build: Group external library protocols separately
[ffmpeg.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     bcrypt
1707     sdl
1708     vaapi_1
1709     vaapi_drm
1710     vaapi_x11
1711     vdpau_x11
1712 "
1713
1714 TOOLCHAIN_FEATURES="
1715     as_arch_directive
1716     as_fpu_directive
1717     as_func
1718     as_object_arch
1719     asm_mod_q
1720     blocks_extension
1721     ebp_available
1722     ebx_available
1723     gnu_as
1724     ibm_asm
1725     inline_asm_labels
1726     pragma_deprecated
1727     symver_asm_label
1728     symver_gnu_asm
1729     vfp_args
1730     xform_asm
1731     xmm_clobbers
1732 "
1733
1734 TYPES_LIST="
1735     CUVIDDECODECREATEINFO_bitDepthMinus8
1736     socklen_t
1737     struct_addrinfo
1738     struct_group_source_req
1739     struct_ip_mreq_source
1740     struct_ipv6_mreq
1741     struct_pollfd
1742     struct_rusage_ru_maxrss
1743     struct_sockaddr_in6
1744     struct_sockaddr_sa_len
1745     struct_sockaddr_storage
1746     struct_v4l2_frmivalenum_discrete
1747 "
1748
1749 HAVE_LIST="
1750     $ARCH_EXT_LIST
1751     $(add_suffix _external $ARCH_EXT_LIST)
1752     $(add_suffix _inline   $ARCH_EXT_LIST)
1753     $ARCH_FEATURES
1754     $BUILTIN_LIST
1755     $HAVE_LIST_CMDLINE
1756     $HAVE_LIST_PUB
1757     $HEADERS_LIST
1758     $INTRINSICS_LIST
1759     $MATH_FUNCS
1760     $SYSTEM_FEATURES
1761     $SYSTEM_FUNCS
1762     $SYSTEM_LIBRARIES
1763     $THREADS_LIST
1764     $TOOLCHAIN_FEATURES
1765     $TYPES_LIST
1766 "
1767
1768 # options emitted with CONFIG_ prefix but not available on the command line
1769 CONFIG_EXTRA="
1770     aandcttables
1771     ac3dsp
1772     adts_header
1773     audio_frame_queue
1774     audiodsp
1775     blockdsp
1776     bswapdsp
1777     cabac
1778     cbs
1779     cbs_h264
1780     cbs_h265
1781     cbs_mpeg2
1782     dirac_parse
1783     dvprofile
1784     faandct
1785     faanidct
1786     fdctdsp
1787     flacdsp
1788     fmtconvert
1789     g722dsp
1790     gmp
1791     golomb
1792     gplv3
1793     h263dsp
1794     h264chroma
1795     h264dsp
1796     h264parse
1797     h264pred
1798     h264qpel
1799     hevcparse
1800     hpeldsp
1801     huffman
1802     huffyuvdsp
1803     huffyuvencdsp
1804     idctdsp
1805     iirfilter
1806     imdct15
1807     intrax8
1808     iso_media
1809     ividsp
1810     jpegtables
1811     lgplv3
1812     libx262
1813     libxcb_shape
1814     lpc
1815     lzf
1816     me_cmp
1817     mpeg_er
1818     mpegaudio
1819     mpegaudiodsp
1820     mpegaudioheader
1821     mpegvideo
1822     mpegvideoenc
1823     mss34dsp
1824     pixblockdsp
1825     qpeldsp
1826     qsv
1827     qsvdec
1828     qsvenc
1829     qsvvpp
1830     rangecoder
1831     riffdec
1832     riffenc
1833     rtpdec
1834     rtpenc_chain
1835     rv34dsp
1836     sinewin
1837     snappy
1838     srtp
1839     startcode
1840     texturedsp
1841     texturedspenc
1842     tpeldsp
1843     vaapi_encode
1844     vc1dsp
1845     videodsp
1846     vp3dsp
1847     vp56dsp
1848     vp8dsp
1849     wma_freqs
1850     wmv2dsp
1851 "
1852
1853 CMDLINE_SELECT="
1854     $ARCH_EXT_LIST
1855     $CONFIG_LIST
1856     $HAVE_LIST_CMDLINE
1857     $THREADS_LIST
1858     asm
1859     cross_compile
1860     debug
1861     extra_warnings
1862     logging
1863     lto
1864     optimizations
1865     rpath
1866 "
1867
1868 PATHS_LIST="
1869     bindir
1870     datadir
1871     docdir
1872     incdir
1873     libdir
1874     mandir
1875     prefix
1876     shlibdir
1877 "
1878
1879 CMDLINE_SET="
1880     $PATHS_LIST
1881     ar
1882     arch
1883     as
1884     cc
1885     objcc
1886     cpu
1887     cross_prefix
1888     custom_allocator
1889     dep_cc
1890     env
1891     extra_version
1892     host_cc
1893     host_cflags
1894     host_extralibs
1895     host_ld
1896     host_ldflags
1897     host_os
1898     ignore_tests
1899     ld
1900     logfile
1901     malloc_prefix
1902     nm
1903     optflags
1904     pkg_config
1905     pkg_config_flags
1906     samples
1907     sysinclude
1908     sysroot
1909     target_exec
1910     target_os
1911     target_path
1912     target_samples
1913     toolchain
1914     x86asmexe
1915 "
1916
1917 CMDLINE_APPEND="
1918     extra_cflags
1919     extra_objcflags
1920     host_cppflags
1921 "
1922
1923 # code dependency declarations
1924
1925 # architecture extensions
1926
1927 armv5te_deps="arm"
1928 armv6_deps="arm"
1929 armv6t2_deps="arm"
1930 armv8_deps="aarch64"
1931 neon_deps_any="aarch64 arm"
1932 intrinsics_neon_deps="neon"
1933 vfp_deps_any="aarch64 arm"
1934 vfpv3_deps="vfp"
1935
1936 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1937
1938 altivec_deps="ppc"
1939 dcbzl_deps="ppc"
1940 ldbrx_deps="ppc"
1941 ppc4xx_deps="ppc"
1942 vsx_deps="altivec"
1943 power8_deps="vsx"
1944
1945 loongson_deps="mips"
1946 mips32r1_deps="mips32"
1947 mips32r2_deps="mips32"
1948 mips32r6_deps="mips32"
1949 mips64r1_deps="mips64"
1950 mips64r2_deps="mips64"
1951 mips64r6_deps="mips64"
1952
1953 vis_deps="sparc"
1954
1955 cpunop_deps="i686"
1956 x86_64_select="i686"
1957 x86_64_suggest="fast_cmov"
1958
1959 amd3dnow_deps="mmx"
1960 amd3dnowext_deps="amd3dnow"
1961 i686_deps="x86"
1962 mmx_deps="x86"
1963 mmxext_deps="mmx"
1964 sse_deps="mmxext"
1965 sse2_deps="sse"
1966 sse3_deps="sse2"
1967 ssse3_deps="sse3"
1968 sse4_deps="ssse3"
1969 sse42_deps="sse4"
1970 avx_deps="sse42"
1971 xop_deps="avx"
1972 fma3_deps="avx"
1973 fma4_deps="avx"
1974 avx2_deps="avx"
1975
1976 mmx_external_deps="x86asm"
1977 mmx_inline_deps="inline_asm x86"
1978 mmx_suggest="mmx_external mmx_inline"
1979
1980 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1981     eval dep=\$${ext}_deps
1982     eval ${ext}_external_deps='"${dep}_external"'
1983     eval ${ext}_inline_deps='"${dep}_inline"'
1984     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1985 done
1986
1987 aligned_stack_if_any="aarch64 ppc x86"
1988 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1989 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1990 fast_unaligned_if_any="aarch64 ppc x86"
1991 simd_align_16_if_any="altivec neon sse"
1992 simd_align_32_if_any="avx"
1993
1994 # system capabilities
1995 symver_if_any="symver_asm_label symver_gnu_asm"
1996 valgrind_backtrace_conflict="optimizations"
1997 valgrind_backtrace_deps="valgrind_valgrind_h"
1998
1999 # threading support
2000 atomics_gcc_if="sync_val_compare_and_swap"
2001 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2002 atomics_win32_if="MemoryBarrier"
2003 atomics_native_if_any="$ATOMICS_LIST"
2004 w32threads_deps="atomics_native CONDITION_VARIABLE"
2005 threads_if_any="$THREADS_LIST"
2006
2007 # subsystems
2008 cbs_h264_select="cbs golomb"
2009 cbs_h265_select="cbs golomb"
2010 cbs_mpeg2_select="cbs"
2011 dct_select="rdft"
2012 dirac_parse_select="golomb"
2013 error_resilience_select="me_cmp"
2014 faandct_deps="faan"
2015 faandct_select="fdctdsp"
2016 faanidct_deps="faan"
2017 faanidct_select="idctdsp"
2018 h264dsp_select="startcode"
2019 hevcparse_select="golomb"
2020 intrax8_select="blockdsp idctdsp"
2021 mdct_select="fft"
2022 rdft_select="fft"
2023 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2024 mpeg_er_select="error_resilience"
2025 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2026 mpegaudiodsp_select="dct"
2027 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
2028 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2029 vc1dsp_select="h264chroma qpeldsp startcode"
2030
2031 # decoders / encoders
2032 aac_decoder_select="adts_header imdct15 mdct sinewin"
2033 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2034 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2035 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2036 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2037 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2038 adpcm_g722_decoder_select="g722dsp"
2039 adpcm_g722_encoder_select="g722dsp"
2040 aic_decoder_select="golomb idctdsp"
2041 alac_encoder_select="lpc"
2042 als_decoder_select="bswapdsp"
2043 amrnb_decoder_select="lsp"
2044 amrwb_decoder_select="lsp"
2045 amv_decoder_select="sp5x_decoder"
2046 ape_decoder_select="bswapdsp"
2047 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2048 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2049 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2050 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2051 atrac1_decoder_select="mdct sinewin"
2052 atrac3_decoder_select="mdct"
2053 atrac3p_decoder_select="mdct sinewin"
2054 bink_decoder_select="blockdsp hpeldsp"
2055 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2056 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2057 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2058 clearvideo_decoder_select="idctdsp"
2059 cllc_decoder_select="bswapdsp"
2060 comfortnoise_encoder_select="lpc"
2061 cook_decoder_select="audiodsp mdct sinewin"
2062 cscd_decoder_select="lzo"
2063 cscd_decoder_suggest="zlib"
2064 dca_decoder_select="fmtconvert mdct"
2065 dds_decoder_select="texturedsp"
2066 dnxhd_decoder_select="blockdsp idctdsp"
2067 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2068 dvvideo_decoder_select="dvprofile idctdsp"
2069 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2070 dxa_decoder_deps="zlib"
2071 dxv_decoder_select="lzf texturedsp"
2072 eac3_decoder_select="ac3_decoder"
2073 eac3_encoder_select="ac3_encoder"
2074 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2075 eatgq_decoder_select="aandcttables idctdsp"
