lavfi: add an NVIDIA NPP-based scaling filter
[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_x11
1640     vdpau_x11
1641     xlib
1642 "
1643
1644 # options emitted with CONFIG_ prefix but not available on the command line
1645 CONFIG_EXTRA="
1646     aandcttables
1647     ac3dsp
1648     audio_frame_queue
1649     audiodsp
1650     blockdsp
1651     bswapdsp
1652     cabac
1653     dirac_parse
1654     dvprofile
1655     faandct
1656     faanidct
1657     fdctdsp
1658     flacdsp
1659     fmtconvert
1660     g722dsp
1661     gcrypt
1662     gmp
1663     golomb
1664     gplv3
1665     h263dsp
1666     h264chroma
1667     h264dsp
1668     h264pred
1669     h264qpel
1670     hpeldsp
1671     huffman
1672     huffyuvdsp
1673     huffyuvencdsp
1674     idctdsp
1675     iirfilter
1676     imdct15
1677     intrax8
1678     iso_media
1679     ividsp
1680     jpegtables
1681     libx262
1682     lgplv3
1683     lpc
1684     lzf
1685     me_cmp
1686     mpeg_er
1687     mpegaudio
1688     mpegaudiodsp
1689     mpegvideo
1690     mpegvideoenc
1691     mss34dsp
1692     pixblockdsp
1693     qpeldsp
1694     qsv
1695     qsvdec
1696     qsvenc
1697     rangecoder
1698     riffdec
1699     riffenc
1700     rtpdec
1701     rtpenc_chain
1702     rv34dsp
1703     sinewin
1704     snappy
1705     srtp
1706     startcode
1707     texturedsp
1708     texturedspenc
1709     tpeldsp
1710     vc1dsp
1711     videodsp
1712     vp3dsp
1713     vp56dsp
1714     vp8dsp
1715     wma_freqs
1716     wmv2dsp
1717 "
1718
1719 CMDLINE_SELECT="
1720     $ARCH_EXT_LIST
1721     $CONFIG_LIST
1722     $HAVE_LIST_CMDLINE
1723     $THREADS_LIST
1724     asm
1725     cross_compile
1726     debug
1727     extra_warnings
1728     logging
1729     lto
1730     optimizations
1731     rpath
1732 "
1733
1734 PATHS_LIST="
1735     bindir
1736     datadir
1737     docdir
1738     incdir
1739     libdir
1740     mandir
1741     prefix
1742     shlibdir
1743 "
1744
1745 CMDLINE_SET="
1746     $PATHS_LIST
1747     ar
1748     arch
1749     as
1750     build_suffix
1751     cc
1752     objcc
1753     cpu
1754     cross_prefix
1755     custom_allocator
1756     dep_cc
1757     env
1758     extra_version
1759     host_cc
1760     host_cflags
1761     host_ld
1762     host_ldflags
1763     host_libs
1764     host_os
1765     ld
1766     logfile
1767     malloc_prefix
1768     nm
1769     optflags
1770     pkg_config
1771     pkg_config_flags
1772     random_seed
1773     samples
1774     sysinclude
1775     sysroot
1776     target_exec
1777     target_os
1778     target_path
1779     target_samples
1780     toolchain
1781 "
1782
1783 CMDLINE_APPEND="
1784     extra_cflags
1785     extra_objcflags
1786     host_cppflags
1787 "
1788
1789 # code dependency declarations
1790
1791 # architecture extensions
1792
1793 armv5te_deps="arm"
1794 armv6_deps="arm"
1795 armv6t2_deps="arm"
1796 armv8_deps="aarch64"
1797 neon_deps_any="aarch64 arm"
1798 intrinsics_neon_deps="neon"
1799 vfp_deps_any="aarch64 arm"
1800 vfpv3_deps="vfp"
1801
1802 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1803
1804 altivec_deps="ppc"
1805 ppc4xx_deps="ppc"
1806 vsx_deps="altivec"
1807 power8_deps="vsx"
1808
1809 cpunop_deps="i686"
1810 x86_64_select="i686"
1811 x86_64_suggest="fast_cmov"
1812
1813 amd3dnow_deps="mmx"
1814 amd3dnowext_deps="amd3dnow"
1815 i686_deps="x86"
1816 mmx_deps="x86"
1817 mmxext_deps="mmx"
1818 sse_deps="mmxext"
1819 sse2_deps="sse"
1820 sse3_deps="sse2"
1821 ssse3_deps="sse3"
1822 sse4_deps="ssse3"
1823 sse42_deps="sse4"
1824 avx_deps="sse42"
1825 xop_deps="avx"
1826 fma3_deps="avx"
1827 fma4_deps="avx"
1828 avx2_deps="avx"
1829
1830 mmx_external_deps="yasm"
1831 mmx_inline_deps="inline_asm"
1832 mmx_suggest="mmx_external mmx_inline"
1833
1834 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1835     eval dep=\$${ext}_deps
1836     eval ${ext}_external_deps='"${dep}_external"'
1837     eval ${ext}_inline_deps='"${dep}_inline"'
1838     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1839 done
1840
1841 aligned_stack_if_any="aarch64 ppc x86"
1842 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1843 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1844 fast_unaligned_if_any="aarch64 ppc x86"
1845 simd_align_16_if_any="altivec neon sse"
1846
1847 # system capabilities
1848 symver_if_any="symver_asm_label symver_gnu_asm"
1849 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1850
1851 # threading support
1852 atomics_gcc_if="sync_val_compare_and_swap"
1853 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1854 atomics_win32_if="MemoryBarrier"
1855 atomics_native_if_any="$ATOMICS_LIST"
1856 w32threads_deps="atomics_native"
1857 threads_if_any="$THREADS_LIST"
1858
1859 # subsystems
1860 dct_select="rdft"
1861 dirac_parse_select="golomb"
1862 error_resilience_select="me_cmp"
1863 faandct_deps="faan fdctdsp"
1864 faanidct_deps="faan idctdsp"
1865 h264dsp_select="startcode"
1866 mdct_select="fft"
1867 rdft_select="fft"
1868 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1869 mpeg_er_select="error_resilience"
1870 mpegaudio_select="mpegaudiodsp"
1871 mpegaudiodsp_select="dct"
1872 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1873 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1874 nvenc_deps_any="dlopen LoadLibrary"
1875 nvenc_extralibs='$ldl'
1876 qsvdec_select="qsv"
1877 qsvenc_select="qsv"
1878 vc1dsp_select="h264chroma qpeldsp startcode"
1879
1880 # decoders / encoders
1881 aac_decoder_select="imdct15 mdct sinewin"
1882 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1883 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1884 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1885 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1886 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1887 adpcm_g722_decoder_select="g722dsp"
1888 adpcm_g722_encoder_select="g722dsp"
1889 aic_decoder_select="golomb idctdsp"
1890 alac_encoder_select="lpc"
1891 als_decoder_select="bswapdsp"
1892 amrnb_decoder_select="lsp"
1893 amrwb_decoder_select="lsp"
1894 amv_decoder_select="sp5x_decoder"
1895 ape_decoder_select="bswapdsp"
1896 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1897 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1898 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1899 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1900 atrac1_decoder_select="mdct sinewin"
1901 atrac3_decoder_select="mdct"
1902 atrac3p_decoder_select="mdct sinewin"
1903 bink_decoder_select="blockdsp hpeldsp"
1904 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1905 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1906 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1907 cllc_decoder_select="bswapdsp"
1908 comfortnoise_encoder_select="lpc"
1909 cook_decoder_select="audiodsp mdct sinewin"
1910 cscd_decoder_select="lzo"
1911 cscd_decoder_suggest="zlib"
1912 dca_decoder_select="fmtconvert mdct"
1913 dds_decoder_select="texturedsp"
1914 dnxhd_decoder_select="blockdsp idctdsp"
1915 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1916 dvvideo_decoder_select="dvprofile idctdsp"
1917 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1918 dxa_decoder_deps="zlib"
1919 dxv_decoder_select="lzf texturedsp"
1920 eac3_decoder_select="ac3_decoder"
1921 eac3_encoder_select="ac3_encoder"
1922 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1923 eatgq_decoder_select="aandcttables idctdsp"
1924 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
1925 exr_decoder_deps="zlib"
1926 ffv1_decoder_select="golomb rangecoder"
1927 ffv1_encoder_select="rangecoder"
1928 ffvhuff_decoder_select="huffyuv_decoder"
1929 ffvhuff_encoder_select="huffyuv_encoder"
1930 fic_decoder_select="golomb"
1931 flac_decoder_select="flacdsp golomb"
1932 flac_encoder_select="bswapdsp flacdsp golomb lpc"
1933 flashsv_decoder_deps="zlib"
1934 flashsv_encoder_deps="zlib"
1935 flashsv2_decoder_deps="zlib"
1936 flv_decoder_select="h263_decoder"
1937 flv_encoder_select="h263_encoder"
1938 fourxm_decoder_select="blockdsp bswapdsp"
1939 fraps_decoder_select="bswapdsp huffman"
1940 g2m_decoder_deps="zlib"
1941 g2m_decoder_select="blockdsp idctdsp jpegtables"
1942 h261_decoder_select="mpeg_er mpegvideo"
1943 h261_encoder_select="aandcttables mpegvideoenc"
1944 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1945 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1946 h263i_decoder_select="h263_decoder"
1947 h263p_encoder_select="h263_encoder"
1948 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
1949 h264_decoder_suggest="error_resilience"
1950 h264_nvenc_encoder_deps="nvenc"
1951 h264_qsv_decoder_deps="libmfx"
1952 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
1953 h264_qsv_encoder_deps="libmfx"
1954 h264_qsv_encoder_select="qsvenc"
1955 hap_decoder_select="snappy texturedsp"
1956 hap_encoder_deps="libsnappy"
1957 hap_encoder_select="texturedspenc"
1958 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1959 hevc_nvenc_encoder_deps="nvenc"
1960 hevc_qsv_encoder_deps="libmfx"
1961 hevc_qsv_decoder_deps="libmfx"
1962 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
1963 hevc_qsv_encoder_select="qsvenc"
1964 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1965 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1966 iac_decoder_select="imc_decoder"
1967 imc_decoder_select="bswapdsp fft mdct sinewin"
1968 indeo3_decoder_select="hpeldsp"
1969 indeo4_decoder_select="ividsp"
1970 indeo5_decoder_select="ividsp"
1971 interplay_video_decoder_select="hpeldsp"
1972 jpegls_decoder_select="golomb mjpeg_decoder"
1973 jpegls_encoder_select="golomb"
1974 jv_decoder_select="blockdsp"
1975 lagarith_decoder_select="huffyuvdsp"
1976 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
1977 loco_decoder_select="golomb"
1978 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1979 metasound_decoder_select="lsp mdct sinewin"
1980 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1981 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
1982 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
1983 mjpegb_decoder_select="mjpeg_decoder"
1984 mlp_decoder_select="mlp_parser"
1985 motionpixels_decoder_select="bswapdsp"
1986 mp1_decoder_select="mpegaudio"
1987 mp1float_decoder_select="mpegaudio"
1988 mp2_decoder_select="mpegaudio"
1989 mp2float_decoder_select="mpegaudio"
1990 mp3_decoder_select="mpegaudio"
1991 mp3adu_decoder_select="mpegaudio"
1992 mp3adufloat_decoder_select="mpegaudio"
1993 mp3float_decoder_select="mpegaudio"
1994 mp3on4_decoder_select="mpegaudio"
1995 mp3on4float_decoder_select="mpegaudio"
1996 mpc7_decoder_select="bswapdsp mpegaudiodsp"
1997 mpc8_decoder_select="mpegaudiodsp"
1998 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1999 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2000 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2001 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2002 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2003 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2004 mpeg2_qsv_decoder_deps="libmfx"
2005 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2006 mpeg2_qsv_encoder_deps="libmfx"
2007 mpeg2_qsv_encoder_select="qsvenc"
2008 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2009 mpeg4_encoder_select="h263_encoder"
2010 msa1_decoder_select="mss34dsp"
2011 msmpeg4v1_decoder_select="h263_decoder"
2012 msmpeg4v2_decoder_select="h263_decoder"
2013 msmpeg4v2_encoder_select="h263_encoder"
2014 msmpeg4v3_decoder_select="h263_decoder"
2015 msmpeg4v3_encoder_select="h263_encoder"
2016 mss2_decoder_select="error_resilience mpeg_er mpegvideo vc1_decoder"
2017 mts2_decoder_select="mss34dsp"
2018 mxpeg_decoder_select="mjpeg_decoder"
2019 nellymoser_decoder_select="mdct sinewin"
2020 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2021 nuv_decoder_select="idctdsp lzo"
2022 nvenc_h264_encoder_deps="nvenc"
2023 nvenc_hevc_encoder_deps="nvenc"
2024 on2avc_decoder_select="mdct"
2025 opus_decoder_deps="avresample"
2026 opus_decoder_select="imdct15"
