2eb686a59178d19335c4af05f1b4a25890dd1ad2
[libav.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89   --enable-rpath           use rpath when linking programs [USE WITH CARE]
90
91 Licensing options:
92   --enable-gpl             allow use of GPL code, the resulting libs
93                            and binaries will be under GPL [no]
94   --enable-version3        upgrade (L)GPL to version 3 [no]
95   --enable-nonfree         allow use of nonfree code, the resulting libs
96                            and binaries will be unredistributable [no]
97
98 Configuration options:
99   --disable-static         do not build static libraries [no]
100   --enable-shared          build shared libraries [no]
101   --enable-small           optimize for size instead of speed
102   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
103   --enable-gray            enable full grayscale support (slower color)
104   --disable-swscale-alpha  disable alpha channel support in swscale
105   --disable-all            disable building components, libraries and programs
106
107 Program options:
108   --disable-programs       do not build command line programs
109   --disable-avconv         disable avconv build
110   --disable-avplay         disable avplay build
111   --disable-avprobe        disable avprobe build
112   --disable-avserver       deprecated, does nothing
113
114 Component options:
115   --disable-doc            do not build documentation
116   --disable-avdevice       disable libavdevice build
117   --disable-avcodec        disable libavcodec build
118   --disable-avformat       disable libavformat build
119   --disable-avutil         disable libavutil build
120   --disable-swscale        disable libswscale build
121   --disable-avfilter       disable video filter support [no]
122   --disable-avresample     disable libavresample build [no]
123   --disable-pthreads       disable pthreads [auto]
124   --disable-w32threads     disable Win32 threads [auto]
125   --disable-network        disable network support [no]
126   --disable-dct            disable DCT code
127   --disable-error-resilience disable error resilience code
128   --disable-lsp            disable LSP code
129   --disable-lzo            disable LZO decoder code
130   --disable-mdct           disable MDCT code
131   --disable-rdft           disable RDFT code
132   --disable-fft            disable FFT code
133   --disable-faan           disable floating point AAN (I)DCT code
134
135 Hardware accelerators:
136   --enable-d3d11va         enable D3D11VA code
137   --enable-dxva2           enable DXVA2 code
138   --enable-vaapi           enable VAAPI code
139   --enable-vda             enable VDA code
140   --enable-vdpau           enable VDPAU code
141
142 Hardware-accelerated decoding/encoding:
143   --enable-cuda            enable dynamically linked CUDA [no]
144   --enable-libmfx          enable HW acceleration through libmfx
145   --enable-mmal            enable decoding via MMAL [no]
146   --enable-nvenc           enable encoding via NVENC [no]
147   --enable-omx             enable encoding via OpenMAX IL [no]
148   --enable-omx-rpi         enable encoding via OpenMAX IL for Raspberry Pi [no]
149
150 Individual component options:
151   --disable-everything     disable all components listed below
152   --disable-encoder=NAME   disable encoder NAME
153   --enable-encoder=NAME    enable encoder NAME
154   --disable-encoders       disable all encoders
155   --disable-decoder=NAME   disable decoder NAME
156   --enable-decoder=NAME    enable decoder NAME
157   --disable-decoders       disable all decoders
158   --disable-hwaccel=NAME   disable hwaccel NAME
159   --enable-hwaccel=NAME    enable hwaccel NAME
160   --disable-hwaccels       disable all hwaccels
161   --disable-muxer=NAME     disable muxer NAME
162   --enable-muxer=NAME      enable muxer NAME
163   --disable-muxers         disable all muxers
164   --disable-demuxer=NAME   disable demuxer NAME
165   --enable-demuxer=NAME    enable demuxer NAME
166   --disable-demuxers       disable all demuxers
167   --enable-parser=NAME     enable parser NAME
168   --disable-parser=NAME    disable parser NAME
169   --disable-parsers        disable all parsers
170   --enable-bsf=NAME        enable bitstream filter NAME
171   --disable-bsf=NAME       disable bitstream filter NAME
172   --disable-bsfs           disable all bitstream filters
173   --enable-protocol=NAME   enable protocol NAME
174   --disable-protocol=NAME  disable protocol NAME
175   --disable-protocols      disable all protocols
176   --enable-indev=NAME      enable input device NAME
177   --disable-indev=NAME     disable input device NAME
178   --disable-indevs         disable input devices
179   --enable-outdev=NAME     enable output device NAME
180   --disable-outdev=NAME    disable output device NAME
181   --disable-outdevs        disable output devices
182   --disable-devices        disable all devices
183   --enable-filter=NAME     enable filter NAME
184   --disable-filter=NAME    disable filter NAME
185   --disable-filters        disable all filters
186
187 External library support:
188   --enable-avisynth        enable reading of AviSynth script files [no]
189   --enable-bzlib           enable bzlib [autodetect]
190   --enable-frei0r          enable frei0r video filtering
191   --enable-gnutls          enable gnutls [no]
192   --enable-libbs2b         enable bs2b DSP library [no]
193   --enable-libcdio         enable audio CD grabbing with libcdio
194   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
195                            and libraw1394 [no]
196   --enable-libdcadec       enable DCA decoding via libdcadec [no]
197   --enable-libfaac         enable AAC encoding via libfaac [no]
198   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
199   --enable-libfreetype     enable libfreetype [no]
200   --enable-libgsm          enable GSM de/encoding via libgsm [no]
201   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
202   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
203   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
204   --enable-libnpp          enable NVIDIA Performance Primitives-based code [no]
205   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
206   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
207   --enable-libopencv       enable video filtering via libopencv [no]
208   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
209   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
210   --enable-libopus         enable Opus de/encoding via libopus [no]
211   --enable-libpulse        enable Pulseaudio input via libpulse [no]
212   --enable-librtmp         enable RTMP[E] support via librtmp [no]
213   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
214   --enable-libsnappy       enable Snappy compression [no]
215   --enable-libspeex        enable Speex de/encoding via libspeex [no]
216   --enable-libtheora       enable Theora encoding via libtheora [no]
217   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
218   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
219   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
220   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
221   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
222   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
223   --enable-libwebp         enable WebP encoding via libwebp [no]
224   --enable-libx264         enable H.264 encoding via x264 [no]
225   --enable-libx265         enable HEVC encoding via x265 [no]
226   --enable-libxavs         enable AVS encoding via xavs [no]
227   --enable-libxcb          enable X11 grabbing using XCB [no]
228   --enable-libxcb-shm      enable X11 grabbing shm communication [auto]
229   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [auto]
230   --enable-libxvid         enable Xvid encoding via xvidcore,
231                            native MPEG-4/Xvid encoder exists [no]
232   --enable-openssl         enable openssl [no]
233   --enable-x11grab         enable X11 grabbing (legacy) [no]
234   --enable-zlib            enable zlib [autodetect]
235
236 Toolchain options:
237   --arch=ARCH              select architecture [$arch]
238   --cpu=CPU                select the minimum required CPU (affects
239                            instruction selection, may crash on older CPUs)
240   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
241   --enable-cross-compile   assume a cross-compiler is used
242   --sysroot=PATH           root of cross-build tree
243   --sysinclude=PATH        location of cross-build system headers
244   --target-os=OS           compiler targets OS [$target_os]
245   --target-exec=CMD        command to run executables on target
246   --target-path=DIR        path to view of build directory on target
247   --target-samples=DIR     path to samples directory on target
248   --toolchain=NAME         set tool defaults according to NAME
249   --nm=NM                  use nm tool
250   --ar=AR                  use archive tool AR [$ar_default]
251   --as=AS                  use assembler AS [$as_default]
252   --cc=CC                  use C compiler CC [$cc_default]
253   --objcc=OCC              use ObjC compiler OCC [$cc_default]
254   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
255   --ld=LD                  use linker LD
256   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
257   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
258   --host-cc=HOSTCC         use host C compiler HOSTCC
259   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
260   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
261   --host-ld=HOSTLD         use host linker HOSTLD
262   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
263   --host-libs=HLIBS        use libs HLIBS when linking for host
264   --host-os=OS             compiler host OS [$target_os]
265   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
266   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
267   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
268   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
269   --extra-libs=ELIBS       add ELIBS [$ELIBS]
270   --extra-version=STRING   version string suffix []
271   --optflags=OPTFLAGS      override optimization-related compiler flags
272   --build-suffix=SUFFIX    library name suffix []
273   --enable-pic             build position-independent code
274   --enable-thumb           compile for Thumb instruction set
275   --enable-lto             use link-time optimization
276   --env="ENV=override"     override the environment variables
277
278 Advanced options (experts only):
279   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
280   --custom-allocator=NAME  use a supported custom allocator
281   --disable-symver         disable symbol versioning
282   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
283   --disable-safe-bitstream-reader
284                            disable buffer boundary checking in bitreaders
285                            (faster, but may crash)
286   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
287   --enable-sram            allow use of on-chip SRAM
288
289 Optimization options (experts only):
290   --disable-asm            disable all assembly optimizations
291   --disable-altivec        disable AltiVec optimizations
292   --disable-vsx            disable VSX optimizations
293   --disable-power8         disable POWER8 optimizations
294   --disable-amd3dnow       disable 3DNow! optimizations
295   --disable-amd3dnowext    disable 3DNow! extended optimizations
296   --disable-mmx            disable MMX optimizations
297   --disable-mmxext         disable MMXEXT optimizations
298   --disable-sse            disable SSE optimizations
299   --disable-sse2           disable SSE2 optimizations
300   --disable-sse3           disable SSE3 optimizations
301   --disable-ssse3          disable SSSE3 optimizations
302   --disable-sse4           disable SSE4 optimizations
303   --disable-sse42          disable SSE4.2 optimizations
304   --disable-avx            disable AVX optimizations
305   --disable-xop            disable XOP optimizations
306   --disable-fma3           disable FMA3 optimizations
307   --disable-fma4           disable FMA4 optimizations
308   --disable-avx2           disable AVX2 optimizations
309   --disable-armv5te        disable armv5te optimizations
310   --disable-armv6          disable armv6 optimizations
311   --disable-armv6t2        disable armv6t2 optimizations
312   --disable-vfp            disable VFP optimizations
313   --disable-neon           disable NEON optimizations
314   --disable-inline-asm     disable use of inline assembly
315   --disable-yasm           disable use of nasm/yasm assembly
316
317 Developer options (useful when working on Libav itself):
318   --disable-debug          disable debugging symbols
319   --enable-debug=LEVEL     set the debug level [$debuglevel]
320   --disable-optimizations  disable compiler optimizations
321   --enable-extra-warnings  enable more compiler warnings
322   --samples=PATH           location of test samples for FATE, if not set use
323                            \$LIBAV_SAMPLES at make invocation time.
324   --enable-neon-clobber-test check NEON registers for clobbering (should be
325                            used only for debugging purposes)
326   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
327                            should be used only for debugging purposes)
328   --enable-random          randomly enable/disable components
329   --disable-random
330   --enable-random=LIST     randomly enable/disable specific components or
331   --disable-random=LIST    component groups. LIST is a comma-separated list
332                            of NAME[:PROB] entries where NAME is a component
333                            (group) and PROB the probability associated with
334                            NAME (default 0.5).
335   --random-seed=VALUE      seed value for --enable/disable-random
336   --disable-valgrind-backtrace do not print a backtrace under Valgrind
337                            (only applies to --disable-optimizations builds)
338
339 NOTE: Object files are built at the place where configure is launched.
340 EOF
341   exit 0
342 }
343
344 quotes='""'
345
346 log(){
347     echo "$@" >> $logfile
348 }
349
350 log_file(){
351     log BEGIN $1
352     i=1
353     while read line; do
354         printf '%5s   %s\n' "${i}" "${line}"
355         i=$(($i+1))
356     done < $1 >> $logfile
357     log END $1
358 }
359
360 echolog(){
361     log "$@"
362     echo "$@"
363 }
364
365 warn(){
366     log "WARNING: $*"
367     WARNINGS="${WARNINGS}WARNING: $*\n"
368 }
369
370 die(){
371     echolog "$@"
372     cat <<EOF
373
374 If you think configure made a mistake, make sure you are using the latest
375 version from Git.  If the latest version fails, report the problem to the
376 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
377 EOF
378     if disabled logging; then
379         cat <<EOF
380 Rerun configure with logging enabled (do not use --disable-logging), and
381 include the log this produces with your report.
382 EOF
383     else
384         cat <<EOF
385 Include the log file "$logfile" produced by configure as this will help
386 solving the problem.
387 EOF
388     fi
389     exit 1
390 }
391
392 # Avoid locale weirdness, besides we really just want to translate ASCII.
393 toupper(){
394     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
395 }
396
397 tolower(){
398     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
399 }
400
401 c_escape(){
402     echo "$*" | sed 's/["\\]/\\\0/g'
403 }
404
405 sh_quote(){
406     v=$(echo "$1" | sed "s/'/'\\\\''/g")
407     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
408     echo "$v"
409 }
410
411 cleanws(){
412     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
413 }
414
415 filter(){
416     pat=$1
417     shift
418     for v; do
419         eval "case $v in $pat) echo $v ;; esac"
420     done
421 }
422
423 filter_out(){
424     pat=$1
425     shift
426     for v; do
427         eval "case $v in $pat) ;; *) echo $v ;; esac"
428     done
429 }
430
431 map(){
432     m=$1
433     shift
434     for v; do eval $m; done
435 }
436
437 add_suffix(){
438     suffix=$1
439     shift
440     for v; do echo ${v}${suffix}; done
441 }
442
443 set_all(){
444     value=$1
445     shift
446     for var in $*; do
447         eval $var=$value
448     done
449 }
450
451 set_weak(){
452     value=$1
453     shift
454     for var; do
455         eval : \${$var:=$value}
456     done
457 }
458
459 sanitize_var_name(){
460     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
461 }
462
463 set_safe(){
464     var=$1
465     shift
466     eval $(sanitize_var_name "$var")='$*'
467 }
468
469 get_safe(){
470     eval echo \$$(sanitize_var_name "$1")
471 }
472
473 pushvar(){
474     for pvar in $*; do
475         eval level=\${${pvar}_level:=0}
476         eval ${pvar}_${level}="\$$pvar"
477         eval ${pvar}_level=$(($level+1))
478     done
479 }
480
481 popvar(){
482     for pvar in $*; do
483         eval level=\${${pvar}_level:-0}
484         test $level = 0 && continue
485         eval level=$(($level-1))
486         eval $pvar="\${${pvar}_${level}}"
487         eval ${pvar}_level=$level
488         eval unset ${pvar}_${level}
489     done
490 }
491
492 enable(){
493     set_all yes $*
494 }
495
496 disable(){
497     set_all no $*
498 }
499
500 enable_weak(){
501     set_weak yes $*
502 }
503
504 disable_weak(){
505     set_weak no $*
506 }
507
508 enable_safe(){
509     for var; do
510         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
511     done
512 }
513
514 disable_safe(){
515     for var; do
516         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
517     done
518 }
519
520 do_enable_deep(){
521     for var; do
522         enabled $var && continue
523         eval sel="\$${var}_select"
524         eval sgs="\$${var}_suggest"
525         pushvar var sgs
526         enable_deep $sel
527         popvar sgs
528         enable_deep_weak $sgs
529         popvar var
530     done
531 }
532
533 enable_deep(){
534     do_enable_deep $*
535     enable $*
536 }
537
538 enable_deep_weak(){
539     for var; do
540         disabled $var && continue
541         pushvar var
542         do_enable_deep $var
543         popvar var
544         enable_weak $var
545     done
546 }
547
548 enabled(){
549     test "${1#!}" = "$1" && op== || op=!=
550     eval test "x\$${1#!}" $op "xyes"
551 }
552
553 disabled(){
554     test "${1#!}" = "$1" && op== || op=!=
555     eval test "x\$${1#!}" $op "xno"
556 }
557
558 enabled_all(){
559     for opt; do
560         enabled $opt || return 1
561     done
562 }
563
564 disabled_all(){
565     for opt; do
566         disabled $opt || return 1
567     done
568 }
569
570 enabled_any(){
571     for opt; do
572         enabled $opt && return 0
573     done
574 }
575
576 disabled_any(){
577     for opt; do
578         disabled $opt && return 0
579     done
580     return 1
581 }
582
583 set_default(){
584     for opt; do
585         eval : \${$opt:=\$${opt}_default}
586     done
587 }
588
589 is_in(){
590     value=$1
591     shift
592     for var in $*; do
593         [ $var = $value ] && return 0
594     done
595     return 1
596 }
597
598 do_check_deps(){
599     for cfg; do
600         cfg="${cfg#!}"
601         enabled ${cfg}_checking && die "Circular dependency for $cfg."
