lavc/vaapi: Add VP8 decode hwaccel
[libav.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89   --enable-rpath           use rpath when linking programs [USE WITH CARE]
90
91 Licensing options:
92   --enable-gpl             allow use of GPL code, the resulting libs
93                            and binaries will be under GPL [no]
94   --enable-version3        upgrade (L)GPL to version 3 [no]
95   --enable-nonfree         allow use of nonfree code, the resulting libs
96                            and binaries will be unredistributable [no]
97
98 Configuration options:
99   --disable-static         do not build static libraries [no]
100   --enable-shared          build shared libraries [no]
101   --enable-small           optimize for size instead of speed
102   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
103   --enable-gray            enable full grayscale support (slower color)
104   --disable-swscale-alpha  disable alpha channel support in swscale
105   --disable-all            disable building components, libraries and programs
106
107 Program options:
108   --disable-programs       do not build command line programs
109   --disable-avconv         disable avconv build
110   --disable-avplay         disable avplay build
111   --disable-avprobe        disable avprobe build
112   --disable-avserver       deprecated, does nothing
113
114 Component options:
115   --disable-doc            do not build documentation
116   --disable-pod2man        do not build manual pages
117   --disable-texi2html      do not build HTML documentation
118   --disable-avdevice       disable libavdevice build
119   --disable-avcodec        disable libavcodec build
120   --disable-avformat       disable libavformat build
121   --disable-avutil         disable libavutil build
122   --disable-swscale        disable libswscale build
123   --disable-avfilter       disable video filter support [no]
124   --disable-avresample     disable libavresample build [no]
125   --disable-pthreads       disable pthreads [auto]
126   --disable-w32threads     disable Win32 threads [auto]
127   --disable-network        disable network support [no]
128   --disable-dct            disable DCT code
129   --disable-error-resilience disable error resilience code
130   --disable-lsp            disable LSP code
131   --disable-lzo            disable LZO decoder code
132   --disable-mdct           disable MDCT code
133   --disable-rdft           disable RDFT code
134   --disable-fft            disable FFT code
135   --disable-faan           disable floating point AAN (I)DCT code
136
137 Individual component options:
138   --disable-everything     disable all components listed below
139   --disable-encoder=NAME   disable encoder NAME
140   --enable-encoder=NAME    enable encoder NAME
141   --disable-encoders       disable all encoders
142   --disable-decoder=NAME   disable decoder NAME
143   --enable-decoder=NAME    enable decoder NAME
144   --disable-decoders       disable all decoders
145   --disable-hwaccel=NAME   disable hwaccel NAME
146   --enable-hwaccel=NAME    enable hwaccel NAME
147   --disable-hwaccels       disable all hwaccels
148   --disable-muxer=NAME     disable muxer NAME
149   --enable-muxer=NAME      enable muxer NAME
150   --disable-muxers         disable all muxers
151   --disable-demuxer=NAME   disable demuxer NAME
152   --enable-demuxer=NAME    enable demuxer NAME
153   --disable-demuxers       disable all demuxers
154   --enable-parser=NAME     enable parser NAME
155   --disable-parser=NAME    disable parser NAME
156   --disable-parsers        disable all parsers
157   --enable-bsf=NAME        enable bitstream filter NAME
158   --disable-bsf=NAME       disable bitstream filter NAME
159   --disable-bsfs           disable all bitstream filters
160   --enable-protocol=NAME   enable protocol NAME
161   --disable-protocol=NAME  disable protocol NAME
162   --disable-protocols      disable all protocols
163   --enable-indev=NAME      enable input device NAME
164   --disable-indev=NAME     disable input device NAME
165   --disable-indevs         disable input devices
166   --enable-outdev=NAME     enable output device NAME
167   --disable-outdev=NAME    disable output device NAME
168   --disable-outdevs        disable output devices
169   --disable-devices        disable all devices
170   --enable-filter=NAME     enable filter NAME
171   --disable-filter=NAME    disable filter NAME
172   --disable-filters        disable all filters
173
174 External library support:
175
176   Using any of the following switches will allow Libav to link to the
177   corresponding external library. All the components depending on that library
178   will become enabled, if all their other dependencies are met and they are not
179   explicitly disabled. E.g. --enable-libwavpack will enable linking to
180   libwavpack and allow the libwavpack encoder to be built, unless it is
181   specifically disabled with --disable-encoder=libwavpack.
182
183   Note that only the system libraries are auto-detected. All the other external
184   libraries must be explicitly enabled.
185
186   Also note that the following help text describes the purpose of the libraries
187   themselves, not all their features will necessarily be usable by Libav.
188
189   --enable-avisynth          video frameserver
190   --enable-bzlib             bzip2 compression [autodetect]
191   --enable-frei0r            video filtering plugins
192   --enable-gnutls            crypto
193   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
194   --enable-libcdio           audio CD input
195   --enable-libdc1394         IEEE 1394/Firewire camera input
196   --enable-libdcadec         DCA audio decoding
197   --enable-libfaac           AAC audio encoding
198   --enable-libfdk-aac        AAC audio encoding/decoding
199   --enable-libfontconfig     font configuration and management
200   --enable-libfreetype       font rendering
201   --enable-libgsm            GSM audio encoding/decoding
202   --enable-libhdcd           HDCD decoding filter
203   --enable-libilbc           ILBC audio encoding/decoding
204   --enable-libkvazaar        HEVC video encoding
205   --enable-libmp3lame        MP3 audio encoding
206   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
207   --enable-libopencore-amrwb AMR-WB audio decoding
208   --enable-libopencv         computer vision
209   --enable-libopenh264       H.264 video encoding/decoding
210   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
211   --enable-libopus           Opus audio encoding/decoding
212   --enable-libpulse          Pulseaudio sound server
213   --enable-librtmp           RTMP streaming
214   --enable-libschroedinger   Dirac video encoding/decoding
215   --enable-libsnappy         snappy compression
216   --enable-libspeex          Speex audio encoding/decoding
217   --enable-libtheora         Theora video encoding/decoding
218   --enable-libtwolame        MP2 audio encoding
219   --enable-libvo-aacenc      AAC audio encoding
220   --enable-libvo-amrwbenc    AMR-WB audio encoding
221   --enable-libvorbis         Vorbis audio encoding/decoding
222   --enable-libvpx            VP* video encoding/decoding
223   --enable-libwavpack        Wavpack audio encoding/decoding
224   --enable-libwebp           WebP image encoding/decoding
225   --enable-libx264           H.264 video encoding
226   --enable-libx265           HEVC video encoding
227   --enable-libxavs           Chinese AVS video encoding
228   --enable-libxcb            X window system protocol communication
229   --enable-libxcb-shm        X11 shm communication [auto]
230   --enable-libxcb-xfixes     X11 mouse rendering [auto]
231   --enable-libxvid           MPEG-4 ASP video encoding
232   --enable-openssl           crypto
233   --enable-zlib              compression [autodetect]
234
235   The following libraries provide various hardware acceleration features:
236   --enable-cuda    Nvidia CUDA (dynamically linked)
237   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
238   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
239   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
240   --enable-libnpp  Nvidia CUDA processing
241   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
242   --enable-nvenc   Nvidia video encoding
243   --enable-omx     OpenMAX IL
244   --enable-omx-rpi OpenMAX IL for Raspberry Pi
245   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
246   --enable-vda     Apple Video Decode Acceleration [auto]
247   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
248
249 Toolchain options:
250   --arch=ARCH              select architecture [$arch]
251   --cpu=CPU                select the minimum required CPU (affects
252                            instruction selection, may crash on older CPUs)
253   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
254   --enable-cross-compile   assume a cross-compiler is used
255   --sysroot=PATH           root of cross-build tree
256   --sysinclude=PATH        location of cross-build system headers
257   --target-os=OS           compiler targets OS [$target_os]
258   --target-exec=CMD        command to run executables on target
259   --target-path=DIR        path to view of build directory on target
260   --target-samples=DIR     path to samples directory on target
261   --toolchain=NAME         set tool defaults according to NAME
262   --nm=NM                  use nm tool
263   --ar=AR                  use archive tool AR [$ar_default]
264   --as=AS                  use assembler AS [$as_default]
265   --cc=CC                  use C compiler CC [$cc_default]
266   --objcc=OCC              use ObjC compiler OCC [$cc_default]
267   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
268   --ld=LD                  use linker LD
269   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
270   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
271   --host-cc=HOSTCC         use host C compiler HOSTCC
272   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
273   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
274   --host-ld=HOSTLD         use host linker HOSTLD
275   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
276   --host-libs=HLIBS        use libs HLIBS when linking for host
277   --host-os=OS             compiler host OS [$target_os]
278   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
279   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
280   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
281   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
282   --extra-libs=ELIBS       add ELIBS [$ELIBS]
283   --extra-version=STRING   version string suffix []
284   --optflags=OPTFLAGS      override optimization-related compiler flags
285   --build-suffix=SUFFIX    library name suffix []
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) echo $v ;; esac"
432     done
433 }
434
435 filter_out(){
436     pat=$1
437     shift
438     for v; do
439         eval "case $v in $pat) ;; *) echo $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_cc "$@" <<EOF && append CPPFLAGS "$@"
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 "$@"
883 }
884
885 test_objcflags(){
886     log test_cflags "$@"
887     set -- $($cflags_filter "$@")
888     check_objcc "$@" <<EOF
889 int x;
890 EOF
891 }
892
893 check_objcflags(){
894     log check_cflags "$@"
895     test_objcflags "$@" && 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: $condition"
985 #endif
986 EOF
987 }
988
989 check_lib(){
990     log check_lib "$@"
991     header="$1"
992     func="$2"
993     shift 2
994     check_header $header && check_func $func "$@" && add_extralibs "$@"
995 }
996
997 check_lib2(){
998     log check_lib2 "$@"
999     headers="$1"
1000     funcs="$2"
1001     shift 2
1002     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1003 }
1004
1005 check_pkg_config(){
1006     log check_pkg_config "$@"
1007     pkg="$1"
1008     headers="$2"
1009     funcs="$3"
1010     shift 3
1011     check_cmd $pkg_config --exists --print-errors $pkg || return
1012     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1013     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1014     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1015         set_safe "${pkg}_cflags" $pkg_cflags   &&
1016         set_safe "${pkg}_libs"   $pkg_libs
1017 }
1018
1019 check_exec(){
1020     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1021 }
1022
1023 check_exec_crash(){
1024     code=$(cat)
1025
1026     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1027     # are safe but may not be available everywhere.  Thus we use
1028     # raise(SIGTERM) instead.  The check is run in a subshell so we
1029     # can redirect the "Terminated" message from the shell.  SIGBUS
1030     # is not defined by standard C so it is used conditionally.
1031
1032     (check_exec "$@") >> $logfile 2>&1 <<EOF
1033 #include <signal.h>
1034 static void sighandler(int sig){
1035     raise(SIGTERM);
1036 }
1037 int foo(void){
1038     $code
1039 }
1040 int (*func_ptr)(void) = foo;
1041 int main(void){
1042     signal(SIGILL, sighandler);
1043     signal(SIGFPE, sighandler);
1044     signal(SIGSEGV, sighandler);
1045 #ifdef SIGBUS
1046     signal(SIGBUS, sighandler);
1047 #endif
1048     return func_ptr();
1049 }
1050 EOF
1051 }
1052
1053 check_type(){
1054     log check_type "$@"
1055     headers=$1
1056     type=$2
1057     shift 2
1058     disable_safe "$type"
1059     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1060 }
1061
1062 check_struct(){
1063     log check_struct "$@"
1064     headers=$1
1065     struct=$2
1066     member=$3
1067     shift 3
1068     disable_safe "${struct}_${member}"
1069     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1070         enable_safe "${struct}_${member}"
1071 }
1072
1073 check_builtin(){
1074     log check_builtin "$@"
1075     name=$1
1076     headers=$2
1077     builtin=$3
1078     shift 3
1079     disable "$name"
1080     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1081 }
1082
1083 check_compile_assert(){
1084     log check_compile_assert "$@"
1085     name=$1
1086     headers=$2
1087     condition=$3
1088     shift 3
1089     disable "$name"
1090     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1091 }
1092
1093 require(){
1094     name="$1"
1095     header="$2"
1096     func="$3"
1097     shift 3
1098     check_lib $header $func "$@" || die "ERROR: $name not found"
1099 }
1100
1101 require2(){
1102     name="$1"
1103     headers="$2"
1104     func="$3"
1105     shift 3
1106     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1107 }
1108
1109 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_cc "$@" <<EOF && append host_cppflags "$@"
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" && 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     avcodec_example
1216     filter_audio_example
1217     metadata_example
1218     output_example
1219     qsvdec_example
1220     transcode_aac_example
1221 "
1222
1223 HWACCEL_LIBRARY_NONFREE_LIST="
1224     cuda
1225     libnpp
1226 "