2076 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2077 exr_decoder_deps="zlib"
2078 ffv1_decoder_select="rangecoder"
2079 ffv1_encoder_select="rangecoder"
2080 ffvhuff_decoder_select="huffyuv_decoder"
2081 ffvhuff_encoder_select="huffyuv_encoder"
2082 fic_decoder_select="golomb"
2083 flac_decoder_select="flacdsp"
2084 flac_encoder_select="bswapdsp flacdsp lpc"
2085 flashsv_decoder_deps="zlib"
2086 flashsv_encoder_deps="zlib"
2087 flashsv2_decoder_deps="zlib"
2088 flv_decoder_select="h263_decoder"
2089 flv_encoder_select="h263_encoder"
2090 fourxm_decoder_select="blockdsp bswapdsp"
2091 fraps_decoder_select="bswapdsp huffman"
2092 g2m_decoder_deps="zlib"
2093 g2m_decoder_select="blockdsp idctdsp jpegtables"
2094 h261_decoder_select="mpeg_er mpegvideo"
2095 h261_encoder_select="aandcttables mpegvideoenc"
2096 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2097 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2098 h263i_decoder_select="h263_decoder"
2099 h263p_encoder_select="h263_encoder"
2100 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2101 h264_decoder_suggest="error_resilience"
2102 hap_decoder_select="snappy texturedsp"
2103 hap_encoder_deps="libsnappy"
2104 hap_encoder_select="texturedspenc"
2105 hevc_decoder_select="bswapdsp cabac hevcparse videodsp"
2106 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2107 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2108 iac_decoder_select="imc_decoder"
2109 imc_decoder_select="bswapdsp fft mdct sinewin"
2110 indeo3_decoder_select="hpeldsp"
2111 indeo4_decoder_select="ividsp"
2112 indeo5_decoder_select="ividsp"
2113 interplay_video_decoder_select="hpeldsp"
2114 jpegls_decoder_select="mjpeg_decoder"
2115 jv_decoder_select="blockdsp"
2116 lagarith_decoder_select="huffyuvdsp"
2117 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2118 magicyuv_decoder_select="huffyuvdsp"
2119 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2120 metasound_decoder_select="lsp mdct sinewin"
2121 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2122 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2123 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2124 mjpegb_decoder_select="mjpeg_decoder"
2125 mlp_decoder_select="mlp_parser"
2126 motionpixels_decoder_select="bswapdsp"
2127 mp1_decoder_select="mpegaudio"
2128 mp1float_decoder_select="mpegaudio"
2129 mp2_decoder_select="mpegaudio"
2130 mp2float_decoder_select="mpegaudio"
2131 mp3_decoder_select="mpegaudio"
2132 mp3adu_decoder_select="mpegaudio"
2133 mp3adufloat_decoder_select="mpegaudio"
2134 mp3float_decoder_select="mpegaudio"
2135 mp3on4_decoder_select="mpegaudio"
2136 mp3on4float_decoder_select="mpegaudio"
2137 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2138 mpc8_decoder_select="mpegaudiodsp"
2139 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2140 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2141 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2142 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2143 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2144 mpeg4_encoder_select="h263_encoder"
2145 msa1_decoder_select="mss34dsp"
2146 msmpeg4v1_decoder_select="h263_decoder"
2147 msmpeg4v2_decoder_select="h263_decoder"
2148 msmpeg4v2_encoder_select="h263_encoder"
2149 msmpeg4v3_decoder_select="h263_decoder"
2150 msmpeg4v3_encoder_select="h263_encoder"
2151 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2152 mts2_decoder_select="mss34dsp"
2153 mxpeg_decoder_select="mjpeg_decoder"
2154 nellymoser_decoder_select="mdct sinewin"
2155 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2156 nuv_decoder_select="idctdsp lzo"
2157 on2avc_decoder_select="mdct"
2158 opus_decoder_deps="avresample"
2159 opus_decoder_select="imdct15"
2160 png_decoder_deps="zlib"
2161 png_encoder_deps="zlib"
2162 png_encoder_select="huffyuvencdsp"
2163 prores_decoder_select="idctdsp"
2164 prores_encoder_select="fdctdsp"
2165 qcelp_decoder_select="lsp"
2166 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2167 ra_144_encoder_select="audio_frame_queue lpc"
2168 ralf_decoder_select="golomb"
2169 rscc_decoder_deps="zlib"
2170 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2171 rv10_encoder_select="h263_encoder"
2172 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2173 rv20_encoder_select="h263_encoder"
2174 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2175 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2176 screenpresso_decoder_deps="zlib"
2177 sipr_decoder_select="lsp"
2178 sp5x_decoder_select="mjpeg_decoder"
2179 svq1_decoder_select="hpeldsp"
2180 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2181 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2182 svq3_decoder_suggest="zlib"
2183 tak_decoder_select="audiodsp"
2184 tdsc_decoder_deps="zlib"
2185 tdsc_decoder_select="mjpeg_decoder"
2186 theora_decoder_select="vp3_decoder"
2187 thp_decoder_select="mjpeg_decoder"
2188 tiff_decoder_suggest="zlib"
2189 tiff_encoder_suggest="zlib"
2190 truehd_decoder_select="mlp_decoder"
2191 truemotion2_decoder_select="bswapdsp"
2192 truespeech_decoder_select="bswapdsp"
2193 tscc_decoder_deps="zlib"
2194 txd_decoder_select="texturedsp"
2195 twinvq_decoder_select="mdct lsp sinewin"
2196 utvideo_decoder_select="bswapdsp huffyuvdsp"
2197 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2198 vble_decoder_select="huffyuvdsp"
2199 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2200 vc1image_decoder_select="vc1_decoder"
2201 vorbis_decoder_select="mdct"
2202 vorbis_encoder_select="mdct"
2203 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2204 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2205 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2206 vp6a_decoder_select="vp6_decoder"
2207 vp6f_decoder_select="vp6_decoder"
2208 vp7_decoder_select="h264pred videodsp vp8dsp"
2209 vp8_decoder_select="h264pred videodsp vp8dsp"
2210 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2211 webp_decoder_select="vp8_decoder"
2212 wmapro_decoder_select="mdct sinewin wma_freqs"
2213 wmav1_decoder_select="mdct sinewin wma_freqs"
2214 wmav1_encoder_select="mdct sinewin wma_freqs"
2215 wmav2_decoder_select="mdct sinewin wma_freqs"
2216 wmav2_encoder_select="mdct sinewin wma_freqs"
2217 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2218 wmv1_decoder_select="h263_decoder"
2219 wmv1_encoder_select="h263_encoder"
2220 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2221 wmv2_encoder_select="h263_encoder wmv2dsp"
2222 wmv3_decoder_select="vc1_decoder"
2223 wmv3image_decoder_select="wmv3_decoder"
2224 zerocodec_decoder_deps="zlib"
2225 zlib_decoder_deps="zlib"
2226 zlib_encoder_deps="zlib"
2227 zmbv_decoder_deps="zlib"
2228 zmbv_encoder_deps="zlib"
2229
2230 # hardware accelerators
2231 d3d11va_deps="dxva_h ID3D11VideoDecoder"
2232 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2233 vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
2234 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2235
2236 h263_vaapi_hwaccel_deps="vaapi"
2237 h263_vaapi_hwaccel_select="h263_decoder"
2238 h264_cuvid_hwaccel_deps="cuvid CUVIDH264PICPARAMS"
2239 h264_cuvid_hwaccel_select="h264_decoder"
2240 h264_d3d11va_hwaccel_deps="d3d11va"
2241 h264_d3d11va_hwaccel_select="h264_decoder"
2242 h264_d3d11va2_hwaccel_deps="d3d11va"
2243 h264_d3d11va2_hwaccel_select="h264_decoder"
2244 h264_dxva2_hwaccel_deps="dxva2"
2245 h264_dxva2_hwaccel_select="h264_decoder"
2246 h264_vaapi_hwaccel_deps="vaapi"
2247 h264_vaapi_hwaccel_select="h264_decoder"
2248 h264_vda_hwaccel_deps="vda"
2249 h264_vda_hwaccel_select="h264_decoder"
2250 h264_vda_old_hwaccel_deps="vda"
2251 h264_vda_old_hwaccel_select="h264_decoder"
2252 h264_vdpau_hwaccel_deps="vdpau"
2253 h264_vdpau_hwaccel_select="h264_decoder"
2254 hevc_cuvid_hwaccel_deps="cuvid CUVIDHEVCPICPARAMS"
2255 hevc_cuvid_hwaccel_select="hevc_decoder"
2256 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2257 hevc_d3d11va_hwaccel_select="hevc_decoder"
2258 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2259 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2260 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2261 hevc_dxva2_hwaccel_select="hevc_decoder"
2262 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2263 hevc_vaapi_hwaccel_select="hevc_decoder"
2264 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2265 hevc_vdpau_hwaccel_select="hevc_decoder"
2266 mpeg1_vdpau_hwaccel_deps="vdpau"
2267 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2268 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2269 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2270 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2271 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2272 mpeg2_dxva2_hwaccel_deps="dxva2"
2273 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2274 mpeg2_vaapi_hwaccel_deps="vaapi"
2275 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2276 mpeg2_vdpau_hwaccel_deps="vdpau"
2277 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2278 mpeg4_vaapi_hwaccel_deps="vaapi"
2279 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2280 mpeg4_vdpau_hwaccel_deps="vdpau"
2281 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2282 vc1_d3d11va_hwaccel_deps="d3d11va"
2283 vc1_d3d11va_hwaccel_select="vc1_decoder"
2284 vc1_d3d11va2_hwaccel_deps="d3d11va"
2285 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2286 vc1_dxva2_hwaccel_deps="dxva2"
