Add Haivision SRT protocol
[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     CONDITION_VARIABLE_Ptr
1736     CUVIDDECODECREATEINFO_bitDepthMinus8
1737     socklen_t
1738     struct_addrinfo
1739     struct_group_source_req
1740     struct_ip_mreq_source
1741     struct_ipv6_mreq
1742     struct_pollfd
1743     struct_rusage_ru_maxrss
1744     struct_sockaddr_in6
1745     struct_sockaddr_sa_len
1746     struct_sockaddr_storage
1747     struct_v4l2_frmivalenum_discrete
1748 "
1749
1750 HAVE_LIST="
1751     $ARCH_EXT_LIST
1752     $(add_suffix _external $ARCH_EXT_LIST)
1753     $(add_suffix _inline   $ARCH_EXT_LIST)
1754     $ARCH_FEATURES
1755     $BUILTIN_LIST
1756     $HAVE_LIST_CMDLINE
1757     $HAVE_LIST_PUB
1758     $HEADERS_LIST
1759     $INTRINSICS_LIST
1760     $MATH_FUNCS
1761     $SYSTEM_FEATURES
1762     $SYSTEM_FUNCS
1763     $SYSTEM_LIBRARIES
1764     $THREADS_LIST
1765     $TOOLCHAIN_FEATURES
1766     $TYPES_LIST
1767 "
1768
1769 # options emitted with CONFIG_ prefix but not available on the command line
1770 CONFIG_EXTRA="
1771     aandcttables
1772     ac3dsp
1773     adts_header
1774     audio_frame_queue
1775     audiodsp
1776     blockdsp
1777     bswapdsp
1778     cabac
1779     cbs
1780     cbs_h264
1781     cbs_h265
1782     cbs_mpeg2
1783     dirac_parse
1784     dvprofile
1785     faandct
1786     faanidct
1787     fdctdsp
1788     flacdsp
1789     fmtconvert
1790     g722dsp
1791     gmp
1792     golomb
1793     gplv3
1794     h263dsp
1795     h264chroma
1796     h264dsp
1797     h264parse
1798     h264pred
1799     h264qpel
1800     hevcparse
1801     hpeldsp
1802     huffman
1803     huffyuvdsp
1804     huffyuvencdsp
1805     idctdsp
1806     iirfilter
1807     imdct15
1808     intrax8
1809     iso_media
1810     ividsp
1811     jpegtables
1812     lgplv3
1813     libx262
1814     libxcb_shape
1815     lpc
1816     lzf
1817     me_cmp
1818     mpeg_er
1819     mpegaudio
1820     mpegaudiodsp
1821     mpegaudioheader
1822     mpegvideo
1823     mpegvideoenc
1824     mss34dsp
1825     pixblockdsp
1826     qpeldsp
1827     qsv
1828     qsvdec
1829     qsvenc
1830     qsvvpp
1831     rangecoder
1832     riffdec
1833     riffenc
1834     rtpdec
1835     rtpenc_chain
1836     rv34dsp
1837     sinewin
1838     snappy
1839     srtp
1840     startcode
1841     texturedsp
1842     texturedspenc
1843     tpeldsp
1844     vaapi_encode
1845     vc1dsp
1846     videodsp
1847     vp3dsp
1848     vp56dsp
1849     vp8dsp
1850     wma_freqs
1851     wmv2dsp
1852 "
1853
1854 CMDLINE_SELECT="
1855     $ARCH_EXT_LIST
1856     $CONFIG_LIST
1857     $HAVE_LIST_CMDLINE
1858     $THREADS_LIST
1859     asm
1860     cross_compile
1861     debug
1862     extra_warnings
1863     logging
1864     lto
1865     optimizations
1866     rpath
1867 "
1868
1869 PATHS_LIST="
1870     bindir
1871     datadir
1872     docdir
1873     incdir
1874     libdir
1875     mandir
1876     prefix
1877     shlibdir
1878 "
1879
1880 CMDLINE_SET="
1881     $PATHS_LIST
1882     ar
1883     arch
1884     as
1885     cc
1886     objcc
1887     cpu
1888     cross_prefix
1889     custom_allocator
1890     dep_cc
1891     env
1892     extra_version
1893     host_cc
1894     host_cflags
1895     host_extralibs
1896     host_ld
1897     host_ldflags
1898     host_os
1899     ignore_tests
1900     ld
1901     logfile
1902     malloc_prefix
1903     nm
1904     optflags
1905     pkg_config
1906     pkg_config_flags
1907     samples
1908     sysinclude
1909     sysroot
1910     target_exec
1911     target_os
1912     target_path
1913     target_samples
1914     toolchain
1915     x86asmexe
1916 "
1917
1918 CMDLINE_APPEND="
1919     extra_cflags
1920     extra_objcflags
1921     host_cppflags
1922 "
1923
1924 # code dependency declarations
1925
1926 # architecture extensions
1927
1928 armv5te_deps="arm"
1929 armv6_deps="arm"
1930 armv6t2_deps="arm"
1931 armv8_deps="aarch64"
1932 neon_deps_any="aarch64 arm"
1933 intrinsics_neon_deps="neon"
1934 vfp_deps_any="aarch64 arm"
1935 vfpv3_deps="vfp"
1936
1937 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1938
1939 altivec_deps="ppc"
1940 dcbzl_deps="ppc"
1941 ldbrx_deps="ppc"
1942 ppc4xx_deps="ppc"
1943 vsx_deps="altivec"
1944 power8_deps="vsx"
1945
1946 loongson_deps="mips"
1947 mips32r1_deps="mips32"
1948 mips32r2_deps="mips32"
1949 mips32r6_deps="mips32"
1950 mips64r1_deps="mips64"
1951 mips64r2_deps="mips64"
1952 mips64r6_deps="mips64"
1953
1954 vis_deps="sparc"
1955
1956 cpunop_deps="i686"
1957 x86_64_select="i686"
1958 x86_64_suggest="fast_cmov"
1959
1960 amd3dnow_deps="mmx"
1961 amd3dnowext_deps="amd3dnow"
1962 i686_deps="x86"
1963 mmx_deps="x86"
1964 mmxext_deps="mmx"
1965 sse_deps="mmxext"
1966 sse2_deps="sse"
1967 sse3_deps="sse2"
1968 ssse3_deps="sse3"
1969 sse4_deps="ssse3"
1970 sse42_deps="sse4"
1971 avx_deps="sse42"
1972 xop_deps="avx"
1973 fma3_deps="avx"
1974 fma4_deps="avx"
1975 avx2_deps="avx"
1976
1977 mmx_external_deps="x86asm"
1978 mmx_inline_deps="inline_asm x86"
1979 mmx_suggest="mmx_external mmx_inline"
1980
1981 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1982     eval dep=\$${ext}_deps
1983     eval ${ext}_external_deps='"${dep}_external"'
1984     eval ${ext}_inline_deps='"${dep}_inline"'
1985     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1986 done
1987
1988 aligned_stack_if_any="aarch64 ppc x86"
1989 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1990 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1991 fast_unaligned_if_any="aarch64 ppc x86"
1992 simd_align_16_if_any="altivec neon sse"
1993 simd_align_32_if_any="avx"
1994
1995 # system capabilities
1996 symver_if_any="symver_asm_label symver_gnu_asm"
1997 valgrind_backtrace_conflict="optimizations"
1998 valgrind_backtrace_deps="valgrind_valgrind_h"
1999
2000 # threading support
2001 atomics_gcc_if="sync_val_compare_and_swap"
2002 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2003 atomics_win32_if="MemoryBarrier"
2004 atomics_native_if_any="$ATOMICS_LIST"
2005 w32threads_deps="atomics_native"
2006 threads_if_any="$THREADS_LIST"
2007
2008 # subsystems
2009 cbs_h264_select="cbs golomb"
2010 cbs_h265_select="cbs golomb"
2011 cbs_mpeg2_select="cbs"
2012 dct_select="rdft"
2013 dirac_parse_select="golomb"
2014 error_resilience_select="me_cmp"
2015 faandct_deps="faan"
2016 faandct_select="fdctdsp"
2017 faanidct_deps="faan"
2018 faanidct_select="idctdsp"
2019 h264dsp_select="startcode"
2020 hevcparse_select="golomb"
2021 intrax8_select="blockdsp idctdsp"
2022 mdct_select="fft"
2023 rdft_select="fft"
2024 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2025 mpeg_er_select="error_resilience"
2026 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2027 mpegaudiodsp_select="dct"
2028 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
2029 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2030 vc1dsp_select="h264chroma qpeldsp startcode"
2031
2032 # decoders / encoders
2033 aac_decoder_select="adts_header imdct15 mdct sinewin"
2034 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2035 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2036 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2037 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2038 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2039 adpcm_g722_decoder_select="g722dsp"
2040 adpcm_g722_encoder_select="g722dsp"
2041 aic_decoder_select="golomb idctdsp"
2042 alac_encoder_select="lpc"
2043 als_decoder_select="bswapdsp"
2044 amrnb_decoder_select="lsp"
2045 amrwb_decoder_select="lsp"
2046 amv_decoder_select="sp5x_decoder"
2047 ape_decoder_select="bswapdsp"
2048 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2049 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2050 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2051 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2052 atrac1_decoder_select="mdct sinewin"
2053 atrac3_decoder_select="mdct"
2054 atrac3p_decoder_select="mdct sinewin"
2055 bink_decoder_select="blockdsp hpeldsp"
2056 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2057 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2058 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2059 clearvideo_decoder_select="idctdsp"
2060 cllc_decoder_select="bswapdsp"
2061 comfortnoise_encoder_select="lpc"
2062 cook_decoder_select="audiodsp mdct sinewin"
2063 cscd_decoder_select="lzo"
2064 cscd_decoder_suggest="zlib"
2065 dca_decoder_select="fmtconvert mdct"
2066 dds_decoder_select="texturedsp"
2067 dnxhd_decoder_select="blockdsp idctdsp"
2068 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2069 dvvideo_decoder_select="dvprofile idctdsp"
2070 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2071 dxa_decoder_deps="zlib"
2072 dxv_decoder_select="lzf texturedsp"
2073 eac3_decoder_select="ac3_decoder"
2074 eac3_encoder_select="ac3_encoder"
2075 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2076 eatgq_decoder_select="aandcttables idctdsp"
2077 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2078 exr_decoder_deps="zlib"
2079 ffv1_decoder_select="rangecoder"
2080 ffv1_encoder_select="rangecoder"
2081 ffvhuff_decoder_select="huffyuv_decoder"
2082 ffvhuff_encoder_select="huffyuv_encoder"
2083 fic_decoder_select="golomb"
2084 flac_decoder_select="flacdsp"
2085 flac_encoder_select="bswapdsp flacdsp lpc"
