swfdec: support compressed swf
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89   --enable-rpath           use rpath when linking programs [USE WITH CARE]
90
91 Licensing options:
92   --enable-gpl             allow use of GPL code, the resulting libs
93                            and binaries will be under GPL [no]
94   --enable-version3        upgrade (L)GPL to version 3 [no]
95   --enable-nonfree         allow use of nonfree code, the resulting libs
96                            and binaries will be unredistributable [no]
97
98 Configuration options:
99   --disable-static         do not build static libraries [no]
100   --enable-shared          build shared libraries [no]
101   --enable-small           optimize for size instead of speed
102   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
103   --enable-gray            enable full grayscale support (slower color)
104   --disable-swscale-alpha  disable alpha channel support in swscale
105   --disable-all            disable building components, libraries and programs
106
107 Program options:
108   --disable-programs       do not build command line programs
109   --disable-avconv         disable avconv build
110   --disable-avplay         disable avplay build
111   --disable-avprobe        disable avprobe build
112   --disable-avserver       deprecated, does nothing
113
114 Component options:
115   --disable-doc            do not build documentation
116   --disable-avdevice       disable libavdevice build
117   --disable-avcodec        disable libavcodec build
118   --disable-avformat       disable libavformat build
119   --disable-avutil         disable libavutil build
120   --disable-swscale        disable libswscale build
121   --disable-avfilter       disable video filter support [no]
122   --disable-avresample     disable libavresample build [no]
123   --disable-pthreads       disable pthreads [auto]
124   --disable-w32threads     disable Win32 threads [auto]
125   --disable-network        disable network support [no]
126   --disable-dct            disable DCT code
127   --disable-error-resilience disable error resilience code
128   --disable-lsp            disable LSP code
129   --disable-lzo            disable LZO decoder code
130   --disable-mdct           disable MDCT code
131   --disable-rdft           disable RDFT code
132   --disable-fft            disable FFT code
133   --disable-faan           disable floating point AAN (I)DCT code
134
135 Hardware accelerators:
136   --enable-d3d11va         enable D3D11VA code
137   --enable-dxva2           enable DXVA2 code
138   --enable-vaapi           enable VAAPI code
139   --enable-vda             enable VDA code
140   --enable-vdpau           enable VDPAU code
141
142 Individual component options:
143   --disable-everything     disable all components listed below
144   --disable-encoder=NAME   disable encoder NAME
145   --enable-encoder=NAME    enable encoder NAME
146   --disable-encoders       disable all encoders
147   --disable-decoder=NAME   disable decoder NAME
148   --enable-decoder=NAME    enable decoder NAME
149   --disable-decoders       disable all decoders
150   --disable-hwaccel=NAME   disable hwaccel NAME
151   --enable-hwaccel=NAME    enable hwaccel NAME
152   --disable-hwaccels       disable all hwaccels
153   --disable-muxer=NAME     disable muxer NAME
154   --enable-muxer=NAME      enable muxer NAME
155   --disable-muxers         disable all muxers
156   --disable-demuxer=NAME   disable demuxer NAME
157   --enable-demuxer=NAME    enable demuxer NAME
158   --disable-demuxers       disable all demuxers
159   --enable-parser=NAME     enable parser NAME
160   --disable-parser=NAME    disable parser NAME
161   --disable-parsers        disable all parsers
162   --enable-bsf=NAME        enable bitstream filter NAME
163   --disable-bsf=NAME       disable bitstream filter NAME
164   --disable-bsfs           disable all bitstream filters
165   --enable-protocol=NAME   enable protocol NAME
166   --disable-protocol=NAME  disable protocol NAME
167   --disable-protocols      disable all protocols
168   --enable-indev=NAME      enable input device NAME
169   --disable-indev=NAME     disable input device NAME
170   --disable-indevs         disable input devices
171   --enable-outdev=NAME     enable output device NAME
172   --disable-outdev=NAME    disable output device NAME
173   --disable-outdevs        disable output devices
174   --disable-devices        disable all devices
175   --enable-filter=NAME     enable filter NAME
176   --disable-filter=NAME    disable filter NAME
177   --disable-filters        disable all filters
178
179 External library support:
180   --enable-avisynth        enable reading of AviSynth script files [no]
181   --enable-bzlib           enable bzlib [autodetect]
182   --enable-frei0r          enable frei0r video filtering
183   --enable-gnutls          enable gnutls [no]
184   --enable-libbs2b         enable bs2b DSP library [no]
185   --enable-libcdio         enable audio CD grabbing with libcdio
186   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
187                            and libraw1394 [no]
188   --enable-libdcadec       enable DCA decoding via libdcadec [no]
189   --enable-libfaac         enable AAC encoding via libfaac [no]
190   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
191   --enable-libfreetype     enable libfreetype [no]
192   --enable-libgsm          enable GSM de/encoding via libgsm [no]
193   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
194   --enable-libkvazaar      enable HEVC encoding via libkvazaar [no]
195   --enable-libmfx          enable HW acceleration through libmfx
196   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
197   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
198   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
199   --enable-libopencv       enable video filtering via libopencv [no]
200   --enable-libopenh264     enable H.264 encoding via OpenH264 [no]
201   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
202   --enable-libopus         enable Opus de/encoding via libopus [no]
203   --enable-libpulse        enable Pulseaudio input via libpulse [no]
204   --enable-librtmp         enable RTMP[E] support via librtmp [no]
205   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
206   --enable-libsnappy       enable Snappy compression [no]
207   --enable-libspeex        enable Speex de/encoding via libspeex [no]
208   --enable-libtheora       enable Theora encoding via libtheora [no]
209   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
210   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
211   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
212   --enable-libvorbis       enable Vorbis encoding via libvorbis [no]
213   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
214   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
215   --enable-libwebp         enable WebP encoding via libwebp [no]
216   --enable-libx264         enable H.264 encoding via x264 [no]
217   --enable-libx265         enable HEVC encoding via x265 [no]
218   --enable-libxavs         enable AVS encoding via xavs [no]
219   --enable-libxcb          enable X11 grabbing using XCB [no]
220   --enable-libxcb-shm      enable X11 grabbing shm communication [auto]
221   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [auto]
222   --enable-libxvid         enable Xvid encoding via xvidcore,
223                            native MPEG-4/Xvid encoder exists [no]
224   --enable-mmal            enable decoding via MMAL [no]
225   --enable-nvenc           enable encoding via NVENC [no]
226   --enable-openssl         enable openssl [no]
227   --enable-x11grab         enable X11 grabbing (legacy) [no]
228   --enable-zlib            enable zlib [autodetect]
229
230 Toolchain options:
231   --arch=ARCH              select architecture [$arch]
232   --cpu=CPU                select the minimum required CPU (affects
233                            instruction selection, may crash on older CPUs)
234   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
235   --enable-cross-compile   assume a cross-compiler is used
236   --sysroot=PATH           root of cross-build tree
237   --sysinclude=PATH        location of cross-build system headers
238   --target-os=OS           compiler targets OS [$target_os]
239   --target-exec=CMD        command to run executables on target
240   --target-path=DIR        path to view of build directory on target
241   --target-samples=DIR     path to samples directory on target
242   --toolchain=NAME         set tool defaults according to NAME
243   --nm=NM                  use nm tool
244   --ar=AR                  use archive tool AR [$ar_default]
245   --as=AS                  use assembler AS [$as_default]
246   --cc=CC                  use C compiler CC [$cc_default]
247   --objcc=OCC              use ObjC compiler OCC [$cc_default]
248   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
249   --ld=LD                  use linker LD
250   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
251   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
252   --host-cc=HOSTCC         use host C compiler HOSTCC
253   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
254   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
255   --host-ld=HOSTLD         use host linker HOSTLD
256   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
257   --host-libs=HLIBS        use libs HLIBS when linking for host
258   --host-os=OS             compiler host OS [$target_os]
259   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
260   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
261   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
262   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
263   --extra-libs=ELIBS       add ELIBS [$ELIBS]
264   --extra-version=STRING   version string suffix []
265   --optflags=OPTFLAGS      override optimization-related compiler flags
266   --build-suffix=SUFFIX    library name suffix []
267   --enable-pic             build position-independent code
268   --enable-thumb           compile for Thumb instruction set
269   --enable-lto             use link-time optimization
270   --env="ENV=override"     override the environment variables
271
272 Advanced options (experts only):
273   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
274   --custom-allocator=NAME  use a supported custom allocator
275   --disable-symver         disable symbol versioning
276   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
277   --disable-safe-bitstream-reader
278                            disable buffer boundary checking in bitreaders
279                            (faster, but may crash)
280   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
281   --enable-sram            allow use of on-chip SRAM
282
283 Optimization options (experts only):
284   --disable-asm            disable all assembly optimizations
285   --disable-altivec        disable AltiVec optimizations
286   --disable-vsx            disable VSX optimizations
287   --disable-power8         disable POWER8 optimizations
288   --disable-amd3dnow       disable 3DNow! optimizations
289   --disable-amd3dnowext    disable 3DNow! extended optimizations
290   --disable-mmx            disable MMX optimizations
291   --disable-mmxext         disable MMXEXT optimizations
292   --disable-sse            disable SSE optimizations
293   --disable-sse2           disable SSE2 optimizations
294   --disable-sse3           disable SSE3 optimizations
295   --disable-ssse3          disable SSSE3 optimizations
296   --disable-sse4           disable SSE4 optimizations
297   --disable-sse42          disable SSE4.2 optimizations
298   --disable-avx            disable AVX optimizations
299   --disable-xop            disable XOP optimizations
300   --disable-fma3           disable FMA3 optimizations
301   --disable-fma4           disable FMA4 optimizations
302   --disable-avx2           disable AVX2 optimizations
303   --disable-armv5te        disable armv5te optimizations
304   --disable-armv6          disable armv6 optimizations
305   --disable-armv6t2        disable armv6t2 optimizations
306   --disable-vfp            disable VFP optimizations
307   --disable-neon           disable NEON optimizations
308   --disable-inline-asm     disable use of inline assembly
309   --disable-yasm           disable use of nasm/yasm assembly
310
311 Developer options (useful when working on Libav itself):
312   --disable-debug          disable debugging symbols
313   --enable-debug=LEVEL     set the debug level [$debuglevel]
314   --disable-optimizations  disable compiler optimizations
315   --enable-extra-warnings  enable more compiler warnings
316   --samples=PATH           location of test samples for FATE, if not set use
317                            \$LIBAV_SAMPLES at make invocation time.
318   --enable-neon-clobber-test check NEON registers for clobbering (should be
319                            used only for debugging purposes)
320   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
321                            should be used only for debugging purposes)
322   --enable-random          randomly enable/disable components
323   --disable-random
324   --enable-random=LIST     randomly enable/disable specific components or
325   --disable-random=LIST    component groups. LIST is a comma-separated list
326                            of NAME[:PROB] entries where NAME is a component
327                            (group) and PROB the probability associated with
328                            NAME (default 0.5).
329   --random-seed=VALUE      seed value for --enable/disable-random
330   --disable-valgrind-backtrace do not print a backtrace under Valgrind
331                            (only applies to --disable-optimizations builds)
332
333 NOTE: Object files are built at the place where configure is launched.
334 EOF
335   exit 0
336 }
337
338 quotes='""'
339
340 log(){
341     echo "$@" >> $logfile
342 }
343
344 log_file(){
345     log BEGIN $1
346     i=1
347     while read line; do
348         printf '%5s   %s\n' "${i}" "${line}"
349         i=$(($i+1))
350     done < $1 >> $logfile
351     log END $1
352 }
353
354 echolog(){
355     log "$@"
356     echo "$@"
357 }
358
359 warn(){
360     log "WARNING: $*"
361     WARNINGS="${WARNINGS}WARNING: $*\n"
362 }
363
364 die(){
365     echolog "$@"
366     cat <<EOF
367
368 If you think configure made a mistake, make sure you are using the latest
369 version from Git.  If the latest version fails, report the problem to the
370 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
371 EOF
372     if disabled logging; then
373         cat <<EOF
374 Rerun configure with logging enabled (do not use --disable-logging), and
375 include the log this produces with your report.
376 EOF
377     else
378         cat <<EOF
379 Include the log file "$logfile" produced by configure as this will help
380 solving the problem.
381 EOF
382     fi
383     exit 1
384 }
385
386 # Avoid locale weirdness, besides we really just want to translate ASCII.
387 toupper(){
388     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
389 }
390
391 tolower(){
392     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
393 }
394
395 c_escape(){
396     echo "$*" | sed 's/["\\]/\\\0/g'
397 }
398
399 sh_quote(){
400     v=$(echo "$1" | sed "s/'/'\\\\''/g")
401     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
402     echo "$v"
403 }
404
405 cleanws(){
406     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
407 }
408
409 filter(){
410     pat=$1
411     shift
412     for v; do
413         eval "case $v in $pat) echo $v ;; esac"
414     done
415 }
416
417 filter_out(){
418     pat=$1
419     shift
420     for v; do
421         eval "case $v in $pat) ;; *) echo $v ;; esac"
422     done
423 }
424
425 map(){
426     m=$1
427     shift
428     for v; do eval $m; done
429 }
430
431 add_suffix(){
432     suffix=$1
433     shift
434     for v; do echo ${v}${suffix}; done
435 }
436
437 set_all(){
438     value=$1
439     shift
440     for var in $*; do
441         eval $var=$value
442     done
443 }
444
445 set_weak(){
446     value=$1
447     shift
448     for var; do
449         eval : \${$var:=$value}
450     done
451 }
452
453 sanitize_var_name(){
454     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
455 }
456
457 set_safe(){
458     var=$1
459     shift
460     eval $(sanitize_var_name "$var")='$*'
461 }
462
463 get_safe(){
464     eval echo \$$(sanitize_var_name "$1")
465 }
466
467 pushvar(){
468     for pvar in $*; do
469         eval level=\${${pvar}_level:=0}
470         eval ${pvar}_${level}="\$$pvar"
471         eval ${pvar}_level=$(($level+1))
472     done
473 }
474
475 popvar(){
476     for pvar in $*; do
477         eval level=\${${pvar}_level:-0}
478         test $level = 0 && continue
479         eval level=$(($level-1))
480         eval $pvar="\${${pvar}_${level}}"
481         eval ${pvar}_level=$level
482         eval unset ${pvar}_${level}
483     done
484 }
485
486 enable(){
487     set_all yes $*
488 }
489
490 disable(){
491     set_all no $*
492 }
493
494 enable_weak(){
495     set_weak yes $*
496 }
497
498 disable_weak(){
499     set_weak no $*
500 }
501
502 enable_safe(){
503     for var; do
504         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
505     done
506 }
507
508 disable_safe(){
509     for var; do
510         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
511     done
512 }
513
514 do_enable_deep(){
515     for var; do
516         enabled $var && continue
517         eval sel="\$${var}_select"
518         eval sgs="\$${var}_suggest"
519         pushvar var sgs
520         enable_deep $sel
521         popvar sgs
522         enable_deep_weak $sgs
523         popvar var
524     done
525 }
526
527 enable_deep(){
528     do_enable_deep $*
529     enable $*
530 }
531
532 enable_deep_weak(){
533     for var; do
534         disabled $var && continue
535         pushvar var
536         do_enable_deep $var
537         popvar var
538         enable_weak $var
539     done
540 }
541
542 enabled(){
543     test "${1#!}" = "$1" && op== || op=!=
544     eval test "x\$${1#!}" $op "xyes"
545 }
546
547 disabled(){
548     test "${1#!}" = "$1" && op== || op=!=
549     eval test "x\$${1#!}" $op "xno"
550 }
551
552 enabled_all(){
553     for opt; do
554         enabled $opt || return 1
555     done
556 }
557
558 disabled_all(){
559     for opt; do
560         disabled $opt || return 1
561     done
562 }
563
564 enabled_any(){
565     for opt; do
566         enabled $opt && return 0
567     done
568 }
569
570 disabled_any(){
571     for opt; do
572         disabled $opt && return 0
573     done
574     return 1
575 }
576
577 set_default(){
578     for opt; do
579         eval : \${$opt:=\$${opt}_default}
580     done
581 }
582
583 is_in(){
584     value=$1
585     shift
586     for var in $*; do
587         [ $var = $value ] && return 0
588     done
589     return 1
590 }
591
592 do_check_deps(){
593     for cfg; do
594         cfg="${cfg#!}"
595         enabled ${cfg}_checking && die "Circular dependency for $cfg."
