build: Add name parameter to check_lib() helper function
[libav.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [config.log]
81   --disable-logging        do not log configure debug information
82   --prefix=PREFIX          install in PREFIX [$prefix_default]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --enable-rpath           use rpath when linking programs (USE WITH CARE)
91
92 Licensing options:
93   --enable-gpl             allow use of GPL code, the resulting libs
94                            and binaries will be under GPL [no]
95   --enable-version3        upgrade (L)GPL to version 3 [no]
96   --enable-nonfree         allow use of nonfree code, the resulting libs
97                            and binaries will be unredistributable [no]
98
99 Configuration options:
100   --disable-static         do not build static libraries [no]
101   --enable-shared          build shared libraries [no]
102   --enable-small           optimize for size instead of speed
103   --enable-runtime-cpudetect detect CPU capabilities at runtime (bigger binary)
104   --enable-gray            enable full grayscale support (slower color)
105   --disable-swscale-alpha  disable alpha channel support in swscale
106   --disable-all            disable building components, libraries and programs
107
108 Program options:
109   --disable-programs       do not build command line programs
110   --disable-avconv         disable avconv build
111   --disable-avplay         disable avplay build
112   --disable-avprobe        disable avprobe build
113   --disable-avserver       deprecated, does nothing
114
115 Component options:
116   --disable-doc            do not build documentation
117   --disable-pod2man        do not build manual pages
118   --disable-texi2html      do not build HTML documentation
119   --disable-avdevice       disable libavdevice build
120   --disable-avcodec        disable libavcodec build
121   --disable-avformat       disable libavformat build
122   --disable-avutil         disable libavutil build
123   --disable-swscale        disable libswscale build
124   --disable-avfilter       disable video filter support [no]
125   --disable-avresample     disable libavresample build [no]
126   --disable-pthreads       disable pthreads [auto]
127   --disable-w32threads     disable Win32 threads [auto]
128   --disable-network        disable network support [no]
129   --disable-dct            disable DCT code
130   --disable-error-resilience disable error resilience code
131   --disable-lsp            disable LSP code
132   --disable-lzo            disable LZO decoder code
133   --disable-mdct           disable MDCT code
134   --disable-rdft           disable RDFT code
135   --disable-fft            disable FFT code
136   --disable-faan           disable floating point AAN (I)DCT code
137
138 Individual component options:
139   --disable-everything     disable all components listed below
140   --disable-encoder=NAME   disable encoder NAME
141   --enable-encoder=NAME    enable encoder NAME
142   --disable-encoders       disable all encoders
143   --disable-decoder=NAME   disable decoder NAME
144   --enable-decoder=NAME    enable decoder NAME
145   --disable-decoders       disable all decoders
146   --disable-hwaccel=NAME   disable hwaccel NAME
147   --enable-hwaccel=NAME    enable hwaccel NAME
148   --disable-hwaccels       disable all hwaccels
149   --disable-muxer=NAME     disable muxer NAME
150   --enable-muxer=NAME      enable muxer NAME
151   --disable-muxers         disable all muxers
152   --disable-demuxer=NAME   disable demuxer NAME
153   --enable-demuxer=NAME    enable demuxer NAME
154   --disable-demuxers       disable all demuxers
155   --enable-parser=NAME     enable parser NAME
156   --disable-parser=NAME    disable parser NAME
157   --disable-parsers        disable all parsers
158   --enable-bsf=NAME        enable bitstream filter NAME
159   --disable-bsf=NAME       disable bitstream filter NAME
160   --disable-bsfs           disable all bitstream filters
161   --enable-protocol=NAME   enable protocol NAME
162   --disable-protocol=NAME  disable protocol NAME
163   --disable-protocols      disable all protocols
164   --enable-indev=NAME      enable input device NAME
165   --disable-indev=NAME     disable input device NAME
166   --disable-indevs         disable input devices
167   --enable-outdev=NAME     enable output device NAME
168   --disable-outdev=NAME    disable output device NAME
169   --disable-outdevs        disable output devices
170   --disable-devices        disable all devices
171   --enable-filter=NAME     enable filter NAME
172   --disable-filter=NAME    disable filter NAME
173   --disable-filters        disable all filters
174
175 External library support:
176
177   Using any of the following switches will allow Libav to link to the
178   corresponding external library. All the components depending on that library
179   will become enabled, if all their other dependencies are met and they are not
180   explicitly disabled. E.g. --enable-libwavpack will enable linking to
181   libwavpack and allow the libwavpack encoder to be built, unless it is
182   specifically disabled with --disable-encoder=libwavpack.
183
184   Note that only the system libraries are auto-detected. All the other external
185   libraries must be explicitly enabled.
186
187   Also note that the following help text describes the purpose of the libraries
188   themselves, not all their features will necessarily be usable by Libav.
189
190   --enable-avisynth          video frameserver
191   --enable-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_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2161 hevc_vdpau_hwaccel_select="hevc_decoder"
2162 mpeg1_vdpau_hwaccel_deps="vdpau"
2163 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2164 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2165 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2166 mpeg2_dxva2_hwaccel_deps="dxva2"
2167 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2168 mpeg2_mmal_hwaccel_deps="mmal"
2169 mpeg2_qsv_hwaccel_deps="libmfx"
2170 mpeg2_vaapi_hwaccel_deps="vaapi"
2171 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2172 mpeg2_vdpau_hwaccel_deps="vdpau"
2173 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2174 mpeg4_vaapi_hwaccel_deps="vaapi"
2175 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2176 mpeg4_vdpau_hwaccel_deps="vdpau"
2177 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2178 vc1_d3d11va_hwaccel_deps="d3d11va"
2179 vc1_d3d11va_hwaccel_select="vc1_decoder"
2180 vc1_dxva2_hwaccel_deps="dxva2"
2181 vc1_dxva2_hwaccel_select="vc1_decoder"
2182 vc1_mmal_hwaccel_deps="mmal"
2183 vc1_qsv_hwaccel_deps="libmfx"
2184 vc1_vaapi_hwaccel_deps="vaapi"
2185 vc1_vaapi_hwaccel_select="vc1_decoder"
2186 vc1_vdpau_hwaccel_deps="vdpau"
2187 vc1_vdpau_hwaccel_select="vc1_decoder"
2188 vp8_qsv_hwaccel_deps="libmfx"
2189 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2190 vp8_vaapi_hwaccel_select="vp8_decoder"
2191 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2192 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2193 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2194 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2195
2196 # hardware-accelerated codecs
2197 nvenc_deps_any="dlopen LoadLibrary"
2198 nvenc_extralibs='$ldl'
2199 omx_deps="dlopen pthreads"
2200 omx_extralibs='$ldl'
2201 omx_rpi_select="omx"
2202 qsvdec_select="qsv"
2203 qsvenc_select="qsv"
2204 vaapi_encode_deps="vaapi"
2205
2206 hwupload_cuda_filter_deps="cuda"
2207 scale_npp_filter_deps="cuda libnpp"
2208
2209 h264_mmal_decoder_deps="mmal"
2210 h264_nvenc_encoder_deps="nvenc"
2211 h264_omx_encoder_deps="omx"
2212 h264_qsv_decoder_deps="libmfx"
2213 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2214 h264_qsv_encoder_deps="libmfx"
2215 h264_qsv_encoder_select="qsvenc"
2216 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2217 h264_vaapi_encoder_select="vaapi_encode golomb"
2218 hevc_nvenc_encoder_deps="nvenc"
2219 hevc_qsv_decoder_deps="libmfx"
2220 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2221 hevc_qsv_encoder_deps="libmfx"
2222 hevc_qsv_encoder_select="hevc_ps qsvenc"
2223 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2224 hevc_vaapi_encoder_select="vaapi_encode golomb"
2225 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2226 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2227 mpeg2_mmal_decoder_deps="mmal"
2228 mpeg2_qsv_decoder_deps="libmfx"
2229 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2230 mpeg2_qsv_encoder_deps="libmfx"
2231 mpeg2_qsv_encoder_select="qsvenc"
2232 mpeg4_omx_encoder_deps="omx"
2233 vc1_mmal_decoder_deps="mmal"
2234 vc1_qsv_decoder_deps="libmfx"
2235 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2236 vp8_qsv_decoder_deps="libmfx"
2237 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2238
2239 nvenc_h264_encoder_select="h264_nvenc_encoder"
2240 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2241
2242 # parsers
2243 h264_parser_select="golomb h264dsp h264parse"
2244 hevc_parser_select="hevc_ps"
2245 mpegaudio_parser_select="mpegaudioheader"
2246 mpegvideo_parser_select="mpegvideo"
2247 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2248 vc1_parser_select="vc1dsp"
2249
2250 # bitstream_filters
2251 mjpeg2jpeg_bsf_select="jpegtables"
2252
2253 # external libraries
2254 avisynth_deps="LoadLibrary"
2255 avxsynth_deps="dlopen"
2256 avisynth_demuxer_deps_any="avisynth avxsynth"
2257 avisynth_demuxer_select="riffdec"
2258 libdcadec_decoder_deps="libdcadec"
2259 libfaac_encoder_deps="libfaac"
2260 libfaac_encoder_select="audio_frame_queue"
2261 libfdk_aac_decoder_deps="libfdk_aac"
2262 libfdk_aac_encoder_deps="libfdk_aac"
2263 libfdk_aac_encoder_select="audio_frame_queue"
2264 libgsm_decoder_deps="libgsm"
2265 libgsm_encoder_deps="libgsm"
2266 libgsm_ms_decoder_deps="libgsm"
2267 libgsm_ms_encoder_deps="libgsm"
2268 libilbc_decoder_deps="libilbc"
2269 libilbc_encoder_deps="libilbc"
2270 libkvazaar_encoder_deps="libkvazaar"
2271 libmp3lame_encoder_deps="libmp3lame"
2272 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2273 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2274 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2275 libopencore_amrnb_encoder_select="audio_frame_queue"
2276 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2277 libopenh264_decoder_deps="libopenh264"
2278 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2279 libopenh264_encoder_deps="libopenh264"
2280 libopenjpeg_decoder_deps="libopenjpeg"
2281 libopenjpeg_encoder_deps="libopenjpeg"
2282 libopus_decoder_deps="libopus"
2283 libopus_encoder_deps="libopus"
2284 libopus_encoder_select="audio_frame_queue"
2285 libschroedinger_decoder_deps="libschroedinger"
2286 libschroedinger_encoder_deps="libschroedinger"
2287 libspeex_decoder_deps="libspeex"
