configure: Drop bogus xcb_event variables
[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) printf '%s ' $v ;; esac"
433     done
434 }
435
436 filter_out(){
437     pat=$1
438     shift
439     for v; do
440         eval "case $v in $pat) ;; *) printf '%s ' $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     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1675     sdl
1676     section_data_rel_ro
1677     threads
1678     vaapi_drm
1679     vaapi_x11
1680     vdpau_x11
1681 "
1682
1683 # options emitted with CONFIG_ prefix but not available on the command line
1684 CONFIG_EXTRA="
1685     aandcttables
1686     ac3dsp
1687     audio_frame_queue
1688     audiodsp
1689     blockdsp
1690     bswapdsp
1691     cabac
1692     dirac_parse
1693     dvprofile
1694     faandct
1695     faanidct
1696     fdctdsp
1697     flacdsp
1698     fmtconvert
1699     g722dsp
1700     gmp
1701     golomb
1702     gplv3
1703     h263dsp
1704     h264chroma
1705     h264dsp
1706     h264parse
1707     h264pred
1708     h264qpel
1709     hpeldsp
1710     huffman
1711     huffyuvdsp
1712     huffyuvencdsp
1713     idctdsp
1714     iirfilter
1715     imdct15
1716     intrax8
1717     iso_media
1718     ividsp
1719     jpegtables
1720     libx262
1721     lgplv3
1722     lpc
1723     lzf
1724     me_cmp
1725     mpeg_er
1726     mpegaudio
1727     mpegaudiodsp
1728     mpegvideo
1729     mpegvideoenc
1730     mss34dsp
1731     pixblockdsp
1732     qpeldsp
1733     qsv
1734     qsvdec
1735     qsvenc
1736     rangecoder
1737     riffdec
1738     riffenc
1739     rtpdec
1740     rtpenc_chain
1741     rv34dsp
1742     sinewin
1743     snappy
1744     srtp
1745     startcode
1746     texturedsp
1747     texturedspenc
1748     tpeldsp
1749     vaapi_encode
1750     vc1dsp
1751     videodsp
1752     vp3dsp
1753     vp56dsp
1754     vp8dsp
1755     wma_freqs
1756     wmv2dsp
1757 "
1758
1759 CMDLINE_SELECT="
1760     $ARCH_EXT_LIST
1761     $CONFIG_LIST
1762     $HAVE_LIST_CMDLINE
1763     $THREADS_LIST
1764     asm
1765     cross_compile
1766     debug
1767     extra_warnings
1768     logging
1769     lto
1770     optimizations
1771     rpath
1772 "
1773
1774 PATHS_LIST="
1775     bindir
1776     datadir
1777     docdir
1778     incdir
1779     libdir
1780     mandir
1781     prefix
1782     shlibdir
1783 "
1784
1785 CMDLINE_SET="
1786     $PATHS_LIST
1787     ar
1788     arch
1789     as
1790     build_suffix
1791     cc
1792     objcc
1793     cpu
1794     cross_prefix
1795     custom_allocator
1796     dep_cc
1797     env
1798     extra_version
1799     host_cc
1800     host_cflags
1801     host_ld
1802     host_ldflags
1803     host_libs
1804     host_os
1805     ld
1806     logfile
1807     malloc_prefix
1808     nm
1809     optflags
1810     pkg_config
1811     pkg_config_flags
1812     random_seed
1813     samples
1814     sysinclude
1815     sysroot
1816     target_exec
1817     target_os
1818     target_path
1819     target_samples
1820     toolchain
1821 "
1822
1823 CMDLINE_APPEND="
1824     extra_cflags
1825     extra_objcflags
1826     host_cppflags
1827 "
1828
1829 # code dependency declarations
1830
1831 # architecture extensions
1832
1833 armv5te_deps="arm"
1834 armv6_deps="arm"
1835 armv6t2_deps="arm"
1836 armv8_deps="aarch64"
1837 neon_deps_any="aarch64 arm"
1838 intrinsics_neon_deps="neon"
1839 vfp_deps_any="aarch64 arm"
1840 vfpv3_deps="vfp"
1841
1842 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1843
1844 altivec_deps="ppc"
1845 ppc4xx_deps="ppc"
1846 vsx_deps="altivec"
1847 power8_deps="vsx"
1848
1849 cpunop_deps="i686"
1850 x86_64_select="i686"
1851 x86_64_suggest="fast_cmov"
1852
1853 amd3dnow_deps="mmx"
1854 amd3dnowext_deps="amd3dnow"
1855 i686_deps="x86"
1856 mmx_deps="x86"
1857 mmxext_deps="mmx"
1858 sse_deps="mmxext"
1859 sse2_deps="sse"
1860 sse3_deps="sse2"
1861 ssse3_deps="sse3"
1862 sse4_deps="ssse3"
1863 sse42_deps="sse4"
1864 avx_deps="sse42"
1865 xop_deps="avx"
1866 fma3_deps="avx"
1867 fma4_deps="avx"
1868 avx2_deps="avx"
1869
1870 mmx_external_deps="yasm"
1871 mmx_inline_deps="inline_asm"
1872 mmx_suggest="mmx_external mmx_inline"
1873
1874 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1875     eval dep=\$${ext}_deps
1876     eval ${ext}_external_deps='"${dep}_external"'
1877     eval ${ext}_inline_deps='"${dep}_inline"'
1878     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1879 done
1880
1881 aligned_stack_if_any="aarch64 ppc x86"
1882 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1883 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1884 fast_unaligned_if_any="aarch64 ppc x86"
1885 simd_align_16_if_any="altivec neon sse"
1886 simd_align_32_if_any="avx"
1887
1888 # system capabilities
1889 symver_if_any="symver_asm_label symver_gnu_asm"
1890 valgrind_backtrace_deps="!optimizations valgrind_valgrind_h"
1891
1892 # threading support
1893 atomics_gcc_if="sync_val_compare_and_swap"
1894 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1895 atomics_win32_if="MemoryBarrier"
1896 atomics_native_if_any="$ATOMICS_LIST"
1897 w32threads_deps="atomics_native"
1898 threads_if_any="$THREADS_LIST"
1899
1900 # subsystems
1901 dct_select="rdft"
1902 dirac_parse_select="golomb"
1903 error_resilience_select="me_cmp"
1904 faandct_deps="faan fdctdsp"
1905 faanidct_deps="faan idctdsp"
1906 h264dsp_select="startcode"
1907 intrax8_select="blockdsp idctdsp"
1908 mdct_select="fft"
1909 rdft_select="fft"
1910 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1911 mpeg_er_select="error_resilience"
1912 mpegaudio_select="mpegaudiodsp"
1913 mpegaudiodsp_select="dct"
1914 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1915 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1916 vc1dsp_select="h264chroma qpeldsp startcode"
1917
1918 # decoders / encoders
1919 aac_decoder_select="imdct15 mdct sinewin"
1920 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1921 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1922 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1923 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1924 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1925 adpcm_g722_decoder_select="g722dsp"
1926 adpcm_g722_encoder_select="g722dsp"
1927 aic_decoder_select="golomb idctdsp"
1928 alac_encoder_select="lpc"
1929 als_decoder_select="bswapdsp"
1930 amrnb_decoder_select="lsp"
1931 amrwb_decoder_select="lsp"
1932 amv_decoder_select="sp5x_decoder"
1933 ape_decoder_select="bswapdsp"
1934 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1935 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1936 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1937 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1938 atrac1_decoder_select="mdct sinewin"
1939 atrac3_decoder_select="mdct"
1940 atrac3p_decoder_select="mdct sinewin"
1941 bink_decoder_select="blockdsp hpeldsp"
1942 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1943 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1944 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1945 cllc_decoder_select="bswapdsp"
1946 comfortnoise_encoder_select="lpc"
1947 cook_decoder_select="audiodsp mdct sinewin"
1948 cscd_decoder_select="lzo"
1949 cscd_decoder_suggest="zlib"
1950 dca_decoder_select="fmtconvert mdct"
1951 dds_decoder_select="texturedsp"
1952 dnxhd_decoder_select="blockdsp idctdsp"
1953 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1954 dvvideo_decoder_select="dvprofile idctdsp"
1955 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1956 dxa_decoder_deps="zlib"
1957 dxv_decoder_select="lzf texturedsp"
1958 eac3_decoder_select="ac3_decoder"
1959 eac3_encoder_select="ac3_encoder"
1960 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1961 eatgq_decoder_select="aandcttables idctdsp"
1962 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
1963 exr_decoder_deps="zlib"
1964 ffv1_decoder_select="golomb rangecoder"
1965 ffv1_encoder_select="rangecoder"
1966 ffvhuff_decoder_select="huffyuv_decoder"
1967 ffvhuff_encoder_select="huffyuv_encoder"
1968 fic_decoder_select="golomb"
1969 flac_decoder_select="flacdsp golomb"
1970 flac_encoder_select="bswapdsp flacdsp golomb lpc"
1971 flashsv_decoder_deps="zlib"
1972 flashsv_encoder_deps="zlib"
1973 flashsv2_decoder_deps="zlib"
1974 flv_decoder_select="h263_decoder"
1975 flv_encoder_select="h263_encoder"
1976 fourxm_decoder_select="blockdsp bswapdsp"
1977 fraps_decoder_select="bswapdsp huffman"
1978 g2m_decoder_deps="zlib"
1979 g2m_decoder_select="blockdsp idctdsp jpegtables"
1980 h261_decoder_select="mpeg_er mpegvideo"
1981 h261_encoder_select="aandcttables mpegvideoenc"
1982 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
1983 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1984 h263i_decoder_select="h263_decoder"
1985 h263p_encoder_select="h263_encoder"
1986 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
1987 h264_decoder_suggest="error_resilience"
1988 hap_decoder_select="snappy texturedsp"
1989 hap_encoder_deps="libsnappy"
1990 hap_encoder_select="texturedspenc"
1991 hevc_decoder_select="bswapdsp cabac golomb videodsp"
1992 huffyuv_decoder_select="bswapdsp huffyuvdsp"
1993 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
1994 iac_decoder_select="imc_decoder"
1995 imc_decoder_select="bswapdsp fft mdct sinewin"
1996 indeo3_decoder_select="hpeldsp"
1997 indeo4_decoder_select="ividsp"
1998 indeo5_decoder_select="ividsp"
1999 interplay_video_decoder_select="hpeldsp"
2000 jpegls_decoder_select="golomb mjpeg_decoder"
2001 jpegls_encoder_select="golomb"
2002 jv_decoder_select="blockdsp"
2003 lagarith_decoder_select="huffyuvdsp"
2004 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2005 loco_decoder_select="golomb"
2006 magicyuv_decoder_select="huffyuvdsp"
2007 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2008 metasound_decoder_select="lsp mdct sinewin"
2009 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2010 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2011 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2012 mjpegb_decoder_select="mjpeg_decoder"
2013 mlp_decoder_select="mlp_parser"