2287 vc1_dxva2_hwaccel_select="vc1_decoder"
2288 vc1_vaapi_hwaccel_deps="vaapi"
2289 vc1_vaapi_hwaccel_select="vc1_decoder"
2290 vc1_vdpau_hwaccel_deps="vdpau"
2291 vc1_vdpau_hwaccel_select="vc1_decoder"
2292 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2293 vp8_vaapi_hwaccel_select="vp8_decoder"
2294 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2295 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2296 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2297 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2298 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2299
2300 # hardware-accelerated codecs
2301 amf_deps_any="libdl LoadLibrary"
2302 nvenc_deps_any="libdl LoadLibrary"
2303 omx_deps="libdl pthreads"
2304 omx_rpi_select="omx"
2305 qsv_deps="libmfx"
2306 qsvdec_select="qsv"
2307 qsvenc_select="qsv"
2308 qsvvpp_select="qsv"
2309 vaapi_encode_deps="vaapi"
2310
2311 hwupload_cuda_filter_deps="cuda"
2312 scale_npp_filter_deps="cuda libnpp"
2313
2314 h264_amf_encoder_deps="amf"
2315 h264_mmal_decoder_deps="mmal"
2316 h264_nvenc_encoder_deps="nvenc"
2317 h264_omx_encoder_deps="omx"
2318 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2319 h264_qsv_encoder_select="qsvenc"
2320 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2321 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2322 hevc_amf_encoder_deps="amf"
2323 hevc_nvenc_encoder_deps="nvenc"
2324 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2325 hevc_qsv_encoder_select="hevcparse qsvenc"
2326 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2327 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2328 mjpeg_qsv_encoder_deps="libmfx"
2329 mjpeg_qsv_encoder_select="qsvenc"
2330 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2331 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2332 mpeg2_mmal_decoder_deps="mmal"
2333 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2334 mpeg2_qsv_encoder_select="qsvenc"
2335 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2336 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2337 mpeg4_omx_encoder_deps="omx"
2338 vc1_mmal_decoder_deps="mmal"
2339 vc1_qsv_decoder_select="qsvdec vc1_parser"
2340 vp8_qsv_decoder_select="qsvdec vp8_parser"
2341 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2342 vp8_vaapi_encoder_select="vaapi_encode"
2343 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2344 vp9_vaapi_encoder_select="vaapi_encode"
2345
2346 nvenc_h264_encoder_select="h264_nvenc_encoder"
2347 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2348
2349 # parsers
2350 aac_parser_select="adts_header"
2351 h264_parser_select="golomb h264dsp h264parse"
2352 hevc_parser_select="hevcparse"
2353 mpegaudio_parser_select="mpegaudioheader"
2354 mpegvideo_parser_select="mpegvideo"
2355 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2356 vc1_parser_select="vc1dsp"
2357
2358 # bitstream_filters
2359 aac_adtstoasc_bsf_select="adts_header"
2360 h264_metadata_bsf_select="cbs_h264"
2361 h264_redundant_pps_bsf_select="cbs_h264"
2362 hevc_metadata_bsf_select="cbs_h265"
2363 mjpeg2jpeg_bsf_select="jpegtables"
2364 mpeg2_metadata_bsf_select="cbs_mpeg2"
2365 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2366
2367 # external libraries
2368 avisynth_deps="LoadLibrary"
2369 avxsynth_deps="libdl"
2370 avisynth_demuxer_deps_any="avisynth avxsynth"
2371 avisynth_demuxer_select="riffdec"
2372 libaom_av1_decoder_deps="libaom"
2373 libaom_av1_encoder_deps="libaom"
2374 libdcadec_decoder_deps="libdcadec"
2375 libfaac_encoder_deps="libfaac"
2376 libfaac_encoder_select="audio_frame_queue"
2377 libfdk_aac_decoder_deps="libfdk_aac"
2378 libfdk_aac_encoder_deps="libfdk_aac"
2379 libfdk_aac_encoder_select="audio_frame_queue"
2380 libgsm_decoder_deps="libgsm"
2381 libgsm_encoder_deps="libgsm"
2382 libgsm_ms_decoder_deps="libgsm"
2383 libgsm_ms_encoder_deps="libgsm"
2384 libilbc_decoder_deps="libilbc"
2385 libilbc_encoder_deps="libilbc"
2386 libkvazaar_encoder_deps="libkvazaar"
2387 libmp3lame_encoder_deps="libmp3lame"
2388 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2389 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2390 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2391 libopencore_amrnb_encoder_select="audio_frame_queue"
2392 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2393 libopenh264_decoder_deps="libopenh264"
2394 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2395 libopenh264_encoder_deps="libopenh264"
2396 libopenjpeg_decoder_deps="libopenjpeg"
2397 libopenjpeg_encoder_deps="libopenjpeg"
2398 libopus_decoder_deps="libopus"
2399 libopus_encoder_deps="libopus"
2400 libopus_encoder_select="audio_frame_queue"
2401 libschroedinger_decoder_deps="libschroedinger"
2402 libschroedinger_encoder_deps="libschroedinger"
2403 libspeex_decoder_deps="libspeex"
2404 libspeex_encoder_deps="libspeex"
2405 libspeex_encoder_select="audio_frame_queue"
2406 libtheora_encoder_deps="libtheora"
2407 libtwolame_encoder_deps="libtwolame"
2408 libvo_aacenc_encoder_deps="libvo_aacenc"
2409 libvo_aacenc_encoder_select="audio_frame_queue"
2410 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2411 libvorbis_encoder_deps="libvorbis"
2412 libvorbis_encoder_select="audio_frame_queue"
2413 libvpx_vp8_decoder_deps="libvpx"
2414 libvpx_vp8_encoder_deps="libvpx"
2415 libvpx_vp9_decoder_deps="libvpx"
2416 libvpx_vp9_encoder_deps="libvpx"
2417 libwavpack_encoder_deps="libwavpack"
2418 libwavpack_encoder_select="audio_frame_queue"
2419 libwebp_encoder_deps="libwebp"
2420 libx262_encoder_deps="libx262"
2421 libx264_encoder_deps="libx264"
2422 libx265_encoder_deps="libx265"
2423 libxavs_encoder_deps="libxavs"
2424 libxvid_encoder_deps="libxvid mkstemp"
2425
2426 # demuxers / muxers
2427 ac3_demuxer_select="ac3_parser"
2428 asf_demuxer_select="riffdec"
2429 asf_muxer_select="riffenc"
2430 asf_stream_muxer_select="asf_muxer"
2431 avi_demuxer_select="iso_media riffdec"
2432 avi_muxer_select="riffenc"
2433 caf_demuxer_select="iso_media riffdec"
2434 dash_muxer_select="mp4_muxer"
2435 dirac_demuxer_select="dirac_parser"
2436 dv_demuxer_select="dvprofile"
2437 dv_muxer_select="dvprofile"
2438 dxa_demuxer_select="riffdec"
2439 eac3_demuxer_select="ac3_parser"
2440 f4v_muxer_select="mov_muxer"
2441 flac_demuxer_select="flac_parser"
2442 hds_muxer_select="flv_muxer"
2443 hls_muxer_select="mpegts_muxer"
2444 ipod_muxer_select="mov_muxer"
2445 ismv_muxer_select="mov_muxer"
2446 matroska_audio_muxer_select="matroska_muxer"
2447 matroska_demuxer_select="iso_media riffdec"
2448 matroska_demuxer_suggest="bzlib lzo zlib"
2449 matroska_muxer_select="iso_media riffenc"
2450 mmf_muxer_select="riffenc"
2451 mov_demuxer_select="iso_media riffdec"
2452 mov_demuxer_suggest="zlib"
2453 mov_muxer_select="iso_media riffenc rtpenc_chain"
2454 mp3_demuxer_select="mpegaudio_parser"
2455 mp3_muxer_select="mpegaudioheader"
2456 mp4_muxer_select="mov_muxer"
2457 mpegts_demuxer_select="iso_media"
2458 mpegts_muxer_select="adts_muxer latm_muxer"
2459 mpegtsraw_demuxer_select="mpegts_demuxer"
2460 mxf_d10_muxer_select="mxf_muxer"
2461 nut_muxer_select="riffenc"
2462 nuv_demuxer_select="riffdec"
2463 oga_muxer_select="ogg_muxer"
2464 ogg_demuxer_select="dirac_parse"
2465 opus_muxer_select="ogg_muxer"
2466 psp_muxer_select="mov_muxer"
2467 rtp_demuxer_select="sdp_demuxer"
2468 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2469 rtsp_demuxer_select="http_protocol rtpdec"
2470 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2471 sap_demuxer_select="sdp_demuxer"
2472 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2473 sdp_demuxer_select="rtpdec"
2474 smoothstreaming_muxer_select="ismv_muxer"
2475 spdif_demuxer_select="adts_header"
2476 spdif_muxer_select="adts_header"
2477 spx_muxer_select="ogg_muxer"
2478 swf_demuxer_suggest="zlib"
2479 tak_demuxer_select="tak_parser"
2480 tg2_muxer_select="mov_muxer"
2481 tgp_muxer_select="mov_muxer"
2482 w64_demuxer_select="wav_demuxer"
2483 wav_demuxer_select="riffdec"
2484 wav_muxer_select="riffenc"
2485 webm_muxer_select="iso_media riffenc"
2486 wtv_demuxer_select="mpegts_demuxer riffdec"
2487 xmv_demuxer_select="riffdec"
2488 xwma_demuxer_select="riffdec"
2489
2490 # indevs
2491 alsa_indev_deps="alsa"
2492 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2493 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2494 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2495 fbdev_indev_deps="linux_fb_h"
2496 jack_indev_deps="libjack"
2497 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2498 libcdio_indev_deps="libcdio"
2499 libdc1394_indev_deps="libdc1394"
2500 oss_indev_deps_any="sys_soundcard_h"
2501 pulse_indev_deps="libpulse"
2502 sndio_indev_deps="sndio"
2503 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2504 vfwcap_indev_deps="vfw32 vfwcap_defines"
2505 xcbgrab_indev_deps="libxcb libxcb_shape"
2506 xcbgrab_indev_suggest="libxcb_shm libxcb_xfixes"
2507
2508 # protocols
2509 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
2510 ffrtmpcrypt_protocol_deps_any="gmp openssl"
2511 ffrtmpcrypt_protocol_select="tcp_protocol"
2512 ffrtmphttp_protocol_conflict="librtmp_protocol"
2513 ffrtmphttp_protocol_select="http_protocol"
2514 gopher_protocol_select="network"
2515 http_protocol_select="tcp_protocol"
2516 http_protocol_suggest="zlib"
2517 httpproxy_protocol_select="tcp_protocol"
2518 httpproxy_protocol_suggest="zlib"
2519 https_protocol_select="tls_protocol"
2520 https_protocol_suggest="zlib"
2521 icecast_protocol_select="http_protocol"