2288 libspeex_encoder_deps="libspeex"
2289 libspeex_encoder_select="audio_frame_queue"
2290 libtheora_encoder_deps="libtheora"
2291 libtwolame_encoder_deps="libtwolame"
2292 libvo_aacenc_encoder_deps="libvo_aacenc"
2293 libvo_aacenc_encoder_select="audio_frame_queue"
2294 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2295 libvorbis_encoder_deps="libvorbis"
2296 libvorbis_encoder_select="audio_frame_queue"
2297 libvpx_vp8_decoder_deps="libvpx"
2298 libvpx_vp8_encoder_deps="libvpx"
2299 libvpx_vp9_decoder_deps="libvpx"
2300 libvpx_vp9_encoder_deps="libvpx"
2301 libwavpack_encoder_deps="libwavpack"
2302 libwavpack_encoder_select="audio_frame_queue"
2303 libwebp_encoder_deps="libwebp"
2304 libx262_encoder_deps="libx262"
2305 libx264_encoder_deps="libx264"
2306 libx265_encoder_deps="libx265"
2307 libxavs_encoder_deps="libxavs"
2308 libxvid_encoder_deps="libxvid mkstemp"
2309
2310 # demuxers / muxers
2311 ac3_demuxer_select="ac3_parser"
2312 asf_demuxer_select="riffdec"
2313 asf_muxer_select="riffenc"
2314 asf_stream_muxer_select="asf_muxer"
2315 avi_demuxer_select="iso_media riffdec"
2316 avi_muxer_select="riffenc"
2317 caf_demuxer_select="iso_media riffdec"
2318 dash_muxer_select="mp4_muxer"
2319 dirac_demuxer_select="dirac_parser"
2320 dv_demuxer_select="dvprofile"
2321 dv_muxer_select="dvprofile"
2322 dxa_demuxer_select="riffdec"
2323 eac3_demuxer_select="ac3_parser"
2324 f4v_muxer_select="mov_muxer"
2325 flac_demuxer_select="flac_parser"
2326 hds_muxer_select="flv_muxer"
2327 hls_muxer_select="mpegts_muxer"
2328 ipod_muxer_select="mov_muxer"
2329 ismv_muxer_select="mov_muxer"
2330 matroska_audio_muxer_select="matroska_muxer"
2331 matroska_demuxer_select="iso_media riffdec"
2332 matroska_demuxer_suggest="bzlib lzo zlib"
2333 matroska_muxer_select="iso_media riffenc"
2334 mmf_muxer_select="riffenc"
2335 mov_demuxer_select="iso_media riffdec"
2336 mov_demuxer_suggest="zlib"
2337 mov_muxer_select="iso_media riffenc rtpenc_chain"
2338 mp3_demuxer_select="mpegaudio_parser"
2339 mp3_muxer_select="mpegaudioheader"
2340 mp4_muxer_select="mov_muxer"
2341 mpegts_demuxer_select="iso_media"
2342 mpegts_muxer_select="adts_muxer latm_muxer"
2343 mpegtsraw_demuxer_select="mpegts_demuxer"
2344 mxf_d10_muxer_select="mxf_muxer"
2345 nut_muxer_select="riffenc"
2346 nuv_demuxer_select="riffdec"
2347 oga_muxer_select="ogg_muxer"
2348 ogg_demuxer_select="dirac_parse"
2349 opus_muxer_select="ogg_muxer"
2350 psp_muxer_select="mov_muxer"
2351 rtp_demuxer_select="sdp_demuxer"
2352 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2353 rtsp_demuxer_select="http_protocol rtpdec"
2354 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2355 sap_demuxer_select="sdp_demuxer"
2356 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2357 sdp_demuxer_select="rtpdec"
2358 smoothstreaming_muxer_select="ismv_muxer"
2359 spdif_muxer_select="aac_parser"
2360 spx_muxer_select="ogg_muxer"
2361 swf_demuxer_suggest="zlib"
2362 tak_demuxer_select="tak_parser"
2363 tg2_muxer_select="mov_muxer"
2364 tgp_muxer_select="mov_muxer"
2365 w64_demuxer_select="wav_demuxer"
2366 wav_demuxer_select="riffdec"
2367 wav_muxer_select="riffenc"
2368 webm_muxer_select="iso_media riffenc"
2369 webm_muxer_suggest="libopus_encoder libvorbis_encoder libvpx_vp8_encoder libvpx_vp9_encoder"
2370 wtv_demuxer_select="mpegts_demuxer riffdec"
2371 xmv_demuxer_select="riffdec"
2372 xwma_demuxer_select="riffdec"
2373
2374 # indevs / outdevs
2375 alsa_indev_deps="alsa"
2376 alsa_outdev_deps="alsa"
2377 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2378 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2379 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2380 dv1394_indev_deps="dv1394"
2381 dv1394_indev_select="dv_demuxer"
2382 fbdev_indev_deps="linux_fb_h"
2383 jack_indev_deps="jack"
2384 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2385 libcdio_indev_deps="libcdio"
2386 libdc1394_indev_deps="libdc1394"
2387 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2388 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2389 pulse_indev_deps="libpulse"
2390 sndio_indev_deps="sndio"
2391 sndio_outdev_deps="sndio"
2392 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2393 vfwcap_indev_deps="vfw32 vfwcap_defines"
2394 xcbgrab_indev_deps="libxcb"
2395
2396 # protocols
2397 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2398 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2399 ffrtmpcrypt_protocol_select="tcp_protocol"
2400 ffrtmphttp_protocol_deps="!librtmp_protocol"
2401 ffrtmphttp_protocol_select="http_protocol"
2402 gopher_protocol_select="network"
2403 http_protocol_select="tcp_protocol"
2404 httpproxy_protocol_select="tcp_protocol"
2405 https_protocol_select="tls_protocol"
2406 icecast_protocol_select="http_protocol"
2407 librtmp_protocol_deps="librtmp"
2408 librtmpe_protocol_deps="librtmp"
2409 librtmps_protocol_deps="librtmp"
2410 librtmpt_protocol_deps="librtmp"
2411 librtmpte_protocol_deps="librtmp"
2412 mmsh_protocol_select="http_protocol"
2413 mmst_protocol_select="network"
2414 rtmp_protocol_deps="!librtmp_protocol"
2415 rtmp_protocol_select="tcp_protocol"
2416 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2417 rtmps_protocol_deps="!librtmp_protocol"
2418 rtmps_protocol_select="tls_protocol"
2419 rtmpt_protocol_select="ffrtmphttp_protocol"
2420 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2421 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2422 rtp_protocol_select="udp_protocol"
2423 sctp_protocol_deps="struct_sctp_event_subscribe"
2424 sctp_protocol_select="network"
2425 srtp_protocol_select="rtp_protocol srtp"
2426 tcp_protocol_select="network"
2427 tls_gnutls_protocol_deps="gnutls"
2428 tls_gnutls_protocol_select="tcp_protocol"
2429 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2430 tls_openssl_protocol_select="tcp_protocol"
2431 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2432 udp_protocol_select="network"
2433 unix_protocol_deps="sys_un_h"
2434 unix_protocol_select="network"
2435
2436 # filters
2437 asyncts_filter_deps="avresample"
2438 blackframe_filter_deps="gpl"
2439 boxblur_filter_deps="gpl"
2440 bs2b_filter_deps="libbs2b"
2441 cropdetect_filter_deps="gpl"
2442 deinterlace_qsv_filter_deps="libmfx"
2443 deinterlace_vaapi_filter_deps="vaapi"
2444 delogo_filter_deps="gpl"
2445 drawtext_filter_deps="libfreetype"
2446 frei0r_filter_deps="frei0r dlopen"
2447 frei0r_filter_extralibs='$ldl'
2448 frei0r_src_filter_deps="frei0r dlopen"
2449 frei0r_src_filter_extralibs='$ldl'
2450 hdcd_filter_deps="libhdcd"
2451 hqdn3d_filter_deps="gpl"
2452 interlace_filter_deps="gpl"
2453 movie_filter_deps="avcodec avformat"
2454 ocv_filter_deps="libopencv"
2455 resample_filter_deps="avresample"
2456 scale_filter_deps="swscale"
2457 scale_qsv_filter_deps="libmfx"
2458 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2459
2460 # examples
2461 decode_audio_example_deps="avcodec avutil"
2462 decode_video_example_deps="avcodec avutil"
2463 encode_audio_example_deps="avcodec avutil"
2464 encode_video_example_deps="avcodec avutil"
2465 filter_audio_example_deps="avfilter avutil"
2466 metadata_example_deps="avformat avutil"
2467 output_example_deps="avcodec avformat avresample avutil swscale"
2468 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2469 transcode_aac_example_deps="avcodec avformat avresample"
2470
2471 # libraries, in linking order
2472 avcodec_deps="avutil"
2473 avcodec_select="null_bsf"
2474 avdevice_deps="avformat avcodec avutil"
2475 avfilter_deps="avutil"
2476 avformat_deps="avcodec avutil"
2477 avresample_deps="avutil"
2478 swscale_deps="avutil"
2479
2480 # programs
2481 avconv_deps="avcodec avfilter avformat avresample swscale"
2482 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2483                fps_filter null_filter resample_filter scale_filter
2484                trim_filter"
2485 avplay_deps="avcodec avfilter avformat avresample sdl"
2486 avplay_extralibs='$sdl_extralibs'
2487 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2488 avprobe_deps="avcodec avformat"
2489
2490 # documentation
2491 pod2man_deps="doc"
2492 texi2html_deps="doc"
2493
2494 # default parameters
2495
2496 logfile="config.log"
2497
2498 # installation paths
2499 prefix_default="/usr/local"
2500 bindir_default='${prefix}/bin'
2501 datadir_default='${prefix}/share/avconv'
2502 docdir_default='${prefix}/share/doc/libav'
2503 incdir_default='${prefix}/include'
2504 libdir_default='${prefix}/lib'
2505 mandir_default='${prefix}/share/man'
2506 shlibdir_default="$libdir_default"
2507
2508 # toolchain
2509 ar_default="ar"
2510 cc_default="gcc"
2511 host_cc_default="gcc"
2512 ln_s="ln -s -f"
2513 nm_default="nm -g"
2514 objformat="elf"
2515 pkg_config_default=pkg-config
2516 ranlib="ranlib"
2517 strip="strip"
2518 version_script='--version-script'
2519 yasmexe="yasm"
2520
2521 # machine
2522 arch_default=$(uname -m)
2523 cpu="generic"
2524 intrinsics="none"
2525
2526 # OS
2527 target_os_default=$(tolower $(uname -s))
2528 host_os=$target_os_default
2529
2530 # configurable options
2531 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2532
2533 enable asm
2534 enable debug
2535 enable doc
2536 enable faan faandct faanidct
2537 enable optimizations
2538 enable safe_bitstream_reader
2539 enable static
2540 enable swscale_alpha
2541 enable valgrind_backtrace
2542
2543 # By default, enable only those hwaccels that have no external dependencies.
2544 enable d3d11va dxva2 vda vdpau
2545
2546 # build settings
2547 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2548 LIBPREF="lib"
2549 LIBSUF=".a"
2550 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2551 SLIBPREF="lib"
2552 SLIBSUF=".so"
2553 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2554 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2555 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2556 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2557 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2558 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2559 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2560
2561 asflags_filter=echo
2562 cflags_filter=echo
2563 ldflags_filter=echo
2564
2565 AS_C='-c'
2566 AS_O='-o $@'
2567 CC_C='-c'
2568 CC_E='-E -o $@'
2569 CC_O='-o $@'
2570 OBJCC_C='-c'
2571 OBJCC_E='-E -o $@'
2572 OBJCC_O='-o $@'
2573 LD_O='-o $@'
2574 LD_LIB='-l%'
2575 LD_PATH='-L'
2576 HOSTCC_C='-c'
2577 HOSTCC_E='-E -o $@'
2578 HOSTCC_O='-o $@'
2579 HOSTLD_O='-o $@'
2580
2581 host_extralibs='-lm'
2582 host_cflags_filter=echo
2583 host_ldflags_filter=echo
2584
2585 target_path='$(CURDIR)'
2586
2587 # since the object filename is not given with the -MM flag, the compiler
2588 # is only able to print the basename, and we must add the path ourselves
2589 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2590 DEPFLAGS='-MM'
2591
2592 # find source path
2593 if test -f configure; then
2594     source_path=.
