rtsp: Move the pollfd setup out of the for loop
[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:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-outdevs           show all available output devices
77   --list-filters           show all available filters
78
79 Standard options:
80   --logfile=FILE           log tests and output to FILE [avbuild/config.log]
81   --disable-logging        do not log configure debug information
82   --prefix=PREFIX          install in PREFIX [$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-avxsynth          Linux version of AviSynth
192   --enable-bzlib             bzip2 compression [autodetect]
193   --enable-frei0r            video filtering plugins
194   --enable-gnutls            crypto
195   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
196   --enable-libcdio           audio CD input
197   --enable-libdc1394         IEEE 1394/Firewire camera input
198   --enable-libdcadec         DCA audio decoding
199   --enable-libfaac           AAC audio encoding
200   --enable-libfdk-aac        AAC audio encoding/decoding
201   --enable-libfontconfig     font configuration and management
202   --enable-libfreetype       font rendering
203   --enable-libgsm            GSM audio encoding/decoding
204   --enable-libhdcd           HDCD decoding filter
205   --enable-libilbc           ILBC audio encoding/decoding
206   --enable-libkvazaar        HEVC video encoding
207   --enable-libmp3lame        MP3 audio encoding
208   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
209   --enable-libopencore-amrwb AMR-WB audio decoding
210   --enable-libopencv         computer vision
211   --enable-libopenh264       H.264 video encoding/decoding
212   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
213   --enable-libopus           Opus audio encoding/decoding
214   --enable-libpulse          Pulseaudio sound server
215   --enable-librtmp           RTMP streaming
216   --enable-libschroedinger   Dirac video encoding/decoding
217   --enable-libsnappy         snappy compression
218   --enable-libspeex          Speex audio encoding/decoding
219   --enable-libtheora         Theora video encoding/decoding
220   --enable-libtwolame        MP2 audio encoding
221   --enable-libvo-aacenc      AAC audio encoding
222   --enable-libvo-amrwbenc    AMR-WB audio encoding
223   --enable-libvorbis         Vorbis audio encoding/decoding
224   --enable-libvpx            VP* video encoding/decoding
225   --enable-libwavpack        Wavpack audio encoding/decoding
226   --enable-libwebp           WebP image encoding/decoding
227   --enable-libx264           H.264 video encoding
228   --enable-libx265           HEVC video encoding
229   --enable-libxavs           Chinese AVS video encoding
230   --enable-libxcb            X window system protocol communication
231   --enable-libxcb-shm        X11 shm communication [auto]
232   --enable-libxcb-xfixes     X11 mouse rendering [auto]
233   --enable-libxvid           MPEG-4 ASP video encoding
234   --enable-openssl           crypto
235   --enable-zlib              compression [autodetect]
236
237   The following libraries provide various hardware acceleration features:
238   --enable-cuda    Nvidia CUDA (dynamically linked)
239   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
240   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
241   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
242   --enable-libnpp  Nvidia CUDA processing
243   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
244   --enable-nvenc   Nvidia video encoding
245   --enable-omx     OpenMAX IL
246   --enable-omx-rpi OpenMAX IL for Raspberry Pi
247   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
248   --enable-vda     Apple Video Decode Acceleration [auto]
249   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
250
251 Toolchain options:
252   --arch=ARCH              select architecture [$arch]
253   --cpu=CPU                select the minimum required CPU (affects
254                            instruction selection, may crash on older CPUs)
255   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
256   --enable-cross-compile   assume a cross-compiler is used
257   --sysroot=PATH           root of cross-build tree
258   --sysinclude=PATH        location of cross-build system headers
259   --target-os=OS           compiler targets OS [$target_os]
260   --target-exec=CMD        command to run executables on target
261   --target-path=DIR        path to view of build directory on target
262   --target-samples=DIR     path to samples directory on target
263   --toolchain=NAME         set tool defaults according to NAME
264   --nm=NM                  use nm tool
265   --ar=AR                  use archive tool AR [$ar_default]
266   --as=AS                  use assembler AS [$as_default]
267   --cc=CC                  use C compiler CC [$cc_default]
268   --objcc=OCC              use ObjC compiler OCC [$cc_default]
269   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
270   --ld=LD                  use linker LD
271   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
272   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
273   --host-cc=HOSTCC         use host C compiler HOSTCC
274   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
275   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
276   --host-ld=HOSTLD         use host linker HOSTLD
277   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
278   --host-libs=HLIBS        use libs HLIBS when linking for host
279   --host-os=OS             compiler host OS [$target_os]
280   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
281   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
282   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
283   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
284   --extra-libs=ELIBS       add ELIBS [$ELIBS]
285   --extra-version=STRING   version string suffix []
286   --optflags=OPTFLAGS      override optimization-related compiler flags
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   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
352                            in the name) of tests whose result is ignored
353
354 NOTE: Object files are built at the place where configure is launched.
355 EOF
356   exit 0
357 }
358
359 quotes='""'
360
361 log(){
362     echo "$@" >> $logfile
363 }
364
365 log_file(){
366     log BEGIN $1
367     i=1
368     while read line; do
369         printf '%5s   %s\n' "${i}" "${line}"
370         i=$(($i+1))
371     done < $1 >> $logfile
372     log END $1
373 }
374
375 echolog(){
376     log "$@"
377     echo "$@"
378 }
379
380 warn(){
381     log "WARNING: $*"
382     WARNINGS="${WARNINGS}WARNING: $*\n"
383 }
384
385 die(){
386     echolog "$@"
387     cat <<EOF
388
389 If you think configure made a mistake, make sure you are using the latest
390 version from Git.  If the latest version fails, report the problem to the
391 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
392 EOF
393     if disabled logging; then
394         cat <<EOF
395 Rerun configure with logging enabled (do not use --disable-logging), and
396 include the log this produces with your report.
397 EOF
398     else
399         cat <<EOF
400 Include the log file "$logfile" produced by configure as this will help
401 solving the problem.
402 EOF
403     fi
404     exit 1
405 }
406
407 # Avoid locale weirdness, besides we really just want to translate ASCII.
408 toupper(){
409     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
410 }
411
412 tolower(){
413     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
414 }
415
416 c_escape(){
417     echo "$*" | sed 's/["\\]/\\\0/g'
418 }
419
420 sh_quote(){
421     v=$(echo "$1" | sed "s/'/'\\\\''/g")
422     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
423     echo "$v"
424 }
425
426 cleanws(){
427     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
428 }
429
430 filter(){
431     pat=$1
432     shift
433     for v; do
434         eval "case $v in $pat) printf '%s ' $v ;; esac"
435     done
436 }
437
438 filter_out(){
439     pat=$1
440     shift
441     for v; do
442         eval "case $v in $pat) ;; *) printf '%s ' $v ;; esac"
443     done
444 }
445
446 map(){
447     m=$1
448     shift
449     for v; do eval $m; done
450 }
451
452 add_suffix(){
453     suffix=$1
454     shift
455     for v; do echo ${v}${suffix}; done
456 }
457
458 set_all(){
459     value=$1
460     shift
461     for var in $*; do
462         eval $var=$value
463     done
464 }
465
466 set_weak(){
467     value=$1
468     shift
469     for var; do
470         eval : \${$var:=$value}
471     done
472 }
473
474 sanitize_var_name(){
475     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
476 }
477
478 set_safe(){
479     var=$1
480     shift
481     eval $(sanitize_var_name "$var")='$*'
482 }
483
484 get_safe(){
485     eval echo \$$(sanitize_var_name "$1")
486 }
487
488 pushvar(){
489     for pvar in $*; do
490         eval level=\${${pvar}_level:=0}
491         eval ${pvar}_${level}="\$$pvar"
492         eval ${pvar}_level=$(($level+1))
493     done
494 }
495
496 popvar(){
497     for pvar in $*; do
498         eval level=\${${pvar}_level:-0}
499         test $level = 0 && continue
500         eval level=$(($level-1))
501         eval $pvar="\${${pvar}_${level}}"
502         eval ${pvar}_level=$level
503         eval unset ${pvar}_${level}
504     done
505 }
506
507 enable(){
508     set_all yes $*
509 }
510
511 disable(){
512     set_all no $*
513 }
514
515 enable_weak(){
516     set_weak yes $*
517 }
518
519 disable_weak(){
520     set_weak no $*
521 }
522
523 enable_safe(){
524     for var; do
525         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
526     done
527 }
528
529 disable_safe(){
530     for var; do
531         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
532     done
533 }
534
535 do_enable_deep(){
536     for var; do
537         enabled $var && continue
538         eval sel="\$${var}_select"
539         eval sgs="\$${var}_suggest"
540         pushvar var sgs
541         enable_deep $sel
542         popvar sgs
543         enable_deep_weak $sgs
544         popvar var
545     done
546 }
547
548 enable_deep(){
549     do_enable_deep $*
550     enable $*
551 }
552
553 enable_deep_weak(){
554     for var; do
555         disabled $var && continue
556         pushvar var
557         do_enable_deep $var
558         popvar var
559         enable_weak $var
560     done
561 }
562
563 enabled(){
564     test "${1#!}" = "$1" && op== || op=!=
565     eval test "x\$${1#!}" $op "xyes"
566 }
567
568 disabled(){
569     test "${1#!}" = "$1" && op== || op=!=
570     eval test "x\$${1#!}" $op "xno"
571 }
572
573 enabled_all(){
574     for opt; do
575         enabled $opt || return 1
576     done
577 }
578
579 disabled_all(){
580     for opt; do
581         disabled $opt || return 1
582     done
583 }
584
585 enabled_any(){
586     for opt; do
587         enabled $opt && return 0
588     done
589 }
590
591 disabled_any(){
592     for opt; do
593         disabled $opt && return 0
594     done
595     return 1
596 }
597
598 set_default(){
599     for opt; do
600         eval : \${$opt:=\$${opt}_default}
601     done
602 }
603
604 is_in(){
605     value=$1
606     shift
607     for var in $*; do
608         [ $var = $value ] && return 0
609     done
610     return 1
611 }
612
613 do_check_deps(){
614     for cfg; do
615         enabled ${cfg}_checking && die "Circular dependency for $cfg."
616         disabled ${cfg}_checking && continue
617         enable ${cfg}_checking
618         append allopts $cfg
619
620         eval dep_all="\$${cfg}_deps"
621         eval dep_any="\$${cfg}_deps_any"
622         eval dep_con="\$${cfg}_conflict"
623         eval dep_sel="\$${cfg}_select"
624         eval dep_sgs="\$${cfg}_suggest"
625         eval dep_ifa="\$${cfg}_if"
626         eval dep_ifn="\$${cfg}_if_any"
627
628         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
629         do_check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
630         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
631
632         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
633         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
634         enabled_all  $dep_all || disable $cfg
635         enabled_any  $dep_any || disable $cfg
636         disabled_all $dep_con || disable $cfg
637         disabled_any $dep_sel && disable $cfg
638
639         if enabled $cfg; then
640             enable_deep $dep_sel
641             enable_deep_weak $dep_sgs
642         fi
643
644         disable ${cfg}_checking
645     done
646 }
647
648 check_deps(){
649     unset allopts
650
651     do_check_deps "$@"
652
653     for cfg in $allopts; do
654         enabled $cfg || continue
655         eval dep_extralibs="\$${cfg}_extralibs"
656         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
