edf89b86461d6261b06a0655eeb4832d513b2537
[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 Hardware-accelerated decoding/encoding:
143   --enable-cuda            enable dynamically linked CUDA [no]
144   --enable-libmfx          enable HW acceleration through libmfx
145   --enable-mmal            enable decoding via MMAL [no]
146   --enable-nvenc           enable encoding via NVENC [no]
147
148 Individual component options:
149   --disable-everything     disable all components listed below
150   --disable-encoder=NAME   disable encoder NAME
151   --enable-encoder=NAME    enable encoder NAME
152   --disable-encoders       disable all encoders
153   --disable-decoder=NAME   disable decoder NAME
154   --enable-decoder=NAME    enable decoder NAME
155   --disable-decoders       disable all decoders
156   --disable-hwaccel=NAME   disable hwaccel NAME
157   --enable-hwaccel=NAME    enable hwaccel NAME
158   --disable-hwaccels       disable all hwaccels
159   --disable-muxer=NAME     disable muxer NAME
160   --enable-muxer=NAME      enable muxer NAME
161   --disable-muxers         disable all muxers
162   --disable-demuxer=NAME   disable demuxer NAME
163   --enable-demuxer=NAME    enable demuxer NAME
164   --disable-demuxers       disable all demuxers
165   --enable-parser=NAME     enable parser NAME
166   --disable-parser=NAME    disable parser NAME
167   --disable-parsers        disable all parsers
168   --enable-bsf=NAME        enable bitstream filter NAME
169   --disable-bsf=NAME       disable bitstream filter NAME
170   --disable-bsfs           disable all bitstream filters
171   --enable-protocol=NAME   enable protocol NAME
172   --disable-protocol=NAME  disable protocol NAME
173   --disable-protocols      disable all protocols
174   --enable-indev=NAME      enable input device NAME
175   --disable-indev=NAME     disable input device NAME
176   --disable-indevs         disable input devices
177   --enable-outdev=NAME     enable output device NAME
178   --disable-outdev=NAME    disable output device NAME
179   --disable-outdevs        disable output devices
180   --disable-devices        disable all devices
181   --enable-filter=NAME     enable filter NAME
182   --disable-filter=NAME    disable filter NAME
183   --disable-filters        disable all filters
184
185 External library support:
186   --enable-avisynth        enable reading of AviSynth script files [no]
187   --enable-bzlib           enable bzlib [autodetect]
188   --enable-frei0r          enable frei0r video filtering
189   --enable-gnutls          enable gnutls [no]
190   --enable-libbs2b         enable bs2b DSP library [no]
191   --enable-libcdio         enable audio CD grabbing with libcdio
192   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
193                            and libraw1394 [no]
194   --enable-libdcadec       enable DCA decoding via libdcadec [no]
195   --enable-libfaac         enable AAC encoding via libfaac [no]
196   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
197   --enable-libfreetype     enable libfreetype [no]
198   --enable-libgsm          enable GSM de/encoding via libgsm [no]
199   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
200   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
201   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
202   --enable-libnpp          enable NVIDIA Performance Primitives-based code [no]
203   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
204   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
205   --enable-libopencv       enable video filtering via libopencv [no]
206   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
207   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
208   --enable-libopus         enable Opus de/encoding via libopus [no]
209   --enable-libpulse        enable Pulseaudio input via libpulse [no]
210   --enable-librtmp         enable RTMP[E] support via librtmp [no]
211   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
212   --enable-libsnappy       enable Snappy compression [no]
213   --enable-libspeex        enable Speex de/encoding via libspeex [no]
214   --enable-libtheora       enable Theora encoding via libtheora [no]
215   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
216   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
217   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
218   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
219   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
220   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
221   --enable-libwebp         enable WebP encoding via libwebp [no]
222   --enable-libx264         enable H.264 encoding via x264 [no]
223   --enable-libx265         enable HEVC encoding via x265 [no]
224   --enable-libxavs         enable AVS encoding via xavs [no]
225   --enable-libxcb          enable X11 grabbing using XCB [no]
226   --enable-libxcb-shm      enable X11 grabbing shm communication [auto]
227   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [auto]
228   --enable-libxvid         enable Xvid encoding via xvidcore,
229                            native MPEG-4/Xvid encoder exists [no]
230   --enable-openssl         enable openssl [no]
231   --enable-x11grab         enable X11 grabbing (legacy) [no]
232   --enable-zlib            enable zlib [autodetect]
233
234 Toolchain options:
235   --arch=ARCH              select architecture [$arch]
236   --cpu=CPU                select the minimum required CPU (affects
237                            instruction selection, may crash on older CPUs)
238   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
239   --enable-cross-compile   assume a cross-compiler is used
240   --sysroot=PATH           root of cross-build tree
241   --sysinclude=PATH        location of cross-build system headers
242   --target-os=OS           compiler targets OS [$target_os]
243   --target-exec=CMD        command to run executables on target
244   --target-path=DIR        path to view of build directory on target
245   --target-samples=DIR     path to samples directory on target
246   --toolchain=NAME         set tool defaults according to NAME
247   --nm=NM                  use nm tool
248   --ar=AR                  use archive tool AR [$ar_default]
249   --as=AS                  use assembler AS [$as_default]
250   --cc=CC                  use C compiler CC [$cc_default]
251   --objcc=OCC              use ObjC compiler OCC [$cc_default]
252   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
253   --ld=LD                  use linker LD
254   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
255   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
256   --host-cc=HOSTCC         use host C compiler HOSTCC
257   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
258   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
259   --host-ld=HOSTLD         use host linker HOSTLD
260   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
261   --host-libs=HLIBS        use libs HLIBS when linking for host
262   --host-os=OS             compiler host OS [$target_os]
263   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
264   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
265   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
266   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
267   --extra-libs=ELIBS       add ELIBS [$ELIBS]
268   --extra-version=STRING   version string suffix []
269   --optflags=OPTFLAGS      override optimization-related compiler flags
270   --build-suffix=SUFFIX    library name suffix []
271   --enable-pic             build position-independent code
272   --enable-thumb           compile for Thumb instruction set
273   --enable-lto             use link-time optimization
274   --env="ENV=override"     override the environment variables
275
276 Advanced options (experts only):
277   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
278   --custom-allocator=NAME  use a supported custom allocator
279   --disable-symver         disable symbol versioning
280   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
281   --disable-safe-bitstream-reader
282                            disable buffer boundary checking in bitreaders
283                            (faster, but may crash)
284   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
285   --enable-sram            allow use of on-chip SRAM
286
287 Optimization options (experts only):
288   --disable-asm            disable all assembly optimizations
289   --disable-altivec        disable AltiVec optimizations
290   --disable-vsx            disable VSX optimizations
291   --disable-power8         disable POWER8 optimizations
292   --disable-amd3dnow       disable 3DNow! optimizations
293   --disable-amd3dnowext    disable 3DNow! extended optimizations
294   --disable-mmx            disable MMX optimizations
295   --disable-mmxext         disable MMXEXT optimizations
296   --disable-sse            disable SSE optimizations
297   --disable-sse2           disable SSE2 optimizations
298   --disable-sse3           disable SSE3 optimizations
299   --disable-ssse3          disable SSSE3 optimizations
300   --disable-sse4           disable SSE4 optimizations
301   --disable-sse42          disable SSE4.2 optimizations
302   --disable-avx            disable AVX optimizations
303   --disable-xop            disable XOP optimizations
304   --disable-fma3           disable FMA3 optimizations
305   --disable-fma4           disable FMA4 optimizations
306   --disable-avx2           disable AVX2 optimizations
307   --disable-armv5te        disable armv5te optimizations
308   --disable-armv6          disable armv6 optimizations
309   --disable-armv6t2        disable armv6t2 optimizations
310   --disable-vfp            disable VFP optimizations
311   --disable-neon           disable NEON optimizations
312   --disable-inline-asm     disable use of inline assembly
313   --disable-yasm           disable use of nasm/yasm assembly
314
315 Developer options (useful when working on Libav itself):
316   --disable-debug          disable debugging symbols
317   --enable-debug=LEVEL     set the debug level [$debuglevel]
318   --disable-optimizations  disable compiler optimizations
319   --enable-extra-warnings  enable more compiler warnings
320   --samples=PATH           location of test samples for FATE, if not set use
321                            \$LIBAV_SAMPLES at make invocation time.
322   --enable-neon-clobber-test check NEON registers for clobbering (should be
323                            used only for debugging purposes)
324   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
325                            should be used only for debugging purposes)
326   --enable-random          randomly enable/disable components
327   --disable-random
328   --enable-random=LIST     randomly enable/disable specific components or
329   --disable-random=LIST    component groups. LIST is a comma-separated list
330                            of NAME[:PROB] entries where NAME is a component
331                            (group) and PROB the probability associated with
332                            NAME (default 0.5).
333   --random-seed=VALUE      seed value for --enable/disable-random
334   --disable-valgrind-backtrace do not print a backtrace under Valgrind
335                            (only applies to --disable-optimizations builds)
336
337 NOTE: Object files are built at the place where configure is launched.
338 EOF
339   exit 0
340 }
341
342 quotes='""'
343
344 log(){
345     echo "$@" >> $logfile
346 }
347
348 log_file(){
349     log BEGIN $1
350     i=1
351     while read line; do
352         printf '%5s   %s\n' "${i}" "${line}"
353         i=$(($i+1))
354     done < $1 >> $logfile
355     log END $1
356 }
357
358 echolog(){
359     log "$@"
360     echo "$@"
361 }
362
363 warn(){
364     log "WARNING: $*"
365     WARNINGS="${WARNINGS}WARNING: $*\n"
366 }
367
368 die(){
369     echolog "$@"
370     cat <<EOF
371
372 If you think configure made a mistake, make sure you are using the latest
373 version from Git.  If the latest version fails, report the problem to the
374 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
375 EOF
376     if disabled logging; then
377         cat <<EOF
378 Rerun configure with logging enabled (do not use --disable-logging), and
379 include the log this produces with your report.
380 EOF
381     else
382         cat <<EOF
383 Include the log file "$logfile" produced by configure as this will help
384 solving the problem.
385 EOF
386     fi
387     exit 1
388 }
389
390 # Avoid locale weirdness, besides we really just want to translate ASCII.
391 toupper(){
392     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
393 }
394
395 tolower(){
396     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
397 }
398
399 c_escape(){
400     echo "$*" | sed 's/["\\]/\\\0/g'
401 }
402
403 sh_quote(){
404     v=$(echo "$1" | sed "s/'/'\\\\''/g")
405     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
406     echo "$v"
407 }
408
409 cleanws(){
410     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
411 }
412
413 filter(){
414     pat=$1
415     shift
416     for v; do
417         eval "case $v in $pat) echo $v ;; esac"
418     done
419 }
420
421 filter_out(){
422     pat=$1
423     shift
424     for v; do
425         eval "case $v in $pat) ;; *) echo $v ;; esac"
426     done
427 }
428
429 map(){
430     m=$1
431     shift
432     for v; do eval $m; done
433 }
434
435 add_suffix(){
436     suffix=$1
437     shift
438     for v; do echo ${v}${suffix}; done
439 }
440
441 set_all(){
442     value=$1
443     shift
444     for var in $*; do
445         eval $var=$value
446     done
447 }
448
449 set_weak(){
450     value=$1
451     shift
452     for var; do
453         eval : \${$var:=$value}
454     done
455 }
456
457 sanitize_var_name(){
458     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
459 }
460
461 set_safe(){
462     var=$1
463     shift
464     eval $(sanitize_var_name "$var")='$*'
465 }
466
467 get_safe(){
468     eval echo \$$(sanitize_var_name "$1")
469 }
470
471 pushvar(){
472     for pvar in $*; do
473         eval level=\${${pvar}_level:=0}
474         eval ${pvar}_${level}="\$$pvar"
475         eval ${pvar}_level=$(($level+1))
476     done
477 }
478
479 popvar(){
480     for pvar in $*; do
481         eval level=\${${pvar}_level:-0}
482         test $level = 0 && continue
483         eval level=$(($level-1))
484         eval $pvar="\${${pvar}_${level}}"
485         eval ${pvar}_level=$level
486         eval unset ${pvar}_${level}
487     done
488 }
489
490 enable(){
491     set_all yes $*
492 }
493
494 disable(){
495     set_all no $*
496 }
497
498 enable_weak(){
499     set_weak yes $*
500 }
501
502 disable_weak(){
503     set_weak no $*
504 }
505
506 enable_safe(){
507     for var; do
508         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
509     done
510 }
511
512 disable_safe(){
513     for var; do
514         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
515     done
516 }
517
518 do_enable_deep(){
519     for var; do
520         enabled $var && continue
521         eval sel="\$${var}_select"
522         eval sgs="\$${var}_suggest"
523         pushvar var sgs
524         enable_deep $sel
525         popvar sgs
526         enable_deep_weak $sgs
527         popvar var
528     done
529 }
530
531 enable_deep(){
532     do_enable_deep $*
533     enable $*
534 }
535
536 enable_deep_weak(){
537     for var; do
538         disabled $var && continue
539         pushvar var
540         do_enable_deep $var
541         popvar var
542         enable_weak $var
543     done
544 }
545
546 enabled(){
547     test "${1#!}" = "$1" && op== || op=!=
548     eval test "x\$${1#!}" $op "xyes"
549 }
550
551 disabled(){
552     test "${1#!}" = "$1" && op== || op=!=
553     eval test "x\$${1#!}" $op "xno"
554 }
555
556 enabled_all(){
557     for opt; do
558         enabled $opt || return 1
559     done
560 }
561
562 disabled_all(){
563     for opt; do
564         disabled $opt || return 1
565     done
566 }
567
568 enabled_any(){
569     for opt; do
570         enabled $opt && return 0
571     done
572 }
573
574 disabled_any(){
575     for opt; do
576         disabled $opt && return 0
577     done
578     return 1
579 }
580
581 set_default(){
582     for opt; do
583         eval : \${$opt:=\$${opt}_default}
584     done
585 }
586
587 is_in(){
588     value=$1
589     shift
590     for var in $*; do
591         [ $var = $value ] && return 0
592     done
593     return 1
594 }
595
596 do_check_deps(){
597     for cfg; do
598         cfg="${cfg#!}"
599         enabled ${cfg}_checking && die "Circular dependency for $cfg."
