46f34e4e78a4294bb4f72b91a463492af542c93a
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89   --enable-rpath           use rpath when linking programs [USE WITH CARE]
90
91 Licensing options:
92   --enable-gpl             allow use of GPL code, the resulting libs
93                            and binaries will be under GPL [no]
94   --enable-version3        upgrade (L)GPL to version 3 [no]
95   --enable-nonfree         allow use of nonfree code, the resulting libs
96                            and binaries will be unredistributable [no]
97
98 Configuration options:
99   --disable-static         do not build static libraries [no]
100   --enable-shared          build shared libraries [no]
101   --enable-small           optimize for size instead of speed
102   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
103   --enable-gray            enable full grayscale support (slower color)
104   --disable-swscale-alpha  disable alpha channel support in swscale
105   --disable-all            disable building components, libraries and programs
106
107 Program options:
108   --disable-programs       do not build command line programs
109   --disable-avconv         disable avconv build
110   --disable-avplay         disable avplay build
111   --disable-avprobe        disable avprobe build
112   --disable-avserver       deprecated, does nothing
113
114 Component options:
115   --disable-doc            do not build documentation
116   --disable-avdevice       disable libavdevice build
117   --disable-avcodec        disable libavcodec build
118   --disable-avformat       disable libavformat build
119   --disable-avutil         disable libavutil build
120   --disable-swscale        disable libswscale build
121   --disable-avfilter       disable video filter support [no]
122   --disable-avresample     disable libavresample build [no]
123   --disable-pthreads       disable pthreads [auto]
124   --disable-w32threads     disable Win32 threads [auto]
125   --disable-network        disable network support [no]
126   --disable-dct            disable DCT code
127   --disable-error-resilience disable error resilience code
128   --disable-lsp            disable LSP code
129   --disable-lzo            disable LZO decoder code
130   --disable-mdct           disable MDCT code
131   --disable-rdft           disable RDFT code
132   --disable-fft            disable FFT code
133   --disable-faan           disable floating point AAN (I)DCT code
134
135 Hardware accelerators:
136   --enable-d3d11va         enable D3D11VA code
137   --enable-dxva2           enable DXVA2 code
138   --enable-vaapi           enable VAAPI code
139   --enable-vda             enable VDA code
140   --enable-vdpau           enable VDPAU code
141
142 Individual component options:
143   --disable-everything     disable all components listed below
144   --disable-encoder=NAME   disable encoder NAME
145   --enable-encoder=NAME    enable encoder NAME
146   --disable-encoders       disable all encoders
147   --disable-decoder=NAME   disable decoder NAME
148   --enable-decoder=NAME    enable decoder NAME
149   --disable-decoders       disable all decoders
150   --disable-hwaccel=NAME   disable hwaccel NAME
151   --enable-hwaccel=NAME    enable hwaccel NAME
152   --disable-hwaccels       disable all hwaccels
153   --disable-muxer=NAME     disable muxer NAME
154   --enable-muxer=NAME      enable muxer NAME
155   --disable-muxers         disable all muxers
156   --disable-demuxer=NAME   disable demuxer NAME
157   --enable-demuxer=NAME    enable demuxer NAME
158   --disable-demuxers       disable all demuxers
159   --enable-parser=NAME     enable parser NAME
160   --disable-parser=NAME    disable parser NAME
161   --disable-parsers        disable all parsers
162   --enable-bsf=NAME        enable bitstream filter NAME
163   --disable-bsf=NAME       disable bitstream filter NAME
164   --disable-bsfs           disable all bitstream filters
165   --enable-protocol=NAME   enable protocol NAME
166   --disable-protocol=NAME  disable protocol NAME
167   --disable-protocols      disable all protocols
168   --enable-indev=NAME      enable input device NAME
169   --disable-indev=NAME     disable input device NAME
170   --disable-indevs         disable input devices
171   --enable-outdev=NAME     enable output device NAME
172   --disable-outdev=NAME    disable output device NAME
173   --disable-outdevs        disable output devices
174   --disable-devices        disable all devices
175   --enable-filter=NAME     enable filter NAME
176   --disable-filter=NAME    disable filter NAME
177   --disable-filters        disable all filters
178
179 External library support:
180   --enable-avisynth        enable reading of AviSynth script files [no]
181   --enable-bzlib           enable bzlib [autodetect]
182   --enable-cuda            enable dynamically linked CUDA [no]
183   --enable-frei0r          enable frei0r video filtering
184   --enable-gnutls          enable gnutls [no]
185   --enable-libbs2b         enable bs2b DSP library [no]
186   --enable-libcdio         enable audio CD grabbing with libcdio
187   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
188                            and libraw1394 [no]
189   --enable-libdcadec       enable DCA decoding via libdcadec [no]
190   --enable-libfaac         enable AAC encoding via libfaac [no]
191   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
192   --enable-libfreetype     enable libfreetype [no]
193   --enable-libgsm          enable GSM de/encoding via libgsm [no]
194   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
195   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
196   --enable-libmfx          enable HW acceleration through libmfx
197   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
198   --enable-libnpp          enable NVIDIA Performance Primitives-based code [no]
199   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
200   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
201   --enable-libopencv       enable video filtering via libopencv [no]
202   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
203   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
204   --enable-libopus         enable Opus de/encoding via libopus [no]
205   --enable-libpulse        enable Pulseaudio input via libpulse [no]
206   --enable-librtmp         enable RTMP[E] support via librtmp [no]
207   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
208   --enable-libsnappy       enable Snappy compression [no]
209   --enable-libspeex        enable Speex de/encoding via libspeex [no]
210   --enable-libtheora       enable Theora encoding via libtheora [no]
211   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
212   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
213   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
214   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
215   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
216   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
217   --enable-libwebp         enable WebP encoding via libwebp [no]
218   --enable-libx264         enable H.264 encoding via x264 [no]
219   --enable-libx265         enable HEVC encoding via x265 [no]
220   --enable-libxavs         enable AVS encoding via xavs [no]
221   --enable-libxcb          enable X11 grabbing using XCB [no]
222   --enable-libxcb-shm      enable X11 grabbing shm communication [auto]
223   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [auto]
224   --enable-libxvid         enable Xvid encoding via xvidcore,
225                            native MPEG-4/Xvid encoder exists [no]
226   --enable-mmal            enable decoding via MMAL [no]
227   --enable-nvenc           enable encoding via NVENC [no]
228   --enable-openssl         enable openssl [no]
229   --enable-x11grab         enable X11 grabbing (legacy) [no]
230   --enable-zlib            enable zlib [autodetect]
231
232 Toolchain options:
233   --arch=ARCH              select architecture [$arch]
234   --cpu=CPU                select the minimum required CPU (affects
235                            instruction selection, may crash on older CPUs)
236   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
237   --enable-cross-compile   assume a cross-compiler is used
238   --sysroot=PATH           root of cross-build tree
239   --sysinclude=PATH        location of cross-build system headers
240   --target-os=OS           compiler targets OS [$target_os]
241   --target-exec=CMD        command to run executables on target
242   --target-path=DIR        path to view of build directory on target
243   --target-samples=DIR     path to samples directory on target
244   --toolchain=NAME         set tool defaults according to NAME
245   --nm=NM                  use nm tool
246   --ar=AR                  use archive tool AR [$ar_default]
247   --as=AS                  use assembler AS [$as_default]
248   --cc=CC                  use C compiler CC [$cc_default]
249   --objcc=OCC              use ObjC compiler OCC [$cc_default]
250   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
251   --ld=LD                  use linker LD
252   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
253   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
254   --host-cc=HOSTCC         use host C compiler HOSTCC
255   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
256   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
257   --host-ld=HOSTLD         use host linker HOSTLD
258   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
259   --host-libs=HLIBS        use libs HLIBS when linking for host
260   --host-os=OS             compiler host OS [$target_os]
261   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
262   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
263   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
264   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
265   --extra-libs=ELIBS       add ELIBS [$ELIBS]
266   --extra-version=STRING   version string suffix []
267   --optflags=OPTFLAGS      override optimization-related compiler flags
268   --build-suffix=SUFFIX    library name suffix []
269   --enable-pic             build position-independent code
270   --enable-thumb           compile for Thumb instruction set
271   --enable-lto             use link-time optimization
272   --env="ENV=override"     override the environment variables
273
274 Advanced options (experts only):
275   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
276   --custom-allocator=NAME  use a supported custom allocator
277   --disable-symver         disable symbol versioning
278   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
279   --disable-safe-bitstream-reader
280                            disable buffer boundary checking in bitreaders
281                            (faster, but may crash)
282   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
283   --enable-sram            allow use of on-chip SRAM
284
285 Optimization options (experts only):
286   --disable-asm            disable all assembly optimizations
287   --disable-altivec        disable AltiVec optimizations
288   --disable-vsx            disable VSX optimizations
289   --disable-power8         disable POWER8 optimizations
290   --disable-amd3dnow       disable 3DNow! optimizations
291   --disable-amd3dnowext    disable 3DNow! extended optimizations
292   --disable-mmx            disable MMX optimizations
293   --disable-mmxext         disable MMXEXT optimizations
294   --disable-sse            disable SSE optimizations
295   --disable-sse2           disable SSE2 optimizations
296   --disable-sse3           disable SSE3 optimizations
297   --disable-ssse3          disable SSSE3 optimizations
298   --disable-sse4           disable SSE4 optimizations
299   --disable-sse42          disable SSE4.2 optimizations
300   --disable-avx            disable AVX optimizations
301   --disable-xop            disable XOP optimizations
302   --disable-fma3           disable FMA3 optimizations
303   --disable-fma4           disable FMA4 optimizations
304   --disable-avx2           disable AVX2 optimizations
305   --disable-armv5te        disable armv5te optimizations
306   --disable-armv6          disable armv6 optimizations
307   --disable-armv6t2        disable armv6t2 optimizations
308   --disable-vfp            disable VFP optimizations
309   --disable-neon           disable NEON optimizations
310   --disable-inline-asm     disable use of inline assembly
311   --disable-yasm           disable use of nasm/yasm assembly
312
313 Developer options (useful when working on Libav itself):
314   --disable-debug          disable debugging symbols
315   --enable-debug=LEVEL     set the debug level [$debuglevel]
316   --disable-optimizations  disable compiler optimizations
317   --enable-extra-warnings  enable more compiler warnings
318   --samples=PATH           location of test samples for FATE, if not set use
319                            \$LIBAV_SAMPLES at make invocation time.
320   --enable-neon-clobber-test check NEON registers for clobbering (should be
321                            used only for debugging purposes)
322   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
323                            should be used only for debugging purposes)
324   --enable-random          randomly enable/disable components
325   --disable-random
326   --enable-random=LIST     randomly enable/disable specific components or
327   --disable-random=LIST    component groups. LIST is a comma-separated list
328                            of NAME[:PROB] entries where NAME is a component
329                            (group) and PROB the probability associated with
330                            NAME (default 0.5).
331   --random-seed=VALUE      seed value for --enable/disable-random
332   --disable-valgrind-backtrace do not print a backtrace under Valgrind
333                            (only applies to --disable-optimizations builds)
334
335 NOTE: Object files are built at the place where configure is launched.
336 EOF
337   exit 0
338 }
339
340 quotes='""'
341
342 log(){
343     echo "$@" >> $logfile
344 }
345
346 log_file(){
347     log BEGIN $1
348     i=1
349     while read line; do
350         printf '%5s   %s\n' "${i}" "${line}"
351         i=$(($i+1))
352     done < $1 >> $logfile
353     log END $1
354 }
355
356 echolog(){
357     log "$@"
358     echo "$@"
359 }
360
361 warn(){
362     log "WARNING: $*"
363     WARNINGS="${WARNINGS}WARNING: $*\n"
364 }
365
366 die(){
367     echolog "$@"
368     cat <<EOF
369
370 If you think configure made a mistake, make sure you are using the latest
371 version from Git.  If the latest version fails, report the problem to the
372 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
373 EOF
374     if disabled logging; then
375         cat <<EOF
376 Rerun configure with logging enabled (do not use --disable-logging), and
377 include the log this produces with your report.
378 EOF
379     else
380         cat <<EOF
381 Include the log file "$logfile" produced by configure as this will help
382 solving the problem.
383 EOF
384     fi
385     exit 1
386 }
387
388 # Avoid locale weirdness, besides we really just want to translate ASCII.
389 toupper(){
390     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
391 }
392
393 tolower(){
394     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
395 }
396
397 c_escape(){
398     echo "$*" | sed 's/["\\]/\\\0/g'
399 }
400
401 sh_quote(){
402     v=$(echo "$1" | sed "s/'/'\\\\''/g")
403     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
404     echo "$v"
405 }
406
407 cleanws(){
408     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
409 }
410
411 filter(){
412     pat=$1
413     shift
414     for v; do
415         eval "case $v in $pat) echo $v ;; esac"
416     done
417 }
418
419 filter_out(){
420     pat=$1
421     shift
422     for v; do
423         eval "case $v in $pat) ;; *) echo $v ;; esac"
424     done
425 }
426
427 map(){
428     m=$1
429     shift
430     for v; do eval $m; done
431 }
432
433 add_suffix(){
434     suffix=$1
435     shift
436     for v; do echo ${v}${suffix}; done
437 }
438
439 set_all(){
440     value=$1
441     shift
442     for var in $*; do
443         eval $var=$value
444     done
445 }
446
447 set_weak(){
448     value=$1
449     shift
450     for var; do
451         eval : \${$var:=$value}
452     done
453 }
454
455 sanitize_var_name(){
456     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
457 }
458
459 set_safe(){
460     var=$1
461     shift
462     eval $(sanitize_var_name "$var")='$*'
463 }
464
465 get_safe(){
466     eval echo \$$(sanitize_var_name "$1")
467 }
468
469 pushvar(){
470     for pvar in $*; do
471         eval level=\${${pvar}_level:=0}
472         eval ${pvar}_${level}="\$$pvar"
473         eval ${pvar}_level=$(($level+1))
474     done
475 }
476
477 popvar(){
478     for pvar in $*; do
479         eval level=\${${pvar}_level:-0}
480         test $level = 0 && continue
481         eval level=$(($level-1))
482         eval $pvar="\${${pvar}_${level}}"
483         eval ${pvar}_level=$level
484         eval unset ${pvar}_${level}
485     done
486 }
487
488 enable(){
489     set_all yes $*
490 }
491
492 disable(){
493     set_all no $*
494 }
495
496 enable_weak(){
497     set_weak yes $*
498 }
499
500 disable_weak(){
501     set_weak no $*
502 }
503
504 enable_safe(){
505     for var; do
506         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
507     done
508 }
509
510 disable_safe(){
511     for var; do
512         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
513     done
514 }
515
516 do_enable_deep(){
517     for var; do
518         enabled $var && continue
519         eval sel="\$${var}_select"
520         eval sgs="\$${var}_suggest"
521         pushvar var sgs
522         enable_deep $sel
523         popvar sgs
524         enable_deep_weak $sgs
525         popvar var
526     done
527 }
528
529 enable_deep(){
530     do_enable_deep $*
531     enable $*
532 }
533
534 enable_deep_weak(){
535     for var; do
536         disabled $var && continue
537         pushvar var
538         do_enable_deep $var
539         popvar var
540         enable_weak $var
541     done
542 }
543
544 enabled(){
545     test "${1#!}" = "$1" && op== || op=!=
546     eval test "x\$${1#!}" $op "xyes"
547 }
548
549 disabled(){
550     test "${1#!}" = "$1" && op== || op=!=
551     eval test "x\$${1#!}" $op "xno"
552 }
553
554 enabled_all(){
555     for opt; do
556         enabled $opt || return 1
557     done
558 }
559
560 disabled_all(){
561     for opt; do
562         disabled $opt || return 1
563     done
564 }
565
566 enabled_any(){
567     for opt; do
568         enabled $opt && return 0
569     done
570 }
571
572 disabled_any(){
573     for opt; do
574         disabled $opt && return 0
575     done
576     return 1
577 }
578
579 set_default(){
580     for opt; do
581         eval : \${$opt:=\$${opt}_default}
582     done
583 }
584
585 is_in(){
586     value=$1
587     shift
588     for var in $*; do
589         [ $var = $value ] && return 0
590     done
591     return 1
592 }
593
594 do_check_deps(){
595     for cfg; do
596         cfg="${cfg#!}"
597         enabled ${cfg}_checking && die "Circular dependency for $cfg."
