configure: fix linking with MSVC when using --disable-optimizations
[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     headers="$1"
1010     funcs="$2"
1011     shift 2
1012     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1013 }
1014
1015 check_pkg_config(){
1016     log check_pkg_config "$@"
1017     pkg_version="$1"
1018     pkg="${1%% *}"
1019     headers="$2"
1020     funcs="$3"
1021     shift 3
1022     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1023     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1024     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1025     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1026         set_safe "${pkg}_cflags"    $pkg_cflags &&
1027         set_safe "${pkg}_extralibs" $pkg_libs
1028 }
1029
1030 check_exec(){
1031     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1032 }
1033
1034 check_exec_crash(){
1035     log check_exec_crash "$@"
1036     code=$(cat)
1037
1038     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1039     # are safe but may not be available everywhere.  Thus we use
1040     # raise(SIGTERM) instead.  The check is run in a subshell so we
1041     # can redirect the "Terminated" message from the shell.  SIGBUS
1042     # is not defined by standard C so it is used conditionally.
1043
1044     (check_exec "$@") >> $logfile 2>&1 <<EOF
1045 #include <signal.h>
1046 static void sighandler(int sig){
1047     raise(SIGTERM);
1048 }
1049 int foo(void){
1050     $code
1051 }
1052 int (*func_ptr)(void) = foo;
1053 int main(void){
1054     signal(SIGILL, sighandler);
1055     signal(SIGFPE, sighandler);
1056     signal(SIGSEGV, sighandler);
1057 #ifdef SIGBUS
1058     signal(SIGBUS, sighandler);
1059 #endif
1060     return func_ptr();
1061 }
1062 EOF
1063 }
1064
1065 check_type(){
1066     log check_type "$@"
1067     headers=$1
1068     type=$2
1069     shift 2
1070     disable_safe "$type"
1071     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1072 }
1073
1074 check_struct(){
1075     log check_struct "$@"
1076     headers=$1
1077     struct=$2
1078     member=$3
1079     shift 3
1080     disable_safe "${struct}_${member}"
1081     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1082         enable_safe "${struct}_${member}"
1083 }
1084
1085 check_builtin(){
1086     log check_builtin "$@"
1087     name=$1
1088     headers=$2
1089     builtin=$3
1090     shift 3
1091     disable "$name"
1092     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1093 }
1094
1095 check_compile_assert(){
1096     log check_compile_assert "$@"
1097     name=$1
1098     headers=$2
1099     condition=$3
1100     shift 3
1101     disable "$name"
1102     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1103 }
1104
1105 require(){
1106     log require "$@"
1107     name_version="$1"
1108     headers="$2"
1109     func="$3"
1110     shift 3
1111     check_lib "$headers" $func "$@" || die "ERROR: $name_version not found"
1112 }
1113
1114 require_pkg_config(){
1115     log require_pkg_config "$@"
1116     pkg_version="$1"
1117     pkg="${1%% *}"
1118     check_pkg_config "$@" || die "ERROR: $pkg_version not found"
1119     add_cflags    $(get_safe "${pkg}_cflags")
1120     add_extralibs $(get_safe "${pkg}_extralibs")
1121 }
1122
1123 hostcc_e(){
1124     eval printf '%s\\n' $HOSTCC_E
1125 }
1126
1127 hostcc_o(){
1128     eval printf '%s\\n' $HOSTCC_O
1129 }
1130
1131 check_host_cc(){
1132     log check_host_cc "$@"
1133     cat > $TMPC
1134     log_file $TMPC
1135     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1136 }
1137
1138 check_host_cpp(){
1139     log check_host_cpp "$@"
1140     cat > $TMPC
1141     log_file $TMPC
1142     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1143 }
1144
1145 check_host_cppflags(){
1146     log check_host_cppflags "$@"
1147     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1148 int x;
1149 EOF
1150 }
1151
1152 check_host_cflags(){
1153     log check_host_cflags "$@"
1154     set -- $($host_cflags_filter "$@")
1155     check_host_cc "$@" <<EOF && append host_cflags "$@"
1156 int x;
1157 EOF
1158 }
1159
1160 check_host_cpp_condition(){
1161     log check_host_cpp_condition "$@"
1162     header=$1
1163     condition=$2
1164     shift 2
1165     check_host_cpp "$@" <<EOF
1166 #include <$header>
1167 #if !($condition)
1168 #error "unsatisfied condition: $condition"
1169 #endif
1170 EOF
1171 }
1172
1173 apply(){
1174     file=$1
1175     shift
1176     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1177 }
1178
1179 cp_if_changed(){
1180     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1181     mkdir -p "$(dirname $2)"
1182     cp -f "$1" "$2"
1183 }
1184
1185 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1186 # system-dependent things.
1187
1188 AVCODEC_COMPONENTS="
1189     bsfs
1190     decoders
1191     encoders
1192     hwaccels
1193     parsers
1194 "
1195
1196 AVDEVICE_COMPONENTS="
1197     indevs
1198     outdevs
1199 "
1200 AVFILTER_COMPONENTS="
1201     filters
1202 "
1203 AVFORMAT_COMPONENTS="
1204     demuxers
1205     muxers
1206     protocols
1207 "
1208
1209 AVRESAMPLE_COMPONENTS=""
1210 AVUTIL_COMPONENTS=""
1211
1212 COMPONENT_LIST="
1213     $AVCODEC_COMPONENTS
1214     $AVDEVICE_COMPONENTS
1215     $AVFILTER_COMPONENTS
1216     $AVFORMAT_COMPONENTS
1217     $AVRESAMPLE_COMPONENTS
1218     $AVUTIL_COMPONENTS
1219 "
1220
1221 EXAMPLE_LIST="
1222     decode_audio_example
1223     decode_video_example
1224     encode_audio_example
1225     encode_video_example
1226     filter_audio_example
1227     metadata_example
1228     output_example
1229     qsvdec_example
1230     transcode_aac_example
1231 "
1232
1233 HWACCEL_LIBRARY_NONFREE_LIST="
1234     cuda
1235     libnpp
1236 "
1237 HWACCEL_LIBRARY_LIST="
1238     $HWACCEL_LIBRARY_NONFREE_LIST
1239     d3d11va
1240     dxva2
1241     libmfx
1242     mmal
1243     nvenc
1244     omx
1245     vaapi
1246     vda
1247     vdpau
1248 "
1249
1250 EXTERNAL_LIBRARY_GPL_LIST="
1251     libcdio
1252     libx264
1253     libx265
1254     libxavs
1255     libxvid
1256 "
1257
1258 EXTERNAL_LIBRARY_NONFREE_LIST="
1259     libfaac
1260     libfdk_aac
1261     openssl
1262 "
1263
1264 EXTERNAL_LIBRARY_VERSION3_LIST="
1265     libopencore_amrnb
1266     libopencore_amrwb
1267     libvo_aacenc
1268     libvo_amrwbenc
1269 "
1270
1271 EXTERNAL_LIBRARY_LIST="
1272     $EXTERNAL_LIBRARY_GPL_LIST
1273     $EXTERNAL_LIBRARY_NONFREE_LIST
1274     $EXTERNAL_LIBRARY_VERSION3_LIST
1275     avisynth
1276     avxsynth
1277     bzlib
1278     frei0r
1279     gnutls
1280     libbs2b
1281     libdc1394
1282     libdcadec
1283     libfontconfig
1284     libfreetype
1285     libgsm
1286     libhdcd
1287     libilbc
1288     libkvazaar
1289     libmp3lame
1290     libopencv
1291     libopenh264
1292     libopenjpeg
1293     libopus
1294     libpulse
1295     librtmp
1296     libschroedinger
1297     libsnappy
1298     libspeex
1299     libtheora
1300     libtwolame
1301     libvorbis
1302     libvpx
1303     libwavpack
1304     libwebp
1305     libxcb
1306     libxcb_shm
1307     libxcb_xfixes
1308     zlib
1309 "
1310
1311 FEATURE_LIST="
1312     gray
1313     hardcoded_tables
1314     omx_rpi
1315     runtime_cpudetect
1316     safe_bitstream_reader
1317     shared
1318     small
1319     sram
1320     static
1321     swscale_alpha
1322 "
1323
1324 LIBRARY_LIST="
1325     avcodec
1326     avdevice
1327     avfilter
1328     avformat
1329     avresample
1330     avutil
1331     swscale
1332 "
1333
1334 LICENSE_LIST="
1335     gpl
1336     nonfree
1337     version3
1338 "
1339
1340 PROGRAM_LIST="
1341     avconv
1342     avplay
1343     avprobe
1344 "
1345
1346 SUBSYSTEM_LIST="
1347     dct
1348     doc
1349     error_resilience
1350     faan
1351     fft
1352     lsp
1353     lzo
1354     mdct
1355     network
1356     rdft
1357 "
1358
1359 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1360 CONFIG_LIST="
1361     $EXAMPLE_LIST
1362     $EXTERNAL_LIBRARY_LIST
1363     $HWACCEL_LIBRARY_LIST
1364     $FEATURE_LIST
1365     $LICENSE_LIST
1366     $LIBRARY_LIST
1367     $PROGRAM_LIST
1368     $SUBSYSTEM_LIST
1369     neon_clobber_test
1370     pic
1371     pod2man
1372     texi2html
1373     thumb
1374     valgrind_backtrace
1375     xmm_clobber_test
1376     $COMPONENT_LIST
1377 "
1378
1379 THREADS_LIST="
1380     pthreads
1381     w32threads
1382 "
1383
1384 ATOMICS_LIST="
1385     atomics_gcc
1386     atomics_suncc
1387     atomics_win32
1388 "
1389
1390 ARCH_LIST="
1391     aarch64
1392     alpha
1393     arm
1394     avr32
1395     avr32_ap
1396     avr32_uc
1397     bfin
1398     ia64
1399     m68k
1400     mips
1401     mips64
1402     parisc
1403     ppc
1404     ppc64
1405     s390
1406     sh4
1407     sparc
1408     sparc64
1409     tilegx
1410     tilepro
1411     tomi
1412     x86
1413     x86_32
1414     x86_64
1415 "
1416
1417 ARCH_EXT_LIST_ARM="
1418     armv5te
1419     armv6
1420     armv6t2
1421     armv8
1422     neon
1423     vfp
1424     vfpv3
1425 "
1426
1427 ARCH_EXT_LIST_X86_SIMD="
1428     amd3dnow
1429     amd3dnowext
1430     avx
1431     avx2
1432     fma3
1433     fma4
1434     mmx
1435     mmxext
1436     sse
1437     sse2
1438     sse3
1439     sse4
1440     sse42
1441     ssse3
1442     xop
1443 "
1444
1445 ARCH_EXT_LIST_PPC="
1446     altivec
1447     dcbzl
1448     ldbrx
1449     power8
1450     ppc4xx
1451     vsx
1452 "
1453
1454 ARCH_EXT_LIST_X86="
1455     $ARCH_EXT_LIST_X86_SIMD
1456     cpunop
1457     i686
1458 "
1459
1460 ARCH_EXT_LIST_MIPS="
1461     loongson
1462     mips32r1
1463     mips64r1
1464     mips32r2
1465     mips64r2
1466     mips32r6
1467     mips64r6
1468 "
1469
1470 ARCH_EXT_LIST="
1471     $ARCH_EXT_LIST_ARM
1472     $ARCH_EXT_LIST_MIPS
1473     $ARCH_EXT_LIST_PPC
1474     $ARCH_EXT_LIST_X86
1475     vis
1476 "
1477
1478 ARCH_FEATURES="
1479     aligned_stack
1480     fast_64bit
1481     fast_clz
1482     fast_cmov
1483     local_aligned_8
1484     local_aligned_16
1485     local_aligned_32
1486     simd_align_16
1487     simd_align_32
1488 "
1489
1490 BUILTIN_LIST="
1491     atomic_cas_ptr
1492     machine_rw_barrier
1493     MemoryBarrier
1494     mm_empty
1495     rdtsc
1496     sem_timedwait
1497     sync_val_compare_and_swap
1498 "
1499 HAVE_LIST_CMDLINE="
1500     inline_asm
1501     symver
1502     yasm
1503 "
1504
1505 HAVE_LIST_PUB="
1506     bigendian
1507     fast_unaligned
1508 "
1509
1510 HEADERS_LIST="
1511     AVFoundation_AVFoundation_h
1512     alsa_asoundlib_h
1513     altivec_h
1514     arpa_inet_h
1515     cdio_paranoia_h
1516     cdio_paranoia_paranoia_h
1517     d3d11_h
1518     dispatch_dispatch_h
1519     dev_bktr_ioctl_bt848_h
1520     dev_bktr_ioctl_meteor_h
1521     dev_ic_bt8xx_h
1522     dev_video_bktr_ioctl_bt848_h
1523     dev_video_meteor_ioctl_meteor_h
1524     direct_h
1525     dlfcn_h
1526     dxva_h
1527     gsm_h
1528     io_h
1529     mach_mach_time_h
1530     machine_ioctl_bt848_h
1531     machine_ioctl_meteor_h
1532     malloc_h
1533     poll_h
1534     sndio_h
1535     soundcard_h
1536     stdatomic_h
1537     sys_mman_h
1538     sys_param_h
1539     sys_resource_h
1540     sys_select_h
1541     sys_soundcard_h
1542     sys_time_h
1543     sys_un_h
1544     sys_videoio_h
1545     unistd_h
1546     valgrind_valgrind_h
1547     windows_h
1548     winsock2_h
1549 "
1550
1551 INTRINSICS_LIST="
1552     intrinsics_neon
1553 "
1554
1555 MATH_FUNCS="
1556     atanf
1557     atan2f
1558     cbrtf
1559     cosf
1560     exp2
1561     exp2f
1562     expf
1563     isinf
1564     isnan
1565     ldexpf
1566     llrint
1567     llrintf
1568     log2
1569     log2f
1570     log10f
1571     lrint
1572     lrintf
1573     powf
1574     rint
1575     round
1576     roundf
1577     sinf
1578     trunc
1579     truncf
1580 "
1581
1582 SYSTEM_FUNCS="
1583     aligned_malloc
1584     clock_gettime
1585     closesocket
1586     CommandLineToArgvW
1587     CoTaskMemFree
1588     CryptGenRandom
1589     dlopen
1590     fcntl
1591     flt_lim
1592     fork
1593     getaddrinfo
1594     gethrtime
1595     getopt
1596     GetProcessAffinityMask
1597     GetProcessMemoryInfo
1598     GetProcessTimes
1599     getrusage
1600     GetSystemTimeAsFileTime
1601     gettimeofday
1602     gmtime_r
1603     inet_aton
1604     isatty
1605     jack_port_get_latency_range
1606     LoadLibrary
1607     localtime_r
1608     mach_absolute_time
1609     MapViewOfFile
1610     memalign
1611     mkstemp
1612     mmap
1613     mprotect
1614     nanosleep
1615     posix_memalign
1616     sched_getaffinity
1617     SetConsoleTextAttribute
1618     setmode
1619     setrlimit
1620     Sleep
1621     strerror_r
1622     sysconf
1623     sysctl
1624     usleep
1625     VirtualAlloc
1626 "
1627
1628 TOOLCHAIN_FEATURES="
1629     as_dn_directive
1630     as_fpu_directive
1631     as_func
1632     as_object_arch
1633     asm_mod_q
1634     attribute_may_alias
1635     attribute_packed
1636     ebp_available
1637     ebx_available
1638     gnu_as
1639     ibm_asm
1640     inline_asm_labels
1641     pragma_deprecated
1642     symver_asm_label
1643     symver_gnu_asm
1644     vfp_args
1645     xform_asm
1646     xmm_clobbers
1647 "
1648
1649 TYPES_LIST="
1650     CONDITION_VARIABLE_Ptr
1651     socklen_t
1652     struct_addrinfo
1653     struct_group_source_req
1654     struct_ip_mreq_source
1655     struct_ipv6_mreq
1656     struct_pollfd
1657     struct_rusage_ru_maxrss
1658     struct_sockaddr_in6
1659     struct_sockaddr_sa_len
1660     struct_sockaddr_storage
1661     struct_v4l2_frmivalenum_discrete
