lavc: align the linesize to 32 when AVX is enabled
[libav.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89   --enable-rpath           use rpath when linking programs [USE WITH CARE]
90
91 Licensing options:
92   --enable-gpl             allow use of GPL code, the resulting libs
93                            and binaries will be under GPL [no]
94   --enable-version3        upgrade (L)GPL to version 3 [no]
95   --enable-nonfree         allow use of nonfree code, the resulting libs
96                            and binaries will be unredistributable [no]
97
98 Configuration options:
99   --disable-static         do not build static libraries [no]
100   --enable-shared          build shared libraries [no]
101   --enable-small           optimize for size instead of speed
102   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
103   --enable-gray            enable full grayscale support (slower color)
104   --disable-swscale-alpha  disable alpha channel support in swscale
105   --disable-all            disable building components, libraries and programs
106
107 Program options:
108   --disable-programs       do not build command line programs
109   --disable-avconv         disable avconv build
110   --disable-avplay         disable avplay build
111   --disable-avprobe        disable avprobe build
112   --disable-avserver       deprecated, does nothing
113
114 Component options:
115   --disable-doc            do not build documentation
116   --disable-avdevice       disable libavdevice build
117   --disable-avcodec        disable libavcodec build
118   --disable-avformat       disable libavformat build
119   --disable-avutil         disable libavutil build
120   --disable-swscale        disable libswscale build
121   --disable-avfilter       disable video filter support [no]
122   --disable-avresample     disable libavresample build [no]
123   --disable-pthreads       disable pthreads [auto]
124   --disable-w32threads     disable Win32 threads [auto]
125   --disable-network        disable network support [no]
126   --disable-dct            disable DCT code
127   --disable-error-resilience disable error resilience code
128   --disable-lsp            disable LSP code
129   --disable-lzo            disable LZO decoder code
130   --disable-mdct           disable MDCT code
131   --disable-rdft           disable RDFT code
132   --disable-fft            disable FFT code
133   --disable-faan           disable floating point AAN (I)DCT code
134
135 Individual component options:
136   --disable-everything     disable all components listed below
137   --disable-encoder=NAME   disable encoder NAME
138   --enable-encoder=NAME    enable encoder NAME
139   --disable-encoders       disable all encoders
140   --disable-decoder=NAME   disable decoder NAME
141   --enable-decoder=NAME    enable decoder NAME
142   --disable-decoders       disable all decoders
143   --disable-hwaccel=NAME   disable hwaccel NAME
144   --enable-hwaccel=NAME    enable hwaccel NAME
145   --disable-hwaccels       disable all hwaccels
146   --disable-muxer=NAME     disable muxer NAME
147   --enable-muxer=NAME      enable muxer NAME
148   --disable-muxers         disable all muxers
149   --disable-demuxer=NAME   disable demuxer NAME
150   --enable-demuxer=NAME    enable demuxer NAME
151   --disable-demuxers       disable all demuxers
152   --enable-parser=NAME     enable parser NAME
153   --disable-parser=NAME    disable parser NAME
154   --disable-parsers        disable all parsers
155   --enable-bsf=NAME        enable bitstream filter NAME
156   --disable-bsf=NAME       disable bitstream filter NAME
157   --disable-bsfs           disable all bitstream filters
158   --enable-protocol=NAME   enable protocol NAME
159   --disable-protocol=NAME  disable protocol NAME
160   --disable-protocols      disable all protocols
161   --enable-indev=NAME      enable input device NAME
162   --disable-indev=NAME     disable input device NAME
163   --disable-indevs         disable input devices
164   --enable-outdev=NAME     enable output device NAME
165   --disable-outdev=NAME    disable output device NAME
166   --disable-outdevs        disable output devices
167   --disable-devices        disable all devices
168   --enable-filter=NAME     enable filter NAME
169   --disable-filter=NAME    disable filter NAME
170   --disable-filters        disable all filters
171
172 External library support:
173
174   Using any of the following switches will allow Libav to link to the
175   corresponding external library. All the components depending on that library
176   will become enabled, if all their other dependencies are met and they are not
177   explicitly disabled. E.g. --enable-libwavpack will enable linking to
178   libwavpack and allow the libwavpack encoder to be built, unless it is
179   specifically disabled with --disable-encoder=libwavpack.
180
181   Note that only the system libraries are auto-detected. All the other external
182   libraries must be explicitly enabled.
183
184   Also note that the following help text describes the purpose of the libraries
185   themselves, not all their features will necessarily be usable by Libav.
186
187   --enable-avisynth          video frameserver
188   --enable-bzlib             bzip2 compression [autodetect]
189   --enable-frei0r            video filtering plugins
190   --enable-gnutls            crypto
191   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
192   --enable-libcdio           audio CD input
193   --enable-libdc1394         IEEE 1394/Firewire camera input
194   --enable-libdcadec         DCA audio decoding
195   --enable-libfaac           AAC audio encoding
196   --enable-libfdk-aac        AAC audio encoding/decoding
197   --enable-libfontconfig     font configuration and management
198   --enable-libfreetype       font rendering
199   --enable-libgsm            GSM audio encoding/decoding
200   --enable-libilbc           ILBC audio encoding/decoding
201   --enable-libkvazaar        HEVC video encoding
202   --enable-libmp3lame        MP3 audio encoding
203   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
204   --enable-libopencore-amrwb AMR-WB audio decoding
205   --enable-libopencv         computer vision
206   --enable-libopenh264       H.264 video encoding/decoding
207   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
208   --enable-libopus           Opus audio encoding/decoding
209   --enable-libpulse          Pulseaudio sound server
210   --enable-librtmp           RTMP streaming
211   --enable-libschroedinger   Dirac video encoding/decoding
212   --enable-libsnappy         snappy compression
213   --enable-libspeex          Speex audio encoding/decoding
214   --enable-libtheora         Theora video encoding/decoding
215   --enable-libtwolame        MP2 audio encoding
216   --enable-libvo-aacenc      AAC audio encoding
217   --enable-libvo-amrwbenc    AMR-WB audio encoding
218   --enable-libvorbis         Vorbis audio encoding/decoding
219   --enable-libvpx            VP* video encoding/decoding
220   --enable-libwavpack        Wavpack audio encoding/decoding
221   --enable-libwebp           WebP image encoding/decoding
222   --enable-libx264           H.264 video encoding
223   --enable-libx265           HEVC video encoding
224   --enable-libxavs           Chinese AVS video encoding
225   --enable-libxcb            X window system protocol communication
226   --enable-libxcb-shm        X11 shm communication [auto]
227   --enable-libxcb-xfixes     X11 mouse rendering [auto]
228   --enable-libxvid           MPEG-4 ASP video encoding
229   --enable-openssl           crypto
230   --enable-zlib              compression [autodetect]
231
232   The following libraries provide various hardware acceleration features:
233   --enable-cuda    Nvidia CUDA (dynamically linked)
234   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
235   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
236   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
237   --enable-libnpp  Nvidia CUDA processing
238   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
239   --enable-nvenc   Nvidia video encoding
240   --enable-omx     OpenMAX IL
241   --enable-omx-rpi OpenMAX IL for Raspberry Pi
242   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
243   --enable-vda     Apple Video Decode Acceleration [auto]
244   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
245
246 Toolchain options:
247   --arch=ARCH              select architecture [$arch]
248   --cpu=CPU                select the minimum required CPU (affects
249                            instruction selection, may crash on older CPUs)
250   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
251   --enable-cross-compile   assume a cross-compiler is used
252   --sysroot=PATH           root of cross-build tree
253   --sysinclude=PATH        location of cross-build system headers
254   --target-os=OS           compiler targets OS [$target_os]
255   --target-exec=CMD        command to run executables on target
256   --target-path=DIR        path to view of build directory on target
257   --target-samples=DIR     path to samples directory on target
258   --toolchain=NAME         set tool defaults according to NAME
259   --nm=NM                  use nm tool
260   --ar=AR                  use archive tool AR [$ar_default]
261   --as=AS                  use assembler AS [$as_default]
262   --cc=CC                  use C compiler CC [$cc_default]
263   --objcc=OCC              use ObjC compiler OCC [$cc_default]
264   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
265   --ld=LD                  use linker LD
266   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
267   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
268   --host-cc=HOSTCC         use host C compiler HOSTCC
269   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
270   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
271   --host-ld=HOSTLD         use host linker HOSTLD
272   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
273   --host-libs=HLIBS        use libs HLIBS when linking for host
274   --host-os=OS             compiler host OS [$target_os]
275   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
276   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
277   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
278   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
279   --extra-libs=ELIBS       add ELIBS [$ELIBS]
280   --extra-version=STRING   version string suffix []
281   --optflags=OPTFLAGS      override optimization-related compiler flags
282   --build-suffix=SUFFIX    library name suffix []
283   --enable-pic             build position-independent code
284   --enable-thumb           compile for Thumb instruction set
285   --enable-lto             use link-time optimization
286   --env="ENV=override"     override the environment variables
287
288 Advanced options (experts only):
289   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
290   --custom-allocator=NAME  use a supported custom allocator
291   --disable-symver         disable symbol versioning
292   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
293   --disable-safe-bitstream-reader
294                            disable buffer boundary checking in bitreaders
295                            (faster, but may crash)
296   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
297   --enable-sram            allow use of on-chip SRAM
298
299 Optimization options (experts only):
300   --disable-asm            disable all assembly optimizations
301   --disable-altivec        disable AltiVec optimizations
302   --disable-vsx            disable VSX optimizations
303   --disable-power8         disable POWER8 optimizations
304   --disable-amd3dnow       disable 3DNow! optimizations
305   --disable-amd3dnowext    disable 3DNow! extended optimizations
306   --disable-mmx            disable MMX optimizations
307   --disable-mmxext         disable MMXEXT optimizations
308   --disable-sse            disable SSE optimizations
309   --disable-sse2           disable SSE2 optimizations
310   --disable-sse3           disable SSE3 optimizations
311   --disable-ssse3          disable SSSE3 optimizations
312   --disable-sse4           disable SSE4 optimizations
313   --disable-sse42          disable SSE4.2 optimizations
314   --disable-avx            disable AVX optimizations
315   --disable-xop            disable XOP optimizations
316   --disable-fma3           disable FMA3 optimizations
317   --disable-fma4           disable FMA4 optimizations
318   --disable-avx2           disable AVX2 optimizations
319   --disable-armv5te        disable armv5te optimizations
320   --disable-armv6          disable armv6 optimizations
321   --disable-armv6t2        disable armv6t2 optimizations
322   --disable-vfp            disable VFP optimizations
323   --disable-neon           disable NEON optimizations
324   --disable-inline-asm     disable use of inline assembly
325   --disable-yasm           disable use of nasm/yasm assembly
326
327 Developer options (useful when working on Libav itself):
328   --disable-debug          disable debugging symbols
329   --enable-debug=LEVEL     set the debug level [$debuglevel]
330   --disable-optimizations  disable compiler optimizations
331   --enable-extra-warnings  enable more compiler warnings
332   --samples=PATH           location of test samples for FATE, if not set use
333                            \$LIBAV_SAMPLES at make invocation time.
334   --enable-neon-clobber-test check NEON registers for clobbering (should be
335                            used only for debugging purposes)
336   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
337                            should be used only for debugging purposes)
338   --enable-random          randomly enable/disable components
339   --disable-random
340   --enable-random=LIST     randomly enable/disable specific components or
341   --disable-random=LIST    component groups. LIST is a comma-separated list
342                            of NAME[:PROB] entries where NAME is a component
343                            (group) and PROB the probability associated with
344                            NAME (default 0.5).
345   --random-seed=VALUE      seed value for --enable/disable-random
346   --disable-valgrind-backtrace do not print a backtrace under Valgrind
347                            (only applies to --disable-optimizations builds)
348
349 NOTE: Object files are built at the place where configure is launched.
350 EOF
351   exit 0
352 }
353
354 quotes='""'
355
356 log(){
357     echo "$@" >> $logfile
358 }
359
360 log_file(){
361     log BEGIN $1
362     i=1
363     while read line; do
364         printf '%5s   %s\n' "${i}" "${line}"
365         i=$(($i+1))
366     done < $1 >> $logfile
367     log END $1
368 }
369
370 echolog(){
371     log "$@"
372     echo "$@"
373 }
374
375 warn(){
376     log "WARNING: $*"
377     WARNINGS="${WARNINGS}WARNING: $*\n"
378 }
379
380 die(){
381     echolog "$@"
382     cat <<EOF
383
384 If you think configure made a mistake, make sure you are using the latest
385 version from Git.  If the latest version fails, report the problem to the
386 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
387 EOF
388     if disabled logging; then
389         cat <<EOF
390 Rerun configure with logging enabled (do not use --disable-logging), and
391 include the log this produces with your report.
392 EOF
393     else
394         cat <<EOF
395 Include the log file "$logfile" produced by configure as this will help
396 solving the problem.
397 EOF
398     fi
399     exit 1
400 }
401
402 # Avoid locale weirdness, besides we really just want to translate ASCII.
403 toupper(){
404     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
405 }
406
407 tolower(){
408     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
409 }
410
411 c_escape(){
412     echo "$*" | sed 's/["\\]/\\\0/g'
413 }
414
415 sh_quote(){
416     v=$(echo "$1" | sed "s/'/'\\\\''/g")
417     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
418     echo "$v"
419 }
420
421 cleanws(){
422     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
423 }
424
425 filter(){
426     pat=$1
427     shift
428     for v; do
429         eval "case $v in $pat) echo $v ;; esac"
430     done
431 }
432
433 filter_out(){
434     pat=$1
435     shift
436     for v; do
437         eval "case $v in $pat) ;; *) echo $v ;; esac"
438     done
439 }
440
441 map(){
442     m=$1
443     shift
444     for v; do eval $m; done
445 }
446
447 add_suffix(){
448     suffix=$1
449     shift
450     for v; do echo ${v}${suffix}; done
451 }
452
453 set_all(){
454     value=$1
455     shift
456     for var in $*; do
457         eval $var=$value
458     done
459 }
460
461 set_weak(){
462     value=$1
463     shift
464     for var; do
465         eval : \${$var:=$value}
466     done
467 }
468
469 sanitize_var_name(){
470     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
471 }
472
473 set_safe(){
474     var=$1
475     shift
476     eval $(sanitize_var_name "$var")='$*'
477 }
478
479 get_safe(){
480     eval echo \$$(sanitize_var_name "$1")
481 }
482
483 pushvar(){
484     for pvar in $*; do
485         eval level=\${${pvar}_level:=0}
486         eval ${pvar}_${level}="\$$pvar"
487         eval ${pvar}_level=$(($level+1))
488     done
489 }
490
491 popvar(){
492     for pvar in $*; do
493         eval level=\${${pvar}_level:-0}
494         test $level = 0 && continue
495         eval level=$(($level-1))
496         eval $pvar="\${${pvar}_${level}}"
497         eval ${pvar}_level=$level
498         eval unset ${pvar}_${level}
499     done
500 }
501
502 enable(){
503     set_all yes $*
504 }
505
506 disable(){
507     set_all no $*
508 }
509
510 enable_weak(){
511     set_weak yes $*
512 }
513
514 disable_weak(){
515     set_weak no $*
516 }
517
518 enable_safe(){
519     for var; do
520         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
521     done
522 }
523
524 disable_safe(){
525     for var; do
526         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
527     done
528 }
529
530 do_enable_deep(){
531     for var; do
532         enabled $var && continue
533         eval sel="\$${var}_select"
534         eval sgs="\$${var}_suggest"
535         pushvar var sgs
536         enable_deep $sel
537         popvar sgs
538         enable_deep_weak $sgs
539         popvar var
540     done
541 }
542
543 enable_deep(){
544     do_enable_deep $*
545     enable $*
546 }
547
548 enable_deep_weak(){
549     for var; do
550         disabled $var && continue
551         pushvar var
552         do_enable_deep $var
553         popvar var
554         enable_weak $var
555     done
556 }
557
558 enabled(){
559     test "${1#!}" = "$1" && op== || op=!=
560     eval test "x\$${1#!}" $op "xyes"
561 }
562
563 disabled(){
564     test "${1#!}" = "$1" && op== || op=!=
565     eval test "x\$${1#!}" $op "xno"
566 }
567
568 enabled_all(){
569     for opt; do
570         enabled $opt || return 1
571     done
572 }
573
574 disabled_all(){
575     for opt; do
576         disabled $opt || return 1
577     done
578 }
579
580 enabled_any(){
581     for opt; do
582         enabled $opt && return 0
583     done
584 }
585
586 disabled_any(){
587     for opt; do
588         disabled $opt && return 0
589     done
590     return 1
591 }
592
593 set_default(){
594     for opt; do
595         eval : \${$opt:=\$${opt}_default}
596     done
597 }
598
599 is_in(){
600     value=$1
601     shift
602     for var in $*; do
603         [ $var = $value ] && return 0
604     done
605     return 1
606 }
607
608 do_check_deps(){
609     for cfg; do
610         cfg="${cfg#!}"
611         enabled ${cfg}_checking && die "Circular dependency for $cfg."