2027 png_decoder_deps="zlib"
2028 png_encoder_deps="zlib"
2029 png_encoder_select="huffyuvencdsp"
2030 prores_decoder_select="idctdsp"
2031 prores_encoder_select="fdctdsp"
2032 qcelp_decoder_select="lsp"
2033 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2034 ra_144_encoder_select="audio_frame_queue lpc"
2035 ralf_decoder_select="golomb"
2036 rscc_decoder_deps="zlib"
2037 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2038 rv10_encoder_select="h263_encoder"
2039 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2040 rv20_encoder_select="h263_encoder"
2041 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2042 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2043 screenpresso_decoder_deps="zlib"
2044 shorten_decoder_select="golomb"
2045 sipr_decoder_select="lsp"
2046 sp5x_decoder_select="mjpeg_decoder"
2047 svq1_decoder_select="hpeldsp"
2048 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2049 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2050 svq3_decoder_suggest="zlib"
2051 tak_decoder_select="audiodsp"
2052 tdsc_decoder_deps="zlib"
2053 tdsc_decoder_select="mjpeg_decoder"
2054 theora_decoder_select="vp3_decoder"
2055 thp_decoder_select="mjpeg_decoder"
2056 tiff_decoder_suggest="zlib"
2057 tiff_encoder_suggest="zlib"
2058 truehd_decoder_select="mlp_decoder"
2059 truemotion2_decoder_select="bswapdsp"
2060 truespeech_decoder_select="bswapdsp"
2061 tscc_decoder_deps="zlib"
2062 txd_decoder_select="texturedsp"
2063 twinvq_decoder_select="mdct lsp sinewin"
2064 utvideo_decoder_select="bswapdsp"
2065 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2066 vble_decoder_select="huffyuvdsp"
2067 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2068 vc1image_decoder_select="vc1_decoder"
2069 vorbis_decoder_select="mdct"
2070 vorbis_encoder_select="mdct"
2071 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2072 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2073 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2074 vp6a_decoder_select="vp6_decoder"
2075 vp6f_decoder_select="vp6_decoder"
2076 vp7_decoder_select="h264pred videodsp vp8dsp"
2077 vp8_decoder_select="h264pred videodsp vp8dsp"
2078 vp9_decoder_select="videodsp"
2079 webp_decoder_select="vp8_decoder"
2080 wmapro_decoder_select="mdct sinewin wma_freqs"
2081 wmav1_decoder_select="mdct sinewin wma_freqs"
2082 wmav1_encoder_select="mdct sinewin wma_freqs"
2083 wmav2_decoder_select="mdct sinewin wma_freqs"
2084 wmav2_encoder_select="mdct sinewin wma_freqs"
2085 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2086 wmv1_decoder_select="h263_decoder"
2087 wmv1_encoder_select="h263_encoder"
2088 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2089 wmv2_encoder_select="h263_encoder wmv2dsp"
2090 wmv3_decoder_select="vc1_decoder"
2091 wmv3image_decoder_select="wmv3_decoder"
2092 zerocodec_decoder_deps="zlib"
2093 zlib_decoder_deps="zlib"
2094 zlib_encoder_deps="zlib"
2095 zmbv_decoder_deps="zlib"
2096 zmbv_encoder_deps="zlib"
2097
2098 # hardware accelerators
2099 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2100 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2101 vaapi_deps="va_va_h"
2102 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2103 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2104 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2105
2106 h263_vaapi_hwaccel_deps="vaapi"
2107 h263_vaapi_hwaccel_select="h263_decoder"
2108 h264_d3d11va_hwaccel_deps="d3d11va"
2109 h264_d3d11va_hwaccel_select="h264_decoder"
2110 h264_dxva2_hwaccel_deps="dxva2"
2111 h264_dxva2_hwaccel_select="h264_decoder"
2112 h264_mmal_decoder_deps="mmal"
2113 h264_mmal_hwaccel_deps="mmal"
2114 h264_mmal_decoder_select="h264_decoder"
2115 h264_mmal_encoder_deps="mmal"
2116 h264_qsv_hwaccel_deps="libmfx"
2117 h264_vaapi_hwaccel_deps="vaapi"
2118 h264_vaapi_hwaccel_select="h264_decoder"
2119 h264_vda_hwaccel_deps="vda"
2120 h264_vda_hwaccel_select="h264_decoder"
2121 h264_vda_old_hwaccel_deps="vda"
2122 h264_vda_old_hwaccel_select="h264_decoder"
2123 h264_vdpau_hwaccel_deps="vdpau"
2124 h264_vdpau_hwaccel_select="h264_decoder"
2125 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2126 hevc_d3d11va_hwaccel_select="hevc_decoder"
2127 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2128 hevc_dxva2_hwaccel_select="hevc_decoder"
2129 hevc_qsv_hwaccel_deps="libmfx"
2130 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2131 hevc_vdpau_hwaccel_select="hevc_decoder"
2132 mpeg1_vdpau_hwaccel_deps="vdpau"
2133 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2134 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2135 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2136 mpeg2_dxva2_hwaccel_deps="dxva2"
2137 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2138 mpeg2_qsv_hwaccel_deps="libmfx"
2139 mpeg2_vaapi_hwaccel_deps="vaapi"
2140 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2141 mpeg2_vdpau_hwaccel_deps="vdpau"
2142 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2143 mpeg4_vaapi_hwaccel_deps="vaapi"
2144 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2145 mpeg4_vdpau_hwaccel_deps="vdpau"
2146 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2147 vc1_d3d11va_hwaccel_deps="d3d11va"
2148 vc1_d3d11va_hwaccel_select="vc1_decoder"
2149 vc1_dxva2_hwaccel_deps="dxva2"
2150 vc1_dxva2_hwaccel_select="vc1_decoder"
2151 vc1_vaapi_hwaccel_deps="vaapi"
2152 vc1_vaapi_hwaccel_select="vc1_decoder"
2153 vc1_vdpau_hwaccel_deps="vdpau"
2154 vc1_vdpau_hwaccel_select="vc1_decoder"
2155 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2156 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2157 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2158 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2159
2160 # parsers
2161 h264_parser_select="h264_decoder"
2162 hevc_parser_select="golomb"
2163 mpegvideo_parser_select="mpegvideo"
2164 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2165 vc1_parser_select="vc1dsp"
2166
2167 # bitstream_filters
2168 mjpeg2jpeg_bsf_select="jpegtables"
2169
2170 # external libraries
2171 libdcadec_decoder_deps="libdcadec"
2172 libfaac_encoder_deps="libfaac"
2173 libfaac_encoder_select="audio_frame_queue"
2174 libfdk_aac_decoder_deps="libfdk_aac"
2175 libfdk_aac_encoder_deps="libfdk_aac"
2176 libfdk_aac_encoder_select="audio_frame_queue"
2177 libgsm_decoder_deps="libgsm"
2178 libgsm_encoder_deps="libgsm"
2179 libgsm_ms_decoder_deps="libgsm"
2180 libgsm_ms_encoder_deps="libgsm"
2181 libilbc_decoder_deps="libilbc"
2182 libilbc_encoder_deps="libilbc"
2183 libkvazaar_encoder_deps="libkvazaar"
2184 libmp3lame_encoder_deps="libmp3lame"
2185 libmp3lame_encoder_select="audio_frame_queue"
2186 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2187 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2188 libopencore_amrnb_encoder_select="audio_frame_queue"
2189 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2190 libopenh264_encoder_deps="libopenh264"
2191 libopenjpeg_decoder_deps="libopenjpeg"
2192 libopenjpeg_encoder_deps="libopenjpeg"
2193 libopus_decoder_deps="libopus"
2194 libopus_encoder_deps="libopus"
2195 libopus_encoder_select="audio_frame_queue"
2196 libschroedinger_decoder_deps="libschroedinger"
2197 libschroedinger_encoder_deps="libschroedinger"
2198 libspeex_decoder_deps="libspeex"
2199 libspeex_encoder_deps="libspeex"
2200 libspeex_encoder_select="audio_frame_queue"
2201 libtheora_encoder_deps="libtheora"
2202 libtwolame_encoder_deps="libtwolame"
2203 libvo_aacenc_encoder_deps="libvo_aacenc"
2204 libvo_aacenc_encoder_select="audio_frame_queue"
2205 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2206 libvorbis_encoder_deps="libvorbis"
2207 libvorbis_encoder_select="audio_frame_queue"
2208 libvpx_vp8_decoder_deps="libvpx"
2209 libvpx_vp8_encoder_deps="libvpx"
2210 libvpx_vp9_decoder_deps="libvpx"
2211 libvpx_vp9_encoder_deps="libvpx"
2212 libwavpack_encoder_deps="libwavpack"
2213 libwebp_encoder_deps="libwebp"
2214 libx262_encoder_deps="libx262"
2215 libx264_encoder_deps="libx264"
2216 libx265_encoder_deps="libx265"
2217 libxavs_encoder_deps="libxavs"
2218 libxvid_encoder_deps="libxvid"
2219
2220 # demuxers / muxers
2221 ac3_demuxer_select="ac3_parser"
2222 asf_demuxer_select="riffdec"
2223 asf_muxer_select="riffenc"
2224 asf_stream_muxer_select="asf_muxer"
2225 avi_demuxer_select="iso_media riffdec"
2226 avi_muxer_select="riffenc"
2227 avisynth_demuxer_deps="avisynth"
2228 avisynth_demuxer_select="riffdec"
2229 caf_demuxer_select="iso_media riffdec"
2230 dash_muxer_select="mp4_muxer"
2231 dirac_demuxer_select="dirac_parser"
2232 dv_demuxer_select="dvprofile"
2233 dv_muxer_select="dvprofile"
2234 dxa_demuxer_select="riffdec"
2235 eac3_demuxer_select="ac3_parser"
2236 f4v_muxer_select="mov_muxer"
2237 flac_demuxer_select="flac_parser"
2238 hds_muxer_select="flv_muxer"
2239 hls_muxer_select="mpegts_muxer"
2240 ipod_muxer_select="mov_muxer"
2241 ismv_muxer_select="mov_muxer"
2242 matroska_audio_muxer_select="matroska_muxer"
2243 matroska_demuxer_select="iso_media riffdec"
2244 matroska_demuxer_suggest="bzlib lzo zlib"
2245 matroska_muxer_select="iso_media riffenc"
2246 mmf_muxer_select="riffenc"
2247 mov_demuxer_select="iso_media riffdec"
2248 mov_demuxer_suggest="zlib"
2249 mov_muxer_select="iso_media riffenc rtpenc_chain"
2250 mp3_demuxer_select="mpegaudio_parser"
2251 mp4_muxer_select="mov_muxer"
2252 mpegts_demuxer_select="iso_media"
2253 mpegts_muxer_select="adts_muxer latm_muxer"
2254 mpegtsraw_demuxer_select="mpegts_demuxer"
2255 mxf_d10_muxer_select="mxf_muxer"
2256 nut_muxer_select="riffenc"
2257 nuv_demuxer_select="riffdec"
2258 oga_muxer_select="ogg_muxer"
2259 ogg_demuxer_select="dirac_parse"
2260 opus_muxer_select="ogg_muxer"
2261 psp_muxer_select="mov_muxer"
2262 rtp_demuxer_select="sdp_demuxer"
2263 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2264 rtsp_demuxer_select="http_protocol rtpdec"
2265 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2266 sap_demuxer_select="sdp_demuxer"
2267 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2268 sdp_demuxer_select="rtpdec"
2269 smoothstreaming_muxer_select="ismv_muxer"
2270 spdif_muxer_select="aac_parser"
2271 spx_muxer_select="ogg_muxer"
2272 swf_demuxer_suggest="zlib"
2273 tak_demuxer_select="tak_parser"
2274 tg2_muxer_select="mov_muxer"
2275 tgp_muxer_select="mov_muxer"
2276 w64_demuxer_select="wav_demuxer"
2277 wav_demuxer_select="riffdec"
2278 wav_muxer_select="riffenc"
2279 webm_muxer_select="iso_media riffenc"
2280 webm_muxer_suggest="libopus_encoder libvorbis_encoder libvpx_vp8_encoder libvpx_vp9_encoder"
2281 wtv_demuxer_select="mpegts_demuxer riffdec"
2282 xmv_demuxer_select="riffdec"
2283 xwma_demuxer_select="riffdec"
2284
2285 # indevs / outdevs
2286 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2287 alsa_outdev_deps="alsa_asoundlib_h"
2288 avfoundation_indev_deps="AVFoundation_AVFoundation_h"
2289 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2290 dv1394_indev_deps="dv1394"
2291 dv1394_indev_select="dv_demuxer"
2292 fbdev_indev_deps="linux_fb_h"
2293 jack_indev_deps="jack_jack_h pthreads"
2294 libcdio_indev_deps="libcdio"
2295 libdc1394_indev_deps="libdc1394"
2296 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2297 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2298 pulse_indev_deps="libpulse"
2299 sndio_indev_deps="sndio_h"
2300 sndio_outdev_deps="sndio_h"
2301 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2302 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2303 vfwcap_indev_extralibs="-lavicap32"
2304 x11grab_indev_deps="x11grab"
2305 x11grab_xcb_indev_deps="libxcb"
2306
2307 # protocols
2308 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2309 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2310 ffrtmpcrypt_protocol_select="tcp_protocol"
2311 ffrtmphttp_protocol_deps="!librtmp_protocol"
2312 ffrtmphttp_protocol_select="http_protocol"
2313 gopher_protocol_select="network"
2314 http_protocol_select="tcp_protocol"
2315 httpproxy_protocol_select="tcp_protocol"