2086 flashsv_decoder_deps="zlib"
2087 flashsv_encoder_deps="zlib"
2088 flashsv2_decoder_deps="zlib"
2089 flv_decoder_select="h263_decoder"
2090 flv_encoder_select="h263_encoder"
2091 fourxm_decoder_select="blockdsp bswapdsp"
2092 fraps_decoder_select="bswapdsp huffman"
2093 g2m_decoder_deps="zlib"
2094 g2m_decoder_select="blockdsp idctdsp jpegtables"
2095 h261_decoder_select="mpeg_er mpegvideo"
2096 h261_encoder_select="aandcttables mpegvideoenc"
2097 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2098 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2099 h263i_decoder_select="h263_decoder"
2100 h263p_encoder_select="h263_encoder"
2101 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2102 h264_decoder_suggest="error_resilience"
2103 hap_decoder_select="snappy texturedsp"
2104 hap_encoder_deps="libsnappy"
2105 hap_encoder_select="texturedspenc"
2106 hevc_decoder_select="bswapdsp cabac hevcparse videodsp"
2107 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2108 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2109 iac_decoder_select="imc_decoder"
2110 imc_decoder_select="bswapdsp fft mdct sinewin"
2111 indeo3_decoder_select="hpeldsp"
2112 indeo4_decoder_select="ividsp"
2113 indeo5_decoder_select="ividsp"
2114 interplay_video_decoder_select="hpeldsp"
2115 jpegls_decoder_select="mjpeg_decoder"
2116 jv_decoder_select="blockdsp"
2117 lagarith_decoder_select="huffyuvdsp"
2118 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2119 magicyuv_decoder_select="huffyuvdsp"
2120 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2121 metasound_decoder_select="lsp mdct sinewin"
2122 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2123 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2124 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2125 mjpegb_decoder_select="mjpeg_decoder"
2126 mlp_decoder_select="mlp_parser"
2127 motionpixels_decoder_select="bswapdsp"
2128 mp1_decoder_select="mpegaudio"
2129 mp1float_decoder_select="mpegaudio"
2130 mp2_decoder_select="mpegaudio"
2131 mp2float_decoder_select="mpegaudio"
2132 mp3_decoder_select="mpegaudio"
2133 mp3adu_decoder_select="mpegaudio"
2134 mp3adufloat_decoder_select="mpegaudio"
2135 mp3float_decoder_select="mpegaudio"
2136 mp3on4_decoder_select="mpegaudio"
2137 mp3on4float_decoder_select="mpegaudio"
2138 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2139 mpc8_decoder_select="mpegaudiodsp"
2140 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2141 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2142 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2143 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2144 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2145 mpeg4_encoder_select="h263_encoder"
2146 msa1_decoder_select="mss34dsp"
2147 msmpeg4v1_decoder_select="h263_decoder"
2148 msmpeg4v2_decoder_select="h263_decoder"
2149 msmpeg4v2_encoder_select="h263_encoder"
2150 msmpeg4v3_decoder_select="h263_decoder"
2151 msmpeg4v3_encoder_select="h263_encoder"
2152 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2153 mts2_decoder_select="mss34dsp"
2154 mxpeg_decoder_select="mjpeg_decoder"
2155 nellymoser_decoder_select="mdct sinewin"
2156 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2157 nuv_decoder_select="idctdsp lzo"
2158 on2avc_decoder_select="mdct"
2159 opus_decoder_deps="avresample"
2160 opus_decoder_select="imdct15"
2161 png_decoder_deps="zlib"
2162 png_encoder_deps="zlib"
2163 png_encoder_select="huffyuvencdsp"
2164 prores_decoder_select="idctdsp"
2165 prores_encoder_select="fdctdsp"
2166 qcelp_decoder_select="lsp"
2167 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2168 ra_144_encoder_select="audio_frame_queue lpc"
2169 ralf_decoder_select="golomb"
2170 rscc_decoder_deps="zlib"
2171 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2172 rv10_encoder_select="h263_encoder"
2173 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2174 rv20_encoder_select="h263_encoder"
2175 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2176 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2177 screenpresso_decoder_deps="zlib"
2178 sipr_decoder_select="lsp"
2179 sp5x_decoder_select="mjpeg_decoder"
2180 svq1_decoder_select="hpeldsp"
2181 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2182 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2183 svq3_decoder_suggest="zlib"
2184 tak_decoder_select="audiodsp"
2185 tdsc_decoder_deps="zlib"
2186 tdsc_decoder_select="mjpeg_decoder"
2187 theora_decoder_select="vp3_decoder"
2188 thp_decoder_select="mjpeg_decoder"
2189 tiff_decoder_suggest="zlib"
2190 tiff_encoder_suggest="zlib"
2191 truehd_decoder_select="mlp_decoder"
2192 truemotion2_decoder_select="bswapdsp"
2193 truespeech_decoder_select="bswapdsp"
2194 tscc_decoder_deps="zlib"
2195 txd_decoder_select="texturedsp"
2196 twinvq_decoder_select="mdct lsp sinewin"
2197 utvideo_decoder_select="bswapdsp huffyuvdsp"
2198 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2199 vble_decoder_select="huffyuvdsp"
2200 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2201 vc1image_decoder_select="vc1_decoder"
2202 vorbis_decoder_select="mdct"
2203 vorbis_encoder_select="mdct"
2204 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2205 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2206 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2207 vp6a_decoder_select="vp6_decoder"
2208 vp6f_decoder_select="vp6_decoder"
2209 vp7_decoder_select="h264pred videodsp vp8dsp"
2210 vp8_decoder_select="h264pred videodsp vp8dsp"
2211 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2212 webp_decoder_select="vp8_decoder"
2213 wmapro_decoder_select="mdct sinewin wma_freqs"
2214 wmav1_decoder_select="mdct sinewin wma_freqs"
2215 wmav1_encoder_select="mdct sinewin wma_freqs"
2216 wmav2_decoder_select="mdct sinewin wma_freqs"
2217 wmav2_encoder_select="mdct sinewin wma_freqs"
2218 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2219 wmv1_decoder_select="h263_decoder"
2220 wmv1_encoder_select="h263_encoder"
2221 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2222 wmv2_encoder_select="h263_encoder wmv2dsp"
2223 wmv3_decoder_select="vc1_decoder"
2224 wmv3image_decoder_select="wmv3_decoder"
2225 zerocodec_decoder_deps="zlib"
2226 zlib_decoder_deps="zlib"
2227 zlib_encoder_deps="zlib"
2228 zmbv_decoder_deps="zlib"
2229 zmbv_encoder_deps="zlib"
2230
2231 # hardware accelerators
2232 d3d11va_deps="dxva_h ID3D11VideoDecoder"
2233 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2234 vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
2235 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2236
2237 h263_vaapi_hwaccel_deps="vaapi"
2238 h263_vaapi_hwaccel_select="h263_decoder"
2239 h264_cuvid_hwaccel_deps="cuvid CUVIDH264PICPARAMS"
2240 h264_cuvid_hwaccel_select="h264_decoder"
2241 h264_d3d11va_hwaccel_deps="d3d11va"
2242 h264_d3d11va_hwaccel_select="h264_decoder"
2243 h264_d3d11va2_hwaccel_deps="d3d11va"
2244 h264_d3d11va2_hwaccel_select="h264_decoder"
2245 h264_dxva2_hwaccel_deps="dxva2"
2246 h264_dxva2_hwaccel_select="h264_decoder"
2247 h264_vaapi_hwaccel_deps="vaapi"
2248 h264_vaapi_hwaccel_select="h264_decoder"
2249 h264_vda_hwaccel_deps="vda"
2250 h264_vda_hwaccel_select="h264_decoder"
2251 h264_vda_old_hwaccel_deps="vda"
2252 h264_vda_old_hwaccel_select="h264_decoder"
2253 h264_vdpau_hwaccel_deps="vdpau"
2254 h264_vdpau_hwaccel_select="h264_decoder"
2255 hevc_cuvid_hwaccel_deps="cuvid CUVIDHEVCPICPARAMS"
2256 hevc_cuvid_hwaccel_select="hevc_decoder"
2257 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2258 hevc_d3d11va_hwaccel_select="hevc_decoder"
2259 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2260 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2261 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2262 hevc_dxva2_hwaccel_select="hevc_decoder"
2263 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2264 hevc_vaapi_hwaccel_select="hevc_decoder"
2265 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2266 hevc_vdpau_hwaccel_select="hevc_decoder"
2267 mpeg1_vdpau_hwaccel_deps="vdpau"
2268 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2269 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2270 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2271 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2272 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2273 mpeg2_dxva2_hwaccel_deps="dxva2"
2274 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2275 mpeg2_vaapi_hwaccel_deps="vaapi"
2276 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2277 mpeg2_vdpau_hwaccel_deps="vdpau"
2278 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2279 mpeg4_vaapi_hwaccel_deps="vaapi"
2280 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2281 mpeg4_vdpau_hwaccel_deps="vdpau"
2282 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2283 vc1_d3d11va_hwaccel_deps="d3d11va"
2284 vc1_d3d11va_hwaccel_select="vc1_decoder"
2285 vc1_d3d11va2_hwaccel_deps="d3d11va"
2286 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2287 vc1_dxva2_hwaccel_deps="dxva2"
2288 vc1_dxva2_hwaccel_select="vc1_decoder"
2289 vc1_vaapi_hwaccel_deps="vaapi"
2290 vc1_vaapi_hwaccel_select="vc1_decoder"
2291 vc1_vdpau_hwaccel_deps="vdpau"
2292 vc1_vdpau_hwaccel_select="vc1_decoder"
2293 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2294 vp8_vaapi_hwaccel_select="vp8_decoder"
