build: Only enable symbol reduction if the compiler does proper DCE
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$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 mdec_decoder_select="blockdsp idctdsp mpegvideo"
1988 metasound_decoder_select="lsp mdct sinewin"
1989 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
1990 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
1991 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
1992 mjpegb_decoder_select="mjpeg_decoder"
1993 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
1994 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
1995 mlp_decoder_select="mlp_parser"
1996 motionpixels_decoder_select="bswapdsp"
1997 mp1_decoder_select="mpegaudio"
1998 mp1float_decoder_select="mpegaudio"
1999 mp2_decoder_select="mpegaudio"
2000 mp2float_decoder_select="mpegaudio"
2001 mp3_decoder_select="mpegaudio"
2002 mp3adu_decoder_select="mpegaudio"
2003 mp3adufloat_decoder_select="mpegaudio"
2004 mp3float_decoder_select="mpegaudio"
2005 mp3on4_decoder_select="mpegaudio"
2006 mp3on4float_decoder_select="mpegaudio"
2007 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2008 mpc8_decoder_select="mpegaudiodsp"
2009 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2010 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2011 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2012 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2013 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2014 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2015 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2016 mpeg4_encoder_select="h263_encoder"
2017 msa1_decoder_select="mss34dsp"
2018 msmpeg4v1_decoder_select="h263_decoder"
2019 msmpeg4v2_decoder_select="h263_decoder"
2020 msmpeg4v2_encoder_select="h263_encoder"
2021 msmpeg4v3_decoder_select="h263_decoder"
2022 msmpeg4v3_encoder_select="h263_encoder"
2023 mss2_decoder_select="error_resilience mpeg_er mpegvideo vc1_decoder"
2024 mts2_decoder_select="mss34dsp"
2025 mxpeg_decoder_select="mjpeg_decoder"
2026 nellymoser_decoder_select="mdct sinewin"
2027 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2028 nuv_decoder_select="idctdsp lzo"
2029 on2avc_decoder_select="mdct"
2030 opus_decoder_deps="avresample"
2031 opus_decoder_select="imdct15"
2032 png_decoder_deps="zlib"
2033 png_encoder_deps="zlib"
2034 png_encoder_select="huffyuvencdsp"
2035 prores_decoder_select="idctdsp"
2036 prores_encoder_select="fdctdsp"
2037 qcelp_decoder_select="lsp"
2038 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2039 ra_144_encoder_select="audio_frame_queue lpc"
2040 ralf_decoder_select="golomb"
2041 rscc_decoder_deps="zlib"
2042 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2043 rv10_encoder_select="h263_encoder"
2044 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2045 rv20_encoder_select="h263_encoder"
2046 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2047 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2048 screenpresso_decoder_deps="zlib"
2049 shorten_decoder_select="golomb"
2050 sipr_decoder_select="lsp"
2051 sp5x_decoder_select="mjpeg_decoder"
2052 svq1_decoder_select="hpeldsp"
2053 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2054 svq3_decoder_select="golomb h264dsp h264pred hpeldsp tpeldsp videodsp"
2055 svq3_decoder_suggest="zlib"
2056 tak_decoder_select="audiodsp"
2057 tdsc_decoder_deps="zlib"
2058 tdsc_decoder_select="mjpeg_decoder"
2059 theora_decoder_select="vp3_decoder"
2060 thp_decoder_select="mjpeg_decoder"
2061 tiff_decoder_suggest="zlib"
2062 tiff_encoder_suggest="zlib"
2063 truehd_decoder_select="mlp_decoder"
2064 truemotion2_decoder_select="bswapdsp"
2065 truespeech_decoder_select="bswapdsp"
2066 tscc_decoder_deps="zlib"
2067 txd_decoder_select="texturedsp"
2068 twinvq_decoder_select="mdct lsp sinewin"
2069 utvideo_decoder_select="bswapdsp"
2070 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2071 vble_decoder_select="huffyuvdsp"
2072 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2073 vc1image_decoder_select="vc1_decoder"
2074 vorbis_decoder_select="mdct"
2075 vorbis_encoder_select="mdct"
2076 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2077 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2078 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2079 vp6a_decoder_select="vp6_decoder"
2080 vp6f_decoder_select="vp6_decoder"
2081 vp7_decoder_select="h264pred videodsp vp8dsp"
2082 vp8_decoder_select="h264pred videodsp vp8dsp"
2083 vp9_decoder_select="videodsp"
2084 webp_decoder_select="vp8_decoder"
2085 wmapro_decoder_select="mdct sinewin wma_freqs"
2086 wmav1_decoder_select="mdct sinewin wma_freqs"
2087 wmav1_encoder_select="mdct sinewin wma_freqs"
2088 wmav2_decoder_select="mdct sinewin wma_freqs"
2089 wmav2_encoder_select="mdct sinewin wma_freqs"
2090 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2091 wmv1_decoder_select="h263_decoder"
2092 wmv1_encoder_select="h263_encoder"
2093 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2094 wmv2_encoder_select="h263_encoder wmv2dsp"
2095 wmv3_decoder_select="vc1_decoder"
2096 wmv3image_decoder_select="wmv3_decoder"
2097 zerocodec_decoder_deps="zlib"
2098 zlib_decoder_deps="zlib"
2099 zlib_encoder_deps="zlib"
2100 zmbv_decoder_deps="zlib"
2101 zmbv_encoder_deps="zlib"
2102
2103 # hardware accelerators
2104 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2105 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2106 vaapi_deps="va_va_h"
2107 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2108 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2109 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2110
2111 h263_vaapi_hwaccel_deps="vaapi"
2112 h263_vaapi_hwaccel_select="h263_decoder"
2113 h264_d3d11va_hwaccel_deps="d3d11va"
2114 h264_d3d11va_hwaccel_select="h264_decoder"
2115 h264_dxva2_hwaccel_deps="dxva2"
2116 h264_dxva2_hwaccel_select="h264_decoder"
2117 h264_mmal_decoder_deps="mmal"
2118 h264_mmal_decoder_select="mmal"
2119 h264_mmal_hwaccel_deps="mmal"
2120 h264_omx_encoder_deps="omx"
2121 h264_qsv_hwaccel_deps="libmfx"
2122 h264_vaapi_hwaccel_deps="vaapi"
2123 h264_vaapi_hwaccel_select="h264_decoder"
2124 h264_vda_hwaccel_deps="vda"
2125 h264_vda_hwaccel_select="h264_decoder"
2126 h264_vda_old_hwaccel_deps="vda"
2127 h264_vda_old_hwaccel_select="h264_decoder"
2128 h264_vdpau_hwaccel_deps="vdpau"
2129 h264_vdpau_hwaccel_select="h264_decoder"
2130 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2131 hevc_d3d11va_hwaccel_select="hevc_decoder"
2132 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2133 hevc_dxva2_hwaccel_select="hevc_decoder"
2134 hevc_qsv_hwaccel_deps="libmfx"
2135 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2136 hevc_vdpau_hwaccel_select="hevc_decoder"
2137 mpeg1_vdpau_hwaccel_deps="vdpau"
2138 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2139 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2140 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2141 mpeg2_dxva2_hwaccel_deps="dxva2"
2142 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2143 mpeg2_mmal_decoder_deps="mmal"
2144 mpeg2_mmal_decoder_select="mmal"
2145 mpeg2_mmal_hwaccel_deps="mmal"
2146 mpeg2_qsv_hwaccel_deps="libmfx"
2147 mpeg2_vaapi_hwaccel_deps="vaapi"
2148 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2149 mpeg2_vdpau_hwaccel_deps="vdpau"
2150 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2151 mpeg4_omx_encoder_deps="omx"
2152 mpeg4_vaapi_hwaccel_deps="vaapi"
2153 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2154 mpeg4_vdpau_hwaccel_deps="vdpau"
2155 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2156 vc1_d3d11va_hwaccel_deps="d3d11va"
2157 vc1_d3d11va_hwaccel_select="vc1_decoder"
2158 vc1_dxva2_hwaccel_deps="dxva2"
2159 vc1_dxva2_hwaccel_select="vc1_decoder"
2160 vc1_mmal_decoder_deps="mmal"
2161 vc1_mmal_decoder_select="mmal"
2162 vc1_mmal_hwaccel_deps="mmal"
2163 vc1_vaapi_hwaccel_deps="vaapi"
2164 vc1_vaapi_hwaccel_select="vc1_decoder"
2165 vc1_vdpau_hwaccel_deps="vdpau"
2166 vc1_vdpau_hwaccel_select="vc1_decoder"
2167 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2168 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2169 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2170 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2171
2172 # hardware-accelerated codecs
2173 nvenc_deps_any="dlopen LoadLibrary"
2174 nvenc_extralibs='$ldl'
2175 omx_deps="dlopen pthreads"
2176 omx_extralibs='$ldl'
2177 qsvdec_select="qsv"
2178 qsvenc_select="qsv"
2179 vaapi_encode_deps="vaapi"
2180
2181 hwupload_cuda_filter_deps="cuda"
2182 scale_npp_filter_deps="cuda libnpp"
2183
2184 h264_nvenc_encoder_deps="nvenc"
2185 h264_qsv_decoder_deps="libmfx"
2186 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2187 h264_qsv_encoder_deps="libmfx"
2188 h264_qsv_encoder_select="qsvenc"
2189 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2190 h264_vaapi_encoder_select="vaapi_encode golomb"
2191
2192 hevc_nvenc_encoder_deps="nvenc"
2193 hevc_qsv_decoder_deps="libmfx"
2194 hevc_qsv_encoder_deps="libmfx"
2195 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2196 hevc_qsv_encoder_select="qsvenc"
2197 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2198 hevc_vaapi_encoder_select="vaapi_encode golomb"
2199 mpeg2_qsv_decoder_deps="libmfx"
2200 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2201 mpeg2_qsv_encoder_deps="libmfx"
2202 mpeg2_qsv_encoder_select="qsvenc"
2203
2204 nvenc_h264_encoder_deps="nvenc"
2205 nvenc_hevc_encoder_deps="nvenc"
2206
2207 # parsers
2208 h264_parser_select="golomb h264dsp"
2209 hevc_parser_select="golomb"
2210 mpegvideo_parser_select="mpegvideo"
2211 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2212 vc1_parser_select="vc1dsp"
2213
2214 # bitstream_filters
2215 mjpeg2jpeg_bsf_select="jpegtables"
2216
2217 # external libraries
2218 libdcadec_decoder_deps="libdcadec"
2219 libfaac_encoder_deps="libfaac"
2220 libfaac_encoder_select="audio_frame_queue"
2221 libfdk_aac_decoder_deps="libfdk_aac"
2222 libfdk_aac_encoder_deps="libfdk_aac"
2223 libfdk_aac_encoder_select="audio_frame_queue"
