configure: Move hardware-accelerated codec deps out of hwaccel section
[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:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [config.log]
81   --disable-logging        do not log configure debug information
82   --prefix=PREFIX          install in PREFIX [$prefix_default]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --enable-rpath           use rpath when linking programs (USE WITH CARE)
91
92 Licensing options:
93   --enable-gpl             allow use of GPL code, the resulting libs
94                            and binaries will be under GPL [no]
95   --enable-version3        upgrade (L)GPL to version 3 [no]
96   --enable-nonfree         allow use of nonfree code, the resulting libs
97                            and binaries will be unredistributable [no]
98
99 Configuration options:
100   --disable-static         do not build static libraries [no]
101   --enable-shared          build shared libraries [no]
102   --enable-small           optimize for size instead of speed
103   --enable-runtime-cpudetect detect CPU capabilities at runtime (bigger binary)
104   --enable-gray            enable full grayscale support (slower color)
105   --disable-swscale-alpha  disable alpha channel support in swscale
106   --disable-all            disable building components, libraries and programs
107
108 Program options:
109   --disable-programs       do not build command line programs
110   --disable-avconv         disable avconv build
111   --disable-avplay         disable avplay build
112   --disable-avprobe        disable avprobe build
113   --disable-avserver       deprecated, does nothing
114
115 Component options:
116   --disable-doc            do not build documentation
117   --disable-pod2man        do not build manual pages
118   --disable-texi2html      do not build HTML documentation
119   --disable-avdevice       disable libavdevice build
120   --disable-avcodec        disable libavcodec build
121   --disable-avformat       disable libavformat build
122   --disable-avutil         disable libavutil build
123   --disable-swscale        disable libswscale build
124   --disable-avfilter       disable video filter support [no]
125   --disable-avresample     disable libavresample build [no]
126   --disable-pthreads       disable pthreads [auto]
127   --disable-w32threads     disable Win32 threads [auto]
128   --disable-network        disable network support [no]
129   --disable-dct            disable DCT code
130   --disable-error-resilience disable error resilience code
131   --disable-lsp            disable LSP code
132   --disable-lzo            disable LZO decoder code
133   --disable-mdct           disable MDCT code
134   --disable-rdft           disable RDFT code
135   --disable-fft            disable FFT code
136   --disable-faan           disable floating point AAN (I)DCT code
137
138 Individual component options:
139   --disable-everything     disable all components listed below
140   --disable-encoder=NAME   disable encoder NAME
141   --enable-encoder=NAME    enable encoder NAME
142   --disable-encoders       disable all encoders
143   --disable-decoder=NAME   disable decoder NAME
144   --enable-decoder=NAME    enable decoder NAME
145   --disable-decoders       disable all decoders
146   --disable-hwaccel=NAME   disable hwaccel NAME
147   --enable-hwaccel=NAME    enable hwaccel NAME
148   --disable-hwaccels       disable all hwaccels
149   --disable-muxer=NAME     disable muxer NAME
150   --enable-muxer=NAME      enable muxer NAME
151   --disable-muxers         disable all muxers
152   --disable-demuxer=NAME   disable demuxer NAME
153   --enable-demuxer=NAME    enable demuxer NAME
154   --disable-demuxers       disable all demuxers
155   --enable-parser=NAME     enable parser NAME
156   --disable-parser=NAME    disable parser NAME
157   --disable-parsers        disable all parsers
158   --enable-bsf=NAME        enable bitstream filter NAME
159   --disable-bsf=NAME       disable bitstream filter NAME
160   --disable-bsfs           disable all bitstream filters
161   --enable-protocol=NAME   enable protocol NAME
162   --disable-protocol=NAME  disable protocol NAME
163   --disable-protocols      disable all protocols
164   --enable-indev=NAME      enable input device NAME
165   --disable-indev=NAME     disable input device NAME
166   --disable-indevs         disable input devices
167   --enable-outdev=NAME     enable output device NAME
168   --disable-outdev=NAME    disable output device NAME
169   --disable-outdevs        disable output devices
170   --disable-devices        disable all devices
171   --enable-filter=NAME     enable filter NAME
172   --disable-filter=NAME    disable filter NAME
173   --disable-filters        disable all filters
174
175 External library support:
176
177   Using any of the following switches will allow Libav to link to the
178   corresponding external library. All the components depending on that library
179   will become enabled, if all their other dependencies are met and they are not
180   explicitly disabled. E.g. --enable-libwavpack will enable linking to
181   libwavpack and allow the libwavpack encoder to be built, unless it is
182   specifically disabled with --disable-encoder=libwavpack.
183
184   Note that only the system libraries are auto-detected. All the other external
185   libraries must be explicitly enabled.
186
187   Also note that the following help text describes the purpose of the libraries
188   themselves, not all their features will necessarily be usable by Libav.
189
190   --enable-avisynth          video frameserver
191   --enable-bzlib             bzip2 compression [autodetect]
192   --enable-frei0r            video filtering plugins
193   --enable-gnutls            crypto
194   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
195   --enable-libcdio           audio CD input
196   --enable-libdc1394         IEEE 1394/Firewire camera input
197   --enable-libdcadec         DCA audio decoding
198   --enable-libfaac           AAC audio encoding
199   --enable-libfdk-aac        AAC audio encoding/decoding
200   --enable-libfontconfig     font configuration and management
201   --enable-libfreetype       font rendering
202   --enable-libgsm            GSM audio encoding/decoding
203   --enable-libhdcd           HDCD decoding filter
204   --enable-libilbc           ILBC audio encoding/decoding
205   --enable-libkvazaar        HEVC video encoding
206   --enable-libmp3lame        MP3 audio encoding
207   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
208   --enable-libopencore-amrwb AMR-WB audio decoding
209   --enable-libopencv         computer vision
210   --enable-libopenh264       H.264 video encoding/decoding
211   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
212   --enable-libopus           Opus audio encoding/decoding
213   --enable-libpulse          Pulseaudio sound server
214   --enable-librtmp           RTMP streaming
215   --enable-libschroedinger   Dirac video encoding/decoding
216   --enable-libsnappy         snappy compression
217   --enable-libspeex          Speex audio encoding/decoding
218   --enable-libtheora         Theora video encoding/decoding
219   --enable-libtwolame        MP2 audio encoding
220   --enable-libvo-aacenc      AAC audio encoding
221   --enable-libvo-amrwbenc    AMR-WB audio encoding
222   --enable-libvorbis         Vorbis audio encoding/decoding
223   --enable-libvpx            VP* video encoding/decoding
224   --enable-libwavpack        Wavpack audio encoding/decoding
225   --enable-libwebp           WebP image encoding/decoding
226   --enable-libx264           H.264 video encoding
227   --enable-libx265           HEVC video encoding
228   --enable-libxavs           Chinese AVS video encoding
229   --enable-libxcb            X window system protocol communication
230   --enable-libxcb-shm        X11 shm communication [auto]
231   --enable-libxcb-xfixes     X11 mouse rendering [auto]
232   --enable-libxvid           MPEG-4 ASP video encoding
233   --enable-openssl           crypto
234   --enable-zlib              compression [autodetect]
235
236   The following libraries provide various hardware acceleration features:
237   --enable-cuda    Nvidia CUDA (dynamically linked)
238   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
239   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
240   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
241   --enable-libnpp  Nvidia CUDA processing
242   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
243   --enable-nvenc   Nvidia video encoding
244   --enable-omx     OpenMAX IL
245   --enable-omx-rpi OpenMAX IL for Raspberry Pi
246   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
247   --enable-vda     Apple Video Decode Acceleration [auto]
248   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
249
250 Toolchain options:
251   --arch=ARCH              select architecture [$arch]
252   --cpu=CPU                select the minimum required CPU (affects
253                            instruction selection, may crash on older CPUs)
254   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
255   --enable-cross-compile   assume a cross-compiler is used
256   --sysroot=PATH           root of cross-build tree
257   --sysinclude=PATH        location of cross-build system headers
258   --target-os=OS           compiler targets OS [$target_os]
259   --target-exec=CMD        command to run executables on target
260   --target-path=DIR        path to view of build directory on target
261   --target-samples=DIR     path to samples directory on target
262   --toolchain=NAME         set tool defaults according to NAME
263   --nm=NM                  use nm tool
264   --ar=AR                  use archive tool AR [$ar_default]
265   --as=AS                  use assembler AS [$as_default]
266   --cc=CC                  use C compiler CC [$cc_default]
267   --objcc=OCC              use ObjC compiler OCC [$cc_default]
268   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
269   --ld=LD                  use linker LD
270   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
271   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
272   --host-cc=HOSTCC         use host C compiler HOSTCC
273   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
274   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
275   --host-ld=HOSTLD         use host linker HOSTLD
276   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
277   --host-libs=HLIBS        use libs HLIBS when linking for host
278   --host-os=OS             compiler host OS [$target_os]
279   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
280   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
281   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
282   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
283   --extra-libs=ELIBS       add ELIBS [$ELIBS]
284   --extra-version=STRING   version string suffix []
285   --optflags=OPTFLAGS      override optimization-related compiler flags
286   --build-suffix=SUFFIX    library name suffix []
287   --enable-pic             build position-independent code
288   --enable-thumb           compile for Thumb instruction set
289   --enable-lto             use link-time optimization
290   --env="ENV=override"     override the environment variables
291
292 Advanced options (experts only):
293   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
294   --custom-allocator=NAME  use a supported custom allocator
295   --disable-symver         disable symbol versioning
296   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
297   --disable-safe-bitstream-reader
298                            disable buffer boundary checking in bitreaders
299                            (faster, but may crash)
300   --enable-sram            allow use of on-chip SRAM
301
302 Optimization options (experts only):
303   --disable-asm            disable all assembly optimizations
304   --disable-altivec        disable AltiVec optimizations
305   --disable-vsx            disable VSX optimizations
306   --disable-power8         disable POWER8 optimizations
307   --disable-amd3dnow       disable 3DNow! optimizations
308   --disable-amd3dnowext    disable 3DNow! extended optimizations
309   --disable-mmx            disable MMX optimizations
310   --disable-mmxext         disable MMXEXT optimizations
311   --disable-sse            disable SSE optimizations
312   --disable-sse2           disable SSE2 optimizations
313   --disable-sse3           disable SSE3 optimizations
314   --disable-ssse3          disable SSSE3 optimizations
315   --disable-sse4           disable SSE4 optimizations
316   --disable-sse42          disable SSE4.2 optimizations
317   --disable-avx            disable AVX optimizations
318   --disable-xop            disable XOP optimizations
319   --disable-fma3           disable FMA3 optimizations
320   --disable-fma4           disable FMA4 optimizations
321   --disable-avx2           disable AVX2 optimizations
322   --disable-armv5te        disable armv5te optimizations
323   --disable-armv6          disable armv6 optimizations
324   --disable-armv6t2        disable armv6t2 optimizations
325   --disable-vfp            disable VFP optimizations
326   --disable-neon           disable NEON optimizations
327   --disable-inline-asm     disable use of inline assembly
328   --disable-yasm           disable use of nasm/yasm assembly
329
330 Developer options (useful when working on Libav itself):
331   --disable-debug          disable debugging symbols
332   --enable-debug=LEVEL     set the debug level [$debuglevel]
333   --disable-optimizations  disable compiler optimizations
334   --enable-extra-warnings  enable more compiler warnings
335   --samples=PATH           location of test samples for FATE, if not set use
336                            \$LIBAV_SAMPLES at make invocation time.
337   --enable-neon-clobber-test check NEON registers for clobbering (should be
338                            used only for debugging purposes)
339   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
340                            should be used only for debugging purposes)
341   --enable-random          randomly enable/disable components
342   --disable-random
343   --enable-random=LIST     randomly enable/disable specific components or
344   --disable-random=LIST    component groups. LIST is a comma-separated list
345                            of NAME[:PROB] entries where NAME is a component
346                            (group) and PROB the probability associated with
347                            NAME (default 0.5).
348   --random-seed=VALUE      seed value for --enable/disable-random
349   --disable-valgrind-backtrace do not print a backtrace under Valgrind
350                            (only applies to --disable-optimizations builds)
351
352 NOTE: Object files are built at the place where configure is launched.
353 EOF
354   exit 0
355 }
356
357 quotes='""'
358
359 log(){
360     echo "$@" >> $logfile
361 }
362
363 log_file(){
364     log BEGIN $1
365     i=1
366     while read line; do
367         printf '%5s   %s\n' "${i}" "${line}"
368         i=$(($i+1))
369     done < $1 >> $logfile
370     log END $1
371 }
372
373 echolog(){
374     log "$@"
375     echo "$@"
376 }
377
378 warn(){
379     log "WARNING: $*"
380     WARNINGS="${WARNINGS}WARNING: $*\n"
381 }
382
383 die(){
384     echolog "$@"
385     cat <<EOF
386
387 If you think configure made a mistake, make sure you are using the latest
388 version from Git.  If the latest version fails, report the problem to the
389 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
390 EOF
391     if disabled logging; then
392         cat <<EOF
393 Rerun configure with logging enabled (do not use --disable-logging), and
394 include the log this produces with your report.
395 EOF
396     else
397         cat <<EOF
398 Include the log file "$logfile" produced by configure as this will help
399 solving the problem.
400 EOF
401     fi
402     exit 1
403 }
404
405 # Avoid locale weirdness, besides we really just want to translate ASCII.
406 toupper(){
407     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
408 }
409
410 tolower(){
411     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
412 }
413
414 c_escape(){
415     echo "$*" | sed 's/["\\]/\\\0/g'
416 }
417
418 sh_quote(){
419     v=$(echo "$1" | sed "s/'/'\\\\''/g")
420     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
421     echo "$v"
422 }
423
424 cleanws(){
425     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
426 }
427
428 filter(){
429     pat=$1
430     shift
431     for v; do
432         eval "case $v in $pat) echo $v ;; esac"
433     done
434 }
435
436 filter_out(){
437     pat=$1
438     shift
439     for v; do
440         eval "case $v in $pat) ;; *) echo $v ;; esac"
441     done
442 }
443
444 map(){
445     m=$1
446     shift
447     for v; do eval $m; done
448 }
449
450 add_suffix(){
451     suffix=$1
452     shift
453     for v; do echo ${v}${suffix}; done
454 }
455
456 set_all(){
457     value=$1
458     shift
459     for var in $*; do
460         eval $var=$value
461     done
462 }
463
464 set_weak(){
465     value=$1
466     shift
467     for var; do
468         eval : \${$var:=$value}
469     done
470 }
471
472 sanitize_var_name(){
473     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
474 }
475
476 set_safe(){
477     var=$1
478     shift
479     eval $(sanitize_var_name "$var")='$*'
480 }
481
482 get_safe(){
483     eval echo \$$(sanitize_var_name "$1")
484 }
485
486 pushvar(){
487     for pvar in $*; do
488         eval level=\${${pvar}_level:=0}
489         eval ${pvar}_${level}="\$$pvar"
490         eval ${pvar}_level=$(($level+1))
491     done
492 }
493
494 popvar(){
495     for pvar in $*; do
496         eval level=\${${pvar}_level:-0}
497         test $level = 0 && continue
498         eval level=$(($level-1))
499         eval $pvar="\${${pvar}_${level}}"
500         eval ${pvar}_level=$level
501         eval unset ${pvar}_${level}
502     done
503 }
504
505 enable(){
506     set_all yes $*
507 }
508
509 disable(){
510     set_all no $*
511 }
512
513 enable_weak(){
514     set_weak yes $*
515 }
516
517 disable_weak(){
518     set_weak no $*
519 }
520
521 enable_safe(){
522     for var; do
523         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
524     done
525 }
526
527 disable_safe(){
528     for var; do
529         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
530     done
531 }
532
533 do_enable_deep(){
534     for var; do
535         enabled $var && continue
536         eval sel="\$${var}_select"
537         eval sgs="\$${var}_suggest"
538         pushvar var sgs
539         enable_deep $sel
540         popvar sgs
541         enable_deep_weak $sgs
542         popvar var
543     done
544 }
545
546 enable_deep(){
547     do_enable_deep $*
548     enable $*
549 }
550
551 enable_deep_weak(){
552     for var; do
553         disabled $var && continue
554         pushvar var
555         do_enable_deep $var
556         popvar var
557         enable_weak $var
558     done
559 }
560
561 enabled(){
562     test "${1#!}" = "$1" && op== || op=!=
563     eval test "x\$${1#!}" $op "xyes"
564 }
565
566 disabled(){
567     test "${1#!}" = "$1" && op== || op=!=
568     eval test "x\$${1#!}" $op "xno"
569 }
570
571 enabled_all(){
572     for opt; do
573         enabled $opt || return 1
574     done
575 }
576
577 disabled_all(){
578     for opt; do
579         disabled $opt || return 1
580     done
581 }
582
583 enabled_any(){
584     for opt; do
585         enabled $opt && return 0
586     done
587 }
588
589 disabled_any(){
590     for opt; do
591         disabled $opt && return 0
592     done
593     return 1
594 }
595
596 set_default(){
597     for opt; do
598         eval : \${$opt:=\$${opt}_default}
599     done
600 }
601
602 is_in(){
603     value=$1
604     shift
605     for var in $*; do
606         [ $var = $value ] && return 0
607     done
608     return 1
609 }
610
611 do_check_deps(){
612     for cfg; do
613         cfg="${cfg#!}"
614         enabled ${cfg}_checking && die "Circular dependency for $cfg."