1227 HWACCEL_LIBRARY_LIST="
1228     $HWACCEL_LIBRARY_NONFREE_LIST
1229     d3d11va
1230     dxva2
1231     libmfx
1232     mmal
1233     nvenc
1234     omx
1235     vaapi
1236     vda
1237     vdpau
1238 "
1239
1240 EXTERNAL_LIBRARY_GPL_LIST="
1241     libcdio
1242     libx264
1243     libx265
1244     libxavs
1245     libxvid
1246 "
1247
1248 EXTERNAL_LIBRARY_NONFREE_LIST="
1249     libfaac
1250     libfdk_aac
1251     openssl
1252 "
1253
1254 EXTERNAL_LIBRARY_VERSION3_LIST="
1255     libopencore_amrnb
1256     libopencore_amrwb
1257     libvo_aacenc
1258     libvo_amrwbenc
1259 "
1260
1261 EXTERNAL_LIBRARY_LIST="
1262     $EXTERNAL_LIBRARY_GPL_LIST
1263     $EXTERNAL_LIBRARY_NONFREE_LIST
1264     $EXTERNAL_LIBRARY_VERSION3_LIST
1265     avisynth
1266     bzlib
1267     frei0r
1268     gnutls
1269     libbs2b
1270     libdc1394
1271     libdcadec
1272     libfontconfig
1273     libfreetype
1274     libgsm
1275     libhdcd
1276     libilbc
1277     libkvazaar
1278     libmp3lame
1279     libopencv
1280     libopenh264
1281     libopenjpeg
1282     libopus
1283     libpulse
1284     librtmp
1285     libschroedinger
1286     libsnappy
1287     libspeex
1288     libtheora
1289     libtwolame
1290     libvorbis
1291     libvpx
1292     libwavpack
1293     libwebp
1294     libxcb
1295     libxcb_shm
1296     libxcb_xfixes
1297     zlib
1298 "
1299
1300 FEATURE_LIST="
1301     gray
1302     hardcoded_tables
1303     omx_rpi
1304     runtime_cpudetect
1305     safe_bitstream_reader
1306     shared
1307     small
1308     sram
1309     static
1310     swscale_alpha
1311 "
1312
1313 LIBRARY_LIST="
1314     avcodec
1315     avdevice
1316     avfilter
1317     avformat
1318     avresample
1319     avutil
1320     swscale
1321 "
1322
1323 LICENSE_LIST="
1324     gpl
1325     nonfree
1326     version3
1327 "
1328
1329 PROGRAM_LIST="
1330     avconv
1331     avplay
1332     avprobe
1333 "
1334
1335 SUBSYSTEM_LIST="
1336     dct
1337     doc
1338     error_resilience
1339     faan
1340     fft
1341     lsp
1342     lzo
1343     mdct
1344     network
1345     rdft
1346 "
1347
1348 CONFIG_LIST="
1349     $COMPONENT_LIST
1350     $EXAMPLE_LIST
1351     $EXTERNAL_LIBRARY_LIST
1352     $HWACCEL_LIBRARY_LIST
1353     $FEATURE_LIST
1354     $LICENSE_LIST
1355     $LIBRARY_LIST
1356     $PROGRAM_LIST
1357     $SUBSYSTEM_LIST
1358     neon_clobber_test
1359     pic
1360     pod2man
1361     texi2html
1362     thumb
1363     valgrind_backtrace
1364     xmm_clobber_test
1365 "
1366
1367 THREADS_LIST="
1368     pthreads
1369     w32threads
1370 "
1371
1372 ATOMICS_LIST="
1373     atomics_gcc
1374     atomics_suncc
1375     atomics_win32
1376 "
1377
1378 ARCH_LIST="
1379     aarch64
1380     alpha
1381     arm
1382     avr32
1383     avr32_ap
1384     avr32_uc
1385     bfin
1386     ia64
1387     m68k
1388     mips
1389     mips64
1390     parisc
1391     ppc
1392     ppc64
1393     s390
1394     sh4
1395     sparc
1396     sparc64
1397     tilegx
1398     tilepro
1399     tomi
1400     x86
1401     x86_32
1402     x86_64
1403 "
1404
1405 ARCH_EXT_LIST_ARM="
1406     armv5te
1407     armv6
1408     armv6t2
1409     armv8
1410     neon
1411     vfp
1412     vfpv3
1413 "
1414
1415 ARCH_EXT_LIST_X86_SIMD="
1416     amd3dnow
1417     amd3dnowext
1418     avx
1419     avx2
1420     fma3
1421     fma4
1422     mmx
1423     mmxext
1424     sse
1425     sse2
1426     sse3
1427     sse4
1428     sse42
1429     ssse3
1430     xop
1431 "
1432
1433 ARCH_EXT_LIST_PPC="
1434     altivec
1435     dcbzl
1436     ldbrx
1437     power8
1438     ppc4xx
1439     vsx
1440 "
1441
1442 ARCH_EXT_LIST_X86="
1443     $ARCH_EXT_LIST_X86_SIMD
1444     cpunop
1445     i686
1446 "
1447
1448 ARCH_EXT_LIST_MIPS="
1449     loongson
1450     mips32r1
1451     mips64r1
1452     mips32r2
1453     mips64r2
1454     mips32r6
1455     mips64r6
1456 "
1457
1458 ARCH_EXT_LIST="
1459     $ARCH_EXT_LIST_ARM
1460     $ARCH_EXT_LIST_MIPS
1461     $ARCH_EXT_LIST_PPC
1462     $ARCH_EXT_LIST_X86
1463     vis
1464 "
1465
1466 ARCH_FEATURES="
1467     aligned_stack
1468     fast_64bit
1469     fast_clz
1470     fast_cmov
1471     local_aligned_8
1472     local_aligned_16
1473     local_aligned_32
1474     simd_align_16
1475     simd_align_32
1476 "
1477
1478 BUILTIN_LIST="
1479     atomic_cas_ptr
1480     machine_rw_barrier
1481     MemoryBarrier
1482     mm_empty
1483     rdtsc
1484     sem_timedwait
1485     sync_val_compare_and_swap
1486 "
1487 HAVE_LIST_CMDLINE="
1488     inline_asm
1489     symver
1490     yasm
1491 "
1492
1493 HAVE_LIST_PUB="
1494     bigendian
1495     fast_unaligned
1496 "
1497
1498 HEADERS_LIST="
1499     AVFoundation_AVFoundation_h
1500     alsa_asoundlib_h
1501     altivec_h
1502     arpa_inet_h
1503     cdio_paranoia_h
1504     cdio_paranoia_paranoia_h
1505     dispatch_dispatch_h
1506     dev_bktr_ioctl_bt848_h
1507     dev_bktr_ioctl_meteor_h
1508     dev_ic_bt8xx_h
1509     dev_video_bktr_ioctl_bt848_h
1510     dev_video_meteor_ioctl_meteor_h
1511     direct_h
1512     dlfcn_h
1513     d3d11_h
1514     dxva_h
1515     gsm_h
1516     io_h
1517     mach_mach_time_h
1518     machine_ioctl_bt848_h
1519     machine_ioctl_meteor_h
1520     malloc_h
1521     poll_h
1522     sndio_h
1523     soundcard_h
1524     sys_mman_h
1525     sys_param_h
1526     sys_resource_h
1527     sys_select_h
1528     sys_soundcard_h
1529     sys_time_h
1530     sys_un_h
1531     sys_videoio_h
1532     unistd_h
1533     valgrind_valgrind_h
1534     windows_h
1535     winsock2_h
1536 "
1537
1538 INTRINSICS_LIST="
1539     intrinsics_neon
1540 "
1541
1542 MATH_FUNCS="
1543     atanf
1544     atan2f
1545     cbrtf
1546     cosf
1547     exp2
1548     exp2f
1549     expf
1550     isinf
1551     isnan
1552     ldexpf
1553     llrint
1554     llrintf
1555     log2
1556     log2f
1557     log10f
1558     lrint
1559     lrintf
1560     powf
1561     rint
1562     round
1563     roundf
1564     sinf
1565     trunc
1566     truncf
1567 "
1568
1569 SYSTEM_FUNCS="
1570     aligned_malloc
1571     clock_gettime
1572     closesocket
1573     CommandLineToArgvW
1574     CoTaskMemFree
1575     CryptGenRandom
1576     dlopen
1577     fcntl
1578     flt_lim
1579     fork
1580     getaddrinfo
1581     gethrtime
1582     getopt
1583     GetProcessAffinityMask
1584     GetProcessMemoryInfo
1585     GetProcessTimes
1586     getrusage
1587     GetSystemTimeAsFileTime
1588     gettimeofday
1589     gmtime_r
1590     inet_aton
1591     isatty
1592     jack_port_get_latency_range
1593     LoadLibrary
1594     localtime_r
1595     mach_absolute_time
1596     MapViewOfFile
1597     memalign
1598     mkstemp
1599     mmap
1600     mprotect
1601     nanosleep
1602     posix_memalign
1603     sched_getaffinity
1604     SetConsoleTextAttribute
1605     setmode
1606     setrlimit
1607     Sleep
1608     strerror_r
1609     sysconf
1610     sysctl
1611     usleep
1612     VirtualAlloc
1613 "
1614
1615 TOOLCHAIN_FEATURES="
1616     as_dn_directive
1617     as_fpu_directive
1618     as_func
1619     as_object_arch
1620     asm_mod_q
1621     attribute_may_alias
1622     attribute_packed
1623     ebp_available
1624     ebx_available
1625     gnu_as
1626     ibm_asm
1627     inline_asm_labels
1628     pragma_deprecated
1629     symver_asm_label
1630     symver_gnu_asm
1631     vfp_args
1632     xform_asm
1633     xmm_clobbers
1634 "
1635
1636 TYPES_LIST="
1637     CONDITION_VARIABLE_Ptr
1638     socklen_t
1639     struct_addrinfo
1640     struct_group_source_req
1641     struct_ip_mreq_source
1642     struct_ipv6_mreq
1643     struct_pollfd
1644     struct_rusage_ru_maxrss
1645     struct_sockaddr_in6
1646     struct_sockaddr_sa_len
1647     struct_sockaddr_storage
1648     struct_v4l2_frmivalenum_discrete
1649 "
1650
1651 HAVE_LIST="
1652     $ARCH_EXT_LIST
1653     $(add_suffix _external $ARCH_EXT_LIST)
1654     $(add_suffix _inline   $ARCH_EXT_LIST)
1655     $ARCH_FEATURES
1656     $ATOMICS_LIST
1657     $BUILTIN_LIST
1658     $HAVE_LIST_CMDLINE
1659     $HAVE_LIST_PUB
1660     $HEADERS_LIST
1661     $INTRINSICS_LIST
1662     $MATH_FUNCS
1663     $SYSTEM_FUNCS
1664     $THREADS_LIST
1665     $TOOLCHAIN_FEATURES
1666     $TYPES_LIST
1667     atomics_native
1668     dos_paths
1669     dxva2_lib
1670     libc_msvcrt
1671     libdc1394_1
1672     libdc1394_2
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     xlib
1681 "
1682
1683 # options emitted with CONFIG_ prefix but not available on the command line
1684 CONFIG_EXTRA="
1685     aandcttables
1686     ac3dsp
1687     audio_frame_queue
1688     audiodsp
1689     blockdsp
1690     bswapdsp
1691     cabac
1692     dirac_parse
1693     dvprofile
1694     faandct
1695     faanidct
1696     fdctdsp
1697     flacdsp
1698     fmtconvert
1699     g722dsp
1700     gcrypt
1701     gmp
1702     golomb
1703     gplv3
1704     h263dsp
1705     h264chroma
1706     h264dsp
1707     h264parse
1708     h264pred
1709     h264qpel
1710     hpeldsp
1711     huffman
1712     huffyuvdsp
1713     huffyuvencdsp
1714     idctdsp
1715     iirfilter
1716     imdct15
1717     intrax8
1718     iso_media
1719     ividsp
1720     jpegtables
1721     libx262
1722     lgplv3
1723     lpc
1724     lzf
1725     me_cmp
1726     mpeg_er
1727     mpegaudio
1728     mpegaudiodsp
1729     mpegvideo
1730     mpegvideoenc
1731     mss34dsp
1732     pixblockdsp
1733     qpeldsp
1734     qsv
1735     qsvdec
1736     qsvenc
1737     rangecoder
1738     riffdec
1739     riffenc
1740     rtpdec
1741     rtpenc_chain
1742     rv34dsp
1743     sinewin
1744     snappy
1745     srtp
1746     startcode
1747     texturedsp
1748     texturedspenc
1749     tpeldsp
1750     vaapi_encode
1751     vc1dsp
1752     videodsp
1753     vp3dsp
1754     vp56dsp
1755     vp8dsp
1756     wma_freqs
1757     wmv2dsp
1758 "
1759
1760 CMDLINE_SELECT="
1761     $ARCH_EXT_LIST
1762     $CONFIG_LIST
1763     $HAVE_LIST_CMDLINE
1764     $THREADS_LIST
1765     asm
1766     cross_compile
1767     debug
1768     extra_warnings
1769     logging
1770     lto
1771     optimizations
1772     rpath
1773 "
1774
1775 PATHS_LIST="
1776     bindir
1777     datadir
1778     docdir
1779     incdir
1780     libdir
1781     mandir
1782     prefix
1783     shlibdir
1784 "
1785
1786 CMDLINE_SET="
1787     $PATHS_LIST
1788     ar
1789     arch
1790     as
1791     build_suffix
1792     cc
1793     objcc
1794     cpu
1795     cross_prefix
1796     custom_allocator
1797     dep_cc
1798     env
1799     extra_version
1800     host_cc
1801     host_cflags
1802     host_ld
1803     host_ldflags
1804     host_libs
1805     host_os
1806     ld
1807     logfile
1808     malloc_prefix
1809     nm
1810     optflags
1811     pkg_config
1812     pkg_config_flags
1813     random_seed
1814     samples
1815     sysinclude
1816     sysroot
1817     target_exec
1818     target_os
1819     target_path
1820     target_samples
1821     toolchain
1822 "
1823
1824 CMDLINE_APPEND="
1825     extra_cflags
1826     extra_objcflags
1827     host_cppflags
1828 "
1829
1830 # code dependency declarations
1831
1832 # architecture extensions
1833
1834 armv5te_deps="arm"
1835 armv6_deps="arm"
1836 armv6t2_deps="arm"
1837 armv8_deps="aarch64"
1838 neon_deps_any="aarch64 arm"
1839 intrinsics_neon_deps="neon"
1840 vfp_deps_any="aarch64 arm"
1841 vfpv3_deps="vfp"
1842
1843 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1844
1845 altivec_deps="ppc"
1846 ppc4xx_deps="ppc"
1847 vsx_deps="altivec"
1848 power8_deps="vsx"
1849
1850 cpunop_deps="i686"
1851 x86_64_select="i686"
1852 x86_64_suggest="fast_cmov"
1853
1854 amd3dnow_deps="mmx"
1855 amd3dnowext_deps="amd3dnow"
1856 i686_deps="x86"
1857 mmx_deps="x86"
1858 mmxext_deps="mmx"
1859 sse_deps="mmxext"
1860 sse2_deps="sse"
1861 sse3_deps="sse2"
1862 ssse3_deps="sse3"
1863 sse4_deps="ssse3"
1864 sse42_deps="sse4"
1865 avx_deps="sse42"
1866 xop_deps="avx"
1867 fma3_deps="avx"
1868 fma4_deps="avx"
1869 avx2_deps="avx"
1870
1871 mmx_external_deps="yasm"
1872 mmx_inline_deps="inline_asm"
1873 mmx_suggest="mmx_external mmx_inline"
1874
1875 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1876     eval dep=\$${ext}_deps
1877     eval ${ext}_external_deps='"${dep}_external"'
1878     eval ${ext}_inline_deps='"${dep}_inline"'
1879     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1880 done
1881
1882 aligned_stack_if_any="aarch64 ppc x86"
1883 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1884 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1885 fast_unaligned_if_any="aarch64 ppc x86"
1886 simd_align_16_if_any="altivec neon sse"
1887 simd_align_32_if_any="avx"
1888
1889 # system capabilities
1890 symver_if_any="symver_asm_label symver_gnu_asm"
1891 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1892
1893 # threading support
1894 atomics_gcc_if="sync_val_compare_and_swap"
1895 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1896 atomics_win32_if="MemoryBarrier"
1897 atomics_native_if_any="$ATOMICS_LIST"
1898 w32threads_deps="atomics_native"
1899 threads_if_any="$THREADS_LIST"
1900
1901 # subsystems
1902 dct_select="rdft"
1903 dirac_parse_select="golomb"
1904 error_resilience_select="me_cmp"
1905 faandct_deps="faan fdctdsp"
1906 faanidct_deps="faan idctdsp"
1907 h264dsp_select="startcode"
1908 intrax8_select="blockdsp idctdsp"
1909 mdct_select="fft"
1910 rdft_select="fft"
1911 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1912 mpeg_er_select="error_resilience"
1913 mpegaudio_select="mpegaudiodsp"
1914 mpegaudiodsp_select="dct"
1915 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1916 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1917 vc1dsp_select="h264chroma qpeldsp startcode"
1918
1919 # decoders / encoders
1920 aac_decoder_select="imdct15 mdct sinewin"
1921 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1922 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1923 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1924 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1925 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1926 adpcm_g722_decoder_select="g722dsp"
1927 adpcm_g722_encoder_select="g722dsp"
1928 aic_decoder_select="golomb idctdsp"
1929 alac_encoder_select="lpc"
1930 als_decoder_select="bswapdsp"
1931 amrnb_decoder_select="lsp"
1932 amrwb_decoder_select="lsp"
1933 amv_decoder_select="sp5x_decoder"
1934 ape_decoder_select="bswapdsp"
1935 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1936 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1937 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1938 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1939 atrac1_decoder_select="mdct sinewin"
1940 atrac3_decoder_select="mdct"
1941 atrac3p_decoder_select="mdct sinewin"
1942 bink_decoder_select="blockdsp hpeldsp"
1943 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1944 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1945 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1946 cllc_decoder_select="bswapdsp"
1947 comfortnoise_encoder_select="lpc"
1948 cook_decoder_select="audiodsp mdct sinewin"
1949 cscd_decoder_select="lzo"
1950 cscd_decoder_suggest="zlib"
1951 dca_decoder_select="fmtconvert mdct"