2224 libgsm_decoder_deps="libgsm"
2225 libgsm_encoder_deps="libgsm"
2226 libgsm_ms_decoder_deps="libgsm"
2227 libgsm_ms_encoder_deps="libgsm"
2228 libilbc_decoder_deps="libilbc"
2229 libilbc_encoder_deps="libilbc"
2230 libkvazaar_encoder_deps="libkvazaar"
2231 libmp3lame_encoder_deps="libmp3lame"
2232 libmp3lame_encoder_select="audio_frame_queue"
2233 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2234 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2235 libopencore_amrnb_encoder_select="audio_frame_queue"
2236 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2237 libopenh264_encoder_deps="libopenh264"
2238 libopenjpeg_decoder_deps="libopenjpeg"
2239 libopenjpeg_encoder_deps="libopenjpeg"
2240 libopus_decoder_deps="libopus"
2241 libopus_encoder_deps="libopus"
2242 libopus_encoder_select="audio_frame_queue"
2243 libschroedinger_decoder_deps="libschroedinger"
2244 libschroedinger_encoder_deps="libschroedinger"
2245 libspeex_decoder_deps="libspeex"
2246 libspeex_encoder_deps="libspeex"
2247 libspeex_encoder_select="audio_frame_queue"
2248 libtheora_encoder_deps="libtheora"
2249 libtwolame_encoder_deps="libtwolame"
2250 libvo_aacenc_encoder_deps="libvo_aacenc"
2251 libvo_aacenc_encoder_select="audio_frame_queue"
2252 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2253 libvorbis_encoder_deps="libvorbis"
2254 libvorbis_encoder_select="audio_frame_queue"
2255 libvpx_vp8_decoder_deps="libvpx"
2256 libvpx_vp8_encoder_deps="libvpx"
2257 libvpx_vp9_decoder_deps="libvpx"
2258 libvpx_vp9_encoder_deps="libvpx"
2259 libwavpack_encoder_deps="libwavpack"
2260 libwebp_encoder_deps="libwebp"
2261 libx262_encoder_deps="libx262"
2262 libx264_encoder_deps="libx264"
2263 libx265_encoder_deps="libx265"
2264 libxavs_encoder_deps="libxavs"
2265 libxvid_encoder_deps="libxvid"
2266
2267 # demuxers / muxers
2268 ac3_demuxer_select="ac3_parser"
2269 asf_demuxer_select="riffdec"
2270 asf_muxer_select="riffenc"
2271 asf_stream_muxer_select="asf_muxer"
2272 avi_demuxer_select="iso_media riffdec"
2273 avi_muxer_select="riffenc"
2274 avisynth_demuxer_deps="avisynth"
2275 avisynth_demuxer_select="riffdec"
2276 caf_demuxer_select="iso_media riffdec"
2277 dash_muxer_select="mp4_muxer"
2278 dirac_demuxer_select="dirac_parser"
2279 dv_demuxer_select="dvprofile"
2280 dv_muxer_select="dvprofile"
2281 dxa_demuxer_select="riffdec"
2282 eac3_demuxer_select="ac3_parser"
2283 f4v_muxer_select="mov_muxer"
2284 flac_demuxer_select="flac_parser"
2285 hds_muxer_select="flv_muxer"
2286 hls_muxer_select="mpegts_muxer"
2287 ipod_muxer_select="mov_muxer"
2288 ismv_muxer_select="mov_muxer"
2289 matroska_audio_muxer_select="matroska_muxer"
2290 matroska_demuxer_select="iso_media riffdec"
2291 matroska_demuxer_suggest="bzlib lzo zlib"
2292 matroska_muxer_select="iso_media riffenc"
2293 mmf_muxer_select="riffenc"
2294 mov_demuxer_select="iso_media riffdec"
2295 mov_demuxer_suggest="zlib"
2296 mov_muxer_select="iso_media riffenc rtpenc_chain"
2297 mp3_demuxer_select="mpegaudio_parser"
2298 mp4_muxer_select="mov_muxer"
2299 mpegts_demuxer_select="iso_media"
2300 mpegts_muxer_select="adts_muxer latm_muxer"
2301 mpegtsraw_demuxer_select="mpegts_demuxer"
2302 mxf_d10_muxer_select="mxf_muxer"
2303 nut_muxer_select="riffenc"
2304 nuv_demuxer_select="riffdec"
2305 oga_muxer_select="ogg_muxer"
2306 ogg_demuxer_select="dirac_parse"
2307 opus_muxer_select="ogg_muxer"
2308 psp_muxer_select="mov_muxer"
2309 rtp_demuxer_select="sdp_demuxer"
2310 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2311 rtsp_demuxer_select="http_protocol rtpdec"
2312 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2313 sap_demuxer_select="sdp_demuxer"
2314 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2315 sdp_demuxer_select="rtpdec"
2316 smoothstreaming_muxer_select="ismv_muxer"
2317 spdif_muxer_select="aac_parser"
2318 spx_muxer_select="ogg_muxer"
2319 swf_demuxer_suggest="zlib"
2320 tak_demuxer_select="tak_parser"
2321 tg2_muxer_select="mov_muxer"
2322 tgp_muxer_select="mov_muxer"
2323 w64_demuxer_select="wav_demuxer"
2324 wav_demuxer_select="riffdec"
2325 wav_muxer_select="riffenc"
2326 webm_muxer_select="iso_media riffenc"
2327 webm_muxer_suggest="libopus_encoder libvorbis_encoder libvpx_vp8_encoder libvpx_vp9_encoder"
2328 wtv_demuxer_select="mpegts_demuxer riffdec"
2329 xmv_demuxer_select="riffdec"
2330 xwma_demuxer_select="riffdec"
2331
2332 # indevs / outdevs
2333 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2334 alsa_outdev_deps="alsa_asoundlib_h"
2335 avfoundation_indev_deps="AVFoundation_AVFoundation_h"
2336 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2337 dv1394_indev_deps="dv1394"
2338 dv1394_indev_select="dv_demuxer"
2339 fbdev_indev_deps="linux_fb_h"
2340 jack_indev_deps="jack_jack_h"
2341 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2342 libcdio_indev_deps="libcdio"
2343 libdc1394_indev_deps="libdc1394"
2344 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2345 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2346 pulse_indev_deps="libpulse"
2347 sndio_indev_deps="sndio_h"
2348 sndio_outdev_deps="sndio_h"
2349 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2350 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2351 vfwcap_indev_extralibs="-lavicap32"
2352 x11grab_indev_deps="x11grab"
2353 x11grab_xcb_indev_deps="libxcb"
2354
2355 # protocols
2356 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2357 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2358 ffrtmpcrypt_protocol_select="tcp_protocol"
2359 ffrtmphttp_protocol_deps="!librtmp_protocol"
2360 ffrtmphttp_protocol_select="http_protocol"
2361 gopher_protocol_select="network"
2362 http_protocol_select="tcp_protocol"
2363 httpproxy_protocol_select="tcp_protocol"
2364 https_protocol_select="tls_protocol"
2365 icecast_protocol_select="http_protocol"
2366 librtmp_protocol_deps="librtmp"
2367 librtmpe_protocol_deps="librtmp"
2368 librtmps_protocol_deps="librtmp"
2369 librtmpt_protocol_deps="librtmp"
2370 librtmpte_protocol_deps="librtmp"
2371 mmsh_protocol_select="http_protocol"
2372 mmst_protocol_select="network"
2373 rtmp_protocol_deps="!librtmp_protocol"
2374 rtmp_protocol_select="tcp_protocol"
2375 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2376 rtmps_protocol_deps="!librtmp_protocol"
2377 rtmps_protocol_select="tls_protocol"
2378 rtmpt_protocol_select="ffrtmphttp_protocol"
2379 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2380 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2381 rtp_protocol_select="udp_protocol"
2382 sctp_protocol_deps="struct_sctp_event_subscribe"
2383 sctp_protocol_select="network"
2384 srtp_protocol_select="rtp_protocol srtp"
2385 tcp_protocol_select="network"
2386 tls_gnutls_protocol_deps="gnutls"
2387 tls_gnutls_protocol_select="tcp_protocol"
2388 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2389 tls_openssl_protocol_select="tcp_protocol"
2390 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2391 udp_protocol_select="network"
2392 unix_protocol_deps="sys_un_h"
2393 unix_protocol_select="network"
2394
2395 # filters
2396 blackframe_filter_deps="gpl"
2397 boxblur_filter_deps="gpl"
2398 bs2b_filter_deps="libbs2b"
2399 cropdetect_filter_deps="gpl"
2400 delogo_filter_deps="gpl"
2401 drawtext_filter_deps="libfreetype"
2402 frei0r_filter_deps="frei0r dlopen"
2403 frei0r_filter_extralibs='$ldl'
2404 frei0r_src_filter_deps="frei0r dlopen"
2405 frei0r_src_filter_extralibs='$ldl'
2406 hqdn3d_filter_deps="gpl"
2407 interlace_filter_deps="gpl"
2408 ocv_filter_deps="libopencv"
2409 resample_filter_deps="avresample"
2410 scale_filter_deps="swscale"
2411 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2412
2413 # examples
2414 avcodec_example_deps="avcodec avutil"
2415 filter_audio_example_deps="avfilter avutil"
2416 metadata_example_deps="avformat avutil"
2417 output_example_deps="avcodec avformat avutil swscale"
2418 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2419 transcode_aac_example_deps="avcodec avformat avresample"
2420
2421 # libraries, in linking order
2422 avcodec_deps="avutil"
2423 avdevice_deps="avformat avcodec avutil"
2424 avfilter_deps="avutil"
2425 avformat_deps="avcodec avutil"
2426 avresample_deps="avutil"
2427 swscale_deps="avutil"
2428
2429 # programs
2430 avconv_deps="avcodec avfilter avformat avresample swscale"
2431 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2432                fps_filter null_filter resample_filter scale_filter
2433                setpts_filter trim_filter"
2434 avplay_deps="avcodec avfilter avformat avresample sdl"
2435 avplay_libs='$sdl_libs'
2436 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2437 avprobe_deps="avcodec avformat"
2438
2439 # documentation
2440 pod2man_deps="doc"
2441 texi2html_deps="doc"
2442
2443 # default parameters
2444
2445 logfile="config.log"
2446
2447 # installation paths
2448 prefix_default="/usr/local"
2449 bindir_default='${prefix}/bin'
2450 datadir_default='${prefix}/share/avconv'
2451 docdir_default='${prefix}/share/doc/libav'
2452 incdir_default='${prefix}/include'
2453 libdir_default='${prefix}/lib'
2454 mandir_default='${prefix}/share/man'
2455 shlibdir_default="$libdir_default"
2456
2457 # toolchain
2458 ar_default="ar"
2459 cc_default="gcc"
2460 host_cc_default="gcc"
2461 cp_f="cp -f"
2462 ln_s="ln -s -f"
2463 nm_default="nm -g"
2464 objformat="elf"
2465 pkg_config_default=pkg-config
2466 ranlib="ranlib"
2467 strip="strip"
2468 version_script='--version-script'
2469 yasmexe="yasm"
2470
2471 # machine
2472 arch_default=$(uname -m)
2473 cpu="generic"
2474 intrinsics="none"
2475
2476 # OS
2477 target_os_default=$(tolower $(uname -s))
2478 host_os=$target_os_default
2479
2480 # configurable options
2481 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2482
2483 enable asm
2484 enable debug
2485 enable doc
2486 enable faan faandct faanidct
2487 enable optimizations
2488 enable safe_bitstream_reader
2489 enable static
2490 enable swscale_alpha
2491 enable valgrind_backtrace
2492
2493 # By default, enable only those hwaccels that have no external dependencies.