615         disabled ${cfg}_checking && continue
616         enable ${cfg}_checking
617         append allopts $cfg
618
619         eval dep_all="\$${cfg}_deps"
620         eval dep_any="\$${cfg}_deps_any"
621         eval dep_sel="\$${cfg}_select"
622         eval dep_sgs="\$${cfg}_suggest"
623         eval dep_ifa="\$${cfg}_if"
624         eval dep_ifn="\$${cfg}_if_any"
625
626         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
627         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
628         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
629
630         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
631         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
632         enabled_all  $dep_all || disable $cfg
633         enabled_any  $dep_any || disable $cfg
634         disabled_any $dep_sel && disable $cfg
635
636         if enabled $cfg; then
637             enable_deep $dep_sel
638             enable_deep_weak $dep_sgs
639         fi
640
641         disable ${cfg}_checking
642     done
643 }
644
645 check_deps(){
646     unset allopts
647
648     do_check_deps "$@"
649
650     for cfg in $allopts; do
651         enabled $cfg || continue
652         eval dep_extralibs="\$${cfg}_extralibs"
653         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
654     done
655 }
656
657 print_config(){
658     pfx=$1
659     files=$2
660     shift 2
661     map 'eval echo "$v \${$v:-no}"' "$@" |
662     awk "BEGIN { split(\"$files\", files) }
663         {
664             c = \"$pfx\" toupper(\$1);
665             v = \$2;
666             sub(/yes/, 1, v);
667             sub(/no/,  0, v);
668             for (f in files) {
669                 file = files[f];
670                 if (file ~ /\\.h\$/) {
671                     printf(\"#define %s %d\\n\", c, v) >>file;
672                 } else if (file ~ /\\.asm\$/) {
673                     printf(\"%%define %s %d\\n\", c, v) >>file;
674                 } else if (file ~ /\\.mak\$/) {
675                     n = -v ? \"\" : \"!\";
676                     printf(\"%s%s=yes\\n\", n, c) >>file;
677                 }
678             }
679         }"
680 }
681
682 print_enabled(){
683     suf=$1
684     shift
685     for v; do
686         enabled $v && printf "%s\n" ${v%$suf}
687     done
688 }
689
690 append(){
691     var=$1
692     shift
693     eval "$var=\"\$$var $*\""
694 }
695
696 prepend(){
697     var=$1
698     shift
699     eval "$var=\"$* \$$var\""
700 }
701
702 unique(){
703     var=$1
704     uniq_list=""
705     for tok in $(eval echo \$$var); do
706         uniq_list="$(filter_out $tok $uniq_list) $tok"
707     done
708     eval "$var=\"${uniq_list}\""
709 }
710
711 add_cppflags(){
712     append CPPFLAGS "$@"
713 }
714
715 add_cflags(){
716     append CFLAGS $($cflags_filter "$@")
717 }
718
719 add_asflags(){
720     append ASFLAGS $($asflags_filter "$@")
721 }
722
723 add_objcflags(){
724     append OBJCFLAGS $($objcflags_filter "$@")
725 }
726
727 add_ldflags(){
728     append LDFLAGS $($ldflags_filter "$@")
729 }
730
731 add_ldexeflags(){
732     append LDEXEFLAGS $($ldflags_filter "$@")
733 }
734
735 add_stripflags(){
736     append STRIPFLAGS "$@"
737 }
738
739 add_extralibs(){
740     prepend extralibs $($ldflags_filter "$@")
741 }
742
743 add_host_cppflags(){
744     append host_cppflags "$@"
745 }
746
747 add_host_cflags(){
748     append host_cflags $($host_cflags_filter "$@")
749 }
750
751 add_host_ldflags(){
752     append host_ldflags $($host_ldflags_filter "$@")
753 }
754
755 add_compat(){
756     append compat_objs $1
757     shift
758     map 'add_cppflags -D$v' "$@"
759 }
760
761 check_cmd(){
762     log "$@"
763     "$@" >> $logfile 2>&1
764 }
765
766 cc_o(){
767     eval printf '%s\\n' $CC_O
768 }
769
770 cc_e(){
771     eval printf '%s\\n' $CC_E
772 }
773
774 check_cc(){
775     log check_cc "$@"
776     cat > $TMPC
777     log_file $TMPC
778     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
779 }
780
781 check_objcc(){
782     log check_objcc "$@"
783     cat > $TMPC
784     log_file $TMPC
785     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
786 }
787
788 check_cpp(){
789     log check_cpp "$@"
790     cat > $TMPC
791     log_file $TMPC
792     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
793 }
794
795 as_o(){
796     eval printf '%s\\n' $AS_O
797 }
798
799 check_as(){
800     log check_as "$@"
801     cat > $TMPS
802     log_file $TMPS
803     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
804 }
805
806 check_inline_asm(){
807     log check_inline_asm "$@"
808     name="$1"
809     code="$2"
810     shift 2
811     disable $name
812     check_cc "$@" <<EOF && enable $name
813 void foo(void){ __asm__ volatile($code); }
814 EOF
815 }
816
817 check_insn(){
818     log check_insn "$@"
819     check_inline_asm ${1}_inline "\"$2\""
820     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
821 }
822
823 check_yasm(){
824     log check_yasm "$@"
825     echo "$1" > $TMPS
826     log_file $TMPS
827     shift 1
828     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
829 }
830
831 ld_o(){
832     eval printf '%s\\n' $LD_O
833 }
834
835 check_ld(){
836     log check_ld "$@"
837     flags=$(filter_out '-l*' "$@")
838     libs=$(filter '-l*' "$@")
839     check_cc $($cflags_filter $flags) || return
840     flags=$($ldflags_filter $flags)
841     libs=$($ldflags_filter $libs)
842     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
843 }
844
845 print_include(){
846     hdr=$1
847     test "${hdr%.h}" = "${hdr}" &&
848         echo "#include $hdr"    ||
849         echo "#include <$hdr>"
850 }
851
852 check_code(){
853     log check_code "$@"
854     check=$1
855     headers=$2
856     code=$3
857     shift 3
858     {
859         for hdr in $headers; do
860             print_include $hdr
861         done
862         echo "int main(void) { $code; return 0; }"
863     } | check_$check "$@"
864 }
865
866 check_cppflags(){
867     log check_cppflags "$@"
868     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
869 int x;
870 EOF
871 }
872
873 test_cflags(){
874     log test_cflags "$@"
875     set -- $($cflags_filter "$@")
876     check_cc "$@" <<EOF
877 int x;
878 EOF
879 }
880
881 check_cflags(){
882     log check_cflags "$@"
883     test_cflags "$@" && add_cflags "$@"
884 }
885
886 test_objcflags(){
887     log test_objcflags "$@"
888     set -- $($objcflags_filter "$@")
889     check_objcc "$@" <<EOF
890 int x;
891 EOF
892 }
893
894 check_objcflags(){
895     log check_objcflags "$@"
896     test_objcflags "$@" && add_objcflags "$@"
897 }
898
899 test_ldflags(){
900     log test_ldflags "$@"
901     check_ld "$@" <<EOF
902 int main(void){ return 0; }
903 EOF
904 }
905
906 check_ldflags(){
907     log check_ldflags "$@"
908     test_ldflags "$@" && add_ldflags "$@"
909 }
910
911 test_stripflags(){
912     log test_stripflags "$@"
913     # call check_cc to get a fresh TMPO
914     check_cc <<EOF
915 int main(void) { return 0; }
916 EOF
917     check_cmd $strip $STRIPFLAGS "$@" $TMPO
918 }
919
920 check_stripflags(){
921     log check_stripflags "$@"
922     test_stripflags "$@" && add_stripflags "$@"
923 }
924
925 check_header(){
926     log check_header "$@"
927     header=$1
928     shift
929     disable_safe $header
930     check_cpp "$@" <<EOF && enable_safe $header
931 #include <$header>
932 int x;
933 EOF
934 }
935
936 check_func(){
937     log check_func "$@"
938     func=$1
939     shift
940     disable $func
941     check_ld "$@" <<EOF && enable $func
942 extern int $func();
943 int main(void){ $func(); }
944 EOF
945 }
946
947 check_mathfunc(){
948     log check_mathfunc "$@"
949     func=$1
950     narg=$2
951     shift 2
952     test $narg = 2 && args="f, g" || args="f"
953     disable $func
954     check_ld "$@" <<EOF && enable $func
955 #include <math.h>
956 float foo(float f, float g) { return $func($args); }
957 int main(void){ return 0; }
958 EOF
959 }
960
961 check_func_headers(){
962     log check_func_headers "$@"
963     headers=$1
964     funcs=$2
965     shift 2
966     {
967         for hdr in $headers; do
968             print_include $hdr
969         done
970         for func in $funcs; do
971             echo "long check_$func(void) { return (long) $func; }"
972         done
973         echo "int main(void) { return 0; }"
974     } | check_ld "$@" && enable $funcs && enable_safe $headers
975 }
976
977 check_cpp_condition(){
978     log check_cpp_condition "$@"
979     header=$1
980     condition=$2
981     shift 2
982     check_cpp "$@" <<EOF
983 #include <$header>
984 #if !($condition)
985 #error "unsatisfied condition: $condition"
986 #endif
987 EOF
988 }
989
990 test_cflags_cpp(){
991     log test_cflags_cpp "$@"
992     flags=$1
993     condition=$2
994     shift 2
995     set -- $($cflags_filter "$flags")
996     check_cpp "$@" <<EOF
997 #if !($condition)
998 #error "unsatisfied condition: $condition"
999 #endif
1000 EOF
1001 }
1002
1003 check_lib(){
1004     log check_lib "$@"
1005     headers="$1"
1006     funcs="$2"
1007     shift 2
1008     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1009 }
1010
1011 check_pkg_config(){
1012     log check_pkg_config "$@"
1013     pkg="$1"
1014     headers="$2"
1015     funcs="$3"
1016     shift 3
1017     check_cmd $pkg_config --exists --print-errors $pkg || return
1018     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1019     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1020     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1021         set_safe "${pkg}_cflags" $pkg_cflags   &&
1022         set_safe "${pkg}_libs"   $pkg_libs
1023 }
1024
1025 check_exec(){
1026     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1027 }
1028
1029 check_exec_crash(){
1030     log check_exec_crash "$@"
1031     code=$(cat)
1032
1033     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1034     # are safe but may not be available everywhere.  Thus we use
1035     # raise(SIGTERM) instead.  The check is run in a subshell so we
1036     # can redirect the "Terminated" message from the shell.  SIGBUS
1037     # is not defined by standard C so it is used conditionally.
1038
1039     (check_exec "$@") >> $logfile 2>&1 <<EOF
1040 #include <signal.h>
1041 static void sighandler(int sig){
1042     raise(SIGTERM);
1043 }
1044 int foo(void){
1045     $code
1046 }
1047 int (*func_ptr)(void) = foo;
1048 int main(void){
1049     signal(SIGILL, sighandler);
1050     signal(SIGFPE, sighandler);
1051     signal(SIGSEGV, sighandler);
1052 #ifdef SIGBUS
1053     signal(SIGBUS, sighandler);
1054 #endif
1055     return func_ptr();
1056 }
1057 EOF
1058 }
1059
1060 check_type(){
1061     log check_type "$@"
1062     headers=$1
1063     type=$2
1064     shift 2
1065     disable_safe "$type"
1066     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1067 }
1068
1069 check_struct(){
1070     log check_struct "$@"
1071     headers=$1
1072     struct=$2
1073     member=$3
1074     shift 3
1075     disable_safe "${struct}_${member}"
1076     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1077         enable_safe "${struct}_${member}"
1078 }
1079
1080 check_builtin(){
1081     log check_builtin "$@"
1082     name=$1
1083     headers=$2
1084     builtin=$3
1085     shift 3
1086     disable "$name"
1087     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1088 }
1089
1090 check_compile_assert(){
1091     log check_compile_assert "$@"
1092     name=$1
1093     headers=$2
1094     condition=$3
1095     shift 3
1096     disable "$name"
1097     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1098 }
1099
1100 require(){
1101     log require "$@"
1102     name="$1"
1103     headers="$2"
1104     func="$3"
1105     shift 3
1106     check_lib "$headers" $func "$@" || die "ERROR: $name not found"
1107 }
1108
1109 require_pkg_config(){
1110     log require_pkg_config "$@"
1111     pkg="$1"
1112     check_pkg_config "$@" || die "ERROR: $pkg not found"
1113     add_cflags    $(get_safe "${pkg}_cflags")
1114     add_extralibs $(get_safe "${pkg}_libs")
1115 }
1116
1117 hostcc_e(){
1118     eval printf '%s\\n' $HOSTCC_E
1119 }
1120
1121 hostcc_o(){
1122     eval printf '%s\\n' $HOSTCC_O
1123 }
1124
1125 check_host_cc(){
1126     log check_host_cc "$@"
1127     cat > $TMPC
1128     log_file $TMPC
1129     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1130 }
1131
1132 check_host_cpp(){
1133     log check_host_cpp "$@"
1134     cat > $TMPC
1135     log_file $TMPC
1136     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1137 }
1138
1139 check_host_cppflags(){
1140     log check_host_cppflags "$@"
1141     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1142 int x;
1143 EOF
1144 }
1145
1146 check_host_cflags(){
1147     log check_host_cflags "$@"
1148     set -- $($host_cflags_filter "$@")
1149     check_host_cc "$@" <<EOF && append host_cflags "$@"
1150 int x;
1151 EOF
1152 }
1153
1154 check_host_cpp_condition(){
1155     log check_host_cpp_condition "$@"
1156     header=$1
1157     condition=$2
1158     shift 2
1159     check_host_cpp "$@" <<EOF
1160 #include <$header>
1161 #if !($condition)
1162 #error "unsatisfied condition: $condition"
1163 #endif
1164 EOF
1165 }
1166
1167 apply(){
1168     file=$1
1169     shift
1170     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1171 }
1172
1173 cp_if_changed(){
1174     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1175     mkdir -p "$(dirname $2)"
1176     $cp_f "$1" "$2"
1177 }
1178
1179 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1180 # system-dependent things.
1181
1182 AVCODEC_COMPONENTS="
1183     bsfs
1184     decoders
1185     encoders
1186     hwaccels
1187     parsers
1188 "
1189
1190 AVDEVICE_COMPONENTS="
1191     indevs
1192     outdevs
1193 "
1194 AVFILTER_COMPONENTS="
1195     filters
1196 "
1197 AVFORMAT_COMPONENTS="
1198     demuxers
1199     muxers
1200     protocols
1201 "
1202
1203 AVRESAMPLE_COMPONENTS=""
1204 AVUTIL_COMPONENTS=""
1205
1206 COMPONENT_LIST="
1207     $AVCODEC_COMPONENTS
1208     $AVDEVICE_COMPONENTS
1209     $AVFILTER_COMPONENTS
1210     $AVFORMAT_COMPONENTS
1211     $AVRESAMPLE_COMPONENTS
1212     $AVUTIL_COMPONENTS
1213 "
1214
1215 EXAMPLE_LIST="
1216     decode_audio_example
1217     decode_video_example
1218     encode_audio_example
1219     encode_video_example
1220     filter_audio_example
1221     metadata_example
1222     output_example
1223     qsvdec_example
1224     transcode_aac_example
1225 "
1226
1227 HWACCEL_LIBRARY_NONFREE_LIST="
1228     cuda
1229     libnpp
1230 "
1231 HWACCEL_LIBRARY_LIST="
1232     $HWACCEL_LIBRARY_NONFREE_LIST
1233     d3d11va
1234     dxva2
1235     libmfx
1236     mmal
1237     nvenc
1238     omx
1239     vaapi
1240     vda
1241     vdpau
1242 "
1243
1244 EXTERNAL_LIBRARY_GPL_LIST="
1245     libcdio
1246     libx264
1247     libx265
1248     libxavs
1249     libxvid
1250 "
1251
1252 EXTERNAL_LIBRARY_NONFREE_LIST="
1253     libfaac
1254     libfdk_aac
1255     openssl
1256 "
1257
1258 EXTERNAL_LIBRARY_VERSION3_LIST="
1259     libopencore_amrnb
1260     libopencore_amrwb
1261     libvo_aacenc
1262     libvo_amrwbenc
1263 "
1264
1265 EXTERNAL_LIBRARY_LIST="
1266     $EXTERNAL_LIBRARY_GPL_LIST
1267     $EXTERNAL_LIBRARY_NONFREE_LIST
1268     $EXTERNAL_LIBRARY_VERSION3_LIST
1269     avisynth
1270     bzlib
1271     frei0r
1272     gnutls
1273     libbs2b
1274     libdc1394
1275     libdcadec
1276     libfontconfig
1277     libfreetype
1278     libgsm
1279     libhdcd
1280     libilbc
1281     libkvazaar
1282     libmp3lame
1283     libopencv
1284     libopenh264
1285     libopenjpeg
1286     libopus
1287     libpulse
1288     librtmp
1289     libschroedinger
1290     libsnappy
1291     libspeex
1292     libtheora
1293     libtwolame
1294     libvorbis
1295     libvpx
1296     libwavpack
1297     libwebp
1298     libxcb
1299     libxcb_shm
1300     libxcb_xfixes
1301     zlib
1302 "
1303
1304 FEATURE_LIST="
1305     gray
1306     hardcoded_tables
1307     omx_rpi
1308     runtime_cpudetect
1309     safe_bitstream_reader
1310     shared
1311     small
1312     sram
1313     static
1314     swscale_alpha
1315 "
1316
1317 LIBRARY_LIST="
1318     avcodec
1319     avdevice
1320     avfilter
1321     avformat
1322     avresample
1323     avutil
1324     swscale
1325 "
1326
1327 LICENSE_LIST="
1328     gpl
1329     nonfree
1330     version3
1331 "
1332
1333 PROGRAM_LIST="
1334     avconv
1335     avplay
1336     avprobe
1337 "
1338
1339 SUBSYSTEM_LIST="
1340     dct
1341     doc
1342     error_resilience
1343     faan
1344     fft
1345     lsp
1346     lzo
1347     mdct
1348     network
1349     rdft
1350 "
1351
1352 CONFIG_LIST="
1353     $COMPONENT_LIST
1354     $EXAMPLE_LIST
1355     $EXTERNAL_LIBRARY_LIST
1356     $HWACCEL_LIBRARY_LIST
1357     $FEATURE_LIST
1358     $LICENSE_LIST
1359     $LIBRARY_LIST
1360     $PROGRAM_LIST
1361     $SUBSYSTEM_LIST
1362     neon_clobber_test
1363     pic
1364     pod2man
1365     texi2html
1366     thumb
1367     valgrind_backtrace
1368     xmm_clobber_test
1369 "
1370
1371 THREADS_LIST="
1372     pthreads
1373     w32threads
1374 "
1375
1376 ATOMICS_LIST="
1377     atomics_gcc
1378     atomics_suncc
1379     atomics_win32
1380 "
1381
1382 ARCH_LIST="
1383     aarch64
1384     alpha
1385     arm
1386     avr32
1387     avr32_ap
1388     avr32_uc
1389     bfin
1390     ia64
1391     m68k
1392     mips
1393     mips64
1394     parisc
1395     ppc
1396     ppc64
1397     s390
1398     sh4
1399     sparc
1400     sparc64
1401     tilegx