1952 dds_decoder_select="texturedsp"
1953 dnxhd_decoder_select="blockdsp idctdsp"
1954 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1955 dvvideo_decoder_select="dvprofile idctdsp"
1956 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1957 dxa_decoder_deps="zlib"
1958 dxv_decoder_select="lzf texturedsp"
1959 eac3_decoder_select="ac3_decoder"
1960 eac3_encoder_select="ac3_encoder"
1961 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1962 eatgq_decoder_select="aandcttables idctdsp"
1963 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
1964 exr_decoder_deps="zlib"
1965 ffv1_decoder_select="golomb rangecoder"
1966 ffv1_encoder_select="rangecoder"
1967 ffvhuff_decoder_select="huffyuv_decoder"
1968 ffvhuff_encoder_select="huffyuv_encoder"
1969 fic_decoder_select="golomb"
1970 flac_decoder_select="flacdsp golomb"
1971 flac_encoder_select="bswapdsp flacdsp golomb lpc"
1972 flashsv_decoder_deps="zlib"
1973 flashsv_encoder_deps="zlib"
1974 flashsv2_decoder_deps="zlib"
1975 flv_decoder_select="h263_decoder"
1976 flv_encoder_select="h263_encoder"
1977 fourxm_decoder_select="blockdsp bswapdsp"
1978 fraps_decoder_select="bswapdsp huffman"
1979 g2m_decoder_deps="zlib"
1980 g2m_decoder_select="blockdsp idctdsp jpegtables"
1981 h261_decoder_select="mpeg_er mpegvideo"
1982 h261_encoder_select="aandcttables mpegvideoenc"
1983 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1984 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1985 h263i_decoder_select="h263_decoder"
1986 h263p_encoder_select="h263_encoder"
1987 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
1988 h264_decoder_suggest="error_resilience"
1989 hap_decoder_select="snappy texturedsp"
1990 hap_encoder_deps="libsnappy"
1991 hap_encoder_select="texturedspenc"
1992 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1993 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1994 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1995 iac_decoder_select="imc_decoder"
1996 imc_decoder_select="bswapdsp fft mdct sinewin"
1997 indeo3_decoder_select="hpeldsp"
1998 indeo4_decoder_select="ividsp"
1999 indeo5_decoder_select="ividsp"
2000 interplay_video_decoder_select="hpeldsp"
2001 jpegls_decoder_select="golomb mjpeg_decoder"
2002 jpegls_encoder_select="golomb"
2003 jv_decoder_select="blockdsp"
2004 lagarith_decoder_select="huffyuvdsp"
2005 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2006 loco_decoder_select="golomb"
2007 magicyuv_decoder_select="huffyuvdsp"
2008 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2009 metasound_decoder_select="lsp mdct sinewin"
2010 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2011 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2012 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2013 mjpegb_decoder_select="mjpeg_decoder"
2014 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2015 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2016 mlp_decoder_select="mlp_parser"
2017 motionpixels_decoder_select="bswapdsp"
2018 mp1_decoder_select="mpegaudio"
2019 mp1float_decoder_select="mpegaudio"
2020 mp2_decoder_select="mpegaudio"
2021 mp2float_decoder_select="mpegaudio"
2022 mp3_decoder_select="mpegaudio"
2023 mp3adu_decoder_select="mpegaudio"
2024 mp3adufloat_decoder_select="mpegaudio"
2025 mp3float_decoder_select="mpegaudio"
2026 mp3on4_decoder_select="mpegaudio"
2027 mp3on4float_decoder_select="mpegaudio"
2028 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2029 mpc8_decoder_select="mpegaudiodsp"
2030 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2031 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2032 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2033 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2034 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2035 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2036 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2037 mpeg4_encoder_select="h263_encoder"
2038 msa1_decoder_select="mss34dsp"
2039 msmpeg4v1_decoder_select="h263_decoder"
2040 msmpeg4v2_decoder_select="h263_decoder"
2041 msmpeg4v2_encoder_select="h263_encoder"
2042 msmpeg4v3_decoder_select="h263_decoder"
2043 msmpeg4v3_encoder_select="h263_encoder"
2044 mss2_decoder_select="error_resilience mpeg_er mpegvideo vc1_decoder"
2045 mts2_decoder_select="mss34dsp"
2046 mxpeg_decoder_select="mjpeg_decoder"
2047 nellymoser_decoder_select="mdct sinewin"
2048 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2049 nuv_decoder_select="idctdsp lzo"
2050 on2avc_decoder_select="mdct"
2051 opus_decoder_deps="avresample"
2052 opus_decoder_select="imdct15"
2053 png_decoder_deps="zlib"
2054 png_encoder_deps="zlib"
2055 png_encoder_select="huffyuvencdsp"
2056 prores_decoder_select="idctdsp"
2057 prores_encoder_select="fdctdsp"
2058 qcelp_decoder_select="lsp"
2059 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2060 ra_144_encoder_select="audio_frame_queue lpc"
2061 ralf_decoder_select="golomb"
2062 rscc_decoder_deps="zlib"
2063 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2064 rv10_encoder_select="h263_encoder"
2065 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2066 rv20_encoder_select="h263_encoder"
2067 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2068 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2069 screenpresso_decoder_deps="zlib"
2070 shorten_decoder_select="golomb"
2071 sipr_decoder_select="lsp"
2072 sp5x_decoder_select="mjpeg_decoder"
2073 svq1_decoder_select="hpeldsp"
2074 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2075 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2076 svq3_decoder_suggest="zlib"
2077 tak_decoder_select="audiodsp"
2078 tdsc_decoder_deps="zlib"
2079 tdsc_decoder_select="mjpeg_decoder"
2080 theora_decoder_select="vp3_decoder"
2081 thp_decoder_select="mjpeg_decoder"
2082 tiff_decoder_suggest="zlib"
2083 tiff_encoder_suggest="zlib"
2084 truehd_decoder_select="mlp_decoder"
2085 truemotion2_decoder_select="bswapdsp"
2086 truespeech_decoder_select="bswapdsp"
2087 tscc_decoder_deps="zlib"
2088 txd_decoder_select="texturedsp"
2089 twinvq_decoder_select="mdct lsp sinewin"
2090 utvideo_decoder_select="bswapdsp"
2091 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2092 vble_decoder_select="huffyuvdsp"
2093 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2094 vc1image_decoder_select="vc1_decoder"
2095 vorbis_decoder_select="mdct"
2096 vorbis_encoder_select="mdct"
2097 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2098 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2099 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2100 vp6a_decoder_select="vp6_decoder"
2101 vp6f_decoder_select="vp6_decoder"
2102 vp7_decoder_select="h264pred videodsp vp8dsp"
2103 vp8_decoder_select="h264pred videodsp vp8dsp"
2104 vp9_decoder_select="videodsp"
2105 webp_decoder_select="vp8_decoder"
2106 wmapro_decoder_select="mdct sinewin wma_freqs"
2107 wmav1_decoder_select="mdct sinewin wma_freqs"
2108 wmav1_encoder_select="mdct sinewin wma_freqs"
2109 wmav2_decoder_select="mdct sinewin wma_freqs"
2110 wmav2_encoder_select="mdct sinewin wma_freqs"
2111 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2112 wmv1_decoder_select="h263_decoder"
2113 wmv1_encoder_select="h263_encoder"
2114 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2115 wmv2_encoder_select="h263_encoder wmv2dsp"
2116 wmv3_decoder_select="vc1_decoder"
2117 wmv3image_decoder_select="wmv3_decoder"
2118 zerocodec_decoder_deps="zlib"
2119 zlib_decoder_deps="zlib"
2120 zlib_encoder_deps="zlib"
2121 zmbv_decoder_deps="zlib"
2122 zmbv_encoder_deps="zlib"
2123
2124 # hardware accelerators
2125 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2126 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2127 vaapi_deps="va_va_h"
2128 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2129 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2130 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2131
2132 h263_vaapi_hwaccel_deps="vaapi"
2133 h263_vaapi_hwaccel_select="h263_decoder"
2134 h264_d3d11va_hwaccel_deps="d3d11va"
2135 h264_d3d11va_hwaccel_select="h264_decoder"
2136 h264_dxva2_hwaccel_deps="dxva2"
2137 h264_dxva2_hwaccel_select="h264_decoder"
2138 h264_mmal_decoder_deps="mmal"
2139 h264_mmal_decoder_select="mmal"
2140 h264_mmal_hwaccel_deps="mmal"
2141 h264_omx_encoder_deps="omx"
2142 h264_qsv_hwaccel_deps="libmfx"
2143 h264_vaapi_hwaccel_deps="vaapi"
2144 h264_vaapi_hwaccel_select="h264_decoder"
2145 h264_vda_hwaccel_deps="vda"
2146 h264_vda_hwaccel_select="h264_decoder"
2147 h264_vda_old_hwaccel_deps="vda"
2148 h264_vda_old_hwaccel_select="h264_decoder"
2149 h264_vdpau_hwaccel_deps="vdpau"
2150 h264_vdpau_hwaccel_select="h264_decoder"
2151 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2152 hevc_d3d11va_hwaccel_select="hevc_decoder"
2153 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2154 hevc_dxva2_hwaccel_select="hevc_decoder"
2155 hevc_qsv_hwaccel_deps="libmfx"
2156 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2157 hevc_vdpau_hwaccel_select="hevc_decoder"
2158 mpeg1_vdpau_hwaccel_deps="vdpau"
2159 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2160 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2161 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2162 mpeg2_dxva2_hwaccel_deps="dxva2"
2163 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2164 mpeg2_mmal_decoder_deps="mmal"
2165 mpeg2_mmal_decoder_select="mmal"
2166 mpeg2_mmal_hwaccel_deps="mmal"
2167 mpeg2_qsv_hwaccel_deps="libmfx"
2168 mpeg2_vaapi_hwaccel_deps="vaapi"
2169 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2170 mpeg2_vdpau_hwaccel_deps="vdpau"
2171 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2172 mpeg4_omx_encoder_deps="omx"
2173 mpeg4_vaapi_hwaccel_deps="vaapi"
2174 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2175 mpeg4_vdpau_hwaccel_deps="vdpau"
2176 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2177 vc1_d3d11va_hwaccel_deps="d3d11va"
2178 vc1_d3d11va_hwaccel_select="vc1_decoder"
2179 vc1_dxva2_hwaccel_deps="dxva2"
2180 vc1_dxva2_hwaccel_select="vc1_decoder"
2181 vc1_mmal_decoder_deps="mmal"
2182 vc1_mmal_decoder_select="mmal"
2183 vc1_mmal_hwaccel_deps="mmal"
2184 vc1_vaapi_hwaccel_deps="vaapi"
2185 vc1_vaapi_hwaccel_select="vc1_decoder"
2186 vc1_vdpau_hwaccel_deps="vdpau"
2187 vc1_vdpau_hwaccel_select="vc1_decoder"
2188 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2189 vp8_vaapi_hwaccel_select="vp8_decoder"
2190 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2191 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2192 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2193 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2194
2195 # hardware-accelerated codecs
2196 nvenc_deps_any="dlopen LoadLibrary"
2197 nvenc_extralibs='$ldl'
2198 omx_deps="dlopen pthreads"
2199 omx_extralibs='$ldl'
2200 qsvdec_select="qsv"
2201 qsvenc_select="qsv"
2202 vaapi_encode_deps="vaapi"
2203
2204 hwupload_cuda_filter_deps="cuda"
2205 scale_npp_filter_deps="cuda libnpp"
2206
2207 h264_nvenc_encoder_deps="nvenc"
2208 h264_qsv_decoder_deps="libmfx"
2209 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2210 h264_qsv_encoder_deps="libmfx"
2211 h264_qsv_encoder_select="qsvenc"
2212 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2213 h264_vaapi_encoder_select="vaapi_encode golomb"
2214
2215 hevc_nvenc_encoder_deps="nvenc"
2216 hevc_qsv_decoder_deps="libmfx"
2217 hevc_qsv_encoder_deps="libmfx"
2218 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2219 hevc_qsv_encoder_select="qsvenc"
2220 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2221 hevc_vaapi_encoder_select="vaapi_encode golomb"
2222 mpeg2_qsv_decoder_deps="libmfx"
2223 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2224 mpeg2_qsv_encoder_deps="libmfx"
2225 mpeg2_qsv_encoder_select="qsvenc"
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 mpegvideo_parser_select="mpegvideo"
2234 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2235 vc1_parser_select="vc1dsp"
2236
2237 # bitstream_filters
2238 mjpeg2jpeg_bsf_select="jpegtables"
2239
2240 # external libraries
2241 libdcadec_decoder_deps="libdcadec"
2242 libfaac_encoder_deps="libfaac"
2243 libfaac_encoder_select="audio_frame_queue"
2244 libfdk_aac_decoder_deps="libfdk_aac"
2245 libfdk_aac_encoder_deps="libfdk_aac"
2246 libfdk_aac_encoder_select="audio_frame_queue"
2247 libgsm_decoder_deps="libgsm"
2248 libgsm_encoder_deps="libgsm"
2249 libgsm_ms_decoder_deps="libgsm"
2250 libgsm_ms_encoder_deps="libgsm"
2251 libilbc_decoder_deps="libilbc"
2252 libilbc_encoder_deps="libilbc"
2253 libkvazaar_encoder_deps="libkvazaar"
2254 libmp3lame_encoder_deps="libmp3lame"
2255 libmp3lame_encoder_select="audio_frame_queue"
2256 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2257 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2258 libopencore_amrnb_encoder_select="audio_frame_queue"
2259 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2260 libopenh264_decoder_deps="libopenh264"
2261 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2262 libopenh264_encoder_deps="libopenh264"
2263 libopenjpeg_decoder_deps="libopenjpeg"
2264 libopenjpeg_encoder_deps="libopenjpeg"
2265 libopus_decoder_deps="libopus"
2266 libopus_encoder_deps="libopus"
2267 libopus_encoder_select="audio_frame_queue"
2268 libschroedinger_decoder_deps="libschroedinger"
2269 libschroedinger_encoder_deps="libschroedinger"
2270 libspeex_decoder_deps="libspeex"
2271 libspeex_encoder_deps="libspeex"
2272 libspeex_encoder_select="audio_frame_queue"
2273 libtheora_encoder_deps="libtheora"
2274 libtwolame_encoder_deps="libtwolame"
2275 libvo_aacenc_encoder_deps="libvo_aacenc"
2276 libvo_aacenc_encoder_select="audio_frame_queue"
2277 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2278 libvorbis_encoder_deps="libvorbis"
2279 libvorbis_encoder_select="audio_frame_queue"
2280 libvpx_vp8_decoder_deps="libvpx"
2281 libvpx_vp8_encoder_deps="libvpx"
2282 libvpx_vp9_decoder_deps="libvpx"
2283 libvpx_vp9_encoder_deps="libvpx"
2284 libwavpack_encoder_deps="libwavpack"
2285 libwebp_encoder_deps="libwebp"
2286 libx262_encoder_deps="libx262"
2287 libx264_encoder_deps="libx264"
2288 libx265_encoder_deps="libx265"
2289 libxavs_encoder_deps="libxavs"
2290 libxvid_encoder_deps="libxvid"
2291
2292 # demuxers / muxers
2293 ac3_demuxer_select="ac3_parser"
2294 asf_demuxer_select="riffdec"
2295 asf_muxer_select="riffenc"
2296 asf_stream_muxer_select="asf_muxer"
2297 avi_demuxer_select="iso_media riffdec"
2298 avi_muxer_select="riffenc"
2299 avisynth_demuxer_deps="avisynth"
2300 avisynth_demuxer_select="riffdec"
2301 caf_demuxer_select="iso_media riffdec"
2302 dash_muxer_select="mp4_muxer"
2303 dirac_demuxer_select="dirac_parser"
2304 dv_demuxer_select="dvprofile"
2305 dv_muxer_select="dvprofile"
2306 dxa_demuxer_select="riffdec"
2307 eac3_demuxer_select="ac3_parser"
2308 f4v_muxer_select="mov_muxer"
2309 flac_demuxer_select="flac_parser"
2310 hds_muxer_select="flv_muxer"
2311 hls_muxer_select="mpegts_muxer"
2312 ipod_muxer_select="mov_muxer"
2313 ismv_muxer_select="mov_muxer"
2314 matroska_audio_muxer_select="matroska_muxer"