2522 mmsh_protocol_select="http_protocol"
2523 mmst_protocol_select="network"
2524 rtmp_protocol_conflict="librtmp_protocol"
2525 rtmp_protocol_select="tcp_protocol"
2526 rtmp_protocol_suggest="zlib"
2527 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2528 rtmpe_protocol_suggest="zlib"
2529 rtmps_protocol_conflict="librtmp_protocol"
2530 rtmps_protocol_select="tls_protocol"
2531 rtmps_protocol_suggest="zlib"
2532 rtmpt_protocol_select="ffrtmphttp_protocol"
2533 rtmpt_protocol_suggest="zlib"
2534 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2535 rtmpte_protocol_suggest="zlib"
2536 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2537 rtmpts_protocol_suggest="zlib"
2538 rtp_protocol_select="udp_protocol"
2539 sctp_protocol_deps="struct_sctp_event_subscribe"
2540 sctp_protocol_select="network"
2541 srtp_protocol_select="rtp_protocol srtp"
2542 tcp_protocol_select="network"
2543 tls_protocol_deps_any="gnutls openssl"
2544 tls_protocol_select="tcp_protocol"
2545 udp_protocol_select="network"
2546 unix_protocol_deps="sys_un_h"
2547 unix_protocol_select="network"
2548
2549 # external library protocols
2550 librtmp_protocol_deps="librtmp"
2551 librtmpe_protocol_deps="librtmp"
2552 librtmps_protocol_deps="librtmp"
2553 librtmpt_protocol_deps="librtmp"
2554 librtmpte_protocol_deps="librtmp"
2555 libsrt_protocol_deps="libsrt"
2556 libsrt_protocol_select="network"
2557
2558 # filters
2559 asyncts_filter_deps="avresample"
2560 blackframe_filter_deps="gpl"
2561 boxblur_filter_deps="gpl"
2562 bs2b_filter_deps="libbs2b"
2563 cropdetect_filter_deps="gpl"
2564 deinterlace_qsv_filter_deps="libmfx"
2565 deinterlace_vaapi_filter_deps="vaapi"
2566 delogo_filter_deps="gpl"
2567 drawtext_filter_deps="libfreetype"
2568 drawtext_filter_suggest="libfontconfig"
2569 frei0r_filter_deps="frei0r libdl"
2570 frei0r_src_filter_deps="frei0r libdl"
2571 hdcd_filter_deps="libhdcd"
2572 hqdn3d_filter_deps="gpl"
2573 interlace_filter_deps="gpl"
2574 movie_filter_deps="avcodec avformat"
2575 ocv_filter_deps="libopencv"
2576 overlay_qsv_filter_deps="libmfx"
2577 overlay_qsv_filter_select="qsvvpp"
2578 resample_filter_deps="avresample"
2579 scale_filter_deps="swscale"
2580 scale_qsv_filter_deps="libmfx"
2581 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2582 vpp_qsv_filter_deps="libmfx"
2583 vpp_qsv_filter_select="qsvvpp"
2584
2585 # examples
2586 decode_audio_example_deps="avcodec avutil"
2587 decode_video_example_deps="avcodec avutil"
2588 encode_audio_example_deps="avcodec avutil"
2589 encode_video_example_deps="avcodec avutil"
2590 filter_audio_example_deps="avfilter avutil"
2591 metadata_example_deps="avformat avutil"
2592 output_example_deps="avcodec avformat avresample avutil swscale"
2593 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2594 transcode_aac_example_deps="avcodec avformat avresample"
2595
2596 # EXTRALIBS_LIST
2597 cpu_init_extralibs="pthreads_extralibs"
2598 cws2fws_extralibs="zlib_extralibs"
2599
2600 # libraries, in linking order
2601 avcodec_deps="avutil"
2602 avcodec_select="null_bsf"
2603 avdevice_deps="avformat avcodec avutil"
2604 avfilter_deps="avutil"
2605 avformat_deps="avcodec avutil"
2606 avformat_suggest="network"
2607 avresample_deps="avutil"
2608 swscale_deps="avutil"
2609
2610 avcodec_extralibs="pthreads_extralibs libm_extralibs"
2611 avdevice_extralibs="libm_extralibs"
2612 avformat_extralibs="libm_extralibs"
2613 avfilter_extralibs="pthreads_extralibs libm_extralibs"
2614 avresample_extralibs="libm_extralibs"
2615 avutil_extralibs="bcrypt_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"
2616 swscale_extralibs="libm_extralibs"
2617
2618 # programs
2619 avconv_deps="avcodec avfilter avformat avresample swscale"
2620 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2621                fps_filter null_filter resample_filter scale_filter
2622                trim_filter"
2623 avconv_suggest="psapi shell32"
2624 avplay_deps="avcodec avfilter avformat avresample sdl"
2625 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2626 avplay_suggest="shell32"
2627 avprobe_deps="avcodec avformat"
2628 avprobe_suggest="shell32"
2629
2630 # documentation
2631 pod2man_deps="doc"
2632 texi2html_deps="doc"
2633
2634 # default parameters
2635
2636 logfile="avbuild/config.log"
2637
2638 # installation paths
2639 prefix_default="/usr/local"
2640 bindir_default='${prefix}/bin'
2641 datadir_default='${prefix}/share/avconv'
2642 docdir_default='${prefix}/share/doc/libav'
2643 incdir_default='${prefix}/include'
2644 libdir_default='${prefix}/lib'
2645 mandir_default='${prefix}/share/man'
2646 shlibdir_default="$libdir_default"
2647
2648 # toolchain
2649 ar_default="ar"
2650 cc_default="gcc"
2651 host_cc_default="gcc"
2652 x86asmexe_default="nasm"
2653 ln_s="ln -s -f"
2654 nm_default="nm -g"
2655 pkg_config_default=pkg-config
2656 ranlib="ranlib"
2657 strip="strip"
2658 version_script='--version-script'
2659 objformat="elf32"
2660
2661 # machine
2662 arch_default=$(uname -m)
2663 cpu="generic"
2664 intrinsics="none"
2665
2666 # OS
2667 target_os_default=$(tolower $(uname -s))
2668 host_os=$target_os_default
2669
2670 # configurable options
2671 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2672
2673 enable asm
2674 enable debug
2675 enable doc
2676 enable faan faandct faanidct
2677 enable optimizations
2678 enable safe_bitstream_reader
2679 enable static
2680 enable swscale_alpha
2681 enable valgrind_backtrace
2682
2683 # By default, enable only those hwaccels that have no external dependencies.
2684 enable d3d11va dxva2 vda vdpau
2685
2686 # internal components are enabled by default
2687 enable $EXTRALIBS_LIST
2688
2689 # Avoid external, non-system, libraries getting enabled by dependency resolution
2690 disable $EXTERNAL_LIBRARY_LIST
2691
2692 # build settings
2693 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2694 LIBPREF="lib"
2695 LIBSUF=".a"
2696 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2697 SLIBPREF="lib"
2698 SLIBSUF=".so"
2699 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2700 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2701 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2702 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2703 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2704 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2705 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2706
2707 asflags_filter=echo
2708 cflags_filter=echo
2709 ldflags_filter=echo
2710
2711 AS_C='-c'
2712 AS_O='-o $@'
2713 CC_C='-c'
2714 CC_E='-E -o $@'
2715 CC_O='-o $@'
2716 OBJCC_C='-c'
2717 OBJCC_E='-E -o $@'
2718 OBJCC_O='-o $@'
2719 X86ASM_O='-o $@'
2720 LD_O='-o $@'
2721 LD_LIB='-l%'
2722 LD_PATH='-L'
2723 HOSTCC_C='-c'
2724 HOSTCC_E='-E -o $@'
2725 HOSTCC_O='-o $@'
2726 HOSTLD_O='-o $@'
2727
2728 host_extralibs='-lm'
2729 host_cflags_filter=echo
2730 host_ldflags_filter=echo
2731
2732 target_path='$(CURDIR)'
2733
2734 # since the object filename is not given with the -MM flag, the compiler
2735 # is only able to print the basename, and we must add the path ourselves
2736 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2737 DEPFLAGS='-MM'
2738
2739 mkdir -p avbuild
2740
2741 # find source path
2742 if test -f configure; then
2743     source_path=.
2744 else
2745     source_path=$(cd $(dirname "$0"); pwd)
2746     echo "$source_path" | grep -q '[[:blank:]]' &&
2747         die "Out of tree builds are impossible with whitespace in source path."
2748     test -e "$source_path/config.h" &&
2749         die "Out of tree builds are impossible with config.h in source dir."
2750 fi
2751
2752 for v in "$@"; do
2753     r=${v#*=}
2754     l=${v%"$r"}
2755     r=$(sh_quote "$r")
2756     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2757 done
2758
2759 find_things(){
2760     thing=$1
2761     pattern=$2
2762     file=$source_path/$3
2763     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2764 }
2765
2766 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2767 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2768 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2769 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2770 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2771 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2772 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2773
2774 find_things_extern(){
2775     thing=$1
2776     pattern=$2
2777     file=$source_path/$3
2778     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2779 }
2780
2781 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2782 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
2783 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2784
2785 AVCODEC_COMPONENTS_LIST="
2786     $BSF_LIST
2787     $DECODER_LIST
2788     $ENCODER_LIST
2789     $HWACCEL_LIST
2790     $PARSER_LIST
2791 "
2792
2793 AVDEVICE_COMPONENTS_LIST="
2794     $INDEV_LIST
2795 "
2796
2797 AVFILTER_COMPONENTS_LIST="
2798     $FILTER_LIST
2799 "
2800
2801 AVFORMAT_COMPONENTS_LIST="
2802     $DEMUXER_LIST
2803     $MUXER_LIST
2804     $PROTOCOL_LIST
2805 "
2806
2807 ALL_COMPONENTS="
2808     $AVCODEC_COMPONENTS_LIST
2809     $AVDEVICE_COMPONENTS_LIST
2810     $AVFILTER_COMPONENTS_LIST
2811     $AVFORMAT_COMPONENTS_LIST
2812 "
2813
2814 for n in $COMPONENT_LIST; do
2815     v=$(toupper ${n%s})_LIST
2816     eval enable \$$v
2817     eval ${n}_if_any="\$$v"
2818 done
2819
2820 enable $ARCH_EXT_LIST
2821
2822 die_unknown(){
2823     echo "Unknown option \"$1\"."
