w32pthreads: always use Vista+ API, drop XP support
[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:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [avbuild/config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix_default]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89   --enable-rpath           use rpath when linking programs (USE WITH CARE)
90
91 Licensing options:
92   --enable-gpl             allow use of GPL code, the resulting libs
93                            and binaries will be under GPL [no]
94   --enable-version3        upgrade (L)GPL to version 3 [no]
95   --enable-nonfree         allow use of nonfree code, the resulting libs
96                            and binaries will be unredistributable [no]
97
98 Configuration options:
99   --disable-static         do not build static libraries [no]
100   --enable-shared          build shared libraries [no]
101   --enable-small           optimize for size instead of speed
102   --enable-runtime-cpudetect detect CPU capabilities at runtime (bigger binary)
103   --enable-gray            enable full grayscale support (slower color)
104   --disable-swscale-alpha  disable alpha channel support in swscale
105   --disable-all            disable building components, libraries and programs
106
107 Program options:
108   --disable-programs       do not build command line programs
109   --disable-avconv         disable avconv build
110   --disable-avplay         disable avplay build
111   --disable-avprobe        disable avprobe build
112
113 Component options:
114   --disable-doc            do not build documentation
115   --disable-pod2man        do not build manual pages
116   --disable-texi2html      do not build HTML documentation
117   --disable-avdevice       disable libavdevice build
118   --disable-avcodec        disable libavcodec build
119   --disable-avformat       disable libavformat build
120   --disable-avutil         disable libavutil build
121   --disable-swscale        disable libswscale build
122   --disable-avfilter       disable video filter support [no]
123   --disable-avresample     disable libavresample build [no]
124   --disable-pthreads       disable pthreads [auto]
125   --disable-w32threads     disable Win32 threads [auto]
126   --disable-network        disable network support [no]
127   --disable-dct            disable DCT code
128   --disable-error-resilience disable error resilience code
129   --disable-lsp            disable LSP code
130   --disable-lzo            disable LZO decoder code
131   --disable-mdct           disable MDCT code
132   --disable-rdft           disable RDFT code
133   --disable-fft            disable FFT code
134   --disable-faan           disable floating point AAN (I)DCT code
135
136 Individual component options:
137   --disable-everything     disable all components listed below
138   --disable-encoder=NAME   disable encoder NAME
139   --enable-encoder=NAME    enable encoder NAME
140   --disable-encoders       disable all encoders
141   --disable-decoder=NAME   disable decoder NAME
142   --enable-decoder=NAME    enable decoder NAME
143   --disable-decoders       disable all decoders
144   --disable-hwaccel=NAME   disable hwaccel NAME
145   --enable-hwaccel=NAME    enable hwaccel NAME
146   --disable-hwaccels       disable all hwaccels
147   --disable-muxer=NAME     disable muxer NAME
148   --enable-muxer=NAME      enable muxer NAME
149   --disable-muxers         disable all muxers
150   --disable-demuxer=NAME   disable demuxer NAME
151   --enable-demuxer=NAME    enable demuxer NAME
152   --disable-demuxers       disable all demuxers
153   --enable-parser=NAME     enable parser NAME
154   --disable-parser=NAME    disable parser NAME
155   --disable-parsers        disable all parsers
156   --enable-bsf=NAME        enable bitstream filter NAME
157   --disable-bsf=NAME       disable bitstream filter NAME
158   --disable-bsfs           disable all bitstream filters
159   --enable-protocol=NAME   enable protocol NAME
160   --disable-protocol=NAME  disable protocol NAME
161   --disable-protocols      disable all protocols
162   --enable-indev=NAME      enable input device NAME
163   --disable-indev=NAME     disable input device NAME
164   --disable-indevs         disable input devices
165   --disable-devices        disable all devices
166   --enable-filter=NAME     enable filter NAME
167   --disable-filter=NAME    disable filter NAME
168   --disable-filters        disable all filters
169
170 External library support:
171
172   Using any of the following switches will allow Libav to link to the
173   corresponding external library. All the components depending on that library
174   will become enabled, if all their other dependencies are met and they are not
175   explicitly disabled. E.g. --enable-libwavpack will enable linking to
176   libwavpack and allow the libwavpack encoder to be built, unless it is
177   specifically disabled with --disable-encoder=libwavpack.
178
179   Note that only the system libraries are auto-detected. All the other external
180   libraries must be explicitly enabled.
181
182   Also note that the following help text describes the purpose of the libraries
183   themselves, not all their features will necessarily be usable by Libav.
184
185   --enable-avisynth          video frameserver
186   --enable-avxsynth          Linux version of AviSynth
187   --enable-bzlib             bzip2 compression [autodetect]
188   --enable-frei0r            video filtering plugins
189   --enable-gnutls            crypto
190   --enable-libaom            AV1 video encoding/decoding
191   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
192   --enable-libcdio           audio CD input
193   --enable-libdc1394         IEEE 1394/Firewire camera input
194   --enable-libdcadec         DCA audio decoding
195   --enable-libfaac           AAC audio encoding
196   --enable-libfdk-aac        AAC audio encoding/decoding
197   --enable-libfontconfig     font configuration and management
198   --enable-libfreetype       font rendering
199   --enable-libgsm            GSM audio encoding/decoding
200   --enable-libhdcd           HDCD decoding filter
201   --enable-libilbc           ILBC audio encoding/decoding
202   --enable-libjack           JACK audio sound server
203   --enable-libkvazaar        HEVC video encoding
204   --enable-libmp3lame        MP3 audio encoding
205   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
206   --enable-libopencore-amrwb AMR-WB audio decoding
207   --enable-libopencv         computer vision
208   --enable-libopenh264       H.264 video encoding/decoding
209   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
210   --enable-libopus           Opus audio encoding/decoding
211   --enable-libpulse          Pulseaudio sound server
212   --enable-librtmp           RTMP streaming
213   --enable-libschroedinger   Dirac video encoding/decoding
214   --enable-libsnappy         snappy compression
215   --enable-libspeex          Speex audio encoding/decoding
216   --enable-libsrt            Haivision SRT protocol
217   --enable-libtheora         Theora video encoding/decoding
218   --enable-libtwolame        MP2 audio encoding
219   --enable-libvo-aacenc      AAC audio encoding
220   --enable-libvo-amrwbenc    AMR-WB audio encoding
221   --enable-libvorbis         Vorbis audio encoding/decoding
222   --enable-libvpx            VP* video encoding/decoding
223   --enable-libwavpack        Wavpack audio encoding/decoding
224   --enable-libwebp           WebP image encoding/decoding
225   --enable-libx264           H.264 video encoding
226   --enable-libx265           HEVC video encoding
227   --enable-libxavs           Chinese AVS video encoding
228   --enable-libxcb            X window system protocol communication
229   --enable-libxcb-shm        X11 shm communication [auto]
230   --enable-libxcb-xfixes     X11 mouse rendering [auto]
231   --enable-libxvid           MPEG-4 ASP video encoding
232   --enable-openssl           crypto
233   --enable-zlib              compression [autodetect]
234
235   The following libraries provide various hardware acceleration features:
236   --enable-amf     AMF video encoding code [auto]
237   --enable-cuda    Nvidia CUDA (dynamically linked)
238   --enable-cuvid   Nvidia CUVID video decode acceleration
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 [$target_os]
260   --target-exec=CMD        command to run executables on target
261   --target-path=DIR        path to view of build directory on target
262   --target-samples=DIR     path to samples directory on target
263   --toolchain=NAME         set tool defaults according to NAME
264                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
265                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
266                            valgrind-massif, valgrind-memcheck,
267                            msvc, icl, gcov, llvm-cov, hardened)
268   --nm=NM                  use nm tool
269   --ar=AR                  use archive tool AR [$ar_default]
270   --as=AS                  use assembler AS [$as_default]
271   --cc=CC                  use C compiler CC [$cc_default]
272   --objcc=OCC              use ObjC compiler OCC [$cc_default]
273   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
274   --ld=LD                  use linker LD
275   --x86asmexe=X86ASM       use x86 assembler X86ASM
276   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
277   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
278   --host-cc=HOSTCC         use host C compiler HOSTCC
279   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
280   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
281   --host-ld=HOSTLD         use host linker HOSTLD
282   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
283   --host-libs=HLIBS        use libs HLIBS when linking for host
284   --host-os=OS             compiler host OS [$target_os]
285   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
286   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
287   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
288   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
289   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
290   --extra-libs=ELIBS       add ELIBS [$ELIBS]
291   --extra-version=STRING   version string suffix []
292   --optflags=OPTFLAGS      override optimization-related compiler flags
293   --enable-pic             build position-independent code
294   --enable-thumb           compile for Thumb instruction set
295   --enable-lto             use link-time optimization
296   --env="ENV=override"     override the environment variables
297
298 Advanced options (experts only):
299   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
300   --custom-allocator=NAME  use a supported custom allocator
301   --disable-symver         disable symbol versioning
302   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
303   --disable-safe-bitstream-reader
304                            disable buffer boundary checking in bitreaders
305                            (faster, but may crash)
306   --enable-sram            allow use of on-chip SRAM
307
308 Optimization options (experts only):
309   --disable-asm            disable all assembly optimizations
310   --disable-altivec        disable AltiVec optimizations
311   --disable-vsx            disable VSX optimizations
312   --disable-power8         disable POWER8 optimizations
313   --disable-amd3dnow       disable 3DNow! optimizations
314   --disable-amd3dnowext    disable 3DNow! extended optimizations
315   --disable-mmx            disable MMX optimizations
316   --disable-mmxext         disable MMXEXT optimizations
317   --disable-sse            disable SSE optimizations
318   --disable-sse2           disable SSE2 optimizations
319   --disable-sse3           disable SSE3 optimizations
320   --disable-ssse3          disable SSSE3 optimizations
321   --disable-sse4           disable SSE4 optimizations
322   --disable-sse42          disable SSE4.2 optimizations
323   --disable-avx            disable AVX optimizations
324   --disable-xop            disable XOP optimizations
325   --disable-fma3           disable FMA3 optimizations
326   --disable-fma4           disable FMA4 optimizations
327   --disable-avx2           disable AVX2 optimizations
328   --disable-armv5te        disable armv5te optimizations
329   --disable-armv6          disable armv6 optimizations
330   --disable-armv6t2        disable armv6t2 optimizations
331   --disable-vfp            disable VFP optimizations
332   --disable-neon           disable NEON optimizations
333   --disable-inline-asm     disable use of inline assembly
334   --disable-x86asm         disable use of standalone x86 assembly
335
336 Developer options (useful when working on Libav itself):
337   --disable-debug          disable debugging symbols
338   --enable-debug=LEVEL     set the debug level [$debuglevel]
339   --disable-optimizations  disable compiler optimizations
340   --enable-extra-warnings  enable more compiler warnings
341   --samples=PATH           location of test samples for FATE, if not set use
342                            \$LIBAV_SAMPLES at make invocation time.
343   --enable-neon-clobber-test check NEON registers for clobbering (should be
344                            used only for debugging purposes)
345   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
346                            should be used only for debugging purposes)
347   --disable-valgrind-backtrace do not print a backtrace under Valgrind
348                            (only applies to --disable-optimizations builds)
349   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
350                            in the name) of tests whose result is ignored
351
352 NOTE: Object files are built at the place where configure is launched.
353 EOF
354   exit 0
355 }
356
357 log(){
358     echo "$@" >> $logfile
359 }
360
361 log_file(){
362     log BEGIN $1
363     i=1
364     while read line; do
365         printf '%5s   %s\n' "${i}" "${line}"
366         i=$(($i+1))
367     done < $1 >> $logfile
368     log END $1
369 }
370
371 echolog(){
372     log "$@"
373     echo "$@"
374 }
375
376 warn(){
377     log "WARNING: $*"
378     WARNINGS="${WARNINGS}WARNING: $*\n"
379 }
380
381 die(){
382     echolog "$@"
383     cat <<EOF
384
385 If you think configure made a mistake, make sure you are using the latest
386 version from Git.  If the latest version fails, report the problem to the
387 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
388 EOF
389     if disabled logging; then
390         cat <<EOF
391 Rerun configure with logging enabled (do not use --disable-logging), and
392 include the log this produces with your report.
393 EOF
394     else
395         cat <<EOF
396 Include the log file "$logfile" produced by configure as this will help
397 solving the problem.
398 EOF
399     fi
400     exit 1
401 }
402
403 # Avoid locale weirdness, besides we really just want to translate ASCII.
404 toupper(){
405     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
406 }
407
408 tolower(){
409     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
410 }
411
412 c_escape(){
413     echo "$*" | sed 's/["\\]/\\\0/g'
414 }
415
416 sh_quote(){
417     v=$(echo "$1" | sed "s/'/'\\\\''/g")
418     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
419     echo "$v"
420 }
421
422 cleanws(){
423     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
424 }
425
426 filter(){
427     pat=$1
428     shift
429     for v; do
430         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
431     done
432 }
433
434 filter_out(){
435     pat=$1
436     shift
437     for v; do
438         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
439     done
440 }
441
442 map(){
443     m=$1
444     shift
445     for v; do eval $m; done
446 }
447
448 add_suffix(){
449     suffix=$1
450     shift
451     for v; do echo ${v}${suffix}; done
452 }
453
454 set_all(){
455     value=$1
456     shift
457     for var in $*; do
458         eval $var=$value
459     done
460 }
461
462 set_weak(){
463     value=$1
464     shift
465     for var; do
466         eval : \${$var:=$value}
467     done
468 }
469
470 sanitize_var_name(){
471     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
472 }
473
474 set_sanitized(){
475     var=$1
476     shift
477     eval $(sanitize_var_name "$var")='$*'
478 }
479
480 get_sanitized(){
481     eval echo \$$(sanitize_var_name "$1")
482 }
483
484 pushvar(){
485     for pvar in $*; do
486         eval level=\${${pvar}_level:=0}
487         eval ${pvar}_${level}="\$$pvar"
488         eval ${pvar}_level=$(($level+1))
489     done
490 }
491
492 popvar(){
493     for pvar in $*; do
494         eval level=\${${pvar}_level:-0}
495         test $level = 0 && continue
496         eval level=$(($level-1))
497         eval $pvar="\${${pvar}_${level}}"
498         eval ${pvar}_level=$level
499         eval unset ${pvar}_${level}
500     done
501 }
502
503 enable(){
504     set_all yes $*
505 }
506
507 disable(){
508     set_all no $*
509 }
510
511 enable_weak(){
512     set_weak yes $*
513 }
514
515 disable_weak(){
516     set_weak no $*
517 }
518
519 enable_sanitized(){
520     for var; do
521         enable $(sanitize_var_name $var)
522     done
523 }
524
525 disable_sanitized(){
526     for var; do
527         disable $(sanitize_var_name $var)
528     done
529 }
530
531 do_enable_deep(){
532     for var; do
533         enabled $var && continue
534         eval sel="\$${var}_select"
535         eval sgs="\$${var}_suggest"
536         pushvar var sgs
537         enable_deep $sel
538         popvar sgs
539         enable_deep_weak $sgs
540         popvar var
541     done
542 }
543
544 enable_deep(){
545     do_enable_deep $*
546     enable $*
547 }
548
549 enable_deep_weak(){
550     for var; do
551         disabled $var && continue
552         pushvar var
553         do_enable_deep $var
554         popvar var
555         enable_weak $var
556     done
557 }
558
559 enabled(){
560     test "${1#!}" = "$1" && op="=" || op="!="
561     eval test "x\$${1#!}" $op "xyes"
562 }
563
564 disabled(){
565     test "${1#!}" = "$1" && op="=" || op="!="
566     eval test "x\$${1#!}" $op "xno"
567 }
568
569 enabled_all(){
570     for opt; do
571         enabled $opt || return 1
572     done
573 }
574
575 disabled_all(){
576     for opt; do
577         disabled $opt || return 1
578     done
579 }
580
581 enabled_any(){
582     for opt; do
583         enabled $opt && return 0
584     done
585 }
586
587 disabled_any(){
588     for opt; do
589         disabled $opt && return 0
590     done
591     return 1
592 }
593
594 set_default(){
595     for opt; do
596         eval : \${$opt:=\$${opt}_default}
597     done
598 }
599
600 is_in(){
601     value=$1
602     shift
603     for var in $*; do
604         [ $var = $value ] && return 0
605     done
606     return 1
607 }
608
609 check_deps(){
610     for cfg; do
611         enabled ${cfg}_checking && die "Circular dependency for $cfg."