2315 matroska_demuxer_select="iso_media riffdec"
2316 matroska_demuxer_suggest="bzlib lzo zlib"
2317 matroska_muxer_select="iso_media riffenc"
2318 mmf_muxer_select="riffenc"
2319 mov_demuxer_select="iso_media riffdec"
2320 mov_demuxer_suggest="zlib"
2321 mov_muxer_select="iso_media riffenc rtpenc_chain"
2322 mp3_demuxer_select="mpegaudio_parser"
2323 mp4_muxer_select="mov_muxer"
2324 mpegts_demuxer_select="iso_media"
2325 mpegts_muxer_select="adts_muxer latm_muxer"
2326 mpegtsraw_demuxer_select="mpegts_demuxer"
2327 mxf_d10_muxer_select="mxf_muxer"
2328 nut_muxer_select="riffenc"
2329 nuv_demuxer_select="riffdec"
2330 oga_muxer_select="ogg_muxer"
2331 ogg_demuxer_select="dirac_parse"
2332 opus_muxer_select="ogg_muxer"
2333 psp_muxer_select="mov_muxer"
2334 rtp_demuxer_select="sdp_demuxer"
2335 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2336 rtsp_demuxer_select="http_protocol rtpdec"
2337 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2338 sap_demuxer_select="sdp_demuxer"
2339 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2340 sdp_demuxer_select="rtpdec"
2341 smoothstreaming_muxer_select="ismv_muxer"
2342 spdif_muxer_select="aac_parser"
2343 spx_muxer_select="ogg_muxer"
2344 swf_demuxer_suggest="zlib"
2345 tak_demuxer_select="tak_parser"
2346 tg2_muxer_select="mov_muxer"
2347 tgp_muxer_select="mov_muxer"
2348 w64_demuxer_select="wav_demuxer"
2349 wav_demuxer_select="riffdec"
2350 wav_muxer_select="riffenc"
2351 webm_muxer_select="iso_media riffenc"
2352 webm_muxer_suggest="libopus_encoder libvorbis_encoder libvpx_vp8_encoder libvpx_vp9_encoder"
2353 wtv_demuxer_select="mpegts_demuxer riffdec"
2354 xmv_demuxer_select="riffdec"
2355 xwma_demuxer_select="riffdec"
2356
2357 # indevs / outdevs
2358 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2359 alsa_outdev_deps="alsa_asoundlib_h"
2360 avfoundation_indev_deps="AVFoundation_AVFoundation_h"
2361 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2362 dv1394_indev_deps="dv1394"
2363 dv1394_indev_select="dv_demuxer"
2364 fbdev_indev_deps="linux_fb_h"
2365 jack_indev_deps="jack_jack_h"
2366 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2367 libcdio_indev_deps="libcdio"
2368 libdc1394_indev_deps="libdc1394"
2369 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2370 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2371 pulse_indev_deps="libpulse"
2372 sndio_indev_deps="sndio_h"
2373 sndio_outdev_deps="sndio_h"
2374 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2375 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2376 vfwcap_indev_extralibs="-lavicap32"
2377 xcbgrab_indev_deps="libxcb"
2378
2379 # protocols
2380 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2381 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2382 ffrtmpcrypt_protocol_select="tcp_protocol"
2383 ffrtmphttp_protocol_deps="!librtmp_protocol"
2384 ffrtmphttp_protocol_select="http_protocol"
2385 gopher_protocol_select="network"
2386 http_protocol_select="tcp_protocol"
2387 httpproxy_protocol_select="tcp_protocol"
2388 https_protocol_select="tls_protocol"
2389 icecast_protocol_select="http_protocol"
2390 librtmp_protocol_deps="librtmp"
2391 librtmpe_protocol_deps="librtmp"
2392 librtmps_protocol_deps="librtmp"
2393 librtmpt_protocol_deps="librtmp"
2394 librtmpte_protocol_deps="librtmp"
2395 mmsh_protocol_select="http_protocol"
2396 mmst_protocol_select="network"
2397 rtmp_protocol_deps="!librtmp_protocol"
2398 rtmp_protocol_select="tcp_protocol"
2399 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2400 rtmps_protocol_deps="!librtmp_protocol"
2401 rtmps_protocol_select="tls_protocol"
2402 rtmpt_protocol_select="ffrtmphttp_protocol"
2403 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2404 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2405 rtp_protocol_select="udp_protocol"
2406 sctp_protocol_deps="struct_sctp_event_subscribe"
2407 sctp_protocol_select="network"
2408 srtp_protocol_select="rtp_protocol srtp"
2409 tcp_protocol_select="network"
2410 tls_gnutls_protocol_deps="gnutls"
2411 tls_gnutls_protocol_select="tcp_protocol"
2412 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2413 tls_openssl_protocol_select="tcp_protocol"
2414 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2415 udp_protocol_select="network"
2416 unix_protocol_deps="sys_un_h"
2417 unix_protocol_select="network"
2418
2419 # filters
2420 blackframe_filter_deps="gpl"
2421 boxblur_filter_deps="gpl"
2422 bs2b_filter_deps="libbs2b"
2423 cropdetect_filter_deps="gpl"
2424 deinterlace_qsv_filter_deps="libmfx"
2425 delogo_filter_deps="gpl"
2426 drawtext_filter_deps="libfreetype"
2427 frei0r_filter_deps="frei0r dlopen"
2428 frei0r_filter_extralibs='$ldl'
2429 frei0r_src_filter_deps="frei0r dlopen"
2430 frei0r_src_filter_extralibs='$ldl'
2431 hdcd_filter_deps="libhdcd"
2432 hqdn3d_filter_deps="gpl"
2433 interlace_filter_deps="gpl"
2434 ocv_filter_deps="libopencv"
2435 resample_filter_deps="avresample"
2436 scale_filter_deps="swscale"
2437 scale_qsv_filter_deps="libmfx"
2438 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2439
2440 # examples
2441 avcodec_example_deps="avcodec avutil"
2442 filter_audio_example_deps="avfilter avutil"
2443 metadata_example_deps="avformat avutil"
2444 output_example_deps="avcodec avformat avutil swscale"
2445 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2446 transcode_aac_example_deps="avcodec avformat avresample"
2447
2448 # libraries, in linking order
2449 avcodec_deps="avutil"
2450 avdevice_deps="avformat avcodec avutil"
2451 avfilter_deps="avutil"
2452 avformat_deps="avcodec avutil"
2453 avresample_deps="avutil"
2454 swscale_deps="avutil"
2455
2456 # programs
2457 avconv_deps="avcodec avfilter avformat avresample swscale"
2458 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2459                fps_filter null_filter resample_filter scale_filter
2460                trim_filter"
2461 avplay_deps="avcodec avfilter avformat avresample sdl"
2462 avplay_libs='$sdl_libs'
2463 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2464 avprobe_deps="avcodec avformat"
2465
2466 # documentation
2467 pod2man_deps="doc"
2468 texi2html_deps="doc"
2469
2470 # default parameters
2471
2472 logfile="config.log"
2473
2474 # installation paths
2475 prefix_default="/usr/local"
2476 bindir_default='${prefix}/bin'
2477 datadir_default='${prefix}/share/avconv'
2478 docdir_default='${prefix}/share/doc/libav'
2479 incdir_default='${prefix}/include'
2480 libdir_default='${prefix}/lib'
2481 mandir_default='${prefix}/share/man'
2482 shlibdir_default="$libdir_default"
2483
2484 # toolchain
2485 ar_default="ar"
2486 cc_default="gcc"
2487 host_cc_default="gcc"
2488 cp_f="cp -f"
2489 ln_s="ln -s -f"
2490 nm_default="nm -g"
2491 objformat="elf"
2492 pkg_config_default=pkg-config
2493 ranlib="ranlib"
2494 strip="strip"
2495 version_script='--version-script'
2496 yasmexe="yasm"
2497
2498 # machine
2499 arch_default=$(uname -m)
2500 cpu="generic"
2501 intrinsics="none"
2502
2503 # OS
2504 target_os_default=$(tolower $(uname -s))
2505 host_os=$target_os_default
2506
2507 # configurable options
2508 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2509
2510 enable asm
2511 enable debug
2512 enable doc
2513 enable faan faandct faanidct
2514 enable optimizations
2515 enable safe_bitstream_reader
2516 enable static
2517 enable swscale_alpha
2518 enable valgrind_backtrace
2519
2520 # By default, enable only those hwaccels that have no external dependencies.
2521 enable d3d11va dxva2 vda vdpau
2522
2523 # build settings
2524 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2525 LIBPREF="lib"
2526 LIBSUF=".a"
2527 FULLNAME='$(NAME)$(BUILDSUF)'
2528 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2529 SLIBPREF="lib"
2530 SLIBSUF=".so"
2531 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2532 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2533 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2534 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2535 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2536 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2537 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2538
2539 asflags_filter=echo
2540 cflags_filter=echo
2541 ldflags_filter=echo
2542
2543 AS_C='-c'
2544 AS_O='-o $@'
2545 CC_C='-c'
2546 CC_E='-E -o $@'
2547 CC_O='-o $@'
2548 OBJCC_C='-c'
2549 OBJCC_E='-E -o $@'
2550 OBJCC_O='-o $@'
2551 LD_O='-o $@'
2552 LD_LIB='-l%'
2553 LD_PATH='-L'
2554 HOSTCC_C='-c'
2555 HOSTCC_E='-E -o $@'
2556 HOSTCC_O='-o $@'
2557 HOSTLD_O='-o $@'
2558
2559 host_libs='-lm'
2560 host_cflags_filter=echo
2561 host_ldflags_filter=echo
2562
2563 target_path='$(CURDIR)'
2564
2565 # since the object filename is not given with the -MM flag, the compiler
2566 # is only able to print the basename, and we must add the path ourselves
2567 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2568 DEPFLAGS='-MM'
2569
2570 # find source path
2571 if test -f configure; then
2572     source_path=.
2573 else
2574     source_path=$(cd $(dirname "$0"); pwd)
2575     echo "$source_path" | grep -q '[[:blank:]]' &&
2576         die "Out of tree builds are impossible with whitespace in source path."
2577     test -e "$source_path/config.h" &&
2578         die "Out of tree builds are impossible with config.h in source dir."
2579 fi
2580
2581 for v in "$@"; do
2582     r=${v#*=}
2583     l=${v%"$r"}
2584     r=$(sh_quote "$r")
2585     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2586 done
2587
2588 find_things(){
2589     thing=$1
2590     pattern=$2
2591     file=$source_path/$3
2592     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2593 }
2594
2595 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2596 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2597 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2598 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2599 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2600 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2601 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2602 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2603 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2604
2605 find_things_extern(){
2606     thing=$1
2607     pattern=$2
2608     file=$source_path/$3
2609     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2610 }
2611
2612 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2613 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2614
2615 ALL_COMPONENTS="
2616     $BSF_LIST
2617     $DECODER_LIST
2618     $DEMUXER_LIST
2619     $ENCODER_LIST
2620     $FILTER_LIST
2621     $HWACCEL_LIST
2622     $INDEV_LIST
2623     $MUXER_LIST
2624     $OUTDEV_LIST
2625     $PARSER_LIST
2626     $PROTOCOL_LIST
2627 "
2628
2629 for n in $COMPONENT_LIST; do
2630     v=$(toupper ${n%s})_LIST
2631     eval enable \$$v
2632     eval ${n}_if_any="\$$v"
2633 done
2634
2635 enable $ARCH_EXT_LIST
2636
2637 die_unknown(){
2638     echo "Unknown option \"$1\"."
2639     echo "See $0 --help for available options."
2640     exit 1
2641 }
2642
2643 print_3_columns() {
2644     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2645 }
2646
2647 show_list() {
2648     suffix=_$1
2649     shift
2650     echo $* | sed s/$suffix//g | print_3_columns
2651     exit 0
2652 }
2653
2654 rand_list(){
2655     IFS=', '
2656     set -- $*
2657     unset IFS
2658     for thing; do
2659         comp=${thing%:*}
2660         prob=${thing#$comp}
2661         prob=${prob#:}
2662         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2663         echo "prob ${prob:-0.5}"
2664         printf '%s\n' $comp
2665     done
2666 }
2667
2668 do_random(){
2669     action=$1
2670     shift
2671     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2672     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2673 }
2674
2675 for opt do
2676     optval="${opt#*=}"
2677     case "$opt" in
2678         --extra-ldflags=*)
2679             add_ldflags $optval
2680         ;;
2681         --extra-ldexeflags=*)
2682             add_ldexeflags $optval
2683         ;;
2684         --extra-libs=*)
2685             add_extralibs $optval
2686         ;;
2687         --disable-devices)
2688             disable $INDEV_LIST $OUTDEV_LIST
2689         ;;
2690         --enable-debug=*)
2691             debuglevel="$optval"
2692         ;;
2693         --disable-programs)
2694             disable $PROGRAM_LIST
2695         ;;
2696         --disable-everything)
2697             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2698         ;;
2699         --disable-all)
2700             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2701             disable $LIBRARY_LIST $PROGRAM_LIST doc
2702         ;;
2703         --enable-random|--disable-random)
2704             action=${opt%%-random}
2705             do_random ${action#--} $COMPONENT_LIST
2706         ;;
2707         --enable-random=*|--disable-random=*)
2708             action=${opt%%-random=*}
2709             do_random ${action#--} $optval
2710         ;;
2711         --enable-*=*|--disable-*=*)
2712             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2713             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2714             eval list=\$$(toupper $thing)_LIST
2715             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2716             $action $(filter "$name" $list)
2717         ;;
2718         --enable-avserver|--disable-avserver*)
2719             warn "avserver has been removed, the ${opt} option is only"\
2720                  "provided for compatibility and will be removed in the future"
2721         ;;
2722         --enable-?*|--disable-?*)
2723             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2724             if is_in $option $COMPONENT_LIST; then
2725                 test $action = disable && action=unset
2726                 eval $action \$$(toupper ${option%s})_LIST
2727             elif is_in $option $CMDLINE_SELECT; then
2728                 $action $option
2729             else
2730                 die_unknown $opt
2731             fi
2732         ;;
2733         --list-*)
2734             NAME="${opt#--list-}"
2735             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2736             NAME=${NAME%s}
2737             eval show_list $NAME \$$(toupper $NAME)_LIST
2738         ;;
2739         --help|-h) show_help
2740         ;;
2741         *)
2742             optname="${opt%%=*}"
2743             optname="${optname#--}"
2744             optname=$(echo "$optname" | sed 's/-/_/g')
2745             if is_in $optname $CMDLINE_SET; then
2746                 eval $optname='$optval'
2747             elif is_in $optname $CMDLINE_APPEND; then
2748                 append $optname "$optval"
2749             else
2750                 die_unknown $opt
2751             fi
2752         ;;
2753     esac
2754 done
2755
2756 for e in $env; do
2757     eval "export $e"
2758 done
2759
2760 disabled logging && logfile=/dev/null
2761
2762 # Disable all the library-specific components if the library itself
2763 # is disabled, see AVCODEC_LIST and following _LIST variables.
