vdpau: Support for VDPAU accelerated HEVC decoding
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89   --enable-rpath           use rpath when linking programs [USE WITH CARE]
90
91 Licensing options:
92   --enable-gpl             allow use of GPL code, the resulting libs
93                            and binaries will be under GPL [no]
94   --enable-version3        upgrade (L)GPL to version 3 [no]
95   --enable-nonfree         allow use of nonfree code, the resulting libs
96                            and binaries will be unredistributable [no]
97
98 Configuration options:
99   --disable-static         do not build static libraries [no]
100   --enable-shared          build shared libraries [no]
101   --enable-small           optimize for size instead of speed
102   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
103   --enable-gray            enable full grayscale support (slower color)
104   --disable-swscale-alpha  disable alpha channel support in swscale
105   --disable-all            disable building components, libraries and programs
106
107 Program options:
108   --disable-programs       do not build command line programs
109   --disable-avconv         disable avconv build
110   --disable-avplay         disable avplay build
111   --disable-avprobe        disable avprobe build
112   --disable-avserver       deprecated, does nothing
113
114 Component options:
115   --disable-doc            do not build documentation
116   --disable-avdevice       disable libavdevice build
117   --disable-avcodec        disable libavcodec build
118   --disable-avformat       disable libavformat build
119   --disable-avutil         disable libavutil build
120   --disable-swscale        disable libswscale build
121   --disable-avfilter       disable video filter support [no]
122   --disable-avresample     disable libavresample build [no]
123   --disable-pthreads       disable pthreads [auto]
124   --disable-w32threads     disable Win32 threads [auto]
125   --disable-network        disable network support [no]
126   --disable-dct            disable DCT code
127   --disable-error-resilience disable error resilience code
128   --disable-lsp            disable LSP code
129   --disable-lzo            disable LZO decoder code
130   --disable-mdct           disable MDCT code
131   --disable-rdft           disable RDFT code
132   --disable-fft            disable FFT code
133   --disable-faan           disable floating point AAN (I)DCT code
134
135 Hardware accelerators:
136   --enable-d3d11va         enable D3D11VA code
137   --enable-dxva2           enable DXVA2 code
138   --enable-vaapi           enable VAAPI code
139   --enable-vda             enable VDA code
140   --enable-vdpau           enable VDPAU code
141
142 Individual component options:
143   --disable-everything     disable all components listed below
144   --disable-encoder=NAME   disable encoder NAME
145   --enable-encoder=NAME    enable encoder NAME
146   --disable-encoders       disable all encoders
147   --disable-decoder=NAME   disable decoder NAME
148   --enable-decoder=NAME    enable decoder NAME
149   --disable-decoders       disable all decoders
150   --disable-hwaccel=NAME   disable hwaccel NAME
151   --enable-hwaccel=NAME    enable hwaccel NAME
152   --disable-hwaccels       disable all hwaccels
153   --disable-muxer=NAME     disable muxer NAME
154   --enable-muxer=NAME      enable muxer NAME
155   --disable-muxers         disable all muxers
156   --disable-demuxer=NAME   disable demuxer NAME
157   --enable-demuxer=NAME    enable demuxer NAME
158   --disable-demuxers       disable all demuxers
159   --enable-parser=NAME     enable parser NAME
160   --disable-parser=NAME    disable parser NAME
161   --disable-parsers        disable all parsers
162   --enable-bsf=NAME        enable bitstream filter NAME
163   --disable-bsf=NAME       disable bitstream filter NAME
164   --disable-bsfs           disable all bitstream filters
165   --enable-protocol=NAME   enable protocol NAME
166   --disable-protocol=NAME  disable protocol NAME
167   --disable-protocols      disable all protocols
168   --enable-indev=NAME      enable input device NAME
169   --disable-indev=NAME     disable input device NAME
170   --disable-indevs         disable input devices
171   --enable-outdev=NAME     enable output device NAME
172   --disable-outdev=NAME    disable output device NAME
173   --disable-outdevs        disable output devices
174   --disable-devices        disable all devices
175   --enable-filter=NAME     enable filter NAME
176   --disable-filter=NAME    disable filter NAME
177   --disable-filters        disable all filters
178
179 External library support:
180   --enable-avisynth        enable reading of AviSynth script files [no]
181   --enable-bzlib           enable bzlib [autodetect]
182   --enable-frei0r          enable frei0r video filtering
183   --enable-gnutls          enable gnutls [no]
184   --enable-libbs2b         enable bs2b DSP library [no]
185   --enable-libcdio         enable audio CD grabbing with libcdio
186   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
187                            and libraw1394 [no]
188   --enable-libdcadec       enable DCA decoding via libdcadec [no]
189   --enable-libfaac         enable AAC encoding via libfaac [no]
190   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
191   --enable-libfreetype     enable libfreetype [no]
192   --enable-libgsm          enable GSM de/encoding via libgsm [no]
193   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
194   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
195   --enable-libmfx          enable HW acceleration through libmfx
196   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
197   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
198   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
199   --enable-libopencv       enable video filtering via libopencv [no]
200   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
201   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
202   --enable-libopus         enable Opus de/encoding via libopus [no]
203   --enable-libpulse        enable Pulseaudio input via libpulse [no]
204   --enable-librtmp         enable RTMP[E] support via librtmp [no]
205   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
206   --enable-libsnappy       enable Snappy compression [no]
207   --enable-libspeex        enable Speex de/encoding via libspeex [no]
208   --enable-libtheora       enable Theora encoding via libtheora [no]
209   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
210   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
211   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
212   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
213   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
214   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
215   --enable-libwebp         enable WebP encoding via libwebp [no]
216   --enable-libx264         enable H.264 encoding via x264 [no]
217   --enable-libx265         enable HEVC encoding via x265 [no]
218   --enable-libxavs         enable AVS encoding via xavs [no]
219   --enable-libxcb          enable X11 grabbing using XCB [no]
220   --enable-libxcb-shm      enable X11 grabbing shm communication [auto]
221   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [auto]
222   --enable-libxvid         enable Xvid encoding via xvidcore,
223                            native MPEG-4/Xvid encoder exists [no]
224   --enable-mmal            enable decoding via MMAL [no]
225   --enable-nvenc           enable encoding via NVENC [no]
226   --enable-openssl         enable openssl [no]
227   --enable-x11grab         enable X11 grabbing (legacy) [no]
228   --enable-zlib            enable zlib [autodetect]
229
230 Toolchain options:
231   --arch=ARCH              select architecture [$arch]
232   --cpu=CPU                select the minimum required CPU (affects
233                            instruction selection, may crash on older CPUs)
234   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
235   --enable-cross-compile   assume a cross-compiler is used
236   --sysroot=PATH           root of cross-build tree
237   --sysinclude=PATH        location of cross-build system headers
238   --target-os=OS           compiler targets OS [$target_os]
239   --target-exec=CMD        command to run executables on target
240   --target-path=DIR        path to view of build directory on target
241   --target-samples=DIR     path to samples directory on target
242   --toolchain=NAME         set tool defaults according to NAME
243   --nm=NM                  use nm tool
244   --ar=AR                  use archive tool AR [$ar_default]
245   --as=AS                  use assembler AS [$as_default]
246   --cc=CC                  use C compiler CC [$cc_default]
247   --objcc=OCC              use ObjC compiler OCC [$cc_default]
248   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
249   --ld=LD                  use linker LD
250   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
251   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
252   --host-cc=HOSTCC         use host C compiler HOSTCC
253   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
254   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
255   --host-ld=HOSTLD         use host linker HOSTLD
256   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
257   --host-libs=HLIBS        use libs HLIBS when linking for host
258   --host-os=OS             compiler host OS [$target_os]
259   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
260   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
261   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
262   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
263   --extra-libs=ELIBS       add ELIBS [$ELIBS]
264   --extra-version=STRING   version string suffix []
265   --optflags=OPTFLAGS      override optimization-related compiler flags
266   --build-suffix=SUFFIX    library name suffix []
267   --enable-pic             build position-independent code
268   --enable-thumb           compile for Thumb instruction set
269   --enable-lto             use link-time optimization
270   --env="ENV=override"     override the environment variables
271
272 Advanced options (experts only):
273   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
274   --custom-allocator=NAME  use a supported custom allocator
275   --disable-symver         disable symbol versioning
276   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
277   --disable-safe-bitstream-reader
278                            disable buffer boundary checking in bitreaders
279                            (faster, but may crash)
280   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
281   --enable-sram            allow use of on-chip SRAM
282
283 Optimization options (experts only):
284   --disable-asm            disable all assembly optimizations
285   --disable-altivec        disable AltiVec optimizations
286   --disable-vsx            disable VSX optimizations
287   --disable-power8         disable POWER8 optimizations
288   --disable-amd3dnow       disable 3DNow! optimizations
289   --disable-amd3dnowext    disable 3DNow! extended optimizations
290   --disable-mmx            disable MMX optimizations
291   --disable-mmxext         disable MMXEXT optimizations
292   --disable-sse            disable SSE optimizations
293   --disable-sse2           disable SSE2 optimizations
294   --disable-sse3           disable SSE3 optimizations
295   --disable-ssse3          disable SSSE3 optimizations
296   --disable-sse4           disable SSE4 optimizations
297   --disable-sse42          disable SSE4.2 optimizations
298   --disable-avx            disable AVX optimizations
299   --disable-xop            disable XOP optimizations
300   --disable-fma3           disable FMA3 optimizations
301   --disable-fma4           disable FMA4 optimizations
302   --disable-avx2           disable AVX2 optimizations
303   --disable-armv5te        disable armv5te optimizations
304   --disable-armv6          disable armv6 optimizations
305   --disable-armv6t2        disable armv6t2 optimizations
306   --disable-vfp            disable VFP optimizations
307   --disable-neon           disable NEON optimizations
308   --disable-inline-asm     disable use of inline assembly
309   --disable-yasm           disable use of nasm/yasm assembly
310
311 Developer options (useful when working on Libav itself):
312   --disable-debug          disable debugging symbols
313   --enable-debug=LEVEL     set the debug level [$debuglevel]
314   --disable-optimizations  disable compiler optimizations
315   --enable-extra-warnings  enable more compiler warnings
316   --samples=PATH           location of test samples for FATE, if not set use
317                            \$LIBAV_SAMPLES at make invocation time.
318   --enable-neon-clobber-test check NEON registers for clobbering (should be
319                            used only for debugging purposes)
320   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
321                            should be used only for debugging purposes)
322   --enable-random          randomly enable/disable components
323   --disable-random
324   --enable-random=LIST     randomly enable/disable specific components or
325   --disable-random=LIST    component groups. LIST is a comma-separated list
326                            of NAME[:PROB] entries where NAME is a component
327                            (group) and PROB the probability associated with
328                            NAME (default 0.5).
329   --random-seed=VALUE      seed value for --enable/disable-random
330   --disable-valgrind-backtrace do not print a backtrace under Valgrind
331                            (only applies to --disable-optimizations builds)
332
333 NOTE: Object files are built at the place where configure is launched.
334 EOF
335   exit 0
336 }
337
338 quotes='""'
339
340 log(){
341     echo "$@" >> $logfile
342 }
343
344 log_file(){
345     log BEGIN $1
346     i=1
347     while read line; do
348         printf '%5s   %s\n' "${i}" "${line}"
349         i=$(($i+1))
350     done < $1 >> $logfile
351     log END $1
352 }
353
354 echolog(){
355     log "$@"
356     echo "$@"
357 }
358
359 warn(){
360     log "WARNING: $*"
361     WARNINGS="${WARNINGS}WARNING: $*\n"
362 }
363
364 die(){
365     echolog "$@"
366     cat <<EOF
367
368 If you think configure made a mistake, make sure you are using the latest
369 version from Git.  If the latest version fails, report the problem to the
370 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
371 EOF
372     if disabled logging; then
373         cat <<EOF
374 Rerun configure with logging enabled (do not use --disable-logging), and
375 include the log this produces with your report.
376 EOF
377     else
378         cat <<EOF
379 Include the log file "$logfile" produced by configure as this will help
380 solving the problem.
381 EOF
382     fi
383     exit 1
384 }
385
386 # Avoid locale weirdness, besides we really just want to translate ASCII.
387 toupper(){
388     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
389 }
390
391 tolower(){
392     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
393 }
394
395 c_escape(){
396     echo "$*" | sed 's/["\\]/\\\0/g'
397 }
398
399 sh_quote(){
400     v=$(echo "$1" | sed "s/'/'\\\\''/g")
401     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
402     echo "$v"
403 }
404
405 cleanws(){
406     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
407 }
408
409 filter(){
410     pat=$1
411     shift
412     for v; do
413         eval "case $v in $pat) echo $v ;; esac"
414     done
415 }
416
417 filter_out(){
418     pat=$1
419     shift
420     for v; do
421         eval "case $v in $pat) ;; *) echo $v ;; esac"
422     done
423 }
424
425 map(){
426     m=$1
427     shift
428     for v; do eval $m; done
429 }
430
431 add_suffix(){
432     suffix=$1
433     shift
434     for v; do echo ${v}${suffix}; done
435 }
436
437 set_all(){
438     value=$1
439     shift
440     for var in $*; do
441         eval $var=$value
442     done
443 }
444
445 set_weak(){
446     value=$1
447     shift
448     for var; do
449         eval : \${$var:=$value}
450     done
451 }
452
453 sanitize_var_name(){
454     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
455 }
456
457 set_safe(){
458     var=$1
459     shift
460     eval $(sanitize_var_name "$var")='$*'
461 }
462
463 get_safe(){
464     eval echo \$$(sanitize_var_name "$1")
465 }
466
467 pushvar(){
468     for pvar in $*; do
469         eval level=\${${pvar}_level:=0}
470         eval ${pvar}_${level}="\$$pvar"
471         eval ${pvar}_level=$(($level+1))
472     done
473 }
474
475 popvar(){
476     for pvar in $*; do
477         eval level=\${${pvar}_level:-0}
478         test $level = 0 && continue
479         eval level=$(($level-1))
480         eval $pvar="\${${pvar}_${level}}"
481         eval ${pvar}_level=$level
482         eval unset ${pvar}_${level}
483     done
484 }
485
486 enable(){
487     set_all yes $*
488 }
489
490 check_requested() {
491     for var; do
492         eval test "x\$${var#!}_requested" = "xyes" &&  die "${var#*_} ${var/_*} cannot be enabled"
493     done
494 }
495
496 disable(){
497     set_all no $*
498     check_requested $*
499 }
500
501 enable_weak(){
502     set_weak yes $*
503 }
504
505 disable_weak(){
506     set_weak no $*
507 }
508
509 enable_safe(){
510     for var; do
511         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
512     done
513 }
514
515 disable_safe(){
516     for var; do
517         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
518     done
519 }
520
521 do_enable_deep(){
522     for var; do
523         enabled $var && continue
524         eval sel="\$${var}_select"
525         eval sgs="\$${var}_suggest"
526         pushvar var sgs
527         enable_deep $sel
528         popvar sgs
529         enable_deep_weak $sgs
530         popvar var
531     done
532 }
533
534 enable_deep(){
535     do_enable_deep $*
536     enable $*
537 }
538
539 enable_deep_weak(){
540     for var; do
541         disabled $var && continue
542         pushvar var
543         do_enable_deep $var
544         popvar var
545         enable_weak $var
546     done
547 }
548
549 do_enable_deep_force(){
550     for var; do
551         enabled $var && continue
552         eval sel="\$${var}_select\ \$${var}_suggest\ \$${var}_select_any"
553         pushvar var
554         enable_deep_force $sel
555         popvar var
556     done
557 }
558
559 enable_deep_force(){
560     do_enable_deep_force $*
561     enable $*
562 }
563
564 request(){
565     for var; do
566         enable ${var}_requested
567     done
568     enable_deep_force $*
569 }
570
571 enabled(){
572     test "${1#!}" = "$1" && op== || op=!=
573     eval test "x\$${1#!}" $op "xyes"
574 }
575
576 disabled(){
577     test "${1#!}" = "$1" && op== || op=!=
578     eval test "x\$${1#!}" $op "xno"
579 }
580
581 enabled_all(){
582     for opt; do
583         enabled $opt || return 1
584     done
585 }
586
587 disabled_all(){
588     for opt; do
589         disabled $opt || return 1
590     done
591 }
592
593 enabled_any(){
594     for opt; do
595         enabled $opt && return 0
596     done
597 }
598
599 disabled_any(){
600     for opt; do
601         disabled $opt && return 0
602     done
603     return 1
604 }
605
606 set_default(){
607     for opt; do
608         eval : \${$opt:=\$${opt}_default}
609     done
610 }
611
612 is_in(){
613     value=$1
614     shift
615     for var in $*; do
616         [ $var = $value ] && return 0
617     done
618     return 1
619 }
620
621 do_check_deps(){
622     for cfg; do
623         cfg="${cfg#!}"
624         enabled ${cfg}_checking && die "Circular dependency for $cfg."