600         disabled ${cfg}_checking && continue
601         enable ${cfg}_checking
602         append allopts $cfg
603
604         eval dep_all="\$${cfg}_deps"
605         eval dep_any="\$${cfg}_deps_any"
606         eval dep_sel="\$${cfg}_select"
607         eval dep_sgs="\$${cfg}_suggest"
608         eval dep_ifa="\$${cfg}_if"
609         eval dep_ifn="\$${cfg}_if_any"
610
611         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
612         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
613         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
614
615         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
616         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
617         enabled_all  $dep_all || disable $cfg
618         enabled_any  $dep_any || disable $cfg
619         disabled_any $dep_sel && disable $cfg
620
621         if enabled $cfg; then
622             enable_deep $dep_sel
623             enable_deep_weak $dep_sgs
624         fi
625
626         disable ${cfg}_checking
627     done
628 }
629
630 check_deps(){
631     unset allopts
632
633     do_check_deps "$@"
634
635     for cfg in $allopts; do
636         enabled $cfg || continue
637         eval dep_extralibs="\$${cfg}_extralibs"
638         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
639     done
640 }
641
642 print_config(){
643     pfx=$1
644     files=$2
645     shift 2
646     map 'eval echo "$v \${$v:-no}"' "$@" |
647     awk "BEGIN { split(\"$files\", files) }
648         {
649             c = \"$pfx\" toupper(\$1);
650             v = \$2;
651             sub(/yes/, 1, v);
652             sub(/no/,  0, v);
653             for (f in files) {
654                 file = files[f];
655                 if (file ~ /\\.h\$/) {
656                     printf(\"#define %s %d\\n\", c, v) >>file;
657                 } else if (file ~ /\\.asm\$/) {
658                     printf(\"%%define %s %d\\n\", c, v) >>file;
659                 } else if (file ~ /\\.mak\$/) {
660                     n = -v ? \"\" : \"!\";
661                     printf(\"%s%s=yes\\n\", n, c) >>file;
662                 }
663             }
664         }"
665 }
666
667 print_enabled(){
668     suf=$1
669     shift
670     for v; do
671         enabled $v && printf "%s\n" ${v%$suf}
672     done
673 }
674
675 append(){
676     var=$1
677     shift
678     eval "$var=\"\$$var $*\""
679 }
680
681 prepend(){
682     var=$1
683     shift
684     eval "$var=\"$* \$$var\""
685 }
686
687 unique(){
688     var=$1
689     uniq_list=""
690     for tok in $(eval echo \$$var); do
691         uniq_list="$(filter_out $tok $uniq_list) $tok"
692     done
693     eval "$var=\"${uniq_list}\""
694 }
695
696 add_cppflags(){
697     append CPPFLAGS "$@"
698 }
699
700 add_cflags(){
701     append CFLAGS $($cflags_filter "$@")
702 }
703
704 add_asflags(){
705     append ASFLAGS $($asflags_filter "$@")
706 }
707
708 add_objcflags(){
709     append OBJCFLAGS $($objcflags_filter "$@")
710 }
711
712 add_ldflags(){
713     append LDFLAGS $($ldflags_filter "$@")
714 }
715
716 add_ldexeflags(){
717     append LDEXEFLAGS $($ldflags_filter "$@")
718 }
719
720 add_stripflags(){
721     append STRIPFLAGS "$@"
722 }
723
724 add_extralibs(){
725     prepend extralibs $($ldflags_filter "$@")
726 }
727
728 add_host_cppflags(){
729     append host_cppflags "$@"
730 }
731
732 add_host_cflags(){
733     append host_cflags $($host_cflags_filter "$@")
734 }
735
736 add_host_ldflags(){
737     append host_ldflags $($host_ldflags_filter "$@")
738 }
739
740 add_compat(){
741     append compat_objs $1
742     shift
743     map 'add_cppflags -D$v' "$@"
744 }
745
746 check_cmd(){
747     log "$@"
748     "$@" >> $logfile 2>&1
749 }
750
751 cc_o(){
752     eval printf '%s\\n' $CC_O
753 }
754
755 cc_e(){
756     eval printf '%s\\n' $CC_E
757 }
758
759 check_cc(){
760     log check_cc "$@"
761     cat > $TMPC
762     log_file $TMPC
763     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
764 }
765
766 check_objcc(){
767     log check_objcc "$@"
768     cat > $TMPC
769     log_file $TMPC
770     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
771 }
772
773 check_cpp(){
774     log check_cpp "$@"
775     cat > $TMPC
776     log_file $TMPC
777     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
778 }
779
780 as_o(){
781     eval printf '%s\\n' $AS_O
782 }
783
784 check_as(){
785     log check_as "$@"
786     cat > $TMPS
787     log_file $TMPS
788     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
789 }
790
791 check_inline_asm(){
792     log check_inline_asm "$@"
793     name="$1"
794     code="$2"
795     shift 2
796     disable $name
797     check_cc "$@" <<EOF && enable $name
798 void foo(void){ __asm__ volatile($code); }
799 EOF
800 }
801
802 check_insn(){
803     log check_insn "$@"
804     check_inline_asm ${1}_inline "\"$2\""
805     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
806 }
807
808 check_yasm(){
809     log check_yasm "$@"
810     echo "$1" > $TMPS
811     log_file $TMPS
812     shift 1
813     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
814 }
815
816 ld_o(){
817     eval printf '%s\\n' $LD_O
818 }
819
820 check_ld(){
821     log check_ld "$@"
822     flags=$(filter_out '-l*' "$@")
823     libs=$(filter '-l*' "$@")
824     check_cc $($cflags_filter $flags) || return
825     flags=$($ldflags_filter $flags)
826     libs=$($ldflags_filter $libs)
827     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
828 }
829
830 print_include(){
831     hdr=$1
832     test "${hdr%.h}" = "${hdr}" &&
833         echo "#include $hdr"    ||
834         echo "#include <$hdr>"
835 }
836
837 check_code(){
838     log check_code "$@"
839     check=$1
840     headers=$2
841     code=$3
842     shift 3
843     {
844         for hdr in $headers; do
845             print_include $hdr
846         done
847         echo "int main(void) { $code; return 0; }"
848     } | check_$check "$@"
849 }
850
851 check_cppflags(){
852     log check_cppflags "$@"
853     check_cc "$@" <<EOF && append CPPFLAGS "$@"
854 int x;
855 EOF
856 }
857
858 test_cflags(){
859     log test_cflags "$@"
860     set -- $($cflags_filter "$@")
861     check_cc "$@" <<EOF
862 int x;
863 EOF
864 }
865
866 check_cflags(){
867     log check_cflags "$@"
868     test_cflags "$@" && add_cflags "$@"
869 }
870
871 test_objcflags(){
872     log test_cflags "$@"
873     set -- $($cflags_filter "$@")
874     check_objcc "$@" <<EOF
875 int x;
876 EOF
877 }
878
879 check_objcflags(){
880     log check_cflags "$@"
881     test_objcflags "$@" && add_objcflags "$@"
882 }
883
884 test_ldflags(){
885     log test_ldflags "$@"
886     check_ld "$@" <<EOF
887 int main(void){ return 0; }
888 EOF
889 }
890
891 check_ldflags(){
892     log check_ldflags "$@"
893     test_ldflags "$@" && add_ldflags "$@"
894 }
895
896 test_stripflags(){
897     log test_stripflags "$@"
898     # call check_cc to get a fresh TMPO
899     check_cc <<EOF
900 int main(void) { return 0; }
901 EOF
902     check_cmd $strip $STRIPFLAGS "$@" $TMPO
903 }
904
905 check_stripflags(){
906     log check_stripflags "$@"
907     test_stripflags "$@" && add_stripflags "$@"
908 }
909
910 check_header(){
911     log check_header "$@"
912     header=$1
913     shift
914     disable_safe $header
915     check_cpp "$@" <<EOF && enable_safe $header
916 #include <$header>
917 int x;
918 EOF
919 }
920
921 check_func(){
922     log check_func "$@"
923     func=$1
924     shift
925     disable $func
926     check_ld "$@" <<EOF && enable $func
927 extern int $func();
928 int main(void){ $func(); }
929 EOF
930 }
931
932 check_mathfunc(){
933     log check_mathfunc "$@"
934     func=$1
935     narg=$2
936     shift 2
937     test $narg = 2 && args="f, g" || args="f"
938     disable $func
939     check_ld "$@" <<EOF && enable $func
940 #include <math.h>
941 float foo(float f, float g) { return $func($args); }
942 int main(void){ return 0; }
943 EOF
944 }
945
946 check_func_headers(){
947     log check_func_headers "$@"
948     headers=$1
949     funcs=$2
950     shift 2
951     {
952         for hdr in $headers; do
953             print_include $hdr
954         done
955         for func in $funcs; do
956             echo "long check_$func(void) { return (long) $func; }"
957         done
958         echo "int main(void) { return 0; }"
959     } | check_ld "$@" && enable $funcs && enable_safe $headers
960 }
961
962 check_cpp_condition(){
963     log check_cpp_condition "$@"
964     header=$1
965     condition=$2
966     shift 2
967     check_cpp "$@" <<EOF
968 #include <$header>
969 #if !($condition)
970 #error "unsatisfied condition: $condition"
971 #endif
972 EOF
973 }
974
975 check_lib(){
976     log check_lib "$@"
977     header="$1"
978     func="$2"
979     shift 2
980     check_header $header && check_func $func "$@" && add_extralibs "$@"
981 }
982
983 check_lib2(){
984     log check_lib2 "$@"
985     headers="$1"
986     funcs="$2"
987     shift 2
988     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
989 }
990
991 check_pkg_config(){
992     log check_pkg_config "$@"
993     pkg="$1"
994     headers="$2"
995     funcs="$3"
996     shift 3
997     check_cmd $pkg_config --exists --print-errors $pkg || return
998     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
999     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1000     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1001         set_safe "${pkg}_cflags" $pkg_cflags   &&
1002         set_safe "${pkg}_libs"   $pkg_libs
1003 }
1004
1005 check_exec(){
1006     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1007 }
1008
1009 check_exec_crash(){
1010     code=$(cat)
1011
1012     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1013     # are safe but may not be available everywhere.  Thus we use
1014     # raise(SIGTERM) instead.  The check is run in a subshell so we
1015     # can redirect the "Terminated" message from the shell.  SIGBUS
1016     # is not defined by standard C so it is used conditionally.
1017
1018     (check_exec "$@") >> $logfile 2>&1 <<EOF
1019 #include <signal.h>
1020 static void sighandler(int sig){
1021     raise(SIGTERM);
1022 }
1023 int foo(void){
1024     $code
1025 }
1026 int (*func_ptr)(void) = foo;
1027 int main(void){
1028     signal(SIGILL, sighandler);
1029     signal(SIGFPE, sighandler);
1030     signal(SIGSEGV, sighandler);
1031 #ifdef SIGBUS
1032     signal(SIGBUS, sighandler);
1033 #endif
1034     return func_ptr();
1035 }
1036 EOF
1037 }
1038
1039 check_type(){
1040     log check_type "$@"
1041     headers=$1
1042     type=$2
1043     shift 2
1044     disable_safe "$type"
1045     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1046 }
1047
1048 check_struct(){
1049     log check_struct "$@"
1050     headers=$1
1051     struct=$2
1052     member=$3
1053     shift 3
1054     disable_safe "${struct}_${member}"
1055     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1056         enable_safe "${struct}_${member}"
1057 }
1058
1059 check_builtin(){
1060     log check_builtin "$@"
1061     name=$1
1062     headers=$2
1063     builtin=$3
1064     shift 3
1065     disable "$name"
1066     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1067 }
1068
1069 check_compile_assert(){
1070     log check_compile_assert "$@"
1071     name=$1
1072     headers=$2
1073     condition=$3
1074     shift 3
1075     disable "$name"
1076     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1077 }
1078
1079 require(){
1080     name="$1"
1081     header="$2"
1082     func="$3"
1083     shift 3
1084     check_lib $header $func "$@" || die "ERROR: $name not found"
1085 }
1086
1087 require2(){
1088     name="$1"
1089     headers="$2"
1090     func="$3"
1091     shift 3
1092     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1093 }
1094
1095 require_pkg_config(){
1096     pkg="$1"
1097     check_pkg_config "$@" || die "ERROR: $pkg not found"
1098     add_cflags    $(get_safe "${pkg}_cflags")
1099     add_extralibs $(get_safe "${pkg}_libs")
1100 }
1101
1102 hostcc_e(){
1103     eval printf '%s\\n' $HOSTCC_E
1104 }
1105
1106 hostcc_o(){
1107     eval printf '%s\\n' $HOSTCC_O
1108 }
1109
1110 check_host_cc(){
1111     log check_host_cc "$@"
1112     cat > $TMPC
1113     log_file $TMPC
1114     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1115 }
1116
1117 check_host_cpp(){
1118     log check_host_cpp "$@"
1119     cat > $TMPC
1120     log_file $TMPC
1121     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1122 }
1123
1124 check_host_cppflags(){
1125     log check_host_cppflags "$@"
1126     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1127 int x;
1128 EOF
1129 }
1130
1131 check_host_cflags(){
1132     log check_host_cflags "$@"
1133     set -- $($host_cflags_filter "$@")
1134     check_host_cc "$@" <<EOF && append host_cflags "$@"
1135 int x;
1136 EOF
1137 }
1138
1139 check_host_cpp_condition(){
1140     log check_host_cpp_condition "$@"
1141     header=$1
1142     condition=$2
1143     shift 2
1144     check_host_cpp "$@" <<EOF
1145 #include <$header>
1146 #if !($condition)
1147 #error "unsatisfied condition: $condition"
1148 #endif
1149 EOF
1150 }
1151
1152 apply(){
1153     file=$1
1154     shift
1155     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1156 }
1157
1158 cp_if_changed(){
1159     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1160     mkdir -p "$(dirname $2)"
1161     $cp_f "$1" "$2"
1162 }
1163
1164 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1165 # system-dependent things.