2014 motionpixels_decoder_select="bswapdsp"
2015 mp1_decoder_select="mpegaudio"
2016 mp1float_decoder_select="mpegaudio"
2017 mp2_decoder_select="mpegaudio"
2018 mp2float_decoder_select="mpegaudio"
2019 mp3_decoder_select="mpegaudio"
2020 mp3adu_decoder_select="mpegaudio"
2021 mp3adufloat_decoder_select="mpegaudio"
2022 mp3float_decoder_select="mpegaudio"
2023 mp3on4_decoder_select="mpegaudio"
2024 mp3on4float_decoder_select="mpegaudio"
2025 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2026 mpc8_decoder_select="mpegaudiodsp"
2027 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2028 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2029 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2030 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2031 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2032 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2033 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2034 mpeg4_encoder_select="h263_encoder"
2035 msa1_decoder_select="mss34dsp"
2036 msmpeg4v1_decoder_select="h263_decoder"
2037 msmpeg4v2_decoder_select="h263_decoder"
2038 msmpeg4v2_encoder_select="h263_encoder"
2039 msmpeg4v3_decoder_select="h263_decoder"
2040 msmpeg4v3_encoder_select="h263_encoder"
2041 mss2_decoder_select="error_resilience mpeg_er mpegvideo vc1_decoder"
2042 mts2_decoder_select="mss34dsp"
2043 mxpeg_decoder_select="mjpeg_decoder"
2044 nellymoser_decoder_select="mdct sinewin"
2045 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2046 nuv_decoder_select="idctdsp lzo"
2047 on2avc_decoder_select="mdct"
2048 opus_decoder_deps="avresample"
2049 opus_decoder_select="imdct15"
2050 png_decoder_deps="zlib"
2051 png_encoder_deps="zlib"
2052 png_encoder_select="huffyuvencdsp"
2053 prores_decoder_select="idctdsp"
2054 prores_encoder_select="fdctdsp"
2055 qcelp_decoder_select="lsp"
2056 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2057 ra_144_encoder_select="audio_frame_queue lpc"
2058 ralf_decoder_select="golomb"
2059 rscc_decoder_deps="zlib"
2060 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2061 rv10_encoder_select="h263_encoder"
2062 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2063 rv20_encoder_select="h263_encoder"
2064 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2065 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2066 screenpresso_decoder_deps="zlib"
2067 shorten_decoder_select="golomb"
2068 sipr_decoder_select="lsp"
2069 sp5x_decoder_select="mjpeg_decoder"
2070 svq1_decoder_select="hpeldsp"
2071 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2072 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2073 svq3_decoder_suggest="zlib"
2074 tak_decoder_select="audiodsp"
2075 tdsc_decoder_deps="zlib"
2076 tdsc_decoder_select="mjpeg_decoder"
2077 theora_decoder_select="vp3_decoder"
2078 thp_decoder_select="mjpeg_decoder"
2079 tiff_decoder_suggest="zlib"
2080 tiff_encoder_suggest="zlib"
2081 truehd_decoder_select="mlp_decoder"
2082 truemotion2_decoder_select="bswapdsp"
2083 truespeech_decoder_select="bswapdsp"
2084 tscc_decoder_deps="zlib"
2085 txd_decoder_select="texturedsp"
2086 twinvq_decoder_select="mdct lsp sinewin"
2087 utvideo_decoder_select="bswapdsp"
2088 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2089 vble_decoder_select="huffyuvdsp"
2090 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2091 vc1image_decoder_select="vc1_decoder"
2092 vorbis_decoder_select="mdct"
2093 vorbis_encoder_select="mdct"
2094 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2095 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2096 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2097 vp6a_decoder_select="vp6_decoder"
2098 vp6f_decoder_select="vp6_decoder"
2099 vp7_decoder_select="h264pred videodsp vp8dsp"
2100 vp8_decoder_select="h264pred videodsp vp8dsp"
2101 vp9_decoder_select="videodsp"
2102 webp_decoder_select="vp8_decoder"
2103 wmapro_decoder_select="mdct sinewin wma_freqs"
2104 wmav1_decoder_select="mdct sinewin wma_freqs"
2105 wmav1_encoder_select="mdct sinewin wma_freqs"
2106 wmav2_decoder_select="mdct sinewin wma_freqs"
2107 wmav2_encoder_select="mdct sinewin wma_freqs"
2108 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2109 wmv1_decoder_select="h263_decoder"
2110 wmv1_encoder_select="h263_encoder"
2111 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2112 wmv2_encoder_select="h263_encoder wmv2dsp"
2113 wmv3_decoder_select="vc1_decoder"
2114 wmv3image_decoder_select="wmv3_decoder"
2115 zerocodec_decoder_deps="zlib"
2116 zlib_decoder_deps="zlib"
2117 zlib_encoder_deps="zlib"
2118 zmbv_decoder_deps="zlib"
2119 zmbv_encoder_deps="zlib"
2120
2121 # hardware accelerators
2122 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2123 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2124 vaapi_deps="va_va_h"
2125 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2126 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2127 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2128
2129 h263_vaapi_hwaccel_deps="vaapi"
2130 h263_vaapi_hwaccel_select="h263_decoder"
2131 h264_d3d11va_hwaccel_deps="d3d11va"
2132 h264_d3d11va_hwaccel_select="h264_decoder"
2133 h264_dxva2_hwaccel_deps="dxva2"
2134 h264_dxva2_hwaccel_select="h264_decoder"
2135 h264_mmal_hwaccel_deps="mmal"
2136 h264_qsv_hwaccel_deps="libmfx"
2137 h264_vaapi_hwaccel_deps="vaapi"
2138 h264_vaapi_hwaccel_select="h264_decoder"
2139 h264_vda_hwaccel_deps="vda"
2140 h264_vda_hwaccel_select="h264_decoder"
2141 h264_vda_old_hwaccel_deps="vda"
2142 h264_vda_old_hwaccel_select="h264_decoder"
2143 h264_vdpau_hwaccel_deps="vdpau"
2144 h264_vdpau_hwaccel_select="h264_decoder"
2145 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2146 hevc_d3d11va_hwaccel_select="hevc_decoder"
2147 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2148 hevc_dxva2_hwaccel_select="hevc_decoder"
2149 hevc_qsv_hwaccel_deps="libmfx"
2150 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2151 hevc_vdpau_hwaccel_select="hevc_decoder"
2152 mpeg1_vdpau_hwaccel_deps="vdpau"
2153 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2154 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2155 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2156 mpeg2_dxva2_hwaccel_deps="dxva2"
2157 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2158 mpeg2_mmal_hwaccel_deps="mmal"
2159 mpeg2_qsv_hwaccel_deps="libmfx"
2160 mpeg2_vaapi_hwaccel_deps="vaapi"
2161 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2162 mpeg2_vdpau_hwaccel_deps="vdpau"
2163 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2164 mpeg4_vaapi_hwaccel_deps="vaapi"
2165 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2166 mpeg4_vdpau_hwaccel_deps="vdpau"
2167 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2168 vc1_d3d11va_hwaccel_deps="d3d11va"
2169 vc1_d3d11va_hwaccel_select="vc1_decoder"
2170 vc1_dxva2_hwaccel_deps="dxva2"
2171 vc1_dxva2_hwaccel_select="vc1_decoder"
2172 vc1_mmal_hwaccel_deps="mmal"
2173 vc1_qsv_hwaccel_deps="libmfx"
2174 vc1_vaapi_hwaccel_deps="vaapi"
2175 vc1_vaapi_hwaccel_select="vc1_decoder"
2176 vc1_vdpau_hwaccel_deps="vdpau"
2177 vc1_vdpau_hwaccel_select="vc1_decoder"
2178 vp8_qsv_hwaccel_deps="libmfx"
2179 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2180 vp8_vaapi_hwaccel_select="vp8_decoder"
2181 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2182 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2183 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2184 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2185
2186 # hardware-accelerated codecs
2187 nvenc_deps_any="dlopen LoadLibrary"
2188 nvenc_extralibs='$ldl'
2189 omx_deps="dlopen pthreads"
2190 omx_extralibs='$ldl'
2191 qsvdec_select="qsv"
2192 qsvenc_select="qsv"
2193 vaapi_encode_deps="vaapi"
2194
2195 hwupload_cuda_filter_deps="cuda"
2196 scale_npp_filter_deps="cuda libnpp"
2197
2198 h264_mmal_decoder_deps="mmal"
2199 h264_nvenc_encoder_deps="nvenc"
2200 h264_omx_encoder_deps="omx"
2201 h264_qsv_decoder_deps="libmfx"
2202 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2203 h264_qsv_encoder_deps="libmfx"
2204 h264_qsv_encoder_select="qsvenc"
2205 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2206 h264_vaapi_encoder_select="vaapi_encode golomb"
2207 hevc_nvenc_encoder_deps="nvenc"
2208 hevc_qsv_decoder_deps="libmfx"
2209 hevc_qsv_encoder_deps="libmfx"
2210 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2211 hevc_qsv_encoder_select="qsvenc"
2212 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2213 hevc_vaapi_encoder_select="vaapi_encode golomb"
2214 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2215 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2216 mpeg2_mmal_decoder_deps="mmal"
2217 mpeg2_qsv_decoder_deps="libmfx"
2218 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2219 mpeg2_qsv_encoder_deps="libmfx"
2220 mpeg2_qsv_encoder_select="qsvenc"
2221 mpeg4_omx_encoder_deps="omx"
2222 vc1_mmal_decoder_deps="mmal"
2223 vc1_qsv_decoder_deps="libmfx"
2224 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2225 vp8_qsv_decoder_deps="libmfx"
2226 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2227
2228 nvenc_h264_encoder_deps="nvenc"
2229 nvenc_hevc_encoder_deps="nvenc"
2230
2231 # parsers
2232 h264_parser_select="golomb h264dsp h264parse"
2233 hevc_parser_select="golomb"
2234 mpegvideo_parser_select="mpegvideo"
2235 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2236 vc1_parser_select="vc1dsp"
2237
2238 # bitstream_filters
2239 mjpeg2jpeg_bsf_select="jpegtables"
2240
2241 # external libraries
2242 libdcadec_decoder_deps="libdcadec"
2243 libfaac_encoder_deps="libfaac"
2244 libfaac_encoder_select="audio_frame_queue"
2245 libfdk_aac_decoder_deps="libfdk_aac"
2246 libfdk_aac_encoder_deps="libfdk_aac"
2247 libfdk_aac_encoder_select="audio_frame_queue"
2248 libgsm_decoder_deps="libgsm"
2249 libgsm_encoder_deps="libgsm"
2250 libgsm_ms_decoder_deps="libgsm"
2251 libgsm_ms_encoder_deps="libgsm"
2252 libilbc_decoder_deps="libilbc"
2253 libilbc_encoder_deps="libilbc"
2254 libkvazaar_encoder_deps="libkvazaar"
2255 libmp3lame_encoder_deps="libmp3lame"
2256 libmp3lame_encoder_select="audio_frame_queue"