625         disabled ${cfg}_checking && continue
626         enable ${cfg}_checking
627         append allopts $cfg
628
629         eval dep_all="\$${cfg}_deps"
630         eval dep_any="\$${cfg}_deps_any\ \$${cfg}_select_any"
631         eval dep_sel="\$${cfg}_select"
632         eval dep_sgs="\$${cfg}_suggest"
633         eval dep_ifa="\$${cfg}_if"
634         eval dep_ifn="\$${cfg}_if_any"
635
636         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
637         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
638         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
639
640         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
641         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
642         enabled_all  $dep_all || disable $cfg
643         enabled_any  $dep_any || disable $cfg
644         disabled_any $dep_sel && disable $cfg
645
646         if enabled $cfg; then
647             enable_deep $dep_sel
648             enable_deep_weak $dep_sgs
649         fi
650
651         disable ${cfg}_checking
652     done
653 }
654
655 check_deps(){
656     unset allopts
657
658     do_check_deps "$@"
659
660     for cfg in $allopts; do
661         enabled $cfg || continue
662         eval dep_extralibs="\$${cfg}_extralibs"
663         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
664     done
665 }
666
667 print_config(){
668     pfx=$1
669     files=$2
670     shift 2
671     map 'eval echo "$v \${$v:-no}"' "$@" |
672     awk "BEGIN { split(\"$files\", files) }
673         {
674             c = \"$pfx\" toupper(\$1);
675             v = \$2;
676             sub(/yes/, 1, v);
677             sub(/no/,  0, v);
678             for (f in files) {
679                 file = files[f];
680                 if (file ~ /\\.h\$/) {
681                     printf(\"#define %s %d\\n\", c, v) >>file;
682                 } else if (file ~ /\\.asm\$/) {
683                     printf(\"%%define %s %d\\n\", c, v) >>file;
684                 } else if (file ~ /\\.mak\$/) {
685                     n = -v ? \"\" : \"!\";
686                     printf(\"%s%s=yes\\n\", n, c) >>file;
687                 }
688             }
689         }"
690 }
691
692 print_enabled(){
693     suf=$1
694     shift
695     for v; do
696         enabled $v && printf "%s\n" ${v%$suf};
697     done
698 }
699
700 append(){
701     var=$1
702     shift
703     eval "$var=\"\$$var $*\""
704 }
705
706 prepend(){
707     var=$1
708     shift
709     eval "$var=\"$* \$$var\""
710 }
711
712 unique(){
713     var=$1
714     uniq_list=""
715     for tok in $(eval echo \$$var); do
716         uniq_list="$(filter_out $tok $uniq_list) $tok"
717     done
718     eval "$var=\"${uniq_list}\""
719 }
720
721 add_cppflags(){
722     append CPPFLAGS "$@"
723 }
724
725 add_cflags(){
726     append CFLAGS $($cflags_filter "$@")
727 }
728
729 add_asflags(){
730     append ASFLAGS $($asflags_filter "$@")
731 }
732
733 add_objcflags(){
734     append OBJCFLAGS $($objcflags_filter "$@")
735 }
736
737 add_ldflags(){
738     append LDFLAGS $($ldflags_filter "$@")
739 }
740
741 add_ldexeflags(){
742     append LDEXEFLAGS $($ldflags_filter "$@")
743 }
744
745 add_stripflags(){
746     append STRIPFLAGS "$@"
747 }
748
749 add_extralibs(){
750     prepend extralibs $($ldflags_filter "$@")
751 }
752
753 add_host_cppflags(){
754     append host_cppflags "$@"
755 }
756
757 add_host_cflags(){
758     append host_cflags $($host_cflags_filter "$@")
759 }
760
761 add_host_ldflags(){
762     append host_ldflags $($host_ldflags_filter "$@")
763 }
764
765 add_compat(){
766     append compat_objs $1
767     shift
768     map 'add_cppflags -D$v' "$@"
769 }
770
771 check_cmd(){
772     log "$@"
773     "$@" >> $logfile 2>&1
774 }
775
776 cc_o(){
777     eval printf '%s\\n' $CC_O
778 }
779
780 cc_e(){
781     eval printf '%s\\n' $CC_E
782 }
783
784 check_cc(){
785     log check_cc "$@"
786     cat > $TMPC
787     log_file $TMPC
788     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
789 }
790
791 check_objcc(){
792     log check_objcc "$@"
793     cat > $TMPC
794     log_file $TMPC
795     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
796 }
797
798 check_cpp(){
799     log check_cpp "$@"
800     cat > $TMPC
801     log_file $TMPC
802     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
803 }
804
805 as_o(){
806     eval printf '%s\\n' $AS_O
807 }
808
809 check_as(){
810     log check_as "$@"
811     cat > $TMPS
812     log_file $TMPS
813     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
814 }
815
816 check_inline_asm(){
817     log check_inline_asm "$@"
818     name="$1"
819     code="$2"
820     shift 2
821     disable $name
822     check_cc "$@" <<EOF && enable $name
823 void foo(void){ __asm__ volatile($code); }
824 EOF
825 }
826
827 check_insn(){
828     log check_insn "$@"
829     check_inline_asm ${1}_inline "\"$2\""
830     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
831 }
832
833 check_yasm(){
834     log check_yasm "$@"
835     echo "$1" > $TMPS
836     log_file $TMPS
837     shift 1
838     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
839 }
840
841 ld_o(){
842     eval printf '%s\\n' $LD_O
843 }
844
845 check_ld(){
846     log check_ld "$@"
847     flags=$(filter_out '-l*' "$@")
848     libs=$(filter '-l*' "$@")
849     check_cc $($cflags_filter $flags) || return
850     flags=$($ldflags_filter $flags)
851     libs=$($ldflags_filter $libs)
852     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
853 }
854
855 print_include(){
856     hdr=$1
857     test "${hdr%.h}" = "${hdr}" &&
858         echo "#include $hdr"    ||
859         echo "#include <$hdr>"
860 }
861
862 check_code(){
863     log check_code "$@"
864     check=$1
865     headers=$2
866     code=$3
867     shift 3
868     {
869         for hdr in $headers; do
870             print_include $hdr
871         done
872         echo "int main(void) { $code; return 0; }"
873     } | check_$check "$@"
874 }
875
876 check_cppflags(){
877     log check_cppflags "$@"
878     check_cc "$@" <<EOF && append CPPFLAGS "$@"
879 int x;
880 EOF
881 }
882
883 test_cflags(){
884     log test_cflags "$@"
885     set -- $($cflags_filter "$@")
886     check_cc "$@" <<EOF
887 int x;
888 EOF
889 }
890
891 check_cflags(){
892     log check_cflags "$@"
893     test_cflags "$@" && add_cflags "$@"
894 }
895
896 test_objcflags(){
897     log test_cflags "$@"
898     set -- $($cflags_filter "$@")
899     check_objcc "$@" <<EOF
900 int x;
901 EOF
902 }
903
904 check_objcflags(){
905     log check_cflags "$@"
906     test_objcflags "$@" && add_objcflags "$@"
907 }
908
909 test_ldflags(){
910     log test_ldflags "$@"
911     check_ld "$@" <<EOF
912 int main(void){ return 0; }
913 EOF
914 }
915
916 check_ldflags(){
917     log check_ldflags "$@"
918     test_ldflags "$@" && add_ldflags "$@"
919 }
920
921 test_stripflags(){
922     log test_stripflags "$@"
923     # call check_cc to get a fresh TMPO
924     check_cc <<EOF
925 int main(void) { return 0; }
926 EOF
927     check_cmd $strip $STRIPFLAGS "$@" $TMPO
928 }
929
930 check_stripflags(){
931     log check_stripflags "$@"
932     test_stripflags "$@" && add_stripflags "$@"
933 }
934
935 check_header(){
936     log check_header "$@"
937     header=$1
938     shift
939     disable_safe $header
940     check_cpp "$@" <<EOF && enable_safe $header
941 #include <$header>
942 int x;
943 EOF
944 }
945
946 check_func(){
947     log check_func "$@"
948     func=$1
949     shift
950     disable $func
951     check_ld "$@" <<EOF && enable $func
952 extern int $func();
953 int main(void){ $func(); }
954 EOF
955 }
956
957 check_mathfunc(){
958     log check_mathfunc "$@"
959     func=$1
960     narg=$2
961     shift 2
962     test $narg = 2 && args="f, g" || args="f"
963     disable $func
964     check_ld "$@" <<EOF && enable $func
965 #include <math.h>
966 float foo(float f, float g) { return $func($args); }
967 int main(void){ return 0; }
968 EOF
969 }
970
971 check_func_headers(){
972     log check_func_headers "$@"
973     headers=$1
974     funcs=$2
975     shift 2
976     {
977         for hdr in $headers; do
978             print_include $hdr
979         done
980         for func in $funcs; do
981             echo "long check_$func(void) { return (long) $func; }"
982         done
983         echo "int main(void) { return 0; }"
984     } | check_ld "$@" && enable $funcs && enable_safe $headers
985 }
986
987 check_cpp_condition(){
988     log check_cpp_condition "$@"
989     header=$1
990     condition=$2
991     shift 2
992     check_cpp "$@" <<EOF
993 #include <$header>
994 #if !($condition)
995 #error "unsatisfied condition: $condition"
996 #endif
997 EOF
998 }
999
1000 check_lib(){
1001     log check_lib "$@"
1002     header="$1"
1003     func="$2"
1004     shift 2
1005     check_header $header && check_func $func "$@" && add_extralibs "$@"
1006 }
1007
1008 check_lib2(){
1009     log check_lib2 "$@"
1010     headers="$1"
1011     funcs="$2"
1012     shift 2
1013     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1014 }
1015
1016 check_pkg_config(){
1017     log check_pkg_config "$@"
1018     pkg="$1"
1019     headers="$2"
1020     funcs="$3"
1021     shift 3
1022     check_cmd $pkg_config --exists --print-errors $pkg || return
1023     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1024     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1025     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1026         set_safe "${pkg}_cflags" $pkg_cflags   &&
1027         set_safe "${pkg}_libs"   $pkg_libs
1028 }
1029
1030 check_exec(){
1031     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1032 }
1033
1034 check_exec_crash(){
1035     code=$(cat)
1036
1037     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1038     # are safe but may not be available everywhere.  Thus we use
1039     # raise(SIGTERM) instead.  The check is run in a subshell so we
1040     # can redirect the "Terminated" message from the shell.  SIGBUS
1041     # is not defined by standard C so it is used conditionally.
1042
1043     (check_exec "$@") >> $logfile 2>&1 <<EOF
1044 #include <signal.h>
1045 static void sighandler(int sig){
1046     raise(SIGTERM);
1047 }
1048 int foo(void){
1049     $code
1050 }
1051 int (*func_ptr)(void) = foo;
1052 int main(void){
1053     signal(SIGILL, sighandler);
1054     signal(SIGFPE, sighandler);
1055     signal(SIGSEGV, sighandler);
1056 #ifdef SIGBUS
1057     signal(SIGBUS, sighandler);
1058 #endif
1059     return func_ptr();
1060 }
1061 EOF
1062 }
1063
1064 check_type(){
1065     log check_type "$@"
1066     headers=$1
1067     type=$2
1068     shift 2
1069     disable_safe "$type"
1070     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1071 }
1072
1073 check_struct(){
1074     log check_struct "$@"
1075     headers=$1
1076     struct=$2
1077     member=$3
1078     shift 3
1079     disable_safe "${struct}_${member}"
1080     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1081         enable_safe "${struct}_${member}"
1082 }
1083
1084 check_builtin(){
1085     log check_builtin "$@"
1086     name=$1
1087     headers=$2
1088     builtin=$3
1089     shift 3
1090     disable "$name"
1091     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1092 }
1093
1094 check_compile_assert(){
1095     log check_compile_assert "$@"
1096     name=$1
1097     headers=$2
1098     condition=$3
1099     shift 3
1100     disable "$name"
1101     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1102 }
1103
1104 require(){
1105     name="$1"
1106     header="$2"
1107     func="$3"
1108     shift 3
1109     check_lib $header $func "$@" || die "ERROR: $name not found"
1110 }
1111
1112 require2(){
1113     name="$1"
1114     headers="$2"
1115     func="$3"
1116     shift 3
1117     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1118 }
1119
1120 require_pkg_config(){
1121     pkg="$1"
1122     check_pkg_config "$@" || die "ERROR: $pkg not found"
1123     add_cflags    $(get_safe "${pkg}_cflags")
1124     add_extralibs $(get_safe "${pkg}_libs")
1125 }
1126
1127 hostcc_e(){
1128     eval printf '%s\\n' $HOSTCC_E
1129 }
1130
1131 hostcc_o(){
1132     eval printf '%s\\n' $HOSTCC_O
1133 }
1134
1135 check_host_cc(){
1136     log check_host_cc "$@"
1137     cat > $TMPC
1138     log_file $TMPC
1139     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1140 }
1141
1142 check_host_cpp(){
1143     log check_host_cpp "$@"
1144     cat > $TMPC
1145     log_file $TMPC
1146     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1147 }
1148
1149 check_host_cppflags(){
1150     log check_host_cppflags "$@"
1151     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1152 int x;
1153 EOF
1154 }
1155
1156 check_host_cflags(){
1157     log check_host_cflags "$@"
1158     set -- $($host_cflags_filter "$@")
1159     check_host_cc "$@" <<EOF && append host_cflags "$@"
1160 int x;
1161 EOF
1162 }
1163
1164 check_host_cpp_condition(){
1165     log check_host_cpp_condition "$@"
1166     header=$1
1167     condition=$2
1168     shift 2
1169     check_host_cpp "$@" <<EOF
1170 #include <$header>
1171 #if !($condition)
1172 #error "unsatisfied condition: $condition"
1173 #endif
1174 EOF
1175 }
1176
1177 apply(){
1178     file=$1
1179     shift
1180     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1181 }
1182
1183 cp_if_changed(){
1184     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1185     mkdir -p "$(dirname $2)"
1186     $cp_f "$1" "$2"
1187 }
1188
1189 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1190 # system-dependent things.