1166
1167 AVCODEC_COMPONENTS="
1168     bsfs
1169     decoders
1170     encoders
1171     hwaccels
1172     parsers
1173 "
1174
1175 AVDEVICE_COMPONENTS="
1176     indevs
1177     outdevs
1178 "
1179 AVFILTER_COMPONENTS="
1180     filters
1181 "
1182 AVFORMAT_COMPONENTS="
1183     demuxers
1184     muxers
1185     protocols
1186 "
1187
1188 AVRESAMPLE_COMPONENTS=""
1189 AVUTIL_COMPONENTS=""
1190
1191 COMPONENT_LIST="
1192     $AVCODEC_COMPONENTS
1193     $AVDEVICE_COMPONENTS
1194     $AVFILTER_COMPONENTS
1195     $AVFORMAT_COMPONENTS
1196     $AVRESAMPLE_COMPONENTS
1197     $AVUTIL_COMPONENTS
1198 "
1199
1200 EXAMPLE_LIST="
1201     avcodec_example
1202     filter_audio_example
1203     metadata_example
1204     output_example
1205     qsvdec_example
1206     transcode_aac_example
1207 "
1208
1209 EXTERNAL_LIBRARY_LIST="
1210     avisynth
1211     bzlib
1212     frei0r
1213     gnutls
1214     libbs2b
1215     libcdio
1216     libdc1394
1217     libdcadec
1218     libfaac
1219     libfdk_aac
1220     libfontconfig
1221     libfreetype
1222     libgsm
1223     libilbc
1224     libkvazaar
1225     libmp3lame
1226     libnpp
1227     libopencore_amrnb
1228     libopencore_amrwb
1229     libopencv
1230     libopenh264
1231     libopenjpeg
1232     libopus
1233     libpulse
1234     librtmp
1235     libschroedinger
1236     libsnappy
1237     libspeex
1238     libtheora
1239     libtwolame
1240     libvo_aacenc
1241     libvo_amrwbenc
1242     libvorbis
1243     libvpx
1244     libwavpack
1245     libwebp
1246     libx264
1247     libx265
1248     libxavs
1249     libxcb
1250     libxcb_shm
1251     libxcb_xfixes
1252     libxvid
1253     openssl
1254     x11grab
1255     zlib
1256 "
1257
1258 FEATURE_LIST="
1259     gray
1260     hardcoded_tables
1261     runtime_cpudetect
1262     safe_bitstream_reader
1263     shared
1264     small
1265     sram
1266     static
1267     swscale_alpha
1268 "
1269
1270 HW_CODECS_LIST="
1271     cuda
1272     libmfx
1273     mmal
1274     nvenc
1275 "
1276
1277 HWACCEL_LIST="
1278     d3d11va
1279     dxva2
1280     vaapi
1281     vda
1282     vdpau
1283 "
1284
1285 LIBRARY_LIST="
1286     avcodec
1287     avdevice
1288     avfilter
1289     avformat
1290     avresample
1291     avutil
1292     swscale
1293 "
1294
1295 LICENSE_LIST="
1296     gpl
1297     nonfree
1298     version3
1299 "
1300
1301 PROGRAM_LIST="
1302     avconv
1303     avplay
1304     avprobe
1305 "
1306
1307 SUBSYSTEM_LIST="
1308     dct
1309     doc
1310     error_resilience
1311     faan
1312     fft
1313     lsp
1314     lzo
1315     mdct
1316     network
1317     rdft
1318 "
1319
1320 CONFIG_LIST="
1321     $COMPONENT_LIST
1322     $EXAMPLE_LIST
1323     $EXTERNAL_LIBRARY_LIST
1324     $FEATURE_LIST
1325     $HW_CODECS_LIST
1326     $HWACCEL_LIST
1327     $LICENSE_LIST
1328     $LIBRARY_LIST
1329     $PROGRAM_LIST
1330     $SUBSYSTEM_LIST
1331     memalign_hack
1332     neon_clobber_test
1333     pic
1334     pod2man
1335     texi2html
1336     thumb
1337     valgrind_backtrace
1338     xmm_clobber_test
1339 "
1340
1341 THREADS_LIST="
1342     pthreads
1343     w32threads
1344 "
1345
1346 ATOMICS_LIST="
1347     atomics_gcc
1348     atomics_suncc
1349     atomics_win32
1350 "
1351
1352 ARCH_LIST="
1353     aarch64
1354     alpha
1355     arm
1356     avr32
1357     avr32_ap
1358     avr32_uc
1359     bfin
1360     ia64
1361     m68k
1362     mips
1363     mips64
1364     parisc
1365     ppc
1366     ppc64
1367     s390
1368     sh4
1369     sparc
1370     sparc64
1371     tilegx
1372     tilepro
1373     tomi
1374     x86
1375     x86_32
1376     x86_64
1377 "
1378
1379 ARCH_EXT_LIST_ARM="
1380     armv5te
1381     armv6
1382     armv6t2
1383     armv8
1384     neon
1385     vfp
1386     vfpv3
1387 "
1388
1389 ARCH_EXT_LIST_X86_SIMD="
1390     amd3dnow
1391     amd3dnowext
1392     avx
1393     avx2
1394     fma3
1395     fma4
1396     mmx
1397     mmxext
1398     sse
1399     sse2
1400     sse3
1401     sse4
1402     sse42
1403     ssse3
1404     xop
1405 "
1406
1407 ARCH_EXT_LIST_PPC="
1408     altivec
1409     dcbzl
1410     ldbrx
1411     power8
1412     ppc4xx
1413     vsx
1414 "
1415
1416 ARCH_EXT_LIST_X86="
1417     $ARCH_EXT_LIST_X86_SIMD
1418     cpunop
1419     i686
1420 "
1421
1422 ARCH_EXT_LIST_MIPS="
1423     loongson
1424     mips32r1
1425     mips64r1
1426     mips32r2
1427     mips64r2
1428     mips32r6
1429     mips64r6
1430 "
1431
1432 ARCH_EXT_LIST="
1433     $ARCH_EXT_LIST_ARM
1434     $ARCH_EXT_LIST_MIPS
1435     $ARCH_EXT_LIST_PPC
1436     $ARCH_EXT_LIST_X86
1437     vis
1438 "
1439
1440 ARCH_FEATURES="
1441     aligned_stack
1442     fast_64bit
1443     fast_clz
1444     fast_cmov
1445     local_aligned_8
1446     local_aligned_16
1447     simd_align_16
1448 "
1449
1450 BUILTIN_LIST="
1451     atomic_cas_ptr
1452     machine_rw_barrier
1453     MemoryBarrier
1454     mm_empty
1455     rdtsc
1456     sem_timedwait
1457     sync_val_compare_and_swap
1458 "
1459 HAVE_LIST_CMDLINE="
1460     inline_asm
1461     symver
1462     yasm
1463 "
1464
1465 HAVE_LIST_PUB="
1466     bigendian
1467     fast_unaligned
1468 "
1469
1470 HEADERS_LIST="
1471     AVFoundation_AVFoundation_h
1472     alsa_asoundlib_h
1473     altivec_h
1474     arpa_inet_h
1475     cdio_paranoia_h
1476     cdio_paranoia_paranoia_h
1477     dispatch_dispatch_h
1478     dev_bktr_ioctl_bt848_h
1479     dev_bktr_ioctl_meteor_h
1480     dev_ic_bt8xx_h
1481     dev_video_bktr_ioctl_bt848_h
1482     dev_video_meteor_ioctl_meteor_h
1483     direct_h
1484     dlfcn_h
1485     d3d11_h
1486     dxva_h
1487     gsm_h
1488     io_h
1489     mach_mach_time_h
1490     machine_ioctl_bt848_h
1491     machine_ioctl_meteor_h
1492     malloc_h
1493     poll_h
1494     sndio_h
1495     soundcard_h
1496     sys_mman_h
1497     sys_param_h
1498     sys_resource_h
1499     sys_select_h
1500     sys_soundcard_h
1501     sys_time_h
1502     sys_un_h
1503     sys_videoio_h
1504     unistd_h
1505     valgrind_valgrind_h
1506     windows_h
1507     winsock2_h
1508 "
1509
1510 INTRINSICS_LIST="
1511     intrinsics_neon
1512 "
1513
1514 MATH_FUNCS="
1515     atanf
1516     atan2f
1517     cbrtf
1518     cosf
1519     exp2
1520     exp2f
1521     expf
1522     isinf
1523     isnan
1524     ldexpf
1525     llrint
1526     llrintf
1527     log2
1528     log2f
1529     log10f
1530     lrint
1531     lrintf
1532     powf
1533     rint
1534     round
1535     roundf
1536     sinf
1537     trunc
1538     truncf
1539 "
1540
1541 SYSTEM_FUNCS="
1542     aligned_malloc
1543     clock_gettime
1544     closesocket
1545     CommandLineToArgvW
1546     CoTaskMemFree
1547     CryptGenRandom
1548     dlopen
1549     fcntl
1550     flt_lim
1551     fork
1552     getaddrinfo
1553     gethrtime
1554     getopt
1555     GetProcessAffinityMask
1556     GetProcessMemoryInfo
1557     GetProcessTimes
1558     getrusage
1559     GetSystemTimeAsFileTime
1560     gettimeofday
1561     gmtime_r
1562     inet_aton
1563     isatty
1564     jack_port_get_latency_range
1565     LoadLibrary
1566     localtime_r
1567     mach_absolute_time
1568     MapViewOfFile
1569     memalign
1570     mkstemp
1571     mmap
1572     mprotect
1573     nanosleep
1574     posix_memalign
1575     sched_getaffinity
1576     SetConsoleTextAttribute
1577     setmode
1578     setrlimit
1579     Sleep
1580     strerror_r
1581     sysconf
1582     sysctl
1583     usleep
1584     VirtualAlloc
1585 "
1586
1587 TOOLCHAIN_FEATURES="
1588     as_dn_directive
1589     as_func
1590     as_object_arch
1591     asm_mod_q
1592     attribute_may_alias
1593     attribute_packed
1594     ebp_available
1595     ebx_available
1596     gnu_as
1597     ibm_asm
1598     inline_asm_labels
1599     pragma_deprecated
1600     symver_asm_label
1601     symver_gnu_asm
1602     vfp_args
1603     xform_asm
1604     xmm_clobbers
1605 "
1606
1607 TYPES_LIST="
1608     CONDITION_VARIABLE_Ptr
1609     socklen_t
1610     struct_addrinfo
1611     struct_group_source_req
1612     struct_ip_mreq_source
1613     struct_ipv6_mreq
1614     struct_pollfd
1615     struct_rusage_ru_maxrss
1616     struct_sockaddr_in6
1617     struct_sockaddr_sa_len
1618     struct_sockaddr_storage
1619     struct_v4l2_frmivalenum_discrete
1620 "
1621
1622 HAVE_LIST="
1623     $ARCH_EXT_LIST
1624     $(add_suffix _external $ARCH_EXT_LIST)
1625     $(add_suffix _inline   $ARCH_EXT_LIST)
1626     $ARCH_FEATURES
1627     $ATOMICS_LIST
1628     $BUILTIN_LIST
1629     $HAVE_LIST_CMDLINE
1630     $HAVE_LIST_PUB
1631     $HEADERS_LIST
1632     $INTRINSICS_LIST
1633     $MATH_FUNCS
1634     $SYSTEM_FUNCS
1635     $THREADS_LIST
1636     $TOOLCHAIN_FEATURES
1637     $TYPES_LIST
1638     atomics_native
1639     dos_paths
1640     dxva2_lib
1641     libc_msvcrt
1642     libdc1394_1
1643     libdc1394_2
1644     sdl
1645     section_data_rel_ro
1646     threads
1647     vaapi_drm
1648     vaapi_x11
1649     vdpau_x11
1650     xlib
1651 "
1652
1653 # options emitted with CONFIG_ prefix but not available on the command line
1654 CONFIG_EXTRA="
1655     aandcttables
1656     ac3dsp
1657     audio_frame_queue
1658     audiodsp
1659     blockdsp
1660     bswapdsp
1661     cabac
1662     dirac_parse
1663     dvprofile
1664     faandct
1665     faanidct
1666     fdctdsp
1667     flacdsp
1668     fmtconvert
1669     g722dsp
1670     gcrypt
1671     gmp
1672     golomb
1673     gplv3
1674     h263dsp
1675     h264chroma
1676     h264dsp
1677     h264pred
1678     h264qpel
1679     hpeldsp
1680     huffman
1681     huffyuvdsp
1682     huffyuvencdsp
1683     idctdsp
1684     iirfilter
1685     imdct15
1686     intrax8
1687     iso_media
1688     ividsp
1689     jpegtables
1690     libx262
1691     lgplv3
1692     lpc
1693     lzf
1694     me_cmp
1695     mpeg_er
1696     mpegaudio
1697     mpegaudiodsp
1698     mpegvideo
1699     mpegvideoenc
1700     mss34dsp
1701     pixblockdsp
1702     qpeldsp
1703     qsv
1704     qsvdec
1705     qsvenc
1706     rangecoder
1707     riffdec
1708     riffenc
1709     rtpdec
1710     rtpenc_chain
1711     rv34dsp
1712     sinewin
1713     snappy
1714     srtp
1715     startcode
1716     texturedsp
1717     texturedspenc
1718     tpeldsp
1719     vaapi_encode
1720     vc1dsp
1721     videodsp
1722     vp3dsp
1723     vp56dsp
1724     vp8dsp
1725     wma_freqs
1726     wmv2dsp
1727 "
1728
1729 CMDLINE_SELECT="
1730     $ARCH_EXT_LIST
1731     $CONFIG_LIST
1732     $HAVE_LIST_CMDLINE
1733     $THREADS_LIST
1734     asm
1735     cross_compile
1736     debug
1737     extra_warnings
1738     logging
1739     lto
1740     optimizations
1741     rpath
1742 "
1743
1744 PATHS_LIST="
1745     bindir
1746     datadir
1747     docdir
1748     incdir
1749     libdir
1750     mandir
1751     prefix
1752     shlibdir
1753 "
1754
1755 CMDLINE_SET="
1756     $PATHS_LIST
1757     ar
1758     arch
1759     as
1760     build_suffix
1761     cc
1762     objcc
1763     cpu
1764     cross_prefix
1765     custom_allocator
1766     dep_cc
1767     env
1768     extra_version
1769     host_cc
1770     host_cflags
1771     host_ld
1772     host_ldflags
1773     host_libs
1774     host_os
1775     ld
1776     logfile
1777     malloc_prefix
1778     nm
1779     optflags
1780     pkg_config
1781     pkg_config_flags
1782     random_seed
1783     samples
1784     sysinclude
1785     sysroot
1786     target_exec
1787     target_os
1788     target_path
1789     target_samples
1790     toolchain
1791 "
1792
1793 CMDLINE_APPEND="
1794     extra_cflags
1795     extra_objcflags
1796     host_cppflags
1797 "
1798
1799 # code dependency declarations
1800
1801 # architecture extensions
1802
1803 armv5te_deps="arm"
1804 armv6_deps="arm"
1805 armv6t2_deps="arm"
1806 armv8_deps="aarch64"
1807 neon_deps_any="aarch64 arm"
1808 intrinsics_neon_deps="neon"
1809 vfp_deps_any="aarch64 arm"
1810 vfpv3_deps="vfp"
1811
1812 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1813
1814 altivec_deps="ppc"
1815 ppc4xx_deps="ppc"
1816 vsx_deps="altivec"
1817 power8_deps="vsx"
1818
1819 cpunop_deps="i686"
1820 x86_64_select="i686"
1821 x86_64_suggest="fast_cmov"
1822
1823 amd3dnow_deps="mmx"
1824 amd3dnowext_deps="amd3dnow"
1825 i686_deps="x86"
1826 mmx_deps="x86"
1827 mmxext_deps="mmx"
1828 sse_deps="mmxext"
1829 sse2_deps="sse"
1830 sse3_deps="sse2"
1831 ssse3_deps="sse3"
1832 sse4_deps="ssse3"
1833 sse42_deps="sse4"
1834 avx_deps="sse42"
1835 xop_deps="avx"
1836 fma3_deps="avx"
1837 fma4_deps="avx"
1838 avx2_deps="avx"
1839
1840 mmx_external_deps="yasm"
1841 mmx_inline_deps="inline_asm"
1842 mmx_suggest="mmx_external mmx_inline"
1843
1844 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1845     eval dep=\$${ext}_deps
1846     eval ${ext}_external_deps='"${dep}_external"'
1847     eval ${ext}_inline_deps='"${dep}_inline"'
1848     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1849 done
1850
1851 aligned_stack_if_any="aarch64 ppc x86"
1852 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1853 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1854 fast_unaligned_if_any="aarch64 ppc x86"
1855 simd_align_16_if_any="altivec neon sse"
1856
1857 # system capabilities
1858 symver_if_any="symver_asm_label symver_gnu_asm"
1859 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1860
1861 # threading support
1862 atomics_gcc_if="sync_val_compare_and_swap"
1863 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1864 atomics_win32_if="MemoryBarrier"
1865 atomics_native_if_any="$ATOMICS_LIST"
1866 w32threads_deps="atomics_native"
1867 threads_if_any="$THREADS_LIST"
1868
1869 # subsystems
1870 dct_select="rdft"
1871 dirac_parse_select="golomb"
1872 error_resilience_select="me_cmp"
1873 faandct_deps="faan fdctdsp"
1874 faanidct_deps="faan idctdsp"
1875 h264dsp_select="startcode"
1876 intrax8_select="blockdsp idctdsp"
1877 mdct_select="fft"
1878 rdft_select="fft"
1879 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1880 mpeg_er_select="error_resilience"
1881 mpegaudio_select="mpegaudiodsp"
1882 mpegaudiodsp_select="dct"
1883 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1884 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1885 vc1dsp_select="h264chroma qpeldsp startcode"
1886
1887 # decoders / encoders
1888 aac_decoder_select="imdct15 mdct sinewin"
1889 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1890 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1891 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1892 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1893 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1894 adpcm_g722_decoder_select="g722dsp"
1895 adpcm_g722_encoder_select="g722dsp"
1896 aic_decoder_select="golomb idctdsp"
1897 alac_encoder_select="lpc"
1898 als_decoder_select="bswapdsp"
1899 amrnb_decoder_select="lsp"
1900 amrwb_decoder_select="lsp"
1901 amv_decoder_select="sp5x_decoder"
1902 ape_decoder_select="bswapdsp"
1903 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1904 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1905 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1906 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1907 atrac1_decoder_select="mdct sinewin"
1908 atrac3_decoder_select="mdct"
1909 atrac3p_decoder_select="mdct sinewin"
1910 bink_decoder_select="blockdsp hpeldsp"
1911 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1912 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1913 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1914 cllc_decoder_select="bswapdsp"
1915 comfortnoise_encoder_select="lpc"
1916 cook_decoder_select="audiodsp mdct sinewin"
1917 cscd_decoder_select="lzo"
1918 cscd_decoder_suggest="zlib"
1919 dca_decoder_select="fmtconvert mdct"
1920 dds_decoder_select="texturedsp"
1921 dnxhd_decoder_select="blockdsp idctdsp"
1922 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1923 dvvideo_decoder_select="dvprofile idctdsp"
1924 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1925 dxa_decoder_deps="zlib"
1926 dxv_decoder_select="lzf texturedsp"
1927 eac3_decoder_select="ac3_decoder"
1928 eac3_encoder_select="ac3_encoder"
1929 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1930 eatgq_decoder_select="aandcttables idctdsp"