2316 https_protocol_select="tls_protocol"
2317 icecast_protocol_select="http_protocol"
2318 librtmp_protocol_deps="librtmp"
2319 librtmpe_protocol_deps="librtmp"
2320 librtmps_protocol_deps="librtmp"
2321 librtmpt_protocol_deps="librtmp"
2322 librtmpte_protocol_deps="librtmp"
2323 mmsh_protocol_select="http_protocol"
2324 mmst_protocol_select="network"
2325 rtmp_protocol_deps="!librtmp_protocol"
2326 rtmp_protocol_select="tcp_protocol"
2327 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2328 rtmps_protocol_deps="!librtmp_protocol"
2329 rtmps_protocol_select="tls_protocol"
2330 rtmpt_protocol_select="ffrtmphttp_protocol"
2331 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2332 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2333 rtp_protocol_select="udp_protocol"
2334 sctp_protocol_deps="struct_sctp_event_subscribe"
2335 sctp_protocol_select="network"
2336 srtp_protocol_select="rtp_protocol srtp"
2337 tcp_protocol_select="network"
2338 tls_gnutls_protocol_deps="gnutls"
2339 tls_gnutls_protocol_select="tcp_protocol"
2340 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2341 tls_openssl_protocol_select="tcp_protocol"
2342 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2343 udp_protocol_select="network"
2344 unix_protocol_deps="sys_un_h"
2345 unix_protocol_select="network"
2346
2347 # filters
2348 blackframe_filter_deps="gpl"
2349 boxblur_filter_deps="gpl"
2350 bs2b_filter_deps="libbs2b"
2351 cropdetect_filter_deps="gpl"
2352 delogo_filter_deps="gpl"
2353 drawtext_filter_deps="libfreetype"
2354 frei0r_filter_deps="frei0r dlopen"
2355 frei0r_filter_extralibs='$ldl'
2356 frei0r_src_filter_deps="frei0r dlopen"
2357 frei0r_src_filter_extralibs='$ldl'
2358 hqdn3d_filter_deps="gpl"
2359 hwupload_cuda_filter_deps="cuda"
2360 interlace_filter_deps="gpl"
2361 ocv_filter_deps="libopencv"
2362 resample_filter_deps="avresample"
2363 scale_filter_deps="swscale"
2364 scale_npp_filter_deps="cuda libnpp"
2365 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2366
2367 # examples
2368 avcodec_example_deps="avcodec avutil"
2369 filter_audio_example_deps="avfilter avutil"
2370 metadata_example_deps="avformat avutil"
2371 output_example_deps="avcodec avformat avutil swscale"
2372 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2373 transcode_aac_example_deps="avcodec avformat avresample"
2374
2375 # libraries, in linking order
2376 avcodec_deps="avutil"
2377 avdevice_deps="avformat avcodec avutil"
2378 avfilter_deps="avutil"
2379 avformat_deps="avcodec avutil"
2380 avresample_deps="avutil"
2381 swscale_deps="avutil"
2382
2383 # programs
2384 avconv_deps="avcodec avfilter avformat avresample swscale"
2385 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2386                fps_filter null_filter resample_filter scale_filter
2387                setpts_filter trim_filter"
2388 avplay_deps="avcodec avfilter avformat avresample sdl"
2389 avplay_libs='$sdl_libs'
2390 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2391 avprobe_deps="avcodec avformat"
2392
2393 # documentation
2394 pod2man_deps="doc"
2395 texi2html_deps="doc"
2396
2397 # default parameters
2398
2399 logfile="config.log"
2400
2401 # installation paths
2402 prefix_default="/usr/local"
2403 bindir_default='${prefix}/bin'
2404 datadir_default='${prefix}/share/avconv'
2405 docdir_default='${prefix}/share/doc/libav'
2406 incdir_default='${prefix}/include'
2407 libdir_default='${prefix}/lib'
2408 mandir_default='${prefix}/share/man'
2409 shlibdir_default="$libdir_default"
2410
2411 # toolchain
2412 ar_default="ar"
2413 cc_default="gcc"
2414 host_cc_default="gcc"
2415 cp_f="cp -f"
2416 ln_s="ln -s -f"
2417 nm_default="nm -g"
2418 objformat="elf"
2419 pkg_config_default=pkg-config
2420 ranlib="ranlib"
2421 strip="strip"
2422 yasmexe="yasm"
2423
2424 # machine
2425 arch_default=$(uname -m)
2426 cpu="generic"
2427 intrinsics="none"
2428
2429 # OS
2430 target_os_default=$(tolower $(uname -s))
2431 host_os=$target_os_default
2432
2433 # configurable options
2434 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2435
2436 enable asm
2437 enable debug
2438 enable doc
2439 enable faan faandct faanidct
2440 enable optimizations
2441 enable safe_bitstream_reader
2442 enable static
2443 enable swscale_alpha
2444 enable valgrind_backtrace
2445
2446 # By default, enable only those hwaccels that have no external dependencies.
2447 enable d3d11va dxva2 vda vdpau
2448
2449 # build settings
2450 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2451 LIBPREF="lib"
2452 LIBSUF=".a"
2453 FULLNAME='$(NAME)$(BUILDSUF)'
2454 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2455 SLIBPREF="lib"
2456 SLIBSUF=".so"
2457 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2458 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2459 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2460 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2461 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2462 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2463
2464 asflags_filter=echo
2465 cflags_filter=echo
2466 ldflags_filter=echo
2467
2468 AS_C='-c'
2469 AS_O='-o $@'
2470 CC_C='-c'
2471 CC_E='-E -o $@'
2472 CC_O='-o $@'
2473 OBJCC_C='-c'
2474 OBJCC_E='-E -o $@'
2475 OBJCC_O='-o $@'
2476 LD_O='-o $@'
2477 LD_LIB='-l%'
2478 LD_PATH='-L'
2479 HOSTCC_C='-c'
2480 HOSTCC_E='-E -o $@'
2481 HOSTCC_O='-o $@'
2482 HOSTLD_O='-o $@'
2483
2484 host_libs='-lm'
2485 host_cflags_filter=echo
2486 host_ldflags_filter=echo
2487
2488 target_path='$(CURDIR)'
2489
2490 # since the object filename is not given with the -MM flag, the compiler
2491 # is only able to print the basename, and we must add the path ourselves
2492 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2493 DEPFLAGS='-MM'
2494
2495 # find source path
2496 if test -f configure; then
2497     source_path=.
2498 else
2499     source_path=$(cd $(dirname "$0"); pwd)
2500     echo "$source_path" | grep -q '[[:blank:]]' &&
2501         die "Out of tree builds are impossible with whitespace in source path."
2502     test -e "$source_path/config.h" &&
2503         die "Out of tree builds are impossible with config.h in source dir."
2504 fi
2505
2506 for v in "$@"; do
2507     r=${v#*=}
2508     l=${v%"$r"}
2509     r=$(sh_quote "$r")
2510     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2511 done
2512
2513 find_things(){
2514     thing=$1
2515     pattern=$2
2516     file=$source_path/$3
2517     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2518 }
2519
2520 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2521 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2522 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2523 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2524 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2525 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2526 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2527 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2528 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2529
2530 find_things_extern(){
2531     thing=$1
2532     pattern=$2
2533     file=$source_path/$3
2534     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2535 }
2536
2537 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2538 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2539
2540 ALL_COMPONENTS="
2541     $BSF_LIST
2542     $DECODER_LIST
2543     $DEMUXER_LIST
2544     $ENCODER_LIST
2545     $FILTER_LIST
2546     $HWACCEL_LIST
2547     $INDEV_LIST
2548     $MUXER_LIST
2549     $OUTDEV_LIST
2550     $PARSER_LIST
2551     $PROTOCOL_LIST
2552 "
2553
2554 for n in $COMPONENT_LIST; do
2555     v=$(toupper ${n%s})_LIST
2556     eval enable \$$v
2557     eval ${n}_if_any="\$$v"
2558 done
2559
2560 enable $ARCH_EXT_LIST
2561
2562 die_unknown(){
2563     echo "Unknown option \"$1\"."
2564     echo "See $0 --help for available options."
2565     exit 1
2566 }
2567
2568 print_3_columns() {
2569     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2570 }
2571
2572 show_list() {
2573     suffix=_$1
2574     shift
2575     echo $* | sed s/$suffix//g | print_3_columns
2576     exit 0
2577 }
2578
2579 rand_list(){
2580     IFS=', '
2581     set -- $*
2582     unset IFS
2583     for thing; do
2584         comp=${thing%:*}
2585         prob=${thing#$comp}
2586         prob=${prob#:}
2587         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2588         echo "prob ${prob:-0.5}"
2589         printf '%s\n' $comp
2590     done
2591 }
2592
2593 do_random(){
2594     action=$1
2595     shift
2596     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2597     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2598 }
2599
2600 for opt do
2601     optval="${opt#*=}"
2602     case "$opt" in
2603         --extra-ldflags=*)
2604             add_ldflags $optval
2605         ;;
2606         --extra-ldexeflags=*)
2607             add_ldexeflags $optval
2608         ;;
2609         --extra-libs=*)
2610             add_extralibs $optval
2611         ;;
2612         --disable-devices)
2613             disable $INDEV_LIST $OUTDEV_LIST
2614         ;;
2615         --enable-debug=*)
2616             debuglevel="$optval"
2617         ;;
2618         --disable-programs)
2619             disable $PROGRAM_LIST
2620         ;;
2621         --disable-everything)
2622             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2623         ;;
2624         --disable-all)
2625             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2626             disable $LIBRARY_LIST $PROGRAM_LIST doc
2627         ;;
2628         --enable-random|--disable-random)
2629             action=${opt%%-random}
2630             do_random ${action#--} $COMPONENT_LIST
2631         ;;
2632         --enable-random=*|--disable-random=*)
2633             action=${opt%%-random=*}
2634             do_random ${action#--} $optval
2635         ;;
2636         --enable-*=*|--disable-*=*)
2637             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2638             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2639             eval list=\$$(toupper $thing)_LIST
2640             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2641             $action $(filter "$name" $list)
2642         ;;
2643         --enable-avserver|--disable-avserver*)
2644             warn "avserver has been removed, the ${opt} option is only"\
2645                  "provided for compatibility and will be removed in the future"
2646         ;;
2647         --enable-?*|--disable-?*)
2648             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2649             if is_in $option $COMPONENT_LIST; then
2650                 test $action = disable && action=unset
2651                 eval $action \$$(toupper ${option%s})_LIST
2652             elif is_in $option $CMDLINE_SELECT; then
2653                 $action $option
2654             else
2655                 die_unknown $opt
2656             fi
2657         ;;
2658         --list-*)
2659             NAME="${opt#--list-}"
2660             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2661             NAME=${NAME%s}
2662             eval show_list $NAME \$$(toupper $NAME)_LIST
2663         ;;
2664         --help|-h) show_help
2665         ;;
2666         *)
2667             optname="${opt%%=*}"
2668             optname="${optname#--}"
2669             optname=$(echo "$optname" | sed 's/-/_/g')
2670             if is_in $optname $CMDLINE_SET; then
2671                 eval $optname='$optval'
2672             elif is_in $optname $CMDLINE_APPEND; then
2673                 append $optname "$optval"
2674             else
2675                 die_unknown $opt
2676             fi
2677         ;;
2678     esac
2679 done
2680
2681 for e in $env; do
2682     eval "export $e"
2683 done
2684
2685 disabled logging && logfile=/dev/null
2686
2687 # Disable all the library-specific components if the library itself
2688 # is disabled, see AVCODEC_LIST and following _LIST variables.
