lavfi: add a QSV scaling filter
[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='$ldl'
2407 hqdn3d_filter_deps="gpl"
2408 interlace_filter_deps="gpl"
2409 ocv_filter_deps="libopencv"
2410 resample_filter_deps="avresample"
2411 scale_filter_deps="swscale"
2412 scale_qsv_filter_deps="libmfx"
2413 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2414
2415 # examples
2416 avcodec_example_deps="avcodec avutil"
2417 filter_audio_example_deps="avfilter avutil"
2418 metadata_example_deps="avformat avutil"
2419 output_example_deps="avcodec avformat avutil swscale"
2420 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2421 transcode_aac_example_deps="avcodec avformat avresample"
2422
2423 # libraries, in linking order
2424 avcodec_deps="avutil"
2425 avdevice_deps="avformat avcodec avutil"
2426 avfilter_deps="avutil"
2427 avformat_deps="avcodec avutil"
2428 avresample_deps="avutil"
2429 swscale_deps="avutil"
2430
2431 # programs
2432 avconv_deps="avcodec avfilter avformat avresample swscale"
2433 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2434                fps_filter null_filter resample_filter scale_filter
2435                setpts_filter trim_filter"
2436 avplay_deps="avcodec avfilter avformat avresample sdl"
2437 avplay_libs='$sdl_libs'
2438 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2439 avprobe_deps="avcodec avformat"
2440
2441 # documentation
2442 pod2man_deps="doc"
2443 texi2html_deps="doc"
2444
2445 # default parameters
2446
2447 logfile="config.log"
2448
2449 # installation paths
2450 prefix_default="/usr/local"
2451 bindir_default='${prefix}/bin'
2452 datadir_default='${prefix}/share/avconv'
2453 docdir_default='${prefix}/share/doc/libav'
2454 incdir_default='${prefix}/include'
2455 libdir_default='${prefix}/lib'
2456 mandir_default='${prefix}/share/man'
2457 shlibdir_default="$libdir_default"
2458
2459 # toolchain
2460 ar_default="ar"
2461 cc_default="gcc"
2462 host_cc_default="gcc"
2463 cp_f="cp -f"
2464 ln_s="ln -s -f"
2465 nm_default="nm -g"
2466 objformat="elf"
2467 pkg_config_default=pkg-config
2468 ranlib="ranlib"
2469 strip="strip"
2470 version_script='--version-script'
2471 yasmexe="yasm"
2472
2473 # machine
2474 arch_default=$(uname -m)
2475 cpu="generic"
2476 intrinsics="none"
2477
2478 # OS
2479 target_os_default=$(tolower $(uname -s))
2480 host_os=$target_os_default
2481
2482 # configurable options
2483 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2484
2485 enable asm
2486 enable debug
2487 enable doc
2488 enable faan faandct faanidct
2489 enable optimizations
2490 enable safe_bitstream_reader
2491 enable static
2492 enable swscale_alpha
2493 enable valgrind_backtrace
2494
2495 # By default, enable only those hwaccels that have no external dependencies.
2496 enable d3d11va dxva2 vda vdpau
2497
2498 # build settings
2499 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2500 LIBPREF="lib"
2501 LIBSUF=".a"
2502 FULLNAME='$(NAME)$(BUILDSUF)'
2503 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2504 SLIBPREF="lib"
2505 SLIBSUF=".so"
2506 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2507 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2508 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2509 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2510 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2511 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2512 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2513
2514 asflags_filter=echo
2515 cflags_filter=echo
2516 ldflags_filter=echo
2517
2518 AS_C='-c'
2519 AS_O='-o $@'
2520 CC_C='-c'
2521 CC_E='-E -o $@'
2522 CC_O='-o $@'
2523 OBJCC_C='-c'
2524 OBJCC_E='-E -o $@'
2525 OBJCC_O='-o $@'
2526 LD_O='-o $@'
2527 LD_LIB='-l%'
2528 LD_PATH='-L'
2529 HOSTCC_C='-c'
2530 HOSTCC_E='-E -o $@'
2531 HOSTCC_O='-o $@'
2532 HOSTLD_O='-o $@'
2533
2534 host_libs='-lm'
2535 host_cflags_filter=echo
2536 host_ldflags_filter=echo
2537
2538 target_path='$(CURDIR)'
2539
2540 # since the object filename is not given with the -MM flag, the compiler
2541 # is only able to print the basename, and we must add the path ourselves
2542 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2543 DEPFLAGS='-MM'
2544
2545 # find source path
2546 if test -f configure; then
2547     source_path=.
2548 else
2549     source_path=$(cd $(dirname "$0"); pwd)
2550     echo "$source_path" | grep -q '[[:blank:]]' &&
2551         die "Out of tree builds are impossible with whitespace in source path."
2552     test -e "$source_path/config.h" &&
2553         die "Out of tree builds are impossible with config.h in source dir."
2554 fi
2555
2556 for v in "$@"; do
2557     r=${v#*=}
2558     l=${v%"$r"}
2559     r=$(sh_quote "$r")
2560     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2561 done
2562
2563 find_things(){
2564     thing=$1
2565     pattern=$2
2566     file=$source_path/$3
2567     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2568 }
2569
2570 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2571 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2572 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2573 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2574 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2575 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2576 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2577 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2578 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2579
2580 find_things_extern(){
2581     thing=$1
2582     pattern=$2
2583     file=$source_path/$3
2584     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2585 }
2586
2587 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2588 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2589
2590 ALL_COMPONENTS="
2591     $BSF_LIST
2592     $DECODER_LIST
2593     $DEMUXER_LIST
2594     $ENCODER_LIST
2595     $FILTER_LIST
2596     $HWACCEL_LIST
2597     $INDEV_LIST
2598     $MUXER_LIST
2599     $OUTDEV_LIST
2600     $PARSER_LIST
2601     $PROTOCOL_LIST
2602 "
2603
2604 for n in $COMPONENT_LIST; do
2605     v=$(toupper ${n%s})_LIST
2606     eval enable \$$v
2607     eval ${n}_if_any="\$$v"
2608 done
2609
2610 enable $ARCH_EXT_LIST
2611
2612 die_unknown(){
2613     echo "Unknown option \"$1\"."
2614     echo "See $0 --help for available options."
2615     exit 1
2616 }
2617
2618 print_3_columns() {
2619     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2620 }
2621
2622 show_list() {
2623     suffix=_$1
2624     shift
2625     echo $* | sed s/$suffix//g | print_3_columns
2626     exit 0
2627 }
2628
2629 rand_list(){
2630     IFS=', '
2631     set -- $*
2632     unset IFS
2633     for thing; do
2634         comp=${thing%:*}
2635         prob=${thing#$comp}
2636         prob=${prob#:}
2637         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2638         echo "prob ${prob:-0.5}"
2639         printf '%s\n' $comp
2640     done
2641 }
2642
2643 do_random(){
2644     action=$1
2645     shift
2646     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2647     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2648 }
2649
2650 for opt do
2651     optval="${opt#*=}"
2652     case "$opt" in
2653         --extra-ldflags=*)
2654             add_ldflags $optval
2655         ;;
2656         --extra-ldexeflags=*)
2657             add_ldexeflags $optval
2658         ;;
2659         --extra-libs=*)
2660             add_extralibs $optval
2661         ;;
2662         --disable-devices)
2663             disable $INDEV_LIST $OUTDEV_LIST
2664         ;;
2665         --enable-debug=*)
2666             debuglevel="$optval"
2667         ;;
2668         --disable-programs)
2669             disable $PROGRAM_LIST
2670         ;;
2671         --disable-everything)
2672             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2673         ;;
2674         --disable-all)
2675             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2676             disable $LIBRARY_LIST $PROGRAM_LIST doc
2677         ;;
2678         --enable-random|--disable-random)
2679             action=${opt%%-random}
2680             do_random ${action#--} $COMPONENT_LIST
2681         ;;
2682         --enable-random=*|--disable-random=*)
2683             action=${opt%%-random=*}
2684             do_random ${action#--} $optval
2685         ;;
2686         --enable-*=*|--disable-*=*)
2687             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2688             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2689             eval list=\$$(toupper $thing)_LIST
2690             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2691             $action $(filter "$name" $list)
2692         ;;
2693         --enable-avserver|--disable-avserver*)
2694             warn "avserver has been removed, the ${opt} option is only"\
2695                  "provided for compatibility and will be removed in the future"
2696         ;;
2697         --enable-?*|--disable-?*)
2698             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2699             if is_in $option $COMPONENT_LIST; then
2700                 test $action = disable && action=unset
2701                 eval $action \$$(toupper ${option%s})_LIST
2702             elif is_in $option $CMDLINE_SELECT; then
2703                 $action $option
2704             else
2705                 die_unknown $opt
2706             fi
2707         ;;
2708         --list-*)
2709             NAME="${opt#--list-}"
2710             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2711             NAME=${NAME%s}
2712             eval show_list $NAME \$$(toupper $NAME)_LIST
2713         ;;
2714         --help|-h) show_help
2715         ;;
2716         *)
2717             optname="${opt%%=*}"
2718             optname="${optname#--}"
2719             optname=$(echo "$optname" | sed 's/-/_/g')
2720             if is_in $optname $CMDLINE_SET; then
2721                 eval $optname='$optval'
2722             elif is_in $optname $CMDLINE_APPEND; then
2723                 append $optname "$optval"
2724             else
2725                 die_unknown $opt
2726             fi
2727         ;;
2728     esac
2729 done
2730
2731 for e in $env; do
2732     eval "export $e"
2733 done
2734
2735 disabled logging && logfile=/dev/null
2736
2737 # Disable all the library-specific components if the library itself
2738 # is disabled, see AVCODEC_LIST and following _LIST variables.
