Add MagicYUV decoder
[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-avdevice       disable libavdevice build
117   --disable-avcodec        disable libavcodec build
118   --disable-avformat       disable libavformat build
119   --disable-avutil         disable libavutil build
120   --disable-swscale        disable libswscale build
121   --disable-avfilter       disable video filter support [no]
122   --disable-avresample     disable libavresample build [no]
123   --disable-pthreads       disable pthreads [auto]
124   --disable-w32threads     disable Win32 threads [auto]
125   --disable-network        disable network support [no]
126   --disable-dct            disable DCT code
127   --disable-error-resilience disable error resilience code
128   --disable-lsp            disable LSP code
129   --disable-lzo            disable LZO decoder code
130   --disable-mdct           disable MDCT code
131   --disable-rdft           disable RDFT code
132   --disable-fft            disable FFT code
133   --disable-faan           disable floating point AAN (I)DCT code
134
135 Individual component options:
136   --disable-everything     disable all components listed below
137   --disable-encoder=NAME   disable encoder NAME
138   --enable-encoder=NAME    enable encoder NAME
139   --disable-encoders       disable all encoders
140   --disable-decoder=NAME   disable decoder NAME
141   --enable-decoder=NAME    enable decoder NAME
142   --disable-decoders       disable all decoders
143   --disable-hwaccel=NAME   disable hwaccel NAME
144   --enable-hwaccel=NAME    enable hwaccel NAME
145   --disable-hwaccels       disable all hwaccels
146   --disable-muxer=NAME     disable muxer NAME
147   --enable-muxer=NAME      enable muxer NAME
148   --disable-muxers         disable all muxers
149   --disable-demuxer=NAME   disable demuxer NAME
150   --enable-demuxer=NAME    enable demuxer NAME
151   --disable-demuxers       disable all demuxers
152   --enable-parser=NAME     enable parser NAME
153   --disable-parser=NAME    disable parser NAME
154   --disable-parsers        disable all parsers
155   --enable-bsf=NAME        enable bitstream filter NAME
156   --disable-bsf=NAME       disable bitstream filter NAME
157   --disable-bsfs           disable all bitstream filters
158   --enable-protocol=NAME   enable protocol NAME
159   --disable-protocol=NAME  disable protocol NAME
160   --disable-protocols      disable all protocols
161   --enable-indev=NAME      enable input device NAME
162   --disable-indev=NAME     disable input device NAME
163   --disable-indevs         disable input devices
164   --enable-outdev=NAME     enable output device NAME
165   --disable-outdev=NAME    disable output device NAME
166   --disable-outdevs        disable output devices
167   --disable-devices        disable all devices
168   --enable-filter=NAME     enable filter NAME
169   --disable-filter=NAME    disable filter NAME
170   --disable-filters        disable all filters
171
172 External library support:
173
174   Using any of the following switches will allow Libav to link to the
175   corresponding external library. All the components depending on that library
176   will become enabled, if all their other dependencies are met and they are not
177   explicitly disabled. E.g. --enable-libwavpack will enable linking to
178   libwavpack and allow the libwavpack encoder to be built, unless it is
179   specifically disabled with --disable-encoder=libwavpack.
180
181   Note that only the system libraries are auto-detected. All the other external
182   libraries must be explicitly enabled.
183
184   Also note that the following help text describes the purpose of the libraries
185   themselves, not all their features will necessarily be usable by Libav.
186
187   --enable-avisynth          video frameserver
188   --enable-bzlib             bzip2 compression [autodetect]
189   --enable-frei0r            video filtering plugins
190   --enable-gnutls            crypto
191   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
192   --enable-libcdio           audio CD input
193   --enable-libdc1394         IEEE 1394/Firewire camera input
194   --enable-libdcadec         DCA audio decoding
195   --enable-libfaac           AAC audio encoding
196   --enable-libfdk-aac        AAC audio encoding/decoding
197   --enable-libfontconfig     font configuration and management
198   --enable-libfreetype       font rendering
199   --enable-libgsm            GSM audio encoding/decoding
200   --enable-libilbc           ILBC audio encoding/decoding
201   --enable-libkvazaar        HEVC video encoding
202   --enable-libmp3lame        MP3 audio encoding
203   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
204   --enable-libopencore-amrwb AMR-WB audio decoding
205   --enable-libopencv         computer vision
206   --enable-libopenh264       H.264 video encoding/decoding
207   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
208   --enable-libopus           Opus audio encoding/decoding
209   --enable-libpulse          Pulseaudio sound server
210   --enable-librtmp           RTMP streaming
211   --enable-libschroedinger   Dirac video encoding/decoding
212   --enable-libsnappy         snappy compression
213   --enable-libspeex          Speex audio encoding/decoding
214   --enable-libtheora         Theora video encoding/decoding
215   --enable-libtwolame        MP2 audio encoding
216   --enable-libvo-aacenc      AAC audio encoding
217   --enable-libvo-amrwbenc    AMR-WB audio encoding
218   --enable-libvorbis         Vorbis audio encoding/decoding
219   --enable-libvpx            VP* video encoding/decoding
220   --enable-libwavpack        Wavpack audio encoding/decoding
221   --enable-libwebp           WebP image encoding/decoding
222   --enable-libx264           H.264 video encoding
223   --enable-libx265           HEVC video encoding
224   --enable-libxavs           Chinese AVS video encoding
225   --enable-libxcb            X window system protocol communication
226   --enable-libxcb-shm        X11 shm communication [auto]
227   --enable-libxcb-xfixes     X11 mouse rendering [auto]
228   --enable-libxvid           MPEG-4 ASP video encoding
229   --enable-openssl           crypto
230   --enable-x11grab           X11 grabbing through xlib (legacy, use xcb instead)
231   --enable-zlib              compression [autodetect]
232
233   The following libraries provide various hardware acceleration features:
234   --enable-cuda    Nvidia CUDA (dynamically linked)
235   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
236   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
237   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
238   --enable-libnpp  Nvidia CUDA processing
239   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
240   --enable-nvenc   Nvidia video encoding
241   --enable-omx     OpenMAX IL
242   --enable-omx-rpi OpenMAX IL for Raspberry Pi
243   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
244   --enable-vda     Apple Video Decode Acceleration [auto]
245   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
246
247 Toolchain options:
248   --arch=ARCH              select architecture [$arch]
249   --cpu=CPU                select the minimum required CPU (affects
250                            instruction selection, may crash on older CPUs)
251   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
252   --enable-cross-compile   assume a cross-compiler is used
253   --sysroot=PATH           root of cross-build tree
254   --sysinclude=PATH        location of cross-build system headers
255   --target-os=OS           compiler targets OS [$target_os]
256   --target-exec=CMD        command to run executables on target
257   --target-path=DIR        path to view of build directory on target
258   --target-samples=DIR     path to samples directory on target
259   --toolchain=NAME         set tool defaults according to NAME
260   --nm=NM                  use nm tool
261   --ar=AR                  use archive tool AR [$ar_default]
262   --as=AS                  use assembler AS [$as_default]
263   --cc=CC                  use C compiler CC [$cc_default]
264   --objcc=OCC              use ObjC compiler OCC [$cc_default]
265   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
266   --ld=LD                  use linker LD
267   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
268   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
269   --host-cc=HOSTCC         use host C compiler HOSTCC
270   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
271   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
272   --host-ld=HOSTLD         use host linker HOSTLD
273   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
274   --host-libs=HLIBS        use libs HLIBS when linking for host
275   --host-os=OS             compiler host OS [$target_os]
276   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
277   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
278   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
279   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
280   --extra-libs=ELIBS       add ELIBS [$ELIBS]
281   --extra-version=STRING   version string suffix []
282   --optflags=OPTFLAGS      override optimization-related compiler flags
283   --build-suffix=SUFFIX    library name suffix []
284   --enable-pic             build position-independent code
285   --enable-thumb           compile for Thumb instruction set
286   --enable-lto             use link-time optimization
287   --env="ENV=override"     override the environment variables
288
289 Advanced options (experts only):
290   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
291   --custom-allocator=NAME  use a supported custom allocator
292   --disable-symver         disable symbol versioning
293   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
294   --disable-safe-bitstream-reader
295                            disable buffer boundary checking in bitreaders
296                            (faster, but may crash)
297   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
298   --enable-sram            allow use of on-chip SRAM
299
300 Optimization options (experts only):
301   --disable-asm            disable all assembly optimizations
302   --disable-altivec        disable AltiVec optimizations
303   --disable-vsx            disable VSX optimizations
304   --disable-power8         disable POWER8 optimizations
305   --disable-amd3dnow       disable 3DNow! optimizations
306   --disable-amd3dnowext    disable 3DNow! extended optimizations
307   --disable-mmx            disable MMX optimizations
308   --disable-mmxext         disable MMXEXT optimizations
309   --disable-sse            disable SSE optimizations
310   --disable-sse2           disable SSE2 optimizations
311   --disable-sse3           disable SSE3 optimizations
312   --disable-ssse3          disable SSSE3 optimizations
313   --disable-sse4           disable SSE4 optimizations
314   --disable-sse42          disable SSE4.2 optimizations
315   --disable-avx            disable AVX optimizations
316   --disable-xop            disable XOP optimizations
317   --disable-fma3           disable FMA3 optimizations
318   --disable-fma4           disable FMA4 optimizations
319   --disable-avx2           disable AVX2 optimizations
320   --disable-armv5te        disable armv5te optimizations
321   --disable-armv6          disable armv6 optimizations
322   --disable-armv6t2        disable armv6t2 optimizations
323   --disable-vfp            disable VFP optimizations
324   --disable-neon           disable NEON optimizations
325   --disable-inline-asm     disable use of inline assembly
326   --disable-yasm           disable use of nasm/yasm assembly
327
328 Developer options (useful when working on Libav itself):
329   --disable-debug          disable debugging symbols
330   --enable-debug=LEVEL     set the debug level [$debuglevel]
331   --disable-optimizations  disable compiler optimizations
332   --enable-extra-warnings  enable more compiler warnings
333   --samples=PATH           location of test samples for FATE, if not set use
334                            \$LIBAV_SAMPLES at make invocation time.
335   --enable-neon-clobber-test check NEON registers for clobbering (should be
336                            used only for debugging purposes)
337   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
338                            should be used only for debugging purposes)
339   --enable-random          randomly enable/disable components
340   --disable-random
341   --enable-random=LIST     randomly enable/disable specific components or
342   --disable-random=LIST    component groups. LIST is a comma-separated list
343                            of NAME[:PROB] entries where NAME is a component
344                            (group) and PROB the probability associated with
345                            NAME (default 0.5).
346   --random-seed=VALUE      seed value for --enable/disable-random
347   --disable-valgrind-backtrace do not print a backtrace under Valgrind
348                            (only applies to --disable-optimizations builds)
349
350 NOTE: Object files are built at the place where configure is launched.
351 EOF
352   exit 0
353 }
354
355 quotes='""'
356
357 log(){
358     echo "$@" >> $logfile
359 }
360
361 log_file(){
362     log BEGIN $1
363     i=1
364     while read line; do
365         printf '%5s   %s\n' "${i}" "${line}"
366         i=$(($i+1))
367     done < $1 >> $logfile
368     log END $1
369 }
370
371 echolog(){
372     log "$@"
373     echo "$@"
374 }
375
376 warn(){
377     log "WARNING: $*"
378     WARNINGS="${WARNINGS}WARNING: $*\n"
379 }
380
381 die(){
382     echolog "$@"
383     cat <<EOF
384
385 If you think configure made a mistake, make sure you are using the latest
386 version from Git.  If the latest version fails, report the problem to the
387 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
388 EOF
389     if disabled logging; then
390         cat <<EOF
391 Rerun configure with logging enabled (do not use --disable-logging), and
392 include the log this produces with your report.
393 EOF
394     else
395         cat <<EOF
396 Include the log file "$logfile" produced by configure as this will help
397 solving the problem.
398 EOF
399     fi
400     exit 1
401 }
402
403 # Avoid locale weirdness, besides we really just want to translate ASCII.
404 toupper(){
405     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
406 }
407
408 tolower(){
409     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
410 }
411
412 c_escape(){
413     echo "$*" | sed 's/["\\]/\\\0/g'
414 }
415
416 sh_quote(){
417     v=$(echo "$1" | sed "s/'/'\\\\''/g")
418     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
419     echo "$v"
420 }
421
422 cleanws(){
423     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
424 }
425
426 filter(){
427     pat=$1
428     shift
429     for v; do
430         eval "case $v in $pat) echo $v ;; esac"
431     done
432 }
433
434 filter_out(){
435     pat=$1
436     shift
437     for v; do
438         eval "case $v in $pat) ;; *) echo $v ;; esac"
439     done
440 }
441
442 map(){
443     m=$1
444     shift
445     for v; do eval $m; done
446 }
447
448 add_suffix(){
449     suffix=$1
450     shift
451     for v; do echo ${v}${suffix}; done
452 }
453
454 set_all(){
455     value=$1
456     shift
457     for var in $*; do
458         eval $var=$value
459     done
460 }
461
462 set_weak(){
463     value=$1
464     shift
465     for var; do
466         eval : \${$var:=$value}
467     done
468 }
469
470 sanitize_var_name(){
471     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
472 }
473
474 set_safe(){
475     var=$1
476     shift
477     eval $(sanitize_var_name "$var")='$*'
478 }
479
480 get_safe(){
481     eval echo \$$(sanitize_var_name "$1")
482 }
483
484 pushvar(){
485     for pvar in $*; do
486         eval level=\${${pvar}_level:=0}
487         eval ${pvar}_${level}="\$$pvar"
488         eval ${pvar}_level=$(($level+1))
489     done
490 }
491
492 popvar(){
493     for pvar in $*; do
494         eval level=\${${pvar}_level:-0}
495         test $level = 0 && continue
496         eval level=$(($level-1))
497         eval $pvar="\${${pvar}_${level}}"
498         eval ${pvar}_level=$level
499         eval unset ${pvar}_${level}
500     done
501 }
502
503 enable(){
504     set_all yes $*
505 }
506
507 disable(){
508     set_all no $*
509 }
510
511 enable_weak(){
512     set_weak yes $*
513 }
514
515 disable_weak(){
516     set_weak no $*
517 }
518
519 enable_safe(){
520     for var; do
521         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
522     done
523 }
524
525 disable_safe(){
526     for var; do
527         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
528     done
529 }
530
531 do_enable_deep(){
532     for var; do
533         enabled $var && continue
534         eval sel="\$${var}_select"
535         eval sgs="\$${var}_suggest"
536         pushvar var sgs
537         enable_deep $sel
538         popvar sgs
539         enable_deep_weak $sgs
540         popvar var
541     done
542 }
543
544 enable_deep(){
545     do_enable_deep $*
546     enable $*
547 }
548
549 enable_deep_weak(){
550     for var; do
551         disabled $var && continue
552         pushvar var
553         do_enable_deep $var
554         popvar var
555         enable_weak $var
556     done
557 }
558
559 enabled(){
560     test "${1#!}" = "$1" && op== || op=!=
561     eval test "x\$${1#!}" $op "xyes"
562 }
563
564 disabled(){
565     test "${1#!}" = "$1" && op== || op=!=
566     eval test "x\$${1#!}" $op "xno"
567 }
568
569 enabled_all(){
570     for opt; do
571         enabled $opt || return 1
572     done
573 }
574
575 disabled_all(){
576     for opt; do
577         disabled $opt || return 1
578     done
579 }
580
581 enabled_any(){
582     for opt; do
583         enabled $opt && return 0
584     done
585 }
586
587 disabled_any(){
588     for opt; do
589         disabled $opt && return 0
590     done
591     return 1
592 }
593
594 set_default(){
595     for opt; do
596         eval : \${$opt:=\$${opt}_default}
597     done
598 }
599
600 is_in(){
601     value=$1
602     shift
603     for var in $*; do
604         [ $var = $value ] && return 0
605     done
606     return 1
607 }
608
609 do_check_deps(){
610     for cfg; do
611         cfg="${cfg#!}"
612         enabled ${cfg}_checking && die "Circular dependency for $cfg."
