build: Store library version numbers in .version files
[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:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [avbuild/config.log]
81   --disable-logging        do not log configure debug information
82   --prefix=PREFIX          install in PREFIX [$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-avxsynth          Linux version of AviSynth
192   --enable-bzlib             bzip2 compression [autodetect]
193   --enable-frei0r            video filtering plugins
194   --enable-gnutls            crypto
195   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
196   --enable-libcdio           audio CD input
197   --enable-libdc1394         IEEE 1394/Firewire camera input
198   --enable-libdcadec         DCA audio decoding
199   --enable-libfaac           AAC audio encoding
200   --enable-libfdk-aac        AAC audio encoding/decoding
201   --enable-libfontconfig     font configuration and management
202   --enable-libfreetype       font rendering
203   --enable-libgsm            GSM audio encoding/decoding
204   --enable-libhdcd           HDCD decoding filter
205   --enable-libilbc           ILBC audio encoding/decoding
206   --enable-libkvazaar        HEVC video encoding
207   --enable-libmp3lame        MP3 audio encoding
208   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
209   --enable-libopencore-amrwb AMR-WB audio decoding
210   --enable-libopencv         computer vision
211   --enable-libopenh264       H.264 video encoding/decoding
212   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
213   --enable-libopus           Opus audio encoding/decoding
214   --enable-libpulse          Pulseaudio sound server
215   --enable-librtmp           RTMP streaming
216   --enable-libschroedinger   Dirac video encoding/decoding
217   --enable-libsnappy         snappy compression
218   --enable-libspeex          Speex audio encoding/decoding
219   --enable-libtheora         Theora video encoding/decoding
220   --enable-libtwolame        MP2 audio encoding
221   --enable-libvo-aacenc      AAC audio encoding
222   --enable-libvo-amrwbenc    AMR-WB audio encoding
223   --enable-libvorbis         Vorbis audio encoding/decoding
224   --enable-libvpx            VP* video encoding/decoding
225   --enable-libwavpack        Wavpack audio encoding/decoding
226   --enable-libwebp           WebP image encoding/decoding
227   --enable-libx264           H.264 video encoding
228   --enable-libx265           HEVC video encoding
229   --enable-libxavs           Chinese AVS video encoding
230   --enable-libxcb            X window system protocol communication
231   --enable-libxcb-shm        X11 shm communication [auto]
232   --enable-libxcb-xfixes     X11 mouse rendering [auto]
233   --enable-libxvid           MPEG-4 ASP video encoding
234   --enable-openssl           crypto
235   --enable-zlib              compression [autodetect]
236
237   The following libraries provide various hardware acceleration features:
238   --enable-cuda    Nvidia CUDA (dynamically linked)
239   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
240   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
241   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
242   --enable-libnpp  Nvidia CUDA processing
243   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
244   --enable-nvenc   Nvidia video encoding
245   --enable-omx     OpenMAX IL
246   --enable-omx-rpi OpenMAX IL for Raspberry Pi
247   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
248   --enable-vda     Apple Video Decode Acceleration [auto]
249   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
250
251 Toolchain options:
252   --arch=ARCH              select architecture [$arch]
253   --cpu=CPU                select the minimum required CPU (affects
254                            instruction selection, may crash on older CPUs)
255   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
256   --enable-cross-compile   assume a cross-compiler is used
257   --sysroot=PATH           root of cross-build tree
258   --sysinclude=PATH        location of cross-build system headers
259   --target-os=OS           compiler targets OS [$target_os]
260   --target-exec=CMD        command to run executables on target
261   --target-path=DIR        path to view of build directory on target
262   --target-samples=DIR     path to samples directory on target
263   --toolchain=NAME         set tool defaults according to NAME
264   --nm=NM                  use nm tool
265   --ar=AR                  use archive tool AR [$ar_default]
266   --as=AS                  use assembler AS [$as_default]
267   --cc=CC                  use C compiler CC [$cc_default]
268   --objcc=OCC              use ObjC compiler OCC [$cc_default]
269   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
270   --ld=LD                  use linker LD
271   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
272   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
273   --host-cc=HOSTCC         use host C compiler HOSTCC
274   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
275   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
276   --host-ld=HOSTLD         use host linker HOSTLD
277   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
278   --host-libs=HLIBS        use libs HLIBS when linking for host
279   --host-os=OS             compiler host OS [$target_os]
280   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
281   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
282   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
283   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
284   --extra-libs=ELIBS       add ELIBS [$ELIBS]
285   --extra-version=STRING   version string suffix []
286   --optflags=OPTFLAGS      override optimization-related compiler flags
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) printf '%s ' $v ;; esac"
433     done
434 }
435
436 filter_out(){
437     pat=$1
438     shift
439     for v; do
440         eval "case $v in $pat) ;; *) printf '%s ' $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_cflags_headers(){
720     append CFLAGS_HEADERS $($cflags_filter "$@")
721 }
722
723 add_asflags(){
724     append ASFLAGS $($asflags_filter "$@")
725 }
726
727 add_objcflags(){
728     append OBJCFLAGS $($objcflags_filter "$@")
729 }
730
731 add_ldflags(){
732     append LDFLAGS $($ldflags_filter "$@")
733 }
734
735 add_ldexeflags(){
736     append LDEXEFLAGS $($ldflags_filter "$@")
737 }
738
739 add_stripflags(){
740     append STRIPFLAGS "$@"
741 }
742
743 add_extralibs(){
744     prepend extralibs $($ldflags_filter "$@")
745 }
746
747 add_host_cppflags(){
748     append host_cppflags "$@"
749 }
750
751 add_host_cflags(){
752     append host_cflags $($host_cflags_filter "$@")
753 }
754
755 add_host_ldflags(){
756     append host_ldflags $($host_ldflags_filter "$@")
757 }
758
759 add_compat(){
760     append compat_objs $1
761     shift
762     map 'add_cppflags -D$v' "$@"
763 }
764
765 check_cmd(){
766     log "$@"
767     "$@" >> $logfile 2>&1
768 }
769
770 cc_o(){
771     eval printf '%s\\n' $CC_O
772 }
773
774 cc_e(){
775     eval printf '%s\\n' $CC_E
776 }
777
778 check_cc(){
779     log check_cc "$@"
780     cat > $TMPC
781     log_file $TMPC
782     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
783 }
784
785 check_objcc(){
786     log check_objcc "$@"
787     cat > $TMPC
788     log_file $TMPC
789     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
790 }
791
792 check_cpp(){
793     log check_cpp "$@"
794     cat > $TMPC
795     log_file $TMPC
796     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
797 }
798
799 as_o(){
800     eval printf '%s\\n' $AS_O
801 }
802
803 check_as(){
804     log check_as "$@"
805     cat > $TMPS
806     log_file $TMPS
807     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
808 }
809
810 check_inline_asm(){
811     log check_inline_asm "$@"
812     name="$1"
813     code="$2"
814     shift 2
815     disable $name
816     check_cc "$@" <<EOF && enable $name
817 void foo(void){ __asm__ volatile($code); }
818 EOF
819 }
820
821 check_insn(){
822     log check_insn "$@"
823     check_inline_asm ${1}_inline "\"$2\""
824     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
825 }
826
827 check_yasm(){
828     log check_yasm "$@"
829     echo "$1" > $TMPS
830     log_file $TMPS
831     shift 1
832     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
833 }
834
835 ld_o(){
836     eval printf '%s\\n' $LD_O
837 }
838
839 check_ld(){
840     log check_ld "$@"
841     flags=$(filter_out '-l*' "$@")
842     libs=$(filter '-l*' "$@")
843     check_cc $($cflags_filter $flags) || return
844     flags=$($ldflags_filter $flags)
845     libs=$($ldflags_filter $libs)
846     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
847 }
848
849 print_include(){
850     hdr=$1
851     test "${hdr%.h}" = "${hdr}" &&
852         echo "#include $hdr"    ||
853         echo "#include <$hdr>"
854 }
855
856 check_code(){
857     log check_code "$@"
858     check=$1
859     headers=$2
860     code=$3
861     shift 3
862     {
863         for hdr in $headers; do
864             print_include $hdr
865         done
866         echo "int main(void) { $code; return 0; }"
867     } | check_$check "$@"
868 }
869
870 check_cppflags(){
871     log check_cppflags "$@"
872     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
873 int x;
874 EOF
875 }
876
877 test_cflags(){
878     log test_cflags "$@"
879     set -- $($cflags_filter "$@")
880     check_cc "$@" <<EOF
881 int x;
882 EOF
883 }
884
885 check_cflags(){
886     log check_cflags "$@"
887     test_cflags "$@" && add_cflags "$@"
888 }
889
890 test_objcflags(){
891     log test_objcflags "$@"
892     set -- $($objcflags_filter "$@")
893     check_objcc "$@" <<EOF
894 int x;
895 EOF
896 }
897
898 check_objcflags(){
899     log check_objcflags "$@"
900     test_objcflags "$@" && add_objcflags "$@"
901 }
902
903 test_ldflags(){
904     log test_ldflags "$@"
905     check_ld "$@" <<EOF
906 int main(void){ return 0; }
907 EOF
908 }
909
910 check_ldflags(){
911     log check_ldflags "$@"
912     test_ldflags "$@" && add_ldflags "$@"
913 }
914
915 test_stripflags(){
916     log test_stripflags "$@"
917     # call check_cc to get a fresh TMPO
918     check_cc <<EOF
919 int main(void) { return 0; }
920 EOF
921     check_cmd $strip $STRIPFLAGS "$@" $TMPO
922 }
923
924 check_stripflags(){
925     log check_stripflags "$@"
926     test_stripflags "$@" && add_stripflags "$@"
927 }
928
929 check_header(){
930     log check_header "$@"
931     header=$1
932     shift
933     disable_safe $header
934     check_cpp "$@" <<EOF && enable_safe $header
935 #include <$header>
936 int x;
937 EOF
938 }
939
940 check_func(){
941     log check_func "$@"
942     func=$1
943     shift
944     disable $func
945     check_ld "$@" <<EOF && enable $func
946 extern int $func();
947 int main(void){ $func(); }
948 EOF
949 }
950
951 check_mathfunc(){
952     log check_mathfunc "$@"
953     func=$1
954     narg=$2
955     shift 2
956     test $narg = 2 && args="f, g" || args="f"
957     disable $func
958     check_ld "$@" <<EOF && enable $func
959 #include <math.h>
960 float foo(float f, float g) { return $func($args); }
961 int main(void){ return 0; }
962 EOF
963 }
964
965 check_func_headers(){
966     log check_func_headers "$@"
967     headers=$1
968     funcs=$2
969     shift 2
970     {
971         for hdr in $headers; do
972             print_include $hdr
973         done
974         for func in $funcs; do
975             echo "long check_$func(void) { return (long) $func; }"
976         done
977         echo "int main(void) { return 0; }"
978     } | check_ld "$@" && enable $funcs && enable_safe $headers
979 }
980
981 check_cpp_condition(){
982     log check_cpp_condition "$@"
983     header=$1
984     condition=$2
985     shift 2
986     check_cpp "$@" <<EOF
987 #include <$header>
988 #if !($condition)
989 #error "unsatisfied condition: $condition"
990 #endif
991 EOF
992 }
993
994 test_cflags_cpp(){
995     log test_cflags_cpp "$@"
996     flags=$1
997     condition=$2
998     shift 2
999     set -- $($cflags_filter "$flags")
1000     check_cpp "$@" <<EOF
1001 #if !($condition)
1002 #error "unsatisfied condition: $condition"
1003 #endif
1004 EOF
1005 }
1006
1007 check_lib(){
1008     log check_lib "$@"
1009     name="$1"
1010     headers="$2"
1011     funcs="$3"
1012     shift 3
1013     disable $name
1014     check_func_headers "$headers" "$funcs" "$@" &&
1015         enable $name && add_extralibs "$@"
1016 }
1017
1018 check_pkg_config(){
1019     log check_pkg_config "$@"
1020     pkg_version="$1"
1021     pkg="${1%% *}"
1022     headers="$2"
1023     funcs="$3"
1024     shift 3
1025     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1026     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1027     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1028     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1029         set_safe "${pkg}_cflags"    $pkg_cflags &&
1030         set_safe "${pkg}_extralibs" $pkg_libs
1031 }
1032
1033 check_exec(){
1034     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1035 }
1036
1037 check_exec_crash(){
1038     log check_exec_crash "$@"
1039     code=$(cat)
1040
1041     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1042     # are safe but may not be available everywhere.  Thus we use
1043     # raise(SIGTERM) instead.  The check is run in a subshell so we
1044     # can redirect the "Terminated" message from the shell.  SIGBUS
1045     # is not defined by standard C so it is used conditionally.
1046
1047     (check_exec "$@") >> $logfile 2>&1 <<EOF
1048 #include <signal.h>
1049 static void sighandler(int sig){
1050     raise(SIGTERM);
1051 }
1052 int foo(void){
1053     $code
1054 }
1055 int (*func_ptr)(void) = foo;
1056 int main(void){
1057     signal(SIGILL, sighandler);
1058     signal(SIGFPE, sighandler);
1059     signal(SIGSEGV, sighandler);
1060 #ifdef SIGBUS
1061     signal(SIGBUS, sighandler);
1062 #endif
1063     return func_ptr();
1064 }
1065 EOF
1066 }
1067
1068 check_type(){
1069     log check_type "$@"
1070     headers=$1
1071     type=$2
1072     shift 2
1073     disable_safe "$type"
1074     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1075 }
1076
1077 check_struct(){
1078     log check_struct "$@"
1079     headers=$1
1080     struct=$2
1081     member=$3
1082     shift 3
1083     disable_safe "${struct}_${member}"
1084     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1085         enable_safe "${struct}_${member}"
1086 }
1087
1088 check_builtin(){
1089     log check_builtin "$@"
1090     name=$1
1091     headers=$2
1092     builtin=$3
1093     shift 3
1094     disable "$name"
1095     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1096 }
1097
1098 check_compile_assert(){
1099     log check_compile_assert "$@"
1100     name=$1
1101     headers=$2
1102     condition=$3
1103     shift 3
1104     disable "$name"
1105     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1106 }
1107
1108 require(){
1109     log require "$@"
1110     name_version="$1"
1111     name="${1%% *}"
1112     headers="$2"
1113     func="$3"
1114     shift 3
1115     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1116 }
1117
1118 require_pkg_config(){
1119     log require_pkg_config "$@"
1120     pkg_version="$1"
1121     pkg="${1%% *}"
1122     check_pkg_config "$@" || die "ERROR: $pkg_version not found"
1123     add_cflags    $(get_safe "${pkg}_cflags")
1124     add_extralibs $(get_safe "${pkg}_extralibs")
1125 }
1126
1127 hostcc_e(){
1128     eval printf '%s\\n' $HOSTCC_E
1129 }
1130
1131 hostcc_o(){
1132     eval printf '%s\\n' $HOSTCC_O
1133 }
1134
1135 check_host_cc(){
1136     log check_host_cc "$@"
1137     cat > $TMPC
1138     log_file $TMPC
1139     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1140 }
1141
1142 check_host_cpp(){
1143     log check_host_cpp "$@"
1144     cat > $TMPC
1145     log_file $TMPC
1146     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1147 }
1148
1149 check_host_cppflags(){
1150     log check_host_cppflags "$@"
1151     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1152 int x;
1153 EOF
1154 }
1155
1156 check_host_cflags(){
1157     log check_host_cflags "$@"
1158     set -- $($host_cflags_filter "$@")
1159     check_host_cc "$@" <<EOF && append host_cflags "$@"
1160 int x;
1161 EOF
1162 }
1163
1164 check_host_cpp_condition(){
1165     log check_host_cpp_condition "$@"
1166     header=$1
1167     condition=$2
1168     shift 2
1169     check_host_cpp "$@" <<EOF
1170 #include <$header>
1171 #if !($condition)
1172 #error "unsatisfied condition: $condition"
1173 #endif
1174 EOF
1175 }
1176
1177 apply(){
1178     file=$1
1179     shift
1180     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1181 }
1182
1183 cp_if_changed(){
1184     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1185     mkdir -p "$(dirname $2)"
1186     cp -f "$1" "$2"
1187 }
1188
1189 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1190 # system-dependent things.