2595 else
2596     source_path=$(cd $(dirname "$0"); pwd)
2597     echo "$source_path" | grep -q '[[:blank:]]' &&
2598         die "Out of tree builds are impossible with whitespace in source path."
2599     test -e "$source_path/config.h" &&
2600         die "Out of tree builds are impossible with config.h in source dir."
2601 fi
2602
2603 for v in "$@"; do
2604     r=${v#*=}
2605     l=${v%"$r"}
2606     r=$(sh_quote "$r")
2607     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2608 done
2609
2610 find_things(){
2611     thing=$1
2612     pattern=$2
2613     file=$source_path/$3
2614     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2615 }
2616
2617 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2618 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2619 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2620 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2621 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2622 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2623 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2624 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2625 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2626
2627 find_things_extern(){
2628     thing=$1
2629     pattern=$2
2630     file=$source_path/$3
2631     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2632 }
2633
2634 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2635 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2636
2637 ALL_COMPONENTS="
2638     $BSF_LIST
2639     $DECODER_LIST
2640     $DEMUXER_LIST
2641     $ENCODER_LIST
2642     $FILTER_LIST
2643     $HWACCEL_LIST
2644     $INDEV_LIST
2645     $MUXER_LIST
2646     $OUTDEV_LIST
2647     $PARSER_LIST
2648     $PROTOCOL_LIST
2649 "
2650
2651 for n in $COMPONENT_LIST; do
2652     v=$(toupper ${n%s})_LIST
2653     eval enable \$$v
2654     eval ${n}_if_any="\$$v"
2655 done
2656
2657 enable $ARCH_EXT_LIST
2658
2659 die_unknown(){
2660     echo "Unknown option \"$1\"."
2661     echo "See $0 --help for available options."
2662     exit 1
2663 }
2664
2665 print_3_columns() {
2666     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2667 }
2668
2669 show_list() {
2670     suffix=_$1
2671     shift
2672     echo $* | sed s/$suffix//g | print_3_columns
2673     exit 0
2674 }
2675
2676 rand_list(){
2677     IFS=', '
2678     set -- $*
2679     unset IFS
2680     for thing; do
2681         comp=${thing%:*}
2682         prob=${thing#$comp}
2683         prob=${prob#:}
2684         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2685         echo "prob ${prob:-0.5}"
2686         printf '%s\n' $comp
2687     done
2688 }
2689
2690 do_random(){
2691     action=$1
2692     shift
2693     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2694     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2695 }
2696
2697 for opt do
2698     optval="${opt#*=}"
2699     case "$opt" in
2700         --extra-ldflags=*)
2701             add_ldflags $optval
2702         ;;
2703         --extra-ldexeflags=*)
2704             add_ldexeflags $optval
2705         ;;
2706         --extra-libs=*)
2707             add_extralibs $optval
2708         ;;
2709         --disable-devices)
2710             disable $INDEV_LIST $OUTDEV_LIST
2711         ;;
2712         --enable-debug=*)
2713             debuglevel="$optval"
2714         ;;
2715         --disable-programs)
2716             disable $PROGRAM_LIST
2717         ;;
2718         --disable-everything)
2719             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2720         ;;
2721         --disable-all)
2722             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2723             disable $LIBRARY_LIST $PROGRAM_LIST doc
2724         ;;
2725         --enable-random|--disable-random)
2726             action=${opt%%-random}
2727             do_random ${action#--} $COMPONENT_LIST
2728         ;;
2729         --enable-random=*|--disable-random=*)
2730             action=${opt%%-random=*}
2731             do_random ${action#--} $optval
2732         ;;
2733         --enable-*=*|--disable-*=*)
2734             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2735             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2736             eval list=\$$(toupper $thing)_LIST
2737             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2738             $action $(filter "$name" $list)
2739         ;;
2740         --enable-avserver|--disable-avserver*)
2741             warn "avserver has been removed, the ${opt} option is only"\
2742                  "provided for compatibility and will be removed in the future"
2743         ;;
2744         --enable-?*|--disable-?*)
2745             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2746             if is_in $option $COMPONENT_LIST; then
2747                 test $action = disable && action=unset
2748                 eval $action \$$(toupper ${option%s})_LIST
2749             elif is_in $option $CMDLINE_SELECT; then
2750                 $action $option
2751             else
2752                 die_unknown $opt
2753             fi
2754         ;;
2755         --list-*)
2756             NAME="${opt#--list-}"
2757             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2758             NAME=${NAME%s}
2759             eval show_list $NAME \$$(toupper $NAME)_LIST
2760         ;;
2761         --help|-h) show_help
2762         ;;
2763         --quiet|-q) quiet=yes
2764         ;;
2765         *)
2766             optname="${opt%%=*}"
2767             optname="${optname#--}"
2768             optname=$(echo "$optname" | sed 's/-/_/g')
2769             if is_in $optname $CMDLINE_SET; then
2770                 eval $optname='$optval'
2771             elif is_in $optname $CMDLINE_APPEND; then
2772                 append $optname "$optval"
2773             else
2774                 die_unknown $opt
2775             fi
2776         ;;
2777     esac
2778 done
2779
2780 for e in $env; do
2781     eval "export $e"
2782 done
2783
2784 disabled logging && logfile=/dev/null
2785
2786 # Die early if licensing-related configure options are incompatible.
2787 die_license_disabled() {
2788     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2789 }
2790
2791 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2792 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2793 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2794
2795 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2796
2797 # Disable all the library-specific components if the library itself
2798 # is disabled, see AVCODEC_LIST and following _LIST variables.
2799
2800 disable_components(){
2801     disabled ${1} && disable $(
2802         eval components="\$$(toupper ${1})_COMPONENTS"
2803         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2804     )
2805 }
2806
2807 map 'disable_components $v' $LIBRARY_LIST
2808
2809 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2810 set >> $logfile
2811
2812 case "$toolchain" in
2813     *-asan)
2814         cc_default="${toolchain%-asan}"
2815         add_cflags  -fsanitize=address
2816         add_ldflags -fsanitize=address
2817     ;;
2818     *-msan)
2819         cc_default="${toolchain%-msan}"
2820         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2821         add_ldflags -fsanitize=memory
2822     ;;
2823     *-tsan)
2824         cc_default="${toolchain%-tsan}"
2825         add_cflags  -fsanitize=thread -fPIE
2826         add_ldflags -fsanitize=thread -pie
2827         case "$toolchain" in
2828             gcc-tsan)
2829                 add_cflags  -fPIC
2830                 add_ldflags -fPIC
2831                 ;;
2832         esac
2833     ;;
2834     *-usan)
2835         cc_default="${toolchain%-usan}"
2836         add_cflags  -fsanitize=undefined
2837         add_ldflags -fsanitize=undefined
2838         case "$toolchain" in
2839             clang-usan)
2840                 add_cflags -O1
2841                 ;;
2842         esac
2843     ;;
2844     valgrind-*)
2845         target_exec_default="valgrind"
2846         case "$toolchain" in
2847             valgrind-massif)
2848                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2849                 ;;
2850             valgrind-memcheck)
2851                 target_exec_args="--track-origins=yes --leak-check=full"
2852                 ;;
2853         esac
2854     ;;
2855     msvc)
2856         # Check whether the current MSVC version needs the C99 converter.
2857         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2858         # support enough of C99 to build libav. Default to the new
2859         # behaviour if the regexp was unable to match anything, since this
2860         # successfully parses the version number of existing supported
2861         # versions that require the converter (MSVC 2010 and 2012).
2862         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2863         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2864             cc_default="cl"
2865         else
2866             cc_default="c99wrap cl"
2867         fi
2868         ld_default="$source_path/compat/windows/mslink"
2869         nm_default="dumpbin -symbols"
2870         ar_default="lib"
2871         case "$arch" in
2872         arm*)
2873             as_default="armasm"
2874             ;;
2875         esac
2876         target_os_default="win32"
2877         # Use a relative path for TMPDIR. This makes sure all the
2878         # ffconf temp files are written with a relative path, avoiding
2879         # issues with msys/win32 path conversion for MSVC parameters
2880         # such as -Fo<file> or -out:<file>.
2881         TMPDIR=.
2882     ;;
2883     icl)
2884         cc_default="icl"
2885         ld_default="xilink"
2886         nm_default="dumpbin -symbols"
2887         ar_default="xilib"
2888         target_os_default="win32"
2889         TMPDIR=.
2890     ;;
2891     gcov)
2892         add_cflags  -fprofile-arcs -ftest-coverage
2893         add_ldflags -fprofile-arcs -ftest-coverage
2894     ;;
2895     llvm-cov)
2896         add_cflags -fprofile-arcs -ftest-coverage
2897         add_ldflags --coverage
2898     ;;
2899     hardened)
2900         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2901         add_cflags   -fno-strict-overflow -fstack-protector-all
2902         add_ldflags  -Wl,-z,relro -Wl,-z,now
2903     ;;
2904     ?*)
2905         die "Unknown toolchain $toolchain"
2906     ;;
2907 esac
2908
2909 test -n "$cross_prefix" && enable cross_compile
2910
2911 if enabled cross_compile; then
2912     test -n "$arch" && test -n "$target_os" ||
2913         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
2914 fi
2915
2916 ar_default="${cross_prefix}${ar_default}"
2917 cc_default="${cross_prefix}${cc_default}"
2918 occ_default="${cross_prefix}${occ_default}"
2919 nm_default="${cross_prefix}${nm_default}"
2920 pkg_config_default="${cross_prefix}${pkg_config_default}"
2921 ranlib="${cross_prefix}${ranlib}"
2922 strip="${cross_prefix}${strip}"
2923
2924 sysinclude_default="${sysroot}/usr/include"
2925
2926 set_default arch cc pkg_config sysinclude target_exec target_os
2927 enabled cross_compile || host_cc_default=$cc
2928 set_default host_cc
2929
2930 if ! $pkg_config --version >/dev/null 2>&1; then
2931     warn "$pkg_config not found, library detection may fail."
2932     pkg_config=false
2933 fi
2934
2935 exesuf() {
2936     case $1 in
2937         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2938     esac
2939 }
2940
2941 EXESUF=$(exesuf $target_os)
2942 HOSTEXESUF=$(exesuf $host_os)
2943
2944 # set temporary file name
2945 : ${TMPDIR:=$TEMPDIR}
2946 : ${TMPDIR:=$TMP}
2947 : ${TMPDIR:=/tmp}
2948
2949 if ! check_cmd mktemp -u XXXXXX; then
2950     # simple replacement for missing mktemp
2951     # NOT SAFE FOR GENERAL USE
2952     mktemp(){
2953         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2954     }
2955 fi
2956
2957 tmpfile(){
2958     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2959         (set -C; exec > $tmp) 2>/dev/null ||
2960         die "Unable to create temporary file in $TMPDIR."
2961     append TMPFILES $tmp
2962     eval $1=$tmp
2963 }
2964
2965 trap 'rm -f -- $TMPFILES' EXIT
2966
2967 tmpfile TMPASM .asm
2968 tmpfile TMPC   .c
2969 tmpfile TMPE   $EXESUF
2970 tmpfile TMPH   .h
2971 tmpfile TMPO   .o
2972 tmpfile TMPS   .S
2973 tmpfile TMPSH  .sh
2974 tmpfile TMPV   .ver
2975
2976 unset -f mktemp
2977
2978 chmod +x $TMPE
2979
2980 # make sure we can execute files in $TMPDIR
2981 cat > $TMPSH 2>> $logfile <<EOF
2982 #! /bin/sh
2983 EOF
2984 chmod +x $TMPSH >> $logfile 2>&1
2985 if ! $TMPSH >> $logfile 2>&1; then
2986     cat <<EOF
2987 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2988 variable to another directory and make sure that it is not mounted noexec.