2257 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2258 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2259 libopencore_amrnb_encoder_select="audio_frame_queue"
2260 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2261 libopenh264_decoder_deps="libopenh264"
2262 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2263 libopenh264_encoder_deps="libopenh264"
2264 libopenjpeg_decoder_deps="libopenjpeg"
2265 libopenjpeg_encoder_deps="libopenjpeg"
2266 libopus_decoder_deps="libopus"
2267 libopus_encoder_deps="libopus"
2268 libopus_encoder_select="audio_frame_queue"
2269 libschroedinger_decoder_deps="libschroedinger"
2270 libschroedinger_encoder_deps="libschroedinger"
2271 libspeex_decoder_deps="libspeex"
2272 libspeex_encoder_deps="libspeex"
2273 libspeex_encoder_select="audio_frame_queue"
2274 libtheora_encoder_deps="libtheora"
2275 libtwolame_encoder_deps="libtwolame"
2276 libvo_aacenc_encoder_deps="libvo_aacenc"
2277 libvo_aacenc_encoder_select="audio_frame_queue"
2278 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2279 libvorbis_encoder_deps="libvorbis"
2280 libvorbis_encoder_select="audio_frame_queue"
2281 libvpx_vp8_decoder_deps="libvpx"
2282 libvpx_vp8_encoder_deps="libvpx"
2283 libvpx_vp9_decoder_deps="libvpx"
2284 libvpx_vp9_encoder_deps="libvpx"
2285 libwavpack_encoder_deps="libwavpack"
2286 libwebp_encoder_deps="libwebp"
2287 libx262_encoder_deps="libx262"
2288 libx264_encoder_deps="libx264"
2289 libx265_encoder_deps="libx265"
2290 libxavs_encoder_deps="libxavs"
2291 libxvid_encoder_deps="libxvid mkstemp"
2292
2293 # demuxers / muxers
2294 ac3_demuxer_select="ac3_parser"
2295 asf_demuxer_select="riffdec"
2296 asf_muxer_select="riffenc"
2297 asf_stream_muxer_select="asf_muxer"
2298 avi_demuxer_select="iso_media riffdec"
2299 avi_muxer_select="riffenc"
2300 avisynth_demuxer_deps="avisynth"
2301 avisynth_demuxer_select="riffdec"
2302 caf_demuxer_select="iso_media riffdec"
2303 dash_muxer_select="mp4_muxer"
2304 dirac_demuxer_select="dirac_parser"
2305 dv_demuxer_select="dvprofile"
2306 dv_muxer_select="dvprofile"
2307 dxa_demuxer_select="riffdec"
2308 eac3_demuxer_select="ac3_parser"
2309 f4v_muxer_select="mov_muxer"
2310 flac_demuxer_select="flac_parser"
2311 hds_muxer_select="flv_muxer"
2312 hls_muxer_select="mpegts_muxer"
2313 ipod_muxer_select="mov_muxer"
2314 ismv_muxer_select="mov_muxer"
2315 matroska_audio_muxer_select="matroska_muxer"
2316 matroska_demuxer_select="iso_media riffdec"
2317 matroska_demuxer_suggest="bzlib lzo zlib"
2318 matroska_muxer_select="iso_media riffenc"
2319 mmf_muxer_select="riffenc"
2320 mov_demuxer_select="iso_media riffdec"
2321 mov_demuxer_suggest="zlib"
2322 mov_muxer_select="iso_media riffenc rtpenc_chain"
2323 mp3_demuxer_select="mpegaudio_parser"
2324 mp4_muxer_select="mov_muxer"
2325 mpegts_demuxer_select="iso_media"
2326 mpegts_muxer_select="adts_muxer latm_muxer"
2327 mpegtsraw_demuxer_select="mpegts_demuxer"
2328 mxf_d10_muxer_select="mxf_muxer"
2329 nut_muxer_select="riffenc"
2330 nuv_demuxer_select="riffdec"
2331 oga_muxer_select="ogg_muxer"
2332 ogg_demuxer_select="dirac_parse"
2333 opus_muxer_select="ogg_muxer"
2334 psp_muxer_select="mov_muxer"
2335 rtp_demuxer_select="sdp_demuxer"
2336 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2337 rtsp_demuxer_select="http_protocol rtpdec"
2338 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2339 sap_demuxer_select="sdp_demuxer"
2340 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2341 sdp_demuxer_select="rtpdec"
2342 smoothstreaming_muxer_select="ismv_muxer"
2343 spdif_muxer_select="aac_parser"
2344 spx_muxer_select="ogg_muxer"
2345 swf_demuxer_suggest="zlib"
2346 tak_demuxer_select="tak_parser"
2347 tg2_muxer_select="mov_muxer"
2348 tgp_muxer_select="mov_muxer"
2349 w64_demuxer_select="wav_demuxer"
2350 wav_demuxer_select="riffdec"
2351 wav_muxer_select="riffenc"
2352 webm_muxer_select="iso_media riffenc"
2353 webm_muxer_suggest="libopus_encoder libvorbis_encoder libvpx_vp8_encoder libvpx_vp9_encoder"
2354 wtv_demuxer_select="mpegts_demuxer riffdec"
2355 xmv_demuxer_select="riffdec"
2356 xwma_demuxer_select="riffdec"
2357
2358 # indevs / outdevs
2359 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2360 alsa_outdev_deps="alsa_asoundlib_h"
2361 avfoundation_indev_deps="AVFoundation_AVFoundation_h"
2362 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2363 dv1394_indev_deps="dv1394"
2364 dv1394_indev_select="dv_demuxer"
2365 fbdev_indev_deps="linux_fb_h"
2366 jack_indev_deps="jack_jack_h"
2367 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2368 libcdio_indev_deps="libcdio"
2369 libdc1394_indev_deps="libdc1394"
2370 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2371 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2372 pulse_indev_deps="libpulse"
2373 sndio_indev_deps="sndio_h"
2374 sndio_outdev_deps="sndio_h"
2375 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2376 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2377 vfwcap_indev_extralibs="-lavicap32"
2378 xcbgrab_indev_deps="libxcb"
2379
2380 # protocols
2381 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2382 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2383 ffrtmpcrypt_protocol_select="tcp_protocol"
2384 ffrtmphttp_protocol_deps="!librtmp_protocol"
2385 ffrtmphttp_protocol_select="http_protocol"
2386 gopher_protocol_select="network"
2387 http_protocol_select="tcp_protocol"
2388 httpproxy_protocol_select="tcp_protocol"
2389 https_protocol_select="tls_protocol"
2390 icecast_protocol_select="http_protocol"
2391 librtmp_protocol_deps="librtmp"
2392 librtmpe_protocol_deps="librtmp"
2393 librtmps_protocol_deps="librtmp"
2394 librtmpt_protocol_deps="librtmp"
2395 librtmpte_protocol_deps="librtmp"
2396 mmsh_protocol_select="http_protocol"
2397 mmst_protocol_select="network"
2398 rtmp_protocol_deps="!librtmp_protocol"
2399 rtmp_protocol_select="tcp_protocol"
2400 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2401 rtmps_protocol_deps="!librtmp_protocol"
2402 rtmps_protocol_select="tls_protocol"
2403 rtmpt_protocol_select="ffrtmphttp_protocol"
2404 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2405 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2406 rtp_protocol_select="udp_protocol"
2407 sctp_protocol_deps="struct_sctp_event_subscribe"
2408 sctp_protocol_select="network"
2409 srtp_protocol_select="rtp_protocol srtp"
2410 tcp_protocol_select="network"
2411 tls_gnutls_protocol_deps="gnutls"
2412 tls_gnutls_protocol_select="tcp_protocol"
2413 tls_openssl_protocol_deps="openssl !tls_gnutls_protocol"
2414 tls_openssl_protocol_select="tcp_protocol"
2415 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2416 udp_protocol_select="network"
2417 unix_protocol_deps="sys_un_h"
2418 unix_protocol_select="network"
2419
2420 # filters
2421 asyncts_filter_deps="avresample"
2422 blackframe_filter_deps="gpl"
2423 boxblur_filter_deps="gpl"
2424 bs2b_filter_deps="libbs2b"
2425 cropdetect_filter_deps="gpl"
2426 deinterlace_qsv_filter_deps="libmfx"
2427 delogo_filter_deps="gpl"
2428 drawtext_filter_deps="libfreetype"
2429 frei0r_filter_deps="frei0r dlopen"
2430 frei0r_filter_extralibs='$ldl'
2431 frei0r_src_filter_deps="frei0r dlopen"
2432 frei0r_src_filter_extralibs='$ldl'
2433 hdcd_filter_deps="libhdcd"
2434 hqdn3d_filter_deps="gpl"
2435 interlace_filter_deps="gpl"
2436 movie_filter_deps="avcodec avformat"
2437 ocv_filter_deps="libopencv"
2438 resample_filter_deps="avresample"
2439 scale_filter_deps="swscale"
2440 scale_qsv_filter_deps="libmfx"
2441 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2442
2443 # examples
2444 decode_audio_example_deps="avcodec avutil"
2445 decode_video_example_deps="avcodec avutil"
2446 encode_audio_example_deps="avcodec avutil"
2447 encode_video_example_deps="avcodec avutil"
2448 filter_audio_example_deps="avfilter avutil"
2449 metadata_example_deps="avformat avutil"
2450 output_example_deps="avcodec avformat avresample avutil swscale"
2451 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2452 transcode_aac_example_deps="avcodec avformat avresample"
2453
2454 # libraries, in linking order
2455 avcodec_deps="avutil"
2456 avdevice_deps="avformat avcodec avutil"
2457 avfilter_deps="avutil"
2458 avformat_deps="avcodec avutil"
2459 avresample_deps="avutil"
2460 swscale_deps="avutil"
2461
2462 # programs
2463 avconv_deps="avcodec avfilter avformat avresample swscale"
2464 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2465                fps_filter null_filter resample_filter scale_filter
2466                trim_filter"
2467 avplay_deps="avcodec avfilter avformat avresample sdl"
2468 avplay_libs='$sdl_libs'
2469 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2470 avprobe_deps="avcodec avformat"
2471
2472 # documentation
2473 pod2man_deps="doc"
2474 texi2html_deps="doc"
2475
2476 # default parameters
2477
2478 logfile="config.log"
2479
2480 # installation paths
2481 prefix_default="/usr/local"
2482 bindir_default='${prefix}/bin'
2483 datadir_default='${prefix}/share/avconv'
2484 docdir_default='${prefix}/share/doc/libav'
2485 incdir_default='${prefix}/include'
2486 libdir_default='${prefix}/lib'
2487 mandir_default='${prefix}/share/man'
2488 shlibdir_default="$libdir_default"
2489
2490 # toolchain
2491 ar_default="ar"
2492 cc_default="gcc"
2493 host_cc_default="gcc"
2494 ln_s="ln -s -f"
2495 nm_default="nm -g"
2496 objformat="elf"
2497 pkg_config_default=pkg-config
2498 ranlib="ranlib"
2499 strip="strip"
2500 version_script='--version-script'
2501 yasmexe="yasm"
2502
2503 # machine
2504 arch_default=$(uname -m)
2505 cpu="generic"
2506 intrinsics="none"
2507
2508 # OS
2509 target_os_default=$(tolower $(uname -s))
2510 host_os=$target_os_default
2511
2512 # configurable options
2513 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2514
2515 enable asm
2516 enable debug
2517 enable doc
2518 enable faan faandct faanidct
2519 enable optimizations
2520 enable safe_bitstream_reader
2521 enable static
2522 enable swscale_alpha
2523 enable valgrind_backtrace
2524
2525 # By default, enable only those hwaccels that have no external dependencies.