598         disabled ${cfg}_checking && continue
599         enable ${cfg}_checking
600         append allopts $cfg
601
602         eval dep_all="\$${cfg}_deps"
603         eval dep_any="\$${cfg}_deps_any"
604         eval dep_sel="\$${cfg}_select"
605         eval dep_sgs="\$${cfg}_suggest"
606         eval dep_ifa="\$${cfg}_if"
607         eval dep_ifn="\$${cfg}_if_any"
608
609         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
610         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
611         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
612
613         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
614         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
615         enabled_all  $dep_all || disable $cfg
616         enabled_any  $dep_any || disable $cfg
617         disabled_any $dep_sel && disable $cfg
618
619         if enabled $cfg; then
620             enable_deep $dep_sel
621             enable_deep_weak $dep_sgs
622         fi
623
624         disable ${cfg}_checking
625     done
626 }
627
628 check_deps(){
629     unset allopts
630
631     do_check_deps "$@"
632
633     for cfg in $allopts; do
634         enabled $cfg || continue
635         eval dep_extralibs="\$${cfg}_extralibs"
636         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
637     done
638 }
639
640 print_config(){
641     pfx=$1
642     files=$2
643     shift 2
644     map 'eval echo "$v \${$v:-no}"' "$@" |
645     awk "BEGIN { split(\"$files\", files) }
646         {
647             c = \"$pfx\" toupper(\$1);
648             v = \$2;
649             sub(/yes/, 1, v);
650             sub(/no/,  0, v);
651             for (f in files) {
652                 file = files[f];
653                 if (file ~ /\\.h\$/) {
654                     printf(\"#define %s %d\\n\", c, v) >>file;
655                 } else if (file ~ /\\.asm\$/) {
656                     printf(\"%%define %s %d\\n\", c, v) >>file;
657                 } else if (file ~ /\\.mak\$/) {
658                     n = -v ? \"\" : \"!\";
659                     printf(\"%s%s=yes\\n\", n, c) >>file;
660                 }
661             }
662         }"
663 }
664
665 print_enabled(){
666     suf=$1
667     shift
668     for v; do
669         enabled $v && printf "%s\n" ${v%$suf};
670     done
671 }
672
673 append(){
674     var=$1
675     shift
676     eval "$var=\"\$$var $*\""
677 }
678
679 prepend(){
680     var=$1
681     shift
682     eval "$var=\"$* \$$var\""
683 }
684
685 unique(){
686     var=$1
687     uniq_list=""
688     for tok in $(eval echo \$$var); do
689         uniq_list="$(filter_out $tok $uniq_list) $tok"
690     done
691     eval "$var=\"${uniq_list}\""
692 }
693
694 add_cppflags(){
695     append CPPFLAGS "$@"
696 }
697
698 add_cflags(){
699     append CFLAGS $($cflags_filter "$@")
700 }
701
702 add_asflags(){
703     append ASFLAGS $($asflags_filter "$@")
704 }
705
706 add_objcflags(){
707     append OBJCFLAGS $($objcflags_filter "$@")
708 }
709
710 add_ldflags(){
711     append LDFLAGS $($ldflags_filter "$@")
712 }
713
714 add_ldexeflags(){
715     append LDEXEFLAGS $($ldflags_filter "$@")
716 }
717
718 add_stripflags(){
719     append STRIPFLAGS "$@"
720 }
721
722 add_extralibs(){
723     prepend extralibs $($ldflags_filter "$@")
724 }
725
726 add_host_cppflags(){
727     append host_cppflags "$@"
728 }
729
730 add_host_cflags(){
731     append host_cflags $($host_cflags_filter "$@")
732 }
733
734 add_host_ldflags(){
735     append host_ldflags $($host_ldflags_filter "$@")
736 }
737
738 add_compat(){
739     append compat_objs $1
740     shift
741     map 'add_cppflags -D$v' "$@"
742 }
743
744 check_cmd(){
745     log "$@"
746     "$@" >> $logfile 2>&1
747 }
748
749 cc_o(){
750     eval printf '%s\\n' $CC_O
751 }
752
753 cc_e(){
754     eval printf '%s\\n' $CC_E
755 }
756
757 check_cc(){
758     log check_cc "$@"
759     cat > $TMPC
760     log_file $TMPC
761     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
762 }
763
764 check_objcc(){
765     log check_objcc "$@"
766     cat > $TMPC
767     log_file $TMPC
768     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
769 }
770
771 check_cpp(){
772     log check_cpp "$@"
773     cat > $TMPC
774     log_file $TMPC
775     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
776 }
777
778 as_o(){
779     eval printf '%s\\n' $AS_O
780 }
781
782 check_as(){
783     log check_as "$@"
784     cat > $TMPS
785     log_file $TMPS
786     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
787 }
788
789 check_inline_asm(){
790     log check_inline_asm "$@"
791     name="$1"
792     code="$2"
793     shift 2
794     disable $name
795     check_cc "$@" <<EOF && enable $name
796 void foo(void){ __asm__ volatile($code); }
797 EOF
798 }
799
800 check_insn(){
801     log check_insn "$@"
802     check_inline_asm ${1}_inline "\"$2\""
803     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
804 }
805
806 check_yasm(){
807     log check_yasm "$@"
808     echo "$1" > $TMPS
809     log_file $TMPS
810     shift 1
811     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
812 }
813
814 ld_o(){
815     eval printf '%s\\n' $LD_O
816 }
817
818 check_ld(){
819     log check_ld "$@"
820     flags=$(filter_out '-l*' "$@")
821     libs=$(filter '-l*' "$@")
822     check_cc $($cflags_filter $flags) || return
823     flags=$($ldflags_filter $flags)
824     libs=$($ldflags_filter $libs)
825     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
826 }
827
828 print_include(){
829     hdr=$1
830     test "${hdr%.h}" = "${hdr}" &&
831         echo "#include $hdr"    ||
832         echo "#include <$hdr>"
833 }
834
835 check_code(){
836     log check_code "$@"
837     check=$1
838     headers=$2
839     code=$3
840     shift 3
841     {
842         for hdr in $headers; do
843             print_include $hdr
844         done
845         echo "int main(void) { $code; return 0; }"
846     } | check_$check "$@"
847 }
848
849 check_cppflags(){
850     log check_cppflags "$@"
851     check_cc "$@" <<EOF && append CPPFLAGS "$@"
852 int x;
853 EOF
854 }
855
856 test_cflags(){
857     log test_cflags "$@"
858     set -- $($cflags_filter "$@")
859     check_cc "$@" <<EOF
860 int x;
861 EOF
862 }
863
864 check_cflags(){
865     log check_cflags "$@"
866     test_cflags "$@" && add_cflags "$@"
867 }
868
869 test_objcflags(){
870     log test_cflags "$@"
871     set -- $($cflags_filter "$@")
872     check_objcc "$@" <<EOF
873 int x;
874 EOF
875 }
876
877 check_objcflags(){
878     log check_cflags "$@"
879     test_objcflags "$@" && add_objcflags "$@"
880 }
881
882 test_ldflags(){
883     log test_ldflags "$@"
884     check_ld "$@" <<EOF
885 int main(void){ return 0; }
886 EOF
887 }
888
889 check_ldflags(){
890     log check_ldflags "$@"
891     test_ldflags "$@" && add_ldflags "$@"
892 }
893
894 test_stripflags(){
895     log test_stripflags "$@"
896     # call check_cc to get a fresh TMPO
897     check_cc <<EOF
898 int main(void) { return 0; }
899 EOF
900     check_cmd $strip $STRIPFLAGS "$@" $TMPO
901 }
902
903 check_stripflags(){
904     log check_stripflags "$@"
905     test_stripflags "$@" && add_stripflags "$@"
906 }
907
908 check_header(){
909     log check_header "$@"
910     header=$1
911     shift
912     disable_safe $header
913     check_cpp "$@" <<EOF && enable_safe $header
914 #include <$header>
915 int x;
916 EOF
917 }
918
919 check_func(){
920     log check_func "$@"
921     func=$1
922     shift
923     disable $func
924     check_ld "$@" <<EOF && enable $func
925 extern int $func();
926 int main(void){ $func(); }
927 EOF
928 }
929
930 check_mathfunc(){
931     log check_mathfunc "$@"
932     func=$1
933     narg=$2
934     shift 2
935     test $narg = 2 && args="f, g" || args="f"
936     disable $func
937     check_ld "$@" <<EOF && enable $func
938 #include <math.h>
939 float foo(float f, float g) { return $func($args); }
940 int main(void){ return 0; }
941 EOF
942 }
943
944 check_func_headers(){
945     log check_func_headers "$@"
946     headers=$1
947     funcs=$2
948     shift 2
949     {
950         for hdr in $headers; do
951             print_include $hdr
952         done
953         for func in $funcs; do
954             echo "long check_$func(void) { return (long) $func; }"
955         done
956         echo "int main(void) { return 0; }"
957     } | check_ld "$@" && enable $funcs && enable_safe $headers
958 }
959
960 check_cpp_condition(){
961     log check_cpp_condition "$@"
962     header=$1
963     condition=$2
964     shift 2
965     check_cpp "$@" <<EOF
966 #include <$header>
967 #if !($condition)
968 #error "unsatisfied condition: $condition"
969 #endif
970 EOF
971 }
972
973 check_lib(){
974     log check_lib "$@"
975     header="$1"
976     func="$2"
977     shift 2
978     check_header $header && check_func $func "$@" && add_extralibs "$@"
979 }
980
981 check_lib2(){
982     log check_lib2 "$@"
983     headers="$1"
984     funcs="$2"
985     shift 2
986     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
987 }
988
989 check_pkg_config(){
990     log check_pkg_config "$@"
991     pkg="$1"
992     headers="$2"
993     funcs="$3"
994     shift 3
995     check_cmd $pkg_config --exists --print-errors $pkg || return
996     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
997     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
998     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
999         set_safe "${pkg}_cflags" $pkg_cflags   &&
1000         set_safe "${pkg}_libs"   $pkg_libs
1001 }
1002
1003 check_exec(){
1004     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1005 }
1006
1007 check_exec_crash(){
1008     code=$(cat)
1009
1010     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1011     # are safe but may not be available everywhere.  Thus we use
1012     # raise(SIGTERM) instead.  The check is run in a subshell so we
1013     # can redirect the "Terminated" message from the shell.  SIGBUS
1014     # is not defined by standard C so it is used conditionally.
1015
1016     (check_exec "$@") >> $logfile 2>&1 <<EOF
1017 #include <signal.h>
1018 static void sighandler(int sig){
1019     raise(SIGTERM);
1020 }
1021 int foo(void){
1022     $code
1023 }
1024 int (*func_ptr)(void) = foo;
1025 int main(void){
1026     signal(SIGILL, sighandler);
1027     signal(SIGFPE, sighandler);
1028     signal(SIGSEGV, sighandler);
1029 #ifdef SIGBUS
1030     signal(SIGBUS, sighandler);
1031 #endif
1032     return func_ptr();
1033 }
1034 EOF
1035 }
1036
1037 check_type(){
1038     log check_type "$@"
1039     headers=$1
1040     type=$2
1041     shift 2
1042     disable_safe "$type"
1043     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1044 }
1045
1046 check_struct(){
1047     log check_struct "$@"
1048     headers=$1
1049     struct=$2
1050     member=$3
1051     shift 3
1052     disable_safe "${struct}_${member}"
1053     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1054         enable_safe "${struct}_${member}"
1055 }
1056
1057 check_builtin(){
1058     log check_builtin "$@"
1059     name=$1
1060     headers=$2
1061     builtin=$3
1062     shift 3
1063     disable "$name"
1064     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1065 }
1066
1067 check_compile_assert(){
1068     log check_compile_assert "$@"
1069     name=$1
1070     headers=$2
1071     condition=$3
1072     shift 3
1073     disable "$name"
1074     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1075 }
1076
1077 require(){
1078     name="$1"
1079     header="$2"
1080     func="$3"
1081     shift 3
1082     check_lib $header $func "$@" || die "ERROR: $name not found"
1083 }
1084
1085 require2(){
1086     name="$1"
1087     headers="$2"
1088     func="$3"
1089     shift 3
1090     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1091 }
1092
1093 require_pkg_config(){
1094     pkg="$1"
1095     check_pkg_config "$@" || die "ERROR: $pkg not found"
1096     add_cflags    $(get_safe "${pkg}_cflags")
1097     add_extralibs $(get_safe "${pkg}_libs")
1098 }
1099
1100 hostcc_e(){
1101     eval printf '%s\\n' $HOSTCC_E
1102 }
1103
1104 hostcc_o(){
1105     eval printf '%s\\n' $HOSTCC_O
1106 }
1107
1108 check_host_cc(){
1109     log check_host_cc "$@"
1110     cat > $TMPC
1111     log_file $TMPC
1112     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1113 }
1114
1115 check_host_cpp(){
1116     log check_host_cpp "$@"
1117     cat > $TMPC
1118     log_file $TMPC
1119     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1120 }
1121
1122 check_host_cppflags(){
1123     log check_host_cppflags "$@"
1124     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1125 int x;
1126 EOF
1127 }
1128
1129 check_host_cflags(){
1130     log check_host_cflags "$@"
1131     set -- $($host_cflags_filter "$@")
1132     check_host_cc "$@" <<EOF && append host_cflags "$@"
1133 int x;
1134 EOF
1135 }
1136
1137 check_host_cpp_condition(){
1138     log check_host_cpp_condition "$@"
1139     header=$1
1140     condition=$2
1141     shift 2
1142     check_host_cpp "$@" <<EOF
1143 #include <$header>
1144 #if !($condition)
1145 #error "unsatisfied condition: $condition"
1146 #endif
1147 EOF
1148 }
1149
1150 apply(){
1151     file=$1
1152     shift
1153     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1154 }
1155
1156 cp_if_changed(){
1157     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1158     mkdir -p "$(dirname $2)"
1159     $cp_f "$1" "$2"
1160 }
1161
1162 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1163 # system-dependent things.
1164
1165 AVCODEC_COMPONENTS="
1166     bsfs
1167     decoders
1168     encoders
1169     hwaccels
1170     parsers
1171 "
1172
1173 AVDEVICE_COMPONENTS="
1174     indevs
1175     outdevs
1176 "
1177 AVFILTER_COMPONENTS="
1178     filters
1179 "
1180 AVFORMAT_COMPONENTS="
1181     demuxers
1182     muxers
1183     protocols
1184 "
1185
1186 AVRESAMPLE_COMPONENTS=""
1187 AVUTIL_COMPONENTS=""
1188
1189 COMPONENT_LIST="
1190     $AVCODEC_COMPONENTS
1191     $AVDEVICE_COMPONENTS
1192     $AVFILTER_COMPONENTS
1193     $AVFORMAT_COMPONENTS
1194     $AVRESAMPLE_COMPONENTS
1195     $AVUTIL_COMPONENTS
1196 "
1197
1198 EXAMPLE_LIST="
1199     avcodec_example
1200     filter_audio_example
1201     metadata_example
1202     output_example
1203     qsvdec_example
1204     transcode_aac_example
1205 "
1206
1207 EXTERNAL_LIBRARY_LIST="
1208     avisynth
1209     bzlib
1210     cuda
1211     frei0r
1212     gnutls
1213     libbs2b
1214     libcdio
1215     libdc1394
1216     libdcadec
1217     libfaac
1218     libfdk_aac
1219     libfontconfig
1220     libfreetype
1221     libgsm
1222     libilbc
1223     libkvazaar
1224     libmfx
1225     libmp3lame
1226     libnpp
1227     libopencore_amrnb
1228     libopencore_amrwb
1229     libopencv
1230     libopenh264
1231     libopenjpeg
1232     libopus
1233     libpulse
1234     librtmp
1235     libschroedinger
1236     libsnappy
1237     libspeex
1238     libtheora
1239     libtwolame
1240     libvo_aacenc
1241     libvo_amrwbenc
1242     libvorbis
1243     libvpx
1244     libwavpack
1245     libwebp
1246     libx264
1247     libx265
1248     libxavs
1249     libxcb
1250     libxcb_shm
1251     libxcb_xfixes
1252     libxvid
1253     mmal
1254     nvenc
1255     openssl
1256     x11grab
1257     zlib
1258 "
1259
1260 FEATURE_LIST="
1261     gray
1262     hardcoded_tables
1263     runtime_cpudetect
1264     safe_bitstream_reader
1265     shared
1266     small
1267     sram
1268     static
1269     swscale_alpha
1270 "
1271
1272 HWACCEL_LIST="
1273     d3d11va
1274     dxva2
1275     vaapi
1276     vda
1277     vdpau
1278 "
1279
1280 LIBRARY_LIST="
1281     avcodec
1282     avdevice
1283     avfilter
1284     avformat
1285     avresample
1286     avutil
1287     swscale
1288 "
1289
1290 LICENSE_LIST="
1291     gpl
1292     nonfree
1293     version3
1294 "
1295
1296 PROGRAM_LIST="
1297     avconv
1298     avplay
1299     avprobe
1300 "
1301
1302 SUBSYSTEM_LIST="
1303     dct
1304     doc
1305     error_resilience
1306     faan
1307     fft
1308     lsp
1309     lzo
1310     mdct
1311     network
1312     rdft
1313 "
1314
1315 CONFIG_LIST="
1316     $COMPONENT_LIST
1317     $EXAMPLE_LIST
1318     $EXTERNAL_LIBRARY_LIST
1319     $FEATURE_LIST
1320     $HWACCEL_LIST
1321     $LICENSE_LIST
1322     $LIBRARY_LIST
1323     $PROGRAM_LIST
1324     $SUBSYSTEM_LIST
1325     memalign_hack
1326     neon_clobber_test
1327     pic
1328     pod2man
1329     texi2html
1330     thumb
1331     valgrind_backtrace
1332     xmm_clobber_test
1333 "
1334
1335 THREADS_LIST="
1336     pthreads
1337     w32threads
1338 "
1339
1340 ATOMICS_LIST="
1341     atomics_gcc
1342     atomics_suncc
1343     atomics_win32
1344 "
1345
1346 ARCH_LIST="
1347     aarch64
1348     alpha
1349     arm
1350     avr32
1351     avr32_ap
1352     avr32_uc
1353     bfin
1354     ia64
1355     m68k
1356     mips