657     done
658 }
659
660 print_config(){
661     pfx=$1
662     files=$2
663     shift 2
664     map 'eval echo "$v \${$v:-no}"' "$@" |
665     awk "BEGIN { split(\"$files\", files) }
666         {
667             c = \"$pfx\" toupper(\$1);
668             v = \$2;
669             sub(/yes/, 1, v);
670             sub(/no/,  0, v);
671             for (f in files) {
672                 file = files[f];
673                 if (file ~ /\\.h\$/) {
674                     printf(\"#define %s %d\\n\", c, v) >>file;
675                 } else if (file ~ /\\.asm\$/) {
676                     printf(\"%%define %s %d\\n\", c, v) >>file;
677                 } else if (file ~ /\\.mak\$/) {
678                     n = -v ? \"\" : \"!\";
679                     printf(\"%s%s=yes\\n\", n, c) >>file;
680                 }
681             }
682         }"
683 }
684
685 print_enabled(){
686     suf=$1
687     shift
688     for v; do
689         enabled $v && printf "%s\n" ${v%$suf}
690     done
691 }
692
693 append(){
694     var=$1
695     shift
696     eval "$var=\"\$$var $*\""
697 }
698
699 prepend(){
700     var=$1
701     shift
702     eval "$var=\"$* \$$var\""
703 }
704
705 unique(){
706     var=$1
707     uniq_list=""
708     for tok in $(eval echo \$$var); do
709         uniq_list="$(filter_out $tok $uniq_list) $tok"
710     done
711     eval "$var=\"${uniq_list}\""
712 }
713
714 add_cppflags(){
715     append CPPFLAGS "$@"
716 }
717
718 add_cflags(){
719     append CFLAGS $($cflags_filter "$@")
720 }
721
722 add_cflags_headers(){
723     append CFLAGS_HEADERS $($cflags_filter "$@")
724 }
725
726 add_asflags(){
727     append ASFLAGS $($asflags_filter "$@")
728 }
729
730 add_objcflags(){
731     append OBJCFLAGS $($objcflags_filter "$@")
732 }
733
734 add_ldflags(){
735     append LDFLAGS $($ldflags_filter "$@")
736 }
737
738 add_ldexeflags(){
739     append LDEXEFLAGS $($ldflags_filter "$@")
740 }
741
742 add_stripflags(){
743     append STRIPFLAGS "$@"
744 }
745
746 add_extralibs(){
747     prepend extralibs $($ldflags_filter "$@")
748 }
749
750 add_host_cppflags(){
751     append host_cppflags "$@"
752 }
753
754 add_host_cflags(){
755     append host_cflags $($host_cflags_filter "$@")
756 }
757
758 add_host_ldflags(){
759     append host_ldflags $($host_ldflags_filter "$@")
760 }
761
762 add_compat(){
763     append compat_objs $1
764     shift
765     map 'add_cppflags -D$v' "$@"
766 }
767
768 check_cmd(){
769     log "$@"
770     "$@" >> $logfile 2>&1
771 }
772
773 cc_o(){
774     eval printf '%s\\n' $CC_O
775 }
776
777 cc_e(){
778     eval printf '%s\\n' $CC_E
779 }
780
781 check_cc(){
782     log check_cc "$@"
783     cat > $TMPC
784     log_file $TMPC
785     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
786 }
787
788 check_objcc(){
789     log check_objcc "$@"
790     cat > $TMPC
791     log_file $TMPC
792     check_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
793 }
794
795 check_cpp(){
796     log check_cpp "$@"
797     cat > $TMPC
798     log_file $TMPC
799     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
800 }
801
802 as_o(){
803     eval printf '%s\\n' $AS_O
804 }
805
806 check_as(){
807     log check_as "$@"
808     cat > $TMPS
809     log_file $TMPS
810     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
811 }
812
813 check_inline_asm(){
814     log check_inline_asm "$@"
815     name="$1"
816     code="$2"
817     shift 2
818     disable $name
819     check_cc "$@" <<EOF && enable $name
820 void foo(void){ __asm__ volatile($code); }
821 EOF
822 }
823
824 check_insn(){
825     log check_insn "$@"
826     check_inline_asm ${1}_inline "\"$2\""
827     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
828 }
829
830 check_yasm(){
831     log check_yasm "$@"
832     echo "$1" > $TMPS
833     log_file $TMPS
834     shift 1
835     check_cmd $yasmexe $YASMFLAGS "$@" -o $TMPO $TMPS
836 }
837
838 ld_o(){
839     eval printf '%s\\n' $LD_O
840 }
841
842 check_ld(){
843     log check_ld "$@"
844     flags=$(filter_out '-l*' "$@")
845     libs=$(filter '-l*' "$@")
846     check_cc $($cflags_filter $flags) || return
847     flags=$($ldflags_filter $flags)
848     libs=$($ldflags_filter $libs)
849     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
850 }
851
852 print_include(){
853     hdr=$1
854     test "${hdr%.h}" = "${hdr}" &&
855         echo "#include $hdr"    ||
856         echo "#include <$hdr>"
857 }
858
859 check_code(){
860     log check_code "$@"
861     check=$1
862     headers=$2
863     code=$3
864     shift 3
865     {
866         for hdr in $headers; do
867             print_include $hdr
868         done
869         echo "int main(void) { $code; return 0; }"
870     } | check_$check "$@"
871 }
872
873 check_cppflags(){
874     log check_cppflags "$@"
875     check_cpp "$@" <<EOF && append CPPFLAGS "$@"
876 #include <stdlib.h>;
877 EOF
878 }
879
880 test_cflags(){
881     log test_cflags "$@"
882     set -- $($cflags_filter "$@")
883     check_cc "$@" <<EOF
884 int x;
885 EOF
886 }
887
888 check_cflags(){
889     log check_cflags "$@"
890     test_cflags "$@" && add_cflags "$@"
891 }
892
893 test_objcflags(){
894     log test_objcflags "$@"
895     set -- $($objcflags_filter "$@")
896     check_objcc "$@" <<EOF
897 int x;
898 EOF
899 }
900
901 check_objcflags(){
902     log check_objcflags "$@"
903     test_objcflags "$@" && add_objcflags "$@"
904 }
905
906 test_ldflags(){
907     log test_ldflags "$@"
908     check_ld "$@" <<EOF
909 int main(void){ return 0; }
910 EOF
911 }
912
913 check_ldflags(){
914     log check_ldflags "$@"
915     test_ldflags "$@" && add_ldflags "$@"
916 }
917
918 test_stripflags(){
919     log test_stripflags "$@"
920     # call check_cc to get a fresh TMPO
921     check_cc <<EOF
922 int main(void) { return 0; }
923 EOF
924     check_cmd $strip $STRIPFLAGS "$@" $TMPO
925 }
926
927 check_stripflags(){
928     log check_stripflags "$@"
929     test_stripflags "$@" && add_stripflags "$@"
930 }
931
932 check_header(){
933     log check_header "$@"
934     header=$1
935     shift
936     disable_safe $header
937     check_cpp "$@" <<EOF && enable_safe $header
938 #include <$header>
939 int x;
940 EOF
941 }
942
943 check_func(){
944     log check_func "$@"
945     func=$1
946     shift
947     disable $func
948     check_ld "$@" <<EOF && enable $func
949 extern int $func();
950 int main(void){ $func(); }
951 EOF
952 }
953
954 check_mathfunc(){
955     log check_mathfunc "$@"
956     func=$1
957     narg=$2
958     shift 2
959     test $narg = 2 && args="f, g" || args="f"
960     disable $func
961     check_ld "$@" <<EOF && enable $func
962 #include <math.h>
963 float foo(float f, float g) { return $func($args); }
964 int main(void){ return 0; }
965 EOF
966 }
967
968 check_func_headers(){
969     log check_func_headers "$@"
970     headers=$1
971     funcs=$2
972     shift 2
973     {
974         for hdr in $headers; do
975             print_include $hdr
976         done
977         for func in $funcs; do
978             echo "long check_$func(void) { return (long) $func; }"
979         done
980         echo "int main(void) { return 0; }"
981     } | check_ld "$@" && enable $funcs && enable_safe $headers
982 }
983
984 check_cpp_condition(){
985     log check_cpp_condition "$@"
986     header=$1
987     condition=$2
988     shift 2
989     check_cpp "$@" <<EOF
990 #include <$header>
991 #if !($condition)
992 #error "unsatisfied condition: $condition"
993 #endif
994 EOF
995 }
996
997 test_cflags_cpp(){
998     log test_cflags_cpp "$@"
999     flags=$1
1000     condition=$2
1001     shift 2
1002     set -- $($cflags_filter "$flags")
1003     check_cpp "$@" <<EOF
1004 #if !($condition)
1005 #error "unsatisfied condition: $condition"
1006 #endif
1007 EOF
1008 }
1009
1010 check_lib(){
1011     log check_lib "$@"
1012     name="$1"
1013     headers="$2"
1014     funcs="$3"
1015     shift 3
1016     disable $name
1017     check_func_headers "$headers" "$funcs" "$@" &&
1018         enable $name && add_extralibs "$@"
1019 }
1020
1021 check_pkg_config(){
1022     log check_pkg_config "$@"
1023     name="$1"
1024     pkg_version="$2"
1025     pkg="${2%% *}"
1026     headers="$3"
1027     funcs="$4"
1028     shift 4
1029     disable $name
1030     check_cmd $pkg_config --exists --print-errors $pkg_version || return
1031     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1032     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1033     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1034         enable $name &&
1035         add_cflags    "$pkg_cflags" &&
1036         add_extralibs "$pkg_libs"
1037 }
1038
1039 check_exec(){
1040     check_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1041 }
1042
1043 check_exec_crash(){
1044     log check_exec_crash "$@"
1045     code=$(cat)
1046
1047     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1048     # are safe but may not be available everywhere.  Thus we use
1049     # raise(SIGTERM) instead.  The check is run in a subshell so we
1050     # can redirect the "Terminated" message from the shell.  SIGBUS
1051     # is not defined by standard C so it is used conditionally.
1052
1053     (check_exec "$@") >> $logfile 2>&1 <<EOF
1054 #include <signal.h>
1055 static void sighandler(int sig){
1056     raise(SIGTERM);
1057 }
1058 int foo(void){
1059     $code
1060 }
1061 int (*func_ptr)(void) = foo;
1062 int main(void){
1063     signal(SIGILL, sighandler);
1064     signal(SIGFPE, sighandler);
1065     signal(SIGSEGV, sighandler);
1066 #ifdef SIGBUS
1067     signal(SIGBUS, sighandler);
1068 #endif
1069     return func_ptr();
1070 }
1071 EOF
1072 }
1073
1074 check_type(){
1075     log check_type "$@"
1076     headers=$1
1077     type=$2
1078     shift 2
1079     disable_safe "$type"
1080     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1081 }
1082
1083 check_struct(){
1084     log check_struct "$@"
1085     headers=$1
1086     struct=$2
1087     member=$3
1088     shift 3
1089     disable_safe "${struct}_${member}"
1090     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1091         enable_safe "${struct}_${member}"
1092 }
1093
1094 check_builtin(){
1095     log check_builtin "$@"
1096     name=$1
1097     headers=$2
1098     builtin=$3
1099     shift 3
1100     disable "$name"
1101     check_code ld "$headers" "$builtin" "$@" && enable "$name"
1102 }
1103
1104 check_compile_assert(){
1105     log check_compile_assert "$@"
1106     name=$1
1107     headers=$2
1108     condition=$3
1109     shift 3
1110     disable "$name"
1111     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1112 }
1113
1114 require(){
1115     log require "$@"
1116     name_version="$1"
1117     name="${1%% *}"
1118     headers="$2"
1119     func="$3"
1120     shift 3
1121     check_lib $name "$headers" $func "$@" || die "ERROR: $name_version not found"
1122 }
1123
1124 require_header(){
1125     log require "$@"
1126     header="$1"
1127     shift
1128     check_header "$header" "$@" || die "ERROR: $header not found"
1129 }
1130
1131 require_cpp_condition(){
1132     log require "$@"
1133     header="$1"
1134     condition="$2"
1135     shift 2
1136     check_cpp_condition "$header" "$condition" "$@" || die "ERROR: $condition not satisfied"
1137 }
1138
1139 require_pkg_config(){
1140     log require_pkg_config "$@"
1141     pkg_version="$2"
1142     check_pkg_config "$@" || die "ERROR: $pkg_version not found"
1143 }
1144
1145 hostcc_e(){
1146     eval printf '%s\\n' $HOSTCC_E
1147 }
1148
1149 hostcc_o(){
1150     eval printf '%s\\n' $HOSTCC_O
1151 }
1152
1153 check_host_cc(){
1154     log check_host_cc "$@"
1155     cat > $TMPC
1156     log_file $TMPC
1157     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1158 }
1159
1160 check_host_cpp(){
1161     log check_host_cpp "$@"
1162     cat > $TMPC
1163     log_file $TMPC
1164     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1165 }
1166
1167 check_host_cppflags(){
1168     log check_host_cppflags "$@"
1169     check_host_cpp "$@" <<EOF && append host_cppflags "$@"
1170 #include <stdlib.h>;
1171 EOF
1172 }
1173
1174 check_host_cflags(){
1175     log check_host_cflags "$@"
1176     set -- $($host_cflags_filter "$@")
1177     check_host_cc "$@" <<EOF && append host_cflags "$@"
1178 int x;
1179 EOF
1180 }
1181
1182 check_host_cpp_condition(){
1183     log check_host_cpp_condition "$@"
1184     header=$1
1185     condition=$2
1186     shift 2
1187     check_host_cpp "$@" <<EOF
1188 #include <$header>
1189 #if !($condition)
1190 #error "unsatisfied condition: $condition"
1191 #endif
1192 EOF
1193 }
1194
1195 apply(){
1196     file=$1
1197     shift
1198     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1199 }
1200
1201 cp_if_changed(){
1202     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1203     mkdir -p "$(dirname $2)"
1204     cp -f "$1" "$2"
1205 }
1206
1207 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1208 # system-dependent things.
