
3896     log "check_gas using '$as' as AS"
3897     # :vararg is used on aarch64, arm and ppc altivec
3898     check_as <<EOF || return 1
3899 .macro m n, y:vararg=0
3900 \n: .int \y
3901 .endm
3902 m x
3903 EOF
3904     # .altmacro is only used in arm asm
3905     ! enabled arm || check_as <<EOF || return 1
3906 .altmacro
3907 EOF
3908     enable gnu_as
3909     return 0
3910 }
3911
3912 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
3913     nogas=:
3914     enabled_any arm aarch64 && nogas=die
3915     enabled_all ppc altivec && nogas=warn
3916     as_noop=-v
3917
3918     case $as_type in
3919         arm*) gaspp_as_type=armasm; as_noop=-h ;;
3920         gcc)  gaspp_as_type=gas ;;
3921         *)    gaspp_as_type=$as_type ;;
3922     esac
3923
3924     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
3925
3926     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
3927         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
3928
3929     if ! check_gas ; then
3930         as=${gas:=$as}
3931         check_gas || \
3932             $nogas "GNU assembler not found, install/update gas-preprocessor"
3933     fi
3934
3935     check_as <<EOF && enable as_func
3936 .func test
3937 .endfunc
3938 EOF
3939 fi
3940
3941 check_inline_asm inline_asm_labels '"1:\n"'
3942
3943 if enabled aarch64; then
3944     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
3945     # internal assembler in clang 3.3 does not support this instruction
3946     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
3947     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
3948
3949     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
3950
3951 elif enabled alpha; then
3952
3953     check_cflags -mieee
3954
3955 elif enabled arm; then
3956
3957     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
3958     enabled thumb && check_cflags -mthumb || check_cflags -marm
3959
3960     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3961         enable vfp_args
3962     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3963         case "${cross_prefix:-$cc}" in
3964             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3965             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3966 __asm__ (".eabi_attribute 28, 1");
3967 int main(void) { return 0; }
3968 EOF
3969         esac
3970         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3971     fi
3972
3973     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3974     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3975     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3976     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3977     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3978     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3979
3980     [ $target_os = linux ] || [ $target_os = android ] ||
3981         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3982             $ARCH_EXT_LIST_ARM
3983
3984     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3985
3986     check_as <<EOF && enable as_dn_directive
3987 ra .dn d0.i16
3988 .unreq ra
3989 EOF
3990
3991     # llvm's integrated assembler supports .object_arch from llvm 3.5
3992     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
3993 .object_arch armv4
3994 EOF
3995
3996     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3997
3998 elif enabled mips; then
3999
4000     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4001
4002 elif enabled parisc; then
4003
4004     if enabled gcc; then
4005         case $($cc -dumpversion) in
4006             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4007         esac
4008     fi
4009
4010 elif enabled ppc; then
4011
4012     enable local_aligned_8 local_aligned_16
4013
4014     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4015     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4016     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4017     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4018
4019     # AltiVec flags: The FSF version of GCC differs from the Apple version
4020     if enabled altivec; then
4021         check_cflags -maltivec -mabi=altivec &&
4022         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4023         check_cflags -faltivec
4024
4025         # check if our compiler supports Motorola AltiVec C API
4026         check_cc <<EOF || disable altivec
4027 $inc_altivec_h
4028 int main(void) {
4029     vector signed int v1 = (vector signed int) { 0 };
4030     vector signed int v2 = (vector signed int) { 1 };
4031     v1 = vec_add(v1, v2);
4032     return 0;
4033 }
4034 EOF
4035
4036         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4037     fi
4038
4039     if enabled vsx; then
4040         check_cflags -mvsx &&
4041         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4042     fi
4043
4044     if enabled power8; then
4045         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4046     fi
4047
4048 elif enabled x86; then
4049
4050     check_builtin rdtsc    intrin.h   "__rdtsc()"
4051     check_builtin mm_empty mmintrin.h "_mm_empty()"
4052
4053     enable local_aligned_8 local_aligned_16
4054
4055     # check whether EBP is available on x86
4056     # As 'i' is stored on the stack, this program will crash
4057     # if the base pointer is used to access it because the
4058     # base pointer is cleared in the inline assembly code.
4059     check_exec_crash <<EOF && enable ebp_available
4060 volatile int i=0;
4061