596         disabled ${cfg}_checking && continue
597         enable ${cfg}_checking
598         append allopts $cfg
599
600         eval dep_all="\$${cfg}_deps"
601         eval dep_any="\$${cfg}_deps_any"
602         eval dep_sel="\$${cfg}_select"
603         eval dep_sgs="\$${cfg}_suggest"
604         eval dep_ifa="\$${cfg}_if"
605         eval dep_ifn="\$${cfg}_if_any"
606
607         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
608         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
609         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
610
611         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
612         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
613         enabled_all  $dep_all || disable $cfg
614         enabled_any  $dep_any || disable $cfg
615         disabled_any $dep_sel && disable $cfg
616
617         if enabled $cfg; then
618             enable_deep $dep_sel
619             enable_deep_weak $dep_sgs
620         fi
621
622         disable ${cfg}_checking
623     done
624 }
625
626 check_deps(){
627     unset allopts
628
629     do_check_deps "$@"
630
631     for cfg in $allopts; do
632         enabled $cfg || continue
633         eval dep_extralibs="\$${cfg}_extralibs"
634         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
635     done
636 }
637
638 print_config(){
639     pfx=$1
640     files=$2
641     shift 2
642     map 'eval echo "$v \${$v:-no}"' "$@" |
643     awk "BEGIN { split(\"$files\", files) }
644         {
645             c = \"$pfx\" toupper(\$1);
646             v = \$2;
647             sub(/yes/, 1, v);
648             sub(/no/,  0, v);
649             for (f in files) {
650                 file = files[f];
651                 if (file ~ /\\.h\$/) {
652                     printf(\"#define %s %d\\n\", c, v) >>file;
653                 } else if (file ~ /\\.asm\$/) {
654                     printf(\"%%define %s %d\\n\", c, v) >>file;
655                 } else if (file ~ /\\.mak\$/) {
656                     n = -v ? \"\" : \"!\";
657                     printf(\"%s%s=yes\\n\", n, c) >>file;
658                 }
659             }
660         }"
661 }
662
663 print_enabled(){
664     suf=$1
665     shift
666     for v; do
667         enabled $v && printf "%s\n" ${v%$suf};
668     done
669 }
670
671 append(){
672     var=$1
673     shift
674     eval "$var=\"\$$var $*\""
675 }
676
677 prepend(){
678     var=$1
679     shift
680     eval "$var=\"$* \$$var\""
681 }
682
683 unique(){
684     var=$1
685     uniq_list=""
686     for tok in $(eval echo \$$var); do
687         uniq_list="$(filter_out $tok $uniq_list) $tok"
688     done
689     eval "$var=\"${uniq_list}\""
690 }
691
692 add_cppflags(){
693     append CPPFLAGS "$@"
694 }
695
696 add_cflags(){
697     append CFLAGS $($cflags_filter "$@")
698 }
699
700 add_asflags(){
701     append ASFLAGS $($asflags_filter "$@")
702 }
703
704 add_objcflags(){
705     append OBJCFLAGS $($objcflags_filter "$@")
706 }
707
708 add_ldflags(){
709     append LDFLAGS $($ldflags_filter "$@")
710 }
711
712 add_ldexeflags(){
713     append LDEXEFLAGS $($ldflags_filter "$@")
714 }
715
716 add_stripflags(){
717     append STRIPFLAGS "$@"
718 }
719
720 add_extralibs(){
721     prepend extralibs $($ldflags_filter "$@")
722 }
723
724 add_host_cppflags(){
725     append host_cppflags "$@"
726 }
727
728 add_host_cflags(){
729     append host_cflags $($host_cflags_filter "$@")
730 }
731
732 add_host_ldflags(){
733     append host_ldflags $($host_ldflags_filter "$@")
734 }
735
736 add_compat(){
737     append compat_objs $1
738     shift
739     map 'add_cppflags -D$v' "$@"
740 }
741
742 check_cmd(){
743     log "$@"
744     "$@" >> $logfile 2>&1
745 }
746
747 cc_o(){
748     eval printf '%s\\n' $CC_O
749 }
750
751 cc_e(){
752     eval printf '%s\\n' $CC_E
753 }
754
755 check_cc(){
756     log check_cc "$@"
757     cat > $TMPC
758     log_file $TMPC
759     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
760 }
761
762 check_objcc(){
763     log check_objcc "$@"
764     cat > $TMPC
765     log_file $TMPC
766     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
767 }
768
769 check_cpp(){
770     log check_cpp "$@"
771     cat > $TMPC
772     log_file $TMPC
773     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
774 }
775
776 as_o(){
777     eval printf '%s\\n' $AS_O
778 }
779
780 check_as(){
781     log check_as "$@"
782     cat > $TMPS
783     log_file $TMPS
784     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
785 }
786
787 check_inline_asm(){
788     log check_inline_asm "$@"
789     name="$1"
790     code="$2"
791     shift 2
792     disable $name
793     check_cc "$@" <<EOF && enable $name
794 void foo(void){ __asm__ volatile($code); }
795 EOF
796 }
797
798 check_insn(){
799     log check_insn "$@"
800     check_inline_asm ${1}_inline "\"$2\""
801     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
802 }
803
804 check_yasm(){
805     log check_yasm "$@"
806     echo "$1" > $TMPS
807     log_file $TMPS
808     shift 1
809     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
810 }
811
812 ld_o(){
813     eval printf '%s\\n' $LD_O
814 }
815
816 check_ld(){
817     log check_ld "$@"
818     flags=$(filter_out '-l*' "$@")
819     libs=$(filter '-l*' "$@")
820     check_cc $($cflags_filter $flags) || return
821     flags=$($ldflags_filter $flags)
822     libs=$($ldflags_filter $libs)
823     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
824 }
825
826 print_include(){
827     hdr=$1
828     test "${hdr%.h}" = "${hdr}" &&
829         echo "#include $hdr"    ||
830         echo "#include <$hdr>"
831 }
832
833 check_code(){
834     log check_code "$@"
835     check=$1
836     headers=$2
837     code=$3
838     shift 3
839     {
840         for hdr in $headers; do
841             print_include $hdr
842         done
843         echo "int main(void) { $code; return 0; }"
844     } | check_$check "$@"
845 }
846
847 check_cppflags(){
848     log check_cppflags "$@"
849     check_cc "$@" <<EOF && append CPPFLAGS "$@"
850 int x;
851 EOF
852 }
853
854 test_cflags(){
855     log test_cflags "$@"
856     set -- $($cflags_filter "$@")
857     check_cc "$@" <<EOF
858 int x;
859 EOF
860 }
861
862 check_cflags(){
863     log check_cflags "$@"
864     test_cflags "$@" && add_cflags "$@"
865 }
866
867 test_objcflags(){
868     log test_cflags "$@"
869     set -- $($cflags_filter "$@")
870     check_objcc "$@" <<EOF
871 int x;
872 EOF
873 }
874
875 check_objcflags(){
876     log check_cflags "$@"
877     test_objcflags "$@" && add_objcflags "$@"
878 }
879
880 test_ldflags(){
881     log test_ldflags "$@"
882     check_ld "$@" <<EOF
883 int main(void){ return 0; }
884 EOF
885 }
886
887 check_ldflags(){
888     log check_ldflags "$@"
889     test_ldflags "$@" && add_ldflags "$@"
890 }
891
892 test_stripflags(){
893     log test_stripflags "$@"
894     # call check_cc to get a fresh TMPO
895     check_cc <<EOF
896 int main(void) { return 0; }
897 EOF
898     check_cmd $strip $STRIPFLAGS "$@" $TMPO
899 }
900
901 check_stripflags(){
902     log check_stripflags "$@"
903     test_stripflags "$@" && add_stripflags "$@"
904 }
905
906 check_header(){
907     log check_header "$@"
908     header=$1
909     shift
910     disable_safe $header
911     check_cpp "$@" <<EOF && enable_safe $header
912 #include <$header>
913 int x;
914 EOF
915 }
916
917 check_func(){
918     log check_func "$@"
919     func=$1
920     shift
921     disable $func
922     check_ld "$@" <<EOF && enable $func
923 extern int $func();
924 int main(void){ $func(); }
925 EOF
926 }
927
928 check_mathfunc(){
929     log check_mathfunc "$@"
930     func=$1
931     narg=$2
932     shift 2
933     test $narg = 2 && args="f, g" || args="f"
934     disable $func
935     check_ld "$@" <<EOF && enable $func
936 #include <math.h>
937 float foo(float f, float g) { return $func($args); }
938 int main(void){ return 0; }
939 EOF
940 }
941
942 check_func_headers(){
943     log check_func_headers "$@"
944     headers=$1
945     funcs=$2
946     shift 2
947     {
948         for hdr in $headers; do
949             print_include $hdr
950         done
951         for func in $funcs; do
952             echo "long check_$func(void) { return (long) $func; }"
953         done
954         echo "int main(void) { return 0; }"
955     } | check_ld "$@" && enable $funcs && enable_safe $headers
956 }
957
958 check_cpp_condition(){
959     log check_cpp_condition "$@"
960     header=$1
961     condition=$2
962     shift 2
963     check_cpp "$@" <<EOF
964 #include <$header>
965 #if !($condition)
966 #error "unsatisfied condition: $condition"
967 #endif
968 EOF
969 }
970
971 check_lib(){
972     log check_lib "$@"
973     header="$1"
974     func="$2"
975     shift 2
976     check_header $header && check_func $func "$@" && add_extralibs "$@"
977 }
978
979 check_lib2(){
980     log check_lib2 "$@"
981     headers="$1"
982     funcs="$2"
983     shift 2
984     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
985 }
986
987 check_pkg_config(){
988     log check_pkg_config "$@"
989     pkg="$1"
990     headers="$2"
991     funcs="$3"
992     shift 3
993     check_cmd $pkg_config --exists --print-errors $pkg || return
994     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
995     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
996     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
997         set_safe "${pkg}_cflags" $pkg_cflags   &&
998         set_safe "${pkg}_libs"   $pkg_libs
999 }
1000
1001 check_exec(){
1002     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1003 }
1004
1005 check_exec_crash(){
1006     code=$(cat)
1007
1008     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1009     # are safe but may not be available everywhere.  Thus we use
1010     # raise(SIGTERM) instead.  The check is run in a subshell so we
1011     # can redirect the "Terminated" message from the shell.  SIGBUS
1012     # is not defined by standard C so it is used conditionally.
1013
1014     (check_exec "$@") >> $logfile 2>&1 <<EOF
1015 #include <signal.h>
1016 static void sighandler(int sig){
1017     raise(SIGTERM);
1018 }
1019 int foo(void){
1020     $code
1021 }
1022 int (*func_ptr)(void) = foo;
1023 int main(void){
1024     signal(SIGILL, sighandler);
1025     signal(SIGFPE, sighandler);
1026     signal(SIGSEGV, sighandler);
1027 #ifdef SIGBUS
1028     signal(SIGBUS, sighandler);
1029 #endif
1030     return func_ptr();
1031 }
1032 EOF
1033 }
1034
1035 check_type(){
1036     log check_type "$@"
1037     headers=$1
1038     type=$2
1039     shift 2
1040     disable_safe "$type"
1041     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1042 }
1043
1044 check_struct(){
1045     log check_struct "$@"
1046     headers=$1
1047     struct=$2
1048     member=$3
1049     shift 3
1050     disable_safe "${struct}_${member}"
1051     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1052         enable_safe "${struct}_${member}"
1053 }
1054
1055 check_builtin(){
1056     log check_builtin "$@"
1057     name=$1
1058     headers=$2
1059     builtin=$3
1060     shift 3
1061     disable "$name"
1062     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1063 }
1064
1065 check_compile_assert(){
1066     log check_compile_assert "$@"
1067     name=$1
1068     headers=$2
1069     condition=$3
1070     shift 3
1071     disable "$name"
1072     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1073 }
1074
1075 require(){
1076     name="$1"
1077     header="$2"
1078     func="$3"
1079     shift 3
1080     check_lib $header $func "$@" || die "ERROR: $name not found"
1081 }
1082
1083 require2(){
1084     name="$1"
1085     headers="$2"
1086     func="$3"
1087     shift 3
1088     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1089 }
1090
1091 require_pkg_config(){
1092     pkg="$1"
1093     check_pkg_config "$@" || die "ERROR: $pkg not found"
1094     add_cflags    $(get_safe "${pkg}_cflags")
1095     add_extralibs $(get_safe "${pkg}_libs")
1096 }
1097
1098 hostcc_e(){
1099     eval printf '%s\\n' $HOSTCC_E
1100 }
1101
1102 hostcc_o(){
1103     eval printf '%s\\n' $HOSTCC_O
1104 }
1105
1106 check_host_cc(){
1107     log check_host_cc "$@"
1108     cat > $TMPC
1109     log_file $TMPC
1110     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1111 }
1112
1113 check_host_cpp(){
1114     log check_host_cpp "$@"
1115     cat > $TMPC
1116     log_file $TMPC
1117     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1118 }
1119
1120 check_host_cppflags(){
1121     log check_host_cppflags "$@"
1122     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1123 int x;
1124 EOF
1125 }
1126
1127 check_host_cflags(){
1128     log check_host_cflags "$@"
1129     set -- $($host_cflags_filter "$@")
1130     check_host_cc "$@" <<EOF && append host_cflags "$@"
1131 int x;
1132 EOF
1133 }
1134
1135 check_host_cpp_condition(){
1136     log check_host_cpp_condition "$@"
1137     header=$1
1138     condition=$2
1139     shift 2
1140     check_host_cpp "$@" <<EOF
1141 #include <$header>
1142 #if !($condition)
1143 #error "unsatisfied condition: $condition"
1144 #endif
1145 EOF
1146 }
1147
1148 apply(){
1149     file=$1
1150     shift
1151     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1152 }
1153
1154 cp_if_changed(){
1155     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1156     mkdir -p "$(dirname $2)"
1157     $cp_f "$1" "$2"
1158 }
1159
1160 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1161 # system-dependent things.
1162
1163 AVCODEC_COMPONENTS="
1164     bsfs
1165     decoders
1166     encoders
1167     hwaccels
1168     parsers
1169 "
1170
1171 AVDEVICE_COMPONENTS="
1172     indevs
1173     outdevs
1174 "
1175 AVFILTER_COMPONENTS="
1176     filters
1177 "
1178 AVFORMAT_COMPONENTS="
1179     demuxers
1180     muxers
1181     protocols
1182 "
1183
1184 AVRESAMPLE_COMPONENTS=""
1185 AVUTIL_COMPONENTS=""
1186
1187 COMPONENT_LIST="
1188     $AVCODEC_COMPONENTS
1189     $AVDEVICE_COMPONENTS
1190     $AVFILTER_COMPONENTS
1191     $AVFORMAT_COMPONENTS
1192     $AVRESAMPLE_COMPONENTS
1193     $AVUTIL_COMPONENTS
1194 "
1195
1196 EXAMPLE_LIST="
1197     avcodec_example
1198     filter_audio_example
1199     metadata_example
1200     output_example
1201     qsvdec_example
1202     transcode_aac_example
1203 "
1204
1205 EXTERNAL_LIBRARY_LIST="
1206     avisynth
1207     bzlib
1208     frei0r
1209     gnutls
1210     libbs2b
1211     libcdio
1212     libdc1394
1213     libdcadec
1214     libfaac
1215     libfdk_aac
1216     libfontconfig
1217     libfreetype
1218     libgsm
1219     libilbc
1220     libkvazaar
1221     libmfx
1222     libmp3lame
1223     libopencore_amrnb
1224     libopencore_amrwb
1225     libopencv
1226     libopenh264
1227     libopenjpeg
1228     libopus
1229     libpulse
1230     librtmp
1231     libschroedinger
1232     libsnappy
1233     libspeex
1234     libtheora
1235     libtwolame
1236     libvo_aacenc
1237     libvo_amrwbenc
1238     libvorbis
1239     libvpx
1240     libwavpack
1241     libwebp
1242     libx264
1243     libx265
1244     libxavs
1245     libxcb
1246     libxcb_shm
1247     libxcb_xfixes
1248     libxvid
1249     mmal
1250     nvenc
1251     openssl
1252     x11grab
1253     zlib
1254 "
1255
1256 FEATURE_LIST="
1257     gray
1258     hardcoded_tables
1259     runtime_cpudetect
1260     safe_bitstream_reader
1261     shared
1262     small
1263     sram
1264     static
1265     swscale_alpha
1266 "
1267
1268 HWACCEL_LIST="
1269     d3d11va
1270     dxva2
1271     vaapi
1272     vda
1273     vdpau
1274 "
1275
1276 LIBRARY_LIST="
1277     avcodec
1278     avdevice
1279     avfilter
1280     avformat
1281     avresample
1282     avutil
1283     swscale
1284 "
1285
1286 LICENSE_LIST="
1287     gpl
1288     nonfree
1289     version3
1290 "
1291
1292 PROGRAM_LIST="
1293     avconv
1294     avplay
1295     avprobe
1296 "
1297
1298 SUBSYSTEM_LIST="
1299     dct
1300     doc
1301     error_resilience
1302     faan
1303     fft
1304     lsp
1305     lzo
1306     mdct
1307     network
1308     rdft
1309 "
1310
1311 CONFIG_LIST="
1312     $COMPONENT_LIST
1313     $EXAMPLE_LIST
1314     $EXTERNAL_LIBRARY_LIST
1315     $FEATURE_LIST
1316     $HWACCEL_LIST
1317     $LICENSE_LIST
1318     $LIBRARY_LIST
1319     $PROGRAM_LIST
1320     $SUBSYSTEM_LIST
1321     memalign_hack
1322     neon_clobber_test
1323     pic
1324     pod2man
1325     texi2html
1326     thumb
1327     valgrind_backtrace
1328     xmm_clobber_test
1329 "
1330
1331 THREADS_LIST="
1332     pthreads
1333     w32threads
1334 "
1335
1336 ATOMICS_LIST="
1337     atomics_gcc
1338     atomics_suncc
1339     atomics_win32
1340 "