612         disabled ${cfg}_checking && continue
613         enable ${cfg}_checking
614         append allopts $cfg
615
616         eval dep_all="\$${cfg}_deps"
617         eval dep_any="\$${cfg}_deps_any"
618         eval dep_sel="\$${cfg}_select"
619         eval dep_sgs="\$${cfg}_suggest"
620         eval dep_ifa="\$${cfg}_if"
621         eval dep_ifn="\$${cfg}_if_any"
622
623         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
624         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
625         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
626
627         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
628         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
629         enabled_all  $dep_all || disable $cfg
630         enabled_any  $dep_any || disable $cfg
631         disabled_any $dep_sel && disable $cfg
632
633         if enabled $cfg; then
634             enable_deep $dep_sel
635             enable_deep_weak $dep_sgs
636         fi
637
638         disable ${cfg}_checking
639     done
640 }
641
642 check_deps(){
643     unset allopts
644
645     do_check_deps "$@"
646
647     for cfg in $allopts; do
648         enabled $cfg || continue
649         eval dep_extralibs="\$${cfg}_extralibs"
650         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
651     done
652 }
653
654 print_config(){
655     pfx=$1
656     files=$2
657     shift 2
658     map 'eval echo "$v \${$v:-no}"' "$@" |
659     awk "BEGIN { split(\"$files\", files) }
660         {
661             c = \"$pfx\" toupper(\$1);
662             v = \$2;
663             sub(/yes/, 1, v);
664             sub(/no/,  0, v);
665             for (f in files) {
666                 file = files[f];
667                 if (file ~ /\\.h\$/) {
668                     printf(\"#define %s %d\\n\", c, v) >>file;
669                 } else if (file ~ /\\.asm\$/) {
670                     printf(\"%%define %s %d\\n\", c, v) >>file;
671                 } else if (file ~ /\\.mak\$/) {
672                     n = -v ? \"\" : \"!\";
673                     printf(\"%s%s=yes\\n\", n, c) >>file;
674                 }
675             }
676         }"
677 }
678
679 print_enabled(){
680     suf=$1
681     shift
682     for v; do
683         enabled $v && printf "%s\n" ${v%$suf}
684     done
685 }
686
687 append(){
688     var=$1
689     shift
690     eval "$var=\"\$$var $*\""
691 }
692
693 prepend(){
694     var=$1
695     shift
696     eval "$var=\"$* \$$var\""
697 }
698
699 unique(){
700     var=$1
701     uniq_list=""
702     for tok in $(eval echo \$$var); do
703         uniq_list="$(filter_out $tok $uniq_list) $tok"
704     done
705     eval "$var=\"${uniq_list}\""
706 }
707
708 add_cppflags(){
709     append CPPFLAGS "$@"
710 }
711
712 add_cflags(){
713     append CFLAGS $($cflags_filter "$@")
714 }
715
716 add_asflags(){
717     append ASFLAGS $($asflags_filter "$@")
718 }
719
720 add_objcflags(){
721     append OBJCFLAGS $($objcflags_filter "$@")
722 }
723
724 add_ldflags(){
725     append LDFLAGS $($ldflags_filter "$@")
726 }
727
728 add_ldexeflags(){
729     append LDEXEFLAGS $($ldflags_filter "$@")
730 }
731
732 add_stripflags(){
733     append STRIPFLAGS "$@"
734 }
735
736 add_extralibs(){
737     prepend extralibs $($ldflags_filter "$@")
738 }
739
740 add_host_cppflags(){
741     append host_cppflags "$@"
742 }
743
744 add_host_cflags(){
745     append host_cflags $($host_cflags_filter "$@")
746 }
747
748 add_host_ldflags(){
749     append host_ldflags $($host_ldflags_filter "$@")
750 }
751
752 add_compat(){
753     append compat_objs $1
754     shift
755     map 'add_cppflags -D$v' "$@"
756 }
757
758 check_cmd(){
759     log "$@"
760     "$@" >> $logfile 2>&1
761 }
762
763 cc_o(){
764     eval printf '%s\\n' $CC_O
765 }
766
767 cc_e(){
768     eval printf '%s\\n' $CC_E
769 }
770
771 check_cc(){
772     log check_cc "$@"
773     cat > $TMPC
774     log_file $TMPC
775     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
776 }
777
778 check_objcc(){
779     log check_objcc "$@"
780     cat > $TMPC
781     log_file $TMPC
782     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
783 }
784
785 check_cpp(){
786     log check_cpp "$@"
787     cat > $TMPC
788     log_file $TMPC
789     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
790 }
791
792 as_o(){
793     eval printf '%s\\n' $AS_O
794 }
795
796 check_as(){
797     log check_as "$@"
798     cat > $TMPS
799     log_file $TMPS
800     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
801 }
802
803 check_inline_asm(){
804     log check_inline_asm "$@"
805     name="$1"
806     code="$2"
807     shift 2
808     disable $name
809     check_cc "$@" <<EOF && enable $name
810 void foo(void){ __asm__ volatile($code); }
811 EOF
812 }
813
814 check_insn(){
815     log check_insn "$@"
816     check_inline_asm ${1}_inline "\"$2\""
817     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
818 }
819
820 check_yasm(){
821     log check_yasm "$@"
822     echo "$1" > $TMPS
823     log_file $TMPS
824     shift 1
825     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
826 }
827
828 ld_o(){
829     eval printf '%s\\n' $LD_O
830 }
831
832 check_ld(){
833     log check_ld "$@"
834     flags=$(filter_out '-l*' "$@")
835     libs=$(filter '-l*' "$@")
836     check_cc $($cflags_filter $flags) || return
837     flags=$($ldflags_filter $flags)
838     libs=$($ldflags_filter $libs)
839     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
840 }
841
842 print_include(){
843     hdr=$1
844     test "${hdr%.h}" = "${hdr}" &&
845         echo "#include $hdr"    ||
846         echo "#include <$hdr>"
847 }
848
849 check_code(){
850     log check_code "$@"
851     check=$1
852     headers=$2
853     code=$3
854     shift 3
855     {
856         for hdr in $headers; do
857             print_include $hdr
858         done
859         echo "int main(void) { $code; return 0; }"
860     } | check_$check "$@"
861 }
862
863 check_cppflags(){
864     log check_cppflags "$@"
865     check_cc "$@" <<EOF && append CPPFLAGS "$@"
866 int x;
867 EOF
868 }
869
870 test_cflags(){
871     log test_cflags "$@"
872     set -- $($cflags_filter "$@")
873     check_cc "$@" <<EOF
874 int x;
875 EOF
876 }
877
878 check_cflags(){
879     log check_cflags "$@"
880     test_cflags "$@" && add_cflags "$@"
881 }
882
883 test_objcflags(){
884     log test_cflags "$@"
885     set -- $($cflags_filter "$@")
886     check_objcc "$@" <<EOF
887 int x;
888 EOF
889 }
890
891 check_objcflags(){
892     log check_cflags "$@"
893     test_objcflags "$@" && add_objcflags "$@"
894 }
895
896 test_ldflags(){
897     log test_ldflags "$@"
898     check_ld "$@" <<EOF
899 int main(void){ return 0; }
900 EOF
901 }
902
903 check_ldflags(){
904     log check_ldflags "$@"
905     test_ldflags "$@" && add_ldflags "$@"
906 }
907
908 test_stripflags(){
909     log test_stripflags "$@"
910     # call check_cc to get a fresh TMPO
911     check_cc <<EOF
912 int main(void) { return 0; }
913 EOF
914     check_cmd $strip $STRIPFLAGS "$@" $TMPO
915 }
916
917 check_stripflags(){
918     log check_stripflags "$@"
919     test_stripflags "$@" && add_stripflags "$@"
920 }
921
922 check_header(){
923     log check_header "$@"
924     header=$1
925     shift
926     disable_safe $header
927     check_cpp "$@" <<EOF && enable_safe $header
928 #include <$header>
929 int x;
930 EOF
931 }
932
933 check_func(){
934     log check_func "$@"
935     func=$1
936     shift
937     disable $func
938     check_ld "$@" <<EOF && enable $func
939 extern int $func();
940 int main(void){ $func(); }
941 EOF
942 }
943
944 check_mathfunc(){
945     log check_mathfunc "$@"
946     func=$1
947     narg=$2
948     shift 2
949     test $narg = 2 && args="f, g" || args="f"
950     disable $func
951     check_ld "$@" <<EOF && enable $func
952 #include <math.h>
953 float foo(float f, float g) { return $func($args); }
954 int main(void){ return 0; }
955 EOF
956 }
957
958 check_func_headers(){
959     log check_func_headers "$@"
960     headers=$1
961     funcs=$2
962     shift 2
963     {
964         for hdr in $headers; do
965             print_include $hdr
966         done
967         for func in $funcs; do
968             echo "long check_$func(void) { return (long) $func; }"
969         done
970         echo "int main(void) { return 0; }"
971     } | check_ld "$@" && enable $funcs && enable_safe $headers
972 }
973
974 check_cpp_condition(){
975     log check_cpp_condition "$@"
976     header=$1
977     condition=$2
978     shift 2
979     check_cpp "$@" <<EOF
980 #include <$header>
981 #if !($condition)
982 #error "unsatisfied condition: $condition"
983 #endif
984 EOF
985 }
986
987 check_lib(){
988     log check_lib "$@"
989     header="$1"
990     func="$2"
991     shift 2
992     check_header $header && check_func $func "$@" && add_extralibs "$@"
993 }
994
995 check_lib2(){
996     log check_lib2 "$@"
997     headers="$1"
998     funcs="$2"
999     shift 2
1000     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1001 }
1002
1003 check_pkg_config(){
1004     log check_pkg_config "$@"
1005     pkg="$1"
1006     headers="$2"
1007     funcs="$3"
1008     shift 3
1009     check_cmd $pkg_config --exists --print-errors $pkg || return
1010     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1011     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1012     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1013         set_safe "${pkg}_cflags" $pkg_cflags   &&
1014         set_safe "${pkg}_libs"   $pkg_libs
1015 }
1016
1017 check_exec(){
1018     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1019 }
1020
1021 check_exec_crash(){
1022     code=$(cat)
1023
1024     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1025     # are safe but may not be available everywhere.  Thus we use
1026     # raise(SIGTERM) instead.  The check is run in a subshell so we
1027     # can redirect the "Terminated" message from the shell.  SIGBUS
1028     # is not defined by standard C so it is used conditionally.
1029
1030     (check_exec "$@") >> $logfile 2>&1 <<EOF
1031 #include <signal.h>
1032 static void sighandler(int sig){
1033     raise(SIGTERM);
1034 }
1035 int foo(void){
1036     $code
1037 }
1038 int (*func_ptr)(void) = foo;
1039 int main(void){
1040     signal(SIGILL, sighandler);
1041     signal(SIGFPE, sighandler);
1042     signal(SIGSEGV, sighandler);
1043 #ifdef SIGBUS
1044     signal(SIGBUS, sighandler);
1045 #endif
1046     return func_ptr();
1047 }
1048 EOF
1049 }
1050
1051 check_type(){
1052     log check_type "$@"
1053     headers=$1
1054     type=$2
1055     shift 2
1056     disable_safe "$type"
1057     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1058 }
1059
1060 check_struct(){
1061     log check_struct "$@"
1062     headers=$1
1063     struct=$2
1064     member=$3
1065     shift 3
1066     disable_safe "${struct}_${member}"
1067     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1068         enable_safe "${struct}_${member}"
1069 }
1070
1071 check_builtin(){
1072     log check_builtin "$@"
1073     name=$1
1074     headers=$2
1075     builtin=$3
1076     shift 3
1077     disable "$name"
1078     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1079 }
1080
1081 check_compile_assert(){
1082     log check_compile_assert "$@"
1083     name=$1
1084     headers=$2
1085     condition=$3
1086     shift 3
1087     disable "$name"
1088     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1089 }
1090
1091 require(){
1092     name="$1"
1093     header="$2"
1094     func="$3"
1095     shift 3
1096     check_lib $header $func "$@" || die "ERROR: $name not found"
1097 }
1098
1099 require2(){
1100     name="$1"
1101     headers="$2"
1102     func="$3"
1103     shift 3
1104     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1105 }
1106
1107 require_pkg_config(){
1108     pkg="$1"
1109     check_pkg_config "$@" || die "ERROR: $pkg not found"
1110     add_cflags    $(get_safe "${pkg}_cflags")
1111     add_extralibs $(get_safe "${pkg}_libs")
1112 }
1113
1114 hostcc_e(){
1115     eval printf '%s\\n' $HOSTCC_E
1116 }
1117
1118 hostcc_o(){
1119     eval printf '%s\\n' $HOSTCC_O
1120 }
1121
1122 check_host_cc(){
1123     log check_host_cc "$@"
1124     cat > $TMPC
1125     log_file $TMPC
1126     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1127 }
1128
1129 check_host_cpp(){
1130     log check_host_cpp "$@"
1131     cat > $TMPC
1132     log_file $TMPC
1133     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1134 }
1135
1136 check_host_cppflags(){
1137     log check_host_cppflags "$@"
1138     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1139 int x;
1140 EOF
1141 }
1142
1143 check_host_cflags(){
1144     log check_host_cflags "$@"
1145     set -- $($host_cflags_filter "$@")
1146     check_host_cc "$@" <<EOF && append host_cflags "$@"
1147 int x;
1148 EOF
1149 }
1150
1151 check_host_cpp_condition(){
1152     log check_host_cpp_condition "$@"
1153     header=$1
1154     condition=$2
1155     shift 2
1156     check_host_cpp "$@" <<EOF
1157 #include <$header>
1158 #if !($condition)
1159 #error "unsatisfied condition: $condition"
1160 #endif
1161 EOF
1162 }
1163
1164 apply(){
1165     file=$1
1166     shift
1167     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1168 }
1169
1170 cp_if_changed(){
1171     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1172     mkdir -p "$(dirname $2)"
1173     $cp_f "$1" "$2"
1174 }
1175
1176 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1177 # system-dependent things.