2739
2740 disable_components(){
2741     disabled ${1} && disable $(
2742         eval components="\$$(toupper ${1})_COMPONENTS"
2743         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2744     )
2745 }
2746
2747 map 'disable_components $v' $LIBRARY_LIST
2748
2749 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2750 set >> $logfile
2751
2752 case "$toolchain" in
2753     *-asan)
2754         cc_default="${toolchain%-asan}"
2755         add_cflags  -fsanitize=address
2756         add_ldflags -fsanitize=address
2757     ;;
2758     *-msan)
2759         cc_default="${toolchain%-msan}"
2760         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2761         add_ldflags -fsanitize=memory
2762     ;;
2763     *-tsan)
2764         cc_default="${toolchain%-tsan}"
2765         add_cflags  -fsanitize=thread -pie
2766         add_ldflags -fsanitize=thread -pie
2767         case "$toolchain" in
2768             gcc-tsan)
2769                 add_cflags  -fPIC
2770                 add_ldflags -fPIC
2771                 ;;
2772         esac
2773     ;;
2774     *-usan)
2775         cc_default="${toolchain%-usan}"
2776         add_cflags  -fsanitize=undefined
2777         add_ldflags -fsanitize=undefined
2778         case "$toolchain" in
2779             clang-usan)
2780                 add_cflags -O1
2781                 ;;
2782         esac
2783     ;;
2784     valgrind-*)
2785         target_exec_default="valgrind"
2786         case "$toolchain" in
2787             valgrind-massif)
2788                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2789                 ;;
2790             valgrind-memcheck)
2791                 target_exec_args="--track-origins=yes --leak-check=full"
2792                 ;;
2793         esac
2794     ;;
2795     msvc)
2796         # Check whether the current MSVC version needs the C99 converter.
2797         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2798         # support enough of C99 to build libav. Default to the new
2799         # behaviour if the regexp was unable to match anything, since this
2800         # successfully parses the version number of existing supported
2801         # versions that require the converter (MSVC 2010 and 2012).
2802         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2803         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2804             cc_default="cl"
2805         else
2806             cc_default="c99wrap cl"
2807         fi
2808         ld_default="$source_path/compat/windows/mslink"
2809         nm_default="dumpbin -symbols"
2810         ar_default="lib"
2811         case "$arch" in
2812         arm*)
2813             as_default="armasm"
2814             ;;
2815         esac
2816         target_os_default="win32"
2817         # Use a relative path for TMPDIR. This makes sure all the
2818         # ffconf temp files are written with a relative path, avoiding
2819         # issues with msys/win32 path conversion for MSVC parameters
2820         # such as -Fo<file> or -out:<file>.
2821         TMPDIR=.
2822     ;;
2823     icl)
2824         cc_default="icl"
2825         ld_default="xilink"
2826         nm_default="dumpbin -symbols"
2827         ar_default="xilib"
2828         target_os_default="win32"
2829         TMPDIR=.
2830     ;;
2831     gcov)
2832         add_cflags  -fprofile-arcs -ftest-coverage
2833         add_ldflags -fprofile-arcs -ftest-coverage
2834     ;;
2835     llvm-cov)
2836         add_cflags -fprofile-arcs -ftest-coverage
2837         add_ldflags --coverage
2838     ;;
2839     hardened)
2840         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2841         add_cflags   -fno-strict-overflow -fstack-protector-all
2842         add_ldflags  -Wl,-z,relro -Wl,-z,now
2843     ;;
2844     ?*)
2845         die "Unknown toolchain $toolchain"
2846     ;;
2847 esac
2848
2849 test -n "$cross_prefix" && enable cross_compile
2850
2851 if enabled cross_compile; then
2852     test -n "$arch" && test -n "$target_os" ||
2853         die "Must specify target arch and OS when cross-compiling"
2854 fi
2855
2856 ar_default="${cross_prefix}${ar_default}"
2857 cc_default="${cross_prefix}${cc_default}"
2858 occ_default="${cross_prefix}${occ_default}"
2859 nm_default="${cross_prefix}${nm_default}"
2860 pkg_config_default="${cross_prefix}${pkg_config_default}"
2861 ranlib="${cross_prefix}${ranlib}"
2862 strip="${cross_prefix}${strip}"
2863
2864 sysinclude_default="${sysroot}/usr/include"
2865
2866 set_default arch cc pkg_config sysinclude target_exec target_os
2867 enabled cross_compile || host_cc_default=$cc
2868 set_default host_cc
2869
2870 if ! $pkg_config --version >/dev/null 2>&1; then
2871     warn "$pkg_config not found, library detection may fail."
2872     pkg_config=false
2873 fi
2874
2875 exesuf() {
2876     case $1 in
2877         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2878     esac
2879 }
2880
2881 EXESUF=$(exesuf $target_os)
2882 HOSTEXESUF=$(exesuf $host_os)
2883
2884 # set temporary file name
2885 : ${TMPDIR:=$TEMPDIR}
2886 : ${TMPDIR:=$TMP}
2887 : ${TMPDIR:=/tmp}
2888
2889 if ! check_cmd mktemp -u XXXXXX; then
2890     # simple replacement for missing mktemp
2891     # NOT SAFE FOR GENERAL USE
2892     mktemp(){
2893         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2894     }
2895 fi
2896
2897 tmpfile(){
2898     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2899         (set -C; exec > $tmp) 2>/dev/null ||
2900         die "Unable to create temporary file in $TMPDIR."
2901     append TMPFILES $tmp
2902     eval $1=$tmp
2903 }
2904
2905 trap 'rm -f -- $TMPFILES' EXIT
2906
2907 tmpfile TMPASM .asm
2908 tmpfile TMPC   .c
2909 tmpfile TMPE   $EXESUF
2910 tmpfile TMPH   .h
2911 tmpfile TMPO   .o
2912 tmpfile TMPS   .S
2913 tmpfile TMPSH  .sh
2914 tmpfile TMPV   .ver
2915
2916 unset -f mktemp
2917
2918 chmod +x $TMPE
2919
2920 # make sure we can execute files in $TMPDIR
2921 cat > $TMPSH 2>> $logfile <<EOF
2922 #! /bin/sh
2923 EOF
2924 chmod +x $TMPSH >> $logfile 2>&1
2925 if ! $TMPSH >> $logfile 2>&1; then
2926     cat <<EOF
2927 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2928 variable to another directory and make sure that it is not mounted noexec.
2929 EOF
2930     die "Sanity test failed."
2931 fi
2932
2933 armasm_flags(){
2934     for flag; do
2935         case $flag in
2936             # Filter out MSVC cl.exe options from cflags that shouldn't
2937             # be passed to gas-preprocessor
2938             -M[TD]*)                                            ;;
2939             *)                  echo $flag                      ;;
2940         esac
2941    done
2942 }
2943
2944 ccc_flags(){
2945     for flag; do
2946         case $flag in
2947             -std=c99)           echo -c99                       ;;
2948             -mcpu=*)            echo -arch ${flag#*=}           ;;
2949             -mieee)             echo -ieee                      ;;
2950             -O*|-fast)          echo $flag                      ;;
2951             -fno-math-errno)    echo -assume nomath_errno       ;;
2952             -g)                 echo -g3                        ;;
2953             -Wall)              echo -msg_enable level2         ;;
2954             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2955             -Wl,*)              echo $flag                      ;;
2956             -f*|-W*)                                            ;;
2957             *)                  echo $flag                      ;;
2958         esac
2959    done
2960 }
2961
2962 cparser_flags(){
2963     for flag; do
2964         case $flag in
2965             -Wno-switch)             echo -Wno-switch-enum ;;
2966             -Wno-format-zero-length) ;;
2967             -Wdisabled-optimization) ;;
2968             -Wno-pointer-sign)       echo -Wno-other ;;
2969             *)                       echo $flag ;;
2970         esac
2971     done
2972 }
2973
2974 msvc_common_flags(){
2975     for flag; do
2976         case $flag in
2977             # In addition to specifying certain flags under the compiler
2978             # specific filters, they must be specified here as well or else the
2979             # generic catch all at the bottom will print the original flag.
2980             -Wall)                ;;
2981             -std=c99)             ;;
2982             # Common flags
2983             -fomit-frame-pointer) ;;
2984             -g)                   echo -Z7 ;;
2985             -fno-math-errno)      ;;
2986             -fno-common)          ;;
2987             -fno-signed-zeros)    ;;
2988             -fPIC)                ;;
2989             -mthumb)              ;;
2990             -march=*)             ;;
2991             -lz)                  echo zlib.lib ;;
2992             -lavifil32)           echo vfw32.lib ;;
2993             -lavicap32)           echo vfw32.lib user32.lib ;;
2994             -lx264)               echo libx264.lib ;;
2995             -l*)                  echo ${flag#-l}.lib ;;
2996             -L*)                  echo -libpath:${flag#-L} ;;
2997             *)                    echo $flag ;;
2998         esac
2999     done
3000 }
3001
3002 msvc_flags(){
3003     msvc_common_flags "$@"
3004     for flag; do
3005         case $flag in
3006             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3007                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3008                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3009                                        -wd4273 -wd4554 -wd4701 ;;
3010         esac
3011     done
3012 }
3013
3014 icl_flags(){
3015     msvc_common_flags "$@"
3016     for flag; do
3017         case $flag in
3018             # Despite what Intel's documentation says -Wall, which is supported
3019             # on Windows, does enable remarks so disable them here.