2494 enable d3d11va dxva2 vda vdpau
2495
2496 # build settings
2497 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2498 LIBPREF="lib"
2499 LIBSUF=".a"
2500 FULLNAME='$(NAME)$(BUILDSUF)'
2501 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2502 SLIBPREF="lib"
2503 SLIBSUF=".so"
2504 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2505 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2506 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2507 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2508 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2509 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2510 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2511
2512 asflags_filter=echo
2513 cflags_filter=echo
2514 ldflags_filter=echo
2515
2516 AS_C='-c'
2517 AS_O='-o $@'
2518 CC_C='-c'
2519 CC_E='-E -o $@'
2520 CC_O='-o $@'
2521 OBJCC_C='-c'
2522 OBJCC_E='-E -o $@'
2523 OBJCC_O='-o $@'
2524 LD_O='-o $@'
2525 LD_LIB='-l%'
2526 LD_PATH='-L'
2527 HOSTCC_C='-c'
2528 HOSTCC_E='-E -o $@'
2529 HOSTCC_O='-o $@'
2530 HOSTLD_O='-o $@'
2531
2532 host_libs='-lm'
2533 host_cflags_filter=echo
2534 host_ldflags_filter=echo
2535
2536 target_path='$(CURDIR)'
2537
2538 # since the object filename is not given with the -MM flag, the compiler
2539 # is only able to print the basename, and we must add the path ourselves
2540 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2541 DEPFLAGS='-MM'
2542
2543 # find source path
2544 if test -f configure; then
2545     source_path=.
2546 else
2547     source_path=$(cd $(dirname "$0"); pwd)
2548     echo "$source_path" | grep -q '[[:blank:]]' &&
2549         die "Out of tree builds are impossible with whitespace in source path."
2550     test -e "$source_path/config.h" &&
2551         die "Out of tree builds are impossible with config.h in source dir."
2552 fi
2553
2554 for v in "$@"; do
2555     r=${v#*=}
2556     l=${v%"$r"}
2557     r=$(sh_quote "$r")
2558     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2559 done
2560
2561 find_things(){
2562     thing=$1
2563     pattern=$2
2564     file=$source_path/$3
2565     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2566 }
2567
2568 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2569 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2570 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2571 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2572 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2573 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2574 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2575 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2576 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2577
2578 find_things_extern(){
2579     thing=$1
2580     pattern=$2
2581     file=$source_path/$3
2582     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2583 }
2584
2585 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2586 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2587
2588 ALL_COMPONENTS="
2589     $BSF_LIST
2590     $DECODER_LIST
2591     $DEMUXER_LIST
2592     $ENCODER_LIST
2593     $FILTER_LIST
2594     $HWACCEL_LIST
2595     $INDEV_LIST
2596     $MUXER_LIST
2597     $OUTDEV_LIST
2598     $PARSER_LIST
2599     $PROTOCOL_LIST
2600 "
2601
2602 for n in $COMPONENT_LIST; do
2603     v=$(toupper ${n%s})_LIST
2604     eval enable \$$v
2605     eval ${n}_if_any="\$$v"
2606 done
2607
2608 enable $ARCH_EXT_LIST
2609
2610 die_unknown(){
2611     echo "Unknown option \"$1\"."
2612     echo "See $0 --help for available options."
2613     exit 1
2614 }
2615
2616 print_3_columns() {
2617     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2618 }
2619
2620 show_list() {
2621     suffix=_$1
2622     shift
2623     echo $* | sed s/$suffix//g | print_3_columns
2624     exit 0
2625 }
2626
2627 rand_list(){
2628     IFS=', '
2629     set -- $*
2630     unset IFS
2631     for thing; do
2632         comp=${thing%:*}
2633         prob=${thing#$comp}
2634         prob=${prob#:}
2635         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2636         echo "prob ${prob:-0.5}"
2637         printf '%s\n' $comp
2638     done
2639 }
2640
2641 do_random(){
2642     action=$1
2643     shift
2644     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2645     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2646 }
2647
2648 for opt do
2649     optval="${opt#*=}"
2650     case "$opt" in
2651         --extra-ldflags=*)
2652             add_ldflags $optval
2653         ;;
2654         --extra-ldexeflags=*)
2655             add_ldexeflags $optval
2656         ;;
2657         --extra-libs=*)
2658             add_extralibs $optval
2659         ;;
2660         --disable-devices)
2661             disable $INDEV_LIST $OUTDEV_LIST
2662         ;;
2663         --enable-debug=*)
2664             debuglevel="$optval"
2665         ;;
2666         --disable-programs)
2667             disable $PROGRAM_LIST
2668         ;;
2669         --disable-everything)
2670             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2671         ;;
2672         --disable-all)
2673             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2674             disable $LIBRARY_LIST $PROGRAM_LIST doc
2675         ;;
2676         --enable-random|--disable-random)
2677             action=${opt%%-random}
2678             do_random ${action#--} $COMPONENT_LIST
2679         ;;
2680         --enable-random=*|--disable-random=*)
2681             action=${opt%%-random=*}
2682             do_random ${action#--} $optval
2683         ;;
2684         --enable-*=*|--disable-*=*)
2685             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2686             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2687             eval list=\$$(toupper $thing)_LIST
2688             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2689             $action $(filter "$name" $list)
2690         ;;
2691         --enable-avserver|--disable-avserver*)
2692             warn "avserver has been removed, the ${opt} option is only"\
2693                  "provided for compatibility and will be removed in the future"
2694         ;;
2695         --enable-?*|--disable-?*)
2696             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2697             if is_in $option $COMPONENT_LIST; then
2698                 test $action = disable && action=unset
2699                 eval $action \$$(toupper ${option%s})_LIST
2700             elif is_in $option $CMDLINE_SELECT; then
2701                 $action $option
2702             else
2703                 die_unknown $opt
2704             fi
2705         ;;
2706         --list-*)
2707             NAME="${opt#--list-}"
2708             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2709             NAME=${NAME%s}
2710             eval show_list $NAME \$$(toupper $NAME)_LIST
2711         ;;
2712         --help|-h) show_help
2713         ;;
2714         *)
2715             optname="${opt%%=*}"
2716             optname="${optname#--}"
2717             optname=$(echo "$optname" | sed 's/-/_/g')
2718             if is_in $optname $CMDLINE_SET; then
2719                 eval $optname='$optval'
2720             elif is_in $optname $CMDLINE_APPEND; then
2721                 append $optname "$optval"
2722             else
2723                 die_unknown $opt
2724             fi
2725         ;;
2726     esac
2727 done
2728
2729 for e in $env; do
2730     eval "export $e"
2731 done
2732
2733 disabled logging && logfile=/dev/null
2734
2735 # Disable all the library-specific components if the library itself
2736 # is disabled, see AVCODEC_LIST and following _LIST variables.
2737
2738 disable_components(){
2739     disabled ${1} && disable $(
2740         eval components="\$$(toupper ${1})_COMPONENTS"
2741         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2742     )
2743 }
2744
2745 map 'disable_components $v' $LIBRARY_LIST
2746
2747 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2748 set >> $logfile
2749
2750 case "$toolchain" in
2751     *-asan)
2752         cc_default="${toolchain%-asan}"
2753         add_cflags  -fsanitize=address
2754         add_ldflags -fsanitize=address
2755     ;;
2756     *-msan)
2757         cc_default="${toolchain%-msan}"
2758         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2759         add_ldflags -fsanitize=memory
2760     ;;
2761     *-tsan)
2762         cc_default="${toolchain%-tsan}"
2763         add_cflags  -fsanitize=thread -pie
2764         add_ldflags -fsanitize=thread -pie
2765         case "$toolchain" in
2766             gcc-tsan)
2767                 add_cflags  -fPIC
2768                 add_ldflags -fPIC
2769                 ;;
2770         esac
2771     ;;
2772     *-usan)
2773         cc_default="${toolchain%-usan}"
2774         add_cflags  -fsanitize=undefined
2775         add_ldflags -fsanitize=undefined
2776         case "$toolchain" in
2777             clang-usan)
2778                 add_cflags -O1
2779                 ;;
2780         esac
2781     ;;
2782     valgrind-*)
2783         target_exec_default="valgrind"
2784         case "$toolchain" in
2785             valgrind-massif)
2786                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2787                 ;;
2788             valgrind-memcheck)
2789                 target_exec_args="--track-origins=yes --leak-check=full"
2790                 ;;
2791         esac
2792     ;;
2793     msvc)
2794         # Check whether the current MSVC version needs the C99 converter.
2795         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2796         # support enough of C99 to build libav. Default to the new
2797         # behaviour if the regexp was unable to match anything, since this
2798         # successfully parses the version number of existing supported
2799         # versions that require the converter (MSVC 2010 and 2012).
2800         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2801         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2802             cc_default="cl"
2803         else
2804             cc_default="c99wrap cl"
2805         fi
2806         ld_default="$source_path/compat/windows/mslink"
2807         nm_default="dumpbin -symbols"
2808         ar_default="lib"
2809         case "$arch" in
2810         arm*)
2811             as_default="armasm"
2812             ;;
2813         esac
2814         target_os_default="win32"
2815         # Use a relative path for TMPDIR. This makes sure all the
2816         # ffconf temp files are written with a relative path, avoiding
2817         # issues with msys/win32 path conversion for MSVC parameters
2818         # such as -Fo<file> or -out:<file>.
2819         TMPDIR=.
2820     ;;
2821     icl)
2822         cc_default="icl"
2823         ld_default="xilink"
2824         nm_default="dumpbin -symbols"
2825         ar_default="xilib"
2826         target_os_default="win32"
2827         TMPDIR=.
2828     ;;
2829     gcov)
2830         add_cflags  -fprofile-arcs -ftest-coverage
2831         add_ldflags -fprofile-arcs -ftest-coverage
2832     ;;
2833     llvm-cov)
2834         add_cflags -fprofile-arcs -ftest-coverage
2835         add_ldflags --coverage
2836     ;;
2837     hardened)
2838         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2839         add_cflags   -fno-strict-overflow -fstack-protector-all
2840         add_ldflags  -Wl,-z,relro -Wl,-z,now
2841     ;;
2842     ?*)
2843         die "Unknown toolchain $toolchain"
2844     ;;
2845 esac
2846
2847 test -n "$cross_prefix" && enable cross_compile
2848
2849 if enabled cross_compile; then
2850     test -n "$arch" && test -n "$target_os" ||
2851         die "Must specify target arch and OS when cross-compiling"
2852 fi
2853
2854 ar_default="${cross_prefix}${ar_default}"
2855 cc_default="${cross_prefix}${cc_default}"
2856 occ_default="${cross_prefix}${occ_default}"
2857 nm_default="${cross_prefix}${nm_default}"
2858 pkg_config_default="${cross_prefix}${pkg_config_default}"
2859 ranlib="${cross_prefix}${ranlib}"
2860 strip="${cross_prefix}${strip}"
2861
2862 sysinclude_default="${sysroot}/usr/include"
2863
2864 set_default arch cc pkg_config sysinclude target_exec target_os
2865 enabled cross_compile || host_cc_default=$cc
2866 set_default host_cc
2867
2868 if ! $pkg_config --version >/dev/null 2>&1; then
2869     warn "$pkg_config not found, library detection may fail."