1191
1192 AVCODEC_COMPONENTS="
1193     bsfs
1194     decoders
1195     encoders
1196     hwaccels
1197     parsers
1198 "
1199
1200 AVDEVICE_COMPONENTS="
1201     indevs
1202     outdevs
1203 "
1204 AVFILTER_COMPONENTS="
1205     filters
1206 "
1207 AVFORMAT_COMPONENTS="
1208     demuxers
1209     muxers
1210     protocols
1211 "
1212
1213 AVRESAMPLE_COMPONENTS=""
1214 AVUTIL_COMPONENTS=""
1215
1216 COMPONENT_LIST="
1217     $AVCODEC_COMPONENTS
1218     $AVDEVICE_COMPONENTS
1219     $AVFILTER_COMPONENTS
1220     $AVFORMAT_COMPONENTS
1221     $AVRESAMPLE_COMPONENTS
1222     $AVUTIL_COMPONENTS
1223 "
1224
1225 EXAMPLE_LIST="
1226     decode_audio_example
1227     decode_video_example
1228     encode_audio_example
1229     encode_video_example
1230     filter_audio_example
1231     metadata_example
1232     output_example
1233     qsvdec_example
1234     transcode_aac_example
1235 "
1236
1237 HWACCEL_LIBRARY_NONFREE_LIST="
1238     cuda
1239     libnpp
1240 "
1241 HWACCEL_LIBRARY_LIST="
1242     $HWACCEL_LIBRARY_NONFREE_LIST
1243     d3d11va
1244     dxva2
1245     libmfx
1246     mmal
1247     nvenc
1248     omx
1249     vaapi
1250     vda
1251     vdpau
1252 "
1253
1254 EXTERNAL_LIBRARY_GPL_LIST="
1255     libcdio
1256     libx264
1257     libx265
1258     libxavs
1259     libxvid
1260 "
1261
1262 EXTERNAL_LIBRARY_NONFREE_LIST="
1263     libfaac
1264     libfdk_aac
1265     openssl
1266 "
1267
1268 EXTERNAL_LIBRARY_VERSION3_LIST="
1269     libopencore_amrnb
1270     libopencore_amrwb
1271     libvo_aacenc
1272     libvo_amrwbenc
1273 "
1274
1275 EXTERNAL_LIBRARY_LIST="
1276     $EXTERNAL_LIBRARY_GPL_LIST
1277     $EXTERNAL_LIBRARY_NONFREE_LIST
1278     $EXTERNAL_LIBRARY_VERSION3_LIST
1279     avisynth
1280     avxsynth
1281     bzlib
1282     frei0r
1283     gnutls
1284     libbs2b
1285     libdc1394
1286     libdcadec
1287     libfontconfig
1288     libfreetype
1289     libgsm
1290     libhdcd
1291     libilbc
1292     libkvazaar
1293     libmp3lame
1294     libopencv
1295     libopenh264
1296     libopenjpeg
1297     libopus
1298     libpulse
1299     librtmp
1300     libschroedinger
1301     libsnappy
1302     libspeex
1303     libtheora
1304     libtwolame
1305     libvorbis
1306     libvpx
1307     libwavpack
1308     libwebp
1309     libxcb
1310     libxcb_shm
1311     libxcb_xfixes
1312     zlib
1313 "
1314
1315 FEATURE_LIST="
1316     gray
1317     hardcoded_tables
1318     omx_rpi
1319     runtime_cpudetect
1320     safe_bitstream_reader
1321     shared
1322     small
1323     sram
1324     static
1325     swscale_alpha
1326 "
1327
1328 LIBRARY_LIST="
1329     avcodec
1330     avdevice
1331     avfilter
1332     avformat
1333     avresample
1334     avutil
1335     swscale
1336 "
1337
1338 LICENSE_LIST="
1339     gpl
1340     nonfree
1341     version3
1342 "
1343
1344 PROGRAM_LIST="
1345     avconv
1346     avplay
1347     avprobe
1348 "
1349
1350 SUBSYSTEM_LIST="
1351     dct
1352     doc
1353     error_resilience
1354     faan
1355     fft
1356     lsp
1357     lzo
1358     mdct
1359     network
1360     rdft
1361 "
1362
1363 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1364 CONFIG_LIST="
1365     $EXAMPLE_LIST
1366     $EXTERNAL_LIBRARY_LIST
1367     $HWACCEL_LIBRARY_LIST
1368     $FEATURE_LIST
1369     $LICENSE_LIST
1370     $LIBRARY_LIST
1371     $PROGRAM_LIST
1372     $SUBSYSTEM_LIST
1373     neon_clobber_test
1374     pic
1375     pod2man
1376     texi2html
1377     thumb
1378     valgrind_backtrace
1379     xmm_clobber_test
1380     $COMPONENT_LIST
1381 "
1382
1383 THREADS_LIST="
1384     pthreads
1385     w32threads
1386 "
1387
1388 ATOMICS_LIST="
1389     atomics_gcc
1390     atomics_suncc
1391     atomics_win32
1392 "
1393
1394 ARCH_LIST="
1395     aarch64
1396     alpha
1397     arm
1398     avr32
1399     avr32_ap
1400     avr32_uc
1401     bfin
1402     ia64
1403     m68k
1404     mips
1405     mips64
1406     parisc
1407     ppc
1408     ppc64
1409     s390
1410     sh4
1411     sparc
1412     sparc64
1413     tilegx
1414     tilepro
1415     tomi
1416     x86
1417     x86_32
1418     x86_64
1419 "
1420
1421 ARCH_EXT_LIST_ARM="
1422     armv5te
1423     armv6
1424     armv6t2
1425     armv8
1426     neon
1427     vfp
1428     vfpv3
1429 "
1430
1431 ARCH_EXT_LIST_X86_SIMD="
1432     amd3dnow
1433     amd3dnowext
1434     avx
1435     avx2
1436     fma3
1437     fma4
1438     mmx
1439     mmxext
1440     sse
1441     sse2
1442     sse3
1443     sse4
1444     sse42
1445     ssse3
1446     xop
1447 "
1448
1449 ARCH_EXT_LIST_PPC="
1450     altivec
1451     dcbzl
1452     ldbrx
1453     power8
1454     ppc4xx
1455     vsx
1456 "
1457
1458 ARCH_EXT_LIST_X86="
1459     $ARCH_EXT_LIST_X86_SIMD
1460     cpunop
1461     i686
1462 "
1463
1464 ARCH_EXT_LIST_MIPS="
1465     loongson
1466     mips32r1
1467     mips64r1
1468     mips32r2
1469     mips64r2
1470     mips32r6
1471     mips64r6
1472 "
1473
1474 ARCH_EXT_LIST="
1475     $ARCH_EXT_LIST_ARM
1476     $ARCH_EXT_LIST_MIPS
1477     $ARCH_EXT_LIST_PPC
1478     $ARCH_EXT_LIST_X86
1479     vis
1480 "
1481
1482 ARCH_FEATURES="
1483     aligned_stack
1484     fast_64bit
1485     fast_clz
1486     fast_cmov
1487     local_aligned_8
1488     local_aligned_16
1489     local_aligned_32
1490     simd_align_16
1491     simd_align_32
1492 "
1493
1494 BUILTIN_LIST="
1495     atomic_cas_ptr
1496     machine_rw_barrier
1497     MemoryBarrier
1498     mm_empty
1499     rdtsc
1500     sem_timedwait
1501     sync_val_compare_and_swap
1502 "
1503 HAVE_LIST_CMDLINE="
1504     inline_asm
1505     symver
1506     yasm
1507 "
1508
1509 HAVE_LIST_PUB="
1510     bigendian
1511     fast_unaligned
1512 "
1513
1514 HEADERS_LIST="
1515     AVFoundation_AVFoundation_h
1516     alsa_asoundlib_h
1517     altivec_h
1518     arpa_inet_h
1519     cdio_paranoia_h
1520     cdio_paranoia_paranoia_h
1521     d3d11_h
1522     dispatch_dispatch_h
1523     dev_bktr_ioctl_bt848_h
1524     dev_bktr_ioctl_meteor_h
1525     dev_ic_bt8xx_h
1526     dev_video_bktr_ioctl_bt848_h
1527     dev_video_meteor_ioctl_meteor_h
1528     direct_h
1529     dlfcn_h
1530     dxva_h
1531     gsm_h
1532     io_h
1533     mach_mach_time_h
1534     machine_ioctl_bt848_h
1535     machine_ioctl_meteor_h
1536     malloc_h
1537     poll_h
1538     sndio_h
1539     soundcard_h
1540     stdatomic_h
1541     sys_mman_h
1542     sys_param_h
1543     sys_resource_h
1544     sys_select_h
1545     sys_soundcard_h
1546     sys_time_h
1547     sys_un_h
1548     sys_videoio_h
1549     unistd_h
1550     valgrind_valgrind_h
1551     windows_h
1552     winsock2_h
1553 "
1554
1555 INTRINSICS_LIST="
1556     intrinsics_neon
1557 "
1558
1559 MATH_FUNCS="
1560     atanf
1561     atan2f
1562     cbrtf
1563     cosf
1564     exp2
1565     exp2f
1566     expf
1567     isinf
1568     isnan
1569     ldexpf
1570     llrint
1571     llrintf
1572     log2
1573     log2f
1574     log10f
1575     lrint
1576     lrintf
1577     powf
1578     rint
1579     round
1580     roundf
1581     sinf
1582     trunc
1583     truncf
1584 "
1585
1586 SYSTEM_FUNCS="
1587     aligned_malloc
1588     clock_gettime
1589     closesocket
1590     CommandLineToArgvW
1591     CoTaskMemFree
1592     CryptGenRandom
1593     dlopen
1594     fcntl
1595     flt_lim
1596     fork
1597     getaddrinfo
1598     gethrtime
1599     getopt
1600     GetProcessAffinityMask
1601     GetProcessMemoryInfo
1602     GetProcessTimes
1603     getrusage
1604     GetSystemTimeAsFileTime
1605     gettimeofday
1606     gmtime_r
1607     inet_aton
1608     isatty
1609     jack_port_get_latency_range
1610     LoadLibrary
1611     localtime_r
1612     mach_absolute_time
1613     MapViewOfFile
1614     memalign
1615     mkstemp
1616     mmap
1617     mprotect
1618     nanosleep
1619     posix_memalign
1620     sched_getaffinity
1621     SetConsoleTextAttribute
1622     setmode
1623     setrlimit
1624     Sleep
1625     strerror_r
1626     sysconf
1627     sysctl
1628     usleep
1629     VirtualAlloc
1630 "
1631
1632 TOOLCHAIN_FEATURES="
1633     as_dn_directive
1634     as_fpu_directive
1635     as_func
1636     as_object_arch
1637     asm_mod_q
1638     attribute_may_alias
1639     attribute_packed
1640     ebp_available
1641     ebx_available
1642     gnu_as
1643     ibm_asm
1644     inline_asm_labels
1645     pragma_deprecated
1646     symver_asm_label
1647     symver_gnu_asm
1648     vfp_args
1649     xform_asm
1650     xmm_clobbers
1651 "
1652
1653 TYPES_LIST="
1654     CONDITION_VARIABLE_Ptr
1655     socklen_t
1656     struct_addrinfo
1657     struct_group_source_req
1658     struct_ip_mreq_source
1659     struct_ipv6_mreq
1660     struct_pollfd
1661     struct_rusage_ru_maxrss
1662     struct_sockaddr_in6
1663     struct_sockaddr_sa_len
1664     struct_sockaddr_storage
1665     struct_v4l2_frmivalenum_discrete
1666 "
1667
1668 HAVE_LIST="
1669     $ARCH_EXT_LIST
1670     $(add_suffix _external $ARCH_EXT_LIST)
1671     $(add_suffix _inline   $ARCH_EXT_LIST)
1672     $ARCH_FEATURES
1673     $BUILTIN_LIST
1674     $HAVE_LIST_CMDLINE
1675     $HAVE_LIST_PUB
1676     $HEADERS_LIST
1677     $INTRINSICS_LIST
1678     $MATH_FUNCS
1679     $SYSTEM_FUNCS
1680     $THREADS_LIST
1681     $TOOLCHAIN_FEATURES
1682     $TYPES_LIST
1683     dos_paths
1684     dxva2_lib
1685     libc_msvcrt
1686     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1687     sdl
1688     section_data_rel_ro
1689     threads
1690     vaapi_drm
1691     vaapi_x11
1692     vdpau_x11
1693 "
1694
1695 # options emitted with CONFIG_ prefix but not available on the command line
1696 CONFIG_EXTRA="
1697     aandcttables
1698     ac3dsp
1699     audio_frame_queue
1700     audiodsp
1701     blockdsp
1702     bswapdsp
1703     cabac
1704     dirac_parse
1705     dvprofile
1706     faandct
1707     faanidct
1708     fdctdsp
1709     flacdsp
1710     fmtconvert
1711     g722dsp
1712     gmp
1713     golomb
1714     gplv3
1715     h263dsp
1716     h264chroma
1717     h264dsp
1718     h264parse
1719     h264pred
1720     h264qpel
1721     hevc_ps
1722     hpeldsp
1723     huffman
1724     huffyuvdsp
1725     huffyuvencdsp
1726     idctdsp
1727     iirfilter
1728     imdct15
1729     intrax8
1730     iso_media
1731     ividsp
1732     jpegtables
1733     libx262
1734     lgplv3
1735     lpc
1736     lzf
1737     me_cmp
1738     mpeg_er
1739     mpegaudio
1740     mpegaudiodsp
1741     mpegaudioheader
1742     mpegvideo
1743     mpegvideoenc
1744     mss34dsp
1745     pixblockdsp
1746     qpeldsp
1747     qsv
1748     qsvdec
1749     qsvenc
1750     rangecoder
1751     riffdec
1752     riffenc
1753     rtpdec
1754     rtpenc_chain
1755     rv34dsp
1756     sinewin
1757     snappy
1758     srtp
1759     startcode
1760     texturedsp
1761     texturedspenc
1762     tpeldsp
1763     vaapi_encode
1764     vc1dsp
1765     videodsp
1766     vp3dsp
1767     vp56dsp
1768     vp8dsp
1769     wma_freqs
1770     wmv2dsp
1771 "
1772
1773 CMDLINE_SELECT="
1774     $ARCH_EXT_LIST
1775     $CONFIG_LIST
1776     $HAVE_LIST_CMDLINE
1777     $THREADS_LIST
1778     asm
1779     cross_compile
1780     debug
1781     extra_warnings
1782     logging
1783     lto
1784     optimizations
1785     rpath
1786 "
1787
1788 PATHS_LIST="
1789     bindir
1790     datadir
1791     docdir
1792     incdir
1793     libdir
1794     mandir
1795     prefix
1796     shlibdir
1797 "
1798
1799 CMDLINE_SET="
1800     $PATHS_LIST
1801     ar
1802     arch
1803     as
1804     cc
1805     objcc
1806     cpu
1807     cross_prefix
1808     custom_allocator
1809     dep_cc
1810     env
1811     extra_version
1812     host_cc
1813     host_cflags
1814     host_extralibs
1815     host_ld
1816     host_ldflags
1817     host_os
1818     ld
1819     logfile
1820     malloc_prefix
1821     nm
1822     optflags
1823     pkg_config
1824     pkg_config_flags
1825     random_seed
1826     samples
1827     sysinclude
1828     sysroot
1829     target_exec
1830     target_os
1831     target_path
1832     target_samples
1833     toolchain
1834 "
1835
1836 CMDLINE_APPEND="
1837     extra_cflags
1838     extra_objcflags
1839     host_cppflags
1840 "
1841
1842 # code dependency declarations
1843
1844 # architecture extensions
1845
1846 armv5te_deps="arm"
1847 armv6_deps="arm"
1848 armv6t2_deps="arm"
1849 armv8_deps="aarch64"
1850 neon_deps_any="aarch64 arm"
1851 intrinsics_neon_deps="neon"
1852 vfp_deps_any="aarch64 arm"
1853 vfpv3_deps="vfp"
1854
1855 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1856
1857 altivec_deps="ppc"
1858 ppc4xx_deps="ppc"
1859 vsx_deps="altivec"
1860 power8_deps="vsx"
1861
1862 cpunop_deps="i686"
1863 x86_64_select="i686"
1864 x86_64_suggest="fast_cmov"
1865
1866 amd3dnow_deps="mmx"
1867 amd3dnowext_deps="amd3dnow"
1868 i686_deps="x86"
1869 mmx_deps="x86"
1870 mmxext_deps="mmx"
1871 sse_deps="mmxext"
1872 sse2_deps="sse"
1873 sse3_deps="sse2"
1874 ssse3_deps="sse3"
1875 sse4_deps="ssse3"
1876 sse42_deps="sse4"
1877 avx_deps="sse42"
1878 xop_deps="avx"
1879 fma3_deps="avx"
1880 fma4_deps="avx"
1881 avx2_deps="avx"
1882
1883 mmx_external_deps="yasm"
1884 mmx_inline_deps="inline_asm"
1885 mmx_suggest="mmx_external mmx_inline"
1886
1887 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1888     eval dep=\$${ext}_deps
1889     eval ${ext}_external_deps='"${dep}_external"'
1890     eval ${ext}_inline_deps='"${dep}_inline"'
1891     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1892 done
1893
1894 aligned_stack_if_any="aarch64 ppc x86"
1895 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1896 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1897 fast_unaligned_if_any="aarch64 ppc x86"
1898 simd_align_16_if_any="altivec neon sse"
1899 simd_align_32_if_any="avx"
1900
1901 # system capabilities
1902 symver_if_any="symver_asm_label symver_gnu_asm"
1903 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1904
1905 # threading support
1906 atomics_gcc_if="sync_val_compare_and_swap"
1907 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1908 atomics_win32_if="MemoryBarrier"
1909 atomics_native_if_any="$ATOMICS_LIST"
1910 w32threads_deps="atomics_native"
1911 threads_if_any="$THREADS_LIST"
1912