1209
1210 AVCODEC_COMPONENTS="
1211     bsfs
1212     decoders
1213     encoders
1214     hwaccels
1215     parsers
1216 "
1217
1218 AVDEVICE_COMPONENTS="
1219     indevs
1220     outdevs
1221 "
1222 AVFILTER_COMPONENTS="
1223     filters
1224 "
1225 AVFORMAT_COMPONENTS="
1226     demuxers
1227     muxers
1228     protocols
1229 "
1230
1231 AVRESAMPLE_COMPONENTS=""
1232 AVUTIL_COMPONENTS=""
1233
1234 COMPONENT_LIST="
1235     $AVCODEC_COMPONENTS
1236     $AVDEVICE_COMPONENTS
1237     $AVFILTER_COMPONENTS
1238     $AVFORMAT_COMPONENTS
1239     $AVRESAMPLE_COMPONENTS
1240     $AVUTIL_COMPONENTS
1241 "
1242
1243 EXAMPLE_LIST="
1244     decode_audio_example
1245     decode_video_example
1246     encode_audio_example
1247     encode_video_example
1248     filter_audio_example
1249     metadata_example
1250     output_example
1251     qsvdec_example
1252     transcode_aac_example
1253 "
1254
1255 HWACCEL_LIBRARY_NONFREE_LIST="
1256     cuda
1257     libnpp
1258 "
1259 HWACCEL_LIBRARY_LIST="
1260     $HWACCEL_LIBRARY_NONFREE_LIST
1261     d3d11va
1262     dxva2
1263     libmfx
1264     mmal
1265     nvenc
1266     omx
1267     vaapi
1268     vda
1269     vdpau
1270 "
1271
1272 EXTERNAL_LIBRARY_GPL_LIST="
1273     libcdio
1274     libx264
1275     libx265
1276     libxavs
1277     libxvid
1278 "
1279
1280 EXTERNAL_LIBRARY_NONFREE_LIST="
1281     libfaac
1282     libfdk_aac
1283     openssl
1284 "
1285
1286 EXTERNAL_LIBRARY_VERSION3_LIST="
1287     libopencore_amrnb
1288     libopencore_amrwb
1289     libvo_aacenc
1290     libvo_amrwbenc
1291 "
1292
1293 EXTERNAL_LIBRARY_LIST="
1294     $EXTERNAL_LIBRARY_GPL_LIST
1295     $EXTERNAL_LIBRARY_NONFREE_LIST
1296     $EXTERNAL_LIBRARY_VERSION3_LIST
1297     avisynth
1298     avxsynth
1299     bzlib
1300     frei0r
1301     gnutls
1302     libbs2b
1303     libdc1394
1304     libdcadec
1305     libfontconfig
1306     libfreetype
1307     libgsm
1308     libhdcd
1309     libilbc
1310     libkvazaar
1311     libmp3lame
1312     libopencv
1313     libopenh264
1314     libopenjpeg
1315     libopus
1316     libpulse
1317     librtmp
1318     libschroedinger
1319     libsnappy
1320     libspeex
1321     libtheora
1322     libtwolame
1323     libvorbis
1324     libvpx
1325     libwavpack
1326     libwebp
1327     libxcb
1328     libxcb_shm
1329     libxcb_xfixes
1330     zlib
1331 "
1332
1333 FEATURE_LIST="
1334     gray
1335     hardcoded_tables
1336     omx_rpi
1337     runtime_cpudetect
1338     safe_bitstream_reader
1339     shared
1340     small
1341     sram
1342     static
1343     swscale_alpha
1344 "
1345
1346 LIBRARY_LIST="
1347     avcodec
1348     avdevice
1349     avfilter
1350     avformat
1351     avresample
1352     avutil
1353     swscale
1354 "
1355
1356 LICENSE_LIST="
1357     gpl
1358     nonfree
1359     version3
1360 "
1361
1362 PROGRAM_LIST="
1363     avconv
1364     avplay
1365     avprobe
1366 "
1367
1368 SUBSYSTEM_LIST="
1369     dct
1370     doc
1371     error_resilience
1372     faan
1373     fft
1374     lsp
1375     lzo
1376     mdct
1377     network
1378     rdft
1379 "
1380
1381 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1382 CONFIG_LIST="
1383     $EXAMPLE_LIST
1384     $EXTERNAL_LIBRARY_LIST
1385     $HWACCEL_LIBRARY_LIST
1386     $FEATURE_LIST
1387     $LICENSE_LIST
1388     $LIBRARY_LIST
1389     $PROGRAM_LIST
1390     $SUBSYSTEM_LIST
1391     neon_clobber_test
1392     pic
1393     pod2man
1394     texi2html
1395     thumb
1396     valgrind_backtrace
1397     xmm_clobber_test
1398     $COMPONENT_LIST
1399 "
1400
1401 THREADS_LIST="
1402     pthreads
1403     w32threads
1404 "
1405
1406 ATOMICS_LIST="
1407     atomics_gcc
1408     atomics_suncc
1409     atomics_win32
1410 "
1411
1412 ARCH_LIST="
1413     aarch64
1414     alpha
1415     arm
1416     avr32
1417     avr32_ap
1418     avr32_uc
1419     bfin
1420     ia64
1421     m68k
1422     mips
1423     mips64
1424     parisc
1425     ppc
1426     ppc64
1427     s390
1428     sh4
1429     sparc
1430     sparc64
1431     tilegx
1432     tilepro
1433     tomi
1434     x86
1435     x86_32
1436     x86_64
1437 "
1438
1439 ARCH_EXT_LIST_ARM="
1440     armv5te
1441     armv6
1442     armv6t2
1443     armv8
1444     neon
1445     vfp
1446     vfpv3
1447 "
1448
1449 ARCH_EXT_LIST_X86_SIMD="
1450     amd3dnow
1451     amd3dnowext
1452     avx
1453     avx2
1454     fma3
1455     fma4
1456     mmx
1457     mmxext
1458     sse
1459     sse2
1460     sse3
1461     sse4
1462     sse42
1463     ssse3
1464     xop
1465 "
1466
1467 ARCH_EXT_LIST_PPC="
1468     altivec
1469     dcbzl
1470     ldbrx
1471     power8
1472     ppc4xx
1473     vsx
1474 "
1475
1476 ARCH_EXT_LIST_X86="
1477     $ARCH_EXT_LIST_X86_SIMD
1478     cpunop
1479     i686
1480 "
1481
1482 ARCH_EXT_LIST_MIPS="
1483     loongson
1484     mips32r1
1485     mips64r1
1486     mips32r2
1487     mips64r2
1488     mips32r6
1489     mips64r6
1490 "
1491
1492 ARCH_EXT_LIST="
1493     $ARCH_EXT_LIST_ARM
1494     $ARCH_EXT_LIST_MIPS
1495     $ARCH_EXT_LIST_PPC
1496     $ARCH_EXT_LIST_X86
1497     vis
1498 "
1499
1500 ARCH_FEATURES="
1501     aligned_stack
1502     fast_64bit
1503     fast_clz
1504     fast_cmov
1505     local_aligned_8
1506     local_aligned_16
1507     local_aligned_32
1508     simd_align_16
1509     simd_align_32
1510 "
1511
1512 BUILTIN_LIST="
1513     atomic_cas_ptr
1514     machine_rw_barrier
1515     MemoryBarrier
1516     mm_empty
1517     rdtsc
1518     sem_timedwait
1519     sync_val_compare_and_swap
1520 "
1521 HAVE_LIST_CMDLINE="
1522     inline_asm
1523     symver
1524     yasm
1525 "
1526
1527 HAVE_LIST_PUB="
1528     bigendian
1529     fast_unaligned
1530 "
1531
1532 HEADERS_LIST="
1533     AVFoundation_AVFoundation_h
1534     alsa_asoundlib_h
1535     altivec_h
1536     arpa_inet_h
1537     cdio_paranoia_h
1538     cdio_paranoia_paranoia_h
1539     d3d11_h
1540     dispatch_dispatch_h
1541     dev_bktr_ioctl_bt848_h
1542     dev_bktr_ioctl_meteor_h
1543     dev_ic_bt8xx_h
1544     dev_video_bktr_ioctl_bt848_h
1545     dev_video_meteor_ioctl_meteor_h
1546     direct_h
1547     dlfcn_h
1548     dxva_h
1549     gsm_h
1550     io_h
1551     mach_mach_time_h
1552     machine_ioctl_bt848_h
1553     machine_ioctl_meteor_h
1554     malloc_h
1555     poll_h
1556     sndio_h
1557     soundcard_h
1558     stdatomic_h
1559     sys_mman_h
1560     sys_param_h
1561     sys_resource_h
1562     sys_select_h
1563     sys_soundcard_h
1564     sys_time_h
1565     sys_un_h
1566     sys_videoio_h
1567     unistd_h
1568     valgrind_valgrind_h
1569     windows_h
1570     winsock2_h
1571 "
1572
1573 INTRINSICS_LIST="
1574     intrinsics_neon
1575 "
1576
1577 MATH_FUNCS="
1578     atanf
1579     atan2f
1580     cbrtf
1581     cosf
1582     exp2
1583     exp2f
1584     expf
1585     isinf
1586     isnan
1587     ldexpf
1588     llrint
1589     llrintf
1590     log2
1591     log2f
1592     log10f
1593     lrint
1594     lrintf
1595     powf
1596     rint
1597     round
1598     roundf
1599     sinf
1600     trunc
1601     truncf
1602 "
1603
1604 SYSTEM_FUNCS="
1605     aligned_malloc
1606     clock_gettime
1607     closesocket
1608     CommandLineToArgvW
1609     CoTaskMemFree
1610     CryptGenRandom
1611     dlopen
1612     fcntl
1613     flt_lim
1614     fork
1615     getaddrinfo
1616     gethrtime
1617     getopt
1618     GetProcessAffinityMask
1619     GetProcessMemoryInfo
1620     GetProcessTimes
1621     getrusage
1622     GetSystemTimeAsFileTime
1623     gettimeofday
1624     gmtime_r
1625     inet_aton
1626     isatty
1627     jack_port_get_latency_range
1628     LoadLibrary
1629     localtime_r
1630     mach_absolute_time
1631     MapViewOfFile
1632     memalign
1633     mkstemp
1634     mmap
1635     mprotect
1636     nanosleep
1637     posix_memalign
1638     sched_getaffinity
1639     SetConsoleTextAttribute
1640     setmode
1641     setrlimit
1642     Sleep
1643     strerror_r
1644     sysconf
1645     sysctl
1646     usleep
1647     VirtualAlloc
1648 "
1649
1650 TOOLCHAIN_FEATURES="
1651     as_dn_directive
1652     as_fpu_directive
1653     as_func
1654     as_object_arch
1655     asm_mod_q
1656     attribute_may_alias
1657     attribute_packed
1658     blocks_extension
1659     ebp_available
1660     ebx_available
1661     gnu_as
1662     ibm_asm
1663     inline_asm_labels
1664     pragma_deprecated
1665     symver_asm_label
1666     symver_gnu_asm
1667     vfp_args
1668     xform_asm
1669     xmm_clobbers
1670 "
1671
1672 TYPES_LIST="
1673     CONDITION_VARIABLE_Ptr
1674     socklen_t
1675     struct_addrinfo
1676     struct_group_source_req
1677     struct_ip_mreq_source
1678     struct_ipv6_mreq
1679     struct_pollfd
1680     struct_rusage_ru_maxrss
1681     struct_sockaddr_in6
1682     struct_sockaddr_sa_len
1683     struct_sockaddr_storage
1684     struct_v4l2_frmivalenum_discrete
1685 "
1686
1687 HAVE_LIST="
1688     $ARCH_EXT_LIST
1689     $(add_suffix _external $ARCH_EXT_LIST)
1690     $(add_suffix _inline   $ARCH_EXT_LIST)
1691     $ARCH_FEATURES
1692     $BUILTIN_LIST
1693     $HAVE_LIST_CMDLINE
1694     $HAVE_LIST_PUB
1695     $HEADERS_LIST
1696     $INTRINSICS_LIST
1697     $MATH_FUNCS
1698     $SYSTEM_FUNCS
1699     $THREADS_LIST
1700     $TOOLCHAIN_FEATURES
1701     $TYPES_LIST
1702     dos_paths
1703     dxva2_lib
1704     libc_msvcrt
1705     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1706     sdl
1707     section_data_rel_ro
1708     threads
1709     vaapi_drm
1710     vaapi_x11
1711     vdpau_x11
1712 "
1713
1714 # options emitted with CONFIG_ prefix but not available on the command line
1715 CONFIG_EXTRA="
1716     aandcttables
1717     ac3dsp
1718     audio_frame_queue
1719     audiodsp
1720     blockdsp
1721     bswapdsp
1722     cabac
1723     dirac_parse
1724     dvprofile
1725     faandct
1726     faanidct
1727     fdctdsp
1728     flacdsp
1729     fmtconvert
1730     g722dsp
1731     gmp
1732     golomb
1733     gplv3
1734     h263dsp
1735     h264chroma
1736     h264dsp
1737     h264parse
1738     h264pred
1739     h264qpel
1740     hevc_ps
1741     hpeldsp
1742     huffman
1743     huffyuvdsp
1744     huffyuvencdsp
1745     idctdsp
1746     iirfilter
1747     imdct15
1748     intrax8
1749     iso_media
1750     ividsp
1751     jpegtables
1752     lgplv3
1753     libx262
1754     libxcb_shape
1755     lpc
1756     lzf
1757     me_cmp
1758     mpeg_er
1759     mpegaudio
1760     mpegaudiodsp
1761     mpegaudioheader
1762     mpegvideo
1763     mpegvideoenc
1764     mss34dsp
1765     pixblockdsp
1766     qpeldsp
1767     qsv
1768     qsvdec
1769     qsvenc
1770     rangecoder
1771     riffdec
1772     riffenc
1773     rtpdec
1774     rtpenc_chain
1775     rv34dsp
1776     sinewin
1777     snappy
1778     srtp
1779     startcode
1780     texturedsp
1781     texturedspenc
1782     tpeldsp
1783     vaapi_encode
1784     vc1dsp
1785     videodsp
1786     vp3dsp
1787     vp56dsp
1788     vp8dsp
1789     wma_freqs
1790     wmv2dsp
1791 "
1792
1793 CMDLINE_SELECT="
1794     $ARCH_EXT_LIST
1795     $CONFIG_LIST
1796     $HAVE_LIST_CMDLINE
1797     $THREADS_LIST
1798     asm
1799     cross_compile
1800     debug
1801     extra_warnings
1802     logging
1803     lto
1804     optimizations
1805     rpath
1806 "
1807
1808 PATHS_LIST="
1809     bindir
1810     datadir
1811     docdir
1812     incdir
1813     libdir
1814     mandir
1815     prefix
1816     shlibdir
1817 "
1818
1819 CMDLINE_SET="
1820     $PATHS_LIST
1821     ar
1822     arch
1823     as
1824     cc
1825     objcc
1826     cpu
1827     cross_prefix
1828     custom_allocator
1829     dep_cc
1830     env
1831     extra_version
1832     host_cc
1833     host_cflags
1834     host_extralibs
1835     host_ld
1836     host_ldflags
1837     host_os
1838     ignore_tests
1839     ld
1840     logfile
1841     malloc_prefix
1842     nm
1843     optflags
1844     pkg_config
1845     pkg_config_flags
1846     random_seed
1847     samples
1848     sysinclude
1849     sysroot
1850     target_exec
1851     target_os
1852     target_path
1853     target_samples
1854     toolchain
1855 "
1856
1857 CMDLINE_APPEND="
1858     extra_cflags
1859     extra_objcflags
1860     host_cppflags
1861 "
1862
1863 # code dependency declarations
1864
1865 # architecture extensions
1866
1867 armv5te_deps="arm"
1868 armv6_deps="arm"
1869 armv6t2_deps="arm"
1870 armv8_deps="aarch64"
1871 neon_deps_any="aarch64 arm"
1872 intrinsics_neon_deps="neon"
1873 vfp_deps_any="aarch64 arm"
1874 vfpv3_deps="vfp"
1875
1876 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1877
1878 altivec_deps="ppc"
1879 ppc4xx_deps="ppc"
1880 vsx_deps="altivec"
1881 power8_deps="vsx"
1882
1883 cpunop_deps="i686"
1884 x86_64_select="i686"
1885 x86_64_suggest="fast_cmov"
1886
1887 amd3dnow_deps="mmx"
1888 amd3dnowext_deps="amd3dnow"
1889 i686_deps="x86"
1890 mmx_deps="x86"
1891 mmxext_deps="mmx"
1892 sse_deps="mmxext"
1893 sse2_deps="sse"
1894 sse3_deps="sse2"
1895 ssse3_deps="sse3"
1896 sse4_deps="ssse3"
1897 sse42_deps="sse4"
1898 avx_deps="sse42"
1899 xop_deps="avx"
1900 fma3_deps="avx"
1901 fma4_deps="avx"
1902 avx2_deps="avx"
1903
1904 mmx_external_deps="yasm"
1905 mmx_inline_deps="inline_asm"
1906 mmx_suggest="mmx_external mmx_inline"
1907
1908 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1909     eval dep=\$${ext}_deps
1910     eval ${ext}_external_deps='"${dep}_external"'
1911     eval ${ext}_inline_deps='"${dep}_inline"'
1912     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1913 done
1914
1915 aligned_stack_if_any="aarch64 ppc x86"
1916 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1917 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1918 fast_unaligned_if_any="aarch64 ppc x86"
1919 simd_align_16_if_any="altivec neon sse"
1920 simd_align_32_if_any="avx"
1921
1922 # system capabilities
1923 symver_if_any="symver_asm_label symver_gnu_asm"
1924 valgrind_backtrace_conflict="optimizations"
1925 valgrind_backtrace_deps="valgrind_valgrind_h"
1926
1927 # threading support