612         disabled ${cfg}_checking && continue
613         enable ${cfg}_checking
614
615         eval dep_all="\$${cfg}_deps"
616         eval dep_any="\$${cfg}_deps_any"
617         eval dep_con="\$${cfg}_conflict"
618         eval dep_sel="\$${cfg}_select"
619         eval dep_sgs="\$${cfg}_suggest"
620         eval dep_ifa="\$${cfg}_if"
621         eval dep_ifn="\$${cfg}_if_any"
622
623         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
624         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
625         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
626
627         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
628         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
629         enabled_all  $dep_all || disable $cfg
630         enabled_any  $dep_any || disable $cfg
631         disabled_all $dep_con || disable $cfg
632         disabled_any $dep_sel && disable $cfg
633
634         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
635
636         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
637             # filter out library deps, these do not belong in extralibs
638             is_in $dep $LIBRARY_LIST && continue
639             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
640         done
641
642         disable ${cfg}_checking
643     done
644 }
645
646 print_config(){
647     pfx=$1
648     files=$2
649     shift 2
650     map 'eval echo "$v \${$v:-no}"' "$@" |
651     awk "BEGIN { split(\"$files\", files) }
652         {
653             c = \"$pfx\" toupper(\$1);
654             v = \$2;
655             sub(/yes/, 1, v);
656             sub(/no/,  0, v);
657             for (f in files) {
658                 file = files[f];
659                 if (file ~ /\\.h\$/) {
660                     printf(\"#define %s %d\\n\", c, v) >>file;
661                 } else if (file ~ /\\.asm\$/) {
662                     printf(\"%%define %s %d\\n\", c, v) >>file;
663                 } else if (file ~ /\\.mak\$/) {
664                     n = -v ? \"\" : \"!\";
665                     printf(\"%s%s=yes\\n\", n, c) >>file;
666                 }
667             }
668         }"
669 }
670
671 print_enabled(){
672     suf=$1
673     shift
674     for v; do
675         enabled $v && printf "%s\n" ${v%$suf}
676     done
677 }
678
679 append(){
680     var=$1
681     shift
682     eval "$var=\"\$$var $*\""
683 }
684
685 prepend(){
686     var=$1
687     shift
688     eval "$var=\"$* \$$var\""
689 }
690
691 unique(){
692     var=$1
693     uniq_list=""
694     for tok in $(eval echo \$$var); do
695         uniq_list="$(filter_out $tok $uniq_list) $tok"
696     done
697     eval "$var=\"${uniq_list}\""
698 }
699
700 resolve(){
701     var=$1
702     tmpvar=
703     for entry in $(eval echo \$$var); do
704         tmpvar="$tmpvar $(eval echo \$${entry})"
705     done
706     eval "$var=\"${tmpvar}\""
707 }
708
709 add_cppflags(){
710     append CPPFLAGS "$@"
711 }
712
713 add_cflags(){
714     append CFLAGS $($cflags_filter "$@")
715 }
716
717 add_cflags_headers(){
718     append CFLAGS_HEADERS $($cflags_filter "$@")
719 }
720
721 add_asflags(){
722     append ASFLAGS $($asflags_filter "$@")
723 }
724
725 add_objcflags(){
726     append OBJCFLAGS $($objcflags_filter "$@")
727 }
728
729 add_ldflags(){
730     append LDFLAGS $($ldflags_filter "$@")
731 }
732
733 add_ldexeflags(){
734     append LDEXEFLAGS $($ldflags_filter "$@")
735 }
736
737 add_ldsoflags(){
738     append LDSOFLAGS $($ldflags_filter "$@")
739 }
740
741 add_stripflags(){
742     append STRIPFLAGS "$@"
743 }
744
745 add_extralibs(){
746     prepend extralibs $($ldflags_filter "$@")
747 }
748
749 add_host_cppflags(){
750     append host_cppflags "$@"
751 }
752
753 add_host_cflags(){
754     append host_cflags $($host_cflags_filter "$@")
755 }
756
757 add_host_ldflags(){
758     append host_ldflags $($host_ldflags_filter "$@")
759 }
760
761 add_compat(){
762     append compat_objs $1
763     shift
764     map 'add_cppflags -D$v' "$@"
765 }
766
767 test_cmd(){
768     log "$@"
769     "$@" >> $logfile 2>&1
770 }
771
772 cc_o(){
773     eval printf '%s\\n' $CC_O
774 }
775
776 cc_e(){
777     eval printf '%s\\n' $CC_E
778 }
779
780 test_cc(){
781     log test_cc "$@"
782     cat > $TMPC
783     log_file $TMPC
784     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
785 }
786
787 test_objcc(){
788     log test_objcc "$@"
789     cat > $TMPC
790     log_file $TMPC
791     test_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
792 }
793
794 test_cpp(){
795     log test_cpp "$@"
796     cat > $TMPC
797     log_file $TMPC
798     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
799 }
800
801 as_o(){
802     eval printf '%s\\n' $AS_O
803 }
804
805 test_as(){
806     log test_as "$@"
807     cat > $TMPS
808     log_file $TMPS
809     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
810 }
811
812 x86asm_o(){
813     eval printf '%s\\n' $X86ASM_O
814 }
815
816 test_x86asm(){
817     log test_x86asm "$@"
818     echo "$1" > $TMPASM
819     log_file $TMPASM
820     shift
821     test_cmd $x86asmexe $X86ASMFLAGS "$@" $(x86asm_o $TMPO) $TMPASM
822 }
823
824 check_cmd(){
825     log check_cmd "$@"
826     cmd=$1
827     disabled $cmd && return
828     disable $cmd
829     test_cmd $@ && enable $cmd
830 }
831
832 check_as(){
833     log check_as "$@"
834     name=$1
835     code=$2
836     shift 2
837     disable $name
838     test_as $@ <<EOF && enable $name
839 $code
840 EOF
841 }
842
843 check_inline_asm(){
844     log check_inline_asm "$@"
845     name="$1"
846     code="$2"
847     shift 2
848     disable $name
849     test_cc "$@" <<EOF && enable $name
850 void foo(void){ __asm__ volatile($code); }
851 EOF
852 }
853
854 check_insn(){
855     log check_insn "$@"
856     check_inline_asm ${1}_inline "$2"
857     check_as ${1}_external "$2"
858 }
859
860 check_x86asm(){
861     log check_x86asm "$@"
862     name=$1
863     shift
864     disable $name
865     test_x86asm "$@" && enable $name
866 }
867
868 ld_o(){
869     eval printf '%s\\n' $LD_O
870 }
871
872 test_ld(){
873     log test_ld "$@"
874     flags=$(filter_out '-l*' "$@")
875     libs=$(filter '-l*' "$@")
876     test_cc $($cflags_filter $flags) || return
877     flags=$($ldflags_filter $flags)
878     libs=$($ldflags_filter $libs)
879     test_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
880 }
881
882 check_ld(){
883     log check_ld "$@"
884     name=$1
885     shift
886     disable $name
887     test_ld $@ && enable $name
888 }
889
890 print_include(){
891     hdr=$1
892     test "${hdr%.h}" = "${hdr}" &&
893         echo "#include $hdr"    ||
894         echo "#include <$hdr>"
895 }
896
897 test_code(){
898     log test_code "$@"
899     check=$1
900     headers=$2
901     code=$3
902     shift 3
903     {
904         for hdr in $headers; do
905             print_include $hdr
906         done
907         echo "int main(void) { $code; return 0; }"
908     } | test_$check "$@"
909 }
910
911 check_cppflags(){
912     log check_cppflags "$@"
913     test_cpp "$@" <<EOF && add_cppflags "$@"
914 #include <stdlib.h>;
915 EOF
916 }
917
918 test_cflags(){
919     log test_cflags "$@"
920     set -- $($cflags_filter "$@")
921     test_cc "$@" <<EOF
922 int x;
923 EOF
924 }
925
926 check_cflags(){
927     log check_cflags "$@"
928     test_cflags "$@" && add_cflags "$@"
929 }
930
931 test_objcflags(){
932     log test_objcflags "$@"
933     set -- $($objcflags_filter "$@")
934     test_objcc "$@" <<EOF
935 int x;
936 EOF
937 }
938
939 check_objcflags(){
940     log check_objcflags "$@"
941     test_objcflags "$@" && add_objcflags "$@"
942 }
943
944 test_ldflags(){
945     log test_ldflags "$@"
946     set -- $($ldflags_filter "$@")
947     test_ld "$@" <<EOF
948 int main(void){ return 0; }
949 EOF
950 }
951
952 check_ldflags(){
953     log check_ldflags "$@"
954     test_ldflags "$@" && add_ldflags "$@"
955 }
956
957 test_stripflags(){
958     log test_stripflags "$@"
959     # call test_cc to get a fresh TMPO
960     test_cc <<EOF
961 int main(void) { return 0; }
962 EOF
963     test_cmd $strip $STRIPFLAGS "$@" $TMPO
964 }
965
966 check_stripflags(){
967     log check_stripflags "$@"
968     test_stripflags "$@" && add_stripflags "$@"
969 }
970
971 check_header(){
972     log check_header "$@"
973     headers=$1
974     shift
975     disable_sanitized $headers
976     {
977         for hdr in $headers; do
978             print_include $hdr
979         done
980         echo "int x;"
981     } | test_cpp "$@" && enable_sanitized $headers
982 }
983
984 check_func(){
985     log check_func "$@"
986     func=$1
987     shift
988     disable $func
989     test_ld "$@" <<EOF && enable $func
990 extern int $func();
991 int main(void){ $func(); }
992 EOF
993 }
994
995 check_mathfunc(){
996     log check_mathfunc "$@"
997     func=$1
998     narg=$2
999     shift 2
1000     test $narg = 2 && args="f, g" || args="f"
1001     disable $func
1002     test_ld "$@" <<EOF && enable $func
1003 #include <math.h>
1004 float foo(float f, float g) { return $func($args); }
1005 int main(void){ return 0; }
1006 EOF
1007 }
1008
1009 check_func_headers(){
1010     log check_func_headers "$@"
1011     headers=$1
1012     funcs=$2
1013     shift 2
1014     {
1015         for hdr in $headers; do
1016             print_include $hdr
1017         done
1018         for func in $funcs; do
1019             echo "long check_$func(void) { return (long) $func; }"
1020         done
1021         echo "int main(void) { return 0; }"
1022     } | test_ld "$@" && enable $funcs && enable_sanitized $headers
1023 }
1024
1025 test_cpp_condition(){
1026     log test_cpp_condition "$@"
1027     header=$1
1028     condition=$2
1029     shift 2
1030     test_cpp "$@" <<EOF
1031 #include <$header>
1032 #if !($condition)
1033 #error "unsatisfied condition: $condition"
1034 #endif
1035 EOF
1036 }
1037
1038 check_cpp_condition(){
1039     log check_cpp_condition "$@"
1040     name=$1
1041     shift 1
1042     disable $name
1043     test_cpp_condition "$@" && enable $name
1044 }
1045
1046 check_lib(){
1047     log check_lib "$@"
1048     name="$1"
1049     headers="$2"
1050     funcs="$3"
1051     shift 3
1052     disable $name
1053     check_func_headers "$headers" "$funcs" "$@" &&
1054         enable $name && eval ${name}_extralibs="\$@"
1055 }
1056
1057 test_pkg_config(){
1058     log test_pkg_config "$@"
1059     name="$1"
1060     pkg_version="$2"
1061     pkg="${2%% *}"
1062     headers="$3"
1063     funcs="$4"
1064     shift 4
1065     disable $name
1066     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1067     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1068     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1069     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1070         enable $name &&
1071         set_sanitized "${name}_cflags"    $pkg_cflags &&
1072         set_sanitized "${name}_extralibs" $pkg_libs
1073 }
1074
1075 check_pkg_config(){
1076     log check_pkg_config "$@"
1077     name="$1"
1078     test_pkg_config "$@" &&
1079         eval add_cflags \$${name}_cflags
1080 }
1081
1082 test_exec(){
1083     log test_exec "$@"
1084     test_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1085 }
1086
1087 check_exec_crash(){
1088     log check_exec_crash "$@"
1089     code=$(cat)
1090
1091     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1092     # are safe but may not be available everywhere.  Thus we use
1093     # raise(SIGTERM) instead.  The check is run in a subshell so we
1094     # can redirect the "Terminated" message from the shell.  SIGBUS
1095     # is not defined by standard C so it is used conditionally.
1096
1097     (test_exec "$@") >> $logfile 2>&1 <<EOF
1098 #include <signal.h>
1099 static void sighandler(int sig){
1100     raise(SIGTERM);
1101 }
1102 int foo(void){
1103     $code
1104 }
1105 int (*func_ptr)(void) = foo;
1106 int main(void){
1107     signal(SIGILL, sighandler);
1108     signal(SIGFPE, sighandler);
1109     signal(SIGSEGV, sighandler);
1110 #ifdef SIGBUS
1111     signal(SIGBUS, sighandler);
1112 #endif
1113     return func_ptr();
1114 }
1115 EOF
1116 }
1117
1118 check_type(){
1119     log check_type "$@"
1120     headers=$1
1121     type=$2
1122     shift 2
1123     disable_sanitized "$type"
1124     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1125 }
1126
1127 check_struct(){
1128     log check_struct "$@"
1129     headers=$1
1130     struct=$2
1131     member=$3
1132     shift 3
1133     disable_sanitized "${struct}_${member}"
1134     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1135         enable_sanitized "${struct}_${member}"
1136 }
1137
1138 check_builtin(){
1139     log check_builtin "$@"
1140     name=$1
1141     shift
1142     disable "$name"
1143     test_code ld "$@" && enable "$name"
1144 }
1145
1146 check_compile_assert(){
1147     log check_compile_assert "$@"
1148     name=$1
1149     headers=$2
1150     condition=$3
1151     shift 3
1152     disable "$name"
1153     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1154 }
1155
1156 check_cc(){
1157     log check_cc "$@"
1158     name=$1
1159     shift
1160     disable "$name"
1161     test_code cc "$@" && enable "$name"
1162 }
1163
1164 require(){
1165     log require "$@"
1166     name_version="$1"
1167     name="${1%% *}"
1168     shift
1169     check_lib $name "$@" || die "ERROR: $name_version not found"
1170 }
1171
1172 require_cc(){
1173     log require_cc "$@"
1174     name="$1"
1175     shift
1176     test_code cc "$@" || die "ERROR: $name failed"
1177 }
1178
1179 require_header(){
1180     log require_header "$@"
1181     headers="$1"
1182     check_header "$@" || die "ERROR: $headers not found"
1183 }
1184
1185 require_cpp_condition(){
1186     log require_cpp_condition "$@"
1187     condition="$2"
1188     test_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1189 }
1190
1191 require_pkg_config(){
1192     log require_pkg_config "$@"
1193     pkg_version="$2"
1194     check_pkg_config "$@" || die "ERROR: $pkg_version not found"
1195 }
1196
1197 hostcc_e(){
1198     eval printf '%s\\n' $HOSTCC_E
1199 }
1200
1201 hostcc_o(){
1202     eval printf '%s\\n' $HOSTCC_O
1203 }
1204
1205 test_host_cc(){
1206     log test_host_cc "$@"
1207     cat > $TMPC
1208     log_file $TMPC
1209     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1210 }
1211
1212 test_host_cpp(){
1213     log test_host_cpp "$@"
1214     cat > $TMPC
1215     log_file $TMPC
1216     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1217 }
1218
1219 check_host_cppflags(){
1220     log check_host_cppflags "$@"
1221     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1222 #include <stdlib.h>;
1223 EOF
1224 }
1225
1226 check_host_cflags(){
1227     log check_host_cflags "$@"
1228     set -- $($host_cflags_filter "$@")
1229     test_host_cc "$@" <<EOF && append host_cflags "$@"
1230 int x;
1231 EOF
1232 }
1233
1234 test_host_cpp_condition(){
1235     log test_host_cpp_condition "$@"
1236     header=$1
1237     condition=$2
1238     shift 2
1239     test_host_cpp "$@" <<EOF
1240 #include <$header>
1241 #if !($condition)
1242 #error "unsatisfied condition: $condition"
1243 #endif
1244 EOF
1245 }
1246
1247 check_host_cpp_condition(){
1248     log check_host_cpp_condition "$@"
1249     name=$1
1250     shift 1
1251     disable $name
1252     test_host_cpp_condition "$@" && enable $name
1253 }
1254
1255 cp_if_changed(){
1256     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1257     mkdir -p "$(dirname $2)"
1258     cp -f "$1" "$2"
1259 }
1260
1261 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1262 # system-dependent things.
