fate/aic: force simple idct
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg 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 FFMPEG, 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 FFmpeg."
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:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --fatal-warnings         fail if any configure warning is generated
82   --prefix=PREFIX          install in PREFIX [$prefix]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --enable-rpath           use rpath to allow installing libraries in paths
91                            not part of the dynamic linker search path
92
93 Licensing options:
94   --enable-gpl             allow use of GPL code, the resulting libs
95                            and binaries will be under GPL [no]
96   --enable-version3        upgrade (L)GPL to version 3 [no]
97   --enable-nonfree         allow use of nonfree code, the resulting libs
98                            and binaries will be unredistributable [no]
99
100 Configuration options:
101   --disable-static         do not build static libraries [no]
102   --enable-shared          build shared libraries [no]
103   --enable-small           optimize for size instead of speed
104   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
105   --enable-gray            enable full grayscale support (slower color)
106   --disable-swscale-alpha  disable alpha channel support in swscale
107   --disable-all            disable building components, libraries and programs
108   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
109   --enable-raise-major     increase major version numbers in sonames [no]
110
111 Program options:
112   --disable-programs       do not build command line programs
113   --disable-ffmpeg         disable ffmpeg build
114   --disable-ffplay         disable ffplay build
115   --disable-ffprobe        disable ffprobe build
116   --disable-ffserver       disable ffserver build
117
118 Documentation options:
119   --disable-doc            do not build documentation
120   --disable-htmlpages      do not build HTML documentation pages
121   --disable-manpages       do not build man documentation pages
122   --disable-podpages       do not build POD documentation pages
123   --disable-txtpages       do not build text documentation pages
124
125 Component options:
126   --disable-avdevice       disable libavdevice build
127   --disable-avcodec        disable libavcodec build
128   --disable-avformat       disable libavformat build
129   --disable-avutil         disable libavutil build
130   --disable-swresample     disable libswresample build
131   --disable-swscale        disable libswscale build
132   --disable-postproc       disable libpostproc build
133   --disable-avfilter       disable libavfilter build
134   --enable-avresample      enable libavresample build [no]
135   --disable-pthreads       disable pthreads [auto]
136   --disable-w32threads     disable Win32 threads [auto]
137   --disable-os2threads     disable OS/2 threads [auto]
138   --disable-network        disable network support [no]
139   --disable-dct            disable DCT code
140   --disable-dwt            disable DWT code
141   --disable-error-resilience disable error resilience code
142   --disable-lsp            disable LSP code
143   --disable-lzo            disable LZO decoder code
144   --disable-mdct           disable MDCT code
145   --disable-rdft           disable RDFT code
146   --disable-fft            disable FFT code
147
148 Hardware accelerators:
149   --disable-dxva2          disable DXVA2 code [autodetect]
150   --disable-vaapi          disable VAAPI code [autodetect]
151   --disable-vda            disable VDA code [autodetect]
152   --disable-vdpau          disable VDPAU code [autodetect]
153
154 Individual component options:
155   --disable-everything     disable all components listed below
156   --disable-encoder=NAME   disable encoder NAME
157   --enable-encoder=NAME    enable encoder NAME
158   --disable-encoders       disable all encoders
159   --disable-decoder=NAME   disable decoder NAME
160   --enable-decoder=NAME    enable decoder NAME
161   --disable-decoders       disable all decoders
162   --disable-hwaccel=NAME   disable hwaccel NAME
163   --enable-hwaccel=NAME    enable hwaccel NAME
164   --disable-hwaccels       disable all hwaccels
165   --disable-muxer=NAME     disable muxer NAME
166   --enable-muxer=NAME      enable muxer NAME
167   --disable-muxers         disable all muxers
168   --disable-demuxer=NAME   disable demuxer NAME
169   --enable-demuxer=NAME    enable demuxer NAME
170   --disable-demuxers       disable all demuxers
171   --enable-parser=NAME     enable parser NAME
172   --disable-parser=NAME    disable parser NAME
173   --disable-parsers        disable all parsers
174   --enable-bsf=NAME        enable bitstream filter NAME
175   --disable-bsf=NAME       disable bitstream filter NAME
176   --disable-bsfs           disable all bitstream filters
177   --enable-protocol=NAME   enable protocol NAME
178   --disable-protocol=NAME  disable protocol NAME
179   --disable-protocols      disable all protocols
180   --enable-indev=NAME      enable input device NAME
181   --disable-indev=NAME     disable input device NAME
182   --disable-indevs         disable input devices
183   --enable-outdev=NAME     enable output device NAME
184   --disable-outdev=NAME    disable output device NAME
185   --disable-outdevs        disable output devices
186   --disable-devices        disable all devices
187   --enable-filter=NAME     enable filter NAME
188   --disable-filter=NAME    disable filter NAME
189   --disable-filters        disable all filters
190
191 External library support:
192   --enable-avisynth        enable reading of AviSynth script files [no]
193   --disable-bzlib          disable bzlib [autodetect]
194   --enable-fontconfig      enable fontconfig
195   --enable-frei0r          enable frei0r video filtering
196   --enable-gnutls          enable gnutls [no]
197   --disable-iconv          disable iconv [autodetect]
198   --enable-ladspa          enable LADSPA audio filtering
199   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
200   --enable-libass          enable libass subtitles rendering [no]
201   --enable-libbluray       enable BluRay reading using libbluray [no]
202   --enable-libbs2b         enable bs2b DSP library [no]
203   --enable-libcaca         enable textual display using libcaca
204   --enable-libcelt         enable CELT decoding via libcelt [no]
205   --enable-libcdio         enable audio CD grabbing with libcdio
206   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
207                            and libraw1394 [no]
208   --enable-libfaac         enable AAC encoding via libfaac [no]
209   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
210   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
211   --enable-libfreetype     enable libfreetype [no]
212   --enable-libgme          enable Game Music Emu via libgme [no]
213   --enable-libgsm          enable GSM de/encoding via libgsm [no]
214   --enable-libiec61883     enable iec61883 via libiec61883 [no]
215   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
216   --enable-libmodplug      enable ModPlug via libmodplug [no]
217   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
218   --enable-libnut          enable NUT (de)muxing via libnut,
219                            native (de)muxer exists [no]
220   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
221   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
222   --enable-libopencv       enable video filtering via libopencv [no]
223   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
224   --enable-libopus         enable Opus de/encoding via libopus [no]
225   --enable-libpulse        enable Pulseaudio input via libpulse [no]
226   --enable-libquvi         enable quvi input via libquvi [no]
227   --enable-librtmp         enable RTMP[E] support via librtmp [no]
228   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
229   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
230   --enable-libsoxr         enable Include libsoxr resampling [no]
231   --enable-libspeex        enable Speex de/encoding via libspeex [no]
232   --enable-libssh          enable SFTP protocol via libssh [no]
233   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
234   --enable-libtheora       enable Theora encoding via libtheora [no]
235   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
236   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
237   --enable-libv4l2         enable libv4l2/v4l-utils [no]
238   --enable-libvidstab      enable video stabilization using vid.stab [no]
239   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
240   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
241   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
242                            native implementation exists [no]
243   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
244   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
245   --enable-libwebp         enable WebP encoding via libwebp [no]
246   --enable-libx264         enable H.264 encoding via x264 [no]
247   --enable-libx265         enable HEVC encoding via x265 [no]
248   --enable-libxavs         enable AVS encoding via xavs [no]
249   --enable-libxvid         enable Xvid encoding via xvidcore,
250                            native MPEG-4/Xvid encoder exists [no]
251   --enable-libzmq          enable message passing via libzmq [no]
252   --enable-libzvbi         enable teletext support via libzvbi [no]
253   --enable-decklink        enable Blackmagick DeckLink output [no]
254   --enable-openal          enable OpenAL 1.1 capture support [no]
255   --enable-opencl          enable OpenCL code
256   --enable-opengl          enable OpenGL rendering [no]
257   --enable-openssl         enable openssl [no]
258   --enable-x11grab         enable X11 grabbing [no]
259   --disable-xlib           disable xlib [autodetect]
260   --disable-zlib           disable zlib [autodetect]
261
262 Toolchain options:
263   --arch=ARCH              select architecture [$arch]
264   --cpu=CPU                select the minimum required CPU (affects
265                            instruction selection, may crash on older CPUs)
266   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
267   --progs-suffix=SUFFIX    program name suffix []
268   --enable-cross-compile   assume a cross-compiler is used
269   --sysroot=PATH           root of cross-build tree
270   --sysinclude=PATH        location of cross-build system headers
271   --target-os=OS           compiler targets OS [$target_os]
272   --target-exec=CMD        command to run executables on target
273   --target-path=DIR        path to view of build directory on target
274   --target-samples=DIR     path to samples directory on target
275   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
276   --toolchain=NAME         set tool defaults according to NAME
277   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
278   --nm=NM                  use nm tool NM [$nm_default]
279   --ar=AR                  use archive tool AR [$ar_default]
280   --as=AS                  use assembler AS [$as_default]
281   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
282   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
283   --cc=CC                  use C compiler CC [$cc_default]
284   --cxx=CXX                use C compiler CXX [$cxx_default]
285   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
286   --ld=LD                  use linker LD [$ld_default]
287   --pkg-config=PKGCONF     use pkg-config PKGCONF [$pkg_config_default]
288   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
289   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
290   --host-cc=HOSTCC         use host C compiler HOSTCC
291   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
292   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
293   --host-ld=HOSTLD         use host linker HOSTLD
294   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
295   --host-libs=HLIBS        use libs HLIBS when linking for host
296   --host-os=OS             compiler host OS [$target_os]
297   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
298   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
299   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
300   --extra-libs=ELIBS       add ELIBS [$ELIBS]
301   --extra-version=STRING   version string suffix []
302   --optflags=OPTFLAGS      override optimization-related compiler flags
303   --build-suffix=SUFFIX    library name suffix []
304   --enable-pic             build position-independent code
305   --enable-thumb           compile for Thumb instruction set
306   --enable-lto             use link-time optimization
307
308 Advanced options (experts only):
309   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
310   --disable-symver         disable symbol versioning
311   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
312   --disable-safe-bitstream-reader
313                            disable buffer boundary checking in bitreaders
314                            (faster, but may crash)
315   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
316   --enable-sram            allow use of on-chip SRAM
317   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
318
319 Optimization options (experts only):
320   --disable-asm            disable all assembler optimizations
321   --disable-altivec        disable AltiVec optimizations
322   --disable-amd3dnow       disable 3DNow! optimizations
323   --disable-amd3dnowext    disable 3DNow! extended optimizations
324   --disable-mmx            disable MMX optimizations
325   --disable-mmxext         disable MMXEXT optimizations
326   --disable-sse            disable SSE optimizations
327   --disable-sse2           disable SSE2 optimizations
328   --disable-sse3           disable SSE3 optimizations
329   --disable-ssse3          disable SSSE3 optimizations
330   --disable-sse4           disable SSE4 optimizations
331   --disable-sse42          disable SSE4.2 optimizations
332   --disable-avx            disable AVX optimizations
333   --disable-xop            disable XOP optimizations
334   --disable-fma3           disable FMA3 optimizations
335   --disable-fma4           disable FMA4 optimizations
336   --disable-avx2           disable AVX2 optimizations
337   --disable-armv5te        disable armv5te optimizations
338   --disable-armv6          disable armv6 optimizations
339   --disable-armv6t2        disable armv6t2 optimizations
340   --disable-vfp            disable VFP optimizations
341   --disable-neon           disable NEON optimizations
342   --disable-inline-asm     disable use of inline assembler
343   --disable-yasm           disable use of yasm assembler
344   --disable-mips32r2       disable MIPS32R2 optimizations
345   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
346   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
347   --disable-mipsfpu        disable floating point MIPS optimizations
348   --disable-fast-unaligned consider unaligned accesses slow
349
350 Developer options (useful when working on FFmpeg itself):
351   --disable-debug          disable debugging symbols
352   --enable-debug=LEVEL     set the debug level [$debuglevel]
353   --disable-optimizations  disable compiler optimizations
354   --enable-extra-warnings  enable more compiler warnings
355   --disable-stripping      disable stripping of executables and shared libraries
356   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
357                            2 causes a slowdown at runtime.
