configure: Log name and parameters of all helper functions where it makes sense
[libav.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [config.log]
81   --disable-logging        do not log configure debug information
82   --prefix=PREFIX          install in PREFIX [$prefix_default]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --enable-rpath           use rpath when linking programs (USE WITH CARE)
91
92 Licensing options:
93   --enable-gpl             allow use of GPL code, the resulting libs
94                            and binaries will be under GPL [no]
95   --enable-version3        upgrade (L)GPL to version 3 [no]
96   --enable-nonfree         allow use of nonfree code, the resulting libs
97                            and binaries will be unredistributable [no]
98
99 Configuration options:
100   --disable-static         do not build static libraries [no]
101   --enable-shared          build shared libraries [no]
102   --enable-small           optimize for size instead of speed
103   --enable-runtime-cpudetect detect CPU capabilities at runtime (bigger binary)
104   --enable-gray            enable full grayscale support (slower color)
105   --disable-swscale-alpha  disable alpha channel support in swscale
106   --disable-all            disable building components, libraries and programs
107
108 Program options:
109   --disable-programs       do not build command line programs
110   --disable-avconv         disable avconv build
111   --disable-avplay         disable avplay build
112   --disable-avprobe        disable avprobe build
113   --disable-avserver       deprecated, does nothing
114
115 Component options:
116   --disable-doc            do not build documentation
117   --disable-pod2man        do not build manual pages
118   --disable-texi2html      do not build HTML documentation
119   --disable-avdevice       disable libavdevice build
120   --disable-avcodec        disable libavcodec build
121   --disable-avformat       disable libavformat build
122   --disable-avutil         disable libavutil build
123   --disable-swscale        disable libswscale build
124   --disable-avfilter       disable video filter support [no]
125   --disable-avresample     disable libavresample build [no]
126   --disable-pthreads       disable pthreads [auto]
127   --disable-w32threads     disable Win32 threads [auto]
128   --disable-network        disable network support [no]
129   --disable-dct            disable DCT code
130   --disable-error-resilience disable error resilience code
131   --disable-lsp            disable LSP code
132   --disable-lzo            disable LZO decoder code
133   --disable-mdct           disable MDCT code
134   --disable-rdft           disable RDFT code
135   --disable-fft            disable FFT code
136   --disable-faan           disable floating point AAN (I)DCT code
137
138 Individual component options:
139   --disable-everything     disable all components listed below
140   --disable-encoder=NAME   disable encoder NAME
141   --enable-encoder=NAME    enable encoder NAME
142   --disable-encoders       disable all encoders
143   --disable-decoder=NAME   disable decoder NAME
144   --enable-decoder=NAME    enable decoder NAME
145   --disable-decoders       disable all decoders
146   --disable-hwaccel=NAME   disable hwaccel NAME
147   --enable-hwaccel=NAME    enable hwaccel NAME
148   --disable-hwaccels       disable all hwaccels
149   --disable-muxer=NAME     disable muxer NAME
150   --enable-muxer=NAME      enable muxer NAME
151   --disable-muxers         disable all muxers
152   --disable-demuxer=NAME   disable demuxer NAME
153   --enable-demuxer=NAME    enable demuxer NAME
154   --disable-demuxers       disable all demuxers
155   --enable-parser=NAME     enable parser NAME
156   --disable-parser=NAME    disable parser NAME
157   --disable-parsers        disable all parsers
158   --enable-bsf=NAME        enable bitstream filter NAME
159   --disable-bsf=NAME       disable bitstream filter NAME
160   --disable-bsfs           disable all bitstream filters
161   --enable-protocol=NAME   enable protocol NAME
162   --disable-protocol=NAME  disable protocol NAME
163   --disable-protocols      disable all protocols
164   --enable-indev=NAME      enable input device NAME
165   --disable-indev=NAME     disable input device NAME
166   --disable-indevs         disable input devices
167   --enable-outdev=NAME     enable output device NAME
168   --disable-outdev=NAME    disable output device NAME
169   --disable-outdevs        disable output devices
170   --disable-devices        disable all devices
171   --enable-filter=NAME     enable filter NAME
172   --disable-filter=NAME    disable filter NAME
173   --disable-filters        disable all filters
174
175 External library support:
176
177   Using any of the following switches will allow Libav to link to the
178   corresponding external library. All the components depending on that library
179   will become enabled, if all their other dependencies are met and they are not
180   explicitly disabled. E.g. --enable-libwavpack will enable linking to
181   libwavpack and allow the libwavpack encoder to be built, unless it is
182   specifically disabled with --disable-encoder=libwavpack.
183
184   Note that only the system libraries are auto-detected. All the other external
185   libraries must be explicitly enabled.
186
187   Also note that the following help text describes the purpose of the libraries
188   themselves, not all their features will necessarily be usable by Libav.
189
190   --enable-avisynth          video frameserver
191   --enable-bzlib             bzip2 compression [autodetect]
192   --enable-frei0r            video filtering plugins
193   --enable-gnutls            crypto
194   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
195   --enable-libcdio           audio CD input
196   --enable-libdc1394         IEEE 1394/Firewire camera input
197   --enable-libdcadec         DCA audio decoding
198   --enable-libfaac           AAC audio encoding
199   --enable-libfdk-aac        AAC audio encoding/decoding
200   --enable-libfontconfig     font configuration and management
201   --enable-libfreetype       font rendering
202   --enable-libgsm            GSM audio encoding/decoding
203   --enable-libhdcd           HDCD decoding filter
204   --enable-libilbc           ILBC audio encoding/decoding
205   --enable-libkvazaar        HEVC video encoding
206   --enable-libmp3lame        MP3 audio encoding
207   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
208   --enable-libopencore-amrwb AMR-WB audio decoding
209   --enable-libopencv         computer vision
210   --enable-libopenh264       H.264 video encoding/decoding
211   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
212   --enable-libopus           Opus audio encoding/decoding
213   --enable-libpulse          Pulseaudio sound server
214   --enable-librtmp           RTMP streaming
215   --enable-libschroedinger   Dirac video encoding/decoding
216   --enable-libsnappy         snappy compression
217   --enable-libspeex          Speex audio encoding/decoding
218   --enable-libtheora         Theora video encoding/decoding
219   --enable-libtwolame        MP2 audio encoding
220   --enable-libvo-aacenc      AAC audio encoding
221   --enable-libvo-amrwbenc    AMR-WB audio encoding
222   --enable-libvorbis         Vorbis audio encoding/decoding
223   --enable-libvpx            VP* video encoding/decoding
224   --enable-libwavpack        Wavpack audio encoding/decoding
225   --enable-libwebp           WebP image encoding/decoding
226   --enable-libx264           H.264 video encoding
227   --enable-libx265           HEVC video encoding
228   --enable-libxavs           Chinese AVS video encoding
229   --enable-libxcb            X window system protocol communication
230   --enable-libxcb-shm        X11 shm communication [auto]
231   --enable-libxcb-xfixes     X11 mouse rendering [auto]
232   --enable-libxvid           MPEG-4 ASP video encoding
233   --enable-openssl           crypto
234   --enable-zlib              compression [autodetect]
235
236   The following libraries provide various hardware acceleration features:
237   --enable-cuda    Nvidia CUDA (dynamically linked)
238   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
239   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
240   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
241   --enable-libnpp  Nvidia CUDA processing
242   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
243   --enable-nvenc   Nvidia video encoding
244   --enable-omx     OpenMAX IL
245   --enable-omx-rpi OpenMAX IL for Raspberry Pi
246   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
247   --enable-vda     Apple Video Decode Acceleration [auto]
248   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
249
250 Toolchain options:
251   --arch=ARCH              select architecture [$arch]
252   --cpu=CPU                select the minimum required CPU (affects
253                            instruction selection, may crash on older CPUs)
254   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
255   --enable-cross-compile   assume a cross-compiler is used
256   --sysroot=PATH           root of cross-build tree
257   --sysinclude=PATH        location of cross-build system headers
258   --target-os=OS           compiler targets OS [$target_os]
259   --target-exec=CMD        command to run executables on target
260   --target-path=DIR        path to view of build directory on target
261   --target-samples=DIR     path to samples directory on target
262   --toolchain=NAME         set tool defaults according to NAME
263   --nm=NM                  use nm tool
264   --ar=AR                  use archive tool AR [$ar_default]
265   --as=AS                  use assembler AS [$as_default]
266   --cc=CC                  use C compiler CC [$cc_default]
267   --objcc=OCC              use ObjC compiler OCC [$cc_default]
268   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
269   --ld=LD                  use linker LD
270   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
271   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
272   --host-cc=HOSTCC         use host C compiler HOSTCC
273   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
274   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
275   --host-ld=HOSTLD         use host linker HOSTLD
276   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
277   --host-libs=HLIBS        use libs HLIBS when linking for host
278   --host-os=OS             compiler host OS [$target_os]
279   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
280   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
281   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
282   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
283   --extra-libs=ELIBS       add ELIBS [$ELIBS]
284   --extra-version=STRING   version string suffix []
285   --optflags=OPTFLAGS      override optimization-related compiler flags
286   --build-suffix=SUFFIX    library name suffix []
287   --enable-pic             build position-independent code
288   --enable-thumb           compile for Thumb instruction set
289   --enable-lto             use link-time optimization
290   --env="ENV=override"     override the environment variables
291
292 Advanced options (experts only):
293   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
294   --custom-allocator=NAME  use a supported custom allocator
295   --disable-symver         disable symbol versioning
296   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
297   --disable-safe-bitstream-reader
298                            disable buffer boundary checking in bitreaders
299                            (faster, but may crash)
300   --enable-sram            allow use of on-chip SRAM
301
302 Optimization options (experts only):
303   --disable-asm            disable all assembly optimizations
304   --disable-altivec        disable AltiVec optimizations
305   --disable-vsx            disable VSX optimizations
306   --disable-power8         disable POWER8 optimizations
307   --disable-amd3dnow       disable 3DNow! optimizations
308   --disable-amd3dnowext    disable 3DNow! extended optimizations
309   --disable-mmx            disable MMX optimizations
310   --disable-mmxext         disable MMXEXT optimizations
311   --disable-sse            disable SSE optimizations
312   --disable-sse2           disable SSE2 optimizations
313   --disable-sse3           disable SSE3 optimizations
314   --disable-ssse3          disable SSSE3 optimizations
315   --disable-sse4           disable SSE4 optimizations
316   --disable-sse42          disable SSE4.2 optimizations
317   --disable-avx            disable AVX optimizations
318   --disable-xop            disable XOP optimizations
319   --disable-fma3           disable FMA3 optimizations
320   --disable-fma4           disable FMA4 optimizations
321   --disable-avx2           disable AVX2 optimizations
322   --disable-armv5te        disable armv5te optimizations
323   --disable-armv6          disable armv6 optimizations
324   --disable-armv6t2        disable armv6t2 optimizations
325   --disable-vfp            disable VFP optimizations
326   --disable-neon           disable NEON optimizations
327   --disable-inline-asm     disable use of inline assembly
328   --disable-yasm           disable use of nasm/yasm assembly
329
330 Developer options (useful when working on Libav itself):
331   --disable-debug          disable debugging symbols
332   --enable-debug=LEVEL     set the debug level [$debuglevel]
333   --disable-optimizations  disable compiler optimizations
334   --enable-extra-warnings  enable more compiler warnings
335   --samples=PATH           location of test samples for FATE, if not set use
336                            \$LIBAV_SAMPLES at make invocation time.
337   --enable-neon-clobber-test check NEON registers for clobbering (should be
338                            used only for debugging purposes)
339   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
340                            should be used only for debugging purposes)
341   --enable-random          randomly enable/disable components
342   --disable-random
343   --enable-random=LIST     randomly enable/disable specific components or
344   --disable-random=LIST    component groups. LIST is a comma-separated list
345                            of NAME[:PROB] entries where NAME is a component
346                            (group) and PROB the probability associated with
347                            NAME (default 0.5).
348   --random-seed=VALUE      seed value for --enable/disable-random
349   --disable-valgrind-backtrace do not print a backtrace under Valgrind
350                            (only applies to --disable-optimizations builds)
351
352 NOTE: Object files are built at the place where configure is launched.
353 EOF
354   exit 0
355 }
356
357 quotes='""'
358
359 log(){
360     echo "$@" >> $logfile
361 }
362
363 log_file(){
364     log BEGIN $1
365     i=1
366     while read line; do
367         printf '%5s   %s\n' "${i}" "${line}"
368         i=$(($i+1))
369     done < $1 >> $logfile
370     log END $1
371 }
372
373 echolog(){
374     log "$@"
375     echo "$@"
376 }
377
378 warn(){
379     log "WARNING: $*"
380     WARNINGS="${WARNINGS}WARNING: $*\n"
381 }
382
383 die(){
384     echolog "$@"
385     cat <<EOF
386
387 If you think configure made a mistake, make sure you are using the latest
388 version from Git.  If the latest version fails, report the problem to the
389 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
390 EOF
391     if disabled logging; then
392         cat <<EOF
393 Rerun configure with logging enabled (do not use --disable-logging), and
394 include the log this produces with your report.
395 EOF
396     else
397         cat <<EOF
398 Include the log file "$logfile" produced by configure as this will help
399 solving the problem.
400 EOF
401     fi
402     exit 1
403 }
404
405 # Avoid locale weirdness, besides we really just want to translate ASCII.
406 toupper(){
407     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
408 }
409
410 tolower(){
411     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
412 }
413
414 c_escape(){
415     echo "$*" | sed 's/["\\]/\\\0/g'
416 }
417
418 sh_quote(){
419     v=$(echo "$1" | sed "s/'/'\\\\''/g")
420     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
421     echo "$v"
422 }
423
424 cleanws(){
425     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
426 }
427
428 filter(){
429     pat=$1
430     shift
431     for v; do
432         eval "case $v in $pat) echo $v ;; esac"
433     done
434 }
435
436 filter_out(){
437     pat=$1
438     shift
439     for v; do
440         eval "case $v in $pat) ;; *) echo $v ;; esac"
441     done
442 }
443
444 map(){
445     m=$1
446     shift
447     for v; do eval $m; done
448 }
449
450 add_suffix(){
451     suffix=$1
452     shift
453     for v; do echo ${v}${suffix}; done
454 }
455
456 set_all(){
457     value=$1
458     shift
459     for var in $*; do
460         eval $var=$value
461     done
462 }
463
464 set_weak(){
465     value=$1
466     shift
467     for var; do
468         eval : \${$var:=$value}
469     done
470 }
471
472 sanitize_var_name(){
473     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
474 }
475
476 set_safe(){
477     var=$1
478     shift
479     eval $(sanitize_var_name "$var")='$*'
480 }
481
482 get_safe(){
483     eval echo \$$(sanitize_var_name "$1")
484 }
485
486 pushvar(){
487     for pvar in $*; do
488         eval level=\${${pvar}_level:=0}
489         eval ${pvar}_${level}="\$$pvar"
490         eval ${pvar}_level=$(($level+1))
491     done
492 }
493
494 popvar(){
495     for pvar in $*; do
496         eval level=\${${pvar}_level:-0}
497         test $level = 0 && continue
498         eval level=$(($level-1))
499         eval $pvar="\${${pvar}_${level}}"
500         eval ${pvar}_level=$level
501         eval unset ${pvar}_${level}
502     done
503 }
504
505 enable(){
506     set_all yes $*
507 }
508
509 disable(){
510     set_all no $*
511 }
512
513 enable_weak(){
514     set_weak yes $*
515 }
516
517 disable_weak(){
518     set_weak no $*
519 }
520
521 enable_safe(){
522     for var; do
523         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
524     done
525 }
526
527 disable_safe(){
528     for var; do
529         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
530     done
531 }
532
533 do_enable_deep(){
534     for var; do
535         enabled $var && continue
536         eval sel="\$${var}_select"
537         eval sgs="\$${var}_suggest"
538         pushvar var sgs
539         enable_deep $sel
540         popvar sgs
541         enable_deep_weak $sgs
542         popvar var
543     done
544 }
545
546 enable_deep(){
547     do_enable_deep $*
548     enable $*
549 }
550
551 enable_deep_weak(){
552     for var; do
553         disabled $var && continue
554         pushvar var
555         do_enable_deep $var
556         popvar var
557         enable_weak $var
558     done
559 }
560
561 enabled(){
562     test "${1#!}" = "$1" && op== || op=!=
563     eval test "x\$${1#!}" $op "xyes"
564 }
565
566 disabled(){
567     test "${1#!}" = "$1" && op== || op=!=
568     eval test "x\$${1#!}" $op "xno"
569 }
570
571 enabled_all(){
572     for opt; do
573         enabled $opt || return 1
574     done
575 }
576
577 disabled_all(){
578     for opt; do
579         disabled $opt || return 1
580     done
581 }
582
583 enabled_any(){
584     for opt; do
585         enabled $opt && return 0
586     done
587 }
588
589 disabled_any(){
590     for opt; do
591         disabled $opt && return 0
592     done
593     return 1
594 }
595
596 set_default(){
597     for opt; do
598         eval : \${$opt:=\$${opt}_default}
599     done
600 }
601
602 is_in(){
603     value=$1
604     shift
605     for var in $*; do
606         [ $var = $value ] && return 0
607     done
608     return 1
609 }
610
611 do_check_deps(){
612     for cfg; do
613         cfg="${cfg#!}"
614         enabled ${cfg}_checking && die "Circular dependency for $cfg."
