configure: #include stdint.h as part of libxavs test
[libav.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89   --enable-rpath           use rpath when linking programs [USE WITH CARE]
90
91 Licensing options:
92   --enable-gpl             allow use of GPL code, the resulting libs
93                            and binaries will be under GPL [no]
94   --enable-version3        upgrade (L)GPL to version 3 [no]
95   --enable-nonfree         allow use of nonfree code, the resulting libs
96                            and binaries will be unredistributable [no]
97
98 Configuration options:
99   --disable-static         do not build static libraries [no]
100   --enable-shared          build shared libraries [no]
101   --enable-small           optimize for size instead of speed
102   --enable-runtime-cpudetect detect cpu capabilities at runtime (bigger binary)
103   --enable-gray            enable full grayscale support (slower color)
104   --disable-swscale-alpha  disable alpha channel support in swscale
105   --disable-all            disable building components, libraries and programs
106
107 Program options:
108   --disable-programs       do not build command line programs
109   --disable-avconv         disable avconv build
110   --disable-avplay         disable avplay build
111   --disable-avprobe        disable avprobe build
112   --disable-avserver       deprecated, does nothing
113
114 Component options:
115   --disable-doc            do not build documentation
116   --disable-pod2man        do not build manual pages
117   --disable-texi2html      do not build HTML documentation
118   --disable-avdevice       disable libavdevice build
119   --disable-avcodec        disable libavcodec build
120   --disable-avformat       disable libavformat build
121   --disable-avutil         disable libavutil build
122   --disable-swscale        disable libswscale build
123   --disable-avfilter       disable video filter support [no]
124   --disable-avresample     disable libavresample build [no]
125   --disable-pthreads       disable pthreads [auto]
126   --disable-w32threads     disable Win32 threads [auto]
127   --disable-network        disable network support [no]
128   --disable-dct            disable DCT code
129   --disable-error-resilience disable error resilience code
130   --disable-lsp            disable LSP code
131   --disable-lzo            disable LZO decoder code
132   --disable-mdct           disable MDCT code
133   --disable-rdft           disable RDFT code
134   --disable-fft            disable FFT code
135   --disable-faan           disable floating point AAN (I)DCT code
136
137 Individual component options:
138   --disable-everything     disable all components listed below
139   --disable-encoder=NAME   disable encoder NAME
140   --enable-encoder=NAME    enable encoder NAME
141   --disable-encoders       disable all encoders
142   --disable-decoder=NAME   disable decoder NAME
143   --enable-decoder=NAME    enable decoder NAME
144   --disable-decoders       disable all decoders
145   --disable-hwaccel=NAME   disable hwaccel NAME
146   --enable-hwaccel=NAME    enable hwaccel NAME
147   --disable-hwaccels       disable all hwaccels
148   --disable-muxer=NAME     disable muxer NAME
149   --enable-muxer=NAME      enable muxer NAME
150   --disable-muxers         disable all muxers
151   --disable-demuxer=NAME   disable demuxer NAME
152   --enable-demuxer=NAME    enable demuxer NAME
153   --disable-demuxers       disable all demuxers
154   --enable-parser=NAME     enable parser NAME
155   --disable-parser=NAME    disable parser NAME
156   --disable-parsers        disable all parsers
157   --enable-bsf=NAME        enable bitstream filter NAME
158   --disable-bsf=NAME       disable bitstream filter NAME
159   --disable-bsfs           disable all bitstream filters
160   --enable-protocol=NAME   enable protocol NAME
161   --disable-protocol=NAME  disable protocol NAME
162   --disable-protocols      disable all protocols
163   --enable-indev=NAME      enable input device NAME
164   --disable-indev=NAME     disable input device NAME
165   --disable-indevs         disable input devices
166   --enable-outdev=NAME     enable output device NAME
167   --disable-outdev=NAME    disable output device NAME
168   --disable-outdevs        disable output devices
169   --disable-devices        disable all devices
170   --enable-filter=NAME     enable filter NAME
171   --disable-filter=NAME    disable filter NAME
172   --disable-filters        disable all filters
173
174 External library support:
175
176   Using any of the following switches will allow Libav to link to the
177   corresponding external library. All the components depending on that library
178   will become enabled, if all their other dependencies are met and they are not
179   explicitly disabled. E.g. --enable-libwavpack will enable linking to
180   libwavpack and allow the libwavpack encoder to be built, unless it is
181   specifically disabled with --disable-encoder=libwavpack.
182
183   Note that only the system libraries are auto-detected. All the other external
184   libraries must be explicitly enabled.
185
186   Also note that the following help text describes the purpose of the libraries
187   themselves, not all their features will necessarily be usable by Libav.
188
189   --enable-avisynth          video frameserver
190   --enable-bzlib             bzip2 compression [autodetect]
191   --enable-frei0r            video filtering plugins
192   --enable-gnutls            crypto
193   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
194   --enable-libcdio           audio CD input
195   --enable-libdc1394         IEEE 1394/Firewire camera input
196   --enable-libdcadec         DCA audio decoding
197   --enable-libfaac           AAC audio encoding
198   --enable-libfdk-aac        AAC audio encoding/decoding
199   --enable-libfontconfig     font configuration and management
200   --enable-libfreetype       font rendering
201   --enable-libgsm            GSM audio encoding/decoding
202   --enable-libhdcd           HDCD decoding filter
203   --enable-libilbc           ILBC audio encoding/decoding
204   --enable-libkvazaar        HEVC video encoding
205   --enable-libmp3lame        MP3 audio encoding
206   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
207   --enable-libopencore-amrwb AMR-WB audio decoding
208   --enable-libopencv         computer vision
209   --enable-libopenh264       H.264 video encoding/decoding
210   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
211   --enable-libopus           Opus audio encoding/decoding
212   --enable-libpulse          Pulseaudio sound server
213   --enable-librtmp           RTMP streaming
214   --enable-libschroedinger   Dirac video encoding/decoding
215   --enable-libsnappy         snappy compression
216   --enable-libspeex          Speex audio encoding/decoding
217   --enable-libtheora         Theora video encoding/decoding
218   --enable-libtwolame        MP2 audio encoding
219   --enable-libvo-aacenc      AAC audio encoding
220   --enable-libvo-amrwbenc    AMR-WB audio encoding
221   --enable-libvorbis         Vorbis audio encoding/decoding
222   --enable-libvpx            VP* video encoding/decoding
223   --enable-libwavpack        Wavpack audio encoding/decoding
224   --enable-libwebp           WebP image encoding/decoding
225   --enable-libx264           H.264 video encoding
226   --enable-libx265           HEVC video encoding
227   --enable-libxavs           Chinese AVS video encoding
228   --enable-libxcb            X window system protocol communication
229   --enable-libxcb-shm        X11 shm communication [auto]
230   --enable-libxcb-xfixes     X11 mouse rendering [auto]
231   --enable-libxvid           MPEG-4 ASP video encoding
232   --enable-openssl           crypto
233   --enable-zlib              compression [autodetect]
234
235   The following libraries provide various hardware acceleration features:
236   --enable-cuda    Nvidia CUDA (dynamically linked)
237   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
238   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
239   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
240   --enable-libnpp  Nvidia CUDA processing
241   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
242   --enable-nvenc   Nvidia video encoding
243   --enable-omx     OpenMAX IL
244   --enable-omx-rpi OpenMAX IL for Raspberry Pi
245   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
246   --enable-vda     Apple Video Decode Acceleration [auto]
247   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
248
249 Toolchain options:
250   --arch=ARCH              select architecture [$arch]
251   --cpu=CPU                select the minimum required CPU (affects
252                            instruction selection, may crash on older CPUs)
253   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
254   --enable-cross-compile   assume a cross-compiler is used
255   --sysroot=PATH           root of cross-build tree
256   --sysinclude=PATH        location of cross-build system headers
257   --target-os=OS           compiler targets OS [$target_os]
258   --target-exec=CMD        command to run executables on target
259   --target-path=DIR        path to view of build directory on target
260   --target-samples=DIR     path to samples directory on target
261   --toolchain=NAME         set tool defaults according to NAME
262   --nm=NM                  use nm tool
263   --ar=AR                  use archive tool AR [$ar_default]
264   --as=AS                  use assembler AS [$as_default]
265   --cc=CC                  use C compiler CC [$cc_default]
266   --objcc=OCC              use ObjC compiler OCC [$cc_default]
267   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
268   --ld=LD                  use linker LD
269   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
270   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
271   --host-cc=HOSTCC         use host C compiler HOSTCC
272   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
273   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
274   --host-ld=HOSTLD         use host linker HOSTLD
275   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
276   --host-libs=HLIBS        use libs HLIBS when linking for host
277   --host-os=OS             compiler host OS [$target_os]
278   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
279   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
280   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
281   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
282   --extra-libs=ELIBS       add ELIBS [$ELIBS]
283   --extra-version=STRING   version string suffix []
284   --optflags=OPTFLAGS      override optimization-related compiler flags
285   --build-suffix=SUFFIX    library name suffix []
286   --enable-pic             build position-independent code
287   --enable-thumb           compile for Thumb instruction set
288   --enable-lto             use link-time optimization
289   --env="ENV=override"     override the environment variables
290
291 Advanced options (experts only):
292   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
293   --custom-allocator=NAME  use a supported custom allocator
294   --disable-symver         disable symbol versioning
295   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
296   --disable-safe-bitstream-reader
297                            disable buffer boundary checking in bitreaders
298                            (faster, but may crash)
299   --enable-sram            allow use of on-chip SRAM
300
301 Optimization options (experts only):
302   --disable-asm            disable all assembly optimizations
303   --disable-altivec        disable AltiVec optimizations
304   --disable-vsx            disable VSX optimizations
305   --disable-power8         disable POWER8 optimizations
306   --disable-amd3dnow       disable 3DNow! optimizations
307   --disable-amd3dnowext    disable 3DNow! extended optimizations
308   --disable-mmx            disable MMX optimizations
309   --disable-mmxext         disable MMXEXT optimizations
310   --disable-sse            disable SSE optimizations
311   --disable-sse2           disable SSE2 optimizations
312   --disable-sse3           disable SSE3 optimizations
313   --disable-ssse3          disable SSSE3 optimizations
314   --disable-sse4           disable SSE4 optimizations
315   --disable-sse42          disable SSE4.2 optimizations
316   --disable-avx            disable AVX optimizations
317   --disable-xop            disable XOP optimizations
318   --disable-fma3           disable FMA3 optimizations
319   --disable-fma4           disable FMA4 optimizations
320   --disable-avx2           disable AVX2 optimizations
321   --disable-armv5te        disable armv5te optimizations
322   --disable-armv6          disable armv6 optimizations
323   --disable-armv6t2        disable armv6t2 optimizations
324   --disable-vfp            disable VFP optimizations
325   --disable-neon           disable NEON optimizations
326   --disable-inline-asm     disable use of inline assembly
327   --disable-yasm           disable use of nasm/yasm assembly
328
329 Developer options (useful when working on Libav itself):
330   --disable-debug          disable debugging symbols
331   --enable-debug=LEVEL     set the debug level [$debuglevel]
332   --disable-optimizations  disable compiler optimizations
333   --enable-extra-warnings  enable more compiler warnings
334   --samples=PATH           location of test samples for FATE, if not set use
335                            \$LIBAV_SAMPLES at make invocation time.
336   --enable-neon-clobber-test check NEON registers for clobbering (should be
337                            used only for debugging purposes)
338   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
339                            should be used only for debugging purposes)
340   --enable-random          randomly enable/disable components
341   --disable-random
342   --enable-random=LIST     randomly enable/disable specific components or
343   --disable-random=LIST    component groups. LIST is a comma-separated list
344                            of NAME[:PROB] entries where NAME is a component
345                            (group) and PROB the probability associated with
346                            NAME (default 0.5).
347   --random-seed=VALUE      seed value for --enable/disable-random
348   --disable-valgrind-backtrace do not print a backtrace under Valgrind
349                            (only applies to --disable-optimizations builds)
350
351 NOTE: Object files are built at the place where configure is launched.
352 EOF
353   exit 0
354 }
355
356 quotes='""'
357
358 log(){
359     echo "$@" >> $logfile
360 }
361
362 log_file(){
363     log BEGIN $1
364     i=1
365     while read line; do
366         printf '%5s   %s\n' "${i}" "${line}"
367         i=$(($i+1))
368     done < $1 >> $logfile
369     log END $1
370 }
371
372 echolog(){
373     log "$@"
374     echo "$@"
375 }
376
377 warn(){
378     log "WARNING: $*"
379     WARNINGS="${WARNINGS}WARNING: $*\n"
380 }
381
382 die(){
383     echolog "$@"
384     cat <<EOF
385
386 If you think configure made a mistake, make sure you are using the latest
387 version from Git.  If the latest version fails, report the problem to the
388 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
389 EOF
390     if disabled logging; then
391         cat <<EOF
392 Rerun configure with logging enabled (do not use --disable-logging), and
393 include the log this produces with your report.
394 EOF
395     else
396         cat <<EOF
397 Include the log file "$logfile" produced by configure as this will help
398 solving the problem.
399 EOF
400     fi
401     exit 1
402 }
403
404 # Avoid locale weirdness, besides we really just want to translate ASCII.
405 toupper(){
406     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
407 }
408
409 tolower(){
410     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
411 }
412
413 c_escape(){
414     echo "$*" | sed 's/["\\]/\\\0/g'
415 }
416
417 sh_quote(){
418     v=$(echo "$1" | sed "s/'/'\\\\''/g")
419     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
420     echo "$v"
421 }
422
423 cleanws(){
424     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
425 }
426
427 filter(){
428     pat=$1
429     shift
430     for v; do
431         eval "case $v in $pat) echo $v ;; esac"
432     done
433 }
434
435 filter_out(){
436     pat=$1
437     shift
438     for v; do
439         eval "case $v in $pat) ;; *) echo $v ;; esac"
440     done
441 }
442
443 map(){
444     m=$1
445     shift
446     for v; do eval $m; done
447 }
448
449 add_suffix(){
450     suffix=$1
451     shift
452     for v; do echo ${v}${suffix}; done
453 }
454
455 set_all(){
456     value=$1
457     shift
458     for var in $*; do
459         eval $var=$value
460     done
461 }
462
463 set_weak(){
464     value=$1
465     shift
466     for var; do
467         eval : \${$var:=$value}
468     done
469 }
470
471 sanitize_var_name(){
472     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
473 }
474
475 set_safe(){
476     var=$1
477     shift
478     eval $(sanitize_var_name "$var")='$*'
479 }
480
481 get_safe(){
482     eval echo \$$(sanitize_var_name "$1")
483 }
484
485 pushvar(){
486     for pvar in $*; do
487         eval level=\${${pvar}_level:=0}
488         eval ${pvar}_${level}="\$$pvar"
489         eval ${pvar}_level=$(($level+1))
490     done
491 }
492
493 popvar(){
494     for pvar in $*; do
495         eval level=\${${pvar}_level:-0}
496         test $level = 0 && continue
497         eval level=$(($level-1))
498         eval $pvar="\${${pvar}_${level}}"
499         eval ${pvar}_level=$level
500         eval unset ${pvar}_${level}
501     done
502 }
503
504 enable(){
505     set_all yes $*
506 }
507
508 disable(){
509     set_all no $*
510 }
511
512 enable_weak(){
513     set_weak yes $*
514 }
515
516 disable_weak(){
517     set_weak no $*
518 }
519
520 enable_safe(){
521     for var; do
522         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
523     done
524 }
525
526 disable_safe(){
527     for var; do
528         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
529     done
530 }
531
532 do_enable_deep(){
533     for var; do
534         enabled $var && continue
535         eval sel="\$${var}_select"
536         eval sgs="\$${var}_suggest"
537         pushvar var sgs
538         enable_deep $sel
539         popvar sgs
540         enable_deep_weak $sgs
541         popvar var
542     done
543 }
544
545 enable_deep(){
546     do_enable_deep $*
547     enable $*
548 }
549
550 enable_deep_weak(){
551     for var; do
552         disabled $var && continue
553         pushvar var
554         do_enable_deep $var
555         popvar var
556         enable_weak $var
557     done
558 }
559
560 enabled(){
561     test "${1#!}" = "$1" && op== || op=!=
562     eval test "x\$${1#!}" $op "xyes"
563 }
564
565 disabled(){
566     test "${1#!}" = "$1" && op== || op=!=
567     eval test "x\$${1#!}" $op "xno"
568 }
569
570 enabled_all(){
571     for opt; do
572         enabled $opt || return 1
573     done
574 }
575
576 disabled_all(){
577     for opt; do
578         disabled $opt || return 1
579     done
580 }
581
582 enabled_any(){
583     for opt; do
584         enabled $opt && return 0
585     done
586 }
587
588 disabled_any(){
589     for opt; do
590         disabled $opt && return 0
591     done
592     return 1
593 }
594
595 set_default(){
596     for opt; do
597         eval : \${$opt:=\$${opt}_default}
598     done
599 }
600
601 is_in(){
602     value=$1
603     shift
604     for var in $*; do
605         [ $var = $value ] && return 0
606     done
607     return 1
608 }
609
610 do_check_deps(){
611     for cfg; do
612         cfg="${cfg#!}"
613         enabled ${cfg}_checking && die "Circular dependency for $cfg."