2295 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2296 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2297 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2298 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2299 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2300
2301 # hardware-accelerated codecs
2302 amf_deps_any="libdl LoadLibrary"
2303 nvenc_deps_any="libdl LoadLibrary"
2304 omx_deps="libdl pthreads"
2305 omx_rpi_select="omx"
2306 qsv_deps="libmfx"
2307 qsvdec_select="qsv"
2308 qsvenc_select="qsv"
2309 qsvvpp_select="qsv"
2310 vaapi_encode_deps="vaapi"
2311
2312 hwupload_cuda_filter_deps="cuda"
2313 scale_npp_filter_deps="cuda libnpp"
2314
2315 h264_amf_encoder_deps="amf"
2316 h264_mmal_decoder_deps="mmal"
2317 h264_nvenc_encoder_deps="nvenc"
2318 h264_omx_encoder_deps="omx"
2319 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2320 h264_qsv_encoder_select="qsvenc"
2321 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2322 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2323 hevc_amf_encoder_deps="amf"
2324 hevc_nvenc_encoder_deps="nvenc"
2325 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2326 hevc_qsv_encoder_select="hevcparse qsvenc"
2327 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2328 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2329 mjpeg_qsv_encoder_deps="libmfx"
2330 mjpeg_qsv_encoder_select="qsvenc"
2331 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2332 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2333 mpeg2_mmal_decoder_deps="mmal"
2334 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2335 mpeg2_qsv_encoder_select="qsvenc"
2336 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2337 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2338 mpeg4_omx_encoder_deps="omx"
2339 vc1_mmal_decoder_deps="mmal"
2340 vc1_qsv_decoder_select="qsvdec vc1_parser"
2341 vp8_qsv_decoder_select="qsvdec vp8_parser"
2342 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2343 vp8_vaapi_encoder_select="vaapi_encode"
2344 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2345 vp9_vaapi_encoder_select="vaapi_encode"
2346
2347 nvenc_h264_encoder_select="h264_nvenc_encoder"
2348 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2349
2350 # parsers
2351 aac_parser_select="adts_header"
2352 h264_parser_select="golomb h264dsp h264parse"
2353 hevc_parser_select="hevcparse"
2354 mpegaudio_parser_select="mpegaudioheader"
2355 mpegvideo_parser_select="mpegvideo"
2356 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2357 vc1_parser_select="vc1dsp"
2358
2359 # bitstream_filters
2360 aac_adtstoasc_bsf_select="adts_header"
2361 h264_metadata_bsf_select="cbs_h264"
2362 h264_redundant_pps_bsf_select="cbs_h264"
2363 hevc_metadata_bsf_select="cbs_h265"
2364 mjpeg2jpeg_bsf_select="jpegtables"
2365 mpeg2_metadata_bsf_select="cbs_mpeg2"
2366 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2367
2368 # external libraries
2369 avisynth_deps="LoadLibrary"
2370 avxsynth_deps="libdl"
2371 avisynth_demuxer_deps_any="avisynth avxsynth"
2372 avisynth_demuxer_select="riffdec"
2373 libaom_av1_decoder_deps="libaom"
2374 libaom_av1_encoder_deps="libaom"
2375 libdcadec_decoder_deps="libdcadec"
2376 libfaac_encoder_deps="libfaac"
2377 libfaac_encoder_select="audio_frame_queue"
2378 libfdk_aac_decoder_deps="libfdk_aac"
2379 libfdk_aac_encoder_deps="libfdk_aac"
2380 libfdk_aac_encoder_select="audio_frame_queue"
2381 libgsm_decoder_deps="libgsm"
2382 libgsm_encoder_deps="libgsm"
2383 libgsm_ms_decoder_deps="libgsm"
2384 libgsm_ms_encoder_deps="libgsm"
2385 libilbc_decoder_deps="libilbc"
2386 libilbc_encoder_deps="libilbc"
2387 libkvazaar_encoder_deps="libkvazaar"
2388 libmp3lame_encoder_deps="libmp3lame"
2389 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2390 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2391 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2392 libopencore_amrnb_encoder_select="audio_frame_queue"
2393 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2394 libopenh264_decoder_deps="libopenh264"
2395 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2396 libopenh264_encoder_deps="libopenh264"
2397 libopenjpeg_decoder_deps="libopenjpeg"
2398 libopenjpeg_encoder_deps="libopenjpeg"
2399 libopus_decoder_deps="libopus"
2400 libopus_encoder_deps="libopus"
2401 libopus_encoder_select="audio_frame_queue"
2402 libschroedinger_decoder_deps="libschroedinger"
2403 libschroedinger_encoder_deps="libschroedinger"
2404 libspeex_decoder_deps="libspeex"
2405 libspeex_encoder_deps="libspeex"
2406 libspeex_encoder_select="audio_frame_queue"
2407 libtheora_encoder_deps="libtheora"
2408 libtwolame_encoder_deps="libtwolame"
2409 libvo_aacenc_encoder_deps="libvo_aacenc"
2410 libvo_aacenc_encoder_select="audio_frame_queue"
2411 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2412 libvorbis_encoder_deps="libvorbis"
2413 libvorbis_encoder_select="audio_frame_queue"
2414 libvpx_vp8_decoder_deps="libvpx"
2415 libvpx_vp8_encoder_deps="libvpx"
2416 libvpx_vp9_decoder_deps="libvpx"
2417 libvpx_vp9_encoder_deps="libvpx"
2418 libwavpack_encoder_deps="libwavpack"
2419 libwavpack_encoder_select="audio_frame_queue"
2420 libwebp_encoder_deps="libwebp"
2421 libx262_encoder_deps="libx262"
2422 libx264_encoder_deps="libx264"
2423 libx265_encoder_deps="libx265"
2424 libxavs_encoder_deps="libxavs"
2425 libxvid_encoder_deps="libxvid mkstemp"
2426
2427 # demuxers / muxers
2428 ac3_demuxer_select="ac3_parser"
2429 asf_demuxer_select="riffdec"
2430 asf_muxer_select="riffenc"
2431 asf_stream_muxer_select="asf_muxer"
2432 avi_demuxer_select="iso_media riffdec"
2433 avi_muxer_select="riffenc"
2434 caf_demuxer_select="iso_media riffdec"
2435 dash_muxer_select="mp4_muxer"
2436 dirac_demuxer_select="dirac_parser"
2437 dv_demuxer_select="dvprofile"
2438 dv_muxer_select="dvprofile"
2439 dxa_demuxer_select="riffdec"
2440 eac3_demuxer_select="ac3_parser"
2441 f4v_muxer_select="mov_muxer"
2442 flac_demuxer_select="flac_parser"
2443 hds_muxer_select="flv_muxer"
2444 hls_muxer_select="mpegts_muxer"
2445 ipod_muxer_select="mov_muxer"
2446 ismv_muxer_select="mov_muxer"
2447 matroska_audio_muxer_select="matroska_muxer"
2448 matroska_demuxer_select="iso_media riffdec"
2449 matroska_demuxer_suggest="bzlib lzo zlib"
2450 matroska_muxer_select="iso_media riffenc"
2451 mmf_muxer_select="riffenc"
2452 mov_demuxer_select="iso_media riffdec"
2453 mov_demuxer_suggest="zlib"
2454 mov_muxer_select="iso_media riffenc rtpenc_chain"
2455 mp3_demuxer_select="mpegaudio_parser"
2456 mp3_muxer_select="mpegaudioheader"
2457 mp4_muxer_select="mov_muxer"
2458 mpegts_demuxer_select="iso_media"
2459 mpegts_muxer_select="adts_muxer latm_muxer"
2460 mpegtsraw_demuxer_select="mpegts_demuxer"
2461 mxf_d10_muxer_select="mxf_muxer"
2462 nut_muxer_select="riffenc"
2463 nuv_demuxer_select="riffdec"
2464 oga_muxer_select="ogg_muxer"
2465 ogg_demuxer_select="dirac_parse"
2466 opus_muxer_select="ogg_muxer"
2467 psp_muxer_select="mov_muxer"
2468 rtp_demuxer_select="sdp_demuxer"
2469 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2470 rtsp_demuxer_select="http_protocol rtpdec"
2471 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2472 sap_demuxer_select="sdp_demuxer"
2473 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2474 sdp_demuxer_select="rtpdec"
2475 smoothstreaming_muxer_select="ismv_muxer"
2476 spdif_demuxer_select="adts_header"
2477 spdif_muxer_select="adts_header"
2478 spx_muxer_select="ogg_muxer"
2479 swf_demuxer_suggest="zlib"
2480 tak_demuxer_select="tak_parser"
2481 tg2_muxer_select="mov_muxer"
2482 tgp_muxer_select="mov_muxer"
2483 w64_demuxer_select="wav_demuxer"
2484 wav_demuxer_select="riffdec"
2485 wav_muxer_select="riffenc"
2486 webm_muxer_select="iso_media riffenc"
2487 wtv_demuxer_select="mpegts_demuxer riffdec"
2488 xmv_demuxer_select="riffdec"
2489 xwma_demuxer_select="riffdec"
2490
2491 # indevs
2492 alsa_indev_deps="alsa"
2493 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2494 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2495 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2496 fbdev_indev_deps="linux_fb_h"
2497 jack_indev_deps="libjack"
2498 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2499 libcdio_indev_deps="libcdio"
2500 libdc1394_indev_deps="libdc1394"
2501 oss_indev_deps_any="sys_soundcard_h"
2502 pulse_indev_deps="libpulse"
2503 sndio_indev_deps="sndio"
2504 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2505 vfwcap_indev_deps="vfw32 vfwcap_defines"
2506 xcbgrab_indev_deps="libxcb libxcb_shape"
2507 xcbgrab_indev_suggest="libxcb_shm libxcb_xfixes"
2508
2509 # protocols
2510 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
2511 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2512 ffrtmpcrypt_protocol_select="tcp_protocol"
2513 ffrtmphttp_protocol_conflict="librtmp_protocol"
2514 ffrtmphttp_protocol_select="http_protocol"
2515 gopher_protocol_select="network"
2516 http_protocol_select="tcp_protocol"
2517 http_protocol_suggest="zlib"
2518 httpproxy_protocol_select="tcp_protocol"
2519 httpproxy_protocol_suggest="zlib"
2520 https_protocol_select="tls_protocol"
2521 https_protocol_suggest="zlib"
2522 icecast_protocol_select="http_protocol"
2523 librtmp_protocol_deps="librtmp"
2524 librtmpe_protocol_deps="librtmp"