1402     tilepro
1403     tomi
1404     x86
1405     x86_32
1406     x86_64
1407 "
1408
1409 ARCH_EXT_LIST_ARM="
1410     armv5te
1411     armv6
1412     armv6t2
1413     armv8
1414     neon
1415     vfp
1416     vfpv3
1417 "
1418
1419 ARCH_EXT_LIST_X86_SIMD="
1420     amd3dnow
1421     amd3dnowext
1422     avx
1423     avx2
1424     fma3
1425     fma4
1426     mmx
1427     mmxext
1428     sse
1429     sse2
1430     sse3
1431     sse4
1432     sse42
1433     ssse3
1434     xop
1435 "
1436
1437 ARCH_EXT_LIST_PPC="
1438     altivec
1439     dcbzl
1440     ldbrx
1441     power8
1442     ppc4xx
1443     vsx
1444 "
1445
1446 ARCH_EXT_LIST_X86="
1447     $ARCH_EXT_LIST_X86_SIMD
1448     cpunop
1449     i686
1450 "
1451
1452 ARCH_EXT_LIST_MIPS="
1453     loongson
1454     mips32r1
1455     mips64r1
1456     mips32r2
1457     mips64r2
1458     mips32r6
1459     mips64r6
1460 "
1461
1462 ARCH_EXT_LIST="
1463     $ARCH_EXT_LIST_ARM
1464     $ARCH_EXT_LIST_MIPS
1465     $ARCH_EXT_LIST_PPC
1466     $ARCH_EXT_LIST_X86
1467     vis
1468 "
1469
1470 ARCH_FEATURES="
1471     aligned_stack
1472     fast_64bit
1473     fast_clz
1474     fast_cmov
1475     local_aligned_8
1476     local_aligned_16
1477     local_aligned_32
1478     simd_align_16
1479     simd_align_32
1480 "
1481
1482 BUILTIN_LIST="
1483     atomic_cas_ptr
1484     machine_rw_barrier
1485     MemoryBarrier
1486     mm_empty
1487     rdtsc
1488     sem_timedwait
1489     sync_val_compare_and_swap
1490 "
1491 HAVE_LIST_CMDLINE="
1492     inline_asm
1493     symver
1494     yasm
1495 "
1496
1497 HAVE_LIST_PUB="
1498     bigendian
1499     fast_unaligned
1500 "
1501
1502 HEADERS_LIST="
1503     AVFoundation_AVFoundation_h
1504     alsa_asoundlib_h
1505     altivec_h
1506     arpa_inet_h
1507     cdio_paranoia_h
1508     cdio_paranoia_paranoia_h
1509     dispatch_dispatch_h
1510     dev_bktr_ioctl_bt848_h
1511     dev_bktr_ioctl_meteor_h
1512     dev_ic_bt8xx_h
1513     dev_video_bktr_ioctl_bt848_h
1514     dev_video_meteor_ioctl_meteor_h
1515     direct_h
1516     dlfcn_h
1517     d3d11_h
1518     dxva_h
1519     gsm_h
1520     io_h
1521     mach_mach_time_h
1522     machine_ioctl_bt848_h
1523     machine_ioctl_meteor_h
1524     malloc_h
1525     poll_h
1526     sndio_h
1527     soundcard_h
1528     stdatomic_h
1529     sys_mman_h
1530     sys_param_h
1531     sys_resource_h
1532     sys_select_h
1533     sys_soundcard_h
1534     sys_time_h
1535     sys_un_h
1536     sys_videoio_h
1537     unistd_h
1538     valgrind_valgrind_h
1539     windows_h
1540     winsock2_h
1541 "
1542
1543 INTRINSICS_LIST="
1544     intrinsics_neon
1545 "
1546
1547 MATH_FUNCS="
1548     atanf
1549     atan2f
1550     cbrtf
1551     cosf
1552     exp2
1553     exp2f
1554     expf
1555     isinf
1556     isnan
1557     ldexpf
1558     llrint
1559     llrintf
1560     log2
1561     log2f
1562     log10f
1563     lrint
1564     lrintf
1565     powf
1566     rint
1567     round
1568     roundf
1569     sinf
1570     trunc
1571     truncf
1572 "
1573
1574 SYSTEM_FUNCS="
1575     aligned_malloc
1576     clock_gettime
1577     closesocket
1578     CommandLineToArgvW
1579     CoTaskMemFree
1580     CryptGenRandom
1581     dlopen
1582     fcntl
1583     flt_lim
1584     fork
1585     getaddrinfo
1586     gethrtime
1587     getopt
1588     GetProcessAffinityMask
1589     GetProcessMemoryInfo
1590     GetProcessTimes
1591     getrusage
1592     GetSystemTimeAsFileTime
1593     gettimeofday
1594     gmtime_r
1595     inet_aton
1596     isatty
1597     jack_port_get_latency_range
1598     LoadLibrary
1599     localtime_r
1600     mach_absolute_time
1601     MapViewOfFile
1602     memalign
1603     mkstemp
1604     mmap
1605     mprotect
1606     nanosleep
1607     posix_memalign
1608     sched_getaffinity
1609     SetConsoleTextAttribute
1610     setmode
1611     setrlimit
1612     Sleep
1613     strerror_r
1614     sysconf
1615     sysctl
1616     usleep
1617     VirtualAlloc
1618 "
1619
1620 TOOLCHAIN_FEATURES="
1621     as_dn_directive
1622     as_fpu_directive
1623     as_func
1624     as_object_arch
1625     asm_mod_q
1626     attribute_may_alias
1627     attribute_packed
1628     ebp_available
1629     ebx_available
1630     gnu_as
1631     ibm_asm
1632     inline_asm_labels
1633     pragma_deprecated
1634     symver_asm_label
1635     symver_gnu_asm
1636     vfp_args
1637     xform_asm
1638     xmm_clobbers
1639 "
1640
1641 TYPES_LIST="
1642     CONDITION_VARIABLE_Ptr
1643     socklen_t
1644     struct_addrinfo
1645     struct_group_source_req
1646     struct_ip_mreq_source
1647     struct_ipv6_mreq
1648     struct_pollfd
1649     struct_rusage_ru_maxrss
1650     struct_sockaddr_in6
1651     struct_sockaddr_sa_len
1652     struct_sockaddr_storage
1653     struct_v4l2_frmivalenum_discrete
1654 "
1655
1656 HAVE_LIST="
1657     $ARCH_EXT_LIST
1658     $(add_suffix _external $ARCH_EXT_LIST)
1659     $(add_suffix _inline   $ARCH_EXT_LIST)
1660     $ARCH_FEATURES
1661     $BUILTIN_LIST
1662     $HAVE_LIST_CMDLINE
1663     $HAVE_LIST_PUB
1664     $HEADERS_LIST
1665     $INTRINSICS_LIST
1666     $MATH_FUNCS
1667     $SYSTEM_FUNCS
1668     $THREADS_LIST
1669     $TOOLCHAIN_FEATURES
1670     $TYPES_LIST
1671     dos_paths
1672     dxva2_lib
1673     libc_msvcrt
1674     libdc1394_1
1675     libdc1394_2
1676     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1677     sdl
1678     section_data_rel_ro
1679     threads
1680     vaapi_drm
1681     vaapi_x11
1682     vdpau_x11
1683     xlib
1684 "
1685
1686 # options emitted with CONFIG_ prefix but not available on the command line
1687 CONFIG_EXTRA="
1688     aandcttables
1689     ac3dsp
1690     audio_frame_queue
1691     audiodsp
1692     blockdsp
1693     bswapdsp
1694     cabac
1695     dirac_parse
1696     dvprofile
1697     faandct
1698     faanidct
1699     fdctdsp
1700     flacdsp
1701     fmtconvert
1702     g722dsp
1703     gmp
1704     golomb
1705     gplv3
1706     h263dsp
1707     h264chroma
1708     h264dsp
1709     h264parse
1710     h264pred
1711     h264qpel
1712     hpeldsp
1713     huffman
1714     huffyuvdsp
1715     huffyuvencdsp
1716     idctdsp
1717     iirfilter
1718     imdct15
1719     intrax8
1720     iso_media
1721     ividsp
1722     jpegtables
1723     libx262
1724     lgplv3
1725     lpc
1726     lzf
1727     me_cmp
1728     mpeg_er
1729     mpegaudio
1730     mpegaudiodsp
1731     mpegvideo
1732     mpegvideoenc
1733     mss34dsp
1734     pixblockdsp
1735     qpeldsp
1736     qsv
1737     qsvdec
1738     qsvenc
1739     rangecoder
1740     riffdec
1741     riffenc
1742     rtpdec
1743     rtpenc_chain
1744     rv34dsp
1745     sinewin
1746     snappy
1747     srtp
1748     startcode
1749     texturedsp
1750     texturedspenc
1751     tpeldsp
1752     vaapi_encode
1753     vc1dsp
1754     videodsp
1755     vp3dsp
1756     vp56dsp
1757     vp8dsp
1758     wma_freqs
1759     wmv2dsp
1760 "
1761
1762 CMDLINE_SELECT="
1763     $ARCH_EXT_LIST
1764     $CONFIG_LIST
1765     $HAVE_LIST_CMDLINE
1766     $THREADS_LIST
1767     asm
1768     cross_compile
1769     debug
1770     extra_warnings
1771     logging
1772     lto
1773     optimizations
1774     rpath
1775 "
1776
1777 PATHS_LIST="
1778     bindir
1779     datadir
1780     docdir
1781     incdir
1782     libdir
1783     mandir
1784     prefix
1785     shlibdir
1786 "
1787
1788 CMDLINE_SET="
1789     $PATHS_LIST
1790     ar
1791     arch
1792     as
1793     build_suffix
1794     cc
1795     objcc
1796     cpu
1797     cross_prefix
1798     custom_allocator
1799     dep_cc
1800     env
1801     extra_version
1802     host_cc
1803     host_cflags
1804     host_ld
1805     host_ldflags
1806     host_libs
1807     host_os
1808     ld
1809     logfile
1810     malloc_prefix
1811     nm
1812     optflags
1813     pkg_config
1814     pkg_config_flags
1815     random_seed
1816     samples
1817     sysinclude
1818     sysroot
1819     target_exec
1820     target_os
1821     target_path
1822     target_samples
1823     toolchain
1824 "
1825
1826 CMDLINE_APPEND="
1827     extra_cflags
1828     extra_objcflags
1829     host_cppflags
1830 "
1831
1832 # code dependency declarations
1833
1834 # architecture extensions
1835
1836 armv5te_deps="arm"
1837 armv6_deps="arm"
1838 armv6t2_deps="arm"
1839 armv8_deps="aarch64"
1840 neon_deps_any="aarch64 arm"
1841 intrinsics_neon_deps="neon"
1842 vfp_deps_any="aarch64 arm"
1843 vfpv3_deps="vfp"
1844
1845 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1846
1847 altivec_deps="ppc"
1848 ppc4xx_deps="ppc"
1849 vsx_deps="altivec"
1850 power8_deps="vsx"
1851
1852 cpunop_deps="i686"
1853 x86_64_select="i686"
1854 x86_64_suggest="fast_cmov"
1855
1856 amd3dnow_deps="mmx"
1857 amd3dnowext_deps="amd3dnow"
1858 i686_deps="x86"
1859 mmx_deps="x86"
1860 mmxext_deps="mmx"
1861 sse_deps="mmxext"
1862 sse2_deps="sse"
1863 sse3_deps="sse2"
1864 ssse3_deps="sse3"
1865 sse4_deps="ssse3"
1866 sse42_deps="sse4"
1867 avx_deps="sse42"
1868 xop_deps="avx"
1869 fma3_deps="avx"
1870 fma4_deps="avx"
1871 avx2_deps="avx"
1872
1873 mmx_external_deps="yasm"
1874 mmx_inline_deps="inline_asm"
1875 mmx_suggest="mmx_external mmx_inline"
1876
1877 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1878     eval dep=\$${ext}_deps
1879     eval ${ext}_external_deps='"${dep}_external"'
1880     eval ${ext}_inline_deps='"${dep}_inline"'
1881     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1882 done
1883
1884 aligned_stack_if_any="aarch64 ppc x86"
1885 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1886 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1887 fast_unaligned_if_any="aarch64 ppc x86"
1888 simd_align_16_if_any="altivec neon sse"
1889 simd_align_32_if_any="avx"
1890
1891 # system capabilities
1892 symver_if_any="symver_asm_label symver_gnu_asm"
1893 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1894
1895 # threading support
1896 atomics_gcc_if="sync_val_compare_and_swap"
1897 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1898 atomics_win32_if="MemoryBarrier"
1899 atomics_native_if_any="$ATOMICS_LIST"
1900 w32threads_deps="atomics_native"
1901 threads_if_any="$THREADS_LIST"
1902
1903 # subsystems
1904 dct_select="rdft"
1905 dirac_parse_select="golomb"
1906 error_resilience_select="me_cmp"
1907 faandct_deps="faan fdctdsp"
1908 faanidct_deps="faan idctdsp"
1909 h264dsp_select="startcode"
1910 intrax8_select="blockdsp idctdsp"
1911 mdct_select="fft"
1912 rdft_select="fft"
1913 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1914 mpeg_er_select="error_resilience"
1915 mpegaudio_select="mpegaudiodsp"
1916 mpegaudiodsp_select="dct"
1917 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1918 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1919 vc1dsp_select="h264chroma qpeldsp startcode"
1920
1921 # decoders / encoders
1922 aac_decoder_select="imdct15 mdct sinewin"
1923 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1924 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1925 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1926 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1927 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1928 adpcm_g722_decoder_select="g722dsp"
1929 adpcm_g722_encoder_select="g722dsp"
1930 aic_decoder_select="golomb idctdsp"
1931 alac_encoder_select="lpc"
1932 als_decoder_select="bswapdsp"
1933 amrnb_decoder_select="lsp"
1934 amrwb_decoder_select="lsp"
1935 amv_decoder_select="sp5x_decoder"
1936 ape_decoder_select="bswapdsp"
1937 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1938 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1939 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1940 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1941 atrac1_decoder_select="mdct sinewin"
1942 atrac3_decoder_select="mdct"
1943 atrac3p_decoder_select="mdct sinewin"
1944 bink_decoder_select="blockdsp hpeldsp"
1945 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1946 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1947 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1948 cllc_decoder_select="bswapdsp"
1949 comfortnoise_encoder_select="lpc"
1950 cook_decoder_select="audiodsp mdct sinewin"
1951 cscd_decoder_select="lzo"
1952 cscd_decoder_suggest="zlib"
1953 dca_decoder_select="fmtconvert mdct"
1954 dds_decoder_select="texturedsp"
1955 dnxhd_decoder_select="blockdsp idctdsp"
1956 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1957 dvvideo_decoder_select="dvprofile idctdsp"
1958 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1959 dxa_decoder_deps="zlib"
1960 dxv_decoder_select="lzf texturedsp"
1961 eac3_decoder_select="ac3_decoder"
1962 eac3_encoder_select="ac3_encoder"
1963 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1964 eatgq_decoder_select="aandcttables idctdsp"
1965 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
1966 exr_decoder_deps="zlib"
1967 ffv1_decoder_select="golomb rangecoder"
1968 ffv1_encoder_select="rangecoder"
1969 ffvhuff_decoder_select="huffyuv_decoder"
1970 ffvhuff_encoder_select="huffyuv_encoder"
1971 fic_decoder_select="golomb"
1972 flac_decoder_select="flacdsp golomb"
1973 flac_encoder_select="bswapdsp flacdsp golomb lpc"
1974 flashsv_decoder_deps="zlib"
1975 flashsv_encoder_deps="zlib"
1976 flashsv2_decoder_deps="zlib"
1977 flv_decoder_select="h263_decoder"
1978 flv_encoder_select="h263_encoder"
1979 fourxm_decoder_select="blockdsp bswapdsp"
1980 fraps_decoder_select="bswapdsp huffman"
1981 g2m_decoder_deps="zlib"
1982 g2m_decoder_select="blockdsp idctdsp jpegtables"
1983 h261_decoder_select="mpeg_er mpegvideo"
1984 h261_encoder_select="aandcttables mpegvideoenc"
1985 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1986 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1987 h263i_decoder_select="h263_decoder"
1988 h263p_encoder_select="h263_encoder"
1989 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
1990 h264_decoder_suggest="error_resilience"
1991 hap_decoder_select="snappy texturedsp"
1992 hap_encoder_deps="libsnappy"
1993 hap_encoder_select="texturedspenc"
1994 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1995 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1996 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1997 iac_decoder_select="imc_decoder"
1998 imc_decoder_select="bswapdsp fft mdct sinewin"
1999 indeo3_decoder_select="hpeldsp"
2000 indeo4_decoder_select="ividsp"
2001 indeo5_decoder_select="ividsp"
2002 interplay_video_decoder_select="hpeldsp"
2003 jpegls_decoder_select="golomb mjpeg_decoder"
2004 jpegls_encoder_select="golomb"
2005 jv_decoder_select="blockdsp"
2006 lagarith_decoder_select="huffyuvdsp"
2007 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2008 loco_decoder_select="golomb"
2009 magicyuv_decoder_select="huffyuvdsp"
2010 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2011 metasound_decoder_select="lsp mdct sinewin"
2012 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2013 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2014 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2015 mjpegb_decoder_select="mjpeg_decoder"
2016 mlp_decoder_select="mlp_parser"
2017 motionpixels_decoder_select="bswapdsp"
2018 mp1_decoder_select="mpegaudio"
2019 mp1float_decoder_select="mpegaudio"
2020 mp2_decoder_select="mpegaudio"
2021 mp2float_decoder_select="mpegaudio"
2022 mp3_decoder_select="mpegaudio"
2023 mp3adu_decoder_select="mpegaudio"
2024 mp3adufloat_decoder_select="mpegaudio"
2025 mp3float_decoder_select="mpegaudio"
2026 mp3on4_decoder_select="mpegaudio"
2027 mp3on4float_decoder_select="mpegaudio"
2028 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2029 mpc8_decoder_select="mpegaudiodsp"
2030 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2031 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2032 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2033 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2034 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2035 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2036 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2037 mpeg4_encoder_select="h263_encoder"
2038 msa1_decoder_select="mss34dsp"
2039 msmpeg4v1_decoder_select="h263_decoder"
2040 msmpeg4v2_decoder_select="h263_decoder"
2041 msmpeg4v2_encoder_select="h263_encoder"
2042 msmpeg4v3_decoder_select="h263_decoder"
2043 msmpeg4v3_encoder_select="h263_encoder"
2044 mss2_decoder_select="error_resilience mpeg_er mpegvideo vc1_decoder"
2045 mts2_decoder_select="mss34dsp"
2046 mxpeg_decoder_select="mjpeg_decoder"
2047 nellymoser_decoder_select="mdct sinewin"
2048 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2049 nuv_decoder_select="idctdsp lzo"
2050 on2avc_decoder_select="mdct"
2051 opus_decoder_deps="avresample"
2052 opus_decoder_select="imdct15"
2053 png_decoder_deps="zlib"
2054 png_encoder_deps="zlib"
2055 png_encoder_select="huffyuvencdsp"
2056 prores_decoder_select="idctdsp"
2057 prores_encoder_select="fdctdsp"
2058 qcelp_decoder_select="lsp"
2059 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2060 ra_144_encoder_select="audio_frame_queue lpc"
2061 ralf_decoder_select="golomb"
2062 rscc_decoder_deps="zlib"
2063 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2064 rv10_encoder_select="h263_encoder"
2065 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2066 rv20_encoder_select="h263_encoder"
2067 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2068 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2069 screenpresso_decoder_deps="zlib"
2070 shorten_decoder_select="golomb"
2071 sipr_decoder_select="lsp"
2072 sp5x_decoder_select="mjpeg_decoder"