1662 "
1663
1664 HAVE_LIST="
1665     $ARCH_EXT_LIST
1666     $(add_suffix _external $ARCH_EXT_LIST)
1667     $(add_suffix _inline   $ARCH_EXT_LIST)
1668     $ARCH_FEATURES
1669     $BUILTIN_LIST
1670     $HAVE_LIST_CMDLINE
1671     $HAVE_LIST_PUB
1672     $HEADERS_LIST
1673     $INTRINSICS_LIST
1674     $MATH_FUNCS
1675     $SYSTEM_FUNCS
1676     $THREADS_LIST
1677     $TOOLCHAIN_FEATURES
1678     $TYPES_LIST
1679     dos_paths
1680     dxva2_lib
1681     libc_msvcrt
1682     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1683     sdl
1684     section_data_rel_ro
1685     threads
1686     vaapi_drm
1687     vaapi_x11
1688     vdpau_x11
1689 "
1690
1691 # options emitted with CONFIG_ prefix but not available on the command line
1692 CONFIG_EXTRA="
1693     aandcttables
1694     ac3dsp
1695     audio_frame_queue
1696     audiodsp
1697     blockdsp
1698     bswapdsp
1699     cabac
1700     dirac_parse
1701     dvprofile
1702     faandct
1703     faanidct
1704     fdctdsp
1705     flacdsp
1706     fmtconvert
1707     g722dsp
1708     gmp
1709     golomb
1710     gplv3
1711     h263dsp
1712     h264chroma
1713     h264dsp
1714     h264parse
1715     h264pred
1716     h264qpel
1717     hevc_ps
1718     hpeldsp
1719     huffman
1720     huffyuvdsp
1721     huffyuvencdsp
1722     idctdsp
1723     iirfilter
1724     imdct15
1725     intrax8
1726     iso_media
1727     ividsp
1728     jpegtables
1729     libx262
1730     lgplv3
1731     lpc
1732     lzf
1733     me_cmp
1734     mpeg_er
1735     mpegaudio
1736     mpegaudiodsp
1737     mpegaudioheader
1738     mpegvideo
1739     mpegvideoenc
1740     mss34dsp
1741     pixblockdsp
1742     qpeldsp
1743     qsv
1744     qsvdec
1745     qsvenc
1746     rangecoder
1747     riffdec
1748     riffenc
1749     rtpdec
1750     rtpenc_chain
1751     rv34dsp
1752     sinewin
1753     snappy
1754     srtp
1755     startcode
1756     texturedsp
1757     texturedspenc
1758     tpeldsp
1759     vaapi_encode
1760     vc1dsp
1761     videodsp
1762     vp3dsp
1763     vp56dsp
1764     vp8dsp
1765     wma_freqs
1766     wmv2dsp
1767 "
1768
1769 CMDLINE_SELECT="
1770     $ARCH_EXT_LIST
1771     $CONFIG_LIST
1772     $HAVE_LIST_CMDLINE
1773     $THREADS_LIST
1774     asm
1775     cross_compile
1776     debug
1777     extra_warnings
1778     logging
1779     lto
1780     optimizations
1781     rpath
1782 "
1783
1784 PATHS_LIST="
1785     bindir
1786     datadir
1787     docdir
1788     incdir
1789     libdir
1790     mandir
1791     prefix
1792     shlibdir
1793 "
1794
1795 CMDLINE_SET="
1796     $PATHS_LIST
1797     ar
1798     arch
1799     as
1800     cc
1801     objcc
1802     cpu
1803     cross_prefix
1804     custom_allocator
1805     dep_cc
1806     env
1807     extra_version
1808     host_cc
1809     host_cflags
1810     host_extralibs
1811     host_ld
1812     host_ldflags
1813     host_os
1814     ld
1815     logfile
1816     malloc_prefix
1817     nm
1818     optflags
1819     pkg_config
1820     pkg_config_flags
1821     random_seed
1822     samples
1823     sysinclude
1824     sysroot
1825     target_exec
1826     target_os
1827     target_path
1828     target_samples
1829     toolchain
1830 "
1831
1832 CMDLINE_APPEND="
1833     extra_cflags
1834     extra_objcflags
1835     host_cppflags
1836 "
1837
1838 # code dependency declarations
1839
1840 # architecture extensions
1841
1842 armv5te_deps="arm"
1843 armv6_deps="arm"
1844 armv6t2_deps="arm"
1845 armv8_deps="aarch64"
1846 neon_deps_any="aarch64 arm"
1847 intrinsics_neon_deps="neon"
1848 vfp_deps_any="aarch64 arm"
1849 vfpv3_deps="vfp"
1850
1851 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1852
1853 altivec_deps="ppc"
1854 ppc4xx_deps="ppc"
1855 vsx_deps="altivec"
1856 power8_deps="vsx"
1857
1858 cpunop_deps="i686"
1859 x86_64_select="i686"
1860 x86_64_suggest="fast_cmov"
1861
1862 amd3dnow_deps="mmx"
1863 amd3dnowext_deps="amd3dnow"
1864 i686_deps="x86"
1865 mmx_deps="x86"
1866 mmxext_deps="mmx"
1867 sse_deps="mmxext"
1868 sse2_deps="sse"
1869 sse3_deps="sse2"
1870 ssse3_deps="sse3"
1871 sse4_deps="ssse3"
1872 sse42_deps="sse4"
1873 avx_deps="sse42"
1874 xop_deps="avx"
1875 fma3_deps="avx"
1876 fma4_deps="avx"
1877 avx2_deps="avx"
1878
1879 mmx_external_deps="yasm"
1880 mmx_inline_deps="inline_asm"
1881 mmx_suggest="mmx_external mmx_inline"
1882
1883 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1884     eval dep=\$${ext}_deps
1885     eval ${ext}_external_deps='"${dep}_external"'
1886     eval ${ext}_inline_deps='"${dep}_inline"'
1887     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1888 done
1889
1890 aligned_stack_if_any="aarch64 ppc x86"
1891 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1892 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1893 fast_unaligned_if_any="aarch64 ppc x86"
1894 simd_align_16_if_any="altivec neon sse"
1895 simd_align_32_if_any="avx"
1896
1897 # system capabilities
1898 symver_if_any="symver_asm_label symver_gnu_asm"
1899 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1900
1901 # threading support
1902 atomics_gcc_if="sync_val_compare_and_swap"
1903 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1904 atomics_win32_if="MemoryBarrier"
1905 atomics_native_if_any="$ATOMICS_LIST"
1906 w32threads_deps="atomics_native"
1907 threads_if_any="$THREADS_LIST"
1908
1909 # subsystems
1910 dct_select="rdft"
1911 dirac_parse_select="golomb"
1912 error_resilience_select="me_cmp"
1913 faandct_deps="faan fdctdsp"
1914 faanidct_deps="faan idctdsp"
1915 h264dsp_select="startcode"
1916 hevc_ps_select="golomb"
1917 intrax8_select="blockdsp idctdsp"
1918 mdct_select="fft"
1919 rdft_select="fft"
1920 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1921 mpeg_er_select="error_resilience"
1922 mpegaudio_select="mpegaudiodsp mpegaudioheader"
1923 mpegaudiodsp_select="dct"
1924 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1925 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1926 vc1dsp_select="h264chroma qpeldsp startcode"
1927
1928 # decoders / encoders
1929 aac_decoder_select="imdct15 mdct sinewin"
1930 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1931 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1932 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1933 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1934 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1935 adpcm_g722_decoder_select="g722dsp"
1936 adpcm_g722_encoder_select="g722dsp"
1937 aic_decoder_select="golomb idctdsp"
1938 alac_encoder_select="lpc"
1939 als_decoder_select="bswapdsp"
1940 amrnb_decoder_select="lsp"
1941 amrwb_decoder_select="lsp"
1942 amv_decoder_select="sp5x_decoder"
1943 ape_decoder_select="bswapdsp"
1944 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1945 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1946 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1947 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1948 atrac1_decoder_select="mdct sinewin"
1949 atrac3_decoder_select="mdct"
1950 atrac3p_decoder_select="mdct sinewin"
1951 bink_decoder_select="blockdsp hpeldsp"
1952 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1953 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1954 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1955 cllc_decoder_select="bswapdsp"
1956 comfortnoise_encoder_select="lpc"
1957 cook_decoder_select="audiodsp mdct sinewin"
1958 cscd_decoder_select="lzo"
1959 cscd_decoder_suggest="zlib"
1960 dca_decoder_select="fmtconvert mdct"
1961 dds_decoder_select="texturedsp"
1962 dnxhd_decoder_select="blockdsp idctdsp"
1963 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1964 dvvideo_decoder_select="dvprofile idctdsp"
1965 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1966 dxa_decoder_deps="zlib"
1967 dxv_decoder_select="lzf texturedsp"
1968 eac3_decoder_select="ac3_decoder"
1969 eac3_encoder_select="ac3_encoder"
1970 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1971 eatgq_decoder_select="aandcttables idctdsp"
1972 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
1973 exr_decoder_deps="zlib"
1974 ffv1_decoder_select="rangecoder"
1975 ffv1_encoder_select="rangecoder"
1976 ffvhuff_decoder_select="huffyuv_decoder"
1977 ffvhuff_encoder_select="huffyuv_encoder"
1978 fic_decoder_select="golomb"
1979 flac_decoder_select="flacdsp"
1980 flac_encoder_select="bswapdsp flacdsp lpc"
1981 flashsv_decoder_deps="zlib"
1982 flashsv_encoder_deps="zlib"
1983 flashsv2_decoder_deps="zlib"
1984 flv_decoder_select="h263_decoder"
1985 flv_encoder_select="h263_encoder"
1986 fourxm_decoder_select="blockdsp bswapdsp"
1987 fraps_decoder_select="bswapdsp huffman"
1988 g2m_decoder_deps="zlib"
1989 g2m_decoder_select="blockdsp idctdsp jpegtables"
1990 h261_decoder_select="mpeg_er mpegvideo"
1991 h261_encoder_select="aandcttables mpegvideoenc"
1992 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1993 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1994 h263i_decoder_select="h263_decoder"
1995 h263p_encoder_select="h263_encoder"
1996 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
1997 h264_decoder_suggest="error_resilience"
1998 hap_decoder_select="snappy texturedsp"
1999 hap_encoder_deps="libsnappy"
2000 hap_encoder_select="texturedspenc"
2001 hevc_decoder_select="bswapdsp cabac hevc_ps videodsp"
2002 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2003 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2004 iac_decoder_select="imc_decoder"
2005 imc_decoder_select="bswapdsp fft mdct sinewin"
2006 indeo3_decoder_select="hpeldsp"
2007 indeo4_decoder_select="ividsp"
2008 indeo5_decoder_select="ividsp"
2009 interplay_video_decoder_select="hpeldsp"
2010 jpegls_decoder_select="mjpeg_decoder"
2011 jv_decoder_select="blockdsp"
2012 lagarith_decoder_select="huffyuvdsp"
2013 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2014 magicyuv_decoder_select="huffyuvdsp"
2015 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2016 metasound_decoder_select="lsp mdct sinewin"
2017 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2018 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2019 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2020 mjpegb_decoder_select="mjpeg_decoder"
2021 mlp_decoder_select="mlp_parser"
2022 motionpixels_decoder_select="bswapdsp"
2023 mp1_decoder_select="mpegaudio"
2024 mp1float_decoder_select="mpegaudio"
2025 mp2_decoder_select="mpegaudio"
2026 mp2float_decoder_select="mpegaudio"
2027 mp3_decoder_select="mpegaudio"
2028 mp3adu_decoder_select="mpegaudio"
2029 mp3adufloat_decoder_select="mpegaudio"
2030 mp3float_decoder_select="mpegaudio"
2031 mp3on4_decoder_select="mpegaudio"
2032 mp3on4float_decoder_select="mpegaudio"
2033 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2034 mpc8_decoder_select="mpegaudiodsp"
2035 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2036 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2037 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2038 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2039 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2040 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2041 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2042 mpeg4_encoder_select="h263_encoder"
2043 msa1_decoder_select="mss34dsp"
2044 msmpeg4v1_decoder_select="h263_decoder"
2045 msmpeg4v2_decoder_select="h263_decoder"
2046 msmpeg4v2_encoder_select="h263_encoder"
2047 msmpeg4v3_decoder_select="h263_decoder"
2048 msmpeg4v3_encoder_select="h263_encoder"
2049 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2050 mts2_decoder_select="mss34dsp"
2051 mxpeg_decoder_select="mjpeg_decoder"
2052 nellymoser_decoder_select="mdct sinewin"
2053 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2054 nuv_decoder_select="idctdsp lzo"
2055 on2avc_decoder_select="mdct"
2056 opus_decoder_deps="avresample"
2057 opus_decoder_select="imdct15"
2058 png_decoder_deps="zlib"
2059 png_encoder_deps="zlib"
2060 png_encoder_select="huffyuvencdsp"
2061 prores_decoder_select="idctdsp"
2062 prores_encoder_select="fdctdsp"
2063 qcelp_decoder_select="lsp"
2064 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2065 ra_144_encoder_select="audio_frame_queue lpc"
2066 ralf_decoder_select="golomb"
2067 rscc_decoder_deps="zlib"
2068 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2069 rv10_encoder_select="h263_encoder"
2070 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2071 rv20_encoder_select="h263_encoder"
2072 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2073 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2074 screenpresso_decoder_deps="zlib"
2075 sipr_decoder_select="lsp"
2076 sp5x_decoder_select="mjpeg_decoder"
2077 svq1_decoder_select="hpeldsp"
2078 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2079 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2080 svq3_decoder_suggest="zlib"
2081 tak_decoder_select="audiodsp"
2082 tdsc_decoder_deps="zlib"
2083 tdsc_decoder_select="mjpeg_decoder"
2084 theora_decoder_select="vp3_decoder"
2085 thp_decoder_select="mjpeg_decoder"
2086 tiff_decoder_suggest="zlib"
2087 tiff_encoder_suggest="zlib"
2088 truehd_decoder_select="mlp_decoder"
2089 truemotion2_decoder_select="bswapdsp"
2090 truespeech_decoder_select="bswapdsp"
2091 tscc_decoder_deps="zlib"
2092 txd_decoder_select="texturedsp"
2093 twinvq_decoder_select="mdct lsp sinewin"
2094 utvideo_decoder_select="bswapdsp"
2095 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2096 vble_decoder_select="huffyuvdsp"
2097 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2098 vc1image_decoder_select="vc1_decoder"