3020             -Wall)                echo $flag -Qdiag-disable:remark ;;
3021             -std=c99)             echo -Qstd=c99 ;;
3022         esac
3023     done
3024 }
3025
3026 pgi_flags(){
3027     for flag; do
3028         case $flag in
3029             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3030             -fomit-frame-pointer) echo -Mnoframe ;;
3031             -g)                   echo -gopt ;;
3032             *)                    echo $flag ;;
3033         esac
3034     done
3035 }
3036
3037 suncc_flags(){
3038     for flag; do
3039         case $flag in
3040             -march=*|-mcpu=*)
3041                 case "${flag#*=}" in
3042                     native)                   echo -xtarget=native       ;;
3043                     v9|niagara)               echo -xarch=sparc          ;;
3044                     ultrasparc)               echo -xarch=sparcvis       ;;
3045                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3046                     i586|pentium)             echo -xchip=pentium        ;;
3047                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3048                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3049                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3050                     pentium4*)          echo -xtarget=pentium4           ;;
3051                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3052                     *-sse3)             echo -xarch=sse3                 ;;
3053                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3054                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3055                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3056                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3057                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3058                     k8|opteron|athlon64|athlon-fx)
3059                                                echo -xarch=sse2a         ;;
3060                     athlon*)                   echo -xarch=pentium_proa  ;;
3061                 esac
3062                 ;;
3063             -std=c99)             echo -xc99              ;;
3064             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3065             -fPIC)                echo -KPIC -xcode=pic32 ;;
3066             -W*,*)                echo $flag              ;;
3067             -f*-*|-W*|-mimpure-text)                      ;;
3068             -shared)              echo -G                 ;;
3069             *)                    echo $flag              ;;
3070         esac
3071     done
3072 }
3073
3074 tms470_flags(){
3075     for flag; do
3076         case $flag in
3077             -march=*|-mcpu=*)
3078                 case "${flag#*=}" in
3079                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3080                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3081                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3082                     armv6*|arm11*)          echo -mv=6   ;;
3083                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3084                                             echo -mv=5e  ;;
3085                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3086                 esac
3087                 ;;
3088             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3089             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3090             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3091             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3092             -msoft-float)   echo --float_support=vfplib       ;;
3093             -O[0-3]|-mf=*)  echo $flag                        ;;
3094             -g)             echo -g -mn                       ;;
3095             -pds=*)         echo $flag                        ;;
3096             -D*|-I*)        echo $flag                        ;;
3097             --gcc|--abi=*)  echo $flag                        ;;
3098             -me)            echo $flag                        ;;
3099         esac
3100     done
3101 }
3102
3103 probe_cc(){
3104     pfx=$1
3105     _cc=$2
3106
3107     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3108     unset _ld_o _ldflags _ld_lib _ld_path
3109     unset _depflags _DEPCMD _DEPFLAGS
3110     _flags_filter=echo
3111
3112     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3113         _type=llvm_gcc
3114         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3115         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3116         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3117         _cflags_speed='-O3'
3118         _cflags_size='-Os'
3119     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3120         _type=gcc
3121         gcc_version=$($_cc --version | head -n1)
3122         gcc_basever=$($_cc -dumpversion)
3123         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3124         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3125         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3126         if ! $_cc -dumpversion | grep -q '^2\.'; then
3127             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3128         fi
3129         _cflags_speed='-O3'
3130         _cflags_size='-Os'
3131     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3132         _type=icc
3133         _ident=$($_cc --version | head -n1)
3134         _depflags='-MMD'
3135         _cflags_speed='-O3'
3136         _cflags_size='-Os'
3137         _cflags_noopt='-O1'
3138     elif $_cc -v 2>&1 | grep -q xlc; then
3139         _type=xlc
3140         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3141         _cflags_speed='-O5'
3142         _cflags_size='-O5 -qcompact'
3143     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3144         _type=ccc
3145         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3146         _DEPFLAGS='-M'
3147         _cflags_speed='-fast'
3148         _cflags_size='-O1'
3149         _flags_filter=ccc_flags
3150     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3151         test -d "$sysroot" || die "No valid sysroot specified."
3152         _type=armcc
3153         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3154         armcc_conf="$PWD/armcc.conf"
3155         $_cc --arm_linux_configure                 \
3156              --arm_linux_config_file="$armcc_conf" \
3157              --configure_sysroot="$sysroot"        \
3158              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3159              die "Error creating armcc configuration file."
3160         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3161         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3162         as_default="${cross_prefix}gcc"
3163         _depflags='-MMD'
3164         _cflags_speed='-O3'
3165         _cflags_size='-Os'
3166     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3167         _type=tms470
3168         _ident=$($_cc -version | head -n1 | tr -s ' ')
3169         _flags='--gcc --abi=eabi -me'
3170         _cc_e='-ppl -fe=$@'
3171         _cc_o='-fe=$@'
3172         _depflags='-ppa -ppd=$(@:.o=.d)'
3173         _cflags_speed='-O3 -mf=5'
3174         _cflags_size='-O3 -mf=2'
3175         _flags_filter=tms470_flags
3176     elif $_cc -v 2>&1 | grep -q clang; then
3177         _type=clang
3178         _ident=$($_cc --version 2>/dev/null | head -n1)
3179         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3180         _cflags_speed='-O3'
3181         _cflags_size='-Os'
3182     elif $_cc -V 2>&1 | grep -q Sun; then
3183         _type=suncc
3184         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3185         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3186         _DEPFLAGS='-xM1 -xc99'
3187         _ldflags='-std=c99'
3188         _cflags_speed='-O5'
3189         _cflags_size='-O5 -xspace'
3190         _flags_filter=suncc_flags
3191     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3192         _type=pathscale
3193         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3194         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3195         _cflags_speed='-O2'
3196         _cflags_size='-Os'
3197         _flags_filter='filter_out -Wdisabled-optimization'
3198     elif $_cc -v 2>&1 | grep -q Open64; then
3199         _type=open64
3200         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3201         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3202         _cflags_speed='-O2'
3203         _cflags_size='-Os'
3204         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3205     elif $_cc -V 2>&1 | grep -q Portland; then
3206         _type=pgi
3207         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3208         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3209         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3210         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3211         _cflags_noopt="-O1"
3212         _flags_filter=pgi_flags
3213     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3214         _type=armasm
3215         _ident=$($_cc | head -n1)
3216         # 4509: "This form of conditional instruction is deprecated"
3217         _flags="-nologo -ignore 4509"
3218         _flags_filter=armasm_flags
3219     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3220         _type=msvc
3221         _ident=$($_cc 2>&1 | head -n1)
3222         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3223         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3224         _cflags_speed="-O2"
3225         _cflags_size="-O1"
3226         if $_cc -nologo- 2>&1 | grep -q Linker; then
3227             _ld_o='-out:$@'
3228         else
3229             _ld_o='-Fe$@'
3230         fi
3231         _cc_o='-Fo$@'
3232         _cc_e='-P -Fi$@'
3233         _flags_filter=msvc_flags
3234         _ld_lib='lib%.a'
3235         _ld_path='-libpath:'
3236         _flags='-nologo'
3237         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3238     elif $_cc 2>&1 | grep -q Intel; then
3239         _type=icl
3240         _ident=$($_cc 2>&1 | head -n1)
3241         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3242         # Not only is O3 broken on 13.x+ but it is slower on all previous
3243         # versions (tested) as well.
3244         _cflags_speed="-O2"
3245         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3246         if $_cc 2>&1 | grep -q Linker; then
3247             _ld_o='-out:$@'
3248         else
3249             _ld_o='-Fe$@'
3250         fi
3251         _cc_o='-Fo$@'
3252         _cc_e='-P'
3253         _flags_filter=icl_flags
3254         _ld_lib='lib%.a'
3255         _ld_path='-libpath:'
3256         # -Qdiag-error to make icl error when seeing certain unknown arguments
3257         _flags='-nologo -Qdiag-error:4044,10157'
3258         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3259         # with MSVC which enables it by default.
