build: Create a component for MPEG audio header decoding
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [config.log]
81   --disable-logging        do not log configure debug information
82   --prefix=PREFIX          install in PREFIX [$prefix_default]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --enable-rpath           use rpath when linking programs (USE WITH CARE)
91
92 Licensing options:
93   --enable-gpl             allow use of GPL code, the resulting libs
94                            and binaries will be under GPL [no]
95   --enable-version3        upgrade (L)GPL to version 3 [no]
96   --enable-nonfree         allow use of nonfree code, the resulting libs
97                            and binaries will be unredistributable [no]
98
99 Configuration options:
100   --disable-static         do not build static libraries [no]
101   --enable-shared          build shared libraries [no]
102   --enable-small           optimize for size instead of speed
103   --enable-runtime-cpudetect detect CPU capabilities at runtime (bigger binary)
104   --enable-gray            enable full grayscale support (slower color)
105   --disable-swscale-alpha  disable alpha channel support in swscale
106   --disable-all            disable building components, libraries and programs
107
108 Program options:
109   --disable-programs       do not build command line programs
110   --disable-avconv         disable avconv build
111   --disable-avplay         disable avplay build
112   --disable-avprobe        disable avprobe build
113   --disable-avserver       deprecated, does nothing
114
115 Component options:
116   --disable-doc            do not build documentation
117   --disable-pod2man        do not build manual pages
118   --disable-texi2html      do not build HTML documentation
119   --disable-avdevice       disable libavdevice build
120   --disable-avcodec        disable libavcodec build
121   --disable-avformat       disable libavformat build
122   --disable-avutil         disable libavutil build
123   --disable-swscale        disable libswscale build
124   --disable-avfilter       disable video filter support [no]
125   --disable-avresample     disable libavresample build [no]
126   --disable-pthreads       disable pthreads [auto]
127   --disable-w32threads     disable Win32 threads [auto]
128   --disable-network        disable network support [no]
129   --disable-dct            disable DCT code
130   --disable-error-resilience disable error resilience code
131   --disable-lsp            disable LSP code
132   --disable-lzo            disable LZO decoder code
133   --disable-mdct           disable MDCT code
134   --disable-rdft           disable RDFT code
135   --disable-fft            disable FFT code
136   --disable-faan           disable floating point AAN (I)DCT code
137
138 Individual component options:
139   --disable-everything     disable all components listed below
140   --disable-encoder=NAME   disable encoder NAME
141   --enable-encoder=NAME    enable encoder NAME
142   --disable-encoders       disable all encoders
143   --disable-decoder=NAME   disable decoder NAME
144   --enable-decoder=NAME    enable decoder NAME
145   --disable-decoders       disable all decoders
146   --disable-hwaccel=NAME   disable hwaccel NAME
147   --enable-hwaccel=NAME    enable hwaccel NAME
148   --disable-hwaccels       disable all hwaccels
149   --disable-muxer=NAME     disable muxer NAME
150   --enable-muxer=NAME      enable muxer NAME
151   --disable-muxers         disable all muxers
152   --disable-demuxer=NAME   disable demuxer NAME
153   --enable-demuxer=NAME    enable demuxer NAME
154   --disable-demuxers       disable all demuxers
155   --enable-parser=NAME     enable parser NAME
156   --disable-parser=NAME    disable parser NAME
157   --disable-parsers        disable all parsers
158   --enable-bsf=NAME        enable bitstream filter NAME
159   --disable-bsf=NAME       disable bitstream filter NAME
160   --disable-bsfs           disable all bitstream filters
161   --enable-protocol=NAME   enable protocol NAME
162   --disable-protocol=NAME  disable protocol NAME
163   --disable-protocols      disable all protocols
164   --enable-indev=NAME      enable input device NAME
165   --disable-indev=NAME     disable input device NAME
166   --disable-indevs         disable input devices
167   --enable-outdev=NAME     enable output device NAME
168   --disable-outdev=NAME    disable output device NAME
169   --disable-outdevs        disable output devices
170   --disable-devices        disable all devices
171   --enable-filter=NAME     enable filter NAME
172   --disable-filter=NAME    disable filter NAME
173   --disable-filters        disable all filters
174
175 External library support:
176
177   Using any of the following switches will allow Libav to link to the
178   corresponding external library. All the components depending on that library
179   will become enabled, if all their other dependencies are met and they are not
180   explicitly disabled. E.g. --enable-libwavpack will enable linking to
181   libwavpack and allow the libwavpack encoder to be built, unless it is
182   specifically disabled with --disable-encoder=libwavpack.
183
184   Note that only the system libraries are auto-detected. All the other external
185   libraries must be explicitly enabled.
186
187   Also note that the following help text describes the purpose of the libraries
188   themselves, not all their features will necessarily be usable by Libav.
189
190   --enable-avisynth          video frameserver
191   --enable-bzlib             bzip2 compression [autodetect]
192   --enable-frei0r            video filtering plugins
193   --enable-gnutls            crypto
194   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
195   --enable-libcdio           audio CD input
196   --enable-libdc1394         IEEE 1394/Firewire camera input
197   --enable-libdcadec         DCA audio decoding
198   --enable-libfaac           AAC audio encoding
199   --enable-libfdk-aac        AAC audio encoding/decoding
200   --enable-libfontconfig     font configuration and management
201   --enable-libfreetype       font rendering
202   --enable-libgsm            GSM audio encoding/decoding
203   --enable-libhdcd           HDCD decoding filter
204   --enable-libilbc           ILBC audio encoding/decoding
205   --enable-libkvazaar        HEVC video encoding
206   --enable-libmp3lame        MP3 audio encoding
207   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
208   --enable-libopencore-amrwb AMR-WB audio decoding
209   --enable-libopencv         computer vision
210   --enable-libopenh264       H.264 video encoding/decoding
211   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
212   --enable-libopus           Opus audio encoding/decoding
213   --enable-libpulse          Pulseaudio sound server
214   --enable-librtmp           RTMP streaming
215   --enable-libschroedinger   Dirac video encoding/decoding
216   --enable-libsnappy         snappy compression
217   --enable-libspeex          Speex audio encoding/decoding
218   --enable-libtheora         Theora video encoding/decoding
219   --enable-libtwolame        MP2 audio encoding
220   --enable-libvo-aacenc      AAC audio encoding
221   --enable-libvo-amrwbenc    AMR-WB audio encoding
222   --enable-libvorbis         Vorbis audio encoding/decoding
223   --enable-libvpx            VP* video encoding/decoding
224   --enable-libwavpack        Wavpack audio encoding/decoding
225   --enable-libwebp           WebP image encoding/decoding
226   --enable-libx264           H.264 video encoding
227   --enable-libx265           HEVC video encoding
228   --enable-libxavs           Chinese AVS video encoding
229   --enable-libxcb            X window system protocol communication
230   --enable-libxcb-shm        X11 shm communication [auto]
231   --enable-libxcb-xfixes     X11 mouse rendering [auto]
232   --enable-libxvid           MPEG-4 ASP video encoding
233   --enable-openssl           crypto
234   --enable-zlib              compression [autodetect]
235
236   The following libraries provide various hardware acceleration features:
237   --enable-cuda    Nvidia CUDA (dynamically linked)
238   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
239   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
240   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
241   --enable-libnpp  Nvidia CUDA processing
242   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
243   --enable-nvenc   Nvidia video encoding
244   --enable-omx     OpenMAX IL
245   --enable-omx-rpi OpenMAX IL for Raspberry Pi
246   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
247   --enable-vda     Apple Video Decode Acceleration [auto]
248   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
249
250 Toolchain options:
251   --arch=ARCH              select architecture [$arch]
252   --cpu=CPU                select the minimum required CPU (affects
253                            instruction selection, may crash on older CPUs)
254   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
255   --enable-cross-compile   assume a cross-compiler is used
256   --sysroot=PATH           root of cross-build tree
257   --sysinclude=PATH        location of cross-build system headers
258   --target-os=OS           compiler targets OS [$target_os]
259   --target-exec=CMD        command to run executables on target
260   --target-path=DIR        path to view of build directory on target
261   --target-samples=DIR     path to samples directory on target
262   --toolchain=NAME         set tool defaults according to NAME
263   --nm=NM                  use nm tool
264   --ar=AR                  use archive tool AR [$ar_default]
265   --as=AS                  use assembler AS [$as_default]
266   --cc=CC                  use C compiler CC [$cc_default]
267   --objcc=OCC              use ObjC compiler OCC [$cc_default]
268   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
269   --ld=LD                  use linker LD
270   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
271   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
272   --host-cc=HOSTCC         use host C compiler HOSTCC
273   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
274   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
275   --host-ld=HOSTLD         use host linker HOSTLD
276   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
277   --host-libs=HLIBS        use libs HLIBS when linking for host
278   --host-os=OS             compiler host OS [$target_os]
279   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
280   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
281   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
282   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
283   --extra-libs=ELIBS       add ELIBS [$ELIBS]
284   --extra-version=STRING   version string suffix []
285   --optflags=OPTFLAGS      override optimization-related compiler flags
286   --enable-pic             build position-independent code
287   --enable-thumb           compile for Thumb instruction set
288   --enable-lto             use link-time optimization
289   --env="ENV=override"     override the environment variables
290
291 Advanced options (experts only):
292   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
293   --custom-allocator=NAME  use a supported custom allocator
294   --disable-symver         disable symbol versioning
295   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
296   --disable-safe-bitstream-reader
297                            disable buffer boundary checking in bitreaders
298                            (faster, but may crash)
299   --enable-sram            allow use of on-chip SRAM
300
301 Optimization options (experts only):
302   --disable-asm            disable all assembly optimizations
303   --disable-altivec        disable AltiVec optimizations
304   --disable-vsx            disable VSX optimizations
305   --disable-power8         disable POWER8 optimizations
306   --disable-amd3dnow       disable 3DNow! optimizations
307   --disable-amd3dnowext    disable 3DNow! extended optimizations
308   --disable-mmx            disable MMX optimizations
309   --disable-mmxext         disable MMXEXT optimizations
310   --disable-sse            disable SSE optimizations
311   --disable-sse2           disable SSE2 optimizations
312   --disable-sse3           disable SSE3 optimizations
313   --disable-ssse3          disable SSSE3 optimizations
314   --disable-sse4           disable SSE4 optimizations
315   --disable-sse42          disable SSE4.2 optimizations
316   --disable-avx            disable AVX optimizations
317   --disable-xop            disable XOP optimizations
318   --disable-fma3           disable FMA3 optimizations
319   --disable-fma4           disable FMA4 optimizations
320   --disable-avx2           disable AVX2 optimizations
321   --disable-armv5te        disable armv5te optimizations
322   --disable-armv6          disable armv6 optimizations
323   --disable-armv6t2        disable armv6t2 optimizations
324   --disable-vfp            disable VFP optimizations
325   --disable-neon           disable NEON optimizations
326   --disable-inline-asm     disable use of inline assembly
327   --disable-yasm           disable use of nasm/yasm assembly
328
329 Developer options (useful when working on Libav itself):
330   --disable-debug          disable debugging symbols
331   --enable-debug=LEVEL     set the debug level [$debuglevel]
332   --disable-optimizations  disable compiler optimizations
333   --enable-extra-warnings  enable more compiler warnings
334   --samples=PATH           location of test samples for FATE, if not set use
335                            \$LIBAV_SAMPLES at make invocation time.
336   --enable-neon-clobber-test check NEON registers for clobbering (should be
337                            used only for debugging purposes)
338   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
339                            should be used only for debugging purposes)
340   --enable-random          randomly enable/disable components
341   --disable-random
342   --enable-random=LIST     randomly enable/disable specific components or
343   --disable-random=LIST    component groups. LIST is a comma-separated list
344                            of NAME[:PROB] entries where NAME is a component
345                            (group) and PROB the probability associated with
346                            NAME (default 0.5).
347   --random-seed=VALUE      seed value for --enable/disable-random
348   --disable-valgrind-backtrace do not print a backtrace under Valgrind
349                            (only applies to --disable-optimizations builds)
350
351 NOTE: Object files are built at the place where configure is launched.
352 EOF
353   exit 0
354 }
355
356 quotes='""'
357
358 log(){
359     echo "$@" >> $logfile
360 }
361
362 log_file(){
363     log BEGIN $1
364     i=1
365     while read line; do
366         printf '%5s   %s\n' "${i}" "${line}"
367         i=$(($i+1))
368     done < $1 >> $logfile
369     log END $1
370 }
371
372 echolog(){
373     log "$@"
374     echo "$@"
375 }
376
377 warn(){
378     log "WARNING: $*"
379     WARNINGS="${WARNINGS}WARNING: $*\n"
380 }
381
382 die(){
383     echolog "$@"
384     cat <<EOF
385
386 If you think configure made a mistake, make sure you are using the latest
387 version from Git.  If the latest version fails, report the problem to the
388 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
389 EOF
390     if disabled logging; then
391         cat <<EOF
392 Rerun configure with logging enabled (do not use --disable-logging), and
393 include the log this produces with your report.
394 EOF
395     else
396         cat <<EOF
397 Include the log file "$logfile" produced by configure as this will help
398 solving the problem.
399 EOF
400     fi
401     exit 1
402 }
403
404 # Avoid locale weirdness, besides we really just want to translate ASCII.
405 toupper(){
406     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
407 }
408
409 tolower(){
410     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
411 }
412
413 c_escape(){
414     echo "$*" | sed 's/["\\]/\\\0/g'
415 }
416
417 sh_quote(){
418     v=$(echo "$1" | sed "s/'/'\\\\''/g")
419     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
420     echo "$v"
421 }
422
423 cleanws(){
424     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
425 }
426
427 filter(){
428     pat=$1
429     shift
430     for v; do
431         eval "case $v in $pat) printf '%s ' $v ;; esac"
432     done
433 }
434
435 filter_out(){
436     pat=$1
437     shift
438     for v; do
439         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
440     done
441 }
442
443 map(){
444     m=$1
445     shift
446     for v; do eval $m; done
447 }
448
449 add_suffix(){
450     suffix=$1
451     shift
452     for v; do echo ${v}${suffix}; done
453 }
454
455 set_all(){
456     value=$1
457     shift
458     for var in $*; do
459         eval $var=$value
460     done
461 }
462
463 set_weak(){
464     value=$1
465     shift
466     for var; do
467         eval : \${$var:=$value}
468     done
469 }
470
471 sanitize_var_name(){
472     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
473 }
474
475 set_safe(){
476     var=$1
477     shift
478     eval $(sanitize_var_name "$var")='$*'
479 }
480
481 get_safe(){
482     eval echo \$$(sanitize_var_name "$1")
483 }
484
485 pushvar(){
486     for pvar in $*; do
487         eval level=\${${pvar}_level:=0}
488         eval ${pvar}_${level}="\$$pvar"
489         eval ${pvar}_level=$(($level+1))
490     done
491 }
492
493 popvar(){
494     for pvar in $*; do
495         eval level=\${${pvar}_level:-0}
496         test $level = 0 && continue
497         eval level=$(($level-1))
498         eval $pvar="\${${pvar}_${level}}"
499         eval ${pvar}_level=$level
500         eval unset ${pvar}_${level}
501     done
502 }
503
504 enable(){
505     set_all yes $*
506 }
507
508 disable(){
509     set_all no $*
510 }
511
512 enable_weak(){
513     set_weak yes $*
514 }
515
516 disable_weak(){
517     set_weak no $*
518 }
519
520 enable_safe(){
521     for var; do
522         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
523     done
524 }
525
526 disable_safe(){
527     for var; do
528         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
529     done
530 }
531
532 do_enable_deep(){
533     for var; do
534         enabled $var && continue
535         eval sel="\$${var}_select"
536         eval sgs="\$${var}_suggest"
537         pushvar var sgs
538         enable_deep $sel
539         popvar sgs
540         enable_deep_weak $sgs
541         popvar var
542     done
543 }
544
545 enable_deep(){
546     do_enable_deep $*
547     enable $*
548 }
549
550 enable_deep_weak(){
551     for var; do
552         disabled $var && continue
553         pushvar var
554         do_enable_deep $var
555         popvar var
556         enable_weak $var
557     done
558 }
559
560 enabled(){
561     test "${1#!}" = "$1" && op== || op=!=
562     eval test "x\$${1#!}" $op "xyes"
563 }
564
565 disabled(){
566     test "${1#!}" = "$1" && op== || op=!=
567     eval test "x\$${1#!}" $op "xno"
568 }
569
570 enabled_all(){
571     for opt; do
572         enabled $opt || return 1
573     done
574 }
575
576 disabled_all(){
577     for opt; do
578         disabled $opt || return 1
579     done
580 }
581
582 enabled_any(){
583     for opt; do
584         enabled $opt && return 0
585     done
586 }
587
588 disabled_any(){
589     for opt; do
590         disabled $opt && return 0
591     done
592     return 1
593 }
594
595 set_default(){
596     for opt; do
597         eval : \${$opt:=\$${opt}_default}
598     done
599 }
600
601 is_in(){
602     value=$1
603     shift
604     for var in $*; do
605         [ $var = $value ] && return 0
606     done
607     return 1
608 }
609
610 do_check_deps(){
611     for cfg; do
612         cfg="${cfg#!}"
613         enabled ${cfg}_checking && die "Circular dependency for $cfg."