2525 librtmps_protocol_deps="librtmp"
2526 librtmpt_protocol_deps="librtmp"
2527 librtmpte_protocol_deps="librtmp"
2528 mmsh_protocol_select="http_protocol"
2529 mmst_protocol_select="network"
2530 libsrt_protocol_deps="libsrt"
2531 libsrt_protocol_select="network"
2532 rtmp_protocol_conflict="librtmp_protocol"
2533 rtmp_protocol_select="tcp_protocol"
2534 rtmp_protocol_suggest="zlib"
2535 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2536 rtmpe_protocol_suggest="zlib"
2537 rtmps_protocol_conflict="librtmp_protocol"
2538 rtmps_protocol_select="tls_protocol"
2539 rtmps_protocol_suggest="zlib"
2540 rtmpt_protocol_select="ffrtmphttp_protocol"
2541 rtmpt_protocol_suggest="zlib"
2542 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2543 rtmpte_protocol_suggest="zlib"
2544 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2545 rtmpts_protocol_suggest="zlib"
2546 rtp_protocol_select="udp_protocol"
2547 sctp_protocol_deps="struct_sctp_event_subscribe"
2548 sctp_protocol_select="network"
2549 srtp_protocol_select="rtp_protocol srtp"
2550 tcp_protocol_select="network"
2551 tls_protocol_deps_any="gnutls openssl"
2552 tls_protocol_select="tcp_protocol"
2553 udp_protocol_select="network"
2554 unix_protocol_deps="sys_un_h"
2555 unix_protocol_select="network"
2556
2557 # filters
2558 asyncts_filter_deps="avresample"
2559 blackframe_filter_deps="gpl"
2560 boxblur_filter_deps="gpl"
2561 bs2b_filter_deps="libbs2b"
2562 cropdetect_filter_deps="gpl"
2563 deinterlace_qsv_filter_deps="libmfx"
2564 deinterlace_vaapi_filter_deps="vaapi"
2565 delogo_filter_deps="gpl"
2566 drawtext_filter_deps="libfreetype"
2567 drawtext_filter_suggest="libfontconfig"
2568 frei0r_filter_deps="frei0r libdl"
2569 frei0r_src_filter_deps="frei0r libdl"
2570 hdcd_filter_deps="libhdcd"
2571 hqdn3d_filter_deps="gpl"
2572 interlace_filter_deps="gpl"
2573 movie_filter_deps="avcodec avformat"
2574 ocv_filter_deps="libopencv"
2575 overlay_qsv_filter_deps="libmfx"
2576 overlay_qsv_filter_select="qsvvpp"
2577 resample_filter_deps="avresample"
2578 scale_filter_deps="swscale"
2579 scale_qsv_filter_deps="libmfx"
2580 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2581 vpp_qsv_filter_deps="libmfx"
2582 vpp_qsv_filter_select="qsvvpp"
2583
2584 # examples
2585 decode_audio_example_deps="avcodec avutil"
2586 decode_video_example_deps="avcodec avutil"
2587 encode_audio_example_deps="avcodec avutil"
2588 encode_video_example_deps="avcodec avutil"
2589 filter_audio_example_deps="avfilter avutil"
2590 metadata_example_deps="avformat avutil"
2591 output_example_deps="avcodec avformat avresample avutil swscale"
2592 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2593 transcode_aac_example_deps="avcodec avformat avresample"
2594
2595 # EXTRALIBS_LIST
2596 cpu_init_extralibs="pthreads_extralibs"
2597 cws2fws_extralibs="zlib_extralibs"
2598
2599 # libraries, in linking order
2600 avcodec_deps="avutil"
2601 avcodec_select="null_bsf"
2602 avdevice_deps="avformat avcodec avutil"
2603 avfilter_deps="avutil"
2604 avformat_deps="avcodec avutil"
2605 avformat_suggest="network"
2606 avresample_deps="avutil"
2607 swscale_deps="avutil"
2608
2609 avcodec_extralibs="pthreads_extralibs libm_extralibs"
2610 avdevice_extralibs="libm_extralibs"
2611 avformat_extralibs="libm_extralibs"
2612 avfilter_extralibs="pthreads_extralibs libm_extralibs"
2613 avresample_extralibs="libm_extralibs"
2614 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"
2615 swscale_extralibs="libm_extralibs"
2616
2617 # programs
2618 avconv_deps="avcodec avfilter avformat avresample swscale"
2619 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2620                fps_filter null_filter resample_filter scale_filter
2621                trim_filter"
2622 avconv_suggest="psapi shell32"
2623 avplay_deps="avcodec avfilter avformat avresample sdl"
2624 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2625 avplay_suggest="shell32"
2626 avprobe_deps="avcodec avformat"
2627 avprobe_suggest="shell32"
2628
2629 # documentation
2630 pod2man_deps="doc"
2631 texi2html_deps="doc"
2632
2633 # default parameters
2634
2635 logfile="avbuild/config.log"
2636
2637 # installation paths
2638 prefix_default="/usr/local"
2639 bindir_default='${prefix}/bin'
2640 datadir_default='${prefix}/share/avconv'
2641 docdir_default='${prefix}/share/doc/libav'
2642 incdir_default='${prefix}/include'
2643 libdir_default='${prefix}/lib'
2644 mandir_default='${prefix}/share/man'
2645 shlibdir_default="$libdir_default"
2646
2647 # toolchain
2648 ar_default="ar"
2649 cc_default="gcc"
2650 host_cc_default="gcc"
2651 x86asmexe_default="nasm"
2652 ln_s="ln -s -f"
2653 nm_default="nm -g"
2654 pkg_config_default=pkg-config
2655 ranlib="ranlib"
2656 strip="strip"
2657 version_script='--version-script'
2658 objformat="elf32"
2659
2660 # machine
2661 arch_default=$(uname -m)
2662 cpu="generic"
2663 intrinsics="none"
2664
2665 # OS
2666 target_os_default=$(tolower $(uname -s))
2667 host_os=$target_os_default
2668
2669 # configurable options
2670 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2671
2672 enable asm
2673 enable debug
2674 enable doc
2675 enable faan faandct faanidct
2676 enable optimizations
2677 enable safe_bitstream_reader
2678 enable static
2679 enable swscale_alpha
2680 enable valgrind_backtrace
2681
2682 # By default, enable only those hwaccels that have no external dependencies.
2683 enable d3d11va dxva2 vda vdpau
2684
2685 # internal components are enabled by default
2686 enable $EXTRALIBS_LIST
2687
2688 # Avoid external, non-system, libraries getting enabled by dependency resolution
2689 disable $EXTERNAL_LIBRARY_LIST
2690
2691 # build settings
2692 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2693 LIBPREF="lib"
2694 LIBSUF=".a"
2695 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2696 SLIBPREF="lib"
2697 SLIBSUF=".so"
2698 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2699 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2700 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2701 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2702 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2703 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2704 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2705
2706 asflags_filter=echo
2707 cflags_filter=echo
2708 ldflags_filter=echo
2709
2710 AS_C='-c'
2711 AS_O='-o $@'
2712 CC_C='-c'
2713 CC_E='-E -o $@'
2714 CC_O='-o $@'
2715 OBJCC_C='-c'
2716 OBJCC_E='-E -o $@'
2717 OBJCC_O='-o $@'
2718 X86ASM_O='-o $@'
2719 LD_O='-o $@'
2720 LD_LIB='-l%'
2721 LD_PATH='-L'
2722 HOSTCC_C='-c'
2723 HOSTCC_E='-E -o $@'
2724 HOSTCC_O='-o $@'
2725 HOSTLD_O='-o $@'
2726
2727 host_extralibs='-lm'
2728 host_cflags_filter=echo
2729 host_ldflags_filter=echo
2730
2731 target_path='$(CURDIR)'
2732
2733 # since the object filename is not given with the -MM flag, the compiler
2734 # is only able to print the basename, and we must add the path ourselves
2735 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2736 DEPFLAGS='-MM'
2737
2738 mkdir -p avbuild
2739
2740 # find source path
2741 if test -f configure; then
2742     source_path=.
2743 else
2744     source_path=$(cd $(dirname "$0"); pwd)
2745     echo "$source_path" | grep -q '[[:blank:]]' &&
2746         die "Out of tree builds are impossible with whitespace in source path."
2747     test -e "$source_path/config.h" &&
2748         die "Out of tree builds are impossible with config.h in source dir."
2749 fi
2750
2751 for v in "$@"; do
2752     r=${v#*=}
2753     l=${v%"$r"}
2754     r=$(sh_quote "$r")
2755     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2756 done
2757
2758 find_things(){
2759     thing=$1
2760     pattern=$2
2761     file=$source_path/$3
2762     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2763 }
2764
2765 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2766 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2767 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2768 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2769 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2770 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2771 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2772
2773 find_things_extern(){
2774     thing=$1
2775     pattern=$2
2776     file=$source_path/$3
2777     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2778 }
2779
2780 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2781 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
2782 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2783
2784 AVCODEC_COMPONENTS_LIST="
2785     $BSF_LIST
2786     $DECODER_LIST
2787     $ENCODER_LIST
2788     $HWACCEL_LIST
2789     $PARSER_LIST
2790 "
2791
2792 AVDEVICE_COMPONENTS_LIST="
2793     $INDEV_LIST
2794 "
2795
2796 AVFILTER_COMPONENTS_LIST="
2797     $FILTER_LIST
2798 "
2799
2800 AVFORMAT_COMPONENTS_LIST="
2801     $DEMUXER_LIST
2802     $MUXER_LIST
2803     $PROTOCOL_LIST
2804 "
2805
2806 ALL_COMPONENTS="
2807     $AVCODEC_COMPONENTS_LIST
2808     $AVDEVICE_COMPONENTS_LIST
2809     $AVFILTER_COMPONENTS_LIST
2810     $AVFORMAT_COMPONENTS_LIST
2811 "
2812
2813 for n in $COMPONENT_LIST; do
2814     v=$(toupper ${n%s})_LIST
2815     eval enable \$$v
2816     eval ${n}_if_any="\$$v"
2817 done
2818
2819 enable $ARCH_EXT_LIST
2820
2821 die_unknown(){
2822     echo "Unknown option \"$1\"."