1341
1342 ARCH_LIST="
1343     aarch64
1344     alpha
1345     arm
1346     avr32
1347     avr32_ap
1348     avr32_uc
1349     bfin
1350     ia64
1351     m68k
1352     mips
1353     mips64
1354     parisc
1355     ppc
1356     ppc64
1357     s390
1358     sh4
1359     sparc
1360     sparc64
1361     tilegx
1362     tilepro
1363     tomi
1364     x86
1365     x86_32
1366     x86_64
1367 "
1368
1369 ARCH_EXT_LIST_ARM="
1370     armv5te
1371     armv6
1372     armv6t2
1373     armv8
1374     neon
1375     vfp
1376     vfpv3
1377 "
1378
1379 ARCH_EXT_LIST_X86_SIMD="
1380     amd3dnow
1381     amd3dnowext
1382     avx
1383     avx2
1384     fma3
1385     fma4
1386     mmx
1387     mmxext
1388     sse
1389     sse2
1390     sse3
1391     sse4
1392     sse42
1393     ssse3
1394     xop
1395 "
1396
1397 ARCH_EXT_LIST_PPC="
1398     altivec
1399     dcbzl
1400     ldbrx
1401     power8
1402     ppc4xx
1403     vsx
1404 "
1405
1406 ARCH_EXT_LIST_X86="
1407     $ARCH_EXT_LIST_X86_SIMD
1408     cpunop
1409     i686
1410 "
1411
1412 ARCH_EXT_LIST_MIPS="
1413     loongson
1414     mips32r1
1415     mips64r1
1416     mips32r2
1417     mips64r2
1418     mips32r6
1419     mips64r6
1420 "
1421
1422 ARCH_EXT_LIST="
1423     $ARCH_EXT_LIST_ARM
1424     $ARCH_EXT_LIST_MIPS
1425     $ARCH_EXT_LIST_PPC
1426     $ARCH_EXT_LIST_X86
1427     vis
1428 "
1429
1430 ARCH_FEATURES="
1431     aligned_stack
1432     fast_64bit
1433     fast_clz
1434     fast_cmov
1435     local_aligned_8
1436     local_aligned_16
1437     simd_align_16
1438 "
1439
1440 BUILTIN_LIST="
1441     atomic_cas_ptr
1442     machine_rw_barrier
1443     MemoryBarrier
1444     mm_empty
1445     rdtsc
1446     sync_val_compare_and_swap
1447 "
1448 HAVE_LIST_CMDLINE="
1449     inline_asm
1450     symver
1451     yasm
1452 "
1453
1454 HAVE_LIST_PUB="
1455     bigendian
1456     fast_unaligned
1457 "
1458
1459 HEADERS_LIST="
1460     AVFoundation_AVFoundation_h
1461     alsa_asoundlib_h
1462     altivec_h
1463     arpa_inet_h
1464     cdio_paranoia_h
1465     cdio_paranoia_paranoia_h
1466     dev_bktr_ioctl_bt848_h
1467     dev_bktr_ioctl_meteor_h
1468     dev_ic_bt8xx_h
1469     dev_video_bktr_ioctl_bt848_h
1470     dev_video_meteor_ioctl_meteor_h
1471     direct_h
1472     dlfcn_h
1473     d3d11_h
1474     dxva_h
1475     gsm_h
1476     io_h
1477     mach_mach_time_h
1478     machine_ioctl_bt848_h
1479     machine_ioctl_meteor_h
1480     malloc_h
1481     poll_h
1482     sndio_h
1483     soundcard_h
1484     sys_mman_h
1485     sys_param_h
1486     sys_resource_h
1487     sys_select_h
1488     sys_soundcard_h
1489     sys_time_h
1490     sys_un_h
1491     sys_videoio_h
1492     unistd_h
1493     valgrind_valgrind_h
1494     windows_h
1495     winsock2_h
1496 "
1497
1498 INTRINSICS_LIST="
1499     intrinsics_neon
1500 "
1501
1502 MATH_FUNCS="
1503     atanf
1504     atan2f
1505     cbrtf
1506     cosf
1507     exp2
1508     exp2f
1509     expf
1510     isinf
1511     isnan
1512     ldexpf
1513     llrint
1514     llrintf
1515     log2
1516     log2f
1517     log10f
1518     lrint
1519     lrintf
1520     powf
1521     rint
1522     round
1523     roundf
1524     sinf
1525     trunc
1526     truncf
1527 "
1528
1529 SYSTEM_FUNCS="
1530     aligned_malloc
1531     clock_gettime
1532     closesocket
1533     CommandLineToArgvW
1534     CoTaskMemFree
1535     CryptGenRandom
1536     dlopen
1537     fcntl
1538     flt_lim
1539     fork
1540     getaddrinfo
1541     gethrtime
1542     getopt
1543     GetProcessAffinityMask
1544     GetProcessMemoryInfo
1545     GetProcessTimes
1546     getrusage
1547     GetSystemTimeAsFileTime
1548     gettimeofday
1549     gmtime_r
1550     inet_aton
1551     isatty
1552     jack_port_get_latency_range
1553     LoadLibrary
1554     localtime_r
1555     mach_absolute_time
1556     MapViewOfFile
1557     memalign
1558     mkstemp
1559     mmap
1560     mprotect
1561     nanosleep
1562     posix_memalign
1563     sched_getaffinity
1564     SetConsoleTextAttribute
1565     setmode
1566     setrlimit
1567     Sleep
1568     strerror_r
1569     sysconf
1570     sysctl
1571     usleep
1572     VirtualAlloc
1573 "
1574
1575 TOOLCHAIN_FEATURES="
1576     as_dn_directive
1577     as_func
1578     as_object_arch
1579     asm_mod_q
1580     attribute_may_alias
1581     attribute_packed
1582     ebp_available
1583     ebx_available
1584     gnu_as
1585     ibm_asm
1586     inline_asm_labels
1587     pragma_deprecated
1588     symver_asm_label
1589     symver_gnu_asm
1590     vfp_args
1591     xform_asm
1592     xmm_clobbers
1593 "
1594
1595 TYPES_LIST="
1596     CONDITION_VARIABLE_Ptr
1597     socklen_t
1598     struct_addrinfo
1599     struct_group_source_req
1600     struct_ip_mreq_source
1601     struct_ipv6_mreq
1602     struct_pollfd
1603     struct_rusage_ru_maxrss
1604     struct_sockaddr_in6
1605     struct_sockaddr_sa_len
1606     struct_sockaddr_storage
1607     struct_v4l2_frmivalenum_discrete
1608 "
1609
1610 HAVE_LIST="
1611     $ARCH_EXT_LIST
1612     $(add_suffix _external $ARCH_EXT_LIST)
1613     $(add_suffix _inline   $ARCH_EXT_LIST)
1614     $ARCH_FEATURES
1615     $ATOMICS_LIST
1616     $BUILTIN_LIST
1617     $HAVE_LIST_CMDLINE
1618     $HAVE_LIST_PUB
1619     $HEADERS_LIST
1620     $INTRINSICS_LIST
1621     $MATH_FUNCS
1622     $SYSTEM_FUNCS
1623     $THREADS_LIST
1624     $TOOLCHAIN_FEATURES
1625     $TYPES_LIST
1626     atomics_native
1627     dos_paths
1628     dxva2_lib
1629     libc_msvcrt
1630     libdc1394_1
1631     libdc1394_2
1632     sdl
1633     section_data_rel_ro
1634     threads
1635     vaapi_x11
1636     vdpau_x11
1637     xlib
1638 "
1639
1640 # options emitted with CONFIG_ prefix but not available on the command line
1641 CONFIG_EXTRA="
1642     aandcttables
1643     ac3dsp
1644     audio_frame_queue
1645     audiodsp
1646     blockdsp
1647     bswapdsp
1648     cabac
1649     dirac_parse
1650     dvprofile
1651     faandct
1652     faanidct
1653     fdctdsp
1654     flacdsp
1655     fmtconvert
1656     g722dsp
1657     gcrypt
1658     gmp
1659     golomb
1660     gplv3
1661     h263dsp
1662     h264chroma
1663     h264dsp
1664     h264pred
1665     h264qpel
1666     hpeldsp
1667     huffman
1668     huffyuvdsp
1669     huffyuvencdsp
1670     idctdsp
1671     iirfilter
1672     imdct15
1673     intrax8
1674     ividsp
1675     jpegtables
1676     libx262
1677     lgplv3
1678     lpc
1679     lzf
1680     me_cmp
1681     mpeg_er
1682     mpegaudio
1683     mpegaudiodsp
1684     mpegvideo
1685     mpegvideoenc
1686     mss34dsp
1687     pixblockdsp
1688     qpeldsp
1689     qsv
1690     qsvdec
1691     qsvenc
1692     rangecoder
1693     riffdec
1694     riffenc
1695     rtpdec
1696     rtpenc_chain
1697     rv34dsp
1698     sinewin
1699     snappy
1700     startcode
1701     texturedsp
1702     texturedspenc
1703     tpeldsp
1704     videodsp
1705     vp3dsp
1706     vp56dsp
1707     vp8dsp
1708     wma_freqs
1709     wmv2dsp
1710 "
1711
1712 CMDLINE_SELECT="
1713     $ARCH_EXT_LIST
1714     $CONFIG_LIST
1715     $HAVE_LIST_CMDLINE
1716     $THREADS_LIST
1717     asm
1718     cross_compile
1719     debug
1720     extra_warnings
1721     logging
1722     lto
1723     optimizations
1724     rpath
1725 "
1726
1727 PATHS_LIST="
1728     bindir
1729     datadir
1730     docdir
1731     incdir
1732     libdir
1733     mandir
1734     prefix
1735     shlibdir
1736 "
1737
1738 CMDLINE_SET="
1739     $PATHS_LIST
1740     ar
1741     arch
1742     as
1743     build_suffix
1744     cc
1745     objcc
1746     cpu
1747     cross_prefix
1748     custom_allocator
1749     dep_cc
1750     env
1751     extra_version
1752     host_cc
1753     host_cflags
1754     host_ld
1755     host_ldflags
1756     host_libs
1757     host_os
1758     ld
1759     logfile
1760     malloc_prefix
1761     nm
1762     optflags
1763     pkg_config
1764     pkg_config_flags
1765     random_seed
1766     samples
1767     sysinclude
1768     sysroot
1769     target_exec
1770     target_os
1771     target_path
1772     target_samples
1773     toolchain
1774 "
1775
1776 CMDLINE_APPEND="
1777     extra_cflags
1778     extra_objcflags
1779     host_cppflags
1780 "
1781
1782 # code dependency declarations
1783
1784 # architecture extensions
1785
1786 armv5te_deps="arm"
1787 armv6_deps="arm"
1788 armv6t2_deps="arm"
1789 armv8_deps="aarch64"
1790 neon_deps_any="aarch64 arm"
1791 intrinsics_neon_deps="neon"
1792 vfp_deps_any="aarch64 arm"
1793 vfpv3_deps="vfp"
1794
1795 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1796
1797 altivec_deps="ppc"
1798 ppc4xx_deps="ppc"
1799 vsx_deps="altivec"
1800 power8_deps="vsx"
1801
1802 cpunop_deps="i686"
1803 x86_64_select="i686"
1804 x86_64_suggest="fast_cmov"
1805
1806 amd3dnow_deps="mmx"
1807 amd3dnowext_deps="amd3dnow"
1808 i686_deps="x86"
1809 mmx_deps="x86"
1810 mmxext_deps="mmx"
1811 sse_deps="mmxext"
1812 sse2_deps="sse"
1813 sse3_deps="sse2"
1814 ssse3_deps="sse3"
1815 sse4_deps="ssse3"
1816 sse42_deps="sse4"
1817 avx_deps="sse42"
1818 xop_deps="avx"
1819 fma3_deps="avx"
1820 fma4_deps="avx"
1821 avx2_deps="avx"
1822
1823 mmx_external_deps="yasm"
1824 mmx_inline_deps="inline_asm"
1825 mmx_suggest="mmx_external mmx_inline"
1826
1827 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1828     eval dep=\$${ext}_deps
1829     eval ${ext}_external_deps='"${dep}_external"'
1830     eval ${ext}_inline_deps='"${dep}_inline"'
1831     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1832 done
1833
1834 aligned_stack_if_any="aarch64 ppc x86"
1835 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1836 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1837 fast_unaligned_if_any="aarch64 ppc x86"
1838 simd_align_16_if_any="altivec neon sse"
1839
1840 # system capabilities
1841 symver_if_any="symver_asm_label symver_gnu_asm"
1842 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1843
1844 # threading support
1845 atomics_gcc_if="sync_val_compare_and_swap"
1846 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1847 atomics_win32_if="MemoryBarrier"
1848 atomics_native_if_any="$ATOMICS_LIST"
1849 w32threads_deps="atomics_native"
1850 threads_if_any="$THREADS_LIST"
1851
1852 # subsystems
1853 dct_select="rdft"
1854 dirac_parse_select="golomb"
1855 error_resilience_select="me_cmp"
1856 faandct_deps="faan fdctdsp"
1857 faanidct_deps="faan idctdsp"
1858 intrax8_select="error_resilience"
1859 mdct_select="fft"
1860 rdft_select="fft"
1861 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1862 mpeg_er_select="error_resilience"
1863 mpegaudio_select="mpegaudiodsp"
1864 mpegaudiodsp_select="dct"
1865 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp videodsp"
1866 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1867 nvenc_deps_any="dlopen LoadLibrary"
1868 nvenc_extralibs='$ldl'
1869 qsvdec_select="qsv"
1870 qsvenc_select="qsv"
1871
1872 # decoders / encoders
1873 aac_decoder_select="imdct15 mdct sinewin"
1874 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1875 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1876 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1877 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1878 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1879 adpcm_g722_decoder_select="g722dsp"
1880 adpcm_g722_encoder_select="g722dsp"
1881 aic_decoder_select="golomb idctdsp"
1882 alac_encoder_select="lpc"
1883 als_decoder_select="bswapdsp"
1884 amrnb_decoder_select="lsp"
1885 amrwb_decoder_select="lsp"
1886 amv_decoder_select="sp5x_decoder"
1887 ape_decoder_select="bswapdsp"
1888 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1889 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1890 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1891 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1892 atrac1_decoder_select="mdct sinewin"
1893 atrac3_decoder_select="mdct"
1894 atrac3p_decoder_select="mdct sinewin"
1895 bink_decoder_select="blockdsp hpeldsp"
1896 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1897 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1898 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1899 cllc_decoder_select="bswapdsp"
1900 comfortnoise_encoder_select="lpc"
1901 cook_decoder_select="audiodsp mdct sinewin"
1902 cscd_decoder_select="lzo"
1903 cscd_decoder_suggest="zlib"
1904 dca_decoder_select="fmtconvert mdct"
1905 dds_decoder_select="texturedsp"
1906 dnxhd_decoder_select="blockdsp idctdsp"
1907 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1908 dvvideo_decoder_select="dvprofile idctdsp"
1909 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1910 dxa_decoder_deps="zlib"
1911 dxv_decoder_select="lzf texturedsp"
1912 eac3_decoder_select="ac3_decoder"
1913 eac3_encoder_select="ac3_encoder"
1914 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1915 eatgq_decoder_select="aandcttables idctdsp"
1916 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
1917 exr_decoder_deps="zlib"
1918 ffv1_decoder_select="golomb rangecoder"
1919 ffv1_encoder_select="rangecoder"
1920 ffvhuff_decoder_select="huffyuv_decoder"
1921 ffvhuff_encoder_select="huffyuv_encoder"
1922 fic_decoder_select="golomb"
1923 flac_decoder_select="flacdsp golomb"
1924 flac_encoder_select="bswapdsp flacdsp golomb lpc"
1925 flashsv_decoder_deps="zlib"
1926 flashsv_encoder_deps="zlib"
1927 flashsv2_decoder_deps="zlib"
1928 flv_decoder_select="h263_decoder"
1929 flv_encoder_select="h263_encoder"
1930 fourxm_decoder_select="blockdsp bswapdsp"
1931 fraps_decoder_select="bswapdsp huffman"
1932 g2m_decoder_deps="zlib"
1933 g2m_decoder_select="blockdsp idctdsp jpegtables"
1934 h261_decoder_select="mpeg_er mpegvideo"
1935 h261_encoder_select="aandcttables mpegvideoenc"
1936 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1937 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1938 h263i_decoder_select="h263_decoder"
1939 h263p_encoder_select="h263_encoder"
1940 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
1941 h264_decoder_suggest="error_resilience"
1942 h264_nvenc_encoder_deps="nvenc"
1943 h264_qsv_decoder_deps="libmfx"
1944 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
1945 h264_qsv_encoder_deps="libmfx"
1946 h264_qsv_encoder_select="qsvenc"
1947 hap_decoder_select="snappy texturedsp"
1948 hap_encoder_deps="libsnappy"
1949 hap_encoder_select="texturedspenc"
1950 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1951 hevc_nvenc_encoder_deps="nvenc"
1952 hevc_qsv_encoder_deps="libmfx"
1953 hevc_qsv_decoder_deps="libmfx"
1954 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec hevc_qsv_hwaccel"
1955 hevc_qsv_encoder_select="qsvenc"
1956 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1957 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1958 iac_decoder_select="imc_decoder"
1959 imc_decoder_select="bswapdsp fft mdct sinewin"
1960 indeo3_decoder_select="hpeldsp"
1961 indeo4_decoder_select="ividsp"
1962 indeo5_decoder_select="ividsp"
1963 interplay_video_decoder_select="hpeldsp"
1964 jpegls_decoder_select="golomb mjpeg_decoder"
1965 jpegls_encoder_select="golomb"
1966 jv_decoder_select="blockdsp"
1967 lagarith_decoder_select="huffyuvdsp"
1968 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
1969 loco_decoder_select="golomb"
1970 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1971 metasound_decoder_select="lsp mdct sinewin"
1972 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1973 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
1974 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
1975 mjpegb_decoder_select="mjpeg_decoder"
1976 mlp_decoder_select="mlp_parser"
1977 motionpixels_decoder_select="bswapdsp"
1978 mp1_decoder_select="mpegaudio"
1979 mp1float_decoder_select="mpegaudio"
1980 mp2_decoder_select="mpegaudio"
1981 mp2float_decoder_select="mpegaudio"
1982 mp3_decoder_select="mpegaudio"
1983 mp3adu_decoder_select="mpegaudio"
1984 mp3adufloat_decoder_select="mpegaudio"
1985 mp3float_decoder_select="mpegaudio"
1986 mp3on4_decoder_select="mpegaudio"
1987 mp3on4float_decoder_select="mpegaudio"
1988 mpc7_decoder_select="bswapdsp mpegaudiodsp"
1989 mpc8_decoder_select="mpegaudiodsp"
1990 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1991 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1992 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
1993 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1994 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
1995 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1996 mpeg2_qsv_decoder_deps="libmfx"
1997 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
1998 mpeg2_qsv_encoder_deps="libmfx"
1999 mpeg2_qsv_encoder_select="qsvenc"
2000 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2001 mpeg4_encoder_select="h263_encoder"