2689
2690 disable_components(){
2691     disabled ${1} && disable $(
2692         eval components="\$$(toupper ${1})_COMPONENTS"
2693         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2694     )
2695 }
2696
2697 map 'disable_components $v' $LIBRARY_LIST
2698
2699 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2700 set >> $logfile
2701
2702 case "$toolchain" in
2703     *-asan)
2704         cc_default="${toolchain%-asan}"
2705         add_cflags  -fsanitize=address
2706         add_ldflags -fsanitize=address
2707     ;;
2708     *-msan)
2709         cc_default="${toolchain%-msan}"
2710         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2711         add_ldflags -fsanitize=memory
2712     ;;
2713     *-tsan)
2714         cc_default="${toolchain%-tsan}"
2715         add_cflags  -fsanitize=thread -pie
2716         add_ldflags -fsanitize=thread -pie
2717         case "$toolchain" in
2718             gcc-tsan)
2719                 add_cflags  -fPIC
2720                 add_ldflags -fPIC
2721                 ;;
2722         esac
2723     ;;
2724     *-usan)
2725         cc_default="${toolchain%-usan}"
2726         add_cflags  -fsanitize=undefined
2727         add_ldflags -fsanitize=undefined
2728         case "$toolchain" in
2729             clang-usan)
2730                 add_cflags -O1
2731                 ;;
2732         esac
2733     ;;
2734     valgrind-*)
2735         target_exec_default="valgrind"
2736         case "$toolchain" in
2737             valgrind-massif)
2738                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2739                 ;;
2740             valgrind-memcheck)
2741                 target_exec_args="--track-origins=yes --leak-check=full"
2742                 ;;
2743         esac
2744     ;;
2745     msvc)
2746         # Check whether the current MSVC version needs the C99 converter.
2747         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2748         # support enough of C99 to build libav. Default to the new
2749         # behaviour if the regexp was unable to match anything, since this
2750         # successfully parses the version number of existing supported
2751         # versions that require the converter (MSVC 2010 and 2012).
2752         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2753         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2754             cc_default="cl"
2755         else
2756             cc_default="c99wrap cl"
2757         fi
2758         ld_default="$source_path/compat/windows/mslink"
2759         nm_default="dumpbin -symbols"
2760         ar_default="lib"
2761         case "$arch" in
2762         arm*)
2763             as_default="armasm"
2764             ;;
2765         esac
2766         target_os_default="win32"
2767         # Use a relative path for TMPDIR. This makes sure all the
2768         # ffconf temp files are written with a relative path, avoiding
2769         # issues with msys/win32 path conversion for MSVC parameters
2770         # such as -Fo<file> or -out:<file>.
2771         TMPDIR=.
2772     ;;
2773     icl)
2774         cc_default="icl"
2775         ld_default="xilink"
2776         nm_default="dumpbin -symbols"
2777         ar_default="xilib"
2778         target_os_default="win32"
2779         TMPDIR=.
2780     ;;
2781     gcov)
2782         add_cflags  -fprofile-arcs -ftest-coverage
2783         add_ldflags -fprofile-arcs -ftest-coverage
2784     ;;
2785     llvm-cov)
2786         add_cflags -fprofile-arcs -ftest-coverage
2787         add_ldflags --coverage
2788     ;;
2789     hardened)
2790         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2791         add_cflags   -fno-strict-overflow -fstack-protector-all
2792         add_ldflags  -Wl,-z,relro -Wl,-z,now
2793     ;;
2794     ?*)
2795         die "Unknown toolchain $toolchain"
2796     ;;
2797 esac
2798
2799 test -n "$cross_prefix" && enable cross_compile
2800
2801 if enabled cross_compile; then
2802     test -n "$arch" && test -n "$target_os" ||
2803         die "Must specify target arch and OS when cross-compiling"
2804 fi
2805
2806 ar_default="${cross_prefix}${ar_default}"
2807 cc_default="${cross_prefix}${cc_default}"
2808 occ_default="${cross_prefix}${occ_default}"
2809 nm_default="${cross_prefix}${nm_default}"
2810 pkg_config_default="${cross_prefix}${pkg_config_default}"
2811 ranlib="${cross_prefix}${ranlib}"
2812 strip="${cross_prefix}${strip}"
2813
2814 sysinclude_default="${sysroot}/usr/include"
2815
2816 set_default arch cc pkg_config sysinclude target_exec target_os
2817 enabled cross_compile || host_cc_default=$cc
2818 set_default host_cc
2819
2820 if ! $pkg_config --version >/dev/null 2>&1; then
2821     warn "$pkg_config not found, library detection may fail."
2822     pkg_config=false
2823 fi
2824
2825 exesuf() {
2826     case $1 in
2827         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2828     esac
2829 }
2830
2831 EXESUF=$(exesuf $target_os)
2832 HOSTEXESUF=$(exesuf $host_os)
2833
2834 # set temporary file name
2835 : ${TMPDIR:=$TEMPDIR}
2836 : ${TMPDIR:=$TMP}
2837 : ${TMPDIR:=/tmp}
2838
2839 if ! check_cmd mktemp -u XXXXXX; then
2840     # simple replacement for missing mktemp
2841     # NOT SAFE FOR GENERAL USE
2842     mktemp(){
2843         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2844     }
2845 fi
2846
2847 tmpfile(){
2848     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2849         (set -C; exec > $tmp) 2>/dev/null ||
2850         die "Unable to create temporary file in $TMPDIR."
2851     append TMPFILES $tmp
2852     eval $1=$tmp
2853 }
2854
2855 trap 'rm -f -- $TMPFILES' EXIT
2856
2857 tmpfile TMPASM .asm
2858 tmpfile TMPC   .c
2859 tmpfile TMPE   $EXESUF
2860 tmpfile TMPH   .h
2861 tmpfile TMPO   .o
2862 tmpfile TMPS   .S
2863 tmpfile TMPSH  .sh
2864 tmpfile TMPV   .ver
2865
2866 unset -f mktemp
2867
2868 chmod +x $TMPE
2869
2870 # make sure we can execute files in $TMPDIR
2871 cat > $TMPSH 2>> $logfile <<EOF
2872 #! /bin/sh
2873 EOF
2874 chmod +x $TMPSH >> $logfile 2>&1
2875 if ! $TMPSH >> $logfile 2>&1; then
2876     cat <<EOF
2877 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2878 variable to another directory and make sure that it is not mounted noexec.
2879 EOF
2880     die "Sanity test failed."
2881 fi
2882
2883 armasm_flags(){
2884     for flag; do
2885         case $flag in
2886             # Filter out MSVC cl.exe options from cflags that shouldn't
2887             # be passed to gas-preprocessor
2888             -M[TD]*)                                            ;;
2889             *)                  echo $flag                      ;;
2890         esac
2891    done
2892 }
2893
2894 ccc_flags(){
2895     for flag; do
2896         case $flag in
2897             -std=c99)           echo -c99                       ;;
2898             -mcpu=*)            echo -arch ${flag#*=}           ;;
2899             -mieee)             echo -ieee                      ;;
2900             -O*|-fast)          echo $flag                      ;;
2901             -fno-math-errno)    echo -assume nomath_errno       ;;
2902             -g)                 echo -g3                        ;;
2903             -Wall)              echo -msg_enable level2         ;;
2904             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2905             -Wl,*)              echo $flag                      ;;
2906             -f*|-W*)                                            ;;
2907             *)                  echo $flag                      ;;
2908         esac
2909    done
2910 }
2911
2912 cparser_flags(){
2913     for flag; do
2914         case $flag in
2915             -Wno-switch)             echo -Wno-switch-enum ;;
2916             -Wno-format-zero-length) ;;
2917             -Wdisabled-optimization) ;;
2918             -Wno-pointer-sign)       echo -Wno-other ;;
2919             *)                       echo $flag ;;
2920         esac
2921     done
2922 }
2923
2924 msvc_common_flags(){
2925     for flag; do
2926         case $flag in
2927             # In addition to specifying certain flags under the compiler
2928             # specific filters, they must be specified here as well or else the
2929             # generic catch all at the bottom will print the original flag.
2930             -Wall)                ;;
2931             -std=c99)             ;;
2932             # Common flags
2933             -fomit-frame-pointer) ;;
2934             -g)                   echo -Z7 ;;
2935             -fno-math-errno)      ;;
2936             -fno-common)          ;;
2937             -fno-signed-zeros)    ;;
2938             -fPIC)                ;;
2939             -mthumb)              ;;
2940             -march=*)             ;;
2941             -lz)                  echo zlib.lib ;;
2942             -lavifil32)           echo vfw32.lib ;;
2943             -lavicap32)           echo vfw32.lib user32.lib ;;
2944             -lx264)               echo libx264.lib ;;
2945             -l*)                  echo ${flag#-l}.lib ;;
2946             -L*)                  echo -libpath:${flag#-L} ;;
2947             *)                    echo $flag ;;
2948         esac
2949     done
2950 }
2951
2952 msvc_flags(){
2953     msvc_common_flags "$@"
2954     for flag; do
2955         case $flag in
2956             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2957                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2958                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2959                                        -wd4273 -wd4554 -wd4701 ;;
2960         esac
2961     done
2962 }
2963
2964 icl_flags(){
2965     msvc_common_flags "$@"
2966     for flag; do
2967         case $flag in
2968             # Despite what Intel's documentation says -Wall, which is supported
2969             # on Windows, does enable remarks so disable them here.
2970             -Wall)                echo $flag -Qdiag-disable:remark ;;
2971             -std=c99)             echo -Qstd=c99 ;;
2972         esac
2973     done
2974 }
2975
2976 pgi_flags(){
2977     for flag; do
2978         case $flag in
2979             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2980             -fomit-frame-pointer) echo -Mnoframe ;;
2981             -g)                   echo -gopt ;;
2982             *)                    echo $flag ;;
2983         esac
2984     done
2985 }
2986
2987 suncc_flags(){
2988     for flag; do
2989         case $flag in
2990             -march=*|-mcpu=*)
2991                 case "${flag#*=}" in
2992                     native)                   echo -xtarget=native       ;;
2993                     v9|niagara)               echo -xarch=sparc          ;;
2994                     ultrasparc)               echo -xarch=sparcvis       ;;
2995                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2996                     i586|pentium)             echo -xchip=pentium        ;;
2997                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2998                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2999                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3000                     pentium4*)          echo -xtarget=pentium4           ;;
3001                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3002                     *-sse3)             echo -xarch=sse3                 ;;
3003                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3004                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3005                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3006                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3007                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3008                     k8|opteron|athlon64|athlon-fx)
3009                                                echo -xarch=sse2a         ;;
3010                     athlon*)                   echo -xarch=pentium_proa  ;;
3011                 esac
3012                 ;;
3013             -std=c99)             echo -xc99              ;;
3014             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3015             -fPIC)                echo -KPIC -xcode=pic32 ;;
3016             -W*,*)                echo $flag              ;;
3017             -f*-*|-W*|-mimpure-text)                      ;;
3018             -shared)              echo -G                 ;;
3019             *)                    echo $flag              ;;
3020         esac
3021     done
3022 }
3023
3024 tms470_flags(){
3025     for flag; do
3026         case $flag in
3027             -march=*|-mcpu=*)
3028                 case "${flag#*=}" in
3029                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3030                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3031                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3032                     armv6*|arm11*)          echo -mv=6   ;;
3033                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3034                                             echo -mv=5e  ;;
3035                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3036                 esac
3037                 ;;
3038             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3039             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3040             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3041             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3042             -msoft-float)   echo --float_support=vfplib       ;;
3043             -O[0-3]|-mf=*)  echo $flag                        ;;
3044             -g)             echo -g -mn                       ;;
3045             -pds=*)         echo $flag                        ;;
3046             -D*|-I*)        echo $flag                        ;;
3047             --gcc|--abi=*)  echo $flag                        ;;
3048             -me)            echo $flag                        ;;
3049         esac
3050     done
3051 }
3052
3053 probe_cc(){
3054     pfx=$1
3055     _cc=$2
3056
3057     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3058     unset _ld_o _ldflags _ld_lib _ld_path
3059     unset _depflags _DEPCMD _DEPFLAGS
3060     _flags_filter=echo
3061
3062     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3063         _type=llvm_gcc
3064         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3065         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3066         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3067         _cflags_speed='-O3'
3068         _cflags_size='-Os'
3069     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3070         _type=gcc
3071         gcc_version=$($_cc --version | head -n1)
3072         gcc_basever=$($_cc -dumpversion)
3073         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3074         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3075         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3076         if ! $_cc -dumpversion | grep -q '^2\.'; then
3077             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3078         fi
3079         _cflags_speed='-O3'
3080         _cflags_size='-Os'
3081     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3082         _type=icc
3083         _ident=$($_cc --version | head -n1)
3084         _depflags='-MMD'
3085         _cflags_speed='-O3'
3086         _cflags_size='-Os'
3087         _cflags_noopt='-O1'
3088     elif $_cc -v 2>&1 | grep -q xlc; then
3089         _type=xlc
3090         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3091         _cflags_speed='-O5'
3092         _cflags_size='-O5 -qcompact'
3093     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3094         _type=ccc
3095         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3096         _DEPFLAGS='-M'
3097         _cflags_speed='-fast'
3098         _cflags_size='-O1'
3099         _flags_filter=ccc_flags
3100     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3101         test -d "$sysroot" || die "No valid sysroot specified."
