avcodec: libdav1d AV1 decoder wrapper.
[libav.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [avbuild/config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix_default]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89   --enable-rpath           use rpath when linking programs (USE WITH CARE)
90
91 Licensing options:
92   --enable-gpl             allow use of GPL code, the resulting libs
93                            and binaries will be under GPL [no]
94   --enable-version3        upgrade (L)GPL to version 3 [no]
95   --enable-nonfree         allow use of nonfree code, the resulting libs
96                            and binaries will be unredistributable [no]
97
98 Configuration options:
99   --disable-static         do not build static libraries [no]
100   --enable-shared          build shared libraries [no]
101   --enable-small           optimize for size instead of speed
102   --enable-runtime-cpudetect detect CPU capabilities at runtime (bigger binary)
103   --enable-gray            enable full grayscale support (slower color)
104   --disable-swscale-alpha  disable alpha channel support in swscale
105   --disable-all            disable building components, libraries and programs
106
107 Program options:
108   --disable-programs       do not build command line programs
109   --disable-avconv         disable avconv build
110   --disable-avplay         disable avplay build
111   --disable-avprobe        disable avprobe build
112
113 Component options:
114   --disable-doc            do not build documentation
115   --disable-pod2man        do not build manual pages
116   --disable-texi2html      do not build HTML documentation
117   --disable-avdevice       disable libavdevice build
118   --disable-avcodec        disable libavcodec build
119   --disable-avformat       disable libavformat build
120   --disable-avutil         disable libavutil build
121   --disable-swscale        disable libswscale build
122   --disable-avfilter       disable video filter support [no]
123   --disable-avresample     disable libavresample build [no]
124   --disable-pthreads       disable pthreads [auto]
125   --disable-w32threads     disable Win32 threads [auto]
126   --disable-network        disable network support [no]
127   --disable-dct            disable DCT code
128   --disable-error-resilience disable error resilience code
129   --disable-lsp            disable LSP code
130   --disable-lzo            disable LZO decoder code
131   --disable-mdct           disable MDCT code
132   --disable-rdft           disable RDFT code
133   --disable-fft            disable FFT code
134   --disable-faan           disable floating point AAN (I)DCT code
135
136 Individual component options:
137   --disable-everything     disable all components listed below
138   --disable-encoder=NAME   disable encoder NAME
139   --enable-encoder=NAME    enable encoder NAME
140   --disable-encoders       disable all encoders
141   --disable-decoder=NAME   disable decoder NAME
142   --enable-decoder=NAME    enable decoder NAME
143   --disable-decoders       disable all decoders
144   --disable-hwaccel=NAME   disable hwaccel NAME
145   --enable-hwaccel=NAME    enable hwaccel NAME
146   --disable-hwaccels       disable all hwaccels
147   --disable-muxer=NAME     disable muxer NAME
148   --enable-muxer=NAME      enable muxer NAME
149   --disable-muxers         disable all muxers
150   --disable-demuxer=NAME   disable demuxer NAME
151   --enable-demuxer=NAME    enable demuxer NAME
152   --disable-demuxers       disable all demuxers
153   --enable-parser=NAME     enable parser NAME
154   --disable-parser=NAME    disable parser NAME
155   --disable-parsers        disable all parsers
156   --enable-bsf=NAME        enable bitstream filter NAME
157   --disable-bsf=NAME       disable bitstream filter NAME
158   --disable-bsfs           disable all bitstream filters
159   --enable-protocol=NAME   enable protocol NAME
160   --disable-protocol=NAME  disable protocol NAME
161   --disable-protocols      disable all protocols
162   --enable-indev=NAME      enable input device NAME
163   --disable-indev=NAME     disable input device NAME
164   --disable-indevs         disable input devices
165   --disable-devices        disable all devices
166   --enable-filter=NAME     enable filter NAME
167   --disable-filter=NAME    disable filter NAME
168   --disable-filters        disable all filters
169
170 External library support:
171
172   Using any of the following switches will allow Libav to link to the
173   corresponding external library. All the components depending on that library
174   will become enabled, if all their other dependencies are met and they are not
175   explicitly disabled. E.g. --enable-libwavpack will enable linking to
176   libwavpack and allow the libwavpack encoder to be built, unless it is
177   specifically disabled with --disable-encoder=libwavpack.
178
179   Note that only the system libraries are auto-detected. All the other external
180   libraries must be explicitly enabled.
181
182   Also note that the following help text describes the purpose of the libraries
183   themselves, not all their features will necessarily be usable by Libav.
184
185   --enable-avisynth          video frameserver
186   --enable-avxsynth          Linux version of AviSynth
187   --enable-bzlib             bzip2 compression [autodetect]
188   --enable-frei0r            video filtering plugins
189   --enable-gnutls            crypto
190   --enable-libaom            AV1 video encoding/decoding
191   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
192   --enable-libcdio           audio CD input
193   --enable-libdav1d          AV1 video decoding
194   --enable-libdc1394         IEEE 1394/Firewire camera input
195   --enable-libdcadec         DCA audio decoding
196   --enable-libfaac           AAC audio encoding
197   --enable-libfdk-aac        AAC audio encoding/decoding
198   --enable-libfontconfig     font configuration and management
199   --enable-libfreetype       font rendering
200   --enable-libgsm            GSM audio encoding/decoding
201   --enable-libhdcd           HDCD decoding filter
202   --enable-libilbc           ILBC audio encoding/decoding
203   --enable-libjack           JACK audio sound server
204   --enable-libkvazaar        HEVC video encoding
205   --enable-libmp3lame        MP3 audio encoding
206   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
207   --enable-libopencore-amrwb AMR-WB audio decoding
208   --enable-libopencv         computer vision
209   --enable-libopenh264       H.264 video encoding/decoding
210   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
211   --enable-libopus           Opus audio encoding/decoding
212   --enable-libpulse          Pulseaudio sound server
213   --enable-librtmp           RTMP streaming
214   --enable-libschroedinger   Dirac video encoding/decoding
215   --enable-libsnappy         snappy compression
216   --enable-libspeex          Speex audio encoding/decoding
217   --enable-libsrt            Haivision SRT protocol
218   --enable-libtheora         Theora video encoding/decoding
219   --enable-libtwolame        MP2 audio encoding
220   --enable-libvo-aacenc      AAC audio encoding
221   --enable-libvo-amrwbenc    AMR-WB audio encoding
222   --enable-libvorbis         Vorbis audio encoding/decoding
223   --enable-libvpx            VP* video encoding/decoding
224   --enable-libwavpack        Wavpack audio encoding/decoding
225   --enable-libwebp           WebP image encoding/decoding
226   --enable-libx264           H.264 video encoding
227   --enable-libx265           HEVC video encoding
228   --enable-libxavs           Chinese AVS video encoding
229   --enable-libxcb            X window system protocol communication
230   --enable-libxcb-shm        X11 shm communication [auto]
231   --enable-libxcb-xfixes     X11 mouse rendering [auto]
232   --enable-libxvid           MPEG-4 ASP video encoding
233   --enable-mbedtls           crypto
234   --enable-openssl           crypto
235   --enable-zlib              compression [autodetect]
236
237   The following libraries provide various hardware acceleration features:
238   --enable-amf     AMF video encoding code [auto]
239   --enable-cuda    Nvidia CUDA (dynamically linked)
240   --enable-cuvid   Nvidia CUVID video decode acceleration
241   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
242   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
243   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
244   --enable-libnpp  Nvidia CUDA processing
245   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
246   --enable-nvenc   Nvidia video encoding
247   --enable-omx     OpenMAX IL
248   --enable-omx-rpi OpenMAX IL for Raspberry Pi
249   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
250   --enable-vda     Apple Video Decode Acceleration [auto]
251   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
252
253 Toolchain options:
254   --arch=ARCH              select architecture [$arch]
255   --cpu=CPU                select the minimum required CPU (affects
256                            instruction selection, may crash on older CPUs)
257   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
258   --enable-cross-compile   assume a cross-compiler is used
259   --sysroot=PATH           root of cross-build tree
260   --sysinclude=PATH        location of cross-build system headers
261   --target-os=OS           compiler targets OS [$target_os]
262   --target-exec=CMD        command to run executables on target
263   --target-path=DIR        path to view of build directory on target
264   --target-samples=DIR     path to samples directory on target
265   --toolchain=NAME         set tool defaults according to NAME
266                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
267                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
268                            valgrind-massif, valgrind-memcheck,
269                            msvc, icl, gcov, llvm-cov, hardened)
270   --nm=NM                  use nm tool
271   --ar=AR                  use archive tool AR [$ar_default]
272   --as=AS                  use assembler AS [$as_default]
273   --cc=CC                  use C compiler CC [$cc_default]
274   --objcc=OCC              use ObjC compiler OCC [$cc_default]
275   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
276   --ld=LD                  use linker LD
277   --x86asmexe=X86ASM       use x86 assembler X86ASM
278   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
279   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
280   --host-cc=HOSTCC         use host C compiler HOSTCC
281   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
282   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
283   --host-ld=HOSTLD         use host linker HOSTLD
284   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
285   --host-libs=HLIBS        use libs HLIBS when linking for host
286   --host-os=OS             compiler host OS [$target_os]
287   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
288   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
289   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
290   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
291   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
292   --extra-libs=ELIBS       add ELIBS [$ELIBS]
293   --extra-version=STRING   version string suffix []
294   --optflags=OPTFLAGS      override optimization-related compiler flags
295   --enable-pic             build position-independent code
296   --enable-thumb           compile for Thumb instruction set
297   --enable-lto             use link-time optimization
298   --env="ENV=override"     override the environment variables
299
300 Advanced options (experts only):
301   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
302   --custom-allocator=NAME  use a supported custom allocator
303   --disable-symver         disable symbol versioning
304   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
305   --disable-safe-bitstream-reader
306                            disable buffer boundary checking in bitreaders
307                            (faster, but may crash)
308   --enable-sram            allow use of on-chip SRAM
309
310 Optimization options (experts only):
311   --disable-asm            disable all assembly optimizations
312   --disable-altivec        disable AltiVec optimizations
313   --disable-vsx            disable VSX optimizations
314   --disable-power8         disable POWER8 optimizations
315   --disable-amd3dnow       disable 3DNow! optimizations
316   --disable-amd3dnowext    disable 3DNow! extended optimizations
317   --disable-mmx            disable MMX optimizations
318   --disable-mmxext         disable MMXEXT optimizations
319   --disable-sse            disable SSE optimizations
320   --disable-sse2           disable SSE2 optimizations
321   --disable-sse3           disable SSE3 optimizations
322   --disable-ssse3          disable SSSE3 optimizations
323   --disable-sse4           disable SSE4 optimizations
324   --disable-sse42          disable SSE4.2 optimizations
325   --disable-avx            disable AVX optimizations
326   --disable-xop            disable XOP optimizations
327   --disable-fma3           disable FMA3 optimizations
328   --disable-fma4           disable FMA4 optimizations
329   --disable-avx2           disable AVX2 optimizations
330   --disable-armv5te        disable armv5te optimizations
331   --disable-armv6          disable armv6 optimizations
332   --disable-armv6t2        disable armv6t2 optimizations
333   --disable-vfp            disable VFP optimizations
334   --disable-neon           disable NEON optimizations
335   --disable-inline-asm     disable use of inline assembly
336   --disable-x86asm         disable use of standalone x86 assembly
337
338 Developer options (useful when working on Libav itself):
339   --disable-debug          disable debugging symbols
340   --enable-debug=LEVEL     set the debug level [$debuglevel]
341   --disable-optimizations  disable compiler optimizations
342   --enable-extra-warnings  enable more compiler warnings
343   --samples=PATH           location of test samples for FATE, if not set use
344                            \$LIBAV_SAMPLES at make invocation time.
345   --enable-neon-clobber-test check NEON registers for clobbering (should be
346                            used only for debugging purposes)
347   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
348                            should be used only for debugging purposes)
349   --disable-valgrind-backtrace do not print a backtrace under Valgrind
350                            (only applies to --disable-optimizations builds)
351   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
352                            in the name) of tests whose result is ignored
353
354 NOTE: Object files are built at the place where configure is launched.
355 EOF
356   exit 0
357 }
358
359 log(){
360     echo "$@" >> $logfile
361 }
362
363 log_file(){
364     log BEGIN $1
365     i=1
366     while read line; do
367         printf '%5s   %s\n' "${i}" "${line}"
368         i=$(($i+1))
369     done < $1 >> $logfile
370     log END $1
371 }
372
373 echolog(){
374     log "$@"
375     echo "$@"
376 }
377
378 warn(){
379     log "WARNING: $*"
380     WARNINGS="${WARNINGS}WARNING: $*\n"
381 }
382
383 die(){
384     echolog "$@"
385     cat <<EOF
386
387 If you think configure made a mistake, make sure you are using the latest
388 version from Git.  If the latest version fails, report the problem to the
389 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
390 EOF
391     if disabled logging; then
392         cat <<EOF
393 Rerun configure with logging enabled (do not use --disable-logging), and
394 include the log this produces with your report.
395 EOF
396     else
397         cat <<EOF
398 Include the log file "$logfile" produced by configure as this will help
399 solving the problem.
400 EOF
401     fi
402     exit 1
403 }
404
405 # Avoid locale weirdness, besides we really just want to translate ASCII.
406 toupper(){
407     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
408 }
409
410 tolower(){
411     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
412 }
413
414 c_escape(){
415     echo "$*" | sed 's/["\\]/\\\0/g'
416 }
417
418 sh_quote(){
419     v=$(echo "$1" | sed "s/'/'\\\\''/g")
420     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
421     echo "$v"
422 }
423
424 cleanws(){
425     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
426 }
427
428 filter(){
429     pat=$1
430     shift
431     for v; do
432         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
433     done
434 }
435
436 filter_out(){
437     pat=$1
438     shift
439     for v; do
440         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
441     done
442 }
443
444 map(){
445     m=$1
446     shift
447     for v; do eval $m; done
448 }
449
450 add_suffix(){
451     suffix=$1
452     shift
453     for v; do echo ${v}${suffix}; done
454 }
455
456 set_all(){
457     value=$1
458     shift
459     for var in $*; do
460         eval $var=$value
461     done
462 }
463
464 set_weak(){
465     value=$1
466     shift
467     for var; do
468         eval : \${$var:=$value}
469     done
470 }
471
472 sanitize_var_name(){
473     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
474 }
475
476 set_sanitized(){
477     var=$1
478     shift
479     eval $(sanitize_var_name "$var")='$*'
480 }
481
482 get_sanitized(){
483     eval echo \$$(sanitize_var_name "$1")
484 }
485
486 pushvar(){
487     for pvar in $*; do
488         eval level=\${${pvar}_level:=0}
489         eval ${pvar}_${level}="\$$pvar"
490         eval ${pvar}_level=$(($level+1))
491     done
492 }
493
494 popvar(){
495     for pvar in $*; do
496         eval level=\${${pvar}_level:-0}
497         test $level = 0 && continue
498         eval level=$(($level-1))
499         eval $pvar="\${${pvar}_${level}}"
500         eval ${pvar}_level=$level
501         eval unset ${pvar}_${level}
502     done
503 }
504
505 enable(){
506     set_all yes $*
507 }
508
509 disable(){
510     set_all no $*
511 }
512
513 enable_weak(){
514     set_weak yes $*
515 }
516
517 disable_weak(){
518     set_weak no $*
519 }
520
521 enable_sanitized(){
522     for var; do
523         enable $(sanitize_var_name $var)
524     done
525 }
526
527 disable_sanitized(){
528     for var; do
529         disable $(sanitize_var_name $var)
530     done
531 }
532
533 do_enable_deep(){
534     for var; do
535         enabled $var && continue
536         eval sel="\$${var}_select"
537         eval sgs="\$${var}_suggest"
538         pushvar var sgs
539         enable_deep $sel
540         popvar sgs
541         enable_deep_weak $sgs
542         popvar var
543     done
544 }
545
546 enable_deep(){
547     do_enable_deep $*
548     enable $*
549 }
550
551 enable_deep_weak(){
552     for var; do
553         disabled $var && continue
554         pushvar var
555         do_enable_deep $var
556         popvar var
557         enable_weak $var
558     done
559 }
560
561 enabled(){
562     test "${1#!}" = "$1" && op="=" || op="!="
563     eval test "x\$${1#!}" $op "xyes"
564 }
565
566 disabled(){
567     test "${1#!}" = "$1" && op="=" || op="!="
568     eval test "x\$${1#!}" $op "xno"
569 }
570
571 enabled_all(){
572     for opt; do
573         enabled $opt || return 1
574     done
575 }
576
577 disabled_all(){
578     for opt; do
579         disabled $opt || return 1
580     done
581 }
582
583 enabled_any(){
584     for opt; do
585         enabled $opt && return 0
586     done
587 }
588
589 disabled_any(){
590     for opt; do
591         disabled $opt && return 0
592     done
593     return 1
594 }
595
596 set_default(){
597     for opt; do
598         eval : \${$opt:=\$${opt}_default}
599     done
600 }
601
602 is_in(){
603     value=$1
604     shift
605     for var in $*; do
606         [ $var = $value ] && return 0
607     done
608     return 1
609 }
610
611 check_deps(){
612     for cfg; do
613         enabled ${cfg}_checking && die "Circular dependency for $cfg."