614         disabled ${cfg}_checking && continue
615         enable ${cfg}_checking
616         append allopts $cfg
617
618         eval dep_all="\$${cfg}_deps"
619         eval dep_any="\$${cfg}_deps_any"
620         eval dep_sel="\$${cfg}_select"
621         eval dep_sgs="\$${cfg}_suggest"
622         eval dep_ifa="\$${cfg}_if"
623         eval dep_ifn="\$${cfg}_if_any"
624
625         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
626         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
627         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
628
629         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
630         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
631         enabled_all  $dep_all || disable $cfg
632         enabled_any  $dep_any || disable $cfg
633         disabled_any $dep_sel && disable $cfg
634
635         if enabled $cfg; then
636             enable_deep $dep_sel
637             enable_deep_weak $dep_sgs
638         fi
639
640         disable ${cfg}_checking
641     done
642 }
643
644 check_deps(){
645     unset allopts
646
647     do_check_deps "$@"
648
649     for cfg in $allopts; do
650         enabled $cfg || continue
651         eval dep_extralibs="\$${cfg}_extralibs"
652         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
653     done
654 }
655
656 print_config(){
657     pfx=$1
658     files=$2
659     shift 2
660     map 'eval echo "$v \${$v:-no}"' "$@" |
661     awk "BEGIN { split(\"$files\", files) }
662         {
663             c = \"$pfx\" toupper(\$1);
664             v = \$2;
665             sub(/yes/, 1, v);
666             sub(/no/,  0, v);
667             for (f in files) {
668                 file = files[f];
669                 if (file ~ /\\.h\$/) {
670                     printf(\"#define %s %d\\n\", c, v) >>file;
671                 } else if (file ~ /\\.asm\$/) {
672                     printf(\"%%define %s %d\\n\", c, v) >>file;
673                 } else if (file ~ /\\.mak\$/) {
674                     n = -v ? \"\" : \"!\";
675                     printf(\"%s%s=yes\\n\", n, c) >>file;
676                 }
677             }
678         }"
679 }
680
681 print_enabled(){
682     suf=$1
683     shift
684     for v; do
685         enabled $v && printf "%s\n" ${v%$suf}
686     done
687 }
688
689 append(){
690     var=$1
691     shift
692     eval "$var=\"\$$var $*\""
693 }
694
695 prepend(){
696     var=$1
697     shift
698     eval "$var=\"$* \$$var\""
699 }
700
701 unique(){
702     var=$1
703     uniq_list=""
704     for tok in $(eval echo \$$var); do
705         uniq_list="$(filter_out $tok $uniq_list) $tok"
706     done
707     eval "$var=\"${uniq_list}\""
708 }
709
710 add_cppflags(){
711     append CPPFLAGS "$@"
712 }
713
714 add_cflags(){
715     append CFLAGS $($cflags_filter "$@")
716 }
717
718 add_asflags(){
719     append ASFLAGS $($asflags_filter "$@")
720 }
721
722 add_objcflags(){
723     append OBJCFLAGS $($objcflags_filter "$@")
724 }
725
726 add_ldflags(){
727     append LDFLAGS $($ldflags_filter "$@")
728 }
729
730 add_ldexeflags(){
731     append LDEXEFLAGS $($ldflags_filter "$@")
732 }
733
734 add_stripflags(){
735     append STRIPFLAGS "$@"
736 }
737
738 add_extralibs(){
739     prepend extralibs $($ldflags_filter "$@")
740 }
741
742 add_host_cppflags(){
743     append host_cppflags "$@"
744 }
745
746 add_host_cflags(){
747     append host_cflags $($host_cflags_filter "$@")
748 }
749
750 add_host_ldflags(){
751     append host_ldflags $($host_ldflags_filter "$@")
752 }
753
754 add_compat(){
755     append compat_objs $1
756     shift
757     map 'add_cppflags -D$v' "$@"
758 }
759
760 check_cmd(){
761     log "$@"
762     "$@" >> $logfile 2>&1
763 }
764
765 cc_o(){
766     eval printf '%s\\n' $CC_O
767 }
768
769 cc_e(){
770     eval printf '%s\\n' $CC_E
771 }
772
773 check_cc(){
774     log check_cc "$@"
775     cat > $TMPC
776     log_file $TMPC
777     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
778 }
779
780 check_objcc(){
781     log check_objcc "$@"
782     cat > $TMPC
783     log_file $TMPC
784     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
785 }
786
787 check_cpp(){
788     log check_cpp "$@"
789     cat > $TMPC
790     log_file $TMPC
791     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
792 }
793
794 as_o(){
795     eval printf '%s\\n' $AS_O
796 }
797
798 check_as(){
799     log check_as "$@"
800     cat > $TMPS
801     log_file $TMPS
802     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
803 }
804
805 check_inline_asm(){
806     log check_inline_asm "$@"
807     name="$1"
808     code="$2"
809     shift 2
810     disable $name
811     check_cc "$@" <<EOF && enable $name
812 void foo(void){ __asm__ volatile($code); }
813 EOF
814 }
815
816 check_insn(){
817     log check_insn "$@"
818     check_inline_asm ${1}_inline "\"$2\""
819     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
820 }
821
822 check_yasm(){
823     log check_yasm "$@"
824     echo "$1" > $TMPS
825     log_file $TMPS
826     shift 1
827     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
828 }
829
830 ld_o(){
831     eval printf '%s\\n' $LD_O
832 }
833
834 check_ld(){
835     log check_ld "$@"
836     flags=$(filter_out '-l*' "$@")
837     libs=$(filter '-l*' "$@")
838     check_cc $($cflags_filter $flags) || return
839     flags=$($ldflags_filter $flags)
840     libs=$($ldflags_filter $libs)
841     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
842 }
843
844 print_include(){
845     hdr=$1
846     test "${hdr%.h}" = "${hdr}" &&
847         echo "#include $hdr"    ||
848         echo "#include <$hdr>"
849 }
850
851 check_code(){
852     log check_code "$@"
853     check=$1
854     headers=$2
855     code=$3
856     shift 3
857     {
858         for hdr in $headers; do
859             print_include $hdr
860         done
861         echo "int main(void) { $code; return 0; }"
862     } | check_$check "$@"
863 }
864
865 check_cppflags(){
866     log check_cppflags "$@"
867     check_cc "$@" <<EOF && append CPPFLAGS "$@"
868 int x;
869 EOF
870 }
871
872 test_cflags(){
873     log test_cflags "$@"
874     set -- $($cflags_filter "$@")
875     check_cc "$@" <<EOF
876 int x;
877 EOF
878 }
879
880 check_cflags(){
881     log check_cflags "$@"
882     test_cflags "$@" && add_cflags "$@"
883 }
884
885 test_objcflags(){
886     log test_cflags "$@"
887     set -- $($cflags_filter "$@")
888     check_objcc "$@" <<EOF
889 int x;
890 EOF
891 }
892
893 check_objcflags(){
894     log check_cflags "$@"
895     test_objcflags "$@" && add_objcflags "$@"
896 }
897
898 test_ldflags(){
899     log test_ldflags "$@"
900     check_ld "$@" <<EOF
901 int main(void){ return 0; }
902 EOF
903 }
904
905 check_ldflags(){
906     log check_ldflags "$@"
907     test_ldflags "$@" && add_ldflags "$@"
908 }
909
910 test_stripflags(){
911     log test_stripflags "$@"
912     # call check_cc to get a fresh TMPO
913     check_cc <<EOF
914 int main(void) { return 0; }
915 EOF
916     check_cmd $strip $STRIPFLAGS "$@" $TMPO
917 }
918
919 check_stripflags(){
920     log check_stripflags "$@"
921     test_stripflags "$@" && add_stripflags "$@"
922 }
923
924 check_header(){
925     log check_header "$@"
926     header=$1
927     shift
928     disable_safe $header
929     check_cpp "$@" <<EOF && enable_safe $header
930 #include <$header>
931 int x;
932 EOF
933 }
934
935 check_func(){
936     log check_func "$@"
937     func=$1
938     shift
939     disable $func
940     check_ld "$@" <<EOF && enable $func
941 extern int $func();
942 int main(void){ $func(); }
943 EOF
944 }
945
946 check_mathfunc(){
947     log check_mathfunc "$@"
948     func=$1
949     narg=$2
950     shift 2
951     test $narg = 2 && args="f, g" || args="f"
952     disable $func
953     check_ld "$@" <<EOF && enable $func
954 #include <math.h>
955 float foo(float f, float g) { return $func($args); }
956 int main(void){ return 0; }
957 EOF
958 }
959
960 check_func_headers(){
961     log check_func_headers "$@"
962     headers=$1
963     funcs=$2
964     shift 2
965     {
966         for hdr in $headers; do
967             print_include $hdr
968         done
969         for func in $funcs; do
970             echo "long check_$func(void) { return (long) $func; }"
971         done
972         echo "int main(void) { return 0; }"
973     } | check_ld "$@" && enable $funcs && enable_safe $headers
974 }
975
976 check_cpp_condition(){
977     log check_cpp_condition "$@"
978     header=$1
979     condition=$2
980     shift 2
981     check_cpp "$@" <<EOF
982 #include <$header>
983 #if !($condition)
984 #error "unsatisfied condition: $condition"
985 #endif
986 EOF
987 }
988
989 test_cflags_cpp(){
990     log test_cflags_cpp "$@"
991     flags=$1
992     condition=$2
993     shift 2
994     set -- $($cflags_filter "$flags")
995     check_cpp "$@" <<EOF
996 #if !($condition)
997 #error "unsatisfied condition: $condition"
998 #endif
999 EOF
1000 }
1001
1002 check_lib(){
1003     log check_lib "$@"
1004     headers="$1"
1005     funcs="$2"
1006     shift 2
1007     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1008 }
1009
1010 check_pkg_config(){
1011     log check_pkg_config "$@"
1012     pkg="$1"
1013     headers="$2"
1014     funcs="$3"
1015     shift 3
1016     check_cmd $pkg_config --exists --print-errors $pkg || return
1017     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1018     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1019     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1020         set_safe "${pkg}_cflags" $pkg_cflags   &&
1021         set_safe "${pkg}_libs"   $pkg_libs
1022 }
1023
1024 check_exec(){
1025     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1026 }
1027
1028 check_exec_crash(){
1029     code=$(cat)
1030
1031     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1032     # are safe but may not be available everywhere.  Thus we use
1033     # raise(SIGTERM) instead.  The check is run in a subshell so we
1034     # can redirect the "Terminated" message from the shell.  SIGBUS
1035     # is not defined by standard C so it is used conditionally.
1036
1037     (check_exec "$@") >> $logfile 2>&1 <<EOF
1038 #include <signal.h>
1039 static void sighandler(int sig){
1040     raise(SIGTERM);
1041 }
1042 int foo(void){
1043     $code
1044 }
1045 int (*func_ptr)(void) = foo;
1046 int main(void){
1047     signal(SIGILL, sighandler);
1048     signal(SIGFPE, sighandler);
1049     signal(SIGSEGV, sighandler);
1050 #ifdef SIGBUS
1051     signal(SIGBUS, sighandler);
1052 #endif
1053     return func_ptr();
1054 }
1055 EOF
1056 }
1057
1058 check_type(){
1059     log check_type "$@"
1060     headers=$1
1061     type=$2
1062     shift 2
1063     disable_safe "$type"
1064     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1065 }
1066
1067 check_struct(){
1068     log check_struct "$@"
1069     headers=$1
1070     struct=$2
1071     member=$3
1072     shift 3
1073     disable_safe "${struct}_${member}"
1074     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1075         enable_safe "${struct}_${member}"
1076 }
1077
1078 check_builtin(){
1079     log check_builtin "$@"
1080     name=$1
1081     headers=$2
1082     builtin=$3
1083     shift 3
1084     disable "$name"
1085     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1086 }
1087
1088 check_compile_assert(){
1089     log check_compile_assert "$@"
1090     name=$1
1091     headers=$2
1092     condition=$3
1093     shift 3
1094     disable "$name"
1095     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1096 }
1097
1098 require(){
1099     name="$1"
1100     headers="$2"
1101     func="$3"
1102     shift 3
1103     check_lib "$headers" $func "$@" || die "ERROR: $name not found"
1104 }
1105
1106 require_pkg_config(){
1107     pkg="$1"
1108     check_pkg_config "$@" || die "ERROR: $pkg not found"
1109     add_cflags    $(get_safe "${pkg}_cflags")
1110     add_extralibs $(get_safe "${pkg}_libs")
1111 }
1112
1113 hostcc_e(){
1114     eval printf '%s\\n' $HOSTCC_E
1115 }
1116
1117 hostcc_o(){
1118     eval printf '%s\\n' $HOSTCC_O
1119 }
1120
1121 check_host_cc(){
1122     log check_host_cc "$@"
1123     cat > $TMPC
1124     log_file $TMPC
1125     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1126 }
1127
1128 check_host_cpp(){
1129     log check_host_cpp "$@"
1130     cat > $TMPC
1131     log_file $TMPC
1132     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1133 }
1134
1135 check_host_cppflags(){
1136     log check_host_cppflags "$@"
1137     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1138 int x;
1139 EOF
1140 }
1141
1142 check_host_cflags(){
1143     log check_host_cflags "$@"
1144     set -- $($host_cflags_filter "$@")
1145     check_host_cc "$@" <<EOF && append host_cflags "$@"
1146 int x;
1147 EOF
1148 }
1149
1150 check_host_cpp_condition(){
1151     log check_host_cpp_condition "$@"
1152     header=$1
1153     condition=$2
1154     shift 2
1155     check_host_cpp "$@" <<EOF
1156 #include <$header>
1157 #if !($condition)
1158 #error "unsatisfied condition: $condition"
1159 #endif
1160 EOF
1161 }
1162
1163 apply(){
1164     file=$1
1165     shift
1166     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1167 }
1168
1169 cp_if_changed(){
1170     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1171     mkdir -p "$(dirname $2)"
1172     $cp_f "$1" "$2"
1173 }
1174
1175 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1176 # system-dependent things.