3260         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS'
3261     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3262         _type=cparser
3263         _ident=$($_cc --version | head -n1)
3264         _depflags='-MMD'
3265         _cflags_speed='-O4'
3266         _cflags_size='-O2'
3267         _flags_filter=cparser_flags
3268     fi
3269
3270     eval ${pfx}_type=\$_type
3271     eval ${pfx}_ident=\$_ident
3272 }
3273
3274 set_ccvars(){
3275     eval ${1}_C=\${_cc_c-\${${1}_C}}
3276     eval ${1}_E=\${_cc_e-\${${1}_E}}
3277     eval ${1}_O=\${_cc_o-\${${1}_O}}
3278
3279     if [ -n "$_depflags" ]; then
3280         eval ${1}_DEPFLAGS=\$_depflags
3281     else
3282         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3283         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3284         eval DEP${1}FLAGS=\$_flags
3285     fi
3286 }
3287
3288 probe_cc cc "$cc"
3289 cflags_filter=$_flags_filter
3290 cflags_speed=$_cflags_speed
3291 cflags_size=$_cflags_size
3292 cflags_noopt=$_cflags_noopt
3293 add_cflags $_flags $_cflags
3294 cc_ldflags=$_ldflags
3295 set_ccvars CC
3296
3297 probe_cc hostcc "$host_cc"
3298 host_cflags_filter=$_flags_filter
3299 add_host_cflags  $_flags $_cflags
3300 set_ccvars HOSTCC
3301
3302 test -n "$cc_type" && enable $cc_type ||
3303     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3304
3305 : ${as_default:=$cc}
3306 : ${objcc_default:=$cc}
3307 : ${dep_cc_default:=$cc}
3308 : ${ld_default:=$cc}
3309 : ${host_ld_default:=$host_cc}
3310 set_default ar as objcc dep_cc ld host_ld
3311
3312 probe_cc as "$as"
3313 asflags_filter=$_flags_filter
3314 add_asflags $_flags $_cflags
3315 set_ccvars AS
3316
3317 probe_cc objcc "$objcc"
3318 objcflags_filter=$_flags_filter
3319 add_objcflags $_flags $_cflags
3320 set_ccvars OBJC
3321
3322 probe_cc ld "$ld"
3323 ldflags_filter=$_flags_filter
3324 add_ldflags $_flags $_ldflags
3325 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3326 LD_O=${_ld_o-$LD_O}
3327 LD_LIB=${_ld_lib-$LD_LIB}
3328 LD_PATH=${_ld_path-$LD_PATH}
3329
3330 probe_cc hostld "$host_ld"
3331 host_ldflags_filter=$_flags_filter
3332 add_host_ldflags $_flags $_ldflags
3333 HOSTLD_O=${_ld_o-$HOSTLD_O}
3334
3335 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3336     probe_cc depcc "$dep_cc"
3337     CCDEP=${_DEPCMD:-$DEPCMD}
3338     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3339     DEPCCFLAGS=$_flags
3340 fi
3341
3342 if $ar 2>&1 | grep -q Microsoft; then
3343     arflags="-nologo"
3344     ar_o='-out:$@'
3345 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3346     arflags="rq"
3347     ar_o='$@'
3348 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3349     arflags='-Xany -r -c'
3350     ar_o='$@'
3351 else
3352     arflags="rc"
3353     ar_o='$@'
3354 fi
3355
3356 add_cflags $extra_cflags
3357 add_objcflags $extra_objcflags
3358 add_asflags $extra_cflags
3359
3360 if test -n "$sysroot"; then
3361     case "$cc_type" in
3362         gcc|llvm_gcc|clang)
3363             add_cppflags --sysroot="$sysroot"
3364             add_ldflags --sysroot="$sysroot"
3365         ;;
3366         tms470)
3367             add_cppflags -I"$sysinclude"
3368             add_ldflags  --sysroot="$sysroot"
3369         ;;
3370     esac
3371 fi
3372
3373 if test "$cpu" = host; then
3374     enabled cross_compile &&
3375         die "--cpu=host makes no sense when cross-compiling."
3376
3377     case "$cc_type" in
3378         gcc|llvm_gcc)
3379             check_native(){
3380                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3381                 sed -n "/cc1.*$1=/{
3382                             s/.*$1=\\([^ ]*\\).*/\\1/
3383                             p
3384                             q
3385                         }" $TMPE
3386             }
3387             cpu=$(check_native -march || check_native -mcpu)
3388         ;;
3389     esac
3390
3391     test "${cpu:-host}" = host &&
3392         die "--cpu=host not supported with compiler $cc"
3393 fi
3394
3395 # Deal with common $arch aliases
3396 case "$arch" in
3397     aarch64|arm64)
3398         arch="aarch64"
3399     ;;
3400     arm*)
3401         arch="arm"
3402     ;;
3403     mips*|IP*)
3404         case "$arch" in
3405         *el)
3406             add_cppflags -EL
3407             add_ldflags -EL
3408         ;;
3409         *eb)
3410             add_cppflags -EB
3411             add_ldflags -EB
3412         ;;
3413         esac
3414         arch="mips"
3415     ;;
3416     parisc*|hppa*)
3417         arch="parisc"
3418     ;;
3419     "Power Macintosh"|ppc*|powerpc*)
3420         arch="ppc"
3421     ;;
3422     s390|s390x)
3423         arch="s390"
3424     ;;
3425     sh4|sh)
3426         arch="sh4"
3427     ;;
3428     sun4u|sparc*)
3429         arch="sparc"
3430     ;;
3431     tilegx|tile-gx)
3432         arch="tilegx"
3433     ;;
3434     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3435         arch="x86"
3436     ;;
3437 esac
3438
3439 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3440 enable $arch
3441
3442 # Add processor-specific flags
3443 if enabled aarch64; then
3444
3445     case $cpu in
3446         armv*)
3447             cpuflags="-march=$cpu"
3448         ;;
3449         *)
3450             cpuflags="-mcpu=$cpu"
3451         ;;
3452     esac
3453
3454 elif enabled alpha; then
3455
3456     cpuflags="-mcpu=$cpu"
3457
3458 elif enabled arm; then
3459
3460     check_arm_arch() {
3461         check_cpp_condition stddef.h \
3462             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3463             $cpuflags
3464     }
3465
3466     probe_arm_arch() {
3467         if   check_arm_arch 4;        then echo armv4
3468         elif check_arm_arch 4T;       then echo armv4t
3469         elif check_arm_arch 5;        then echo armv5
3470         elif check_arm_arch 5E;       then echo armv5e
3471         elif check_arm_arch 5T;       then echo armv5t
3472         elif check_arm_arch 5TE;      then echo armv5te
3473         elif check_arm_arch 5TEJ;     then echo armv5te
3474         elif check_arm_arch 6;        then echo armv6
3475         elif check_arm_arch 6J;       then echo armv6j
3476         elif check_arm_arch 6K;       then echo armv6k
3477         elif check_arm_arch 6Z;       then echo armv6z
3478         elif check_arm_arch 6ZK;      then echo armv6zk
3479         elif check_arm_arch 6T2;      then echo armv6t2
3480         elif check_arm_arch 7;        then echo armv7
3481         elif check_arm_arch 7A  7_A;  then echo armv7-a
3482         elif check_arm_arch 7S;       then echo armv7-a
3483         elif check_arm_arch 7R  7_R;  then echo armv7-r
3484         elif check_arm_arch 7M  7_M;  then echo armv7-m
3485         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3486         elif check_arm_arch 8A  8_A;  then echo armv8-a
3487         fi
3488     }
3489
3490     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3491
3492     case $cpu in
3493         armv*)
3494             cpuflags="-march=$cpu"
3495             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3496         ;;
3497         *)
3498             cpuflags="-mcpu=$cpu"
3499             case $cpu in
3500                 cortex-a*)                               subarch=armv7a  ;;
3501                 cortex-r*)                               subarch=armv7r  ;;
3502                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3503                 arm11*)                                  subarch=armv6   ;;
3504                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3505                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3506                 *)                             subarch=$(probe_arm_arch) ;;
3507             esac
3508         ;;
3509     esac
3510
3511     case "$subarch" in
3512         armv5t*)    enable fast_clz                ;;
3513         armv[6-8]*) enable fast_clz fast_unaligned ;;
3514     esac
3515
3516 elif enabled avr32; then
3517
3518     case $cpu in
3519         ap7[02]0[0-2])
3520             subarch="avr32_ap"
3521             cpuflags="-mpart=$cpu"
3522         ;;
3523         ap)
3524             subarch="avr32_ap"
3525             cpuflags="-march=$cpu"
3526         ;;
3527         uc3[ab]*)
3528             subarch="avr32_uc"
3529             cpuflags="-mcpu=$cpu"
3530         ;;
3531         uc)
3532             subarch="avr32_uc"
3533             cpuflags="-march=$cpu"
3534         ;;
3535     esac
3536
3537 elif enabled bfin; then
3538
3539     cpuflags="-mcpu=$cpu"
3540
3541 elif enabled mips; then
3542
3543     cpuflags="-march=$cpu"
3544
3545 elif enabled ppc; then
3546
3547     disable ldbrx
3548
3549     case $(tolower $cpu) in
3550         601|ppc601|powerpc601)
3551             cpuflags="-mcpu=601"
3552             disable altivec
3553         ;;
3554         603*|ppc603*|powerpc603*)
3555             cpuflags="-mcpu=603"
3556             disable altivec
3557         ;;
3558         604*|ppc604*|powerpc604*)
3559             cpuflags="-mcpu=604"
3560             disable altivec
3561         ;;
3562         g3|75*|ppc75*|powerpc75*)
3563             cpuflags="-mcpu=750"
3564             disable altivec
3565         ;;
3566         g4|745*|ppc745*|powerpc745*)
3567             cpuflags="-mcpu=7450"
3568             disable vsx
3569         ;;
3570         74*|ppc74*|powerpc74*)
3571             cpuflags="-mcpu=7400"
3572             disable vsx
3573         ;;
3574         g5|970|ppc970|powerpc970)
3575             cpuflags="-mcpu=970"
3576             disable vsx
3577         ;;
3578         power[3-6]*)
3579             cpuflags="-mcpu=$cpu"
3580             disable vsx
3581         ;;
3582         power[7-8]*)
3583             cpuflags="-mcpu=$cpu"
3584             enable ldbrx
3585         ;;
3586         cell)
3587             cpuflags="-mcpu=cell"
3588             enable ldbrx
3589             disable vsx
3590         ;;
3591         e500mc)
3592             cpuflags="-mcpu=e500mc"
3593             disable altivec
3594         ;;
3595         e500v2)
3596             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3597             disable altivec
3598             disable dcbzl
3599         ;;
3600         e500)
3601             cpuflags="-mcpu=8540 -mhard-float"
3602             disable altivec
3603             disable dcbzl
3604         ;;
3605     esac
3606
3607 elif enabled sparc; then
3608
3609     case $cpu in
3610         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3611             cpuflags="-mcpu=$cpu"
3612         ;;
3613         ultrasparc*|niagara[234])
3614             cpuflags="-mcpu=$cpu"
3615         ;;
3616     esac
3617
3618 elif enabled x86; then
3619
3620     case $cpu in
3621         i[345]86|pentium)
3622             cpuflags="-march=$cpu"
3623             disable i686
3624             disable mmx
3625         ;;
3626         # targets that do NOT support nopl and conditional mov (cmov)
3627         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3628             cpuflags="-march=$cpu"
3629             disable i686
3630         ;;
3631         # targets that do support nopl and conditional mov (cmov)
3632         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3633             cpuflags="-march=$cpu"
3634             enable i686
3635             enable fast_cmov
3636         ;;
3637         # targets that do support conditional mov but on which it's slow
3638         pentium4|pentium4m|prescott|nocona)
3639             cpuflags="-march=$cpu"
3640             enable i686
3641             disable fast_cmov
3642         ;;
3643     esac
3644
3645 fi
3646
3647 if [ "$cpu" != generic ]; then
3648     add_cflags  $cpuflags
3649     add_asflags $cpuflags
3650     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3651 fi
3652
3653 # compiler sanity check
3654 check_exec <<EOF
3655 int main(void){ return 0; }
3656 EOF
3657 if test "$?" != 0; then
3658     echo "$cc is unable to create an executable file."