614         disabled ${cfg}_checking && continue
615         enable ${cfg}_checking
616
617         eval dep_all="\$${cfg}_deps"
618         eval dep_any="\$${cfg}_deps_any"
619         eval dep_con="\$${cfg}_conflict"
620         eval dep_sel="\$${cfg}_select"
621         eval dep_sgs="\$${cfg}_suggest"
622         eval dep_ifa="\$${cfg}_if"
623         eval dep_ifn="\$${cfg}_if_any"
624
625         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
626         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
627         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
628
629         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
630         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
631         enabled_all  $dep_all || disable $cfg
632         enabled_any  $dep_any || disable $cfg
633         disabled_all $dep_con || disable $cfg
634         disabled_any $dep_sel && disable $cfg
635
636         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
637
638         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
639             # filter out library deps, these do not belong in extralibs
640             is_in $dep $LIBRARY_LIST && continue
641             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
642         done
643
644         disable ${cfg}_checking
645     done
646 }
647
648 print_config(){
649     pfx=$1
650     files=$2
651     shift 2
652     map 'eval echo "$v \${$v:-no}"' "$@" |
653     awk "BEGIN { split(\"$files\", files) }
654         {
655             c = \"$pfx\" toupper(\$1);
656             v = \$2;
657             sub(/yes/, 1, v);
658             sub(/no/,  0, v);
659             for (f in files) {
660                 file = files[f];
661                 if (file ~ /\\.h\$/) {
662                     printf(\"#define %s %d\\n\", c, v) >>file;
663                 } else if (file ~ /\\.asm\$/) {
664                     printf(\"%%define %s %d\\n\", c, v) >>file;
665                 } else if (file ~ /\\.mak\$/) {
666                     n = -v ? \"\" : \"!\";
667                     printf(\"%s%s=yes\\n\", n, c) >>file;
668                 }
669             }
670         }"
671 }
672
673 print_enabled(){
674     suf=$1
675     shift
676     for v; do
677         enabled $v && printf "%s\n" ${v%$suf}
678     done
679 }
680
681 append(){
682     var=$1
683     shift
684     eval "$var=\"\$$var $*\""
685 }
686
687 prepend(){
688     var=$1
689     shift
690     eval "$var=\"$* \$$var\""
691 }
692
693 unique(){
694     var=$1
695     uniq_list=""
696     for tok in $(eval echo \$$var); do
697         uniq_list="$(filter_out $tok $uniq_list) $tok"
698     done
699     eval "$var=\"${uniq_list}\""
700 }
701
702 resolve(){
703     var=$1
704     tmpvar=
705     for entry in $(eval echo \$$var); do
706         tmpvar="$tmpvar $(eval echo \$${entry})"
707     done
708     eval "$var=\"${tmpvar}\""
709 }
710
711 add_cppflags(){
712     append CPPFLAGS "$@"
713 }
714
715 add_cflags(){
716     append CFLAGS $($cflags_filter "$@")
717 }
718
719 add_cflags_headers(){
720     append CFLAGS_HEADERS $($cflags_filter "$@")
721 }
722
723 add_objcflags(){
724     append OBJCFLAGS $($objcflags_filter "$@")
725 }
726
727 add_asflags(){
728     append ASFLAGS $($asflags_filter "$@")
729 }
730
731 add_ldflags(){
732     append LDFLAGS $($ldflags_filter "$@")
733 }
734
735 add_ldexeflags(){
736     append LDEXEFLAGS $($ldflags_filter "$@")
737 }
738
739 add_ldsoflags(){
740     append LDSOFLAGS $($ldflags_filter "$@")
741 }
742
743 add_extralibs(){
744     prepend extralibs $($ldflags_filter "$@")
745 }
746
747 add_stripflags(){
748     append STRIPFLAGS "$@"
749 }
750
751 add_host_cppflags(){
752     append host_cppflags "$@"
753 }
754
755 add_host_cflags(){
756     append host_cflags $($host_cflags_filter "$@")
757 }
758
759 add_host_ldflags(){
760     append host_ldflags $($host_ldflags_filter "$@")
761 }
762
763 add_compat(){
764     append compat_objs $1
765     shift
766     map 'add_cppflags -D$v' "$@"
767 }
768
769 test_cmd(){
770     log "$@"
771     "$@" >> $logfile 2>&1
772 }
773
774 cc_e(){
775     eval printf '%s\\n' $CC_E
776 }
777
778 cc_o(){
779     eval printf '%s\\n' $CC_O
780 }
781
782 as_o(){
783     eval printf '%s\\n' $AS_O
784 }
785
786 x86asm_o(){
787     eval printf '%s\\n' $X86ASM_O
788 }
789
790 ld_o(){
791     eval printf '%s\\n' $LD_O
792 }
793
794 hostcc_e(){
795     eval printf '%s\\n' $HOSTCC_E
796 }
797
798 hostcc_o(){
799     eval printf '%s\\n' $HOSTCC_O
800 }
801
802 test_cc(){
803     log test_cc "$@"
804     cat > $TMPC
805     log_file $TMPC
806     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
807 }
808
809 test_objcc(){
810     log test_objcc "$@"
811     cat > $TMPC
812     log_file $TMPC
813     test_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
814 }
815
816 test_cpp(){
817     log test_cpp "$@"
818     cat > $TMPC
819     log_file $TMPC
820     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
821 }
822
823 test_as(){
824     log test_as "$@"
825     cat > $TMPS
826     log_file $TMPS
827     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
828 }
829
830 test_x86asm(){
831     log test_x86asm "$@"
832     echo "$1" > $TMPASM
833     log_file $TMPASM
834     shift
835     test_cmd $x86asmexe $X86ASMFLAGS "$@" $(x86asm_o $TMPO) $TMPASM
836 }
837
838 check_cmd(){
839     log check_cmd "$@"
840     cmd=$1
841     disabled $cmd && return
842     disable $cmd
843     test_cmd $@ && enable $cmd
844 }
845
846 check_as(){
847     log check_as "$@"
848     name=$1
849     code=$2
850     shift 2
851     disable $name
852     test_as $@ <<EOF && enable $name
853 $code
854 EOF
855 }
856
857 check_inline_asm(){
858     log check_inline_asm "$@"
859     name="$1"
860     code="$2"
861     shift 2
862     disable $name
863     test_cc "$@" <<EOF && enable $name
864 void foo(void){ __asm__ volatile($code); }
865 EOF
866 }
867
868 check_insn(){
869     log check_insn "$@"
870     check_inline_asm ${1}_inline "\"$2\""
871     check_as ${1}_external "$2"
872 }
873
874 check_x86asm(){
875     log check_x86asm "$@"
876     name=$1
877     shift
878     disable $name
879     test_x86asm "$@" && enable $name
880 }
881
882 test_ld(){
883     log test_ld "$@"
884     flags=$(filter_out '-l*' "$@")
885     libs=$(filter '-l*' "$@")
886     test_cc $($cflags_filter $flags) || return
887     flags=$($ldflags_filter $flags)
888     libs=$($ldflags_filter $libs)
889     test_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
890 }
891
892 check_ld(){
893     log check_ld "$@"
894     name=$1
895     shift
896     disable $name
897     test_ld $@ && enable $name
898 }
899
900 print_include(){
901     hdr=$1
902     test "${hdr%.h}" = "${hdr}" &&
903         echo "#include $hdr"    ||
904         echo "#include <$hdr>"
905 }
906
907 test_code(){
908     log test_code "$@"
909     check=$1
910     headers=$2
911     code=$3
912     shift 3
913     {
914         for hdr in $headers; do
915             print_include $hdr
916         done
917         echo "int main(void) { $code; return 0; }"
918     } | test_$check "$@"
919 }
920
921 check_cppflags(){
922     log check_cppflags "$@"
923     test_cpp "$@" <<EOF && add_cppflags "$@"
924 #include <stdlib.h>;
925 EOF
926 }
927
928 test_cflags(){
929     log test_cflags "$@"
930     set -- $($cflags_filter "$@")
931     test_cc "$@" <<EOF
932 int x;
933 EOF
934 }
935
936 check_cflags(){
937     log check_cflags "$@"
938     test_cflags "$@" && add_cflags "$@"
939 }
940
941 test_objcflags(){
942     log test_objcflags "$@"
943     set -- $($objcflags_filter "$@")
944     test_objcc "$@" <<EOF
945 int x;
946 EOF
947 }
948
949 check_objcflags(){
950     log check_objcflags "$@"
951     test_objcflags "$@" && add_objcflags "$@"
952 }
953
954 test_ldflags(){
955     log test_ldflags "$@"
956     set -- $($ldflags_filter "$@")
957     test_ld "$@" <<EOF
958 int main(void){ return 0; }
959 EOF
960 }
961
962 check_ldflags(){
963     log check_ldflags "$@"
964     test_ldflags "$@" && add_ldflags "$@"
965 }
966
967 test_stripflags(){
968     log test_stripflags "$@"
969     # call test_cc to get a fresh TMPO
970     test_cc <<EOF
971 int main(void) { return 0; }
972 EOF
973     test_cmd $strip $STRIPFLAGS "$@" $TMPO
974 }
975
976 check_stripflags(){
977     log check_stripflags "$@"
978     test_stripflags "$@" && add_stripflags "$@"
979 }
980
981 check_headers(){
982     log check_headers "$@"
983     headers=$1
984     shift
985     disable_sanitized $headers
986     {
987         for hdr in $headers; do
988             print_include $hdr
989         done
990         echo "int x;"
991     } | test_cpp "$@" && enable_sanitized $headers
992 }
993
994 check_func(){
995     log check_func "$@"
996     func=$1
997     shift
998     disable $func
999     test_ld "$@" <<EOF && enable $func
1000 extern int $func();
1001 int main(void){ $func(); }
1002 EOF
1003 }
1004
1005 check_mathfunc(){
1006     log check_mathfunc "$@"
1007     func=$1
1008     narg=$2
1009     shift 2
1010     test $narg = 2 && args="f, g" || args="f"
1011     disable $func
1012     test_ld "$@" <<EOF && enable $func
1013 #include <math.h>
1014 float foo(float f, float g) { return $func($args); }
1015 int main(void){ return 0; }
1016 EOF
1017 }
1018
1019 check_func_headers(){
1020     log check_func_headers "$@"
1021     headers=$1
1022     funcs=$2
1023     shift 2
1024     {
1025         for hdr in $headers; do
1026             print_include $hdr
1027         done
1028         for func in $funcs; do
1029             echo "long check_$func(void) { return (long) $func; }"
1030         done
1031         echo "int main(void) { return 0; }"
1032     } | test_ld "$@" && enable $funcs && enable_sanitized $headers
1033 }
1034
1035 test_cpp_condition(){
1036     log test_cpp_condition "$@"
1037     header=$1
1038     condition=$2
1039     shift 2
1040     test_cpp "$@" <<EOF
1041 #include <$header>
1042 #if !($condition)
1043 #error "unsatisfied condition: $condition"
1044 #endif
1045 EOF
1046 }
1047
1048 check_cpp_condition(){
1049     log check_cpp_condition "$@"
1050     name=$1
1051     shift 1
1052     disable $name
1053     test_cpp_condition "$@" && enable $name
1054 }
1055
1056 check_lib(){
1057     log check_lib "$@"
1058     name="$1"
1059     headers="$2"
1060     funcs="$3"
1061     shift 3
1062     disable $name
1063     check_func_headers "$headers" "$funcs" "$@" &&
1064         enable $name && eval ${name}_extralibs="\$@"
1065 }
1066
1067 test_pkg_config(){
1068     log test_pkg_config "$@"
1069     name="$1"
1070     pkg_version="$2"
1071     pkg="${2%% *}"
1072     headers="$3"
1073     funcs="$4"
1074     shift 4
1075     disable $name
1076     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1077     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1078     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1079     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1080         enable $name &&
1081         set_sanitized "${name}_cflags"    $pkg_cflags &&
1082         set_sanitized "${name}_extralibs" $pkg_libs
1083 }
1084
1085 check_pkg_config(){
1086     log check_pkg_config "$@"
1087     name="$1"
1088     test_pkg_config "$@" &&
1089         eval add_cflags \$${name}_cflags
1090 }
1091
1092 test_exec(){
1093     log test_exec "$@"
1094     test_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1095 }
1096
1097 check_exec_crash(){
1098     log check_exec_crash "$@"
1099     code=$(cat)
1100
1101     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1102     # are safe but may not be available everywhere.  Thus we use
1103     # raise(SIGTERM) instead.  The check is run in a subshell so we
1104     # can redirect the "Terminated" message from the shell.  SIGBUS
1105     # is not defined by standard C so it is used conditionally.