1357     mips64
1358     parisc
1359     ppc
1360     ppc64
1361     s390
1362     sh4
1363     sparc
1364     sparc64
1365     tilegx
1366     tilepro
1367     tomi
1368     x86
1369     x86_32
1370     x86_64
1371 "
1372
1373 ARCH_EXT_LIST_ARM="
1374     armv5te
1375     armv6
1376     armv6t2
1377     armv8
1378     neon
1379     vfp
1380     vfpv3
1381 "
1382
1383 ARCH_EXT_LIST_X86_SIMD="
1384     amd3dnow
1385     amd3dnowext
1386     avx
1387     avx2
1388     fma3
1389     fma4
1390     mmx
1391     mmxext
1392     sse
1393     sse2
1394     sse3
1395     sse4
1396     sse42
1397     ssse3
1398     xop
1399 "
1400
1401 ARCH_EXT_LIST_PPC="
1402     altivec
1403     dcbzl
1404     ldbrx
1405     power8
1406     ppc4xx
1407     vsx
1408 "
1409
1410 ARCH_EXT_LIST_X86="
1411     $ARCH_EXT_LIST_X86_SIMD
1412     cpunop
1413     i686
1414 "
1415
1416 ARCH_EXT_LIST_MIPS="
1417     loongson
1418     mips32r1
1419     mips64r1
1420     mips32r2
1421     mips64r2
1422     mips32r6
1423     mips64r6
1424 "
1425
1426 ARCH_EXT_LIST="
1427     $ARCH_EXT_LIST_ARM
1428     $ARCH_EXT_LIST_MIPS
1429     $ARCH_EXT_LIST_PPC
1430     $ARCH_EXT_LIST_X86
1431     vis
1432 "
1433
1434 ARCH_FEATURES="
1435     aligned_stack
1436     fast_64bit
1437     fast_clz
1438     fast_cmov
1439     local_aligned_8
1440     local_aligned_16
1441     simd_align_16
1442 "
1443
1444 BUILTIN_LIST="
1445     atomic_cas_ptr
1446     machine_rw_barrier
1447     MemoryBarrier
1448     mm_empty
1449     rdtsc
1450     sync_val_compare_and_swap
1451 "
1452 HAVE_LIST_CMDLINE="
1453     inline_asm
1454     symver
1455     yasm
1456 "
1457
1458 HAVE_LIST_PUB="
1459     bigendian
1460     fast_unaligned
1461 "
1462
1463 HEADERS_LIST="
1464     AVFoundation_AVFoundation_h
1465     alsa_asoundlib_h
1466     altivec_h
1467     arpa_inet_h
1468     cdio_paranoia_h
1469     cdio_paranoia_paranoia_h
1470     dev_bktr_ioctl_bt848_h
1471     dev_bktr_ioctl_meteor_h
1472     dev_ic_bt8xx_h
1473     dev_video_bktr_ioctl_bt848_h
1474     dev_video_meteor_ioctl_meteor_h
1475     direct_h
1476     dlfcn_h
1477     d3d11_h
1478     dxva_h
1479     gsm_h
1480     io_h
1481     mach_mach_time_h
1482     machine_ioctl_bt848_h
1483     machine_ioctl_meteor_h
1484     malloc_h
1485     poll_h
1486     sndio_h
1487     soundcard_h
1488     sys_mman_h
1489     sys_param_h
1490     sys_resource_h
1491     sys_select_h
1492     sys_soundcard_h
1493     sys_time_h
1494     sys_un_h
1495     sys_videoio_h
1496     unistd_h
1497     valgrind_valgrind_h
1498     windows_h
1499     winsock2_h
1500 "
1501
1502 INTRINSICS_LIST="
1503     intrinsics_neon
1504 "
1505
1506 MATH_FUNCS="
1507     atanf
1508     atan2f
1509     cbrtf
1510     cosf
1511     exp2
1512     exp2f
1513     expf
1514     isinf
1515     isnan
1516     ldexpf
1517     llrint
1518     llrintf
1519     log2
1520     log2f
1521     log10f
1522     lrint
1523     lrintf
1524     powf
1525     rint
1526     round
1527     roundf
1528     sinf
1529     trunc
1530     truncf
1531 "
1532
1533 SYSTEM_FUNCS="
1534     aligned_malloc
1535     clock_gettime
1536     closesocket
1537     CommandLineToArgvW
1538     CoTaskMemFree
1539     CryptGenRandom
1540     dlopen
1541     fcntl
1542     flt_lim
1543     fork
1544     getaddrinfo
1545     gethrtime
1546     getopt
1547     GetProcessAffinityMask
1548     GetProcessMemoryInfo
1549     GetProcessTimes
1550     getrusage
1551     GetSystemTimeAsFileTime
1552     gettimeofday
1553     gmtime_r
1554     inet_aton
1555     isatty
1556     jack_port_get_latency_range
1557     LoadLibrary
1558     localtime_r
1559     mach_absolute_time
1560     MapViewOfFile
1561     memalign
1562     mkstemp
1563     mmap
1564     mprotect
1565     nanosleep
1566     posix_memalign
1567     sched_getaffinity
1568     SetConsoleTextAttribute
1569     setmode
1570     setrlimit
1571     Sleep
1572     strerror_r
1573     sysconf
1574     sysctl
1575     usleep
1576     VirtualAlloc
1577 "
1578
1579 TOOLCHAIN_FEATURES="
1580     as_dn_directive
1581     as_func
1582     as_object_arch
1583     asm_mod_q
1584     attribute_may_alias
1585     attribute_packed
1586     ebp_available
1587     ebx_available
1588     gnu_as
1589     ibm_asm
1590     inline_asm_labels
1591     pragma_deprecated
1592     symver_asm_label
1593     symver_gnu_asm
1594     vfp_args
1595     xform_asm
1596     xmm_clobbers
1597 "
1598
1599 TYPES_LIST="
1600     CONDITION_VARIABLE_Ptr
1601     socklen_t
1602     struct_addrinfo
1603     struct_group_source_req
1604     struct_ip_mreq_source
1605     struct_ipv6_mreq
1606     struct_pollfd
1607     struct_rusage_ru_maxrss
1608     struct_sockaddr_in6
1609     struct_sockaddr_sa_len
1610     struct_sockaddr_storage
1611     struct_v4l2_frmivalenum_discrete
1612 "
1613
1614 HAVE_LIST="
1615     $ARCH_EXT_LIST
1616     $(add_suffix _external $ARCH_EXT_LIST)
1617     $(add_suffix _inline   $ARCH_EXT_LIST)
1618     $ARCH_FEATURES
1619     $ATOMICS_LIST
1620     $BUILTIN_LIST
1621     $HAVE_LIST_CMDLINE
1622     $HAVE_LIST_PUB
1623     $HEADERS_LIST
1624     $INTRINSICS_LIST
1625     $MATH_FUNCS
1626     $SYSTEM_FUNCS
1627     $THREADS_LIST
1628     $TOOLCHAIN_FEATURES
1629     $TYPES_LIST
1630     atomics_native
1631     dos_paths
1632     dxva2_lib
1633     libc_msvcrt
1634     libdc1394_1
1635     libdc1394_2
1636     sdl
1637     section_data_rel_ro
1638     threads
1639     vaapi_drm
1640     vaapi_x11
1641     vdpau_x11
1642     xlib
1643 "
1644
1645 # options emitted with CONFIG_ prefix but not available on the command line
1646 CONFIG_EXTRA="
1647     aandcttables
1648     ac3dsp
1649     audio_frame_queue
1650     audiodsp
1651     blockdsp
1652     bswapdsp
1653     cabac
1654     dirac_parse
1655     dvprofile
1656     faandct
1657     faanidct
1658     fdctdsp
1659     flacdsp
1660     fmtconvert
1661     g722dsp
1662     gcrypt
1663     gmp
1664     golomb
1665     gplv3
1666     h263dsp
1667     h264chroma
1668     h264dsp
1669     h264pred
1670     h264qpel
1671     hpeldsp
1672     huffman
1673     huffyuvdsp
1674     huffyuvencdsp
1675     idctdsp
1676     iirfilter
1677     imdct15
1678     intrax8
1679     iso_media
1680     ividsp
1681     jpegtables
1682     libx262
1683     lgplv3
1684     lpc
1685     lzf
1686     me_cmp
1687     mpeg_er
1688     mpegaudio
1689     mpegaudiodsp
1690     mpegvideo
1691     mpegvideoenc
1692     mss34dsp
1693     pixblockdsp
1694     qpeldsp
1695     qsv
1696     qsvdec
1697     qsvenc
1698     rangecoder
1699     riffdec
1700     riffenc
1701     rtpdec
1702     rtpenc_chain
1703     rv34dsp
1704     sinewin
1705     snappy
1706     srtp
1707     startcode
1708     texturedsp
1709     texturedspenc
1710     tpeldsp
1711     vaapi_encode
1712     vc1dsp
1713     videodsp
1714     vp3dsp
1715     vp56dsp
1716     vp8dsp
1717     wma_freqs
1718     wmv2dsp
1719 "
1720
1721 CMDLINE_SELECT="
1722     $ARCH_EXT_LIST
1723     $CONFIG_LIST
1724     $HAVE_LIST_CMDLINE
1725     $THREADS_LIST
1726     asm
1727     cross_compile
1728     debug
1729     extra_warnings
1730     logging
1731     lto
1732     optimizations
1733     rpath
1734 "
1735
1736 PATHS_LIST="
1737     bindir
1738     datadir
1739     docdir
1740     incdir
1741     libdir
1742     mandir
1743     prefix
1744     shlibdir
1745 "
1746
1747 CMDLINE_SET="
1748     $PATHS_LIST
1749     ar
1750     arch
1751     as
1752     build_suffix
1753     cc
1754     objcc
1755     cpu
1756     cross_prefix
1757     custom_allocator
1758     dep_cc
1759     env
1760     extra_version
1761     host_cc
1762     host_cflags
1763     host_ld
1764     host_ldflags
1765     host_libs
1766     host_os
1767     ld
1768     logfile
1769     malloc_prefix
1770     nm
1771     optflags
1772     pkg_config
1773     pkg_config_flags
1774     random_seed
1775     samples
1776     sysinclude
1777     sysroot
1778     target_exec
1779     target_os
1780     target_path
1781     target_samples
1782     toolchain
1783 "
1784
1785 CMDLINE_APPEND="
1786     extra_cflags
1787     extra_objcflags
1788     host_cppflags
1789 "
1790
1791 # code dependency declarations
1792
1793 # architecture extensions
1794
1795 armv5te_deps="arm"
1796 armv6_deps="arm"
1797 armv6t2_deps="arm"
1798 armv8_deps="aarch64"
1799 neon_deps_any="aarch64 arm"
1800 intrinsics_neon_deps="neon"
1801 vfp_deps_any="aarch64 arm"
1802 vfpv3_deps="vfp"
1803
1804 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1805
1806 altivec_deps="ppc"
1807 ppc4xx_deps="ppc"
1808 vsx_deps="altivec"
1809 power8_deps="vsx"
1810
1811 cpunop_deps="i686"
1812 x86_64_select="i686"
1813 x86_64_suggest="fast_cmov"
1814
1815 amd3dnow_deps="mmx"
1816 amd3dnowext_deps="amd3dnow"
1817 i686_deps="x86"
1818 mmx_deps="x86"
1819 mmxext_deps="mmx"
1820 sse_deps="mmxext"
1821 sse2_deps="sse"
1822 sse3_deps="sse2"
1823 ssse3_deps="sse3"
1824 sse4_deps="ssse3"
1825 sse42_deps="sse4"
1826 avx_deps="sse42"
1827 xop_deps="avx"
1828 fma3_deps="avx"
1829 fma4_deps="avx"
1830 avx2_deps="avx"
1831
1832 mmx_external_deps="yasm"
1833 mmx_inline_deps="inline_asm"
1834 mmx_suggest="mmx_external mmx_inline"
1835
1836 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1837     eval dep=\$${ext}_deps
1838     eval ${ext}_external_deps='"${dep}_external"'
1839     eval ${ext}_inline_deps='"${dep}_inline"'
1840     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1841 done
1842
1843 aligned_stack_if_any="aarch64 ppc x86"
1844 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1845 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1846 fast_unaligned_if_any="aarch64 ppc x86"
1847 simd_align_16_if_any="altivec neon sse"
1848
1849 # system capabilities
1850 symver_if_any="symver_asm_label symver_gnu_asm"
1851 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1852
1853 # threading support
1854 atomics_gcc_if="sync_val_compare_and_swap"
1855 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1856 atomics_win32_if="MemoryBarrier"
1857 atomics_native_if_any="$ATOMICS_LIST"
1858 w32threads_deps="atomics_native"
1859 threads_if_any="$THREADS_LIST"
1860
1861 # subsystems
1862 dct_select="rdft"
1863 dirac_parse_select="golomb"
1864 error_resilience_select="me_cmp"
1865 faandct_deps="faan fdctdsp"
1866 faanidct_deps="faan idctdsp"
1867 h264dsp_select="startcode"
1868 intrax8_select="blockdsp idctdsp"
1869 mdct_select="fft"
1870 rdft_select="fft"
1871 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1872 mpeg_er_select="error_resilience"
1873 mpegaudio_select="mpegaudiodsp"
1874 mpegaudiodsp_select="dct"
1875 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1876 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1877 nvenc_deps_any="dlopen LoadLibrary"
1878 nvenc_extralibs='$ldl'
1879 qsvdec_select="qsv"
1880 qsvenc_select="qsv"
1881 vaapi_encode_deps="vaapi"
1882 vc1dsp_select="h264chroma qpeldsp startcode"
1883
1884 # decoders / encoders
1885 aac_decoder_select="imdct15 mdct sinewin"
1886 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1887 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1888 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1889 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1890 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1891 adpcm_g722_decoder_select="g722dsp"
1892 adpcm_g722_encoder_select="g722dsp"
1893 aic_decoder_select="golomb idctdsp"
1894 alac_encoder_select="lpc"
1895 als_decoder_select="bswapdsp"
1896 amrnb_decoder_select="lsp"
1897 amrwb_decoder_select="lsp"
1898 amv_decoder_select="sp5x_decoder"
1899 ape_decoder_select="bswapdsp"
1900 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1901 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1902 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1903 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1904 atrac1_decoder_select="mdct sinewin"
1905 atrac3_decoder_select="mdct"
1906 atrac3p_decoder_select="mdct sinewin"
1907 bink_decoder_select="blockdsp hpeldsp"
1908 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1909 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1910 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1911 cllc_decoder_select="bswapdsp"
1912 comfortnoise_encoder_select="lpc"
1913 cook_decoder_select="audiodsp mdct sinewin"
1914 cscd_decoder_select="lzo"
1915 cscd_decoder_suggest="zlib"
1916 dca_decoder_select="fmtconvert mdct"
1917 dds_decoder_select="texturedsp"
1918 dnxhd_decoder_select="blockdsp idctdsp"
1919 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1920 dvvideo_decoder_select="dvprofile idctdsp"
1921 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1922 dxa_decoder_deps="zlib"
1923 dxv_decoder_select="lzf texturedsp"
1924 eac3_decoder_select="ac3_decoder"
1925 eac3_encoder_select="ac3_encoder"
1926 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1927 eatgq_decoder_select="aandcttables idctdsp"
1928 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
1929 exr_decoder_deps="zlib"
1930 ffv1_decoder_select="golomb rangecoder"
1931 ffv1_encoder_select="rangecoder"
1932 ffvhuff_decoder_select="huffyuv_decoder"
1933 ffvhuff_encoder_select="huffyuv_encoder"
1934 fic_decoder_select="golomb"
1935 flac_decoder_select="flacdsp golomb"
1936 flac_encoder_select="bswapdsp flacdsp golomb lpc"
1937 flashsv_decoder_deps="zlib"
1938 flashsv_encoder_deps="zlib"
1939 flashsv2_decoder_deps="zlib"
1940 flv_decoder_select="h263_decoder"
1941 flv_encoder_select="h263_encoder"
1942 fourxm_decoder_select="blockdsp bswapdsp"
1943 fraps_decoder_select="bswapdsp huffman"
1944 g2m_decoder_deps="zlib"
1945 g2m_decoder_select="blockdsp idctdsp jpegtables"
1946 h261_decoder_select="mpeg_er mpegvideo"
1947 h261_encoder_select="aandcttables mpegvideoenc"
1948 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1949 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1950 h263i_decoder_select="h263_decoder"
1951 h263p_encoder_select="h263_encoder"
1952 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
1953 h264_decoder_suggest="error_resilience"
1954 h264_nvenc_encoder_deps="nvenc"
1955 h264_qsv_decoder_deps="libmfx"
1956 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
1957 h264_qsv_encoder_deps="libmfx"
1958 h264_qsv_encoder_select="qsvenc"
1959 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
1960 h264_vaapi_encoder_select="vaapi_encode golomb"
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 hevc_nvenc_encoder_deps="nvenc"
1966 hevc_qsv_encoder_deps="libmfx"
1967 hevc_qsv_decoder_deps="libmfx"
1968 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
1969 hevc_qsv_encoder_select="qsvenc"
1970 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1971 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1972 iac_decoder_select="imc_decoder"
1973 imc_decoder_select="bswapdsp fft mdct sinewin"
1974 indeo3_decoder_select="hpeldsp"
1975 indeo4_decoder_select="ividsp"
1976 indeo5_decoder_select="ividsp"
1977 interplay_video_decoder_select="hpeldsp"
1978 jpegls_decoder_select="golomb mjpeg_decoder"
1979 jpegls_encoder_select="golomb"
1980 jv_decoder_select="blockdsp"
1981 lagarith_decoder_select="huffyuvdsp"
1982 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
1983 loco_decoder_select="golomb"
1984 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1985 metasound_decoder_select="lsp mdct sinewin"
1986 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1987 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
1988 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
1989 mjpegb_decoder_select="mjpeg_decoder"
1990 mlp_decoder_select="mlp_parser"
1991 motionpixels_decoder_select="bswapdsp"
1992 mp1_decoder_select="mpegaudio"
1993 mp1float_decoder_select="mpegaudio"
1994 mp2_decoder_select="mpegaudio"
1995 mp2float_decoder_select="mpegaudio"
1996 mp3_decoder_select="mpegaudio"
1997 mp3adu_decoder_select="mpegaudio"
1998 mp3adufloat_decoder_select="mpegaudio"
1999 mp3float_decoder_select="mpegaudio"
2000 mp3on4_decoder_select="mpegaudio"
2001 mp3on4float_decoder_select="mpegaudio"
2002 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2003 mpc8_decoder_select="mpegaudiodsp"
2004 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2005 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2006 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2007 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2008 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2009 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2010 mpeg2_qsv_decoder_deps="libmfx"
2011 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2012 mpeg2_qsv_encoder_deps="libmfx"
2013 mpeg2_qsv_encoder_select="qsvenc"
2014 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2015 mpeg4_encoder_select="h263_encoder"
2016 msa1_decoder_select="mss34dsp"
2017 msmpeg4v1_decoder_select="h263_decoder"
2018 msmpeg4v2_decoder_select="h263_decoder"
2019 msmpeg4v2_encoder_select="h263_encoder"
2020 msmpeg4v3_decoder_select="h263_decoder"