602         disabled ${cfg}_checking && continue
603         enable ${cfg}_checking
604         append allopts $cfg
605
606         eval dep_all="\$${cfg}_deps"
607         eval dep_any="\$${cfg}_deps_any"
608         eval dep_sel="\$${cfg}_select"
609         eval dep_sgs="\$${cfg}_suggest"
610         eval dep_ifa="\$${cfg}_if"
611         eval dep_ifn="\$${cfg}_if_any"
612
613         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
614         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
615         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
616
617         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
618         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
619         enabled_all  $dep_all || disable $cfg
620         enabled_any  $dep_any || disable $cfg
621         disabled_any $dep_sel && disable $cfg
622
623         if enabled $cfg; then
624             enable_deep $dep_sel
625             enable_deep_weak $dep_sgs
626         fi
627
628         disable ${cfg}_checking
629     done
630 }
631
632 check_deps(){
633     unset allopts
634
635     do_check_deps "$@"
636
637     for cfg in $allopts; do
638         enabled $cfg || continue
639         eval dep_extralibs="\$${cfg}_extralibs"
640         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
641     done
642 }
643
644 print_config(){
645     pfx=$1
646     files=$2
647     shift 2
648     map 'eval echo "$v \${$v:-no}"' "$@" |
649     awk "BEGIN { split(\"$files\", files) }
650         {
651             c = \"$pfx\" toupper(\$1);
652             v = \$2;
653             sub(/yes/, 1, v);
654             sub(/no/,  0, v);
655             for (f in files) {
656                 file = files[f];
657                 if (file ~ /\\.h\$/) {
658                     printf(\"#define %s %d\\n\", c, v) >>file;
659                 } else if (file ~ /\\.asm\$/) {
660                     printf(\"%%define %s %d\\n\", c, v) >>file;
661                 } else if (file ~ /\\.mak\$/) {
662                     n = -v ? \"\" : \"!\";
663                     printf(\"%s%s=yes\\n\", n, c) >>file;
664                 }
665             }
666         }"
667 }
668
669 print_enabled(){
670     suf=$1
671     shift
672     for v; do
673         enabled $v && printf "%s\n" ${v%$suf}
674     done
675 }
676
677 append(){
678     var=$1
679     shift
680     eval "$var=\"\$$var $*\""
681 }
682
683 prepend(){
684     var=$1
685     shift
686     eval "$var=\"$* \$$var\""
687 }
688
689 unique(){
690     var=$1
691     uniq_list=""
692     for tok in $(eval echo \$$var); do
693         uniq_list="$(filter_out $tok $uniq_list) $tok"
694     done
695     eval "$var=\"${uniq_list}\""
696 }
697
698 add_cppflags(){
699     append CPPFLAGS "$@"
700 }
701
702 add_cflags(){
703     append CFLAGS $($cflags_filter "$@")
704 }
705
706 add_asflags(){
707     append ASFLAGS $($asflags_filter "$@")
708 }
709
710 add_objcflags(){
711     append OBJCFLAGS $($objcflags_filter "$@")
712 }
713
714 add_ldflags(){
715     append LDFLAGS $($ldflags_filter "$@")
716 }
717
718 add_ldexeflags(){
719     append LDEXEFLAGS $($ldflags_filter "$@")
720 }
721
722 add_stripflags(){
723     append STRIPFLAGS "$@"
724 }
725
726 add_extralibs(){
727     prepend extralibs $($ldflags_filter "$@")
728 }
729
730 add_host_cppflags(){
731     append host_cppflags "$@"
732 }
733
734 add_host_cflags(){
735     append host_cflags $($host_cflags_filter "$@")
736 }
737
738 add_host_ldflags(){
739     append host_ldflags $($host_ldflags_filter "$@")
740 }
741
742 add_compat(){
743     append compat_objs $1
744     shift
745     map 'add_cppflags -D$v' "$@"
746 }
747
748 check_cmd(){
749     log "$@"
750     "$@" >> $logfile 2>&1
751 }
752
753 cc_o(){
754     eval printf '%s\\n' $CC_O
755 }
756
757 cc_e(){
758     eval printf '%s\\n' $CC_E
759 }
760
761 check_cc(){
762     log check_cc "$@"
763     cat > $TMPC
764     log_file $TMPC
765     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
766 }
767
768 check_objcc(){
769     log check_objcc "$@"
770     cat > $TMPC
771     log_file $TMPC
772     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
773 }
774
775 check_cpp(){
776     log check_cpp "$@"
777     cat > $TMPC
778     log_file $TMPC
779     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
780 }
781
782 as_o(){
783     eval printf '%s\\n' $AS_O
784 }
785
786 check_as(){
787     log check_as "$@"
788     cat > $TMPS
789     log_file $TMPS
790     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
791 }
792
793 check_inline_asm(){
794     log check_inline_asm "$@"
795     name="$1"
796     code="$2"
797     shift 2
798     disable $name
799     check_cc "$@" <<EOF && enable $name
800 void foo(void){ __asm__ volatile($code); }
801 EOF
802 }
803
804 check_insn(){
805     log check_insn "$@"
806     check_inline_asm ${1}_inline "\"$2\""
807     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
808 }
809
810 check_yasm(){
811     log check_yasm "$@"
812     echo "$1" > $TMPS
813     log_file $TMPS
814     shift 1
815     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
816 }
817
818 ld_o(){
819     eval printf '%s\\n' $LD_O
820 }
821
822 check_ld(){
823     log check_ld "$@"
824     flags=$(filter_out '-l*' "$@")
825     libs=$(filter '-l*' "$@")
826     check_cc $($cflags_filter $flags) || return
827     flags=$($ldflags_filter $flags)
828     libs=$($ldflags_filter $libs)
829     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
830 }
831
832 print_include(){
833     hdr=$1
834     test "${hdr%.h}" = "${hdr}" &&
835         echo "#include $hdr"    ||
836         echo "#include <$hdr>"
837 }
838
839 check_code(){
840     log check_code "$@"
841     check=$1
842     headers=$2
843     code=$3
844     shift 3
845     {
846         for hdr in $headers; do
847             print_include $hdr
848         done
849         echo "int main(void) { $code; return 0; }"
850     } | check_$check "$@"
851 }
852
853 check_cppflags(){
854     log check_cppflags "$@"
855     check_cc "$@" <<EOF && append CPPFLAGS "$@"
856 int x;
857 EOF
858 }
859
860 test_cflags(){
861     log test_cflags "$@"
862     set -- $($cflags_filter "$@")
863     check_cc "$@" <<EOF
864 int x;
865 EOF
866 }
867
868 check_cflags(){
869     log check_cflags "$@"
870     test_cflags "$@" && add_cflags "$@"
871 }
872
873 test_objcflags(){
874     log test_cflags "$@"
875     set -- $($cflags_filter "$@")
876     check_objcc "$@" <<EOF
877 int x;
878 EOF
879 }
880
881 check_objcflags(){
882     log check_cflags "$@"
883     test_objcflags "$@" && add_objcflags "$@"
884 }
885
886 test_ldflags(){
887     log test_ldflags "$@"
888     check_ld "$@" <<EOF
889 int main(void){ return 0; }
890 EOF
891 }
892
893 check_ldflags(){
894     log check_ldflags "$@"
895     test_ldflags "$@" && add_ldflags "$@"
896 }
897
898 test_stripflags(){
899     log test_stripflags "$@"
900     # call check_cc to get a fresh TMPO
901     check_cc <<EOF
902 int main(void) { return 0; }
903 EOF
904     check_cmd $strip $STRIPFLAGS "$@" $TMPO
905 }
906
907 check_stripflags(){
908     log check_stripflags "$@"
909     test_stripflags "$@" && add_stripflags "$@"
910 }
911
912 check_header(){
913     log check_header "$@"
914     header=$1
915     shift
916     disable_safe $header
917     check_cpp "$@" <<EOF && enable_safe $header
918 #include <$header>
919 int x;
920 EOF
921 }
922
923 check_func(){
924     log check_func "$@"
925     func=$1
926     shift
927     disable $func
928     check_ld "$@" <<EOF && enable $func
929 extern int $func();
930 int main(void){ $func(); }
931 EOF
932 }
933
934 check_mathfunc(){
935     log check_mathfunc "$@"
936     func=$1
937     narg=$2
938     shift 2
939     test $narg = 2 && args="f, g" || args="f"
940     disable $func
941     check_ld "$@" <<EOF && enable $func
942 #include <math.h>
943 float foo(float f, float g) { return $func($args); }
944 int main(void){ return 0; }
945 EOF
946 }
947
948 check_func_headers(){
949     log check_func_headers "$@"
950     headers=$1
951     funcs=$2
952     shift 2
953     {
954         for hdr in $headers; do
955             print_include $hdr
956         done
957         for func in $funcs; do
958             echo "long check_$func(void) { return (long) $func; }"
959         done
960         echo "int main(void) { return 0; }"
961     } | check_ld "$@" && enable $funcs && enable_safe $headers
962 }
963
964 check_cpp_condition(){
965     log check_cpp_condition "$@"
966     header=$1
967     condition=$2
968     shift 2
969     check_cpp "$@" <<EOF
970 #include <$header>
971 #if !($condition)
972 #error "unsatisfied condition: $condition"
973 #endif
974 EOF
975 }
976
977 check_lib(){
978     log check_lib "$@"
979     header="$1"
980     func="$2"
981     shift 2
982     check_header $header && check_func $func "$@" && add_extralibs "$@"
983 }
984
985 check_lib2(){
986     log check_lib2 "$@"
987     headers="$1"
988     funcs="$2"
989     shift 2
990     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
991 }
992
993 check_pkg_config(){
994     log check_pkg_config "$@"
995     pkg="$1"
996     headers="$2"
997     funcs="$3"
998     shift 3
999     check_cmd $pkg_config --exists --print-errors $pkg || return
1000     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1001     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1002     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1003         set_safe "${pkg}_cflags" $pkg_cflags   &&
1004         set_safe "${pkg}_libs"   $pkg_libs
1005 }
1006
1007 check_exec(){
1008     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1009 }
1010
1011 check_exec_crash(){
1012     code=$(cat)
1013
1014     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1015     # are safe but may not be available everywhere.  Thus we use
1016     # raise(SIGTERM) instead.  The check is run in a subshell so we
1017     # can redirect the "Terminated" message from the shell.  SIGBUS
1018     # is not defined by standard C so it is used conditionally.
1019
1020     (check_exec "$@") >> $logfile 2>&1 <<EOF
1021 #include <signal.h>
1022 static void sighandler(int sig){
1023     raise(SIGTERM);
1024 }
1025 int foo(void){
1026     $code
1027 }
1028 int (*func_ptr)(void) = foo;
1029 int main(void){
1030     signal(SIGILL, sighandler);
1031     signal(SIGFPE, sighandler);
1032     signal(SIGSEGV, sighandler);
1033 #ifdef SIGBUS
1034     signal(SIGBUS, sighandler);
1035 #endif
1036     return func_ptr();
1037 }
1038 EOF
1039 }
1040
1041 check_type(){
1042     log check_type "$@"
1043     headers=$1
1044     type=$2
1045     shift 2
1046     disable_safe "$type"
1047     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1048 }
1049
1050 check_struct(){
1051     log check_struct "$@"
1052     headers=$1
1053     struct=$2
1054     member=$3
1055     shift 3
1056     disable_safe "${struct}_${member}"
1057     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1058         enable_safe "${struct}_${member}"
1059 }
1060
1061 check_builtin(){
1062     log check_builtin "$@"
1063     name=$1
1064     headers=$2
1065     builtin=$3
1066     shift 3
1067     disable "$name"
1068     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1069 }
1070
1071 check_compile_assert(){
1072     log check_compile_assert "$@"
1073     name=$1
1074     headers=$2
1075     condition=$3
1076     shift 3
1077     disable "$name"
1078     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1079 }
1080
1081 require(){
1082     name="$1"
1083     header="$2"
1084     func="$3"
1085     shift 3
1086     check_lib $header $func "$@" || die "ERROR: $name not found"
1087 }
1088
1089 require2(){
1090     name="$1"
1091     headers="$2"
1092     func="$3"
1093     shift 3
1094     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1095 }
1096
1097 require_pkg_config(){
1098     pkg="$1"
1099     check_pkg_config "$@" || die "ERROR: $pkg not found"
1100     add_cflags    $(get_safe "${pkg}_cflags")
1101     add_extralibs $(get_safe "${pkg}_libs")
1102 }
1103
1104 hostcc_e(){
1105     eval printf '%s\\n' $HOSTCC_E
1106 }
1107
1108 hostcc_o(){
1109     eval printf '%s\\n' $HOSTCC_O
1110 }
1111
1112 check_host_cc(){
1113     log check_host_cc "$@"
1114     cat > $TMPC
1115     log_file $TMPC
1116     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1117 }
1118
1119 check_host_cpp(){
1120     log check_host_cpp "$@"
1121     cat > $TMPC
1122     log_file $TMPC
1123     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1124 }
1125
1126 check_host_cppflags(){
1127     log check_host_cppflags "$@"
1128     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1129 int x;
1130 EOF
1131 }
1132
1133 check_host_cflags(){
1134     log check_host_cflags "$@"
1135     set -- $($host_cflags_filter "$@")
1136     check_host_cc "$@" <<EOF && append host_cflags "$@"
1137 int x;
1138 EOF
1139 }
1140
1141 check_host_cpp_condition(){
1142     log check_host_cpp_condition "$@"
1143     header=$1
1144     condition=$2
1145     shift 2
1146     check_host_cpp "$@" <<EOF
1147 #include <$header>
1148 #if !($condition)
1149 #error "unsatisfied condition: $condition"
1150 #endif
1151 EOF
1152 }
1153
1154 apply(){
1155     file=$1
1156     shift
1157     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1158 }
1159
1160 cp_if_changed(){
1161     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1162     mkdir -p "$(dirname $2)"
1163     $cp_f "$1" "$2"
1164 }
1165
1166 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1167 # system-dependent things.
1168
1169 AVCODEC_COMPONENTS="
1170     bsfs
1171     decoders
1172     encoders
1173     hwaccels
1174     parsers
1175 "
1176
1177 AVDEVICE_COMPONENTS="
1178     indevs
1179     outdevs
1180 "
1181 AVFILTER_COMPONENTS="
1182     filters
1183 "
1184 AVFORMAT_COMPONENTS="
1185     demuxers
1186     muxers
1187     protocols
1188 "
1189
1190 AVRESAMPLE_COMPONENTS=""
1191 AVUTIL_COMPONENTS=""
1192
1193 COMPONENT_LIST="
1194     $AVCODEC_COMPONENTS
1195     $AVDEVICE_COMPONENTS
1196     $AVFILTER_COMPONENTS
1197     $AVFORMAT_COMPONENTS
1198     $AVRESAMPLE_COMPONENTS
1199     $AVUTIL_COMPONENTS
1200 "
1201
1202 EXAMPLE_LIST="
1203     avcodec_example
1204     filter_audio_example
1205     metadata_example
1206     output_example
1207     qsvdec_example
1208     transcode_aac_example
1209 "
1210
1211 EXTERNAL_LIBRARY_LIST="
1212     avisynth
1213     bzlib
1214     frei0r
1215     gnutls
1216     libbs2b
1217     libcdio
1218     libdc1394
1219     libdcadec
1220     libfaac
1221     libfdk_aac
1222     libfontconfig
1223     libfreetype
1224     libgsm
1225     libilbc
1226     libkvazaar
1227     libmp3lame
1228     libnpp
1229     libopencore_amrnb
1230     libopencore_amrwb
1231     libopencv
1232     libopenh264
1233     libopenjpeg
1234     libopus
1235     libpulse
1236     librtmp
1237     libschroedinger
1238     libsnappy
1239     libspeex
1240     libtheora
1241     libtwolame
1242     libvo_aacenc
1243     libvo_amrwbenc
1244     libvorbis
1245     libvpx
1246     libwavpack
1247     libwebp
1248     libx264
1249     libx265
1250     libxavs
1251     libxcb
1252     libxcb_shm
1253     libxcb_xfixes
1254     libxvid
1255     openssl
1256     x11grab
1257     zlib
1258 "
1259
1260 FEATURE_LIST="
1261     gray
1262     hardcoded_tables
1263     omx_rpi
1264     runtime_cpudetect
1265     safe_bitstream_reader
1266     shared
1267     small
1268     sram
1269     static
1270     swscale_alpha
1271 "
1272
1273 HW_CODECS_LIST="
1274     cuda
1275     libmfx
1276     mmal
1277     nvenc
1278     omx
1279 "
1280
1281 HWACCEL_LIST="
1282     d3d11va
1283     dxva2
1284     vaapi
1285     vda
1286     vdpau
1287 "
1288
1289 LIBRARY_LIST="
1290     avcodec
1291     avdevice
1292     avfilter
1293     avformat
1294     avresample
1295     avutil
1296     swscale
1297 "
1298
1299 LICENSE_LIST="
1300     gpl
1301     nonfree
1302     version3
1303 "
1304
1305 PROGRAM_LIST="
1306     avconv
1307     avplay
1308     avprobe
1309 "
1310
1311 SUBSYSTEM_LIST="
1312     dct
1313     doc
1314     error_resilience
1315     faan
1316     fft
1317     lsp
1318     lzo
1319     mdct
1320     network
1321     rdft
1322 "
1323
1324 CONFIG_LIST="
1325     $COMPONENT_LIST
1326     $EXAMPLE_LIST
1327     $EXTERNAL_LIBRARY_LIST
1328     $FEATURE_LIST
1329     $HW_CODECS_LIST
1330     $HWACCEL_LIST
1331     $LICENSE_LIST
1332     $LIBRARY_LIST
1333     $PROGRAM_LIST
1334     $SUBSYSTEM_LIST
1335     memalign_hack
1336     neon_clobber_test
1337     pic
1338     pod2man
1339     texi2html
1340     thumb
1341     valgrind_backtrace
1342     xmm_clobber_test
1343 "
1344
1345 THREADS_LIST="
1346     pthreads
1347     w32threads
1348 "
1349
1350 ATOMICS_LIST="
1351     atomics_gcc
1352     atomics_suncc
1353     atomics_win32
1354 "
1355
1356 ARCH_LIST="
1357     aarch64
1358     alpha
1359     arm
1360     avr32
1361     avr32_ap
1362     avr32_uc
1363     bfin
1364     ia64
1365     m68k
1366     mips
1367     mips64
1368     parisc
1369     ppc
1370     ppc64
1371     s390
1372     sh4
1373     sparc
1374     sparc64
1375     tilegx
1376     tilepro