2526 enable d3d11va dxva2 vda vdpau
2527
2528 # build settings
2529 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2530 LIBPREF="lib"
2531 LIBSUF=".a"
2532 FULLNAME='$(NAME)$(BUILDSUF)'
2533 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2534 SLIBPREF="lib"
2535 SLIBSUF=".so"
2536 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2537 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2538 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2539 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2540 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2541 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2542 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2543
2544 asflags_filter=echo
2545 cflags_filter=echo
2546 ldflags_filter=echo
2547
2548 AS_C='-c'
2549 AS_O='-o $@'
2550 CC_C='-c'
2551 CC_E='-E -o $@'
2552 CC_O='-o $@'
2553 OBJCC_C='-c'
2554 OBJCC_E='-E -o $@'
2555 OBJCC_O='-o $@'
2556 LD_O='-o $@'
2557 LD_LIB='-l%'
2558 LD_PATH='-L'
2559 HOSTCC_C='-c'
2560 HOSTCC_E='-E -o $@'
2561 HOSTCC_O='-o $@'
2562 HOSTLD_O='-o $@'
2563
2564 host_libs='-lm'
2565 host_cflags_filter=echo
2566 host_ldflags_filter=echo
2567
2568 target_path='$(CURDIR)'
2569
2570 # since the object filename is not given with the -MM flag, the compiler
2571 # is only able to print the basename, and we must add the path ourselves
2572 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2573 DEPFLAGS='-MM'
2574
2575 # find source path
2576 if test -f configure; then
2577     source_path=.
2578 else
2579     source_path=$(cd $(dirname "$0"); pwd)
2580     echo "$source_path" | grep -q '[[:blank:]]' &&
2581         die "Out of tree builds are impossible with whitespace in source path."
2582     test -e "$source_path/config.h" &&
2583         die "Out of tree builds are impossible with config.h in source dir."
2584 fi
2585
2586 for v in "$@"; do
2587     r=${v#*=}
2588     l=${v%"$r"}
2589     r=$(sh_quote "$r")
2590     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2591 done
2592
2593 find_things(){
2594     thing=$1
2595     pattern=$2
2596     file=$source_path/$3
2597     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2598 }
2599
2600 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2601 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2602 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2603 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2604 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2605 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2606 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2607 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2608 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2609
2610 find_things_extern(){
2611     thing=$1
2612     pattern=$2
2613     file=$source_path/$3
2614     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2615 }
2616
2617 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2618 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2619
2620 ALL_COMPONENTS="
2621     $BSF_LIST
2622     $DECODER_LIST
2623     $DEMUXER_LIST
2624     $ENCODER_LIST
2625     $FILTER_LIST
2626     $HWACCEL_LIST
2627     $INDEV_LIST
2628     $MUXER_LIST
2629     $OUTDEV_LIST
2630     $PARSER_LIST
2631     $PROTOCOL_LIST
2632 "
2633
2634 for n in $COMPONENT_LIST; do
2635     v=$(toupper ${n%s})_LIST
2636     eval enable \$$v
2637     eval ${n}_if_any="\$$v"
2638 done
2639
2640 enable $ARCH_EXT_LIST
2641
2642 die_unknown(){
2643     echo "Unknown option \"$1\"."
2644     echo "See $0 --help for available options."
2645     exit 1
2646 }
2647
2648 print_3_columns() {
2649     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2650 }
2651
2652 show_list() {
2653     suffix=_$1
2654     shift
2655     echo $* | sed s/$suffix//g | print_3_columns
2656     exit 0
2657 }
2658
2659 rand_list(){
2660     IFS=', '
2661     set -- $*
2662     unset IFS
2663     for thing; do
2664         comp=${thing%:*}
2665         prob=${thing#$comp}
2666         prob=${prob#:}
2667         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2668         echo "prob ${prob:-0.5}"
2669         printf '%s\n' $comp
2670     done
2671 }
2672
2673 do_random(){
2674     action=$1
2675     shift
2676     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2677     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2678 }
2679
2680 for opt do
2681     optval="${opt#*=}"
2682     case "$opt" in
2683         --extra-ldflags=*)
2684             add_ldflags $optval
2685         ;;
2686         --extra-ldexeflags=*)
2687             add_ldexeflags $optval
2688         ;;
2689         --extra-libs=*)
2690             add_extralibs $optval
2691         ;;
2692         --disable-devices)
2693             disable $INDEV_LIST $OUTDEV_LIST
2694         ;;
2695         --enable-debug=*)
2696             debuglevel="$optval"
2697         ;;
2698         --disable-programs)
2699             disable $PROGRAM_LIST
2700         ;;
2701         --disable-everything)
2702             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2703         ;;
2704         --disable-all)
2705             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2706             disable $LIBRARY_LIST $PROGRAM_LIST doc
2707         ;;
2708         --enable-random|--disable-random)
2709             action=${opt%%-random}
2710             do_random ${action#--} $COMPONENT_LIST
2711         ;;
2712         --enable-random=*|--disable-random=*)
2713             action=${opt%%-random=*}
2714             do_random ${action#--} $optval
2715         ;;
2716         --enable-*=*|--disable-*=*)
2717             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2718             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2719             eval list=\$$(toupper $thing)_LIST
2720             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2721             $action $(filter "$name" $list)
2722         ;;
2723         --enable-avserver|--disable-avserver*)
2724             warn "avserver has been removed, the ${opt} option is only"\
2725                  "provided for compatibility and will be removed in the future"
2726         ;;
2727         --enable-?*|--disable-?*)
2728             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2729             if is_in $option $COMPONENT_LIST; then
2730                 test $action = disable && action=unset
2731                 eval $action \$$(toupper ${option%s})_LIST
2732             elif is_in $option $CMDLINE_SELECT; then
2733                 $action $option
2734             else
2735                 die_unknown $opt
2736             fi
2737         ;;
2738         --list-*)
2739             NAME="${opt#--list-}"
2740             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2741             NAME=${NAME%s}
2742             eval show_list $NAME \$$(toupper $NAME)_LIST
2743         ;;
2744         --help|-h) show_help
2745         ;;
2746         --quiet|-q) quiet=yes
2747         ;;
2748         *)
2749             optname="${opt%%=*}"
2750             optname="${optname#--}"
2751             optname=$(echo "$optname" | sed 's/-/_/g')
2752             if is_in $optname $CMDLINE_SET; then
2753                 eval $optname='$optval'
2754             elif is_in $optname $CMDLINE_APPEND; then
2755                 append $optname "$optval"
2756             else
2757                 die_unknown $opt
2758             fi
2759         ;;
2760     esac
2761 done
2762
2763 for e in $env; do
2764     eval "export $e"
2765 done
2766
2767 disabled logging && logfile=/dev/null
2768
2769 # Die early if licensing-related configure options are incompatible.
2770 die_license_disabled() {
2771     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2772 }
2773
2774 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2775 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2776 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2777
2778 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2779
2780 # Disable all the library-specific components if the library itself
2781 # is disabled, see AVCODEC_LIST and following _LIST variables.