1263
1264 AVCODEC_COMPONENTS="
1265     bsfs
1266     decoders
1267     encoders
1268     hwaccels
1269     parsers
1270 "
1271
1272 AVDEVICE_COMPONENTS="
1273     indevs
1274 "
1275 AVFILTER_COMPONENTS="
1276     filters
1277 "
1278 AVFORMAT_COMPONENTS="
1279     demuxers
1280     muxers
1281     protocols
1282 "
1283
1284 COMPONENT_LIST="
1285     $AVCODEC_COMPONENTS
1286     $AVDEVICE_COMPONENTS
1287     $AVFILTER_COMPONENTS
1288     $AVFORMAT_COMPONENTS
1289 "
1290
1291 EXAMPLE_LIST="
1292     decode_audio_example
1293     decode_video_example
1294     encode_audio_example
1295     encode_video_example
1296     filter_audio_example
1297     metadata_example
1298     output_example
1299     qsvdec_example
1300     transcode_aac_example
1301 "
1302
1303 # catchall list of things that require external libs to link
1304 EXTRALIBS_LIST="
1305     cpu_init
1306     cws2fws
1307 "
1308
1309 HWACCEL_LIBRARY_NONFREE_LIST="
1310     cuda
1311     cuvid
1312     libnpp
1313 "
1314 HWACCEL_LIBRARY_LIST="
1315     $HWACCEL_LIBRARY_NONFREE_LIST
1316     amf
1317     d3d11va
1318     dxva2
1319     libmfx
1320     mmal
1321     nvenc
1322     omx
1323     vaapi
1324     vda
1325     vdpau
1326 "
1327
1328 EXTERNAL_LIBRARY_GPL_LIST="
1329     libcdio
1330     libx264
1331     libx265
1332     libxavs
1333     libxvid
1334 "
1335
1336 EXTERNAL_LIBRARY_NONFREE_LIST="
1337     libfaac
1338     libfdk_aac
1339     openssl
1340 "
1341
1342 EXTERNAL_LIBRARY_VERSION3_LIST="
1343     libopencore_amrnb
1344     libopencore_amrwb
1345     libvo_aacenc
1346     libvo_amrwbenc
1347 "
1348
1349 EXTERNAL_LIBRARY_LIST="
1350     $EXTERNAL_LIBRARY_GPL_LIST
1351     $EXTERNAL_LIBRARY_NONFREE_LIST
1352     $EXTERNAL_LIBRARY_VERSION3_LIST
1353     avisynth
1354     avxsynth
1355     frei0r
1356     gnutls
1357     libaom
1358     libbs2b
1359     libdc1394
1360     libdcadec
1361     libfontconfig
1362     libfreetype
1363     libgsm
1364     libhdcd
1365     libilbc
1366     libjack
1367     libkvazaar
1368     libmp3lame
1369     libopencv
1370     libopenh264
1371     libopenjpeg
1372     libopus
1373     libpulse
1374     librtmp
1375     libschroedinger
1376     libsnappy
1377     libspeex
1378     libsrt
1379     libtheora
1380     libtwolame
1381     libvorbis
1382     libvpx
1383     libwavpack
1384     libwebp
1385     libxcb
1386     libxcb_shm
1387     libxcb_xfixes
1388 "
1389
1390 SYSTEM_LIBRARY_LIST="
1391     bzlib
1392     zlib
1393 "
1394
1395 FEATURE_LIST="
1396     gray
1397     hardcoded_tables
1398     omx_rpi
1399     runtime_cpudetect
1400     safe_bitstream_reader
1401     shared
1402     small
1403     sram
1404     static
1405     swscale_alpha
1406 "
1407
1408 LIBRARY_LIST="
1409     avcodec
1410     avdevice
1411     avfilter
1412     avformat
1413     avresample
1414     avutil
1415     swscale
1416 "
1417
1418 LICENSE_LIST="
1419     gpl
1420     nonfree
1421     version3
1422 "
1423
1424 PROGRAM_LIST="
1425     avconv
1426     avplay
1427     avprobe
1428 "
1429
1430 SUBSYSTEM_LIST="
1431     dct
1432     doc
1433     error_resilience
1434     faan
1435     fft
1436     lsp
1437     lzo
1438     mdct
1439     network
1440     rdft
1441 "
1442
1443 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1444 CONFIG_LIST="
1445     $EXAMPLE_LIST
1446     $EXTERNAL_LIBRARY_LIST
1447     $HWACCEL_LIBRARY_LIST
1448     $FEATURE_LIST
1449     $LICENSE_LIST
1450     $LIBRARY_LIST
1451     $PROGRAM_LIST
1452     $SUBSYSTEM_LIST
1453     $SYSTEM_LIBRARY_LIST
1454     neon_clobber_test
1455     pic
1456     pod2man
1457     texi2html
1458     thumb
1459     valgrind_backtrace
1460     xmm_clobber_test
1461     $COMPONENT_LIST
1462 "
1463
1464 THREADS_LIST="
1465     pthreads
1466     w32threads
1467 "
1468
1469 ATOMICS_LIST="
1470     atomics_gcc
1471     atomics_suncc
1472     atomics_win32
1473 "
1474
1475 ARCH_LIST="
1476     aarch64
1477     alpha
1478     arm
1479     avr32
1480     avr32_ap
1481     avr32_uc
1482     bfin
1483     ia64
1484     m68k
1485     mips
1486     mips64
1487     parisc
1488     ppc
1489     ppc64
1490     s390
1491     sh4
1492     sparc
1493     sparc64
1494     tilegx
1495     tilepro
1496     tomi
1497     x86
1498     x86_32
1499     x86_64
1500 "
1501
1502 ARCH_EXT_LIST_ARM="
1503     armv5te
1504     armv6
1505     armv6t2
1506     armv8
1507     neon
1508     vfp
1509     vfpv3
1510 "
1511
1512 ARCH_EXT_LIST_X86_SIMD="
1513     amd3dnow
1514     amd3dnowext
1515     avx
1516     avx2
1517     fma3
1518     fma4
1519     mmx
1520     mmxext
1521     sse
1522     sse2
1523     sse3
1524     sse4
1525     sse42
1526     ssse3
1527     xop
1528 "
1529
1530 ARCH_EXT_LIST_PPC="
1531     altivec
1532     dcbzl
1533     ldbrx
1534     power8
1535     ppc4xx
1536     vsx
1537 "
1538
1539 ARCH_EXT_LIST_X86="
1540     $ARCH_EXT_LIST_X86_SIMD
1541     cpunop
1542     i686
1543 "
1544
1545 ARCH_EXT_LIST_MIPS="
1546     loongson
1547     mips32r1
1548     mips64r1
1549     mips32r2
1550     mips64r2
1551     mips32r6
1552     mips64r6
1553 "
1554
1555 ARCH_EXT_LIST="
1556     $ARCH_EXT_LIST_ARM
1557     $ARCH_EXT_LIST_MIPS
1558     $ARCH_EXT_LIST_PPC
1559     $ARCH_EXT_LIST_X86
1560     vis
1561 "
1562
1563 ARCH_FEATURES="
1564     aligned_stack
1565     fast_64bit
1566     fast_clz
1567     fast_cmov
1568     local_aligned_8
1569     local_aligned_16
1570     local_aligned_32
1571     simd_align_16
1572     simd_align_32
1573 "
1574
1575 BUILTIN_LIST="
1576     atomic_cas_ptr
1577     machine_rw_barrier
1578     MemoryBarrier
1579     mm_empty
1580     rdtsc
1581     sem_timedwait
1582     sync_val_compare_and_swap
1583 "
1584 HAVE_LIST_CMDLINE="
1585     inline_asm
1586     symver
1587     x86asm
1588 "
1589
1590 HAVE_LIST_PUB="
1591     bigendian
1592     fast_unaligned
1593 "
1594
1595 HEADERS_LIST="
1596     AVFoundation_AVFoundation_h
1597     arpa_inet_h
1598     cdio_paranoia_h
1599     cdio_paranoia_paranoia_h
1600     dispatch_dispatch_h
1601     dev_bktr_ioctl_bt848_h
1602     dev_bktr_ioctl_meteor_h
1603     dev_ic_bt8xx_h
1604     dev_video_bktr_ioctl_bt848_h
1605     dev_video_meteor_ioctl_meteor_h
1606     direct_h
1607     dxgidebug_h
1608     dxva_h
1609     io_h
1610     machine_ioctl_bt848_h
1611     machine_ioctl_meteor_h
1612     malloc_h
1613     poll_h
1614     sys_param_h
1615     sys_resource_h
1616     sys_select_h
1617     sys_soundcard_h
1618     sys_time_h
1619     sys_un_h
1620     sys_videoio_h
1621     unistd_h
1622     valgrind_valgrind_h
1623     windows_h
1624     winsock2_h
1625 "
1626
1627 INTRINSICS_LIST="
1628     intrinsics_neon
1629 "
1630
1631 MATH_FUNCS="
1632     atanf
1633     atan2f
1634     cbrtf
1635     cosf
1636     exp2
1637     exp2f
1638     expf
1639     isinf
1640     isnan
1641     ldexpf
1642     llrint
1643     llrintf
1644     log2
1645     log2f
1646     log10f
1647     lrint
1648     lrintf
1649     powf
1650     rint
1651     round
1652     roundf
1653     sinf
1654     trunc
1655     truncf
1656 "
1657
1658 SYSTEM_FEATURES="
1659     dos_paths
1660     libc_msvcrt
1661     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1662     section_data_rel_ro
1663     threads
1664     uwp
1665 "
1666
1667 SYSTEM_FUNCS="
1668     aligned_malloc
1669     clock_gettime
1670     closesocket
1671     CommandLineToArgvW
1672     fcntl
1673     getaddrinfo
1674     gethrtime
1675     getopt
1676     GetProcessAffinityMask
1677     GetProcessMemoryInfo
1678     GetProcessTimes
1679     getrusage
1680     GetSystemTimeAsFileTime
1681     gettimeofday
1682     gmtime_r
1683     inet_aton
1684     isatty
1685     localtime_r
1686     mach_absolute_time
1687     MapViewOfFile
1688     memalign
1689     mmap
1690     mprotect
1691     nanosleep
1692     posix_memalign
1693     sched_getaffinity
1694     SetConsoleTextAttribute
1695     setmode
1696     setrlimit
1697     Sleep
1698     strerror_r
1699     sysconf
1700     sysctl
1701     usleep
1702     VirtualAlloc
1703 "
1704
1705 SYSTEM_LIBRARIES="
1706     sdl
1707     vaapi_1
1708     vaapi_drm
1709     vaapi_x11
1710     vdpau_x11
1711     wincrypt
1712 "
1713
1714 TOOLCHAIN_FEATURES="
1715     as_arch_directive
1716     as_fpu_directive
1717     as_func
1718     as_object_arch
1719     asm_mod_q
1720     blocks_extension
1721     ebp_available
1722     ebx_available
1723     gnu_as
1724     ibm_asm
1725     inline_asm_labels
1726     pragma_deprecated
1727     symver_asm_label
1728     symver_gnu_asm
1729     vfp_args
1730     xform_asm
1731     xmm_clobbers
1732 "
1733
1734 TYPES_LIST="
1735     CUVIDDECODECREATEINFO_bitDepthMinus8
1736     socklen_t
1737     struct_addrinfo
1738     struct_group_source_req
1739     struct_ip_mreq_source
1740     struct_ipv6_mreq
1741     struct_pollfd
1742     struct_rusage_ru_maxrss
1743     struct_sockaddr_in6
1744     struct_sockaddr_sa_len
1745     struct_sockaddr_storage
1746     struct_v4l2_frmivalenum_discrete
1747 "
1748
1749 HAVE_LIST="
1750     $ARCH_EXT_LIST
1751     $(add_suffix _external $ARCH_EXT_LIST)
1752     $(add_suffix _inline   $ARCH_EXT_LIST)
1753     $ARCH_FEATURES
1754     $BUILTIN_LIST
1755     $HAVE_LIST_CMDLINE
1756     $HAVE_LIST_PUB
1757     $HEADERS_LIST
1758     $INTRINSICS_LIST
1759     $MATH_FUNCS
1760     $SYSTEM_FEATURES
1761     $SYSTEM_FUNCS
1762     $SYSTEM_LIBRARIES
1763     $THREADS_LIST
1764     $TOOLCHAIN_FEATURES
1765     $TYPES_LIST
1766 "
1767
1768 # options emitted with CONFIG_ prefix but not available on the command line
1769 CONFIG_EXTRA="
1770     aandcttables
1771     ac3dsp
1772     adts_header
1773     audio_frame_queue
1774     audiodsp
1775     blockdsp
1776     bswapdsp
1777     cabac
1778     cbs
1779     cbs_h264
1780     cbs_h265
1781     cbs_mpeg2
1782     dirac_parse
1783     dvprofile
1784     faandct
1785     faanidct
1786     fdctdsp
1787     flacdsp
1788     fmtconvert
1789     g722dsp
1790     gmp
1791     golomb
1792     gplv3
1793     h263dsp
1794     h264chroma
1795     h264dsp
1796     h264parse
1797     h264pred
1798     h264qpel
1799     hevcparse
1800     hpeldsp
1801     huffman
1802     huffyuvdsp
1803     huffyuvencdsp
1804     idctdsp
1805     iirfilter
1806     imdct15
1807     intrax8
1808     iso_media
1809     ividsp
1810     jpegtables
1811     lgplv3
1812     libx262
1813     libxcb_shape
1814     lpc
1815     lzf
1816     me_cmp
1817     mpeg_er
1818     mpegaudio
1819     mpegaudiodsp
1820     mpegaudioheader
1821     mpegvideo
1822     mpegvideoenc
1823     mss34dsp
1824     pixblockdsp
1825     qpeldsp
1826     qsv
1827     qsvdec
1828     qsvenc
1829     qsvvpp
1830     rangecoder
1831     riffdec
1832     riffenc
1833     rtpdec
1834     rtpenc_chain
1835     rv34dsp
1836     sinewin
1837     snappy
1838     srtp
1839     startcode
1840     texturedsp
1841     texturedspenc
1842     tpeldsp
1843     vaapi_encode
1844     vc1dsp
1845     videodsp
1846     vp3dsp
1847     vp56dsp
1848     vp8dsp
1849     wma_freqs
1850     wmv2dsp
1851 "
1852
1853 CMDLINE_SELECT="
1854     $ARCH_EXT_LIST
1855     $CONFIG_LIST
1856     $HAVE_LIST_CMDLINE
1857     $THREADS_LIST
1858     asm
1859     cross_compile
1860     debug
1861     extra_warnings
1862     logging
1863     lto
1864     optimizations
1865     rpath
1866 "
1867
1868 PATHS_LIST="
1869     bindir
1870     datadir
1871     docdir
1872     incdir
1873     libdir
1874     mandir
1875     prefix
1876     shlibdir
1877 "
1878
1879 CMDLINE_SET="
1880     $PATHS_LIST
1881     ar
1882     arch
1883     as
1884     cc
1885     objcc
1886     cpu
1887     cross_prefix
1888     custom_allocator
1889     dep_cc
1890     env
1891     extra_version
1892     host_cc
1893     host_cflags
1894     host_extralibs
1895     host_ld
1896     host_ldflags
1897     host_os
1898     ignore_tests
1899     ld
1900     logfile
1901     malloc_prefix
1902     nm
1903     optflags
1904     pkg_config
1905     pkg_config_flags
1906     samples
1907     sysinclude
1908     sysroot
1909     target_exec
1910     target_os
1911     target_path
1912     target_samples
1913     toolchain
1914     x86asmexe
1915 "
1916
1917 CMDLINE_APPEND="
1918     extra_cflags
1919     extra_objcflags
1920     host_cppflags
1921 "
1922
1923 # code dependency declarations
1924
1925 # architecture extensions
1926
1927 armv5te_deps="arm"
1928 armv6_deps="arm"
1929 armv6t2_deps="arm"
1930 armv8_deps="aarch64"
1931 neon_deps_any="aarch64 arm"
1932 intrinsics_neon_deps="neon"
1933 vfp_deps_any="aarch64 arm"
1934 vfpv3_deps="vfp"
1935
1936 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1937
1938 altivec_deps="ppc"
1939 dcbzl_deps="ppc"
1940 ldbrx_deps="ppc"
1941 ppc4xx_deps="ppc"
1942 vsx_deps="altivec"
1943 power8_deps="vsx"
1944
1945 loongson_deps="mips"
1946 mips32r1_deps="mips32"
1947 mips32r2_deps="mips32"
1948 mips32r6_deps="mips32"
1949 mips64r1_deps="mips64"
1950 mips64r2_deps="mips64"
1951 mips64r6_deps="mips64"
1952
1953 vis_deps="sparc"
1954
1955 cpunop_deps="i686"
1956 x86_64_select="i686"
1957 x86_64_suggest="fast_cmov"
1958
1959 amd3dnow_deps="mmx"
1960 amd3dnowext_deps="amd3dnow"
1961 i686_deps="x86"
1962 mmx_deps="x86"
1963 mmxext_deps="mmx"
1964 sse_deps="mmxext"
1965 sse2_deps="sse"
1966 sse3_deps="sse2"
1967 ssse3_deps="sse3"
1968 sse4_deps="ssse3"
1969 sse42_deps="sse4"
1970 avx_deps="sse42"
1971 xop_deps="avx"
1972 fma3_deps="avx"
1973 fma4_deps="avx"
1974 avx2_deps="avx"
1975
1976 mmx_external_deps="x86asm"
1977 mmx_inline_deps="inline_asm x86"
1978 mmx_suggest="mmx_external mmx_inline"
1979
1980 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1981     eval dep=\$${ext}_deps
1982     eval ${ext}_external_deps='"${dep}_external"'
1983     eval ${ext}_inline_deps='"${dep}_inline"'
1984     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1985 done
1986
1987 aligned_stack_if_any="aarch64 ppc x86"
1988 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1989 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1990 fast_unaligned_if_any="aarch64 ppc x86"
1991 simd_align_16_if_any="altivec neon sse"