358   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
359   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
360                            leaks and errors, using the specified valgrind binary.
361                            Cannot be combined with --target-exec
362   --enable-ftrapv          Trap arithmetic overflows
363   --samples=PATH           location of test samples for FATE, if not set use
364                            \$FATE_SAMPLES at make invocation time.
365   --enable-neon-clobber-test check NEON registers for clobbering (should be
366                            used only for debugging purposes)
367   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
368                            should be used only for debugging purposes)
369   --enable-random          randomly enable/disable components
370   --disable-random
371   --enable-random=LIST     randomly enable/disable specific components or
372   --disable-random=LIST    component groups. LIST is a comma-separated list
373                            of NAME[:PROB] entries where NAME is a component
374                            (group) and PROB the probability associated with
375                            NAME (default 0.5).
376   --random-seed=VALUE      seed value for --enable/disable-random
377
378 NOTE: Object files are built at the place where configure is launched.
379 EOF
380   exit 0
381 }
382
383 quotes='""'
384
385 log(){
386     echo "$@" >> $logfile
387 }
388
389 log_file(){
390     log BEGIN $1
391     pr -n -t $1 >> $logfile
392     log END $1
393 }
394
395 echolog(){
396     log "$@"
397     echo "$@"
398 }
399
400 warn(){
401     log "WARNING: $*"
402     WARNINGS="${WARNINGS}WARNING: $*\n"
403 }
404
405 die(){
406     echolog "$@"
407     cat <<EOF
408
409 If you think configure made a mistake, make sure you are using the latest
410 version from Git.  If the latest version fails, report the problem to the
411 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
412 EOF
413     if disabled logging; then
414         cat <<EOF
415 Rerun configure with logging enabled (do not use --disable-logging), and
416 include the log this produces with your report.
417 EOF
418     else
419         cat <<EOF
420 Include the log file "$logfile" produced by configure as this will help
421 solve the problem.
422 EOF
423     fi
424     exit 1
425 }
426
427 # Avoid locale weirdness, besides we really just want to translate ASCII.
428 toupper(){
429     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
430 }
431
432 tolower(){
433     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
434 }
435
436 c_escape(){
437     echo "$*" | sed 's/["\\]/\\\0/g'
438 }
439
440 sh_quote(){
441     v=$(echo "$1" | sed "s/'/'\\\\''/g")
442     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
443     echo "$v"
444 }
445
446 cleanws(){
447     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
448 }
449
450 filter(){
451     pat=$1
452     shift
453     for v; do
454         eval "case $v in $pat) echo $v ;; esac"
455     done
456 }
457
458 filter_out(){
459     pat=$1
460     shift
461     for v; do
462         eval "case $v in $pat) ;; *) echo $v ;; esac"
463     done
464 }
465
466 map(){
467     m=$1
468     shift
469     for v; do eval $m; done
470 }
471
472 add_suffix(){
473     suffix=$1
474     shift
475     for v; do echo ${v}${suffix}; done
476 }
477
478 set_all(){
479     value=$1
480     shift
481     for var in $*; do
482         eval $var=$value
483     done
484 }
485
486 set_weak(){
487     value=$1
488     shift
489     for var; do
490         eval : \${$var:=$value}
491     done
492 }
493
494 sanitize_var_name(){
495     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
496 }
497
498 set_safe(){
499     var=$1
500     shift
501     eval $(sanitize_var_name "$var")='$*'
502 }
503
504 get_safe(){
505     eval echo \$$(sanitize_var_name "$1")
506 }
507
508 pushvar(){
509     for pvar in $*; do
510         eval level=\${${pvar}_level:=0}
511         eval ${pvar}_${level}="\$$pvar"
512         eval ${pvar}_level=$(($level+1))
513     done
514 }
515
516 popvar(){
517     for pvar in $*; do
518         eval level=\${${pvar}_level:-0}
519         test $level = 0 && continue
520         eval level=$(($level-1))
521         eval $pvar="\${${pvar}_${level}}"
522         eval ${pvar}_level=$level
523         eval unset ${pvar}_${level}
524     done
525 }
526
527 enable(){
528     set_all yes $*
529 }
530
531 disable(){
532     set_all no $*
533 }
534
535 enable_weak(){
536     set_weak yes $*
537 }
538
539 disable_weak(){
540     set_weak no $*
541 }
542
543 enable_safe(){
544     for var; do
545         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
546     done
547 }
548
549 disable_safe(){
550     for var; do
551         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
552     done
553 }
554
555 do_enable_deep(){
556     for var; do
557         enabled $var && continue
558         eval sel="\$${var}_select"
559         eval sgs="\$${var}_suggest"
560         pushvar var sgs
561         enable_deep $sel
562         popvar sgs
563         enable_deep_weak $sgs
564         popvar var
565     done
566 }
567
568 enable_deep(){
569     do_enable_deep $*
570     enable $*
571 }
572
573 enable_deep_weak(){
574     for var; do
575         disabled $var && continue
576         pushvar var
577         do_enable_deep $var
578         popvar var
579         enable_weak $var
580     done
581 }
582
583 enabled(){
584     test "${1#!}" = "$1" && op== || op=!=
585     eval test "x\$${1#!}" $op "xyes"
586 }
587
588 disabled(){
589     test "${1#!}" = "$1" && op== || op=!=
590     eval test "x\$${1#!}" $op "xno"
591 }
592
593 enabled_all(){
594     for opt; do
595         enabled $opt || return 1
596     done
597 }
598
599 disabled_all(){
600     for opt; do
601         disabled $opt || return 1
602     done
603 }
604
605 enabled_any(){
606     for opt; do
607         enabled $opt && return 0
608     done
609 }
610
611 disabled_any(){
612     for opt; do
613         disabled $opt && return 0
614     done
615     return 1
616 }
617
618 set_default(){
619     for opt; do
620         eval : \${$opt:=\$${opt}_default}
621     done
622 }
623
624 is_in(){
625     value=$1
626     shift
627     for var in $*; do
628         [ $var = $value ] && return 0
629     done
630     return 1
631 }
632
633 do_check_deps(){
634     for cfg; do
635         cfg="${cfg#!}"
636         enabled ${cfg}_checking && die "Circular dependency for $cfg."