2099 vorbis_decoder_select="mdct"
2100 vorbis_encoder_select="mdct"
2101 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2102 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2103 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2104 vp6a_decoder_select="vp6_decoder"
2105 vp6f_decoder_select="vp6_decoder"
2106 vp7_decoder_select="h264pred videodsp vp8dsp"
2107 vp8_decoder_select="h264pred videodsp vp8dsp"
2108 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2109 webp_decoder_select="vp8_decoder"
2110 wmapro_decoder_select="mdct sinewin wma_freqs"
2111 wmav1_decoder_select="mdct sinewin wma_freqs"
2112 wmav1_encoder_select="mdct sinewin wma_freqs"
2113 wmav2_decoder_select="mdct sinewin wma_freqs"
2114 wmav2_encoder_select="mdct sinewin wma_freqs"
2115 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2116 wmv1_decoder_select="h263_decoder"
2117 wmv1_encoder_select="h263_encoder"
2118 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2119 wmv2_encoder_select="h263_encoder wmv2dsp"
2120 wmv3_decoder_select="vc1_decoder"
2121 wmv3image_decoder_select="wmv3_decoder"
2122 zerocodec_decoder_deps="zlib"
2123 zlib_decoder_deps="zlib"
2124 zlib_encoder_deps="zlib"
2125 zmbv_decoder_deps="zlib"
2126 zmbv_encoder_deps="zlib"
2127
2128 # hardware accelerators
2129 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2130 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2131 dxva2_lib_deps="dxva2"
2132 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2133 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2134
2135 h263_vaapi_hwaccel_deps="vaapi"
2136 h263_vaapi_hwaccel_select="h263_decoder"
2137 h264_d3d11va_hwaccel_deps="d3d11va"
2138 h264_d3d11va_hwaccel_select="h264_decoder"
2139 h264_dxva2_hwaccel_deps="dxva2"
2140 h264_dxva2_hwaccel_select="h264_decoder"
2141 h264_mmal_hwaccel_deps="mmal"
2142 h264_qsv_hwaccel_deps="libmfx"
2143 h264_vaapi_hwaccel_deps="vaapi"
2144 h264_vaapi_hwaccel_select="h264_decoder"
2145 h264_vda_hwaccel_deps="vda"
2146 h264_vda_hwaccel_select="h264_decoder"
2147 h264_vda_old_hwaccel_deps="vda"
2148 h264_vda_old_hwaccel_select="h264_decoder"
2149 h264_vdpau_hwaccel_deps="vdpau"
2150 h264_vdpau_hwaccel_select="h264_decoder"
2151 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2152 hevc_d3d11va_hwaccel_select="hevc_decoder"
2153 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2154 hevc_dxva2_hwaccel_select="hevc_decoder"
2155 hevc_qsv_hwaccel_deps="libmfx"
2156 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2157 hevc_vdpau_hwaccel_select="hevc_decoder"
2158 mpeg1_vdpau_hwaccel_deps="vdpau"
2159 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2160 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2161 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2162 mpeg2_dxva2_hwaccel_deps="dxva2"
2163 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2164 mpeg2_mmal_hwaccel_deps="mmal"
2165 mpeg2_qsv_hwaccel_deps="libmfx"
2166 mpeg2_vaapi_hwaccel_deps="vaapi"
2167 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2168 mpeg2_vdpau_hwaccel_deps="vdpau"
2169 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2170 mpeg4_vaapi_hwaccel_deps="vaapi"
2171 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2172 mpeg4_vdpau_hwaccel_deps="vdpau"
2173 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2174 vc1_d3d11va_hwaccel_deps="d3d11va"
2175 vc1_d3d11va_hwaccel_select="vc1_decoder"
2176 vc1_dxva2_hwaccel_deps="dxva2"
2177 vc1_dxva2_hwaccel_select="vc1_decoder"
2178 vc1_mmal_hwaccel_deps="mmal"
2179 vc1_qsv_hwaccel_deps="libmfx"
2180 vc1_vaapi_hwaccel_deps="vaapi"
2181 vc1_vaapi_hwaccel_select="vc1_decoder"
2182 vc1_vdpau_hwaccel_deps="vdpau"
2183 vc1_vdpau_hwaccel_select="vc1_decoder"
2184 vp8_qsv_hwaccel_deps="libmfx"
2185 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2186 vp8_vaapi_hwaccel_select="vp8_decoder"
2187 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2188 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2189 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2190 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2191
2192 # hardware-accelerated codecs
2193 nvenc_deps_any="dlopen LoadLibrary"
2194 nvenc_extralibs='$ldl'
2195 omx_deps="dlopen pthreads"
2196 omx_extralibs='$ldl'
2197 omx_rpi_select="omx"
2198 qsvdec_select="qsv"
2199 qsvenc_select="qsv"
2200 vaapi_encode_deps="vaapi"
2201
2202 hwupload_cuda_filter_deps="cuda"
2203 scale_npp_filter_deps="cuda libnpp"
2204
2205 h264_mmal_decoder_deps="mmal"
2206 h264_nvenc_encoder_deps="nvenc"
2207 h264_omx_encoder_deps="omx"
2208 h264_qsv_decoder_deps="libmfx"
2209 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2210 h264_qsv_encoder_deps="libmfx"
2211 h264_qsv_encoder_select="qsvenc"
2212 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2213 h264_vaapi_encoder_select="vaapi_encode golomb"
2214 hevc_nvenc_encoder_deps="nvenc"
2215 hevc_qsv_decoder_deps="libmfx"
2216 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2217 hevc_qsv_encoder_deps="libmfx"
2218 hevc_qsv_encoder_select="hevc_ps qsvenc"
2219 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2220 hevc_vaapi_encoder_select="vaapi_encode golomb"
2221 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2222 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2223 mpeg2_mmal_decoder_deps="mmal"
2224 mpeg2_qsv_decoder_deps="libmfx"
2225 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2226 mpeg2_qsv_encoder_deps="libmfx"
2227 mpeg2_qsv_encoder_select="qsvenc"
2228 mpeg4_omx_encoder_deps="omx"
2229 vc1_mmal_decoder_deps="mmal"
2230 vc1_qsv_decoder_deps="libmfx"
2231 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2232 vp8_qsv_decoder_deps="libmfx"
2233 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2234
2235 nvenc_h264_encoder_select="h264_nvenc_encoder"
2236 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2237
2238 # parsers
2239 h264_parser_select="golomb h264dsp h264parse"
2240 hevc_parser_select="hevc_ps"
2241 mpegaudio_parser_select="mpegaudioheader"
2242 mpegvideo_parser_select="mpegvideo"
2243 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2244 vc1_parser_select="vc1dsp"
2245
2246 # bitstream_filters
2247 mjpeg2jpeg_bsf_select="jpegtables"
2248
2249 # external libraries
2250 avisynth_deps="LoadLibrary"
2251 avxsynth_deps="dlopen"
2252 avisynth_demuxer_deps_any="avisynth avxsynth"
2253 avisynth_demuxer_select="riffdec"
2254 libdcadec_decoder_deps="libdcadec"
2255 libfaac_encoder_deps="libfaac"
2256 libfaac_encoder_select="audio_frame_queue"
2257 libfdk_aac_decoder_deps="libfdk_aac"
2258 libfdk_aac_encoder_deps="libfdk_aac"
2259 libfdk_aac_encoder_select="audio_frame_queue"
2260 libgsm_decoder_deps="libgsm"
2261 libgsm_encoder_deps="libgsm"
2262 libgsm_ms_decoder_deps="libgsm"
2263 libgsm_ms_encoder_deps="libgsm"
2264 libilbc_decoder_deps="libilbc"
2265 libilbc_encoder_deps="libilbc"
2266 libkvazaar_encoder_deps="libkvazaar"
2267 libmp3lame_encoder_deps="libmp3lame"
2268 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2269 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2270 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2271 libopencore_amrnb_encoder_select="audio_frame_queue"
2272 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2273 libopenh264_decoder_deps="libopenh264"
2274 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2275 libopenh264_encoder_deps="libopenh264"
2276 libopenjpeg_decoder_deps="libopenjpeg"
2277 libopenjpeg_encoder_deps="libopenjpeg"
2278 libopus_decoder_deps="libopus"
2279 libopus_encoder_deps="libopus"
2280 libopus_encoder_select="audio_frame_queue"
2281 libschroedinger_decoder_deps="libschroedinger"
2282 libschroedinger_encoder_deps="libschroedinger"
2283 libspeex_decoder_deps="libspeex"
2284 libspeex_encoder_deps="libspeex"
2285 libspeex_encoder_select="audio_frame_queue"
2286 libtheora_encoder_deps="libtheora"
2287 libtwolame_encoder_deps="libtwolame"
2288 libvo_aacenc_encoder_deps="libvo_aacenc"
2289 libvo_aacenc_encoder_select="audio_frame_queue"
2290 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2291 libvorbis_encoder_deps="libvorbis"
2292 libvorbis_encoder_select="audio_frame_queue"
2293 libvpx_vp8_decoder_deps="libvpx"
2294 libvpx_vp8_encoder_deps="libvpx"
2295 libvpx_vp9_decoder_deps="libvpx"
2296 libvpx_vp9_encoder_deps="libvpx"
2297 libwavpack_encoder_deps="libwavpack"
2298 libwavpack_encoder_select="audio_frame_queue"
2299 libwebp_encoder_deps="libwebp"
2300 libx262_encoder_deps="libx262"
2301 libx264_encoder_deps="libx264"
2302 libx265_encoder_deps="libx265"
2303 libxavs_encoder_deps="libxavs"
2304 libxvid_encoder_deps="libxvid mkstemp"
2305
2306 # demuxers / muxers
2307 ac3_demuxer_select="ac3_parser"
2308 asf_demuxer_select="riffdec"
2309 asf_muxer_select="riffenc"
2310 asf_stream_muxer_select="asf_muxer"
2311 avi_demuxer_select="iso_media riffdec"
2312 avi_muxer_select="riffenc"
2313 caf_demuxer_select="iso_media riffdec"
2314 dash_muxer_select="mp4_muxer"
2315 dirac_demuxer_select="dirac_parser"
2316 dv_demuxer_select="dvprofile"
2317 dv_muxer_select="dvprofile"
2318 dxa_demuxer_select="riffdec"
2319 eac3_demuxer_select="ac3_parser"
2320 f4v_muxer_select="mov_muxer"
2321 flac_demuxer_select="flac_parser"
2322 hds_muxer_select="flv_muxer"
2323 hls_muxer_select="mpegts_muxer"
2324 ipod_muxer_select="mov_muxer"
2325 ismv_muxer_select="mov_muxer"
2326 matroska_audio_muxer_select="matroska_muxer"
2327 matroska_demuxer_select="iso_media riffdec"
2328 matroska_demuxer_suggest="bzlib lzo zlib"
2329 matroska_muxer_select="iso_media riffenc"
2330 mmf_muxer_select="riffenc"
2331 mov_demuxer_select="iso_media riffdec"
2332 mov_demuxer_suggest="zlib"
2333 mov_muxer_select="iso_media riffenc rtpenc_chain"
2334 mp3_demuxer_select="mpegaudio_parser"
2335 mp3_muxer_select="mpegaudioheader"
2336 mp4_muxer_select="mov_muxer"
2337 mpegts_demuxer_select="iso_media"
2338 mpegts_muxer_select="adts_muxer latm_muxer"
2339 mpegtsraw_demuxer_select="mpegts_demuxer"
2340 mxf_d10_muxer_select="mxf_muxer"
2341 nut_muxer_select="riffenc"
2342 nuv_demuxer_select="riffdec"
2343 oga_muxer_select="ogg_muxer"
2344 ogg_demuxer_select="dirac_parse"
2345 opus_muxer_select="ogg_muxer"
2346 psp_muxer_select="mov_muxer"
2347 rtp_demuxer_select="sdp_demuxer"
2348 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2349 rtsp_demuxer_select="http_protocol rtpdec"
2350 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2351 sap_demuxer_select="sdp_demuxer"
2352 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2353 sdp_demuxer_select="rtpdec"
2354 smoothstreaming_muxer_select="ismv_muxer"
2355 spdif_muxer_select="aac_parser"
2356 spx_muxer_select="ogg_muxer"
2357 swf_demuxer_suggest="zlib"
2358 tak_demuxer_select="tak_parser"
2359 tg2_muxer_select="mov_muxer"
2360 tgp_muxer_select="mov_muxer"
2361 w64_demuxer_select="wav_demuxer"
2362 wav_demuxer_select="riffdec"
2363 wav_muxer_select="riffenc"
2364 webm_muxer_select="iso_media riffenc"
2365 webm_muxer_suggest="libopus_encoder libvorbis_encoder libvpx_vp8_encoder libvpx_vp9_encoder"
2366 wtv_demuxer_select="mpegts_demuxer riffdec"
2367 xmv_demuxer_select="riffdec"
2368 xwma_demuxer_select="riffdec"
2369
2370 # indevs / outdevs
2371 alsa_indev_deps="alsa"
2372 alsa_outdev_deps="alsa"
2373 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2374 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2375 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2376 dv1394_indev_deps="dv1394"
2377 dv1394_indev_select="dv_demuxer"
2378 fbdev_indev_deps="linux_fb_h"
2379 jack_indev_deps="jack"
2380 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2381 libcdio_indev_deps="libcdio"
2382 libdc1394_indev_deps="libdc1394"
2383 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2384 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2385 pulse_indev_deps="libpulse"
2386 sndio_indev_deps="sndio"
2387 sndio_outdev_deps="sndio"
2388 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2389 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2390 vfwcap_indev_extralibs="-lavicap32"
2391 xcbgrab_indev_deps="libxcb"
2392
2393 # protocols
2394 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2395 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2396 ffrtmpcrypt_protocol_select="tcp_protocol"
2397 ffrtmphttp_protocol_deps="!librtmp_protocol"
2398 ffrtmphttp_protocol_select="http_protocol"
2399 gopher_protocol_select="network"
2400 http_protocol_select="tcp_protocol"
2401 httpproxy_protocol_select="tcp_protocol"
2402 https_protocol_select="tls_protocol"
2403 icecast_protocol_select="http_protocol"
2404 librtmp_protocol_deps="librtmp"
2405 librtmpe_protocol_deps="librtmp"
2406 librtmps_protocol_deps="librtmp"
2407 librtmpt_protocol_deps="librtmp"
2408 librtmpte_protocol_deps="librtmp"
2409 mmsh_protocol_select="http_protocol"
2410 mmst_protocol_select="network"
2411 rtmp_protocol_deps="!librtmp_protocol"
2412 rtmp_protocol_select="tcp_protocol"
2413 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2414 rtmps_protocol_deps="!librtmp_protocol"
2415 rtmps_protocol_select="tls_protocol"
2416 rtmpt_protocol_select="ffrtmphttp_protocol"
2417 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2418 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2419 rtp_protocol_select="udp_protocol"
2420 sctp_protocol_deps="struct_sctp_event_subscribe"
2421 sctp_protocol_select="network"
2422 srtp_protocol_select="rtp_protocol srtp"
2423 tcp_protocol_select="network"
2424 tls_gnutls_protocol_deps="gnutls"
2425 tls_gnutls_protocol_select="tcp_protocol"
2426 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2427 tls_openssl_protocol_select="tcp_protocol"