2002 msa1_decoder_select="mss34dsp"
2003 msmpeg4v1_decoder_select="h263_decoder"
2004 msmpeg4v2_decoder_select="h263_decoder"
2005 msmpeg4v2_encoder_select="h263_encoder"
2006 msmpeg4v3_decoder_select="h263_decoder"
2007 msmpeg4v3_encoder_select="h263_encoder"
2008 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2009 mts2_decoder_select="mss34dsp"
2010 mxpeg_decoder_select="mjpeg_decoder"
2011 nellymoser_decoder_select="mdct sinewin"
2012 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2013 nuv_decoder_select="idctdsp lzo"
2014 on2avc_decoder_select="mdct"
2015 opus_decoder_deps="avresample"
2016 opus_decoder_select="imdct15"
2017 png_decoder_deps="zlib"
2018 png_encoder_deps="zlib"
2019 png_encoder_select="huffyuvencdsp"
2020 prores_decoder_select="idctdsp"
2021 prores_encoder_select="fdctdsp"
2022 qcelp_decoder_select="lsp"
2023 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2024 ra_144_encoder_select="audio_frame_queue lpc"
2025 ralf_decoder_select="golomb"
2026 rscc_decoder_deps="zlib"
2027 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2028 rv10_encoder_select="h263_encoder"
2029 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2030 rv20_encoder_select="h263_encoder"
2031 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2032 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2033 screenpresso_decoder_deps="zlib"
2034 shorten_decoder_select="golomb"
2035 sipr_decoder_select="lsp"
2036 sp5x_decoder_select="mjpeg_decoder"
2037 svq1_decoder_select="hpeldsp"
2038 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2039 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2040 svq3_decoder_suggest="zlib"
2041 tak_decoder_select="audiodsp"
2042 tdsc_decoder_deps="zlib"
2043 tdsc_decoder_select="mjpeg_decoder"
2044 theora_decoder_select="vp3_decoder"
2045 thp_decoder_select="mjpeg_decoder"
2046 tiff_decoder_suggest="zlib"
2047 tiff_encoder_suggest="zlib"
2048 truehd_decoder_select="mlp_decoder"
2049 truemotion2_decoder_select="bswapdsp"
2050 truespeech_decoder_select="bswapdsp"
2051 tscc_decoder_deps="zlib"
2052 txd_decoder_select="texturedsp"
2053 twinvq_decoder_select="mdct lsp sinewin"
2054 utvideo_decoder_select="bswapdsp"
2055 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2056 vble_decoder_select="huffyuvdsp"
2057 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
2058 vc1image_decoder_select="vc1_decoder"
2059 vorbis_decoder_select="mdct"
2060 vorbis_encoder_select="mdct"
2061 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2062 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2063 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2064 vp6a_decoder_select="vp6_decoder"
2065 vp6f_decoder_select="vp6_decoder"
2066 vp7_decoder_select="h264pred videodsp vp8dsp"
2067 vp8_decoder_select="h264pred videodsp vp8dsp"
2068 vp9_decoder_select="videodsp"
2069 webp_decoder_select="vp8_decoder"
2070 wmapro_decoder_select="mdct sinewin wma_freqs"
2071 wmav1_decoder_select="mdct sinewin wma_freqs"
2072 wmav1_encoder_select="mdct sinewin wma_freqs"
2073 wmav2_decoder_select="mdct sinewin wma_freqs"
2074 wmav2_encoder_select="mdct sinewin wma_freqs"
2075 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2076 wmv1_decoder_select="h263_decoder"
2077 wmv1_encoder_select="h263_encoder"
2078 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2079 wmv2_encoder_select="h263_encoder wmv2dsp"
2080 wmv3_decoder_select="vc1_decoder"
2081 wmv3image_decoder_select="wmv3_decoder"
2082 zerocodec_decoder_deps="zlib"
2083 zlib_decoder_deps="zlib"
2084 zlib_encoder_deps="zlib"
2085 zmbv_decoder_deps="zlib"
2086 zmbv_encoder_deps="zlib"
2087
2088 # hardware accelerators
2089 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2090 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2091 vaapi_deps="va_va_h"
2092 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2093 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2094 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2095
2096 h263_vaapi_hwaccel_deps="vaapi"
2097 h263_vaapi_hwaccel_select="h263_decoder"
2098 h264_d3d11va_hwaccel_deps="d3d11va"
2099 h264_d3d11va_hwaccel_select="h264_decoder"
2100 h264_dxva2_hwaccel_deps="dxva2"
2101 h264_dxva2_hwaccel_select="h264_decoder"
2102 h264_mmal_decoder_deps="mmal"
2103 h264_mmal_hwaccel_deps="mmal"
2104 h264_mmal_decoder_select="h264_decoder"
2105 h264_mmal_encoder_deps="mmal"
2106 h264_qsv_hwaccel_deps="libmfx"
2107 h264_vaapi_hwaccel_deps="vaapi"
2108 h264_vaapi_hwaccel_select="h264_decoder"
2109 h264_vda_hwaccel_deps="vda"
2110 h264_vda_hwaccel_select="h264_decoder"
2111 h264_vda_old_hwaccel_deps="vda"
2112 h264_vda_old_hwaccel_select="h264_decoder"
2113 h264_vdpau_hwaccel_deps="vdpau"
2114 h264_vdpau_hwaccel_select="h264_decoder"
2115 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2116 hevc_d3d11va_hwaccel_select="hevc_decoder"
2117 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2118 hevc_dxva2_hwaccel_select="hevc_decoder"
2119 hevc_qsv_hwaccel_deps="libmfx"
2120 mpeg1_vdpau_hwaccel_deps="vdpau"
2121 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2122 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2123 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2124 mpeg2_dxva2_hwaccel_deps="dxva2"
2125 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2126 mpeg2_qsv_hwaccel_deps="libmfx"
2127 mpeg2_vaapi_hwaccel_deps="vaapi"
2128 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2129 mpeg2_vdpau_hwaccel_deps="vdpau"
2130 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2131 mpeg4_vaapi_hwaccel_deps="vaapi"
2132 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2133 mpeg4_vdpau_hwaccel_deps="vdpau"
2134 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2135 vc1_d3d11va_hwaccel_deps="d3d11va"
2136 vc1_d3d11va_hwaccel_select="vc1_decoder"
2137 vc1_dxva2_hwaccel_deps="dxva2"
2138 vc1_dxva2_hwaccel_select="vc1_decoder"
2139 vc1_vaapi_hwaccel_deps="vaapi"
2140 vc1_vaapi_hwaccel_select="vc1_decoder"
2141 vc1_vdpau_hwaccel_deps="vdpau"
2142 vc1_vdpau_hwaccel_select="vc1_decoder"
2143 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2144 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2145 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2146 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2147
2148 # parsers
2149 h264_parser_select="h264_decoder"
2150 hevc_parser_select="golomb"
2151 mpegvideo_parser_select="mpegvideo"
2152 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2153 vc1_parser_select="mpegvideo startcode vc1_decoder"
2154
2155 # bitstream_filters
2156 mjpeg2jpeg_bsf_select="jpegtables"
2157
2158 # external libraries
2159 libdcadec_decoder_deps="libdcadec"
2160 libfaac_encoder_deps="libfaac"
2161 libfaac_encoder_select="audio_frame_queue"
2162 libfdk_aac_decoder_deps="libfdk_aac"
2163 libfdk_aac_encoder_deps="libfdk_aac"
2164 libfdk_aac_encoder_select="audio_frame_queue"
2165 libgsm_decoder_deps="libgsm"
2166 libgsm_encoder_deps="libgsm"
2167 libgsm_ms_decoder_deps="libgsm"
2168 libgsm_ms_encoder_deps="libgsm"
2169 libilbc_decoder_deps="libilbc"
2170 libilbc_encoder_deps="libilbc"
2171 libkvazaar_encoder_deps="libkvazaar"
2172 libmp3lame_encoder_deps="libmp3lame"
2173 libmp3lame_encoder_select="audio_frame_queue"
2174 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2175 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2176 libopencore_amrnb_encoder_select="audio_frame_queue"
2177 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2178 libopenh264_encoder_deps="libopenh264"
2179 libopenjpeg_decoder_deps="libopenjpeg"
2180 libopenjpeg_encoder_deps="libopenjpeg"
2181 libopus_decoder_deps="libopus"
2182 libopus_encoder_deps="libopus"
2183 libopus_encoder_select="audio_frame_queue"
2184 libschroedinger_decoder_deps="libschroedinger"
2185 libschroedinger_encoder_deps="libschroedinger"
2186 libspeex_decoder_deps="libspeex"
2187 libspeex_encoder_deps="libspeex"
2188 libspeex_encoder_select="audio_frame_queue"
2189 libtheora_encoder_deps="libtheora"
2190 libtwolame_encoder_deps="libtwolame"
2191 libvo_aacenc_encoder_deps="libvo_aacenc"
2192 libvo_aacenc_encoder_select="audio_frame_queue"
2193 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2194 libvorbis_encoder_deps="libvorbis"
2195 libvorbis_encoder_select="audio_frame_queue"
2196 libvpx_vp8_decoder_deps="libvpx"
2197 libvpx_vp8_encoder_deps="libvpx"
2198 libvpx_vp9_decoder_deps="libvpx"
2199 libvpx_vp9_encoder_deps="libvpx"
2200 libwavpack_encoder_deps="libwavpack"
2201 libwebp_encoder_deps="libwebp"
2202 libx262_encoder_deps="libx262"
2203 libx264_encoder_deps="libx264"
2204 libx265_encoder_deps="libx265"
2205 libxavs_encoder_deps="libxavs"
2206 libxvid_encoder_deps="libxvid"
2207
2208 # demuxers / muxers
2209 ac3_demuxer_select="ac3_parser"
2210 asf_demuxer_select="riffdec"
2211 asf_muxer_select="riffenc"
2212 asf_stream_muxer_select="asf_muxer"
2213 avi_demuxer_select="riffdec"
2214 avi_muxer_select="riffenc"
2215 avisynth_demuxer_deps="avisynth"
2216 avisynth_demuxer_select="riffdec"
2217 caf_demuxer_select="riffdec"
2218 dash_muxer_select="mp4_muxer"
2219 dirac_demuxer_select="dirac_parser"
2220 dv_demuxer_select="dvprofile"
2221 dv_muxer_select="dvprofile"
2222 dxa_demuxer_select="riffdec"
2223 eac3_demuxer_select="ac3_parser"
2224 f4v_muxer_select="mov_muxer"
2225 flac_demuxer_select="flac_parser"
2226 hds_muxer_select="flv_muxer"
2227 hls_muxer_select="mpegts_muxer"
2228 ipod_muxer_select="mov_muxer"
2229 ismv_muxer_select="mov_muxer"
2230 matroska_audio_muxer_select="matroska_muxer"
2231 matroska_demuxer_select="riffdec"
2232 matroska_demuxer_suggest="bzlib lzo zlib"
2233 matroska_muxer_select="riffenc"
2234 mmf_muxer_select="riffenc"
2235 mov_demuxer_select="riffdec"
2236 mov_demuxer_suggest="zlib"
2237 mov_muxer_select="riffenc rtpenc_chain"
2238 mp3_demuxer_select="mpegaudio_parser"
2239 mp4_muxer_select="mov_muxer"
2240 mpegts_muxer_select="adts_muxer latm_muxer"
2241 mpegtsraw_demuxer_select="mpegts_demuxer"
2242 mxf_d10_muxer_select="mxf_muxer"
2243 nut_muxer_select="riffenc"
2244 nuv_demuxer_select="riffdec"
2245 oga_muxer_select="ogg_muxer"
2246 ogg_demuxer_select="dirac_parse"
2247 opus_muxer_select="ogg_muxer"
2248 psp_muxer_select="mov_muxer"
2249 rtp_demuxer_select="sdp_demuxer"
2250 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol"
2251 rtsp_demuxer_select="http_protocol rtpdec"
2252 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2253 sap_demuxer_select="sdp_demuxer"
2254 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2255 sdp_demuxer_select="rtpdec"
2256 smoothstreaming_muxer_select="ismv_muxer"
2257 spdif_muxer_select="aac_parser"
2258 spx_muxer_select="ogg_muxer"
2259 swf_demuxer_suggest="zlib"
2260 tak_demuxer_select="tak_parser"
2261 tg2_muxer_select="mov_muxer"
2262 tgp_muxer_select="mov_muxer"
2263 w64_demuxer_select="wav_demuxer"
2264 wav_demuxer_select="riffdec"
2265 wav_muxer_select="riffenc"
2266 webm_muxer_select="riffenc"
2267 webm_muxer_suggest="libopus_encoder libvorbis_encoder libvpx_vp8_encoder libvpx_vp9_encoder"
2268 wtv_demuxer_select="riffdec"
2269 xmv_demuxer_select="riffdec"
2270 xwma_demuxer_select="riffdec"
2271
2272 # indevs / outdevs
2273 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2274 alsa_outdev_deps="alsa_asoundlib_h"
2275 avfoundation_indev_deps="AVFoundation_AVFoundation_h"
2276 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2277 dv1394_indev_deps="dv1394"
2278 dv1394_indev_select="dv_demuxer"
2279 fbdev_indev_deps="linux_fb_h"
2280 jack_indev_deps="jack_jack_h pthreads"
2281 libcdio_indev_deps="libcdio"
2282 libdc1394_indev_deps="libdc1394"
2283 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2284 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2285 pulse_indev_deps="libpulse"
2286 sndio_indev_deps="sndio_h"
2287 sndio_outdev_deps="sndio_h"
2288 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2289 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2290 vfwcap_indev_extralibs="-lavicap32"
2291 x11grab_indev_deps="x11grab"
2292 x11grab_xcb_indev_deps="libxcb"
2293
2294 # protocols
2295 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2296 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2297 ffrtmpcrypt_protocol_select="tcp_protocol"
2298 ffrtmphttp_protocol_deps="!librtmp_protocol"
2299 ffrtmphttp_protocol_select="http_protocol"
2300 gopher_protocol_select="network"
2301 http_protocol_select="tcp_protocol"
2302 httpproxy_protocol_select="tcp_protocol"
2303 https_protocol_select="tls_protocol"
2304 icecast_protocol_select="http_protocol"
2305 librtmp_protocol_deps="librtmp"
2306 librtmpe_protocol_deps="librtmp"
2307 librtmps_protocol_deps="librtmp"
2308 librtmpt_protocol_deps="librtmp"
2309 librtmpte_protocol_deps="librtmp"
2310 mmsh_protocol_select="http_protocol"
2311 mmst_protocol_select="network"
2312 rtmp_protocol_deps="!librtmp_protocol"
2313 rtmp_protocol_select="tcp_protocol"
2314 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2315 rtmps_protocol_deps="!librtmp_protocol"
2316 rtmps_protocol_select="tls_protocol"
2317 rtmpt_protocol_select="ffrtmphttp_protocol"
2318 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2319 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2320 rtp_protocol_select="udp_protocol"
2321 sctp_protocol_deps="struct_sctp_event_subscribe"
2322 sctp_protocol_select="network"
2323 srtp_protocol_select="rtp_protocol"
2324 tcp_protocol_select="network"
2325 tls_gnutls_protocol_deps="gnutls"
2326 tls_gnutls_protocol_select="tcp_protocol"
2327 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2328 tls_openssl_protocol_select="tcp_protocol"
2329 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2330 udp_protocol_select="network"
2331 unix_protocol_deps="sys_un_h"
2332 unix_protocol_select="network"
2333
2334 # filters
2335 blackframe_filter_deps="gpl"
2336 boxblur_filter_deps="gpl"
2337 bs2b_filter_deps="libbs2b"
2338 cropdetect_filter_deps="gpl"
2339 delogo_filter_deps="gpl"
2340 drawtext_filter_deps="libfreetype"
2341 frei0r_filter_deps="frei0r dlopen"
2342 frei0r_filter_extralibs='$ldl'
2343 frei0r_src_filter_deps="frei0r dlopen"
2344 frei0r_src_filter_extralibs='$ldl'
2345 hqdn3d_filter_deps="gpl"
2346 interlace_filter_deps="gpl"
2347 ocv_filter_deps="libopencv"
2348 resample_filter_deps="avresample"
2349 scale_filter_deps="swscale"
2350
2351 # examples
2352 avcodec_example_deps="avcodec avutil"
2353 filter_audio_example_deps="avfilter avutil"
2354 metadata_example_deps="avformat avutil"
2355 output_example_deps="avcodec avformat avutil swscale"
2356 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2357 transcode_aac_example_deps="avcodec avformat avresample"
2358
2359 # libraries, in linking order
2360 avcodec_deps="avutil"
2361 avdevice_deps="avformat avcodec avutil"
2362 avfilter_deps="avutil"
2363 avformat_deps="avcodec avutil"
2364 avresample_deps="avutil"
2365 swscale_deps="avutil"
2366
2367 # programs
2368 avconv_deps="avcodec avfilter avformat avresample swscale"
2369 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2370                fps_filter null_filter resample_filter scale_filter
2371                setpts_filter trim_filter"
2372 avplay_deps="avcodec avformat avresample swscale sdl"
2373 avplay_libs='$sdl_libs'
2374 avplay_select="rdft transpose_filter hflip_filter vflip_filter"
2375 avprobe_deps="avcodec avformat"
2376
2377 # documentation
2378 pod2man_deps="doc"
2379 texi2html_deps="doc"
2380
2381 # default parameters
2382
2383 logfile="config.log"
2384
2385 # installation paths
2386 prefix_default="/usr/local"
2387 bindir_default='${prefix}/bin'
2388 datadir_default='${prefix}/share/avconv'
2389 docdir_default='${prefix}/share/doc/libav'
2390 incdir_default='${prefix}/include'
2391 libdir_default='${prefix}/lib'
2392 mandir_default='${prefix}/share/man'
2393 shlibdir_default="$libdir_default"
2394
2395 # toolchain
2396 ar_default="ar"
2397 cc_default="gcc"
2398 host_cc_default="gcc"
2399 cp_f="cp -f"
2400 ln_s="ln -s -f"
2401 nm_default="nm -g"
2402 objformat="elf"
2403 pkg_config_default=pkg-config
2404 ranlib="ranlib"
2405 strip="strip"
2406 yasmexe="yasm"
2407
2408 # machine
2409 arch_default=$(uname -m)
2410 cpu="generic"
2411 intrinsics="none"
2412
2413 # OS
2414 target_os_default=$(tolower $(uname -s))
2415 host_os=$target_os_default
2416
2417 # configurable options
2418 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2419
2420 enable asm
2421 enable debug
2422 enable doc
2423 enable faan faandct faanidct
2424 enable optimizations
2425 enable safe_bitstream_reader
2426 enable static
2427 enable swscale_alpha
2428 enable valgrind_backtrace
2429
2430 # By default, enable only those hwaccels that have no external dependencies.