3659     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3660         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3661         echo "Only do this if you know what cross compiling means."
3662     fi
3663     die "C compiler test failed."
3664 fi
3665
3666 add_cppflags -D_ISOC99_SOURCE
3667 check_cflags -std=c99
3668 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3669 #include <stdlib.h>
3670 EOF
3671 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3672 #include <stdlib.h>
3673 EOF
3674
3675 add_host_cppflags -D_ISOC99_SOURCE
3676 check_host_cflags -std=c99
3677 check_host_cflags -Wall
3678 check_host_cflags -O3
3679
3680 check_64bit(){
3681     arch32=$1
3682     arch64=$2
3683     expr=$3
3684     check_code cc "" "int test[2*($expr) - 1]" &&
3685         subarch=$arch64 || subarch=$arch32
3686 }
3687
3688 case "$arch" in
3689     aarch64|alpha|ia64)
3690         spic=$shared
3691     ;;
3692     mips)
3693         check_64bit mips mips64 '_MIPS_SIM > 1'
3694         spic=$shared
3695     ;;
3696     parisc)
3697         check_64bit parisc parisc64 'sizeof(void *) > 4'
3698         spic=$shared
3699     ;;
3700     ppc)
3701         check_64bit ppc ppc64 'sizeof(void *) > 4'
3702         spic=$shared
3703     ;;
3704     s390)
3705         check_64bit s390 s390x 'sizeof(void *) > 4'
3706         spic=$shared
3707     ;;
3708     sparc)
3709         check_64bit sparc sparc64 'sizeof(void *) > 4'
3710         spic=$shared
3711     ;;
3712     x86)
3713         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3714         if test "$subarch" = "x86_64"; then
3715             spic=$shared
3716         fi
3717     ;;
3718 esac
3719
3720 enable $subarch
3721 enabled spic && enable_weak pic
3722
3723 # OS specific
3724 case $target_os in
3725     aix)
3726         SHFLAGS=-shared
3727         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3728         enabled shared && add_ldflags -Wl,-brtl
3729         ;;
3730     android)
3731         disable symver
3732         enable section_data_rel_ro
3733         SLIB_INSTALL_NAME='$(SLIBNAME)'
3734         SLIB_INSTALL_LINKS=
3735         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3736         ;;
3737     haiku)
3738         prefix_default="/boot/common"
3739         network_extralibs="-lnetwork"
3740         host_libs=
3741         ;;
3742     sunos)
3743         SHFLAGS='-shared -Wl,-h,$$(@F)'
3744         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3745         network_extralibs="-lsocket -lnsl"
3746         # When using suncc to build, the Solaris linker will mark
3747         # an executable with each instruction set encountered by
3748         # the Solaris assembler.  As our libraries contain their own
3749         # guards for processor-specific code, instead suppress
3750         # generation of the HWCAPS ELF section on Solaris x86 only.
3751         enabled_all suncc x86 &&
3752             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3753             add_ldflags -Wl,-M,mapfile
3754         nm_default='nm -P -g'
3755         version_script='-M'
3756         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3757         ;;
3758     netbsd)
3759         disable symver
3760         oss_indev_extralibs="-lossaudio"
3761         oss_outdev_extralibs="-lossaudio"
3762         ;;
3763     openbsd|bitrig)
3764         disable symver
3765         SHFLAGS='-shared'
3766         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3767         SLIB_INSTALL_LINKS=
3768         oss_indev_extralibs="-lossaudio"
3769         oss_outdev_extralibs="-lossaudio"
3770         ;;
3771     dragonfly)
3772         disable symver
3773         ;;
3774     freebsd)
3775         ;;
3776     bsd/os)
3777         add_extralibs -lpoll -lgnugetopt
3778         ;;
3779     darwin)
3780         enabled ppc && add_asflags -force_cpusubtype_ALL
3781         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3782         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3783         add_ldflags -Wl,-dynamic,-search_paths_first
3784         SLIBSUF=".dylib"
3785         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3786         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3787         objformat="macho"
3788         enabled x86_64 && objformat="macho64"
3789         enabled_any pic shared ||
3790             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3791         check_header dispatch/dispatch.h &&
3792             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3793         ;;
3794     msys*)
3795         die "Native MSYS builds are discouraged, please use the MINGW environment."
3796         ;;
3797     mingw32*|mingw64*)
3798         if test $target_os = "mingw32ce"; then
3799             disable network
3800         else
3801             target_os=mingw32
3802         fi
3803         LIBTARGET=i386
3804         if enabled x86_64; then
3805             LIBTARGET="i386:x86-64"
3806         elif enabled arm; then
3807             LIBTARGET=arm-wince
3808         fi
3809         check_ldflags -Wl,--nxcompat
3810         check_ldflags -Wl,--dynamicbase
3811         shlibdir_default="$bindir_default"
3812         SLIBPREF=""
3813         SLIBSUF=".dll"
3814         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3815         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3816         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3817         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3818         SLIB_INSTALL_LINKS=
3819         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3820         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3821         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3822         objformat="win32"
3823         dlltool="${cross_prefix}dlltool"
3824         ranlib=:
3825         enable dos_paths
3826         ;;
3827     win32|win64)
3828         disable symver
3829         if enabled shared; then
3830             # Link to the import library instead of the normal static library
3831             # for shared libs.
3832             LD_LIB='%.lib'
3833             # Cannot build both shared and static libs with MSVC or icl.
3834             disable static
3835         fi
3836         shlibdir_default="$bindir_default"
3837         SLIBPREF=""
3838         SLIBSUF=".dll"
3839         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3840         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3841         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3842         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3843         SLIB_INSTALL_LINKS=
3844         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3845         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3846         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3847         objformat="win32"
3848         ranlib=:
3849         enable dos_paths
3850         ;;
3851     cygwin*)
3852         target_os=cygwin
3853         shlibdir_default="$bindir_default"
3854         SLIBPREF="cyg"
3855         SLIBSUF=".dll"
3856         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3857         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3858         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3859         SLIB_INSTALL_LINKS=
3860         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3861         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3862         objformat="win32"
3863         enable dos_paths
3864         ;;
3865     *-dos|freedos|opendos)
3866         network_extralibs="-lsocket"
3867         objformat="coff"
3868         enable dos_paths
3869         add_cppflags -U__STRICT_ANSI__
3870         ;;
3871     linux)
3872         enable dv1394
3873         enable section_data_rel_ro
3874         ;;
3875     irix*)
3876         target_os=irix
3877         ranlib="echo ignoring ranlib"
3878         ;;
3879     os/2*)
3880         ln_s="cp -f"
3881         objformat="aout"
3882         add_cppflags -D_GNU_SOURCE
3883         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3884         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3885         LIBSUF="_s.a"
3886         SLIBPREF=""
3887         SLIBSUF=".dll"
3888         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3889         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3890         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3891             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3892             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3893             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3894             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3895         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3896             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3897         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3898         enable dos_paths
3899         ;;
3900     gnu/kfreebsd)
3901         add_cppflags -D_BSD_SOURCE
3902         ;;
3903     gnu)
3904         ;;
3905     qnx)
3906         add_cppflags -D_QNX_SOURCE
3907         network_extralibs="-lsocket"
3908         ;;
3909     symbian)
3910         SLIBSUF=".dll"
3911         enable dos_paths
3912         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3913         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3914         add_ldflags -Wl,--target1-abs,--no-undefined \
3915                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3916                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3917         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3918                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3919                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3920         ;;
3921     osf1)
3922         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3923         ;;
3924     minix)
3925         ;;
3926     plan9)
3927         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3928                      -D_REENTRANT_SOURCE        \
3929                      -D_RESEARCH_SOURCE         \
3930                      -DFD_SETSIZE=96            \
3931                      -DHAVE_SOCK_OPTS
3932         add_compat strtod.o strtod=avpriv_strtod
3933         network_extralibs='-lbsd'
3934         exeobjs=compat/plan9/main.o
3935         cp_f='cp'
3936         ;;
3937     none)
3938         ;;
3939     *)
3940         die "Unknown OS '$target_os'."