2021 msmpeg4v3_encoder_select="h263_encoder"
2022 mss2_decoder_select="error_resilience mpeg_er mpegvideo vc1_decoder"
2023 mts2_decoder_select="mss34dsp"
2024 mxpeg_decoder_select="mjpeg_decoder"
2025 nellymoser_decoder_select="mdct sinewin"
2026 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2027 nuv_decoder_select="idctdsp lzo"
2028 nvenc_h264_encoder_deps="nvenc"
2029 nvenc_hevc_encoder_deps="nvenc"
2030 on2avc_decoder_select="mdct"
2031 opus_decoder_deps="avresample"
2032 opus_decoder_select="imdct15"
2033 png_decoder_deps="zlib"
2034 png_encoder_deps="zlib"
2035 png_encoder_select="huffyuvencdsp"
2036 prores_decoder_select="idctdsp"
2037 prores_encoder_select="fdctdsp"
2038 qcelp_decoder_select="lsp"
2039 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2040 ra_144_encoder_select="audio_frame_queue lpc"
2041 ralf_decoder_select="golomb"
2042 rscc_decoder_deps="zlib"
2043 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2044 rv10_encoder_select="h263_encoder"
2045 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2046 rv20_encoder_select="h263_encoder"
2047 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2048 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2049 screenpresso_decoder_deps="zlib"
2050 shorten_decoder_select="golomb"
2051 sipr_decoder_select="lsp"
2052 sp5x_decoder_select="mjpeg_decoder"
2053 svq1_decoder_select="hpeldsp"
2054 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2055 svq3_decoder_select="golomb h264dsp h264pred hpeldsp tpeldsp videodsp"
2056 svq3_decoder_suggest="zlib"
2057 tak_decoder_select="audiodsp"
2058 tdsc_decoder_deps="zlib"
2059 tdsc_decoder_select="mjpeg_decoder"
2060 theora_decoder_select="vp3_decoder"
2061 thp_decoder_select="mjpeg_decoder"
2062 tiff_decoder_suggest="zlib"
2063 tiff_encoder_suggest="zlib"
2064 truehd_decoder_select="mlp_decoder"
2065 truemotion2_decoder_select="bswapdsp"
2066 truespeech_decoder_select="bswapdsp"
2067 tscc_decoder_deps="zlib"
2068 txd_decoder_select="texturedsp"
2069 twinvq_decoder_select="mdct lsp sinewin"
2070 utvideo_decoder_select="bswapdsp"
2071 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2072 vble_decoder_select="huffyuvdsp"
2073 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2074 vc1image_decoder_select="vc1_decoder"
2075 vorbis_decoder_select="mdct"
2076 vorbis_encoder_select="mdct"
2077 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2078 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2079 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2080 vp6a_decoder_select="vp6_decoder"
2081 vp6f_decoder_select="vp6_decoder"
2082 vp7_decoder_select="h264pred videodsp vp8dsp"
2083 vp8_decoder_select="h264pred videodsp vp8dsp"
2084 vp9_decoder_select="videodsp"
2085 webp_decoder_select="vp8_decoder"
2086 wmapro_decoder_select="mdct sinewin wma_freqs"
2087 wmav1_decoder_select="mdct sinewin wma_freqs"
2088 wmav1_encoder_select="mdct sinewin wma_freqs"
2089 wmav2_decoder_select="mdct sinewin wma_freqs"
2090 wmav2_encoder_select="mdct sinewin wma_freqs"
2091 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2092 wmv1_decoder_select="h263_decoder"
2093 wmv1_encoder_select="h263_encoder"
2094 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2095 wmv2_encoder_select="h263_encoder wmv2dsp"
2096 wmv3_decoder_select="vc1_decoder"
2097 wmv3image_decoder_select="wmv3_decoder"
2098 zerocodec_decoder_deps="zlib"
2099 zlib_decoder_deps="zlib"
2100 zlib_encoder_deps="zlib"
2101 zmbv_decoder_deps="zlib"
2102 zmbv_encoder_deps="zlib"
2103
2104 # hardware accelerators
2105 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2106 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2107 vaapi_deps="va_va_h"
2108 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2109 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2110 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2111
2112 h263_vaapi_hwaccel_deps="vaapi"
2113 h263_vaapi_hwaccel_select="h263_decoder"
2114 h264_d3d11va_hwaccel_deps="d3d11va"
2115 h264_d3d11va_hwaccel_select="h264_decoder"
2116 h264_dxva2_hwaccel_deps="dxva2"
2117 h264_dxva2_hwaccel_select="h264_decoder"
2118 h264_mmal_decoder_deps="mmal"
2119 h264_mmal_hwaccel_deps="mmal"
2120 h264_mmal_decoder_select="h264_decoder"
2121 h264_mmal_encoder_deps="mmal"
2122 h264_qsv_hwaccel_deps="libmfx"
2123 h264_vaapi_hwaccel_deps="vaapi"
2124 h264_vaapi_hwaccel_select="h264_decoder"
2125 h264_vda_hwaccel_deps="vda"
2126 h264_vda_hwaccel_select="h264_decoder"
2127 h264_vda_old_hwaccel_deps="vda"
2128 h264_vda_old_hwaccel_select="h264_decoder"
2129 h264_vdpau_hwaccel_deps="vdpau"
2130 h264_vdpau_hwaccel_select="h264_decoder"
2131 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2132 hevc_d3d11va_hwaccel_select="hevc_decoder"
2133 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2134 hevc_dxva2_hwaccel_select="hevc_decoder"
2135 hevc_qsv_hwaccel_deps="libmfx"
2136 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2137 hevc_vdpau_hwaccel_select="hevc_decoder"
2138 mpeg1_vdpau_hwaccel_deps="vdpau"
2139 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2140 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2141 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2142 mpeg2_dxva2_hwaccel_deps="dxva2"
2143 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2144 mpeg2_qsv_hwaccel_deps="libmfx"
2145 mpeg2_vaapi_hwaccel_deps="vaapi"
2146 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2147 mpeg2_vdpau_hwaccel_deps="vdpau"
2148 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2149 mpeg4_vaapi_hwaccel_deps="vaapi"
2150 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2151 mpeg4_vdpau_hwaccel_deps="vdpau"
2152 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2153 vc1_d3d11va_hwaccel_deps="d3d11va"
2154 vc1_d3d11va_hwaccel_select="vc1_decoder"
2155 vc1_dxva2_hwaccel_deps="dxva2"
2156 vc1_dxva2_hwaccel_select="vc1_decoder"
2157 vc1_vaapi_hwaccel_deps="vaapi"
2158 vc1_vaapi_hwaccel_select="vc1_decoder"
2159 vc1_vdpau_hwaccel_deps="vdpau"
2160 vc1_vdpau_hwaccel_select="vc1_decoder"
2161 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2162 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2163 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2164 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2165
2166 # parsers
2167 h264_parser_select="h264_decoder"
2168 hevc_parser_select="golomb"
2169 mpegvideo_parser_select="mpegvideo"
2170 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2171 vc1_parser_select="vc1dsp"
2172
2173 # bitstream_filters
2174 mjpeg2jpeg_bsf_select="jpegtables"
2175
2176 # external libraries
2177 libdcadec_decoder_deps="libdcadec"
2178 libfaac_encoder_deps="libfaac"
2179 libfaac_encoder_select="audio_frame_queue"
2180 libfdk_aac_decoder_deps="libfdk_aac"
2181 libfdk_aac_encoder_deps="libfdk_aac"
2182 libfdk_aac_encoder_select="audio_frame_queue"
2183 libgsm_decoder_deps="libgsm"
2184 libgsm_encoder_deps="libgsm"
2185 libgsm_ms_decoder_deps="libgsm"
2186 libgsm_ms_encoder_deps="libgsm"
2187 libilbc_decoder_deps="libilbc"
2188 libilbc_encoder_deps="libilbc"
2189 libkvazaar_encoder_deps="libkvazaar"
2190 libmp3lame_encoder_deps="libmp3lame"
2191 libmp3lame_encoder_select="audio_frame_queue"
2192 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2193 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2194 libopencore_amrnb_encoder_select="audio_frame_queue"
2195 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2196 libopenh264_encoder_deps="libopenh264"
2197 libopenjpeg_decoder_deps="libopenjpeg"
2198 libopenjpeg_encoder_deps="libopenjpeg"
2199 libopus_decoder_deps="libopus"
2200 libopus_encoder_deps="libopus"
2201 libopus_encoder_select="audio_frame_queue"
2202 libschroedinger_decoder_deps="libschroedinger"
2203 libschroedinger_encoder_deps="libschroedinger"
2204 libspeex_decoder_deps="libspeex"
2205 libspeex_encoder_deps="libspeex"
2206 libspeex_encoder_select="audio_frame_queue"
2207 libtheora_encoder_deps="libtheora"
2208 libtwolame_encoder_deps="libtwolame"
2209 libvo_aacenc_encoder_deps="libvo_aacenc"
2210 libvo_aacenc_encoder_select="audio_frame_queue"
2211 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2212 libvorbis_encoder_deps="libvorbis"
2213 libvorbis_encoder_select="audio_frame_queue"
2214 libvpx_vp8_decoder_deps="libvpx"
2215 libvpx_vp8_encoder_deps="libvpx"
2216 libvpx_vp9_decoder_deps="libvpx"
2217 libvpx_vp9_encoder_deps="libvpx"
2218 libwavpack_encoder_deps="libwavpack"
2219 libwebp_encoder_deps="libwebp"
2220 libx262_encoder_deps="libx262"
2221 libx264_encoder_deps="libx264"
2222 libx265_encoder_deps="libx265"
2223 libxavs_encoder_deps="libxavs"
2224 libxvid_encoder_deps="libxvid"
2225
2226 # demuxers / muxers
2227 ac3_demuxer_select="ac3_parser"
2228 asf_demuxer_select="riffdec"
2229 asf_muxer_select="riffenc"
2230 asf_stream_muxer_select="asf_muxer"
2231 avi_demuxer_select="iso_media riffdec"
2232 avi_muxer_select="riffenc"
2233 avisynth_demuxer_deps="avisynth"
2234 avisynth_demuxer_select="riffdec"
2235 caf_demuxer_select="iso_media riffdec"
2236 dash_muxer_select="mp4_muxer"
2237 dirac_demuxer_select="dirac_parser"
2238 dv_demuxer_select="dvprofile"
2239 dv_muxer_select="dvprofile"
2240 dxa_demuxer_select="riffdec"
2241 eac3_demuxer_select="ac3_parser"
2242 f4v_muxer_select="mov_muxer"
2243 flac_demuxer_select="flac_parser"
2244 hds_muxer_select="flv_muxer"
2245 hls_muxer_select="mpegts_muxer"
2246 ipod_muxer_select="mov_muxer"
2247 ismv_muxer_select="mov_muxer"
2248 matroska_audio_muxer_select="matroska_muxer"
2249 matroska_demuxer_select="iso_media riffdec"
2250 matroska_demuxer_suggest="bzlib lzo zlib"
2251 matroska_muxer_select="iso_media riffenc"
2252 mmf_muxer_select="riffenc"
2253 mov_demuxer_select="iso_media riffdec"
2254 mov_demuxer_suggest="zlib"
2255 mov_muxer_select="iso_media riffenc rtpenc_chain"
2256 mp3_demuxer_select="mpegaudio_parser"
2257 mp4_muxer_select="mov_muxer"
2258 mpegts_demuxer_select="iso_media"
2259 mpegts_muxer_select="adts_muxer latm_muxer"
2260 mpegtsraw_demuxer_select="mpegts_demuxer"
2261 mxf_d10_muxer_select="mxf_muxer"
2262 nut_muxer_select="riffenc"
2263 nuv_demuxer_select="riffdec"
2264 oga_muxer_select="ogg_muxer"
2265 ogg_demuxer_select="dirac_parse"
2266 opus_muxer_select="ogg_muxer"
2267 psp_muxer_select="mov_muxer"
2268 rtp_demuxer_select="sdp_demuxer"
2269 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2270 rtsp_demuxer_select="http_protocol rtpdec"
2271 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2272 sap_demuxer_select="sdp_demuxer"
2273 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2274 sdp_demuxer_select="rtpdec"
2275 smoothstreaming_muxer_select="ismv_muxer"
2276 spdif_muxer_select="aac_parser"
2277 spx_muxer_select="ogg_muxer"
2278 swf_demuxer_suggest="zlib"
2279 tak_demuxer_select="tak_parser"
2280 tg2_muxer_select="mov_muxer"
2281 tgp_muxer_select="mov_muxer"
2282 w64_demuxer_select="wav_demuxer"
2283 wav_demuxer_select="riffdec"
2284 wav_muxer_select="riffenc"
2285 webm_muxer_select="iso_media riffenc"
2286 webm_muxer_suggest="libopus_encoder libvorbis_encoder libvpx_vp8_encoder libvpx_vp9_encoder"
2287 wtv_demuxer_select="mpegts_demuxer riffdec"
2288 xmv_demuxer_select="riffdec"
2289 xwma_demuxer_select="riffdec"
2290
2291 # indevs / outdevs
2292 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2293 alsa_outdev_deps="alsa_asoundlib_h"
2294 avfoundation_indev_deps="AVFoundation_AVFoundation_h"
2295 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2296 dv1394_indev_deps="dv1394"
2297 dv1394_indev_select="dv_demuxer"
2298 fbdev_indev_deps="linux_fb_h"
2299 jack_indev_deps="jack_jack_h pthreads"
2300 libcdio_indev_deps="libcdio"
2301 libdc1394_indev_deps="libdc1394"
2302 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2303 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2304 pulse_indev_deps="libpulse"
2305 sndio_indev_deps="sndio_h"
2306 sndio_outdev_deps="sndio_h"
2307 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2308 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2309 vfwcap_indev_extralibs="-lavicap32"
2310 x11grab_indev_deps="x11grab"
2311 x11grab_xcb_indev_deps="libxcb"
2312
2313 # protocols
2314 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2315 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2316 ffrtmpcrypt_protocol_select="tcp_protocol"
2317 ffrtmphttp_protocol_deps="!librtmp_protocol"
2318 ffrtmphttp_protocol_select="http_protocol"
2319 gopher_protocol_select="network"
2320 http_protocol_select="tcp_protocol"
2321 httpproxy_protocol_select="tcp_protocol"
2322 https_protocol_select="tls_protocol"
2323 icecast_protocol_select="http_protocol"
2324 librtmp_protocol_deps="librtmp"
2325 librtmpe_protocol_deps="librtmp"
2326 librtmps_protocol_deps="librtmp"
2327 librtmpt_protocol_deps="librtmp"
2328 librtmpte_protocol_deps="librtmp"
2329 mmsh_protocol_select="http_protocol"
2330 mmst_protocol_select="network"
2331 rtmp_protocol_deps="!librtmp_protocol"
2332 rtmp_protocol_select="tcp_protocol"
2333 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2334 rtmps_protocol_deps="!librtmp_protocol"
2335 rtmps_protocol_select="tls_protocol"
2336 rtmpt_protocol_select="ffrtmphttp_protocol"
2337 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2338 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2339 rtp_protocol_select="udp_protocol"
2340 sctp_protocol_deps="struct_sctp_event_subscribe"
2341 sctp_protocol_select="network"
2342 srtp_protocol_select="rtp_protocol srtp"
2343 tcp_protocol_select="network"
2344 tls_gnutls_protocol_deps="gnutls"
2345 tls_gnutls_protocol_select="tcp_protocol"
2346 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2347 tls_openssl_protocol_select="tcp_protocol"
2348 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2349 udp_protocol_select="network"
2350 unix_protocol_deps="sys_un_h"
2351 unix_protocol_select="network"
2352
2353 # filters
2354 blackframe_filter_deps="gpl"
2355 boxblur_filter_deps="gpl"
2356 bs2b_filter_deps="libbs2b"
2357 cropdetect_filter_deps="gpl"
2358 delogo_filter_deps="gpl"
2359 drawtext_filter_deps="libfreetype"
2360 frei0r_filter_deps="frei0r dlopen"
2361 frei0r_filter_extralibs='$ldl'
2362 frei0r_src_filter_deps="frei0r dlopen"
2363 frei0r_src_filter_extralibs='$ldl'
2364 hqdn3d_filter_deps="gpl"
2365 hwupload_cuda_filter_deps="cuda"
2366 interlace_filter_deps="gpl"
2367 ocv_filter_deps="libopencv"
2368 resample_filter_deps="avresample"
2369 scale_filter_deps="swscale"
2370 scale_npp_filter_deps="cuda libnpp"
2371 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2372
2373 # examples
2374 avcodec_example_deps="avcodec avutil"
2375 filter_audio_example_deps="avfilter avutil"
2376 metadata_example_deps="avformat avutil"
2377 output_example_deps="avcodec avformat avutil swscale"
2378 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2379 transcode_aac_example_deps="avcodec avformat avresample"
2380
2381 # libraries, in linking order
2382 avcodec_deps="avutil"
2383 avdevice_deps="avformat avcodec avutil"
2384 avfilter_deps="avutil"
2385 avformat_deps="avcodec avutil"
2386 avresample_deps="avutil"
2387 swscale_deps="avutil"
2388
2389 # programs
2390 avconv_deps="avcodec avfilter avformat avresample swscale"
2391 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2392                fps_filter null_filter resample_filter scale_filter
2393                setpts_filter trim_filter"
2394 avplay_deps="avcodec avfilter avformat avresample sdl"
2395 avplay_libs='$sdl_libs'
2396 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2397 avprobe_deps="avcodec avformat"
2398
2399 # documentation
2400 pod2man_deps="doc"
2401 texi2html_deps="doc"
2402
2403 # default parameters
2404
2405 logfile="config.log"
2406
2407 # installation paths
2408 prefix_default="/usr/local"
2409 bindir_default='${prefix}/bin'
2410 datadir_default='${prefix}/share/avconv'
2411 docdir_default='${prefix}/share/doc/libav'
2412 incdir_default='${prefix}/include'
2413 libdir_default='${prefix}/lib'
2414 mandir_default='${prefix}/share/man'
2415 shlibdir_default="$libdir_default"
2416
2417 # toolchain
2418 ar_default="ar"
2419 cc_default="gcc"
2420 host_cc_default="gcc"
2421 cp_f="cp -f"
2422 ln_s="ln -s -f"
2423 nm_default="nm -g"
2424 objformat="elf"
2425 pkg_config_default=pkg-config
2426 ranlib="ranlib"
2427 strip="strip"
2428 yasmexe="yasm"
2429
2430 # machine
2431 arch_default=$(uname -m)
2432 cpu="generic"
2433 intrinsics="none"
2434
2435 # OS
2436 target_os_default=$(tolower $(uname -s))
2437 host_os=$target_os_default
2438
2439 # configurable options
2440 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2441
2442 enable asm
2443 enable debug
2444 enable doc
2445 enable faan faandct faanidct
2446 enable optimizations
2447 enable safe_bitstream_reader
2448 enable static
2449 enable swscale_alpha
2450 enable valgrind_backtrace
2451
2452 # By default, enable only those hwaccels that have no external dependencies.