637         disabled ${cfg}_checking && continue
638         enable ${cfg}_checking
639         append allopts $cfg
640
641         eval dep_all="\$${cfg}_deps"
642         eval dep_any="\$${cfg}_deps_any"
643         eval dep_sel="\$${cfg}_select"
644         eval dep_sgs="\$${cfg}_suggest"
645         eval dep_ifa="\$${cfg}_if"
646         eval dep_ifn="\$${cfg}_if_any"
647
648         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
649         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
650         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
651
652         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
653         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
654         enabled_all  $dep_all || disable $cfg
655         enabled_any  $dep_any || disable $cfg
656         disabled_any $dep_sel && disable $cfg
657
658         if enabled $cfg; then
659             enable_deep $dep_sel
660             enable_deep_weak $dep_sgs
661         fi
662
663         disable ${cfg}_checking
664     done
665 }
666
667 check_deps(){
668     unset allopts
669
670     do_check_deps "$@"
671
672     for cfg in $allopts; do
673         enabled $cfg || continue
674         eval dep_extralibs="\$${cfg}_extralibs"
675         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
676     done
677 }
678
679 print_config(){
680     pfx=$1
681     files=$2
682     shift 2
683     map 'eval echo "$v \${$v:-no}"' "$@" |
684     awk "BEGIN { split(\"$files\", files) }
685         {
686             c = \"$pfx\" toupper(\$1);
687             v = \$2;
688             sub(/yes/, 1, v);
689             sub(/no/,  0, v);
690             for (f in files) {
691                 file = files[f];
692                 if (file ~ /\\.h\$/) {
693                     printf(\"#define %s %d\\n\", c, v) >>file;
694                 } else if (file ~ /\\.asm\$/) {
695                     printf(\"%%define %s %d\\n\", c, v) >>file;
696                 } else if (file ~ /\\.mak\$/) {
697                     n = -v ? \"\" : \"!\";
698                     printf(\"%s%s=yes\\n\", n, c) >>file;
699                 } else if (file ~ /\\.texi\$/) {
700                     pre = -v ? \"\" : \"@c \";
701                     yesno = \$2;
702                     c2 = tolower(c);
703                     gsub(/_/, \"-\", c2);
704                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
705                 }
706             }
707         }"
708 }
709
710 print_enabled(){
711     suf=$1
712     shift
713     for v; do
714         enabled $v && printf "%s\n" ${v%$suf};
715     done
716 }
717
718 append(){
719     var=$1
720     shift
721     eval "$var=\"\$$var $*\""
722 }
723
724 prepend(){
725     var=$1
726     shift
727     eval "$var=\"$* \$$var\""
728 }
729
730 unique(){
731     var=$1
732     uniq_list=""
733     for tok in $(eval echo \$$var); do
734         uniq_list="$(filter_out $tok $uniq_list) $tok"
735     done
736     eval "$var=\"${uniq_list}\""
737 }
738
739 add_cppflags(){
740     append CPPFLAGS "$@"
741 }
742
743 add_cflags(){
744     append CFLAGS $($cflags_filter "$@")
745 }
746
747 add_cxxflags(){
748     append CXXFLAGS $($cflags_filter "$@")
749 }
750
751 add_asflags(){
752     append ASFLAGS $($asflags_filter "$@")
753 }
754
755 add_ldflags(){
756     append LDFLAGS $($ldflags_filter "$@")
757 }
758
759 add_stripflags(){
760     append ASMSTRIPFLAGS "$@"
761 }
762
763 add_extralibs(){
764     prepend extralibs $($ldflags_filter "$@")
765 }
766
767 add_host_cppflags(){
768     append host_cppflags "$@"
769 }
770
771 add_host_cflags(){
772     append host_cflags $($host_cflags_filter "$@")
773 }
774
775 add_host_ldflags(){
776     append host_ldflags $($host_ldflags_filter "$@")
777 }
778
779 add_compat(){
780     append compat_objs $1
781     shift
782     map 'add_cppflags -D$v' "$@"
783 }
784
785 check_cmd(){
786     log "$@"
787     "$@" >> $logfile 2>&1
788 }
789
790 check_stat(){
791     log check_stat "$@"
792     stat "$1" >> $logfile 2>&1
793 }
794
795 cc_o(){
796     eval printf '%s\\n' $CC_O
797 }
798
799 cc_e(){
800     eval printf '%s\\n' $CC_E
801 }
802
803 check_cc(){
804     log check_cc "$@"
805     cat > $TMPC
806     log_file $TMPC
807     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
808 }
809
810 check_cxx(){
811     log check_cxx "$@"
812     cat > $TMPCPP
813     log_file $TMPCPP
814     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
815 }
816
817 check_oc(){
818     log check_oc "$@"
819     cat > $TMPM
820     log_file $TMPM
821     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
822 }
823
824 check_cpp(){
825     log check_cpp "$@"
826     cat > $TMPC
827     log_file $TMPC
828     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
829 }
830
831 as_o(){
832     eval printf '%s\\n' $AS_O
833 }
834
835 check_as(){
836     log check_as "$@"
837     cat > $TMPS
838     log_file $TMPS
839     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
840 }
841
842 check_inline_asm(){
843     log check_inline_asm "$@"
844     name="$1"
845     code="$2"
846     shift 2
847     disable $name
848     check_cc "$@" <<EOF && enable $name
849 void foo(void){ __asm__ volatile($code); }
850 EOF
851 }
852
853 check_insn(){
854     log check_insn "$@"
855     check_inline_asm ${1}_inline "\"$2\""
856     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
857 }
858
859 check_yasm(){
860     log check_yasm "$@"
861     echo "$1" > $TMPS
862     log_file $TMPS
863     shift 1
864     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
865 }
866
867 ld_o(){
868     eval printf '%s\\n' $LD_O
869 }
870
871 check_ld(){
872     log check_ld "$@"
873     type=$1
874     shift 1
875     flags=$(filter_out '-l*|*.so' $@)
876     libs=$(filter '-l*|*.so' $@)
877     check_$type $($cflags_filter $flags) || return
878     flags=$($ldflags_filter $flags)
879     libs=$($ldflags_filter $libs)
880     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
881 }
882
883 print_include(){
884     hdr=$1
885     test "${hdr%.h}" = "${hdr}" &&
886         echo "#include $hdr"    ||
887         echo "#include <$hdr>"
888 }
889
890 check_code(){
891     log check_code "$@"
892     check=$1
893     headers=$2
894     code=$3
895     shift 3
896     {
897         for hdr in $headers; do
898             print_include $hdr
899         done
900         echo "int main(void) { $code; return 0; }"
901     } | check_$check "$@"
902 }
903
904 check_cppflags(){
905     log check_cppflags "$@"
906     check_cc "$@" <<EOF && append CPPFLAGS "$@"
907 int x;
908 EOF
909 }
910
911 test_cflags(){
912     log test_cflags "$@"
913     set -- $($cflags_filter "$@")
914     check_cc "$@" <<EOF
915 int x;
916 EOF
917 }
918
919 check_cflags(){
920     log check_cflags "$@"
921     test_cflags "$@" && add_cflags "$@"
922 }
923
924 check_cxxflags(){
925     log check_cxxflags "$@"
926     set -- $($cflags_filter "$@")
927     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
928 int x;
929 EOF
930 }
931
932 test_ldflags(){
933     log test_ldflags "$@"
934     check_ld "cc" "$@" <<EOF
935 int main(void){ return 0; }
936 EOF
937 }
938
939 check_ldflags(){
940     log check_ldflags "$@"
941     test_ldflags "$@" && add_ldflags "$@"
942 }
943
944 test_stripflags(){
945     log test_stripflags "$@"
946     # call check_cc to get a fresh TMPO
947     check_cc <<EOF
948 int main(void) { return 0; }
949 EOF
950     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
951 }
952
953 check_stripflags(){
954     log check_stripflags "$@"
955     test_stripflags "$@" && add_stripflags "$@"
956 }
957
958 check_header(){
959     log check_header "$@"
960     header=$1
961     shift
962     disable_safe $header
963     check_cpp "$@" <<EOF && enable_safe $header
964 #include <$header>
965 int x;
966 EOF
967 }
968
969 check_header_oc(){
970     log check_header_oc "$@"
971     rm -f -- "$TMPO"
972     header=$1
973     shift
974     disable_safe $header
975     {
976        echo "#include <$header>"
977        echo "int main(void) { return 0; }"
978     } | check_oc && check_stat "$TMPO" && enable_safe $headers
979 }
980
981 check_func(){
982     log check_func "$@"
983     func=$1
984     shift
985     disable $func
986     check_ld "cc" "$@" <<EOF && enable $func
987 extern int $func();
988 int main(void){ $func(); }
989 EOF
990 }
991
992 check_mathfunc(){
993     log check_mathfunc "$@"
994     func=$1
995     narg=$2
996     shift 2
997     test $narg = 2 && args="f, g" || args="f"
998     disable $func
999     check_ld "cc" "$@" <<EOF && enable $func
1000 #include <math.h>
1001 float foo(float f, float g) { return $func($args); }
1002 int main(void){ return (int) foo; }
1003 EOF
1004 }
1005
1006 check_func_headers(){
1007     log check_func_headers "$@"
1008     headers=$1
1009     funcs=$2
1010     shift 2
1011     {
1012         for hdr in $headers; do
1013             print_include $hdr
1014         done
1015         for func in $funcs; do
1016             echo "long check_$func(void) { return (long) $func; }"
1017         done
1018         echo "int main(void) { return 0; }"
1019     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1020 }
1021
1022 check_class_headers_cpp(){
1023     log check_class_headers_cpp "$@"
1024     headers=$1
1025     classes=$2
1026     shift 2
1027     {
1028         for hdr in $headers; do
1029             echo "#include <$hdr>"
1030         done
1031         echo "int main(void) { "
1032         i=1
1033         for class in $classes; do
1034             echo "$class obj$i;"
1035             i=$(expr $i + 1)
1036         done
1037         echo "return 0; }"
1038     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1039 }
1040
1041 check_cpp_condition(){
1042     log check_cpp_condition "$@"
1043     header=$1
1044     condition=$2
1045     shift 2
1046     check_cpp "$@" <<EOF
1047 #include <$header>
1048 #if !($condition)
1049 #error "unsatisfied condition: $condition"
1050 #endif
1051 EOF
1052 }
1053
1054 check_lib(){
1055     log check_lib "$@"
1056     header="$1"
1057     func="$2"
1058     shift 2
1059     check_header $header && check_func $func "$@" && add_extralibs "$@"
1060 }
1061
1062 check_lib2(){
1063     log check_lib2 "$@"
1064     headers="$1"
1065     funcs="$2"
1066     shift 2
1067     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1068 }
1069
1070 check_lib_cpp(){
1071     log check_lib_cpp "$@"
1072     headers="$1"
1073     classes="$2"
1074     shift 2
1075     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1076 }
1077
1078 check_pkg_config(){
1079     log check_pkg_config "$@"
1080     pkgandversion="$1"
1081     pkg="${1%% *}"
1082     headers="$2"
1083     funcs="$3"
1084     shift 3
1085     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1086     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1087     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1088     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1089         set_safe ${pkg}_cflags $pkg_cflags   &&
1090         set_safe ${pkg}_libs   $pkg_libs
1091 }
1092
1093 check_exec(){
1094     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1095 }
1096
1097 check_exec_crash(){
1098     code=$(cat)
1099
1100     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1101     # are safe but may not be available everywhere.  Thus we use
1102     # raise(SIGTERM) instead.  The check is run in a subshell so we
1103     # can redirect the "Terminated" message from the shell.  SIGBUS
1104     # is not defined by standard C so it is used conditionally.