1177
1178 AVCODEC_COMPONENTS="
1179     bsfs
1180     decoders
1181     encoders
1182     hwaccels
1183     parsers
1184 "
1185
1186 AVDEVICE_COMPONENTS="
1187     indevs
1188     outdevs
1189 "
1190 AVFILTER_COMPONENTS="
1191     filters
1192 "
1193 AVFORMAT_COMPONENTS="
1194     demuxers
1195     muxers
1196     protocols
1197 "
1198
1199 AVRESAMPLE_COMPONENTS=""
1200 AVUTIL_COMPONENTS=""
1201
1202 COMPONENT_LIST="
1203     $AVCODEC_COMPONENTS
1204     $AVDEVICE_COMPONENTS
1205     $AVFILTER_COMPONENTS
1206     $AVFORMAT_COMPONENTS
1207     $AVRESAMPLE_COMPONENTS
1208     $AVUTIL_COMPONENTS
1209 "
1210
1211 EXAMPLE_LIST="
1212     avcodec_example
1213     filter_audio_example
1214     metadata_example
1215     output_example
1216     qsvdec_example
1217     transcode_aac_example
1218 "
1219
1220 HWACCEL_LIBRARY_NONFREE_LIST="
1221     cuda
1222     libnpp
1223 "
1224 HWACCEL_LIBRARY_LIST="
1225     $HWACCEL_LIBRARY_NONFREE_LIST
1226     d3d11va
1227     dxva2
1228     libmfx
1229     mmal
1230     nvenc
1231     omx
1232     vaapi
1233     vda
1234     vdpau
1235 "
1236
1237 EXTERNAL_LIBRARY_GPL_LIST="
1238     libcdio
1239     libx264
1240     libx265
1241     libxavs
1242     libxvid
1243 "
1244
1245 EXTERNAL_LIBRARY_NONFREE_LIST="
1246     libfaac
1247     libfdk_aac
1248     openssl
1249 "
1250
1251 EXTERNAL_LIBRARY_VERSION3_LIST="
1252     libopencore_amrnb
1253     libopencore_amrwb
1254     libvo_aacenc
1255     libvo_amrwbenc
1256 "
1257
1258 EXTERNAL_LIBRARY_LIST="
1259     $EXTERNAL_LIBRARY_GPL_LIST
1260     $EXTERNAL_LIBRARY_NONFREE_LIST
1261     $EXTERNAL_LIBRARY_VERSION3_LIST
1262     avisynth
1263     bzlib
1264     frei0r
1265     gnutls
1266     libbs2b
1267     libdc1394
1268     libdcadec
1269     libfontconfig
1270     libfreetype
1271     libgsm
1272     libhdcd
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     neon_clobber_test
1356     pic
1357     pod2man
1358     texi2html
1359     thumb
1360     valgrind_backtrace
1361     xmm_clobber_test
1362 "
1363
1364 THREADS_LIST="
1365     pthreads
1366     w32threads
1367 "
1368
1369 ATOMICS_LIST="
1370     atomics_gcc
1371     atomics_suncc
1372     atomics_win32
1373 "
1374
1375 ARCH_LIST="
1376     aarch64
1377     alpha
1378     arm
1379     avr32
1380     avr32_ap
1381     avr32_uc
1382     bfin
1383     ia64
1384     m68k
1385     mips
1386     mips64
1387     parisc
1388     ppc
1389     ppc64
1390     s390
1391     sh4
1392     sparc
1393     sparc64
1394     tilegx
1395     tilepro
1396     tomi
1397     x86
1398     x86_32
1399     x86_64
1400 "
1401
1402 ARCH_EXT_LIST_ARM="
1403     armv5te
1404     armv6
1405     armv6t2
1406     armv8
1407     neon
1408     vfp
1409     vfpv3
1410 "
1411
1412 ARCH_EXT_LIST_X86_SIMD="
1413     amd3dnow
1414     amd3dnowext
1415     avx
1416     avx2
1417     fma3
1418     fma4
1419     mmx
1420     mmxext
1421     sse
1422     sse2
1423     sse3
1424     sse4
1425     sse42
1426     ssse3
1427     xop
1428 "
1429
1430 ARCH_EXT_LIST_PPC="
1431     altivec
1432     dcbzl
1433     ldbrx
1434     power8
1435     ppc4xx
1436     vsx
1437 "
1438
1439 ARCH_EXT_LIST_X86="
1440     $ARCH_EXT_LIST_X86_SIMD
1441     cpunop
1442     i686
1443 "
1444
1445 ARCH_EXT_LIST_MIPS="
1446     loongson
1447     mips32r1
1448     mips64r1
1449     mips32r2
1450     mips64r2
1451     mips32r6
1452     mips64r6
1453 "
1454
1455 ARCH_EXT_LIST="
1456     $ARCH_EXT_LIST_ARM
1457     $ARCH_EXT_LIST_MIPS
1458     $ARCH_EXT_LIST_PPC
1459     $ARCH_EXT_LIST_X86
1460     vis
1461 "
1462
1463 ARCH_FEATURES="
1464     aligned_stack
1465     fast_64bit
1466     fast_clz
1467     fast_cmov
1468     local_aligned_8
1469     local_aligned_16
1470     local_aligned_32
1471     simd_align_16
1472     simd_align_32
1473 "
1474
1475 BUILTIN_LIST="
1476     atomic_cas_ptr
1477     machine_rw_barrier
1478     MemoryBarrier
1479     mm_empty
1480     rdtsc
1481     sem_timedwait
1482     sync_val_compare_and_swap
1483 "
1484 HAVE_LIST_CMDLINE="
1485     inline_asm
1486     symver
1487     yasm
1488 "
1489
1490 HAVE_LIST_PUB="
1491     bigendian
1492     fast_unaligned
1493 "
1494
1495 HEADERS_LIST="
1496     AVFoundation_AVFoundation_h
1497     alsa_asoundlib_h
1498     altivec_h
1499     arpa_inet_h
1500     cdio_paranoia_h
1501     cdio_paranoia_paranoia_h
1502     dispatch_dispatch_h
1503     dev_bktr_ioctl_bt848_h
1504     dev_bktr_ioctl_meteor_h
1505     dev_ic_bt8xx_h
1506     dev_video_bktr_ioctl_bt848_h
1507     dev_video_meteor_ioctl_meteor_h
1508     direct_h
1509     dlfcn_h
1510     d3d11_h
1511     dxva_h
1512     gsm_h
1513     io_h
1514     mach_mach_time_h
1515     machine_ioctl_bt848_h
1516     machine_ioctl_meteor_h
1517     malloc_h
1518     poll_h
1519     sndio_h
1520     soundcard_h
1521     stdatomic_h
1522     sys_mman_h
1523     sys_param_h
1524     sys_resource_h
1525     sys_select_h
1526     sys_soundcard_h
1527     sys_time_h
1528     sys_un_h
1529     sys_videoio_h
1530     unistd_h
1531     valgrind_valgrind_h
1532     windows_h
1533     winsock2_h
1534 "
1535
1536 INTRINSICS_LIST="
1537     intrinsics_neon
1538 "
1539
1540 MATH_FUNCS="
1541     atanf
1542     atan2f
1543     cbrtf
1544     cosf
1545     exp2
1546     exp2f
1547     expf
1548     isinf
1549     isnan
1550     ldexpf
1551     llrint
1552     llrintf
1553     log2
1554     log2f
1555     log10f
1556     lrint
1557     lrintf
1558     powf
1559     rint
1560     round
1561     roundf
1562     sinf
1563     trunc
1564     truncf
1565 "
1566
1567 SYSTEM_FUNCS="
1568     aligned_malloc
1569     clock_gettime
1570     closesocket
1571     CommandLineToArgvW
1572     CoTaskMemFree
1573     CryptGenRandom
1574     dlopen
1575     fcntl
1576     flt_lim
1577     fork
1578     getaddrinfo
1579     gethrtime
1580     getopt
1581     GetProcessAffinityMask
1582     GetProcessMemoryInfo
1583     GetProcessTimes
1584     getrusage
1585     GetSystemTimeAsFileTime
1586     gettimeofday
1587     gmtime_r
1588     inet_aton
1589     isatty
1590     jack_port_get_latency_range
1591     LoadLibrary
1592     localtime_r
1593     mach_absolute_time
1594     MapViewOfFile
1595     memalign
1596     mkstemp
1597     mmap
1598     mprotect
1599     nanosleep
1600     posix_memalign
1601     sched_getaffinity
1602     SetConsoleTextAttribute
1603     setmode
1604     setrlimit
1605     Sleep
1606     strerror_r
1607     sysconf
1608     sysctl
1609     usleep
1610     VirtualAlloc
1611 "
1612
1613 TOOLCHAIN_FEATURES="
1614     as_dn_directive
1615     as_fpu_directive
1616     as_func
1617     as_object_arch
1618     asm_mod_q
1619     attribute_may_alias
1620     attribute_packed
1621     ebp_available
1622     ebx_available
1623     gnu_as
1624     ibm_asm
1625     inline_asm_labels
1626     pragma_deprecated
1627     symver_asm_label
1628     symver_gnu_asm
1629     vfp_args
1630     xform_asm
1631     xmm_clobbers
1632 "
1633
1634 TYPES_LIST="
1635     CONDITION_VARIABLE_Ptr
1636     socklen_t
1637     struct_addrinfo
1638     struct_group_source_req
1639     struct_ip_mreq_source
1640     struct_ipv6_mreq
1641     struct_pollfd
1642     struct_rusage_ru_maxrss
1643     struct_sockaddr_in6
1644     struct_sockaddr_sa_len
1645     struct_sockaddr_storage
1646     struct_v4l2_frmivalenum_discrete
1647 "
1648
1649 HAVE_LIST="
1650     $ARCH_EXT_LIST
1651     $(add_suffix _external $ARCH_EXT_LIST)
1652     $(add_suffix _inline   $ARCH_EXT_LIST)
1653     $ARCH_FEATURES
1654     $BUILTIN_LIST
1655     $HAVE_LIST_CMDLINE
1656     $HAVE_LIST_PUB
1657     $HEADERS_LIST
1658     $INTRINSICS_LIST
1659     $MATH_FUNCS
1660     $SYSTEM_FUNCS
1661     $THREADS_LIST
1662     $TOOLCHAIN_FEATURES
1663     $TYPES_LIST
1664     dos_paths
1665     dxva2_lib
1666     libc_msvcrt
1667     libdc1394_1
1668     libdc1394_2
1669     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1670     sdl
1671     section_data_rel_ro
1672     threads
1673     vaapi_drm
1674     vaapi_x11
1675     vdpau_x11
1676     xlib
1677 "
1678
1679 # options emitted with CONFIG_ prefix but not available on the command line
1680 CONFIG_EXTRA="
1681     aandcttables
1682     ac3dsp
1683     audio_frame_queue
1684     audiodsp
1685     blockdsp
1686     bswapdsp
1687     cabac
1688     dirac_parse
1689     dvprofile
1690     faandct
1691     faanidct
1692     fdctdsp
1693     flacdsp
1694     fmtconvert
1695     g722dsp
1696     gcrypt
1697     gmp
1698     golomb
1699     gplv3
1700     h263dsp
1701     h264chroma
1702     h264dsp
1703     h264parse
1704     h264pred
1705     h264qpel
1706     hpeldsp
1707     huffman
1708     huffyuvdsp
1709     huffyuvencdsp
1710     idctdsp
1711     iirfilter
1712     imdct15
1713     intrax8
1714     iso_media
1715     ividsp
1716     jpegtables
1717     libx262
1718     lgplv3
1719     lpc
1720     lzf
1721     me_cmp
1722     mpeg_er
1723     mpegaudio
1724     mpegaudiodsp
1725     mpegvideo
1726     mpegvideoenc
1727     mss34dsp
1728     pixblockdsp
1729     qpeldsp
1730     qsv
1731     qsvdec
1732     qsvenc
1733     rangecoder
1734     riffdec
1735     riffenc
1736     rtpdec
1737     rtpenc_chain
1738     rv34dsp
1739     sinewin
1740     snappy
1741     srtp
1742     startcode
1743     texturedsp
1744     texturedspenc
1745     tpeldsp
1746     vaapi_encode
1747     vc1dsp
1748     videodsp
1749     vp3dsp
1750     vp56dsp
1751     vp8dsp
1752     wma_freqs
1753     wmv2dsp
1754 "
1755
1756 CMDLINE_SELECT="
1757     $ARCH_EXT_LIST
1758     $CONFIG_LIST
1759     $HAVE_LIST_CMDLINE
1760     $THREADS_LIST
1761     asm
1762     cross_compile
1763     debug
1764     extra_warnings
1765     logging
1766     lto
1767     optimizations
1768     rpath
1769 "
1770
1771 PATHS_LIST="
1772     bindir
1773     datadir
1774     docdir
1775     incdir
1776     libdir
1777     mandir
1778     prefix
1779     shlibdir
1780 "
1781
1782 CMDLINE_SET="
1783     $PATHS_LIST
1784     ar
1785     arch
1786     as
1787     build_suffix
1788     cc
1789     objcc
1790     cpu
1791     cross_prefix
1792     custom_allocator
1793     dep_cc
1794     env
1795     extra_version
1796     host_cc
1797     host_cflags
1798     host_ld
1799     host_ldflags
1800     host_libs
1801     host_os
1802     ld
1803     logfile
1804     malloc_prefix
1805     nm
1806     optflags
1807     pkg_config
1808     pkg_config_flags
1809     random_seed
1810     samples
1811     sysinclude
1812     sysroot
1813     target_exec
1814     target_os
1815     target_path
1816     target_samples
1817     toolchain
1818 "
1819
1820 CMDLINE_APPEND="
1821     extra_cflags
1822     extra_objcflags
1823     host_cppflags
1824 "
1825
1826 # code dependency declarations
1827
1828 # architecture extensions
1829
1830 armv5te_deps="arm"
1831 armv6_deps="arm"
1832 armv6t2_deps="arm"
1833 armv8_deps="aarch64"
1834 neon_deps_any="aarch64 arm"
1835 intrinsics_neon_deps="neon"
1836 vfp_deps_any="aarch64 arm"
1837 vfpv3_deps="vfp"
1838
1839 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1840
1841 altivec_deps="ppc"
1842 ppc4xx_deps="ppc"
1843 vsx_deps="altivec"
1844 power8_deps="vsx"
1845
1846 cpunop_deps="i686"
1847 x86_64_select="i686"
1848 x86_64_suggest="fast_cmov"
1849
1850 amd3dnow_deps="mmx"
1851 amd3dnowext_deps="amd3dnow"
1852 i686_deps="x86"
1853 mmx_deps="x86"
1854 mmxext_deps="mmx"
1855 sse_deps="mmxext"
1856 sse2_deps="sse"
1857 sse3_deps="sse2"
1858 ssse3_deps="sse3"
1859 sse4_deps="ssse3"
1860 sse42_deps="sse4"
1861 avx_deps="sse42"
1862 xop_deps="avx"
1863 fma3_deps="avx"
1864 fma4_deps="avx"
1865 avx2_deps="avx"
1866
1867 mmx_external_deps="yasm"
1868 mmx_inline_deps="inline_asm"
1869 mmx_suggest="mmx_external mmx_inline"
1870
1871 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1872     eval dep=\$${ext}_deps
1873     eval ${ext}_external_deps='"${dep}_external"'
1874     eval ${ext}_inline_deps='"${dep}_inline"'
1875     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1876 done
1877
1878 aligned_stack_if_any="aarch64 ppc x86"
1879 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1880 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1881 fast_unaligned_if_any="aarch64 ppc x86"
1882 simd_align_16_if_any="altivec neon sse"
1883 simd_align_32_if_any="avx"
1884
1885 # system capabilities
1886 symver_if_any="symver_asm_label symver_gnu_asm"
1887 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1888
1889 # threading support
1890 atomics_gcc_if="sync_val_compare_and_swap"
1891 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1892 atomics_win32_if="MemoryBarrier"
1893 atomics_native_if_any="$ATOMICS_LIST"
1894 w32threads_deps="atomics_native"
1895 threads_if_any="$THREADS_LIST"
1896
1897 # subsystems
1898 dct_select="rdft"
1899 dirac_parse_select="golomb"
1900 error_resilience_select="me_cmp"
1901 faandct_deps="faan fdctdsp"
1902 faanidct_deps="faan idctdsp"
1903 h264dsp_select="startcode"
1904 intrax8_select="blockdsp idctdsp"
1905 mdct_select="fft"
1906 rdft_select="fft"
1907 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1908 mpeg_er_select="error_resilience"
1909 mpegaudio_select="mpegaudiodsp"
1910 mpegaudiodsp_select="dct"
1911 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1912 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1913 vc1dsp_select="h264chroma qpeldsp startcode"
1914
1915 # decoders / encoders
1916 aac_decoder_select="imdct15 mdct sinewin"
1917 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1918 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1919 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1920 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1921 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1922 adpcm_g722_decoder_select="g722dsp"
1923 adpcm_g722_encoder_select="g722dsp"
1924 aic_decoder_select="golomb idctdsp"
1925 alac_encoder_select="lpc"
1926 als_decoder_select="bswapdsp"
1927 amrnb_decoder_select="lsp"
1928 amrwb_decoder_select="lsp"
1929 amv_decoder_select="sp5x_decoder"
1930 ape_decoder_select="bswapdsp"
1931 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1932 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1933 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1934 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1935 atrac1_decoder_select="mdct sinewin"
1936 atrac3_decoder_select="mdct"
1937 atrac3p_decoder_select="mdct sinewin"
1938 bink_decoder_select="blockdsp hpeldsp"
1939 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1940 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1941 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1942 cllc_decoder_select="bswapdsp"
1943 comfortnoise_encoder_select="lpc"
1944 cook_decoder_select="audiodsp mdct sinewin"
1945 cscd_decoder_select="lzo"
1946 cscd_decoder_suggest="zlib"
1947 dca_decoder_select="fmtconvert mdct"
1948 dds_decoder_select="texturedsp"
1949 dnxhd_decoder_select="blockdsp idctdsp"
1950 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1951 dvvideo_decoder_select="dvprofile idctdsp"
1952 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1953 dxa_decoder_deps="zlib"
1954 dxv_decoder_select="lzf texturedsp"
1955 eac3_decoder_select="ac3_decoder"
1956 eac3_encoder_select="ac3_encoder"
1957 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1958 eatgq_decoder_select="aandcttables idctdsp"
1959 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
1960 exr_decoder_deps="zlib"
1961 ffv1_decoder_select="golomb rangecoder"
1962 ffv1_encoder_select="rangecoder"
1963 ffvhuff_decoder_select="huffyuv_decoder"
1964 ffvhuff_encoder_select="huffyuv_encoder"
1965 fic_decoder_select="golomb"
1966 flac_decoder_select="flacdsp golomb"
1967 flac_encoder_select="bswapdsp flacdsp golomb lpc"
1968 flashsv_decoder_deps="zlib"
1969 flashsv_encoder_deps="zlib"
1970 flashsv2_decoder_deps="zlib"
1971 flv_decoder_select="h263_decoder"
1972 flv_encoder_select="h263_encoder"
1973 fourxm_decoder_select="blockdsp bswapdsp"
1974 fraps_decoder_select="bswapdsp huffman"
1975 g2m_decoder_deps="zlib"
1976 g2m_decoder_select="blockdsp idctdsp jpegtables"
1977 h261_decoder_select="mpeg_er mpegvideo"
1978 h261_encoder_select="aandcttables mpegvideoenc"
1979 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1980 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1981 h263i_decoder_select="h263_decoder"
1982 h263p_encoder_select="h263_encoder"
1983 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
1984 h264_decoder_suggest="error_resilience"
1985 hap_decoder_select="snappy texturedsp"
1986 hap_encoder_deps="libsnappy"
1987 hap_encoder_select="texturedspenc"
1988 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1989 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1990 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1991 iac_decoder_select="imc_decoder"
1992 imc_decoder_select="bswapdsp fft mdct sinewin"
1993 indeo3_decoder_select="hpeldsp"
1994 indeo4_decoder_select="ividsp"
1995 indeo5_decoder_select="ividsp"
1996 interplay_video_decoder_select="hpeldsp"
1997 jpegls_decoder_select="golomb mjpeg_decoder"
1998 jpegls_encoder_select="golomb"
1999 jv_decoder_select="blockdsp"
2000 lagarith_decoder_select="huffyuvdsp"
2001 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2002 loco_decoder_select="golomb"
2003 magicyuv_decoder_select="huffyuvdsp"
2004 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2005 metasound_decoder_select="lsp mdct sinewin"
2006 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2007 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2008 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2009 mjpegb_decoder_select="mjpeg_decoder"
2010 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2011 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2012 mlp_decoder_select="mlp_parser"
2013 motionpixels_decoder_select="bswapdsp"
2014 mp1_decoder_select="mpegaudio"
2015 mp1float_decoder_select="mpegaudio"
2016 mp2_decoder_select="mpegaudio"
2017 mp2float_decoder_select="mpegaudio"
2018 mp3_decoder_select="mpegaudio"
2019 mp3adu_decoder_select="mpegaudio"
2020 mp3adufloat_decoder_select="mpegaudio"
2021 mp3float_decoder_select="mpegaudio"
2022 mp3on4_decoder_select="mpegaudio"
2023 mp3on4float_decoder_select="mpegaudio"
2024 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2025 mpc8_decoder_select="mpegaudiodsp"
2026 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2027 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2028 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2029 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2030 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2031 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2032 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2033 mpeg4_encoder_select="h263_encoder"
2034 msa1_decoder_select="mss34dsp"