2989 EOF
2990     die "Sanity test failed."
2991 fi
2992
2993 armasm_flags(){
2994     for flag; do
2995         case $flag in
2996             # Filter out MSVC cl.exe options from cflags that shouldn't
2997             # be passed to gas-preprocessor
2998             -M[TD]*)                                            ;;
2999             *)                  echo $flag                      ;;
3000         esac
3001    done
3002 }
3003
3004 ccc_flags(){
3005     for flag; do
3006         case $flag in
3007             -std=c99)           echo -c99                       ;;
3008             -mcpu=*)            echo -arch ${flag#*=}           ;;
3009             -mieee)             echo -ieee                      ;;
3010             -O*|-fast)          echo $flag                      ;;
3011             -fno-math-errno)    echo -assume nomath_errno       ;;
3012             -g)                 echo -g3                        ;;
3013             -Wall)              echo -msg_enable level2         ;;
3014             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3015             -Wl,*)              echo $flag                      ;;
3016             -f*|-W*)                                            ;;
3017             *)                  echo $flag                      ;;
3018         esac
3019    done
3020 }
3021
3022 cparser_flags(){
3023     for flag; do
3024         case $flag in
3025             -Wno-switch)             echo -Wno-switch-enum ;;
3026             -Wno-format-zero-length) ;;
3027             -Wdisabled-optimization) ;;
3028             -Wno-pointer-sign)       echo -Wno-other ;;
3029             *)                       echo $flag ;;
3030         esac
3031     done
3032 }
3033
3034 msvc_common_flags(){
3035     for flag; do
3036         case $flag in
3037             # In addition to specifying certain flags under the compiler
3038             # specific filters, they must be specified here as well or else the
3039             # generic catch all at the bottom will print the original flag.
3040             -Wall)                ;;
3041             -std=c99)             ;;
3042             # Common flags
3043             -fomit-frame-pointer) ;;
3044             -g)                   echo -Z7 ;;
3045             -fno-math-errno)      ;;
3046             -fno-common)          ;;
3047             -fno-signed-zeros)    ;;
3048             -fPIC)                ;;
3049             -mthumb)              ;;
3050             -march=*)             ;;
3051             -lz)                  echo zlib.lib ;;
3052             -lx264)               echo libx264.lib ;;
3053             -l*)                  echo ${flag#-l}.lib ;;
3054             -L*)                  echo -libpath:${flag#-L} ;;
3055             *)                    echo $flag ;;
3056         esac
3057     done
3058 }
3059
3060 msvc_flags(){
3061     msvc_common_flags "$@"
3062     for flag; do
3063         case $flag in
3064             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3065                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3066                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3067                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3068         esac
3069     done
3070 }
3071
3072 icl_flags(){
3073     msvc_common_flags "$@"
3074     for flag; do
3075         case $flag in
3076             # Despite what Intel's documentation says -Wall, which is supported
3077             # on Windows, does enable remarks so disable them here.
3078             -Wall)                echo $flag -Qdiag-disable:remark ;;
3079             -std=c99)             echo -Qstd=c99 ;;
3080         esac
3081     done
3082 }
3083
3084 pgi_flags(){
3085     for flag; do
3086         case $flag in
3087             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3088             -fomit-frame-pointer) echo -Mnoframe ;;
3089             -g)                   echo -gopt ;;
3090             *)                    echo $flag ;;
3091         esac
3092     done
3093 }
3094
3095 suncc_flags(){
3096     for flag; do
3097         case $flag in
3098             -march=*|-mcpu=*)
3099                 case "${flag#*=}" in
3100                     native)                   echo -xtarget=native       ;;
3101                     v9|niagara)               echo -xarch=sparc          ;;
3102                     ultrasparc)               echo -xarch=sparcvis       ;;
3103                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3104                     i586|pentium)             echo -xchip=pentium        ;;
3105                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3106                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3107                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3108                     pentium4*)          echo -xtarget=pentium4           ;;
3109                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3110                     *-sse3)             echo -xarch=sse3                 ;;
3111                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3112                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3113                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3114                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3115                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3116                     k8|opteron|athlon64|athlon-fx)
3117                                                echo -xarch=sse2a         ;;
3118                     athlon*)                   echo -xarch=pentium_proa  ;;
3119                 esac
3120                 ;;
3121             -std=c99)             echo -xc99              ;;
3122             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3123             -fPIC)                echo -KPIC -xcode=pic32 ;;
3124             -W*,*)                echo $flag              ;;
3125             -f*-*|-W*|-mimpure-text)                      ;;
3126             -shared)              echo -G                 ;;
3127             *)                    echo $flag              ;;
3128         esac
3129     done
3130 }
3131
3132 tms470_flags(){
3133     for flag; do
3134         case $flag in
3135             -march=*|-mcpu=*)
3136                 case "${flag#*=}" in
3137                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3138                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3139                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3140                     armv6*|arm11*)          echo -mv=6   ;;
3141                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3142                                             echo -mv=5e  ;;
3143                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3144                 esac
3145                 ;;
3146             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3147             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3148             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3149             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3150             -msoft-float)   echo --float_support=vfplib       ;;
3151             -O[0-3]|-mf=*)  echo $flag                        ;;
3152             -g)             echo -g -mn                       ;;
3153             -pds=*)         echo $flag                        ;;
3154             -D*|-I*)        echo $flag                        ;;
3155             --gcc|--abi=*)  echo $flag                        ;;
3156             -me)            echo $flag                        ;;
3157         esac
3158     done
3159 }
3160
3161 probe_cc(){
3162     pfx=$1
3163     _cc=$2
3164
3165     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3166     unset _ld_o _ldflags _ld_lib _ld_path
3167     unset _depflags _DEPCMD _DEPFLAGS
3168     _flags_filter=echo
3169
3170     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3171         _type=llvm_gcc
3172         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3173         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3174         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3175         _cflags_speed='-O3'
3176         _cflags_size='-Os'
3177     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3178         _type=gcc
3179         gcc_version=$($_cc --version | head -n1)
3180         gcc_basever=$($_cc -dumpversion)
3181         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3182         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3183         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3184         if ! $_cc -dumpversion | grep -q '^2\.'; then
3185             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3186         fi
3187         _cflags_speed='-O3'
3188         _cflags_size='-Os'
3189     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3190         _type=icc
3191         _ident=$($_cc --version | head -n1)
3192         _depflags='-MMD'
3193         _cflags_speed='-O3'
3194         _cflags_size='-Os'
3195         _cflags_noopt='-O1'
3196     elif $_cc -v 2>&1 | grep -q xlc; then
3197         _type=xlc
3198         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3199         _cflags_speed='-O5'
3200         _cflags_size='-O5 -qcompact'
3201     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3202         _type=ccc
3203         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3204         _DEPFLAGS='-M'
3205         _cflags_speed='-fast'
3206         _cflags_size='-O1'
3207         _flags_filter=ccc_flags
3208     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3209         test -d "$sysroot" || die "No valid sysroot specified."
3210         _type=armcc
3211         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3212         armcc_conf="$PWD/armcc.conf"
3213         $_cc --arm_linux_configure                 \
3214              --arm_linux_config_file="$armcc_conf" \
3215              --configure_sysroot="$sysroot"        \
3216              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3217              die "Error creating armcc configuration file."
3218         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3219         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3220         as_default="${cross_prefix}gcc"
3221         _depflags='-MMD'
3222         _cflags_speed='-O3'
3223         _cflags_size='-Os'
3224     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3225         _type=tms470
3226         _ident=$($_cc -version | head -n1 | tr -s ' ')
3227         _flags='--gcc --abi=eabi -me'
3228         _cc_e='-ppl -fe=$@'
3229         _cc_o='-fe=$@'
3230         _depflags='-ppa -ppd=$(@:.o=.d)'
3231         _cflags_speed='-O3 -mf=5'
3232         _cflags_size='-O3 -mf=2'
3233         _flags_filter=tms470_flags
3234     elif $_cc -v 2>&1 | grep -q clang; then
3235         _type=clang
3236         _ident=$($_cc --version 2>/dev/null | head -n1)
3237         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3238         _cflags_speed='-O3'
3239         _cflags_size='-Os'
3240     elif $_cc -V 2>&1 | grep -q Sun; then
3241         _type=suncc
3242         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3243         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3244         _DEPFLAGS='-xM1 -xc99'
3245         _ldflags='-std=c99'
3246         _cflags_speed='-O5'
3247         _cflags_size='-O5 -xspace'
3248         _flags_filter=suncc_flags
3249     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3250         _type=pathscale
3251         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3252         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3253         _cflags_speed='-O2'
3254         _cflags_size='-Os'
3255         _flags_filter='filter_out -Wdisabled-optimization'
3256     elif $_cc -v 2>&1 | grep -q Open64; then
3257         _type=open64
3258         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3259         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3260         _cflags_speed='-O2'
3261         _cflags_size='-Os'
3262         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3263     elif $_cc -V 2>&1 | grep -q Portland; then
3264         _type=pgi
3265         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3266         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3267         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3268         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3269         _cflags_noopt="-O1"
3270         _flags_filter=pgi_flags
3271     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3272         _type=armasm
3273         _ident=$($_cc | head -n1)
3274         # 4509: "This form of conditional instruction is deprecated"
3275         _flags="-nologo -ignore 4509"
3276         _flags_filter=armasm_flags
3277     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3278         _type=msvc
3279         _ident=$($_cc 2>&1 | head -n1)
3280         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3281         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3282         _cflags_speed="-O2"
3283         _cflags_size="-O1"
3284         _cflags_noopt="-O1"
3285         if $_cc -nologo- 2>&1 | grep -q Linker; then
3286             _ld_o='-out:$@'
3287         else
3288             _ld_o='-Fe$@'
3289         fi
3290         _cc_o='-Fo$@'
3291         _cc_e='-P -Fi$@'
3292         _flags_filter=msvc_flags
3293         _ld_lib='lib%.a'
3294         _ld_path='-libpath:'
3295         _flags='-nologo'
3296     elif $_cc 2>&1 | grep -q Intel; then
3297         _type=icl
3298         _ident=$($_cc 2>&1 | head -n1)
3299         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3300         # Not only is O3 broken on 13.x+ but it is slower on all previous
3301         # versions (tested) as well.
3302         _cflags_speed="-O2"
3303         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3304         if $_cc 2>&1 | grep -q Linker; then
3305             _ld_o='-out:$@'
3306         else
3307             _ld_o='-Fe$@'
3308         fi
3309         _cc_o='-Fo$@'
3310         _cc_e='-P'
3311         _flags_filter=icl_flags
3312         _ld_lib='lib%.a'
3313         _ld_path='-libpath:'
3314         # -Qdiag-error to make icl error when seeing certain unknown arguments
3315         _flags='-nologo -Qdiag-error:4044,10157'
3316         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3317         # with MSVC which enables it by default.
3318         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3319     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3320         # lld can emulate multiple different linkers; in ms link.exe mode,
3321         # the -? parameter gives the help output which contains an identifyable
3322         # string, while it gives an error in other modes.
3323         _type=lld-link
3324         # The link.exe mode doesn't have a switch for getting the version,
3325         # but we can force it back to gnu mode and get the version from there.