3102         _type=armcc
3103         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3104         armcc_conf="$PWD/armcc.conf"
3105         $_cc --arm_linux_configure                 \
3106              --arm_linux_config_file="$armcc_conf" \
3107              --configure_sysroot="$sysroot"        \
3108              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3109              die "Error creating armcc configuration file."
3110         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3111         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3112         as_default="${cross_prefix}gcc"
3113         _depflags='-MMD'
3114         _cflags_speed='-O3'
3115         _cflags_size='-Os'
3116     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3117         _type=tms470
3118         _ident=$($_cc -version | head -n1 | tr -s ' ')
3119         _flags='--gcc --abi=eabi -me'
3120         _cc_e='-ppl -fe=$@'
3121         _cc_o='-fe=$@'
3122         _depflags='-ppa -ppd=$(@:.o=.d)'
3123         _cflags_speed='-O3 -mf=5'
3124         _cflags_size='-O3 -mf=2'
3125         _flags_filter=tms470_flags
3126     elif $_cc -v 2>&1 | grep -q clang; then
3127         _type=clang
3128         _ident=$($_cc --version 2>/dev/null | head -n1)
3129         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3130         _cflags_speed='-O3'
3131         _cflags_size='-Os'
3132     elif $_cc -V 2>&1 | grep -q Sun; then
3133         _type=suncc
3134         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3135         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3136         _DEPFLAGS='-xM1 -xc99'
3137         _ldflags='-std=c99'
3138         _cflags_speed='-O5'
3139         _cflags_size='-O5 -xspace'
3140         _flags_filter=suncc_flags
3141     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3142         _type=pathscale
3143         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3144         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3145         _cflags_speed='-O2'
3146         _cflags_size='-Os'
3147         _flags_filter='filter_out -Wdisabled-optimization'
3148     elif $_cc -v 2>&1 | grep -q Open64; then
3149         _type=open64
3150         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3151         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3152         _cflags_speed='-O2'
3153         _cflags_size='-Os'
3154         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3155     elif $_cc -V 2>&1 | grep -q Portland; then
3156         _type=pgi
3157         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3158         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3159         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3160         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3161         _cflags_noopt="-O1"
3162         _flags_filter=pgi_flags
3163     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3164         _type=armasm
3165         _ident=$($_cc | head -n1)
3166         # 4509: "This form of conditional instruction is deprecated"
3167         _flags="-nologo -ignore 4509"
3168         _flags_filter=armasm_flags
3169     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3170         _type=msvc
3171         _ident=$($_cc 2>&1 | head -n1)
3172         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3173         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3174         _cflags_speed="-O2"
3175         _cflags_size="-O1"
3176         if $_cc -nologo- 2>&1 | grep -q Linker; then
3177             _ld_o='-out:$@'
3178         else
3179             _ld_o='-Fe$@'
3180         fi
3181         _cc_o='-Fo$@'
3182         _cc_e='-P -Fi$@'
3183         _flags_filter=msvc_flags
3184         _ld_lib='lib%.a'
3185         _ld_path='-libpath:'
3186         _flags='-nologo'
3187         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3188     elif $_cc 2>&1 | grep -q Intel; then
3189         _type=icl
3190         _ident=$($_cc 2>&1 | head -n1)
3191         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3192         # Not only is O3 broken on 13.x+ but it is slower on all previous
3193         # versions (tested) as well.
3194         _cflags_speed="-O2"
3195         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3196         if $_cc 2>&1 | grep -q Linker; then
3197             _ld_o='-out:$@'
3198         else
3199             _ld_o='-Fe$@'
3200         fi
3201         _cc_o='-Fo$@'
3202         _cc_e='-P'
3203         _flags_filter=icl_flags
3204         _ld_lib='lib%.a'
3205         _ld_path='-libpath:'
3206         # -Qdiag-error to make icl error when seeing certain unknown arguments
3207         _flags='-nologo -Qdiag-error:4044,10157'
3208         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3209         # with MSVC which enables it by default.
3210         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS'
3211     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3212         _type=cparser
3213         _ident=$($_cc --version | head -n1)
3214         _depflags='-MMD'
3215         _cflags_speed='-O4'
3216         _cflags_size='-O2'
3217         _flags_filter=cparser_flags
3218     fi
3219
3220     eval ${pfx}_type=\$_type
3221     eval ${pfx}_ident=\$_ident
3222 }
3223
3224 set_ccvars(){
3225     eval ${1}_C=\${_cc_c-\${${1}_C}}
3226     eval ${1}_E=\${_cc_e-\${${1}_E}}
3227     eval ${1}_O=\${_cc_o-\${${1}_O}}
3228
3229     if [ -n "$_depflags" ]; then
3230         eval ${1}_DEPFLAGS=\$_depflags
3231     else
3232         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3233         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3234         eval DEP${1}FLAGS=\$_flags
3235     fi
3236 }
3237
3238 probe_cc cc "$cc"
3239 cflags_filter=$_flags_filter
3240 cflags_speed=$_cflags_speed
3241 cflags_size=$_cflags_size
3242 cflags_noopt=$_cflags_noopt
3243 add_cflags $_flags $_cflags
3244 cc_ldflags=$_ldflags
3245 set_ccvars CC
3246
3247 probe_cc hostcc "$host_cc"
3248 host_cflags_filter=$_flags_filter
3249 add_host_cflags  $_flags $_cflags
3250 set_ccvars HOSTCC
3251
3252 test -n "$cc_type" && enable $cc_type ||
3253     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3254
3255 : ${as_default:=$cc}
3256 : ${objcc_default:=$cc}
3257 : ${dep_cc_default:=$cc}
3258 : ${ld_default:=$cc}
3259 : ${host_ld_default:=$host_cc}
3260 set_default ar as objcc dep_cc ld host_ld
3261
3262 probe_cc as "$as"
3263 asflags_filter=$_flags_filter
3264 add_asflags $_flags $_cflags
3265 set_ccvars AS
3266
3267 probe_cc objcc "$objcc"
3268 objcflags_filter=$_flags_filter
3269 add_objcflags $_flags $_cflags
3270 set_ccvars OBJC
3271
3272 probe_cc ld "$ld"
3273 ldflags_filter=$_flags_filter
3274 add_ldflags $_flags $_ldflags
3275 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3276 LD_O=${_ld_o-$LD_O}
3277 LD_LIB=${_ld_lib-$LD_LIB}
3278 LD_PATH=${_ld_path-$LD_PATH}
3279
3280 probe_cc hostld "$host_ld"
3281 host_ldflags_filter=$_flags_filter
3282 add_host_ldflags $_flags $_ldflags
3283 HOSTLD_O=${_ld_o-$HOSTLD_O}
3284
3285 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3286     probe_cc depcc "$dep_cc"
3287     CCDEP=${_DEPCMD:-$DEPCMD}
3288     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3289     DEPCCFLAGS=$_flags
3290 fi
3291
3292 if $ar 2>&1 | grep -q Microsoft; then
3293     arflags="-nologo"
3294     ar_o='-out:$@'
3295 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3296     arflags="rq"
3297     ar_o='$@'
3298 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3299     arflags='-Xany -r -c'
3300     ar_o='$@'
3301 else
3302     arflags="rc"
3303     ar_o='$@'
3304 fi
3305
3306 add_cflags $extra_cflags
3307 add_objcflags $extra_objcflags
3308 add_asflags $extra_cflags
3309
3310 if test -n "$sysroot"; then
3311     case "$cc_type" in
3312         gcc|llvm_gcc|clang)
3313             add_cppflags --sysroot="$sysroot"
3314             add_ldflags --sysroot="$sysroot"
3315         ;;
3316         tms470)
3317             add_cppflags -I"$sysinclude"
3318             add_ldflags  --sysroot="$sysroot"
3319         ;;
3320     esac
3321 fi
3322
3323 if test "$cpu" = host; then
3324     enabled cross_compile &&
3325         die "--cpu=host makes no sense when cross-compiling."
3326
3327     case "$cc_type" in
3328         gcc|llvm_gcc)
3329             check_native(){
3330                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3331                 sed -n "/cc1.*$1=/{
3332                             s/.*$1=\\([^ ]*\\).*/\\1/
3333                             p
3334                             q
3335                         }" $TMPE
3336             }
3337             cpu=$(check_native -march || check_native -mcpu)
3338         ;;
3339     esac
3340
3341     test "${cpu:-host}" = host &&
3342         die "--cpu=host not supported with compiler $cc"
3343 fi
3344
3345 # Deal with common $arch aliases
3346 case "$arch" in
3347     aarch64|arm64)
3348         arch="aarch64"
3349     ;;
3350     arm*)
3351         arch="arm"
3352     ;;
3353     mips*|IP*)
3354         case "$arch" in
3355         *el)
3356             add_cppflags -EL
3357             add_ldflags -EL
3358         ;;
3359         *eb)
3360             add_cppflags -EB
3361             add_ldflags -EB
3362         ;;
3363         esac
3364         arch="mips"
3365     ;;
3366     parisc*|hppa*)
3367         arch="parisc"
3368     ;;
3369     "Power Macintosh"|ppc*|powerpc*)
3370         arch="ppc"
3371     ;;
3372     s390|s390x)
3373         arch="s390"
3374     ;;
3375     sh4|sh)
3376         arch="sh4"
3377     ;;
3378     sun4u|sparc*)
3379         arch="sparc"
3380     ;;
3381     tilegx|tile-gx)
3382         arch="tilegx"
3383     ;;
3384     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3385         arch="x86"
3386     ;;
3387 esac
3388
3389 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3390 enable $arch
3391
3392 # Add processor-specific flags
3393 if enabled aarch64; then
3394
3395     case $cpu in
3396         armv*)
3397             cpuflags="-march=$cpu"
3398         ;;
3399         *)
3400             cpuflags="-mcpu=$cpu"
3401         ;;
3402     esac
3403
3404 elif enabled alpha; then
3405
3406     cpuflags="-mcpu=$cpu"
3407
3408 elif enabled arm; then
3409
3410     check_arm_arch() {
3411         check_cpp_condition stddef.h \
3412             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3413             $cpuflags
3414     }
3415
3416     probe_arm_arch() {
3417         if   check_arm_arch 4;        then echo armv4;
3418         elif check_arm_arch 4T;       then echo armv4t;
3419         elif check_arm_arch 5;        then echo armv5;
3420         elif check_arm_arch 5E;       then echo armv5e;
3421         elif check_arm_arch 5T;       then echo armv5t;
3422         elif check_arm_arch 5TE;      then echo armv5te;
3423         elif check_arm_arch 5TEJ;     then echo armv5te;
3424         elif check_arm_arch 6;        then echo armv6;
3425         elif check_arm_arch 6J;       then echo armv6j;
3426         elif check_arm_arch 6K;       then echo armv6k;
3427         elif check_arm_arch 6Z;       then echo armv6z;
3428         elif check_arm_arch 6ZK;      then echo armv6zk;
3429         elif check_arm_arch 6T2;      then echo armv6t2;
3430         elif check_arm_arch 7;        then echo armv7;
3431         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3432         elif check_arm_arch 7S;       then echo armv7-a;
3433         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3434         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3435         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3436         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3437         fi
3438     }
3439
3440     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3441
3442     case $cpu in
3443         armv*)
3444             cpuflags="-march=$cpu"
3445             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3446         ;;
3447         *)
3448             cpuflags="-mcpu=$cpu"
3449             case $cpu in
3450                 cortex-a*)                               subarch=armv7a  ;;
3451                 cortex-r*)                               subarch=armv7r  ;;
3452                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3453                 arm11*)                                  subarch=armv6   ;;
3454                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3455                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3456                 *)                             subarch=$(probe_arm_arch) ;;
3457             esac
3458         ;;
3459     esac
3460
3461     case "$subarch" in
3462         armv5t*)    enable fast_clz                ;;
3463         armv[6-8]*) enable fast_clz fast_unaligned ;;
3464     esac
3465
3466 elif enabled avr32; then
3467
3468     case $cpu in
3469         ap7[02]0[0-2])
3470             subarch="avr32_ap"
3471             cpuflags="-mpart=$cpu"
3472         ;;
3473         ap)
3474             subarch="avr32_ap"
3475             cpuflags="-march=$cpu"
3476         ;;
3477         uc3[ab]*)
3478             subarch="avr32_uc"
3479             cpuflags="-mcpu=$cpu"
3480         ;;
3481         uc)
3482             subarch="avr32_uc"
3483             cpuflags="-march=$cpu"
3484         ;;
3485     esac
3486
3487 elif enabled bfin; then
3488
3489     cpuflags="-mcpu=$cpu"
3490
3491 elif enabled mips; then
3492
3493     cpuflags="-march=$cpu"
3494
3495 elif enabled ppc; then
3496
3497     disable ldbrx
3498
3499     case $(tolower $cpu) in
3500         601|ppc601|powerpc601)
3501             cpuflags="-mcpu=601"
3502             disable altivec
3503         ;;
3504         603*|ppc603*|powerpc603*)
3505             cpuflags="-mcpu=603"
3506             disable altivec
3507         ;;
3508         604*|ppc604*|powerpc604*)
3509             cpuflags="-mcpu=604"
3510             disable altivec
3511         ;;
3512         g3|75*|ppc75*|powerpc75*)
3513             cpuflags="-mcpu=750"
3514             disable altivec
3515         ;;
3516         g4|745*|ppc745*|powerpc745*)
3517             cpuflags="-mcpu=7450"
3518             disable vsx
3519         ;;
3520         74*|ppc74*|powerpc74*)
3521             cpuflags="-mcpu=7400"
3522             disable vsx
3523         ;;
3524         g5|970|ppc970|powerpc970)
3525             cpuflags="-mcpu=970"
3526             disable vsx
3527         ;;
3528         power[3-6]*)
3529             cpuflags="-mcpu=$cpu"
3530             disable vsx
3531         ;;
3532         power[7-8]*)
3533             cpuflags="-mcpu=$cpu"
3534             enable ldbrx
3535         ;;
3536         cell)
3537             cpuflags="-mcpu=cell"
3538             enable ldbrx
3539             disable vsx
3540         ;;
3541         e500mc)
3542             cpuflags="-mcpu=e500mc"
3543             disable altivec
3544         ;;
3545         e500v2)
3546             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3547             disable altivec
3548             disable dcbzl
3549         ;;
3550         e500)
3551             cpuflags="-mcpu=8540 -mhard-float"
3552             disable altivec
3553             disable dcbzl
3554         ;;
3555     esac
3556
3557 elif enabled sparc; then
3558
3559     case $cpu in
3560         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3561             cpuflags="-mcpu=$cpu"
3562         ;;
3563         ultrasparc*|niagara[234])
3564             cpuflags="-mcpu=$cpu"
3565         ;;
3566     esac
3567
3568 elif enabled x86; then
3569
3570     case $cpu in
3571         i[345]86|pentium)
3572             cpuflags="-march=$cpu"
3573             disable i686
3574             disable mmx
3575         ;;
3576         # targets that do NOT support nopl and conditional mov (cmov)
3577         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3578             cpuflags="-march=$cpu"
3579             disable i686
3580         ;;
3581         # targets that do support nopl and conditional mov (cmov)
3582         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3583             cpuflags="-march=$cpu"
3584             enable i686
3585             enable fast_cmov
3586         ;;
3587         # targets that do support conditional mov but on which it's slow
3588         pentium4|pentium4m|prescott|nocona)
3589             cpuflags="-march=$cpu"
3590             enable i686
3591             disable fast_cmov
3592         ;;
3593     esac
3594
3595 fi
3596
3597 if [ "$cpu" != generic ]; then
3598     add_cflags  $cpuflags
3599     add_asflags $cpuflags
3600     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3601 fi
3602
3603 # compiler sanity check
3604 check_exec <<EOF
3605 int main(void){ return 0; }
3606 EOF
3607 if test "$?" != 0; then
3608     echo "$cc is unable to create an executable file."