1377     tomi
1378     x86
1379     x86_32
1380     x86_64
1381 "
1382
1383 ARCH_EXT_LIST_ARM="
1384     armv5te
1385     armv6
1386     armv6t2
1387     armv8
1388     neon
1389     vfp
1390     vfpv3
1391 "
1392
1393 ARCH_EXT_LIST_X86_SIMD="
1394     amd3dnow
1395     amd3dnowext
1396     avx
1397     avx2
1398     fma3
1399     fma4
1400     mmx
1401     mmxext
1402     sse
1403     sse2
1404     sse3
1405     sse4
1406     sse42
1407     ssse3
1408     xop
1409 "
1410
1411 ARCH_EXT_LIST_PPC="
1412     altivec
1413     dcbzl
1414     ldbrx
1415     power8
1416     ppc4xx
1417     vsx
1418 "
1419
1420 ARCH_EXT_LIST_X86="
1421     $ARCH_EXT_LIST_X86_SIMD
1422     cpunop
1423     i686
1424 "
1425
1426 ARCH_EXT_LIST_MIPS="
1427     loongson
1428     mips32r1
1429     mips64r1
1430     mips32r2
1431     mips64r2
1432     mips32r6
1433     mips64r6
1434 "
1435
1436 ARCH_EXT_LIST="
1437     $ARCH_EXT_LIST_ARM
1438     $ARCH_EXT_LIST_MIPS
1439     $ARCH_EXT_LIST_PPC
1440     $ARCH_EXT_LIST_X86
1441     vis
1442 "
1443
1444 ARCH_FEATURES="
1445     aligned_stack
1446     fast_64bit
1447     fast_clz
1448     fast_cmov
1449     local_aligned_8
1450     local_aligned_16
1451     simd_align_16
1452 "
1453
1454 BUILTIN_LIST="
1455     atomic_cas_ptr
1456     machine_rw_barrier
1457     MemoryBarrier
1458     mm_empty
1459     rdtsc
1460     sem_timedwait
1461     sync_val_compare_and_swap
1462 "
1463 HAVE_LIST_CMDLINE="
1464     inline_asm
1465     symver
1466     yasm
1467 "
1468
1469 HAVE_LIST_PUB="
1470     bigendian
1471     fast_unaligned
1472 "
1473
1474 HEADERS_LIST="
1475     AVFoundation_AVFoundation_h
1476     alsa_asoundlib_h
1477     altivec_h
1478     arpa_inet_h
1479     cdio_paranoia_h
1480     cdio_paranoia_paranoia_h
1481     dispatch_dispatch_h
1482     dev_bktr_ioctl_bt848_h
1483     dev_bktr_ioctl_meteor_h
1484     dev_ic_bt8xx_h
1485     dev_video_bktr_ioctl_bt848_h
1486     dev_video_meteor_ioctl_meteor_h
1487     direct_h
1488     dlfcn_h
1489     d3d11_h
1490     dxva_h
1491     gsm_h
1492     io_h
1493     mach_mach_time_h
1494     machine_ioctl_bt848_h
1495     machine_ioctl_meteor_h
1496     malloc_h
1497     poll_h
1498     sndio_h
1499     soundcard_h
1500     sys_mman_h
1501     sys_param_h
1502     sys_resource_h
1503     sys_select_h
1504     sys_soundcard_h
1505     sys_time_h
1506     sys_un_h
1507     sys_videoio_h
1508     unistd_h
1509     valgrind_valgrind_h
1510     windows_h
1511     winsock2_h
1512 "
1513
1514 INTRINSICS_LIST="
1515     intrinsics_neon
1516 "
1517
1518 MATH_FUNCS="
1519     atanf
1520     atan2f
1521     cbrtf
1522     cosf
1523     exp2
1524     exp2f
1525     expf
1526     isinf
1527     isnan
1528     ldexpf
1529     llrint
1530     llrintf
1531     log2
1532     log2f
1533     log10f
1534     lrint
1535     lrintf
1536     powf
1537     rint
1538     round
1539     roundf
1540     sinf
1541     trunc
1542     truncf
1543 "
1544
1545 SYSTEM_FUNCS="
1546     aligned_malloc
1547     clock_gettime
1548     closesocket
1549     CommandLineToArgvW
1550     CoTaskMemFree
1551     CryptGenRandom
1552     dlopen
1553     fcntl
1554     flt_lim
1555     fork
1556     getaddrinfo
1557     gethrtime
1558     getopt
1559     GetProcessAffinityMask
1560     GetProcessMemoryInfo
1561     GetProcessTimes
1562     getrusage
1563     GetSystemTimeAsFileTime
1564     gettimeofday
1565     gmtime_r
1566     inet_aton
1567     isatty
1568     jack_port_get_latency_range
1569     LoadLibrary
1570     localtime_r
1571     mach_absolute_time
1572     MapViewOfFile
1573     memalign
1574     mkstemp
1575     mmap
1576     mprotect
1577     nanosleep
1578     posix_memalign
1579     sched_getaffinity
1580     SetConsoleTextAttribute
1581     setmode
1582     setrlimit
1583     Sleep
1584     strerror_r
1585     sysconf
1586     sysctl
1587     usleep
1588     VirtualAlloc
1589 "
1590
1591 TOOLCHAIN_FEATURES="
1592     as_dn_directive
1593     as_func
1594     as_object_arch
1595     asm_mod_q
1596     attribute_may_alias
1597     attribute_packed
1598     ebp_available
1599     ebx_available
1600     gnu_as
1601     ibm_asm
1602     inline_asm_labels
1603     pragma_deprecated
1604     symver_asm_label
1605     symver_gnu_asm
1606     vfp_args
1607     xform_asm
1608     xmm_clobbers
1609 "
1610
1611 TYPES_LIST="
1612     CONDITION_VARIABLE_Ptr
1613     socklen_t
1614     struct_addrinfo
1615     struct_group_source_req
1616     struct_ip_mreq_source
1617     struct_ipv6_mreq
1618     struct_pollfd
1619     struct_rusage_ru_maxrss
1620     struct_sockaddr_in6
1621     struct_sockaddr_sa_len
1622     struct_sockaddr_storage
1623     struct_v4l2_frmivalenum_discrete
1624 "
1625
1626 HAVE_LIST="
1627     $ARCH_EXT_LIST
1628     $(add_suffix _external $ARCH_EXT_LIST)
1629     $(add_suffix _inline   $ARCH_EXT_LIST)
1630     $ARCH_FEATURES
1631     $ATOMICS_LIST
1632     $BUILTIN_LIST
1633     $HAVE_LIST_CMDLINE
1634     $HAVE_LIST_PUB
1635     $HEADERS_LIST
1636     $INTRINSICS_LIST
1637     $MATH_FUNCS
1638     $SYSTEM_FUNCS
1639     $THREADS_LIST
1640     $TOOLCHAIN_FEATURES
1641     $TYPES_LIST
1642     atomics_native
1643     dos_paths
1644     dxva2_lib
1645     libc_msvcrt
1646     libdc1394_1
1647     libdc1394_2
1648     sdl
1649     section_data_rel_ro
1650     threads
1651     vaapi_drm
1652     vaapi_x11
1653     vdpau_x11
1654     xlib
1655 "
1656
1657 # options emitted with CONFIG_ prefix but not available on the command line
1658 CONFIG_EXTRA="
1659     aandcttables
1660     ac3dsp
1661     audio_frame_queue
1662     audiodsp
1663     blockdsp
1664     bswapdsp
1665     cabac
1666     dirac_parse
1667     dvprofile
1668     faandct
1669     faanidct
1670     fdctdsp
1671     flacdsp
1672     fmtconvert
1673     g722dsp
1674     gcrypt
1675     gmp
1676     golomb
1677     gplv3
1678     h263dsp
1679     h264chroma
1680     h264dsp
1681     h264pred
1682     h264qpel
1683     hpeldsp
1684     huffman
1685     huffyuvdsp
1686     huffyuvencdsp
1687     idctdsp
1688     iirfilter
1689     imdct15
1690     intrax8
1691     iso_media
1692     ividsp
1693     jpegtables
1694     libx262
1695     lgplv3
1696     lpc
1697     lzf
1698     me_cmp
1699     mpeg_er
1700     mpegaudio
1701     mpegaudiodsp
1702     mpegvideo
1703     mpegvideoenc
1704     mss34dsp
1705     pixblockdsp
1706     qpeldsp
1707     qsv
1708     qsvdec
1709     qsvenc
1710     rangecoder
1711     riffdec
1712     riffenc
1713     rtpdec
1714     rtpenc_chain
1715     rv34dsp
1716     sinewin
1717     snappy
1718     srtp
1719     startcode
1720     texturedsp
1721     texturedspenc
1722     tpeldsp
1723     vaapi_encode
1724     vc1dsp
1725     videodsp
1726     vp3dsp
1727     vp56dsp
1728     vp8dsp
1729     wma_freqs
1730     wmv2dsp
1731 "
1732
1733 CMDLINE_SELECT="
1734     $ARCH_EXT_LIST
1735     $CONFIG_LIST
1736     $HAVE_LIST_CMDLINE
1737     $THREADS_LIST
1738     asm
1739     cross_compile
1740     debug
1741     extra_warnings
1742     logging
1743     lto
1744     optimizations
1745     rpath
1746 "
1747
1748 PATHS_LIST="
1749     bindir
1750     datadir
1751     docdir
1752     incdir
1753     libdir
1754     mandir
1755     prefix
1756     shlibdir
1757 "
1758
1759 CMDLINE_SET="
1760     $PATHS_LIST
1761     ar
1762     arch
1763     as
1764     build_suffix
1765     cc
1766     objcc
1767     cpu
1768     cross_prefix
1769     custom_allocator
1770     dep_cc
1771     env
1772     extra_version
1773     host_cc
1774     host_cflags
1775     host_ld
1776     host_ldflags
1777     host_libs
1778     host_os
1779     ld
1780     logfile
1781     malloc_prefix
1782     nm
1783     optflags
1784     pkg_config
1785     pkg_config_flags
1786     random_seed
1787     samples
1788     sysinclude
1789     sysroot
1790     target_exec
1791     target_os
1792     target_path
1793     target_samples
1794     toolchain
1795 "
1796
1797 CMDLINE_APPEND="
1798     extra_cflags
1799     extra_objcflags
1800     host_cppflags
1801 "
1802
1803 # code dependency declarations
1804
1805 # architecture extensions
1806
1807 armv5te_deps="arm"
1808 armv6_deps="arm"
1809 armv6t2_deps="arm"
1810 armv8_deps="aarch64"
1811 neon_deps_any="aarch64 arm"
1812 intrinsics_neon_deps="neon"
1813 vfp_deps_any="aarch64 arm"
1814 vfpv3_deps="vfp"
1815
1816 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1817
1818 altivec_deps="ppc"
1819 ppc4xx_deps="ppc"
1820 vsx_deps="altivec"
1821 power8_deps="vsx"
1822
1823 cpunop_deps="i686"
1824 x86_64_select="i686"
1825 x86_64_suggest="fast_cmov"
1826
1827 amd3dnow_deps="mmx"
1828 amd3dnowext_deps="amd3dnow"
1829 i686_deps="x86"
1830 mmx_deps="x86"
1831 mmxext_deps="mmx"
1832 sse_deps="mmxext"
1833 sse2_deps="sse"
1834 sse3_deps="sse2"
1835 ssse3_deps="sse3"
1836 sse4_deps="ssse3"
1837 sse42_deps="sse4"
1838 avx_deps="sse42"
1839 xop_deps="avx"
1840 fma3_deps="avx"
1841 fma4_deps="avx"
1842 avx2_deps="avx"
1843
1844 mmx_external_deps="yasm"
1845 mmx_inline_deps="inline_asm"
1846 mmx_suggest="mmx_external mmx_inline"
1847
1848 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1849     eval dep=\$${ext}_deps
1850     eval ${ext}_external_deps='"${dep}_external"'
1851     eval ${ext}_inline_deps='"${dep}_inline"'
1852     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1853 done
1854
1855 aligned_stack_if_any="aarch64 ppc x86"
1856 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1857 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1858 fast_unaligned_if_any="aarch64 ppc x86"
1859 simd_align_16_if_any="altivec neon sse"
1860
1861 # system capabilities
1862 symver_if_any="symver_asm_label symver_gnu_asm"
1863 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1864
1865 # threading support
1866 atomics_gcc_if="sync_val_compare_and_swap"
1867 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1868 atomics_win32_if="MemoryBarrier"
1869 atomics_native_if_any="$ATOMICS_LIST"
1870 w32threads_deps="atomics_native"
1871 threads_if_any="$THREADS_LIST"
1872
1873 # subsystems
1874 dct_select="rdft"
1875 dirac_parse_select="golomb"
1876 error_resilience_select="me_cmp"
1877 faandct_deps="faan fdctdsp"
1878 faanidct_deps="faan idctdsp"
1879 h264dsp_select="startcode"
1880 intrax8_select="blockdsp idctdsp"
1881 mdct_select="fft"
1882 rdft_select="fft"
1883 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1884 mpeg_er_select="error_resilience"
1885 mpegaudio_select="mpegaudiodsp"
1886 mpegaudiodsp_select="dct"
1887 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1888 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1889 vc1dsp_select="h264chroma qpeldsp startcode"
1890
1891 # decoders / encoders
1892 aac_decoder_select="imdct15 mdct sinewin"
1893 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1894 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1895 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1896 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1897 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1898 adpcm_g722_decoder_select="g722dsp"
1899 adpcm_g722_encoder_select="g722dsp"
1900 aic_decoder_select="golomb idctdsp"
1901 alac_encoder_select="lpc"
1902 als_decoder_select="bswapdsp"
1903 amrnb_decoder_select="lsp"
1904 amrwb_decoder_select="lsp"
1905 amv_decoder_select="sp5x_decoder"
1906 ape_decoder_select="bswapdsp"
1907 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1908 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1909 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1910 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1911 atrac1_decoder_select="mdct sinewin"
1912 atrac3_decoder_select="mdct"
1913 atrac3p_decoder_select="mdct sinewin"
1914 bink_decoder_select="blockdsp hpeldsp"
1915 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1916 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1917 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1918 cllc_decoder_select="bswapdsp"
1919 comfortnoise_encoder_select="lpc"
1920 cook_decoder_select="audiodsp mdct sinewin"
1921 cscd_decoder_select="lzo"
1922 cscd_decoder_suggest="zlib"
1923 dca_decoder_select="fmtconvert mdct"
1924 dds_decoder_select="texturedsp"
1925 dnxhd_decoder_select="blockdsp idctdsp"
1926 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1927 dvvideo_decoder_select="dvprofile idctdsp"
1928 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1929 dxa_decoder_deps="zlib"
1930 dxv_decoder_select="lzf texturedsp"
1931 eac3_decoder_select="ac3_decoder"
1932 eac3_encoder_select="ac3_encoder"
1933 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1934 eatgq_decoder_select="aandcttables idctdsp"
1935 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
1936 exr_decoder_deps="zlib"
1937 ffv1_decoder_select="golomb rangecoder"
1938 ffv1_encoder_select="rangecoder"
1939 ffvhuff_decoder_select="huffyuv_decoder"
1940 ffvhuff_encoder_select="huffyuv_encoder"
1941 fic_decoder_select="golomb"
1942 flac_decoder_select="flacdsp golomb"
1943 flac_encoder_select="bswapdsp flacdsp golomb lpc"
1944 flashsv_decoder_deps="zlib"
1945 flashsv_encoder_deps="zlib"
1946 flashsv2_decoder_deps="zlib"
1947 flv_decoder_select="h263_decoder"
1948 flv_encoder_select="h263_encoder"
1949 fourxm_decoder_select="blockdsp bswapdsp"
1950 fraps_decoder_select="bswapdsp huffman"
1951 g2m_decoder_deps="zlib"
1952 g2m_decoder_select="blockdsp idctdsp jpegtables"
1953 h261_decoder_select="mpeg_er mpegvideo"
1954 h261_encoder_select="aandcttables mpegvideoenc"
1955 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1956 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1957 h263i_decoder_select="h263_decoder"
1958 h263p_encoder_select="h263_encoder"
1959 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
1960 h264_decoder_suggest="error_resilience"
1961 hap_decoder_select="snappy texturedsp"
1962 hap_encoder_deps="libsnappy"
1963 hap_encoder_select="texturedspenc"
1964 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1965 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1966 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1967 iac_decoder_select="imc_decoder"
1968 imc_decoder_select="bswapdsp fft mdct sinewin"
1969 indeo3_decoder_select="hpeldsp"
1970 indeo4_decoder_select="ividsp"
1971 indeo5_decoder_select="ividsp"
1972 interplay_video_decoder_select="hpeldsp"
1973 jpegls_decoder_select="golomb mjpeg_decoder"
1974 jpegls_encoder_select="golomb"
1975 jv_decoder_select="blockdsp"
1976 lagarith_decoder_select="huffyuvdsp"
1977 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
1978 loco_decoder_select="golomb"
1979 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1980 metasound_decoder_select="lsp mdct sinewin"
1981 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1982 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
1983 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
1984 mjpegb_decoder_select="mjpeg_decoder"
1985 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
1986 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
1987 mlp_decoder_select="mlp_parser"
1988 motionpixels_decoder_select="bswapdsp"
1989 mp1_decoder_select="mpegaudio"
1990 mp1float_decoder_select="mpegaudio"
1991 mp2_decoder_select="mpegaudio"
1992 mp2float_decoder_select="mpegaudio"
1993 mp3_decoder_select="mpegaudio"
1994 mp3adu_decoder_select="mpegaudio"
1995 mp3adufloat_decoder_select="mpegaudio"
1996 mp3float_decoder_select="mpegaudio"
1997 mp3on4_decoder_select="mpegaudio"
1998 mp3on4float_decoder_select="mpegaudio"
1999 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2000 mpc8_decoder_select="mpegaudiodsp"
2001 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2002 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2003 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2004 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2005 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2006 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2007 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2008 mpeg4_encoder_select="h263_encoder"
2009 msa1_decoder_select="mss34dsp"
2010 msmpeg4v1_decoder_select="h263_decoder"
2011 msmpeg4v2_decoder_select="h263_decoder"
2012 msmpeg4v2_encoder_select="h263_encoder"
2013 msmpeg4v3_decoder_select="h263_decoder"
2014 msmpeg4v3_encoder_select="h263_encoder"
2015 mss2_decoder_select="error_resilience mpeg_er mpegvideo vc1_decoder"
2016 mts2_decoder_select="mss34dsp"
2017 mxpeg_decoder_select="mjpeg_decoder"
2018 nellymoser_decoder_select="mdct sinewin"
2019 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2020 nuv_decoder_select="idctdsp lzo"
2021 on2avc_decoder_select="mdct"
2022 opus_decoder_deps="avresample"
2023 opus_decoder_select="imdct15"
2024 png_decoder_deps="zlib"
2025 png_encoder_deps="zlib"
2026 png_encoder_select="huffyuvencdsp"
2027 prores_decoder_select="idctdsp"
2028 prores_encoder_select="fdctdsp"
2029 qcelp_decoder_select="lsp"
2030 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2031 ra_144_encoder_select="audio_frame_queue lpc"
2032 ralf_decoder_select="golomb"
2033 rscc_decoder_deps="zlib"
2034 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2035 rv10_encoder_select="h263_encoder"