3941         ;;
3942 esac
3943
3944 # determine libc flavour
3945
3946 probe_libc(){
3947     pfx=$1
3948     pfx_no_=${pfx%_}
3949     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3950     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3951         eval ${pfx}libc_type=uclibc
3952         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3953     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3954         eval ${pfx}libc_type=glibc
3955         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3956     # MinGW headers can be installed on Cygwin, so check for newlib first.
3957     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3958         eval ${pfx}libc_type=newlib
3959         add_${pfx}cppflags -U__STRICT_ANSI__
3960     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3961     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3962         eval ${pfx}libc_type=mingw64
3963         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3964         eval test \$${pfx_no_}cc_type = "gcc" &&
3965             add_${pfx}cppflags -D__printf__=__gnu_printf__
3966     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3967          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3968         eval ${pfx}libc_type=mingw32
3969         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3970             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3971             die "ERROR: MinGW32 runtime version must be >= 3.15."
3972         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3973         eval test \$${pfx_no_}cc_type = "gcc" &&
3974             add_${pfx}cppflags -D__printf__=__gnu_printf__
3975     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3976         eval ${pfx}libc_type=msvcrt
3977         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
3978             if [ "$pfx" = host_ ]; then
3979                 add_host_cppflags -Dsnprintf=_snprintf
3980             else
3981                 add_compat strtod.o strtod=avpriv_strtod
3982                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3983                                              _snprintf=avpriv_snprintf  \
3984                                              vsnprintf=avpriv_vsnprintf
3985             fi
3986         fi
3987         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3988         # 0x601 by default unless something else is set by the user.
3989         # This can easily lead to us detecting functions only present
3990         # in such new versions and producing binaries requiring windows 7.0.
3991         # Therefore explicitly set the default to XP unless the user has
3992         # set something else on the command line.
3993         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
3994         # family. For these cases, configure is free to use any functions
3995         # found in the SDK headers by default. (Alternatively, we could force
3996         # _WIN32_WINNT to 0x0602 in that case.)
3997         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3998             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
3999 #ifdef WINAPI_FAMILY
4000 #include <winapifamily.h>
4001 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4002 #error not desktop
4003 #endif
4004 #endif
4005 EOF
4006     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4007         eval ${pfx}libc_type=klibc
4008     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4009         eval ${pfx}libc_type=bionic
4010     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4011         eval ${pfx}libc_type=solaris
4012         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4013     else
4014         eval ${pfx}libc_type=default
4015         add_${pfx}cppflags -D_DEFAULT_SOURCE
4016     fi
4017 }
4018
4019 probe_libc
4020 test -n "$libc_type" && enable libc_$libc_type
4021 probe_libc host_
4022 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4023
4024 case $libc_type in
4025     bionic)
4026         add_compat strtod.o strtod=avpriv_strtod
4027         ;;
4028 esac
4029
4030 # hacks for compiler/libc/os combinations
4031
4032 if enabled_all tms470 libc_glibc; then
4033     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4034     add_cppflags -D__USER_LABEL_PREFIX__=
4035     add_cppflags -D__builtin_memset=memset
4036     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4037     add_cflags   -pds=48    # incompatible redefinition of macro
4038 fi
4039
4040 if enabled_all ccc libc_glibc; then
4041     add_ldflags -Wl,-z,now  # calls to libots crash without this
4042 fi
4043
4044 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4045     add_cppflags '-I\$(SRC_PATH)/compat/float'
4046
4047 esc(){
4048     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4049 }
4050
4051 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
4052
4053 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4054
4055 set_default $PATHS_LIST
4056 set_default nm
4057
4058 # we need to build at least one lib type
4059 if ! enabled_any static shared; then
4060     cat <<EOF
4061 At least one library type must be built.
4062 Specify --enable-static to build the static libraries or --enable-shared to
4063 build the shared libraries as well. To only build the shared libraries specify
4064 --disable-static in addition to --enable-shared.
4065 EOF
4066     exit 1
4067 fi
4068
4069 die_license_disabled() {
4070     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4071 }
4072
4073 die_license_disabled gpl libcdio
4074 die_license_disabled gpl libx264
4075 die_license_disabled gpl libx265
4076 die_license_disabled gpl libxavs
4077 die_license_disabled gpl libxvid
4078 die_license_disabled gpl x11grab
4079
4080 die_license_disabled nonfree cuda
4081 die_license_disabled nonfree libfaac
4082 die_license_disabled nonfree libfdk_aac
4083 die_license_disabled nonfree libnpp
4084 die_license_disabled nonfree openssl
4085
4086 die_license_disabled version3 libopencore_amrnb
4087 die_license_disabled version3 libopencore_amrwb
4088 die_license_disabled version3 libvo_aacenc
4089 die_license_disabled version3 libvo_amrwbenc
4090
4091 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4092
4093 disabled optimizations || check_cflags -fomit-frame-pointer
4094
4095 enable_weak_pic() {
4096     disabled pic && return
4097     enable pic
4098     add_cppflags -DPIC
4099     case "$target_os" in
4100     mingw*|cygwin*)
4101         ;;
4102     *)
4103         add_cflags -fPIC
4104         ;;
4105     esac
4106     add_asflags  -fPIC
4107 }
4108
4109 enabled pic && enable_weak_pic
4110
4111 check_cc <<EOF || die "Symbol mangling check failed."
4112 int ff_extern;
4113 EOF
4114 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4115 extern_prefix=${sym%%ff_extern*}
4116
4117 check_cc <<EOF && enable_weak inline_asm
4118 void foo(void) { __asm__ volatile ("" ::); }
4119 EOF
4120
4121 _restrict=
4122 for restrict_keyword in restrict __restrict__ __restrict; do
4123     check_cc <<EOF && _restrict=$restrict_keyword && break
4124 void foo(char * $restrict_keyword p);
4125 EOF
4126 done
4127
4128 check_cc <<EOF && enable pragma_deprecated
4129 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4130 EOF
4131
4132 check_cc <<EOF && enable attribute_packed
4133 struct { int x; } __attribute__((packed)) x;
4134 EOF
4135
4136 check_cc <<EOF && enable attribute_may_alias
4137 union { int x; } __attribute__((may_alias)) x;
4138 EOF
4139
4140 check_cc <<EOF || die "endian test failed"
4141 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4142 EOF
4143 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4144
4145 check_gas() {
4146     log "check_gas using '$as' as AS"
4147     # :vararg is used on aarch64, arm and ppc altivec
4148     check_as <<EOF || return 1
4149 .macro m n, y:vararg=0
4150 \n: .int \y
4151 .endm
4152 m x
4153 EOF
4154     # .altmacro is only used in arm asm
4155     ! enabled arm || check_as <<EOF || return 1
4156 .altmacro
4157 EOF
4158     enable gnu_as
4159     return 0
4160 }
4161
4162 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4163     nogas=:
4164     enabled_any arm aarch64 && nogas=die
4165     enabled_all ppc altivec && nogas=warn
4166     as_noop=-v
4167
4168     case $as_type in
4169         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4170         gcc)  gaspp_as_type=gas ;;
4171         *)    gaspp_as_type=$as_type ;;
4172     esac
4173
4174     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4175
4176     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4177         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4178
4179     if ! check_gas ; then
4180         as=${gas:=$as}
4181         check_gas || \
4182             $nogas "GNU assembler not found, install/update gas-preprocessor"
4183     fi
4184
4185     check_as <<EOF && enable as_func
4186 .func test
4187 .endfunc
4188 EOF
4189 fi
4190
4191 check_inline_asm inline_asm_labels '"1:\n"'
4192
4193 if enabled aarch64; then
4194     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4195     # internal assembler in clang 3.3 does not support this instruction
4196     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4197     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4198
4199     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4200
4201 elif enabled alpha; then
4202
4203     check_cflags -mieee
4204
4205 elif enabled arm; then
4206
4207     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4208     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4209     enabled thumb && check_cflags -mthumb || check_cflags -marm
4210
4211     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4212         enable vfp_args
4213     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4214         enable vfp_args
4215     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4216         case "${cross_prefix:-$cc}" in
4217             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4218             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4219 __asm__ (".eabi_attribute 28, 1");
4220 int main(void) { return 0; }
4221 EOF
4222         esac
4223         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4224     fi
4225
4226     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4227     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4228     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4229     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4230     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4231     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4232
4233     [ $target_os = linux ] || [ $target_os = android ] ||
4234         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4235             $ARCH_EXT_LIST_ARM
4236
4237     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4238
4239     check_as <<EOF && enable as_dn_directive
4240 ra .dn d0.i16
4241 .unreq ra
4242 EOF
4243
4244     # llvm's integrated assembler supports .object_arch from llvm 3.5
4245     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4246 .object_arch armv4
4247 EOF
4248
4249     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4250
4251 elif enabled mips; then
4252
4253     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4254
4255     # make sure that only an instruction set is enabled
4256     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4257
4258     if enabled mips64; then
4259         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4260             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4261                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4262     else
4263         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4264             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4265                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4266     fi
4267
4268 elif enabled parisc; then
4269
4270     if enabled gcc; then
4271         case $($cc -dumpversion) in
4272             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4273         esac
4274     fi
4275
4276 elif enabled ppc; then
4277
4278     enable local_aligned_8 local_aligned_16
4279
4280     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4281     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4282     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4283     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4284
4285     # AltiVec flags: The FSF version of GCC differs from the Apple version
4286     if enabled altivec; then
4287         check_cflags -maltivec -mabi=altivec &&
4288         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4289         check_cflags -faltivec
4290
4291         # check if our compiler supports Motorola AltiVec C API
4292         check_cc <<EOF || disable altivec
4293 $inc_altivec_h
4294 int main(void) {
4295     vector signed int v1 = (vector signed int) { 0 };
4296     vector signed int v2 = (vector signed int) { 1 };
4297     v1 = vec_add(v1, v2);
4298     return 0;
4299 }
4300 EOF
4301
4302         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4303     fi
4304
4305     if enabled vsx; then
4306         check_cflags -mvsx &&
4307         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4308     fi
4309
4310     if enabled power8; then
4311         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4312     fi
4313
4314 elif enabled x86; then
4315
4316     check_builtin rdtsc    intrin.h   "__rdtsc()"
4317     check_builtin mm_empty mmintrin.h "_mm_empty()"
4318
4319     enable local_aligned_8 local_aligned_16
4320
4321     # check whether EBP is available on x86
4322     # As 'i' is stored on the stack, this program will crash
4323     # if the base pointer is used to access it because the
4324     # base pointer is cleared in the inline assembly code.