2035 msmpeg4v1_decoder_select="h263_decoder"
2036 msmpeg4v2_decoder_select="h263_decoder"
2037 msmpeg4v2_encoder_select="h263_encoder"
2038 msmpeg4v3_decoder_select="h263_decoder"
2039 msmpeg4v3_encoder_select="h263_encoder"
2040 mss2_decoder_select="error_resilience mpeg_er mpegvideo vc1_decoder"
2041 mts2_decoder_select="mss34dsp"
2042 mxpeg_decoder_select="mjpeg_decoder"
2043 nellymoser_decoder_select="mdct sinewin"
2044 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2045 nuv_decoder_select="idctdsp lzo"
2046 on2avc_decoder_select="mdct"
2047 opus_decoder_deps="avresample"
2048 opus_decoder_select="imdct15"
2049 png_decoder_deps="zlib"
2050 png_encoder_deps="zlib"
2051 png_encoder_select="huffyuvencdsp"
2052 prores_decoder_select="idctdsp"
2053 prores_encoder_select="fdctdsp"
2054 qcelp_decoder_select="lsp"
2055 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2056 ra_144_encoder_select="audio_frame_queue lpc"
2057 ralf_decoder_select="golomb"
2058 rscc_decoder_deps="zlib"
2059 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2060 rv10_encoder_select="h263_encoder"
2061 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2062 rv20_encoder_select="h263_encoder"
2063 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2064 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2065 screenpresso_decoder_deps="zlib"
2066 shorten_decoder_select="golomb"
2067 sipr_decoder_select="lsp"
2068 sp5x_decoder_select="mjpeg_decoder"
2069 svq1_decoder_select="hpeldsp"
2070 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2071 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2072 svq3_decoder_suggest="zlib"
2073 tak_decoder_select="audiodsp"
2074 tdsc_decoder_deps="zlib"
2075 tdsc_decoder_select="mjpeg_decoder"
2076 theora_decoder_select="vp3_decoder"
2077 thp_decoder_select="mjpeg_decoder"
2078 tiff_decoder_suggest="zlib"
2079 tiff_encoder_suggest="zlib"
2080 truehd_decoder_select="mlp_decoder"
2081 truemotion2_decoder_select="bswapdsp"
2082 truespeech_decoder_select="bswapdsp"
2083 tscc_decoder_deps="zlib"
2084 txd_decoder_select="texturedsp"
2085 twinvq_decoder_select="mdct lsp sinewin"
2086 utvideo_decoder_select="bswapdsp"
2087 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2088 vble_decoder_select="huffyuvdsp"
2089 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2090 vc1image_decoder_select="vc1_decoder"
2091 vorbis_decoder_select="mdct"
2092 vorbis_encoder_select="mdct"
2093 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2094 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2095 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2096 vp6a_decoder_select="vp6_decoder"
2097 vp6f_decoder_select="vp6_decoder"
2098 vp7_decoder_select="h264pred videodsp vp8dsp"
2099 vp8_decoder_select="h264pred videodsp vp8dsp"
2100 vp9_decoder_select="videodsp"
2101 webp_decoder_select="vp8_decoder"
2102 wmapro_decoder_select="mdct sinewin wma_freqs"
2103 wmav1_decoder_select="mdct sinewin wma_freqs"
2104 wmav1_encoder_select="mdct sinewin wma_freqs"
2105 wmav2_decoder_select="mdct sinewin wma_freqs"
2106 wmav2_encoder_select="mdct sinewin wma_freqs"
2107 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2108 wmv1_decoder_select="h263_decoder"
2109 wmv1_encoder_select="h263_encoder"
2110 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2111 wmv2_encoder_select="h263_encoder wmv2dsp"
2112 wmv3_decoder_select="vc1_decoder"
2113 wmv3image_decoder_select="wmv3_decoder"
2114 zerocodec_decoder_deps="zlib"
2115 zlib_decoder_deps="zlib"
2116 zlib_encoder_deps="zlib"
2117 zmbv_decoder_deps="zlib"
2118 zmbv_encoder_deps="zlib"
2119
2120 # hardware accelerators
2121 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2122 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2123 vaapi_deps="va_va_h"
2124 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2125 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2126 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2127
2128 h263_vaapi_hwaccel_deps="vaapi"
2129 h263_vaapi_hwaccel_select="h263_decoder"
2130 h264_d3d11va_hwaccel_deps="d3d11va"
2131 h264_d3d11va_hwaccel_select="h264_decoder"
2132 h264_dxva2_hwaccel_deps="dxva2"
2133 h264_dxva2_hwaccel_select="h264_decoder"
2134 h264_mmal_decoder_deps="mmal"
2135 h264_mmal_decoder_select="mmal"
2136 h264_mmal_hwaccel_deps="mmal"
2137 h264_omx_encoder_deps="omx"
2138 h264_qsv_hwaccel_deps="libmfx"
2139 h264_vaapi_hwaccel_deps="vaapi"
2140 h264_vaapi_hwaccel_select="h264_decoder"
2141 h264_vda_hwaccel_deps="vda"
2142 h264_vda_hwaccel_select="h264_decoder"
2143 h264_vda_old_hwaccel_deps="vda"
2144 h264_vda_old_hwaccel_select="h264_decoder"
2145 h264_vdpau_hwaccel_deps="vdpau"
2146 h264_vdpau_hwaccel_select="h264_decoder"
2147 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2148 hevc_d3d11va_hwaccel_select="hevc_decoder"
2149 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2150 hevc_dxva2_hwaccel_select="hevc_decoder"
2151 hevc_qsv_hwaccel_deps="libmfx"
2152 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2153 hevc_vdpau_hwaccel_select="hevc_decoder"
2154 mpeg1_vdpau_hwaccel_deps="vdpau"
2155 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2156 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2157 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2158 mpeg2_dxva2_hwaccel_deps="dxva2"
2159 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2160 mpeg2_mmal_decoder_deps="mmal"
2161 mpeg2_mmal_decoder_select="mmal"
2162 mpeg2_mmal_hwaccel_deps="mmal"
2163 mpeg2_qsv_hwaccel_deps="libmfx"
2164 mpeg2_vaapi_hwaccel_deps="vaapi"
2165 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2166 mpeg2_vdpau_hwaccel_deps="vdpau"
2167 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2168 mpeg4_omx_encoder_deps="omx"
2169 mpeg4_vaapi_hwaccel_deps="vaapi"
2170 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2171 mpeg4_vdpau_hwaccel_deps="vdpau"
2172 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2173 vc1_d3d11va_hwaccel_deps="d3d11va"
2174 vc1_d3d11va_hwaccel_select="vc1_decoder"
2175 vc1_dxva2_hwaccel_deps="dxva2"
2176 vc1_dxva2_hwaccel_select="vc1_decoder"
2177 vc1_mmal_decoder_deps="mmal"
2178 vc1_mmal_decoder_select="mmal"
2179 vc1_mmal_hwaccel_deps="mmal"
2180 vc1_vaapi_hwaccel_deps="vaapi"
2181 vc1_vaapi_hwaccel_select="vc1_decoder"
2182 vc1_vdpau_hwaccel_deps="vdpau"
2183 vc1_vdpau_hwaccel_select="vc1_decoder"
2184 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2185 vp8_vaapi_hwaccel_select="vp8_decoder"
2186 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2187 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2188 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2189 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2190
2191 # hardware-accelerated codecs
2192 nvenc_deps_any="dlopen LoadLibrary"
2193 nvenc_extralibs='$ldl'
2194 omx_deps="dlopen pthreads"
2195 omx_extralibs='$ldl'
2196 qsvdec_select="qsv"
2197 qsvenc_select="qsv"
2198 vaapi_encode_deps="vaapi"
2199
2200 hwupload_cuda_filter_deps="cuda"
2201 scale_npp_filter_deps="cuda libnpp"
2202
2203 h264_nvenc_encoder_deps="nvenc"
2204 h264_qsv_decoder_deps="libmfx"
2205 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2206 h264_qsv_encoder_deps="libmfx"
2207 h264_qsv_encoder_select="qsvenc"
2208 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2209 h264_vaapi_encoder_select="vaapi_encode golomb"
2210
2211 hevc_nvenc_encoder_deps="nvenc"
2212 hevc_qsv_decoder_deps="libmfx"
2213 hevc_qsv_encoder_deps="libmfx"
2214 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2215 hevc_qsv_encoder_select="qsvenc"
2216 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2217 hevc_vaapi_encoder_select="vaapi_encode golomb"
2218 mpeg2_qsv_decoder_deps="libmfx"
2219 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2220 mpeg2_qsv_encoder_deps="libmfx"
2221 mpeg2_qsv_encoder_select="qsvenc"
2222
2223 nvenc_h264_encoder_deps="nvenc"
2224 nvenc_hevc_encoder_deps="nvenc"
2225
2226 # parsers
2227 h264_parser_select="golomb h264dsp h264parse"
2228 hevc_parser_select="golomb"
2229 mpegvideo_parser_select="mpegvideo"
2230 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2231 vc1_parser_select="vc1dsp"
2232
2233 # bitstream_filters
2234 mjpeg2jpeg_bsf_select="jpegtables"
2235
2236 # external libraries
2237 libdcadec_decoder_deps="libdcadec"
2238 libfaac_encoder_deps="libfaac"
2239 libfaac_encoder_select="audio_frame_queue"
2240 libfdk_aac_decoder_deps="libfdk_aac"
2241 libfdk_aac_encoder_deps="libfdk_aac"
2242 libfdk_aac_encoder_select="audio_frame_queue"
2243 libgsm_decoder_deps="libgsm"
2244 libgsm_encoder_deps="libgsm"
2245 libgsm_ms_decoder_deps="libgsm"
2246 libgsm_ms_encoder_deps="libgsm"
2247 libilbc_decoder_deps="libilbc"
2248 libilbc_encoder_deps="libilbc"
2249 libkvazaar_encoder_deps="libkvazaar"
2250 libmp3lame_encoder_deps="libmp3lame"
2251 libmp3lame_encoder_select="audio_frame_queue"
2252 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2253 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2254 libopencore_amrnb_encoder_select="audio_frame_queue"
2255 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2256 libopenh264_decoder_deps="libopenh264"
2257 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2258 libopenh264_encoder_deps="libopenh264"
2259 libopenjpeg_decoder_deps="libopenjpeg"
2260 libopenjpeg_encoder_deps="libopenjpeg"
2261 libopus_decoder_deps="libopus"
2262 libopus_encoder_deps="libopus"
2263 libopus_encoder_select="audio_frame_queue"
2264 libschroedinger_decoder_deps="libschroedinger"
2265 libschroedinger_encoder_deps="libschroedinger"
2266 libspeex_decoder_deps="libspeex"
2267 libspeex_encoder_deps="libspeex"
2268 libspeex_encoder_select="audio_frame_queue"
2269 libtheora_encoder_deps="libtheora"
2270 libtwolame_encoder_deps="libtwolame"
2271 libvo_aacenc_encoder_deps="libvo_aacenc"
2272 libvo_aacenc_encoder_select="audio_frame_queue"
2273 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2274 libvorbis_encoder_deps="libvorbis"
2275 libvorbis_encoder_select="audio_frame_queue"
2276 libvpx_vp8_decoder_deps="libvpx"
2277 libvpx_vp8_encoder_deps="libvpx"
2278 libvpx_vp9_decoder_deps="libvpx"
2279 libvpx_vp9_encoder_deps="libvpx"
2280 libwavpack_encoder_deps="libwavpack"
2281 libwebp_encoder_deps="libwebp"
2282 libx262_encoder_deps="libx262"
2283 libx264_encoder_deps="libx264"
2284 libx265_encoder_deps="libx265"
2285 libxavs_encoder_deps="libxavs"
2286 libxvid_encoder_deps="libxvid"
2287
2288 # demuxers / muxers
2289 ac3_demuxer_select="ac3_parser"
2290 asf_demuxer_select="riffdec"
2291 asf_muxer_select="riffenc"
2292 asf_stream_muxer_select="asf_muxer"
2293 avi_demuxer_select="iso_media riffdec"
2294 avi_muxer_select="riffenc"
2295 avisynth_demuxer_deps="avisynth"
2296 avisynth_demuxer_select="riffdec"
2297 caf_demuxer_select="iso_media riffdec"
2298 dash_muxer_select="mp4_muxer"
2299 dirac_demuxer_select="dirac_parser"
2300 dv_demuxer_select="dvprofile"
2301 dv_muxer_select="dvprofile"
2302 dxa_demuxer_select="riffdec"
2303 eac3_demuxer_select="ac3_parser"
2304 f4v_muxer_select="mov_muxer"
2305 flac_demuxer_select="flac_parser"
2306 hds_muxer_select="flv_muxer"
2307 hls_muxer_select="mpegts_muxer"
2308 ipod_muxer_select="mov_muxer"
2309 ismv_muxer_select="mov_muxer"
2310 matroska_audio_muxer_select="matroska_muxer"
2311 matroska_demuxer_select="iso_media riffdec"
2312 matroska_demuxer_suggest="bzlib lzo zlib"
2313 matroska_muxer_select="iso_media riffenc"
2314 mmf_muxer_select="riffenc"
2315 mov_demuxer_select="iso_media riffdec"
2316 mov_demuxer_suggest="zlib"
2317 mov_muxer_select="iso_media riffenc rtpenc_chain"
2318 mp3_demuxer_select="mpegaudio_parser"
2319 mp4_muxer_select="mov_muxer"
2320 mpegts_demuxer_select="iso_media"
2321 mpegts_muxer_select="adts_muxer latm_muxer"
2322 mpegtsraw_demuxer_select="mpegts_demuxer"
2323 mxf_d10_muxer_select="mxf_muxer"
2324 nut_muxer_select="riffenc"
2325 nuv_demuxer_select="riffdec"
2326 oga_muxer_select="ogg_muxer"
2327 ogg_demuxer_select="dirac_parse"
2328 opus_muxer_select="ogg_muxer"
2329 psp_muxer_select="mov_muxer"
2330 rtp_demuxer_select="sdp_demuxer"
2331 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2332 rtsp_demuxer_select="http_protocol rtpdec"
2333 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2334 sap_demuxer_select="sdp_demuxer"
2335 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2336 sdp_demuxer_select="rtpdec"
2337 smoothstreaming_muxer_select="ismv_muxer"
2338 spdif_muxer_select="aac_parser"
2339 spx_muxer_select="ogg_muxer"
2340 swf_demuxer_suggest="zlib"
2341 tak_demuxer_select="tak_parser"
2342 tg2_muxer_select="mov_muxer"
2343 tgp_muxer_select="mov_muxer"
2344 w64_demuxer_select="wav_demuxer"
2345 wav_demuxer_select="riffdec"
2346 wav_muxer_select="riffenc"
2347 webm_muxer_select="iso_media riffenc"
2348 webm_muxer_suggest="libopus_encoder libvorbis_encoder libvpx_vp8_encoder libvpx_vp9_encoder"
2349 wtv_demuxer_select="mpegts_demuxer riffdec"
2350 xmv_demuxer_select="riffdec"
2351 xwma_demuxer_select="riffdec"
2352
2353 # indevs / outdevs
2354 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2355 alsa_outdev_deps="alsa_asoundlib_h"
2356 avfoundation_indev_deps="AVFoundation_AVFoundation_h"
2357 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2358 dv1394_indev_deps="dv1394"
2359 dv1394_indev_select="dv_demuxer"
2360 fbdev_indev_deps="linux_fb_h"
2361 jack_indev_deps="jack_jack_h"
2362 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2363 libcdio_indev_deps="libcdio"
2364 libdc1394_indev_deps="libdc1394"
2365 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2366 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2367 pulse_indev_deps="libpulse"
2368 sndio_indev_deps="sndio_h"
2369 sndio_outdev_deps="sndio_h"
2370 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2371 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2372 vfwcap_indev_extralibs="-lavicap32"
2373 xcbgrab_indev_deps="libxcb"
2374
2375 # protocols
2376 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2377 ffrtmpcrypt_protocol_deps_any="gcrypt gmp openssl"
2378 ffrtmpcrypt_protocol_select="tcp_protocol"
2379 ffrtmphttp_protocol_deps="!librtmp_protocol"
2380 ffrtmphttp_protocol_select="http_protocol"
2381 gopher_protocol_select="network"
2382 http_protocol_select="tcp_protocol"
2383 httpproxy_protocol_select="tcp_protocol"
2384 https_protocol_select="tls_protocol"
2385 icecast_protocol_select="http_protocol"
2386 librtmp_protocol_deps="librtmp"
2387 librtmpe_protocol_deps="librtmp"
2388 librtmps_protocol_deps="librtmp"
2389 librtmpt_protocol_deps="librtmp"
2390 librtmpte_protocol_deps="librtmp"
2391 mmsh_protocol_select="http_protocol"
2392 mmst_protocol_select="network"
2393 rtmp_protocol_deps="!librtmp_protocol"
2394 rtmp_protocol_select="tcp_protocol"
2395 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2396 rtmps_protocol_deps="!librtmp_protocol"
2397 rtmps_protocol_select="tls_protocol"
2398 rtmpt_protocol_select="ffrtmphttp_protocol"
2399 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2400 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2401 rtp_protocol_select="udp_protocol"
2402 sctp_protocol_deps="struct_sctp_event_subscribe"
2403 sctp_protocol_select="network"
2404 srtp_protocol_select="rtp_protocol srtp"
2405 tcp_protocol_select="network"
2406 tls_gnutls_protocol_deps="gnutls"
2407 tls_gnutls_protocol_select="tcp_protocol"
2408 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2409 tls_openssl_protocol_select="tcp_protocol"
2410 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2411 udp_protocol_select="network"
2412 unix_protocol_deps="sys_un_h"
2413 unix_protocol_select="network"
2414
2415 # filters
2416 blackframe_filter_deps="gpl"
2417 boxblur_filter_deps="gpl"
2418 bs2b_filter_deps="libbs2b"
2419 cropdetect_filter_deps="gpl"
2420 deinterlace_qsv_filter_deps="libmfx"
2421 delogo_filter_deps="gpl"
2422 drawtext_filter_deps="libfreetype"
2423 frei0r_filter_deps="frei0r dlopen"
2424 frei0r_filter_extralibs='$ldl'
2425 frei0r_src_filter_deps="frei0r dlopen"
2426 frei0r_src_filter_extralibs='$ldl'
2427 hdcd_filter_deps="libhdcd"
2428 hqdn3d_filter_deps="gpl"
2429 interlace_filter_deps="gpl"
2430 ocv_filter_deps="libopencv"
2431 resample_filter_deps="avresample"
2432 scale_filter_deps="swscale"
2433 scale_qsv_filter_deps="libmfx"
2434 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2435
2436 # examples
2437 avcodec_example_deps="avcodec avutil"
2438 filter_audio_example_deps="avfilter avutil"
2439 metadata_example_deps="avformat avutil"
2440 output_example_deps="avcodec avformat avutil swscale"
2441 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder vaapi_x11"
2442 transcode_aac_example_deps="avcodec avformat avresample"
2443
2444 # libraries, in linking order
2445 avcodec_deps="avutil"
2446 avdevice_deps="avformat avcodec avutil"
2447 avfilter_deps="avutil"
2448 avformat_deps="avcodec avutil"
2449 avresample_deps="avutil"
2450 swscale_deps="avutil"
2451
2452 # programs
2453 avconv_deps="avcodec avfilter avformat avresample swscale"
2454 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2455                fps_filter null_filter resample_filter scale_filter
2456                trim_filter"
2457 avplay_deps="avcodec avfilter avformat avresample sdl"
2458 avplay_libs='$sdl_libs'
2459 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2460 avprobe_deps="avcodec avformat"
2461
2462 # documentation
2463 pod2man_deps="doc"
2464 texi2html_deps="doc"
2465
2466 # default parameters
2467
2468 logfile="config.log"
2469
2470 # installation paths
2471 prefix_default="/usr/local"
2472 bindir_default='${prefix}/bin'
2473 datadir_default='${prefix}/share/avconv'
2474 docdir_default='${prefix}/share/doc/libav'
2475 incdir_default='${prefix}/include'
2476 libdir_default='${prefix}/lib'
2477 mandir_default='${prefix}/share/man'
2478 shlibdir_default="$libdir_default"
2479
2480 # toolchain
2481 ar_default="ar"
2482 cc_default="gcc"
2483 host_cc_default="gcc"
2484 cp_f="cp -f"
2485 ln_s="ln -s -f"
2486 nm_default="nm -g"
2487 objformat="elf"
2488 pkg_config_default=pkg-config
2489 ranlib="ranlib"
2490 strip="strip"
2491 version_script='--version-script'
2492 yasmexe="yasm"
2493
2494 # machine
2495 arch_default=$(uname -m)
2496 cpu="generic"
2497 intrinsics="none"
2498
2499 # OS
2500 target_os_default=$(tolower $(uname -s))
2501 host_os=$target_os_default
2502
2503 # configurable options
2504 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2505
2506 enable asm
2507 enable debug
2508 enable doc
2509 enable faan faandct faanidct
2510 enable optimizations
2511 enable safe_bitstream_reader
2512 enable static
2513 enable swscale_alpha
2514 enable valgrind_backtrace
2515
2516 # By default, enable only those hwaccels that have no external dependencies.