613         disabled ${cfg}_checking && continue
614         enable ${cfg}_checking
615         append allopts $cfg
616
617         eval dep_all="\$${cfg}_deps"
618         eval dep_any="\$${cfg}_deps_any"
619         eval dep_sel="\$${cfg}_select"
620         eval dep_sgs="\$${cfg}_suggest"
621         eval dep_ifa="\$${cfg}_if"
622         eval dep_ifn="\$${cfg}_if_any"
623
624         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
625         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
626         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
627
628         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
629         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
630         enabled_all  $dep_all || disable $cfg
631         enabled_any  $dep_any || disable $cfg
632         disabled_any $dep_sel && disable $cfg
633
634         if enabled $cfg; then
635             enable_deep $dep_sel
636             enable_deep_weak $dep_sgs
637         fi
638
639         disable ${cfg}_checking
640     done
641 }
642
643 check_deps(){
644     unset allopts
645
646     do_check_deps "$@"
647
648     for cfg in $allopts; do
649         enabled $cfg || continue
650         eval dep_extralibs="\$${cfg}_extralibs"
651         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
652     done
653 }
654
655 print_config(){
656     pfx=$1
657     files=$2
658     shift 2
659     map 'eval echo "$v \${$v:-no}"' "$@" |
660     awk "BEGIN { split(\"$files\", files) }
661         {
662             c = \"$pfx\" toupper(\$1);
663             v = \$2;
664             sub(/yes/, 1, v);
665             sub(/no/,  0, v);
666             for (f in files) {
667                 file = files[f];
668                 if (file ~ /\\.h\$/) {
669                     printf(\"#define %s %d\\n\", c, v) >>file;
670                 } else if (file ~ /\\.asm\$/) {
671                     printf(\"%%define %s %d\\n\", c, v) >>file;
672                 } else if (file ~ /\\.mak\$/) {
673                     n = -v ? \"\" : \"!\";
674                     printf(\"%s%s=yes\\n\", n, c) >>file;
675                 }
676             }
677         }"
678 }
679
680 print_enabled(){
681     suf=$1
682     shift
683     for v; do
684         enabled $v && printf "%s\n" ${v%$suf}
685     done
686 }
687
688 append(){
689     var=$1
690     shift
691     eval "$var=\"\$$var $*\""
692 }
693
694 prepend(){
695     var=$1
696     shift
697     eval "$var=\"$* \$$var\""
698 }
699
700 unique(){
701     var=$1
702     uniq_list=""
703     for tok in $(eval echo \$$var); do
704         uniq_list="$(filter_out $tok $uniq_list) $tok"
705     done
706     eval "$var=\"${uniq_list}\""
707 }
708
709 add_cppflags(){
710     append CPPFLAGS "$@"
711 }
712
713 add_cflags(){
714     append CFLAGS $($cflags_filter "$@")
715 }
716
717 add_asflags(){
718     append ASFLAGS $($asflags_filter "$@")
719 }
720
721 add_objcflags(){
722     append OBJCFLAGS $($objcflags_filter "$@")
723 }
724
725 add_ldflags(){
726     append LDFLAGS $($ldflags_filter "$@")
727 }
728
729 add_ldexeflags(){
730     append LDEXEFLAGS $($ldflags_filter "$@")
731 }
732
733 add_stripflags(){
734     append STRIPFLAGS "$@"
735 }
736
737 add_extralibs(){
738     prepend extralibs $($ldflags_filter "$@")
739 }
740
741 add_host_cppflags(){
742     append host_cppflags "$@"
743 }
744
745 add_host_cflags(){
746     append host_cflags $($host_cflags_filter "$@")
747 }
748
749 add_host_ldflags(){
750     append host_ldflags $($host_ldflags_filter "$@")
751 }
752
753 add_compat(){
754     append compat_objs $1
755     shift
756     map 'add_cppflags -D$v' "$@"
757 }
758
759 check_cmd(){
760     log "$@"
761     "$@" >> $logfile 2>&1
762 }
763
764 cc_o(){
765     eval printf '%s\\n' $CC_O
766 }
767
768 cc_e(){
769     eval printf '%s\\n' $CC_E
770 }
771
772 check_cc(){
773     log check_cc "$@"
774     cat > $TMPC
775     log_file $TMPC
776     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
777 }
778
779 check_objcc(){
780     log check_objcc "$@"
781     cat > $TMPC
782     log_file $TMPC
783     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
784 }
785
786 check_cpp(){
787     log check_cpp "$@"
788     cat > $TMPC
789     log_file $TMPC
790     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
791 }
792
793 as_o(){
794     eval printf '%s\\n' $AS_O
795 }
796
797 check_as(){
798     log check_as "$@"
799     cat > $TMPS
800     log_file $TMPS
801     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
802 }
803
804 check_inline_asm(){
805     log check_inline_asm "$@"
806     name="$1"
807     code="$2"
808     shift 2
809     disable $name
810     check_cc "$@" <<EOF && enable $name
811 void foo(void){ __asm__ volatile($code); }
812 EOF
813 }
814
815 check_insn(){
816     log check_insn "$@"
817     check_inline_asm ${1}_inline "\"$2\""
818     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
819 }
820
821 check_yasm(){
822     log check_yasm "$@"
823     echo "$1" > $TMPS
824     log_file $TMPS
825     shift 1
826     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
827 }
828
829 ld_o(){
830     eval printf '%s\\n' $LD_O
831 }
832
833 check_ld(){
834     log check_ld "$@"
835     flags=$(filter_out '-l*' "$@")
836     libs=$(filter '-l*' "$@")
837     check_cc $($cflags_filter $flags) || return
838     flags=$($ldflags_filter $flags)
839     libs=$($ldflags_filter $libs)
840     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
841 }
842
843 print_include(){
844     hdr=$1
845     test "${hdr%.h}" = "${hdr}" &&
846         echo "#include $hdr"    ||
847         echo "#include <$hdr>"
848 }
849
850 check_code(){
851     log check_code "$@"
852     check=$1
853     headers=$2
854     code=$3
855     shift 3
856     {
857         for hdr in $headers; do
858             print_include $hdr
859         done
860         echo "int main(void) { $code; return 0; }"
861     } | check_$check "$@"
862 }
863
864 check_cppflags(){
865     log check_cppflags "$@"
866     check_cc "$@" <<EOF && append CPPFLAGS "$@"
867 int x;
868 EOF
869 }
870
871 test_cflags(){
872     log test_cflags "$@"
873     set -- $($cflags_filter "$@")
874     check_cc "$@" <<EOF
875 int x;
876 EOF
877 }
878
879 check_cflags(){
880     log check_cflags "$@"
881     test_cflags "$@" && add_cflags "$@"
882 }
883
884 test_objcflags(){
885     log test_cflags "$@"
886     set -- $($cflags_filter "$@")
887     check_objcc "$@" <<EOF
888 int x;
889 EOF
890 }
891
892 check_objcflags(){
893     log check_cflags "$@"
894     test_objcflags "$@" && add_objcflags "$@"
895 }
896
897 test_ldflags(){
898     log test_ldflags "$@"
899     check_ld "$@" <<EOF
900 int main(void){ return 0; }
901 EOF
902 }
903
904 check_ldflags(){
905     log check_ldflags "$@"
906     test_ldflags "$@" && add_ldflags "$@"
907 }
908
909 test_stripflags(){
910     log test_stripflags "$@"
911     # call check_cc to get a fresh TMPO
912     check_cc <<EOF
913 int main(void) { return 0; }
914 EOF
915     check_cmd $strip $STRIPFLAGS "$@" $TMPO
916 }
917
918 check_stripflags(){
919     log check_stripflags "$@"
920     test_stripflags "$@" && add_stripflags "$@"
921 }
922
923 check_header(){
924     log check_header "$@"
925     header=$1
926     shift
927     disable_safe $header
928     check_cpp "$@" <<EOF && enable_safe $header
929 #include <$header>
930 int x;
931 EOF
932 }
933
934 check_func(){
935     log check_func "$@"
936     func=$1
937     shift
938     disable $func
939     check_ld "$@" <<EOF && enable $func
940 extern int $func();
941 int main(void){ $func(); }
942 EOF
943 }
944
945 check_mathfunc(){
946     log check_mathfunc "$@"
947     func=$1
948     narg=$2
949     shift 2
950     test $narg = 2 && args="f, g" || args="f"
951     disable $func
952     check_ld "$@" <<EOF && enable $func
953 #include <math.h>
954 float foo(float f, float g) { return $func($args); }
955 int main(void){ return 0; }
956 EOF
957 }
958
959 check_func_headers(){
960     log check_func_headers "$@"
961     headers=$1
962     funcs=$2
963     shift 2
964     {
965         for hdr in $headers; do
966             print_include $hdr
967         done
968         for func in $funcs; do
969             echo "long check_$func(void) { return (long) $func; }"
970         done
971         echo "int main(void) { return 0; }"
972     } | check_ld "$@" && enable $funcs && enable_safe $headers
973 }
974
975 check_cpp_condition(){
976     log check_cpp_condition "$@"
977     header=$1
978     condition=$2
979     shift 2
980     check_cpp "$@" <<EOF
981 #include <$header>
982 #if !($condition)
983 #error "unsatisfied condition: $condition"
984 #endif
985 EOF
986 }
987
988 check_lib(){
989     log check_lib "$@"
990     header="$1"
991     func="$2"
992     shift 2
993     check_header $header && check_func $func "$@" && add_extralibs "$@"
994 }
995
996 check_lib2(){
997     log check_lib2 "$@"
998     headers="$1"
999     funcs="$2"
1000     shift 2
1001     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1002 }
1003
1004 check_pkg_config(){
1005     log check_pkg_config "$@"
1006     pkg="$1"
1007     headers="$2"
1008     funcs="$3"
1009     shift 3
1010     check_cmd $pkg_config --exists --print-errors $pkg || return
1011     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1012     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1013     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1014         set_safe "${pkg}_cflags" $pkg_cflags   &&
1015         set_safe "${pkg}_libs"   $pkg_libs
1016 }
1017
1018 check_exec(){
1019     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1020 }
1021
1022 check_exec_crash(){
1023     code=$(cat)
1024
1025     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1026     # are safe but may not be available everywhere.  Thus we use
1027     # raise(SIGTERM) instead.  The check is run in a subshell so we
1028     # can redirect the "Terminated" message from the shell.  SIGBUS
1029     # is not defined by standard C so it is used conditionally.
1030
1031     (check_exec "$@") >> $logfile 2>&1 <<EOF
1032 #include <signal.h>
1033 static void sighandler(int sig){
1034     raise(SIGTERM);
1035 }
1036 int foo(void){
1037     $code
1038 }
1039 int (*func_ptr)(void) = foo;
1040 int main(void){
1041     signal(SIGILL, sighandler);
1042     signal(SIGFPE, sighandler);
1043     signal(SIGSEGV, sighandler);
1044 #ifdef SIGBUS
1045     signal(SIGBUS, sighandler);
1046 #endif
1047     return func_ptr();
1048 }
1049 EOF
1050 }
1051
1052 check_type(){
1053     log check_type "$@"
1054     headers=$1
1055     type=$2
1056     shift 2
1057     disable_safe "$type"
1058     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1059 }
1060
1061 check_struct(){
1062     log check_struct "$@"
1063     headers=$1
1064     struct=$2
1065     member=$3
1066     shift 3
1067     disable_safe "${struct}_${member}"
1068     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1069         enable_safe "${struct}_${member}"
1070 }
1071
1072 check_builtin(){
1073     log check_builtin "$@"
1074     name=$1
1075     headers=$2
1076     builtin=$3
1077     shift 3
1078     disable "$name"
1079     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1080 }
1081
1082 check_compile_assert(){
1083     log check_compile_assert "$@"
1084     name=$1
1085     headers=$2
1086     condition=$3
1087     shift 3
1088     disable "$name"
1089     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1090 }
1091
1092 require(){
1093     name="$1"
1094     header="$2"
1095     func="$3"
1096     shift 3
1097     check_lib $header $func "$@" || die "ERROR: $name not found"
1098 }
1099
1100 require2(){
1101     name="$1"
1102     headers="$2"
1103     func="$3"
1104     shift 3
1105     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1106 }
1107
1108 require_pkg_config(){
1109     pkg="$1"
1110     check_pkg_config "$@" || die "ERROR: $pkg not found"
1111     add_cflags    $(get_safe "${pkg}_cflags")
1112     add_extralibs $(get_safe "${pkg}_libs")
1113 }
1114
1115 hostcc_e(){
1116     eval printf '%s\\n' $HOSTCC_E
1117 }
1118
1119 hostcc_o(){
1120     eval printf '%s\\n' $HOSTCC_O
1121 }
1122
1123 check_host_cc(){
1124     log check_host_cc "$@"
1125     cat > $TMPC
1126     log_file $TMPC
1127     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1128 }
1129
1130 check_host_cpp(){
1131     log check_host_cpp "$@"
1132     cat > $TMPC
1133     log_file $TMPC
1134     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1135 }
1136
1137 check_host_cppflags(){
1138     log check_host_cppflags "$@"
1139     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1140 int x;
1141 EOF
1142 }
1143
1144 check_host_cflags(){
1145     log check_host_cflags "$@"
1146     set -- $($host_cflags_filter "$@")
1147     check_host_cc "$@" <<EOF && append host_cflags "$@"
1148 int x;
1149 EOF
1150 }
1151
1152 check_host_cpp_condition(){
1153     log check_host_cpp_condition "$@"
1154     header=$1
1155     condition=$2
1156     shift 2
1157     check_host_cpp "$@" <<EOF
1158 #include <$header>
1159 #if !($condition)
1160 #error "unsatisfied condition: $condition"
1161 #endif
1162 EOF
1163 }
1164
1165 apply(){
1166     file=$1
1167     shift
1168     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1169 }
1170
1171 cp_if_changed(){
1172     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1173     mkdir -p "$(dirname $2)"
1174     $cp_f "$1" "$2"
1175 }
1176
1177 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1178 # system-dependent things.
1179
1180 AVCODEC_COMPONENTS="
1181     bsfs
1182     decoders
1183     encoders
1184     hwaccels
1185     parsers
1186 "
1187
1188 AVDEVICE_COMPONENTS="
1189     indevs
1190     outdevs
1191 "
1192 AVFILTER_COMPONENTS="
1193     filters
1194 "
1195 AVFORMAT_COMPONENTS="
1196     demuxers
1197     muxers
1198     protocols
1199 "
1200
1201 AVRESAMPLE_COMPONENTS=""
1202 AVUTIL_COMPONENTS=""
1203
1204 COMPONENT_LIST="
1205     $AVCODEC_COMPONENTS
1206     $AVDEVICE_COMPONENTS
1207     $AVFILTER_COMPONENTS
1208     $AVFORMAT_COMPONENTS
1209     $AVRESAMPLE_COMPONENTS
1210     $AVUTIL_COMPONENTS
1211 "
1212
1213 EXAMPLE_LIST="
1214     avcodec_example
1215     filter_audio_example
1216     metadata_example
1217     output_example
1218     qsvdec_example
1219     transcode_aac_example
1220 "
1221
1222 HWACCEL_LIBRARY_LIST="
1223     cuda
1224     d3d11va
1225     dxva2
1226     libmfx
1227     libnpp
1228     mmal
1229     nvenc
1230     omx
1231     vaapi
1232     vda
1233     vdpau
1234 "
1235
1236 EXTERNAL_LIBRARY_LIST="
1237     avisynth
1238     bzlib
1239     frei0r
1240     gnutls
1241     libbs2b
1242     libcdio
1243     libdc1394
1244     libdcadec
1245     libfaac
1246     libfdk_aac
1247     libfontconfig
1248     libfreetype
1249     libgsm
1250     libilbc
1251     libkvazaar
1252     libmp3lame
1253     libopencore_amrnb
1254     libopencore_amrwb
1255     libopencv
1256     libopenh264
1257     libopenjpeg
1258     libopus
1259     libpulse
1260     librtmp
1261     libschroedinger
1262     libsnappy
1263     libspeex
1264     libtheora
1265     libtwolame
1266     libvo_aacenc
1267     libvo_amrwbenc
1268     libvorbis
1269     libvpx
1270     libwavpack
1271     libwebp
1272     libx264
1273     libx265
1274     libxavs
1275     libxcb
1276     libxcb_shm
1277     libxcb_xfixes
1278     libxvid
1279     openssl
1280     x11grab
1281     zlib
1282 "
1283
1284 FEATURE_LIST="
1285     gray
1286     hardcoded_tables
1287     omx_rpi
1288     runtime_cpudetect
1289     safe_bitstream_reader
1290     shared
1291     small
1292     sram
1293     static
1294     swscale_alpha
1295 "
1296
1297 LIBRARY_LIST="
1298     avcodec
1299     avdevice
1300     avfilter
1301     avformat
1302     avresample
1303     avutil
1304     swscale
1305 "
1306
1307 LICENSE_LIST="
1308     gpl
1309     nonfree
1310     version3
1311 "
1312
1313 PROGRAM_LIST="
1314     avconv
1315     avplay
1316     avprobe
1317 "
1318
1319 SUBSYSTEM_LIST="
1320     dct
1321     doc
1322     error_resilience
1323     faan
1324     fft
1325     lsp
1326     lzo
1327     mdct
1328     network
1329     rdft
1330 "
1331
1332 CONFIG_LIST="
1333     $COMPONENT_LIST
1334     $EXAMPLE_LIST
1335     $EXTERNAL_LIBRARY_LIST
1336     $HWACCEL_LIBRARY_LIST
1337     $FEATURE_LIST
1338     $LICENSE_LIST
1339     $LIBRARY_LIST
1340     $PROGRAM_LIST
1341     $SUBSYSTEM_LIST
1342     memalign_hack
1343     neon_clobber_test
1344     pic
1345     pod2man
1346     texi2html
1347     thumb
1348     valgrind_backtrace
1349     xmm_clobber_test
1350 "
1351
1352 THREADS_LIST="
1353     pthreads
1354     w32threads
1355 "
1356
1357 ATOMICS_LIST="
1358     atomics_gcc
1359     atomics_suncc
1360     atomics_win32
1361 "
1362
1363 ARCH_LIST="
1364     aarch64
1365     alpha
1366     arm
1367     avr32
1368     avr32_ap
1369     avr32_uc
1370     bfin
1371     ia64
1372     m68k
1373     mips
1374     mips64
1375     parisc
1376     ppc
1377     ppc64
1378     s390
1379     sh4
1380     sparc
1381     sparc64
1382     tilegx
1383     tilepro
1384     tomi
1385     x86
1386     x86_32
1387     x86_64
1388 "
1389
1390 ARCH_EXT_LIST_ARM="
1391     armv5te
1392     armv6