2823     echo "See $0 --help for available options."
2824     exit 1
2825 }
2826
2827 print_3_columns() {
2828     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2829 }
2830
2831 show_list() {
2832     suffix=_$1
2833     shift
2834     echo $* | sed s/$suffix//g | print_3_columns
2835     exit 0
2836 }
2837
2838 for opt do
2839     optval="${opt#*=}"
2840     case "$opt" in
2841         --extra-ldflags=*)
2842             add_ldflags $optval
2843         ;;
2844         --extra-ldexeflags=*)
2845             add_ldexeflags $optval
2846         ;;
2847         --extra-ldsoflags=*)
2848             add_ldsoflags $optval
2849         ;;
2850         --extra-libs=*)
2851             add_extralibs $optval
2852         ;;
2853         --disable-devices)
2854             disable $INDEV_LIST
2855         ;;
2856         --enable-debug=*)
2857             debuglevel="$optval"
2858         ;;
2859         --disable-programs)
2860             disable $PROGRAM_LIST
2861         ;;
2862         --disable-everything)
2863             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2864         ;;
2865         --disable-all)
2866             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2867             disable $LIBRARY_LIST $PROGRAM_LIST doc
2868         ;;
2869         --enable-*=*|--disable-*=*)
2870             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2871             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2872             eval list=\$$(toupper $thing)_LIST
2873             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2874             $action $(filter "$name" $list)
2875         ;;
2876         --enable-yasm|--disable-yasm)
2877             warn "The ${opt} option is only provided for compatibility and will be\n"\
2878                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
2879             test $opt = --enable-yasm && x86asm=yes || x86asm=no
2880         ;;
2881         --enable-?*|--disable-?*)
2882             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2883             if is_in $option $COMPONENT_LIST; then
2884                 test $action = disable && action=unset
2885                 eval $action \$$(toupper ${option%s})_LIST
2886             elif is_in $option $CMDLINE_SELECT; then
2887                 $action $option
2888             else
2889                 die_unknown $opt
2890             fi
2891         ;;
2892         --list-*)
2893             NAME="${opt#--list-}"
2894             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2895             NAME=${NAME%s}
2896             eval show_list $NAME \$$(toupper $NAME)_LIST
2897         ;;
2898         --help|-h) show_help
2899         ;;
2900         --quiet|-q) quiet=yes
2901         ;;
2902         *)
2903             optname="${opt%%=*}"
2904             optname="${optname#--}"
2905             optname=$(echo "$optname" | sed 's/-/_/g')
2906             if is_in $optname $CMDLINE_SET; then
2907                 eval $optname='$optval'
2908             elif is_in $optname $CMDLINE_APPEND; then
2909                 append $optname "$optval"
2910             else
2911                 die_unknown $opt
2912             fi
2913         ;;
2914     esac
2915 done
2916
2917 for e in $env; do
2918     eval "export $e"
2919 done
2920
2921 disabled logging && logfile=/dev/null
2922
2923 # command line configuration sanity checks
2924
2925 # we need to build at least one lib type
2926 if ! enabled_any static shared; then
2927     cat <<EOF
2928 At least one library type must be built.
2929 Specify --enable-static to build the static libraries or --enable-shared to
2930 build the shared libraries as well. To only build the shared libraries specify
2931 --disable-static in addition to --enable-shared.
2932 EOF
2933     exit 1
2934 fi
2935
2936 # Die early if licensing-related configure options are incompatible.
2937 die_license_disabled() {
2938     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2939 }
2940
2941 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2942 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2943 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2944
2945 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2946
2947 if enabled nonfree; then
2948     license="nonfree and unredistributable"
2949 elif enabled gplv3; then
2950     license="GPL version 3 or later"
2951 elif enabled lgplv3; then
2952     license="LGPL version 3 or later"
2953 elif enabled gpl; then
2954     license="GPL version 2 or later"
2955 else
2956     license="LGPL version 2.1 or later"
2957 fi
2958
2959 enabled_all gnutls openssl &&
2960     die "GnuTLS and OpenSSL must not be enabled at the same time."
2961
2962 # Disable all the library-specific components if the library itself
2963 # is disabled, see AVCODEC_LIST and following _LIST variables.
2964
2965 disable_components(){
2966     disabled ${1} && disable $(
2967         eval components="\$$(toupper ${1})_COMPONENTS"
2968         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2969     )
2970 }
2971
2972 map 'disable_components $v' $LIBRARY_LIST
2973
2974 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2975 set >> $logfile
2976
2977 case "$toolchain" in
2978     *-asan)
2979         cc_default="${toolchain%-asan}"
2980         add_cflags  -fsanitize=address
2981         add_ldflags -fsanitize=address
2982     ;;
2983     *-msan)
2984         cc_default="${toolchain%-msan}"
2985         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2986         add_ldflags -fsanitize=memory
2987     ;;
2988     *-tsan)
2989         cc_default="${toolchain%-tsan}"
2990         add_cflags  -fsanitize=thread -fPIE
2991         add_ldflags -fsanitize=thread -pie
2992         case "$toolchain" in
2993             gcc-tsan)
2994                 add_cflags  -fPIC
2995                 add_ldflags -fPIC
2996                 ;;
2997         esac
2998     ;;
2999     *-usan)
3000         cc_default="${toolchain%-usan}"
3001         add_cflags  -fsanitize=undefined
3002         add_ldflags -fsanitize=undefined
3003         case "$toolchain" in
3004             clang-usan)
3005                 add_cflags -O1
3006                 ;;
3007         esac
3008     ;;
3009     valgrind-*)
3010         target_exec_default="valgrind"
3011         case "$toolchain" in
3012             valgrind-massif)
3013                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
3014                 ;;
3015             valgrind-memcheck)
3016                 target_exec_args="--track-origins=yes --leak-check=full"
3017                 ;;
3018         esac
3019     ;;
3020     msvc)
3021         # Check whether the current MSVC version needs the C99 converter.
3022         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3023         # support enough of C99 to build libav. Default to the new
3024         # behaviour if the regexp was unable to match anything, since this
3025         # successfully parses the version number of existing supported
3026         # versions that require the converter (MSVC 2010 and 2012).
3027         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3028         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3029             cc_default="cl"
3030         else
3031             cc_default="c99wrap cl"
3032         fi
3033         ld_default="$source_path/compat/windows/mslink"
3034         nm_default="dumpbin -symbols"
3035         ar_default="lib"
3036         case "$arch" in
3037         aarch64|arm64)
3038             as_default="armasm64"
3039             ;;
3040         arm*)
3041             as_default="armasm"
3042             ;;
3043         esac
3044         target_os_default="win32"
3045         # Use a relative path for TMPDIR. This makes sure all the
3046         # ffconf temp files are written with a relative path, avoiding
3047         # issues with msys/win32 path conversion for MSVC parameters
3048         # such as -Fo<file> or -out:<file>.
3049         TMPDIR=.
3050     ;;
3051     icl)
3052         cc_default="icl"
3053         ld_default="xilink"
3054         nm_default="dumpbin -symbols"
3055         ar_default="xilib"
3056         target_os_default="win32"
3057         TMPDIR=.
3058     ;;
3059     gcov)
3060         add_cflags  -fprofile-arcs -ftest-coverage
3061         add_ldflags -fprofile-arcs -ftest-coverage
3062     ;;
3063     llvm-cov)
3064         add_cflags -fprofile-arcs -ftest-coverage
3065         add_ldflags --coverage
3066     ;;
3067     hardened)
3068         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3069         add_cflags   -fno-strict-overflow -fstack-protector-all
3070         add_ldflags  -Wl,-z,relro -Wl,-z,now
3071     ;;
3072     ?*)
3073         die "Unknown toolchain $toolchain"
3074     ;;
3075 esac
3076
3077 if test -n "$cross_prefix"; then
3078     test -n "$arch" && test -n "$target_os" ||
3079         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3080     enable cross_compile
3081 fi
3082
3083 ar_default="${cross_prefix}${ar_default}"
3084 cc_default="${cross_prefix}${cc_default}"
3085 objcc_default="${cross_prefix}${objcc_default}"
3086 x86asmexe_default="${cross_prefix}${x86asmexe_default}"
3087 nm_default="${cross_prefix}${nm_default}"
3088 pkg_config_default="${cross_prefix}${pkg_config_default}"
3089 ranlib="${cross_prefix}${ranlib}"
3090 strip="${cross_prefix}${strip}"
3091
3092 sysinclude_default="${sysroot}/usr/include"
3093
3094 set_default arch cc pkg_config sysinclude target_exec target_os x86asmexe
3095 enabled cross_compile || host_cc_default=$cc
3096 set_default host_cc
3097
3098 if ! $pkg_config --version >/dev/null 2>&1; then
3099     warn "$pkg_config not found, library detection may fail."
3100     pkg_config=false
3101 fi
3102
3103 exesuf() {
3104     case $1 in
3105         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3106     esac
3107 }
3108
3109 EXESUF=$(exesuf $target_os)
3110 HOSTEXESUF=$(exesuf $host_os)
3111
3112 # set temporary file name
3113 : ${TMPDIR:=$TEMPDIR}
3114 : ${TMPDIR:=$TMP}
3115 : ${TMPDIR:=/tmp}
3116
3117 if ! test_cmd mktemp -u XXXXXX; then
3118     # simple replacement for missing mktemp
3119     # NOT SAFE FOR GENERAL USE
3120     mktemp(){
3121         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3122         echo "$tmpname"
3123         mkdir "$tmpname"
3124     }
3125 fi
3126
3127 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
3128     die "Unable to create temporary directory in $TMPDIR."
3129
3130 tmpfile(){
3131     tmp="${AVTMPDIR}/test"$2
3132     (set -C; exec > $tmp) 2> /dev/null ||
3133         die "Unable to create temporary file in $AVTMPDIR."