615         disabled ${cfg}_checking && continue
616         enable ${cfg}_checking
617         append allopts $cfg
618
619         eval dep_all="\$${cfg}_deps"
620         eval dep_any="\$${cfg}_deps_any"
621         eval dep_sel="\$${cfg}_select"
622         eval dep_sgs="\$${cfg}_suggest"
623         eval dep_ifa="\$${cfg}_if"
624         eval dep_ifn="\$${cfg}_if_any"
625
626         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
627         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
628         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
629
630         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
631         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
632         enabled_all  $dep_all || disable $cfg
633         enabled_any  $dep_any || disable $cfg
634         disabled_any $dep_sel && disable $cfg
635
636         if enabled $cfg; then
637             enable_deep $dep_sel
638             enable_deep_weak $dep_sgs
639         fi
640
641         disable ${cfg}_checking
642     done
643 }
644
645 check_deps(){
646     unset allopts
647
648     do_check_deps "$@"
649
650     for cfg in $allopts; do
651         enabled $cfg || continue
652         eval dep_extralibs="\$${cfg}_extralibs"
653         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
654     done
655 }
656
657 print_config(){
658     pfx=$1
659     files=$2
660     shift 2
661     map 'eval echo "$v \${$v:-no}"' "$@" |
662     awk "BEGIN { split(\"$files\", files) }
663         {
664             c = \"$pfx\" toupper(\$1);
665             v = \$2;
666             sub(/yes/, 1, v);
667             sub(/no/,  0, v);
668             for (f in files) {
669                 file = files[f];
670                 if (file ~ /\\.h\$/) {
671                     printf(\"#define %s %d\\n\", c, v) >>file;
672                 } else if (file ~ /\\.asm\$/) {
673                     printf(\"%%define %s %d\\n\", c, v) >>file;
674                 } else if (file ~ /\\.mak\$/) {
675                     n = -v ? \"\" : \"!\";
676                     printf(\"%s%s=yes\\n\", n, c) >>file;
677                 }
678             }
679         }"
680 }
681
682 print_enabled(){
683     suf=$1
684     shift
685     for v; do
686         enabled $v && printf "%s\n" ${v%$suf}
687     done
688 }
689
690 append(){
691     var=$1
692     shift
693     eval "$var=\"\$$var $*\""
694 }
695
696 prepend(){
697     var=$1
698     shift
699     eval "$var=\"$* \$$var\""
700 }
701
702 unique(){
703     var=$1
704     uniq_list=""
705     for tok in $(eval echo \$$var); do
706         uniq_list="$(filter_out $tok $uniq_list) $tok"
707     done
708     eval "$var=\"${uniq_list}\""
709 }
710
711 add_cppflags(){
712     append CPPFLAGS "$@"
713 }
714
715 add_cflags(){
716     append CFLAGS $($cflags_filter "$@")
717 }
718
719 add_asflags(){
720     append ASFLAGS $($asflags_filter "$@")
721 }
722
723 add_objcflags(){
724     append OBJCFLAGS $($objcflags_filter "$@")
725 }
726
727 add_ldflags(){
728     append LDFLAGS $($ldflags_filter "$@")
729 }
730
731 add_ldexeflags(){
732     append LDEXEFLAGS $($ldflags_filter "$@")
733 }
734
735 add_stripflags(){
736     append STRIPFLAGS "$@"
737 }
738
739 add_extralibs(){
740     prepend extralibs $($ldflags_filter "$@")
741 }
742
743 add_host_cppflags(){
744     append host_cppflags "$@"
745 }
746
747 add_host_cflags(){
748     append host_cflags $($host_cflags_filter "$@")
749 }
750
751 add_host_ldflags(){
752     append host_ldflags $($host_ldflags_filter "$@")
753 }
754
755 add_compat(){
756     append compat_objs $1
757     shift
758     map 'add_cppflags -D$v' "$@"
759 }
760
761 check_cmd(){
762     log "$@"
763     "$@" >> $logfile 2>&1
764 }
765
766 cc_o(){
767     eval printf '%s\\n' $CC_O
768 }
769
770 cc_e(){
771     eval printf '%s\\n' $CC_E
772 }
773
774 check_cc(){
775     log check_cc "$@"
776     cat > $TMPC
777     log_file $TMPC
778     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
779 }
780
781 check_objcc(){
782     log check_objcc "$@"
783     cat > $TMPC
784     log_file $TMPC
785     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
786 }
787
788 check_cpp(){
789     log check_cpp "$@"
790     cat > $TMPC
791     log_file $TMPC
792     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
793 }
794
795 as_o(){
796     eval printf '%s\\n' $AS_O
797 }
798
799 check_as(){
800     log check_as "$@"
801     cat > $TMPS
802     log_file $TMPS
803     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
804 }
805
806 check_inline_asm(){
807     log check_inline_asm "$@"
808     name="$1"
809     code="$2"
810     shift 2
811     disable $name
812     check_cc "$@" <<EOF && enable $name
813 void foo(void){ __asm__ volatile($code); }
814 EOF
815 }
816
817 check_insn(){
818     log check_insn "$@"
819     check_inline_asm ${1}_inline "\"$2\""
820     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
821 }
822
823 check_yasm(){
824     log check_yasm "$@"
825     echo "$1" > $TMPS
826     log_file $TMPS
827     shift 1
828     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
829 }
830
831 ld_o(){
832     eval printf '%s\\n' $LD_O
833 }
834
835 check_ld(){
836     log check_ld "$@"
837     flags=$(filter_out '-l*' "$@")
838     libs=$(filter '-l*' "$@")
839     check_cc $($cflags_filter $flags) || return
840     flags=$($ldflags_filter $flags)
841     libs=$($ldflags_filter $libs)
842     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
843 }
844
845 print_include(){
846     hdr=$1
847     test "${hdr%.h}" = "${hdr}" &&
848         echo "#include $hdr"    ||
849         echo "#include <$hdr>"
850 }
851
852 check_code(){
853     log check_code "$@"
854     check=$1
855     headers=$2
856     code=$3
857     shift 3
858     {
859         for hdr in $headers; do
860             print_include $hdr
861         done
862         echo "int main(void) { $code; return 0; }"
863     } | check_$check "$@"
864 }
865
866 check_cppflags(){
867     log check_cppflags "$@"
868     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
869 int x;
870 EOF
871 }
872
873 test_cflags(){
874     log test_cflags "$@"
875     set -- $($cflags_filter "$@")
876     check_cc "$@" <<EOF
877 int x;
878 EOF
879 }
880
881 check_cflags(){
882     log check_cflags "$@"
883     test_cflags "$@" && add_cflags "$@"
884 }
885
886 test_objcflags(){
887     log test_objcflags "$@"
888     set -- $($objcflags_filter "$@")
889     check_objcc "$@" <<EOF
890 int x;
891 EOF
892 }
893
894 check_objcflags(){
895     log check_objcflags "$@"
896     test_objcflags "$@" && add_objcflags "$@"
897 }
898
899 test_ldflags(){
900     log test_ldflags "$@"
901     check_ld "$@" <<EOF
902 int main(void){ return 0; }
903 EOF
904 }
905
906 check_ldflags(){
907     log check_ldflags "$@"
908     test_ldflags "$@" && add_ldflags "$@"
909 }
910
911 test_stripflags(){
912     log test_stripflags "$@"
913     # call check_cc to get a fresh TMPO
914     check_cc <<EOF
915 int main(void) { return 0; }
916 EOF
917     check_cmd $strip $STRIPFLAGS "$@" $TMPO
918 }
919
920 check_stripflags(){
921     log check_stripflags "$@"
922     test_stripflags "$@" && add_stripflags "$@"
923 }
924
925 check_header(){
926     log check_header "$@"
927     header=$1
928     shift
929     disable_safe $header
930     check_cpp "$@" <<EOF && enable_safe $header
931 #include <$header>
932 int x;
933 EOF
934 }
935
936 check_func(){
937     log check_func "$@"
938     func=$1
939     shift
940     disable $func
941     check_ld "$@" <<EOF && enable $func
942 extern int $func();
943 int main(void){ $func(); }
944 EOF
945 }
946
947 check_mathfunc(){
948     log check_mathfunc "$@"
949     func=$1
950     narg=$2
951     shift 2
952     test $narg = 2 && args="f, g" || args="f"
953     disable $func
954     check_ld "$@" <<EOF && enable $func
955 #include <math.h>
956 float foo(float f, float g) { return $func($args); }
957 int main(void){ return 0; }
958 EOF
959 }
960
961 check_func_headers(){
962     log check_func_headers "$@"
963     headers=$1
964     funcs=$2
965     shift 2
966     {
967         for hdr in $headers; do
968             print_include $hdr
969         done
970         for func in $funcs; do
971             echo "long check_$func(void) { return (long) $func; }"
972         done
973         echo "int main(void) { return 0; }"
974     } | check_ld "$@" && enable $funcs && enable_safe $headers
975 }
976
977 check_cpp_condition(){
978     log check_cpp_condition "$@"
979     header=$1
980     condition=$2
981     shift 2
982     check_cpp "$@" <<EOF
983 #include <$header>
984 #if !($condition)
985 #error "unsatisfied condition: $condition"
986 #endif
987 EOF
988 }
989
990 test_cflags_cpp(){
991     log test_cflags_cpp "$@"
992     flags=$1
993     condition=$2
994     shift 2
995     set -- $($cflags_filter "$flags")
996     check_cpp "$@" <<EOF
997 #if !($condition)
998 #error "unsatisfied condition: $condition"
999 #endif
1000 EOF
1001 }
1002
1003 check_lib(){
1004     log check_lib "$@"
1005     headers="$1"
1006     funcs="$2"
1007     shift 2
1008     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1009 }
1010
1011 check_pkg_config(){
1012     log check_pkg_config "$@"
1013     pkg="$1"
1014     headers="$2"
1015     funcs="$3"
1016     shift 3
1017     check_cmd $pkg_config --exists --print-errors $pkg || return
1018     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1019     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1020     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1021         set_safe "${pkg}_cflags" $pkg_cflags   &&
1022         set_safe "${pkg}_libs"   $pkg_libs
1023 }
1024
1025 check_exec(){
1026     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1027 }
1028
1029 check_exec_crash(){
1030     log check_exec_crash "$@"
1031     code=$(cat)
1032
1033     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1034     # are safe but may not be available everywhere.  Thus we use
1035     # raise(SIGTERM) instead.  The check is run in a subshell so we
1036     # can redirect the "Terminated" message from the shell.  SIGBUS
1037     # is not defined by standard C so it is used conditionally.
1038
1039     (check_exec "$@") >> $logfile 2>&1 <<EOF
1040 #include <signal.h>
1041 static void sighandler(int sig){
1042     raise(SIGTERM);
1043 }
1044 int foo(void){
1045     $code
1046 }
1047 int (*func_ptr)(void) = foo;
1048 int main(void){
1049     signal(SIGILL, sighandler);
1050     signal(SIGFPE, sighandler);
1051     signal(SIGSEGV, sighandler);
1052 #ifdef SIGBUS
1053     signal(SIGBUS, sighandler);
1054 #endif
1055     return func_ptr();
1056 }
1057 EOF
1058 }
1059
1060 check_type(){
1061     log check_type "$@"
1062     headers=$1
1063     type=$2
1064     shift 2
1065     disable_safe "$type"
1066     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1067 }
1068
1069 check_struct(){
1070     log check_struct "$@"
1071     headers=$1
1072     struct=$2
1073     member=$3
1074     shift 3
1075     disable_safe "${struct}_${member}"
1076     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1077         enable_safe "${struct}_${member}"
1078 }
1079
1080 check_builtin(){
1081     log check_builtin "$@"
1082     name=$1
1083     headers=$2
1084     builtin=$3
1085     shift 3
1086     disable "$name"
1087     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1088 }
1089
1090 check_compile_assert(){
1091     log check_compile_assert "$@"
1092     name=$1
1093     headers=$2
1094     condition=$3
1095     shift 3
1096     disable "$name"
1097     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1098 }
1099
1100 require(){
1101     log require "$@"
1102     name="$1"
1103     headers="$2"
1104     func="$3"
1105     shift 3
1106     check_lib "$headers" $func "$@" || die "ERROR: $name not found"
1107 }
1108
1109 require_pkg_config(){
1110     log require_pkg_config "$@"
1111     pkg="$1"
1112     check_pkg_config "$@" || die "ERROR: $pkg not found"
1113     add_cflags    $(get_safe "${pkg}_cflags")
1114     add_extralibs $(get_safe "${pkg}_libs")
1115 }
1116
1117 hostcc_e(){
1118     eval printf '%s\\n' $HOSTCC_E
1119 }
1120
1121 hostcc_o(){
1122     eval printf '%s\\n' $HOSTCC_O
1123 }
1124
1125 check_host_cc(){
1126     log check_host_cc "$@"
1127     cat > $TMPC
1128     log_file $TMPC
1129     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1130 }
1131
1132 check_host_cpp(){
1133     log check_host_cpp "$@"
1134     cat > $TMPC
1135     log_file $TMPC
1136     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1137 }
1138
1139 check_host_cppflags(){
1140     log check_host_cppflags "$@"
1141     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1142 int x;
1143 EOF
1144 }
1145
1146 check_host_cflags(){
1147     log check_host_cflags "$@"
1148     set -- $($host_cflags_filter "$@")
1149     check_host_cc "$@" <<EOF && append host_cflags "$@"
1150 int x;
1151 EOF
1152 }
1153
1154 check_host_cpp_condition(){
1155     log check_host_cpp_condition "$@"
1156     header=$1
1157     condition=$2
1158     shift 2
1159     check_host_cpp "$@" <<EOF
1160 #include <$header>
1161 #if !($condition)
1162 #error "unsatisfied condition: $condition"
1163 #endif
1164 EOF
1165 }
1166
1167 apply(){
1168     file=$1
1169     shift
1170     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1171 }
1172
1173 cp_if_changed(){
1174     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1175     mkdir -p "$(dirname $2)"
1176     $cp_f "$1" "$2"
1177 }
1178
1179 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1180 # system-dependent things.