2870     pkg_config=false
2871 fi
2872
2873 exesuf() {
2874     case $1 in
2875         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2876     esac
2877 }
2878
2879 EXESUF=$(exesuf $target_os)
2880 HOSTEXESUF=$(exesuf $host_os)
2881
2882 # set temporary file name
2883 : ${TMPDIR:=$TEMPDIR}
2884 : ${TMPDIR:=$TMP}
2885 : ${TMPDIR:=/tmp}
2886
2887 if ! check_cmd mktemp -u XXXXXX; then
2888     # simple replacement for missing mktemp
2889     # NOT SAFE FOR GENERAL USE
2890     mktemp(){
2891         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2892     }
2893 fi
2894
2895 tmpfile(){
2896     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2897         (set -C; exec > $tmp) 2>/dev/null ||
2898         die "Unable to create temporary file in $TMPDIR."
2899     append TMPFILES $tmp
2900     eval $1=$tmp
2901 }
2902
2903 trap 'rm -f -- $TMPFILES' EXIT
2904
2905 tmpfile TMPASM .asm
2906 tmpfile TMPC   .c
2907 tmpfile TMPE   $EXESUF
2908 tmpfile TMPH   .h
2909 tmpfile TMPO   .o
2910 tmpfile TMPS   .S
2911 tmpfile TMPSH  .sh
2912 tmpfile TMPV   .ver
2913
2914 unset -f mktemp
2915
2916 chmod +x $TMPE
2917
2918 # make sure we can execute files in $TMPDIR
2919 cat > $TMPSH 2>> $logfile <<EOF
2920 #! /bin/sh
2921 EOF
2922 chmod +x $TMPSH >> $logfile 2>&1
2923 if ! $TMPSH >> $logfile 2>&1; then
2924     cat <<EOF
2925 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2926 variable to another directory and make sure that it is not mounted noexec.
2927 EOF
2928     die "Sanity test failed."
2929 fi
2930
2931 armasm_flags(){
2932     for flag; do
2933         case $flag in
2934             # Filter out MSVC cl.exe options from cflags that shouldn't
2935             # be passed to gas-preprocessor
2936             -M[TD]*)                                            ;;
2937             *)                  echo $flag                      ;;
2938         esac
2939    done
2940 }
2941
2942 ccc_flags(){
2943     for flag; do
2944         case $flag in
2945             -std=c99)           echo -c99                       ;;
2946             -mcpu=*)            echo -arch ${flag#*=}           ;;
2947             -mieee)             echo -ieee                      ;;
2948             -O*|-fast)          echo $flag                      ;;
2949             -fno-math-errno)    echo -assume nomath_errno       ;;
2950             -g)                 echo -g3                        ;;
2951             -Wall)              echo -msg_enable level2         ;;
2952             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2953             -Wl,*)              echo $flag                      ;;
2954             -f*|-W*)                                            ;;
2955             *)                  echo $flag                      ;;
2956         esac
2957    done
2958 }
2959
2960 cparser_flags(){
2961     for flag; do
2962         case $flag in
2963             -Wno-switch)             echo -Wno-switch-enum ;;
2964             -Wno-format-zero-length) ;;
2965             -Wdisabled-optimization) ;;
2966             -Wno-pointer-sign)       echo -Wno-other ;;
2967             *)                       echo $flag ;;
2968         esac
2969     done
2970 }
2971
2972 msvc_common_flags(){
2973     for flag; do
2974         case $flag in
2975             # In addition to specifying certain flags under the compiler
2976             # specific filters, they must be specified here as well or else the
2977             # generic catch all at the bottom will print the original flag.
2978             -Wall)                ;;
2979             -std=c99)             ;;
2980             # Common flags
2981             -fomit-frame-pointer) ;;
2982             -g)                   echo -Z7 ;;
2983             -fno-math-errno)      ;;
2984             -fno-common)          ;;
2985             -fno-signed-zeros)    ;;
2986             -fPIC)                ;;
2987             -mthumb)              ;;
2988             -march=*)             ;;
2989             -lz)                  echo zlib.lib ;;
2990             -lavifil32)           echo vfw32.lib ;;
2991             -lavicap32)           echo vfw32.lib user32.lib ;;
2992             -lx264)               echo libx264.lib ;;
2993             -l*)                  echo ${flag#-l}.lib ;;
2994             -L*)                  echo -libpath:${flag#-L} ;;
2995             *)                    echo $flag ;;
2996         esac
2997     done
2998 }
2999
3000 msvc_flags(){
3001     msvc_common_flags "$@"
3002     for flag; do
3003         case $flag in
3004             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3005                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3006                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3007                                        -wd4273 -wd4554 -wd4701 ;;
3008         esac
3009     done
3010 }
3011
3012 icl_flags(){
3013     msvc_common_flags "$@"
3014     for flag; do
3015         case $flag in
3016             # Despite what Intel's documentation says -Wall, which is supported
3017             # on Windows, does enable remarks so disable them here.
3018             -Wall)                echo $flag -Qdiag-disable:remark ;;
3019             -std=c99)             echo -Qstd=c99 ;;
3020         esac
3021     done
3022 }
3023
3024 pgi_flags(){
3025     for flag; do
3026         case $flag in
3027             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3028             -fomit-frame-pointer) echo -Mnoframe ;;
3029             -g)                   echo -gopt ;;
3030             *)                    echo $flag ;;
3031         esac
3032     done
3033 }
3034
3035 suncc_flags(){
3036     for flag; do
3037         case $flag in
3038             -march=*|-mcpu=*)
3039                 case "${flag#*=}" in
3040                     native)                   echo -xtarget=native       ;;
3041                     v9|niagara)               echo -xarch=sparc          ;;
3042                     ultrasparc)               echo -xarch=sparcvis       ;;
3043                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3044                     i586|pentium)             echo -xchip=pentium        ;;
3045                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3046                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3047                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3048                     pentium4*)          echo -xtarget=pentium4           ;;
3049                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3050                     *-sse3)             echo -xarch=sse3                 ;;
3051                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3052                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3053                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3054                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3055                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3056                     k8|opteron|athlon64|athlon-fx)
3057                                                echo -xarch=sse2a         ;;
3058                     athlon*)                   echo -xarch=pentium_proa  ;;
3059                 esac
3060                 ;;
3061             -std=c99)             echo -xc99              ;;
3062             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3063             -fPIC)                echo -KPIC -xcode=pic32 ;;
3064             -W*,*)                echo $flag              ;;
3065             -f*-*|-W*|-mimpure-text)                      ;;
3066             -shared)              echo -G                 ;;
3067             *)                    echo $flag              ;;
3068         esac
3069     done
3070 }
3071
3072 tms470_flags(){
3073     for flag; do
3074         case $flag in
3075             -march=*|-mcpu=*)
3076                 case "${flag#*=}" in
3077                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3078                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3079                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3080                     armv6*|arm11*)          echo -mv=6   ;;
3081                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3082                                             echo -mv=5e  ;;
3083                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3084                 esac
3085                 ;;
3086             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3087             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3088             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3089             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3090             -msoft-float)   echo --float_support=vfplib       ;;
3091             -O[0-3]|-mf=*)  echo $flag                        ;;
3092             -g)             echo -g -mn                       ;;
3093             -pds=*)         echo $flag                        ;;
3094             -D*|-I*)        echo $flag                        ;;
3095             --gcc|--abi=*)  echo $flag                        ;;
3096             -me)            echo $flag                        ;;
3097         esac
3098     done
3099 }
3100
3101 probe_cc(){
3102     pfx=$1
3103     _cc=$2
3104
3105     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3106     unset _ld_o _ldflags _ld_lib _ld_path
3107     unset _depflags _DEPCMD _DEPFLAGS
3108     _flags_filter=echo
3109
3110     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3111         _type=llvm_gcc
3112         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3113         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3114         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3115         _cflags_speed='-O3'
3116         _cflags_size='-Os'
3117     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3118         _type=gcc
3119         gcc_version=$($_cc --version | head -n1)
3120         gcc_basever=$($_cc -dumpversion)
3121         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3122         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3123         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3124         if ! $_cc -dumpversion | grep -q '^2\.'; then
3125             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3126         fi
3127         _cflags_speed='-O3'
3128         _cflags_size='-Os'
3129     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3130         _type=icc
3131         _ident=$($_cc --version | head -n1)
3132         _depflags='-MMD'
3133         _cflags_speed='-O3'
3134         _cflags_size='-Os'
3135         _cflags_noopt='-O1'
3136     elif $_cc -v 2>&1 | grep -q xlc; then
3137         _type=xlc
3138         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3139         _cflags_speed='-O5'
3140         _cflags_size='-O5 -qcompact'
3141     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3142         _type=ccc
3143         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3144         _DEPFLAGS='-M'
3145         _cflags_speed='-fast'
3146         _cflags_size='-O1'
3147         _flags_filter=ccc_flags
3148     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3149         test -d "$sysroot" || die "No valid sysroot specified."
3150         _type=armcc
3151         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3152         armcc_conf="$PWD/armcc.conf"
3153         $_cc --arm_linux_configure                 \
3154              --arm_linux_config_file="$armcc_conf" \
3155              --configure_sysroot="$sysroot"        \
3156              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3157              die "Error creating armcc configuration file."
3158         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3159         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3160         as_default="${cross_prefix}gcc"
3161         _depflags='-MMD'
3162         _cflags_speed='-O3'
3163         _cflags_size='-Os'
3164     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3165         _type=tms470
3166         _ident=$($_cc -version | head -n1 | tr -s ' ')
3167         _flags='--gcc --abi=eabi -me'
3168         _cc_e='-ppl -fe=$@'
3169         _cc_o='-fe=$@'
3170         _depflags='-ppa -ppd=$(@:.o=.d)'
3171         _cflags_speed='-O3 -mf=5'
3172         _cflags_size='-O3 -mf=2'
3173         _flags_filter=tms470_flags
3174     elif $_cc -v 2>&1 | grep -q clang; then
3175         _type=clang
3176         _ident=$($_cc --version 2>/dev/null | head -n1)
3177         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3178         _cflags_speed='-O3'
3179         _cflags_size='-Os'
3180     elif $_cc -V 2>&1 | grep -q Sun; then
3181         _type=suncc
3182         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3183         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3184         _DEPFLAGS='-xM1 -xc99'
3185         _ldflags='-std=c99'
3186         _cflags_speed='-O5'
3187         _cflags_size='-O5 -xspace'
3188         _flags_filter=suncc_flags
3189     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3190         _type=pathscale
3191         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3192         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3193         _cflags_speed='-O2'
3194         _cflags_size='-Os'
3195         _flags_filter='filter_out -Wdisabled-optimization'
3196     elif $_cc -v 2>&1 | grep -q Open64; then
3197         _type=open64
3198         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3199         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3200         _cflags_speed='-O2'
3201         _cflags_size='-Os'
3202         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3203     elif $_cc -V 2>&1 | grep -q Portland; then
3204         _type=pgi
3205         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3206         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3207         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3208         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3209         _cflags_noopt="-O1"
3210         _flags_filter=pgi_flags
3211     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3212         _type=armasm
3213         _ident=$($_cc | head -n1)
3214         # 4509: "This form of conditional instruction is deprecated"
3215         _flags="-nologo -ignore 4509"
3216         _flags_filter=armasm_flags
3217     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3218         _type=msvc
3219         _ident=$($_cc 2>&1 | head -n1)
3220         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3221         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3222         _cflags_speed="-O2"
3223         _cflags_size="-O1"
3224         if $_cc -nologo- 2>&1 | grep -q Linker; then
3225             _ld_o='-out:$@'
3226         else
3227             _ld_o='-Fe$@'
3228         fi
3229         _cc_o='-Fo$@'
3230         _cc_e='-P -Fi$@'
3231         _flags_filter=msvc_flags
3232         _ld_lib='lib%.a'
3233         _ld_path='-libpath:'
3234         _flags='-nologo'
3235         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS'
3236     elif $_cc 2>&1 | grep -q Intel; then
3237         _type=icl
3238         _ident=$($_cc 2>&1 | head -n1)
3239         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3240         # Not only is O3 broken on 13.x+ but it is slower on all previous
3241         # versions (tested) as well.