2036 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2037 rv20_encoder_select="h263_encoder"
2038 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2039 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2040 screenpresso_decoder_deps="zlib"
2041 shorten_decoder_select="golomb"
2042 sipr_decoder_select="lsp"
2043 sp5x_decoder_select="mjpeg_decoder"
2044 svq1_decoder_select="hpeldsp"
2045 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2046 svq3_decoder_select="golomb h264dsp h264pred hpeldsp tpeldsp videodsp"
2047 svq3_decoder_suggest="zlib"
2048 tak_decoder_select="audiodsp"
2049 tdsc_decoder_deps="zlib"
2050 tdsc_decoder_select="mjpeg_decoder"
2051 theora_decoder_select="vp3_decoder"
2052 thp_decoder_select="mjpeg_decoder"
2053 tiff_decoder_suggest="zlib"
2054 tiff_encoder_suggest="zlib"
2055 truehd_decoder_select="mlp_decoder"
2056 truemotion2_decoder_select="bswapdsp"
2057 truespeech_decoder_select="bswapdsp"
2058 tscc_decoder_deps="zlib"
2059 txd_decoder_select="texturedsp"
2060 twinvq_decoder_select="mdct lsp sinewin"
2061 utvideo_decoder_select="bswapdsp"
2062 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2063 vble_decoder_select="huffyuvdsp"
2064 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2065 vc1image_decoder_select="vc1_decoder"
2066 vorbis_decoder_select="mdct"
2067 vorbis_encoder_select="mdct"
2068 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2069 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2070 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2071 vp6a_decoder_select="vp6_decoder"
2072 vp6f_decoder_select="vp6_decoder"
2073 vp7_decoder_select="h264pred videodsp vp8dsp"
2074 vp8_decoder_select="h264pred videodsp vp8dsp"
2075 vp9_decoder_select="videodsp"
2076 webp_decoder_select="vp8_decoder"
2077 wmapro_decoder_select="mdct sinewin wma_freqs"
2078 wmav1_decoder_select="mdct sinewin wma_freqs"
2079 wmav1_encoder_select="mdct sinewin wma_freqs"
2080 wmav2_decoder_select="mdct sinewin wma_freqs"
2081 wmav2_encoder_select="mdct sinewin wma_freqs"
2082 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2083 wmv1_decoder_select="h263_decoder"
2084 wmv1_encoder_select="h263_encoder"
2085 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2086 wmv2_encoder_select="h263_encoder wmv2dsp"
2087 wmv3_decoder_select="vc1_decoder"
2088 wmv3image_decoder_select="wmv3_decoder"
2089 zerocodec_decoder_deps="zlib"
2090 zlib_decoder_deps="zlib"
2091 zlib_encoder_deps="zlib"
2092 zmbv_decoder_deps="zlib"
2093 zmbv_encoder_deps="zlib"
2094
2095 # hardware accelerators
2096 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2097 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2098 vaapi_deps="va_va_h"
2099 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2100 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2101 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2102
2103 h263_vaapi_hwaccel_deps="vaapi"
2104 h263_vaapi_hwaccel_select="h263_decoder"
2105 h264_d3d11va_hwaccel_deps="d3d11va"
2106 h264_d3d11va_hwaccel_select="h264_decoder"
2107 h264_dxva2_hwaccel_deps="dxva2"
2108 h264_dxva2_hwaccel_select="h264_decoder"
2109 h264_mmal_decoder_deps="mmal"
2110 h264_mmal_hwaccel_deps="mmal"
2111 h264_mmal_decoder_select="h264_decoder"
2112 h264_mmal_encoder_deps="mmal"
2113 h264_omx_encoder_deps="omx"
2114 h264_qsv_hwaccel_deps="libmfx"
2115 h264_vaapi_hwaccel_deps="vaapi"
2116 h264_vaapi_hwaccel_select="h264_decoder"
2117 h264_vda_hwaccel_deps="vda"
2118 h264_vda_hwaccel_select="h264_decoder"
2119 h264_vda_old_hwaccel_deps="vda"
2120 h264_vda_old_hwaccel_select="h264_decoder"
2121 h264_vdpau_hwaccel_deps="vdpau"
2122 h264_vdpau_hwaccel_select="h264_decoder"
2123 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2124 hevc_d3d11va_hwaccel_select="hevc_decoder"
2125 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2126 hevc_dxva2_hwaccel_select="hevc_decoder"
2127 hevc_qsv_hwaccel_deps="libmfx"
2128 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2129 hevc_vdpau_hwaccel_select="hevc_decoder"
2130 mpeg1_vdpau_hwaccel_deps="vdpau"
2131 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2132 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2133 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2134 mpeg2_dxva2_hwaccel_deps="dxva2"
2135 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2136 mpeg2_qsv_hwaccel_deps="libmfx"
2137 mpeg2_vaapi_hwaccel_deps="vaapi"
2138 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2139 mpeg2_vdpau_hwaccel_deps="vdpau"
2140 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2141 mpeg4_omx_encoder_deps="omx"
2142 mpeg4_vaapi_hwaccel_deps="vaapi"
2143 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2144 mpeg4_vdpau_hwaccel_deps="vdpau"
2145 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2146 vc1_d3d11va_hwaccel_deps="d3d11va"
2147 vc1_d3d11va_hwaccel_select="vc1_decoder"
2148 vc1_dxva2_hwaccel_deps="dxva2"
2149 vc1_dxva2_hwaccel_select="vc1_decoder"
2150 vc1_vaapi_hwaccel_deps="vaapi"
2151 vc1_vaapi_hwaccel_select="vc1_decoder"
2152 vc1_vdpau_hwaccel_deps="vdpau"
2153 vc1_vdpau_hwaccel_select="vc1_decoder"
2154 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2155 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2156 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2157 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2158
2159 # hardware-accelerated codecs
2160 nvenc_deps_any="dlopen LoadLibrary"
2161 nvenc_extralibs='$ldl'
2162 omx_deps="dlopen pthreads"
2163 omx_extralibs='$ldl'
2164 qsvdec_select="qsv"
2165 qsvenc_select="qsv"
2166 vaapi_encode_deps="vaapi"
2167
2168 hwupload_cuda_filter_deps="cuda"
2169 scale_npp_filter_deps="cuda libnpp"
2170
2171 h264_nvenc_encoder_deps="nvenc"
2172 h264_qsv_decoder_deps="libmfx"
2173 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2174 h264_qsv_encoder_deps="libmfx"
2175 h264_qsv_encoder_select="qsvenc"
2176 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2177 h264_vaapi_encoder_select="vaapi_encode golomb"
2178
2179 hevc_nvenc_encoder_deps="nvenc"
2180 hevc_qsv_decoder_deps="libmfx"
2181 hevc_qsv_encoder_deps="libmfx"
2182 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2183 hevc_qsv_encoder_select="qsvenc"
2184 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2185 hevc_vaapi_encoder_select="vaapi_encode golomb"
2186 mpeg2_qsv_decoder_deps="libmfx"
2187 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2188 mpeg2_qsv_encoder_deps="libmfx"
2189 mpeg2_qsv_encoder_select="qsvenc"
2190
2191 nvenc_h264_encoder_deps="nvenc"
2192 nvenc_hevc_encoder_deps="nvenc"
2193
2194 # parsers
2195 h264_parser_select="h264_decoder"
2196 hevc_parser_select="golomb"
2197 mpegvideo_parser_select="mpegvideo"
2198 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2199 vc1_parser_select="vc1dsp"
2200
2201 # bitstream_filters
2202 mjpeg2jpeg_bsf_select="jpegtables"
2203
2204 # external libraries
2205 libdcadec_decoder_deps="libdcadec"
2206 libfaac_encoder_deps="libfaac"
2207 libfaac_encoder_select="audio_frame_queue"
2208 libfdk_aac_decoder_deps="libfdk_aac"
2209 libfdk_aac_encoder_deps="libfdk_aac"
2210 libfdk_aac_encoder_select="audio_frame_queue"
2211 libgsm_decoder_deps="libgsm"
2212 libgsm_encoder_deps="libgsm"
2213 libgsm_ms_decoder_deps="libgsm"
2214 libgsm_ms_encoder_deps="libgsm"
2215 libilbc_decoder_deps="libilbc"
2216 libilbc_encoder_deps="libilbc"
2217 libkvazaar_encoder_deps="libkvazaar"
2218 libmp3lame_encoder_deps="libmp3lame"
2219 libmp3lame_encoder_select="audio_frame_queue"
2220 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2221 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2222 libopencore_amrnb_encoder_select="audio_frame_queue"
2223 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2224 libopenh264_encoder_deps="libopenh264"
2225 libopenjpeg_decoder_deps="libopenjpeg"
2226 libopenjpeg_encoder_deps="libopenjpeg"
2227 libopus_decoder_deps="libopus"
2228 libopus_encoder_deps="libopus"
2229 libopus_encoder_select="audio_frame_queue"
2230 libschroedinger_decoder_deps="libschroedinger"
2231 libschroedinger_encoder_deps="libschroedinger"
2232 libspeex_decoder_deps="libspeex"
2233 libspeex_encoder_deps="libspeex"
2234 libspeex_encoder_select="audio_frame_queue"
2235 libtheora_encoder_deps="libtheora"
2236 libtwolame_encoder_deps="libtwolame"
2237 libvo_aacenc_encoder_deps="libvo_aacenc"
2238 libvo_aacenc_encoder_select="audio_frame_queue"
2239 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2240 libvorbis_encoder_deps="libvorbis"
2241 libvorbis_encoder_select="audio_frame_queue"
2242 libvpx_vp8_decoder_deps="libvpx"
2243 libvpx_vp8_encoder_deps="libvpx"
2244 libvpx_vp9_decoder_deps="libvpx"
2245 libvpx_vp9_encoder_deps="libvpx"
2246 libwavpack_encoder_deps="libwavpack"
2247 libwebp_encoder_deps="libwebp"
2248 libx262_encoder_deps="libx262"
2249 libx264_encoder_deps="libx264"
2250 libx265_encoder_deps="libx265"
2251 libxavs_encoder_deps="libxavs"
2252 libxvid_encoder_deps="libxvid"
2253
2254 # demuxers / muxers
2255 ac3_demuxer_select="ac3_parser"
2256 asf_demuxer_select="riffdec"
2257 asf_muxer_select="riffenc"
2258 asf_stream_muxer_select="asf_muxer"
2259 avi_demuxer_select="iso_media riffdec"
2260 avi_muxer_select="riffenc"
2261 avisynth_demuxer_deps="avisynth"
2262 avisynth_demuxer_select="riffdec"
2263 caf_demuxer_select="iso_media riffdec"
2264 dash_muxer_select="mp4_muxer"
2265 dirac_demuxer_select="dirac_parser"
2266 dv_demuxer_select="dvprofile"
2267 dv_muxer_select="dvprofile"
2268 dxa_demuxer_select="riffdec"
2269 eac3_demuxer_select="ac3_parser"
2270 f4v_muxer_select="mov_muxer"
2271 flac_demuxer_select="flac_parser"
2272 hds_muxer_select="flv_muxer"
2273 hls_muxer_select="mpegts_muxer"
2274 ipod_muxer_select="mov_muxer"
2275 ismv_muxer_select="mov_muxer"
2276 matroska_audio_muxer_select="matroska_muxer"
2277 matroska_demuxer_select="iso_media riffdec"
2278 matroska_demuxer_suggest="bzlib lzo zlib"
2279 matroska_muxer_select="iso_media riffenc"
2280 mmf_muxer_select="riffenc"
2281 mov_demuxer_select="iso_media riffdec"
2282 mov_demuxer_suggest="zlib"
2283 mov_muxer_select="iso_media riffenc rtpenc_chain"
2284 mp3_demuxer_select="mpegaudio_parser"
2285 mp4_muxer_select="mov_muxer"
2286 mpegts_demuxer_select="iso_media"
2287 mpegts_muxer_select="adts_muxer latm_muxer"
2288 mpegtsraw_demuxer_select="mpegts_demuxer"
2289 mxf_d10_muxer_select="mxf_muxer"
2290 nut_muxer_select="riffenc"
2291 nuv_demuxer_select="riffdec"
2292 oga_muxer_select="ogg_muxer"
2293 ogg_demuxer_select="dirac_parse"
2294 opus_muxer_select="ogg_muxer"
2295 psp_muxer_select="mov_muxer"
2296 rtp_demuxer_select="sdp_demuxer"
2297 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2298 rtsp_demuxer_select="http_protocol rtpdec"
2299 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2300 sap_demuxer_select="sdp_demuxer"
2301 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2302 sdp_demuxer_select="rtpdec"
2303 smoothstreaming_muxer_select="ismv_muxer"
2304 spdif_muxer_select="aac_parser"
2305 spx_muxer_select="ogg_muxer"
2306 swf_demuxer_suggest="zlib"
2307 tak_demuxer_select="tak_parser"
2308 tg2_muxer_select="mov_muxer"
2309 tgp_muxer_select="mov_muxer"
2310 w64_demuxer_select="wav_demuxer"
2311 wav_demuxer_select="riffdec"
2312 wav_muxer_select="riffenc"
2313 webm_muxer_select="iso_media riffenc"
2314 webm_muxer_suggest="libopus_encoder libvorbis_encoder libvpx_vp8_encoder libvpx_vp9_encoder"
2315 wtv_demuxer_select="mpegts_demuxer riffdec"
2316 xmv_demuxer_select="riffdec"
2317 xwma_demuxer_select="riffdec"
2318
2319 # indevs / outdevs
2320 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2321 alsa_outdev_deps="alsa_asoundlib_h"
2322 avfoundation_indev_deps="AVFoundation_AVFoundation_h"
2323 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2324 dv1394_indev_deps="dv1394"
2325 dv1394_indev_select="dv_demuxer"
2326 fbdev_indev_deps="linux_fb_h"
2327 jack_indev_deps="jack_jack_h"
2328 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2329 libcdio_indev_deps="libcdio"
2330 libdc1394_indev_deps="libdc1394"
2331 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2332 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2333 pulse_indev_deps="libpulse"
2334 sndio_indev_deps="sndio_h"
2335 sndio_outdev_deps="sndio_h"
2336 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2337 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2338 vfwcap_indev_extralibs="-lavicap32"
2339 x11grab_indev_deps="x11grab"
2340 x11grab_xcb_indev_deps="libxcb"
2341
2342 # protocols
2343 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2344 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2345 ffrtmpcrypt_protocol_select="tcp_protocol"
2346 ffrtmphttp_protocol_deps="!librtmp_protocol"
2347 ffrtmphttp_protocol_select="http_protocol"
2348 gopher_protocol_select="network"
2349 http_protocol_select="tcp_protocol"
2350 httpproxy_protocol_select="tcp_protocol"
2351 https_protocol_select="tls_protocol"
2352 icecast_protocol_select="http_protocol"
2353 librtmp_protocol_deps="librtmp"
2354 librtmpe_protocol_deps="librtmp"
2355 librtmps_protocol_deps="librtmp"
2356 librtmpt_protocol_deps="librtmp"
2357 librtmpte_protocol_deps="librtmp"
2358 mmsh_protocol_select="http_protocol"
2359 mmst_protocol_select="network"
2360 rtmp_protocol_deps="!librtmp_protocol"
2361 rtmp_protocol_select="tcp_protocol"
2362 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2363 rtmps_protocol_deps="!librtmp_protocol"
2364 rtmps_protocol_select="tls_protocol"
2365 rtmpt_protocol_select="ffrtmphttp_protocol"
2366 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2367 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2368 rtp_protocol_select="udp_protocol"
2369 sctp_protocol_deps="struct_sctp_event_subscribe"
2370 sctp_protocol_select="network"
2371 srtp_protocol_select="rtp_protocol srtp"
2372 tcp_protocol_select="network"
2373 tls_gnutls_protocol_deps="gnutls"
2374 tls_gnutls_protocol_select="tcp_protocol"
2375 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2376 tls_openssl_protocol_select="tcp_protocol"
2377 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2378 udp_protocol_select="network"
2379 unix_protocol_deps="sys_un_h"
2380 unix_protocol_select="network"
2381
2382 # filters
2383 blackframe_filter_deps="gpl"
2384 boxblur_filter_deps="gpl"
2385 bs2b_filter_deps="libbs2b"
2386 cropdetect_filter_deps="gpl"
2387 delogo_filter_deps="gpl"
2388 drawtext_filter_deps="libfreetype"
2389 frei0r_filter_deps="frei0r dlopen"
2390 frei0r_filter_extralibs='$ldl'
2391 frei0r_src_filter_deps="frei0r dlopen"
2392 frei0r_src_filter_extralibs='$ldl'
2393 hqdn3d_filter_deps="gpl"
2394 interlace_filter_deps="gpl"
2395 ocv_filter_deps="libopencv"
2396 resample_filter_deps="avresample"
2397 scale_filter_deps="swscale"
2398 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2399
2400 # examples
2401 avcodec_example_deps="avcodec avutil"
2402 filter_audio_example_deps="avfilter avutil"
2403 metadata_example_deps="avformat avutil"
2404 output_example_deps="avcodec avformat avutil swscale"
2405 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2406 transcode_aac_example_deps="avcodec avformat avresample"
2407
2408 # libraries, in linking order
2409 avcodec_deps="avutil"
2410 avdevice_deps="avformat avcodec avutil"
2411 avfilter_deps="avutil"
2412 avformat_deps="avcodec avutil"
2413 avresample_deps="avutil"
2414 swscale_deps="avutil"
2415
2416 # programs
2417 avconv_deps="avcodec avfilter avformat avresample swscale"
2418 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2419                fps_filter null_filter resample_filter scale_filter
2420                setpts_filter trim_filter"
2421 avplay_deps="avcodec avfilter avformat avresample sdl"
2422 avplay_libs='$sdl_libs'
2423 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2424 avprobe_deps="avcodec avformat"
2425
2426 # documentation
2427 pod2man_deps="doc"
2428 texi2html_deps="doc"
2429
2430 # default parameters
2431
2432 logfile="config.log"
2433
2434 # installation paths
2435 prefix_default="/usr/local"
2436 bindir_default='${prefix}/bin'
2437 datadir_default='${prefix}/share/avconv'
2438 docdir_default='${prefix}/share/doc/libav'
2439 incdir_default='${prefix}/include'
2440 libdir_default='${prefix}/lib'
2441 mandir_default='${prefix}/share/man'
2442 shlibdir_default="$libdir_default"
2443
2444 # toolchain
2445 ar_default="ar"
2446 cc_default="gcc"
2447 host_cc_default="gcc"
2448 cp_f="cp -f"
2449 ln_s="ln -s -f"
2450 nm_default="nm -g"
2451 objformat="elf"
2452 pkg_config_default=pkg-config
2453 ranlib="ranlib"
2454 strip="strip"
2455 yasmexe="yasm"
2456
2457 # machine
2458 arch_default=$(uname -m)
2459 cpu="generic"
2460 intrinsics="none"
2461
2462 # OS
2463 target_os_default=$(tolower $(uname -s))
2464 host_os=$target_os_default
2465
2466 # configurable options
2467 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2468
2469 enable asm
2470 enable debug
2471 enable doc
2472 enable faan faandct faanidct
2473 enable optimizations
2474 enable safe_bitstream_reader
2475 enable static
2476 enable swscale_alpha
2477 enable valgrind_backtrace
2478
2479 # By default, enable only those hwaccels that have no external dependencies.