1181
1182 AVCODEC_COMPONENTS="
1183     bsfs
1184     decoders
1185     encoders
1186     hwaccels
1187     parsers
1188 "
1189
1190 AVDEVICE_COMPONENTS="
1191     indevs
1192     outdevs
1193 "
1194 AVFILTER_COMPONENTS="
1195     filters
1196 "
1197 AVFORMAT_COMPONENTS="
1198     demuxers
1199     muxers
1200     protocols
1201 "
1202
1203 AVRESAMPLE_COMPONENTS=""
1204 AVUTIL_COMPONENTS=""
1205
1206 COMPONENT_LIST="
1207     $AVCODEC_COMPONENTS
1208     $AVDEVICE_COMPONENTS
1209     $AVFILTER_COMPONENTS
1210     $AVFORMAT_COMPONENTS
1211     $AVRESAMPLE_COMPONENTS
1212     $AVUTIL_COMPONENTS
1213 "
1214
1215 EXAMPLE_LIST="
1216     decode_audio_example
1217     decode_video_example
1218     encode_audio_example
1219     encode_video_example
1220     filter_audio_example
1221     metadata_example
1222     output_example
1223     qsvdec_example
1224     transcode_aac_example
1225 "
1226
1227 HWACCEL_LIBRARY_NONFREE_LIST="
1228     cuda
1229     libnpp
1230 "
1231 HWACCEL_LIBRARY_LIST="
1232     $HWACCEL_LIBRARY_NONFREE_LIST
1233     d3d11va
1234     dxva2
1235     libmfx
1236     mmal
1237     nvenc
1238     omx
1239     vaapi
1240     vda
1241     vdpau
1242 "
1243
1244 EXTERNAL_LIBRARY_GPL_LIST="
1245     libcdio
1246     libx264
1247     libx265
1248     libxavs
1249     libxvid
1250 "
1251
1252 EXTERNAL_LIBRARY_NONFREE_LIST="
1253     libfaac
1254     libfdk_aac
1255     openssl
1256 "
1257
1258 EXTERNAL_LIBRARY_VERSION3_LIST="
1259     libopencore_amrnb
1260     libopencore_amrwb
1261     libvo_aacenc
1262     libvo_amrwbenc
1263 "
1264
1265 EXTERNAL_LIBRARY_LIST="
1266     $EXTERNAL_LIBRARY_GPL_LIST
1267     $EXTERNAL_LIBRARY_NONFREE_LIST
1268     $EXTERNAL_LIBRARY_VERSION3_LIST
1269     avisynth
1270     bzlib
1271     frei0r
1272     gnutls
1273     libbs2b
1274     libdc1394
1275     libdcadec
1276     libfontconfig
1277     libfreetype
1278     libgsm
1279     libhdcd
1280     libilbc
1281     libkvazaar
1282     libmp3lame
1283     libopencv
1284     libopenh264
1285     libopenjpeg
1286     libopus
1287     libpulse
1288     librtmp
1289     libschroedinger
1290     libsnappy
1291     libspeex
1292     libtheora
1293     libtwolame
1294     libvorbis
1295     libvpx
1296     libwavpack
1297     libwebp
1298     libxcb
1299     libxcb_shm
1300     libxcb_xfixes
1301     zlib
1302 "
1303
1304 FEATURE_LIST="
1305     gray
1306     hardcoded_tables
1307     omx_rpi
1308     runtime_cpudetect
1309     safe_bitstream_reader
1310     shared
1311     small
1312     sram
1313     static
1314     swscale_alpha
1315 "
1316
1317 LIBRARY_LIST="
1318     avcodec
1319     avdevice
1320     avfilter
1321     avformat
1322     avresample
1323     avutil
1324     swscale
1325 "
1326
1327 LICENSE_LIST="
1328     gpl
1329     nonfree
1330     version3
1331 "
1332
1333 PROGRAM_LIST="
1334     avconv
1335     avplay
1336     avprobe
1337 "
1338
1339 SUBSYSTEM_LIST="
1340     dct
1341     doc
1342     error_resilience
1343     faan
1344     fft
1345     lsp
1346     lzo
1347     mdct
1348     network
1349     rdft
1350 "
1351
1352 CONFIG_LIST="
1353     $COMPONENT_LIST
1354     $EXAMPLE_LIST
1355     $EXTERNAL_LIBRARY_LIST
1356     $HWACCEL_LIBRARY_LIST
1357     $FEATURE_LIST
1358     $LICENSE_LIST
1359     $LIBRARY_LIST
1360     $PROGRAM_LIST
1361     $SUBSYSTEM_LIST
1362     neon_clobber_test
1363     pic
1364     pod2man
1365     texi2html
1366     thumb
1367     valgrind_backtrace
1368     xmm_clobber_test
1369 "
1370
1371 THREADS_LIST="
1372     pthreads
1373     w32threads
1374 "
1375
1376 ATOMICS_LIST="
1377     atomics_gcc
1378     atomics_suncc
1379     atomics_win32
1380 "
1381
1382 ARCH_LIST="
1383     aarch64
1384     alpha
1385     arm
1386     avr32
1387     avr32_ap
1388     avr32_uc
1389     bfin
1390     ia64
1391     m68k
1392     mips
1393     mips64
1394     parisc
1395     ppc
1396     ppc64
1397     s390
1398     sh4
1399     sparc
1400     sparc64
1401     tilegx
1402     tilepro
1403     tomi
1404     x86
1405     x86_32
1406     x86_64
1407 "
1408
1409 ARCH_EXT_LIST_ARM="
1410     armv5te
1411     armv6
1412     armv6t2
1413     armv8
1414     neon
1415     vfp
1416     vfpv3
1417 "
1418
1419 ARCH_EXT_LIST_X86_SIMD="
1420     amd3dnow
1421     amd3dnowext
1422     avx
1423     avx2
1424     fma3
1425     fma4
1426     mmx
1427     mmxext
1428     sse
1429     sse2
1430     sse3
1431     sse4
1432     sse42
1433     ssse3
1434     xop
1435 "
1436
1437 ARCH_EXT_LIST_PPC="
1438     altivec
1439     dcbzl
1440     ldbrx
1441     power8
1442     ppc4xx
1443     vsx
1444 "
1445
1446 ARCH_EXT_LIST_X86="
1447     $ARCH_EXT_LIST_X86_SIMD
1448     cpunop
1449     i686
1450 "
1451
1452 ARCH_EXT_LIST_MIPS="
1453     loongson
1454     mips32r1
1455     mips64r1
1456     mips32r2
1457     mips64r2
1458     mips32r6
1459     mips64r6
1460 "
1461
1462 ARCH_EXT_LIST="
1463     $ARCH_EXT_LIST_ARM
1464     $ARCH_EXT_LIST_MIPS
1465     $ARCH_EXT_LIST_PPC
1466     $ARCH_EXT_LIST_X86
1467     vis
1468 "
1469
1470 ARCH_FEATURES="
1471     aligned_stack
1472     fast_64bit
1473     fast_clz
1474     fast_cmov
1475     local_aligned_8
1476     local_aligned_16
1477     local_aligned_32
1478     simd_align_16
1479     simd_align_32
1480 "
1481
1482 BUILTIN_LIST="
1483     atomic_cas_ptr
1484     machine_rw_barrier
1485     MemoryBarrier
1486     mm_empty
1487     rdtsc
1488     sem_timedwait
1489     sync_val_compare_and_swap
1490 "
1491 HAVE_LIST_CMDLINE="
1492     inline_asm
1493     symver
1494     yasm
1495 "
1496
1497 HAVE_LIST_PUB="
1498     bigendian
1499     fast_unaligned
1500 "
1501
1502 HEADERS_LIST="
1503     AVFoundation_AVFoundation_h
1504     alsa_asoundlib_h
1505     altivec_h
1506     arpa_inet_h
1507     cdio_paranoia_h
1508     cdio_paranoia_paranoia_h
1509     dispatch_dispatch_h
1510     dev_bktr_ioctl_bt848_h
1511     dev_bktr_ioctl_meteor_h
1512     dev_ic_bt8xx_h
1513     dev_video_bktr_ioctl_bt848_h
1514     dev_video_meteor_ioctl_meteor_h
1515     direct_h
1516     dlfcn_h
1517     d3d11_h
1518     dxva_h
1519     gsm_h
1520     io_h
1521     mach_mach_time_h
1522     machine_ioctl_bt848_h
1523     machine_ioctl_meteor_h
1524     malloc_h
1525     poll_h
1526     sndio_h
1527     soundcard_h
1528     stdatomic_h
1529     sys_mman_h
1530     sys_param_h
1531     sys_resource_h
1532     sys_select_h
1533     sys_soundcard_h
1534     sys_time_h
1535     sys_un_h
1536     sys_videoio_h
1537     unistd_h
1538     valgrind_valgrind_h
1539     windows_h
1540     winsock2_h
1541 "
1542
1543 INTRINSICS_LIST="
1544     intrinsics_neon
1545 "
1546
1547 MATH_FUNCS="
1548     atanf
1549     atan2f
1550     cbrtf
1551     cosf
1552     exp2
1553     exp2f
1554     expf
1555     isinf
1556     isnan
1557     ldexpf
1558     llrint
1559     llrintf
1560     log2
1561     log2f
1562     log10f
1563     lrint
1564     lrintf
1565     powf
1566     rint
1567     round
1568     roundf
1569     sinf
1570     trunc
1571     truncf
1572 "
1573
1574 SYSTEM_FUNCS="
1575     aligned_malloc
1576     clock_gettime
1577     closesocket
1578     CommandLineToArgvW
1579     CoTaskMemFree
1580     CryptGenRandom
1581     dlopen
1582     fcntl
1583     flt_lim
1584     fork
1585     getaddrinfo
1586     gethrtime
1587     getopt
1588     GetProcessAffinityMask
1589     GetProcessMemoryInfo
1590     GetProcessTimes
1591     getrusage
1592     GetSystemTimeAsFileTime
1593     gettimeofday
1594     gmtime_r
1595     inet_aton
1596     isatty
1597     jack_port_get_latency_range
1598     LoadLibrary
1599     localtime_r
1600     mach_absolute_time
1601     MapViewOfFile
1602     memalign
1603     mkstemp
1604     mmap
1605     mprotect
1606     nanosleep
1607     posix_memalign
1608     sched_getaffinity
1609     SetConsoleTextAttribute
1610     setmode
1611     setrlimit
1612     Sleep
1613     strerror_r
1614     sysconf
1615     sysctl
1616     usleep
1617     VirtualAlloc
1618 "
1619
1620 TOOLCHAIN_FEATURES="
1621     as_dn_directive
1622     as_fpu_directive
1623     as_func
1624     as_object_arch
1625     asm_mod_q
1626     attribute_may_alias
1627     attribute_packed
1628     ebp_available
1629     ebx_available
1630     gnu_as
1631     ibm_asm
1632     inline_asm_labels
1633     pragma_deprecated
1634     symver_asm_label
1635     symver_gnu_asm
1636     vfp_args
1637     xform_asm
1638     xmm_clobbers
1639 "
1640
1641 TYPES_LIST="
1642     CONDITION_VARIABLE_Ptr
1643     socklen_t
1644     struct_addrinfo
1645     struct_group_source_req
1646     struct_ip_mreq_source
1647     struct_ipv6_mreq
1648     struct_pollfd
1649     struct_rusage_ru_maxrss
1650     struct_sockaddr_in6
1651     struct_sockaddr_sa_len
1652     struct_sockaddr_storage
1653     struct_v4l2_frmivalenum_discrete
1654 "
1655
1656 HAVE_LIST="
1657     $ARCH_EXT_LIST
1658     $(add_suffix _external $ARCH_EXT_LIST)
1659     $(add_suffix _inline   $ARCH_EXT_LIST)
1660     $ARCH_FEATURES
1661     $BUILTIN_LIST
1662     $HAVE_LIST_CMDLINE
1663     $HAVE_LIST_PUB
1664     $HEADERS_LIST
1665     $INTRINSICS_LIST
1666     $MATH_FUNCS
1667     $SYSTEM_FUNCS
1668     $THREADS_LIST
1669     $TOOLCHAIN_FEATURES
1670     $TYPES_LIST
1671     dos_paths
1672     dxva2_lib
1673     libc_msvcrt
1674     libdc1394_1
1675     libdc1394_2
1676     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1677     sdl
1678     section_data_rel_ro
1679     threads
1680     vaapi_drm
1681     vaapi_x11
1682     vdpau_x11
1683     xlib
1684 "
1685
1686 # options emitted with CONFIG_ prefix but not available on the command line
1687 CONFIG_EXTRA="
1688     aandcttables
1689     ac3dsp
1690     audio_frame_queue
1691     audiodsp
1692     blockdsp
1693     bswapdsp
1694     cabac
1695     dirac_parse
1696     dvprofile
1697     faandct
1698     faanidct
1699     fdctdsp
1700     flacdsp
1701     fmtconvert
1702     g722dsp
1703     gcrypt
1704     gmp
1705     golomb
1706     gplv3
1707     h263dsp
1708     h264chroma
1709     h264dsp
1710     h264parse
1711     h264pred
1712     h264qpel
1713     hpeldsp
1714     huffman
1715     huffyuvdsp
1716     huffyuvencdsp
1717     idctdsp
1718     iirfilter
1719     imdct15
1720     intrax8
1721     iso_media
1722     ividsp
1723     jpegtables
1724     libx262
1725     lgplv3
1726     lpc
1727     lzf
1728     me_cmp
1729     mpeg_er
1730     mpegaudio
1731     mpegaudiodsp
1732     mpegvideo
1733     mpegvideoenc
1734     mss34dsp
1735     pixblockdsp
1736     qpeldsp
1737     qsv
1738     qsvdec
1739     qsvenc
1740     rangecoder
1741     riffdec
1742     riffenc
1743     rtpdec
1744     rtpenc_chain
1745     rv34dsp
1746     sinewin
1747     snappy
1748     srtp
1749     startcode
1750     texturedsp
1751     texturedspenc
1752     tpeldsp
1753     vaapi_encode
1754     vc1dsp
1755     videodsp
1756     vp3dsp
1757     vp56dsp
1758     vp8dsp
1759     wma_freqs
1760     wmv2dsp
1761 "
1762
1763 CMDLINE_SELECT="
1764     $ARCH_EXT_LIST
1765     $CONFIG_LIST
1766     $HAVE_LIST_CMDLINE
1767     $THREADS_LIST
1768     asm
1769     cross_compile
1770     debug
1771     extra_warnings
1772     logging
1773     lto
1774     optimizations
1775     rpath
1776 "
1777
1778 PATHS_LIST="
1779     bindir
1780     datadir
1781     docdir
1782     incdir
1783     libdir
1784     mandir
1785     prefix
1786     shlibdir
1787 "
1788
1789 CMDLINE_SET="
1790     $PATHS_LIST
1791     ar
1792     arch
1793     as
1794     build_suffix
1795     cc
1796     objcc
1797     cpu
1798     cross_prefix
1799     custom_allocator
1800     dep_cc
1801     env
1802     extra_version
1803     host_cc
1804     host_cflags
1805     host_ld
1806     host_ldflags
1807     host_libs
1808     host_os
1809     ld
1810     logfile
1811     malloc_prefix
1812     nm
1813     optflags
1814     pkg_config
1815     pkg_config_flags
1816     random_seed
1817     samples
1818     sysinclude
1819     sysroot
1820     target_exec
1821     target_os
1822     target_path
1823     target_samples
1824     toolchain
1825 "
1826
1827 CMDLINE_APPEND="
1828     extra_cflags
1829     extra_objcflags
1830     host_cppflags
1831 "
1832
1833 # code dependency declarations
1834
1835 # architecture extensions
1836
1837 armv5te_deps="arm"
1838 armv6_deps="arm"
1839 armv6t2_deps="arm"
1840 armv8_deps="aarch64"
1841 neon_deps_any="aarch64 arm"
1842 intrinsics_neon_deps="neon"
1843 vfp_deps_any="aarch64 arm"
1844 vfpv3_deps="vfp"
1845
1846 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1847
1848 altivec_deps="ppc"
1849 ppc4xx_deps="ppc"
1850 vsx_deps="altivec"
1851 power8_deps="vsx"
1852
1853 cpunop_deps="i686"
1854 x86_64_select="i686"
1855 x86_64_suggest="fast_cmov"
1856
1857 amd3dnow_deps="mmx"
1858 amd3dnowext_deps="amd3dnow"
1859 i686_deps="x86"
1860 mmx_deps="x86"
1861 mmxext_deps="mmx"
1862 sse_deps="mmxext"
1863 sse2_deps="sse"
1864 sse3_deps="sse2"
1865 ssse3_deps="sse3"
1866 sse4_deps="ssse3"
1867 sse42_deps="sse4"
1868 avx_deps="sse42"
1869 xop_deps="avx"
1870 fma3_deps="avx"
1871 fma4_deps="avx"
1872 avx2_deps="avx"
1873
1874 mmx_external_deps="yasm"
1875 mmx_inline_deps="inline_asm"
1876 mmx_suggest="mmx_external mmx_inline"
1877
1878 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1879     eval dep=\$${ext}_deps
1880     eval ${ext}_external_deps='"${dep}_external"'
1881     eval ${ext}_inline_deps='"${dep}_inline"'
1882     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1883 done
1884
1885 aligned_stack_if_any="aarch64 ppc x86"
1886 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1887 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1888 fast_unaligned_if_any="aarch64 ppc x86"
1889 simd_align_16_if_any="altivec neon sse"
1890 simd_align_32_if_any="avx"
1891
1892 # system capabilities
1893 symver_if_any="symver_asm_label symver_gnu_asm"
1894 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1895
1896 # threading support
1897 atomics_gcc_if="sync_val_compare_and_swap"
1898 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1899 atomics_win32_if="MemoryBarrier"
1900 atomics_native_if_any="$ATOMICS_LIST"
1901 w32threads_deps="atomics_native"
1902 threads_if_any="$THREADS_LIST"
1903
1904 # subsystems
1905 dct_select="rdft"
1906 dirac_parse_select="golomb"
1907 error_resilience_select="me_cmp"
1908 faandct_deps="faan fdctdsp"
1909 faanidct_deps="faan idctdsp"
1910 h264dsp_select="startcode"
1911 intrax8_select="blockdsp idctdsp"
1912 mdct_select="fft"
1913 rdft_select="fft"
1914 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1915 mpeg_er_select="error_resilience"
1916 mpegaudio_select="mpegaudiodsp"
1917 mpegaudiodsp_select="dct"
1918 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1919 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1920 vc1dsp_select="h264chroma qpeldsp startcode"
1921
1922 # decoders / encoders
1923 aac_decoder_select="imdct15 mdct sinewin"
1924 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1925 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1926 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1927 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1928 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1929 adpcm_g722_decoder_select="g722dsp"
1930 adpcm_g722_encoder_select="g722dsp"
1931 aic_decoder_select="golomb idctdsp"
1932 alac_encoder_select="lpc"
1933 als_decoder_select="bswapdsp"
1934 amrnb_decoder_select="lsp"
1935 amrwb_decoder_select="lsp"
1936 amv_decoder_select="sp5x_decoder"
1937 ape_decoder_select="bswapdsp"
1938 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1939 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1940 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1941 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1942 atrac1_decoder_select="mdct sinewin"
1943 atrac3_decoder_select="mdct"
1944 atrac3p_decoder_select="mdct sinewin"
1945 bink_decoder_select="blockdsp hpeldsp"
1946 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1947 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1948 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1949 cllc_decoder_select="bswapdsp"
1950 comfortnoise_encoder_select="lpc"
1951 cook_decoder_select="audiodsp mdct sinewin"
1952 cscd_decoder_select="lzo"
1953 cscd_decoder_suggest="zlib"
1954 dca_decoder_select="fmtconvert mdct"
1955 dds_decoder_select="texturedsp"
1956 dnxhd_decoder_select="blockdsp idctdsp"
1957 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1958 dvvideo_decoder_select="dvprofile idctdsp"
1959 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1960 dxa_decoder_deps="zlib"
1961 dxv_decoder_select="lzf texturedsp"
1962 eac3_decoder_select="ac3_decoder"
1963 eac3_encoder_select="ac3_encoder"
1964 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1965 eatgq_decoder_select="aandcttables idctdsp"
1966 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
1967 exr_decoder_deps="zlib"
1968 ffv1_decoder_select="golomb rangecoder"
1969 ffv1_encoder_select="rangecoder"
1970 ffvhuff_decoder_select="huffyuv_decoder"
1971 ffvhuff_encoder_select="huffyuv_encoder"
1972 fic_decoder_select="golomb"
1973 flac_decoder_select="flacdsp golomb"
1974 flac_encoder_select="bswapdsp flacdsp golomb lpc"
1975 flashsv_decoder_deps="zlib"
1976 flashsv_encoder_deps="zlib"
1977 flashsv2_decoder_deps="zlib"
1978 flv_decoder_select="h263_decoder"
1979 flv_encoder_select="h263_encoder"
1980 fourxm_decoder_select="blockdsp bswapdsp"
1981 fraps_decoder_select="bswapdsp huffman"
1982 g2m_decoder_deps="zlib"
1983 g2m_decoder_select="blockdsp idctdsp jpegtables"
1984 h261_decoder_select="mpeg_er mpegvideo"
1985 h261_encoder_select="aandcttables mpegvideoenc"
1986 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1987 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1988 h263i_decoder_select="h263_decoder"
1989 h263p_encoder_select="h263_encoder"
1990 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
1991 h264_decoder_suggest="error_resilience"
1992 hap_decoder_select="snappy texturedsp"
1993 hap_encoder_deps="libsnappy"
1994 hap_encoder_select="texturedspenc"
1995 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1996 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1997 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1998 iac_decoder_select="imc_decoder"
1999 imc_decoder_select="bswapdsp fft mdct sinewin"
2000 indeo3_decoder_select="hpeldsp"
2001 indeo4_decoder_select="ividsp"
2002 indeo5_decoder_select="ividsp"
2003 interplay_video_decoder_select="hpeldsp"
2004 jpegls_decoder_select="golomb mjpeg_decoder"
2005 jpegls_encoder_select="golomb"
2006 jv_decoder_select="blockdsp"
2007 lagarith_decoder_select="huffyuvdsp"
2008 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2009 loco_decoder_select="golomb"
2010 magicyuv_decoder_select="huffyuvdsp"
2011 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2012 metasound_decoder_select="lsp mdct sinewin"
2013 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2014 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2015 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2016 mjpegb_decoder_select="mjpeg_decoder"
2017 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2018 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2019 mlp_decoder_select="mlp_parser"
2020 motionpixels_decoder_select="bswapdsp"
2021 mp1_decoder_select="mpegaudio"
2022 mp1float_decoder_select="mpegaudio"
2023 mp2_decoder_select="mpegaudio"
2024 mp2float_decoder_select="mpegaudio"
2025 mp3_decoder_select="mpegaudio"
2026 mp3adu_decoder_select="mpegaudio"
2027 mp3adufloat_decoder_select="mpegaudio"
2028 mp3float_decoder_select="mpegaudio"