1393     armv6t2
1394     armv8
1395     neon
1396     vfp
1397     vfpv3
1398 "
1399
1400 ARCH_EXT_LIST_X86_SIMD="
1401     amd3dnow
1402     amd3dnowext
1403     avx
1404     avx2
1405     fma3
1406     fma4
1407     mmx
1408     mmxext
1409     sse
1410     sse2
1411     sse3
1412     sse4
1413     sse42
1414     ssse3
1415     xop
1416 "
1417
1418 ARCH_EXT_LIST_PPC="
1419     altivec
1420     dcbzl
1421     ldbrx
1422     power8
1423     ppc4xx
1424     vsx
1425 "
1426
1427 ARCH_EXT_LIST_X86="
1428     $ARCH_EXT_LIST_X86_SIMD
1429     cpunop
1430     i686
1431 "
1432
1433 ARCH_EXT_LIST_MIPS="
1434     loongson
1435     mips32r1
1436     mips64r1
1437     mips32r2
1438     mips64r2
1439     mips32r6
1440     mips64r6
1441 "
1442
1443 ARCH_EXT_LIST="
1444     $ARCH_EXT_LIST_ARM
1445     $ARCH_EXT_LIST_MIPS
1446     $ARCH_EXT_LIST_PPC
1447     $ARCH_EXT_LIST_X86
1448     vis
1449 "
1450
1451 ARCH_FEATURES="
1452     aligned_stack
1453     fast_64bit
1454     fast_clz
1455     fast_cmov
1456     local_aligned_8
1457     local_aligned_16
1458     simd_align_16
1459 "
1460
1461 BUILTIN_LIST="
1462     atomic_cas_ptr
1463     machine_rw_barrier
1464     MemoryBarrier
1465     mm_empty
1466     rdtsc
1467     sem_timedwait
1468     sync_val_compare_and_swap
1469 "
1470 HAVE_LIST_CMDLINE="
1471     inline_asm
1472     symver
1473     yasm
1474 "
1475
1476 HAVE_LIST_PUB="
1477     bigendian
1478     fast_unaligned
1479 "
1480
1481 HEADERS_LIST="
1482     AVFoundation_AVFoundation_h
1483     alsa_asoundlib_h
1484     altivec_h
1485     arpa_inet_h
1486     cdio_paranoia_h
1487     cdio_paranoia_paranoia_h
1488     dispatch_dispatch_h
1489     dev_bktr_ioctl_bt848_h
1490     dev_bktr_ioctl_meteor_h
1491     dev_ic_bt8xx_h
1492     dev_video_bktr_ioctl_bt848_h
1493     dev_video_meteor_ioctl_meteor_h
1494     direct_h
1495     dlfcn_h
1496     d3d11_h
1497     dxva_h
1498     gsm_h
1499     io_h
1500     mach_mach_time_h
1501     machine_ioctl_bt848_h
1502     machine_ioctl_meteor_h
1503     malloc_h
1504     poll_h
1505     sndio_h
1506     soundcard_h
1507     sys_mman_h
1508     sys_param_h
1509     sys_resource_h
1510     sys_select_h
1511     sys_soundcard_h
1512     sys_time_h
1513     sys_un_h
1514     sys_videoio_h
1515     unistd_h
1516     valgrind_valgrind_h
1517     windows_h
1518     winsock2_h
1519 "
1520
1521 INTRINSICS_LIST="
1522     intrinsics_neon
1523 "
1524
1525 MATH_FUNCS="
1526     atanf
1527     atan2f
1528     cbrtf
1529     cosf
1530     exp2
1531     exp2f
1532     expf
1533     isinf
1534     isnan
1535     ldexpf
1536     llrint
1537     llrintf
1538     log2
1539     log2f
1540     log10f
1541     lrint
1542     lrintf
1543     powf
1544     rint
1545     round
1546     roundf
1547     sinf
1548     trunc
1549     truncf
1550 "
1551
1552 SYSTEM_FUNCS="
1553     aligned_malloc
1554     clock_gettime
1555     closesocket
1556     CommandLineToArgvW
1557     CoTaskMemFree
1558     CryptGenRandom
1559     dlopen
1560     fcntl
1561     flt_lim
1562     fork
1563     getaddrinfo
1564     gethrtime
1565     getopt
1566     GetProcessAffinityMask
1567     GetProcessMemoryInfo
1568     GetProcessTimes
1569     getrusage
1570     GetSystemTimeAsFileTime
1571     gettimeofday
1572     gmtime_r
1573     inet_aton
1574     isatty
1575     jack_port_get_latency_range
1576     LoadLibrary
1577     localtime_r
1578     mach_absolute_time
1579     MapViewOfFile
1580     memalign
1581     mkstemp
1582     mmap
1583     mprotect
1584     nanosleep
1585     posix_memalign
1586     sched_getaffinity
1587     SetConsoleTextAttribute
1588     setmode
1589     setrlimit
1590     Sleep
1591     strerror_r
1592     sysconf
1593     sysctl
1594     usleep
1595     VirtualAlloc
1596 "
1597
1598 TOOLCHAIN_FEATURES="
1599     as_dn_directive
1600     as_func
1601     as_object_arch
1602     asm_mod_q
1603     attribute_may_alias
1604     attribute_packed
1605     ebp_available
1606     ebx_available
1607     gnu_as
1608     ibm_asm
1609     inline_asm_labels
1610     pragma_deprecated
1611     symver_asm_label
1612     symver_gnu_asm
1613     vfp_args
1614     xform_asm
1615     xmm_clobbers
1616 "
1617
1618 TYPES_LIST="
1619     CONDITION_VARIABLE_Ptr
1620     socklen_t
1621     struct_addrinfo
1622     struct_group_source_req
1623     struct_ip_mreq_source
1624     struct_ipv6_mreq
1625     struct_pollfd
1626     struct_rusage_ru_maxrss
1627     struct_sockaddr_in6
1628     struct_sockaddr_sa_len
1629     struct_sockaddr_storage
1630     struct_v4l2_frmivalenum_discrete
1631 "
1632
1633 HAVE_LIST="
1634     $ARCH_EXT_LIST
1635     $(add_suffix _external $ARCH_EXT_LIST)
1636     $(add_suffix _inline   $ARCH_EXT_LIST)
1637     $ARCH_FEATURES
1638     $ATOMICS_LIST
1639     $BUILTIN_LIST
1640     $HAVE_LIST_CMDLINE
1641     $HAVE_LIST_PUB
1642     $HEADERS_LIST
1643     $INTRINSICS_LIST
1644     $MATH_FUNCS
1645     $SYSTEM_FUNCS
1646     $THREADS_LIST
1647     $TOOLCHAIN_FEATURES
1648     $TYPES_LIST
1649     atomics_native
1650     dos_paths
1651     dxva2_lib
1652     libc_msvcrt
1653     libdc1394_1
1654     libdc1394_2
1655     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1656     sdl
1657     section_data_rel_ro
1658     threads
1659     vaapi_drm
1660     vaapi_x11
1661     vdpau_x11
1662     xlib
1663 "
1664
1665 # options emitted with CONFIG_ prefix but not available on the command line
1666 CONFIG_EXTRA="
1667     aandcttables
1668     ac3dsp
1669     audio_frame_queue
1670     audiodsp
1671     blockdsp
1672     bswapdsp
1673     cabac
1674     dirac_parse
1675     dvprofile
1676     faandct
1677     faanidct
1678     fdctdsp
1679     flacdsp
1680     fmtconvert
1681     g722dsp
1682     gcrypt
1683     gmp
1684     golomb
1685     gplv3
1686     h263dsp
1687     h264chroma
1688     h264dsp
1689     h264pred
1690     h264qpel
1691     hpeldsp
1692     huffman
1693     huffyuvdsp
1694     huffyuvencdsp
1695     idctdsp
1696     iirfilter
1697     imdct15
1698     intrax8
1699     iso_media
1700     ividsp
1701     jpegtables
1702     libx262
1703     lgplv3
1704     lpc
1705     lzf
1706     me_cmp
1707     mpeg_er
1708     mpegaudio
1709     mpegaudiodsp
1710     mpegvideo
1711     mpegvideoenc
1712     mss34dsp
1713     pixblockdsp
1714     qpeldsp
1715     qsv
1716     qsvdec
1717     qsvenc
1718     rangecoder
1719     riffdec
1720     riffenc
1721     rtpdec
1722     rtpenc_chain
1723     rv34dsp
1724     sinewin
1725     snappy
1726     srtp
1727     startcode
1728     texturedsp
1729     texturedspenc
1730     tpeldsp
1731     vaapi_encode
1732     vc1dsp
1733     videodsp
1734     vp3dsp
1735     vp56dsp
1736     vp8dsp
1737     wma_freqs
1738     wmv2dsp
1739 "
1740
1741 CMDLINE_SELECT="
1742     $ARCH_EXT_LIST
1743     $CONFIG_LIST
1744     $HAVE_LIST_CMDLINE
1745     $THREADS_LIST
1746     asm
1747     cross_compile
1748     debug
1749     extra_warnings
1750     logging
1751     lto
1752     optimizations
1753     rpath
1754 "
1755
1756 PATHS_LIST="
1757     bindir
1758     datadir
1759     docdir
1760     incdir
1761     libdir
1762     mandir
1763     prefix
1764     shlibdir
1765 "
1766
1767 CMDLINE_SET="
1768     $PATHS_LIST
1769     ar
1770     arch
1771     as
1772     build_suffix
1773     cc
1774     objcc
1775     cpu
1776     cross_prefix
1777     custom_allocator
1778     dep_cc
1779     env
1780     extra_version
1781     host_cc
1782     host_cflags
1783     host_ld
1784     host_ldflags
1785     host_libs
1786     host_os
1787     ld
1788     logfile
1789     malloc_prefix
1790     nm
1791     optflags
1792     pkg_config
1793     pkg_config_flags
1794     random_seed
1795     samples
1796     sysinclude
1797     sysroot
1798     target_exec
1799     target_os
1800     target_path
1801     target_samples
1802     toolchain
1803 "
1804
1805 CMDLINE_APPEND="
1806     extra_cflags
1807     extra_objcflags
1808     host_cppflags
1809 "
1810
1811 # code dependency declarations
1812
1813 # architecture extensions
1814
1815 armv5te_deps="arm"
1816 armv6_deps="arm"
1817 armv6t2_deps="arm"
1818 armv8_deps="aarch64"
1819 neon_deps_any="aarch64 arm"
1820 intrinsics_neon_deps="neon"
1821 vfp_deps_any="aarch64 arm"
1822 vfpv3_deps="vfp"
1823
1824 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1825
1826 altivec_deps="ppc"
1827 ppc4xx_deps="ppc"
1828 vsx_deps="altivec"
1829 power8_deps="vsx"
1830
1831 cpunop_deps="i686"
1832 x86_64_select="i686"
1833 x86_64_suggest="fast_cmov"
1834
1835 amd3dnow_deps="mmx"
1836 amd3dnowext_deps="amd3dnow"
1837 i686_deps="x86"
1838 mmx_deps="x86"
1839 mmxext_deps="mmx"
1840 sse_deps="mmxext"
1841 sse2_deps="sse"
1842 sse3_deps="sse2"
1843 ssse3_deps="sse3"
1844 sse4_deps="ssse3"
1845 sse42_deps="sse4"
1846 avx_deps="sse42"
1847 xop_deps="avx"
1848 fma3_deps="avx"
1849 fma4_deps="avx"
1850 avx2_deps="avx"
1851
1852 mmx_external_deps="yasm"
1853 mmx_inline_deps="inline_asm"
1854 mmx_suggest="mmx_external mmx_inline"
1855
1856 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1857     eval dep=\$${ext}_deps
1858     eval ${ext}_external_deps='"${dep}_external"'
1859     eval ${ext}_inline_deps='"${dep}_inline"'
1860     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1861 done
1862
1863 aligned_stack_if_any="aarch64 ppc x86"
1864 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1865 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1866 fast_unaligned_if_any="aarch64 ppc x86"
1867 simd_align_16_if_any="altivec neon sse"
1868
1869 # system capabilities
1870 symver_if_any="symver_asm_label symver_gnu_asm"
1871 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1872
1873 # threading support
1874 atomics_gcc_if="sync_val_compare_and_swap"
1875 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1876 atomics_win32_if="MemoryBarrier"
1877 atomics_native_if_any="$ATOMICS_LIST"
1878 w32threads_deps="atomics_native"
1879 threads_if_any="$THREADS_LIST"
1880
1881 # subsystems
1882 dct_select="rdft"
1883 dirac_parse_select="golomb"
1884 error_resilience_select="me_cmp"
1885 faandct_deps="faan fdctdsp"
1886 faanidct_deps="faan idctdsp"
1887 h264dsp_select="startcode"
1888 intrax8_select="blockdsp idctdsp"
1889 mdct_select="fft"
1890 rdft_select="fft"
1891 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1892 mpeg_er_select="error_resilience"
1893 mpegaudio_select="mpegaudiodsp"
1894 mpegaudiodsp_select="dct"
1895 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1896 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1897 vc1dsp_select="h264chroma qpeldsp startcode"
1898
1899 # decoders / encoders
1900 aac_decoder_select="imdct15 mdct sinewin"
1901 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1902 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1903 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1904 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1905 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1906 adpcm_g722_decoder_select="g722dsp"
1907 adpcm_g722_encoder_select="g722dsp"
1908 aic_decoder_select="golomb idctdsp"
1909 alac_encoder_select="lpc"
1910 als_decoder_select="bswapdsp"
1911 amrnb_decoder_select="lsp"
1912 amrwb_decoder_select="lsp"
1913 amv_decoder_select="sp5x_decoder"
1914 ape_decoder_select="bswapdsp"
1915 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1916 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1917 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1918 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1919 atrac1_decoder_select="mdct sinewin"
1920 atrac3_decoder_select="mdct"
1921 atrac3p_decoder_select="mdct sinewin"
1922 bink_decoder_select="blockdsp hpeldsp"
1923 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1924 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1925 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1926 cllc_decoder_select="bswapdsp"
1927 comfortnoise_encoder_select="lpc"
1928 cook_decoder_select="audiodsp mdct sinewin"
1929 cscd_decoder_select="lzo"
1930 cscd_decoder_suggest="zlib"
1931 dca_decoder_select="fmtconvert mdct"
1932 dds_decoder_select="texturedsp"
1933 dnxhd_decoder_select="blockdsp idctdsp"
1934 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1935 dvvideo_decoder_select="dvprofile idctdsp"
1936 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1937 dxa_decoder_deps="zlib"
1938 dxv_decoder_select="lzf texturedsp"
1939 eac3_decoder_select="ac3_decoder"
1940 eac3_encoder_select="ac3_encoder"
1941 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1942 eatgq_decoder_select="aandcttables idctdsp"
1943 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
1944 exr_decoder_deps="zlib"
1945 ffv1_decoder_select="golomb rangecoder"
1946 ffv1_encoder_select="rangecoder"
1947 ffvhuff_decoder_select="huffyuv_decoder"
1948 ffvhuff_encoder_select="huffyuv_encoder"
1949 fic_decoder_select="golomb"
1950 flac_decoder_select="flacdsp golomb"
1951 flac_encoder_select="bswapdsp flacdsp golomb lpc"
1952 flashsv_decoder_deps="zlib"
1953 flashsv_encoder_deps="zlib"
1954 flashsv2_decoder_deps="zlib"
1955 flv_decoder_select="h263_decoder"
1956 flv_encoder_select="h263_encoder"
1957 fourxm_decoder_select="blockdsp bswapdsp"
1958 fraps_decoder_select="bswapdsp huffman"
1959 g2m_decoder_deps="zlib"
1960 g2m_decoder_select="blockdsp idctdsp jpegtables"
1961 h261_decoder_select="mpeg_er mpegvideo"
1962 h261_encoder_select="aandcttables mpegvideoenc"
1963 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1964 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1965 h263i_decoder_select="h263_decoder"
1966 h263p_encoder_select="h263_encoder"
1967 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
1968 h264_decoder_suggest="error_resilience"
1969 hap_decoder_select="snappy texturedsp"
1970 hap_encoder_deps="libsnappy"
1971 hap_encoder_select="texturedspenc"
1972 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1973 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1974 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1975 iac_decoder_select="imc_decoder"
1976 imc_decoder_select="bswapdsp fft mdct sinewin"
1977 indeo3_decoder_select="hpeldsp"
1978 indeo4_decoder_select="ividsp"
1979 indeo5_decoder_select="ividsp"
1980 interplay_video_decoder_select="hpeldsp"
1981 jpegls_decoder_select="golomb mjpeg_decoder"
1982 jpegls_encoder_select="golomb"
1983 jv_decoder_select="blockdsp"
1984 lagarith_decoder_select="huffyuvdsp"
1985 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
1986 loco_decoder_select="golomb"
1987 magicyuv_decoder_select="huffyuvdsp"
1988 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1989 metasound_decoder_select="lsp mdct sinewin"
1990 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1991 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
1992 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
1993 mjpegb_decoder_select="mjpeg_decoder"
1994 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
1995 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
1996 mlp_decoder_select="mlp_parser"
1997 motionpixels_decoder_select="bswapdsp"
1998 mp1_decoder_select="mpegaudio"
1999 mp1float_decoder_select="mpegaudio"
2000 mp2_decoder_select="mpegaudio"
2001 mp2float_decoder_select="mpegaudio"
2002 mp3_decoder_select="mpegaudio"
2003 mp3adu_decoder_select="mpegaudio"
2004 mp3adufloat_decoder_select="mpegaudio"
2005 mp3float_decoder_select="mpegaudio"
2006 mp3on4_decoder_select="mpegaudio"
2007 mp3on4float_decoder_select="mpegaudio"
2008 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2009 mpc8_decoder_select="mpegaudiodsp"
2010 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2011 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2012 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2013 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2014 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2015 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2016 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2017 mpeg4_encoder_select="h263_encoder"
2018 msa1_decoder_select="mss34dsp"
2019 msmpeg4v1_decoder_select="h263_decoder"
2020 msmpeg4v2_decoder_select="h263_decoder"
2021 msmpeg4v2_encoder_select="h263_encoder"
2022 msmpeg4v3_decoder_select="h263_decoder"
2023 msmpeg4v3_encoder_select="h263_encoder"
2024 mss2_decoder_select="error_resilience mpeg_er mpegvideo vc1_decoder"
2025 mts2_decoder_select="mss34dsp"
2026 mxpeg_decoder_select="mjpeg_decoder"
2027 nellymoser_decoder_select="mdct sinewin"
2028 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2029 nuv_decoder_select="idctdsp lzo"
2030 on2avc_decoder_select="mdct"
2031 opus_decoder_deps="avresample"
2032 opus_decoder_select="imdct15"
2033 png_decoder_deps="zlib"
2034 png_encoder_deps="zlib"
2035 png_encoder_select="huffyuvencdsp"
2036 prores_decoder_select="idctdsp"
2037 prores_encoder_select="fdctdsp"
2038 qcelp_decoder_select="lsp"
2039 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2040 ra_144_encoder_select="audio_frame_queue lpc"
2041 ralf_decoder_select="golomb"
2042 rscc_decoder_deps="zlib"
2043 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2044 rv10_encoder_select="h263_encoder"
2045 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2046 rv20_encoder_select="h263_encoder"