2480 enable d3d11va dxva2 vda vdpau
2481
2482 # build settings
2483 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2484 LIBPREF="lib"
2485 LIBSUF=".a"
2486 FULLNAME='$(NAME)$(BUILDSUF)'
2487 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2488 SLIBPREF="lib"
2489 SLIBSUF=".so"
2490 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2491 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2492 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2493 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2494 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2495 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2496
2497 asflags_filter=echo
2498 cflags_filter=echo
2499 ldflags_filter=echo
2500
2501 AS_C='-c'
2502 AS_O='-o $@'
2503 CC_C='-c'
2504 CC_E='-E -o $@'
2505 CC_O='-o $@'
2506 OBJCC_C='-c'
2507 OBJCC_E='-E -o $@'
2508 OBJCC_O='-o $@'
2509 LD_O='-o $@'
2510 LD_LIB='-l%'
2511 LD_PATH='-L'
2512 HOSTCC_C='-c'
2513 HOSTCC_E='-E -o $@'
2514 HOSTCC_O='-o $@'
2515 HOSTLD_O='-o $@'
2516
2517 host_libs='-lm'
2518 host_cflags_filter=echo
2519 host_ldflags_filter=echo
2520
2521 target_path='$(CURDIR)'
2522
2523 # since the object filename is not given with the -MM flag, the compiler
2524 # is only able to print the basename, and we must add the path ourselves
2525 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2526 DEPFLAGS='-MM'
2527
2528 # find source path
2529 if test -f configure; then
2530     source_path=.
2531 else
2532     source_path=$(cd $(dirname "$0"); pwd)
2533     echo "$source_path" | grep -q '[[:blank:]]' &&
2534         die "Out of tree builds are impossible with whitespace in source path."
2535     test -e "$source_path/config.h" &&
2536         die "Out of tree builds are impossible with config.h in source dir."
2537 fi
2538
2539 for v in "$@"; do
2540     r=${v#*=}
2541     l=${v%"$r"}
2542     r=$(sh_quote "$r")
2543     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2544 done
2545
2546 find_things(){
2547     thing=$1
2548     pattern=$2
2549     file=$source_path/$3
2550     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2551 }
2552
2553 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2554 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2555 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2556 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2557 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2558 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2559 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2560 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2561 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2562
2563 find_things_extern(){
2564     thing=$1
2565     pattern=$2
2566     file=$source_path/$3
2567     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2568 }
2569
2570 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2571 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2572
2573 ALL_COMPONENTS="
2574     $BSF_LIST
2575     $DECODER_LIST
2576     $DEMUXER_LIST
2577     $ENCODER_LIST
2578     $FILTER_LIST
2579     $HWACCEL_LIST
2580     $INDEV_LIST
2581     $MUXER_LIST
2582     $OUTDEV_LIST
2583     $PARSER_LIST
2584     $PROTOCOL_LIST
2585 "
2586
2587 for n in $COMPONENT_LIST; do
2588     v=$(toupper ${n%s})_LIST
2589     eval enable \$$v
2590     eval ${n}_if_any="\$$v"
2591 done
2592
2593 enable $ARCH_EXT_LIST
2594
2595 die_unknown(){
2596     echo "Unknown option \"$1\"."
2597     echo "See $0 --help for available options."
2598     exit 1
2599 }
2600
2601 print_3_columns() {
2602     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2603 }
2604
2605 show_list() {
2606     suffix=_$1
2607     shift
2608     echo $* | sed s/$suffix//g | print_3_columns
2609     exit 0
2610 }
2611
2612 rand_list(){
2613     IFS=', '
2614     set -- $*
2615     unset IFS
2616     for thing; do
2617         comp=${thing%:*}
2618         prob=${thing#$comp}
2619         prob=${prob#:}
2620         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2621         echo "prob ${prob:-0.5}"
2622         printf '%s\n' $comp
2623     done
2624 }
2625
2626 do_random(){
2627     action=$1
2628     shift
2629     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2630     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2631 }
2632
2633 for opt do
2634     optval="${opt#*=}"
2635     case "$opt" in
2636         --extra-ldflags=*)
2637             add_ldflags $optval
2638         ;;
2639         --extra-ldexeflags=*)
2640             add_ldexeflags $optval
2641         ;;
2642         --extra-libs=*)
2643             add_extralibs $optval
2644         ;;
2645         --disable-devices)
2646             disable $INDEV_LIST $OUTDEV_LIST
2647         ;;
2648         --enable-debug=*)
2649             debuglevel="$optval"
2650         ;;
2651         --disable-programs)
2652             disable $PROGRAM_LIST
2653         ;;
2654         --disable-everything)
2655             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2656         ;;
2657         --disable-all)
2658             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2659             disable $LIBRARY_LIST $PROGRAM_LIST doc
2660         ;;
2661         --enable-random|--disable-random)
2662             action=${opt%%-random}
2663             do_random ${action#--} $COMPONENT_LIST
2664         ;;
2665         --enable-random=*|--disable-random=*)
2666             action=${opt%%-random=*}
2667             do_random ${action#--} $optval
2668         ;;
2669         --enable-*=*|--disable-*=*)
2670             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2671             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2672             eval list=\$$(toupper $thing)_LIST
2673             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2674             $action $(filter "$name" $list)
2675         ;;
2676         --enable-avserver|--disable-avserver*)
2677             warn "avserver has been removed, the ${opt} option is only"\
2678                  "provided for compatibility and will be removed in the future"
2679         ;;
2680         --enable-?*|--disable-?*)
2681             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2682             if is_in $option $COMPONENT_LIST; then
2683                 test $action = disable && action=unset
2684                 eval $action \$$(toupper ${option%s})_LIST
2685             elif is_in $option $CMDLINE_SELECT; then
2686                 $action $option
2687             else
2688                 die_unknown $opt
2689             fi
2690         ;;
2691         --list-*)
2692             NAME="${opt#--list-}"
2693             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2694             NAME=${NAME%s}
2695             eval show_list $NAME \$$(toupper $NAME)_LIST
2696         ;;
2697         --help|-h) show_help
2698         ;;
2699         *)
2700             optname="${opt%%=*}"
2701             optname="${optname#--}"
2702             optname=$(echo "$optname" | sed 's/-/_/g')
2703             if is_in $optname $CMDLINE_SET; then
2704                 eval $optname='$optval'
2705             elif is_in $optname $CMDLINE_APPEND; then
2706                 append $optname "$optval"
2707             else
2708                 die_unknown $opt
2709             fi
2710         ;;
2711     esac
2712 done
2713
2714 for e in $env; do
2715     eval "export $e"
2716 done
2717
2718 disabled logging && logfile=/dev/null
2719
2720 # Disable all the library-specific components if the library itself
2721 # is disabled, see AVCODEC_LIST and following _LIST variables.
2722
2723 disable_components(){
2724     disabled ${1} && disable $(
2725         eval components="\$$(toupper ${1})_COMPONENTS"
2726         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2727     )
2728 }
2729
2730 map 'disable_components $v' $LIBRARY_LIST
2731
2732 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2733 set >> $logfile
2734
2735 case "$toolchain" in
2736     *-asan)
2737         cc_default="${toolchain%-asan}"
2738         add_cflags  -fsanitize=address
2739         add_ldflags -fsanitize=address
2740     ;;
2741     *-msan)
2742         cc_default="${toolchain%-msan}"
2743         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2744         add_ldflags -fsanitize=memory
2745     ;;
2746     *-tsan)
2747         cc_default="${toolchain%-tsan}"
2748         add_cflags  -fsanitize=thread -pie
2749         add_ldflags -fsanitize=thread -pie
2750         case "$toolchain" in
2751             gcc-tsan)
2752                 add_cflags  -fPIC
2753                 add_ldflags -fPIC
2754                 ;;
2755         esac
2756     ;;
2757     *-usan)
2758         cc_default="${toolchain%-usan}"
2759         add_cflags  -fsanitize=undefined
2760         add_ldflags -fsanitize=undefined
2761         case "$toolchain" in
2762             clang-usan)
2763                 add_cflags -O1
2764                 ;;
2765         esac
2766     ;;
2767     valgrind-*)
2768         target_exec_default="valgrind"
2769         case "$toolchain" in
2770             valgrind-massif)
2771                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2772                 ;;
2773             valgrind-memcheck)
2774                 target_exec_args="--track-origins=yes --leak-check=full"
2775                 ;;
2776         esac
2777     ;;
2778     msvc)
2779         # Check whether the current MSVC version needs the C99 converter.
2780         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2781         # support enough of C99 to build libav. Default to the new
2782         # behaviour if the regexp was unable to match anything, since this
2783         # successfully parses the version number of existing supported
2784         # versions that require the converter (MSVC 2010 and 2012).
2785         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2786         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2787             cc_default="cl"
2788         else
2789             cc_default="c99wrap cl"
2790         fi
2791         ld_default="$source_path/compat/windows/mslink"
2792         nm_default="dumpbin -symbols"
2793         ar_default="lib"
2794         case "$arch" in
2795         arm*)
2796             as_default="armasm"
2797             ;;
2798         esac
2799         target_os_default="win32"
2800         # Use a relative path for TMPDIR. This makes sure all the
2801         # ffconf temp files are written with a relative path, avoiding
2802         # issues with msys/win32 path conversion for MSVC parameters
2803         # such as -Fo<file> or -out:<file>.
2804         TMPDIR=.
2805     ;;
2806     icl)
2807         cc_default="icl"
2808         ld_default="xilink"
2809         nm_default="dumpbin -symbols"
2810         ar_default="xilib"
2811         target_os_default="win32"
2812         TMPDIR=.
2813     ;;
2814     gcov)
2815         add_cflags  -fprofile-arcs -ftest-coverage
2816         add_ldflags -fprofile-arcs -ftest-coverage
2817     ;;
2818     llvm-cov)
2819         add_cflags -fprofile-arcs -ftest-coverage
2820         add_ldflags --coverage
2821     ;;
2822     hardened)
2823         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2824         add_cflags   -fno-strict-overflow -fstack-protector-all
2825         add_ldflags  -Wl,-z,relro -Wl,-z,now
2826     ;;
2827     ?*)
2828         die "Unknown toolchain $toolchain"
2829     ;;
2830 esac
2831
2832 test -n "$cross_prefix" && enable cross_compile
2833
2834 if enabled cross_compile; then
2835     test -n "$arch" && test -n "$target_os" ||
2836         die "Must specify target arch and OS when cross-compiling"
2837 fi
2838
2839 ar_default="${cross_prefix}${ar_default}"
2840 cc_default="${cross_prefix}${cc_default}"
2841 occ_default="${cross_prefix}${occ_default}"
2842 nm_default="${cross_prefix}${nm_default}"
2843 pkg_config_default="${cross_prefix}${pkg_config_default}"
2844 ranlib="${cross_prefix}${ranlib}"
2845 strip="${cross_prefix}${strip}"
2846
2847 sysinclude_default="${sysroot}/usr/include"
2848
2849 set_default arch cc pkg_config sysinclude target_exec target_os
2850 enabled cross_compile || host_cc_default=$cc
2851 set_default host_cc
2852
2853 if ! $pkg_config --version >/dev/null 2>&1; then
2854     warn "$pkg_config not found, library detection may fail."
2855     pkg_config=false
2856 fi
2857
2858 exesuf() {
2859     case $1 in
2860         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2861     esac
2862 }
2863
2864 EXESUF=$(exesuf $target_os)
2865 HOSTEXESUF=$(exesuf $host_os)
2866
2867 # set temporary file name
2868 : ${TMPDIR:=$TEMPDIR}
2869 : ${TMPDIR:=$TMP}
2870 : ${TMPDIR:=/tmp}
2871
2872 if ! check_cmd mktemp -u XXXXXX; then
2873     # simple replacement for missing mktemp
2874     # NOT SAFE FOR GENERAL USE
2875     mktemp(){
2876         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2877     }
2878 fi
2879
2880 tmpfile(){
2881     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2882         (set -C; exec > $tmp) 2>/dev/null ||
2883         die "Unable to create temporary file in $TMPDIR."
2884     append TMPFILES $tmp
2885     eval $1=$tmp
2886 }
2887
2888 trap 'rm -f -- $TMPFILES' EXIT
2889
2890 tmpfile TMPASM .asm
2891 tmpfile TMPC   .c
2892 tmpfile TMPE   $EXESUF
2893 tmpfile TMPH   .h
2894 tmpfile TMPO   .o
2895 tmpfile TMPS   .S
2896 tmpfile TMPSH  .sh
2897 tmpfile TMPV   .ver
2898
2899 unset -f mktemp
2900
2901 chmod +x $TMPE
2902
2903 # make sure we can execute files in $TMPDIR
2904 cat > $TMPSH 2>> $logfile <<EOF
2905 #! /bin/sh
2906 EOF
2907 chmod +x $TMPSH >> $logfile 2>&1
2908 if ! $TMPSH >> $logfile 2>&1; then
2909     cat <<EOF
2910 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2911 variable to another directory and make sure that it is not mounted noexec.
2912 EOF
2913     die "Sanity test failed."
2914 fi
2915
2916 armasm_flags(){
2917     for flag; do
2918         case $flag in
2919             # Filter out MSVC cl.exe options from cflags that shouldn't
2920             # be passed to gas-preprocessor
2921             -M[TD]*)                                            ;;
2922             *)                  echo $flag                      ;;
2923         esac
2924    done
2925 }
2926
2927 ccc_flags(){
2928     for flag; do
2929         case $flag in
2930             -std=c99)           echo -c99                       ;;
2931             -mcpu=*)            echo -arch ${flag#*=}           ;;
2932             -mieee)             echo -ieee                      ;;
2933             -O*|-fast)          echo $flag                      ;;
2934             -fno-math-errno)    echo -assume nomath_errno       ;;
2935             -g)                 echo -g3                        ;;
2936             -Wall)              echo -msg_enable level2         ;;
2937             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2938             -Wl,*)              echo $flag                      ;;
2939             -f*|-W*)                                            ;;
2940             *)                  echo $flag                      ;;
2941         esac
2942    done
2943 }
2944
2945 cparser_flags(){
2946     for flag; do
2947         case $flag in
2948             -Wno-switch)             echo -Wno-switch-enum ;;
2949             -Wno-format-zero-length) ;;
2950             -Wdisabled-optimization) ;;
2951             -Wno-pointer-sign)       echo -Wno-other ;;
2952             *)                       echo $flag ;;
2953         esac
2954     done
2955 }
2956
2957 msvc_common_flags(){
2958     for flag; do
2959         case $flag in
2960             # In addition to specifying certain flags under the compiler
2961             # specific filters, they must be specified here as well or else the
2962             # generic catch all at the bottom will print the original flag.
2963             -Wall)                ;;
2964             -std=c99)             ;;
2965             # Common flags
2966             -fomit-frame-pointer) ;;
2967             -g)                   echo -Z7 ;;
2968             -fno-math-errno)      ;;
2969             -fno-common)          ;;
2970             -fno-signed-zeros)    ;;
2971             -fPIC)                ;;
2972             -mthumb)              ;;
2973             -march=*)             ;;
2974             -lz)                  echo zlib.lib ;;
2975             -lavifil32)           echo vfw32.lib ;;
2976             -lavicap32)           echo vfw32.lib user32.lib ;;
2977             -lx264)               echo libx264.lib ;;
2978             -l*)                  echo ${flag#-l}.lib ;;
2979             -L*)                  echo -libpath:${flag#-L} ;;
2980             *)                    echo $flag ;;
2981         esac
2982     done
2983 }
2984
2985 msvc_flags(){
2986     msvc_common_flags "$@"
2987     for flag; do
2988         case $flag in
2989             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2990                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2991                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2992                                        -wd4273 -wd4554 -wd4701 ;;
2993         esac
2994     done
2995 }
2996
2997 icl_flags(){
2998     msvc_common_flags "$@"
2999     for flag; do
3000         case $flag in
3001             # Despite what Intel's documentation says -Wall, which is supported
3002             # on Windows, does enable remarks so disable them here.