3242         _cflags_speed="-O2"
3243         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3244         if $_cc 2>&1 | grep -q Linker; then
3245             _ld_o='-out:$@'
3246         else
3247             _ld_o='-Fe$@'
3248         fi
3249         _cc_o='-Fo$@'
3250         _cc_e='-P'
3251         _flags_filter=icl_flags
3252         _ld_lib='lib%.a'
3253         _ld_path='-libpath:'
3254         # -Qdiag-error to make icl error when seeing certain unknown arguments
3255         _flags='-nologo -Qdiag-error:4044,10157'
3256         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3257         # with MSVC which enables it by default.
3258         _cflags='-D_USE_MATH_DEFINES -Qms0 -Qvec- -Qsimd- -GS'
3259     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3260         _type=cparser
3261         _ident=$($_cc --version | head -n1)
3262         _depflags='-MMD'
3263         _cflags_speed='-O4'
3264         _cflags_size='-O2'
3265         _flags_filter=cparser_flags
3266     fi
3267
3268     eval ${pfx}_type=\$_type
3269     eval ${pfx}_ident=\$_ident
3270 }
3271
3272 set_ccvars(){
3273     eval ${1}_C=\${_cc_c-\${${1}_C}}
3274     eval ${1}_E=\${_cc_e-\${${1}_E}}
3275     eval ${1}_O=\${_cc_o-\${${1}_O}}
3276
3277     if [ -n "$_depflags" ]; then
3278         eval ${1}_DEPFLAGS=\$_depflags
3279     else
3280         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3281         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3282         eval DEP${1}FLAGS=\$_flags
3283     fi
3284 }
3285
3286 probe_cc cc "$cc"
3287 cflags_filter=$_flags_filter
3288 cflags_speed=$_cflags_speed
3289 cflags_size=$_cflags_size
3290 cflags_noopt=$_cflags_noopt
3291 add_cflags $_flags $_cflags
3292 cc_ldflags=$_ldflags
3293 set_ccvars CC
3294
3295 probe_cc hostcc "$host_cc"
3296 host_cflags_filter=$_flags_filter
3297 add_host_cflags  $_flags $_cflags
3298 set_ccvars HOSTCC
3299
3300 test -n "$cc_type" && enable $cc_type ||
3301     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3302
3303 : ${as_default:=$cc}
3304 : ${objcc_default:=$cc}
3305 : ${dep_cc_default:=$cc}
3306 : ${ld_default:=$cc}
3307 : ${host_ld_default:=$host_cc}
3308 set_default ar as objcc dep_cc ld host_ld
3309
3310 probe_cc as "$as"
3311 asflags_filter=$_flags_filter
3312 add_asflags $_flags $_cflags
3313 set_ccvars AS
3314
3315 probe_cc objcc "$objcc"
3316 objcflags_filter=$_flags_filter
3317 add_objcflags $_flags $_cflags
3318 set_ccvars OBJC
3319
3320 probe_cc ld "$ld"
3321 ldflags_filter=$_flags_filter
3322 add_ldflags $_flags $_ldflags
3323 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3324 LD_O=${_ld_o-$LD_O}
3325 LD_LIB=${_ld_lib-$LD_LIB}
3326 LD_PATH=${_ld_path-$LD_PATH}
3327
3328 probe_cc hostld "$host_ld"
3329 host_ldflags_filter=$_flags_filter
3330 add_host_ldflags $_flags $_ldflags
3331 HOSTLD_O=${_ld_o-$HOSTLD_O}
3332
3333 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3334     probe_cc depcc "$dep_cc"
3335     CCDEP=${_DEPCMD:-$DEPCMD}
3336     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3337     DEPCCFLAGS=$_flags
3338 fi
3339
3340 if $ar 2>&1 | grep -q Microsoft; then
3341     arflags="-nologo"
3342     ar_o='-out:$@'
3343 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3344     arflags="rq"
3345     ar_o='$@'
3346 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3347     arflags='-Xany -r -c'
3348     ar_o='$@'
3349 else
3350     arflags="rc"
3351     ar_o='$@'
3352 fi
3353
3354 add_cflags $extra_cflags
3355 add_objcflags $extra_objcflags
3356 add_asflags $extra_cflags
3357
3358 if test -n "$sysroot"; then
3359     case "$cc_type" in
3360         gcc|llvm_gcc|clang)
3361             add_cppflags --sysroot="$sysroot"
3362             add_ldflags --sysroot="$sysroot"
3363         ;;
3364         tms470)
3365             add_cppflags -I"$sysinclude"
3366             add_ldflags  --sysroot="$sysroot"
3367         ;;
3368     esac
3369 fi
3370
3371 if test "$cpu" = host; then
3372     enabled cross_compile &&
3373         die "--cpu=host makes no sense when cross-compiling."
3374
3375     case "$cc_type" in
3376         gcc|llvm_gcc)
3377             check_native(){
3378                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3379                 sed -n "/cc1.*$1=/{
3380                             s/.*$1=\\([^ ]*\\).*/\\1/
3381                             p
3382                             q
3383                         }" $TMPE
3384             }
3385             cpu=$(check_native -march || check_native -mcpu)
3386         ;;
3387     esac
3388
3389     test "${cpu:-host}" = host &&
3390         die "--cpu=host not supported with compiler $cc"
3391 fi
3392
3393 # Deal with common $arch aliases
3394 case "$arch" in
3395     aarch64|arm64)
3396         arch="aarch64"
3397     ;;
3398     arm*)
3399         arch="arm"
3400     ;;
3401     mips*|IP*)
3402         case "$arch" in
3403         *el)
3404             add_cppflags -EL
3405             add_ldflags -EL
3406         ;;
3407         *eb)
3408             add_cppflags -EB
3409             add_ldflags -EB
3410         ;;
3411         esac
3412         arch="mips"
3413     ;;
3414     parisc*|hppa*)
3415         arch="parisc"
3416     ;;
3417     "Power Macintosh"|ppc*|powerpc*)
3418         arch="ppc"
3419     ;;
3420     s390|s390x)
3421         arch="s390"
3422     ;;
3423     sh4|sh)
3424         arch="sh4"
3425     ;;
3426     sun4u|sparc*)
3427         arch="sparc"
3428     ;;
3429     tilegx|tile-gx)
3430         arch="tilegx"
3431     ;;
3432     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3433         arch="x86"
3434     ;;
3435 esac
3436
3437 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3438 enable $arch
3439
3440 # Add processor-specific flags
3441 if enabled aarch64; then
3442
3443     case $cpu in
3444         armv*)
3445             cpuflags="-march=$cpu"
3446         ;;
3447         *)
3448             cpuflags="-mcpu=$cpu"
3449         ;;
3450     esac
3451
3452 elif enabled alpha; then
3453
3454     cpuflags="-mcpu=$cpu"
3455
3456 elif enabled arm; then
3457
3458     check_arm_arch() {
3459         check_cpp_condition stddef.h \
3460             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3461             $cpuflags
3462     }
3463
3464     probe_arm_arch() {
3465         if   check_arm_arch 4;        then echo armv4
3466         elif check_arm_arch 4T;       then echo armv4t
3467         elif check_arm_arch 5;        then echo armv5
3468         elif check_arm_arch 5E;       then echo armv5e
3469         elif check_arm_arch 5T;       then echo armv5t
3470         elif check_arm_arch 5TE;      then echo armv5te
3471         elif check_arm_arch 5TEJ;     then echo armv5te
3472         elif check_arm_arch 6;        then echo armv6
3473         elif check_arm_arch 6J;       then echo armv6j
3474         elif check_arm_arch 6K;       then echo armv6k
3475         elif check_arm_arch 6Z;       then echo armv6z
3476         elif check_arm_arch 6ZK;      then echo armv6zk
3477         elif check_arm_arch 6T2;      then echo armv6t2
3478         elif check_arm_arch 7;        then echo armv7
3479         elif check_arm_arch 7A  7_A;  then echo armv7-a
3480         elif check_arm_arch 7S;       then echo armv7-a
3481         elif check_arm_arch 7R  7_R;  then echo armv7-r
3482         elif check_arm_arch 7M  7_M;  then echo armv7-m
3483         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3484         elif check_arm_arch 8A  8_A;  then echo armv8-a
3485         fi
3486     }
3487
3488     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3489
3490     case $cpu in
3491         armv*)
3492             cpuflags="-march=$cpu"
3493             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3494         ;;
3495         *)
3496             cpuflags="-mcpu=$cpu"
3497             case $cpu in
3498                 cortex-a*)                               subarch=armv7a  ;;
3499                 cortex-r*)                               subarch=armv7r  ;;
3500                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3501                 arm11*)                                  subarch=armv6   ;;
3502                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3503                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3504                 *)                             subarch=$(probe_arm_arch) ;;
3505             esac
3506         ;;
3507     esac
3508
3509     case "$subarch" in
3510         armv5t*)    enable fast_clz                ;;
3511         armv[6-8]*) enable fast_clz fast_unaligned ;;
3512     esac
3513
3514 elif enabled avr32; then
3515
3516     case $cpu in
3517         ap7[02]0[0-2])
3518             subarch="avr32_ap"
3519             cpuflags="-mpart=$cpu"
3520         ;;
3521         ap)
3522             subarch="avr32_ap"
3523             cpuflags="-march=$cpu"
3524         ;;
3525         uc3[ab]*)
3526             subarch="avr32_uc"
3527             cpuflags="-mcpu=$cpu"
3528         ;;
3529         uc)
3530             subarch="avr32_uc"
3531             cpuflags="-march=$cpu"
3532         ;;
3533     esac
3534
3535 elif enabled bfin; then
3536
3537     cpuflags="-mcpu=$cpu"
3538
3539 elif enabled mips; then
3540
3541     cpuflags="-march=$cpu"
3542
3543 elif enabled ppc; then
3544
3545     disable ldbrx
3546
3547     case $(tolower $cpu) in
3548         601|ppc601|powerpc601)
3549             cpuflags="-mcpu=601"
3550             disable altivec
3551         ;;
3552         603*|ppc603*|powerpc603*)
3553             cpuflags="-mcpu=603"
3554             disable altivec
3555         ;;
3556         604*|ppc604*|powerpc604*)
3557             cpuflags="-mcpu=604"
3558             disable altivec
3559         ;;
3560         g3|75*|ppc75*|powerpc75*)
3561             cpuflags="-mcpu=750"
3562             disable altivec
3563         ;;
3564         g4|745*|ppc745*|powerpc745*)
3565             cpuflags="-mcpu=7450"
3566             disable vsx
3567         ;;
3568         74*|ppc74*|powerpc74*)
3569             cpuflags="-mcpu=7400"
3570             disable vsx
3571         ;;
3572         g5|970|ppc970|powerpc970)
3573             cpuflags="-mcpu=970"
3574             disable vsx
3575         ;;
3576         power[3-6]*)
3577             cpuflags="-mcpu=$cpu"
3578             disable vsx
3579         ;;
3580         power[7-8]*)
3581             cpuflags="-mcpu=$cpu"
3582             enable ldbrx
3583         ;;
3584         cell)
3585             cpuflags="-mcpu=cell"
3586             enable ldbrx
3587             disable vsx
3588         ;;
3589         e500mc)
3590             cpuflags="-mcpu=e500mc"
3591             disable altivec
3592         ;;
3593         e500v2)
3594             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3595             disable altivec
3596             disable dcbzl
3597         ;;
3598         e500)
3599             cpuflags="-mcpu=8540 -mhard-float"
3600             disable altivec
3601             disable dcbzl
3602         ;;
3603     esac
3604
3605 elif enabled sparc; then
3606
3607     case $cpu in
3608         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3609             cpuflags="-mcpu=$cpu"
3610         ;;
3611         ultrasparc*|niagara[234])
3612             cpuflags="-mcpu=$cpu"
3613         ;;
3614     esac
3615
3616 elif enabled x86; then
3617
3618     case $cpu in
3619         i[345]86|pentium)
3620             cpuflags="-march=$cpu"
3621             disable i686
3622             disable mmx
3623         ;;
3624         # targets that do NOT support nopl and conditional mov (cmov)
3625         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3626             cpuflags="-march=$cpu"
3627             disable i686
3628         ;;
3629         # targets that do support nopl and conditional mov (cmov)
3630         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3631             cpuflags="-march=$cpu"
3632             enable i686
3633             enable fast_cmov
3634         ;;
3635         # targets that do support conditional mov but on which it's slow
3636         pentium4|pentium4m|prescott|nocona)
3637             cpuflags="-march=$cpu"
3638             enable i686
3639             disable fast_cmov
3640         ;;
3641     esac
3642
3643 fi
3644
3645 if [ "$cpu" != generic ]; then
3646     add_cflags  $cpuflags
3647     add_asflags $cpuflags
3648     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3649 fi
3650
3651 # compiler sanity check
3652 check_exec <<EOF
3653 int main(void){ return 0; }
3654 EOF
3655 if test "$?" != 0; then
3656     echo "$cc is unable to create an executable file."