2517 enable d3d11va dxva2 vda vdpau
2518
2519 # build settings
2520 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2521 LIBPREF="lib"
2522 LIBSUF=".a"
2523 FULLNAME='$(NAME)$(BUILDSUF)'
2524 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2525 SLIBPREF="lib"
2526 SLIBSUF=".so"
2527 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2528 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2529 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2530 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2531 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2532 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2533 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2534
2535 asflags_filter=echo
2536 cflags_filter=echo
2537 ldflags_filter=echo
2538
2539 AS_C='-c'
2540 AS_O='-o $@'
2541 CC_C='-c'
2542 CC_E='-E -o $@'
2543 CC_O='-o $@'
2544 OBJCC_C='-c'
2545 OBJCC_E='-E -o $@'
2546 OBJCC_O='-o $@'
2547 LD_O='-o $@'
2548 LD_LIB='-l%'
2549 LD_PATH='-L'
2550 HOSTCC_C='-c'
2551 HOSTCC_E='-E -o $@'
2552 HOSTCC_O='-o $@'
2553 HOSTLD_O='-o $@'
2554
2555 host_libs='-lm'
2556 host_cflags_filter=echo
2557 host_ldflags_filter=echo
2558
2559 target_path='$(CURDIR)'
2560
2561 # since the object filename is not given with the -MM flag, the compiler
2562 # is only able to print the basename, and we must add the path ourselves
2563 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2564 DEPFLAGS='-MM'
2565
2566 # find source path
2567 if test -f configure; then
2568     source_path=.
2569 else
2570     source_path=$(cd $(dirname "$0"); pwd)
2571     echo "$source_path" | grep -q '[[:blank:]]' &&
2572         die "Out of tree builds are impossible with whitespace in source path."
2573     test -e "$source_path/config.h" &&
2574         die "Out of tree builds are impossible with config.h in source dir."
2575 fi
2576
2577 for v in "$@"; do
2578     r=${v#*=}
2579     l=${v%"$r"}
2580     r=$(sh_quote "$r")
2581     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2582 done
2583
2584 find_things(){
2585     thing=$1
2586     pattern=$2
2587     file=$source_path/$3
2588     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2589 }
2590
2591 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2592 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2593 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2594 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2595 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2596 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2597 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2598 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2599 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2600
2601 find_things_extern(){
2602     thing=$1
2603     pattern=$2
2604     file=$source_path/$3
2605     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2606 }
2607
2608 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2609 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2610
2611 ALL_COMPONENTS="
2612     $BSF_LIST
2613     $DECODER_LIST
2614     $DEMUXER_LIST
2615     $ENCODER_LIST
2616     $FILTER_LIST
2617     $HWACCEL_LIST
2618     $INDEV_LIST
2619     $MUXER_LIST
2620     $OUTDEV_LIST
2621     $PARSER_LIST
2622     $PROTOCOL_LIST
2623 "
2624
2625 for n in $COMPONENT_LIST; do
2626     v=$(toupper ${n%s})_LIST
2627     eval enable \$$v
2628     eval ${n}_if_any="\$$v"
2629 done
2630
2631 enable $ARCH_EXT_LIST
2632
2633 die_unknown(){
2634     echo "Unknown option \"$1\"."
2635     echo "See $0 --help for available options."
2636     exit 1
2637 }
2638
2639 print_3_columns() {
2640     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2641 }
2642
2643 show_list() {
2644     suffix=_$1
2645     shift
2646     echo $* | sed s/$suffix//g | print_3_columns
2647     exit 0
2648 }
2649
2650 rand_list(){
2651     IFS=', '
2652     set -- $*
2653     unset IFS
2654     for thing; do
2655         comp=${thing%:*}
2656         prob=${thing#$comp}
2657         prob=${prob#:}
2658         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2659         echo "prob ${prob:-0.5}"
2660         printf '%s\n' $comp
2661     done
2662 }
2663
2664 do_random(){
2665     action=$1
2666     shift
2667     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2668     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2669 }
2670
2671 for opt do
2672     optval="${opt#*=}"
2673     case "$opt" in
2674         --extra-ldflags=*)
2675             add_ldflags $optval
2676         ;;
2677         --extra-ldexeflags=*)
2678             add_ldexeflags $optval
2679         ;;
2680         --extra-libs=*)
2681             add_extralibs $optval
2682         ;;
2683         --disable-devices)
2684             disable $INDEV_LIST $OUTDEV_LIST
2685         ;;
2686         --enable-debug=*)
2687             debuglevel="$optval"
2688         ;;
2689         --disable-programs)
2690             disable $PROGRAM_LIST
2691         ;;
2692         --disable-everything)
2693             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2694         ;;
2695         --disable-all)
2696             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2697             disable $LIBRARY_LIST $PROGRAM_LIST doc
2698         ;;
2699         --enable-random|--disable-random)
2700             action=${opt%%-random}
2701             do_random ${action#--} $COMPONENT_LIST
2702         ;;
2703         --enable-random=*|--disable-random=*)
2704             action=${opt%%-random=*}
2705             do_random ${action#--} $optval
2706         ;;
2707         --enable-*=*|--disable-*=*)
2708             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2709             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2710             eval list=\$$(toupper $thing)_LIST
2711             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2712             $action $(filter "$name" $list)
2713         ;;
2714         --enable-avserver|--disable-avserver*)
2715             warn "avserver has been removed, the ${opt} option is only"\
2716                  "provided for compatibility and will be removed in the future"
2717         ;;
2718         --enable-?*|--disable-?*)
2719             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2720             if is_in $option $COMPONENT_LIST; then
2721                 test $action = disable && action=unset
2722                 eval $action \$$(toupper ${option%s})_LIST
2723             elif is_in $option $CMDLINE_SELECT; then
2724                 $action $option
2725             else
2726                 die_unknown $opt
2727             fi
2728         ;;
2729         --list-*)
2730             NAME="${opt#--list-}"
2731             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2732             NAME=${NAME%s}
2733             eval show_list $NAME \$$(toupper $NAME)_LIST
2734         ;;
2735         --help|-h) show_help
2736         ;;
2737         *)
2738             optname="${opt%%=*}"
2739             optname="${optname#--}"
2740             optname=$(echo "$optname" | sed 's/-/_/g')
2741             if is_in $optname $CMDLINE_SET; then
2742                 eval $optname='$optval'
2743             elif is_in $optname $CMDLINE_APPEND; then
2744                 append $optname "$optval"
2745             else
2746                 die_unknown $opt
2747             fi
2748         ;;
2749     esac
2750 done
2751
2752 for e in $env; do
2753     eval "export $e"
2754 done
2755
2756 disabled logging && logfile=/dev/null
2757
2758 # Disable all the library-specific components if the library itself
2759 # is disabled, see AVCODEC_LIST and following _LIST variables.
2760
2761 disable_components(){
2762     disabled ${1} && disable $(
2763         eval components="\$$(toupper ${1})_COMPONENTS"
2764         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2765     )
2766 }
2767
2768 map 'disable_components $v' $LIBRARY_LIST
2769
2770 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2771 set >> $logfile
2772
2773 case "$toolchain" in
2774     *-asan)
2775         cc_default="${toolchain%-asan}"
2776         add_cflags  -fsanitize=address
2777         add_ldflags -fsanitize=address
2778     ;;
2779     *-msan)
2780         cc_default="${toolchain%-msan}"
2781         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2782         add_ldflags -fsanitize=memory
2783     ;;
2784     *-tsan)
2785         cc_default="${toolchain%-tsan}"
2786         add_cflags  -fsanitize=thread -pie
2787         add_ldflags -fsanitize=thread -pie
2788         case "$toolchain" in
2789             gcc-tsan)
2790                 add_cflags  -fPIC
2791                 add_ldflags -fPIC
2792                 ;;
2793         esac
2794     ;;
2795     *-usan)
2796         cc_default="${toolchain%-usan}"
2797         add_cflags  -fsanitize=undefined
2798         add_ldflags -fsanitize=undefined
2799         case "$toolchain" in
2800             clang-usan)
2801                 add_cflags -O1
2802                 ;;
2803         esac
2804     ;;
2805     valgrind-*)
2806         target_exec_default="valgrind"
2807         case "$toolchain" in
2808             valgrind-massif)
2809                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2810                 ;;
2811             valgrind-memcheck)
2812                 target_exec_args="--track-origins=yes --leak-check=full"
2813                 ;;
2814         esac
2815     ;;
2816     msvc)
2817         # Check whether the current MSVC version needs the C99 converter.
2818         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2819         # support enough of C99 to build libav. Default to the new
2820         # behaviour if the regexp was unable to match anything, since this
2821         # successfully parses the version number of existing supported
2822         # versions that require the converter (MSVC 2010 and 2012).
2823         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2824         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2825             cc_default="cl"
2826         else
2827             cc_default="c99wrap cl"
2828         fi
2829         ld_default="$source_path/compat/windows/mslink"
2830         nm_default="dumpbin -symbols"
2831         ar_default="lib"
2832         case "$arch" in
2833         arm*)
2834             as_default="armasm"
2835             ;;
2836         esac
2837         target_os_default="win32"
2838         # Use a relative path for TMPDIR. This makes sure all the
2839         # ffconf temp files are written with a relative path, avoiding
2840         # issues with msys/win32 path conversion for MSVC parameters
2841         # such as -Fo<file> or -out:<file>.
2842         TMPDIR=.
2843     ;;
2844     icl)
2845         cc_default="icl"
2846         ld_default="xilink"
2847         nm_default="dumpbin -symbols"
2848         ar_default="xilib"
2849         target_os_default="win32"
2850         TMPDIR=.
2851     ;;
2852     gcov)
2853         add_cflags  -fprofile-arcs -ftest-coverage
2854         add_ldflags -fprofile-arcs -ftest-coverage
2855     ;;
2856     llvm-cov)
2857         add_cflags -fprofile-arcs -ftest-coverage
2858         add_ldflags --coverage
2859     ;;
2860     hardened)
2861         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2862         add_cflags   -fno-strict-overflow -fstack-protector-all
2863         add_ldflags  -Wl,-z,relro -Wl,-z,now
2864     ;;
2865     ?*)
2866         die "Unknown toolchain $toolchain"
2867     ;;
2868 esac
2869
2870 test -n "$cross_prefix" && enable cross_compile
2871
2872 if enabled cross_compile; then
2873     test -n "$arch" && test -n "$target_os" ||
2874         die "Must specify target arch and OS when cross-compiling"
2875 fi
2876
2877 ar_default="${cross_prefix}${ar_default}"
2878 cc_default="${cross_prefix}${cc_default}"
2879 occ_default="${cross_prefix}${occ_default}"
2880 nm_default="${cross_prefix}${nm_default}"
2881 pkg_config_default="${cross_prefix}${pkg_config_default}"
2882 ranlib="${cross_prefix}${ranlib}"
2883 strip="${cross_prefix}${strip}"
2884
2885 sysinclude_default="${sysroot}/usr/include"
2886
2887 set_default arch cc pkg_config sysinclude target_exec target_os
2888 enabled cross_compile || host_cc_default=$cc
2889 set_default host_cc
2890
2891 if ! $pkg_config --version >/dev/null 2>&1; then
2892     warn "$pkg_config not found, library detection may fail."
2893     pkg_config=false
2894 fi
2895
2896 exesuf() {
2897     case $1 in
2898         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2899     esac
2900 }
2901
2902 EXESUF=$(exesuf $target_os)
2903 HOSTEXESUF=$(exesuf $host_os)
2904
2905 # set temporary file name
2906 : ${TMPDIR:=$TEMPDIR}
2907 : ${TMPDIR:=$TMP}
2908 : ${TMPDIR:=/tmp}
2909
2910 if ! check_cmd mktemp -u XXXXXX; then
2911     # simple replacement for missing mktemp
2912     # NOT SAFE FOR GENERAL USE
2913     mktemp(){
2914         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2915     }
2916 fi
2917
2918 tmpfile(){
2919     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2920         (set -C; exec > $tmp) 2>/dev/null ||
2921         die "Unable to create temporary file in $TMPDIR."
2922     append TMPFILES $tmp
2923     eval $1=$tmp
2924 }
2925
2926 trap 'rm -f -- $TMPFILES' EXIT
2927
2928 tmpfile TMPASM .asm
2929 tmpfile TMPC   .c
2930 tmpfile TMPE   $EXESUF
2931 tmpfile TMPH   .h
2932 tmpfile TMPO   .o
2933 tmpfile TMPS   .S
2934 tmpfile TMPSH  .sh
2935 tmpfile TMPV   .ver
2936
2937 unset -f mktemp
2938
2939 chmod +x $TMPE
2940
2941 # make sure we can execute files in $TMPDIR
2942 cat > $TMPSH 2>> $logfile <<EOF
2943 #! /bin/sh
2944 EOF
2945 chmod +x $TMPSH >> $logfile 2>&1
2946 if ! $TMPSH >> $logfile 2>&1; then
2947     cat <<EOF
2948 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2949 variable to another directory and make sure that it is not mounted noexec.
2950 EOF
2951     die "Sanity test failed."
2952 fi
2953
2954 armasm_flags(){
2955     for flag; do
2956         case $flag in
2957             # Filter out MSVC cl.exe options from cflags that shouldn't
2958             # be passed to gas-preprocessor
2959             -M[TD]*)                                            ;;
2960             *)                  echo $flag                      ;;
2961         esac
2962    done
2963 }
2964
2965 ccc_flags(){
2966     for flag; do
2967         case $flag in
2968             -std=c99)           echo -c99                       ;;
2969             -mcpu=*)            echo -arch ${flag#*=}           ;;
2970             -mieee)             echo -ieee                      ;;
2971             -O*|-fast)          echo $flag                      ;;
2972             -fno-math-errno)    echo -assume nomath_errno       ;;
2973             -g)                 echo -g3                        ;;
2974             -Wall)              echo -msg_enable level2         ;;
2975             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2976             -Wl,*)              echo $flag                      ;;
2977             -f*|-W*)                                            ;;
2978             *)                  echo $flag                      ;;
2979         esac
2980    done
2981 }
2982
2983 cparser_flags(){
2984     for flag; do
2985         case $flag in
2986             -Wno-switch)             echo -Wno-switch-enum ;;
2987             -Wno-format-zero-length) ;;
2988             -Wdisabled-optimization) ;;
2989             -Wno-pointer-sign)       echo -Wno-other ;;
2990             *)                       echo $flag ;;
2991         esac
2992     done
2993 }
2994
2995 msvc_common_flags(){
2996     for flag; do
2997         case $flag in
2998             # In addition to specifying certain flags under the compiler
2999             # specific filters, they must be specified here as well or else the
3000             # generic catch all at the bottom will print the original flag.
3001             -Wall)                ;;
3002             -std=c99)             ;;
3003             # Common flags
3004             -fomit-frame-pointer) ;;
3005             -g)                   echo -Z7 ;;
3006             -fno-math-errno)      ;;
3007             -fno-common)          ;;
3008             -fno-signed-zeros)    ;;
3009             -fPIC)                ;;
3010             -mthumb)              ;;
3011             -march=*)             ;;
3012             -lz)                  echo zlib.lib ;;
3013             -lavifil32)           echo vfw32.lib ;;
3014             -lavicap32)           echo vfw32.lib user32.lib ;;
3015             -lx264)               echo libx264.lib ;;
3016             -l*)                  echo ${flag#-l}.lib ;;
3017             -L*)                  echo -libpath:${flag#-L} ;;
3018             *)                    echo $flag ;;
3019         esac
3020     done
3021 }
3022
3023 msvc_flags(){
3024     msvc_common_flags "$@"
3025     for flag; do
3026         case $flag in
3027             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3028                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3029                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3030                                        -wd4273 -wd4554 -wd4701 ;;
3031         esac
3032     done
3033 }
3034
3035 icl_flags(){
3036     msvc_common_flags "$@"
3037     for flag; do
3038         case $flag in
3039             # Despite what Intel's documentation says -Wall, which is supported
3040             # on Windows, does enable remarks so disable them here.