1913 # subsystems
1914 dct_select="rdft"
1915 dirac_parse_select="golomb"
1916 error_resilience_select="me_cmp"
1917 faandct_deps="faan fdctdsp"
1918 faanidct_deps="faan idctdsp"
1919 h264dsp_select="startcode"
1920 hevc_ps_select="golomb"
1921 intrax8_select="blockdsp idctdsp"
1922 mdct_select="fft"
1923 rdft_select="fft"
1924 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1925 mpeg_er_select="error_resilience"
1926 mpegaudio_select="mpegaudiodsp mpegaudioheader"
1927 mpegaudiodsp_select="dct"
1928 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1929 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1930 vc1dsp_select="h264chroma qpeldsp startcode"
1931
1932 # decoders / encoders
1933 aac_decoder_select="imdct15 mdct sinewin"
1934 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1935 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1936 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1937 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1938 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1939 adpcm_g722_decoder_select="g722dsp"
1940 adpcm_g722_encoder_select="g722dsp"
1941 aic_decoder_select="golomb idctdsp"
1942 alac_encoder_select="lpc"
1943 als_decoder_select="bswapdsp"
1944 amrnb_decoder_select="lsp"
1945 amrwb_decoder_select="lsp"
1946 amv_decoder_select="sp5x_decoder"
1947 ape_decoder_select="bswapdsp"
1948 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1949 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1950 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1951 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1952 atrac1_decoder_select="mdct sinewin"
1953 atrac3_decoder_select="mdct"
1954 atrac3p_decoder_select="mdct sinewin"
1955 bink_decoder_select="blockdsp hpeldsp"
1956 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1957 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1958 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1959 cllc_decoder_select="bswapdsp"
1960 comfortnoise_encoder_select="lpc"
1961 cook_decoder_select="audiodsp mdct sinewin"
1962 cscd_decoder_select="lzo"
1963 cscd_decoder_suggest="zlib"
1964 dca_decoder_select="fmtconvert mdct"
1965 dds_decoder_select="texturedsp"
1966 dnxhd_decoder_select="blockdsp idctdsp"
1967 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1968 dvvideo_decoder_select="dvprofile idctdsp"
1969 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1970 dxa_decoder_deps="zlib"
1971 dxv_decoder_select="lzf texturedsp"
1972 eac3_decoder_select="ac3_decoder"
1973 eac3_encoder_select="ac3_encoder"
1974 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1975 eatgq_decoder_select="aandcttables idctdsp"
1976 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
1977 exr_decoder_deps="zlib"
1978 ffv1_decoder_select="rangecoder"
1979 ffv1_encoder_select="rangecoder"
1980 ffvhuff_decoder_select="huffyuv_decoder"
1981 ffvhuff_encoder_select="huffyuv_encoder"
1982 fic_decoder_select="golomb"
1983 flac_decoder_select="flacdsp"
1984 flac_encoder_select="bswapdsp flacdsp lpc"
1985 flashsv_decoder_deps="zlib"
1986 flashsv_encoder_deps="zlib"
1987 flashsv2_decoder_deps="zlib"
1988 flv_decoder_select="h263_decoder"
1989 flv_encoder_select="h263_encoder"
1990 fourxm_decoder_select="blockdsp bswapdsp"
1991 fraps_decoder_select="bswapdsp huffman"
1992 g2m_decoder_deps="zlib"
1993 g2m_decoder_select="blockdsp idctdsp jpegtables"
1994 h261_decoder_select="mpeg_er mpegvideo"
1995 h261_encoder_select="aandcttables mpegvideoenc"
1996 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1997 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1998 h263i_decoder_select="h263_decoder"
1999 h263p_encoder_select="h263_encoder"
2000 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2001 h264_decoder_suggest="error_resilience"
2002 hap_decoder_select="snappy texturedsp"
2003 hap_encoder_deps="libsnappy"
2004 hap_encoder_select="texturedspenc"
2005 hevc_decoder_select="bswapdsp cabac hevc_ps videodsp"
2006 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2007 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2008 iac_decoder_select="imc_decoder"
2009 imc_decoder_select="bswapdsp fft mdct sinewin"
2010 indeo3_decoder_select="hpeldsp"
2011 indeo4_decoder_select="ividsp"
2012 indeo5_decoder_select="ividsp"
2013 interplay_video_decoder_select="hpeldsp"
2014 jpegls_decoder_select="mjpeg_decoder"
2015 jv_decoder_select="blockdsp"
2016 lagarith_decoder_select="huffyuvdsp"
2017 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2018 magicyuv_decoder_select="huffyuvdsp"
2019 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2020 metasound_decoder_select="lsp mdct sinewin"
2021 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2022 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2023 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2024 mjpegb_decoder_select="mjpeg_decoder"
2025 mlp_decoder_select="mlp_parser"
2026 motionpixels_decoder_select="bswapdsp"
2027 mp1_decoder_select="mpegaudio"
2028 mp1float_decoder_select="mpegaudio"
2029 mp2_decoder_select="mpegaudio"
2030 mp2float_decoder_select="mpegaudio"
2031 mp3_decoder_select="mpegaudio"
2032 mp3adu_decoder_select="mpegaudio"
2033 mp3adufloat_decoder_select="mpegaudio"
2034 mp3float_decoder_select="mpegaudio"
2035 mp3on4_decoder_select="mpegaudio"
2036 mp3on4float_decoder_select="mpegaudio"
2037 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2038 mpc8_decoder_select="mpegaudiodsp"
2039 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2040 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2041 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2042 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2043 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2044 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2045 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2046 mpeg4_encoder_select="h263_encoder"
2047 msa1_decoder_select="mss34dsp"
2048 msmpeg4v1_decoder_select="h263_decoder"
2049 msmpeg4v2_decoder_select="h263_decoder"
2050 msmpeg4v2_encoder_select="h263_encoder"
2051 msmpeg4v3_decoder_select="h263_decoder"
2052 msmpeg4v3_encoder_select="h263_encoder"
2053 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2054 mts2_decoder_select="mss34dsp"
2055 mxpeg_decoder_select="mjpeg_decoder"
2056 nellymoser_decoder_select="mdct sinewin"
2057 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2058 nuv_decoder_select="idctdsp lzo"
2059 on2avc_decoder_select="mdct"
2060 opus_decoder_deps="avresample"
2061 opus_decoder_select="imdct15"
2062 png_decoder_deps="zlib"
2063 png_encoder_deps="zlib"
2064 png_encoder_select="huffyuvencdsp"
2065 prores_decoder_select="idctdsp"
2066 prores_encoder_select="fdctdsp"
2067 qcelp_decoder_select="lsp"
2068 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2069 ra_144_encoder_select="audio_frame_queue lpc"
2070 ralf_decoder_select="golomb"
2071 rscc_decoder_deps="zlib"
2072 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2073 rv10_encoder_select="h263_encoder"
2074 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2075 rv20_encoder_select="h263_encoder"
2076 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2077 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2078 screenpresso_decoder_deps="zlib"
2079 sipr_decoder_select="lsp"
2080 sp5x_decoder_select="mjpeg_decoder"
2081 svq1_decoder_select="hpeldsp"
2082 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2083 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2084 svq3_decoder_suggest="zlib"
2085 tak_decoder_select="audiodsp"
2086 tdsc_decoder_deps="zlib"
2087 tdsc_decoder_select="mjpeg_decoder"
2088 theora_decoder_select="vp3_decoder"
2089 thp_decoder_select="mjpeg_decoder"
2090 tiff_decoder_suggest="zlib"
2091 tiff_encoder_suggest="zlib"
2092 truehd_decoder_select="mlp_decoder"
2093 truemotion2_decoder_select="bswapdsp"
2094 truespeech_decoder_select="bswapdsp"
2095 tscc_decoder_deps="zlib"
2096 txd_decoder_select="texturedsp"
2097 twinvq_decoder_select="mdct lsp sinewin"
2098 utvideo_decoder_select="bswapdsp"
2099 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2100 vble_decoder_select="huffyuvdsp"
2101 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2102 vc1image_decoder_select="vc1_decoder"
2103 vorbis_decoder_select="mdct"
2104 vorbis_encoder_select="mdct"
2105 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2106 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2107 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2108 vp6a_decoder_select="vp6_decoder"
2109 vp6f_decoder_select="vp6_decoder"
2110 vp7_decoder_select="h264pred videodsp vp8dsp"
2111 vp8_decoder_select="h264pred videodsp vp8dsp"
2112 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2113 webp_decoder_select="vp8_decoder"
2114 wmapro_decoder_select="mdct sinewin wma_freqs"
2115 wmav1_decoder_select="mdct sinewin wma_freqs"
2116 wmav1_encoder_select="mdct sinewin wma_freqs"
2117 wmav2_decoder_select="mdct sinewin wma_freqs"
2118 wmav2_encoder_select="mdct sinewin wma_freqs"
2119 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2120 wmv1_decoder_select="h263_decoder"
2121 wmv1_encoder_select="h263_encoder"
2122 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2123 wmv2_encoder_select="h263_encoder wmv2dsp"
2124 wmv3_decoder_select="vc1_decoder"
2125 wmv3image_decoder_select="wmv3_decoder"
2126 zerocodec_decoder_deps="zlib"
2127 zlib_decoder_deps="zlib"
2128 zlib_encoder_deps="zlib"
2129 zmbv_decoder_deps="zlib"
2130 zmbv_encoder_deps="zlib"
2131
2132 # hardware accelerators
2133 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2134 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2135 dxva2_lib_deps="dxva2"
2136 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2137 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2138
2139 h263_vaapi_hwaccel_deps="vaapi"
2140 h263_vaapi_hwaccel_select="h263_decoder"
2141 h264_d3d11va_hwaccel_deps="d3d11va"
2142 h264_d3d11va_hwaccel_select="h264_decoder"
2143 h264_dxva2_hwaccel_deps="dxva2"
2144 h264_dxva2_hwaccel_select="h264_decoder"
2145 h264_mmal_hwaccel_deps="mmal"
2146 h264_qsv_hwaccel_deps="libmfx"
2147 h264_vaapi_hwaccel_deps="vaapi"
2148 h264_vaapi_hwaccel_select="h264_decoder"
2149 h264_vda_hwaccel_deps="vda"
2150 h264_vda_hwaccel_select="h264_decoder"
2151 h264_vda_old_hwaccel_deps="vda"
2152 h264_vda_old_hwaccel_select="h264_decoder"
2153 h264_vdpau_hwaccel_deps="vdpau"
2154 h264_vdpau_hwaccel_select="h264_decoder"
2155 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2156 hevc_d3d11va_hwaccel_select="hevc_decoder"
2157 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2158 hevc_dxva2_hwaccel_select="hevc_decoder"
2159 hevc_qsv_hwaccel_deps="libmfx"
2160 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2161 hevc_vaapi_hwaccel_select="hevc_decoder"
2162 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2163 hevc_vdpau_hwaccel_select="hevc_decoder"
2164 mpeg1_vdpau_hwaccel_deps="vdpau"
2165 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2166 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2167 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2168 mpeg2_dxva2_hwaccel_deps="dxva2"
2169 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2170 mpeg2_mmal_hwaccel_deps="mmal"
2171 mpeg2_qsv_hwaccel_deps="libmfx"
2172 mpeg2_vaapi_hwaccel_deps="vaapi"
2173 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2174 mpeg2_vdpau_hwaccel_deps="vdpau"
2175 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
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_hwaccel_deps="mmal"
2185 vc1_qsv_hwaccel_deps="libmfx"
2186 vc1_vaapi_hwaccel_deps="vaapi"
2187 vc1_vaapi_hwaccel_select="vc1_decoder"
2188 vc1_vdpau_hwaccel_deps="vdpau"
2189 vc1_vdpau_hwaccel_select="vc1_decoder"
2190 vp8_qsv_hwaccel_deps="libmfx"
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 omx_rpi_select="omx"
2204 qsvdec_select="qsv"
2205 qsvenc_select="qsv"
2206 vaapi_encode_deps="vaapi"
2207
2208 hwupload_cuda_filter_deps="cuda"
2209 scale_npp_filter_deps="cuda libnpp"
2210
2211 h264_mmal_decoder_deps="mmal"
2212 h264_nvenc_encoder_deps="nvenc"
2213 h264_omx_encoder_deps="omx"
2214 h264_qsv_decoder_deps="libmfx"
2215 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2216 h264_qsv_encoder_deps="libmfx"
2217 h264_qsv_encoder_select="qsvenc"
2218 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2219 h264_vaapi_encoder_select="vaapi_encode golomb"
2220 hevc_nvenc_encoder_deps="nvenc"
2221 hevc_qsv_decoder_deps="libmfx"
2222 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2223 hevc_qsv_encoder_deps="libmfx"
2224 hevc_qsv_encoder_select="hevc_ps qsvenc"
2225 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2226 hevc_vaapi_encoder_select="vaapi_encode golomb"
2227 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2228 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2229 mpeg2_mmal_decoder_deps="mmal"
2230 mpeg2_qsv_decoder_deps="libmfx"
2231 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2232 mpeg2_qsv_encoder_deps="libmfx"
2233 mpeg2_qsv_encoder_select="qsvenc"
2234 mpeg4_omx_encoder_deps="omx"
2235 vc1_mmal_decoder_deps="mmal"
2236 vc1_qsv_decoder_deps="libmfx"
2237 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2238 vp8_qsv_decoder_deps="libmfx"
2239 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2240
2241 nvenc_h264_encoder_select="h264_nvenc_encoder"
2242 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2243
2244 # parsers
2245 h264_parser_select="golomb h264dsp h264parse"
2246 hevc_parser_select="hevc_ps"
2247 mpegaudio_parser_select="mpegaudioheader"
2248 mpegvideo_parser_select="mpegvideo"
2249 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2250 vc1_parser_select="vc1dsp"
2251
2252 # bitstream_filters
2253 mjpeg2jpeg_bsf_select="jpegtables"
2254
2255 # external libraries
2256 avisynth_deps="LoadLibrary"
2257 avxsynth_deps="dlopen"
2258 avisynth_demuxer_deps_any="avisynth avxsynth"
2259 avisynth_demuxer_select="riffdec"
2260 libdcadec_decoder_deps="libdcadec"
2261 libfaac_encoder_deps="libfaac"
2262 libfaac_encoder_select="audio_frame_queue"
2263 libfdk_aac_decoder_deps="libfdk_aac"