2431 enable d3d11va dxva2 vda vdpau
2432
2433 # build settings
2434 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2435 LIBPREF="lib"
2436 LIBSUF=".a"
2437 FULLNAME='$(NAME)$(BUILDSUF)'
2438 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2439 SLIBPREF="lib"
2440 SLIBSUF=".so"
2441 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2442 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2443 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2444 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2445 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2446 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2447
2448 asflags_filter=echo
2449 cflags_filter=echo
2450 ldflags_filter=echo
2451
2452 AS_C='-c'
2453 AS_O='-o $@'
2454 CC_C='-c'
2455 CC_E='-E -o $@'
2456 CC_O='-o $@'
2457 OBJCC_C='-c'
2458 OBJCC_E='-E -o $@'
2459 OBJCC_O='-o $@'
2460 LD_O='-o $@'
2461 LD_LIB='-l%'
2462 LD_PATH='-L'
2463 HOSTCC_C='-c'
2464 HOSTCC_E='-E -o $@'
2465 HOSTCC_O='-o $@'
2466 HOSTLD_O='-o $@'
2467
2468 host_libs='-lm'
2469 host_cflags_filter=echo
2470 host_ldflags_filter=echo
2471
2472 target_path='$(CURDIR)'
2473
2474 # since the object filename is not given with the -MM flag, the compiler
2475 # is only able to print the basename, and we must add the path ourselves
2476 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2477 DEPFLAGS='-MM'
2478
2479 # find source path
2480 if test -f configure; then
2481     source_path=.
2482 else
2483     source_path=$(cd $(dirname "$0"); pwd)
2484     echo "$source_path" | grep -q '[[:blank:]]' &&
2485         die "Out of tree builds are impossible with whitespace in source path."
2486     test -e "$source_path/config.h" &&
2487         die "Out of tree builds are impossible with config.h in source dir."
2488 fi
2489
2490 for v in "$@"; do
2491     r=${v#*=}
2492     l=${v%"$r"}
2493     r=$(sh_quote "$r")
2494     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2495 done
2496
2497 find_things(){
2498     thing=$1
2499     pattern=$2
2500     file=$source_path/$3
2501     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2502 }
2503
2504 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2505 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2506 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2507 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2508 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2509 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2510 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2511 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2512 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2513 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2514 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2515
2516 ALL_COMPONENTS="
2517     $BSF_LIST
2518     $DECODER_LIST
2519     $DEMUXER_LIST
2520     $ENCODER_LIST
2521     $FILTER_LIST
2522     $HWACCEL_LIST
2523     $INDEV_LIST
2524     $MUXER_LIST
2525     $OUTDEV_LIST
2526     $PARSER_LIST
2527     $PROTOCOL_LIST
2528 "
2529
2530 for n in $COMPONENT_LIST; do
2531     v=$(toupper ${n%s})_LIST
2532     eval enable \$$v
2533     eval ${n}_if_any="\$$v"
2534 done
2535
2536 enable $ARCH_EXT_LIST
2537
2538 die_unknown(){
2539     echo "Unknown option \"$1\"."
2540     echo "See $0 --help for available options."
2541     exit 1
2542 }
2543
2544 print_3_columns() {
2545     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2546 }
2547
2548 show_list() {
2549     suffix=_$1
2550     shift
2551     echo $* | sed s/$suffix//g | print_3_columns
2552     exit 0
2553 }
2554
2555 rand_list(){
2556     IFS=', '
2557     set -- $*
2558     unset IFS
2559     for thing; do
2560         comp=${thing%:*}
2561         prob=${thing#$comp}
2562         prob=${prob#:}
2563         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2564         echo "prob ${prob:-0.5}"
2565         printf '%s\n' $comp
2566     done
2567 }
2568
2569 do_random(){
2570     action=$1
2571     shift
2572     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2573     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2574 }
2575
2576 for opt do
2577     optval="${opt#*=}"
2578     case "$opt" in
2579         --extra-ldflags=*)
2580             add_ldflags $optval
2581         ;;
2582         --extra-ldexeflags=*)
2583             add_ldexeflags $optval
2584         ;;
2585         --extra-libs=*)
2586             add_extralibs $optval
2587         ;;
2588         --disable-devices)
2589             disable $INDEV_LIST $OUTDEV_LIST
2590         ;;
2591         --enable-debug=*)
2592             debuglevel="$optval"
2593         ;;
2594         --disable-programs)
2595             disable $PROGRAM_LIST
2596         ;;
2597         --disable-everything)
2598             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2599         ;;
2600         --disable-all)
2601             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2602             disable $LIBRARY_LIST $PROGRAM_LIST doc
2603         ;;
2604         --enable-random|--disable-random)
2605             action=${opt%%-random}
2606             do_random ${action#--} $COMPONENT_LIST
2607         ;;
2608         --enable-random=*|--disable-random=*)
2609             action=${opt%%-random=*}
2610             do_random ${action#--} $optval
2611         ;;
2612         --enable-*=*|--disable-*=*)
2613             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2614             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2615             eval list=\$$(toupper $thing)_LIST
2616             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2617             $action $(filter "$name" $list)
2618         ;;
2619         --enable-avserver|--disable-avserver*)
2620             warn "avserver has been removed, the ${opt} option is only"\
2621                  "provided for compatibility and will be removed in the future"
2622         ;;
2623         --enable-?*|--disable-?*)
2624             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2625             if is_in $option $COMPONENT_LIST; then
2626                 test $action = disable && action=unset
2627                 eval $action \$$(toupper ${option%s})_LIST
2628             elif is_in $option $CMDLINE_SELECT; then
2629                 $action $option
2630             else
2631                 die_unknown $opt
2632             fi
2633         ;;
2634         --list-*)
2635             NAME="${opt#--list-}"
2636             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2637             NAME=${NAME%s}
2638             eval show_list $NAME \$$(toupper $NAME)_LIST
2639         ;;
2640         --help|-h) show_help
2641         ;;
2642         *)
2643             optname="${opt%%=*}"
2644             optname="${optname#--}"
2645             optname=$(echo "$optname" | sed 's/-/_/g')
2646             if is_in $optname $CMDLINE_SET; then
2647                 eval $optname='$optval'
2648             elif is_in $optname $CMDLINE_APPEND; then
2649                 append $optname "$optval"
2650             else
2651                 die_unknown $opt
2652             fi
2653         ;;
2654     esac
2655 done
2656
2657 for e in $env; do
2658     eval "export $e"
2659 done
2660
2661 disabled logging && logfile=/dev/null
2662
2663 # Disable all the library-specific components if the library itself
2664 # is disabled, see AVCODEC_LIST and following _LIST variables.
2665
2666 disable_components(){
2667     disabled ${1} && disable $(
2668         eval components="\$$(toupper ${1})_COMPONENTS"
2669         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2670     )
2671 }
2672
2673 map 'disable_components $v' $LIBRARY_LIST
2674
2675 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2676 set >> $logfile
2677
2678 case "$toolchain" in
2679     clang-asan)
2680         cc_default="clang"
2681         add_cflags  -fsanitize=address
2682         add_ldflags -fsanitize=address
2683     ;;
2684     clang-tsan)
2685         cc_default="clang"
2686         add_cflags  -fsanitize=thread -pie
2687         add_ldflags -fsanitize=thread -pie
2688     ;;
2689     clang-usan)
2690         cc_default="clang"
2691         add_cflags  -fsanitize=undefined -O1
2692         add_ldflags -fsanitize=undefined
2693     ;;
2694     gcc-asan)
2695         cc_default="gcc"
2696         add_cflags  -fsanitize=address
2697         add_ldflags -fsanitize=address
2698     ;;
2699     gcc-tsan)
2700         cc_default="gcc"
2701         add_cflags  -fsanitize=thread -pie -fPIC
2702         add_ldflags -fsanitize=thread -pie -fPIC
2703     ;;
2704     gcc-usan)
2705         cc_default="gcc"
2706         add_cflags  -fsanitize=undefined
2707         add_ldflags -fsanitize=undefined
2708     ;;
2709     valgrind-massif)
2710         target_exec_default="valgrind"
2711         target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2712     ;;
2713     valgrind-memcheck)
2714         target_exec_default="valgrind"
2715         target_exec_args="--track-origins=yes --leak-check=full"
2716     ;;
2717     msvc)
2718         # Check whether the current MSVC version needs the C99 converter.
2719         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2720         # support enough of C99 to build libav. Default to the new
2721         # behaviour if the regexp was unable to match anything, since this
2722         # successfully parses the version number of existing supported
2723         # versions that require the converter (MSVC 2010 and 2012).
2724         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2725         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2726             cc_default="cl"
2727         else
2728             cc_default="c99wrap cl"
2729         fi
2730         ld_default="$source_path/compat/windows/mslink"
2731         nm_default="dumpbin -symbols"
2732         ar_default="lib"
2733         case "$arch" in
2734         arm*)
2735             as_default="armasm"
2736             ;;
2737         esac
2738         target_os_default="win32"
2739         # Use a relative path for TMPDIR. This makes sure all the
2740         # ffconf temp files are written with a relative path, avoiding
2741         # issues with msys/win32 path conversion for MSVC parameters
2742         # such as -Fo<file> or -out:<file>.
2743         TMPDIR=.
2744     ;;
2745     icl)
2746         cc_default="icl"
2747         ld_default="xilink"
2748         nm_default="dumpbin -symbols"
2749         ar_default="xilib"
2750         target_os_default="win32"
2751         TMPDIR=.
2752     ;;
2753     gcov)
2754         add_cflags  -fprofile-arcs -ftest-coverage
2755         add_ldflags -fprofile-arcs -ftest-coverage
2756     ;;
2757     hardened)
2758         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2759         add_cflags   -fno-strict-overflow -fstack-protector-all
2760         add_ldflags  -Wl,-z,relro -Wl,-z,now
2761     ;;
2762     ?*)
2763         die "Unknown toolchain $toolchain"
2764     ;;
2765 esac
2766
2767 test -n "$cross_prefix" && enable cross_compile
2768
2769 if enabled cross_compile; then
2770     test -n "$arch" && test -n "$target_os" ||
2771         die "Must specify target arch and OS when cross-compiling"
2772 fi
2773
2774 ar_default="${cross_prefix}${ar_default}"
2775 cc_default="${cross_prefix}${cc_default}"
2776 occ_default="${cross_prefix}${occ_default}"
2777 nm_default="${cross_prefix}${nm_default}"
2778 pkg_config_default="${cross_prefix}${pkg_config_default}"
2779 ranlib="${cross_prefix}${ranlib}"
2780 strip="${cross_prefix}${strip}"
2781
2782 sysinclude_default="${sysroot}/usr/include"
2783
2784 set_default arch cc pkg_config sysinclude target_exec target_os
2785 enabled cross_compile || host_cc_default=$cc
2786 set_default host_cc
2787
2788 if ! $pkg_config --version >/dev/null 2>&1; then
2789     warn "$pkg_config not found, library detection may fail."
2790     pkg_config=false
2791 fi
2792
2793 exesuf() {
2794     case $1 in
2795         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2796     esac
2797 }
2798
2799 EXESUF=$(exesuf $target_os)
2800 HOSTEXESUF=$(exesuf $host_os)
2801
2802 # set temporary file name
2803 : ${TMPDIR:=$TEMPDIR}
2804 : ${TMPDIR:=$TMP}
2805 : ${TMPDIR:=/tmp}
2806
2807 if ! check_cmd mktemp -u XXXXXX; then
2808     # simple replacement for missing mktemp
2809     # NOT SAFE FOR GENERAL USE
2810     mktemp(){
2811         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2812     }
2813 fi
2814
2815 tmpfile(){
2816     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2817         (set -C; exec > $tmp) 2>/dev/null ||
2818         die "Unable to create temporary file in $TMPDIR."
2819     append TMPFILES $tmp
2820     eval $1=$tmp
2821 }
2822
2823 trap 'rm -f -- $TMPFILES' EXIT
2824
2825 tmpfile TMPASM .asm
2826 tmpfile TMPC   .c
2827 tmpfile TMPE   $EXESUF
2828 tmpfile TMPH   .h
2829 tmpfile TMPO   .o
2830 tmpfile TMPS   .S
2831 tmpfile TMPSH  .sh
2832 tmpfile TMPV   .ver
2833
2834 unset -f mktemp
2835
2836 chmod +x $TMPE
2837
2838 # make sure we can execute files in $TMPDIR
2839 cat > $TMPSH 2>> $logfile <<EOF
2840 #! /bin/sh
2841 EOF
2842 chmod +x $TMPSH >> $logfile 2>&1
2843 if ! $TMPSH >> $logfile 2>&1; then
2844     cat <<EOF
2845 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2846 variable to another directory and make sure that it is not mounted noexec.
2847 EOF
2848     die "Sanity test failed."
2849 fi
2850
2851 armasm_flags(){
2852     for flag; do
2853         case $flag in
2854             # Filter out MSVC cl.exe options from cflags that shouldn't
2855             # be passed to gas-preprocessor
2856             -M[TD]*)                                            ;;
2857             *)                  echo $flag                      ;;
2858         esac
2859    done
2860 }
2861
2862 ccc_flags(){
2863     for flag; do
2864         case $flag in
2865             -std=c99)           echo -c99                       ;;
2866             -mcpu=*)            echo -arch ${flag#*=}           ;;
2867             -mieee)             echo -ieee                      ;;
2868             -O*|-fast)          echo $flag                      ;;
2869             -fno-math-errno)    echo -assume nomath_errno       ;;
2870             -g)                 echo -g3                        ;;
2871             -Wall)              echo -msg_enable level2         ;;
2872             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2873             -Wl,*)              echo $flag                      ;;
2874             -f*|-W*)                                            ;;
2875             *)                  echo $flag                      ;;
2876         esac
2877    done
2878 }
2879
2880 cparser_flags(){
2881     for flag; do
2882         case $flag in
2883             -Wno-switch)             echo -Wno-switch-enum ;;
2884             -Wno-format-zero-length) ;;
2885             -Wdisabled-optimization) ;;
2886             -Wno-pointer-sign)       echo -Wno-other ;;
2887             *)                       echo $flag ;;
2888         esac
2889     done
2890 }
2891
2892 msvc_common_flags(){
2893     for flag; do
2894         case $flag in
2895             # In addition to specifying certain flags under the compiler
2896             # specific filters, they must be specified here as well or else the
2897             # generic catch all at the bottom will print the original flag.
2898             -Wall)                ;;
2899             -std=c99)             ;;
2900             # Common flags
2901             -fomit-frame-pointer) ;;
2902             -g)                   echo -Z7 ;;
2903             -fno-math-errno)      ;;
2904             -fno-common)          ;;
2905             -fno-signed-zeros)    ;;
2906             -fPIC)                ;;
2907             -mthumb)              ;;
2908             -march=*)             ;;
2909             -lz)                  echo zlib.lib ;;
2910             -lavifil32)           echo vfw32.lib ;;
2911             -lavicap32)           echo vfw32.lib user32.lib ;;
2912             -l*)                  echo ${flag#-l}.lib ;;
2913             -L*)                  echo -libpath:${flag#-L} ;;
2914             *)                    echo $flag ;;
2915         esac
2916     done
2917 }
2918
2919 msvc_flags(){
2920     msvc_common_flags "$@"
2921     for flag; do
2922         case $flag in
2923             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2924                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2925                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2926                                        -wd4273 -wd4554 -wd4701 ;;
2927         esac
2928     done
2929 }
2930
2931 icl_flags(){
2932     msvc_common_flags "$@"
2933     for flag; do
2934         case $flag in
2935             # Despite what Intel's documentation says -Wall, which is supported
2936             # on Windows, does enable remarks so disable them here.
2937             -Wall)                echo $flag -Qdiag-disable:remark ;;
2938             -std=c99)             echo -Qstd=c99 ;;
2939         esac
2940     done
2941 }
2942
2943 pgi_flags(){
2944     for flag; do
2945         case $flag in
2946             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2947             -fomit-frame-pointer) echo -Mnoframe ;;
2948             -g)                   echo -gopt ;;
2949             *)                    echo $flag ;;
2950         esac
2951     done
2952 }
2953
2954 suncc_flags(){
2955     for flag; do
2956         case $flag in
2957             -march=*|-mcpu=*)
2958                 case "${flag#*=}" in
2959                     native)                   echo -xtarget=native       ;;
2960                     v9|niagara)               echo -xarch=sparc          ;;
2961                     ultrasparc)               echo -xarch=sparcvis       ;;
2962                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2963                     i586|pentium)             echo -xchip=pentium        ;;
2964                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2965                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2966                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2967                     pentium4*)          echo -xtarget=pentium4           ;;
2968                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2969                     *-sse3)             echo -xarch=sse3                 ;;
2970                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2971                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2972                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2973                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
2974                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2975                     k8|opteron|athlon64|athlon-fx)
2976                                                echo -xarch=sse2a         ;;
2977                     athlon*)                   echo -xarch=pentium_proa  ;;
2978                 esac
2979                 ;;
2980             -std=c99)             echo -xc99              ;;
2981             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2982             -fPIC)                echo -KPIC -xcode=pic32 ;;
2983             -W*,*)                echo $flag              ;;
2984             -f*-*|-W*|-mimpure-text)                      ;;
2985             -shared)              echo -G                 ;;
2986             *)                    echo $flag              ;;
2987         esac
2988     done
2989 }
2990
2991 tms470_flags(){
2992     for flag; do
2993         case $flag in
2994             -march=*|-mcpu=*)
2995                 case "${flag#*=}" in
2996                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2997                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2998                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2999                     armv6*|arm11*)          echo -mv=6   ;;
3000                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3001                                             echo -mv=5e  ;;
3002                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3003                 esac
3004                 ;;
3005             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3006             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3007             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3008             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3009             -msoft-float)   echo --float_support=vfplib       ;;
3010             -O[0-3]|-mf=*)  echo $flag                        ;;
3011             -g)             echo -g -mn                       ;;
3012             -pds=*)         echo $flag                        ;;
3013             -D*|-I*)        echo $flag                        ;;
3014             --gcc|--abi=*)  echo $flag                        ;;
3015             -me)            echo $flag                        ;;
3016         esac
3017     done
3018 }
3019
3020 probe_cc(){
3021     pfx=$1
3022     _cc=$2
3023
3024     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3025     unset _ld_o _ldflags _ld_lib _ld_path
3026     unset _depflags _DEPCMD _DEPFLAGS
3027     _flags_filter=echo
3028
3029     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3030         _type=llvm_gcc
3031         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3032         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3033         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3034         _cflags_speed='-O3'
3035         _cflags_size='-Os'
3036     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3037         _type=gcc
3038         gcc_version=$($_cc --version | head -n1)
3039         gcc_basever=$($_cc -dumpversion)
3040         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3041         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3042         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3043         if ! $_cc -dumpversion | grep -q '^2\.'; then
3044             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3045         fi
3046         _cflags_speed='-O3'
3047         _cflags_size='-Os'
3048     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3049         _type=icc
3050         _ident=$($_cc --version | head -n1)
3051         _depflags='-MMD'
3052         _cflags_speed='-O3'
3053         _cflags_size='-Os'
3054         _cflags_noopt='-O1'
3055     elif $_cc -v 2>&1 | grep -q xlc; then
3056         _type=xlc
3057         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3058         _cflags_speed='-O5'
3059         _cflags_size='-O5 -qcompact'
3060     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3061         _type=ccc
3062         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3063         _DEPFLAGS='-M'
3064         _cflags_speed='-fast'
3065         _cflags_size='-O1'
3066         _flags_filter=ccc_flags
3067     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3068         test -d "$sysroot" || die "No valid sysroot specified."