2073 svq1_decoder_select="hpeldsp"
2074 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2075 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2076 svq3_decoder_suggest="zlib"
2077 tak_decoder_select="audiodsp"
2078 tdsc_decoder_deps="zlib"
2079 tdsc_decoder_select="mjpeg_decoder"
2080 theora_decoder_select="vp3_decoder"
2081 thp_decoder_select="mjpeg_decoder"
2082 tiff_decoder_suggest="zlib"
2083 tiff_encoder_suggest="zlib"
2084 truehd_decoder_select="mlp_decoder"
2085 truemotion2_decoder_select="bswapdsp"
2086 truespeech_decoder_select="bswapdsp"
2087 tscc_decoder_deps="zlib"
2088 txd_decoder_select="texturedsp"
2089 twinvq_decoder_select="mdct lsp sinewin"
2090 utvideo_decoder_select="bswapdsp"
2091 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2092 vble_decoder_select="huffyuvdsp"
2093 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2094 vc1image_decoder_select="vc1_decoder"
2095 vorbis_decoder_select="mdct"
2096 vorbis_encoder_select="mdct"
2097 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2098 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2099 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2100 vp6a_decoder_select="vp6_decoder"
2101 vp6f_decoder_select="vp6_decoder"
2102 vp7_decoder_select="h264pred videodsp vp8dsp"
2103 vp8_decoder_select="h264pred videodsp vp8dsp"
2104 vp9_decoder_select="videodsp"
2105 webp_decoder_select="vp8_decoder"
2106 wmapro_decoder_select="mdct sinewin wma_freqs"
2107 wmav1_decoder_select="mdct sinewin wma_freqs"
2108 wmav1_encoder_select="mdct sinewin wma_freqs"
2109 wmav2_decoder_select="mdct sinewin wma_freqs"
2110 wmav2_encoder_select="mdct sinewin wma_freqs"
2111 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2112 wmv1_decoder_select="h263_decoder"
2113 wmv1_encoder_select="h263_encoder"
2114 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2115 wmv2_encoder_select="h263_encoder wmv2dsp"
2116 wmv3_decoder_select="vc1_decoder"
2117 wmv3image_decoder_select="wmv3_decoder"
2118 zerocodec_decoder_deps="zlib"
2119 zlib_decoder_deps="zlib"
2120 zlib_encoder_deps="zlib"
2121 zmbv_decoder_deps="zlib"
2122 zmbv_encoder_deps="zlib"
2123
2124 # hardware accelerators
2125 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2126 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2127 vaapi_deps="va_va_h"
2128 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2129 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2130 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2131
2132 h263_vaapi_hwaccel_deps="vaapi"
2133 h263_vaapi_hwaccel_select="h263_decoder"
2134 h264_d3d11va_hwaccel_deps="d3d11va"
2135 h264_d3d11va_hwaccel_select="h264_decoder"
2136 h264_dxva2_hwaccel_deps="dxva2"
2137 h264_dxva2_hwaccel_select="h264_decoder"
2138 h264_mmal_hwaccel_deps="mmal"
2139 h264_qsv_hwaccel_deps="libmfx"
2140 h264_vaapi_hwaccel_deps="vaapi"
2141 h264_vaapi_hwaccel_select="h264_decoder"
2142 h264_vda_hwaccel_deps="vda"
2143 h264_vda_hwaccel_select="h264_decoder"
2144 h264_vda_old_hwaccel_deps="vda"
2145 h264_vda_old_hwaccel_select="h264_decoder"
2146 h264_vdpau_hwaccel_deps="vdpau"
2147 h264_vdpau_hwaccel_select="h264_decoder"
2148 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2149 hevc_d3d11va_hwaccel_select="hevc_decoder"
2150 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2151 hevc_dxva2_hwaccel_select="hevc_decoder"
2152 hevc_qsv_hwaccel_deps="libmfx"
2153 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2154 hevc_vdpau_hwaccel_select="hevc_decoder"
2155 mpeg1_vdpau_hwaccel_deps="vdpau"
2156 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2157 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2158 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2159 mpeg2_dxva2_hwaccel_deps="dxva2"
2160 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2161 mpeg2_mmal_hwaccel_deps="mmal"
2162 mpeg2_qsv_hwaccel_deps="libmfx"
2163 mpeg2_vaapi_hwaccel_deps="vaapi"
2164 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2165 mpeg2_vdpau_hwaccel_deps="vdpau"
2166 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2167 mpeg4_vaapi_hwaccel_deps="vaapi"
2168 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2169 mpeg4_vdpau_hwaccel_deps="vdpau"
2170 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2171 vc1_d3d11va_hwaccel_deps="d3d11va"
2172 vc1_d3d11va_hwaccel_select="vc1_decoder"
2173 vc1_dxva2_hwaccel_deps="dxva2"
2174 vc1_dxva2_hwaccel_select="vc1_decoder"
2175 vc1_mmal_hwaccel_deps="mmal"
2176 vc1_qsv_hwaccel_deps="libmfx"
2177 vc1_vaapi_hwaccel_deps="vaapi"
2178 vc1_vaapi_hwaccel_select="vc1_decoder"
2179 vc1_vdpau_hwaccel_deps="vdpau"
2180 vc1_vdpau_hwaccel_select="vc1_decoder"
2181 vp8_qsv_hwaccel_deps="libmfx"
2182 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2183 vp8_vaapi_hwaccel_select="vp8_decoder"
2184 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2185 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2186 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2187 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2188
2189 # hardware-accelerated codecs
2190 nvenc_deps_any="dlopen LoadLibrary"
2191 nvenc_extralibs='$ldl'
2192 omx_deps="dlopen pthreads"
2193 omx_extralibs='$ldl'
2194 qsvdec_select="qsv"
2195 qsvenc_select="qsv"
2196 vaapi_encode_deps="vaapi"
2197
2198 hwupload_cuda_filter_deps="cuda"
2199 scale_npp_filter_deps="cuda libnpp"
2200
2201 h264_mmal_decoder_deps="mmal"
2202 h264_nvenc_encoder_deps="nvenc"
2203 h264_omx_encoder_deps="omx"
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 hevc_nvenc_encoder_deps="nvenc"
2211 hevc_qsv_decoder_deps="libmfx"
2212 hevc_qsv_encoder_deps="libmfx"
2213 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2214 hevc_qsv_encoder_select="qsvenc"
2215 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2216 hevc_vaapi_encoder_select="vaapi_encode golomb"
2217 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2218 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2219 mpeg2_mmal_decoder_deps="mmal"
2220 mpeg2_qsv_decoder_deps="libmfx"
2221 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2222 mpeg2_qsv_encoder_deps="libmfx"
2223 mpeg2_qsv_encoder_select="qsvenc"
2224 mpeg4_omx_encoder_deps="omx"
2225 vc1_mmal_decoder_deps="mmal"
2226 vc1_qsv_decoder_deps="libmfx"
2227 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2228 vp8_qsv_decoder_deps="libmfx"
2229 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2230
2231 nvenc_h264_encoder_deps="nvenc"
2232 nvenc_hevc_encoder_deps="nvenc"
2233
2234 # parsers
2235 h264_parser_select="golomb h264dsp h264parse"
2236 hevc_parser_select="golomb"
2237 mpegvideo_parser_select="mpegvideo"
2238 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2239 vc1_parser_select="vc1dsp"
2240
2241 # bitstream_filters
2242 mjpeg2jpeg_bsf_select="jpegtables"
2243
2244 # external libraries
2245 libdcadec_decoder_deps="libdcadec"
2246 libfaac_encoder_deps="libfaac"
2247 libfaac_encoder_select="audio_frame_queue"
2248 libfdk_aac_decoder_deps="libfdk_aac"
2249 libfdk_aac_encoder_deps="libfdk_aac"
2250 libfdk_aac_encoder_select="audio_frame_queue"
2251 libgsm_decoder_deps="libgsm"
2252 libgsm_encoder_deps="libgsm"
2253 libgsm_ms_decoder_deps="libgsm"
2254 libgsm_ms_encoder_deps="libgsm"
2255 libilbc_decoder_deps="libilbc"
2256 libilbc_encoder_deps="libilbc"
2257 libkvazaar_encoder_deps="libkvazaar"
2258 libmp3lame_encoder_deps="libmp3lame"
2259 libmp3lame_encoder_select="audio_frame_queue"
2260 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2261 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2262 libopencore_amrnb_encoder_select="audio_frame_queue"
2263 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2264 libopenh264_decoder_deps="libopenh264"
2265 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2266 libopenh264_encoder_deps="libopenh264"
2267 libopenjpeg_decoder_deps="libopenjpeg"
2268 libopenjpeg_encoder_deps="libopenjpeg"
2269 libopus_decoder_deps="libopus"
2270 libopus_encoder_deps="libopus"
2271 libopus_encoder_select="audio_frame_queue"
2272 libschroedinger_decoder_deps="libschroedinger"
2273 libschroedinger_encoder_deps="libschroedinger"
2274 libspeex_decoder_deps="libspeex"
2275 libspeex_encoder_deps="libspeex"
2276 libspeex_encoder_select="audio_frame_queue"
2277 libtheora_encoder_deps="libtheora"
2278 libtwolame_encoder_deps="libtwolame"
2279 libvo_aacenc_encoder_deps="libvo_aacenc"
2280 libvo_aacenc_encoder_select="audio_frame_queue"
2281 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2282 libvorbis_encoder_deps="libvorbis"
2283 libvorbis_encoder_select="audio_frame_queue"
2284 libvpx_vp8_decoder_deps="libvpx"
2285 libvpx_vp8_encoder_deps="libvpx"
2286 libvpx_vp9_decoder_deps="libvpx"
2287 libvpx_vp9_encoder_deps="libvpx"
2288 libwavpack_encoder_deps="libwavpack"
2289 libwebp_encoder_deps="libwebp"
2290 libx262_encoder_deps="libx262"
2291 libx264_encoder_deps="libx264"
2292 libx265_encoder_deps="libx265"
2293 libxavs_encoder_deps="libxavs"
2294 libxvid_encoder_deps="libxvid mkstemp"
2295
2296 # demuxers / muxers
2297 ac3_demuxer_select="ac3_parser"
2298 asf_demuxer_select="riffdec"
2299 asf_muxer_select="riffenc"
2300 asf_stream_muxer_select="asf_muxer"
2301 avi_demuxer_select="iso_media riffdec"
2302 avi_muxer_select="riffenc"
2303 avisynth_demuxer_deps="avisynth"
2304 avisynth_demuxer_select="riffdec"
2305 caf_demuxer_select="iso_media riffdec"
2306 dash_muxer_select="mp4_muxer"
2307 dirac_demuxer_select="dirac_parser"
2308 dv_demuxer_select="dvprofile"
2309 dv_muxer_select="dvprofile"
2310 dxa_demuxer_select="riffdec"
2311 eac3_demuxer_select="ac3_parser"
2312 f4v_muxer_select="mov_muxer"
2313 flac_demuxer_select="flac_parser"
2314 hds_muxer_select="flv_muxer"
2315 hls_muxer_select="mpegts_muxer"
2316 ipod_muxer_select="mov_muxer"
2317 ismv_muxer_select="mov_muxer"
2318 matroska_audio_muxer_select="matroska_muxer"
2319 matroska_demuxer_select="iso_media riffdec"
2320 matroska_demuxer_suggest="bzlib lzo zlib"
2321 matroska_muxer_select="iso_media riffenc"
2322 mmf_muxer_select="riffenc"
2323 mov_demuxer_select="iso_media riffdec"
2324 mov_demuxer_suggest="zlib"
2325 mov_muxer_select="iso_media riffenc rtpenc_chain"
2326 mp3_demuxer_select="mpegaudio_parser"
2327 mp4_muxer_select="mov_muxer"
2328 mpegts_demuxer_select="iso_media"
2329 mpegts_muxer_select="adts_muxer latm_muxer"
2330 mpegtsraw_demuxer_select="mpegts_demuxer"
2331 mxf_d10_muxer_select="mxf_muxer"
2332 nut_muxer_select="riffenc"
2333 nuv_demuxer_select="riffdec"
2334 oga_muxer_select="ogg_muxer"
2335 ogg_demuxer_select="dirac_parse"
2336 opus_muxer_select="ogg_muxer"
2337 psp_muxer_select="mov_muxer"
2338 rtp_demuxer_select="sdp_demuxer"
2339 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2340 rtsp_demuxer_select="http_protocol rtpdec"
2341 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2342 sap_demuxer_select="sdp_demuxer"
2343 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2344 sdp_demuxer_select="rtpdec"
2345 smoothstreaming_muxer_select="ismv_muxer"
2346 spdif_muxer_select="aac_parser"
2347 spx_muxer_select="ogg_muxer"
2348 swf_demuxer_suggest="zlib"
2349 tak_demuxer_select="tak_parser"
2350 tg2_muxer_select="mov_muxer"
2351 tgp_muxer_select="mov_muxer"
2352 w64_demuxer_select="wav_demuxer"
2353 wav_demuxer_select="riffdec"
2354 wav_muxer_select="riffenc"
2355 webm_muxer_select="iso_media riffenc"
2356 webm_muxer_suggest="libopus_encoder libvorbis_encoder libvpx_vp8_encoder libvpx_vp9_encoder"
2357 wtv_demuxer_select="mpegts_demuxer riffdec"
2358 xmv_demuxer_select="riffdec"
2359 xwma_demuxer_select="riffdec"
2360
2361 # indevs / outdevs
2362 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2363 alsa_outdev_deps="alsa_asoundlib_h"
2364 avfoundation_indev_deps="AVFoundation_AVFoundation_h"
2365 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2366 dv1394_indev_deps="dv1394"
2367 dv1394_indev_select="dv_demuxer"
2368 fbdev_indev_deps="linux_fb_h"
2369 jack_indev_deps="jack_jack_h"
2370 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2371 libcdio_indev_deps="libcdio"
2372 libdc1394_indev_deps="libdc1394"
2373 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2374 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2375 pulse_indev_deps="libpulse"
2376 sndio_indev_deps="sndio_h"
2377 sndio_outdev_deps="sndio_h"
2378 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2379 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2380 vfwcap_indev_extralibs="-lavicap32"
2381 xcbgrab_indev_deps="libxcb"
2382
2383 # protocols
2384 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2385 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2386 ffrtmpcrypt_protocol_select="tcp_protocol"
2387 ffrtmphttp_protocol_deps="!librtmp_protocol"
2388 ffrtmphttp_protocol_select="http_protocol"
2389 gopher_protocol_select="network"
2390 http_protocol_select="tcp_protocol"
2391 httpproxy_protocol_select="tcp_protocol"
2392 https_protocol_select="tls_protocol"
2393 icecast_protocol_select="http_protocol"
2394 librtmp_protocol_deps="librtmp"
2395 librtmpe_protocol_deps="librtmp"
2396 librtmps_protocol_deps="librtmp"
2397 librtmpt_protocol_deps="librtmp"
2398 librtmpte_protocol_deps="librtmp"
2399 mmsh_protocol_select="http_protocol"
2400 mmst_protocol_select="network"
2401 rtmp_protocol_deps="!librtmp_protocol"
2402 rtmp_protocol_select="tcp_protocol"
2403 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2404 rtmps_protocol_deps="!librtmp_protocol"
2405 rtmps_protocol_select="tls_protocol"
2406 rtmpt_protocol_select="ffrtmphttp_protocol"
2407 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2408 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2409 rtp_protocol_select="udp_protocol"
2410 sctp_protocol_deps="struct_sctp_event_subscribe"
2411 sctp_protocol_select="network"
2412 srtp_protocol_select="rtp_protocol srtp"
2413 tcp_protocol_select="network"
2414 tls_gnutls_protocol_deps="gnutls"
2415 tls_gnutls_protocol_select="tcp_protocol"
2416 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2417 tls_openssl_protocol_select="tcp_protocol"
2418 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2419 udp_protocol_select="network"
2420 unix_protocol_deps="sys_un_h"
2421 unix_protocol_select="network"
2422
2423 # filters
2424 asyncts_filter_deps="avresample"
2425 blackframe_filter_deps="gpl"
2426 boxblur_filter_deps="gpl"
2427 bs2b_filter_deps="libbs2b"
2428 cropdetect_filter_deps="gpl"
2429 deinterlace_qsv_filter_deps="libmfx"
2430 delogo_filter_deps="gpl"
2431 drawtext_filter_deps="libfreetype"
2432 frei0r_filter_deps="frei0r dlopen"
2433 frei0r_filter_extralibs='$ldl'
2434 frei0r_src_filter_deps="frei0r dlopen"
2435 frei0r_src_filter_extralibs='$ldl'
2436 hdcd_filter_deps="libhdcd"
2437 hqdn3d_filter_deps="gpl"
2438 interlace_filter_deps="gpl"
2439 movie_filter_deps="avcodec avformat"
2440 ocv_filter_deps="libopencv"
2441 resample_filter_deps="avresample"
2442 scale_filter_deps="swscale"
2443 scale_qsv_filter_deps="libmfx"
2444 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2445
2446 # examples
2447 decode_audio_example_deps="avcodec avutil"
2448 decode_video_example_deps="avcodec avutil"
2449 encode_audio_example_deps="avcodec avutil"
2450 encode_video_example_deps="avcodec avutil"
2451 filter_audio_example_deps="avfilter avutil"
2452 metadata_example_deps="avformat avutil"
2453 output_example_deps="avcodec avformat avresample avutil swscale"
2454 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2455 transcode_aac_example_deps="avcodec avformat avresample"
2456
2457 # libraries, in linking order
2458 avcodec_deps="avutil"
2459 avdevice_deps="avformat avcodec avutil"
2460 avfilter_deps="avutil"
2461 avformat_deps="avcodec avutil"
2462 avresample_deps="avutil"
2463 swscale_deps="avutil"
2464
2465 # programs
2466 avconv_deps="avcodec avfilter avformat avresample swscale"
2467 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2468                fps_filter null_filter resample_filter scale_filter
2469                trim_filter"
2470 avplay_deps="avcodec avfilter avformat avresample sdl"
2471 avplay_libs='$sdl_libs'
2472 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2473 avprobe_deps="avcodec avformat"
2474
2475 # documentation
2476 pod2man_deps="doc"
2477 texi2html_deps="doc"
2478
2479 # default parameters
2480
2481 logfile="config.log"
2482
2483 # installation paths
2484 prefix_default="/usr/local"
2485 bindir_default='${prefix}/bin'
2486 datadir_default='${prefix}/share/avconv'
2487 docdir_default='${prefix}/share/doc/libav'
2488 incdir_default='${prefix}/include'
2489 libdir_default='${prefix}/lib'
2490 mandir_default='${prefix}/share/man'
2491 shlibdir_default="$libdir_default"
2492
2493 # toolchain
2494 ar_default="ar"
2495 cc_default="gcc"
2496 host_cc_default="gcc"
2497 cp_f="cp -f"
2498 ln_s="ln -s -f"
2499 nm_default="nm -g"
2500 objformat="elf"
2501 pkg_config_default=pkg-config
2502 ranlib="ranlib"
2503 strip="strip"
2504 version_script='--version-script'
2505 yasmexe="yasm"
2506
2507 # machine
2508 arch_default=$(uname -m)
2509 cpu="generic"
2510 intrinsics="none"
2511
2512 # OS
2513 target_os_default=$(tolower $(uname -s))
2514 host_os=$target_os_default
2515
2516 # configurable options
2517 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2518
2519 enable asm
2520 enable debug
2521 enable doc
2522 enable faan faandct faanidct
2523 enable optimizations
2524 enable safe_bitstream_reader
2525 enable static
2526 enable swscale_alpha
2527 enable valgrind_backtrace
2528
2529 # By default, enable only those hwaccels that have no external dependencies.