2029 mp3on4_decoder_select="mpegaudio"
2030 mp3on4float_decoder_select="mpegaudio"
2031 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2032 mpc8_decoder_select="mpegaudiodsp"
2033 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2034 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2035 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2036 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2037 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2038 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2039 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2040 mpeg4_encoder_select="h263_encoder"
2041 msa1_decoder_select="mss34dsp"
2042 msmpeg4v1_decoder_select="h263_decoder"
2043 msmpeg4v2_decoder_select="h263_decoder"
2044 msmpeg4v2_encoder_select="h263_encoder"
2045 msmpeg4v3_decoder_select="h263_decoder"
2046 msmpeg4v3_encoder_select="h263_encoder"
2047 mss2_decoder_select="error_resilience mpeg_er mpegvideo vc1_decoder"
2048 mts2_decoder_select="mss34dsp"
2049 mxpeg_decoder_select="mjpeg_decoder"
2050 nellymoser_decoder_select="mdct sinewin"
2051 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2052 nuv_decoder_select="idctdsp lzo"
2053 on2avc_decoder_select="mdct"
2054 opus_decoder_deps="avresample"
2055 opus_decoder_select="imdct15"
2056 png_decoder_deps="zlib"
2057 png_encoder_deps="zlib"
2058 png_encoder_select="huffyuvencdsp"
2059 prores_decoder_select="idctdsp"
2060 prores_encoder_select="fdctdsp"
2061 qcelp_decoder_select="lsp"
2062 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2063 ra_144_encoder_select="audio_frame_queue lpc"
2064 ralf_decoder_select="golomb"
2065 rscc_decoder_deps="zlib"
2066 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2067 rv10_encoder_select="h263_encoder"
2068 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2069 rv20_encoder_select="h263_encoder"
2070 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2071 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2072 screenpresso_decoder_deps="zlib"
2073 shorten_decoder_select="golomb"
2074 sipr_decoder_select="lsp"
2075 sp5x_decoder_select="mjpeg_decoder"
2076 svq1_decoder_select="hpeldsp"
2077 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2078 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2079 svq3_decoder_suggest="zlib"
2080 tak_decoder_select="audiodsp"
2081 tdsc_decoder_deps="zlib"
2082 tdsc_decoder_select="mjpeg_decoder"
2083 theora_decoder_select="vp3_decoder"
2084 thp_decoder_select="mjpeg_decoder"
2085 tiff_decoder_suggest="zlib"
2086 tiff_encoder_suggest="zlib"
2087 truehd_decoder_select="mlp_decoder"
2088 truemotion2_decoder_select="bswapdsp"
2089 truespeech_decoder_select="bswapdsp"
2090 tscc_decoder_deps="zlib"
2091 txd_decoder_select="texturedsp"
2092 twinvq_decoder_select="mdct lsp sinewin"
2093 utvideo_decoder_select="bswapdsp"
2094 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2095 vble_decoder_select="huffyuvdsp"
2096 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2097 vc1image_decoder_select="vc1_decoder"
2098 vorbis_decoder_select="mdct"
2099 vorbis_encoder_select="mdct"
2100 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2101 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2102 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2103 vp6a_decoder_select="vp6_decoder"
2104 vp6f_decoder_select="vp6_decoder"
2105 vp7_decoder_select="h264pred videodsp vp8dsp"
2106 vp8_decoder_select="h264pred videodsp vp8dsp"
2107 vp9_decoder_select="videodsp"
2108 webp_decoder_select="vp8_decoder"
2109 wmapro_decoder_select="mdct sinewin wma_freqs"
2110 wmav1_decoder_select="mdct sinewin wma_freqs"
2111 wmav1_encoder_select="mdct sinewin wma_freqs"
2112 wmav2_decoder_select="mdct sinewin wma_freqs"
2113 wmav2_encoder_select="mdct sinewin wma_freqs"
2114 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2115 wmv1_decoder_select="h263_decoder"
2116 wmv1_encoder_select="h263_encoder"
2117 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2118 wmv2_encoder_select="h263_encoder wmv2dsp"
2119 wmv3_decoder_select="vc1_decoder"
2120 wmv3image_decoder_select="wmv3_decoder"
2121 zerocodec_decoder_deps="zlib"
2122 zlib_decoder_deps="zlib"
2123 zlib_encoder_deps="zlib"
2124 zmbv_decoder_deps="zlib"
2125 zmbv_encoder_deps="zlib"
2126
2127 # hardware accelerators
2128 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2129 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2130 vaapi_deps="va_va_h"
2131 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2132 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2133 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2134
2135 h263_vaapi_hwaccel_deps="vaapi"
2136 h263_vaapi_hwaccel_select="h263_decoder"
2137 h264_d3d11va_hwaccel_deps="d3d11va"
2138 h264_d3d11va_hwaccel_select="h264_decoder"
2139 h264_dxva2_hwaccel_deps="dxva2"
2140 h264_dxva2_hwaccel_select="h264_decoder"
2141 h264_mmal_decoder_deps="mmal"
2142 h264_mmal_decoder_select="mmal"
2143 h264_mmal_hwaccel_deps="mmal"
2144 h264_omx_encoder_deps="omx"
2145 h264_qsv_hwaccel_deps="libmfx"
2146 h264_vaapi_hwaccel_deps="vaapi"
2147 h264_vaapi_hwaccel_select="h264_decoder"
2148 h264_vda_hwaccel_deps="vda"
2149 h264_vda_hwaccel_select="h264_decoder"
2150 h264_vda_old_hwaccel_deps="vda"
2151 h264_vda_old_hwaccel_select="h264_decoder"
2152 h264_vdpau_hwaccel_deps="vdpau"
2153 h264_vdpau_hwaccel_select="h264_decoder"
2154 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2155 hevc_d3d11va_hwaccel_select="hevc_decoder"
2156 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2157 hevc_dxva2_hwaccel_select="hevc_decoder"
2158 hevc_qsv_hwaccel_deps="libmfx"
2159 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2160 hevc_vdpau_hwaccel_select="hevc_decoder"
2161 mpeg1_vdpau_hwaccel_deps="vdpau"
2162 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2163 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2164 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2165 mpeg2_dxva2_hwaccel_deps="dxva2"
2166 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2167 mpeg2_mmal_decoder_deps="mmal"
2168 mpeg2_mmal_decoder_select="mmal"
2169 mpeg2_mmal_hwaccel_deps="mmal"
2170 mpeg2_qsv_hwaccel_deps="libmfx"
2171 mpeg2_vaapi_hwaccel_deps="vaapi"
2172 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2173 mpeg2_vdpau_hwaccel_deps="vdpau"
2174 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2175 mpeg4_omx_encoder_deps="omx"
2176 mpeg4_vaapi_hwaccel_deps="vaapi"
2177 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2178 mpeg4_vdpau_hwaccel_deps="vdpau"
2179 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2180 vc1_d3d11va_hwaccel_deps="d3d11va"
2181 vc1_d3d11va_hwaccel_select="vc1_decoder"
2182 vc1_dxva2_hwaccel_deps="dxva2"
2183 vc1_dxva2_hwaccel_select="vc1_decoder"
2184 vc1_mmal_decoder_deps="mmal"
2185 vc1_mmal_decoder_select="mmal"
2186 vc1_mmal_hwaccel_deps="mmal"
2187 vc1_vaapi_hwaccel_deps="vaapi"
2188 vc1_vaapi_hwaccel_select="vc1_decoder"
2189 vc1_vdpau_hwaccel_deps="vdpau"
2190 vc1_vdpau_hwaccel_select="vc1_decoder"
2191 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2192 vp8_vaapi_hwaccel_select="vp8_decoder"
2193 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2194 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2195 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2196 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2197
2198 # hardware-accelerated codecs
2199 nvenc_deps_any="dlopen LoadLibrary"
2200 nvenc_extralibs='$ldl'
2201 omx_deps="dlopen pthreads"
2202 omx_extralibs='$ldl'
2203 qsvdec_select="qsv"
2204 qsvenc_select="qsv"
2205 vaapi_encode_deps="vaapi"
2206
2207 hwupload_cuda_filter_deps="cuda"
2208 scale_npp_filter_deps="cuda libnpp"
2209
2210 h264_nvenc_encoder_deps="nvenc"
2211 h264_qsv_decoder_deps="libmfx"
2212 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2213 h264_qsv_encoder_deps="libmfx"
2214 h264_qsv_encoder_select="qsvenc"
2215 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2216 h264_vaapi_encoder_select="vaapi_encode golomb"
2217
2218 hevc_nvenc_encoder_deps="nvenc"
2219 hevc_qsv_decoder_deps="libmfx"
2220 hevc_qsv_encoder_deps="libmfx"
2221 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2222 hevc_qsv_encoder_select="qsvenc"
2223 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2224 hevc_vaapi_encoder_select="vaapi_encode golomb"
2225 mpeg2_qsv_decoder_deps="libmfx"
2226 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2227 mpeg2_qsv_encoder_deps="libmfx"
2228 mpeg2_qsv_encoder_select="qsvenc"
2229
2230 nvenc_h264_encoder_deps="nvenc"
2231 nvenc_hevc_encoder_deps="nvenc"
2232
2233 # parsers
2234 h264_parser_select="golomb h264dsp h264parse"
2235 hevc_parser_select="golomb"
2236 mpegvideo_parser_select="mpegvideo"
2237 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2238 vc1_parser_select="vc1dsp"
2239
2240 # bitstream_filters
2241 mjpeg2jpeg_bsf_select="jpegtables"
2242
2243 # external libraries
2244 libdcadec_decoder_deps="libdcadec"
2245 libfaac_encoder_deps="libfaac"
2246 libfaac_encoder_select="audio_frame_queue"
2247 libfdk_aac_decoder_deps="libfdk_aac"
2248 libfdk_aac_encoder_deps="libfdk_aac"
2249 libfdk_aac_encoder_select="audio_frame_queue"
2250 libgsm_decoder_deps="libgsm"
2251 libgsm_encoder_deps="libgsm"
2252 libgsm_ms_decoder_deps="libgsm"
2253 libgsm_ms_encoder_deps="libgsm"
2254 libilbc_decoder_deps="libilbc"
2255 libilbc_encoder_deps="libilbc"
2256 libkvazaar_encoder_deps="libkvazaar"
2257 libmp3lame_encoder_deps="libmp3lame"
2258 libmp3lame_encoder_select="audio_frame_queue"
2259 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2260 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2261 libopencore_amrnb_encoder_select="audio_frame_queue"
2262 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2263 libopenh264_decoder_deps="libopenh264"
2264 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2265 libopenh264_encoder_deps="libopenh264"
2266 libopenjpeg_decoder_deps="libopenjpeg"
2267 libopenjpeg_encoder_deps="libopenjpeg"
2268 libopus_decoder_deps="libopus"
2269 libopus_encoder_deps="libopus"
2270 libopus_encoder_select="audio_frame_queue"
2271 libschroedinger_decoder_deps="libschroedinger"
2272 libschroedinger_encoder_deps="libschroedinger"
2273 libspeex_decoder_deps="libspeex"
2274 libspeex_encoder_deps="libspeex"
2275 libspeex_encoder_select="audio_frame_queue"
2276 libtheora_encoder_deps="libtheora"
2277 libtwolame_encoder_deps="libtwolame"
2278 libvo_aacenc_encoder_deps="libvo_aacenc"
2279 libvo_aacenc_encoder_select="audio_frame_queue"
2280 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2281 libvorbis_encoder_deps="libvorbis"
2282 libvorbis_encoder_select="audio_frame_queue"
2283 libvpx_vp8_decoder_deps="libvpx"
2284 libvpx_vp8_encoder_deps="libvpx"
2285 libvpx_vp9_decoder_deps="libvpx"
2286 libvpx_vp9_encoder_deps="libvpx"
2287 libwavpack_encoder_deps="libwavpack"
2288 libwebp_encoder_deps="libwebp"
2289 libx262_encoder_deps="libx262"
2290 libx264_encoder_deps="libx264"
2291 libx265_encoder_deps="libx265"
2292 libxavs_encoder_deps="libxavs"
2293 libxvid_encoder_deps="libxvid"
2294
2295 # demuxers / muxers
2296 ac3_demuxer_select="ac3_parser"
2297 asf_demuxer_select="riffdec"
2298 asf_muxer_select="riffenc"
2299 asf_stream_muxer_select="asf_muxer"
2300 avi_demuxer_select="iso_media riffdec"
2301 avi_muxer_select="riffenc"
2302 avisynth_demuxer_deps="avisynth"
2303 avisynth_demuxer_select="riffdec"
2304 caf_demuxer_select="iso_media riffdec"
2305 dash_muxer_select="mp4_muxer"
2306 dirac_demuxer_select="dirac_parser"
2307 dv_demuxer_select="dvprofile"
2308 dv_muxer_select="dvprofile"
2309 dxa_demuxer_select="riffdec"
2310 eac3_demuxer_select="ac3_parser"
2311 f4v_muxer_select="mov_muxer"
2312 flac_demuxer_select="flac_parser"
2313 hds_muxer_select="flv_muxer"
2314 hls_muxer_select="mpegts_muxer"
2315 ipod_muxer_select="mov_muxer"
2316 ismv_muxer_select="mov_muxer"
2317 matroska_audio_muxer_select="matroska_muxer"
2318 matroska_demuxer_select="iso_media riffdec"
2319 matroska_demuxer_suggest="bzlib lzo zlib"
2320 matroska_muxer_select="iso_media riffenc"
2321 mmf_muxer_select="riffenc"
2322 mov_demuxer_select="iso_media riffdec"
2323 mov_demuxer_suggest="zlib"
2324 mov_muxer_select="iso_media riffenc rtpenc_chain"
2325 mp3_demuxer_select="mpegaudio_parser"
2326 mp4_muxer_select="mov_muxer"
2327 mpegts_demuxer_select="iso_media"
2328 mpegts_muxer_select="adts_muxer latm_muxer"
2329 mpegtsraw_demuxer_select="mpegts_demuxer"
2330 mxf_d10_muxer_select="mxf_muxer"
2331 nut_muxer_select="riffenc"
2332 nuv_demuxer_select="riffdec"
2333 oga_muxer_select="ogg_muxer"
2334 ogg_demuxer_select="dirac_parse"
2335 opus_muxer_select="ogg_muxer"
2336 psp_muxer_select="mov_muxer"
2337 rtp_demuxer_select="sdp_demuxer"
2338 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2339 rtsp_demuxer_select="http_protocol rtpdec"
2340 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2341 sap_demuxer_select="sdp_demuxer"
2342 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2343 sdp_demuxer_select="rtpdec"
2344 smoothstreaming_muxer_select="ismv_muxer"
2345 spdif_muxer_select="aac_parser"
2346 spx_muxer_select="ogg_muxer"
2347 swf_demuxer_suggest="zlib"
2348 tak_demuxer_select="tak_parser"
2349 tg2_muxer_select="mov_muxer"
2350 tgp_muxer_select="mov_muxer"
2351 w64_demuxer_select="wav_demuxer"
2352 wav_demuxer_select="riffdec"
2353 wav_muxer_select="riffenc"
2354 webm_muxer_select="iso_media riffenc"
2355 webm_muxer_suggest="libopus_encoder libvorbis_encoder libvpx_vp8_encoder libvpx_vp9_encoder"
2356 wtv_demuxer_select="mpegts_demuxer riffdec"
2357 xmv_demuxer_select="riffdec"
2358 xwma_demuxer_select="riffdec"
2359
2360 # indevs / outdevs
2361 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2362 alsa_outdev_deps="alsa_asoundlib_h"
2363 avfoundation_indev_deps="AVFoundation_AVFoundation_h"
2364 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2365 dv1394_indev_deps="dv1394"
2366 dv1394_indev_select="dv_demuxer"
2367 fbdev_indev_deps="linux_fb_h"
2368 jack_indev_deps="jack_jack_h"
2369 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2370 libcdio_indev_deps="libcdio"
2371 libdc1394_indev_deps="libdc1394"
2372 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2373 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2374 pulse_indev_deps="libpulse"
2375 sndio_indev_deps="sndio_h"
2376 sndio_outdev_deps="sndio_h"
2377 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2378 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2379 vfwcap_indev_extralibs="-lavicap32"
2380 xcbgrab_indev_deps="libxcb"
2381
2382 # protocols
2383 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2384 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2385 ffrtmpcrypt_protocol_select="tcp_protocol"
2386 ffrtmphttp_protocol_deps="!librtmp_protocol"
2387 ffrtmphttp_protocol_select="http_protocol"
2388 gopher_protocol_select="network"
2389 http_protocol_select="tcp_protocol"
2390 httpproxy_protocol_select="tcp_protocol"
2391 https_protocol_select="tls_protocol"
2392 icecast_protocol_select="http_protocol"
2393 librtmp_protocol_deps="librtmp"
2394 librtmpe_protocol_deps="librtmp"
2395 librtmps_protocol_deps="librtmp"
2396 librtmpt_protocol_deps="librtmp"
2397 librtmpte_protocol_deps="librtmp"
2398 mmsh_protocol_select="http_protocol"
2399 mmst_protocol_select="network"
2400 rtmp_protocol_deps="!librtmp_protocol"
2401 rtmp_protocol_select="tcp_protocol"
2402 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2403 rtmps_protocol_deps="!librtmp_protocol"
2404 rtmps_protocol_select="tls_protocol"
2405 rtmpt_protocol_select="ffrtmphttp_protocol"
2406 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2407 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2408 rtp_protocol_select="udp_protocol"
2409 sctp_protocol_deps="struct_sctp_event_subscribe"
2410 sctp_protocol_select="network"
2411 srtp_protocol_select="rtp_protocol srtp"
2412 tcp_protocol_select="network"
2413 tls_gnutls_protocol_deps="gnutls"
2414 tls_gnutls_protocol_select="tcp_protocol"
2415 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2416 tls_openssl_protocol_select="tcp_protocol"
2417 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2418 udp_protocol_select="network"
2419 unix_protocol_deps="sys_un_h"
2420 unix_protocol_select="network"
2421
2422 # filters
2423 blackframe_filter_deps="gpl"
2424 boxblur_filter_deps="gpl"
2425 bs2b_filter_deps="libbs2b"
2426 cropdetect_filter_deps="gpl"
2427 deinterlace_qsv_filter_deps="libmfx"
2428 delogo_filter_deps="gpl"
2429 drawtext_filter_deps="libfreetype"
2430 frei0r_filter_deps="frei0r dlopen"
2431 frei0r_filter_extralibs='$ldl'
2432 frei0r_src_filter_deps="frei0r dlopen"
2433 frei0r_src_filter_extralibs='$ldl'
2434 hdcd_filter_deps="libhdcd"
2435 hqdn3d_filter_deps="gpl"
2436 interlace_filter_deps="gpl"
2437 ocv_filter_deps="libopencv"
2438 resample_filter_deps="avresample"
2439 scale_filter_deps="swscale"
2440 scale_qsv_filter_deps="libmfx"
2441 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2442
2443 # examples
2444 decode_audio_example_deps="avcodec avutil"
2445 decode_video_example_deps="avcodec avutil"
2446 encode_audio_example_deps="avcodec avutil"
2447 encode_video_example_deps="avcodec avutil"
2448 filter_audio_example_deps="avfilter avutil"
2449 metadata_example_deps="avformat avutil"
2450 output_example_deps="avcodec avformat avutil swscale"
2451 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2452 transcode_aac_example_deps="avcodec avformat avresample"
2453
2454 # libraries, in linking order
2455 avcodec_deps="avutil"
2456 avdevice_deps="avformat avcodec avutil"
2457 avfilter_deps="avutil"
2458 avformat_deps="avcodec avutil"
2459 avresample_deps="avutil"
2460 swscale_deps="avutil"
2461
2462 # programs
2463 avconv_deps="avcodec avfilter avformat avresample swscale"
2464 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2465                fps_filter null_filter resample_filter scale_filter
2466                trim_filter"
2467 avplay_deps="avcodec avfilter avformat avresample sdl"
2468 avplay_libs='$sdl_libs'
2469 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2470 avprobe_deps="avcodec avformat"
2471
2472 # documentation
2473 pod2man_deps="doc"
2474 texi2html_deps="doc"
2475
2476 # default parameters
2477
2478 logfile="config.log"
2479
2480 # installation paths
2481 prefix_default="/usr/local"
2482 bindir_default='${prefix}/bin'
2483 datadir_default='${prefix}/share/avconv'
2484 docdir_default='${prefix}/share/doc/libav'
2485 incdir_default='${prefix}/include'
2486 libdir_default='${prefix}/lib'
2487 mandir_default='${prefix}/share/man'
2488 shlibdir_default="$libdir_default"
2489
2490 # toolchain
2491 ar_default="ar"
2492 cc_default="gcc"
2493 host_cc_default="gcc"
2494 cp_f="cp -f"
2495 ln_s="ln -s -f"
2496 nm_default="nm -g"
2497 objformat="elf"
2498 pkg_config_default=pkg-config
2499 ranlib="ranlib"
2500 strip="strip"
2501 version_script='--version-script'
2502 yasmexe="yasm"
2503
2504 # machine
2505 arch_default=$(uname -m)
2506 cpu="generic"
2507 intrinsics="none"
2508
2509 # OS
2510 target_os_default=$(tolower $(uname -s))
2511 host_os=$target_os_default
2512
2513 # configurable options
2514 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2515
2516 enable asm
2517 enable debug
2518 enable doc
2519 enable faan faandct faanidct
2520 enable optimizations
2521 enable safe_bitstream_reader
2522 enable static
2523 enable swscale_alpha
2524 enable valgrind_backtrace
2525
2526 # By default, enable only those hwaccels that have no external dependencies.