614         disabled ${cfg}_checking && continue
615         enable ${cfg}_checking
616         append allopts $cfg
617
618         eval dep_all="\$${cfg}_deps"
619         eval dep_any="\$${cfg}_deps_any"
620         eval dep_sel="\$${cfg}_select"
621         eval dep_sgs="\$${cfg}_suggest"
622         eval dep_ifa="\$${cfg}_if"
623         eval dep_ifn="\$${cfg}_if_any"
624
625         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
626         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
627         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
628
629         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
630         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
631         enabled_all  $dep_all || disable $cfg
632         enabled_any  $dep_any || disable $cfg
633         disabled_any $dep_sel && disable $cfg
634
635         if enabled $cfg; then
636             enable_deep $dep_sel
637             enable_deep_weak $dep_sgs
638         fi
639
640         disable ${cfg}_checking
641     done
642 }
643
644 check_deps(){
645     unset allopts
646
647     do_check_deps "$@"
648
649     for cfg in $allopts; do
650         enabled $cfg || continue
651         eval dep_extralibs="\$${cfg}_extralibs"
652         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
653     done
654 }
655
656 print_config(){
657     pfx=$1
658     files=$2
659     shift 2
660     map 'eval echo "$v \${$v:-no}"' "$@" |
661     awk "BEGIN { split(\"$files\", files) }
662         {
663             c = \"$pfx\" toupper(\$1);
664             v = \$2;
665             sub(/yes/, 1, v);
666             sub(/no/,  0, v);
667             for (f in files) {
668                 file = files[f];
669                 if (file ~ /\\.h\$/) {
670                     printf(\"#define %s %d\\n\", c, v) >>file;
671                 } else if (file ~ /\\.asm\$/) {
672                     printf(\"%%define %s %d\\n\", c, v) >>file;
673                 } else if (file ~ /\\.mak\$/) {
674                     n = -v ? \"\" : \"!\";
675                     printf(\"%s%s=yes\\n\", n, c) >>file;
676                 }
677             }
678         }"
679 }
680
681 print_enabled(){
682     suf=$1
683     shift
684     for v; do
685         enabled $v && printf "%s\n" ${v%$suf}
686     done
687 }
688
689 append(){
690     var=$1
691     shift
692     eval "$var=\"\$$var $*\""
693 }
694
695 prepend(){
696     var=$1
697     shift
698     eval "$var=\"$* \$$var\""
699 }
700
701 unique(){
702     var=$1
703     uniq_list=""
704     for tok in $(eval echo \$$var); do
705         uniq_list="$(filter_out $tok $uniq_list) $tok"
706     done
707     eval "$var=\"${uniq_list}\""
708 }
709
710 add_cppflags(){
711     append CPPFLAGS "$@"
712 }
713
714 add_cflags(){
715     append CFLAGS $($cflags_filter "$@")
716 }
717
718 add_asflags(){
719     append ASFLAGS $($asflags_filter "$@")
720 }
721
722 add_objcflags(){
723     append OBJCFLAGS $($objcflags_filter "$@")
724 }
725
726 add_ldflags(){
727     append LDFLAGS $($ldflags_filter "$@")
728 }
729
730 add_ldexeflags(){
731     append LDEXEFLAGS $($ldflags_filter "$@")
732 }
733
734 add_stripflags(){
735     append STRIPFLAGS "$@"
736 }
737
738 add_extralibs(){
739     prepend extralibs $($ldflags_filter "$@")
740 }
741
742 add_host_cppflags(){
743     append host_cppflags "$@"
744 }
745
746 add_host_cflags(){
747     append host_cflags $($host_cflags_filter "$@")
748 }
749
750 add_host_ldflags(){
751     append host_ldflags $($host_ldflags_filter "$@")
752 }
753
754 add_compat(){
755     append compat_objs $1
756     shift
757     map 'add_cppflags -D$v' "$@"
758 }
759
760 check_cmd(){
761     log "$@"
762     "$@" >> $logfile 2>&1
763 }
764
765 cc_o(){
766     eval printf '%s\\n' $CC_O
767 }
768
769 cc_e(){
770     eval printf '%s\\n' $CC_E
771 }
772
773 check_cc(){
774     log check_cc "$@"
775     cat > $TMPC
776     log_file $TMPC
777     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
778 }
779
780 check_objcc(){
781     log check_objcc "$@"
782     cat > $TMPC
783     log_file $TMPC
784     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
785 }
786
787 check_cpp(){
788     log check_cpp "$@"
789     cat > $TMPC
790     log_file $TMPC
791     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
792 }
793
794 as_o(){
795     eval printf '%s\\n' $AS_O
796 }
797
798 check_as(){
799     log check_as "$@"
800     cat > $TMPS
801     log_file $TMPS
802     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
803 }
804
805 check_inline_asm(){
806     log check_inline_asm "$@"
807     name="$1"
808     code="$2"
809     shift 2
810     disable $name
811     check_cc "$@" <<EOF && enable $name
812 void foo(void){ __asm__ volatile($code); }
813 EOF
814 }
815
816 check_insn(){
817     log check_insn "$@"
818     check_inline_asm ${1}_inline "\"$2\""
819     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
820 }
821
822 check_yasm(){
823     log check_yasm "$@"
824     echo "$1" > $TMPS
825     log_file $TMPS
826     shift 1
827     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
828 }
829
830 ld_o(){
831     eval printf '%s\\n' $LD_O
832 }
833
834 check_ld(){
835     log check_ld "$@"
836     flags=$(filter_out '-l*' "$@")
837     libs=$(filter '-l*' "$@")
838     check_cc $($cflags_filter $flags) || return
839     flags=$($ldflags_filter $flags)
840     libs=$($ldflags_filter $libs)
841     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
842 }
843
844 print_include(){
845     hdr=$1
846     test "${hdr%.h}" = "${hdr}" &&
847         echo "#include $hdr"    ||
848         echo "#include <$hdr>"
849 }
850
851 check_code(){
852     log check_code "$@"
853     check=$1
854     headers=$2
855     code=$3
856     shift 3
857     {
858         for hdr in $headers; do
859             print_include $hdr
860         done
861         echo "int main(void) { $code; return 0; }"
862     } | check_$check "$@"
863 }
864
865 check_cppflags(){
866     log check_cppflags "$@"
867     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
868 int x;
869 EOF
870 }
871
872 test_cflags(){
873     log test_cflags "$@"
874     set -- $($cflags_filter "$@")
875     check_cc "$@" <<EOF
876 int x;
877 EOF
878 }
879
880 check_cflags(){
881     log check_cflags "$@"
882     test_cflags "$@" && add_cflags "$@"
883 }
884
885 test_objcflags(){
886     log test_objcflags "$@"
887     set -- $($objcflags_filter "$@")
888     check_objcc "$@" <<EOF
889 int x;
890 EOF
891 }
892
893 check_objcflags(){
894     log check_objcflags "$@"
895     test_objcflags "$@" && add_objcflags "$@"
896 }
897
898 test_ldflags(){
899     log test_ldflags "$@"
900     check_ld "$@" <<EOF
901 int main(void){ return 0; }
902 EOF
903 }
904
905 check_ldflags(){
906     log check_ldflags "$@"
907     test_ldflags "$@" && add_ldflags "$@"
908 }
909
910 test_stripflags(){
911     log test_stripflags "$@"
912     # call check_cc to get a fresh TMPO
913     check_cc <<EOF
914 int main(void) { return 0; }
915 EOF
916     check_cmd $strip $STRIPFLAGS "$@" $TMPO
917 }
918
919 check_stripflags(){
920     log check_stripflags "$@"
921     test_stripflags "$@" && add_stripflags "$@"
922 }
923
924 check_header(){
925     log check_header "$@"
926     header=$1
927     shift
928     disable_safe $header
929     check_cpp "$@" <<EOF && enable_safe $header
930 #include <$header>
931 int x;
932 EOF
933 }
934
935 check_func(){
936     log check_func "$@"
937     func=$1
938     shift
939     disable $func
940     check_ld "$@" <<EOF && enable $func
941 extern int $func();
942 int main(void){ $func(); }
943 EOF
944 }
945
946 check_mathfunc(){
947     log check_mathfunc "$@"
948     func=$1
949     narg=$2
950     shift 2
951     test $narg = 2 && args="f, g" || args="f"
952     disable $func
953     check_ld "$@" <<EOF && enable $func
954 #include <math.h>
955 float foo(float f, float g) { return $func($args); }
956 int main(void){ return 0; }
957 EOF
958 }
959
960 check_func_headers(){
961     log check_func_headers "$@"
962     headers=$1
963     funcs=$2
964     shift 2
965     {
966         for hdr in $headers; do
967             print_include $hdr
968         done
969         for func in $funcs; do
970             echo "long check_$func(void) { return (long) $func; }"
971         done
972         echo "int main(void) { return 0; }"
973     } | check_ld "$@" && enable $funcs && enable_safe $headers
974 }
975
976 check_cpp_condition(){
977     log check_cpp_condition "$@"
978     header=$1
979     condition=$2
980     shift 2
981     check_cpp "$@" <<EOF
982 #include <$header>
983 #if !($condition)
984 #error "unsatisfied condition: $condition"
985 #endif
986 EOF
987 }
988
989 test_cflags_cpp(){
990     log test_cflags_cpp "$@"
991     flags=$1
992     condition=$2
993     shift 2
994     set -- $($cflags_filter "$flags")
995     check_cpp "$@" <<EOF
996 #if !($condition)
997 #error "unsatisfied condition: $condition"
998 #endif
999 EOF
1000 }
1001
1002 check_lib(){
1003     log check_lib "$@"
1004     headers="$1"
1005     funcs="$2"
1006     shift 2
1007     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1008 }
1009
1010 check_pkg_config(){
1011     log check_pkg_config "$@"
1012     pkg="$1"
1013     headers="$2"
1014     funcs="$3"
1015     shift 3
1016     check_cmd $pkg_config --exists --print-errors $pkg || return
1017     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1018     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1019     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1020         set_safe "${pkg}_cflags" $pkg_cflags   &&
1021         set_safe "${pkg}_libs"   $pkg_libs
1022 }
1023
1024 check_exec(){
1025     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1026 }
1027
1028 check_exec_crash(){
1029     log check_exec_crash "$@"
1030     code=$(cat)
1031
1032     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1033     # are safe but may not be available everywhere.  Thus we use
1034     # raise(SIGTERM) instead.  The check is run in a subshell so we
1035     # can redirect the "Terminated" message from the shell.  SIGBUS
1036     # is not defined by standard C so it is used conditionally.
1037
1038     (check_exec "$@") >> $logfile 2>&1 <<EOF
1039 #include <signal.h>
1040 static void sighandler(int sig){
1041     raise(SIGTERM);
1042 }
1043 int foo(void){
1044     $code
1045 }
1046 int (*func_ptr)(void) = foo;
1047 int main(void){
1048     signal(SIGILL, sighandler);
1049     signal(SIGFPE, sighandler);
1050     signal(SIGSEGV, sighandler);
1051 #ifdef SIGBUS
1052     signal(SIGBUS, sighandler);
1053 #endif
1054     return func_ptr();
1055 }
1056 EOF
1057 }
1058
1059 check_type(){
1060     log check_type "$@"
1061     headers=$1
1062     type=$2
1063     shift 2
1064     disable_safe "$type"
1065     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1066 }
1067
1068 check_struct(){
1069     log check_struct "$@"
1070     headers=$1
1071     struct=$2
1072     member=$3
1073     shift 3
1074     disable_safe "${struct}_${member}"
1075     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1076         enable_safe "${struct}_${member}"
1077 }
1078
1079 check_builtin(){
1080     log check_builtin "$@"
1081     name=$1
1082     headers=$2
1083     builtin=$3
1084     shift 3
1085     disable "$name"
1086     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1087 }
1088
1089 check_compile_assert(){
1090     log check_compile_assert "$@"
1091     name=$1
1092     headers=$2
1093     condition=$3
1094     shift 3
1095     disable "$name"
1096     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1097 }
1098
1099 require(){
1100     log require "$@"
1101     name="$1"
1102     headers="$2"
1103     func="$3"
1104     shift 3
1105     check_lib "$headers" $func "$@" || die "ERROR: $name not found"
1106 }
1107
1108 require_pkg_config(){
1109     log require_pkg_config "$@"
1110     pkg="$1"
1111     check_pkg_config "$@" || die "ERROR: $pkg not found"
1112     add_cflags    $(get_safe "${pkg}_cflags")
1113     add_extralibs $(get_safe "${pkg}_libs")
1114 }
1115
1116 hostcc_e(){
1117     eval printf '%s\\n' $HOSTCC_E
1118 }
1119
1120 hostcc_o(){
1121     eval printf '%s\\n' $HOSTCC_O
1122 }
1123
1124 check_host_cc(){
1125     log check_host_cc "$@"
1126     cat > $TMPC
1127     log_file $TMPC
1128     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1129 }
1130
1131 check_host_cpp(){
1132     log check_host_cpp "$@"
1133     cat > $TMPC
1134     log_file $TMPC
1135     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1136 }
1137
1138 check_host_cppflags(){
1139     log check_host_cppflags "$@"
1140     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1141 int x;
1142 EOF
1143 }
1144
1145 check_host_cflags(){
1146     log check_host_cflags "$@"
1147     set -- $($host_cflags_filter "$@")
1148     check_host_cc "$@" <<EOF && append host_cflags "$@"
1149 int x;
1150 EOF
1151 }
1152
1153 check_host_cpp_condition(){
1154     log check_host_cpp_condition "$@"
1155     header=$1
1156     condition=$2
1157     shift 2
1158     check_host_cpp "$@" <<EOF
1159 #include <$header>
1160 #if !($condition)
1161 #error "unsatisfied condition: $condition"
1162 #endif
1163 EOF
1164 }
1165
1166 apply(){
1167     file=$1
1168     shift
1169     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1170 }
1171
1172 cp_if_changed(){
1173     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1174     mkdir -p "$(dirname $2)"
1175     cp -f "$1" "$2"
1176 }
1177
1178 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1179 # system-dependent things.