2530 enable d3d11va dxva2 vda vdpau
2531
2532 # build settings
2533 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2534 LIBPREF="lib"
2535 LIBSUF=".a"
2536 FULLNAME='$(NAME)$(BUILDSUF)'
2537 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2538 SLIBPREF="lib"
2539 SLIBSUF=".so"
2540 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2541 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2542 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2543 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2544 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2545 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2546 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2547
2548 asflags_filter=echo
2549 cflags_filter=echo
2550 ldflags_filter=echo
2551
2552 AS_C='-c'
2553 AS_O='-o $@'
2554 CC_C='-c'
2555 CC_E='-E -o $@'
2556 CC_O='-o $@'
2557 OBJCC_C='-c'
2558 OBJCC_E='-E -o $@'
2559 OBJCC_O='-o $@'
2560 LD_O='-o $@'
2561 LD_LIB='-l%'
2562 LD_PATH='-L'
2563 HOSTCC_C='-c'
2564 HOSTCC_E='-E -o $@'
2565 HOSTCC_O='-o $@'
2566 HOSTLD_O='-o $@'
2567
2568 host_libs='-lm'
2569 host_cflags_filter=echo
2570 host_ldflags_filter=echo
2571
2572 target_path='$(CURDIR)'
2573
2574 # since the object filename is not given with the -MM flag, the compiler
2575 # is only able to print the basename, and we must add the path ourselves
2576 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2577 DEPFLAGS='-MM'
2578
2579 # find source path
2580 if test -f configure; then
2581     source_path=.
2582 else
2583     source_path=$(cd $(dirname "$0"); pwd)
2584     echo "$source_path" | grep -q '[[:blank:]]' &&
2585         die "Out of tree builds are impossible with whitespace in source path."
2586     test -e "$source_path/config.h" &&
2587         die "Out of tree builds are impossible with config.h in source dir."
2588 fi
2589
2590 for v in "$@"; do
2591     r=${v#*=}
2592     l=${v%"$r"}
2593     r=$(sh_quote "$r")
2594     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2595 done
2596
2597 find_things(){
2598     thing=$1
2599     pattern=$2
2600     file=$source_path/$3
2601     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2602 }
2603
2604 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2605 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2606 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2607 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2608 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2609 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2610 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2611 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2612 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2613
2614 find_things_extern(){
2615     thing=$1
2616     pattern=$2
2617     file=$source_path/$3
2618     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2619 }
2620
2621 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2622 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2623
2624 ALL_COMPONENTS="
2625     $BSF_LIST
2626     $DECODER_LIST
2627     $DEMUXER_LIST
2628     $ENCODER_LIST
2629     $FILTER_LIST
2630     $HWACCEL_LIST
2631     $INDEV_LIST
2632     $MUXER_LIST
2633     $OUTDEV_LIST
2634     $PARSER_LIST
2635     $PROTOCOL_LIST
2636 "
2637
2638 for n in $COMPONENT_LIST; do
2639     v=$(toupper ${n%s})_LIST
2640     eval enable \$$v
2641     eval ${n}_if_any="\$$v"
2642 done
2643
2644 enable $ARCH_EXT_LIST
2645
2646 die_unknown(){
2647     echo "Unknown option \"$1\"."
2648     echo "See $0 --help for available options."
2649     exit 1
2650 }
2651
2652 print_3_columns() {
2653     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2654 }
2655
2656 show_list() {
2657     suffix=_$1
2658     shift
2659     echo $* | sed s/$suffix//g | print_3_columns
2660     exit 0
2661 }
2662
2663 rand_list(){
2664     IFS=', '
2665     set -- $*
2666     unset IFS
2667     for thing; do
2668         comp=${thing%:*}
2669         prob=${thing#$comp}
2670         prob=${prob#:}
2671         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2672         echo "prob ${prob:-0.5}"
2673         printf '%s\n' $comp
2674     done
2675 }
2676
2677 do_random(){
2678     action=$1
2679     shift
2680     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2681     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2682 }
2683
2684 for opt do
2685     optval="${opt#*=}"
2686     case "$opt" in
2687         --extra-ldflags=*)
2688             add_ldflags $optval
2689         ;;
2690         --extra-ldexeflags=*)
2691             add_ldexeflags $optval
2692         ;;
2693         --extra-libs=*)
2694             add_extralibs $optval
2695         ;;
2696         --disable-devices)
2697             disable $INDEV_LIST $OUTDEV_LIST
2698         ;;
2699         --enable-debug=*)
2700             debuglevel="$optval"
2701         ;;
2702         --disable-programs)
2703             disable $PROGRAM_LIST
2704         ;;
2705         --disable-everything)
2706             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2707         ;;
2708         --disable-all)
2709             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2710             disable $LIBRARY_LIST $PROGRAM_LIST doc
2711         ;;
2712         --enable-random|--disable-random)
2713             action=${opt%%-random}
2714             do_random ${action#--} $COMPONENT_LIST
2715         ;;
2716         --enable-random=*|--disable-random=*)
2717             action=${opt%%-random=*}
2718             do_random ${action#--} $optval
2719         ;;
2720         --enable-*=*|--disable-*=*)
2721             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2722             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2723             eval list=\$$(toupper $thing)_LIST
2724             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2725             $action $(filter "$name" $list)
2726         ;;
2727         --enable-avserver|--disable-avserver*)
2728             warn "avserver has been removed, the ${opt} option is only"\
2729                  "provided for compatibility and will be removed in the future"
2730         ;;
2731         --enable-?*|--disable-?*)
2732             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2733             if is_in $option $COMPONENT_LIST; then
2734                 test $action = disable && action=unset
2735                 eval $action \$$(toupper ${option%s})_LIST
2736             elif is_in $option $CMDLINE_SELECT; then
2737                 $action $option
2738             else
2739                 die_unknown $opt
2740             fi
2741         ;;
2742         --list-*)
2743             NAME="${opt#--list-}"
2744             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2745             NAME=${NAME%s}
2746             eval show_list $NAME \$$(toupper $NAME)_LIST
2747         ;;
2748         --help|-h) show_help
2749         ;;
2750         --quiet|-q) quiet=yes
2751         ;;
2752         *)
2753             optname="${opt%%=*}"
2754             optname="${optname#--}"
2755             optname=$(echo "$optname" | sed 's/-/_/g')
2756             if is_in $optname $CMDLINE_SET; then
2757                 eval $optname='$optval'
2758             elif is_in $optname $CMDLINE_APPEND; then
2759                 append $optname "$optval"
2760             else
2761                 die_unknown $opt
2762             fi
2763         ;;
2764     esac
2765 done
2766
2767 for e in $env; do
2768     eval "export $e"
2769 done
2770
2771 disabled logging && logfile=/dev/null
2772
2773 # Die early if licensing-related configure options are incompatible.
2774 die_license_disabled() {
2775     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2776 }
2777
2778 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2779 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2780 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2781
2782 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2783
2784 # Disable all the library-specific components if the library itself
2785 # is disabled, see AVCODEC_LIST and following _LIST variables.
2786
2787 disable_components(){
2788     disabled ${1} && disable $(
2789         eval components="\$$(toupper ${1})_COMPONENTS"
2790         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2791     )
2792 }
2793
2794 map 'disable_components $v' $LIBRARY_LIST
2795
2796 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2797 set >> $logfile
2798
2799 case "$toolchain" in
2800     *-asan)
2801         cc_default="${toolchain%-asan}"
2802         add_cflags  -fsanitize=address
2803         add_ldflags -fsanitize=address
2804     ;;
2805     *-msan)
2806         cc_default="${toolchain%-msan}"
2807         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2808         add_ldflags -fsanitize=memory
2809     ;;
2810     *-tsan)
2811         cc_default="${toolchain%-tsan}"
2812         add_cflags  -fsanitize=thread -pie
2813         add_ldflags -fsanitize=thread -pie
2814         case "$toolchain" in
2815             gcc-tsan)
2816                 add_cflags  -fPIC
2817                 add_ldflags -fPIC
2818                 ;;
2819         esac
2820     ;;
2821     *-usan)
2822         cc_default="${toolchain%-usan}"
2823         add_cflags  -fsanitize=undefined
2824         add_ldflags -fsanitize=undefined
2825         case "$toolchain" in
2826             clang-usan)
2827                 add_cflags -O1
2828                 ;;
2829         esac
2830     ;;
2831     valgrind-*)
2832         target_exec_default="valgrind"
2833         case "$toolchain" in
2834             valgrind-massif)
2835                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2836                 ;;
2837             valgrind-memcheck)
2838                 target_exec_args="--track-origins=yes --leak-check=full"
2839                 ;;
2840         esac
2841     ;;
2842     msvc)
2843         # Check whether the current MSVC version needs the C99 converter.
2844         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2845         # support enough of C99 to build libav. Default to the new
2846         # behaviour if the regexp was unable to match anything, since this
2847         # successfully parses the version number of existing supported
2848         # versions that require the converter (MSVC 2010 and 2012).
2849         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2850         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2851             cc_default="cl"
2852         else
2853             cc_default="c99wrap cl"
2854         fi
2855         ld_default="$source_path/compat/windows/mslink"
2856         nm_default="dumpbin -symbols"
2857         ar_default="lib"
2858         case "$arch" in
2859         arm*)
2860             as_default="armasm"
2861             ;;
2862         esac
2863         target_os_default="win32"
2864         # Use a relative path for TMPDIR. This makes sure all the
2865         # ffconf temp files are written with a relative path, avoiding
2866         # issues with msys/win32 path conversion for MSVC parameters
2867         # such as -Fo<file> or -out:<file>.
2868         TMPDIR=.
2869     ;;
2870     icl)
2871         cc_default="icl"
2872         ld_default="xilink"
2873         nm_default="dumpbin -symbols"
2874         ar_default="xilib"
2875         target_os_default="win32"
2876         TMPDIR=.
2877     ;;
2878     gcov)
2879         add_cflags  -fprofile-arcs -ftest-coverage
2880         add_ldflags -fprofile-arcs -ftest-coverage
2881     ;;
2882     llvm-cov)
2883         add_cflags -fprofile-arcs -ftest-coverage
2884         add_ldflags --coverage
2885     ;;
2886     hardened)
2887         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2888         add_cflags   -fno-strict-overflow -fstack-protector-all
2889         add_ldflags  -Wl,-z,relro -Wl,-z,now
2890     ;;
2891     ?*)
2892         die "Unknown toolchain $toolchain"
2893     ;;
2894 esac
2895
2896 test -n "$cross_prefix" && enable cross_compile
2897
2898 if enabled cross_compile; then
2899     test -n "$arch" && test -n "$target_os" ||
2900         die "Must specify target arch and OS when cross-compiling"
2901 fi
2902
2903 ar_default="${cross_prefix}${ar_default}"
2904 cc_default="${cross_prefix}${cc_default}"
2905 occ_default="${cross_prefix}${occ_default}"
2906 nm_default="${cross_prefix}${nm_default}"
2907 pkg_config_default="${cross_prefix}${pkg_config_default}"
2908 ranlib="${cross_prefix}${ranlib}"
2909 strip="${cross_prefix}${strip}"
2910
2911 sysinclude_default="${sysroot}/usr/include"
2912
2913 set_default arch cc pkg_config sysinclude target_exec target_os
2914 enabled cross_compile || host_cc_default=$cc
2915 set_default host_cc
2916
2917 if ! $pkg_config --version >/dev/null 2>&1; then
2918     warn "$pkg_config not found, library detection may fail."
2919     pkg_config=false
2920 fi
2921
2922 exesuf() {
2923     case $1 in
2924         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2925     esac
2926 }
2927
2928 EXESUF=$(exesuf $target_os)
2929 HOSTEXESUF=$(exesuf $host_os)
2930
2931 # set temporary file name
2932 : ${TMPDIR:=$TEMPDIR}
2933 : ${TMPDIR:=$TMP}
2934 : ${TMPDIR:=/tmp}
2935
2936 if ! check_cmd mktemp -u XXXXXX; then
2937     # simple replacement for missing mktemp
2938     # NOT SAFE FOR GENERAL USE
2939     mktemp(){
2940         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2941     }
2942 fi
2943
2944 tmpfile(){
2945     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2946         (set -C; exec > $tmp) 2>/dev/null ||
2947         die "Unable to create temporary file in $TMPDIR."
2948     append TMPFILES $tmp
2949     eval $1=$tmp
2950 }
2951
2952 trap 'rm -f -- $TMPFILES' EXIT
2953
2954 tmpfile TMPASM .asm
2955 tmpfile TMPC   .c
2956 tmpfile TMPE   $EXESUF
2957 tmpfile TMPH   .h
2958 tmpfile TMPO   .o
2959 tmpfile TMPS   .S
2960 tmpfile TMPSH  .sh
2961 tmpfile TMPV   .ver
2962
2963 unset -f mktemp
2964
2965 chmod +x $TMPE
2966
2967 # make sure we can execute files in $TMPDIR
2968 cat > $TMPSH 2>> $logfile <<EOF
2969 #! /bin/sh
2970 EOF
2971 chmod +x $TMPSH >> $logfile 2>&1
2972 if ! $TMPSH >> $logfile 2>&1; then
2973     cat <<EOF
2974 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2975 variable to another directory and make sure that it is not mounted noexec.
2976 EOF
2977     die "Sanity test failed."
2978 fi
2979
2980 armasm_flags(){
2981     for flag; do
2982         case $flag in
2983             # Filter out MSVC cl.exe options from cflags that shouldn't
2984             # be passed to gas-preprocessor
2985             -M[TD]*)                                            ;;
2986             *)                  echo $flag                      ;;
2987         esac
2988    done
2989 }
2990
2991 ccc_flags(){
2992     for flag; do
2993         case $flag in
2994             -std=c99)           echo -c99                       ;;
2995             -mcpu=*)            echo -arch ${flag#*=}           ;;
2996             -mieee)             echo -ieee                      ;;
2997             -O*|-fast)          echo $flag                      ;;
2998             -fno-math-errno)    echo -assume nomath_errno       ;;
2999             -g)                 echo -g3                        ;;
3000             -Wall)              echo -msg_enable level2         ;;
3001             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3002             -Wl,*)              echo $flag                      ;;
3003             -f*|-W*)                                            ;;
3004             *)                  echo $flag                      ;;
3005         esac
3006    done
3007 }
3008
3009 cparser_flags(){
3010     for flag; do
3011         case $flag in
3012             -Wno-switch)             echo -Wno-switch-enum ;;
3013             -Wno-format-zero-length) ;;
3014             -Wdisabled-optimization) ;;
3015             -Wno-pointer-sign)       echo -Wno-other ;;
3016             *)                       echo $flag ;;
3017         esac
3018     done
3019 }
3020
3021 msvc_common_flags(){
3022     for flag; do
3023         case $flag in
3024             # In addition to specifying certain flags under the compiler
3025             # specific filters, they must be specified here as well or else the
3026             # generic catch all at the bottom will print the original flag.
3027             -Wall)                ;;
3028             -std=c99)             ;;
3029             # Common flags
3030             -fomit-frame-pointer) ;;
3031             -g)                   echo -Z7 ;;
3032             -fno-math-errno)      ;;
3033             -fno-common)          ;;
3034             -fno-signed-zeros)    ;;
3035             -fPIC)                ;;
3036             -mthumb)              ;;
3037             -march=*)             ;;
3038             -lz)                  echo zlib.lib ;;
3039             -lavicap32)           echo vfw32.lib user32.lib ;;
3040             -lx264)               echo libx264.lib ;;
3041             -l*)                  echo ${flag#-l}.lib ;;
3042             -L*)                  echo -libpath:${flag#-L} ;;
3043             *)                    echo $flag ;;
3044         esac
3045     done
3046 }
3047
3048 msvc_flags(){
3049     msvc_common_flags "$@"
3050     for flag; do
3051         case $flag in
3052             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3053                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3054                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3055                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3056         esac
3057     done
3058 }
3059
3060 icl_flags(){
3061     msvc_common_flags "$@"
3062     for flag; do
3063         case $flag in
3064             # Despite what Intel's documentation says -Wall, which is supported
3065             # on Windows, does enable remarks so disable them here.
3066             -Wall)                echo $flag -Qdiag-disable:remark ;;
3067             -std=c99)             echo -Qstd=c99 ;;
3068         esac
3069     done
3070 }
3071
3072 pgi_flags(){
3073     for flag; do
3074         case $flag in
3075             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3076             -fomit-frame-pointer) echo -Mnoframe ;;
3077             -g)                   echo -gopt ;;
3078             *)                    echo $flag ;;
3079         esac
3080     done
3081 }
3082
3083 suncc_flags(){
3084     for flag; do
3085         case $flag in
3086             -march=*|-mcpu=*)
3087                 case "${flag#*=}" in
3088                     native)                   echo -xtarget=native       ;;
3089                     v9|niagara)               echo -xarch=sparc          ;;
3090                     ultrasparc)               echo -xarch=sparcvis       ;;
3091                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3092                     i586|pentium)             echo -xchip=pentium        ;;
3093                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3094                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3095                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3096                     pentium4*)          echo -xtarget=pentium4           ;;
3097                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3098                     *-sse3)             echo -xarch=sse3                 ;;
3099                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3100                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3101                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3102                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3103                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3104                     k8|opteron|athlon64|athlon-fx)
3105                                                echo -xarch=sse2a         ;;
3106                     athlon*)                   echo -xarch=pentium_proa  ;;
3107                 esac
3108                 ;;
3109             -std=c99)             echo -xc99              ;;
3110             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3111             -fPIC)                echo -KPIC -xcode=pic32 ;;
3112             -W*,*)                echo $flag              ;;
3113             -f*-*|-W*|-mimpure-text)                      ;;
3114             -shared)              echo -G                 ;;
3115             *)                    echo $flag              ;;
3116         esac
3117     done
3118 }
3119
3120 tms470_flags(){
3121     for flag; do
3122         case $flag in
3123             -march=*|-mcpu=*)
3124                 case "${flag#*=}" in
3125                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3126                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3127                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3128                     armv6*|arm11*)          echo -mv=6   ;;
3129                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3130                                             echo -mv=5e  ;;
3131                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3132                 esac
3133                 ;;
3134             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3135             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3136             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3137             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3138             -msoft-float)   echo --float_support=vfplib       ;;
3139             -O[0-3]|-mf=*)  echo $flag                        ;;
3140             -g)             echo -g -mn                       ;;
3141             -pds=*)         echo $flag                        ;;
3142             -D*|-I*)        echo $flag                        ;;
3143             --gcc|--abi=*)  echo $flag                        ;;
3144             -me)            echo $flag                        ;;
3145         esac
3146     done
3147 }
3148
3149 probe_cc(){
3150     pfx=$1
3151     _cc=$2
3152
3153     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3154     unset _ld_o _ldflags _ld_lib _ld_path
3155     unset _depflags _DEPCMD _DEPFLAGS
3156     _flags_filter=echo
3157
3158     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3159         _type=llvm_gcc
3160         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3161         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3162         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3163         _cflags_speed='-O3'
3164         _cflags_size='-Os'
3165     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3166         _type=gcc
3167         gcc_version=$($_cc --version | head -n1)
3168         gcc_basever=$($_cc -dumpversion)
3169         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3170         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3171         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3172         if ! $_cc -dumpversion | grep -q '^2\.'; then
3173             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3174         fi
3175         _cflags_speed='-O3'
3176         _cflags_size='-Os'
3177     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3178         _type=icc
3179         _ident=$($_cc --version | head -n1)
3180         _depflags='-MMD'
3181         _cflags_speed='-O3'
3182         _cflags_size='-Os'
3183         _cflags_noopt='-O1'
3184     elif $_cc -v 2>&1 | grep -q xlc; then
3185         _type=xlc
3186         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3187         _cflags_speed='-O5'
3188         _cflags_size='-O5 -qcompact'
3189     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3190         _type=ccc
3191         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3192         _DEPFLAGS='-M'
3193         _cflags_speed='-fast'
3194         _cflags_size='-O1'
3195         _flags_filter=ccc_flags
3196     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3197         test -d "$sysroot" || die "No valid sysroot specified."