2453 enable d3d11va dxva2 vda vdpau
2454
2455 # build settings
2456 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2457 LIBPREF="lib"
2458 LIBSUF=".a"
2459 FULLNAME='$(NAME)$(BUILDSUF)'
2460 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2461 SLIBPREF="lib"
2462 SLIBSUF=".so"
2463 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2464 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2465 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2466 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2467 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2468 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2469
2470 asflags_filter=echo
2471 cflags_filter=echo
2472 ldflags_filter=echo
2473
2474 AS_C='-c'
2475 AS_O='-o $@'
2476 CC_C='-c'
2477 CC_E='-E -o $@'
2478 CC_O='-o $@'
2479 OBJCC_C='-c'
2480 OBJCC_E='-E -o $@'
2481 OBJCC_O='-o $@'
2482 LD_O='-o $@'
2483 LD_LIB='-l%'
2484 LD_PATH='-L'
2485 HOSTCC_C='-c'
2486 HOSTCC_E='-E -o $@'
2487 HOSTCC_O='-o $@'
2488 HOSTLD_O='-o $@'
2489
2490 host_libs='-lm'
2491 host_cflags_filter=echo
2492 host_ldflags_filter=echo
2493
2494 target_path='$(CURDIR)'
2495
2496 # since the object filename is not given with the -MM flag, the compiler
2497 # is only able to print the basename, and we must add the path ourselves
2498 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2499 DEPFLAGS='-MM'
2500
2501 # find source path
2502 if test -f configure; then
2503     source_path=.
2504 else
2505     source_path=$(cd $(dirname "$0"); pwd)
2506     echo "$source_path" | grep -q '[[:blank:]]' &&
2507         die "Out of tree builds are impossible with whitespace in source path."
2508     test -e "$source_path/config.h" &&
2509         die "Out of tree builds are impossible with config.h in source dir."
2510 fi
2511
2512 for v in "$@"; do
2513     r=${v#*=}
2514     l=${v%"$r"}
2515     r=$(sh_quote "$r")
2516     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2517 done
2518
2519 find_things(){
2520     thing=$1
2521     pattern=$2
2522     file=$source_path/$3
2523     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2524 }
2525
2526 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2527 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2528 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2529 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2530 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2531 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2532 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2533 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2534 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2535
2536 find_things_extern(){
2537     thing=$1
2538     pattern=$2
2539     file=$source_path/$3
2540     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2541 }
2542
2543 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2544 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2545
2546 ALL_COMPONENTS="
2547     $BSF_LIST
2548     $DECODER_LIST
2549     $DEMUXER_LIST
2550     $ENCODER_LIST
2551     $FILTER_LIST
2552     $HWACCEL_LIST
2553     $INDEV_LIST
2554     $MUXER_LIST
2555     $OUTDEV_LIST
2556     $PARSER_LIST
2557     $PROTOCOL_LIST
2558 "
2559
2560 for n in $COMPONENT_LIST; do
2561     v=$(toupper ${n%s})_LIST
2562     eval enable \$$v
2563     eval ${n}_if_any="\$$v"
2564 done
2565
2566 enable $ARCH_EXT_LIST
2567
2568 die_unknown(){
2569     echo "Unknown option \"$1\"."
2570     echo "See $0 --help for available options."
2571     exit 1
2572 }
2573
2574 print_3_columns() {
2575     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2576 }
2577
2578 show_list() {
2579     suffix=_$1
2580     shift
2581     echo $* | sed s/$suffix//g | print_3_columns
2582     exit 0
2583 }
2584
2585 rand_list(){
2586     IFS=', '
2587     set -- $*
2588     unset IFS
2589     for thing; do
2590         comp=${thing%:*}
2591         prob=${thing#$comp}
2592         prob=${prob#:}
2593         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2594         echo "prob ${prob:-0.5}"
2595         printf '%s\n' $comp
2596     done
2597 }
2598
2599 do_random(){
2600     action=$1
2601     shift
2602     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2603     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2604 }
2605
2606 for opt do
2607     optval="${opt#*=}"
2608     case "$opt" in
2609         --extra-ldflags=*)
2610             add_ldflags $optval
2611         ;;
2612         --extra-ldexeflags=*)
2613             add_ldexeflags $optval
2614         ;;
2615         --extra-libs=*)
2616             add_extralibs $optval
2617         ;;
2618         --disable-devices)
2619             disable $INDEV_LIST $OUTDEV_LIST
2620         ;;
2621         --enable-debug=*)
2622             debuglevel="$optval"
2623         ;;
2624         --disable-programs)
2625             disable $PROGRAM_LIST
2626         ;;
2627         --disable-everything)
2628             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2629         ;;
2630         --disable-all)
2631             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2632             disable $LIBRARY_LIST $PROGRAM_LIST doc
2633         ;;
2634         --enable-random|--disable-random)
2635             action=${opt%%-random}
2636             do_random ${action#--} $COMPONENT_LIST
2637         ;;
2638         --enable-random=*|--disable-random=*)
2639             action=${opt%%-random=*}
2640             do_random ${action#--} $optval
2641         ;;
2642         --enable-*=*|--disable-*=*)
2643             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2644             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2645             eval list=\$$(toupper $thing)_LIST
2646             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2647             $action $(filter "$name" $list)
2648         ;;
2649         --enable-avserver|--disable-avserver*)
2650             warn "avserver has been removed, the ${opt} option is only"\
2651                  "provided for compatibility and will be removed in the future"
2652         ;;
2653         --enable-?*|--disable-?*)
2654             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2655             if is_in $option $COMPONENT_LIST; then
2656                 test $action = disable && action=unset
2657                 eval $action \$$(toupper ${option%s})_LIST
2658             elif is_in $option $CMDLINE_SELECT; then
2659                 $action $option
2660             else
2661                 die_unknown $opt
2662             fi
2663         ;;
2664         --list-*)
2665             NAME="${opt#--list-}"
2666             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2667             NAME=${NAME%s}
2668             eval show_list $NAME \$$(toupper $NAME)_LIST
2669         ;;
2670         --help|-h) show_help
2671         ;;
2672         *)
2673             optname="${opt%%=*}"
2674             optname="${optname#--}"
2675             optname=$(echo "$optname" | sed 's/-/_/g')
2676             if is_in $optname $CMDLINE_SET; then
2677                 eval $optname='$optval'
2678             elif is_in $optname $CMDLINE_APPEND; then
2679                 append $optname "$optval"
2680             else
2681                 die_unknown $opt
2682             fi
2683         ;;
2684     esac
2685 done
2686
2687 for e in $env; do
2688     eval "export $e"
2689 done
2690
2691 disabled logging && logfile=/dev/null
2692
2693 # Disable all the library-specific components if the library itself
2694 # is disabled, see AVCODEC_LIST and following _LIST variables.
2695
2696 disable_components(){
2697     disabled ${1} && disable $(
2698         eval components="\$$(toupper ${1})_COMPONENTS"
2699         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2700     )
2701 }
2702
2703 map 'disable_components $v' $LIBRARY_LIST
2704
2705 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2706 set >> $logfile
2707
2708 case "$toolchain" in
2709     *-asan)
2710         cc_default="${toolchain%-asan}"
2711         add_cflags  -fsanitize=address
2712         add_ldflags -fsanitize=address
2713     ;;
2714     *-msan)
2715         cc_default="${toolchain%-msan}"
2716         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2717         add_ldflags -fsanitize=memory
2718     ;;
2719     *-tsan)
2720         cc_default="${toolchain%-tsan}"
2721         add_cflags  -fsanitize=thread -pie
2722         add_ldflags -fsanitize=thread -pie
2723         case "$toolchain" in
2724             gcc-tsan)
2725                 add_cflags  -fPIC
2726                 add_ldflags -fPIC
2727                 ;;
2728         esac
2729     ;;
2730     *-usan)
2731         cc_default="${toolchain%-usan}"
2732         add_cflags  -fsanitize=undefined
2733         add_ldflags -fsanitize=undefined
2734         case "$toolchain" in
2735             clang-usan)
2736                 add_cflags -O1
2737                 ;;
2738         esac
2739     ;;
2740     valgrind-*)
2741         target_exec_default="valgrind"
2742         case "$toolchain" in
2743             valgrind-massif)
2744                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2745                 ;;
2746             valgrind-memcheck)
2747                 target_exec_args="--track-origins=yes --leak-check=full"
2748                 ;;
2749         esac
2750     ;;
2751     msvc)
2752         # Check whether the current MSVC version needs the C99 converter.
2753         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2754         # support enough of C99 to build libav. Default to the new
2755         # behaviour if the regexp was unable to match anything, since this
2756         # successfully parses the version number of existing supported
2757         # versions that require the converter (MSVC 2010 and 2012).
2758         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2759         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2760             cc_default="cl"
2761         else
2762             cc_default="c99wrap cl"
2763         fi
2764         ld_default="$source_path/compat/windows/mslink"
2765         nm_default="dumpbin -symbols"
2766         ar_default="lib"
2767         case "$arch" in
2768         arm*)
2769             as_default="armasm"
2770             ;;
2771         esac
2772         target_os_default="win32"
2773         # Use a relative path for TMPDIR. This makes sure all the
2774         # ffconf temp files are written with a relative path, avoiding
2775         # issues with msys/win32 path conversion for MSVC parameters
2776         # such as -Fo<file> or -out:<file>.
2777         TMPDIR=.
2778     ;;
2779     icl)
2780         cc_default="icl"
2781         ld_default="xilink"
2782         nm_default="dumpbin -symbols"
2783         ar_default="xilib"
2784         target_os_default="win32"
2785         TMPDIR=.
2786     ;;
2787     gcov)
2788         add_cflags  -fprofile-arcs -ftest-coverage
2789         add_ldflags -fprofile-arcs -ftest-coverage
2790     ;;
2791     llvm-cov)
2792         add_cflags -fprofile-arcs -ftest-coverage
2793         add_ldflags --coverage
2794     ;;
2795     hardened)
2796         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2797         add_cflags   -fno-strict-overflow -fstack-protector-all
2798         add_ldflags  -Wl,-z,relro -Wl,-z,now
2799     ;;
2800     ?*)
2801         die "Unknown toolchain $toolchain"
2802     ;;
2803 esac
2804
2805 test -n "$cross_prefix" && enable cross_compile
2806
2807 if enabled cross_compile; then
2808     test -n "$arch" && test -n "$target_os" ||
2809         die "Must specify target arch and OS when cross-compiling"
2810 fi
2811
2812 ar_default="${cross_prefix}${ar_default}"
2813 cc_default="${cross_prefix}${cc_default}"
2814 occ_default="${cross_prefix}${occ_default}"
2815 nm_default="${cross_prefix}${nm_default}"
2816 pkg_config_default="${cross_prefix}${pkg_config_default}"
2817 ranlib="${cross_prefix}${ranlib}"
2818 strip="${cross_prefix}${strip}"
2819
2820 sysinclude_default="${sysroot}/usr/include"
2821
2822 set_default arch cc pkg_config sysinclude target_exec target_os
2823 enabled cross_compile || host_cc_default=$cc
2824 set_default host_cc
2825
2826 if ! $pkg_config --version >/dev/null 2>&1; then
2827     warn "$pkg_config not found, library detection may fail."
2828     pkg_config=false
2829 fi
2830
2831 exesuf() {
2832     case $1 in
2833         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2834     esac
2835 }
2836
2837 EXESUF=$(exesuf $target_os)
2838 HOSTEXESUF=$(exesuf $host_os)
2839
2840 # set temporary file name
2841 : ${TMPDIR:=$TEMPDIR}
2842 : ${TMPDIR:=$TMP}
2843 : ${TMPDIR:=/tmp}
2844
2845 if ! check_cmd mktemp -u XXXXXX; then
2846     # simple replacement for missing mktemp
2847     # NOT SAFE FOR GENERAL USE
2848     mktemp(){
2849         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2850     }
2851 fi
2852
2853 tmpfile(){
2854     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2855         (set -C; exec > $tmp) 2>/dev/null ||
2856         die "Unable to create temporary file in $TMPDIR."
2857     append TMPFILES $tmp
2858     eval $1=$tmp
2859 }
2860
2861 trap 'rm -f -- $TMPFILES' EXIT
2862
2863 tmpfile TMPASM .asm
2864 tmpfile TMPC   .c
2865 tmpfile TMPE   $EXESUF
2866 tmpfile TMPH   .h
2867 tmpfile TMPO   .o
2868 tmpfile TMPS   .S
2869 tmpfile TMPSH  .sh
2870 tmpfile TMPV   .ver
2871
2872 unset -f mktemp
2873
2874 chmod +x $TMPE
2875
2876 # make sure we can execute files in $TMPDIR
2877 cat > $TMPSH 2>> $logfile <<EOF
2878 #! /bin/sh
2879 EOF
2880 chmod +x $TMPSH >> $logfile 2>&1
2881 if ! $TMPSH >> $logfile 2>&1; then
2882     cat <<EOF
2883 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2884 variable to another directory and make sure that it is not mounted noexec.
2885 EOF
2886     die "Sanity test failed."
2887 fi
2888
2889 armasm_flags(){
2890     for flag; do
2891         case $flag in
2892             # Filter out MSVC cl.exe options from cflags that shouldn't
2893             # be passed to gas-preprocessor
2894             -M[TD]*)                                            ;;
2895             *)                  echo $flag                      ;;
2896         esac
2897    done
2898 }
2899
2900 ccc_flags(){
2901     for flag; do
2902         case $flag in
2903             -std=c99)           echo -c99                       ;;
2904             -mcpu=*)            echo -arch ${flag#*=}           ;;
2905             -mieee)             echo -ieee                      ;;
2906             -O*|-fast)          echo $flag                      ;;
2907             -fno-math-errno)    echo -assume nomath_errno       ;;
2908             -g)                 echo -g3                        ;;
2909             -Wall)              echo -msg_enable level2         ;;
2910             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2911             -Wl,*)              echo $flag                      ;;
2912             -f*|-W*)                                            ;;
2913             *)                  echo $flag                      ;;
2914         esac
2915    done
2916 }
2917
2918 cparser_flags(){
2919     for flag; do
2920         case $flag in
2921             -Wno-switch)             echo -Wno-switch-enum ;;
2922             -Wno-format-zero-length) ;;
2923             -Wdisabled-optimization) ;;
2924             -Wno-pointer-sign)       echo -Wno-other ;;
2925             *)                       echo $flag ;;
2926         esac
2927     done
2928 }
2929
2930 msvc_common_flags(){
2931     for flag; do
2932         case $flag in
2933             # In addition to specifying certain flags under the compiler
2934             # specific filters, they must be specified here as well or else the
2935             # generic catch all at the bottom will print the original flag.
2936             -Wall)                ;;
2937             -std=c99)             ;;
2938             # Common flags
2939             -fomit-frame-pointer) ;;
2940             -g)                   echo -Z7 ;;
2941             -fno-math-errno)      ;;
2942             -fno-common)          ;;
2943             -fno-signed-zeros)    ;;
2944             -fPIC)                ;;
2945             -mthumb)              ;;
2946             -march=*)             ;;
2947             -lz)                  echo zlib.lib ;;
2948             -lavifil32)           echo vfw32.lib ;;
2949             -lavicap32)           echo vfw32.lib user32.lib ;;
2950             -lx264)               echo libx264.lib ;;
2951             -l*)                  echo ${flag#-l}.lib ;;
2952             -L*)                  echo -libpath:${flag#-L} ;;
2953             *)                    echo $flag ;;
2954         esac
2955     done
2956 }
2957
2958 msvc_flags(){
2959     msvc_common_flags "$@"
2960     for flag; do
2961         case $flag in
2962             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2963                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2964                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2965                                        -wd4273 -wd4554 -wd4701 ;;
2966         esac
2967     done
2968 }
2969
2970 icl_flags(){
2971     msvc_common_flags "$@"
2972     for flag; do
2973         case $flag in
2974             # Despite what Intel's documentation says -Wall, which is supported
2975             # on Windows, does enable remarks so disable them here.