2824     echo "See $0 --help for available options."
2825     exit 1
2826 }
2827
2828 print_3_columns() {
2829     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2830 }
2831
2832 show_list() {
2833     suffix=_$1
2834     shift
2835     echo $* | sed s/$suffix//g | print_3_columns
2836     exit 0
2837 }
2838
2839 for opt do
2840     optval="${opt#*=}"
2841     case "$opt" in
2842         --extra-ldflags=*)
2843             add_ldflags $optval
2844         ;;
2845         --extra-ldexeflags=*)
2846             add_ldexeflags $optval
2847         ;;
2848         --extra-ldsoflags=*)
2849             add_ldsoflags $optval
2850         ;;
2851         --extra-libs=*)
2852             add_extralibs $optval
2853         ;;
2854         --disable-devices)
2855             disable $INDEV_LIST
2856         ;;
2857         --enable-debug=*)
2858             debuglevel="$optval"
2859         ;;
2860         --disable-programs)
2861             disable $PROGRAM_LIST
2862         ;;
2863         --disable-everything)
2864             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2865         ;;
2866         --disable-all)
2867             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2868             disable $LIBRARY_LIST $PROGRAM_LIST doc
2869         ;;
2870         --enable-*=*|--disable-*=*)
2871             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2872             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2873             eval list=\$$(toupper $thing)_LIST
2874             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2875             $action $(filter "$name" $list)
2876         ;;
2877         --enable-yasm|--disable-yasm)
2878             warn "The ${opt} option is only provided for compatibility and will be\n"\
2879                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
2880             test $opt = --enable-yasm && x86asm=yes || x86asm=no
2881         ;;
2882         --enable-?*|--disable-?*)
2883             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2884             if is_in $option $COMPONENT_LIST; then
2885                 test $action = disable && action=unset
2886                 eval $action \$$(toupper ${option%s})_LIST
2887             elif is_in $option $CMDLINE_SELECT; then
2888                 $action $option
2889             else
2890                 die_unknown $opt
2891             fi
2892         ;;
2893         --list-*)
2894             NAME="${opt#--list-}"
2895             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2896             NAME=${NAME%s}
2897             eval show_list $NAME \$$(toupper $NAME)_LIST
2898         ;;
2899         --help|-h) show_help
2900         ;;
2901         --quiet|-q) quiet=yes
2902         ;;
2903         *)
2904             optname="${opt%%=*}"
2905             optname="${optname#--}"
2906             optname=$(echo "$optname" | sed 's/-/_/g')
2907             if is_in $optname $CMDLINE_SET; then
2908                 eval $optname='$optval'
2909             elif is_in $optname $CMDLINE_APPEND; then
2910                 append $optname "$optval"
2911             else
2912                 die_unknown $opt
2913             fi
2914         ;;
2915     esac
2916 done
2917
2918 for e in $env; do
2919     eval "export $e"
2920 done
2921
2922 disabled logging && logfile=/dev/null
2923
2924 # command line configuration sanity checks
2925
2926 # we need to build at least one lib type
2927 if ! enabled_any static shared; then
2928     cat <<EOF
2929 At least one library type must be built.
2930 Specify --enable-static to build the static libraries or --enable-shared to
2931 build the shared libraries as well. To only build the shared libraries specify
2932 --disable-static in addition to --enable-shared.
2933 EOF
2934     exit 1
2935 fi
2936
2937 # Die early if licensing-related configure options are incompatible.
2938 die_license_disabled() {
2939     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2940 }
2941
2942 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2943 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2944 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2945
2946 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2947
2948 if enabled nonfree; then
2949     license="nonfree and unredistributable"
2950 elif enabled gplv3; then
2951     license="GPL version 3 or later"
2952 elif enabled lgplv3; then
2953     license="LGPL version 3 or later"
2954 elif enabled gpl; then
2955     license="GPL version 2 or later"
2956 else
2957     license="LGPL version 2.1 or later"
2958 fi
2959
2960 enabled_all gnutls openssl &&
2961     die "GnuTLS and OpenSSL must not be enabled at the same time."
2962
2963 # Disable all the library-specific components if the library itself
2964 # is disabled, see AVCODEC_LIST and following _LIST variables.
2965
2966 disable_components(){
2967     disabled ${1} && disable $(
2968         eval components="\$$(toupper ${1})_COMPONENTS"
2969         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2970     )
2971 }
2972
2973 map 'disable_components $v' $LIBRARY_LIST
2974
2975 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2976 set >> $logfile
2977
2978 case "$toolchain" in
2979     *-asan)
2980         cc_default="${toolchain%-asan}"
2981         add_cflags  -fsanitize=address
2982         add_ldflags -fsanitize=address
2983     ;;
2984     *-msan)
2985         cc_default="${toolchain%-msan}"
2986         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2987         add_ldflags -fsanitize=memory
2988     ;;
2989     *-tsan)
2990         cc_default="${toolchain%-tsan}"
2991         add_cflags  -fsanitize=thread -fPIE
2992         add_ldflags -fsanitize=thread -pie
2993         case "$toolchain" in
2994             gcc-tsan)
2995                 add_cflags  -fPIC
2996                 add_ldflags -fPIC
2997                 ;;
2998         esac
2999     ;;
3000     *-usan)
3001         cc_default="${toolchain%-usan}"
3002         add_cflags  -fsanitize=undefined
3003         add_ldflags -fsanitize=undefined
3004         case "$toolchain" in
3005             clang-usan)
3006                 add_cflags -O1
3007                 ;;
3008         esac
3009     ;;
3010     valgrind-*)
3011         target_exec_default="valgrind"
3012         case "$toolchain" in
3013             valgrind-massif)
3014                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
3015                 ;;
3016             valgrind-memcheck)
3017                 target_exec_args="--track-origins=yes --leak-check=full"
3018                 ;;
3019         esac
3020     ;;
3021     msvc)
3022         # Check whether the current MSVC version needs the C99 converter.
3023         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3024         # support enough of C99 to build libav. Default to the new
3025         # behaviour if the regexp was unable to match anything, since this
3026         # successfully parses the version number of existing supported
3027         # versions that require the converter (MSVC 2010 and 2012).
3028         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3029         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3030             cc_default="cl"
3031         else
3032             cc_default="c99wrap cl"
3033         fi
3034         ld_default="$source_path/compat/windows/mslink"
3035         nm_default="dumpbin -symbols"
3036         ar_default="lib"
3037         case "$arch" in
3038         aarch64|arm64)
3039             as_default="armasm64"
3040             ;;
3041         arm*)
3042             as_default="armasm"
3043             ;;
3044         esac
3045         target_os_default="win32"
3046         # Use a relative path for TMPDIR. This makes sure all the
3047         # ffconf temp files are written with a relative path, avoiding
3048         # issues with msys/win32 path conversion for MSVC parameters
3049         # such as -Fo<file> or -out:<file>.
3050         TMPDIR=.
3051     ;;
3052     icl)
3053         cc_default="icl"
3054         ld_default="xilink"
3055         nm_default="dumpbin -symbols"
3056         ar_default="xilib"
3057         target_os_default="win32"
3058         TMPDIR=.
3059     ;;
3060     gcov)
3061         add_cflags  -fprofile-arcs -ftest-coverage
3062         add_ldflags -fprofile-arcs -ftest-coverage
3063     ;;
3064     llvm-cov)
3065         add_cflags -fprofile-arcs -ftest-coverage
3066         add_ldflags --coverage
3067     ;;
3068     hardened)
3069         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3070         add_cflags   -fno-strict-overflow -fstack-protector-all
3071         add_ldflags  -Wl,-z,relro -Wl,-z,now
3072     ;;
3073     ?*)
3074         die "Unknown toolchain $toolchain"
3075     ;;
3076 esac
3077
3078 if test -n "$cross_prefix"; then
3079     test -n "$arch" && test -n "$target_os" ||
3080         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3081     enable cross_compile
3082 fi
3083
3084 ar_default="${cross_prefix}${ar_default}"
3085 cc_default="${cross_prefix}${cc_default}"
3086 objcc_default="${cross_prefix}${objcc_default}"
3087 x86asmexe_default="${cross_prefix}${x86asmexe_default}"
3088 nm_default="${cross_prefix}${nm_default}"
3089 pkg_config_default="${cross_prefix}${pkg_config_default}"
3090 ranlib="${cross_prefix}${ranlib}"
3091 strip="${cross_prefix}${strip}"
3092
3093 sysinclude_default="${sysroot}/usr/include"
3094
3095 set_default arch cc pkg_config sysinclude target_exec target_os x86asmexe
3096 enabled cross_compile || host_cc_default=$cc
3097 set_default host_cc
3098
3099 if ! $pkg_config --version >/dev/null 2>&1; then
3100     warn "$pkg_config not found, library detection may fail."
3101     pkg_config=false
3102 fi
3103
3104 exesuf() {
3105     case $1 in
3106         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3107     esac
3108 }
3109
3110 EXESUF=$(exesuf $target_os)
3111 HOSTEXESUF=$(exesuf $host_os)
3112
3113 # set temporary file name
3114 : ${TMPDIR:=$TEMPDIR}
3115 : ${TMPDIR:=$TMP}
3116 : ${TMPDIR:=/tmp}
3117
3118 if ! test_cmd mktemp -u XXXXXX; then
3119     # simple replacement for missing mktemp
3120     # NOT SAFE FOR GENERAL USE
3121     mktemp(){
3122         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3123         echo "$tmpname"
3124         mkdir "$tmpname"
3125     }
3126 fi
3127
3128 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
3129     die "Unable to create temporary directory in $TMPDIR."