2264 libfdk_aac_encoder_deps="libfdk_aac"
2265 libfdk_aac_encoder_select="audio_frame_queue"
2266 libgsm_decoder_deps="libgsm"
2267 libgsm_encoder_deps="libgsm"
2268 libgsm_ms_decoder_deps="libgsm"
2269 libgsm_ms_encoder_deps="libgsm"
2270 libilbc_decoder_deps="libilbc"
2271 libilbc_encoder_deps="libilbc"
2272 libkvazaar_encoder_deps="libkvazaar"
2273 libmp3lame_encoder_deps="libmp3lame"
2274 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2275 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2276 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2277 libopencore_amrnb_encoder_select="audio_frame_queue"
2278 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2279 libopenh264_decoder_deps="libopenh264"
2280 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2281 libopenh264_encoder_deps="libopenh264"
2282 libopenjpeg_decoder_deps="libopenjpeg"
2283 libopenjpeg_encoder_deps="libopenjpeg"
2284 libopus_decoder_deps="libopus"
2285 libopus_encoder_deps="libopus"
2286 libopus_encoder_select="audio_frame_queue"
2287 libschroedinger_decoder_deps="libschroedinger"
2288 libschroedinger_encoder_deps="libschroedinger"
2289 libspeex_decoder_deps="libspeex"
2290 libspeex_encoder_deps="libspeex"
2291 libspeex_encoder_select="audio_frame_queue"
2292 libtheora_encoder_deps="libtheora"
2293 libtwolame_encoder_deps="libtwolame"
2294 libvo_aacenc_encoder_deps="libvo_aacenc"
2295 libvo_aacenc_encoder_select="audio_frame_queue"
2296 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2297 libvorbis_encoder_deps="libvorbis"
2298 libvorbis_encoder_select="audio_frame_queue"
2299 libvpx_vp8_decoder_deps="libvpx"
2300 libvpx_vp8_encoder_deps="libvpx"
2301 libvpx_vp9_decoder_deps="libvpx"
2302 libvpx_vp9_encoder_deps="libvpx"
2303 libwavpack_encoder_deps="libwavpack"
2304 libwavpack_encoder_select="audio_frame_queue"
2305 libwebp_encoder_deps="libwebp"
2306 libx262_encoder_deps="libx262"
2307 libx264_encoder_deps="libx264"
2308 libx265_encoder_deps="libx265"
2309 libxavs_encoder_deps="libxavs"
2310 libxvid_encoder_deps="libxvid mkstemp"
2311
2312 # demuxers / muxers
2313 ac3_demuxer_select="ac3_parser"
2314 asf_demuxer_select="riffdec"
2315 asf_muxer_select="riffenc"
2316 asf_stream_muxer_select="asf_muxer"
2317 avi_demuxer_select="iso_media riffdec"
2318 avi_muxer_select="riffenc"
2319 caf_demuxer_select="iso_media riffdec"
2320 dash_muxer_select="mp4_muxer"
2321 dirac_demuxer_select="dirac_parser"
2322 dv_demuxer_select="dvprofile"
2323 dv_muxer_select="dvprofile"
2324 dxa_demuxer_select="riffdec"
2325 eac3_demuxer_select="ac3_parser"
2326 f4v_muxer_select="mov_muxer"
2327 flac_demuxer_select="flac_parser"
2328 hds_muxer_select="flv_muxer"
2329 hls_muxer_select="mpegts_muxer"
2330 ipod_muxer_select="mov_muxer"
2331 ismv_muxer_select="mov_muxer"
2332 matroska_audio_muxer_select="matroska_muxer"
2333 matroska_demuxer_select="iso_media riffdec"
2334 matroska_demuxer_suggest="bzlib lzo zlib"
2335 matroska_muxer_select="iso_media riffenc"
2336 mmf_muxer_select="riffenc"
2337 mov_demuxer_select="iso_media riffdec"
2338 mov_demuxer_suggest="zlib"
2339 mov_muxer_select="iso_media riffenc rtpenc_chain"
2340 mp3_demuxer_select="mpegaudio_parser"
2341 mp3_muxer_select="mpegaudioheader"
2342 mp4_muxer_select="mov_muxer"
2343 mpegts_demuxer_select="iso_media"
2344 mpegts_muxer_select="adts_muxer latm_muxer"
2345 mpegtsraw_demuxer_select="mpegts_demuxer"
2346 mxf_d10_muxer_select="mxf_muxer"
2347 nut_muxer_select="riffenc"
2348 nuv_demuxer_select="riffdec"
2349 oga_muxer_select="ogg_muxer"
2350 ogg_demuxer_select="dirac_parse"
2351 opus_muxer_select="ogg_muxer"
2352 psp_muxer_select="mov_muxer"
2353 rtp_demuxer_select="sdp_demuxer"
2354 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2355 rtsp_demuxer_select="http_protocol rtpdec"
2356 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2357 sap_demuxer_select="sdp_demuxer"
2358 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2359 sdp_demuxer_select="rtpdec"
2360 smoothstreaming_muxer_select="ismv_muxer"
2361 spdif_muxer_select="aac_parser"
2362 spx_muxer_select="ogg_muxer"
2363 swf_demuxer_suggest="zlib"
2364 tak_demuxer_select="tak_parser"
2365 tg2_muxer_select="mov_muxer"
2366 tgp_muxer_select="mov_muxer"
2367 w64_demuxer_select="wav_demuxer"
2368 wav_demuxer_select="riffdec"
2369 wav_muxer_select="riffenc"
2370 webm_muxer_select="iso_media riffenc"
2371 webm_muxer_suggest="libopus_encoder libvorbis_encoder libvpx_vp8_encoder libvpx_vp9_encoder"
2372 wtv_demuxer_select="mpegts_demuxer riffdec"
2373 xmv_demuxer_select="riffdec"
2374 xwma_demuxer_select="riffdec"
2375
2376 # indevs / outdevs
2377 alsa_indev_deps="alsa"
2378 alsa_outdev_deps="alsa"
2379 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2380 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2381 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2382 dv1394_indev_deps="dv1394"
2383 dv1394_indev_select="dv_demuxer"
2384 fbdev_indev_deps="linux_fb_h"
2385 jack_indev_deps="jack"
2386 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2387 libcdio_indev_deps="libcdio"
2388 libdc1394_indev_deps="libdc1394"
2389 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2390 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2391 pulse_indev_deps="libpulse"
2392 sndio_indev_deps="sndio"
2393 sndio_outdev_deps="sndio"
2394 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2395 vfwcap_indev_deps="vfw32 vfwcap_defines"
2396 xcbgrab_indev_deps="libxcb"
2397
2398 # protocols
2399 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2400 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2401 ffrtmpcrypt_protocol_select="tcp_protocol"
2402 ffrtmphttp_protocol_deps="!librtmp_protocol"
2403 ffrtmphttp_protocol_select="http_protocol"
2404 gopher_protocol_select="network"
2405 http_protocol_select="tcp_protocol"
2406 httpproxy_protocol_select="tcp_protocol"
2407 https_protocol_select="tls_protocol"
2408 icecast_protocol_select="http_protocol"
2409 librtmp_protocol_deps="librtmp"
2410 librtmpe_protocol_deps="librtmp"
2411 librtmps_protocol_deps="librtmp"
2412 librtmpt_protocol_deps="librtmp"
2413 librtmpte_protocol_deps="librtmp"
2414 mmsh_protocol_select="http_protocol"
2415 mmst_protocol_select="network"
2416 rtmp_protocol_deps="!librtmp_protocol"
2417 rtmp_protocol_select="tcp_protocol"
2418 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2419 rtmps_protocol_deps="!librtmp_protocol"
2420 rtmps_protocol_select="tls_protocol"
2421 rtmpt_protocol_select="ffrtmphttp_protocol"
2422 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2423 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2424 rtp_protocol_select="udp_protocol"
2425 sctp_protocol_deps="struct_sctp_event_subscribe"
2426 sctp_protocol_select="network"
2427 srtp_protocol_select="rtp_protocol srtp"
2428 tcp_protocol_select="network"
2429 tls_gnutls_protocol_deps="gnutls"
2430 tls_gnutls_protocol_select="tcp_protocol"
2431 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2432 tls_openssl_protocol_select="tcp_protocol"
2433 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2434 udp_protocol_select="network"
2435 unix_protocol_deps="sys_un_h"
2436 unix_protocol_select="network"
2437
2438 # filters
2439 asyncts_filter_deps="avresample"
2440 blackframe_filter_deps="gpl"
2441 boxblur_filter_deps="gpl"
2442 bs2b_filter_deps="libbs2b"
2443 cropdetect_filter_deps="gpl"
2444 deinterlace_qsv_filter_deps="libmfx"
2445 deinterlace_vaapi_filter_deps="vaapi"
2446 delogo_filter_deps="gpl"
2447 drawtext_filter_deps="libfreetype"
2448 frei0r_filter_deps="frei0r dlopen"
2449 frei0r_filter_extralibs='$ldl'
2450 frei0r_src_filter_deps="frei0r dlopen"
2451 frei0r_src_filter_extralibs='$ldl'
2452 hdcd_filter_deps="libhdcd"
2453 hqdn3d_filter_deps="gpl"
2454 interlace_filter_deps="gpl"
2455 movie_filter_deps="avcodec avformat"
2456 ocv_filter_deps="libopencv"
2457 resample_filter_deps="avresample"
2458 scale_filter_deps="swscale"
2459 scale_qsv_filter_deps="libmfx"
2460 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2461
2462 # examples
2463 decode_audio_example_deps="avcodec avutil"
2464 decode_video_example_deps="avcodec avutil"
2465 encode_audio_example_deps="avcodec avutil"
2466 encode_video_example_deps="avcodec avutil"
2467 filter_audio_example_deps="avfilter avutil"
2468 metadata_example_deps="avformat avutil"
2469 output_example_deps="avcodec avformat avresample avutil swscale"
2470 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2471 transcode_aac_example_deps="avcodec avformat avresample"
2472
2473 # libraries, in linking order
2474 avcodec_deps="avutil"
2475 avcodec_select="null_bsf"
2476 avdevice_deps="avformat avcodec avutil"
2477 avfilter_deps="avutil"
2478 avformat_deps="avcodec avutil"
2479 avresample_deps="avutil"
2480 swscale_deps="avutil"
2481
2482 # programs
2483 avconv_deps="avcodec avfilter avformat avresample swscale"
2484 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2485                fps_filter null_filter resample_filter scale_filter
2486                trim_filter"
2487 avplay_deps="avcodec avfilter avformat avresample sdl"
2488 avplay_extralibs='$sdl_extralibs'
2489 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2490 avprobe_deps="avcodec avformat"
2491
2492 # documentation
2493 pod2man_deps="doc"
2494 texi2html_deps="doc"
2495
2496 # default parameters
2497
2498 logfile="avbuild/config.log"
2499
2500 # installation paths
2501 prefix_default="/usr/local"
2502 bindir_default='${prefix}/bin'
2503 datadir_default='${prefix}/share/avconv'
2504 docdir_default='${prefix}/share/doc/libav'
2505 incdir_default='${prefix}/include'
2506 libdir_default='${prefix}/lib'
2507 mandir_default='${prefix}/share/man'
2508 shlibdir_default="$libdir_default"
2509
2510 # toolchain
2511 ar_default="ar"
2512 cc_default="gcc"
2513 host_cc_default="gcc"
2514 ln_s="ln -s -f"
2515 nm_default="nm -g"
2516 objformat="elf"
2517 pkg_config_default=pkg-config
2518 ranlib="ranlib"
2519 strip="strip"
2520 version_script='--version-script'
2521 yasmexe="yasm"
2522
2523 # machine
2524 arch_default=$(uname -m)
2525 cpu="generic"
2526 intrinsics="none"
2527
2528 # OS
2529 target_os_default=$(tolower $(uname -s))
2530 host_os=$target_os_default
2531
2532 # configurable options
2533 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2534
2535 enable asm
2536 enable debug
2537 enable doc
2538 enable faan faandct faanidct
2539 enable optimizations
2540 enable safe_bitstream_reader
2541 enable static
2542 enable swscale_alpha
2543 enable valgrind_backtrace
2544
2545 # By default, enable only those hwaccels that have no external dependencies.
2546 enable d3d11va dxva2 vda vdpau
2547
2548 # build settings
2549 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2550 LIBPREF="lib"
2551 LIBSUF=".a"
2552 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2553 SLIBPREF="lib"
2554 SLIBSUF=".so"
2555 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2556 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2557 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2558 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2559 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2560 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2561 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2562
2563 asflags_filter=echo
2564 cflags_filter=echo
2565 ldflags_filter=echo
2566
2567 AS_C='-c'
2568 AS_O='-o $@'
2569 CC_C='-c'
2570 CC_E='-E -o $@'
2571 CC_O='-o $@'
2572 OBJCC_C='-c'
2573 OBJCC_E='-E -o $@'
2574 OBJCC_O='-o $@'
2575 LD_O='-o $@'
2576 LD_LIB='-l%'
2577 LD_PATH='-L'
2578 HOSTCC_C='-c'
2579 HOSTCC_E='-E -o $@'
2580 HOSTCC_O='-o $@'
2581 HOSTLD_O='-o $@'
2582
2583 host_extralibs='-lm'
2584 host_cflags_filter=echo
2585 host_ldflags_filter=echo
2586
2587 target_path='$(CURDIR)'
2588
2589 # since the object filename is not given with the -MM flag, the compiler
2590 # is only able to print the basename, and we must add the path ourselves
2591 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2592 DEPFLAGS='-MM'
2593
2594 # find source path
2595 if test -f configure; then
2596     source_path=.
2597 else
2598     source_path=$(cd $(dirname "$0"); pwd)
2599     echo "$source_path" | grep -q '[[:blank:]]' &&
2600         die "Out of tree builds are impossible with whitespace in source path."
2601     test -e "$source_path/config.h" &&
2602         die "Out of tree builds are impossible with config.h in source dir."
2603 fi
2604
2605 for v in "$@"; do
2606     r=${v#*=}
2607     l=${v%"$r"}
2608     r=$(sh_quote "$r")
2609     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2610 done
2611
2612 find_things(){
2613     thing=$1
2614     pattern=$2
2615     file=$source_path/$3
2616     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2617 }
2618
2619 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2620 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2621 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2622 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2623 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2624 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2625 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2626 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2627 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2628
2629 find_things_extern(){
2630     thing=$1
2631     pattern=$2
2632     file=$source_path/$3
2633     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2634 }
2635
2636 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2637 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2638
2639 ALL_COMPONENTS="
2640     $BSF_LIST
2641     $DECODER_LIST
2642     $DEMUXER_LIST
2643     $ENCODER_LIST
2644     $FILTER_LIST
2645     $HWACCEL_LIST
2646     $INDEV_LIST
2647     $MUXER_LIST
2648     $OUTDEV_LIST
2649     $PARSER_LIST
2650     $PROTOCOL_LIST
2651 "
2652
2653 for n in $COMPONENT_LIST; do
2654     v=$(toupper ${n%s})_LIST
2655     eval enable \$$v
2656     eval ${n}_if_any="\$$v"
2657 done
2658
2659 enable $ARCH_EXT_LIST
2660
2661 die_unknown(){
2662     echo "Unknown option \"$1\"."
2663     echo "See $0 --help for available options."