1191
1192 AVCODEC_COMPONENTS="
1193     bsfs
1194     decoders
1195     encoders
1196     hwaccels
1197     parsers
1198 "
1199
1200 AVDEVICE_COMPONENTS="
1201     indevs
1202     outdevs
1203 "
1204 AVFILTER_COMPONENTS="
1205     filters
1206 "
1207 AVFORMAT_COMPONENTS="
1208     demuxers
1209     muxers
1210     protocols
1211 "
1212
1213 AVRESAMPLE_COMPONENTS=""
1214 AVUTIL_COMPONENTS=""
1215
1216 COMPONENT_LIST="
1217     $AVCODEC_COMPONENTS
1218     $AVDEVICE_COMPONENTS
1219     $AVFILTER_COMPONENTS
1220     $AVFORMAT_COMPONENTS
1221     $AVRESAMPLE_COMPONENTS
1222     $AVUTIL_COMPONENTS
1223 "
1224
1225 EXAMPLE_LIST="
1226     avcodec_example
1227     filter_audio_example
1228     metadata_example
1229     output_example
1230     qsvdec_example
1231     transcode_aac_example
1232 "
1233
1234 EXTERNAL_LIBRARY_LIST="
1235     avisynth
1236     bzlib
1237     frei0r
1238     gnutls
1239     libbs2b
1240     libcdio
1241     libdc1394
1242     libdcadec
1243     libfaac
1244     libfdk_aac
1245     libfontconfig
1246     libfreetype
1247     libgsm
1248     libilbc
1249     libkvazaar
1250     libmfx
1251     libmp3lame
1252     libopencore_amrnb
1253     libopencore_amrwb
1254     libopencv
1255     libopenh264
1256     libopenjpeg
1257     libopus
1258     libpulse
1259     librtmp
1260     libschroedinger
1261     libsnappy
1262     libspeex
1263     libtheora
1264     libtwolame
1265     libvo_aacenc
1266     libvo_amrwbenc
1267     libvorbis
1268     libvpx
1269     libwavpack
1270     libwebp
1271     libx264
1272     libx265
1273     libxavs
1274     libxcb
1275     libxcb_shm
1276     libxcb_xfixes
1277     libxvid
1278     mmal
1279     nvenc
1280     openssl
1281     x11grab
1282     zlib
1283 "
1284
1285 FEATURE_LIST="
1286     gray
1287     hardcoded_tables
1288     runtime_cpudetect
1289     safe_bitstream_reader
1290     shared
1291     small
1292     sram
1293     static
1294     swscale_alpha
1295 "
1296
1297 HWACCEL_LIST="
1298     d3d11va
1299     dxva2
1300     vaapi
1301     vda
1302     vdpau
1303 "
1304
1305 LIBRARY_LIST="
1306     avcodec
1307     avdevice
1308     avfilter
1309     avformat
1310     avresample
1311     avutil
1312     swscale
1313 "
1314
1315 LICENSE_LIST="
1316     gpl
1317     nonfree
1318     version3
1319 "
1320
1321 PROGRAM_LIST="
1322     avconv
1323     avplay
1324     avprobe
1325 "
1326
1327 SUBSYSTEM_LIST="
1328     dct
1329     doc
1330     error_resilience
1331     faan
1332     fft
1333     lsp
1334     lzo
1335     mdct
1336     network
1337     rdft
1338 "
1339
1340 CONFIG_LIST="
1341     $COMPONENT_LIST
1342     $EXAMPLE_LIST
1343     $EXTERNAL_LIBRARY_LIST
1344     $FEATURE_LIST
1345     $HWACCEL_LIST
1346     $LICENSE_LIST
1347     $LIBRARY_LIST
1348     $PROGRAM_LIST
1349     $SUBSYSTEM_LIST
1350     memalign_hack
1351     neon_clobber_test
1352     pic
1353     pod2man
1354     texi2html
1355     thumb
1356     valgrind_backtrace
1357     xmm_clobber_test
1358 "
1359
1360 THREADS_LIST="
1361     pthreads
1362     w32threads
1363 "
1364
1365 ATOMICS_LIST="
1366     atomics_gcc
1367     atomics_suncc
1368     atomics_win32
1369 "
1370
1371 ARCH_LIST="
1372     aarch64
1373     alpha
1374     arm
1375     avr32
1376     avr32_ap
1377     avr32_uc
1378     bfin
1379     ia64
1380     m68k
1381     mips
1382     mips64
1383     parisc
1384     ppc
1385     ppc64
1386     s390
1387     sh4
1388     sparc
1389     sparc64
1390     tilegx
1391     tilepro
1392     tomi
1393     x86
1394     x86_32
1395     x86_64
1396 "
1397
1398 ARCH_EXT_LIST_ARM="
1399     armv5te
1400     armv6
1401     armv6t2
1402     armv8
1403     neon
1404     vfp
1405     vfpv3
1406 "
1407
1408 ARCH_EXT_LIST_X86_SIMD="
1409     amd3dnow
1410     amd3dnowext
1411     avx
1412     avx2
1413     fma3
1414     fma4
1415     mmx
1416     mmxext
1417     sse
1418     sse2
1419     sse3
1420     sse4
1421     sse42
1422     ssse3
1423     xop
1424 "
1425
1426 ARCH_EXT_LIST_PPC="
1427     altivec
1428     dcbzl
1429     ldbrx
1430     power8
1431     ppc4xx
1432     vsx
1433 "
1434
1435 ARCH_EXT_LIST_X86="
1436     $ARCH_EXT_LIST_X86_SIMD
1437     cpunop
1438     i686
1439 "
1440
1441 ARCH_EXT_LIST_MIPS="
1442     loongson
1443     mips32r1
1444     mips64r1
1445     mips32r2
1446     mips64r2
1447     mips32r6
1448     mips64r6
1449 "
1450
1451 ARCH_EXT_LIST="
1452     $ARCH_EXT_LIST_ARM
1453     $ARCH_EXT_LIST_MIPS
1454     $ARCH_EXT_LIST_PPC
1455     $ARCH_EXT_LIST_X86
1456     vis
1457 "
1458
1459 ARCH_FEATURES="
1460     aligned_stack
1461     fast_64bit
1462     fast_clz
1463     fast_cmov
1464     local_aligned_8
1465     local_aligned_16
1466     simd_align_16
1467 "
1468
1469 BUILTIN_LIST="
1470     atomic_cas_ptr
1471     machine_rw_barrier
1472     MemoryBarrier
1473     mm_empty
1474     rdtsc
1475     sync_val_compare_and_swap
1476 "
1477 HAVE_LIST_CMDLINE="
1478     inline_asm
1479     symver
1480     yasm
1481 "
1482
1483 HAVE_LIST_PUB="
1484     bigendian
1485     fast_unaligned
1486 "
1487
1488 HEADERS_LIST="
1489     AVFoundation_AVFoundation_h
1490     alsa_asoundlib_h
1491     altivec_h
1492     arpa_inet_h
1493     cdio_paranoia_h
1494     cdio_paranoia_paranoia_h
1495     dev_bktr_ioctl_bt848_h
1496     dev_bktr_ioctl_meteor_h
1497     dev_ic_bt8xx_h
1498     dev_video_bktr_ioctl_bt848_h
1499     dev_video_meteor_ioctl_meteor_h
1500     direct_h
1501     dlfcn_h
1502     d3d11_h
1503     dxva_h
1504     gsm_h
1505     io_h
1506     mach_mach_time_h
1507     machine_ioctl_bt848_h
1508     machine_ioctl_meteor_h
1509     malloc_h
1510     poll_h
1511     sndio_h
1512     soundcard_h
1513     sys_mman_h
1514     sys_param_h
1515     sys_resource_h
1516     sys_select_h
1517     sys_soundcard_h
1518     sys_time_h
1519     sys_un_h
1520     sys_videoio_h
1521     unistd_h
1522     valgrind_valgrind_h
1523     windows_h
1524     winsock2_h
1525 "
1526
1527 INTRINSICS_LIST="
1528     intrinsics_neon
1529 "
1530
1531 MATH_FUNCS="
1532     atanf
1533     atan2f
1534     cbrtf
1535     cosf
1536     exp2
1537     exp2f
1538     expf
1539     isinf
1540     isnan
1541     ldexpf
1542     llrint
1543     llrintf
1544     log2
1545     log2f
1546     log10f
1547     lrint
1548     lrintf
1549     powf
1550     rint
1551     round
1552     roundf
1553     sinf
1554     trunc
1555     truncf
1556 "
1557
1558 SYSTEM_FUNCS="
1559     aligned_malloc
1560     clock_gettime
1561     closesocket
1562     CommandLineToArgvW
1563     CoTaskMemFree
1564     CryptGenRandom
1565     dlopen
1566     fcntl
1567     flt_lim
1568     fork
1569     getaddrinfo
1570     gethrtime
1571     getopt
1572     GetProcessAffinityMask
1573     GetProcessMemoryInfo
1574     GetProcessTimes
1575     getrusage
1576     GetSystemTimeAsFileTime
1577     gettimeofday
1578     gmtime_r
1579     inet_aton
1580     isatty
1581     jack_port_get_latency_range
1582     LoadLibrary
1583     localtime_r
1584     mach_absolute_time
1585     MapViewOfFile
1586     memalign
1587     mkstemp
1588     mmap
1589     mprotect
1590     nanosleep
1591     posix_memalign
1592     sched_getaffinity
1593     SetConsoleTextAttribute
1594     setmode
1595     setrlimit
1596     Sleep
1597     strerror_r
1598     sysconf
1599     sysctl
1600     usleep
1601     VirtualAlloc
1602 "
1603
1604 TOOLCHAIN_FEATURES="
1605     as_dn_directive
1606     as_func
1607     as_object_arch
1608     asm_mod_q
1609     attribute_may_alias
1610     attribute_packed
1611     ebp_available
1612     ebx_available
1613     gnu_as
1614     ibm_asm
1615     inline_asm_labels
1616     pragma_deprecated
1617     symver_asm_label
1618     symver_gnu_asm
1619     vfp_args
1620     xform_asm
1621     xmm_clobbers
1622 "
1623
1624 TYPES_LIST="
1625     CONDITION_VARIABLE_Ptr
1626     socklen_t
1627     struct_addrinfo
1628     struct_group_source_req
1629     struct_ip_mreq_source
1630     struct_ipv6_mreq
1631     struct_pollfd
1632     struct_rusage_ru_maxrss
1633     struct_sockaddr_in6
1634     struct_sockaddr_sa_len
1635     struct_sockaddr_storage
1636     struct_v4l2_frmivalenum_discrete
1637 "
1638
1639 HAVE_LIST="
1640     $ARCH_EXT_LIST
1641     $(add_suffix _external $ARCH_EXT_LIST)
1642     $(add_suffix _inline   $ARCH_EXT_LIST)
1643     $ARCH_FEATURES
1644     $ATOMICS_LIST
1645     $BUILTIN_LIST
1646     $HAVE_LIST_CMDLINE
1647     $HAVE_LIST_PUB
1648     $HEADERS_LIST
1649     $INTRINSICS_LIST
1650     $MATH_FUNCS
1651     $SYSTEM_FUNCS
1652     $THREADS_LIST
1653     $TOOLCHAIN_FEATURES
1654     $TYPES_LIST
1655     atomics_native
1656     dos_paths
1657     dxva2_lib
1658     libc_msvcrt
1659     libdc1394_1
1660     libdc1394_2
1661     sdl
1662     section_data_rel_ro
1663     threads
1664     vaapi_x11
1665     vdpau_x11
1666     xlib
1667 "
1668
1669 # options emitted with CONFIG_ prefix but not available on the command line
1670 CONFIG_EXTRA="
1671     aandcttables
1672     ac3dsp
1673     audio_frame_queue
1674     audiodsp
1675     blockdsp
1676     bswapdsp
1677     cabac
1678     dirac_parse
1679     dvprofile
1680     faandct
1681     faanidct
1682     fdctdsp
1683     flacdsp
1684     fmtconvert
1685     g722dsp
1686     gcrypt
1687     gmp
1688     golomb
1689     gplv3
1690     h263dsp
1691     h264chroma
1692     h264dsp
1693     h264pred
1694     h264qpel
1695     hpeldsp
1696     huffman
1697     huffyuvdsp
1698     huffyuvencdsp
1699     idctdsp
1700     iirfilter
1701     imdct15
1702     intrax8
1703     ividsp
1704     jpegtables
1705     libx262
1706     lgplv3
1707     lpc
1708     lzf
1709     me_cmp
1710     mpeg_er
1711     mpegaudio
1712     mpegaudiodsp
1713     mpegvideo
1714     mpegvideoenc
1715     mss34dsp
1716     pixblockdsp
1717     qpeldsp
1718     qsv
1719     qsvdec
1720     qsvenc
1721     rangecoder
1722     riffdec
1723     riffenc
1724     rtpdec
1725     rtpenc_chain
1726     rv34dsp
1727     sinewin
1728     snappy
1729     startcode
1730     texturedsp
1731     texturedspenc
1732     tpeldsp
1733     videodsp
1734     vp3dsp
1735     vp56dsp
1736     vp8dsp
1737     wma_freqs
1738     wmv2dsp
1739 "
1740
1741 CMDLINE_SELECT="
1742     $ARCH_EXT_LIST
1743     $CONFIG_LIST
1744     $HAVE_LIST_CMDLINE
1745     $THREADS_LIST
1746     asm
1747     cross_compile
1748     debug
1749     extra_warnings
1750     logging
1751     lto
1752     optimizations
1753     rpath
1754 "
1755
1756 PATHS_LIST="
1757     bindir
1758     datadir
1759     docdir
1760     incdir
1761     libdir
1762     mandir
1763     prefix
1764     shlibdir
1765 "
1766
1767 CMDLINE_SET="
1768     $PATHS_LIST
1769     ar
1770     arch
1771     as
1772     build_suffix
1773     cc
1774     objcc
1775     cpu
1776     cross_prefix
1777     custom_allocator
1778     dep_cc
1779     env
1780     extra_version
1781     host_cc
1782     host_cflags
1783     host_ld
1784     host_ldflags
1785     host_libs
1786     host_os
1787     ld
1788     logfile
1789     malloc_prefix
1790     nm
1791     optflags
1792     pkg_config
1793     pkg_config_flags
1794     random_seed
1795     samples
1796     sysinclude
1797     sysroot
1798     target_exec
1799     target_os
1800     target_path
1801     target_samples
1802     toolchain
1803 "
1804
1805 CMDLINE_APPEND="
1806     extra_cflags
1807     extra_objcflags
1808     host_cppflags
1809 "
1810
1811 # code dependency declarations
1812
1813 # architecture extensions
1814
1815 armv5te_deps="arm"
1816 armv6_deps="arm"
1817 armv6t2_deps="arm"
1818 armv8_deps="aarch64"
1819 neon_deps_any="aarch64 arm"
1820 intrinsics_neon_deps="neon"
1821 vfp_deps_any="aarch64 arm"
1822 vfpv3_deps="vfp"
1823
1824 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1825
1826 altivec_deps="ppc"
1827 ppc4xx_deps="ppc"
1828 vsx_deps="altivec"
1829 power8_deps="vsx"
1830
1831 cpunop_deps="i686"
1832 x86_64_select="i686"
1833 x86_64_suggest="fast_cmov"
1834
1835 amd3dnow_deps="mmx"
1836 amd3dnowext_deps="amd3dnow"
1837 i686_deps="x86"
1838 mmx_deps="x86"
1839 mmxext_deps="mmx"
1840 sse_deps="mmxext"
1841 sse2_deps="sse"
1842 sse3_deps="sse2"
1843 ssse3_deps="sse3"
1844 sse4_deps="ssse3"
1845 sse42_deps="sse4"
1846 avx_deps="sse42"
1847 xop_deps="avx"
1848 fma3_deps="avx"
1849 fma4_deps="avx"
1850 avx2_deps="avx"
1851
1852 mmx_external_deps="yasm"
1853 mmx_inline_deps="inline_asm"
1854 mmx_suggest="mmx_external mmx_inline"
1855
1856 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1857     eval dep=\$${ext}_deps
1858     eval ${ext}_external_deps='"${dep}_external"'
1859     eval ${ext}_inline_deps='"${dep}_inline"'
1860     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1861 done
1862
1863 aligned_stack_if_any="aarch64 ppc x86"
1864 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1865 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1866 fast_unaligned_if_any="aarch64 ppc x86"
1867 simd_align_16_if_any="altivec neon sse"
1868
1869 # system capabilities
1870 symver_if_any="symver_asm_label symver_gnu_asm"
1871 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1872
1873 # threading support
1874 atomics_gcc_if="sync_val_compare_and_swap"
1875 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1876 atomics_win32_if="MemoryBarrier"
1877 atomics_native_if_any="$ATOMICS_LIST"
1878 w32threads_deps="atomics_native"
1879 threads_if_any="$THREADS_LIST"
1880
1881 # subsystems
1882 dct_select="rdft"
1883 dirac_parse_select="golomb"
1884 error_resilience_select="me_cmp"
1885 faandct_deps="faan fdctdsp"
1886 faanidct_deps="faan idctdsp"
1887 intrax8_select="error_resilience"
1888 mdct_select="fft"
1889 rdft_select="fft"
1890 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1891 mpeg_er_select="error_resilience"
1892 mpegaudio_select="mpegaudiodsp"
1893 mpegaudiodsp_select="dct"
1894 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp videodsp"
1895 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1896 nvenc_deps_any="dlopen LoadLibrary"
1897 nvenc_extralibs='$ldl'
1898 qsvdec_select="qsv"
1899 qsvenc_select="qsv"
1900
1901 # decoders / encoders
1902 aac_decoder_select="imdct15 mdct sinewin"
1903 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1904 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1905 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1906 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1907 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1908 adpcm_g722_decoder_select="g722dsp"
1909 adpcm_g722_encoder_select="g722dsp"
1910 aic_decoder_select="golomb idctdsp"
1911 alac_encoder_select="lpc"
1912 als_decoder_select="bswapdsp"
1913 amrnb_decoder_select="lsp"
1914 amrwb_decoder_select="lsp"
1915 amv_decoder_select="sp5x_decoder"
1916 ape_decoder_select="bswapdsp"
1917 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1918 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1919 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1920 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1921 atrac1_decoder_select="mdct sinewin"
1922 atrac3_decoder_select="mdct"
1923 atrac3p_decoder_select="mdct sinewin"
1924 bink_decoder_select="blockdsp hpeldsp"
1925 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1926 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1927 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1928 cllc_decoder_select="bswapdsp"
1929 comfortnoise_encoder_select="lpc"
1930 cook_decoder_select="audiodsp mdct sinewin"
1931 cscd_decoder_select="lzo"
1932 cscd_decoder_suggest="zlib"
1933 dca_decoder_select="fmtconvert mdct"
1934 dds_decoder_select="texturedsp"
1935 dnxhd_decoder_select="blockdsp idctdsp"
1936 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1937 dvvideo_decoder_select="dvprofile idctdsp"
1938 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1939 dxa_decoder_deps="zlib"
1940 dxv_decoder_select="lzf texturedsp"
1941 eac3_decoder_select="ac3_decoder"
1942 eac3_encoder_select="ac3_encoder"
1943 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1944 eatgq_decoder_select="aandcttables idctdsp"
1945 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
1946 exr_decoder_deps="zlib"
1947 ffv1_decoder_select="golomb rangecoder"
1948 ffv1_encoder_select="rangecoder"
1949 ffvhuff_decoder_select="huffyuv_decoder"
1950 ffvhuff_encoder_select="huffyuv_encoder"
1951 fic_decoder_select="golomb"
1952 flac_decoder_select="flacdsp golomb"
1953 flac_encoder_select="bswapdsp flacdsp golomb lpc"
1954 flashsv_decoder_deps="zlib"
1955 flashsv_encoder_deps="zlib"
1956 flashsv2_decoder_deps="zlib"
1957 flv_decoder_select="h263_decoder"
1958 flv_encoder_select="h263_encoder"
1959 fourxm_decoder_select="blockdsp bswapdsp"
1960 fraps_decoder_select="bswapdsp huffman"
1961 g2m_decoder_deps="zlib"
1962 g2m_decoder_select="blockdsp idctdsp jpegtables"
1963 h261_decoder_select="mpeg_er mpegvideo"
1964 h261_encoder_select="aandcttables mpegvideoenc"
1965 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1966 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1967 h263i_decoder_select="h263_decoder"
1968 h263p_encoder_select="h263_encoder"
1969 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
1970 h264_decoder_suggest="error_resilience"
1971 h264_nvenc_encoder_deps="nvenc"
1972 h264_qsv_decoder_deps="libmfx"
1973 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
1974 h264_qsv_encoder_deps="libmfx"
1975 h264_qsv_encoder_select="qsvenc"
1976 hap_decoder_select="snappy texturedsp"
1977 hap_encoder_deps="libsnappy"
1978 hap_encoder_select="texturedspenc"
1979 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1980 hevc_nvenc_encoder_deps="nvenc"
1981 hevc_qsv_encoder_deps="libmfx"
1982 hevc_qsv_decoder_deps="libmfx"
1983 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
1984 hevc_qsv_encoder_select="qsvenc"
1985 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1986 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1987 iac_decoder_select="imc_decoder"
1988 imc_decoder_select="bswapdsp fft mdct sinewin"
1989 indeo3_decoder_select="hpeldsp"
1990 indeo4_decoder_select="ividsp"
1991 indeo5_decoder_select="ividsp"
1992 interplay_video_decoder_select="hpeldsp"
1993 jpegls_decoder_select="golomb mjpeg_decoder"
1994 jpegls_encoder_select="golomb"
1995 jv_decoder_select="blockdsp"
1996 lagarith_decoder_select="huffyuvdsp"
1997 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
1998 loco_decoder_select="golomb"