3609     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3610         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3611         echo "Only do this if you know what cross compiling means."
3612     fi
3613     die "C compiler test failed."
3614 fi
3615
3616 add_cppflags -D_ISOC99_SOURCE
3617 check_cflags -std=c99
3618 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3619 #include <stdlib.h>
3620 EOF
3621 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3622 #include <stdlib.h>
3623 EOF
3624
3625 add_host_cppflags -D_ISOC99_SOURCE
3626 check_host_cflags -std=c99
3627 check_host_cflags -Wall
3628 check_host_cflags -O3
3629
3630 check_64bit(){
3631     arch32=$1
3632     arch64=$2
3633     expr=$3
3634     check_code cc "" "int test[2*($expr) - 1]" &&
3635         subarch=$arch64 || subarch=$arch32
3636 }
3637
3638 case "$arch" in
3639     aarch64|alpha|ia64)
3640         spic=$shared
3641     ;;
3642     mips)
3643         check_64bit mips mips64 '_MIPS_SIM > 1'
3644         spic=$shared
3645     ;;
3646     parisc)
3647         check_64bit parisc parisc64 'sizeof(void *) > 4'
3648         spic=$shared
3649     ;;
3650     ppc)
3651         check_64bit ppc ppc64 'sizeof(void *) > 4'
3652         spic=$shared
3653     ;;
3654     s390)
3655         check_64bit s390 s390x 'sizeof(void *) > 4'
3656         spic=$shared
3657     ;;
3658     sparc)
3659         check_64bit sparc sparc64 'sizeof(void *) > 4'
3660         spic=$shared
3661     ;;
3662     x86)
3663         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3664         if test "$subarch" = "x86_64"; then
3665             spic=$shared
3666         fi
3667     ;;
3668 esac
3669
3670 enable $subarch
3671 enabled spic && enable_weak pic
3672
3673 # OS specific
3674 case $target_os in
3675     aix)
3676         SHFLAGS=-shared
3677         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3678         enabled shared && add_ldflags -Wl,-brtl
3679         ;;
3680     android)
3681         disable symver
3682         enable section_data_rel_ro
3683         SLIB_INSTALL_NAME='$(SLIBNAME)'
3684         SLIB_INSTALL_LINKS=
3685         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3686         ;;
3687     haiku)
3688         prefix_default="/boot/common"
3689         network_extralibs="-lnetwork"
3690         host_libs=
3691         ;;
3692     sunos)
3693         SHFLAGS='-shared -Wl,-h,$$(@F)'
3694         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3695         network_extralibs="-lsocket -lnsl"
3696         # When using suncc to build, the Solaris linker will mark
3697         # an executable with each instruction set encountered by
3698         # the Solaris assembler.  As our libraries contain their own
3699         # guards for processor-specific code, instead suppress
3700         # generation of the HWCAPS ELF section on Solaris x86 only.
3701         enabled_all suncc x86 &&
3702             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3703             add_ldflags -Wl,-M,mapfile
3704         nm_default='nm -P -g'
3705         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
3706         ;;
3707     netbsd)
3708         disable symver
3709         oss_indev_extralibs="-lossaudio"
3710         oss_outdev_extralibs="-lossaudio"
3711         ;;
3712     openbsd|bitrig)
3713         disable symver
3714         SHFLAGS='-shared'
3715         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3716         SLIB_INSTALL_LINKS=
3717         oss_indev_extralibs="-lossaudio"
3718         oss_outdev_extralibs="-lossaudio"
3719         ;;
3720     dragonfly)
3721         disable symver
3722         ;;
3723     freebsd)
3724         ;;
3725     bsd/os)
3726         add_extralibs -lpoll -lgnugetopt
3727         ;;
3728     darwin)
3729         enabled ppc && add_asflags -force_cpusubtype_ALL
3730         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3731         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3732         add_ldflags -Wl,-dynamic,-search_paths_first
3733         SLIBSUF=".dylib"
3734         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3735         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3736         objformat="macho"
3737         enabled x86_64 && objformat="macho64"
3738         enabled_any pic shared ||
3739             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3740         ;;
3741     msys*)
3742         die "Native MSYS builds are discouraged, please use the MINGW environment.";
3743         ;;
3744     mingw32*|mingw64*)
3745         if test $target_os = "mingw32ce"; then
3746             disable network
3747         else
3748             target_os=mingw32
3749         fi
3750         LIBTARGET=i386
3751         if enabled x86_64; then
3752             LIBTARGET="i386:x86-64"
3753         elif enabled arm; then
3754             LIBTARGET=arm-wince
3755         fi
3756         check_ldflags -Wl,--nxcompat
3757         check_ldflags -Wl,--dynamicbase
3758         shlibdir_default="$bindir_default"
3759         SLIBPREF=""
3760         SLIBSUF=".dll"
3761         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3762         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3763         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3764         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3765         SLIB_INSTALL_LINKS=
3766         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3767         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3768         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3769         objformat="win32"
3770         dlltool="${cross_prefix}dlltool"
3771         ranlib=:
3772         enable dos_paths
3773         ;;
3774     win32|win64)
3775         disable symver
3776         if enabled shared; then
3777             # Link to the import library instead of the normal static library
3778             # for shared libs.
3779             LD_LIB='%.lib'
3780             # Cannot build both shared and static libs with MSVC or icl.
3781             disable static
3782         fi
3783         shlibdir_default="$bindir_default"
3784         SLIBPREF=""
3785         SLIBSUF=".dll"
3786         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3787         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3788         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3789         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3790         SLIB_INSTALL_LINKS=
3791         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3792         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3793         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3794         objformat="win32"
3795         ranlib=:
3796         enable dos_paths
3797         ;;
3798     cygwin*)
3799         target_os=cygwin
3800         shlibdir_default="$bindir_default"
3801         SLIBPREF="cyg"
3802         SLIBSUF=".dll"
3803         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3804         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3805         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3806         SLIB_INSTALL_LINKS=
3807         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3808         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3809         objformat="win32"
3810         enable dos_paths
3811         ;;
3812     *-dos|freedos|opendos)
3813         network_extralibs="-lsocket"
3814         objformat="coff"
3815         enable dos_paths
3816         add_cppflags -U__STRICT_ANSI__
3817         ;;
3818     linux)
3819         enable dv1394
3820         enable section_data_rel_ro
3821         ;;
3822     irix*)
3823         target_os=irix
3824         ranlib="echo ignoring ranlib"
3825         ;;
3826     os/2*)
3827         ln_s="cp -f"
3828         objformat="aout"
3829         add_cppflags -D_GNU_SOURCE
3830         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3831         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3832         LIBSUF="_s.a"
3833         SLIBPREF=""
3834         SLIBSUF=".dll"
3835         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3836         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3837         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3838             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3839             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3840             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3841             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3842         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3843             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3844         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3845         enable dos_paths
3846         ;;
3847     gnu/kfreebsd)
3848         add_cppflags -D_BSD_SOURCE
3849         ;;
3850     gnu)
3851         ;;
3852     qnx)
3853         add_cppflags -D_QNX_SOURCE
3854         network_extralibs="-lsocket"
3855         ;;
3856     symbian)
3857         SLIBSUF=".dll"
3858         enable dos_paths
3859         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3860         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3861         add_ldflags -Wl,--target1-abs,--no-undefined \
3862                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3863                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3864         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3865                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3866                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3867         ;;
3868     osf1)
3869         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3870         ;;
3871     minix)
3872         ;;
3873     plan9)
3874         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3875                      -D_REENTRANT_SOURCE        \
3876                      -D_RESEARCH_SOURCE         \
3877                      -DFD_SETSIZE=96            \
3878                      -DHAVE_SOCK_OPTS
3879         add_compat strtod.o strtod=avpriv_strtod
3880         network_extralibs='-lbsd'
3881         exeobjs=compat/plan9/main.o
3882         cp_f='cp'
3883         ;;
3884     none)
3885         ;;
3886     *)
3887         die "Unknown OS '$target_os'."
3888         ;;
3889 esac
3890
3891 # determine libc flavour
3892
3893 probe_libc(){
3894     pfx=$1
3895     pfx_no_=${pfx%_}
3896     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3897     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3898         eval ${pfx}libc_type=uclibc
3899         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3900     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3901         eval ${pfx}libc_type=glibc
3902         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3903     # MinGW headers can be installed on Cygwin, so check for newlib first.
3904     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3905         eval ${pfx}libc_type=newlib
3906         add_${pfx}cppflags -U__STRICT_ANSI__
3907     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3908     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3909         eval ${pfx}libc_type=mingw64
3910         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3911         eval test \$${pfx_no_}cc_type = "gcc" &&
3912             add_${pfx}cppflags -D__printf__=__gnu_printf__
3913     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3914          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3915         eval ${pfx}libc_type=mingw32
3916         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3917             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3918             die "ERROR: MinGW32 runtime version must be >= 3.15."
3919         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3920         eval test \$${pfx_no_}cc_type = "gcc" &&
3921             add_${pfx}cppflags -D__printf__=__gnu_printf__
3922     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3923         eval ${pfx}libc_type=msvcrt
3924         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
3925             if [ "$pfx" = host_ ]; then
3926                 add_host_cppflags -Dsnprintf=_snprintf
3927             else
3928                 add_compat strtod.o strtod=avpriv_strtod
3929                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3930                                              _snprintf=avpriv_snprintf  \
3931                                              vsnprintf=avpriv_vsnprintf
3932             fi
3933         fi
3934         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3935         # 0x601 by default unless something else is set by the user.