4325     check_exec_crash <<EOF && enable ebp_available
4326 volatile int i=0;
4327 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4328 return i;
4329 EOF
4330
4331     # check whether EBX is available on x86
4332     check_inline_asm ebx_available '""::"b"(0)' &&
4333         check_inline_asm ebx_available '"":::"%ebx"'
4334
4335     # check whether xmm clobbers are supported
4336     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4337
4338     # check whether binutils is new enough to compile SSSE3/MMXEXT
4339     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4340     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4341
4342     if ! disabled_any asm mmx yasm; then
4343         if check_cmd $yasmexe --version; then
4344             enabled x86_64 && yasm_extra="-m amd64"
4345             yasm_debug="-g dwarf2"
4346         elif check_cmd nasm -v; then
4347             yasmexe=nasm
4348             yasm_debug="-g -F dwarf"
4349             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4350         fi
4351
4352         YASMFLAGS="-f $objformat $yasm_extra"
4353         enabled pic               && append YASMFLAGS "-DPIC"
4354         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4355         case "$objformat" in
4356             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4357         esac
4358
4359         check_yasm "movbe ecx, [5]" && enable yasm ||
4360             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4361         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4362         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4363         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4364         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4365         check_yasm "CPU amdnop" || disable cpunop
4366     fi
4367
4368     case "$cpu" in
4369         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4370             disable fast_clz
4371         ;;
4372     esac
4373
4374 fi
4375
4376 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4377
4378 check_ldflags -Wl,--as-needed
4379
4380 if check_func dlopen; then
4381     ldl=
4382 elif check_func dlopen -ldl; then
4383     ldl=-ldl
4384 fi
4385
4386 if ! disabled network; then
4387     check_func getaddrinfo $network_extralibs
4388     check_func inet_aton $network_extralibs
4389
4390     check_type netdb.h "struct addrinfo"
4391     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4392     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4393     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4394     check_type poll.h "struct pollfd"
4395     check_type netinet/sctp.h "struct sctp_event_subscribe"
4396     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4397     check_type netinet/in.h "struct sockaddr_in6"
4398     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4399     check_type "sys/types.h sys/socket.h" socklen_t
4400
4401     # Prefer arpa/inet.h over winsock2
4402     if check_header arpa/inet.h ; then
4403         check_func closesocket
4404     elif check_header winsock2.h ; then
4405         check_func_headers winsock2.h closesocket -lws2 &&
4406             network_extralibs="-lws2" ||
4407         { check_func_headers winsock2.h closesocket -lws2_32 &&
4408             network_extralibs="-lws2_32"; } || disable winsock2_h network
4409         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4410
4411         check_type ws2tcpip.h socklen_t
4412         check_type ws2tcpip.h "struct addrinfo"
4413         check_type ws2tcpip.h "struct group_source_req"
4414         check_type ws2tcpip.h "struct ip_mreq_source"
4415         check_type ws2tcpip.h "struct ipv6_mreq"
4416         check_type winsock2.h "struct pollfd"
4417         check_struct winsock2.h "struct sockaddr" sa_len
4418         check_type ws2tcpip.h "struct sockaddr_in6"
4419         check_type ws2tcpip.h "struct sockaddr_storage"
4420     else
4421         disable network
4422     fi
4423 fi
4424
4425 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4426 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4427 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4428 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4429
4430 case "$custom_allocator" in
4431     jemalloc)
4432         # jemalloc by default does not use a prefix
4433         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4434     ;;
4435     tcmalloc)
4436         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
4437         malloc_prefix=tc_
4438     ;;
4439 esac
4440
4441 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4442 check_func  ${malloc_prefix}memalign            && enable memalign
4443 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4444
4445 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4446     check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4447
4448 check_func  fcntl
4449 check_func  fork
4450 check_func  gethrtime
4451 check_func  getopt
4452 check_func  getrusage
4453 check_func  gettimeofday
4454 check_func  gmtime_r
4455 check_func  isatty
4456 check_func  localtime_r
4457 check_func  mach_absolute_time
4458 check_func  mkstemp
4459 check_func  mmap
4460 check_func  mprotect
4461 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4462 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4463 check_func  sched_getaffinity
4464 check_func  setrlimit
4465 check_func  strerror_r
4466 check_func  sysconf
4467 check_func  sysctl
4468 check_func  usleep
4469
4470 check_func_headers io.h setmode
4471 check_func_headers stdlib.h getenv
4472
4473 check_func_headers windows.h CoTaskMemFree -lole32
4474 check_func_headers windows.h GetProcessAffinityMask
4475 check_func_headers windows.h GetProcessTimes
4476 check_func_headers windows.h GetSystemTimeAsFileTime
4477 check_func_headers windows.h LoadLibrary
4478 check_func_headers windows.h MapViewOfFile
4479 check_func_headers windows.h SetConsoleTextAttribute
4480 check_func_headers windows.h Sleep
4481 check_func_headers windows.h VirtualAlloc
4482 check_struct windows.h "CONDITION_VARIABLE" Ptr
4483
4484 check_header direct.h
4485 check_header dlfcn.h
4486 check_header d3d11.h
4487 check_header dxva.h
4488 check_header dxva2api.h
4489 check_header io.h
4490 check_header mach/mach_time.h
4491 check_header malloc.h
4492 check_header poll.h
4493 check_header sys/mman.h
4494 check_header sys/param.h
4495 check_header sys/resource.h
4496 check_header sys/select.h
4497 check_header sys/time.h
4498 check_header sys/un.h
4499 check_header unistd.h
4500 check_header valgrind/valgrind.h
4501 check_header vdpau/vdpau.h
4502 check_header vdpau/vdpau_x11.h
4503 check_header VideoDecodeAcceleration/VDADecoder.h
4504 check_header windows.h
4505 check_header X11/extensions/XvMClib.h
4506
4507 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4508 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4509 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4510
4511 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4512
4513 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4514 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4515 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4516
4517 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4518 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4519 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4520 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4521
4522 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4523
4524 if ! disabled w32threads && ! enabled pthreads; then
4525     check_func_headers "windows.h process.h" _beginthreadex &&
4526         enable w32threads || disable w32threads
4527 fi
4528
4529 # check for some common methods of building with pthread support
4530 # do this before the optional library checks as some of them require pthreads
4531 if ! disabled pthreads && ! enabled w32threads; then
4532     enable pthreads
4533     if check_func pthread_join -pthread; then
4534         add_cflags -pthread
4535         add_extralibs -pthread
4536     elif check_func pthread_join -pthreads; then
4537         add_cflags -pthreads
4538         add_extralibs -pthreads
4539     elif check_func pthread_join -lpthreadGC2; then
4540         add_extralibs -lpthreadGC2
4541     elif check_lib pthread.h pthread_join -lpthread; then
4542         :
4543     elif ! check_func pthread_join; then
4544         disable pthreads
4545     fi
4546 fi
4547
4548 enabled pthreads &&
4549     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
4550
4551 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4552 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4553
4554 check_lib math.h sin -lm && LIBM="-lm"
4555 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4556
4557 atan2f_args=2
4558 ldexpf_args=2
4559 powf_args=2
4560
4561 for func in $MATH_FUNCS; do
4562     eval check_mathfunc $func \${${func}_args:-1}
4563 done
4564
4565 # these are off by default, so fail if requested and not available
4566 enabled avisynth          && { check_lib2 "avisynth/avisynth_c.h windows.h" LoadLibrary ||
4567                                check_lib2 "avxsynth/avxsynth_c.h dlfcn.h" dlopen -ldl   ||
4568                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4569 enabled cuda              && check_lib cuda.h cuInit -lcuda
4570 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4571 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4572 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4573 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4574 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4575 enabled libfdk_aac        && require_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4576 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4577 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4578 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4579                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4580                                done || die "ERROR: libgsm not found"; }
4581 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4582 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4583 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
4584 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4585 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4586 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4587 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4588 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4589 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
4590 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4591                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4592 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4593 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4594 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4595 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4596 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