2782
2783 disable_components(){
2784     disabled ${1} && disable $(
2785         eval components="\$$(toupper ${1})_COMPONENTS"
2786         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2787     )
2788 }
2789
2790 map 'disable_components $v' $LIBRARY_LIST
2791
2792 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2793 set >> $logfile
2794
2795 case "$toolchain" in
2796     *-asan)
2797         cc_default="${toolchain%-asan}"
2798         add_cflags  -fsanitize=address
2799         add_ldflags -fsanitize=address
2800     ;;
2801     *-msan)
2802         cc_default="${toolchain%-msan}"
2803         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2804         add_ldflags -fsanitize=memory
2805     ;;
2806     *-tsan)
2807         cc_default="${toolchain%-tsan}"
2808         add_cflags  -fsanitize=thread -pie
2809         add_ldflags -fsanitize=thread -pie
2810         case "$toolchain" in
2811             gcc-tsan)
2812                 add_cflags  -fPIC
2813                 add_ldflags -fPIC
2814                 ;;
2815         esac
2816     ;;
2817     *-usan)
2818         cc_default="${toolchain%-usan}"
2819         add_cflags  -fsanitize=undefined
2820         add_ldflags -fsanitize=undefined
2821         case "$toolchain" in
2822             clang-usan)
2823                 add_cflags -O1
2824                 ;;
2825         esac
2826     ;;
2827     valgrind-*)
2828         target_exec_default="valgrind"
2829         case "$toolchain" in
2830             valgrind-massif)
2831                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2832                 ;;
2833             valgrind-memcheck)
2834                 target_exec_args="--track-origins=yes --leak-check=full"
2835                 ;;
2836         esac
2837     ;;
2838     msvc)
2839         # Check whether the current MSVC version needs the C99 converter.
2840         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2841         # support enough of C99 to build libav. Default to the new
2842         # behaviour if the regexp was unable to match anything, since this
2843         # successfully parses the version number of existing supported
2844         # versions that require the converter (MSVC 2010 and 2012).
2845         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2846         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2847             cc_default="cl"
2848         else
2849             cc_default="c99wrap cl"
2850         fi
2851         ld_default="$source_path/compat/windows/mslink"
2852         nm_default="dumpbin -symbols"
2853         ar_default="lib"
2854         case "$arch" in
2855         arm*)
2856             as_default="armasm"
2857             ;;
2858         esac
2859         target_os_default="win32"
2860         # Use a relative path for TMPDIR. This makes sure all the
2861         # ffconf temp files are written with a relative path, avoiding
2862         # issues with msys/win32 path conversion for MSVC parameters
2863         # such as -Fo<file> or -out:<file>.
2864         TMPDIR=.
2865     ;;
2866     icl)
2867         cc_default="icl"
2868         ld_default="xilink"
2869         nm_default="dumpbin -symbols"
2870         ar_default="xilib"
2871         target_os_default="win32"
2872         TMPDIR=.
2873     ;;
2874     gcov)
2875         add_cflags  -fprofile-arcs -ftest-coverage
2876         add_ldflags -fprofile-arcs -ftest-coverage
2877     ;;
2878     llvm-cov)
2879         add_cflags -fprofile-arcs -ftest-coverage
2880         add_ldflags --coverage
2881     ;;
2882     hardened)
2883         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2884         add_cflags   -fno-strict-overflow -fstack-protector-all
2885         add_ldflags  -Wl,-z,relro -Wl,-z,now
2886     ;;
2887     ?*)
2888         die "Unknown toolchain $toolchain"
2889     ;;
2890 esac
2891
2892 test -n "$cross_prefix" && enable cross_compile
2893
2894 if enabled cross_compile; then
2895     test -n "$arch" && test -n "$target_os" ||
2896         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
2897 fi
2898
2899 ar_default="${cross_prefix}${ar_default}"
2900 cc_default="${cross_prefix}${cc_default}"
2901 occ_default="${cross_prefix}${occ_default}"
2902 nm_default="${cross_prefix}${nm_default}"
2903 pkg_config_default="${cross_prefix}${pkg_config_default}"
2904 ranlib="${cross_prefix}${ranlib}"
2905 strip="${cross_prefix}${strip}"
2906
2907 sysinclude_default="${sysroot}/usr/include"
2908
2909 set_default arch cc pkg_config sysinclude target_exec target_os
2910 enabled cross_compile || host_cc_default=$cc
2911 set_default host_cc
2912
2913 if ! $pkg_config --version >/dev/null 2>&1; then
2914     warn "$pkg_config not found, library detection may fail."
2915     pkg_config=false
2916 fi
2917
2918 exesuf() {
2919     case $1 in
2920         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2921     esac
2922 }
2923
2924 EXESUF=$(exesuf $target_os)
2925 HOSTEXESUF=$(exesuf $host_os)
2926
2927 # set temporary file name
2928 : ${TMPDIR:=$TEMPDIR}
2929 : ${TMPDIR:=$TMP}
2930 : ${TMPDIR:=/tmp}
2931
2932 if ! check_cmd mktemp -u XXXXXX; then
2933     # simple replacement for missing mktemp
2934     # NOT SAFE FOR GENERAL USE
2935     mktemp(){
2936         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2937     }
2938 fi
2939
2940 tmpfile(){
2941     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2942         (set -C; exec > $tmp) 2>/dev/null ||
2943         die "Unable to create temporary file in $TMPDIR."
2944     append TMPFILES $tmp
2945     eval $1=$tmp
2946 }
2947
2948 trap 'rm -f -- $TMPFILES' EXIT
2949
2950 tmpfile TMPASM .asm
2951 tmpfile TMPC   .c
2952 tmpfile TMPE   $EXESUF
2953 tmpfile TMPH   .h
2954 tmpfile TMPO   .o
2955 tmpfile TMPS   .S
2956 tmpfile TMPSH  .sh
2957 tmpfile TMPV   .ver
2958
2959 unset -f mktemp
2960
2961 chmod +x $TMPE
2962
2963 # make sure we can execute files in $TMPDIR
2964 cat > $TMPSH 2>> $logfile <<EOF
2965 #! /bin/sh
2966 EOF
2967 chmod +x $TMPSH >> $logfile 2>&1
2968 if ! $TMPSH >> $logfile 2>&1; then
2969     cat <<EOF
2970 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2971 variable to another directory and make sure that it is not mounted noexec.
2972 EOF
2973     die "Sanity test failed."
2974 fi
2975
2976 armasm_flags(){
2977     for flag; do
2978         case $flag in
2979             # Filter out MSVC cl.exe options from cflags that shouldn't
2980             # be passed to gas-preprocessor
2981             -M[TD]*)                                            ;;
2982             *)                  echo $flag                      ;;
2983         esac
2984    done
2985 }
2986
2987 ccc_flags(){
2988     for flag; do
2989         case $flag in
2990             -std=c99)           echo -c99                       ;;
2991             -mcpu=*)            echo -arch ${flag#*=}           ;;
2992             -mieee)             echo -ieee                      ;;
2993             -O*|-fast)          echo $flag                      ;;
2994             -fno-math-errno)    echo -assume nomath_errno       ;;
2995             -g)                 echo -g3                        ;;
2996             -Wall)              echo -msg_enable level2         ;;
2997             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2998             -Wl,*)              echo $flag                      ;;
2999             -f*|-W*)                                            ;;
3000             *)                  echo $flag                      ;;
3001         esac
3002    done
3003 }
3004
3005 cparser_flags(){
3006     for flag; do
3007         case $flag in
3008             -Wno-switch)             echo -Wno-switch-enum ;;
3009             -Wno-format-zero-length) ;;
3010             -Wdisabled-optimization) ;;
3011             -Wno-pointer-sign)       echo -Wno-other ;;
3012             *)                       echo $flag ;;
3013         esac
3014     done
3015 }
3016
3017 msvc_common_flags(){
3018     for flag; do
3019         case $flag in
3020             # In addition to specifying certain flags under the compiler
3021             # specific filters, they must be specified here as well or else the
3022             # generic catch all at the bottom will print the original flag.
3023             -Wall)                ;;
3024             -std=c99)             ;;
3025             # Common flags
3026             -fomit-frame-pointer) ;;
3027             -g)                   echo -Z7 ;;
3028             -fno-math-errno)      ;;
3029             -fno-common)          ;;
3030             -fno-signed-zeros)    ;;
3031             -fPIC)                ;;
3032             -mthumb)              ;;
3033             -march=*)             ;;
3034             -lz)                  echo zlib.lib ;;
3035             -lavicap32)           echo vfw32.lib user32.lib ;;
3036             -lx264)               echo libx264.lib ;;
3037             -l*)                  echo ${flag#-l}.lib ;;
3038             -L*)                  echo -libpath:${flag#-L} ;;
3039             *)                    echo $flag ;;
3040         esac
3041     done
3042 }
3043
3044 msvc_flags(){
3045     msvc_common_flags "$@"
3046     for flag; do
3047         case $flag in
3048             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3049                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3050                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3051                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3052         esac
3053     done
3054 }
3055
3056 icl_flags(){
3057     msvc_common_flags "$@"
3058     for flag; do
3059         case $flag in
3060             # Despite what Intel's documentation says -Wall, which is supported
3061             # on Windows, does enable remarks so disable them here.