1931 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
1932 exr_decoder_deps="zlib"
1933 ffv1_decoder_select="golomb rangecoder"
1934 ffv1_encoder_select="rangecoder"
1935 ffvhuff_decoder_select="huffyuv_decoder"
1936 ffvhuff_encoder_select="huffyuv_encoder"
1937 fic_decoder_select="golomb"
1938 flac_decoder_select="flacdsp golomb"
1939 flac_encoder_select="bswapdsp flacdsp golomb lpc"
1940 flashsv_decoder_deps="zlib"
1941 flashsv_encoder_deps="zlib"
1942 flashsv2_decoder_deps="zlib"
1943 flv_decoder_select="h263_decoder"
1944 flv_encoder_select="h263_encoder"
1945 fourxm_decoder_select="blockdsp bswapdsp"
1946 fraps_decoder_select="bswapdsp huffman"
1947 g2m_decoder_deps="zlib"
1948 g2m_decoder_select="blockdsp idctdsp jpegtables"
1949 h261_decoder_select="mpeg_er mpegvideo"
1950 h261_encoder_select="aandcttables mpegvideoenc"
1951 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1952 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1953 h263i_decoder_select="h263_decoder"
1954 h263p_encoder_select="h263_encoder"
1955 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
1956 h264_decoder_suggest="error_resilience"
1957 hap_decoder_select="snappy texturedsp"
1958 hap_encoder_deps="libsnappy"
1959 hap_encoder_select="texturedspenc"
1960 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1961 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1962 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1963 iac_decoder_select="imc_decoder"
1964 imc_decoder_select="bswapdsp fft mdct sinewin"
1965 indeo3_decoder_select="hpeldsp"
1966 indeo4_decoder_select="ividsp"
1967 indeo5_decoder_select="ividsp"
1968 interplay_video_decoder_select="hpeldsp"
1969 jpegls_decoder_select="golomb mjpeg_decoder"
1970 jpegls_encoder_select="golomb"
1971 jv_decoder_select="blockdsp"
1972 lagarith_decoder_select="huffyuvdsp"
1973 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
1974 loco_decoder_select="golomb"
1975 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1976 metasound_decoder_select="lsp mdct sinewin"
1977 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1978 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
1979 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
1980 mjpegb_decoder_select="mjpeg_decoder"
1981 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
1982 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
1983 mlp_decoder_select="mlp_parser"
1984 motionpixels_decoder_select="bswapdsp"
1985 mp1_decoder_select="mpegaudio"
1986 mp1float_decoder_select="mpegaudio"
1987 mp2_decoder_select="mpegaudio"
1988 mp2float_decoder_select="mpegaudio"
1989 mp3_decoder_select="mpegaudio"
1990 mp3adu_decoder_select="mpegaudio"
1991 mp3adufloat_decoder_select="mpegaudio"
1992 mp3float_decoder_select="mpegaudio"
1993 mp3on4_decoder_select="mpegaudio"
1994 mp3on4float_decoder_select="mpegaudio"
1995 mpc7_decoder_select="bswapdsp mpegaudiodsp"
1996 mpc8_decoder_select="mpegaudiodsp"
1997 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1998 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1999 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2000 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2001 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2002 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2003 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2004 mpeg4_encoder_select="h263_encoder"
2005 msa1_decoder_select="mss34dsp"
2006 msmpeg4v1_decoder_select="h263_decoder"
2007 msmpeg4v2_decoder_select="h263_decoder"
2008 msmpeg4v2_encoder_select="h263_encoder"
2009 msmpeg4v3_decoder_select="h263_decoder"
2010 msmpeg4v3_encoder_select="h263_encoder"
2011 mss2_decoder_select="error_resilience mpeg_er mpegvideo vc1_decoder"
2012 mts2_decoder_select="mss34dsp"
2013 mxpeg_decoder_select="mjpeg_decoder"
2014 nellymoser_decoder_select="mdct sinewin"
2015 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2016 nuv_decoder_select="idctdsp lzo"
2017 on2avc_decoder_select="mdct"
2018 opus_decoder_deps="avresample"
2019 opus_decoder_select="imdct15"
2020 png_decoder_deps="zlib"
2021 png_encoder_deps="zlib"
2022 png_encoder_select="huffyuvencdsp"
2023 prores_decoder_select="idctdsp"
2024 prores_encoder_select="fdctdsp"
2025 qcelp_decoder_select="lsp"
2026 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2027 ra_144_encoder_select="audio_frame_queue lpc"
2028 ralf_decoder_select="golomb"
2029 rscc_decoder_deps="zlib"
2030 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2031 rv10_encoder_select="h263_encoder"
2032 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2033 rv20_encoder_select="h263_encoder"
2034 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2035 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2036 screenpresso_decoder_deps="zlib"
2037 shorten_decoder_select="golomb"
2038 sipr_decoder_select="lsp"
2039 sp5x_decoder_select="mjpeg_decoder"
2040 svq1_decoder_select="hpeldsp"
2041 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2042 svq3_decoder_select="golomb h264dsp h264pred hpeldsp tpeldsp videodsp"
2043 svq3_decoder_suggest="zlib"
2044 tak_decoder_select="audiodsp"
2045 tdsc_decoder_deps="zlib"
2046 tdsc_decoder_select="mjpeg_decoder"
2047 theora_decoder_select="vp3_decoder"
2048 thp_decoder_select="mjpeg_decoder"
2049 tiff_decoder_suggest="zlib"
2050 tiff_encoder_suggest="zlib"
2051 truehd_decoder_select="mlp_decoder"
2052 truemotion2_decoder_select="bswapdsp"
2053 truespeech_decoder_select="bswapdsp"
2054 tscc_decoder_deps="zlib"
2055 txd_decoder_select="texturedsp"
2056 twinvq_decoder_select="mdct lsp sinewin"
2057 utvideo_decoder_select="bswapdsp"
2058 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2059 vble_decoder_select="huffyuvdsp"
2060 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2061 vc1image_decoder_select="vc1_decoder"
2062 vorbis_decoder_select="mdct"
2063 vorbis_encoder_select="mdct"
2064 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2065 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2066 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2067 vp6a_decoder_select="vp6_decoder"
2068 vp6f_decoder_select="vp6_decoder"
2069 vp7_decoder_select="h264pred videodsp vp8dsp"
2070 vp8_decoder_select="h264pred videodsp vp8dsp"
2071 vp9_decoder_select="videodsp"
2072 webp_decoder_select="vp8_decoder"
2073 wmapro_decoder_select="mdct sinewin wma_freqs"
2074 wmav1_decoder_select="mdct sinewin wma_freqs"
2075 wmav1_encoder_select="mdct sinewin wma_freqs"
2076 wmav2_decoder_select="mdct sinewin wma_freqs"
2077 wmav2_encoder_select="mdct sinewin wma_freqs"
2078 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2079 wmv1_decoder_select="h263_decoder"
2080 wmv1_encoder_select="h263_encoder"
2081 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2082 wmv2_encoder_select="h263_encoder wmv2dsp"
2083 wmv3_decoder_select="vc1_decoder"
2084 wmv3image_decoder_select="wmv3_decoder"
2085 zerocodec_decoder_deps="zlib"
2086 zlib_decoder_deps="zlib"
2087 zlib_encoder_deps="zlib"
2088 zmbv_decoder_deps="zlib"
2089 zmbv_encoder_deps="zlib"
2090
2091 # hardware accelerators
2092 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2093 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2094 vaapi_deps="va_va_h"
2095 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2096 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2097 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2098
2099 h263_vaapi_hwaccel_deps="vaapi"
2100 h263_vaapi_hwaccel_select="h263_decoder"
2101 h264_d3d11va_hwaccel_deps="d3d11va"
2102 h264_d3d11va_hwaccel_select="h264_decoder"
2103 h264_dxva2_hwaccel_deps="dxva2"
2104 h264_dxva2_hwaccel_select="h264_decoder"
2105 h264_mmal_decoder_deps="mmal"
2106 h264_mmal_hwaccel_deps="mmal"
2107 h264_mmal_decoder_select="h264_decoder"
2108 h264_mmal_encoder_deps="mmal"
2109 h264_qsv_hwaccel_deps="libmfx"
2110 h264_vaapi_hwaccel_deps="vaapi"
2111 h264_vaapi_hwaccel_select="h264_decoder"
2112 h264_vda_hwaccel_deps="vda"
2113 h264_vda_hwaccel_select="h264_decoder"
2114 h264_vda_old_hwaccel_deps="vda"
2115 h264_vda_old_hwaccel_select="h264_decoder"
2116 h264_vdpau_hwaccel_deps="vdpau"
2117 h264_vdpau_hwaccel_select="h264_decoder"
2118 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2119 hevc_d3d11va_hwaccel_select="hevc_decoder"
2120 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2121 hevc_dxva2_hwaccel_select="hevc_decoder"
2122 hevc_qsv_hwaccel_deps="libmfx"
2123 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2124 hevc_vdpau_hwaccel_select="hevc_decoder"
2125 mpeg1_vdpau_hwaccel_deps="vdpau"
2126 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2127 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2128 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2129 mpeg2_dxva2_hwaccel_deps="dxva2"
2130 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2131 mpeg2_qsv_hwaccel_deps="libmfx"
2132 mpeg2_vaapi_hwaccel_deps="vaapi"
2133 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2134 mpeg2_vdpau_hwaccel_deps="vdpau"
2135 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2136 mpeg4_vaapi_hwaccel_deps="vaapi"
2137 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2138 mpeg4_vdpau_hwaccel_deps="vdpau"
2139 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2140 vc1_d3d11va_hwaccel_deps="d3d11va"
2141 vc1_d3d11va_hwaccel_select="vc1_decoder"
2142 vc1_dxva2_hwaccel_deps="dxva2"
2143 vc1_dxva2_hwaccel_select="vc1_decoder"
2144 vc1_vaapi_hwaccel_deps="vaapi"
2145 vc1_vaapi_hwaccel_select="vc1_decoder"
2146 vc1_vdpau_hwaccel_deps="vdpau"
2147 vc1_vdpau_hwaccel_select="vc1_decoder"
2148 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2149 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2150 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2151 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2152
2153 # hardware-accelerated codecs
2154 nvenc_deps_any="dlopen LoadLibrary"
2155 nvenc_extralibs='$ldl'
2156 qsvdec_select="qsv"
2157 qsvenc_select="qsv"
2158 vaapi_encode_deps="vaapi"
2159
2160 hwupload_cuda_filter_deps="cuda"
2161 scale_npp_filter_deps="cuda libnpp"
2162
2163 h264_nvenc_encoder_deps="nvenc"
2164 h264_qsv_decoder_deps="libmfx"
2165 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2166 h264_qsv_encoder_deps="libmfx"
2167 h264_qsv_encoder_select="qsvenc"
2168 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2169 h264_vaapi_encoder_select="vaapi_encode golomb"
2170
2171 hevc_nvenc_encoder_deps="nvenc"
2172 hevc_qsv_decoder_deps="libmfx"
2173 hevc_qsv_encoder_deps="libmfx"
2174 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2175 hevc_qsv_encoder_select="qsvenc"
2176 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2177 hevc_vaapi_encoder_select="vaapi_encode golomb"
2178 mpeg2_qsv_decoder_deps="libmfx"
2179 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2180 mpeg2_qsv_encoder_deps="libmfx"
2181 mpeg2_qsv_encoder_select="qsvenc"
2182
2183 nvenc_h264_encoder_deps="nvenc"
2184 nvenc_hevc_encoder_deps="nvenc"
2185
2186 # parsers
2187 h264_parser_select="h264_decoder"
2188 hevc_parser_select="golomb"
2189 mpegvideo_parser_select="mpegvideo"
2190 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2191 vc1_parser_select="vc1dsp"
2192
2193 # bitstream_filters
2194 mjpeg2jpeg_bsf_select="jpegtables"
2195
2196 # external libraries
2197 libdcadec_decoder_deps="libdcadec"
2198 libfaac_encoder_deps="libfaac"
2199 libfaac_encoder_select="audio_frame_queue"
2200 libfdk_aac_decoder_deps="libfdk_aac"
2201 libfdk_aac_encoder_deps="libfdk_aac"
2202 libfdk_aac_encoder_select="audio_frame_queue"
2203 libgsm_decoder_deps="libgsm"
2204 libgsm_encoder_deps="libgsm"
2205 libgsm_ms_decoder_deps="libgsm"
2206 libgsm_ms_encoder_deps="libgsm"
2207 libilbc_decoder_deps="libilbc"
2208 libilbc_encoder_deps="libilbc"
2209 libkvazaar_encoder_deps="libkvazaar"
2210 libmp3lame_encoder_deps="libmp3lame"
2211 libmp3lame_encoder_select="audio_frame_queue"
2212 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2213 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2214 libopencore_amrnb_encoder_select="audio_frame_queue"
2215 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2216 libopenh264_encoder_deps="libopenh264"
2217 libopenjpeg_decoder_deps="libopenjpeg"
2218 libopenjpeg_encoder_deps="libopenjpeg"
2219 libopus_decoder_deps="libopus"
2220 libopus_encoder_deps="libopus"
2221 libopus_encoder_select="audio_frame_queue"
2222 libschroedinger_decoder_deps="libschroedinger"
2223 libschroedinger_encoder_deps="libschroedinger"
2224 libspeex_decoder_deps="libspeex"
2225 libspeex_encoder_deps="libspeex"
2226 libspeex_encoder_select="audio_frame_queue"
2227 libtheora_encoder_deps="libtheora"
2228 libtwolame_encoder_deps="libtwolame"
2229 libvo_aacenc_encoder_deps="libvo_aacenc"
2230 libvo_aacenc_encoder_select="audio_frame_queue"
2231 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2232 libvorbis_encoder_deps="libvorbis"
2233 libvorbis_encoder_select="audio_frame_queue"
2234 libvpx_vp8_decoder_deps="libvpx"
2235 libvpx_vp8_encoder_deps="libvpx"
2236 libvpx_vp9_decoder_deps="libvpx"
2237 libvpx_vp9_encoder_deps="libvpx"
2238 libwavpack_encoder_deps="libwavpack"
2239 libwebp_encoder_deps="libwebp"
2240 libx262_encoder_deps="libx262"
2241 libx264_encoder_deps="libx264"
2242 libx265_encoder_deps="libx265"
2243 libxavs_encoder_deps="libxavs"
2244 libxvid_encoder_deps="libxvid"
2245
2246 # demuxers / muxers
2247 ac3_demuxer_select="ac3_parser"
2248 asf_demuxer_select="riffdec"
2249 asf_muxer_select="riffenc"
2250 asf_stream_muxer_select="asf_muxer"
2251 avi_demuxer_select="iso_media riffdec"
2252 avi_muxer_select="riffenc"
2253 avisynth_demuxer_deps="avisynth"
2254 avisynth_demuxer_select="riffdec"
2255 caf_demuxer_select="iso_media riffdec"
2256 dash_muxer_select="mp4_muxer"
2257 dirac_demuxer_select="dirac_parser"
2258 dv_demuxer_select="dvprofile"
2259 dv_muxer_select="dvprofile"
2260 dxa_demuxer_select="riffdec"
2261 eac3_demuxer_select="ac3_parser"
2262 f4v_muxer_select="mov_muxer"
2263 flac_demuxer_select="flac_parser"
2264 hds_muxer_select="flv_muxer"
2265 hls_muxer_select="mpegts_muxer"
2266 ipod_muxer_select="mov_muxer"
2267 ismv_muxer_select="mov_muxer"
2268 matroska_audio_muxer_select="matroska_muxer"
2269 matroska_demuxer_select="iso_media riffdec"
2270 matroska_demuxer_suggest="bzlib lzo zlib"
2271 matroska_muxer_select="iso_media riffenc"
2272 mmf_muxer_select="riffenc"
2273 mov_demuxer_select="iso_media riffdec"
2274 mov_demuxer_suggest="zlib"
2275 mov_muxer_select="iso_media riffenc rtpenc_chain"
2276 mp3_demuxer_select="mpegaudio_parser"
2277 mp4_muxer_select="mov_muxer"
2278 mpegts_demuxer_select="iso_media"
2279 mpegts_muxer_select="adts_muxer latm_muxer"
2280 mpegtsraw_demuxer_select="mpegts_demuxer"
2281 mxf_d10_muxer_select="mxf_muxer"
2282 nut_muxer_select="riffenc"
2283 nuv_demuxer_select="riffdec"
2284 oga_muxer_select="ogg_muxer"
2285 ogg_demuxer_select="dirac_parse"
2286 opus_muxer_select="ogg_muxer"
2287 psp_muxer_select="mov_muxer"
2288 rtp_demuxer_select="sdp_demuxer"
2289 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2290 rtsp_demuxer_select="http_protocol rtpdec"
2291 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2292 sap_demuxer_select="sdp_demuxer"
2293 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2294 sdp_demuxer_select="rtpdec"
2295 smoothstreaming_muxer_select="ismv_muxer"
2296 spdif_muxer_select="aac_parser"
2297 spx_muxer_select="ogg_muxer"
2298 swf_demuxer_suggest="zlib"
2299 tak_demuxer_select="tak_parser"
2300 tg2_muxer_select="mov_muxer"
2301 tgp_muxer_select="mov_muxer"
2302 w64_demuxer_select="wav_demuxer"
2303 wav_demuxer_select="riffdec"
2304 wav_muxer_select="riffenc"
2305 webm_muxer_select="iso_media riffenc"
2306 webm_muxer_suggest="libopus_encoder libvorbis_encoder libvpx_vp8_encoder libvpx_vp9_encoder"
2307 wtv_demuxer_select="mpegts_demuxer riffdec"
2308 xmv_demuxer_select="riffdec"
2309 xwma_demuxer_select="riffdec"
2310
2311 # indevs / outdevs
2312 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2313 alsa_outdev_deps="alsa_asoundlib_h"
2314 avfoundation_indev_deps="AVFoundation_AVFoundation_h"