2047 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2048 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2049 screenpresso_decoder_deps="zlib"
2050 shorten_decoder_select="golomb"
2051 sipr_decoder_select="lsp"
2052 sp5x_decoder_select="mjpeg_decoder"
2053 svq1_decoder_select="hpeldsp"
2054 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2055 svq3_decoder_select="golomb h264dsp h264pred hpeldsp tpeldsp videodsp"
2056 svq3_decoder_suggest="zlib"
2057 tak_decoder_select="audiodsp"
2058 tdsc_decoder_deps="zlib"
2059 tdsc_decoder_select="mjpeg_decoder"
2060 theora_decoder_select="vp3_decoder"
2061 thp_decoder_select="mjpeg_decoder"
2062 tiff_decoder_suggest="zlib"
2063 tiff_encoder_suggest="zlib"
2064 truehd_decoder_select="mlp_decoder"
2065 truemotion2_decoder_select="bswapdsp"
2066 truespeech_decoder_select="bswapdsp"
2067 tscc_decoder_deps="zlib"
2068 txd_decoder_select="texturedsp"
2069 twinvq_decoder_select="mdct lsp sinewin"
2070 utvideo_decoder_select="bswapdsp"
2071 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2072 vble_decoder_select="huffyuvdsp"
2073 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2074 vc1image_decoder_select="vc1_decoder"
2075 vorbis_decoder_select="mdct"
2076 vorbis_encoder_select="mdct"
2077 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2078 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2079 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2080 vp6a_decoder_select="vp6_decoder"
2081 vp6f_decoder_select="vp6_decoder"
2082 vp7_decoder_select="h264pred videodsp vp8dsp"
2083 vp8_decoder_select="h264pred videodsp vp8dsp"
2084 vp9_decoder_select="videodsp"
2085 webp_decoder_select="vp8_decoder"
2086 wmapro_decoder_select="mdct sinewin wma_freqs"
2087 wmav1_decoder_select="mdct sinewin wma_freqs"
2088 wmav1_encoder_select="mdct sinewin wma_freqs"
2089 wmav2_decoder_select="mdct sinewin wma_freqs"
2090 wmav2_encoder_select="mdct sinewin wma_freqs"
2091 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2092 wmv1_decoder_select="h263_decoder"
2093 wmv1_encoder_select="h263_encoder"
2094 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2095 wmv2_encoder_select="h263_encoder wmv2dsp"
2096 wmv3_decoder_select="vc1_decoder"
2097 wmv3image_decoder_select="wmv3_decoder"
2098 zerocodec_decoder_deps="zlib"
2099 zlib_decoder_deps="zlib"
2100 zlib_encoder_deps="zlib"
2101 zmbv_decoder_deps="zlib"
2102 zmbv_encoder_deps="zlib"
2103
2104 # hardware accelerators
2105 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2106 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2107 vaapi_deps="va_va_h"
2108 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2109 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2110 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2111
2112 h263_vaapi_hwaccel_deps="vaapi"
2113 h263_vaapi_hwaccel_select="h263_decoder"
2114 h264_d3d11va_hwaccel_deps="d3d11va"
2115 h264_d3d11va_hwaccel_select="h264_decoder"
2116 h264_dxva2_hwaccel_deps="dxva2"
2117 h264_dxva2_hwaccel_select="h264_decoder"
2118 h264_mmal_decoder_deps="mmal"
2119 h264_mmal_decoder_select="mmal"
2120 h264_mmal_hwaccel_deps="mmal"
2121 h264_omx_encoder_deps="omx"
2122 h264_qsv_hwaccel_deps="libmfx"
2123 h264_vaapi_hwaccel_deps="vaapi"
2124 h264_vaapi_hwaccel_select="h264_decoder"
2125 h264_vda_hwaccel_deps="vda"
2126 h264_vda_hwaccel_select="h264_decoder"
2127 h264_vda_old_hwaccel_deps="vda"
2128 h264_vda_old_hwaccel_select="h264_decoder"
2129 h264_vdpau_hwaccel_deps="vdpau"
2130 h264_vdpau_hwaccel_select="h264_decoder"
2131 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2132 hevc_d3d11va_hwaccel_select="hevc_decoder"
2133 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2134 hevc_dxva2_hwaccel_select="hevc_decoder"
2135 hevc_qsv_hwaccel_deps="libmfx"
2136 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2137 hevc_vdpau_hwaccel_select="hevc_decoder"
2138 mpeg1_vdpau_hwaccel_deps="vdpau"
2139 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2140 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2141 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2142 mpeg2_dxva2_hwaccel_deps="dxva2"
2143 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2144 mpeg2_mmal_decoder_deps="mmal"
2145 mpeg2_mmal_decoder_select="mmal"
2146 mpeg2_mmal_hwaccel_deps="mmal"
2147 mpeg2_qsv_hwaccel_deps="libmfx"
2148 mpeg2_vaapi_hwaccel_deps="vaapi"
2149 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2150 mpeg2_vdpau_hwaccel_deps="vdpau"
2151 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2152 mpeg4_omx_encoder_deps="omx"
2153 mpeg4_vaapi_hwaccel_deps="vaapi"
2154 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2155 mpeg4_vdpau_hwaccel_deps="vdpau"
2156 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2157 vc1_d3d11va_hwaccel_deps="d3d11va"
2158 vc1_d3d11va_hwaccel_select="vc1_decoder"
2159 vc1_dxva2_hwaccel_deps="dxva2"
2160 vc1_dxva2_hwaccel_select="vc1_decoder"
2161 vc1_mmal_decoder_deps="mmal"
2162 vc1_mmal_decoder_select="mmal"
2163 vc1_mmal_hwaccel_deps="mmal"
2164 vc1_vaapi_hwaccel_deps="vaapi"
2165 vc1_vaapi_hwaccel_select="vc1_decoder"
2166 vc1_vdpau_hwaccel_deps="vdpau"
2167 vc1_vdpau_hwaccel_select="vc1_decoder"
2168 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2169 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2170 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2171 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2172
2173 # hardware-accelerated codecs
2174 nvenc_deps_any="dlopen LoadLibrary"
2175 nvenc_extralibs='$ldl'
2176 omx_deps="dlopen pthreads"
2177 omx_extralibs='$ldl'
2178 qsvdec_select="qsv"
2179 qsvenc_select="qsv"
2180 vaapi_encode_deps="vaapi"
2181
2182 hwupload_cuda_filter_deps="cuda"
2183 scale_npp_filter_deps="cuda libnpp"
2184
2185 h264_nvenc_encoder_deps="nvenc"
2186 h264_qsv_decoder_deps="libmfx"
2187 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2188 h264_qsv_encoder_deps="libmfx"
2189 h264_qsv_encoder_select="qsvenc"
2190 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2191 h264_vaapi_encoder_select="vaapi_encode golomb"
2192
2193 hevc_nvenc_encoder_deps="nvenc"
2194 hevc_qsv_decoder_deps="libmfx"
2195 hevc_qsv_encoder_deps="libmfx"
2196 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2197 hevc_qsv_encoder_select="qsvenc"
2198 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2199 hevc_vaapi_encoder_select="vaapi_encode golomb"
2200 mpeg2_qsv_decoder_deps="libmfx"
2201 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2202 mpeg2_qsv_encoder_deps="libmfx"
2203 mpeg2_qsv_encoder_select="qsvenc"
2204
2205 nvenc_h264_encoder_deps="nvenc"
2206 nvenc_hevc_encoder_deps="nvenc"
2207
2208 # parsers
2209 h264_parser_select="golomb h264dsp"
2210 hevc_parser_select="golomb"
2211 mpegvideo_parser_select="mpegvideo"
2212 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2213 vc1_parser_select="vc1dsp"
2214
2215 # bitstream_filters
2216 mjpeg2jpeg_bsf_select="jpegtables"
2217
2218 # external libraries
2219 libdcadec_decoder_deps="libdcadec"
2220 libfaac_encoder_deps="libfaac"
2221 libfaac_encoder_select="audio_frame_queue"
2222 libfdk_aac_decoder_deps="libfdk_aac"
2223 libfdk_aac_encoder_deps="libfdk_aac"
2224 libfdk_aac_encoder_select="audio_frame_queue"
2225 libgsm_decoder_deps="libgsm"
2226 libgsm_encoder_deps="libgsm"
2227 libgsm_ms_decoder_deps="libgsm"
2228 libgsm_ms_encoder_deps="libgsm"
2229 libilbc_decoder_deps="libilbc"
2230 libilbc_encoder_deps="libilbc"
2231 libkvazaar_encoder_deps="libkvazaar"
2232 libmp3lame_encoder_deps="libmp3lame"
2233 libmp3lame_encoder_select="audio_frame_queue"
2234 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2235 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2236 libopencore_amrnb_encoder_select="audio_frame_queue"
2237 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2238 libopenh264_encoder_deps="libopenh264"
2239 libopenjpeg_decoder_deps="libopenjpeg"
2240 libopenjpeg_encoder_deps="libopenjpeg"
2241 libopus_decoder_deps="libopus"
2242 libopus_encoder_deps="libopus"
2243 libopus_encoder_select="audio_frame_queue"
2244 libschroedinger_decoder_deps="libschroedinger"
2245 libschroedinger_encoder_deps="libschroedinger"
2246 libspeex_decoder_deps="libspeex"
2247 libspeex_encoder_deps="libspeex"
2248 libspeex_encoder_select="audio_frame_queue"
2249 libtheora_encoder_deps="libtheora"
2250 libtwolame_encoder_deps="libtwolame"
2251 libvo_aacenc_encoder_deps="libvo_aacenc"
2252 libvo_aacenc_encoder_select="audio_frame_queue"
2253 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2254 libvorbis_encoder_deps="libvorbis"
2255 libvorbis_encoder_select="audio_frame_queue"
2256 libvpx_vp8_decoder_deps="libvpx"
2257 libvpx_vp8_encoder_deps="libvpx"
2258 libvpx_vp9_decoder_deps="libvpx"
2259 libvpx_vp9_encoder_deps="libvpx"
2260 libwavpack_encoder_deps="libwavpack"
2261 libwebp_encoder_deps="libwebp"
2262 libx262_encoder_deps="libx262"
2263 libx264_encoder_deps="libx264"
2264 libx265_encoder_deps="libx265"
2265 libxavs_encoder_deps="libxavs"
2266 libxvid_encoder_deps="libxvid"
2267
2268 # demuxers / muxers
2269 ac3_demuxer_select="ac3_parser"
2270 asf_demuxer_select="riffdec"
2271 asf_muxer_select="riffenc"
2272 asf_stream_muxer_select="asf_muxer"
2273 avi_demuxer_select="iso_media riffdec"
2274 avi_muxer_select="riffenc"
2275 avisynth_demuxer_deps="avisynth"
2276 avisynth_demuxer_select="riffdec"
2277 caf_demuxer_select="iso_media riffdec"
2278 dash_muxer_select="mp4_muxer"
2279 dirac_demuxer_select="dirac_parser"
2280 dv_demuxer_select="dvprofile"
2281 dv_muxer_select="dvprofile"
2282 dxa_demuxer_select="riffdec"
2283 eac3_demuxer_select="ac3_parser"
2284 f4v_muxer_select="mov_muxer"
2285 flac_demuxer_select="flac_parser"
2286 hds_muxer_select="flv_muxer"
2287 hls_muxer_select="mpegts_muxer"
2288 ipod_muxer_select="mov_muxer"
2289 ismv_muxer_select="mov_muxer"
2290 matroska_audio_muxer_select="matroska_muxer"
2291 matroska_demuxer_select="iso_media riffdec"
2292 matroska_demuxer_suggest="bzlib lzo zlib"
2293 matroska_muxer_select="iso_media riffenc"
2294 mmf_muxer_select="riffenc"
2295 mov_demuxer_select="iso_media riffdec"
2296 mov_demuxer_suggest="zlib"
2297 mov_muxer_select="iso_media riffenc rtpenc_chain"
2298 mp3_demuxer_select="mpegaudio_parser"
2299 mp4_muxer_select="mov_muxer"
2300 mpegts_demuxer_select="iso_media"
2301 mpegts_muxer_select="adts_muxer latm_muxer"
2302 mpegtsraw_demuxer_select="mpegts_demuxer"
2303 mxf_d10_muxer_select="mxf_muxer"
2304 nut_muxer_select="riffenc"
2305 nuv_demuxer_select="riffdec"
2306 oga_muxer_select="ogg_muxer"
2307 ogg_demuxer_select="dirac_parse"
2308 opus_muxer_select="ogg_muxer"
2309 psp_muxer_select="mov_muxer"
2310 rtp_demuxer_select="sdp_demuxer"
2311 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2312 rtsp_demuxer_select="http_protocol rtpdec"
2313 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2314 sap_demuxer_select="sdp_demuxer"
2315 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2316 sdp_demuxer_select="rtpdec"
2317 smoothstreaming_muxer_select="ismv_muxer"
2318 spdif_muxer_select="aac_parser"
2319 spx_muxer_select="ogg_muxer"
2320 swf_demuxer_suggest="zlib"
2321 tak_demuxer_select="tak_parser"
2322 tg2_muxer_select="mov_muxer"
2323 tgp_muxer_select="mov_muxer"
2324 w64_demuxer_select="wav_demuxer"
2325 wav_demuxer_select="riffdec"
2326 wav_muxer_select="riffenc"
2327 webm_muxer_select="iso_media riffenc"
2328 webm_muxer_suggest="libopus_encoder libvorbis_encoder libvpx_vp8_encoder libvpx_vp9_encoder"
2329 wtv_demuxer_select="mpegts_demuxer riffdec"
2330 xmv_demuxer_select="riffdec"
2331 xwma_demuxer_select="riffdec"
2332
2333 # indevs / outdevs
2334 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2335 alsa_outdev_deps="alsa_asoundlib_h"
2336 avfoundation_indev_deps="AVFoundation_AVFoundation_h"
2337 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2338 dv1394_indev_deps="dv1394"
2339 dv1394_indev_select="dv_demuxer"
2340 fbdev_indev_deps="linux_fb_h"
2341 jack_indev_deps="jack_jack_h"
2342 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2343 libcdio_indev_deps="libcdio"
2344 libdc1394_indev_deps="libdc1394"
2345 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2346 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2347 pulse_indev_deps="libpulse"
2348 sndio_indev_deps="sndio_h"
2349 sndio_outdev_deps="sndio_h"
2350 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2351 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2352 vfwcap_indev_extralibs="-lavicap32"
2353 x11grab_indev_deps="x11grab"
2354 x11grab_xcb_indev_deps="libxcb"
2355
2356 # protocols
2357 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2358 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2359 ffrtmpcrypt_protocol_select="tcp_protocol"
2360 ffrtmphttp_protocol_deps="!librtmp_protocol"
2361 ffrtmphttp_protocol_select="http_protocol"
2362 gopher_protocol_select="network"
2363 http_protocol_select="tcp_protocol"
2364 httpproxy_protocol_select="tcp_protocol"
2365 https_protocol_select="tls_protocol"
2366 icecast_protocol_select="http_protocol"
2367 librtmp_protocol_deps="librtmp"
2368 librtmpe_protocol_deps="librtmp"
2369 librtmps_protocol_deps="librtmp"
2370 librtmpt_protocol_deps="librtmp"
2371 librtmpte_protocol_deps="librtmp"
2372 mmsh_protocol_select="http_protocol"
2373 mmst_protocol_select="network"
2374 rtmp_protocol_deps="!librtmp_protocol"
2375 rtmp_protocol_select="tcp_protocol"
2376 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2377 rtmps_protocol_deps="!librtmp_protocol"
2378 rtmps_protocol_select="tls_protocol"
2379 rtmpt_protocol_select="ffrtmphttp_protocol"
2380 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2381 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2382 rtp_protocol_select="udp_protocol"
2383 sctp_protocol_deps="struct_sctp_event_subscribe"
2384 sctp_protocol_select="network"
2385 srtp_protocol_select="rtp_protocol srtp"
2386 tcp_protocol_select="network"
2387 tls_gnutls_protocol_deps="gnutls"
2388 tls_gnutls_protocol_select="tcp_protocol"
2389 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2390 tls_openssl_protocol_select="tcp_protocol"
2391 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2392 udp_protocol_select="network"
2393 unix_protocol_deps="sys_un_h"
2394 unix_protocol_select="network"
2395
2396 # filters
2397 blackframe_filter_deps="gpl"
2398 boxblur_filter_deps="gpl"
2399 bs2b_filter_deps="libbs2b"
2400 cropdetect_filter_deps="gpl"
2401 delogo_filter_deps="gpl"
2402 drawtext_filter_deps="libfreetype"
2403 frei0r_filter_deps="frei0r dlopen"
2404 frei0r_filter_extralibs='$ldl'
2405 frei0r_src_filter_deps="frei0r dlopen"
2406 frei0r_src_filter_extralibs='$ldl'
2407 hqdn3d_filter_deps="gpl"
2408 interlace_filter_deps="gpl"
2409 ocv_filter_deps="libopencv"
2410 resample_filter_deps="avresample"
2411 scale_filter_deps="swscale"
2412 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2413
2414 # examples
2415 avcodec_example_deps="avcodec avutil"
2416 filter_audio_example_deps="avfilter avutil"
2417 metadata_example_deps="avformat avutil"
2418 output_example_deps="avcodec avformat avutil swscale"
2419 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2420 transcode_aac_example_deps="avcodec avformat avresample"
2421
2422 # libraries, in linking order
2423 avcodec_deps="avutil"
2424 avdevice_deps="avformat avcodec avutil"
2425 avfilter_deps="avutil"
2426 avformat_deps="avcodec avutil"
2427 avresample_deps="avutil"
2428 swscale_deps="avutil"
2429
2430 # programs
2431 avconv_deps="avcodec avfilter avformat avresample swscale"
2432 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2433                fps_filter null_filter resample_filter scale_filter
2434                setpts_filter trim_filter"
2435 avplay_deps="avcodec avfilter avformat avresample sdl"
2436 avplay_libs='$sdl_libs'
2437 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2438 avprobe_deps="avcodec avformat"
2439
2440 # documentation
2441 pod2man_deps="doc"
2442 texi2html_deps="doc"
2443
2444 # default parameters
2445
2446 logfile="config.log"
2447
2448 # installation paths
2449 prefix_default="/usr/local"
2450 bindir_default='${prefix}/bin'
2451 datadir_default='${prefix}/share/avconv'
2452 docdir_default='${prefix}/share/doc/libav'
2453 incdir_default='${prefix}/include'
2454 libdir_default='${prefix}/lib'
2455 mandir_default='${prefix}/share/man'
2456 shlibdir_default="$libdir_default"
2457
2458 # toolchain
2459 ar_default="ar"
2460 cc_default="gcc"
2461 host_cc_default="gcc"
2462 cp_f="cp -f"
2463 ln_s="ln -s -f"
2464 nm_default="nm -g"
2465 objformat="elf"
2466 pkg_config_default=pkg-config
2467 ranlib="ranlib"
2468 strip="strip"
2469 version_script='--version-script'
2470 yasmexe="yasm"
2471
2472 # machine
2473 arch_default=$(uname -m)
2474 cpu="generic"
2475 intrinsics="none"
2476
2477 # OS
2478 target_os_default=$(tolower $(uname -s))
2479 host_os=$target_os_default
2480
2481 # configurable options
2482 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2483
2484 enable asm
2485 enable debug
2486 enable doc
2487 enable faan faandct faanidct
2488 enable optimizations
2489 enable safe_bitstream_reader
2490 enable static
2491 enable swscale_alpha
2492 enable valgrind_backtrace
2493
2494 # By default, enable only those hwaccels that have no external dependencies.