3326         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3327         _ld_o='-out:$@'
3328         _flags_filter=msvc_flags
3329         _ld_lib='lib%.a'
3330         _ld_path='-libpath:'
3331     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3332         _type=cparser
3333         _ident=$($_cc --version | head -n1)
3334         _depflags='-MMD'
3335         _cflags_speed='-O4'
3336         _cflags_size='-O2'
3337         _flags_filter=cparser_flags
3338     fi
3339
3340     eval ${pfx}_type=\$_type
3341     eval ${pfx}_ident=\$_ident
3342 }
3343
3344 set_ccvars(){
3345     eval ${1}_C=\${_cc_c-\${${1}_C}}
3346     eval ${1}_E=\${_cc_e-\${${1}_E}}
3347     eval ${1}_O=\${_cc_o-\${${1}_O}}
3348
3349     if [ -n "$_depflags" ]; then
3350         eval ${1}_DEPFLAGS=\$_depflags
3351     else
3352         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3353         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3354         eval DEP${1}FLAGS=\$_flags
3355     fi
3356 }
3357
3358 probe_cc cc "$cc"
3359 cflags_filter=$_flags_filter
3360 cflags_speed=$_cflags_speed
3361 cflags_size=$_cflags_size
3362 cflags_noopt=$_cflags_noopt
3363 add_cflags $_flags $_cflags
3364 cc_ldflags=$_ldflags
3365 set_ccvars CC
3366
3367 probe_cc hostcc "$host_cc"
3368 host_cflags_filter=$_flags_filter
3369 add_host_cflags  $_flags $_cflags
3370 set_ccvars HOSTCC
3371
3372 test -n "$cc_type" && enable $cc_type ||
3373     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3374
3375 : ${as_default:=$cc}
3376 : ${objcc_default:=$cc}
3377 : ${dep_cc_default:=$cc}
3378 : ${ld_default:=$cc}
3379 : ${host_ld_default:=$host_cc}
3380 set_default ar as objcc dep_cc ld host_ld
3381
3382 probe_cc as "$as"
3383 asflags_filter=$_flags_filter
3384 add_asflags $_flags $_cflags
3385 set_ccvars AS
3386
3387 probe_cc objcc "$objcc"
3388 objcflags_filter=$_flags_filter
3389 add_objcflags $_flags $_cflags
3390 set_ccvars OBJC
3391
3392 probe_cc ld "$ld"
3393 ldflags_filter=$_flags_filter
3394 add_ldflags $_flags $_ldflags
3395 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3396 LD_O=${_ld_o-$LD_O}
3397 LD_LIB=${_ld_lib-$LD_LIB}
3398 LD_PATH=${_ld_path-$LD_PATH}
3399
3400 probe_cc hostld "$host_ld"
3401 host_ldflags_filter=$_flags_filter
3402 add_host_ldflags $_flags $_ldflags
3403 HOSTLD_O=${_ld_o-$HOSTLD_O}
3404
3405 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3406     probe_cc depcc "$dep_cc"
3407     CCDEP=${_DEPCMD:-$DEPCMD}
3408     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3409     DEPCCFLAGS=$_flags
3410 fi
3411
3412 if $ar 2>&1 | grep -q Microsoft; then
3413     arflags="-nologo"
3414     ar_o='-out:$@'
3415 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3416     arflags="rq"
3417     ar_o='$@'
3418 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3419     arflags='-Xany -r -c'
3420     ar_o='$@'
3421 else
3422     arflags="rc"
3423     ar_o='$@'
3424 fi
3425
3426 add_cflags $extra_cflags
3427 add_objcflags $extra_objcflags
3428 add_asflags $extra_cflags
3429
3430 if test -n "$sysroot"; then
3431     case "$cc_type" in
3432         gcc|llvm_gcc|clang)
3433             add_cppflags --sysroot="$sysroot"
3434             add_ldflags --sysroot="$sysroot"
3435         ;;
3436         tms470)
3437             add_cppflags -I"$sysinclude"
3438             add_ldflags  --sysroot="$sysroot"
3439         ;;
3440     esac
3441 fi
3442
3443 if test "$cpu" = host; then
3444     enabled cross_compile &&
3445         die "--cpu=host makes no sense when cross-compiling."
3446
3447     case "$cc_type" in
3448         gcc|llvm_gcc)
3449             check_native(){
3450                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3451                 sed -n "/cc1.*$1=/{
3452                             s/.*$1=\\([^ ]*\\).*/\\1/
3453                             p
3454                             q
3455                         }" $TMPE
3456             }
3457             cpu=$(check_native -march || check_native -mcpu)
3458         ;;
3459     esac
3460
3461     test "${cpu:-host}" = host &&
3462         die "--cpu=host not supported with compiler $cc"
3463 fi
3464
3465 # Deal with common $arch aliases
3466 case "$arch" in
3467     aarch64|arm64)
3468         arch="aarch64"
3469     ;;
3470     arm*)
3471         arch="arm"
3472     ;;
3473     mips*|IP*)
3474         case "$arch" in
3475         *el)
3476             add_cppflags -EL
3477             add_ldflags -EL
3478         ;;
3479         *eb)
3480             add_cppflags -EB
3481             add_ldflags -EB
3482         ;;
3483         esac
3484         arch="mips"
3485     ;;
3486     parisc*|hppa*)
3487         arch="parisc"
3488     ;;
3489     "Power Macintosh"|ppc*|powerpc*)
3490         arch="ppc"
3491     ;;
3492     s390|s390x)
3493         arch="s390"
3494     ;;
3495     sh4|sh)
3496         arch="sh4"
3497     ;;
3498     sun4u|sparc*)
3499         arch="sparc"
3500     ;;
3501     tilegx|tile-gx)
3502         arch="tilegx"
3503     ;;
3504     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3505         arch="x86"
3506     ;;
3507 esac
3508
3509 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3510 enable $arch
3511
3512 # Add processor-specific flags
3513 if enabled aarch64; then
3514
3515     case $cpu in
3516         armv*)
3517             cpuflags="-march=$cpu"
3518         ;;
3519         *)
3520             cpuflags="-mcpu=$cpu"
3521         ;;
3522     esac
3523
3524 elif enabled alpha; then
3525
3526     cpuflags="-mcpu=$cpu"
3527
3528 elif enabled arm; then
3529
3530     check_arm_arch() {
3531         check_cpp_condition stddef.h \
3532             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3533             $cpuflags
3534     }
3535
3536     probe_arm_arch() {
3537         if   check_arm_arch 4;        then echo armv4
3538         elif check_arm_arch 4T;       then echo armv4t
3539         elif check_arm_arch 5;        then echo armv5
3540         elif check_arm_arch 5E;       then echo armv5e
3541         elif check_arm_arch 5T;       then echo armv5t
3542         elif check_arm_arch 5TE;      then echo armv5te
3543         elif check_arm_arch 5TEJ;     then echo armv5te
3544         elif check_arm_arch 6;        then echo armv6
3545         elif check_arm_arch 6J;       then echo armv6j
3546         elif check_arm_arch 6K;       then echo armv6k
3547         elif check_arm_arch 6Z;       then echo armv6z
3548         elif check_arm_arch 6ZK;      then echo armv6zk
3549         elif check_arm_arch 6T2;      then echo armv6t2
3550         elif check_arm_arch 7;        then echo armv7
3551         elif check_arm_arch 7A  7_A;  then echo armv7-a
3552         elif check_arm_arch 7S;       then echo armv7-a
3553         elif check_arm_arch 7R  7_R;  then echo armv7-r
3554         elif check_arm_arch 7M  7_M;  then echo armv7-m
3555         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3556         elif check_arm_arch 8A  8_A;  then echo armv8-a
3557         fi
3558     }
3559
3560     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3561
3562     case $cpu in
3563         armv*)
3564             cpuflags="-march=$cpu"
3565             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3566         ;;
3567         *)
3568             cpuflags="-mcpu=$cpu"
3569             case $cpu in
3570                 cortex-a*)                               subarch=armv7a  ;;
3571                 cortex-r*)                               subarch=armv7r  ;;
3572                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3573                 arm11*)                                  subarch=armv6   ;;
3574                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3575                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3576                 *)                             subarch=$(probe_arm_arch) ;;
3577             esac
3578         ;;
3579     esac
3580
3581     case "$subarch" in
3582         armv5t*)    enable fast_clz                ;;
3583         armv[6-8]*) enable fast_clz fast_unaligned ;;
3584     esac
3585
3586 elif enabled avr32; then
3587
3588     case $cpu in
3589         ap7[02]0[0-2])
3590             subarch="avr32_ap"
3591             cpuflags="-mpart=$cpu"
3592         ;;
3593         ap)
3594             subarch="avr32_ap"
3595             cpuflags="-march=$cpu"
3596         ;;
3597         uc3[ab]*)
3598             subarch="avr32_uc"
3599             cpuflags="-mcpu=$cpu"
3600         ;;
3601         uc)
3602             subarch="avr32_uc"
3603             cpuflags="-march=$cpu"
3604         ;;
3605     esac
3606
3607 elif enabled bfin; then
3608
3609     cpuflags="-mcpu=$cpu"
3610
3611 elif enabled mips; then
3612
3613     cpuflags="-march=$cpu"
3614
3615 elif enabled ppc; then
3616
3617     disable ldbrx
3618
3619     case $(tolower $cpu) in
3620         601|ppc601|powerpc601)
3621             cpuflags="-mcpu=601"
3622             disable altivec
3623         ;;
3624         603*|ppc603*|powerpc603*)
3625             cpuflags="-mcpu=603"
3626             disable altivec
3627         ;;
3628         604*|ppc604*|powerpc604*)
3629             cpuflags="-mcpu=604"
3630             disable altivec
3631         ;;
3632         g3|75*|ppc75*|powerpc75*)
3633             cpuflags="-mcpu=750"
3634             disable altivec
3635         ;;
3636         g4|745*|ppc745*|powerpc745*)
3637             cpuflags="-mcpu=7450"
3638             disable vsx
3639         ;;
3640         74*|ppc74*|powerpc74*)
3641             cpuflags="-mcpu=7400"
3642             disable vsx
3643         ;;
3644         g5|970|ppc970|powerpc970)
3645             cpuflags="-mcpu=970"
3646             disable vsx
3647         ;;
3648         power[3-6]*)
3649             cpuflags="-mcpu=$cpu"
3650             disable vsx
3651         ;;
3652         power[7-8]*)
3653             cpuflags="-mcpu=$cpu"
3654             enable ldbrx
3655         ;;
3656         cell)
3657             cpuflags="-mcpu=cell"
3658             enable ldbrx
3659             disable vsx
3660         ;;
3661         e500mc)
3662             cpuflags="-mcpu=e500mc"
3663             disable altivec
3664         ;;
3665         e500v2)
3666             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3667             disable altivec
3668             disable dcbzl
3669         ;;
3670         e500)
3671             cpuflags="-mcpu=8540 -mhard-float"
3672             disable altivec
3673             disable dcbzl
3674         ;;
3675     esac
3676
3677 elif enabled sparc; then
3678
3679     case $cpu in
3680         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3681             cpuflags="-mcpu=$cpu"
3682         ;;
3683         ultrasparc*|niagara[234])
3684             cpuflags="-mcpu=$cpu"
3685         ;;
3686     esac
3687
3688 elif enabled x86; then
3689
3690     case $cpu in
3691         i[345]86|pentium)
3692             cpuflags="-march=$cpu"
3693             disable i686
3694             disable mmx
3695         ;;
3696         # targets that do NOT support nopl and conditional mov (cmov)
3697         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3698             cpuflags="-march=$cpu"
3699             disable i686
3700         ;;
3701         # targets that do support nopl and conditional mov (cmov)
3702         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3703             cpuflags="-march=$cpu"
3704             enable i686
3705             enable fast_cmov
3706         ;;
3707         # targets that do support conditional mov but on which it's slow
3708         pentium4|pentium4m|prescott|nocona)
3709             cpuflags="-march=$cpu"
3710             enable i686
3711             disable fast_cmov
3712         ;;
3713     esac
3714
3715 fi
3716
3717 if [ "$cpu" != generic ]; then
3718     add_cflags  $cpuflags
3719     add_asflags $cpuflags
3720     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3721 fi
3722
3723 # compiler sanity check
3724 check_exec <<EOF
3725 int main(void){ return 0; }
3726 EOF
3727 if test "$?" != 0; then
3728     echo "$cc is unable to create an executable file."