1999 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2000 metasound_decoder_select="lsp mdct sinewin"
2001 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2002 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2003 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2004 mjpegb_decoder_select="mjpeg_decoder"
2005 mlp_decoder_select="mlp_parser"
2006 motionpixels_decoder_select="bswapdsp"
2007 mp1_decoder_select="mpegaudio"
2008 mp1float_decoder_select="mpegaudio"
2009 mp2_decoder_select="mpegaudio"
2010 mp2float_decoder_select="mpegaudio"
2011 mp3_decoder_select="mpegaudio"
2012 mp3adu_decoder_select="mpegaudio"
2013 mp3adufloat_decoder_select="mpegaudio"
2014 mp3float_decoder_select="mpegaudio"
2015 mp3on4_decoder_select="mpegaudio"
2016 mp3on4float_decoder_select="mpegaudio"
2017 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2018 mpc8_decoder_select="mpegaudiodsp"
2019 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2020 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2021 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2022 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2023 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2024 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2025 mpeg2_qsv_decoder_deps="libmfx"
2026 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2027 mpeg2_qsv_encoder_deps="libmfx"
2028 mpeg2_qsv_encoder_select="qsvenc"
2029 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2030 mpeg4_encoder_select="h263_encoder"
2031 msa1_decoder_select="mss34dsp"
2032 msmpeg4v1_decoder_select="h263_decoder"
2033 msmpeg4v2_decoder_select="h263_decoder"
2034 msmpeg4v2_encoder_select="h263_encoder"
2035 msmpeg4v3_decoder_select="h263_decoder"
2036 msmpeg4v3_encoder_select="h263_encoder"
2037 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2038 mts2_decoder_select="mss34dsp"
2039 mxpeg_decoder_select="mjpeg_decoder"
2040 nellymoser_decoder_select="mdct sinewin"
2041 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2042 nuv_decoder_select="idctdsp lzo"
2043 nvenc_h264_encoder_deps="nvenc"
2044 nvenc_hevc_encoder_deps="nvenc"
2045 on2avc_decoder_select="mdct"
2046 opus_decoder_deps="avresample"
2047 opus_decoder_select="imdct15"
2048 png_decoder_deps="zlib"
2049 png_encoder_deps="zlib"
2050 png_encoder_select="huffyuvencdsp"
2051 prores_decoder_select="idctdsp"
2052 prores_encoder_select="fdctdsp"
2053 qcelp_decoder_select="lsp"
2054 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2055 ra_144_encoder_select="audio_frame_queue lpc"
2056 ralf_decoder_select="golomb"
2057 rscc_decoder_deps="zlib"
2058 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2059 rv10_encoder_select="h263_encoder"
2060 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2061 rv20_encoder_select="h263_encoder"
2062 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2063 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2064 screenpresso_decoder_deps="zlib"
2065 shorten_decoder_select="golomb"
2066 sipr_decoder_select="lsp"
2067 sp5x_decoder_select="mjpeg_decoder"
2068 svq1_decoder_select="hpeldsp"
2069 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2070 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2071 svq3_decoder_suggest="zlib"
2072 tak_decoder_select="audiodsp"
2073 tdsc_decoder_deps="zlib"
2074 tdsc_decoder_select="mjpeg_decoder"
2075 theora_decoder_select="vp3_decoder"
2076 thp_decoder_select="mjpeg_decoder"
2077 tiff_decoder_suggest="zlib"
2078 tiff_encoder_suggest="zlib"
2079 truehd_decoder_select="mlp_decoder"
2080 truemotion2_decoder_select="bswapdsp"
2081 truespeech_decoder_select="bswapdsp"
2082 tscc_decoder_deps="zlib"
2083 txd_decoder_select="texturedsp"
2084 twinvq_decoder_select="mdct lsp sinewin"
2085 utvideo_decoder_select="bswapdsp"
2086 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2087 vble_decoder_select="huffyuvdsp"
2088 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
2089 vc1image_decoder_select="vc1_decoder"
2090 vorbis_decoder_select="mdct"
2091 vorbis_encoder_select="mdct"
2092 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2093 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2094 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2095 vp6a_decoder_select="vp6_decoder"
2096 vp6f_decoder_select="vp6_decoder"
2097 vp7_decoder_select="h264pred videodsp vp8dsp"
2098 vp8_decoder_select="h264pred videodsp vp8dsp"
2099 vp9_decoder_select="videodsp"
2100 webp_decoder_select="vp8_decoder"
2101 wmapro_decoder_select="mdct sinewin wma_freqs"
2102 wmav1_decoder_select="mdct sinewin wma_freqs"
2103 wmav1_encoder_select="mdct sinewin wma_freqs"
2104 wmav2_decoder_select="mdct sinewin wma_freqs"
2105 wmav2_encoder_select="mdct sinewin wma_freqs"
2106 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2107 wmv1_decoder_select="h263_decoder"
2108 wmv1_encoder_select="h263_encoder"
2109 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2110 wmv2_encoder_select="h263_encoder wmv2dsp"
2111 wmv3_decoder_select="vc1_decoder"
2112 wmv3image_decoder_select="wmv3_decoder"
2113 zerocodec_decoder_deps="zlib"
2114 zlib_decoder_deps="zlib"
2115 zlib_encoder_deps="zlib"
2116 zmbv_decoder_deps="zlib"
2117 zmbv_encoder_deps="zlib"
2118
2119 # hardware accelerators
2120 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2121 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2122 vaapi_deps="va_va_h"
2123 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2124 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2125 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2126
2127 h263_vaapi_hwaccel_deps="vaapi"
2128 h263_vaapi_hwaccel_select="h263_decoder"
2129 h264_d3d11va_hwaccel_deps="d3d11va"
2130 h264_d3d11va_hwaccel_select="h264_decoder"
2131 h264_dxva2_hwaccel_deps="dxva2"
2132 h264_dxva2_hwaccel_select="h264_decoder"
2133 h264_mmal_decoder_deps="mmal"
2134 h264_mmal_hwaccel_deps="mmal"
2135 h264_mmal_decoder_select="h264_decoder"
2136 h264_mmal_encoder_deps="mmal"
2137 h264_qsv_hwaccel_deps="libmfx"
2138 h264_vaapi_hwaccel_deps="vaapi"
2139 h264_vaapi_hwaccel_select="h264_decoder"
2140 h264_vda_hwaccel_deps="vda"
2141 h264_vda_hwaccel_select="h264_decoder"
2142 h264_vda_old_hwaccel_deps="vda"
2143 h264_vda_old_hwaccel_select="h264_decoder"
2144 h264_vdpau_hwaccel_deps="vdpau"
2145 h264_vdpau_hwaccel_select="h264_decoder"
2146 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2147 hevc_d3d11va_hwaccel_select="hevc_decoder"
2148 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2149 hevc_dxva2_hwaccel_select="hevc_decoder"
2150 hevc_qsv_hwaccel_deps="libmfx"
2151 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2152 hevc_vdpau_hwaccep_select="hevc_decoder"
2153 mpeg1_vdpau_hwaccel_deps="vdpau"
2154 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2155 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2156 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2157 mpeg2_dxva2_hwaccel_deps="dxva2"
2158 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2159 mpeg2_qsv_hwaccel_deps="libmfx"
2160 mpeg2_vaapi_hwaccel_deps="vaapi"
2161 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2162 mpeg2_vdpau_hwaccel_deps="vdpau"
2163 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2164 mpeg4_vaapi_hwaccel_deps="vaapi"
2165 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2166 mpeg4_vdpau_hwaccel_deps="vdpau"
2167 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2168 vc1_d3d11va_hwaccel_deps="d3d11va"
2169 vc1_d3d11va_hwaccel_select="vc1_decoder"
2170 vc1_dxva2_hwaccel_deps="dxva2"
2171 vc1_dxva2_hwaccel_select="vc1_decoder"
2172 vc1_vaapi_hwaccel_deps="vaapi"
2173 vc1_vaapi_hwaccel_select="vc1_decoder"
2174 vc1_vdpau_hwaccel_deps="vdpau"
2175 vc1_vdpau_hwaccel_select="vc1_decoder"
2176 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2177 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2178 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2179 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2180
2181 # parsers
2182 h264_parser_select="h264_decoder"
2183 hevc_parser_select="golomb"
2184 mpegvideo_parser_select="mpegvideo"
2185 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2186 vc1_parser_select="mpegvideo startcode vc1_decoder"
2187
2188 # bitstream_filters
2189 mjpeg2jpeg_bsf_select="jpegtables"
2190
2191 # external libraries
2192 libdcadec_decoder_deps="libdcadec"
2193 libfaac_encoder_deps="libfaac"
2194 libfaac_encoder_select="audio_frame_queue"
2195 libfdk_aac_decoder_deps="libfdk_aac"
2196 libfdk_aac_encoder_deps="libfdk_aac"
2197 libfdk_aac_encoder_select="audio_frame_queue"
2198 libgsm_decoder_deps="libgsm"
2199 libgsm_encoder_deps="libgsm"
2200 libgsm_ms_decoder_deps="libgsm"
2201 libgsm_ms_encoder_deps="libgsm"
2202 libilbc_decoder_deps="libilbc"
2203 libilbc_encoder_deps="libilbc"
2204 libkvazaar_encoder_deps="libkvazaar"
2205 libmp3lame_encoder_deps="libmp3lame"
2206 libmp3lame_encoder_select="audio_frame_queue"
2207 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2208 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2209 libopencore_amrnb_encoder_select="audio_frame_queue"
2210 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2211 libopenh264_encoder_deps="libopenh264"
2212 libopenjpeg_decoder_deps="libopenjpeg"
2213 libopenjpeg_encoder_deps="libopenjpeg"
2214 libopus_decoder_deps="libopus"
2215 libopus_encoder_deps="libopus"
2216 libopus_encoder_select="audio_frame_queue"
2217 libschroedinger_decoder_deps="libschroedinger"
2218 libschroedinger_encoder_deps="libschroedinger"
2219 libspeex_decoder_deps="libspeex"
2220 libspeex_encoder_deps="libspeex"
2221 libspeex_encoder_select="audio_frame_queue"
2222 libtheora_encoder_deps="libtheora"
2223 libtwolame_encoder_deps="libtwolame"
2224 libvo_aacenc_encoder_deps="libvo_aacenc"
2225 libvo_aacenc_encoder_select="audio_frame_queue"
2226 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2227 libvorbis_encoder_deps="libvorbis"
2228 libvorbis_encoder_select="audio_frame_queue"
2229 libvpx_vp8_decoder_deps="libvpx"
2230 libvpx_vp8_encoder_deps="libvpx"
2231 libvpx_vp9_decoder_deps="libvpx"
2232 libvpx_vp9_encoder_deps="libvpx"
2233 libwavpack_encoder_deps="libwavpack"
2234 libwebp_encoder_deps="libwebp"
2235 libx262_encoder_deps="libx262"
2236 libx264_encoder_deps="libx264"
2237 libx265_encoder_deps="libx265"
2238 libxavs_encoder_deps="libxavs"
2239 libxvid_encoder_deps="libxvid"
2240
2241 # demuxers / muxers
2242 ac3_demuxer_select="ac3_parser"
2243 asf_demuxer_select="riffdec"
2244 asf_muxer_select="riffenc"
2245 asf_stream_muxer_select="asf_muxer"
2246 avi_demuxer_select="riffdec"
2247 avi_muxer_select="riffenc"
2248 avisynth_demuxer_deps="avisynth"
2249 avisynth_demuxer_select="riffdec"
2250 caf_demuxer_select="riffdec"
2251 dash_muxer_select="mp4_muxer"
2252 dirac_demuxer_select="dirac_parser"
2253 dv_demuxer_select="dvprofile"
2254 dv_muxer_select="dvprofile"
2255 dxa_demuxer_select="riffdec"
2256 eac3_demuxer_select="ac3_parser"
2257 f4v_muxer_select="mov_muxer"
2258 flac_demuxer_select="flac_parser"
2259 hds_muxer_select="flv_muxer"
2260 hls_muxer_select="mpegts_muxer"
2261 ipod_muxer_select="mov_muxer"
2262 ismv_muxer_select="mov_muxer"
2263 matroska_audio_muxer_select="matroska_muxer"
2264 matroska_demuxer_select="riffdec"
2265 matroska_demuxer_suggest="bzlib lzo zlib"
2266 matroska_muxer_select="riffenc"
2267 mmf_muxer_select="riffenc"
2268 mov_demuxer_select="riffdec"
2269 mov_demuxer_suggest="zlib"
2270 mov_muxer_select="riffenc rtpenc_chain"
2271 mp3_demuxer_select="mpegaudio_parser"
2272 mp4_muxer_select="mov_muxer"
2273 mpegts_muxer_select="adts_muxer latm_muxer"
2274 mpegtsraw_demuxer_select="mpegts_demuxer"
2275 mxf_d10_muxer_select="mxf_muxer"
2276 nut_muxer_select="riffenc"
2277 nuv_demuxer_select="riffdec"
2278 oga_muxer_select="ogg_muxer"
2279 ogg_demuxer_select="dirac_parse"
2280 opus_muxer_select="ogg_muxer"
2281 psp_muxer_select="mov_muxer"
2282 rtp_demuxer_select="sdp_demuxer"
2283 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2284 rtsp_demuxer_select="http_protocol rtpdec"
2285 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2286 sap_demuxer_select="sdp_demuxer"
2287 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2288 sdp_demuxer_select="rtpdec"
2289 smoothstreaming_muxer_select="ismv_muxer"
2290 spdif_muxer_select="aac_parser"
2291 spx_muxer_select="ogg_muxer"
2292 swf_demuxer_suggest="zlib"
2293 tak_demuxer_select="tak_parser"
2294 tg2_muxer_select="mov_muxer"
2295 tgp_muxer_select="mov_muxer"
2296 w64_demuxer_select="wav_demuxer"
2297 wav_demuxer_select="riffdec"
2298 wav_muxer_select="riffenc"
2299 webm_muxer_select="riffenc"
2300 webm_muxer_suggest="libopus_encoder libvorbis_encoder libvpx_vp8_encoder libvpx_vp9_encoder"
2301 wtv_demuxer_select="riffdec"
2302 xmv_demuxer_select="riffdec"
2303 xwma_demuxer_select="riffdec"
2304
2305 # indevs / outdevs
2306 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2307 alsa_outdev_deps="alsa_asoundlib_h"
2308 avfoundation_indev_deps="AVFoundation_AVFoundation_h"
2309 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2310 dv1394_indev_deps="dv1394"
2311 dv1394_indev_select="dv_demuxer"
2312 fbdev_indev_deps="linux_fb_h"
2313 jack_indev_deps="jack_jack_h pthreads"
2314 libcdio_indev_deps="libcdio"
2315 libdc1394_indev_deps="libdc1394"
2316 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2317 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2318 pulse_indev_deps="libpulse"
2319 sndio_indev_deps="sndio_h"
2320 sndio_outdev_deps="sndio_h"
2321 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2322 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2323 vfwcap_indev_extralibs="-lavicap32"
2324 x11grab_indev_deps="x11grab"
2325 x11grab_xcb_indev_deps="libxcb"
2326
2327 # protocols
2328 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2329 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2330 ffrtmpcrypt_protocol_select="tcp_protocol"
2331 ffrtmphttp_protocol_deps="!librtmp_protocol"
2332 ffrtmphttp_protocol_select="http_protocol"
2333 gopher_protocol_select="network"
2334 http_protocol_select="tcp_protocol"
2335 httpproxy_protocol_select="tcp_protocol"
2336 https_protocol_select="tls_protocol"
2337 icecast_protocol_select="http_protocol"
2338 librtmp_protocol_deps="librtmp"
2339 librtmpe_protocol_deps="librtmp"
2340 librtmps_protocol_deps="librtmp"
2341 librtmpt_protocol_deps="librtmp"
2342 librtmpte_protocol_deps="librtmp"
2343 mmsh_protocol_select="http_protocol"
2344 mmst_protocol_select="network"
2345 rtmp_protocol_deps="!librtmp_protocol"
2346 rtmp_protocol_select="tcp_protocol"
2347 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2348 rtmps_protocol_deps="!librtmp_protocol"
2349 rtmps_protocol_select="tls_protocol"
2350 rtmpt_protocol_select="ffrtmphttp_protocol"
2351 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2352 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2353 rtp_protocol_select="udp_protocol"
2354 sctp_protocol_deps="struct_sctp_event_subscribe"
2355 sctp_protocol_select="network"
2356 srtp_protocol_select="rtp_protocol"
2357 tcp_protocol_select="network"
2358 tls_gnutls_protocol_deps="gnutls"
2359 tls_gnutls_protocol_select="tcp_protocol"
2360 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2361 tls_openssl_protocol_select="tcp_protocol"
2362 tls_protocol_select_any="tls_gnutls_protocol tls_openssl_protocol"
2363 udp_protocol_select="network"
2364 unix_protocol_deps="sys_un_h"
2365 unix_protocol_select="network"
2366
2367 # filters
2368 blackframe_filter_deps="gpl"
2369 boxblur_filter_deps="gpl"
2370 bs2b_filter_deps="libbs2b"
2371 cropdetect_filter_deps="gpl"
2372 delogo_filter_deps="gpl"
2373 drawtext_filter_deps="libfreetype"
2374 frei0r_filter_deps="frei0r dlopen"
2375 frei0r_filter_extralibs='$ldl'
2376 frei0r_src_filter_deps="frei0r dlopen"
2377 frei0r_src_filter_extralibs='$ldl'
2378 hqdn3d_filter_deps="gpl"
2379 interlace_filter_deps="gpl"
2380 ocv_filter_deps="libopencv"
2381 resample_filter_deps="avresample"
2382 scale_filter_deps="swscale"
2383
2384 # examples
2385 avcodec_example_deps="avcodec avutil"
2386 filter_audio_example_deps="avfilter avutil"
2387 metadata_example_deps="avformat avutil"
2388 output_example_deps="avcodec avformat avutil swscale"
2389 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2390 transcode_aac_example_deps="avcodec avformat avresample"
2391
2392 # libraries, in linking order
2393 avcodec_deps="avutil"
2394 avdevice_deps="avformat avcodec avutil"
2395 avfilter_deps="avutil"
2396 avformat_deps="avcodec avutil"
2397 avresample_deps="avutil"
2398 swscale_deps="avutil"
2399
2400 # programs
2401 avconv_deps="avcodec avfilter avformat avresample swscale"
2402 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2403                fps_filter null_filter resample_filter scale_filter
2404                setpts_filter trim_filter"
2405 avplay_deps="avcodec avfilter avformat avresample sdl"
2406 avplay_libs='$sdl_libs'
2407 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2408 avprobe_deps="avcodec avformat"
2409
2410 # documentation
2411 pod2man_deps="doc"
2412 texi2html_deps="doc"
2413
2414 # default parameters
2415
2416 logfile="config.log"
2417
2418 # installation paths
2419 prefix_default="/usr/local"
2420 bindir_default='${prefix}/bin'
2421 datadir_default='${prefix}/share/avconv'
2422 docdir_default='${prefix}/share/doc/libav'
2423 incdir_default='${prefix}/include'
2424 libdir_default='${prefix}/lib'
2425 mandir_default='${prefix}/share/man'
2426 shlibdir_default="$libdir_default"
2427
2428 # toolchain
2429 ar_default="ar"
2430 cc_default="gcc"
2431 host_cc_default="gcc"
2432 cp_f="cp -f"
2433 ln_s="ln -s -f"
2434 nm_default="nm -g"
2435 objformat="elf"
2436 pkg_config_default=pkg-config
2437 ranlib="ranlib"
2438 strip="strip"
2439 yasmexe="yasm"
2440
2441 # machine
2442 arch_default=$(uname -m)
2443 cpu="generic"
2444 intrinsics="none"
2445
2446 # OS
2447 target_os_default=$(tolower $(uname -s))
2448 host_os=$target_os_default
2449
2450 # configurable options
2451 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2452
2453 enable asm
2454 enable debug
2455 enable doc
2456 enable faan faandct faanidct
2457 enable optimizations
2458 enable safe_bitstream_reader
2459 enable static
2460 enable swscale_alpha
2461 enable valgrind_backtrace
2462
2463 # By default, enable only those hwaccels that have no external dependencies.