2495 enable d3d11va dxva2 vda vdpau
2496
2497 # build settings
2498 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2499 LIBPREF="lib"
2500 LIBSUF=".a"
2501 FULLNAME='$(NAME)$(BUILDSUF)'
2502 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2503 SLIBPREF="lib"
2504 SLIBSUF=".so"
2505 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2506 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2507 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2508 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2509 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2510 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2511 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2512
2513 asflags_filter=echo
2514 cflags_filter=echo
2515 ldflags_filter=echo
2516
2517 AS_C='-c'
2518 AS_O='-o $@'
2519 CC_C='-c'
2520 CC_E='-E -o $@'
2521 CC_O='-o $@'
2522 OBJCC_C='-c'
2523 OBJCC_E='-E -o $@'
2524 OBJCC_O='-o $@'
2525 LD_O='-o $@'
2526 LD_LIB='-l%'
2527 LD_PATH='-L'
2528 HOSTCC_C='-c'
2529 HOSTCC_E='-E -o $@'
2530 HOSTCC_O='-o $@'
2531 HOSTLD_O='-o $@'
2532
2533 host_libs='-lm'
2534 host_cflags_filter=echo
2535 host_ldflags_filter=echo
2536
2537 target_path='$(CURDIR)'
2538
2539 # since the object filename is not given with the -MM flag, the compiler
2540 # is only able to print the basename, and we must add the path ourselves
2541 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2542 DEPFLAGS='-MM'
2543
2544 # find source path
2545 if test -f configure; then
2546     source_path=.
2547 else
2548     source_path=$(cd $(dirname "$0"); pwd)
2549     echo "$source_path" | grep -q '[[:blank:]]' &&
2550         die "Out of tree builds are impossible with whitespace in source path."
2551     test -e "$source_path/config.h" &&
2552         die "Out of tree builds are impossible with config.h in source dir."
2553 fi
2554
2555 for v in "$@"; do
2556     r=${v#*=}
2557     l=${v%"$r"}
2558     r=$(sh_quote "$r")
2559     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2560 done
2561
2562 find_things(){
2563     thing=$1
2564     pattern=$2
2565     file=$source_path/$3
2566     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2567 }
2568
2569 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2570 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2571 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2572 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2573 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2574 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2575 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2576 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2577 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2578
2579 find_things_extern(){
2580     thing=$1
2581     pattern=$2
2582     file=$source_path/$3
2583     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2584 }
2585
2586 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2587 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2588
2589 ALL_COMPONENTS="
2590     $BSF_LIST
2591     $DECODER_LIST
2592     $DEMUXER_LIST
2593     $ENCODER_LIST
2594     $FILTER_LIST
2595     $HWACCEL_LIST
2596     $INDEV_LIST
2597     $MUXER_LIST
2598     $OUTDEV_LIST
2599     $PARSER_LIST
2600     $PROTOCOL_LIST
2601 "
2602
2603 for n in $COMPONENT_LIST; do
2604     v=$(toupper ${n%s})_LIST
2605     eval enable \$$v
2606     eval ${n}_if_any="\$$v"
2607 done
2608
2609 enable $ARCH_EXT_LIST
2610
2611 die_unknown(){
2612     echo "Unknown option \"$1\"."
2613     echo "See $0 --help for available options."
2614     exit 1
2615 }
2616
2617 print_3_columns() {
2618     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2619 }
2620
2621 show_list() {
2622     suffix=_$1
2623     shift
2624     echo $* | sed s/$suffix//g | print_3_columns
2625     exit 0
2626 }
2627
2628 rand_list(){
2629     IFS=', '
2630     set -- $*
2631     unset IFS
2632     for thing; do
2633         comp=${thing%:*}
2634         prob=${thing#$comp}
2635         prob=${prob#:}
2636         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2637         echo "prob ${prob:-0.5}"
2638         printf '%s\n' $comp
2639     done
2640 }
2641
2642 do_random(){
2643     action=$1
2644     shift
2645     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2646     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2647 }
2648
2649 for opt do
2650     optval="${opt#*=}"
2651     case "$opt" in
2652         --extra-ldflags=*)
2653             add_ldflags $optval
2654         ;;
2655         --extra-ldexeflags=*)
2656             add_ldexeflags $optval
2657         ;;
2658         --extra-libs=*)
2659             add_extralibs $optval
2660         ;;
2661         --disable-devices)
2662             disable $INDEV_LIST $OUTDEV_LIST
2663         ;;
2664         --enable-debug=*)
2665             debuglevel="$optval"
2666         ;;
2667         --disable-programs)
2668             disable $PROGRAM_LIST
2669         ;;
2670         --disable-everything)
2671             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2672         ;;
2673         --disable-all)
2674             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2675             disable $LIBRARY_LIST $PROGRAM_LIST doc
2676         ;;
2677         --enable-random|--disable-random)
2678             action=${opt%%-random}
2679             do_random ${action#--} $COMPONENT_LIST
2680         ;;
2681         --enable-random=*|--disable-random=*)
2682             action=${opt%%-random=*}
2683             do_random ${action#--} $optval
2684         ;;
2685         --enable-*=*|--disable-*=*)
2686             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2687             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2688             eval list=\$$(toupper $thing)_LIST
2689             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2690             $action $(filter "$name" $list)
2691         ;;
2692         --enable-avserver|--disable-avserver*)
2693             warn "avserver has been removed, the ${opt} option is only"\
2694                  "provided for compatibility and will be removed in the future"
2695         ;;
2696         --enable-?*|--disable-?*)
2697             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2698             if is_in $option $COMPONENT_LIST; then
2699                 test $action = disable && action=unset
2700                 eval $action \$$(toupper ${option%s})_LIST
2701             elif is_in $option $CMDLINE_SELECT; then
2702                 $action $option
2703             else
2704                 die_unknown $opt
2705             fi
2706         ;;
2707         --list-*)
2708             NAME="${opt#--list-}"
2709             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2710             NAME=${NAME%s}
2711             eval show_list $NAME \$$(toupper $NAME)_LIST
2712         ;;
2713         --help|-h) show_help
2714         ;;
2715         *)
2716             optname="${opt%%=*}"
2717             optname="${optname#--}"
2718             optname=$(echo "$optname" | sed 's/-/_/g')
2719             if is_in $optname $CMDLINE_SET; then
2720                 eval $optname='$optval'
2721             elif is_in $optname $CMDLINE_APPEND; then
2722                 append $optname "$optval"
2723             else
2724                 die_unknown $opt
2725             fi
2726         ;;
2727     esac
2728 done
2729
2730 for e in $env; do
2731     eval "export $e"
2732 done
2733
2734 disabled logging && logfile=/dev/null
2735
2736 # Disable all the library-specific components if the library itself
2737 # is disabled, see AVCODEC_LIST and following _LIST variables.
2738
2739 disable_components(){
2740     disabled ${1} && disable $(
2741         eval components="\$$(toupper ${1})_COMPONENTS"
2742         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2743     )
2744 }
2745
2746 map 'disable_components $v' $LIBRARY_LIST
2747
2748 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2749 set >> $logfile
2750
2751 case "$toolchain" in
2752     *-asan)
2753         cc_default="${toolchain%-asan}"
2754         add_cflags  -fsanitize=address
2755         add_ldflags -fsanitize=address
2756     ;;
2757     *-msan)
2758         cc_default="${toolchain%-msan}"
2759         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2760         add_ldflags -fsanitize=memory
2761     ;;
2762     *-tsan)
2763         cc_default="${toolchain%-tsan}"
2764         add_cflags  -fsanitize=thread -pie
2765         add_ldflags -fsanitize=thread -pie
2766         case "$toolchain" in
2767             gcc-tsan)
2768                 add_cflags  -fPIC
2769                 add_ldflags -fPIC
2770                 ;;
2771         esac
2772     ;;
2773     *-usan)
2774         cc_default="${toolchain%-usan}"
2775         add_cflags  -fsanitize=undefined
2776         add_ldflags -fsanitize=undefined
2777         case "$toolchain" in
2778             clang-usan)
2779                 add_cflags -O1
2780                 ;;
2781         esac
2782     ;;
2783     valgrind-*)
2784         target_exec_default="valgrind"
2785         case "$toolchain" in
2786             valgrind-massif)
2787                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2788                 ;;
2789             valgrind-memcheck)
2790                 target_exec_args="--track-origins=yes --leak-check=full"
2791                 ;;
2792         esac
2793     ;;
2794     msvc)
2795         # Check whether the current MSVC version needs the C99 converter.
2796         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2797         # support enough of C99 to build libav. Default to the new
2798         # behaviour if the regexp was unable to match anything, since this
2799         # successfully parses the version number of existing supported
2800         # versions that require the converter (MSVC 2010 and 2012).
2801         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2802         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2803             cc_default="cl"
2804         else
2805             cc_default="c99wrap cl"
2806         fi
2807         ld_default="$source_path/compat/windows/mslink"
2808         nm_default="dumpbin -symbols"
2809         ar_default="lib"
2810         case "$arch" in
2811         arm*)
2812             as_default="armasm"
2813             ;;
2814         esac
2815         target_os_default="win32"
2816         # Use a relative path for TMPDIR. This makes sure all the
2817         # ffconf temp files are written with a relative path, avoiding
2818         # issues with msys/win32 path conversion for MSVC parameters
2819         # such as -Fo<file> or -out:<file>.
2820         TMPDIR=.
2821     ;;
2822     icl)
2823         cc_default="icl"
2824         ld_default="xilink"
2825         nm_default="dumpbin -symbols"
2826         ar_default="xilib"
2827         target_os_default="win32"
2828         TMPDIR=.
2829     ;;
2830     gcov)
2831         add_cflags  -fprofile-arcs -ftest-coverage
2832         add_ldflags -fprofile-arcs -ftest-coverage
2833     ;;
2834     llvm-cov)
2835         add_cflags -fprofile-arcs -ftest-coverage
2836         add_ldflags --coverage
2837     ;;
2838     hardened)
2839         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2840         add_cflags   -fno-strict-overflow -fstack-protector-all
2841         add_ldflags  -Wl,-z,relro -Wl,-z,now
2842     ;;
2843     ?*)
2844         die "Unknown toolchain $toolchain"
2845     ;;
2846 esac
2847
2848 test -n "$cross_prefix" && enable cross_compile
2849
2850 if enabled cross_compile; then
2851     test -n "$arch" && test -n "$target_os" ||
2852         die "Must specify target arch and OS when cross-compiling"
2853 fi
2854
2855 ar_default="${cross_prefix}${ar_default}"
2856 cc_default="${cross_prefix}${cc_default}"
2857 occ_default="${cross_prefix}${occ_default}"
2858 nm_default="${cross_prefix}${nm_default}"
2859 pkg_config_default="${cross_prefix}${pkg_config_default}"
2860 ranlib="${cross_prefix}${ranlib}"
2861 strip="${cross_prefix}${strip}"
2862
2863 sysinclude_default="${sysroot}/usr/include"
2864
2865 set_default arch cc pkg_config sysinclude target_exec target_os
2866 enabled cross_compile || host_cc_default=$cc
2867 set_default host_cc
2868
2869 if ! $pkg_config --version >/dev/null 2>&1; then
2870     warn "$pkg_config not found, library detection may fail."
2871     pkg_config=false
2872 fi
2873
2874 exesuf() {
2875     case $1 in
2876         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2877     esac
2878 }
2879
2880 EXESUF=$(exesuf $target_os)
2881 HOSTEXESUF=$(exesuf $host_os)
2882
2883 # set temporary file name
2884 : ${TMPDIR:=$TEMPDIR}
2885 : ${TMPDIR:=$TMP}
2886 : ${TMPDIR:=/tmp}
2887
2888 if ! check_cmd mktemp -u XXXXXX; then
2889     # simple replacement for missing mktemp
2890     # NOT SAFE FOR GENERAL USE
2891     mktemp(){
2892         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2893     }
2894 fi
2895
2896 tmpfile(){
2897     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2898         (set -C; exec > $tmp) 2>/dev/null ||
2899         die "Unable to create temporary file in $TMPDIR."
2900     append TMPFILES $tmp
2901     eval $1=$tmp
2902 }
2903
2904 trap 'rm -f -- $TMPFILES' EXIT
2905
2906 tmpfile TMPASM .asm
2907 tmpfile TMPC   .c
2908 tmpfile TMPE   $EXESUF
2909 tmpfile TMPH   .h
2910 tmpfile TMPO   .o
2911 tmpfile TMPS   .S
2912 tmpfile TMPSH  .sh
2913 tmpfile TMPV   .ver
2914
2915 unset -f mktemp
2916
2917 chmod +x $TMPE
2918
2919 # make sure we can execute files in $TMPDIR
2920 cat > $TMPSH 2>> $logfile <<EOF
2921 #! /bin/sh
2922 EOF
2923 chmod +x $TMPSH >> $logfile 2>&1
2924 if ! $TMPSH >> $logfile 2>&1; then
2925     cat <<EOF
2926 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2927 variable to another directory and make sure that it is not mounted noexec.
2928 EOF
2929     die "Sanity test failed."
2930 fi
2931
2932 armasm_flags(){
2933     for flag; do
2934         case $flag in
2935             # Filter out MSVC cl.exe options from cflags that shouldn't
2936             # be passed to gas-preprocessor
2937             -M[TD]*)                                            ;;
2938             *)                  echo $flag                      ;;
2939         esac
2940    done
2941 }
2942
2943 ccc_flags(){
2944     for flag; do
2945         case $flag in
2946             -std=c99)           echo -c99                       ;;
2947             -mcpu=*)            echo -arch ${flag#*=}           ;;
2948             -mieee)             echo -ieee                      ;;
2949             -O*|-fast)          echo $flag                      ;;
2950             -fno-math-errno)    echo -assume nomath_errno       ;;
2951             -g)                 echo -g3                        ;;
2952             -Wall)              echo -msg_enable level2         ;;
2953             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2954             -Wl,*)              echo $flag                      ;;
2955             -f*|-W*)                                            ;;
2956             *)                  echo $flag                      ;;
2957         esac
2958    done
2959 }
2960
2961 cparser_flags(){
2962     for flag; do
2963         case $flag in
2964             -Wno-switch)             echo -Wno-switch-enum ;;
2965             -Wno-format-zero-length) ;;
2966             -Wdisabled-optimization) ;;
2967             -Wno-pointer-sign)       echo -Wno-other ;;
2968             *)                       echo $flag ;;
2969         esac
2970     done
2971 }
2972
2973 msvc_common_flags(){
2974     for flag; do
2975         case $flag in
2976             # In addition to specifying certain flags under the compiler
2977             # specific filters, they must be specified here as well or else the
2978             # generic catch all at the bottom will print the original flag.
2979             -Wall)                ;;
2980             -std=c99)             ;;
2981             # Common flags
2982             -fomit-frame-pointer) ;;
2983             -g)                   echo -Z7 ;;
2984             -fno-math-errno)      ;;
2985             -fno-common)          ;;
2986             -fno-signed-zeros)    ;;
2987             -fPIC)                ;;
2988             -mthumb)              ;;
2989             -march=*)             ;;
2990             -lz)                  echo zlib.lib ;;
2991             -lavifil32)           echo vfw32.lib ;;
2992             -lavicap32)           echo vfw32.lib user32.lib ;;
2993             -lx264)               echo libx264.lib ;;
2994             -l*)                  echo ${flag#-l}.lib ;;
2995             -L*)                  echo -libpath:${flag#-L} ;;
2996             *)                    echo $flag ;;
2997         esac
2998     done
2999 }
3000
3001 msvc_flags(){
3002     msvc_common_flags "$@"
3003     for flag; do
3004         case $flag in
3005             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3006                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3007                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3008                                        -wd4273 -wd4554 -wd4701 ;;
3009         esac
3010     done
3011 }
3012
3013 icl_flags(){
3014     msvc_common_flags "$@"
3015     for flag; do
3016         case $flag in
3017             # Despite what Intel's documentation says -Wall, which is supported
3018             # on Windows, does enable remarks so disable them here.