2428 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2429 udp_protocol_select="network"
2430 unix_protocol_deps="sys_un_h"
2431 unix_protocol_select="network"
2432
2433 # filters
2434 asyncts_filter_deps="avresample"
2435 blackframe_filter_deps="gpl"
2436 boxblur_filter_deps="gpl"
2437 bs2b_filter_deps="libbs2b"
2438 cropdetect_filter_deps="gpl"
2439 deinterlace_qsv_filter_deps="libmfx"
2440 deinterlace_vaapi_filter_deps="vaapi"
2441 delogo_filter_deps="gpl"
2442 drawtext_filter_deps="libfreetype"
2443 frei0r_filter_deps="frei0r dlopen"
2444 frei0r_filter_extralibs='$ldl'
2445 frei0r_src_filter_deps="frei0r dlopen"
2446 frei0r_src_filter_extralibs='$ldl'
2447 hdcd_filter_deps="libhdcd"
2448 hqdn3d_filter_deps="gpl"
2449 interlace_filter_deps="gpl"
2450 movie_filter_deps="avcodec avformat"
2451 ocv_filter_deps="libopencv"
2452 resample_filter_deps="avresample"
2453 scale_filter_deps="swscale"
2454 scale_qsv_filter_deps="libmfx"
2455 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2456
2457 # examples
2458 decode_audio_example_deps="avcodec avutil"
2459 decode_video_example_deps="avcodec avutil"
2460 encode_audio_example_deps="avcodec avutil"
2461 encode_video_example_deps="avcodec avutil"
2462 filter_audio_example_deps="avfilter avutil"
2463 metadata_example_deps="avformat avutil"
2464 output_example_deps="avcodec avformat avresample avutil swscale"
2465 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2466 transcode_aac_example_deps="avcodec avformat avresample"
2467
2468 # libraries, in linking order
2469 avcodec_deps="avutil"
2470 avcodec_select="null_bsf"
2471 avdevice_deps="avformat avcodec avutil"
2472 avfilter_deps="avutil"
2473 avformat_deps="avcodec avutil"
2474 avresample_deps="avutil"
2475 swscale_deps="avutil"
2476
2477 # programs
2478 avconv_deps="avcodec avfilter avformat avresample swscale"
2479 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2480                fps_filter null_filter resample_filter scale_filter
2481                trim_filter"
2482 avplay_deps="avcodec avfilter avformat avresample sdl"
2483 avplay_extralibs='$sdl_extralibs'
2484 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2485 avprobe_deps="avcodec avformat"
2486
2487 # documentation
2488 pod2man_deps="doc"
2489 texi2html_deps="doc"
2490
2491 # default parameters
2492
2493 logfile="config.log"
2494
2495 # installation paths
2496 prefix_default="/usr/local"
2497 bindir_default='${prefix}/bin'
2498 datadir_default='${prefix}/share/avconv'
2499 docdir_default='${prefix}/share/doc/libav'
2500 incdir_default='${prefix}/include'
2501 libdir_default='${prefix}/lib'
2502 mandir_default='${prefix}/share/man'
2503 shlibdir_default="$libdir_default"
2504
2505 # toolchain
2506 ar_default="ar"
2507 cc_default="gcc"
2508 host_cc_default="gcc"
2509 ln_s="ln -s -f"
2510 nm_default="nm -g"
2511 objformat="elf"
2512 pkg_config_default=pkg-config
2513 ranlib="ranlib"
2514 strip="strip"
2515 version_script='--version-script'
2516 yasmexe="yasm"
2517
2518 # machine
2519 arch_default=$(uname -m)
2520 cpu="generic"
2521 intrinsics="none"
2522
2523 # OS
2524 target_os_default=$(tolower $(uname -s))
2525 host_os=$target_os_default
2526
2527 # configurable options
2528 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2529
2530 enable asm
2531 enable debug
2532 enable doc
2533 enable faan faandct faanidct
2534 enable optimizations
2535 enable safe_bitstream_reader
2536 enable static
2537 enable swscale_alpha
2538 enable valgrind_backtrace
2539
2540 # By default, enable only those hwaccels that have no external dependencies.
2541 enable d3d11va dxva2 vda vdpau
2542
2543 # build settings
2544 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2545 LIBPREF="lib"
2546 LIBSUF=".a"
2547 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2548 SLIBPREF="lib"
2549 SLIBSUF=".so"
2550 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2551 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2552 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2553 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2554 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2555 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2556 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2557
2558 asflags_filter=echo
2559 cflags_filter=echo
2560 ldflags_filter=echo
2561
2562 AS_C='-c'
2563 AS_O='-o $@'
2564 CC_C='-c'
2565 CC_E='-E -o $@'
2566 CC_O='-o $@'
2567 OBJCC_C='-c'
2568 OBJCC_E='-E -o $@'
2569 OBJCC_O='-o $@'
2570 LD_O='-o $@'
2571 LD_LIB='-l%'
2572 LD_PATH='-L'
2573 HOSTCC_C='-c'
2574 HOSTCC_E='-E -o $@'
2575 HOSTCC_O='-o $@'
2576 HOSTLD_O='-o $@'
2577
2578 host_extralibs='-lm'
2579 host_cflags_filter=echo
2580 host_ldflags_filter=echo
2581
2582 target_path='$(CURDIR)'
2583
2584 # since the object filename is not given with the -MM flag, the compiler
2585 # is only able to print the basename, and we must add the path ourselves
2586 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2587 DEPFLAGS='-MM'
2588
2589 # find source path
2590 if test -f configure; then
2591     source_path=.
2592 else
2593     source_path=$(cd $(dirname "$0"); pwd)
2594     echo "$source_path" | grep -q '[[:blank:]]' &&
2595         die "Out of tree builds are impossible with whitespace in source path."
2596     test -e "$source_path/config.h" &&
2597         die "Out of tree builds are impossible with config.h in source dir."
2598 fi
2599
2600 for v in "$@"; do
2601     r=${v#*=}
2602     l=${v%"$r"}
2603     r=$(sh_quote "$r")
2604     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2605 done
2606
2607 find_things(){
2608     thing=$1
2609     pattern=$2
2610     file=$source_path/$3
2611     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2612 }
2613
2614 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2615 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2616 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2617 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2618 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2619 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2620 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2621 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2622 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2623
2624 find_things_extern(){
2625     thing=$1
2626     pattern=$2
2627     file=$source_path/$3
2628     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2629 }
2630
2631 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2632 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2633
2634 ALL_COMPONENTS="
2635     $BSF_LIST
2636     $DECODER_LIST
2637     $DEMUXER_LIST
2638     $ENCODER_LIST
2639     $FILTER_LIST
2640     $HWACCEL_LIST
2641     $INDEV_LIST
2642     $MUXER_LIST
2643     $OUTDEV_LIST
2644     $PARSER_LIST
2645     $PROTOCOL_LIST
2646 "
2647
2648 for n in $COMPONENT_LIST; do
2649     v=$(toupper ${n%s})_LIST
2650     eval enable \$$v
2651     eval ${n}_if_any="\$$v"
2652 done
2653
2654 enable $ARCH_EXT_LIST
2655
2656 die_unknown(){
2657     echo "Unknown option \"$1\"."
2658     echo "See $0 --help for available options."
2659     exit 1
2660 }
2661
2662 print_3_columns() {
2663     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2664 }
2665
2666 show_list() {
2667     suffix=_$1
2668     shift
2669     echo $* | sed s/$suffix//g | print_3_columns
2670     exit 0
2671 }
2672
2673 rand_list(){
2674     IFS=', '
2675     set -- $*
2676     unset IFS
2677     for thing; do
2678         comp=${thing%:*}
2679         prob=${thing#$comp}
2680         prob=${prob#:}
2681         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2682         echo "prob ${prob:-0.5}"
2683         printf '%s\n' $comp
2684     done
2685 }
2686
2687 do_random(){
2688     action=$1
2689     shift
2690     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2691     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2692 }
2693
2694 for opt do
2695     optval="${opt#*=}"
2696     case "$opt" in
2697         --extra-ldflags=*)
2698             add_ldflags $optval
2699         ;;
2700         --extra-ldexeflags=*)
2701             add_ldexeflags $optval
2702         ;;
2703         --extra-libs=*)
2704             add_extralibs $optval
2705         ;;
2706         --disable-devices)
2707             disable $INDEV_LIST $OUTDEV_LIST
2708         ;;
2709         --enable-debug=*)
2710             debuglevel="$optval"
2711         ;;
2712         --disable-programs)
2713             disable $PROGRAM_LIST
2714         ;;
2715         --disable-everything)
2716             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2717         ;;
2718         --disable-all)
2719             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2720             disable $LIBRARY_LIST $PROGRAM_LIST doc
2721         ;;
2722         --enable-random|--disable-random)
2723             action=${opt%%-random}
2724             do_random ${action#--} $COMPONENT_LIST
2725         ;;
2726         --enable-random=*|--disable-random=*)
2727             action=${opt%%-random=*}
2728             do_random ${action#--} $optval
2729         ;;
2730         --enable-*=*|--disable-*=*)
2731             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2732             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2733             eval list=\$$(toupper $thing)_LIST
2734             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2735             $action $(filter "$name" $list)
2736         ;;
2737         --enable-avserver|--disable-avserver*)
2738             warn "avserver has been removed, the ${opt} option is only"\
2739                  "provided for compatibility and will be removed in the future"
2740         ;;
2741         --enable-?*|--disable-?*)
2742             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2743             if is_in $option $COMPONENT_LIST; then
2744                 test $action = disable && action=unset
2745                 eval $action \$$(toupper ${option%s})_LIST
2746             elif is_in $option $CMDLINE_SELECT; then
2747                 $action $option
2748             else
2749                 die_unknown $opt
2750             fi
2751         ;;
2752         --list-*)
2753             NAME="${opt#--list-}"
2754             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2755             NAME=${NAME%s}
2756             eval show_list $NAME \$$(toupper $NAME)_LIST
2757         ;;
2758         --help|-h) show_help
2759         ;;
2760         --quiet|-q) quiet=yes
2761         ;;
2762         *)
2763             optname="${opt%%=*}"
2764             optname="${optname#--}"
2765             optname=$(echo "$optname" | sed 's/-/_/g')
2766             if is_in $optname $CMDLINE_SET; then
2767                 eval $optname='$optval'
2768             elif is_in $optname $CMDLINE_APPEND; then
2769                 append $optname "$optval"
2770             else
2771                 die_unknown $opt
2772             fi
2773         ;;
2774     esac
2775 done
2776
2777 for e in $env; do
2778     eval "export $e"
2779 done
2780
2781 disabled logging && logfile=/dev/null
2782
2783 # Die early if licensing-related configure options are incompatible.
2784 die_license_disabled() {
2785     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2786 }
2787
2788 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2789 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2790 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2791
2792 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2793
2794 # Disable all the library-specific components if the library itself
2795 # is disabled, see AVCODEC_LIST and following _LIST variables.
2796
2797 disable_components(){
2798     disabled ${1} && disable $(
2799         eval components="\$$(toupper ${1})_COMPONENTS"
2800         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2801     )
2802 }
2803
2804 map 'disable_components $v' $LIBRARY_LIST
2805
2806 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2807 set >> $logfile
2808
2809 case "$toolchain" in
2810     *-asan)
2811         cc_default="${toolchain%-asan}"
2812         add_cflags  -fsanitize=address
2813         add_ldflags -fsanitize=address
2814     ;;
2815     *-msan)
2816         cc_default="${toolchain%-msan}"
2817         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2818         add_ldflags -fsanitize=memory
2819     ;;
2820     *-tsan)
2821         cc_default="${toolchain%-tsan}"
2822         add_cflags  -fsanitize=thread -fPIE
2823         add_ldflags -fsanitize=thread -pie
2824         case "$toolchain" in
2825             gcc-tsan)
2826                 add_cflags  -fPIC
2827                 add_ldflags -fPIC
2828                 ;;
2829         esac
2830     ;;
2831     *-usan)
2832         cc_default="${toolchain%-usan}"
2833         add_cflags  -fsanitize=undefined
2834         add_ldflags -fsanitize=undefined
2835         case "$toolchain" in
2836             clang-usan)
2837                 add_cflags -O1
2838                 ;;
2839         esac
2840     ;;
2841     valgrind-*)
2842         target_exec_default="valgrind"
2843         case "$toolchain" in
2844             valgrind-massif)
2845                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2846                 ;;
2847             valgrind-memcheck)
2848                 target_exec_args="--track-origins=yes --leak-check=full"
2849                 ;;
2850         esac
2851     ;;
2852     msvc)
2853         # Check whether the current MSVC version needs the C99 converter.