2464 enable d3d11va dxva2 vda vdpau
2465
2466 # build settings
2467 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2468 LIBPREF="lib"
2469 LIBSUF=".a"
2470 FULLNAME='$(NAME)$(BUILDSUF)'
2471 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2472 SLIBPREF="lib"
2473 SLIBSUF=".so"
2474 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2475 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2476 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2477 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2478 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2479 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2480
2481 asflags_filter=echo
2482 cflags_filter=echo
2483 ldflags_filter=echo
2484
2485 AS_C='-c'
2486 AS_O='-o $@'
2487 CC_C='-c'
2488 CC_E='-E -o $@'
2489 CC_O='-o $@'
2490 OBJCC_C='-c'
2491 OBJCC_E='-E -o $@'
2492 OBJCC_O='-o $@'
2493 LD_O='-o $@'
2494 LD_LIB='-l%'
2495 LD_PATH='-L'
2496 HOSTCC_C='-c'
2497 HOSTCC_E='-E -o $@'
2498 HOSTCC_O='-o $@'
2499 HOSTLD_O='-o $@'
2500
2501 host_libs='-lm'
2502 host_cflags_filter=echo
2503 host_ldflags_filter=echo
2504
2505 target_path='$(CURDIR)'
2506
2507 # since the object filename is not given with the -MM flag, the compiler
2508 # is only able to print the basename, and we must add the path ourselves
2509 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2510 DEPFLAGS='-MM'
2511
2512 # find source path
2513 if test -f configure; then
2514     source_path=.
2515 else
2516     source_path=$(cd $(dirname "$0"); pwd)
2517     echo "$source_path" | grep -q '[[:blank:]]' &&
2518         die "Out of tree builds are impossible with whitespace in source path."
2519     test -e "$source_path/config.h" &&
2520         die "Out of tree builds are impossible with config.h in source dir."
2521 fi
2522
2523 for v in "$@"; do
2524     r=${v#*=}
2525     l=${v%"$r"}
2526     r=$(sh_quote "$r")
2527     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2528 done
2529
2530 find_things(){
2531     thing=$1
2532     pattern=$2
2533     file=$source_path/$3
2534     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2535 }
2536
2537 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2538 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2539 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2540 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2541 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2542 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2543 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2544 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2545 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2546 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2547 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2548
2549 ALL_COMPONENTS="
2550     $BSF_LIST
2551     $DECODER_LIST
2552     $DEMUXER_LIST
2553     $ENCODER_LIST
2554     $FILTER_LIST
2555     $HWACCEL_LIST
2556     $INDEV_LIST
2557     $MUXER_LIST
2558     $OUTDEV_LIST
2559     $PARSER_LIST
2560     $PROTOCOL_LIST
2561 "
2562
2563 enable $ARCH_EXT_LIST
2564
2565 die_unknown(){
2566     echo "Unknown option \"$1\"."
2567     echo "See $0 --help for available options."
2568     exit 1
2569 }
2570
2571 print_3_columns() {
2572     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2573 }
2574
2575 show_list() {
2576     suffix=_$1
2577     shift
2578     echo $* | sed s/$suffix//g | print_3_columns
2579     exit 0
2580 }
2581
2582 rand_list(){
2583     IFS=', '
2584     set -- $*
2585     unset IFS
2586     for thing; do
2587         comp=${thing%:*}
2588         prob=${thing#$comp}
2589         prob=${prob#:}
2590         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2591         echo "prob ${prob:-0.5}"
2592         printf '%s\n' $comp
2593     done
2594 }
2595
2596 do_random(){
2597     action=$1
2598     shift
2599     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2600     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2601 }
2602
2603 for opt do
2604     optval="${opt#*=}"
2605     case "$opt" in
2606         --extra-ldflags=*)
2607             add_ldflags $optval
2608         ;;
2609         --extra-ldexeflags=*)
2610             add_ldexeflags $optval
2611         ;;
2612         --extra-libs=*)
2613             add_extralibs $optval
2614         ;;
2615         --disable-devices)
2616             disable $INDEV_LIST $OUTDEV_LIST
2617         ;;
2618         --enable-debug=*)
2619             debuglevel="$optval"
2620         ;;
2621         --disable-programs)
2622             disable $PROGRAM_LIST
2623         ;;
2624         --disable-everything)
2625             map 'eval disable \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2626         ;;
2627         --disable-all)
2628             map 'eval disable \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2629             disable $LIBRARY_LIST $PROGRAM_LIST doc
2630         ;;
2631         --enable-random|--disable-random)
2632             action=${opt%%-random}
2633             do_random ${action#--} $COMPONENT_LIST
2634         ;;
2635         --enable-random=*|--disable-random=*)
2636             action=${opt%%-random=*}
2637             do_random ${action#--} $optval
2638         ;;
2639         --enable-*=*|--disable-*=*)
2640             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2641             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2642             eval list=\$$(toupper $thing)_LIST
2643             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2644             test $action = enable && action="request"
2645             $action $(filter "$name" $list)
2646         ;;
2647         --enable-avserver|--disable-avserver*)
2648             warn "avserver has been removed, the ${opt} option is only"\
2649                  "provided for compatibility and will be removed in the future"
2650         ;;
2651         --enable-?*|--disable-?*)
2652             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2653             if is_in $option $COMPONENT_LIST; then
2654                 eval $action \$$(toupper ${option%s})_LIST
2655             elif is_in $option $CMDLINE_SELECT; then
2656                 $action $option
2657             else
2658                 die_unknown $opt
2659             fi
2660         ;;
2661         --list-*)
2662             NAME="${opt#--list-}"
2663             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2664             NAME=${NAME%s}
2665             eval show_list $NAME \$$(toupper $NAME)_LIST
2666         ;;
2667         --help|-h) show_help
2668         ;;
2669         *)
2670             optname="${opt%%=*}"
2671             optname="${optname#--}"
2672             optname=$(echo "$optname" | sed 's/-/_/g')
2673             if is_in $optname $CMDLINE_SET; then
2674                 eval $optname='$optval'
2675             elif is_in $optname $CMDLINE_APPEND; then
2676                 append $optname "$optval"
2677             else
2678                 die_unknown $opt
2679             fi
2680         ;;
2681     esac
2682 done
2683
2684 for e in $env; do
2685     eval "export $e"
2686 done
2687
2688 disabled logging && logfile=/dev/null
2689
2690 # Disable all the library-specific components if the library itself
2691 # is disabled, see AVCODEC_LIST and following _LIST variables.
2692
2693 disable_components(){
2694     disabled ${1} && disable_weak $(
2695         eval components="\$$(toupper ${1})_COMPONENTS"
2696         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2697     )
2698 }
2699
2700 map 'disable_components $v' $LIBRARY_LIST
2701
2702 # Mark components that had not been enabled/disabled explicitly
2703 # as enabled
2704
2705 for n in $COMPONENT_LIST; do
2706     v=$(toupper ${n%s})_LIST
2707     eval enable_weak \$$v
2708     eval ${n}_if_any="\$$v"
2709 done
2710
2711 # Make so that disabled libraries are enabled if a component
2712 # of them is requested
2713
2714 for n in $LIBRARY_LIST; do
2715     v=$(toupper ${n})_COMPONENTS
2716     eval ${n}_if_any="\$$v"
2717 done
2718
2719 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2720 set >> $logfile
2721
2722 case "$toolchain" in
2723     *-asan)
2724         cc_default="${toolchain%-asan}"
2725         add_cflags  -fsanitize=address
2726         add_ldflags -fsanitize=address
2727     ;;
2728     *-tsan)
2729         cc_default="${toolchain%-tsan}"
2730         add_cflags  -fsanitize=thread -pie
2731         add_ldflags -fsanitize=thread -pie
2732         case "$toolchain" in
2733             gcc-tsan)
2734                 add_cflags  -fPIC
2735                 add_ldflags -fPIC
2736                 ;;
2737         esac
2738     ;;
2739     *-usan)
2740         cc_default="${toolchain%-usan}"
2741         add_cflags  -fsanitize=undefined
2742         add_ldflags -fsanitize=undefined
2743         case "$toolchain" in
2744             clang-usan)
2745                 add_cflags -O1
2746                 ;;
2747         esac
2748     ;;
2749     valgrind-*)
2750         target_exec_default="valgrind"
2751         case "$toolchain" in
2752             valgrind-massif)
2753                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2754                 ;;
2755             valgrind-memcheck)
2756                 target_exec_args="--track-origins=yes --leak-check=full"
2757                 ;;
2758         esac
2759     ;;
2760     msvc)
2761         # Check whether the current MSVC version needs the C99 converter.
2762         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2763         # support enough of C99 to build libav. Default to the new
2764         # behaviour if the regexp was unable to match anything, since this
2765         # successfully parses the version number of existing supported
2766         # versions that require the converter (MSVC 2010 and 2012).
2767         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2768         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2769             cc_default="cl"
2770         else
2771             cc_default="c99wrap cl"
2772         fi
2773         ld_default="$source_path/compat/windows/mslink"
2774         nm_default="dumpbin -symbols"
2775         ar_default="lib"
2776         case "$arch" in
2777         arm*)
2778             as_default="armasm"
2779             ;;
2780         esac
2781         target_os_default="win32"
2782         # Use a relative path for TMPDIR. This makes sure all the
2783         # ffconf temp files are written with a relative path, avoiding
2784         # issues with msys/win32 path conversion for MSVC parameters
2785         # such as -Fo<file> or -out:<file>.
2786         TMPDIR=.
2787     ;;
2788     icl)
2789         cc_default="icl"
2790         ld_default="xilink"
2791         nm_default="dumpbin -symbols"
2792         ar_default="xilib"
2793         target_os_default="win32"
2794         TMPDIR=.
2795     ;;
2796     gcov)
2797         add_cflags  -fprofile-arcs -ftest-coverage
2798         add_ldflags -fprofile-arcs -ftest-coverage
2799     ;;
2800     hardened)
2801         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2802         add_cflags   -fno-strict-overflow -fstack-protector-all
2803         add_ldflags  -Wl,-z,relro -Wl,-z,now
2804     ;;
2805     ?*)
2806         die "Unknown toolchain $toolchain"
2807     ;;
2808 esac
2809
2810 test -n "$cross_prefix" && enable cross_compile
2811
2812 if enabled cross_compile; then
2813     test -n "$arch" && test -n "$target_os" ||
2814         die "Must specify target arch and OS when cross-compiling"
2815 fi
2816
2817 ar_default="${cross_prefix}${ar_default}"
2818 cc_default="${cross_prefix}${cc_default}"
2819 occ_default="${cross_prefix}${occ_default}"
2820 nm_default="${cross_prefix}${nm_default}"
2821 pkg_config_default="${cross_prefix}${pkg_config_default}"
2822 ranlib="${cross_prefix}${ranlib}"
2823 strip="${cross_prefix}${strip}"
2824
2825 sysinclude_default="${sysroot}/usr/include"
2826
2827 set_default arch cc pkg_config sysinclude target_exec target_os
2828 enabled cross_compile || host_cc_default=$cc
2829 set_default host_cc
2830
2831 if ! $pkg_config --version >/dev/null 2>&1; then
2832     warn "$pkg_config not found, library detection may fail."
2833     pkg_config=false
2834 fi
2835
2836 exesuf() {
2837     case $1 in
2838         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2839     esac
2840 }
2841
2842 EXESUF=$(exesuf $target_os)
2843 HOSTEXESUF=$(exesuf $host_os)
2844
2845 # set temporary file name
2846 : ${TMPDIR:=$TEMPDIR}
2847 : ${TMPDIR:=$TMP}
2848 : ${TMPDIR:=/tmp}
2849
2850 if ! check_cmd mktemp -u XXXXXX; then
2851     # simple replacement for missing mktemp
2852     # NOT SAFE FOR GENERAL USE
2853     mktemp(){
2854         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2855     }
2856 fi
2857
2858 tmpfile(){
2859     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2860         (set -C; exec > $tmp) 2>/dev/null ||
2861         die "Unable to create temporary file in $TMPDIR."
2862     append TMPFILES $tmp
2863     eval $1=$tmp
2864 }
2865
2866 trap 'rm -f -- $TMPFILES' EXIT
2867
2868 tmpfile TMPASM .asm
2869 tmpfile TMPC   .c
2870 tmpfile TMPE   $EXESUF
2871 tmpfile TMPH   .h
2872 tmpfile TMPO   .o
2873 tmpfile TMPS   .S
2874 tmpfile TMPSH  .sh
2875 tmpfile TMPV   .ver
2876
2877 unset -f mktemp
2878
2879 chmod +x $TMPE
2880
2881 # make sure we can execute files in $TMPDIR
2882 cat > $TMPSH 2>> $logfile <<EOF
2883 #! /bin/sh
2884 EOF
2885 chmod +x $TMPSH >> $logfile 2>&1
2886 if ! $TMPSH >> $logfile 2>&1; then
2887     cat <<EOF
2888 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2889 variable to another directory and make sure that it is not mounted noexec.
2890 EOF
2891     die "Sanity test failed."
2892 fi
2893
2894 armasm_flags(){
2895     for flag; do
2896         case $flag in
2897             # Filter out MSVC cl.exe options from cflags that shouldn't
2898             # be passed to gas-preprocessor
2899             -M[TD]*)                                            ;;
2900             *)                  echo $flag                      ;;
2901         esac
2902    done
2903 }
2904
2905 ccc_flags(){
2906     for flag; do
2907         case $flag in
2908             -std=c99)           echo -c99                       ;;
2909             -mcpu=*)            echo -arch ${flag#*=}           ;;
2910             -mieee)             echo -ieee                      ;;
2911             -O*|-fast)          echo $flag                      ;;
2912             -fno-math-errno)    echo -assume nomath_errno       ;;
2913             -g)                 echo -g3                        ;;
2914             -Wall)              echo -msg_enable level2         ;;
2915             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2916             -Wl,*)              echo $flag                      ;;
2917             -f*|-W*)                                            ;;
2918             *)                  echo $flag                      ;;
2919         esac
2920    done
2921 }
2922
2923 cparser_flags(){
2924     for flag; do
2925         case $flag in
2926             -Wno-switch)             echo -Wno-switch-enum ;;
2927             -Wno-format-zero-length) ;;
2928             -Wdisabled-optimization) ;;
2929             -Wno-pointer-sign)       echo -Wno-other ;;
2930             *)                       echo $flag ;;
2931         esac
2932     done
2933 }
2934
2935 msvc_common_flags(){
2936     for flag; do
2937         case $flag in
2938             # In addition to specifying certain flags under the compiler
2939             # specific filters, they must be specified here as well or else the
2940             # generic catch all at the bottom will print the original flag.
2941             -Wall)                ;;
2942             -std=c99)             ;;
2943             # Common flags
2944             -fomit-frame-pointer) ;;
2945             -g)                   echo -Z7 ;;
2946             -fno-math-errno)      ;;
2947             -fno-common)          ;;
2948             -fno-signed-zeros)    ;;
2949             -fPIC)                ;;
2950             -mthumb)              ;;
2951             -march=*)             ;;
2952             -lz)                  echo zlib.lib ;;
2953             -lavifil32)           echo vfw32.lib ;;
2954             -lavicap32)           echo vfw32.lib user32.lib ;;
2955             -lx264)               echo libx264.lib ;;
2956             -l*)                  echo ${flag#-l}.lib ;;
2957             -L*)                  echo -libpath:${flag#-L} ;;
2958             *)                    echo $flag ;;
2959         esac
2960     done
2961 }
2962
2963 msvc_flags(){
2964     msvc_common_flags "$@"
2965     for flag; do
2966         case $flag in
2967             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2968                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2969                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2970                                        -wd4273 -wd4554 -wd4701 ;;
2971         esac
2972     done
2973 }
2974
2975 icl_flags(){
2976     msvc_common_flags "$@"
2977     for flag; do
2978         case $flag in
2979             # Despite what Intel's documentation says -Wall, which is supported
2980             # on Windows, does enable remarks so disable them here.