3729     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3730         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3731         echo "Only do this if you know what cross compiling means."
3732     fi
3733     die "C compiler test failed."
3734 fi
3735
3736 add_cppflags -D_ISOC99_SOURCE
3737
3738 # some compilers silently accept -std=c11, so we also need to check that the
3739 # version macro is defined properly
3740 if test_cflags_cpp -std=c11 "__STDC_VERSION__ >= 201112L"; then
3741     add_cflags -std=c11
3742 else
3743     check_cflags -std=c99
3744 fi
3745
3746 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3747 #include <stdlib.h>
3748 EOF
3749 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3750 #include <stdlib.h>
3751 EOF
3752
3753 add_host_cppflags -D_ISOC99_SOURCE
3754 check_host_cflags -std=c99
3755 check_host_cflags -Wall
3756 check_host_cflags -O3
3757
3758 check_64bit(){
3759     arch32=$1
3760     arch64=$2
3761     expr=$3
3762     check_code cc "" "int test[2*($expr) - 1]" &&
3763         subarch=$arch64 || subarch=$arch32
3764 }
3765
3766 case "$arch" in
3767     aarch64|alpha|ia64)
3768         spic=$shared
3769     ;;
3770     mips)
3771         check_64bit mips mips64 '_MIPS_SIM > 1'
3772         spic=$shared
3773     ;;
3774     parisc)
3775         check_64bit parisc parisc64 'sizeof(void *) > 4'
3776         spic=$shared
3777     ;;
3778     ppc)
3779         check_64bit ppc ppc64 'sizeof(void *) > 4'
3780         spic=$shared
3781     ;;
3782     s390)
3783         check_64bit s390 s390x 'sizeof(void *) > 4'
3784         spic=$shared
3785     ;;
3786     sparc)
3787         check_64bit sparc sparc64 'sizeof(void *) > 4'
3788         spic=$shared
3789     ;;
3790     x86)
3791         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3792         if test "$subarch" = "x86_64"; then
3793             spic=$shared
3794         fi
3795     ;;
3796 esac
3797
3798 enable $subarch
3799 enabled spic && enable_weak pic
3800
3801 # OS specific
3802 case $target_os in
3803     aix)
3804         SHFLAGS=-shared
3805         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3806         enabled shared && add_ldflags -Wl,-brtl
3807         ;;
3808     android)
3809         disable symver
3810         enable section_data_rel_ro
3811         SLIB_INSTALL_NAME='$(SLIBNAME)'
3812         SLIB_INSTALL_LINKS=
3813         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3814         ;;
3815     haiku)
3816         prefix_default="/boot/common"
3817         network_extralibs="-lnetwork"
3818         host_extralibs=
3819         ;;
3820     sunos)
3821         SHFLAGS='-shared -Wl,-h,$$(@F)'
3822         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3823         network_extralibs="-lsocket -lnsl"
3824         # When using suncc to build, the Solaris linker will mark
3825         # an executable with each instruction set encountered by
3826         # the Solaris assembler.  As our libraries contain their own
3827         # guards for processor-specific code, instead suppress
3828         # generation of the HWCAPS ELF section on Solaris x86 only.
3829         enabled_all suncc x86 &&
3830             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3831             add_ldflags -Wl,-M,mapfile
3832         nm_default='nm -P -g'
3833         version_script='-M'
3834         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3835         ;;
3836     netbsd)
3837         disable symver
3838         oss_indev_extralibs="-lossaudio"
3839         oss_outdev_extralibs="-lossaudio"
3840         ;;
3841     openbsd|bitrig)
3842         disable symver
3843         SHFLAGS='-shared'
3844         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3845         SLIB_INSTALL_LINKS=
3846         oss_indev_extralibs="-lossaudio"
3847         oss_outdev_extralibs="-lossaudio"
3848         ;;
3849     dragonfly)
3850         disable symver
3851         ;;
3852     freebsd)
3853         ;;
3854     bsd/os)
3855         add_extralibs -lpoll -lgnugetopt
3856         ;;
3857     darwin)
3858         enabled ppc && add_asflags -force_cpusubtype_ALL
3859         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3860         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3861         add_ldflags -Wl,-dynamic,-search_paths_first
3862         SLIBSUF=".dylib"
3863         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3864         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3865         objformat="macho"
3866         enabled x86_64 && objformat="macho64"
3867         enabled_any pic shared ||
3868             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3869         check_header dispatch/dispatch.h &&
3870             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3871         ;;
3872     msys*)
3873         die "Native MSYS builds are discouraged, please use the MINGW environment."
3874         ;;
3875     mingw32*|mingw64*)
3876         if test $target_os = "mingw32ce"; then
3877             disable network
3878         else
3879             target_os=mingw32
3880         fi
3881         LIBTARGET=i386
3882         if enabled x86_64; then
3883             LIBTARGET="i386:x86-64"
3884         elif enabled arm; then
3885             LIBTARGET=arm-wince
3886         fi
3887         check_ldflags -Wl,--nxcompat
3888         check_ldflags -Wl,--dynamicbase
3889         shlibdir_default="$bindir_default"
3890         SLIBPREF=""
3891         SLIBSUF=".dll"
3892         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3893         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3894         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3895         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3896         SLIB_INSTALL_LINKS=
3897         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3898         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3899         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3900         objformat="win32"
3901         dlltool="${cross_prefix}dlltool"
3902         ranlib=:
3903         enable dos_paths
3904         ;;
3905     win32|win64)
3906         disable symver
3907         if enabled shared; then
3908             # Link to the import library instead of the normal static library
3909             # for shared libs.
3910             LD_LIB='%.lib'
3911             # Cannot build both shared and static libs with MSVC or icl.
3912             disable static
3913         fi
3914         shlibdir_default="$bindir_default"
3915         SLIBPREF=""
3916         SLIBSUF=".dll"
3917         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3918         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3919         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3920         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3921         SLIB_INSTALL_LINKS=
3922         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3923         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3924         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3925         objformat="win32"
3926         ranlib=:
3927         enable dos_paths
3928         ;;
3929     cygwin*)
3930         target_os=cygwin
3931         shlibdir_default="$bindir_default"
3932         SLIBPREF="cyg"
3933         SLIBSUF=".dll"
3934         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3935         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3936         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3937         SLIB_INSTALL_LINKS=
3938         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
3939         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
3940         objformat="win32"
3941         enable dos_paths
3942         ;;
3943     *-dos|freedos|opendos)
3944         network_extralibs="-lsocket"
3945         objformat="coff"
3946         enable dos_paths
3947         add_cppflags -U__STRICT_ANSI__
3948         ;;
3949     linux)
3950         enable dv1394
3951         enable section_data_rel_ro
3952         ;;
3953     irix*)
3954         target_os=irix
3955         ranlib="echo ignoring ranlib"
3956         ;;
3957     os/2*)
3958         ln_s="cp -f"
3959         objformat="aout"
3960         add_cppflags -D_GNU_SOURCE
3961         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3962         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3963         LIBSUF="_s.a"
3964         SLIBPREF=""
3965         SLIBSUF=".dll"
3966         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3967         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3968         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3969             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3970             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3971             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3972             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3973         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3974             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3975         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3976         enable dos_paths
3977         ;;
3978     gnu/kfreebsd)
3979         add_cppflags -D_BSD_SOURCE
3980         ;;
3981     gnu)
3982         ;;
3983     qnx)
3984         add_cppflags -D_QNX_SOURCE
3985         network_extralibs="-lsocket"
3986         ;;
3987     symbian)
3988         SLIBSUF=".dll"
3989         enable dos_paths
3990         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3991         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3992         add_ldflags -Wl,--target1-abs,--no-undefined \
3993                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3994                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3995         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3996                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3997                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3998         ;;
3999     osf1)
4000         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4001         ;;
4002     minix)
4003         ;;
4004     none)
4005         ;;
4006     *)
4007         die "Unknown OS '$target_os'."
4008         ;;
4009 esac
4010
4011 # determine libc flavour
4012
4013 probe_libc(){
4014     pfx=$1
4015     pfx_no_=${pfx%_}
4016     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4017     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4018         eval ${pfx}libc_type=uclibc
4019         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4020     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4021         eval ${pfx}libc_type=glibc
4022         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4023     # MinGW headers can be installed on Cygwin, so check for newlib first.
4024     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4025         eval ${pfx}libc_type=newlib
4026         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4027     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4028     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4029         eval ${pfx}libc_type=mingw64
4030         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4031         eval test \$${pfx_no_}cc_type = "gcc" &&
4032             add_${pfx}cppflags -D__printf__=__gnu_printf__
4033     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4034          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4035         eval ${pfx}libc_type=mingw32
4036         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4037             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4038             die "ERROR: MinGW32 runtime version must be >= 3.15."
4039         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4040         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
4041             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4042         eval test \$${pfx_no_}cc_type = "gcc" &&
4043             add_${pfx}cppflags -D__printf__=__gnu_printf__
4044     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4045         eval ${pfx}libc_type=msvcrt
4046         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4047             if [ "$pfx" = host_ ]; then
4048                 add_host_cppflags -Dsnprintf=_snprintf
4049             else
4050                 add_compat strtod.o strtod=avpriv_strtod
4051                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4052                                              _snprintf=avpriv_snprintf  \
4053                                              vsnprintf=avpriv_vsnprintf
4054             fi
4055         fi
4056         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4057         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4058         # 0x601 by default unless something else is set by the user.
4059         # This can easily lead to us detecting functions only present
4060         # in such new versions and producing binaries requiring windows 7.0.
4061         # Therefore explicitly set the default to XP unless the user has
4062         # set something else on the command line.
4063         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4064         # family. For these cases, configure is free to use any functions
4065         # found in the SDK headers by default. (Alternatively, we could force
4066         # _WIN32_WINNT to 0x0602 in that case.)