3134     eval $1=$tmp
3135 }
3136
3137 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3138 trap 'exit 2' INT
3139
3140 tmpfile TMPASM .asm
3141 tmpfile TMPC   .c
3142 tmpfile TMPE   $EXESUF
3143 tmpfile TMPH   .h
3144 tmpfile TMPO   .o
3145 tmpfile TMPS   .S
3146 tmpfile TMPSH  .sh
3147 tmpfile TMPV   .ver
3148
3149 unset -f mktemp
3150
3151 chmod +x $TMPE
3152
3153 # make sure we can execute files in $TMPDIR
3154 cat > $TMPSH 2>> $logfile <<EOF
3155 #! /bin/sh
3156 EOF
3157 chmod +x $TMPSH >> $logfile 2>&1
3158 if ! $TMPSH >> $logfile 2>&1; then
3159     cat <<EOF
3160 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3161 variable to another directory and make sure that it is not mounted noexec.
3162 EOF
3163     die "Sanity test failed."
3164 fi
3165
3166 armasm_flags(){
3167     for flag; do
3168         case $flag in
3169             # Filter out MSVC cl.exe options from cflags that shouldn't
3170             # be passed to gas-preprocessor
3171             -M[TD]*)                                            ;;
3172             *)                  echo $flag                      ;;
3173         esac
3174    done
3175 }
3176
3177 cparser_flags(){
3178     for flag; do
3179         case $flag in
3180             -Wno-switch)             echo -Wno-switch-enum ;;
3181             -Wno-format-zero-length) ;;
3182             -Wdisabled-optimization) ;;
3183             -Wno-pointer-sign)       echo -Wno-other ;;
3184             *)                       echo $flag ;;
3185         esac
3186     done
3187 }
3188
3189 msvc_common_flags(){
3190     for flag; do
3191         case $flag in
3192             # In addition to specifying certain flags under the compiler
3193             # specific filters, they must be specified here as well or else the
3194             # generic catch all at the bottom will print the original flag.
3195             -Wall)                ;;
3196             -Wextra)              ;;
3197             -std=c99)             ;;
3198             # Common flags
3199             -fomit-frame-pointer) ;;
3200             -g)                   echo -Z7 ;;
3201             -fno-math-errno)      ;;
3202             -fno-common)          ;;
3203             -fno-signed-zeros)    ;;
3204             -fPIC)                ;;
3205             -mthumb)              ;;
3206             -march=*)             ;;
3207             -lz)                  echo zlib.lib ;;
3208             -lx264)               echo libx264.lib ;;
3209             -l*)                  echo ${flag#-l}.lib ;;
3210             -L*)                  echo -libpath:${flag#-L} ;;
3211             *)                    echo $flag ;;
3212         esac
3213     done
3214 }
3215
3216 msvc_flags(){
3217     msvc_common_flags "$@"
3218     for flag; do
3219         case $flag in
3220             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3221                                        -wd4554 ;;
3222             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3223                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3224                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3225                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3226         esac
3227     done
3228 }
3229
3230 icl_flags(){
3231     msvc_common_flags "$@"
3232     for flag; do
3233         case $flag in
3234             # Despite what Intel's documentation says -Wall, which is supported
3235             # on Windows, does enable remarks so disable them here.
3236             -Wall)                echo $flag -Qdiag-disable:remark ;;
3237             -std=c99)             echo -Qstd=c99 ;;
3238         esac
3239     done
3240 }
3241
3242 suncc_flags(){
3243     for flag; do
3244         case $flag in
3245             -march=*|-mcpu=*)
3246                 case "${flag#*=}" in
3247                     native)                   echo -xtarget=native       ;;
3248                     v9|niagara)               echo -xarch=sparc          ;;
3249                     ultrasparc)               echo -xarch=sparcvis       ;;
3250                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3251                     i586|pentium)             echo -xchip=pentium        ;;
3252                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3253                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3254                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3255                     pentium4*)          echo -xtarget=pentium4           ;;
3256                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3257                     *-sse3)             echo -xarch=sse3                 ;;
3258                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3259                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3260                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3261                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3262                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3263                     k8|opteron|athlon64|athlon-fx)
3264                                                echo -xarch=sse2a         ;;
3265                     athlon*)                   echo -xarch=pentium_proa  ;;
3266                 esac
3267                 ;;
3268             -std=c99)             echo -xc99              ;;
3269             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3270             -fPIC)                echo -KPIC -xcode=pic32 ;;
3271             -W*,*)                echo $flag              ;;
3272             -f*-*|-W*|-mimpure-text)                      ;;
3273             -shared)              echo -G                 ;;
3274             *)                    echo $flag              ;;
3275         esac
3276     done
3277 }
3278
3279 probe_cc(){
3280     pfx=$1
3281     _cc=$2
3282
3283     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3284     unset _ld_o _ldflags _ld_lib _ld_path
3285     unset _depflags _DEPCMD _DEPFLAGS
3286     _flags_filter=echo
3287
3288     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3289         _type=llvm_gcc
3290         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3291         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3292         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3293         _cflags_speed='-O3'
3294         _cflags_size='-Os'
3295     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3296         _type=gcc
3297         gcc_version=$($_cc --version | head -n1)
3298         gcc_basever=$($_cc -dumpversion)
3299         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3300         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3301         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3302         if ! $_cc -dumpversion | grep -q '^2\.'; then
3303             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3304         fi
3305         _cflags_speed='-O3'
3306         _cflags_size='-Os'
3307     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3308         _type=icc
3309         _ident=$($_cc --version | head -n1)
3310         _depflags='-MMD'
3311         _cflags_speed='-O3'
3312         _cflags_size='-Os'
3313         _cflags_noopt='-O1'
3314     elif $_cc -v 2>&1 | grep -q xlc; then
3315         _type=xlc
3316         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3317         _cflags_speed='-O5'
3318         _cflags_size='-O5 -qcompact'
3319     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3320         test -d "$sysroot" || die "No valid sysroot specified."
3321         _type=armcc
3322         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3323         armcc_conf="$PWD/armcc.conf"
3324         $_cc --arm_linux_configure                 \
3325              --arm_linux_config_file="$armcc_conf" \
3326              --configure_sysroot="$sysroot"        \
3327              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3328              die "Error creating armcc configuration file."
3329         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3330         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3331         as_default="${cross_prefix}gcc"
3332         _depflags='-MMD'
3333         _cflags_speed='-O3'
3334         _cflags_size='-Os'
3335     elif $_cc -v 2>&1 | grep -q clang; then
3336         _type=clang
3337         _ident=$($_cc --version 2>/dev/null | head -n1)
3338         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3339         _cflags_speed='-O3'
3340         _cflags_size='-Os'
3341     elif $_cc -V 2>&1 | grep -q Sun; then
3342         _type=suncc
3343         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3344         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3345         _DEPFLAGS='-xM1 -xc99'
3346         _ldflags='-std=c99'
3347         _cflags_speed='-O5'
3348         _cflags_size='-O5 -xspace'
3349         _flags_filter=suncc_flags
3350     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3351         _type=pathscale
3352         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3353         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3354         _cflags_speed='-O2'
3355         _cflags_size='-Os'
3356         _flags_filter='filter_out -Wdisabled-optimization'
3357     elif $_cc -v 2>&1 | grep -q Open64; then
3358         _type=open64
3359         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3360         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3361         _cflags_speed='-O2'
3362         _cflags_size='-Os'
3363         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3364     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3365         _type=armasm
3366         _ident=$($_cc | head -n1)
3367         # 4509: "This form of conditional instruction is deprecated"
3368         _flags="-nologo -ignore 4509"
3369         _flags_filter=armasm_flags
3370     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3371         _type=msvc
3372         _ident=$($_cc 2>&1 | head -n1)
3373         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3374         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3375         _cflags_speed="-O2"
3376         _cflags_size="-O1"
3377         _cflags_noopt="-O1"
3378         if $_cc -nologo- 2>&1 | grep -q Linker; then
3379             _ld_o='-out:$@'
3380         else
3381             _ld_o='-Fe$@'
3382         fi
3383         _cc_o='-Fo$@'
3384         _cc_e='-P -Fi$@'
3385         _flags_filter=msvc_flags
3386         _ld_lib='lib%.a'
3387         _ld_path='-libpath:'
3388         _flags='-nologo'
3389     elif $_cc 2>&1 | grep -q Intel; then
3390         _type=icl
3391         _ident=$($_cc 2>&1 | head -n1)
3392         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3393         # Not only is O3 broken on 13.x+ but it is slower on all previous
3394         # versions (tested) as well.
3395         _cflags_speed="-O2"
3396         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3397         if $_cc 2>&1 | grep -q Linker; then
3398             _ld_o='-out:$@'
3399         else
3400             _ld_o='-Fe$@'
3401         fi
3402         _cc_o='-Fo$@'
3403         _cc_e='-P'
3404         _flags_filter=icl_flags
3405         _ld_lib='lib%.a'
3406         _ld_path='-libpath:'
3407         # -Qdiag-error to make icl error when seeing certain unknown arguments
3408         _flags='-nologo -Qdiag-error:4044,10157'
3409         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3410         # with MSVC which enables it by default.
3411         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3412     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3413         # lld can emulate multiple different linkers; in ms link.exe mode,
3414         # the -? parameter gives the help output which contains an identifyable
3415         # string, while it gives an error in other modes.
3416         _type=lld-link
3417         # The link.exe mode doesn't have a switch for getting the version,
3418         # but we can force it back to gnu mode and get the version from there.