3198         _type=armcc
3199         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3200         armcc_conf="$PWD/armcc.conf"
3201         $_cc --arm_linux_configure                 \
3202              --arm_linux_config_file="$armcc_conf" \
3203              --configure_sysroot="$sysroot"        \
3204              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3205              die "Error creating armcc configuration file."
3206         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3207         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3208         as_default="${cross_prefix}gcc"
3209         _depflags='-MMD'
3210         _cflags_speed='-O3'
3211         _cflags_size='-Os'
3212     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3213         _type=tms470
3214         _ident=$($_cc -version | head -n1 | tr -s ' ')
3215         _flags='--gcc --abi=eabi -me'
3216         _cc_e='-ppl -fe=$@'
3217         _cc_o='-fe=$@'
3218         _depflags='-ppa -ppd=$(@:.o=.d)'
3219         _cflags_speed='-O3 -mf=5'
3220         _cflags_size='-O3 -mf=2'
3221         _flags_filter=tms470_flags
3222     elif $_cc -v 2>&1 | grep -q clang; then
3223         _type=clang
3224         _ident=$($_cc --version 2>/dev/null | head -n1)
3225         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3226         _cflags_speed='-O3'
3227         _cflags_size='-Os'
3228     elif $_cc -V 2>&1 | grep -q Sun; then
3229         _type=suncc
3230         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3231         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3232         _DEPFLAGS='-xM1 -xc99'
3233         _ldflags='-std=c99'
3234         _cflags_speed='-O5'
3235         _cflags_size='-O5 -xspace'
3236         _flags_filter=suncc_flags
3237     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3238         _type=pathscale
3239         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3240         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3241         _cflags_speed='-O2'
3242         _cflags_size='-Os'
3243         _flags_filter='filter_out -Wdisabled-optimization'
3244     elif $_cc -v 2>&1 | grep -q Open64; then
3245         _type=open64
3246         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3247         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3248         _cflags_speed='-O2'
3249         _cflags_size='-Os'
3250         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3251     elif $_cc -V 2>&1 | grep -q Portland; then
3252         _type=pgi
3253         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3254         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3255         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3256         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3257         _cflags_noopt="-O1"
3258         _flags_filter=pgi_flags
3259     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3260         _type=armasm
3261         _ident=$($_cc | head -n1)
3262         # 4509: "This form of conditional instruction is deprecated"
3263         _flags="-nologo -ignore 4509"
3264         _flags_filter=armasm_flags
3265     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3266         _type=msvc
3267         _ident=$($_cc 2>&1 | head -n1)
3268         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3269         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3270         _cflags_speed="-O2"
3271         _cflags_size="-O1"
3272         if $_cc -nologo- 2>&1 | grep -q Linker; then
3273             _ld_o='-out:$@'
3274         else
3275             _ld_o='-Fe$@'
3276         fi
3277         _cc_o='-Fo$@'
3278         _cc_e='-P -Fi$@'
3279         _flags_filter=msvc_flags
3280         _ld_lib='lib%.a'
3281         _ld_path='-libpath:'
3282         _flags='-nologo'
3283     elif $_cc 2>&1 | grep -q Intel; then
3284         _type=icl
3285         _ident=$($_cc 2>&1 | head -n1)
3286         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3287         # Not only is O3 broken on 13.x+ but it is slower on all previous
3288         # versions (tested) as well.
3289         _cflags_speed="-O2"
3290         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3291         if $_cc 2>&1 | grep -q Linker; then
3292             _ld_o='-out:$@'
3293         else
3294             _ld_o='-Fe$@'
3295         fi
3296         _cc_o='-Fo$@'
3297         _cc_e='-P'
3298         _flags_filter=icl_flags
3299         _ld_lib='lib%.a'
3300         _ld_path='-libpath:'
3301         # -Qdiag-error to make icl error when seeing certain unknown arguments
3302         _flags='-nologo -Qdiag-error:4044,10157'
3303         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3304         # with MSVC which enables it by default.
3305         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3306     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3307         # lld can emulate multiple different linkers; in ms link.exe mode,
3308         # the -? parameter gives the help output which contains an identifyable
3309         # string, while it gives an error in other modes.
3310         _type=lld-link
3311         # The link.exe mode doesn't have a switch for getting the version,
3312         # but we can force it back to gnu mode and get the version from there.
3313         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3314         _ld_o='-out:$@'
3315         _flags_filter=msvc_flags
3316         _ld_lib='lib%.a'
3317         _ld_path='-libpath:'
3318     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3319         _type=cparser
3320         _ident=$($_cc --version | head -n1)
3321         _depflags='-MMD'
3322         _cflags_speed='-O4'
3323         _cflags_size='-O2'
3324         _flags_filter=cparser_flags
3325     fi
3326
3327     eval ${pfx}_type=\$_type
3328     eval ${pfx}_ident=\$_ident
3329 }
3330
3331 set_ccvars(){
3332     eval ${1}_C=\${_cc_c-\${${1}_C}}
3333     eval ${1}_E=\${_cc_e-\${${1}_E}}
3334     eval ${1}_O=\${_cc_o-\${${1}_O}}
3335
3336     if [ -n "$_depflags" ]; then
3337         eval ${1}_DEPFLAGS=\$_depflags
3338     else
3339         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3340         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3341         eval DEP${1}FLAGS=\$_flags
3342     fi
3343 }
3344
3345 probe_cc cc "$cc"
3346 cflags_filter=$_flags_filter
3347 cflags_speed=$_cflags_speed
3348 cflags_size=$_cflags_size
3349 cflags_noopt=$_cflags_noopt
3350 add_cflags $_flags $_cflags
3351 cc_ldflags=$_ldflags
3352 set_ccvars CC
3353
3354 probe_cc hostcc "$host_cc"
3355 host_cflags_filter=$_flags_filter
3356 add_host_cflags  $_flags $_cflags
3357 set_ccvars HOSTCC
3358
3359 test -n "$cc_type" && enable $cc_type ||
3360     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3361
3362 : ${as_default:=$cc}
3363 : ${objcc_default:=$cc}
3364 : ${dep_cc_default:=$cc}
3365 : ${ld_default:=$cc}
3366 : ${host_ld_default:=$host_cc}
3367 set_default ar as objcc dep_cc ld host_ld
3368
3369 probe_cc as "$as"
3370 asflags_filter=$_flags_filter
3371 add_asflags $_flags $_cflags
3372 set_ccvars AS
3373
3374 probe_cc objcc "$objcc"
3375 objcflags_filter=$_flags_filter
3376 add_objcflags $_flags $_cflags
3377 set_ccvars OBJC
3378
3379 probe_cc ld "$ld"
3380 ldflags_filter=$_flags_filter
3381 add_ldflags $_flags $_ldflags
3382 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3383 LD_O=${_ld_o-$LD_O}
3384 LD_LIB=${_ld_lib-$LD_LIB}
3385 LD_PATH=${_ld_path-$LD_PATH}
3386
3387 probe_cc hostld "$host_ld"
3388 host_ldflags_filter=$_flags_filter
3389 add_host_ldflags $_flags $_ldflags
3390 HOSTLD_O=${_ld_o-$HOSTLD_O}
3391
3392 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3393     probe_cc depcc "$dep_cc"
3394     CCDEP=${_DEPCMD:-$DEPCMD}
3395     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3396     DEPCCFLAGS=$_flags
3397 fi
3398
3399 if $ar 2>&1 | grep -q Microsoft; then
3400     arflags="-nologo"
3401     ar_o='-out:$@'
3402 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3403     arflags="rq"
3404     ar_o='$@'
3405 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3406     arflags='-Xany -r -c'
3407     ar_o='$@'
3408 else
3409     arflags="rc"
3410     ar_o='$@'
3411 fi
3412
3413 add_cflags $extra_cflags
3414 add_objcflags $extra_objcflags
3415 add_asflags $extra_cflags
3416
3417 if test -n "$sysroot"; then
3418     case "$cc_type" in
3419         gcc|llvm_gcc|clang)
3420             add_cppflags --sysroot="$sysroot"
3421             add_ldflags --sysroot="$sysroot"
3422         ;;
3423         tms470)
3424             add_cppflags -I"$sysinclude"
3425             add_ldflags  --sysroot="$sysroot"
3426         ;;
3427     esac
3428 fi
3429
3430 if test "$cpu" = host; then
3431     enabled cross_compile &&
3432         die "--cpu=host makes no sense when cross-compiling."
3433
3434     case "$cc_type" in
3435         gcc|llvm_gcc)
3436             check_native(){
3437                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3438                 sed -n "/cc1.*$1=/{
3439                             s/.*$1=\\([^ ]*\\).*/\\1/
3440                             p
3441                             q
3442                         }" $TMPE
3443             }
3444             cpu=$(check_native -march || check_native -mcpu)
3445         ;;
3446     esac
3447
3448     test "${cpu:-host}" = host &&
3449         die "--cpu=host not supported with compiler $cc"
3450 fi
3451
3452 # Deal with common $arch aliases
3453 case "$arch" in
3454     aarch64|arm64)
3455         arch="aarch64"
3456     ;;
3457     arm*)
3458         arch="arm"
3459     ;;
3460     mips*|IP*)
3461         case "$arch" in
3462         *el)
3463             add_cppflags -EL
3464             add_ldflags -EL
3465         ;;
3466         *eb)
3467             add_cppflags -EB
3468             add_ldflags -EB
3469         ;;
3470         esac
3471         arch="mips"
3472     ;;
3473     parisc*|hppa*)
3474         arch="parisc"
3475     ;;
3476     "Power Macintosh"|ppc*|powerpc*)
3477         arch="ppc"
3478     ;;
3479     s390|s390x)
3480         arch="s390"
3481     ;;
3482     sh4|sh)
3483         arch="sh4"
3484     ;;
3485     sun4u|sparc*)
3486         arch="sparc"
3487     ;;
3488     tilegx|tile-gx)
3489         arch="tilegx"
3490     ;;
3491     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3492         arch="x86"
3493     ;;
3494 esac
3495
3496 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3497 enable $arch
3498
3499 # Add processor-specific flags
3500 if enabled aarch64; then
3501
3502     case $cpu in
3503         armv*)
3504             cpuflags="-march=$cpu"
3505         ;;
3506         *)
3507             cpuflags="-mcpu=$cpu"
3508         ;;
3509     esac
3510
3511 elif enabled alpha; then
3512
3513     cpuflags="-mcpu=$cpu"
3514
3515 elif enabled arm; then
3516
3517     check_arm_arch() {
3518         check_cpp_condition stddef.h \
3519             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3520             $cpuflags
3521     }
3522
3523     probe_arm_arch() {
3524         if   check_arm_arch 4;        then echo armv4
3525         elif check_arm_arch 4T;       then echo armv4t
3526         elif check_arm_arch 5;        then echo armv5
3527         elif check_arm_arch 5E;       then echo armv5e
3528         elif check_arm_arch 5T;       then echo armv5t
3529         elif check_arm_arch 5TE;      then echo armv5te
3530         elif check_arm_arch 5TEJ;     then echo armv5te
3531         elif check_arm_arch 6;        then echo armv6
3532         elif check_arm_arch 6J;       then echo armv6j
3533         elif check_arm_arch 6K;       then echo armv6k
3534         elif check_arm_arch 6Z;       then echo armv6z
3535         elif check_arm_arch 6ZK;      then echo armv6zk
3536         elif check_arm_arch 6T2;      then echo armv6t2
3537         elif check_arm_arch 7;        then echo armv7
3538         elif check_arm_arch 7A  7_A;  then echo armv7-a
3539         elif check_arm_arch 7S;       then echo armv7-a
3540         elif check_arm_arch 7R  7_R;  then echo armv7-r
3541         elif check_arm_arch 7M  7_M;  then echo armv7-m
3542         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3543         elif check_arm_arch 8A  8_A;  then echo armv8-a
3544         fi
3545     }
3546
3547     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3548
3549     case $cpu in
3550         armv*)
3551             cpuflags="-march=$cpu"
3552             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3553         ;;
3554         *)
3555             cpuflags="-mcpu=$cpu"
3556             case $cpu in
3557                 cortex-a*)                               subarch=armv7a  ;;
3558                 cortex-r*)                               subarch=armv7r  ;;
3559                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3560                 arm11*)                                  subarch=armv6   ;;
3561                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3562                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3563                 *)                             subarch=$(probe_arm_arch) ;;
3564             esac
3565         ;;
3566     esac
3567
3568     case "$subarch" in
3569         armv5t*)    enable fast_clz                ;;
3570         armv[6-8]*) enable fast_clz fast_unaligned ;;
3571     esac
3572
3573 elif enabled avr32; then
3574
3575     case $cpu in
3576         ap7[02]0[0-2])
3577             subarch="avr32_ap"
3578             cpuflags="-mpart=$cpu"
3579         ;;
3580         ap)
3581             subarch="avr32_ap"
3582             cpuflags="-march=$cpu"
3583         ;;
3584         uc3[ab]*)
3585             subarch="avr32_uc"
3586             cpuflags="-mcpu=$cpu"
3587         ;;
3588         uc)
3589             subarch="avr32_uc"
3590             cpuflags="-march=$cpu"
3591         ;;
3592     esac
3593
3594 elif enabled bfin; then
3595
3596     cpuflags="-mcpu=$cpu"
3597
3598 elif enabled mips; then
3599
3600     cpuflags="-march=$cpu"
3601
3602 elif enabled ppc; then
3603
3604     disable ldbrx
3605
3606     case $(tolower $cpu) in
3607         601|ppc601|powerpc601)
3608             cpuflags="-mcpu=601"
3609             disable altivec
3610         ;;
3611         603*|ppc603*|powerpc603*)
3612             cpuflags="-mcpu=603"
3613             disable altivec
3614         ;;
3615         604*|ppc604*|powerpc604*)
3616             cpuflags="-mcpu=604"
3617             disable altivec
3618         ;;
3619         g3|75*|ppc75*|powerpc75*)
3620             cpuflags="-mcpu=750"
3621             disable altivec
3622         ;;
3623         g4|745*|ppc745*|powerpc745*)
3624             cpuflags="-mcpu=7450"
3625             disable vsx
3626         ;;
3627         74*|ppc74*|powerpc74*)
3628             cpuflags="-mcpu=7400"
3629             disable vsx
3630         ;;
3631         g5|970|ppc970|powerpc970)
3632             cpuflags="-mcpu=970"
3633             disable vsx
3634         ;;
3635         power[3-6]*)
3636             cpuflags="-mcpu=$cpu"
3637             disable vsx
3638         ;;
3639         power[7-8]*)
3640             cpuflags="-mcpu=$cpu"
3641             enable ldbrx
3642         ;;
3643         cell)
3644             cpuflags="-mcpu=cell"
3645             enable ldbrx
3646             disable vsx
3647         ;;
3648         e500mc)
3649             cpuflags="-mcpu=e500mc"
3650             disable altivec
3651         ;;
3652         e500v2)
3653             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3654             disable altivec
3655             disable dcbzl
3656         ;;
3657         e500)
3658             cpuflags="-mcpu=8540 -mhard-float"
3659             disable altivec
3660             disable dcbzl
3661         ;;
3662     esac
3663
3664 elif enabled sparc; then
3665
3666     case $cpu in
3667         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3668             cpuflags="-mcpu=$cpu"
3669         ;;
3670         ultrasparc*|niagara[234])
3671             cpuflags="-mcpu=$cpu"
3672         ;;
3673     esac
3674
3675 elif enabled x86; then
3676
3677     case $cpu in
3678         i[345]86|pentium)
3679             cpuflags="-march=$cpu"
3680             disable i686
3681             disable mmx
3682         ;;
3683         # targets that do NOT support nopl and conditional mov (cmov)
3684         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3685             cpuflags="-march=$cpu"
3686             disable i686
3687         ;;
3688         # targets that do support nopl and conditional mov (cmov)
3689         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3690             cpuflags="-march=$cpu"
3691             enable i686
3692             enable fast_cmov
3693         ;;
3694         # targets that do support conditional mov but on which it's slow
3695         pentium4|pentium4m|prescott|nocona)
3696             cpuflags="-march=$cpu"
3697             enable i686
3698             disable fast_cmov
3699         ;;
3700     esac
3701
3702 fi
3703
3704 if [ "$cpu" != generic ]; then
3705     add_cflags  $cpuflags
3706     add_asflags $cpuflags
3707     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3708 fi
3709
3710 # compiler sanity check
3711 check_exec <<EOF
3712 int main(void){ return 0; }
3713 EOF
3714 if test "$?" != 0; then
3715     echo "$cc is unable to create an executable file."
3716     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3717         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3718         echo "Only do this if you know what cross compiling means."
3719     fi
3720     die "C compiler test failed."
3721 fi
3722
3723 add_cppflags -D_ISOC99_SOURCE
3724
3725 # some compilers silently accept -std=c11, so we also need to check that the
3726 # version macro is defined properly
3727 if test_cflags_cpp -std=c11 "__STDC_VERSION__ >= 201112L"; then
3728     add_cflags -std=c11
3729 else
3730     check_cflags -std=c99
3731 fi
3732
3733 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3734 #include <stdlib.h>
3735 EOF
3736 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3737 #include <stdlib.h>
3738 EOF
3739
3740 add_host_cppflags -D_ISOC99_SOURCE
3741 check_host_cflags -std=c99
3742 check_host_cflags -Wall
3743 check_host_cflags -O3
3744
3745 check_64bit(){
3746     arch32=$1
3747     arch64=$2
3748     expr=$3
3749     check_code cc "" "int test[2*($expr) - 1]" &&
3750         subarch=$arch64 || subarch=$arch32
3751 }
3752
3753 case "$arch" in
3754     aarch64|alpha|ia64)
3755         spic=$shared
3756     ;;
3757     mips)
3758         check_64bit mips mips64 '_MIPS_SIM > 1'
3759         spic=$shared
3760     ;;
3761     parisc)
3762         check_64bit parisc parisc64 'sizeof(void *) > 4'
3763         spic=$shared
3764     ;;
3765     ppc)
3766         check_64bit ppc ppc64 'sizeof(void *) > 4'
3767         spic=$shared
3768     ;;
3769     s390)
3770         check_64bit s390 s390x 'sizeof(void *) > 4'
3771         spic=$shared
3772     ;;
3773     sparc)
3774         check_64bit sparc sparc64 'sizeof(void *) > 4'
3775         spic=$shared
3776     ;;
3777     x86)
3778         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3779         if test "$subarch" = "x86_64"; then
3780             spic=$shared
3781         fi
3782     ;;
3783 esac
3784
3785 enable $subarch
3786 enabled spic && enable_weak pic
3787
3788 # OS specific
3789 case $target_os in
3790     aix)
3791         SHFLAGS=-shared
3792         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3793         enabled shared && add_ldflags -Wl,-brtl
3794         ;;
3795     android)
3796         disable symver
3797         enable section_data_rel_ro
3798         SLIB_INSTALL_NAME='$(SLIBNAME)'
3799         SLIB_INSTALL_LINKS=
3800         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3801         ;;
3802     haiku)
3803         prefix_default="/boot/common"
3804         network_extralibs="-lnetwork"
3805         host_libs=
3806         ;;
3807     sunos)
3808         SHFLAGS='-shared -Wl,-h,$$(@F)'
3809         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3810         network_extralibs="-lsocket -lnsl"
3811         # When using suncc to build, the Solaris linker will mark
3812         # an executable with each instruction set encountered by
3813         # the Solaris assembler.  As our libraries contain their own
3814         # guards for processor-specific code, instead suppress
3815         # generation of the HWCAPS ELF section on Solaris x86 only.