2854         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2855         # support enough of C99 to build libav. Default to the new
2856         # behaviour if the regexp was unable to match anything, since this
2857         # successfully parses the version number of existing supported
2858         # versions that require the converter (MSVC 2010 and 2012).
2859         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2860         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2861             cc_default="cl"
2862         else
2863             cc_default="c99wrap cl"
2864         fi
2865         ld_default="$source_path/compat/windows/mslink"
2866         nm_default="dumpbin -symbols"
2867         ar_default="lib"
2868         case "$arch" in
2869         arm*)
2870             as_default="armasm"
2871             ;;
2872         esac
2873         target_os_default="win32"
2874         # Use a relative path for TMPDIR. This makes sure all the
2875         # ffconf temp files are written with a relative path, avoiding
2876         # issues with msys/win32 path conversion for MSVC parameters
2877         # such as -Fo<file> or -out:<file>.
2878         TMPDIR=.
2879     ;;
2880     icl)
2881         cc_default="icl"
2882         ld_default="xilink"
2883         nm_default="dumpbin -symbols"
2884         ar_default="xilib"
2885         target_os_default="win32"
2886         TMPDIR=.
2887     ;;
2888     gcov)
2889         add_cflags  -fprofile-arcs -ftest-coverage
2890         add_ldflags -fprofile-arcs -ftest-coverage
2891     ;;
2892     llvm-cov)
2893         add_cflags -fprofile-arcs -ftest-coverage
2894         add_ldflags --coverage
2895     ;;
2896     hardened)
2897         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2898         add_cflags   -fno-strict-overflow -fstack-protector-all
2899         add_ldflags  -Wl,-z,relro -Wl,-z,now
2900     ;;
2901     ?*)
2902         die "Unknown toolchain $toolchain"
2903     ;;
2904 esac
2905
2906 test -n "$cross_prefix" && enable cross_compile
2907
2908 if enabled cross_compile; then
2909     test -n "$arch" && test -n "$target_os" ||
2910         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
2911 fi
2912
2913 ar_default="${cross_prefix}${ar_default}"
2914 cc_default="${cross_prefix}${cc_default}"
2915 occ_default="${cross_prefix}${occ_default}"
2916 nm_default="${cross_prefix}${nm_default}"
2917 pkg_config_default="${cross_prefix}${pkg_config_default}"
2918 ranlib="${cross_prefix}${ranlib}"
2919 strip="${cross_prefix}${strip}"
2920
2921 sysinclude_default="${sysroot}/usr/include"
2922
2923 set_default arch cc pkg_config sysinclude target_exec target_os
2924 enabled cross_compile || host_cc_default=$cc
2925 set_default host_cc
2926
2927 if ! $pkg_config --version >/dev/null 2>&1; then
2928     warn "$pkg_config not found, library detection may fail."
2929     pkg_config=false
2930 fi
2931
2932 exesuf() {
2933     case $1 in
2934         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2935     esac
2936 }
2937
2938 EXESUF=$(exesuf $target_os)
2939 HOSTEXESUF=$(exesuf $host_os)
2940
2941 # set temporary file name
2942 : ${TMPDIR:=$TEMPDIR}
2943 : ${TMPDIR:=$TMP}
2944 : ${TMPDIR:=/tmp}
2945
2946 if ! check_cmd mktemp -u XXXXXX; then
2947     # simple replacement for missing mktemp
2948     # NOT SAFE FOR GENERAL USE
2949     mktemp(){
2950         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2951     }
2952 fi
2953
2954 tmpfile(){
2955     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2956         (set -C; exec > $tmp) 2>/dev/null ||
2957         die "Unable to create temporary file in $TMPDIR."
2958     append TMPFILES $tmp
2959     eval $1=$tmp
2960 }
2961
2962 trap 'rm -f -- $TMPFILES' EXIT
2963
2964 tmpfile TMPASM .asm
2965 tmpfile TMPC   .c
2966 tmpfile TMPE   $EXESUF
2967 tmpfile TMPH   .h
2968 tmpfile TMPO   .o
2969 tmpfile TMPS   .S
2970 tmpfile TMPSH  .sh
2971 tmpfile TMPV   .ver
2972
2973 unset -f mktemp
2974
2975 chmod +x $TMPE
2976
2977 # make sure we can execute files in $TMPDIR
2978 cat > $TMPSH 2>> $logfile <<EOF
2979 #! /bin/sh
2980 EOF
2981 chmod +x $TMPSH >> $logfile 2>&1
2982 if ! $TMPSH >> $logfile 2>&1; then
2983     cat <<EOF
2984 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2985 variable to another directory and make sure that it is not mounted noexec.
2986 EOF
2987     die "Sanity test failed."
2988 fi
2989
2990 armasm_flags(){
2991     for flag; do
2992         case $flag in
2993             # Filter out MSVC cl.exe options from cflags that shouldn't
2994             # be passed to gas-preprocessor
2995             -M[TD]*)                                            ;;
2996             *)                  echo $flag                      ;;
2997         esac
2998    done
2999 }
3000
3001 ccc_flags(){
3002     for flag; do
3003         case $flag in
3004             -std=c99)           echo -c99                       ;;
3005             -mcpu=*)            echo -arch ${flag#*=}           ;;
3006             -mieee)             echo -ieee                      ;;
3007             -O*|-fast)          echo $flag                      ;;
3008             -fno-math-errno)    echo -assume nomath_errno       ;;
3009             -g)                 echo -g3                        ;;
3010             -Wall)              echo -msg_enable level2         ;;
3011             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3012             -Wl,*)              echo $flag                      ;;
3013             -f*|-W*)                                            ;;
3014             *)                  echo $flag                      ;;
3015         esac
3016    done
3017 }
3018
3019 cparser_flags(){
3020     for flag; do
3021         case $flag in
3022             -Wno-switch)             echo -Wno-switch-enum ;;
3023             -Wno-format-zero-length) ;;
3024             -Wdisabled-optimization) ;;
3025             -Wno-pointer-sign)       echo -Wno-other ;;
3026             *)                       echo $flag ;;
3027         esac
3028     done
3029 }
3030
3031 msvc_common_flags(){
3032     for flag; do
3033         case $flag in
3034             # In addition to specifying certain flags under the compiler
3035             # specific filters, they must be specified here as well or else the
3036             # generic catch all at the bottom will print the original flag.
3037             -Wall)                ;;
3038             -std=c99)             ;;
3039             # Common flags
3040             -fomit-frame-pointer) ;;
3041             -g)                   echo -Z7 ;;
3042             -fno-math-errno)      ;;
3043             -fno-common)          ;;
3044             -fno-signed-zeros)    ;;
3045             -fPIC)                ;;
3046             -mthumb)              ;;
3047             -march=*)             ;;
3048             -lz)                  echo zlib.lib ;;
3049             -lavicap32)           echo vfw32.lib user32.lib ;;
3050             -lx264)               echo libx264.lib ;;
3051             -l*)                  echo ${flag#-l}.lib ;;
3052             -L*)                  echo -libpath:${flag#-L} ;;
3053             *)                    echo $flag ;;
3054         esac
3055     done
3056 }
3057
3058 msvc_flags(){
3059     msvc_common_flags "$@"
3060     for flag; do
3061         case $flag in
3062             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3063                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3064                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3065                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3066         esac
3067     done
3068 }
3069
3070 icl_flags(){
3071     msvc_common_flags "$@"
3072     for flag; do
3073         case $flag in
3074             # Despite what Intel's documentation says -Wall, which is supported
3075             # on Windows, does enable remarks so disable them here.
3076             -Wall)                echo $flag -Qdiag-disable:remark ;;
3077             -std=c99)             echo -Qstd=c99 ;;
3078         esac
3079     done
3080 }
3081
3082 pgi_flags(){
3083     for flag; do
3084         case $flag in
3085             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3086             -fomit-frame-pointer) echo -Mnoframe ;;
3087             -g)                   echo -gopt ;;
3088             *)                    echo $flag ;;
3089         esac
3090     done
3091 }
3092
3093 suncc_flags(){
3094     for flag; do
3095         case $flag in
3096             -march=*|-mcpu=*)
3097                 case "${flag#*=}" in
3098                     native)                   echo -xtarget=native       ;;
3099                     v9|niagara)               echo -xarch=sparc          ;;
3100                     ultrasparc)               echo -xarch=sparcvis       ;;
3101                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3102                     i586|pentium)             echo -xchip=pentium        ;;
3103                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3104                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3105                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3106                     pentium4*)          echo -xtarget=pentium4           ;;
3107                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3108                     *-sse3)             echo -xarch=sse3                 ;;
3109                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3110                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3111                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3112                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3113                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3114                     k8|opteron|athlon64|athlon-fx)
3115                                                echo -xarch=sse2a         ;;
3116                     athlon*)                   echo -xarch=pentium_proa  ;;
3117                 esac
3118                 ;;
3119             -std=c99)             echo -xc99              ;;
3120             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3121             -fPIC)                echo -KPIC -xcode=pic32 ;;
3122             -W*,*)                echo $flag              ;;
3123             -f*-*|-W*|-mimpure-text)                      ;;
3124             -shared)              echo -G                 ;;
3125             *)                    echo $flag              ;;
3126         esac
3127     done
3128 }
3129
3130 tms470_flags(){
3131     for flag; do
3132         case $flag in
3133             -march=*|-mcpu=*)
3134                 case "${flag#*=}" in
3135                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3136                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3137                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3138                     armv6*|arm11*)          echo -mv=6   ;;
3139                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3140                                             echo -mv=5e  ;;
3141                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3142                 esac
3143                 ;;
3144             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3145             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3146             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3147             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3148             -msoft-float)   echo --float_support=vfplib       ;;
3149             -O[0-3]|-mf=*)  echo $flag                        ;;
3150             -g)             echo -g -mn                       ;;
3151             -pds=*)         echo $flag                        ;;
3152             -D*|-I*)        echo $flag                        ;;
3153             --gcc|--abi=*)  echo $flag                        ;;
3154             -me)            echo $flag                        ;;
3155         esac
3156     done
3157 }
3158
3159 probe_cc(){
3160     pfx=$1
3161     _cc=$2
3162
3163     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3164     unset _ld_o _ldflags _ld_lib _ld_path
3165     unset _depflags _DEPCMD _DEPFLAGS
3166     _flags_filter=echo
3167
3168     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3169         _type=llvm_gcc
3170         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3171         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3172         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3173         _cflags_speed='-O3'
3174         _cflags_size='-Os'
3175     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3176         _type=gcc
3177         gcc_version=$($_cc --version | head -n1)
3178         gcc_basever=$($_cc -dumpversion)
3179         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3180         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3181         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3182         if ! $_cc -dumpversion | grep -q '^2\.'; then
3183             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3184         fi
3185         _cflags_speed='-O3'
3186         _cflags_size='-Os'
3187     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3188         _type=icc
3189         _ident=$($_cc --version | head -n1)
3190         _depflags='-MMD'
3191         _cflags_speed='-O3'
3192         _cflags_size='-Os'
3193         _cflags_noopt='-O1'
3194     elif $_cc -v 2>&1 | grep -q xlc; then
3195         _type=xlc
3196         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3197         _cflags_speed='-O5'
3198         _cflags_size='-O5 -qcompact'
3199     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3200         _type=ccc
3201         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3202         _DEPFLAGS='-M'
3203         _cflags_speed='-fast'
3204         _cflags_size='-O1'
3205         _flags_filter=ccc_flags
3206     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3207         test -d "$sysroot" || die "No valid sysroot specified."
3208         _type=armcc
3209         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3210         armcc_conf="$PWD/armcc.conf"
3211         $_cc --arm_linux_configure                 \
3212              --arm_linux_config_file="$armcc_conf" \
3213              --configure_sysroot="$sysroot"        \
3214              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3215              die "Error creating armcc configuration file."
3216         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3217         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3218         as_default="${cross_prefix}gcc"
3219         _depflags='-MMD'
3220         _cflags_speed='-O3'
3221         _cflags_size='-Os'
3222     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3223         _type=tms470
3224         _ident=$($_cc -version | head -n1 | tr -s ' ')
3225         _flags='--gcc --abi=eabi -me'
3226         _cc_e='-ppl -fe=$@'
3227         _cc_o='-fe=$@'
3228         _depflags='-ppa -ppd=$(@:.o=.d)'
3229         _cflags_speed='-O3 -mf=5'
3230         _cflags_size='-O3 -mf=2'
3231         _flags_filter=tms470_flags
3232     elif $_cc -v 2>&1 | grep -q clang; then
3233         _type=clang
3234         _ident=$($_cc --version 2>/dev/null | head -n1)
3235         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3236         _cflags_speed='-O3'
3237         _cflags_size='-Os'
3238     elif $_cc -V 2>&1 | grep -q Sun; then
3239         _type=suncc
3240         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3241         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3242         _DEPFLAGS='-xM1 -xc99'
3243         _ldflags='-std=c99'
3244         _cflags_speed='-O5'
3245         _cflags_size='-O5 -xspace'
3246         _flags_filter=suncc_flags
3247     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3248         _type=pathscale
3249         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3250         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3251         _cflags_speed='-O2'
3252         _cflags_size='-Os'
3253         _flags_filter='filter_out -Wdisabled-optimization'
3254     elif $_cc -v 2>&1 | grep -q Open64; then
3255         _type=open64
3256         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3257         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3258         _cflags_speed='-O2'
3259         _cflags_size='-Os'
3260         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3261     elif $_cc -V 2>&1 | grep -q Portland; then
3262         _type=pgi
3263         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3264         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3265         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3266         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3267         _cflags_noopt="-O1"
3268         _flags_filter=pgi_flags
3269     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3270         _type=armasm
3271         _ident=$($_cc | head -n1)
3272         # 4509: "This form of conditional instruction is deprecated"
3273         _flags="-nologo -ignore 4509"
3274         _flags_filter=armasm_flags
3275     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3276         _type=msvc
3277         _ident=$($_cc 2>&1 | head -n1)
3278         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3279         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3280         _cflags_speed="-O2"
3281         _cflags_size="-O1"
3282         _cflags_noopt="-O1"
3283         if $_cc -nologo- 2>&1 | grep -q Linker; then
3284             _ld_o='-out:$@'
3285         else
3286             _ld_o='-Fe$@'
3287         fi
3288         _cc_o='-Fo$@'
3289         _cc_e='-P -Fi$@'
3290         _flags_filter=msvc_flags
3291         _ld_lib='lib%.a'
3292         _ld_path='-libpath:'
3293         _flags='-nologo'
3294     elif $_cc 2>&1 | grep -q Intel; then
3295         _type=icl
3296         _ident=$($_cc 2>&1 | head -n1)
3297         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3298         # Not only is O3 broken on 13.x+ but it is slower on all previous
3299         # versions (tested) as well.