2664     exit 1
2665 }
2666
2667 print_3_columns() {
2668     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2669 }
2670
2671 show_list() {
2672     suffix=_$1
2673     shift
2674     echo $* | sed s/$suffix//g | print_3_columns
2675     exit 0
2676 }
2677
2678 rand_list(){
2679     IFS=', '
2680     set -- $*
2681     unset IFS
2682     for thing; do
2683         comp=${thing%:*}
2684         prob=${thing#$comp}
2685         prob=${prob#:}
2686         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2687         echo "prob ${prob:-0.5}"
2688         printf '%s\n' $comp
2689     done
2690 }
2691
2692 do_random(){
2693     action=$1
2694     shift
2695     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2696     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2697 }
2698
2699 for opt do
2700     optval="${opt#*=}"
2701     case "$opt" in
2702         --extra-ldflags=*)
2703             add_ldflags $optval
2704         ;;
2705         --extra-ldexeflags=*)
2706             add_ldexeflags $optval
2707         ;;
2708         --extra-libs=*)
2709             add_extralibs $optval
2710         ;;
2711         --disable-devices)
2712             disable $INDEV_LIST $OUTDEV_LIST
2713         ;;
2714         --enable-debug=*)
2715             debuglevel="$optval"
2716         ;;
2717         --disable-programs)
2718             disable $PROGRAM_LIST
2719         ;;
2720         --disable-everything)
2721             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2722         ;;
2723         --disable-all)
2724             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2725             disable $LIBRARY_LIST $PROGRAM_LIST doc
2726         ;;
2727         --enable-random|--disable-random)
2728             action=${opt%%-random}
2729             do_random ${action#--} $COMPONENT_LIST
2730         ;;
2731         --enable-random=*|--disable-random=*)
2732             action=${opt%%-random=*}
2733             do_random ${action#--} $optval
2734         ;;
2735         --enable-*=*|--disable-*=*)
2736             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2737             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2738             eval list=\$$(toupper $thing)_LIST
2739             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2740             $action $(filter "$name" $list)
2741         ;;
2742         --enable-avserver|--disable-avserver*)
2743             warn "avserver has been removed, the ${opt} option is only"\
2744                  "provided for compatibility and will be removed in the future"
2745         ;;
2746         --enable-?*|--disable-?*)
2747             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2748             if is_in $option $COMPONENT_LIST; then
2749                 test $action = disable && action=unset
2750                 eval $action \$$(toupper ${option%s})_LIST
2751             elif is_in $option $CMDLINE_SELECT; then
2752                 $action $option
2753             else
2754                 die_unknown $opt
2755             fi
2756         ;;
2757         --list-*)
2758             NAME="${opt#--list-}"
2759             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2760             NAME=${NAME%s}
2761             eval show_list $NAME \$$(toupper $NAME)_LIST
2762         ;;
2763         --help|-h) show_help
2764         ;;
2765         --quiet|-q) quiet=yes
2766         ;;
2767         *)
2768             optname="${opt%%=*}"
2769             optname="${optname#--}"
2770             optname=$(echo "$optname" | sed 's/-/_/g')
2771             if is_in $optname $CMDLINE_SET; then
2772                 eval $optname='$optval'
2773             elif is_in $optname $CMDLINE_APPEND; then
2774                 append $optname "$optval"
2775             else
2776                 die_unknown $opt
2777             fi
2778         ;;
2779     esac
2780 done
2781
2782 for e in $env; do
2783     eval "export $e"
2784 done
2785
2786 disabled logging && logfile=/dev/null
2787
2788 # Die early if licensing-related configure options are incompatible.
2789 die_license_disabled() {
2790     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2791 }
2792
2793 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2794 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2795 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2796
2797 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2798
2799 # Disable all the library-specific components if the library itself
2800 # is disabled, see AVCODEC_LIST and following _LIST variables.
2801
2802 disable_components(){
2803     disabled ${1} && disable $(
2804         eval components="\$$(toupper ${1})_COMPONENTS"
2805         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2806     )
2807 }
2808
2809 map 'disable_components $v' $LIBRARY_LIST
2810
2811 mkdir -p avbuild
2812 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2813 set >> $logfile
2814
2815 case "$toolchain" in
2816     *-asan)
2817         cc_default="${toolchain%-asan}"
2818         add_cflags  -fsanitize=address
2819         add_ldflags -fsanitize=address
2820     ;;
2821     *-msan)
2822         cc_default="${toolchain%-msan}"
2823         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2824         add_ldflags -fsanitize=memory
2825     ;;
2826     *-tsan)
2827         cc_default="${toolchain%-tsan}"
2828         add_cflags  -fsanitize=thread -fPIE
2829         add_ldflags -fsanitize=thread -pie
2830         case "$toolchain" in
2831             gcc-tsan)
2832                 add_cflags  -fPIC
2833                 add_ldflags -fPIC
2834                 ;;
2835         esac
2836     ;;
2837     *-usan)
2838         cc_default="${toolchain%-usan}"
2839         add_cflags  -fsanitize=undefined
2840         add_ldflags -fsanitize=undefined
2841         case "$toolchain" in
2842             clang-usan)
2843                 add_cflags -O1
2844                 ;;
2845         esac
2846     ;;
2847     valgrind-*)
2848         target_exec_default="valgrind"
2849         case "$toolchain" in
2850             valgrind-massif)
2851                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2852                 ;;
2853             valgrind-memcheck)
2854                 target_exec_args="--track-origins=yes --leak-check=full"
2855                 ;;
2856         esac
2857     ;;
2858     msvc)
2859         # Check whether the current MSVC version needs the C99 converter.
2860         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2861         # support enough of C99 to build libav. Default to the new
2862         # behaviour if the regexp was unable to match anything, since this
2863         # successfully parses the version number of existing supported
2864         # versions that require the converter (MSVC 2010 and 2012).
2865         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2866         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2867             cc_default="cl"
2868         else
2869             cc_default="c99wrap cl"
2870         fi
2871         ld_default="$source_path/compat/windows/mslink"
2872         nm_default="dumpbin -symbols"
2873         ar_default="lib"
2874         case "$arch" in
2875         arm*)
2876             as_default="armasm"
2877             ;;
2878         esac
2879         target_os_default="win32"
2880         # Use a relative path for TMPDIR. This makes sure all the
2881         # ffconf temp files are written with a relative path, avoiding
2882         # issues with msys/win32 path conversion for MSVC parameters
2883         # such as -Fo<file> or -out:<file>.
2884         TMPDIR=.
2885     ;;
2886     icl)
2887         cc_default="icl"
2888         ld_default="xilink"
2889         nm_default="dumpbin -symbols"
2890         ar_default="xilib"
2891         target_os_default="win32"
2892         TMPDIR=.
2893     ;;
2894     gcov)
2895         add_cflags  -fprofile-arcs -ftest-coverage
2896         add_ldflags -fprofile-arcs -ftest-coverage
2897     ;;
2898     llvm-cov)
2899         add_cflags -fprofile-arcs -ftest-coverage
2900         add_ldflags --coverage
2901     ;;
2902     hardened)
2903         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2904         add_cflags   -fno-strict-overflow -fstack-protector-all
2905         add_ldflags  -Wl,-z,relro -Wl,-z,now
2906     ;;
2907     ?*)
2908         die "Unknown toolchain $toolchain"
2909     ;;
2910 esac
2911
2912 test -n "$cross_prefix" && enable cross_compile
2913
2914 if enabled cross_compile; then
2915     test -n "$arch" && test -n "$target_os" ||
2916         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
2917 fi
2918
2919 ar_default="${cross_prefix}${ar_default}"
2920 cc_default="${cross_prefix}${cc_default}"
2921 occ_default="${cross_prefix}${occ_default}"
2922 nm_default="${cross_prefix}${nm_default}"
2923 pkg_config_default="${cross_prefix}${pkg_config_default}"
2924 ranlib="${cross_prefix}${ranlib}"
2925 strip="${cross_prefix}${strip}"
2926
2927 sysinclude_default="${sysroot}/usr/include"
2928
2929 set_default arch cc pkg_config sysinclude target_exec target_os
2930 enabled cross_compile || host_cc_default=$cc
2931 set_default host_cc
2932
2933 if ! $pkg_config --version >/dev/null 2>&1; then
2934     warn "$pkg_config not found, library detection may fail."
2935     pkg_config=false
2936 fi
2937
2938 exesuf() {
2939     case $1 in
2940         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2941     esac
2942 }
2943
2944 EXESUF=$(exesuf $target_os)
2945 HOSTEXESUF=$(exesuf $host_os)
2946
2947 # set temporary file name
2948 : ${TMPDIR:=$TEMPDIR}
2949 : ${TMPDIR:=$TMP}
2950 : ${TMPDIR:=/tmp}
2951
2952 if ! check_cmd mktemp -u XXXXXX; then
2953     # simple replacement for missing mktemp
2954     # NOT SAFE FOR GENERAL USE
2955     mktemp(){
2956         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2957     }
2958 fi
2959
2960 tmpfile(){
2961     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2962         (set -C; exec > $tmp) 2>/dev/null ||
2963         die "Unable to create temporary file in $TMPDIR."
2964     append TMPFILES $tmp
2965     eval $1=$tmp
2966 }
2967
2968 trap 'rm -f -- $TMPFILES' EXIT
2969
2970 tmpfile TMPASM .asm
2971 tmpfile TMPC   .c
2972 tmpfile TMPE   $EXESUF
2973 tmpfile TMPH   .h
2974 tmpfile TMPO   .o
2975 tmpfile TMPS   .S
2976 tmpfile TMPSH  .sh
2977 tmpfile TMPV   .ver
2978
2979 unset -f mktemp
2980
2981 chmod +x $TMPE
2982
2983 # make sure we can execute files in $TMPDIR
2984 cat > $TMPSH 2>> $logfile <<EOF
2985 #! /bin/sh
2986 EOF
2987 chmod +x $TMPSH >> $logfile 2>&1
2988 if ! $TMPSH >> $logfile 2>&1; then
2989     cat <<EOF
2990 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2991 variable to another directory and make sure that it is not mounted noexec.
2992 EOF
2993     die "Sanity test failed."
2994 fi
2995
2996 armasm_flags(){
2997     for flag; do
2998         case $flag in
2999             # Filter out MSVC cl.exe options from cflags that shouldn't
3000             # be passed to gas-preprocessor
3001             -M[TD]*)                                            ;;
3002             *)                  echo $flag                      ;;
3003         esac
3004    done
3005 }
3006
3007 ccc_flags(){
3008     for flag; do
3009         case $flag in
3010             -std=c99)           echo -c99                       ;;
3011             -mcpu=*)            echo -arch ${flag#*=}           ;;
3012             -mieee)             echo -ieee                      ;;
3013             -O*|-fast)          echo $flag                      ;;
3014             -fno-math-errno)    echo -assume nomath_errno       ;;
3015             -g)                 echo -g3                        ;;
3016             -Wall)              echo -msg_enable level2         ;;
3017             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3018             -Wl,*)              echo $flag                      ;;
3019             -f*|-W*)                                            ;;
3020             *)                  echo $flag                      ;;
3021         esac
3022    done
3023 }
3024
3025 cparser_flags(){
3026     for flag; do
3027         case $flag in
3028             -Wno-switch)             echo -Wno-switch-enum ;;
3029             -Wno-format-zero-length) ;;
3030             -Wdisabled-optimization) ;;
3031             -Wno-pointer-sign)       echo -Wno-other ;;
3032             *)                       echo $flag ;;
3033         esac
3034     done
3035 }
3036
3037 msvc_common_flags(){
3038     for flag; do
3039         case $flag in
3040             # In addition to specifying certain flags under the compiler
3041             # specific filters, they must be specified here as well or else the
3042             # generic catch all at the bottom will print the original flag.
3043             -Wall)                ;;
3044             -std=c99)             ;;
3045             # Common flags
3046             -fomit-frame-pointer) ;;
3047             -g)                   echo -Z7 ;;
3048             -fno-math-errno)      ;;
3049             -fno-common)          ;;
3050             -fno-signed-zeros)    ;;
3051             -fPIC)                ;;
3052             -mthumb)              ;;
3053             -march=*)             ;;
3054             -lz)                  echo zlib.lib ;;
3055             -lx264)               echo libx264.lib ;;
3056             -l*)                  echo ${flag#-l}.lib ;;
3057             -L*)                  echo -libpath:${flag#-L} ;;
3058             *)                    echo $flag ;;
3059         esac
3060     done
3061 }
3062
3063 msvc_flags(){
3064     msvc_common_flags "$@"
3065     for flag; do
3066         case $flag in
3067             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3068                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3069                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3070                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3071         esac
3072     done
3073 }
3074
3075 icl_flags(){
3076     msvc_common_flags "$@"
3077     for flag; do
3078         case $flag in
3079             # Despite what Intel's documentation says -Wall, which is supported
3080             # on Windows, does enable remarks so disable them here.
3081             -Wall)                echo $flag -Qdiag-disable:remark ;;
3082             -std=c99)             echo -Qstd=c99 ;;
3083         esac
3084     done
3085 }
3086
3087 pgi_flags(){
3088     for flag; do
3089         case $flag in
3090             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3091             -fomit-frame-pointer) echo -Mnoframe ;;
3092             -g)                   echo -gopt ;;
3093             *)                    echo $flag ;;
3094         esac
3095     done
3096 }
3097
3098 suncc_flags(){
3099     for flag; do
3100         case $flag in
3101             -march=*|-mcpu=*)
3102                 case "${flag#*=}" in
3103                     native)                   echo -xtarget=native       ;;
3104                     v9|niagara)               echo -xarch=sparc          ;;
3105                     ultrasparc)               echo -xarch=sparcvis       ;;
3106                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3107                     i586|pentium)             echo -xchip=pentium        ;;
3108                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3109                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3110                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3111                     pentium4*)          echo -xtarget=pentium4           ;;
3112                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3113                     *-sse3)             echo -xarch=sse3                 ;;
3114                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3115                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3116                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3117                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3118                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3119                     k8|opteron|athlon64|athlon-fx)
3120                                                echo -xarch=sse2a         ;;
3121                     athlon*)                   echo -xarch=pentium_proa  ;;
3122                 esac
3123                 ;;
3124             -std=c99)             echo -xc99              ;;
3125             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3126             -fPIC)                echo -KPIC -xcode=pic32 ;;
3127             -W*,*)                echo $flag              ;;
3128             -f*-*|-W*|-mimpure-text)                      ;;
3129             -shared)              echo -G                 ;;
3130             *)                    echo $flag              ;;
3131         esac
3132     done
3133 }
3134
3135 tms470_flags(){
3136     for flag; do
3137         case $flag in
3138             -march=*|-mcpu=*)
3139                 case "${flag#*=}" in
3140                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3141                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3142                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3143                     armv6*|arm11*)          echo -mv=6   ;;
3144                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3145                                             echo -mv=5e  ;;
3146                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3147                 esac
3148                 ;;
3149             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3150             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3151             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3152             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3153             -msoft-float)   echo --float_support=vfplib       ;;
3154             -O[0-3]|-mf=*)  echo $flag                        ;;
3155             -g)             echo -g -mn                       ;;
3156             -pds=*)         echo $flag                        ;;
3157             -D*|-I*)        echo $flag                        ;;
3158             --gcc|--abi=*)  echo $flag                        ;;
3159             -me)            echo $flag                        ;;
3160         esac
3161     done
3162 }
3163
3164 probe_cc(){
3165     pfx=$1
3166     _cc=$2
3167
3168     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3169     unset _ld_o _ldflags _ld_lib _ld_path
3170     unset _depflags _DEPCMD _DEPFLAGS
3171     _flags_filter=echo
3172
3173     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3174         _type=llvm_gcc
3175         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3176         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3177         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3178         _cflags_speed='-O3'
3179         _cflags_size='-Os'
3180     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3181         _type=gcc
3182         gcc_version=$($_cc --version | head -n1)
3183         gcc_basever=$($_cc -dumpversion)
3184         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3185         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3186         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3187         if ! $_cc -dumpversion | grep -q '^2\.'; then
3188             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3189         fi
3190         _cflags_speed='-O3'
3191         _cflags_size='-Os'
3192     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3193         _type=icc
3194         _ident=$($_cc --version | head -n1)
3195         _depflags='-MMD'
3196         _cflags_speed='-O3'
3197         _cflags_size='-Os'
3198         _cflags_noopt='-O1'
3199     elif $_cc -v 2>&1 | grep -q xlc; then
3200         _type=xlc
3201         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3202         _cflags_speed='-O5'
3203         _cflags_size='-O5 -qcompact'
3204     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3205         _type=ccc
3206         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3207         _DEPFLAGS='-M'
3208         _cflags_speed='-fast'
3209         _cflags_size='-O1'
3210         _flags_filter=ccc_flags
3211     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3212         test -d "$sysroot" || die "No valid sysroot specified."
3213         _type=armcc
3214         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3215         armcc_conf="$PWD/armcc.conf"
3216         $_cc --arm_linux_configure                 \
3217              --arm_linux_config_file="$armcc_conf" \
3218              --configure_sysroot="$sysroot"        \
3219              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3220              die "Error creating armcc configuration file."