2527 enable d3d11va dxva2 vda vdpau
2528
2529 # build settings
2530 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2531 LIBPREF="lib"
2532 LIBSUF=".a"
2533 FULLNAME='$(NAME)$(BUILDSUF)'
2534 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2535 SLIBPREF="lib"
2536 SLIBSUF=".so"
2537 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2538 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2539 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2540 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2541 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2542 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2543 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2544
2545 asflags_filter=echo
2546 cflags_filter=echo
2547 ldflags_filter=echo
2548
2549 AS_C='-c'
2550 AS_O='-o $@'
2551 CC_C='-c'
2552 CC_E='-E -o $@'
2553 CC_O='-o $@'
2554 OBJCC_C='-c'
2555 OBJCC_E='-E -o $@'
2556 OBJCC_O='-o $@'
2557 LD_O='-o $@'
2558 LD_LIB='-l%'
2559 LD_PATH='-L'
2560 HOSTCC_C='-c'
2561 HOSTCC_E='-E -o $@'
2562 HOSTCC_O='-o $@'
2563 HOSTLD_O='-o $@'
2564
2565 host_libs='-lm'
2566 host_cflags_filter=echo
2567 host_ldflags_filter=echo
2568
2569 target_path='$(CURDIR)'
2570
2571 # since the object filename is not given with the -MM flag, the compiler
2572 # is only able to print the basename, and we must add the path ourselves
2573 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2574 DEPFLAGS='-MM'
2575
2576 # find source path
2577 if test -f configure; then
2578     source_path=.
2579 else
2580     source_path=$(cd $(dirname "$0"); pwd)
2581     echo "$source_path" | grep -q '[[:blank:]]' &&
2582         die "Out of tree builds are impossible with whitespace in source path."
2583     test -e "$source_path/config.h" &&
2584         die "Out of tree builds are impossible with config.h in source dir."
2585 fi
2586
2587 for v in "$@"; do
2588     r=${v#*=}
2589     l=${v%"$r"}
2590     r=$(sh_quote "$r")
2591     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2592 done
2593
2594 find_things(){
2595     thing=$1
2596     pattern=$2
2597     file=$source_path/$3
2598     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2599 }
2600
2601 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2602 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2603 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2604 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2605 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2606 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2607 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2608 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2609 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2610
2611 find_things_extern(){
2612     thing=$1
2613     pattern=$2
2614     file=$source_path/$3
2615     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2616 }
2617
2618 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2619 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2620
2621 ALL_COMPONENTS="
2622     $BSF_LIST
2623     $DECODER_LIST
2624     $DEMUXER_LIST
2625     $ENCODER_LIST
2626     $FILTER_LIST
2627     $HWACCEL_LIST
2628     $INDEV_LIST
2629     $MUXER_LIST
2630     $OUTDEV_LIST
2631     $PARSER_LIST
2632     $PROTOCOL_LIST
2633 "
2634
2635 for n in $COMPONENT_LIST; do
2636     v=$(toupper ${n%s})_LIST
2637     eval enable \$$v
2638     eval ${n}_if_any="\$$v"
2639 done
2640
2641 enable $ARCH_EXT_LIST
2642
2643 die_unknown(){
2644     echo "Unknown option \"$1\"."
2645     echo "See $0 --help for available options."
2646     exit 1
2647 }
2648
2649 print_3_columns() {
2650     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2651 }
2652
2653 show_list() {
2654     suffix=_$1
2655     shift
2656     echo $* | sed s/$suffix//g | print_3_columns
2657     exit 0
2658 }
2659
2660 rand_list(){
2661     IFS=', '
2662     set -- $*
2663     unset IFS
2664     for thing; do
2665         comp=${thing%:*}
2666         prob=${thing#$comp}
2667         prob=${prob#:}
2668         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2669         echo "prob ${prob:-0.5}"
2670         printf '%s\n' $comp
2671     done
2672 }
2673
2674 do_random(){
2675     action=$1
2676     shift
2677     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2678     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2679 }
2680
2681 for opt do
2682     optval="${opt#*=}"
2683     case "$opt" in
2684         --extra-ldflags=*)
2685             add_ldflags $optval
2686         ;;
2687         --extra-ldexeflags=*)
2688             add_ldexeflags $optval
2689         ;;
2690         --extra-libs=*)
2691             add_extralibs $optval
2692         ;;
2693         --disable-devices)
2694             disable $INDEV_LIST $OUTDEV_LIST
2695         ;;
2696         --enable-debug=*)
2697             debuglevel="$optval"
2698         ;;
2699         --disable-programs)
2700             disable $PROGRAM_LIST
2701         ;;
2702         --disable-everything)
2703             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2704         ;;
2705         --disable-all)
2706             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2707             disable $LIBRARY_LIST $PROGRAM_LIST doc
2708         ;;
2709         --enable-random|--disable-random)
2710             action=${opt%%-random}
2711             do_random ${action#--} $COMPONENT_LIST
2712         ;;
2713         --enable-random=*|--disable-random=*)
2714             action=${opt%%-random=*}
2715             do_random ${action#--} $optval
2716         ;;
2717         --enable-*=*|--disable-*=*)
2718             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2719             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2720             eval list=\$$(toupper $thing)_LIST
2721             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2722             $action $(filter "$name" $list)
2723         ;;
2724         --enable-avserver|--disable-avserver*)
2725             warn "avserver has been removed, the ${opt} option is only"\
2726                  "provided for compatibility and will be removed in the future"
2727         ;;
2728         --enable-?*|--disable-?*)
2729             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2730             if is_in $option $COMPONENT_LIST; then
2731                 test $action = disable && action=unset
2732                 eval $action \$$(toupper ${option%s})_LIST
2733             elif is_in $option $CMDLINE_SELECT; then
2734                 $action $option
2735             else
2736                 die_unknown $opt
2737             fi
2738         ;;
2739         --list-*)
2740             NAME="${opt#--list-}"
2741             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2742             NAME=${NAME%s}
2743             eval show_list $NAME \$$(toupper $NAME)_LIST
2744         ;;
2745         --help|-h) show_help
2746         ;;
2747         --quiet|-q) quiet=yes
2748         ;;
2749         *)
2750             optname="${opt%%=*}"
2751             optname="${optname#--}"
2752             optname=$(echo "$optname" | sed 's/-/_/g')
2753             if is_in $optname $CMDLINE_SET; then
2754                 eval $optname='$optval'
2755             elif is_in $optname $CMDLINE_APPEND; then
2756                 append $optname "$optval"
2757             else
2758                 die_unknown $opt
2759             fi
2760         ;;
2761     esac
2762 done
2763
2764 for e in $env; do
2765     eval "export $e"
2766 done
2767
2768 disabled logging && logfile=/dev/null
2769
2770 # Disable all the library-specific components if the library itself
2771 # is disabled, see AVCODEC_LIST and following _LIST variables.
2772
2773 disable_components(){
2774     disabled ${1} && disable $(
2775         eval components="\$$(toupper ${1})_COMPONENTS"
2776         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2777     )
2778 }
2779
2780 map 'disable_components $v' $LIBRARY_LIST
2781
2782 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2783 set >> $logfile
2784
2785 case "$toolchain" in
2786     *-asan)
2787         cc_default="${toolchain%-asan}"
2788         add_cflags  -fsanitize=address
2789         add_ldflags -fsanitize=address
2790     ;;
2791     *-msan)
2792         cc_default="${toolchain%-msan}"
2793         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2794         add_ldflags -fsanitize=memory
2795     ;;
2796     *-tsan)
2797         cc_default="${toolchain%-tsan}"
2798         add_cflags  -fsanitize=thread -pie
2799         add_ldflags -fsanitize=thread -pie
2800         case "$toolchain" in
2801             gcc-tsan)
2802                 add_cflags  -fPIC
2803                 add_ldflags -fPIC
2804                 ;;
2805         esac
2806     ;;
2807     *-usan)
2808         cc_default="${toolchain%-usan}"
2809         add_cflags  -fsanitize=undefined
2810         add_ldflags -fsanitize=undefined
2811         case "$toolchain" in
2812             clang-usan)
2813                 add_cflags -O1
2814                 ;;
2815         esac
2816     ;;
2817     valgrind-*)
2818         target_exec_default="valgrind"
2819         case "$toolchain" in
2820             valgrind-massif)
2821                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2822                 ;;
2823             valgrind-memcheck)
2824                 target_exec_args="--track-origins=yes --leak-check=full"
2825                 ;;
2826         esac
2827     ;;
2828     msvc)
2829         # Check whether the current MSVC version needs the C99 converter.
2830         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2831         # support enough of C99 to build libav. Default to the new
2832         # behaviour if the regexp was unable to match anything, since this
2833         # successfully parses the version number of existing supported
2834         # versions that require the converter (MSVC 2010 and 2012).
2835         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2836         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2837             cc_default="cl"
2838         else
2839             cc_default="c99wrap cl"
2840         fi
2841         ld_default="$source_path/compat/windows/mslink"
2842         nm_default="dumpbin -symbols"
2843         ar_default="lib"
2844         case "$arch" in
2845         arm*)
2846             as_default="armasm"
2847             ;;
2848         esac
2849         target_os_default="win32"
2850         # Use a relative path for TMPDIR. This makes sure all the
2851         # ffconf temp files are written with a relative path, avoiding
2852         # issues with msys/win32 path conversion for MSVC parameters
2853         # such as -Fo<file> or -out:<file>.
2854         TMPDIR=.
2855     ;;
2856     icl)
2857         cc_default="icl"
2858         ld_default="xilink"
2859         nm_default="dumpbin -symbols"
2860         ar_default="xilib"
2861         target_os_default="win32"
2862         TMPDIR=.
2863     ;;
2864     gcov)
2865         add_cflags  -fprofile-arcs -ftest-coverage
2866         add_ldflags -fprofile-arcs -ftest-coverage
2867     ;;
2868     llvm-cov)
2869         add_cflags -fprofile-arcs -ftest-coverage
2870         add_ldflags --coverage
2871     ;;
2872     hardened)
2873         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2874         add_cflags   -fno-strict-overflow -fstack-protector-all
2875         add_ldflags  -Wl,-z,relro -Wl,-z,now
2876     ;;
2877     ?*)
2878         die "Unknown toolchain $toolchain"
2879     ;;
2880 esac
2881
2882 test -n "$cross_prefix" && enable cross_compile
2883
2884 if enabled cross_compile; then
2885     test -n "$arch" && test -n "$target_os" ||
2886         die "Must specify target arch and OS when cross-compiling"
2887 fi
2888
2889 ar_default="${cross_prefix}${ar_default}"
2890 cc_default="${cross_prefix}${cc_default}"
2891 occ_default="${cross_prefix}${occ_default}"
2892 nm_default="${cross_prefix}${nm_default}"
2893 pkg_config_default="${cross_prefix}${pkg_config_default}"
2894 ranlib="${cross_prefix}${ranlib}"
2895 strip="${cross_prefix}${strip}"
2896
2897 sysinclude_default="${sysroot}/usr/include"
2898
2899 set_default arch cc pkg_config sysinclude target_exec target_os
2900 enabled cross_compile || host_cc_default=$cc
2901 set_default host_cc
2902
2903 if ! $pkg_config --version >/dev/null 2>&1; then
2904     warn "$pkg_config not found, library detection may fail."
2905     pkg_config=false
2906 fi
2907
2908 exesuf() {
2909     case $1 in
2910         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2911     esac
2912 }
2913
2914 EXESUF=$(exesuf $target_os)
2915 HOSTEXESUF=$(exesuf $host_os)
2916
2917 # set temporary file name
2918 : ${TMPDIR:=$TEMPDIR}
2919 : ${TMPDIR:=$TMP}
2920 : ${TMPDIR:=/tmp}
2921
2922 if ! check_cmd mktemp -u XXXXXX; then
2923     # simple replacement for missing mktemp
2924     # NOT SAFE FOR GENERAL USE
2925     mktemp(){
2926         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2927     }
2928 fi
2929
2930 tmpfile(){
2931     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2932         (set -C; exec > $tmp) 2>/dev/null ||
2933         die "Unable to create temporary file in $TMPDIR."
2934     append TMPFILES $tmp
2935     eval $1=$tmp
2936 }
2937
2938 trap 'rm -f -- $TMPFILES' EXIT
2939
2940 tmpfile TMPASM .asm
2941 tmpfile TMPC   .c
2942 tmpfile TMPE   $EXESUF
2943 tmpfile TMPH   .h
2944 tmpfile TMPO   .o
2945 tmpfile TMPS   .S
2946 tmpfile TMPSH  .sh
2947 tmpfile TMPV   .ver
2948
2949 unset -f mktemp
2950
2951 chmod +x $TMPE
2952
2953 # make sure we can execute files in $TMPDIR
2954 cat > $TMPSH 2>> $logfile <<EOF
2955 #! /bin/sh
2956 EOF
2957 chmod +x $TMPSH >> $logfile 2>&1
2958 if ! $TMPSH >> $logfile 2>&1; then
2959     cat <<EOF
2960 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2961 variable to another directory and make sure that it is not mounted noexec.
2962 EOF
2963     die "Sanity test failed."
2964 fi
2965
2966 armasm_flags(){
2967     for flag; do
2968         case $flag in
2969             # Filter out MSVC cl.exe options from cflags that shouldn't
2970             # be passed to gas-preprocessor
2971             -M[TD]*)                                            ;;
2972             *)                  echo $flag                      ;;
2973         esac
2974    done
2975 }
2976
2977 ccc_flags(){
2978     for flag; do
2979         case $flag in
2980             -std=c99)           echo -c99                       ;;
2981             -mcpu=*)            echo -arch ${flag#*=}           ;;
2982             -mieee)             echo -ieee                      ;;
2983             -O*|-fast)          echo $flag                      ;;
2984             -fno-math-errno)    echo -assume nomath_errno       ;;
2985             -g)                 echo -g3                        ;;
2986             -Wall)              echo -msg_enable level2         ;;
2987             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2988             -Wl,*)              echo $flag                      ;;
2989             -f*|-W*)                                            ;;
2990             *)                  echo $flag                      ;;
2991         esac
2992    done
2993 }
2994
2995 cparser_flags(){
2996     for flag; do
2997         case $flag in
2998             -Wno-switch)             echo -Wno-switch-enum ;;
2999             -Wno-format-zero-length) ;;
3000             -Wdisabled-optimization) ;;
3001             -Wno-pointer-sign)       echo -Wno-other ;;
3002             *)                       echo $flag ;;
3003         esac
3004     done
3005 }
3006
3007 msvc_common_flags(){
3008     for flag; do
3009         case $flag in
3010             # In addition to specifying certain flags under the compiler
3011             # specific filters, they must be specified here as well or else the
3012             # generic catch all at the bottom will print the original flag.