1180
1181 AVCODEC_COMPONENTS="
1182     bsfs
1183     decoders
1184     encoders
1185     hwaccels
1186     parsers
1187 "
1188
1189 AVDEVICE_COMPONENTS="
1190     indevs
1191     outdevs
1192 "
1193 AVFILTER_COMPONENTS="
1194     filters
1195 "
1196 AVFORMAT_COMPONENTS="
1197     demuxers
1198     muxers
1199     protocols
1200 "
1201
1202 AVRESAMPLE_COMPONENTS=""
1203 AVUTIL_COMPONENTS=""
1204
1205 COMPONENT_LIST="
1206     $AVCODEC_COMPONENTS
1207     $AVDEVICE_COMPONENTS
1208     $AVFILTER_COMPONENTS
1209     $AVFORMAT_COMPONENTS
1210     $AVRESAMPLE_COMPONENTS
1211     $AVUTIL_COMPONENTS
1212 "
1213
1214 EXAMPLE_LIST="
1215     decode_audio_example
1216     decode_video_example
1217     encode_audio_example
1218     encode_video_example
1219     filter_audio_example
1220     metadata_example
1221     output_example
1222     qsvdec_example
1223     transcode_aac_example
1224 "
1225
1226 HWACCEL_LIBRARY_NONFREE_LIST="
1227     cuda
1228     libnpp
1229 "
1230 HWACCEL_LIBRARY_LIST="
1231     $HWACCEL_LIBRARY_NONFREE_LIST
1232     d3d11va
1233     dxva2
1234     libmfx
1235     mmal
1236     nvenc
1237     omx
1238     vaapi
1239     vda
1240     vdpau
1241 "
1242
1243 EXTERNAL_LIBRARY_GPL_LIST="
1244     libcdio
1245     libx264
1246     libx265
1247     libxavs
1248     libxvid
1249 "
1250
1251 EXTERNAL_LIBRARY_NONFREE_LIST="
1252     libfaac
1253     libfdk_aac
1254     openssl
1255 "
1256
1257 EXTERNAL_LIBRARY_VERSION3_LIST="
1258     libopencore_amrnb
1259     libopencore_amrwb
1260     libvo_aacenc
1261     libvo_amrwbenc
1262 "
1263
1264 EXTERNAL_LIBRARY_LIST="
1265     $EXTERNAL_LIBRARY_GPL_LIST
1266     $EXTERNAL_LIBRARY_NONFREE_LIST
1267     $EXTERNAL_LIBRARY_VERSION3_LIST
1268     avisynth
1269     bzlib
1270     frei0r
1271     gnutls
1272     libbs2b
1273     libdc1394
1274     libdcadec
1275     libfontconfig
1276     libfreetype
1277     libgsm
1278     libhdcd
1279     libilbc
1280     libkvazaar
1281     libmp3lame
1282     libopencv
1283     libopenh264
1284     libopenjpeg
1285     libopus
1286     libpulse
1287     librtmp
1288     libschroedinger
1289     libsnappy
1290     libspeex
1291     libtheora
1292     libtwolame
1293     libvorbis
1294     libvpx
1295     libwavpack
1296     libwebp
1297     libxcb
1298     libxcb_shm
1299     libxcb_xfixes
1300     zlib
1301 "
1302
1303 FEATURE_LIST="
1304     gray
1305     hardcoded_tables
1306     omx_rpi
1307     runtime_cpudetect
1308     safe_bitstream_reader
1309     shared
1310     small
1311     sram
1312     static
1313     swscale_alpha
1314 "
1315
1316 LIBRARY_LIST="
1317     avcodec
1318     avdevice
1319     avfilter
1320     avformat
1321     avresample
1322     avutil
1323     swscale
1324 "
1325
1326 LICENSE_LIST="
1327     gpl
1328     nonfree
1329     version3
1330 "
1331
1332 PROGRAM_LIST="
1333     avconv
1334     avplay
1335     avprobe
1336 "
1337
1338 SUBSYSTEM_LIST="
1339     dct
1340     doc
1341     error_resilience
1342     faan
1343     fft
1344     lsp
1345     lzo
1346     mdct
1347     network
1348     rdft
1349 "
1350
1351 CONFIG_LIST="
1352     $COMPONENT_LIST
1353     $EXAMPLE_LIST
1354     $EXTERNAL_LIBRARY_LIST
1355     $HWACCEL_LIBRARY_LIST
1356     $FEATURE_LIST
1357     $LICENSE_LIST
1358     $LIBRARY_LIST
1359     $PROGRAM_LIST
1360     $SUBSYSTEM_LIST
1361     neon_clobber_test
1362     pic
1363     pod2man
1364     texi2html
1365     thumb
1366     valgrind_backtrace
1367     xmm_clobber_test
1368 "
1369
1370 THREADS_LIST="
1371     pthreads
1372     w32threads
1373 "
1374
1375 ATOMICS_LIST="
1376     atomics_gcc
1377     atomics_suncc
1378     atomics_win32
1379 "
1380
1381 ARCH_LIST="
1382     aarch64
1383     alpha
1384     arm
1385     avr32
1386     avr32_ap
1387     avr32_uc
1388     bfin
1389     ia64
1390     m68k
1391     mips
1392     mips64
1393     parisc
1394     ppc
1395     ppc64
1396     s390
1397     sh4
1398     sparc
1399     sparc64
1400     tilegx
1401     tilepro
1402     tomi
1403     x86
1404     x86_32
1405     x86_64
1406 "
1407
1408 ARCH_EXT_LIST_ARM="
1409     armv5te
1410     armv6
1411     armv6t2
1412     armv8
1413     neon
1414     vfp
1415     vfpv3
1416 "
1417
1418 ARCH_EXT_LIST_X86_SIMD="
1419     amd3dnow
1420     amd3dnowext
1421     avx
1422     avx2
1423     fma3
1424     fma4
1425     mmx
1426     mmxext
1427     sse
1428     sse2
1429     sse3
1430     sse4
1431     sse42
1432     ssse3
1433     xop
1434 "
1435
1436 ARCH_EXT_LIST_PPC="
1437     altivec
1438     dcbzl
1439     ldbrx
1440     power8
1441     ppc4xx
1442     vsx
1443 "
1444
1445 ARCH_EXT_LIST_X86="
1446     $ARCH_EXT_LIST_X86_SIMD
1447     cpunop
1448     i686
1449 "
1450
1451 ARCH_EXT_LIST_MIPS="
1452     loongson
1453     mips32r1
1454     mips64r1
1455     mips32r2
1456     mips64r2
1457     mips32r6
1458     mips64r6
1459 "
1460
1461 ARCH_EXT_LIST="
1462     $ARCH_EXT_LIST_ARM
1463     $ARCH_EXT_LIST_MIPS
1464     $ARCH_EXT_LIST_PPC
1465     $ARCH_EXT_LIST_X86
1466     vis
1467 "
1468
1469 ARCH_FEATURES="
1470     aligned_stack
1471     fast_64bit
1472     fast_clz
1473     fast_cmov
1474     local_aligned_8
1475     local_aligned_16
1476     local_aligned_32
1477     simd_align_16
1478     simd_align_32
1479 "
1480
1481 BUILTIN_LIST="
1482     atomic_cas_ptr
1483     machine_rw_barrier
1484     MemoryBarrier
1485     mm_empty
1486     rdtsc
1487     sem_timedwait
1488     sync_val_compare_and_swap
1489 "
1490 HAVE_LIST_CMDLINE="
1491     inline_asm
1492     symver
1493     yasm
1494 "
1495
1496 HAVE_LIST_PUB="
1497     bigendian
1498     fast_unaligned
1499 "
1500
1501 HEADERS_LIST="
1502     AVFoundation_AVFoundation_h
1503     alsa_asoundlib_h
1504     altivec_h
1505     arpa_inet_h
1506     cdio_paranoia_h
1507     cdio_paranoia_paranoia_h
1508     dispatch_dispatch_h
1509     dev_bktr_ioctl_bt848_h
1510     dev_bktr_ioctl_meteor_h
1511     dev_ic_bt8xx_h
1512     dev_video_bktr_ioctl_bt848_h
1513     dev_video_meteor_ioctl_meteor_h
1514     direct_h
1515     dlfcn_h
1516     d3d11_h
1517     dxva_h
1518     gsm_h
1519     io_h
1520     mach_mach_time_h
1521     machine_ioctl_bt848_h
1522     machine_ioctl_meteor_h
1523     malloc_h
1524     poll_h
1525     sndio_h
1526     soundcard_h
1527     stdatomic_h
1528     sys_mman_h
1529     sys_param_h
1530     sys_resource_h
1531     sys_select_h
1532     sys_soundcard_h
1533     sys_time_h
1534     sys_un_h
1535     sys_videoio_h
1536     unistd_h
1537     valgrind_valgrind_h
1538     windows_h
1539     winsock2_h
1540 "
1541
1542 INTRINSICS_LIST="
1543     intrinsics_neon
1544 "
1545
1546 MATH_FUNCS="
1547     atanf
1548     atan2f
1549     cbrtf
1550     cosf
1551     exp2
1552     exp2f
1553     expf
1554     isinf
1555     isnan
1556     ldexpf
1557     llrint
1558     llrintf
1559     log2
1560     log2f
1561     log10f
1562     lrint
1563     lrintf
1564     powf
1565     rint
1566     round
1567     roundf
1568     sinf
1569     trunc
1570     truncf
1571 "
1572
1573 SYSTEM_FUNCS="
1574     aligned_malloc
1575     clock_gettime
1576     closesocket
1577     CommandLineToArgvW
1578     CoTaskMemFree
1579     CryptGenRandom
1580     dlopen
1581     fcntl
1582     flt_lim
1583     fork
1584     getaddrinfo
1585     gethrtime
1586     getopt
1587     GetProcessAffinityMask
1588     GetProcessMemoryInfo
1589     GetProcessTimes
1590     getrusage
1591     GetSystemTimeAsFileTime
1592     gettimeofday
1593     gmtime_r
1594     inet_aton
1595     isatty
1596     jack_port_get_latency_range
1597     LoadLibrary
1598     localtime_r
1599     mach_absolute_time
1600     MapViewOfFile
1601     memalign
1602     mkstemp
1603     mmap
1604     mprotect
1605     nanosleep
1606     posix_memalign
1607     sched_getaffinity
1608     SetConsoleTextAttribute
1609     setmode
1610     setrlimit
1611     Sleep
1612     strerror_r
1613     sysconf
1614     sysctl
1615     usleep
1616     VirtualAlloc
1617 "
1618
1619 TOOLCHAIN_FEATURES="
1620     as_dn_directive
1621     as_fpu_directive
1622     as_func
1623     as_object_arch
1624     asm_mod_q
1625     attribute_may_alias
1626     attribute_packed
1627     ebp_available
1628     ebx_available
1629     gnu_as
1630     ibm_asm
1631     inline_asm_labels
1632     pragma_deprecated
1633     symver_asm_label
1634     symver_gnu_asm
1635     vfp_args
1636     xform_asm
1637     xmm_clobbers
1638 "
1639
1640 TYPES_LIST="
1641     CONDITION_VARIABLE_Ptr
1642     socklen_t
1643     struct_addrinfo
1644     struct_group_source_req
1645     struct_ip_mreq_source
1646     struct_ipv6_mreq
1647     struct_pollfd
1648     struct_rusage_ru_maxrss
1649     struct_sockaddr_in6
1650     struct_sockaddr_sa_len
1651     struct_sockaddr_storage
1652     struct_v4l2_frmivalenum_discrete
1653 "
1654
1655 HAVE_LIST="
1656     $ARCH_EXT_LIST
1657     $(add_suffix _external $ARCH_EXT_LIST)
1658     $(add_suffix _inline   $ARCH_EXT_LIST)
1659     $ARCH_FEATURES
1660     $BUILTIN_LIST
1661     $HAVE_LIST_CMDLINE
1662     $HAVE_LIST_PUB
1663     $HEADERS_LIST
1664     $INTRINSICS_LIST
1665     $MATH_FUNCS
1666     $SYSTEM_FUNCS
1667     $THREADS_LIST
1668     $TOOLCHAIN_FEATURES
1669     $TYPES_LIST
1670     dos_paths
1671     dxva2_lib
1672     libc_msvcrt
1673     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1674     sdl
1675     section_data_rel_ro
1676     threads
1677     vaapi_drm
1678     vaapi_x11
1679     vdpau_x11
1680 "
1681
1682 # options emitted with CONFIG_ prefix but not available on the command line
1683 CONFIG_EXTRA="
1684     aandcttables
1685     ac3dsp
1686     audio_frame_queue
1687     audiodsp
1688     blockdsp
1689     bswapdsp
1690     cabac
1691     dirac_parse
1692     dvprofile
1693     faandct
1694     faanidct
1695     fdctdsp
1696     flacdsp
1697     fmtconvert
1698     g722dsp
1699     gmp
1700     golomb
1701     gplv3
1702     h263dsp
1703     h264chroma
1704     h264dsp
1705     h264parse
1706     h264pred
1707     h264qpel
1708     hpeldsp
1709     huffman
1710     huffyuvdsp
1711     huffyuvencdsp
1712     idctdsp
1713     iirfilter
1714     imdct15
1715     intrax8
1716     iso_media
1717     ividsp
1718     jpegtables
1719     libx262
1720     lgplv3
1721     lpc
1722     lzf
1723     me_cmp
1724     mpeg_er
1725     mpegaudio
1726     mpegaudiodsp
1727     mpegaudioheader
1728     mpegvideo
1729     mpegvideoenc
1730     mss34dsp
1731     pixblockdsp
1732     qpeldsp
1733     qsv
1734     qsvdec
1735     qsvenc
1736     rangecoder
1737     riffdec
1738     riffenc
1739     rtpdec
1740     rtpenc_chain
1741     rv34dsp
1742     sinewin
1743     snappy
1744     srtp
1745     startcode
1746     texturedsp
1747     texturedspenc
1748     tpeldsp
1749     vaapi_encode
1750     vc1dsp
1751     videodsp
1752     vp3dsp
1753     vp56dsp
1754     vp8dsp
1755     wma_freqs
1756     wmv2dsp
1757 "
1758
1759 CMDLINE_SELECT="
1760     $ARCH_EXT_LIST
1761     $CONFIG_LIST
1762     $HAVE_LIST_CMDLINE
1763     $THREADS_LIST
1764     asm
1765     cross_compile
1766     debug
1767     extra_warnings
1768     logging
1769     lto
1770     optimizations
1771     rpath
1772 "
1773
1774 PATHS_LIST="
1775     bindir
1776     datadir
1777     docdir
1778     incdir
1779     libdir
1780     mandir
1781     prefix
1782     shlibdir
1783 "
1784
1785 CMDLINE_SET="
1786     $PATHS_LIST
1787     ar
1788     arch
1789     as
1790     cc
1791     objcc
1792     cpu
1793     cross_prefix
1794     custom_allocator
1795     dep_cc
1796     env
1797     extra_version
1798     host_cc
1799     host_cflags
1800     host_ld
1801     host_ldflags
1802     host_libs
1803     host_os
1804     ld
1805     logfile
1806     malloc_prefix
1807     nm
1808     optflags
1809     pkg_config
1810     pkg_config_flags
1811     random_seed
1812     samples
1813     sysinclude
1814     sysroot
1815     target_exec
1816     target_os
1817     target_path
1818     target_samples
1819     toolchain
1820 "
1821
1822 CMDLINE_APPEND="
1823     extra_cflags
1824     extra_objcflags
1825     host_cppflags
1826 "
1827
1828 # code dependency declarations
1829
1830 # architecture extensions
1831
1832 armv5te_deps="arm"
1833 armv6_deps="arm"
1834 armv6t2_deps="arm"
1835 armv8_deps="aarch64"
1836 neon_deps_any="aarch64 arm"
1837 intrinsics_neon_deps="neon"
1838 vfp_deps_any="aarch64 arm"
1839 vfpv3_deps="vfp"
1840
1841 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1842
1843 altivec_deps="ppc"
1844 ppc4xx_deps="ppc"
1845 vsx_deps="altivec"
1846 power8_deps="vsx"
1847
1848 cpunop_deps="i686"
1849 x86_64_select="i686"
1850 x86_64_suggest="fast_cmov"
1851
1852 amd3dnow_deps="mmx"
1853 amd3dnowext_deps="amd3dnow"
1854 i686_deps="x86"
1855 mmx_deps="x86"
1856 mmxext_deps="mmx"
1857 sse_deps="mmxext"
1858 sse2_deps="sse"
1859 sse3_deps="sse2"
1860 ssse3_deps="sse3"
1861 sse4_deps="ssse3"
1862 sse42_deps="sse4"
1863 avx_deps="sse42"
1864 xop_deps="avx"
1865 fma3_deps="avx"
1866 fma4_deps="avx"
1867 avx2_deps="avx"
1868
1869 mmx_external_deps="yasm"
1870 mmx_inline_deps="inline_asm"
1871 mmx_suggest="mmx_external mmx_inline"
1872
1873 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1874     eval dep=\$${ext}_deps
1875     eval ${ext}_external_deps='"${dep}_external"'
1876     eval ${ext}_inline_deps='"${dep}_inline"'
1877     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1878 done
1879
1880 aligned_stack_if_any="aarch64 ppc x86"
1881 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1882 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1883 fast_unaligned_if_any="aarch64 ppc x86"
1884 simd_align_16_if_any="altivec neon sse"
1885 simd_align_32_if_any="avx"
1886
1887 # system capabilities
1888 symver_if_any="symver_asm_label symver_gnu_asm"
1889 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1890
1891 # threading support
1892 atomics_gcc_if="sync_val_compare_and_swap"
1893 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1894 atomics_win32_if="MemoryBarrier"
1895 atomics_native_if_any="$ATOMICS_LIST"
1896 w32threads_deps="atomics_native"
1897 threads_if_any="$THREADS_LIST"
1898
1899 # subsystems
1900 dct_select="rdft"
1901 dirac_parse_select="golomb"
1902 error_resilience_select="me_cmp"
1903 faandct_deps="faan fdctdsp"
1904 faanidct_deps="faan idctdsp"
1905 h264dsp_select="startcode"
1906 intrax8_select="blockdsp idctdsp"
1907 mdct_select="fft"
1908 rdft_select="fft"
1909 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1910 mpeg_er_select="error_resilience"
1911 mpegaudio_select="mpegaudiodsp mpegaudioheader"
1912 mpegaudiodsp_select="dct"
1913 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1914 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1915 vc1dsp_select="h264chroma qpeldsp startcode"
1916
1917 # decoders / encoders
1918 aac_decoder_select="imdct15 mdct sinewin"
1919 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1920 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1921 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1922 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1923 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1924 adpcm_g722_decoder_select="g722dsp"
1925 adpcm_g722_encoder_select="g722dsp"
1926 aic_decoder_select="golomb idctdsp"
1927 alac_encoder_select="lpc"
1928 als_decoder_select="bswapdsp"
1929 amrnb_decoder_select="lsp"
1930 amrwb_decoder_select="lsp"
1931 amv_decoder_select="sp5x_decoder"
1932 ape_decoder_select="bswapdsp"
1933 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1934 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1935 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1936 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1937 atrac1_decoder_select="mdct sinewin"
1938 atrac3_decoder_select="mdct"
1939 atrac3p_decoder_select="mdct sinewin"
1940 bink_decoder_select="blockdsp hpeldsp"
1941 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1942 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1943 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1944 cllc_decoder_select="bswapdsp"
1945 comfortnoise_encoder_select="lpc"
1946 cook_decoder_select="audiodsp mdct sinewin"
1947 cscd_decoder_select="lzo"
1948 cscd_decoder_suggest="zlib"
1949 dca_decoder_select="fmtconvert mdct"
1950 dds_decoder_select="texturedsp"
1951 dnxhd_decoder_select="blockdsp idctdsp"
1952 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1953 dvvideo_decoder_select="dvprofile idctdsp"
1954 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1955 dxa_decoder_deps="zlib"
1956 dxv_decoder_select="lzf texturedsp"
1957 eac3_decoder_select="ac3_decoder"
1958 eac3_encoder_select="ac3_encoder"
1959 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1960 eatgq_decoder_select="aandcttables idctdsp"
1961 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
1962 exr_decoder_deps="zlib"
1963 ffv1_decoder_select="golomb rangecoder"
1964 ffv1_encoder_select="rangecoder"
1965 ffvhuff_decoder_select="huffyuv_decoder"
1966 ffvhuff_encoder_select="huffyuv_encoder"
1967 fic_decoder_select="golomb"
1968 flac_decoder_select="flacdsp golomb"
1969 flac_encoder_select="bswapdsp flacdsp golomb lpc"
1970 flashsv_decoder_deps="zlib"
1971 flashsv_encoder_deps="zlib"
1972 flashsv2_decoder_deps="zlib"
1973 flv_decoder_select="h263_decoder"
1974 flv_encoder_select="h263_encoder"
1975 fourxm_decoder_select="blockdsp bswapdsp"
1976 fraps_decoder_select="bswapdsp huffman"
1977 g2m_decoder_deps="zlib"
1978 g2m_decoder_select="blockdsp idctdsp jpegtables"
1979 h261_decoder_select="mpeg_er mpegvideo"
1980 h261_encoder_select="aandcttables mpegvideoenc"
1981 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1982 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1983 h263i_decoder_select="h263_decoder"
1984 h263p_encoder_select="h263_encoder"
1985 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
1986 h264_decoder_suggest="error_resilience"
1987 hap_decoder_select="snappy texturedsp"
1988 hap_encoder_deps="libsnappy"
1989 hap_encoder_select="texturedspenc"
1990 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1991 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1992 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1993 iac_decoder_select="imc_decoder"
1994 imc_decoder_select="bswapdsp fft mdct sinewin"
1995 indeo3_decoder_select="hpeldsp"
1996 indeo4_decoder_select="ividsp"
1997 indeo5_decoder_select="ividsp"
1998 interplay_video_decoder_select="hpeldsp"
1999 jpegls_decoder_select="golomb mjpeg_decoder"
2000 jpegls_encoder_select="golomb"
2001 jv_decoder_select="blockdsp"
2002 lagarith_decoder_select="huffyuvdsp"
2003 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2004 loco_decoder_select="golomb"
2005 magicyuv_decoder_select="huffyuvdsp"
2006 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2007 metasound_decoder_select="lsp mdct sinewin"
2008 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2009 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2010 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2011 mjpegb_decoder_select="mjpeg_decoder"
2012 mlp_decoder_select="mlp_parser"
2013 motionpixels_decoder_select="bswapdsp"
2014 mp1_decoder_select="mpegaudio"
2015 mp1float_decoder_select="mpegaudio"
2016 mp2_decoder_select="mpegaudio"
2017 mp2float_decoder_select="mpegaudio"
2018 mp3_decoder_select="mpegaudio"
2019 mp3adu_decoder_select="mpegaudio"
2020 mp3adufloat_decoder_select="mpegaudio"
2021 mp3float_decoder_select="mpegaudio"
2022 mp3on4_decoder_select="mpegaudio"
2023 mp3on4float_decoder_select="mpegaudio"
2024 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2025 mpc8_decoder_select="mpegaudiodsp"