2315 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2316 dv1394_indev_deps="dv1394"
2317 dv1394_indev_select="dv_demuxer"
2318 fbdev_indev_deps="linux_fb_h"
2319 jack_indev_deps="jack_jack_h"
2320 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2321 libcdio_indev_deps="libcdio"
2322 libdc1394_indev_deps="libdc1394"
2323 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2324 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2325 pulse_indev_deps="libpulse"
2326 sndio_indev_deps="sndio_h"
2327 sndio_outdev_deps="sndio_h"
2328 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2329 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2330 vfwcap_indev_extralibs="-lavicap32"
2331 x11grab_indev_deps="x11grab"
2332 x11grab_xcb_indev_deps="libxcb"
2333
2334 # protocols
2335 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2336 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2337 ffrtmpcrypt_protocol_select="tcp_protocol"
2338 ffrtmphttp_protocol_deps="!librtmp_protocol"
2339 ffrtmphttp_protocol_select="http_protocol"
2340 gopher_protocol_select="network"
2341 http_protocol_select="tcp_protocol"
2342 httpproxy_protocol_select="tcp_protocol"
2343 https_protocol_select="tls_protocol"
2344 icecast_protocol_select="http_protocol"
2345 librtmp_protocol_deps="librtmp"
2346 librtmpe_protocol_deps="librtmp"
2347 librtmps_protocol_deps="librtmp"
2348 librtmpt_protocol_deps="librtmp"
2349 librtmpte_protocol_deps="librtmp"
2350 mmsh_protocol_select="http_protocol"
2351 mmst_protocol_select="network"
2352 rtmp_protocol_deps="!librtmp_protocol"
2353 rtmp_protocol_select="tcp_protocol"
2354 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2355 rtmps_protocol_deps="!librtmp_protocol"
2356 rtmps_protocol_select="tls_protocol"
2357 rtmpt_protocol_select="ffrtmphttp_protocol"
2358 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2359 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2360 rtp_protocol_select="udp_protocol"
2361 sctp_protocol_deps="struct_sctp_event_subscribe"
2362 sctp_protocol_select="network"
2363 srtp_protocol_select="rtp_protocol srtp"
2364 tcp_protocol_select="network"
2365 tls_gnutls_protocol_deps="gnutls"
2366 tls_gnutls_protocol_select="tcp_protocol"
2367 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2368 tls_openssl_protocol_select="tcp_protocol"
2369 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2370 udp_protocol_select="network"
2371 unix_protocol_deps="sys_un_h"
2372 unix_protocol_select="network"
2373
2374 # filters
2375 blackframe_filter_deps="gpl"
2376 boxblur_filter_deps="gpl"
2377 bs2b_filter_deps="libbs2b"
2378 cropdetect_filter_deps="gpl"
2379 delogo_filter_deps="gpl"
2380 drawtext_filter_deps="libfreetype"
2381 frei0r_filter_deps="frei0r dlopen"
2382 frei0r_filter_extralibs='$ldl'
2383 frei0r_src_filter_deps="frei0r dlopen"
2384 frei0r_src_filter_extralibs='$ldl'
2385 hqdn3d_filter_deps="gpl"
2386 interlace_filter_deps="gpl"
2387 ocv_filter_deps="libopencv"
2388 resample_filter_deps="avresample"
2389 scale_filter_deps="swscale"
2390 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2391
2392 # examples
2393 avcodec_example_deps="avcodec avutil"
2394 filter_audio_example_deps="avfilter avutil"
2395 metadata_example_deps="avformat avutil"
2396 output_example_deps="avcodec avformat avutil swscale"
2397 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2398 transcode_aac_example_deps="avcodec avformat avresample"
2399
2400 # libraries, in linking order
2401 avcodec_deps="avutil"
2402 avdevice_deps="avformat avcodec avutil"
2403 avfilter_deps="avutil"
2404 avformat_deps="avcodec avutil"
2405 avresample_deps="avutil"
2406 swscale_deps="avutil"
2407
2408 # programs
2409 avconv_deps="avcodec avfilter avformat avresample swscale"
2410 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2411                fps_filter null_filter resample_filter scale_filter
2412                setpts_filter trim_filter"
2413 avplay_deps="avcodec avfilter avformat avresample sdl"
2414 avplay_libs='$sdl_libs'
2415 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2416 avprobe_deps="avcodec avformat"
2417
2418 # documentation
2419 pod2man_deps="doc"
2420 texi2html_deps="doc"
2421
2422 # default parameters
2423
2424 logfile="config.log"
2425
2426 # installation paths
2427 prefix_default="/usr/local"
2428 bindir_default='${prefix}/bin'
2429 datadir_default='${prefix}/share/avconv'
2430 docdir_default='${prefix}/share/doc/libav'
2431 incdir_default='${prefix}/include'
2432 libdir_default='${prefix}/lib'
2433 mandir_default='${prefix}/share/man'
2434 shlibdir_default="$libdir_default"
2435
2436 # toolchain
2437 ar_default="ar"
2438 cc_default="gcc"
2439 host_cc_default="gcc"
2440 cp_f="cp -f"
2441 ln_s="ln -s -f"
2442 nm_default="nm -g"
2443 objformat="elf"
2444 pkg_config_default=pkg-config
2445 ranlib="ranlib"
2446 strip="strip"
2447 yasmexe="yasm"
2448
2449 # machine
2450 arch_default=$(uname -m)
2451 cpu="generic"
2452 intrinsics="none"
2453
2454 # OS
2455 target_os_default=$(tolower $(uname -s))
2456 host_os=$target_os_default
2457
2458 # configurable options
2459 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2460
2461 enable asm
2462 enable debug
2463 enable doc
2464 enable faan faandct faanidct
2465 enable optimizations
2466 enable safe_bitstream_reader
2467 enable static
2468 enable swscale_alpha
2469 enable valgrind_backtrace
2470
2471 # By default, enable only those hwaccels that have no external dependencies.
2472 enable d3d11va dxva2 vda vdpau
2473
2474 # build settings
2475 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2476 LIBPREF="lib"
2477 LIBSUF=".a"
2478 FULLNAME='$(NAME)$(BUILDSUF)'
2479 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2480 SLIBPREF="lib"
2481 SLIBSUF=".so"
2482 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2483 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2484 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2485 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2486 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2487 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2488
2489 asflags_filter=echo
2490 cflags_filter=echo
2491 ldflags_filter=echo
2492
2493 AS_C='-c'
2494 AS_O='-o $@'
2495 CC_C='-c'
2496 CC_E='-E -o $@'
2497 CC_O='-o $@'
2498 OBJCC_C='-c'
2499 OBJCC_E='-E -o $@'
2500 OBJCC_O='-o $@'
2501 LD_O='-o $@'
2502 LD_LIB='-l%'
2503 LD_PATH='-L'
2504 HOSTCC_C='-c'
2505 HOSTCC_E='-E -o $@'
2506 HOSTCC_O='-o $@'
2507 HOSTLD_O='-o $@'
2508
2509 host_libs='-lm'
2510 host_cflags_filter=echo
2511 host_ldflags_filter=echo
2512
2513 target_path='$(CURDIR)'
2514
2515 # since the object filename is not given with the -MM flag, the compiler
2516 # is only able to print the basename, and we must add the path ourselves
2517 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2518 DEPFLAGS='-MM'
2519
2520 # find source path
2521 if test -f configure; then
2522     source_path=.
2523 else
2524     source_path=$(cd $(dirname "$0"); pwd)
2525     echo "$source_path" | grep -q '[[:blank:]]' &&
2526         die "Out of tree builds are impossible with whitespace in source path."
2527     test -e "$source_path/config.h" &&
2528         die "Out of tree builds are impossible with config.h in source dir."
2529 fi
2530
2531 for v in "$@"; do
2532     r=${v#*=}
2533     l=${v%"$r"}
2534     r=$(sh_quote "$r")
2535     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2536 done
2537
2538 find_things(){
2539     thing=$1
2540     pattern=$2
2541     file=$source_path/$3
2542     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2543 }
2544
2545 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2546 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2547 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2548 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2549 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2550 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2551 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2552 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2553 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2554
2555 find_things_extern(){
2556     thing=$1
2557     pattern=$2
2558     file=$source_path/$3
2559     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2560 }
2561
2562 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2563 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2564
2565 ALL_COMPONENTS="
2566     $BSF_LIST
2567     $DECODER_LIST
2568     $DEMUXER_LIST
2569     $ENCODER_LIST
2570     $FILTER_LIST
2571     $HWACCEL_LIST
2572     $INDEV_LIST
2573     $MUXER_LIST
2574     $OUTDEV_LIST
2575     $PARSER_LIST
2576     $PROTOCOL_LIST
2577 "
2578
2579 for n in $COMPONENT_LIST; do
2580     v=$(toupper ${n%s})_LIST
2581     eval enable \$$v
2582     eval ${n}_if_any="\$$v"
2583 done
2584
2585 enable $ARCH_EXT_LIST
2586
2587 die_unknown(){
2588     echo "Unknown option \"$1\"."
2589     echo "See $0 --help for available options."
2590     exit 1
2591 }
2592
2593 print_3_columns() {
2594     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2595 }
2596
2597 show_list() {
2598     suffix=_$1
2599     shift
2600     echo $* | sed s/$suffix//g | print_3_columns
2601     exit 0
2602 }
2603
2604 rand_list(){
2605     IFS=', '
2606     set -- $*
2607     unset IFS
2608     for thing; do
2609         comp=${thing%:*}
2610         prob=${thing#$comp}
2611         prob=${prob#:}
2612         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2613         echo "prob ${prob:-0.5}"
2614         printf '%s\n' $comp
2615     done
2616 }
2617
2618 do_random(){
2619     action=$1
2620     shift
2621     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2622     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2623 }
2624
2625 for opt do
2626     optval="${opt#*=}"
2627     case "$opt" in
2628         --extra-ldflags=*)
2629             add_ldflags $optval
2630         ;;
2631         --extra-ldexeflags=*)
2632             add_ldexeflags $optval
2633         ;;
2634         --extra-libs=*)
2635             add_extralibs $optval
2636         ;;
2637         --disable-devices)
2638             disable $INDEV_LIST $OUTDEV_LIST
2639         ;;
2640         --enable-debug=*)
2641             debuglevel="$optval"
2642         ;;
2643         --disable-programs)
2644             disable $PROGRAM_LIST
2645         ;;
2646         --disable-everything)
2647             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2648         ;;
2649         --disable-all)
2650             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2651             disable $LIBRARY_LIST $PROGRAM_LIST doc
2652         ;;
2653         --enable-random|--disable-random)
2654             action=${opt%%-random}
2655             do_random ${action#--} $COMPONENT_LIST
2656         ;;
2657         --enable-random=*|--disable-random=*)
2658             action=${opt%%-random=*}
2659             do_random ${action#--} $optval
2660         ;;
2661         --enable-*=*|--disable-*=*)
2662             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2663             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2664             eval list=\$$(toupper $thing)_LIST
2665             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2666             $action $(filter "$name" $list)
2667         ;;
2668         --enable-avserver|--disable-avserver*)
2669             warn "avserver has been removed, the ${opt} option is only"\
2670                  "provided for compatibility and will be removed in the future"
2671         ;;
2672         --enable-?*|--disable-?*)
2673             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2674             if is_in $option $COMPONENT_LIST; then
2675                 test $action = disable && action=unset
2676                 eval $action \$$(toupper ${option%s})_LIST
2677             elif is_in $option $CMDLINE_SELECT; then
2678                 $action $option
2679             else
2680                 die_unknown $opt
2681             fi
2682         ;;
2683         --list-*)
2684             NAME="${opt#--list-}"
2685             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2686             NAME=${NAME%s}
2687             eval show_list $NAME \$$(toupper $NAME)_LIST
2688         ;;
2689         --help|-h) show_help
2690         ;;
2691         *)
2692             optname="${opt%%=*}"
2693             optname="${optname#--}"
2694             optname=$(echo "$optname" | sed 's/-/_/g')
2695             if is_in $optname $CMDLINE_SET; then
2696                 eval $optname='$optval'
2697             elif is_in $optname $CMDLINE_APPEND; then
2698                 append $optname "$optval"
2699             else
2700                 die_unknown $opt
2701             fi
2702         ;;
2703     esac
2704 done
2705
2706 for e in $env; do
2707     eval "export $e"
2708 done
2709
2710 disabled logging && logfile=/dev/null
2711
2712 # Disable all the library-specific components if the library itself
2713 # is disabled, see AVCODEC_LIST and following _LIST variables.
2714
2715 disable_components(){
2716     disabled ${1} && disable $(
2717         eval components="\$$(toupper ${1})_COMPONENTS"
2718         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2719     )
2720 }
2721
2722 map 'disable_components $v' $LIBRARY_LIST
2723
2724 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2725 set >> $logfile
2726
2727 case "$toolchain" in
2728     *-asan)
2729         cc_default="${toolchain%-asan}"
2730         add_cflags  -fsanitize=address
2731         add_ldflags -fsanitize=address
2732     ;;
2733     *-msan)
2734         cc_default="${toolchain%-msan}"
2735         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2736         add_ldflags -fsanitize=memory
2737     ;;
2738     *-tsan)
2739         cc_default="${toolchain%-tsan}"
2740         add_cflags  -fsanitize=thread -pie
2741         add_ldflags -fsanitize=thread -pie
2742         case "$toolchain" in
2743             gcc-tsan)
2744                 add_cflags  -fPIC
2745                 add_ldflags -fPIC
2746                 ;;
2747         esac
2748     ;;
2749     *-usan)
2750         cc_default="${toolchain%-usan}"
2751         add_cflags  -fsanitize=undefined
2752         add_ldflags -fsanitize=undefined
2753         case "$toolchain" in
2754             clang-usan)
2755                 add_cflags -O1
2756                 ;;
2757         esac
2758     ;;
2759     valgrind-*)
2760         target_exec_default="valgrind"
2761         case "$toolchain" in
2762             valgrind-massif)
2763                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2764                 ;;
2765             valgrind-memcheck)
2766                 target_exec_args="--track-origins=yes --leak-check=full"
2767                 ;;
2768         esac
2769     ;;
2770     msvc)
2771         # Check whether the current MSVC version needs the C99 converter.
2772         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2773         # support enough of C99 to build libav. Default to the new
2774         # behaviour if the regexp was unable to match anything, since this
2775         # successfully parses the version number of existing supported
2776         # versions that require the converter (MSVC 2010 and 2012).
2777         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2778         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2779             cc_default="cl"
2780         else
2781             cc_default="c99wrap cl"
2782         fi
2783         ld_default="$source_path/compat/windows/mslink"
2784         nm_default="dumpbin -symbols"
2785         ar_default="lib"
2786         case "$arch" in
2787         arm*)
2788             as_default="armasm"
2789             ;;
2790         esac
2791         target_os_default="win32"
2792         # Use a relative path for TMPDIR. This makes sure all the
2793         # ffconf temp files are written with a relative path, avoiding
2794         # issues with msys/win32 path conversion for MSVC parameters
2795         # such as -Fo<file> or -out:<file>.