3019             -Wall)                echo $flag -Qdiag-disable:remark ;;
3020             -std=c99)             echo -Qstd=c99 ;;
3021         esac
3022     done
3023 }
3024
3025 pgi_flags(){
3026     for flag; do
3027         case $flag in
3028             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3029             -fomit-frame-pointer) echo -Mnoframe ;;
3030             -g)                   echo -gopt ;;
3031             *)                    echo $flag ;;
3032         esac
3033     done
3034 }
3035
3036 suncc_flags(){
3037     for flag; do
3038         case $flag in
3039             -march=*|-mcpu=*)
3040                 case "${flag#*=}" in
3041                     native)                   echo -xtarget=native       ;;
3042                     v9|niagara)               echo -xarch=sparc          ;;
3043                     ultrasparc)               echo -xarch=sparcvis       ;;
3044                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3045                     i586|pentium)             echo -xchip=pentium        ;;
3046                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3047                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3048                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3049                     pentium4*)          echo -xtarget=pentium4           ;;
3050                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3051                     *-sse3)             echo -xarch=sse3                 ;;
3052                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3053                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3054                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3055                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3056                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3057                     k8|opteron|athlon64|athlon-fx)
3058                                                echo -xarch=sse2a         ;;
3059                     athlon*)                   echo -xarch=pentium_proa  ;;
3060                 esac
3061                 ;;
3062             -std=c99)             echo -xc99              ;;
3063             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3064             -fPIC)                echo -KPIC -xcode=pic32 ;;
3065             -W*,*)                echo $flag              ;;
3066             -f*-*|-W*|-mimpure-text)                      ;;
3067             -shared)              echo -G                 ;;
3068             *)                    echo $flag              ;;
3069         esac
3070     done
3071 }
3072
3073 tms470_flags(){
3074     for flag; do
3075         case $flag in
3076             -march=*|-mcpu=*)
3077                 case "${flag#*=}" in
3078                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3079                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3080                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3081                     armv6*|arm11*)          echo -mv=6   ;;
3082                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3083                                             echo -mv=5e  ;;
3084                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3085                 esac
3086                 ;;
3087             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3088             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3089             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3090             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3091             -msoft-float)   echo --float_support=vfplib       ;;
3092             -O[0-3]|-mf=*)  echo $flag                        ;;
3093             -g)             echo -g -mn                       ;;
3094             -pds=*)         echo $flag                        ;;
3095             -D*|-I*)        echo $flag                        ;;
3096             --gcc|--abi=*)  echo $flag                        ;;
3097             -me)            echo $flag                        ;;
3098         esac
3099     done
3100 }
3101
3102 probe_cc(){
3103     pfx=$1
3104     _cc=$2
3105
3106     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3107     unset _ld_o _ldflags _ld_lib _ld_path
3108     unset _depflags _DEPCMD _DEPFLAGS
3109     _flags_filter=echo
3110
3111     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3112         _type=llvm_gcc
3113         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3114         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3115         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3116         _cflags_speed='-O3'
3117         _cflags_size='-Os'
3118     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3119         _type=gcc
3120         gcc_version=$($_cc --version | head -n1)
3121         gcc_basever=$($_cc -dumpversion)
3122         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3123         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3124         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3125         if ! $_cc -dumpversion | grep -q '^2\.'; then
3126             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3127         fi
3128         _cflags_speed='-O3'
3129         _cflags_size='-Os'
3130     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3131         _type=icc
3132         _ident=$($_cc --version | head -n1)
3133         _depflags='-MMD'
3134         _cflags_speed='-O3'
3135         _cflags_size='-Os'
3136         _cflags_noopt='-O1'
3137     elif $_cc -v 2>&1 | grep -q xlc; then
3138         _type=xlc
3139         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3140         _cflags_speed='-O5'
3141         _cflags_size='-O5 -qcompact'
3142     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3143         _type=ccc
3144         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3145         _DEPFLAGS='-M'
3146         _cflags_speed='-fast'
3147         _cflags_size='-O1'
3148         _flags_filter=ccc_flags
3149     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3150         test -d "$sysroot" || die "No valid sysroot specified."
3151         _type=armcc
3152         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3153         armcc_conf="$PWD/armcc.conf"
3154         $_cc --arm_linux_configure                 \
3155              --arm_linux_config_file="$armcc_conf" \
3156              --configure_sysroot="$sysroot"        \
3157              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3158              die "Error creating armcc configuration file."
3159         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3160         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3161         as_default="${cross_prefix}gcc"
3162         _depflags='-MMD'
3163         _cflags_speed='-O3'
3164         _cflags_size='-Os'
3165     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3166         _type=tms470
3167         _ident=$($_cc -version | head -n1 | tr -s ' ')
3168         _flags='--gcc --abi=eabi -me'
3169         _cc_e='-ppl -fe=$@'
3170         _cc_o='-fe=$@'
3171         _depflags='-ppa -ppd=$(@:.o=.d)'
3172         _cflags_speed='-O3 -mf=5'
3173         _cflags_size='-O3 -mf=2'
3174         _flags_filter=tms470_flags
3175     elif $_cc -v 2>&1 | grep -q clang; then
3176         _type=clang
3177         _ident=$($_cc --version 2>/dev/null | head -n1)
3178         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3179         _cflags_speed='-O3'
3180         _cflags_size='-Os'
3181     elif $_cc -V 2>&1 | grep -q Sun; then
3182         _type=suncc
3183         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3184         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3185         _DEPFLAGS='-xM1 -xc99'
3186         _ldflags='-std=c99'
3187         _cflags_speed='-O5'
3188         _cflags_size='-O5 -xspace'
3189         _flags_filter=suncc_flags
3190     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3191         _type=pathscale
3192         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3193         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3194         _cflags_speed='-O2'
3195         _cflags_size='-Os'
3196         _flags_filter='filter_out -Wdisabled-optimization'
3197     elif $_cc -v 2>&1 | grep -q Open64; then
3198         _type=open64
3199         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3200         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3201         _cflags_speed='-O2'
3202         _cflags_size='-Os'
3203         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3204     elif $_cc -V 2>&1 | grep -q Portland; then
3205         _type=pgi
3206         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3207         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3208         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3209         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3210         _cflags_noopt="-O1"
3211         _flags_filter=pgi_flags
3212     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3213         _type=armasm
3214         _ident=$($_cc | head -n1)
3215         # 4509: "This form of conditional instruction is deprecated"
3216         _flags="-nologo -ignore 4509"
3217         _flags_filter=armasm_flags
3218     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3219         _type=msvc
3220         _ident=$($_cc 2>&1 | head -n1)
3221         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3222         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3223         _cflags_speed="-O2"
3224         _cflags_size="-O1"
3225         if $_cc -nologo- 2>&1 | grep -q Linker; then
3226             _ld_o='-out:$@'
3227         else
3228             _ld_o='-Fe$@'
3229         fi
3230         _cc_o='-Fo$@'
3231         _cc_e='-P -Fi$@'
3232         _flags_filter=msvc_flags
3233         _ld_lib='lib%.a'
3234         _ld_path='-libpath:'
3235         _flags='-nologo'
3236         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3237     elif $_cc 2>&1 | grep -q Intel; then
3238         _type=icl
3239         _ident=$($_cc 2>&1 | head -n1)
3240         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3241         # Not only is O3 broken on 13.x+ but it is slower on all previous
3242         # versions (tested) as well.
3243         _cflags_speed="-O2"
3244         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3245         if $_cc 2>&1 | grep -q Linker; then
3246             _ld_o='-out:$@'
3247         else
3248             _ld_o='-Fe$@'
3249         fi
3250         _cc_o='-Fo$@'
3251         _cc_e='-P'
3252         _flags_filter=icl_flags
3253         _ld_lib='lib%.a'
3254         _ld_path='-libpath:'
3255         # -Qdiag-error to make icl error when seeing certain unknown arguments
3256         _flags='-nologo -Qdiag-error:4044,10157'
3257         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3258         # with MSVC which enables it by default.
3259         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS'
3260     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3261         _type=cparser
3262         _ident=$($_cc --version | head -n1)
3263         _depflags='-MMD'
3264         _cflags_speed='-O4'
3265         _cflags_size='-O2'
3266         _flags_filter=cparser_flags
3267     fi
3268
3269     eval ${pfx}_type=\$_type
3270     eval ${pfx}_ident=\$_ident
3271 }
3272
3273 set_ccvars(){
3274     eval ${1}_C=\${_cc_c-\${${1}_C}}
3275     eval ${1}_E=\${_cc_e-\${${1}_E}}
3276     eval ${1}_O=\${_cc_o-\${${1}_O}}
3277
3278     if [ -n "$_depflags" ]; then
3279         eval ${1}_DEPFLAGS=\$_depflags
3280     else
3281         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3282         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3283         eval DEP${1}FLAGS=\$_flags
3284     fi
3285 }
3286
3287 probe_cc cc "$cc"
3288 cflags_filter=$_flags_filter
3289 cflags_speed=$_cflags_speed
3290 cflags_size=$_cflags_size
3291 cflags_noopt=$_cflags_noopt
3292 add_cflags $_flags $_cflags
3293 cc_ldflags=$_ldflags
3294 set_ccvars CC
3295
3296 probe_cc hostcc "$host_cc"
3297 host_cflags_filter=$_flags_filter
3298 add_host_cflags  $_flags $_cflags
3299 set_ccvars HOSTCC
3300
3301 test -n "$cc_type" && enable $cc_type ||
3302     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3303
3304 : ${as_default:=$cc}
3305 : ${objcc_default:=$cc}
3306 : ${dep_cc_default:=$cc}
3307 : ${ld_default:=$cc}
3308 : ${host_ld_default:=$host_cc}
3309 set_default ar as objcc dep_cc ld host_ld
3310
3311 probe_cc as "$as"
3312 asflags_filter=$_flags_filter
3313 add_asflags $_flags $_cflags
3314 set_ccvars AS
3315
3316 probe_cc objcc "$objcc"
3317 objcflags_filter=$_flags_filter
3318 add_objcflags $_flags $_cflags
3319 set_ccvars OBJC
3320
3321 probe_cc ld "$ld"
3322 ldflags_filter=$_flags_filter
3323 add_ldflags $_flags $_ldflags
3324 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3325 LD_O=${_ld_o-$LD_O}
3326 LD_LIB=${_ld_lib-$LD_LIB}
3327 LD_PATH=${_ld_path-$LD_PATH}
3328
3329 probe_cc hostld "$host_ld"
3330 host_ldflags_filter=$_flags_filter
3331 add_host_ldflags $_flags $_ldflags
3332 HOSTLD_O=${_ld_o-$HOSTLD_O}
3333
3334 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3335     probe_cc depcc "$dep_cc"
3336     CCDEP=${_DEPCMD:-$DEPCMD}
3337     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3338     DEPCCFLAGS=$_flags
3339 fi
3340
3341 if $ar 2>&1 | grep -q Microsoft; then
3342     arflags="-nologo"
3343     ar_o='-out:$@'
3344 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3345     arflags="rq"
3346     ar_o='$@'
3347 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3348     arflags='-Xany -r -c'
3349     ar_o='$@'
3350 else
3351     arflags="rc"
3352     ar_o='$@'
3353 fi
3354
3355 add_cflags $extra_cflags
3356 add_objcflags $extra_objcflags
3357 add_asflags $extra_cflags
3358
3359 if test -n "$sysroot"; then
3360     case "$cc_type" in
3361         gcc|llvm_gcc|clang)
3362             add_cppflags --sysroot="$sysroot"
3363             add_ldflags --sysroot="$sysroot"
3364         ;;
3365         tms470)
3366             add_cppflags -I"$sysinclude"
3367             add_ldflags  --sysroot="$sysroot"
3368         ;;
3369     esac
3370 fi
3371
3372 if test "$cpu" = host; then
3373     enabled cross_compile &&
3374         die "--cpu=host makes no sense when cross-compiling."
3375
3376     case "$cc_type" in
3377         gcc|llvm_gcc)
3378             check_native(){
3379                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3380                 sed -n "/cc1.*$1=/{
3381                             s/.*$1=\\([^ ]*\\).*/\\1/
3382                             p
3383                             q
3384                         }" $TMPE
3385             }
3386             cpu=$(check_native -march || check_native -mcpu)
3387         ;;
3388     esac
3389
3390     test "${cpu:-host}" = host &&
3391         die "--cpu=host not supported with compiler $cc"
3392 fi
3393
3394 # Deal with common $arch aliases
3395 case "$arch" in
3396     aarch64|arm64)
3397         arch="aarch64"
3398     ;;
3399     arm*)
3400         arch="arm"
3401     ;;
3402     mips*|IP*)
3403         case "$arch" in
3404         *el)
3405             add_cppflags -EL
3406             add_ldflags -EL
3407         ;;
3408         *eb)
3409             add_cppflags -EB
3410             add_ldflags -EB
3411         ;;
3412         esac
3413         arch="mips"
3414     ;;
3415     parisc*|hppa*)
3416         arch="parisc"
3417     ;;
3418     "Power Macintosh"|ppc*|powerpc*)
3419         arch="ppc"
3420     ;;
3421     s390|s390x)
3422         arch="s390"
3423     ;;
3424     sh4|sh)
3425         arch="sh4"
3426     ;;
3427     sun4u|sparc*)
3428         arch="sparc"
3429     ;;
3430     tilegx|tile-gx)
3431         arch="tilegx"
3432     ;;
3433     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3434         arch="x86"
3435     ;;
3436 esac
3437
3438 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3439 enable $arch
3440
3441 # Add processor-specific flags
3442 if enabled aarch64; then
3443
3444     case $cpu in
3445         armv*)
3446             cpuflags="-march=$cpu"
3447         ;;
3448         *)
3449             cpuflags="-mcpu=$cpu"
3450         ;;
3451     esac
3452
3453 elif enabled alpha; then
3454
3455     cpuflags="-mcpu=$cpu"
3456
3457 elif enabled arm; then
3458
3459     check_arm_arch() {
3460         check_cpp_condition stddef.h \
3461             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3462             $cpuflags
3463     }
3464
3465     probe_arm_arch() {
3466         if   check_arm_arch 4;        then echo armv4
3467         elif check_arm_arch 4T;       then echo armv4t
3468         elif check_arm_arch 5;        then echo armv5
3469         elif check_arm_arch 5E;       then echo armv5e
3470         elif check_arm_arch 5T;       then echo armv5t
3471         elif check_arm_arch 5TE;      then echo armv5te
3472         elif check_arm_arch 5TEJ;     then echo armv5te
3473         elif check_arm_arch 6;        then echo armv6
3474         elif check_arm_arch 6J;       then echo armv6j
3475         elif check_arm_arch 6K;       then echo armv6k
3476         elif check_arm_arch 6Z;       then echo armv6z
3477         elif check_arm_arch 6ZK;      then echo armv6zk
3478         elif check_arm_arch 6T2;      then echo armv6t2
3479         elif check_arm_arch 7;        then echo armv7
3480         elif check_arm_arch 7A  7_A;  then echo armv7-a
3481         elif check_arm_arch 7S;       then echo armv7-a
3482         elif check_arm_arch 7R  7_R;  then echo armv7-r
3483         elif check_arm_arch 7M  7_M;  then echo armv7-m
3484         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3485         elif check_arm_arch 8A  8_A;  then echo armv8-a
3486         fi
3487     }
3488
3489     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3490
3491     case $cpu in
3492         armv*)
3493             cpuflags="-march=$cpu"
3494             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3495         ;;
3496         *)
3497             cpuflags="-mcpu=$cpu"
3498             case $cpu in
3499                 cortex-a*)                               subarch=armv7a  ;;
3500                 cortex-r*)                               subarch=armv7r  ;;
3501                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3502                 arm11*)                                  subarch=armv6   ;;
3503                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3504                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3505                 *)                             subarch=$(probe_arm_arch) ;;
3506             esac
3507         ;;
3508     esac
3509
3510     case "$subarch" in
3511         armv5t*)    enable fast_clz                ;;
3512         armv[6-8]*) enable fast_clz fast_unaligned ;;
3513     esac
3514
3515 elif enabled avr32; then
3516
3517     case $cpu in
3518         ap7[02]0[0-2])
3519             subarch="avr32_ap"
3520             cpuflags="-mpart=$cpu"
3521         ;;
3522         ap)
3523             subarch="avr32_ap"
3524             cpuflags="-march=$cpu"
3525         ;;
3526         uc3[ab]*)
3527             subarch="avr32_uc"
3528             cpuflags="-mcpu=$cpu"
3529         ;;
3530         uc)
3531             subarch="avr32_uc"
3532             cpuflags="-march=$cpu"
3533         ;;
3534     esac
3535
3536 elif enabled bfin; then
3537
3538     cpuflags="-mcpu=$cpu"
3539
3540 elif enabled mips; then
3541
3542     cpuflags="-march=$cpu"
3543
3544 elif enabled ppc; then
3545
3546     disable ldbrx
3547
3548     case $(tolower $cpu) in
3549         601|ppc601|powerpc601)
3550             cpuflags="-mcpu=601"
3551             disable altivec
3552         ;;
3553         603*|ppc603*|powerpc603*)
3554             cpuflags="-mcpu=603"
3555             disable altivec
3556         ;;
3557         604*|ppc604*|powerpc604*)
3558             cpuflags="-mcpu=604"
3559             disable altivec
3560         ;;
3561         g3|75*|ppc75*|powerpc75*)
3562             cpuflags="-mcpu=750"
3563             disable altivec
3564         ;;
3565         g4|745*|ppc745*|powerpc745*)
3566             cpuflags="-mcpu=7450"
3567             disable vsx
3568         ;;
3569         74*|ppc74*|powerpc74*)
3570             cpuflags="-mcpu=7400"
3571             disable vsx
3572         ;;
3573         g5|970|ppc970|powerpc970)
3574             cpuflags="-mcpu=970"
3575             disable vsx
3576         ;;
3577         power[3-6]*)
3578             cpuflags="-mcpu=$cpu"
3579             disable vsx
3580         ;;
3581         power[7-8]*)
3582             cpuflags="-mcpu=$cpu"
3583             enable ldbrx
3584         ;;
3585         cell)
3586             cpuflags="-mcpu=cell"
3587             enable ldbrx
3588             disable vsx
3589         ;;
3590         e500mc)
3591             cpuflags="-mcpu=e500mc"
3592             disable altivec
3593         ;;
3594         e500v2)
3595             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3596             disable altivec
3597             disable dcbzl
3598         ;;
3599         e500)
3600             cpuflags="-mcpu=8540 -mhard-float"
3601             disable altivec
3602             disable dcbzl
3603         ;;
3604     esac
3605
3606 elif enabled sparc; then
3607
3608     case $cpu in
3609         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3610             cpuflags="-mcpu=$cpu"
3611         ;;
3612         ultrasparc*|niagara[234])
3613             cpuflags="-mcpu=$cpu"
3614         ;;
3615     esac
3616
3617 elif enabled x86; then
3618
3619     case $cpu in
3620         i[345]86|pentium)
3621             cpuflags="-march=$cpu"
3622             disable i686
3623             disable mmx
3624         ;;
3625         # targets that do NOT support nopl and conditional mov (cmov)
3626         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3627             cpuflags="-march=$cpu"
3628             disable i686
3629         ;;
3630         # targets that do support nopl and conditional mov (cmov)
3631         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3632             cpuflags="-march=$cpu"
3633             enable i686
3634             enable fast_cmov
3635         ;;
3636         # targets that do support conditional mov but on which it's slow
3637         pentium4|pentium4m|prescott|nocona)
3638             cpuflags="-march=$cpu"
3639             enable i686
3640             disable fast_cmov
3641         ;;
3642     esac
3643
3644 fi
3645
3646 if [ "$cpu" != generic ]; then
3647     add_cflags  $cpuflags
3648     add_asflags $cpuflags
3649     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3650 fi
3651
3652 # compiler sanity check
3653 check_exec <<EOF
3654 int main(void){ return 0; }
3655 EOF
3656 if test "$?" != 0; then
3657     echo "$cc is unable to create an executable file."