1992 simd_align_32_if_any="avx"
1993
1994 # system capabilities
1995 symver_if_any="symver_asm_label symver_gnu_asm"
1996 valgrind_backtrace_conflict="optimizations"
1997 valgrind_backtrace_deps="valgrind_valgrind_h"
1998
1999 # threading support
2000 atomics_gcc_if="sync_val_compare_and_swap"
2001 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2002 atomics_win32_if="MemoryBarrier"
2003 atomics_native_if_any="$ATOMICS_LIST"
2004 w32threads_deps="atomics_native CONDITION_VARIABLE"
2005 threads_if_any="$THREADS_LIST"
2006
2007 # subsystems
2008 cbs_h264_select="cbs golomb"
2009 cbs_h265_select="cbs golomb"
2010 cbs_mpeg2_select="cbs"
2011 dct_select="rdft"
2012 dirac_parse_select="golomb"
2013 error_resilience_select="me_cmp"
2014 faandct_deps="faan"
2015 faandct_select="fdctdsp"
2016 faanidct_deps="faan"
2017 faanidct_select="idctdsp"
2018 h264dsp_select="startcode"
2019 hevcparse_select="golomb"
2020 intrax8_select="blockdsp idctdsp"
2021 mdct_select="fft"
2022 rdft_select="fft"
2023 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2024 mpeg_er_select="error_resilience"
2025 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2026 mpegaudiodsp_select="dct"
2027 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
2028 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2029 vc1dsp_select="h264chroma qpeldsp startcode"
2030
2031 # decoders / encoders
2032 aac_decoder_select="adts_header imdct15 mdct sinewin"
2033 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2034 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2035 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2036 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2037 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2038 adpcm_g722_decoder_select="g722dsp"
2039 adpcm_g722_encoder_select="g722dsp"
2040 aic_decoder_select="golomb idctdsp"
2041 alac_encoder_select="lpc"
2042 als_decoder_select="bswapdsp"
2043 amrnb_decoder_select="lsp"
2044 amrwb_decoder_select="lsp"
2045 amv_decoder_select="sp5x_decoder"
2046 ape_decoder_select="bswapdsp"
2047 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2048 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2049 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2050 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2051 atrac1_decoder_select="mdct sinewin"
2052 atrac3_decoder_select="mdct"
2053 atrac3p_decoder_select="mdct sinewin"
2054 bink_decoder_select="blockdsp hpeldsp"
2055 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2056 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2057 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2058 clearvideo_decoder_select="idctdsp"
2059 cllc_decoder_select="bswapdsp"
2060 comfortnoise_encoder_select="lpc"
2061 cook_decoder_select="audiodsp mdct sinewin"
2062 cscd_decoder_select="lzo"
2063 cscd_decoder_suggest="zlib"
2064 dca_decoder_select="fmtconvert mdct"
2065 dds_decoder_select="texturedsp"
2066 dnxhd_decoder_select="blockdsp idctdsp"
2067 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2068 dvvideo_decoder_select="dvprofile idctdsp"
2069 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2070 dxa_decoder_deps="zlib"
2071 dxv_decoder_select="lzf texturedsp"
2072 eac3_decoder_select="ac3_decoder"
2073 eac3_encoder_select="ac3_encoder"
2074 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2075 eatgq_decoder_select="aandcttables idctdsp"
2076 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2077 exr_decoder_deps="zlib"
2078 ffv1_decoder_select="rangecoder"
2079 ffv1_encoder_select="rangecoder"
2080 ffvhuff_decoder_select="huffyuv_decoder"
2081 ffvhuff_encoder_select="huffyuv_encoder"
2082 fic_decoder_select="golomb"
2083 flac_decoder_select="flacdsp"
2084 flac_encoder_select="bswapdsp flacdsp lpc"
2085 flashsv_decoder_deps="zlib"
2086 flashsv_encoder_deps="zlib"
2087 flashsv2_decoder_deps="zlib"
2088 flv_decoder_select="h263_decoder"
2089 flv_encoder_select="h263_encoder"
2090 fourxm_decoder_select="blockdsp bswapdsp"
2091 fraps_decoder_select="bswapdsp huffman"
2092 g2m_decoder_deps="zlib"
2093 g2m_decoder_select="blockdsp idctdsp jpegtables"
2094 h261_decoder_select="mpeg_er mpegvideo"
2095 h261_encoder_select="aandcttables mpegvideoenc"
2096 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2097 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2098 h263i_decoder_select="h263_decoder"
2099 h263p_encoder_select="h263_encoder"
2100 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2101 h264_decoder_suggest="error_resilience"
2102 hap_decoder_select="snappy texturedsp"
2103 hap_encoder_deps="libsnappy"
2104 hap_encoder_select="texturedspenc"
2105 hevc_decoder_select="bswapdsp cabac hevcparse videodsp"
2106 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2107 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2108 iac_decoder_select="imc_decoder"
2109 imc_decoder_select="bswapdsp fft mdct sinewin"
2110 indeo3_decoder_select="hpeldsp"
2111 indeo4_decoder_select="ividsp"
2112 indeo5_decoder_select="ividsp"
2113 interplay_video_decoder_select="hpeldsp"
2114 jpegls_decoder_select="mjpeg_decoder"
2115 jv_decoder_select="blockdsp"
2116 lagarith_decoder_select="huffyuvdsp"
2117 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2118 magicyuv_decoder_select="huffyuvdsp"
2119 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2120 metasound_decoder_select="lsp mdct sinewin"
2121 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2122 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2123 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2124 mjpegb_decoder_select="mjpeg_decoder"
2125 mlp_decoder_select="mlp_parser"
2126 motionpixels_decoder_select="bswapdsp"
2127 mp1_decoder_select="mpegaudio"
2128 mp1float_decoder_select="mpegaudio"
2129 mp2_decoder_select="mpegaudio"
2130 mp2float_decoder_select="mpegaudio"
2131 mp3_decoder_select="mpegaudio"
2132 mp3adu_decoder_select="mpegaudio"
2133 mp3adufloat_decoder_select="mpegaudio"
2134 mp3float_decoder_select="mpegaudio"
2135 mp3on4_decoder_select="mpegaudio"
2136 mp3on4float_decoder_select="mpegaudio"
2137 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2138 mpc8_decoder_select="mpegaudiodsp"
2139 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2140 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2141 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2142 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2143 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2144 mpeg4_encoder_select="h263_encoder"
2145 msa1_decoder_select="mss34dsp"
2146 msmpeg4v1_decoder_select="h263_decoder"
2147 msmpeg4v2_decoder_select="h263_decoder"
2148 msmpeg4v2_encoder_select="h263_encoder"
2149 msmpeg4v3_decoder_select="h263_decoder"
2150 msmpeg4v3_encoder_select="h263_encoder"
2151 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2152 mts2_decoder_select="mss34dsp"
2153 mxpeg_decoder_select="mjpeg_decoder"
2154 nellymoser_decoder_select="mdct sinewin"
2155 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2156 nuv_decoder_select="idctdsp lzo"
2157 on2avc_decoder_select="mdct"
2158 opus_decoder_deps="avresample"
2159 opus_decoder_select="imdct15"
2160 png_decoder_deps="zlib"
2161 png_encoder_deps="zlib"
2162 png_encoder_select="huffyuvencdsp"
2163 prores_decoder_select="idctdsp"
2164 prores_encoder_select="fdctdsp"
2165 qcelp_decoder_select="lsp"
2166 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2167 ra_144_encoder_select="audio_frame_queue lpc"
2168 ralf_decoder_select="golomb"
2169 rscc_decoder_deps="zlib"
2170 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2171 rv10_encoder_select="h263_encoder"
2172 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2173 rv20_encoder_select="h263_encoder"
2174 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2175 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2176 screenpresso_decoder_deps="zlib"
2177 sipr_decoder_select="lsp"
2178 sp5x_decoder_select="mjpeg_decoder"
2179 svq1_decoder_select="hpeldsp"
2180 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2181 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2182 svq3_decoder_suggest="zlib"
2183 tak_decoder_select="audiodsp"
2184 tdsc_decoder_deps="zlib"
2185 tdsc_decoder_select="mjpeg_decoder"
2186 theora_decoder_select="vp3_decoder"
2187 thp_decoder_select="mjpeg_decoder"
2188 tiff_decoder_suggest="zlib"
2189 tiff_encoder_suggest="zlib"
2190 truehd_decoder_select="mlp_decoder"
2191 truemotion2_decoder_select="bswapdsp"
2192 truespeech_decoder_select="bswapdsp"
2193 tscc_decoder_deps="zlib"
2194 txd_decoder_select="texturedsp"
2195 twinvq_decoder_select="mdct lsp sinewin"
2196 utvideo_decoder_select="bswapdsp huffyuvdsp"
2197 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2198 vble_decoder_select="huffyuvdsp"
2199 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2200 vc1image_decoder_select="vc1_decoder"
2201 vorbis_decoder_select="mdct"
2202 vorbis_encoder_select="mdct"
2203 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2204 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2205 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2206 vp6a_decoder_select="vp6_decoder"
2207 vp6f_decoder_select="vp6_decoder"
2208 vp7_decoder_select="h264pred videodsp vp8dsp"
2209 vp8_decoder_select="h264pred videodsp vp8dsp"
2210 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2211 webp_decoder_select="vp8_decoder"
2212 wmapro_decoder_select="mdct sinewin wma_freqs"
2213 wmav1_decoder_select="mdct sinewin wma_freqs"
2214 wmav1_encoder_select="mdct sinewin wma_freqs"
2215 wmav2_decoder_select="mdct sinewin wma_freqs"
2216 wmav2_encoder_select="mdct sinewin wma_freqs"
2217 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2218 wmv1_decoder_select="h263_decoder"
2219 wmv1_encoder_select="h263_encoder"
2220 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2221 wmv2_encoder_select="h263_encoder wmv2dsp"
2222 wmv3_decoder_select="vc1_decoder"
2223 wmv3image_decoder_select="wmv3_decoder"
2224 zerocodec_decoder_deps="zlib"
2225 zlib_decoder_deps="zlib"
2226 zlib_encoder_deps="zlib"
2227 zmbv_decoder_deps="zlib"
2228 zmbv_encoder_deps="zlib"
2229
2230 # hardware accelerators
2231 d3d11va_deps="dxva_h ID3D11VideoDecoder"
2232 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2233 vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
2234 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2235
2236 h263_vaapi_hwaccel_deps="vaapi"
2237 h263_vaapi_hwaccel_select="h263_decoder"
2238 h264_cuvid_hwaccel_deps="cuvid CUVIDH264PICPARAMS"
2239 h264_cuvid_hwaccel_select="h264_decoder"
2240 h264_d3d11va_hwaccel_deps="d3d11va"
2241 h264_d3d11va_hwaccel_select="h264_decoder"
2242 h264_d3d11va2_hwaccel_deps="d3d11va"
2243 h264_d3d11va2_hwaccel_select="h264_decoder"
2244 h264_dxva2_hwaccel_deps="dxva2"
2245 h264_dxva2_hwaccel_select="h264_decoder"
2246 h264_vaapi_hwaccel_deps="vaapi"
2247 h264_vaapi_hwaccel_select="h264_decoder"
2248 h264_vda_hwaccel_deps="vda"
2249 h264_vda_hwaccel_select="h264_decoder"
2250 h264_vda_old_hwaccel_deps="vda"
2251 h264_vda_old_hwaccel_select="h264_decoder"
2252 h264_vdpau_hwaccel_deps="vdpau"
2253 h264_vdpau_hwaccel_select="h264_decoder"
2254 hevc_cuvid_hwaccel_deps="cuvid CUVIDHEVCPICPARAMS"
2255 hevc_cuvid_hwaccel_select="hevc_decoder"
2256 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2257 hevc_d3d11va_hwaccel_select="hevc_decoder"
2258 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2259 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2260 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2261 hevc_dxva2_hwaccel_select="hevc_decoder"
2262 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2263 hevc_vaapi_hwaccel_select="hevc_decoder"
2264 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2265 hevc_vdpau_hwaccel_select="hevc_decoder"
2266 mpeg1_vdpau_hwaccel_deps="vdpau"
2267 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2268 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2269 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2270 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2271 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2272 mpeg2_dxva2_hwaccel_deps="dxva2"
2273 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2274 mpeg2_vaapi_hwaccel_deps="vaapi"
2275 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2276 mpeg2_vdpau_hwaccel_deps="vdpau"
2277 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2278 mpeg4_vaapi_hwaccel_deps="vaapi"
2279 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2280 mpeg4_vdpau_hwaccel_deps="vdpau"
2281 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2282 vc1_d3d11va_hwaccel_deps="d3d11va"
2283 vc1_d3d11va_hwaccel_select="vc1_decoder"
2284 vc1_d3d11va2_hwaccel_deps="d3d11va"
2285 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2286 vc1_dxva2_hwaccel_deps="dxva2"
2287 vc1_dxva2_hwaccel_select="vc1_decoder"
2288 vc1_vaapi_hwaccel_deps="vaapi"
2289 vc1_vaapi_hwaccel_select="vc1_decoder"
2290 vc1_vdpau_hwaccel_deps="vdpau"
2291 vc1_vdpau_hwaccel_select="vc1_decoder"
2292 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2293 vp8_vaapi_hwaccel_select="vp8_decoder"
2294 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2295 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2296 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2297 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2298 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2299
2300 # hardware-accelerated codecs
2301 amf_deps_any="libdl LoadLibrary"
2302 nvenc_deps_any="libdl LoadLibrary"
2303 omx_deps="libdl pthreads"
2304 omx_rpi_select="omx"
2305 qsv_deps="libmfx"
2306 qsvdec_select="qsv"
2307 qsvenc_select="qsv"
2308 qsvvpp_select="qsv"
2309 vaapi_encode_deps="vaapi"
2310
2311 hwupload_cuda_filter_deps="cuda"
2312 scale_npp_filter_deps="cuda libnpp"
2313
2314 h264_amf_encoder_deps="amf"
2315 h264_mmal_decoder_deps="mmal"
2316 h264_nvenc_encoder_deps="nvenc"
2317 h264_omx_encoder_deps="omx"