3069         _type=armcc
3070         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3071         armcc_conf="$PWD/armcc.conf"
3072         $_cc --arm_linux_configure                 \
3073              --arm_linux_config_file="$armcc_conf" \
3074              --configure_sysroot="$sysroot"        \
3075              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3076              die "Error creating armcc configuration file."
3077         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3078         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3079         as_default="${cross_prefix}gcc"
3080         _depflags='-MMD'
3081         _cflags_speed='-O3'
3082         _cflags_size='-Os'
3083     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3084         _type=tms470
3085         _ident=$($_cc -version | head -n1 | tr -s ' ')
3086         _flags='--gcc --abi=eabi -me'
3087         _cc_e='-ppl -fe=$@'
3088         _cc_o='-fe=$@'
3089         _depflags='-ppa -ppd=$(@:.o=.d)'
3090         _cflags_speed='-O3 -mf=5'
3091         _cflags_size='-O3 -mf=2'
3092         _flags_filter=tms470_flags
3093     elif $_cc -v 2>&1 | grep -q clang; then
3094         _type=clang
3095         _ident=$($_cc --version 2>/dev/null | head -n1)
3096         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3097         _cflags_speed='-O3'
3098         _cflags_size='-Os'
3099     elif $_cc -V 2>&1 | grep -q Sun; then
3100         _type=suncc
3101         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3102         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3103         _DEPFLAGS='-xM1 -xc99'
3104         _ldflags='-std=c99'
3105         _cflags_speed='-O5'
3106         _cflags_size='-O5 -xspace'
3107         _flags_filter=suncc_flags
3108     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3109         _type=pathscale
3110         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3111         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3112         _cflags_speed='-O2'
3113         _cflags_size='-Os'
3114         _flags_filter='filter_out -Wdisabled-optimization'
3115     elif $_cc -v 2>&1 | grep -q Open64; then
3116         _type=open64
3117         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3118         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3119         _cflags_speed='-O2'
3120         _cflags_size='-Os'
3121         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3122     elif $_cc -V 2>&1 | grep -q Portland; then
3123         _type=pgi
3124         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3125         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3126         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3127         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3128         _cflags_noopt="-O1"
3129         _flags_filter=pgi_flags
3130     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3131         _type=armasm
3132         _ident=$($_cc | head -n1)
3133         # 4509: "This form of conditional instruction is deprecated"
3134         _flags="-nologo -ignore 4509"
3135         _flags_filter=armasm_flags
3136     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3137         _type=msvc
3138         _ident=$($_cc 2>&1 | head -n1)
3139         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3140         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3141         _cflags_speed="-O2"
3142         _cflags_size="-O1"
3143         if $_cc -nologo- 2>&1 | grep -q Linker; then
3144             _ld_o='-out:$@'
3145         else
3146             _ld_o='-Fe$@'
3147         fi
3148         _cc_o='-Fo$@'
3149         _cc_e='-P -Fi$@'
3150         _flags_filter=msvc_flags
3151         _ld_lib='lib%.a'
3152         _ld_path='-libpath:'
3153         _flags='-nologo'
3154         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3155     elif $_cc 2>&1 | grep -q Intel; then
3156         _type=icl
3157         _ident=$($_cc 2>&1 | head -n1)
3158         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3159         # Not only is O3 broken on 13.x+ but it is slower on all previous
3160         # versions (tested) as well.
3161         _cflags_speed="-O2"
3162         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3163         if $_cc 2>&1 | grep -q Linker; then
3164             _ld_o='-out:$@'
3165         else
3166             _ld_o='-Fe$@'
3167         fi
3168         _cc_o='-Fo$@'
3169         _cc_e='-P'
3170         _flags_filter=icl_flags
3171         _ld_lib='lib%.a'
3172         _ld_path='-libpath:'
3173         # -Qdiag-error to make icl error when seeing certain unknown arguments
3174         _flags='-nologo -Qdiag-error:4044,10157'
3175         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3176         # with MSVC which enables it by default.
3177         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS'
3178     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3179         _type=cparser
3180         _ident=$($_cc --version | head -n1)
3181         _depflags='-MMD'
3182         _cflags_speed='-O4'
3183         _cflags_size='-O2'
3184         _flags_filter=cparser_flags
3185     fi
3186
3187     eval ${pfx}_type=\$_type
3188     eval ${pfx}_ident=\$_ident
3189 }
3190
3191 set_ccvars(){
3192     eval ${1}_C=\${_cc_c-\${${1}_C}}
3193     eval ${1}_E=\${_cc_e-\${${1}_E}}
3194     eval ${1}_O=\${_cc_o-\${${1}_O}}
3195
3196     if [ -n "$_depflags" ]; then
3197         eval ${1}_DEPFLAGS=\$_depflags
3198     else
3199         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3200         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3201         eval DEP${1}FLAGS=\$_flags
3202     fi
3203 }
3204
3205 probe_cc cc "$cc"
3206 cflags_filter=$_flags_filter
3207 cflags_speed=$_cflags_speed
3208 cflags_size=$_cflags_size
3209 cflags_noopt=$_cflags_noopt
3210 add_cflags $_flags $_cflags
3211 cc_ldflags=$_ldflags
3212 set_ccvars CC
3213
3214 probe_cc hostcc "$host_cc"
3215 host_cflags_filter=$_flags_filter
3216 add_host_cflags  $_flags $_cflags
3217 set_ccvars HOSTCC
3218
3219 test -n "$cc_type" && enable $cc_type ||
3220     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3221
3222 : ${as_default:=$cc}
3223 : ${objcc_default:=$cc}
3224 : ${dep_cc_default:=$cc}
3225 : ${ld_default:=$cc}
3226 : ${host_ld_default:=$host_cc}
3227 set_default ar as objcc dep_cc ld host_ld
3228
3229 probe_cc as "$as"
3230 asflags_filter=$_flags_filter
3231 add_asflags $_flags $_cflags
3232 set_ccvars AS
3233
3234 probe_cc objcc "$objcc"
3235 objcflags_filter=$_flags_filter
3236 add_objcflags $_flags $_cflags
3237 set_ccvars OBJC
3238
3239 probe_cc ld "$ld"
3240 ldflags_filter=$_flags_filter
3241 add_ldflags $_flags $_ldflags
3242 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3243 LD_O=${_ld_o-$LD_O}
3244 LD_LIB=${_ld_lib-$LD_LIB}
3245 LD_PATH=${_ld_path-$LD_PATH}
3246
3247 probe_cc hostld "$host_ld"
3248 host_ldflags_filter=$_flags_filter
3249 add_host_ldflags $_flags $_ldflags
3250 HOSTLD_O=${_ld_o-$HOSTLD_O}
3251
3252 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3253     probe_cc depcc "$dep_cc"
3254     CCDEP=${_DEPCMD:-$DEPCMD}
3255     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3256     DEPCCFLAGS=$_flags
3257 fi
3258
3259 if $ar 2>&1 | grep -q Microsoft; then
3260     arflags="-nologo"
3261     ar_o='-out:$@'
3262 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3263     arflags="rq"
3264     ar_o='$@'
3265 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3266     arflags='-Xany -r -c'
3267     ar_o='$@'
3268 else
3269     arflags="rc"
3270     ar_o='$@'
3271 fi
3272
3273 add_cflags $extra_cflags
3274 add_objcflags $extra_objcflags
3275 add_asflags $extra_cflags
3276
3277 if test -n "$sysroot"; then
3278     case "$cc_type" in
3279         gcc|llvm_gcc|clang)
3280             add_cppflags --sysroot="$sysroot"
3281             add_ldflags --sysroot="$sysroot"
3282         ;;
3283         tms470)
3284             add_cppflags -I"$sysinclude"
3285             add_ldflags  --sysroot="$sysroot"
3286         ;;
3287     esac
3288 fi
3289
3290 if test "$cpu" = host; then
3291     enabled cross_compile &&
3292         die "--cpu=host makes no sense when cross-compiling."
3293
3294     case "$cc_type" in
3295         gcc|llvm_gcc)
3296             check_native(){
3297                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3298                 sed -n "/cc1.*$1=/{
3299                             s/.*$1=\\([^ ]*\\).*/\\1/
3300                             p
3301                             q
3302                         }" $TMPE
3303             }
3304             cpu=$(check_native -march || check_native -mcpu)
3305         ;;
3306     esac
3307
3308     test "${cpu:-host}" = host &&
3309         die "--cpu=host not supported with compiler $cc"
3310 fi
3311
3312 # Deal with common $arch aliases
3313 case "$arch" in
3314     aarch64|arm64)
3315         arch="aarch64"
3316     ;;
3317     arm*)
3318         arch="arm"
3319     ;;
3320     mips*|IP*)
3321         arch="mips"
3322     ;;
3323     parisc*|hppa*)
3324         arch="parisc"
3325     ;;
3326     "Power Macintosh"|ppc*|powerpc*)
3327         arch="ppc"
3328     ;;
3329     s390|s390x)
3330         arch="s390"
3331     ;;
3332     sh4|sh)
3333         arch="sh4"
3334     ;;
3335     sun4u|sparc*)
3336         arch="sparc"
3337     ;;
3338     tilegx|tile-gx)
3339         arch="tilegx"
3340     ;;
3341     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3342         arch="x86"
3343     ;;
3344 esac
3345
3346 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3347 enable $arch
3348
3349 # Add processor-specific flags
3350 if enabled aarch64; then
3351
3352     case $cpu in
3353         armv*)
3354             cpuflags="-march=$cpu"
3355         ;;
3356         *)
3357             cpuflags="-mcpu=$cpu"
3358         ;;
3359     esac
3360
3361 elif enabled alpha; then
3362
3363     cpuflags="-mcpu=$cpu"
3364
3365 elif enabled arm; then
3366
3367     check_arm_arch() {
3368         check_cpp_condition stddef.h \
3369             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3370             $cpuflags
3371     }
3372
3373     probe_arm_arch() {
3374         if   check_arm_arch 4;        then echo armv4;
3375         elif check_arm_arch 4T;       then echo armv4t;
3376         elif check_arm_arch 5;        then echo armv5;
3377         elif check_arm_arch 5E;       then echo armv5e;
3378         elif check_arm_arch 5T;       then echo armv5t;
3379         elif check_arm_arch 5TE;      then echo armv5te;
3380         elif check_arm_arch 5TEJ;     then echo armv5te;
3381         elif check_arm_arch 6;        then echo armv6;
3382         elif check_arm_arch 6J;       then echo armv6j;
3383         elif check_arm_arch 6K;       then echo armv6k;
3384         elif check_arm_arch 6Z;       then echo armv6z;
3385         elif check_arm_arch 6ZK;      then echo armv6zk;
3386         elif check_arm_arch 6T2;      then echo armv6t2;
3387         elif check_arm_arch 7;        then echo armv7;
3388         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3389         elif check_arm_arch 7S;       then echo armv7-a;
3390         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3391         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3392         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3393         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3394         fi
3395     }
3396
3397     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3398
3399     case $cpu in
3400         armv*)
3401             cpuflags="-march=$cpu"
3402             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3403         ;;
3404         *)
3405             cpuflags="-mcpu=$cpu"
3406             case $cpu in
3407                 cortex-a*)                               subarch=armv7a  ;;
3408                 cortex-r*)                               subarch=armv7r  ;;
3409                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3410                 arm11*)                                  subarch=armv6   ;;
3411                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3412                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3413                 *)                             subarch=$(probe_arm_arch) ;;
3414             esac
3415         ;;
3416     esac
3417
3418     case "$subarch" in
3419         armv5t*)    enable fast_clz                ;;
3420         armv[6-8]*) enable fast_clz fast_unaligned ;;
3421     esac
3422
3423 elif enabled avr32; then
3424
3425     case $cpu in
3426         ap7[02]0[0-2])
3427             subarch="avr32_ap"
3428             cpuflags="-mpart=$cpu"
3429         ;;
3430         ap)
3431             subarch="avr32_ap"
3432             cpuflags="-march=$cpu"
3433         ;;
3434         uc3[ab]*)
3435             subarch="avr32_uc"
3436             cpuflags="-mcpu=$cpu"
3437         ;;
3438         uc)
3439             subarch="avr32_uc"
3440             cpuflags="-march=$cpu"
3441         ;;
3442     esac
3443
3444 elif enabled bfin; then
3445
3446     cpuflags="-mcpu=$cpu"
3447
3448 elif enabled mips; then
3449
3450     cpuflags="-march=$cpu"
3451
3452 elif enabled ppc; then
3453
3454     disable ldbrx
3455
3456     case $(tolower $cpu) in
3457         601|ppc601|powerpc601)
3458             cpuflags="-mcpu=601"
3459             disable altivec
3460         ;;
3461         603*|ppc603*|powerpc603*)
3462             cpuflags="-mcpu=603"
3463             disable altivec
3464         ;;
3465         604*|ppc604*|powerpc604*)
3466             cpuflags="-mcpu=604"
3467             disable altivec
3468         ;;
3469         g3|75*|ppc75*|powerpc75*)
3470             cpuflags="-mcpu=750"
3471             disable altivec
3472         ;;
3473         g4|745*|ppc745*|powerpc745*)
3474             cpuflags="-mcpu=7450"
3475             disable vsx
3476         ;;
3477         74*|ppc74*|powerpc74*)
3478             cpuflags="-mcpu=7400"
3479             disable vsx
3480         ;;
3481         g5|970|ppc970|powerpc970)
3482             cpuflags="-mcpu=970"
3483             disable vsx
3484         ;;
3485         power[3-6]*)
3486             cpuflags="-mcpu=$cpu"
3487             disable vsx
3488         ;;
3489         power[7-8]*)
3490             cpuflags="-mcpu=$cpu"
3491             enable ldbrx
3492         ;;
3493         cell)
3494             cpuflags="-mcpu=cell"
3495             enable ldbrx
3496             disable vsx
3497         ;;
3498         e500mc)
3499             cpuflags="-mcpu=e500mc"
3500             disable altivec
3501         ;;
3502         e500v2)
3503             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3504             disable altivec
3505             disable dcbzl
3506         ;;
3507         e500)
3508             cpuflags="-mcpu=8540 -mhard-float"
3509             disable altivec
3510             disable dcbzl
3511         ;;
3512     esac
3513
3514 elif enabled sparc; then
3515
3516     case $cpu in
3517         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3518             cpuflags="-mcpu=$cpu"
3519         ;;
3520         ultrasparc*|niagara[234])
3521             cpuflags="-mcpu=$cpu"
3522         ;;
3523     esac
3524
3525 elif enabled x86; then
3526
3527     case $cpu in
3528         i[345]86|pentium)
3529             cpuflags="-march=$cpu"
3530             disable i686
3531             disable mmx
3532         ;;
3533         # targets that do NOT support nopl and conditional mov (cmov)
3534         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3535             cpuflags="-march=$cpu"
3536             disable i686
3537         ;;
3538         # targets that do support nopl and conditional mov (cmov)
3539         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3540             cpuflags="-march=$cpu"
3541             enable i686
3542             enable fast_cmov
3543         ;;
3544         # targets that do support conditional mov but on which it's slow
3545         pentium4|pentium4m|prescott|nocona)
3546             cpuflags="-march=$cpu"
3547             enable i686
3548             disable fast_cmov
3549         ;;
3550     esac
3551
3552 fi
3553
3554 if [ "$cpu" != generic ]; then
3555     add_cflags  $cpuflags
3556     add_asflags $cpuflags
3557     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3558 fi
3559
3560 # compiler sanity check
3561 check_exec <<EOF
3562 int main(void){ return 0; }
3563 EOF
3564 if test "$?" != 0; then
3565     echo "$cc is unable to create an executable file."
3566     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3567         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3568         echo "Only do this if you know what cross compiling means."
3569     fi
3570     die "C compiler test failed."