1178
1179 AVCODEC_COMPONENTS="
1180     bsfs
1181     decoders
1182     encoders
1183     hwaccels
1184     parsers
1185 "
1186
1187 AVDEVICE_COMPONENTS="
1188     indevs
1189     outdevs
1190 "
1191 AVFILTER_COMPONENTS="
1192     filters
1193 "
1194 AVFORMAT_COMPONENTS="
1195     demuxers
1196     muxers
1197     protocols
1198 "
1199
1200 AVRESAMPLE_COMPONENTS=""
1201 AVUTIL_COMPONENTS=""
1202
1203 COMPONENT_LIST="
1204     $AVCODEC_COMPONENTS
1205     $AVDEVICE_COMPONENTS
1206     $AVFILTER_COMPONENTS
1207     $AVFORMAT_COMPONENTS
1208     $AVRESAMPLE_COMPONENTS
1209     $AVUTIL_COMPONENTS
1210 "
1211
1212 EXAMPLE_LIST="
1213     avcodec_example
1214     filter_audio_example
1215     metadata_example
1216     output_example
1217     qsvdec_example
1218     transcode_aac_example
1219 "
1220
1221 HWACCEL_LIBRARY_NONFREE_LIST="
1222     cuda
1223     libnpp
1224 "
1225 HWACCEL_LIBRARY_LIST="
1226     $HWACCEL_LIBRARY_NONFREE_LIST
1227     d3d11va
1228     dxva2
1229     libmfx
1230     mmal
1231     nvenc
1232     omx
1233     vaapi
1234     vda
1235     vdpau
1236 "
1237
1238 EXTERNAL_LIBRARY_GPL_LIST="
1239     libcdio
1240     libx264
1241     libx265
1242     libxavs
1243     libxvid
1244 "
1245
1246 EXTERNAL_LIBRARY_NONFREE_LIST="
1247     libfaac
1248     libfdk_aac
1249     openssl
1250 "
1251
1252 EXTERNAL_LIBRARY_VERSION3_LIST="
1253     libopencore_amrnb
1254     libopencore_amrwb
1255     libvo_aacenc
1256     libvo_amrwbenc
1257 "
1258
1259 EXTERNAL_LIBRARY_LIST="
1260     $EXTERNAL_LIBRARY_GPL_LIST
1261     $EXTERNAL_LIBRARY_NONFREE_LIST
1262     $EXTERNAL_LIBRARY_VERSION3_LIST
1263     avisynth
1264     bzlib
1265     frei0r
1266     gnutls
1267     libbs2b
1268     libdc1394
1269     libdcadec
1270     libfontconfig
1271     libfreetype
1272     libgsm
1273     libilbc
1274     libkvazaar
1275     libmp3lame
1276     libopencv
1277     libopenh264
1278     libopenjpeg
1279     libopus
1280     libpulse
1281     librtmp
1282     libschroedinger
1283     libsnappy
1284     libspeex
1285     libtheora
1286     libtwolame
1287     libvorbis
1288     libvpx
1289     libwavpack
1290     libwebp
1291     libxcb
1292     libxcb_shm
1293     libxcb_xfixes
1294     zlib
1295 "
1296
1297 FEATURE_LIST="
1298     gray
1299     hardcoded_tables
1300     omx_rpi
1301     runtime_cpudetect
1302     safe_bitstream_reader
1303     shared
1304     small
1305     sram
1306     static
1307     swscale_alpha
1308 "
1309
1310 LIBRARY_LIST="
1311     avcodec
1312     avdevice
1313     avfilter
1314     avformat
1315     avresample
1316     avutil
1317     swscale
1318 "
1319
1320 LICENSE_LIST="
1321     gpl
1322     nonfree
1323     version3
1324 "
1325
1326 PROGRAM_LIST="
1327     avconv
1328     avplay
1329     avprobe
1330 "
1331
1332 SUBSYSTEM_LIST="
1333     dct
1334     doc
1335     error_resilience
1336     faan
1337     fft
1338     lsp
1339     lzo
1340     mdct
1341     network
1342     rdft
1343 "
1344
1345 CONFIG_LIST="
1346     $COMPONENT_LIST
1347     $EXAMPLE_LIST
1348     $EXTERNAL_LIBRARY_LIST
1349     $HWACCEL_LIBRARY_LIST
1350     $FEATURE_LIST
1351     $LICENSE_LIST
1352     $LIBRARY_LIST
1353     $PROGRAM_LIST
1354     $SUBSYSTEM_LIST
1355     memalign_hack
1356     neon_clobber_test
1357     pic
1358     pod2man
1359     texi2html
1360     thumb
1361     valgrind_backtrace
1362     xmm_clobber_test
1363 "
1364
1365 THREADS_LIST="
1366     pthreads
1367     w32threads
1368 "
1369
1370 ATOMICS_LIST="
1371     atomics_gcc
1372     atomics_suncc
1373     atomics_win32
1374 "
1375
1376 ARCH_LIST="
1377     aarch64
1378     alpha
1379     arm
1380     avr32
1381     avr32_ap
1382     avr32_uc
1383     bfin
1384     ia64
1385     m68k
1386     mips
1387     mips64
1388     parisc
1389     ppc
1390     ppc64
1391     s390
1392     sh4
1393     sparc
1394     sparc64
1395     tilegx
1396     tilepro
1397     tomi
1398     x86
1399     x86_32
1400     x86_64
1401 "
1402
1403 ARCH_EXT_LIST_ARM="
1404     armv5te
1405     armv6
1406     armv6t2
1407     armv8
1408     neon
1409     vfp
1410     vfpv3
1411 "
1412
1413 ARCH_EXT_LIST_X86_SIMD="
1414     amd3dnow
1415     amd3dnowext
1416     avx
1417     avx2
1418     fma3
1419     fma4
1420     mmx
1421     mmxext
1422     sse
1423     sse2
1424     sse3
1425     sse4
1426     sse42
1427     ssse3
1428     xop
1429 "
1430
1431 ARCH_EXT_LIST_PPC="
1432     altivec
1433     dcbzl
1434     ldbrx
1435     power8
1436     ppc4xx
1437     vsx
1438 "
1439
1440 ARCH_EXT_LIST_X86="
1441     $ARCH_EXT_LIST_X86_SIMD
1442     cpunop
1443     i686
1444 "
1445
1446 ARCH_EXT_LIST_MIPS="
1447     loongson
1448     mips32r1
1449     mips64r1
1450     mips32r2
1451     mips64r2
1452     mips32r6
1453     mips64r6
1454 "
1455
1456 ARCH_EXT_LIST="
1457     $ARCH_EXT_LIST_ARM
1458     $ARCH_EXT_LIST_MIPS
1459     $ARCH_EXT_LIST_PPC
1460     $ARCH_EXT_LIST_X86
1461     vis
1462 "
1463
1464 ARCH_FEATURES="
1465     aligned_stack
1466     fast_64bit
1467     fast_clz
1468     fast_cmov
1469     local_aligned_8
1470     local_aligned_16
1471     local_aligned_32
1472     simd_align
1473     simd_align_16
1474     simd_align_32
1475 "
1476
1477 BUILTIN_LIST="
1478     atomic_cas_ptr
1479     machine_rw_barrier
1480     MemoryBarrier
1481     mm_empty
1482     rdtsc
1483     sem_timedwait
1484     sync_val_compare_and_swap
1485 "
1486 HAVE_LIST_CMDLINE="
1487     inline_asm
1488     symver
1489     yasm
1490 "
1491
1492 HAVE_LIST_PUB="
1493     bigendian
1494     fast_unaligned
1495 "
1496
1497 HEADERS_LIST="
1498     AVFoundation_AVFoundation_h
1499     alsa_asoundlib_h
1500     altivec_h
1501     arpa_inet_h
1502     cdio_paranoia_h
1503     cdio_paranoia_paranoia_h
1504     dispatch_dispatch_h
1505     dev_bktr_ioctl_bt848_h
1506     dev_bktr_ioctl_meteor_h
1507     dev_ic_bt8xx_h
1508     dev_video_bktr_ioctl_bt848_h
1509     dev_video_meteor_ioctl_meteor_h
1510     direct_h
1511     dlfcn_h
1512     d3d11_h
1513     dxva_h
1514     gsm_h
1515     io_h
1516     mach_mach_time_h
1517     machine_ioctl_bt848_h
1518     machine_ioctl_meteor_h
1519     malloc_h
1520     poll_h
1521     sndio_h
1522     soundcard_h
1523     sys_mman_h
1524     sys_param_h
1525     sys_resource_h
1526     sys_select_h
1527     sys_soundcard_h
1528     sys_time_h
1529     sys_un_h
1530     sys_videoio_h
1531     unistd_h
1532     valgrind_valgrind_h
1533     windows_h
1534     winsock2_h
1535 "
1536
1537 INTRINSICS_LIST="
1538     intrinsics_neon
1539 "
1540
1541 MATH_FUNCS="
1542     atanf
1543     atan2f
1544     cbrtf
1545     cosf
1546     exp2
1547     exp2f
1548     expf
1549     isinf
1550     isnan
1551     ldexpf
1552     llrint
1553     llrintf
1554     log2
1555     log2f
1556     log10f
1557     lrint
1558     lrintf
1559     powf
1560     rint
1561     round
1562     roundf
1563     sinf
1564     trunc
1565     truncf
1566 "
1567
1568 SYSTEM_FUNCS="
1569     aligned_malloc
1570     clock_gettime
1571     closesocket
1572     CommandLineToArgvW
1573     CoTaskMemFree
1574     CryptGenRandom
1575     dlopen
1576     fcntl
1577     flt_lim
1578     fork
1579     getaddrinfo
1580     gethrtime
1581     getopt
1582     GetProcessAffinityMask
1583     GetProcessMemoryInfo
1584     GetProcessTimes
1585     getrusage
1586     GetSystemTimeAsFileTime
1587     gettimeofday
1588     gmtime_r
1589     inet_aton
1590     isatty
1591     jack_port_get_latency_range
1592     LoadLibrary
1593     localtime_r
1594     mach_absolute_time
1595     MapViewOfFile
1596     memalign
1597     mkstemp
1598     mmap
1599     mprotect
1600     nanosleep
1601     posix_memalign
1602     sched_getaffinity
1603     SetConsoleTextAttribute
1604     setmode
1605     setrlimit
1606     Sleep
1607     strerror_r
1608     sysconf
1609     sysctl
1610     usleep
1611     VirtualAlloc
1612 "
1613
1614 TOOLCHAIN_FEATURES="
1615     as_dn_directive
1616     as_fpu_directive
1617     as_func
1618     as_object_arch
1619     asm_mod_q
1620     attribute_may_alias
1621     attribute_packed
1622     ebp_available
1623     ebx_available
1624     gnu_as
1625     ibm_asm
1626     inline_asm_labels
1627     pragma_deprecated
1628     symver_asm_label
1629     symver_gnu_asm
1630     vfp_args
1631     xform_asm
1632     xmm_clobbers
1633 "
1634
1635 TYPES_LIST="
1636     CONDITION_VARIABLE_Ptr
1637     socklen_t
1638     struct_addrinfo
1639     struct_group_source_req
1640     struct_ip_mreq_source
1641     struct_ipv6_mreq
1642     struct_pollfd
1643     struct_rusage_ru_maxrss
1644     struct_sockaddr_in6
1645     struct_sockaddr_sa_len
1646     struct_sockaddr_storage
1647     struct_v4l2_frmivalenum_discrete
1648 "
1649
1650 HAVE_LIST="
1651     $ARCH_EXT_LIST
1652     $(add_suffix _external $ARCH_EXT_LIST)
1653     $(add_suffix _inline   $ARCH_EXT_LIST)
1654     $ARCH_FEATURES
1655     $ATOMICS_LIST
1656     $BUILTIN_LIST
1657     $HAVE_LIST_CMDLINE
1658     $HAVE_LIST_PUB
1659     $HEADERS_LIST
1660     $INTRINSICS_LIST
1661     $MATH_FUNCS
1662     $SYSTEM_FUNCS
1663     $THREADS_LIST
1664     $TOOLCHAIN_FEATURES
1665     $TYPES_LIST
1666     atomics_native
1667     dos_paths
1668     dxva2_lib
1669     libc_msvcrt
1670     libdc1394_1
1671     libdc1394_2
1672     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1673     sdl
1674     section_data_rel_ro
1675     threads
1676     vaapi_drm
1677     vaapi_x11
1678     vdpau_x11
1679     xlib
1680 "
1681
1682 # options emitted with CONFIG_ prefix but not available on the command line
1683 CONFIG_EXTRA="
1684     aandcttables
1685     ac3dsp
1686     audio_frame_queue
1687     audiodsp
1688     blockdsp
1689     bswapdsp
1690     cabac
1691     dirac_parse
1692     dvprofile
1693     faandct
1694     faanidct
1695     fdctdsp
1696     flacdsp
1697     fmtconvert
1698     g722dsp
1699     gcrypt
1700     gmp
1701     golomb
1702     gplv3
1703     h263dsp
1704     h264chroma
1705     h264dsp
1706     h264parse
1707     h264pred
1708     h264qpel
1709     hpeldsp
1710     huffman
1711     huffyuvdsp
1712     huffyuvencdsp
1713     idctdsp
1714     iirfilter
1715     imdct15
1716     intrax8
1717     iso_media
1718     ividsp
1719     jpegtables
1720     libx262
1721     lgplv3
1722     lpc
1723     lzf
1724     me_cmp
1725     mpeg_er
1726     mpegaudio
1727     mpegaudiodsp
1728     mpegvideo
1729     mpegvideoenc
1730     mss34dsp
1731     pixblockdsp
1732     qpeldsp
1733     qsv
1734     qsvdec
1735     qsvenc
1736     rangecoder
1737     riffdec
1738     riffenc
1739     rtpdec
1740     rtpenc_chain
1741     rv34dsp
1742     sinewin
1743     snappy
1744     srtp
1745     startcode
1746     texturedsp
1747     texturedspenc
1748     tpeldsp
1749     vaapi_encode
1750     vc1dsp
1751     videodsp
1752     vp3dsp
1753     vp56dsp
1754     vp8dsp
1755     wma_freqs
1756     wmv2dsp
1757 "
1758
1759 CMDLINE_SELECT="
1760     $ARCH_EXT_LIST
1761     $CONFIG_LIST
1762     $HAVE_LIST_CMDLINE
1763     $THREADS_LIST
1764     asm
1765     cross_compile
1766     debug
1767     extra_warnings
1768     logging
1769     lto
1770     optimizations
1771     rpath
1772 "
1773
1774 PATHS_LIST="
1775     bindir
1776     datadir
1777     docdir
1778     incdir
1779     libdir
1780     mandir
1781     prefix
1782     shlibdir
1783 "
1784
1785 CMDLINE_SET="
1786     $PATHS_LIST
1787     ar
1788     arch
1789     as
1790     build_suffix
1791     cc
1792     objcc
1793     cpu
1794     cross_prefix
1795     custom_allocator
1796     dep_cc
1797     env
1798     extra_version
1799     host_cc
1800     host_cflags
1801     host_ld
1802     host_ldflags
1803     host_libs
1804     host_os
1805     ld
1806     logfile
1807     malloc_prefix
1808     nm
1809     optflags
1810     pkg_config
1811     pkg_config_flags
1812     random_seed
1813     samples
1814     sysinclude
1815     sysroot
1816     target_exec
1817     target_os
1818     target_path
1819     target_samples
1820     toolchain
1821 "
1822
1823 CMDLINE_APPEND="
1824     extra_cflags
1825     extra_objcflags
1826     host_cppflags
1827 "
1828
1829 # code dependency declarations
1830
1831 # architecture extensions
1832
1833 armv5te_deps="arm"
1834 armv6_deps="arm"
1835 armv6t2_deps="arm"
1836 armv8_deps="aarch64"
1837 neon_deps_any="aarch64 arm"
1838 intrinsics_neon_deps="neon"
1839 vfp_deps_any="aarch64 arm"
1840 vfpv3_deps="vfp"
1841
1842 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1843
1844 altivec_deps="ppc"
1845 ppc4xx_deps="ppc"
1846 vsx_deps="altivec"
1847 power8_deps="vsx"
1848
1849 cpunop_deps="i686"
1850 x86_64_select="i686"
1851 x86_64_suggest="fast_cmov"
1852
1853 amd3dnow_deps="mmx"
1854 amd3dnowext_deps="amd3dnow"
1855 i686_deps="x86"
1856 mmx_deps="x86"
1857 mmxext_deps="mmx"
1858 sse_deps="mmxext"
1859 sse2_deps="sse"
1860 sse3_deps="sse2"
1861 ssse3_deps="sse3"
1862 sse4_deps="ssse3"
1863 sse42_deps="sse4"
1864 avx_deps="sse42"
1865 xop_deps="avx"
1866 fma3_deps="avx"
1867 fma4_deps="avx"
1868 avx2_deps="avx"
1869
1870 mmx_external_deps="yasm"
1871 mmx_inline_deps="inline_asm"
1872 mmx_suggest="mmx_external mmx_inline"
1873
1874 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1875     eval dep=\$${ext}_deps
1876     eval ${ext}_external_deps='"${dep}_external"'
1877     eval ${ext}_inline_deps='"${dep}_inline"'
1878     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1879 done
1880
1881 aligned_stack_if_any="aarch64 ppc x86"
1882 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1883 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1884 fast_unaligned_if_any="aarch64 ppc x86"
1885 simd_align_if_any="simd_align_16 simd_align_32"
1886 simd_align_16_if_any="altivec neon sse"
1887 simd_align_32_if_any="avx"
1888
1889 # system capabilities
1890 symver_if_any="symver_asm_label symver_gnu_asm"
1891 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1892
1893 # threading support
1894 atomics_gcc_if="sync_val_compare_and_swap"
1895 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1896 atomics_win32_if="MemoryBarrier"
1897 atomics_native_if_any="$ATOMICS_LIST"
1898 w32threads_deps="atomics_native"
1899 threads_if_any="$THREADS_LIST"
1900
1901 # subsystems
1902 dct_select="rdft"
1903 dirac_parse_select="golomb"
1904 error_resilience_select="me_cmp"
1905 faandct_deps="faan fdctdsp"
1906 faanidct_deps="faan idctdsp"
1907 h264dsp_select="startcode"
1908 intrax8_select="blockdsp idctdsp"
1909 mdct_select="fft"
1910 rdft_select="fft"
1911 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1912 mpeg_er_select="error_resilience"
1913 mpegaudio_select="mpegaudiodsp"
1914 mpegaudiodsp_select="dct"
1915 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1916 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1917 vc1dsp_select="h264chroma qpeldsp startcode"
1918
1919 # decoders / encoders
1920 aac_decoder_select="imdct15 mdct sinewin"
1921 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1922 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1923 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1924 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1925 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1926 adpcm_g722_decoder_select="g722dsp"
1927 adpcm_g722_encoder_select="g722dsp"
1928 aic_decoder_select="golomb idctdsp"
1929 alac_encoder_select="lpc"
1930 als_decoder_select="bswapdsp"
1931 amrnb_decoder_select="lsp"
1932 amrwb_decoder_select="lsp"
1933 amv_decoder_select="sp5x_decoder"
1934 ape_decoder_select="bswapdsp"
1935 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1936 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1937 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1938 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1939 atrac1_decoder_select="mdct sinewin"
1940 atrac3_decoder_select="mdct"
1941 atrac3p_decoder_select="mdct sinewin"
1942 bink_decoder_select="blockdsp hpeldsp"
1943 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1944 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1945 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1946 cllc_decoder_select="bswapdsp"
1947 comfortnoise_encoder_select="lpc"
1948 cook_decoder_select="audiodsp mdct sinewin"
1949 cscd_decoder_select="lzo"
1950 cscd_decoder_suggest="zlib"
1951 dca_decoder_select="fmtconvert mdct"
1952 dds_decoder_select="texturedsp"
1953 dnxhd_decoder_select="blockdsp idctdsp"
1954 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1955 dvvideo_decoder_select="dvprofile idctdsp"
1956 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1957 dxa_decoder_deps="zlib"
1958 dxv_decoder_select="lzf texturedsp"
1959 eac3_decoder_select="ac3_decoder"
1960 eac3_encoder_select="ac3_encoder"
1961 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1962 eatgq_decoder_select="aandcttables idctdsp"
1963 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
1964 exr_decoder_deps="zlib"
1965 ffv1_decoder_select="golomb rangecoder"
1966 ffv1_encoder_select="rangecoder"
1967 ffvhuff_decoder_select="huffyuv_decoder"
1968 ffvhuff_encoder_select="huffyuv_encoder"
1969 fic_decoder_select="golomb"
1970 flac_decoder_select="flacdsp golomb"
1971 flac_encoder_select="bswapdsp flacdsp golomb lpc"
1972 flashsv_decoder_deps="zlib"
1973 flashsv_encoder_deps="zlib"
1974 flashsv2_decoder_deps="zlib"
1975 flv_decoder_select="h263_decoder"
1976 flv_encoder_select="h263_encoder"
1977 fourxm_decoder_select="blockdsp bswapdsp"
1978 fraps_decoder_select="bswapdsp huffman"
1979 g2m_decoder_deps="zlib"
1980 g2m_decoder_select="blockdsp idctdsp jpegtables"
1981 h261_decoder_select="mpeg_er mpegvideo"
1982 h261_encoder_select="aandcttables mpegvideoenc"
1983 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1984 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1985 h263i_decoder_select="h263_decoder"
1986 h263p_encoder_select="h263_encoder"
1987 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
1988 h264_decoder_suggest="error_resilience"
1989 hap_decoder_select="snappy texturedsp"
1990 hap_encoder_deps="libsnappy"
1991 hap_encoder_select="texturedspenc"
1992 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1993 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1994 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1995 iac_decoder_select="imc_decoder"
1996 imc_decoder_select="bswapdsp fft mdct sinewin"
1997 indeo3_decoder_select="hpeldsp"
1998 indeo4_decoder_select="ividsp"
1999 indeo5_decoder_select="ividsp"
2000 interplay_video_decoder_select="hpeldsp"
2001 jpegls_decoder_select="golomb mjpeg_decoder"
2002 jpegls_encoder_select="golomb"
2003 jv_decoder_select="blockdsp"
2004 lagarith_decoder_select="huffyuvdsp"
2005 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2006 loco_decoder_select="golomb"
2007 magicyuv_decoder_select="huffyuvdsp"
2008 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2009 metasound_decoder_select="lsp mdct sinewin"
2010 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2011 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2012 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2013 mjpegb_decoder_select="mjpeg_decoder"
2014 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2015 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2016 mlp_decoder_select="mlp_parser"
2017 motionpixels_decoder_select="bswapdsp"
2018 mp1_decoder_select="mpegaudio"
2019 mp1float_decoder_select="mpegaudio"
2020 mp2_decoder_select="mpegaudio"
2021 mp2float_decoder_select="mpegaudio"
2022 mp3_decoder_select="mpegaudio"