3816         enabled_all suncc x86 &&
3817             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3818             add_ldflags -Wl,-M,mapfile
3819         nm_default='nm -P -g'
3820         version_script='-M'
3821         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3822         ;;
3823     netbsd)
3824         disable symver
3825         oss_indev_extralibs="-lossaudio"
3826         oss_outdev_extralibs="-lossaudio"
3827         ;;
3828     openbsd|bitrig)
3829         disable symver
3830         SHFLAGS='-shared'
3831         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3832         SLIB_INSTALL_LINKS=
3833         oss_indev_extralibs="-lossaudio"
3834         oss_outdev_extralibs="-lossaudio"
3835         ;;
3836     dragonfly)
3837         disable symver
3838         ;;
3839     freebsd)
3840         ;;
3841     bsd/os)
3842         add_extralibs -lpoll -lgnugetopt
3843         ;;
3844     darwin)
3845         enabled ppc && add_asflags -force_cpusubtype_ALL
3846         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3847         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3848         add_ldflags -Wl,-dynamic,-search_paths_first
3849         SLIBSUF=".dylib"
3850         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3851         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3852         objformat="macho"
3853         enabled x86_64 && objformat="macho64"
3854         enabled_any pic shared ||
3855             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3856         check_header dispatch/dispatch.h &&
3857             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3858         ;;
3859     msys*)
3860         die "Native MSYS builds are discouraged, please use the MINGW environment."
3861         ;;
3862     mingw32*|mingw64*)
3863         if test $target_os = "mingw32ce"; then
3864             disable network
3865         else
3866             target_os=mingw32
3867         fi
3868         LIBTARGET=i386
3869         if enabled x86_64; then
3870             LIBTARGET="i386:x86-64"
3871         elif enabled arm; then
3872             LIBTARGET=arm-wince
3873         fi
3874         check_ldflags -Wl,--nxcompat
3875         check_ldflags -Wl,--dynamicbase
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_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3882         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3883         SLIB_INSTALL_LINKS=
3884         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3885         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3886         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3887         objformat="win32"
3888         dlltool="${cross_prefix}dlltool"
3889         ranlib=:
3890         enable dos_paths
3891         ;;
3892     win32|win64)
3893         disable symver
3894         if enabled shared; then
3895             # Link to the import library instead of the normal static library
3896             # for shared libs.
3897             LD_LIB='%.lib'
3898             # Cannot build both shared and static libs with MSVC or icl.
3899             disable static
3900         fi
3901         shlibdir_default="$bindir_default"
3902         SLIBPREF=""
3903         SLIBSUF=".dll"
3904         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3905         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3906         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3907         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3908         SLIB_INSTALL_LINKS=
3909         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3910         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3911         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3912         objformat="win32"
3913         ranlib=:
3914         enable dos_paths
3915         ;;
3916     cygwin*)
3917         target_os=cygwin
3918         shlibdir_default="$bindir_default"
3919         SLIBPREF="cyg"
3920         SLIBSUF=".dll"
3921         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3922         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3923         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3924         SLIB_INSTALL_LINKS=
3925         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3926         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3927         objformat="win32"
3928         enable dos_paths
3929         ;;
3930     *-dos|freedos|opendos)
3931         network_extralibs="-lsocket"
3932         objformat="coff"
3933         enable dos_paths
3934         add_cppflags -U__STRICT_ANSI__
3935         ;;
3936     linux)
3937         enable dv1394
3938         enable section_data_rel_ro
3939         ;;
3940     irix*)
3941         target_os=irix
3942         ranlib="echo ignoring ranlib"
3943         ;;
3944     os/2*)
3945         ln_s="cp -f"
3946         objformat="aout"
3947         add_cppflags -D_GNU_SOURCE
3948         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3949         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3950         LIBSUF="_s.a"
3951         SLIBPREF=""
3952         SLIBSUF=".dll"
3953         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3954         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3955         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3956             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3957             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3958             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3959             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3960         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3961             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3962         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3963         enable dos_paths
3964         ;;
3965     gnu/kfreebsd)
3966         add_cppflags -D_BSD_SOURCE
3967         ;;
3968     gnu)
3969         ;;
3970     qnx)
3971         add_cppflags -D_QNX_SOURCE
3972         network_extralibs="-lsocket"
3973         ;;
3974     symbian)
3975         SLIBSUF=".dll"
3976         enable dos_paths
3977         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3978         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3979         add_ldflags -Wl,--target1-abs,--no-undefined \
3980                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3981                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3982         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3983                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3984                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3985         ;;
3986     osf1)
3987         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3988         ;;
3989     minix)
3990         ;;
3991     plan9)
3992         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3993                      -D_REENTRANT_SOURCE        \
3994                      -D_RESEARCH_SOURCE         \
3995                      -DFD_SETSIZE=96            \
3996                      -DHAVE_SOCK_OPTS
3997         add_compat strtod.o strtod=avpriv_strtod
3998         network_extralibs='-lbsd'
3999         exeobjs=compat/plan9/main.o
4000         cp_f='cp'
4001         ;;
4002     none)
4003         ;;
4004     *)
4005         die "Unknown OS '$target_os'."
4006         ;;
4007 esac
4008
4009 # determine libc flavour
4010
4011 probe_libc(){
4012     pfx=$1
4013     pfx_no_=${pfx%_}
4014     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4015     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4016         eval ${pfx}libc_type=uclibc
4017         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4018     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4019         eval ${pfx}libc_type=glibc
4020         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4021     # MinGW headers can be installed on Cygwin, so check for newlib first.
4022     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4023         eval ${pfx}libc_type=newlib
4024         add_${pfx}cppflags -U__STRICT_ANSI__
4025     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4026     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4027         eval ${pfx}libc_type=mingw64
4028         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4029         eval test \$${pfx_no_}cc_type = "gcc" &&
4030             add_${pfx}cppflags -D__printf__=__gnu_printf__
4031     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4032          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4033         eval ${pfx}libc_type=mingw32
4034         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4035             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4036             die "ERROR: MinGW32 runtime version must be >= 3.15."
4037         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4038         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
4039             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4040         eval test \$${pfx_no_}cc_type = "gcc" &&
4041             add_${pfx}cppflags -D__printf__=__gnu_printf__
4042     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4043         eval ${pfx}libc_type=msvcrt
4044         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4045             if [ "$pfx" = host_ ]; then
4046                 add_host_cppflags -Dsnprintf=_snprintf
4047             else
4048                 add_compat strtod.o strtod=avpriv_strtod
4049                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4050                                              _snprintf=avpriv_snprintf  \
4051                                              vsnprintf=avpriv_vsnprintf
4052             fi
4053         fi
4054         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4055         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4056         # 0x601 by default unless something else is set by the user.
4057         # This can easily lead to us detecting functions only present
4058         # in such new versions and producing binaries requiring windows 7.0.
4059         # Therefore explicitly set the default to XP unless the user has
4060         # set something else on the command line.
4061         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4062         # family. For these cases, configure is free to use any functions
4063         # found in the SDK headers by default. (Alternatively, we could force
4064         # _WIN32_WINNT to 0x0602 in that case.)
4065         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4066             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4067 #ifdef WINAPI_FAMILY
4068 #include <winapifamily.h>
4069 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4070 #error not desktop
4071 #endif
4072 #endif
4073 EOF
4074         if [ "$pfx" = "" ]; then
4075             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4076         fi
4077     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4078         eval ${pfx}libc_type=klibc
4079     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4080         eval ${pfx}libc_type=bionic
4081     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4082         eval ${pfx}libc_type=solaris
4083         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4084     else
4085         eval ${pfx}libc_type=default
4086         add_${pfx}cppflags -D_DEFAULT_SOURCE
4087     fi
4088 }
4089
4090 probe_libc
4091 test -n "$libc_type" && enable libc_$libc_type
4092 probe_libc host_
4093 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4094
4095 case $libc_type in
4096     bionic)
4097         add_compat strtod.o strtod=avpriv_strtod
4098         ;;
4099 esac
4100
4101 # hacks for compiler/libc/os combinations
4102
4103 if enabled_all tms470 libc_glibc; then
4104     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
4105     add_cppflags -D__USER_LABEL_PREFIX__=
4106     add_cppflags -D__builtin_memset=memset
4107     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
4108     add_cflags   -pds=48    # incompatible redefinition of macro
4109 fi
4110
4111 if enabled_all ccc libc_glibc; then
4112     add_ldflags -Wl,-z,now  # calls to libots crash without this
4113 fi
4114
4115 check_compile_assert flt_lim "float.h limits.h" "DBL_MAX == (double)DBL_MAX" ||
4116     add_cppflags '-I\$(SRC_PATH)/compat/float'
4117
4118 esc(){
4119     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
4120 }
4121
4122 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $LIBAV_CONFIGURATION)" >config.fate
4123
4124 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
4125
4126 set_default $PATHS_LIST
4127 set_default nm
4128
4129 # we need to build at least one lib type
4130 if ! enabled_any static shared; then
4131     cat <<EOF
4132 At least one library type must be built.
4133 Specify --enable-static to build the static libraries or --enable-shared to
4134 build the shared libraries as well. To only build the shared libraries specify
4135 --disable-static in addition to --enable-shared.
4136 EOF
4137     exit 1
4138 fi
4139
4140 disabled optimizations || check_cflags -fomit-frame-pointer
4141
4142 enable_weak_pic() {
4143     disabled pic && return
4144     enable pic
4145     add_cppflags -DPIC
4146     case "$target_os" in
4147     mingw*|cygwin*)
4148         ;;
4149     *)
4150         add_cflags -fPIC
4151         ;;
4152     esac
4153     add_asflags  -fPIC
4154 }
4155
4156 enabled pic && enable_weak_pic
4157
4158 check_cc <<EOF || die "Symbol mangling check failed."
4159 int ff_extern;
4160 EOF
4161 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4162 extern_prefix=${sym%%ff_extern*}
4163
4164 check_cc <<EOF && enable_weak inline_asm
4165 void foo(void) { __asm__ volatile ("" ::); }
4166 EOF
4167
4168 _restrict=
4169 for restrict_keyword in restrict __restrict__ __restrict; do
4170     check_cc <<EOF && _restrict=$restrict_keyword && break
4171 void foo(char * $restrict_keyword p);
4172 EOF
4173 done
4174
4175 check_cc <<EOF && enable pragma_deprecated
4176 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4177 EOF
4178
4179 check_cc <<EOF && enable attribute_packed
4180 struct { int x; } __attribute__((packed)) x;
4181 EOF
4182
4183 check_cc <<EOF && enable attribute_may_alias
4184 union { int x; } __attribute__((may_alias)) x;
4185 EOF
4186
4187 check_cc <<EOF || die "endian test failed"
4188 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
4189 EOF
4190 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
4191
4192 check_gas() {
4193     log "check_gas using '$as' as AS"
4194     # :vararg is used on aarch64, arm and ppc altivec
4195     check_as <<EOF || return 1
4196 .macro m n, y:vararg=0
4197 \n: .int \y
4198 .endm
4199 m x
4200 EOF
4201     # .altmacro is only used in arm asm
4202     ! enabled arm || check_as <<EOF || return 1
4203 .altmacro
4204 EOF
4205     enable gnu_as
4206     return 0
4207 }
4208
4209 if enabled_any arm aarch64 || enabled_all ppc altivec && enabled asm; then
4210     nogas=:
4211     enabled_any arm aarch64 && nogas=die
4212     enabled_all ppc altivec && nogas=warn
4213     as_noop=-v
4214
4215     case $as_type in
4216         arm*) gaspp_as_type=armasm; as_noop=-h ;;
4217         gcc)  gaspp_as_type=gas ;;
4218         *)    gaspp_as_type=$as_type ;;
4219     esac
4220
4221     [ $target_os = "darwin" ] && gaspp_as_type="apple-$gaspp_as_type"
4222
4223     check_cmd gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as $as_noop &&
4224         gas="gas-preprocessor.pl -arch $arch -as-type $gaspp_as_type -- $as"
4225
4226     if ! check_gas ; then
4227         as=${gas:=$as}
4228         check_gas || \
4229             $nogas "GNU assembler not found, install/update gas-preprocessor"
4230     fi
4231
4232     check_as <<EOF && enable as_func
4233 .func test
4234 .endfunc
4235 EOF
4236 fi
4237
4238 check_inline_asm inline_asm_labels '"1:\n"'
4239
4240 if enabled aarch64; then
4241     enabled armv8 && check_insn armv8 'prfm   pldl1strm, [x0]'
4242     # internal assembler in clang 3.3 does not support this instruction
4243     enabled neon && check_insn neon 'ext   v0.8B, v0.8B, v1.8B, #1'
4244     enabled vfp  && check_insn vfp  'fmadd d0,    d0,    d1,    d2'
4245
4246     map 'enabled_any ${v}_external ${v}_inline || disable $v' $ARCH_EXT_LIST_ARM
4247
4248 elif enabled alpha; then
4249
4250     check_cflags -mieee
4251
4252 elif enabled arm; then
4253
4254     enabled msvc && check_cpp_condition stddef.h "defined _M_ARMT" && enable thumb
4255     check_cpp_condition stddef.h "defined __thumb__" && enable_weak thumb
4256     enabled thumb && check_cflags -mthumb || check_cflags -marm
4257
4258     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
4259         enable vfp_args
4260     elif check_cpp_condition stddef.h "defined _M_ARM_FP && _M_ARM_FP >= 30"; then
4261         enable vfp_args
4262     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__" && [ $target_os != darwin ]; then
4263         case "${cross_prefix:-$cc}" in
4264             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
4265             *) check_ld <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
4266 __asm__ (".eabi_attribute 28, 1");
4267 int main(void) { return 0; }
4268 EOF
4269         esac
4270         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
4271     fi
4272
4273     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
4274     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
4275     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
4276     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
4277     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
4278     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
4279
4280     [ $target_os = linux ] || [ $target_os = android ] ||
4281         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
4282             $ARCH_EXT_LIST_ARM
4283
4284     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
4285
4286     check_as <<EOF && enable as_dn_directive
4287 ra .dn d0.i16
4288 .unreq ra
4289 EOF
4290     check_as <<EOF && enable as_fpu_directive
4291 .fpu neon
4292 EOF
4293
4294     # llvm's integrated assembler supports .object_arch from llvm 3.5
4295     [ "$objformat" = elf ] && check_as <<EOF && enable as_object_arch
4296 .object_arch armv4
4297 EOF
4298
4299     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
4300
4301 elif enabled mips; then
4302
4303     check_inline_asm loongson '"dmult.g $1, $2, $3"'
4304
4305     # make sure that only an instruction set is enabled
4306     disable mips64r6 mips32r6 mips64r2 mips32r2 mips64r1 mips32r1
4307
4308     if enabled mips64; then
4309         check_inline_asm mips64r6 '"dlsa $0, $0, $0, 1"' ||
4310             check_inline_asm mips64r2 '"dext $0, $0, 0, 1"' ||
4311                 check_inline_asm mips64r1 '"daddi $0, $0, 0"'
4312     else
4313         check_inline_asm mips32r6 '"aui $0, $0, 0"' ||
4314             check_inline_asm mips32r2 '"ext $0, $0, 0, 1"' ||
4315                 check_inline_asm mips32r1 '"addi $0, $0, 0"'
4316     fi
4317
4318 elif enabled parisc; then
4319
4320     if enabled gcc; then
4321         case $($cc -dumpversion) in
4322             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
4323         esac
4324     fi
4325
4326 elif enabled ppc; then
4327
4328     enable local_aligned_8 local_aligned_16 local_aligned_32
4329
4330     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
4331     check_inline_asm ibm_asm   '"add 0, 0, 0"'
4332     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
4333     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
4334
4335     # AltiVec flags: The FSF version of GCC differs from the Apple version
4336     if enabled altivec; then
4337         check_cflags -maltivec -mabi=altivec &&
4338         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
4339         check_cflags -faltivec
4340
4341         # check if our compiler supports Motorola AltiVec C API
4342         check_cc <<EOF || disable altivec
4343 $inc_altivec_h
4344 int main(void) {
4345     vector signed int v1 = (vector signed int) { 0 };
4346     vector signed int v2 = (vector signed int) { 1 };
4347     v1 = vec_add(v1, v2);
4348     return 0;
4349 }
4350 EOF
4351
4352         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
4353     fi
4354
4355     if enabled vsx; then
4356         check_cflags -mvsx &&
4357         check_builtin vec_vsx_ld "altivec.h" "__builtin_vec_vsx_ld" || disable vsx
4358     fi
4359
4360     if enabled power8; then
4361         check_cpp_condition "altivec.h" "defined(_ARCH_PWR8)" || disable power8
4362     fi
4363
4364 elif enabled x86; then
4365
4366     check_builtin rdtsc    intrin.h   "__rdtsc()"
4367     check_builtin mm_empty mmintrin.h "_mm_empty()"
4368
4369     enable local_aligned_8 local_aligned_16 local_aligned_32
4370
4371     # check whether EBP is available on x86
4372     # As 'i' is stored on the stack, this program will crash
4373     # if the base pointer is used to access it because the
4374     # base pointer is cleared in the inline assembly code.