2796         TMPDIR=.
2797     ;;
2798     icl)
2799         cc_default="icl"
2800         ld_default="xilink"
2801         nm_default="dumpbin -symbols"
2802         ar_default="xilib"
2803         target_os_default="win32"
2804         TMPDIR=.
2805     ;;
2806     gcov)
2807         add_cflags  -fprofile-arcs -ftest-coverage
2808         add_ldflags -fprofile-arcs -ftest-coverage
2809     ;;
2810     llvm-cov)
2811         add_cflags -fprofile-arcs -ftest-coverage
2812         add_ldflags --coverage
2813     ;;
2814     hardened)
2815         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2816         add_cflags   -fno-strict-overflow -fstack-protector-all
2817         add_ldflags  -Wl,-z,relro -Wl,-z,now
2818     ;;
2819     ?*)
2820         die "Unknown toolchain $toolchain"
2821     ;;
2822 esac
2823
2824 test -n "$cross_prefix" && enable cross_compile
2825
2826 if enabled cross_compile; then
2827     test -n "$arch" && test -n "$target_os" ||
2828         die "Must specify target arch and OS when cross-compiling"
2829 fi
2830
2831 ar_default="${cross_prefix}${ar_default}"
2832 cc_default="${cross_prefix}${cc_default}"
2833 occ_default="${cross_prefix}${occ_default}"
2834 nm_default="${cross_prefix}${nm_default}"
2835 pkg_config_default="${cross_prefix}${pkg_config_default}"
2836 ranlib="${cross_prefix}${ranlib}"
2837 strip="${cross_prefix}${strip}"
2838
2839 sysinclude_default="${sysroot}/usr/include"
2840
2841 set_default arch cc pkg_config sysinclude target_exec target_os
2842 enabled cross_compile || host_cc_default=$cc
2843 set_default host_cc
2844
2845 if ! $pkg_config --version >/dev/null 2>&1; then
2846     warn "$pkg_config not found, library detection may fail."
2847     pkg_config=false
2848 fi
2849
2850 exesuf() {
2851     case $1 in
2852         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2853     esac
2854 }
2855
2856 EXESUF=$(exesuf $target_os)
2857 HOSTEXESUF=$(exesuf $host_os)
2858
2859 # set temporary file name
2860 : ${TMPDIR:=$TEMPDIR}
2861 : ${TMPDIR:=$TMP}
2862 : ${TMPDIR:=/tmp}
2863
2864 if ! check_cmd mktemp -u XXXXXX; then
2865     # simple replacement for missing mktemp
2866     # NOT SAFE FOR GENERAL USE
2867     mktemp(){
2868         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2869     }
2870 fi
2871
2872 tmpfile(){
2873     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2874         (set -C; exec > $tmp) 2>/dev/null ||
2875         die "Unable to create temporary file in $TMPDIR."
2876     append TMPFILES $tmp
2877     eval $1=$tmp
2878 }
2879
2880 trap 'rm -f -- $TMPFILES' EXIT
2881
2882 tmpfile TMPASM .asm
2883 tmpfile TMPC   .c
2884 tmpfile TMPE   $EXESUF
2885 tmpfile TMPH   .h
2886 tmpfile TMPO   .o
2887 tmpfile TMPS   .S
2888 tmpfile TMPSH  .sh
2889 tmpfile TMPV   .ver
2890
2891 unset -f mktemp
2892
2893 chmod +x $TMPE
2894
2895 # make sure we can execute files in $TMPDIR
2896 cat > $TMPSH 2>> $logfile <<EOF
2897 #! /bin/sh
2898 EOF
2899 chmod +x $TMPSH >> $logfile 2>&1
2900 if ! $TMPSH >> $logfile 2>&1; then
2901     cat <<EOF
2902 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2903 variable to another directory and make sure that it is not mounted noexec.
2904 EOF
2905     die "Sanity test failed."
2906 fi
2907
2908 armasm_flags(){
2909     for flag; do
2910         case $flag in
2911             # Filter out MSVC cl.exe options from cflags that shouldn't
2912             # be passed to gas-preprocessor
2913             -M[TD]*)                                            ;;
2914             *)                  echo $flag                      ;;
2915         esac
2916    done
2917 }
2918
2919 ccc_flags(){
2920     for flag; do
2921         case $flag in
2922             -std=c99)           echo -c99                       ;;
2923             -mcpu=*)            echo -arch ${flag#*=}           ;;
2924             -mieee)             echo -ieee                      ;;
2925             -O*|-fast)          echo $flag                      ;;
2926             -fno-math-errno)    echo -assume nomath_errno       ;;
2927             -g)                 echo -g3                        ;;
2928             -Wall)              echo -msg_enable level2         ;;
2929             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2930             -Wl,*)              echo $flag                      ;;
2931             -f*|-W*)                                            ;;
2932             *)                  echo $flag                      ;;
2933         esac
2934    done
2935 }
2936
2937 cparser_flags(){
2938     for flag; do
2939         case $flag in
2940             -Wno-switch)             echo -Wno-switch-enum ;;
2941             -Wno-format-zero-length) ;;
2942             -Wdisabled-optimization) ;;
2943             -Wno-pointer-sign)       echo -Wno-other ;;
2944             *)                       echo $flag ;;
2945         esac
2946     done
2947 }
2948
2949 msvc_common_flags(){
2950     for flag; do
2951         case $flag in
2952             # In addition to specifying certain flags under the compiler
2953             # specific filters, they must be specified here as well or else the
2954             # generic catch all at the bottom will print the original flag.
2955             -Wall)                ;;
2956             -std=c99)             ;;
2957             # Common flags
2958             -fomit-frame-pointer) ;;
2959             -g)                   echo -Z7 ;;
2960             -fno-math-errno)      ;;
2961             -fno-common)          ;;
2962             -fno-signed-zeros)    ;;
2963             -fPIC)                ;;
2964             -mthumb)              ;;
2965             -march=*)             ;;
2966             -lz)                  echo zlib.lib ;;
2967             -lavifil32)           echo vfw32.lib ;;
2968             -lavicap32)           echo vfw32.lib user32.lib ;;
2969             -lx264)               echo libx264.lib ;;
2970             -l*)                  echo ${flag#-l}.lib ;;
2971             -L*)                  echo -libpath:${flag#-L} ;;
2972             *)                    echo $flag ;;
2973         esac
2974     done
2975 }
2976
2977 msvc_flags(){
2978     msvc_common_flags "$@"
2979     for flag; do
2980         case $flag in
2981             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2982                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2983                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2984                                        -wd4273 -wd4554 -wd4701 ;;
2985         esac
2986     done
2987 }
2988
2989 icl_flags(){
2990     msvc_common_flags "$@"
2991     for flag; do
2992         case $flag in
2993             # Despite what Intel's documentation says -Wall, which is supported
2994             # on Windows, does enable remarks so disable them here.
2995             -Wall)                echo $flag -Qdiag-disable:remark ;;
2996             -std=c99)             echo -Qstd=c99 ;;
2997         esac
2998     done
2999 }
3000
3001 pgi_flags(){
3002     for flag; do
3003         case $flag in
3004             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3005             -fomit-frame-pointer) echo -Mnoframe ;;
3006             -g)                   echo -gopt ;;
3007             *)                    echo $flag ;;
3008         esac
3009     done
3010 }
3011
3012 suncc_flags(){
3013     for flag; do
3014         case $flag in
3015             -march=*|-mcpu=*)
3016                 case "${flag#*=}" in
3017                     native)                   echo -xtarget=native       ;;
3018                     v9|niagara)               echo -xarch=sparc          ;;
3019                     ultrasparc)               echo -xarch=sparcvis       ;;
3020                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3021                     i586|pentium)             echo -xchip=pentium        ;;
3022                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3023                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3024                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3025                     pentium4*)          echo -xtarget=pentium4           ;;
3026                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3027                     *-sse3)             echo -xarch=sse3                 ;;
3028                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3029                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3030                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3031                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3032                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3033                     k8|opteron|athlon64|athlon-fx)
3034                                                echo -xarch=sse2a         ;;
3035                     athlon*)                   echo -xarch=pentium_proa  ;;
3036                 esac
3037                 ;;
3038             -std=c99)             echo -xc99              ;;
3039             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3040             -fPIC)                echo -KPIC -xcode=pic32 ;;
3041             -W*,*)                echo $flag              ;;
3042             -f*-*|-W*|-mimpure-text)                      ;;
3043             -shared)              echo -G                 ;;
3044             *)                    echo $flag              ;;
3045         esac
3046     done
3047 }
3048
3049 tms470_flags(){
3050     for flag; do
3051         case $flag in
3052             -march=*|-mcpu=*)
3053                 case "${flag#*=}" in
3054                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3055                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3056                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3057                     armv6*|arm11*)          echo -mv=6   ;;
3058                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3059                                             echo -mv=5e  ;;
3060                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3061                 esac
3062                 ;;
3063             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3064             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3065             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3066             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3067             -msoft-float)   echo --float_support=vfplib       ;;
3068             -O[0-3]|-mf=*)  echo $flag                        ;;
3069             -g)             echo -g -mn                       ;;
3070             -pds=*)         echo $flag                        ;;
3071             -D*|-I*)        echo $flag                        ;;
3072             --gcc|--abi=*)  echo $flag                        ;;
3073             -me)            echo $flag                        ;;
3074         esac
3075     done
3076 }
3077
3078 probe_cc(){
3079     pfx=$1
3080     _cc=$2
3081
3082     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3083     unset _ld_o _ldflags _ld_lib _ld_path
3084     unset _depflags _DEPCMD _DEPFLAGS
3085     _flags_filter=echo
3086
3087     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3088         _type=llvm_gcc
3089         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3090         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3091         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3092         _cflags_speed='-O3'
3093         _cflags_size='-Os'
3094     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3095         _type=gcc
3096         gcc_version=$($_cc --version | head -n1)
3097         gcc_basever=$($_cc -dumpversion)
3098         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3099         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3100         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3101         if ! $_cc -dumpversion | grep -q '^2\.'; then
3102             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3103         fi
3104         _cflags_speed='-O3'
3105         _cflags_size='-Os'
3106     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3107         _type=icc
3108         _ident=$($_cc --version | head -n1)
3109         _depflags='-MMD'
3110         _cflags_speed='-O3'
3111         _cflags_size='-Os'
3112         _cflags_noopt='-O1'
3113     elif $_cc -v 2>&1 | grep -q xlc; then
3114         _type=xlc
3115         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3116         _cflags_speed='-O5'
3117         _cflags_size='-O5 -qcompact'
3118     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3119         _type=ccc
3120         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3121         _DEPFLAGS='-M'
3122         _cflags_speed='-fast'
3123         _cflags_size='-O1'
3124         _flags_filter=ccc_flags
3125     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3126         test -d "$sysroot" || die "No valid sysroot specified."
3127         _type=armcc
3128         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3129         armcc_conf="$PWD/armcc.conf"
3130         $_cc --arm_linux_configure                 \
3131              --arm_linux_config_file="$armcc_conf" \
3132              --configure_sysroot="$sysroot"        \
3133              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3134              die "Error creating armcc configuration file."
3135         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3136         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3137         as_default="${cross_prefix}gcc"
3138         _depflags='-MMD'
3139         _cflags_speed='-O3'
3140         _cflags_size='-Os'
3141     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3142         _type=tms470
3143         _ident=$($_cc -version | head -n1 | tr -s ' ')
3144         _flags='--gcc --abi=eabi -me'
3145         _cc_e='-ppl -fe=$@'
3146         _cc_o='-fe=$@'
3147         _depflags='-ppa -ppd=$(@:.o=.d)'
3148         _cflags_speed='-O3 -mf=5'
3149         _cflags_size='-O3 -mf=2'
3150         _flags_filter=tms470_flags
3151     elif $_cc -v 2>&1 | grep -q clang; then
3152         _type=clang
3153         _ident=$($_cc --version 2>/dev/null | head -n1)
3154         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3155         _cflags_speed='-O3'
3156         _cflags_size='-Os'
3157     elif $_cc -V 2>&1 | grep -q Sun; then
3158         _type=suncc
3159         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3160         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3161         _DEPFLAGS='-xM1 -xc99'
3162         _ldflags='-std=c99'
3163         _cflags_speed='-O5'
3164         _cflags_size='-O5 -xspace'
3165         _flags_filter=suncc_flags
3166     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3167         _type=pathscale
3168         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3169         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3170         _cflags_speed='-O2'
3171         _cflags_size='-Os'
3172         _flags_filter='filter_out -Wdisabled-optimization'
3173     elif $_cc -v 2>&1 | grep -q Open64; then
3174         _type=open64
3175         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3176         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3177         _cflags_speed='-O2'
3178         _cflags_size='-Os'
3179         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3180     elif $_cc -V 2>&1 | grep -q Portland; then
3181         _type=pgi
3182         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3183         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3184         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3185         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3186         _cflags_noopt="-O1"
3187         _flags_filter=pgi_flags
3188     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3189         _type=armasm
3190         _ident=$($_cc | head -n1)
3191         # 4509: "This form of conditional instruction is deprecated"
3192         _flags="-nologo -ignore 4509"
3193         _flags_filter=armasm_flags
3194     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3195         _type=msvc
3196         _ident=$($_cc 2>&1 | head -n1)
3197         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3198         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3199         _cflags_speed="-O2"
3200         _cflags_size="-O1"
3201         if $_cc -nologo- 2>&1 | grep -q Linker; then
3202             _ld_o='-out:$@'
3203         else
3204             _ld_o='-Fe$@'
3205         fi
3206         _cc_o='-Fo$@'
3207         _cc_e='-P -Fi$@'
3208         _flags_filter=msvc_flags
3209         _ld_lib='lib%.a'
3210         _ld_path='-libpath:'
3211         _flags='-nologo'
3212         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3213     elif $_cc 2>&1 | grep -q Intel; then
3214         _type=icl
3215         _ident=$($_cc 2>&1 | head -n1)
3216         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3217         # Not only is O3 broken on 13.x+ but it is slower on all previous
3218         # versions (tested) as well.
3219         _cflags_speed="-O2"
3220         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3221         if $_cc 2>&1 | grep -q Linker; then
3222             _ld_o='-out:$@'
3223         else
3224             _ld_o='-Fe$@'
3225         fi
3226         _cc_o='-Fo$@'
3227         _cc_e='-P'
3228         _flags_filter=icl_flags
3229         _ld_lib='lib%.a'
3230         _ld_path='-libpath:'
3231         # -Qdiag-error to make icl error when seeing certain unknown arguments
3232         _flags='-nologo -Qdiag-error:4044,10157'
3233         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3234         # with MSVC which enables it by default.
3235         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS'
3236     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3237         _type=cparser
3238         _ident=$($_cc --version | head -n1)
3239         _depflags='-MMD'
3240         _cflags_speed='-O4'
3241         _cflags_size='-O2'
3242         _flags_filter=cparser_flags
3243     fi
3244
3245     eval ${pfx}_type=\$_type
3246     eval ${pfx}_ident=\$_ident
3247 }
3248
3249 set_ccvars(){
3250     eval ${1}_C=\${_cc_c-\${${1}_C}}
3251     eval ${1}_E=\${_cc_e-\${${1}_E}}
3252     eval ${1}_O=\${_cc_o-\${${1}_O}}
3253
3254     if [ -n "$_depflags" ]; then
3255         eval ${1}_DEPFLAGS=\$_depflags
3256     else
3257         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3258         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3259         eval DEP${1}FLAGS=\$_flags
3260     fi
3261 }
3262
3263 probe_cc cc "$cc"
3264 cflags_filter=$_flags_filter
3265 cflags_speed=$_cflags_speed
3266 cflags_size=$_cflags_size
3267 cflags_noopt=$_cflags_noopt
3268 add_cflags $_flags $_cflags
3269 cc_ldflags=$_ldflags
3270 set_ccvars CC
3271
3272 probe_cc hostcc "$host_cc"
3273 host_cflags_filter=$_flags_filter
3274 add_host_cflags  $_flags $_cflags
3275 set_ccvars HOSTCC
3276
3277 test -n "$cc_type" && enable $cc_type ||
3278     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3279
3280 : ${as_default:=$cc}
3281 : ${objcc_default:=$cc}
3282 : ${dep_cc_default:=$cc}
3283 : ${ld_default:=$cc}
3284 : ${host_ld_default:=$host_cc}
3285 set_default ar as objcc dep_cc ld host_ld
3286
3287 probe_cc as "$as"
3288 asflags_filter=$_flags_filter
3289 add_asflags $_flags $_cflags
3290 set_ccvars AS
3291
3292 probe_cc objcc "$objcc"
3293 objcflags_filter=$_flags_filter
3294 add_objcflags $_flags $_cflags
3295 set_ccvars OBJC
3296
3297 probe_cc ld "$ld"
3298 ldflags_filter=$_flags_filter
3299 add_ldflags $_flags $_ldflags
3300 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3301 LD_O=${_ld_o-$LD_O}
3302 LD_LIB=${_ld_lib-$LD_LIB}
3303 LD_PATH=${_ld_path-$LD_PATH}
3304
3305 probe_cc hostld "$host_ld"
3306 host_ldflags_filter=$_flags_filter
3307 add_host_ldflags $_flags $_ldflags
3308 HOSTLD_O=${_ld_o-$HOSTLD_O}
3309
3310 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3311     probe_cc depcc "$dep_cc"
3312     CCDEP=${_DEPCMD:-$DEPCMD}
3313     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3314     DEPCCFLAGS=$_flags
3315 fi
3316
3317 if $ar 2>&1 | grep -q Microsoft; then
3318     arflags="-nologo"
3319     ar_o='-out:$@'
3320 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3321     arflags="rq"
3322     ar_o='$@'
3323 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3324     arflags='-Xany -r -c'
3325     ar_o='$@'
3326 else
3327     arflags="rc"
3328     ar_o='$@'
3329 fi
3330
3331 add_cflags $extra_cflags
3332 add_objcflags $extra_objcflags
3333 add_asflags $extra_cflags
3334
3335 if test -n "$sysroot"; then
3336     case "$cc_type" in
3337         gcc|llvm_gcc|clang)
3338             add_cppflags --sysroot="$sysroot"
3339             add_ldflags --sysroot="$sysroot"
3340         ;;
3341         tms470)
3342             add_cppflags -I"$sysinclude"
3343             add_ldflags  --sysroot="$sysroot"
3344         ;;
3345     esac
3346 fi
3347
3348 if test "$cpu" = host; then
3349     enabled cross_compile &&
3350         die "--cpu=host makes no sense when cross-compiling."