3658     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3659         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3660         echo "Only do this if you know what cross compiling means."
3661     fi
3662     die "C compiler test failed."
3663 fi
3664
3665 add_cppflags -D_ISOC99_SOURCE
3666 check_cflags -std=c99
3667 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3668 #include <stdlib.h>
3669 EOF
3670 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3671 #include <stdlib.h>
3672 EOF
3673
3674 add_host_cppflags -D_ISOC99_SOURCE
3675 check_host_cflags -std=c99
3676 check_host_cflags -Wall
3677 check_host_cflags -O3
3678
3679 check_64bit(){
3680     arch32=$1
3681     arch64=$2
3682     expr=$3
3683     check_code cc "" "int test[2*($expr) - 1]" &&
3684         subarch=$arch64 || subarch=$arch32
3685 }
3686
3687 case "$arch" in
3688     aarch64|alpha|ia64)
3689         spic=$shared
3690     ;;
3691     mips)
3692         check_64bit mips mips64 '_MIPS_SIM > 1'
3693         spic=$shared
3694     ;;
3695     parisc)
3696         check_64bit parisc parisc64 'sizeof(void *) > 4'
3697         spic=$shared
3698     ;;
3699     ppc)
3700         check_64bit ppc ppc64 'sizeof(void *) > 4'
3701         spic=$shared
3702     ;;
3703     s390)
3704         check_64bit s390 s390x 'sizeof(void *) > 4'
3705         spic=$shared
3706     ;;
3707     sparc)
3708         check_64bit sparc sparc64 'sizeof(void *) > 4'
3709         spic=$shared
3710     ;;
3711     x86)
3712         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3713         if test "$subarch" = "x86_64"; then
3714             spic=$shared
3715         fi
3716     ;;
3717 esac
3718
3719 enable $subarch
3720 enabled spic && enable_weak pic
3721
3722 # OS specific
3723 case $target_os in
3724     aix)
3725         SHFLAGS=-shared
3726         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3727         enabled shared && add_ldflags -Wl,-brtl
3728         ;;
3729     android)
3730         disable symver
3731         enable section_data_rel_ro
3732         SLIB_INSTALL_NAME='$(SLIBNAME)'
3733         SLIB_INSTALL_LINKS=
3734         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3735         ;;
3736     haiku)
3737         prefix_default="/boot/common"
3738         network_extralibs="-lnetwork"
3739         host_libs=
3740         ;;
3741     sunos)
3742         SHFLAGS='-shared -Wl,-h,$$(@F)'
3743         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3744         network_extralibs="-lsocket -lnsl"
3745         # When using suncc to build, the Solaris linker will mark
3746         # an executable with each instruction set encountered by
3747         # the Solaris assembler.  As our libraries contain their own
3748         # guards for processor-specific code, instead suppress
3749         # generation of the HWCAPS ELF section on Solaris x86 only.
3750         enabled_all suncc x86 &&
3751             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3752             add_ldflags -Wl,-M,mapfile
3753         nm_default='nm -P -g'
3754         version_script='-M'
3755         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3756         ;;
3757     netbsd)
3758         disable symver
3759         oss_indev_extralibs="-lossaudio"
3760         oss_outdev_extralibs="-lossaudio"
3761         ;;
3762     openbsd|bitrig)
3763         disable symver
3764         SHFLAGS='-shared'
3765         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3766         SLIB_INSTALL_LINKS=
3767         oss_indev_extralibs="-lossaudio"
3768         oss_outdev_extralibs="-lossaudio"
3769         ;;
3770     dragonfly)
3771         disable symver
3772         ;;
3773     freebsd)
3774         ;;
3775     bsd/os)
3776         add_extralibs -lpoll -lgnugetopt
3777         ;;
3778     darwin)
3779         enabled ppc && add_asflags -force_cpusubtype_ALL
3780         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3781         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3782         add_ldflags -Wl,-dynamic,-search_paths_first
3783         SLIBSUF=".dylib"
3784         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3785         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3786         objformat="macho"
3787         enabled x86_64 && objformat="macho64"
3788         enabled_any pic shared ||
3789             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3790         check_header dispatch/dispatch.h &&
3791             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3792         ;;
3793     msys*)
3794         die "Native MSYS builds are discouraged, please use the MINGW environment."
3795         ;;
3796     mingw32*|mingw64*)
3797         if test $target_os = "mingw32ce"; then
3798             disable network
3799         else
3800             target_os=mingw32
3801         fi
3802         LIBTARGET=i386
3803         if enabled x86_64; then
3804             LIBTARGET="i386:x86-64"
3805         elif enabled arm; then
3806             LIBTARGET=arm-wince
3807         fi
3808         check_ldflags -Wl,--nxcompat
3809         check_ldflags -Wl,--dynamicbase
3810         shlibdir_default="$bindir_default"
3811         SLIBPREF=""
3812         SLIBSUF=".dll"
3813         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3814         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3815         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3816         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3817         SLIB_INSTALL_LINKS=
3818         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3819         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3820         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3821         objformat="win32"
3822         dlltool="${cross_prefix}dlltool"
3823         ranlib=:
3824         enable dos_paths
3825         ;;
3826     win32|win64)
3827         disable symver
3828         if enabled shared; then
3829             # Link to the import library instead of the normal static library
3830             # for shared libs.
3831             LD_LIB='%.lib'
3832             # Cannot build both shared and static libs with MSVC or icl.
3833             disable static
3834         fi
3835         shlibdir_default="$bindir_default"
3836         SLIBPREF=""
3837         SLIBSUF=".dll"
3838         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3839         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3840         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3841         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3842         SLIB_INSTALL_LINKS=
3843         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3844         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3845         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3846         objformat="win32"
3847         ranlib=:
3848         enable dos_paths
3849         ;;
3850     cygwin*)
3851         target_os=cygwin
3852         shlibdir_default="$bindir_default"
3853         SLIBPREF="cyg"
3854         SLIBSUF=".dll"
3855         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3856         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3857         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3858         SLIB_INSTALL_LINKS=
3859         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3860         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3861         objformat="win32"
3862         enable dos_paths
3863         ;;
3864     *-dos|freedos|opendos)
3865         network_extralibs="-lsocket"
3866         objformat="coff"
3867         enable dos_paths
3868         add_cppflags -U__STRICT_ANSI__
3869         ;;
3870     linux)
3871         enable dv1394
3872         enable section_data_rel_ro
3873         ;;
3874     irix*)
3875         target_os=irix
3876         ranlib="echo ignoring ranlib"
3877         ;;
3878     os/2*)
3879         ln_s="cp -f"
3880         objformat="aout"
3881         add_cppflags -D_GNU_SOURCE
3882         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3883         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3884         LIBSUF="_s.a"
3885         SLIBPREF=""
3886         SLIBSUF=".dll"
3887         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3888         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3889         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3890             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3891             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3892             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3893             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3894         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3895             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3896         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3897         enable dos_paths
3898         ;;
3899     gnu/kfreebsd)
3900         add_cppflags -D_BSD_SOURCE
3901         ;;
3902     gnu)
3903         ;;
3904     qnx)
3905         add_cppflags -D_QNX_SOURCE
3906         network_extralibs="-lsocket"
3907         ;;
3908     symbian)
3909         SLIBSUF=".dll"
3910         enable dos_paths
3911         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3912         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3913         add_ldflags -Wl,--target1-abs,--no-undefined \
3914                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3915                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3916         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3917                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3918                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3919         ;;
3920     osf1)
3921         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3922         ;;
3923     minix)
3924         ;;
3925     plan9)
3926         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3927                      -D_REENTRANT_SOURCE        \
3928                      -D_RESEARCH_SOURCE         \
3929                      -DFD_SETSIZE=96            \
3930                      -DHAVE_SOCK_OPTS
3931         add_compat strtod.o strtod=avpriv_strtod
3932         network_extralibs='-lbsd'
3933         exeobjs=compat/plan9/main.o
3934         cp_f='cp'
3935         ;;
3936     none)
3937         ;;
3938     *)
3939         die "Unknown OS '$target_os'."
3940         ;;
3941 esac
3942
3943 # determine libc flavour
3944
3945 probe_libc(){
3946     pfx=$1
3947     pfx_no_=${pfx%_}
3948     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3949     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3950         eval ${pfx}libc_type=uclibc
3951         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3952     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3953         eval ${pfx}libc_type=glibc
3954         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3955     # MinGW headers can be installed on Cygwin, so check for newlib first.
3956     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3957         eval ${pfx}libc_type=newlib
3958         add_${pfx}cppflags -U__STRICT_ANSI__
3959     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3960     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3961         eval ${pfx}libc_type=mingw64
3962         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3963         eval test \$${pfx_no_}cc_type = "gcc" &&
3964             add_${pfx}cppflags -D__printf__=__gnu_printf__
3965     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3966          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3967         eval ${pfx}libc_type=mingw32
3968         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3969             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3970             die "ERROR: MinGW32 runtime version must be >= 3.15."
3971         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3972         eval test \$${pfx_no_}cc_type = "gcc" &&
3973             add_${pfx}cppflags -D__printf__=__gnu_printf__
3974     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3975         eval ${pfx}libc_type=msvcrt
3976         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
3977             if [ "$pfx" = host_ ]; then
3978                 add_host_cppflags -Dsnprintf=_snprintf
3979             else
3980                 add_compat strtod.o strtod=avpriv_strtod
3981                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3982                                              _snprintf=avpriv_snprintf  \
3983                                              vsnprintf=avpriv_vsnprintf
3984             fi
3985         fi
3986         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3987         # 0x601 by default unless something else is set by the user.
3988         # This can easily lead to us detecting functions only present
3989         # in such new versions and producing binaries requiring windows 7.0.
3990         # Therefore explicitly set the default to XP unless the user has
3991         # set something else on the command line.
3992         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
3993         # family. For these cases, configure is free to use any functions
3994         # found in the SDK headers by default. (Alternatively, we could force
3995         # _WIN32_WINNT to 0x0602 in that case.)
3996         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3997             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
3998 #ifdef WINAPI_FAMILY
3999 #include <winapifamily.h>
4000 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4001 #error not desktop
4002 #endif
4003 #endif
4004 EOF
4005     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4006         eval ${pfx}libc_type=klibc
4007     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4008         eval ${pfx}libc_type=bionic
4009     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4010         eval ${pfx}libc_type=solaris
4011         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4012     else
4013         eval ${pfx}libc_type=default
4014         add_${pfx}cppflags -D_DEFAULT_SOURCE
4015     fi
4016 }
4017
4018 probe_libc
4019 test -n "$libc_type" && enable libc_$libc_type
4020 probe_libc host_
4021 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4022
4023 case $libc_type in
4024     bionic)
4025         add_compat strtod.o strtod=avpriv_strtod
4026         ;;
4027 esac
4028
4029 # hacks for compiler/libc/os combinations
4030
4031 if enabled_all tms470 libc_glibc; then
4032     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4033     add_cppflags -D__USER_LABEL_PREFIX__=
4034     add_cppflags -D__builtin_memset=memset
4035     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4036     add_cflags   -pds=48    # incompatible redefinition of macro
4037 fi
4038
4039 if enabled_all ccc libc_glibc; then
4040     add_ldflags -Wl,-z,now  # calls to libots crash without this
4041 fi
4042
4043 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4044     add_cppflags '-I\$(SRC_PATH)/compat/float'
4045
4046 esc(){
4047     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4048 }
4049
4050 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
4051
4052 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4053
4054 set_default $PATHS_LIST
4055 set_default nm
4056
4057 # we need to build at least one lib type
4058 if ! enabled_any static shared; then
4059     cat <<EOF
4060 At least one library type must be built.
4061 Specify --enable-static to build the static libraries or --enable-shared to
4062 build the shared libraries as well. To only build the shared libraries specify
4063 --disable-static in addition to --enable-shared.
4064 EOF
4065     exit 1
4066 fi
4067
4068 die_license_disabled() {
4069     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4070 }
4071
4072 die_license_disabled gpl libcdio
4073 die_license_disabled gpl libx264
4074 die_license_disabled gpl libx265
4075 die_license_disabled gpl libxavs
4076 die_license_disabled gpl libxvid
4077 die_license_disabled gpl x11grab
4078
4079 die_license_disabled nonfree cuda
4080 die_license_disabled nonfree libfaac
4081 die_license_disabled nonfree libfdk_aac
4082 die_license_disabled nonfree libnpp
4083 die_license_disabled nonfree openssl
4084
4085 die_license_disabled version3 libopencore_amrnb
4086 die_license_disabled version3 libopencore_amrwb
4087 die_license_disabled version3 libvo_aacenc
4088 die_license_disabled version3 libvo_amrwbenc
4089
4090 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4091
4092 disabled optimizations || check_cflags -fomit-frame-pointer
4093
4094 enable_weak_pic() {
4095     disabled pic && return
4096     enable pic
4097     add_cppflags -DPIC
4098     case "$target_os" in
4099     mingw*|cygwin*)
4100         ;;
4101     *)
4102         add_cflags -fPIC
4103         ;;
4104     esac
4105     add_asflags  -fPIC
4106 }
4107
4108 enabled pic && enable_weak_pic
4109
4110 check_cc <<EOF || die "Symbol mangling check failed."
4111 int ff_extern;
4112 EOF
4113 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4114 extern_prefix=${sym%%ff_extern*}
4115
4116 check_cc <<EOF && enable_weak inline_asm
4117 void foo(void) { __asm__ volatile ("" ::); }
4118 EOF
4119
4120 _restrict=
4121 for restrict_keyword in restrict __restrict__ __restrict; do
4122     check_cc <<EOF && _restrict=$restrict_keyword && break
4123 void foo(char * $restrict_keyword p);
4124 EOF
4125 done
4126
4127 check_cc <<EOF && enable pragma_deprecated
4128 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4129 EOF
4130
4131 check_cc <<EOF && enable attribute_packed
4132 struct { int x; } __attribute__((packed)) x;
4133 EOF
4134
4135 check_cc <<EOF && enable attribute_may_alias
4136 union { int x; } __attribute__((may_alias)) x;
4137 EOF
4138
4139 check_cc <<EOF || die "endian test failed"
4140 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4141 EOF
4142 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4143
4144 check_gas() {
4145     log "check_gas using '$as' as AS"
4146     # :vararg is used on aarch64, arm and ppc altivec
4147     check_as <<EOF || return 1
4148 .macro m n, y:vararg=0
4149 \n: .int \y
4150 .endm
4151 m x
4152 EOF
4153     # .altmacro is only used in arm asm
4154     ! enabled arm || check_as <<EOF || return 1
4155 .altmacro
4156 EOF
4157     enable gnu_as
4158     return 0
4159 }
4160
4161 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4162     nogas=:
4163     enabled_any arm aarch64 && nogas=die
4164     enabled_all ppc altivec && nogas=warn
4165     as_noop=-v
4166
4167     case $as_type in
4168         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4169         gcc)  gaspp_as_type=gas ;;
4170         *)    gaspp_as_type=$as_type ;;
4171     esac
4172
4173     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4174
4175     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4176         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4177
4178     if ! check_gas ; then
4179         as=${gas:=$as}
4180         check_gas || \
4181             $nogas "GNU assembler not found, install/update gas-preprocessor"
4182     fi
4183
4184     check_as <<EOF && enable as_func
4185 .func test
4186 .endfunc
4187 EOF
4188 fi
4189
4190 check_inline_asm inline_asm_labels '"1:\n"'
4191
4192 if enabled aarch64; then
4193     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4194     # internal assembler in clang 3.3 does not support this instruction
4195     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4196     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4197
4198     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4199
4200 elif enabled alpha; then
4201
4202     check_cflags -mieee
4203
4204 elif enabled arm; then
4205
4206     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4207     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4208     enabled thumb && check_cflags -mthumb || check_cflags -marm
4209
4210     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4211         enable vfp_args
4212     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4213         enable vfp_args
4214     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4215         case "${cross_prefix:-$cc}" in
4216             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4217             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4218 __asm__ (".eabi_attribute 28, 1");
4219 int main(void) { return 0; }
4220 EOF
4221         esac
4222         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4223     fi
4224
4225     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4226     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4227     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4228     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4229     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4230     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4231
4232     [ $target_os = linux ] || [ $target_os = android ] ||
4233         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4234             $ARCH_EXT_LIST_ARM
4235
4236     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4237
4238     check_as <<EOF && enable as_dn_directive
4239 ra .dn d0.i16
4240 .unreq ra
4241 EOF
4242
4243     # llvm's integrated assembler supports .object_arch from llvm 3.5
4244     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4245 .object_arch armv4
4246 EOF
4247
4248     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4249
4250 elif enabled mips; then
4251
4252     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4253
4254     # make sure that only an instruction set is enabled
4255     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4256
4257     if enabled mips64; then
4258         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4259             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4260                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4261     else
4262         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4263             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4264                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4265     fi
4266
4267 elif enabled parisc; then
4268
4269     if enabled gcc; then
4270         case $($cc -dumpversion) in
4271             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4272         esac
4273     fi
4274
4275 elif enabled ppc; then
4276
4277     enable local_aligned_8 local_aligned_16
4278
4279     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4280     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4281     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4282     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4283
4284     # AltiVec flags: The FSF version of GCC differs from the Apple version
4285     if enabled altivec; then
4286         check_cflags -maltivec -mabi=altivec &&
4287         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4288         check_cflags -faltivec
4289
4290         # check if our compiler supports Motorola AltiVec C API
4291         check_cc <<EOF || disable altivec
4292 $inc_altivec_h
4293 int main(void) {
4294     vector signed int v1 = (vector signed int) { 0 };
4295     vector signed int v2 = (vector signed int) { 1 };
4296     v1 = vec_add(v1, v2);
4297     return 0;
4298 }
4299 EOF
4300
4301         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4302     fi
4303
4304     if enabled vsx; then
4305         check_cflags -mvsx &&
4306         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4307     fi
4308
4309     if enabled power8; then
4310         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4311     fi
4312
4313 elif enabled x86; then
4314
4315     check_builtin rdtsc    intrin.h   "__rdtsc()"
4316     check_builtin mm_empty mmintrin.h "_mm_empty()"
4317
4318     enable local_aligned_8 local_aligned_16
4319
4320     # check whether EBP is available on x86
4321     # As 'i' is stored on the stack, this program will crash
4322     # if the base pointer is used to access it because the
4323     # base pointer is cleared in the inline assembly code.