3062             -Wall)                echo $flag -Qdiag-disable:remark ;;
3063             -std=c99)             echo -Qstd=c99 ;;
3064         esac
3065     done
3066 }
3067
3068 pgi_flags(){
3069     for flag; do
3070         case $flag in
3071             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3072             -fomit-frame-pointer) echo -Mnoframe ;;
3073             -g)                   echo -gopt ;;
3074             *)                    echo $flag ;;
3075         esac
3076     done
3077 }
3078
3079 suncc_flags(){
3080     for flag; do
3081         case $flag in
3082             -march=*|-mcpu=*)
3083                 case "${flag#*=}" in
3084                     native)                   echo -xtarget=native       ;;
3085                     v9|niagara)               echo -xarch=sparc          ;;
3086                     ultrasparc)               echo -xarch=sparcvis       ;;
3087                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3088                     i586|pentium)             echo -xchip=pentium        ;;
3089                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3090                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3091                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3092                     pentium4*)          echo -xtarget=pentium4           ;;
3093                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3094                     *-sse3)             echo -xarch=sse3                 ;;
3095                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3096                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3097                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3098                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3099                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3100                     k8|opteron|athlon64|athlon-fx)
3101                                                echo -xarch=sse2a         ;;
3102                     athlon*)                   echo -xarch=pentium_proa  ;;
3103                 esac
3104                 ;;
3105             -std=c99)             echo -xc99              ;;
3106             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3107             -fPIC)                echo -KPIC -xcode=pic32 ;;
3108             -W*,*)                echo $flag              ;;
3109             -f*-*|-W*|-mimpure-text)                      ;;
3110             -shared)              echo -G                 ;;
3111             *)                    echo $flag              ;;
3112         esac
3113     done
3114 }
3115
3116 tms470_flags(){
3117     for flag; do
3118         case $flag in
3119             -march=*|-mcpu=*)
3120                 case "${flag#*=}" in
3121                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3122                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3123                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3124                     armv6*|arm11*)          echo -mv=6   ;;
3125                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3126                                             echo -mv=5e  ;;
3127                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3128                 esac
3129                 ;;
3130             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3131             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3132             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3133             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3134             -msoft-float)   echo --float_support=vfplib       ;;
3135             -O[0-3]|-mf=*)  echo $flag                        ;;
3136             -g)             echo -g -mn                       ;;
3137             -pds=*)         echo $flag                        ;;
3138             -D*|-I*)        echo $flag                        ;;
3139             --gcc|--abi=*)  echo $flag                        ;;
3140             -me)            echo $flag                        ;;
3141         esac
3142     done
3143 }
3144
3145 probe_cc(){
3146     pfx=$1
3147     _cc=$2
3148
3149     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3150     unset _ld_o _ldflags _ld_lib _ld_path
3151     unset _depflags _DEPCMD _DEPFLAGS
3152     _flags_filter=echo
3153
3154     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3155         _type=llvm_gcc
3156         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3157         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3158         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3159         _cflags_speed='-O3'
3160         _cflags_size='-Os'
3161     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3162         _type=gcc
3163         gcc_version=$($_cc --version | head -n1)
3164         gcc_basever=$($_cc -dumpversion)
3165         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3166         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3167         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3168         if ! $_cc -dumpversion | grep -q '^2\.'; then
3169             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3170         fi
3171         _cflags_speed='-O3'
3172         _cflags_size='-Os'
3173     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3174         _type=icc
3175         _ident=$($_cc --version | head -n1)
3176         _depflags='-MMD'
3177         _cflags_speed='-O3'
3178         _cflags_size='-Os'
3179         _cflags_noopt='-O1'
3180     elif $_cc -v 2>&1 | grep -q xlc; then
3181         _type=xlc
3182         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3183         _cflags_speed='-O5'
3184         _cflags_size='-O5 -qcompact'
3185     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3186         _type=ccc
3187         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3188         _DEPFLAGS='-M'
3189         _cflags_speed='-fast'
3190         _cflags_size='-O1'
3191         _flags_filter=ccc_flags
3192     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3193         test -d "$sysroot" || die "No valid sysroot specified."
3194         _type=armcc
3195         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3196         armcc_conf="$PWD/armcc.conf"
3197         $_cc --arm_linux_configure                 \
3198              --arm_linux_config_file="$armcc_conf" \
3199              --configure_sysroot="$sysroot"        \
3200              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3201              die "Error creating armcc configuration file."
3202         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3203         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3204         as_default="${cross_prefix}gcc"
3205         _depflags='-MMD'
3206         _cflags_speed='-O3'
3207         _cflags_size='-Os'
3208     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3209         _type=tms470
3210         _ident=$($_cc -version | head -n1 | tr -s ' ')
3211         _flags='--gcc --abi=eabi -me'
3212         _cc_e='-ppl -fe=$@'
3213         _cc_o='-fe=$@'
3214         _depflags='-ppa -ppd=$(@:.o=.d)'
3215         _cflags_speed='-O3 -mf=5'
3216         _cflags_size='-O3 -mf=2'
3217         _flags_filter=tms470_flags
3218     elif $_cc -v 2>&1 | grep -q clang; then
3219         _type=clang
3220         _ident=$($_cc --version 2>/dev/null | head -n1)
3221         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3222         _cflags_speed='-O3'
3223         _cflags_size='-Os'
3224     elif $_cc -V 2>&1 | grep -q Sun; then
3225         _type=suncc
3226         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3227         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3228         _DEPFLAGS='-xM1 -xc99'
3229         _ldflags='-std=c99'
3230         _cflags_speed='-O5'
3231         _cflags_size='-O5 -xspace'
3232         _flags_filter=suncc_flags
3233     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3234         _type=pathscale
3235         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3236         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3237         _cflags_speed='-O2'
3238         _cflags_size='-Os'
3239         _flags_filter='filter_out -Wdisabled-optimization'
3240     elif $_cc -v 2>&1 | grep -q Open64; then
3241         _type=open64
3242         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3243         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3244         _cflags_speed='-O2'
3245         _cflags_size='-Os'
3246         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3247     elif $_cc -V 2>&1 | grep -q Portland; then
3248         _type=pgi
3249         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3250         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3251         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3252         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3253         _cflags_noopt="-O1"
3254         _flags_filter=pgi_flags
3255     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3256         _type=armasm
3257         _ident=$($_cc | head -n1)
3258         # 4509: "This form of conditional instruction is deprecated"
3259         _flags="-nologo -ignore 4509"
3260         _flags_filter=armasm_flags
3261     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3262         _type=msvc
3263         _ident=$($_cc 2>&1 | head -n1)
3264         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3265         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3266         _cflags_speed="-O2"
3267         _cflags_size="-O1"
3268         if $_cc -nologo- 2>&1 | grep -q Linker; then
3269             _ld_o='-out:$@'
3270         else
3271             _ld_o='-Fe$@'
3272         fi
3273         _cc_o='-Fo$@'
3274         _cc_e='-P -Fi$@'
3275         _flags_filter=msvc_flags
3276         _ld_lib='lib%.a'
3277         _ld_path='-libpath:'
3278         _flags='-nologo'
3279     elif $_cc 2>&1 | grep -q Intel; then
3280         _type=icl
3281         _ident=$($_cc 2>&1 | head -n1)
3282         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3283         # Not only is O3 broken on 13.x+ but it is slower on all previous
3284         # versions (tested) as well.
3285         _cflags_speed="-O2"
3286         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3287         if $_cc 2>&1 | grep -q Linker; then
3288             _ld_o='-out:$@'
3289         else
3290             _ld_o='-Fe$@'
3291         fi
3292         _cc_o='-Fo$@'
3293         _cc_e='-P'
3294         _flags_filter=icl_flags
3295         _ld_lib='lib%.a'
3296         _ld_path='-libpath:'
3297         # -Qdiag-error to make icl error when seeing certain unknown arguments
3298         _flags='-nologo -Qdiag-error:4044,10157'
3299         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3300         # with MSVC which enables it by default.
3301         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3302     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3303         # lld can emulate multiple different linkers; in ms link.exe mode,
3304         # the -? parameter gives the help output which contains an identifyable
3305         # string, while it gives an error in other modes.
3306         _type=lld-link
3307         # The link.exe mode doesn't have a switch for getting the version,
3308         # but we can force it back to gnu mode and get the version from there.
3309         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3310         _ld_o='-out:$@'
3311         _flags_filter=msvc_flags
3312         _ld_lib='lib%.a'
3313         _ld_path='-libpath:'
3314     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3315         _type=cparser
3316         _ident=$($_cc --version | head -n1)
3317         _depflags='-MMD'
3318         _cflags_speed='-O4'
3319         _cflags_size='-O2'
3320         _flags_filter=cparser_flags
3321     fi
3322
3323     eval ${pfx}_type=\$_type
3324     eval ${pfx}_ident=\$_ident
3325 }
3326
3327 set_ccvars(){
3328     eval ${1}_C=\${_cc_c-\${${1}_C}}
3329     eval ${1}_E=\${_cc_e-\${${1}_E}}
3330     eval ${1}_O=\${_cc_o-\${${1}_O}}
3331
3332     if [ -n "$_depflags" ]; then
3333         eval ${1}_DEPFLAGS=\$_depflags
3334     else
3335         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3336         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3337         eval DEP${1}FLAGS=\$_flags
3338     fi
3339 }
3340
3341 probe_cc cc "$cc"
3342 cflags_filter=$_flags_filter
3343 cflags_speed=$_cflags_speed
3344 cflags_size=$_cflags_size
3345 cflags_noopt=$_cflags_noopt
3346 add_cflags $_flags $_cflags
3347 cc_ldflags=$_ldflags
3348 set_ccvars CC
3349
3350 probe_cc hostcc "$host_cc"
3351 host_cflags_filter=$_flags_filter
3352 add_host_cflags  $_flags $_cflags
3353 set_ccvars HOSTCC
3354
3355 test -n "$cc_type" && enable $cc_type ||
3356     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3357
3358 : ${as_default:=$cc}
3359 : ${objcc_default:=$cc}
3360 : ${dep_cc_default:=$cc}
3361 : ${ld_default:=$cc}
3362 : ${host_ld_default:=$host_cc}
3363 set_default ar as objcc dep_cc ld host_ld
3364
3365 probe_cc as "$as"
3366 asflags_filter=$_flags_filter
3367 add_asflags $_flags $_cflags
3368 set_ccvars AS
3369
3370 probe_cc objcc "$objcc"
3371 objcflags_filter=$_flags_filter
3372 add_objcflags $_flags $_cflags
3373 set_ccvars OBJC
3374
3375 probe_cc ld "$ld"
3376 ldflags_filter=$_flags_filter
3377 add_ldflags $_flags $_ldflags
3378 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3379 LD_O=${_ld_o-$LD_O}
3380 LD_LIB=${_ld_lib-$LD_LIB}
3381 LD_PATH=${_ld_path-$LD_PATH}
3382
3383 probe_cc hostld "$host_ld"
3384 host_ldflags_filter=$_flags_filter
3385 add_host_ldflags $_flags $_ldflags
3386 HOSTLD_O=${_ld_o-$HOSTLD_O}
3387
3388 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3389     probe_cc depcc "$dep_cc"
3390     CCDEP=${_DEPCMD:-$DEPCMD}
3391     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3392     DEPCCFLAGS=$_flags
3393 fi
3394
3395 if $ar 2>&1 | grep -q Microsoft; then
3396     arflags="-nologo"
3397     ar_o='-out:$@'
3398 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3399     arflags="rq"
3400     ar_o='$@'
3401 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3402     arflags='-Xany -r -c'
3403     ar_o='$@'
3404 else
3405     arflags="rc"
3406     ar_o='$@'
3407 fi
3408
3409 add_cflags $extra_cflags
3410 add_objcflags $extra_objcflags
3411 add_asflags $extra_cflags
3412
3413 if test -n "$sysroot"; then
3414     case "$cc_type" in
3415         gcc|llvm_gcc|clang)
3416             add_cppflags --sysroot="$sysroot"
3417             add_ldflags --sysroot="$sysroot"
3418         ;;
3419         tms470)
3420             add_cppflags -I"$sysinclude"
3421             add_ldflags  --sysroot="$sysroot"
3422         ;;
3423     esac
3424 fi
3425
3426 if test "$cpu" = host; then
3427     enabled cross_compile &&
3428         die "--cpu=host makes no sense when cross-compiling."