3221         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3222         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3223         as_default="${cross_prefix}gcc"
3224         _depflags='-MMD'
3225         _cflags_speed='-O3'
3226         _cflags_size='-Os'
3227     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3228         _type=tms470
3229         _ident=$($_cc -version | head -n1 | tr -s ' ')
3230         _flags='--gcc --abi=eabi -me'
3231         _cc_e='-ppl -fe=$@'
3232         _cc_o='-fe=$@'
3233         _depflags='-ppa -ppd=$(@:.o=.d)'
3234         _cflags_speed='-O3 -mf=5'
3235         _cflags_size='-O3 -mf=2'
3236         _flags_filter=tms470_flags
3237     elif $_cc -v 2>&1 | grep -q clang; then
3238         _type=clang
3239         _ident=$($_cc --version 2>/dev/null | head -n1)
3240         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3241         _cflags_speed='-O3'
3242         _cflags_size='-Os'
3243     elif $_cc -V 2>&1 | grep -q Sun; then
3244         _type=suncc
3245         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3246         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3247         _DEPFLAGS='-xM1 -xc99'
3248         _ldflags='-std=c99'
3249         _cflags_speed='-O5'
3250         _cflags_size='-O5 -xspace'
3251         _flags_filter=suncc_flags
3252     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3253         _type=pathscale
3254         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3255         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3256         _cflags_speed='-O2'
3257         _cflags_size='-Os'
3258         _flags_filter='filter_out -Wdisabled-optimization'
3259     elif $_cc -v 2>&1 | grep -q Open64; then
3260         _type=open64
3261         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3262         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3263         _cflags_speed='-O2'
3264         _cflags_size='-Os'
3265         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3266     elif $_cc -V 2>&1 | grep -q Portland; then
3267         _type=pgi
3268         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3269         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3270         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3271         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3272         _cflags_noopt="-O1"
3273         _flags_filter=pgi_flags
3274     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3275         _type=armasm
3276         _ident=$($_cc | head -n1)
3277         # 4509: "This form of conditional instruction is deprecated"
3278         _flags="-nologo -ignore 4509"
3279         _flags_filter=armasm_flags
3280     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3281         _type=msvc
3282         _ident=$($_cc 2>&1 | head -n1)
3283         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3284         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3285         _cflags_speed="-O2"
3286         _cflags_size="-O1"
3287         _cflags_noopt="-O1"
3288         if $_cc -nologo- 2>&1 | grep -q Linker; then
3289             _ld_o='-out:$@'
3290         else
3291             _ld_o='-Fe$@'
3292         fi
3293         _cc_o='-Fo$@'
3294         _cc_e='-P -Fi$@'
3295         _flags_filter=msvc_flags
3296         _ld_lib='lib%.a'
3297         _ld_path='-libpath:'
3298         _flags='-nologo'
3299     elif $_cc 2>&1 | grep -q Intel; then
3300         _type=icl
3301         _ident=$($_cc 2>&1 | head -n1)
3302         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3303         # Not only is O3 broken on 13.x+ but it is slower on all previous
3304         # versions (tested) as well.
3305         _cflags_speed="-O2"
3306         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3307         if $_cc 2>&1 | grep -q Linker; then
3308             _ld_o='-out:$@'
3309         else
3310             _ld_o='-Fe$@'
3311         fi
3312         _cc_o='-Fo$@'
3313         _cc_e='-P'
3314         _flags_filter=icl_flags
3315         _ld_lib='lib%.a'
3316         _ld_path='-libpath:'
3317         # -Qdiag-error to make icl error when seeing certain unknown arguments
3318         _flags='-nologo -Qdiag-error:4044,10157'
3319         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3320         # with MSVC which enables it by default.
3321         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3322     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3323         # lld can emulate multiple different linkers; in ms link.exe mode,
3324         # the -? parameter gives the help output which contains an identifyable
3325         # string, while it gives an error in other modes.
3326         _type=lld-link
3327         # The link.exe mode doesn't have a switch for getting the version,
3328         # but we can force it back to gnu mode and get the version from there.
3329         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3330         _ld_o='-out:$@'
3331         _flags_filter=msvc_flags
3332         _ld_lib='lib%.a'
3333         _ld_path='-libpath:'
3334     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3335         _type=cparser
3336         _ident=$($_cc --version | head -n1)
3337         _depflags='-MMD'
3338         _cflags_speed='-O4'
3339         _cflags_size='-O2'
3340         _flags_filter=cparser_flags
3341     fi
3342
3343     eval ${pfx}_type=\$_type
3344     eval ${pfx}_ident=\$_ident
3345 }
3346
3347 set_ccvars(){
3348     eval ${1}_C=\${_cc_c-\${${1}_C}}
3349     eval ${1}_E=\${_cc_e-\${${1}_E}}
3350     eval ${1}_O=\${_cc_o-\${${1}_O}}
3351
3352     if [ -n "$_depflags" ]; then
3353         eval ${1}_DEPFLAGS=\$_depflags
3354     else
3355         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3356         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3357         eval DEP${1}FLAGS=\$_flags
3358     fi
3359 }
3360
3361 probe_cc cc "$cc"
3362 cflags_filter=$_flags_filter
3363 cflags_speed=$_cflags_speed
3364 cflags_size=$_cflags_size
3365 cflags_noopt=$_cflags_noopt
3366 add_cflags $_flags $_cflags
3367 cc_ldflags=$_ldflags
3368 set_ccvars CC
3369
3370 probe_cc hostcc "$host_cc"
3371 host_cflags_filter=$_flags_filter
3372 add_host_cflags  $_flags $_cflags
3373 set_ccvars HOSTCC
3374
3375 test -n "$cc_type" && enable $cc_type ||
3376     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3377
3378 : ${as_default:=$cc}
3379 : ${objcc_default:=$cc}
3380 : ${dep_cc_default:=$cc}
3381 : ${ld_default:=$cc}
3382 : ${host_ld_default:=$host_cc}
3383 set_default ar as objcc dep_cc ld host_ld
3384
3385 probe_cc as "$as"
3386 asflags_filter=$_flags_filter
3387 add_asflags $_flags $_cflags
3388 set_ccvars AS
3389
3390 probe_cc objcc "$objcc"
3391 objcflags_filter=$_flags_filter
3392 add_objcflags $_flags $_cflags
3393 set_ccvars OBJC
3394
3395 probe_cc ld "$ld"
3396 ldflags_filter=$_flags_filter
3397 add_ldflags $_flags $_ldflags
3398 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3399 LD_O=${_ld_o-$LD_O}
3400 LD_LIB=${_ld_lib-$LD_LIB}
3401 LD_PATH=${_ld_path-$LD_PATH}
3402
3403 probe_cc hostld "$host_ld"
3404 host_ldflags_filter=$_flags_filter
3405 add_host_ldflags $_flags $_ldflags
3406 HOSTLD_O=${_ld_o-$HOSTLD_O}
3407
3408 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3409     probe_cc depcc "$dep_cc"
3410     CCDEP=${_DEPCMD:-$DEPCMD}
3411     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3412     DEPCCFLAGS=$_flags
3413 fi
3414
3415 if $ar 2>&1 | grep -q Microsoft; then
3416     arflags="-nologo"
3417     ar_o='-out:$@'
3418 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3419     arflags="rq"
3420     ar_o='$@'
3421 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3422     arflags='-Xany -r -c'
3423     ar_o='$@'
3424 else
3425     arflags="rc"
3426     ar_o='$@'
3427 fi
3428
3429 add_cflags $extra_cflags
3430 add_objcflags $extra_objcflags
3431 add_asflags $extra_cflags
3432
3433 if test -n "$sysroot"; then
3434     case "$cc_type" in
3435         gcc|llvm_gcc|clang)
3436             add_cppflags --sysroot="$sysroot"
3437             add_ldflags --sysroot="$sysroot"
3438         ;;
3439         tms470)
3440             add_cppflags -I"$sysinclude"
3441             add_ldflags  --sysroot="$sysroot"
3442         ;;
3443     esac
3444 fi
3445
3446 if test "$cpu" = host; then
3447     enabled cross_compile &&
3448         die "--cpu=host makes no sense when cross-compiling."
3449
3450     case "$cc_type" in
3451         gcc|llvm_gcc)
3452             check_native(){
3453                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3454                 sed -n "/cc1.*$1=/{
3455                             s/.*$1=\\([^ ]*\\).*/\\1/
3456                             p
3457                             q
3458                         }" $TMPE
3459             }
3460             cpu=$(check_native -march || check_native -mcpu)
3461         ;;
3462     esac
3463
3464     test "${cpu:-host}" = host &&
3465         die "--cpu=host not supported with compiler $cc"
3466 fi
3467
3468 # Deal with common $arch aliases
3469 case "$arch" in
3470     aarch64|arm64)
3471         arch="aarch64"
3472     ;;
3473     arm*)
3474         arch="arm"
3475     ;;
3476     mips*|IP*)
3477         case "$arch" in
3478         *el)
3479             add_cppflags -EL
3480             add_ldflags -EL
3481         ;;
3482         *eb)
3483             add_cppflags -EB
3484             add_ldflags -EB
3485         ;;
3486         esac
3487         arch="mips"
3488     ;;
3489     parisc*|hppa*)
3490         arch="parisc"
3491     ;;
3492     "Power Macintosh"|ppc*|powerpc*)
3493         arch="ppc"
3494     ;;
3495     s390|s390x)
3496         arch="s390"
3497     ;;
3498     sh4|sh)
3499         arch="sh4"
3500     ;;
3501     sun4u|sparc*)
3502         arch="sparc"
3503     ;;
3504     tilegx|tile-gx)
3505         arch="tilegx"
3506     ;;
3507     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3508         arch="x86"
3509     ;;
3510 esac
3511
3512 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3513 enable $arch
3514
3515 # Add processor-specific flags
3516 if enabled aarch64; then
3517
3518     case $cpu in
3519         armv*)
3520             cpuflags="-march=$cpu"
3521         ;;
3522         *)
3523             cpuflags="-mcpu=$cpu"
3524         ;;
3525     esac
3526
3527 elif enabled alpha; then
3528
3529     cpuflags="-mcpu=$cpu"
3530
3531 elif enabled arm; then
3532
3533     check_arm_arch() {
3534         check_cpp_condition stddef.h \
3535             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3536             $cpuflags
3537     }
3538
3539     probe_arm_arch() {
3540         if   check_arm_arch 4;        then echo armv4
3541         elif check_arm_arch 4T;       then echo armv4t
3542         elif check_arm_arch 5;        then echo armv5
3543         elif check_arm_arch 5E;       then echo armv5e
3544         elif check_arm_arch 5T;       then echo armv5t
3545         elif check_arm_arch 5TE;      then echo armv5te
3546         elif check_arm_arch 5TEJ;     then echo armv5te
3547         elif check_arm_arch 6;        then echo armv6
3548         elif check_arm_arch 6J;       then echo armv6j
3549         elif check_arm_arch 6K;       then echo armv6k
3550         elif check_arm_arch 6Z;       then echo armv6z
3551         elif check_arm_arch 6ZK;      then echo armv6zk
3552         elif check_arm_arch 6T2;      then echo armv6t2
3553         elif check_arm_arch 7;        then echo armv7
3554         elif check_arm_arch 7A  7_A;  then echo armv7-a
3555         elif check_arm_arch 7S;       then echo armv7-a
3556         elif check_arm_arch 7R  7_R;  then echo armv7-r
3557         elif check_arm_arch 7M  7_M;  then echo armv7-m
3558         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3559         elif check_arm_arch 8A  8_A;  then echo armv8-a
3560         fi
3561     }
3562
3563     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3564
3565     case $cpu in
3566         armv*)
3567             cpuflags="-march=$cpu"
3568             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3569         ;;
3570         *)
3571             cpuflags="-mcpu=$cpu"
3572             case $cpu in
3573                 cortex-a*)                               subarch=armv7a  ;;
3574                 cortex-r*)                               subarch=armv7r  ;;
3575                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3576                 arm11*)                                  subarch=armv6   ;;
3577                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3578                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3579                 *)                             subarch=$(probe_arm_arch) ;;
3580             esac
3581         ;;
3582     esac
3583
3584     case "$subarch" in
3585         armv5t*)    enable fast_clz                ;;
3586         armv[6-8]*) enable fast_clz fast_unaligned ;;
3587     esac
3588
3589 elif enabled avr32; then
3590
3591     case $cpu in
3592         ap7[02]0[0-2])
3593             subarch="avr32_ap"
3594             cpuflags="-mpart=$cpu"
3595         ;;
3596         ap)
3597             subarch="avr32_ap"
3598             cpuflags="-march=$cpu"
3599         ;;
3600         uc3[ab]*)
3601             subarch="avr32_uc"
3602             cpuflags="-mcpu=$cpu"
3603         ;;
3604         uc)
3605             subarch="avr32_uc"
3606             cpuflags="-march=$cpu"
3607         ;;
3608     esac
3609
3610 elif enabled bfin; then
3611
3612     cpuflags="-mcpu=$cpu"
3613
3614 elif enabled mips; then
3615
3616     cpuflags="-march=$cpu"
3617
3618 elif enabled ppc; then
3619
3620     disable ldbrx
3621
3622     case $(tolower $cpu) in
3623         601|ppc601|powerpc601)
3624             cpuflags="-mcpu=601"
3625             disable altivec
3626         ;;
3627         603*|ppc603*|powerpc603*)
3628             cpuflags="-mcpu=603"
3629             disable altivec
3630         ;;
3631         604*|ppc604*|powerpc604*)
3632             cpuflags="-mcpu=604"
3633             disable altivec
3634         ;;
3635         g3|75*|ppc75*|powerpc75*)
3636             cpuflags="-mcpu=750"
3637             disable altivec
3638         ;;
3639         g4|745*|ppc745*|powerpc745*)
3640             cpuflags="-mcpu=7450"
3641             disable vsx
3642         ;;
3643         74*|ppc74*|powerpc74*)
3644             cpuflags="-mcpu=7400"
3645             disable vsx
3646         ;;
3647         g5|970|ppc970|powerpc970)
3648             cpuflags="-mcpu=970"
3649             disable vsx
3650         ;;
3651         power[3-6]*)
3652             cpuflags="-mcpu=$cpu"
3653             disable vsx
3654         ;;
3655         power[7-8]*)
3656             cpuflags="-mcpu=$cpu"
3657             enable ldbrx
3658         ;;
3659         cell)
3660             cpuflags="-mcpu=cell"
3661             enable ldbrx
3662             disable vsx
3663         ;;
3664         e500mc)
3665             cpuflags="-mcpu=e500mc"
3666             disable altivec
3667         ;;
3668         e500v2)
3669             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3670             disable altivec
3671             disable dcbzl
3672         ;;
3673         e500)
3674             cpuflags="-mcpu=8540 -mhard-float"
3675             disable altivec
3676             disable dcbzl
3677         ;;
3678     esac
3679
3680 elif enabled sparc; then
3681
3682     case $cpu in
3683         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3684             cpuflags="-mcpu=$cpu"
3685         ;;
3686         ultrasparc*|niagara[234])
3687             cpuflags="-mcpu=$cpu"
3688         ;;
3689     esac
3690
3691 elif enabled x86; then
3692
3693     case $cpu in
3694         i[345]86|pentium)
3695             cpuflags="-march=$cpu"
3696             disable i686
3697             disable mmx
3698         ;;
3699         # targets that do NOT support nopl and conditional mov (cmov)
3700         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3701             cpuflags="-march=$cpu"
3702             disable i686
3703         ;;
3704         # targets that do support nopl and conditional mov (cmov)
3705         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3706             cpuflags="-march=$cpu"
3707             enable i686
3708             enable fast_cmov
3709         ;;
3710         # targets that do support conditional mov but on which it's slow
3711         pentium4|pentium4m|prescott|nocona)
3712             cpuflags="-march=$cpu"
3713             enable i686
3714             disable fast_cmov
3715         ;;
3716     esac
3717
3718 fi
3719
3720 if [ "$cpu" != generic ]; then
3721     add_cflags  $cpuflags
3722     add_asflags $cpuflags
3723     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3724 fi
3725
3726 # compiler sanity check
3727 check_exec <<EOF
3728 int main(void){ return 0; }
3729 EOF
3730 if test "$?" != 0; then
3731     echo "$cc is unable to create an executable file."