3130
3131 tmpfile(){
3132     tmp="${AVTMPDIR}/test"$2
3133     (set -C; exec > $tmp) 2> /dev/null ||
3134         die "Unable to create temporary file in $AVTMPDIR."
3135     eval $1=$tmp
3136 }
3137
3138 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3139 trap 'exit 2' INT
3140
3141 tmpfile TMPASM .asm
3142 tmpfile TMPC   .c
3143 tmpfile TMPE   $EXESUF
3144 tmpfile TMPH   .h
3145 tmpfile TMPO   .o
3146 tmpfile TMPS   .S
3147 tmpfile TMPSH  .sh
3148 tmpfile TMPV   .ver
3149
3150 unset -f mktemp
3151
3152 chmod +x $TMPE
3153
3154 # make sure we can execute files in $TMPDIR
3155 cat > $TMPSH 2>> $logfile <<EOF
3156 #! /bin/sh
3157 EOF
3158 chmod +x $TMPSH >> $logfile 2>&1
3159 if ! $TMPSH >> $logfile 2>&1; then
3160     cat <<EOF
3161 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3162 variable to another directory and make sure that it is not mounted noexec.
3163 EOF
3164     die "Sanity test failed."
3165 fi
3166
3167 armasm_flags(){
3168     for flag; do
3169         case $flag in
3170             # Filter out MSVC cl.exe options from cflags that shouldn't
3171             # be passed to gas-preprocessor
3172             -M[TD]*)                                            ;;
3173             *)                  echo $flag                      ;;
3174         esac
3175    done
3176 }
3177
3178 cparser_flags(){
3179     for flag; do
3180         case $flag in
3181             -Wno-switch)             echo -Wno-switch-enum ;;
3182             -Wno-format-zero-length) ;;
3183             -Wdisabled-optimization) ;;
3184             -Wno-pointer-sign)       echo -Wno-other ;;
3185             *)                       echo $flag ;;
3186         esac
3187     done
3188 }
3189
3190 msvc_common_flags(){
3191     for flag; do
3192         case $flag in
3193             # In addition to specifying certain flags under the compiler
3194             # specific filters, they must be specified here as well or else the
3195             # generic catch all at the bottom will print the original flag.
3196             -Wall)                ;;
3197             -Wextra)              ;;
3198             -std=c99)             ;;
3199             # Common flags
3200             -fomit-frame-pointer) ;;
3201             -g)                   echo -Z7 ;;
3202             -fno-math-errno)      ;;
3203             -fno-common)          ;;
3204             -fno-signed-zeros)    ;;
3205             -fPIC)                ;;
3206             -mthumb)              ;;
3207             -march=*)             ;;
3208             -lz)                  echo zlib.lib ;;
3209             -lx264)               echo libx264.lib ;;
3210             -l*)                  echo ${flag#-l}.lib ;;
3211             -L*)                  echo -libpath:${flag#-L} ;;
3212             *)                    echo $flag ;;
3213         esac
3214     done
3215 }
3216
3217 msvc_flags(){
3218     msvc_common_flags "$@"
3219     for flag; do
3220         case $flag in
3221             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3222                                        -wd4554 ;;
3223             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3224                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3225                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3226                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3227         esac
3228     done
3229 }
3230
3231 icl_flags(){
3232     msvc_common_flags "$@"
3233     for flag; do
3234         case $flag in
3235             # Despite what Intel's documentation says -Wall, which is supported
3236             # on Windows, does enable remarks so disable them here.
3237             -Wall)                echo $flag -Qdiag-disable:remark ;;
3238             -std=c99)             echo -Qstd=c99 ;;
3239         esac
3240     done
3241 }
3242
3243 suncc_flags(){
3244     for flag; do
3245         case $flag in
3246             -march=*|-mcpu=*)
3247                 case "${flag#*=}" in
3248                     native)                   echo -xtarget=native       ;;
3249                     v9|niagara)               echo -xarch=sparc          ;;
3250                     ultrasparc)               echo -xarch=sparcvis       ;;
3251                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3252                     i586|pentium)             echo -xchip=pentium        ;;
3253                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3254                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3255                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3256                     pentium4*)          echo -xtarget=pentium4           ;;
3257                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3258                     *-sse3)             echo -xarch=sse3                 ;;
3259                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3260                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3261                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3262                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3263                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3264                     k8|opteron|athlon64|athlon-fx)
3265                                                echo -xarch=sse2a         ;;
3266                     athlon*)                   echo -xarch=pentium_proa  ;;
3267                 esac
3268                 ;;
3269             -std=c99)             echo -xc99              ;;
3270             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3271             -fPIC)                echo -KPIC -xcode=pic32 ;;
3272             -W*,*)                echo $flag              ;;
3273             -f*-*|-W*|-mimpure-text)                      ;;
3274             -shared)              echo -G                 ;;
3275             *)                    echo $flag              ;;
3276         esac
3277     done
3278 }
3279
3280 probe_cc(){
3281     pfx=$1
3282     _cc=$2
3283
3284     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3285     unset _ld_o _ldflags _ld_lib _ld_path
3286     unset _depflags _DEPCMD _DEPFLAGS
3287     _flags_filter=echo
3288
3289     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3290         _type=llvm_gcc
3291         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3292         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3293         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3294         _cflags_speed='-O3'
3295         _cflags_size='-Os'
3296     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3297         _type=gcc
3298         gcc_version=$($_cc --version | head -n1)
3299         gcc_basever=$($_cc -dumpversion)
3300         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3301         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3302         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3303         if ! $_cc -dumpversion | grep -q '^2\.'; then
3304             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3305         fi
3306         _cflags_speed='-O3'
3307         _cflags_size='-Os'
3308     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3309         _type=icc
3310         _ident=$($_cc --version | head -n1)
3311         _depflags='-MMD'
3312         _cflags_speed='-O3'
3313         _cflags_size='-Os'
3314         _cflags_noopt='-O1'
3315     elif $_cc -v 2>&1 | grep -q xlc; then
3316         _type=xlc
3317         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3318         _cflags_speed='-O5'
3319         _cflags_size='-O5 -qcompact'
3320     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3321         test -d "$sysroot" || die "No valid sysroot specified."
3322         _type=armcc
3323         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3324         armcc_conf="$PWD/armcc.conf"
3325         $_cc --arm_linux_configure                 \
3326              --arm_linux_config_file="$armcc_conf" \
3327              --configure_sysroot="$sysroot"        \
3328              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3329              die "Error creating armcc configuration file."
3330         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3331         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3332         as_default="${cross_prefix}gcc"
3333         _depflags='-MMD'
3334         _cflags_speed='-O3'
3335         _cflags_size='-Os'
3336     elif $_cc -v 2>&1 | grep -q clang; then
3337         _type=clang
3338         _ident=$($_cc --version 2>/dev/null | head -n1)
3339         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3340         _cflags_speed='-O3'
3341         _cflags_size='-Os'
3342     elif $_cc -V 2>&1 | grep -q Sun; then
3343         _type=suncc
3344         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3345         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3346         _DEPFLAGS='-xM1 -xc99'
3347         _ldflags='-std=c99'
3348         _cflags_speed='-O5'
3349         _cflags_size='-O5 -xspace'
3350         _flags_filter=suncc_flags
3351     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3352         _type=pathscale
3353         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3354         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3355         _cflags_speed='-O2'
3356         _cflags_size='-Os'
3357         _flags_filter='filter_out -Wdisabled-optimization'
3358     elif $_cc -v 2>&1 | grep -q Open64; then
3359         _type=open64
3360         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3361         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3362         _cflags_speed='-O2'
3363         _cflags_size='-Os'
3364         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3365     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3366         _type=armasm
3367         _ident=$($_cc | head -n1)
3368         # 4509: "This form of conditional instruction is deprecated"
3369         _flags="-nologo -ignore 4509"
3370         _flags_filter=armasm_flags
3371     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3372         _type=msvc
3373         _ident=$($_cc 2>&1 | head -n1)
3374         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3375         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3376         _cflags_speed="-O2"
3377         _cflags_size="-O1"
3378         _cflags_noopt="-O1"
3379         if $_cc -nologo- 2>&1 | grep -q Linker; then
3380             _ld_o='-out:$@'
3381         else
3382             _ld_o='-Fe$@'
3383         fi
3384         _cc_o='-Fo$@'
3385         _cc_e='-P -Fi$@'
3386         _flags_filter=msvc_flags
3387         _ld_lib='lib%.a'
3388         _ld_path='-libpath:'
3389         _flags='-nologo'
3390     elif $_cc 2>&1 | grep -q Intel; then
3391         _type=icl
3392         _ident=$($_cc 2>&1 | head -n1)
3393         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3394         # Not only is O3 broken on 13.x+ but it is slower on all previous
3395         # versions (tested) as well.
3396         _cflags_speed="-O2"
3397         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3398         if $_cc 2>&1 | grep -q Linker; then
3399             _ld_o='-out:$@'
3400         else
3401             _ld_o='-Fe$@'
3402         fi
3403         _cc_o='-Fo$@'
3404         _cc_e='-P'
3405         _flags_filter=icl_flags
3406         _ld_lib='lib%.a'
3407         _ld_path='-libpath:'
3408         # -Qdiag-error to make icl error when seeing certain unknown arguments
3409         _flags='-nologo -Qdiag-error:4044,10157'
3410         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3411         # with MSVC which enables it by default.
3412         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3413     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3414         # lld can emulate multiple different linkers; in ms link.exe mode,
3415         # the -? parameter gives the help output which contains an identifyable
3416         # string, while it gives an error in other modes.
3417         _type=lld-link
3418         # The link.exe mode doesn't have a switch for getting the version,
3419         # but we can force it back to gnu mode and get the version from there.