3003             -Wall)                echo $flag -Qdiag-disable:remark ;;
3004             -std=c99)             echo -Qstd=c99 ;;
3005         esac
3006     done
3007 }
3008
3009 pgi_flags(){
3010     for flag; do
3011         case $flag in
3012             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3013             -fomit-frame-pointer) echo -Mnoframe ;;
3014             -g)                   echo -gopt ;;
3015             *)                    echo $flag ;;
3016         esac
3017     done
3018 }
3019
3020 suncc_flags(){
3021     for flag; do
3022         case $flag in
3023             -march=*|-mcpu=*)
3024                 case "${flag#*=}" in
3025                     native)                   echo -xtarget=native       ;;
3026                     v9|niagara)               echo -xarch=sparc          ;;
3027                     ultrasparc)               echo -xarch=sparcvis       ;;
3028                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3029                     i586|pentium)             echo -xchip=pentium        ;;
3030                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3031                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3032                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3033                     pentium4*)          echo -xtarget=pentium4           ;;
3034                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3035                     *-sse3)             echo -xarch=sse3                 ;;
3036                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3037                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3038                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3039                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3040                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3041                     k8|opteron|athlon64|athlon-fx)
3042                                                echo -xarch=sse2a         ;;
3043                     athlon*)                   echo -xarch=pentium_proa  ;;
3044                 esac
3045                 ;;
3046             -std=c99)             echo -xc99              ;;
3047             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3048             -fPIC)                echo -KPIC -xcode=pic32 ;;
3049             -W*,*)                echo $flag              ;;
3050             -f*-*|-W*|-mimpure-text)                      ;;
3051             -shared)              echo -G                 ;;
3052             *)                    echo $flag              ;;
3053         esac
3054     done
3055 }
3056
3057 tms470_flags(){
3058     for flag; do
3059         case $flag in
3060             -march=*|-mcpu=*)
3061                 case "${flag#*=}" in
3062                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3063                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3064                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3065                     armv6*|arm11*)          echo -mv=6   ;;
3066                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3067                                             echo -mv=5e  ;;
3068                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3069                 esac
3070                 ;;
3071             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3072             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3073             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3074             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3075             -msoft-float)   echo --float_support=vfplib       ;;
3076             -O[0-3]|-mf=*)  echo $flag                        ;;
3077             -g)             echo -g -mn                       ;;
3078             -pds=*)         echo $flag                        ;;
3079             -D*|-I*)        echo $flag                        ;;
3080             --gcc|--abi=*)  echo $flag                        ;;
3081             -me)            echo $flag                        ;;
3082         esac
3083     done
3084 }
3085
3086 probe_cc(){
3087     pfx=$1
3088     _cc=$2
3089
3090     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3091     unset _ld_o _ldflags _ld_lib _ld_path
3092     unset _depflags _DEPCMD _DEPFLAGS
3093     _flags_filter=echo
3094
3095     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3096         _type=llvm_gcc
3097         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3098         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3099         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3100         _cflags_speed='-O3'
3101         _cflags_size='-Os'
3102     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3103         _type=gcc
3104         gcc_version=$($_cc --version | head -n1)
3105         gcc_basever=$($_cc -dumpversion)
3106         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3107         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3108         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3109         if ! $_cc -dumpversion | grep -q '^2\.'; then
3110             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3111         fi
3112         _cflags_speed='-O3'
3113         _cflags_size='-Os'
3114     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3115         _type=icc
3116         _ident=$($_cc --version | head -n1)
3117         _depflags='-MMD'
3118         _cflags_speed='-O3'
3119         _cflags_size='-Os'
3120         _cflags_noopt='-O1'
3121     elif $_cc -v 2>&1 | grep -q xlc; then
3122         _type=xlc
3123         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3124         _cflags_speed='-O5'
3125         _cflags_size='-O5 -qcompact'
3126     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3127         _type=ccc
3128         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3129         _DEPFLAGS='-M'
3130         _cflags_speed='-fast'
3131         _cflags_size='-O1'
3132         _flags_filter=ccc_flags
3133     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3134         test -d "$sysroot" || die "No valid sysroot specified."
3135         _type=armcc
3136         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3137         armcc_conf="$PWD/armcc.conf"
3138         $_cc --arm_linux_configure                 \
3139              --arm_linux_config_file="$armcc_conf" \
3140              --configure_sysroot="$sysroot"        \
3141              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3142              die "Error creating armcc configuration file."
3143         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3144         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3145         as_default="${cross_prefix}gcc"
3146         _depflags='-MMD'
3147         _cflags_speed='-O3'
3148         _cflags_size='-Os'
3149     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3150         _type=tms470
3151         _ident=$($_cc -version | head -n1 | tr -s ' ')
3152         _flags='--gcc --abi=eabi -me'
3153         _cc_e='-ppl -fe=$@'
3154         _cc_o='-fe=$@'
3155         _depflags='-ppa -ppd=$(@:.o=.d)'
3156         _cflags_speed='-O3 -mf=5'
3157         _cflags_size='-O3 -mf=2'
3158         _flags_filter=tms470_flags
3159     elif $_cc -v 2>&1 | grep -q clang; then
3160         _type=clang
3161         _ident=$($_cc --version 2>/dev/null | head -n1)
3162         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3163         _cflags_speed='-O3'
3164         _cflags_size='-Os'
3165     elif $_cc -V 2>&1 | grep -q Sun; then
3166         _type=suncc
3167         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3168         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3169         _DEPFLAGS='-xM1 -xc99'
3170         _ldflags='-std=c99'
3171         _cflags_speed='-O5'
3172         _cflags_size='-O5 -xspace'
3173         _flags_filter=suncc_flags
3174     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3175         _type=pathscale
3176         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3177         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3178         _cflags_speed='-O2'
3179         _cflags_size='-Os'
3180         _flags_filter='filter_out -Wdisabled-optimization'
3181     elif $_cc -v 2>&1 | grep -q Open64; then
3182         _type=open64
3183         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3184         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3185         _cflags_speed='-O2'
3186         _cflags_size='-Os'
3187         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3188     elif $_cc -V 2>&1 | grep -q Portland; then
3189         _type=pgi
3190         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3191         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3192         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3193         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3194         _cflags_noopt="-O1"
3195         _flags_filter=pgi_flags
3196     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3197         _type=armasm
3198         _ident=$($_cc | head -n1)
3199         # 4509: "This form of conditional instruction is deprecated"
3200         _flags="-nologo -ignore 4509"
3201         _flags_filter=armasm_flags
3202     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3203         _type=msvc
3204         _ident=$($_cc 2>&1 | head -n1)
3205         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3206         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3207         _cflags_speed="-O2"
3208         _cflags_size="-O1"
3209         if $_cc -nologo- 2>&1 | grep -q Linker; then
3210             _ld_o='-out:$@'
3211         else
3212             _ld_o='-Fe$@'
3213         fi
3214         _cc_o='-Fo$@'
3215         _cc_e='-P -Fi$@'
3216         _flags_filter=msvc_flags
3217         _ld_lib='lib%.a'
3218         _ld_path='-libpath:'
3219         _flags='-nologo'
3220         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3221     elif $_cc 2>&1 | grep -q Intel; then
3222         _type=icl
3223         _ident=$($_cc 2>&1 | head -n1)
3224         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3225         # Not only is O3 broken on 13.x+ but it is slower on all previous
3226         # versions (tested) as well.
3227         _cflags_speed="-O2"
3228         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3229         if $_cc 2>&1 | grep -q Linker; then
3230             _ld_o='-out:$@'
3231         else
3232             _ld_o='-Fe$@'
3233         fi
3234         _cc_o='-Fo$@'
3235         _cc_e='-P'
3236         _flags_filter=icl_flags
3237         _ld_lib='lib%.a'
3238         _ld_path='-libpath:'
3239         # -Qdiag-error to make icl error when seeing certain unknown arguments
3240         _flags='-nologo -Qdiag-error:4044,10157'
3241         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3242         # with MSVC which enables it by default.
3243         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS'
3244     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3245         _type=cparser
3246         _ident=$($_cc --version | head -n1)
3247         _depflags='-MMD'
3248         _cflags_speed='-O4'
3249         _cflags_size='-O2'
3250         _flags_filter=cparser_flags
3251     fi
3252
3253     eval ${pfx}_type=\$_type
3254     eval ${pfx}_ident=\$_ident
3255 }
3256
3257 set_ccvars(){
3258     eval ${1}_C=\${_cc_c-\${${1}_C}}
3259     eval ${1}_E=\${_cc_e-\${${1}_E}}
3260     eval ${1}_O=\${_cc_o-\${${1}_O}}
3261
3262     if [ -n "$_depflags" ]; then
3263         eval ${1}_DEPFLAGS=\$_depflags
3264     else
3265         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3266         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3267         eval DEP${1}FLAGS=\$_flags
3268     fi
3269 }
3270
3271 probe_cc cc "$cc"
3272 cflags_filter=$_flags_filter
3273 cflags_speed=$_cflags_speed
3274 cflags_size=$_cflags_size
3275 cflags_noopt=$_cflags_noopt
3276 add_cflags $_flags $_cflags
3277 cc_ldflags=$_ldflags
3278 set_ccvars CC
3279
3280 probe_cc hostcc "$host_cc"
3281 host_cflags_filter=$_flags_filter
3282 add_host_cflags  $_flags $_cflags
3283 set_ccvars HOSTCC
3284
3285 test -n "$cc_type" && enable $cc_type ||
3286     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3287
3288 : ${as_default:=$cc}
3289 : ${objcc_default:=$cc}
3290 : ${dep_cc_default:=$cc}
3291 : ${ld_default:=$cc}
3292 : ${host_ld_default:=$host_cc}
3293 set_default ar as objcc dep_cc ld host_ld
3294
3295 probe_cc as "$as"
3296 asflags_filter=$_flags_filter
3297 add_asflags $_flags $_cflags
3298 set_ccvars AS
3299
3300 probe_cc objcc "$objcc"
3301 objcflags_filter=$_flags_filter
3302 add_objcflags $_flags $_cflags
3303 set_ccvars OBJC
3304
3305 probe_cc ld "$ld"
3306 ldflags_filter=$_flags_filter
3307 add_ldflags $_flags $_ldflags
3308 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3309 LD_O=${_ld_o-$LD_O}
3310 LD_LIB=${_ld_lib-$LD_LIB}
3311 LD_PATH=${_ld_path-$LD_PATH}
3312
3313 probe_cc hostld "$host_ld"
3314 host_ldflags_filter=$_flags_filter
3315 add_host_ldflags $_flags $_ldflags
3316 HOSTLD_O=${_ld_o-$HOSTLD_O}
3317
3318 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3319     probe_cc depcc "$dep_cc"
3320     CCDEP=${_DEPCMD:-$DEPCMD}
3321     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3322     DEPCCFLAGS=$_flags
3323 fi
3324
3325 if $ar 2>&1 | grep -q Microsoft; then
3326     arflags="-nologo"
3327     ar_o='-out:$@'
3328 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3329     arflags="rq"
3330     ar_o='$@'
3331 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3332     arflags='-Xany -r -c'
3333     ar_o='$@'
3334 else
3335     arflags="rc"
3336     ar_o='$@'
3337 fi
3338
3339 add_cflags $extra_cflags
3340 add_objcflags $extra_objcflags
3341 add_asflags $extra_cflags
3342
3343 if test -n "$sysroot"; then
3344     case "$cc_type" in
3345         gcc|llvm_gcc|clang)
3346             add_cppflags --sysroot="$sysroot"
3347             add_ldflags --sysroot="$sysroot"
3348         ;;
3349         tms470)
3350             add_cppflags -I"$sysinclude"
3351             add_ldflags  --sysroot="$sysroot"
3352         ;;
3353     esac
3354 fi
3355
3356 if test "$cpu" = host; then
3357     enabled cross_compile &&
3358         die "--cpu=host makes no sense when cross-compiling."
3359
3360     case "$cc_type" in
3361         gcc|llvm_gcc)
3362             check_native(){
3363                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3364                 sed -n "/cc1.*$1=/{
3365                             s/.*$1=\\([^ ]*\\).*/\\1/
3366                             p
3367                             q
3368                         }" $TMPE
3369             }
3370             cpu=$(check_native -march || check_native -mcpu)
3371         ;;
3372     esac
3373
3374     test "${cpu:-host}" = host &&
3375         die "--cpu=host not supported with compiler $cc"
3376 fi
3377
3378 # Deal with common $arch aliases
3379 case "$arch" in
3380     aarch64|arm64)
3381         arch="aarch64"
3382     ;;
3383     arm*)
3384         arch="arm"
3385     ;;
3386     mips*|IP*)
3387         case "$arch" in
3388         *el)
3389             add_cppflags -EL
3390             add_ldflags -EL
3391         ;;
3392         *eb)
3393             add_cppflags -EB
3394             add_ldflags -EB
3395         ;;
3396         esac
3397         arch="mips"
3398     ;;
3399     parisc*|hppa*)
3400         arch="parisc"
3401     ;;
3402     "Power Macintosh"|ppc*|powerpc*)
3403         arch="ppc"
3404     ;;
3405     s390|s390x)
3406         arch="s390"
3407     ;;
3408     sh4|sh)
3409         arch="sh4"
3410     ;;
3411     sun4u|sparc*)
3412         arch="sparc"
3413     ;;
3414     tilegx|tile-gx)
3415         arch="tilegx"
3416     ;;
3417     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3418         arch="x86"
3419     ;;
3420 esac
3421
3422 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3423 enable $arch
3424
3425 # Add processor-specific flags
3426 if enabled aarch64; then
3427
3428     case $cpu in
3429         armv*)
3430             cpuflags="-march=$cpu"
3431         ;;
3432         *)
3433             cpuflags="-mcpu=$cpu"
3434         ;;
3435     esac
3436
3437 elif enabled alpha; then
3438
3439     cpuflags="-mcpu=$cpu"
3440
3441 elif enabled arm; then
3442
3443     check_arm_arch() {
3444         check_cpp_condition stddef.h \
3445             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3446             $cpuflags
3447     }
3448
3449     probe_arm_arch() {
3450         if   check_arm_arch 4;        then echo armv4
3451         elif check_arm_arch 4T;       then echo armv4t
3452         elif check_arm_arch 5;        then echo armv5
3453         elif check_arm_arch 5E;       then echo armv5e
3454         elif check_arm_arch 5T;       then echo armv5t
3455         elif check_arm_arch 5TE;      then echo armv5te
3456         elif check_arm_arch 5TEJ;     then echo armv5te
3457         elif check_arm_arch 6;        then echo armv6
3458         elif check_arm_arch 6J;       then echo armv6j
3459         elif check_arm_arch 6K;       then echo armv6k
3460         elif check_arm_arch 6Z;       then echo armv6z
3461         elif check_arm_arch 6ZK;      then echo armv6zk
3462         elif check_arm_arch 6T2;      then echo armv6t2
3463         elif check_arm_arch 7;        then echo armv7
3464         elif check_arm_arch 7A  7_A;  then echo armv7-a
3465         elif check_arm_arch 7S;       then echo armv7-a
3466         elif check_arm_arch 7R  7_R;  then echo armv7-r
3467         elif check_arm_arch 7M  7_M;  then echo armv7-m
3468         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3469         elif check_arm_arch 8A  8_A;  then echo armv8-a
3470         fi
3471     }
3472
3473     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3474
3475     case $cpu in
3476         armv*)
3477             cpuflags="-march=$cpu"
3478             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3479         ;;
3480         *)
3481             cpuflags="-mcpu=$cpu"
3482             case $cpu in
3483                 cortex-a*)                               subarch=armv7a  ;;
3484                 cortex-r*)                               subarch=armv7r  ;;
3485                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3486                 arm11*)                                  subarch=armv6   ;;
3487                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3488                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3489                 *)                             subarch=$(probe_arm_arch) ;;
3490             esac
3491         ;;
3492     esac
3493
3494     case "$subarch" in
3495         armv5t*)    enable fast_clz                ;;
3496         armv[6-8]*) enable fast_clz fast_unaligned ;;
3497     esac
3498
3499 elif enabled avr32; then
3500
3501     case $cpu in
3502         ap7[02]0[0-2])
3503             subarch="avr32_ap"
3504             cpuflags="-mpart=$cpu"
3505         ;;
3506         ap)
3507             subarch="avr32_ap"
3508             cpuflags="-march=$cpu"
3509         ;;
3510         uc3[ab]*)
3511             subarch="avr32_uc"
3512             cpuflags="-mcpu=$cpu"
3513         ;;
3514         uc)
3515             subarch="avr32_uc"
3516             cpuflags="-march=$cpu"
3517         ;;
3518     esac
3519
3520 elif enabled bfin; then
3521
3522     cpuflags="-mcpu=$cpu"
3523
3524 elif enabled mips; then
3525
3526     cpuflags="-march=$cpu"
3527
3528 elif enabled ppc; then
3529
3530     disable ldbrx
3531
3532     case $(tolower $cpu) in
3533         601|ppc601|powerpc601)
3534             cpuflags="-mcpu=601"
3535             disable altivec
3536         ;;
3537         603*|ppc603*|powerpc603*)
3538             cpuflags="-mcpu=603"
3539             disable altivec
3540         ;;
3541         604*|ppc604*|powerpc604*)
3542             cpuflags="-mcpu=604"
3543             disable altivec
3544         ;;
3545         g3|75*|ppc75*|powerpc75*)
3546             cpuflags="-mcpu=750"
3547             disable altivec
3548         ;;
3549         g4|745*|ppc745*|powerpc745*)
3550             cpuflags="-mcpu=7450"
3551             disable vsx
3552         ;;
3553         74*|ppc74*|powerpc74*)
3554             cpuflags="-mcpu=7400"
3555             disable vsx
3556         ;;
3557         g5|970|ppc970|powerpc970)
3558             cpuflags="-mcpu=970"
3559             disable vsx
3560         ;;
3561         power[3-6]*)
3562             cpuflags="-mcpu=$cpu"
3563             disable vsx
3564         ;;
3565         power[7-8]*)
3566             cpuflags="-mcpu=$cpu"
3567             enable ldbrx
3568         ;;
3569         cell)
3570             cpuflags="-mcpu=cell"
3571             enable ldbrx
3572             disable vsx
3573         ;;
3574         e500mc)
3575             cpuflags="-mcpu=e500mc"
3576             disable altivec
3577         ;;
3578         e500v2)
3579             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3580             disable altivec
3581             disable dcbzl
3582         ;;
3583         e500)
3584             cpuflags="-mcpu=8540 -mhard-float"
3585             disable altivec
3586             disable dcbzl
3587         ;;
3588     esac
3589
3590 elif enabled sparc; then
3591
3592     case $cpu in
3593         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3594             cpuflags="-mcpu=$cpu"
3595         ;;
3596         ultrasparc*|niagara[234])
3597             cpuflags="-mcpu=$cpu"
3598         ;;
3599     esac
3600
3601 elif enabled x86; then
3602
3603     case $cpu in
3604         i[345]86|pentium)
3605             cpuflags="-march=$cpu"
3606             disable i686
3607             disable mmx
3608         ;;
3609         # targets that do NOT support nopl and conditional mov (cmov)
3610         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3611             cpuflags="-march=$cpu"
3612             disable i686
3613         ;;
3614         # targets that do support nopl and conditional mov (cmov)
3615         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3616             cpuflags="-march=$cpu"
3617             enable i686
3618             enable fast_cmov
3619         ;;
3620         # targets that do support conditional mov but on which it's slow
3621         pentium4|pentium4m|prescott|nocona)
3622             cpuflags="-march=$cpu"
3623             enable i686
3624             disable fast_cmov
3625         ;;
3626     esac
3627
3628 fi
3629
3630 if [ "$cpu" != generic ]; then
3631     add_cflags  $cpuflags
3632     add_asflags $cpuflags
3633     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3634 fi
3635
3636 # compiler sanity check
3637 check_exec <<EOF
3638 int main(void){ return 0; }
3639 EOF
3640 if test "$?" != 0; then
3641     echo "$cc is unable to create an executable file."