3732     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3733         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3734         echo "Only do this if you know what cross compiling means."
3735     fi
3736     die "C compiler test failed."
3737 fi
3738
3739 add_cppflags -D_ISOC99_SOURCE
3740
3741 # some compilers silently accept -std=c11, so we also need to check that the
3742 # version macro is defined properly
3743 if test_cflags_cpp -std=c11 "__STDC_VERSION__ >= 201112L"; then
3744     add_cflags -std=c11
3745 else
3746     check_cflags -std=c99
3747 fi
3748
3749 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3750 #include <stdlib.h>
3751 EOF
3752 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3753 #include <stdlib.h>
3754 EOF
3755
3756 add_host_cppflags -D_ISOC99_SOURCE
3757 check_host_cflags -std=c99
3758 check_host_cflags -Wall
3759 check_host_cflags -O3
3760
3761 check_64bit(){
3762     arch32=$1
3763     arch64=$2
3764     expr=$3
3765     check_code cc "" "int test[2*($expr) - 1]" &&
3766         subarch=$arch64 || subarch=$arch32
3767 }
3768
3769 case "$arch" in
3770     aarch64|alpha|ia64)
3771         spic=$shared
3772     ;;
3773     mips)
3774         check_64bit mips mips64 '_MIPS_SIM > 1'
3775         spic=$shared
3776     ;;
3777     parisc)
3778         check_64bit parisc parisc64 'sizeof(void *) > 4'
3779         spic=$shared
3780     ;;
3781     ppc)
3782         check_64bit ppc ppc64 'sizeof(void *) > 4'
3783         spic=$shared
3784     ;;
3785     s390)
3786         check_64bit s390 s390x 'sizeof(void *) > 4'
3787         spic=$shared
3788     ;;
3789     sparc)
3790         check_64bit sparc sparc64 'sizeof(void *) > 4'
3791         spic=$shared
3792     ;;
3793     x86)
3794         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3795         if test "$subarch" = "x86_64"; then
3796             spic=$shared
3797         fi
3798     ;;
3799 esac
3800
3801 enable $subarch
3802 enabled spic && enable_weak pic
3803
3804 # OS specific
3805 case $target_os in
3806     aix)
3807         SHFLAGS=-shared
3808         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3809         enabled shared && add_ldflags -Wl,-brtl
3810         ;;
3811     android)
3812         disable symver
3813         enable section_data_rel_ro
3814         SLIB_INSTALL_NAME='$(SLIBNAME)'
3815         SLIB_INSTALL_LINKS=
3816         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3817         ;;
3818     haiku)
3819         prefix_default="/boot/common"
3820         network_extralibs="-lnetwork"
3821         host_extralibs=
3822         ;;
3823     sunos)
3824         SHFLAGS='-shared -Wl,-h,$$(@F)'
3825         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3826         network_extralibs="-lsocket -lnsl"
3827         # When using suncc to build, the Solaris linker will mark
3828         # an executable with each instruction set encountered by
3829         # the Solaris assembler.  As our libraries contain their own
3830         # guards for processor-specific code, instead suppress
3831         # generation of the HWCAPS ELF section on Solaris x86 only.
3832         enabled_all suncc x86 &&
3833             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3834             add_ldflags -Wl,-M,mapfile
3835         nm_default='nm -P -g'
3836         version_script='-M'
3837         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3838         ;;
3839     netbsd)
3840         disable symver
3841         oss_indev_extralibs="-lossaudio"
3842         oss_outdev_extralibs="-lossaudio"
3843         ;;
3844     openbsd|bitrig)
3845         disable symver
3846         SHFLAGS='-shared'
3847         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3848         SLIB_INSTALL_LINKS=
3849         oss_indev_extralibs="-lossaudio"
3850         oss_outdev_extralibs="-lossaudio"
3851         ;;
3852     dragonfly)
3853         disable symver
3854         ;;
3855     freebsd)
3856         ;;
3857     bsd/os)
3858         add_extralibs -lpoll -lgnugetopt
3859         ;;
3860     darwin)
3861         enabled ppc && add_asflags -force_cpusubtype_ALL
3862         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3863         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3864         add_ldflags -Wl,-dynamic,-search_paths_first
3865         SLIBSUF=".dylib"
3866         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3867         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3868         objformat="macho"
3869         enabled x86_64 && objformat="macho64"
3870         enabled_any pic shared ||
3871             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3872         check_header dispatch/dispatch.h &&
3873             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3874         ;;
3875     msys*)
3876         die "Native MSYS builds are discouraged, please use the MINGW environment."
3877         ;;
3878     mingw32*|mingw64*)
3879         if test $target_os = "mingw32ce"; then
3880             disable network
3881         else
3882             target_os=mingw32
3883         fi
3884         LIBTARGET=i386
3885         if enabled x86_64; then
3886             LIBTARGET="i386:x86-64"
3887         elif enabled arm; then
3888             LIBTARGET=arm-wince
3889         fi
3890         check_ldflags -Wl,--nxcompat
3891         check_ldflags -Wl,--dynamicbase
3892         shlibdir_default="$bindir_default"
3893         SLIBPREF=""
3894         SLIBSUF=".dll"
3895         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3896         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3897         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3898         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3899         SLIB_INSTALL_LINKS=
3900         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3901         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3902         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3903         objformat="win32"
3904         dlltool="${cross_prefix}dlltool"
3905         ranlib=:
3906         enable dos_paths
3907         ;;
3908     win32|win64)
3909         disable symver
3910         if enabled shared; then
3911             # Link to the import library instead of the normal static library
3912             # for shared libs.
3913             LD_LIB='%.lib'
3914             # Cannot build both shared and static libs with MSVC or icl.
3915             disable static
3916         fi
3917         shlibdir_default="$bindir_default"
3918         SLIBPREF=""
3919         SLIBSUF=".dll"
3920         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3921         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3922         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3923         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3924         SLIB_INSTALL_LINKS=
3925         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3926         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3927         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3928         objformat="win32"
3929         ranlib=:
3930         enable dos_paths
3931         ;;
3932     cygwin*)
3933         target_os=cygwin
3934         shlibdir_default="$bindir_default"
3935         SLIBPREF="cyg"
3936         SLIBSUF=".dll"
3937         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3938         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3939         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3940         SLIB_INSTALL_LINKS=
3941         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
3942         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
3943         objformat="win32"
3944         enable dos_paths
3945         ;;
3946     *-dos|freedos|opendos)
3947         network_extralibs="-lsocket"
3948         objformat="coff"
3949         enable dos_paths
3950         add_cppflags -U__STRICT_ANSI__
3951         ;;
3952     linux)
3953         enable dv1394
3954         enable section_data_rel_ro
3955         ;;
3956     irix*)
3957         target_os=irix
3958         ranlib="echo ignoring ranlib"
3959         ;;
3960     os/2*)
3961         ln_s="cp -f"
3962         objformat="aout"
3963         add_cppflags -D_GNU_SOURCE
3964         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3965         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3966         LIBSUF="_s.a"
3967         SLIBPREF=""
3968         SLIBSUF=".dll"
3969         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3970         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3971         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3972             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3973             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3974             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3975             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3976         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3977             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3978         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3979         enable dos_paths
3980         ;;
3981     gnu/kfreebsd)
3982         add_cppflags -D_BSD_SOURCE
3983         ;;
3984     gnu)
3985         ;;
3986     qnx)
3987         add_cppflags -D_QNX_SOURCE
3988         network_extralibs="-lsocket"
3989         ;;
3990     symbian)
3991         SLIBSUF=".dll"
3992         enable dos_paths
3993         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3994         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3995         add_ldflags -Wl,--target1-abs,--no-undefined \
3996                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3997                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3998         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3999                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4000                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4001         ;;
4002     osf1)
4003         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4004         ;;
4005     minix)
4006         ;;
4007     none)
4008         ;;
4009     *)
4010         die "Unknown OS '$target_os'."
4011         ;;
4012 esac
4013
4014 # determine libc flavour
4015
4016 probe_libc(){
4017     pfx=$1
4018     pfx_no_=${pfx%_}
4019     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4020     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4021         eval ${pfx}libc_type=uclibc
4022         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4023     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4024         eval ${pfx}libc_type=glibc
4025         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4026     # MinGW headers can be installed on Cygwin, so check for newlib first.
4027     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4028         eval ${pfx}libc_type=newlib
4029         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4030     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4031     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4032         eval ${pfx}libc_type=mingw64
4033         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4034         eval test \$${pfx_no_}cc_type = "gcc" &&
4035             add_${pfx}cppflags -D__printf__=__gnu_printf__
4036     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4037          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4038         eval ${pfx}libc_type=mingw32
4039         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4040             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4041             die "ERROR: MinGW32 runtime version must be >= 3.15."
4042         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4043         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
4044             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4045         eval test \$${pfx_no_}cc_type = "gcc" &&
4046             add_${pfx}cppflags -D__printf__=__gnu_printf__
4047     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4048         eval ${pfx}libc_type=msvcrt
4049         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4050             if [ "$pfx" = host_ ]; then
4051                 add_host_cppflags -Dsnprintf=_snprintf
4052             else
4053                 add_compat strtod.o strtod=avpriv_strtod
4054                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4055                                              _snprintf=avpriv_snprintf  \
4056                                              vsnprintf=avpriv_vsnprintf
4057             fi
4058         fi
4059         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4060         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4061         # 0x601 by default unless something else is set by the user.
4062         # This can easily lead to us detecting functions only present
4063         # in such new versions and producing binaries requiring windows 7.0.
4064         # Therefore explicitly set the default to XP unless the user has
4065         # set something else on the command line.
4066         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4067         # family. For these cases, configure is free to use any functions
4068         # found in the SDK headers by default. (Alternatively, we could force
4069         # _WIN32_WINNT to 0x0602 in that case.)
4070         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4071             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4072 #ifdef WINAPI_FAMILY
4073 #include <winapifamily.h>
4074 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4075 #error not desktop
4076 #endif
4077 #endif
4078 EOF
4079         if [ "$pfx" = "" ]; then
4080             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4081         fi
4082     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4083         eval ${pfx}libc_type=klibc
4084     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4085         eval ${pfx}libc_type=bionic
4086     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4087         eval ${pfx}libc_type=solaris
4088         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4089     else
4090         eval ${pfx}libc_type=default
4091         add_${pfx}cppflags -D_DEFAULT_SOURCE
4092     fi
4093 }
4094
4095 probe_libc
4096 test -n "$libc_type" && enable libc_$libc_type
4097 probe_libc host_
4098 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4099
4100 case $libc_type in
4101     bionic)
4102         add_compat strtod.o strtod=avpriv_strtod
4103         ;;
4104 esac
4105
4106 # hacks for compiler/libc/os combinations
4107
4108 if enabled_all tms470 libc_glibc; then
4109     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4110     add_cppflags -D__USER_LABEL_PREFIX__=
4111     add_cppflags -D__builtin_memset=memset
4112     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4113     add_cflags   -pds=48    # incompatible redefinition of macro
4114 fi
4115
4116 if enabled_all ccc libc_glibc; then
4117     add_ldflags -Wl,-z,now  # calls to libots crash without this
4118 fi
4119
4120 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4121     add_cppflags '-I\$(SRC_PATH)/compat/float'
4122
4123 esc(){
4124     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4125 }
4126
4127 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" > avbuild/config.fate
4128
4129 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4130
4131 set_default $PATHS_LIST
4132 set_default nm
4133
4134 # we need to build at least one lib type
4135 if ! enabled_any static shared; then
4136     cat <<EOF
4137 At least one library type must be built.
4138 Specify --enable-static to build the static libraries or --enable-shared to
4139 build the shared libraries as well. To only build the shared libraries specify
4140 --disable-static in addition to --enable-shared.
4141 EOF
4142     exit 1
4143 fi
4144
4145 disabled optimizations || check_cflags -fomit-frame-pointer
4146
4147 enable_weak_pic() {
4148     disabled pic && return
4149     enable pic
4150     add_cppflags -DPIC
4151     case "$target_os" in
4152     mingw*|cygwin*)
4153         ;;
4154     *)
4155         add_cflags -fPIC
4156         ;;
4157     esac
4158     add_asflags  -fPIC
4159 }
4160
4161 enabled pic && enable_weak_pic
4162
4163 check_cc <<EOF || die "Symbol mangling check failed."
4164 int ff_extern;
4165 EOF
4166 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4167 extern_prefix=${sym%%ff_extern*}
4168
4169 check_cc <<EOF && enable_weak inline_asm
4170 void foo(void) { __asm__ volatile ("" ::); }
4171 EOF
4172
4173 _restrict=
4174 for restrict_keyword in restrict __restrict__ __restrict; do
4175     check_cc <<EOF && _restrict=$restrict_keyword && break
4176 void foo(char * $restrict_keyword p);
4177 EOF
4178 done
4179
4180 check_cc <<EOF && enable pragma_deprecated
4181 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4182 EOF
4183
4184 check_cc <<EOF && enable attribute_packed
4185 struct { int x; } __attribute__((packed)) x;
4186 EOF
4187
4188 check_cc <<EOF && enable attribute_may_alias
4189 union { int x; } __attribute__((may_alias)) x;
4190 EOF
4191
4192 check_cc <<EOF || die "endian test failed"
4193 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4194 EOF
4195 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4196
4197 check_gas() {
4198     log "check_gas using '$as' as AS"
4199     # :vararg is used on aarch64, arm and ppc altivec
4200     check_as <<EOF || return 1
4201 .macro m n, y:vararg=0
4202 \n: .int \y
4203 .endm
4204 m x
4205 EOF
4206     # .altmacro is only used in arm asm
4207     ! enabled arm || check_as <<EOF || return 1
4208 .altmacro
4209 EOF
4210     enable gnu_as
4211     return 0
4212 }
4213
4214 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4215     nogas=:
4216     enabled_any arm aarch64 && nogas=die
4217     enabled_all ppc altivec && nogas=warn
4218     as_noop=-v
4219
4220     case $as_type in
4221         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4222         gcc)  gaspp_as_type=gas ;;
4223         *)    gaspp_as_type=$as_type ;;
4224     esac
4225
4226     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4227
4228     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4229         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4230
4231     if ! check_gas ; then
4232         as=${gas:=$as}
4233         check_gas || \
4234             $nogas "GNU assembler not found, install/update gas-preprocessor"
4235     fi
4236
4237     check_as <<EOF && enable as_func
4238 .func test
4239 .endfunc
4240 EOF
4241 fi
4242
4243 check_inline_asm inline_asm_labels '"1:\n"'
4244
4245 if enabled aarch64; then
4246     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4247     # internal assembler in clang 3.3 does not support this instruction
4248     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4249     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4250
4251     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4252
4253 elif enabled alpha; then
4254
4255     check_cflags -mieee
4256
4257 elif enabled arm; then
4258
4259     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4260     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4261     enabled thumb && check_cflags -mthumb || check_cflags -marm
4262
4263     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4264         enable vfp_args
4265     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4266         enable vfp_args
4267     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4268         case "${cross_prefix:-$cc}" in
4269             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4270             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4271 __asm__ (".eabi_attribute 28, 1");
4272 int main(void) { return 0; }
4273 EOF
4274         esac
4275         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4276     fi
4277
4278     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4279     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4280     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4281     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4282     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4283     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4284
4285     [ $target_os = linux ] || [ $target_os = android ] ||
4286         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4287             $ARCH_EXT_LIST_ARM
4288
4289     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4290
4291     check_as <<EOF && enable as_dn_directive
4292 ra .dn d0.i16
4293 .unreq ra
4294 EOF
4295     check_as <<EOF && enable as_fpu_directive
4296 .fpu neon
4297 EOF
4298
4299     # llvm's integrated assembler supports .object_arch from llvm 3.5
4300     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4301 .object_arch armv4
4302 EOF
4303
4304     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4305
4306 elif enabled mips; then
4307
4308     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4309
4310     # make sure that only an instruction set is enabled
4311     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4312
4313     if enabled mips64; then
4314         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4315             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4316                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4317     else
4318         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4319             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4320                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4321     fi
4322
4323 elif enabled parisc; then
4324
4325     if enabled gcc; then
4326         case $($cc -dumpversion) in
4327             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4328         esac
4329     fi
4330
4331 elif enabled ppc; then
4332
4333     enable local_aligned_8 local_aligned_16 local_aligned_32
4334
4335     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4336     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4337     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4338     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4339
4340     # AltiVec flags: The FSF version of GCC differs from the Apple version
4341     if enabled altivec; then
4342         check_cflags -maltivec -mabi=altivec &&
4343         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4344         check_cflags -faltivec
4345
4346         # check if our compiler supports Motorola AltiVec C API
4347         check_cc <<EOF || disable altivec
4348 $inc_altivec_h
4349 int main(void) {
4350     vector signed int v1 = (vector signed int) { 0 };
4351     vector signed int v2 = (vector signed int) { 1 };
4352     v1 = vec_add(v1, v2);
4353     return 0;
4354 }
4355 EOF
4356
4357         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4358     fi
4359
4360     if enabled vsx; then
4361         check_cflags -mvsx &&
4362         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4363     fi
4364
4365     if enabled power8; then
4366         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4367     fi
4368
4369 elif enabled x86; then
4370
4371     check_builtin rdtsc    intrin.h   "__rdtsc()"
4372     check_builtin mm_empty mmintrin.h "_mm_empty()"
4373
4374     enable local_aligned_8 local_aligned_16 local_aligned_32
4375
4376     # check whether EBP is available on x86
4377     # As 'i' is stored on the stack, this program will crash
4378     # if the base pointer is used to access it because the
4379     # base pointer is cleared in the inline assembly code.