3419         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3420         _ld_o='-out:$@'
3421         _flags_filter=msvc_flags
3422         _ld_lib='lib%.a'
3423         _ld_path='-libpath:'
3424     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3425         _type=cparser
3426         _ident=$($_cc --version | head -n1)
3427         _depflags='-MMD'
3428         _cflags_speed='-O4'
3429         _cflags_size='-O2'
3430         _flags_filter=cparser_flags
3431     fi
3432
3433     eval ${pfx}_type=\$_type
3434     eval ${pfx}_ident=\$_ident
3435 }
3436
3437 set_ccvars(){
3438     eval ${1}_C=\${_cc_c-\${${1}_C}}
3439     eval ${1}_E=\${_cc_e-\${${1}_E}}
3440     eval ${1}_O=\${_cc_o-\${${1}_O}}
3441
3442     if [ -n "$_depflags" ]; then
3443         eval ${1}_DEPFLAGS=\$_depflags
3444     else
3445         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3446         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3447         eval DEP${1}FLAGS=\$_flags
3448     fi
3449 }
3450
3451 probe_cc cc "$cc"
3452 cflags_filter=$_flags_filter
3453 cflags_speed=$_cflags_speed
3454 cflags_size=$_cflags_size
3455 cflags_noopt=$_cflags_noopt
3456 add_cflags $_flags $_cflags
3457 cc_ldflags=$_ldflags
3458 set_ccvars CC
3459
3460 probe_cc hostcc "$host_cc"
3461 host_cflags_filter=$_flags_filter
3462 host_cflags_speed=$_cflags_speed
3463 add_host_cflags  $_flags $_cflags
3464 set_ccvars HOSTCC
3465
3466 test -n "$cc_type" && enable $cc_type ||
3467     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3468
3469 : ${as_default:=$cc}
3470 : ${objcc_default:=$cc}
3471 : ${dep_cc_default:=$cc}
3472 : ${ld_default:=$cc}
3473 : ${host_ld_default:=$host_cc}
3474 set_default ar as objcc dep_cc ld host_ld
3475
3476 probe_cc as "$as"
3477 asflags_filter=$_flags_filter
3478 add_asflags $_flags $_cflags
3479 set_ccvars AS
3480
3481 probe_cc objcc "$objcc"
3482 objcflags_filter=$_flags_filter
3483 add_objcflags $_flags $_cflags
3484 set_ccvars OBJC
3485
3486 probe_cc ld "$ld"
3487 ldflags_filter=$_flags_filter
3488 add_ldflags $_flags $_ldflags
3489 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3490 LD_O=${_ld_o-$LD_O}
3491 LD_LIB=${_ld_lib-$LD_LIB}
3492 LD_PATH=${_ld_path-$LD_PATH}
3493
3494 probe_cc hostld "$host_ld"
3495 host_ldflags_filter=$_flags_filter
3496 add_host_ldflags $_flags $_ldflags
3497 HOSTLD_O=${_ld_o-$HOSTLD_O}
3498
3499 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3500     probe_cc depcc "$dep_cc"
3501     CCDEP=${_DEPCMD:-$DEPCMD}
3502     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3503     DEPCCFLAGS=$_flags
3504 fi
3505
3506 if $ar 2>&1 | grep -q Microsoft; then
3507     arflags="-nologo"
3508     ar_o='-out:$@'
3509 else
3510     arflags="rc"
3511     ar_o='$@'
3512 fi
3513
3514 add_cflags $extra_cflags
3515 add_objcflags $extra_objcflags
3516 add_asflags $extra_cflags
3517
3518 if test -n "$sysroot"; then
3519     case "$cc_type" in
3520         gcc|llvm_gcc|clang)
3521             add_cppflags --sysroot="$sysroot"
3522             add_ldflags --sysroot="$sysroot"
3523         ;;
3524     esac
3525 fi
3526
3527 if test "$cpu" = host; then
3528     enabled cross_compile &&
3529         die "--cpu=host makes no sense when cross-compiling."
3530
3531     case "$cc_type" in
3532         gcc|llvm_gcc)
3533             check_native(){
3534                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3535                 sed -n "/cc1.*$1=/{
3536                             s/.*$1=\\([^ ]*\\).*/\\1/
3537                             p
3538                             q
3539                         }" $TMPE
3540             }
3541             cpu=$(check_native -march || check_native -mcpu)
3542         ;;
3543     esac
3544
3545     test "${cpu:-host}" = host &&
3546         die "--cpu=host not supported with compiler $cc"
3547 fi
3548
3549 # Deal with common $arch aliases
3550 case "$arch" in
3551     aarch64|arm64)
3552         arch="aarch64"
3553     ;;
3554     arm*)
3555         arch="arm"
3556     ;;
3557     mips*|IP*)
3558         case "$arch" in
3559         *el)
3560             add_cppflags -EL
3561             add_ldflags -EL
3562         ;;
3563         *eb)
3564             add_cppflags -EB
3565             add_ldflags -EB
3566         ;;
3567         esac
3568         arch="mips"
3569     ;;
3570     parisc*|hppa*)
3571         arch="parisc"
3572     ;;
3573     "Power Macintosh"|ppc*|powerpc*)
3574         arch="ppc"
3575     ;;
3576     s390|s390x)
3577         arch="s390"
3578     ;;
3579     sh4|sh)
3580         arch="sh4"
3581     ;;
3582     sun4u|sparc*)
3583         arch="sparc"
3584     ;;
3585     tilegx|tile-gx)
3586         arch="tilegx"
3587     ;;
3588     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3589         arch="x86"
3590     ;;
3591 esac
3592
3593 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3594 enable $arch
3595
3596 # Add processor-specific flags
3597 if enabled aarch64; then
3598
3599     case $cpu in
3600         armv*)
3601             cpuflags="-march=$cpu"
3602         ;;
3603         *)
3604             cpuflags="-mcpu=$cpu"
3605         ;;
3606     esac
3607
3608 elif enabled alpha; then
3609
3610     cpuflags="-mcpu=$cpu"
3611
3612 elif enabled arm; then
3613
3614     check_arm_arch() {
3615         test_cpp_condition stddef.h \
3616             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3617             $cpuflags
3618     }
3619
3620     probe_arm_arch() {
3621         if   check_arm_arch 4;        then echo armv4
3622         elif check_arm_arch 4T;       then echo armv4t
3623         elif check_arm_arch 5;        then echo armv5
3624         elif check_arm_arch 5E;       then echo armv5e
3625         elif check_arm_arch 5T;       then echo armv5t
3626         elif check_arm_arch 5TE;      then echo armv5te
3627         elif check_arm_arch 5TEJ;     then echo armv5te
3628         elif check_arm_arch 6;        then echo armv6
3629         elif check_arm_arch 6J;       then echo armv6j
3630         elif check_arm_arch 6K;       then echo armv6k
3631         elif check_arm_arch 6Z;       then echo armv6z
3632         elif check_arm_arch 6ZK;      then echo armv6zk
3633         elif check_arm_arch 6T2;      then echo armv6t2
3634         elif check_arm_arch 7;        then echo armv7
3635         elif check_arm_arch 7A  7_A;  then echo armv7-a
3636         elif check_arm_arch 7S;       then echo armv7-a
3637         elif check_arm_arch 7R  7_R;  then echo armv7-r
3638         elif check_arm_arch 7M  7_M;  then echo armv7-m
3639         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3640         elif check_arm_arch 8A  8_A;  then echo armv8-a
3641         fi
3642     }
3643
3644     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3645
3646     case $cpu in
3647         armv*)
3648             cpuflags="-march=$cpu"
3649             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3650         ;;
3651         *)
3652             cpuflags="-mcpu=$cpu"
3653             case $cpu in
3654                 cortex-a*)                               subarch=armv7a  ;;
3655                 cortex-r*)                               subarch=armv7r  ;;
3656                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3657                 arm11*)                                  subarch=armv6   ;;
3658                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3659                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3660                 *)                             subarch=$(probe_arm_arch) ;;
3661             esac
3662         ;;
3663     esac
3664
3665     case "$subarch" in
3666         armv5t*)    enable fast_clz                ;;
3667         armv[6-8]*) enable fast_clz fast_unaligned ;;
3668     esac
3669
3670 elif enabled avr32; then
3671
3672     case $cpu in
3673         ap7[02]0[0-2])
3674             subarch="avr32_ap"
3675             cpuflags="-mpart=$cpu"
3676         ;;
3677         ap)
3678             subarch="avr32_ap"
3679             cpuflags="-march=$cpu"
3680         ;;
3681         uc3[ab]*)
3682             subarch="avr32_uc"
3683             cpuflags="-mcpu=$cpu"
3684         ;;
3685         uc)
3686             subarch="avr32_uc"
3687             cpuflags="-march=$cpu"
3688         ;;
3689     esac
3690
3691 elif enabled bfin; then
3692
3693     cpuflags="-mcpu=$cpu"
3694
3695 elif enabled mips; then
3696
3697     cpuflags="-march=$cpu"
3698
3699 elif enabled ppc; then
3700
3701     disable ldbrx
3702
3703     case $(tolower $cpu) in
3704         601|ppc601|powerpc601)
3705             cpuflags="-mcpu=601"
3706             disable altivec
3707         ;;
3708         603*|ppc603*|powerpc603*)
3709             cpuflags="-mcpu=603"
3710             disable altivec
3711         ;;
3712         604*|ppc604*|powerpc604*)
3713             cpuflags="-mcpu=604"
3714             disable altivec
3715         ;;
3716         g3|75*|ppc75*|powerpc75*)
3717             cpuflags="-mcpu=750"
3718             disable altivec
3719         ;;
3720         g4|745*|ppc745*|powerpc745*)
3721             cpuflags="-mcpu=7450"
3722             disable vsx
3723         ;;
3724         74*|ppc74*|powerpc74*)
3725             cpuflags="-mcpu=7400"
3726             disable vsx
3727         ;;
3728         g5|970|ppc970|powerpc970)
3729             cpuflags="-mcpu=970"
3730             disable vsx
3731         ;;
3732         power[3-6]*)
3733             cpuflags="-mcpu=$cpu"
3734             disable vsx
3735         ;;
3736         power[7-8]*)
3737             cpuflags="-mcpu=$cpu"
3738             enable ldbrx
3739         ;;
3740         cell)
3741             cpuflags="-mcpu=cell"
3742             enable ldbrx
3743             disable vsx
3744         ;;
3745         e500mc)
3746             cpuflags="-mcpu=e500mc"
3747             disable altivec
3748         ;;
3749         e500v2)
3750             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3751             disable altivec
3752             disable dcbzl
3753         ;;
3754         e500)
3755             cpuflags="-mcpu=8540 -mhard-float"
3756             disable altivec
3757             disable dcbzl
3758         ;;
3759     esac
3760
3761 elif enabled sparc; then
3762
3763     case $cpu in
3764         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3765             cpuflags="-mcpu=$cpu"
3766         ;;
3767         ultrasparc*|niagara[234])
3768             cpuflags="-mcpu=$cpu"
3769         ;;
3770     esac
3771
3772 elif enabled x86; then
3773
3774     case $cpu in
3775         i[345]86|pentium)
3776             cpuflags="-march=$cpu"
3777             disable i686
3778             disable mmx
3779         ;;
3780         # targets that do NOT support nopl and conditional mov (cmov)
3781         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3782             cpuflags="-march=$cpu"
3783             disable i686
3784         ;;
3785         # targets that do support nopl and conditional mov (cmov)
3786         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3787             cpuflags="-march=$cpu"
3788             enable i686
3789             enable fast_cmov
3790         ;;
3791         # targets that do support conditional mov but on which it's slow
3792         pentium4|pentium4m|prescott|nocona)
3793             cpuflags="-march=$cpu"
3794             enable i686
3795             disable fast_cmov
3796         ;;
3797     esac
3798
3799 fi
3800
3801 if [ "$cpu" != generic ]; then
3802     add_cflags  $cpuflags
3803     add_asflags $cpuflags
3804     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3805 fi
3806
3807 # compiler sanity check
3808 test_exec <<EOF
3809 int main(void){ return 0; }
3810 EOF
3811 if test "$?" != 0; then
3812     echo "$cc is unable to create an executable file."