1928 atomics_gcc_if="sync_val_compare_and_swap"
1929 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1930 atomics_win32_if="MemoryBarrier"
1931 atomics_native_if_any="$ATOMICS_LIST"
1932 w32threads_deps="atomics_native"
1933 threads_if_any="$THREADS_LIST"
1934
1935 # subsystems
1936 dct_select="rdft"
1937 dirac_parse_select="golomb"
1938 error_resilience_select="me_cmp"
1939 faandct_deps="faan fdctdsp"
1940 faanidct_deps="faan idctdsp"
1941 h264dsp_select="startcode"
1942 hevc_ps_select="golomb"
1943 intrax8_select="blockdsp idctdsp"
1944 mdct_select="fft"
1945 rdft_select="fft"
1946 me_cmp_select="fdctdsp idctdsp pixblockdsp"
1947 mpeg_er_select="error_resilience"
1948 mpegaudio_select="mpegaudiodsp mpegaudioheader"
1949 mpegaudiodsp_select="dct"
1950 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
1951 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
1952 vc1dsp_select="h264chroma qpeldsp startcode"
1953
1954 # decoders / encoders
1955 aac_decoder_select="imdct15 mdct sinewin"
1956 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
1957 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1958 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
1959 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
1960 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
1961 adpcm_g722_decoder_select="g722dsp"
1962 adpcm_g722_encoder_select="g722dsp"
1963 aic_decoder_select="golomb idctdsp"
1964 alac_encoder_select="lpc"
1965 als_decoder_select="bswapdsp"
1966 amrnb_decoder_select="lsp"
1967 amrwb_decoder_select="lsp"
1968 amv_decoder_select="sp5x_decoder"
1969 ape_decoder_select="bswapdsp"
1970 asv1_decoder_select="blockdsp bswapdsp idctdsp"
1971 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
1972 asv2_decoder_select="blockdsp bswapdsp idctdsp"
1973 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
1974 atrac1_decoder_select="mdct sinewin"
1975 atrac3_decoder_select="mdct"
1976 atrac3p_decoder_select="mdct sinewin"
1977 bink_decoder_select="blockdsp hpeldsp"
1978 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
1979 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
1980 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
1981 cllc_decoder_select="bswapdsp"
1982 comfortnoise_encoder_select="lpc"
1983 cook_decoder_select="audiodsp mdct sinewin"
1984 cscd_decoder_select="lzo"
1985 cscd_decoder_suggest="zlib"
1986 dca_decoder_select="fmtconvert mdct"
1987 dds_decoder_select="texturedsp"
1988 dnxhd_decoder_select="blockdsp idctdsp"
1989 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
1990 dvvideo_decoder_select="dvprofile idctdsp"
1991 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
1992 dxa_decoder_deps="zlib"
1993 dxv_decoder_select="lzf texturedsp"
1994 eac3_decoder_select="ac3_decoder"
1995 eac3_encoder_select="ac3_encoder"
1996 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
1997 eatgq_decoder_select="aandcttables idctdsp"
1998 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
1999 exr_decoder_deps="zlib"
2000 ffv1_decoder_select="rangecoder"
2001 ffv1_encoder_select="rangecoder"
2002 ffvhuff_decoder_select="huffyuv_decoder"
2003 ffvhuff_encoder_select="huffyuv_encoder"
2004 fic_decoder_select="golomb"
2005 flac_decoder_select="flacdsp"
2006 flac_encoder_select="bswapdsp flacdsp lpc"
2007 flashsv_decoder_deps="zlib"
2008 flashsv_encoder_deps="zlib"
2009 flashsv2_decoder_deps="zlib"
2010 flv_decoder_select="h263_decoder"
2011 flv_encoder_select="h263_encoder"
2012 fourxm_decoder_select="blockdsp bswapdsp"
2013 fraps_decoder_select="bswapdsp huffman"
2014 g2m_decoder_deps="zlib"
2015 g2m_decoder_select="blockdsp idctdsp jpegtables"
2016 h261_decoder_select="mpeg_er mpegvideo"
2017 h261_encoder_select="aandcttables mpegvideoenc"
2018 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2019 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2020 h263i_decoder_select="h263_decoder"
2021 h263p_encoder_select="h263_encoder"
2022 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2023 h264_decoder_suggest="error_resilience"
2024 hap_decoder_select="snappy texturedsp"
2025 hap_encoder_deps="libsnappy"
2026 hap_encoder_select="texturedspenc"
2027 hevc_decoder_select="bswapdsp cabac hevc_ps videodsp"
2028 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2029 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2030 iac_decoder_select="imc_decoder"
2031 imc_decoder_select="bswapdsp fft mdct sinewin"
2032 indeo3_decoder_select="hpeldsp"
2033 indeo4_decoder_select="ividsp"
2034 indeo5_decoder_select="ividsp"
2035 interplay_video_decoder_select="hpeldsp"
2036 jpegls_decoder_select="mjpeg_decoder"
2037 jv_decoder_select="blockdsp"
2038 lagarith_decoder_select="huffyuvdsp"
2039 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2040 magicyuv_decoder_select="huffyuvdsp"
2041 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2042 metasound_decoder_select="lsp mdct sinewin"
2043 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2044 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2045 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2046 mjpegb_decoder_select="mjpeg_decoder"
2047 mlp_decoder_select="mlp_parser"
2048 motionpixels_decoder_select="bswapdsp"
2049 mp1_decoder_select="mpegaudio"
2050 mp1float_decoder_select="mpegaudio"
2051 mp2_decoder_select="mpegaudio"
2052 mp2float_decoder_select="mpegaudio"
2053 mp3_decoder_select="mpegaudio"
2054 mp3adu_decoder_select="mpegaudio"
2055 mp3adufloat_decoder_select="mpegaudio"
2056 mp3float_decoder_select="mpegaudio"
2057 mp3on4_decoder_select="mpegaudio"
2058 mp3on4float_decoder_select="mpegaudio"
2059 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2060 mpc8_decoder_select="mpegaudiodsp"
2061 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2062 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2063 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2064 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2065 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2066 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2067 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2068 mpeg4_encoder_select="h263_encoder"
2069 msa1_decoder_select="mss34dsp"
2070 msmpeg4v1_decoder_select="h263_decoder"
2071 msmpeg4v2_decoder_select="h263_decoder"
2072 msmpeg4v2_encoder_select="h263_encoder"
2073 msmpeg4v3_decoder_select="h263_decoder"
2074 msmpeg4v3_encoder_select="h263_encoder"
2075 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2076 mts2_decoder_select="mss34dsp"
2077 mxpeg_decoder_select="mjpeg_decoder"
2078 nellymoser_decoder_select="mdct sinewin"
2079 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2080 nuv_decoder_select="idctdsp lzo"
2081 on2avc_decoder_select="mdct"
2082 opus_decoder_deps="avresample"
2083 opus_decoder_select="imdct15"
2084 png_decoder_deps="zlib"
2085 png_encoder_deps="zlib"
2086 png_encoder_select="huffyuvencdsp"
2087 prores_decoder_select="idctdsp"
2088 prores_encoder_select="fdctdsp"
2089 qcelp_decoder_select="lsp"
2090 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2091 ra_144_encoder_select="audio_frame_queue lpc"
2092 ralf_decoder_select="golomb"
2093 rscc_decoder_deps="zlib"
2094 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2095 rv10_encoder_select="h263_encoder"
2096 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2097 rv20_encoder_select="h263_encoder"
2098 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2099 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2100 screenpresso_decoder_deps="zlib"
2101 sipr_decoder_select="lsp"
2102 sp5x_decoder_select="mjpeg_decoder"
2103 svq1_decoder_select="hpeldsp"
2104 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2105 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2106 svq3_decoder_suggest="zlib"
2107 tak_decoder_select="audiodsp"
2108 tdsc_decoder_deps="zlib"
2109 tdsc_decoder_select="mjpeg_decoder"
2110 theora_decoder_select="vp3_decoder"
2111 thp_decoder_select="mjpeg_decoder"
2112 tiff_decoder_suggest="zlib"
2113 tiff_encoder_suggest="zlib"
2114 truehd_decoder_select="mlp_decoder"
2115 truemotion2_decoder_select="bswapdsp"
2116 truespeech_decoder_select="bswapdsp"
2117 tscc_decoder_deps="zlib"
2118 txd_decoder_select="texturedsp"
2119 twinvq_decoder_select="mdct lsp sinewin"
2120 utvideo_decoder_select="bswapdsp"
2121 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2122 vble_decoder_select="huffyuvdsp"
2123 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2124 vc1image_decoder_select="vc1_decoder"
2125 vorbis_decoder_select="mdct"
2126 vorbis_encoder_select="mdct"
2127 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2128 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2129 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2130 vp6a_decoder_select="vp6_decoder"
2131 vp6f_decoder_select="vp6_decoder"
2132 vp7_decoder_select="h264pred videodsp vp8dsp"
2133 vp8_decoder_select="h264pred videodsp vp8dsp"
2134 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2135 webp_decoder_select="vp8_decoder"
2136 wmapro_decoder_select="mdct sinewin wma_freqs"
2137 wmav1_decoder_select="mdct sinewin wma_freqs"
2138 wmav1_encoder_select="mdct sinewin wma_freqs"
2139 wmav2_decoder_select="mdct sinewin wma_freqs"
2140 wmav2_encoder_select="mdct sinewin wma_freqs"
2141 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2142 wmv1_decoder_select="h263_decoder"
2143 wmv1_encoder_select="h263_encoder"
2144 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2145 wmv2_encoder_select="h263_encoder wmv2dsp"
2146 wmv3_decoder_select="vc1_decoder"
2147 wmv3image_decoder_select="wmv3_decoder"
2148 zerocodec_decoder_deps="zlib"
2149 zlib_decoder_deps="zlib"
2150 zlib_encoder_deps="zlib"
2151 zmbv_decoder_deps="zlib"
2152 zmbv_encoder_deps="zlib"
2153
2154 # hardware accelerators
2155 d3d11va_deps="d3d11_h dxva_h ID3D11VideoDecoder"
2156 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode"
2157 dxva2_lib_deps="dxva2"
2158 vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
2159 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2160
2161 h263_vaapi_hwaccel_deps="vaapi"
2162 h263_vaapi_hwaccel_select="h263_decoder"
2163 h264_d3d11va_hwaccel_deps="d3d11va"
2164 h264_d3d11va_hwaccel_select="h264_decoder"
2165 h264_dxva2_hwaccel_deps="dxva2"
2166 h264_dxva2_hwaccel_select="h264_decoder"
2167 h264_mmal_hwaccel_deps="mmal"
2168 h264_qsv_hwaccel_deps="libmfx"
2169 h264_vaapi_hwaccel_deps="vaapi"
2170 h264_vaapi_hwaccel_select="h264_decoder"
2171 h264_vda_hwaccel_deps="vda"
2172 h264_vda_hwaccel_select="h264_decoder"
2173 h264_vda_old_hwaccel_deps="vda"
2174 h264_vda_old_hwaccel_select="h264_decoder"
2175 h264_vdpau_hwaccel_deps="vdpau"
2176 h264_vdpau_hwaccel_select="h264_decoder"
2177 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2178 hevc_d3d11va_hwaccel_select="hevc_decoder"
2179 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2180 hevc_dxva2_hwaccel_select="hevc_decoder"
2181 hevc_qsv_hwaccel_deps="libmfx"
2182 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2183 hevc_vaapi_hwaccel_select="hevc_decoder"
2184 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2185 hevc_vdpau_hwaccel_select="hevc_decoder"
2186 mpeg1_vdpau_hwaccel_deps="vdpau"
2187 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2188 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2189 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2190 mpeg2_dxva2_hwaccel_deps="dxva2"
2191 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2192 mpeg2_mmal_hwaccel_deps="mmal"
2193 mpeg2_qsv_hwaccel_deps="libmfx"
2194 mpeg2_vaapi_hwaccel_deps="vaapi"
2195 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2196 mpeg2_vdpau_hwaccel_deps="vdpau"
2197 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2198 mpeg4_vaapi_hwaccel_deps="vaapi"
2199 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2200 mpeg4_vdpau_hwaccel_deps="vdpau"
2201 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2202 vc1_d3d11va_hwaccel_deps="d3d11va"
2203 vc1_d3d11va_hwaccel_select="vc1_decoder"
2204 vc1_dxva2_hwaccel_deps="dxva2"
2205 vc1_dxva2_hwaccel_select="vc1_decoder"
2206 vc1_mmal_hwaccel_deps="mmal"
2207 vc1_qsv_hwaccel_deps="libmfx"
2208 vc1_vaapi_hwaccel_deps="vaapi"
2209 vc1_vaapi_hwaccel_select="vc1_decoder"
2210 vc1_vdpau_hwaccel_deps="vdpau"
2211 vc1_vdpau_hwaccel_select="vc1_decoder"
2212 vp8_qsv_hwaccel_deps="libmfx"
2213 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2214 vp8_vaapi_hwaccel_select="vp8_decoder"
2215 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2216 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2217 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2218 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2219
2220 # hardware-accelerated codecs
2221 nvenc_deps_any="dlopen LoadLibrary"
2222 nvenc_extralibs='$ldl'
2223 omx_deps="dlopen pthreads"
2224 omx_extralibs='$ldl'
2225 omx_rpi_select="omx"
2226 qsvdec_select="qsv"
2227 qsvenc_select="qsv"
2228 vaapi_encode_deps="vaapi"
2229
2230 hwupload_cuda_filter_deps="cuda"
2231 scale_npp_filter_deps="cuda libnpp"
2232
2233 h264_mmal_decoder_deps="mmal"
2234 h264_nvenc_encoder_deps="nvenc"
2235 h264_omx_encoder_deps="omx"
2236 h264_qsv_decoder_deps="libmfx"
2237 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec h264_qsv_hwaccel"
2238 h264_qsv_encoder_deps="libmfx"
2239 h264_qsv_encoder_select="qsvenc"
2240 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2241 h264_vaapi_encoder_select="vaapi_encode golomb"
2242 hevc_nvenc_encoder_deps="nvenc"
2243 hevc_qsv_decoder_deps="libmfx"
2244 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser hevc_qsv_hwaccel qsvdec"
2245 hevc_qsv_encoder_deps="libmfx"
2246 hevc_qsv_encoder_select="hevc_ps qsvenc"
2247 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2248 hevc_vaapi_encoder_select="vaapi_encode golomb"
2249 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2250 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2251 mpeg2_mmal_decoder_deps="mmal"
2252 mpeg2_qsv_decoder_deps="libmfx"