2318 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2319 h264_qsv_encoder_select="qsvenc"
2320 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2321 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2322 hevc_amf_encoder_deps="amf"
2323 hevc_nvenc_encoder_deps="nvenc"
2324 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2325 hevc_qsv_encoder_select="hevcparse qsvenc"
2326 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2327 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2328 mjpeg_qsv_encoder_deps="libmfx"
2329 mjpeg_qsv_encoder_select="qsvenc"
2330 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2331 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2332 mpeg2_mmal_decoder_deps="mmal"
2333 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2334 mpeg2_qsv_encoder_select="qsvenc"
2335 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2336 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2337 mpeg4_omx_encoder_deps="omx"
2338 vc1_mmal_decoder_deps="mmal"
2339 vc1_qsv_decoder_select="qsvdec vc1_parser"
2340 vp8_qsv_decoder_select="qsvdec vp8_parser"
2341 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2342 vp8_vaapi_encoder_select="vaapi_encode"
2343 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2344 vp9_vaapi_encoder_select="vaapi_encode"
2345
2346 nvenc_h264_encoder_select="h264_nvenc_encoder"
2347 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2348
2349 # parsers
2350 aac_parser_select="adts_header"
2351 h264_parser_select="golomb h264dsp h264parse"
2352 hevc_parser_select="hevcparse"
2353 mpegaudio_parser_select="mpegaudioheader"
2354 mpegvideo_parser_select="mpegvideo"
2355 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2356 vc1_parser_select="vc1dsp"
2357
2358 # bitstream_filters
2359 aac_adtstoasc_bsf_select="adts_header"
2360 h264_metadata_bsf_select="cbs_h264"
2361 h264_redundant_pps_bsf_select="cbs_h264"
2362 hevc_metadata_bsf_select="cbs_h265"
2363 mjpeg2jpeg_bsf_select="jpegtables"
2364 mpeg2_metadata_bsf_select="cbs_mpeg2"
2365 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2366
2367 # external libraries
2368 avisynth_deps="LoadLibrary"
2369 avxsynth_deps="libdl"
2370 avisynth_demuxer_deps_any="avisynth avxsynth"
2371 avisynth_demuxer_select="riffdec"
2372 libaom_av1_decoder_deps="libaom"
2373 libaom_av1_encoder_deps="libaom"
2374 libdcadec_decoder_deps="libdcadec"
2375 libfaac_encoder_deps="libfaac"
2376 libfaac_encoder_select="audio_frame_queue"
2377 libfdk_aac_decoder_deps="libfdk_aac"
2378 libfdk_aac_encoder_deps="libfdk_aac"
2379 libfdk_aac_encoder_select="audio_frame_queue"
2380 libgsm_decoder_deps="libgsm"
2381 libgsm_encoder_deps="libgsm"
2382 libgsm_ms_decoder_deps="libgsm"
2383 libgsm_ms_encoder_deps="libgsm"
2384 libilbc_decoder_deps="libilbc"
2385 libilbc_encoder_deps="libilbc"
2386 libkvazaar_encoder_deps="libkvazaar"
2387 libmp3lame_encoder_deps="libmp3lame"
2388 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2389 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2390 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2391 libopencore_amrnb_encoder_select="audio_frame_queue"
2392 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2393 libopenh264_decoder_deps="libopenh264"
2394 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2395 libopenh264_encoder_deps="libopenh264"
2396 libopenjpeg_decoder_deps="libopenjpeg"
2397 libopenjpeg_encoder_deps="libopenjpeg"
2398 libopus_decoder_deps="libopus"
2399 libopus_encoder_deps="libopus"
2400 libopus_encoder_select="audio_frame_queue"
2401 libschroedinger_decoder_deps="libschroedinger"
2402 libschroedinger_encoder_deps="libschroedinger"
2403 libspeex_decoder_deps="libspeex"
2404 libspeex_encoder_deps="libspeex"
2405 libspeex_encoder_select="audio_frame_queue"
2406 libtheora_encoder_deps="libtheora"
2407 libtwolame_encoder_deps="libtwolame"
2408 libvo_aacenc_encoder_deps="libvo_aacenc"
2409 libvo_aacenc_encoder_select="audio_frame_queue"
2410 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2411 libvorbis_encoder_deps="libvorbis"
2412 libvorbis_encoder_select="audio_frame_queue"
2413 libvpx_vp8_decoder_deps="libvpx"
2414 libvpx_vp8_encoder_deps="libvpx"
2415 libvpx_vp9_decoder_deps="libvpx"
2416 libvpx_vp9_encoder_deps="libvpx"
2417 libwavpack_encoder_deps="libwavpack"
2418 libwavpack_encoder_select="audio_frame_queue"
2419 libwebp_encoder_deps="libwebp"
2420 libx262_encoder_deps="libx262"
2421 libx264_encoder_deps="libx264"
2422 libx265_encoder_deps="libx265"
2423 libxavs_encoder_deps="libxavs"
2424 libxvid_encoder_deps="libxvid mkstemp"
2425
2426 # demuxers / muxers
2427 ac3_demuxer_select="ac3_parser"
2428 asf_demuxer_select="riffdec"
2429 asf_muxer_select="riffenc"
2430 asf_stream_muxer_select="asf_muxer"
2431 avi_demuxer_select="iso_media riffdec"
2432 avi_muxer_select="riffenc"
2433 caf_demuxer_select="iso_media riffdec"
2434 dash_muxer_select="mp4_muxer"
2435 dirac_demuxer_select="dirac_parser"
2436 dv_demuxer_select="dvprofile"
2437 dv_muxer_select="dvprofile"
2438 dxa_demuxer_select="riffdec"
2439 eac3_demuxer_select="ac3_parser"
2440 f4v_muxer_select="mov_muxer"
2441 flac_demuxer_select="flac_parser"
2442 hds_muxer_select="flv_muxer"
2443 hls_muxer_select="mpegts_muxer"
2444 ipod_muxer_select="mov_muxer"
2445 ismv_muxer_select="mov_muxer"
2446 matroska_audio_muxer_select="matroska_muxer"
2447 matroska_demuxer_select="iso_media riffdec"
2448 matroska_demuxer_suggest="bzlib lzo zlib"
2449 matroska_muxer_select="iso_media riffenc"
2450 mmf_muxer_select="riffenc"
2451 mov_demuxer_select="iso_media riffdec"
2452 mov_demuxer_suggest="zlib"
2453 mov_muxer_select="iso_media riffenc rtpenc_chain"
2454 mp3_demuxer_select="mpegaudio_parser"
2455 mp3_muxer_select="mpegaudioheader"
2456 mp4_muxer_select="mov_muxer"
2457 mpegts_demuxer_select="iso_media"
2458 mpegts_muxer_select="adts_muxer latm_muxer"
2459 mpegtsraw_demuxer_select="mpegts_demuxer"
2460 mxf_d10_muxer_select="mxf_muxer"
2461 nut_muxer_select="riffenc"
2462 nuv_demuxer_select="riffdec"
2463 oga_muxer_select="ogg_muxer"
2464 ogg_demuxer_select="dirac_parse"
2465 opus_muxer_select="ogg_muxer"
2466 psp_muxer_select="mov_muxer"
2467 rtp_demuxer_select="sdp_demuxer"
2468 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2469 rtsp_demuxer_select="http_protocol rtpdec"
2470 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2471 sap_demuxer_select="sdp_demuxer"
2472 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2473 sdp_demuxer_select="rtpdec"
2474 smoothstreaming_muxer_select="ismv_muxer"
2475 spdif_demuxer_select="adts_header"
2476 spdif_muxer_select="adts_header"
2477 spx_muxer_select="ogg_muxer"
2478 swf_demuxer_suggest="zlib"
2479 tak_demuxer_select="tak_parser"
2480 tg2_muxer_select="mov_muxer"
2481 tgp_muxer_select="mov_muxer"
2482 w64_demuxer_select="wav_demuxer"
2483 wav_demuxer_select="riffdec"
2484 wav_muxer_select="riffenc"
2485 webm_muxer_select="iso_media riffenc"
2486 wtv_demuxer_select="mpegts_demuxer riffdec"
2487 xmv_demuxer_select="riffdec"
2488 xwma_demuxer_select="riffdec"
2489
2490 # indevs
2491 alsa_indev_deps="alsa"
2492 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2493 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2494 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2495 fbdev_indev_deps="linux_fb_h"
2496 jack_indev_deps="libjack"
2497 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2498 libcdio_indev_deps="libcdio"
2499 libdc1394_indev_deps="libdc1394"
2500 oss_indev_deps_any="sys_soundcard_h"
2501 pulse_indev_deps="libpulse"
2502 sndio_indev_deps="sndio"
2503 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2504 vfwcap_indev_deps="vfw32 vfwcap_defines"
2505 xcbgrab_indev_deps="libxcb libxcb_shape"
2506 xcbgrab_indev_suggest="libxcb_shm libxcb_xfixes"
2507
2508 # protocols
2509 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
2510 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2511 ffrtmpcrypt_protocol_select="tcp_protocol"
2512 ffrtmphttp_protocol_conflict="librtmp_protocol"
2513 ffrtmphttp_protocol_select="http_protocol"
2514 gopher_protocol_select="network"
2515 http_protocol_select="tcp_protocol"
2516 http_protocol_suggest="zlib"
2517 httpproxy_protocol_select="tcp_protocol"
2518 httpproxy_protocol_suggest="zlib"
2519 https_protocol_select="tls_protocol"
2520 https_protocol_suggest="zlib"
2521 icecast_protocol_select="http_protocol"
2522 librtmp_protocol_deps="librtmp"
2523 librtmpe_protocol_deps="librtmp"
2524 librtmps_protocol_deps="librtmp"
2525 librtmpt_protocol_deps="librtmp"
2526 librtmpte_protocol_deps="librtmp"
2527 mmsh_protocol_select="http_protocol"
2528 mmst_protocol_select="network"
2529 libsrt_protocol_deps="libsrt"
2530 libsrt_protocol_select="network"
2531 rtmp_protocol_conflict="librtmp_protocol"
2532 rtmp_protocol_select="tcp_protocol"
2533 rtmp_protocol_suggest="zlib"
2534 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2535 rtmpe_protocol_suggest="zlib"
2536 rtmps_protocol_conflict="librtmp_protocol"
2537 rtmps_protocol_select="tls_protocol"
2538 rtmps_protocol_suggest="zlib"
2539 rtmpt_protocol_select="ffrtmphttp_protocol"
2540 rtmpt_protocol_suggest="zlib"
2541 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2542 rtmpte_protocol_suggest="zlib"
2543 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2544 rtmpts_protocol_suggest="zlib"
2545 rtp_protocol_select="udp_protocol"
2546 sctp_protocol_deps="struct_sctp_event_subscribe"
2547 sctp_protocol_select="network"
2548 srtp_protocol_select="rtp_protocol srtp"
2549 tcp_protocol_select="network"
2550 tls_protocol_deps_any="gnutls openssl"
2551 tls_protocol_select="tcp_protocol"
2552 udp_protocol_select="network"
2553 unix_protocol_deps="sys_un_h"
2554 unix_protocol_select="network"
2555
2556 # filters
2557 asyncts_filter_deps="avresample"
2558 blackframe_filter_deps="gpl"
2559 boxblur_filter_deps="gpl"
2560 bs2b_filter_deps="libbs2b"
2561 cropdetect_filter_deps="gpl"
2562 deinterlace_qsv_filter_deps="libmfx"
2563 deinterlace_vaapi_filter_deps="vaapi"
2564 delogo_filter_deps="gpl"
2565 drawtext_filter_deps="libfreetype"
2566 drawtext_filter_suggest="libfontconfig"
2567 frei0r_filter_deps="frei0r libdl"
2568 frei0r_src_filter_deps="frei0r libdl"
2569 hdcd_filter_deps="libhdcd"
2570 hqdn3d_filter_deps="gpl"
2571 interlace_filter_deps="gpl"
2572 movie_filter_deps="avcodec avformat"
2573 ocv_filter_deps="libopencv"
2574 overlay_qsv_filter_deps="libmfx"
2575 overlay_qsv_filter_select="qsvvpp"
2576 resample_filter_deps="avresample"
2577 scale_filter_deps="swscale"
2578 scale_qsv_filter_deps="libmfx"
2579 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2580 vpp_qsv_filter_deps="libmfx"
2581 vpp_qsv_filter_select="qsvvpp"
2582
2583 # examples
2584 decode_audio_example_deps="avcodec avutil"
2585 decode_video_example_deps="avcodec avutil"
2586 encode_audio_example_deps="avcodec avutil"
2587 encode_video_example_deps="avcodec avutil"
2588 filter_audio_example_deps="avfilter avutil"
2589 metadata_example_deps="avformat avutil"
2590 output_example_deps="avcodec avformat avresample avutil swscale"
2591 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2592 transcode_aac_example_deps="avcodec avformat avresample"
2593
2594 # EXTRALIBS_LIST
2595 cpu_init_extralibs="pthreads_extralibs"
2596 cws2fws_extralibs="zlib_extralibs"
2597
2598 # libraries, in linking order
2599 avcodec_deps="avutil"
2600 avcodec_select="null_bsf"
2601 avdevice_deps="avformat avcodec avutil"
2602 avfilter_deps="avutil"
2603 avformat_deps="avcodec avutil"
2604 avformat_suggest="network"
2605 avresample_deps="avutil"
2606 swscale_deps="avutil"
2607
2608 avcodec_extralibs="pthreads_extralibs libm_extralibs"
2609 avdevice_extralibs="libm_extralibs"
2610 avformat_extralibs="libm_extralibs"
2611 avfilter_extralibs="pthreads_extralibs libm_extralibs"
2612 avresample_extralibs="libm_extralibs"
2613 avutil_extralibs="clock_gettime_extralibs cuda_extralibs cuvid_extralibs d3d11va_extralibs libm_extralibs libmfx_extralibs nanosleep_extralibs pthreads_extralibs user32_extralibs vaapi_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs wincrypt_extralibs"
2614 swscale_extralibs="libm_extralibs"
2615
2616 # programs
2617 avconv_deps="avcodec avfilter avformat avresample swscale"
2618 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2619                fps_filter null_filter resample_filter scale_filter
2620                trim_filter"
2621 avconv_suggest="psapi shell32"
2622 avplay_deps="avcodec avfilter avformat avresample sdl"
2623 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2624 avplay_suggest="shell32"
2625 avprobe_deps="avcodec avformat"
2626 avprobe_suggest="shell32"
2627
2628 # documentation
2629 pod2man_deps="doc"
2630 texi2html_deps="doc"
2631
2632 # default parameters
2633
2634 logfile="avbuild/config.log"
2635
2636 # installation paths
2637 prefix_default="/usr/local"
2638 bindir_default='${prefix}/bin'
2639 datadir_default='${prefix}/share/avconv'
2640 docdir_default='${prefix}/share/doc/libav'
2641 incdir_default='${prefix}/include'
2642 libdir_default='${prefix}/lib'
2643 mandir_default='${prefix}/share/man'
2644 shlibdir_default="$libdir_default"
2645
2646 # toolchain
2647 ar_default="ar"
2648 cc_default="gcc"
2649 host_cc_default="gcc"
2650 x86asmexe_default="nasm"
2651 ln_s="ln -s -f"
2652 nm_default="nm -g"
2653 pkg_config_default=pkg-config
2654 ranlib="ranlib"
2655 strip="strip"
2656 version_script='--version-script'
2657 objformat="elf32"
2658
2659 # machine
2660 arch_default=$(uname -m)
2661 cpu="generic"
2662 intrinsics="none"
2663
2664 # OS
2665 target_os_default=$(tolower $(uname -s))
2666 host_os=$target_os_default
2667
2668 # configurable options
2669 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2670
2671 enable asm
2672 enable debug
2673 enable doc
2674 enable faan faandct faanidct
2675 enable optimizations
2676 enable safe_bitstream_reader
2677 enable static
2678 enable swscale_alpha
2679 enable valgrind_backtrace
2680
2681 # By default, enable only those hwaccels that have no external dependencies.