1105
1106     (check_exec "$@") >> $logfile 2>&1 <<EOF
1107 #include <signal.h>
1108 static void sighandler(int sig){
1109     raise(SIGTERM);
1110 }
1111 int foo(void){
1112     $code
1113 }
1114 int (*func_ptr)(void) = foo;
1115 int main(void){
1116     signal(SIGILL, sighandler);
1117     signal(SIGFPE, sighandler);
1118     signal(SIGSEGV, sighandler);
1119 #ifdef SIGBUS
1120     signal(SIGBUS, sighandler);
1121 #endif
1122     return func_ptr();
1123 }
1124 EOF
1125 }
1126
1127 check_type(){
1128     log check_type "$@"
1129     headers=$1
1130     type=$2
1131     shift 2
1132     disable_safe "$type"
1133     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1134 }
1135
1136 check_struct(){
1137     log check_struct "$@"
1138     headers=$1
1139     struct=$2
1140     member=$3
1141     shift 3
1142     disable_safe "${struct}_${member}"
1143     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1144         enable_safe "${struct}_${member}"
1145 }
1146
1147 check_builtin(){
1148     log check_builtin "$@"
1149     name=$1
1150     headers=$2
1151     builtin=$3
1152     shift 3
1153     disable "$name"
1154     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1155 }
1156
1157 check_compile_assert(){
1158     log check_compile_assert "$@"
1159     name=$1
1160     headers=$2
1161     condition=$3
1162     shift 3
1163     disable "$name"
1164     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1165 }
1166
1167 require(){
1168     name="$1"
1169     header="$2"
1170     func="$3"
1171     shift 3
1172     check_lib $header $func "$@" || die "ERROR: $name not found"
1173 }
1174
1175 require2(){
1176     name="$1"
1177     headers="$2"
1178     func="$3"
1179     shift 3
1180     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1181 }
1182
1183 require_cpp(){
1184     name="$1"
1185     headers="$2"
1186     classes="$3"
1187     shift 3
1188     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1189 }
1190
1191 require_pkg_config(){
1192     pkg="$1"
1193     check_pkg_config "$@" || die "ERROR: $pkg not found"
1194     add_cflags    $(get_safe ${pkg}_cflags)
1195     add_extralibs $(get_safe ${pkg}_libs)
1196 }
1197
1198 require_libfreetype(){
1199     log require_libfreetype "$@"
1200     pkg="freetype2"
1201     check_cmd $pkg_config --exists --print-errors $pkg \
1202       || die "ERROR: $pkg not found"
1203     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1204     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1205     {
1206         echo "#include <ft2build.h>"
1207         echo "#include FT_FREETYPE_H"
1208         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1209         echo "int main(void) { return 0; }"
1210     } | check_ld "cc" $pkg_cflags $pkg_libs \
1211       && set_safe ${pkg}_cflags $pkg_cflags \
1212       && set_safe ${pkg}_libs   $pkg_libs \
1213       || die "ERROR: $pkg not found"
1214     add_cflags    $(get_safe ${pkg}_cflags)
1215     add_extralibs $(get_safe ${pkg}_libs)
1216 }
1217
1218 hostcc_e(){
1219     eval printf '%s\\n' $HOSTCC_E
1220 }
1221
1222 hostcc_o(){
1223     eval printf '%s\\n' $HOSTCC_O
1224 }
1225
1226 check_host_cc(){
1227     log check_host_cc "$@"
1228     cat > $TMPC
1229     log_file $TMPC
1230     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1231 }
1232
1233 check_host_cpp(){
1234     log check_host_cpp "$@"
1235     cat > $TMPC
1236     log_file $TMPC
1237     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1238 }
1239
1240 check_host_cppflags(){
1241     log check_host_cppflags "$@"
1242     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1243 int x;
1244 EOF
1245 }
1246
1247 check_host_cflags(){
1248     log check_host_cflags "$@"
1249     set -- $($host_cflags_filter "$@")
1250     check_host_cc "$@" <<EOF && append host_cflags "$@"
1251 int x;
1252 EOF
1253 }
1254
1255 check_host_cpp_condition(){
1256     log check_host_cpp_condition "$@"
1257     header=$1
1258     condition=$2
1259     shift 2
1260     check_host_cpp "$@" <<EOF
1261 #include <$header>
1262 #if !($condition)
1263 #error "unsatisfied condition: $condition"
1264 #endif
1265 EOF
1266 }
1267
1268 apply(){
1269     file=$1
1270     shift
1271     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1272 }
1273
1274 cp_if_changed(){
1275     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1276     mkdir -p "$(dirname $2)"
1277     $cp_f "$1" "$2"
1278 }
1279
1280 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1281 # system-dependent things.
1282
1283 COMPONENT_LIST="
1284     bsfs
1285     decoders
1286     demuxers
1287     encoders
1288     filters
1289     hwaccels
1290     indevs
1291     muxers
1292     outdevs
1293     parsers
1294     protocols
1295 "
1296
1297 EXAMPLE_LIST="
1298     avio_reading_example
1299     decoding_encoding_example
1300     demuxing_decoding_example
1301     filter_audio_example
1302     filtering_audio_example
1303     filtering_video_example
1304     metadata_example
1305     muxing_example
1306     remuxing_example
1307     resampling_audio_example
1308     scaling_video_example
1309     transcode_aac_example
1310     transcoding_example
1311 "
1312
1313 EXTERNAL_LIBRARY_LIST="
1314     avisynth
1315     bzlib
1316     crystalhd
1317     decklink
1318     frei0r
1319     gnutls
1320     iconv
1321     ladspa
1322     libaacplus
1323     libass
1324     libbluray
1325     libbs2b
1326     libcaca
1327     libcdio
1328     libcelt
1329     libdc1394
1330     libfaac
1331     libfdk_aac
1332     libflite
1333     libfontconfig
1334     libfreetype
1335     libgme
1336     libgsm
1337     libiec61883
1338     libilbc
1339     libmodplug
1340     libmp3lame
1341     libnut
1342     libopencore_amrnb
1343     libopencore_amrwb
1344     libopencv
1345     libopenjpeg
1346     libopus
1347     libpulse
1348     libquvi
1349     librtmp
1350     libschroedinger
1351     libshine
1352     libsoxr
1353     libspeex
1354     libssh
1355     libstagefright_h264
1356     libtheora
1357     libtwolame
1358     libutvideo
1359     libv4l2
1360     libvidstab
1361     libvo_aacenc
1362     libvo_amrwbenc
1363     libvorbis
1364     libvpx
1365     libwavpack
1366     libwebp
1367     libx264
1368     libx265
1369     libxavs
1370     libxvid
1371     libzmq
1372     libzvbi
1373     openal
1374     opencl
1375     opengl
1376     openssl
1377     x11grab
1378     xlib
1379     zlib
1380 "
1381
1382 DOCUMENT_LIST="
1383     doc
1384     htmlpages
1385     manpages
1386     podpages
1387     txtpages
1388 "
1389
1390 FEATURE_LIST="
1391     ftrapv
1392     gray
1393     hardcoded_tables
1394     runtime_cpudetect
1395     safe_bitstream_reader
1396     shared
1397     small
1398     sram
1399     static
1400     swscale_alpha
1401 "
1402
1403 HWACCEL_LIST="
1404     dxva2
1405     vaapi
1406     vda
1407     vdpau
1408     xvmc
1409 "
1410
1411 LIBRARY_LIST="
1412     avcodec
1413     avdevice
1414     avfilter
1415     avformat
1416     avresample
1417     avutil
1418     postproc
1419     swresample
1420     swscale
1421 "
1422
1423 LICENSE_LIST="
1424     gpl
1425     nonfree
1426     version3
1427 "
1428
1429 PROGRAM_LIST="
1430     ffplay
1431     ffprobe
1432     ffserver
1433     ffmpeg
1434 "
1435
1436 SUBSYSTEM_LIST="
1437     dct
1438     dwt
1439     error_resilience
1440     fast_unaligned
1441     fft
1442     lsp
1443     lzo
1444     mdct
1445     network
1446     rdft
1447 "
1448
1449 CONFIG_LIST="
1450     $COMPONENT_LIST
1451     $DOCUMENT_LIST
1452     $EXAMPLE_LIST
1453     $EXTERNAL_LIBRARY_LIST
1454     $FEATURE_LIST
1455     $HWACCEL_LIST
1456     $LICENSE_LIST
1457     $LIBRARY_LIST
1458     $PROGRAM_LIST
1459     $SUBSYSTEM_LIST
1460     fontconfig
1461     incompatible_libav_abi
1462     memalign_hack
1463     memory_poisoning
1464     neon_clobber_test
1465     pic
1466     pod2man
1467     raise_major
1468     thumb
1469     xmm_clobber_test
1470 "
1471
1472 THREADS_LIST="
1473     pthreads
1474     os2threads
1475     w32threads
1476 "
1477
1478 ATOMICS_LIST="
1479     atomics_gcc
1480     atomics_suncc
1481     atomics_win32
1482 "
1483
1484 ARCH_LIST="
1485     aarch64
1486     alpha
1487     arm
1488     avr32
1489     avr32_ap
1490     avr32_uc
1491     bfin
1492     ia64
1493     m68k
1494     mips
1495     mips64
1496     parisc
1497     ppc
1498     ppc64
1499     s390
1500     sh4
1501     sparc
1502     sparc64
1503     tilegx
1504     tilepro
1505     tomi
1506     x86
1507     x86_32
1508     x86_64
1509 "
1510
1511 ARCH_EXT_LIST_ARM="
1512     armv5te
1513     armv6
1514     armv6t2
1515     armv8
1516     neon
1517     vfp
1518     vfpv3
1519 "
1520
1521 ARCH_EXT_LIST_MIPS="
1522     mipsfpu
1523     mips32r2
1524     mipsdspr1
1525     mipsdspr2
1526 "
1527
1528 ARCH_EXT_LIST_X86_SIMD="
1529     amd3dnow
1530     amd3dnowext
1531     avx
1532     avx2
1533     fma3
1534     fma4
1535     mmx