2976             -Wall)                echo $flag -Qdiag-disable:remark ;;
2977             -std=c99)             echo -Qstd=c99 ;;
2978         esac
2979     done
2980 }
2981
2982 pgi_flags(){
2983     for flag; do
2984         case $flag in
2985             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2986             -fomit-frame-pointer) echo -Mnoframe ;;
2987             -g)                   echo -gopt ;;
2988             *)                    echo $flag ;;
2989         esac
2990     done
2991 }
2992
2993 suncc_flags(){
2994     for flag; do
2995         case $flag in
2996             -march=*|-mcpu=*)
2997                 case "${flag#*=}" in
2998                     native)                   echo -xtarget=native       ;;
2999                     v9|niagara)               echo -xarch=sparc          ;;
3000                     ultrasparc)               echo -xarch=sparcvis       ;;
3001                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3002                     i586|pentium)             echo -xchip=pentium        ;;
3003                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3004                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3005                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3006                     pentium4*)          echo -xtarget=pentium4           ;;
3007                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3008                     *-sse3)             echo -xarch=sse3                 ;;
3009                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3010                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3011                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3012                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3013                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3014                     k8|opteron|athlon64|athlon-fx)
3015                                                echo -xarch=sse2a         ;;
3016                     athlon*)                   echo -xarch=pentium_proa  ;;
3017                 esac
3018                 ;;
3019             -std=c99)             echo -xc99              ;;
3020             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3021             -fPIC)                echo -KPIC -xcode=pic32 ;;
3022             -W*,*)                echo $flag              ;;
3023             -f*-*|-W*|-mimpure-text)                      ;;
3024             -shared)              echo -G                 ;;
3025             *)                    echo $flag              ;;
3026         esac
3027     done
3028 }
3029
3030 tms470_flags(){
3031     for flag; do
3032         case $flag in
3033             -march=*|-mcpu=*)
3034                 case "${flag#*=}" in
3035                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3036                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3037                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3038                     armv6*|arm11*)          echo -mv=6   ;;
3039                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3040                                             echo -mv=5e  ;;
3041                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3042                 esac
3043                 ;;
3044             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3045             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3046             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3047             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3048             -msoft-float)   echo --float_support=vfplib       ;;
3049             -O[0-3]|-mf=*)  echo $flag                        ;;
3050             -g)             echo -g -mn                       ;;
3051             -pds=*)         echo $flag                        ;;
3052             -D*|-I*)        echo $flag                        ;;
3053             --gcc|--abi=*)  echo $flag                        ;;
3054             -me)            echo $flag                        ;;
3055         esac
3056     done
3057 }
3058
3059 probe_cc(){
3060     pfx=$1
3061     _cc=$2
3062
3063     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3064     unset _ld_o _ldflags _ld_lib _ld_path
3065     unset _depflags _DEPCMD _DEPFLAGS
3066     _flags_filter=echo
3067
3068     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3069         _type=llvm_gcc
3070         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3071         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3072         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3073         _cflags_speed='-O3'
3074         _cflags_size='-Os'
3075     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3076         _type=gcc
3077         gcc_version=$($_cc --version | head -n1)
3078         gcc_basever=$($_cc -dumpversion)
3079         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3080         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3081         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3082         if ! $_cc -dumpversion | grep -q '^2\.'; then
3083             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3084         fi
3085         _cflags_speed='-O3'
3086         _cflags_size='-Os'
3087     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3088         _type=icc
3089         _ident=$($_cc --version | head -n1)
3090         _depflags='-MMD'
3091         _cflags_speed='-O3'
3092         _cflags_size='-Os'
3093         _cflags_noopt='-O1'
3094     elif $_cc -v 2>&1 | grep -q xlc; then
3095         _type=xlc
3096         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3097         _cflags_speed='-O5'
3098         _cflags_size='-O5 -qcompact'
3099     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3100         _type=ccc
3101         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3102         _DEPFLAGS='-M'
3103         _cflags_speed='-fast'
3104         _cflags_size='-O1'
3105         _flags_filter=ccc_flags
3106     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3107         test -d "$sysroot" || die "No valid sysroot specified."
3108         _type=armcc
3109         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3110         armcc_conf="$PWD/armcc.conf"
3111         $_cc --arm_linux_configure                 \
3112              --arm_linux_config_file="$armcc_conf" \
3113              --configure_sysroot="$sysroot"        \
3114              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3115              die "Error creating armcc configuration file."
3116         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3117         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3118         as_default="${cross_prefix}gcc"
3119         _depflags='-MMD'
3120         _cflags_speed='-O3'
3121         _cflags_size='-Os'
3122     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3123         _type=tms470
3124         _ident=$($_cc -version | head -n1 | tr -s ' ')
3125         _flags='--gcc --abi=eabi -me'
3126         _cc_e='-ppl -fe=$@'
3127         _cc_o='-fe=$@'
3128         _depflags='-ppa -ppd=$(@:.o=.d)'
3129         _cflags_speed='-O3 -mf=5'
3130         _cflags_size='-O3 -mf=2'
3131         _flags_filter=tms470_flags
3132     elif $_cc -v 2>&1 | grep -q clang; then
3133         _type=clang
3134         _ident=$($_cc --version 2>/dev/null | head -n1)
3135         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3136         _cflags_speed='-O3'
3137         _cflags_size='-Os'
3138     elif $_cc -V 2>&1 | grep -q Sun; then
3139         _type=suncc
3140         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3141         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3142         _DEPFLAGS='-xM1 -xc99'
3143         _ldflags='-std=c99'
3144         _cflags_speed='-O5'
3145         _cflags_size='-O5 -xspace'
3146         _flags_filter=suncc_flags
3147     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3148         _type=pathscale
3149         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3150         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3151         _cflags_speed='-O2'
3152         _cflags_size='-Os'
3153         _flags_filter='filter_out -Wdisabled-optimization'
3154     elif $_cc -v 2>&1 | grep -q Open64; then
3155         _type=open64
3156         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3157         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3158         _cflags_speed='-O2'
3159         _cflags_size='-Os'
3160         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3161     elif $_cc -V 2>&1 | grep -q Portland; then
3162         _type=pgi
3163         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3164         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3165         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3166         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3167         _cflags_noopt="-O1"
3168         _flags_filter=pgi_flags
3169     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3170         _type=armasm
3171         _ident=$($_cc | head -n1)
3172         # 4509: "This form of conditional instruction is deprecated"
3173         _flags="-nologo -ignore 4509"
3174         _flags_filter=armasm_flags
3175     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3176         _type=msvc
3177         _ident=$($_cc 2>&1 | head -n1)
3178         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3179         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3180         _cflags_speed="-O2"
3181         _cflags_size="-O1"
3182         if $_cc -nologo- 2>&1 | grep -q Linker; then
3183             _ld_o='-out:$@'
3184         else
3185             _ld_o='-Fe$@'
3186         fi
3187         _cc_o='-Fo$@'
3188         _cc_e='-P -Fi$@'
3189         _flags_filter=msvc_flags
3190         _ld_lib='lib%.a'
3191         _ld_path='-libpath:'
3192         _flags='-nologo'
3193         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3194     elif $_cc 2>&1 | grep -q Intel; then
3195         _type=icl
3196         _ident=$($_cc 2>&1 | head -n1)
3197         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3198         # Not only is O3 broken on 13.x+ but it is slower on all previous
3199         # versions (tested) as well.
3200         _cflags_speed="-O2"
3201         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3202         if $_cc 2>&1 | grep -q Linker; then
3203             _ld_o='-out:$@'
3204         else
3205             _ld_o='-Fe$@'
3206         fi
3207         _cc_o='-Fo$@'
3208         _cc_e='-P'
3209         _flags_filter=icl_flags
3210         _ld_lib='lib%.a'
3211         _ld_path='-libpath:'
3212         # -Qdiag-error to make icl error when seeing certain unknown arguments
3213         _flags='-nologo -Qdiag-error:4044,10157'
3214         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3215         # with MSVC which enables it by default.
3216         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS'
3217     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3218         _type=cparser
3219         _ident=$($_cc --version | head -n1)
3220         _depflags='-MMD'
3221         _cflags_speed='-O4'
3222         _cflags_size='-O2'
3223         _flags_filter=cparser_flags
3224     fi
3225
3226     eval ${pfx}_type=\$_type
3227     eval ${pfx}_ident=\$_ident
3228 }
3229
3230 set_ccvars(){
3231     eval ${1}_C=\${_cc_c-\${${1}_C}}
3232     eval ${1}_E=\${_cc_e-\${${1}_E}}
3233     eval ${1}_O=\${_cc_o-\${${1}_O}}
3234
3235     if [ -n "$_depflags" ]; then
3236         eval ${1}_DEPFLAGS=\$_depflags
3237     else
3238         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3239         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3240         eval DEP${1}FLAGS=\$_flags
3241     fi
3242 }
3243
3244 probe_cc cc "$cc"
3245 cflags_filter=$_flags_filter
3246 cflags_speed=$_cflags_speed
3247 cflags_size=$_cflags_size
3248 cflags_noopt=$_cflags_noopt
3249 add_cflags $_flags $_cflags
3250 cc_ldflags=$_ldflags
3251 set_ccvars CC
3252
3253 probe_cc hostcc "$host_cc"
3254 host_cflags_filter=$_flags_filter
3255 add_host_cflags  $_flags $_cflags
3256 set_ccvars HOSTCC
3257
3258 test -n "$cc_type" && enable $cc_type ||
3259     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3260
3261 : ${as_default:=$cc}
3262 : ${objcc_default:=$cc}
3263 : ${dep_cc_default:=$cc}
3264 : ${ld_default:=$cc}
3265 : ${host_ld_default:=$host_cc}
3266 set_default ar as objcc dep_cc ld host_ld
3267
3268 probe_cc as "$as"
3269 asflags_filter=$_flags_filter
3270 add_asflags $_flags $_cflags
3271 set_ccvars AS
3272
3273 probe_cc objcc "$objcc"
3274 objcflags_filter=$_flags_filter
3275 add_objcflags $_flags $_cflags
3276 set_ccvars OBJC
3277
3278 probe_cc ld "$ld"
3279 ldflags_filter=$_flags_filter
3280 add_ldflags $_flags $_ldflags
3281 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3282 LD_O=${_ld_o-$LD_O}
3283 LD_LIB=${_ld_lib-$LD_LIB}
3284 LD_PATH=${_ld_path-$LD_PATH}
3285
3286 probe_cc hostld "$host_ld"
3287 host_ldflags_filter=$_flags_filter
3288 add_host_ldflags $_flags $_ldflags
3289 HOSTLD_O=${_ld_o-$HOSTLD_O}
3290
3291 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3292     probe_cc depcc "$dep_cc"
3293     CCDEP=${_DEPCMD:-$DEPCMD}
3294     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3295     DEPCCFLAGS=$_flags
3296 fi
3297
3298 if $ar 2>&1 | grep -q Microsoft; then
3299     arflags="-nologo"
3300     ar_o='-out:$@'
3301 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3302     arflags="rq"
3303     ar_o='$@'
3304 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3305     arflags='-Xany -r -c'
3306     ar_o='$@'
3307 else
3308     arflags="rc"
3309     ar_o='$@'
3310 fi
3311
3312 add_cflags $extra_cflags
3313 add_objcflags $extra_objcflags
3314 add_asflags $extra_cflags
3315
3316 if test -n "$sysroot"; then
3317     case "$cc_type" in
3318         gcc|llvm_gcc|clang)
3319             add_cppflags --sysroot="$sysroot"
3320             add_ldflags --sysroot="$sysroot"
3321         ;;
3322         tms470)
3323             add_cppflags -I"$sysinclude"
3324             add_ldflags  --sysroot="$sysroot"
3325         ;;
3326     esac
3327 fi
3328
3329 if test "$cpu" = host; then
3330     enabled cross_compile &&
3331         die "--cpu=host makes no sense when cross-compiling."
3332
3333     case "$cc_type" in
3334         gcc|llvm_gcc)
3335             check_native(){
3336                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3337                 sed -n "/cc1.*$1=/{
3338                             s/.*$1=\\([^ ]*\\).*/\\1/
3339                             p
3340                             q
3341                         }" $TMPE
3342             }
3343             cpu=$(check_native -march || check_native -mcpu)
3344         ;;
3345     esac
3346
3347     test "${cpu:-host}" = host &&
3348         die "--cpu=host not supported with compiler $cc"
3349 fi
3350
3351 # Deal with common $arch aliases
3352 case "$arch" in
3353     aarch64|arm64)
3354         arch="aarch64"
3355     ;;
3356     arm*)
3357         arch="arm"
3358     ;;
3359     mips*|IP*)
3360         case "$arch" in
3361         *el)
3362             add_cppflags -EL
3363             add_ldflags -EL
3364         ;;
3365         *eb)
3366             add_cppflags -EB
3367             add_ldflags -EB
3368         ;;
3369         esac
3370         arch="mips"
3371     ;;
3372     parisc*|hppa*)
3373         arch="parisc"
3374     ;;
3375     "Power Macintosh"|ppc*|powerpc*)
3376         arch="ppc"
3377     ;;
3378     s390|s390x)
3379         arch="s390"
3380     ;;
3381     sh4|sh)
3382         arch="sh4"
3383     ;;
3384     sun4u|sparc*)
3385         arch="sparc"
3386     ;;
3387     tilegx|tile-gx)
3388         arch="tilegx"
3389     ;;
3390     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3391         arch="x86"
3392     ;;
3393 esac
3394
3395 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3396 enable $arch
3397
3398 # Add processor-specific flags
3399 if enabled aarch64; then
3400
3401     case $cpu in
3402         armv*)
3403             cpuflags="-march=$cpu"
3404         ;;
3405         *)
3406             cpuflags="-mcpu=$cpu"
3407         ;;
3408     esac
3409
3410 elif enabled alpha; then
3411
3412     cpuflags="-mcpu=$cpu"
3413
3414 elif enabled arm; then
3415
3416     check_arm_arch() {
3417         check_cpp_condition stddef.h \
3418             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3419             $cpuflags
3420     }
3421
3422     probe_arm_arch() {
3423         if   check_arm_arch 4;        then echo armv4;
3424         elif check_arm_arch 4T;       then echo armv4t;
3425         elif check_arm_arch 5;        then echo armv5;
3426         elif check_arm_arch 5E;       then echo armv5e;
3427         elif check_arm_arch 5T;       then echo armv5t;
3428         elif check_arm_arch 5TE;      then echo armv5te;
3429         elif check_arm_arch 5TEJ;     then echo armv5te;
3430         elif check_arm_arch 6;        then echo armv6;
3431         elif check_arm_arch 6J;       then echo armv6j;
3432         elif check_arm_arch 6K;       then echo armv6k;
3433         elif check_arm_arch 6Z;       then echo armv6z;
3434         elif check_arm_arch 6ZK;      then echo armv6zk;
3435         elif check_arm_arch 6T2;      then echo armv6t2;
3436         elif check_arm_arch 7;        then echo armv7;
3437         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3438         elif check_arm_arch 7S;       then echo armv7-a;
3439         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3440         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3441         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3442         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3443         fi
3444     }
3445
3446     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3447
3448     case $cpu in
3449         armv*)
3450             cpuflags="-march=$cpu"
3451             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3452         ;;
3453         *)
3454             cpuflags="-mcpu=$cpu"
3455             case $cpu in
3456                 cortex-a*)                               subarch=armv7a  ;;
3457                 cortex-r*)                               subarch=armv7r  ;;
3458                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3459                 arm11*)                                  subarch=armv6   ;;
3460                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3461                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3462                 *)                             subarch=$(probe_arm_arch) ;;
3463             esac
3464         ;;
3465     esac
3466
3467     case "$subarch" in
3468         armv5t*)    enable fast_clz                ;;
3469         armv[6-8]*) enable fast_clz fast_unaligned ;;
3470     esac
3471
3472 elif enabled avr32; then
3473
3474     case $cpu in
3475         ap7[02]0[0-2])
3476             subarch="avr32_ap"
3477             cpuflags="-mpart=$cpu"
3478         ;;
3479         ap)
3480             subarch="avr32_ap"
3481             cpuflags="-march=$cpu"
3482         ;;
3483         uc3[ab]*)
3484             subarch="avr32_uc"
3485             cpuflags="-mcpu=$cpu"
3486         ;;
3487         uc)
3488             subarch="avr32_uc"
3489             cpuflags="-march=$cpu"
3490         ;;
3491     esac
3492
3493 elif enabled bfin; then
3494
3495     cpuflags="-mcpu=$cpu"
3496
3497 elif enabled mips; then
3498
3499     cpuflags="-march=$cpu"
3500
3501 elif enabled ppc; then
3502
3503     disable ldbrx
3504
3505     case $(tolower $cpu) in
3506         601|ppc601|powerpc601)
3507             cpuflags="-mcpu=601"
3508             disable altivec
3509         ;;
3510         603*|ppc603*|powerpc603*)
3511             cpuflags="-mcpu=603"
3512             disable altivec
3513         ;;
3514         604*|ppc604*|powerpc604*)
3515             cpuflags="-mcpu=604"
3516             disable altivec
3517         ;;
3518         g3|75*|ppc75*|powerpc75*)
3519             cpuflags="-mcpu=750"
3520             disable altivec
3521         ;;
3522         g4|745*|ppc745*|powerpc745*)
3523             cpuflags="-mcpu=7450"
3524             disable vsx
3525         ;;
3526         74*|ppc74*|powerpc74*)
3527             cpuflags="-mcpu=7400"
3528             disable vsx
3529         ;;
3530         g5|970|ppc970|powerpc970)
3531             cpuflags="-mcpu=970"
3532             disable vsx
3533         ;;
3534         power[3-6]*)
3535             cpuflags="-mcpu=$cpu"
3536             disable vsx
3537         ;;
3538         power[7-8]*)
3539             cpuflags="-mcpu=$cpu"
3540             enable ldbrx
3541         ;;
3542         cell)
3543             cpuflags="-mcpu=cell"
3544             enable ldbrx
3545             disable vsx
3546         ;;
3547         e500mc)
3548             cpuflags="-mcpu=e500mc"
3549             disable altivec
3550         ;;
3551         e500v2)
3552             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3553             disable altivec
3554             disable dcbzl
3555         ;;
3556         e500)
3557             cpuflags="-mcpu=8540 -mhard-float"
3558             disable altivec
3559             disable dcbzl
3560         ;;
3561     esac
3562
3563 elif enabled sparc; then
3564
3565     case $cpu in
3566         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3567             cpuflags="-mcpu=$cpu"
3568         ;;
3569         ultrasparc*|niagara[234])
3570             cpuflags="-mcpu=$cpu"
3571         ;;
3572     esac
3573
3574 elif enabled x86; then
3575
3576     case $cpu in
3577         i[345]86|pentium)
3578             cpuflags="-march=$cpu"
3579             disable i686
3580             disable mmx
3581         ;;
3582         # targets that do NOT support nopl and conditional mov (cmov)
3583         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3584             cpuflags="-march=$cpu"
3585             disable i686
3586         ;;
3587         # targets that do support nopl and conditional mov (cmov)
3588         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3589             cpuflags="-march=$cpu"
3590             enable i686
3591             enable fast_cmov
3592         ;;
3593         # targets that do support conditional mov but on which it's slow
3594         pentium4|pentium4m|prescott|nocona)
3595             cpuflags="-march=$cpu"
3596             enable i686
3597             disable fast_cmov
3598         ;;
3599     esac
3600
3601 fi
3602
3603 if [ "$cpu" != generic ]; then
3604     add_cflags  $cpuflags
3605     add_asflags $cpuflags
3606     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3607 fi
3608
3609 # compiler sanity check
3610 check_exec <<EOF
3611 int main(void){ return 0; }
3612 EOF
3613 if test "$?" != 0; then
3614     echo "$cc is unable to create an executable file."