2682 enable d3d11va dxva2 vda vdpau
2683
2684 # internal components are enabled by default
2685 enable $EXTRALIBS_LIST
2686
2687 # Avoid external, non-system, libraries getting enabled by dependency resolution
2688 disable $EXTERNAL_LIBRARY_LIST
2689
2690 # build settings
2691 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2692 LIBPREF="lib"
2693 LIBSUF=".a"
2694 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2695 SLIBPREF="lib"
2696 SLIBSUF=".so"
2697 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2698 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2699 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2700 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2701 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2702 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2703 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2704
2705 asflags_filter=echo
2706 cflags_filter=echo
2707 ldflags_filter=echo
2708
2709 AS_C='-c'
2710 AS_O='-o $@'
2711 CC_C='-c'
2712 CC_E='-E -o $@'
2713 CC_O='-o $@'
2714 OBJCC_C='-c'
2715 OBJCC_E='-E -o $@'
2716 OBJCC_O='-o $@'
2717 X86ASM_O='-o $@'
2718 LD_O='-o $@'
2719 LD_LIB='-l%'
2720 LD_PATH='-L'
2721 HOSTCC_C='-c'
2722 HOSTCC_E='-E -o $@'
2723 HOSTCC_O='-o $@'
2724 HOSTLD_O='-o $@'
2725
2726 host_extralibs='-lm'
2727 host_cflags_filter=echo
2728 host_ldflags_filter=echo
2729
2730 target_path='$(CURDIR)'
2731
2732 # since the object filename is not given with the -MM flag, the compiler
2733 # is only able to print the basename, and we must add the path ourselves
2734 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2735 DEPFLAGS='-MM'
2736
2737 mkdir -p avbuild
2738
2739 # find source path
2740 if test -f configure; then
2741     source_path=.
2742 else
2743     source_path=$(cd $(dirname "$0"); pwd)
2744     echo "$source_path" | grep -q '[[:blank:]]' &&
2745         die "Out of tree builds are impossible with whitespace in source path."
2746     test -e "$source_path/config.h" &&
2747         die "Out of tree builds are impossible with config.h in source dir."
2748 fi
2749
2750 for v in "$@"; do
2751     r=${v#*=}
2752     l=${v%"$r"}
2753     r=$(sh_quote "$r")
2754     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2755 done
2756
2757 find_things(){
2758     thing=$1
2759     pattern=$2
2760     file=$source_path/$3
2761     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2762 }
2763
2764 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2765 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2766 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2767 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2768 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2769 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2770 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2771
2772 find_things_extern(){
2773     thing=$1
2774     pattern=$2
2775     file=$source_path/$3
2776     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2777 }
2778
2779 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2780 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
2781 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2782
2783 AVCODEC_COMPONENTS_LIST="
2784     $BSF_LIST
2785     $DECODER_LIST
2786     $ENCODER_LIST
2787     $HWACCEL_LIST
2788     $PARSER_LIST
2789 "
2790
2791 AVDEVICE_COMPONENTS_LIST="
2792     $INDEV_LIST
2793 "
2794
2795 AVFILTER_COMPONENTS_LIST="
2796     $FILTER_LIST
2797 "
2798
2799 AVFORMAT_COMPONENTS_LIST="
2800     $DEMUXER_LIST
2801     $MUXER_LIST
2802     $PROTOCOL_LIST
2803 "
2804
2805 ALL_COMPONENTS="
2806     $AVCODEC_COMPONENTS_LIST
2807     $AVDEVICE_COMPONENTS_LIST
2808     $AVFILTER_COMPONENTS_LIST
2809     $AVFORMAT_COMPONENTS_LIST
2810 "
2811
2812 for n in $COMPONENT_LIST; do
2813     v=$(toupper ${n%s})_LIST
2814     eval enable \$$v
2815     eval ${n}_if_any="\$$v"
2816 done
2817
2818 enable $ARCH_EXT_LIST
2819
2820 die_unknown(){
2821     echo "Unknown option \"$1\"."
2822     echo "See $0 --help for available options."
2823     exit 1
2824 }
2825
2826 print_3_columns() {
2827     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2828 }
2829
2830 show_list() {
2831     suffix=_$1
2832     shift
2833     echo $* | sed s/$suffix//g | print_3_columns
2834     exit 0
2835 }
2836
2837 for opt do
2838     optval="${opt#*=}"
2839     case "$opt" in
2840         --extra-ldflags=*)
2841             add_ldflags $optval
2842         ;;
2843         --extra-ldexeflags=*)
2844             add_ldexeflags $optval
2845         ;;
2846         --extra-ldsoflags=*)
2847             add_ldsoflags $optval
2848         ;;
2849         --extra-libs=*)
2850             add_extralibs $optval
2851         ;;
2852         --disable-devices)
2853             disable $INDEV_LIST
2854         ;;
2855         --enable-debug=*)
2856             debuglevel="$optval"
2857         ;;
2858         --disable-programs)
2859             disable $PROGRAM_LIST
2860         ;;
2861         --disable-everything)
2862             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2863         ;;
2864         --disable-all)
2865             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2866             disable $LIBRARY_LIST $PROGRAM_LIST doc
2867         ;;
2868         --enable-*=*|--disable-*=*)
2869             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2870             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2871             eval list=\$$(toupper $thing)_LIST
2872             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2873             $action $(filter "$name" $list)
2874         ;;
2875         --enable-yasm|--disable-yasm)
2876             warn "The ${opt} option is only provided for compatibility and will be\n"\
2877                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
2878             test $opt = --enable-yasm && x86asm=yes || x86asm=no
2879         ;;
2880         --enable-?*|--disable-?*)
2881             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2882             if is_in $option $COMPONENT_LIST; then
2883                 test $action = disable && action=unset
2884                 eval $action \$$(toupper ${option%s})_LIST
2885             elif is_in $option $CMDLINE_SELECT; then
2886                 $action $option
2887             else
2888                 die_unknown $opt
2889             fi
2890         ;;
2891         --list-*)
2892             NAME="${opt#--list-}"
2893             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2894             NAME=${NAME%s}
2895             eval show_list $NAME \$$(toupper $NAME)_LIST
2896         ;;
2897         --help|-h) show_help
2898         ;;
2899         --quiet|-q) quiet=yes
2900         ;;
2901         *)
2902             optname="${opt%%=*}"
2903             optname="${optname#--}"
2904             optname=$(echo "$optname" | sed 's/-/_/g')
2905             if is_in $optname $CMDLINE_SET; then
2906                 eval $optname='$optval'
2907             elif is_in $optname $CMDLINE_APPEND; then
2908                 append $optname "$optval"
2909             else
2910                 die_unknown $opt
2911             fi
2912         ;;
2913     esac
2914 done
2915
2916 for e in $env; do
2917     eval "export $e"
2918 done
2919
2920 disabled logging && logfile=/dev/null
2921
2922 # command line configuration sanity checks
2923
2924 # we need to build at least one lib type
2925 if ! enabled_any static shared; then
2926     cat <<EOF
2927 At least one library type must be built.
2928 Specify --enable-static to build the static libraries or --enable-shared to
2929 build the shared libraries as well. To only build the shared libraries specify
2930 --disable-static in addition to --enable-shared.
2931 EOF
2932     exit 1
2933 fi
2934
2935 # Die early if licensing-related configure options are incompatible.
2936 die_license_disabled() {
2937     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2938 }
2939
2940 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2941 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2942 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2943
2944 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2945
2946 if enabled nonfree; then
2947     license="nonfree and unredistributable"
2948 elif enabled gplv3; then
2949     license="GPL version 3 or later"
2950 elif enabled lgplv3; then
2951     license="LGPL version 3 or later"
2952 elif enabled gpl; then
2953     license="GPL version 2 or later"
2954 else
2955     license="LGPL version 2.1 or later"
2956 fi
2957
2958 enabled_all gnutls openssl &&
2959     die "GnuTLS and OpenSSL must not be enabled at the same time."
2960
2961 # Disable all the library-specific components if the library itself
2962 # is disabled, see AVCODEC_LIST and following _LIST variables.
2963
2964 disable_components(){
2965     disabled ${1} && disable $(
2966         eval components="\$$(toupper ${1})_COMPONENTS"
2967         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2968     )
2969 }
2970
2971 map 'disable_components $v' $LIBRARY_LIST
2972
2973 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2974 set >> $logfile
2975
2976 case "$toolchain" in
2977     *-asan)
2978         cc_default="${toolchain%-asan}"
2979         add_cflags  -fsanitize=address
2980         add_ldflags -fsanitize=address
2981     ;;
2982     *-msan)
2983         cc_default="${toolchain%-msan}"
2984         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2985         add_ldflags -fsanitize=memory
2986     ;;
2987     *-tsan)
2988         cc_default="${toolchain%-tsan}"
2989         add_cflags  -fsanitize=thread -fPIE
2990         add_ldflags -fsanitize=thread -pie
2991         case "$toolchain" in
2992             gcc-tsan)
2993                 add_cflags  -fPIC
2994                 add_ldflags -fPIC
2995                 ;;
2996         esac
2997     ;;
2998     *-usan)
2999         cc_default="${toolchain%-usan}"
3000         add_cflags  -fsanitize=undefined
3001         add_ldflags -fsanitize=undefined
3002         case "$toolchain" in
3003             clang-usan)
3004                 add_cflags -O1
3005                 ;;
3006         esac
3007     ;;
3008     valgrind-*)
3009         target_exec_default="valgrind"
3010         case "$toolchain" in
3011             valgrind-massif)
3012                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
3013                 ;;
3014             valgrind-memcheck)
3015                 target_exec_args="--track-origins=yes --leak-check=full"
3016                 ;;
3017         esac
3018     ;;
3019     msvc)
3020         # Check whether the current MSVC version needs the C99 converter.
3021         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3022         # support enough of C99 to build libav. Default to the new
3023         # behaviour if the regexp was unable to match anything, since this
3024         # successfully parses the version number of existing supported
3025         # versions that require the converter (MSVC 2010 and 2012).
3026         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3027         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3028             cc_default="cl"
3029         else
3030             cc_default="c99wrap cl"
3031         fi
3032         ld_default="$source_path/compat/windows/mslink"
3033         nm_default="dumpbin -symbols"
3034         ar_default="lib"
3035         case "$arch" in
3036         aarch64|arm64)
3037             as_default="armasm64"
3038             ;;
3039         arm*)
3040             as_default="armasm"
3041             ;;
3042         esac
3043         target_os_default="win32"
3044         # Use a relative path for TMPDIR. This makes sure all the
3045         # ffconf temp files are written with a relative path, avoiding
3046         # issues with msys/win32 path conversion for MSVC parameters
3047         # such as -Fo<file> or -out:<file>.
3048         TMPDIR=.
3049     ;;
3050     icl)
3051         cc_default="icl"
3052         ld_default="xilink"
3053         nm_default="dumpbin -symbols"
3054         ar_default="xilib"
3055         target_os_default="win32"
3056         TMPDIR=.
3057     ;;
3058     gcov)
3059         add_cflags  -fprofile-arcs -ftest-coverage
3060         add_ldflags -fprofile-arcs -ftest-coverage
3061     ;;
3062     llvm-cov)
3063         add_cflags -fprofile-arcs -ftest-coverage
3064         add_ldflags --coverage
3065     ;;
3066     hardened)
3067         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3068         add_cflags   -fno-strict-overflow -fstack-protector-all
3069         add_ldflags  -Wl,-z,relro -Wl,-z,now
3070     ;;
3071     ?*)
3072         die "Unknown toolchain $toolchain"
3073     ;;
3074 esac
3075
3076 if test -n "$cross_prefix"; then
3077     test -n "$arch" && test -n "$target_os" ||
3078         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3079     enable cross_compile
3080 fi
3081
3082 ar_default="${cross_prefix}${ar_default}"
3083 cc_default="${cross_prefix}${cc_default}"
3084 objcc_default="${cross_prefix}${objcc_default}"
3085 x86asmexe_default="${cross_prefix}${x86asmexe_default}"
3086 nm_default="${cross_prefix}${nm_default}"
3087 pkg_config_default="${cross_prefix}${pkg_config_default}"
3088 ranlib="${cross_prefix}${ranlib}"
3089 strip="${cross_prefix}${strip}"
3090
3091 sysinclude_default="${sysroot}/usr/include"
3092
3093 set_default arch cc pkg_config sysinclude target_exec target_os x86asmexe
3094 enabled cross_compile || host_cc_default=$cc
3095 set_default host_cc
3096
3097 if ! $pkg_config --version >/dev/null 2>&1; then
3098     warn "$pkg_config not found, library detection may fail."