1536     mmxext
1537     sse
1538     sse2
1539     sse3
1540     sse4
1541     sse42
1542     ssse3
1543     xop
1544 "
1545
1546 ARCH_EXT_LIST_PPC="
1547     altivec
1548     dcbzl
1549     ldbrx
1550     ppc4xx
1551 "
1552
1553 ARCH_EXT_LIST_X86="
1554     $ARCH_EXT_LIST_X86_SIMD
1555     cpunop
1556     i686
1557 "
1558
1559 ARCH_EXT_LIST="
1560     $ARCH_EXT_LIST_ARM
1561     $ARCH_EXT_LIST_PPC
1562     $ARCH_EXT_LIST_X86
1563     $ARCH_EXT_LIST_MIPS
1564     loongson
1565 "
1566
1567 ARCH_FEATURES="
1568     aligned_stack
1569     fast_64bit
1570     fast_clz
1571     fast_cmov
1572     local_aligned_8
1573     local_aligned_16
1574     local_aligned_32
1575 "
1576
1577 BUILTIN_LIST="
1578     atomic_cas_ptr
1579     machine_rw_barrier
1580     MemoryBarrier
1581     mm_empty
1582     rdtsc
1583     sarestart
1584     sync_val_compare_and_swap
1585 "
1586 HAVE_LIST_CMDLINE="
1587     inline_asm
1588     symver
1589     yasm
1590 "
1591
1592 HAVE_LIST_PUB="
1593     bigendian
1594     fast_unaligned
1595     incompatible_libav_abi
1596 "
1597
1598 HEADERS_LIST="
1599     alsa_asoundlib_h
1600     altivec_h
1601     arpa_inet_h
1602     asm_types_h
1603     cdio_paranoia_h
1604     cdio_paranoia_paranoia_h
1605     CL_cl_h
1606     dev_bktr_ioctl_bt848_h
1607     dev_bktr_ioctl_meteor_h
1608     dev_ic_bt8xx_h
1609     dev_video_bktr_ioctl_bt848_h
1610     dev_video_meteor_ioctl_meteor_h
1611     direct_h
1612     dlfcn_h
1613     dxva_h
1614     ES2_gl_h
1615     gsm_h
1616     io_h
1617     mach_mach_time_h
1618     machine_ioctl_bt848_h
1619     machine_ioctl_meteor_h
1620     malloc_h
1621     openjpeg_1_5_openjpeg_h
1622     OpenGL_gl3_h
1623     poll_h
1624     sndio_h
1625     soundcard_h
1626     sys_mman_h
1627     sys_param_h
1628     sys_resource_h
1629     sys_select_h
1630     sys_soundcard_h
1631     sys_time_h
1632     sys_un_h
1633     sys_videoio_h
1634     termios_h
1635     unistd_h
1636     windows_h
1637     winsock2_h
1638 "
1639
1640 MATH_FUNCS="
1641     atanf
1642     atan2f
1643     cbrt
1644     cbrtf
1645     cosf
1646     exp2
1647     exp2f
1648     expf
1649     fminf
1650     isinf
1651     isnan
1652     ldexpf
1653     llrint
1654     llrintf
1655     log2
1656     log2f
1657     log10f
1658     lrint
1659     lrintf
1660     powf
1661     rint
1662     round
1663     roundf
1664     sinf
1665     trunc
1666     truncf
1667 "
1668
1669 SYSTEM_FUNCS="
1670     access
1671     aligned_malloc
1672     clock_gettime
1673     closesocket
1674     CommandLineToArgvW
1675     CoTaskMemFree
1676     CryptGenRandom
1677     dlopen
1678     fcntl
1679     flt_lim
1680     fork
1681     getaddrinfo
1682     gethrtime
1683     getopt
1684     GetProcessAffinityMask
1685     GetProcessMemoryInfo
1686     GetProcessTimes
1687     getrusage
1688     getservbyport
1689     GetSystemTimeAsFileTime
1690     gettimeofday
1691     glob
1692     glXGetProcAddress
1693     inet_aton
1694     isatty
1695     jack_port_get_latency_range
1696     kbhit
1697     localtime_r
1698     lzo1x_999_compress
1699     mach_absolute_time
1700     MapViewOfFile
1701     memalign
1702     mkstemp
1703     mmap
1704     mprotect
1705     nanosleep
1706     PeekNamedPipe
1707     posix_memalign
1708     pthread_cancel
1709     sched_getaffinity
1710     SetConsoleTextAttribute
1711     setmode
1712     setrlimit
1713     Sleep
1714     strerror_r
1715     sysconf
1716     sysctl
1717     usleep
1718     VirtualAlloc
1719     wglGetProcAddress
1720 "
1721
1722 TOOLCHAIN_FEATURES="
1723     as_dn_directive
1724     as_func
1725     asm_mod_q
1726     attribute_may_alias
1727     attribute_packed
1728     ebp_available
1729     ebx_available
1730     gnu_as
1731     gnu_windres
1732     ibm_asm
1733     inline_asm_labels
1734     inline_asm_nonlocal_labels
1735     inline_asm_direct_symbol_refs
1736     pragma_deprecated
1737     rsync_contimeout
1738     symver_asm_label
1739     symver_gnu_asm
1740     vfp_args
1741     xform_asm
1742     xmm_clobbers
1743 "
1744
1745 TYPES_LIST="
1746     socklen_t
1747     struct_addrinfo
1748     struct_group_source_req
1749     struct_ip_mreq_source
1750     struct_ipv6_mreq
1751     struct_pollfd
1752     struct_rusage_ru_maxrss
1753     struct_sctp_event_subscribe
1754     struct_sockaddr_in6
1755     struct_sockaddr_sa_len
1756     struct_sockaddr_storage
1757     struct_stat_st_mtim_tv_nsec
1758     struct_v4l2_frmivalenum_discrete
1759 "
1760
1761 HAVE_LIST="
1762     $ARCH_EXT_LIST
1763     $(add_suffix _external $ARCH_EXT_LIST)
1764     $(add_suffix _inline   $ARCH_EXT_LIST)
1765     $ARCH_FEATURES
1766     $ATOMICS_LIST
1767     $BUILTIN_LIST
1768     $HAVE_LIST_CMDLINE
1769     $HAVE_LIST_PUB
1770     $HEADERS_LIST
1771     $MATH_FUNCS
1772     $SYSTEM_FUNCS
1773     $THREADS_LIST
1774     $TOOLCHAIN_FEATURES
1775     $TYPES_LIST
1776     atomics_native
1777     dos_paths
1778     dxva2api_cobj
1779     dxva2_lib
1780     libc_msvcrt
1781     libdc1394_1
1782     libdc1394_2
1783     makeinfo
1784     perl
1785     pod2man
1786     sdl
1787     texi2html
1788     threads
1789     vdpau_x11
1790     xlib
1791 "
1792
1793 # options emitted with CONFIG_ prefix but not available on the command line
1794 CONFIG_EXTRA="
1795     aandcttables
1796     ac3dsp
1797     audio_frame_queue
1798     cabac
1799     dsputil
1800     exif
1801     frame_thread_encoder
1802     gcrypt
1803     golomb
1804     gplv3
1805     h263dsp
1806     h264chroma
1807     h264dsp
1808     h264pred
1809     h264qpel
1810     hpeldsp
1811     huffman
1812     huffyuvdsp
1813     huffyuvencdsp
1814     intrax8
1815     lgplv3
1816     llauddsp
1817     llviddsp
1818     lpc
1819     mpegaudio
1820     mpegaudiodsp
1821     mpegvideo
1822     mpegvideoenc
1823     nettle
1824     qpeldsp
1825     rangecoder
1826     riffdec
1827     riffenc
1828     rtpdec
1829     rtpenc_chain
1830     sinewin
1831     tpeldsp
1832     videodsp
1833     vp3dsp
1834 "
1835
1836 CMDLINE_SELECT="
1837     $ARCH_EXT_LIST
1838     $CONFIG_LIST
1839     $HAVE_LIST_CMDLINE
1840     $THREADS_LIST
1841     asm
1842     cross_compile
1843     debug
1844     extra_warnings
1845     logging
1846     lto
1847     optimizations
1848     rpath
1849     stripping
1850 "
1851
1852 PATHS_LIST="
1853     bindir
1854     datadir
1855     docdir
1856     incdir
1857     libdir
1858     mandir
1859     prefix
1860     shlibdir
1861 "
1862
1863 CMDLINE_SET="
1864     $PATHS_LIST
1865     ar
1866     arch
1867     as
1868     assert_level
1869     build_suffix
1870     cc
1871     cpu
1872     cross_prefix
1873     cxx
1874     dep_cc
1875     extra_version
1876     gas
1877     host_cc
1878     host_cflags
1879     host_ld
1880     host_ldflags
1881     host_libs
1882     host_os
1883     install
1884     ld
1885     logfile
1886     malloc_prefix
1887     nm
1888     optflags
1889     pkg_config
1890     pkg_config_flags
1891     progs_suffix
1892     random_seed
1893     ranlib
1894     samples
1895     strip
1896     sws_max_filter_size
1897     sysinclude
1898     sysroot
1899     target_exec
1900     target_os
1901     target_path
1902     target_samples
1903     tempprefix
1904     toolchain
1905     valgrind
1906     yasmexe
1907 "
1908
1909 CMDLINE_APPEND="
1910     extra_cflags
1911     extra_cxxflags
1912     host_cppflags
1913 "
1914
1915 # code dependency declarations
1916
1917 # architecture extensions
1918
1919 armv5te_deps="arm"
1920 armv6_deps="arm"
1921 armv6t2_deps="arm"
1922 armv8_deps="aarch64"
1923 neon_deps_any="aarch64 arm"
1924 vfp_deps_any="aarch64 arm"
1925 vfpv3_deps="vfp"
1926
1927 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1928
1929 mipsfpu_deps="mips"
1930 mips32r2_deps="mips"
1931 mipsdspr1_deps="mips"
1932 mipsdspr2_deps="mips"
1933
1934 altivec_deps="ppc"
1935 ppc4xx_deps="ppc"
1936
1937 cpunop_deps="i686"
1938 x86_64_select="i686"
1939 x86_64_suggest="fast_cmov"
1940
1941 amd3dnow_deps="mmx"
1942 amd3dnowext_deps="amd3dnow"
1943 i686_deps="x86"
1944 mmx_deps="x86"
1945 mmxext_deps="mmx"
1946 sse_deps="mmxext"
1947 sse2_deps="sse"
1948 sse3_deps="sse2"
1949 ssse3_deps="sse3"
1950 sse4_deps="ssse3"
1951 sse42_deps="sse4"
1952 avx_deps="sse42"
1953 xop_deps="avx"
1954 fma3_deps="avx"
1955 fma4_deps="avx"
1956 avx2_deps="avx"
1957
1958 mmx_external_deps="yasm"
1959 mmx_inline_deps="inline_asm"
1960 mmx_suggest="mmx_external mmx_inline"
1961
1962 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1963     eval dep=\$${ext}_deps
1964     eval ${ext}_external_deps='"${dep}_external"'
1965     eval ${ext}_inline_deps='"${dep}_inline"'
1966     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1967 done
1968
1969 aligned_stack_if_any="aarch64 ppc x86"
1970 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1971 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1972 fast_unaligned_if_any="aarch64 ppc x86"
1973