2026 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2027 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2028 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2029 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2030 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2031 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2032 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2033 mpeg4_encoder_select="h263_encoder"
2034 msa1_decoder_select="mss34dsp"
2035 msmpeg4v1_decoder_select="h263_decoder"
2036 msmpeg4v2_decoder_select="h263_decoder"
2037 msmpeg4v2_encoder_select="h263_encoder"
2038 msmpeg4v3_decoder_select="h263_decoder"
2039 msmpeg4v3_encoder_select="h263_encoder"
2040 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2041 mts2_decoder_select="mss34dsp"
2042 mxpeg_decoder_select="mjpeg_decoder"
2043 nellymoser_decoder_select="mdct sinewin"
2044 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2045 nuv_decoder_select="idctdsp lzo"
2046 on2avc_decoder_select="mdct"
2047 opus_decoder_deps="avresample"
2048 opus_decoder_select="imdct15"
2049 png_decoder_deps="zlib"
2050 png_encoder_deps="zlib"
2051 png_encoder_select="huffyuvencdsp"
2052 prores_decoder_select="idctdsp"
2053 prores_encoder_select="fdctdsp"
2054 qcelp_decoder_select="lsp"
2055 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2056 ra_144_encoder_select="audio_frame_queue lpc"
2057 ralf_decoder_select="golomb"
2058 rscc_decoder_deps="zlib"
2059 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2060 rv10_encoder_select="h263_encoder"
2061 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2062 rv20_encoder_select="h263_encoder"
2063 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2064 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2065 screenpresso_decoder_deps="zlib"
2066 shorten_decoder_select="golomb"
2067 sipr_decoder_select="lsp"
2068 sp5x_decoder_select="mjpeg_decoder"
2069 svq1_decoder_select="hpeldsp"
2070 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2071 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2072 svq3_decoder_suggest="zlib"
2073 tak_decoder_select="audiodsp"
2074 tdsc_decoder_deps="zlib"
2075 tdsc_decoder_select="mjpeg_decoder"
2076 theora_decoder_select="vp3_decoder"
2077 thp_decoder_select="mjpeg_decoder"
2078 tiff_decoder_suggest="zlib"
2079 tiff_encoder_suggest="zlib"
2080 truehd_decoder_select="mlp_decoder"
2081 truemotion2_decoder_select="bswapdsp"
2082 truespeech_decoder_select="bswapdsp"
2083 tscc_decoder_deps="zlib"
2084 txd_decoder_select="texturedsp"
2085 twinvq_decoder_select="mdct lsp sinewin"
2086 utvideo_decoder_select="bswapdsp"
2087 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2088 vble_decoder_select="huffyuvdsp"
2089 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2090 vc1image_decoder_select="vc1_decoder"
2091 vorbis_decoder_select="mdct"
2092 vorbis_encoder_select="mdct"
2093 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2094 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2095 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2096 vp6a_decoder_select="vp6_decoder"
2097 vp6f_decoder_select="vp6_decoder"
2098 vp7_decoder_select="h264pred videodsp vp8dsp"
2099 vp8_decoder_select="h264pred videodsp vp8dsp"
2100 vp9_decoder_select="videodsp"
2101 webp_decoder_select="vp8_decoder"
2102 wmapro_decoder_select="mdct sinewin wma_freqs"
2103 wmav1_decoder_select="mdct sinewin wma_freqs"
2104 wmav1_encoder_select="mdct sinewin wma_freqs"
2105 wmav2_decoder_select="mdct sinewin wma_freqs"
2106 wmav2_encoder_select="mdct sinewin wma_freqs"
2107 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2108 wmv1_decoder_select="h263_decoder"
2109 wmv1_encoder_select="h263_encoder"
2110 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2111 wmv2_encoder_select="h263_encoder wmv2dsp"
2112 wmv3_decoder_select="vc1_decoder"
2113 wmv3image_decoder_select="wmv3_decoder"
2114 zerocodec_decoder_deps="zlib"
2115 zlib_decoder_deps="zlib"
2116 zlib_encoder_deps="zlib"
2117 zmbv_decoder_deps="zlib"
2118 zmbv_encoder_deps="zlib"
2119
2120 # hardware accelerators
2121 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2122 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2123 vaapi_deps="va_va_h"
2124 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2125 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2126 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2127
2128 h263_vaapi_hwaccel_deps="vaapi"
2129 h263_vaapi_hwaccel_select="h263_decoder"
2130 h264_d3d11va_hwaccel_deps="d3d11va"
2131 h264_d3d11va_hwaccel_select="h264_decoder"
2132 h264_dxva2_hwaccel_deps="dxva2"
2133 h264_dxva2_hwaccel_select="h264_decoder"
2134 h264_mmal_hwaccel_deps="mmal"
2135 h264_qsv_hwaccel_deps="libmfx"
2136 h264_vaapi_hwaccel_deps="vaapi"
2137 h264_vaapi_hwaccel_select="h264_decoder"
2138 h264_vda_hwaccel_deps="vda"
2139 h264_vda_hwaccel_select="h264_decoder"
2140 h264_vda_old_hwaccel_deps="vda"
2141 h264_vda_old_hwaccel_select="h264_decoder"
2142 h264_vdpau_hwaccel_deps="vdpau"
2143 h264_vdpau_hwaccel_select="h264_decoder"
2144 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2145 hevc_d3d11va_hwaccel_select="hevc_decoder"
2146 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2147 hevc_dxva2_hwaccel_select="hevc_decoder"
2148 hevc_qsv_hwaccel_deps="libmfx"
2149 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2150 hevc_vdpau_hwaccel_select="hevc_decoder"
2151 mpeg1_vdpau_hwaccel_deps="vdpau"
2152 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2153 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2154 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2155 mpeg2_dxva2_hwaccel_deps="dxva2"
2156 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2157 mpeg2_mmal_hwaccel_deps="mmal"
2158 mpeg2_qsv_hwaccel_deps="libmfx"
2159 mpeg2_vaapi_hwaccel_deps="vaapi"
2160 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2161 mpeg2_vdpau_hwaccel_deps="vdpau"
2162 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2163 mpeg4_vaapi_hwaccel_deps="vaapi"
2164 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2165 mpeg4_vdpau_hwaccel_deps="vdpau"
2166 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2167 vc1_d3d11va_hwaccel_deps="d3d11va"
2168 vc1_d3d11va_hwaccel_select="vc1_decoder"
2169 vc1_dxva2_hwaccel_deps="dxva2"
2170 vc1_dxva2_hwaccel_select="vc1_decoder"
2171 vc1_mmal_hwaccel_deps="mmal"
2172 vc1_qsv_hwaccel_deps="libmfx"
2173 vc1_vaapi_hwaccel_deps="vaapi"
2174 vc1_vaapi_hwaccel_select="vc1_decoder"
2175 vc1_vdpau_hwaccel_deps="vdpau"
2176 vc1_vdpau_hwaccel_select="vc1_decoder"
2177 vp8_qsv_hwaccel_deps="libmfx"
2178 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2179 vp8_vaapi_hwaccel_select="vp8_decoder"
2180 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2181 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2182 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2183 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2184
2185 # hardware-accelerated codecs
2186 nvenc_deps_any="dlopen LoadLibrary"
2187 nvenc_extralibs='$ldl'
2188 omx_deps="dlopen pthreads"
2189 omx_extralibs='$ldl'
2190 qsvdec_select="qsv"
2191 qsvenc_select="qsv"
2192 vaapi_encode_deps="vaapi"
2193
2194 hwupload_cuda_filter_deps="cuda"
2195 scale_npp_filter_deps="cuda libnpp"
2196
2197 h264_mmal_decoder_deps="mmal"
2198 h264_nvenc_encoder_deps="nvenc"
2199 h264_omx_encoder_deps="omx"
2200 h264_qsv_decoder_deps="libmfx"
2201 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2202 h264_qsv_encoder_deps="libmfx"
2203 h264_qsv_encoder_select="qsvenc"
2204 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2205 h264_vaapi_encoder_select="vaapi_encode golomb"
2206 hevc_nvenc_encoder_deps="nvenc"
2207 hevc_qsv_decoder_deps="libmfx"
2208 hevc_qsv_encoder_deps="libmfx"
2209 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2210 hevc_qsv_encoder_select="qsvenc"
2211 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2212 hevc_vaapi_encoder_select="vaapi_encode golomb"
2213 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2214 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2215 mpeg2_mmal_decoder_deps="mmal"
2216 mpeg2_qsv_decoder_deps="libmfx"
2217 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2218 mpeg2_qsv_encoder_deps="libmfx"
2219 mpeg2_qsv_encoder_select="qsvenc"
2220 mpeg4_omx_encoder_deps="omx"
2221 vc1_mmal_decoder_deps="mmal"
2222 vc1_qsv_decoder_deps="libmfx"
2223 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2224 vp8_qsv_decoder_deps="libmfx"
2225 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2226
2227 nvenc_h264_encoder_deps="nvenc"
2228 nvenc_hevc_encoder_deps="nvenc"
2229
2230 # parsers
2231 h264_parser_select="golomb h264dsp h264parse"
2232 hevc_parser_select="golomb"
2233 mpegaudio_parser_select="mpegaudioheader"
2234 mpegvideo_parser_select="mpegvideo"
2235 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2236 vc1_parser_select="vc1dsp"
2237
2238 # bitstream_filters
2239 mjpeg2jpeg_bsf_select="jpegtables"
2240
2241 # external libraries
2242 libdcadec_decoder_deps="libdcadec"
2243 libfaac_encoder_deps="libfaac"
2244 libfaac_encoder_select="audio_frame_queue"
2245 libfdk_aac_decoder_deps="libfdk_aac"
2246 libfdk_aac_encoder_deps="libfdk_aac"
2247 libfdk_aac_encoder_select="audio_frame_queue"
2248 libgsm_decoder_deps="libgsm"
2249 libgsm_encoder_deps="libgsm"
2250 libgsm_ms_decoder_deps="libgsm"
2251 libgsm_ms_encoder_deps="libgsm"
2252 libilbc_decoder_deps="libilbc"
2253 libilbc_encoder_deps="libilbc"
2254 libkvazaar_encoder_deps="libkvazaar"
2255 libmp3lame_encoder_deps="libmp3lame"
2256 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2257 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2258 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2259 libopencore_amrnb_encoder_select="audio_frame_queue"
2260 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2261 libopenh264_decoder_deps="libopenh264"
2262 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2263 libopenh264_encoder_deps="libopenh264"
2264 libopenjpeg_decoder_deps="libopenjpeg"
2265 libopenjpeg_encoder_deps="libopenjpeg"
2266 libopus_decoder_deps="libopus"
2267 libopus_encoder_deps="libopus"
2268 libopus_encoder_select="audio_frame_queue"
2269 libschroedinger_decoder_deps="libschroedinger"
2270 libschroedinger_encoder_deps="libschroedinger"
2271 libspeex_decoder_deps="libspeex"
2272 libspeex_encoder_deps="libspeex"
2273 libspeex_encoder_select="audio_frame_queue"
2274 libtheora_encoder_deps="libtheora"
2275 libtwolame_encoder_deps="libtwolame"
2276 libvo_aacenc_encoder_deps="libvo_aacenc"
2277 libvo_aacenc_encoder_select="audio_frame_queue"
2278 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2279 libvorbis_encoder_deps="libvorbis"
2280 libvorbis_encoder_select="audio_frame_queue"
2281 libvpx_vp8_decoder_deps="libvpx"
2282 libvpx_vp8_encoder_deps="libvpx"
2283 libvpx_vp9_decoder_deps="libvpx"
2284 libvpx_vp9_encoder_deps="libvpx"
2285 libwavpack_encoder_deps="libwavpack"
2286 libwebp_encoder_deps="libwebp"
2287 libx262_encoder_deps="libx262"
2288 libx264_encoder_deps="libx264"
2289 libx265_encoder_deps="libx265"
2290 libxavs_encoder_deps="libxavs"
2291 libxvid_encoder_deps="libxvid mkstemp"
2292
2293 # demuxers / muxers
2294 ac3_demuxer_select="ac3_parser"
2295 asf_demuxer_select="riffdec"
2296 asf_muxer_select="riffenc"
2297 asf_stream_muxer_select="asf_muxer"
2298 avi_demuxer_select="iso_media riffdec"
2299 avi_muxer_select="riffenc"
2300 avisynth_demuxer_deps="avisynth"
2301 avisynth_demuxer_select="riffdec"
2302 caf_demuxer_select="iso_media riffdec"
2303 dash_muxer_select="mp4_muxer"
2304 dirac_demuxer_select="dirac_parser"
2305 dv_demuxer_select="dvprofile"
2306 dv_muxer_select="dvprofile"
2307 dxa_demuxer_select="riffdec"
2308 eac3_demuxer_select="ac3_parser"
2309 f4v_muxer_select="mov_muxer"
2310 flac_demuxer_select="flac_parser"
2311 hds_muxer_select="flv_muxer"
2312 hls_muxer_select="mpegts_muxer"
2313 ipod_muxer_select="mov_muxer"
2314 ismv_muxer_select="mov_muxer"
2315 matroska_audio_muxer_select="matroska_muxer"
2316 matroska_demuxer_select="iso_media riffdec"
2317 matroska_demuxer_suggest="bzlib lzo zlib"
2318 matroska_muxer_select="iso_media riffenc"
2319 mmf_muxer_select="riffenc"
2320 mov_demuxer_select="iso_media riffdec"
2321 mov_demuxer_suggest="zlib"
2322 mov_muxer_select="iso_media riffenc rtpenc_chain"
2323 mp3_demuxer_select="mpegaudio_parser"
2324 mp3_muxer_select="mpegaudioheader"
2325 mp4_muxer_select="mov_muxer"
2326 mpegts_demuxer_select="iso_media"
2327 mpegts_muxer_select="adts_muxer latm_muxer"
2328 mpegtsraw_demuxer_select="mpegts_demuxer"
2329 mxf_d10_muxer_select="mxf_muxer"
2330 nut_muxer_select="riffenc"
2331 nuv_demuxer_select="riffdec"
2332 oga_muxer_select="ogg_muxer"
2333 ogg_demuxer_select="dirac_parse"
2334 opus_muxer_select="ogg_muxer"
2335 psp_muxer_select="mov_muxer"
2336 rtp_demuxer_select="sdp_demuxer"
2337 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2338 rtsp_demuxer_select="http_protocol rtpdec"
2339 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2340 sap_demuxer_select="sdp_demuxer"
2341 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2342 sdp_demuxer_select="rtpdec"
2343 smoothstreaming_muxer_select="ismv_muxer"
2344 spdif_muxer_select="aac_parser"
2345 spx_muxer_select="ogg_muxer"
2346 swf_demuxer_suggest="zlib"
2347 tak_demuxer_select="tak_parser"
2348 tg2_muxer_select="mov_muxer"
2349 tgp_muxer_select="mov_muxer"
2350 w64_demuxer_select="wav_demuxer"
2351 wav_demuxer_select="riffdec"
2352 wav_muxer_select="riffenc"
2353 webm_muxer_select="iso_media riffenc"
2354 webm_muxer_suggest="libopus_encoder libvorbis_encoder libvpx_vp8_encoder libvpx_vp9_encoder"
2355 wtv_demuxer_select="mpegts_demuxer riffdec"
2356 xmv_demuxer_select="riffdec"
2357 xwma_demuxer_select="riffdec"
2358
2359 # indevs / outdevs
2360 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2361 alsa_outdev_deps="alsa_asoundlib_h"
2362 avfoundation_indev_deps="AVFoundation_AVFoundation_h"
2363 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2364 dv1394_indev_deps="dv1394"
2365 dv1394_indev_select="dv_demuxer"
2366 fbdev_indev_deps="linux_fb_h"
2367 jack_indev_deps="jack_jack_h"
2368 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2369 libcdio_indev_deps="libcdio"
2370 libdc1394_indev_deps="libdc1394"
2371 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2372 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2373 pulse_indev_deps="libpulse"
2374 sndio_indev_deps="sndio_h"
2375 sndio_outdev_deps="sndio_h"
2376 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2377 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2378 vfwcap_indev_extralibs="-lavicap32"
2379 xcbgrab_indev_deps="libxcb"
2380
2381 # protocols
2382 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2383 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2384 ffrtmpcrypt_protocol_select="tcp_protocol"
2385 ffrtmphttp_protocol_deps="!librtmp_protocol"
2386 ffrtmphttp_protocol_select="http_protocol"
2387 gopher_protocol_select="network"
2388 http_protocol_select="tcp_protocol"
2389 httpproxy_protocol_select="tcp_protocol"
2390 https_protocol_select="tls_protocol"
2391 icecast_protocol_select="http_protocol"
2392 librtmp_protocol_deps="librtmp"
2393 librtmpe_protocol_deps="librtmp"
2394 librtmps_protocol_deps="librtmp"
2395 librtmpt_protocol_deps="librtmp"
2396 librtmpte_protocol_deps="librtmp"
2397 mmsh_protocol_select="http_protocol"
2398 mmst_protocol_select="network"
2399 rtmp_protocol_deps="!librtmp_protocol"
2400 rtmp_protocol_select="tcp_protocol"
2401 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2402 rtmps_protocol_deps="!librtmp_protocol"
2403 rtmps_protocol_select="tls_protocol"
2404 rtmpt_protocol_select="ffrtmphttp_protocol"
2405 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2406 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2407 rtp_protocol_select="udp_protocol"
2408 sctp_protocol_deps="struct_sctp_event_subscribe"
2409 sctp_protocol_select="network"
2410 srtp_protocol_select="rtp_protocol srtp"
2411 tcp_protocol_select="network"
2412 tls_gnutls_protocol_deps="gnutls"
2413 tls_gnutls_protocol_select="tcp_protocol"
2414 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2415 tls_openssl_protocol_select="tcp_protocol"
2416 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2417 udp_protocol_select="network"
2418 unix_protocol_deps="sys_un_h"
2419 unix_protocol_select="network"
2420
2421 # filters
2422 asyncts_filter_deps="avresample"
2423 blackframe_filter_deps="gpl"
2424 boxblur_filter_deps="gpl"
2425 bs2b_filter_deps="libbs2b"
2426 cropdetect_filter_deps="gpl"
2427 deinterlace_qsv_filter_deps="libmfx"
2428 delogo_filter_deps="gpl"
2429 drawtext_filter_deps="libfreetype"
2430 frei0r_filter_deps="frei0r dlopen"
2431 frei0r_filter_extralibs='$ldl'
2432 frei0r_src_filter_deps="frei0r dlopen"
2433 frei0r_src_filter_extralibs='$ldl'
2434 hdcd_filter_deps="libhdcd"
2435 hqdn3d_filter_deps="gpl"
2436 interlace_filter_deps="gpl"
2437 movie_filter_deps="avcodec avformat"
2438 ocv_filter_deps="libopencv"
2439 resample_filter_deps="avresample"
2440 scale_filter_deps="swscale"
2441 scale_qsv_filter_deps="libmfx"
2442 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2443
2444 # examples
2445 decode_audio_example_deps="avcodec avutil"
2446 decode_video_example_deps="avcodec avutil"
2447 encode_audio_example_deps="avcodec avutil"
2448 encode_video_example_deps="avcodec avutil"
2449 filter_audio_example_deps="avfilter avutil"
2450 metadata_example_deps="avformat avutil"
2451 output_example_deps="avcodec avformat avresample avutil swscale"
2452 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2453 transcode_aac_example_deps="avcodec avformat avresample"
2454
2455 # libraries, in linking order
2456 avcodec_deps="avutil"
2457 avdevice_deps="avformat avcodec avutil"
2458 avfilter_deps="avutil"
2459 avformat_deps="avcodec avutil"
2460 avresample_deps="avutil"
2461 swscale_deps="avutil"
2462
2463 # programs
2464 avconv_deps="avcodec avfilter avformat avresample swscale"
2465 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2466                fps_filter null_filter resample_filter scale_filter
2467                trim_filter"
2468 avplay_deps="avcodec avfilter avformat avresample sdl"
2469 avplay_libs='$sdl_libs'
2470 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2471 avprobe_deps="avcodec avformat"
2472
2473 # documentation
2474 pod2man_deps="doc"
2475 texi2html_deps="doc"
2476
2477 # default parameters
2478
2479 logfile="config.log"
2480
2481 # installation paths
2482 prefix_default="/usr/local"
2483 bindir_default='${prefix}/bin'
2484 datadir_default='${prefix}/share/avconv'
2485 docdir_default='${prefix}/share/doc/libav'
2486 incdir_default='${prefix}/include'
2487 libdir_default='${prefix}/lib'
2488 mandir_default='${prefix}/share/man'
2489 shlibdir_default="$libdir_default"
2490
2491 # toolchain
2492 ar_default="ar"
2493 cc_default="gcc"
2494 host_cc_default="gcc"
2495 ln_s="ln -s -f"
2496 nm_default="nm -g"
2497 objformat="elf"
2498 pkg_config_default=pkg-config
2499 ranlib="ranlib"
2500 strip="strip"
2501 version_script='--version-script'
2502 yasmexe="yasm"
2503
2504 # machine
2505 arch_default=$(uname -m)
2506 cpu="generic"
2507 intrinsics="none"
2508
2509 # OS
2510 target_os_default=$(tolower $(uname -s))
2511 host_os=$target_os_default
2512
2513 # configurable options
2514 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2515
2516 enable asm
2517 enable debug
2518 enable doc
2519 enable faan faandct faanidct
2520 enable optimizations
2521 enable safe_bitstream_reader
2522 enable static
2523 enable swscale_alpha
2524 enable valgrind_backtrace
2525
2526 # By default, enable only those hwaccels that have no external dependencies.