2253 mpeg2_qsv_decoder_select="qsvdec mpeg2_qsv_hwaccel mpegvideo_parser"
2254 mpeg2_qsv_encoder_deps="libmfx"
2255 mpeg2_qsv_encoder_select="qsvenc"
2256 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2257 mpeg2_vaapi_encoder_select="vaapi_encode"
2258 mpeg4_omx_encoder_deps="omx"
2259 vc1_mmal_decoder_deps="mmal"
2260 vc1_qsv_decoder_deps="libmfx"
2261 vc1_qsv_decoder_select="qsvdec vc1_qsv_hwaccel vc1_parser"
2262 vp8_qsv_decoder_deps="libmfx"
2263 vp8_qsv_decoder_select="qsvdec vp8_qsv_hwaccel vp8_parser"
2264 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2265 vp8_vaapi_encoder_select="vaapi_encode"
2266
2267 nvenc_h264_encoder_select="h264_nvenc_encoder"
2268 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2269
2270 # parsers
2271 h264_parser_select="golomb h264dsp h264parse"
2272 hevc_parser_select="hevc_ps"
2273 mpegaudio_parser_select="mpegaudioheader"
2274 mpegvideo_parser_select="mpegvideo"
2275 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2276 vc1_parser_select="vc1dsp"
2277
2278 # bitstream_filters
2279 mjpeg2jpeg_bsf_select="jpegtables"
2280
2281 # external libraries
2282 avisynth_deps="LoadLibrary"
2283 avxsynth_deps="dlopen"
2284 avisynth_demuxer_deps_any="avisynth avxsynth"
2285 avisynth_demuxer_select="riffdec"
2286 libdcadec_decoder_deps="libdcadec"
2287 libfaac_encoder_deps="libfaac"
2288 libfaac_encoder_select="audio_frame_queue"
2289 libfdk_aac_decoder_deps="libfdk_aac"
2290 libfdk_aac_encoder_deps="libfdk_aac"
2291 libfdk_aac_encoder_select="audio_frame_queue"
2292 libgsm_decoder_deps="libgsm"
2293 libgsm_encoder_deps="libgsm"
2294 libgsm_ms_decoder_deps="libgsm"
2295 libgsm_ms_encoder_deps="libgsm"
2296 libilbc_decoder_deps="libilbc"
2297 libilbc_encoder_deps="libilbc"
2298 libkvazaar_encoder_deps="libkvazaar"
2299 libmp3lame_encoder_deps="libmp3lame"
2300 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2301 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2302 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2303 libopencore_amrnb_encoder_select="audio_frame_queue"
2304 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2305 libopenh264_decoder_deps="libopenh264"
2306 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2307 libopenh264_encoder_deps="libopenh264"
2308 libopenjpeg_decoder_deps="libopenjpeg"
2309 libopenjpeg_encoder_deps="libopenjpeg"
2310 libopus_decoder_deps="libopus"
2311 libopus_encoder_deps="libopus"
2312 libopus_encoder_select="audio_frame_queue"
2313 libschroedinger_decoder_deps="libschroedinger"
2314 libschroedinger_encoder_deps="libschroedinger"
2315 libspeex_decoder_deps="libspeex"
2316 libspeex_encoder_deps="libspeex"
2317 libspeex_encoder_select="audio_frame_queue"
2318 libtheora_encoder_deps="libtheora"
2319 libtwolame_encoder_deps="libtwolame"
2320 libvo_aacenc_encoder_deps="libvo_aacenc"
2321 libvo_aacenc_encoder_select="audio_frame_queue"
2322 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2323 libvorbis_encoder_deps="libvorbis"
2324 libvorbis_encoder_select="audio_frame_queue"
2325 libvpx_vp8_decoder_deps="libvpx"
2326 libvpx_vp8_encoder_deps="libvpx"
2327 libvpx_vp9_decoder_deps="libvpx"
2328 libvpx_vp9_encoder_deps="libvpx"
2329 libwavpack_encoder_deps="libwavpack"
2330 libwavpack_encoder_select="audio_frame_queue"
2331 libwebp_encoder_deps="libwebp"
2332 libx262_encoder_deps="libx262"
2333 libx264_encoder_deps="libx264"
2334 libx265_encoder_deps="libx265"
2335 libxavs_encoder_deps="libxavs"
2336 libxvid_encoder_deps="libxvid mkstemp"
2337
2338 # demuxers / muxers
2339 ac3_demuxer_select="ac3_parser"
2340 asf_demuxer_select="riffdec"
2341 asf_muxer_select="riffenc"
2342 asf_stream_muxer_select="asf_muxer"
2343 avi_demuxer_select="iso_media riffdec"
2344 avi_muxer_select="riffenc"
2345 caf_demuxer_select="iso_media riffdec"
2346 dash_muxer_select="mp4_muxer"
2347 dirac_demuxer_select="dirac_parser"
2348 dv_demuxer_select="dvprofile"
2349 dv_muxer_select="dvprofile"
2350 dxa_demuxer_select="riffdec"
2351 eac3_demuxer_select="ac3_parser"
2352 f4v_muxer_select="mov_muxer"
2353 flac_demuxer_select="flac_parser"
2354 hds_muxer_select="flv_muxer"
2355 hls_muxer_select="mpegts_muxer"
2356 ipod_muxer_select="mov_muxer"
2357 ismv_muxer_select="mov_muxer"
2358 matroska_audio_muxer_select="matroska_muxer"
2359 matroska_demuxer_select="iso_media riffdec"
2360 matroska_demuxer_suggest="bzlib lzo zlib"
2361 matroska_muxer_select="iso_media riffenc"
2362 mmf_muxer_select="riffenc"
2363 mov_demuxer_select="iso_media riffdec"
2364 mov_demuxer_suggest="zlib"
2365 mov_muxer_select="iso_media riffenc rtpenc_chain"
2366 mp3_demuxer_select="mpegaudio_parser"
2367 mp3_muxer_select="mpegaudioheader"
2368 mp4_muxer_select="mov_muxer"
2369 mpegts_demuxer_select="iso_media"
2370 mpegts_muxer_select="adts_muxer latm_muxer"
2371 mpegtsraw_demuxer_select="mpegts_demuxer"
2372 mxf_d10_muxer_select="mxf_muxer"
2373 nut_muxer_select="riffenc"
2374 nuv_demuxer_select="riffdec"
2375 oga_muxer_select="ogg_muxer"
2376 ogg_demuxer_select="dirac_parse"
2377 opus_muxer_select="ogg_muxer"
2378 psp_muxer_select="mov_muxer"
2379 rtp_demuxer_select="sdp_demuxer"
2380 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2381 rtsp_demuxer_select="http_protocol rtpdec"
2382 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2383 sap_demuxer_select="sdp_demuxer"
2384 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2385 sdp_demuxer_select="rtpdec"
2386 smoothstreaming_muxer_select="ismv_muxer"
2387 spdif_muxer_select="aac_parser"
2388 spx_muxer_select="ogg_muxer"
2389 swf_demuxer_suggest="zlib"
2390 tak_demuxer_select="tak_parser"
2391 tg2_muxer_select="mov_muxer"
2392 tgp_muxer_select="mov_muxer"
2393 w64_demuxer_select="wav_demuxer"
2394 wav_demuxer_select="riffdec"
2395 wav_muxer_select="riffenc"
2396 webm_muxer_select="iso_media riffenc"
2397 wtv_demuxer_select="mpegts_demuxer riffdec"
2398 xmv_demuxer_select="riffdec"
2399 xwma_demuxer_select="riffdec"
2400
2401 # indevs / outdevs
2402 alsa_indev_deps="alsa"
2403 alsa_outdev_deps="alsa"
2404 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2405 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2406 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2407 dv1394_indev_deps="dv1394"
2408 dv1394_indev_select="dv_demuxer"
2409 fbdev_indev_deps="linux_fb_h"
2410 jack_indev_deps="jack"
2411 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2412 libcdio_indev_deps="libcdio"
2413 libdc1394_indev_deps="libdc1394"
2414 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2415 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2416 pulse_indev_deps="libpulse"
2417 sndio_indev_deps="sndio"
2418 sndio_outdev_deps="sndio"
2419 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2420 vfwcap_indev_deps="vfw32 vfwcap_defines"
2421 xcbgrab_indev_deps="libxcb libxcb_shape"
2422 xcbgrab_indev_suggest="libxcb_shm libxcb_xfixes"
2423
2424 # protocols
2425 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
2426 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2427 ffrtmpcrypt_protocol_select="tcp_protocol"
2428 ffrtmphttp_protocol_conflict="librtmp_protocol"
2429 ffrtmphttp_protocol_select="http_protocol"
2430 gopher_protocol_select="network"
2431 http_protocol_select="tcp_protocol"
2432 httpproxy_protocol_select="tcp_protocol"
2433 https_protocol_select="tls_protocol"
2434 icecast_protocol_select="http_protocol"
2435 librtmp_protocol_deps="librtmp"
2436 librtmpe_protocol_deps="librtmp"
2437 librtmps_protocol_deps="librtmp"
2438 librtmpt_protocol_deps="librtmp"
2439 librtmpte_protocol_deps="librtmp"
2440 mmsh_protocol_select="http_protocol"
2441 mmst_protocol_select="network"
2442 rtmp_protocol_conflict="librtmp_protocol"
2443 rtmp_protocol_select="tcp_protocol"
2444 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2445 rtmps_protocol_conflict="librtmp_protocol"
2446 rtmps_protocol_select="tls_protocol"
2447 rtmpt_protocol_select="ffrtmphttp_protocol"
2448 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2449 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2450 rtp_protocol_select="udp_protocol"
2451 sctp_protocol_deps="struct_sctp_event_subscribe"
2452 sctp_protocol_select="network"
2453 srtp_protocol_select="rtp_protocol srtp"
2454 tcp_protocol_select="network"
2455 tls_gnutls_protocol_deps="gnutls"
2456 tls_gnutls_protocol_select="tcp_protocol"
2457 tls_openssl_protocol_conflict="tls_gnutls_protocol"
2458 tls_openssl_protocol_deps="openssl"
2459 tls_openssl_protocol_select="tcp_protocol"
2460 tls_protocol_deps_any="tls_gnutls_protocol tls_openssl_protocol"
2461 udp_protocol_select="network"
2462 unix_protocol_deps="sys_un_h"
2463 unix_protocol_select="network"
2464
2465 # filters
2466 asyncts_filter_deps="avresample"
2467 blackframe_filter_deps="gpl"
2468 boxblur_filter_deps="gpl"
2469 bs2b_filter_deps="libbs2b"
2470 cropdetect_filter_deps="gpl"
2471 deinterlace_qsv_filter_deps="libmfx"
2472 deinterlace_vaapi_filter_deps="vaapi"
2473 delogo_filter_deps="gpl"
2474 drawtext_filter_deps="libfreetype"
2475 drawtext_filter_suggest="libfontconfig"
2476 frei0r_filter_deps="frei0r dlopen"
2477 frei0r_filter_extralibs='$ldl'
2478 frei0r_src_filter_deps="frei0r dlopen"
2479 frei0r_src_filter_extralibs='$ldl'
2480 hdcd_filter_deps="libhdcd"
2481 hqdn3d_filter_deps="gpl"
2482 interlace_filter_deps="gpl"
2483 movie_filter_deps="avcodec avformat"
2484 ocv_filter_deps="libopencv"
2485 resample_filter_deps="avresample"
2486 scale_filter_deps="swscale"
2487 scale_qsv_filter_deps="libmfx"
2488 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2489
2490 # examples
2491 decode_audio_example_deps="avcodec avutil"
2492 decode_video_example_deps="avcodec avutil"
2493 encode_audio_example_deps="avcodec avutil"
2494 encode_video_example_deps="avcodec avutil"
2495 filter_audio_example_deps="avfilter avutil"
2496 metadata_example_deps="avformat avutil"
2497 output_example_deps="avcodec avformat avresample avutil swscale"
2498 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2499 transcode_aac_example_deps="avcodec avformat avresample"
2500
2501 # libraries, in linking order
2502 avcodec_deps="avutil"
2503 avcodec_select="null_bsf"
2504 avdevice_deps="avformat avcodec avutil"
2505 avfilter_deps="avutil"
2506 avformat_deps="avcodec avutil"
2507 avformat_suggest="network"
2508 avresample_deps="avutil"
2509 swscale_deps="avutil"
2510
2511 # programs
2512 avconv_deps="avcodec avfilter avformat avresample swscale"
2513 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2514                fps_filter null_filter resample_filter scale_filter
2515                trim_filter"
2516 avplay_deps="avcodec avfilter avformat avresample sdl"
2517 avplay_extralibs='$sdl_extralibs'
2518 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2519 avprobe_deps="avcodec avformat"
2520
2521 # documentation
2522 pod2man_deps="doc"
2523 texi2html_deps="doc"
2524
2525 # default parameters
2526
2527 logfile="avbuild/config.log"
2528
2529 # installation paths
2530 prefix_default="/usr/local"
2531 bindir_default='${prefix}/bin'
2532 datadir_default='${prefix}/share/avconv'
2533 docdir_default='${prefix}/share/doc/libav'
2534 incdir_default='${prefix}/include'
2535 libdir_default='${prefix}/lib'
2536 mandir_default='${prefix}/share/man'
2537 shlibdir_default="$libdir_default"
2538
2539 # toolchain
2540 ar_default="ar"
2541 cc_default="gcc"
2542 host_cc_default="gcc"
2543 ln_s="ln -s -f"
2544 nm_default="nm -g"
2545 objformat="elf"
2546 pkg_config_default=pkg-config
2547 ranlib="ranlib"
2548 strip="strip"
2549 version_script='--version-script'
2550 yasmexe="yasm"
2551
2552 # machine
2553 arch_default=$(uname -m)
2554 cpu="generic"
2555 intrinsics="none"
2556
2557 # OS
2558 target_os_default=$(tolower $(uname -s))
2559 host_os=$target_os_default
2560
2561 # configurable options
2562 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2563
2564 enable asm
2565 enable debug
2566 enable doc
2567 enable faan faandct faanidct
2568 enable optimizations
2569 enable safe_bitstream_reader
2570 enable static
2571 enable swscale_alpha
2572 enable valgrind_backtrace
2573
2574 # By default, enable only those hwaccels that have no external dependencies.
2575 enable d3d11va dxva2 vda vdpau
2576
2577 # build settings
2578 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2579 LIBPREF="lib"
2580 LIBSUF=".a"
2581 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2582 SLIBPREF="lib"
2583 SLIBSUF=".so"
2584 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2585 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2586 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2587 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2588 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2589 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2590 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2591
2592 asflags_filter=echo
2593 cflags_filter=echo
2594 ldflags_filter=echo
2595
2596 AS_C='-c'
2597 AS_O='-o $@'
2598 CC_C='-c'
2599 CC_E='-E -o $@'
2600 CC_O='-o $@'
2601 OBJCC_C='-c'
2602 OBJCC_E='-E -o $@'
2603 OBJCC_O='-o $@'
2604 LD_O='-o $@'
2605 LD_LIB='-l%'
2606 LD_PATH='-L'
2607 HOSTCC_C='-c'
2608 HOSTCC_E='-E -o $@'
2609 HOSTCC_O='-o $@'
2610 HOSTLD_O='-o $@'
2611
2612 host_extralibs='-lm'
2613 host_cflags_filter=echo
2614 host_ldflags_filter=echo
2615
2616 target_path='$(CURDIR)'
2617
2618 # since the object filename is not given with the -MM flag, the compiler
2619 # is only able to print the basename, and we must add the path ourselves
2620 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2621 DEPFLAGS='-MM'
2622
2623 mkdir -p avbuild
2624
2625 # find source path
2626 if test -f configure; then
2627     source_path=.
2628 else
2629     source_path=$(cd $(dirname "$0"); pwd)
2630     echo "$source_path" | grep -q '[[:blank:]]' &&
2631         die "Out of tree builds are impossible with whitespace in source path."
2632     test -e "$source_path/config.h" &&
2633         die "Out of tree builds are impossible with config.h in source dir."