3657     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3658         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3659         echo "Only do this if you know what cross compiling means."
3660     fi
3661     die "C compiler test failed."
3662 fi
3663
3664 add_cppflags -D_ISOC99_SOURCE
3665 check_cflags -std=c99
3666 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3667 #include <stdlib.h>
3668 EOF
3669 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3670 #include <stdlib.h>
3671 EOF
3672
3673 add_host_cppflags -D_ISOC99_SOURCE
3674 check_host_cflags -std=c99
3675 check_host_cflags -Wall
3676 check_host_cflags -O3
3677
3678 check_64bit(){
3679     arch32=$1
3680     arch64=$2
3681     expr=$3
3682     check_code cc "" "int test[2*($expr) - 1]" &&
3683         subarch=$arch64 || subarch=$arch32
3684 }
3685
3686 case "$arch" in
3687     aarch64|alpha|ia64)
3688         spic=$shared
3689     ;;
3690     mips)
3691         check_64bit mips mips64 '_MIPS_SIM > 1'
3692         spic=$shared
3693     ;;
3694     parisc)
3695         check_64bit parisc parisc64 'sizeof(void *) > 4'
3696         spic=$shared
3697     ;;
3698     ppc)
3699         check_64bit ppc ppc64 'sizeof(void *) > 4'
3700         spic=$shared
3701     ;;
3702     s390)
3703         check_64bit s390 s390x 'sizeof(void *) > 4'
3704         spic=$shared
3705     ;;
3706     sparc)
3707         check_64bit sparc sparc64 'sizeof(void *) > 4'
3708         spic=$shared
3709     ;;
3710     x86)
3711         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3712         if test "$subarch" = "x86_64"; then
3713             spic=$shared
3714         fi
3715     ;;
3716 esac
3717
3718 enable $subarch
3719 enabled spic && enable_weak pic
3720
3721 # OS specific
3722 case $target_os in
3723     aix)
3724         SHFLAGS=-shared
3725         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3726         enabled shared && add_ldflags -Wl,-brtl
3727         ;;
3728     android)
3729         disable symver
3730         enable section_data_rel_ro
3731         SLIB_INSTALL_NAME='$(SLIBNAME)'
3732         SLIB_INSTALL_LINKS=
3733         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3734         ;;
3735     haiku)
3736         prefix_default="/boot/common"
3737         network_extralibs="-lnetwork"
3738         host_libs=
3739         ;;
3740     sunos)
3741         SHFLAGS='-shared -Wl,-h,$$(@F)'
3742         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3743         network_extralibs="-lsocket -lnsl"
3744         # When using suncc to build, the Solaris linker will mark
3745         # an executable with each instruction set encountered by
3746         # the Solaris assembler.  As our libraries contain their own
3747         # guards for processor-specific code, instead suppress
3748         # generation of the HWCAPS ELF section on Solaris x86 only.
3749         enabled_all suncc x86 &&
3750             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3751             add_ldflags -Wl,-M,mapfile
3752         nm_default='nm -P -g'
3753         version_script='-M'
3754         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3755         ;;
3756     netbsd)
3757         disable symver
3758         oss_indev_extralibs="-lossaudio"
3759         oss_outdev_extralibs="-lossaudio"
3760         ;;
3761     openbsd|bitrig)
3762         disable symver
3763         SHFLAGS='-shared'
3764         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3765         SLIB_INSTALL_LINKS=
3766         oss_indev_extralibs="-lossaudio"
3767         oss_outdev_extralibs="-lossaudio"
3768         ;;
3769     dragonfly)
3770         disable symver
3771         ;;
3772     freebsd)
3773         ;;
3774     bsd/os)
3775         add_extralibs -lpoll -lgnugetopt
3776         ;;
3777     darwin)
3778         enabled ppc && add_asflags -force_cpusubtype_ALL
3779         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3780         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3781         add_ldflags -Wl,-dynamic,-search_paths_first
3782         SLIBSUF=".dylib"
3783         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3784         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3785         objformat="macho"
3786         enabled x86_64 && objformat="macho64"
3787         enabled_any pic shared ||
3788             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3789         check_header dispatch/dispatch.h &&
3790             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3791         ;;
3792     msys*)
3793         die "Native MSYS builds are discouraged, please use the MINGW environment."
3794         ;;
3795     mingw32*|mingw64*)
3796         if test $target_os = "mingw32ce"; then
3797             disable network
3798         else
3799             target_os=mingw32
3800         fi
3801         LIBTARGET=i386
3802         if enabled x86_64; then
3803             LIBTARGET="i386:x86-64"
3804         elif enabled arm; then
3805             LIBTARGET=arm-wince
3806         fi
3807         check_ldflags -Wl,--nxcompat
3808         check_ldflags -Wl,--dynamicbase
3809         shlibdir_default="$bindir_default"
3810         SLIBPREF=""
3811         SLIBSUF=".dll"
3812         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3813         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3814         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3815         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3816         SLIB_INSTALL_LINKS=
3817         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3818         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3819         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3820         objformat="win32"
3821         dlltool="${cross_prefix}dlltool"
3822         ranlib=:
3823         enable dos_paths
3824         ;;
3825     win32|win64)
3826         disable symver
3827         if enabled shared; then
3828             # Link to the import library instead of the normal static library
3829             # for shared libs.
3830             LD_LIB='%.lib'
3831             # Cannot build both shared and static libs with MSVC or icl.
3832             disable static
3833         fi
3834         shlibdir_default="$bindir_default"
3835         SLIBPREF=""
3836         SLIBSUF=".dll"
3837         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3838         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3839         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3840         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3841         SLIB_INSTALL_LINKS=
3842         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3843         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3844         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3845         objformat="win32"
3846         ranlib=:
3847         enable dos_paths
3848         ;;
3849     cygwin*)
3850         target_os=cygwin
3851         shlibdir_default="$bindir_default"
3852         SLIBPREF="cyg"
3853         SLIBSUF=".dll"
3854         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3855         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3856         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3857         SLIB_INSTALL_LINKS=
3858         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3859         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3860         objformat="win32"
3861         enable dos_paths
3862         ;;
3863     *-dos|freedos|opendos)
3864         network_extralibs="-lsocket"
3865         objformat="coff"
3866         enable dos_paths
3867         add_cppflags -U__STRICT_ANSI__
3868         ;;
3869     linux)
3870         enable dv1394
3871         enable section_data_rel_ro
3872         ;;
3873     irix*)
3874         target_os=irix
3875         ranlib="echo ignoring ranlib"
3876         ;;
3877     os/2*)
3878         ln_s="cp -f"
3879         objformat="aout"
3880         add_cppflags -D_GNU_SOURCE
3881         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3882         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3883         LIBSUF="_s.a"
3884         SLIBPREF=""
3885         SLIBSUF=".dll"
3886         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3887         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3888         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3889             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3890             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3891             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3892             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3893         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3894             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3895         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3896         enable dos_paths
3897         ;;
3898     gnu/kfreebsd)
3899         add_cppflags -D_BSD_SOURCE
3900         ;;
3901     gnu)
3902         ;;
3903     qnx)
3904         add_cppflags -D_QNX_SOURCE
3905         network_extralibs="-lsocket"
3906         ;;
3907     symbian)
3908         SLIBSUF=".dll"
3909         enable dos_paths
3910         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3911         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3912         add_ldflags -Wl,--target1-abs,--no-undefined \
3913                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3914                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3915         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3916                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3917                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3918         ;;
3919     osf1)
3920         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3921         ;;
3922     minix)
3923         ;;
3924     plan9)
3925         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3926                      -D_REENTRANT_SOURCE        \
3927                      -D_RESEARCH_SOURCE         \
3928                      -DFD_SETSIZE=96            \
3929                      -DHAVE_SOCK_OPTS
3930         add_compat strtod.o strtod=avpriv_strtod
3931         network_extralibs='-lbsd'
3932         exeobjs=compat/plan9/main.o
3933         cp_f='cp'
3934         ;;
3935     none)
3936         ;;
3937     *)
3938         die "Unknown OS '$target_os'."
3939         ;;
3940 esac
3941
3942 # determine libc flavour
3943
3944 probe_libc(){
3945     pfx=$1
3946     pfx_no_=${pfx%_}
3947     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3948     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3949         eval ${pfx}libc_type=uclibc
3950         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3951     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3952         eval ${pfx}libc_type=glibc
3953         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3954     # MinGW headers can be installed on Cygwin, so check for newlib first.
3955     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3956         eval ${pfx}libc_type=newlib
3957         add_${pfx}cppflags -U__STRICT_ANSI__
3958     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3959     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3960         eval ${pfx}libc_type=mingw64
3961         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3962         eval test \$${pfx_no_}cc_type = "gcc" &&
3963             add_${pfx}cppflags -D__printf__=__gnu_printf__
3964     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3965          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3966         eval ${pfx}libc_type=mingw32
3967         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3968             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3969             die "ERROR: MinGW32 runtime version must be >= 3.15."