2527 enable d3d11va dxva2 vda vdpau
2528
2529 # build settings
2530 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2531 LIBPREF="lib"
2532 LIBSUF=".a"
2533 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2534 SLIBPREF="lib"
2535 SLIBSUF=".so"
2536 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2537 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2538 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2539 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2540 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2541 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2542 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2543
2544 asflags_filter=echo
2545 cflags_filter=echo
2546 ldflags_filter=echo
2547
2548 AS_C='-c'
2549 AS_O='-o $@'
2550 CC_C='-c'
2551 CC_E='-E -o $@'
2552 CC_O='-o $@'
2553 OBJCC_C='-c'
2554 OBJCC_E='-E -o $@'
2555 OBJCC_O='-o $@'
2556 LD_O='-o $@'
2557 LD_LIB='-l%'
2558 LD_PATH='-L'
2559 HOSTCC_C='-c'
2560 HOSTCC_E='-E -o $@'
2561 HOSTCC_O='-o $@'
2562 HOSTLD_O='-o $@'
2563
2564 host_libs='-lm'
2565 host_cflags_filter=echo
2566 host_ldflags_filter=echo
2567
2568 target_path='$(CURDIR)'
2569
2570 # since the object filename is not given with the -MM flag, the compiler
2571 # is only able to print the basename, and we must add the path ourselves
2572 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2573 DEPFLAGS='-MM'
2574
2575 # find source path
2576 if test -f configure; then
2577     source_path=.
2578 else
2579     source_path=$(cd $(dirname "$0"); pwd)
2580     echo "$source_path" | grep -q '[[:blank:]]' &&
2581         die "Out of tree builds are impossible with whitespace in source path."
2582     test -e "$source_path/config.h" &&
2583         die "Out of tree builds are impossible with config.h in source dir."
2584 fi
2585
2586 for v in "$@"; do
2587     r=${v#*=}
2588     l=${v%"$r"}
2589     r=$(sh_quote "$r")
2590     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2591 done
2592
2593 find_things(){
2594     thing=$1
2595     pattern=$2
2596     file=$source_path/$3
2597     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2598 }
2599
2600 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2601 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2602 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2603 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2604 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2605 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2606 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2607 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2608 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2609
2610 find_things_extern(){
2611     thing=$1
2612     pattern=$2
2613     file=$source_path/$3
2614     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2615 }
2616
2617 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2618 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2619
2620 ALL_COMPONENTS="
2621     $BSF_LIST
2622     $DECODER_LIST
2623     $DEMUXER_LIST
2624     $ENCODER_LIST
2625     $FILTER_LIST
2626     $HWACCEL_LIST
2627     $INDEV_LIST
2628     $MUXER_LIST
2629     $OUTDEV_LIST
2630     $PARSER_LIST
2631     $PROTOCOL_LIST
2632 "
2633
2634 for n in $COMPONENT_LIST; do
2635     v=$(toupper ${n%s})_LIST
2636     eval enable \$$v
2637     eval ${n}_if_any="\$$v"
2638 done
2639
2640 enable $ARCH_EXT_LIST
2641
2642 die_unknown(){
2643     echo "Unknown option \"$1\"."
2644     echo "See $0 --help for available options."
2645     exit 1
2646 }
2647
2648 print_3_columns() {
2649     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2650 }
2651
2652 show_list() {
2653     suffix=_$1
2654     shift
2655     echo $* | sed s/$suffix//g | print_3_columns
2656     exit 0
2657 }
2658
2659 rand_list(){
2660     IFS=', '
2661     set -- $*
2662     unset IFS
2663     for thing; do
2664         comp=${thing%:*}
2665         prob=${thing#$comp}
2666         prob=${prob#:}
2667         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2668         echo "prob ${prob:-0.5}"
2669         printf '%s\n' $comp
2670     done
2671 }
2672
2673 do_random(){
2674     action=$1
2675     shift
2676     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2677     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2678 }
2679
2680 for opt do
2681     optval="${opt#*=}"
2682     case "$opt" in
2683         --extra-ldflags=*)
2684             add_ldflags $optval
2685         ;;
2686         --extra-ldexeflags=*)
2687             add_ldexeflags $optval
2688         ;;
2689         --extra-libs=*)
2690             add_extralibs $optval
2691         ;;
2692         --disable-devices)
2693             disable $INDEV_LIST $OUTDEV_LIST
2694         ;;
2695         --enable-debug=*)
2696             debuglevel="$optval"
2697         ;;
2698         --disable-programs)
2699             disable $PROGRAM_LIST
2700         ;;
2701         --disable-everything)
2702             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2703         ;;
2704         --disable-all)
2705             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2706             disable $LIBRARY_LIST $PROGRAM_LIST doc
2707         ;;
2708         --enable-random|--disable-random)
2709             action=${opt%%-random}
2710             do_random ${action#--} $COMPONENT_LIST
2711         ;;
2712         --enable-random=*|--disable-random=*)
2713             action=${opt%%-random=*}
2714             do_random ${action#--} $optval
2715         ;;
2716         --enable-*=*|--disable-*=*)
2717             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2718             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2719             eval list=\$$(toupper $thing)_LIST
2720             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2721             $action $(filter "$name" $list)
2722         ;;
2723         --enable-avserver|--disable-avserver*)
2724             warn "avserver has been removed, the ${opt} option is only"\
2725                  "provided for compatibility and will be removed in the future"
2726         ;;
2727         --enable-?*|--disable-?*)
2728             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2729             if is_in $option $COMPONENT_LIST; then
2730                 test $action = disable && action=unset
2731                 eval $action \$$(toupper ${option%s})_LIST
2732             elif is_in $option $CMDLINE_SELECT; then
2733                 $action $option
2734             else
2735                 die_unknown $opt
2736             fi
2737         ;;
2738         --list-*)
2739             NAME="${opt#--list-}"
2740             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2741             NAME=${NAME%s}
2742             eval show_list $NAME \$$(toupper $NAME)_LIST
2743         ;;
2744         --help|-h) show_help
2745         ;;
2746         --quiet|-q) quiet=yes
2747         ;;
2748         *)
2749             optname="${opt%%=*}"
2750             optname="${optname#--}"
2751             optname=$(echo "$optname" | sed 's/-/_/g')
2752             if is_in $optname $CMDLINE_SET; then
2753                 eval $optname='$optval'
2754             elif is_in $optname $CMDLINE_APPEND; then
2755                 append $optname "$optval"
2756             else
2757                 die_unknown $opt
2758             fi
2759         ;;
2760     esac
2761 done
2762
2763 for e in $env; do
2764     eval "export $e"
2765 done
2766
2767 disabled logging && logfile=/dev/null
2768
2769 # Die early if licensing-related configure options are incompatible.
2770 die_license_disabled() {
2771     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2772 }
2773
2774 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2775 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2776 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2777
2778 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2779
2780 # Disable all the library-specific components if the library itself
2781 # is disabled, see AVCODEC_LIST and following _LIST variables.
2782
2783 disable_components(){
2784     disabled ${1} && disable $(
2785         eval components="\$$(toupper ${1})_COMPONENTS"
2786         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2787     )
2788 }
2789
2790 map 'disable_components $v' $LIBRARY_LIST
2791
2792 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2793 set >> $logfile
2794
2795 case "$toolchain" in
2796     *-asan)
2797         cc_default="${toolchain%-asan}"
2798         add_cflags  -fsanitize=address
2799         add_ldflags -fsanitize=address
2800     ;;
2801     *-msan)
2802         cc_default="${toolchain%-msan}"
2803         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2804         add_ldflags -fsanitize=memory
2805     ;;
2806     *-tsan)
2807         cc_default="${toolchain%-tsan}"
2808         add_cflags  -fsanitize=thread -pie
2809         add_ldflags -fsanitize=thread -pie
2810         case "$toolchain" in
2811             gcc-tsan)
2812                 add_cflags  -fPIC
2813                 add_ldflags -fPIC
2814                 ;;
2815         esac
2816     ;;
2817     *-usan)
2818         cc_default="${toolchain%-usan}"
2819         add_cflags  -fsanitize=undefined
2820         add_ldflags -fsanitize=undefined
2821         case "$toolchain" in
2822             clang-usan)
2823                 add_cflags -O1
2824                 ;;
2825         esac
2826     ;;
2827     valgrind-*)
2828         target_exec_default="valgrind"
2829         case "$toolchain" in
2830             valgrind-massif)
2831                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2832                 ;;
2833             valgrind-memcheck)
2834                 target_exec_args="--track-origins=yes --leak-check=full"
2835                 ;;
2836         esac
2837     ;;
2838     msvc)
2839         # Check whether the current MSVC version needs the C99 converter.
2840         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2841         # support enough of C99 to build libav. Default to the new
2842         # behaviour if the regexp was unable to match anything, since this
2843         # successfully parses the version number of existing supported
2844         # versions that require the converter (MSVC 2010 and 2012).
2845         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2846         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2847             cc_default="cl"
2848         else
2849             cc_default="c99wrap cl"
2850         fi
2851         ld_default="$source_path/compat/windows/mslink"
2852         nm_default="dumpbin -symbols"
2853         ar_default="lib"
2854         case "$arch" in
2855         arm*)
2856             as_default="armasm"
2857             ;;
2858         esac
2859         target_os_default="win32"
2860         # Use a relative path for TMPDIR. This makes sure all the
2861         # ffconf temp files are written with a relative path, avoiding
2862         # issues with msys/win32 path conversion for MSVC parameters
2863         # such as -Fo<file> or -out:<file>.
2864         TMPDIR=.
2865     ;;
2866     icl)
2867         cc_default="icl"
2868         ld_default="xilink"
2869         nm_default="dumpbin -symbols"
2870         ar_default="xilib"
2871         target_os_default="win32"
2872         TMPDIR=.
2873     ;;
2874     gcov)
2875         add_cflags  -fprofile-arcs -ftest-coverage
2876         add_ldflags -fprofile-arcs -ftest-coverage
2877     ;;
2878     llvm-cov)
2879         add_cflags -fprofile-arcs -ftest-coverage
2880         add_ldflags --coverage
2881     ;;
2882     hardened)
2883         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2884         add_cflags   -fno-strict-overflow -fstack-protector-all
2885         add_ldflags  -Wl,-z,relro -Wl,-z,now
2886     ;;
2887     ?*)
2888         die "Unknown toolchain $toolchain"
2889     ;;
2890 esac
2891
2892 test -n "$cross_prefix" && enable cross_compile
2893
2894 if enabled cross_compile; then
2895     test -n "$arch" && test -n "$target_os" ||
2896         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
2897 fi
2898
2899 ar_default="${cross_prefix}${ar_default}"
2900 cc_default="${cross_prefix}${cc_default}"
2901 occ_default="${cross_prefix}${occ_default}"
2902 nm_default="${cross_prefix}${nm_default}"
2903 pkg_config_default="${cross_prefix}${pkg_config_default}"
2904 ranlib="${cross_prefix}${ranlib}"
2905 strip="${cross_prefix}${strip}"
2906
2907 sysinclude_default="${sysroot}/usr/include"
2908
2909 set_default arch cc pkg_config sysinclude target_exec target_os
2910 enabled cross_compile || host_cc_default=$cc
2911 set_default host_cc
2912
2913 if ! $pkg_config --version >/dev/null 2>&1; then
2914     warn "$pkg_config not found, library detection may fail."
2915     pkg_config=false
2916 fi
2917
2918 exesuf() {
2919     case $1 in
2920         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2921     esac
2922 }
2923
2924 EXESUF=$(exesuf $target_os)
2925 HOSTEXESUF=$(exesuf $host_os)
2926
2927 # set temporary file name
2928 : ${TMPDIR:=$TEMPDIR}
2929 : ${TMPDIR:=$TMP}
2930 : ${TMPDIR:=/tmp}
2931
2932 if ! check_cmd mktemp -u XXXXXX; then
2933     # simple replacement for missing mktemp
2934     # NOT SAFE FOR GENERAL USE
2935     mktemp(){
2936         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2937     }
2938 fi
2939
2940 tmpfile(){
2941     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2942         (set -C; exec > $tmp) 2>/dev/null ||
2943         die "Unable to create temporary file in $TMPDIR."
2944     append TMPFILES $tmp
2945     eval $1=$tmp
2946 }
2947
2948 trap 'rm -f -- $TMPFILES' EXIT
2949
2950 tmpfile TMPASM .asm
2951 tmpfile TMPC   .c
2952 tmpfile TMPE   $EXESUF
2953 tmpfile TMPH   .h
2954 tmpfile TMPO   .o
2955 tmpfile TMPS   .S
2956 tmpfile TMPSH  .sh
2957 tmpfile TMPV   .ver
2958
2959 unset -f mktemp
2960
2961 chmod +x $TMPE
2962
2963 # make sure we can execute files in $TMPDIR
2964 cat > $TMPSH 2>> $logfile <<EOF
2965 #! /bin/sh
2966 EOF
2967 chmod +x $TMPSH >> $logfile 2>&1
2968 if ! $TMPSH >> $logfile 2>&1; then
2969     cat <<EOF
2970 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2971 variable to another directory and make sure that it is not mounted noexec.
2972 EOF
2973     die "Sanity test failed."
2974 fi
2975
2976 armasm_flags(){
2977     for flag; do
2978         case $flag in
2979             # Filter out MSVC cl.exe options from cflags that shouldn't
2980             # be passed to gas-preprocessor
2981             -M[TD]*)                                            ;;
2982             *)                  echo $flag                      ;;
2983         esac
2984    done
2985 }
2986
2987 ccc_flags(){
2988     for flag; do
2989         case $flag in
2990             -std=c99)           echo -c99                       ;;
2991             -mcpu=*)            echo -arch ${flag#*=}           ;;
2992             -mieee)             echo -ieee                      ;;
2993             -O*|-fast)          echo $flag                      ;;
2994             -fno-math-errno)    echo -assume nomath_errno       ;;
2995             -g)                 echo -g3                        ;;
2996             -Wall)              echo -msg_enable level2         ;;
2997             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2998             -Wl,*)              echo $flag                      ;;
2999             -f*|-W*)                                            ;;
3000             *)                  echo $flag                      ;;
3001         esac
3002    done
3003 }
3004
3005 cparser_flags(){
3006     for flag; do
3007         case $flag in
3008             -Wno-switch)             echo -Wno-switch-enum ;;
3009             -Wno-format-zero-length) ;;
3010             -Wdisabled-optimization) ;;
3011             -Wno-pointer-sign)       echo -Wno-other ;;
3012             *)                       echo $flag ;;
3013         esac
3014     done
3015 }
3016
3017 msvc_common_flags(){
3018     for flag; do
3019         case $flag in
3020             # In addition to specifying certain flags under the compiler
3021             # specific filters, they must be specified here as well or else the
3022             # generic catch all at the bottom will print the original flag.