2634 fi
2635
2636 for v in "$@"; do
2637     r=${v#*=}
2638     l=${v%"$r"}
2639     r=$(sh_quote "$r")
2640     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2641 done
2642
2643 find_things(){
2644     thing=$1
2645     pattern=$2
2646     file=$source_path/$3
2647     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2648 }
2649
2650 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2651 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2652 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2653 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2654 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2655 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2656 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2657 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2658 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2659
2660 find_things_extern(){
2661     thing=$1
2662     pattern=$2
2663     file=$source_path/$3
2664     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2665 }
2666
2667 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2668 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2669
2670 ALL_COMPONENTS="
2671     $BSF_LIST
2672     $DECODER_LIST
2673     $DEMUXER_LIST
2674     $ENCODER_LIST
2675     $FILTER_LIST
2676     $HWACCEL_LIST
2677     $INDEV_LIST
2678     $MUXER_LIST
2679     $OUTDEV_LIST
2680     $PARSER_LIST
2681     $PROTOCOL_LIST
2682 "
2683
2684 for n in $COMPONENT_LIST; do
2685     v=$(toupper ${n%s})_LIST
2686     eval enable \$$v
2687     eval ${n}_if_any="\$$v"
2688 done
2689
2690 enable $ARCH_EXT_LIST
2691
2692 die_unknown(){
2693     echo "Unknown option \"$1\"."
2694     echo "See $0 --help for available options."
2695     exit 1
2696 }
2697
2698 print_3_columns() {
2699     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2700 }
2701
2702 show_list() {
2703     suffix=_$1
2704     shift
2705     echo $* | sed s/$suffix//g | print_3_columns
2706     exit 0
2707 }
2708
2709 rand_list(){
2710     IFS=', '
2711     set -- $*
2712     unset IFS
2713     for thing; do
2714         comp=${thing%:*}
2715         prob=${thing#$comp}
2716         prob=${prob#:}
2717         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2718         echo "prob ${prob:-0.5}"
2719         printf '%s\n' $comp
2720     done
2721 }
2722
2723 do_random(){
2724     action=$1
2725     shift
2726     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2727     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2728 }
2729
2730 for opt do
2731     optval="${opt#*=}"
2732     case "$opt" in
2733         --extra-ldflags=*)
2734             add_ldflags $optval
2735         ;;
2736         --extra-ldexeflags=*)
2737             add_ldexeflags $optval
2738         ;;
2739         --extra-libs=*)
2740             add_extralibs $optval
2741         ;;
2742         --disable-devices)
2743             disable $INDEV_LIST $OUTDEV_LIST
2744         ;;
2745         --enable-debug=*)
2746             debuglevel="$optval"
2747         ;;
2748         --disable-programs)
2749             disable $PROGRAM_LIST
2750         ;;
2751         --disable-everything)
2752             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2753         ;;
2754         --disable-all)
2755             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2756             disable $LIBRARY_LIST $PROGRAM_LIST doc
2757         ;;
2758         --enable-random|--disable-random)
2759             action=${opt%%-random}
2760             do_random ${action#--} $COMPONENT_LIST
2761         ;;
2762         --enable-random=*|--disable-random=*)
2763             action=${opt%%-random=*}
2764             do_random ${action#--} $optval
2765         ;;
2766         --enable-*=*|--disable-*=*)
2767             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2768             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2769             eval list=\$$(toupper $thing)_LIST
2770             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2771             $action $(filter "$name" $list)
2772         ;;
2773         --enable-avserver|--disable-avserver*)
2774             warn "avserver has been removed, the ${opt} option is only"\
2775                  "provided for compatibility and will be removed in the future"
2776         ;;
2777         --enable-?*|--disable-?*)
2778             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2779             if is_in $option $COMPONENT_LIST; then
2780                 test $action = disable && action=unset
2781                 eval $action \$$(toupper ${option%s})_LIST
2782             elif is_in $option $CMDLINE_SELECT; then
2783                 $action $option
2784             else
2785                 die_unknown $opt
2786             fi
2787         ;;
2788         --list-*)
2789             NAME="${opt#--list-}"
2790             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2791             NAME=${NAME%s}
2792             eval show_list $NAME \$$(toupper $NAME)_LIST
2793         ;;
2794         --help|-h) show_help
2795         ;;
2796         --quiet|-q) quiet=yes
2797         ;;
2798         *)
2799             optname="${opt%%=*}"
2800             optname="${optname#--}"
2801             optname=$(echo "$optname" | sed 's/-/_/g')
2802             if is_in $optname $CMDLINE_SET; then
2803                 eval $optname='$optval'
2804             elif is_in $optname $CMDLINE_APPEND; then
2805                 append $optname "$optval"
2806             else
2807                 die_unknown $opt
2808             fi
2809         ;;
2810     esac
2811 done
2812
2813 for e in $env; do
2814     eval "export $e"
2815 done
2816
2817 disabled logging && logfile=/dev/null
2818
2819 # Die early if licensing-related configure options are incompatible.
2820 die_license_disabled() {
2821     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2822 }
2823
2824 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2825 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2826 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2827
2828 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2829
2830 # Disable all the library-specific components if the library itself
2831 # is disabled, see AVCODEC_LIST and following _LIST variables.
2832
2833 disable_components(){
2834     disabled ${1} && disable $(
2835         eval components="\$$(toupper ${1})_COMPONENTS"
2836         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2837     )
2838 }
2839
2840 map 'disable_components $v' $LIBRARY_LIST
2841
2842 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2843 set >> $logfile
2844
2845 case "$toolchain" in
2846     *-asan)
2847         cc_default="${toolchain%-asan}"
2848         add_cflags  -fsanitize=address
2849         add_ldflags -fsanitize=address
2850     ;;
2851     *-msan)
2852         cc_default="${toolchain%-msan}"
2853         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2854         add_ldflags -fsanitize=memory
2855     ;;
2856     *-tsan)
2857         cc_default="${toolchain%-tsan}"
2858         add_cflags  -fsanitize=thread -fPIE
2859         add_ldflags -fsanitize=thread -pie
2860         case "$toolchain" in
2861             gcc-tsan)
2862                 add_cflags  -fPIC
2863                 add_ldflags -fPIC
2864                 ;;
2865         esac
2866     ;;
2867     *-usan)
2868         cc_default="${toolchain%-usan}"
2869         add_cflags  -fsanitize=undefined
2870         add_ldflags -fsanitize=undefined
2871         case "$toolchain" in
2872             clang-usan)
2873                 add_cflags -O1
2874                 ;;
2875         esac
2876     ;;
2877     valgrind-*)
2878         target_exec_default="valgrind"
2879         case "$toolchain" in
2880             valgrind-massif)
2881                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
2882                 ;;
2883             valgrind-memcheck)
2884                 target_exec_args="--track-origins=yes --leak-check=full"
2885                 ;;
2886         esac
2887     ;;
2888     msvc)
2889         # Check whether the current MSVC version needs the C99 converter.
2890         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2891         # support enough of C99 to build libav. Default to the new
2892         # behaviour if the regexp was unable to match anything, since this
2893         # successfully parses the version number of existing supported
2894         # versions that require the converter (MSVC 2010 and 2012).
2895         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2896         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2897             cc_default="cl"
2898         else
2899             cc_default="c99wrap cl"
2900         fi
2901         ld_default="$source_path/compat/windows/mslink"
2902         nm_default="dumpbin -symbols"
2903         ar_default="lib"
2904         case "$arch" in
2905         arm*)
2906             as_default="armasm"
2907             ;;
2908         esac
2909         target_os_default="win32"
2910         # Use a relative path for TMPDIR. This makes sure all the
2911         # ffconf temp files are written with a relative path, avoiding
2912         # issues with msys/win32 path conversion for MSVC parameters
2913         # such as -Fo<file> or -out:<file>.
2914         TMPDIR=.
2915     ;;
2916     icl)
2917         cc_default="icl"
2918         ld_default="xilink"
2919         nm_default="dumpbin -symbols"
2920         ar_default="xilib"
2921         target_os_default="win32"
2922         TMPDIR=.
2923     ;;
2924     gcov)
2925         add_cflags  -fprofile-arcs -ftest-coverage
2926         add_ldflags -fprofile-arcs -ftest-coverage
2927     ;;
2928     llvm-cov)
2929         add_cflags -fprofile-arcs -ftest-coverage
2930         add_ldflags --coverage
2931     ;;
2932     hardened)
2933         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
2934         add_cflags   -fno-strict-overflow -fstack-protector-all
2935         add_ldflags  -Wl,-z,relro -Wl,-z,now
2936     ;;
2937     ?*)
2938         die "Unknown toolchain $toolchain"
2939     ;;
2940 esac
2941
2942 test -n "$cross_prefix" && enable cross_compile
2943
2944 if enabled cross_compile; then
2945     test -n "$arch" && test -n "$target_os" ||
2946         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
2947 fi
2948
2949 ar_default="${cross_prefix}${ar_default}"
2950 cc_default="${cross_prefix}${cc_default}"
2951 occ_default="${cross_prefix}${occ_default}"
2952 nm_default="${cross_prefix}${nm_default}"
2953 pkg_config_default="${cross_prefix}${pkg_config_default}"
2954 ranlib="${cross_prefix}${ranlib}"
2955 strip="${cross_prefix}${strip}"
2956
2957 sysinclude_default="${sysroot}/usr/include"
2958
2959 set_default arch cc pkg_config sysinclude target_exec target_os
2960 enabled cross_compile || host_cc_default=$cc
2961 set_default host_cc
2962
2963 if ! $pkg_config --version >/dev/null 2>&1; then
2964     warn "$pkg_config not found, library detection may fail."
2965     pkg_config=false
2966 fi
2967
2968 exesuf() {
2969     case $1 in
2970         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2971     esac
2972 }
2973
2974 EXESUF=$(exesuf $target_os)
2975 HOSTEXESUF=$(exesuf $host_os)
2976
2977 # set temporary file name
2978 : ${TMPDIR:=$TEMPDIR}
2979 : ${TMPDIR:=$TMP}
2980 : ${TMPDIR:=/tmp}
2981
2982 if ! check_cmd mktemp -u XXXXXX; then
2983     # simple replacement for missing mktemp
2984     # NOT SAFE FOR GENERAL USE
2985     mktemp(){
2986         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2987         echo "$tmpname"
2988         mkdir "$tmpname"
2989     }
2990 fi
2991
2992 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
2993     die "Unable to create temporary directory in $TMPDIR."
2994
2995 tmpfile(){
2996     tmp="${AVTMPDIR}/test"$2
2997     (set -C; exec > $tmp) 2> /dev/null ||
2998         die "Unable to create temporary file in $AVTMPDIR."
2999     eval $1=$tmp
3000 }
3001
3002 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3003 trap 'exit 2' INT
3004
3005 tmpfile TMPASM .asm
3006 tmpfile TMPC   .c
3007 tmpfile TMPE   $EXESUF
3008 tmpfile TMPH   .h
3009 tmpfile TMPO   .o
3010 tmpfile TMPS   .S
3011 tmpfile TMPSH  .sh
3012 tmpfile TMPV   .ver
3013
3014 unset -f mktemp
3015
3016 chmod +x $TMPE
3017
3018 # make sure we can execute files in $TMPDIR
3019 cat > $TMPSH 2>> $logfile <<EOF
3020 #! /bin/sh
3021 EOF
3022 chmod +x $TMPSH >> $logfile 2>&1
3023 if ! $TMPSH >> $logfile 2>&1; then
3024     cat <<EOF
3025 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3026 variable to another directory and make sure that it is not mounted noexec.
3027 EOF
3028     die "Sanity test failed."
3029 fi
3030
3031 armasm_flags(){
3032     for flag; do
3033         case $flag in
3034             # Filter out MSVC cl.exe options from cflags that shouldn't
3035             # be passed to gas-preprocessor
3036             -M[TD]*)                                            ;;
3037             *)                  echo $flag                      ;;
3038         esac
3039    done
3040 }
3041
3042 ccc_flags(){
3043     for flag; do
3044         case $flag in
3045             -std=c99)           echo -c99                       ;;
3046             -mcpu=*)            echo -arch ${flag#*=}           ;;
3047             -mieee)             echo -ieee                      ;;
3048             -O*|-fast)          echo $flag                      ;;
3049             -fno-math-errno)    echo -assume nomath_errno       ;;
3050             -g)                 echo -g3                        ;;
3051             -Wall)              echo -msg_enable level2         ;;
3052             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3053             -Wl,*)              echo $flag                      ;;
3054             -f*|-W*)                                            ;;
3055             *)                  echo $flag                      ;;
3056         esac
3057    done
3058 }
3059
3060 cparser_flags(){
3061     for flag; do
3062         case $flag in
3063             -Wno-switch)             echo -Wno-switch-enum ;;
3064             -Wno-format-zero-length) ;;
3065             -Wdisabled-optimization) ;;
3066             -Wno-pointer-sign)       echo -Wno-other ;;
3067             *)                       echo $flag ;;
3068         esac
3069     done
3070 }
3071
3072 msvc_common_flags(){
3073     for flag; do
3074         case $flag in
3075             # In addition to specifying certain flags under the compiler
3076             # specific filters, they must be specified here as well or else the
3077             # generic catch all at the bottom will print the original flag.
3078             -Wall)                ;;
3079             -Wextra)              ;;
3080             -std=c99)             ;;
3081             # Common flags
3082             -fomit-frame-pointer) ;;
3083             -g)                   echo -Z7 ;;
3084             -fno-math-errno)      ;;
3085             -fno-common)          ;;
3086             -fno-signed-zeros)    ;;
3087             -fPIC)                ;;
3088             -mthumb)              ;;
3089             -march=*)             ;;
3090             -lz)                  echo zlib.lib ;;
3091             -lx264)               echo libx264.lib ;;
3092             -l*)                  echo ${flag#-l}.lib ;;
3093             -L*)                  echo -libpath:${flag#-L} ;;
3094             *)                    echo $flag ;;
3095         esac
3096     done
3097 }
3098
3099 msvc_flags(){
3100     msvc_common_flags "$@"
3101     for flag; do
3102         case $flag in
3103             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3104                                        -wd4554 ;;
3105             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3106                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3107                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3108                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3109         esac
3110     done
3111 }
3112
3113 icl_flags(){
3114     msvc_common_flags "$@"
3115     for flag; do
3116         case $flag in
3117             # Despite what Intel's documentation says -Wall, which is supported
3118             # on Windows, does enable remarks so disable them here.