3300         _cflags_speed="-O2"
3301         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3302         if $_cc 2>&1 | grep -q Linker; then
3303             _ld_o='-out:$@'
3304         else
3305             _ld_o='-Fe$@'
3306         fi
3307         _cc_o='-Fo$@'
3308         _cc_e='-P'
3309         _flags_filter=icl_flags
3310         _ld_lib='lib%.a'
3311         _ld_path='-libpath:'
3312         # -Qdiag-error to make icl error when seeing certain unknown arguments
3313         _flags='-nologo -Qdiag-error:4044,10157'
3314         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3315         # with MSVC which enables it by default.
3316         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3317     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3318         # lld can emulate multiple different linkers; in ms link.exe mode,
3319         # the -? parameter gives the help output which contains an identifyable
3320         # string, while it gives an error in other modes.
3321         _type=lld-link
3322         # The link.exe mode doesn't have a switch for getting the version,
3323         # but we can force it back to gnu mode and get the version from there.
3324         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3325         _ld_o='-out:$@'
3326         _flags_filter=msvc_flags
3327         _ld_lib='lib%.a'
3328         _ld_path='-libpath:'
3329     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3330         _type=cparser
3331         _ident=$($_cc --version | head -n1)
3332         _depflags='-MMD'
3333         _cflags_speed='-O4'
3334         _cflags_size='-O2'
3335         _flags_filter=cparser_flags
3336     fi
3337
3338     eval ${pfx}_type=\$_type
3339     eval ${pfx}_ident=\$_ident
3340 }
3341
3342 set_ccvars(){
3343     eval ${1}_C=\${_cc_c-\${${1}_C}}
3344     eval ${1}_E=\${_cc_e-\${${1}_E}}
3345     eval ${1}_O=\${_cc_o-\${${1}_O}}
3346
3347     if [ -n "$_depflags" ]; then
3348         eval ${1}_DEPFLAGS=\$_depflags
3349     else
3350         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3351         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3352         eval DEP${1}FLAGS=\$_flags
3353     fi
3354 }
3355
3356 probe_cc cc "$cc"
3357 cflags_filter=$_flags_filter
3358 cflags_speed=$_cflags_speed
3359 cflags_size=$_cflags_size
3360 cflags_noopt=$_cflags_noopt
3361 add_cflags $_flags $_cflags
3362 cc_ldflags=$_ldflags
3363 set_ccvars CC
3364
3365 probe_cc hostcc "$host_cc"
3366 host_cflags_filter=$_flags_filter
3367 add_host_cflags  $_flags $_cflags
3368 set_ccvars HOSTCC
3369
3370 test -n "$cc_type" && enable $cc_type ||
3371     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3372
3373 : ${as_default:=$cc}
3374 : ${objcc_default:=$cc}
3375 : ${dep_cc_default:=$cc}
3376 : ${ld_default:=$cc}
3377 : ${host_ld_default:=$host_cc}
3378 set_default ar as objcc dep_cc ld host_ld
3379
3380 probe_cc as "$as"
3381 asflags_filter=$_flags_filter
3382 add_asflags $_flags $_cflags
3383 set_ccvars AS
3384
3385 probe_cc objcc "$objcc"
3386 objcflags_filter=$_flags_filter
3387 add_objcflags $_flags $_cflags
3388 set_ccvars OBJC
3389
3390 probe_cc ld "$ld"
3391 ldflags_filter=$_flags_filter
3392 add_ldflags $_flags $_ldflags
3393 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3394 LD_O=${_ld_o-$LD_O}
3395 LD_LIB=${_ld_lib-$LD_LIB}
3396 LD_PATH=${_ld_path-$LD_PATH}
3397
3398 probe_cc hostld "$host_ld"
3399 host_ldflags_filter=$_flags_filter
3400 add_host_ldflags $_flags $_ldflags
3401 HOSTLD_O=${_ld_o-$HOSTLD_O}
3402
3403 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3404     probe_cc depcc "$dep_cc"
3405     CCDEP=${_DEPCMD:-$DEPCMD}
3406     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3407     DEPCCFLAGS=$_flags
3408 fi
3409
3410 if $ar 2>&1 | grep -q Microsoft; then
3411     arflags="-nologo"
3412     ar_o='-out:$@'
3413 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3414     arflags="rq"
3415     ar_o='$@'
3416 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3417     arflags='-Xany -r -c'
3418     ar_o='$@'
3419 else
3420     arflags="rc"
3421     ar_o='$@'
3422 fi
3423
3424 add_cflags $extra_cflags
3425 add_objcflags $extra_objcflags
3426 add_asflags $extra_cflags
3427
3428 if test -n "$sysroot"; then
3429     case "$cc_type" in
3430         gcc|llvm_gcc|clang)
3431             add_cppflags --sysroot="$sysroot"
3432             add_ldflags --sysroot="$sysroot"
3433         ;;
3434         tms470)
3435             add_cppflags -I"$sysinclude"
3436             add_ldflags  --sysroot="$sysroot"
3437         ;;
3438     esac
3439 fi
3440
3441 if test "$cpu" = host; then
3442     enabled cross_compile &&
3443         die "--cpu=host makes no sense when cross-compiling."
3444
3445     case "$cc_type" in
3446         gcc|llvm_gcc)
3447             check_native(){
3448                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3449                 sed -n "/cc1.*$1=/{
3450                             s/.*$1=\\([^ ]*\\).*/\\1/
3451                             p
3452                             q
3453                         }" $TMPE
3454             }
3455             cpu=$(check_native -march || check_native -mcpu)
3456         ;;
3457     esac
3458
3459     test "${cpu:-host}" = host &&
3460         die "--cpu=host not supported with compiler $cc"
3461 fi
3462
3463 # Deal with common $arch aliases
3464 case "$arch" in
3465     aarch64|arm64)
3466         arch="aarch64"
3467     ;;
3468     arm*)
3469         arch="arm"
3470     ;;
3471     mips*|IP*)
3472         case "$arch" in
3473         *el)
3474             add_cppflags -EL
3475             add_ldflags -EL
3476         ;;
3477         *eb)
3478             add_cppflags -EB
3479             add_ldflags -EB
3480         ;;
3481         esac
3482         arch="mips"
3483     ;;
3484     parisc*|hppa*)
3485         arch="parisc"
3486     ;;
3487     "Power Macintosh"|ppc*|powerpc*)
3488         arch="ppc"
3489     ;;
3490     s390|s390x)
3491         arch="s390"
3492     ;;
3493     sh4|sh)
3494         arch="sh4"
3495     ;;
3496     sun4u|sparc*)
3497         arch="sparc"
3498     ;;
3499     tilegx|tile-gx)
3500         arch="tilegx"
3501     ;;
3502     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3503         arch="x86"
3504     ;;
3505 esac
3506
3507 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3508 enable $arch
3509
3510 # Add processor-specific flags
3511 if enabled aarch64; then
3512
3513     case $cpu in
3514         armv*)
3515             cpuflags="-march=$cpu"
3516         ;;
3517         *)
3518             cpuflags="-mcpu=$cpu"
3519         ;;
3520     esac
3521
3522 elif enabled alpha; then
3523
3524     cpuflags="-mcpu=$cpu"
3525
3526 elif enabled arm; then
3527
3528     check_arm_arch() {
3529         check_cpp_condition stddef.h \
3530             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3531             $cpuflags
3532     }
3533
3534     probe_arm_arch() {
3535         if   check_arm_arch 4;        then echo armv4
3536         elif check_arm_arch 4T;       then echo armv4t
3537         elif check_arm_arch 5;        then echo armv5
3538         elif check_arm_arch 5E;       then echo armv5e
3539         elif check_arm_arch 5T;       then echo armv5t
3540         elif check_arm_arch 5TE;      then echo armv5te
3541         elif check_arm_arch 5TEJ;     then echo armv5te
3542         elif check_arm_arch 6;        then echo armv6
3543         elif check_arm_arch 6J;       then echo armv6j
3544         elif check_arm_arch 6K;       then echo armv6k
3545         elif check_arm_arch 6Z;       then echo armv6z
3546         elif check_arm_arch 6ZK;      then echo armv6zk
3547         elif check_arm_arch 6T2;      then echo armv6t2
3548         elif check_arm_arch 7;        then echo armv7
3549         elif check_arm_arch 7A  7_A;  then echo armv7-a
3550         elif check_arm_arch 7S;       then echo armv7-a
3551         elif check_arm_arch 7R  7_R;  then echo armv7-r
3552         elif check_arm_arch 7M  7_M;  then echo armv7-m
3553         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3554         elif check_arm_arch 8A  8_A;  then echo armv8-a
3555         fi
3556     }
3557
3558     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3559
3560     case $cpu in
3561         armv*)
3562             cpuflags="-march=$cpu"
3563             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3564         ;;
3565         *)
3566             cpuflags="-mcpu=$cpu"
3567             case $cpu in
3568                 cortex-a*)                               subarch=armv7a  ;;
3569                 cortex-r*)                               subarch=armv7r  ;;
3570                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3571                 arm11*)                                  subarch=armv6   ;;
3572                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3573                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3574                 *)                             subarch=$(probe_arm_arch) ;;
3575             esac
3576         ;;
3577     esac
3578
3579     case "$subarch" in
3580         armv5t*)    enable fast_clz                ;;
3581         armv[6-8]*) enable fast_clz fast_unaligned ;;
3582     esac
3583
3584 elif enabled avr32; then
3585
3586     case $cpu in
3587         ap7[02]0[0-2])
3588             subarch="avr32_ap"
3589             cpuflags="-mpart=$cpu"
3590         ;;
3591         ap)
3592             subarch="avr32_ap"
3593             cpuflags="-march=$cpu"
3594         ;;
3595         uc3[ab]*)
3596             subarch="avr32_uc"
3597             cpuflags="-mcpu=$cpu"
3598         ;;
3599         uc)
3600             subarch="avr32_uc"
3601             cpuflags="-march=$cpu"
3602         ;;
3603     esac
3604
3605 elif enabled bfin; then
3606
3607     cpuflags="-mcpu=$cpu"
3608
3609 elif enabled mips; then
3610
3611     cpuflags="-march=$cpu"
3612
3613 elif enabled ppc; then
3614
3615     disable ldbrx
3616
3617     case $(tolower $cpu) in
3618         601|ppc601|powerpc601)
3619             cpuflags="-mcpu=601"
3620             disable altivec
3621         ;;
3622         603*|ppc603*|powerpc603*)
3623             cpuflags="-mcpu=603"
3624             disable altivec
3625         ;;
3626         604*|ppc604*|powerpc604*)
3627             cpuflags="-mcpu=604"
3628             disable altivec
3629         ;;
3630         g3|75*|ppc75*|powerpc75*)
3631             cpuflags="-mcpu=750"
3632             disable altivec
3633         ;;
3634         g4|745*|ppc745*|powerpc745*)
3635             cpuflags="-mcpu=7450"
3636             disable vsx
3637         ;;
3638         74*|ppc74*|powerpc74*)
3639             cpuflags="-mcpu=7400"
3640             disable vsx
3641         ;;
3642         g5|970|ppc970|powerpc970)
3643             cpuflags="-mcpu=970"
3644             disable vsx
3645         ;;
3646         power[3-6]*)
3647             cpuflags="-mcpu=$cpu"
3648             disable vsx
3649         ;;
3650         power[7-8]*)
3651             cpuflags="-mcpu=$cpu"
3652             enable ldbrx
3653         ;;
3654         cell)
3655             cpuflags="-mcpu=cell"
3656             enable ldbrx
3657             disable vsx
3658         ;;
3659         e500mc)
3660             cpuflags="-mcpu=e500mc"
3661             disable altivec
3662         ;;
3663         e500v2)
3664             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3665             disable altivec
3666             disable dcbzl
3667         ;;
3668         e500)
3669             cpuflags="-mcpu=8540 -mhard-float"
3670             disable altivec
3671             disable dcbzl
3672         ;;
3673     esac
3674
3675 elif enabled sparc; then
3676
3677     case $cpu in
3678         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3679             cpuflags="-mcpu=$cpu"
3680         ;;
3681         ultrasparc*|niagara[234])
3682             cpuflags="-mcpu=$cpu"
3683         ;;
3684     esac
3685
3686 elif enabled x86; then
3687
3688     case $cpu in
3689         i[345]86|pentium)
3690             cpuflags="-march=$cpu"
3691             disable i686
3692             disable mmx
3693         ;;
3694         # targets that do NOT support nopl and conditional mov (cmov)
3695         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3696             cpuflags="-march=$cpu"
3697             disable i686
3698         ;;
3699         # targets that do support nopl and conditional mov (cmov)
3700         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3701             cpuflags="-march=$cpu"
3702             enable i686
3703             enable fast_cmov
3704         ;;
3705         # targets that do support conditional mov but on which it's slow
3706         pentium4|pentium4m|prescott|nocona)
3707             cpuflags="-march=$cpu"
3708             enable i686
3709             disable fast_cmov
3710         ;;
3711     esac
3712
3713 fi
3714
3715 if [ "$cpu" != generic ]; then
3716     add_cflags  $cpuflags
3717     add_asflags $cpuflags
3718     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3719 fi
3720
3721 # compiler sanity check
3722 check_exec <<EOF
3723 int main(void){ return 0; }
3724 EOF
3725 if test "$?" != 0; then
3726     echo "$cc is unable to create an executable file."
3727     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3728         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3729         echo "Only do this if you know what cross compiling means."
3730     fi
3731     die "C compiler test failed."