3013             -Wall)                ;;
3014             -std=c99)             ;;
3015             # Common flags
3016             -fomit-frame-pointer) ;;
3017             -g)                   echo -Z7 ;;
3018             -fno-math-errno)      ;;
3019             -fno-common)          ;;
3020             -fno-signed-zeros)    ;;
3021             -fPIC)                ;;
3022             -mthumb)              ;;
3023             -march=*)             ;;
3024             -lz)                  echo zlib.lib ;;
3025             -lavifil32)           echo vfw32.lib ;;
3026             -lavicap32)           echo vfw32.lib user32.lib ;;
3027             -lx264)               echo libx264.lib ;;
3028             -l*)                  echo ${flag#-l}.lib ;;
3029             -L*)                  echo -libpath:${flag#-L} ;;
3030             *)                    echo $flag ;;
3031         esac
3032     done
3033 }
3034
3035 msvc_flags(){
3036     msvc_common_flags "$@"
3037     for flag; do
3038         case $flag in
3039             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3040                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3041                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3042                                        -wd4273 -wd4554 -wd4701 ;;
3043         esac
3044     done
3045 }
3046
3047 icl_flags(){
3048     msvc_common_flags "$@"
3049     for flag; do
3050         case $flag in
3051             # Despite what Intel's documentation says -Wall, which is supported
3052             # on Windows, does enable remarks so disable them here.
3053             -Wall)                echo $flag -Qdiag-disable:remark ;;
3054             -std=c99)             echo -Qstd=c99 ;;
3055         esac
3056     done
3057 }
3058
3059 pgi_flags(){
3060     for flag; do
3061         case $flag in
3062             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3063             -fomit-frame-pointer) echo -Mnoframe ;;
3064             -g)                   echo -gopt ;;
3065             *)                    echo $flag ;;
3066         esac
3067     done
3068 }
3069
3070 suncc_flags(){
3071     for flag; do
3072         case $flag in
3073             -march=*|-mcpu=*)
3074                 case "${flag#*=}" in
3075                     native)                   echo -xtarget=native       ;;
3076                     v9|niagara)               echo -xarch=sparc          ;;
3077                     ultrasparc)               echo -xarch=sparcvis       ;;
3078                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3079                     i586|pentium)             echo -xchip=pentium        ;;
3080                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3081                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3082                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3083                     pentium4*)          echo -xtarget=pentium4           ;;
3084                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3085                     *-sse3)             echo -xarch=sse3                 ;;
3086                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3087                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3088                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3089                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3090                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3091                     k8|opteron|athlon64|athlon-fx)
3092                                                echo -xarch=sse2a         ;;
3093                     athlon*)                   echo -xarch=pentium_proa  ;;
3094                 esac
3095                 ;;
3096             -std=c99)             echo -xc99              ;;
3097             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3098             -fPIC)                echo -KPIC -xcode=pic32 ;;
3099             -W*,*)                echo $flag              ;;
3100             -f*-*|-W*|-mimpure-text)                      ;;
3101             -shared)              echo -G                 ;;
3102             *)                    echo $flag              ;;
3103         esac
3104     done
3105 }
3106
3107 tms470_flags(){
3108     for flag; do
3109         case $flag in
3110             -march=*|-mcpu=*)
3111                 case "${flag#*=}" in
3112                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3113                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3114                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3115                     armv6*|arm11*)          echo -mv=6   ;;
3116                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3117                                             echo -mv=5e  ;;
3118                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3119                 esac
3120                 ;;
3121             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3122             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3123             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3124             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3125             -msoft-float)   echo --float_support=vfplib       ;;
3126             -O[0-3]|-mf=*)  echo $flag                        ;;
3127             -g)             echo -g -mn                       ;;
3128             -pds=*)         echo $flag                        ;;
3129             -D*|-I*)        echo $flag                        ;;
3130             --gcc|--abi=*)  echo $flag                        ;;
3131             -me)            echo $flag                        ;;
3132         esac
3133     done
3134 }
3135
3136 probe_cc(){
3137     pfx=$1
3138     _cc=$2
3139
3140     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3141     unset _ld_o _ldflags _ld_lib _ld_path
3142     unset _depflags _DEPCMD _DEPFLAGS
3143     _flags_filter=echo
3144
3145     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3146         _type=llvm_gcc
3147         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3148         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3149         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3150         _cflags_speed='-O3'
3151         _cflags_size='-Os'
3152     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3153         _type=gcc
3154         gcc_version=$($_cc --version | head -n1)
3155         gcc_basever=$($_cc -dumpversion)
3156         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3157         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3158         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3159         if ! $_cc -dumpversion | grep -q '^2\.'; then
3160             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3161         fi
3162         _cflags_speed='-O3'
3163         _cflags_size='-Os'
3164     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3165         _type=icc
3166         _ident=$($_cc --version | head -n1)
3167         _depflags='-MMD'
3168         _cflags_speed='-O3'
3169         _cflags_size='-Os'
3170         _cflags_noopt='-O1'
3171     elif $_cc -v 2>&1 | grep -q xlc; then
3172         _type=xlc
3173         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3174         _cflags_speed='-O5'
3175         _cflags_size='-O5 -qcompact'
3176     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3177         _type=ccc
3178         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3179         _DEPFLAGS='-M'
3180         _cflags_speed='-fast'
3181         _cflags_size='-O1'
3182         _flags_filter=ccc_flags
3183     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3184         test -d "$sysroot" || die "No valid sysroot specified."
3185         _type=armcc
3186         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3187         armcc_conf="$PWD/armcc.conf"
3188         $_cc --arm_linux_configure                 \
3189              --arm_linux_config_file="$armcc_conf" \
3190              --configure_sysroot="$sysroot"        \
3191              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3192              die "Error creating armcc configuration file."
3193         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3194         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3195         as_default="${cross_prefix}gcc"
3196         _depflags='-MMD'
3197         _cflags_speed='-O3'
3198         _cflags_size='-Os'
3199     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3200         _type=tms470
3201         _ident=$($_cc -version | head -n1 | tr -s ' ')
3202         _flags='--gcc --abi=eabi -me'
3203         _cc_e='-ppl -fe=$@'
3204         _cc_o='-fe=$@'
3205         _depflags='-ppa -ppd=$(@:.o=.d)'
3206         _cflags_speed='-O3 -mf=5'
3207         _cflags_size='-O3 -mf=2'
3208         _flags_filter=tms470_flags
3209     elif $_cc -v 2>&1 | grep -q clang; then
3210         _type=clang
3211         _ident=$($_cc --version 2>/dev/null | head -n1)
3212         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3213         _cflags_speed='-O3'
3214         _cflags_size='-Os'
3215     elif $_cc -V 2>&1 | grep -q Sun; then
3216         _type=suncc
3217         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3218         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3219         _DEPFLAGS='-xM1 -xc99'
3220         _ldflags='-std=c99'
3221         _cflags_speed='-O5'
3222         _cflags_size='-O5 -xspace'
3223         _flags_filter=suncc_flags
3224     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3225         _type=pathscale
3226         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3227         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3228         _cflags_speed='-O2'
3229         _cflags_size='-Os'
3230         _flags_filter='filter_out -Wdisabled-optimization'
3231     elif $_cc -v 2>&1 | grep -q Open64; then
3232         _type=open64
3233         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3234         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3235         _cflags_speed='-O2'
3236         _cflags_size='-Os'
3237         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3238     elif $_cc -V 2>&1 | grep -q Portland; then
3239         _type=pgi
3240         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3241         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3242         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3243         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3244         _cflags_noopt="-O1"
3245         _flags_filter=pgi_flags
3246     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3247         _type=armasm
3248         _ident=$($_cc | head -n1)
3249         # 4509: "This form of conditional instruction is deprecated"
3250         _flags="-nologo -ignore 4509"
3251         _flags_filter=armasm_flags
3252     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3253         _type=msvc
3254         _ident=$($_cc 2>&1 | head -n1)
3255         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3256         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3257         _cflags_speed="-O2"
3258         _cflags_size="-O1"
3259         if $_cc -nologo- 2>&1 | grep -q Linker; then
3260             _ld_o='-out:$@'
3261         else
3262             _ld_o='-Fe$@'
3263         fi
3264         _cc_o='-Fo$@'
3265         _cc_e='-P -Fi$@'
3266         _flags_filter=msvc_flags
3267         _ld_lib='lib%.a'
3268         _ld_path='-libpath:'
3269         _flags='-nologo'
3270     elif $_cc 2>&1 | grep -q Intel; then
3271         _type=icl
3272         _ident=$($_cc 2>&1 | head -n1)
3273         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3274         # Not only is O3 broken on 13.x+ but it is slower on all previous
3275         # versions (tested) as well.
3276         _cflags_speed="-O2"
3277         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3278         if $_cc 2>&1 | grep -q Linker; then
3279             _ld_o='-out:$@'
3280         else
3281             _ld_o='-Fe$@'
3282         fi
3283         _cc_o='-Fo$@'
3284         _cc_e='-P'
3285         _flags_filter=icl_flags
3286         _ld_lib='lib%.a'
3287         _ld_path='-libpath:'
3288         # -Qdiag-error to make icl error when seeing certain unknown arguments
3289         _flags='-nologo -Qdiag-error:4044,10157'
3290         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3291         # with MSVC which enables it by default.
3292         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3293     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3294         # lld can emulate multiple different linkers; in ms link.exe mode,
3295         # the -? parameter gives the help output which contains an identifyable
3296         # string, while it gives an error in other modes.
3297         _type=lld-link
3298         # The link.exe mode doesn't have a switch for getting the version,
3299         # but we can force it back to gnu mode and get the version from there.
3300         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3301         _ld_o='-out:$@'
3302         _flags_filter=msvc_flags
3303         _ld_lib='lib%.a'
3304         _ld_path='-libpath:'
3305     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3306         _type=cparser
3307         _ident=$($_cc --version | head -n1)
3308         _depflags='-MMD'
3309         _cflags_speed='-O4'
3310         _cflags_size='-O2'
3311         _flags_filter=cparser_flags
3312     fi
3313
3314     eval ${pfx}_type=\$_type
3315     eval ${pfx}_ident=\$_ident
3316 }
3317
3318 set_ccvars(){
3319     eval ${1}_C=\${_cc_c-\${${1}_C}}
3320     eval ${1}_E=\${_cc_e-\${${1}_E}}
3321     eval ${1}_O=\${_cc_o-\${${1}_O}}
3322
3323     if [ -n "$_depflags" ]; then
3324         eval ${1}_DEPFLAGS=\$_depflags
3325     else
3326         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3327         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3328         eval DEP${1}FLAGS=\$_flags
3329     fi
3330 }
3331
3332 probe_cc cc "$cc"
3333 cflags_filter=$_flags_filter
3334 cflags_speed=$_cflags_speed
3335 cflags_size=$_cflags_size
3336 cflags_noopt=$_cflags_noopt
3337 add_cflags $_flags $_cflags
3338 cc_ldflags=$_ldflags
3339 set_ccvars CC
3340
3341 probe_cc hostcc "$host_cc"
3342 host_cflags_filter=$_flags_filter
3343 add_host_cflags  $_flags $_cflags
3344 set_ccvars HOSTCC
3345
3346 test -n "$cc_type" && enable $cc_type ||
3347     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3348
3349 : ${as_default:=$cc}
3350 : ${objcc_default:=$cc}
3351 : ${dep_cc_default:=$cc}
3352 : ${ld_default:=$cc}
3353 : ${host_ld_default:=$host_cc}
3354 set_default ar as objcc dep_cc ld host_ld
3355
3356 probe_cc as "$as"
3357 asflags_filter=$_flags_filter
3358 add_asflags $_flags $_cflags
3359 set_ccvars AS
3360
3361 probe_cc objcc "$objcc"
3362 objcflags_filter=$_flags_filter
3363 add_objcflags $_flags $_cflags
3364 set_ccvars OBJC
3365
3366 probe_cc ld "$ld"
3367 ldflags_filter=$_flags_filter
3368 add_ldflags $_flags $_ldflags
3369 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3370 LD_O=${_ld_o-$LD_O}
3371 LD_LIB=${_ld_lib-$LD_LIB}
3372 LD_PATH=${_ld_path-$LD_PATH}
3373
3374 probe_cc hostld "$host_ld"
3375 host_ldflags_filter=$_flags_filter
3376 add_host_ldflags $_flags $_ldflags
3377 HOSTLD_O=${_ld_o-$HOSTLD_O}
3378
3379 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3380     probe_cc depcc "$dep_cc"
3381     CCDEP=${_DEPCMD:-$DEPCMD}
3382     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3383     DEPCCFLAGS=$_flags
3384 fi
3385
3386 if $ar 2>&1 | grep -q Microsoft; then
3387     arflags="-nologo"
3388     ar_o='-out:$@'
3389 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3390     arflags="rq"
3391     ar_o='$@'
3392 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3393     arflags='-Xany -r -c'
3394     ar_o='$@'
3395 else
3396     arflags="rc"
3397     ar_o='$@'
3398 fi
3399
3400 add_cflags $extra_cflags
3401 add_objcflags $extra_objcflags
3402 add_asflags $extra_cflags
3403
3404 if test -n "$sysroot"; then
3405     case "$cc_type" in
3406         gcc|llvm_gcc|clang)
3407             add_cppflags --sysroot="$sysroot"
3408             add_ldflags --sysroot="$sysroot"
3409         ;;
3410         tms470)
3411             add_cppflags -I"$sysinclude"
3412             add_ldflags  --sysroot="$sysroot"
3413         ;;
3414     esac
3415 fi
3416
3417 if test "$cpu" = host; then
3418     enabled cross_compile &&
3419         die "--cpu=host makes no sense when cross-compiling."
3420
3421     case "$cc_type" in
3422         gcc|llvm_gcc)
3423             check_native(){
3424                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3425                 sed -n "/cc1.*$1=/{
3426                             s/.*$1=\\([^ ]*\\).*/\\1/
3427                             p
3428                             q
3429                         }" $TMPE
3430             }
3431             cpu=$(check_native -march || check_native -mcpu)
3432         ;;
3433     esac
3434
3435     test "${cpu:-host}" = host &&
3436         die "--cpu=host not supported with compiler $cc"
3437 fi
3438
3439 # Deal with common $arch aliases
3440 case "$arch" in
3441     aarch64|arm64)
3442         arch="aarch64"
3443     ;;
3444     arm*)
3445         arch="arm"
3446     ;;
3447     mips*|IP*)
3448         case "$arch" in
3449         *el)
3450             add_cppflags -EL
3451             add_ldflags -EL
3452         ;;
3453         *eb)
3454             add_cppflags -EB
3455             add_ldflags -EB
3456         ;;
3457         esac
3458         arch="mips"
3459     ;;
3460     parisc*|hppa*)
3461         arch="parisc"
3462     ;;
3463     "Power Macintosh"|ppc*|powerpc*)
3464         arch="ppc"
3465     ;;
3466     s390|s390x)
3467         arch="s390"
3468     ;;
3469     sh4|sh)
3470         arch="sh4"
3471     ;;
3472     sun4u|sparc*)
3473         arch="sparc"
3474     ;;
3475     tilegx|tile-gx)
3476         arch="tilegx"
3477     ;;
3478     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3479         arch="x86"
3480     ;;
3481 esac
3482
3483 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3484 enable $arch
3485
3486 # Add processor-specific flags
3487 if enabled aarch64; then
3488
3489     case $cpu in
3490         armv*)
3491             cpuflags="-march=$cpu"
3492         ;;
3493         *)
3494             cpuflags="-mcpu=$cpu"
3495         ;;
3496     esac
3497
3498 elif enabled alpha; then
3499
3500     cpuflags="-mcpu=$cpu"
3501
3502 elif enabled arm; then
3503
3504     check_arm_arch() {
3505         check_cpp_condition stddef.h \
3506             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3507             $cpuflags
3508     }
3509
3510     probe_arm_arch() {
3511         if   check_arm_arch 4;        then echo armv4
3512         elif check_arm_arch 4T;       then echo armv4t
3513         elif check_arm_arch 5;        then echo armv5
3514         elif check_arm_arch 5E;       then echo armv5e
3515         elif check_arm_arch 5T;       then echo armv5t
3516         elif check_arm_arch 5TE;      then echo armv5te
3517         elif check_arm_arch 5TEJ;     then echo armv5te
3518         elif check_arm_arch 6;        then echo armv6
3519         elif check_arm_arch 6J;       then echo armv6j
3520         elif check_arm_arch 6K;       then echo armv6k
3521         elif check_arm_arch 6Z;       then echo armv6z
3522         elif check_arm_arch 6ZK;      then echo armv6zk
3523         elif check_arm_arch 6T2;      then echo armv6t2
3524         elif check_arm_arch 7;        then echo armv7
3525         elif check_arm_arch 7A  7_A;  then echo armv7-a
3526         elif check_arm_arch 7S;       then echo armv7-a
3527         elif check_arm_arch 7R  7_R;  then echo armv7-r
3528         elif check_arm_arch 7M  7_M;  then echo armv7-m
3529         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3530         elif check_arm_arch 8A  8_A;  then echo armv8-a
3531         fi
3532     }
3533
3534     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3535
3536     case $cpu in
3537         armv*)
3538             cpuflags="-march=$cpu"
3539             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3540         ;;
3541         *)
3542             cpuflags="-mcpu=$cpu"
3543             case $cpu in
3544                 cortex-a*)                               subarch=armv7a  ;;
3545                 cortex-r*)                               subarch=armv7r  ;;
3546                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3547                 arm11*)                                  subarch=armv6   ;;
3548                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3549                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3550                 *)                             subarch=$(probe_arm_arch) ;;
3551             esac
3552         ;;
3553     esac
3554
3555     case "$subarch" in
3556         armv5t*)    enable fast_clz                ;;
3557         armv[6-8]*) enable fast_clz fast_unaligned ;;
3558     esac
3559
3560 elif enabled avr32; then
3561
3562     case $cpu in
3563         ap7[02]0[0-2])
3564             subarch="avr32_ap"
3565             cpuflags="-mpart=$cpu"
3566         ;;
3567         ap)
3568             subarch="avr32_ap"
3569             cpuflags="-march=$cpu"
3570         ;;
3571         uc3[ab]*)
3572             subarch="avr32_uc"
3573             cpuflags="-mcpu=$cpu"
3574         ;;
3575         uc)
3576             subarch="avr32_uc"
3577             cpuflags="-march=$cpu"
3578         ;;
3579     esac
3580
3581 elif enabled bfin; then
3582
3583     cpuflags="-mcpu=$cpu"
3584
3585 elif enabled mips; then
3586
3587     cpuflags="-march=$cpu"
3588
3589 elif enabled ppc; then
3590
3591     disable ldbrx
3592
3593     case $(tolower $cpu) in
3594         601|ppc601|powerpc601)
3595             cpuflags="-mcpu=601"
3596             disable altivec
3597         ;;
3598         603*|ppc603*|powerpc603*)
3599             cpuflags="-mcpu=603"
3600             disable altivec
3601         ;;
3602         604*|ppc604*|powerpc604*)
3603             cpuflags="-mcpu=604"
3604             disable altivec
3605         ;;
3606         g3|75*|ppc75*|powerpc75*)
3607             cpuflags="-mcpu=750"
3608             disable altivec
3609         ;;
3610         g4|745*|ppc745*|powerpc745*)
3611             cpuflags="-mcpu=7450"
3612             disable vsx
3613         ;;
3614         74*|ppc74*|powerpc74*)
3615             cpuflags="-mcpu=7400"
3616             disable vsx
3617         ;;
3618         g5|970|ppc970|powerpc970)
3619             cpuflags="-mcpu=970"
3620             disable vsx
3621         ;;
3622         power[3-6]*)
3623             cpuflags="-mcpu=$cpu"
3624             disable vsx
3625         ;;
3626         power[7-8]*)
3627             cpuflags="-mcpu=$cpu"
3628             enable ldbrx
3629         ;;
3630         cell)
3631             cpuflags="-mcpu=cell"
3632             enable ldbrx
3633             disable vsx
3634         ;;
3635         e500mc)
3636             cpuflags="-mcpu=e500mc"
3637             disable altivec
3638         ;;
3639         e500v2)
3640             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3641             disable altivec
3642             disable dcbzl
3643         ;;
3644         e500)
3645             cpuflags="-mcpu=8540 -mhard-float"
3646             disable altivec
3647             disable dcbzl
3648         ;;
3649     esac
3650
3651 elif enabled sparc; then
3652
3653     case $cpu in
3654         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3655             cpuflags="-mcpu=$cpu"
3656         ;;
3657         ultrasparc*|niagara[234])
3658             cpuflags="-mcpu=$cpu"
3659         ;;
3660     esac
3661
3662 elif enabled x86; then
3663
3664     case $cpu in
3665         i[345]86|pentium)
3666             cpuflags="-march=$cpu"
3667             disable i686
3668             disable mmx
3669         ;;
3670         # targets that do NOT support nopl and conditional mov (cmov)
3671         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3672             cpuflags="-march=$cpu"
3673             disable i686
3674         ;;
3675         # targets that do support nopl and conditional mov (cmov)
3676         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3677             cpuflags="-march=$cpu"
3678             enable i686
3679             enable fast_cmov
3680         ;;
3681         # targets that do support conditional mov but on which it's slow
3682         pentium4|pentium4m|prescott|nocona)
3683             cpuflags="-march=$cpu"
3684             enable i686
3685             disable fast_cmov
3686         ;;
3687     esac
3688
3689 fi
3690
3691 if [ "$cpu" != generic ]; then
3692     add_cflags  $cpuflags
3693     add_asflags $cpuflags
3694     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3695 fi
3696
3697 # compiler sanity check
3698 check_exec <<EOF
3699 int main(void){ return 0; }
3700 EOF
3701 if test "$?" != 0; then
3702     echo "$cc is unable to create an executable file."