4380     check_exec_crash <<EOF && enable ebp_available
4381 volatile int i=0;
4382 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4383 return i;
4384 EOF
4385
4386     # check whether EBX is available on x86
4387     check_inline_asm ebx_available '""::"b"(0)' &&
4388         check_inline_asm ebx_available '"":::"%ebx"'
4389
4390     # check whether xmm clobbers are supported
4391     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4392
4393     # check whether binutils is new enough to compile SSSE3/MMXEXT
4394     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4395     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4396
4397     if ! disabled_any asm mmx yasm; then
4398         if check_cmd $yasmexe --version; then
4399             enabled x86_64 && yasm_extra="-m amd64"
4400             yasm_debug="-g dwarf2"
4401         elif check_cmd nasm -v; then
4402             yasmexe=nasm
4403             yasm_debug="-g -F dwarf"
4404             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4405         fi
4406
4407         YASMFLAGS="-f $objformat $yasm_extra"
4408         enabled pic               && append YASMFLAGS "-DPIC"
4409         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4410         case "$objformat" in
4411             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4412         esac
4413
4414         check_yasm "movbe ecx, [5]" && enable yasm ||
4415             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4416         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4417         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4418         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4419         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4420         check_yasm "CPU amdnop" || disable cpunop
4421     fi
4422
4423     case "$cpu" in
4424         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4425             disable fast_clz
4426         ;;
4427     esac
4428
4429 fi
4430
4431 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4432
4433 check_ldflags -Wl,--as-needed
4434
4435 if check_func dlopen; then
4436     ldl=
4437 elif check_func dlopen -ldl; then
4438     ldl=-ldl
4439 fi
4440
4441 if ! disabled network; then
4442     check_func getaddrinfo $network_extralibs
4443     check_func inet_aton $network_extralibs
4444
4445     check_type netdb.h "struct addrinfo"
4446     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4447     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4448     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4449     check_type poll.h "struct pollfd"
4450     check_type netinet/sctp.h "struct sctp_event_subscribe"
4451     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4452     check_type netinet/in.h "struct sockaddr_in6"
4453     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4454     check_type "sys/types.h sys/socket.h" socklen_t
4455
4456     # Prefer arpa/inet.h over winsock2
4457     if check_header arpa/inet.h ; then
4458         check_func closesocket
4459     elif check_header winsock2.h ; then
4460         check_func_headers winsock2.h closesocket -lws2 &&
4461             network_extralibs="-lws2" ||
4462         { check_func_headers winsock2.h closesocket -lws2_32 &&
4463             network_extralibs="-lws2_32"; } || disable winsock2_h network
4464         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4465
4466         check_type ws2tcpip.h socklen_t
4467         check_type ws2tcpip.h "struct addrinfo"
4468         check_type ws2tcpip.h "struct group_source_req"
4469         check_type ws2tcpip.h "struct ip_mreq_source"
4470         check_type ws2tcpip.h "struct ipv6_mreq"
4471         check_type winsock2.h "struct pollfd"
4472         check_struct winsock2.h "struct sockaddr" sa_len
4473         check_type ws2tcpip.h "struct sockaddr_in6"
4474         check_type ws2tcpip.h "struct sockaddr_storage"
4475     else
4476         disable network
4477     fi
4478 fi
4479
4480 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4481 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4482 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4483 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4484
4485 case "$custom_allocator" in
4486     jemalloc)
4487         # jemalloc by default does not use a prefix
4488         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4489     ;;
4490     tcmalloc)
4491         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
4492         malloc_prefix=tc_
4493     ;;
4494 esac
4495
4496 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4497 check_func  ${malloc_prefix}memalign            && enable memalign
4498 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4499
4500 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4501     check_func_headers time.h clock_gettime ||
4502         { check_lib clock_gettime time.h clock_gettime -lrt && LIBRT="-lrt"; }
4503
4504 check_func  fcntl
4505 check_func  fork
4506 check_func  gethrtime
4507 check_func  getopt
4508 check_func  getrusage
4509 check_func  gettimeofday
4510 check_func  gmtime_r
4511 check_func  isatty
4512 check_func  localtime_r
4513 check_func  mach_absolute_time
4514 check_func  mkstemp
4515 check_func  mmap
4516 check_func  mprotect
4517 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4518 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
4519 check_func  sched_getaffinity
4520 check_func  setrlimit
4521 check_func  strerror_r
4522 check_func  sysconf
4523 check_func  sysctl
4524 check_func  usleep
4525
4526 check_func_headers io.h setmode
4527 check_func_headers stdlib.h getenv
4528
4529 check_func_headers windows.h GetProcessAffinityMask
4530 check_func_headers windows.h GetProcessTimes
4531 check_func_headers windows.h GetSystemTimeAsFileTime
4532 check_func_headers windows.h LoadLibrary
4533 check_func_headers windows.h MapViewOfFile
4534 check_func_headers windows.h SetConsoleTextAttribute
4535 check_func_headers windows.h Sleep
4536 check_func_headers windows.h VirtualAlloc
4537 check_struct windows.h "CONDITION_VARIABLE" Ptr
4538
4539 check_header d3d11.h
4540 check_header direct.h
4541 check_header dlfcn.h
4542 check_header dxva.h
4543 check_header dxva2api.h
4544 check_header io.h
4545 check_header mach/mach_time.h
4546 check_header malloc.h
4547 check_header poll.h
4548 check_header sys/mman.h
4549 check_header sys/param.h
4550 check_header sys/resource.h
4551 check_header sys/select.h
4552 check_header sys/time.h
4553 check_header sys/un.h
4554 check_header unistd.h
4555 check_header valgrind/valgrind.h
4556 check_header VideoDecodeAcceleration/VDADecoder.h
4557 check_header windows.h
4558 check_header X11/extensions/XvMClib.h
4559
4560 # it seems there are versions of clang in some distros that try to use the
4561 # gcc headers, which explodes for stdatomic
4562 # so we also check that atomics actually work here
4563 check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4564
4565 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4566 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4567 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4568
4569 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4570
4571 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4572 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4573 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4574
4575 check_type "va/va.h va/va_dec_hevc.h" "VAPictureParameterBufferHEVC"
4576 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4577 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4578 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4579 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4580 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4581
4582 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4583
4584 if ! disabled w32threads && ! enabled pthreads; then
4585     check_lib w32threads "windows.h process.h" _beginthreadex
4586 fi
4587
4588 # check for some common methods of building with pthread support
4589 # do this before the optional library checks as some of them require pthreads
4590 if ! disabled pthreads && ! enabled w32threads; then
4591     if check_lib pthreads pthread.h pthread_join -pthread; then
4592         add_cflags -pthread
4593     elif check_lib pthreads pthread.h pthread_join -pthreads; then
4594         add_cflags -pthreads
4595     elif check_lib pthreads pthread.h pthread_join -lpthreadGC2; then
4596         :
4597     elif check_lib pthreads pthread.h pthread_join -lpthread; then
4598         :
4599     elif check_func pthread_join; then
4600         enable pthreads
4601     fi
4602 fi
4603
4604 enabled pthreads &&
4605     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
4606
4607 disabled  zlib || check_lib  zlib  zlib.h      zlibVersion -lz
4608 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion -lbz2
4609
4610 check_lib libm math.h sin -lm && LIBM="-lm"
4611
4612 atan2f_args=2
4613 ldexpf_args=2
4614 powf_args=2
4615
4616 for func in $MATH_FUNCS; do
4617     eval check_mathfunc $func \${${func}_args:-1} $LIBM
4618 done
4619
4620 # these are off by default, so fail if requested and not available
4621 enabled avisynth          && { check_header avisynth/avisynth_c.h || die "ERROR: avisynth/avisynth_c.h header not found"; }
4622 enabled avxsynth          && require avxsynth "avxsynth/avxsynth_c.h dlfcn.h" dlopen -ldl
4623 enabled cuda              && require cuda cuda.h cuInit -lcuda
4624 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4625 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4626 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4627 enabled libdc1394         && require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new
4628 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4629 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4630 enabled libfdk_aac        && require_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4631 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4632 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4633 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4634                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
4635                                done || die "ERROR: libgsm not found"; }
4636 enabled libhdcd           && require_pkg_config libhdcd "hdcd/hdcd_simple.h" hdcd_new
4637 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4638 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4639 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
4640 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4641 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4642 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4643 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4644 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4645 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
4646 enabled libopenjpeg       && { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4647                                require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4648 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4649 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4650 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4651 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4652 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
4653 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4654 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4655 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4656 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4657 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4658 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4659 enabled libvpx            && require_pkg_config "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version && {
4660     enabled libvpx_vp8_decoder && {
4661         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
4662             disable libvpx_vp8_decoder;
4663     }
4664     enabled libvpx_vp8_encoder && {
4665         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
4666             disable libvpx_vp8_encoder;
4667     }
4668     enabled libvpx_vp9_decoder && {
4669         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
4670             disable libvpx_vp9_decoder;
4671     }
4672     enabled libvpx_vp9_encoder && {
4673         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
4674             disable libvpx_vp9_encoder;
4675     }
4676     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
4677         die "libvpx enabled but no supported decoders found"
4678     fi
4679 }
4680 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4681 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4682 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4683                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4684                                die "ERROR: libx264 version must be >= 0.118."; } &&
4685                              { check_cpp_condition x264.h "X264_MPEG2" &&
4686                                enable libx262; }
4687 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
4688                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
4689                                die "ERROR: libx265 version must be >= 57."; }
4690 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4691 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4692 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4693                                { ! enabled cross_compile &&
4694                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
4695                                  add_ldflags -L/opt/vc/lib/ &&
4696                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
4697                                die "ERROR: mmal not found" &&
4698                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
4699 enabled omx_rpi           && { check_header OMX_Core.h ||
4700                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
4701                                die "ERROR: OpenMAX IL headers not found"; }
4702 enabled omx               && { check_header OMX_Core.h || die "ERROR: OpenMAX IL headers not found"; }
4703 enabled openssl           && { { check_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
4704                                  check_pkg_config openssl openssl/ssl.h SSL_library_init; } && {
4705                                add_cflags $openssl_cflags && add_extralibs $openssl_extralibs; } ||
4706                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4707                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4708                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4709                                die "ERROR: openssl not found"; }
4710
4711 enabled gnutls            && check_lib gmp gmp.h mpz_export -lgmp
4712
4713 if enabled nvenc; then
4714     check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."
4715     check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6" ||
4716         die "ERROR: NVENC API version 5 or older is not supported"
4717 fi
4718
4719 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4720     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4721     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4722     enable sdl
4723 fi
4724
4725 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man
4726 ! disabled texi2html && check_cmd texi2html -version && enable texi2html || disable texi2html
4727
4728 check_header linux/fb.h
4729 check_header linux/videodev2.h
4730 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4731
4732 check_header AVFoundation/AVFoundation.h
4733
4734 check_header sys/videoio.h
4735
4736 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
4737 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
4738 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4739 # w32api 3.12 had it defined wrong
4740 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4741
4742 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4743 { check_header dev/bktr/ioctl_meteor.h &&
4744   check_header dev/bktr/ioctl_bt848.h; } ||
4745 { check_header machine/ioctl_meteor.h &&
4746   check_header machine/ioctl_bt848.h; } ||
4747 { check_header dev/video/meteor/ioctl_meteor.h &&
4748   check_header dev/video/bktr/ioctl_bt848.h; } ||
4749 check_header dev/ic/bt8xx.h
4750
4751 check_header sys/soundcard.h
4752 check_header soundcard.h
4753
4754 enabled_any alsa_indev alsa_outdev &&
4755     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
4756
4757 enabled jack_indev && check_lib jack jack/jack.h jack_client_open -ljack &&
4758     check_func jack_port_get_latency_range -ljack
4759
4760 enabled_any sndio_indev sndio_outdev && check_lib sndio sndio.h sio_open -lsndio
4761
4762 if enabled libcdio; then
4763     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4764     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4765     die "ERROR: No usable libcdio/cdparanoia found"
4766 fi
4767
4768 if enabled libxcb; then
4769     check_pkg_config xcb-shape xcb/shape.h xcb_shape_rectangles || {
4770         enabled libxcb && die "ERROR: libxcb not found";
4771     } && enable libxcb
4772
4773     disabled libxcb_shm ||
4774         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
4775             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
4776         } && check_header sys/shm.h && enable libxcb_shm
4777
4778     disabled libxcb_xfixes ||
4779         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
4780             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
4781         } && enable libxcb_xfixes
4782
4783     add_cflags "$xcb_shape_cflags $xcb_shm_cflags $xcb_xfixes_cflags"
4784     add_extralibs "$xcb_shape_extralibs $xcb_shm_extralibs $xcb_xfixes_extralibs"
4785 fi
4786
4787 enabled dxva2 &&
4788     check_lib dxva2_lib windows.h CoTaskMemFree -lole32
4789
4790 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4791
4792 enabled vaapi &&
4793     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
4794     disable vaapi
4795
4796 enabled vaapi &&
4797     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
4798
4799 enabled vaapi &&
4800     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
4801
4802 enabled vdpau &&
4803     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4804     disable vdpau
4805
4806 enabled vdpau &&
4807     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
4808
4809 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4810
4811 # add some useful compiler flags if supported
4812 check_cflags -Wdeclaration-after-statement
4813 check_cflags -Wall
4814 check_cflags -Wdisabled-optimization
4815 check_cflags -Wpointer-arith
4816 check_cflags -Wredundant-decls
4817 check_cflags -Wwrite-strings
4818 check_cflags -Wtype-limits
4819 check_cflags -Wundef
4820 check_cflags -Wmissing-prototypes
4821 check_cflags -Wstrict-prototypes
4822
4823 if enabled extra_warnings; then
4824     check_cflags -Wcast-qual
4825     check_cflags -Wextra
4826     check_cflags -Wpedantic
4827 fi
4828
4829 check_disable_warning(){
4830     warning_flag=-W${1#-Wno-}
4831     test_cflags $warning_flag && add_cflags $1
4832 }
4833
4834 check_disable_warning -Wno-parentheses
4835 check_disable_warning -Wno-switch
4836 check_disable_warning -Wno-format-zero-length
4837 check_disable_warning -Wno-pointer-sign
4838
4839 check_disable_warning_headers(){
4840     warning_flag=-W${1#-Wno-}
4841     test_cflags $warning_flag && add_cflags_headers $1
4842 }
4843
4844 check_disable_warning_headers -Wno-deprecated-declarations
4845 check_disable_warning_headers -Wno-unused-variable
4846
4847 check_objcflags -fobjc-arc && enable objc_arc
4848