3420         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3421         _ld_o='-out:$@'
3422         _flags_filter=msvc_flags
3423         _ld_lib='lib%.a'
3424         _ld_path='-libpath:'
3425     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3426         _type=cparser
3427         _ident=$($_cc --version | head -n1)
3428         _depflags='-MMD'
3429         _cflags_speed='-O4'
3430         _cflags_size='-O2'
3431         _flags_filter=cparser_flags
3432     fi
3433
3434     eval ${pfx}_type=\$_type
3435     eval ${pfx}_ident=\$_ident
3436 }
3437
3438 set_ccvars(){
3439     eval ${1}_C=\${_cc_c-\${${1}_C}}
3440     eval ${1}_E=\${_cc_e-\${${1}_E}}
3441     eval ${1}_O=\${_cc_o-\${${1}_O}}
3442
3443     if [ -n "$_depflags" ]; then
3444         eval ${1}_DEPFLAGS=\$_depflags
3445     else
3446         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3447         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3448         eval DEP${1}FLAGS=\$_flags
3449     fi
3450 }
3451
3452 probe_cc cc "$cc"
3453 cflags_filter=$_flags_filter
3454 cflags_speed=$_cflags_speed
3455 cflags_size=$_cflags_size
3456 cflags_noopt=$_cflags_noopt
3457 add_cflags $_flags $_cflags
3458 cc_ldflags=$_ldflags
3459 set_ccvars CC
3460
3461 probe_cc hostcc "$host_cc"
3462 host_cflags_filter=$_flags_filter
3463 host_cflags_speed=$_cflags_speed
3464 add_host_cflags  $_flags $_cflags
3465 set_ccvars HOSTCC
3466
3467 test -n "$cc_type" && enable $cc_type ||
3468     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3469
3470 : ${as_default:=$cc}
3471 : ${objcc_default:=$cc}
3472 : ${dep_cc_default:=$cc}
3473 : ${ld_default:=$cc}
3474 : ${host_ld_default:=$host_cc}
3475 set_default ar as objcc dep_cc ld host_ld
3476
3477 probe_cc as "$as"
3478 asflags_filter=$_flags_filter
3479 add_asflags $_flags $_cflags
3480 set_ccvars AS
3481
3482 probe_cc objcc "$objcc"
3483 objcflags_filter=$_flags_filter
3484 add_objcflags $_flags $_cflags
3485 set_ccvars OBJC
3486
3487 probe_cc ld "$ld"
3488 ldflags_filter=$_flags_filter
3489 add_ldflags $_flags $_ldflags
3490 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3491 LD_O=${_ld_o-$LD_O}
3492 LD_LIB=${_ld_lib-$LD_LIB}
3493 LD_PATH=${_ld_path-$LD_PATH}
3494
3495 probe_cc hostld "$host_ld"
3496 host_ldflags_filter=$_flags_filter
3497 add_host_ldflags $_flags $_ldflags
3498 HOSTLD_O=${_ld_o-$HOSTLD_O}
3499
3500 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3501     probe_cc depcc "$dep_cc"
3502     CCDEP=${_DEPCMD:-$DEPCMD}
3503     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3504     DEPCCFLAGS=$_flags
3505 fi
3506
3507 if $ar 2>&1 | grep -q Microsoft; then
3508     arflags="-nologo"
3509     ar_o='-out:$@'
3510 else
3511     arflags="rc"
3512     ar_o='$@'
3513 fi
3514
3515 add_cflags $extra_cflags
3516 add_objcflags $extra_objcflags
3517 add_asflags $extra_cflags
3518
3519 if test -n "$sysroot"; then
3520     case "$cc_type" in
3521         gcc|llvm_gcc|clang)
3522             add_cppflags --sysroot="$sysroot"
3523             add_ldflags --sysroot="$sysroot"
3524         ;;
3525     esac
3526 fi
3527
3528 if test "$cpu" = host; then
3529     enabled cross_compile &&
3530         die "--cpu=host makes no sense when cross-compiling."
3531
3532     case "$cc_type" in
3533         gcc|llvm_gcc)
3534             check_native(){
3535                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3536                 sed -n "/cc1.*$1=/{
3537                             s/.*$1=\\([^ ]*\\).*/\\1/
3538                             p
3539                             q
3540                         }" $TMPE
3541             }
3542             cpu=$(check_native -march || check_native -mcpu)
3543         ;;
3544     esac
3545
3546     test "${cpu:-host}" = host &&
3547         die "--cpu=host not supported with compiler $cc"
3548 fi
3549
3550 # Deal with common $arch aliases
3551 case "$arch" in
3552     aarch64|arm64)
3553         arch="aarch64"
3554     ;;
3555     arm*)
3556         arch="arm"
3557     ;;
3558     mips*|IP*)
3559         case "$arch" in
3560         *el)
3561             add_cppflags -EL
3562             add_ldflags -EL
3563         ;;
3564         *eb)
3565             add_cppflags -EB
3566             add_ldflags -EB
3567         ;;
3568         esac
3569         arch="mips"
3570     ;;
3571     parisc*|hppa*)
3572         arch="parisc"
3573     ;;
3574     "Power Macintosh"|ppc*|powerpc*)
3575         arch="ppc"
3576     ;;
3577     s390|s390x)
3578         arch="s390"
3579     ;;
3580     sh4|sh)
3581         arch="sh4"
3582     ;;
3583     sun4u|sparc*)
3584         arch="sparc"
3585     ;;
3586     tilegx|tile-gx)
3587         arch="tilegx"
3588     ;;
3589     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3590         arch="x86"
3591     ;;
3592 esac
3593
3594 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3595 enable $arch
3596
3597 # Add processor-specific flags
3598 if enabled aarch64; then
3599
3600     case $cpu in
3601         armv*)
3602             cpuflags="-march=$cpu"
3603         ;;
3604         *)
3605             cpuflags="-mcpu=$cpu"
3606         ;;
3607     esac
3608
3609 elif enabled alpha; then
3610
3611     cpuflags="-mcpu=$cpu"
3612
3613 elif enabled arm; then
3614
3615     check_arm_arch() {
3616         test_cpp_condition stddef.h \
3617             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3618             $cpuflags
3619     }
3620
3621     probe_arm_arch() {
3622         if   check_arm_arch 4;        then echo armv4
3623         elif check_arm_arch 4T;       then echo armv4t
3624         elif check_arm_arch 5;        then echo armv5
3625         elif check_arm_arch 5E;       then echo armv5e
3626         elif check_arm_arch 5T;       then echo armv5t
3627         elif check_arm_arch 5TE;      then echo armv5te
3628         elif check_arm_arch 5TEJ;     then echo armv5te
3629         elif check_arm_arch 6;        then echo armv6
3630         elif check_arm_arch 6J;       then echo armv6j
3631         elif check_arm_arch 6K;       then echo armv6k
3632         elif check_arm_arch 6Z;       then echo armv6z
3633         elif check_arm_arch 6ZK;      then echo armv6zk
3634         elif check_arm_arch 6T2;      then echo armv6t2
3635         elif check_arm_arch 7;        then echo armv7
3636         elif check_arm_arch 7A  7_A;  then echo armv7-a
3637         elif check_arm_arch 7S;       then echo armv7-a
3638         elif check_arm_arch 7R  7_R;  then echo armv7-r
3639         elif check_arm_arch 7M  7_M;  then echo armv7-m
3640         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3641         elif check_arm_arch 8A  8_A;  then echo armv8-a
3642         fi
3643     }
3644
3645     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3646
3647     case $cpu in
3648         armv*)
3649             cpuflags="-march=$cpu"
3650             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3651         ;;
3652         *)
3653             cpuflags="-mcpu=$cpu"
3654             case $cpu in
3655                 cortex-a*)                               subarch=armv7a  ;;
3656                 cortex-r*)                               subarch=armv7r  ;;
3657                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3658                 arm11*)                                  subarch=armv6   ;;
3659                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3660                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3661                 *)                             subarch=$(probe_arm_arch) ;;
3662             esac
3663         ;;
3664     esac
3665
3666     case "$subarch" in
3667         armv5t*)    enable fast_clz                ;;
3668         armv[6-8]*) enable fast_clz fast_unaligned ;;
3669     esac
3670
3671 elif enabled avr32; then
3672
3673     case $cpu in
3674         ap7[02]0[0-2])
3675             subarch="avr32_ap"
3676             cpuflags="-mpart=$cpu"
3677         ;;
3678         ap)
3679             subarch="avr32_ap"
3680             cpuflags="-march=$cpu"
3681         ;;
3682         uc3[ab]*)
3683             subarch="avr32_uc"
3684             cpuflags="-mcpu=$cpu"
3685         ;;
3686         uc)
3687             subarch="avr32_uc"
3688             cpuflags="-march=$cpu"
3689         ;;
3690     esac
3691
3692 elif enabled bfin; then
3693
3694     cpuflags="-mcpu=$cpu"
3695
3696 elif enabled mips; then
3697
3698     cpuflags="-march=$cpu"
3699
3700 elif enabled ppc; then
3701
3702     disable ldbrx
3703
3704     case $(tolower $cpu) in
3705         601|ppc601|powerpc601)
3706             cpuflags="-mcpu=601"
3707             disable altivec
3708         ;;
3709         603*|ppc603*|powerpc603*)
3710             cpuflags="-mcpu=603"
3711             disable altivec
3712         ;;
3713         604*|ppc604*|powerpc604*)
3714             cpuflags="-mcpu=604"
3715             disable altivec
3716         ;;
3717         g3|75*|ppc75*|powerpc75*)
3718             cpuflags="-mcpu=750"
3719             disable altivec
3720         ;;
3721         g4|745*|ppc745*|powerpc745*)
3722             cpuflags="-mcpu=7450"
3723             disable vsx
3724         ;;
3725         74*|ppc74*|powerpc74*)
3726             cpuflags="-mcpu=7400"
3727             disable vsx
3728         ;;
3729         g5|970|ppc970|powerpc970)
3730             cpuflags="-mcpu=970"
3731             disable vsx
3732         ;;
3733         power[3-6]*)
3734             cpuflags="-mcpu=$cpu"
3735             disable vsx
3736         ;;
3737         power[7-8]*)
3738             cpuflags="-mcpu=$cpu"
3739             enable ldbrx
3740         ;;
3741         cell)
3742             cpuflags="-mcpu=cell"
3743             enable ldbrx
3744             disable vsx
3745         ;;
3746         e500mc)
3747             cpuflags="-mcpu=e500mc"
3748             disable altivec
3749         ;;
3750         e500v2)
3751             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3752             disable altivec
3753             disable dcbzl
3754         ;;
3755         e500)
3756             cpuflags="-mcpu=8540 -mhard-float"
3757             disable altivec
3758             disable dcbzl
3759         ;;
3760     esac
3761
3762 elif enabled sparc; then
3763
3764     case $cpu in
3765         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3766             cpuflags="-mcpu=$cpu"
3767         ;;
3768         ultrasparc*|niagara[234])
3769             cpuflags="-mcpu=$cpu"
3770         ;;
3771     esac
3772
3773 elif enabled x86; then
3774
3775     case $cpu in
3776         i[345]86|pentium)
3777             cpuflags="-march=$cpu"
3778             disable i686
3779             disable mmx
3780         ;;
3781         # targets that do NOT support nopl and conditional mov (cmov)
3782         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3783             cpuflags="-march=$cpu"
3784             disable i686
3785         ;;
3786         # targets that do support nopl and conditional mov (cmov)
3787         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3788             cpuflags="-march=$cpu"
3789             enable i686
3790             enable fast_cmov
3791         ;;
3792         # targets that do support conditional mov but on which it's slow
3793         pentium4|pentium4m|prescott|nocona)
3794             cpuflags="-march=$cpu"
3795             enable i686
3796             disable fast_cmov
3797         ;;
3798     esac
3799
3800 fi
3801
3802 if [ "$cpu" != generic ]; then
3803     add_cflags  $cpuflags
3804     add_asflags $cpuflags
3805     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3806 fi
3807
3808 # compiler sanity check
3809 test_exec <<EOF
3810 int main(void){ return 0; }
3811 EOF
3812 if test "$?" != 0; then
3813     echo "$cc is unable to create an executable file."