3023             -Wall)                ;;
3024             -std=c99)             ;;
3025             # Common flags
3026             -fomit-frame-pointer) ;;
3027             -g)                   echo -Z7 ;;
3028             -fno-math-errno)      ;;
3029             -fno-common)          ;;
3030             -fno-signed-zeros)    ;;
3031             -fPIC)                ;;
3032             -mthumb)              ;;
3033             -march=*)             ;;
3034             -lz)                  echo zlib.lib ;;
3035             -lavicap32)           echo vfw32.lib user32.lib ;;
3036             -lx264)               echo libx264.lib ;;
3037             -l*)                  echo ${flag#-l}.lib ;;
3038             -L*)                  echo -libpath:${flag#-L} ;;
3039             *)                    echo $flag ;;
3040         esac
3041     done
3042 }
3043
3044 msvc_flags(){
3045     msvc_common_flags "$@"
3046     for flag; do
3047         case $flag in
3048             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3049                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3050                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3051                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3052         esac
3053     done
3054 }
3055
3056 icl_flags(){
3057     msvc_common_flags "$@"
3058     for flag; do
3059         case $flag in
3060             # Despite what Intel's documentation says -Wall, which is supported
3061             # on Windows, does enable remarks so disable them here.
3062             -Wall)                echo $flag -Qdiag-disable:remark ;;
3063             -std=c99)             echo -Qstd=c99 ;;
3064         esac
3065     done
3066 }
3067
3068 pgi_flags(){
3069     for flag; do
3070         case $flag in
3071             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3072             -fomit-frame-pointer) echo -Mnoframe ;;
3073             -g)                   echo -gopt ;;
3074             *)                    echo $flag ;;
3075         esac
3076     done
3077 }
3078
3079 suncc_flags(){
3080     for flag; do
3081         case $flag in
3082             -march=*|-mcpu=*)
3083                 case "${flag#*=}" in
3084                     native)                   echo -xtarget=native       ;;
3085                     v9|niagara)               echo -xarch=sparc          ;;
3086                     ultrasparc)               echo -xarch=sparcvis       ;;
3087                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3088                     i586|pentium)             echo -xchip=pentium        ;;
3089                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3090                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3091                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3092                     pentium4*)          echo -xtarget=pentium4           ;;
3093                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3094                     *-sse3)             echo -xarch=sse3                 ;;
3095                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3096                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3097                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3098                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3099                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3100                     k8|opteron|athlon64|athlon-fx)
3101                                                echo -xarch=sse2a         ;;
3102                     athlon*)                   echo -xarch=pentium_proa  ;;
3103                 esac
3104                 ;;
3105             -std=c99)             echo -xc99              ;;
3106             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3107             -fPIC)                echo -KPIC -xcode=pic32 ;;
3108             -W*,*)                echo $flag              ;;
3109             -f*-*|-W*|-mimpure-text)                      ;;
3110             -shared)              echo -G                 ;;
3111             *)                    echo $flag              ;;
3112         esac
3113     done
3114 }
3115
3116 tms470_flags(){
3117     for flag; do
3118         case $flag in
3119             -march=*|-mcpu=*)
3120                 case "${flag#*=}" in
3121                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3122                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3123                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3124                     armv6*|arm11*)          echo -mv=6   ;;
3125                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3126                                             echo -mv=5e  ;;
3127                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3128                 esac
3129                 ;;
3130             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3131             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3132             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3133             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3134             -msoft-float)   echo --float_support=vfplib       ;;
3135             -O[0-3]|-mf=*)  echo $flag                        ;;
3136             -g)             echo -g -mn                       ;;
3137             -pds=*)         echo $flag                        ;;
3138             -D*|-I*)        echo $flag                        ;;
3139             --gcc|--abi=*)  echo $flag                        ;;
3140             -me)            echo $flag                        ;;
3141         esac
3142     done
3143 }
3144
3145 probe_cc(){
3146     pfx=$1
3147     _cc=$2
3148
3149     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3150     unset _ld_o _ldflags _ld_lib _ld_path
3151     unset _depflags _DEPCMD _DEPFLAGS
3152     _flags_filter=echo
3153
3154     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3155         _type=llvm_gcc
3156         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3157         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3158         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3159         _cflags_speed='-O3'
3160         _cflags_size='-Os'
3161     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3162         _type=gcc
3163         gcc_version=$($_cc --version | head -n1)
3164         gcc_basever=$($_cc -dumpversion)
3165         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3166         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3167         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3168         if ! $_cc -dumpversion | grep -q '^2\.'; then
3169             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3170         fi
3171         _cflags_speed='-O3'
3172         _cflags_size='-Os'
3173     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3174         _type=icc
3175         _ident=$($_cc --version | head -n1)
3176         _depflags='-MMD'
3177         _cflags_speed='-O3'
3178         _cflags_size='-Os'
3179         _cflags_noopt='-O1'
3180     elif $_cc -v 2>&1 | grep -q xlc; then
3181         _type=xlc
3182         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3183         _cflags_speed='-O5'
3184         _cflags_size='-O5 -qcompact'
3185     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3186         _type=ccc
3187         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3188         _DEPFLAGS='-M'
3189         _cflags_speed='-fast'
3190         _cflags_size='-O1'
3191         _flags_filter=ccc_flags
3192     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3193         test -d "$sysroot" || die "No valid sysroot specified."
3194         _type=armcc
3195         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3196         armcc_conf="$PWD/armcc.conf"
3197         $_cc --arm_linux_configure                 \
3198              --arm_linux_config_file="$armcc_conf" \
3199              --configure_sysroot="$sysroot"        \
3200              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3201              die "Error creating armcc configuration file."
3202         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3203         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3204         as_default="${cross_prefix}gcc"
3205         _depflags='-MMD'
3206         _cflags_speed='-O3'
3207         _cflags_size='-Os'
3208     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3209         _type=tms470
3210         _ident=$($_cc -version | head -n1 | tr -s ' ')
3211         _flags='--gcc --abi=eabi -me'
3212         _cc_e='-ppl -fe=$@'
3213         _cc_o='-fe=$@'
3214         _depflags='-ppa -ppd=$(@:.o=.d)'
3215         _cflags_speed='-O3 -mf=5'
3216         _cflags_size='-O3 -mf=2'
3217         _flags_filter=tms470_flags
3218     elif $_cc -v 2>&1 | grep -q clang; then
3219         _type=clang
3220         _ident=$($_cc --version 2>/dev/null | head -n1)
3221         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3222         _cflags_speed='-O3'
3223         _cflags_size='-Os'
3224     elif $_cc -V 2>&1 | grep -q Sun; then
3225         _type=suncc
3226         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3227         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3228         _DEPFLAGS='-xM1 -xc99'
3229         _ldflags='-std=c99'
3230         _cflags_speed='-O5'
3231         _cflags_size='-O5 -xspace'
3232         _flags_filter=suncc_flags
3233     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3234         _type=pathscale
3235         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3236         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3237         _cflags_speed='-O2'
3238         _cflags_size='-Os'
3239         _flags_filter='filter_out -Wdisabled-optimization'
3240     elif $_cc -v 2>&1 | grep -q Open64; then
3241         _type=open64
3242         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3243         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3244         _cflags_speed='-O2'
3245         _cflags_size='-Os'
3246         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3247     elif $_cc -V 2>&1 | grep -q Portland; then
3248         _type=pgi
3249         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3250         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3251         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3252         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3253         _cflags_noopt="-O1"
3254         _flags_filter=pgi_flags
3255     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3256         _type=armasm
3257         _ident=$($_cc | head -n1)
3258         # 4509: "This form of conditional instruction is deprecated"
3259         _flags="-nologo -ignore 4509"
3260         _flags_filter=armasm_flags
3261     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3262         _type=msvc
3263         _ident=$($_cc 2>&1 | head -n1)
3264         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3265         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3266         _cflags_speed="-O2"
3267         _cflags_size="-O1"
3268         if $_cc -nologo- 2>&1 | grep -q Linker; then
3269             _ld_o='-out:$@'
3270         else
3271             _ld_o='-Fe$@'
3272         fi
3273         _cc_o='-Fo$@'
3274         _cc_e='-P -Fi$@'
3275         _flags_filter=msvc_flags
3276         _ld_lib='lib%.a'
3277         _ld_path='-libpath:'
3278         _flags='-nologo'
3279     elif $_cc 2>&1 | grep -q Intel; then
3280         _type=icl
3281         _ident=$($_cc 2>&1 | head -n1)
3282         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3283         # Not only is O3 broken on 13.x+ but it is slower on all previous
3284         # versions (tested) as well.
3285         _cflags_speed="-O2"
3286         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3287         if $_cc 2>&1 | grep -q Linker; then
3288             _ld_o='-out:$@'
3289         else
3290             _ld_o='-Fe$@'
3291         fi
3292         _cc_o='-Fo$@'
3293         _cc_e='-P'
3294         _flags_filter=icl_flags
3295         _ld_lib='lib%.a'
3296         _ld_path='-libpath:'
3297         # -Qdiag-error to make icl error when seeing certain unknown arguments
3298         _flags='-nologo -Qdiag-error:4044,10157'
3299         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3300         # with MSVC which enables it by default.
3301         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3302     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3303         # lld can emulate multiple different linkers; in ms link.exe mode,
3304         # the -? parameter gives the help output which contains an identifyable
3305         # string, while it gives an error in other modes.
3306         _type=lld-link
3307         # The link.exe mode doesn't have a switch for getting the version,
3308         # but we can force it back to gnu mode and get the version from there.
3309         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3310         _ld_o='-out:$@'
3311         _flags_filter=msvc_flags
3312         _ld_lib='lib%.a'
3313         _ld_path='-libpath:'
3314     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3315         _type=cparser
3316         _ident=$($_cc --version | head -n1)
3317         _depflags='-MMD'
3318         _cflags_speed='-O4'
3319         _cflags_size='-O2'
3320         _flags_filter=cparser_flags
3321     fi
3322
3323     eval ${pfx}_type=\$_type
3324     eval ${pfx}_ident=\$_ident
3325 }
3326
3327 set_ccvars(){
3328     eval ${1}_C=\${_cc_c-\${${1}_C}}
3329     eval ${1}_E=\${_cc_e-\${${1}_E}}
3330     eval ${1}_O=\${_cc_o-\${${1}_O}}
3331
3332     if [ -n "$_depflags" ]; then
3333         eval ${1}_DEPFLAGS=\$_depflags
3334     else
3335         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3336         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3337         eval DEP${1}FLAGS=\$_flags
3338     fi
3339 }
3340
3341 probe_cc cc "$cc"
3342 cflags_filter=$_flags_filter
3343 cflags_speed=$_cflags_speed
3344 cflags_size=$_cflags_size
3345 cflags_noopt=$_cflags_noopt
3346 add_cflags $_flags $_cflags
3347 cc_ldflags=$_ldflags
3348 set_ccvars CC
3349
3350 probe_cc hostcc "$host_cc"
3351 host_cflags_filter=$_flags_filter
3352 add_host_cflags  $_flags $_cflags
3353 set_ccvars HOSTCC
3354
3355 test -n "$cc_type" && enable $cc_type ||
3356     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3357
3358 : ${as_default:=$cc}
3359 : ${objcc_default:=$cc}
3360 : ${dep_cc_default:=$cc}
3361 : ${ld_default:=$cc}
3362 : ${host_ld_default:=$host_cc}
3363 set_default ar as objcc dep_cc ld host_ld
3364
3365 probe_cc as "$as"
3366 asflags_filter=$_flags_filter
3367 add_asflags $_flags $_cflags
3368 set_ccvars AS
3369
3370 probe_cc objcc "$objcc"
3371 objcflags_filter=$_flags_filter
3372 add_objcflags $_flags $_cflags
3373 set_ccvars OBJC
3374
3375 probe_cc ld "$ld"
3376 ldflags_filter=$_flags_filter
3377 add_ldflags $_flags $_ldflags
3378 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3379 LD_O=${_ld_o-$LD_O}
3380 LD_LIB=${_ld_lib-$LD_LIB}
3381 LD_PATH=${_ld_path-$LD_PATH}
3382
3383 probe_cc hostld "$host_ld"
3384 host_ldflags_filter=$_flags_filter
3385 add_host_ldflags $_flags $_ldflags
3386 HOSTLD_O=${_ld_o-$HOSTLD_O}
3387
3388 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3389     probe_cc depcc "$dep_cc"
3390     CCDEP=${_DEPCMD:-$DEPCMD}
3391     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3392     DEPCCFLAGS=$_flags
3393 fi
3394
3395 if $ar 2>&1 | grep -q Microsoft; then
3396     arflags="-nologo"
3397     ar_o='-out:$@'
3398 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3399     arflags="rq"
3400     ar_o='$@'
3401 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3402     arflags='-Xany -r -c'
3403     ar_o='$@'
3404 else
3405     arflags="rc"
3406     ar_o='$@'
3407 fi
3408
3409 add_cflags $extra_cflags
3410 add_objcflags $extra_objcflags
3411 add_asflags $extra_cflags
3412
3413 if test -n "$sysroot"; then
3414     case "$cc_type" in
3415         gcc|llvm_gcc|clang)
3416             add_cppflags --sysroot="$sysroot"
3417             add_ldflags --sysroot="$sysroot"
3418         ;;
3419         tms470)
3420             add_cppflags -I"$sysinclude"
3421             add_ldflags  --sysroot="$sysroot"
3422         ;;
3423     esac
3424 fi
3425
3426 if test "$cpu" = host; then
3427     enabled cross_compile &&
3428         die "--cpu=host makes no sense when cross-compiling."