3119             -Wall)                echo $flag -Qdiag-disable:remark ;;
3120             -std=c99)             echo -Qstd=c99 ;;
3121         esac
3122     done
3123 }
3124
3125 pgi_flags(){
3126     for flag; do
3127         case $flag in
3128             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3129             -fomit-frame-pointer) echo -Mnoframe ;;
3130             -g)                   echo -gopt ;;
3131             *)                    echo $flag ;;
3132         esac
3133     done
3134 }
3135
3136 suncc_flags(){
3137     for flag; do
3138         case $flag in
3139             -march=*|-mcpu=*)
3140                 case "${flag#*=}" in
3141                     native)                   echo -xtarget=native       ;;
3142                     v9|niagara)               echo -xarch=sparc          ;;
3143                     ultrasparc)               echo -xarch=sparcvis       ;;
3144                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3145                     i586|pentium)             echo -xchip=pentium        ;;
3146                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3147                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3148                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3149                     pentium4*)          echo -xtarget=pentium4           ;;
3150                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3151                     *-sse3)             echo -xarch=sse3                 ;;
3152                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3153                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3154                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3155                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3156                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3157                     k8|opteron|athlon64|athlon-fx)
3158                                                echo -xarch=sse2a         ;;
3159                     athlon*)                   echo -xarch=pentium_proa  ;;
3160                 esac
3161                 ;;
3162             -std=c99)             echo -xc99              ;;
3163             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3164             -fPIC)                echo -KPIC -xcode=pic32 ;;
3165             -W*,*)                echo $flag              ;;
3166             -f*-*|-W*|-mimpure-text)                      ;;
3167             -shared)              echo -G                 ;;
3168             *)                    echo $flag              ;;
3169         esac
3170     done
3171 }
3172
3173 tms470_flags(){
3174     for flag; do
3175         case $flag in
3176             -march=*|-mcpu=*)
3177                 case "${flag#*=}" in
3178                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3179                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3180                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3181                     armv6*|arm11*)          echo -mv=6   ;;
3182                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3183                                             echo -mv=5e  ;;
3184                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3185                 esac
3186                 ;;
3187             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3188             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3189             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3190             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3191             -msoft-float)   echo --float_support=vfplib       ;;
3192             -O[0-3]|-mf=*)  echo $flag                        ;;
3193             -g)             echo -g -mn                       ;;
3194             -pds=*)         echo $flag                        ;;
3195             -D*|-I*)        echo $flag                        ;;
3196             --gcc|--abi=*)  echo $flag                        ;;
3197             -me)            echo $flag                        ;;
3198         esac
3199     done
3200 }
3201
3202 probe_cc(){
3203     pfx=$1
3204     _cc=$2
3205
3206     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3207     unset _ld_o _ldflags _ld_lib _ld_path
3208     unset _depflags _DEPCMD _DEPFLAGS
3209     _flags_filter=echo
3210
3211     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3212         _type=llvm_gcc
3213         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3214         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3215         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3216         _cflags_speed='-O3'
3217         _cflags_size='-Os'
3218     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3219         _type=gcc
3220         gcc_version=$($_cc --version | head -n1)
3221         gcc_basever=$($_cc -dumpversion)
3222         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3223         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3224         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3225         if ! $_cc -dumpversion | grep -q '^2\.'; then
3226             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3227         fi
3228         _cflags_speed='-O3'
3229         _cflags_size='-Os'
3230     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3231         _type=icc
3232         _ident=$($_cc --version | head -n1)
3233         _depflags='-MMD'
3234         _cflags_speed='-O3'
3235         _cflags_size='-Os'
3236         _cflags_noopt='-O1'
3237     elif $_cc -v 2>&1 | grep -q xlc; then
3238         _type=xlc
3239         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3240         _cflags_speed='-O5'
3241         _cflags_size='-O5 -qcompact'
3242     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3243         _type=ccc
3244         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3245         _DEPFLAGS='-M'
3246         _cflags_speed='-fast'
3247         _cflags_size='-O1'
3248         _flags_filter=ccc_flags
3249     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3250         test -d "$sysroot" || die "No valid sysroot specified."
3251         _type=armcc
3252         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3253         armcc_conf="$PWD/armcc.conf"
3254         $_cc --arm_linux_configure                 \
3255              --arm_linux_config_file="$armcc_conf" \
3256              --configure_sysroot="$sysroot"        \
3257              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3258              die "Error creating armcc configuration file."
3259         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3260         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3261         as_default="${cross_prefix}gcc"
3262         _depflags='-MMD'
3263         _cflags_speed='-O3'
3264         _cflags_size='-Os'
3265     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3266         _type=tms470
3267         _ident=$($_cc -version | head -n1 | tr -s ' ')
3268         _flags='--gcc --abi=eabi -me'
3269         _cc_e='-ppl -fe=$@'
3270         _cc_o='-fe=$@'
3271         _depflags='-ppa -ppd=$(@:.o=.d)'
3272         _cflags_speed='-O3 -mf=5'
3273         _cflags_size='-O3 -mf=2'
3274         _flags_filter=tms470_flags
3275     elif $_cc -v 2>&1 | grep -q clang; then
3276         _type=clang
3277         _ident=$($_cc --version 2>/dev/null | head -n1)
3278         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3279         _cflags_speed='-O3'
3280         _cflags_size='-Os'
3281     elif $_cc -V 2>&1 | grep -q Sun; then
3282         _type=suncc
3283         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3284         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3285         _DEPFLAGS='-xM1 -xc99'
3286         _ldflags='-std=c99'
3287         _cflags_speed='-O5'
3288         _cflags_size='-O5 -xspace'
3289         _flags_filter=suncc_flags
3290     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3291         _type=pathscale
3292         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3293         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3294         _cflags_speed='-O2'
3295         _cflags_size='-Os'
3296         _flags_filter='filter_out -Wdisabled-optimization'
3297     elif $_cc -v 2>&1 | grep -q Open64; then
3298         _type=open64
3299         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3300         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3301         _cflags_speed='-O2'
3302         _cflags_size='-Os'
3303         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3304     elif $_cc -V 2>&1 | grep -q Portland; then
3305         _type=pgi
3306         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3307         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3308         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3309         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3310         _cflags_noopt="-O1"
3311         _flags_filter=pgi_flags
3312     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3313         _type=armasm
3314         _ident=$($_cc | head -n1)
3315         # 4509: "This form of conditional instruction is deprecated"
3316         _flags="-nologo -ignore 4509"
3317         _flags_filter=armasm_flags
3318     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3319         _type=msvc
3320         _ident=$($_cc 2>&1 | head -n1)
3321         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3322         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3323         _cflags_speed="-O2"
3324         _cflags_size="-O1"
3325         _cflags_noopt="-O1"
3326         if $_cc -nologo- 2>&1 | grep -q Linker; then
3327             _ld_o='-out:$@'
3328         else
3329             _ld_o='-Fe$@'
3330         fi
3331         _cc_o='-Fo$@'
3332         _cc_e='-P -Fi$@'
3333         _flags_filter=msvc_flags
3334         _ld_lib='lib%.a'
3335         _ld_path='-libpath:'
3336         _flags='-nologo'
3337     elif $_cc 2>&1 | grep -q Intel; then
3338         _type=icl
3339         _ident=$($_cc 2>&1 | head -n1)
3340         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3341         # Not only is O3 broken on 13.x+ but it is slower on all previous
3342         # versions (tested) as well.
3343         _cflags_speed="-O2"
3344         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3345         if $_cc 2>&1 | grep -q Linker; then
3346             _ld_o='-out:$@'
3347         else
3348             _ld_o='-Fe$@'
3349         fi
3350         _cc_o='-Fo$@'
3351         _cc_e='-P'
3352         _flags_filter=icl_flags
3353         _ld_lib='lib%.a'
3354         _ld_path='-libpath:'
3355         # -Qdiag-error to make icl error when seeing certain unknown arguments
3356         _flags='-nologo -Qdiag-error:4044,10157'
3357         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3358         # with MSVC which enables it by default.
3359         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3360     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3361         # lld can emulate multiple different linkers; in ms link.exe mode,
3362         # the -? parameter gives the help output which contains an identifyable
3363         # string, while it gives an error in other modes.
3364         _type=lld-link
3365         # The link.exe mode doesn't have a switch for getting the version,
3366         # but we can force it back to gnu mode and get the version from there.
3367         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3368         _ld_o='-out:$@'
3369         _flags_filter=msvc_flags
3370         _ld_lib='lib%.a'
3371         _ld_path='-libpath:'
3372     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3373         _type=cparser
3374         _ident=$($_cc --version | head -n1)
3375         _depflags='-MMD'
3376         _cflags_speed='-O4'
3377         _cflags_size='-O2'
3378         _flags_filter=cparser_flags
3379     fi
3380
3381     eval ${pfx}_type=\$_type
3382     eval ${pfx}_ident=\$_ident
3383 }
3384
3385 set_ccvars(){
3386     eval ${1}_C=\${_cc_c-\${${1}_C}}
3387     eval ${1}_E=\${_cc_e-\${${1}_E}}
3388     eval ${1}_O=\${_cc_o-\${${1}_O}}
3389
3390     if [ -n "$_depflags" ]; then
3391         eval ${1}_DEPFLAGS=\$_depflags
3392     else
3393         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3394         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3395         eval DEP${1}FLAGS=\$_flags
3396     fi
3397 }
3398
3399 probe_cc cc "$cc"
3400 cflags_filter=$_flags_filter
3401 cflags_speed=$_cflags_speed
3402 cflags_size=$_cflags_size
3403 cflags_noopt=$_cflags_noopt
3404 add_cflags $_flags $_cflags
3405 cc_ldflags=$_ldflags
3406 set_ccvars CC
3407
3408 probe_cc hostcc "$host_cc"
3409 host_cflags_filter=$_flags_filter
3410 host_cflags_speed=$_cflags_speed
3411 add_host_cflags  $_flags $_cflags
3412 set_ccvars HOSTCC
3413
3414 test -n "$cc_type" && enable $cc_type ||
3415     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3416
3417 : ${as_default:=$cc}
3418 : ${objcc_default:=$cc}
3419 : ${dep_cc_default:=$cc}
3420 : ${ld_default:=$cc}
3421 : ${host_ld_default:=$host_cc}
3422 set_default ar as objcc dep_cc ld host_ld
3423
3424 probe_cc as "$as"
3425 asflags_filter=$_flags_filter
3426 add_asflags $_flags $_cflags
3427 set_ccvars AS
3428
3429 probe_cc objcc "$objcc"
3430 objcflags_filter=$_flags_filter
3431 add_objcflags $_flags $_cflags
3432 set_ccvars OBJC
3433
3434 probe_cc ld "$ld"
3435 ldflags_filter=$_flags_filter
3436 add_ldflags $_flags $_ldflags
3437 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3438 LD_O=${_ld_o-$LD_O}
3439 LD_LIB=${_ld_lib-$LD_LIB}
3440 LD_PATH=${_ld_path-$LD_PATH}
3441
3442 probe_cc hostld "$host_ld"
3443 host_ldflags_filter=$_flags_filter
3444 add_host_ldflags $_flags $_ldflags
3445 HOSTLD_O=${_ld_o-$HOSTLD_O}
3446
3447 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3448     probe_cc depcc "$dep_cc"
3449     CCDEP=${_DEPCMD:-$DEPCMD}
3450     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3451     DEPCCFLAGS=$_flags
3452 fi
3453
3454 if $ar 2>&1 | grep -q Microsoft; then
3455     arflags="-nologo"
3456     ar_o='-out:$@'
3457 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3458     arflags="rq"
3459     ar_o='$@'
3460 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3461     arflags='-Xany -r -c'
3462     ar_o='$@'
3463 else
3464     arflags="rc"
3465     ar_o='$@'
3466 fi
3467
3468 add_cflags $extra_cflags
3469 add_objcflags $extra_objcflags
3470 add_asflags $extra_cflags
3471
3472 if test -n "$sysroot"; then
3473     case "$cc_type" in
3474         gcc|llvm_gcc|clang)
3475             add_cppflags --sysroot="$sysroot"
3476             add_ldflags --sysroot="$sysroot"
3477         ;;
3478         tms470)
3479             add_cppflags -I"$sysinclude"
3480             add_ldflags  --sysroot="$sysroot"
3481         ;;
3482     esac
3483 fi
3484
3485 if test "$cpu" = host; then
3486     enabled cross_compile &&
3487         die "--cpu=host makes no sense when cross-compiling."