4597 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4598 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4599 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4600 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4601 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4602 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4603 enabled libvpx            && require_pkg_config "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version && {
4604     enabled libvpx_vp8_decoder && {
4605         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
4606             disable libvpx_vp8_decoder;
4607     }
4608     enabled libvpx_vp8_encoder && {
4609         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
4610             disable libvpx_vp8_encoder;
4611     }
4612     enabled libvpx_vp9_decoder && {
4613         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
4614             disable libvpx_vp9_decoder;
4615     }
4616     enabled libvpx_vp9_encoder && {
4617         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
4618             disable libvpx_vp9_encoder;
4619     }
4620     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
4621         die "libvpx enabled but no supported decoders found"
4622     fi
4623 }
4624 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4625 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4626 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4627                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4628                                die "ERROR: libx264 version must be >= 0.118."; } &&
4629                              { check_cpp_condition x264.h "X264_MPEG2" &&
4630                                enable libx262; }
4631 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
4632                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
4633                                die "ERROR: libx265 version must be >= 57."; }
4634 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4635 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4636 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4637                                 { ! enabled cross_compile && {
4638                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
4639                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
4640                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
4641                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
4642                                die "ERROR: mmal not found"; }
4643 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
4644 enabled omx_rpi && enable omx
4645 enabled omx               && { check_header OMX_Core.h ||
4646                                 { ! enabled cross_compile && enabled omx_rpi && {
4647                                     add_cflags -isystem/opt/vc/include/IL ; }
4648                                 check_header OMX_Core.h ; } ||
4649                                die "ERROR: OpenMAX IL headers not found"; }
4650 enabled openssl           && { check_pkg_config openssl openssl/ssl.h SSL_library_init && {
4651                                add_cflags $openssl_cflags && add_extralibs $openssl_libs; }||
4652                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4653                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4654                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4655                                die "ERROR: openssl not found"; }
4656
4657 if enabled gnutls; then
4658     { check_lib2 gmp.h mpz_export -lgmp && enable gmp; } ||
4659     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4660 fi
4661
4662 # libdc1394 check
4663 if enabled libdc1394; then
4664     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
4665         enable libdc1394_2; } ||
4666     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4667         enable libdc1394_1; } ||
4668     die "ERROR: No version of libdc1394 found "
4669 fi
4670
4671 if enabled nvenc; then
4672     check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."
4673     check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6" ||
4674         die "ERROR: NVENC API version 5 or older is not supported"
4675 fi
4676
4677 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4678     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4679     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4680     enable sdl
4681 fi
4682
4683 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4684 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4685
4686 check_header linux/fb.h
4687 check_header linux/videodev2.h
4688 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4689
4690 check_header AVFoundation/AVFoundation.h &&
4691     check_objcflags -fobjc-arc &&
4692     add_extralibs -framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia ||
4693     disable AVFoundation_AVFoundation_h
4694
4695 check_header sys/videoio.h
4696
4697 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4698 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4699 # w32api 3.12 had it defined wrong
4700 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4701
4702 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4703 { check_header dev/bktr/ioctl_meteor.h &&
4704   check_header dev/bktr/ioctl_bt848.h; } ||
4705 { check_header machine/ioctl_meteor.h &&
4706   check_header machine/ioctl_bt848.h; } ||
4707 { check_header dev/video/meteor/ioctl_meteor.h &&
4708   check_header dev/video/bktr/ioctl_bt848.h; } ||
4709 check_header dev/ic/bt8xx.h
4710
4711 check_header sndio.h
4712 check_header sys/soundcard.h
4713 check_header soundcard.h
4714
4715 enabled_any alsa_indev alsa_outdev &&
4716     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4717
4718 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4719     check_func jack_port_get_latency_range -ljack
4720
4721 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4722
4723 if enabled libcdio; then
4724     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4725     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4726     die "ERROR: No usable libcdio/cdparanoia found"
4727 fi
4728
4729 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4730
4731 if enabled libxcb || enabled x11grab && ! disabled libxcb; then
4732     check_pkg_config xcb-shape xcb/shape.h xcb_shape_rectangles || {
4733         enabled libxcb && die "ERROR: libxcb not found";
4734     } && disable x11grab && enable libxcb
4735
4736     disabled libxcb_shm ||
4737         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
4738             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
4739         } && check_header sys/shm.h && enable libxcb_shm
4740
4741     disabled libxcb_xfixes ||
4742         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
4743             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
4744         } && enable libxcb_xfixes
4745
4746     add_cflags "$xcb_event_cflags $xcb_shm_cflags $xcb_xfixes_cflags"
4747     add_extralibs "$xcb_event_libs $xcb_shm_libs $xcb_xfixes_libs"
4748 fi
4749
4750 if enabled x11grab; then
4751     enabled xlib || die "ERROR: Xlib not found"
4752     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
4753     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
4754 fi
4755
4756 enabled vaapi &&
4757     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
4758     disable vaapi
4759
4760 if enabled vaapi ; then
4761     enabled xlib &&
4762     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
4763     enable vaapi_x11
4764
4765     check_lib2 "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
4766     enable vaapi_drm
4767 fi
4768
4769 enabled vdpau &&
4770     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4771     disable vdpau
4772
4773 enabled vdpau && enabled xlib &&
4774     check_lib2 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4775     enable vdpau_x11
4776
4777 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4778
4779 # add some useful compiler flags if supported
4780 check_cflags -Wdeclaration-after-statement
4781 check_cflags -Wall
4782 check_cflags -Wdisabled-optimization
4783 check_cflags -Wpointer-arith
4784 check_cflags -Wredundant-decls
4785 check_cflags -Wwrite-strings
4786 check_cflags -Wtype-limits
4787 check_cflags -Wundef
4788 check_cflags -Wmissing-prototypes
4789 check_cflags -Wstrict-prototypes
4790 enabled extra_warnings && check_cflags -Winline
4791 enabled extra_warnings && check_cflags -Wcast-qual
4792
4793 check_disable_warning(){
4794     warning_flag=-W${1#-Wno-}
4795     test_cflags $warning_flag && add_cflags $1
4796 }
4797
4798 check_disable_warning -Wno-parentheses
4799 check_disable_warning -Wno-switch
4800 check_disable_warning -Wno-format-zero-length
4801 check_disable_warning -Wno-pointer-sign
4802
4803 # add some linker flags
4804 check_ldflags -Wl,--warn-common
4805 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4806 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
4807 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4808
4809 # add some strip flags
4810 # -wN '..@*' is more selective than -x, but not available everywhere.
4811 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4812
4813 enabled neon_clobber_test &&
4814     check_ldflags -Wl,--wrap,avcodec_open2              \
4815                   -Wl,--wrap,avcodec_decode_audio4      \
4816                   -Wl,--wrap,avcodec_decode_video2      \
4817                   -Wl,--wrap,avcodec_decode_subtitle2   \
4818                   -Wl,--wrap,avcodec_encode_audio2      \
4819                   -Wl,--wrap,avcodec_encode_video2      \
4820                   -Wl,--wrap,avcodec_encode_subtitle    \
4821                   -Wl,--wrap,avresample_convert ||
4822     disable neon_clobber_test
4823
4824 enabled xmm_clobber_test &&
4825     check_ldflags -Wl,--wrap,avcodec_open2              \
4826                   -Wl,--wrap,avcodec_decode_audio4      \
4827                   -Wl,--wrap,avcodec_decode_video2      \
4828                   -Wl,--wrap,avcodec_decode_subtitle2   \
4829                   -Wl,--wrap,avcodec_encode_audio2      \
4830                   -Wl,--wrap,avcodec_encode_video2      \
4831                   -Wl,--wrap,avcodec_encode_subtitle    \
4832                   -Wl,--wrap,avresample_convert         \
4833                   -Wl,--wrap,sws_scale ||
4834     disable xmm_clobber_test
4835
4836 check_ld <<EOF && enable proper_dce
4837 extern const int array[512];
4838 static inline int func(void) { return array[0]; }
4839 int main(void) { return 0; }
4840 EOF
4841