3970         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3971         eval test \$${pfx_no_}cc_type = "gcc" &&
3972             add_${pfx}cppflags -D__printf__=__gnu_printf__
3973     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3974         eval ${pfx}libc_type=msvcrt
3975         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
3976             if [ "$pfx" = host_ ]; then
3977                 add_host_cppflags -Dsnprintf=_snprintf
3978             else
3979                 add_compat strtod.o strtod=avpriv_strtod
3980                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3981                                              _snprintf=avpriv_snprintf  \
3982                                              vsnprintf=avpriv_vsnprintf
3983             fi
3984         fi
3985         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3986         # 0x601 by default unless something else is set by the user.
3987         # This can easily lead to us detecting functions only present
3988         # in such new versions and producing binaries requiring windows 7.0.
3989         # Therefore explicitly set the default to XP unless the user has
3990         # set something else on the command line.
3991         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
3992         # family. For these cases, configure is free to use any functions
3993         # found in the SDK headers by default. (Alternatively, we could force
3994         # _WIN32_WINNT to 0x0602 in that case.)
3995         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3996             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
3997 #ifdef WINAPI_FAMILY
3998 #include <winapifamily.h>
3999 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4000 #error not desktop
4001 #endif
4002 #endif
4003 EOF
4004     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4005         eval ${pfx}libc_type=klibc
4006     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4007         eval ${pfx}libc_type=bionic
4008     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4009         eval ${pfx}libc_type=solaris
4010         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4011     else
4012         eval ${pfx}libc_type=default
4013         add_${pfx}cppflags -D_DEFAULT_SOURCE
4014     fi
4015 }
4016
4017 probe_libc
4018 test -n "$libc_type" && enable libc_$libc_type
4019 probe_libc host_
4020 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4021
4022 case $libc_type in
4023     bionic)
4024         add_compat strtod.o strtod=avpriv_strtod
4025         ;;
4026 esac
4027
4028 # hacks for compiler/libc/os combinations
4029
4030 if enabled_all tms470 libc_glibc; then
4031     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4032     add_cppflags -D__USER_LABEL_PREFIX__=
4033     add_cppflags -D__builtin_memset=memset
4034     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4035     add_cflags   -pds=48    # incompatible redefinition of macro
4036 fi
4037
4038 if enabled_all ccc libc_glibc; then
4039     add_ldflags -Wl,-z,now  # calls to libots crash without this
4040 fi
4041
4042 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4043     add_cppflags '-I\$(SRC_PATH)/compat/float'
4044
4045 esc(){
4046     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4047 }
4048
4049 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
4050
4051 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4052
4053 set_default $PATHS_LIST
4054 set_default nm
4055
4056 # we need to build at least one lib type
4057 if ! enabled_any static shared; then
4058     cat <<EOF
4059 At least one library type must be built.
4060 Specify --enable-static to build the static libraries or --enable-shared to
4061 build the shared libraries as well. To only build the shared libraries specify
4062 --disable-static in addition to --enable-shared.
4063 EOF
4064     exit 1
4065 fi
4066
4067 die_license_disabled() {
4068     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
4069 }
4070
4071 die_license_disabled gpl libcdio
4072 die_license_disabled gpl libx264
4073 die_license_disabled gpl libx265
4074 die_license_disabled gpl libxavs
4075 die_license_disabled gpl libxvid
4076 die_license_disabled gpl x11grab
4077
4078 die_license_disabled nonfree cuda
4079 die_license_disabled nonfree libfaac
4080 die_license_disabled nonfree libfdk_aac
4081 die_license_disabled nonfree libnpp
4082 die_license_disabled nonfree openssl
4083
4084 die_license_disabled version3 libopencore_amrnb
4085 die_license_disabled version3 libopencore_amrwb
4086 die_license_disabled version3 libvo_aacenc
4087 die_license_disabled version3 libvo_amrwbenc
4088
4089 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4090
4091 disabled optimizations || check_cflags -fomit-frame-pointer
4092
4093 enable_weak_pic() {
4094     disabled pic && return
4095     enable pic
4096     add_cppflags -DPIC
4097     case "$target_os" in
4098     mingw*|cygwin*)
4099         ;;
4100     *)
4101         add_cflags -fPIC
4102         ;;
4103     esac
4104     add_asflags  -fPIC
4105 }
4106
4107 enabled pic && enable_weak_pic
4108
4109 check_cc <<EOF || die "Symbol mangling check failed."
4110 int ff_extern;
4111 EOF
4112 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4113 extern_prefix=${sym%%ff_extern*}
4114
4115 check_cc <<EOF && enable_weak inline_asm
4116 void foo(void) { __asm__ volatile ("" ::); }
4117 EOF
4118
4119 _restrict=
4120 for restrict_keyword in restrict __restrict__ __restrict; do
4121     check_cc <<EOF && _restrict=$restrict_keyword && break
4122 void foo(char * $restrict_keyword p);
4123 EOF
4124 done
4125
4126 check_cc <<EOF && enable pragma_deprecated
4127 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4128 EOF
4129
4130 check_cc <<EOF && enable attribute_packed
4131 struct { int x; } __attribute__((packed)) x;
4132 EOF
4133
4134 check_cc <<EOF && enable attribute_may_alias
4135 union { int x; } __attribute__((may_alias)) x;
4136 EOF
4137
4138 check_cc <<EOF || die "endian test failed"
4139 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4140 EOF
4141 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4142
4143 check_gas() {
4144     log "check_gas using '$as' as AS"
4145     # :vararg is used on aarch64, arm and ppc altivec
4146     check_as <<EOF || return 1
4147 .macro m n, y:vararg=0
4148 \n: .int \y
4149 .endm
4150 m x
4151 EOF
4152     # .altmacro is only used in arm asm
4153     ! enabled arm || check_as <<EOF || return 1
4154 .altmacro
4155 EOF
4156     enable gnu_as
4157     return 0
4158 }
4159
4160 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4161     nogas=:
4162     enabled_any arm aarch64 && nogas=die
4163     enabled_all ppc altivec && nogas=warn
4164     as_noop=-v
4165
4166     case $as_type in
4167         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4168         gcc)  gaspp_as_type=gas ;;
4169         *)    gaspp_as_type=$as_type ;;
4170     esac
4171
4172     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4173
4174     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4175         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4176
4177     if ! check_gas ; then
4178         as=${gas:=$as}
4179         check_gas || \
4180             $nogas "GNU assembler not found, install/update gas-preprocessor"
4181     fi
4182
4183     check_as <<EOF && enable as_func
4184 .func test
4185 .endfunc
4186 EOF
4187 fi
4188
4189 check_inline_asm inline_asm_labels '"1:\n"'
4190
4191 if enabled aarch64; then
4192     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4193     # internal assembler in clang 3.3 does not support this instruction
4194     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4195     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4196
4197     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4198
4199 elif enabled alpha; then
4200
4201     check_cflags -mieee
4202
4203 elif enabled arm; then
4204
4205     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4206     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4207     enabled thumb && check_cflags -mthumb || check_cflags -marm
4208
4209     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4210         enable vfp_args
4211     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4212         enable vfp_args
4213     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4214         case "${cross_prefix:-$cc}" in
4215             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4216             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4217 __asm__ (".eabi_attribute 28, 1");
4218 int main(void) { return 0; }
4219 EOF
4220         esac
4221         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4222     fi
4223
4224     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4225     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4226     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4227     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4228     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4229     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4230
4231     [ $target_os = linux ] || [ $target_os = android ] ||
4232         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4233             $ARCH_EXT_LIST_ARM
4234
4235     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4236
4237     check_as <<EOF && enable as_dn_directive
4238 ra .dn d0.i16
4239 .unreq ra
4240 EOF
4241
4242     # llvm's integrated assembler supports .object_arch from llvm 3.5
4243     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4244 .object_arch armv4
4245 EOF
4246
4247     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4248
4249 elif enabled mips; then
4250
4251     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4252
4253     # make sure that only an instruction set is enabled
4254     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4255
4256     if enabled mips64; then
4257         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4258             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4259                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4260     else
4261         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4262             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4263                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4264     fi
4265
4266 elif enabled parisc; then
4267
4268     if enabled gcc; then
4269         case $($cc -dumpversion) in
4270             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4271         esac
4272     fi
4273
4274 elif enabled ppc; then
4275
4276     enable local_aligned_8 local_aligned_16
4277
4278     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4279     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4280     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4281     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4282
4283     # AltiVec flags: The FSF version of GCC differs from the Apple version
4284     if enabled altivec; then
4285         check_cflags -maltivec -mabi=altivec &&
4286         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4287         check_cflags -faltivec
4288
4289         # check if our compiler supports Motorola AltiVec C API
4290         check_cc <<EOF || disable altivec
4291 $inc_altivec_h
4292 int main(void) {
4293     vector signed int v1 = (vector signed int) { 0 };
4294     vector signed int v2 = (vector signed int) { 1 };
4295     v1 = vec_add(v1, v2);
4296     return 0;
4297 }
4298 EOF
4299
4300         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4301     fi
4302
4303     if enabled vsx; then
4304         check_cflags -mvsx &&
4305         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4306     fi
4307
4308     if enabled power8; then
4309         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4310     fi
4311
4312 elif enabled x86; then
4313
4314     check_builtin rdtsc    intrin.h   "__rdtsc()"
4315     check_builtin mm_empty mmintrin.h "_mm_empty()"
4316
4317     enable local_aligned_8 local_aligned_16
4318
4319     # check whether EBP is available on x86
4320     # As 'i' is stored on the stack, this program will crash
4321     # if the base pointer is used to access it because the
4322     # base pointer is cleared in the inline assembly code.