3351
3352     case "$cc_type" in
3353         gcc|llvm_gcc)
3354             check_native(){
3355                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3356                 sed -n "/cc1.*$1=/{
3357                             s/.*$1=\\([^ ]*\\).*/\\1/
3358                             p
3359                             q
3360                         }" $TMPE
3361             }
3362             cpu=$(check_native -march || check_native -mcpu)
3363         ;;
3364     esac
3365
3366     test "${cpu:-host}" = host &&
3367         die "--cpu=host not supported with compiler $cc"
3368 fi
3369
3370 # Deal with common $arch aliases
3371 case "$arch" in
3372     aarch64|arm64)
3373         arch="aarch64"
3374     ;;
3375     arm*)
3376         arch="arm"
3377     ;;
3378     mips*|IP*)
3379         case "$arch" in
3380         *el)
3381             add_cppflags -EL
3382             add_ldflags -EL
3383         ;;
3384         *eb)
3385             add_cppflags -EB
3386             add_ldflags -EB
3387         ;;
3388         esac
3389         arch="mips"
3390     ;;
3391     parisc*|hppa*)
3392         arch="parisc"
3393     ;;
3394     "Power Macintosh"|ppc*|powerpc*)
3395         arch="ppc"
3396     ;;
3397     s390|s390x)
3398         arch="s390"
3399     ;;
3400     sh4|sh)
3401         arch="sh4"
3402     ;;
3403     sun4u|sparc*)
3404         arch="sparc"
3405     ;;
3406     tilegx|tile-gx)
3407         arch="tilegx"
3408     ;;
3409     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3410         arch="x86"
3411     ;;
3412 esac
3413
3414 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3415 enable $arch
3416
3417 # Add processor-specific flags
3418 if enabled aarch64; then
3419
3420     case $cpu in
3421         armv*)
3422             cpuflags="-march=$cpu"
3423         ;;
3424         *)
3425             cpuflags="-mcpu=$cpu"
3426         ;;
3427     esac
3428
3429 elif enabled alpha; then
3430
3431     cpuflags="-mcpu=$cpu"
3432
3433 elif enabled arm; then
3434
3435     check_arm_arch() {
3436         check_cpp_condition stddef.h \
3437             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3438             $cpuflags
3439     }
3440
3441     probe_arm_arch() {
3442         if   check_arm_arch 4;        then echo armv4
3443         elif check_arm_arch 4T;       then echo armv4t
3444         elif check_arm_arch 5;        then echo armv5
3445         elif check_arm_arch 5E;       then echo armv5e
3446         elif check_arm_arch 5T;       then echo armv5t
3447         elif check_arm_arch 5TE;      then echo armv5te
3448         elif check_arm_arch 5TEJ;     then echo armv5te
3449         elif check_arm_arch 6;        then echo armv6
3450         elif check_arm_arch 6J;       then echo armv6j
3451         elif check_arm_arch 6K;       then echo armv6k
3452         elif check_arm_arch 6Z;       then echo armv6z
3453         elif check_arm_arch 6ZK;      then echo armv6zk
3454         elif check_arm_arch 6T2;      then echo armv6t2
3455         elif check_arm_arch 7;        then echo armv7
3456         elif check_arm_arch 7A  7_A;  then echo armv7-a
3457         elif check_arm_arch 7S;       then echo armv7-a
3458         elif check_arm_arch 7R  7_R;  then echo armv7-r
3459         elif check_arm_arch 7M  7_M;  then echo armv7-m
3460         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3461         elif check_arm_arch 8A  8_A;  then echo armv8-a
3462         fi
3463     }
3464
3465     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3466
3467     case $cpu in
3468         armv*)
3469             cpuflags="-march=$cpu"
3470             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3471         ;;
3472         *)
3473             cpuflags="-mcpu=$cpu"
3474             case $cpu in
3475                 cortex-a*)                               subarch=armv7a  ;;
3476                 cortex-r*)                               subarch=armv7r  ;;
3477                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3478                 arm11*)                                  subarch=armv6   ;;
3479                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3480                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3481                 *)                             subarch=$(probe_arm_arch) ;;
3482             esac
3483         ;;
3484     esac
3485
3486     case "$subarch" in
3487         armv5t*)    enable fast_clz                ;;
3488         armv[6-8]*) enable fast_clz fast_unaligned ;;
3489     esac
3490
3491 elif enabled avr32; then
3492
3493     case $cpu in
3494         ap7[02]0[0-2])
3495             subarch="avr32_ap"
3496             cpuflags="-mpart=$cpu"
3497         ;;
3498         ap)
3499             subarch="avr32_ap"
3500             cpuflags="-march=$cpu"
3501         ;;
3502         uc3[ab]*)
3503             subarch="avr32_uc"
3504             cpuflags="-mcpu=$cpu"
3505         ;;
3506         uc)
3507             subarch="avr32_uc"
3508             cpuflags="-march=$cpu"
3509         ;;
3510     esac
3511
3512 elif enabled bfin; then
3513
3514     cpuflags="-mcpu=$cpu"
3515
3516 elif enabled mips; then
3517
3518     cpuflags="-march=$cpu"
3519
3520 elif enabled ppc; then
3521
3522     disable ldbrx
3523
3524     case $(tolower $cpu) in
3525         601|ppc601|powerpc601)
3526             cpuflags="-mcpu=601"
3527             disable altivec
3528         ;;
3529         603*|ppc603*|powerpc603*)
3530             cpuflags="-mcpu=603"
3531             disable altivec
3532         ;;
3533         604*|ppc604*|powerpc604*)
3534             cpuflags="-mcpu=604"
3535             disable altivec
3536         ;;
3537         g3|75*|ppc75*|powerpc75*)
3538             cpuflags="-mcpu=750"
3539             disable altivec
3540         ;;
3541         g4|745*|ppc745*|powerpc745*)
3542             cpuflags="-mcpu=7450"
3543             disable vsx
3544         ;;
3545         74*|ppc74*|powerpc74*)
3546             cpuflags="-mcpu=7400"
3547             disable vsx
3548         ;;
3549         g5|970|ppc970|powerpc970)
3550             cpuflags="-mcpu=970"
3551             disable vsx
3552         ;;
3553         power[3-6]*)
3554             cpuflags="-mcpu=$cpu"
3555             disable vsx
3556         ;;
3557         power[7-8]*)
3558             cpuflags="-mcpu=$cpu"
3559             enable ldbrx
3560         ;;
3561         cell)
3562             cpuflags="-mcpu=cell"
3563             enable ldbrx
3564             disable vsx
3565         ;;
3566         e500mc)
3567             cpuflags="-mcpu=e500mc"
3568             disable altivec
3569         ;;
3570         e500v2)
3571             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3572             disable altivec
3573             disable dcbzl
3574         ;;
3575         e500)
3576             cpuflags="-mcpu=8540 -mhard-float"
3577             disable altivec
3578             disable dcbzl
3579         ;;
3580     esac
3581
3582 elif enabled sparc; then
3583
3584     case $cpu in
3585         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3586             cpuflags="-mcpu=$cpu"
3587         ;;
3588         ultrasparc*|niagara[234])
3589             cpuflags="-mcpu=$cpu"
3590         ;;
3591     esac
3592
3593 elif enabled x86; then
3594
3595     case $cpu in
3596         i[345]86|pentium)
3597             cpuflags="-march=$cpu"
3598             disable i686
3599             disable mmx
3600         ;;
3601         # targets that do NOT support nopl and conditional mov (cmov)
3602         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3603             cpuflags="-march=$cpu"
3604             disable i686
3605         ;;
3606         # targets that do support nopl and conditional mov (cmov)
3607         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3608             cpuflags="-march=$cpu"
3609             enable i686
3610             enable fast_cmov
3611         ;;
3612         # targets that do support conditional mov but on which it's slow
3613         pentium4|pentium4m|prescott|nocona)
3614             cpuflags="-march=$cpu"
3615             enable i686
3616             disable fast_cmov
3617         ;;
3618     esac
3619
3620 fi
3621
3622 if [ "$cpu" != generic ]; then
3623     add_cflags  $cpuflags
3624     add_asflags $cpuflags
3625     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3626 fi
3627
3628 # compiler sanity check
3629 check_exec <<EOF
3630 int main(void){ return 0; }
3631 EOF
3632 if test "$?" != 0; then
3633     echo "$cc is unable to create an executable file."
3634     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3635         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3636         echo "Only do this if you know what cross compiling means."
3637     fi
3638     die "C compiler test failed."
3639 fi
3640
3641 add_cppflags -D_ISOC99_SOURCE
3642 check_cflags -std=c99
3643 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3644 #include <stdlib.h>
3645 EOF
3646 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3647 #include <stdlib.h>
3648 EOF
3649
3650 add_host_cppflags -D_ISOC99_SOURCE
3651 check_host_cflags -std=c99
3652 check_host_cflags -Wall
3653 check_host_cflags -O3
3654
3655 check_64bit(){
3656     arch32=$1
3657     arch64=$2
3658     expr=$3
3659     check_code cc "" "int test[2*($expr) - 1]" &&
3660         subarch=$arch64 || subarch=$arch32
3661 }
3662
3663 case "$arch" in
3664     aarch64|alpha|ia64)
3665         spic=$shared
3666     ;;
3667     mips)
3668         check_64bit mips mips64 '_MIPS_SIM > 1'
3669         spic=$shared
3670     ;;
3671     parisc)
3672         check_64bit parisc parisc64 'sizeof(void *) > 4'
3673         spic=$shared
3674     ;;
3675     ppc)
3676         check_64bit ppc ppc64 'sizeof(void *) > 4'
3677         spic=$shared
3678     ;;
3679     s390)
3680         check_64bit s390 s390x 'sizeof(void *) > 4'
3681         spic=$shared
3682     ;;
3683     sparc)
3684         check_64bit sparc sparc64 'sizeof(void *) > 4'
3685         spic=$shared
3686     ;;
3687     x86)
3688         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3689         if test "$subarch" = "x86_64"; then
3690             spic=$shared
3691         fi
3692     ;;
3693 esac
3694
3695 enable $subarch
3696 enabled spic && enable_weak pic
3697
3698 # OS specific
3699 case $target_os in
3700     aix)
3701         SHFLAGS=-shared
3702         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3703         enabled shared && add_ldflags -Wl,-brtl
3704         ;;
3705     android)
3706         disable symver
3707         enable section_data_rel_ro
3708         SLIB_INSTALL_NAME='$(SLIBNAME)'
3709         SLIB_INSTALL_LINKS=
3710         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3711         ;;
3712     haiku)
3713         prefix_default="/boot/common"
3714         network_extralibs="-lnetwork"
3715         host_libs=
3716         ;;
3717     sunos)
3718         SHFLAGS='-shared -Wl,-h,$$(@F)'
3719         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3720         network_extralibs="-lsocket -lnsl"
3721         # When using suncc to build, the Solaris linker will mark
3722         # an executable with each instruction set encountered by
3723         # the Solaris assembler.  As our libraries contain their own
3724         # guards for processor-specific code, instead suppress
3725         # generation of the HWCAPS ELF section on Solaris x86 only.
3726         enabled_all suncc x86 &&
3727             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3728             add_ldflags -Wl,-M,mapfile
3729         nm_default='nm -P -g'
3730         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
3731         ;;
3732     netbsd)
3733         disable symver
3734         oss_indev_extralibs="-lossaudio"
3735         oss_outdev_extralibs="-lossaudio"
3736         ;;
3737     openbsd|bitrig)
3738         disable symver
3739         SHFLAGS='-shared'
3740         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3741         SLIB_INSTALL_LINKS=
3742         oss_indev_extralibs="-lossaudio"
3743         oss_outdev_extralibs="-lossaudio"
3744         ;;
3745     dragonfly)
3746         disable symver
3747         ;;
3748     freebsd)
3749         ;;
3750     bsd/os)
3751         add_extralibs -lpoll -lgnugetopt
3752         ;;
3753     darwin)
3754         enabled ppc && add_asflags -force_cpusubtype_ALL
3755         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3756         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3757         add_ldflags -Wl,-dynamic,-search_paths_first
3758         SLIBSUF=".dylib"
3759         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3760         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3761         objformat="macho"
3762         enabled x86_64 && objformat="macho64"
3763         enabled_any pic shared ||
3764             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3765         check_header dispatch/dispatch.h &&
3766             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3767         ;;
3768     msys*)
3769         die "Native MSYS builds are discouraged, please use the MINGW environment."
3770         ;;
3771     mingw32*|mingw64*)
3772         if test $target_os = "mingw32ce"; then
3773             disable network
3774         else
3775             target_os=mingw32
3776         fi
3777         LIBTARGET=i386
3778         if enabled x86_64; then
3779             LIBTARGET="i386:x86-64"
3780         elif enabled arm; then
3781             LIBTARGET=arm-wince
3782         fi
3783         check_ldflags -Wl,--nxcompat
3784         check_ldflags -Wl,--dynamicbase
3785         shlibdir_default="$bindir_default"
3786         SLIBPREF=""
3787         SLIBSUF=".dll"
3788         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3789         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3790         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3791         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3792         SLIB_INSTALL_LINKS=
3793         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3794         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3795         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3796         objformat="win32"
3797         dlltool="${cross_prefix}dlltool"
3798         ranlib=:
3799         enable dos_paths
3800         ;;
3801     win32|win64)
3802         disable symver
3803         if enabled shared; then
3804             # Link to the import library instead of the normal static library
3805             # for shared libs.
3806             LD_LIB='%.lib'
3807             # Cannot build both shared and static libs with MSVC or icl.