1106
1107     (test_exec "$@") >> $logfile 2>&1 <<EOF
1108 #include <signal.h>
1109 static void sighandler(int sig){
1110     raise(SIGTERM);
1111 }
1112 int foo(void){
1113     $code
1114 }
1115 int (*func_ptr)(void) = foo;
1116 int main(void){
1117     signal(SIGILL, sighandler);
1118     signal(SIGFPE, sighandler);
1119     signal(SIGSEGV, sighandler);
1120 #ifdef SIGBUS
1121     signal(SIGBUS, sighandler);
1122 #endif
1123     return func_ptr();
1124 }
1125 EOF
1126 }
1127
1128 check_type(){
1129     log check_type "$@"
1130     headers=$1
1131     type=$2
1132     shift 2
1133     disable_sanitized "$type"
1134     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1135 }
1136
1137 check_struct(){
1138     log check_struct "$@"
1139     headers=$1
1140     struct=$2
1141     member=$3
1142     shift 3
1143     disable_sanitized "${struct}_${member}"
1144     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1145         enable_sanitized "${struct}_${member}"
1146 }
1147
1148 check_builtin(){
1149     log check_builtin "$@"
1150     name=$1
1151     shift
1152     disable "$name"
1153     test_code ld "$@" && enable "$name"
1154 }
1155
1156 check_compile_assert(){
1157     log check_compile_assert "$@"
1158     name=$1
1159     headers=$2
1160     condition=$3
1161     shift 3
1162     disable "$name"
1163     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1164 }
1165
1166 check_cc(){
1167     log check_cc "$@"
1168     name=$1
1169     shift
1170     disable "$name"
1171     test_code cc "$@" && enable "$name"
1172 }
1173
1174 require(){
1175     log require "$@"
1176     name_version="$1"
1177     name="${1%% *}"
1178     shift
1179     check_lib $name "$@" || die "ERROR: $name_version not found"
1180 }
1181
1182 require_cc(){
1183     log require_cc "$@"
1184     name="$1"
1185     check_cc "$@" || die "ERROR: $name failed"
1186 }
1187
1188 require_headers(){
1189     log require_headers "$@"
1190     headers="$1"
1191     check_headers "$@" || die "ERROR: $headers not found"
1192 }
1193
1194 require_cpp_condition(){
1195     log require_cpp_condition "$@"
1196     condition="$2"
1197     check_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1198 }
1199
1200 require_pkg_config(){
1201     log require_pkg_config "$@"
1202     pkg_version="$2"
1203     check_pkg_config "$@" || die "ERROR: $pkg_version not found"
1204 }
1205
1206 test_host_cc(){
1207     log test_host_cc "$@"
1208     cat > $TMPC
1209     log_file $TMPC
1210     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1211 }
1212
1213 test_host_cpp(){
1214     log test_host_cpp "$@"
1215     cat > $TMPC
1216     log_file $TMPC
1217     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1218 }
1219
1220 check_host_cppflags(){
1221     log check_host_cppflags "$@"
1222     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1223 #include <stdlib.h>;
1224 EOF
1225 }
1226
1227 check_host_cflags(){
1228     log check_host_cflags "$@"
1229     set -- $($host_cflags_filter "$@")
1230     test_host_cc "$@" <<EOF && append host_cflags "$@"
1231 int x;
1232 EOF
1233 }
1234
1235 test_host_cpp_condition(){
1236     log test_host_cpp_condition "$@"
1237     header=$1
1238     condition=$2
1239     shift 2
1240     test_host_cpp "$@" <<EOF
1241 #include <$header>
1242 #if !($condition)
1243 #error "unsatisfied condition: $condition"
1244 #endif
1245 EOF
1246 }
1247
1248 check_host_cpp_condition(){
1249     log check_host_cpp_condition "$@"
1250     name=$1
1251     shift 1
1252     disable $name
1253     test_host_cpp_condition "$@" && enable $name
1254 }
1255
1256 cp_if_changed(){
1257     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1258     mkdir -p "$(dirname $2)"
1259     cp -f "$1" "$2"
1260 }
1261
1262 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1263 # system-dependent things.
1264
1265 AVCODEC_COMPONENTS="
1266     bsfs
1267     decoders
1268     encoders
1269     hwaccels
1270     parsers
1271 "
1272
1273 AVDEVICE_COMPONENTS="
1274     indevs
1275 "
1276 AVFILTER_COMPONENTS="
1277     filters
1278 "
1279 AVFORMAT_COMPONENTS="
1280     demuxers
1281     muxers
1282     protocols
1283 "
1284
1285 COMPONENT_LIST="
1286     $AVCODEC_COMPONENTS
1287     $AVDEVICE_COMPONENTS
1288     $AVFILTER_COMPONENTS
1289     $AVFORMAT_COMPONENTS
1290 "
1291
1292 EXAMPLE_LIST="
1293     decode_audio_example
1294     decode_video_example
1295     encode_audio_example
1296     encode_video_example
1297     filter_audio_example
1298     metadata_example
1299     output_example
1300     qsvdec_example
1301     transcode_aac_example
1302 "
1303
1304 # catchall list of things that require external libs to link
1305 EXTRALIBS_LIST="
1306     cpu_init
1307     cws2fws
1308 "
1309
1310 HWACCEL_LIBRARY_NONFREE_LIST="
1311     cuda
1312     cuvid
1313     libnpp
1314 "
1315 HWACCEL_LIBRARY_LIST="
1316     $HWACCEL_LIBRARY_NONFREE_LIST
1317     amf
1318     d3d11va
1319     dxva2
1320     libmfx
1321     mmal
1322     nvenc
1323     omx
1324     vaapi
1325     vda
1326     vdpau
1327 "
1328
1329 EXTERNAL_LIBRARY_GPL_LIST="
1330     libcdio
1331     libx264
1332     libx265
1333     libxavs
1334     libxvid
1335 "
1336
1337 EXTERNAL_LIBRARY_NONFREE_LIST="
1338     libfaac
1339     libfdk_aac
1340     openssl
1341 "
1342
1343 EXTERNAL_LIBRARY_VERSION3_LIST="
1344     libopencore_amrnb
1345     libopencore_amrwb
1346     libvo_aacenc
1347     libvo_amrwbenc
1348     mbedtls
1349 "
1350
1351 EXTERNAL_LIBRARY_LIST="
1352     $EXTERNAL_LIBRARY_GPL_LIST
1353     $EXTERNAL_LIBRARY_NONFREE_LIST
1354     $EXTERNAL_LIBRARY_VERSION3_LIST
1355     avisynth
1356     avxsynth
1357     frei0r
1358     gnutls
1359     libaom
1360     libbs2b
1361     libdav1d
1362     libdc1394
1363     libdcadec
1364     libfontconfig
1365     libfreetype
1366     libgsm
1367     libhdcd
1368     libilbc
1369     libjack
1370     libkvazaar
1371     libmp3lame
1372     libopencv
1373     libopenh264
1374     libopenjpeg
1375     libopus
1376     libpulse
1377     librtmp
1378     libschroedinger
1379     libsnappy
1380     libspeex
1381     libsrt
1382     libtheora
1383     libtwolame
1384     libvorbis
1385     libvpx
1386     libwavpack
1387     libwebp
1388     libxcb
1389     libxcb_shm
1390     libxcb_xfixes
1391 "
1392
1393 SYSTEM_LIBRARY_LIST="
1394     bzlib
1395     zlib
1396 "
1397
1398 FEATURE_LIST="
1399     gray
1400     hardcoded_tables
1401     omx_rpi
1402     runtime_cpudetect
1403     safe_bitstream_reader
1404     shared
1405     small
1406     sram
1407     static
1408     swscale_alpha
1409 "
1410
1411 LIBRARY_LIST="
1412     avcodec
1413     avdevice
1414     avfilter
1415     avformat
1416     avresample
1417     avutil
1418     swscale
1419 "
1420
1421 LICENSE_LIST="
1422     gpl
1423     nonfree
1424     version3
1425 "
1426
1427 PROGRAM_LIST="
1428     avconv
1429     avplay
1430     avprobe
1431 "
1432
1433 SUBSYSTEM_LIST="
1434     dct
1435     doc
1436     error_resilience
1437     faan
1438     fft
1439     lsp
1440     lzo
1441     mdct
1442     network
1443     rdft
1444 "
1445
1446 # COMPONENT_LIST needs to come last to ensure correct dependency checking
1447 CONFIG_LIST="
1448     $EXAMPLE_LIST
1449     $EXTERNAL_LIBRARY_LIST
1450     $HWACCEL_LIBRARY_LIST
1451     $FEATURE_LIST
1452     $LICENSE_LIST
1453     $LIBRARY_LIST
1454     $PROGRAM_LIST
1455     $SUBSYSTEM_LIST
1456     $SYSTEM_LIBRARY_LIST
1457     neon_clobber_test
1458     pic
1459     pod2man
1460     texi2html
1461     thumb
1462     valgrind_backtrace
1463     xmm_clobber_test
1464     $COMPONENT_LIST
1465 "
1466
1467 THREADS_LIST="
1468     pthreads
1469     w32threads
1470 "
1471
1472 ATOMICS_LIST="
1473     atomics_gcc
1474     atomics_suncc
1475     atomics_win32
1476 "
1477
1478 ARCH_LIST="
1479     aarch64
1480     alpha
1481     arm
1482     avr32
1483     avr32_ap
1484     avr32_uc
1485     bfin
1486     ia64
1487     m68k
1488     mips
1489     mips64
1490     parisc
1491     ppc
1492     ppc64
1493     s390
1494     sh4
1495     sparc
1496     sparc64
1497     tilegx
1498     tilepro
1499     tomi
1500     x86
1501     x86_32
1502     x86_64
1503 "
1504
1505 ARCH_EXT_LIST_ARM="
1506     armv5te
1507     armv6
1508     armv6t2
1509     armv8
1510     neon
1511     vfp
1512     vfpv3
1513 "
1514
1515 ARCH_EXT_LIST_X86_SIMD="
1516     amd3dnow
1517     amd3dnowext
1518     avx
1519     avx2
1520     fma3
1521     fma4
1522     mmx
1523     mmxext
1524     sse
1525     sse2
1526     sse3
1527     sse4
1528     sse42
1529     ssse3
1530     xop
1531 "
1532
1533 ARCH_EXT_LIST_PPC="
1534     altivec
1535     dcbzl
1536     ldbrx
1537     power8
1538     ppc4xx
1539     vsx
1540 "
1541
1542 ARCH_EXT_LIST_X86="
1543     $ARCH_EXT_LIST_X86_SIMD
1544     cpunop
1545     i686
1546 "
1547
1548 ARCH_EXT_LIST_MIPS="
1549     loongson
1550     mips32r1
1551     mips64r1
1552     mips32r2
1553     mips64r2
1554     mips32r6
1555     mips64r6
1556 "
1557
1558 ARCH_EXT_LIST="
1559     $ARCH_EXT_LIST_ARM
1560     $ARCH_EXT_LIST_MIPS
1561     $ARCH_EXT_LIST_PPC
1562     $ARCH_EXT_LIST_X86
1563     vis
1564 "
1565
1566 ARCH_FEATURES="
1567     aligned_stack
1568     fast_64bit
1569     fast_clz
1570     fast_cmov
1571     local_aligned_8
1572     local_aligned_16
1573     local_aligned_32
1574     simd_align_16
1575     simd_align_32
1576 "
1577
1578 BUILTIN_LIST="
1579     atomic_cas_ptr
1580     machine_rw_barrier
1581     MemoryBarrier
1582     mm_empty
1583     rdtsc
1584     sem_timedwait
1585     sync_val_compare_and_swap
1586 "
1587 HAVE_LIST_CMDLINE="
1588     inline_asm
1589     symver
1590     x86asm
1591 "
1592
1593 HAVE_LIST_PUB="
1594     bigendian
1595     fast_unaligned
1596 "
1597
1598 HEADERS_LIST="
1599     AVFoundation_AVFoundation_h
1600     arpa_inet_h
1601     cdio_paranoia_h
1602     cdio_paranoia_paranoia_h
1603     dispatch_dispatch_h
1604     dev_bktr_ioctl_bt848_h
1605     dev_bktr_ioctl_meteor_h
1606     dev_ic_bt8xx_h
1607     dev_video_bktr_ioctl_bt848_h
1608     dev_video_meteor_ioctl_meteor_h
1609     direct_h
1610     dxgidebug_h
1611     dxva_h
1612     io_h
1613     machine_ioctl_bt848_h
1614     machine_ioctl_meteor_h
1615     malloc_h
1616     poll_h
1617     sys_param_h
1618     sys_resource_h
1619     sys_select_h
1620     sys_soundcard_h
1621     sys_time_h
1622     sys_un_h
1623     sys_videoio_h
1624     unistd_h
1625     valgrind_valgrind_h
1626     windows_h
1627     winsock2_h
1628 "
1629
1630 INTRINSICS_LIST="
1631     intrinsics_neon
1632 "
1633
1634 MATH_FUNCS="
1635     atanf
1636     atan2f
1637     cbrtf
1638     cosf
1639     exp2
1640     exp2f
1641     expf
1642     isinf
1643     isnan
1644     ldexpf
1645     llrint
1646     llrintf
1647     log2
1648     log2f
1649     log10f
1650     lrint
1651     lrintf
1652     powf
1653     rint
1654     round
1655     roundf
1656     sinf
1657     trunc
1658     truncf
1659 "
1660
1661 SYSTEM_FEATURES="
1662     dos_paths
1663     libc_msvcrt
1664     MMAL_PARAMETER_VIDEO_MAX_NUM_CALLBACKS
1665     section_data_rel_ro
1666     threads
1667     uwp
1668 "
1669
1670 SYSTEM_FUNCS="
1671     aligned_malloc
1672     clock_gettime
1673     closesocket
1674     CommandLineToArgvW
1675     fcntl
1676     getaddrinfo
1677     gethrtime
1678     getopt
1679     GetProcessAffinityMask
1680     GetProcessMemoryInfo
1681     GetProcessTimes
1682     getrusage
1683     GetSystemTimeAsFileTime
1684     gettimeofday
1685     gmtime_r
1686     inet_aton
1687     isatty
1688     localtime_r
1689     mach_absolute_time
1690     MapViewOfFile
1691     memalign
1692     mmap
1693     mprotect
1694     nanosleep
1695     posix_memalign
1696     sched_getaffinity
1697     SetConsoleTextAttribute
1698     setmode
1699     setrlimit
1700     Sleep
1701     strerror_r
1702     sysconf
1703     sysctl
1704     usleep
1705     VirtualAlloc
1706 "
1707
1708 SYSTEM_LIBRARIES="
1709     bcrypt
1710     sdl
1711     vaapi_1
1712     vaapi_drm
1713     vaapi_x11
1714     vdpau_x11
1715 "
1716
1717 TOOLCHAIN_FEATURES="
1718     as_arch_directive
1719     as_fpu_directive
1720     as_func
1721     as_object_arch
1722     asm_mod_q
1723     blocks_extension
1724     ebp_available
1725     ebx_available
1726     gnu_as
1727     ibm_asm
1728     inline_asm_labels
1729     pragma_deprecated
1730     symver_asm_label
1731     symver_gnu_asm
1732     vfp_args
1733     xform_asm
1734     xmm_clobbers
1735 "
1736
1737 TYPES_LIST="
1738     CUVIDDECODECREATEINFO_bitDepthMinus8
1739     socklen_t
1740     struct_addrinfo
1741     struct_group_source_req
1742     struct_ip_mreq_source
1743     struct_ipv6_mreq
1744     struct_pollfd
1745     struct_rusage_ru_maxrss
1746     struct_sockaddr_in6
1747     struct_sockaddr_sa_len
1748     struct_sockaddr_storage
1749     struct_v4l2_frmivalenum_discrete
1750 "
1751
1752 HAVE_LIST="
1753     $ARCH_EXT_LIST
1754     $(add_suffix _external $ARCH_EXT_LIST)
1755     $(add_suffix _inline   $ARCH_EXT_LIST)
1756     $ARCH_FEATURES
1757     $BUILTIN_LIST
1758     $HAVE_LIST_CMDLINE
1759     $HAVE_LIST_PUB
1760     $HEADERS_LIST
1761     $INTRINSICS_LIST
1762     $MATH_FUNCS
1763     $SYSTEM_FEATURES
1764     $SYSTEM_FUNCS
1765     $SYSTEM_LIBRARIES
1766     $THREADS_LIST
1767     $TOOLCHAIN_FEATURES
1768     $TYPES_LIST
1769 "
1770
1771 # options emitted with CONFIG_ prefix but not available on the command line
1772 CONFIG_EXTRA="
1773     aandcttables
1774     ac3dsp
1775     adts_header
1776     audio_frame_queue
1777     audiodsp
1778     blockdsp
1779     bswapdsp
1780     cabac
1781     cbs
1782     cbs_h264
1783     cbs_h265
1784     cbs_mpeg2
1785     dirac_parse
1786     dvprofile
1787     faandct
1788     faanidct
1789     fdctdsp
1790     flacdsp
1791     fmtconvert
1792     g722dsp
1793     gmp
1794     golomb
1795     gplv3
1796     h263dsp
1797     h264chroma
1798     h264dsp
1799     h264parse
1800     h264pred
1801     h264qpel
1802     hevcparse
1803     hpeldsp
1804     huffman
1805     huffyuvdsp
1806     huffyuvencdsp
1807     idctdsp
1808     iirfilter
1809     imdct15
1810     intrax8
1811     iso_media
1812     ividsp
1813     jpegtables
1814     lgplv3
1815     libx262
1816     libxcb_shape
1817     lpc
1818     lzf
1819     me_cmp
1820     mpeg_er
1821     mpegaudio
1822     mpegaudiodsp
1823     mpegaudioheader
1824     mpegvideo
1825     mpegvideoenc
1826     mss34dsp
1827     pixblockdsp
1828     qpeldsp
1829     qsv
1830     qsvdec
1831     qsvenc
1832     qsvvpp
1833     rangecoder
1834     riffdec
1835     riffenc
1836     rtpdec
1837     rtpenc_chain
1838     rv34dsp
1839     sinewin
1840     snappy
1841     srtp
1842     startcode
1843     texturedsp
1844     texturedspenc
1845     tpeldsp
1846     vaapi_encode
1847     vc1dsp
1848     videodsp
1849     vp3dsp
1850     vp56dsp
1851     vp8dsp
1852     wma_freqs
1853     wmv2dsp
1854 "
1855
1856 CMDLINE_SELECT="
1857     $ARCH_EXT_LIST
1858     $CONFIG_LIST
1859     $HAVE_LIST_CMDLINE
1860     $THREADS_LIST
1861     asm
1862     cross_compile
1863     debug
1864     extra_warnings
1865     logging
1866     lto
1867     optimizations
1868     rpath
1869 "
1870
1871 PATHS_LIST="
1872     bindir
1873     datadir
1874     docdir
1875     incdir
1876     libdir
1877     mandir
1878     prefix
1879     shlibdir
1880 "
1881