3099     pkg_config=false
3100 fi
3101
3102 exesuf() {
3103     case $1 in
3104         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3105     esac
3106 }
3107
3108 EXESUF=$(exesuf $target_os)
3109 HOSTEXESUF=$(exesuf $host_os)
3110
3111 # set temporary file name
3112 : ${TMPDIR:=$TEMPDIR}
3113 : ${TMPDIR:=$TMP}
3114 : ${TMPDIR:=/tmp}
3115
3116 if ! test_cmd mktemp -u XXXXXX; then
3117     # simple replacement for missing mktemp
3118     # NOT SAFE FOR GENERAL USE
3119     mktemp(){
3120         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3121         echo "$tmpname"
3122         mkdir "$tmpname"
3123     }
3124 fi
3125
3126 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
3127     die "Unable to create temporary directory in $TMPDIR."
3128
3129 tmpfile(){
3130     tmp="${AVTMPDIR}/test"$2
3131     (set -C; exec > $tmp) 2> /dev/null ||
3132         die "Unable to create temporary file in $AVTMPDIR."
3133     eval $1=$tmp
3134 }
3135
3136 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3137 trap 'exit 2' INT
3138
3139 tmpfile TMPASM .asm
3140 tmpfile TMPC   .c
3141 tmpfile TMPE   $EXESUF
3142 tmpfile TMPH   .h
3143 tmpfile TMPO   .o
3144 tmpfile TMPS   .S
3145 tmpfile TMPSH  .sh
3146 tmpfile TMPV   .ver
3147
3148 unset -f mktemp
3149
3150 chmod +x $TMPE
3151
3152 # make sure we can execute files in $TMPDIR
3153 cat > $TMPSH 2>> $logfile <<EOF
3154 #! /bin/sh
3155 EOF
3156 chmod +x $TMPSH >> $logfile 2>&1
3157 if ! $TMPSH >> $logfile 2>&1; then
3158     cat <<EOF
3159 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3160 variable to another directory and make sure that it is not mounted noexec.
3161 EOF
3162     die "Sanity test failed."
3163 fi
3164
3165 armasm_flags(){
3166     for flag; do
3167         case $flag in
3168             # Filter out MSVC cl.exe options from cflags that shouldn't
3169             # be passed to gas-preprocessor
3170             -M[TD]*)                                            ;;
3171             *)                  echo $flag                      ;;
3172         esac
3173    done
3174 }
3175
3176 cparser_flags(){
3177     for flag; do
3178         case $flag in
3179             -Wno-switch)             echo -Wno-switch-enum ;;
3180             -Wno-format-zero-length) ;;
3181             -Wdisabled-optimization) ;;
3182             -Wno-pointer-sign)       echo -Wno-other ;;
3183             *)                       echo $flag ;;
3184         esac
3185     done
3186 }
3187
3188 msvc_common_flags(){
3189     for flag; do
3190         case $flag in
3191             # In addition to specifying certain flags under the compiler
3192             # specific filters, they must be specified here as well or else the
3193             # generic catch all at the bottom will print the original flag.
3194             -Wall)                ;;
3195             -Wextra)              ;;
3196             -std=c99)             ;;
3197             # Common flags
3198             -fomit-frame-pointer) ;;
3199             -g)                   echo -Z7 ;;
3200             -fno-math-errno)      ;;
3201             -fno-common)          ;;
3202             -fno-signed-zeros)    ;;
3203             -fPIC)                ;;
3204             -mthumb)              ;;
3205             -march=*)             ;;
3206             -lz)                  echo zlib.lib ;;
3207             -lx264)               echo libx264.lib ;;
3208             -l*)                  echo ${flag#-l}.lib ;;
3209             -L*)                  echo -libpath:${flag#-L} ;;
3210             *)                    echo $flag ;;
3211         esac
3212     done
3213 }
3214
3215 msvc_flags(){
3216     msvc_common_flags "$@"
3217     for flag; do
3218         case $flag in
3219             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3220                                        -wd4554 ;;
3221             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3222                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3223                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3224                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3225         esac
3226     done
3227 }
3228
3229 icl_flags(){
3230     msvc_common_flags "$@"
3231     for flag; do
3232         case $flag in
3233             # Despite what Intel's documentation says -Wall, which is supported
3234             # on Windows, does enable remarks so disable them here.
3235             -Wall)                echo $flag -Qdiag-disable:remark ;;
3236             -std=c99)             echo -Qstd=c99 ;;
3237         esac
3238     done
3239 }
3240
3241 suncc_flags(){
3242     for flag; do
3243         case $flag in
3244             -march=*|-mcpu=*)
3245                 case "${flag#*=}" in
3246                     native)                   echo -xtarget=native       ;;
3247                     v9|niagara)               echo -xarch=sparc          ;;
3248                     ultrasparc)               echo -xarch=sparcvis       ;;
3249                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3250                     i586|pentium)             echo -xchip=pentium        ;;
3251                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3252                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3253                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3254                     pentium4*)          echo -xtarget=pentium4           ;;
3255                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3256                     *-sse3)             echo -xarch=sse3                 ;;
3257                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3258                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3259                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3260                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3261                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3262                     k8|opteron|athlon64|athlon-fx)
3263                                                echo -xarch=sse2a         ;;
3264                     athlon*)                   echo -xarch=pentium_proa  ;;
3265                 esac
3266                 ;;
3267             -std=c99)             echo -xc99              ;;
3268             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3269             -fPIC)                echo -KPIC -xcode=pic32 ;;
3270             -W*,*)                echo $flag              ;;
3271             -f*-*|-W*|-mimpure-text)                      ;;
3272             -shared)              echo -G                 ;;
3273             *)                    echo $flag              ;;
3274         esac
3275     done
3276 }
3277
3278 probe_cc(){
3279     pfx=$1
3280     _cc=$2
3281
3282     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3283     unset _ld_o _ldflags _ld_lib _ld_path
3284     unset _depflags _DEPCMD _DEPFLAGS
3285     _flags_filter=echo
3286
3287     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3288         _type=llvm_gcc
3289         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3290         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3291         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3292         _cflags_speed='-O3'
3293         _cflags_size='-Os'
3294     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3295         _type=gcc
3296         gcc_version=$($_cc --version | head -n1)
3297         gcc_basever=$($_cc -dumpversion)
3298         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3299         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3300         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3301         if ! $_cc -dumpversion | grep -q '^2\.'; then
3302             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3303         fi
3304         _cflags_speed='-O3'
3305         _cflags_size='-Os'
3306     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3307         _type=icc
3308         _ident=$($_cc --version | head -n1)
3309         _depflags='-MMD'
3310         _cflags_speed='-O3'
3311         _cflags_size='-Os'
3312         _cflags_noopt='-O1'
3313     elif $_cc -v 2>&1 | grep -q xlc; then
3314         _type=xlc
3315         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3316         _cflags_speed='-O5'
3317         _cflags_size='-O5 -qcompact'
3318     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3319         test -d "$sysroot" || die "No valid sysroot specified."
3320         _type=armcc
3321         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3322         armcc_conf="$PWD/armcc.conf"
3323         $_cc --arm_linux_configure                 \
3324              --arm_linux_config_file="$armcc_conf" \
3325              --configure_sysroot="$sysroot"        \
3326              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3327              die "Error creating armcc configuration file."
3328         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3329         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3330         as_default="${cross_prefix}gcc"
3331         _depflags='-MMD'
3332         _cflags_speed='-O3'
3333         _cflags_size='-Os'
3334     elif $_cc -v 2>&1 | grep -q clang; then
3335         _type=clang
3336         _ident=$($_cc --version 2>/dev/null | head -n1)
3337         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3338         _cflags_speed='-O3'
3339         _cflags_size='-Os'
3340     elif $_cc -V 2>&1 | grep -q Sun; then
3341         _type=suncc
3342         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3343         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3344         _DEPFLAGS='-xM1 -xc99'
3345         _ldflags='-std=c99'
3346         _cflags_speed='-O5'
3347         _cflags_size='-O5 -xspace'
3348         _flags_filter=suncc_flags
3349     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3350         _type=pathscale
3351         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3352         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3353         _cflags_speed='-O2'
3354         _cflags_size='-Os'
3355         _flags_filter='filter_out -Wdisabled-optimization'
3356     elif $_cc -v 2>&1 | grep -q Open64; then
3357         _type=open64
3358         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3359         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3360         _cflags_speed='-O2'
3361         _cflags_size='-Os'
3362         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3363     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3364         _type=armasm
3365         _ident=$($_cc | head -n1)
3366         # 4509: "This form of conditional instruction is deprecated"
3367         _flags="-nologo -ignore 4509"
3368         _flags_filter=armasm_flags
3369     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3370         _type=msvc
3371         _ident=$($_cc 2>&1 | head -n1)
3372         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3373         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3374         _cflags_speed="-O2"
3375         _cflags_size="-O1"
3376         _cflags_noopt="-O1"
3377         if $_cc -nologo- 2>&1 | grep -q Linker; then
3378             _ld_o='-out:$@'
3379         else
3380             _ld_o='-Fe$@'
3381         fi
3382         _cc_o='-Fo$@'
3383         _cc_e='-P -Fi$@'
3384         _flags_filter=msvc_flags
3385         _ld_lib='lib%.a'
3386         _ld_path='-libpath:'
3387         _flags='-nologo'
3388     elif $_cc 2>&1 | grep -q Intel; then
3389         _type=icl
3390         _ident=$($_cc 2>&1 | head -n1)
3391         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3392         # Not only is O3 broken on 13.x+ but it is slower on all previous
3393         # versions (tested) as well.
3394         _cflags_speed="-O2"
3395         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3396         if $_cc 2>&1 | grep -q Linker; then
3397             _ld_o='-out:$@'
3398         else
3399             _ld_o='-Fe$@'
3400         fi
3401         _cc_o='-Fo$@'
3402         _cc_e='-P'
3403         _flags_filter=icl_flags
3404         _ld_lib='lib%.a'
3405         _ld_path='-libpath:'
3406         # -Qdiag-error to make icl error when seeing certain unknown arguments
3407         _flags='-nologo -Qdiag-error:4044,10157'
3408         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3409         # with MSVC which enables it by default.
3410         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3411     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3412         # lld can emulate multiple different linkers; in ms link.exe mode,
3413         # the -? parameter gives the help output which contains an identifyable
3414         # string, while it gives an error in other modes.
3415         _type=lld-link
3416         # The link.exe mode doesn't have a switch for getting the version,
3417         # but we can force it back to gnu mode and get the version from there.
3418         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3419         _ld_o='-out:$@'
3420         _flags_filter=msvc_flags
3421         _ld_lib='lib%.a'
3422         _ld_path='-libpath:'
3423     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3424         _type=cparser
3425         _ident=$($_cc --version | head -n1)
3426         _depflags='-MMD'
3427         _cflags_speed='-O4'
3428         _cflags_size='-O2'
3429         _flags_filter=cparser_flags
3430     fi
3431
3432     eval ${pfx}_type=\$_type
3433     eval ${pfx}_ident=\$_ident
3434 }
3435
3436 set_ccvars(){
3437     eval ${1}_C=\${_cc_c-\${${1}_C}}
3438     eval ${1}_E=\${_cc_e-\${${1}_E}}
3439     eval ${1}_O=\${_cc_o-\${${1}_O}}
3440
3441     if [ -n "$_depflags" ]; then
3442         eval ${1}_DEPFLAGS=\$_depflags
3443     else
3444         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3445         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3446         eval DEP${1}FLAGS=\$_flags
3447     fi
3448 }
3449
3450 probe_cc cc "$cc"
3451 cflags_filter=$_flags_filter
3452 cflags_speed=$_cflags_speed
3453 cflags_size=$_cflags_size
3454 cflags_noopt=$_cflags_noopt
3455 add_cflags $_flags $_cflags
3456 cc_ldflags=$_ldflags
3457 set_ccvars CC
3458
3459 probe_cc hostcc "$host_cc"
3460 host_cflags_filter=$_flags_filter
3461 host_cflags_speed=$_cflags_speed
3462 add_host_cflags  $_flags $_cflags
3463 set_ccvars HOSTCC
3464
3465 test -n "$cc_type" && enable $cc_type ||
3466     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3467
3468 : ${as_default:=$cc}
3469 : ${objcc_default:=$cc}
3470 : ${dep_cc_default:=$cc}
3471 : ${ld_default:=$cc}
3472 : ${host_ld_default:=$host_cc}
3473 set_default ar as objcc dep_cc ld host_ld
3474
3475 probe_cc as "$as"
3476 asflags_filter=$_flags_filter
3477 add_asflags $_flags $_cflags
3478 set_ccvars AS
3479
3480 probe_cc objcc "$objcc"
3481 objcflags_filter=$_flags_filter
3482 add_objcflags $_flags $_cflags
3483 set_ccvars OBJC
3484
3485 probe_cc ld "$ld"
3486 ldflags_filter=$_flags_filter
3487 add_ldflags $_flags $_ldflags
3488 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3489 LD_O=${_ld_o-$LD_O}
3490 LD_LIB=${_ld_lib-$LD_LIB}
3491 LD_PATH=${_ld_path-$LD_PATH}
3492
3493 probe_cc hostld "$host_ld"
3494 host_ldflags_filter=$_flags_filter
3495 add_host_ldflags $_flags $_ldflags
3496 HOSTLD_O=${_ld_o-$HOSTLD_O}
3497
3498 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3499     probe_cc depcc "$dep_cc"
3500     CCDEP=${_DEPCMD:-$DEPCMD}
3501     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3502     DEPCCFLAGS=$_flags
3503 fi
3504
3505 if $ar 2>&1 | grep -q Microsoft; then
3506     arflags="-nologo"
3507     ar_o='-out:$@'
3508 else
3509     arflags="rc"
3510     ar_o='$@'
3511 fi
3512
3513 add_cflags $extra_cflags
3514 add_objcflags $extra_objcflags
3515 add_asflags $extra_cflags
3516
3517 if test -n "$sysroot"; then
3518     case "$cc_type" in
3519         gcc|llvm_gcc|clang)
3520             add_cppflags --sysroot="$sysroot"
3521             add_ldflags --sysroot="$sysroot"
3522         ;;
3523     esac
3524 fi
3525
3526 if test "$cpu" = host; then
3527     enabled cross_compile &&
3528         die "--cpu=host makes no sense when cross-compiling."