3488
3489     case "$cc_type" in
3490         gcc|llvm_gcc)
3491             check_native(){
3492                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3493                 sed -n "/cc1.*$1=/{
3494                             s/.*$1=\\([^ ]*\\).*/\\1/
3495                             p
3496                             q
3497                         }" $TMPE
3498             }
3499             cpu=$(check_native -march || check_native -mcpu)
3500         ;;
3501     esac
3502
3503     test "${cpu:-host}" = host &&
3504         die "--cpu=host not supported with compiler $cc"
3505 fi
3506
3507 # Deal with common $arch aliases
3508 case "$arch" in
3509     aarch64|arm64)
3510         arch="aarch64"
3511     ;;
3512     arm*)
3513         arch="arm"
3514     ;;
3515     mips*|IP*)
3516         case "$arch" in
3517         *el)
3518             add_cppflags -EL
3519             add_ldflags -EL
3520         ;;
3521         *eb)
3522             add_cppflags -EB
3523             add_ldflags -EB
3524         ;;
3525         esac
3526         arch="mips"
3527     ;;
3528     parisc*|hppa*)
3529         arch="parisc"
3530     ;;
3531     "Power Macintosh"|ppc*|powerpc*)
3532         arch="ppc"
3533     ;;
3534     s390|s390x)
3535         arch="s390"
3536     ;;
3537     sh4|sh)
3538         arch="sh4"
3539     ;;
3540     sun4u|sparc*)
3541         arch="sparc"
3542     ;;
3543     tilegx|tile-gx)
3544         arch="tilegx"
3545     ;;
3546     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3547         arch="x86"
3548     ;;
3549 esac
3550
3551 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3552 enable $arch
3553
3554 # Add processor-specific flags
3555 if enabled aarch64; then
3556
3557     case $cpu in
3558         armv*)
3559             cpuflags="-march=$cpu"
3560         ;;
3561         *)
3562             cpuflags="-mcpu=$cpu"
3563         ;;
3564     esac
3565
3566 elif enabled alpha; then
3567
3568     cpuflags="-mcpu=$cpu"
3569
3570 elif enabled arm; then
3571
3572     check_arm_arch() {
3573         check_cpp_condition stddef.h \
3574             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3575             $cpuflags
3576     }
3577
3578     probe_arm_arch() {
3579         if   check_arm_arch 4;        then echo armv4
3580         elif check_arm_arch 4T;       then echo armv4t
3581         elif check_arm_arch 5;        then echo armv5
3582         elif check_arm_arch 5E;       then echo armv5e
3583         elif check_arm_arch 5T;       then echo armv5t
3584         elif check_arm_arch 5TE;      then echo armv5te
3585         elif check_arm_arch 5TEJ;     then echo armv5te
3586         elif check_arm_arch 6;        then echo armv6
3587         elif check_arm_arch 6J;       then echo armv6j
3588         elif check_arm_arch 6K;       then echo armv6k
3589         elif check_arm_arch 6Z;       then echo armv6z
3590         elif check_arm_arch 6ZK;      then echo armv6zk
3591         elif check_arm_arch 6T2;      then echo armv6t2
3592         elif check_arm_arch 7;        then echo armv7
3593         elif check_arm_arch 7A  7_A;  then echo armv7-a
3594         elif check_arm_arch 7S;       then echo armv7-a
3595         elif check_arm_arch 7R  7_R;  then echo armv7-r
3596         elif check_arm_arch 7M  7_M;  then echo armv7-m
3597         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3598         elif check_arm_arch 8A  8_A;  then echo armv8-a
3599         fi
3600     }
3601
3602     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3603
3604     case $cpu in
3605         armv*)
3606             cpuflags="-march=$cpu"
3607             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3608         ;;
3609         *)
3610             cpuflags="-mcpu=$cpu"
3611             case $cpu in
3612                 cortex-a*)                               subarch=armv7a  ;;
3613                 cortex-r*)                               subarch=armv7r  ;;
3614                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3615                 arm11*)                                  subarch=armv6   ;;
3616                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3617                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3618                 *)                             subarch=$(probe_arm_arch) ;;
3619             esac
3620         ;;
3621     esac
3622
3623     case "$subarch" in
3624         armv5t*)    enable fast_clz                ;;
3625         armv[6-8]*) enable fast_clz fast_unaligned ;;
3626     esac
3627
3628 elif enabled avr32; then
3629
3630     case $cpu in
3631         ap7[02]0[0-2])
3632             subarch="avr32_ap"
3633             cpuflags="-mpart=$cpu"
3634         ;;
3635         ap)
3636             subarch="avr32_ap"
3637             cpuflags="-march=$cpu"
3638         ;;
3639         uc3[ab]*)
3640             subarch="avr32_uc"
3641             cpuflags="-mcpu=$cpu"
3642         ;;
3643         uc)
3644             subarch="avr32_uc"
3645             cpuflags="-march=$cpu"
3646         ;;
3647     esac
3648
3649 elif enabled bfin; then
3650
3651     cpuflags="-mcpu=$cpu"
3652
3653 elif enabled mips; then
3654
3655     cpuflags="-march=$cpu"
3656
3657 elif enabled ppc; then
3658
3659     disable ldbrx
3660
3661     case $(tolower $cpu) in
3662         601|ppc601|powerpc601)
3663             cpuflags="-mcpu=601"
3664             disable altivec
3665         ;;
3666         603*|ppc603*|powerpc603*)
3667             cpuflags="-mcpu=603"
3668             disable altivec
3669         ;;
3670         604*|ppc604*|powerpc604*)
3671             cpuflags="-mcpu=604"
3672             disable altivec
3673         ;;
3674         g3|75*|ppc75*|powerpc75*)
3675             cpuflags="-mcpu=750"
3676             disable altivec
3677         ;;
3678         g4|745*|ppc745*|powerpc745*)
3679             cpuflags="-mcpu=7450"
3680             disable vsx
3681         ;;
3682         74*|ppc74*|powerpc74*)
3683             cpuflags="-mcpu=7400"
3684             disable vsx
3685         ;;
3686         g5|970|ppc970|powerpc970)
3687             cpuflags="-mcpu=970"
3688             disable vsx
3689         ;;
3690         power[3-6]*)
3691             cpuflags="-mcpu=$cpu"
3692             disable vsx
3693         ;;
3694         power[7-8]*)
3695             cpuflags="-mcpu=$cpu"
3696             enable ldbrx
3697         ;;
3698         cell)
3699             cpuflags="-mcpu=cell"
3700             enable ldbrx
3701             disable vsx
3702         ;;
3703         e500mc)
3704             cpuflags="-mcpu=e500mc"
3705             disable altivec
3706         ;;
3707         e500v2)
3708             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3709             disable altivec
3710             disable dcbzl
3711         ;;
3712         e500)
3713             cpuflags="-mcpu=8540 -mhard-float"
3714             disable altivec
3715             disable dcbzl
3716         ;;
3717     esac
3718
3719 elif enabled sparc; then
3720
3721     case $cpu in
3722         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3723             cpuflags="-mcpu=$cpu"
3724         ;;
3725         ultrasparc*|niagara[234])
3726             cpuflags="-mcpu=$cpu"
3727         ;;
3728     esac
3729
3730 elif enabled x86; then
3731
3732     case $cpu in
3733         i[345]86|pentium)
3734             cpuflags="-march=$cpu"
3735             disable i686
3736             disable mmx
3737         ;;
3738         # targets that do NOT support nopl and conditional mov (cmov)
3739         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3740             cpuflags="-march=$cpu"
3741             disable i686
3742         ;;
3743         # targets that do support nopl and conditional mov (cmov)
3744         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3745             cpuflags="-march=$cpu"
3746             enable i686
3747             enable fast_cmov
3748         ;;
3749         # targets that do support conditional mov but on which it's slow
3750         pentium4|pentium4m|prescott|nocona)
3751             cpuflags="-march=$cpu"
3752             enable i686
3753             disable fast_cmov
3754         ;;
3755     esac
3756
3757 fi
3758
3759 if [ "$cpu" != generic ]; then
3760     add_cflags  $cpuflags
3761     add_asflags $cpuflags
3762     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3763 fi
3764
3765 # compiler sanity check
3766 check_exec <<EOF
3767 int main(void){ return 0; }
3768 EOF
3769 if test "$?" != 0; then
3770     echo "$cc is unable to create an executable file."
3771     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3772         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3773         echo "Only do this if you know what cross compiling means."
3774     fi
3775     die "C compiler test failed."
3776 fi
3777
3778 add_cppflags -D_ISOC99_SOURCE
3779
3780 # some compilers silently accept -std=c11, so we also need to check that the
3781 # version macro is defined properly
3782 check_cpp_condition stdlib.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
3783     add_cflags -std=c11 ||
3784     check_cflags -std=c99
3785
3786 check_cppflags -D_FILE_OFFSET_BITS=64
3787 check_cppflags -D_LARGEFILE_SOURCE
3788
3789 add_host_cppflags -D_ISOC99_SOURCE
3790 check_host_cflags -std=c99
3791 check_host_cflags -Wall
3792 check_host_cflags $host_cflags_speed
3793
3794 check_64bit(){
3795     arch32=$1
3796     arch64=$2
3797     expr=$3
3798     check_code cc "" "int test[2*($expr) - 1]" &&
3799         subarch=$arch64 || subarch=$arch32
3800 }
3801
3802 case "$arch" in
3803     aarch64|alpha|ia64)
3804         spic=$shared
3805     ;;
3806     mips)
3807         check_64bit mips mips64 '_MIPS_SIM > 1'
3808         spic=$shared
3809     ;;
3810     parisc)
3811         check_64bit parisc parisc64 'sizeof(void *) > 4'
3812         spic=$shared
3813     ;;
3814     ppc)
3815         check_64bit ppc ppc64 'sizeof(void *) > 4'
3816         spic=$shared
3817     ;;
3818     s390)
3819         check_64bit s390 s390x 'sizeof(void *) > 4'
3820         spic=$shared
3821     ;;
3822     sparc)
3823         check_64bit sparc sparc64 'sizeof(void *) > 4'
3824         spic=$shared
3825     ;;
3826     x86)
3827         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3828         if test "$subarch" = "x86_64"; then
3829             spic=$shared
3830         fi
3831     ;;
3832 esac
3833
3834 enable $subarch
3835 enabled spic && enable_weak pic
3836
3837 # OS specific
3838 case $target_os in
3839     aix)
3840         SHFLAGS=-shared
3841         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3842         enabled shared && add_ldflags -Wl,-brtl
3843         ;;
3844     android)
3845         disable symver
3846         enable section_data_rel_ro
3847         SLIB_INSTALL_NAME='$(SLIBNAME)'
3848         SLIB_INSTALL_LINKS=
3849         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3850         ;;
3851     haiku)
3852         prefix_default="/boot/common"
3853         network_extralibs="-lnetwork"
3854         host_extralibs=
3855         ;;
3856     sunos)
3857         SHFLAGS='-shared -Wl,-h,$$(@F)'
3858         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3859         network_extralibs="-lsocket -lnsl"
3860         # When using suncc to build, the Solaris linker will mark
3861         # an executable with each instruction set encountered by
3862         # the Solaris assembler.  As our libraries contain their own
3863         # guards for processor-specific code, instead suppress
3864         # generation of the HWCAPS ELF section on Solaris x86 only.
3865         enabled_all suncc x86 &&
3866             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3867             add_ldflags -Wl,-M,mapfile
3868         nm_default='nm -P -g'
3869         version_script='-M'
3870         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3871         ;;
3872     netbsd)
3873         disable symver
3874         oss_indev_extralibs="-lossaudio"
3875         oss_outdev_extralibs="-lossaudio"
3876         ;;
3877     openbsd|bitrig)
3878         disable symver
3879         SHFLAGS='-shared'
3880         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3881         SLIB_INSTALL_LINKS=
3882         oss_indev_extralibs="-lossaudio"
3883         oss_outdev_extralibs="-lossaudio"
3884         ;;
3885     dragonfly)
3886         disable symver
3887         ;;
3888     freebsd)
3889         ;;
3890     bsd/os)
3891         add_extralibs -lpoll -lgnugetopt
3892         ;;
3893     darwin)
3894         enabled ppc && add_asflags -force_cpusubtype_ALL
3895         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3896         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3897         add_ldflags -Wl,-dynamic,-search_paths_first
3898         SLIBSUF=".dylib"
3899         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3900         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3901         objformat="macho"
3902         enabled x86_64 && objformat="macho64"
3903         enabled_any pic shared ||
3904             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3905         check_header dispatch/dispatch.h &&
3906             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3907         ;;
3908     msys*)
3909         die "Native MSYS builds are discouraged, please use the MINGW environment."
3910         ;;
3911     mingw32*|mingw64*)
3912         if test $target_os = "mingw32ce"; then
3913             disable network
3914         else
3915             target_os=mingw32
3916         fi
3917         LIBTARGET=i386
3918         if enabled x86_64; then
3919             LIBTARGET="i386:x86-64"
3920         elif enabled arm; then
3921             LIBTARGET=arm-wince
3922         fi
3923         check_ldflags -Wl,--nxcompat
3924         check_ldflags -Wl,--dynamicbase
3925         shlibdir_default="$bindir_default"
3926         SLIBPREF=""
3927         SLIBSUF=".dll"
3928         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3929         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3930         SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3931         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3932         SLIB_INSTALL_LINKS=
3933         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3934         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3935         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3936         objformat="win32"
3937         dlltool="${cross_prefix}dlltool"
3938         ranlib=:
3939         enable dos_paths
3940         ;;
3941     win32|win64)
3942         disable symver
3943         if enabled shared; then
3944             # Link to the import library instead of the normal static library
3945             # for shared libs.
3946             LD_LIB='%.lib'
3947             # Cannot build both shared and static libs with MSVC or icl.
3948             disable static
3949         fi
3950         shlibdir_default="$bindir_default"
3951         SLIBPREF=""
3952         SLIBSUF=".dll"
3953         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3954         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3955         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3956         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3957         SLIB_INSTALL_LINKS=
3958         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3959         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3960         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3961         objformat="win32"
3962         ranlib=:
3963         enable dos_paths
3964         ;;
3965     cygwin*)
3966         target_os=cygwin
3967         shlibdir_default="$bindir_default"
3968         SLIBPREF="cyg"
3969         SLIBSUF=".dll"
3970         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3971         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3972         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3973         SLIB_INSTALL_LINKS=
3974         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
3975         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
3976         objformat="win32"
3977         enable dos_paths
3978         ;;
3979     *-dos|freedos|opendos)
3980         network_extralibs="-lsocket"
3981         objformat="coff"
3982         enable dos_paths
3983         add_cppflags -U__STRICT_ANSI__
3984         ;;
3985     linux)
3986         enable dv1394
3987         enable section_data_rel_ro
3988         ;;
3989     irix*)
3990         target_os=irix
3991         ranlib="echo ignoring ranlib"
3992         ;;
3993     os/2*)
3994         ln_s="cp -f"
3995         objformat="aout"
3996         add_cppflags -D_GNU_SOURCE
3997         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
3998         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3999         LIBSUF="_s.a"
4000         SLIBPREF=""
4001         SLIBSUF=".dll"
4002         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4003         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4004         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4005             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4006             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4007             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4008             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4009         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4010             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4011         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4012         enable dos_paths
4013         ;;
4014     gnu/kfreebsd)
4015         add_cppflags -D_BSD_SOURCE
4016         ;;
4017     gnu)
4018         ;;
4019     qnx)
4020         add_cppflags -D_QNX_SOURCE
4021         network_extralibs="-lsocket"
4022         ;;
4023     symbian)
4024         SLIBSUF=".dll"
4025         enable dos_paths
4026         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4027         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4028         add_ldflags -Wl,--target1-abs,--no-undefined \
4029                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4030                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4031         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4032                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4033                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4034         ;;
4035     osf1)
4036         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4037         ;;
4038     minix)
4039         ;;
4040     none)
4041         ;;
4042     *)
4043         die "Unknown OS '$target_os'."
4044         ;;
4045 esac
4046
4047 # determine libc flavour
4048
4049 probe_libc(){
4050     pfx=$1
4051     pfx_no_=${pfx%_}
4052     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4053     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4054         eval ${pfx}libc_type=uclibc
4055         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4056     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4057         eval ${pfx}libc_type=glibc
4058         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4059     # MinGW headers can be installed on Cygwin, so check for newlib first.
4060     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4061         eval ${pfx}libc_type=newlib
4062         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4063     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4064     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4065         eval ${pfx}libc_type=mingw64
4066         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4067         eval test \$${pfx_no_}cc_type = "gcc" &&
4068             add_${pfx}cppflags -D__printf__=__gnu_printf__
4069     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4070          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4071         eval ${pfx}libc_type=mingw32
4072         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4073             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4074             die "ERROR: MinGW32 runtime version must be >= 3.15."
4075         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4076         check_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700__" &&
4077             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4078         eval test \$${pfx_no_}cc_type = "gcc" &&
4079             add_${pfx}cppflags -D__printf__=__gnu_printf__
4080     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
4081         eval ${pfx}libc_type=msvcrt
4082         if check_${pfx}cpp_condition crtversion.h "_VC_CRT_MAJOR_VERSION < 14"; then
4083             if [ "$pfx" = host_ ]; then
4084                 add_host_cppflags -Dsnprintf=_snprintf
4085             else
4086                 add_compat strtod.o strtod=avpriv_strtod
4087                 add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
4088                                              _snprintf=avpriv_snprintf  \
4089                                    &