4323     check_exec_crash <<EOF && enable ebp_available
4324 volatile int i=0;
4325 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4326 return i;
4327 EOF
4328
4329     # check whether EBX is available on x86
4330     check_inline_asm ebx_available '""::"b"(0)' &&
4331         check_inline_asm ebx_available '"":::"%ebx"'
4332
4333     # check whether xmm clobbers are supported
4334     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4335
4336     # check whether binutils is new enough to compile SSSE3/MMXEXT
4337     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4338     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4339
4340     if ! disabled_any asm mmx yasm; then
4341         if check_cmd $yasmexe --version; then
4342             enabled x86_64 && yasm_extra="-m amd64"
4343             yasm_debug="-g dwarf2"
4344         elif check_cmd nasm -v; then
4345             yasmexe=nasm
4346             yasm_debug="-g -F dwarf"
4347             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4348         fi
4349
4350         YASMFLAGS="-f $objformat $yasm_extra"
4351         enabled pic               && append YASMFLAGS "-DPIC"
4352         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4353         case "$objformat" in
4354             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4355         esac
4356
4357         check_yasm "movbe ecx, [5]" && enable yasm ||
4358             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4359         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4360         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4361         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4362         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4363         check_yasm "CPU amdnop" || disable cpunop
4364     fi
4365
4366     case "$cpu" in
4367         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4368             disable fast_clz
4369         ;;
4370     esac
4371
4372 fi
4373
4374 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4375
4376 check_ldflags -Wl,--as-needed
4377
4378 if check_func dlopen; then
4379     ldl=
4380 elif check_func dlopen -ldl; then
4381     ldl=-ldl
4382 fi
4383
4384 if ! disabled network; then
4385     check_func getaddrinfo $network_extralibs
4386     check_func inet_aton $network_extralibs
4387
4388     check_type netdb.h "struct addrinfo"
4389     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4390     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4391     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4392     check_type poll.h "struct pollfd"
4393     check_type netinet/sctp.h "struct sctp_event_subscribe"
4394     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4395     check_type netinet/in.h "struct sockaddr_in6"
4396     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4397     check_type "sys/types.h sys/socket.h" socklen_t
4398
4399     # Prefer arpa/inet.h over winsock2
4400     if check_header arpa/inet.h ; then
4401         check_func closesocket
4402     elif check_header winsock2.h ; then
4403         check_func_headers winsock2.h closesocket -lws2 &&
4404             network_extralibs="-lws2" ||
4405         { check_func_headers winsock2.h closesocket -lws2_32 &&
4406             network_extralibs="-lws2_32"; } || disable winsock2_h network
4407         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4408
4409         check_type ws2tcpip.h socklen_t
4410         check_type ws2tcpip.h "struct addrinfo"
4411         check_type ws2tcpip.h "struct group_source_req"
4412         check_type ws2tcpip.h "struct ip_mreq_source"
4413         check_type ws2tcpip.h "struct ipv6_mreq"
4414         check_type winsock2.h "struct pollfd"
4415         check_struct winsock2.h "struct sockaddr" sa_len
4416         check_type ws2tcpip.h "struct sockaddr_in6"
4417         check_type ws2tcpip.h "struct sockaddr_storage"
4418     else
4419         disable network
4420     fi
4421 fi
4422
4423 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4424 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4425 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4426 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4427
4428 case "$custom_allocator" in
4429     jemalloc)
4430         # jemalloc by default does not use a prefix
4431         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4432     ;;
4433     tcmalloc)
4434         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
4435         malloc_prefix=tc_
4436     ;;
4437 esac
4438
4439 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4440 check_func  ${malloc_prefix}memalign            && enable memalign
4441 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4442
4443 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4444     check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4445
4446 check_func  fcntl
4447 check_func  fork
4448 check_func  gethrtime
4449 check_func  getopt
4450 check_func  getrusage
4451 check_func  gettimeofday
4452 check_func  gmtime_r
4453 check_func  isatty
4454 check_func  localtime_r
4455 check_func  mach_absolute_time
4456 check_func  mkstemp
4457 check_func  mmap
4458 check_func  mprotect
4459 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4460 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4461 check_func  sched_getaffinity
4462 check_func  setrlimit
4463 check_func  strerror_r
4464 check_func  sysconf
4465 check_func  sysctl
4466 check_func  usleep
4467
4468 check_func_headers io.h setmode
4469 check_func_headers stdlib.h getenv
4470
4471 check_func_headers windows.h CoTaskMemFree -lole32
4472 check_func_headers windows.h GetProcessAffinityMask
4473 check_func_headers windows.h GetProcessTimes
4474 check_func_headers windows.h GetSystemTimeAsFileTime
4475 check_func_headers windows.h LoadLibrary
4476 check_func_headers windows.h MapViewOfFile
4477 check_func_headers windows.h SetConsoleTextAttribute
4478 check_func_headers windows.h Sleep
4479 check_func_headers windows.h VirtualAlloc
4480 check_struct windows.h "CONDITION_VARIABLE" Ptr
4481
4482 check_header direct.h
4483 check_header dlfcn.h
4484 check_header d3d11.h
4485 check_header dxva.h
4486 check_header dxva2api.h
4487 check_header io.h
4488 check_header mach/mach_time.h
4489 check_header malloc.h
4490 check_header poll.h
4491 check_header sys/mman.h
4492 check_header sys/param.h
4493 check_header sys/resource.h
4494 check_header sys/select.h
4495 check_header sys/time.h
4496 check_header sys/un.h
4497 check_header unistd.h
4498 check_header valgrind/valgrind.h
4499 check_header vdpau/vdpau.h
4500 check_header vdpau/vdpau_x11.h
4501 check_header VideoDecodeAcceleration/VDADecoder.h
4502 check_header windows.h
4503 check_header X11/extensions/XvMClib.h
4504
4505 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4506 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4507 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4508
4509 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4510
4511 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4512 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4513 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4514
4515 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4516 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4517 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4518 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4519
4520 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4521
4522 if ! disabled w32threads && ! enabled pthreads; then
4523     check_func_headers "windows.h process.h" _beginthreadex &&
4524         enable w32threads || disable w32threads
4525 fi
4526
4527 # check for some common methods of building with pthread support
4528 # do this before the optional library checks as some of them require pthreads
4529 if ! disabled pthreads && ! enabled w32threads; then
4530     enable pthreads
4531     if check_func pthread_join -pthread; then
4532         add_cflags -pthread
4533         add_extralibs -pthread
4534     elif check_func pthread_join -pthreads; then
4535         add_cflags -pthreads
4536         add_extralibs -pthreads
4537     elif check_func pthread_join -lpthreadGC2; then
4538         add_extralibs -lpthreadGC2
4539     elif check_lib pthread.h pthread_join -lpthread; then
4540         :
4541     elif ! check_func pthread_join; then
4542         disable pthreads
4543     fi
4544 fi
4545
4546 enabled pthreads &&
4547     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
4548
4549 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4550 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4551
4552 check_lib math.h sin -lm && LIBM="-lm"
4553 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4554
4555 atan2f_args=2
4556 ldexpf_args=2
4557 powf_args=2
4558
4559 for func in $MATH_FUNCS; do
4560     eval check_mathfunc $func \${${func}_args:-1}
4561 done
4562
4563 # these are off by default, so fail if requested and not available
4564 enabled avisynth          && { check_lib2 "avisynth/avisynth_c.h windows.h" LoadLibrary ||
4565                                check_lib2 "avxsynth/avxsynth_c.h dlfcn.h" dlopen -ldl   ||
4566                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4567 enabled cuda              && check_lib cuda.h cuInit -lcuda
4568 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4569 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4570 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4571 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4572 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4573 enabled libfdk_aac        && require_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4574 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4575 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4576 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4577                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4578                                done || die "ERROR: libgsm not found"; }
4579 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4580 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4581 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
4582 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4583 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4584 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4585 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4586 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4587 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
4588 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4589                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4590 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4591 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4592 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4593 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4594 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
4595 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4596 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4597 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4598 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4599 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4600 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4601 enabled libvpx            && require_pkg_config "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version && {
4602     enabled libvpx_vp8_decoder && {
4603         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
4604             disable libvpx_vp8_decoder;
4605     }
4606     enabled libvpx_vp8_encoder && {
4607         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
4608             disable libvpx_vp8_encoder;
4609     }
4610     enabled libvpx_vp9_decoder && {
4611         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
4612             disable libvpx_vp9_decoder;
4613     }
4614     enabled libvpx_vp9_encoder && {
4615         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
4616             disable libvpx_vp9_encoder;
4617     }
4618     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
4619         die "libvpx enabled but no supported decoders found"
4620     fi
4621 }
4622 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4623 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4624 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4625                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4626                                die "ERROR: libx264 version must be >= 0.118."; } &&
4627                              { check_cpp_condition x264.h "X264_MPEG2" &&
4628                                enable libx262; }
4629 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
4630                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
4631                                die "ERROR: libx265 version must be >= 57."; }
4632 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4633 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4634 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4635                                 { ! enabled cross_compile && {
4636                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
4637                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
4638                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
4639                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
4640                                die "ERROR: mmal not found"; }
4641 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
4642 enabled omx_rpi && enable omx
4643 enabled omx               && { check_header OMX_Core.h ||
4644                                 { ! enabled cross_compile && enabled omx_rpi && {
4645                                     add_cflags -isystem/opt/vc/include/IL ; }
4646                                 check_header OMX_Core.h ; } ||
4647                                die "ERROR: OpenMAX IL headers not found"; }
4648 enabled openssl           && { check_pkg_config openssl openssl/ssl.h SSL_library_init && {
4649                                add_cflags $openssl_cflags && add_extralibs $openssl_libs; }||
4650                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4651                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4652                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4653                                die "ERROR: openssl not found"; }
4654
4655 if enabled gnutls; then
4656     { check_lib2 gmp.h mpz_export -lgmp && enable gmp; } ||
4657     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4658 fi
4659
4660 # libdc1394 check
4661 if enabled libdc1394; then
4662     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
4663         enable libdc1394_2; } ||
4664     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4665         enable libdc1394_1; } ||
4666     die "ERROR: No version of libdc1394 found "
4667 fi
4668
4669 if enabled nvenc; then
4670     check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."
4671     check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6" ||
4672         die "ERROR: NVENC API version 5 or older is not supported"
4673 fi
4674
4675 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4676     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4677     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4678     enable sdl
4679 fi
4680
4681 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4682 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4683
4684 check_header linux/fb.h
4685 check_header linux/videodev2.h
4686 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4687
4688 check_header AVFoundation/AVFoundation.h &&
4689     check_objcflags -fobjc-arc &&
4690     add_extralibs -framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia ||
4691     disable AVFoundation_AVFoundation_h
4692
4693 check_header sys/videoio.h
4694
4695 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4696 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4697 # w32api 3.12 had it defined wrong
4698 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4699
4700 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4701 { check_header dev/bktr/ioctl_meteor.h &&
4702   check_header dev/bktr/ioctl_bt848.h; } ||
4703 { check_header machine/ioctl_meteor.h &&
4704   check_header machine/ioctl_bt848.h; } ||
4705 { check_header dev/video/meteor/ioctl_meteor.h &&
4706   check_header dev/video/bktr/ioctl_bt848.h; } ||
4707 check_header dev/ic/bt8xx.h
4708
4709 check_header sndio.h
4710 check_header sys/soundcard.h
4711 check_header soundcard.h
4712
4713 enabled_any alsa_indev alsa_outdev &&
4714     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4715
4716 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4717     check_func jack_port_get_latency_range -ljack
4718
4719 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4720
4721 if enabled libcdio; then
4722     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4723     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4724     die "ERROR: No usable libcdio/cdparanoia found"
4725 fi
4726
4727 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4728
4729 if enabled libxcb || enabled x11grab && ! disabled libxcb; then
4730     check_pkg_config xcb-shape xcb/shape.h xcb_shape_rectangles || {
4731         enabled libxcb && die "ERROR: libxcb not found";
4732     } && disable x11grab && enable libxcb
4733
4734     disabled libxcb_shm ||
4735         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
4736             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
4737         } && check_header sys/shm.h && enable libxcb_shm
4738
4739     disabled libxcb_xfixes ||
4740         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
4741             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
4742         } && enable libxcb_xfixes
4743
4744     add_cflags "$xcb_event_cflags $xcb_shm_cflags $xcb_xfixes_cflags"
4745     add_extralibs "$xcb_event_libs $xcb_shm_libs $xcb_xfixes_libs"
4746 fi
4747
4748 if enabled x11grab; then
4749     enabled xlib || die "ERROR: Xlib not found"
4750     require Xext X11/extensions/XShm.h XShmCreateImage -lXext
4751     require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
4752 fi
4753
4754 enabled vaapi &&
4755     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
4756     disable vaapi
4757
4758 if enabled vaapi ; then
4759     enabled xlib &&
4760     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
4761     enable vaapi_x11
4762
4763     check_lib2 "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
4764     enable vaapi_drm
4765 fi
4766
4767 enabled vdpau &&
4768     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4769     disable vdpau
4770
4771 enabled vdpau && enabled xlib &&
4772     check_lib2 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4773     enable vdpau_x11
4774
4775 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"