3808             disable static
3809         fi
3810         shlibdir_default="$bindir_default"
3811         SLIBPREF=""
3812         SLIBSUF=".dll"
3813         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3814         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3815         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3816         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3817         SLIB_INSTALL_LINKS=
3818         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3819         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3820         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3821         objformat="win32"
3822         ranlib=:
3823         enable dos_paths
3824         ;;
3825     cygwin*)
3826         target_os=cygwin
3827         shlibdir_default="$bindir_default"
3828         SLIBPREF="cyg"
3829         SLIBSUF=".dll"
3830         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3831         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3832         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3833         SLIB_INSTALL_LINKS=
3834         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3835         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3836         objformat="win32"
3837         enable dos_paths
3838         ;;
3839     *-dos|freedos|opendos)
3840         network_extralibs="-lsocket"
3841         objformat="coff"
3842         enable dos_paths
3843         add_cppflags -U__STRICT_ANSI__
3844         ;;
3845     linux)
3846         enable dv1394
3847         enable section_data_rel_ro
3848         ;;
3849     irix*)
3850         target_os=irix
3851         ranlib="echo ignoring ranlib"
3852         ;;
3853     os/2*)
3854         ln_s="cp -f"
3855         objformat="aout"
3856         add_cppflags -D_GNU_SOURCE
3857         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3858         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3859         LIBSUF="_s.a"
3860         SLIBPREF=""
3861         SLIBSUF=".dll"
3862         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3863         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3864         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3865             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3866             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3867             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3868             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3869         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3870             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3871         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3872         enable dos_paths
3873         ;;
3874     gnu/kfreebsd)
3875         add_cppflags -D_BSD_SOURCE
3876         ;;
3877     gnu)
3878         ;;
3879     qnx)
3880         add_cppflags -D_QNX_SOURCE
3881         network_extralibs="-lsocket"
3882         ;;
3883     symbian)
3884         SLIBSUF=".dll"
3885         enable dos_paths
3886         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3887         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3888         add_ldflags -Wl,--target1-abs,--no-undefined \
3889                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3890                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3891         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3892                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3893                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3894         ;;
3895     osf1)
3896         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3897         ;;
3898     minix)
3899         ;;
3900     plan9)
3901         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3902                      -D_REENTRANT_SOURCE        \
3903                      -D_RESEARCH_SOURCE         \
3904                      -DFD_SETSIZE=96            \
3905                      -DHAVE_SOCK_OPTS
3906         add_compat strtod.o strtod=avpriv_strtod
3907         network_extralibs='-lbsd'
3908         exeobjs=compat/plan9/main.o
3909         cp_f='cp'
3910         ;;
3911     none)
3912         ;;
3913     *)
3914         die "Unknown OS '$target_os'."
3915         ;;
3916 esac
3917
3918 # determine libc flavour
3919
3920 probe_libc(){
3921     pfx=$1
3922     pfx_no_=${pfx%_}
3923     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3924     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3925         eval ${pfx}libc_type=uclibc
3926         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3927     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3928         eval ${pfx}libc_type=glibc
3929         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3930     # MinGW headers can be installed on Cygwin, so check for newlib first.
3931     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3932         eval ${pfx}libc_type=newlib
3933         add_${pfx}cppflags -U__STRICT_ANSI__
3934     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3935     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3936         eval ${pfx}libc_type=mingw64
3937         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3938         eval test \$${pfx_no_}cc_type = "gcc" &&
3939             add_${pfx}cppflags -D__printf__=__gnu_printf__
3940     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3941          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3942         eval ${pfx}libc_type=mingw32
3943         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3944             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3945             die "ERROR: MinGW32 runtime version must be >= 3.15."
3946         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3947         eval test \$${pfx_no_}cc_type = "gcc" &&
3948             add_${pfx}cppflags -D__printf__=__gnu_printf__
3949     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3950         eval ${pfx}libc_type=msvcrt
3951         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
3952             if [ "$pfx" = host_ ]; then
3953                 add_host_cppflags -Dsnprintf=_snprintf
3954             else
3955                 add_compat strtod.o strtod=avpriv_strtod
3956                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3957                                              _snprintf=avpriv_snprintf  \
3958                                              vsnprintf=avpriv_vsnprintf
3959             fi
3960         fi
3961         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3962         # 0x601 by default unless something else is set by the user.
3963         # This can easily lead to us detecting functions only present
3964         # in such new versions and producing binaries requiring windows 7.0.
3965         # Therefore explicitly set the default to XP unless the user has
3966         # set something else on the command line.
3967         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
3968         # family. For these cases, configure is free to use any functions
3969         # found in the SDK headers by default. (Alternatively, we could force
3970         # _WIN32_WINNT to 0x0602 in that case.)
3971         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3972             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
3973 #ifdef WINAPI_FAMILY
3974 #include <winapifamily.h>
3975 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
3976 #error not desktop
3977 #endif
3978 #endif
3979 EOF
3980     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3981         eval ${pfx}libc_type=klibc
3982     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3983         eval ${pfx}libc_type=bionic
3984     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3985         eval ${pfx}libc_type=solaris
3986         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3987     else
3988         eval ${pfx}libc_type=default
3989         add_${pfx}cppflags -D_DEFAULT_SOURCE
3990     fi
3991 }
3992
3993 probe_libc
3994 test -n "$libc_type" && enable libc_$libc_type
3995 probe_libc host_
3996 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3997
3998 case $libc_type in
3999     bionic)
4000         add_compat strtod.o strtod=avpriv_strtod
4001         ;;
4002 esac
4003
4004 # hacks for compiler/libc/os combinations
4005
4006 if enabled_all tms470 libc_glibc; then
4007     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4008     add_cppflags -D__USER_LABEL_PREFIX__=
4009     add_cppflags -D__builtin_memset=memset
4010     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4011     add_cflags   -pds=48    # incompatible redefinition of macro
4012 fi
4013
4014 if enabled_all ccc libc_glibc; then
4015     add_ldflags -Wl,-z,now  # calls to libots crash without this
4016 fi
4017
4018 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4019     add_cppflags '-I\$(SRC_PATH)/compat/float'
4020
4021 esc(){
4022     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4023 }
4024
4025 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
4026
4027 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4028
4029 set_default $PATHS_LIST
4030 set_default nm
4031
4032 # we need to build at least one lib type
4033 if ! enabled_any static shared; then
4034     cat <<EOF
4035 At least one library type must be built.
4036 Specify --enable-static to build the static libraries or --enable-shared to
4037 build the shared libraries as well. To only build the shared libraries specify
4038 --disable-static in addition to --enable-shared.
4039 EOF
4040     exit 1
4041 fi
4042
4043 die_license_disabled() {
4044     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4045 }
4046
4047 die_license_disabled gpl libcdio
4048 die_license_disabled gpl libx264
4049 die_license_disabled gpl libx265
4050 die_license_disabled gpl libxavs
4051 die_license_disabled gpl libxvid
4052 die_license_disabled gpl x11grab
4053
4054 die_license_disabled nonfree cuda
4055 die_license_disabled nonfree libfaac
4056 die_license_disabled nonfree libfdk_aac
4057 die_license_disabled nonfree libnpp
4058 die_license_disabled nonfree nvenc
4059 die_license_disabled nonfree openssl
4060
4061 die_license_disabled version3 libopencore_amrnb
4062 die_license_disabled version3 libopencore_amrwb
4063 die_license_disabled version3 libvo_aacenc
4064 die_license_disabled version3 libvo_amrwbenc
4065
4066 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4067
4068 disabled optimizations || check_cflags -fomit-frame-pointer
4069
4070 enable_weak_pic() {
4071     disabled pic && return
4072     enable pic
4073     add_cppflags -DPIC
4074     case "$target_os" in
4075     mingw*|cygwin*)
4076         ;;
4077     *)
4078         add_cflags -fPIC
4079         ;;
4080     esac
4081     add_asflags  -fPIC
4082 }
4083
4084 enabled pic && enable_weak_pic
4085
4086 check_cc <<EOF || die "Symbol mangling check failed."
4087 int ff_extern;
4088 EOF
4089 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4090 extern_prefix=${sym%%ff_extern*}
4091
4092 check_cc <<EOF && enable_weak inline_asm
4093 void foo(void) { __asm__ volatile ("" ::); }
4094 EOF
4095
4096 _restrict=
4097 for restrict_keyword in restrict __restrict__ __restrict; do
4098     check_cc <<EOF && _restrict=$restrict_keyword && break
4099 void foo(char * $restrict_keyword p);
4100 EOF
4101 done
4102
4103 check_cc <<EOF && enable pragma_deprecated
4104 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4105 EOF
4106
4107 check_cc <<EOF && enable attribute_packed
4108 struct { int x; } __attribute__((packed)) x;
4109 EOF
4110
4111 check_cc <<EOF && enable attribute_may_alias
4112 union { int x; } __attribute__((may_alias)) x;
4113 EOF
4114
4115 check_cc <<EOF || die "endian test failed"
4116 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4117 EOF
4118 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4119
4120 check_gas() {
4121     log "check_gas using '$as' as AS"
4122     # :vararg is used on aarch64, arm and ppc altivec
4123     check_as <<EOF || return 1
4124 .macro m n, y:vararg=0
4125 \n: .int \y
4126 .endm
4127 m x
4128 EOF
4129     # .altmacro is only used in arm asm
4130     ! enabled arm || check_as <<EOF || return 1
4131 .altmacro
4132 EOF
4133     enable gnu_as
4134     return 0
4135 }
4136
4137 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4138     nogas=:
4139     enabled_any arm aarch64 && nogas=die
4140     enabled_all ppc altivec && nogas=warn
4141     as_noop=-v
4142
4143     case $as_type in
4144         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4145         gcc)  gaspp_as_type=gas ;;
4146         *)    gaspp_as_type=$as_type ;;
4147     esac
4148
4149     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4150
4151     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4152         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4153
4154     if ! check_gas ; then
4155         as=${gas:=$as}
4156         check_gas || \
4157             $nogas "GNU assembler not found, install/update gas-preprocessor"
4158     fi
4159
4160     check_as <<EOF && enable as_func
4161 .func test
4162 .endfunc
4163 EOF
4164 fi
4165
4166 check_inline_asm inline_asm_labels '"1:\n"'
4167
4168 if enabled aarch64; then
4169     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4170     # internal assembler in clang 3.3 does not support this instruction
4171     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4172     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4173
4174     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4175
4176 elif enabled alpha; then
4177
4178     check_cflags -mieee
4179
4180 elif enabled arm; then
4181
4182     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4183     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4184     enabled thumb && check_cflags -mthumb || check_cflags -marm
4185
4186     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4187         enable vfp_args
4188     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4189         enable vfp_args
4190     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4191         case "${cross_prefix:-$cc}" in
4192             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4193             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4194 __asm__ (".eabi_attribute 28, 1");
4195 int main(void) { return 0; }
4196 EOF
4197         esac
4198         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4199     fi
4200
4201     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4202     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4203     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4204     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4205     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4206     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4207
4208     [ $target_os = linux ] || [ $target_os = android ] ||
4209         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4210             $ARCH_EXT_LIST_ARM
4211
4212     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4213
4214     check_as <<EOF && enable as_dn_directive
4215 ra .dn d0.i16
4216 .unreq ra
4217 EOF
4218
4219     # llvm's integrated assembler supports .object_arch from llvm 3.5
4220     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4221 .object_arch armv4
4222 EOF
4223
4224     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4225
4226 elif enabled mips; then
4227
4228     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4229
4230     # make sure that only an instruction set is enabled
4231     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4232
4233     if enabled mips64; then
4234         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4235             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4236                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4237     else
4238         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4239             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4240                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4241     fi
4242
4243 elif enabled parisc; then
4244
4245     if enabled gcc; then
4246         case $($cc -dumpversion) in
4247             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4248         esac
4249     fi
4250
4251 elif enabled ppc; then
4252
4253     enable local_aligned_8 local_aligned_16
4254
4255     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4256     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4257     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4258     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4259
4260     # AltiVec flags: The FSF version of GCC differs from the Apple version
4261     if enabled altivec; then
4262         check_cflags -maltivec -mabi=altivec &&
4263         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4264         check_cflags -faltivec
4265
4266         # check if our compiler supports Motorola AltiVec C API
4267         check_cc <<EOF || disable altivec
4268 $inc_altivec_h
4269 int main(void) {
4270     vector signed int v1 = (vector signed int) { 0 };
4271     vector signed int v2 = (vector signed int) { 1 };
4272     v1 = vec_add(v1, v2);
4273     return 0;
4274 }
4275 EOF
4276
4277         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4278     fi
4279
4280     if enabled vsx; then
4281         check_cflags -mvsx &&
4282         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4283     fi
4284
4285     if enabled power8; then
4286         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4287     fi
4288
4289 elif enabled x86; then
4290
4291     check_builtin rdtsc    intrin.h   "__rdtsc()"
4292     check_builtin mm_empty mmintrin.h "_mm_empty()"
4293
4294     enable local_aligned_8 local_aligned_16
4295
4296     # check whether EBP is available on x86
4297     # As 'i' is stored on the stack, this program will crash
4298     # if the base pointer is used to access it because the
4299     # base pointer is cleared in the inline assembly code.
4300     check_exec_crash <<EOF && enable ebp_available
4301 volatile int i=0;
4302 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4303 return i;
4304 EOF
4305
4306     # check whether EBX is available on x86
4307     check_inline_asm ebx_available '""::"b"(0)' &&
4308         check_inline_asm ebx_available '"":::"%ebx"'
4309
4310     # check whether xmm clobbers are supported
4311     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4312
4313     # check whether binutils is new enough to compile SSSE3/MMXEXT
4314     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4315     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4316
4317     if ! disabled_any asm mmx yasm; then
4318         if check_cmd $yasmexe --version; then
4319             enabled x86_64 && yasm_extra="-m amd64"
4320             yasm_debug="-g dwarf2"
4321         elif check_cmd nasm -v; then
4322             yasmexe=nasm
4323             yasm_debug="-g -F dwarf"
4324             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4325         fi
4326
4327         YASMFLAGS="-f $objformat $yasm_extra"
4328         enabled pic               && append YASMFLAGS "-DPIC"
4329         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4330         case "$objformat" in
4331             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4332         esac
4333
4334         check_yasm "movbe ecx, [5]" && enable yasm ||
4335             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4336         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4337         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4338         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4339         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4340         check_yasm "CPU amdnop" || disable cpunop
4341     fi
4342
4343     case "$cpu" in
4344         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4345             disable fast_clz
4346         ;;
4347     esac
4348
4349 fi
4350
4351 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4352
4353 check_ldflags -Wl,--as-needed
4354
4355 if check_func dlopen; then
4356     ldl=
4357 elif check_func dlopen -ldl; then
4358     ldl=-ldl
4359 fi
4360
4361 if ! disabled network; then
4362     check_func getaddrinfo $network_extralibs
4363     check_func inet_aton $network_extralibs
4364
4365     check_type netdb.h "struct addrinfo"
4366     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4367     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4368     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4369     check_type poll.h "struct pollfd"
4370     check_type netinet/sctp.h "struct sctp_event_subscribe"
4371     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4372     check_type netinet/in.h "struct sockaddr_in6"
4373     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4374     check_type "sys/types.h sys/socket.h" socklen_t
4375
4376     # Prefer arpa/inet.h over winsock2
4377     if check_header arpa/inet.h ; then
4378         check_func closesocket
4379     elif check_header winsock2.h ; then
4380         check_func_headers winsock2.h closesocket -lws2 &&
4381             network_extralibs="-lws2" ||
4382         { check_func_headers winsock2.h closesocket -lws2_32 &&
4383             network_extralibs="-lws2_32"; } || disable winsock2_h network
4384         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4385
4386         check_type ws2tcpip.h socklen_t
4387         check_type ws2tcpip.h "struct addrinfo"
4388         check_type ws2tcpip.h "struct group_source_req"
4389         check_type ws2tcpip.h "struct ip_mreq_source"
4390         check_type ws2tcpip.h "struct ipv6_mreq"
4391         check_type winsock2.h "struct pollfd"
4392         check_struct winsock2.h "struct sockaddr" sa_len
4393         check_type ws2tcpip.h "struct sockaddr_in6"
4394         check_type ws2tcpip.h "struct sockaddr_storage"
4395     else
4396         disable network
4397     fi
4398 fi
4399
4400 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4401 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4402 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4403 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4404
4405 case "$custom_allocator" in
4406     jemalloc)
4407         # jemalloc by default does not use a prefix
4408         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4409     ;;
4410     tcmalloc)
4411         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
4412         malloc_prefix=tc_
4413     ;;
4414 esac
4415
4416 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4417 check_func  ${malloc_prefix}memalign            && enable memalign
4418 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4419
4420 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4421     check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4422
4423 check_func  fcntl
4424 check_func  fork
4425 check_func  gethrtime
4426 check_func  getopt
4427 check_func  getrusage
4428 check_func  gettimeofday
4429 check_func  gmtime_r
4430 check_func  isatty
4431 check_func  localtime_r
4432 check_func  mach_absolute_time