3732 fi
3733
3734 add_cppflags -D_ISOC99_SOURCE
3735
3736 # some compilers silently accept -std=c11, so we also need to check that the
3737 # version macro is defined properly
3738 if test_cflags_cpp -std=c11 "__STDC_VERSION__ >= 201112L"; then
3739     add_cflags -std=c11
3740 else
3741     check_cflags -std=c99
3742 fi
3743
3744 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3745 #include <stdlib.h>
3746 EOF
3747 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3748 #include <stdlib.h>
3749 EOF
3750
3751 add_host_cppflags -D_ISOC99_SOURCE
3752 check_host_cflags -std=c99
3753 check_host_cflags -Wall
3754 check_host_cflags -O3
3755
3756 check_64bit(){
3757     arch32=$1
3758     arch64=$2
3759     expr=$3
3760     check_code cc "" "int test[2*($expr) - 1]" &&
3761         subarch=$arch64 || subarch=$arch32
3762 }
3763
3764 case "$arch" in
3765     aarch64|alpha|ia64)
3766         spic=$shared
3767     ;;
3768     mips)
3769         check_64bit mips mips64 '_MIPS_SIM > 1'
3770         spic=$shared
3771     ;;
3772     parisc)
3773         check_64bit parisc parisc64 'sizeof(void *) > 4'
3774         spic=$shared
3775     ;;
3776     ppc)
3777         check_64bit ppc ppc64 'sizeof(void *) > 4'
3778         spic=$shared
3779     ;;
3780     s390)
3781         check_64bit s390 s390x 'sizeof(void *) > 4'
3782         spic=$shared
3783     ;;
3784     sparc)
3785         check_64bit sparc sparc64 'sizeof(void *) > 4'
3786         spic=$shared
3787     ;;
3788     x86)
3789         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3790         if test "$subarch" = "x86_64"; then
3791             spic=$shared
3792         fi
3793     ;;
3794 esac
3795
3796 enable $subarch
3797 enabled spic && enable_weak pic
3798
3799 # OS specific
3800 case $target_os in
3801     aix)
3802         SHFLAGS=-shared
3803         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3804         enabled shared && add_ldflags -Wl,-brtl
3805         ;;
3806     android)
3807         disable symver
3808         enable section_data_rel_ro
3809         SLIB_INSTALL_NAME='$(SLIBNAME)'
3810         SLIB_INSTALL_LINKS=
3811         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3812         ;;
3813     haiku)
3814         prefix_default="/boot/common"
3815         network_extralibs="-lnetwork"
3816         host_extralibs=
3817         ;;
3818     sunos)
3819         SHFLAGS='-shared -Wl,-h,$$(@F)'
3820         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3821         network_extralibs="-lsocket -lnsl"
3822         # When using suncc to build, the Solaris linker will mark
3823         # an executable with each instruction set encountered by
3824         # the Solaris assembler.  As our libraries contain their own
3825         # guards for processor-specific code, instead suppress
3826         # generation of the HWCAPS ELF section on Solaris x86 only.
3827         enabled_all suncc x86 &&
3828             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3829             add_ldflags -Wl,-M,mapfile
3830         nm_default='nm -P -g'
3831         version_script='-M'
3832         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3833         ;;
3834     netbsd)
3835         disable symver
3836         oss_indev_extralibs="-lossaudio"
3837         oss_outdev_extralibs="-lossaudio"
3838         ;;
3839     openbsd|bitrig)
3840         disable symver
3841         SHFLAGS='-shared'
3842         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3843         SLIB_INSTALL_LINKS=
3844         oss_indev_extralibs="-lossaudio"
3845         oss_outdev_extralibs="-lossaudio"
3846         ;;
3847     dragonfly)
3848         disable symver
3849         ;;
3850     freebsd)
3851         ;;
3852     bsd/os)
3853         add_extralibs -lpoll -lgnugetopt
3854         ;;
3855     darwin)
3856         enabled ppc && add_asflags -force_cpusubtype_ALL
3857         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3858         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3859         add_ldflags -Wl,-dynamic,-search_paths_first
3860         SLIBSUF=".dylib"
3861         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3862         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3863         objformat="macho"
3864         enabled x86_64 && objformat="macho64"
3865         enabled_any pic shared ||
3866             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3867         check_header dispatch/dispatch.h &&
3868             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3869         ;;
3870     msys*)
3871         die "Native MSYS builds are discouraged, please use the MINGW environment."
3872         ;;
3873     mingw32*|mingw64*)
3874         if test $target_os = "mingw32ce"; then
3875             disable network
3876         else
3877             target_os=mingw32
3878         fi
3879         LIBTARGET=i386
3880         if enabled x86_64; then
3881             LIBTARGET="i386:x86-64"
3882         elif enabled arm; then
3883             LIBTARGET=arm-wince
3884         fi
3885         check_ldflags -Wl,--nxcompat
3886         check_ldflags -Wl,--dynamicbase
3887         shlibdir_default="$bindir_default"
3888         SLIBPREF=""
3889         SLIBSUF=".dll"
3890         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3891         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3892         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3893         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3894         SLIB_INSTALL_LINKS=
3895         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3896         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3897         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3898         objformat="win32"
3899         dlltool="${cross_prefix}dlltool"
3900         ranlib=:
3901         enable dos_paths
3902         ;;
3903     win32|win64)
3904         disable symver
3905         if enabled shared; then
3906             # Link to the import library instead of the normal static library
3907             # for shared libs.
3908             LD_LIB='%.lib'
3909             # Cannot build both shared and static libs with MSVC or icl.
3910             disable static
3911         fi
3912         shlibdir_default="$bindir_default"
3913         SLIBPREF=""
3914         SLIBSUF=".dll"
3915         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3916         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3917         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3918         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3919         SLIB_INSTALL_LINKS=
3920         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3921         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3922         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3923         objformat="win32"
3924         ranlib=:
3925         enable dos_paths
3926         ;;
3927     cygwin*)
3928         target_os=cygwin
3929         shlibdir_default="$bindir_default"
3930         SLIBPREF="cyg"
3931         SLIBSUF=".dll"
3932         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3933         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3934         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3935         SLIB_INSTALL_LINKS=
3936         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
3937         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
3938         objformat="win32"
3939         enable dos_paths
3940         ;;
3941     *-dos|freedos|opendos)
3942         network_extralibs="-lsocket"
3943         objformat="coff"
3944         enable dos_paths
3945         add_cppflags -U__STRICT_ANSI__
3946         ;;
3947     linux)
3948         enable dv1394
3949         enable section_data_rel_ro
3950         ;;
3951     irix*)
3952         target_os=irix
3953         ranlib="echo ignoring ranlib"
3954         ;;
3955     os/2*)
3956         ln_s="cp -f"
3957         objformat="aout"
3958         add_cppflags -D_GNU_SOURCE
3959         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3960         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3961         LIBSUF="_s.a"
3962         SLIBPREF=""
3963         SLIBSUF=".dll"
3964         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3965         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3966         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3967             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3968             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3969             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3970             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3971         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3972             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3973         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3974         enable dos_paths
3975         ;;
3976     gnu/kfreebsd)
3977         add_cppflags -D_BSD_SOURCE
3978         ;;
3979     gnu)
3980         ;;
3981     qnx)
3982         add_cppflags -D_QNX_SOURCE
3983         network_extralibs="-lsocket"
3984         ;;
3985     symbian)
3986         SLIBSUF=".dll"
3987         enable dos_paths
3988         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3989         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3990         add_ldflags -Wl,--target1-abs,--no-undefined \
3991                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3992                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3993         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3994                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3995                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3996         ;;
3997     osf1)
3998         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3999         ;;
4000     minix)
4001         ;;
4002     none)
4003         ;;
4004     *)
4005         die "Unknown OS '$target_os'."
4006         ;;
4007 esac
4008
4009 # determine libc flavour
4010
4011 probe_libc(){
4012     pfx=$1
4013     pfx_no_=${pfx%_}
4014     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4015     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4016         eval ${pfx}libc_type=uclibc
4017         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4018     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4019         eval ${pfx}libc_type=glibc
4020         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4021     # MinGW headers can be installed on Cygwin, so check for newlib first.
4022     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4023         eval ${pfx}libc_type=newlib
4024         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4025     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4026     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4027         eval ${pfx}libc_type=mingw64
4028         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4029         eval test \$${pfx_no_}cc_type = "gcc" &&
4030             add_${pfx}cppflags -D__printf__=__gnu_printf__
4031     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4032          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4033         eval ${pfx}libc_type=mingw32
4034         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4035             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4036             die "ERROR: MinGW32 runtime version must be >= 3.15."
4037         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4038         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
4039             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4040         eval test \$${pfx_no_}cc_type = "gcc" &&
4041             add_${pfx}cppflags -D__printf__=__gnu_printf__
4042     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4043         eval ${pfx}libc_type=msvcrt
4044         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4045             if [ "$pfx" = host_ ]; then
4046                 add_host_cppflags -Dsnprintf=_snprintf
4047             else
4048                 add_compat strtod.o strtod=avpriv_strtod
4049                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4050                                              _snprintf=avpriv_snprintf  \
4051                                              vsnprintf=avpriv_vsnprintf
4052             fi
4053         fi
4054         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4055         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4056         # 0x601 by default unless something else is set by the user.
4057         # This can easily lead to us detecting functions only present
4058         # in such new versions and producing binaries requiring windows 7.0.
4059         # Therefore explicitly set the default to XP unless the user has
4060         # set something else on the command line.
4061         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4062         # family. For these cases, configure is free to use any functions
4063         # found in the SDK headers by default. (Alternatively, we could force
4064         # _WIN32_WINNT to 0x0602 in that case.)
4065         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4066             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4067 #ifdef WINAPI_FAMILY
4068 #include <winapifamily.h>
4069 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4070 #error not desktop
4071 #endif
4072 #endif
4073 EOF
4074         if [ "$pfx" = "" ]; then
4075             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4076         fi
4077     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4078         eval ${pfx}libc_type=klibc
4079     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4080         eval ${pfx}libc_type=bionic
4081     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4082         eval ${pfx}libc_type=solaris
4083         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4084     else
4085         eval ${pfx}libc_type=default
4086         add_${pfx}cppflags -D_DEFAULT_SOURCE
4087     fi
4088 }
4089
4090 probe_libc
4091 test -n "$libc_type" && enable libc_$libc_type
4092 probe_libc host_
4093 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4094
4095 case $libc_type in
4096     bionic)
4097         add_compat strtod.o strtod=avpriv_strtod
4098         ;;
4099 esac
4100
4101 # hacks for compiler/libc/os combinations
4102
4103 if enabled_all tms470 libc_glibc; then
4104     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4105     add_cppflags -D__USER_LABEL_PREFIX__=
4106     add_cppflags -D__builtin_memset=memset
4107     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4108     add_cflags   -pds=48    # incompatible redefinition of macro
4109 fi
4110
4111 if enabled_all ccc libc_glibc; then
4112     add_ldflags -Wl,-z,now  # calls to libots crash without this
4113 fi
4114
4115 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4116     add_cppflags '-I\$(SRC_PATH)/compat/float'
4117
4118 esc(){
4119     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4120 }
4121
4122 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
4123
4124 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4125
4126 set_default $PATHS_LIST
4127 set_default nm
4128
4129 # we need to build at least one lib type
4130 if ! enabled_any static shared; then
4131     cat <<EOF
4132 At least one library type must be built.
4133 Specify --enable-static to build the static libraries or --enable-shared to
4134 build the shared libraries as well. To only build the shared libraries specify
4135 --disable-static in addition to --enable-shared.
4136 EOF
4137     exit 1
4138 fi
4139
4140 disabled optimizations || check_cflags -fomit-frame-pointer
4141
4142 enable_weak_pic() {
4143     disabled pic && return
4144     enable pic
4145     add_cppflags -DPIC
4146     case "$target_os" in
4147     mingw*|cygwin*)
4148         ;;
4149     *)
4150         add_cflags -fPIC
4151         ;;
4152     esac
4153     add_asflags  -fPIC
4154 }
4155
4156 enabled pic && enable_weak_pic
4157
4158 check_cc <<EOF || die "Symbol mangling check failed."
4159 int ff_extern;
4160 EOF
4161 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4162 extern_prefix=${sym%%ff_extern*}
4163
4164 check_cc <<EOF && enable_weak inline_asm
4165 void foo(void) { __asm__ volatile ("" ::); }
4166 EOF
4167
4168 _restrict=
4169 for restrict_keyword in restrict __restrict__ __restrict; do
4170     check_cc <<EOF && _restrict=$restrict_keyword && break
4171 void foo(char * $restrict_keyword p);
4172 EOF
4173 done
4174
4175 check_cc <<EOF && enable pragma_deprecated
4176 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4177 EOF
4178
4179 check_cc <<EOF && enable attribute_packed
4180 struct { int x; } __attribute__((packed)) x;
4181 EOF
4182
4183 check_cc <<EOF && enable attribute_may_alias
4184 union { int x; } __attribute__((may_alias)) x;
4185 EOF
4186
4187 check_cc <<EOF || die "endian test failed"
4188 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4189 EOF
4190 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4191
4192 check_gas() {
4193     log "check_gas using '$as' as AS"
4194     # :vararg is used on aarch64, arm and ppc altivec
4195     check_as <<EOF || return 1
4196 .macro m n, y:vararg=0
4197 \n: .int \y
4198 .endm
4199 m x
4200 EOF
4201     # .altmacro is only used in arm asm
4202     ! enabled arm || check_as <<EOF || return 1
4203 .altmacro
4204 EOF
4205     enable gnu_as
4206     return 0
4207 }
4208
4209 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4210     nogas=:
4211     enabled_any arm aarch64 && nogas=die
4212     enabled_all ppc altivec && nogas=warn
4213     as_noop=-v
4214
4215     case $as_type in
4216         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4217         gcc)  gaspp_as_type=gas ;;
4218         *)    gaspp_as_type=$as_type ;;
4219     esac
4220
4221     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4222
4223     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4224         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4225
4226     if ! check_gas ; then
4227         as=${gas:=$as}
4228         check_gas || \
4229             $nogas "GNU assembler not found, install/update gas-preprocessor"
4230     fi
4231
4232     check_as <<EOF && enable as_func
4233 .func test
4234 .endfunc
4235 EOF
4236 fi
4237
4238 check_inline_asm inline_asm_labels '"1:\n"'
4239
4240 if enabled aarch64; then
4241     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4242     # internal assembler in clang 3.3 does not support this instruction
4243     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4244     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4245
4246     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4247
4248 elif enabled alpha; then
4249
4250     check_cflags -mieee
4251
4252 elif enabled arm; then
4253
4254     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4255     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4256     enabled thumb && check_cflags -mthumb || check_cflags -marm
4257
4258     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4259         enable vfp_args
4260     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4261         enable vfp_args
4262     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4263         case "${cross_prefix:-$cc}" in
4264             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4265             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4266 __asm__ (".eabi_attribute 28, 1");
4267 int main(void) { return 0; }
4268 EOF
4269         esac
4270         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4271     fi
4272
4273     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4274     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4275     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4276     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4277     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4278     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4279
4280     [ $target_os = linux ] || [ $target_os = android ] ||
4281         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4282             $ARCH_EXT_LIST_ARM
4283
4284     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4285
4286     check_as <<EOF && enable as_dn_directive
4287 ra .dn d0.i16
4288 .unreq ra
4289 EOF
4290     check_as <<EOF && enable as_fpu_directive
4291 .fpu neon
4292 EOF
4293
4294     # llvm's integrated assembler supports .object_arch from llvm 3.5
4295     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4296 .object_arch armv4
4297 EOF
4298
4299     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4300
4301 elif enabled mips; then
4302
4303     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4304
4305     # make sure that only an instruction set is enabled
4306     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4307
4308     if enabled mips64; then
4309         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4310             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4311                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4312     else
4313         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4314             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4315                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4316     fi
4317
4318 elif enabled parisc; then
4319
4320     if enabled gcc; then
4321         case $($cc -dumpversion) in
4322             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4323         esac
4324     fi
4325
4326 elif enabled ppc; then
4327
4328     enable local_aligned_8 local_aligned_16 local_aligned_32
4329
4330     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4331     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4332     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4333     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4334
4335     # AltiVec flags: The FSF version of GCC differs from the Apple version
4336     if enabled altivec; then
4337         check_cflags -maltivec -mabi=altivec &&
4338         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4339         check_cflags -faltivec
4340
4341         # check if our compiler supports Motorola AltiVec C API
4342         check_cc <<EOF || disable altivec
4343 $inc_altivec_h
4344 int main(void) {
4345     vector signed int v1 = (vector signed int) { 0 };
4346     vector signed int v2 = (vector signed int) { 1 };
4347     v1 = vec_add(v1, v2);
4348     return 0;
4349 }
4350 EOF
4351
4352         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4353     fi
4354
4355     if enabled vsx; then
4356         check_cflags -mvsx &&
4357         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4358     fi
4359
4360     if enabled power8; then
4361         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4362     fi
4363
4364 elif enabled x86; then
4365
4366     check_builtin rdtsc    intrin.h   "__rdtsc()"
4367     check_builtin mm_empty mmintrin.h "_mm_empty()"
4368
4369     enable local_aligned_8 local_aligned_16 local_aligned_32
4370
4371     # check whether EBP is available on x86
4372     # As 'i' is stored on the stack, this program will crash
4373     # if the base pointer is used to access it because the
4374     # base pointer is cleared in the inline assembly code.