3041             -Wall)                echo $flag -Qdiag-disable:remark ;;
3042             -std=c99)             echo -Qstd=c99 ;;
3043         esac
3044     done
3045 }
3046
3047 pgi_flags(){
3048     for flag; do
3049         case $flag in
3050             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3051             -fomit-frame-pointer) echo -Mnoframe ;;
3052             -g)                   echo -gopt ;;
3053             *)                    echo $flag ;;
3054         esac
3055     done
3056 }
3057
3058 suncc_flags(){
3059     for flag; do
3060         case $flag in
3061             -march=*|-mcpu=*)
3062                 case "${flag#*=}" in
3063                     native)                   echo -xtarget=native       ;;
3064                     v9|niagara)               echo -xarch=sparc          ;;
3065                     ultrasparc)               echo -xarch=sparcvis       ;;
3066                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3067                     i586|pentium)             echo -xchip=pentium        ;;
3068                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3069                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3070                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3071                     pentium4*)          echo -xtarget=pentium4           ;;
3072                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3073                     *-sse3)             echo -xarch=sse3                 ;;
3074                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3075                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3076                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3077                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3078                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3079                     k8|opteron|athlon64|athlon-fx)
3080                                                echo -xarch=sse2a         ;;
3081                     athlon*)                   echo -xarch=pentium_proa  ;;
3082                 esac
3083                 ;;
3084             -std=c99)             echo -xc99              ;;
3085             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3086             -fPIC)                echo -KPIC -xcode=pic32 ;;
3087             -W*,*)                echo $flag              ;;
3088             -f*-*|-W*|-mimpure-text)                      ;;
3089             -shared)              echo -G                 ;;
3090             *)                    echo $flag              ;;
3091         esac
3092     done
3093 }
3094
3095 tms470_flags(){
3096     for flag; do
3097         case $flag in
3098             -march=*|-mcpu=*)
3099                 case "${flag#*=}" in
3100                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3101                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3102                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3103                     armv6*|arm11*)          echo -mv=6   ;;
3104                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3105                                             echo -mv=5e  ;;
3106                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3107                 esac
3108                 ;;
3109             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3110             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3111             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3112             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3113             -msoft-float)   echo --float_support=vfplib       ;;
3114             -O[0-3]|-mf=*)  echo $flag                        ;;
3115             -g)             echo -g -mn                       ;;
3116             -pds=*)         echo $flag                        ;;
3117             -D*|-I*)        echo $flag                        ;;
3118             --gcc|--abi=*)  echo $flag                        ;;
3119             -me)            echo $flag                        ;;
3120         esac
3121     done
3122 }
3123
3124 probe_cc(){
3125     pfx=$1
3126     _cc=$2
3127
3128     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3129     unset _ld_o _ldflags _ld_lib _ld_path
3130     unset _depflags _DEPCMD _DEPFLAGS
3131     _flags_filter=echo
3132
3133     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3134         _type=llvm_gcc
3135         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3136         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3137         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3138         _cflags_speed='-O3'
3139         _cflags_size='-Os'
3140     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3141         _type=gcc
3142         gcc_version=$($_cc --version | head -n1)
3143         gcc_basever=$($_cc -dumpversion)
3144         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3145         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3146         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3147         if ! $_cc -dumpversion | grep -q '^2\.'; then
3148             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3149         fi
3150         _cflags_speed='-O3'
3151         _cflags_size='-Os'
3152     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3153         _type=icc
3154         _ident=$($_cc --version | head -n1)
3155         _depflags='-MMD'
3156         _cflags_speed='-O3'
3157         _cflags_size='-Os'
3158         _cflags_noopt='-O1'
3159     elif $_cc -v 2>&1 | grep -q xlc; then
3160         _type=xlc
3161         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3162         _cflags_speed='-O5'
3163         _cflags_size='-O5 -qcompact'
3164     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3165         _type=ccc
3166         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3167         _DEPFLAGS='-M'
3168         _cflags_speed='-fast'
3169         _cflags_size='-O1'
3170         _flags_filter=ccc_flags
3171     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3172         test -d "$sysroot" || die "No valid sysroot specified."
3173         _type=armcc
3174         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3175         armcc_conf="$PWD/armcc.conf"
3176         $_cc --arm_linux_configure                 \
3177              --arm_linux_config_file="$armcc_conf" \
3178              --configure_sysroot="$sysroot"        \
3179              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3180              die "Error creating armcc configuration file."
3181         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3182         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3183         as_default="${cross_prefix}gcc"
3184         _depflags='-MMD'
3185         _cflags_speed='-O3'
3186         _cflags_size='-Os'
3187     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3188         _type=tms470
3189         _ident=$($_cc -version | head -n1 | tr -s ' ')
3190         _flags='--gcc --abi=eabi -me'
3191         _cc_e='-ppl -fe=$@'
3192         _cc_o='-fe=$@'
3193         _depflags='-ppa -ppd=$(@:.o=.d)'
3194         _cflags_speed='-O3 -mf=5'
3195         _cflags_size='-O3 -mf=2'
3196         _flags_filter=tms470_flags
3197     elif $_cc -v 2>&1 | grep -q clang; then
3198         _type=clang
3199         _ident=$($_cc --version 2>/dev/null | head -n1)
3200         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3201         _cflags_speed='-O3'
3202         _cflags_size='-Os'
3203     elif $_cc -V 2>&1 | grep -q Sun; then
3204         _type=suncc
3205         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3206         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3207         _DEPFLAGS='-xM1 -xc99'
3208         _ldflags='-std=c99'
3209         _cflags_speed='-O5'
3210         _cflags_size='-O5 -xspace'
3211         _flags_filter=suncc_flags
3212     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3213         _type=pathscale
3214         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3215         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3216         _cflags_speed='-O2'
3217         _cflags_size='-Os'
3218         _flags_filter='filter_out -Wdisabled-optimization'
3219     elif $_cc -v 2>&1 | grep -q Open64; then
3220         _type=open64
3221         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3222         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3223         _cflags_speed='-O2'
3224         _cflags_size='-Os'
3225         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3226     elif $_cc -V 2>&1 | grep -q Portland; then
3227         _type=pgi
3228         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3229         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3230         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3231         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3232         _cflags_noopt="-O1"
3233         _flags_filter=pgi_flags
3234     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3235         _type=armasm
3236         _ident=$($_cc | head -n1)
3237         # 4509: "This form of conditional instruction is deprecated"
3238         _flags="-nologo -ignore 4509"
3239         _flags_filter=armasm_flags
3240     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3241         _type=msvc
3242         _ident=$($_cc 2>&1 | head -n1)
3243         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3244         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3245         _cflags_speed="-O2"
3246         _cflags_size="-O1"
3247         if $_cc -nologo- 2>&1 | grep -q Linker; then
3248             _ld_o='-out:$@'
3249         else
3250             _ld_o='-Fe$@'
3251         fi
3252         _cc_o='-Fo$@'
3253         _cc_e='-P -Fi$@'
3254         _flags_filter=msvc_flags
3255         _ld_lib='lib%.a'
3256         _ld_path='-libpath:'
3257         _flags='-nologo'
3258     elif $_cc 2>&1 | grep -q Intel; then
3259         _type=icl
3260         _ident=$($_cc 2>&1 | head -n1)
3261         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3262         # Not only is O3 broken on 13.x+ but it is slower on all previous
3263         # versions (tested) as well.
3264         _cflags_speed="-O2"
3265         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3266         if $_cc 2>&1 | grep -q Linker; then
3267             _ld_o='-out:$@'
3268         else
3269             _ld_o='-Fe$@'
3270         fi
3271         _cc_o='-Fo$@'
3272         _cc_e='-P'
3273         _flags_filter=icl_flags
3274         _ld_lib='lib%.a'
3275         _ld_path='-libpath:'
3276         # -Qdiag-error to make icl error when seeing certain unknown arguments
3277         _flags='-nologo -Qdiag-error:4044,10157'
3278         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3279         # with MSVC which enables it by default.
3280         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3281     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3282         # lld can emulate multiple different linkers; in ms link.exe mode,
3283         # the -? parameter gives the help output which contains an identifyable
3284         # string, while it gives an error in other modes.
3285         _type=lld-link
3286         # The link.exe mode doesn't have a switch for getting the version,
3287         # but we can force it back to gnu mode and get the version from there.
3288         _ident=$($_cc -flavor gnu --version)
3289         _ld_o='-out:$@'
3290         _flags_filter=msvc_flags
3291         _ld_lib='lib%.a'
3292         _ld_path='-libpath:'
3293     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3294         _type=cparser
3295         _ident=$($_cc --version | head -n1)
3296         _depflags='-MMD'
3297         _cflags_speed='-O4'
3298         _cflags_size='-O2'
3299         _flags_filter=cparser_flags
3300     fi
3301
3302     eval ${pfx}_type=\$_type
3303     eval ${pfx}_ident=\$_ident
3304 }
3305
3306 set_ccvars(){
3307     eval ${1}_C=\${_cc_c-\${${1}_C}}
3308     eval ${1}_E=\${_cc_e-\${${1}_E}}
3309     eval ${1}_O=\${_cc_o-\${${1}_O}}
3310
3311     if [ -n "$_depflags" ]; then
3312         eval ${1}_DEPFLAGS=\$_depflags
3313     else
3314         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3315         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3316         eval DEP${1}FLAGS=\$_flags
3317     fi
3318 }
3319
3320 probe_cc cc "$cc"
3321 cflags_filter=$_flags_filter
3322 cflags_speed=$_cflags_speed
3323 cflags_size=$_cflags_size
3324 cflags_noopt=$_cflags_noopt
3325 add_cflags $_flags $_cflags
3326 cc_ldflags=$_ldflags
3327 set_ccvars CC
3328
3329 probe_cc hostcc "$host_cc"
3330 host_cflags_filter=$_flags_filter
3331 add_host_cflags  $_flags $_cflags
3332 set_ccvars HOSTCC
3333
3334 test -n "$cc_type" && enable $cc_type ||
3335     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3336
3337 : ${as_default:=$cc}
3338 : ${objcc_default:=$cc}
3339 : ${dep_cc_default:=$cc}
3340 : ${ld_default:=$cc}
3341 : ${host_ld_default:=$host_cc}
3342 set_default ar as objcc dep_cc ld host_ld
3343
3344 probe_cc as "$as"
3345 asflags_filter=$_flags_filter
3346 add_asflags $_flags $_cflags
3347 set_ccvars AS
3348
3349 probe_cc objcc "$objcc"
3350 objcflags_filter=$_flags_filter
3351 add_objcflags $_flags $_cflags
3352 set_ccvars OBJC
3353
3354 probe_cc ld "$ld"
3355 ldflags_filter=$_flags_filter
3356 add_ldflags $_flags $_ldflags
3357 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3358 LD_O=${_ld_o-$LD_O}
3359 LD_LIB=${_ld_lib-$LD_LIB}
3360 LD_PATH=${_ld_path-$LD_PATH}
3361
3362 probe_cc hostld "$host_ld"
3363 host_ldflags_filter=$_flags_filter
3364 add_host_ldflags $_flags $_ldflags
3365 HOSTLD_O=${_ld_o-$HOSTLD_O}
3366
3367 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3368     probe_cc depcc "$dep_cc"
3369     CCDEP=${_DEPCMD:-$DEPCMD}
3370     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3371     DEPCCFLAGS=$_flags
3372 fi
3373
3374 if $ar 2>&1 | grep -q Microsoft; then
3375     arflags="-nologo"
3376     ar_o='-out:$@'
3377 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3378     arflags="rq"
3379     ar_o='$@'
3380 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3381     arflags='-Xany -r -c'
3382     ar_o='$@'
3383 else
3384     arflags="rc"
3385     ar_o='$@'
3386 fi
3387
3388 add_cflags $extra_cflags
3389 add_objcflags $extra_objcflags
3390 add_asflags $extra_cflags
3391
3392 if test -n "$sysroot"; then
3393     case "$cc_type" in
3394         gcc|llvm_gcc|clang)
3395             add_cppflags --sysroot="$sysroot"
3396             add_ldflags --sysroot="$sysroot"
3397         ;;
3398         tms470)
3399             add_cppflags -I"$sysinclude"
3400             add_ldflags  --sysroot="$sysroot"
3401         ;;
3402     esac
3403 fi
3404
3405 if test "$cpu" = host; then
3406     enabled cross_compile &&
3407         die "--cpu=host makes no sense when cross-compiling."
3408
3409     case "$cc_type" in
3410         gcc|llvm_gcc)
3411             check_native(){
3412                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3413                 sed -n "/cc1.*$1=/{
3414                             s/.*$1=\\([^ ]*\\).*/\\1/
3415                             p
3416                             q
3417                         }" $TMPE
3418             }
3419             cpu=$(check_native -march || check_native -mcpu)
3420         ;;
3421     esac
3422
3423     test "${cpu:-host}" = host &&
3424         die "--cpu=host not supported with compiler $cc"
3425 fi
3426
3427 # Deal with common $arch aliases
3428 case "$arch" in
3429     aarch64|arm64)
3430         arch="aarch64"
3431     ;;
3432     arm*)
3433         arch="arm"
3434     ;;
3435     mips*|IP*)
3436         case "$arch" in
3437         *el)
3438             add_cppflags -EL
3439             add_ldflags -EL
3440         ;;
3441         *eb)
3442             add_cppflags -EB
3443             add_ldflags -EB
3444         ;;
3445         esac
3446         arch="mips"
3447     ;;
3448     parisc*|hppa*)
3449         arch="parisc"
3450     ;;
3451     "Power Macintosh"|ppc*|powerpc*)
3452         arch="ppc"
3453     ;;
3454     s390|s390x)
3455         arch="s390"
3456     ;;
3457     sh4|sh)
3458         arch="sh4"
3459     ;;
3460     sun4u|sparc*)
3461         arch="sparc"
3462     ;;
3463     tilegx|tile-gx)
3464         arch="tilegx"
3465     ;;
3466     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3467         arch="x86"
3468     ;;
3469 esac
3470
3471 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3472 enable $arch
3473
3474 # Add processor-specific flags
3475 if enabled aarch64; then
3476
3477     case $cpu in
3478         armv*)
3479             cpuflags="-march=$cpu"
3480         ;;
3481         *)
3482             cpuflags="-mcpu=$cpu"
3483         ;;
3484     esac
3485
3486 elif enabled alpha; then
3487
3488     cpuflags="-mcpu=$cpu"
3489
3490 elif enabled arm; then
3491
3492     check_arm_arch() {
3493         check_cpp_condition stddef.h \
3494             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3495             $cpuflags
3496     }
3497
3498     probe_arm_arch() {
3499         if   check_arm_arch 4;        then echo armv4
3500         elif check_arm_arch 4T;       then echo armv4t
3501         elif check_arm_arch 5;        then echo armv5
3502         elif check_arm_arch 5E;       then echo armv5e
3503         elif check_arm_arch 5T;       then echo armv5t
3504         elif check_arm_arch 5TE;      then echo armv5te
3505         elif check_arm_arch 5TEJ;     then echo armv5te
3506         elif check_arm_arch 6;        then echo armv6
3507         elif check_arm_arch 6J;       then echo armv6j
3508         elif check_arm_arch 6K;       then echo armv6k
3509         elif check_arm_arch 6Z;       then echo armv6z
3510         elif check_arm_arch 6ZK;      then echo armv6zk
3511         elif check_arm_arch 6T2;      then echo armv6t2
3512         elif check_arm_arch 7;        then echo armv7
3513         elif check_arm_arch 7A  7_A;  then echo armv7-a
3514         elif check_arm_arch 7S;       then echo armv7-a
3515         elif check_arm_arch 7R  7_R;  then echo armv7-r
3516         elif check_arm_arch 7M  7_M;  then echo armv7-m
3517         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3518         elif check_arm_arch 8A  8_A;  then echo armv8-a
3519         fi
3520     }
3521
3522     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3523
3524     case $cpu in
3525         armv*)
3526             cpuflags="-march=$cpu"
3527             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3528         ;;
3529         *)
3530             cpuflags="-mcpu=$cpu"
3531             case $cpu in
3532                 cortex-a*)                               subarch=armv7a  ;;
3533                 cortex-r*)                               subarch=armv7r  ;;
3534                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3535                 arm11*)                                  subarch=armv6   ;;
3536                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3537                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3538                 *)                             subarch=$(probe_arm_arch) ;;
3539             esac
3540         ;;
3541     esac
3542
3543     case "$subarch" in
3544         armv5t*)    enable fast_clz                ;;
3545         armv[6-8]*) enable fast_clz fast_unaligned ;;
3546     esac
3547
3548 elif enabled avr32; then
3549
3550     case $cpu in
3551         ap7[02]0[0-2])
3552             subarch="avr32_ap"
3553             cpuflags="-mpart=$cpu"
3554         ;;
3555         ap)
3556             subarch="avr32_ap"
3557             cpuflags="-march=$cpu"
3558         ;;
3559         uc3[ab]*)
3560             subarch="avr32_uc"
3561             cpuflags="-mcpu=$cpu"
3562         ;;
3563         uc)
3564             subarch="avr32_uc"
3565             cpuflags="-march=$cpu"
3566         ;;
3567     esac
3568
3569 elif enabled bfin; then
3570
3571     cpuflags="-mcpu=$cpu"
3572
3573 elif enabled mips; then
3574
3575     cpuflags="-march=$cpu"
3576
3577 elif enabled ppc; then
3578
3579     disable ldbrx
3580
3581     case $(tolower $cpu) in
3582         601|ppc601|powerpc601)
3583             cpuflags="-mcpu=601"
3584             disable altivec
3585         ;;
3586         603*|ppc603*|powerpc603*)
3587             cpuflags="-mcpu=603"
3588             disable altivec
3589         ;;
3590         604*|ppc604*|powerpc604*)
3591             cpuflags="-mcpu=604"
3592             disable altivec
3593         ;;
3594         g3|75*|ppc75*|powerpc75*)
3595             cpuflags="-mcpu=750"
3596             disable altivec
3597         ;;
3598         g4|745*|ppc745*|powerpc745*)
3599             cpuflags="-mcpu=7450"
3600             disable vsx
3601         ;;
3602         74*|ppc74*|powerpc74*)
3603             cpuflags="-mcpu=7400"
3604             disable vsx
3605         ;;
3606         g5|970|ppc970|powerpc970)
3607             cpuflags="-mcpu=970"
3608             disable vsx
3609         ;;
3610         power[3-6]*)
3611             cpuflags="-mcpu=$cpu"
3612             disable vsx
3613         ;;
3614         power[7-8]*)
3615             cpuflags="-mcpu=$cpu"
3616             enable ldbrx
3617         ;;
3618         cell)
3619             cpuflags="-mcpu=cell"
3620             enable ldbrx
3621             disable vsx
3622         ;;
3623         e500mc)
3624             cpuflags="-mcpu=e500mc"
3625             disable altivec
3626         ;;
3627         e500v2)
3628             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3629             disable altivec
3630             disable dcbzl
3631         ;;
3632         e500)
3633             cpuflags="-mcpu=8540 -mhard-float"
3634             disable altivec
3635             disable dcbzl
3636         ;;
3637     esac
3638
3639 elif enabled sparc; then
3640
3641     case $cpu in
3642         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3643             cpuflags="-mcpu=$cpu"
3644         ;;
3645         ultrasparc*|niagara[234])
3646             cpuflags="-mcpu=$cpu"
3647         ;;
3648     esac
3649
3650 elif enabled x86; then
3651
3652     case $cpu in
3653         i[345]86|pentium)
3654             cpuflags="-march=$cpu"
3655             disable i686
3656             disable mmx
3657         ;;
3658         # targets that do NOT support nopl and conditional mov (cmov)
3659         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3660             cpuflags="-march=$cpu"
3661             disable i686
3662         ;;
3663         # targets that do support nopl and conditional mov (cmov)
3664         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3665             cpuflags="-march=$cpu"
3666             enable i686
3667             enable fast_cmov
3668         ;;
3669         # targets that do support conditional mov but on which it's slow
3670         pentium4|pentium4m|prescott|nocona)
3671             cpuflags="-march=$cpu"
3672             enable i686
3673             disable fast_cmov
3674         ;;
3675     esac
3676
3677 fi
3678
3679 if [ "$cpu" != generic ]; then
3680     add_cflags  $cpuflags
3681     add_asflags $cpuflags
3682     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3683 fi
3684
3685 # compiler sanity check
3686 check_exec <<EOF
3687 int main(void){ return 0; }
3688 EOF
3689 if test "$?" != 0; then
3690     echo "$cc is unable to create an executable file."