3529
3530     case "$cc_type" in
3531         gcc|llvm_gcc)
3532             check_native(){
3533                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3534                 sed -n "/cc1.*$1=/{
3535                             s/.*$1=\\([^ ]*\\).*/\\1/
3536                             p
3537                             q
3538                         }" $TMPE
3539             }
3540             cpu=$(check_native -march || check_native -mcpu)
3541         ;;
3542     esac
3543
3544     test "${cpu:-host}" = host &&
3545         die "--cpu=host not supported with compiler $cc"
3546 fi
3547
3548 # Deal with common $arch aliases
3549 case "$arch" in
3550     aarch64|arm64)
3551         arch="aarch64"
3552     ;;
3553     arm*)
3554         arch="arm"
3555     ;;
3556     mips*|IP*)
3557         case "$arch" in
3558         *el)
3559             add_cppflags -EL
3560             add_ldflags -EL
3561         ;;
3562         *eb)
3563             add_cppflags -EB
3564             add_ldflags -EB
3565         ;;
3566         esac
3567         arch="mips"
3568     ;;
3569     parisc*|hppa*)
3570         arch="parisc"
3571     ;;
3572     "Power Macintosh"|ppc*|powerpc*)
3573         arch="ppc"
3574     ;;
3575     s390|s390x)
3576         arch="s390"
3577     ;;
3578     sh4|sh)
3579         arch="sh4"
3580     ;;
3581     sun4u|sparc*)
3582         arch="sparc"
3583     ;;
3584     tilegx|tile-gx)
3585         arch="tilegx"
3586     ;;
3587     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3588         arch="x86"
3589     ;;
3590 esac
3591
3592 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3593 enable $arch
3594
3595 # Add processor-specific flags
3596 if enabled aarch64; then
3597
3598     case $cpu in
3599         armv*)
3600             cpuflags="-march=$cpu"
3601         ;;
3602         *)
3603             cpuflags="-mcpu=$cpu"
3604         ;;
3605     esac
3606
3607 elif enabled alpha; then
3608
3609     cpuflags="-mcpu=$cpu"
3610
3611 elif enabled arm; then
3612
3613     check_arm_arch() {
3614         test_cpp_condition stddef.h \
3615             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3616             $cpuflags
3617     }
3618
3619     probe_arm_arch() {
3620         if   check_arm_arch 4;        then echo armv4
3621         elif check_arm_arch 4T;       then echo armv4t
3622         elif check_arm_arch 5;        then echo armv5
3623         elif check_arm_arch 5E;       then echo armv5e
3624         elif check_arm_arch 5T;       then echo armv5t
3625         elif check_arm_arch 5TE;      then echo armv5te
3626         elif check_arm_arch 5TEJ;     then echo armv5te
3627         elif check_arm_arch 6;        then echo armv6
3628         elif check_arm_arch 6J;       then echo armv6j
3629         elif check_arm_arch 6K;       then echo armv6k
3630         elif check_arm_arch 6Z;       then echo armv6z
3631         elif check_arm_arch 6ZK;      then echo armv6zk
3632         elif check_arm_arch 6T2;      then echo armv6t2
3633         elif check_arm_arch 7;        then echo armv7
3634         elif check_arm_arch 7A  7_A;  then echo armv7-a
3635         elif check_arm_arch 7S;       then echo armv7-a
3636         elif check_arm_arch 7R  7_R;  then echo armv7-r
3637         elif check_arm_arch 7M  7_M;  then echo armv7-m
3638         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3639         elif check_arm_arch 8A  8_A;  then echo armv8-a
3640         fi
3641     }
3642
3643     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3644
3645     case $cpu in
3646         armv*)
3647             cpuflags="-march=$cpu"
3648             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3649         ;;
3650         *)
3651             cpuflags="-mcpu=$cpu"
3652             case $cpu in
3653                 cortex-a*)                               subarch=armv7a  ;;
3654                 cortex-r*)                               subarch=armv7r  ;;
3655                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3656                 arm11*)                                  subarch=armv6   ;;
3657                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3658                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3659                 *)                             subarch=$(probe_arm_arch) ;;
3660             esac
3661         ;;
3662     esac
3663
3664     case "$subarch" in
3665         armv5t*)    enable fast_clz                ;;
3666         armv[6-8]*) enable fast_clz fast_unaligned ;;
3667     esac
3668
3669 elif enabled avr32; then
3670
3671     case $cpu in
3672         ap7[02]0[0-2])
3673             subarch="avr32_ap"
3674             cpuflags="-mpart=$cpu"
3675         ;;
3676         ap)
3677             subarch="avr32_ap"
3678             cpuflags="-march=$cpu"
3679         ;;
3680         uc3[ab]*)
3681             subarch="avr32_uc"
3682             cpuflags="-mcpu=$cpu"
3683         ;;
3684         uc)
3685             subarch="avr32_uc"
3686             cpuflags="-march=$cpu"
3687         ;;
3688     esac
3689
3690 elif enabled bfin; then
3691
3692     cpuflags="-mcpu=$cpu"
3693
3694 elif enabled mips; then
3695
3696     cpuflags="-march=$cpu"
3697
3698 elif enabled ppc; then
3699
3700     disable ldbrx
3701
3702     case $(tolower $cpu) in
3703         601|ppc601|powerpc601)
3704             cpuflags="-mcpu=601"
3705             disable altivec
3706         ;;
3707         603*|ppc603*|powerpc603*)
3708             cpuflags="-mcpu=603"
3709             disable altivec
3710         ;;
3711         604*|ppc604*|powerpc604*)
3712             cpuflags="-mcpu=604"
3713             disable altivec
3714         ;;
3715         g3|75*|ppc75*|powerpc75*)
3716             cpuflags="-mcpu=750"
3717             disable altivec
3718         ;;
3719         g4|745*|ppc745*|powerpc745*)
3720             cpuflags="-mcpu=7450"
3721             disable vsx
3722         ;;
3723         74*|ppc74*|powerpc74*)
3724             cpuflags="-mcpu=7400"
3725             disable vsx
3726         ;;
3727         g5|970|ppc970|powerpc970)
3728             cpuflags="-mcpu=970"
3729             disable vsx
3730         ;;
3731         power[3-6]*)
3732             cpuflags="-mcpu=$cpu"
3733             disable vsx
3734         ;;
3735         power[7-8]*)
3736             cpuflags="-mcpu=$cpu"
3737             enable ldbrx
3738         ;;
3739         cell)
3740             cpuflags="-mcpu=cell"
3741             enable ldbrx
3742             disable vsx
3743         ;;
3744         e500mc)
3745             cpuflags="-mcpu=e500mc"
3746             disable altivec
3747         ;;
3748         e500v2)
3749             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3750             disable altivec
3751             disable dcbzl
3752         ;;
3753         e500)
3754             cpuflags="-mcpu=8540 -mhard-float"
3755             disable altivec
3756             disable dcbzl
3757         ;;
3758     esac
3759
3760 elif enabled sparc; then
3761
3762     case $cpu in
3763         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3764             cpuflags="-mcpu=$cpu"
3765         ;;
3766         ultrasparc*|niagara[234])
3767             cpuflags="-mcpu=$cpu"
3768         ;;
3769     esac
3770
3771 elif enabled x86; then
3772
3773     case $cpu in
3774         i[345]86|pentium)
3775             cpuflags="-march=$cpu"
3776             disable i686
3777             disable mmx
3778         ;;
3779         # targets that do NOT support nopl and conditional mov (cmov)
3780         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3781             cpuflags="-march=$cpu"
3782             disable i686
3783         ;;
3784         # targets that do support nopl and conditional mov (cmov)
3785         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3786             cpuflags="-march=$cpu"
3787             enable i686
3788             enable fast_cmov
3789         ;;
3790         # targets that do support conditional mov but on which it's slow
3791         pentium4|pentium4m|prescott|nocona)
3792             cpuflags="-march=$cpu"
3793             enable i686
3794             disable fast_cmov
3795         ;;
3796     esac
3797
3798 fi
3799
3800 if [ "$cpu" != generic ]; then
3801     add_cflags  $cpuflags
3802     add_asflags $cpuflags
3803     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3804 fi
3805
3806 # compiler sanity check
3807 test_exec <<EOF
3808 int main(void){ return 0; }
3809 EOF
3810 if test "$?" != 0; then
3811     echo "$cc is unable to create an executable file."
3812     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3813         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3814         echo "Only do this if you know what cross compiling means."
3815     fi
3816     die "C compiler test failed."
3817 fi
3818
3819 add_cppflags -D_ISOC99_SOURCE
3820
3821 # some compilers silently accept -std=c11, so we also need to check that the
3822 # version macro is defined properly
3823 test_cpp_condition stdlib.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
3824     add_cflags -std=c11 ||
3825     check_cflags -std=c99
3826
3827 check_cppflags -D_FILE_OFFSET_BITS=64
3828 check_cppflags -D_LARGEFILE_SOURCE
3829
3830 add_host_cppflags -D_ISOC99_SOURCE
3831 check_host_cflags -std=c99
3832 check_host_cflags -Wall
3833 check_host_cflags $host_cflags_speed
3834
3835 check_64bit(){
3836     arch32=$1
3837     arch64=$2
3838     expr=${3:-'sizeof(void *) > 4'}
3839     test_code cc "" "int test[2*($expr) - 1]" &&
3840         subarch=$arch64 || subarch=$arch32
3841     enable $subarch
3842 }
3843
3844 case "$arch" in
3845     aarch64|alpha|ia64)
3846         enabled shared && enable_weak pic
3847     ;;
3848     mips)
3849         check_64bit mips mips64 '_MIPS_SIM > 1'
3850         enabled shared && enable_weak pic
3851     ;;
3852     parisc)
3853         check_64bit parisc parisc64
3854         enabled shared && enable_weak pic
3855     ;;
3856     ppc)
3857         check_64bit ppc ppc64
3858         enabled shared && enable_weak pic
3859     ;;
3860     s390)
3861         check_64bit s390 s390x
3862         enabled shared && enable_weak pic
3863     ;;
3864     sparc)
3865         check_64bit sparc sparc64
3866         enabled shared && enable_weak pic
3867     ;;
3868     x86)
3869         check_64bit x86_32 x86_64
3870         if enabled x86_64; then
3871             enabled shared && enable_weak pic
3872             objformat=elf64
3873         fi
3874     ;;
3875 esac
3876
3877 # OS specific
3878 case $target_os in
3879     aix)
3880         SHFLAGS=-shared
3881         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3882         enabled shared && add_ldflags -Wl,-brtl
3883         arflags='-Xany -r -c'
3884         ;;
3885     android)
3886         disable symver
3887         enable section_data_rel_ro
3888         SLIB_INSTALL_NAME='$(SLIBNAME)'
3889         SLIB_INSTALL_LINKS=
3890         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3891         ;;
3892     haiku)
3893         prefix_default="/boot/common"
3894         network_extralibs="-lnetwork"
3895         host_extralibs=
3896         ;;
3897     sunos)
3898         SHFLAGS='-shared -Wl,-h,$$(@F)'
3899         enabled x86 && append SHFLAGS -mimpure-text
3900         network_extralibs="-lsocket -lnsl"
3901         # When using suncc to build, the Solaris linker will mark
3902         # an executable with each instruction set encountered by
3903         # the Solaris assembler.  As our libraries contain their own
3904         # guards for processor-specific code, instead suppress
3905         # generation of the HWCAPS ELF section on Solaris x86 only.
3906         enabled_all suncc x86 &&
3907             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3908             add_ldflags -Wl,-M,mapfile
3909         nm_default='nm -P -g'
3910         version_script='-M'
3911         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3912         ;;
3913     netbsd)
3914         disable symver
3915         oss_indev_extralibs="-lossaudio"
3916         ;;
3917     openbsd|bitrig)
3918         disable symver
3919         SHFLAGS='-shared'
3920         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3921         SLIB_INSTALL_LINKS=
3922         oss_indev_extralibs="-lossaudio"
3923         ;;
3924     dragonfly)
3925         disable symver
3926         ;;
3927     freebsd)
3928         ;;
3929     bsd/os)
3930         add_extralibs -lpoll -lgnugetopt
3931         ;;
3932     darwin)
3933         enabled ppc && add_asflags -force_cpusubtype_ALL
3934         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3935         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3936         add_ldflags -Wl,-dynamic,-search_paths_first
3937         check_cflags -Werror=partial-availability
3938         SLIBSUF=".dylib"
3939         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3940         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3941         enabled x86_64 && objformat="macho64" || objformat="macho32"
3942         enabled_any pic shared ||
3943             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3944         check_header dispatch/dispatch.h &&
3945             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3946         if test -n "$sysroot"; then
3947             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
3948             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
3949         fi
3950         ;;
3951     msys*)
3952         die "Native MSYS builds are discouraged, please use the MINGW environment."
3953         ;;
3954     mingw32*|mingw64*)
3955         target_os=mingw32
3956         LIBTARGET=i386
3957         if enabled x86_64; then
3958             LIBTARGET="i386:x86-64"
3959         elif enabled arm; then
3960             LIBTARGET="arm"
3961         elif enabled aarch64; then
3962             LIBTARGET="arm64"
3963         fi
3964         if enabled shared; then
3965             # Cannot build both shared and static libs when using dllimport.
3966             disable static
3967         fi
3968         check_ldflags -Wl,--nxcompat
3969         check_ldflags -Wl,--dynamicbase
3970         shlibdir_default="$bindir_default"
3971         SLIBPREF=""
3972         SLIBSUF=".dll"
3973         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3974         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3975         SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3976         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3977         SLIB_INSTALL_LINKS=
3978         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3979         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3980         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3981         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-auto-image-base $$(@:$(SLIBSUF)=.def)'
3982         enabled x86_64 && objformat="win64" || objformat="win32"
3983         dlltool="${cross_prefix}dlltool"
3984         ranlib=:
3985         enable dos_paths
3986         ;;
3987     win32|win64)
3988         disable symver
3989         if enabled shared; then
3990             # Link to the import library instead of the normal static library
3991             # for shared libs.
3992             LD_LIB='%.lib'
3993             # Cannot build both shared and static libs with MSVC or icl.
3994             disable static
3995         fi
3996         shlibdir_default="$bindir_default"
3997         SLIBPREF=""
3998         SLIBSUF=".dll"
3999         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4000         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4001         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4002         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4003         SLIB_INSTALL_LINKS=
4004         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4005         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4006         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4007         enabled x86_64 && objformat="win64" || objformat="win32"
4008         ranlib=:
4009         enable dos_paths
4010         ;;
4011     cygwin*)
4012         target_os=cygwin
4013         shlibdir_default="$bindir_default"
4014         SLIBPREF="cyg"
4015         SLIBSUF=".dll"
4016         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4017         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4018         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4019         SLIB_INSTALL_LINKS=
4020         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
4021         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
4022         enabled x86_64 && objformat="win64" || objformat="win32"
4023         enable dos_paths
4024         ;;
4025     *-dos|freedos|opendos)
4026         network_extralibs="-lsocket"
4027         objformat="coff"
4028         enable dos_paths
4029         add_cppflags -U__STRICT_ANSI__
4030         ;;
4031     linux)
4032         enable section_data_rel_ro
4033         ;;
4034     irix*)
4035         target_os=irix
4036         ranlib="echo ignoring ranlib"
4037         ;;
4038     os/2*)
4039         ln_s="cp -f"
4040         objformat="aout"
4041         add_cppflags -D_GNU_SOURCE
4042         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4043         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4044         LIBSUF="_s.a"
4045         SLIBPREF=""
4046         SLIBSUF=".dll"
4047         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4048         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4049         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4050             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4051             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4052             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4053             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4054         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4055             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4056         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4057         enable dos_paths
4058         ;;
4059     gnu/kfreebsd)
4060         add_cppflags -D_BSD_SOURCE
4061         ;;
4062     gnu)
4063         ;;
4064     qnx)
4065         add_cppflags -D_QNX_SOURCE
4066         network_extralibs="-lsocket"
4067         ;;
4068     symbian)
4069         SLIBSUF=".dll"
4070         enable dos_paths
4071         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4072         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4073         add_ldflags -Wl,--target1-abs,--no-undefined \
4074                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4075                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4076         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4077                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4078                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4079         ;;
4080     minix)
4081         ;;
4082     none)
4083         ;;
4084     *)
4085         die "Unknown OS '$target_os'."
4086         ;;
4087 esac
4088
4089 # determine libc flavour
4090
4091 probe_libc(){
4092     pfx=$1
4093     pfx_no_=${pfx%_}
4094     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4095     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4096         eval ${pfx}libc_type=uclibc
4097         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4098     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4099         eval ${pfx}libc_type=glibc
4100         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4101     # MinGW headers can be installed on Cygwin, so check for newlib first.
4102     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4103         eval ${pfx}libc_type=newlib
4104         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4105         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
4106             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
4107     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4108     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4109         eval ${pfx}libc_type=mingw64
4110         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4111         eval test \$${pfx_no_}cc_type = "gcc" &&
4112             add_${pfx}cppflags -D__printf__=__gnu_printf__
4113         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
4114             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
4115     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4116          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4117         eval ${pfx}libc_type=mingw32
4118         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4119             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4120             die "ERROR: MinGW32 runtime version must be >= 3.15."
4121         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4122         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
4123             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4124         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&