3936         # This can easily lead to us detecting functions only present
3937         # in such new versions and producing binaries requiring windows 7.0.
3938         # Therefore explicitly set the default to XP unless the user has
3939         # set something else on the command line.
3940         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
3941         # family. For these cases, configure is free to use any functions
3942         # found in the SDK headers by default. (Alternatively, we could force
3943         # _WIN32_WINNT to 0x0602 in that case.)
3944         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3945             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
3946 #ifdef WINAPI_FAMILY
3947 #include <winapifamily.h>
3948 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
3949 #error not desktop
3950 #endif
3951 #endif
3952 EOF
3953     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3954         eval ${pfx}libc_type=klibc
3955     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3956         eval ${pfx}libc_type=bionic
3957     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3958         eval ${pfx}libc_type=solaris
3959         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3960     else
3961         eval ${pfx}libc_type=default
3962         add_${pfx}cppflags -D_DEFAULT_SOURCE
3963     fi
3964 }
3965
3966 probe_libc
3967 test -n "$libc_type" && enable libc_$libc_type
3968 probe_libc host_
3969 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3970
3971 case $libc_type in
3972     bionic)
3973         add_compat strtod.o strtod=avpriv_strtod
3974         ;;
3975 esac
3976
3977 # hacks for compiler/libc/os combinations
3978
3979 if enabled_all tms470 libc_glibc; then
3980     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3981     add_cppflags -D__USER_LABEL_PREFIX__=
3982     add_cppflags -D__builtin_memset=memset
3983     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3984     add_cflags   -pds=48    # incompatible redefinition of macro
3985 fi
3986
3987 if enabled_all ccc libc_glibc; then
3988     add_ldflags -Wl,-z,now  # calls to libots crash without this
3989 fi
3990
3991 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3992     add_cppflags '-I\$(SRC_PATH)/compat/float'
3993
3994 esc(){
3995     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3996 }
3997
3998 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3999
4000 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4001
4002 set_default $PATHS_LIST
4003 set_default nm
4004
4005 # we need to build at least one lib type
4006 if ! enabled_any static shared; then
4007     cat <<EOF
4008 At least one library type must be built.
4009 Specify --enable-static to build the static libraries or --enable-shared to
4010 build the shared libraries as well. To only build the shared libraries specify
4011 --disable-static in addition to --enable-shared.
4012 EOF
4013     exit 1;
4014 fi
4015
4016 die_license_disabled() {
4017     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4018 }
4019
4020 die_license_disabled gpl libcdio
4021 die_license_disabled gpl libx264
4022 die_license_disabled gpl libx265
4023 die_license_disabled gpl libxavs
4024 die_license_disabled gpl libxvid
4025 die_license_disabled gpl x11grab
4026
4027 die_license_disabled nonfree cuda
4028 die_license_disabled nonfree libfaac
4029 die_license_disabled nonfree libfdk_aac
4030 die_license_disabled nonfree libnpp
4031 die_license_disabled nonfree nvenc
4032 die_license_disabled nonfree openssl
4033
4034 die_license_disabled version3 libopencore_amrnb
4035 die_license_disabled version3 libopencore_amrwb
4036 die_license_disabled version3 libvo_aacenc
4037 die_license_disabled version3 libvo_amrwbenc
4038
4039 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4040
4041 disabled optimizations || check_cflags -fomit-frame-pointer
4042
4043 enable_weak_pic() {
4044     disabled pic && return
4045     enable pic
4046     add_cppflags -DPIC
4047     case "$target_os" in
4048     mingw*|cygwin*)
4049         ;;
4050     *)
4051         add_cflags -fPIC
4052         ;;
4053     esac
4054     add_asflags  -fPIC
4055 }
4056
4057 enabled pic && enable_weak_pic
4058
4059 check_cc <<EOF || die "Symbol mangling check failed."
4060 int ff_extern;
4061 EOF
4062 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4063 extern_prefix=${sym%%ff_extern*}
4064
4065 check_cc <<EOF && enable_weak inline_asm
4066 void foo(void) { __asm__ volatile ("" ::); }
4067 EOF
4068
4069 _restrict=
4070 for restrict_keyword in restrict __restrict__ __restrict; do
4071     check_cc <<EOF && _restrict=$restrict_keyword && break
4072 void foo(char * $restrict_keyword p);
4073 EOF
4074 done
4075
4076 check_cc <<EOF && enable pragma_deprecated
4077 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4078 EOF
4079
4080 check_cc <<EOF && enable attribute_packed
4081 struct { int x; } __attribute__((packed)) x;
4082 EOF
4083
4084 check_cc <<EOF && enable attribute_may_alias
4085 union { int x; } __attribute__((may_alias)) x;
4086 EOF
4087
4088 check_cc <<EOF || die "endian test failed"
4089 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4090 EOF
4091 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4092
4093 check_gas() {
4094     log "check_gas using '$as' as AS"
4095     # :vararg is used on aarch64, arm and ppc altivec
4096     check_as <<EOF || return 1
4097 .macro m n, y:vararg=0
4098 \n: .int \y
4099 .endm
4100 m x
4101 EOF
4102     # .altmacro is only used in arm asm
4103     ! enabled arm || check_as <<EOF || return 1
4104 .altmacro
4105 EOF
4106     enable gnu_as
4107     return 0
4108 }
4109
4110 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4111     nogas=:
4112     enabled_any arm aarch64 && nogas=die
4113     enabled_all ppc altivec && nogas=warn
4114     as_noop=-v
4115
4116     case $as_type in
4117         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4118         gcc)  gaspp_as_type=gas ;;
4119         *)    gaspp_as_type=$as_type ;;
4120     esac
4121
4122     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4123
4124     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4125         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4126
4127     if ! check_gas ; then
4128         as=${gas:=$as}
4129         check_gas || \
4130             $nogas "GNU assembler not found, install/update gas-preprocessor"
4131     fi
4132
4133     check_as <<EOF && enable as_func
4134 .func test
4135 .endfunc
4136 EOF
4137 fi
4138
4139 check_inline_asm inline_asm_labels '"1:\n"'
4140
4141 if enabled aarch64; then
4142     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4143     # internal assembler in clang 3.3 does not support this instruction
4144     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4145     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4146
4147     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4148
4149 elif enabled alpha; then
4150
4151     check_cflags -mieee
4152
4153 elif enabled arm; then
4154
4155     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4156     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4157     enabled thumb && check_cflags -mthumb || check_cflags -marm
4158
4159     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4160         enable vfp_args
4161     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4162         enable vfp_args
4163     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4164         case "${cross_prefix:-$cc}" in
4165             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4166             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4167 __asm__ (".eabi_attribute 28, 1");
4168 int main(void) { return 0; }
4169 EOF
4170         esac
4171         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4172     fi
4173
4174     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4175     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4176     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4177     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4178     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4179     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4180
4181     [ $target_os = linux ] || [ $target_os = android ] ||
4182         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4183             $ARCH_EXT_LIST_ARM
4184
4185     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4186
4187     check_as <<EOF && enable as_dn_directive
4188 ra .dn d0.i16
4189 .unreq ra
4190 EOF
4191
4192     # llvm's integrated assembler supports .object_arch from llvm 3.5
4193     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4194 .object_arch armv4
4195 EOF
4196
4197     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4198
4199 elif enabled mips; then
4200
4201     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4202
4203     # make sure that only an instruction set is enabled
4204     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4205
4206     if enabled mips64; then
4207         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4208             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4209                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4210     else
4211         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4212             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4213                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4214     fi
4215
4216 elif enabled parisc; then
4217
4218     if enabled gcc; then
4219         case $($cc -dumpversion) in
4220             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4221         esac
4222     fi
4223
4224 elif enabled ppc; then
4225
4226     enable local_aligned_8 local_aligned_16
4227
4228     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4229     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4230     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4231     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4232
4233     # AltiVec flags: The FSF version of GCC differs from the Apple version
4234     if enabled altivec; then
4235         check_cflags -maltivec -mabi=altivec &&
4236         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4237         check_cflags -faltivec
4238
4239         # check if our compiler supports Motorola AltiVec C API
4240         check_cc <<EOF || disable altivec
4241 $inc_altivec_h
4242 int main(void) {
4243     vector signed int v1 = (vector signed int) { 0 };
4244     vector signed int v2 = (vector signed int) { 1 };
4245     v1 = vec_add(v1, v2);
4246     return 0;
4247 }
4248 EOF
4249
4250         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4251     fi
4252
4253     if enabled vsx; then
4254         check_cflags -mvsx &&
4255         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4256     fi
4257
4258     if enabled power8; then
4259         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4260     fi
4261
4262 elif enabled x86; then
4263
4264     check_builtin rdtsc    intrin.h   "__rdtsc()"
4265     check_builtin mm_empty mmintrin.h "_mm_empty()"
4266
4267     enable local_aligned_8 local_aligned_16
4268
4269     # check whether EBP is available on x86
4270     # As 'i' is stored on the stack, this program will crash
4271     # if the base pointer is used to access it because the
4272     # base pointer is cleared in the inline assembly code.