3703     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3704         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3705         echo "Only do this if you know what cross compiling means."
3706     fi
3707     die "C compiler test failed."
3708 fi
3709
3710 add_cppflags -D_ISOC99_SOURCE
3711
3712 # some compilers silently accept -std=c11, so we also need to check that the
3713 # version macro is defined properly
3714 if test_cflags_cpp -std=c11 "__STDC_VERSION__ >= 201112L"; then
3715     add_cflags -std=c11
3716 else
3717     check_cflags -std=c99
3718 fi
3719
3720 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3721 #include <stdlib.h>
3722 EOF
3723 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3724 #include <stdlib.h>
3725 EOF
3726
3727 add_host_cppflags -D_ISOC99_SOURCE
3728 check_host_cflags -std=c99
3729 check_host_cflags -Wall
3730 check_host_cflags -O3
3731
3732 check_64bit(){
3733     arch32=$1
3734     arch64=$2
3735     expr=$3
3736     check_code cc "" "int test[2*($expr) - 1]" &&
3737         subarch=$arch64 || subarch=$arch32
3738 }
3739
3740 case "$arch" in
3741     aarch64|alpha|ia64)
3742         spic=$shared
3743     ;;
3744     mips)
3745         check_64bit mips mips64 '_MIPS_SIM > 1'
3746         spic=$shared
3747     ;;
3748     parisc)
3749         check_64bit parisc parisc64 'sizeof(void *) > 4'
3750         spic=$shared
3751     ;;
3752     ppc)
3753         check_64bit ppc ppc64 'sizeof(void *) > 4'
3754         spic=$shared
3755     ;;
3756     s390)
3757         check_64bit s390 s390x 'sizeof(void *) > 4'
3758         spic=$shared
3759     ;;
3760     sparc)
3761         check_64bit sparc sparc64 'sizeof(void *) > 4'
3762         spic=$shared
3763     ;;
3764     x86)
3765         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3766         if test "$subarch" = "x86_64"; then
3767             spic=$shared
3768         fi
3769     ;;
3770 esac
3771
3772 enable $subarch
3773 enabled spic && enable_weak pic
3774
3775 # OS specific
3776 case $target_os in
3777     aix)
3778         SHFLAGS=-shared
3779         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3780         enabled shared && add_ldflags -Wl,-brtl
3781         ;;
3782     android)
3783         disable symver
3784         enable section_data_rel_ro
3785         SLIB_INSTALL_NAME='$(SLIBNAME)'
3786         SLIB_INSTALL_LINKS=
3787         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3788         ;;
3789     haiku)
3790         prefix_default="/boot/common"
3791         network_extralibs="-lnetwork"
3792         host_libs=
3793         ;;
3794     sunos)
3795         SHFLAGS='-shared -Wl,-h,$$(@F)'
3796         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3797         network_extralibs="-lsocket -lnsl"
3798         # When using suncc to build, the Solaris linker will mark
3799         # an executable with each instruction set encountered by
3800         # the Solaris assembler.  As our libraries contain their own
3801         # guards for processor-specific code, instead suppress
3802         # generation of the HWCAPS ELF section on Solaris x86 only.
3803         enabled_all suncc x86 &&
3804             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3805             add_ldflags -Wl,-M,mapfile
3806         nm_default='nm -P -g'
3807         version_script='-M'
3808         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3809         ;;
3810     netbsd)
3811         disable symver
3812         oss_indev_extralibs="-lossaudio"
3813         oss_outdev_extralibs="-lossaudio"
3814         ;;
3815     openbsd|bitrig)
3816         disable symver
3817         SHFLAGS='-shared'
3818         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3819         SLIB_INSTALL_LINKS=
3820         oss_indev_extralibs="-lossaudio"
3821         oss_outdev_extralibs="-lossaudio"
3822         ;;
3823     dragonfly)
3824         disable symver
3825         ;;
3826     freebsd)
3827         ;;
3828     bsd/os)
3829         add_extralibs -lpoll -lgnugetopt
3830         ;;
3831     darwin)
3832         enabled ppc && add_asflags -force_cpusubtype_ALL
3833         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3834         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3835         add_ldflags -Wl,-dynamic,-search_paths_first
3836         SLIBSUF=".dylib"
3837         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3838         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3839         objformat="macho"
3840         enabled x86_64 && objformat="macho64"
3841         enabled_any pic shared ||
3842             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3843         check_header dispatch/dispatch.h &&
3844             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3845         ;;
3846     msys*)
3847         die "Native MSYS builds are discouraged, please use the MINGW environment."
3848         ;;
3849     mingw32*|mingw64*)
3850         if test $target_os = "mingw32ce"; then
3851             disable network
3852         else
3853             target_os=mingw32
3854         fi
3855         LIBTARGET=i386
3856         if enabled x86_64; then
3857             LIBTARGET="i386:x86-64"
3858         elif enabled arm; then
3859             LIBTARGET=arm-wince
3860         fi
3861         check_ldflags -Wl,--nxcompat
3862         check_ldflags -Wl,--dynamicbase
3863         shlibdir_default="$bindir_default"
3864         SLIBPREF=""
3865         SLIBSUF=".dll"
3866         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3867         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3868         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3869         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3870         SLIB_INSTALL_LINKS=
3871         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3872         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3873         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3874         objformat="win32"
3875         dlltool="${cross_prefix}dlltool"
3876         ranlib=:
3877         enable dos_paths
3878         ;;
3879     win32|win64)
3880         disable symver
3881         if enabled shared; then
3882             # Link to the import library instead of the normal static library
3883             # for shared libs.
3884             LD_LIB='%.lib'
3885             # Cannot build both shared and static libs with MSVC or icl.
3886             disable static
3887         fi
3888         shlibdir_default="$bindir_default"
3889         SLIBPREF=""
3890         SLIBSUF=".dll"
3891         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3892         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3893         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3894         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3895         SLIB_INSTALL_LINKS=
3896         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3897         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3898         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3899         objformat="win32"
3900         ranlib=:
3901         enable dos_paths
3902         ;;
3903     cygwin*)
3904         target_os=cygwin
3905         shlibdir_default="$bindir_default"
3906         SLIBPREF="cyg"
3907         SLIBSUF=".dll"
3908         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3909         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3910         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3911         SLIB_INSTALL_LINKS=
3912         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3913         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3914         objformat="win32"
3915         enable dos_paths
3916         ;;
3917     *-dos|freedos|opendos)
3918         network_extralibs="-lsocket"
3919         objformat="coff"
3920         enable dos_paths
3921         add_cppflags -U__STRICT_ANSI__
3922         ;;
3923     linux)
3924         enable dv1394
3925         enable section_data_rel_ro
3926         ;;
3927     irix*)
3928         target_os=irix
3929         ranlib="echo ignoring ranlib"
3930         ;;
3931     os/2*)
3932         ln_s="cp -f"
3933         objformat="aout"
3934         add_cppflags -D_GNU_SOURCE
3935         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3936         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3937         LIBSUF="_s.a"
3938         SLIBPREF=""
3939         SLIBSUF=".dll"
3940         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3941         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3942         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3943             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3944             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3945             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3946             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3947         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3948             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3949         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3950         enable dos_paths
3951         ;;
3952     gnu/kfreebsd)
3953         add_cppflags -D_BSD_SOURCE
3954         ;;
3955     gnu)
3956         ;;
3957     qnx)
3958         add_cppflags -D_QNX_SOURCE
3959         network_extralibs="-lsocket"
3960         ;;
3961     symbian)
3962         SLIBSUF=".dll"
3963         enable dos_paths
3964         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3965         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3966         add_ldflags -Wl,--target1-abs,--no-undefined \
3967                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3968                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3969         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3970                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3971                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3972         ;;
3973     osf1)
3974         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3975         ;;
3976     minix)
3977         ;;
3978     plan9)
3979         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3980                      -D_REENTRANT_SOURCE        \
3981                      -D_RESEARCH_SOURCE         \
3982                      -DFD_SETSIZE=96            \
3983                      -DHAVE_SOCK_OPTS
3984         add_compat strtod.o strtod=avpriv_strtod
3985         network_extralibs='-lbsd'
3986         exeobjs=compat/plan9/main.o
3987         cp_f='cp'
3988         ;;
3989     none)
3990         ;;
3991     *)
3992         die "Unknown OS '$target_os'."
3993         ;;
3994 esac
3995
3996 # determine libc flavour
3997
3998 probe_libc(){
3999     pfx=$1
4000     pfx_no_=${pfx%_}
4001     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4002     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4003         eval ${pfx}libc_type=uclibc
4004         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4005     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4006         eval ${pfx}libc_type=glibc
4007         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4008     # MinGW headers can be installed on Cygwin, so check for newlib first.
4009     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4010         eval ${pfx}libc_type=newlib
4011         add_${pfx}cppflags -U__STRICT_ANSI__
4012     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4013     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4014         eval ${pfx}libc_type=mingw64
4015         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4016         eval test \$${pfx_no_}cc_type = "gcc" &&
4017             add_${pfx}cppflags -D__printf__=__gnu_printf__
4018     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4019          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4020         eval ${pfx}libc_type=mingw32
4021         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4022             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4023             die "ERROR: MinGW32 runtime version must be >= 3.15."
4024         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4025         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
4026             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4027         eval test \$${pfx_no_}cc_type = "gcc" &&
4028             add_${pfx}cppflags -D__printf__=__gnu_printf__
4029     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4030         eval ${pfx}libc_type=msvcrt
4031         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4032             if [ "$pfx" = host_ ]; then
4033                 add_host_cppflags -Dsnprintf=_snprintf
4034             else
4035                 add_compat strtod.o strtod=avpriv_strtod
4036                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4037                                              _snprintf=avpriv_snprintf  \
4038                                              vsnprintf=avpriv_vsnprintf
4039             fi
4040         fi
4041         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4042         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4043         # 0x601 by default unless something else is set by the user.
4044         # This can easily lead to us detecting functions only present
4045         # in such new versions and producing binaries requiring windows 7.0.
4046         # Therefore explicitly set the default to XP unless the user has
4047         # set something else on the command line.
4048         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4049         # family. For these cases, configure is free to use any functions
4050         # found in the SDK headers by default. (Alternatively, we could force
4051         # _WIN32_WINNT to 0x0602 in that case.)
4052         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4053             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4054 #ifdef WINAPI_FAMILY
4055 #include <winapifamily.h>
4056 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4057 #error not desktop
4058 #endif
4059 #endif
4060 EOF
4061         if [ "$pfx" = "" ]; then
4062             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4063         fi
4064     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4065         eval ${pfx}libc_type=klibc
4066     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4067         eval ${pfx}libc_type=bionic
4068     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4069         eval ${pfx}libc_type=solaris
4070         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4071     else
4072         eval ${pfx}libc_type=default
4073         add_${pfx}cppflags -D_DEFAULT_SOURCE
4074     fi
4075 }
4076
4077 probe_libc
4078 test -n "$libc_type" && enable libc_$libc_type
4079 probe_libc host_
4080 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4081
4082 case $libc_type in
4083     bionic)
4084         add_compat strtod.o strtod=avpriv_strtod
4085         ;;
4086 esac
4087
4088 # hacks for compiler/libc/os combinations
4089
4090 if enabled_all tms470 libc_glibc; then
4091     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4092     add_cppflags -D__USER_LABEL_PREFIX__=
4093     add_cppflags -D__builtin_memset=memset
4094     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4095     add_cflags   -pds=48    # incompatible redefinition of macro
4096 fi
4097
4098 if enabled_all ccc libc_glibc; then
4099     add_ldflags -Wl,-z,now  # calls to libots crash without this
4100 fi
4101
4102 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4103     add_cppflags '-I\$(SRC_PATH)/compat/float'
4104
4105 esc(){
4106     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4107 }
4108
4109 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
4110
4111 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4112
4113 set_default $PATHS_LIST
4114 set_default nm
4115
4116 # we need to build at least one lib type
4117 if ! enabled_any static shared; then
4118     cat <<EOF
4119 At least one library type must be built.
4120 Specify --enable-static to build the static libraries or --enable-shared to
4121 build the shared libraries as well. To only build the shared libraries specify
4122 --disable-static in addition to --enable-shared.
4123 EOF
4124     exit 1
4125 fi
4126
4127 die_license_disabled() {
4128     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4129 }
4130
4131 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
4132 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
4133 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
4134
4135 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4136
4137 disabled optimizations || check_cflags -fomit-frame-pointer
4138
4139 enable_weak_pic() {
4140     disabled pic && return
4141     enable pic
4142     add_cppflags -DPIC
4143     case "$target_os" in
4144     mingw*|cygwin*)
4145         ;;
4146     *)
4147         add_cflags -fPIC
4148         ;;
4149     esac
4150     add_asflags  -fPIC
4151 }
4152
4153 enabled pic && enable_weak_pic
4154
4155 check_cc <<EOF || die "Symbol mangling check failed."