2764
2765 disable_components(){
2766     disabled ${1} && disable $(
2767         eval components="\$$(toupper ${1})_COMPONENTS"
2768         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2769     )
2770 }
2771
2772 map 'disable_components $v' $LIBRARY_LIST
2773
2774 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2775 set >> $logfile
2776
2777 case "$toolchain" in
2778     *-asan)
2779         cc_default="${toolchain%-asan}"
2780         add_cflags  -fsanitize=address
2781         add_ldflags -fsanitize=address
2782     ;;
2783     *-msan)
2784         cc_default="${toolchain%-msan}"
2785         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2786         add_ldflags -fsanitize=memory
2787     ;;
2788     *-tsan)
2789         cc_default="${toolchain%-tsan}"
2790         add_cflags  -fsanitize=thread -pie
2791         add_ldflags -fsanitize=thread -pie
2792         case "$toolchain" in
2793             gcc-tsan)
2794                 add_cflags  -fPIC
2795                 add_ldflags -fPIC
2796                 ;;
2797         esac
2798     ;;
2799     *-usan)
2800         cc_default="${toolchain%-usan}"
2801         add_cflags  -fsanitize=undefined
2802         add_ldflags -fsanitize=undefined
2803         case "$toolchain" in
2804             clang-usan)
2805                 add_cflags -O1
2806                 ;;
2807         esac
2808     ;;
2809     valgrind-*)
2810         target_exec_default="valgrind"
2811         case "$toolchain" in
2812             valgrind-massif)
2813                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2814                 ;;
2815             valgrind-memcheck)
2816                 target_exec_args="--track-origins=yes --leak-check=full"
2817                 ;;
2818         esac
2819     ;;
2820     msvc)
2821         # Check whether the current MSVC version needs the C99 converter.
2822         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2823         # support enough of C99 to build libav. Default to the new
2824         # behaviour if the regexp was unable to match anything, since this
2825         # successfully parses the version number of existing supported
2826         # versions that require the converter (MSVC 2010 and 2012).
2827         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2828         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2829             cc_default="cl"
2830         else
2831             cc_default="c99wrap cl"
2832         fi
2833         ld_default="$source_path/compat/windows/mslink"
2834         nm_default="dumpbin -symbols"
2835         ar_default="lib"
2836         case "$arch" in
2837         arm*)
2838             as_default="armasm"
2839             ;;
2840         esac
2841         target_os_default="win32"
2842         # Use a relative path for TMPDIR. This makes sure all the
2843         # ffconf temp files are written with a relative path, avoiding
2844         # issues with msys/win32 path conversion for MSVC parameters
2845         # such as -Fo<file> or -out:<file>.
2846         TMPDIR=.
2847     ;;
2848     icl)
2849         cc_default="icl"
2850         ld_default="xilink"
2851         nm_default="dumpbin -symbols"
2852         ar_default="xilib"
2853         target_os_default="win32"
2854         TMPDIR=.
2855     ;;
2856     gcov)
2857         add_cflags  -fprofile-arcs -ftest-coverage
2858         add_ldflags -fprofile-arcs -ftest-coverage
2859     ;;
2860     llvm-cov)
2861         add_cflags -fprofile-arcs -ftest-coverage
2862         add_ldflags --coverage
2863     ;;
2864     hardened)
2865         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2866         add_cflags   -fno-strict-overflow -fstack-protector-all
2867         add_ldflags  -Wl,-z,relro -Wl,-z,now
2868     ;;
2869     ?*)
2870         die "Unknown toolchain $toolchain"
2871     ;;
2872 esac
2873
2874 test -n "$cross_prefix" && enable cross_compile
2875
2876 if enabled cross_compile; then
2877     test -n "$arch" && test -n "$target_os" ||
2878         die "Must specify target arch and OS when cross-compiling"
2879 fi
2880
2881 ar_default="${cross_prefix}${ar_default}"
2882 cc_default="${cross_prefix}${cc_default}"
2883 occ_default="${cross_prefix}${occ_default}"
2884 nm_default="${cross_prefix}${nm_default}"
2885 pkg_config_default="${cross_prefix}${pkg_config_default}"
2886 ranlib="${cross_prefix}${ranlib}"
2887 strip="${cross_prefix}${strip}"
2888
2889 sysinclude_default="${sysroot}/usr/include"
2890
2891 set_default arch cc pkg_config sysinclude target_exec target_os
2892 enabled cross_compile || host_cc_default=$cc
2893 set_default host_cc
2894
2895 if ! $pkg_config --version >/dev/null 2>&1; then
2896     warn "$pkg_config not found, library detection may fail."
2897     pkg_config=false
2898 fi
2899
2900 exesuf() {
2901     case $1 in
2902         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2903     esac
2904 }
2905
2906 EXESUF=$(exesuf $target_os)
2907 HOSTEXESUF=$(exesuf $host_os)
2908
2909 # set temporary file name
2910 : ${TMPDIR:=$TEMPDIR}
2911 : ${TMPDIR:=$TMP}
2912 : ${TMPDIR:=/tmp}
2913
2914 if ! check_cmd mktemp -u XXXXXX; then
2915     # simple replacement for missing mktemp
2916     # NOT SAFE FOR GENERAL USE
2917     mktemp(){
2918         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2919     }
2920 fi
2921
2922 tmpfile(){
2923     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2924         (set -C; exec > $tmp) 2>/dev/null ||
2925         die "Unable to create temporary file in $TMPDIR."
2926     append TMPFILES $tmp
2927     eval $1=$tmp
2928 }
2929
2930 trap 'rm -f -- $TMPFILES' EXIT
2931
2932 tmpfile TMPASM .asm
2933 tmpfile TMPC   .c
2934 tmpfile TMPE   $EXESUF
2935 tmpfile TMPH   .h
2936 tmpfile TMPO   .o
2937 tmpfile TMPS   .S
2938 tmpfile TMPSH  .sh
2939 tmpfile TMPV   .ver
2940
2941 unset -f mktemp
2942
2943 chmod +x $TMPE
2944
2945 # make sure we can execute files in $TMPDIR
2946 cat > $TMPSH 2>> $logfile <<EOF
2947 #! /bin/sh
2948 EOF
2949 chmod +x $TMPSH >> $logfile 2>&1
2950 if ! $TMPSH >> $logfile 2>&1; then
2951     cat <<EOF
2952 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2953 variable to another directory and make sure that it is not mounted noexec.
2954 EOF
2955     die "Sanity test failed."
2956 fi
2957
2958 armasm_flags(){
2959     for flag; do
2960         case $flag in
2961             # Filter out MSVC cl.exe options from cflags that shouldn't
2962             # be passed to gas-preprocessor
2963             -M[TD]*)                                            ;;
2964             *)                  echo $flag                      ;;
2965         esac
2966    done
2967 }
2968
2969 ccc_flags(){
2970     for flag; do
2971         case $flag in
2972             -std=c99)           echo -c99                       ;;
2973             -mcpu=*)            echo -arch ${flag#*=}           ;;
2974             -mieee)             echo -ieee                      ;;
2975             -O*|-fast)          echo $flag                      ;;
2976             -fno-math-errno)    echo -assume nomath_errno       ;;
2977             -g)                 echo -g3                        ;;
2978             -Wall)              echo -msg_enable level2         ;;
2979             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2980             -Wl,*)              echo $flag                      ;;
2981             -f*|-W*)                                            ;;
2982             *)                  echo $flag                      ;;
2983         esac
2984    done
2985 }
2986
2987 cparser_flags(){
2988     for flag; do
2989         case $flag in
2990             -Wno-switch)             echo -Wno-switch-enum ;;
2991             -Wno-format-zero-length) ;;
2992             -Wdisabled-optimization) ;;
2993             -Wno-pointer-sign)       echo -Wno-other ;;
2994             *)                       echo $flag ;;
2995         esac
2996     done
2997 }
2998
2999 msvc_common_flags(){
3000     for flag; do
3001         case $flag in
3002             # In addition to specifying certain flags under the compiler
3003             # specific filters, they must be specified here as well or else the
3004             # generic catch all at the bottom will print the original flag.
3005             -Wall)                ;;
3006             -std=c99)             ;;
3007             # Common flags
3008             -fomit-frame-pointer) ;;
3009             -g)                   echo -Z7 ;;
3010             -fno-math-errno)      ;;
3011             -fno-common)          ;;
3012             -fno-signed-zeros)    ;;
3013             -fPIC)                ;;
3014             -mthumb)              ;;
3015             -march=*)             ;;
3016             -lz)                  echo zlib.lib ;;
3017             -lavifil32)           echo vfw32.lib ;;
3018             -lavicap32)           echo vfw32.lib user32.lib ;;
3019             -lx264)               echo libx264.lib ;;
3020             -l*)                  echo ${flag#-l}.lib ;;
3021             -L*)                  echo -libpath:${flag#-L} ;;
3022             *)                    echo $flag ;;
3023         esac
3024     done
3025 }
3026
3027 msvc_flags(){
3028     msvc_common_flags "$@"
3029     for flag; do
3030         case $flag in
3031             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3032                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3033                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3034                                        -wd4273 -wd4554 -wd4701 ;;
3035         esac
3036     done
3037 }
3038
3039 icl_flags(){
3040     msvc_common_flags "$@"
3041     for flag; do
3042         case $flag in
3043             # Despite what Intel's documentation says -Wall, which is supported
3044             # on Windows, does enable remarks so disable them here.
3045             -Wall)                echo $flag -Qdiag-disable:remark ;;
3046             -std=c99)             echo -Qstd=c99 ;;
3047         esac
3048     done
3049 }
3050
3051 pgi_flags(){
3052     for flag; do
3053         case $flag in
3054             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3055             -fomit-frame-pointer) echo -Mnoframe ;;
3056             -g)                   echo -gopt ;;
3057             *)                    echo $flag ;;
3058         esac
3059     done
3060 }
3061
3062 suncc_flags(){
3063     for flag; do
3064         case $flag in
3065             -march=*|-mcpu=*)
3066                 case "${flag#*=}" in
3067                     native)                   echo -xtarget=native       ;;
3068                     v9|niagara)               echo -xarch=sparc          ;;
3069                     ultrasparc)               echo -xarch=sparcvis       ;;
3070                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3071                     i586|pentium)             echo -xchip=pentium        ;;
3072                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3073                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3074                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3075                     pentium4*)          echo -xtarget=pentium4           ;;
3076                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3077                     *-sse3)             echo -xarch=sse3                 ;;
3078                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3079                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3080                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3081                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3082                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3083                     k8|opteron|athlon64|athlon-fx)
3084                                                echo -xarch=sse2a         ;;
3085                     athlon*)                   echo -xarch=pentium_proa  ;;
3086                 esac
3087                 ;;
3088             -std=c99)             echo -xc99              ;;
3089             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3090             -fPIC)                echo -KPIC -xcode=pic32 ;;
3091             -W*,*)                echo $flag              ;;
3092             -f*-*|-W*|-mimpure-text)                      ;;
3093             -shared)              echo -G                 ;;
3094             *)                    echo $flag              ;;
3095         esac
3096     done
3097 }
3098
3099 tms470_flags(){
3100     for flag; do
3101         case $flag in
3102             -march=*|-mcpu=*)
3103                 case "${flag#*=}" in
3104                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3105                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3106                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3107                     armv6*|arm11*)          echo -mv=6   ;;
3108                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3109                                             echo -mv=5e  ;;
3110                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3111                 esac
3112                 ;;
3113             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3114             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3115             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3116             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3117             -msoft-float)   echo --float_support=vfplib       ;;
3118             -O[0-3]|-mf=*)  echo $flag                        ;;
3119             -g)             echo -g -mn                       ;;
3120             -pds=*)         echo $flag                        ;;
3121             -D*|-I*)        echo $flag                        ;;
3122             --gcc|--abi=*)  echo $flag                        ;;
3123             -me)            echo $flag                        ;;
3124         esac
3125     done
3126 }
3127
3128 probe_cc(){
3129     pfx=$1
3130     _cc=$2
3131
3132     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3133     unset _ld_o _ldflags _ld_lib _ld_path
3134     unset _depflags _DEPCMD _DEPFLAGS
3135     _flags_filter=echo
3136
3137     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3138         _type=llvm_gcc
3139         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3140         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3141         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3142         _cflags_speed='-O3'
3143         _cflags_size='-Os'
3144     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3145         _type=gcc
3146         gcc_version=$($_cc --version | head -n1)
3147         gcc_basever=$($_cc -dumpversion)
3148         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3149         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3150         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3151         if ! $_cc -dumpversion | grep -q '^2\.'; then
3152             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3153         fi
3154         _cflags_speed='-O3'
3155         _cflags_size='-Os'
3156     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3157         _type=icc
3158         _ident=$($_cc --version | head -n1)
3159         _depflags='-MMD'
3160         _cflags_speed='-O3'
3161         _cflags_size='-Os'
3162         _cflags_noopt='-O1'
3163     elif $_cc -v 2>&1 | grep -q xlc; then
3164         _type=xlc
3165         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3166         _cflags_speed='-O5'
3167         _cflags_size='-O5 -qcompact'
3168     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3169         _type=ccc
3170         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3171         _DEPFLAGS='-M'
3172         _cflags_speed='-fast'
3173         _cflags_size='-O1'
3174         _flags_filter=ccc_flags
3175     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3176         test -d "$sysroot" || die "No valid sysroot specified."
3177         _type=armcc
3178         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3179         armcc_conf="$PWD/armcc.conf"
3180         $_cc --arm_linux_configure                 \
3181              --arm_linux_config_file="$armcc_conf" \
3182              --configure_sysroot="$sysroot"        \
3183              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3184              die "Error creating armcc configuration file."
3185         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3186         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3187         as_default="${cross_prefix}gcc"
3188         _depflags='-MMD'
3189         _cflags_speed='-O3'
3190         _cflags_size='-Os'
3191     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3192         _type=tms470
3193         _ident=$($_cc -version | head -n1 | tr -s ' ')
3194         _flags='--gcc --abi=eabi -me'
3195         _cc_e='-ppl -fe=$@'
3196         _cc_o='-fe=$@'
3197         _depflags='-ppa -ppd=$(@:.o=.d)'
3198         _cflags_speed='-O3 -mf=5'
3199         _cflags_size='-O3 -mf=2'
3200         _flags_filter=tms470_flags
3201     elif $_cc -v 2>&1 | grep -q clang; then
3202         _type=clang
3203         _ident=$($_cc --version 2>/dev/null | head -n1)
3204         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3205         _cflags_speed='-O3'
3206         _cflags_size='-Os'
3207     elif $_cc -V 2>&1 | grep -q Sun; then
3208         _type=suncc
3209         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3210         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3211         _DEPFLAGS='-xM1 -xc99'
3212         _ldflags='-std=c99'
3213         _cflags_speed='-O5'
3214         _cflags_size='-O5 -xspace'
3215         _flags_filter=suncc_flags
3216     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3217         _type=pathscale
3218         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3219         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3220         _cflags_speed='-O2'
3221         _cflags_size='-Os'
3222         _flags_filter='filter_out -Wdisabled-optimization'
3223     elif $_cc -v 2>&1 | grep -q Open64; then
3224         _type=open64
3225         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3226         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3227         _cflags_speed='-O2'
3228         _cflags_size='-Os'
3229         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3230     elif $_cc -V 2>&1 | grep -q Portland; then
3231         _type=pgi
3232         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3233         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3234         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3235         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3236         _cflags_noopt="-O1"
3237         _flags_filter=pgi_flags
3238     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3239         _type=armasm
3240         _ident=$($_cc | head -n1)
3241         # 4509: "This form of conditional instruction is deprecated"
3242         _flags="-nologo -ignore 4509"
3243         _flags_filter=armasm_flags
3244     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3245         _type=msvc
3246         _ident=$($_cc 2>&1 | head -n1)
3247         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3248         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3249         _cflags_speed="-O2"
3250         _cflags_size="-O1"
3251         if $_cc -nologo- 2>&1 | grep -q Linker; then
3252             _ld_o='-out:$@'
3253         else
3254             _ld_o='-Fe$@'
3255         fi
3256         _cc_o='-Fo$@'
3257         _cc_e='-P -Fi$@'
3258         _flags_filter=msvc_flags
3259         _ld_lib='lib%.a'
3260         _ld_path='-libpath:'
3261         _flags='-nologo'
3262     elif $_cc 2>&1 | grep -q Intel; then
3263         _type=icl
3264         _ident=$($_cc 2>&1 | head -n1)
3265         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3266         # Not only is O3 broken on 13.x+ but it is slower on all previous
3267         # versions (tested) as well.