2981             -Wall)                echo $flag -Qdiag-disable:remark ;;
2982             -std=c99)             echo -Qstd=c99 ;;
2983         esac
2984     done
2985 }
2986
2987 pgi_flags(){
2988     for flag; do
2989         case $flag in
2990             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2991             -fomit-frame-pointer) echo -Mnoframe ;;
2992             -g)                   echo -gopt ;;
2993             *)                    echo $flag ;;
2994         esac
2995     done
2996 }
2997
2998 suncc_flags(){
2999     for flag; do
3000         case $flag in
3001             -march=*|-mcpu=*)
3002                 case "${flag#*=}" in
3003                     native)                   echo -xtarget=native       ;;
3004                     v9|niagara)               echo -xarch=sparc          ;;
3005                     ultrasparc)               echo -xarch=sparcvis       ;;
3006                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3007                     i586|pentium)             echo -xchip=pentium        ;;
3008                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3009                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3010                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3011                     pentium4*)          echo -xtarget=pentium4           ;;
3012                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3013                     *-sse3)             echo -xarch=sse3                 ;;
3014                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3015                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3016                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3017                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3018                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3019                     k8|opteron|athlon64|athlon-fx)
3020                                                echo -xarch=sse2a         ;;
3021                     athlon*)                   echo -xarch=pentium_proa  ;;
3022                 esac
3023                 ;;
3024             -std=c99)             echo -xc99              ;;
3025             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3026             -fPIC)                echo -KPIC -xcode=pic32 ;;
3027             -W*,*)                echo $flag              ;;
3028             -f*-*|-W*|-mimpure-text)                      ;;
3029             -shared)              echo -G                 ;;
3030             *)                    echo $flag              ;;
3031         esac
3032     done
3033 }
3034
3035 tms470_flags(){
3036     for flag; do
3037         case $flag in
3038             -march=*|-mcpu=*)
3039                 case "${flag#*=}" in
3040                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3041                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3042                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3043                     armv6*|arm11*)          echo -mv=6   ;;
3044                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3045                                             echo -mv=5e  ;;
3046                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3047                 esac
3048                 ;;
3049             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3050             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3051             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3052             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3053             -msoft-float)   echo --float_support=vfplib       ;;
3054             -O[0-3]|-mf=*)  echo $flag                        ;;
3055             -g)             echo -g -mn                       ;;
3056             -pds=*)         echo $flag                        ;;
3057             -D*|-I*)        echo $flag                        ;;
3058             --gcc|--abi=*)  echo $flag                        ;;
3059             -me)            echo $flag                        ;;
3060         esac
3061     done
3062 }
3063
3064 probe_cc(){
3065     pfx=$1
3066     _cc=$2
3067
3068     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3069     unset _ld_o _ldflags _ld_lib _ld_path
3070     unset _depflags _DEPCMD _DEPFLAGS
3071     _flags_filter=echo
3072
3073     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3074         _type=llvm_gcc
3075         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3076         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3077         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3078         _cflags_speed='-O3'
3079         _cflags_size='-Os'
3080     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3081         _type=gcc
3082         gcc_version=$($_cc --version | head -n1)
3083         gcc_basever=$($_cc -dumpversion)
3084         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3085         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3086         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3087         if ! $_cc -dumpversion | grep -q '^2\.'; then
3088             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3089         fi
3090         _cflags_speed='-O3'
3091         _cflags_size='-Os'
3092     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3093         _type=icc
3094         _ident=$($_cc --version | head -n1)
3095         _depflags='-MMD'
3096         _cflags_speed='-O3'
3097         _cflags_size='-Os'
3098         _cflags_noopt='-O1'
3099     elif $_cc -v 2>&1 | grep -q xlc; then
3100         _type=xlc
3101         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3102         _cflags_speed='-O5'
3103         _cflags_size='-O5 -qcompact'
3104     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3105         _type=ccc
3106         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3107         _DEPFLAGS='-M'
3108         _cflags_speed='-fast'
3109         _cflags_size='-O1'
3110         _flags_filter=ccc_flags
3111     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3112         test -d "$sysroot" || die "No valid sysroot specified."
3113         _type=armcc
3114         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3115         armcc_conf="$PWD/armcc.conf"
3116         $_cc --arm_linux_configure                 \
3117              --arm_linux_config_file="$armcc_conf" \
3118              --configure_sysroot="$sysroot"        \
3119              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3120              die "Error creating armcc configuration file."
3121         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3122         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3123         as_default="${cross_prefix}gcc"
3124         _depflags='-MMD'
3125         _cflags_speed='-O3'
3126         _cflags_size='-Os'
3127     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3128         _type=tms470
3129         _ident=$($_cc -version | head -n1 | tr -s ' ')
3130         _flags='--gcc --abi=eabi -me'
3131         _cc_e='-ppl -fe=$@'
3132         _cc_o='-fe=$@'
3133         _depflags='-ppa -ppd=$(@:.o=.d)'
3134         _cflags_speed='-O3 -mf=5'
3135         _cflags_size='-O3 -mf=2'
3136         _flags_filter=tms470_flags
3137     elif $_cc -v 2>&1 | grep -q clang; then
3138         _type=clang
3139         _ident=$($_cc --version 2>/dev/null | head -n1)
3140         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3141         _cflags_speed='-O3'
3142         _cflags_size='-Os'
3143     elif $_cc -V 2>&1 | grep -q Sun; then
3144         _type=suncc
3145         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3146         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3147         _DEPFLAGS='-xM1 -xc99'
3148         _ldflags='-std=c99'
3149         _cflags_speed='-O5'
3150         _cflags_size='-O5 -xspace'
3151         _flags_filter=suncc_flags
3152     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3153         _type=pathscale
3154         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3155         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3156         _cflags_speed='-O2'
3157         _cflags_size='-Os'
3158         _flags_filter='filter_out -Wdisabled-optimization'
3159     elif $_cc -v 2>&1 | grep -q Open64; then
3160         _type=open64
3161         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3162         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3163         _cflags_speed='-O2'
3164         _cflags_size='-Os'
3165         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3166     elif $_cc -V 2>&1 | grep -q Portland; then
3167         _type=pgi
3168         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3169         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3170         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3171         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3172         _cflags_noopt="-O1"
3173         _flags_filter=pgi_flags
3174     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3175         _type=armasm
3176         _ident=$($_cc | head -n1)
3177         # 4509: "This form of conditional instruction is deprecated"
3178         _flags="-nologo -ignore 4509"
3179         _flags_filter=armasm_flags
3180     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3181         _type=msvc
3182         _ident=$($_cc 2>&1 | head -n1)
3183         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3184         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3185         _cflags_speed="-O2"
3186         _cflags_size="-O1"
3187         if $_cc -nologo- 2>&1 | grep -q Linker; then
3188             _ld_o='-out:$@'
3189         else
3190             _ld_o='-Fe$@'
3191         fi
3192         _cc_o='-Fo$@'
3193         _cc_e='-P -Fi$@'
3194         _flags_filter=msvc_flags
3195         _ld_lib='lib%.a'
3196         _ld_path='-libpath:'
3197         _flags='-nologo'
3198         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3199     elif $_cc 2>&1 | grep -q Intel; then
3200         _type=icl
3201         _ident=$($_cc 2>&1 | head -n1)
3202         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3203         # Not only is O3 broken on 13.x+ but it is slower on all previous
3204         # versions (tested) as well.
3205         _cflags_speed="-O2"
3206         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3207         if $_cc 2>&1 | grep -q Linker; then
3208             _ld_o='-out:$@'
3209         else
3210             _ld_o='-Fe$@'
3211         fi
3212         _cc_o='-Fo$@'
3213         _cc_e='-P'
3214         _flags_filter=icl_flags
3215         _ld_lib='lib%.a'
3216         _ld_path='-libpath:'
3217         # -Qdiag-error to make icl error when seeing certain unknown arguments
3218         _flags='-nologo -Qdiag-error:4044,10157'
3219         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3220         # with MSVC which enables it by default.
3221         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS'
3222     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3223         _type=cparser
3224         _ident=$($_cc --version | head -n1)
3225         _depflags='-MMD'
3226         _cflags_speed='-O4'
3227         _cflags_size='-O2'
3228         _flags_filter=cparser_flags
3229     fi
3230
3231     eval ${pfx}_type=\$_type
3232     eval ${pfx}_ident=\$_ident
3233 }
3234
3235 set_ccvars(){
3236     eval ${1}_C=\${_cc_c-\${${1}_C}}
3237     eval ${1}_E=\${_cc_e-\${${1}_E}}
3238     eval ${1}_O=\${_cc_o-\${${1}_O}}
3239
3240     if [ -n "$_depflags" ]; then
3241         eval ${1}_DEPFLAGS=\$_depflags
3242     else
3243         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3244         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3245         eval DEP${1}FLAGS=\$_flags
3246     fi
3247 }
3248
3249 probe_cc cc "$cc"
3250 cflags_filter=$_flags_filter
3251 cflags_speed=$_cflags_speed
3252 cflags_size=$_cflags_size
3253 cflags_noopt=$_cflags_noopt
3254 add_cflags $_flags $_cflags
3255 cc_ldflags=$_ldflags
3256 set_ccvars CC
3257
3258 probe_cc hostcc "$host_cc"
3259 host_cflags_filter=$_flags_filter
3260 add_host_cflags  $_flags $_cflags
3261 set_ccvars HOSTCC
3262
3263 test -n "$cc_type" && enable $cc_type ||
3264     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3265
3266 : ${as_default:=$cc}
3267 : ${objcc_default:=$cc}
3268 : ${dep_cc_default:=$cc}
3269 : ${ld_default:=$cc}
3270 : ${host_ld_default:=$host_cc}
3271 set_default ar as objcc dep_cc ld host_ld
3272
3273 probe_cc as "$as"
3274 asflags_filter=$_flags_filter
3275 add_asflags $_flags $_cflags
3276 set_ccvars AS
3277
3278 probe_cc objcc "$objcc"
3279 objcflags_filter=$_flags_filter
3280 add_objcflags $_flags $_cflags
3281 set_ccvars OBJC
3282
3283 probe_cc ld "$ld"
3284 ldflags_filter=$_flags_filter
3285 add_ldflags $_flags $_ldflags
3286 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3287 LD_O=${_ld_o-$LD_O}
3288 LD_LIB=${_ld_lib-$LD_LIB}
3289 LD_PATH=${_ld_path-$LD_PATH}
3290
3291 probe_cc hostld "$host_ld"
3292 host_ldflags_filter=$_flags_filter
3293 add_host_ldflags $_flags $_ldflags
3294 HOSTLD_O=${_ld_o-$HOSTLD_O}
3295
3296 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3297     probe_cc depcc "$dep_cc"
3298     CCDEP=${_DEPCMD:-$DEPCMD}
3299     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3300     DEPCCFLAGS=$_flags
3301 fi
3302
3303 if $ar 2>&1 | grep -q Microsoft; then
3304     arflags="-nologo"
3305     ar_o='-out:$@'
3306 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3307     arflags="rq"
3308     ar_o='$@'
3309 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3310     arflags='-Xany -r -c'
3311     ar_o='$@'
3312 else
3313     arflags="rc"
3314     ar_o='$@'
3315 fi
3316
3317 add_cflags $extra_cflags
3318 add_objcflags $extra_objcflags
3319 add_asflags $extra_cflags
3320
3321 if test -n "$sysroot"; then
3322     case "$cc_type" in
3323         gcc|llvm_gcc|clang)
3324             add_cppflags --sysroot="$sysroot"
3325             add_ldflags --sysroot="$sysroot"
3326         ;;
3327         tms470)
3328             add_cppflags -I"$sysinclude"
3329             add_ldflags  --sysroot="$sysroot"
3330         ;;
3331     esac
3332 fi
3333
3334 if test "$cpu" = host; then
3335     enabled cross_compile &&
3336         die "--cpu=host makes no sense when cross-compiling."
3337
3338     case "$cc_type" in
3339         gcc|llvm_gcc)
3340             check_native(){
3341                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3342                 sed -n "/cc1.*$1=/{
3343                             s/.*$1=\\([^ ]*\\).*/\\1/
3344                             p
3345                             q
3346                         }" $TMPE
3347             }
3348             cpu=$(check_native -march || check_native -mcpu)
3349         ;;
3350     esac
3351
3352     test "${cpu:-host}" = host &&
3353         die "--cpu=host not supported with compiler $cc"
3354 fi
3355
3356 # Deal with common $arch aliases
3357 case "$arch" in
3358     aarch64|arm64)
3359         arch="aarch64"
3360     ;;
3361     arm*)
3362         arch="arm"
3363     ;;
3364     mips*|IP*)
3365         case "$arch" in
3366         *el)
3367             add_cppflags -EL
3368             add_ldflags -EL
3369         ;;
3370         *eb)
3371             add_cppflags -EB
3372             add_ldflags -EB
3373         ;;
3374         esac
3375         arch="mips"
3376     ;;
3377     parisc*|hppa*)
3378         arch="parisc"
3379     ;;
3380     "Power Macintosh"|ppc*|powerpc*)
3381         arch="ppc"
3382     ;;
3383     s390|s390x)
3384         arch="s390"
3385     ;;
3386     sh4|sh)
3387         arch="sh4"
3388     ;;
3389     sun4u|sparc*)
3390         arch="sparc"
3391     ;;
3392     tilegx|tile-gx)
3393         arch="tilegx"
3394     ;;
3395     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3396         arch="x86"
3397     ;;
3398 esac
3399
3400 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3401 enable $arch
3402
3403 # Add processor-specific flags
3404 if enabled aarch64; then
3405
3406     case $cpu in
3407         armv*)
3408             cpuflags="-march=$cpu"
3409         ;;
3410         *)
3411             cpuflags="-mcpu=$cpu"
3412         ;;
3413     esac
3414
3415 elif enabled alpha; then
3416
3417     cpuflags="-mcpu=$cpu"
3418
3419 elif enabled arm; then
3420
3421     check_arm_arch() {
3422         check_cpp_condition stddef.h \
3423             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3424             $cpuflags
3425     }
3426
3427     probe_arm_arch() {
3428         if   check_arm_arch 4;        then echo armv4;
3429         elif check_arm_arch 4T;       then echo armv4t;
3430         elif check_arm_arch 5;        then echo armv5;
3431         elif check_arm_arch 5E;       then echo armv5e;
3432         elif check_arm_arch 5T;       then echo armv5t;
3433         elif check_arm_arch 5TE;      then echo armv5te;
3434         elif check_arm_arch 5TEJ;     then echo armv5te;
3435         elif check_arm_arch 6;        then echo armv6;
3436         elif check_arm_arch 6J;       then echo armv6j;
3437         elif check_arm_arch 6K;       then echo armv6k;
3438         elif check_arm_arch 6Z;       then echo armv6z;
3439         elif check_arm_arch 6ZK;      then echo armv6zk;
3440         elif check_arm_arch 6T2;      then echo armv6t2;
3441         elif check_arm_arch 7;        then echo armv7;
3442         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3443         elif check_arm_arch 7S;       then echo armv7-a;
3444         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3445         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3446         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3447         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3448         fi
3449     }
3450
3451     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3452
3453     case $cpu in
3454         armv*)
3455             cpuflags="-march=$cpu"
3456             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3457         ;;
3458         *)
3459             cpuflags="-mcpu=$cpu"
3460             case $cpu in
3461                 cortex-a*)                               subarch=armv7a  ;;
3462                 cortex-r*)                               subarch=armv7r  ;;
3463                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3464                 arm11*)                                  subarch=armv6   ;;
3465                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3466                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3467                 *)                             subarch=$(probe_arm_arch) ;;
3468             esac
3469         ;;
3470     esac
3471
3472     case "$subarch" in
3473         armv5t*)    enable fast_clz                ;;
3474         armv[6-8]*) enable fast_clz fast_unaligned ;;
3475     esac
3476
3477 elif enabled avr32; then
3478
3479     case $cpu in
3480         ap7[02]0[0-2])
3481             subarch="avr32_ap"
3482             cpuflags="-mpart=$cpu"
3483         ;;
3484         ap)
3485             subarch="avr32_ap"
3486             cpuflags="-march=$cpu"
3487         ;;
3488         uc3[ab]*)
3489             subarch="avr32_uc"
3490             cpuflags="-mcpu=$cpu"
3491         ;;
3492         uc)
3493             subarch="avr32_uc"
3494             cpuflags="-march=$cpu"
3495         ;;
3496     esac
3497
3498 elif enabled bfin; then
3499
3500     cpuflags="-mcpu=$cpu"
3501
3502 elif enabled mips; then
3503
3504     cpuflags="-march=$cpu"
3505
3506 elif enabled ppc; then
3507
3508     disable ldbrx
3509
3510     case $(tolower $cpu) in
3511         601|ppc601|powerpc601)
3512             cpuflags="-mcpu=601"
3513             disable altivec
3514         ;;
3515         603*|ppc603*|powerpc603*)
3516             cpuflags="-mcpu=603"
3517             disable altivec
3518         ;;
3519         604*|ppc604*|powerpc604*)
3520             cpuflags="-mcpu=604"
3521             disable altivec
3522         ;;
3523         g3|75*|ppc75*|powerpc75*)
3524             cpuflags="-mcpu=750"
3525             disable altivec
3526         ;;
3527         g4|745*|ppc745*|powerpc745*)
3528             cpuflags="-mcpu=7450"
3529             disable vsx
3530         ;;
3531         74*|ppc74*|powerpc74*)
3532             cpuflags="-mcpu=7400"
3533             disable vsx
3534         ;;
3535         g5|970|ppc970|powerpc970)
3536             cpuflags="-mcpu=970"
3537             disable vsx
3538         ;;
3539         power[3-6]*)
3540             cpuflags="-mcpu=$cpu"
3541             disable vsx
3542         ;;
3543         power[7-8]*)
3544             cpuflags="-mcpu=$cpu"
3545             enable ldbrx
3546         ;;
3547         cell)
3548             cpuflags="-mcpu=cell"
3549             enable ldbrx
3550             disable vsx
3551         ;;
3552         e500mc)
3553             cpuflags="-mcpu=e500mc"
3554             disable altivec
3555         ;;
3556         e500v2)
3557             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3558             disable altivec
3559             disable dcbzl
3560         ;;
3561         e500)
3562             cpuflags="-mcpu=8540 -mhard-float"
3563             disable altivec
3564             disable dcbzl
3565         ;;
3566     esac
3567
3568 elif enabled sparc; then
3569
3570     case $cpu in
3571         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3572             cpuflags="-mcpu=$cpu"
3573         ;;
3574         ultrasparc*|niagara[234])
3575             cpuflags="-mcpu=$cpu"
3576         ;;
3577     esac
3578
3579 elif enabled x86; then
3580
3581     case $cpu in
3582         i[345]86|pentium)
3583             cpuflags="-march=$cpu"
3584             disable i686
3585             disable mmx
3586         ;;
3587         # targets that do NOT support nopl and conditional mov (cmov)
3588         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3589             cpuflags="-march=$cpu"
3590             disable i686
3591         ;;
3592         # targets that do support nopl and conditional mov (cmov)
3593         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3594             cpuflags="-march=$cpu"
3595             enable i686
3596             enable fast_cmov
3597         ;;
3598         # targets that do support conditional mov but on which it's slow
3599         pentium4|pentium4m|prescott|nocona)
3600             cpuflags="-march=$cpu"
3601             enable i686
3602             disable fast_cmov
3603         ;;
3604     esac
3605
3606 fi
3607
3608 if [ "$cpu" != generic ]; then
3609     add_cflags  $cpuflags
3610     add_asflags $cpuflags
3611     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3612 fi
3613
3614 # compiler sanity check
3615 check_exec <<EOF
3616 int main(void){ return 0; }
3617 EOF
3618 if test "$?" != 0; then
3619     echo "$cc is unable to create an executable file."