2023 mp3adu_decoder_select="mpegaudio"
2024 mp3adufloat_decoder_select="mpegaudio"
2025 mp3float_decoder_select="mpegaudio"
2026 mp3on4_decoder_select="mpegaudio"
2027 mp3on4float_decoder_select="mpegaudio"
2028 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2029 mpc8_decoder_select="mpegaudiodsp"
2030 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2031 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2032 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2033 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2034 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2035 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2036 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2037 mpeg4_encoder_select="h263_encoder"
2038 msa1_decoder_select="mss34dsp"
2039 msmpeg4v1_decoder_select="h263_decoder"
2040 msmpeg4v2_decoder_select="h263_decoder"
2041 msmpeg4v2_encoder_select="h263_encoder"
2042 msmpeg4v3_decoder_select="h263_decoder"
2043 msmpeg4v3_encoder_select="h263_encoder"
2044 mss2_decoder_select="error_resilience mpeg_er mpegvideo vc1_decoder"
2045 mts2_decoder_select="mss34dsp"
2046 mxpeg_decoder_select="mjpeg_decoder"
2047 nellymoser_decoder_select="mdct sinewin"
2048 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2049 nuv_decoder_select="idctdsp lzo"
2050 on2avc_decoder_select="mdct"
2051 opus_decoder_deps="avresample"
2052 opus_decoder_select="imdct15"
2053 png_decoder_deps="zlib"
2054 png_encoder_deps="zlib"
2055 png_encoder_select="huffyuvencdsp"
2056 prores_decoder_select="idctdsp"
2057 prores_encoder_select="fdctdsp"
2058 qcelp_decoder_select="lsp"
2059 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2060 ra_144_encoder_select="audio_frame_queue lpc"
2061 ralf_decoder_select="golomb"
2062 rscc_decoder_deps="zlib"
2063 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2064 rv10_encoder_select="h263_encoder"
2065 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2066 rv20_encoder_select="h263_encoder"
2067 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2068 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2069 screenpresso_decoder_deps="zlib"
2070 shorten_decoder_select="golomb"
2071 sipr_decoder_select="lsp"
2072 sp5x_decoder_select="mjpeg_decoder"
2073 svq1_decoder_select="hpeldsp"
2074 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2075 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2076 svq3_decoder_suggest="zlib"
2077 tak_decoder_select="audiodsp"
2078 tdsc_decoder_deps="zlib"
2079 tdsc_decoder_select="mjpeg_decoder"
2080 theora_decoder_select="vp3_decoder"
2081 thp_decoder_select="mjpeg_decoder"
2082 tiff_decoder_suggest="zlib"
2083 tiff_encoder_suggest="zlib"
2084 truehd_decoder_select="mlp_decoder"
2085 truemotion2_decoder_select="bswapdsp"
2086 truespeech_decoder_select="bswapdsp"
2087 tscc_decoder_deps="zlib"
2088 txd_decoder_select="texturedsp"
2089 twinvq_decoder_select="mdct lsp sinewin"
2090 utvideo_decoder_select="bswapdsp"
2091 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2092 vble_decoder_select="huffyuvdsp"
2093 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2094 vc1image_decoder_select="vc1_decoder"
2095 vorbis_decoder_select="mdct"
2096 vorbis_encoder_select="mdct"
2097 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2098 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2099 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2100 vp6a_decoder_select="vp6_decoder"
2101 vp6f_decoder_select="vp6_decoder"
2102 vp7_decoder_select="h264pred videodsp vp8dsp"
2103 vp8_decoder_select="h264pred videodsp vp8dsp"
2104 vp9_decoder_select="videodsp"
2105 webp_decoder_select="vp8_decoder"
2106 wmapro_decoder_select="mdct sinewin wma_freqs"
2107 wmav1_decoder_select="mdct sinewin wma_freqs"
2108 wmav1_encoder_select="mdct sinewin wma_freqs"
2109 wmav2_decoder_select="mdct sinewin wma_freqs"
2110 wmav2_encoder_select="mdct sinewin wma_freqs"
2111 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2112 wmv1_decoder_select="h263_decoder"
2113 wmv1_encoder_select="h263_encoder"
2114 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2115 wmv2_encoder_select="h263_encoder wmv2dsp"
2116 wmv3_decoder_select="vc1_decoder"
2117 wmv3image_decoder_select="wmv3_decoder"
2118 zerocodec_decoder_deps="zlib"
2119 zlib_decoder_deps="zlib"
2120 zlib_encoder_deps="zlib"
2121 zmbv_decoder_deps="zlib"
2122 zmbv_encoder_deps="zlib"
2123
2124 # hardware accelerators
2125 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2126 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2127 vaapi_deps="va_va_h"
2128 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2129 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2130 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2131
2132 h263_vaapi_hwaccel_deps="vaapi"
2133 h263_vaapi_hwaccel_select="h263_decoder"
2134 h264_d3d11va_hwaccel_deps="d3d11va"
2135 h264_d3d11va_hwaccel_select="h264_decoder"
2136 h264_dxva2_hwaccel_deps="dxva2"
2137 h264_dxva2_hwaccel_select="h264_decoder"
2138 h264_mmal_decoder_deps="mmal"
2139 h264_mmal_decoder_select="mmal"
2140 h264_mmal_hwaccel_deps="mmal"
2141 h264_omx_encoder_deps="omx"
2142 h264_qsv_hwaccel_deps="libmfx"
2143 h264_vaapi_hwaccel_deps="vaapi"
2144 h264_vaapi_hwaccel_select="h264_decoder"
2145 h264_vda_hwaccel_deps="vda"
2146 h264_vda_hwaccel_select="h264_decoder"
2147 h264_vda_old_hwaccel_deps="vda"
2148 h264_vda_old_hwaccel_select="h264_decoder"
2149 h264_vdpau_hwaccel_deps="vdpau"
2150 h264_vdpau_hwaccel_select="h264_decoder"
2151 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2152 hevc_d3d11va_hwaccel_select="hevc_decoder"
2153 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2154 hevc_dxva2_hwaccel_select="hevc_decoder"
2155 hevc_qsv_hwaccel_deps="libmfx"
2156 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2157 hevc_vdpau_hwaccel_select="hevc_decoder"
2158 mpeg1_vdpau_hwaccel_deps="vdpau"
2159 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2160 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2161 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2162 mpeg2_dxva2_hwaccel_deps="dxva2"
2163 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2164 mpeg2_mmal_decoder_deps="mmal"
2165 mpeg2_mmal_decoder_select="mmal"
2166 mpeg2_mmal_hwaccel_deps="mmal"
2167 mpeg2_qsv_hwaccel_deps="libmfx"
2168 mpeg2_vaapi_hwaccel_deps="vaapi"
2169 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2170 mpeg2_vdpau_hwaccel_deps="vdpau"
2171 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2172 mpeg4_omx_encoder_deps="omx"
2173 mpeg4_vaapi_hwaccel_deps="vaapi"
2174 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2175 mpeg4_vdpau_hwaccel_deps="vdpau"
2176 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2177 vc1_d3d11va_hwaccel_deps="d3d11va"
2178 vc1_d3d11va_hwaccel_select="vc1_decoder"
2179 vc1_dxva2_hwaccel_deps="dxva2"
2180 vc1_dxva2_hwaccel_select="vc1_decoder"
2181 vc1_mmal_decoder_deps="mmal"
2182 vc1_mmal_decoder_select="mmal"
2183 vc1_mmal_hwaccel_deps="mmal"
2184 vc1_vaapi_hwaccel_deps="vaapi"
2185 vc1_vaapi_hwaccel_select="vc1_decoder"
2186 vc1_vdpau_hwaccel_deps="vdpau"
2187 vc1_vdpau_hwaccel_select="vc1_decoder"
2188 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2189 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2190 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2191 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2192
2193 # hardware-accelerated codecs
2194 nvenc_deps_any="dlopen LoadLibrary"
2195 nvenc_extralibs='$ldl'
2196 omx_deps="dlopen pthreads"
2197 omx_extralibs='$ldl'
2198 qsvdec_select="qsv"
2199 qsvenc_select="qsv"
2200 vaapi_encode_deps="vaapi"
2201
2202 hwupload_cuda_filter_deps="cuda"
2203 scale_npp_filter_deps="cuda libnpp"
2204
2205 h264_nvenc_encoder_deps="nvenc"
2206 h264_qsv_decoder_deps="libmfx"
2207 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2208 h264_qsv_encoder_deps="libmfx"
2209 h264_qsv_encoder_select="qsvenc"
2210 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2211 h264_vaapi_encoder_select="vaapi_encode golomb"
2212
2213 hevc_nvenc_encoder_deps="nvenc"
2214 hevc_qsv_decoder_deps="libmfx"
2215 hevc_qsv_encoder_deps="libmfx"
2216 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2217 hevc_qsv_encoder_select="qsvenc"
2218 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2219 hevc_vaapi_encoder_select="vaapi_encode golomb"
2220 mpeg2_qsv_decoder_deps="libmfx"
2221 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2222 mpeg2_qsv_encoder_deps="libmfx"
2223 mpeg2_qsv_encoder_select="qsvenc"
2224
2225 nvenc_h264_encoder_deps="nvenc"
2226 nvenc_hevc_encoder_deps="nvenc"
2227
2228 # parsers
2229 h264_parser_select="golomb h264dsp h264parse"
2230 hevc_parser_select="golomb"
2231 mpegvideo_parser_select="mpegvideo"
2232 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2233 vc1_parser_select="vc1dsp"
2234
2235 # bitstream_filters
2236 mjpeg2jpeg_bsf_select="jpegtables"
2237
2238 # external libraries
2239 libdcadec_decoder_deps="libdcadec"
2240 libfaac_encoder_deps="libfaac"
2241 libfaac_encoder_select="audio_frame_queue"
2242 libfdk_aac_decoder_deps="libfdk_aac"
2243 libfdk_aac_encoder_deps="libfdk_aac"
2244 libfdk_aac_encoder_select="audio_frame_queue"
2245 libgsm_decoder_deps="libgsm"
2246 libgsm_encoder_deps="libgsm"
2247 libgsm_ms_decoder_deps="libgsm"
2248 libgsm_ms_encoder_deps="libgsm"
2249 libilbc_decoder_deps="libilbc"
2250 libilbc_encoder_deps="libilbc"
2251 libkvazaar_encoder_deps="libkvazaar"
2252 libmp3lame_encoder_deps="libmp3lame"
2253 libmp3lame_encoder_select="audio_frame_queue"
2254 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2255 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2256 libopencore_amrnb_encoder_select="audio_frame_queue"
2257 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2258 libopenh264_decoder_deps="libopenh264"
2259 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2260 libopenh264_encoder_deps="libopenh264"
2261 libopenjpeg_decoder_deps="libopenjpeg"
2262 libopenjpeg_encoder_deps="libopenjpeg"
2263 libopus_decoder_deps="libopus"
2264 libopus_encoder_deps="libopus"
2265 libopus_encoder_select="audio_frame_queue"
2266 libschroedinger_decoder_deps="libschroedinger"
2267 libschroedinger_encoder_deps="libschroedinger"
2268 libspeex_decoder_deps="libspeex"
2269 libspeex_encoder_deps="libspeex"
2270 libspeex_encoder_select="audio_frame_queue"
2271 libtheora_encoder_deps="libtheora"
2272 libtwolame_encoder_deps="libtwolame"
2273 libvo_aacenc_encoder_deps="libvo_aacenc"
2274 libvo_aacenc_encoder_select="audio_frame_queue"
2275 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2276 libvorbis_encoder_deps="libvorbis"
2277 libvorbis_encoder_select="audio_frame_queue"
2278 libvpx_vp8_decoder_deps="libvpx"
2279 libvpx_vp8_encoder_deps="libvpx"
2280 libvpx_vp9_decoder_deps="libvpx"
2281 libvpx_vp9_encoder_deps="libvpx"
2282 libwavpack_encoder_deps="libwavpack"
2283 libwebp_encoder_deps="libwebp"
2284 libx262_encoder_deps="libx262"
2285 libx264_encoder_deps="libx264"
2286 libx265_encoder_deps="libx265"
2287 libxavs_encoder_deps="libxavs"
2288 libxvid_encoder_deps="libxvid"
2289
2290 # demuxers / muxers
2291 ac3_demuxer_select="ac3_parser"
2292 asf_demuxer_select="riffdec"
2293 asf_muxer_select="riffenc"
2294 asf_stream_muxer_select="asf_muxer"
2295 avi_demuxer_select="iso_media riffdec"
2296 avi_muxer_select="riffenc"
2297 avisynth_demuxer_deps="avisynth"
2298 avisynth_demuxer_select="riffdec"
2299 caf_demuxer_select="iso_media riffdec"
2300 dash_muxer_select="mp4_muxer"
2301 dirac_demuxer_select="dirac_parser"
2302 dv_demuxer_select="dvprofile"
2303 dv_muxer_select="dvprofile"
2304 dxa_demuxer_select="riffdec"
2305 eac3_demuxer_select="ac3_parser"
2306 f4v_muxer_select="mov_muxer"
2307 flac_demuxer_select="flac_parser"
2308 hds_muxer_select="flv_muxer"
2309 hls_muxer_select="mpegts_muxer"
2310 ipod_muxer_select="mov_muxer"
2311 ismv_muxer_select="mov_muxer"
2312 matroska_audio_muxer_select="matroska_muxer"
2313 matroska_demuxer_select="iso_media riffdec"
2314 matroska_demuxer_suggest="bzlib lzo zlib"
2315 matroska_muxer_select="iso_media riffenc"
2316 mmf_muxer_select="riffenc"
2317 mov_demuxer_select="iso_media riffdec"
2318 mov_demuxer_suggest="zlib"
2319 mov_muxer_select="iso_media riffenc rtpenc_chain"
2320 mp3_demuxer_select="mpegaudio_parser"
2321 mp4_muxer_select="mov_muxer"
2322 mpegts_demuxer_select="iso_media"
2323 mpegts_muxer_select="adts_muxer latm_muxer"
2324 mpegtsraw_demuxer_select="mpegts_demuxer"
2325 mxf_d10_muxer_select="mxf_muxer"
2326 nut_muxer_select="riffenc"
2327 nuv_demuxer_select="riffdec"
2328 oga_muxer_select="ogg_muxer"
2329 ogg_demuxer_select="dirac_parse"
2330 opus_muxer_select="ogg_muxer"
2331 psp_muxer_select="mov_muxer"
2332 rtp_demuxer_select="sdp_demuxer"
2333 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2334 rtsp_demuxer_select="http_protocol rtpdec"
2335 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2336 sap_demuxer_select="sdp_demuxer"
2337 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2338 sdp_demuxer_select="rtpdec"
2339 smoothstreaming_muxer_select="ismv_muxer"
2340 spdif_muxer_select="aac_parser"
2341 spx_muxer_select="ogg_muxer"
2342 swf_demuxer_suggest="zlib"
2343 tak_demuxer_select="tak_parser"
2344 tg2_muxer_select="mov_muxer"
2345 tgp_muxer_select="mov_muxer"
2346 w64_demuxer_select="wav_demuxer"
2347 wav_demuxer_select="riffdec"
2348 wav_muxer_select="riffenc"
2349 webm_muxer_select="iso_media riffenc"
2350 webm_muxer_suggest="libopus_encoder libvorbis_encoder libvpx_vp8_encoder libvpx_vp9_encoder"
2351 wtv_demuxer_select="mpegts_demuxer riffdec"
2352 xmv_demuxer_select="riffdec"
2353 xwma_demuxer_select="riffdec"
2354
2355 # indevs / outdevs
2356 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2357 alsa_outdev_deps="alsa_asoundlib_h"
2358 avfoundation_indev_deps="AVFoundation_AVFoundation_h"
2359 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2360 dv1394_indev_deps="dv1394"
2361 dv1394_indev_select="dv_demuxer"
2362 fbdev_indev_deps="linux_fb_h"
2363 jack_indev_deps="jack_jack_h"
2364 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2365 libcdio_indev_deps="libcdio"
2366 libdc1394_indev_deps="libdc1394"
2367 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2368 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2369 pulse_indev_deps="libpulse"
2370 sndio_indev_deps="sndio_h"
2371 sndio_outdev_deps="sndio_h"
2372 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2373 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2374 vfwcap_indev_extralibs="-lavicap32"
2375 xcbgrab_indev_deps="libxcb"
2376
2377 # protocols
2378 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2379 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2380 ffrtmpcrypt_protocol_select="tcp_protocol"
2381 ffrtmphttp_protocol_deps="!librtmp_protocol"
2382 ffrtmphttp_protocol_select="http_protocol"
2383 gopher_protocol_select="network"
2384 http_protocol_select="tcp_protocol"
2385 httpproxy_protocol_select="tcp_protocol"
2386 https_protocol_select="tls_protocol"
2387 icecast_protocol_select="http_protocol"
2388 librtmp_protocol_deps="librtmp"
2389 librtmpe_protocol_deps="librtmp"
2390 librtmps_protocol_deps="librtmp"
2391 librtmpt_protocol_deps="librtmp"
2392 librtmpte_protocol_deps="librtmp"
2393 mmsh_protocol_select="http_protocol"
2394 mmst_protocol_select="network"
2395 rtmp_protocol_deps="!librtmp_protocol"
2396 rtmp_protocol_select="tcp_protocol"
2397 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2398 rtmps_protocol_deps="!librtmp_protocol"
2399 rtmps_protocol_select="tls_protocol"
2400 rtmpt_protocol_select="ffrtmphttp_protocol"
2401 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2402 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2403 rtp_protocol_select="udp_protocol"
2404 sctp_protocol_deps="struct_sctp_event_subscribe"
2405 sctp_protocol_select="network"
2406 srtp_protocol_select="rtp_protocol srtp"
2407 tcp_protocol_select="network"
2408 tls_gnutls_protocol_deps="gnutls"
2409 tls_gnutls_protocol_select="tcp_protocol"
2410 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2411 tls_openssl_protocol_select="tcp_protocol"
2412 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2413 udp_protocol_select="network"
2414 unix_protocol_deps="sys_un_h"
2415 unix_protocol_select="network"
2416
2417 # filters
2418 blackframe_filter_deps="gpl"
2419 boxblur_filter_deps="gpl"
2420 bs2b_filter_deps="libbs2b"
2421 cropdetect_filter_deps="gpl"
2422 deinterlace_qsv_filter_deps="libmfx"
2423 delogo_filter_deps="gpl"
2424 drawtext_filter_deps="libfreetype"
2425 frei0r_filter_deps="frei0r dlopen"
2426 frei0r_filter_extralibs='$ldl'
2427 frei0r_src_filter_deps="frei0r dlopen"
2428 frei0r_src_filter_extralibs='$ldl'
2429 hqdn3d_filter_deps="gpl"
2430 interlace_filter_deps="gpl"
2431 ocv_filter_deps="libopencv"
2432 resample_filter_deps="avresample"
2433 scale_filter_deps="swscale"
2434 scale_qsv_filter_deps="libmfx"
2435 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2436
2437 # examples
2438 avcodec_example_deps="avcodec avutil"
2439 filter_audio_example_deps="avfilter avutil"
2440 metadata_example_deps="avformat avutil"
2441 output_example_deps="avcodec avformat avutil swscale"
2442 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2443 transcode_aac_example_deps="avcodec avformat avresample"
2444
2445 # libraries, in linking order
2446 avcodec_deps="avutil"
2447 avdevice_deps="avformat avcodec avutil"
2448 avfilter_deps="avutil"
2449 avformat_deps="avcodec avutil"
2450 avresample_deps="avutil"
2451 swscale_deps="avutil"
2452
2453 # programs
2454 avconv_deps="avcodec avfilter avformat avresample swscale"
2455 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2456                fps_filter null_filter resample_filter scale_filter
2457                trim_filter"
2458 avplay_deps="avcodec avfilter avformat avresample sdl"
2459 avplay_libs='$sdl_libs'
2460 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2461 avprobe_deps="avcodec avformat"
2462
2463 # documentation
2464 pod2man_deps="doc"
2465 texi2html_deps="doc"
2466
2467 # default parameters
2468
2469 logfile="config.log"
2470
2471 # installation paths
2472 prefix_default="/usr/local"
2473 bindir_default='${prefix}/bin'
2474 datadir_default='${prefix}/share/avconv'
2475 docdir_default='${prefix}/share/doc/libav'
2476 incdir_default='${prefix}/include'
2477 libdir_default='${prefix}/lib'
2478 mandir_default='${prefix}/share/man'
2479 shlibdir_default="$libdir_default"
2480
2481 # toolchain
2482 ar_default="ar"
2483 cc_default="gcc"
2484 host_cc_default="gcc"
2485 cp_f="cp -f"
2486 ln_s="ln -s -f"
2487 nm_default="nm -g"
2488 objformat="elf"
2489 pkg_config_default=pkg-config
2490 ranlib="ranlib"
2491 strip="strip"
2492 version_script='--version-script'
2493 yasmexe="yasm"
2494
2495 # machine
2496 arch_default=$(uname -m)
2497 cpu="generic"
2498 intrinsics="none"
2499
2500 # OS
2501 target_os_default=$(tolower $(uname -s))
2502 host_os=$target_os_default
2503
2504 # configurable options
2505 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2506
2507 enable asm
2508 enable debug
2509 enable doc
2510 enable faan faandct faanidct
2511 enable optimizations
2512 enable safe_bitstream_reader
2513 enable static
2514 enable swscale_alpha
2515 enable valgrind_backtrace
2516
2517 # By default, enable only those hwaccels that have no external dependencies.