3429
3430     case "$cc_type" in
3431         gcc|llvm_gcc)
3432             check_native(){
3433                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3434                 sed -n "/cc1.*$1=/{
3435                             s/.*$1=\\([^ ]*\\).*/\\1/
3436                             p
3437                             q
3438                         }" $TMPE
3439             }
3440             cpu=$(check_native -march || check_native -mcpu)
3441         ;;
3442     esac
3443
3444     test "${cpu:-host}" = host &&
3445         die "--cpu=host not supported with compiler $cc"
3446 fi
3447
3448 # Deal with common $arch aliases
3449 case "$arch" in
3450     aarch64|arm64)
3451         arch="aarch64"
3452     ;;
3453     arm*)
3454         arch="arm"
3455     ;;
3456     mips*|IP*)
3457         case "$arch" in
3458         *el)
3459             add_cppflags -EL
3460             add_ldflags -EL
3461         ;;
3462         *eb)
3463             add_cppflags -EB
3464             add_ldflags -EB
3465         ;;
3466         esac
3467         arch="mips"
3468     ;;
3469     parisc*|hppa*)
3470         arch="parisc"
3471     ;;
3472     "Power Macintosh"|ppc*|powerpc*)
3473         arch="ppc"
3474     ;;
3475     s390|s390x)
3476         arch="s390"
3477     ;;
3478     sh4|sh)
3479         arch="sh4"
3480     ;;
3481     sun4u|sparc*)
3482         arch="sparc"
3483     ;;
3484     tilegx|tile-gx)
3485         arch="tilegx"
3486     ;;
3487     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3488         arch="x86"
3489     ;;
3490 esac
3491
3492 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3493 enable $arch
3494
3495 # Add processor-specific flags
3496 if enabled aarch64; then
3497
3498     case $cpu in
3499         armv*)
3500             cpuflags="-march=$cpu"
3501         ;;
3502         *)
3503             cpuflags="-mcpu=$cpu"
3504         ;;
3505     esac
3506
3507 elif enabled alpha; then
3508
3509     cpuflags="-mcpu=$cpu"
3510
3511 elif enabled arm; then
3512
3513     check_arm_arch() {
3514         check_cpp_condition stddef.h \
3515             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3516             $cpuflags
3517     }
3518
3519     probe_arm_arch() {
3520         if   check_arm_arch 4;        then echo armv4
3521         elif check_arm_arch 4T;       then echo armv4t
3522         elif check_arm_arch 5;        then echo armv5
3523         elif check_arm_arch 5E;       then echo armv5e
3524         elif check_arm_arch 5T;       then echo armv5t
3525         elif check_arm_arch 5TE;      then echo armv5te
3526         elif check_arm_arch 5TEJ;     then echo armv5te
3527         elif check_arm_arch 6;        then echo armv6
3528         elif check_arm_arch 6J;       then echo armv6j
3529         elif check_arm_arch 6K;       then echo armv6k
3530         elif check_arm_arch 6Z;       then echo armv6z
3531         elif check_arm_arch 6ZK;      then echo armv6zk
3532         elif check_arm_arch 6T2;      then echo armv6t2
3533         elif check_arm_arch 7;        then echo armv7
3534         elif check_arm_arch 7A  7_A;  then echo armv7-a
3535         elif check_arm_arch 7S;       then echo armv7-a
3536         elif check_arm_arch 7R  7_R;  then echo armv7-r
3537         elif check_arm_arch 7M  7_M;  then echo armv7-m
3538         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3539         elif check_arm_arch 8A  8_A;  then echo armv8-a
3540         fi
3541     }
3542
3543     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3544
3545     case $cpu in
3546         armv*)
3547             cpuflags="-march=$cpu"
3548             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3549         ;;
3550         *)
3551             cpuflags="-mcpu=$cpu"
3552             case $cpu in
3553                 cortex-a*)                               subarch=armv7a  ;;
3554                 cortex-r*)                               subarch=armv7r  ;;
3555                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3556                 arm11*)                                  subarch=armv6   ;;
3557                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3558                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3559                 *)                             subarch=$(probe_arm_arch) ;;
3560             esac
3561         ;;
3562     esac
3563
3564     case "$subarch" in
3565         armv5t*)    enable fast_clz                ;;
3566         armv[6-8]*) enable fast_clz fast_unaligned ;;
3567     esac
3568
3569 elif enabled avr32; then
3570
3571     case $cpu in
3572         ap7[02]0[0-2])
3573             subarch="avr32_ap"
3574             cpuflags="-mpart=$cpu"
3575         ;;
3576         ap)
3577             subarch="avr32_ap"
3578             cpuflags="-march=$cpu"
3579         ;;
3580         uc3[ab]*)
3581             subarch="avr32_uc"
3582             cpuflags="-mcpu=$cpu"
3583         ;;
3584         uc)
3585             subarch="avr32_uc"
3586             cpuflags="-march=$cpu"
3587         ;;
3588     esac
3589
3590 elif enabled bfin; then
3591
3592     cpuflags="-mcpu=$cpu"
3593
3594 elif enabled mips; then
3595
3596     cpuflags="-march=$cpu"
3597
3598 elif enabled ppc; then
3599
3600     disable ldbrx
3601
3602     case $(tolower $cpu) in
3603         601|ppc601|powerpc601)
3604             cpuflags="-mcpu=601"
3605             disable altivec
3606         ;;
3607         603*|ppc603*|powerpc603*)
3608             cpuflags="-mcpu=603"
3609             disable altivec
3610         ;;
3611         604*|ppc604*|powerpc604*)
3612             cpuflags="-mcpu=604"
3613             disable altivec
3614         ;;
3615         g3|75*|ppc75*|powerpc75*)
3616             cpuflags="-mcpu=750"
3617             disable altivec
3618         ;;
3619         g4|745*|ppc745*|powerpc745*)
3620             cpuflags="-mcpu=7450"
3621             disable vsx
3622         ;;
3623         74*|ppc74*|powerpc74*)
3624             cpuflags="-mcpu=7400"
3625             disable vsx
3626         ;;
3627         g5|970|ppc970|powerpc970)
3628             cpuflags="-mcpu=970"
3629             disable vsx
3630         ;;
3631         power[3-6]*)
3632             cpuflags="-mcpu=$cpu"
3633             disable vsx
3634         ;;
3635         power[7-8]*)
3636             cpuflags="-mcpu=$cpu"
3637             enable ldbrx
3638         ;;
3639         cell)
3640             cpuflags="-mcpu=cell"
3641             enable ldbrx
3642             disable vsx
3643         ;;
3644         e500mc)
3645             cpuflags="-mcpu=e500mc"
3646             disable altivec
3647         ;;
3648         e500v2)
3649             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3650             disable altivec
3651             disable dcbzl
3652         ;;
3653         e500)
3654             cpuflags="-mcpu=8540 -mhard-float"
3655             disable altivec
3656             disable dcbzl
3657         ;;
3658     esac
3659
3660 elif enabled sparc; then
3661
3662     case $cpu in
3663         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3664             cpuflags="-mcpu=$cpu"
3665         ;;
3666         ultrasparc*|niagara[234])
3667             cpuflags="-mcpu=$cpu"
3668         ;;
3669     esac
3670
3671 elif enabled x86; then
3672
3673     case $cpu in
3674         i[345]86|pentium)
3675             cpuflags="-march=$cpu"
3676             disable i686
3677             disable mmx
3678         ;;
3679         # targets that do NOT support nopl and conditional mov (cmov)
3680         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3681             cpuflags="-march=$cpu"
3682             disable i686
3683         ;;
3684         # targets that do support nopl and conditional mov (cmov)
3685         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3686             cpuflags="-march=$cpu"
3687             enable i686
3688             enable fast_cmov
3689         ;;
3690         # targets that do support conditional mov but on which it's slow
3691         pentium4|pentium4m|prescott|nocona)
3692             cpuflags="-march=$cpu"
3693             enable i686
3694             disable fast_cmov
3695         ;;
3696     esac
3697
3698 fi
3699
3700 if [ "$cpu" != generic ]; then
3701     add_cflags  $cpuflags
3702     add_asflags $cpuflags
3703     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3704 fi
3705
3706 # compiler sanity check
3707 check_exec <<EOF
3708 int main(void){ return 0; }
3709 EOF
3710 if test "$?" != 0; then
3711     echo "$cc is unable to create an executable file."
3712     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3713         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3714         echo "Only do this if you know what cross compiling means."
3715     fi
3716     die "C compiler test failed."
3717 fi
3718
3719 add_cppflags -D_ISOC99_SOURCE
3720
3721 # some compilers silently accept -std=c11, so we also need to check that the
3722 # version macro is defined properly
3723 if test_cflags_cpp -std=c11 "__STDC_VERSION__ >= 201112L"; then
3724     add_cflags -std=c11
3725 else
3726     check_cflags -std=c99
3727 fi
3728
3729 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3730 #include <stdlib.h>
3731 EOF
3732 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3733 #include <stdlib.h>
3734 EOF
3735
3736 add_host_cppflags -D_ISOC99_SOURCE
3737 check_host_cflags -std=c99
3738 check_host_cflags -Wall
3739 check_host_cflags -O3
3740
3741 check_64bit(){
3742     arch32=$1
3743     arch64=$2
3744     expr=$3
3745     check_code cc "" "int test[2*($expr) - 1]" &&
3746         subarch=$arch64 || subarch=$arch32
3747 }
3748
3749 case "$arch" in
3750     aarch64|alpha|ia64)
3751         spic=$shared
3752     ;;
3753     mips)
3754         check_64bit mips mips64 '_MIPS_SIM > 1'
3755         spic=$shared
3756     ;;
3757     parisc)
3758         check_64bit parisc parisc64 'sizeof(void *) > 4'
3759         spic=$shared
3760     ;;
3761     ppc)
3762         check_64bit ppc ppc64 'sizeof(void *) > 4'
3763         spic=$shared
3764     ;;
3765     s390)
3766         check_64bit s390 s390x 'sizeof(void *) > 4'
3767         spic=$shared
3768     ;;
3769     sparc)
3770         check_64bit sparc sparc64 'sizeof(void *) > 4'
3771         spic=$shared
3772     ;;
3773     x86)
3774         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3775         if test "$subarch" = "x86_64"; then
3776             spic=$shared
3777         fi
3778     ;;
3779 esac
3780
3781 enable $subarch
3782 enabled spic && enable_weak pic
3783
3784 # OS specific
3785 case $target_os in
3786     aix)
3787         SHFLAGS=-shared
3788         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3789         enabled shared && add_ldflags -Wl,-brtl
3790         ;;
3791     android)
3792         disable symver
3793         enable section_data_rel_ro
3794         SLIB_INSTALL_NAME='$(SLIBNAME)'
3795         SLIB_INSTALL_LINKS=
3796         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3797         ;;
3798     haiku)
3799         prefix_default="/boot/common"
3800         network_extralibs="-lnetwork"
3801         host_libs=
3802         ;;
3803     sunos)
3804         SHFLAGS='-shared -Wl,-h,$$(@F)'
3805         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3806         network_extralibs="-lsocket -lnsl"
3807         # When using suncc to build, the Solaris linker will mark
3808         # an executable with each instruction set encountered by
3809         # the Solaris assembler.  As our libraries contain their own
3810         # guards for processor-specific code, instead suppress
3811         # generation of the HWCAPS ELF section on Solaris x86 only.
3812         enabled_all suncc x86 &&
3813             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3814             add_ldflags -Wl,-M,mapfile
3815         nm_default='nm -P -g'
3816         version_script='-M'
3817         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3818         ;;
3819     netbsd)
3820         disable symver
3821         oss_indev_extralibs="-lossaudio"
3822         oss_outdev_extralibs="-lossaudio"
3823         ;;
3824     openbsd|bitrig)
3825         disable symver
3826         SHFLAGS='-shared'
3827         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3828         SLIB_INSTALL_LINKS=
3829         oss_indev_extralibs="-lossaudio"
3830         oss_outdev_extralibs="-lossaudio"
3831         ;;
3832     dragonfly)
3833         disable symver
3834         ;;
3835     freebsd)
3836         ;;
3837     bsd/os)
3838         add_extralibs -lpoll -lgnugetopt
3839         ;;
3840     darwin)
3841         enabled ppc && add_asflags -force_cpusubtype_ALL
3842         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3843         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3844         add_ldflags -Wl,-dynamic,-search_paths_first
3845         SLIBSUF=".dylib"
3846         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3847         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3848         objformat="macho"
3849         enabled x86_64 && objformat="macho64"
3850         enabled_any pic shared ||
3851             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3852         check_header dispatch/dispatch.h &&
3853             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3854         ;;
3855     msys*)
3856         die "Native MSYS builds are discouraged, please use the MINGW environment."
3857         ;;
3858     mingw32*|mingw64*)
3859         if test $target_os = "mingw32ce"; then
3860             disable network
3861         else
3862             target_os=mingw32
3863         fi
3864         LIBTARGET=i386
3865         if enabled x86_64; then
3866             LIBTARGET="i386:x86-64"
3867         elif enabled arm; then
3868             LIBTARGET=arm-wince
3869         fi
3870         check_ldflags -Wl,--nxcompat
3871         check_ldflags -Wl,--dynamicbase
3872         shlibdir_default="$bindir_default"
3873         SLIBPREF=""
3874         SLIBSUF=".dll"
3875         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3876         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3877         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3878         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3879         SLIB_INSTALL_LINKS=
3880         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3881         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3882         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3883         objformat="win32"
3884         dlltool="${cross_prefix}dlltool"
3885         ranlib=:
3886         enable dos_paths
3887         ;;
3888     win32|win64)
3889         disable symver
3890         if enabled shared; then
3891             # Link to the import library instead of the normal static library
3892             # for shared libs.
3893             LD_LIB='%.lib'
3894             # Cannot build both shared and static libs with MSVC or icl.
3895             disable static
3896         fi
3897         shlibdir_default="$bindir_default"
3898         SLIBPREF=""
3899         SLIBSUF=".dll"
3900         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3901         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3902         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3903         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3904         SLIB_INSTALL_LINKS=
3905         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3906         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3907         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3908         objformat="win32"
3909         ranlib=:
3910         enable dos_paths
3911         ;;
3912     cygwin*)
3913         target_os=cygwin
3914         shlibdir_default="$bindir_default"
3915         SLIBPREF="cyg"
3916         SLIBSUF=".dll"
3917         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3918         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3919         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3920         SLIB_INSTALL_LINKS=
3921         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
3922         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
3923         objformat="win32"
3924         enable dos_paths
3925         ;;
3926     *-dos|freedos|opendos)
3927         network_extralibs="-lsocket"
3928         objformat="coff"
3929         enable dos_paths
3930         add_cppflags -U__STRICT_ANSI__
3931         ;;
3932     linux)
3933         enable dv1394
3934         enable section_data_rel_ro
3935         ;;
3936     irix*)
3937         target_os=irix
3938         ranlib="echo ignoring ranlib"
3939         ;;
3940     os/2*)
3941         ln_s="cp -f"
3942         objformat="aout"
3943         add_cppflags -D_GNU_SOURCE
3944         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3945         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3946         LIBSUF="_s.a"
3947         SLIBPREF=""
3948         SLIBSUF=".dll"
3949         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3950         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3951         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3952             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3953             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3954             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3955             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3956         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3957             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3958         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3959         enable dos_paths
3960         ;;
3961     gnu/kfreebsd)
3962         add_cppflags -D_BSD_SOURCE
3963         ;;
3964     gnu)
3965         ;;
3966     qnx)
3967         add_cppflags -D_QNX_SOURCE
3968         network_extralibs="-lsocket"
3969         ;;
3970     symbian)
3971         SLIBSUF=".dll"
3972         enable dos_paths
3973         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3974         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3975         add_ldflags -Wl,--target1-abs,--no-undefined \
3976                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3977                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3978         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3979                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3980                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3981         ;;
3982     osf1)
3983         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3984         ;;
3985     minix)
3986         ;;
3987     none)
3988         ;;
3989     *)
3990         die "Unknown OS '$target_os'."
3991         ;;
3992 esac
3993
3994 # determine libc flavour
3995
3996 probe_libc(){
3997     pfx=$1
3998     pfx_no_=${pfx%_}
3999     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4000     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4001         eval ${pfx}libc_type=uclibc
4002         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4003     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4004         eval ${pfx}libc_type=glibc
4005         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4006     # MinGW headers can be installed on Cygwin, so check for newlib first.
4007     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4008         eval ${pfx}libc_type=newlib
4009         add_${pfx}cppflags -U__STRICT_ANSI__
4010     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4011     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4012         eval ${pfx}libc_type=mingw64
4013         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4014         eval test \$${pfx_no_}cc_type = "gcc" &&
4015             add_${pfx}cppflags -D__printf__=__gnu_printf__
4016     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4017          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4018         eval ${pfx}libc_type=mingw32
4019         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4020             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4021             die "ERROR: MinGW32 runtime version must be >= 3.15."
4022         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4023         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
4024             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4025         eval test \$${pfx_no_}cc_type = "gcc" &&
4026             add_${pfx}cppflags -D__printf__=__gnu_printf__
4027     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4028         eval ${pfx}libc_type=msvcrt
4029         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4030             if [ "$pfx" = host_ ]; then
4031                 add_host_cppflags -Dsnprintf=_snprintf
4032             else
4033                 add_compat strtod.o strtod=avpriv_strtod
4034                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4035                                              _snprintf=avpriv_snprintf  \
4036                                              vsnprintf=avpriv_vsnprintf
4037             fi
4038         fi
4039         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4040         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4041         # 0x601 by default unless something else is set by the user.
4042         # This can easily lead to us detecting functions only present
4043         # in such new versions and producing binaries requiring windows 7.0.
4044         # Therefore explicitly set the default to XP unless the user has
4045         # set something else on the command line.
4046         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4047         # family. For these cases, configure is free to use any functions
4048         # found in the SDK headers by default. (Alternatively, we could force
4049         # _WIN32_WINNT to 0x0602 in that case.)
4050         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4051             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4052 #ifdef WINAPI_FAMILY
4053 #include <winapifamily.h>
4054 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4055 #error not desktop
4056 #endif
4057 #endif
4058 EOF
4059         if [ "$pfx" = "" ]; then
4060             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4061         fi
4062     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4063         eval ${pfx}libc_type=klibc
4064     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4065         eval ${pfx}libc_type=bionic
4066     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4067         eval ${pfx}libc_type=solaris
4068         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4069     else
4070         eval ${pfx}libc_type=default
4071         add_${pfx}cppflags -D_DEFAULT_SOURCE
4072     fi
4073 }
4074
4075 probe_libc
4076 test -n "$libc_type" && enable libc_$libc_type
4077 probe_libc host_
4078 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4079
4080 case $libc_type in
4081     bionic)
4082         add_compat strtod.o strtod=avpriv_strtod
4083         ;;
4084 esac
4085
4086 # hacks for compiler/libc/os combinations
4087
4088 if enabled_all tms470 libc_glibc; then
4089     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4090     add_cppflags -D__USER_LABEL_PREFIX__=
4091     add_cppflags -D__builtin_memset=memset
4092     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4093     add_cflags   -pds=48    # incompatible redefinition of macro
4094 fi
4095
4096 if enabled_all ccc libc_glibc; then
4097     add_ldflags -Wl,-z,now  # calls to libots crash without this
4098 fi
4099
4100 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4101     add_cppflags '-I\$(SRC_PATH)/compat/float'
4102
4103 esc(){
4104     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4105 }
4106
4107 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
4108
4109 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4110
4111 set_default $PATHS_LIST
4112 set_default nm
4113
4114 # we need to build at least one lib type
4115 if ! enabled_any static shared; then
4116     cat <<EOF
4117 At least one library type must be built.
4118 Specify --enable-static to build the static libraries or --enable-shared to
4119 build the shared libraries as well. To only build the shared libraries specify
4120 --disable-static in addition to --enable-shared.
4121 EOF
4122     exit 1
4123 fi
4124
4125 disabled optimizations || check_cflags -fomit-frame-pointer
4126
4127 enable_weak_pic() {
4128     disabled pic && return
4129     enable pic
4130     add_cppflags -DPIC
4131     case "$target_os" in
4132     mingw*|cygwin*)
4133         ;;
4134     *)
4135         add_cflags -fPIC
4136         ;;
4137     esac
4138     add_asflags  -fPIC
4139 }
4140
4141 enabled pic && enable_weak_pic
4142
4143 check_cc <<EOF || die "Symbol mangling check failed."