3571 fi
3572
3573 add_cppflags -D_ISOC99_SOURCE
3574 check_cflags -std=c99
3575 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3576 #include <stdlib.h>
3577 EOF
3578 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3579 #include <stdlib.h>
3580 EOF
3581
3582 add_host_cppflags -D_ISOC99_SOURCE
3583 check_host_cflags -std=c99
3584 check_host_cflags -Wall
3585 check_host_cflags -O3
3586
3587 check_64bit(){
3588     arch32=$1
3589     arch64=$2
3590     expr=$3
3591     check_code cc "" "int test[2*($expr) - 1]" &&
3592         subarch=$arch64 || subarch=$arch32
3593 }
3594
3595 case "$arch" in
3596     aarch64|alpha|ia64)
3597         spic=$shared
3598     ;;
3599     mips)
3600         check_64bit mips mips64 '_MIPS_SIM > 1'
3601         spic=$shared
3602     ;;
3603     parisc)
3604         check_64bit parisc parisc64 'sizeof(void *) > 4'
3605         spic=$shared
3606     ;;
3607     ppc)
3608         check_64bit ppc ppc64 'sizeof(void *) > 4'
3609         spic=$shared
3610     ;;
3611     s390)
3612         check_64bit s390 s390x 'sizeof(void *) > 4'
3613         spic=$shared
3614     ;;
3615     sparc)
3616         check_64bit sparc sparc64 'sizeof(void *) > 4'
3617         spic=$shared
3618     ;;
3619     x86)
3620         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3621         if test "$subarch" = "x86_64"; then
3622             spic=$shared
3623         fi
3624     ;;
3625 esac
3626
3627 enable $subarch
3628 enabled spic && enable_weak pic
3629
3630 # OS specific
3631 case $target_os in
3632     aix)
3633         SHFLAGS=-shared
3634         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3635         enabled shared && add_ldflags -Wl,-brtl
3636         ;;
3637     android)
3638         disable symver
3639         enable section_data_rel_ro
3640         SLIB_INSTALL_NAME='$(SLIBNAME)'
3641         SLIB_INSTALL_LINKS=
3642         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3643         ;;
3644     haiku)
3645         prefix_default="/boot/common"
3646         network_extralibs="-lnetwork"
3647         host_libs=
3648         ;;
3649     sunos)
3650         SHFLAGS='-shared -Wl,-h,$$(@F)'
3651         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3652         network_extralibs="-lsocket -lnsl"
3653         # When using suncc to build, the Solaris linker will mark
3654         # an executable with each instruction set encountered by
3655         # the Solaris assembler.  As our libraries contain their own
3656         # guards for processor-specific code, instead suppress
3657         # generation of the HWCAPS ELF section on Solaris x86 only.
3658         enabled_all suncc x86 &&
3659             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3660             add_ldflags -Wl,-M,mapfile
3661         nm_default='nm -P -g'
3662         SLIB_CREATE_DEF_CMD='$(Q)perl $(SRC_PATH)/compat/solaris/make_sunver.pl $$(filter %.ver,$$^) $(OBJS) | grep -v @ > $(SUBDIR)lib$(NAME).ver-sol2'
3663         ;;
3664     netbsd)
3665         disable symver
3666         oss_indev_extralibs="-lossaudio"
3667         oss_outdev_extralibs="-lossaudio"
3668         ;;
3669     openbsd|bitrig)
3670         disable symver
3671         SHFLAGS='-shared'
3672         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3673         SLIB_INSTALL_LINKS=
3674         oss_indev_extralibs="-lossaudio"
3675         oss_outdev_extralibs="-lossaudio"
3676         ;;
3677     dragonfly)
3678         disable symver
3679         ;;
3680     freebsd)
3681         ;;
3682     bsd/os)
3683         add_extralibs -lpoll -lgnugetopt
3684         ;;
3685     darwin)
3686         enabled ppc && add_asflags -force_cpusubtype_ALL
3687         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3688         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3689         add_ldflags -Wl,-dynamic,-search_paths_first
3690         SLIBSUF=".dylib"
3691         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3692         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3693         objformat="macho"
3694         enabled x86_64 && objformat="macho64"
3695         enabled_any pic shared ||
3696             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3697         ;;
3698     msys*)
3699         die "Native MSYS builds are discouraged, please use the MINGW environment.";
3700         ;;
3701     mingw32*)
3702         if test $target_os = "mingw32ce"; then
3703             disable network
3704         else
3705             target_os=mingw32
3706         fi
3707         LIBTARGET=i386
3708         if enabled x86_64; then
3709             LIBTARGET="i386:x86-64"
3710         elif enabled arm; then
3711             LIBTARGET=arm-wince
3712         fi
3713         check_ldflags -Wl,--nxcompat
3714         check_ldflags -Wl,--dynamicbase
3715         shlibdir_default="$bindir_default"
3716         SLIBPREF=""
3717         SLIBSUF=".dll"
3718         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3719         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3720         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3721         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3722         SLIB_INSTALL_LINKS=
3723         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3724         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3725         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3726         objformat="win32"
3727         dlltool="${cross_prefix}dlltool"
3728         ranlib=:
3729         enable dos_paths
3730         ;;
3731     win32|win64)
3732         disable symver
3733         if enabled shared; then
3734             # Link to the import library instead of the normal static library
3735             # for shared libs.
3736             LD_LIB='%.lib'
3737             # Cannot build both shared and static libs with MSVC or icl.
3738             disable static
3739         fi
3740         shlibdir_default="$bindir_default"
3741         SLIBPREF=""
3742         SLIBSUF=".dll"
3743         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3744         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3745         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3746         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3747         SLIB_INSTALL_LINKS=
3748         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3749         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3750         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3751         objformat="win32"
3752         ranlib=:
3753         enable dos_paths
3754         ;;
3755     cygwin*)
3756         target_os=cygwin
3757         shlibdir_default="$bindir_default"
3758         SLIBPREF="cyg"
3759         SLIBSUF=".dll"
3760         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3761         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3762         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3763         SLIB_INSTALL_LINKS=
3764         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3765         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3766         objformat="win32"
3767         enable dos_paths
3768         ;;
3769     *-dos|freedos|opendos)
3770         network_extralibs="-lsocket"
3771         objformat="coff"
3772         enable dos_paths
3773         add_cppflags -U__STRICT_ANSI__
3774         ;;
3775     linux)
3776         enable dv1394
3777         enable section_data_rel_ro
3778         ;;
3779     irix*)
3780         target_os=irix
3781         ranlib="echo ignoring ranlib"
3782         ;;
3783     os/2*)
3784         ln_s="cp -f"
3785         objformat="aout"
3786         add_cppflags -D_GNU_SOURCE
3787         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3788         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3789         LIBSUF="_s.a"
3790         SLIBPREF=""
3791         SLIBSUF=".dll"
3792         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3793         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3794         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3795             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3796             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3797             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3798             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3799         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3800             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3801         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3802         enable dos_paths
3803         ;;
3804     gnu/kfreebsd)
3805         add_cppflags -D_BSD_SOURCE
3806         ;;
3807     gnu)
3808         ;;
3809     qnx)
3810         add_cppflags -D_QNX_SOURCE
3811         network_extralibs="-lsocket"
3812         ;;
3813     symbian)
3814         SLIBSUF=".dll"
3815         enable dos_paths
3816         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3817         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3818         add_ldflags -Wl,--target1-abs,--no-undefined \
3819                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3820                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3821         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3822                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3823                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3824         ;;
3825     osf1)
3826         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3827         ;;
3828     minix)
3829         ;;
3830     plan9)
3831         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3832                      -D_REENTRANT_SOURCE        \
3833                      -D_RESEARCH_SOURCE         \
3834                      -DFD_SETSIZE=96            \
3835                      -DHAVE_SOCK_OPTS
3836         add_compat strtod.o strtod=avpriv_strtod
3837         network_extralibs='-lbsd'
3838         exeobjs=compat/plan9/main.o
3839         cp_f='cp'
3840         ;;
3841     none)
3842         ;;
3843     *)
3844         die "Unknown OS '$target_os'."
3845         ;;
3846 esac
3847
3848 # determine libc flavour
3849
3850 probe_libc(){
3851     pfx=$1
3852     pfx_no_=${pfx%_}
3853     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3854     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3855         eval ${pfx}libc_type=uclibc
3856         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3857     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3858         eval ${pfx}libc_type=glibc
3859         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3860     # MinGW headers can be installed on Cygwin, so check for newlib first.
3861     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3862         eval ${pfx}libc_type=newlib
3863         add_${pfx}cppflags -U__STRICT_ANSI__
3864     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3865     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3866         eval ${pfx}libc_type=mingw64
3867         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3868         eval test \$${pfx_no_}cc_type = "gcc" &&
3869             add_${pfx}cppflags -D__printf__=__gnu_printf__
3870     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3871          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3872         eval ${pfx}libc_type=mingw32
3873         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3874             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3875             die "ERROR: MinGW32 runtime version must be >= 3.15."
3876         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3877         eval test \$${pfx_no_}cc_type = "gcc" &&
3878             add_${pfx}cppflags -D__printf__=__gnu_printf__
3879     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3880         eval ${pfx}libc_type=msvcrt
3881         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
3882             if [ "$pfx" = host_ ]; then
3883                 add_host_cppflags -Dsnprintf=_snprintf
3884             else
3885                 add_compat strtod.o strtod=avpriv_strtod
3886                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3887                                              _snprintf=avpriv_snprintf  \
3888                                              vsnprintf=avpriv_vsnprintf
3889             fi
3890         fi
3891         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3892         # 0x601 by default unless something else is set by the user.
3893         # This can easily lead to us detecting functions only present
3894         # in such new versions and producing binaries requiring windows 7.0.
3895         # Therefore explicitly set the default to XP unless the user has
3896         # set something else on the command line.
3897         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
3898         # family. For these cases, configure is free to use any functions
3899         # found in the SDK headers by default. (Alternatively, we could force
3900         # _WIN32_WINNT to 0x0602 in that case.)
3901         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3902             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
3903 #ifdef WINAPI_FAMILY
3904 #include <winapifamily.h>
3905 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
3906 #error not desktop
3907 #endif
3908 #endif
3909 EOF
3910     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3911         eval ${pfx}libc_type=klibc
3912     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3913         eval ${pfx}libc_type=bionic
3914     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3915         eval ${pfx}libc_type=solaris
3916         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3917     else
3918         eval ${pfx}libc_type=default
3919         add_${pfx}cppflags -D_DEFAULT_SOURCE
3920     fi
3921 }
3922
3923 probe_libc
3924 test -n "$libc_type" && enable libc_$libc_type
3925 probe_libc host_
3926 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3927
3928 case $libc_type in
3929     bionic)
3930         add_compat strtod.o strtod=avpriv_strtod
3931         ;;
3932 esac
3933
3934 # hacks for compiler/libc/os combinations
3935
3936 if enabled_all tms470 libc_glibc; then
3937     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3938     add_cppflags -D__USER_LABEL_PREFIX__=
3939     add_cppflags -D__builtin_memset=memset
3940     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3941     add_cflags   -pds=48    # incompatible redefinition of macro
3942 fi
3943
3944 if enabled_all ccc libc_glibc; then
3945     add_ldflags -Wl,-z,now  # calls to libots crash without this
3946 fi
3947
3948 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
3949     add_cppflags '-I\$(SRC_PATH)/compat/float'
3950
3951 esc(){
3952     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3953 }
3954
3955 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
3956
3957 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3958
3959 set_default $PATHS_LIST
3960 set_default nm
3961
3962 # we need to build at least one lib type
3963 if ! enabled_any static shared; then
3964     cat <<EOF
3965 At least one library type must be built.
3966 Specify --enable-static to build the static libraries or --enable-shared to
3967 build the shared libraries as well. To only build the shared libraries specify
3968 --disable-static in addition to --enable-shared.
3969 EOF
3970     exit 1;
3971 fi
3972
3973 die_license_disabled() {
3974     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3975 }
3976
3977 die_license_disabled gpl libcdio
3978 die_license_disabled gpl libx264
3979 die_license_disabled gpl libx265
3980 die_license_disabled gpl libxavs
3981 die_license_disabled gpl libxvid
3982 die_license_disabled gpl x11grab
3983
3984 die_license_disabled nonfree libfaac
3985 die_license_disabled nonfree libfdk_aac
3986 die_license_disabled nonfree nvenc
3987 die_license_disabled nonfree openssl
3988
3989 die_license_disabled version3 libopencore_amrnb
3990 die_license_disabled version3 libopencore_amrwb
3991 die_license_disabled version3 libvo_aacenc
3992 die_license_disabled version3 libvo_amrwbenc
3993
3994 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3995
3996 disabled optimizations || check_cflags -fomit-frame-pointer
3997
3998 enable_weak_pic() {
3999     disabled pic && return
4000     enable pic
4001     add_cppflags -DPIC
4002     case "$target_os" in
4003     mingw*|cygwin*)
4004         ;;
4005     *)
4006         add_cflags -fPIC
4007         ;;
4008     esac
4009     add_asflags  -fPIC
4010 }
4011
4012 enabled pic && enable_weak_pic
4013
4014 check_cc <<EOF || die "Symbol mangling check failed."
4015 int ff_extern;
4016 EOF
4017 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4018 extern_prefix=${sym%%ff_extern*}
4019
4020 check_cc <<EOF && enable_weak inline_asm
4021 void foo(void) { __asm__ volatile ("" ::); }
4022 EOF
4023
4024 _restrict=
4025 for restrict_keyword in restrict __restrict__ __restrict; do
4026     check_cc <<EOF && _restrict=$restrict_keyword && break
4027 void foo(char * $restrict_keyword p);
4028 EOF
4029 done
4030
4031 check_cc <<EOF && enable pragma_deprecated
4032 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4033 EOF
4034
4035 check_cc <<EOF && enable attribute_packed
4036 struct { int x; } __attribute__((packed)) x;
4037 EOF
4038
4039 check_cc <<EOF && enable attribute_may_alias
4040 union { int x; } __attribute__((may_alias)) x;
4041 EOF
4042
4043 check_cc <<EOF || die "endian test failed"
4044 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4045 EOF
4046 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4047
4048 check_gas() {
4049     log "check_gas using '$as' as AS"
4050     # :vararg is used on aarch64, arm and ppc altivec
4051     check_as <<EOF || return 1
4052 .macro m n, y:vararg=0
4053 \n: .int \y
4054 .endm
4055 m x
4056 EOF
4057     # .altmacro is only used in arm asm
4058     ! enabled arm || check_as <<EOF || return 1
4059 .altmacro
4060 EOF
4061     enable gnu_as
4062     return 0
4063 }
4064
4065 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4066     nogas=:
4067     enabled_any arm aarch64 && nogas=die
4068     enabled_all ppc altivec && nogas=warn
4069     as_noop=-v
4070
4071     case $as_type in
4072         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4073         gcc)  gaspp_as_type=gas ;;
4074         *)    gaspp_as_type=$as_type ;;
4075     esac
4076
4077     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4078
4079     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4080         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4081
4082     if ! check_gas ; then
4083         as=${gas:=$as}
4084         check_gas || \
4085             $nogas "GNU assembler not found, install/update gas-preprocessor"
4086     fi
4087
4088     check_as <<EOF && enable as_func
4089 .func test
4090 .endfunc
4091 EOF
4092 fi
4093
4094 check_inline_asm inline_asm_labels '"1:\n"'
4095
4096 if enabled aarch64; then
4097     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4098     # internal assembler in clang 3.3 does not support this instruction
4099     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4100     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4101
4102     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4103
4104 elif enabled alpha; then
4105
4106     check_cflags -mieee
4107
4108 elif enabled arm; then
4109
4110     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4111     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4112     enabled thumb && check_cflags -mthumb || check_cflags -marm
4113
4114     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4115         enable vfp_args
4116     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4117         enable vfp_args
4118     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4119         case "${cross_prefix:-$cc}" in
4120             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4121             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4122 __asm__ (".eabi_attribute 28, 1");
4123 int main(void) { return 0; }
4124 EOF
4125         esac
4126         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4127     fi
4128
4129     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4130     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4131     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4132     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4133     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4134     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4135
4136     [ $target_os = linux ] || [ $target_os = android ] ||
4137         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4138             $ARCH_EXT_LIST_ARM
4139
4140     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4141
4142     check_as <<EOF && enable as_dn_directive
4143 ra .dn d0.i16
4144 .unreq ra
4145 EOF
4146
4147     # llvm's integrated assembler supports .object_arch from llvm 3.5
4148     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4149 .object_arch armv4
4150 EOF
4151
4152     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4153
4154 elif enabled mips; then
4155
4156     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4157
4158     # make sure that only an instruction set is enabled
4159     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4160
4161     if enabled mips64; then
4162         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4163             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4164                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4165     else
4166         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4167             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4168                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4169     fi
4170
4171 elif enabled parisc; then
4172
4173     if enabled gcc; then
4174         case $($cc -dumpversion) in
4175             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4176         esac
4177     fi
4178
4179 elif enabled ppc; then
4180
4181     enable local_aligned_8 local_aligned_16
4182
4183     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4184     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4185     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4186     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4187
4188     # AltiVec flags: The FSF version of GCC differs from the Apple version
4189     if enabled altivec; then
4190         check_cflags -maltivec -mabi=altivec &&
4191         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4192         check_cflags -faltivec
4193
4194         # check if our compiler supports Motorola AltiVec C API
4195         check_cc <<EOF || disable altivec
4196 $inc_altivec_h
4197 int main(void) {
4198     vector signed int v1 = (vector signed int) { 0 };
4199     vector signed int v2 = (vector signed int) { 1 };
4200     v1 = vec_add(v1, v2);
4201     return 0;
4202 }
4203 EOF
4204
4205         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4206     fi
4207
4208     if enabled vsx; then
4209         check_cflags -mvsx &&
4210         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4211     fi
4212
4213     if enabled power8; then
4214         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4215     fi
4216
4217 elif enabled x86; then
4218
4219     check_builtin rdtsc    intrin.h   "__rdtsc()"
4220     check_builtin mm_empty mmintrin.h "_mm_empty()"
4221
4222     enable local_aligned_8 local_aligned_16
4223
4224     # check whether EBP is available on x86
4225     # As 'i' is stored on the stack, this program will crash
4226     # if the base pointer is used to access it because the
4227     # base pointer is cleared in the inline assembly code.