4375     check_exec_crash <<EOF && enable ebp_available
4376 volatile int i=0;
4377 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
4378 return i;
4379 EOF
4380
4381     # check whether EBX is available on x86
4382     check_inline_asm ebx_available '""::"b"(0)' &&
4383         check_inline_asm ebx_available '"":::"%ebx"'
4384
4385     # check whether xmm clobbers are supported
4386     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4387
4388     # check whether binutils is new enough to compile SSSE3/MMXEXT
4389     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4390     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4391
4392     if ! disabled_any asm mmx yasm; then
4393         if check_cmd $yasmexe --version; then
4394             enabled x86_64 && yasm_extra="-m amd64"
4395             yasm_debug="-g dwarf2"
4396         elif check_cmd nasm -v; then
4397             yasmexe=nasm
4398             yasm_debug="-g -F dwarf"
4399             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4400         fi
4401
4402         YASMFLAGS="-f $objformat $yasm_extra"
4403         enabled pic               && append YASMFLAGS "-DPIC"
4404         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4405         case "$objformat" in
4406             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4407         esac
4408
4409         check_yasm "movbe ecx, [5]" && enable yasm ||
4410             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4411         check_yasm "vextracti128 xmm0, ymm0, 0"      || disable avx2_external
4412         check_yasm "vpmacsdd xmm0, xmm1, xmm2, xmm3" || disable xop_external
4413         check_yasm "vfmadd132ps ymm0, ymm1, ymm2"    || disable fma3_external
4414         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4415         check_yasm "CPU amdnop" || disable cpunop
4416     fi
4417
4418     case "$cpu" in
4419         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4420             disable fast_clz
4421         ;;
4422     esac
4423
4424 fi
4425
4426 check_code cc arm_neon.h "int16x8_t test = vdupq_n_s16(0)" && enable intrinsics_neon
4427
4428 check_ldflags -Wl,--as-needed
4429
4430 if check_func dlopen; then
4431     ldl=
4432 elif check_func dlopen -ldl; then
4433     ldl=-ldl
4434 fi
4435
4436 if ! disabled network; then
4437     check_func getaddrinfo $network_extralibs
4438     check_func inet_aton $network_extralibs
4439
4440     check_type netdb.h "struct addrinfo"
4441     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4442     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4443     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4444     check_type poll.h "struct pollfd"
4445     check_type netinet/sctp.h "struct sctp_event_subscribe"
4446     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4447     check_type netinet/in.h "struct sockaddr_in6"
4448     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4449     check_type "sys/types.h sys/socket.h" socklen_t
4450
4451     # Prefer arpa/inet.h over winsock2
4452     if check_header arpa/inet.h ; then
4453         check_func closesocket
4454     elif check_header winsock2.h ; then
4455         check_func_headers winsock2.h closesocket -lws2 &&
4456             network_extralibs="-lws2" ||
4457         { check_func_headers winsock2.h closesocket -lws2_32 &&
4458             network_extralibs="-lws2_32"; } || disable winsock2_h network
4459         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4460
4461         check_type ws2tcpip.h socklen_t
4462         check_type ws2tcpip.h "struct addrinfo"
4463         check_type ws2tcpip.h "struct group_source_req"
4464         check_type ws2tcpip.h "struct ip_mreq_source"
4465         check_type ws2tcpip.h "struct ipv6_mreq"
4466         check_type winsock2.h "struct pollfd"
4467         check_struct winsock2.h "struct sockaddr" sa_len
4468         check_type ws2tcpip.h "struct sockaddr_in6"
4469         check_type ws2tcpip.h "struct sockaddr_storage"
4470     else
4471         disable network
4472     fi
4473 fi
4474
4475 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4476 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4477 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4478 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4479
4480 case "$custom_allocator" in
4481     jemalloc)
4482         # jemalloc by default does not use a prefix
4483         require libjemalloc jemalloc/jemalloc.h malloc -ljemalloc
4484     ;;
4485     tcmalloc)
4486         require_pkg_config libtcmalloc gperftools/tcmalloc.h tc_malloc
4487         malloc_prefix=tc_
4488     ;;
4489 esac
4490
4491 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4492 check_func  ${malloc_prefix}memalign            && enable memalign
4493 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4494
4495 check_cpp_condition unistd.h "defined(_POSIX_MONOTONIC_CLOCK)" &&
4496     check_func_headers time.h clock_gettime ||
4497         { check_lib time.h clock_gettime -lrt && LIBRT="-lrt"; }
4498
4499 check_func  fcntl
4500 check_func  fork
4501 check_func  gethrtime
4502 check_func  getopt
4503 check_func  getrusage
4504 check_func  gettimeofday
4505 check_func  gmtime_r
4506 check_func  isatty
4507 check_func  localtime_r
4508 check_func  mach_absolute_time
4509 check_func  mkstemp
4510 check_func  mmap
4511 check_func  mprotect
4512 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4513 check_func_headers time.h nanosleep || { check_func_headers time.h nanosleep -lrt && add_extralibs -lrt; }
4514 check_func  sched_getaffinity
4515 check_func  setrlimit
4516 check_func  strerror_r
4517 check_func  sysconf
4518 check_func  sysctl
4519 check_func  usleep
4520
4521 check_func_headers io.h setmode
4522 check_func_headers stdlib.h getenv
4523
4524 check_func_headers windows.h CoTaskMemFree -lole32
4525 check_func_headers windows.h GetProcessAffinityMask
4526 check_func_headers windows.h GetProcessTimes
4527 check_func_headers windows.h GetSystemTimeAsFileTime
4528 check_func_headers windows.h LoadLibrary
4529 check_func_headers windows.h MapViewOfFile
4530 check_func_headers windows.h SetConsoleTextAttribute
4531 check_func_headers windows.h Sleep
4532 check_func_headers windows.h VirtualAlloc
4533 check_struct windows.h "CONDITION_VARIABLE" Ptr
4534
4535 check_header direct.h
4536 check_header dlfcn.h
4537 check_header d3d11.h
4538 check_header dxva.h
4539 check_header dxva2api.h
4540 check_header io.h
4541 check_header mach/mach_time.h
4542 check_header malloc.h
4543 check_header poll.h
4544 check_header sys/mman.h
4545 check_header sys/param.h
4546 check_header sys/resource.h
4547 check_header sys/select.h
4548 check_header sys/time.h
4549 check_header sys/un.h
4550 check_header unistd.h
4551 check_header valgrind/valgrind.h
4552 check_header vdpau/vdpau.h
4553 check_header vdpau/vdpau_x11.h
4554 check_header VideoDecodeAcceleration/VDADecoder.h
4555 check_header windows.h
4556 check_header X11/extensions/XvMClib.h
4557
4558 # it seems there are versions of clang in some distros that try to use the
4559 # gcc headers, which explodes for stdatomic
4560 # so we also check that atomics actually work here
4561 check_builtin stdatomic_h stdatomic.h "atomic_int foo; atomic_store(&foo, 0)"
4562
4563 check_lib "windows.h shellapi.h" CommandLineToArgvW   -lshell32
4564 check_lib "windows.h wincrypt.h" CryptGenRandom       -ladvapi32
4565 check_lib "windows.h psapi.h"    GetProcessMemoryInfo -lpsapi
4566
4567 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4568
4569 check_type "windows.h dxva.h" "DXVA_PicParams_HEVC" -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -D_CRT_BUILD_DESKTOP_APP=0
4570 check_type "windows.h d3d11.h" "ID3D11VideoDecoder"
4571 check_type "d3d9.h dxva2api.h" DXVA2_ConfigPictureDecode -D_WIN32_WINNT=0x0602
4572
4573 check_type "va/va.h va/va_dec_vp8.h" "VAPictureParameterBufferVP8"
4574 check_type "va/va.h va/va_vpp.h" "VAProcPipelineParameterBuffer"
4575 check_type "va/va.h va/va_enc_h264.h" "VAEncPictureParameterBufferH264"
4576 check_type "va/va.h va/va_enc_hevc.h" "VAEncPictureParameterBufferHEVC"
4577 check_type "va/va.h va/va_enc_jpeg.h" "VAEncPictureParameterBufferJPEG"
4578
4579 check_type "vdpau/vdpau.h" "VdpPictureInfoHEVC"
4580
4581 if ! disabled w32threads && ! enabled pthreads; then
4582     check_func_headers "windows.h process.h" _beginthreadex &&
4583         enable w32threads || disable w32threads
4584 fi
4585
4586 # check for some common methods of building with pthread support
4587 # do this before the optional library checks as some of them require pthreads
4588 if ! disabled pthreads && ! enabled w32threads; then
4589     enable pthreads
4590     if check_func pthread_join -pthread; then
4591         add_cflags -pthread
4592         add_extralibs -pthread
4593     elif check_func pthread_join -pthreads; then
4594         add_cflags -pthreads
4595         add_extralibs -pthreads
4596     elif check_func pthread_join -lpthreadGC2; then
4597         add_extralibs -lpthreadGC2
4598     elif check_lib pthread.h pthread_join -lpthread; then
4599         :
4600     elif ! check_func pthread_join; then
4601         disable pthreads
4602     fi
4603 fi
4604
4605 enabled pthreads &&
4606     check_builtin sem_timedwait semaphore.h "sem_t *s; sem_init(s,0,0); sem_timedwait(s,0); sem_destroy(s)"
4607
4608 disabled  zlib || check_lib  zlib.h      zlibVersion -lz   || disable  zlib
4609 disabled bzlib || check_lib bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4610
4611 check_lib math.h sin -lm && LIBM="-lm"
4612
4613 atan2f_args=2
4614 ldexpf_args=2
4615 powf_args=2
4616
4617 for func in $MATH_FUNCS; do
4618     eval check_mathfunc $func \${${func}_args:-1} $LIBM
4619 done
4620
4621 # these are off by default, so fail if requested and not available
4622 enabled avisynth          && { check_lib "avisynth/avisynth_c.h windows.h" LoadLibrary ||
4623                                check_lib "avxsynth/avxsynth_c.h dlfcn.h" dlopen -ldl   ||
4624                                die "ERROR: LoadLibrary/dlopen not found, or avisynth header not found"; }
4625 enabled cuda              && check_lib cuda.h cuInit -lcuda
4626 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4627 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4628 enabled libbs2b           && require_pkg_config libbs2b bs2b.h bs2b_open
4629 enabled libdcadec         && require libdcadec libdcadec/dca_context.h dcadec_context_create -ldcadec
4630 enabled libfaac           && require libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4631 enabled libfdk_aac        && require_pkg_config fdk-aac "fdk-aac/aacenc_lib.h" aacEncOpen
4632 enabled libfontconfig     && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4633 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h FT_FREETYPE_H" FT_Init_FreeType
4634 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4635                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4636                                done || die "ERROR: libgsm not found"; }
4637 enabled libhdcd           && require_pkg_config libhdcd "hdcd/hdcd_simple.h" hdcd_new
4638 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4639 enabled libkvazaar        && require_pkg_config "kvazaar >= 0.8.1" kvazaar.h kvz_api_get
4640 enabled libmfx            && require_pkg_config libmfx "mfx/mfxvideo.h" MFXInit
4641 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4642 enabled libnpp            && require libnpp npp.h nppGetLibVersion -lnppi -lnppc
4643 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4644 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4645 enabled libopencv         && require_pkg_config opencv opencv/cv.h cvCreateImageHeader
4646 enabled libopenh264       && require_pkg_config openh264 wels/codec_api.h WelsGetCodecVersion
4647 enabled libopenjpeg       && { check_lib openjpeg.h opj_version -lopenjpeg -DOPJ_STATIC ||
4648                                require_pkg_config libopenjpeg1 openjpeg.h opj_version -DOPJ_STATIC; }
4649 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4650 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4651 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4652 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4653 enabled libsnappy         && require libsnappy snappy-c.h snappy_compress -lsnappy
4654 enabled libspeex          && require_pkg_config speex speex/speex.h speex_decoder_init -lspeex
4655 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4656 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame
4657 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4658 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4659 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4660 enabled libvpx            && require_pkg_config "vpx >= 1.3.0" vpx/vpx_codec.h vpx_codec_version && {
4661     enabled libvpx_vp8_decoder && {
4662         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp8_dx ||
4663             disable libvpx_vp8_decoder;
4664     }
4665     enabled libvpx_vp8_encoder && {
4666         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp8_cx ||
4667             disable libvpx_vp8_encoder;
4668     }
4669     enabled libvpx_vp9_decoder && {
4670         check_pkg_config vpx "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_vp9_dx ||
4671             disable libvpx_vp9_decoder;
4672     }
4673     enabled libvpx_vp9_encoder && {
4674         check_pkg_config vpx "vpx/vpx_encoder.h vpx/vp8cx.h" vpx_codec_vp9_cx ||
4675             disable libvpx_vp9_encoder;
4676     }
4677     if disabled_all libvpx_vp8_decoder libvpx_vp9_decoder libvpx_vp8_encoder libvpx_vp9_encoder; then
4678         die "libvpx enabled but no supported decoders found"
4679     fi
4680 }
4681 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4682 enabled libwebp           && require_pkg_config libwebp webp/encode.h WebPGetEncoderVersion
4683 enabled libx264           && require_pkg_config x264 "stdint.h x264.h" x264_encoder_encode &&
4684                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4685                                die "ERROR: libx264 version must be >= 0.118."; } &&
4686                              { check_cpp_condition x264.h "X264_MPEG2" &&
4687                                enable libx262; }
4688 enabled libx265           && require_pkg_config x265 x265.h x265_api_get &&
4689                              { check_cpp_condition x265.h "X265_BUILD >= 57" ||
4690                                die "ERROR: libx265 version must be >= 57."; }
4691 enabled libxavs           && require libxavs "stdint.h xavs.h" xavs_encoder_encode -lxavs
4692 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4693 enabled mmal              && { check_lib interface/mmal/mmal.h mmal_port_connect -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ||
4694                                 { ! enabled cross_compile && {
4695                                     add_cflags -isystem/opt/vc/include/ -isystem/opt/vc/include/interface/vmcs_host/linux -isystem/opt/vc/include/interface/vcos/pthreads -fgnu89-inline ;
4696                                     add_extralibs -L/opt/vc/lib/ -lmmal_core -lmmal_util -lmmal_vc_client -lbcm_host ;
4697                                     check_lib interface/mmal/mmal.h mmal_port_connect ; }
4698                                 check_lib interface/mmal/mmal.h mmal_port_connect ; } ||
4699                                die "ERROR: mmal not found"; }
4700 enabled mmal && check_func_headers interface/mmal/mmal.h "MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS"
4701 enabled omx_rpi && enable omx
4702 enabled omx               && { check_header OMX_Core.h ||
4703                                 { ! enabled cross_compile && enabled omx_rpi && {
4704                                     add_cflags -isystem/opt/vc/include/IL ; }
4705                                 check_header OMX_Core.h ; } ||
4706                                die "ERROR: OpenMAX IL headers not found"; }
4707 enabled openssl           && { { check_pkg_config openssl openssl/ssl.h OPENSSL_init_ssl ||
4708                                  check_pkg_config openssl openssl/ssl.h SSL_library_init; } && {
4709                                add_cflags $openssl_cflags && add_extralibs $openssl_libs; }||
4710                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4711                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4712                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4713                                die "ERROR: openssl not found"; }
4714
4715 enabled gnutls            && check_lib gmp.h mpz_export -lgmp && enable gmp
4716
4717 # libdc1394 check
4718 if enabled libdc1394; then
4719     { require_pkg_config libdc1394-2 dc1394/dc1394.h dc1394_new &&
4720         enable libdc1394_2; } ||
4721     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4722         enable libdc1394_1; } ||
4723     die "ERROR: No version of libdc1394 found "
4724 fi
4725
4726 if enabled nvenc; then
4727     check_header nvEncodeAPI.h || die "ERROR: nvEncodeAPI.h not found."
4728     check_cpp_condition nvEncodeAPI.h "NVENCAPI_MAJOR_VERSION >= 6" ||
4729         die "ERROR: NVENC API version 5 or older is not supported"
4730 fi
4731
4732 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4733     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4734     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4735     enable sdl
4736 fi
4737
4738 ! disabled pod2man   && check_cmd pod2man --help     && enable pod2man   || disable pod2man
4739 ! disabled texi2html && check_cmd texi2html -version && enable texi2html || disable texi2html
4740
4741 check_header linux/fb.h
4742 check_header linux/videodev2.h
4743 check_struct linux/videodev2.h "struct v4l2_frmivalenum" discrete
4744
4745 check_header AVFoundation/AVFoundation.h &&
4746     check_objcflags -fobjc-arc &&
4747     add_extralibs -framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia ||
4748     disable AVFoundation_AVFoundation_h
4749
4750 check_header sys/videoio.h
4751
4752 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4753 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4754 # w32api 3.12 had it defined wrong
4755 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4756
4757 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4758 { check_header dev/bktr/ioctl_meteor.h &&
4759   check_header dev/bktr/ioctl_bt848.h; } ||
4760 { check_header machine/ioctl_meteor.h &&
4761   check_header machine/ioctl_bt848.h; } ||
4762 { check_header dev/video/meteor/ioctl_meteor.h &&
4763   check_header dev/video/bktr/ioctl_bt848.h; } ||
4764 check_header dev/ic/bt8xx.h
4765
4766 check_header sndio.h
4767 check_header sys/soundcard.h
4768 check_header soundcard.h
4769
4770 enabled_any alsa_indev alsa_outdev &&
4771     check_lib alsa/asoundlib.h snd_pcm_htimestamp -lasound
4772
4773 enabled jack_indev && check_lib jack/jack.h jack_client_open -ljack &&
4774     check_func jack_port_get_latency_range -ljack
4775
4776 enabled_any sndio_indev sndio_outdev && check_lib sndio.h sio_open -lsndio
4777
4778 if enabled libcdio; then
4779     check_lib "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4780     check_lib "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4781     die "ERROR: No usable libcdio/cdparanoia found"
4782 fi
4783
4784 if enabled libxcb; then
4785     check_pkg_config xcb-shape xcb/shape.h xcb_shape_rectangles || {
4786         enabled libxcb && die "ERROR: libxcb not found";
4787     } && enable libxcb
4788
4789     disabled libxcb_shm ||
4790         check_pkg_config xcb-shm xcb/shm.h xcb_shm_attach || {
4791             enabled libxcb_shm && die "ERROR: libxcb_shm not found";
4792         } && check_header sys/shm.h && enable libxcb_shm
4793
4794     disabled libxcb_xfixes ||
4795         check_pkg_config xcb-xfixes xcb/xfixes.h xcb_xfixes_get_cursor_image || {
4796             enabled libxcb_xfixes && die "ERROR: libxcb_xfixes not found";
4797         } && enable libxcb_xfixes
4798
4799     add_cflags "$xcb_shape_cflags $xcb_event_cflags $xcb_shm_cflags $xcb_xfixes_cflags"
4800     add_extralibs "$xcb_shape_libs $xcb_event_libs $xcb_shm_libs $xcb_xfixes_libs"
4801 fi
4802
4803 enabled vaapi && require vaapi va/va.h vaInitialize -lva
4804
4805 enabled vaapi &&
4806     check_code cc "va/va.h" "vaCreateSurfaces(0, 0, 0, 0, 0, 0, 0, 0)" ||
4807     disable vaapi
4808
4809 enabled vaapi &&
4810     check_lib "va/va.h va/va_drm.h" vaGetDisplayDRM -lva -lva-drm &&
4811     enable vaapi_drm
4812
4813 enabled vdpau &&
4814     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4815     disable vdpau
4816
4817 enabled_any vaapi vdpau && check_lib X11/Xlib.h XOpenDisplay -lX11 && enable xlib
4818
4819 enabled vaapi && enabled xlib &&
4820     check_lib "va/va.h va/va_x11.h" vaGetDisplay -lva -lva-x11 &&
4821     enable vaapi_x11
4822
4823 enabled vdpau && enabled xlib &&
4824     check_lib "vdpau/vdpau.h vdpau/vdpau_x11.h" vdp_device_create_x11 -lvdpau &&
4825     enable vdpau_x11
4826
4827 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4828
4829 # add some useful compiler flags if supported
4830 check_cflags -Wdeclaration-after-statement
4831 check_cflags -Wall
4832 check_cflags -Wdisabled-optimization
4833 check_cflags -Wpointer-arith
4834 check_cflags -Wredundant-decls
4835 check_cflags -Wwrite-strings
4836 check_cflags -Wtype-limits
4837 check_cflags -Wundef
4838 check_cflags -Wmissing-prototypes
4839 check_cflags -Wstrict-prototypes
4840 enabled extra_warnings && check_cflags -Winline