1974 need_memalign="altivec neon sse"
1975
1976 # system capabilities
1977
1978 symver_if_any="symver_asm_label symver_gnu_asm"
1979
1980 # threading support
1981 atomics_gcc_if="sync_val_compare_and_swap"
1982 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1983 atomics_win32_if="MemoryBarrier"
1984 atomics_native_if_any="$ATOMICS_LIST"
1985 w32threads_deps="atomics_native"
1986 threads_if_any="$THREADS_LIST"
1987
1988 # subsystems
1989 dct_select="rdft"
1990 error_resilience_select="dsputil"
1991 frame_thread_encoder_deps="encoders threads"
1992 mdct_select="fft"
1993 rdft_select="fft"
1994 mpegaudio_select="mpegaudiodsp"
1995 mpegaudiodsp_select="dct"
1996 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1997 mpegvideoenc_select="dsputil mpegvideo qpeldsp"
1998
1999 # decoders / encoders
2000 aac_decoder_select="mdct sinewin"
2001 aac_encoder_select="audio_frame_queue mdct sinewin"
2002 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2003 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
2004 ac3_fixed_decoder_select="mdct ac3dsp ac3_parser dsputil"
2005 ac3_encoder_select="mdct ac3dsp dsputil"
2006 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
2007 aic_decoder_select="dsputil golomb"
2008 alac_encoder_select="lpc"
2009 als_decoder_select="dsputil"
2010 amrnb_decoder_select="lsp"
2011 amrwb_decoder_select="lsp"
2012 amv_decoder_select="sp5x_decoder exif"
2013 amv_encoder_select="aandcttables"
2014 ape_decoder_select="dsputil llauddsp"
2015 asv1_decoder_select="dsputil"
2016 asv1_encoder_select="dsputil"
2017 asv2_decoder_select="dsputil"
2018 asv2_encoder_select="dsputil"
2019 atrac1_decoder_select="mdct sinewin"
2020 atrac3_decoder_select="mdct"
2021 atrac3p_decoder_select="mdct sinewin"
2022 avrn_decoder_select="exif"
2023 bink_decoder_select="dsputil hpeldsp"
2024 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
2025 binkaudio_rdft_decoder_select="mdct rdft sinewin"
2026 cavs_decoder_select="dsputil golomb h264chroma qpeldsp videodsp"
2027 cllc_decoder_select="dsputil"
2028 comfortnoise_encoder_select="lpc"
2029 cook_decoder_select="dsputil mdct sinewin"
2030 cscd_decoder_select="lzo"
2031 cscd_decoder_suggest="zlib"
2032 dca_decoder_select="mdct"
2033 dirac_decoder_select="dsputil dwt golomb videodsp"
2034 dnxhd_decoder_select="dsputil"
2035 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
2036 dvvideo_decoder_select="dsputil"
2037 dvvideo_encoder_select="dsputil"
2038 dxa_decoder_select="zlib"
2039 eac3_decoder_select="ac3_decoder"
2040 eac3_encoder_select="ac3_encoder"
2041 eamad_decoder_select="aandcttables dsputil mpegvideo"
2042 eatgq_decoder_select="aandcttables"
2043 eatqi_decoder_select="aandcttables dsputil error_resilience mpegvideo"
2044 exr_decoder_select="zlib"
2045 ffv1_decoder_select="golomb rangecoder"
2046 ffv1_encoder_select="rangecoder"
2047 ffvhuff_decoder_select="huffyuv_decoder"
2048 ffvhuff_encoder_select="huffyuv_encoder"
2049 fic_decoder_select="golomb"
2050 flac_decoder_select="golomb"
2051 flac_encoder_select="dsputil golomb lpc"
2052 flashsv_decoder_select="zlib"
2053 flashsv_encoder_select="zlib"
2054 flashsv2_encoder_select="zlib"
2055 flashsv2_decoder_select="zlib"
2056 flv_decoder_select="h263_decoder"
2057 flv_encoder_select="h263_encoder"
2058 fourxm_decoder_select="dsputil"
2059 fraps_decoder_select="dsputil huffman"
2060 g2m_decoder_select="dsputil zlib"
2061 g729_decoder_select="dsputil"
2062 h261_decoder_select="error_resilience mpegvideo"
2063 h261_encoder_select="aandcttables mpegvideoenc"
2064 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo qpeldsp"
2065 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2066 h263i_decoder_select="h263_decoder"
2067 h263p_encoder_select="h263_encoder"
2068 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2069 h264_decoder_suggest="error_resilience"
2070 hevc_decoder_select="cabac dsputil golomb videodsp"
2071 huffyuv_decoder_select="dsputil huffyuvdsp llviddsp"
2072 huffyuv_encoder_select="dsputil huffman huffyuvencdsp llviddsp"
2073 iac_decoder_select="imc_decoder"
2074 imc_decoder_select="dsputil fft mdct sinewin"
2075 indeo3_decoder_select="hpeldsp"
2076 interplay_video_decoder_select="hpeldsp"
2077 jpegls_decoder_select="golomb mjpeg_decoder"
2078 jpegls_encoder_select="golomb"
2079 jv_decoder_select="dsputil"
2080 lagarith_decoder_select="huffyuvdsp"
2081 ljpeg_encoder_select="aandcttables mpegvideoenc"
2082 loco_decoder_select="golomb"
2083 mdec_decoder_select="dsputil error_resilience mpegvideo"
2084 metasound_decoder_select="lsp mdct sinewin"
2085 mimic_decoder_select="dsputil hpeldsp"
2086 mjpeg_decoder_select="dsputil hpeldsp exif"
2087 mjpeg_encoder_select="aandcttables mpegvideoenc"
2088 mjpegb_decoder_select="mjpeg_decoder"
2089 mlp_decoder_select="mlp_parser"
2090 motionpixels_decoder_select="dsputil"
2091 mp1_decoder_select="mpegaudio"
2092 mp1float_decoder_select="mpegaudio"
2093 mp2_decoder_select="mpegaudio"
2094 mp2float_decoder_select="mpegaudio"
2095 mp3_decoder_select="mpegaudio"
2096 mp3adu_decoder_select="mpegaudio"
2097 mp3adufloat_decoder_select="mpegaudio"
2098 mp3float_decoder_select="mpegaudio"
2099 mp3on4_decoder_select="mpegaudio"
2100 mp3on4float_decoder_select="mpegaudio"
2101 mpc7_decoder_select="dsputil mpegaudiodsp"
2102 mpc8_decoder_select="mpegaudiodsp"
2103 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2104 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2105 mpeg1video_decoder_select="error_resilience mpegvideo"
2106 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2107 mpeg2video_decoder_select="error_resilience mpegvideo"
2108 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2109 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2110 mpeg4_encoder_select="h263_encoder"
2111 msmpeg4v1_decoder_select="h263_decoder"
2112 msmpeg4v2_decoder_select="h263_decoder"
2113 msmpeg4v2_encoder_select="h263_encoder"
2114 msmpeg4v3_decoder_select="h263_decoder"
2115 msmpeg4v3_encoder_select="h263_encoder"
2116 mss2_decoder_select="error_resilience qpeldsp vc1_decoder"
2117 mxpeg_decoder_select="mjpeg_decoder"
2118 nellymoser_decoder_select="mdct sinewin"
2119 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2120 nuv_decoder_select="dsputil lzo"
2121 on2avc_decoder_select="mdct"
2122 opus_decoder_deps="swresample"
2123 png_decoder_select="zlib"
2124 png_encoder_select="huffyuvencdsp zlib"
2125 prores_decoder_select="dsputil"
2126 prores_encoder_select="dsputil"
2127 qcelp_decoder_select="lsp"
2128 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2129 ra_144_encoder_select="audio_frame_queue lpc"
2130 ralf_decoder_select="golomb"
2131 rawvideo_decoder_select="dsputil"
2132 rtjpeg_decoder_select="dsputil"
2133 rv10_decoder_select="error_resilience h263_decoder h263dsp"
2134 rv10_encoder_select="h263_encoder"
2135 rv20_decoder_select="error_resilience h263_decoder h263dsp"
2136 rv20_encoder_select="h263_encoder"
2137 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2138 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2139 shorten_decoder_select="golomb"
2140 sipr_decoder_select="lsp"
2141 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
2142 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
2143 sonic_decoder_select="golomb rangecoder"
2144 sonic_encoder_select="golomb rangecoder"
2145 sonic_ls_encoder_select="golomb rangecoder"
2146 sp5x_decoder_select="mjpeg_decoder"
2147 svq1_decoder_select="hpeldsp"
2148 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
2149 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2150 svq3_decoder_suggest="zlib"
2151 tak_decoder_select="dsputil"
2152 theora_decoder_select="vp3_decoder"
2153 thp_decoder_select="mjpeg_decoder"
2154 tiff_decoder_suggest="zlib"
2155 tiff_encoder_suggest="zlib"
2156 truehd_decoder_select="mlp_parser"
2157 truemotion2_decoder_select="dsputil"
2158 truespeech_decoder_select="dsputil"
2159 tscc_decoder_select="zlib"
2160 twinvq_decoder_select="mdct lsp sinewin"
2161 utvideo_decoder_select="dsputil"
2162 utvideo_encoder_select="dsputil huffman huffyuvencdsp"
2163 vble_decoder_select="huffyuvdsp"
2164 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8 qpeldsp"
2165 vc1image_decoder_select="vc1_decoder"
2166 vorbis_decoder_select="mdct"
2167 vorbis_encoder_select="mdct"
2168 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2169 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2170 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2171 vp6a_decoder_select="vp6_decoder"
2172 vp6f_decoder_select="vp6_decoder"
2173 vp7_decoder_select="h264pred videodsp"
2174 vp8_decoder_select="h264pred videodsp"
2175 vp9_decoder_select="videodsp vp9_parser"
2176 webp_decoder_select="vp8_decoder"
2177 wmalossless_decoder_select="llauddsp"
2178 wmapro_decoder_select="mdct sinewin"
2179 wmav1_decoder_select="mdct sinewin"
2180 wmav1_encoder_select="mdct sinewin"
2181 wmav2_decoder_select="mdct sinewin"