4228     check_exec_crash <<EOF && enable ebp_available
4229 volatile int i=0;
4230 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4231 return i;
4232 EOF
4233
4234     # check whether EBX is available on x86
4235     check_inline_asm ebx_available '""::"b"(0)' &&
4236         check_inline_asm ebx_available '"":::"%ebx"'
4237
4238     # check whether xmm clobbers are supported
4239     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4240
4241     # check whether binutils is new enough to compile SSSE3/MMXEXT
4242     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4243     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4244
4245     if ! disabled_any asm mmx yasm; then
4246         if check_cmd $yasmexe --version; then
4247             enabled x86_64 && yasm_extra="-m amd64"
4248             yasm_debug="-g dwarf2"
4249         elif check_cmd nasm -v; then
4250             yasmexe=nasm
4251             yasm_debug="-g -F dwarf"
4252             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4253         fi
4254
4255         YASMFLAGS="-f $objformat $yasm_extra"
4256         enabled pic               && append YASMFLAGS "-DPIC"
4257         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4258         case "$objformat" in
4259             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4260         esac
4261
4262         check_yasm "movbe ecx, [5]" && enable yasm ||
4263             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4264         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4265         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4266         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4267         check_yasm "CPU amdnop" || disable cpunop
4268     fi
4269
4270     case "$cpu" in
4271         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4272             disable fast_clz
4273         ;;
4274     esac
4275
4276 fi
4277
4278 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4279
4280 check_ldflags -Wl,--as-needed
4281
4282 if check_func dlopen; then
4283     ldl=
4284 elif check_func dlopen -ldl; then
4285     ldl=-ldl
4286 fi
4287
4288 if ! disabled network; then
4289     check_func getaddrinfo $network_extralibs
4290     check_func inet_aton $network_extralibs
4291
4292     check_type netdb.h "struct addrinfo"
4293     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4294     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4295     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4296     check_type poll.h "struct pollfd"
4297     check_type netinet/sctp.h "struct sctp_event_subscribe"
4298     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4299     check_type netinet/in.h "struct sockaddr_in6"
4300     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4301     check_type "sys/types.h sys/socket.h" socklen_t
4302
4303     # Prefer arpa/inet.h over winsock2
4304     if check_header arpa/inet.h ; then
4305         check_func closesocket
4306     elif check_header winsock2.h ; then
4307         check_func_headers winsock2.h closesocket -lws2 &&
4308             network_extralibs="-lws2" ||
4309         { check_func_headers winsock2.h closesocket -lws2_32 &&
4310             network_extralibs="-lws2_32"; } || disable winsock2_h network
4311         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4312
4313         check_type ws2tcpip.h socklen_t
4314         check_type ws2tcpip.h "struct addrinfo"
4315         check_type ws2tcpip.h "struct group_source_req"
4316         check_type ws2tcpip.h "struct ip_mreq_source"
4317         check_type ws2tcpip.h "struct ipv6_mreq"
4318         check_type winsock2.h "struct pollfd"
4319         check_struct winsock2.h "struct sockaddr" sa_len
4320         check_type ws2tcpip.h "struct sockaddr_in6"
4321         check_type ws2tcpip.h "struct sockaddr_storage"
4322     else
4323         disable network
4324     fi
4325 fi
4326
4327 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4328 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4329 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4330 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4331
4332 case "$custom_allocator" in
4333     jemalloc)
4334         # jemalloc by default does not use a prefix
4335         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4336     ;;
4337     tcmalloc)
4338         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
4339         malloc_prefix=tc_
4340     ;;
4341 esac
4342
4343 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4344 check_func  ${malloc_prefix}memalign            && enable memalign
4345 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4346
4347 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4348     check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4349
4350 check_func  fcntl
4351 check_func  fork
4352 check_func  gethrtime
4353 check_func  getopt
4354 check_func  getrusage
4355 check_func  gettimeofday
4356 check_func  gmtime_r
4357 check_func  isatty
4358 check_func  localtime_r
4359 check_func  mach_absolute_time
4360 check_func  mkstemp
4361 check_func  mmap
4362 check_func  mprotect
4363 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4364 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4365 check_func  sched_getaffinity
4366 check_func  setrlimit
4367 check_func  strerror_r
4368 check_func  sysconf
4369 check_func  sysctl
4370 check_func  usleep
4371
4372 check_func_headers io.h setmode
4373 check_func_headers stdlib.h getenv
4374
4375 check_func_headers windows.h CoTaskMemFree -lole32
4376 check_func_headers windows.h GetProcessAffinityMask
4377 check_func_headers windows.h GetProcessTimes
4378 check_func_headers windows.h GetSystemTimeAsFileTime
4379 check_func_headers windows.h LoadLibrary
4380 check_func_headers windows.h MapViewOfFile
4381 check_func_headers windows.h SetConsoleTextAttribute
4382 check_func_headers windows.h Sleep
4383 check_func_headers windows.h VirtualAlloc
4384 check_struct windows.h "CONDITION_VARIABLE" Ptr
4385
4386 check_header direct.h
4387 check_header dlfcn.h
4388 check_header d3d11.h
4389 check_header dxva.h
4390 check_header dxva2api.h
4391 check_header io.h
4392 check_header mach/mach_time.h
4393 check_header malloc.h
4394 check_header poll.h
4395 check_header sys/mman.h
4396 check_header sys/param.h
4397 check_header sys/resource.h
4398 check_header sys/select.h
4399 check_header sys/time.h
4400 check_header sys/un.h
4401 check_header unistd.h
4402 check_header valgrind/valgrind.h
4403 check_header vdpau/vdpau.h
4404 check_header vdpau/vdpau_x11.h
4405 check_header VideoDecodeAcceleration/VDADecoder.h
4406 check_header windows.h
4407 check_header X11/extensions/XvMClib.h
4408
4409 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4410 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4411 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4412
4413 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4414
4415 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4416 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4417 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4418
4419 if ! disabled w32threads && ! enabled pthreads; then
4420     check_func_headers "windows.h process.h" _beginthreadex &&
4421         enable w32threads || disable w32threads
4422 fi
4423
4424 # check for some common methods of building with pthread support
4425 # do this before the optional library checks as some of them require pthreads
4426 if ! disabled pthreads && ! enabled w32threads; then
4427     enable pthreads
4428     if check_func pthread_join -pthread; then
4429         add_cflags -pthread
4430         add_extralibs -pthread
4431     elif check_func pthread_join -pthreads; then
4432         add_cflags -pthreads
4433         add_extralibs -pthreads
4434     elif check_func pthread_join -lpthreadGC2; then
4435         add_extralibs -lpthreadGC2
4436     elif check_lib pthread.h pthread_join -lpthread; then
4437         :
4438     elif ! check_func pthread_join; then
4439         disable pthreads
4440     fi
4441 fi
4442
4443 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4444 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4445
4446 check_lib math.h sin -lm && LIBM="-lm"
4447 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4448
4449 atan2f_args=2
4450 ldexpf_args=2
4451 powf_args=2
4452
4453 for func in $MATH_FUNCS; do
4454     eval check_mathfunc $func \${${func}_args:-1}
4455 done
4456
4457 # these are off by default, so fail if requested and not available
4458 enabled avisynth          && { check_lib2 "avisynth/avisynth_c.h windows.h" LoadLibrary ||
4459                                check_lib2 "avxsynth/avxsynth_c.h dlfcn.h" dlopen -ldl   ||
4460                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4461 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4462 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4463 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4464 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4465 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4466 enabled libfdk_aac        && require_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4467 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4468 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4469 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4470                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4471                                done || die "ERROR: libgsm not found"; }
4472 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4473 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.7.1" kvazaar.h kvz_api_get
4474 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
4475 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4476 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4477 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4478 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4479 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
4480 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4481                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4482 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4483 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4484 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4485 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4486 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
4487 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4488 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4489 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4490 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4491 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4492 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4493 enabled libvpx            && require_pkg_config "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version && {
4494     enabled libvpx_vp8_decoder && {
4495         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
4496             disable libvpx_vp8_decoder;
4497     }
4498     enabled libvpx_vp8_encoder && {
4499         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
4500             disable libvpx_vp8_encoder;
4501     }
4502     enabled libvpx_vp9_decoder && {
4503         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
4504             disable libvpx_vp9_decoder;
4505     }
4506     enabled libvpx_vp9_encoder && {
4507         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
4508             disable libvpx_vp9_encoder;
4509     }
4510     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
4511         die "libvpx enabled but no supported decoders found"
4512     fi
4513 }
4514 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4515 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4516 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4517                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4518                                die "ERROR: libx264 version must be >= 0.118."; } &&
4519                              { check_cpp_condition x264.h "X264_MPEG2" &&
4520                                enable libx262; }
4521 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
4522                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
4523                                die "ERROR: libx265 version must be >= 57."; }
4524 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4525 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4526 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4527                                 { ! enabled cross_compile && {
4528                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
4529                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
4530                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
4531                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
4532                                die "ERROR: mmal not found"; }
4533 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4534                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4535                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4536                                die "ERROR: openssl not found"; }
4537
4538 if enabled gnutls; then
4539     { check_lib2 gmp.h mpz_export -lgmp && enable gmp; } ||
4540     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4541 fi
4542
4543 # libdc1394 check
4544 if enabled libdc1394; then
4545     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
4546         enable libdc1394_2; } ||
4547     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4548         enable libdc1394_1; } ||
4549     die "ERROR: No version of libdc1394 found "
4550 fi
4551
4552 if enabled nvenc; then
4553     check_header cuda.h || die "ERROR: cuda.h not found.";
4554     check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found.";
4555     check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 5" ||
4556         die "ERROR: NVENC API version 4 or older is not supported";
4557 fi
4558
4559 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4560     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4561     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4562     enable sdl
4563 fi
4564
4565 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4566 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4567
4568 check_header linux/fb.h
4569 check_header linux/videodev2.h
4570 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4571
4572 check_header AVFoundation/AVFoundation.h &&
4573     check_objcflags -fobjc-arc &&
4574     add_extralibs -framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia ||
4575     disable AVFoundation_AVFoundation_h
4576
4577 check_header sys/videoio.h
4578
4579 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4580 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4581 # w32api 3.12 had it defined wrong
4582 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4583
4584 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4585 { check_header dev/bktr/ioctl_meteor.h &&
4586   check_header dev/bktr/ioctl_bt848.h; } ||
4587 { check_header machine/ioctl_meteor.h &&
4588   check_header machine/ioctl_bt848.h; } ||
4589 { check_header dev/video/meteor/ioctl_meteor.h &&
4590   check_header dev/video/bktr/ioctl_bt848.h; } ||
4591 check_header dev/ic/bt8xx.h
4592
4593 check_header sndio.h
4594 check_header sys/soundcard.h
4595 check_header soundcard.h
4596
4597 enabled_any alsa_indev alsa_outdev &&
4598     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4599
4600 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4601     check_func jack_port_get_latency_range -ljack
4602
4603 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4604
4605 if enabled libcdio; then
4606     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4607     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4608     die "ERROR: No usable libcdio/cdparanoia found"
4609 fi
4610
4611 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4612
4613 if enabled libxcb || enabled x11grab && ! disabled libxcb; then
4614     check_pkg_config xcb-shape xcb/shape.h xcb_shape_rectangles || {
4615         enabled libxcb && die "ERROR: libxcb not found";
4616     } && disable x11grab && enable libxcb
4617
4618     disabled libxcb_shm ||
4619         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
4620             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
4621         } && check_header sys/shm.h && enable libxcb_shm
4622
4623     disabled libxcb_xfixes ||
4624         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
4625             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
4626         } && enable libxcb_xfixes
4627
4628     add_cflags "$xcb_event_cflags $xcb_shm_cflags $xcb_xfixes_cflags"
4629     add_extralibs "$xcb_event_libs $xcb_shm_libs $xcb_xfixes_libs"
4630 fi
4631
4632 if enabled x11grab; then
4633     enabled xlib || die "ERROR: Xlib not found"
4634     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
4635     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
4636 fi
4637
4638 enabled vaapi && enabled xlib &&
4639     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
4640     enable vaapi_x11
4641
4642 enabled vdpau &&
4643     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4644     disable vdpau
4645
4646 enabled vdpau && enabled xlib &&
4647     check_func_headers "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4648     prepend avconv_libs $($ldflags_filter "-lvdpau") &&
4649     enable vdpau_x11
4650
4651 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4652
4653 # add some useful compiler flags if supported
4654 check_cflags -Wdeclaration-after-statement
4655 check_cflags -Wall
4656 check_cflags -Wdisabled-optimization
4657 check_cflags -Wpointer-arith
4658 check_cflags -Wredundant-decls
4659 check_cflags -Wwrite-strings
4660 check_cflags -Wtype-limits
4661 check_cflags -Wundef
4662 check_cflags -Wmissing-prototypes
4663 check_cflags -Wstrict-prototypes
4664 enabled extra_warnings && check_cflags -Winline
4665 enabled extra_warnings && check_cflags -Wcast-qual
4666
4667 check_disable_warning(){
4668     warning_flag=-W${1#-Wno-}
4669     test_cflags $warning_flag && add_cflags $1
4670 }
4671
4672 check_disable_warning -Wno-parentheses
4673 check_disable_warning -Wno-switch
4674 check_disable_warning -Wno-format-zero-length
4675 check_disable_warning -Wno-pointer-sign
4676
4677 # add some linker flags
4678 check_ldflags -Wl,--warn-common
4679 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4680 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
4681 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4682
4683 # add some strip flags
4684 # -wN '..@*' is more selective than -x, but not available everywhere.
4685 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4686
4687 enabled neon_clobber_test &&
4688     check_ldflags -Wl,--wrap,avcodec_open2              \
4689                   -Wl,--wrap,avcodec_decode_audio4      \
4690                   -Wl,--wrap,avcodec_decode_video2      \
4691                   -Wl,--wrap,avcodec_decode_subtitle2   \
4692                   -Wl,--wrap,avcodec_encode_audio2      \
4693                   -Wl,--wrap,avcodec_encode_video2      \
4694                   -Wl,--wrap,avcodec_encode_subtitle    \
4695                   -Wl,--wrap,avresample_convert ||
4696     disable neon_clobber_test
4697
4698 enabled xmm_clobber_test &&
4699     check_ldflags -Wl,--wrap,avcodec_open2              \
4700                   -Wl,--wrap,avcodec_decode_audio4      \
4701                   -Wl,--wrap,avcodec_decode_video2      \
4702                   -Wl,--wrap,avcodec_decode_subtitle2   \
4703                   -Wl,--wrap,avcodec_encode_audio2      \
4704                   -Wl,--wrap,avcodec_encode_video2      \
4705                   -Wl,--wrap,avcodec_encode_subtitle    \
4706                   -Wl,--wrap,avresample_convert         \
4707                   -Wl,--wrap,sws_scale ||
4708     disable xmm_clobber_test
4709
4710 echo "X { local: *; };" > $TMPV
4711 if test_ldflags -Wl,--version-script,$TMPV; then
4712     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4713 elif test_ldflags -Wl,-M,$TMPV; then
4714     append SHFLAGS '-Wl,-M,\$(SUBDIR)lib\$(NAME).ver-sol2'
4715 fi
4716
4717 check_cc <<EOF && enable symver_asm_label
4718 void ff_foo(void) __asm__ ("av_foo@VERSION");
4719 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4720 EOF
4721     check_cc <<EOF && enable symver_gnu_asm
4722 __asm__(".symver ff_foo,av_foo@VERSION");
4723 void ff_foo(void) {}
4724 EOF
4725
4726 if [ -z "$optflags" ]; then
4727     if enabled small; then
4728         optflags=$cflags_size
4729     elif enabled optimizations; then
4730         optflags=$cflags_speed
4731     else
4732         optflags=$cflags_noopt
4733     fi
4734 fi
4735
4736 check_optflags(){
4737     check_cflags "$@"
4738     enabled lto && check_ldflags "$@"
4739 }
4740
4741
4742 if enabled lto; then
4743     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4744     check_cflags  -flto
4745     check_ldflags -flto $cpuflags
4746 fi
4747
4748 check_optflags $optflags
4749 check_optflags -fno-math-errno
4750 check_optflags -fno-signed-zeros
4751
4752 if enabled icc; then
4753     # Just warnings, no remarks
4754     check_cflags -w1
4755     # -wd: Disable following warnings
4756     # 144, 167, 556: -Wno-pointer-sign
4757     # 1292: attribute "foo" ignored
4758     # 1419: external declaration in primary source file
4759     # 10006: ignoring unknown option -fno-signed-zeros
4760     # 10148: ignoring unknown option -Wno-parentheses
4761     # 10156: ignoring option '-W'; no argument required
4762     check_cflags -wd144,167,556,1292,1419,10006,10148,10156
4763     # 11030: Warning unknown option --as-needed
4764     # 10156: ignoring option '-export'; no argument required
4765     check_ldflags -wd10156,11030
4766     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4767     enable ebp_available
4768     if enabled x86_32; then
4769         icc_version=$($cc -dumpversion)
4770         test ${icc_version%%.*} -ge 11 &&
4771             check_cflags -falign-stack=maintain-16-byte ||
4772             disable aligned_stack
4773     fi
4774 elif enabled ccc; then
4775     # disable some annoying warnings
4776     add_cflags -msg_disable bitnotint
4777     add_cflags -msg_disable mixfuncvoid
4778     add_cflags -msg_disable nonstandcast
4779     add_cflags -msg_disable unsupieee
4780 elif enabled gcc; then
4781     check_optflags -fno-tree-vectorize
4782     check_cflags -Werror=implicit-function-declaration
4783     check_cflags -Werror=missing-prototypes
4784     check_cflags -Werror=return-type
4785     check_cflags -Werror=declaration-after-statement
4786     check_cflags -Werror=vla
4787     check_cflags -Werror=format-security
4788     check_cflags -fdiagnostics-color=auto
4789     enabled extra_warnings || check_disable_warning -Wno-maybe-uninitialized
4790 elif enabled llvm_gcc; then
4791     check_cflags -mllvm -stack-alignment=16
4792 elif enabled clang; then
4793     check_cflags -mllvm -stack-alignment=16
4794     check_cflags -Qunused-arguments
4795     check_cflags -Werror=implicit-function-declaration
4796     check_cflags -Werror=missing-prototypes
4797     check_cflags -Werror=return-type
4798 elif enabled cparser; then
4799     add_cflags -Wno-missing-variable-declarations
4800     add_cflags -Wno-empty-statement
4801 elif enabled armcc; then
4802     add_cflags -W${armcc_opt},--diag_suppress=4343 # hardfp compat
4803     add_cflags -W${armcc_opt},--diag_suppress=3036 # using . as system include dir
4804     # 2523: use of inline assembly is deprecated
4805     add_cflags -W${armcc_opt},--diag_suppress=2523
4806     add_cflags -W${armcc_opt},--diag_suppress=1207
4807     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4808     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4809     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4810     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4811 elif enabled tms470; then