4067         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4068             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4069 #ifdef WINAPI_FAMILY
4070 #include <winapifamily.h>
4071 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4072 #error not desktop
4073 #endif
4074 #endif
4075 EOF
4076         if [ "$pfx" = "" ]; then
4077             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4078         fi
4079     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4080         eval ${pfx}libc_type=klibc
4081     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4082         eval ${pfx}libc_type=bionic
4083     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4084         eval ${pfx}libc_type=solaris
4085         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4086     else
4087         eval ${pfx}libc_type=default
4088         add_${pfx}cppflags -D_DEFAULT_SOURCE
4089     fi
4090 }
4091
4092 probe_libc
4093 test -n "$libc_type" && enable libc_$libc_type
4094 probe_libc host_
4095 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4096
4097 case $libc_type in
4098     bionic)
4099         add_compat strtod.o strtod=avpriv_strtod
4100         ;;
4101 esac
4102
4103 # hacks for compiler/libc/os combinations
4104
4105 if enabled_all tms470 libc_glibc; then
4106     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4107     add_cppflags -D__USER_LABEL_PREFIX__=
4108     add_cppflags -D__builtin_memset=memset
4109     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4110     add_cflags   -pds=48    # incompatible redefinition of macro
4111 fi
4112
4113 if enabled_all ccc libc_glibc; then
4114     add_ldflags -Wl,-z,now  # calls to libots crash without this
4115 fi
4116
4117 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4118     add_cppflags '-I\$(SRC_PATH)/compat/float'
4119
4120 esc(){
4121     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4122 }
4123
4124 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
4125
4126 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4127
4128 set_default $PATHS_LIST
4129 set_default nm
4130
4131 # we need to build at least one lib type
4132 if ! enabled_any static shared; then
4133     cat <<EOF
4134 At least one library type must be built.
4135 Specify --enable-static to build the static libraries or --enable-shared to
4136 build the shared libraries as well. To only build the shared libraries specify
4137 --disable-static in addition to --enable-shared.
4138 EOF
4139     exit 1
4140 fi
4141
4142 disabled optimizations || check_cflags -fomit-frame-pointer
4143
4144 enable_weak_pic() {
4145     disabled pic && return
4146     enable pic
4147     add_cppflags -DPIC
4148     case "$target_os" in
4149     mingw*|cygwin*)
4150         ;;
4151     *)
4152         add_cflags -fPIC
4153         ;;
4154     esac
4155     add_asflags  -fPIC
4156 }
4157
4158 enabled pic && enable_weak_pic
4159
4160 check_cc <<EOF || die "Symbol mangling check failed."
4161 int ff_extern;
4162 EOF
4163 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4164 extern_prefix=${sym%%ff_extern*}
4165
4166 check_cc <<EOF && enable_weak inline_asm
4167 void foo(void) { __asm__ volatile ("" ::); }
4168 EOF
4169
4170 _restrict=
4171 for restrict_keyword in restrict __restrict__ __restrict; do
4172     check_cc <<EOF && _restrict=$restrict_keyword && break
4173 void foo(char * $restrict_keyword p);
4174 EOF
4175 done
4176
4177 check_cc <<EOF && enable pragma_deprecated
4178 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4179 EOF
4180
4181 check_cc <<EOF && enable attribute_packed
4182 struct { int x; } __attribute__((packed)) x;
4183 EOF
4184
4185 check_cc <<EOF && enable attribute_may_alias
4186 union { int x; } __attribute__((may_alias)) x;
4187 EOF
4188
4189 check_cc <<EOF || die "endian test failed"
4190 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4191 EOF
4192 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4193
4194 check_gas() {
4195     log "check_gas using '$as' as AS"
4196     # :vararg is used on aarch64, arm and ppc altivec
4197     check_as <<EOF || return 1
4198 .macro m n, y:vararg=0
4199 \n: .int \y
4200 .endm
4201 m x
4202 EOF
4203     # .altmacro is only used in arm asm
4204     ! enabled arm || check_as <<EOF || return 1
4205 .altmacro
4206 EOF
4207     enable gnu_as
4208     return 0
4209 }
4210
4211 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4212     nogas=:
4213     enabled_any arm aarch64 && nogas=die
4214     enabled_all ppc altivec && nogas=warn
4215     as_noop=-v
4216
4217     case $as_type in
4218         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4219         gcc)  gaspp_as_type=gas ;;
4220         *)    gaspp_as_type=$as_type ;;
4221     esac
4222
4223     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4224
4225     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4226         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4227
4228     if ! check_gas ; then
4229         as=${gas:=$as}
4230         check_gas || \
4231             $nogas "GNU assembler not found, install/update gas-preprocessor"
4232     fi
4233
4234     check_as <<EOF && enable as_func
4235 .func test
4236 .endfunc
4237 EOF
4238 fi
4239
4240 check_inline_asm inline_asm_labels '"1:\n"'
4241
4242 if enabled aarch64; then
4243     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4244     # internal assembler in clang 3.3 does not support this instruction
4245     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4246     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4247
4248     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4249
4250 elif enabled alpha; then
4251
4252     check_cflags -mieee
4253
4254 elif enabled arm; then
4255
4256     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4257     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4258     enabled thumb && check_cflags -mthumb || check_cflags -marm
4259
4260     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4261         enable vfp_args
4262     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4263         enable vfp_args
4264     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4265         case "${cross_prefix:-$cc}" in
4266             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4267             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4268 __asm__ (".eabi_attribute 28, 1");
4269 int main(void) { return 0; }
4270 EOF
4271         esac
4272         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4273     fi
4274
4275     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4276     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4277     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4278     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4279     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4280     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4281
4282     [ $target_os = linux ] || [ $target_os = android ] ||
4283         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4284             $ARCH_EXT_LIST_ARM
4285
4286     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4287
4288     check_as <<EOF && enable as_dn_directive
4289 ra .dn d0.i16
4290 .unreq ra
4291 EOF
4292     check_as <<EOF && enable as_fpu_directive
4293 .fpu neon
4294 EOF
4295
4296     # llvm's integrated assembler supports .object_arch from llvm 3.5
4297     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4298 .object_arch armv4
4299 EOF
4300
4301     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4302
4303 elif enabled mips; then
4304
4305     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4306
4307     # make sure that only an instruction set is enabled
4308     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4309
4310     if enabled mips64; then
4311         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4312             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4313                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4314     else
4315         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4316             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4317                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4318     fi
4319
4320 elif enabled parisc; then
4321
4322     if enabled gcc; then
4323         case $($cc -dumpversion) in
4324             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4325         esac
4326     fi
4327
4328 elif enabled ppc; then
4329
4330     enable local_aligned_8 local_aligned_16 local_aligned_32
4331
4332     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4333     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4334     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4335     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4336
4337     # AltiVec flags: The FSF version of GCC differs from the Apple version
4338     if enabled altivec; then
4339         check_cflags -maltivec -mabi=altivec &&
4340         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4341         check_cflags -faltivec
4342
4343         # check if our compiler supports Motorola AltiVec C API
4344         check_cc <<EOF || disable altivec
4345 $inc_altivec_h
4346 int main(void) {
4347     vector signed int v1 = (vector signed int) { 0 };
4348     vector signed int v2 = (vector signed int) { 1 };
4349     v1 = vec_add(v1, v2);
4350     return 0;
4351 }
4352 EOF
4353
4354         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4355     fi
4356
4357     if enabled vsx; then
4358         check_cflags -mvsx &&
4359         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4360     fi
4361
4362     if enabled power8; then
4363         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4364     fi
4365
4366 elif enabled x86; then
4367
4368     check_builtin rdtsc    intrin.h   "__rdtsc()"
4369     check_builtin mm_empty mmintrin.h "_mm_empty()"
4370
4371     enable local_aligned_8 local_aligned_16 local_aligned_32
4372
4373     # check whether EBP is available on x86
4374     # As 'i' is stored on the stack, this program will crash
4375     # if the base pointer is used to access it because the
4376     # base pointer is cleared in the inline assembly code.
4377     check_exec_crash <<EOF && enable ebp_available
4378 volatile int i=0;
4379 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4380 return i;
4381 EOF
4382
4383     # check whether EBX is available on x86
4384     check_inline_asm ebx_available '""::"b"(0)' &&
4385         check_inline_asm ebx_available '"":::"%ebx"'
4386
4387     # check whether xmm clobbers are supported
4388     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4389
4390     # check whether binutils is new enough to compile SSSE3/MMXEXT
4391     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4392     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4393
4394     if ! disabled_any asm mmx yasm; then
4395         if check_cmd $yasmexe --version; then
4396             enabled x86_64 && yasm_extra="-m amd64"
4397             yasm_debug="-g dwarf2"
4398         elif check_cmd nasm -v; then
4399             yasmexe=nasm
4400             yasm_debug="-g -F dwarf"
4401             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4402         fi
4403
4404         YASMFLAGS="-f $objformat $yasm_extra"
4405         enabled pic               && append YASMFLAGS "-DPIC"
4406         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4407         case "$objformat" in
4408             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4409         esac
4410
4411         check_yasm "movbe ecx, [5]" && enable yasm ||
4412             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4413         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4414         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4415         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4416         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4417         check_yasm "CPU amdnop" || disable cpunop
4418     fi
4419
4420     case "$cpu" in
4421         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4422             disable fast_clz
4423         ;;
4424     esac
4425
4426 fi
4427
4428 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4429
4430 check_ldflags -Wl,--as-needed
4431
4432 if check_func dlopen; then
4433     ldl=
4434 elif check_func dlopen -ldl; then
4435     ldl=-ldl
4436 fi
4437
4438 if ! disabled network; then
4439     check_func getaddrinfo $network_extralibs
4440     check_func inet_aton $network_extralibs
4441
4442     check_type netdb.h "struct addrinfo"
4443     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4444     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4445     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4446     check_type poll.h "struct pollfd"
4447     check_type netinet/sctp.h "struct sctp_event_subscribe"
4448     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4449     check_type netinet/in.h "struct sockaddr_in6"
4450     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4451     check_type "sys/types.h sys/socket.h" socklen_t
4452
4453     # Prefer arpa/inet.h over winsock2
4454     if check_header arpa/inet.h ; then
4455         check_func closesocket
4456     elif check_header winsock2.h ; then
4457         check_func_headers winsock2.h closesocket -lws2 &&
4458             network_extralibs="-lws2" ||
4459         { check_func_headers winsock2.h closesocket -lws2_32 &&
4460             network_extralibs="-lws2_32"; } || disable winsock2_h network
4461         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4462
4463         check_type ws2tcpip.h socklen_t
4464         check_type ws2tcpip.h "struct addrinfo"
4465         check_type ws2tcpip.h "struct group_source_req"
4466         check_type ws2tcpip.h "struct ip_mreq_source"
4467         check_type ws2tcpip.h "struct ipv6_mreq"
4468         check_type winsock2.h "struct pollfd"
4469         check_struct winsock2.h "struct sockaddr" sa_len
4470         check_type ws2tcpip.h "struct sockaddr_in6"
4471         check_type ws2tcpip.h "struct sockaddr_storage"
4472     else
4473         disable network
4474     fi
4475 fi
4476
4477 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4478 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4479 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4480 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4481
4482 case "$custom_allocator" in
4483     jemalloc)
4484         # jemalloc by default does not use a prefix
4485         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4486     ;;
4487     tcmalloc)
4488         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
4489         malloc_prefix=tc_
4490     ;;
4491 esac
4492
4493 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4494 check_func  ${malloc_prefix}memalign            && enable memalign
4495 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4496
4497 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4498     check_func_headers time.h clock_gettime ||
4499         { check_lib clock_gettime time.h clock_gettime -lrt && LIBRT="-lrt"; }
4500
4501 check_func  fcntl
4502 check_func  fork
4503 check_func  gethrtime
4504 check_func  getopt
4505 check_func  getrusage