3620     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3621         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3622         echo "Only do this if you know what cross compiling means."
3623     fi
3624     die "C compiler test failed."
3625 fi
3626
3627 add_cppflags -D_ISOC99_SOURCE
3628 check_cflags -std=c99
3629 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3630 #include <stdlib.h>
3631 EOF
3632 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3633 #include <stdlib.h>
3634 EOF
3635
3636 add_host_cppflags -D_ISOC99_SOURCE
3637 check_host_cflags -std=c99
3638 check_host_cflags -Wall
3639 check_host_cflags -O3
3640
3641 check_64bit(){
3642     arch32=$1
3643     arch64=$2
3644     expr=$3
3645     check_code cc "" "int test[2*($expr) - 1]" &&
3646         subarch=$arch64 || subarch=$arch32
3647 }
3648
3649 case "$arch" in
3650     aarch64|alpha|ia64)
3651         spic=$shared
3652     ;;
3653     mips)
3654         check_64bit mips mips64 '_MIPS_SIM > 1'
3655         spic=$shared
3656     ;;
3657     parisc)
3658         check_64bit parisc parisc64 'sizeof(void *) > 4'
3659         spic=$shared
3660     ;;
3661     ppc)
3662         check_64bit ppc ppc64 'sizeof(void *) > 4'
3663         spic=$shared
3664     ;;
3665     s390)
3666         check_64bit s390 s390x 'sizeof(void *) > 4'
3667         spic=$shared
3668     ;;
3669     sparc)
3670         check_64bit sparc sparc64 'sizeof(void *) > 4'
3671         spic=$shared
3672     ;;
3673     x86)
3674         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3675         if test "$subarch" = "x86_64"; then
3676             spic=$shared
3677         fi
3678     ;;
3679 esac
3680
3681 enable $subarch
3682 enabled spic && enable_weak pic
3683
3684 # OS specific
3685 case $target_os in
3686     aix)
3687         SHFLAGS=-shared
3688         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3689         enabled shared && add_ldflags -Wl,-brtl
3690         ;;
3691     android)
3692         disable symver
3693         enable section_data_rel_ro
3694         SLIB_INSTALL_NAME='$(SLIBNAME)'
3695         SLIB_INSTALL_LINKS=
3696         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3697         ;;
3698     haiku)
3699         prefix_default="/boot/common"
3700         network_extralibs="-lnetwork"
3701         host_libs=
3702         ;;
3703     sunos)
3704         SHFLAGS='-shared -Wl,-h,$$(@F)'
3705         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3706         network_extralibs="-lsocket -lnsl"
3707         # When using suncc to build, the Solaris linker will mark
3708         # an executable with each instruction set encountered by
3709         # the Solaris assembler.  As our libraries contain their own
3710         # guards for processor-specific code, instead suppress
3711         # generation of the HWCAPS ELF section on Solaris x86 only.
3712         enabled_all suncc x86 &&
3713             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3714             add_ldflags -Wl,-M,mapfile
3715         nm_default='nm -P -g'
3716         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
3717         ;;
3718     netbsd)
3719         disable symver
3720         oss_indev_extralibs="-lossaudio"
3721         oss_outdev_extralibs="-lossaudio"
3722         ;;
3723     openbsd|bitrig)
3724         disable symver
3725         SHFLAGS='-shared'
3726         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3727         SLIB_INSTALL_LINKS=
3728         oss_indev_extralibs="-lossaudio"
3729         oss_outdev_extralibs="-lossaudio"
3730         ;;
3731     dragonfly)
3732         disable symver
3733         ;;
3734     freebsd)
3735         ;;
3736     bsd/os)
3737         add_extralibs -lpoll -lgnugetopt
3738         ;;
3739     darwin)
3740         enabled ppc && add_asflags -force_cpusubtype_ALL
3741         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3742         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3743         add_ldflags -Wl,-dynamic,-search_paths_first
3744         SLIBSUF=".dylib"
3745         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3746         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3747         objformat="macho"
3748         enabled x86_64 && objformat="macho64"
3749         enabled_any pic shared ||
3750             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3751         ;;
3752     msys*)
3753         die "Native MSYS builds are discouraged, please use the MINGW environment.";
3754         ;;
3755     mingw32*|mingw64*)
3756         if test $target_os = "mingw32ce"; then
3757             disable network
3758         else
3759             target_os=mingw32
3760         fi
3761         LIBTARGET=i386
3762         if enabled x86_64; then
3763             LIBTARGET="i386:x86-64"
3764         elif enabled arm; then
3765             LIBTARGET=arm-wince
3766         fi
3767         check_ldflags -Wl,--nxcompat
3768         check_ldflags -Wl,--dynamicbase
3769         shlibdir_default="$bindir_default"
3770         SLIBPREF=""
3771         SLIBSUF=".dll"
3772         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3773         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3774         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3775         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3776         SLIB_INSTALL_LINKS=
3777         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3778         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3779         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3780         objformat="win32"
3781         dlltool="${cross_prefix}dlltool"
3782         ranlib=:
3783         enable dos_paths
3784         ;;
3785     win32|win64)
3786         disable symver
3787         if enabled shared; then
3788             # Link to the import library instead of the normal static library
3789             # for shared libs.
3790             LD_LIB='%.lib'
3791             # Cannot build both shared and static libs with MSVC or icl.
3792             disable static
3793         fi
3794         shlibdir_default="$bindir_default"
3795         SLIBPREF=""
3796         SLIBSUF=".dll"
3797         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3798         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3799         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3800         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3801         SLIB_INSTALL_LINKS=
3802         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3803         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3804         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3805         objformat="win32"
3806         ranlib=:
3807         enable dos_paths
3808         ;;
3809     cygwin*)
3810         target_os=cygwin
3811         shlibdir_default="$bindir_default"
3812         SLIBPREF="cyg"
3813         SLIBSUF=".dll"
3814         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3815         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3816         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3817         SLIB_INSTALL_LINKS=
3818         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3819         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3820         objformat="win32"
3821         enable dos_paths
3822         ;;
3823     *-dos|freedos|opendos)
3824         network_extralibs="-lsocket"
3825         objformat="coff"
3826         enable dos_paths
3827         add_cppflags -U__STRICT_ANSI__
3828         ;;
3829     linux)
3830         enable dv1394
3831         enable section_data_rel_ro
3832         ;;
3833     irix*)
3834         target_os=irix
3835         ranlib="echo ignoring ranlib"
3836         ;;
3837     os/2*)
3838         ln_s="cp -f"
3839         objformat="aout"
3840         add_cppflags -D_GNU_SOURCE
3841         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3842         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3843         LIBSUF="_s.a"
3844         SLIBPREF=""
3845         SLIBSUF=".dll"
3846         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3847         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3848         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3849             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3850             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3851             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3852             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3853         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3854             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3855         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3856         enable dos_paths
3857         ;;
3858     gnu/kfreebsd)
3859         add_cppflags -D_BSD_SOURCE
3860         ;;
3861     gnu)
3862         ;;
3863     qnx)
3864         add_cppflags -D_QNX_SOURCE
3865         network_extralibs="-lsocket"
3866         ;;
3867     symbian)
3868         SLIBSUF=".dll"
3869         enable dos_paths
3870         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3871         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3872         add_ldflags -Wl,--target1-abs,--no-undefined \
3873                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3874                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3875         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3876                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3877                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3878         ;;
3879     osf1)
3880         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3881         ;;
3882     minix)
3883         ;;
3884     plan9)
3885         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3886                      -D_REENTRANT_SOURCE        \
3887                      -D_RESEARCH_SOURCE         \
3888                      -DFD_SETSIZE=96            \
3889                      -DHAVE_SOCK_OPTS
3890         add_compat strtod.o strtod=avpriv_strtod
3891         network_extralibs='-lbsd'
3892         exeobjs=compat/plan9/main.o
3893         cp_f='cp'
3894         ;;
3895     none)
3896         ;;
3897     *)
3898         die "Unknown OS '$target_os'."
3899         ;;
3900 esac
3901
3902 # determine libc flavour
3903
3904 probe_libc(){
3905     pfx=$1
3906     pfx_no_=${pfx%_}
3907     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3908     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3909         eval ${pfx}libc_type=uclibc
3910         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3911     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3912         eval ${pfx}libc_type=glibc
3913         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3914     # MinGW headers can be installed on Cygwin, so check for newlib first.
3915     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3916         eval ${pfx}libc_type=newlib
3917         add_${pfx}cppflags -U__STRICT_ANSI__
3918     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3919     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3920         eval ${pfx}libc_type=mingw64
3921         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3922         eval test \$${pfx_no_}cc_type = "gcc" &&
3923             add_${pfx}cppflags -D__printf__=__gnu_printf__
3924     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3925          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3926         eval ${pfx}libc_type=mingw32
3927         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3928             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3929             die "ERROR: MinGW32 runtime version must be >= 3.15."
3930         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3931         eval test \$${pfx_no_}cc_type = "gcc" &&
3932             add_${pfx}cppflags -D__printf__=__gnu_printf__
3933     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3934         eval ${pfx}libc_type=msvcrt
3935         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
3936             if [ "$pfx" = host_ ]; then
3937                 add_host_cppflags -Dsnprintf=_snprintf
3938             else
3939                 add_compat strtod.o strtod=avpriv_strtod
3940                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3941                                              _snprintf=avpriv_snprintf  \
3942                                              vsnprintf=avpriv_vsnprintf
3943             fi
3944         fi
3945         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3946         # 0x601 by default unless something else is set by the user.
3947         # This can easily lead to us detecting functions only present
3948         # in such new versions and producing binaries requiring windows 7.0.
3949         # Therefore explicitly set the default to XP unless the user has
3950         # set something else on the command line.
3951         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
3952         # family. For these cases, configure is free to use any functions
3953         # found in the SDK headers by default. (Alternatively, we could force
3954         # _WIN32_WINNT to 0x0602 in that case.)
3955         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3956             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
3957 #ifdef WINAPI_FAMILY
3958 #include <winapifamily.h>
3959 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
3960 #error not desktop
3961 #endif
3962 #endif
3963 EOF
3964     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3965         eval ${pfx}libc_type=klibc
3966     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3967         eval ${pfx}libc_type=bionic
3968     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3969         eval ${pfx}libc_type=solaris
3970         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3971     else
3972         eval ${pfx}libc_type=default
3973         add_${pfx}cppflags -D_DEFAULT_SOURCE
3974     fi
3975 }
3976
3977 probe_libc
3978 test -n "$libc_type" && enable libc_$libc_type
3979 probe_libc host_
3980 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3981
3982 case $libc_type in
3983     bionic)
3984         add_compat strtod.o strtod=avpriv_strtod
3985         ;;
3986 esac
3987
3988 # hacks for compiler/libc/os combinations
3989
3990 if enabled_all tms470 libc_glibc; then
3991     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3992     add_cppflags -D__USER_LABEL_PREFIX__=
3993     add_cppflags -D__builtin_memset=memset
3994     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3995     add_cflags   -pds=48    # incompatible redefinition of macro
3996 fi
3997
3998 if enabled_all ccc libc_glibc; then
3999     add_ldflags -Wl,-z,now  # calls to libots crash without this
4000 fi
4001
4002 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4003     add_cppflags '-I\$(SRC_PATH)/compat/float'
4004
4005 esc(){
4006     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4007 }
4008
4009 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
4010
4011 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4012
4013 set_default $PATHS_LIST
4014 set_default nm
4015
4016 # we need to build at least one lib type
4017 if ! enabled_any static shared; then
4018     cat <<EOF
4019 At least one library type must be built.
4020 Specify --enable-static to build the static libraries or --enable-shared to
4021 build the shared libraries as well. To only build the shared libraries specify
4022 --disable-static in addition to --enable-shared.
4023 EOF
4024     exit 1;
4025 fi
4026
4027 die_license_disabled() {
4028     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4029 }
4030
4031 die_license_disabled gpl libcdio
4032 die_license_disabled gpl libx264
4033 die_license_disabled gpl libx265
4034 die_license_disabled gpl libxavs
4035 die_license_disabled gpl libxvid
4036 die_license_disabled gpl x11grab
4037
4038 die_license_disabled nonfree libfaac
4039 die_license_disabled nonfree libfdk_aac
4040 die_license_disabled nonfree nvenc
4041 die_license_disabled nonfree openssl
4042
4043 die_license_disabled version3 libopencore_amrnb
4044 die_license_disabled version3 libopencore_amrwb
4045 die_license_disabled version3 libvo_aacenc
4046 die_license_disabled version3 libvo_amrwbenc
4047
4048 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4049
4050 disabled optimizations || check_cflags -fomit-frame-pointer
4051
4052 enable_weak_pic() {
4053     disabled pic && return
4054     enable pic
4055     add_cppflags -DPIC
4056     case "$target_os" in
4057     mingw*|cygwin*)
4058         ;;
4059     *)
4060         add_cflags -fPIC
4061         ;;
4062     esac
4063     add_asflags  -fPIC
4064 }
4065
4066 enabled pic && enable_weak_pic
4067
4068 check_cc <<EOF || die "Symbol mangling check failed."
4069 int ff_extern;
4070 EOF
4071 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4072 extern_prefix=${sym%%ff_extern*}
4073
4074 check_cc <<EOF && enable_weak inline_asm
4075 void foo(void) { __asm__ volatile ("" ::); }
4076 EOF
4077
4078 _restrict=
4079 for restrict_keyword in restrict __restrict__ __restrict; do
4080     check_cc <<EOF && _restrict=$restrict_keyword && break
4081 void foo(char * $restrict_keyword p);
4082 EOF
4083 done
4084
4085 check_cc <<EOF && enable pragma_deprecated
4086 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4087 EOF
4088
4089 check_cc <<EOF && enable attribute_packed
4090 struct { int x; } __attribute__((packed)) x;
4091 EOF
4092
4093 check_cc <<EOF && enable attribute_may_alias
4094 union { int x; } __attribute__((may_alias)) x;
4095 EOF
4096
4097 check_cc <<EOF || die "endian test failed"
4098 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4099 EOF
4100 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4101
4102 check_gas() {
4103     log "check_gas using '$as' as AS"
4104     # :vararg is used on aarch64, arm and ppc altivec
4105     check_as <<EOF || return 1
4106 .macro m n, y:vararg=0
4107 \n: .int \y
4108 .endm
4109 m x
4110 EOF
4111     # .altmacro is only used in arm asm
4112     ! enabled arm || check_as <<EOF || return 1
4113 .altmacro
4114 EOF
4115     enable gnu_as
4116     return 0
4117 }
4118
4119 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4120     nogas=:
4121     enabled_any arm aarch64 && nogas=die
4122     enabled_all ppc altivec && nogas=warn
4123     as_noop=-v
4124
4125     case $as_type in
4126         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4127         gcc)  gaspp_as_type=gas ;;
4128         *)    gaspp_as_type=$as_type ;;
4129     esac
4130
4131     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4132
4133     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4134         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4135
4136     if ! check_gas ; then
4137         as=${gas:=$as}
4138         check_gas || \
4139             $nogas "GNU assembler not found, install/update gas-preprocessor"
4140     fi
4141
4142     check_as <<EOF && enable as_func
4143 .func test
4144 .endfunc
4145 EOF
4146 fi
4147
4148 check_inline_asm inline_asm_labels '"1:\n"'
4149
4150 if enabled aarch64; then
4151     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4152     # internal assembler in clang 3.3 does not support this instruction
4153     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4154     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4155
4156     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4157
4158 elif enabled alpha; then
4159
4160     check_cflags -mieee
4161
4162 elif enabled arm; then
4163
4164     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4165     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4166     enabled thumb && check_cflags -mthumb || check_cflags -marm
4167
4168     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4169         enable vfp_args
4170     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4171         enable vfp_args
4172     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4173         case "${cross_prefix:-$cc}" in
4174             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4175             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4176 __asm__ (".eabi_attribute 28, 1");
4177 int main(void) { return 0; }
4178 EOF
4179         esac
4180         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4181     fi
4182
4183     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4184     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4185     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4186     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4187     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4188     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4189
4190     [ $target_os = linux ] || [ $target_os = android ] ||
4191         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4192             $ARCH_EXT_LIST_ARM
4193
4194     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4195
4196     check_as <<EOF && enable as_dn_directive
4197 ra .dn d0.i16
4198 .unreq ra
4199 EOF
4200
4201     # llvm's integrated assembler supports .object_arch from llvm 3.5
4202     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4203 .object_arch armv4
4204 EOF
4205
4206     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4207
4208 elif enabled mips; then
4209
4210     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4211
4212     # make sure that only an instruction set is enabled
4213     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4214
4215     if enabled mips64; then
4216         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4217             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4218                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4219     else
4220         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4221             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4222                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4223     fi
4224
4225 elif enabled parisc; then
4226
4227     if enabled gcc; then
4228         case $($cc -dumpversion) in
4229             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4230         esac
4231     fi
4232
4233 elif enabled ppc; then
4234
4235     enable local_aligned_8 local_aligned_16
4236
4237     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4238     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4239     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4240     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4241
4242     # AltiVec flags: The FSF version of GCC differs from the Apple version
4243     if enabled altivec; then
4244         check_cflags -maltivec -mabi=altivec &&
4245         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4246         check_cflags -faltivec
4247
4248         # check if our compiler supports Motorola AltiVec C API
4249         check_cc <<EOF || disable altivec
4250 $inc_altivec_h
4251 int main(void) {
4252     vector signed int v1 = (vector signed int) { 0 };
4253     vector signed int v2 = (vector signed int) { 1 };
4254     v1 = vec_add(v1, v2);
4255     return 0;
4256 }
4257 EOF
4258
4259         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4260     fi
4261
4262     if enabled vsx; then
4263         check_cflags -mvsx &&
4264         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4265     fi
4266
4267     if enabled power8; then
4268         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4269     fi
4270
4271 elif enabled x86; then
4272
4273     check_builtin rdtsc    intrin.h   "__rdtsc()"
4274     check_builtin mm_empty mmintrin.h "_mm_empty()"
4275
4276     enable local_aligned_8 local_aligned_16
4277
4278     # check whether EBP is available on x86
4279     # As 'i' is stored on the stack, this program will crash
4280     # if the base pointer is used to access it because the
4281     # base pointer is cleared in the inline assembly code.