3691     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3692         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3693         echo "Only do this if you know what cross compiling means."
3694     fi
3695     die "C compiler test failed."
3696 fi
3697
3698 add_cppflags -D_ISOC99_SOURCE
3699
3700 # some compilers silently accept -std=c11, so we also need to check that the
3701 # version macro is defined properly
3702 if test_cflags_cpp -std=c11 "__STDC_VERSION__ >= 201112L"; then
3703     add_cflags -std=c11
3704 else
3705     check_cflags -std=c99
3706 fi
3707
3708 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3709 #include <stdlib.h>
3710 EOF
3711 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3712 #include <stdlib.h>
3713 EOF
3714
3715 add_host_cppflags -D_ISOC99_SOURCE
3716 check_host_cflags -std=c99
3717 check_host_cflags -Wall
3718 check_host_cflags -O3
3719
3720 check_64bit(){
3721     arch32=$1
3722     arch64=$2
3723     expr=$3
3724     check_code cc "" "int test[2*($expr) - 1]" &&
3725         subarch=$arch64 || subarch=$arch32
3726 }
3727
3728 case "$arch" in
3729     aarch64|alpha|ia64)
3730         spic=$shared
3731     ;;
3732     mips)
3733         check_64bit mips mips64 '_MIPS_SIM > 1'
3734         spic=$shared
3735     ;;
3736     parisc)
3737         check_64bit parisc parisc64 'sizeof(void *) > 4'
3738         spic=$shared
3739     ;;
3740     ppc)
3741         check_64bit ppc ppc64 'sizeof(void *) > 4'
3742         spic=$shared
3743     ;;
3744     s390)
3745         check_64bit s390 s390x 'sizeof(void *) > 4'
3746         spic=$shared
3747     ;;
3748     sparc)
3749         check_64bit sparc sparc64 'sizeof(void *) > 4'
3750         spic=$shared
3751     ;;
3752     x86)
3753         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3754         if test "$subarch" = "x86_64"; then
3755             spic=$shared
3756         fi
3757     ;;
3758 esac
3759
3760 enable $subarch
3761 enabled spic && enable_weak pic
3762
3763 # OS specific
3764 case $target_os in
3765     aix)
3766         SHFLAGS=-shared
3767         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3768         enabled shared && add_ldflags -Wl,-brtl
3769         ;;
3770     android)
3771         disable symver
3772         enable section_data_rel_ro
3773         SLIB_INSTALL_NAME='$(SLIBNAME)'
3774         SLIB_INSTALL_LINKS=
3775         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3776         ;;
3777     haiku)
3778         prefix_default="/boot/common"
3779         network_extralibs="-lnetwork"
3780         host_libs=
3781         ;;
3782     sunos)
3783         SHFLAGS='-shared -Wl,-h,$$(@F)'
3784         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3785         network_extralibs="-lsocket -lnsl"
3786         # When using suncc to build, the Solaris linker will mark
3787         # an executable with each instruction set encountered by
3788         # the Solaris assembler.  As our libraries contain their own
3789         # guards for processor-specific code, instead suppress
3790         # generation of the HWCAPS ELF section on Solaris x86 only.
3791         enabled_all suncc x86 &&
3792             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3793             add_ldflags -Wl,-M,mapfile
3794         nm_default='nm -P -g'
3795         version_script='-M'
3796         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3797         ;;
3798     netbsd)
3799         disable symver
3800         oss_indev_extralibs="-lossaudio"
3801         oss_outdev_extralibs="-lossaudio"
3802         ;;
3803     openbsd|bitrig)
3804         disable symver
3805         SHFLAGS='-shared'
3806         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3807         SLIB_INSTALL_LINKS=
3808         oss_indev_extralibs="-lossaudio"
3809         oss_outdev_extralibs="-lossaudio"
3810         ;;
3811     dragonfly)
3812         disable symver
3813         ;;
3814     freebsd)
3815         ;;
3816     bsd/os)
3817         add_extralibs -lpoll -lgnugetopt
3818         ;;
3819     darwin)
3820         enabled ppc && add_asflags -force_cpusubtype_ALL
3821         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3822         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3823         add_ldflags -Wl,-dynamic,-search_paths_first
3824         SLIBSUF=".dylib"
3825         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3826         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3827         objformat="macho"
3828         enabled x86_64 && objformat="macho64"
3829         enabled_any pic shared ||
3830             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3831         check_header dispatch/dispatch.h &&
3832             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3833         ;;
3834     msys*)
3835         die "Native MSYS builds are discouraged, please use the MINGW environment."
3836         ;;
3837     mingw32*|mingw64*)
3838         if test $target_os = "mingw32ce"; then
3839             disable network
3840         else
3841             target_os=mingw32
3842         fi
3843         LIBTARGET=i386
3844         if enabled x86_64; then
3845             LIBTARGET="i386:x86-64"
3846         elif enabled arm; then
3847             LIBTARGET=arm-wince
3848         fi
3849         check_ldflags -Wl,--nxcompat
3850         check_ldflags -Wl,--dynamicbase
3851         shlibdir_default="$bindir_default"
3852         SLIBPREF=""
3853         SLIBSUF=".dll"
3854         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3855         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3856         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3857         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3858         SLIB_INSTALL_LINKS=
3859         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3860         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3861         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3862         objformat="win32"
3863         dlltool="${cross_prefix}dlltool"
3864         ranlib=:
3865         enable dos_paths
3866         ;;
3867     win32|win64)
3868         disable symver
3869         if enabled shared; then
3870             # Link to the import library instead of the normal static library
3871             # for shared libs.
3872             LD_LIB='%.lib'
3873             # Cannot build both shared and static libs with MSVC or icl.
3874             disable static
3875         fi
3876         shlibdir_default="$bindir_default"
3877         SLIBPREF=""
3878         SLIBSUF=".dll"
3879         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3880         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3881         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3882         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3883         SLIB_INSTALL_LINKS=
3884         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3885         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3886         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3887         objformat="win32"
3888         ranlib=:
3889         enable dos_paths
3890         ;;
3891     cygwin*)
3892         target_os=cygwin
3893         shlibdir_default="$bindir_default"
3894         SLIBPREF="cyg"
3895         SLIBSUF=".dll"
3896         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3897         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3898         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3899         SLIB_INSTALL_LINKS=
3900         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3901         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3902         objformat="win32"
3903         enable dos_paths
3904         ;;
3905     *-dos|freedos|opendos)
3906         network_extralibs="-lsocket"
3907         objformat="coff"
3908         enable dos_paths
3909         add_cppflags -U__STRICT_ANSI__
3910         ;;
3911     linux)
3912         enable dv1394
3913         enable section_data_rel_ro
3914         ;;
3915     irix*)
3916         target_os=irix
3917         ranlib="echo ignoring ranlib"
3918         ;;
3919     os/2*)
3920         ln_s="cp -f"
3921         objformat="aout"
3922         add_cppflags -D_GNU_SOURCE
3923         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3924         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3925         LIBSUF="_s.a"
3926         SLIBPREF=""
3927         SLIBSUF=".dll"
3928         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3929         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3930         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3931             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3932             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3933             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3934             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3935         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3936             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3937         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3938         enable dos_paths
3939         ;;
3940     gnu/kfreebsd)
3941         add_cppflags -D_BSD_SOURCE
3942         ;;
3943     gnu)
3944         ;;
3945     qnx)
3946         add_cppflags -D_QNX_SOURCE
3947         network_extralibs="-lsocket"
3948         ;;
3949     symbian)
3950         SLIBSUF=".dll"
3951         enable dos_paths
3952         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3953         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3954         add_ldflags -Wl,--target1-abs,--no-undefined \
3955                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3956                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3957         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3958                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3959                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3960         ;;
3961     osf1)
3962         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3963         ;;
3964     minix)
3965         ;;
3966     plan9)
3967         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3968                      -D_REENTRANT_SOURCE        \
3969                      -D_RESEARCH_SOURCE         \
3970                      -DFD_SETSIZE=96            \
3971                      -DHAVE_SOCK_OPTS
3972         add_compat strtod.o strtod=avpriv_strtod
3973         network_extralibs='-lbsd'
3974         exeobjs=compat/plan9/main.o
3975         cp_f='cp'
3976         ;;
3977     none)
3978         ;;
3979     *)
3980         die "Unknown OS '$target_os'."
3981         ;;
3982 esac
3983
3984 # determine libc flavour
3985
3986 probe_libc(){
3987     pfx=$1
3988     pfx_no_=${pfx%_}
3989     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3990     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3991         eval ${pfx}libc_type=uclibc
3992         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3993     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3994         eval ${pfx}libc_type=glibc
3995         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3996     # MinGW headers can be installed on Cygwin, so check for newlib first.
3997     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3998         eval ${pfx}libc_type=newlib
3999         add_${pfx}cppflags -U__STRICT_ANSI__
4000     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4001     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4002         eval ${pfx}libc_type=mingw64
4003         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4004         eval test \$${pfx_no_}cc_type = "gcc" &&
4005             add_${pfx}cppflags -D__printf__=__gnu_printf__
4006     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4007          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4008         eval ${pfx}libc_type=mingw32
4009         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4010             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4011             die "ERROR: MinGW32 runtime version must be >= 3.15."
4012         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4013         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
4014             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4015         eval test \$${pfx_no_}cc_type = "gcc" &&
4016             add_${pfx}cppflags -D__printf__=__gnu_printf__
4017     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4018         eval ${pfx}libc_type=msvcrt
4019         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4020             if [ "$pfx" = host_ ]; then
4021                 add_host_cppflags -Dsnprintf=_snprintf
4022             else
4023                 add_compat strtod.o strtod=avpriv_strtod
4024                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4025                                              _snprintf=avpriv_snprintf  \
4026                                              vsnprintf=avpriv_vsnprintf
4027             fi
4028         fi
4029         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4030         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4031         # 0x601 by default unless something else is set by the user.
4032         # This can easily lead to us detecting functions only present
4033         # in such new versions and producing binaries requiring windows 7.0.
4034         # Therefore explicitly set the default to XP unless the user has
4035         # set something else on the command line.
4036         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4037         # family. For these cases, configure is free to use any functions
4038         # found in the SDK headers by default. (Alternatively, we could force
4039         # _WIN32_WINNT to 0x0602 in that case.)
4040         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4041             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4042 #ifdef WINAPI_FAMILY
4043 #include <winapifamily.h>
4044 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4045 #error not desktop
4046 #endif
4047 #endif
4048 EOF
4049         if [ "$pfx" = "" ]; then
4050             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4051         fi
4052     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4053         eval ${pfx}libc_type=klibc
4054     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4055         eval ${pfx}libc_type=bionic
4056     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4057         eval ${pfx}libc_type=solaris
4058         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4059     else
4060         eval ${pfx}libc_type=default
4061         add_${pfx}cppflags -D_DEFAULT_SOURCE
4062     fi
4063 }
4064
4065 probe_libc
4066 test -n "$libc_type" && enable libc_$libc_type
4067 probe_libc host_
4068 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4069
4070 case $libc_type in
4071     bionic)
4072         add_compat strtod.o strtod=avpriv_strtod
4073         ;;
4074 esac
4075
4076 # hacks for compiler/libc/os combinations
4077
4078 if enabled_all tms470 libc_glibc; then
4079     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4080     add_cppflags -D__USER_LABEL_PREFIX__=
4081     add_cppflags -D__builtin_memset=memset
4082     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4083     add_cflags   -pds=48    # incompatible redefinition of macro
4084 fi
4085
4086 if enabled_all ccc libc_glibc; then
4087     add_ldflags -Wl,-z,now  # calls to libots crash without this
4088 fi
4089
4090 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4091     add_cppflags '-I\$(SRC_PATH)/compat/float'
4092
4093 esc(){
4094     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4095 }
4096
4097 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
4098
4099 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4100
4101 set_default $PATHS_LIST
4102 set_default nm
4103
4104 # we need to build at least one lib type
4105 if ! enabled_any static shared; then
4106     cat <<EOF
4107 At least one library type must be built.
4108 Specify --enable-static to build the static libraries or --enable-shared to
4109 build the shared libraries as well. To only build the shared libraries specify
4110 --disable-static in addition to --enable-shared.
4111 EOF
4112     exit 1
4113 fi
4114
4115 die_license_disabled() {
4116     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
4117 }
4118
4119 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
4120 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
4121 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
4122
4123 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
4124
4125 disabled optimizations || check_cflags -fomit-frame-pointer
4126
4127 enable_weak_pic() {
4128     disabled pic && return
4129     enable pic
4130     add_cppflags -DPIC
4131     case "$target_os" in
4132     mingw*|cygwin*)
4133         ;;
4134     *)
4135         add_cflags -fPIC
4136         ;;
4137     esac
4138     add_asflags  -fPIC
4139 }
4140
4141 enabled pic && enable_weak_pic
4142
4143 check_cc <<EOF || die "Symbol mangling check failed."