4144 int ff_extern;
4145 EOF
4146 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4147 extern_prefix=${sym%%ff_extern*}
4148
4149 check_cc <<EOF && enable_weak inline_asm
4150 void foo(void) { __asm__ volatile ("" ::); }
4151 EOF
4152
4153 _restrict=
4154 for restrict_keyword in restrict __restrict__ __restrict; do
4155     check_cc <<EOF && _restrict=$restrict_keyword && break
4156 void foo(char * $restrict_keyword p);
4157 EOF
4158 done
4159
4160 check_cc <<EOF && enable pragma_deprecated
4161 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4162 EOF
4163
4164 check_cc <<EOF && enable attribute_packed
4165 struct { int x; } __attribute__((packed)) x;
4166 EOF
4167
4168 check_cc <<EOF && enable attribute_may_alias
4169 union { int x; } __attribute__((may_alias)) x;
4170 EOF
4171
4172 check_cc <<EOF || die "endian test failed"
4173 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4174 EOF
4175 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4176
4177 check_gas() {
4178     log "check_gas using '$as' as AS"
4179     # :vararg is used on aarch64, arm and ppc altivec
4180     check_as <<EOF || return 1
4181 .macro m n, y:vararg=0
4182 \n: .int \y
4183 .endm
4184 m x
4185 EOF
4186     # .altmacro is only used in arm asm
4187     ! enabled arm || check_as <<EOF || return 1
4188 .altmacro
4189 EOF
4190     enable gnu_as
4191     return 0
4192 }
4193
4194 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4195     nogas=:
4196     enabled_any arm aarch64 && nogas=die
4197     enabled_all ppc altivec && nogas=warn
4198     as_noop=-v
4199
4200     case $as_type in
4201         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4202         gcc)  gaspp_as_type=gas ;;
4203         *)    gaspp_as_type=$as_type ;;
4204     esac
4205
4206     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4207
4208     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4209         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4210
4211     if ! check_gas ; then
4212         as=${gas:=$as}
4213         check_gas || \
4214             $nogas "GNU assembler not found, install/update gas-preprocessor"
4215     fi
4216
4217     check_as <<EOF && enable as_func
4218 .func test
4219 .endfunc
4220 EOF
4221 fi
4222
4223 check_inline_asm inline_asm_labels '"1:\n"'
4224
4225 if enabled aarch64; then
4226     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4227     # internal assembler in clang 3.3 does not support this instruction
4228     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4229     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4230
4231     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4232
4233 elif enabled alpha; then
4234
4235     check_cflags -mieee
4236
4237 elif enabled arm; then
4238
4239     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4240     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4241     enabled thumb && check_cflags -mthumb || check_cflags -marm
4242
4243     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4244         enable vfp_args
4245     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4246         enable vfp_args
4247     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4248         case "${cross_prefix:-$cc}" in
4249             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4250             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4251 __asm__ (".eabi_attribute 28, 1");
4252 int main(void) { return 0; }
4253 EOF
4254         esac
4255         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4256     fi
4257
4258     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4259     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4260     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4261     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4262     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4263     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4264
4265     [ $target_os = linux ] || [ $target_os = android ] ||
4266         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4267             $ARCH_EXT_LIST_ARM
4268
4269     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4270
4271     check_as <<EOF && enable as_dn_directive
4272 ra .dn d0.i16
4273 .unreq ra
4274 EOF
4275     check_as <<EOF && enable as_fpu_directive
4276 .fpu neon
4277 EOF
4278
4279     # llvm's integrated assembler supports .object_arch from llvm 3.5
4280     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4281 .object_arch armv4
4282 EOF
4283
4284     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4285
4286 elif enabled mips; then
4287
4288     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4289
4290     # make sure that only an instruction set is enabled
4291     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4292
4293     if enabled mips64; then
4294         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4295             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4296                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4297     else
4298         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4299             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4300                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4301     fi
4302
4303 elif enabled parisc; then
4304
4305     if enabled gcc; then
4306         case $($cc -dumpversion) in
4307             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4308         esac
4309     fi
4310
4311 elif enabled ppc; then
4312
4313     enable local_aligned_8 local_aligned_16 local_aligned_32
4314
4315     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4316     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4317     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4318     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4319
4320     # AltiVec flags: The FSF version of GCC differs from the Apple version
4321     if enabled altivec; then
4322         check_cflags -maltivec -mabi=altivec &&
4323         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4324         check_cflags -faltivec
4325
4326         # check if our compiler supports Motorola AltiVec C API
4327         check_cc <<EOF || disable altivec
4328 $inc_altivec_h
4329 int main(void) {
4330     vector signed int v1 = (vector signed int) { 0 };
4331     vector signed int v2 = (vector signed int) { 1 };
4332     v1 = vec_add(v1, v2);
4333     return 0;
4334 }
4335 EOF
4336
4337         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4338     fi
4339
4340     if enabled vsx; then
4341         check_cflags -mvsx &&
4342         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4343     fi
4344
4345     if enabled power8; then
4346         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4347     fi
4348
4349 elif enabled x86; then
4350
4351     check_builtin rdtsc    intrin.h   "__rdtsc()"
4352     check_builtin mm_empty mmintrin.h "_mm_empty()"
4353
4354     enable local_aligned_8 local_aligned_16 local_aligned_32
4355
4356     # check whether EBP is available on x86
4357     # As 'i' is stored on the stack, this program will crash
4358     # if the base pointer is used to access it because the
4359     # base pointer is cleared in the inline assembly code.
4360     check_exec_crash <<EOF && enable ebp_available
4361 volatile int i=0;
4362 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4363 return i;
4364 EOF
4365
4366     # check whether EBX is available on x86
4367     check_inline_asm ebx_available '""::"b"(0)' &&
4368         check_inline_asm ebx_available '"":::"%ebx"'
4369
4370     # check whether xmm clobbers are supported
4371     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4372
4373     # check whether binutils is new enough to compile SSSE3/MMXEXT
4374     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4375     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4376
4377     if ! disabled_any asm mmx yasm; then
4378         if check_cmd $yasmexe --version; then
4379             enabled x86_64 && yasm_extra="-m amd64"
4380             yasm_debug="-g dwarf2"
4381         elif check_cmd nasm -v; then
4382             yasmexe=nasm
4383             yasm_debug="-g -F dwarf"
4384             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4385         fi
4386
4387         YASMFLAGS="-f $objformat $yasm_extra"
4388         enabled pic               && append YASMFLAGS "-DPIC"
4389         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4390         case "$objformat" in
4391             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4392         esac
4393
4394         check_yasm "movbe ecx, [5]" && enable yasm ||
4395             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4396         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4397         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4398         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4399         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4400         check_yasm "CPU amdnop" || disable cpunop
4401     fi
4402
4403     case "$cpu" in
4404         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4405             disable fast_clz
4406         ;;
4407     esac
4408
4409 fi
4410
4411 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4412
4413 check_ldflags -Wl,--as-needed
4414
4415 if check_func dlopen; then
4416     ldl=
4417 elif check_func dlopen -ldl; then
4418     ldl=-ldl
4419 fi
4420
4421 if ! disabled network; then
4422     check_func getaddrinfo $network_extralibs
4423     check_func inet_aton $network_extralibs
4424
4425     check_type netdb.h "struct addrinfo"
4426     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4427     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4428     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4429     check_type poll.h "struct pollfd"
4430     check_type netinet/sctp.h "struct sctp_event_subscribe"
4431     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4432     check_type netinet/in.h "struct sockaddr_in6"
4433     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4434     check_type "sys/types.h sys/socket.h" socklen_t
4435
4436     # Prefer arpa/inet.h over winsock2
4437     if check_header arpa/inet.h ; then
4438         check_func closesocket
4439     elif check_header winsock2.h ; then
4440         check_func_headers winsock2.h closesocket -lws2 &&
4441             network_extralibs="-lws2" ||
4442         { check_func_headers winsock2.h closesocket -lws2_32 &&
4443             network_extralibs="-lws2_32"; } || disable winsock2_h network
4444         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4445
4446         check_type ws2tcpip.h socklen_t
4447         check_type ws2tcpip.h "struct addrinfo"
4448         check_type ws2tcpip.h "struct group_source_req"
4449         check_type ws2tcpip.h "struct ip_mreq_source"
4450         check_type ws2tcpip.h "struct ipv6_mreq"
4451         check_type winsock2.h "struct pollfd"
4452         check_struct winsock2.h "struct sockaddr" sa_len
4453         check_type ws2tcpip.h "struct sockaddr_in6"
4454         check_type ws2tcpip.h "struct sockaddr_storage"
4455     else
4456         disable network
4457     fi
4458 fi
4459
4460 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4461 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4462 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4463 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4464
4465 case "$custom_allocator" in
4466     jemalloc)
4467         # jemalloc by default does not use a prefix
4468         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4469     ;;
4470     tcmalloc)
4471         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
4472         malloc_prefix=tc_
4473     ;;
4474 esac
4475
4476 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4477 check_func  ${malloc_prefix}memalign            && enable memalign
4478 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4479
4480 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4481     check_func_headers time.h clock_gettime ||
4482         { check_lib time.h clock_gettime -lrt && LIBRT="-lrt"; }
4483
4484 check_func  fcntl
4485 check_func  fork
4486 check_func  gethrtime
4487 check_func  getopt
4488 check_func  getrusage
4489 check_func  gettimeofday
4490 check_func  gmtime_r
4491 check_func  isatty
4492 check_func  localtime_r
4493 check_func  mach_absolute_time
4494 check_func  mkstemp
4495 check_func  mmap
4496 check_func  mprotect
4497 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4498 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4499 check_func  sched_getaffinity
4500 check_func  setrlimit
4501 check_func  strerror_r
4502 check_func  sysconf
4503 check_func  sysctl
4504 check_func  usleep
4505
4506 check_func_headers io.h setmode
4507 check_func_headers stdlib.h getenv
4508
4509 check_func_headers windows.h CoTaskMemFree -lole32
4510 check_func_headers windows.h GetProcessAffinityMask
4511 check_func_headers windows.h GetProcessTimes
4512 check_func_headers windows.h GetSystemTimeAsFileTime
4513 check_func_headers windows.h LoadLibrary
4514 check_func_headers windows.h MapViewOfFile
4515 check_func_headers windows.h SetConsoleTextAttribute
4516 check_func_headers windows.h Sleep
4517 check_func_headers windows.h VirtualAlloc
4518 check_struct windows.h "CONDITION_VARIABLE" Ptr
4519
4520 check_header direct.h
4521 check_header dlfcn.h
4522 check_header d3d11.h
4523 check_header dxva.h
4524 check_header dxva2api.h
4525 check_header io.h
4526 check_header mach/mach_time.h
4527 check_header malloc.h
4528 check_header poll.h
4529 check_header sys/mman.h
4530 check_header sys/param.h
4531 check_header sys/resource.h
4532 check_header sys/select.h
4533 check_header sys/time.h
4534 check_header sys/un.h
4535 check_header unistd.h
4536 check_header valgrind/valgrind.h
4537 check_header vdpau/vdpau.h
4538 check_header vdpau/vdpau_x11.h
4539 check_header VideoDecodeAcceleration/VDADecoder.h
4540 check_header windows.h
4541 check_header X11/extensions/XvMClib.h
4542
4543 # it seems there are versions of clang in some distros that try to use the
4544 # gcc headers, which explodes for stdatomic
4545 # so we also check that atomics actually work here
4546 check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4547
4548 check_lib "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4549 check_lib "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4550 check_lib "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4551
4552 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4553
4554 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4555 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4556 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4557
4558 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4559 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4560 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4561 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4562 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4563
4564 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4565
4566 if ! disabled w32threads && ! enabled pthreads; then
4567     check_func_headers "windows.h process.h" _beginthreadex &&
4568         enable w32threads || disable w32threads
4569 fi
4570
4571 # check for some common methods of building with pthread support
4572 # do this before the optional library checks as some of them require pthreads
4573 if ! disabled pthreads && ! enabled w32threads; then
4574     enable pthreads
4575     if check_func pthread_join -pthread; then
4576         add_cflags -pthread
4577         add_extralibs -pthread
4578     elif check_func pthread_join -pthreads; then
4579         add_cflags -pthreads
4580         add_extralibs -pthreads
4581     elif check_func pthread_join -lpthreadGC2; then
4582         add_extralibs -lpthreadGC2
4583     elif check_lib pthread.h pthread_join -lpthread; then
4584         :
4585     elif ! check_func pthread_join; then
4586         disable pthreads
4587     fi
4588 fi
4589
4590 enabled pthreads &&
4591     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
4592
4593 disabled  zlib || check_lib  zlib.h      zlibVersion -lz   || disable  zlib
4594 disabled bzlib || check_lib bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4595
4596 check_lib math.h sin -lm && LIBM="-lm"
4597
4598 atan2f_args=2
4599 ldexpf_args=2
4600 powf_args=2
4601
4602 for func in $MATH_FUNCS; do
4603     eval check_mathfunc $func \${${func}_args:-1} $LIBM
4604 done
4605
4606 # these are off by default, so fail if requested and not available
4607 enabled avisynth          && { check_lib "avisynth/avisynth_c.h windows.h" LoadLibrary ||
4608                                check_lib "avxsynth/avxsynth_c.h dlfcn.h" dlopen -ldl   ||
4609                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4610 enabled cuda              && check_lib cuda.h cuInit -lcuda
4611 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4612 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4613 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4614 enabled libdc1394         && require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new
4615 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4616 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4617 enabled libfdk_aac        && require_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4618 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4619 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4620 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4621                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4622                                done || die "ERROR: libgsm not found"; }
4623 enabled libhdcd           && require_pkg_config libhdcd "hdcd/hdcd_simple.h" hdcd_new
4624 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4625 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4626 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
4627 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4628 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4629 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4630 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4631 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4632 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
4633 enabled libopenjpeg       && { check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4634                                require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4635 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4636 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4637 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4638 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4639 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
4640 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4641 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4642 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4643 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4644 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4645 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4646 enabled libvpx            && require_pkg_config "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version && {
4647     enabled libvpx_vp8_decoder && {
4648         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
4649             disable libvpx_vp8_decoder;
4650     }
4651     enabled libvpx_vp8_encoder && {
4652         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
4653             disable libvpx_vp8_encoder;
4654     }
4655     enabled libvpx_vp9_decoder && {
4656         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
4657             disable libvpx_vp9_decoder;
4658     }
4659     enabled libvpx_vp9_encoder && {
4660         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
4661             disable libvpx_vp9_encoder;
4662     }
4663     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
4664         die "libvpx enabled but no supported decoders found"
4665     fi
4666 }
4667 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4668 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4669 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4670                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4671                                die "ERROR: libx264 version must be >= 0.118."; } &&
4672                              { check_cpp_condition x264.h "X264_MPEG2" &&
4673                                enable libx262; }
4674 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
4675                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
4676                                die "ERROR: libx265 version must be >= 57."; }
4677 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4678 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4679 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4680                                 { ! enabled cross_compile && {
4681                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
4682                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
4683                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
4684                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
4685                                die "ERROR: mmal not found"; }
4686 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
4687 enabled omx_rpi && enable omx
4688 enabled omx               && { check_header OMX_Core.h ||
4689                                 { ! enabled cross_compile && enabled omx_rpi && {
4690                                     add_cflags -isystem/opt/vc/include/IL ; }
4691                                 check_header OMX_Core.h ; } ||
4692                                die "ERROR: OpenMAX IL headers not found"; }
4693 enabled openssl           && { { check_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
4694                                  check_pkg_config openssl openssl/ssl.h SSL_library_init; } && {
4695                                add_cflags $openssl_cflags && add_extralibs $openssl_libs; }||
4696                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4697                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4698                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4699                                die "ERROR: openssl not found"; }
4700
4701 enabled gnutls            && check_lib gmp.h mpz_export -lgmp && enable gmp
4702
4703 if enabled nvenc; then
4704     check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."
4705     check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6" ||
4706         die "ERROR: NVENC API version 5 or older is not supported"
4707 fi
4708
4709 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4710     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4711     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4712     enable sdl
4713 fi
4714
4715 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man
4716 ! disabled texi2html && check_cmd texi2html -version && enable texi2html || disable texi2html
4717
4718 check_header linux/fb.h
4719 check_header linux/videodev2.h
4720 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4721
4722 check_header AVFoundation/AVFoundation.h &&
4723     check_objcflags -fobjc-arc &&
4724     add_extralibs -framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia ||
4725     disable AVFoundation_AVFoundation_h
4726
4727 check_header sys/videoio.h
4728
4729 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4730 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4731 # w32api 3.12 had it defined wrong
4732 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4733
4734 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4735 { check_header dev/bktr/ioctl_meteor.h &&
4736   check_header dev/bktr/ioctl_bt848.h; } ||
4737 { check_header machine/ioctl_meteor.h &&
4738   check_header machine/ioctl_bt848.h; } ||
4739 { check_header dev/video/meteor/ioctl_meteor.h &&
4740   check_header dev/video/bktr/ioctl_bt848.h; } ||
4741 check_header dev/ic/bt8xx.h
4742
4743 check_header sndio.h
4744 check_header sys/soundcard.h
4745 check_header soundcard.h
4746
4747 enabled_any alsa_indev alsa_outdev &&
4748     check_lib alsa/asoundlib.h snd_pcm_htimestamp -lasound
4749
4750 enabled jack_indev && check_lib jack/jack.h jack_client_open -ljack &&
4751     check_func jack_port_get_latency_range -ljack
4752
4753 enabled_any sndio_indev sndio_outdev && check_lib sndio.h sio_open -lsndio
4754
4755 if enabled libcdio; then
4756     check_lib "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4757     check_lib "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4758     die "ERROR: No usable libcdio/cdparanoia found"
4759 fi
4760
4761 if enabled libxcb; then
4762     check_pkg_config xcb-shape xcb/shape.h xcb_shape_rectangles || {
4763         enabled libxcb && die "ERROR: libxcb not found";
4764     } && enable libxcb
4765
4766     disabled libxcb_shm ||
4767         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
4768             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
4769         } && check_header sys/shm.h && enable libxcb_shm
4770
4771     disabled libxcb_xfixes ||
4772         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
4773             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
4774         } && enable libxcb_xfixes
4775
4776     add_cflags "$xcb_shape_cflags $xcb_shm_cflags $xcb_xfixes_cflags"
4777     add_extralibs "$xcb_shape_libs $xcb_shm_libs $xcb_xfixes_libs"
4778 fi
4779
4780 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4781
4782 enabled vaapi &&
4783     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
4784     disable vaapi
4785
4786 enabled vaapi &&
4787     check_lib "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
4788     enable vaapi_drm
4789
4790 enabled vaapi &&
4791     check_lib "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 -lX11 &&
4792     enable vaapi_x11
4793
4794 enabled vdpau &&
4795     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4796     disable vdpau
4797
4798 enabled vdpau &&
4799     check_lib "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau -lX11 &&
4800     enable vdpau_x11
4801
4802 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4803
4804 # add some useful compiler flags if supported
4805 check_cflags -Wdeclaration-after-statement
4806 check_cflags -Wall
4807 check_cflags -Wdisabled-optimization
4808 check_cflags -Wpointer-arith
4809 check_cflags -Wredundant-decls
4810 check_cflags -Wwrite-strings