4282     check_exec_crash <<EOF && enable ebp_available
4283 volatile int i=0;
4284 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4285 return i;
4286 EOF
4287
4288     # check whether EBX is available on x86
4289     check_inline_asm ebx_available '""::"b"(0)' &&
4290         check_inline_asm ebx_available '"":::"%ebx"'
4291
4292     # check whether xmm clobbers are supported
4293     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4294
4295     # check whether binutils is new enough to compile SSSE3/MMXEXT
4296     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4297     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4298
4299     if ! disabled_any asm mmx yasm; then
4300         if check_cmd $yasmexe --version; then
4301             enabled x86_64 && yasm_extra="-m amd64"
4302             yasm_debug="-g dwarf2"
4303         elif check_cmd nasm -v; then
4304             yasmexe=nasm
4305             yasm_debug="-g -F dwarf"
4306             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4307         fi
4308
4309         YASMFLAGS="-f $objformat $yasm_extra"
4310         enabled pic               && append YASMFLAGS "-DPIC"
4311         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4312         case "$objformat" in
4313             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4314         esac
4315
4316         check_yasm "movbe ecx, [5]" && enable yasm ||
4317             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4318         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4319         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4320         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4321         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4322         check_yasm "CPU amdnop" || disable cpunop
4323     fi
4324
4325     case "$cpu" in
4326         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4327             disable fast_clz
4328         ;;
4329     esac
4330
4331 fi
4332
4333 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4334
4335 check_ldflags -Wl,--as-needed
4336
4337 if check_func dlopen; then
4338     ldl=
4339 elif check_func dlopen -ldl; then
4340     ldl=-ldl
4341 fi
4342
4343 if ! disabled network; then
4344     check_func getaddrinfo $network_extralibs
4345     check_func inet_aton $network_extralibs
4346
4347     check_type netdb.h "struct addrinfo"
4348     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4349     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4350     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4351     check_type poll.h "struct pollfd"
4352     check_type netinet/sctp.h "struct sctp_event_subscribe"
4353     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4354     check_type netinet/in.h "struct sockaddr_in6"
4355     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4356     check_type "sys/types.h sys/socket.h" socklen_t
4357
4358     # Prefer arpa/inet.h over winsock2
4359     if check_header arpa/inet.h ; then
4360         check_func closesocket
4361     elif check_header winsock2.h ; then
4362         check_func_headers winsock2.h closesocket -lws2 &&
4363             network_extralibs="-lws2" ||
4364         { check_func_headers winsock2.h closesocket -lws2_32 &&
4365             network_extralibs="-lws2_32"; } || disable winsock2_h network
4366         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4367
4368         check_type ws2tcpip.h socklen_t
4369         check_type ws2tcpip.h "struct addrinfo"
4370         check_type ws2tcpip.h "struct group_source_req"
4371         check_type ws2tcpip.h "struct ip_mreq_source"
4372         check_type ws2tcpip.h "struct ipv6_mreq"
4373         check_type winsock2.h "struct pollfd"
4374         check_struct winsock2.h "struct sockaddr" sa_len
4375         check_type ws2tcpip.h "struct sockaddr_in6"
4376         check_type ws2tcpip.h "struct sockaddr_storage"
4377     else
4378         disable network
4379     fi
4380 fi
4381
4382 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4383 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4384 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4385 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4386
4387 case "$custom_allocator" in
4388     jemalloc)
4389         # jemalloc by default does not use a prefix
4390         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4391     ;;
4392     tcmalloc)
4393         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
4394         malloc_prefix=tc_
4395     ;;
4396 esac
4397
4398 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4399 check_func  ${malloc_prefix}memalign            && enable memalign
4400 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4401
4402 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4403     check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4404
4405 check_func  fcntl
4406 check_func  fork
4407 check_func  gethrtime
4408 check_func  getopt
4409 check_func  getrusage
4410 check_func  gettimeofday
4411 check_func  gmtime_r
4412 check_func  isatty
4413 check_func  localtime_r
4414 check_func  mach_absolute_time
4415 check_func  mkstemp
4416 check_func  mmap
4417 check_func  mprotect
4418 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4419 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4420 check_func  sched_getaffinity
4421 check_func  setrlimit
4422 check_func  strerror_r
4423 check_func  sysconf
4424 check_func  sysctl
4425 check_func  usleep
4426
4427 check_func_headers io.h setmode
4428 check_func_headers stdlib.h getenv
4429
4430 check_func_headers windows.h CoTaskMemFree -lole32
4431 check_func_headers windows.h GetProcessAffinityMask
4432 check_func_headers windows.h GetProcessTimes
4433 check_func_headers windows.h GetSystemTimeAsFileTime
4434 check_func_headers windows.h LoadLibrary
4435 check_func_headers windows.h MapViewOfFile
4436 check_func_headers windows.h SetConsoleTextAttribute
4437 check_func_headers windows.h Sleep
4438 check_func_headers windows.h VirtualAlloc
4439 check_struct windows.h "CONDITION_VARIABLE" Ptr
4440
4441 check_header direct.h
4442 check_header dlfcn.h
4443 check_header d3d11.h
4444 check_header dxva.h
4445 check_header dxva2api.h
4446 check_header io.h
4447 check_header mach/mach_time.h
4448 check_header malloc.h
4449 check_header poll.h
4450 check_header sys/mman.h
4451 check_header sys/param.h
4452 check_header sys/resource.h
4453 check_header sys/select.h
4454 check_header sys/time.h
4455 check_header sys/un.h
4456 check_header unistd.h
4457 check_header valgrind/valgrind.h
4458 check_header vdpau/vdpau.h
4459 check_header vdpau/vdpau_x11.h
4460 check_header VideoDecodeAcceleration/VDADecoder.h
4461 check_header windows.h
4462 check_header X11/extensions/XvMClib.h
4463
4464 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4465 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4466 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4467
4468 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4469
4470 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4471 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4472 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4473
4474 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4475
4476 if ! disabled w32threads && ! enabled pthreads; then
4477     check_func_headers "windows.h process.h" _beginthreadex &&
4478         enable w32threads || disable w32threads
4479 fi
4480
4481 # check for some common methods of building with pthread support
4482 # do this before the optional library checks as some of them require pthreads
4483 if ! disabled pthreads && ! enabled w32threads; then
4484     enable pthreads
4485     if check_func pthread_join -pthread; then
4486         add_cflags -pthread
4487         add_extralibs -pthread
4488     elif check_func pthread_join -pthreads; then
4489         add_cflags -pthreads
4490         add_extralibs -pthreads
4491     elif check_func pthread_join -lpthreadGC2; then
4492         add_extralibs -lpthreadGC2
4493     elif check_lib pthread.h pthread_join -lpthread; then
4494         :
4495     elif ! check_func pthread_join; then
4496         disable pthreads
4497     fi
4498 fi
4499
4500 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4501 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4502
4503 check_lib math.h sin -lm && LIBM="-lm"
4504 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4505
4506 atan2f_args=2
4507 ldexpf_args=2
4508 powf_args=2
4509
4510 for func in $MATH_FUNCS; do
4511     eval check_mathfunc $func \${${func}_args:-1}
4512 done
4513
4514 # these are off by default, so fail if requested and not available
4515 enabled avisynth          && { check_lib2 "avisynth/avisynth_c.h windows.h" LoadLibrary ||
4516                                check_lib2 "avxsynth/avxsynth_c.h dlfcn.h" dlopen -ldl   ||
4517                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4518 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4519 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4520 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4521 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4522 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4523 enabled libfdk_aac        && require_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4524 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4525 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4526 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4527                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4528                                done || die "ERROR: libgsm not found"; }
4529 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4530 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4531 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
4532 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4533 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4534 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4535 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4536 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
4537 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4538                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4539 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4540 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4541 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4542 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4543 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
4544 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4545 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4546 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4547 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4548 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4549 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4550 enabled libvpx            && require_pkg_config "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version && {
4551     enabled libvpx_vp8_decoder && {
4552         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
4553             disable libvpx_vp8_decoder;
4554     }
4555     enabled libvpx_vp8_encoder && {
4556         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
4557             disable libvpx_vp8_encoder;
4558     }
4559     enabled libvpx_vp9_decoder && {
4560         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
4561             disable libvpx_vp9_decoder;
4562     }
4563     enabled libvpx_vp9_encoder && {
4564         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
4565             disable libvpx_vp9_encoder;
4566     }
4567     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
4568         die "libvpx enabled but no supported decoders found"
4569     fi
4570 }
4571 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4572 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4573 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4574                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4575                                die "ERROR: libx264 version must be >= 0.118."; } &&
4576                              { check_cpp_condition x264.h "X264_MPEG2" &&
4577                                enable libx262; }
4578 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
4579                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
4580                                die "ERROR: libx265 version must be >= 57."; }
4581 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4582 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4583 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4584                                 { ! enabled cross_compile && {
4585                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
4586                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
4587                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
4588                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
4589                                die "ERROR: mmal not found"; }
4590 enabled openssl           && { check_pkg_config openssl openssl/ssl.h SSL_library_init && {
4591                                add_cflags $openssl_cflags && add_extralibs $openssl_libs; }||
4592                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4593                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4594                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4595                                die "ERROR: openssl not found"; }
4596
4597 if enabled gnutls; then
4598     { check_lib2 gmp.h mpz_export -lgmp && enable gmp; } ||
4599     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4600 fi
4601
4602 # libdc1394 check
4603 if enabled libdc1394; then
4604     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
4605         enable libdc1394_2; } ||
4606     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4607         enable libdc1394_1; } ||
4608     die "ERROR: No version of libdc1394 found "
4609 fi
4610
4611 if enabled nvenc; then
4612     check_header cuda.h || die "ERROR: cuda.h not found.";
4613     check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found.";
4614     check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 5" ||
4615         die "ERROR: NVENC API version 4 or older is not supported";
4616 fi
4617
4618 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4619     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4620     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4621     enable sdl
4622 fi
4623
4624 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4625 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4626
4627 check_header linux/fb.h
4628 check_header linux/videodev2.h
4629 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4630
4631 check_header AVFoundation/AVFoundation.h &&
4632     check_objcflags -fobjc-arc &&
4633     add_extralibs -framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia ||
4634     disable AVFoundation_AVFoundation_h
4635
4636 check_header sys/videoio.h
4637
4638 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4639 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4640 # w32api 3.12 had it defined wrong
4641 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4642
4643 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4644 { check_header dev/bktr/ioctl_meteor.h &&
4645   check_header dev/bktr/ioctl_bt848.h; } ||
4646 { check_header machine/ioctl_meteor.h &&
4647   check_header machine/ioctl_bt848.h; } ||
4648 { check_header dev/video/meteor/ioctl_meteor.h &&
4649   check_header dev/video/bktr/ioctl_bt848.h; } ||
4650 check_header dev/ic/bt8xx.h
4651
4652 check_header sndio.h
4653 check_header sys/soundcard.h
4654 check_header soundcard.h
4655
4656 enabled_any alsa_indev alsa_outdev &&
4657     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4658
4659 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4660     check_func jack_port_get_latency_range -ljack
4661
4662 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4663
4664 if enabled libcdio; then
4665     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4666     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4667     die "ERROR: No usable libcdio/cdparanoia found"
4668 fi
4669
4670 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4671
4672 if enabled libxcb || enabled x11grab && ! disabled libxcb; then
4673     check_pkg_config xcb-shape xcb/shape.h xcb_shape_rectangles || {
4674         enabled libxcb && die "ERROR: libxcb not found";
4675     } && disable x11grab && enable libxcb
4676
4677     disabled libxcb_shm ||
4678         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
4679             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
4680         } && check_header sys/shm.h && enable libxcb_shm
4681
4682     disabled libxcb_xfixes ||
4683         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
4684             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
4685         } && enable libxcb_xfixes
4686
4687     add_cflags "$xcb_event_cflags $xcb_shm_cflags $xcb_xfixes_cflags"
4688     add_extralibs "$xcb_event_libs $xcb_shm_libs $xcb_xfixes_libs"
4689 fi
4690
4691 if enabled x11grab; then
4692     enabled xlib || die "ERROR: Xlib not found"
4693     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
4694     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
4695 fi
4696
4697 enabled vaapi && enabled xlib &&
4698     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
4699     enable vaapi_x11
4700
4701 enabled vdpau &&
4702     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4703     disable vdpau
4704
4705 enabled vdpau && enabled xlib &&
4706     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4707     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4708     enable vdpau_x11
4709
4710 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4711
4712 # add some useful compiler flags if supported
4713 check_cflags -Wdeclaration-after-statement
4714 check_cflags -Wall
4715 check_cflags -Wdisabled-optimization
4716 check_cflags -Wpointer-arith
4717 check_cflags -Wredundant-decls
4718 check_cflags -Wwrite-strings
4719 check_cflags -Wtype-limits
4720 check_cflags -Wundef
4721 check_cflags -Wmissing-prototypes
4722 check_cflags -Wstrict-prototypes
4723 enabled extra_warnings && check_cflags -Winline
4724 enabled extra_warnings && check_cflags -Wcast-qual
4725
4726 check_disable_warning(){
4727     warning_flag=-W${1#-Wno-}
4728     test_cflags $warning_flag && add_cflags $1
4729 }
4730
4731 check_disable_warning -Wno-parentheses
4732 check_disable_warning -Wno-switch
4733 check_disable_warning -Wno-format-zero-length
4734 check_disable_warning -Wno-pointer-sign
4735
4736 # add some linker flags
4737 check_ldflags -Wl,--warn-common
4738 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4739 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
4740 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4741
4742 # add some strip flags
4743 # -wN '..@*' is more selective than -x, but not available everywhere.
4744 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4745
4746 enabled neon_clobber_test &&
4747     check_ldflags -Wl,--wrap,avcodec_open2              \
4748                   -Wl,--wrap,avcodec_decode_audio4      \
4749                   -Wl,--wrap,avcodec_decode_video2      \
4750                   -Wl,--wrap,avcodec_decode_subtitle2   \
4751                   -Wl,--wrap,avcodec_encode_audio2      \
4752                   -Wl,--wrap,avcodec_encode_video2      \
4753                   -Wl,--wrap,avcodec_encode_subtitle    \
4754                   -Wl,--wrap,avresample_convert ||
4755     disable neon_clobber_test
4756
4757 enabled xmm_clobber_test &&
4758     check_ldflags -Wl,--wrap,avcodec_open2              \
4759                   -Wl,--wrap,avcodec_decode_audio4      \
4760                   -Wl,--wrap,avcodec_decode_video2      \
4761                   -Wl,--wrap,avcodec_decode_subtitle2   \
4762                   -Wl,--wrap,avcodec_encode_audio2      \
4763                   -Wl,--wrap,avcodec_encode_video2      \
4764                   -Wl,--wrap,avcodec_encode_subtitle    \
4765                   -Wl,--wrap,avresample_convert         \
4766                   -Wl,--wrap,sws_scale ||
4767     disable xmm_clobber_test
4768
4769 echo "X { local: *; };" > $TMPV
4770 if test_ldflags -Wl,--version-script,$TMPV; then
4771     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4772 elif test_ldflags -Wl,-M,$TMPV; then
4773     append SHFLAGS '-Wl,-M,\$(SUBDIR)lib\$(NAME).ver-sol2'
4774 fi
4775
4776 check_cc <<EOF && enable symver_asm_label
4777 void ff_foo(void) __asm__ ("av_foo@VERSION");
4778 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4779 EOF
4780     check_cc <<EOF && enable symver_gnu_asm
4781 __asm__(".symver ff_foo,av_foo@VERSION");
4782 void ff_foo(void) {}
4783 EOF
4784
4785 if [ -z "$optflags" ]; then
4786     if enabled small; then
4787         optflags=$cflags_size
4788     elif enabled optimizations; then
4789         optflags=$cflags_speed
4790     else
4791         optflags=$cflags_noopt
4792     fi
4793 fi
4794
4795 check_optflags(){
4796     check_cflags "$@"
4797     enabled lto && check_ldflags "$@"
4798 }
4799
4800
4801 if enabled lto; then
4802     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4803     check_cflags  -flto
4804     check_ldflags -flto $cpuflags
4805 fi
4806
4807 check_optflags $optflags
4808 check_optflags -fno-math-errno
4809 check_optflags -fno-signed-zeros
4810
4811 if enabled icc; then
4812     # Just warnings, no remarks
4813     check_cflags -w1
4814 &nbs