2182 wmav2_encoder_select="mdct sinewin"
2183 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2184 wmv1_decoder_select="h263_decoder"
2185 wmv1_encoder_select="h263_encoder"
2186 wmv2_decoder_select="h263_decoder intrax8 videodsp"
2187 wmv2_encoder_select="h263_encoder"
2188 wmv3_decoder_select="vc1_decoder"
2189 wmv3image_decoder_select="wmv3_decoder"
2190 zerocodec_decoder_select="zlib"
2191 zlib_decoder_select="zlib"
2192 zlib_encoder_select="zlib"
2193 zmbv_decoder_select="zlib"
2194 zmbv_encoder_select="zlib"
2195
2196 # hardware accelerators
2197 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2198 dxva2_deps="dxva2api_h"
2199 vaapi_deps="va_va_h"
2200 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2201 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2202 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2203 xvmc_deps="X11_extensions_XvMClib_h"
2204
2205 h263_vaapi_hwaccel_deps="vaapi"
2206 h263_vaapi_hwaccel_select="h263_decoder"
2207 h263_vdpau_hwaccel_deps="vdpau"
2208 h263_vdpau_hwaccel_select="h263_decoder"
2209 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2210 h264_dxva2_hwaccel_deps="dxva2"
2211 h264_dxva2_hwaccel_select="h264_decoder"
2212 h264_vaapi_hwaccel_deps="vaapi"
2213 h264_vaapi_hwaccel_select="h264_decoder"
2214 h264_vda_decoder_deps="vda"
2215 h264_vda_decoder_select="h264_decoder"
2216 h264_vda_hwaccel_deps="vda"
2217 h264_vda_hwaccel_select="h264_decoder"
2218 h264_vda_old_hwaccel_deps="vda"
2219 h264_vda_old_hwaccel_select="h264_decoder"
2220 h264_vdpau_decoder_deps="vdpau"
2221 h264_vdpau_decoder_select="h264_decoder"
2222 h264_vdpau_hwaccel_deps="vdpau"
2223 h264_vdpau_hwaccel_select="h264_decoder"
2224 mpeg_vdpau_decoder_deps="vdpau"
2225 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2226 mpeg_xvmc_hwaccel_deps="xvmc"
2227 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2228 mpeg1_vdpau_decoder_deps="vdpau"
2229 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2230 mpeg1_vdpau_hwaccel_deps="vdpau"
2231 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2232 mpeg1_xvmc_hwaccel_deps="xvmc"
2233 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2234 mpeg2_crystalhd_decoder_select="crystalhd"
2235 mpeg2_dxva2_hwaccel_deps="dxva2"
2236 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2237 mpeg2_vaapi_hwaccel_deps="vaapi"
2238 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2239 mpeg2_vdpau_hwaccel_deps="vdpau"
2240 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2241 mpeg2_xvmc_hwaccel_deps="xvmc"
2242 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2243 mpeg4_crystalhd_decoder_select="crystalhd"
2244 mpeg4_vaapi_hwaccel_deps="vaapi"
2245 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2246 mpeg4_vdpau_decoder_deps="vdpau"
2247 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2248 mpeg4_vdpau_hwaccel_deps="vdpau"
2249 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2250 msmpeg4_crystalhd_decoder_select="crystalhd"
2251 vc1_crystalhd_decoder_select="crystalhd"
2252 vc1_dxva2_hwaccel_deps="dxva2"
2253 vc1_dxva2_hwaccel_select="vc1_decoder"
2254 vc1_vaapi_hwaccel_deps="vaapi"
2255 vc1_vaapi_hwaccel_select="vc1_decoder"
2256 vc1_vdpau_decoder_deps="vdpau"
2257 vc1_vdpau_decoder_select="vc1_decoder"
2258 vc1_vdpau_hwaccel_deps="vdpau"
2259 vc1_vdpau_hwaccel_select="vc1_decoder"
2260 wmv3_crystalhd_decoder_select="crystalhd"
2261 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2262 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2263 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2264 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2265
2266 # parsers
2267 h264_parser_select="h264_decoder"
2268 hevc_parser_select="hevc_decoder"
2269 mpegvideo_parser_select="error_resilience mpegvideo"
2270 mpeg4video_parser_select="error_resilience h263dsp mpegvideo qpeldsp"
2271 vc1_parser_select="mpegvideo"
2272
2273 # external libraries
2274 libaacplus_encoder_deps="libaacplus"
2275 libcelt_decoder_deps="libcelt"
2276 libfaac_encoder_deps="libfaac"
2277 libfaac_encoder_select="audio_frame_queue"
2278 libfdk_aac_decoder_deps="libfdk_aac"
2279 libfdk_aac_encoder_deps="libfdk_aac"
2280 libfdk_aac_encoder_select="audio_frame_queue"
2281 libgme_demuxer_deps="libgme"
2282 libgsm_decoder_deps="libgsm"
2283 libgsm_encoder_deps="libgsm"
2284 libgsm_ms_decoder_deps="libgsm"
2285 libgsm_ms_encoder_deps="libgsm"
2286 libilbc_decoder_deps="libilbc"
2287 libilbc_encoder_deps="libilbc"
2288 libmodplug_demuxer_deps="libmodplug"
2289 libmp3lame_encoder_deps="libmp3lame"
2290 libmp3lame_encoder_select="audio_frame_queue"
2291 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2292 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2293 libopencore_amrnb_encoder_select="audio_frame_queue"
2294 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2295 libopenjpeg_decoder_deps="libopenjpeg"
2296 libopenjpeg_encoder_deps="libopenjpeg"
2297 libopus_decoder_deps="libopus"
2298 libopus_encoder_deps="libopus"
2299 libopus_encoder_select="audio_frame_queue"
2300 libquvi_demuxer_deps="libquvi"
2301 libschroedinger_decoder_deps="libschroedinger"
2302 libschroedinger_encoder_deps="libschroedinger"
2303 libshine_encoder_deps="libshine"
2304 libshine_encoder_select="audio_frame_queue"
2305 libspeex_decoder_deps="libspeex"
2306 libspeex_encoder_deps="libspeex"
2307 libspeex_encoder_select="audio_frame_queue"
2308 libstagefright_h264_decoder_deps="libstagefright_h264"
2309 libtheora_encoder_deps="libtheora"
2310 libtwolame_encoder_deps="libtwolame"
2311 libvo_aacenc_encoder_deps="libvo_aacenc"
2312 libvo_aacenc_encoder_select="audio_frame_queue"
2313 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2314 libvorbis_decoder_deps="libvorbis"
2315 libvorbis_encoder_deps="libvorbis"
2316 libvorbis_encoder_select="audio_frame_queue"
2317 libvpx_vp8_decoder_deps="libvpx"
2318 libvpx_vp8_encoder_deps="libvpx"
2319 libvpx_vp9_decoder_deps="libvpx"
2320 libvpx_vp9_encoder_deps="libvpx"
2321 libwavpack_encoder_deps="libwavpack"
2322 libwebp_encoder_deps="libwebp"
2323 libx264_encoder_deps="libx264"
2324 libx264rgb_encoder_deps="libx264"
2325 libx265_encoder_deps="libx265"
2326 libxavs_encoder_deps="libxavs"
2327 libxvid_encoder_deps="libxvid"
2328 libutvideo_decoder_deps="libutvideo"
2329 libutvideo_encoder_deps="libutvideo"
2330 libzvbi_teletext_decoder_deps="libzvbi"
2331
2332 # demuxers / muxers
2333 ac3_demuxer_select="ac3_parser"
2334 asf_demuxer_select="riffdec"
2335 asf_muxer_select="riffenc"
2336 asf_stream_muxer_select="asf_muxer"
2337 avi_demuxer_select="riffdec exif"
2338 avi_muxer_select="riffenc"
2339 avisynth_demuxer_deps="avisynth"
2340 avisynth_demuxer_select="riffdec"
2341 caf_demuxer_select="riffdec"
2342 dirac_demuxer_select="dirac_parser"
2343 dts_demuxer_select="dca_parser"
2344 dtshd_demuxer_select="dca_parser"
2345 dxa_demuxer_select="riffdec"
2346 eac3_demuxer_select="ac3_parser"
2347 f4v_muxer_select="mov_muxer"
2348 flac_demuxer_select="flac_parser"
2349 hds_muxer_select="flv_muxer"
2350 hls_muxer_select="mpegts_muxer"
2351 image2_alias_pix_demuxer_select="image2_demuxer"
2352 image2_brender_pix_demuxer_select="image2_demuxer"
2353 ipod_muxer_select="mov_muxer"
2354 ismv_muxer_select="mov_muxer"
2355 libnut_demuxer_deps="libnut"
2356 libnut_muxer_deps="libnut"
2357 matroska_audio_muxer_select="matroska_muxer"
2358 matroska_demuxer_select="riffdec"
2359 matroska_demuxer_suggest="bzlib lzo zlib"
2360 matroska_muxer_select="riffenc"
2361 mmf_muxer_select="riffenc"
2362 mov_demuxer_select="riffdec"
2363 mov_demuxer_suggest="zlib"
2364 mov_muxer_select="riffenc rtpenc_chain"
2365 mp3_demuxer_select="mpegaudio_parser"
2366 mp4_muxer_select="mov_muxer"
2367 mpegts_muxer_select="adts_muxer latm_muxer"
2368 mpegtsraw_demuxer_select="mpegts_demuxer"
2369 mxf_d10_muxer_select="mxf_muxer"
2370 nut_muxer_select="riffenc"
2371 nuv_demuxer_select="riffdec"
2372 ogg_demuxer_select="golomb"
2373 psp_muxer_select="mov_muxer"
2374 rtp_demuxer_select="sdp_demuxer"
2375 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2376 rtsp_demuxer_select="http_protocol rtpdec"
2377 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2378 sap_demuxer_select="sdp_demuxer"
2379 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2380 sdp_demuxer_select="rtpdec"
2381 smoothstreaming_muxer_select="ismv_muxer"
2382 spdif_muxer_select="aac_parser"
2383 tak_demuxer_select="tak_parser"
2384 tg2_muxer_select="mov_muxer"
2385 tgp_muxer_select="mov_muxer"
2386 vobsub_demuxer_select="mpegps_demuxer"
2387 w64_demuxer_select="wav_demuxer"
2388 w64_muxer_select="wav_muxer"
2389 wav_demuxer_select="riffdec"
2390 wav_muxer_select="riffenc"
2391 webm_muxer_select="riffenc"
2392 wtv_demuxer_select="riffdec"
2393 wtv_muxer_select="riffenc"
2394 xmv_demuxer_select="riffdec"
2395 xwma_demuxer_select="riffdec"
2396
2397 # indevs / outdevs
2398 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2399 alsa_outdev_deps="alsa_asoundlib_h"