3615     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3616         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3617         echo "Only do this if you know what cross compiling means."
3618     fi
3619     die "C compiler test failed."
3620 fi
3621
3622 add_cppflags -D_ISOC99_SOURCE
3623 check_cflags -std=c99
3624 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3625 #include <stdlib.h>
3626 EOF
3627 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3628 #include <stdlib.h>
3629 EOF
3630
3631 add_host_cppflags -D_ISOC99_SOURCE
3632 check_host_cflags -std=c99
3633 check_host_cflags -Wall
3634 check_host_cflags -O3
3635
3636 check_64bit(){
3637     arch32=$1
3638     arch64=$2
3639     expr=$3
3640     check_code cc "" "int test[2*($expr) - 1]" &&
3641         subarch=$arch64 || subarch=$arch32
3642 }
3643
3644 case "$arch" in
3645     aarch64|alpha|ia64)
3646         spic=$shared
3647     ;;
3648     mips)
3649         check_64bit mips mips64 '_MIPS_SIM > 1'
3650         spic=$shared
3651     ;;
3652     parisc)
3653         check_64bit parisc parisc64 'sizeof(void *) > 4'
3654         spic=$shared
3655     ;;
3656     ppc)
3657         check_64bit ppc ppc64 'sizeof(void *) > 4'
3658         spic=$shared
3659     ;;
3660     s390)
3661         check_64bit s390 s390x 'sizeof(void *) > 4'
3662         spic=$shared
3663     ;;
3664     sparc)
3665         check_64bit sparc sparc64 'sizeof(void *) > 4'
3666         spic=$shared
3667     ;;
3668     x86)
3669         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3670         if test "$subarch" = "x86_64"; then
3671             spic=$shared
3672         fi
3673     ;;
3674 esac
3675
3676 enable $subarch
3677 enabled spic && enable_weak pic
3678
3679 # OS specific
3680 case $target_os in
3681     aix)
3682         SHFLAGS=-shared
3683         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3684         enabled shared && add_ldflags -Wl,-brtl
3685         ;;
3686     android)
3687         disable symver
3688         enable section_data_rel_ro
3689         SLIB_INSTALL_NAME='$(SLIBNAME)'
3690         SLIB_INSTALL_LINKS=
3691         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3692         ;;
3693     haiku)
3694         prefix_default="/boot/common"
3695         network_extralibs="-lnetwork"
3696         host_libs=
3697         ;;
3698     sunos)
3699         SHFLAGS='-shared -Wl,-h,$$(@F)'
3700         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3701         network_extralibs="-lsocket -lnsl"
3702         # When using suncc to build, the Solaris linker will mark
3703         # an executable with each instruction set encountered by
3704         # the Solaris assembler.  As our libraries contain their own
3705         # guards for processor-specific code, instead suppress
3706         # generation of the HWCAPS ELF section on Solaris x86 only.
3707         enabled_all suncc x86 &&
3708             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3709             add_ldflags -Wl,-M,mapfile
3710         nm_default='nm -P -g'
3711         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
3712         ;;
3713     netbsd)
3714         disable symver
3715         oss_indev_extralibs="-lossaudio"
3716         oss_outdev_extralibs="-lossaudio"
3717         ;;
3718     openbsd|bitrig)
3719         disable symver
3720         SHFLAGS='-shared'
3721         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3722         SLIB_INSTALL_LINKS=
3723         oss_indev_extralibs="-lossaudio"
3724         oss_outdev_extralibs="-lossaudio"
3725         ;;
3726     dragonfly)
3727         disable symver
3728         ;;
3729     freebsd)
3730         ;;
3731     bsd/os)
3732         add_extralibs -lpoll -lgnugetopt
3733         ;;
3734     darwin)
3735         enabled ppc && add_asflags -force_cpusubtype_ALL
3736         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3737         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3738         add_ldflags -Wl,-dynamic,-search_paths_first
3739         SLIBSUF=".dylib"
3740         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3741         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3742         objformat="macho"
3743         enabled x86_64 && objformat="macho64"
3744         enabled_any pic shared ||
3745             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3746         ;;
3747     msys*)
3748         die "Native MSYS builds are discouraged, please use the MINGW environment.";
3749         ;;
3750     mingw32*|mingw64*)
3751         if test $target_os = "mingw32ce"; then
3752             disable network
3753         else
3754             target_os=mingw32
3755         fi
3756         LIBTARGET=i386
3757         if enabled x86_64; then
3758             LIBTARGET="i386:x86-64"
3759         elif enabled arm; then
3760             LIBTARGET=arm-wince
3761         fi
3762         check_ldflags -Wl,--nxcompat
3763         check_ldflags -Wl,--dynamicbase
3764         shlibdir_default="$bindir_default"
3765         SLIBPREF=""
3766         SLIBSUF=".dll"
3767         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3768         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3769         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3770         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3771         SLIB_INSTALL_LINKS=
3772         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3773         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3774         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3775         objformat="win32"
3776         dlltool="${cross_prefix}dlltool"
3777         ranlib=:
3778         enable dos_paths
3779         ;;
3780     win32|win64)
3781         disable symver
3782         if enabled shared; then
3783             # Link to the import library instead of the normal static library
3784             # for shared libs.
3785             LD_LIB='%.lib'
3786             # Cannot build both shared and static libs with MSVC or icl.
3787             disable static
3788         fi
3789         shlibdir_default="$bindir_default"
3790         SLIBPREF=""
3791         SLIBSUF=".dll"
3792         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3793         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3794         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3795         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3796         SLIB_INSTALL_LINKS=
3797         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3798         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3799         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3800         objformat="win32"
3801         ranlib=:
3802         enable dos_paths
3803         ;;
3804     cygwin*)
3805         target_os=cygwin
3806         shlibdir_default="$bindir_default"
3807         SLIBPREF="cyg"
3808         SLIBSUF=".dll"
3809         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3810         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3811         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3812         SLIB_INSTALL_LINKS=
3813         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3814         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3815         objformat="win32"
3816         enable dos_paths
3817         ;;
3818     *-dos|freedos|opendos)
3819         network_extralibs="-lsocket"
3820         objformat="coff"
3821         enable dos_paths
3822         add_cppflags -U__STRICT_ANSI__
3823         ;;
3824     linux)
3825         enable dv1394
3826         enable section_data_rel_ro
3827         ;;
3828     irix*)
3829         target_os=irix
3830         ranlib="echo ignoring ranlib"
3831         ;;
3832     os/2*)
3833         ln_s="cp -f"
3834         objformat="aout"
3835         add_cppflags -D_GNU_SOURCE
3836         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3837         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3838         LIBSUF="_s.a"
3839         SLIBPREF=""
3840         SLIBSUF=".dll"
3841         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3842         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3843         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3844             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3845             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3846             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3847             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3848         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3849             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3850         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3851         enable dos_paths
3852         ;;
3853     gnu/kfreebsd)
3854         add_cppflags -D_BSD_SOURCE
3855         ;;
3856     gnu)
3857         ;;
3858     qnx)
3859         add_cppflags -D_QNX_SOURCE
3860         network_extralibs="-lsocket"
3861         ;;
3862     symbian)
3863         SLIBSUF=".dll"
3864         enable dos_paths
3865         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3866         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3867         add_ldflags -Wl,--target1-abs,--no-undefined \
3868                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3869                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3870         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3871                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3872                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3873         ;;
3874     osf1)
3875         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3876         ;;
3877     minix)
3878         ;;
3879     plan9)
3880         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3881                      -D_REENTRANT_SOURCE        \
3882                      -D_RESEARCH_SOURCE         \
3883                      -DFD_SETSIZE=96            \
3884                      -DHAVE_SOCK_OPTS
3885         add_compat strtod.o strtod=avpriv_strtod
3886         network_extralibs='-lbsd'
3887         exeobjs=compat/plan9/main.o
3888         cp_f='cp'
3889         ;;
3890     none)
3891         ;;
3892     *)
3893         die "Unknown OS '$target_os'."
3894         ;;
3895 esac
3896
3897 # determine libc flavour
3898
3899 probe_libc(){
3900     pfx=$1
3901     pfx_no_=${pfx%_}
3902     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3903     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3904         eval ${pfx}libc_type=uclibc
3905         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3906     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3907         eval ${pfx}libc_type=glibc
3908         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3909     # MinGW headers can be installed on Cygwin, so check for newlib first.
3910     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3911         eval ${pfx}libc_type=newlib
3912         add_${pfx}cppflags -U__STRICT_ANSI__
3913     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3914     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3915         eval ${pfx}libc_type=mingw64
3916         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3917         eval test \$${pfx_no_}cc_type = "gcc" &&
3918             add_${pfx}cppflags -D__printf__=__gnu_printf__
3919     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3920          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3921         eval ${pfx}libc_type=mingw32
3922         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3923             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3924             die "ERROR: MinGW32 runtime version must be >= 3.15."
3925         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3926         eval test \$${pfx_no_}cc_type = "gcc" &&
3927             add_${pfx}cppflags -D__printf__=__gnu_printf__
3928     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3929         eval ${pfx}libc_type=msvcrt
3930         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
3931             if [ "$pfx" = host_ ]; then
3932                 add_host_cppflags -Dsnprintf=_snprintf
3933             else
3934                 add_compat strtod.o strtod=avpriv_strtod
3935                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3936                                              _snprintf=avpriv_snprintf  \
3937                                              vsnprintf=avpriv_vsnprintf
3938             fi
3939         fi
3940         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3941         # 0x601 by default unless something else is set by the user.
3942         # This can easily lead to us detecting functions only present
3943         # in such new versions and producing binaries requiring windows 7.0.
3944         # Therefore explicitly set the default to XP unless the user has
3945         # set something else on the command line.
3946         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
3947         # family. For these cases, configure is free to use any functions
3948         # found in the SDK headers by default. (Alternatively, we could force
3949         # _WIN32_WINNT to 0x0602 in that case.)
3950         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3951             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
3952 #ifdef WINAPI_FAMILY
3953 #include <winapifamily.h>
3954 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
3955 #error not desktop
3956 #endif
3957 #endif
3958 EOF
3959     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3960         eval ${pfx}libc_type=klibc
3961     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3962         eval ${pfx}libc_type=bionic
3963     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3964         eval ${pfx}libc_type=solaris
3965         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3966     else
3967         eval ${pfx}libc_type=default
3968         add_${pfx}cppflags -D_DEFAULT_SOURCE
3969     fi
3970 }
3971
3972 probe_libc
3973 test -n "$libc_type" && enable libc_$libc_type
3974 probe_libc host_
3975 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3976
3977 case $libc_type in
3978     bionic)
3979         add_compat strtod.o strtod=avpriv_strtod
3980         ;;
3981 esac
3982
3983 # hacks for compiler/libc/os combinations
3984
3985 if enabled_all tms470 libc_glibc; then
3986     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3987     add_cppflags -D__USER_LABEL_PREFIX__=
3988     add_cppflags -D__builtin_memset=memset
3989     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3990     add_cflags   -pds=48    # incompatible redefinition of macro
3991 fi
3992
3993 if enabled_all ccc libc_glibc; then
3994     add_ldflags -Wl,-z,now  # calls to libots crash without this
3995 fi
3996
3997 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3998     add_cppflags '-I\$(SRC_PATH)/compat/float'
3999
4000 esc(){
4001     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4002 }
4003
4004 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
4005
4006 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4007
4008 set_default $PATHS_LIST
4009 set_default nm
4010
4011 # we need to build at least one lib type
4012 if ! enabled_any static shared; then
4013     cat <<EOF
4014 At least one library type must be built.
4015 Specify --enable-static to build the static libraries or --enable-shared to
4016 build the shared libraries as well. To only build the shared libraries specify
4017 --disable-static in addition to --enable-shared.
4018 EOF
4019     exit 1;
4020 fi
4021
4022 die_license_disabled() {
4023     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4024 }
4025
4026 die_license_disabled gpl libcdio
4027 die_license_disabled gpl libx264
4028 die_license_disabled gpl libx265
4029 die_license_disabled gpl libxavs
4030 die_license_disabled gpl libxvid
4031 die_license_disabled gpl x11grab
4032
4033 die_license_disabled nonfree cuda
4034 die_license_disabled nonfree libfaac
4035 die_license_disabled nonfree libfdk_aac
4036 die_license_disabled nonfree libnpp
4037 die_license_disabled nonfree nvenc
4038 die_license_disabled nonfree openssl
4039
4040 die_license_disabled version3 libopencore_amrnb
4041 die_license_disabled version3 libopencore_amrwb
4042 die_license_disabled version3 libvo_aacenc
4043 die_license_disabled version3 libvo_amrwbenc
4044
4045 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4046
4047 disabled optimizations || check_cflags -fomit-frame-pointer
4048
4049 enable_weak_pic() {
4050     disabled pic && return
4051     enable pic
4052     add_cppflags -DPIC
4053     case "$target_os" in
4054     mingw*|cygwin*)
4055         ;;
4056     *)
4057         add_cflags -fPIC
4058         ;;
4059     esac
4060     add_asflags  -fPIC
4061 }
4062
4063 enabled pic && enable_weak_pic
4064
4065 check_cc <<EOF || die "Symbol mangling check failed."
4066 int ff_extern;
4067 EOF
4068 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4069 extern_prefix=${sym%%ff_extern*}
4070
4071 check_cc <<EOF && enable_weak inline_asm
4072 void foo(void) { __asm__ volatile ("" ::); }
4073 EOF
4074
4075 _restrict=
4076 for restrict_keyword in restrict __restrict__ __restrict; do
4077     check_cc <<EOF && _restrict=$restrict_keyword && break
4078 void foo(char * $restrict_keyword p);
4079 EOF
4080 done
4081
4082 check_cc <<EOF && enable pragma_deprecated
4083 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4084 EOF
4085
4086 check_cc <<EOF && enable attribute_packed
4087 struct { int x; } __attribute__((packed)) x;
4088 EOF
4089
4090 check_cc <<EOF && enable attribute_may_alias
4091 union { int x; } __attribute__((may_alias)) x;
4092 EOF
4093
4094 check_cc <<EOF || die "endian test failed"
4095 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4096 EOF
4097 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4098
4099 check_gas() {
4100     log "check_gas using '$as' as AS"
4101     # :vararg is used on aarch64, arm and ppc altivec
4102     check_as <<EOF || return 1
4103 .macro m n, y:vararg=0
4104 \n: .int \y
4105 .endm
4106 m x
4107 EOF
4108     # .altmacro is only used in arm asm
4109     ! enabled arm || check_as <<EOF || return 1
4110 .altmacro
4111 EOF
4112     enable gnu_as
4113     return 0
4114 }
4115
4116 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4117     nogas=:
4118     enabled_any arm aarch64 && nogas=die
4119     enabled_all ppc altivec && nogas=warn
4120     as_noop=-v
4121
4122     case $as_type in
4123         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4124         gcc)  gaspp_as_type=gas ;;
4125         *)    gaspp_as_type=$as_type ;;
4126     esac
4127
4128     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4129
4130     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4131         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4132
4133     if ! check_gas ; then
4134         as=${gas:=$as}
4135         check_gas || \
4136             $nogas "GNU assembler not found, install/update gas-preprocessor"
4137     fi
4138
4139     check_as <<EOF && enable as_func
4140 .func test
4141 .endfunc
4142 EOF
4143 fi
4144
4145 check_inline_asm inline_asm_labels '"1:\n"'
4146
4147 if enabled aarch64; then
4148     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4149     # internal assembler in clang 3.3 does not support this instruction
4150     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4151     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4152
4153     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4154
4155 elif enabled alpha; then
4156
4157     check_cflags -mieee
4158
4159 elif enabled arm; then
4160
4161     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4162     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4163     enabled thumb && check_cflags -mthumb || check_cflags -marm
4164
4165     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4166         enable vfp_args
4167     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4168         enable vfp_args
4169     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4170         case "${cross_prefix:-$cc}" in
4171             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4172             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4173 __asm__ (".eabi_attribute 28, 1");
4174 int main(void) { return 0; }
4175 EOF
4176         esac
4177         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4178     fi
4179
4180     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4181     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4182     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4183     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4184     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4185     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4186
4187     [ $target_os = linux ] || [ $target_os = android ] ||
4188         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4189             $ARCH_EXT_LIST_ARM
4190
4191     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4192
4193     check_as <<EOF && enable as_dn_directive
4194 ra .dn d0.i16
4195 .unreq ra
4196 EOF
4197
4198     # llvm's integrated assembler supports .object_arch from llvm 3.5
4199     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4200 .object_arch armv4
4201 EOF
4202
4203     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4204
4205 elif enabled mips; then
4206
4207     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4208
4209     # make sure that only an instruction set is enabled
4210     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4211
4212     if enabled mips64; then
4213         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4214             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4215                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4216     else
4217         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4218             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4219                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4220     fi
4221
4222 elif enabled parisc; then
4223
4224     if enabled gcc; then
4225         case $($cc -dumpversion) in
4226             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4227         esac
4228     fi
4229
4230 elif enabled ppc; then
4231
4232     enable local_aligned_8 local_aligned_16
4233
4234     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4235     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4236     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4237     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4238
4239     # AltiVec flags: The FSF version of GCC differs from the Apple version
4240     if enabled altivec; then
4241         check_cflags -maltivec -mabi=altivec &&
4242         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4243         check_cflags -faltivec
4244
4245         # check if our compiler supports Motorola AltiVec C API
4246         check_cc <<EOF || disable altivec
4247 $inc_altivec_h
4248 int main(void) {
4249     vector signed int v1 = (vector signed int) { 0 };
4250     vector signed int v2 = (vector signed int) { 1 };
4251     v1 = vec_add(v1, v2);
4252     return 0;
4253 }
4254 EOF
4255
4256         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4257     fi
4258
4259     if enabled vsx; then
4260         check_cflags -mvsx &&
4261         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4262     fi
4263
4264     if enabled power8; then
4265         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4266     fi
4267
4268 elif enabled x86; then
4269
4270     check_builtin rdtsc    intrin.h   "__rdtsc()"
4271     check_builtin mm_empty mmintrin.h "_mm_empty()"
4272
4273     enable local_aligned_8 local_aligned_16
4274
4275     # check whether EBP is available on x86
4276     # As 'i' is stored on the stack, this program will crash
4277     # if the base pointer is used to access it because the
4278     # base pointer is cleared in the inline assembly code.