2518 enable d3d11va dxva2 vda vdpau
2519
2520 # build settings
2521 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2522 LIBPREF="lib"
2523 LIBSUF=".a"
2524 FULLNAME='$(NAME)$(BUILDSUF)'
2525 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2526 SLIBPREF="lib"
2527 SLIBSUF=".so"
2528 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2529 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2530 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2531 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2532 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2533 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2534 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2535
2536 asflags_filter=echo
2537 cflags_filter=echo
2538 ldflags_filter=echo
2539
2540 AS_C='-c'
2541 AS_O='-o $@'
2542 CC_C='-c'
2543 CC_E='-E -o $@'
2544 CC_O='-o $@'
2545 OBJCC_C='-c'
2546 OBJCC_E='-E -o $@'
2547 OBJCC_O='-o $@'
2548 LD_O='-o $@'
2549 LD_LIB='-l%'
2550 LD_PATH='-L'
2551 HOSTCC_C='-c'
2552 HOSTCC_E='-E -o $@'
2553 HOSTCC_O='-o $@'
2554 HOSTLD_O='-o $@'
2555
2556 host_libs='-lm'
2557 host_cflags_filter=echo
2558 host_ldflags_filter=echo
2559
2560 target_path='$(CURDIR)'
2561
2562 # since the object filename is not given with the -MM flag, the compiler
2563 # is only able to print the basename, and we must add the path ourselves
2564 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2565 DEPFLAGS='-MM'
2566
2567 # find source path
2568 if test -f configure; then
2569     source_path=.
2570 else
2571     source_path=$(cd $(dirname "$0"); pwd)
2572     echo "$source_path" | grep -q '[[:blank:]]' &&
2573         die "Out of tree builds are impossible with whitespace in source path."
2574     test -e "$source_path/config.h" &&
2575         die "Out of tree builds are impossible with config.h in source dir."
2576 fi
2577
2578 for v in "$@"; do
2579     r=${v#*=}
2580     l=${v%"$r"}
2581     r=$(sh_quote "$r")
2582     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2583 done
2584
2585 find_things(){
2586     thing=$1
2587     pattern=$2
2588     file=$source_path/$3
2589     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2590 }
2591
2592 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2593 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2594 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2595 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2596 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2597 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2598 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2599 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2600 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2601
2602 find_things_extern(){
2603     thing=$1
2604     pattern=$2
2605     file=$source_path/$3
2606     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2607 }
2608
2609 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2610 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2611
2612 ALL_COMPONENTS="
2613     $BSF_LIST
2614     $DECODER_LIST
2615     $DEMUXER_LIST
2616     $ENCODER_LIST
2617     $FILTER_LIST
2618     $HWACCEL_LIST
2619     $INDEV_LIST
2620     $MUXER_LIST
2621     $OUTDEV_LIST
2622     $PARSER_LIST
2623     $PROTOCOL_LIST
2624 "
2625
2626 for n in $COMPONENT_LIST; do
2627     v=$(toupper ${n%s})_LIST
2628     eval enable \$$v
2629     eval ${n}_if_any="\$$v"
2630 done
2631
2632 enable $ARCH_EXT_LIST
2633
2634 die_unknown(){
2635     echo "Unknown option \"$1\"."
2636     echo "See $0 --help for available options."
2637     exit 1
2638 }
2639
2640 print_3_columns() {
2641     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2642 }
2643
2644 show_list() {
2645     suffix=_$1
2646     shift
2647     echo $* | sed s/$suffix//g | print_3_columns
2648     exit 0
2649 }
2650
2651 rand_list(){
2652     IFS=', '
2653     set -- $*
2654     unset IFS
2655     for thing; do
2656         comp=${thing%:*}
2657         prob=${thing#$comp}
2658         prob=${prob#:}
2659         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2660         echo "prob ${prob:-0.5}"
2661         printf '%s\n' $comp
2662     done
2663 }
2664
2665 do_random(){
2666     action=$1
2667     shift
2668     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2669     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2670 }
2671
2672 for opt do
2673     optval="${opt#*=}"
2674     case "$opt" in
2675         --extra-ldflags=*)
2676             add_ldflags $optval
2677         ;;
2678         --extra-ldexeflags=*)
2679             add_ldexeflags $optval
2680         ;;
2681         --extra-libs=*)
2682             add_extralibs $optval
2683         ;;
2684         --disable-devices)
2685             disable $INDEV_LIST $OUTDEV_LIST
2686         ;;
2687         --enable-debug=*)
2688             debuglevel="$optval"
2689         ;;
2690         --disable-programs)
2691             disable $PROGRAM_LIST
2692         ;;
2693         --disable-everything)
2694             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2695         ;;
2696         --disable-all)
2697             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2698             disable $LIBRARY_LIST $PROGRAM_LIST doc
2699         ;;
2700         --enable-random|--disable-random)
2701             action=${opt%%-random}
2702             do_random ${action#--} $COMPONENT_LIST
2703         ;;
2704         --enable-random=*|--disable-random=*)
2705             action=${opt%%-random=*}
2706             do_random ${action#--} $optval
2707         ;;
2708         --enable-*=*|--disable-*=*)
2709             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2710             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2711             eval list=\$$(toupper $thing)_LIST
2712             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2713             $action $(filter "$name" $list)
2714         ;;
2715         --enable-avserver|--disable-avserver*)
2716             warn "avserver has been removed, the ${opt} option is only"\
2717                  "provided for compatibility and will be removed in the future"
2718         ;;
2719         --enable-?*|--disable-?*)
2720             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2721             if is_in $option $COMPONENT_LIST; then
2722                 test $action = disable && action=unset
2723                 eval $action \$$(toupper ${option%s})_LIST
2724             elif is_in $option $CMDLINE_SELECT; then
2725                 $action $option
2726             else
2727                 die_unknown $opt
2728             fi
2729         ;;
2730         --list-*)
2731             NAME="${opt#--list-}"
2732             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2733             NAME=${NAME%s}
2734             eval show_list $NAME \$$(toupper $NAME)_LIST
2735         ;;
2736         --help|-h) show_help
2737         ;;
2738         *)
2739             optname="${opt%%=*}"
2740             optname="${optname#--}"
2741             optname=$(echo "$optname" | sed 's/-/_/g')
2742             if is_in $optname $CMDLINE_SET; then
2743                 eval $optname='$optval'
2744             elif is_in $optname $CMDLINE_APPEND; then
2745                 append $optname "$optval"
2746             else
2747                 die_unknown $opt
2748             fi
2749         ;;
2750     esac
2751 done
2752
2753 for e in $env; do
2754     eval "export $e"
2755 done
2756
2757 disabled logging && logfile=/dev/null
2758
2759 # Disable all the library-specific components if the library itself
2760 # is disabled, see AVCODEC_LIST and following _LIST variables.
2761
2762 disable_components(){
2763     disabled ${1} && disable $(
2764         eval components="\$$(toupper ${1})_COMPONENTS"
2765         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2766     )
2767 }
2768
2769 map 'disable_components $v' $LIBRARY_LIST
2770
2771 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2772 set >> $logfile
2773
2774 case "$toolchain" in
2775     *-asan)
2776         cc_default="${toolchain%-asan}"
2777         add_cflags  -fsanitize=address
2778         add_ldflags -fsanitize=address
2779     ;;
2780     *-msan)
2781         cc_default="${toolchain%-msan}"
2782         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2783         add_ldflags -fsanitize=memory
2784     ;;
2785     *-tsan)
2786         cc_default="${toolchain%-tsan}"
2787         add_cflags  -fsanitize=thread -pie
2788         add_ldflags -fsanitize=thread -pie
2789         case "$toolchain" in
2790             gcc-tsan)
2791                 add_cflags  -fPIC
2792                 add_ldflags -fPIC
2793                 ;;
2794         esac
2795     ;;
2796     *-usan)
2797         cc_default="${toolchain%-usan}"
2798         add_cflags  -fsanitize=undefined
2799         add_ldflags -fsanitize=undefined
2800         case "$toolchain" in
2801             clang-usan)
2802                 add_cflags -O1
2803                 ;;
2804         esac
2805     ;;
2806     valgrind-*)
2807         target_exec_default="valgrind"
2808         case "$toolchain" in
2809             valgrind-massif)
2810                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2811                 ;;
2812             valgrind-memcheck)
2813                 target_exec_args="--track-origins=yes --leak-check=full"
2814                 ;;
2815         esac
2816     ;;
2817     msvc)
2818         # Check whether the current MSVC version needs the C99 converter.
2819         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2820         # support enough of C99 to build libav. Default to the new
2821         # behaviour if the regexp was unable to match anything, since this
2822         # successfully parses the version number of existing supported
2823         # versions that require the converter (MSVC 2010 and 2012).
2824         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2825         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2826             cc_default="cl"
2827         else
2828             cc_default="c99wrap cl"
2829         fi
2830         ld_default="$source_path/compat/windows/mslink"
2831         nm_default="dumpbin -symbols"
2832         ar_default="lib"
2833         case "$arch" in
2834         arm*)
2835             as_default="armasm"
2836             ;;
2837         esac
2838         target_os_default="win32"
2839         # Use a relative path for TMPDIR. This makes sure all the
2840         # ffconf temp files are written with a relative path, avoiding
2841         # issues with msys/win32 path conversion for MSVC parameters
2842         # such as -Fo<file> or -out:<file>.
2843         TMPDIR=.
2844     ;;
2845     icl)
2846         cc_default="icl"
2847         ld_default="xilink"
2848         nm_default="dumpbin -symbols"
2849         ar_default="xilib"
2850         target_os_default="win32"
2851         TMPDIR=.
2852     ;;
2853     gcov)
2854         add_cflags  -fprofile-arcs -ftest-coverage
2855         add_ldflags -fprofile-arcs -ftest-coverage
2856     ;;
2857     llvm-cov)
2858         add_cflags -fprofile-arcs -ftest-coverage
2859         add_ldflags --coverage
2860     ;;
2861     hardened)
2862         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2863         add_cflags   -fno-strict-overflow -fstack-protector-all
2864         add_ldflags  -Wl,-z,relro -Wl,-z,now
2865     ;;
2866     ?*)
2867         die "Unknown toolchain $toolchain"
2868     ;;
2869 esac
2870
2871 test -n "$cross_prefix" && enable cross_compile
2872
2873 if enabled cross_compile; then
2874     test -n "$arch" && test -n "$target_os" ||
2875         die "Must specify target arch and OS when cross-compiling"
2876 fi
2877
2878 ar_default="${cross_prefix}${ar_default}"
2879 cc_default="${cross_prefix}${cc_default}"
2880 occ_default="${cross_prefix}${occ_default}"
2881 nm_default="${cross_prefix}${nm_default}"
2882 pkg_config_default="${cross_prefix}${pkg_config_default}"
2883 ranlib="${cross_prefix}${ranlib}"
2884 strip="${cross_prefix}${strip}"
2885
2886 sysinclude_default="${sysroot}/usr/include"
2887
2888 set_default arch cc pkg_config sysinclude target_exec target_os
2889 enabled cross_compile || host_cc_default=$cc
2890 set_default host_cc
2891
2892 if ! $pkg_config --version >/dev/null 2>&1; then
2893     warn "$pkg_config not found, library detection may fail."
2894     pkg_config=false
2895 fi
2896
2897 exesuf() {
2898     case $1 in
2899         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2900     esac
2901 }
2902
2903 EXESUF=$(exesuf $target_os)
2904 HOSTEXESUF=$(exesuf $host_os)
2905
2906 # set temporary file name
2907 : ${TMPDIR:=$TEMPDIR}
2908 : ${TMPDIR:=$TMP}
2909 : ${TMPDIR:=/tmp}
2910
2911 if ! check_cmd mktemp -u XXXXXX; then
2912     # simple replacement for missing mktemp
2913     # NOT SAFE FOR GENERAL USE
2914     mktemp(){
2915         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2916     }
2917 fi
2918
2919 tmpfile(){
2920     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2921         (set -C; exec > $tmp) 2>/dev/null ||
2922         die "Unable to create temporary file in $TMPDIR."
2923     append TMPFILES $tmp
2924     eval $1=$tmp
2925 }
2926
2927 trap 'rm -f -- $TMPFILES' EXIT
2928
2929 tmpfile TMPASM .asm
2930 tmpfile TMPC   .c
2931 tmpfile TMPE   $EXESUF
2932 tmpfile TMPH   .h
2933 tmpfile TMPO   .o
2934 tmpfile TMPS   .S
2935 tmpfile TMPSH  .sh
2936 tmpfile TMPV   .ver
2937
2938 unset -f mktemp
2939
2940 chmod +x $TMPE
2941
2942 # make sure we can execute files in $TMPDIR
2943 cat > $TMPSH 2>> $logfile <<EOF
2944 #! /bin/sh
2945 EOF
2946 chmod +x $TMPSH >> $logfile 2>&1
2947 if ! $TMPSH >> $logfile 2>&1; then
2948     cat <<EOF
2949 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2950 variable to another directory and make sure that it is not mounted noexec.
2951 EOF
2952     die "Sanity test failed."
2953 fi
2954
2955 armasm_flags(){
2956     for flag; do
2957         case $flag in
2958             # Filter out MSVC cl.exe options from cflags that shouldn't
2959             # be passed to gas-preprocessor
2960             -M[TD]*)                                            ;;
2961             *)                  echo $flag                      ;;
2962         esac
2963    done
2964 }
2965
2966 ccc_flags(){
2967     for flag; do
2968         case $flag in
2969             -std=c99)           echo -c99                       ;;
2970             -mcpu=*)            echo -arch ${flag#*=}           ;;
2971             -mieee)             echo -ieee                      ;;
2972             -O*|-fast)          echo $flag                      ;;
2973             -fno-math-errno)    echo -assume nomath_errno       ;;
2974             -g)                 echo -g3                        ;;
2975             -Wall)              echo -msg_enable level2         ;;
2976             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2977             -Wl,*)              echo $flag                      ;;
2978             -f*|-W*)                                            ;;
2979             *)                  echo $flag                      ;;
2980         esac
2981    done
2982 }
2983
2984 cparser_flags(){
2985     for flag; do
2986         case $flag in
2987             -Wno-switch)             echo -Wno-switch-enum ;;
2988             -Wno-format-zero-length) ;;
2989             -Wdisabled-optimization) ;;
2990             -Wno-pointer-sign)       echo -Wno-other ;;
2991             *)                       echo $flag ;;
2992         esac
2993     done
2994 }
2995
2996 msvc_common_flags(){
2997     for flag; do
2998         case $flag in
2999             # In addition to specifying certain flags under the compiler
3000             # specific filters, they must be specified here as well or else the
3001             # generic catch all at the bottom will print the original flag.