1882 CMDLINE_SET="
1883     $PATHS_LIST
1884     ar
1885     arch
1886     as
1887     cc
1888     objcc
1889     cpu
1890     cross_prefix
1891     custom_allocator
1892     dep_cc
1893     env
1894     extra_version
1895     host_cc
1896     host_cflags
1897     host_extralibs
1898     host_ld
1899     host_ldflags
1900     host_os
1901     ignore_tests
1902     ld
1903     logfile
1904     malloc_prefix
1905     nm
1906     optflags
1907     pkg_config
1908     pkg_config_flags
1909     samples
1910     sysinclude
1911     sysroot
1912     target_exec
1913     target_os
1914     target_path
1915     target_samples
1916     toolchain
1917     x86asmexe
1918 "
1919
1920 CMDLINE_APPEND="
1921     extra_cflags
1922     extra_objcflags
1923     host_cppflags
1924 "
1925
1926 # code dependency declarations
1927
1928 # architecture extensions
1929
1930 armv5te_deps="arm"
1931 armv6_deps="arm"
1932 armv6t2_deps="arm"
1933 armv8_deps="aarch64"
1934 neon_deps_any="aarch64 arm"
1935 intrinsics_neon_deps="neon"
1936 vfp_deps_any="aarch64 arm"
1937 vfpv3_deps="vfp"
1938
1939 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1940
1941 altivec_deps="ppc"
1942 dcbzl_deps="ppc"
1943 ldbrx_deps="ppc"
1944 ppc4xx_deps="ppc"
1945 vsx_deps="altivec"
1946 power8_deps="vsx"
1947
1948 loongson_deps="mips"
1949 mips32r1_deps="mips32"
1950 mips32r2_deps="mips32"
1951 mips32r6_deps="mips32"
1952 mips64r1_deps="mips64"
1953 mips64r2_deps="mips64"
1954 mips64r6_deps="mips64"
1955
1956 vis_deps="sparc"
1957
1958 cpunop_deps="i686"
1959 x86_64_select="i686"
1960 x86_64_suggest="fast_cmov"
1961
1962 amd3dnow_deps="mmx"
1963 amd3dnowext_deps="amd3dnow"
1964 i686_deps="x86"
1965 mmx_deps="x86"
1966 mmxext_deps="mmx"
1967 sse_deps="mmxext"
1968 sse2_deps="sse"
1969 sse3_deps="sse2"
1970 ssse3_deps="sse3"
1971 sse4_deps="ssse3"
1972 sse42_deps="sse4"
1973 avx_deps="sse42"
1974 xop_deps="avx"
1975 fma3_deps="avx"
1976 fma4_deps="avx"
1977 avx2_deps="avx"
1978
1979 mmx_external_deps="x86asm"
1980 mmx_inline_deps="inline_asm x86"
1981 mmx_suggest="mmx_external mmx_inline"
1982
1983 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1984     eval dep=\$${ext}_deps
1985     eval ${ext}_external_deps='"${dep}_external"'
1986     eval ${ext}_inline_deps='"${dep}_inline"'
1987     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1988 done
1989
1990 aligned_stack_if_any="aarch64 ppc x86"
1991 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1992 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1993 fast_unaligned_if_any="aarch64 ppc x86"
1994 simd_align_16_if_any="altivec neon sse"
1995 simd_align_32_if_any="avx"
1996
1997 # system capabilities
1998 symver_if_any="symver_asm_label symver_gnu_asm"
1999 valgrind_backtrace_conflict="optimizations"
2000 valgrind_backtrace_deps="valgrind_valgrind_h"
2001
2002 # threading support
2003 atomics_gcc_if="sync_val_compare_and_swap"
2004 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2005 atomics_win32_if="MemoryBarrier"
2006 atomics_native_if_any="$ATOMICS_LIST"
2007 w32threads_deps="atomics_native CONDITION_VARIABLE"
2008 threads_if_any="$THREADS_LIST"
2009
2010 # subsystems
2011 cbs_h264_select="cbs golomb"
2012 cbs_h265_select="cbs golomb"
2013 cbs_mpeg2_select="cbs"
2014 dct_select="rdft"
2015 dirac_parse_select="golomb"
2016 error_resilience_select="me_cmp"
2017 faandct_deps="faan"
2018 faandct_select="fdctdsp"
2019 faanidct_deps="faan"
2020 faanidct_select="idctdsp"
2021 h264dsp_select="startcode"
2022 hevcparse_select="golomb"
2023 intrax8_select="blockdsp idctdsp"
2024 mdct_select="fft"
2025 rdft_select="fft"
2026 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2027 mpeg_er_select="error_resilience"
2028 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2029 mpegaudiodsp_select="dct"
2030 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
2031 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2032 vc1dsp_select="h264chroma qpeldsp startcode"
2033
2034 # decoders / encoders
2035 aac_decoder_select="adts_header imdct15 mdct sinewin"
2036 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2037 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2038 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2039 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2040 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2041 adpcm_g722_decoder_select="g722dsp"
2042 adpcm_g722_encoder_select="g722dsp"
2043 aic_decoder_select="golomb idctdsp"
2044 alac_encoder_select="lpc"
2045 als_decoder_select="bswapdsp"
2046 amrnb_decoder_select="lsp"
2047 amrwb_decoder_select="lsp"
2048 amv_decoder_select="sp5x_decoder"
2049 ape_decoder_select="bswapdsp"
2050 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2051 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2052 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2053 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2054 atrac1_decoder_select="mdct sinewin"
2055 atrac3_decoder_select="mdct"
2056 atrac3p_decoder_select="mdct sinewin"
2057 bink_decoder_select="blockdsp hpeldsp"
2058 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2059 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2060 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2061 clearvideo_decoder_select="idctdsp"
2062 cllc_decoder_select="bswapdsp"
2063 comfortnoise_encoder_select="lpc"
2064 cook_decoder_select="audiodsp mdct sinewin"
2065 cscd_decoder_select="lzo"
2066 cscd_decoder_suggest="zlib"
2067 dca_decoder_select="fmtconvert mdct"
2068 dds_decoder_select="texturedsp"
2069 dnxhd_decoder_select="blockdsp idctdsp"
2070 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2071 dvvideo_decoder_select="dvprofile idctdsp"
2072 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2073 dxa_decoder_deps="zlib"
2074 dxv_decoder_select="lzf texturedsp"
2075 eac3_decoder_select="ac3_decoder"
2076 eac3_encoder_select="ac3_encoder"
2077 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2078 eatgq_decoder_select="aandcttables idctdsp"
2079 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2080 exr_decoder_deps="zlib"
2081 ffv1_decoder_select="rangecoder"
2082 ffv1_encoder_select="rangecoder"
2083 ffvhuff_decoder_select="huffyuv_decoder"
2084 ffvhuff_encoder_select="huffyuv_encoder"
2085 fic_decoder_select="golomb"
2086 flac_decoder_select="flacdsp"
2087 flac_encoder_select="bswapdsp flacdsp lpc"
2088 flashsv_decoder_deps="zlib"
2089 flashsv_encoder_deps="zlib"
2090 flashsv2_decoder_deps="zlib"
2091 flv_decoder_select="h263_decoder"
2092 flv_encoder_select="h263_encoder"
2093 fourxm_decoder_select="blockdsp bswapdsp"
2094 fraps_decoder_select="bswapdsp huffman"
2095 g2m_decoder_deps="zlib"
2096 g2m_decoder_select="blockdsp idctdsp jpegtables"
2097 h261_decoder_select="mpeg_er mpegvideo"
2098 h261_encoder_select="aandcttables mpegvideoenc"
2099 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2100 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2101 h263i_decoder_select="h263_decoder"
2102 h263p_encoder_select="h263_encoder"
2103 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2104 h264_decoder_suggest="error_resilience"
2105 hap_decoder_select="snappy texturedsp"
2106 hap_encoder_deps="libsnappy"
2107 hap_encoder_select="texturedspenc"
2108 hevc_decoder_select="bswapdsp cabac hevcparse videodsp"
2109 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2110 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2111 iac_decoder_select="imc_decoder"
2112 imc_decoder_select="bswapdsp fft mdct sinewin"
2113 indeo3_decoder_select="hpeldsp"
2114 indeo4_decoder_select="ividsp"
2115 indeo5_decoder_select="ividsp"
2116 interplay_video_decoder_select="hpeldsp"
2117 jpegls_decoder_select="mjpeg_decoder"
2118 jv_decoder_select="blockdsp"
2119 lagarith_decoder_select="huffyuvdsp"
2120 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2121 magicyuv_decoder_select="huffyuvdsp"
2122 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2123 metasound_decoder_select="lsp mdct sinewin"
2124 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2125 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2126 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2127 mjpegb_decoder_select="mjpeg_decoder"
2128 mlp_decoder_select="mlp_parser"
2129 motionpixels_decoder_select="bswapdsp"
2130 mp1_decoder_select="mpegaudio"
2131 mp1float_decoder_select="mpegaudio"
2132 mp2_decoder_select="mpegaudio"
2133 mp2float_decoder_select="mpegaudio"
2134 mp3_decoder_select="mpegaudio"
2135 mp3adu_decoder_select="mpegaudio"
2136 mp3adufloat_decoder_select="mpegaudio"
2137 mp3float_decoder_select="mpegaudio"
2138 mp3on4_decoder_select="mpegaudio"
2139 mp3on4float_decoder_select="mpegaudio"
2140 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2141 mpc8_decoder_select="mpegaudiodsp"
2142 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2143 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2144 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2145 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2146 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2147 mpeg4_encoder_select="h263_encoder"
2148 msa1_decoder_select="mss34dsp"
2149 msmpeg4v1_decoder_select="h263_decoder"
2150 msmpeg4v2_decoder_select="h263_decoder"
2151 msmpeg4v2_encoder_select="h263_encoder"
2152 msmpeg4v3_decoder_select="h263_decoder"
2153 msmpeg4v3_encoder_select="h263_encoder"
2154 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2155 mts2_decoder_select="mss34dsp"
2156 mxpeg_decoder_select="mjpeg_decoder"
2157 nellymoser_decoder_select="mdct sinewin"
2158 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2159 nuv_decoder_select="idctdsp lzo"
2160 on2avc_decoder_select="mdct"
2161 opus_decoder_deps="avresample"
2162 opus_decoder_select="imdct15"
2163 png_decoder_deps="zlib"
2164 png_encoder_deps="zlib"
2165 png_encoder_select="huffyuvencdsp"
2166 prores_decoder_select="idctdsp"
2167 prores_encoder_select="fdctdsp"
2168 qcelp_decoder_select="lsp"
2169 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2170 ra_144_encoder_select="audio_frame_queue lpc"
2171 ralf_decoder_select="golomb"
2172 rscc_decoder_deps="zlib"
2173 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2174 rv10_encoder_select="h263_encoder"
2175 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2176 rv20_encoder_select="h263_encoder"
2177 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2178 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2179 screenpresso_decoder_deps="zlib"
2180 sipr_decoder_select="lsp"
2181 sp5x_decoder_select="mjpeg_decoder"
2182 svq1_decoder_select="hpeldsp"
2183 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2184 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2185 svq3_decoder_suggest="zlib"
2186 tak_decoder_select="audiodsp"
2187 tdsc_decoder_deps="zlib"
2188 tdsc_decoder_select="mjpeg_decoder"
2189 theora_decoder_select="vp3_decoder"
2190 thp_decoder_select="mjpeg_decoder"
2191 tiff_decoder_suggest="zlib"
2192 tiff_encoder_suggest="zlib"
2193 truehd_decoder_select="mlp_decoder"
2194 truemotion2_decoder_select="bswapdsp"
2195 truespeech_decoder_select="bswapdsp"
2196 tscc_decoder_deps="zlib"
2197 txd_decoder_select="texturedsp"
2198 twinvq_decoder_select="mdct lsp sinewin"
2199 utvideo_decoder_select="bswapdsp huffyuvdsp"
2200 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2201 vble_decoder_select="huffyuvdsp"
2202 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2203 vc1image_decoder_select="vc1_decoder"
2204 vorbis_decoder_select="mdct"
2205 vorbis_encoder_select="mdct"
2206 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2207 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2208 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2209 vp6a_decoder_select="vp6_decoder"
2210 vp6f_decoder_select="vp6_decoder"
2211 vp7_decoder_select="h264pred videodsp vp8dsp"
2212 vp8_decoder_select="h264pred videodsp vp8dsp"
2213 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2214 webp_decoder_select="vp8_decoder"
2215 wmapro_decoder_select="mdct sinewin wma_freqs"
2216 wmav1_decoder_select="mdct sinewin wma_freqs"
2217 wmav1_encoder_select="mdct sinewin wma_freqs"
2218 wmav2_decoder_select="mdct sinewin wma_freqs"
2219 wmav2_encoder_select="mdct sinewin wma_freqs"
2220 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2221 wmv1_decoder_select="h263_decoder"
2222 wmv1_encoder_select="h263_encoder"
2223 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2224 wmv2_encoder_select="h263_encoder wmv2dsp"
2225 wmv3_decoder_select="vc1_decoder"
2226 wmv3image_decoder_select="wmv3_decoder"
2227 zerocodec_decoder_deps="zlib"
2228 zlib_decoder_deps="zlib"
2229 zlib_encoder_deps="zlib"
2230 zmbv_decoder_deps="zlib"
2231 zmbv_encoder_deps="zlib"
2232
2233 # hardware accelerators
2234 d3d11va_deps="dxva_h ID3D11VideoDecoder"
2235 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2236 vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
2237 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2238
2239 h263_vaapi_hwaccel_deps="vaapi"
2240 h263_vaapi_hwaccel_select="h263_decoder"
2241 h264_cuvid_hwaccel_deps="cuvid CUVIDH264PICPARAMS"
2242 h264_cuvid_hwaccel_select="h264_decoder"
2243 h264_d3d11va_hwaccel_deps="d3d11va"
2244 h264_d3d11va_hwaccel_select="h264_decoder"
2245 h264_d3d11va2_hwaccel_deps="d3d11va"
2246 h264_d3d11va2_hwaccel_select="h264_decoder"
2247 h264_dxva2_hwaccel_deps="dxva2"
2248 h264_dxva2_hwaccel_select="h264_decoder"
2249 h264_vaapi_hwaccel_deps="vaapi"
2250 h264_vaapi_hwaccel_select="h264_decoder"
2251 h264_vda_hwaccel_deps="vda"
2252 h264_vda_hwaccel_select="h264_decoder"
2253 h264_vda_old_hwaccel_deps="vda"
2254 h264_vda_old_hwaccel_select="h264_decoder"
2255 h264_vdpau_hwaccel_deps="vdpau"
2256 h264_vdpau_hwaccel_select="h264_decoder"
2257 hevc_cuvid_hwaccel_deps="cuvid CUVIDHEVCPICPARAMS"
2258 hevc_cuvid_hwaccel_select="hevc_decoder"
2259 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2260 hevc_d3d11va_hwaccel_select="hevc_decoder"
2261 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2262 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2263 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2264 hevc_dxva2_hwaccel_select="hevc_decoder"
2265 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2266 hevc_vaapi_hwaccel_select="hevc_decoder"
2267 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2268 hevc_vdpau_hwaccel_select="hevc_decoder"
2269 mpeg1_vdpau_hwaccel_deps="vdpau"
2270 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2271 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2272 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2273 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2274 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2275 mpeg2_dxva2_hwaccel_deps="dxva2"
2276 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2277 mpeg2_vaapi_hwaccel_deps="vaapi"
2278 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2279 mpeg2_vdpau_hwaccel_deps="vdpau"
2280 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2281 mpeg4_vaapi_hwaccel_deps="vaapi"
2282 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2283 mpeg4_vdpau_hwaccel_deps="vdpau"
2284 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2285 vc1_d3d11va_hwaccel_deps="d3d11va"
2286 vc1_d3d11va_hwaccel_select="vc1_decoder"
2287 vc1_d3d11va2_hwaccel_deps="d3d11va"
2288 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2289 vc1_dxva2_hwaccel_deps="dxva2"
2290 vc1_dxva2_hwaccel_select="vc1_decoder"
2291 vc1_vaapi_hwaccel_deps="vaapi"
2292 vc1_vaapi_hwaccel_select="vc1_decoder"
2293 vc1_vdpau_hwaccel_deps="vdpau"
2294 vc1_vdpau_hwaccel_select="vc1_decoder"
2295 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2296 vp8_vaapi_hwaccel_select="vp8_decoder"
2297 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2298 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2299 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2300 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2301 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2302
2303 # hardware-accelerated codecs
2304 amf_deps_any="libdl LoadLibrary"
2305 nvenc_deps_any="libdl LoadLibrary"
2306 omx_deps="libdl pthreads"
2307 omx_rpi_select="omx"
2308 qsv_deps="libmfx"
2309 qsvdec_select="qsv"
2310 qsvenc_select="qsv"
2311 qsvvpp_select="qsv"
2312 vaapi_encode_deps="vaapi"
2313
2314 hwupload_cuda_filter_deps="cuda"
2315 scale_npp_filter_deps="cuda libnpp"
2316
2317 h264_amf_encoder_deps="amf"
2318 h264_mmal_decoder_deps="mmal"
2319 h264_nvenc_encoder_deps="nvenc"
2320 h264_omx_encoder_deps="omx"
2321 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2322 h264_qsv_encoder_select="qsvenc"
2323 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2324 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2325 hevc_amf_encoder_deps="amf"
2326 hevc_nvenc_encoder_deps="nvenc"
2327 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2328 hevc_qsv_encoder_select="hevcparse qsvenc"
2329 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2330 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2331 mjpeg_qsv_encoder_deps="libmfx"
2332 mjpeg_qsv_encoder_select="qsvenc"
2333 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2334 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2335 mpeg2_mmal_decoder_deps="mmal"
2336 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2337 mpeg2_qsv_encoder_select="qsvenc"
2338 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2339 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2340 mpeg4_omx_encoder_deps="omx"
2341 vc1_mmal_decoder_deps="mmal"
2342 vc1_qsv_decoder_select="qsvdec vc1_parser"
2343 vp8_qsv_decoder_select="qsvdec vp8_parser"
2344 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2345 vp8_vaapi_encoder_select="vaapi_encode"
2346 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2347 vp9_vaapi_encoder_select="vaapi_encode"
2348
2349 nvenc_h264_encoder_select="h264_nvenc_encoder"
2350 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2351
2352 # parsers
2353 aac_parser_select="adts_header"
2354 h264_parser_select="golomb h264dsp h264parse"
2355 hevc_parser_select="hevcparse"
2356 mpegaudio_parser_select="mpegaudioheader"
2357 mpegvideo_parser_select="mpegvideo"
2358 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2359 vc1_parser_select="vc1dsp"
2360
2361 # bitstream_filters
2362 aac_adtstoasc_bsf_select="adts_header"
2363 h264_metadata_bsf_select="cbs_h264"
2364 h264_redundant_pps_bsf_select="cbs_h264"
2365 hevc_metadata_bsf_select="cbs_h265"
2366 mjpeg2jpeg_bsf_select="jpegtables"
2367 mpeg2_metadata_bsf_select="cbs_mpeg2"
2368 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2369
2370 # external libraries
2371 avisynth_deps="LoadLibrary"
2372 avxsynth_deps="libdl"
2373 avisynth_demuxer_deps_any="avisynth avxsynth"
2374 avisynth_demuxer_select="riffdec"
2375 libaom_av1_decoder_deps="libaom"
2376 libaom_av1_encoder_deps="libaom"
2377 libdav1d_decoder_deps="libdav1d"
2378 libdcadec_decoder_deps="libdcadec"
2379 libfaac_encoder_deps="libfaac"
2380 libfaac_encoder_select="audio_frame_queue"
2381 libfdk_aac_decoder_deps="libfdk_aac"
2382 libfdk_aac_encoder_deps="libfdk_aac"
2383 libfdk_aac_encoder_select="audio_frame_queue"
2384 libgsm_decoder_deps="libgsm"
2385 libgsm_encoder_deps="libgsm"
2386 libgsm_ms_decoder_deps="libgsm"
2387 libgsm_ms_encoder_deps="libgsm"
2388 libilbc_decoder_deps="libilbc"
2389 libilbc_encoder_deps="libilbc"
2390 libkvazaar_encoder_deps="libkvazaar"
2391 libmp3lame_encoder_deps="libmp3lame"
2392 libmp3lame_encoder_select="audio_frame_queue mpegaudioheader"
2393 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2394 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2395 libopencore_amrnb_encoder_select="audio_frame_queue"
2396 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2397 libopenh264_decoder_deps="libopenh264"
2398 libopenh264_decoder_select="h264_mp4toannexb_bsf"
2399 libopenh264_encoder_deps="libopenh264"
2400 libopenjpeg_decoder_deps="libopenjpeg"
2401 libopenjpeg_encoder_deps="libopenjpeg"
2402 libopus_decoder_deps="libopus"
2403 libopus_encoder_deps="libopus"
2404 libopus_encoder_select="audio_frame_queue"
2405 libschroedinger_decoder_deps="libschroedinger"
2406 libschroedinger_encoder_deps="libschroedinger"
2407 libspeex_decoder_deps="libspeex"
2408 libspeex_encoder_deps="libspeex"
2409 libspeex_encoder_select="audio_frame_queue"
2410 libtheora_encoder_deps="libtheora"
2411 libtwolame_encoder_deps="libtwolame"
2412 libvo_aacenc_encoder_deps="libvo_aacenc"
2413 libvo_aacenc_encoder_select="audio_frame_queue"
2414 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2415 libvorbis_encoder_deps="libvorbis"
2416 libvorbis_encoder_select="audio_frame_queue"
2417 libvpx_vp8_decoder_deps="libvpx"
2418 libvpx_vp8_encoder_deps="libvpx"
2419 libvpx_vp9_decoder_deps="libvpx"
2420 libvpx_vp9_encoder_deps="libvpx"
2421 libwavpack_encoder_deps="libwavpack"
2422 libwavpack_encoder_select="audio_frame_queue"
2423 libwebp_encoder_deps="libwebp"
2424 libx262_encoder_deps="libx262"
2425 libx264_encoder_deps="libx264"
2426 libx265_encoder_deps="libx265"
2427 libxavs_encoder_deps="libxavs"
2428 libxvid_encoder_deps="libxvid mkstemp"
2429
2430 # demuxers / muxers
2431 ac3_demuxer_select="ac3_parser"
2432 asf_demuxer_select="riffdec"
2433 asf_muxer_select="riffenc"
2434 asf_stream_muxer_select="asf_muxer"
2435 avi_demuxer_select="iso_media riffdec"
2436 avi_muxer_select="riffenc"
2437 caf_demuxer_select="iso_media riffdec"
2438 dash_muxer_select="mp4_muxer"
2439 dirac_demuxer_select="dirac_parser"
2440 dv_demuxer_select="dvprofile"
2441 dv_muxer_select="dvprofile"
2442 dxa_demuxer_select="riffdec"
2443 eac3_demuxer_select="ac3_parser"
2444 f4v_muxer_select="mov_muxer"
2445 flac_demuxer_select="flac_parser"
2446 hds_muxer_select="flv_muxer"
2447 hls_muxer_select="mpegts_muxer"
2448 ipod_muxer_select="mov_muxer"
2449 ismv_muxer_select="mov_muxer"
2450 matroska_audio_muxer_select="matroska_muxer"
2451 matroska_demuxer_select="iso_media riffdec"
2452 matroska_demuxer_suggest="bzlib lzo zlib"
2453 matroska_muxer_select="iso_media riffenc"
2454 mmf_muxer_select="riffenc"
2455 mov_demuxer_select="iso_media riffdec"
2456 mov_demuxer_suggest="zlib"
2457 mov_muxer_select="iso_media riffenc rtpenc_chain"
2458 mp3_demuxer_select="mpegaudio_parser"
2459 mp3_muxer_select="mpegaudioheader"
2460 mp4_muxer_select="mov_muxer"
2461 mpegts_demuxer_select="iso_media"
2462 mpegts_muxer_select="adts_muxer latm_muxer"
2463 mpegtsraw_demuxer_select="mpegts_demuxer"
2464 mxf_d10_muxer_select="mxf_muxer"
2465 nut_muxer_select="riffenc"
2466 nuv_demuxer_select="riffdec"
2467 oga_muxer_select="ogg_muxer"
2468 ogg_demuxer_select="dirac_parse"
2469 opus_muxer_select="ogg_muxer"
2470 psp_muxer_select="mov_muxer"
2471 rtp_demuxer_select="sdp_demuxer"
2472 rtpdec_select="asf_demuxer jpegtables mov_demuxer mpegts_demuxer rm_demuxer rtp_protocol srtp"
2473 rtsp_demuxer_select="http_protocol rtpdec"
2474 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2475 sap_demuxer_select="sdp_demuxer"
2476 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2477 sdp_demuxer_select="rtpdec"
2478 smoothstreaming_muxer_select="ismv_muxer"
2479 spdif_demuxer_select="adts_header"
2480 spdif_muxer_select="adts_header"
2481 spx_muxer_select="ogg_muxer"
2482 swf_demuxer_suggest="zlib"
2483 tak_demuxer_select="tak_parser"
2484 tg2_muxer_select="mov_muxer"
2485 tgp_muxer_select="mov_muxer"
2486 w64_demuxer_select="wav_demuxer"
2487 wav_demuxer_select="riffdec"
2488 wav_muxer_select="riffenc"
2489 webm_muxer_select="iso_media riffenc"
2490 wtv_demuxer_select="mpegts_demuxer riffdec"
2491 xmv_demuxer_select="riffdec"
2492 xwma_demuxer_select="riffdec"
2493
2494 # indevs
2495 alsa_indev_deps="alsa"
2496 avfoundation_indev_deps="AVFoundation_AVFoundation_h objc_arc pthreads"
2497 avfoundation_indev_extralibs="-framework Foundation -framework AVFoundation -framework CoreVideo -framework CoreMedia"
2498 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2499 fbdev_indev_deps="linux_fb_h"
2500 jack_indev_deps="libjack"
2501 jack_indev_deps_any="sem_timedwait dispatch_dispatch_h"
2502 libcdio_indev_deps="libcdio"
2503 libdc1394_indev_deps="libdc1394"
2504 oss_indev_deps_any="sys_soundcard_h"
2505 pulse_indev_deps="libpulse"
2506 sndio_indev_deps="sndio"
2507 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2508 vfwcap_indev_deps="vfw32 vfwcap_defines"
2509 xcbgrab_indev_deps="libxcb libxcb_shape"
2510 xcbgrab_indev_suggest="libxcb_shm libxcb_xfixes"
2511
2512 # protocols
2513 ffrtmpcrypt_protocol_conflict="librtmp_protocol"
2514 ffrtmpcrypt_protocol_deps_any="gmp mbedtls openssl"
2515 ffrtmpcrypt_protocol_select="tcp_protocol"
2516 ffrtmphttp_protocol_conflict="librtmp_protocol"
2517 ffrtmphttp_protocol_select="http_protocol"
2518 gopher_protocol_select="network"
2519 http_protocol_select="tcp_protocol"
2520 http_protocol_suggest="zlib"
2521 httpproxy_protocol_select="tcp_protocol"
2522 httpproxy_protocol_suggest="zlib"
2523 https_protocol_select="tls_protocol"
2524 https_protocol_suggest="zlib"
2525 icecast_protocol_select="http_protocol"
2526 mmsh_protocol_select="http_protocol"
2527 mmst_protocol_select="network"
2528 rtmp_protocol_conflict="librtmp_protocol"
2529 rtmp_protocol_select="tcp_protocol"
2530 rtmp_protocol_suggest="zlib"
2531 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2532 rtmpe_protocol_suggest="zlib"
2533 rtmps_protocol_conflict="librtmp_protocol"
2534 rtmps_protocol_select="tls_protocol"
2535 rtmps_protocol_suggest="zlib"
2536 rtmpt_protocol_select="ffrtmphttp_protocol"
2537 rtmpt_protocol_suggest="zlib"
2538 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2539 rtmpte_protocol_suggest="zlib"
2540 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2541 rtmpts_protocol_suggest="zlib"
2542 rtp_protocol_select="udp_protocol"
2543 sctp_protocol_deps="struct_sctp_event_subscribe"
2544 sctp_protocol_select="network"
2545 srtp_protocol_select="rtp_protocol srtp"
2546 tcp_protocol_select="network"
2547 tls_protocol_deps_any="gnutls mbedtls openssl"
2548 tls_protocol_select="tcp_protocol"
2549 udp_protocol_select="network"
2550 unix_protocol_deps="sys_un_h"
2551 unix_protocol_select="network"
2552
2553 # external library protocols
2554 librtmp_protocol_deps="librtmp"
2555 librtmpe_protocol_deps="librtmp"
2556 librtmps_protocol_deps="librtmp"
2557 librtmpt_protocol_deps="librtmp"
2558 librtmpte_protocol_deps="librtmp"
2559 libsrt_protocol_deps="libsrt"
2560 libsrt_protocol_select="network"
2561
2562 # filters
2563 asyncts_filter_deps="avresample"
2564 blackframe_filter_deps="gpl"
2565 boxblur_filter_deps="gpl"
2566 bs2b_filter_deps="libbs2b"
2567 cropdetect_filter_deps="gpl"
2568 deinterlace_qsv_filter_deps="libmfx"
2569 deinterlace_vaapi_filter_deps="vaapi"
2570 delogo_filter_deps="gpl"
2571 drawtext_filter_deps="libfreetype"
2572 drawtext_filter_suggest="libfontconfig"
2573 frei0r_filter_deps="frei0r libdl"
2574 frei0r_src_filter_deps="frei0r libdl"
2575 hdcd_filter_deps="libhdcd"
2576 hqdn3d_filter_deps="gpl"
2577 interlace_filter_deps="gpl"
2578 movie_filter_deps="avcodec avformat"
2579 ocv_filter_deps="libopencv"
2580 overlay_qsv_filter_deps="libmfx"
2581 overlay_qsv_filter_select="qsvvpp"
2582 resample_filter_deps="avresample"
2583 scale_filter_deps="swscale"
2584 scale_qsv_filter_deps="libmfx"
2585 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2586 vpp_qsv_filter_deps="libmfx"
2587 vpp_qsv_filter_select="qsvvpp"
2588
2589 # examples
2590 decode_audio_example_deps="avcodec avutil"
2591 decode_video_example_deps="avcodec avutil"
2592 encode_audio_example_deps="avcodec avutil"
2593 encode_video_example_deps="avcodec avutil"
2594 filter_audio_example_deps="avfilter avutil"
2595 metadata_example_deps="avformat avutil"
2596 output_example_deps="avcodec avformat avresample avutil swscale"
2597 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2598 transcode_aac_example_deps="avcodec avformat avresample"
2599
2600 # EXTRALIBS_LIST
2601 cpu_init_extralibs="pthreads_extralibs"
2602 cws2fws_extralibs="zlib_extralibs"
2603
2604 # libraries, in linking order
2605 avcodec_deps="avutil"
2606 avcodec_select="null_bsf"
2607 avdevice_deps="avformat avcodec avutil"
2608 avfilter_deps="avutil"
2609 avformat_deps="avcodec avutil"
2610 avformat_suggest="network"
2611 avresample_deps="avutil"
2612 swscale_deps="avutil"
2613
2614 avcodec_extralibs="pthreads_extralibs libm_extralibs"
2615 avdevice_extralibs="libm_extralibs"
2616 avformat_extralibs="libm_extralibs"
2617 avfilter_extralibs="pthreads_extralibs libm_extralibs"
2618 avresample_extralibs="libm_extralibs"
2619 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"
2620 swscale_extralibs="libm_extralibs"
2621
2622 # programs
2623 avconv_deps="avcodec avfilter avformat avresample swscale"
2624 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2625                fps_filter null_filter resample_filter scale_filter
2626                trim_filter"
2627 avconv_suggest="psapi shell32"
2628 avplay_deps="avcodec avfilter avformat avresample sdl"
2629 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2630 avplay_suggest="shell32"
2631 avprobe_deps="avcodec avformat"
2632 avprobe_suggest="shell32"
2633
2634 # documentation
2635 pod2man_deps="doc"
2636 texi2html_deps="doc"
2637
2638 # default parameters
2639
2640 logfile="avbuild/config.log"
2641
2642 # installation paths
2643 prefix_default="/usr/local"
2644 bindir_default='${prefix}/bin'
2645 datadir_default='${prefix}/share/avconv'
2646 docdir_default='${prefix}/share/doc/libav'
2647 incdir_default='${prefix}/include'
2648 libdir_default='${prefix}/lib'
2649 mandir_default='${prefix}/share/man'
2650 shlibdir_default="$libdir_default"
2651
2652 # toolchain
2653 ar_default="ar"
2654 cc_default="gcc"
2655 host_cc_default="gcc"
2656 x86asmexe_default="nasm"
2657 ln_s="ln -s -f"
2658 nm_default="nm -g"
2659 pkg_config_default=pkg-config
2660 ranlib="ranlib"
2661 strip="strip"
2662 version_script='--version-script'
2663 objformat="elf32"
2664
2665 # machine
2666 arch_default=$(uname -m)
2667 cpu="generic"
2668 intrinsics="none"
2669
2670 # OS
2671 target_os_default=$(tolower $(uname -s))
2672 host_os=$target_os_default
2673
2674 # configurable options
2675 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2676
2677 enable asm
2678 enable debug
2679 enable doc
2680 enable faan faandct faanidct
2681 enable optimizations
2682 enable safe_bitstream_reader
2683 enable static
2684 enable swscale_alpha
2685 enable valgrind_backtrace
2686
2687 # By default, enable only those hwaccels that have no external dependencies.
2688 enable d3d11va dxva2 vda vdpau
2689
2690 # internal components are enabled by default
2691 enable $EXTRALIBS_LIST
2692
2693 # Avoid external, non-system, libraries getting enabled by dependency resolution
2694 disable $EXTERNAL_LIBRARY_LIST
2695
2696 # build settings
2697 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2698 LIBPREF="lib"
2699 LIBSUF=".a"
2700 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2701 SLIBPREF="lib"
2702 SLIBSUF=".so"
2703 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2704 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2705 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2706 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2707 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2708 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2709 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2710
2711 asflags_filter=echo
2712 cflags_filter=echo
2713 ldflags_filter=echo
2714
2715 AS_C='-c'
2716 AS_O='-o $@'
2717 CC_C='-c'
2718 CC_E='-E -o $@'
2719 CC_O='-o $@'
2720 OBJCC_C='-c'
2721 OBJCC_E='-E -o $@'
2722 OBJCC_O='-o $@'
2723 X86ASM_O='-o $@'
2724 LD_O='-o $@'
2725 LD_LIB='-l%'
2726 LD_PATH='-L'
2727 HOSTCC_C='-c'
2728 HOSTCC_E='-E -o $@'
2729 HOSTCC_O='-o $@'
2730 HOSTLD_O='-o $@'
2731
2732 host_extralibs='-lm'
2733 host_cflags_filter=echo
2734 host_ldflags_filter=echo
2735
2736 target_path='$(CURDIR)'
2737
2738 # since the object filename is not given with the -MM flag, the compiler
2739 # is only able to print the basename, and we must add the path ourselves
2740 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2741 DEPFLAGS='-MM'
2742
2743 mkdir -p avbuild
2744
2745 # find source path
2746 if test -f configure; then
2747     source_path=.
2748 else
2749     source_path=$(cd $(dirname "$0"); pwd)
2750     echo "$source_path" | grep -q '[[:blank:]]' &&
2751         die "Out of tree builds are impossible with whitespace in source path."
2752     test -e "$source_path/config.h" &&
2753         die "Out of tree builds are impossible with config.h in source dir."
2754 fi
2755
2756 for v in "$@"; do
2757     r=${v#*=}
2758     l=${v%"$r"}
2759     r=$(sh_quote "$r")
2760     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2761 done
2762
2763 find_things(){
2764     thing=$1
2765     pattern=$2
2766     file=$source_path/$3
2767     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2768 }
2769
2770 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2771 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2772 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2773 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2774 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2775 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2776 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2777
2778 find_things_extern(){
2779     thing=$1
2780     pattern=$2
2781     file=$source_path/$3
2782     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2783 }
2784
2785 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2786 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
2787 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2788
2789 AVCODEC_COMPONENTS_LIST="
2790     $BSF_LIST
2791     $DECODER_LIST
2792     $ENCODER_LIST
2793     $HWACCEL_LIST
2794     $PARSER_LIST
2795 "
2796
2797 AVDEVICE_COMPONENTS_LIST="
2798     $INDEV_LIST
2799 "
2800
2801 AVFILTER_COMPONENTS_LIST="
2802     $FILTER_LIST
2803 "
2804
2805 AVFORMAT_COMPONENTS_LIST="
2806     $DEMUXER_LIST
2807     $MUXER_LIST
2808     $PROTOCOL_LIST
2809 "
2810
2811 ALL_COMPONENTS="
2812     $AVCODEC_COMPONENTS_LIST
2813     $AVDEVICE_COMPONENTS_LIST
2814     $AVFILTER_COMPONENTS_LIST
2815     $AVFORMAT_COMPONENTS_LIST
2816 "
2817
2818 for n in $COMPONENT_LIST; do
2819     v=$(toupper ${n%s})_LIST
2820     eval enable \$$v
2821     eval ${n}_if_any="\$$v"
2822 done
2823
2824 enable $ARCH_EXT_LIST
2825
2826 die_unknown(){
2827     echo "Unknown option \"$1\"."
2828     echo "See $0 --help for available options."
2829     exit 1
2830 }
2831
2832 print_3_columns() {
2833     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2834 }
2835
2836 show_list() {
2837     suffix=_$1
2838     shift
2839     echo $* | sed s/$suffix//g | print_3_columns
2840     exit 0
2841 }
2842
2843 for opt do
2844     optval="${opt#*=}"
2845     case "$opt" in
2846         --extra-ldflags=*)
2847             add_ldflags $optval
2848         ;;
2849         --extra-ldexeflags=*)
2850             add_ldexeflags $optval
2851         ;;
2852         --extra-ldsoflags=*)
2853             add_ldsoflags $optval
2854         ;;
2855         --extra-libs=*)
2856             add_extralibs $optval
2857         ;;
2858         --disable-devices)
2859             disable $INDEV_LIST
2860         ;;
2861         --enable-debug=*)
2862             debuglevel="$optval"
2863         ;;
2864         --disable-programs)
2865             disable $PROGRAM_LIST
2866         ;;
2867         --disable-everything)
2868             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2869         ;;
2870         --disable-all)
2871             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2872             disable $LIBRARY_LIST $PROGRAM_LIST doc
2873         ;;
2874         --enable-*=*|--disable-*=*)
2875             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2876             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2877             eval list=\$$(toupper $thing)_LIST
2878             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2879             $action $(filter "$name" $list)
2880         ;;
2881         --enable-yasm|--disable-yasm)
2882             warn "The ${opt} option is only provided for compatibility and will be\n"\
2883                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
2884             test $opt = --enable-yasm && x86asm=yes || x86asm=no
2885         ;;
2886         --enable-?*|--disable-?*)
2887             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2888             if is_in $option $COMPONENT_LIST; then
2889                 test $action = disable && action=unset
2890                 eval $action \$$(toupper ${option%s})_LIST
2891             elif is_in $option $CMDLINE_SELECT; then
2892                 $action $option
2893             else
2894                 die_unknown $opt
2895             fi
2896         ;;
2897         --list-*)
2898             NAME="${opt#--list-}"
2899             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2900             NAME=${NAME%s}
2901             eval show_list $NAME \$$(toupper $NAME)_LIST
2902         ;;
2903         --help|-h) show_help
2904         ;;
2905         --quiet|-q) quiet=yes
2906         ;;
2907         *)
2908             optname="${opt%%=*}"
2909             optname="${optname#--}"
2910             optname=$(echo "$optname" | sed 's/-/_/g')
2911             if is_in $optname $CMDLINE_SET; then
2912                 eval $optname='$optval'
2913             elif is_in $optname $CMDLINE_APPEND; then
2914                 append $optname "$optval"
2915             else
2916                 die_unknown $opt
2917             fi
2918         ;;
2919     esac
2920 done
2921
2922 for e in $env; do
2923     eval "export $e"
2924 done
2925
2926 disabled logging && logfile=/dev/null
2927
2928 # command line configuration sanity checks
2929
2930 # we need to build at least one lib type
2931 if ! enabled_any static shared; then
2932     cat <<EOF
2933 At least one library type must be built.
2934 Specify --enable-static to build the static libraries or --enable-shared to
2935 build the shared libraries as well. To only build the shared libraries specify
2936 --disable-static in addition to --enable-shared.
2937 EOF
2938     exit 1
2939 fi
2940
2941 # Die early if licensing-related configure options are incompatible.
2942 die_license_disabled() {
2943     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2944 }
2945
2946 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2947 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2948 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2949
2950 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2951
2952 if enabled nonfree; then
2953     license="nonfree and unredistributable"
2954 elif enabled gplv3; then
2955     license="GPL version 3 or later"
2956 elif enabled lgplv3; then
2957     license="LGPL version 3 or later"
2958 elif enabled gpl; then
2959     license="GPL version 2 or later"
2960 else
2961     license="LGPL version 2.1 or later"
2962 fi
2963
2964 enabled_all gnutls openssl &&
2965     die "GnuTLS and OpenSSL must not be enabled at the same time."
2966
2967 enabled_all gnutls mbedtls &&
2968     die "GnuTLS and mbedTLS must not be enabled at the same time."
2969
2970 enabled_all openssl mbedtls &&
2971     die "OpenSSL and mbedTLS must not be enabled at the same time."
2972
2973 # Disable all the library-specific components if the library itself
2974 # is disabled, see AVCODEC_LIST and following _LIST variables.
2975
2976 disable_components(){
2977     disabled ${1} && disable $(
2978         eval components="\$$(toupper ${1})_COMPONENTS"
2979         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2980     )
2981 }
2982
2983 map 'disable_components $v' $LIBRARY_LIST
2984
2985 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2986 set >> $logfile
2987
2988 case "$toolchain" in
2989     *-asan)
2990         cc_default="${toolchain%-asan}"
2991         add_cflags  -fsanitize=address
2992         add_ldflags -fsanitize=address
2993     ;;
2994     *-msan)
2995         cc_default="${toolchain%-msan}"
2996         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2997         add_ldflags -fsanitize=memory
2998     ;;
2999     *-tsan)
3000         cc_default="${toolchain%-tsan}"
3001         add_cflags  -fsanitize=thread -fPIE
3002         add_ldflags -fsanitize=thread -pie
3003         case "$toolchain" in
3004             gcc-tsan)
3005                 add_cflags  -fPIC
3006                 add_ldflags -fPIC
3007                 ;;
3008         esac
3009     ;;
3010     *-usan)
3011         cc_default="${toolchain%-usan}"
3012         add_cflags  -fsanitize=undefined
3013         add_ldflags -fsanitize=undefined
3014         case "$toolchain" in
3015             clang-usan)
3016                 add_cflags -O1
3017                 ;;
3018         esac
3019     ;;
3020     valgrind-*)
3021         target_exec_default="valgrind"
3022         case "$toolchain" in
3023             valgrind-massif)
3024                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
3025                 ;;
3026             valgrind-memcheck)
3027                 target_exec_args="--track-origins=yes --leak-check=full"
3028                 ;;
3029         esac
3030     ;;
3031     msvc)
3032         # Check whether the current MSVC version needs the C99 converter.
3033         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3034         # support enough of C99 to build libav. Default to the new
3035         # behaviour if the regexp was unable to match anything, since this
3036         # successfully parses the version number of existing supported
3037         # versions that require the converter (MSVC 2010 and 2012).
3038         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3039         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3040             cc_default="cl"
3041         else
3042             cc_default="c99wrap cl"
3043         fi
3044         ld_default="$source_path/compat/windows/mslink"
3045         nm_default="dumpbin -symbols"
3046         ar_default="lib"
3047         case "$arch" in
3048         aarch64|arm64)
3049             as_default="armasm64"
3050             ;;
3051         arm*)
3052             as_default="armasm"
3053             ;;
3054         esac
3055         target_os_default="win32"
3056         # Use a relative path for TMPDIR. This makes sure all the
3057         # ffconf temp files are written with a relative path, avoiding
3058         # issues with msys/win32 path conversion for MSVC parameters
3059         # such as -Fo<file> or -out:<file>.
3060         TMPDIR=.
3061     ;;
3062     icl)
3063         cc_default="icl"
3064         ld_default="xilink"
3065         nm_default="dumpbin -symbols"
3066         ar_default="xilib"
3067         target_os_default="win32"
3068         TMPDIR=.
3069     ;;
3070     gcov)
3071         add_cflags  -fprofile-arcs -ftest-coverage
3072         add_ldflags -fprofile-arcs -ftest-coverage
3073     ;;
3074     llvm-cov)
3075         add_cflags -fprofile-arcs -ftest-coverage
3076         add_ldflags --coverage
3077     ;;
3078     hardened)
3079         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3080         add_cflags   -fno-strict-overflow -fstack-protector-all
3081         add_ldflags  -Wl,-z,relro -Wl,-z,now
3082     ;;
3083     ?*)
3084         die "Unknown toolchain $toolchain"
3085     ;;
3086 esac
3087
3088 if test -n "$cross_prefix"; then
3089     test -n "$arch" && test -n "$target_os" ||
3090         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3091     enable cross_compile
3092 fi
3093
3094 ar_default="${cross_prefix}${ar_default}"
3095 cc_default="${cross_prefix}${cc_default}"
3096 objcc_default="${cross_prefix}${objcc_default}"
3097 x86asmexe_default="${cross_prefix}${x86asmexe_default}"
3098 nm_default="${cross_prefix}${nm_default}"
3099 pkg_config_default="${cross_prefix}${pkg_config_default}"
3100 ranlib="${cross_prefix}${ranlib}"
3101 strip="${cross_prefix}${strip}"
3102
3103 sysinclude_default="${sysroot}/usr/include"
3104
3105 set_default arch cc pkg_config sysinclude target_exec target_os x86asmexe
3106 enabled cross_compile || host_cc_default=$cc
3107 set_default host_cc
3108
3109 if ! $pkg_config --version >/dev/null 2>&1; then
3110     warn "$pkg_config not found, library detection may fail."
3111     pkg_config=false
3112 fi
3113
3114 exesuf() {
3115     case $1 in
3116         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3117     esac
3118 }
3119
3120 EXESUF=$(exesuf $target_os)
3121 HOSTEXESUF=$(exesuf $host_os)
3122
3123 # set temporary file name
3124 : ${TMPDIR:=$TEMPDIR}
3125 : ${TMPDIR:=$TMP}
3126 : ${TMPDIR:=/tmp}
3127
3128 if ! test_cmd mktemp -u XXXXXX; then
3129     # simple replacement for missing mktemp
3130     # NOT SAFE FOR GENERAL USE
3131     mktemp(){
3132         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3133         echo "$tmpname"
3134         mkdir "$tmpname"
3135     }
3136 fi
3137
3138 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
3139     die "Unable to create temporary directory in $TMPDIR."
3140
3141 tmpfile(){
3142     tmp="${AVTMPDIR}/test"$2
3143     (set -C; exec > $tmp) 2> /dev/null ||
3144         die "Unable to create temporary file in $AVTMPDIR."
3145     eval $1=$tmp
3146 }
3147
3148 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3149 trap 'exit 2' INT
3150
3151 tmpfile TMPASM .asm
3152 tmpfile TMPC   .c
3153 tmpfile TMPE   $EXESUF
3154 tmpfile TMPH   .h
3155 tmpfile TMPO   .o
3156 tmpfile TMPS   .S
3157 tmpfile TMPSH  .sh
3158 tmpfile TMPV   .ver
3159
3160 unset -f mktemp
3161
3162 chmod +x $TMPE
3163
3164 # make sure we can execute files in $TMPDIR
3165 cat > $TMPSH 2>> $logfile <<EOF
3166 #! /bin/sh
3167 EOF
3168 chmod +x $TMPSH >> $logfile 2>&1
3169 if ! $TMPSH >> $logfile 2>&1; then
3170     cat <<EOF
3171 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3172 variable to another directory and make sure that it is not mounted noexec.
3173 EOF
3174     die "Sanity test failed."
3175 fi
3176
3177 armasm_flags(){
3178     for flag; do
3179         case $flag in
3180             # Filter out MSVC cl.exe options from cflags that shouldn't
3181             # be passed to gas-preprocessor
3182             -M[TD]*)                                            ;;
3183             *)                  echo $flag                      ;;
3184         esac
3185    done
3186 }
3187
3188 cparser_flags(){
3189     for flag; do
3190         case $flag in
3191             -Wno-switch)             echo -Wno-switch-enum ;;
3192             -Wno-format-zero-length) ;;
3193             -Wdisabled-optimization) ;;
3194             -Wno-pointer-sign)       echo -Wno-other ;;
3195             *)                       echo $flag ;;
3196         esac
3197     done
3198 }
3199
3200 msvc_common_flags(){
3201     for flag; do
3202         case $flag in
3203             # In addition to specifying certain flags under the compiler
3204             # specific filters, they must be specified here as well or else the
3205             # generic catch all at the bottom will print the original flag.
3206             -Wall)                ;;
3207             -Wextra)              ;;
3208             -std=c99)             ;;
3209             # Common flags
3210             -fomit-frame-pointer) ;;
3211             -g)                   echo -Z7 ;;
3212             -fno-math-errno)      ;;
3213             -fno-common)          ;;
3214             -fno-signed-zeros)    ;;
3215             -fPIC)                ;;
3216             -mthumb)              ;;
3217             -march=*)             ;;
3218             -lz)                  echo zlib.lib ;;
3219             -lx264)               echo libx264.lib ;;
3220             -l*)                  echo ${flag#-l}.lib ;;
3221             -L*)                  echo -libpath:${flag#-L} ;;
3222             *)                    echo $flag ;;
3223         esac
3224     done
3225 }
3226
3227 msvc_flags(){
3228     msvc_common_flags "$@"
3229     for flag; do
3230         case $flag in
3231             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3232                                        -wd4554 ;;
3233             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3234                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3235                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3236                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3237         esac
3238     done
3239 }
3240
3241 icl_flags(){
3242     msvc_common_flags "$@"
3243     for flag; do
3244         case $flag in
3245             # Despite what Intel's documentation says -Wall, which is supported
3246             # on Windows, does enable remarks so disable them here.
3247             -Wall)                echo $flag -Qdiag-disable:remark ;;
3248             -std=c99)             echo -Qstd=c99 ;;
3249         esac
3250     done
3251 }
3252
3253 suncc_flags(){
3254     for flag; do
3255         case $flag in
3256             -march=*|-mcpu=*)
3257                 case "${flag#*=}" in
3258                     native)                   echo -xtarget=native       ;;
3259                     v9|niagara)               echo -xarch=sparc          ;;
3260                     ultrasparc)               echo -xarch=sparcvis       ;;
3261                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3262                     i586|pentium)             echo -xchip=pentium        ;;
3263                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3264                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3265                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3266                     pentium4*)          echo -xtarget=pentium4           ;;
3267                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3268                     *-sse3)             echo -xarch=sse3                 ;;
3269                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3270                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3271                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3272                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3273                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3274                     k8|opteron|athlon64|athlon-fx)
3275                                                echo -xarch=sse2a         ;;
3276                     athlon*)                   echo -xarch=pentium_proa  ;;
3277                 esac
3278                 ;;
3279             -std=c99)             echo -xc99              ;;
3280             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3281             -fPIC)                echo -KPIC -xcode=pic32 ;;
3282             -W*,*)                echo $flag              ;;
3283             -f*-*|-W*|-mimpure-text)                      ;;
3284             -shared)              echo -G                 ;;
3285             *)                    echo $flag              ;;
3286         esac
3287     done
3288 }
3289
3290 probe_cc(){
3291     pfx=$1
3292     _cc=$2
3293
3294     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3295     unset _ld_o _ldflags _ld_lib _ld_path
3296     unset _depflags _DEPCMD _DEPFLAGS
3297     _flags_filter=echo
3298
3299     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3300         _type=llvm_gcc
3301         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3302         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3303         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3304         _cflags_speed='-O3'
3305         _cflags_size='-Os'
3306     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3307         _type=gcc
3308         gcc_version=$($_cc --version | head -n1)
3309         gcc_basever=$($_cc -dumpversion)
3310         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3311         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3312         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3313         if ! $_cc -dumpversion | grep -q '^2\.'; then
3314             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3315         fi
3316         _cflags_speed='-O3'
3317         _cflags_size='-Os'
3318     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3319         _type=icc
3320         _ident=$($_cc --version | head -n1)
3321         _depflags='-MMD'
3322         _cflags_speed='-O3'
3323         _cflags_size='-Os'
3324         _cflags_noopt='-O1'
3325     elif $_cc -v 2>&1 | grep -q xlc; then
3326         _type=xlc
3327         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3328         _cflags_speed='-O5'
3329         _cflags_size='-O5 -qcompact'
3330     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3331         test -d "$sysroot" || die "No valid sysroot specified."
3332         _type=armcc
3333         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3334         armcc_conf="$PWD/armcc.conf"
3335         $_cc --arm_linux_configure                 \
3336              --arm_linux_config_file="$armcc_conf" \
3337              --configure_sysroot="$sysroot"        \
3338              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3339              die "Error creating armcc configuration file."
3340         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3341         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3342         as_default="${cross_prefix}gcc"
3343         _depflags='-MMD'
3344         _cflags_speed='-O3'
3345         _cflags_size='-Os'
3346     elif $_cc -v 2>&1 | grep -q clang; then
3347         _type=clang
3348         _ident=$($_cc --version 2>/dev/null | head -n1)
3349         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3350         _cflags_speed='-O3'
3351         _cflags_size='-Os'
3352     elif $_cc -V 2>&1 | grep -q Sun; then
3353         _type=suncc
3354         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3355         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3356         _DEPFLAGS='-xM1 -xc99'
3357         _ldflags='-std=c99'
3358         _cflags_speed='-O5'
3359         _cflags_size='-O5 -xspace'
3360         _flags_filter=suncc_flags
3361     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3362         _type=pathscale
3363         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3364         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3365         _cflags_speed='-O2'
3366         _cflags_size='-Os'
3367         _flags_filter='filter_out -Wdisabled-optimization'
3368     elif $_cc -v 2>&1 | grep -q Open64; then
3369         _type=open64
3370         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3371         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3372         _cflags_speed='-O2'
3373         _cflags_size='-Os'
3374         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3375     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3376         _type=armasm
3377         _ident=$($_cc | head -n1)
3378         # 4509: "This form of conditional instruction is deprecated"
3379         _flags="-nologo -ignore 4509"
3380         _flags_filter=armasm_flags
3381     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3382         _type=msvc
3383         _ident=$($_cc 2>&1 | head -n1)
3384         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3385         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3386         _cflags_speed="-O2"
3387         _cflags_size="-O1"
3388         _cflags_noopt="-O1"
3389         if $_cc -nologo- 2>&1 | grep -q Linker; then
3390             _ld_o='-out:$@'
3391         else
3392             _ld_o='-Fe$@'
3393         fi
3394         _cc_o='-Fo$@'
3395         _cc_e='-P -Fi$@'
3396         _flags_filter=msvc_flags
3397         _ld_lib='lib%.a'
3398         _ld_path='-libpath:'
3399         _flags='-nologo'
3400     elif $_cc 2>&1 | grep -q Intel; then
3401         _type=icl
3402         _ident=$($_cc 2>&1 | head -n1)
3403         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3404         # Not only is O3 broken on 13.x+ but it is slower on all previous
3405         # versions (tested) as well.
3406         _cflags_speed="-O2"
3407         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3408         if $_cc 2>&1 | grep -q Linker; then
3409             _ld_o='-out:$@'
3410         else
3411             _ld_o='-Fe$@'
3412         fi
3413         _cc_o='-Fo$@'
3414         _cc_e='-P'
3415         _flags_filter=icl_flags
3416         _ld_lib='lib%.a'
3417         _ld_path='-libpath:'
3418         # -Qdiag-error to make icl error when seeing certain unknown arguments
3419         _flags='-nologo -Qdiag-error:4044,10157'
3420         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3421         # with MSVC which enables it by default.
3422         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3423     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3424         # lld can emulate multiple different linkers; in ms link.exe mode,
3425         # the -? parameter gives the help output which contains an identifyable
3426         # string, while it gives an error in other modes.
3427         _type=lld-link
3428         # The link.exe mode doesn't have a switch for getting the version,
3429         # but we can force it back to gnu mode and get the version from there.
3430         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3431         _ld_o='-out:$@'
3432         _flags_filter=msvc_flags
3433         _ld_lib='lib%.a'
3434         _ld_path='-libpath:'
3435     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3436         _type=cparser
3437         _ident=$($_cc --version | head -n1)
3438         _depflags='-MMD'
3439         _cflags_speed='-O4'
3440         _cflags_size='-O2'
3441         _flags_filter=cparser_flags
3442     fi
3443
3444     eval ${pfx}_type=\$_type
3445     eval ${pfx}_ident=\$_ident
3446 }
3447
3448 set_ccvars(){
3449     eval ${1}_C=\${_cc_c-\${${1}_C}}
3450     eval ${1}_E=\${_cc_e-\${${1}_E}}
3451     eval ${1}_O=\${_cc_o-\${${1}_O}}
3452
3453     if [ -n "$_depflags" ]; then
3454         eval ${1}_DEPFLAGS=\$_depflags
3455     else
3456         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3457         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3458         eval DEP${1}FLAGS=\$_flags
3459     fi
3460 }
3461
3462 probe_cc cc "$cc"
3463 cflags_filter=$_flags_filter
3464 cflags_speed=$_cflags_speed
3465 cflags_size=$_cflags_size
3466 cflags_noopt=$_cflags_noopt
3467 add_cflags $_flags $_cflags
3468 cc_ldflags=$_ldflags
3469 set_ccvars CC
3470
3471 probe_cc hostcc "$host_cc"
3472 host_cflags_filter=$_flags_filter
3473 host_cflags_speed=$_cflags_speed
3474 add_host_cflags  $_flags $_cflags
3475 set_ccvars HOSTCC
3476
3477 test -n "$cc_type" && enable $cc_type ||
3478     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3479
3480 : ${as_default:=$cc}
3481 : ${objcc_default:=$cc}
3482 : ${dep_cc_default:=$cc}
3483 : ${ld_default:=$cc}
3484 : ${host_ld_default:=$host_cc}
3485 set_default ar as objcc dep_cc ld host_ld
3486
3487 probe_cc as "$as"
3488 asflags_filter=$_flags_filter
3489 add_asflags $_flags $_cflags
3490 set_ccvars AS
3491
3492 probe_cc objcc "$objcc"
3493 objcflags_filter=$_flags_filter
3494 add_objcflags $_flags $_cflags
3495 set_ccvars OBJC
3496
3497 probe_cc ld "$ld"
3498 ldflags_filter=$_flags_filter
3499 add_ldflags $_flags $_ldflags
3500 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3501 LD_O=${_ld_o-$LD_O}
3502 LD_LIB=${_ld_lib-$LD_LIB}
3503 LD_PATH=${_ld_path-$LD_PATH}
3504
3505 probe_cc hostld "$host_ld"
3506 host_ldflags_filter=$_flags_filter
3507 add_host_ldflags $_flags $_ldflags
3508 HOSTLD_O=${_ld_o-$HOSTLD_O}
3509
3510 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3511     probe_cc depcc "$dep_cc"
3512     CCDEP=${_DEPCMD:-$DEPCMD}
3513     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3514     DEPCCFLAGS=$_flags
3515 fi
3516
3517 if $ar 2>&1 | grep -q Microsoft; then
3518     arflags="-nologo"
3519     ar_o='-out:$@'
3520 else
3521     arflags="rc"
3522     ar_o='$@'
3523 fi
3524
3525 add_cflags $extra_cflags
3526 add_objcflags $extra_objcflags
3527 add_asflags $extra_cflags
3528
3529 if test -n "$sysroot"; then
3530     case "$cc_type" in
3531         gcc|llvm_gcc|clang)
3532             add_cppflags --sysroot="$sysroot"
3533             add_ldflags --sysroot="$sysroot"
3534         ;;
3535     esac
3536 fi
3537
3538 if test "$cpu" = host; then
3539     enabled cross_compile &&
3540         die "--cpu=host makes no sense when cross-compiling."
3541
3542     case "$cc_type" in
3543         gcc|llvm_gcc)
3544             check_native(){
3545                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3546                 sed -n "/cc1.*$1=/{
3547                             s/.*$1=\\([^ ]*\\).*/\\1/
3548                             p
3549                             q
3550                         }" $TMPE
3551             }
3552             cpu=$(check_native -march || check_native -mcpu)
3553         ;;
3554     esac
3555
3556     test "${cpu:-host}" = host &&
3557         die "--cpu=host not supported with compiler $cc"
3558 fi
3559
3560 # Deal with common $arch aliases
3561 case "$arch" in
3562     aarch64|arm64)
3563         arch="aarch64"
3564     ;;
3565     arm*)
3566         arch="arm"
3567     ;;
3568     mips*|IP*)
3569         case "$arch" in
3570         *el)
3571             add_cppflags -EL
3572             add_ldflags -EL
3573         ;;
3574         *eb)
3575             add_cppflags -EB
3576             add_ldflags -EB
3577         ;;
3578         esac
3579         arch="mips"
3580     ;;
3581     parisc*|hppa*)
3582         arch="parisc"
3583     ;;
3584     "Power Macintosh"|ppc*|powerpc*)
3585         arch="ppc"
3586     ;;
3587     s390|s390x)
3588         arch="s390"
3589     ;;
3590     sh4|sh)
3591         arch="sh4"
3592     ;;
3593     sun4u|sparc*)
3594         arch="sparc"
3595     ;;
3596     tilegx|tile-gx)
3597         arch="tilegx"
3598     ;;
3599     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3600         arch="x86"
3601     ;;
3602 esac
3603
3604 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3605 enable $arch
3606
3607 # Add processor-specific flags
3608 if enabled aarch64; then
3609
3610     case $cpu in
3611         armv*)
3612             cpuflags="-march=$cpu"
3613         ;;
3614         *)
3615             cpuflags="-mcpu=$cpu"
3616         ;;
3617     esac
3618
3619 elif enabled alpha; then
3620
3621     cpuflags="-mcpu=$cpu"
3622
3623 elif enabled arm; then
3624
3625     check_arm_arch() {
3626         test_cpp_condition stddef.h \
3627             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3628             $cpuflags
3629     }
3630
3631     probe_arm_arch() {
3632         if   check_arm_arch 4;        then echo armv4
3633         elif check_arm_arch 4T;       then echo armv4t
3634         elif check_arm_arch 5;        then echo armv5
3635         elif check_arm_arch 5E;       then echo armv5e
3636         elif check_arm_arch 5T;       then echo armv5t
3637         elif check_arm_arch 5TE;      then echo armv5te
3638         elif check_arm_arch 5TEJ;     then echo armv5te
3639         elif check_arm_arch 6;        then echo armv6
3640         elif check_arm_arch 6J;       then echo armv6j
3641         elif check_arm_arch 6K;       then echo armv6k
3642         elif check_arm_arch 6Z;       then echo armv6z
3643         elif check_arm_arch 6ZK;      then echo armv6zk
3644         elif check_arm_arch 6T2;      then echo armv6t2
3645         elif check_arm_arch 7;        then echo armv7
3646         elif check_arm_arch 7A  7_A;  then echo armv7-a
3647         elif check_arm_arch 7S;       then echo armv7-a
3648         elif check_arm_arch 7R  7_R;  then echo armv7-r
3649         elif check_arm_arch 7M  7_M;  then echo armv7-m
3650         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3651         elif check_arm_arch 8A  8_A;  then echo armv8-a
3652         fi
3653     }
3654
3655     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3656
3657     case $cpu in
3658         armv*)
3659             cpuflags="-march=$cpu"
3660             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3661         ;;
3662         *)
3663             cpuflags="-mcpu=$cpu"
3664             case $cpu in
3665                 cortex-a*)                               subarch=armv7a  ;;
3666                 cortex-r*)                               subarch=armv7r  ;;
3667                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3668                 arm11*)                                  subarch=armv6   ;;
3669                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3670                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3671                 *)                             subarch=$(probe_arm_arch) ;;
3672             esac
3673         ;;
3674     esac
3675
3676     case "$subarch" in
3677         armv5t*)    enable fast_clz                ;;
3678         armv[6-8]*) enable fast_clz fast_unaligned ;;
3679     esac
3680
3681 elif enabled avr32; then
3682
3683     case $cpu in
3684         ap7[02]0[0-2])
3685             subarch="avr32_ap"
3686             cpuflags="-mpart=$cpu"
3687         ;;
3688         ap)
3689             subarch="avr32_ap"
3690             cpuflags="-march=$cpu"
3691         ;;
3692         uc3[ab]*)
3693             subarch="avr32_uc"
3694             cpuflags="-mcpu=$cpu"
3695         ;;
3696         uc)
3697             subarch="avr32_uc"
3698             cpuflags="-march=$cpu"
3699         ;;
3700     esac
3701
3702 elif enabled bfin; then
3703
3704     cpuflags="-mcpu=$cpu"
3705
3706 elif enabled mips; then
3707
3708     cpuflags="-march=$cpu"
3709
3710 elif enabled ppc; then
3711
3712     disable ldbrx
3713
3714     case $(tolower $cpu) in
3715         601|ppc601|powerpc601)
3716             cpuflags="-mcpu=601"
3717             disable altivec
3718         ;;
3719         603*|ppc603*|powerpc603*)
3720             cpuflags="-mcpu=603"
3721             disable altivec
3722         ;;
3723         604*|ppc604*|powerpc604*)
3724             cpuflags="-mcpu=604"
3725             disable altivec
3726         ;;
3727         g3|75*|ppc75*|powerpc75*)
3728             cpuflags="-mcpu=750"
3729             disable altivec
3730         ;;
3731         g4|745*|ppc745*|powerpc745*)
3732             cpuflags="-mcpu=7450"
3733             disable vsx
3734         ;;
3735         74*|ppc74*|powerpc74*)
3736             cpuflags="-mcpu=7400"
3737             disable vsx
3738         ;;
3739         g5|970|ppc970|powerpc970)
3740             cpuflags="-mcpu=970"
3741             disable vsx
3742         ;;
3743         power[3-6]*)
3744             cpuflags="-mcpu=$cpu"
3745             disable vsx
3746         ;;
3747         power[7-8]*)
3748             cpuflags="-mcpu=$cpu"
3749             enable ldbrx
3750         ;;
3751         cell)
3752             cpuflags="-mcpu=cell"
3753             enable ldbrx
3754             disable vsx
3755         ;;
3756         e500mc)
3757             cpuflags="-mcpu=e500mc"
3758             disable altivec
3759         ;;
3760         e500v2)
3761             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3762             disable altivec
3763             disable dcbzl
3764         ;;
3765         e500)
3766             cpuflags="-mcpu=8540 -mhard-float"
3767             disable altivec
3768             disable dcbzl
3769         ;;
3770     esac
3771
3772 elif enabled sparc; then
3773
3774     case $cpu in
3775         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3776             cpuflags="-mcpu=$cpu"
3777         ;;
3778         ultrasparc*|niagara[234])
3779             cpuflags="-mcpu=$cpu"
3780         ;;
3781     esac
3782
3783 elif enabled x86; then
3784
3785     case $cpu in
3786         i[345]86|pentium)
3787             cpuflags="-march=$cpu"
3788             disable i686
3789             disable mmx
3790         ;;
3791         # targets that do NOT support nopl and conditional mov (cmov)
3792         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3793             cpuflags="-march=$cpu"
3794             disable i686
3795         ;;
3796         # targets that do support nopl and conditional mov (cmov)
3797         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3798             cpuflags="-march=$cpu"
3799             enable i686
3800             enable fast_cmov
3801         ;;
3802         # targets that do support conditional mov but on which it's slow
3803         pentium4|pentium4m|prescott|nocona)
3804             cpuflags="-march=$cpu"
3805             enable i686
3806             disable fast_cmov
3807         ;;
3808     esac
3809
3810 fi
3811
3812 if [ "$cpu" != generic ]; then
3813     add_cflags  $cpuflags
3814     add_asflags $cpuflags
3815     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3816 fi
3817
3818 # compiler sanity check
3819 test_exec <<EOF
3820 int main(void){ return 0; }
3821 EOF
3822 if test "$?" != 0; then
3823     echo "$cc is unable to create an executable file."
3824     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3825         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3826         echo "Only do this if you know what cross compiling means."
3827     fi
3828     die "C compiler test failed."
3829 fi
3830
3831 add_cppflags -D_ISOC99_SOURCE
3832
3833 # some compilers silently accept -std=c11, so we also need to check that the
3834 # version macro is defined properly
3835 test_cpp_condition stdlib.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
3836     add_cflags -std=c11 ||
3837     check_cflags -std=c99
3838
3839 check_cppflags -D_FILE_OFFSET_BITS=64
3840 check_cppflags -D_LARGEFILE_SOURCE
3841
3842 add_host_cppflags -D_ISOC99_SOURCE
3843 check_host_cflags -std=c99
3844 check_host_cflags -Wall
3845 check_host_cflags $host_cflags_speed
3846
3847 check_64bit(){
3848     arch32=$1
3849     arch64=$2
3850     expr=${3:-'sizeof(void *) > 4'}
3851     test_code cc "" "int test[2*($expr) - 1]" &&
3852         subarch=$arch64 || subarch=$arch32
3853     enable $subarch
3854 }
3855
3856 case "$arch" in
3857     aarch64|alpha|ia64)
3858         enabled shared && enable_weak pic
3859     ;;
3860     mips)
3861         check_64bit mips mips64 '_MIPS_SIM > 1'
3862         enabled shared && enable_weak pic
3863     ;;
3864     parisc)
3865         check_64bit parisc parisc64
3866         enabled shared && enable_weak pic
3867     ;;
3868     ppc)
3869         check_64bit ppc ppc64
3870         enabled shared && enable_weak pic
3871     ;;
3872     s390)
3873         check_64bit s390 s390x
3874         enabled shared && enable_weak pic
3875     ;;
3876     sparc)
3877         check_64bit sparc sparc64
3878         enabled shared && enable_weak pic
3879     ;;
3880     x86)
3881         check_64bit x86_32 x86_64
3882         if enabled x86_64; then
3883             enabled shared && enable_weak pic
3884             objformat=elf64
3885         fi
3886     ;;
3887 esac
3888
3889 # OS specific
3890 case $target_os in
3891     aix)
3892         SHFLAGS=-shared
3893         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3894         enabled shared && add_ldflags -Wl,-brtl
3895         arflags='-Xany -r -c'
3896         ;;
3897     android)
3898         disable symver
3899         enable section_data_rel_ro
3900         SLIB_INSTALL_NAME='$(SLIBNAME)'
3901         SLIB_INSTALL_LINKS=
3902         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3903         ;;
3904     haiku)
3905         prefix_default="/boot/common"
3906         network_extralibs="-lnetwork"
3907         host_extralibs=
3908         ;;
3909     sunos)
3910         SHFLAGS='-shared -Wl,-h,$$(@F)'
3911         enabled x86 && append SHFLAGS -mimpure-text
3912         network_extralibs="-lsocket -lnsl"
3913         # When using suncc to build, the Solaris linker will mark
3914         # an executable with each instruction set encountered by
3915         # the Solaris assembler.  As our libraries contain their own
3916         # guards for processor-specific code, instead suppress
3917         # generation of the HWCAPS ELF section on Solaris x86 only.
3918         enabled_all suncc x86 &&
3919             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3920             add_ldflags -Wl,-M,mapfile
3921         nm_default='nm -P -g'
3922         version_script='-M'
3923         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3924         ;;
3925     netbsd)
3926         disable symver
3927         oss_indev_extralibs="-lossaudio"
3928         ;;
3929     openbsd|bitrig)
3930         disable symver
3931         SHFLAGS='-shared'
3932         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3933         SLIB_INSTALL_LINKS=
3934         oss_indev_extralibs="-lossaudio"
3935         ;;
3936     dragonfly)
3937         disable symver
3938         ;;
3939     freebsd)
3940         ;;
3941     bsd/os)
3942         add_extralibs -lpoll -lgnugetopt
3943         ;;
3944     darwin)
3945         enabled ppc && add_asflags -force_cpusubtype_ALL
3946         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3947         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3948         add_ldflags -Wl,-dynamic,-search_paths_first
3949         check_cflags -Werror=partial-availability
3950         SLIBSUF=".dylib"
3951         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3952         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3953         enabled x86_64 && objformat="macho64" || objformat="macho32"
3954         enabled_any pic shared ||
3955             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3956         check_headers dispatch/dispatch.h &&
3957             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3958         if test -n "$sysroot"; then
3959             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
3960             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
3961         fi
3962         ;;
3963     msys*)
3964         die "Native MSYS builds are discouraged, please use the MINGW environment."
3965         ;;
3966     mingw32*|mingw64*)
3967         target_os=mingw32
3968         LIBTARGET=i386
3969         if enabled x86_64; then
3970             LIBTARGET="i386:x86-64"
3971         elif enabled arm; then
3972             LIBTARGET="arm"
3973         elif enabled aarch64; then
3974             LIBTARGET="arm64"
3975         fi
3976         if enabled shared; then
3977             # Cannot build both shared and static libs when using dllimport.
3978             disable static
3979         fi
3980         check_ldflags -Wl,--nxcompat
3981         check_ldflags -Wl,--dynamicbase
3982         shlibdir_default="$bindir_default"
3983         SLIBPREF=""
3984         SLIBSUF=".dll"
3985         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3986         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3987         SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3988         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3989         SLIB_INSTALL_LINKS=
3990         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3991         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3992         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3993         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-auto-image-base $$(@:$(SLIBSUF)=.def)'
3994         enabled x86_64 && objformat="win64" || objformat="win32"
3995         dlltool="${cross_prefix}dlltool"
3996         ranlib=:
3997         enable dos_paths
3998         ;;
3999     win32|win64)
4000         disable symver
4001         if enabled shared; then
4002             # Link to the import library instead of the normal static library
4003             # for shared libs.
4004             LD_LIB='%.lib'
4005             # Cannot build both shared and static libs with MSVC or icl.
4006             disable static
4007         fi
4008         shlibdir_default="$bindir_default"
4009         SLIBPREF=""
4010         SLIBSUF=".dll"
4011         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4012         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4013         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4014         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4015         SLIB_INSTALL_LINKS=
4016         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4017         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4018         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4019         enabled x86_64 && objformat="win64" || objformat="win32"
4020         ranlib=:
4021         enable dos_paths
4022         ;;
4023     cygwin*)
4024         target_os=cygwin
4025         shlibdir_default="$bindir_default"
4026         SLIBPREF="cyg"
4027         SLIBSUF=".dll"
4028         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4029         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4030         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4031         SLIB_INSTALL_LINKS=
4032         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
4033         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
4034         enabled x86_64 && objformat="win64" || objformat="win32"
4035         enable dos_paths
4036         ;;
4037     *-dos|freedos|opendos)
4038         network_extralibs="-lsocket"
4039         objformat="coff"
4040         enable dos_paths
4041         add_cppflags -U__STRICT_ANSI__
4042         ;;
4043     linux)
4044         enable section_data_rel_ro
4045         ;;
4046     irix*)
4047         target_os=irix
4048         ranlib="echo ignoring ranlib"
4049         ;;
4050     os/2*)
4051         ln_s="cp -f"
4052         objformat="aout"
4053         add_cppflags -D_GNU_SOURCE
4054         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4055         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4056         LIBSUF="_s.a"
4057         SLIBPREF=""
4058         SLIBSUF=".dll"
4059         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4060         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4061         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4062             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4063             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4064             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4065             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4066         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4067             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4068         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4069         enable dos_paths
4070         ;;
4071     gnu/kfreebsd)
4072         add_cppflags -D_BSD_SOURCE
4073         ;;
4074     gnu)
4075         ;;
4076     qnx)
4077         add_cppflags -D_QNX_SOURCE
4078         network_extralibs="-lsocket"
4079         ;;
4080     symbian)
4081         SLIBSUF=".dll"
4082         enable dos_paths
4083         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4084         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4085         add_ldflags -Wl,--target1-abs,--no-undefined \
4086                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4087                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4088         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4089                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4090                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4091         ;;
4092     minix)
4093         ;;
4094     none)
4095         ;;
4096     *)
4097         die "Unknown OS '$target_os'."
4098         ;;
4099 esac
4100
4101 # determine libc flavour
4102
4103 probe_libc(){
4104     pfx=$1
4105     pfx_no_=${pfx%_}
4106     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4107     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4108         eval ${pfx}libc_type=uclibc
4109         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4110     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4111         eval ${pfx}libc_type=glibc
4112         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4113     # MinGW headers can be installed on Cygwin, so check for newlib first.
4114     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4115         eval ${pfx}libc_type=newlib
4116         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4117         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
4118             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
4119     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4120     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4121         eval ${pfx}libc_type=mingw64
4122         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4123         eval test \$${pfx_no_}cc_type = "gcc" &&
4124             add_${pfx}cppflags -D__printf__=__gnu_printf__
4125         test_${pfx}cpp_condition windows.h "!defined(_WIN32_WINNT) || _WIN32_WINNT < 0x0600" &&
4126             add_${pfx}cppflags -D_WIN32_WINNT=0x0600
4127     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||