3268         _cflags_speed="-O2"
3269         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3270         if $_cc 2>&1 | grep -q Linker; then
3271             _ld_o='-out:$@'
3272         else
3273             _ld_o='-Fe$@'
3274         fi
3275         _cc_o='-Fo$@'
3276         _cc_e='-P'
3277         _flags_filter=icl_flags
3278         _ld_lib='lib%.a'
3279         _ld_path='-libpath:'
3280         # -Qdiag-error to make icl error when seeing certain unknown arguments
3281         _flags='-nologo -Qdiag-error:4044,10157'
3282         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3283         # with MSVC which enables it by default.
3284         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3285     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3286         # lld can emulate multiple different linkers; in ms link.exe mode,
3287         # the -? parameter gives the help output which contains an identifyable
3288         # string, while it gives an error in other modes.
3289         _type=lld-link
3290         # The link.exe mode doesn't have a switch for getting the version,
3291         # but we can force it back to gnu mode and get the version from there.
3292         _ident=$($_cc -flavor gnu --version)
3293         _ld_o='-out:$@'
3294         _flags_filter=msvc_flags
3295         _ld_lib='lib%.a'
3296         _ld_path='-libpath:'
3297     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3298         _type=cparser
3299         _ident=$($_cc --version | head -n1)
3300         _depflags='-MMD'
3301         _cflags_speed='-O4'
3302         _cflags_size='-O2'
3303         _flags_filter=cparser_flags
3304     fi
3305
3306     eval ${pfx}_type=\$_type
3307     eval ${pfx}_ident=\$_ident
3308 }
3309
3310 set_ccvars(){
3311     eval ${1}_C=\${_cc_c-\${${1}_C}}
3312     eval ${1}_E=\${_cc_e-\${${1}_E}}
3313     eval ${1}_O=\${_cc_o-\${${1}_O}}
3314
3315     if [ -n "$_depflags" ]; then
3316         eval ${1}_DEPFLAGS=\$_depflags
3317     else
3318         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3319         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3320         eval DEP${1}FLAGS=\$_flags
3321     fi
3322 }
3323
3324 probe_cc cc "$cc"
3325 cflags_filter=$_flags_filter
3326 cflags_speed=$_cflags_speed
3327 cflags_size=$_cflags_size
3328 cflags_noopt=$_cflags_noopt
3329 add_cflags $_flags $_cflags
3330 cc_ldflags=$_ldflags
3331 set_ccvars CC
3332
3333 probe_cc hostcc "$host_cc"
3334 host_cflags_filter=$_flags_filter
3335 add_host_cflags  $_flags $_cflags
3336 set_ccvars HOSTCC
3337
3338 test -n "$cc_type" && enable $cc_type ||
3339     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3340
3341 : ${as_default:=$cc}
3342 : ${objcc_default:=$cc}
3343 : ${dep_cc_default:=$cc}
3344 : ${ld_default:=$cc}
3345 : ${host_ld_default:=$host_cc}
3346 set_default ar as objcc dep_cc ld host_ld
3347
3348 probe_cc as "$as"
3349 asflags_filter=$_flags_filter
3350 add_asflags $_flags $_cflags
3351 set_ccvars AS
3352
3353 probe_cc objcc "$objcc"
3354 objcflags_filter=$_flags_filter
3355 add_objcflags $_flags $_cflags
3356 set_ccvars OBJC
3357
3358 probe_cc ld "$ld"
3359 ldflags_filter=$_flags_filter
3360 add_ldflags $_flags $_ldflags
3361 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3362 LD_O=${_ld_o-$LD_O}
3363 LD_LIB=${_ld_lib-$LD_LIB}
3364 LD_PATH=${_ld_path-$LD_PATH}
3365
3366 probe_cc hostld "$host_ld"
3367 host_ldflags_filter=$_flags_filter
3368 add_host_ldflags $_flags $_ldflags
3369 HOSTLD_O=${_ld_o-$HOSTLD_O}
3370
3371 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3372     probe_cc depcc "$dep_cc"
3373     CCDEP=${_DEPCMD:-$DEPCMD}
3374     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3375     DEPCCFLAGS=$_flags
3376 fi
3377
3378 if $ar 2>&1 | grep -q Microsoft; then
3379     arflags="-nologo"
3380     ar_o='-out:$@'
3381 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3382     arflags="rq"
3383     ar_o='$@'
3384 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3385     arflags='-Xany -r -c'
3386     ar_o='$@'
3387 else
3388     arflags="rc"
3389     ar_o='$@'
3390 fi
3391
3392 add_cflags $extra_cflags
3393 add_objcflags $extra_objcflags
3394 add_asflags $extra_cflags
3395
3396 if test -n "$sysroot"; then
3397     case "$cc_type" in
3398         gcc|llvm_gcc|clang)
3399             add_cppflags --sysroot="$sysroot"
3400             add_ldflags --sysroot="$sysroot"
3401         ;;
3402         tms470)
3403             add_cppflags -I"$sysinclude"
3404             add_ldflags  --sysroot="$sysroot"
3405         ;;
3406     esac
3407 fi
3408
3409 if test "$cpu" = host; then
3410     enabled cross_compile &&
3411         die "--cpu=host makes no sense when cross-compiling."
3412
3413     case "$cc_type" in
3414         gcc|llvm_gcc)
3415             check_native(){
3416                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3417                 sed -n "/cc1.*$1=/{
3418                             s/.*$1=\\([^ ]*\\).*/\\1/
3419                             p
3420                             q
3421                         }" $TMPE
3422             }
3423             cpu=$(check_native -march || check_native -mcpu)
3424         ;;
3425     esac
3426
3427     test "${cpu:-host}" = host &&
3428         die "--cpu=host not supported with compiler $cc"
3429 fi
3430
3431 # Deal with common $arch aliases
3432 case "$arch" in
3433     aarch64|arm64)
3434         arch="aarch64"
3435     ;;
3436     arm*)
3437         arch="arm"
3438     ;;
3439     mips*|IP*)
3440         case "$arch" in
3441         *el)
3442             add_cppflags -EL
3443             add_ldflags -EL
3444         ;;
3445         *eb)
3446             add_cppflags -EB
3447             add_ldflags -EB
3448         ;;
3449         esac
3450         arch="mips"
3451     ;;
3452     parisc*|hppa*)
3453         arch="parisc"
3454     ;;
3455     "Power Macintosh"|ppc*|powerpc*)
3456         arch="ppc"
3457     ;;
3458     s390|s390x)
3459         arch="s390"
3460     ;;
3461     sh4|sh)
3462         arch="sh4"
3463     ;;
3464     sun4u|sparc*)
3465         arch="sparc"
3466     ;;
3467     tilegx|tile-gx)
3468         arch="tilegx"
3469     ;;
3470     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3471         arch="x86"
3472     ;;
3473 esac
3474
3475 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3476 enable $arch
3477
3478 # Add processor-specific flags
3479 if enabled aarch64; then
3480
3481     case $cpu in
3482         armv*)
3483             cpuflags="-march=$cpu"
3484         ;;
3485         *)
3486             cpuflags="-mcpu=$cpu"
3487         ;;
3488     esac
3489
3490 elif enabled alpha; then
3491
3492     cpuflags="-mcpu=$cpu"
3493
3494 elif enabled arm; then
3495
3496     check_arm_arch() {
3497         check_cpp_condition stddef.h \
3498             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3499             $cpuflags
3500     }
3501
3502     probe_arm_arch() {
3503         if   check_arm_arch 4;        then echo armv4
3504         elif check_arm_arch 4T;       then echo armv4t
3505         elif check_arm_arch 5;        then echo armv5
3506         elif check_arm_arch 5E;       then echo armv5e
3507         elif check_arm_arch 5T;       then echo armv5t
3508         elif check_arm_arch 5TE;      then echo armv5te
3509         elif check_arm_arch 5TEJ;     then echo armv5te
3510         elif check_arm_arch 6;        then echo armv6
3511         elif check_arm_arch 6J;       then echo armv6j
3512         elif check_arm_arch 6K;       then echo armv6k
3513         elif check_arm_arch 6Z;       then echo armv6z
3514         elif check_arm_arch 6ZK;      then echo armv6zk
3515         elif check_arm_arch 6T2;      then echo armv6t2
3516         elif check_arm_arch 7;        then echo armv7
3517         elif check_arm_arch 7A  7_A;  then echo armv7-a
3518         elif check_arm_arch 7S;       then echo armv7-a
3519         elif check_arm_arch 7R  7_R;  then echo armv7-r
3520         elif check_arm_arch 7M  7_M;  then echo armv7-m
3521         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3522         elif check_arm_arch 8A  8_A;  then echo armv8-a
3523         fi
3524     }
3525
3526     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3527
3528     case $cpu in
3529         armv*)
3530             cpuflags="-march=$cpu"
3531             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3532         ;;
3533         *)
3534             cpuflags="-mcpu=$cpu"
3535             case $cpu in
3536                 cortex-a*)                               subarch=armv7a  ;;
3537                 cortex-r*)                               subarch=armv7r  ;;
3538                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3539                 arm11*)                                  subarch=armv6   ;;
3540                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3541                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3542                 *)                             subarch=$(probe_arm_arch) ;;
3543             esac
3544         ;;
3545     esac
3546
3547     case "$subarch" in
3548         armv5t*)    enable fast_clz                ;;
3549         armv[6-8]*) enable fast_clz fast_unaligned ;;
3550     esac
3551
3552 elif enabled avr32; then
3553
3554     case $cpu in
3555         ap7[02]0[0-2])
3556             subarch="avr32_ap"
3557             cpuflags="-mpart=$cpu"
3558         ;;
3559         ap)
3560             subarch="avr32_ap"
3561             cpuflags="-march=$cpu"
3562         ;;
3563         uc3[ab]*)
3564             subarch="avr32_uc"
3565             cpuflags="-mcpu=$cpu"
3566         ;;
3567         uc)
3568             subarch="avr32_uc"
3569             cpuflags="-march=$cpu"
3570         ;;
3571     esac
3572
3573 elif enabled bfin; then
3574
3575     cpuflags="-mcpu=$cpu"
3576
3577 elif enabled mips; then
3578
3579     cpuflags="-march=$cpu"
3580
3581 elif enabled ppc; then
3582
3583     disable ldbrx
3584
3585     case $(tolower $cpu) in
3586         601|ppc601|powerpc601)
3587             cpuflags="-mcpu=601"
3588             disable altivec
3589         ;;
3590         603*|ppc603*|powerpc603*)
3591             cpuflags="-mcpu=603"
3592             disable altivec
3593         ;;
3594         604*|ppc604*|powerpc604*)
3595             cpuflags="-mcpu=604"
3596             disable altivec
3597         ;;
3598         g3|75*|ppc75*|powerpc75*)
3599             cpuflags="-mcpu=750"
3600             disable altivec
3601         ;;
3602         g4|745*|ppc745*|powerpc745*)
3603             cpuflags="-mcpu=7450"
3604             disable vsx
3605         ;;
3606         74*|ppc74*|powerpc74*)
3607             cpuflags="-mcpu=7400"
3608             disable vsx
3609         ;;
3610         g5|970|ppc970|powerpc970)
3611             cpuflags="-mcpu=970"
3612             disable vsx
3613         ;;
3614         power[3-6]*)
3615             cpuflags="-mcpu=$cpu"
3616             disable vsx
3617         ;;
3618         power[7-8]*)
3619             cpuflags="-mcpu=$cpu"
3620             enable ldbrx
3621         ;;
3622         cell)
3623             cpuflags="-mcpu=cell"
3624             enable ldbrx
3625             disable vsx
3626         ;;
3627         e500mc)
3628             cpuflags="-mcpu=e500mc"
3629             disable altivec
3630         ;;
3631         e500v2)
3632             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3633             disable altivec
3634             disable dcbzl
3635         ;;
3636         e500)
3637             cpuflags="-mcpu=8540 -mhard-float"
3638             disable altivec
3639             disable dcbzl
3640         ;;
3641     esac
3642
3643 elif enabled sparc; then
3644
3645     case $cpu in
3646         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3647             cpuflags="-mcpu=$cpu"
3648         ;;
3649         ultrasparc*|niagara[234])
3650             cpuflags="-mcpu=$cpu"
3651         ;;
3652     esac
3653
3654 elif enabled x86; then
3655
3656     case $cpu in
3657         i[345]86|pentium)
3658             cpuflags="-march=$cpu"
3659             disable i686
3660             disable mmx
3661         ;;
3662         # targets that do NOT support nopl and conditional mov (cmov)
3663         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3664             cpuflags="-march=$cpu"
3665             disable i686
3666         ;;
3667         # targets that do support nopl and conditional mov (cmov)
3668         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3669             cpuflags="-march=$cpu"
3670             enable i686
3671             enable fast_cmov
3672         ;;
3673         # targets that do support conditional mov but on which it's slow
3674         pentium4|pentium4m|prescott|nocona)
3675             cpuflags="-march=$cpu"
3676             enable i686
3677             disable fast_cmov
3678         ;;
3679     esac
3680
3681 fi
3682
3683 if [ "$cpu" != generic ]; then
3684     add_cflags  $cpuflags
3685     add_asflags $cpuflags
3686     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3687 fi
3688
3689 # compiler sanity check
3690 check_exec <<EOF
3691 int main(void){ return 0; }
3692 EOF
3693 if test "$?" != 0; then
3694     echo "$cc is unable to create an executable file."
3695     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3696         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3697         echo "Only do this if you know what cross compiling means."
3698     fi
3699     die "C compiler test failed."