3002             -Wall)                ;;
3003             -std=c99)             ;;
3004             # Common flags
3005             -fomit-frame-pointer) ;;
3006             -g)                   echo -Z7 ;;
3007             -fno-math-errno)      ;;
3008             -fno-common)          ;;
3009             -fno-signed-zeros)    ;;
3010             -fPIC)                ;;
3011             -mthumb)              ;;
3012             -march=*)             ;;
3013             -lz)                  echo zlib.lib ;;
3014             -lavifil32)           echo vfw32.lib ;;
3015             -lavicap32)           echo vfw32.lib user32.lib ;;
3016             -lx264)               echo libx264.lib ;;
3017             -l*)                  echo ${flag#-l}.lib ;;
3018             -L*)                  echo -libpath:${flag#-L} ;;
3019             *)                    echo $flag ;;
3020         esac
3021     done
3022 }
3023
3024 msvc_flags(){
3025     msvc_common_flags "$@"
3026     for flag; do
3027         case $flag in
3028             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3029                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3030                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3031                                        -wd4273 -wd4554 -wd4701 ;;
3032         esac
3033     done
3034 }
3035
3036 icl_flags(){
3037     msvc_common_flags "$@"
3038     for flag; do
3039         case $flag in
3040             # Despite what Intel's documentation says -Wall, which is supported
3041             # on Windows, does enable remarks so disable them here.
3042             -Wall)                echo $flag -Qdiag-disable:remark ;;
3043             -std=c99)             echo -Qstd=c99 ;;
3044         esac
3045     done
3046 }
3047
3048 pgi_flags(){
3049     for flag; do
3050         case $flag in
3051             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3052             -fomit-frame-pointer) echo -Mnoframe ;;
3053             -g)                   echo -gopt ;;
3054             *)                    echo $flag ;;
3055         esac
3056     done
3057 }
3058
3059 suncc_flags(){
3060     for flag; do
3061         case $flag in
3062             -march=*|-mcpu=*)
3063                 case "${flag#*=}" in
3064                     native)                   echo -xtarget=native       ;;
3065                     v9|niagara)               echo -xarch=sparc          ;;
3066                     ultrasparc)               echo -xarch=sparcvis       ;;
3067                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3068                     i586|pentium)             echo -xchip=pentium        ;;
3069                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3070                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3071                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3072                     pentium4*)          echo -xtarget=pentium4           ;;
3073                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3074                     *-sse3)             echo -xarch=sse3                 ;;
3075                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3076                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3077                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3078                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3079                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3080                     k8|opteron|athlon64|athlon-fx)
3081                                                echo -xarch=sse2a         ;;
3082                     athlon*)                   echo -xarch=pentium_proa  ;;
3083                 esac
3084                 ;;
3085             -std=c99)             echo -xc99              ;;
3086             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3087             -fPIC)                echo -KPIC -xcode=pic32 ;;
3088             -W*,*)                echo $flag              ;;
3089             -f*-*|-W*|-mimpure-text)                      ;;
3090             -shared)              echo -G                 ;;
3091             *)                    echo $flag              ;;
3092         esac
3093     done
3094 }
3095
3096 tms470_flags(){
3097     for flag; do
3098         case $flag in
3099             -march=*|-mcpu=*)
3100                 case "${flag#*=}" in
3101                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3102                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3103                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3104                     armv6*|arm11*)          echo -mv=6   ;;
3105                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3106                                             echo -mv=5e  ;;
3107                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3108                 esac
3109                 ;;
3110             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3111             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3112             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3113             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3114             -msoft-float)   echo --float_support=vfplib       ;;
3115             -O[0-3]|-mf=*)  echo $flag                        ;;
3116             -g)             echo -g -mn                       ;;
3117             -pds=*)         echo $flag                        ;;
3118             -D*|-I*)        echo $flag                        ;;
3119             --gcc|--abi=*)  echo $flag                        ;;
3120             -me)            echo $flag                        ;;
3121         esac
3122     done
3123 }
3124
3125 probe_cc(){
3126     pfx=$1
3127     _cc=$2
3128
3129     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3130     unset _ld_o _ldflags _ld_lib _ld_path
3131     unset _depflags _DEPCMD _DEPFLAGS
3132     _flags_filter=echo
3133
3134     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3135         _type=llvm_gcc
3136         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3137         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3138         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3139         _cflags_speed='-O3'
3140         _cflags_size='-Os'
3141     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3142         _type=gcc
3143         gcc_version=$($_cc --version | head -n1)
3144         gcc_basever=$($_cc -dumpversion)
3145         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3146         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3147         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3148         if ! $_cc -dumpversion | grep -q '^2\.'; then
3149             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3150         fi
3151         _cflags_speed='-O3'
3152         _cflags_size='-Os'
3153     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3154         _type=icc
3155         _ident=$($_cc --version | head -n1)
3156         _depflags='-MMD'
3157         _cflags_speed='-O3'
3158         _cflags_size='-Os'
3159         _cflags_noopt='-O1'
3160     elif $_cc -v 2>&1 | grep -q xlc; then
3161         _type=xlc
3162         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3163         _cflags_speed='-O5'
3164         _cflags_size='-O5 -qcompact'
3165     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3166         _type=ccc
3167         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3168         _DEPFLAGS='-M'
3169         _cflags_speed='-fast'
3170         _cflags_size='-O1'
3171         _flags_filter=ccc_flags
3172     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3173         test -d "$sysroot" || die "No valid sysroot specified."
3174         _type=armcc
3175         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3176         armcc_conf="$PWD/armcc.conf"
3177         $_cc --arm_linux_configure                 \
3178              --arm_linux_config_file="$armcc_conf" \
3179              --configure_sysroot="$sysroot"        \
3180              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3181              die "Error creating armcc configuration file."
3182         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3183         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3184         as_default="${cross_prefix}gcc"
3185         _depflags='-MMD'
3186         _cflags_speed='-O3'
3187         _cflags_size='-Os'
3188     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3189         _type=tms470
3190         _ident=$($_cc -version | head -n1 | tr -s ' ')
3191         _flags='--gcc --abi=eabi -me'
3192         _cc_e='-ppl -fe=$@'
3193         _cc_o='-fe=$@'
3194         _depflags='-ppa -ppd=$(@:.o=.d)'
3195         _cflags_speed='-O3 -mf=5'
3196         _cflags_size='-O3 -mf=2'
3197         _flags_filter=tms470_flags
3198     elif $_cc -v 2>&1 | grep -q clang; then
3199         _type=clang
3200         _ident=$($_cc --version 2>/dev/null | head -n1)
3201         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3202         _cflags_speed='-O3'
3203         _cflags_size='-Os'
3204     elif $_cc -V 2>&1 | grep -q Sun; then
3205         _type=suncc
3206         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3207         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3208         _DEPFLAGS='-xM1 -xc99'
3209         _ldflags='-std=c99'
3210         _cflags_speed='-O5'
3211         _cflags_size='-O5 -xspace'
3212         _flags_filter=suncc_flags
3213     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3214         _type=pathscale
3215         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3216         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3217         _cflags_speed='-O2'
3218         _cflags_size='-Os'
3219         _flags_filter='filter_out -Wdisabled-optimization'
3220     elif $_cc -v 2>&1 | grep -q Open64; then
3221         _type=open64
3222         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3223         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3224         _cflags_speed='-O2'
3225         _cflags_size='-Os'
3226         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3227     elif $_cc -V 2>&1 | grep -q Portland; then
3228         _type=pgi
3229         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3230         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3231         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3232         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3233         _cflags_noopt="-O1"
3234         _flags_filter=pgi_flags
3235     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3236         _type=armasm
3237         _ident=$($_cc | head -n1)
3238         # 4509: "This form of conditional instruction is deprecated"
3239         _flags="-nologo -ignore 4509"
3240         _flags_filter=armasm_flags
3241     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3242         _type=msvc
3243         _ident=$($_cc 2>&1 | head -n1)
3244         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3245         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3246         _cflags_speed="-O2"
3247         _cflags_size="-O1"
3248         if $_cc -nologo- 2>&1 | grep -q Linker; then
3249             _ld_o='-out:$@'
3250         else
3251             _ld_o='-Fe$@'
3252         fi
3253         _cc_o='-Fo$@'
3254         _cc_e='-P -Fi$@'
3255         _flags_filter=msvc_flags
3256         _ld_lib='lib%.a'
3257         _ld_path='-libpath:'
3258         _flags='-nologo'
3259     elif $_cc 2>&1 | grep -q Intel; then
3260         _type=icl
3261         _ident=$($_cc 2>&1 | head -n1)
3262         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3263         # Not only is O3 broken on 13.x+ but it is slower on all previous
3264         # versions (tested) as well.
3265         _cflags_speed="-O2"
3266         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3267         if $_cc 2>&1 | grep -q Linker; then
3268             _ld_o='-out:$@'
3269         else
3270             _ld_o='-Fe$@'
3271         fi
3272         _cc_o='-Fo$@'
3273         _cc_e='-P'
3274         _flags_filter=icl_flags
3275         _ld_lib='lib%.a'
3276         _ld_path='-libpath:'
3277         # -Qdiag-error to make icl error when seeing certain unknown arguments
3278         _flags='-nologo -Qdiag-error:4044,10157'
3279         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3280         # with MSVC which enables it by default.
3281         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3282     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3283         # lld can emulate multiple different linkers; in ms link.exe mode,
3284         # the -? parameter gives the help output which contains an identifyable
3285         # string, while it gives an error in other modes.
3286         _type=lld-link
3287         # The link.exe mode doesn't have a switch for getting the version,
3288         # but we can force it back to gnu mode and get the version from there.
3289         _ident=$($_cc -flavor gnu --version)
3290         _ld_o='-out:$@'
3291         _flags_filter=msvc_flags
3292         _ld_lib='lib%.a'
3293         _ld_path='-libpath:'
3294     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3295         _type=cparser
3296         _ident=$($_cc --version | head -n1)
3297         _depflags='-MMD'
3298         _cflags_speed='-O4'
3299         _cflags_size='-O2'
3300         _flags_filter=cparser_flags
3301     fi
3302
3303     eval ${pfx}_type=\$_type
3304     eval ${pfx}_ident=\$_ident
3305 }
3306
3307 set_ccvars(){
3308     eval ${1}_C=\${_cc_c-\${${1}_C}}
3309     eval ${1}_E=\${_cc_e-\${${1}_E}}
3310     eval ${1}_O=\${_cc_o-\${${1}_O}}
3311
3312     if [ -n "$_depflags" ]; then
3313         eval ${1}_DEPFLAGS=\$_depflags
3314     else
3315         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3316         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3317         eval DEP${1}FLAGS=\$_flags
3318     fi
3319 }
3320
3321 probe_cc cc "$cc"
3322 cflags_filter=$_flags_filter
3323 cflags_speed=$_cflags_speed
3324 cflags_size=$_cflags_size
3325 cflags_noopt=$_cflags_noopt
3326 add_cflags $_flags $_cflags
3327 cc_ldflags=$_ldflags
3328 set_ccvars CC
3329
3330 probe_cc hostcc "$host_cc"
3331 host_cflags_filter=$_flags_filter
3332 add_host_cflags  $_flags $_cflags
3333 set_ccvars HOSTCC
3334
3335 test -n "$cc_type" && enable $cc_type ||
3336     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3337
3338 : ${as_default:=$cc}
3339 : ${objcc_default:=$cc}
3340 : ${dep_cc_default:=$cc}
3341 : ${ld_default:=$cc}
3342 : ${host_ld_default:=$host_cc}
3343 set_default ar as objcc dep_cc ld host_ld
3344
3345 probe_cc as "$as"
3346 asflags_filter=$_flags_filter
3347 add_asflags $_flags $_cflags
3348 set_ccvars AS
3349
3350 probe_cc objcc "$objcc"
3351 objcflags_filter=$_flags_filter
3352 add_objcflags $_flags $_cflags
3353 set_ccvars OBJC
3354
3355 probe_cc ld "$ld"
3356 ldflags_filter=$_flags_filter
3357 add_ldflags $_flags $_ldflags
3358 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3359 LD_O=${_ld_o-$LD_O}
3360 LD_LIB=${_ld_lib-$LD_LIB}
3361 LD_PATH=${_ld_path-$LD_PATH}
3362
3363 probe_cc hostld "$host_ld"
3364 host_ldflags_filter=$_flags_filter
3365 add_host_ldflags $_flags $_ldflags
3366 HOSTLD_O=${_ld_o-$HOSTLD_O}
3367
3368 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3369     probe_cc depcc "$dep_cc"
3370     CCDEP=${_DEPCMD:-$DEPCMD}
3371     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3372     DEPCCFLAGS=$_flags
3373 fi
3374
3375 if $ar 2>&1 | grep -q Microsoft; then
3376     arflags="-nologo"
3377     ar_o='-out:$@'
3378 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3379     arflags="rq"
3380     ar_o='$@'
3381 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3382     arflags='-Xany -r -c'
3383     ar_o='$@'
3384 else
3385     arflags="rc"
3386     ar_o='$@'
3387 fi
3388
3389 add_cflags $extra_cflags
3390 add_objcflags $extra_objcflags
3391 add_asflags $extra_cflags
3392
3393 if test -n "$sysroot"; then
3394     case "$cc_type" in
3395         gcc|llvm_gcc|clang)
3396             add_cppflags --sysroot="$sysroot"
3397             add_ldflags --sysroot="$sysroot"
3398         ;;
3399         tms470)
3400             add_cppflags -I"$sysinclude"
3401             add_ldflags  --sysroot="$sysroot"
3402         ;;
3403     esac
3404 fi
3405
3406 if test "$cpu" = host; then
3407     enabled cross_compile &&
3408         die "--cpu=host makes no sense when cross-compiling."
3409
3410     case "$cc_type" in
3411         gcc|llvm_gcc)
3412             check_native(){
3413                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3414                 sed -n "/cc1.*$1=/{
3415                             s/.*$1=\\([^ ]*\\).*/\\1/
3416                             p
3417                             q
3418                         }" $TMPE
3419             }
3420             cpu=$(check_native -march || check_native -mcpu)
3421         ;;
3422     esac
3423
3424     test "${cpu:-host}" = host &&
3425         die "--cpu=host not supported with compiler $cc"
3426 fi
3427
3428 # Deal with common $arch aliases
3429 case "$arch" in
3430     aarch64|arm64)
3431         arch="aarch64"
3432     ;;
3433     arm*)
3434         arch="arm"
3435     ;;
3436     mips*|IP*)
3437         case "$arch" in
3438         *el)
3439             add_cppflags -EL
3440             add_ldflags -EL
3441         ;;
3442         *eb)
3443             add_cppflags -EB
3444             add_ldflags -EB
3445         ;;
3446         esac
3447         arch="mips"
3448     ;;
3449     parisc*|hppa*)
3450         arch="parisc"
3451     ;;
3452     "Power Macintosh"|ppc*|powerpc*)
3453         arch="ppc"
3454     ;;
3455     s390|s390x)
3456         arch="s390"
3457     ;;
3458     sh4|sh)
3459         arch="sh4"
3460     ;;
3461     sun4u|sparc*)
3462         arch="sparc"
3463     ;;
3464     tilegx|tile-gx)
3465         arch="tilegx"
3466     ;;
3467     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3468         arch="x86"
3469     ;;
3470 esac
3471
3472 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3473 enable $arch
3474
3475 # Add processor-specific flags
3476 if enabled aarch64; then
3477
3478     case $cpu in
3479         armv*)
3480             cpuflags="-march=$cpu"
3481         ;;
3482         *)
3483             cpuflags="-mcpu=$cpu"
3484         ;;
3485     esac
3486
3487 elif enabled alpha; then
3488
3489     cpuflags="-mcpu=$cpu"
3490
3491 elif enabled arm; then
3492
3493     check_arm_arch() {
3494         check_cpp_condition stddef.h \
3495             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3496             $cpuflags
3497     }
3498
3499     probe_arm_arch() {
3500         if   check_arm_arch 4;        then echo armv4
3501         elif check_arm_arch 4T;       then echo armv4t
3502         elif check_arm_arch 5;        then echo armv5
3503         elif check_arm_arch 5E;       then echo armv5e
3504         elif check_arm_arch 5T;       then echo armv5t
3505         elif check_arm_arch 5TE;      then echo armv5te
3506         elif check_arm_arch 5TEJ;     then echo armv5te
3507         elif check_arm_arch 6;        then echo armv6
3508         elif check_arm_arch 6J;       then echo armv6j
3509         elif check_arm_arch 6K;       then echo armv6k
3510         elif check_arm_arch 6Z;       then echo armv6z
3511         elif check_arm_arch 6ZK;      then echo armv6zk
3512         elif check_arm_arch 6T2;      then echo armv6t2
3513         elif check_arm_arch 7;        then echo armv7
3514         elif check_arm_arch 7A  7_A;  then echo armv7-a
3515         elif check_arm_arch 7S;       then echo armv7-a
3516         elif check_arm_arch 7R  7_R;  then echo armv7-r
3517         elif check_arm_arch 7M  7_M;  then echo armv7-m
3518         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3519         elif check_arm_arch 8A  8_A;  then echo armv8-a
3520         fi
3521     }
3522
3523     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3524
3525     case $cpu in
3526         armv*)
3527             cpuflags="-march=$cpu"
3528             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3529         ;;
3530         *)
3531             cpuflags="-mcpu=$cpu"
3532             case $cpu in
3533                 cortex-a*)                               subarch=armv7a  ;;
3534                 cortex-r*)                               subarch=armv7r  ;;
3535                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3536                 arm11*)                                  subarch=armv6   ;;
3537                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3538                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3539                 *)                             subarch=$(probe_arm_arch) ;;
3540             esac
3541         ;;
3542     esac
3543
3544     case "$subarch" in
3545         armv5t*)    enable fast_clz                ;;
3546         armv[6-8]*) enable fast_clz fast_unaligned ;;
3547     esac
3548
3549 elif enabled avr32; then
3550
3551     case $cpu in
3552         ap7[02]0[0-2])
3553             subarch="avr32_ap"
3554             cpuflags="-mpart=$cpu"
3555         ;;
3556         ap)
3557             subarch="avr32_ap"
3558             cpuflags="-march=$cpu"
3559         ;;
3560         uc3[ab]*)
3561             subarch="avr32_uc"
3562             cpuflags="-mcpu=$cpu"
3563         ;;
3564         uc)
3565             subarch="avr32_uc"
3566             cpuflags="-march=$cpu"
3567         ;;
3568     esac
3569
3570 elif enabled bfin; then
3571
3572     cpuflags="-mcpu=$cpu"
3573
3574 elif enabled mips; then
3575
3576     cpuflags="-march=$cpu"
3577
3578 elif enabled ppc; then
3579
3580     disable ldbrx
3581
3582     case $(tolower $cpu) in
3583         601|ppc601|powerpc601)
3584             cpuflags="-mcpu=601"
3585             disable altivec
3586         ;;
3587         603*|ppc603*|powerpc603*)
3588             cpuflags="-mcpu=603"
3589             disable altivec
3590         ;;
3591         604*|ppc604*|powerpc604*)
3592             cpuflags="-mcpu=604"
3593             disable altivec
3594         ;;
3595         g3|75*|ppc75*|powerpc75*)
3596             cpuflags="-mcpu=750"
3597             disable altivec
3598         ;;
3599         g4|745*|ppc745*|powerpc745*)
3600             cpuflags="-mcpu=7450"
3601             disable vsx
3602         ;;
3603         74*|ppc74*|powerpc74*)
3604             cpuflags="-mcpu=7400"
3605             disable vsx
3606         ;;
3607         g5|970|ppc970|powerpc970)
3608             cpuflags="-mcpu=970"
3609             disable vsx
3610         ;;
3611         power[3-6]*)
3612             cpuflags="-mcpu=$cpu"
3613             disable vsx
3614         ;;
3615         power[7-8]*)
3616             cpuflags="-mcpu=$cpu"
3617             enable ldbrx
3618         ;;
3619         cell)
3620             cpuflags="-mcpu=cell"
3621             enable ldbrx
3622             disable vsx
3623         ;;
3624         e500mc)
3625             cpuflags="-mcpu=e500mc"
3626             disable altivec
3627         ;;
3628         e500v2)
3629             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3630             disable altivec
3631             disable dcbzl
3632         ;;
3633         e500)
3634             cpuflags="-mcpu=8540 -mhard-float"
3635             disable altivec
3636             disable dcbzl
3637         ;;
3638     esac
3639
3640 elif enabled sparc; then
3641
3642     case $cpu in
3643         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3644             cpuflags="-mcpu=$cpu"
3645         ;;
3646         ultrasparc*|niagara[234])
3647             cpuflags="-mcpu=$cpu"
3648         ;;
3649     esac
3650
3651 elif enabled x86; then
3652
3653     case $cpu in
3654         i[345]86|pentium)
3655             cpuflags="-march=$cpu"
3656             disable i686
3657             disable mmx
3658         ;;
3659         # targets that do NOT support nopl and conditional mov (cmov)
3660         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3661             cpuflags="-march=$cpu"
3662             disable i686
3663         ;;
3664         # targets that do support nopl and conditional mov (cmov)
3665         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3666             cpuflags="-march=$cpu"
3667             enable i686
3668             enable fast_cmov
3669         ;;
3670         # targets that do support conditional mov but on which it's slow
3671         pentium4|pentium4m|prescott|nocona)
3672             cpuflags="-march=$cpu"
3673             enable i686
3674             disable fast_cmov
3675         ;;
3676     esac
3677
3678 fi
3679
3680 if [ "$cpu" != generic ]; then
3681     add_cflags  $cpuflags
3682     add_asflags $cpuflags
3683     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3684 fi
3685
3686 # compiler sanity check
3687 check_exec <<EOF
3688 int main(void){ return 0; }
3689 EOF
3690 if test "$?" != 0; then
3691     echo "$cc is unable to create an executable file."