3642     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3643         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3644         echo "Only do this if you know what cross compiling means."
3645     fi
3646     die "C compiler test failed."
3647 fi
3648
3649 add_cppflags -D_ISOC99_SOURCE
3650 check_cflags -std=c99
3651 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3652 #include <stdlib.h>
3653 EOF
3654 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3655 #include <stdlib.h>
3656 EOF
3657
3658 add_host_cppflags -D_ISOC99_SOURCE
3659 check_host_cflags -std=c99
3660 check_host_cflags -Wall
3661 check_host_cflags -O3
3662
3663 check_64bit(){
3664     arch32=$1
3665     arch64=$2
3666     expr=$3
3667     check_code cc "" "int test[2*($expr) - 1]" &&
3668         subarch=$arch64 || subarch=$arch32
3669 }
3670
3671 case "$arch" in
3672     aarch64|alpha|ia64)
3673         spic=$shared
3674     ;;
3675     mips)
3676         check_64bit mips mips64 '_MIPS_SIM > 1'
3677         spic=$shared
3678     ;;
3679     parisc)
3680         check_64bit parisc parisc64 'sizeof(void *) > 4'
3681         spic=$shared
3682     ;;
3683     ppc)
3684         check_64bit ppc ppc64 'sizeof(void *) > 4'
3685         spic=$shared
3686     ;;
3687     s390)
3688         check_64bit s390 s390x 'sizeof(void *) > 4'
3689         spic=$shared
3690     ;;
3691     sparc)
3692         check_64bit sparc sparc64 'sizeof(void *) > 4'
3693         spic=$shared
3694     ;;
3695     x86)
3696         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3697         if test "$subarch" = "x86_64"; then
3698             spic=$shared
3699         fi
3700     ;;
3701 esac
3702
3703 enable $subarch
3704 enabled spic && enable_weak pic
3705
3706 # OS specific
3707 case $target_os in
3708     aix)
3709         SHFLAGS=-shared
3710         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3711         enabled shared && add_ldflags -Wl,-brtl
3712         ;;
3713     android)
3714         disable symver
3715         enable section_data_rel_ro
3716         SLIB_INSTALL_NAME='$(SLIBNAME)'
3717         SLIB_INSTALL_LINKS=
3718         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3719         ;;
3720     haiku)
3721         prefix_default="/boot/common"
3722         network_extralibs="-lnetwork"
3723         host_libs=
3724         ;;
3725     sunos)
3726         SHFLAGS='-shared -Wl,-h,$$(@F)'
3727         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3728         network_extralibs="-lsocket -lnsl"
3729         # When using suncc to build, the Solaris linker will mark
3730         # an executable with each instruction set encountered by
3731         # the Solaris assembler.  As our libraries contain their own
3732         # guards for processor-specific code, instead suppress
3733         # generation of the HWCAPS ELF section on Solaris x86 only.
3734         enabled_all suncc x86 &&
3735             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3736             add_ldflags -Wl,-M,mapfile
3737         nm_default='nm -P -g'
3738         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
3739         ;;
3740     netbsd)
3741         disable symver
3742         oss_indev_extralibs="-lossaudio"
3743         oss_outdev_extralibs="-lossaudio"
3744         ;;
3745     openbsd|bitrig)
3746         disable symver
3747         SHFLAGS='-shared'
3748         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3749         SLIB_INSTALL_LINKS=
3750         oss_indev_extralibs="-lossaudio"
3751         oss_outdev_extralibs="-lossaudio"
3752         ;;
3753     dragonfly)
3754         disable symver
3755         ;;
3756     freebsd)
3757         ;;
3758     bsd/os)
3759         add_extralibs -lpoll -lgnugetopt
3760         ;;
3761     darwin)
3762         enabled ppc && add_asflags -force_cpusubtype_ALL
3763         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3764         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3765         add_ldflags -Wl,-dynamic,-search_paths_first
3766         SLIBSUF=".dylib"
3767         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3768         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3769         objformat="macho"
3770         enabled x86_64 && objformat="macho64"
3771         enabled_any pic shared ||
3772             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3773         check_header dispatch/dispatch.h &&
3774             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3775         ;;
3776     msys*)
3777         die "Native MSYS builds are discouraged, please use the MINGW environment."
3778         ;;
3779     mingw32*|mingw64*)
3780         if test $target_os = "mingw32ce"; then
3781             disable network
3782         else
3783             target_os=mingw32
3784         fi
3785         LIBTARGET=i386
3786         if enabled x86_64; then
3787             LIBTARGET="i386:x86-64"
3788         elif enabled arm; then
3789             LIBTARGET=arm-wince
3790         fi
3791         check_ldflags -Wl,--nxcompat
3792         check_ldflags -Wl,--dynamicbase
3793         shlibdir_default="$bindir_default"
3794         SLIBPREF=""
3795         SLIBSUF=".dll"
3796         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3797         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3798         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3799         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3800         SLIB_INSTALL_LINKS=
3801         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3802         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3803         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3804         objformat="win32"
3805         dlltool="${cross_prefix}dlltool"
3806         ranlib=:
3807         enable dos_paths
3808         ;;
3809     win32|win64)
3810         disable symver
3811         if enabled shared; then
3812             # Link to the import library instead of the normal static library
3813             # for shared libs.
3814             LD_LIB='%.lib'
3815             # Cannot build both shared and static libs with MSVC or icl.
3816             disable static
3817         fi
3818         shlibdir_default="$bindir_default"
3819         SLIBPREF=""
3820         SLIBSUF=".dll"
3821         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3822         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3823         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3824         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3825         SLIB_INSTALL_LINKS=
3826         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3827         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3828         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3829         objformat="win32"
3830         ranlib=:
3831         enable dos_paths
3832         ;;
3833     cygwin*)
3834         target_os=cygwin
3835         shlibdir_default="$bindir_default"
3836         SLIBPREF="cyg"
3837         SLIBSUF=".dll"
3838         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3839         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3840         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3841         SLIB_INSTALL_LINKS=
3842         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3843         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3844         objformat="win32"
3845         enable dos_paths
3846         ;;
3847     *-dos|freedos|opendos)
3848         network_extralibs="-lsocket"
3849         objformat="coff"
3850         enable dos_paths
3851         add_cppflags -U__STRICT_ANSI__
3852         ;;
3853     linux)
3854         enable dv1394
3855         enable section_data_rel_ro
3856         ;;
3857     irix*)
3858         target_os=irix
3859         ranlib="echo ignoring ranlib"
3860         ;;
3861     os/2*)
3862         ln_s="cp -f"
3863         objformat="aout"
3864         add_cppflags -D_GNU_SOURCE
3865         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3866         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3867         LIBSUF="_s.a"
3868         SLIBPREF=""
3869         SLIBSUF=".dll"
3870         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3871         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3872         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3873             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3874             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3875             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3876             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3877         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3878             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3879         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3880         enable dos_paths
3881         ;;
3882     gnu/kfreebsd)
3883         add_cppflags -D_BSD_SOURCE
3884         ;;
3885     gnu)
3886         ;;
3887     qnx)
3888         add_cppflags -D_QNX_SOURCE
3889         network_extralibs="-lsocket"
3890         ;;
3891     symbian)
3892         SLIBSUF=".dll"
3893         enable dos_paths
3894         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3895         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3896         add_ldflags -Wl,--target1-abs,--no-undefined \
3897                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3898                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3899         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3900                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3901                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3902         ;;
3903     osf1)
3904         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3905         ;;
3906     minix)
3907         ;;
3908     plan9)
3909         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3910                      -D_REENTRANT_SOURCE        \
3911                      -D_RESEARCH_SOURCE         \
3912                      -DFD_SETSIZE=96            \
3913                      -DHAVE_SOCK_OPTS
3914         add_compat strtod.o strtod=avpriv_strtod
3915         network_extralibs='-lbsd'
3916         exeobjs=compat/plan9/main.o
3917         cp_f='cp'
3918         ;;
3919     none)
3920         ;;
3921     *)
3922         die "Unknown OS '$target_os'."
3923         ;;
3924 esac
3925
3926 # determine libc flavour
3927
3928 probe_libc(){
3929     pfx=$1
3930     pfx_no_=${pfx%_}
3931     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3932     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3933         eval ${pfx}libc_type=uclibc
3934         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3935     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3936         eval ${pfx}libc_type=glibc
3937         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3938     # MinGW headers can be installed on Cygwin, so check for newlib first.
3939     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3940         eval ${pfx}libc_type=newlib
3941         add_${pfx}cppflags -U__STRICT_ANSI__
3942     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3943     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3944         eval ${pfx}libc_type=mingw64
3945         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3946         eval test \$${pfx_no_}cc_type = "gcc" &&
3947             add_${pfx}cppflags -D__printf__=__gnu_printf__
3948     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3949          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3950         eval ${pfx}libc_type=mingw32
3951         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3952             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3953             die "ERROR: MinGW32 runtime version must be >= 3.15."
3954         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3955         eval test \$${pfx_no_}cc_type = "gcc" &&
3956             add_${pfx}cppflags -D__printf__=__gnu_printf__
3957     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3958         eval ${pfx}libc_type=msvcrt
3959         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
3960             if [ "$pfx" = host_ ]; then
3961                 add_host_cppflags -Dsnprintf=_snprintf
3962             else
3963                 add_compat strtod.o strtod=avpriv_strtod
3964                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3965                                              _snprintf=avpriv_snprintf  \
3966                                              vsnprintf=avpriv_vsnprintf
3967             fi
3968         fi
3969         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3970         # 0x601 by default unless something else is set by the user.
3971         # This can easily lead to us detecting functions only present
3972         # in such new versions and producing binaries requiring windows 7.0.
3973         # Therefore explicitly set the default to XP unless the user has
3974         # set something else on the command line.
3975         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
3976         # family. For these cases, configure is free to use any functions
3977         # found in the SDK headers by default. (Alternatively, we could force
3978         # _WIN32_WINNT to 0x0602 in that case.)
3979         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3980             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
3981 #ifdef WINAPI_FAMILY
3982 #include <winapifamily.h>
3983 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
3984 #error not desktop
3985 #endif
3986 #endif
3987 EOF
3988     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3989         eval ${pfx}libc_type=klibc
3990     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3991         eval ${pfx}libc_type=bionic
3992     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3993         eval ${pfx}libc_type=solaris
3994         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3995     else
3996         eval ${pfx}libc_type=default
3997         add_${pfx}cppflags -D_DEFAULT_SOURCE
3998     fi
3999 }
4000
4001 probe_libc
4002 test -n "$libc_type" && enable libc_$libc_type
4003 probe_libc host_
4004 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4005
4006 case $libc_type in
4007     bionic)
4008         add_compat strtod.o strtod=avpriv_strtod
4009         ;;
4010 esac
4011
4012 # hacks for compiler/libc/os combinations
4013
4014 if enabled_all tms470 libc_glibc; then
4015     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4016     add_cppflags -D__USER_LABEL_PREFIX__=
4017     add_cppflags -D__builtin_memset=memset
4018     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4019     add_cflags   -pds=48    # incompatible redefinition of macro
4020 fi
4021
4022 if enabled_all ccc libc_glibc; then
4023     add_ldflags -Wl,-z,now  # calls to libots crash without this
4024 fi
4025
4026 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4027     add_cppflags '-I\$(SRC_PATH)/compat/float'
4028
4029 esc(){
4030     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4031 }
4032
4033 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
4034
4035 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4036
4037 set_default $PATHS_LIST
4038 set_default nm
4039
4040 # we need to build at least one lib type
4041 if ! enabled_any static shared; then
4042     cat <<EOF
4043 At least one library type must be built.
4044 Specify --enable-static to build the static libraries or --enable-shared to
4045 build the shared libraries as well. To only build the shared libraries specify
4046 --disable-static in addition to --enable-shared.
4047 EOF
4048     exit 1
4049 fi
4050
4051 die_license_disabled() {
4052     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4053 }
4054
4055 die_license_disabled gpl libcdio
4056 die_license_disabled gpl libx264
4057 die_license_disabled gpl libx265
4058 die_license_disabled gpl libxavs
4059 die_license_disabled gpl libxvid
4060 die_license_disabled gpl x11grab
4061
4062 die_license_disabled nonfree cuda
4063 die_license_disabled nonfree libfaac
4064 die_license_disabled nonfree libfdk_aac
4065 die_license_disabled nonfree libnpp
4066 die_license_disabled nonfree nvenc
4067 die_license_disabled nonfree openssl
4068
4069 die_license_disabled version3 libopencore_amrnb
4070 die_license_disabled version3 libopencore_amrwb
4071 die_license_disabled version3 libvo_aacenc
4072 die_license_disabled version3 libvo_amrwbenc
4073
4074 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4075
4076 disabled optimizations || check_cflags -fomit-frame-pointer
4077
4078 enable_weak_pic() {
4079     disabled pic && return
4080     enable pic
4081     add_cppflags -DPIC
4082     case "$target_os" in
4083     mingw*|cygwin*)
4084         ;;
4085     *)
4086         add_cflags -fPIC
4087         ;;
4088     esac
4089     add_asflags  -fPIC
4090 }
4091
4092 enabled pic && enable_weak_pic
4093
4094 check_cc <<EOF || die "Symbol mangling check failed."
4095 int ff_extern;
4096 EOF
4097 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4098 extern_prefix=${sym%%ff_extern*}
4099
4100 check_cc <<EOF && enable_weak inline_asm
4101 void foo(void) { __asm__ volatile ("" ::); }
4102 EOF
4103
4104 _restrict=
4105 for restrict_keyword in restrict __restrict__ __restrict; do
4106     check_cc <<EOF && _restrict=$restrict_keyword && break
4107 void foo(char * $restrict_keyword p);
4108 EOF
4109 done
4110
4111 check_cc <<EOF && enable pragma_deprecated
4112 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4113 EOF
4114
4115 check_cc <<EOF && enable attribute_packed
4116 struct { int x; } __attribute__((packed)) x;
4117 EOF
4118
4119 check_cc <<EOF && enable attribute_may_alias
4120 union { int x; } __attribute__((may_alias)) x;
4121 EOF
4122
4123 check_cc <<EOF || die "endian test failed"
4124 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4125 EOF
4126 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4127
4128 check_gas() {
4129     log "check_gas using '$as' as AS"
4130     # :vararg is used on aarch64, arm and ppc altivec
4131     check_as <<EOF || return 1
4132 .macro m n, y:vararg=0
4133 \n: .int \y
4134 .endm
4135 m x
4136 EOF
4137     # .altmacro is only used in arm asm
4138     ! enabled arm || check_as <<EOF || return 1
4139 .altmacro
4140 EOF
4141     enable gnu_as
4142     return 0
4143 }
4144
4145 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4146     nogas=:
4147     enabled_any arm aarch64 && nogas=die
4148     enabled_all ppc altivec && nogas=warn
4149     as_noop=-v
4150
4151     case $as_type in
4152         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4153         gcc)  gaspp_as_type=gas ;;
4154         *)    gaspp_as_type=$as_type ;;
4155     esac
4156
4157     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4158
4159     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4160         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4161
4162     if ! check_gas ; then
4163         as=${gas:=$as}
4164         check_gas || \
4165             $nogas "GNU assembler not found, install/update gas-preprocessor"
4166     fi
4167
4168     check_as <<EOF && enable as_func
4169 .func test
4170 .endfunc
4171 EOF
4172 fi
4173
4174 check_inline_asm inline_asm_labels '"1:\n"'
4175
4176 if enabled aarch64; then
4177     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4178     # internal assembler in clang 3.3 does not support this instruction
4179     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4180     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4181
4182     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4183
4184 elif enabled alpha; then
4185
4186     check_cflags -mieee
4187
4188 elif enabled arm; then
4189
4190     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4191     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4192     enabled thumb && check_cflags -mthumb || check_cflags -marm
4193
4194     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4195         enable vfp_args
4196     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4197         enable vfp_args
4198     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4199         case "${cross_prefix:-$cc}" in
4200             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4201             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4202 __asm__ (".eabi_attribute 28, 1");
4203 int main(void) { return 0; }
4204 EOF
4205         esac
4206         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4207     fi
4208
4209     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4210     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4211     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4212     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4213     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4214     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4215
4216     [ $target_os = linux ] || [ $target_os = android ] ||
4217         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4218             $ARCH_EXT_LIST_ARM
4219
4220     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4221
4222     check_as <<EOF && enable as_dn_directive
4223 ra .dn d0.i16
4224 .unreq ra
4225 EOF
4226
4227     # llvm's integrated assembler supports .object_arch from llvm 3.5
4228     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4229 .object_arch armv4
4230 EOF
4231
4232     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4233
4234 elif enabled mips; then
4235
4236     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4237
4238     # make sure that only an instruction set is enabled
4239     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4240
4241     if enabled mips64; then
4242         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4243             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4244                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4245     else
4246         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4247             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4248                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4249     fi
4250
4251 elif enabled parisc; then
4252
4253     if enabled gcc; then
4254         case $($cc -dumpversion) in
4255             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4256         esac
4257     fi
4258
4259 elif enabled ppc; then
4260
4261     enable local_aligned_8 local_aligned_16
4262
4263     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4264     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4265     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4266     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4267
4268     # AltiVec flags: The FSF version of GCC differs from the Apple version
4269     if enabled altivec; then
4270         check_cflags -maltivec -mabi=altivec &&
4271         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4272         check_cflags -faltivec
4273
4274         # check if our compiler supports Motorola AltiVec C API
4275         check_cc <<EOF || disable altivec
4276 $inc_altivec_h
4277 int main(void) {
4278     vector signed int v1 = (vector signed int) { 0 };
4279     vector signed int v2 = (vector signed int) { 1 };
4280     v1 = vec_add(v1, v2);
4281     return 0;
4282 }
4283 EOF
4284
4285         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4286     fi
4287
4288     if enabled vsx; then
4289         check_cflags -mvsx &&
4290         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4291     fi
4292
4293     if enabled power8; then
4294         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4295     fi
4296
4297 elif enabled x86; then
4298
4299     check_builtin rdtsc    intrin.h   "__rdtsc()"
4300     check_builtin mm_empty mmintrin.h "_mm_empty()"
4301
4302     enable local_aligned_8 local_aligned_16
4303
4304     # check whether EBP is available on x86
4305     # As 'i' is stored on the stack, this program will crash
4306     # if the base pointer is used to access it because the
4307     # base pointer is cleared in the inline assembly code.