3429
3430     case "$cc_type" in
3431         gcc|llvm_gcc)
3432             check_native(){
3433                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3434                 sed -n "/cc1.*$1=/{
3435                             s/.*$1=\\([^ ]*\\).*/\\1/
3436                             p
3437                             q
3438                         }" $TMPE
3439             }
3440             cpu=$(check_native -march || check_native -mcpu)
3441         ;;
3442     esac
3443
3444     test "${cpu:-host}" = host &&
3445         die "--cpu=host not supported with compiler $cc"
3446 fi
3447
3448 # Deal with common $arch aliases
3449 case "$arch" in
3450     aarch64|arm64)
3451         arch="aarch64"
3452     ;;
3453     arm*)
3454         arch="arm"
3455     ;;
3456     mips*|IP*)
3457         case "$arch" in
3458         *el)
3459             add_cppflags -EL
3460             add_ldflags -EL
3461         ;;
3462         *eb)
3463             add_cppflags -EB
3464             add_ldflags -EB
3465         ;;
3466         esac
3467         arch="mips"
3468     ;;
3469     parisc*|hppa*)
3470         arch="parisc"
3471     ;;
3472     "Power Macintosh"|ppc*|powerpc*)
3473         arch="ppc"
3474     ;;
3475     s390|s390x)
3476         arch="s390"
3477     ;;
3478     sh4|sh)
3479         arch="sh4"
3480     ;;
3481     sun4u|sparc*)
3482         arch="sparc"
3483     ;;
3484     tilegx|tile-gx)
3485         arch="tilegx"
3486     ;;
3487     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3488         arch="x86"
3489     ;;
3490 esac
3491
3492 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3493 enable $arch
3494
3495 # Add processor-specific flags
3496 if enabled aarch64; then
3497
3498     case $cpu in
3499         armv*)
3500             cpuflags="-march=$cpu"
3501         ;;
3502         *)
3503             cpuflags="-mcpu=$cpu"
3504         ;;
3505     esac
3506
3507 elif enabled alpha; then
3508
3509     cpuflags="-mcpu=$cpu"
3510
3511 elif enabled arm; then
3512
3513     check_arm_arch() {
3514         check_cpp_condition stddef.h \
3515             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3516             $cpuflags
3517     }
3518
3519     probe_arm_arch() {
3520         if   check_arm_arch 4;        then echo armv4
3521         elif check_arm_arch 4T;       then echo armv4t
3522         elif check_arm_arch 5;        then echo armv5
3523         elif check_arm_arch 5E;       then echo armv5e
3524         elif check_arm_arch 5T;       then echo armv5t
3525         elif check_arm_arch 5TE;      then echo armv5te
3526         elif check_arm_arch 5TEJ;     then echo armv5te
3527         elif check_arm_arch 6;        then echo armv6
3528         elif check_arm_arch 6J;       then echo armv6j
3529         elif check_arm_arch 6K;       then echo armv6k
3530         elif check_arm_arch 6Z;       then echo armv6z
3531         elif check_arm_arch 6ZK;      then echo armv6zk
3532         elif check_arm_arch 6T2;      then echo armv6t2
3533         elif check_arm_arch 7;        then echo armv7
3534         elif check_arm_arch 7A  7_A;  then echo armv7-a
3535         elif check_arm_arch 7S;       then echo armv7-a
3536         elif check_arm_arch 7R  7_R;  then echo armv7-r
3537         elif check_arm_arch 7M  7_M;  then echo armv7-m
3538         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3539         elif check_arm_arch 8A  8_A;  then echo armv8-a
3540         fi
3541     }
3542
3543     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3544
3545     case $cpu in
3546         armv*)
3547             cpuflags="-march=$cpu"
3548             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3549         ;;
3550         *)
3551             cpuflags="-mcpu=$cpu"
3552             case $cpu in
3553                 cortex-a*)                               subarch=armv7a  ;;
3554                 cortex-r*)                               subarch=armv7r  ;;
3555                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3556                 arm11*)                                  subarch=armv6   ;;
3557                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3558                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3559                 *)                             subarch=$(probe_arm_arch) ;;
3560             esac
3561         ;;
3562     esac
3563
3564     case "$subarch" in
3565         armv5t*)    enable fast_clz                ;;
3566         armv[6-8]*) enable fast_clz fast_unaligned ;;
3567     esac
3568
3569 elif enabled avr32; then
3570
3571     case $cpu in
3572         ap7[02]0[0-2])
3573             subarch="avr32_ap"
3574             cpuflags="-mpart=$cpu"
3575         ;;
3576         ap)
3577             subarch="avr32_ap"
3578             cpuflags="-march=$cpu"
3579         ;;
3580         uc3[ab]*)
3581             subarch="avr32_uc"
3582             cpuflags="-mcpu=$cpu"
3583         ;;
3584         uc)
3585             subarch="avr32_uc"
3586             cpuflags="-march=$cpu"
3587         ;;
3588     esac
3589
3590 elif enabled bfin; then
3591
3592     cpuflags="-mcpu=$cpu"
3593
3594 elif enabled mips; then
3595
3596     cpuflags="-march=$cpu"
3597
3598 elif enabled ppc; then
3599
3600     disable ldbrx
3601
3602     case $(tolower $cpu) in
3603         601|ppc601|powerpc601)
3604             cpuflags="-mcpu=601"
3605             disable altivec
3606         ;;
3607         603*|ppc603*|powerpc603*)
3608             cpuflags="-mcpu=603"
3609             disable altivec
3610         ;;
3611         604*|ppc604*|powerpc604*)
3612             cpuflags="-mcpu=604"
3613             disable altivec
3614         ;;
3615         g3|75*|ppc75*|powerpc75*)
3616             cpuflags="-mcpu=750"
3617             disable altivec
3618         ;;
3619         g4|745*|ppc745*|powerpc745*)
3620             cpuflags="-mcpu=7450"
3621             disable vsx
3622         ;;
3623         74*|ppc74*|powerpc74*)
3624             cpuflags="-mcpu=7400"
3625             disable vsx
3626         ;;
3627         g5|970|ppc970|powerpc970)
3628             cpuflags="-mcpu=970"
3629             disable vsx
3630         ;;
3631         power[3-6]*)
3632             cpuflags="-mcpu=$cpu"
3633             disable vsx
3634         ;;
3635         power[7-8]*)
3636             cpuflags="-mcpu=$cpu"
3637             enable ldbrx
3638         ;;
3639         cell)
3640             cpuflags="-mcpu=cell"
3641             enable ldbrx
3642             disable vsx
3643         ;;
3644         e500mc)
3645             cpuflags="-mcpu=e500mc"
3646             disable altivec
3647         ;;
3648         e500v2)
3649             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3650             disable altivec
3651             disable dcbzl
3652         ;;
3653         e500)
3654             cpuflags="-mcpu=8540 -mhard-float"
3655             disable altivec
3656             disable dcbzl
3657         ;;
3658     esac
3659
3660 elif enabled sparc; then
3661
3662     case $cpu in
3663         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3664             cpuflags="-mcpu=$cpu"
3665         ;;
3666         ultrasparc*|niagara[234])
3667             cpuflags="-mcpu=$cpu"
3668         ;;
3669     esac
3670
3671 elif enabled x86; then
3672
3673     case $cpu in
3674         i[345]86|pentium)
3675             cpuflags="-march=$cpu"
3676             disable i686
3677             disable mmx
3678         ;;
3679         # targets that do NOT support nopl and conditional mov (cmov)
3680         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3681             cpuflags="-march=$cpu"
3682             disable i686
3683         ;;
3684         # targets that do support nopl and conditional mov (cmov)
3685         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3686             cpuflags="-march=$cpu"
3687             enable i686
3688             enable fast_cmov
3689         ;;
3690         # targets that do support conditional mov but on which it's slow
3691         pentium4|pentium4m|prescott|nocona)
3692             cpuflags="-march=$cpu"
3693             enable i686
3694             disable fast_cmov
3695         ;;
3696     esac
3697
3698 fi
3699
3700 if [ "$cpu" != generic ]; then
3701     add_cflags  $cpuflags
3702     add_asflags $cpuflags
3703     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3704 fi
3705
3706 # compiler sanity check
3707 check_exec <<EOF
3708 int main(void){ return 0; }
3709 EOF
3710 if test "$?" != 0; then
3711     echo "$cc is unable to create an executable file."
3712     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3713         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3714         echo "Only do this if you know what cross compiling means."
3715     fi
3716     die "C compiler test failed."