3700 fi
3701
3702 add_cppflags -D_ISOC99_SOURCE
3703 check_cflags -std=c99
3704 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3705 #include <stdlib.h>
3706 EOF
3707 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3708 #include <stdlib.h>
3709 EOF
3710
3711 add_host_cppflags -D_ISOC99_SOURCE
3712 check_host_cflags -std=c99
3713 check_host_cflags -Wall
3714 check_host_cflags -O3
3715
3716 check_64bit(){
3717     arch32=$1
3718     arch64=$2
3719     expr=$3
3720     check_code cc "" "int test[2*($expr) - 1]" &&
3721         subarch=$arch64 || subarch=$arch32
3722 }
3723
3724 case "$arch" in
3725     aarch64|alpha|ia64)
3726         spic=$shared
3727     ;;
3728     mips)
3729         check_64bit mips mips64 '_MIPS_SIM > 1'
3730         spic=$shared
3731     ;;
3732     parisc)
3733         check_64bit parisc parisc64 'sizeof(void *) > 4'
3734         spic=$shared
3735     ;;
3736     ppc)
3737         check_64bit ppc ppc64 'sizeof(void *) > 4'
3738         spic=$shared
3739     ;;
3740     s390)
3741         check_64bit s390 s390x 'sizeof(void *) > 4'
3742         spic=$shared
3743     ;;
3744     sparc)
3745         check_64bit sparc sparc64 'sizeof(void *) > 4'
3746         spic=$shared
3747     ;;
3748     x86)
3749         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3750         if test "$subarch" = "x86_64"; then
3751             spic=$shared
3752         fi
3753     ;;
3754 esac
3755
3756 enable $subarch
3757 enabled spic && enable_weak pic
3758
3759 # OS specific
3760 case $target_os in
3761     aix)
3762         SHFLAGS=-shared
3763         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3764         enabled shared && add_ldflags -Wl,-brtl
3765         ;;
3766     android)
3767         disable symver
3768         enable section_data_rel_ro
3769         SLIB_INSTALL_NAME='$(SLIBNAME)'
3770         SLIB_INSTALL_LINKS=
3771         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3772         ;;
3773     haiku)
3774         prefix_default="/boot/common"
3775         network_extralibs="-lnetwork"
3776         host_libs=
3777         ;;
3778     sunos)
3779         SHFLAGS='-shared -Wl,-h,$$(@F)'
3780         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3781         network_extralibs="-lsocket -lnsl"
3782         # When using suncc to build, the Solaris linker will mark
3783         # an executable with each instruction set encountered by
3784         # the Solaris assembler.  As our libraries contain their own
3785         # guards for processor-specific code, instead suppress
3786         # generation of the HWCAPS ELF section on Solaris x86 only.
3787         enabled_all suncc x86 &&
3788             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3789             add_ldflags -Wl,-M,mapfile
3790         nm_default='nm -P -g'
3791         version_script='-M'
3792         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3793         ;;
3794     netbsd)
3795         disable symver
3796         oss_indev_extralibs="-lossaudio"
3797         oss_outdev_extralibs="-lossaudio"
3798         ;;
3799     openbsd|bitrig)
3800         disable symver
3801         SHFLAGS='-shared'
3802         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3803         SLIB_INSTALL_LINKS=
3804         oss_indev_extralibs="-lossaudio"
3805         oss_outdev_extralibs="-lossaudio"
3806         ;;
3807     dragonfly)
3808         disable symver
3809         ;;
3810     freebsd)
3811         ;;
3812     bsd/os)
3813         add_extralibs -lpoll -lgnugetopt
3814         ;;
3815     darwin)
3816         enabled ppc && add_asflags -force_cpusubtype_ALL
3817         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3818         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3819         add_ldflags -Wl,-dynamic,-search_paths_first
3820         SLIBSUF=".dylib"
3821         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3822         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3823         objformat="macho"
3824         enabled x86_64 && objformat="macho64"
3825         enabled_any pic shared ||
3826             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3827         check_header dispatch/dispatch.h &&
3828             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3829         ;;
3830     msys*)
3831         die "Native MSYS builds are discouraged, please use the MINGW environment."
3832         ;;
3833     mingw32*|mingw64*)
3834         if test $target_os = "mingw32ce"; then
3835             disable network
3836         else
3837             target_os=mingw32
3838         fi
3839         LIBTARGET=i386
3840         if enabled x86_64; then
3841             LIBTARGET="i386:x86-64"
3842         elif enabled arm; then
3843             LIBTARGET=arm-wince
3844         fi
3845         check_ldflags -Wl,--nxcompat
3846         check_ldflags -Wl,--dynamicbase
3847         shlibdir_default="$bindir_default"
3848         SLIBPREF=""
3849         SLIBSUF=".dll"
3850         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3851         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3852         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3853         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3854         SLIB_INSTALL_LINKS=
3855         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3856         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3857         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3858         objformat="win32"
3859         dlltool="${cross_prefix}dlltool"
3860         ranlib=:
3861         enable dos_paths
3862         ;;
3863     win32|win64)
3864         disable symver
3865         if enabled shared; then
3866             # Link to the import library instead of the normal static library
3867             # for shared libs.
3868             LD_LIB='%.lib'
3869             # Cannot build both shared and static libs with MSVC or icl.
3870             disable static
3871         fi
3872         shlibdir_default="$bindir_default"
3873         SLIBPREF=""
3874         SLIBSUF=".dll"
3875         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3876         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3877         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3878         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3879         SLIB_INSTALL_LINKS=
3880         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3881         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3882         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3883         objformat="win32"
3884         ranlib=:
3885         enable dos_paths
3886         ;;
3887     cygwin*)
3888         target_os=cygwin
3889         shlibdir_default="$bindir_default"
3890         SLIBPREF="cyg"
3891         SLIBSUF=".dll"
3892         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3893         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3894         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3895         SLIB_INSTALL_LINKS=
3896         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3897         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3898         objformat="win32"
3899         enable dos_paths
3900         ;;
3901     *-dos|freedos|opendos)
3902         network_extralibs="-lsocket"
3903         objformat="coff"
3904         enable dos_paths
3905         add_cppflags -U__STRICT_ANSI__
3906         ;;
3907     linux)
3908         enable dv1394
3909         enable section_data_rel_ro
3910         ;;
3911     irix*)
3912         target_os=irix
3913         ranlib="echo ignoring ranlib"
3914         ;;
3915     os/2*)
3916         ln_s="cp -f"
3917         objformat="aout"
3918         add_cppflags -D_GNU_SOURCE
3919         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3920         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3921         LIBSUF="_s.a"
3922         SLIBPREF=""
3923         SLIBSUF=".dll"
3924         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3925         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3926         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3927             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3928             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3929             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3930             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3931         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3932             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3933         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3934         enable dos_paths
3935         ;;
3936     gnu/kfreebsd)
3937         add_cppflags -D_BSD_SOURCE
3938         ;;
3939     gnu)
3940         ;;
3941     qnx)
3942         add_cppflags -D_QNX_SOURCE
3943         network_extralibs="-lsocket"
3944         ;;
3945     symbian)
3946         SLIBSUF=".dll"
3947         enable dos_paths
3948         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3949         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3950         add_ldflags -Wl,--target1-abs,--no-undefined \
3951                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3952                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3953         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3954                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3955                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3956         ;;
3957     osf1)
3958         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3959         ;;
3960     minix)
3961         ;;
3962     plan9)
3963         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3964                      -D_REENTRANT_SOURCE        \
3965                      -D_RESEARCH_SOURCE         \
3966                      -DFD_SETSIZE=96            \
3967                      -DHAVE_SOCK_OPTS
3968         add_compat strtod.o strtod=avpriv_strtod
3969         network_extralibs='-lbsd'
3970         exeobjs=compat/plan9/main.o
3971         cp_f='cp'
3972         ;;
3973     none)
3974         ;;
3975     *)
3976         die "Unknown OS '$target_os'."
3977         ;;
3978 esac
3979
3980 # determine libc flavour
3981
3982 probe_libc(){
3983     pfx=$1
3984     pfx_no_=${pfx%_}
3985     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3986     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3987         eval ${pfx}libc_type=uclibc
3988         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3989     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3990         eval ${pfx}libc_type=glibc
3991         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3992     # MinGW headers can be installed on Cygwin, so check for newlib first.
3993     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3994         eval ${pfx}libc_type=newlib
3995         add_${pfx}cppflags -U__STRICT_ANSI__
3996     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3997     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3998         eval ${pfx}libc_type=mingw64
3999         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4000         eval test \$${pfx_no_}cc_type = "gcc" &&
4001             add_${pfx}cppflags -D__printf__=__gnu_printf__
4002     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4003          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4004         eval ${pfx}libc_type=mingw32
4005         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4006             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4007             die "ERROR: MinGW32 runtime version must be >= 3.15."
4008         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4009         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
4010             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4011         eval test \$${pfx_no_}cc_type = "gcc" &&
4012             add_${pfx}cppflags -D__printf__=__gnu_printf__
4013     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4014         eval ${pfx}libc_type=msvcrt
4015         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4016             if [ "$pfx" = host_ ]; then
4017                 add_host_cppflags -Dsnprintf=_snprintf
4018             else
4019                 add_compat strtod.o strtod=avpriv_strtod
4020                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4021                                              _snprintf=avpriv_snprintf  \
4022                                              vsnprintf=avpriv_vsnprintf
4023             fi
4024         fi
4025         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4026         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4027         # 0x601 by default unless something else is set by the user.
4028         # This can easily lead to us detecting functions only present
4029         # in such new versions and producing binaries requiring windows 7.0.
4030         # Therefore explicitly set the default to XP unless the user has
4031         # set something else on the command line.
4032         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4033         # family. For these cases, configure is free to use any functions
4034         # found in the SDK headers by default. (Alternatively, we could force
4035         # _WIN32_WINNT to 0x0602 in that case.)
4036         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4037             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4038 #ifdef WINAPI_FAMILY
4039 #include <winapifamily.h>
4040 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4041 #error not desktop
4042 #endif
4043 #endif
4044 EOF
4045         if [ "$pfx" = "" ]; then
4046             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4047         fi
4048     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4049         eval ${pfx}libc_type=klibc
4050     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4051         eval ${pfx}libc_type=bionic
4052     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4053         eval ${pfx}libc_type=solaris
4054         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4055     else
4056         eval ${pfx}libc_type=default
4057         add_${pfx}cppflags -D_DEFAULT_SOURCE
4058     fi
4059 }
4060
4061 probe_libc
4062 test -n "$libc_type" && enable libc_$libc_type
4063 probe_libc host_
4064 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4065
4066 case $libc_type in
4067     bionic)
4068         add_compat strtod.o strtod=avpriv_strtod
4069         ;;
4070 esac
4071
4072 # hacks for compiler/libc/os combinations
4073
4074 if enabled_all tms470 libc_glibc; then
4075     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4076     add_cppflags -D__USER_LABEL_PREFIX__=
4077     add_cppflags -D__builtin_memset=memset
4078     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4079     add_cflags   -pds=48    # incompatible redefinition of macro
4080 fi
4081
4082 if enabled_all ccc libc_glibc; then
4083     add_ldflags -Wl,-z,now  # calls to libots crash without this
4084 fi
4085
4086 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4087     add_cppflags '-I\$(SRC_PATH)/compat/float'
4088
4089 esc(){
4090     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4091 }
4092
4093 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
4094
4095 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4096
4097 set_default $PATHS_LIST
4098 set_default nm
4099
4100 # we need to build at least one lib type
4101 if ! enabled_any static shared; then
4102     cat <<EOF
4103 At least one library type must be built.
4104 Specify --enable-static to build the static libraries or --enable-shared to
4105 build the shared libraries as well. To only build the shared libraries specify
4106 --disable-static in addition to --enable-shared.
4107 EOF
4108     exit 1
4109 fi
4110
4111 die_license_disabled() {
4112     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4113 }
4114
4115 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
4116 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
4117 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
4118
4119 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4120
4121 disabled optimizations || check_cflags -fomit-frame-pointer
4122
4123 enable_weak_pic() {
4124     disabled pic && return
4125     enable pic
4126     add_cppflags -DPIC
4127     case "$target_os" in
4128     mingw*|cygwin*)
4129         ;;
4130     *)
4131         add_cflags -fPIC
4132         ;;
4133     esac
4134     add_asflags  -fPIC
4135 }
4136
4137 enabled pic && enable_weak_pic
4138
4139 check_cc <<EOF || die "Symbol mangling check failed."
4140 int ff_extern;
4141 EOF
4142 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4143 extern_prefix=${sym%%ff_extern*}
4144
4145 check_cc <<EOF && enable_weak inline_asm
4146 void foo(void) { __asm__ volatile ("" ::); }
4147 EOF
4148
4149 _restrict=
4150 for restrict_keyword in restrict __restrict__ __restrict; do
4151     check_cc <<EOF && _restrict=$restrict_keyword && break
4152 void foo(char * $restrict_keyword p);
4153 EOF
4154 done
4155
4156 check_cc <<EOF && enable pragma_deprecated
4157 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4158 EOF
4159
4160 check_cc <<EOF && enable attribute_packed
4161 struct { int x; } __attribute__((packed)) x;
4162 EOF
4163
4164 check_cc <<EOF && enable attribute_may_alias
4165 union { int x; } __attribute__((may_alias)) x;
4166 EOF
4167
4168 check_cc <<EOF || die "endian test failed"
4169 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4170 EOF
4171 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4172
4173 check_gas() {
4174     log "check_gas using '$as' as AS"
4175     # :vararg is used on aarch64, arm and ppc altivec
4176     check_as <<EOF || return 1
4177 .macro m n, y:vararg=0
4178 \n: .int \y
4179 .endm
4180 m x
4181 EOF
4182     # .altmacro is only used in arm asm
4183     ! enabled arm || check_as <<EOF || return 1
4184 .altmacro
4185 EOF
4186     enable gnu_as
4187     return 0
4188 }
4189
4190 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4191     nogas=:
4192     enabled_any arm aarch64 && nogas=die
4193     enabled_all ppc altivec && nogas=warn
4194     as_noop=-v
4195
4196     case $as_type in
4197         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4198         gcc)  gaspp_as_type=gas ;;
4199         *)    gaspp_as_type=$as_type ;;
4200     esac
4201
4202     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4203
4204     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4205         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4206
4207     if ! check_gas ; then
4208         as=${gas:=$as}
4209         check_gas || \
4210             $nogas "GNU assembler not found, install/update gas-preprocessor"
4211     fi
4212
4213     check_as <<EOF && enable as_func
4214 .func test
4215 .endfunc
4216 EOF
4217 fi
4218
4219 check_inline_asm inline_asm_labels '"1:\n"'
4220
4221 if enabled aarch64; then
4222     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4223     # internal assembler in clang 3.3 does not support this instruction
4224     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4225     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4226
4227     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4228
4229 elif enabled alpha; then
4230
4231     check_cflags -mieee
4232
4233 elif enabled arm; then
4234
4235     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4236     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4237     enabled thumb && check_cflags -mthumb || check_cflags -marm
4238
4239     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4240         enable vfp_args
4241     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4242         enable vfp_args
4243     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4244         case "${cross_prefix:-$cc}" in
4245             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4246             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4247 __asm__ (".eabi_attribute 28, 1");
4248 int main(void) { return 0; }
4249 EOF
4250         esac
4251         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4252     fi
4253
4254     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4255     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4256     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4257     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4258     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4259     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4260
4261     [ $target_os = linux ] || [ $target_os = android ] ||
4262         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4263             $ARCH_EXT_LIST_ARM
4264
4265     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4266
4267     check_as <<EOF && enable as_dn_directive
4268 ra .dn d0.i16
4269 .unreq ra
4270 EOF
4271     check_as <<EOF && enable as_fpu_directive
4272 .fpu neon
4273 EOF
4274
4275     # llvm's integrated assembler supports .object_arch from llvm 3.5
4276     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4277 .object_arch armv4
4278 EOF
4279
4280     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4281
4282 elif enabled mips; then
4283
4284     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4285
4286     # make sure that only an instruction set is enabled
4287     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4288
4289     if enabled mips64; then
4290         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4291             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4292                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4293     else
4294         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4295             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4296                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4297     fi
4298
4299 elif enabled parisc; then
4300
4301     if enabled gcc; then
4302         case $($cc -dumpversion) in
4303             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4304         esac
4305     fi
4306
4307 elif enabled ppc; then
4308
4309     enable local_aligned_8 local_aligned_16 local_aligned_32
4310
4311     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4312     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4313     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4314     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4315
4316     # AltiVec flags: The FSF version of GCC differs from the Apple version
4317     if enabled altivec; then
4318         check_cflags -maltivec -mabi=altivec &&
4319         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4320         check_cflags -faltivec
4321
4322         # check if our compiler supports Motorola AltiVec C API
4323         check_cc <<EOF || disable altivec
4324 $inc_altivec_h
4325 int main(void) {
4326     vector signed int v1 = (vector signed int) { 0 };
4327     vector signed int v2 = (vector signed int) { 1 };
4328     v1 = vec_add(v1, v2);
4329     return 0;
4330 }
4331 EOF
4332
4333         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4334     fi
4335
4336     if enabled vsx; then
4337         check_cflags -mvsx &&
4338         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4339     fi
4340
4341     if enabled power8; then
4342         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4343     fi
4344
4345 elif enabled x86; then
4346
4347     check_builtin rdtsc    intrin.h   "__rdtsc()"
4348     check_builtin mm_empty mmintrin.h "_mm_empty()"
4349
4350     enable local_aligned_8 local_aligned_16 local_aligned_32
4351
4352     # check whether EBP is available on x86
4353     # As 'i' is stored on the stack, this program will crash
4354     # if the base pointer is used to access it because the
4355     # base pointer is cleared in the inline assembly code.