4279     check_exec_crash <<EOF && enable ebp_available
4280 volatile int i=0;
4281 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4282 return i;
4283 EOF
4284
4285     # check whether EBX is available on x86
4286     check_inline_asm ebx_available '""::"b"(0)' &&
4287         check_inline_asm ebx_available '"":::"%ebx"'
4288
4289     # check whether xmm clobbers are supported
4290     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4291
4292     # check whether binutils is new enough to compile SSSE3/MMXEXT
4293     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4294     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4295
4296     if ! disabled_any asm mmx yasm; then
4297         if check_cmd $yasmexe --version; then
4298             enabled x86_64 && yasm_extra="-m amd64"
4299             yasm_debug="-g dwarf2"
4300         elif check_cmd nasm -v; then
4301             yasmexe=nasm
4302             yasm_debug="-g -F dwarf"
4303             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4304         fi
4305
4306         YASMFLAGS="-f $objformat $yasm_extra"
4307         enabled pic               && append YASMFLAGS "-DPIC"
4308         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4309         case "$objformat" in
4310             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4311         esac
4312
4313         check_yasm "movbe ecx, [5]" && enable yasm ||
4314             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4315         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4316         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4317         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4318         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4319         check_yasm "CPU amdnop" || disable cpunop
4320     fi
4321
4322     case "$cpu" in
4323         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4324             disable fast_clz
4325         ;;
4326     esac
4327
4328 fi
4329
4330 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4331
4332 check_ldflags -Wl,--as-needed
4333
4334 if check_func dlopen; then
4335     ldl=
4336 elif check_func dlopen -ldl; then
4337     ldl=-ldl
4338 fi
4339
4340 if ! disabled network; then
4341     check_func getaddrinfo $network_extralibs
4342     check_func inet_aton $network_extralibs
4343
4344     check_type netdb.h "struct addrinfo"
4345     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4346     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4347     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4348     check_type poll.h "struct pollfd"
4349     check_type netinet/sctp.h "struct sctp_event_subscribe"
4350     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4351     check_type netinet/in.h "struct sockaddr_in6"
4352     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4353     check_type "sys/types.h sys/socket.h" socklen_t
4354
4355     # Prefer arpa/inet.h over winsock2
4356     if check_header arpa/inet.h ; then
4357         check_func closesocket
4358     elif check_header winsock2.h ; then
4359         check_func_headers winsock2.h closesocket -lws2 &&
4360             network_extralibs="-lws2" ||
4361         { check_func_headers winsock2.h closesocket -lws2_32 &&
4362             network_extralibs="-lws2_32"; } || disable winsock2_h network
4363         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4364
4365         check_type ws2tcpip.h socklen_t
4366         check_type ws2tcpip.h "struct addrinfo"
4367         check_type ws2tcpip.h "struct group_source_req"
4368         check_type ws2tcpip.h "struct ip_mreq_source"
4369         check_type ws2tcpip.h "struct ipv6_mreq"
4370         check_type winsock2.h "struct pollfd"
4371         check_struct winsock2.h "struct sockaddr" sa_len
4372         check_type ws2tcpip.h "struct sockaddr_in6"
4373         check_type ws2tcpip.h "struct sockaddr_storage"
4374     else
4375         disable network
4376     fi
4377 fi
4378
4379 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4380 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4381 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4382 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4383
4384 case "$custom_allocator" in
4385     jemalloc)
4386         # jemalloc by default does not use a prefix
4387         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4388     ;;
4389     tcmalloc)
4390         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
4391         malloc_prefix=tc_
4392     ;;
4393 esac
4394
4395 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4396 check_func  ${malloc_prefix}memalign            && enable memalign
4397 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4398
4399 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4400     check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4401
4402 check_func  fcntl
4403 check_func  fork
4404 check_func  gethrtime
4405 check_func  getopt
4406 check_func  getrusage
4407 check_func  gettimeofday
4408 check_func  gmtime_r
4409 check_func  isatty
4410 check_func  localtime_r
4411 check_func  mach_absolute_time
4412 check_func  mkstemp
4413 check_func  mmap
4414 check_func  mprotect
4415 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4416 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4417 check_func  sched_getaffinity
4418 check_func  setrlimit
4419 check_func  strerror_r
4420 check_func  sysconf
4421 check_func  sysctl
4422 check_func  usleep
4423
4424 check_func_headers io.h setmode
4425 check_func_headers stdlib.h getenv
4426
4427 check_func_headers windows.h CoTaskMemFree -lole32
4428 check_func_headers windows.h GetProcessAffinityMask
4429 check_func_headers windows.h GetProcessTimes
4430 check_func_headers windows.h GetSystemTimeAsFileTime
4431 check_func_headers windows.h LoadLibrary
4432 check_func_headers windows.h MapViewOfFile
4433 check_func_headers windows.h SetConsoleTextAttribute
4434 check_func_headers windows.h Sleep
4435 check_func_headers windows.h VirtualAlloc
4436 check_struct windows.h "CONDITION_VARIABLE" Ptr
4437
4438 check_header direct.h
4439 check_header dlfcn.h
4440 check_header d3d11.h
4441 check_header dxva.h
4442 check_header dxva2api.h
4443 check_header io.h
4444 check_header mach/mach_time.h
4445 check_header malloc.h
4446 check_header poll.h
4447 check_header sys/mman.h
4448 check_header sys/param.h
4449 check_header sys/resource.h
4450 check_header sys/select.h
4451 check_header sys/time.h
4452 check_header sys/un.h
4453 check_header unistd.h
4454 check_header valgrind/valgrind.h
4455 check_header vdpau/vdpau.h
4456 check_header vdpau/vdpau_x11.h
4457 check_header VideoDecodeAcceleration/VDADecoder.h
4458 check_header windows.h
4459 check_header X11/extensions/XvMClib.h
4460
4461 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4462 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4463 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4464
4465 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4466
4467 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4468 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4469 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4470
4471 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4472 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4473
4474 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4475
4476 if ! disabled w32threads && ! enabled pthreads; then
4477     check_func_headers "windows.h process.h" _beginthreadex &&
4478         enable w32threads || disable w32threads
4479 fi
4480
4481 # check for some common methods of building with pthread support
4482 # do this before the optional library checks as some of them require pthreads
4483 if ! disabled pthreads && ! enabled w32threads; then
4484     enable pthreads
4485     if check_func pthread_join -pthread; then
4486         add_cflags -pthread
4487         add_extralibs -pthread
4488     elif check_func pthread_join -pthreads; then
4489         add_cflags -pthreads
4490         add_extralibs -pthreads
4491     elif check_func pthread_join -lpthreadGC2; then
4492         add_extralibs -lpthreadGC2
4493     elif check_lib pthread.h pthread_join -lpthread; then
4494         :
4495     elif ! check_func pthread_join; then
4496         disable pthreads
4497     fi
4498 fi
4499
4500 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4501 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4502
4503 check_lib math.h sin -lm && LIBM="-lm"
4504 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4505
4506 atan2f_args=2
4507 ldexpf_args=2
4508 powf_args=2
4509
4510 for func in $MATH_FUNCS; do
4511     eval check_mathfunc $func \${${func}_args:-1}
4512 done
4513
4514 # these are off by default, so fail if requested and not available
4515 enabled avisynth          && { check_lib2 "avisynth/avisynth_c.h windows.h" LoadLibrary ||
4516                                check_lib2 "avxsynth/avxsynth_c.h dlfcn.h" dlopen -ldl   ||
4517                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4518 enabled cuda              && check_lib cuda.h cuInit -lcuda
4519 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4520 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4521 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4522 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4523 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4524 enabled libfdk_aac        && require_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4525 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4526 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4527 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4528                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4529                                done || die "ERROR: libgsm not found"; }
4530 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4531 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4532 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
4533 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4534 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4535 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4536 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4537 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4538 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
4539 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4540                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4541 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4542 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4543 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4544 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4545 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
4546 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4547 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4548 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4549 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4550 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4551 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4552 enabled libvpx            && require_pkg_config "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version && {
4553     enabled libvpx_vp8_decoder && {
4554         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
4555             disable libvpx_vp8_decoder;
4556     }
4557     enabled libvpx_vp8_encoder && {
4558         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
4559             disable libvpx_vp8_encoder;
4560     }
4561     enabled libvpx_vp9_decoder && {
4562         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
4563             disable libvpx_vp9_decoder;
4564     }
4565     enabled libvpx_vp9_encoder && {
4566         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
4567             disable libvpx_vp9_encoder;
4568     }
4569     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
4570         die "libvpx enabled but no supported decoders found"
4571     fi
4572 }
4573 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4574 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4575 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4576                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4577                                die "ERROR: libx264 version must be >= 0.118."; } &&
4578                              { check_cpp_condition x264.h "X264_MPEG2" &&
4579                                enable libx262; }
4580 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
4581                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
4582                                die "ERROR: libx265 version must be >= 57."; }
4583 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4584 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4585 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4586                                 { ! enabled cross_compile && {
4587                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
4588                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
4589                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
4590                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
4591                                die "ERROR: mmal not found"; }
4592 enabled openssl           && { check_pkg_config openssl openssl/ssl.h SSL_library_init && {
4593                                add_cflags $openssl_cflags && add_extralibs $openssl_libs; }||
4594                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4595                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4596                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4597                                die "ERROR: openssl not found"; }
4598
4599 if enabled gnutls; then
4600     { check_lib2 gmp.h mpz_export -lgmp && enable gmp; } ||
4601     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4602 fi
4603
4604 # libdc1394 check
4605 if enabled libdc1394; then
4606     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
4607         enable libdc1394_2; } ||
4608     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4609         enable libdc1394_1; } ||
4610     die "ERROR: No version of libdc1394 found "
4611 fi
4612
4613 if enabled nvenc; then
4614     enabled cuda || check_header cuda.h || die "ERROR: cuda.h not found.";
4615     check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found.";
4616     check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 5" ||
4617         die "ERROR: NVENC API version 4 or older is not supported";
4618 fi
4619
4620 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4621     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4622     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4623     enable sdl
4624 fi
4625
4626 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4627 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4628
4629 check_header linux/fb.h
4630 check_header linux/videodev2.h
4631 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4632
4633 check_header AVFoundation/AVFoundation.h &&
4634     check_objcflags -fobjc-arc &&
4635     add_extralibs -framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia ||
4636     disable AVFoundation_AVFoundation_h
4637
4638 check_header sys/videoio.h
4639
4640 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4641 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4642 # w32api 3.12 had it defined wrong
4643 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4644
4645 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4646 { check_header dev/bktr/ioctl_meteor.h &&
4647   check_header dev/bktr/ioctl_bt848.h; } ||
4648 { check_header machine/ioctl_meteor.h &&
4649   check_header machine/ioctl_bt848.h; } ||
4650 { check_header dev/video/meteor/ioctl_meteor.h &&
4651   check_header dev/video/bktr/ioctl_bt848.h; } ||
4652 check_header dev/ic/bt8xx.h
4653
4654 check_header sndio.h
4655 check_header sys/soundcard.h
4656 check_header soundcard.h
4657
4658 enabled_any alsa_indev alsa_outdev &&
4659     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4660
4661 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4662     check_func jack_port_get_latency_range -ljack
4663
4664 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4665
4666 if enabled libcdio; then
4667     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4668     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4669     die "ERROR: No usable libcdio/cdparanoia found"
4670 fi
4671
4672 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4673
4674 if enabled libxcb || enabled x11grab && ! disabled libxcb; then
4675     check_pkg_config xcb-shape xcb/shape.h xcb_shape_rectangles || {
4676         enabled libxcb && die "ERROR: libxcb not found";
4677     } && disable x11grab && enable libxcb
4678
4679     disabled libxcb_shm ||
4680         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
4681             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
4682         } && check_header sys/shm.h && enable libxcb_shm
4683
4684     disabled libxcb_xfixes ||
4685         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
4686             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
4687         } && enable libxcb_xfixes
4688
4689     add_cflags "$xcb_event_cflags $xcb_shm_cflags $xcb_xfixes_cflags"
4690     add_extralibs "$xcb_event_libs $xcb_shm_libs $xcb_xfixes_libs"
4691 fi
4692
4693 if enabled x11grab; then
4694     enabled xlib || die "ERROR: Xlib not found"
4695     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
4696     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
4697 fi
4698
4699 enabled vaapi &&
4700     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
4701     disable vaapi
4702
4703 if enabled vaapi ; then
4704     enabled xlib &&
4705     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
4706     enable vaapi_x11
4707
4708     check_lib2 "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
4709     enable vaapi_drm
4710 fi
4711
4712 enabled vdpau &&
4713     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4714     disable vdpau
4715
4716 enabled vdpau && enabled xlib &&
4717     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4718     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4719     enable vdpau_x11
4720
4721 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4722
4723 # add some useful compiler flags if supported
4724 check_cflags -Wdeclaration-after-statement
4725 check_cflags -Wall
4726 check_cflags -Wdisabled-optimization
4727 check_cflags -Wpointer-arith
4728 check_cflags -Wredundant-decls
4729 check_cflags -Wwrite-strings
4730 check_cflags -Wtype-limits
4731 check_cflags -Wundef
4732 check_cflags -Wmissing-prototypes
4733 check_cflags -Wstrict-prototypes
4734 enabled extra_warnings && check_cflags -Winline
4735 enabled extra_warnings && check_cflags -Wcast-qual
4736
4737 check_disable_warning(){
4738     warning_flag=-W${1#-Wno-}
4739     test_cflags $warning_flag && add_cflags $1
4740 }
4741
4742 check_disable_warning -Wno-parentheses
4743 check_disable_warning -Wno-switch
4744 check_disable_warning -Wno-format-zero-length
4745 check_disable_warning -Wno-pointer-sign
4746
4747 # add some linker flags
4748 check_ldflags -Wl,--warn-common
4749 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4750 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
4751 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4752
4753 # add some strip flags
4754 # -wN '..@*' is more selective than -x, but not available everywhere.
4755 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4756
4757 enabled neon_clobber_test &&
4758     check_ldflags -Wl,--wrap,avcodec_open2              \
4759                   -Wl,--wrap,avcodec_decode_audio4      \
4760                   -Wl,--wrap,avcodec_decode_video2      \
4761                   -Wl,--wrap,avcodec_decode_subtitle2   \
4762                   -Wl,--wrap,avcodec_encode_audio2      \
4763                   -Wl,--wrap,avcodec_encode_video2      \
4764                   -Wl,--wrap,avcodec_encode_subtitle    \
4765                   -Wl,--wrap,avresample_convert ||
4766     disable neon_clobber_test
4767
4768 enabled xmm_clobber_test &&
4769     check_ldflags -Wl,--wrap,avcodec_open2              \
4770                   -Wl,--wrap,avcodec_decode_audio4      \
4771                   -Wl,--wrap,avcodec_decode_video2      \
4772                   -Wl,--wrap,avcodec_decode_subtitle2   \
4773                   -Wl,--wrap,avcodec_encode_audio2      \
4774                   -Wl,--wrap,avcodec_encode_video2      \
4775                   -Wl,--wrap,avcodec_encode_subtitle    \
4776                   -Wl,--wrap,avresample_convert         \
4777                   -Wl,--wrap,sws_scale ||
4778     disable xmm_clobber_test
4779
4780 echo "X { local: *; };" > $TMPV
4781 if test_ldflags -Wl,--version-script,$TMPV; then
4782     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4783 elif test_ldflags -Wl,-M,$TMPV; then
4784     append SHFLAGS '-Wl,-M,\$(SUBDIR)lib\$(NAME).ver-sol2'
4785 fi
4786
4787 check_cc <<EOF && enable symver_asm_label
4788 void ff_foo(void) __asm__ ("av_foo@VERSION");
4789 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4790 EOF
4791     check_cc <<EOF && enable symver_gnu_asm
4792 __asm__(".symver ff_foo,av_foo@VERSION");
4793 void ff_foo(void) {}
4794 EOF
4795
4796 if [ -z "$optflags" ]; then
4797     if enabled small; then
4798         optflags=$cflags_size
4799     elif enabled optimizations; then
4800         optflags=$cflags_speed
4801     else
4802         optflags=$cflags_noopt
4803     fi
4804 fi
4805
4806 check_optflags(){