4144 int ff_extern;
4145 EOF
4146 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4147 extern_prefix=${sym%%ff_extern*}
4148
4149 check_cc <<EOF && enable_weak inline_asm
4150 void foo(void) { __asm__ volatile ("" ::); }
4151 EOF
4152
4153 _restrict=
4154 for restrict_keyword in restrict __restrict__ __restrict; do
4155     check_cc <<EOF && _restrict=$restrict_keyword && break
4156 void foo(char * $restrict_keyword p);
4157 EOF
4158 done
4159
4160 check_cc <<EOF && enable pragma_deprecated
4161 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4162 EOF
4163
4164 check_cc <<EOF && enable attribute_packed
4165 struct { int x; } __attribute__((packed)) x;
4166 EOF
4167
4168 check_cc <<EOF && enable attribute_may_alias
4169 union { int x; } __attribute__((may_alias)) x;
4170 EOF
4171
4172 check_cc <<EOF || die "endian test failed"
4173 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4174 EOF
4175 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4176
4177 check_gas() {
4178     log "check_gas using '$as' as AS"
4179     # :vararg is used on aarch64, arm and ppc altivec
4180     check_as <<EOF || return 1
4181 .macro m n, y:vararg=0
4182 \n: .int \y
4183 .endm
4184 m x
4185 EOF
4186     # .altmacro is only used in arm asm
4187     ! enabled arm || check_as <<EOF || return 1
4188 .altmacro
4189 EOF
4190     enable gnu_as
4191     return 0
4192 }
4193
4194 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4195     nogas=:
4196     enabled_any arm aarch64 && nogas=die
4197     enabled_all ppc altivec && nogas=warn
4198     as_noop=-v
4199
4200     case $as_type in
4201         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4202         gcc)  gaspp_as_type=gas ;;
4203         *)    gaspp_as_type=$as_type ;;
4204     esac
4205
4206     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4207
4208     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4209         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4210
4211     if ! check_gas ; then
4212         as=${gas:=$as}
4213         check_gas || \
4214             $nogas "GNU assembler not found, install/update gas-preprocessor"
4215     fi
4216
4217     check_as <<EOF && enable as_func
4218 .func test
4219 .endfunc
4220 EOF
4221 fi
4222
4223 check_inline_asm inline_asm_labels '"1:\n"'
4224
4225 if enabled aarch64; then
4226     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4227     # internal assembler in clang 3.3 does not support this instruction
4228     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4229     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4230
4231     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4232
4233 elif enabled alpha; then
4234
4235     check_cflags -mieee
4236
4237 elif enabled arm; then
4238
4239     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4240     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4241     enabled thumb && check_cflags -mthumb || check_cflags -marm
4242
4243     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4244         enable vfp_args
4245     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4246         enable vfp_args
4247     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4248         case "${cross_prefix:-$cc}" in
4249             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4250             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4251 __asm__ (".eabi_attribute 28, 1");
4252 int main(void) { return 0; }
4253 EOF
4254         esac
4255         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4256     fi
4257
4258     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4259     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4260     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4261     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4262     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4263     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4264
4265     [ $target_os = linux ] || [ $target_os = android ] ||
4266         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4267             $ARCH_EXT_LIST_ARM
4268
4269     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4270
4271     check_as <<EOF && enable as_dn_directive
4272 ra .dn d0.i16
4273 .unreq ra
4274 EOF
4275     check_as <<EOF && enable as_fpu_directive
4276 .fpu neon
4277 EOF
4278
4279     # llvm's integrated assembler supports .object_arch from llvm 3.5
4280     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4281 .object_arch armv4
4282 EOF
4283
4284     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4285
4286 elif enabled mips; then
4287
4288     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4289
4290     # make sure that only an instruction set is enabled
4291     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4292
4293     if enabled mips64; then
4294         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4295             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4296                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4297     else
4298         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4299             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4300                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4301     fi
4302
4303 elif enabled parisc; then
4304
4305     if enabled gcc; then
4306         case $($cc -dumpversion) in
4307             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4308         esac
4309     fi
4310
4311 elif enabled ppc; then
4312
4313     enable local_aligned_8 local_aligned_16 local_aligned_32
4314
4315     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4316     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4317     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4318     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4319
4320     # AltiVec flags: The FSF version of GCC differs from the Apple version
4321     if enabled altivec; then
4322         check_cflags -maltivec -mabi=altivec &&
4323         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4324         check_cflags -faltivec
4325
4326         # check if our compiler supports Motorola AltiVec C API
4327         check_cc <<EOF || disable altivec
4328 $inc_altivec_h
4329 int main(void) {
4330     vector signed int v1 = (vector signed int) { 0 };
4331     vector signed int v2 = (vector signed int) { 1 };
4332     v1 = vec_add(v1, v2);
4333     return 0;
4334 }
4335 EOF
4336
4337         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4338     fi
4339
4340     if enabled vsx; then
4341         check_cflags -mvsx &&
4342         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4343     fi
4344
4345     if enabled power8; then
4346         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4347     fi
4348
4349 elif enabled x86; then
4350
4351     check_builtin rdtsc    intrin.h   "__rdtsc()"
4352     check_builtin mm_empty mmintrin.h "_mm_empty()"
4353
4354     enable local_aligned_8 local_aligned_16 local_aligned_32
4355
4356     # check whether EBP is available on x86
4357     # As 'i' is stored on the stack, this program will crash
4358     # if the base pointer is used to access it because the
4359     # base pointer is cleared in the inline assembly code.
4360     check_exec_crash <<EOF && enable ebp_available
4361 volatile int i=0;
4362 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4363 return i;
4364 EOF
4365
4366     # check whether EBX is available on x86
4367     check_inline_asm ebx_available '""::"b"(0)' &&
4368         check_inline_asm ebx_available '"":::"%ebx"'
4369
4370     # check whether xmm clobbers are supported
4371     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4372
4373     # check whether binutils is new enough to compile SSSE3/MMXEXT
4374     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4375     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4376
4377     if ! disabled_any asm mmx yasm; then
4378         if check_cmd $yasmexe --version; then
4379             enabled x86_64 && yasm_extra="-m amd64"
4380             yasm_debug="-g dwarf2"
4381         elif check_cmd nasm -v; then
4382             yasmexe=nasm
4383             yasm_debug="-g -F dwarf"
4384             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4385         fi
4386
4387         YASMFLAGS="-f $objformat $yasm_extra"
4388         enabled pic               && append YASMFLAGS "-DPIC"
4389         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4390         case "$objformat" in
4391             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4392         esac
4393
4394         check_yasm "movbe ecx, [5]" && enable yasm ||
4395             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4396         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4397         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4398         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4399         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4400         check_yasm "CPU amdnop" || disable cpunop
4401     fi
4402
4403     case "$cpu" in
4404         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4405             disable fast_clz
4406         ;;
4407     esac
4408
4409 fi
4410
4411 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4412
4413 check_ldflags -Wl,--as-needed
4414
4415 if check_func dlopen; then
4416     ldl=
4417 elif check_func dlopen -ldl; then
4418     ldl=-ldl
4419 fi
4420
4421 if ! disabled network; then
4422     check_func getaddrinfo $network_extralibs
4423     check_func inet_aton $network_extralibs
4424
4425     check_type netdb.h "struct addrinfo"
4426     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4427     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4428     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4429     check_type poll.h "struct pollfd"
4430     check_type netinet/sctp.h "struct sctp_event_subscribe"
4431     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4432     check_type netinet/in.h "struct sockaddr_in6"
4433     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4434     check_type "sys/types.h sys/socket.h" socklen_t
4435
4436     # Prefer arpa/inet.h over winsock2
4437     if check_header arpa/inet.h ; then
4438         check_func closesocket
4439     elif check_header winsock2.h ; then
4440         check_func_headers winsock2.h closesocket -lws2 &&
4441             network_extralibs="-lws2" ||
4442         { check_func_headers winsock2.h closesocket -lws2_32 &&
4443             network_extralibs="-lws2_32"; } || disable winsock2_h network
4444         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4445
4446         check_type ws2tcpip.h socklen_t
4447         check_type ws2tcpip.h "struct addrinfo"
4448         check_type ws2tcpip.h "struct group_source_req"
4449         check_type ws2tcpip.h "struct ip_mreq_source"
4450         check_type ws2tcpip.h "struct ipv6_mreq"
4451         check_type winsock2.h "struct pollfd"
4452         check_struct winsock2.h "struct sockaddr" sa_len
4453         check_type ws2tcpip.h "struct sockaddr_in6"
4454         check_type ws2tcpip.h "struct sockaddr_storage"
4455     else
4456         disable network
4457     fi
4458 fi
4459
4460 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4461 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4462 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4463 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4464
4465 case "$custom_allocator" in
4466     jemalloc)
4467         # jemalloc by default does not use a prefix
4468         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4469     ;;
4470     tcmalloc)
4471         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
4472         malloc_prefix=tc_
4473     ;;
4474 esac
4475
4476 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4477 check_func  ${malloc_prefix}memalign            && enable memalign
4478 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4479
4480 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4481     check_func_headers time.h clock_gettime ||
4482         { check_lib time.h clock_gettime -lrt && LIBRT="-lrt"; }
4483
4484 check_func  fcntl
4485 check_func  fork
4486 check_func  gethrtime
4487 check_func  getopt
4488 check_func  getrusage
4489 check_func  gettimeofday
4490 check_func  gmtime_r
4491 check_func  isatty
4492 check_func  localtime_r
4493 check_func  mach_absolute_time
4494 check_func  mkstemp
4495 check_func  mmap
4496 check_func  mprotect
4497 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4498 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4499 check_func  sched_getaffinity
4500 check_func  setrlimit
4501 check_func  strerror_r
4502 check_func  sysconf
4503 check_func  sysctl
4504 check_func  usleep
4505
4506 check_func_headers io.h setmode
4507 check_func_headers stdlib.h getenv
4508
4509 check_func_headers windows.h CoTaskMemFree -lole32
4510 check_func_headers windows.h GetProcessAffinityMask
4511 check_func_headers windows.h GetProcessTimes
4512 check_func_headers windows.h GetSystemTimeAsFileTime
4513 check_func_headers windows.h LoadLibrary
4514 check_func_headers windows.h MapViewOfFile
4515 check_func_headers windows.h SetConsoleTextAttribute
4516 check_func_headers windows.h Sleep
4517 check_func_headers windows.h VirtualAlloc
4518 check_struct windows.h "CONDITION_VARIABLE" Ptr
4519
4520 check_header direct.h
4521 check_header dlfcn.h
4522 check_header d3d11.h
4523 check_header dxva.h
4524 check_header dxva2api.h
4525 check_header io.h
4526 check_header mach/mach_time.h
4527 check_header malloc.h
4528 check_header poll.h
4529 check_header sys/mman.h
4530 check_header sys/param.h
4531 check_header sys/resource.h
4532 check_header sys/select.h
4533 check_header sys/time.h
4534 check_header sys/un.h
4535 check_header unistd.h
4536 check_header valgrind/valgrind.h
4537 check_header vdpau/vdpau.h
4538 check_header vdpau/vdpau_x11.h
4539 check_header VideoDecodeAcceleration/VDADecoder.h
4540 check_header windows.h
4541 check_header X11/extensions/XvMClib.h
4542
4543 # it seems there are versions of clang in some distros that try to use the
4544 # gcc headers, which explodes for stdatomic
4545 # so we also check that atomics actually work here
4546 check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4547
4548 check_lib "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4549 check_lib "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4550 check_lib "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4551
4552 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4553
4554 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4555 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4556 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4557
4558 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4559 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4560 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4561 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4562 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4563
4564 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4565
4566 if ! disabled w32threads && ! enabled pthreads; then
4567     check_func_headers "windows.h process.h" _beginthreadex &&
4568         enable w32threads || disable w32threads
4569 fi
4570
4571 # check for some common methods of building with pthread support
4572 # do this before the optional library checks as some of them require pthreads
4573 if ! disabled pthreads && ! enabled w32threads; then
4574     enable pthreads
4575     if check_func pthread_join -pthread; then
4576         add_cflags -pthread
4577         add_extralibs -pthread
4578     elif check_func pthread_join -pthreads; then
4579         add_cflags -pthreads
4580         add_extralibs -pthreads
4581     elif check_func pthread_join -lpthreadGC2; then
4582         add_extralibs -lpthreadGC2
4583     elif check_lib pthread.h pthread_join -lpthread; then
4584         :
4585     elif ! check_func pthread_join; then
4586         disable pthreads
4587     fi
4588 fi
4589
4590 enabled pthreads &&
4591     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
4592
4593 disabled  zlib || check_lib  zlib.h      zlibVersion -lz   || disable  zlib
4594 disabled bzlib || check_lib bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4595
4596 check_lib math.h sin -lm && LIBM="-lm"
4597
4598 atan2f_args=2
4599 ldexpf_args=2
4600 powf_args=2
4601
4602 for func in $MATH_FUNCS; do
4603     eval check_mathfunc $func \${${func}_args:-1}
4604 done
4605
4606 # these are off by default, so fail if requested and not available
4607 enabled avisynth          && { check_lib "avisynth/avisynth_c.h windows.h" LoadLibrary ||
4608                                check_lib "avxsynth/avxsynth_c.h dlfcn.h" dlopen -ldl   ||
4609                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4610 enabled cuda              && check_lib cuda.h cuInit -lcuda
4611 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4612 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4613 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4614 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4615 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4616 enabled libfdk_aac        && require_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4617 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4618 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4619 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4620                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4621                                done || die "ERROR: libgsm not found"; }
4622 enabled libhdcd           && require_pkg_config libhdcd "hdcd/hdcd_simple.h" hdcd_new
4623 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4624 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4625 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
4626 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4627 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4628 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4629 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4630 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4631 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
4632 enabled libopenjpeg       && { check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4633                                require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4634 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4635 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4636 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4637 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4638 enabled libsnappy         && require snappy snappy-c.h snappy_compress -lsnappy
4639 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4640 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4641 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4642 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4643 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4644 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4645 enabled libvpx            && require_pkg_config "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version && {
4646     enabled libvpx_vp8_decoder && {
4647         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
4648             disable libvpx_vp8_decoder;
4649     }
4650     enabled libvpx_vp8_encoder && {
4651         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
4652             disable libvpx_vp8_encoder;
4653     }
4654     enabled libvpx_vp9_decoder && {
4655         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
4656             disable libvpx_vp9_decoder;
4657     }
4658     enabled libvpx_vp9_encoder && {
4659         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
4660             disable libvpx_vp9_encoder;
4661     }
4662     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
4663         die "libvpx enabled but no supported decoders found"
4664     fi
4665 }
4666 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4667 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4668 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4669                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4670                                die "ERROR: libx264 version must be >= 0.118."; } &&
4671                              { check_cpp_condition x264.h "X264_MPEG2" &&
4672                                enable libx262; }
4673 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
4674                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
4675                                die "ERROR: libx265 version must be >= 57."; }
4676 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4677 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4678 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4679                                 { ! enabled cross_compile && {
4680                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
4681                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
4682                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
4683                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
4684                                die "ERROR: mmal not found"; }
4685 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
4686 enabled omx_rpi && enable omx
4687 enabled omx               && { check_header OMX_Core.h ||
4688                                 { ! enabled cross_compile && enabled omx_rpi && {
4689                                     add_cflags -isystem/opt/vc/include/IL ; }
4690                                 check_header OMX_Core.h ; } ||
4691                                die "ERROR: OpenMAX IL headers not found"; }
4692 enabled openssl           && { check_pkg_config openssl openssl/ssl.h SSL_library_init && {
4693                                add_cflags $openssl_cflags && add_extralibs $openssl_libs; }||
4694                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4695                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4696                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4697                                die "ERROR: openssl not found"; }
4698
4699 if enabled gnutls; then
4700     { check_lib gmp.h mpz_export -lgmp && enable gmp; } ||
4701     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4702 fi
4703
4704 # libdc1394 check
4705 if enabled libdc1394; then
4706     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
4707         enable libdc1394_2; } ||
4708     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4709         enable libdc1394_1; } ||
4710     die "ERROR: No version of libdc1394 found "
4711 fi
4712
4713 if enabled nvenc; then
4714     check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."
4715     check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6" ||
4716         die "ERROR: NVENC API version 5 or older is not supported"
4717 fi
4718
4719 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4720     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4721     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4722     enable sdl
4723 fi
4724
4725 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man
4726 ! disabled texi2html && check_cmd texi2html -version && enable texi2html || disable texi2html
4727
4728 check_header linux/fb.h
4729 check_header linux/videodev2.h
4730 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4731
4732 check_header AVFoundation/AVFoundation.h &&
4733     check_objcflags -fobjc-arc &&
4734     add_extralibs -framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia ||
4735     disable AVFoundation_AVFoundation_h
4736
4737 check_header sys/videoio.h
4738
4739 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4740 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4741 # w32api 3.12 had it defined wrong
4742 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4743
4744 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4745 { check_header dev/bktr/ioctl_meteor.h &&
4746   check_header dev/bktr/ioctl_bt848.h; } ||
4747 { check_header machine/ioctl_meteor.h &&
4748   check_header machine/ioctl_bt848.h; } ||
4749 { check_header dev/video/meteor/ioctl_meteor.h &&
4750   check_header dev/video/bktr/ioctl_bt848.h; } ||
4751 check_header dev/ic/bt8xx.h
4752
4753 check_header sndio.h
4754 check_header sys/soundcard.h
4755 check_header soundcard.h
4756
4757 enabled_any alsa_indev alsa_outdev &&
4758     check_lib alsa/asoundlib.h snd_pcm_htimestamp -lasound
4759
4760 enabled jack_indev && check_lib jack/jack.h jack_client_open -ljack &&
4761     check_func jack_port_get_latency_range -ljack
4762
4763 enabled_any sndio_indev sndio_outdev && check_lib sndio.h sio_open -lsndio
4764
4765 if enabled libcdio; then
4766     check_lib "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4767     check_lib "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4768     die "ERROR: No usable libcdio/cdparanoia found"
4769 fi
4770
4771 check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4772
4773 if enabled libxcb; then
4774     check_pkg_config xcb-shape xcb/shape.h xcb_shape_rectangles || {
4775         enabled libxcb && die "ERROR: libxcb not found";
4776     } && enable libxcb
4777
4778     disabled libxcb_shm ||
4779         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
4780             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
4781         } && check_header sys/shm.h && enable libxcb_shm
4782
4783     disabled libxcb_xfixes ||
4784         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
4785             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
4786         } && enable libxcb_xfixes
4787
4788     add_cflags "$xcb_event_cflags $xcb_shm_cflags $xcb_xfixes_cflags"
4789     add_extralibs "$xcb_event_libs $xcb_shm_libs $xcb_xfixes_libs"
4790 fi
4791
4792 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4793
4794 enabled vaapi &&
4795     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
4796     disable vaapi
4797
4798 if enabled vaapi ; then
4799     enabled xlib &&
4800     check_lib "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
4801     enable vaapi_x11
4802
4803     check_lib "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
4804     enable vaapi_drm
4805 fi
4806
4807 enabled vdpau &&
4808     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4809     disable vdpau
4810
4811 enabled vdpau && enabled xlib &&
4812     check_lib "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4813     enable vdpau_x11
4814
4815 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4816
4817 # add some useful compiler flags if supported
4818 check_cflags -Wdeclaration-after-statement
4819 check_cflags -Wall
4820 check_cflags -Wdisabled-optimization
4821 check_cflags -Wpointer-arith
4822 check_cflags -Wredundant-decls
4823 check_cflags -Wwrite-strings
4824 check_cflags -Wtype-limits
4825 check_cflags -Wundef
4826 check_cflags -Wmissing-prototypes
4827 check_cflags -Wstrict-prototypes
4828 enabled extra_warnings && check_cflags -Winline
4829 enabled extra_warnings && check_cflags -Wcast-qual
4830
4831 check_disable_warning(){
4832     warning_flag=-W${1#-Wno-}
4833     test_cflags $warning_flag && add_cflags $1
4834 }
4835
4836 check_disable_warning -Wno-parentheses
4837 check_disable_warning -Wno-switch
4838 check_disable_warning -Wno-format-zero-length
4839 check_disable_warning -Wno-pointer-sign
4840
4841 # add some linker flags
4842 check_ldflags -Wl,--warn-common
4843 check_ldflags -Wl,-rpath-link=libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4844 enabled rpath && add_ldexeflags -Wl,-rpath,$libdir
4845 test_ldflags -Wl,-Bsymbolic && app