3814     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3815         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3816         echo "Only do this if you know what cross compiling means."
3817     fi
3818     die "C compiler test failed."
3819 fi
3820
3821 add_cppflags -D_ISOC99_SOURCE
3822
3823 # some compilers silently accept -std=c11, so we also need to check that the
3824 # version macro is defined properly
3825 test_cpp_condition stdlib.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
3826     add_cflags -std=c11 ||
3827     check_cflags -std=c99
3828
3829 check_cppflags -D_FILE_OFFSET_BITS=64
3830 check_cppflags -D_LARGEFILE_SOURCE
3831
3832 add_host_cppflags -D_ISOC99_SOURCE
3833 check_host_cflags -std=c99
3834 check_host_cflags -Wall
3835 check_host_cflags $host_cflags_speed
3836
3837 check_64bit(){
3838     arch32=$1
3839     arch64=$2
3840     expr=${3:-'sizeof(void *) > 4'}
3841     test_code cc "" "int test[2*($expr) - 1]" &&
3842         subarch=$arch64 || subarch=$arch32
3843     enable $subarch
3844 }
3845
3846 case "$arch" in
3847     aarch64|alpha|ia64)
3848         enabled shared && enable_weak pic
3849     ;;
3850     mips)
3851         check_64bit mips mips64 '_MIPS_SIM > 1'
3852         enabled shared && enable_weak pic
3853     ;;
3854     parisc)
3855         check_64bit parisc parisc64
3856         enabled shared && enable_weak pic
3857     ;;
3858     ppc)
3859         check_64bit ppc ppc64
3860         enabled shared && enable_weak pic
3861     ;;
3862     s390)
3863         check_64bit s390 s390x
3864         enabled shared && enable_weak pic
3865     ;;
3866     sparc)
3867         check_64bit sparc sparc64
3868         enabled shared && enable_weak pic
3869     ;;
3870     x86)
3871         check_64bit x86_32 x86_64
3872         if enabled x86_64; then
3873             enabled shared && enable_weak pic
3874             objformat=elf64
3875         fi
3876     ;;
3877 esac
3878
3879 # OS specific
3880 case $target_os in
3881     aix)
3882         SHFLAGS=-shared
3883         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3884         enabled shared && add_ldflags -Wl,-brtl
3885         arflags='-Xany -r -c'
3886         ;;
3887     android)
3888         disable symver
3889         enable section_data_rel_ro
3890         SLIB_INSTALL_NAME='$(SLIBNAME)'
3891         SLIB_INSTALL_LINKS=
3892         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3893         ;;
3894     haiku)
3895         prefix_default="/boot/common"
3896         network_extralibs="-lnetwork"
3897         host_extralibs=
3898         ;;
3899     sunos)
3900         SHFLAGS='-shared -Wl,-h,$$(@F)'
3901         enabled x86 && append SHFLAGS -mimpure-text
3902         network_extralibs="-lsocket -lnsl"
3903         # When using suncc to build, the Solaris linker will mark
3904         # an executable with each instruction set encountered by
3905         # the Solaris assembler.  As our libraries contain their own
3906         # guards for processor-specific code, instead suppress
3907         # generation of the HWCAPS ELF section on Solaris x86 only.
3908         enabled_all suncc x86 &&
3909             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3910             add_ldflags -Wl,-M,mapfile
3911         nm_default='nm -P -g'
3912         version_script='-M'
3913         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3914         ;;
3915     netbsd)
3916         disable symver
3917         oss_indev_extralibs="-lossaudio"
3918         ;;
3919     openbsd|bitrig)
3920         disable symver
3921         SHFLAGS='-shared'
3922         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3923         SLIB_INSTALL_LINKS=
3924         oss_indev_extralibs="-lossaudio"
3925         ;;
3926     dragonfly)
3927         disable symver
3928         ;;
3929     freebsd)
3930         ;;
3931     bsd/os)
3932         add_extralibs -lpoll -lgnugetopt
3933         ;;
3934     darwin)
3935         enabled ppc && add_asflags -force_cpusubtype_ALL
3936         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3937         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3938         add_ldflags -Wl,-dynamic,-search_paths_first
3939         check_cflags -Werror=partial-availability
3940         SLIBSUF=".dylib"
3941         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3942         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3943         enabled x86_64 && objformat="macho64" || objformat="macho32"
3944         enabled_any pic shared ||
3945             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3946         check_header dispatch/dispatch.h &&
3947             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3948         if test -n "$sysroot"; then
3949             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
3950             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
3951         fi
3952         ;;
3953     msys*)
3954         die "Native MSYS builds are discouraged, please use the MINGW environment."
3955         ;;
3956     mingw32*|mingw64*)
3957         target_os=mingw32
3958         LIBTARGET=i386
3959         if enabled x86_64; then
3960             LIBTARGET="i386:x86-64"
3961         elif enabled arm; then
3962             LIBTARGET="arm"
3963         elif enabled aarch64; then
3964             LIBTARGET="arm64"
3965         fi
3966         if enabled shared; then
3967             # Cannot build both shared and static libs when using dllimport.
3968             disable static
3969         fi
3970         check_ldflags -Wl,--nxcompat
3971         check_ldflags -Wl,--dynamicbase
3972         shlibdir_default="$bindir_default"
3973         SLIBPREF=""
3974         SLIBSUF=".dll"
3975         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3976         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3977         SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3978         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3979         SLIB_INSTALL_LINKS=
3980         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3981         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3982         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3983         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-auto-image-base $$(@:$(SLIBSUF)=.def)'
3984         enabled x86_64 && objformat="win64" || objformat="win32"
3985         dlltool="${cross_prefix}dlltool"
3986         ranlib=:
3987         enable dos_paths
3988         ;;
3989     win32|win64)
3990         disable symver
3991         if enabled shared; then
3992             # Link to the import library instead of the normal static library
3993             # for shared libs.
3994             LD_LIB='%.lib'
3995             # Cannot build both shared and static libs with MSVC or icl.
3996             disable static
3997         fi
3998         shlibdir_default="$bindir_default"
3999         SLIBPREF=""
4000         SLIBSUF=".dll"
4001         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4002         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4003         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4004         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4005         SLIB_INSTALL_LINKS=
4006         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4007         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4008         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4009         enabled x86_64 && objformat="win64" || objformat="win32"
4010         ranlib=:
4011         enable dos_paths
4012         ;;
4013     cygwin*)
4014         target_os=cygwin
4015         shlibdir_default="$bindir_default"
4016         SLIBPREF="cyg"
4017         SLIBSUF=".dll"
4018         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4019         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4020         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4021         SLIB_INSTALL_LINKS=
4022         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
4023         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
4024         enabled x86_64 && objformat="win64" || objformat="win32"
4025         enable dos_paths
4026         ;;
4027     *-dos|freedos|opendos)
4028         network_extralibs="-lsocket"
4029         objformat="coff"
4030         enable dos_paths
4031         add_cppflags -U__STRICT_ANSI__
4032         ;;
4033     linux)
4034         enable section_data_rel_ro
4035         ;;
4036     irix*)
4037         target_os=irix
4038         ranlib="echo ignoring ranlib"
4039         ;;
4040     os/2*)
4041         ln_s="cp -f"
4042         objformat="aout"
4043         add_cppflags -D_GNU_SOURCE
4044         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4045         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4046         LIBSUF="_s.a"
4047         SLIBPREF=""
4048         SLIBSUF=".dll"
4049         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4050         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4051         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4052             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4053             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4054             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4055             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4056         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4057             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4058         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4059         enable dos_paths
4060         ;;
4061     gnu/kfreebsd)
4062         add_cppflags -D_BSD_SOURCE
4063         ;;
4064     gnu)
4065         ;;
4066     qnx)
4067         add_cppflags -D_QNX_SOURCE
4068         network_extralibs="-lsocket"
4069         ;;
4070     symbian)
4071         SLIBSUF=".dll"
4072         enable dos_paths
4073         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4074         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4075         add_ldflags -Wl,--target1-abs,--no-undefined \
4076                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4077                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4078         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4079                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4080                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4081         ;;
4082     minix)
4083         ;;
4084     none)
4085         ;;
4086     *)
4087         die "Unknown OS '$target_os'."
4088         ;;
4089 esac
4090
4091 # determine libc flavour
4092
4093 probe_libc(){
4094     pfx=$1
4095     pfx_no_=${pfx%_}
4096     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4097     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4098         eval ${pfx}libc_type=uclibc
4099         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4100     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4101         eval ${pfx}libc_type=glibc
4102         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4103     # MinGW headers can be installed on Cygwin, so check for newlib first.
4104     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4105         eval ${pfx}libc_type=newlib
4106         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4107         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
4108             add_${pfx}cppflags -D_WIN32_WINNT=0x0600