3717 fi
3718
3719 add_cppflags -D_ISOC99_SOURCE
3720
3721 # some compilers silently accept -std=c11, so we also need to check that the
3722 # version macro is defined properly
3723 if test_cflags_cpp -std=c11 "__STDC_VERSION__ >= 201112L"; then
3724     add_cflags -std=c11
3725 else
3726     check_cflags -std=c99
3727 fi
3728
3729 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3730 #include <stdlib.h>
3731 EOF
3732 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3733 #include <stdlib.h>
3734 EOF
3735
3736 add_host_cppflags -D_ISOC99_SOURCE
3737 check_host_cflags -std=c99
3738 check_host_cflags -Wall
3739 check_host_cflags -O3
3740
3741 check_64bit(){
3742     arch32=$1
3743     arch64=$2
3744     expr=$3
3745     check_code cc "" "int test[2*($expr) - 1]" &&
3746         subarch=$arch64 || subarch=$arch32
3747 }
3748
3749 case "$arch" in
3750     aarch64|alpha|ia64)
3751         spic=$shared
3752     ;;
3753     mips)
3754         check_64bit mips mips64 '_MIPS_SIM > 1'
3755         spic=$shared
3756     ;;
3757     parisc)
3758         check_64bit parisc parisc64 'sizeof(void *) > 4'
3759         spic=$shared
3760     ;;
3761     ppc)
3762         check_64bit ppc ppc64 'sizeof(void *) > 4'
3763         spic=$shared
3764     ;;
3765     s390)
3766         check_64bit s390 s390x 'sizeof(void *) > 4'
3767         spic=$shared
3768     ;;
3769     sparc)
3770         check_64bit sparc sparc64 'sizeof(void *) > 4'
3771         spic=$shared
3772     ;;
3773     x86)
3774         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3775         if test "$subarch" = "x86_64"; then
3776             spic=$shared
3777         fi
3778     ;;
3779 esac
3780
3781 enable $subarch
3782 enabled spic && enable_weak pic
3783
3784 # OS specific
3785 case $target_os in
3786     aix)
3787         SHFLAGS=-shared
3788         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3789         enabled shared && add_ldflags -Wl,-brtl
3790         ;;
3791     android)
3792         disable symver
3793         enable section_data_rel_ro
3794         SLIB_INSTALL_NAME='$(SLIBNAME)'
3795         SLIB_INSTALL_LINKS=
3796         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3797         ;;
3798     haiku)
3799         prefix_default="/boot/common"
3800         network_extralibs="-lnetwork"
3801         host_libs=
3802         ;;
3803     sunos)
3804         SHFLAGS='-shared -Wl,-h,$$(@F)'
3805         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3806         network_extralibs="-lsocket -lnsl"
3807         # When using suncc to build, the Solaris linker will mark
3808         # an executable with each instruction set encountered by
3809         # the Solaris assembler.  As our libraries contain their own
3810         # guards for processor-specific code, instead suppress
3811         # generation of the HWCAPS ELF section on Solaris x86 only.
3812         enabled_all suncc x86 &&
3813             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3814             add_ldflags -Wl,-M,mapfile
3815         nm_default='nm -P -g'
3816         version_script='-M'
3817         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3818         ;;
3819     netbsd)
3820         disable symver
3821         oss_indev_extralibs="-lossaudio"
3822         oss_outdev_extralibs="-lossaudio"
3823         ;;
3824     openbsd|bitrig)
3825         disable symver
3826         SHFLAGS='-shared'
3827         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3828         SLIB_INSTALL_LINKS=
3829         oss_indev_extralibs="-lossaudio"
3830         oss_outdev_extralibs="-lossaudio"
3831         ;;
3832     dragonfly)
3833         disable symver
3834         ;;
3835     freebsd)
3836         ;;
3837     bsd/os)
3838         add_extralibs -lpoll -lgnugetopt
3839         ;;
3840     darwin)
3841         enabled ppc && add_asflags -force_cpusubtype_ALL
3842         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3843         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3844         add_ldflags -Wl,-dynamic,-search_paths_first
3845         SLIBSUF=".dylib"
3846         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3847         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3848         objformat="macho"
3849         enabled x86_64 && objformat="macho64"
3850         enabled_any pic shared ||
3851             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3852         check_header dispatch/dispatch.h &&
3853             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3854         ;;
3855     msys*)
3856         die "Native MSYS builds are discouraged, please use the MINGW environment."
3857         ;;
3858     mingw32*|mingw64*)
3859         if test $target_os = "mingw32ce"; then
3860             disable network
3861         else
3862             target_os=mingw32
3863         fi
3864         LIBTARGET=i386
3865         if enabled x86_64; then
3866             LIBTARGET="i386:x86-64"
3867         elif enabled arm; then
3868             LIBTARGET=arm-wince
3869         fi
3870         check_ldflags -Wl,--nxcompat
3871         check_ldflags -Wl,--dynamicbase
3872         shlibdir_default="$bindir_default"
3873         SLIBPREF=""
3874         SLIBSUF=".dll"
3875         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3876         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3877         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3878         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3879         SLIB_INSTALL_LINKS=
3880         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3881         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3882         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3883         objformat="win32"
3884         dlltool="${cross_prefix}dlltool"
3885         ranlib=:
3886         enable dos_paths
3887         ;;
3888     win32|win64)
3889         disable symver
3890         if enabled shared; then
3891             # Link to the import library instead of the normal static library
3892             # for shared libs.
3893             LD_LIB='%.lib'
3894             # Cannot build both shared and static libs with MSVC or icl.
3895             disable static
3896         fi
3897         shlibdir_default="$bindir_default"
3898         SLIBPREF=""
3899         SLIBSUF=".dll"
3900         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3901         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3902         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3903         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3904         SLIB_INSTALL_LINKS=
3905         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3906         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3907         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3908         objformat="win32"
3909         ranlib=:
3910         enable dos_paths
3911         ;;
3912     cygwin*)
3913         target_os=cygwin
3914         shlibdir_default="$bindir_default"
3915         SLIBPREF="cyg"
3916         SLIBSUF=".dll"
3917         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3918         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3919         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3920         SLIB_INSTALL_LINKS=
3921         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3922         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3923         objformat="win32"
3924         enable dos_paths
3925         ;;
3926     *-dos|freedos|opendos)
3927         network_extralibs="-lsocket"
3928         objformat="coff"
3929         enable dos_paths
3930         add_cppflags -U__STRICT_ANSI__
3931         ;;
3932     linux)
3933         enable dv1394
3934         enable section_data_rel_ro
3935         ;;
3936     irix*)
3937         target_os=irix
3938         ranlib="echo ignoring ranlib"
3939         ;;
3940     os/2*)
3941         ln_s="cp -f"
3942         objformat="aout"
3943         add_cppflags -D_GNU_SOURCE
3944         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3945         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3946         LIBSUF="_s.a"
3947         SLIBPREF=""
3948         SLIBSUF=".dll"
3949         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3950         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3951         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3952             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3953             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3954             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3955             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
3956         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3957             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3958         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3959         enable dos_paths
3960         ;;
3961     gnu/kfreebsd)
3962         add_cppflags -D_BSD_SOURCE
3963         ;;
3964     gnu)
3965         ;;
3966     qnx)
3967         add_cppflags -D_QNX_SOURCE
3968         network_extralibs="-lsocket"
3969         ;;
3970     symbian)
3971         SLIBSUF=".dll"
3972         enable dos_paths
3973         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3974         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3975         add_ldflags -Wl,--target1-abs,--no-undefined \
3976                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3977                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3978         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3979                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3980                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3981         ;;
3982     osf1)
3983         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3984         ;;
3985     minix)
3986         ;;
3987     none)
3988         ;;
3989     *)
3990         die "Unknown OS '$target_os'."
3991         ;;
3992 esac
3993
3994 # determine libc flavour
3995
3996 probe_libc(){
3997     pfx=$1
3998     pfx_no_=${pfx%_}
3999     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4000     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4001         eval ${pfx}libc_type=uclibc
4002         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4003     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4004         eval ${pfx}libc_type=glibc
4005         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4006     # MinGW headers can be installed on Cygwin, so check for newlib first.
4007     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4008         eval ${pfx}libc_type=newlib
4009         add_${pfx}cppflags -U__STRICT_ANSI__
4010     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4011     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4012         eval ${pfx}libc_type=mingw64
4013         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4014         eval test \$${pfx_no_}cc_type = "gcc" &&
4015             add_${pfx}cppflags -D__printf__=__gnu_printf__
4016     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4017          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4018         eval ${pfx}libc_type=mingw32
4019         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4020             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4021             die "ERROR: MinGW32 runtime version must be >= 3.15."
4022         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4023         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
4024             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4025         eval test \$${pfx_no_}cc_type = "gcc" &&
4026             add_${pfx}cppflags -D__printf__=__gnu_printf__
4027     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4028         eval ${pfx}libc_type=msvcrt
4029         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4030             if [ "$pfx" = host_ ]; then
4031                 add_host_cppflags -Dsnprintf=_snprintf
4032             else
4033                 add_compat strtod.o strtod=avpriv_strtod
4034                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4035                                              _snprintf=avpriv_snprintf  \
4036                                              vsnprintf=avpriv_vsnprintf
4037             fi
4038         fi
4039         add_${pfx}cppflags -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D_CRT_NONSTDC_NO_WARNINGS
4040         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
4041         # 0x601 by default unless something else is set by the user.
4042         # This can easily lead to us detecting functions only present
4043         # in such new versions and producing binaries requiring windows 7.0.
4044         # Therefore explicitly set the default to XP unless the user has
4045         # set something else on the command line.
4046         # Don't do this if WINAPI_FAMILY is set and is set to a non-desktop
4047         # family. For these cases, configure is free to use any functions
4048         # found in the SDK headers by default. (Alternatively, we could force
4049         # _WIN32_WINNT to 0x0602 in that case.)
4050         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
4051             { check_${pfx}cpp <<EOF && add_${pfx}cppflags -D_WIN32_WINNT=0x0502; }
4052 #ifdef WINAPI_FAMILY
4053 #include <winapifamily.h>
4054 #if !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP)
4055 #error not desktop
4056 #endif
4057 #endif
4058 EOF
4059         if [ "$pfx" = "" ]; then
4060             check_func strtoll || add_cflags -Dstrtoll=_strtoi64
4061         fi
4062     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
4063         eval ${pfx}libc_type=klibc
4064     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
4065         eval ${pfx}libc_type=bionic
4066     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
4067         eval ${pfx}libc_type=solaris
4068         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
4069     else
4070         eval ${pfx}libc_type=default
4071         add_${pfx}cppflags -D_DEFAULT_SOURCE
4072     fi
4073 }
4074
4075 probe_libc
4076 test -n "$libc_type" && enable libc_$libc_type
4077 probe_libc host_
4078 test -n "$host_libc_type" && enable host_libc_$host_libc_type
4079
4080 case $libc_type in
4081     bionic)
4082         add_compat strtod.o strtod=avpriv_strtod
4083         ;;
4084 esac
4085
4086 # hacks for compiler/libc/os combinations