4156 int ff_extern;
4157 EOF
4158 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4159 extern_prefix=${sym%%ff_extern*}
4160
4161 check_cc <<EOF && enable_weak inline_asm
4162 void foo(void) { __asm__ volatile ("" ::); }
4163 EOF
4164
4165 _restrict=
4166 for restrict_keyword in restrict __restrict__ __restrict; do
4167     check_cc <<EOF && _restrict=$restrict_keyword && break
4168 void foo(char * $restrict_keyword p);
4169 EOF
4170 done
4171
4172 check_cc <<EOF && enable pragma_deprecated
4173 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4174 EOF
4175
4176 check_cc <<EOF && enable attribute_packed
4177 struct { int x; } __attribute__((packed)) x;
4178 EOF
4179
4180 check_cc <<EOF && enable attribute_may_alias
4181 union { int x; } __attribute__((may_alias)) x;
4182 EOF
4183
4184 check_cc <<EOF || die "endian test failed"
4185 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4186 EOF
4187 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4188
4189 check_gas() {
4190     log "check_gas using '$as' as AS"
4191     # :vararg is used on aarch64, arm and ppc altivec
4192     check_as <<EOF || return 1
4193 .macro m n, y:vararg=0
4194 \n: .int \y
4195 .endm
4196 m x
4197 EOF
4198     # .altmacro is only used in arm asm
4199     ! enabled arm || check_as <<EOF || return 1
4200 .altmacro
4201 EOF
4202     enable gnu_as
4203     return 0
4204 }
4205
4206 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4207     nogas=:
4208     enabled_any arm aarch64 && nogas=die
4209     enabled_all ppc altivec && nogas=warn
4210     as_noop=-v
4211
4212     case $as_type in
4213         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4214         gcc)  gaspp_as_type=gas ;;
4215         *)    gaspp_as_type=$as_type ;;
4216     esac
4217
4218     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4219
4220     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4221         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4222
4223     if ! check_gas ; then
4224         as=${gas:=$as}
4225         check_gas || \
4226             $nogas "GNU assembler not found, install/update gas-preprocessor"
4227     fi
4228
4229     check_as <<EOF && enable as_func
4230 .func test
4231 .endfunc
4232 EOF
4233 fi
4234
4235 check_inline_asm inline_asm_labels '"1:\n"'
4236
4237 if enabled aarch64; then
4238     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4239     # internal assembler in clang 3.3 does not support this instruction
4240     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4241     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4242
4243     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4244
4245 elif enabled alpha; then
4246
4247     check_cflags -mieee
4248
4249 elif enabled arm; then
4250
4251     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4252     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4253     enabled thumb && check_cflags -mthumb || check_cflags -marm
4254
4255     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4256         enable vfp_args
4257     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4258         enable vfp_args
4259     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4260         case "${cross_prefix:-$cc}" in
4261             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4262             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4263 __asm__ (".eabi_attribute 28, 1");
4264 int main(void) { return 0; }
4265 EOF
4266         esac
4267         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4268     fi
4269
4270     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4271     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4272     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4273     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4274     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4275     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4276
4277     [ $target_os = linux ] || [ $target_os = android ] ||
4278         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4279             $ARCH_EXT_LIST_ARM
4280
4281     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4282
4283     check_as <<EOF && enable as_dn_directive
4284 ra .dn d0.i16
4285 .unreq ra
4286 EOF
4287     check_as <<EOF && enable as_fpu_directive
4288 .fpu neon
4289 EOF
4290
4291     # llvm's integrated assembler supports .object_arch from llvm 3.5
4292     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4293 .object_arch armv4
4294 EOF
4295
4296     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4297
4298 elif enabled mips; then
4299
4300     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4301
4302     # make sure that only an instruction set is enabled
4303     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4304
4305     if enabled mips64; then
4306         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4307             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4308                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4309     else
4310         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4311             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4312                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4313     fi
4314
4315 elif enabled parisc; then
4316
4317     if enabled gcc; then
4318         case $($cc -dumpversion) in
4319             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4320         esac
4321     fi
4322
4323 elif enabled ppc; then
4324
4325     enable local_aligned_8 local_aligned_16 local_aligned_32
4326
4327     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4328     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4329     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4330     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4331
4332     # AltiVec flags: The FSF version of GCC differs from the Apple version
4333     if enabled altivec; then
4334         check_cflags -maltivec -mabi=altivec &&
4335         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4336         check_cflags -faltivec
4337
4338         # check if our compiler supports Motorola AltiVec C API
4339         check_cc <<EOF || disable altivec
4340 $inc_altivec_h
4341 int main(void) {
4342     vector signed int v1 = (vector signed int) { 0 };
4343     vector signed int v2 = (vector signed int) { 1 };
4344     v1 = vec_add(v1, v2);
4345     return 0;
4346 }
4347 EOF
4348
4349         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4350     fi
4351
4352     if enabled vsx; then
4353         check_cflags -mvsx &&
4354         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4355     fi
4356
4357     if enabled power8; then
4358         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4359     fi
4360
4361 elif enabled x86; then
4362
4363     check_builtin rdtsc    intrin.h   "__rdtsc()"
4364     check_builtin mm_empty mmintrin.h "_mm_empty()"
4365
4366     enable local_aligned_8 local_aligned_16 local_aligned_32
4367
4368     # check whether EBP is available on x86
4369     # As 'i' is stored on the stack, this program will crash
4370     # if the base pointer is used to access it because the
4371     # base pointer is cleared in the inline assembly code.
4372     check_exec_crash <<EOF && enable ebp_available
4373 volatile int i=0;
4374 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4375 return i;
4376 EOF
4377
4378     # check whether EBX is available on x86
4379     check_inline_asm ebx_available '""::"b"(0)' &&
4380         check_inline_asm ebx_available '"":::"%ebx"'
4381
4382     # check whether xmm clobbers are supported
4383     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4384
4385     # check whether binutils is new enough to compile SSSE3/MMXEXT
4386     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4387     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4388
4389     if ! disabled_any asm mmx yasm; then
4390         if check_cmd $yasmexe --version; then
4391             enabled x86_64 && yasm_extra="-m amd64"
4392             yasm_debug="-g dwarf2"
4393         elif check_cmd nasm -v; then
4394             yasmexe=nasm
4395             yasm_debug="-g -F dwarf"
4396             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4397         fi
4398
4399         YASMFLAGS="-f $objformat $yasm_extra"
4400         enabled pic               && append YASMFLAGS "-DPIC"
4401         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4402         case "$objformat" in
4403             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4404         esac
4405
4406         check_yasm "movbe ecx, [5]" && enable yasm ||
4407             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4408         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4409         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4410         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4411         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4412         check_yasm "CPU amdnop" || disable cpunop
4413     fi
4414
4415     case "$cpu" in
4416         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4417             disable fast_clz
4418         ;;
4419     esac
4420
4421 fi
4422
4423 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4424
4425 check_ldflags -Wl,--as-needed
4426
4427 if check_func dlopen; then
4428     ldl=
4429 elif check_func dlopen -ldl; then
4430     ldl=-ldl
4431 fi
4432
4433 if ! disabled network; then
4434     check_func getaddrinfo $network_extralibs
4435     check_func inet_aton $network_extralibs
4436
4437     check_type netdb.h "struct addrinfo"
4438     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4439     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4440     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4441     check_type poll.h "struct pollfd"
4442     check_type netinet/sctp.h "struct sctp_event_subscribe"
4443     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4444     check_type netinet/in.h "struct sockaddr_in6"
4445     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4446     check_type "sys/types.h sys/socket.h" socklen_t
4447
4448     # Prefer arpa/inet.h over winsock2
4449     if check_header arpa/inet.h ; then
4450         check_func closesocket
4451     elif check_header winsock2.h ; then
4452         check_func_headers winsock2.h closesocket -lws2 &&
4453             network_extralibs="-lws2" ||
4454         { check_func_headers winsock2.h closesocket -lws2_32 &&
4455             network_extralibs="-lws2_32"; } || disable winsock2_h network
4456         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4457
4458         check_type ws2tcpip.h socklen_t
4459         check_type ws2tcpip.h "struct addrinfo"
4460         check_type ws2tcpip.h "struct group_source_req"
4461         check_type ws2tcpip.h "struct ip_mreq_source"
4462         check_type ws2tcpip.h "struct ipv6_mreq"
4463         check_type winsock2.h "struct pollfd"
4464         check_struct winsock2.h "struct sockaddr" sa_len
4465         check_type ws2tcpip.h "struct sockaddr_in6"
4466         check_type ws2tcpip.h "struct sockaddr_storage"
4467     else
4468         disable network
4469     fi
4470 fi
4471
4472 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4473 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4474 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4475 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4476
4477 case "$custom_allocator" in
4478     jemalloc)
4479         # jemalloc by default does not use a prefix
4480         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4481     ;;
4482     tcmalloc)
4483         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
4484         malloc_prefix=tc_
4485     ;;
4486 esac
4487
4488 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4489 check_func  ${malloc_prefix}memalign            && enable memalign
4490 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4491
4492 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4493     check_func_headers time.h clock_gettime ||
4494         { check_lib time.h clock_gettime -lrt && LIBRT="-lrt"; }
4495
4496 check_func  fcntl
4497 check_func  fork
4498 check_func  gethrtime
4499 check_func  getopt
4500 check_func  getrusage
4501 check_func  gettimeofday
4502 check_func  gmtime_r
4503 check_func  isatty
4504 check_func  localtime_r
4505 check_func  mach_absolute_time
4506 check_func  mkstemp
4507 check_func  mmap
4508 check_func  mprotect
4509 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4510 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4511 check_func  sched_getaffinity
4512 check_func  setrlimit
4513 check_func  strerror_r
4514 check_func  sysconf
4515 check_func  sysctl
4516 check_func  usleep
4517
4518 check_func_headers io.h setmode
4519 check_func_headers stdlib.h getenv
4520
4521 check_func_headers windows.h CoTaskMemFree -lole32
4522 check_func_headers windows.h GetProcessAffinityMask
4523 check_func_headers windows.h GetProcessTimes
4524 check_func_headers windows.h GetSystemTimeAsFileTime
4525 check_func_headers windows.h LoadLibrary
4526 check_func_headers windows.h MapViewOfFile
4527 check_func_headers windows.h SetConsoleTextAttribute
4528 check_func_headers windows.h Sleep
4529 check_func_headers windows.h VirtualAlloc
4530 check_struct windows.h "CONDITION_VARIABLE" Ptr
4531
4532 check_header direct.h
4533 check_header dlfcn.h
4534 check_header d3d11.h
4535 check_header dxva.h
4536 check_header dxva2api.h
4537 check_header io.h
4538 check_header mach/mach_time.h
4539 check_header malloc.h
4540 check_header poll.h
4541 check_header sys/mman.h
4542 check_header sys/param.h
4543 check_header sys/resource.h
4544 check_header sys/select.h
4545 check_header sys/time.h
4546 check_header sys/un.h
4547 check_header unistd.h
4548 check_header valgrind/valgrind.h
4549 check_header vdpau/vdpau.h
4550 check_header vdpau/vdpau_x11.h
4551 check_header VideoDecodeAcceleration/VDADecoder.h
4552 check_header windows.h
4553 check_header X11/extensions/XvMClib.h
4554
4555 # it seems there are versions of clang in some distros that try to use the
4556 # gcc headers, which explodes for stdatomic
4557 # so we also check that atomics actually work here
4558 check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4559
4560 check_lib "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4561 check_lib "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4562 check_lib "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4563
4564 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4565
4566 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4567 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4568 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4569
4570 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4571 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4572 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4573 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4574 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4575
4576 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4577
4578 if ! disabled w32threads && ! enabled pthreads; then
4579     check_func_headers "windows.h process.h" _beginthreadex &&
4580         enable w32threads || disable w32threads
4581 fi
4582
4583 # check for some common methods of building with pthread support
4584 # do this before the optional library checks as some of them require pthreads
4585 if ! disabled pthreads && ! enabled w32threads; then
4586     enable pthreads
4587     if check_func pthread_join -pthread; then
4588         add_cflags -pthread
4589         add_extralibs -pthread
4590     elif check_func pthread_join -pthreads; then
4591         add_cflags -pthreads
4592         add_extralibs -pthreads
4593     elif check_func pthread_join -lpthreadGC2; then
4594         add_extralibs -lpthreadGC2
4595     elif check_lib pthread.h pthread_join -lpthread; then
4596         :
4597     elif ! check_func pthread_join; then
4598         disable pthreads
4599     fi
4600 fi
4601
4602 enabled pthreads &&
4603     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
4604
4605 disabled  zlib || check_lib  zlib.h      zlibVersion -lz   || disable  zlib
4606 disabled bzlib || check_lib bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4607
4608 check_lib math.h sin -lm && LIBM="-lm"
4609
4610 atan2f_args=2
4611 ldexpf_args=2
4612 powf_args=2
4613
4614 for func in $MATH_FUNCS; do
4615     eval check_mathfunc $func \${${func}_args:-1}
4616 done
4617
4618 # these are off by default, so fail if requested and not available
4619 enabled avisynth          && { check_lib "avisynth/avisynth_c.h windows.h" LoadLibrary ||
4620                                check_lib "avxsynth/avxsynth_c.h dlfcn.h" dlopen -ldl   ||
4621                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4622 enabled cuda              && check_lib cuda.h cuInit -lcuda
4623 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4624 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4625 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4626 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4627 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4628 enabled libfdk_aac        && require_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4629 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4630 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4631 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4632                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4633                                done || die "ERROR: libgsm not found"; }
4634 enabled libhdcd           && require_pkg_config libhdcd "hdcd/hdcd_simple.h" hdcd_new
4635 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4636 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4637 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
4638 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4639 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4640 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4641 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4642 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4643 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
4644 enabled libopenjpeg       && { check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4645                                require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4646 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4647 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4648 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4649 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4650 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
4651 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4652 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4653 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4654 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4655 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4656 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4657 enabled libvpx            && require_pkg_config "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version && {
4658     enabled libvpx_vp8_decoder && {
4659         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
4660             disable libvpx_vp8_decoder;
4661     }
4662     enabled libvpx_vp8_encoder && {
4663         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
4664             disable libvpx_vp8_encoder;
4665     }
4666     enabled libvpx_vp9_decoder && {
4667         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
4668             disable libvpx_vp9_decoder;
4669     }
4670     enabled libvpx_vp9_encoder && {
4671         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
4672             disable libvpx_vp9_encoder;
4673     }
4674     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
4675         die "libvpx enabled but no supported decoders found"
4676     fi
4677 }
4678 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4679 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4680 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4681                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4682                                die "ERROR: libx264 version must be >= 0.118."; } &&
4683                              { check_cpp_condition x264.h "X264_MPEG2" &&
4684                                enable libx262; }
4685 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
4686                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
4687                                die "ERROR: libx265 version must be >= 57."; }
4688 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4689 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4690 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4691                                 { ! enabled cross_compile && {
4692                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
4693                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
4694                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
4695                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
4696                                die "ERROR: mmal not found"; }
4697 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
4698 enabled omx_rpi && enable omx
4699 enabled omx               && { check_header OMX_Core.h ||
4700                                 { ! enabled cross_compile && enabled omx_rpi && {
4701                                     add_cflags -isystem/opt/vc/include/IL ; }
4702                                 check_header OMX_Core.h ; } ||
4703                                die "ERROR: OpenMAX IL headers not found"; }
4704 enabled openssl           && { { check_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
4705                                  check_pkg_config openssl openssl/ssl.h SSL_library_init; } && {
4706                                add_cflags $openssl_cflags && add_extralibs $openssl_libs; }||
4707                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4708                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4709                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4710                                die "ERROR: openssl not found"; }
4711
4712 if enabled gnutls; then
4713     { check_lib gmp.h mpz_export -lgmp && enable gmp; } ||
4714     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4715 fi
4716
4717 # libdc1394 check
4718 if enabled libdc1394; then
4719     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
4720         enable libdc1394_2; } ||
4721     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4722         enable libdc1394_1; } ||
4723     die "ERROR: No version of libdc1394 found "
4724 fi
4725
4726 if enabled nvenc; then
4727     check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."
4728     check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6" ||
4729         die "ERROR: NVENC API version 5 or older is not supported"
4730 fi
4731
4732 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4733     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4734     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4735     enable sdl
4736 fi
4737
4738 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man
4739 ! disabled texi2html && check_cmd texi2html -version && enable texi2html || disable texi2html
4740
4741 check_header linux/fb.h
4742 check_header linux/videodev2.h
4743 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4744
4745 check_header AVFoundation/AVFoundation.h &&
4746     check_objcflags -fobjc-arc &&
4747     add_extralibs -framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia ||
4748     disable AVFoundation_AVFoundation_h
4749
4750 check_header sys/videoio.h
4751
4752 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4753 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4754 # w32api 3.12 had it defined wrong
4755 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4756
4757 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4758 { check_header dev/bktr/ioctl_meteor.h &&
4759   check_header dev/bktr/ioctl_bt848.h; } ||
4760 { check_header machine/ioctl_meteor.h &&
4761   check_header machine/ioctl_bt848.h; } ||
4762 { check_header dev/video/meteor/ioctl_meteor.h &&
4763   check_header dev/video/bktr/ioctl_bt848.h; } ||
4764 check_header dev/ic/bt8xx.h
4765
4766 check_header sndio.h
4767 check_header sys/soundcard.h
4768 check_header soundcard.h
4769
4770 enabled_any alsa_indev alsa_outdev &&
4771     check_lib alsa/asoundlib.h snd_pcm_htimestamp -lasound
4772
4773 enabled jack_indev && check_lib jack/jack.h jack_client_open -ljack &&
4774     check_func jack_port_get_latency_range -ljack
4775
4776 enabled_any sndio_indev sndio_outdev && check_lib sndio.h sio_open -lsndio
4777
4778 if enabled libcdio; then
4779     check_lib "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4780     check_lib "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4781     die "ERROR: No usable libcdio/cdparanoia found"
4782 fi
4783
4784 if enabled libxcb; then
4785     check_pkg_config xcb-shape xcb/shape.h xcb_shape_rectangles || {
4786         enabled libxcb && die "ERROR: libxcb not found";
4787     } && enable libxcb
4788
4789     disabled libxcb_shm ||
4790         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
4791             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
4792         } && check_header sys/shm.h && enable libxcb_shm
4793
4794     disabled libxcb_xfixes ||
4795         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
4796             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
4797         } && enable libxcb_xfixes
4798
4799     add_cflags "$xcb_shape_cflags $xcb_event_cflags $xcb_shm_cflags $xcb_xfixes_cflags"
4800     add_extralibs "$xcb_shape_libs $xcb_event_libs $xcb_shm_libs $xcb_xfixes_libs"
4801 fi
4802
4803 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4804
4805 enabled vaapi &&
4806     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
4807     disable vaapi
4808
4809 enabled vaapi &&
4810     check_lib "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
4811     enable vaapi_drm
4812
4813 enabled vdpau &&
4814     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4815     disable vdpau
4816
4817 enabled_any vaapi vdpau && check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4818
4819 enabled vaapi && enabled xlib &&
4820     check_lib "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
4821     enable vaapi_x11
4822
4823 enabled vdpau && enabled xlib &&
4824     check_lib "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4825     enable vdpau_x11
4826
4827 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4828
4829 # add some useful compiler flags if supported
4830 check_cflags -Wdeclaration-after-statement
4831 check_cflags -Wall
4832 check_cflags -Wdisabled-optimization
4833 check_cflags -Wpointer-arith
4834 check_cflags -Wredundant-decls
4835 check_cflags -Wwrite-strings
4836 check_cflags -Wtype-limits
4837 check_cflags -Wundef
4838 check_cflags -Wmissing-prototypes
4839 check_cflags -Wstrict-prototypes
4840 enabled extra_warnings && check_cflags -Winline