3813     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3814         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3815         echo "Only do this if you know what cross compiling means."
3816     fi
3817     die "C compiler test failed."
3818 fi
3819
3820 add_cppflags -D_ISOC99_SOURCE
3821
3822 # some compilers silently accept -std=c11, so we also need to check that the
3823 # version macro is defined properly
3824 test_cpp_condition stdlib.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
3825     add_cflags -std=c11 ||
3826     check_cflags -std=c99
3827
3828 check_cppflags -D_FILE_OFFSET_BITS=64
3829 check_cppflags -D_LARGEFILE_SOURCE
3830
3831 add_host_cppflags -D_ISOC99_SOURCE
3832 check_host_cflags -std=c99
3833 check_host_cflags -Wall
3834 check_host_cflags $host_cflags_speed
3835
3836 check_64bit(){
3837     arch32=$1
3838     arch64=$2
3839     expr=${3:-'sizeof(void *) > 4'}
3840     test_code cc "" "int test[2*($expr) - 1]" &&
3841         subarch=$arch64 || subarch=$arch32
3842     enable $subarch
3843 }
3844
3845 case "$arch" in
3846     aarch64|alpha|ia64)
3847         enabled shared && enable_weak pic
3848     ;;
3849     mips)
3850         check_64bit mips mips64 '_MIPS_SIM > 1'
3851         enabled shared && enable_weak pic
3852     ;;
3853     parisc)
3854         check_64bit parisc parisc64
3855         enabled shared && enable_weak pic
3856     ;;
3857     ppc)
3858         check_64bit ppc ppc64
3859         enabled shared && enable_weak pic
3860     ;;
3861     s390)
3862         check_64bit s390 s390x
3863         enabled shared && enable_weak pic
3864     ;;
3865     sparc)
3866         check_64bit sparc sparc64
3867         enabled shared && enable_weak pic
3868     ;;
3869     x86)
3870         check_64bit x86_32 x86_64
3871         if enabled x86_64; then
3872             enabled shared && enable_weak pic
3873             objformat=elf64
3874         fi
3875     ;;
3876 esac
3877
3878 # OS specific
3879 case $target_os in
3880     aix)
3881         SHFLAGS=-shared
3882         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3883         enabled shared && add_ldflags -Wl,-brtl
3884         arflags='-Xany -r -c'
3885         ;;
3886     android)
3887         disable symver
3888         enable section_data_rel_ro
3889         SLIB_INSTALL_NAME='$(SLIBNAME)'
3890         SLIB_INSTALL_LINKS=
3891         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3892         ;;
3893     haiku)
3894         prefix_default="/boot/common"
3895         network_extralibs="-lnetwork"
3896         host_extralibs=
3897         ;;
3898     sunos)
3899         SHFLAGS='-shared -Wl,-h,$$(@F)'
3900         enabled x86 && append SHFLAGS -mimpure-text
3901         network_extralibs="-lsocket -lnsl"
3902         # When using suncc to build, the Solaris linker will mark
3903         # an executable with each instruction set encountered by
3904         # the Solaris assembler.  As our libraries contain their own
3905         # guards for processor-specific code, instead suppress
3906         # generation of the HWCAPS ELF section on Solaris x86 only.
3907         enabled_all suncc x86 &&
3908             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3909             add_ldflags -Wl,-M,mapfile
3910         nm_default='nm -P -g'
3911         version_script='-M'
3912         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3913         ;;
3914     netbsd)
3915         disable symver
3916         oss_indev_extralibs="-lossaudio"
3917         ;;
3918     openbsd|bitrig)
3919         disable symver
3920         SHFLAGS='-shared'
3921         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3922         SLIB_INSTALL_LINKS=
3923         oss_indev_extralibs="-lossaudio"
3924         ;;
3925     dragonfly)
3926         disable symver
3927         ;;
3928     freebsd)
3929         ;;
3930     bsd/os)
3931         add_extralibs -lpoll -lgnugetopt
3932         ;;
3933     darwin)
3934         enabled ppc && add_asflags -force_cpusubtype_ALL
3935         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3936         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3937         add_ldflags -Wl,-dynamic,-search_paths_first
3938         check_cflags -Werror=partial-availability
3939         SLIBSUF=".dylib"
3940         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3941         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3942         enabled x86_64 && objformat="macho64" || objformat="macho32"
3943         enabled_any pic shared ||
3944             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3945         check_header dispatch/dispatch.h &&
3946             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3947         if test -n "$sysroot"; then
3948             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
3949             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
3950         fi
3951         ;;
3952     msys*)
3953         die "Native MSYS builds are discouraged, please use the MINGW environment."
3954         ;;
3955     mingw32*|mingw64*)
3956         target_os=mingw32
3957         LIBTARGET=i386
3958         if enabled x86_64; then
3959             LIBTARGET="i386:x86-64"
3960         elif enabled arm; then
3961             LIBTARGET="arm"
3962         elif enabled aarch64; then
3963             LIBTARGET="arm64"
3964         fi
3965         if enabled shared; then
3966             # Cannot build both shared and static libs when using dllimport.
3967             disable static
3968         fi
3969         check_ldflags -Wl,--nxcompat
3970         check_ldflags -Wl,--dynamicbase
3971         shlibdir_default="$bindir_default"
3972         SLIBPREF=""
3973         SLIBSUF=".dll"
3974         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3975         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3976         SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3977         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3978         SLIB_INSTALL_LINKS=
3979         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3980         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3981         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3982         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-auto-image-base $$(@:$(SLIBSUF)=.def)'
3983         enabled x86_64 && objformat="win64" || objformat="win32"
3984         dlltool="${cross_prefix}dlltool"
3985         ranlib=:
3986         enable dos_paths
3987         ;;
3988     win32|win64)
3989         disable symver
3990         if enabled shared; then
3991             # Link to the import library instead of the normal static library
3992             # for shared libs.
3993             LD_LIB='%.lib'
3994             # Cannot build both shared and static libs with MSVC or icl.
3995             disable static
3996         fi
3997         shlibdir_default="$bindir_default"
3998         SLIBPREF=""
3999         SLIBSUF=".dll"
4000         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4001         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4002         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4003         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4004         SLIB_INSTALL_LINKS=
4005         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4006         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4007         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4008         enabled x86_64 && objformat="win64" || objformat="win32"
4009         ranlib=:
4010         enable dos_paths
4011         ;;
4012     cygwin*)
4013         target_os=cygwin
4014         shlibdir_default="$bindir_default"
4015         SLIBPREF="cyg"
4016         SLIBSUF=".dll"
4017         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4018         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4019         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4020         SLIB_INSTALL_LINKS=
4021         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
4022         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
4023         enabled x86_64 && objformat="win64" || objformat="win32"
4024         enable dos_paths
4025         ;;
4026     *-dos|freedos|opendos)
4027         network_extralibs="-lsocket"
4028         objformat="coff"
4029         enable dos_paths
4030         add_cppflags -U__STRICT_ANSI__
4031         ;;
4032     linux)
4033         enable section_data_rel_ro
4034         ;;
4035     irix*)
4036         target_os=irix
4037         ranlib="echo ignoring ranlib"
4038         ;;
4039     os/2*)
4040         ln_s="cp -f"
4041         objformat="aout"
4042         add_cppflags -D_GNU_SOURCE
4043         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4044         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4045         LIBSUF="_s.a"
4046         SLIBPREF=""
4047         SLIBSUF=".dll"
4048         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4049         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4050         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4051             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4052             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4053             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4054             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4055         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4056             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4057         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4058         enable dos_paths
4059         ;;
4060     gnu/kfreebsd)
4061         add_cppflags -D_BSD_SOURCE
4062         ;;
4063     gnu)
4064         ;;
4065     qnx)
4066         add_cppflags -D_QNX_SOURCE
4067         network_extralibs="-lsocket"
4068         ;;
4069     symbian)
4070         SLIBSUF=".dll"
4071         enable dos_paths
4072         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4073         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4074         add_ldflags -Wl,--target1-abs,--no-undefined \
4075                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4076                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4077         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4078                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4079                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4080         ;;
4081     minix)
4082         ;;
4083     none)
4084         ;;
4085     *)
4086         die "Unknown OS '$target_os'."
4087         ;;
4088 esac
4089
4090 # determine libc flavour
4091
4092 probe_libc(){
4093     pfx=$1
4094     pfx_no_=${pfx%_}
4095     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4096     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4097         eval ${pfx}libc_type=uclibc
4098         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4099     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4100         eval ${pfx}libc_type=glibc
4101         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4102     # MinGW headers can be installed on Cygwin, so check for newlib first.
4103     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4104         eval ${pfx}libc_type=newlib
4105         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4106     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4107     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4108         eval ${pfx}libc_type=mingw64
4109         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4110         eval test \$${pfx_no_}cc_type = "gcc" &&
4111             add_${pfx}cppflags -D__printf__=__gnu_printf__
4112     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4113          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4114         eval ${pfx}libc_type=mingw32
4115         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4116             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4117             die "ERROR: MinGW32 runtime version must be >= 3.15."
4118         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4119         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
4120             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4121         test_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
4122             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4123         eval test \$${pfx_no_}cc_type = "gcc" &&
4124             add_${pfx}cppflags -D__printf__=__gnu_printf__
4125     elif test_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then