4273     check_exec_crash <<EOF && enable ebp_available
4274 volatile int i=0;
4275 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4276 return i;
4277 EOF
4278
4279     # check whether EBX is available on x86
4280     check_inline_asm ebx_available '""::"b"(0)' &&
4281         check_inline_asm ebx_available '"":::"%ebx"'
4282
4283     # check whether xmm clobbers are supported
4284     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4285
4286     # check whether binutils is new enough to compile SSSE3/MMXEXT
4287     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4288     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4289
4290     if ! disabled_any asm mmx yasm; then
4291         if check_cmd $yasmexe --version; then
4292             enabled x86_64 && yasm_extra="-m amd64"
4293             yasm_debug="-g dwarf2"
4294         elif check_cmd nasm -v; then
4295             yasmexe=nasm
4296             yasm_debug="-g -F dwarf"
4297             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4298         fi
4299
4300         YASMFLAGS="-f $objformat $yasm_extra"
4301         enabled pic               && append YASMFLAGS "-DPIC"
4302         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4303         case "$objformat" in
4304             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4305         esac
4306
4307         check_yasm "movbe ecx, [5]" && enable yasm ||
4308             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4309         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4310         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4311         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4312         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4313         check_yasm "CPU amdnop" || disable cpunop
4314     fi
4315
4316     case "$cpu" in
4317         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4318             disable fast_clz
4319         ;;
4320     esac
4321
4322 fi
4323
4324 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4325
4326 check_ldflags -Wl,--as-needed
4327
4328 if check_func dlopen; then
4329     ldl=
4330 elif check_func dlopen -ldl; then
4331     ldl=-ldl
4332 fi
4333
4334 if ! disabled network; then
4335     check_func getaddrinfo $network_extralibs
4336     check_func inet_aton $network_extralibs
4337
4338     check_type netdb.h "struct addrinfo"
4339     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4340     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4341     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4342     check_type poll.h "struct pollfd"
4343     check_type netinet/sctp.h "struct sctp_event_subscribe"
4344     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4345     check_type netinet/in.h "struct sockaddr_in6"
4346     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4347     check_type "sys/types.h sys/socket.h" socklen_t
4348
4349     # Prefer arpa/inet.h over winsock2
4350     if check_header arpa/inet.h ; then
4351         check_func closesocket
4352     elif check_header winsock2.h ; then
4353         check_func_headers winsock2.h closesocket -lws2 &&
4354             network_extralibs="-lws2" ||
4355         { check_func_headers winsock2.h closesocket -lws2_32 &&
4356             network_extralibs="-lws2_32"; } || disable winsock2_h network
4357         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4358
4359         check_type ws2tcpip.h socklen_t
4360         check_type ws2tcpip.h "struct addrinfo"
4361         check_type ws2tcpip.h "struct group_source_req"
4362         check_type ws2tcpip.h "struct ip_mreq_source"
4363         check_type ws2tcpip.h "struct ipv6_mreq"
4364         check_type winsock2.h "struct pollfd"
4365         check_struct winsock2.h "struct sockaddr" sa_len
4366         check_type ws2tcpip.h "struct sockaddr_in6"
4367         check_type ws2tcpip.h "struct sockaddr_storage"
4368     else
4369         disable network
4370     fi
4371 fi
4372
4373 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4374 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4375 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4376 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4377
4378 case "$custom_allocator" in
4379     jemalloc)
4380         # jemalloc by default does not use a prefix
4381         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4382     ;;
4383     tcmalloc)
4384         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
4385         malloc_prefix=tc_
4386     ;;
4387 esac
4388
4389 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4390 check_func  ${malloc_prefix}memalign            && enable memalign
4391 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4392
4393 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4394     check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4395
4396 check_func  fcntl
4397 check_func  fork
4398 check_func  gethrtime
4399 check_func  getopt
4400 check_func  getrusage
4401 check_func  gettimeofday
4402 check_func  gmtime_r
4403 check_func  isatty
4404 check_func  localtime_r
4405 check_func  mach_absolute_time
4406 check_func  mkstemp
4407 check_func  mmap
4408 check_func  mprotect
4409 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4410 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4411 check_func  sched_getaffinity
4412 check_func  setrlimit
4413 check_func  strerror_r
4414 check_func  sysconf
4415 check_func  sysctl
4416 check_func  usleep
4417
4418 check_func_headers io.h setmode
4419 check_func_headers stdlib.h getenv
4420
4421 check_func_headers windows.h CoTaskMemFree -lole32
4422 check_func_headers windows.h GetProcessAffinityMask
4423 check_func_headers windows.h GetProcessTimes
4424 check_func_headers windows.h GetSystemTimeAsFileTime
4425 check_func_headers windows.h LoadLibrary
4426 check_func_headers windows.h MapViewOfFile
4427 check_func_headers windows.h SetConsoleTextAttribute
4428 check_func_headers windows.h Sleep
4429 check_func_headers windows.h VirtualAlloc
4430 check_struct windows.h "CONDITION_VARIABLE" Ptr
4431
4432 check_header direct.h
4433 check_header dlfcn.h
4434 check_header d3d11.h
4435 check_header dxva.h
4436 check_header dxva2api.h
4437 check_header io.h
4438 check_header mach/mach_time.h
4439 check_header malloc.h
4440 check_header poll.h
4441 check_header sys/mman.h
4442 check_header sys/param.h
4443 check_header sys/resource.h
4444 check_header sys/select.h
4445 check_header sys/time.h
4446 check_header sys/un.h
4447 check_header unistd.h
4448 check_header valgrind/valgrind.h
4449 check_header vdpau/vdpau.h
4450 check_header vdpau/vdpau_x11.h
4451 check_header VideoDecodeAcceleration/VDADecoder.h
4452 check_header windows.h
4453 check_header X11/extensions/XvMClib.h
4454
4455 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4456 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4457 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4458
4459 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4460
4461 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4462 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4463 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4464
4465 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4466
4467 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4468
4469 if ! disabled w32threads && ! enabled pthreads; then
4470     check_func_headers "windows.h process.h" _beginthreadex &&
4471         enable w32threads || disable w32threads
4472 fi
4473
4474 # check for some common methods of building with pthread support
4475 # do this before the optional library checks as some of them require pthreads
4476 if ! disabled pthreads && ! enabled w32threads; then
4477     enable pthreads
4478     if check_func pthread_join -pthread; then
4479         add_cflags -pthread
4480         add_extralibs -pthread
4481     elif check_func pthread_join -pthreads; then
4482         add_cflags -pthreads
4483         add_extralibs -pthreads
4484     elif check_func pthread_join -lpthreadGC2; then
4485         add_extralibs -lpthreadGC2
4486     elif check_lib pthread.h pthread_join -lpthread; then
4487         :
4488     elif ! check_func pthread_join; then
4489         disable pthreads
4490     fi
4491 fi
4492
4493 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4494 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4495
4496 check_lib math.h sin -lm && LIBM="-lm"
4497 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4498
4499 atan2f_args=2
4500 ldexpf_args=2
4501 powf_args=2
4502
4503 for func in $MATH_FUNCS; do
4504     eval check_mathfunc $func \${${func}_args:-1}
4505 done
4506
4507 # these are off by default, so fail if requested and not available
4508 enabled avisynth          && { check_lib2 "avisynth/avisynth_c.h windows.h" LoadLibrary ||
4509                                check_lib2 "avxsynth/avxsynth_c.h dlfcn.h" dlopen -ldl   ||
4510                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4511 enabled cuda              && check_lib cuda.h cuInit -lcuda
4512 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4513 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4514 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4515 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4516 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4517 enabled libfdk_aac        && require_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4518 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4519 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4520 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4521                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4522                                done || die "ERROR: libgsm not found"; }
4523 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4524 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4525 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
4526 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4527 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4528 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4529 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4530 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4531 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
4532 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4533                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4534 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4535 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4536 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4537 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4538 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
4539 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4540 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4541 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4542 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4543 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4544 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4545 enabled libvpx            && require_pkg_config "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version && {
4546     enabled libvpx_vp8_decoder && {
4547         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
4548             disable libvpx_vp8_decoder;
4549     }
4550     enabled libvpx_vp8_encoder && {
4551         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
4552             disable libvpx_vp8_encoder;
4553     }
4554     enabled libvpx_vp9_decoder && {
4555         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
4556             disable libvpx_vp9_decoder;
4557     }
4558     enabled libvpx_vp9_encoder && {
4559         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
4560             disable libvpx_vp9_encoder;
4561     }
4562     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
4563         die "libvpx enabled but no supported decoders found"
4564     fi
4565 }
4566 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4567 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4568 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4569                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4570                                die "ERROR: libx264 version must be >= 0.118."; } &&
4571                              { check_cpp_condition x264.h "X264_MPEG2" &&
4572                                enable libx262; }
4573 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
4574                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
4575                                die "ERROR: libx265 version must be >= 57."; }
4576 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4577 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4578 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4579                                 { ! enabled cross_compile && {
4580                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
4581                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
4582                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
4583                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
4584                                die "ERROR: mmal not found"; }
4585 enabled openssl           && { check_pkg_config openssl openssl/ssl.h SSL_library_init && {
4586                                add_cflags $openssl_cflags && add_extralibs $openssl_libs; }||
4587                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4588                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4589                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4590                                die "ERROR: openssl not found"; }
4591
4592 if enabled gnutls; then
4593     { check_lib2 gmp.h mpz_export -lgmp && enable gmp; } ||
4594     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4595 fi
4596
4597 # libdc1394 check
4598 if enabled libdc1394; then
4599     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
4600         enable libdc1394_2; } ||
4601     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4602         enable libdc1394_1; } ||
4603     die "ERROR: No version of libdc1394 found "
4604 fi
4605
4606 if enabled nvenc; then
4607     enabled cuda || check_header cuda.h || die "ERROR: cuda.h not found.";
4608     check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found.";
4609     check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 5" ||
4610         die "ERROR: NVENC API version 4 or older is not supported";
4611 fi
4612
4613 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4614     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4615     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4616     enable sdl
4617 fi
4618
4619 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4620 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4621
4622 check_header linux/fb.h
4623 check_header linux/videodev2.h
4624 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4625
4626 check_header AVFoundation/AVFoundation.h &&
4627     check_objcflags -fobjc-arc &&
4628     add_extralibs -framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia ||
4629     disable AVFoundation_AVFoundation_h
4630
4631 check_header sys/videoio.h
4632
4633 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4634 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4635 # w32api 3.12 had it defined wrong
4636 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4637
4638 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4639 { check_header dev/bktr/ioctl_meteor.h &&
4640   check_header dev/bktr/ioctl_bt848.h; } ||
4641 { check_header machine/ioctl_meteor.h &&
4642   check_header machine/ioctl_bt848.h; } ||
4643 { check_header dev/video/meteor/ioctl_meteor.h &&
4644   check_header dev/video/bktr/ioctl_bt848.h; } ||
4645 check_header dev/ic/bt8xx.h
4646
4647 check_header sndio.h
4648 check_header sys/soundcard.h
4649 check_header soundcard.h
4650
4651 enabled_any alsa_indev alsa_outdev &&
4652     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4653
4654 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4655     check_func jack_port_get_latency_range -ljack
4656
4657 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4658
4659 if enabled libcdio; then
4660     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4661     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4662     die "ERROR: No usable libcdio/cdparanoia found"
4663 fi
4664
4665 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4666
4667 if enabled libxcb || enabled x11grab && ! disabled libxcb; then
4668     check_pkg_config xcb-shape xcb/shape.h xcb_shape_rectangles || {
4669         enabled libxcb && die "ERROR: libxcb not found";
4670     } && disable x11grab && enable libxcb
4671
4672     disabled libxcb_shm ||
4673         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
4674             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
4675         } && check_header sys/shm.h && enable libxcb_shm
4676
4677     disabled libxcb_xfixes ||
4678         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
4679             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
4680         } && enable libxcb_xfixes
4681
4682     add_cflags "$xcb_event_cflags $xcb_shm_cflags $xcb_xfixes_cflags"
4683     add_extralibs "$xcb_event_libs $xcb_shm_libs $xcb_xfixes_libs"
4684 fi
4685
4686 if enabled x11grab; then
4687     enabled xlib || die "ERROR: Xlib not found"
4688     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
4689     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
4690 fi
4691
4692 enabled vaapi &&
4693     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
4694     disable vaapi
4695
4696 enabled vaapi && enabled xlib &&
4697     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
4698     enable vaapi_x11
4699
4700 enabled vdpau &&
4701     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4702     disable vdpau
4703
4704 enabled vdpau && enabled xlib &&
4705     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4706     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4707     enable vdpau_x11
4708
4709 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4710
4711 # add some useful compiler flags if supported
4712 check_cflags -Wdeclaration-after-statement
4713 check_cflags -Wall
4714 check_cflags -Wdisabled-optimization
4715 check_cflags -Wpointer-arith
4716 check_cflags -Wredundant-decls
4717 check_cflags -Wwrite-strings
4718 check_cflags -Wtype-limits
4719 check_cflags -Wundef
4720 check_cflags -Wmissing-prototypes
4721 check_cflags -Wstrict-prototypes
4722 enabled extra_warnings && check_cflags -Winline
4723 enabled extra_warnings && check_cflags -Wcast-qual
4724
4725 check_disable_warning(){
4726     warning_flag=-W${1#-Wno-}
4727     test_cflags $warning_flag && add_cflags $1
4728 }
4729
4730 check_disable_warning -Wno-parentheses
4731 check_disable_warning -Wno-switch
4732 check_disable_warning -Wno-format-zero-length
4733 check_disable_warning -Wno-pointer-sign
4734
4735 # add some linker flags
4736 check_ldflags -Wl,--warn-common
4737 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4738 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
4739 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4740
4741 # add some strip flags
4742 # -wN '..@*' is more selective than -x, but not available everywhere.
4743 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4744
4745 enabled neon_clobber_test &&
4746     check_ldflags -Wl,--wrap,avcodec_open2              \
4747                   -Wl,--wrap,avcodec_decode_audio4      \
4748                   -Wl,--wrap,avcodec_decode_video2      \
4749                   -Wl,--wrap,avcodec_decode_subtitle2   \
4750                   -Wl,--wrap,avcodec_encode_audio2      \
4751                   -Wl,--wrap,avcodec_encode_video2      \
4752                   -Wl,--wrap,avcodec_encode_subtitle    \
4753                   -Wl,--wrap,avresample_convert ||
4754     disable neon_clobber_test
4755
4756 enabled xmm_clobber_test &&
4757     check_ldflags -Wl,--wrap,avcodec_open2              \
4758                   -Wl,--wrap,avcodec_decode_audio4      \
4759                   -Wl,--wrap,avcodec_decode_video2      \
4760                   -Wl,--wrap,avcodec_decode_subtitle2   \
4761                   -Wl,--wrap,avcodec_encode_audio2      \
4762                   -Wl,--wrap,avcodec_encode_video2      \
4763                   -Wl,--wrap,avcodec_encode_subtitle    \
4764                   -Wl,--wrap,avresample_convert         \
4765                   -Wl,--wrap,sws_scale ||
4766     disable xmm_clobber_test
4767
4768 echo "X { local: *; };" > $TMPV
4769 if test_ldflags -Wl,--version-script,$TMPV; then
4770     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4771 elif test_ldflags -Wl,-M,$TMPV; then
4772     append SHFLAGS '-Wl,-M,\$(SUBDIR)lib\$(NAME).ver-sol2'
4773 fi
4774
4775 check_cc <<EOF && enable symver_asm_label
4776 void ff_foo(void) __asm__ ("av_foo@VERSION");
4777 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4778 EOF
4779     check_cc <<EOF && enable symver_gnu_asm
4780 __asm__(".symver ff_foo,av_foo@VERSION");
4781 void ff_foo(void) {}
4782 EOF
4783
4784 if [ -z "$optflags" ]; then
4785     if enabled small; then
4786         optflags=$cflags_size
4787     elif enabled optimizations; then
4788         optflags=$cflags_speed
4789     else
4790         optflags=$cflags_noopt
4791     fi
4792 fi
4793
4794 check_optflags(){
4795     check_cflags "$@"
4796     enabled lto && check_ldflags "$@"
4797 }
4798
4799
4800 if enabled lto; then
4801     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4802     check_cflags  -flto
4803     check_ldflags -flto $cpuflags
4804 fi
4805
4806 check_optflags $optflags
4807 check_optflags -fno-math-errno
4808 check_optflags -fno-signed-zeros
4809
4810 if enabled icc;