3692     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3693         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3694         echo "Only do this if you know what cross compiling means."
3695     fi
3696     die "C compiler test failed."
3697 fi
3698
3699 add_cppflags -D_ISOC99_SOURCE
3700 check_cflags -std=c99
3701 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3702 #include <stdlib.h>
3703 EOF
3704 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3705 #include <stdlib.h>
3706 EOF
3707
3708 add_host_cppflags -D_ISOC99_SOURCE
3709 check_host_cflags -std=c99
3710 check_host_cflags -Wall
3711 check_host_cflags -O3
3712
3713 check_64bit(){
3714     arch32=$1
3715     arch64=$2
3716     expr=$3
3717     check_code cc "" "int test[2*($expr) - 1]" &&
3718         subarch=$arch64 || subarch=$arch32
3719 }
3720
3721 case "$arch" in
3722     aarch64|alpha|ia64)
3723         spic=$shared
3724     ;;
3725     mips)
3726         check_64bit mips mips64 '_MIPS_SIM > 1'
3727         spic=$shared
3728     ;;
3729     parisc)
3730         check_64bit parisc parisc64 'sizeof(void *) > 4'
3731         spic=$shared
3732     ;;
3733     ppc)
3734         check_64bit ppc ppc64 'sizeof(void *) > 4'
3735         spic=$shared
3736     ;;
3737     s390)
3738         check_64bit s390 s390x 'sizeof(void *) > 4'
3739         spic=$shared
3740     ;;
3741     sparc)
3742         check_64bit sparc sparc64 'sizeof(void *) > 4'
3743         spic=$shared
3744     ;;
3745     x86)
3746         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3747         if test "$subarch" = "x86_64"; then
3748             spic=$shared
3749         fi
3750     ;;
3751 esac
3752
3753 enable $subarch
3754 enabled spic && enable_weak pic
3755
3756 # OS specific
3757 case $target_os in
3758     aix)
3759         SHFLAGS=-shared
3760         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3761         enabled shared && add_ldflags -Wl,-brtl
3762         ;;
3763     android)
3764         disable symver
3765         enable section_data_rel_ro
3766         SLIB_INSTALL_NAME='$(SLIBNAME)'
3767         SLIB_INSTALL_LINKS=
3768         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3769         ;;
3770     haiku)
3771         prefix_default="/boot/common"
3772         network_extralibs="-lnetwork"
3773         host_libs=
3774         ;;
3775     sunos)
3776         SHFLAGS='-shared -Wl,-h,$$(@F)'
3777         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3778         network_extralibs="-lsocket -lnsl"
3779         # When using suncc to build, the Solaris linker will mark
3780         # an executable with each instruction set encountered by
3781         # the Solaris assembler.  As our libraries contain their own
3782         # guards for processor-specific code, instead suppress
3783         # generation of the HWCAPS ELF section on Solaris x86 only.
3784         enabled_all suncc x86 &&
3785             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3786             add_ldflags -Wl,-M,mapfile
3787         nm_default='nm -P -g'
3788         version_script='-M'
3789         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3790         ;;
3791     netbsd)
3792         disable symver
3793         oss_indev_extralibs="-lossaudio"
3794         oss_outdev_extralibs="-lossaudio"
3795         ;;
3796     openbsd|bitrig)
3797         disable symver
3798         SHFLAGS='-shared'
3799         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3800         SLIB_INSTALL_LINKS=
3801         oss_indev_extralibs="-lossaudio"
3802         oss_outdev_extralibs="-lossaudio"
3803         ;;
3804     dragonfly)
3805         disable symver
3806         ;;
3807     freebsd)
3808         ;;
3809     bsd/os)
3810         add_extralibs -lpoll -lgnugetopt
3811         ;;
3812     darwin)
3813         enabled ppc && add_asflags -force_cpusubtype_ALL
3814         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3815         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3816         add_ldflags -Wl,-dynamic,-search_paths_first
3817         SLIBSUF=".dylib"
3818         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3819         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3820         objformat="macho"
3821         enabled x86_64 && objformat="macho64"
3822         enabled_any pic shared ||
3823             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3824         check_header dispatch/dispatch.h &&
3825             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3826         ;;
3827     msys*)
3828         die "Native MSYS builds are discouraged, please use the MINGW environment."
3829         ;;
3830     mingw32*|mingw64*)
3831         if test $target_os = "mingw32ce"; then
3832             disable network
3833         else
3834             target_os=mingw32
3835         fi
3836         LIBTARGET=i386
3837         if enabled x86_64; then
3838             LIBTARGET="i386:x86-64"
3839         elif enabled arm; then
3840             LIBTARGET=arm-wince
3841         fi
3842         check_ldflags -Wl,--nxcompat
3843         check_ldflags -Wl,--dynamicbase
3844         shlibdir_default="$bindir_default"
3845         SLIBPREF=""
3846         SLIBSUF=".dll"
3847         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3848         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3849         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3850         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3851         SLIB_INSTALL_LINKS=
3852         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3853         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3854         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3855         objformat="win32"
3856         dlltool="${cross_prefix}dlltool"
3857         ranlib=:
3858         enable dos_paths
3859         ;;
3860     win32|win64)
3861         disable symver
3862         if enabled shared; then
3863             # Link to the import library instead of the normal static library
3864             # for shared libs.
3865             LD_LIB='%.lib'
3866             # Cannot build both shared and static libs with MSVC or icl.
3867             disable static
3868         fi
3869         shlibdir_default="$bindir_default"
3870         SLIBPREF=""
3871         SLIBSUF=".dll"
3872         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3873         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3874         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3875         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3876         SLIB_INSTALL_LINKS=
3877         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3878         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3879         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3880         objformat="win32"
3881         ranlib=:
3882         enable dos_paths
3883         ;;
3884     cygwin*)
3885         target_os=cygwin
3886         shlibdir_default="$bindir_default"
3887         SLIBPREF="cyg"
3888         SLIBSUF=".dll"
3889         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3890         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3891         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3892         SLIB_INSTALL_LINKS=
3893         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3894         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3895         objformat="win32"
3896         enable dos_paths
3897         ;;
3898     *-dos|freedos|opendos)
3899         network_extralibs="-lsocket"
3900         objformat="coff"
3901         enable dos_paths
3902         add_cppflags -U__STRICT_ANSI__
3903         ;;
3904     linux)
3905         enable dv1394
3906         enable section_data_rel_ro
3907         ;;
3908     irix*)
3909         target_os=irix
3910         ranlib="echo ignoring ranlib"
3911         ;;
3912     os/2*)
3913         ln_s="cp -f"
3914         objformat="aout"
3915         add_cppflags -D_GNU_SOURCE
3916         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3917         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3918         LIBSUF="_s.a"
3919         SLIBPREF=""
3920         SLIBSUF=".dll"
3921         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3922         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3923         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3924             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3925             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3926             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3927             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3928         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3929             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3930         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3931         enable dos_paths
3932         ;;
3933     gnu/kfreebsd)
3934         add_cppflags -D_BSD_SOURCE
3935         ;;
3936     gnu)
3937         ;;
3938     qnx)
3939         add_cppflags -D_QNX_SOURCE
3940         network_extralibs="-lsocket"
3941         ;;
3942     symbian)
3943         SLIBSUF=".dll"
3944         enable dos_paths
3945         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3946         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3947         add_ldflags -Wl,--target1-abs,--no-undefined \
3948                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3949                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3950         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3951                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3952                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3953         ;;
3954     osf1)
3955         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3956         ;;
3957     minix)
3958         ;;
3959     plan9)
3960         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3961                      -D_REENTRANT_SOURCE        \
3962                      -D_RESEARCH_SOURCE         \
3963                      -DFD_SETSIZE=96            \
3964                      -DHAVE_SOCK_OPTS
3965         add_compat strtod.o strtod=avpriv_strtod
3966         network_extralibs='-lbsd'
3967         exeobjs=compat/plan9/main.o
3968         cp_f='cp'
3969         ;;
3970     none)
3971         ;;
3972     *)
3973         die "Unknown OS '$target_os'."
3974         ;;
3975 esac
3976
3977 # determine libc flavour
3978
3979 probe_libc(){
3980     pfx=$1
3981     pfx_no_=${pfx%_}
3982     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3983     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3984         eval ${pfx}libc_type=uclibc
3985         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3986     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3987         eval ${pfx}libc_type=glibc
3988         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3989     # MinGW headers can be installed on Cygwin, so check for newlib first.
3990     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3991         eval ${pfx}libc_type=newlib
3992         add_${pfx}cppflags -U__STRICT_ANSI__
3993     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3994     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3995         eval ${pfx}libc_type=mingw64
3996         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3997         eval test \$${pfx_no_}cc_type = "gcc" &&
3998             add_${pfx}cppflags -D__printf__=__gnu_printf__
3999     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4000          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4001         eval ${pfx}libc_type=mingw32
4002         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4003             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4004             die "ERROR: MinGW32 runtime version must be >= 3.15."
4005         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4006         eval test \$${pfx_no_}cc_type = "gcc" &&
4007             add_${pfx}cppflags -D__printf__=__gnu_printf__
4008     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4009         eval ${pfx}libc_type=msvcrt
4010         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4011             if [ "$pfx" = host_ ]; then
4012                 add_host_cppflags -Dsnprintf=_snprintf
4013             else
4014                 add_compat strtod.o strtod=avpriv_strtod
4015                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4016                                              _snprintf=avpriv_snprintf  \
4017                                              vsnprintf=avpriv_vsnprintf
4018             fi
4019         fi
4020         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4021         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4022         # 0x601 by default unless something else is set by the user.
4023         # This can easily lead to us detecting functions only present
4024         # in such new versions and producing binaries requiring windows 7.0.
4025         # Therefore explicitly set the default to XP unless the user has
4026         # set something else on the command line.
4027         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4028         # family. For these cases, configure is free to use any functions
4029         # found in the SDK headers by default. (Alternatively, we could force
4030         # _WIN32_WINNT to 0x0602 in that case.)
4031         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4032             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4033 #ifdef WINAPI_FAMILY
4034 #include <winapifamily.h>
4035 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4036 #error not desktop
4037 #endif
4038 #endif
4039 EOF
4040         if [ "$pfx" = "" ]; then
4041             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4042         fi
4043     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4044         eval ${pfx}libc_type=klibc
4045     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4046         eval ${pfx}libc_type=bionic
4047     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4048         eval ${pfx}libc_type=solaris
4049         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4050     else
4051         eval ${pfx}libc_type=default
4052         add_${pfx}cppflags -D_DEFAULT_SOURCE
4053     fi
4054 }
4055
4056 probe_libc
4057 test -n "$libc_type" && enable libc_$libc_type
4058 probe_libc host_
4059 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4060
4061 case $libc_type in
4062     bionic)
4063         add_compat strtod.o strtod=avpriv_strtod
4064         ;;
4065 esac
4066
4067 # hacks for compiler/libc/os combinations
4068
4069 if enabled_all tms470 libc_glibc; then
4070     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4071     add_cppflags -D__USER_LABEL_PREFIX__=
4072     add_cppflags -D__builtin_memset=memset
4073     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4074     add_cflags   -pds=48    # incompatible redefinition of macro
4075 fi
4076
4077 if enabled_all ccc libc_glibc; then
4078     add_ldflags -Wl,-z,now  # calls to libots crash without this
4079 fi
4080
4081 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4082     add_cppflags '-I\$(SRC_PATH)/compat/float'
4083
4084 esc(){
4085     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4086 }
4087
4088 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
4089
4090 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4091
4092 set_default $PATHS_LIST
4093 set_default nm
4094
4095 # we need to build at least one lib type
4096 if ! enabled_any static shared; then
4097     cat <<EOF
4098 At least one library type must be built.
4099 Specify --enable-static to build the static libraries or --enable-shared to
4100 build the shared libraries as well. To only build the shared libraries specify
4101 --disable-static in addition to --enable-shared.
4102 EOF
4103     exit 1
4104 fi
4105
4106 die_license_disabled() {
4107     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4108 }
4109
4110 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
4111 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
4112 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
4113
4114 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4115
4116 disabled optimizations || check_cflags -fomit-frame-pointer
4117
4118 enable_weak_pic() {
4119     disabled pic && return
4120     enable pic
4121     add_cppflags -DPIC
4122     case "$target_os" in
4123     mingw*|cygwin*)
4124         ;;
4125     *)
4126         add_cflags -fPIC
4127         ;;
4128     esac
4129     add_asflags  -fPIC
4130 }
4131
4132 enabled pic && enable_weak_pic
4133
4134 check_cc <<EOF || die "Symbol mangling check failed."