4308     check_exec_crash <<EOF && enable ebp_available
4309 volatile int i=0;
4310 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4311 return i;
4312 EOF
4313
4314     # check whether EBX is available on x86
4315     check_inline_asm ebx_available '""::"b"(0)' &&
4316         check_inline_asm ebx_available '"":::"%ebx"'
4317
4318     # check whether xmm clobbers are supported
4319     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4320
4321     # check whether binutils is new enough to compile SSSE3/MMXEXT
4322     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4323     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4324
4325     if ! disabled_any asm mmx yasm; then
4326         if check_cmd $yasmexe --version; then
4327             enabled x86_64 && yasm_extra="-m amd64"
4328             yasm_debug="-g dwarf2"
4329         elif check_cmd nasm -v; then
4330             yasmexe=nasm
4331             yasm_debug="-g -F dwarf"
4332             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4333         fi
4334
4335         YASMFLAGS="-f $objformat $yasm_extra"
4336         enabled pic               && append YASMFLAGS "-DPIC"
4337         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4338         case "$objformat" in
4339             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4340         esac
4341
4342         check_yasm "movbe ecx, [5]" && enable yasm ||
4343             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4344         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4345         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4346         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4347         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4348         check_yasm "CPU amdnop" || disable cpunop
4349     fi
4350
4351     case "$cpu" in
4352         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4353             disable fast_clz
4354         ;;
4355     esac
4356
4357 fi
4358
4359 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4360
4361 check_ldflags -Wl,--as-needed
4362
4363 if check_func dlopen; then
4364     ldl=
4365 elif check_func dlopen -ldl; then
4366     ldl=-ldl
4367 fi
4368
4369 if ! disabled network; then
4370     check_func getaddrinfo $network_extralibs
4371     check_func inet_aton $network_extralibs
4372
4373     check_type netdb.h "struct addrinfo"
4374     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4375     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4376     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4377     check_type poll.h "struct pollfd"
4378     check_type netinet/sctp.h "struct sctp_event_subscribe"
4379     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4380     check_type netinet/in.h "struct sockaddr_in6"
4381     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4382     check_type "sys/types.h sys/socket.h" socklen_t
4383
4384     # Prefer arpa/inet.h over winsock2
4385     if check_header arpa/inet.h ; then
4386         check_func closesocket
4387     elif check_header winsock2.h ; then
4388         check_func_headers winsock2.h closesocket -lws2 &&
4389             network_extralibs="-lws2" ||
4390         { check_func_headers winsock2.h closesocket -lws2_32 &&
4391             network_extralibs="-lws2_32"; } || disable winsock2_h network
4392         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4393
4394         check_type ws2tcpip.h socklen_t
4395         check_type ws2tcpip.h "struct addrinfo"
4396         check_type ws2tcpip.h "struct group_source_req"
4397         check_type ws2tcpip.h "struct ip_mreq_source"
4398         check_type ws2tcpip.h "struct ipv6_mreq"
4399         check_type winsock2.h "struct pollfd"
4400         check_struct winsock2.h "struct sockaddr" sa_len
4401         check_type ws2tcpip.h "struct sockaddr_in6"
4402         check_type ws2tcpip.h "struct sockaddr_storage"
4403     else
4404         disable network
4405     fi
4406 fi
4407
4408 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4409 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4410 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4411 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4412
4413 case "$custom_allocator" in
4414     jemalloc)
4415         # jemalloc by default does not use a prefix
4416         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4417     ;;
4418     tcmalloc)
4419         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
4420         malloc_prefix=tc_
4421     ;;
4422 esac
4423
4424 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4425 check_func  ${malloc_prefix}memalign            && enable memalign
4426 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4427
4428 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4429     check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4430
4431 check_func  fcntl
4432 check_func  fork
4433 check_func  gethrtime
4434 check_func  getopt
4435 check_func  getrusage
4436 check_func  gettimeofday
4437 check_func  gmtime_r
4438 check_func  isatty
4439 check_func  localtime_r
4440 check_func  mach_absolute_time
4441 check_func  mkstemp
4442 check_func  mmap
4443 check_func  mprotect
4444 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4445 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4446 check_func  sched_getaffinity
4447 check_func  setrlimit
4448 check_func  strerror_r
4449 check_func  sysconf
4450 check_func  sysctl
4451 check_func  usleep
4452
4453 check_func_headers io.h setmode
4454 check_func_headers stdlib.h getenv
4455
4456 check_func_headers windows.h CoTaskMemFree -lole32
4457 check_func_headers windows.h GetProcessAffinityMask
4458 check_func_headers windows.h GetProcessTimes
4459 check_func_headers windows.h GetSystemTimeAsFileTime
4460 check_func_headers windows.h LoadLibrary
4461 check_func_headers windows.h MapViewOfFile
4462 check_func_headers windows.h SetConsoleTextAttribute
4463 check_func_headers windows.h Sleep
4464 check_func_headers windows.h VirtualAlloc
4465 check_struct windows.h "CONDITION_VARIABLE" Ptr
4466
4467 check_header direct.h
4468 check_header dlfcn.h
4469 check_header d3d11.h
4470 check_header dxva.h
4471 check_header dxva2api.h
4472 check_header io.h
4473 check_header mach/mach_time.h
4474 check_header malloc.h
4475 check_header poll.h
4476 check_header sys/mman.h
4477 check_header sys/param.h
4478 check_header sys/resource.h
4479 check_header sys/select.h
4480 check_header sys/time.h
4481 check_header sys/un.h
4482 check_header unistd.h
4483 check_header valgrind/valgrind.h
4484 check_header vdpau/vdpau.h
4485 check_header vdpau/vdpau_x11.h
4486 check_header VideoDecodeAcceleration/VDADecoder.h
4487 check_header windows.h
4488 check_header X11/extensions/XvMClib.h
4489
4490 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4491 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4492 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4493
4494 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4495
4496 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4497 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4498 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4499
4500 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4501 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4502 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4503 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4504
4505 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4506
4507 if ! disabled w32threads && ! enabled pthreads; then
4508     check_func_headers "windows.h process.h" _beginthreadex &&
4509         enable w32threads || disable w32threads
4510 fi
4511
4512 # check for some common methods of building with pthread support
4513 # do this before the optional library checks as some of them require pthreads
4514 if ! disabled pthreads && ! enabled w32threads; then
4515     enable pthreads
4516     if check_func pthread_join -pthread; then
4517         add_cflags -pthread
4518         add_extralibs -pthread
4519     elif check_func pthread_join -pthreads; then
4520         add_cflags -pthreads
4521         add_extralibs -pthreads
4522     elif check_func pthread_join -lpthreadGC2; then
4523         add_extralibs -lpthreadGC2
4524     elif check_lib pthread.h pthread_join -lpthread; then
4525         :
4526     elif ! check_func pthread_join; then
4527         disable pthreads
4528     fi
4529 fi
4530
4531 enabled pthreads &&
4532     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
4533
4534 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4535 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4536
4537 check_lib math.h sin -lm && LIBM="-lm"
4538 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4539
4540 atan2f_args=2
4541 ldexpf_args=2
4542 powf_args=2
4543
4544 for func in $MATH_FUNCS; do
4545     eval check_mathfunc $func \${${func}_args:-1}
4546 done
4547
4548 # these are off by default, so fail if requested and not available
4549 enabled avisynth          && { check_lib2 "avisynth/avisynth_c.h windows.h" LoadLibrary ||
4550                                check_lib2 "avxsynth/avxsynth_c.h dlfcn.h" dlopen -ldl   ||
4551                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4552 enabled cuda              && check_lib cuda.h cuInit -lcuda
4553 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4554 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4555 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4556 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4557 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4558 enabled libfdk_aac        && require_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4559 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4560 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4561 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4562                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4563                                done || die "ERROR: libgsm not found"; }
4564 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4565 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4566 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
4567 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4568 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4569 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4570 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4571 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4572 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
4573 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4574                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4575 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4576 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4577 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4578 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4579 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
4580 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4581 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4582 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4583 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4584 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4585 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4586 enabled libvpx            && require_pkg_config "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version && {
4587     enabled libvpx_vp8_decoder && {
4588         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
4589             disable libvpx_vp8_decoder;
4590     }
4591     enabled libvpx_vp8_encoder && {
4592         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
4593             disable libvpx_vp8_encoder;
4594     }
4595     enabled libvpx_vp9_decoder && {
4596         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
4597             disable libvpx_vp9_decoder;
4598     }
4599     enabled libvpx_vp9_encoder && {
4600         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
4601             disable libvpx_vp9_encoder;
4602     }
4603     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
4604         die "libvpx enabled but no supported decoders found"
4605     fi
4606 }
4607 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4608 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4609 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4610                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4611                                die "ERROR: libx264 version must be >= 0.118."; } &&
4612                              { check_cpp_condition x264.h "X264_MPEG2" &&
4613                                enable libx262; }
4614 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
4615                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
4616                                die "ERROR: libx265 version must be >= 57."; }
4617 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4618 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4619 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4620                                 { ! enabled cross_compile && {
4621                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
4622                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
4623                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
4624                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
4625                                die "ERROR: mmal not found"; }
4626 enabled omx_rpi && enable omx
4627 enabled omx               && { check_header OMX_Core.h ||
4628                                 { ! enabled cross_compile && enabled omx_rpi && {
4629                                     add_cflags -isystem/opt/vc/include/IL ; }
4630                                 check_header OMX_Core.h ; } ||
4631                                die "ERROR: OpenMAX IL headers not found"; }
4632 enabled openssl           && { check_pkg_config openssl openssl/ssl.h SSL_library_init && {
4633                                add_cflags $openssl_cflags && add_extralibs $openssl_libs; }||
4634                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4635                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4636                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4637                                die "ERROR: openssl not found"; }
4638
4639 if enabled gnutls; then
4640     { check_lib2 gmp.h mpz_export -lgmp && enable gmp; } ||
4641     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4642 fi
4643
4644 # libdc1394 check
4645 if enabled libdc1394; then
4646     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
4647         enable libdc1394_2; } ||
4648     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4649         enable libdc1394_1; } ||
4650     die "ERROR: No version of libdc1394 found "
4651 fi
4652
4653 if enabled nvenc; then
4654     enabled cuda || check_header cuda.h || die "ERROR: cuda.h not found."
4655     check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."
4656     check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 5" ||
4657         die "ERROR: NVENC API version 4 or older is not supported"
4658 fi
4659
4660 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4661     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4662     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4663     enable sdl
4664 fi
4665
4666 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4667 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4668
4669 check_header linux/fb.h
4670 check_header linux/videodev2.h
4671 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4672
4673 check_header AVFoundation/AVFoundation.h &&
4674     check_objcflags -fobjc-arc &&
4675     add_extralibs -framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia ||
4676     disable AVFoundation_AVFoundation_h
4677
4678 check_header sys/videoio.h
4679
4680 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4681 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4682 # w32api 3.12 had it defined wrong
4683 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4684
4685 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4686 { check_header dev/bktr/ioctl_meteor.h &&
4687   check_header dev/bktr/ioctl_bt848.h; } ||
4688 { check_header machine/ioctl_meteor.h &&
4689   check_header machine/ioctl_bt848.h; } ||
4690 { check_header dev/video/meteor/ioctl_meteor.h &&
4691   check_header dev/video/bktr/ioctl_bt848.h; } ||
4692 check_header dev/ic/bt8xx.h
4693
4694 check_header sndio.h
4695 check_header sys/soundcard.h
4696 check_header soundcard.h
4697
4698 enabled_any alsa_indev alsa_outdev &&
4699     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4700
4701 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4702     check_func jack_port_get_latency_range -ljack
4703
4704 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4705
4706 if enabled libcdio; then
4707     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4708     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4709     die "ERROR: No usable libcdio/cdparanoia found"
4710 fi
4711
4712 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4713
4714 if enabled libxcb || enabled x11grab && ! disabled libxcb; then
4715     check_pkg_config xcb-shape xcb/shape.h xcb_shape_rectangles || {
4716         enabled libxcb && die "ERROR: libxcb not found";
4717     } && disable x11grab && enable libxcb
4718
4719     disabled libxcb_shm ||
4720         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
4721             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
4722         } && check_header sys/shm.h && enable libxcb_shm
4723
4724     disabled libxcb_xfixes ||
4725         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
4726             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
4727         } && enable libxcb_xfixes
4728
4729     add_cflags "$xcb_event_cflags $xcb_shm_cflags $xcb_xfixes_cflags"
4730     add_extralibs "$xcb_event_libs $xcb_shm_libs $xcb_xfixes_libs"
4731 fi
4732
4733 if enabled x11grab; then
4734     enabled xlib || die "ERROR: Xlib not found"
4735     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
4736     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
4737 fi
4738
4739 enabled vaapi &&
4740     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
4741     disable vaapi
4742
4743 if enabled vaapi ; then
4744     enabled xlib &&
4745     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
4746     enable vaapi_x11
4747
4748     check_lib2 "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
4749     enable vaapi_drm
4750 fi
4751
4752 enabled vdpau &&
4753     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4754     disable vdpau
4755
4756 enabled vdpau && enabled xlib &&
4757     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4758     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4759     enable vdpau_x11
4760
4761 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4762
4763 # add some useful compiler flags if supported
4764 check_cflags -Wdeclaration-after-statement
4765 check_cflags -Wall
4766 check_cflags -Wdisabled-optimization
4767 check_cflags -Wpointer-arith
4768 check_cflags -Wredundant-decls
4769 check_cflags -Wwrite-strings
4770 check_cflags -Wtype-limits
4771 check_cflags -Wundef
4772 check_cflags -Wmissing-prototypes
4773 check_cflags -Wstrict-prototypes
4774 enabled extra_warnings && check_cflags -Winline
4775 enabled extra_warnings && check_cflags -Wcast-qual
4776
4777 check_disable_warning(){
4778     warning_flag=-W${1#-Wno-}
4779     test_cflags $warning_flag && add_cflags $1
4780 }
4781
4782 check_disable_warning -Wno-parentheses
4783 check_disable_warning -Wno-switch
4784 check_disable_warning -Wno-format-zero-length
4785 check_disable_warning -Wno-pointer-sign
4786
4787 # add some linker flags
4788 check_ldflags -Wl,--warn-common
4789 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4790 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
4791 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4792
4793 # add some strip flags
4794 # -wN '..@*' is more selective than -x, but not available everywhere.
4795 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4796
4797 enabled neon_clobber_test &&
4798     check_ldflags -Wl,--wrap,avcodec_open2              \
4799                   -Wl,--wrap,avcodec_decode_audio4      \
4800                   -Wl,--wrap,avcodec_decode_video2      \
4801                   -Wl,--wrap,avcodec_decode_subtitle2   \
4802                   -Wl,--wrap,avcodec_encode_audio2      \
4803                   -Wl,--wrap,avcodec_encode_video2      \
4804                   -Wl,--wrap,avcodec_encode_subtitle    \
4805                   -Wl,--wrap,avresample_convert ||
4806     disable neon_clobber_test
4807
4808 enabled xmm_clobber_test &&
4809     check_ldflags -Wl,--wrap,avcodec_open2              \
4810                   -Wl,--wrap,avcodec_decode_audio4      \
4811                   -Wl,--wrap,avcodec_decode_video2      \
4812                   -Wl,--wrap,avcodec_decode_subtitle2   \
4813                   -Wl,--wrap,avcodec_encode_audio2      \
4814                   -Wl,--wrap,avcodec_encode_video2      \
4815                   -Wl,--wrap,avcodec_encode_subtitle    \
4816                   -Wl,--wrap,avresample_convert         \
4817                   -Wl,--wrap,sws_scale ||
4818     disable xmm_clobber_test
4819
4820 echo "X { local: *; };" > $TMPV
4821 if test_ldflags -Wl,--version-script,$TMPV; then
4822     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4823 elif test_ldflags -Wl,-M,$TMPV; then
4824     append SHFLAGS '-Wl,-M,\$(SUBDIR)lib\$(NAME).ver-sol2'
4825 fi
4826
4827 check_cc <<EOF && enable symver_asm_label
4828 void ff_foo(void) __asm__ ("av_foo@VERSION");
4829 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4830 EOF
4831     check_cc <<EOF && enable symver_gnu_asm
4832 __asm__(".symver ff_foo,av_foo@VERSION");
4833 void ff_foo(void) {}
4834 EOF
4835
4836 if [ -z "$optflags" ]; then
4837     if enabled small; then
4838         optflags=$cflags_size
4839     elif enabled optimizations; then
4840         optflags=$cflags_speed
4841     else
4842         optflags=$cflags_noopt
4843     fi
4844 fi
4845
4846 check_optflags(){
4847     check_cflags "$@"
4848     enabled lto && check_ldflags "$@"
4849 }
4850
4851
4852 if enabled lto; then
4853     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4854     check_cflags  -flto
4855     check_ldflags -flto $cpuflags
4856 fi
4857
4858 check_optflags $optflags
4859 check_optflags -fno-math-errno
4860 check_optflags -fno-signed-zeros
4861
4862 if enabled icc; then
4863     # Just warnings, no remarks
4864     check_cflags -w1
4865     # -wd: Disable following warnings
4866     # 144, 167, 556: -Wno-pointer-sign
4867     # 1292: attribute "foo" ign