4324     check_exec_crash <<EOF && enable ebp_available
4325 volatile int i=0;
4326 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4327 return i;
4328 EOF
4329
4330     # check whether EBX is available on x86
4331     check_inline_asm ebx_available '""::"b"(0)' &&
4332         check_inline_asm ebx_available '"":::"%ebx"'
4333
4334     # check whether xmm clobbers are supported
4335     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4336
4337     # check whether binutils is new enough to compile SSSE3/MMXEXT
4338     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4339     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4340
4341     if ! disabled_any asm mmx yasm; then
4342         if check_cmd $yasmexe --version; then
4343             enabled x86_64 && yasm_extra="-m amd64"
4344             yasm_debug="-g dwarf2"
4345         elif check_cmd nasm -v; then
4346             yasmexe=nasm
4347             yasm_debug="-g -F dwarf"
4348             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4349         fi
4350
4351         YASMFLAGS="-f $objformat $yasm_extra"
4352         enabled pic               && append YASMFLAGS "-DPIC"
4353         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4354         case "$objformat" in
4355             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4356         esac
4357
4358         check_yasm "movbe ecx, [5]" && enable yasm ||
4359             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4360         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4361         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4362         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4363         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4364         check_yasm "CPU amdnop" || disable cpunop
4365     fi
4366
4367     case "$cpu" in
4368         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4369             disable fast_clz
4370         ;;
4371     esac
4372
4373 fi
4374
4375 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4376
4377 check_ldflags -Wl,--as-needed
4378
4379 if check_func dlopen; then
4380     ldl=
4381 elif check_func dlopen -ldl; then
4382     ldl=-ldl
4383 fi
4384
4385 if ! disabled network; then
4386     check_func getaddrinfo $network_extralibs
4387     check_func inet_aton $network_extralibs
4388
4389     check_type netdb.h "struct addrinfo"
4390     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4391     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4392     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4393     check_type poll.h "struct pollfd"
4394     check_type netinet/sctp.h "struct sctp_event_subscribe"
4395     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4396     check_type netinet/in.h "struct sockaddr_in6"
4397     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4398     check_type "sys/types.h sys/socket.h" socklen_t
4399
4400     # Prefer arpa/inet.h over winsock2
4401     if check_header arpa/inet.h ; then
4402         check_func closesocket
4403     elif check_header winsock2.h ; then
4404         check_func_headers winsock2.h closesocket -lws2 &&
4405             network_extralibs="-lws2" ||
4406         { check_func_headers winsock2.h closesocket -lws2_32 &&
4407             network_extralibs="-lws2_32"; } || disable winsock2_h network
4408         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4409
4410         check_type ws2tcpip.h socklen_t
4411         check_type ws2tcpip.h "struct addrinfo"
4412         check_type ws2tcpip.h "struct group_source_req"
4413         check_type ws2tcpip.h "struct ip_mreq_source"
4414         check_type ws2tcpip.h "struct ipv6_mreq"
4415         check_type winsock2.h "struct pollfd"
4416         check_struct winsock2.h "struct sockaddr" sa_len
4417         check_type ws2tcpip.h "struct sockaddr_in6"
4418         check_type ws2tcpip.h "struct sockaddr_storage"
4419     else
4420         disable network
4421     fi
4422 fi
4423
4424 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4425 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4426 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4427 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4428
4429 case "$custom_allocator" in
4430     jemalloc)
4431         # jemalloc by default does not use a prefix
4432         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4433     ;;
4434     tcmalloc)
4435         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
4436         malloc_prefix=tc_
4437     ;;
4438 esac
4439
4440 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4441 check_func  ${malloc_prefix}memalign            && enable memalign
4442 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4443
4444 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4445     check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4446
4447 check_func  fcntl
4448 check_func  fork
4449 check_func  gethrtime
4450 check_func  getopt
4451 check_func  getrusage
4452 check_func  gettimeofday
4453 check_func  gmtime_r
4454 check_func  isatty
4455 check_func  localtime_r
4456 check_func  mach_absolute_time
4457 check_func  mkstemp
4458 check_func  mmap
4459 check_func  mprotect
4460 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4461 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4462 check_func  sched_getaffinity
4463 check_func  setrlimit
4464 check_func  strerror_r
4465 check_func  sysconf
4466 check_func  sysctl
4467 check_func  usleep
4468
4469 check_func_headers io.h setmode
4470 check_func_headers stdlib.h getenv
4471
4472 check_func_headers windows.h CoTaskMemFree -lole32
4473 check_func_headers windows.h GetProcessAffinityMask
4474 check_func_headers windows.h GetProcessTimes
4475 check_func_headers windows.h GetSystemTimeAsFileTime
4476 check_func_headers windows.h LoadLibrary
4477 check_func_headers windows.h MapViewOfFile
4478 check_func_headers windows.h SetConsoleTextAttribute
4479 check_func_headers windows.h Sleep
4480 check_func_headers windows.h VirtualAlloc
4481 check_struct windows.h "CONDITION_VARIABLE" Ptr
4482
4483 check_header direct.h
4484 check_header dlfcn.h
4485 check_header d3d11.h
4486 check_header dxva.h
4487 check_header dxva2api.h
4488 check_header io.h
4489 check_header mach/mach_time.h
4490 check_header malloc.h
4491 check_header poll.h
4492 check_header sys/mman.h
4493 check_header sys/param.h
4494 check_header sys/resource.h
4495 check_header sys/select.h
4496 check_header sys/time.h
4497 check_header sys/un.h
4498 check_header unistd.h
4499 check_header valgrind/valgrind.h
4500 check_header vdpau/vdpau.h
4501 check_header vdpau/vdpau_x11.h
4502 check_header VideoDecodeAcceleration/VDADecoder.h
4503 check_header windows.h
4504 check_header X11/extensions/XvMClib.h
4505
4506 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4507 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4508 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4509
4510 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4511
4512 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4513 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4514 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4515
4516 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4517 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4518 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4519 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4520
4521 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4522
4523 if ! disabled w32threads && ! enabled pthreads; then
4524     check_func_headers "windows.h process.h" _beginthreadex &&
4525         enable w32threads || disable w32threads
4526 fi
4527
4528 # check for some common methods of building with pthread support
4529 # do this before the optional library checks as some of them require pthreads
4530 if ! disabled pthreads && ! enabled w32threads; then
4531     enable pthreads
4532     if check_func pthread_join -pthread; then
4533         add_cflags -pthread
4534         add_extralibs -pthread
4535     elif check_func pthread_join -pthreads; then
4536         add_cflags -pthreads
4537         add_extralibs -pthreads
4538     elif check_func pthread_join -lpthreadGC2; then
4539         add_extralibs -lpthreadGC2
4540     elif check_lib pthread.h pthread_join -lpthread; then
4541         :
4542     elif ! check_func pthread_join; then
4543         disable pthreads
4544     fi
4545 fi
4546
4547 enabled pthreads &&
4548     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
4549
4550 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4551 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4552
4553 check_lib math.h sin -lm && LIBM="-lm"
4554 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4555
4556 atan2f_args=2
4557 ldexpf_args=2
4558 powf_args=2
4559
4560 for func in $MATH_FUNCS; do
4561     eval check_mathfunc $func \${${func}_args:-1}
4562 done
4563
4564 # these are off by default, so fail if requested and not available
4565 enabled avisynth          && { check_lib2 "avisynth/avisynth_c.h windows.h" LoadLibrary ||
4566                                check_lib2 "avxsynth/avxsynth_c.h dlfcn.h" dlopen -ldl   ||
4567                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4568 enabled cuda              && check_lib cuda.h cuInit -lcuda
4569 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4570 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4571 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4572 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4573 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4574 enabled libfdk_aac        && require_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4575 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4576 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4577 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4578                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4579                                done || die "ERROR: libgsm not found"; }
4580 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4581 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4582 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
4583 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4584 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4585 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4586 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4587 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4588 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
4589 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4590                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4591 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4592 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4593 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4594 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4595 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
4596 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4597 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4598 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4599 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4600 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4601 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4602 enabled libvpx            && require_pkg_config "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version && {
4603     enabled libvpx_vp8_decoder && {
4604         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
4605             disable libvpx_vp8_decoder;
4606     }
4607     enabled libvpx_vp8_encoder && {
4608         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
4609             disable libvpx_vp8_encoder;
4610     }
4611     enabled libvpx_vp9_decoder && {
4612         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
4613             disable libvpx_vp9_decoder;
4614     }
4615     enabled libvpx_vp9_encoder && {
4616         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
4617             disable libvpx_vp9_encoder;
4618     }
4619     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
4620         die "libvpx enabled but no supported decoders found"
4621     fi
4622 }
4623 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4624 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4625 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4626                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4627                                die "ERROR: libx264 version must be >= 0.118."; } &&
4628                              { check_cpp_condition x264.h "X264_MPEG2" &&
4629                                enable libx262; }
4630 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
4631                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
4632                                die "ERROR: libx265 version must be >= 57."; }
4633 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4634 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4635 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4636                                 { ! enabled cross_compile && {
4637                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
4638                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
4639                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
4640                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
4641                                die "ERROR: mmal not found"; }
4642 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
4643 enabled omx_rpi && enable omx
4644 enabled omx               && { check_header OMX_Core.h ||
4645                                 { ! enabled cross_compile && enabled omx_rpi && {
4646                                     add_cflags -isystem/opt/vc/include/IL ; }
4647                                 check_header OMX_Core.h ; } ||
4648                                die "ERROR: OpenMAX IL headers not found"; }
4649 enabled openssl           && { check_pkg_config openssl openssl/ssl.h SSL_library_init && {
4650                                add_cflags $openssl_cflags && add_extralibs $openssl_libs; }||
4651                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4652                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4653                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4654                                die "ERROR: openssl not found"; }
4655
4656 if enabled gnutls; then
4657     { check_lib2 gmp.h mpz_export -lgmp && enable gmp; } ||
4658     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4659 fi
4660
4661 # libdc1394 check
4662 if enabled libdc1394; then
4663     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
4664         enable libdc1394_2; } ||
4665     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4666         enable libdc1394_1; } ||
4667     die "ERROR: No version of libdc1394 found "
4668 fi
4669
4670 if enabled nvenc; then
4671     check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."
4672     check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6" ||
4673         die "ERROR: NVENC API version 5 or older is not supported"
4674 fi
4675
4676 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4677     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4678     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4679     enable sdl
4680 fi
4681
4682 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4683 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4684
4685 check_header linux/fb.h
4686 check_header linux/videodev2.h
4687 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4688
4689 check_header AVFoundation/AVFoundation.h &&
4690     check_objcflags -fobjc-arc &&
4691     add_extralibs -framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia ||
4692     disable AVFoundation_AVFoundation_h
4693
4694 check_header sys/videoio.h
4695
4696 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4697 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4698 # w32api 3.12 had it defined wrong
4699 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4700
4701 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4702 { check_header dev/bktr/ioctl_meteor.h &&
4703   check_header dev/bktr/ioctl_bt848.h; } ||
4704 { check_header machine/ioctl_meteor.h &&
4705   check_header machine/ioctl_bt848.h; } ||
4706 { check_header dev/video/meteor/ioctl_meteor.h &&
4707   check_header dev/video/bktr/ioctl_bt848.h; } ||
4708 check_header dev/ic/bt8xx.h
4709
4710 check_header sndio.h
4711 check_header sys/soundcard.h
4712 check_header soundcard.h
4713
4714 enabled_any alsa_indev alsa_outdev &&
4715     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4716
4717 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4718     check_func jack_port_get_latency_range -ljack
4719
4720 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4721
4722 if enabled libcdio; then
4723     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4724     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4725     die "ERROR: No usable libcdio/cdparanoia found"
4726 fi
4727
4728 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4729
4730 if enabled libxcb || enabled x11grab && ! disabled libxcb; then
4731     check_pkg_config xcb-shape xcb/shape.h xcb_shape_rectangles || {
4732         enabled libxcb && die "ERROR: libxcb not found";
4733     } && disable x11grab && enable libxcb
4734
4735     disabled libxcb_shm ||
4736         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
4737             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
4738         } && check_header sys/shm.h && enable libxcb_shm
4739
4740     disabled libxcb_xfixes ||
4741         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
4742             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
4743         } && enable libxcb_xfixes
4744
4745     add_cflags "$xcb_event_cflags $xcb_shm_cflags $xcb_xfixes_cflags"
4746     add_extralibs "$xcb_event_libs $xcb_shm_libs $xcb_xfixes_libs"
4747 fi
4748
4749 if enabled x11grab; then
4750     enabled xlib || die "ERROR: Xlib not found"
4751     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
4752     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
4753 fi
4754
4755 enabled vaapi &&
4756     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
4757     disable vaapi
4758
4759 if enabled vaapi ; then
4760     enabled xlib &&
4761     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
4762     enable vaapi_x11
4763
4764     check_lib2 "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
4765     enable vaapi_drm
4766 fi
4767
4768 enabled vdpau &&
4769     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4770     disable vdpau
4771
4772 enabled vdpau && enabled xlib &&
4773     check_lib2 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4774     enable vdpau_x11
4775
4776 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4777
4778 # add some useful compiler flags if supported
4779 check_cflags -Wdeclaration-after-statement
4780 check_cflags -Wall
4781 check_cflags -Wdisabled-optimization
4782 check_cflags -Wpointer-arith
4783 check_cflags -Wredundant-decls
4784 check_cflags -Wwrite-strings
4785 check_cflags -Wtype-limits
4786 check_cflags -Wundef
4787 check_cflags -Wmissing-prototypes
4788 check_cflags -Wstrict-prototypes
4789 enabled extra_warnings && check_cflags -Winline
4790 enabled extra_warnings && check_cflags -Wcast-qual
4791
4792 check_disable_warning(){
4793     warning_flag=-W${1#-Wno-}
4794     test_cflags $warning_flag && add_cflags $1
4795 }
4796
4797 check_disable_warning -Wno-parentheses
4798 check_disable_warning -Wno-switch
4799 check_disable_warning -Wno-format-zero-length
4800 check_disable_warning -Wno-pointer-sign
4801
4802 # add some linker flags
4803 check_ldflags -Wl,--warn-common
4804 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4805 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
4806 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4807
4808 # add some strip flags
4809 # -wN '..@*' is more selective than -x, but not available everywhere.
4810 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4811
4812 enabled neon_clobber_test &&
4813     check_ldflags -Wl,--wrap,avcodec_open2              \
4814                   -Wl,--wrap,avcodec_decode_audio4      \
4815                   -Wl,--wrap,avcodec_decode_video2      \
4816                   -Wl,--wrap,avcodec_decode_subtitle2   \
4817                   -Wl,--wrap,avcodec_encode_audio2      \
4818                   -Wl,--wrap,avcodec_encode_video2      \
4819                   -Wl,--wrap,avcodec_encode_subtitle    \
4820                   -Wl,--wrap,avresample_convert ||
4821     disable neon_clobber_test
4822
4823 enabled xmm_clobber_test &&
4824     check_ldflags -Wl,--wrap,avcodec_open2              \
4825                   -Wl,--wrap,avcodec_decode_audio4      \
4826                   -Wl,--wrap,avcodec_decode_video2      \
4827                   -Wl,--wrap,avcodec_decode_subtitle2   \
4828                   -Wl,--wrap,avcodec_encode_audio2      \
4829                   -Wl,--wrap,avcodec_encode_video2      \
4830                   -Wl,--wrap,avcodec_encode_subtitle    \
4831                   -Wl,--wrap,avresample_convert         \
4832                   -Wl,--wrap,sws_scale ||
4833     disable xmm_clobber_test
4834
4835 check_ld <<EOF && enable proper_dce
4836 extern const int array[512];
4837 static inline int func(void) { return array[0]; }
4838 int main(void) { return 0; }
4839 EOF
4840
4841 if enabled proper_dce; then