4135 int ff_extern;
4136 EOF
4137 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4138 extern_prefix=${sym%%ff_extern*}
4139
4140 check_cc <<EOF && enable_weak inline_asm
4141 void foo(void) { __asm__ volatile ("" ::); }
4142 EOF
4143
4144 _restrict=
4145 for restrict_keyword in restrict __restrict__ __restrict; do
4146     check_cc <<EOF && _restrict=$restrict_keyword && break
4147 void foo(char * $restrict_keyword p);
4148 EOF
4149 done
4150
4151 check_cc <<EOF && enable pragma_deprecated
4152 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4153 EOF
4154
4155 check_cc <<EOF && enable attribute_packed
4156 struct { int x; } __attribute__((packed)) x;
4157 EOF
4158
4159 check_cc <<EOF && enable attribute_may_alias
4160 union { int x; } __attribute__((may_alias)) x;
4161 EOF
4162
4163 check_cc <<EOF || die "endian test failed"
4164 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4165 EOF
4166 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4167
4168 check_gas() {
4169     log "check_gas using '$as' as AS"
4170     # :vararg is used on aarch64, arm and ppc altivec
4171     check_as <<EOF || return 1
4172 .macro m n, y:vararg=0
4173 \n: .int \y
4174 .endm
4175 m x
4176 EOF
4177     # .altmacro is only used in arm asm
4178     ! enabled arm || check_as <<EOF || return 1
4179 .altmacro
4180 EOF
4181     enable gnu_as
4182     return 0
4183 }
4184
4185 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4186     nogas=:
4187     enabled_any arm aarch64 && nogas=die
4188     enabled_all ppc altivec && nogas=warn
4189     as_noop=-v
4190
4191     case $as_type in
4192         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4193         gcc)  gaspp_as_type=gas ;;
4194         *)    gaspp_as_type=$as_type ;;
4195     esac
4196
4197     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4198
4199     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4200         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4201
4202     if ! check_gas ; then
4203         as=${gas:=$as}
4204         check_gas || \
4205             $nogas "GNU assembler not found, install/update gas-preprocessor"
4206     fi
4207
4208     check_as <<EOF && enable as_func
4209 .func test
4210 .endfunc
4211 EOF
4212 fi
4213
4214 check_inline_asm inline_asm_labels '"1:\n"'
4215
4216 if enabled aarch64; then
4217     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4218     # internal assembler in clang 3.3 does not support this instruction
4219     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4220     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4221
4222     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4223
4224 elif enabled alpha; then
4225
4226     check_cflags -mieee
4227
4228 elif enabled arm; then
4229
4230     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4231     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4232     enabled thumb && check_cflags -mthumb || check_cflags -marm
4233
4234     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4235         enable vfp_args
4236     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4237         enable vfp_args
4238     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4239         case "${cross_prefix:-$cc}" in
4240             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4241             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4242 __asm__ (".eabi_attribute 28, 1");
4243 int main(void) { return 0; }
4244 EOF
4245         esac
4246         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4247     fi
4248
4249     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4250     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4251     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4252     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4253     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4254     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4255
4256     [ $target_os = linux ] || [ $target_os = android ] ||
4257         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4258             $ARCH_EXT_LIST_ARM
4259
4260     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4261
4262     check_as <<EOF && enable as_dn_directive
4263 ra .dn d0.i16
4264 .unreq ra
4265 EOF
4266     check_as <<EOF && enable as_fpu_directive
4267 .fpu neon
4268 EOF
4269
4270     # llvm's integrated assembler supports .object_arch from llvm 3.5
4271     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4272 .object_arch armv4
4273 EOF
4274
4275     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4276
4277 elif enabled mips; then
4278
4279     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4280
4281     # make sure that only an instruction set is enabled
4282     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4283
4284     if enabled mips64; then
4285         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4286             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4287                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4288     else
4289         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4290             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4291                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4292     fi
4293
4294 elif enabled parisc; then
4295
4296     if enabled gcc; then
4297         case $($cc -dumpversion) in
4298             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4299         esac
4300     fi
4301
4302 elif enabled ppc; then
4303
4304     enable local_aligned_8 local_aligned_16 local_aligned_32
4305
4306     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4307     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4308     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4309     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4310
4311     # AltiVec flags: The FSF version of GCC differs from the Apple version
4312     if enabled altivec; then
4313         check_cflags -maltivec -mabi=altivec &&
4314         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4315         check_cflags -faltivec
4316
4317         # check if our compiler supports Motorola AltiVec C API
4318         check_cc <<EOF || disable altivec
4319 $inc_altivec_h
4320 int main(void) {
4321     vector signed int v1 = (vector signed int) { 0 };
4322     vector signed int v2 = (vector signed int) { 1 };
4323     v1 = vec_add(v1, v2);
4324     return 0;
4325 }
4326 EOF
4327
4328         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4329     fi
4330
4331     if enabled vsx; then
4332         check_cflags -mvsx &&
4333         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4334     fi
4335
4336     if enabled power8; then
4337         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4338     fi
4339
4340 elif enabled x86; then
4341
4342     check_builtin rdtsc    intrin.h   "__rdtsc()"
4343     check_builtin mm_empty mmintrin.h "_mm_empty()"
4344
4345     enable local_aligned_8 local_aligned_16 local_aligned_32
4346
4347     # check whether EBP is available on x86
4348     # As 'i' is stored on the stack, this program will crash
4349     # if the base pointer is used to access it because the
4350     # base pointer is cleared in the inline assembly code.
4351     check_exec_crash <<EOF && enable ebp_available
4352 volatile int i=0;
4353 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4354 return i;
4355 EOF
4356
4357     # check whether EBX is available on x86
4358     check_inline_asm ebx_available '""::"b"(0)' &&
4359         check_inline_asm ebx_available '"":::"%ebx"'
4360
4361     # check whether xmm clobbers are supported
4362     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4363
4364     # check whether binutils is new enough to compile SSSE3/MMXEXT
4365     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4366     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4367
4368     if ! disabled_any asm mmx yasm; then
4369         if check_cmd $yasmexe --version; then
4370             enabled x86_64 && yasm_extra="-m amd64"
4371             yasm_debug="-g dwarf2"
4372         elif check_cmd nasm -v; then
4373             yasmexe=nasm
4374             yasm_debug="-g -F dwarf"
4375             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4376         fi
4377
4378         YASMFLAGS="-f $objformat $yasm_extra"
4379         enabled pic               && append YASMFLAGS "-DPIC"
4380         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4381         case "$objformat" in
4382             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4383         esac
4384
4385         check_yasm "movbe ecx, [5]" && enable yasm ||
4386             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4387         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4388         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4389         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4390         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4391         check_yasm "CPU amdnop" || disable cpunop
4392     fi
4393
4394     case "$cpu" in
4395         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4396             disable fast_clz
4397         ;;
4398     esac
4399
4400 fi
4401
4402 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4403
4404 check_ldflags -Wl,--as-needed
4405
4406 if check_func dlopen; then
4407     ldl=
4408 elif check_func dlopen -ldl; then
4409     ldl=-ldl
4410 fi
4411
4412 if ! disabled network; then
4413     check_func getaddrinfo $network_extralibs
4414     check_func inet_aton $network_extralibs
4415
4416     check_type netdb.h "struct addrinfo"
4417     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4418     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4419     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4420     check_type poll.h "struct pollfd"
4421     check_type netinet/sctp.h "struct sctp_event_subscribe"
4422     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4423     check_type netinet/in.h "struct sockaddr_in6"
4424     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4425     check_type "sys/types.h sys/socket.h" socklen_t
4426
4427     # Prefer arpa/inet.h over winsock2
4428     if check_header arpa/inet.h ; then
4429         check_func closesocket
4430     elif check_header winsock2.h ; then
4431         check_func_headers winsock2.h closesocket -lws2 &&
4432             network_extralibs="-lws2" ||
4433         { check_func_headers winsock2.h closesocket -lws2_32 &&
4434             network_extralibs="-lws2_32"; } || disable winsock2_h network
4435         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4436
4437         check_type ws2tcpip.h socklen_t
4438         check_type ws2tcpip.h "struct addrinfo"
4439         check_type ws2tcpip.h "struct group_source_req"
4440         check_type ws2tcpip.h "struct ip_mreq_source"
4441         check_type ws2tcpip.h "struct ipv6_mreq"
4442         check_type winsock2.h "struct pollfd"
4443         check_struct winsock2.h "struct sockaddr" sa_len
4444         check_type ws2tcpip.h "struct sockaddr_in6"
4445         check_type ws2tcpip.h "struct sockaddr_storage"
4446     else
4447         disable network
4448     fi
4449 fi
4450
4451 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4452 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4453 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4454 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4455
4456 case "$custom_allocator" in
4457     jemalloc)
4458         # jemalloc by default does not use a prefix
4459         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4460     ;;
4461     tcmalloc)
4462         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
4463         malloc_prefix=tc_
4464     ;;
4465 esac
4466
4467 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4468 check_func  ${malloc_prefix}memalign            && enable memalign
4469 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4470
4471 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4472     check_func_headers time.h clock_gettime || { check_func_headers time.h clock_gettime -lrt && add_extralibs -lrt && LIBRT="-lrt"; }
4473
4474 check_func  fcntl
4475 check_func  fork
4476 check_func  gethrtime
4477 check_func  getopt
4478 check_func  getrusage
4479 check_func  gettimeofday
4480 check_func  gmtime_r
4481 check_func  isatty
4482 check_func  localtime_r
4483 check_func  mach_absolute_time
4484 check_func  mkstemp
4485 check_func  mmap
4486 check_func  mprotect
4487 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4488 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4489 check_func  sched_getaffinity
4490 check_func  setrlimit
4491 check_func  strerror_r
4492 check_func  sysconf
4493 check_func  sysctl
4494 check_func  usleep
4495
4496 check_func_headers io.h setmode
4497 check_func_headers stdlib.h getenv
4498
4499 check_func_headers windows.h CoTaskMemFree -lole32
4500 check_func_headers windows.h GetProcessAffinityMask
4501 check_func_headers windows.h GetProcessTimes
4502 check_func_headers windows.h GetSystemTimeAsFileTime
4503 check_func_headers windows.h LoadLibrary
4504 check_func_headers windows.h MapViewOfFile
4505 check_func_headers windows.h SetConsoleTextAttribute
4506 check_func_headers windows.h Sleep
4507 check_func_headers windows.h VirtualAlloc
4508 check_struct windows.h "CONDITION_VARIABLE" Ptr
4509
4510 check_header direct.h
4511 check_header dlfcn.h
4512 check_header d3d11.h
4513 check_header dxva.h
4514 check_header dxva2api.h
4515 check_header io.h
4516 check_header mach/mach_time.h
4517 check_header malloc.h
4518 check_header poll.h
4519 check_header sys/mman.h
4520 check_header sys/param.h
4521 check_header sys/resource.h
4522 check_header sys/select.h
4523 check_header sys/time.h
4524 check_header sys/un.h
4525 check_header unistd.h
4526 check_header valgrind/valgrind.h
4527 check_header vdpau/vdpau.h
4528 check_header vdpau/vdpau_x11.h
4529 check_header VideoDecodeAcceleration/VDADecoder.h
4530 check_header windows.h
4531 check_header X11/extensions/XvMClib.h
4532
4533 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4534 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4535 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4536
4537 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4538
4539 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4540 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4541 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4542
4543 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4544 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4545 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4546 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4547
4548 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4549
4550 if ! disabled w32threads && ! enabled pthreads; then
4551     check_func_headers "windows.h process.h" _beginthreadex &&
4552         enable w32threads || disable w32threads
4553 fi
4554
4555 # check for some common methods of building with pthread support
4556 # do this before the optional library checks as some of them require pthreads
4557 if ! disabled pthreads && ! enabled w32threads; then
4558     enable pthreads
4559     if check_func pthread_join -pthread; then
4560         add_cflags -pthread
4561         add_extralibs -pthread
4562     elif check_func pthread_join -pthreads; then
4563         add_cflags -pthreads
4564         add_extralibs -pthreads
4565     elif check_func pthread_join -lpthreadGC2; then
4566         add_extralibs -lpthreadGC2
4567     elif check_lib pthread.h pthread_join -lpthread; then
4568         :
4569     elif ! check_func pthread_join; then
4570         disable pthreads
4571     fi
4572 fi
4573
4574 enabled pthreads &&
4575     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
4576
4577 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4578 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4579
4580 check_lib math.h sin -lm && LIBM="-lm"
4581 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4582
4583 atan2f_args=2
4584 ldexpf_args=2
4585 powf_args=2
4586
4587 for func in $MATH_FUNCS; do
4588     eval check_mathfunc $func \${${func}_args:-1}
4589 done
4590
4591 # these are off by default, so fail if requested and not available
4592 enabled avisynth          && { check_lib2 "avisynth/avisynth_c.h windows.h" LoadLibrary ||
4593                                check_lib2 "avxsynth/avxsynth_c.h dlfcn.h" dlopen -ldl   ||
4594                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4595 enabled cuda              && check_lib cuda.h cuInit -lcuda
4596 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4597 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4598 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4599 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4600 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4601 enabled libfdk_aac        && require_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4602 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4603 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4604 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4605                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4606                                done || die "ERROR: libgsm not found"; }
4607 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4608 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4609 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
4610 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4611 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4612 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4613 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4614 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4615 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
4616 enabled libopenjpeg       && { { check_header openjpeg.h && check_lib2 openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC; } ||
4617                                { require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; } }
4618 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4619 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4620 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4621 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4622 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
4623 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4624 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4625 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4626 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4627 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4628 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4629 enabled libvpx            && require_pkg_config "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version && {
4630     enabled libvpx_vp8_decoder && {
4631         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
4632             disable libvpx_vp8_decoder;
4633     }
4634     enabled libvpx_vp8_encoder && {
4635         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
4636             disable libvpx_vp8_encoder;
4637     }
4638     enabled libvpx_vp9_decoder && {
4639         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
4640             disable libvpx_vp9_decoder;
4641     }
4642     enabled libvpx_vp9_encoder && {
4643         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
4644             disable libvpx_vp9_encoder;
4645     }
4646     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
4647         die "libvpx enabled but no supported decoders found"
4648     fi
4649 }
4650 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4651 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4652 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4653                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4654                                die "ERROR: libx264 version must be >= 0.118."; } &&
4655                              { check_cpp_condition x264.h "X264_MPEG2" &&
4656                                enable libx262; }
4657 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
4658                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
4659                                die "ERROR: libx265 version must be >= 57."; }
4660 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4661 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4662 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4663                                 { ! enabled cross_compile && {
4664                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
4665                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
4666                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
4667                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
4668                                die "ERROR: mmal not found"; }
4669 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
4670 enabled omx_rpi && enable omx
4671 enabled omx               && { check_header OMX_Core.h ||
4672                                 { ! enabled cross_compile && enabled omx_rpi && {
4673                                     add_cflags -isystem/opt/vc/include/IL ; }
4674                                 check_header OMX_Core.h ; } ||
4675                                die "ERROR: OpenMAX IL headers not found"; }
4676 enabled openssl           && { check_pkg_config openssl openssl/ssl.h SSL_library_init && {
4677                                add_cflags $openssl_cflags && add_extralibs $openssl_libs; }||
4678                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4679                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4680                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4681                                die "ERROR: openssl not found"; }
4682
4683 if enabled gnutls; then
4684     { check_lib2 gmp.h mpz_export -lgmp && enable gmp; } ||
4685     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4686 fi
4687
4688 # libdc1394 check
4689 if enabled libdc1394; then
4690     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
4691         enable libdc1394_2; } ||
4692     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4693         enable libdc1394_1; } ||
4694     die "ERROR: No version of libdc1394 found "
4695 fi
4696
4697 if enabled nvenc; then
4698     check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."
4699     check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6" ||
4700         die "ERROR: NVENC API version 5 or older is not supported"
4701 fi
4702
4703 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4704     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4705     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4706     enable sdl
4707 fi
4708
4709 pod2man --help     > /dev/null 2>&1 && enable pod2man   || disable pod2man
4710 texi2html -version > /dev/null 2>&1 && enable texi2html || disable texi2html
4711
4712 check_header linux/fb.h
4713 check_header linux/videodev2.h
4714 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4715
4716 check_header AVFoundation/AVFoundation.h &&
4717     check_objcflags -fobjc-arc &&
4718     add_extralibs -framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia ||
4719     disable AVFoundation_AVFoundation_h
4720
4721 check_header sys/videoio.h
4722
4723 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4724 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4725 # w32api 3.12 had it defined wrong
4726 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4727
4728 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4729 { check_header dev/bktr/ioctl_meteor.h &&
4730   check_header dev/bktr/ioctl_bt848.h; } ||
4731 { check_header machine/ioctl_meteor.h &&
4732   check_header machine/ioctl_bt848.h; } ||
4733 { check_header dev/video/meteor/ioctl_meteor.h &&
4734   check_header dev/video/bktr/ioctl_bt848.h; } ||
4735 check_header dev/ic/bt8xx.h
4736
4737 check_header sndio.h
4738 check_header sys/soundcard.h
4739 check_header soundcard.h
4740
4741 enabled_any alsa_indev alsa_outdev &&
4742     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4743
4744 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack &&
4745     check_func jack_port_get_latency_range -ljack
4746
4747 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4748
4749 if enabled libcdio; then
4750     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4751     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4752     die "ERROR: No usable libcdio/cdparanoia found"
4753 fi
4754
4755 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4756
4757 if enabled libxcb; then
4758     check_pkg_config xcb-shape xcb/shape.h xcb_shape_rectangles || {
4759         enabled libxcb && die "ERROR: libxcb not found";
4760     } && enable libxcb
4761
4762     disabled libxcb_shm ||
4763         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
4764             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
4765         } && check_header sys/shm.h && enable libxcb_shm
4766
4767     disabled libxcb_xfixes ||
4768         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
4769             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
4770         } && enable libxcb_xfixes
4771
4772     add_cflags "$xcb_event_cflags $xcb_shm_cflags $xcb_xfixes_cflags"
4773     add_extralibs "$xcb_event_libs $xcb_shm_libs $xcb_xfixes_libs"
4774 fi
4775
4776 enabled vaapi &&
4777     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
4778     disable vaapi
4779
4780 if enabled vaapi ; then
4781     enabled xlib &&
4782     check_lib2 "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
4783     enable vaapi_x11
4784
4785     check_lib2 "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
4786     enable vaapi_drm
4787 fi
4788
4789 enabled vdpau &&
4790     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4791     disable vdpau
4792
4793 enabled vdpau && enabled xlib &&
4794     check_lib2 "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4795     enable vdpau_x11
4796
4797 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4798
4799 # add some useful compiler flags if supported
4800 check_cflags -Wdeclaration-after-statement
4801 check_cflags -Wall
4802 check_cflags -Wdisabled-optimization
4803 check_cflags -Wpointer-arith
4804 check_cflags -Wredundant-decls
4805 check_cflags -Wwrite-strings
4806 check_cflags -Wtype-limits
4807 check_cflags -Wundef
4808 check_cflags -Wmissing-prototypes
4809 check_cflags -Wstrict-prototypes
4810 enabled extra_warnings && check_cflags -Winline
4811 enabled extra_warnings && check_cflags -Wcast-qual
4812
4813 check_disable_warning(){
4814     warning_flag=-W${1#-Wno-}
4815     test_cflags $warning_flag && add_cflags $1
4816 }
4817
4818 check_disable_warning -Wno-parentheses
4819 check_disable_warning -Wno-switch
4820 check_disable_warning -Wno-format-zero-length
4821 check_disable_warning -Wno-pointer-sign
4822
4823 # add some linker flags
4824 check_ldflags -Wl,--warn-common
4825 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4826 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
4827 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4828
4829 # add some strip flags
4830 # -wN '..@*' is more selective than -x, but not available everywhere.
4831 check_stripflags -wN \'..@*\' || check_stripflags -x || strip='true'
4832
4833 enabled neon_clobber_test &&
4834     check_ldflags -Wl,--wrap,avcodec_open2              \
4835                   -Wl,--wrap,avcodec_decode_audio4      \
4836                   -Wl,--wrap,avcodec_decode_video2      \
4837                   -Wl,--wrap,avcodec_decode_subtitle2   \
4838                   -Wl,--wrap,avcodec_encode_audio2      \
4839                   -Wl,--wrap,avcodec_encode_video2      \
4840                   -Wl,--wrap,avcodec_encode_subtitle    \
4841                   -Wl,--wrap,avresample_convert ||
4842     disable neon_clobber_test
484