4375     check_exec_crash <<EOF && enable ebp_available
4376 volatile int i=0;
4377 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4378 return i;
4379 EOF
4380
4381     # check whether EBX is available on x86
4382     check_inline_asm ebx_available '""::"b"(0)' &&
4383         check_inline_asm ebx_available '"":::"%ebx"'
4384
4385     # check whether xmm clobbers are supported
4386     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4387
4388     # check whether binutils is new enough to compile SSSE3/MMXEXT
4389     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4390     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4391
4392     if ! disabled_any asm mmx yasm; then
4393         if check_cmd $yasmexe --version; then
4394             enabled x86_64 && yasm_extra="-m amd64"
4395             yasm_debug="-g dwarf2"
4396         elif check_cmd nasm -v; then
4397             yasmexe=nasm
4398             yasm_debug="-g -F dwarf"
4399             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4400         fi
4401
4402         YASMFLAGS="-f $objformat $yasm_extra"
4403         enabled pic               && append YASMFLAGS "-DPIC"
4404         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4405         case "$objformat" in
4406             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4407         esac
4408
4409         check_yasm "movbe ecx, [5]" && enable yasm ||
4410             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4411         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4412         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4413         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4414         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4415         check_yasm "CPU amdnop" || disable cpunop
4416     fi
4417
4418     case "$cpu" in
4419         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4420             disable fast_clz
4421         ;;
4422     esac
4423
4424 fi
4425
4426 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4427
4428 check_ldflags -Wl,--as-needed
4429
4430 if check_func dlopen; then
4431     ldl=
4432 elif check_func dlopen -ldl; then
4433     ldl=-ldl
4434 fi
4435
4436 if ! disabled network; then
4437     check_func getaddrinfo $network_extralibs
4438     check_func inet_aton $network_extralibs
4439
4440     check_type netdb.h "struct addrinfo"
4441     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4442     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4443     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4444     check_type poll.h "struct pollfd"
4445     check_type netinet/sctp.h "struct sctp_event_subscribe"
4446     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4447     check_type netinet/in.h "struct sockaddr_in6"
4448     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4449     check_type "sys/types.h sys/socket.h" socklen_t
4450
4451     # Prefer arpa/inet.h over winsock2
4452     if check_header arpa/inet.h ; then
4453         check_func closesocket
4454     elif check_header winsock2.h ; then
4455         check_func_headers winsock2.h closesocket -lws2 &&
4456             network_extralibs="-lws2" ||
4457         { check_func_headers winsock2.h closesocket -lws2_32 &&
4458             network_extralibs="-lws2_32"; } || disable winsock2_h network
4459         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4460
4461         check_type ws2tcpip.h socklen_t
4462         check_type ws2tcpip.h "struct addrinfo"
4463         check_type ws2tcpip.h "struct group_source_req"
4464         check_type ws2tcpip.h "struct ip_mreq_source"
4465         check_type ws2tcpip.h "struct ipv6_mreq"
4466         check_type winsock2.h "struct pollfd"
4467         check_struct winsock2.h "struct sockaddr" sa_len
4468         check_type ws2tcpip.h "struct sockaddr_in6"
4469         check_type ws2tcpip.h "struct sockaddr_storage"
4470     else
4471         disable network
4472     fi
4473 fi
4474
4475 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4476 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4477 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4478 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4479
4480 case "$custom_allocator" in
4481     jemalloc)
4482         # jemalloc by default does not use a prefix
4483         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4484     ;;
4485     tcmalloc)
4486         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
4487         malloc_prefix=tc_
4488     ;;
4489 esac
4490
4491 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4492 check_func  ${malloc_prefix}memalign            && enable memalign
4493 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4494
4495 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4496     check_func_headers time.h clock_gettime ||
4497         { check_lib time.h clock_gettime -lrt && LIBRT="-lrt"; }
4498
4499 check_func  fcntl
4500 check_func  fork
4501 check_func  gethrtime
4502 check_func  getopt
4503 check_func  getrusage
4504 check_func  gettimeofday
4505 check_func  gmtime_r
4506 check_func  isatty
4507 check_func  localtime_r
4508 check_func  mach_absolute_time
4509 check_func  mkstemp
4510 check_func  mmap
4511 check_func  mprotect
4512 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4513 check_func_headers time.h nanosleep || check_lib time.h nanosleep -lrt
4514 check_func  sched_getaffinity
4515 check_func  setrlimit
4516 check_func  strerror_r
4517 check_func  sysconf
4518 check_func  sysctl
4519 check_func  usleep
4520
4521 check_func_headers io.h setmode
4522 check_func_headers stdlib.h getenv
4523
4524 check_func_headers windows.h GetProcessAffinityMask
4525 check_func_headers windows.h GetProcessTimes
4526 check_func_headers windows.h GetSystemTimeAsFileTime
4527 check_func_headers windows.h LoadLibrary
4528 check_func_headers windows.h MapViewOfFile
4529 check_func_headers windows.h SetConsoleTextAttribute
4530 check_func_headers windows.h Sleep
4531 check_func_headers windows.h VirtualAlloc
4532 check_struct windows.h "CONDITION_VARIABLE" Ptr
4533
4534 check_header d3d11.h
4535 check_header direct.h
4536 check_header dlfcn.h
4537 check_header dxva.h
4538 check_header dxva2api.h
4539 check_header io.h
4540 check_header mach/mach_time.h
4541 check_header malloc.h
4542 check_header poll.h
4543 check_header sys/mman.h
4544 check_header sys/param.h
4545 check_header sys/resource.h
4546 check_header sys/select.h
4547 check_header sys/time.h
4548 check_header sys/un.h
4549 check_header unistd.h
4550 check_header valgrind/valgrind.h
4551 check_header VideoDecodeAcceleration/VDADecoder.h
4552 check_header windows.h
4553 check_header X11/extensions/XvMClib.h
4554
4555 # it seems there are versions of clang in some distros that try to use the
4556 # gcc headers, which explodes for stdatomic
4557 # so we also check that atomics actually work here
4558 check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4559
4560 check_lib "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4561 check_lib "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4562 check_lib "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4563
4564 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4565
4566 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4567 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4568 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4569
4570 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4571 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4572 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4573 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4574 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4575
4576 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4577
4578 if ! disabled w32threads && ! enabled pthreads; then
4579     check_func_headers "windows.h process.h" _beginthreadex &&
4580         enable w32threads || disable w32threads
4581 fi
4582
4583 # check for some common methods of building with pthread support
4584 # do this before the optional library checks as some of them require pthreads
4585 if ! disabled pthreads && ! enabled w32threads; then
4586     enable pthreads
4587     if check_lib pthread.h pthread_join -pthread; then
4588         add_cflags -pthread
4589     elif check_lib pthread.h pthread_join -pthreads; then
4590         add_cflags -pthreads
4591     elif check_lib pthread.h pthread_join -lpthreadGC2; then
4592         :
4593     elif check_lib pthread.h pthread_join -lpthread; then
4594         :
4595     elif ! check_func pthread_join; then
4596         disable 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.h      zlibVersion -lz   || disable  zlib
4604 disabled bzlib || check_lib bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4605
4606 check_lib 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} $LIBM
4614 done
4615
4616 # these are off by default, so fail if requested and not available
4617 enabled avisynth          && { check_header avisynth/avisynth_c.h || die "ERROR: avisynth/avisynth_c.h header not found"; }
4618 enabled avxsynth          && require avxsynth "avxsynth/avxsynth_c.h dlfcn.h" dlopen -ldl
4619 enabled cuda              && require cuda cuda.h cuInit -lcuda
4620 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4621 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4622 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4623 enabled libdc1394         && require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new
4624 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4625 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4626 enabled libfdk_aac        && require_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4627 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4628 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4629 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4630                                    check_lib "${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 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 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 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/ssl.h SSL_library_init -lssl -lcrypto ||
4703                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4704                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4705                                die "ERROR: openssl not found"; }
4706
4707 enabled gnutls            && check_lib gmp.h mpz_export -lgmp && enable gmp
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" $sdl_cflags &&
4718     enable sdl
4719 fi
4720
4721 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man
4722 ! disabled texi2html && check_cmd texi2html -version && enable texi2html || disable texi2html
4723
4724 check_header linux/fb.h
4725 check_header linux/videodev2.h
4726 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4727
4728 check_header AVFoundation/AVFoundation.h
4729
4730 check_header sys/videoio.h
4731
4732 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4733 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4734 # w32api 3.12 had it defined wrong
4735 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4736
4737 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4738 { check_header dev/bktr/ioctl_meteor.h &&
4739   check_header dev/bktr/ioctl_bt848.h; } ||
4740 { check_header machine/ioctl_meteor.h &&
4741   check_header machine/ioctl_bt848.h; } ||
4742 { check_header dev/video/meteor/ioctl_meteor.h &&
4743   check_header dev/video/bktr/ioctl_bt848.h; } ||
4744 check_header dev/ic/bt8xx.h
4745
4746 check_header sys/soundcard.h
4747 check_header soundcard.h
4748
4749 enabled_any alsa_indev alsa_outdev &&
4750     check_lib alsa/asoundlib.h snd_pcm_htimestamp -lasound
4751
4752 enabled jack_indev && check_lib jack/jack.h jack_client_open -ljack &&
4753     check_func jack_port_get_latency_range -ljack
4754
4755 enabled_any sndio_indev sndio_outdev && check_lib sndio.h sio_open -lsndio
4756
4757 if enabled libcdio; then
4758     check_lib "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4759     check_lib "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4760     die "ERROR: No usable libcdio/cdparanoia found"
4761 fi
4762
4763 if enabled libxcb; then
4764     check_pkg_config xcb-shape xcb/shape.h xcb_shape_rectangles || {
4765         enabled libxcb && die "ERROR: libxcb not found";
4766     } && enable libxcb
4767
4768     disabled libxcb_shm ||
4769         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
4770             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
4771         } && check_header sys/shm.h && enable libxcb_shm
4772
4773     disabled libxcb_xfixes ||
4774         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
4775             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
4776         } && enable libxcb_xfixes
4777
4778     add_cflags "$xcb_shape_cflags $xcb_shm_cflags $xcb_xfixes_cflags"
4779     add_extralibs "$xcb_shape_extralibs $xcb_shm_extralibs $xcb_xfixes_extralibs"
4780 fi
4781
4782 enabled dxva2 &&
4783     check_lib windows.h CoTaskMemFree -lole32 &&
4784     enable dxva2_lib
4785
4786 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4787
4788 enabled vaapi &&
4789     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
4790     disable vaapi
4791
4792 enabled vaapi &&
4793     check_lib "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
4794     enable vaapi_drm
4795
4796 enabled vaapi &&
4797     check_lib "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11 &&
4798     enable vaapi_x11
4799
4800 enabled vdpau &&
4801     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4802     disable vdpau
4803
4804 enabled vdpau &&
4805     check_lib "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11 &&
4806     enable vdpau_x11
4807
4808 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4809
4810 # add some useful compiler flags if supported
4811 check_cflags -Wdeclaration-after-statement
4812 check_cflags -Wall
4813 check_cflags -Wdisabled-optimization
4814 check_cflags -Wpointer-arith
4815 check_cflags -Wredundant-decls
4816 check_cflags -Wwrite-strings
4817 check_cflags -Wtype-limits
4818 check_cflags -Wundef
4819 check_cflags -Wmissing-prototypes
4820 check_cflags -Wstrict-prototypes
4821
4822 if enabled extra_warnings; then
4823     check_cflags -Wcast-qual
4824     check_cflags -Wextra
4825     check_cflags -Wpedantic
4826 fi
4827
4828 check_disable_warning(){
4829     warning_flag=-W${1#-Wno-}
4830     test_cflags $warning_flag && add_cflags $1
4831 }
4832
4833 check_disable_warning -Wno-parentheses
4834 check_disable_warning -Wno-switch
4835 check_disable_warning -Wno-format-zero-length
4836 check_disable_warning -Wno-pointer-sign
4837
4838 check_disable_warning_headers(){
4839     warning_flag=-W${1#-Wno-}
4840     test_cflags $warning_flag && add_cflags_headers $1
4841 }
4842
4843 check_disable_warning_headers -Wno-deprecated-declarations
4844 check_disable_warning_headers -Wno-unused-variable
4845
4846 check_objcflags -fobjc-arc && enable objc_arc
4847
4848 # add some linker flags
4849 check_ldflags -Wl,--warn-common