4356     check_exec_crash <<EOF && enable ebp_available
4357 volatile int i=0;
4358 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4359 return i;
4360 EOF
4361
4362     # check whether EBX is available on x86
4363     check_inline_asm ebx_available '""::"b"(0)' &&
4364         check_inline_asm ebx_available '"":::"%ebx"'
4365
4366     # check whether xmm clobbers are supported
4367     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4368
4369     # check whether binutils is new enough to compile SSSE3/MMXEXT
4370     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4371     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4372
4373     if ! disabled_any asm mmx yasm; then
4374         if check_cmd $yasmexe --version; then
4375             enabled x86_64 && yasm_extra="-m amd64"
4376             yasm_debug="-g dwarf2"
4377         elif check_cmd nasm -v; then
4378             yasmexe=nasm
4379             yasm_debug="-g -F dwarf"
4380             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4381         fi
4382
4383         YASMFLAGS="-f $objformat $yasm_extra"
4384         enabled pic               && append YASMFLAGS "-DPIC"
4385         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4386         case "$objformat" in
4387             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4388         esac
4389
4390         check_yasm "movbe ecx, [5]" && enable yasm ||
4391             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4392         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4393         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4394         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4395         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4396         check_yasm "CPU amdnop" || disable cpunop
4397     fi
4398
4399     case "$cpu" in
4400         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4401             disable fast_clz
4402         ;;
4403     esac
4404
4405 fi
4406
4407 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4408
4409 check_ldflags -Wl,--as-needed
4410
4411 if check_func dlopen; then
4412     ldl=
4413 elif check_func dlopen -ldl; then
4414     ldl=-ldl
4415 fi
4416
4417 if ! disabled network; then
4418     check_func getaddrinfo $network_extralibs
4419     check_func inet_aton $network_extralibs
4420
4421     check_type netdb.h "struct addrinfo"
4422     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4423     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4424     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4425     check_type poll.h "struct pollfd"
4426     check_type netinet/sctp.h "struct sctp_event_subscribe"
4427     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4428     check_type netinet/in.h "struct sockaddr_in6"
4429     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4430     check_type "sys/types.h sys/socket.h" socklen_t
4431
4432     # Prefer arpa/inet.h over winsock2
4433     if check_header arpa/inet.h ; then
4434         check_func closesocket
4435     elif check_header winsock2.h ; then
4436         check_func_headers winsock2.h closesocket -lws2 &&
4437             network_extralibs="-lws2" ||
4438         { check_func_headers winsock2.h closesocket -lws2_32 &&
4439             network_extralibs="-lws2_32"; } || disable winsock2_h network
4440         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4441
4442         check_type ws2tcpip.h socklen_t
4443         check_type ws2tcpip.h "struct addrinfo"
4444         check_type ws2tcpip.h "struct group_source_req"
4445         check_type ws2tcpip.h "struct ip_mreq_source"
4446         check_type ws2tcpip.h "struct ipv6_mreq"
4447         check_type winsock2.h "struct pollfd"
4448         check_struct winsock2.h "struct sockaddr" sa_len
4449         check_type ws2tcpip.h "struct sockaddr_in6"
4450         check_type ws2tcpip.h "struct sockaddr_storage"
4451     else
4452         disable network
4453     fi
4454 fi
4455
4456 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4457 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4458 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4459 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4460
4461 case "$custom_allocator" in
4462     jemalloc)
4463         # jemalloc by default does not use a prefix
4464         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4465     ;;
4466     tcmalloc)
4467         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
4468         malloc_prefix=tc_
4469     ;;
4470 esac
4471
4472 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4473 check_func  ${malloc_prefix}memalign            && enable memalign
4474 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4475
4476 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4477     check_func_headers time.h clock_gettime ||
4478         { check_lib2 time.h clock_gettime -lrt && LIBRT="-lrt"; }
4479
4480 check_func  fcntl
4481 check_func  fork
4482 check_func  gethrtime
4483 check_func  getopt
4484 check_func  getrusage
4485 check_func  gettimeofday
4486 check_func  gmtime_r
4487 check_func  isatty
4488 check_func  localtime_r
4489 check_func  mach_absolute_time
4490 check_func  mkstemp
4491 check_func  mmap
4492 check_func  mprotect
4493 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4494 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4495 check_func  sched_getaffinity
4496 check_func  setrlimit
4497 check_func  strerror_r
4498 check_func  sysconf
4499 check_func  sysctl
4500 check_func  usleep
4501
4502 check_func_headers io.h setmode
4503 check_func_headers stdlib.h getenv
4504
4505 check_func_headers windows.h CoTaskMemFree -lole32
4506 check_func_headers windows.h GetProcessAffinityMask
4507 check_func_headers windows.h GetProcessTimes
4508 check_func_headers windows.h GetSystemTimeAsFileTime
4509 check_func_headers windows.h LoadLibrary
4510 check_func_headers windows.h MapViewOfFile
4511 check_func_headers windows.h SetConsoleTextAttribute
4512 check_func_headers windows.h Sleep
4513 check_func_headers windows.h VirtualAlloc
4514 check_struct windows.h "CONDITION_VARIABLE" Ptr
4515
4516 check_header direct.h
4517 check_header dlfcn.h
4518 check_header d3d11.h
4519 check_header dxva.h
4520 check_header dxva2api.h
4521 check_header io.h
4522 check_header mach/mach_time.h
4523 check_header malloc.h
4524 check_header poll.h
4525 check_header sys/mman.h
4526 check_header sys/param.h
4527 check_header sys/resource.h
4528 check_header sys/select.h
4529 check_header sys/time.h
4530 check_header sys/un.h
4531 check_header unistd.h
4532 check_header valgrind/valgrind.h
4533 check_header vdpau/vdpau.h
4534 check_header vdpau/vdpau_x11.h
4535 check_header VideoDecodeAcceleration/VDADecoder.h
4536 check_header windows.h
4537 check_header X11/extensions/XvMClib.h
4538
4539 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4540 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4541 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4542
4543 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4544
4545 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4546 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4547 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4548
4549 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4550 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4551 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4552 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4553 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4554
4555 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4556
4557 if ! disabled w32threads && ! enabled pthreads; then
4558     check_func_headers "windows.h process.h" _beginthreadex &&
4559         enable w32threads || disable w32threads
4560 fi
4561
4562 # check for some common methods of building with pthread support
4563 # do this before the optional library checks as some of them require pthreads
4564 if ! disabled pthreads && ! enabled w32threads; then
4565     enable pthreads
4566     if check_func pthread_join -pthread; then
4567         add_cflags -pthread
4568         add_extralibs -pthread
4569     elif check_func pthread_join -pthreads; then
4570         add_cflags -pthreads
4571         add_extralibs -pthreads
4572     elif check_func pthread_join -lpthreadGC2; then
4573         add_extralibs -lpthreadGC2
4574     elif check_lib pthread.h pthread_join -lpthread; then
4575         :
4576     elif ! check_func pthread_join; then
4577         disable pthreads
4578     fi
4579 fi
4580
4581 enabled pthreads &&
4582     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
4583
4584 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4585 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4586
4587 check_lib math.h sin -lm && LIBM="-lm"
4588
4589 atan2f_args=2
4590 ldexpf_args=2
4591 powf_args=2
4592
4593 for func in $MATH_FUNCS; do
4594     eval check_mathfunc $func \${${func}_args:-1}
4595 done
4596
4597 # these are off by default, so fail if requested and not available
4598 enabled avisynth          && { check_lib2 "avisynth/avisynth_c.h windows.h" LoadLibrary ||
4599                                check_lib2 "avxsynth/avxsynth_c.h dlfcn.h" dlopen -ldl   ||
4600                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4601 enabled cuda              && check_lib cuda.h cuInit -lcuda
4602 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4603 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4604 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4605 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4606 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4607 enabled libfdk_aac        && require_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4608 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4609 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4610 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4611                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4612                                done || die "ERROR: libgsm not found"; }
4613 enabled libhdcd           && require_pkg_config libhdcd "hdcd/hdcd_simple.h" hdcd_new
4614 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4615 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4616 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
4617 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4618 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4619 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4620 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4621 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4622 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
4623 enabled libopenjpeg       && { check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4624                                require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4625 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4626 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4627 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4628 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4629 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
4630 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4631 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4632 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4633 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4634 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4635 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4636 enabled libvpx            && require_pkg_config "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version && {
4637     enabled libvpx_vp8_decoder && {
4638         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
4639             disable libvpx_vp8_decoder;
4640     }
4641     enabled libvpx_vp8_encoder && {
4642         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
4643             disable libvpx_vp8_encoder;
4644     }
4645     enabled libvpx_vp9_decoder && {
4646         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
4647             disable libvpx_vp9_decoder;
4648     }
4649     enabled libvpx_vp9_encoder && {
4650         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
4651             disable libvpx_vp9_encoder;
4652     }
4653     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
4654         die "libvpx enabled but no supported decoders found"
4655     fi
4656 }
4657 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4658 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4659 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4660                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4661                                die "ERROR: libx264 version must be >= 0.118."; } &&
4662                              { check_cpp_condition x264.h "X264_MPEG2" &&
4663                                enable libx262; }
4664 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
4665                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
4666                                die "ERROR: libx265 version must be >= 57."; }
4667 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4668 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4669 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4670                                 { ! enabled cross_compile && {
4671                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
4672                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
4673                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
4674                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
4675                                die "ERROR: mmal not found"; }
4676 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
4677 enabled omx_rpi && enable omx
4678 enabled omx               && { check_header OMX_Core.h ||
4679                                 { ! enabled cross_compile && enabled omx_rpi && {
4680                                     add_cflags -isystem/opt/vc/include/IL ; }
4681                                 check_header OMX_Core.h ; } ||
4682                                die "ERROR: OpenMAX IL headers not found"; }
4683 enabled openssl           && { check_pkg_config openssl openssl/ssl.h SSL_library_init && {
4684                                add_cflags $openssl_cflags && add_extralibs $openssl_libs; }||
4685                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4686                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4687                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4688                                die "ERROR: openssl not found"; }
4689
4690 if enabled gnutls; then
4691     { check_lib2 gmp.h mpz_export -lgmp && enable gmp; } ||
4692     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4693 fi
4694
4695 # libdc1394 check
4696 if enabled libdc1394; then
4697     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
4698         enable libdc1394_2; } ||
4699     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4700         enable libdc1394_1; } ||
4701     die "ERROR: No version of libdc1394 found "
4702 fi
4703
4704 if enabled nvenc; then
4705     check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."
4706     check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6" ||
4707         die "ERROR: NVENC API version 5 or older is not supported"
4708 fi
4709
4710 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4711     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4712     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4713     enable sdl
4714 fi
4715
4716 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man
4717 ! disabled texi2html && check_cmd texi2html -version && enable texi2html || disable texi2html
4718
4719 check_header linux/fb.h
4720 check_header linux/videodev2.h
4721 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4722
4723 check_header AVFoundation/AVFoundation.h &&
4724     check_objcflags -fobjc-arc &&
4725     add_extralibs -framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia ||
4726     disable AVFoundation_AVFoundation_h
4727
4728 check_header sys/videoio.h
4729
4730 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4731 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4732 # w32api 3.12 had it defined wrong
4733 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4734
4735 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4736 { check_header dev/bktr/ioctl_meteor.h &&
4737   check_header dev/bktr/ioctl_bt848.h; } ||
4738 { check_header machine/ioctl_meteor.h &&
4739   check_header machine/ioctl_bt848.h; } ||
4740 { check_header dev/video/meteor/ioctl_meteor.h &&
4741   check_header dev/video/bktr/ioctl_bt848.h; } ||
4742 check_header dev/ic/bt8xx.h
4743
4744 check_header sndio.h
4745 check_header sys/soundcard.h
4746 check_header soundcard.h
4747
4748 enabled_any alsa_indev alsa_outdev &&
4749     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4750
4751 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4752     check_func jack_port_get_latency_range -ljack
4753
4754 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4755
4756 if enabled libcdio; then
4757     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4758     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4759     die "ERROR: No usable libcdio/cdparanoia found"
4760 fi
4761
4762 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4763
4764 if enabled libxcb; then
4765     check_pkg_config xcb-shape xcb/shape.h xcb_shape_rectangles || {
4766         enabled libxcb && die "ERROR: libxcb not found";
4767     } && enable libxcb
4768
4769     disabled libxcb_shm ||
4770         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
4771             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
4772         } && check_header sys/shm.h && enable libxcb_shm
4773
4774     disabled libxcb_xfixes ||
4775         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
4776             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
4777         } && enable libxcb_xfixes
4778
4779     add_cflags "$xcb_event_cflags $xcb_shm_cflags $xcb_xfixes_cflags"
4780     add_extralibs "$xcb_event_libs $xcb_shm_libs $xcb_xfixes_libs"
4781 fi
4782
4783 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4784
4785 enabled vaapi &&
4786     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
4787     disable vaapi
4788
4789 if enabled vaapi ; then
4790     enabled xlib &&
4791     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
4792     enable vaapi_x11
4793
4794     check_lib2 "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
4795     enable vaapi_drm
4796 fi
4797
4798 enabled vdpau &&
4799     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4800     disable vdpau
4801
4802 enabled vdpau && enabled xlib &&
4803     check_lib2 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4804     enable vdpau_x11
4805
4806 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4807
4808 # add some useful compiler flags if supported
4809 check_cflags -Wdeclaration-after-statement
4810 check_cflags -Wall
4811 check_cflags -Wdisabled-optimization
4812 check_cflags -Wpointer-arith
4813 check_cflags -Wredundant-decls
4814 check_cflags -Wwrite-strings
4815 check_cflags -Wtype-limits
4816 check_cflags -Wundef
4817 check_cflags -Wmissing-prototypes
4818 check_cflags -Wstrict-prototypes
4819 enabled extra_warnings && check_cflags -Winline
4820 enabled extra_warnings && check_cflags -Wcast-qual
4821
4822 check_disable_warning(){
4823     warning_flag=-W${1#-Wno-}
4824     test_cflags $warning_flag && add_cflags $1
4825 }
4826
4827 check_disable_warning -Wno-parentheses
4828 check_disable_warning -Wno-switch
4829 check_disable_warning -Wno-format-zero-length
4830 check_disable_warning -Wno-pointer-sign
4831
4832 # add some linker flags
4833 check_ldflags -Wl,--warn-common
4834 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4835 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
4836 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4837
4838 # add some strip flags
4839 # -wN '..@*' is more selective than -x, but not available everywhere.
4840 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4841
4842 enabled neon_clobber_test &&
4843     check_ldflags -Wl,--wrap,avcodec_open2              \
4844                   -Wl,--wrap,avcodec_decode_audio4      \