4506 check_func  gettimeofday
4507 check_func  gmtime_r
4508 check_func  isatty
4509 check_func  localtime_r
4510 check_func  mach_absolute_time
4511 check_func  mkstemp
4512 check_func  mmap
4513 check_func  mprotect
4514 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4515 check_func_headers time.h nanosleep || check_lib nanosleep time.h nanosleep -lrt
4516 check_func  sched_getaffinity
4517 check_func  setrlimit
4518 check_func  strerror_r
4519 check_func  sysconf
4520 check_func  sysctl
4521 check_func  usleep
4522
4523 check_func_headers io.h setmode
4524 check_func_headers stdlib.h getenv
4525
4526 check_func_headers windows.h GetProcessAffinityMask
4527 check_func_headers windows.h GetProcessTimes
4528 check_func_headers windows.h GetSystemTimeAsFileTime
4529 check_func_headers windows.h LoadLibrary
4530 check_func_headers windows.h MapViewOfFile
4531 check_func_headers windows.h SetConsoleTextAttribute
4532 check_func_headers windows.h Sleep
4533 check_func_headers windows.h VirtualAlloc
4534 check_struct windows.h "CONDITION_VARIABLE" Ptr
4535
4536 check_header d3d11.h
4537 check_header direct.h
4538 check_header dlfcn.h
4539 check_header dxva.h
4540 check_header dxva2api.h
4541 check_header io.h
4542 check_header mach/mach_time.h
4543 check_header malloc.h
4544 check_header poll.h
4545 check_header sys/mman.h
4546 check_header sys/param.h
4547 check_header sys/resource.h
4548 check_header sys/select.h
4549 check_header sys/time.h
4550 check_header sys/un.h
4551 check_header unistd.h
4552 check_header valgrind/valgrind.h
4553 check_header VideoDecodeAcceleration/VDADecoder.h
4554 check_header windows.h
4555 check_header X11/extensions/XvMClib.h
4556
4557 # it seems there are versions of clang in some distros that try to use the
4558 # gcc headers, which explodes for stdatomic
4559 # so we also check that atomics actually work here
4560 check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4561
4562 check_lib shell32  "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4563 check_lib wincrypt "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4564 check_lib psapi    "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4565
4566 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4567
4568 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4569 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4570 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4571
4572 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4573 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4574 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4575 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4576 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4577
4578 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4579
4580 if ! disabled w32threads && ! enabled pthreads; then
4581     check_lib w32threads "windows.h process.h" _beginthreadex
4582 fi
4583
4584 # check for some common methods of building with pthread support
4585 # do this before the optional library checks as some of them require pthreads
4586 if ! disabled pthreads && ! enabled w32threads; then
4587     if check_lib pthreads pthread.h pthread_join -pthread; then
4588         add_cflags -pthread
4589     elif check_lib pthreads pthread.h pthread_join -pthreads; then
4590         add_cflags -pthreads
4591     elif check_lib pthreads pthread.h pthread_join -lpthreadGC2; then
4592         :
4593     elif check_lib pthreads pthread.h pthread_join -lpthread; then
4594         :
4595     elif check_func pthread_join; then
4596         enable pthreads
4597     fi
4598 fi
4599
4600 enabled pthreads &&
4601     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
4602
4603 disabled  zlib || check_lib  zlib  zlib.h      zlibVersion -lz
4604 disabled bzlib || check_lib bzlib bzlib.h BZ2_bzlibVersion -lbz2
4605
4606 check_lib libm math.h sin -lm && LIBM="-lm"
4607
4608 atan2f_args=2
4609 ldexpf_args=2
4610 powf_args=2
4611
4612 for func in $MATH_FUNCS; do
4613     eval check_mathfunc $func \${${func}_args:-1} $LIBM
4614 done
4615
4616 # these are off by default, so fail if requested and not available
4617 enabled avisynth          && { check_header avisynth/avisynth_c.h || die "ERROR: avisynth/avisynth_c.h header not found"; }
4618 enabled avxsynth          && require avxsynth "avxsynth/avxsynth_c.h dlfcn.h" dlopen -ldl
4619 enabled cuda              && require cuda cuda.h cuInit -lcuda
4620 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4621 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4622 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4623 enabled libdc1394         && require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new
4624 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4625 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4626 enabled libfdk_aac        && require_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4627 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4628 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4629 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4630                                    check_lib libgsm "${gsm_hdr}" gsm_create -lgsm && break;
4631                                done || die "ERROR: libgsm not found"; }
4632 enabled libhdcd           && require_pkg_config libhdcd "hdcd/hdcd_simple.h" hdcd_new
4633 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4634 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4635 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
4636 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4637 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4638 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4639 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4640 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4641 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
4642 enabled libopenjpeg       && { check_lib libopenjpeg openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4643                                require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4644 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4645 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4646 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4647 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4648 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
4649 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4650 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4651 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4652 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4653 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4654 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4655 enabled libvpx            && require_pkg_config "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version && {
4656     enabled libvpx_vp8_decoder && {
4657         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
4658             disable libvpx_vp8_decoder;
4659     }
4660     enabled libvpx_vp8_encoder && {
4661         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
4662             disable libvpx_vp8_encoder;
4663     }
4664     enabled libvpx_vp9_decoder && {
4665         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
4666             disable libvpx_vp9_decoder;
4667     }
4668     enabled libvpx_vp9_encoder && {
4669         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
4670             disable libvpx_vp9_encoder;
4671     }
4672     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
4673         die "libvpx enabled but no supported decoders found"
4674     fi
4675 }
4676 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4677 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4678 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4679                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4680                                die "ERROR: libx264 version must be >= 0.118."; } &&
4681                              { check_cpp_condition x264.h "X264_MPEG2" &&
4682                                enable libx262; }
4683 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
4684                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
4685                                die "ERROR: libx265 version must be >= 57."; }
4686 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4687 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4688 enabled mmal              && { check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4689                                { ! enabled cross_compile &&
4690                                  add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline &&
4691                                  add_ldflags -L/opt/vc/lib/ &&
4692                                  check_lib mmal interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host; } ||
4693                                die "ERROR: mmal not found" &&
4694                                check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"; }
4695 enabled omx_rpi           && { check_header OMX_Core.h ||
4696                                { ! enabled cross_compile && add_cflags -isystem/opt/vc/include/IL && check_header OMX_Core.h ; } ||
4697                                die "ERROR: OpenMAX IL headers not found"; }
4698 enabled omx               && { check_header OMX_Core.h || die "ERROR: OpenMAX IL headers not found"; }
4699 enabled openssl           && { { check_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
4700                                  check_pkg_config openssl openssl/ssl.h SSL_library_init; } && {
4701                                add_cflags $openssl_cflags && add_extralibs $openssl_extralibs; } ||
4702                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4703                                check_lib openssl openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4704                                check_lib openssl openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4705                                die "ERROR: openssl not found"; }
4706
4707 enabled gnutls            && check_lib gmp gmp.h mpz_export -lgmp
4708
4709 if enabled nvenc; then
4710     check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."
4711     check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6" ||
4712         die "ERROR: NVENC API version 5 or older is not supported"
4713 fi
4714
4715 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4716     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4717     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4718     enable sdl
4719 fi
4720
4721 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man
4722 ! disabled texi2html && check_cmd texi2html -version && enable texi2html || disable texi2html
4723
4724 check_header linux/fb.h
4725 check_header linux/videodev2.h
4726 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4727
4728 check_header AVFoundation/AVFoundation.h
4729
4730 check_header sys/videoio.h
4731
4732 check_lib user32 "windows.h winuser.h" GetShellWindow -luser32
4733 check_lib vfw32 "windows.h vfw.h" capCreateCaptureWindow -lvfw32
4734 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4735 # w32api 3.12 had it defined wrong
4736 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4737
4738 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4739 { check_header dev/bktr/ioctl_meteor.h &&
4740   check_header dev/bktr/ioctl_bt848.h; } ||
4741 { check_header machine/ioctl_meteor.h &&
4742   check_header machine/ioctl_bt848.h; } ||
4743 { check_header dev/video/meteor/ioctl_meteor.h &&
4744   check_header dev/video/bktr/ioctl_bt848.h; } ||
4745 check_header dev/ic/bt8xx.h
4746
4747 check_header sys/soundcard.h
4748 check_header soundcard.h
4749
4750 enabled_any alsa_indev alsa_outdev &&
4751     check_lib alsa alsa/asoundlib.h snd_pcm_htimestamp -lasound
4752
4753 enabled jack_indev && check_lib jack jack/jack.h jack_client_open -ljack &&
4754     check_func jack_port_get_latency_range -ljack
4755
4756 enabled_any sndio_indev sndio_outdev && check_lib sndio sndio.h sio_open -lsndio
4757
4758 if enabled libcdio; then
4759     check_lib libcdio "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4760     check_lib libcdio "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4761     die "ERROR: No usable libcdio/cdparanoia found"
4762 fi
4763
4764 if enabled libxcb; then
4765     check_pkg_config xcb-shape xcb/shape.h xcb_shape_rectangles || {
4766         enabled libxcb && die "ERROR: libxcb not found";
4767     } && enable libxcb
4768
4769     disabled libxcb_shm ||
4770         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
4771             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
4772         } && check_header sys/shm.h && enable libxcb_shm
4773
4774     disabled libxcb_xfixes ||
4775         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
4776             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
4777         } && enable libxcb_xfixes
4778
4779     add_cflags "$xcb_shape_cflags $xcb_shm_cflags $xcb_xfixes_cflags"
4780     add_extralibs "$xcb_shape_extralibs $xcb_shm_extralibs $xcb_xfixes_extralibs"
4781 fi
4782
4783 enabled dxva2 &&
4784     check_lib dxva2_lib windows.h CoTaskMemFree -lole32
4785
4786 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4787
4788 enabled vaapi &&
4789     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
4790     disable vaapi
4791
4792 enabled vaapi &&
4793     check_lib vaapi_drm "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm
4794
4795 enabled vaapi &&
4796     check_lib vaapi_x11 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11
4797
4798 enabled vdpau &&
4799     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4800     disable vdpau
4801
4802 enabled vdpau &&
4803     check_lib vdpau_x11 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11
4804
4805 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4806
4807 # add some useful compiler flags if supported
4808 check_cflags -Wdeclaration-after-statement
4809 check_cflags -Wall
4810 check_cflags -Wdisabled-optimization
4811 check_cflags -Wpointer-arith
4812 check_cflags -Wredundant-decls
4813 check_cflags -Wwrite-strings
4814 check_cflags -Wtype-limits
4815 check_cflags -Wundef
4816 check_cflags -Wmissing-prototypes
4817 check_cflags -Wstrict-prototypes
4818
4819 if enabled extra_warnings; then
4820     check_cflags -Wcast-qual
4821     check_cflags -Wextra
4822     check_cflags -Wpedantic
4823 fi
4824
4825 check_disable_warning(){
4826     warning_flag=-W${1#-Wno-}
4827     test_cflags $warning_flag && add_cflags $1
4828 }
4829
4830 check_disable_warning -Wno-parentheses
4831 check_disable_warning -Wno-switch
4832 check_disable_warning -Wno-format-zero-length
4833 check_disable_warning -Wno-pointer-sign
4834
4835 check_disable_warning_headers(){
4836     warning_flag=-W${1#-Wno-}
4837     test_cflags $warning_flag && add_cflags_headers $1
4838 }
4839
4840 check_disable_warning_headers -Wno-deprecated-declarations
4841 check_disable_warning_headers -Wno-unused-variable
4842
4843 check_objcflags -fobjc-arc && enable objc_arc
4844
4845 # add some linker flags
4846 check_ldflags -Wl,--warn-common
4847 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4848 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir