configure: Use indirection for the -o assembler flag also for x86asm
[libav.git] / configure
1 #!/bin/sh
2 #
3 # Libav configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN LIBAV, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken Libav."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --quiet                  Suppress showing informative output
67   --list-decoders          show all available decoders
68   --list-encoders          show all available encoders
69   --list-hwaccels          show all available hardware accelerators
70   --list-demuxers          show all available demuxers
71   --list-muxers            show all available muxers
72   --list-parsers           show all available parsers
73   --list-protocols         show all available protocols
74   --list-bsfs              show all available bitstream filters
75   --list-indevs            show all available input devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [avbuild/config.log]
80   --disable-logging        do not log configure debug information
81   --prefix=PREFIX          install in PREFIX [$prefix_default]
82   --bindir=DIR             install binaries in DIR [PREFIX/bin]
83   --datadir=DIR            install data files in DIR [PREFIX/share/avconv]
84   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/libav]
85   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89   --enable-rpath           use rpath when linking programs (USE WITH CARE)
90
91 Licensing options:
92   --enable-gpl             allow use of GPL code, the resulting libs
93                            and binaries will be under GPL [no]
94   --enable-version3        upgrade (L)GPL to version 3 [no]
95   --enable-nonfree         allow use of nonfree code, the resulting libs
96                            and binaries will be unredistributable [no]
97
98 Configuration options:
99   --disable-static         do not build static libraries [no]
100   --enable-shared          build shared libraries [no]
101   --enable-small           optimize for size instead of speed
102   --enable-runtime-cpudetect detect CPU capabilities at runtime (bigger binary)
103   --enable-gray            enable full grayscale support (slower color)
104   --disable-swscale-alpha  disable alpha channel support in swscale
105   --disable-all            disable building components, libraries and programs
106
107 Program options:
108   --disable-programs       do not build command line programs
109   --disable-avconv         disable avconv build
110   --disable-avplay         disable avplay build
111   --disable-avprobe        disable avprobe build
112
113 Component options:
114   --disable-doc            do not build documentation
115   --disable-pod2man        do not build manual pages
116   --disable-texi2html      do not build HTML documentation
117   --disable-avdevice       disable libavdevice build
118   --disable-avcodec        disable libavcodec build
119   --disable-avformat       disable libavformat build
120   --disable-avutil         disable libavutil build
121   --disable-swscale        disable libswscale build
122   --disable-avfilter       disable video filter support [no]
123   --disable-avresample     disable libavresample build [no]
124   --disable-pthreads       disable pthreads [auto]
125   --disable-w32threads     disable Win32 threads [auto]
126   --disable-network        disable network support [no]
127   --disable-dct            disable DCT code
128   --disable-error-resilience disable error resilience code
129   --disable-lsp            disable LSP code
130   --disable-lzo            disable LZO decoder code
131   --disable-mdct           disable MDCT code
132   --disable-rdft           disable RDFT code
133   --disable-fft            disable FFT code
134   --disable-faan           disable floating point AAN (I)DCT code
135
136 Individual component options:
137   --disable-everything     disable all components listed below
138   --disable-encoder=NAME   disable encoder NAME
139   --enable-encoder=NAME    enable encoder NAME
140   --disable-encoders       disable all encoders
141   --disable-decoder=NAME   disable decoder NAME
142   --enable-decoder=NAME    enable decoder NAME
143   --disable-decoders       disable all decoders
144   --disable-hwaccel=NAME   disable hwaccel NAME
145   --enable-hwaccel=NAME    enable hwaccel NAME
146   --disable-hwaccels       disable all hwaccels
147   --disable-muxer=NAME     disable muxer NAME
148   --enable-muxer=NAME      enable muxer NAME
149   --disable-muxers         disable all muxers
150   --disable-demuxer=NAME   disable demuxer NAME
151   --enable-demuxer=NAME    enable demuxer NAME
152   --disable-demuxers       disable all demuxers
153   --enable-parser=NAME     enable parser NAME
154   --disable-parser=NAME    disable parser NAME
155   --disable-parsers        disable all parsers
156   --enable-bsf=NAME        enable bitstream filter NAME
157   --disable-bsf=NAME       disable bitstream filter NAME
158   --disable-bsfs           disable all bitstream filters
159   --enable-protocol=NAME   enable protocol NAME
160   --disable-protocol=NAME  disable protocol NAME
161   --disable-protocols      disable all protocols
162   --enable-indev=NAME      enable input device NAME
163   --disable-indev=NAME     disable input device NAME
164   --disable-indevs         disable input devices
165   --disable-devices        disable all devices
166   --enable-filter=NAME     enable filter NAME
167   --disable-filter=NAME    disable filter NAME
168   --disable-filters        disable all filters
169
170 External library support:
171
172   Using any of the following switches will allow Libav to link to the
173   corresponding external library. All the components depending on that library
174   will become enabled, if all their other dependencies are met and they are not
175   explicitly disabled. E.g. --enable-libwavpack will enable linking to
176   libwavpack and allow the libwavpack encoder to be built, unless it is
177   specifically disabled with --disable-encoder=libwavpack.
178
179   Note that only the system libraries are auto-detected. All the other external
180   libraries must be explicitly enabled.
181
182   Also note that the following help text describes the purpose of the libraries
183   themselves, not all their features will necessarily be usable by Libav.
184
185   --enable-avisynth          video frameserver
186   --enable-avxsynth          Linux version of AviSynth
187   --enable-bzlib             bzip2 compression [autodetect]
188   --enable-frei0r            video filtering plugins
189   --enable-gnutls            crypto
190   --enable-libaom            AV1 video encoding/decoding
191   --enable-libbs2b           Bauer stereophonic-to-binaural DSP
192   --enable-libcdio           audio CD input
193   --enable-libdc1394         IEEE 1394/Firewire camera input
194   --enable-libdcadec         DCA audio decoding
195   --enable-libfaac           AAC audio encoding
196   --enable-libfdk-aac        AAC audio encoding/decoding
197   --enable-libfontconfig     font configuration and management
198   --enable-libfreetype       font rendering
199   --enable-libgsm            GSM audio encoding/decoding
200   --enable-libhdcd           HDCD decoding filter
201   --enable-libilbc           ILBC audio encoding/decoding
202   --enable-libjack           JACK audio sound server
203   --enable-libkvazaar        HEVC video encoding
204   --enable-libmp3lame        MP3 audio encoding
205   --enable-libopencore-amrnb AMR-NB audio encoding/decoding
206   --enable-libopencore-amrwb AMR-WB audio decoding
207   --enable-libopencv         computer vision
208   --enable-libopenh264       H.264 video encoding/decoding
209   --enable-libopenjpeg       JPEG 2000 image encoding/decoding
210   --enable-libopus           Opus audio encoding/decoding
211   --enable-libpulse          Pulseaudio sound server
212   --enable-librtmp           RTMP streaming
213   --enable-libschroedinger   Dirac video encoding/decoding
214   --enable-libsnappy         snappy compression
215   --enable-libspeex          Speex audio encoding/decoding
216   --enable-libtheora         Theora video encoding/decoding
217   --enable-libtwolame        MP2 audio encoding
218   --enable-libvo-aacenc      AAC audio encoding
219   --enable-libvo-amrwbenc    AMR-WB audio encoding
220   --enable-libvorbis         Vorbis audio encoding/decoding
221   --enable-libvpx            VP* video encoding/decoding
222   --enable-libwavpack        Wavpack audio encoding/decoding
223   --enable-libwebp           WebP image encoding/decoding
224   --enable-libx264           H.264 video encoding
225   --enable-libx265           HEVC video encoding
226   --enable-libxavs           Chinese AVS video encoding
227   --enable-libxcb            X window system protocol communication
228   --enable-libxcb-shm        X11 shm communication [auto]
229   --enable-libxcb-xfixes     X11 mouse rendering [auto]
230   --enable-libxvid           MPEG-4 ASP video encoding
231   --enable-openssl           crypto
232   --enable-zlib              compression [autodetect]
233
234   The following libraries provide various hardware acceleration features:
235   --enable-amf     AMF video encoding code [auto]
236   --enable-cuda    Nvidia CUDA (dynamically linked)
237   --enable-cuvid   Nvidia CUVID video decode acceleration
238   --enable-d3d11va Microsoft Direct3D 11 video acceleration [auto]
239   --enable-dxva2   Microsoft DirectX 9 video acceleration [auto]
240   --enable-libmfx  Intel MediaSDK (AKA Quick Sync Video)
241   --enable-libnpp  Nvidia CUDA processing
242   --enable-mmal    Broadcom Multi-Media Abstraction Layer (Raspberry Pi)
243   --enable-nvenc   Nvidia video encoding
244   --enable-omx     OpenMAX IL
245   --enable-omx-rpi OpenMAX IL for Raspberry Pi
246   --enable-vaapi   Video Acceleration API (mainly Unix/Intel)
247   --enable-vda     Apple Video Decode Acceleration [auto]
248   --enable-vdpau   Nvidia Video Decode and Presentation API for Unix [auto]
249
250 Toolchain options:
251   --arch=ARCH              select architecture [$arch]
252   --cpu=CPU                select the minimum required CPU (affects
253                            instruction selection, may crash on older CPUs)
254   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
255   --enable-cross-compile   assume a cross-compiler is used
256   --sysroot=PATH           root of cross-build tree
257   --sysinclude=PATH        location of cross-build system headers
258   --target-os=OS           compiler targets OS [$target_os]
259   --target-exec=CMD        command to run executables on target
260   --target-path=DIR        path to view of build directory on target
261   --target-samples=DIR     path to samples directory on target
262   --toolchain=NAME         set tool defaults according to NAME
263                            (gcc-asan, clang-asan, gcc-msan, clang-msan,
264                            gcc-tsan, clang-tsan, gcc-usan, clang-usan,
265                            valgrind-massif, valgrind-memcheck,
266                            msvc, icl, gcov, llvm-cov, hardened)
267   --nm=NM                  use nm tool
268   --ar=AR                  use archive tool AR [$ar_default]
269   --as=AS                  use assembler AS [$as_default]
270   --cc=CC                  use C compiler CC [$cc_default]
271   --objcc=OCC              use ObjC compiler OCC [$cc_default]
272   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
273   --ld=LD                  use linker LD
274   --x86asmexe=X86ASM       use x86 assembler X86ASM
275   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
276   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
277   --host-cc=HOSTCC         use host C compiler HOSTCC
278   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
279   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
280   --host-ld=HOSTLD         use host linker HOSTLD
281   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
282   --host-libs=HLIBS        use libs HLIBS when linking for host
283   --host-os=OS             compiler host OS [$target_os]
284   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
285   --extra-objcflags=FLAGS  add FLAGS to OBJCFLAGS [$CFLAGS]
286   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
287   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
288   --extra-ldsoflags=ELDFLAGS add ELDFLAGS to LDSOFLAGS [$LDSOFLAGS]
289   --extra-libs=ELIBS       add ELIBS [$ELIBS]
290   --extra-version=STRING   version string suffix []
291   --optflags=OPTFLAGS      override optimization-related compiler flags
292   --enable-pic             build position-independent code
293   --enable-thumb           compile for Thumb instruction set
294   --enable-lto             use link-time optimization
295   --env="ENV=override"     override the environment variables
296
297 Advanced options (experts only):
298   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
299   --custom-allocator=NAME  use a supported custom allocator
300   --disable-symver         disable symbol versioning
301   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
302   --disable-safe-bitstream-reader
303                            disable buffer boundary checking in bitreaders
304                            (faster, but may crash)
305   --enable-sram            allow use of on-chip SRAM
306
307 Optimization options (experts only):
308   --disable-asm            disable all assembly optimizations
309   --disable-altivec        disable AltiVec optimizations
310   --disable-vsx            disable VSX optimizations
311   --disable-power8         disable POWER8 optimizations
312   --disable-amd3dnow       disable 3DNow! optimizations
313   --disable-amd3dnowext    disable 3DNow! extended optimizations
314   --disable-mmx            disable MMX optimizations
315   --disable-mmxext         disable MMXEXT optimizations
316   --disable-sse            disable SSE optimizations
317   --disable-sse2           disable SSE2 optimizations
318   --disable-sse3           disable SSE3 optimizations
319   --disable-ssse3          disable SSSE3 optimizations
320   --disable-sse4           disable SSE4 optimizations
321   --disable-sse42          disable SSE4.2 optimizations
322   --disable-avx            disable AVX optimizations
323   --disable-xop            disable XOP optimizations
324   --disable-fma3           disable FMA3 optimizations
325   --disable-fma4           disable FMA4 optimizations
326   --disable-avx2           disable AVX2 optimizations
327   --disable-armv5te        disable armv5te optimizations
328   --disable-armv6          disable armv6 optimizations
329   --disable-armv6t2        disable armv6t2 optimizations
330   --disable-vfp            disable VFP optimizations
331   --disable-neon           disable NEON optimizations
332   --disable-inline-asm     disable use of inline assembly
333   --disable-x86asm         disable use of standalone x86 assembly
334
335 Developer options (useful when working on Libav itself):
336   --disable-debug          disable debugging symbols
337   --enable-debug=LEVEL     set the debug level [$debuglevel]
338   --disable-optimizations  disable compiler optimizations
339   --enable-extra-warnings  enable more compiler warnings
340   --samples=PATH           location of test samples for FATE, if not set use
341                            \$LIBAV_SAMPLES at make invocation time.
342   --enable-neon-clobber-test check NEON registers for clobbering (should be
343                            used only for debugging purposes)
344   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
345                            should be used only for debugging purposes)
346   --disable-valgrind-backtrace do not print a backtrace under Valgrind
347                            (only applies to --disable-optimizations builds)
348   --ignore-tests=TESTS     comma-separated list (without "fate-" prefix
349                            in the name) of tests whose result is ignored
350
351 NOTE: Object files are built at the place where configure is launched.
352 EOF
353   exit 0
354 }
355
356 log(){
357     echo "$@" >> $logfile
358 }
359
360 log_file(){
361     log BEGIN $1
362     i=1
363     while read line; do
364         printf '%5s   %s\n' "${i}" "${line}"
365         i=$(($i+1))
366     done < $1 >> $logfile
367     log END $1
368 }
369
370 echolog(){
371     log "$@"
372     echo "$@"
373 }
374
375 warn(){
376     log "WARNING: $*"
377     WARNINGS="${WARNINGS}WARNING: $*\n"
378 }
379
380 die(){
381     echolog "$@"
382     cat <<EOF
383
384 If you think configure made a mistake, make sure you are using the latest
385 version from Git.  If the latest version fails, report the problem to the
386 libav-tools@libav.org mailing list or IRC #libav on irc.freenode.net.
387 EOF
388     if disabled logging; then
389         cat <<EOF
390 Rerun configure with logging enabled (do not use --disable-logging), and
391 include the log this produces with your report.
392 EOF
393     else
394         cat <<EOF
395 Include the log file "$logfile" produced by configure as this will help
396 solving the problem.
397 EOF
398     fi
399     exit 1
400 }
401
402 # Avoid locale weirdness, besides we really just want to translate ASCII.
403 toupper(){
404     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
405 }
406
407 tolower(){
408     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
409 }
410
411 c_escape(){
412     echo "$*" | sed 's/["\\]/\\\0/g'
413 }
414
415 sh_quote(){
416     v=$(echo "$1" | sed "s/'/'\\\\''/g")
417     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
418     echo "$v"
419 }
420
421 cleanws(){
422     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
423 }
424
425 filter(){
426     pat=$1
427     shift
428     for v; do
429         eval "case '$v' in $pat) printf '%s ' '$v' ;; esac"
430     done
431 }
432
433 filter_out(){
434     pat=$1
435     shift
436     for v; do
437         eval "case '$v' in $pat) ;; *) printf '%s ' '$v' ;; esac"
438     done
439 }
440
441 map(){
442     m=$1
443     shift
444     for v; do eval $m; done
445 }
446
447 add_suffix(){
448     suffix=$1
449     shift
450     for v; do echo ${v}${suffix}; done
451 }
452
453 set_all(){
454     value=$1
455     shift
456     for var in $*; do
457         eval $var=$value
458     done
459 }
460
461 set_weak(){
462     value=$1
463     shift
464     for var; do
465         eval : \${$var:=$value}
466     done
467 }
468
469 sanitize_var_name(){
470     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
471 }
472
473 set_sanitized(){
474     var=$1
475     shift
476     eval $(sanitize_var_name "$var")='$*'
477 }
478
479 get_sanitized(){
480     eval echo \$$(sanitize_var_name "$1")
481 }
482
483 pushvar(){
484     for pvar in $*; do
485         eval level=\${${pvar}_level:=0}
486         eval ${pvar}_${level}="\$$pvar"
487         eval ${pvar}_level=$(($level+1))
488     done
489 }
490
491 popvar(){
492     for pvar in $*; do
493         eval level=\${${pvar}_level:-0}
494         test $level = 0 && continue
495         eval level=$(($level-1))
496         eval $pvar="\${${pvar}_${level}}"
497         eval ${pvar}_level=$level
498         eval unset ${pvar}_${level}
499     done
500 }
501
502 enable(){
503     set_all yes $*
504 }
505
506 disable(){
507     set_all no $*
508 }
509
510 enable_weak(){
511     set_weak yes $*
512 }
513
514 disable_weak(){
515     set_weak no $*
516 }
517
518 enable_sanitized(){
519     for var; do
520         enable $(sanitize_var_name $var)
521     done
522 }
523
524 disable_sanitized(){
525     for var; do
526         disable $(sanitize_var_name $var)
527     done
528 }
529
530 do_enable_deep(){
531     for var; do
532         enabled $var && continue
533         eval sel="\$${var}_select"
534         eval sgs="\$${var}_suggest"
535         pushvar var sgs
536         enable_deep $sel
537         popvar sgs
538         enable_deep_weak $sgs
539         popvar var
540     done
541 }
542
543 enable_deep(){
544     do_enable_deep $*
545     enable $*
546 }
547
548 enable_deep_weak(){
549     for var; do
550         disabled $var && continue
551         pushvar var
552         do_enable_deep $var
553         popvar var
554         enable_weak $var
555     done
556 }
557
558 enabled(){
559     test "${1#!}" = "$1" && op="=" || op="!="
560     eval test "x\$${1#!}" $op "xyes"
561 }
562
563 disabled(){
564     test "${1#!}" = "$1" && op="=" || op="!="
565     eval test "x\$${1#!}" $op "xno"
566 }
567
568 enabled_all(){
569     for opt; do
570         enabled $opt || return 1
571     done
572 }
573
574 disabled_all(){
575     for opt; do
576         disabled $opt || return 1
577     done
578 }
579
580 enabled_any(){
581     for opt; do
582         enabled $opt && return 0
583     done
584 }
585
586 disabled_any(){
587     for opt; do
588         disabled $opt && return 0
589     done
590     return 1
591 }
592
593 set_default(){
594     for opt; do
595         eval : \${$opt:=\$${opt}_default}
596     done
597 }
598
599 is_in(){
600     value=$1
601     shift
602     for var in $*; do
603         [ $var = $value ] && return 0
604     done
605     return 1
606 }
607
608 check_deps(){
609     for cfg; do
610         enabled ${cfg}_checking && die "Circular dependency for $cfg."
611         disabled ${cfg}_checking && continue
612         enable ${cfg}_checking
613
614         eval dep_all="\$${cfg}_deps"
615         eval dep_any="\$${cfg}_deps_any"
616         eval dep_con="\$${cfg}_conflict"
617         eval dep_sel="\$${cfg}_select"
618         eval dep_sgs="\$${cfg}_suggest"
619         eval dep_ifa="\$${cfg}_if"
620         eval dep_ifn="\$${cfg}_if_any"
621
622         pushvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
623         check_deps $dep_all $dep_any $dep_con $dep_sel $dep_sgs $dep_ifa $dep_ifn
624         popvar cfg dep_all dep_any dep_con dep_sel dep_sgs dep_ifa dep_ifn
625
626         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
627         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
628         enabled_all  $dep_all || disable $cfg
629         enabled_any  $dep_any || disable $cfg
630         disabled_all $dep_con || disable $cfg
631         disabled_any $dep_sel && disable $cfg
632
633         enabled $cfg && enable_deep_weak $dep_sel $dep_sgs
634
635         for dep in $dep_all $dep_any $dep_sel $dep_sgs; do
636             # filter out library deps, these do not belong in extralibs
637             is_in $dep $LIBRARY_LIST && continue
638             enabled $dep && eval append ${cfg}_extralibs ${dep}_extralibs
639         done
640
641         disable ${cfg}_checking
642     done
643 }
644
645 print_config(){
646     pfx=$1
647     files=$2
648     shift 2
649     map 'eval echo "$v \${$v:-no}"' "$@" |
650     awk "BEGIN { split(\"$files\", files) }
651         {
652             c = \"$pfx\" toupper(\$1);
653             v = \$2;
654             sub(/yes/, 1, v);
655             sub(/no/,  0, v);
656             for (f in files) {
657                 file = files[f];
658                 if (file ~ /\\.h\$/) {
659                     printf(\"#define %s %d\\n\", c, v) >>file;
660                 } else if (file ~ /\\.asm\$/) {
661                     printf(\"%%define %s %d\\n\", c, v) >>file;
662                 } else if (file ~ /\\.mak\$/) {
663                     n = -v ? \"\" : \"!\";
664                     printf(\"%s%s=yes\\n\", n, c) >>file;
665                 }
666             }
667         }"
668 }
669
670 print_enabled(){
671     suf=$1
672     shift
673     for v; do
674         enabled $v && printf "%s\n" ${v%$suf}
675     done
676 }
677
678 append(){
679     var=$1
680     shift
681     eval "$var=\"\$$var $*\""
682 }
683
684 prepend(){
685     var=$1
686     shift
687     eval "$var=\"$* \$$var\""
688 }
689
690 unique(){
691     var=$1
692     uniq_list=""
693     for tok in $(eval echo \$$var); do
694         uniq_list="$(filter_out $tok $uniq_list) $tok"
695     done
696     eval "$var=\"${uniq_list}\""
697 }
698
699 resolve(){
700     var=$1
701     tmpvar=
702     for entry in $(eval echo \$$var); do
703         tmpvar="$tmpvar $(eval echo \$${entry})"
704     done
705     eval "$var=\"${tmpvar}\""
706 }
707
708 add_cppflags(){
709     append CPPFLAGS "$@"
710 }
711
712 add_cflags(){
713     append CFLAGS $($cflags_filter "$@")
714 }
715
716 add_cflags_headers(){
717     append CFLAGS_HEADERS $($cflags_filter "$@")
718 }
719
720 add_asflags(){
721     append ASFLAGS $($asflags_filter "$@")
722 }
723
724 add_objcflags(){
725     append OBJCFLAGS $($objcflags_filter "$@")
726 }
727
728 add_ldflags(){
729     append LDFLAGS $($ldflags_filter "$@")
730 }
731
732 add_ldexeflags(){
733     append LDEXEFLAGS $($ldflags_filter "$@")
734 }
735
736 add_ldsoflags(){
737     append LDSOFLAGS $($ldflags_filter "$@")
738 }
739
740 add_stripflags(){
741     append STRIPFLAGS "$@"
742 }
743
744 add_extralibs(){
745     prepend extralibs $($ldflags_filter "$@")
746 }
747
748 add_host_cppflags(){
749     append host_cppflags "$@"
750 }
751
752 add_host_cflags(){
753     append host_cflags $($host_cflags_filter "$@")
754 }
755
756 add_host_ldflags(){
757     append host_ldflags $($host_ldflags_filter "$@")
758 }
759
760 add_compat(){
761     append compat_objs $1
762     shift
763     map 'add_cppflags -D$v' "$@"
764 }
765
766 test_cmd(){
767     log "$@"
768     "$@" >> $logfile 2>&1
769 }
770
771 cc_o(){
772     eval printf '%s\\n' $CC_O
773 }
774
775 cc_e(){
776     eval printf '%s\\n' $CC_E
777 }
778
779 test_cc(){
780     log test_cc "$@"
781     cat > $TMPC
782     log_file $TMPC
783     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
784 }
785
786 test_objcc(){
787     log test_objcc "$@"
788     cat > $TMPC
789     log_file $TMPC
790     test_cmd $objcc $CPPFLAGS $CFLAGS $OBJCFLAGS "$@" $OBJCC_C $(cc_o $TMPO) $TMPC
791 }
792
793 test_cpp(){
794     log test_cpp "$@"
795     cat > $TMPC
796     log_file $TMPC
797     test_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
798 }
799
800 as_o(){
801     eval printf '%s\\n' $AS_O
802 }
803
804 test_as(){
805     log test_as "$@"
806     cat > $TMPS
807     log_file $TMPS
808     test_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
809 }
810
811 check_cmd(){
812     log check_cmd "$@"
813     cmd=$1
814     disabled $cmd && return
815     disable $cmd
816     test_cmd $@ && enable $cmd
817 }
818
819 check_as(){
820     log check_as "$@"
821     name=$1
822     code=$2
823     shift 2
824     disable $name
825     test_as $@ <<EOF && enable $name
826 $code
827 EOF
828 }
829
830 check_inline_asm(){
831     log check_inline_asm "$@"
832     name="$1"
833     code="$2"
834     shift 2
835     disable $name
836     test_cc "$@" <<EOF && enable $name
837 void foo(void){ __asm__ volatile($code); }
838 EOF
839 }
840
841 check_insn(){
842     log check_insn "$@"
843     check_inline_asm ${1}_inline "$2"
844     check_as ${1}_external "$2"
845 }
846
847 x86asm_o(){
848     eval printf '%s\\n' $X86ASM_O
849 }
850
851 test_x86asm(){
852     log test_x86asm "$@"
853     echo "$1" > $TMPASM
854     log_file $TMPASM
855     shift 1
856     test_cmd $x86asmexe $X86ASMFLAGS "$@" $(x86asm_o $TMPO) $TMPASM
857 }
858
859 ld_o(){
860     eval printf '%s\\n' $LD_O
861 }
862
863 test_ld(){
864     log test_ld "$@"
865     flags=$(filter_out '-l*' "$@")
866     libs=$(filter '-l*' "$@")
867     test_cc $($cflags_filter $flags) || return
868     flags=$($ldflags_filter $flags)
869     libs=$($ldflags_filter $libs)
870     test_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
871 }
872
873 check_ld(){
874     log check_ld "$@"
875     name=$1
876     shift
877     disable $name
878     test_ld $@ && enable $name
879 }
880
881 print_include(){
882     hdr=$1
883     test "${hdr%.h}" = "${hdr}" &&
884         echo "#include $hdr"    ||
885         echo "#include <$hdr>"
886 }
887
888 test_code(){
889     log test_code "$@"
890     check=$1
891     headers=$2
892     code=$3
893     shift 3
894     {
895         for hdr in $headers; do
896             print_include $hdr
897         done
898         echo "int main(void) { $code; return 0; }"
899     } | test_$check "$@"
900 }
901
902 check_cppflags(){
903     log check_cppflags "$@"
904     test_cpp "$@" <<EOF && add_cppflags "$@"
905 #include <stdlib.h>;
906 EOF
907 }
908
909 test_cflags(){
910     log test_cflags "$@"
911     set -- $($cflags_filter "$@")
912     test_cc "$@" <<EOF
913 int x;
914 EOF
915 }
916
917 check_cflags(){
918     log check_cflags "$@"
919     test_cflags "$@" && add_cflags "$@"
920 }
921
922 test_objcflags(){
923     log test_objcflags "$@"
924     set -- $($objcflags_filter "$@")
925     test_objcc "$@" <<EOF
926 int x;
927 EOF
928 }
929
930 check_objcflags(){
931     log check_objcflags "$@"
932     test_objcflags "$@" && add_objcflags "$@"
933 }
934
935 test_ldflags(){
936     log test_ldflags "$@"
937     set -- $($ldflags_filter "$@")
938     test_ld "$@" <<EOF
939 int main(void){ return 0; }
940 EOF
941 }
942
943 check_ldflags(){
944     log check_ldflags "$@"
945     test_ldflags "$@" && add_ldflags "$@"
946 }
947
948 test_stripflags(){
949     log test_stripflags "$@"
950     # call test_cc to get a fresh TMPO
951     test_cc <<EOF
952 int main(void) { return 0; }
953 EOF
954     test_cmd $strip $STRIPFLAGS "$@" $TMPO
955 }
956
957 check_stripflags(){
958     log check_stripflags "$@"
959     test_stripflags "$@" && add_stripflags "$@"
960 }
961
962 check_header(){
963     log check_header "$@"
964     headers=$1
965     shift
966     disable_sanitized $headers
967     {
968         for hdr in $headers; do
969             print_include $hdr
970         done
971         echo "int x;"
972     } | test_cpp "$@" && enable_sanitized $headers
973 }
974
975 check_func(){
976     log check_func "$@"
977     func=$1
978     shift
979     disable $func
980     test_ld "$@" <<EOF && enable $func
981 extern int $func();
982 int main(void){ $func(); }
983 EOF
984 }
985
986 check_mathfunc(){
987     log check_mathfunc "$@"
988     func=$1
989     narg=$2
990     shift 2
991     test $narg = 2 && args="f, g" || args="f"
992     disable $func
993     test_ld "$@" <<EOF && enable $func
994 #include <math.h>
995 float foo(float f, float g) { return $func($args); }
996 int main(void){ return 0; }
997 EOF
998 }
999
1000 check_func_headers(){
1001     log check_func_headers "$@"
1002     headers=$1
1003     funcs=$2
1004     shift 2
1005     {
1006         for hdr in $headers; do
1007             print_include $hdr
1008         done
1009         for func in $funcs; do
1010             echo "long check_$func(void) { return (long) $func; }"
1011         done
1012         echo "int main(void) { return 0; }"
1013     } | test_ld "$@" && enable $funcs && enable_sanitized $headers
1014 }
1015
1016 test_cpp_condition(){
1017     log test_cpp_condition "$@"
1018     header=$1
1019     condition=$2
1020     shift 2
1021     test_cpp "$@" <<EOF
1022 #include <$header>
1023 #if !($condition)
1024 #error "unsatisfied condition: $condition"
1025 #endif
1026 EOF
1027 }
1028
1029 check_cpp_condition(){
1030     log check_cpp_condition "$@"
1031     name=$1
1032     shift 1
1033     disable $name
1034     test_cpp_condition "$@" && enable $name
1035 }
1036
1037 test_cflags_cpp(){
1038     log test_cflags_cpp "$@"
1039     flags=$1
1040     condition=$2
1041     shift 2
1042     set -- $($cflags_filter "$flags")
1043     test_cpp "$@" <<EOF
1044 #if !($condition)
1045 #error "unsatisfied condition: $condition"
1046 #endif
1047 EOF
1048 }
1049
1050 check_lib(){
1051     log check_lib "$@"
1052     name="$1"
1053     headers="$2"
1054     funcs="$3"
1055     shift 3
1056     disable $name
1057     check_func_headers "$headers" "$funcs" "$@" &&
1058         enable $name && eval ${name}_extralibs="\$@"
1059 }
1060
1061 test_pkg_config(){
1062     log test_pkg_config "$@"
1063     name="$1"
1064     pkg_version="$2"
1065     pkg="${2%% *}"
1066     headers="$3"
1067     funcs="$4"
1068     shift 4
1069     disable $name
1070     test_cmd $pkg_config --exists --print-errors $pkg_version || return
1071     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1072     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1073     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1074         enable $name &&
1075         set_sanitized "${name}_cflags"    $pkg_cflags &&
1076         set_sanitized "${name}_extralibs" $pkg_libs
1077 }
1078
1079 check_pkg_config(){
1080     log check_pkg_config "$@"
1081     name="$1"
1082     test_pkg_config "$@" &&
1083         eval add_cflags \$${name}_cflags
1084 }
1085
1086 test_exec(){
1087     log test_exec "$@"
1088     test_ld "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1089 }
1090
1091 check_exec_crash(){
1092     log check_exec_crash "$@"
1093     code=$(cat)
1094
1095     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1096     # are safe but may not be available everywhere.  Thus we use
1097     # raise(SIGTERM) instead.  The check is run in a subshell so we
1098     # can redirect the "Terminated" message from the shell.  SIGBUS
1099     # is not defined by standard C so it is used conditionally.
1100
1101     (test_exec "$@") >> $logfile 2>&1 <<EOF
1102 #include <signal.h>
1103 static void sighandler(int sig){
1104     raise(SIGTERM);
1105 }
1106 int foo(void){
1107     $code
1108 }
1109 int (*func_ptr)(void) = foo;
1110 int main(void){
1111     signal(SIGILL, sighandler);
1112     signal(SIGFPE, sighandler);
1113     signal(SIGSEGV, sighandler);
1114 #ifdef SIGBUS
1115     signal(SIGBUS, sighandler);
1116 #endif
1117     return func_ptr();
1118 }
1119 EOF
1120 }
1121
1122 check_type(){
1123     log check_type "$@"
1124     headers=$1
1125     type=$2
1126     shift 2
1127     disable_sanitized "$type"
1128     test_code cc "$headers" "$type v" "$@" && enable_sanitized "$type"
1129 }
1130
1131 check_struct(){
1132     log check_struct "$@"
1133     headers=$1
1134     struct=$2
1135     member=$3
1136     shift 3
1137     disable_sanitized "${struct}_${member}"
1138     test_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1139         enable_sanitized "${struct}_${member}"
1140 }
1141
1142 check_builtin(){
1143     log check_builtin "$@"
1144     name=$1
1145     shift
1146     disable "$name"
1147     test_code ld "$@" && enable "$name"
1148 }
1149
1150 check_compile_assert(){
1151     log check_compile_assert "$@"
1152     name=$1
1153     headers=$2
1154     condition=$3
1155     shift 3
1156     disable "$name"
1157     test_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1158 }
1159
1160 check_cc(){
1161     log check_cc "$@"
1162     name=$1
1163     shift
1164     disable "$name"
1165     test_code cc "$@" && enable "$name"
1166 }
1167
1168 require(){
1169     log require "$@"
1170     name_version="$1"
1171     name="${1%% *}"
1172     shift
1173     check_lib $name "$@" || die "ERROR: $name_version not found"
1174 }
1175
1176 require_cc(){
1177     log require_cc "$@"
1178     name="$1"
1179     shift
1180     test_code cc "$@" || die "ERROR: $name failed"
1181 }
1182
1183 require_header(){
1184     log require_header "$@"
1185     headers="$1"
1186     check_header "$@" || die "ERROR: $headers not found"
1187 }
1188
1189 require_cpp_condition(){
1190     log require_cpp_condition "$@"
1191     condition="$2"
1192     test_cpp_condition "$@" || die "ERROR: $condition not satisfied"
1193 }
1194
1195 require_pkg_config(){
1196     log require_pkg_config "$@"
1197     pkg_version="$2"
1198     check_pkg_config "$@" || die "ERROR: $pkg_version not found"
1199 }
1200
1201 hostcc_e(){
1202     eval printf '%s\\n' $HOSTCC_E
1203 }
1204
1205 hostcc_o(){
1206     eval printf '%s\\n' $HOSTCC_O
1207 }
1208
1209 test_host_cc(){
1210     log test_host_cc "$@"
1211     cat > $TMPC
1212     log_file $TMPC
1213     test_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1214 }
1215
1216 test_host_cpp(){
1217     log test_host_cpp "$@"
1218     cat > $TMPC
1219     log_file $TMPC
1220     test_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1221 }
1222
1223 check_host_cppflags(){
1224     log check_host_cppflags "$@"
1225     test_host_cpp "$@" <<EOF && append host_cppflags "$@"
1226 #include <stdlib.h>;
1227 EOF
1228 }
1229
1230 check_host_cflags(){
1231     log check_host_cflags "$@"
1232     set -- $($host_cflags_filter "$@")
1233     test_host_cc "$@" <<EOF && append host_cflags "$@"
1234 int x;
1235 EOF
1236 }
1237
1238 test_host_cpp_condition(){
1239     log test_host_cpp_condition "$@"
1240     header=$1
1241     condition=$2
1242     shift 2
1243     test_host_cpp "$@" <<EOF
1244 #include <$header>
1245 #if !($condition)
1246 #error "unsatisfied condition: $condition"
1247 #endif
1248 EOF
1249 }
1250
1251 check_host_cpp_condition(){
1252     log check_host_cpp_condition "$@"
1253     name=$1
1254     shift 1
1255     disable $name
1256     test_host_cpp_condition "$@" && enable $name
1257 }
1258
1259 cp_if_changed(){
1260     cmp -s "$1" "$2" && { test "$quiet" != "yes" && echo "$2 is unchanged"; } && return
1261     mkdir -p "$(dirname $2)"
1262     cp -f "$1" "$2"
1263 }
1264
1265 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1266 # system-dependent things.
1267
1268 AVCODEC_COMPONENTS="
1269     bsfs
1270     decoders
1271     encoders
1272     hwaccels
1273     parsers
1274 "
1275
1276 AVDEVICE_COMPONENTS="
1277     indevs
1278 "
1279 AVFILTER_COMPONENTS="
1280     filters
1281 "
1282 AVFORMAT_COMPONENTS="
1283     demuxers
1284     muxers
1285     protocols
1286 "
1287
1288 COMPONENT_LIST="
1289     $AVCODEC_COMPONENTS
1290     $AVDEVICE_COMPONENTS
1291     $AVFILTER_COMPONENTS
1292     $AVFORMAT_COMPONENTS
1293 "
1294
1295 EXAMPLE_LIST="
1296     decode_audio_example
1297     decode_video_example
1298     encode_audio_example
1299     encode_video_example
1300     filter_audio_example
1301     metadata_example
1302     output_example
1303     qsvdec_example
1304     transcode_aac_example
1305 "
1306
1307 # catchall list of things that require external libs to link
1308 EXTRALIBS_LIST="
1309     cpu_init
1310     cws2fws
1311 "
1312
1313 HWACCEL_LIBRARY_NONFREE_LIST="
1314     cuda
1315     cuvid
1316     libnpp
1317 "
1318 HWACCEL_LIBRARY_LIST="
1319     $HWACCEL_LIBRARY_NONFREE_LIST
1320     amf
1321     d3d11va
1322     dxva2
1323     libmfx
1324     mmal
1325     nvenc
1326     omx
1327     vaapi
1328     vda
1329     vdpau
1330 "
1331
1332 EXTERNAL_LIBRARY_GPL_LIST="
1333     libcdio
1334     libx264
1335     libx265
1336     libxavs
1337     libxvid
1338 "
1339
1340 EXTERNAL_LIBRARY_NONFREE_LIST="
1341     libfaac
1342     libfdk_aac
1343     openssl
1344 "
1345
1346 EXTERNAL_LIBRARY_VERSION3_LIST="
1347     libopencore_amrnb
1348     libopencore_amrwb
1349     libvo_aacenc
1350     libvo_amrwbenc
1351 "
1352
1353 EXTERNAL_LIBRARY_LIST="
1354     $EXTERNAL_LIBRARY_GPL_LIST
1355     $EXTERNAL_LIBRARY_NONFREE_LIST
1356     $EXTERNAL_LIBRARY_VERSION3_LIST
1357     avisynth
1358     avxsynth
1359     frei0r
1360     gnutls
1361     libaom
1362     libbs2b
1363     libdc1394
1364     libdcadec
1365     libfontconfig
1366     libfreetype
1367     libgsm
1368     libhdcd
1369     libilbc
1370     libjack
1371     libkvazaar
1372     libmp3lame
1373     libopencv
1374     libopenh264
1375     libopenjpeg
1376     libopus
1377     libpulse
1378     librtmp
1379     libschroedinger
1380     libsnappy
1381     libspeex
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     sdl
1710     vaapi_1
1711     vaapi_drm
1712     vaapi_x11
1713     vdpau_x11
1714     wincrypt
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     CONDITION_VARIABLE_Ptr
1739     CUVIDDECODECREATEINFO_bitDepthMinus8
1740     socklen_t
1741     struct_addrinfo
1742     struct_group_source_req
1743     struct_ip_mreq_source
1744     struct_ipv6_mreq
1745     struct_pollfd
1746     struct_rusage_ru_maxrss
1747     struct_sockaddr_in6
1748     struct_sockaddr_sa_len
1749     struct_sockaddr_storage
1750     struct_v4l2_frmivalenum_discrete
1751 "
1752
1753 HAVE_LIST="
1754     $ARCH_EXT_LIST
1755     $(add_suffix _external $ARCH_EXT_LIST)
1756     $(add_suffix _inline   $ARCH_EXT_LIST)
1757     $ARCH_FEATURES
1758     $BUILTIN_LIST
1759     $HAVE_LIST_CMDLINE
1760     $HAVE_LIST_PUB
1761     $HEADERS_LIST
1762     $INTRINSICS_LIST
1763     $MATH_FUNCS
1764     $SYSTEM_FEATURES
1765     $SYSTEM_FUNCS
1766     $SYSTEM_LIBRARIES
1767     $THREADS_LIST
1768     $TOOLCHAIN_FEATURES
1769     $TYPES_LIST
1770 "
1771
1772 # options emitted with CONFIG_ prefix but not available on the command line
1773 CONFIG_EXTRA="
1774     aandcttables
1775     ac3dsp
1776     adts_header
1777     audio_frame_queue
1778     audiodsp
1779     blockdsp
1780     bswapdsp
1781     cabac
1782     cbs
1783     cbs_h264
1784     cbs_h265
1785     cbs_mpeg2
1786     dirac_parse
1787     dvprofile
1788     faandct
1789     faanidct
1790     fdctdsp
1791     flacdsp
1792     fmtconvert
1793     g722dsp
1794     gmp
1795     golomb
1796     gplv3
1797     h263dsp
1798     h264chroma
1799     h264dsp
1800     h264parse
1801     h264pred
1802     h264qpel
1803     hevcparse
1804     hpeldsp
1805     huffman
1806     huffyuvdsp
1807     huffyuvencdsp
1808     idctdsp
1809     iirfilter
1810     imdct15
1811     intrax8
1812     iso_media
1813     ividsp
1814     jpegtables
1815     lgplv3
1816     libx262
1817     libxcb_shape
1818     lpc
1819     lzf
1820     me_cmp
1821     mpeg_er
1822     mpegaudio
1823     mpegaudiodsp
1824     mpegaudioheader
1825     mpegvideo
1826     mpegvideoenc
1827     mss34dsp
1828     pixblockdsp
1829     qpeldsp
1830     qsv
1831     qsvdec
1832     qsvenc
1833     qsvvpp
1834     rangecoder
1835     riffdec
1836     riffenc
1837     rtpdec
1838     rtpenc_chain
1839     rv34dsp
1840     sinewin
1841     snappy
1842     srtp
1843     startcode
1844     texturedsp
1845     texturedspenc
1846     tpeldsp
1847     vaapi_encode
1848     vc1dsp
1849     videodsp
1850     vp3dsp
1851     vp56dsp
1852     vp8dsp
1853     wma_freqs
1854     wmv2dsp
1855 "
1856
1857 CMDLINE_SELECT="
1858     $ARCH_EXT_LIST
1859     $CONFIG_LIST
1860     $HAVE_LIST_CMDLINE
1861     $THREADS_LIST
1862     asm
1863     cross_compile
1864     debug
1865     extra_warnings
1866     logging
1867     lto
1868     optimizations
1869     rpath
1870 "
1871
1872 PATHS_LIST="
1873     bindir
1874     datadir
1875     docdir
1876     incdir
1877     libdir
1878     mandir
1879     prefix
1880     shlibdir
1881 "
1882
1883 CMDLINE_SET="
1884     $PATHS_LIST
1885     ar
1886     arch
1887     as
1888     cc
1889     objcc
1890     cpu
1891     cross_prefix
1892     custom_allocator
1893     dep_cc
1894     env
1895     extra_version
1896     host_cc
1897     host_cflags
1898     host_extralibs
1899     host_ld
1900     host_ldflags
1901     host_os
1902     ignore_tests
1903     ld
1904     logfile
1905     malloc_prefix
1906     nm
1907     optflags
1908     pkg_config
1909     pkg_config_flags
1910     samples
1911     sysinclude
1912     sysroot
1913     target_exec
1914     target_os
1915     target_path
1916     target_samples
1917     toolchain
1918     x86asmexe
1919 "
1920
1921 CMDLINE_APPEND="
1922     extra_cflags
1923     extra_objcflags
1924     host_cppflags
1925 "
1926
1927 # code dependency declarations
1928
1929 # architecture extensions
1930
1931 armv5te_deps="arm"
1932 armv6_deps="arm"
1933 armv6t2_deps="arm"
1934 armv8_deps="aarch64"
1935 neon_deps_any="aarch64 arm"
1936 intrinsics_neon_deps="neon"
1937 vfp_deps_any="aarch64 arm"
1938 vfpv3_deps="vfp"
1939
1940 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1941
1942 altivec_deps="ppc"
1943 dcbzl_deps="ppc"
1944 ldbrx_deps="ppc"
1945 ppc4xx_deps="ppc"
1946 vsx_deps="altivec"
1947 power8_deps="vsx"
1948
1949 loongson_deps="mips"
1950 mips32r1_deps="mips32"
1951 mips32r2_deps="mips32"
1952 mips32r6_deps="mips32"
1953 mips64r1_deps="mips64"
1954 mips64r2_deps="mips64"
1955 mips64r6_deps="mips64"
1956
1957 vis_deps="sparc"
1958
1959 cpunop_deps="i686"
1960 x86_64_select="i686"
1961 x86_64_suggest="fast_cmov"
1962
1963 amd3dnow_deps="mmx"
1964 amd3dnowext_deps="amd3dnow"
1965 i686_deps="x86"
1966 mmx_deps="x86"
1967 mmxext_deps="mmx"
1968 sse_deps="mmxext"
1969 sse2_deps="sse"
1970 sse3_deps="sse2"
1971 ssse3_deps="sse3"
1972 sse4_deps="ssse3"
1973 sse42_deps="sse4"
1974 avx_deps="sse42"
1975 xop_deps="avx"
1976 fma3_deps="avx"
1977 fma4_deps="avx"
1978 avx2_deps="avx"
1979
1980 mmx_external_deps="x86asm"
1981 mmx_inline_deps="inline_asm x86"
1982 mmx_suggest="mmx_external mmx_inline"
1983
1984 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1985     eval dep=\$${ext}_deps
1986     eval ${ext}_external_deps='"${dep}_external"'
1987     eval ${ext}_inline_deps='"${dep}_inline"'
1988     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1989 done
1990
1991 aligned_stack_if_any="aarch64 ppc x86"
1992 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1993 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1994 fast_unaligned_if_any="aarch64 ppc x86"
1995 simd_align_16_if_any="altivec neon sse"
1996 simd_align_32_if_any="avx"
1997
1998 # system capabilities
1999 symver_if_any="symver_asm_label symver_gnu_asm"
2000 valgrind_backtrace_conflict="optimizations"
2001 valgrind_backtrace_deps="valgrind_valgrind_h"
2002
2003 # threading support
2004 atomics_gcc_if="sync_val_compare_and_swap"
2005 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2006 atomics_win32_if="MemoryBarrier"
2007 atomics_native_if_any="$ATOMICS_LIST"
2008 w32threads_deps="atomics_native"
2009 threads_if_any="$THREADS_LIST"
2010
2011 # subsystems
2012 cbs_h264_select="cbs golomb"
2013 cbs_h265_select="cbs golomb"
2014 cbs_mpeg2_select="cbs"
2015 dct_select="rdft"
2016 dirac_parse_select="golomb"
2017 error_resilience_select="me_cmp"
2018 faandct_deps="faan"
2019 faandct_select="fdctdsp"
2020 faanidct_deps="faan"
2021 faanidct_select="idctdsp"
2022 h264dsp_select="startcode"
2023 hevcparse_select="golomb"
2024 intrax8_select="blockdsp idctdsp"
2025 mdct_select="fft"
2026 rdft_select="fft"
2027 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2028 mpeg_er_select="error_resilience"
2029 mpegaudio_select="mpegaudiodsp mpegaudioheader"
2030 mpegaudiodsp_select="dct"
2031 mpegvideo_select="blockdsp hpeldsp idctdsp me_cmp mpeg_er videodsp"
2032 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2033 vc1dsp_select="h264chroma qpeldsp startcode"
2034
2035 # decoders / encoders
2036 aac_decoder_select="adts_header imdct15 mdct sinewin"
2037 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2038 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2039 ac3_decoder_select="ac3_parser ac3dsp bswapdsp fmtconvert mdct"
2040 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2041 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2042 adpcm_g722_decoder_select="g722dsp"
2043 adpcm_g722_encoder_select="g722dsp"
2044 aic_decoder_select="golomb idctdsp"
2045 alac_encoder_select="lpc"
2046 als_decoder_select="bswapdsp"
2047 amrnb_decoder_select="lsp"
2048 amrwb_decoder_select="lsp"
2049 amv_decoder_select="sp5x_decoder"
2050 ape_decoder_select="bswapdsp"
2051 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2052 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2053 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2054 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2055 atrac1_decoder_select="mdct sinewin"
2056 atrac3_decoder_select="mdct"
2057 atrac3p_decoder_select="mdct sinewin"
2058 bink_decoder_select="blockdsp hpeldsp"
2059 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2060 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2061 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2062 clearvideo_decoder_select="idctdsp"
2063 cllc_decoder_select="bswapdsp"
2064 comfortnoise_encoder_select="lpc"
2065 cook_decoder_select="audiodsp mdct sinewin"
2066 cscd_decoder_select="lzo"
2067 cscd_decoder_suggest="zlib"
2068 dca_decoder_select="fmtconvert mdct"
2069 dds_decoder_select="texturedsp"
2070 dnxhd_decoder_select="blockdsp idctdsp"
2071 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2072 dvvideo_decoder_select="dvprofile idctdsp"
2073 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2074 dxa_decoder_deps="zlib"
2075 dxv_decoder_select="lzf texturedsp"
2076 eac3_decoder_select="ac3_decoder"
2077 eac3_encoder_select="ac3_encoder"
2078 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2079 eatgq_decoder_select="aandcttables idctdsp"
2080 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp"
2081 exr_decoder_deps="zlib"
2082 ffv1_decoder_select="rangecoder"
2083 ffv1_encoder_select="rangecoder"
2084 ffvhuff_decoder_select="huffyuv_decoder"
2085 ffvhuff_encoder_select="huffyuv_encoder"
2086 fic_decoder_select="golomb"
2087 flac_decoder_select="flacdsp"
2088 flac_encoder_select="bswapdsp flacdsp lpc"
2089 flashsv_decoder_deps="zlib"
2090 flashsv_encoder_deps="zlib"
2091 flashsv2_decoder_deps="zlib"
2092 flv_decoder_select="h263_decoder"
2093 flv_encoder_select="h263_encoder"
2094 fourxm_decoder_select="blockdsp bswapdsp"
2095 fraps_decoder_select="bswapdsp huffman"
2096 g2m_decoder_deps="zlib"
2097 g2m_decoder_select="blockdsp idctdsp jpegtables"
2098 h261_decoder_select="mpeg_er mpegvideo"
2099 h261_encoder_select="aandcttables mpegvideoenc"
2100 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2101 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2102 h263i_decoder_select="h263_decoder"
2103 h263p_encoder_select="h263_encoder"
2104 h264_decoder_select="cabac golomb h264chroma h264dsp h264parse h264pred h264qpel videodsp"
2105 h264_decoder_suggest="error_resilience"
2106 hap_decoder_select="snappy texturedsp"
2107 hap_encoder_deps="libsnappy"
2108 hap_encoder_select="texturedspenc"
2109 hevc_decoder_select="bswapdsp cabac hevcparse videodsp"
2110 huffyuv_decoder_select="bswapdsp huffyuvdsp"
2111 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp"
2112 iac_decoder_select="imc_decoder"
2113 imc_decoder_select="bswapdsp fft mdct sinewin"
2114 indeo3_decoder_select="hpeldsp"
2115 indeo4_decoder_select="ividsp"
2116 indeo5_decoder_select="ividsp"
2117 interplay_video_decoder_select="hpeldsp"
2118 jpegls_decoder_select="mjpeg_decoder"
2119 jv_decoder_select="blockdsp"
2120 lagarith_decoder_select="huffyuvdsp"
2121 ljpeg_encoder_select="aandcttables idctdsp jpegtables"
2122 magicyuv_decoder_select="huffyuvdsp"
2123 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2124 metasound_decoder_select="lsp mdct sinewin"
2125 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2126 mjpeg_decoder_select="blockdsp hpeldsp idctdsp jpegtables"
2127 mjpeg_encoder_select="aandcttables jpegtables mpegvideoenc"
2128 mjpegb_decoder_select="mjpeg_decoder"
2129 mlp_decoder_select="mlp_parser"
2130 motionpixels_decoder_select="bswapdsp"
2131 mp1_decoder_select="mpegaudio"
2132 mp1float_decoder_select="mpegaudio"
2133 mp2_decoder_select="mpegaudio"
2134 mp2float_decoder_select="mpegaudio"
2135 mp3_decoder_select="mpegaudio"
2136 mp3adu_decoder_select="mpegaudio"
2137 mp3adufloat_decoder_select="mpegaudio"
2138 mp3float_decoder_select="mpegaudio"
2139 mp3on4_decoder_select="mpegaudio"
2140 mp3on4float_decoder_select="mpegaudio"
2141 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2142 mpc8_decoder_select="mpegaudiodsp"
2143 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2144 mpeg1video_encoder_select="aandcttables mpegvideoenc"
2145 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2146 mpeg2video_encoder_select="aandcttables mpegvideoenc"
2147 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2148 mpeg4_encoder_select="h263_encoder"
2149 msa1_decoder_select="mss34dsp"
2150 msmpeg4v1_decoder_select="h263_decoder"
2151 msmpeg4v2_decoder_select="h263_decoder"
2152 msmpeg4v2_encoder_select="h263_encoder"
2153 msmpeg4v3_decoder_select="h263_decoder"
2154 msmpeg4v3_encoder_select="h263_encoder"
2155 mss2_decoder_select="error_resilience mpeg_er mpegvideo qpeldsp vc1_decoder"
2156 mts2_decoder_select="mss34dsp"
2157 mxpeg_decoder_select="mjpeg_decoder"
2158 nellymoser_decoder_select="mdct sinewin"
2159 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2160 nuv_decoder_select="idctdsp lzo"
2161 on2avc_decoder_select="mdct"
2162 opus_decoder_deps="avresample"
2163 opus_decoder_select="imdct15"
2164 png_decoder_deps="zlib"
2165 png_encoder_deps="zlib"
2166 png_encoder_select="huffyuvencdsp"
2167 prores_decoder_select="idctdsp"
2168 prores_encoder_select="fdctdsp"
2169 qcelp_decoder_select="lsp"
2170 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2171 ra_144_encoder_select="audio_frame_queue lpc"
2172 ralf_decoder_select="golomb"
2173 rscc_decoder_deps="zlib"
2174 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2175 rv10_encoder_select="h263_encoder"
2176 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2177 rv20_encoder_select="h263_encoder"
2178 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2179 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo rv34dsp videodsp"
2180 screenpresso_decoder_deps="zlib"
2181 sipr_decoder_select="lsp"
2182 sp5x_decoder_select="mjpeg_decoder"
2183 svq1_decoder_select="hpeldsp"
2184 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2185 svq3_decoder_select="golomb h264dsp h264parse h264pred hpeldsp tpeldsp videodsp"
2186 svq3_decoder_suggest="zlib"
2187 tak_decoder_select="audiodsp"
2188 tdsc_decoder_deps="zlib"
2189 tdsc_decoder_select="mjpeg_decoder"
2190 theora_decoder_select="vp3_decoder"
2191 thp_decoder_select="mjpeg_decoder"
2192 tiff_decoder_suggest="zlib"
2193 tiff_encoder_suggest="zlib"
2194 truehd_decoder_select="mlp_decoder"
2195 truemotion2_decoder_select="bswapdsp"
2196 truespeech_decoder_select="bswapdsp"
2197 tscc_decoder_deps="zlib"
2198 txd_decoder_select="texturedsp"
2199 twinvq_decoder_select="mdct lsp sinewin"
2200 utvideo_decoder_select="bswapdsp huffyuvdsp"
2201 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2202 vble_decoder_select="huffyuvdsp"
2203 vc1_decoder_select="blockdsp error_resilience h263_decoder h264qpel intrax8 mpeg_er mpegvideo vc1dsp"
2204 vc1image_decoder_select="vc1_decoder"
2205 vorbis_decoder_select="mdct"
2206 vorbis_encoder_select="mdct"
2207 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2208 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp vp56dsp"
2209 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp vp56dsp"
2210 vp6a_decoder_select="vp6_decoder"
2211 vp6f_decoder_select="vp6_decoder"
2212 vp7_decoder_select="h264pred videodsp vp8dsp"
2213 vp8_decoder_select="h264pred videodsp vp8dsp"
2214 vp9_decoder_select="videodsp vp9_superframe_split_bsf"
2215 webp_decoder_select="vp8_decoder"
2216 wmapro_decoder_select="mdct sinewin wma_freqs"
2217 wmav1_decoder_select="mdct sinewin wma_freqs"
2218 wmav1_encoder_select="mdct sinewin wma_freqs"
2219 wmav2_decoder_select="mdct sinewin wma_freqs"
2220 wmav2_encoder_select="mdct sinewin wma_freqs"
2221 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2222 wmv1_decoder_select="h263_decoder"
2223 wmv1_encoder_select="h263_encoder"
2224 wmv2_decoder_select="blockdsp error_resilience h263_decoder idctdsp intrax8 videodsp wmv2dsp"
2225 wmv2_encoder_select="h263_encoder wmv2dsp"
2226 wmv3_decoder_select="vc1_decoder"
2227 wmv3image_decoder_select="wmv3_decoder"
2228 zerocodec_decoder_deps="zlib"
2229 zlib_decoder_deps="zlib"
2230 zlib_encoder_deps="zlib"
2231 zmbv_decoder_deps="zlib"
2232 zmbv_encoder_deps="zlib"
2233
2234 # hardware accelerators
2235 d3d11va_deps="dxva_h ID3D11VideoDecoder"
2236 dxva2_deps="dxva2api_h DXVA2_ConfigPictureDecode ole32"
2237 vda_deps="VideoDecodeAcceleration_VDADecoder_h blocks_extension pthreads"
2238 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2239
2240 h263_vaapi_hwaccel_deps="vaapi"
2241 h263_vaapi_hwaccel_select="h263_decoder"
2242 h264_cuvid_hwaccel_deps="cuvid CUVIDH264PICPARAMS"
2243 h264_cuvid_hwaccel_select="h264_decoder"
2244 h264_d3d11va_hwaccel_deps="d3d11va"
2245 h264_d3d11va_hwaccel_select="h264_decoder"
2246 h264_d3d11va2_hwaccel_deps="d3d11va"
2247 h264_d3d11va2_hwaccel_select="h264_decoder"
2248 h264_dxva2_hwaccel_deps="dxva2"
2249 h264_dxva2_hwaccel_select="h264_decoder"
2250 h264_vaapi_hwaccel_deps="vaapi"
2251 h264_vaapi_hwaccel_select="h264_decoder"
2252 h264_vda_hwaccel_deps="vda"
2253 h264_vda_hwaccel_select="h264_decoder"
2254 h264_vda_old_hwaccel_deps="vda"
2255 h264_vda_old_hwaccel_select="h264_decoder"
2256 h264_vdpau_hwaccel_deps="vdpau"
2257 h264_vdpau_hwaccel_select="h264_decoder"
2258 hevc_cuvid_hwaccel_deps="cuvid CUVIDHEVCPICPARAMS"
2259 hevc_cuvid_hwaccel_select="hevc_decoder"
2260 hevc_d3d11va_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2261 hevc_d3d11va_hwaccel_select="hevc_decoder"
2262 hevc_d3d11va2_hwaccel_deps="d3d11va DXVA_PicParams_HEVC"
2263 hevc_d3d11va2_hwaccel_select="hevc_decoder"
2264 hevc_dxva2_hwaccel_deps="dxva2 DXVA_PicParams_HEVC"
2265 hevc_dxva2_hwaccel_select="hevc_decoder"
2266 hevc_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferHEVC"
2267 hevc_vaapi_hwaccel_select="hevc_decoder"
2268 hevc_vdpau_hwaccel_deps="vdpau VdpPictureInfoHEVC"
2269 hevc_vdpau_hwaccel_select="hevc_decoder"
2270 mpeg1_vdpau_hwaccel_deps="vdpau"
2271 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2272 mpeg2_d3d11va_hwaccel_deps="d3d11va"
2273 mpeg2_d3d11va_hwaccel_select="mpeg2video_decoder"
2274 mpeg2_d3d11va2_hwaccel_deps="d3d11va"
2275 mpeg2_d3d11va2_hwaccel_select="mpeg2video_decoder"
2276 mpeg2_dxva2_hwaccel_deps="dxva2"
2277 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2278 mpeg2_vaapi_hwaccel_deps="vaapi"
2279 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2280 mpeg2_vdpau_hwaccel_deps="vdpau"
2281 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2282 mpeg4_vaapi_hwaccel_deps="vaapi"
2283 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2284 mpeg4_vdpau_hwaccel_deps="vdpau"
2285 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2286 vc1_d3d11va_hwaccel_deps="d3d11va"
2287 vc1_d3d11va_hwaccel_select="vc1_decoder"
2288 vc1_d3d11va2_hwaccel_deps="d3d11va"
2289 vc1_d3d11va2_hwaccel_select="vc1_decoder"
2290 vc1_dxva2_hwaccel_deps="dxva2"
2291 vc1_dxva2_hwaccel_select="vc1_decoder"
2292 vc1_vaapi_hwaccel_deps="vaapi"
2293 vc1_vaapi_hwaccel_select="vc1_decoder"
2294 vc1_vdpau_hwaccel_deps="vdpau"
2295 vc1_vdpau_hwaccel_select="vc1_decoder"
2296 vp8_vaapi_hwaccel_deps="vaapi VAPictureParameterBufferVP8"
2297 vp8_vaapi_hwaccel_select="vp8_decoder"
2298 wmv3_d3d11va_hwaccel_select="vc1_d3d11va_hwaccel"
2299 wmv3_d3d11va2_hwaccel_select="vc1_d3d11va2_hwaccel"
2300 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2301 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2302 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2303
2304 # hardware-accelerated codecs
2305 amf_deps_any="libdl LoadLibrary"
2306 nvenc_deps_any="libdl LoadLibrary"
2307 omx_deps="libdl pthreads"
2308 omx_rpi_select="omx"
2309 qsv_deps="libmfx"
2310 qsvdec_select="qsv"
2311 qsvenc_select="qsv"
2312 qsvvpp_select="qsv"
2313 vaapi_encode_deps="vaapi"
2314
2315 hwupload_cuda_filter_deps="cuda"
2316 scale_npp_filter_deps="cuda libnpp"
2317
2318 h264_amf_encoder_deps="amf"
2319 h264_mmal_decoder_deps="mmal"
2320 h264_nvenc_encoder_deps="nvenc"
2321 h264_omx_encoder_deps="omx"
2322 h264_qsv_decoder_select="h264_mp4toannexb_bsf h264_parser qsvdec"
2323 h264_qsv_encoder_select="qsvenc"
2324 h264_vaapi_encoder_deps="VAEncPictureParameterBufferH264"
2325 h264_vaapi_encoder_select="cbs_h264 vaapi_encode"
2326 hevc_amf_encoder_deps="amf"
2327 hevc_nvenc_encoder_deps="nvenc"
2328 hevc_qsv_decoder_select="hevc_mp4toannexb_bsf hevc_parser qsvdec"
2329 hevc_qsv_encoder_select="hevcparse qsvenc"
2330 hevc_vaapi_encoder_deps="VAEncPictureParameterBufferHEVC"
2331 hevc_vaapi_encoder_select="cbs_h265 vaapi_encode"
2332 mjpeg_qsv_encoder_deps="libmfx"
2333 mjpeg_qsv_encoder_select="qsvenc"
2334 mjpeg_vaapi_encoder_deps="VAEncPictureParameterBufferJPEG"
2335 mjpeg_vaapi_encoder_select="vaapi_encode jpegtables"
2336 mpeg2_mmal_decoder_deps="mmal"
2337 mpeg2_qsv_decoder_select="qsvdec mpegvideo_parser"
2338 mpeg2_qsv_encoder_select="qsvenc"
2339 mpeg2_vaapi_encoder_deps="VAEncPictureParameterBufferMPEG2"
2340 mpeg2_vaapi_encoder_select="cbs_mpeg2 vaapi_encode"
2341 mpeg4_omx_encoder_deps="omx"
2342 vc1_mmal_decoder_deps="mmal"
2343 vc1_qsv_decoder_select="qsvdec vc1_parser"
2344 vp8_qsv_decoder_select="qsvdec vp8_parser"
2345 vp8_vaapi_encoder_deps="VAEncPictureParameterBufferVP8"
2346 vp8_vaapi_encoder_select="vaapi_encode"
2347 vp9_vaapi_encoder_deps="VAEncPictureParameterBufferVP9"
2348 vp9_vaapi_encoder_select="vaapi_encode"
2349
2350 nvenc_h264_encoder_select="h264_nvenc_encoder"
2351 nvenc_hevc_encoder_select="hevc_nvenc_encoder"
2352
2353 # parsers
2354 aac_parser_select="adts_header"
2355 h264_parser_select="golomb h264dsp h264parse"
2356 hevc_parser_select="hevcparse"
2357 mpegaudio_parser_select="mpegaudioheader"
2358 mpegvideo_parser_select="mpegvideo"
2359 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2360 vc1_parser_select="vc1dsp"
2361
2362 # bitstream_filters
2363 aac_adtstoasc_bsf_select="adts_header"
2364 h264_metadata_bsf_select="cbs_h264"
2365 h264_redundant_pps_bsf_select="cbs_h264"
2366 hevc_metadata_bsf_select="cbs_h265"
2367 mjpeg2jpeg_bsf_select="jpegtables"
2368 mpeg2_metadata_bsf_select="cbs_mpeg2"
2369 trace_headers_bsf_select="cbs_h264 cbs_h265 cbs_mpeg2"
2370
2371 # external libraries
2372 avisynth_deps="LoadLibrary"
2373 avxsynth_deps="libdl"
2374 avisynth_demuxer_deps_any="avisynth avxsynth"
2375 avisynth_demuxer_select="riffdec"
2376 libaom_av1_decoder_deps="libaom"
2377 libaom_av1_encoder_deps="libaom"
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 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 librtmp_protocol_deps="librtmp"
2527 librtmpe_protocol_deps="librtmp"
2528 librtmps_protocol_deps="librtmp"
2529 librtmpt_protocol_deps="librtmp"
2530 librtmpte_protocol_deps="librtmp"
2531 mmsh_protocol_select="http_protocol"
2532 mmst_protocol_select="network"
2533 rtmp_protocol_conflict="librtmp_protocol"
2534 rtmp_protocol_select="tcp_protocol"
2535 rtmp_protocol_suggest="zlib"
2536 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2537 rtmpe_protocol_suggest="zlib"
2538 rtmps_protocol_conflict="librtmp_protocol"
2539 rtmps_protocol_select="tls_protocol"
2540 rtmps_protocol_suggest="zlib"
2541 rtmpt_protocol_select="ffrtmphttp_protocol"
2542 rtmpt_protocol_suggest="zlib"
2543 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2544 rtmpte_protocol_suggest="zlib"
2545 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2546 rtmpts_protocol_suggest="zlib"
2547 rtp_protocol_select="udp_protocol"
2548 sctp_protocol_deps="struct_sctp_event_subscribe"
2549 sctp_protocol_select="network"
2550 srtp_protocol_select="rtp_protocol srtp"
2551 tcp_protocol_select="network"
2552 tls_protocol_deps_any="gnutls openssl"
2553 tls_protocol_select="tcp_protocol"
2554 udp_protocol_select="network"
2555 unix_protocol_deps="sys_un_h"
2556 unix_protocol_select="network"
2557
2558 # filters
2559 asyncts_filter_deps="avresample"
2560 blackframe_filter_deps="gpl"
2561 boxblur_filter_deps="gpl"
2562 bs2b_filter_deps="libbs2b"
2563 cropdetect_filter_deps="gpl"
2564 deinterlace_qsv_filter_deps="libmfx"
2565 deinterlace_vaapi_filter_deps="vaapi"
2566 delogo_filter_deps="gpl"
2567 drawtext_filter_deps="libfreetype"
2568 drawtext_filter_suggest="libfontconfig"
2569 frei0r_filter_deps="frei0r libdl"
2570 frei0r_src_filter_deps="frei0r libdl"
2571 hdcd_filter_deps="libhdcd"
2572 hqdn3d_filter_deps="gpl"
2573 interlace_filter_deps="gpl"
2574 movie_filter_deps="avcodec avformat"
2575 ocv_filter_deps="libopencv"
2576 overlay_qsv_filter_deps="libmfx"
2577 overlay_qsv_filter_select="qsvvpp"
2578 resample_filter_deps="avresample"
2579 scale_filter_deps="swscale"
2580 scale_qsv_filter_deps="libmfx"
2581 scale_vaapi_filter_deps="vaapi VAProcPipelineParameterBuffer"
2582 vpp_qsv_filter_deps="libmfx"
2583 vpp_qsv_filter_select="qsvvpp"
2584
2585 # examples
2586 decode_audio_example_deps="avcodec avutil"
2587 decode_video_example_deps="avcodec avutil"
2588 encode_audio_example_deps="avcodec avutil"
2589 encode_video_example_deps="avcodec avutil"
2590 filter_audio_example_deps="avfilter avutil"
2591 metadata_example_deps="avformat avutil"
2592 output_example_deps="avcodec avformat avresample avutil swscale"
2593 qsvdec_example_deps="avcodec avutil libmfx h264_qsv_decoder"
2594 transcode_aac_example_deps="avcodec avformat avresample"
2595
2596 # EXTRALIBS_LIST
2597 cpu_init_extralibs="pthreads_extralibs"
2598 cws2fws_extralibs="zlib_extralibs"
2599
2600 # libraries, in linking order
2601 avcodec_deps="avutil"
2602 avcodec_select="null_bsf"
2603 avdevice_deps="avformat avcodec avutil"
2604 avfilter_deps="avutil"
2605 avformat_deps="avcodec avutil"
2606 avformat_suggest="network"
2607 avresample_deps="avutil"
2608 swscale_deps="avutil"
2609
2610 avcodec_extralibs="pthreads_extralibs libm_extralibs"
2611 avdevice_extralibs="libm_extralibs"
2612 avformat_extralibs="libm_extralibs"
2613 avfilter_extralibs="pthreads_extralibs libm_extralibs"
2614 avresample_extralibs="libm_extralibs"
2615 avutil_extralibs="clock_gettime_extralibs cuda_extralibs cuvid_extralibs d3d11va_extralibs libm_extralibs libmfx_extralibs nanosleep_extralibs pthreads_extralibs user32_extralibs vaapi_extralibs vaapi_drm_extralibs vaapi_x11_extralibs vdpau_x11_extralibs wincrypt_extralibs"
2616 swscale_extralibs="libm_extralibs"
2617
2618 # programs
2619 avconv_deps="avcodec avfilter avformat avresample swscale"
2620 avconv_select="aformat_filter anull_filter asyncts_filter atrim_filter format_filter
2621                fps_filter null_filter resample_filter scale_filter
2622                trim_filter"
2623 avconv_suggest="psapi shell32"
2624 avplay_deps="avcodec avfilter avformat avresample sdl"
2625 avplay_select="rdft format_filter transpose_filter hflip_filter vflip_filter"
2626 avplay_suggest="shell32"
2627 avprobe_deps="avcodec avformat"
2628 avprobe_suggest="shell32"
2629
2630 # documentation
2631 pod2man_deps="doc"
2632 texi2html_deps="doc"
2633
2634 # default parameters
2635
2636 logfile="avbuild/config.log"
2637
2638 # installation paths
2639 prefix_default="/usr/local"
2640 bindir_default='${prefix}/bin'
2641 datadir_default='${prefix}/share/avconv'
2642 docdir_default='${prefix}/share/doc/libav'
2643 incdir_default='${prefix}/include'
2644 libdir_default='${prefix}/lib'
2645 mandir_default='${prefix}/share/man'
2646 shlibdir_default="$libdir_default"
2647
2648 # toolchain
2649 ar_default="ar"
2650 cc_default="gcc"
2651 host_cc_default="gcc"
2652 x86asmexe_default="nasm"
2653 ln_s="ln -s -f"
2654 nm_default="nm -g"
2655 pkg_config_default=pkg-config
2656 ranlib="ranlib"
2657 strip="strip"
2658 version_script='--version-script'
2659 objformat="elf32"
2660
2661 # machine
2662 arch_default=$(uname -m)
2663 cpu="generic"
2664 intrinsics="none"
2665
2666 # OS
2667 target_os_default=$(tolower $(uname -s))
2668 host_os=$target_os_default
2669
2670 # configurable options
2671 enable $EXAMPLE_LIST $LIBRARY_LIST $PROGRAM_LIST
2672
2673 enable asm
2674 enable debug
2675 enable doc
2676 enable faan faandct faanidct
2677 enable optimizations
2678 enable safe_bitstream_reader
2679 enable static
2680 enable swscale_alpha
2681 enable valgrind_backtrace
2682
2683 # By default, enable only those hwaccels that have no external dependencies.
2684 enable d3d11va dxva2 vda vdpau
2685
2686 # internal components are enabled by default
2687 enable $EXTRALIBS_LIST
2688
2689 # Avoid external, non-system, libraries getting enabled by dependency resolution
2690 disable $EXTERNAL_LIBRARY_LIST
2691
2692 # build settings
2693 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2694 LIBPREF="lib"
2695 LIBSUF=".a"
2696 LIBNAME='$(LIBPREF)$(NAME)$(LIBSUF)'
2697 SLIBPREF="lib"
2698 SLIBSUF=".so"
2699 SLIBNAME='$(SLIBPREF)$(NAME)$(SLIBSUF)'
2700 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2701 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2702 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2703 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2704 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2705 VERSION_SCRIPT_POSTPROCESS_CMD="cat"
2706
2707 asflags_filter=echo
2708 cflags_filter=echo
2709 ldflags_filter=echo
2710
2711 AS_C='-c'
2712 AS_O='-o $@'
2713 CC_C='-c'
2714 CC_E='-E -o $@'
2715 CC_O='-o $@'
2716 OBJCC_C='-c'
2717 OBJCC_E='-E -o $@'
2718 OBJCC_O='-o $@'
2719 X86ASM_O='-o $@'
2720 LD_O='-o $@'
2721 LD_LIB='-l%'
2722 LD_PATH='-L'
2723 HOSTCC_C='-c'
2724 HOSTCC_E='-E -o $@'
2725 HOSTCC_O='-o $@'
2726 HOSTLD_O='-o $@'
2727
2728 host_extralibs='-lm'
2729 host_cflags_filter=echo
2730 host_ldflags_filter=echo
2731
2732 target_path='$(CURDIR)'
2733
2734 # since the object filename is not given with the -MM flag, the compiler
2735 # is only able to print the basename, and we must add the path ourselves
2736 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2737 DEPFLAGS='-MM'
2738
2739 mkdir -p avbuild
2740
2741 # find source path
2742 if test -f configure; then
2743     source_path=.
2744 else
2745     source_path=$(cd $(dirname "$0"); pwd)
2746     echo "$source_path" | grep -q '[[:blank:]]' &&
2747         die "Out of tree builds are impossible with whitespace in source path."
2748     test -e "$source_path/config.h" &&
2749         die "Out of tree builds are impossible with config.h in source dir."
2750 fi
2751
2752 for v in "$@"; do
2753     r=${v#*=}
2754     l=${v%"$r"}
2755     r=$(sh_quote "$r")
2756     LIBAV_CONFIGURATION="${LIBAV_CONFIGURATION# } ${l}${r}"
2757 done
2758
2759 find_things(){
2760     thing=$1
2761     pattern=$2
2762     file=$source_path/$3
2763     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2764 }
2765
2766 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2767 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2768 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2769 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2770 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2771 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2772 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2773
2774 find_things_extern(){
2775     thing=$1
2776     pattern=$2
2777     file=$source_path/$3
2778     sed -n "s/^[^#]*extern.*$pattern *ff_\([^ ]*\)_$thing;/\1_$thing/p" "$file"
2779 }
2780
2781 BSF_LIST=$(find_things_extern bsf AVBitStreamFilter libavcodec/bitstream_filters.c)
2782 HWACCEL_LIST=$(find_things_extern hwaccel AVHWAccel libavcodec/hwaccels.h)
2783 PROTOCOL_LIST=$(find_things_extern protocol URLProtocol libavformat/protocols.c)
2784
2785 AVCODEC_COMPONENTS_LIST="
2786     $BSF_LIST
2787     $DECODER_LIST
2788     $ENCODER_LIST
2789     $HWACCEL_LIST
2790     $PARSER_LIST
2791 "
2792
2793 AVDEVICE_COMPONENTS_LIST="
2794     $INDEV_LIST
2795 "
2796
2797 AVFILTER_COMPONENTS_LIST="
2798     $FILTER_LIST
2799 "
2800
2801 AVFORMAT_COMPONENTS_LIST="
2802     $DEMUXER_LIST
2803     $MUXER_LIST
2804     $PROTOCOL_LIST
2805 "
2806
2807 ALL_COMPONENTS="
2808     $AVCODEC_COMPONENTS_LIST
2809     $AVDEVICE_COMPONENTS_LIST
2810     $AVFILTER_COMPONENTS_LIST
2811     $AVFORMAT_COMPONENTS_LIST
2812 "
2813
2814 for n in $COMPONENT_LIST; do
2815     v=$(toupper ${n%s})_LIST
2816     eval enable \$$v
2817     eval ${n}_if_any="\$$v"
2818 done
2819
2820 enable $ARCH_EXT_LIST
2821
2822 die_unknown(){
2823     echo "Unknown option \"$1\"."
2824     echo "See $0 --help for available options."
2825     exit 1
2826 }
2827
2828 print_3_columns() {
2829     printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
2830 }
2831
2832 show_list() {
2833     suffix=_$1
2834     shift
2835     echo $* | sed s/$suffix//g | print_3_columns
2836     exit 0
2837 }
2838
2839 for opt do
2840     optval="${opt#*=}"
2841     case "$opt" in
2842         --extra-ldflags=*)
2843             add_ldflags $optval
2844         ;;
2845         --extra-ldexeflags=*)
2846             add_ldexeflags $optval
2847         ;;
2848         --extra-ldsoflags=*)
2849             add_ldsoflags $optval
2850         ;;
2851         --extra-libs=*)
2852             add_extralibs $optval
2853         ;;
2854         --disable-devices)
2855             disable $INDEV_LIST
2856         ;;
2857         --enable-debug=*)
2858             debuglevel="$optval"
2859         ;;
2860         --disable-programs)
2861             disable $PROGRAM_LIST
2862         ;;
2863         --disable-everything)
2864             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2865         ;;
2866         --disable-all)
2867             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2868             disable $LIBRARY_LIST $PROGRAM_LIST doc
2869         ;;
2870         --enable-*=*|--disable-*=*)
2871             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2872             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2873             eval list=\$$(toupper $thing)_LIST
2874             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2875             $action $(filter "$name" $list)
2876         ;;
2877         --enable-yasm|--disable-yasm)
2878             warn "The ${opt} option is only provided for compatibility and will be\n"\
2879                  "removed in the future. Use --enable-x86asm / --disable-x86asm instead."
2880             test $opt = --enable-yasm && x86asm=yes || x86asm=no
2881         ;;
2882         --enable-?*|--disable-?*)
2883             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2884             if is_in $option $COMPONENT_LIST; then
2885                 test $action = disable && action=unset
2886                 eval $action \$$(toupper ${option%s})_LIST
2887             elif is_in $option $CMDLINE_SELECT; then
2888                 $action $option
2889             else
2890                 die_unknown $opt
2891             fi
2892         ;;
2893         --list-*)
2894             NAME="${opt#--list-}"
2895             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2896             NAME=${NAME%s}
2897             eval show_list $NAME \$$(toupper $NAME)_LIST
2898         ;;
2899         --help|-h) show_help
2900         ;;
2901         --quiet|-q) quiet=yes
2902         ;;
2903         *)
2904             optname="${opt%%=*}"
2905             optname="${optname#--}"
2906             optname=$(echo "$optname" | sed 's/-/_/g')
2907             if is_in $optname $CMDLINE_SET; then
2908                 eval $optname='$optval'
2909             elif is_in $optname $CMDLINE_APPEND; then
2910                 append $optname "$optval"
2911             else
2912                 die_unknown $opt
2913             fi
2914         ;;
2915     esac
2916 done
2917
2918 for e in $env; do
2919     eval "export $e"
2920 done
2921
2922 disabled logging && logfile=/dev/null
2923
2924 # command line configuration sanity checks
2925
2926 # we need to build at least one lib type
2927 if ! enabled_any static shared; then
2928     cat <<EOF
2929 At least one library type must be built.
2930 Specify --enable-static to build the static libraries or --enable-shared to
2931 build the shared libraries as well. To only build the shared libraries specify
2932 --disable-static in addition to --enable-shared.
2933 EOF
2934     exit 1
2935 fi
2936
2937 # Die early if licensing-related configure options are incompatible.
2938 die_license_disabled() {
2939     enabled $1 || { enabled $v && die "$v is $1 and --enable-$1 is not specified."; }
2940 }
2941
2942 map "die_license_disabled gpl"      $EXTERNAL_LIBRARY_GPL_LIST
2943 map "die_license_disabled nonfree"  $EXTERNAL_LIBRARY_NONFREE_LIST $HWACCEL_LIBRARY_NONFREE_LIST
2944 map "die_license_disabled version3" $EXTERNAL_LIBRARY_VERSION3_LIST
2945
2946 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
2947
2948 if enabled nonfree; then
2949     license="nonfree and unredistributable"
2950 elif enabled gplv3; then
2951     license="GPL version 3 or later"
2952 elif enabled lgplv3; then
2953     license="LGPL version 3 or later"
2954 elif enabled gpl; then
2955     license="GPL version 2 or later"
2956 else
2957     license="LGPL version 2.1 or later"
2958 fi
2959
2960 enabled_all gnutls openssl &&
2961     die "GnuTLS and OpenSSL must not be enabled at the same time."
2962
2963 # Disable all the library-specific components if the library itself
2964 # is disabled, see AVCODEC_LIST and following _LIST variables.
2965
2966 disable_components(){
2967     disabled ${1} && disable $(
2968         eval components="\$$(toupper ${1})_COMPONENTS"
2969         map 'eval echo \${$(toupper ${v%s})_LIST}' $components
2970     )
2971 }
2972
2973 map 'disable_components $v' $LIBRARY_LIST
2974
2975 echo "# $0 $LIBAV_CONFIGURATION" > $logfile
2976 set >> $logfile
2977
2978 case "$toolchain" in
2979     *-asan)
2980         cc_default="${toolchain%-asan}"
2981         add_cflags  -fsanitize=address
2982         add_ldflags -fsanitize=address
2983     ;;
2984     *-msan)
2985         cc_default="${toolchain%-msan}"
2986         add_cflags  -fsanitize=memory -fsanitize-memory-track-origins
2987         add_ldflags -fsanitize=memory
2988     ;;
2989     *-tsan)
2990         cc_default="${toolchain%-tsan}"
2991         add_cflags  -fsanitize=thread -fPIE
2992         add_ldflags -fsanitize=thread -pie
2993         case "$toolchain" in
2994             gcc-tsan)
2995                 add_cflags  -fPIC
2996                 add_ldflags -fPIC
2997                 ;;
2998         esac
2999     ;;
3000     *-usan)
3001         cc_default="${toolchain%-usan}"
3002         add_cflags  -fsanitize=undefined
3003         add_ldflags -fsanitize=undefined
3004         case "$toolchain" in
3005             clang-usan)
3006                 add_cflags -O1
3007                 ;;
3008         esac
3009     ;;
3010     valgrind-*)
3011         target_exec_default="valgrind"
3012         case "$toolchain" in
3013             valgrind-massif)
3014                 target_exec_args="--alloc-fn=av_malloc --alloc-fn=av_mallocz"
3015                 ;;
3016             valgrind-memcheck)
3017                 target_exec_args="--track-origins=yes --leak-check=full"
3018                 ;;
3019         esac
3020     ;;
3021     msvc)
3022         # Check whether the current MSVC version needs the C99 converter.
3023         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3024         # support enough of C99 to build libav. Default to the new
3025         # behaviour if the regexp was unable to match anything, since this
3026         # successfully parses the version number of existing supported
3027         # versions that require the converter (MSVC 2010 and 2012).
3028         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3029         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3030             cc_default="cl"
3031         else
3032             cc_default="c99wrap cl"
3033         fi
3034         ld_default="$source_path/compat/windows/mslink"
3035         nm_default="dumpbin -symbols"
3036         ar_default="lib"
3037         case "$arch" in
3038         aarch64|arm64)
3039             as_default="armasm64"
3040             ;;
3041         arm*)
3042             as_default="armasm"
3043             ;;
3044         esac
3045         target_os_default="win32"
3046         # Use a relative path for TMPDIR. This makes sure all the
3047         # ffconf temp files are written with a relative path, avoiding
3048         # issues with msys/win32 path conversion for MSVC parameters
3049         # such as -Fo<file> or -out:<file>.
3050         TMPDIR=.
3051     ;;
3052     icl)
3053         cc_default="icl"
3054         ld_default="xilink"
3055         nm_default="dumpbin -symbols"
3056         ar_default="xilib"
3057         target_os_default="win32"
3058         TMPDIR=.
3059     ;;
3060     gcov)
3061         add_cflags  -fprofile-arcs -ftest-coverage
3062         add_ldflags -fprofile-arcs -ftest-coverage
3063     ;;
3064     llvm-cov)
3065         add_cflags -fprofile-arcs -ftest-coverage
3066         add_ldflags --coverage
3067     ;;
3068     hardened)
3069         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3070         add_cflags   -fno-strict-overflow -fstack-protector-all
3071         add_ldflags  -Wl,-z,relro -Wl,-z,now
3072     ;;
3073     ?*)
3074         die "Unknown toolchain $toolchain"
3075     ;;
3076 esac
3077
3078 if test -n "$cross_prefix"; then
3079     test -n "$arch" && test -n "$target_os" ||
3080         die "Must specify target arch (--arch) and OS (--target-os) when cross-compiling"
3081     enable cross_compile
3082 fi
3083
3084 ar_default="${cross_prefix}${ar_default}"
3085 cc_default="${cross_prefix}${cc_default}"
3086 objcc_default="${cross_prefix}${objcc_default}"
3087 x86asmexe_default="${cross_prefix}${x86asmexe_default}"
3088 nm_default="${cross_prefix}${nm_default}"
3089 pkg_config_default="${cross_prefix}${pkg_config_default}"
3090 ranlib="${cross_prefix}${ranlib}"
3091 strip="${cross_prefix}${strip}"
3092
3093 sysinclude_default="${sysroot}/usr/include"
3094
3095 set_default arch cc pkg_config sysinclude target_exec target_os x86asmexe
3096 enabled cross_compile || host_cc_default=$cc
3097 set_default host_cc
3098
3099 if ! $pkg_config --version >/dev/null 2>&1; then
3100     warn "$pkg_config not found, library detection may fail."
3101     pkg_config=false
3102 fi
3103
3104 exesuf() {
3105     case $1 in
3106         mingw32*|mingw64*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3107     esac
3108 }
3109
3110 EXESUF=$(exesuf $target_os)
3111 HOSTEXESUF=$(exesuf $host_os)
3112
3113 # set temporary file name
3114 : ${TMPDIR:=$TEMPDIR}
3115 : ${TMPDIR:=$TMP}
3116 : ${TMPDIR:=/tmp}
3117
3118 if ! test_cmd mktemp -u XXXXXX; then
3119     # simple replacement for missing mktemp
3120     # NOT SAFE FOR GENERAL USE
3121     mktemp(){
3122         tmpname="${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3123         echo "$tmpname"
3124         mkdir "$tmpname"
3125     }
3126 fi
3127
3128 AVTMPDIR=$(mktemp -d "${TMPDIR}/avconf.XXXXXXXX" 2> /dev/null) ||
3129     die "Unable to create temporary directory in $TMPDIR."
3130
3131 tmpfile(){
3132     tmp="${AVTMPDIR}/test"$2
3133     (set -C; exec > $tmp) 2> /dev/null ||
3134         die "Unable to create temporary file in $AVTMPDIR."
3135     eval $1=$tmp
3136 }
3137
3138 trap 'rm -rf -- "$AVTMPDIR"' EXIT
3139 trap 'exit 2' INT
3140
3141 tmpfile TMPASM .asm
3142 tmpfile TMPC   .c
3143 tmpfile TMPE   $EXESUF
3144 tmpfile TMPH   .h
3145 tmpfile TMPO   .o
3146 tmpfile TMPS   .S
3147 tmpfile TMPSH  .sh
3148 tmpfile TMPV   .ver
3149
3150 unset -f mktemp
3151
3152 chmod +x $TMPE
3153
3154 # make sure we can execute files in $TMPDIR
3155 cat > $TMPSH 2>> $logfile <<EOF
3156 #! /bin/sh
3157 EOF
3158 chmod +x $TMPSH >> $logfile 2>&1
3159 if ! $TMPSH >> $logfile 2>&1; then
3160     cat <<EOF
3161 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3162 variable to another directory and make sure that it is not mounted noexec.
3163 EOF
3164     die "Sanity test failed."
3165 fi
3166
3167 armasm_flags(){
3168     for flag; do
3169         case $flag in
3170             # Filter out MSVC cl.exe options from cflags that shouldn't
3171             # be passed to gas-preprocessor
3172             -M[TD]*)                                            ;;
3173             *)                  echo $flag                      ;;
3174         esac
3175    done
3176 }
3177
3178 cparser_flags(){
3179     for flag; do
3180         case $flag in
3181             -Wno-switch)             echo -Wno-switch-enum ;;
3182             -Wno-format-zero-length) ;;
3183             -Wdisabled-optimization) ;;
3184             -Wno-pointer-sign)       echo -Wno-other ;;
3185             *)                       echo $flag ;;
3186         esac
3187     done
3188 }
3189
3190 msvc_common_flags(){
3191     for flag; do
3192         case $flag in
3193             # In addition to specifying certain flags under the compiler
3194             # specific filters, they must be specified here as well or else the
3195             # generic catch all at the bottom will print the original flag.
3196             -Wall)                ;;
3197             -Wextra)              ;;
3198             -std=c99)             ;;
3199             # Common flags
3200             -fomit-frame-pointer) ;;
3201             -g)                   echo -Z7 ;;
3202             -fno-math-errno)      ;;
3203             -fno-common)          ;;
3204             -fno-signed-zeros)    ;;
3205             -fPIC)                ;;
3206             -mthumb)              ;;
3207             -march=*)             ;;
3208             -lz)                  echo zlib.lib ;;
3209             -lx264)               echo libx264.lib ;;
3210             -l*)                  echo ${flag#-l}.lib ;;
3211             -L*)                  echo -libpath:${flag#-L} ;;
3212             *)                    echo $flag ;;
3213         esac
3214     done
3215 }
3216
3217 msvc_flags(){
3218     msvc_common_flags "$@"
3219     for flag; do
3220         case $flag in
3221             -Wall)                echo -W3 -wd4018 -wd4146 -wd4244 -wd4305     \
3222                                        -wd4554 ;;
3223             -Wextra)              echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3224                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3225                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3226                                        -wd4273 -wd4554 -wd4701 -wd4703 ;;
3227         esac
3228     done
3229 }
3230
3231 icl_flags(){
3232     msvc_common_flags "$@"
3233     for flag; do
3234         case $flag in
3235             # Despite what Intel's documentation says -Wall, which is supported
3236             # on Windows, does enable remarks so disable them here.
3237             -Wall)                echo $flag -Qdiag-disable:remark ;;
3238             -std=c99)             echo -Qstd=c99 ;;
3239         esac
3240     done
3241 }
3242
3243 suncc_flags(){
3244     for flag; do
3245         case $flag in
3246             -march=*|-mcpu=*)
3247                 case "${flag#*=}" in
3248                     native)                   echo -xtarget=native       ;;
3249                     v9|niagara)               echo -xarch=sparc          ;;
3250                     ultrasparc)               echo -xarch=sparcvis       ;;
3251                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3252                     i586|pentium)             echo -xchip=pentium        ;;
3253                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3254                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3255                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3256                     pentium4*)          echo -xtarget=pentium4           ;;
3257                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3258                     *-sse3)             echo -xarch=sse3                 ;;
3259                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3260                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
3261                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
3262                     amdfam10|barcelona|bdver*) echo -xarch=sse4_1        ;;
3263                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3264                     k8|opteron|athlon64|athlon-fx)
3265                                                echo -xarch=sse2a         ;;
3266                     athlon*)                   echo -xarch=pentium_proa  ;;
3267                 esac
3268                 ;;
3269             -std=c99)             echo -xc99              ;;
3270             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3271             -fPIC)                echo -KPIC -xcode=pic32 ;;
3272             -W*,*)                echo $flag              ;;
3273             -f*-*|-W*|-mimpure-text)                      ;;
3274             -shared)              echo -G                 ;;
3275             *)                    echo $flag              ;;
3276         esac
3277     done
3278 }
3279
3280 probe_cc(){
3281     pfx=$1
3282     _cc=$2
3283
3284     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3285     unset _ld_o _ldflags _ld_lib _ld_path
3286     unset _depflags _DEPCMD _DEPFLAGS
3287     _flags_filter=echo
3288
3289     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3290         _type=llvm_gcc
3291         gcc_extra_ver=$(expr "$($_cc --version 2>/dev/null | head -n1)" : '.*\((.*)\)')
3292         _ident="llvm-gcc $($_cc -dumpversion 2>/dev/null) $gcc_extra_ver"
3293         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3294         _cflags_speed='-O3'
3295         _cflags_size='-Os'
3296     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3297         _type=gcc
3298         gcc_version=$($_cc --version | head -n1)
3299         gcc_basever=$($_cc -dumpversion)
3300         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3301         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3302         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3303         if ! $_cc -dumpversion | grep -q '^2\.'; then
3304             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3305         fi
3306         _cflags_speed='-O3'
3307         _cflags_size='-Os'
3308     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3309         _type=icc
3310         _ident=$($_cc --version | head -n1)
3311         _depflags='-MMD'
3312         _cflags_speed='-O3'
3313         _cflags_size='-Os'
3314         _cflags_noopt='-O1'
3315     elif $_cc -v 2>&1 | grep -q xlc; then
3316         _type=xlc
3317         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3318         _cflags_speed='-O5'
3319         _cflags_size='-O5 -qcompact'
3320     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3321         test -d "$sysroot" || die "No valid sysroot specified."
3322         _type=armcc
3323         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3324         armcc_conf="$PWD/armcc.conf"
3325         $_cc --arm_linux_configure                 \
3326              --arm_linux_config_file="$armcc_conf" \
3327              --configure_sysroot="$sysroot"        \
3328              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3329              die "Error creating armcc configuration file."
3330         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3331         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3332         as_default="${cross_prefix}gcc"
3333         _depflags='-MMD'
3334         _cflags_speed='-O3'
3335         _cflags_size='-Os'
3336     elif $_cc -v 2>&1 | grep -q clang; then
3337         _type=clang
3338         _ident=$($_cc --version 2>/dev/null | head -n1)
3339         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3340         _cflags_speed='-O3'
3341         _cflags_size='-Os'
3342     elif $_cc -V 2>&1 | grep -q Sun; then
3343         _type=suncc
3344         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3345         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3346         _DEPFLAGS='-xM1 -xc99'
3347         _ldflags='-std=c99'
3348         _cflags_speed='-O5'
3349         _cflags_size='-O5 -xspace'
3350         _flags_filter=suncc_flags
3351     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3352         _type=pathscale
3353         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3354         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3355         _cflags_speed='-O2'
3356         _cflags_size='-Os'
3357         _flags_filter='filter_out -Wdisabled-optimization'
3358     elif $_cc -v 2>&1 | grep -q Open64; then
3359         _type=open64
3360         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3361         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3362         _cflags_speed='-O2'
3363         _cflags_size='-Os'
3364         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3365     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3366         _type=armasm
3367         _ident=$($_cc | head -n1)
3368         # 4509: "This form of conditional instruction is deprecated"
3369         _flags="-nologo -ignore 4509"
3370         _flags_filter=armasm_flags
3371     elif $_cc -nologo- 2>&1 | grep -q Microsoft; then
3372         _type=msvc
3373         _ident=$($_cc 2>&1 | head -n1)
3374         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3375         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3376         _cflags_speed="-O2"
3377         _cflags_size="-O1"
3378         _cflags_noopt="-O1"
3379         if $_cc -nologo- 2>&1 | grep -q Linker; then
3380             _ld_o='-out:$@'
3381         else
3382             _ld_o='-Fe$@'
3383         fi
3384         _cc_o='-Fo$@'
3385         _cc_e='-P -Fi$@'
3386         _flags_filter=msvc_flags
3387         _ld_lib='lib%.a'
3388         _ld_path='-libpath:'
3389         _flags='-nologo'
3390     elif $_cc 2>&1 | grep -q Intel; then
3391         _type=icl
3392         _ident=$($_cc 2>&1 | head -n1)
3393         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3394         # Not only is O3 broken on 13.x+ but it is slower on all previous
3395         # versions (tested) as well.
3396         _cflags_speed="-O2"
3397         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3398         if $_cc 2>&1 | grep -q Linker; then
3399             _ld_o='-out:$@'
3400         else
3401             _ld_o='-Fe$@'
3402         fi
3403         _cc_o='-Fo$@'
3404         _cc_e='-P'
3405         _flags_filter=icl_flags
3406         _ld_lib='lib%.a'
3407         _ld_path='-libpath:'
3408         # -Qdiag-error to make icl error when seeing certain unknown arguments
3409         _flags='-nologo -Qdiag-error:4044,10157'
3410         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3411         # with MSVC which enables it by default.
3412         _cflags='-Qms0 -Qvec- -Qsimd- -GS'
3413     elif $_cc -? 2>/dev/null | grep -q 'LLVM.*Linker'; then
3414         # lld can emulate multiple different linkers; in ms link.exe mode,
3415         # the -? parameter gives the help output which contains an identifyable
3416         # string, while it gives an error in other modes.
3417         _type=lld-link
3418         # The link.exe mode doesn't have a switch for getting the version,
3419         # but we can force it back to gnu mode and get the version from there.
3420         _ident=$($_cc -flavor gnu --version 2>/dev/null)
3421         _ld_o='-out:$@'
3422         _flags_filter=msvc_flags
3423         _ld_lib='lib%.a'
3424         _ld_path='-libpath:'
3425     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3426         _type=cparser
3427         _ident=$($_cc --version | head -n1)
3428         _depflags='-MMD'
3429         _cflags_speed='-O4'
3430         _cflags_size='-O2'
3431         _flags_filter=cparser_flags
3432     fi
3433
3434     eval ${pfx}_type=\$_type
3435     eval ${pfx}_ident=\$_ident
3436 }
3437
3438 set_ccvars(){
3439     eval ${1}_C=\${_cc_c-\${${1}_C}}
3440     eval ${1}_E=\${_cc_e-\${${1}_E}}
3441     eval ${1}_O=\${_cc_o-\${${1}_O}}
3442
3443     if [ -n "$_depflags" ]; then
3444         eval ${1}_DEPFLAGS=\$_depflags
3445     else
3446         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3447         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3448         eval DEP${1}FLAGS=\$_flags
3449     fi
3450 }
3451
3452 probe_cc cc "$cc"
3453 cflags_filter=$_flags_filter
3454 cflags_speed=$_cflags_speed
3455 cflags_size=$_cflags_size
3456 cflags_noopt=$_cflags_noopt
3457 add_cflags $_flags $_cflags
3458 cc_ldflags=$_ldflags
3459 set_ccvars CC
3460
3461 probe_cc hostcc "$host_cc"
3462 host_cflags_filter=$_flags_filter
3463 host_cflags_speed=$_cflags_speed
3464 add_host_cflags  $_flags $_cflags
3465 set_ccvars HOSTCC
3466
3467 test -n "$cc_type" && enable $cc_type ||
3468     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3469
3470 : ${as_default:=$cc}
3471 : ${objcc_default:=$cc}
3472 : ${dep_cc_default:=$cc}
3473 : ${ld_default:=$cc}
3474 : ${host_ld_default:=$host_cc}
3475 set_default ar as objcc dep_cc ld host_ld
3476
3477 probe_cc as "$as"
3478 asflags_filter=$_flags_filter
3479 add_asflags $_flags $_cflags
3480 set_ccvars AS
3481
3482 probe_cc objcc "$objcc"
3483 objcflags_filter=$_flags_filter
3484 add_objcflags $_flags $_cflags
3485 set_ccvars OBJC
3486
3487 probe_cc ld "$ld"
3488 ldflags_filter=$_flags_filter
3489 add_ldflags $_flags $_ldflags
3490 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3491 LD_O=${_ld_o-$LD_O}
3492 LD_LIB=${_ld_lib-$LD_LIB}
3493 LD_PATH=${_ld_path-$LD_PATH}
3494
3495 probe_cc hostld "$host_ld"
3496 host_ldflags_filter=$_flags_filter
3497 add_host_ldflags $_flags $_ldflags
3498 HOSTLD_O=${_ld_o-$HOSTLD_O}
3499
3500 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3501     probe_cc depcc "$dep_cc"
3502     CCDEP=${_DEPCMD:-$DEPCMD}
3503     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3504     DEPCCFLAGS=$_flags
3505 fi
3506
3507 if $ar 2>&1 | grep -q Microsoft; then
3508     arflags="-nologo"
3509     ar_o='-out:$@'
3510 else
3511     arflags="rc"
3512     ar_o='$@'
3513 fi
3514
3515 add_cflags $extra_cflags
3516 add_objcflags $extra_objcflags
3517 add_asflags $extra_cflags
3518
3519 if test -n "$sysroot"; then
3520     case "$cc_type" in
3521         gcc|llvm_gcc|clang)
3522             add_cppflags --sysroot="$sysroot"
3523             add_ldflags --sysroot="$sysroot"
3524         ;;
3525     esac
3526 fi
3527
3528 if test "$cpu" = host; then
3529     enabled cross_compile &&
3530         die "--cpu=host makes no sense when cross-compiling."
3531
3532     case "$cc_type" in
3533         gcc|llvm_gcc)
3534             check_native(){
3535                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3536                 sed -n "/cc1.*$1=/{
3537                             s/.*$1=\\([^ ]*\\).*/\\1/
3538                             p
3539                             q
3540                         }" $TMPE
3541             }
3542             cpu=$(check_native -march || check_native -mcpu)
3543         ;;
3544     esac
3545
3546     test "${cpu:-host}" = host &&
3547         die "--cpu=host not supported with compiler $cc"
3548 fi
3549
3550 # Deal with common $arch aliases
3551 case "$arch" in
3552     aarch64|arm64)
3553         arch="aarch64"
3554     ;;
3555     arm*)
3556         arch="arm"
3557     ;;
3558     mips*|IP*)
3559         case "$arch" in
3560         *el)
3561             add_cppflags -EL
3562             add_ldflags -EL
3563         ;;
3564         *eb)
3565             add_cppflags -EB
3566             add_ldflags -EB
3567         ;;
3568         esac
3569         arch="mips"
3570     ;;
3571     parisc*|hppa*)
3572         arch="parisc"
3573     ;;
3574     "Power Macintosh"|ppc*|powerpc*)
3575         arch="ppc"
3576     ;;
3577     s390|s390x)
3578         arch="s390"
3579     ;;
3580     sh4|sh)
3581         arch="sh4"
3582     ;;
3583     sun4u|sparc*)
3584         arch="sparc"
3585     ;;
3586     tilegx|tile-gx)
3587         arch="tilegx"
3588     ;;
3589     i[3-6]86|i86pc|BePC|x86pc|x86_64|amd64)
3590         arch="x86"
3591     ;;
3592 esac
3593
3594 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3595 enable $arch
3596
3597 # Add processor-specific flags
3598 if enabled aarch64; then
3599
3600     case $cpu in
3601         armv*)
3602             cpuflags="-march=$cpu"
3603         ;;
3604         *)
3605             cpuflags="-mcpu=$cpu"
3606         ;;
3607     esac
3608
3609 elif enabled alpha; then
3610
3611     cpuflags="-mcpu=$cpu"
3612
3613 elif enabled arm; then
3614
3615     check_arm_arch() {
3616         test_cpp_condition stddef.h \
3617             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3618             $cpuflags
3619     }
3620
3621     probe_arm_arch() {
3622         if   check_arm_arch 4;        then echo armv4
3623         elif check_arm_arch 4T;       then echo armv4t
3624         elif check_arm_arch 5;        then echo armv5
3625         elif check_arm_arch 5E;       then echo armv5e
3626         elif check_arm_arch 5T;       then echo armv5t
3627         elif check_arm_arch 5TE;      then echo armv5te
3628         elif check_arm_arch 5TEJ;     then echo armv5te
3629         elif check_arm_arch 6;        then echo armv6
3630         elif check_arm_arch 6J;       then echo armv6j
3631         elif check_arm_arch 6K;       then echo armv6k
3632         elif check_arm_arch 6Z;       then echo armv6z
3633         elif check_arm_arch 6ZK;      then echo armv6zk
3634         elif check_arm_arch 6T2;      then echo armv6t2
3635         elif check_arm_arch 7;        then echo armv7
3636         elif check_arm_arch 7A  7_A;  then echo armv7-a
3637         elif check_arm_arch 7S;       then echo armv7-a
3638         elif check_arm_arch 7R  7_R;  then echo armv7-r
3639         elif check_arm_arch 7M  7_M;  then echo armv7-m
3640         elif check_arm_arch 7EM 7E_M; then echo armv7-m
3641         elif check_arm_arch 8A  8_A;  then echo armv8-a
3642         fi
3643     }
3644
3645     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3646
3647     case $cpu in
3648         armv*)
3649             cpuflags="-march=$cpu"
3650             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3651         ;;
3652         *)
3653             cpuflags="-mcpu=$cpu"
3654             case $cpu in
3655                 cortex-a*)                               subarch=armv7a  ;;
3656                 cortex-r*)                               subarch=armv7r  ;;
3657                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3658                 arm11*)                                  subarch=armv6   ;;
3659                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3660                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3661                 *)                             subarch=$(probe_arm_arch) ;;
3662             esac
3663         ;;
3664     esac
3665
3666     case "$subarch" in
3667         armv5t*)    enable fast_clz                ;;
3668         armv[6-8]*) enable fast_clz fast_unaligned ;;
3669     esac
3670
3671 elif enabled avr32; then
3672
3673     case $cpu in
3674         ap7[02]0[0-2])
3675             subarch="avr32_ap"
3676             cpuflags="-mpart=$cpu"
3677         ;;
3678         ap)
3679             subarch="avr32_ap"
3680             cpuflags="-march=$cpu"
3681         ;;
3682         uc3[ab]*)
3683             subarch="avr32_uc"
3684             cpuflags="-mcpu=$cpu"
3685         ;;
3686         uc)
3687             subarch="avr32_uc"
3688             cpuflags="-march=$cpu"
3689         ;;
3690     esac
3691
3692 elif enabled bfin; then
3693
3694     cpuflags="-mcpu=$cpu"
3695
3696 elif enabled mips; then
3697
3698     cpuflags="-march=$cpu"
3699
3700 elif enabled ppc; then
3701
3702     disable ldbrx
3703
3704     case $(tolower $cpu) in
3705         601|ppc601|powerpc601)
3706             cpuflags="-mcpu=601"
3707             disable altivec
3708         ;;
3709         603*|ppc603*|powerpc603*)
3710             cpuflags="-mcpu=603"
3711             disable altivec
3712         ;;
3713         604*|ppc604*|powerpc604*)
3714             cpuflags="-mcpu=604"
3715             disable altivec
3716         ;;
3717         g3|75*|ppc75*|powerpc75*)
3718             cpuflags="-mcpu=750"
3719             disable altivec
3720         ;;
3721         g4|745*|ppc745*|powerpc745*)
3722             cpuflags="-mcpu=7450"
3723             disable vsx
3724         ;;
3725         74*|ppc74*|powerpc74*)
3726             cpuflags="-mcpu=7400"
3727             disable vsx
3728         ;;
3729         g5|970|ppc970|powerpc970)
3730             cpuflags="-mcpu=970"
3731             disable vsx
3732         ;;
3733         power[3-6]*)
3734             cpuflags="-mcpu=$cpu"
3735             disable vsx
3736         ;;
3737         power[7-8]*)
3738             cpuflags="-mcpu=$cpu"
3739             enable ldbrx
3740         ;;
3741         cell)
3742             cpuflags="-mcpu=cell"
3743             enable ldbrx
3744             disable vsx
3745         ;;
3746         e500mc)
3747             cpuflags="-mcpu=e500mc"
3748             disable altivec
3749         ;;
3750         e500v2)
3751             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3752             disable altivec
3753             disable dcbzl
3754         ;;
3755         e500)
3756             cpuflags="-mcpu=8540 -mhard-float"
3757             disable altivec
3758             disable dcbzl
3759         ;;
3760     esac
3761
3762 elif enabled sparc; then
3763
3764     case $cpu in
3765         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3766             cpuflags="-mcpu=$cpu"
3767         ;;
3768         ultrasparc*|niagara[234])
3769             cpuflags="-mcpu=$cpu"
3770         ;;
3771     esac
3772
3773 elif enabled x86; then
3774
3775     case $cpu in
3776         i[345]86|pentium)
3777             cpuflags="-march=$cpu"
3778             disable i686
3779             disable mmx
3780         ;;
3781         # targets that do NOT support nopl and conditional mov (cmov)
3782         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3783             cpuflags="-march=$cpu"
3784             disable i686
3785         ;;
3786         # targets that do support nopl and conditional mov (cmov)
3787         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3788             cpuflags="-march=$cpu"
3789             enable i686
3790             enable fast_cmov
3791         ;;
3792         # targets that do support conditional mov but on which it's slow
3793         pentium4|pentium4m|prescott|nocona)
3794             cpuflags="-march=$cpu"
3795             enable i686
3796             disable fast_cmov
3797         ;;
3798     esac
3799
3800 fi
3801
3802 if [ "$cpu" != generic ]; then
3803     add_cflags  $cpuflags
3804     add_asflags $cpuflags
3805     test "$cc_type" = "$ld_type" && add_ldflags $cpuflags
3806 fi
3807
3808 # compiler sanity check
3809 test_exec <<EOF
3810 int main(void){ return 0; }
3811 EOF
3812 if test "$?" != 0; then
3813     echo "$cc is unable to create an executable file."
3814     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3815         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3816         echo "Only do this if you know what cross compiling means."
3817     fi
3818     die "C compiler test failed."
3819 fi
3820
3821 add_cppflags -D_ISOC99_SOURCE
3822
3823 # some compilers silently accept -std=c11, so we also need to check that the
3824 # version macro is defined properly
3825 test_cpp_condition stdlib.h  "__STDC_VERSION__ >= 201112L" -std=c11 &&
3826     add_cflags -std=c11 ||
3827     check_cflags -std=c99
3828
3829 check_cppflags -D_FILE_OFFSET_BITS=64
3830 check_cppflags -D_LARGEFILE_SOURCE
3831
3832 add_host_cppflags -D_ISOC99_SOURCE
3833 check_host_cflags -std=c99
3834 check_host_cflags -Wall
3835 check_host_cflags $host_cflags_speed
3836
3837 check_64bit(){
3838     arch32=$1
3839     arch64=$2
3840     expr=${3:-'sizeof(void *) > 4'}
3841     test_code cc "" "int test[2*($expr) - 1]" &&
3842         subarch=$arch64 || subarch=$arch32
3843     enable $subarch
3844 }
3845
3846 case "$arch" in
3847     aarch64|alpha|ia64)
3848         enabled shared && enable_weak pic
3849     ;;
3850     mips)
3851         check_64bit mips mips64 '_MIPS_SIM > 1'
3852         enabled shared && enable_weak pic
3853     ;;
3854     parisc)
3855         check_64bit parisc parisc64
3856         enabled shared && enable_weak pic
3857     ;;
3858     ppc)
3859         check_64bit ppc ppc64
3860         enabled shared && enable_weak pic
3861     ;;
3862     s390)
3863         check_64bit s390 s390x
3864         enabled shared && enable_weak pic
3865     ;;
3866     sparc)
3867         check_64bit sparc sparc64
3868         enabled shared && enable_weak pic
3869     ;;
3870     x86)
3871         check_64bit x86_32 x86_64
3872         if enabled x86_64; then
3873             enabled shared && enable_weak pic
3874             objformat=elf64
3875         fi
3876     ;;
3877 esac
3878
3879 # OS specific
3880 case $target_os in
3881     aix)
3882         SHFLAGS=-shared
3883         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3884         enabled shared && add_ldflags -Wl,-brtl
3885         arflags='-Xany -r -c'
3886         ;;
3887     android)
3888         disable symver
3889         enable section_data_rel_ro
3890         SLIB_INSTALL_NAME='$(SLIBNAME)'
3891         SLIB_INSTALL_LINKS=
3892         SHFLAGS='-shared -Wl,-soname,$(SLIBNAME)'
3893         ;;
3894     haiku)
3895         prefix_default="/boot/common"
3896         network_extralibs="-lnetwork"
3897         host_extralibs=
3898         ;;
3899     sunos)
3900         SHFLAGS='-shared -Wl,-h,$$(@F)'
3901         enabled x86 && append SHFLAGS -mimpure-text
3902         network_extralibs="-lsocket -lnsl"
3903         # When using suncc to build, the Solaris linker will mark
3904         # an executable with each instruction set encountered by
3905         # the Solaris assembler.  As our libraries contain their own
3906         # guards for processor-specific code, instead suppress
3907         # generation of the HWCAPS ELF section on Solaris x86 only.
3908         enabled_all suncc x86 &&
3909             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3910             add_ldflags -Wl,-M,mapfile
3911         nm_default='nm -P -g'
3912         version_script='-M'
3913         VERSION_SCRIPT_POSTPROCESS_CMD='perl $(SRC_PATH)/compat/solaris/make_sunver.pl - $(OBJS)'
3914         ;;
3915     netbsd)
3916         disable symver
3917         oss_indev_extralibs="-lossaudio"
3918         ;;
3919     openbsd|bitrig)
3920         disable symver
3921         SHFLAGS='-shared'
3922         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3923         SLIB_INSTALL_LINKS=
3924         oss_indev_extralibs="-lossaudio"
3925         ;;
3926     dragonfly)
3927         disable symver
3928         ;;
3929     freebsd)
3930         ;;
3931     bsd/os)
3932         add_extralibs -lpoll -lgnugetopt
3933         ;;
3934     darwin)
3935         enabled ppc && add_asflags -force_cpusubtype_ALL
3936         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3937         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3938         add_ldflags -Wl,-dynamic,-search_paths_first
3939         check_cflags -Werror=partial-availability
3940         SLIBSUF=".dylib"
3941         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME).$(LIBVERSION)$(SLIBSUF)'
3942         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME).$(LIBMAJOR)$(SLIBSUF)'
3943         enabled x86_64 && objformat="macho64" || objformat="macho32"
3944         enabled_any pic shared ||
3945             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3946         check_header dispatch/dispatch.h &&
3947             add_cppflags '-I\$(SRC_PATH)/compat/dispatch_semaphore'
3948         if test -n "$sysroot"; then
3949             is_in -isysroot $cc $CPPFLAGS $CFLAGS || check_cppflags -isysroot $sysroot
3950             is_in -isysroot $ld $LDFLAGS          || check_ldflags  -isysroot $sysroot
3951         fi
3952         ;;
3953     msys*)
3954         die "Native MSYS builds are discouraged, please use the MINGW environment."
3955         ;;
3956     mingw32*|mingw64*)
3957         target_os=mingw32
3958         LIBTARGET=i386
3959         if enabled x86_64; then
3960             LIBTARGET="i386:x86-64"
3961         elif enabled arm; then
3962             LIBTARGET="arm"
3963         elif enabled aarch64; then
3964             LIBTARGET="arm64"
3965         fi
3966         if enabled shared; then
3967             # Cannot build both shared and static libs when using dllimport.
3968             disable static
3969         fi
3970         check_ldflags -Wl,--nxcompat
3971         check_ldflags -Wl,--dynamicbase
3972         shlibdir_default="$bindir_default"
3973         SLIBPREF=""
3974         SLIBSUF=".dll"
3975         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3976         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
3977         SLIB_EXTRA_CMD=-'$(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3978         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3979         SLIB_INSTALL_LINKS=
3980         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3981         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3982         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" AR="$(AR_CMD)" NM="$(NM_CMD)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3983         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-auto-image-base $$(@:$(SLIBSUF)=.def)'
3984         enabled x86_64 && objformat="win64" || objformat="win32"
3985         dlltool="${cross_prefix}dlltool"
3986         ranlib=:
3987         enable dos_paths
3988         ;;
3989     win32|win64)
3990         disable symver
3991         if enabled shared; then
3992             # Link to the import library instead of the normal static library
3993             # for shared libs.
3994             LD_LIB='%.lib'
3995             # Cannot build both shared and static libs with MSVC or icl.
3996             disable static
3997         fi
3998         shlibdir_default="$bindir_default"
3999         SLIBPREF=""
4000         SLIBSUF=".dll"
4001         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4002         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4003         SLIB_CREATE_DEF_CMD='EXTERN_PREFIX="$(EXTERN_PREFIX)" $(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4004         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4005         SLIB_INSTALL_LINKS=
4006         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4007         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4008         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4009         enabled x86_64 && objformat="win64" || objformat="win32"
4010         ranlib=:
4011         enable dos_paths
4012         ;;
4013     cygwin*)
4014         target_os=cygwin
4015         shlibdir_default="$bindir_default"
4016         SLIBPREF="cyg"
4017         SLIBSUF=".dll"
4018         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4019         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(NAME)-$(LIBMAJOR)$(SLIBSUF)'
4020         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4021         SLIB_INSTALL_LINKS=
4022         SLIB_INSTALL_EXTRA_LIB='lib$(NAME).dll.a'
4023         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(NAME).dll.a'
4024         enabled x86_64 && objformat="win64" || objformat="win32"
4025         enable dos_paths
4026         ;;
4027     *-dos|freedos|opendos)
4028         network_extralibs="-lsocket"
4029         objformat="coff"
4030         enable dos_paths
4031         add_cppflags -U__STRICT_ANSI__
4032         ;;
4033     linux)
4034         enable section_data_rel_ro
4035         ;;
4036     irix*)
4037         target_os=irix
4038         ranlib="echo ignoring ranlib"
4039         ;;
4040     os/2*)
4041         ln_s="cp -f"
4042         objformat="aout"
4043         add_cppflags -D_GNU_SOURCE
4044         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zhigh-mem -Zmap
4045         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4046         LIBSUF="_s.a"
4047         SLIBPREF=""
4048         SLIBSUF=".dll"
4049         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4050         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4051         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4052             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4053             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4054             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4055             emxexp $(OBJS) >> $(SUBDIR)$(NAME).def'
4056         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4057             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4058         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4059         enable dos_paths
4060         ;;
4061     gnu/kfreebsd)
4062         add_cppflags -D_BSD_SOURCE
4063         ;;
4064     gnu)
4065         ;;
4066     qnx)
4067         add_cppflags -D_QNX_SOURCE
4068         network_extralibs="-lsocket"
4069         ;;
4070     symbian)
4071         SLIBSUF=".dll"
4072         enable dos_paths
4073         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4074         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4075         add_ldflags -Wl,--target1-abs,--no-undefined \
4076                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4077                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4078         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4079                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4080                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4081         ;;
4082     minix)
4083         ;;
4084     none)
4085         ;;
4086     *)
4087         die "Unknown OS '$target_os'."
4088         ;;
4089 esac
4090
4091 # determine libc flavour
4092
4093 probe_libc(){
4094     pfx=$1
4095     pfx_no_=${pfx%_}
4096     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
4097     if test_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
4098         eval ${pfx}libc_type=uclibc
4099         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4100     elif test_${pfx}cpp_condition features.h "defined __GLIBC__"; then
4101         eval ${pfx}libc_type=glibc
4102         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
4103     # MinGW headers can be installed on Cygwin, so check for newlib first.
4104     elif test_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
4105         eval ${pfx}libc_type=newlib
4106         add_${pfx}cppflags -U__STRICT_ANSI__ -D_XOPEN_SOURCE=600
4107     # MinGW64 is backwards compatible with MinGW32, so check for it first.
4108     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
4109         eval ${pfx}libc_type=mingw64
4110         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4111         eval test \$${pfx_no_}cc_type = "gcc" &&
4112             add_${pfx}cppflags -D__printf__=__gnu_printf__
4113     elif test_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
4114          test_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
4115         eval ${pfx}libc_type=mingw32
4116         test_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
4117             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
4118             die "ERROR: MinGW32 runtime version must be >= 3.15."
4119         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
4120         test_${pfx}cpp_condition _mingw.h "__MSVCRT_VERSION__ < 0x0700" &&
4121             add_${pfx}cppflags -D__MSVCRT_VERSION__=0x0700
4122         test_${pfx}cpp_condition windows.h "defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0502" &&
4123             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
4124         eval test \$${pfx_no_}cc_type = "gcc" &&
4125             add_${pfx}cppflags -D__printf__=__gnu_printf__