2400 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2401 avfoundation_indev_select="avfoundation"
2402 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2403 caca_outdev_deps="libcaca"
2404 decklink_outdev_deps="decklink pthreads"
2405 decklink_outdev_extralibs="-lstdc++"
2406 dshow_indev_deps="IBaseFilter"
2407 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2408 dv1394_indev_deps="dv1394"
2409 dv1394_indev_select="dv_demuxer"
2410 fbdev_indev_deps="linux_fb_h"
2411 fbdev_outdev_deps="linux_fb_h"
2412 gdigrab_indev_deps="CreateDIBSection"
2413 gdigrab_indev_extralibs="-lgdi32"
2414 gdigrab_indev_select="bmp_decoder"
2415 iec61883_indev_deps="libiec61883"
2416 jack_indev_deps="jack_jack_h sem_timedwait"
2417 lavfi_indev_deps="avfilter"
2418 libcdio_indev_deps="libcdio"
2419 libdc1394_indev_deps="libdc1394"
2420 libv4l2_indev_deps="libv4l2"
2421 openal_indev_deps="openal"
2422 opengl_outdev_deps="opengl"
2423 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2424 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2425 pulse_indev_deps="libpulse"
2426 pulse_outdev_deps="libpulse"
2427 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2428 qtkit_indev_select="qtkit"
2429 sdl_outdev_deps="sdl"
2430 sndio_indev_deps="sndio_h"
2431 sndio_outdev_deps="sndio_h"
2432 v4l_indev_deps="linux_videodev_h"
2433 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2434 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2435 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2436 vfwcap_indev_extralibs="-lavicap32"
2437 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2438 xv_outdev_extralibs="-lXv -lX11 -lXext"
2439 x11grab_indev_deps="x11grab"
2440
2441 # protocols
2442 bluray_protocol_deps="libbluray"
2443 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2444 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2445 ffrtmpcrypt_protocol_select="tcp_protocol"
2446 ffrtmphttp_protocol_deps="!librtmp_protocol"
2447 ffrtmphttp_protocol_select="http_protocol"
2448 ftp_protocol_select="tcp_protocol"
2449 gopher_protocol_select="network"
2450 http_protocol_select="tcp_protocol"
2451 httpproxy_protocol_select="tcp_protocol"
2452 https_protocol_select="tls_protocol"
2453 librtmp_protocol_deps="librtmp"
2454 librtmpe_protocol_deps="librtmp"
2455 librtmps_protocol_deps="librtmp"
2456 librtmpt_protocol_deps="librtmp"
2457 librtmpte_protocol_deps="librtmp"
2458 libssh_protocol_deps="libssh"
2459 mmsh_protocol_select="http_protocol"
2460 mmst_protocol_select="network"
2461 rtmp_protocol_deps="!librtmp_protocol"
2462 rtmp_protocol_select="tcp_protocol"
2463 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2464 rtmps_protocol_deps="!librtmp_protocol"
2465 rtmps_protocol_select="tls_protocol"
2466 rtmpt_protocol_select="ffrtmphttp_protocol"
2467 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2468 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2469 rtp_protocol_select="udp_protocol"
2470 sctp_protocol_deps="struct_sctp_event_subscribe"
2471 sctp_protocol_select="network"
2472 srtp_protocol_select="rtp_protocol"
2473 tcp_protocol_select="network"
2474 tls_protocol_deps_any="openssl gnutls"
2475 tls_protocol_select="tcp_protocol"
2476 udp_protocol_select="network"
2477 unix_protocol_deps="sys_un_h"
2478 unix_protocol_select="network"
2479
2480 # filters
2481 aconvert_filter_deps="swresample"
2482 amovie_filter_deps="avcodec avformat"
2483 aresample_filter_deps="swresample"
2484 ass_filter_deps="libass"
2485 asyncts_filter_deps="avresample"
2486 atempo_filter_deps="avcodec"
2487 atempo_filter_select="rdft"
2488 azmq_filter_deps="libzmq"
2489 blackframe_filter_deps="gpl"
2490 boxblur_filter_deps="gpl"
2491 bs2b_filter_deps="libbs2b"
2492 colormatrix_filter_deps="gpl"
2493 cropdetect_filter_deps="gpl"
2494 dctdnoiz_filter_deps="avcodec"
2495 dctdnoiz_filter_select="dct"
2496 delogo_filter_deps="gpl"
2497 deshake_filter_deps="avcodec"
2498 deshake_filter_select="dsputil"
2499 drawtext_filter_deps="libfreetype"
2500 ebur128_filter_deps="gpl"
2501 flite_filter_deps="libflite"
2502 frei0r_filter_deps="frei0r dlopen"
2503 frei0r_filter_extralibs='$ldl'
2504 frei0r_src_filter_deps="frei0r dlopen"
2505 frei0r_src_filter_extralibs='$ldl'
2506 geq_filter_deps="gpl"
2507 histeq_filter_deps="gpl"
2508 hqdn3d_filter_deps="gpl"
2509 interlace_filter_deps="gpl"
2510 kerndeint_filter_deps="gpl"
2511 ladspa_filter_deps="ladspa dlopen"
2512 ladspa_filter_extralibs='$ldl'
2513 mcdeint_filter_deps="avcodec gpl"
2514 movie_filter_deps="avcodec avformat"
2515 mp_filter_deps="gpl avcodec swscale inline_asm"
2516 mpdecimate_filter_deps="gpl avcodec"
2517 mptestsrc_filter_deps="gpl"
2518 negate_filter_deps="lut_filter"
2519 perspective_filter_deps="gpl"
2520 ocv_filter_deps="libopencv"
2521 owdenoise_filter_deps="gpl"
2522 pan_filter_deps="swresample"
2523 phase_filter_deps="gpl"
2524 pp_filter_deps="gpl postproc"
2525 pullup_filter_deps="gpl"
2526 removelogo_filter_deps="avcodec avformat swscale"
2527 resample_filter_deps="avresample"
2528 sab_filter_deps="gpl swscale"
2529 scale_filter_deps="swscale"
2530 smartblur_filter_deps="gpl swscale"
2531 showspectrum_filter_deps="avcodec"
2532 showspectrum_filter_select="rdft"
2533 spp_filter_deps="gpl avcodec"
2534 spp_filter_select="fft"
2535 stereo3d_filter_deps="gpl"
2536 subtitles_filter_deps="avformat avcodec libass"
2537 super2xsai_filter_deps="gpl"
2538 tinterlace_filter_deps="gpl"
2539 vidstabdetect_filter_deps="libvidstab"
2540 vidstabtransform_filter_deps="libvidstab"
2541 pixfmts_super2xsai_test_deps="super2xsai_filter"
2542 tinterlace_merge_test_deps="tinterlace_filter"
2543 tinterlace_pad_test_deps="tinterlace_filter"
2544 zmq_filter_deps="libzmq"
2545 zoompan_filter_deps="swscale"
2546
2547 # examples
2548 avio_reading="avformat avcodec avutil"
2549 avcodec_example_deps="avcodec avutil"
2550 demuxing_decoding_example_deps="avcodec avformat avutil"
2551 filter_audio_example_deps="avfilter avutil"
2552 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2553 filtering_video_example_deps="avfilter avcodec avformat avutil"
2554 metadata_example_deps="avformat avutil"
2555 muxing_example_deps="avcodec avformat avutil swscale"
2556 remuxing_example_deps="avcodec avformat avutil"
2557 resampling_audio_example_deps="avutil swresample"
2558 scaling_video_example_deps="avutil swscale"
2559 transcode_aac_example_deps="avcodec avformat swresample"
2560 transcoding_example_deps="avfilter avcodec avformat avutil"
2561
2562 # libraries, in linking order
2563 avcodec_deps="avutil"
2564 avdevice_deps="avformat avcodec avutil"
2565 avfilter_deps="avutil"
2566 avformat_deps="avcodec avutil"
2567 avresample_deps="avutil"
2568 postproc_deps="avutil gpl"
2569 swresample_deps="avutil"
2570 swscale_deps="avutil"
2571
2572 # programs
2573 ffmpeg_deps="avcodec avfilter avformat swresample"
2574 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2575                null_filter
2576                setpts_filter trim_filter"
2577 ffplay_deps="avcodec avformat swscale swresample sdl"
2578 ffplay_libs='$sdl_libs'
2579 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2580 ffprobe_deps="avcodec avformat"
2581 ffserver_deps="avformat fork sarestart"
2582 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2583
2584 # documentation
2585 podpages_deps="perl"
2586 manpages_deps="perl pod2man"
2587 htmlpages_deps="perl texi2html"
2588 txtpages_deps="perl makeinfo"
2589 doc_deps_any="manpages htmlpages podpages txtpages"
2590
2591 # default parameters
2592
2593 logfile="config.log"
2594
2595 # installation paths
2596 prefix_default="/usr/local"
2597 bindir_default='${prefix}/bin'
2598 datadir_default='${prefix}/share/ffmpeg'
2599 docdir_default='${prefix}/share/doc/ffmpeg'
2600 incdir_default='${prefix}/include'
2601 libdir_default='${prefix}/lib'
2602 mandir_default='${prefix}/share/man'
2603 shlibdir_default="$libdir_default"
2604
2605 # toolchain
2606 ar_default="ar"
2607 cc_default="gcc"
2608 cxx_default="g++"
2609 host_cc_default="gcc"
2610 cp_f="cp -f"
2611 install="install"
2612 ln_s="ln -s -f"
2613 nm_default="nm -g"
2614 objformat="elf"
2615 pkg_config_default=pkg-config
2616 ranlib_default="ranlib"
2617 strip_default="strip"
2618 yasmexe_default="yasm"
2619 windres_default="windres"
2620
2621 nogas=":"
2622
2623 # OS
2624 target_os_default=$(tolower $(uname -s))
2625 host_os=$target_os_default
2626
2627 # machine
2628 if test "$target_os_default" = aix; then
2629     arch_default=$(uname -p)
2630 else
2631     arch_default=$(uname -m)
2632 fi
2633 cpu="generic"
2634
2635 # configurable options
2636 enable $PROGRAM_LIST
2637 enable $DOCUMENT_LIST
2638 enable $EXAMPLE_LIST
2639 enable $(filter_out avresample $LIBRARY_LIST)
2640 enable stripping
2641
2642 enable asm
2643 enable debug
2644 enable doc
2645 enable optimizations
2646 enable runtime_cpudetect
2647 enable safe_bitstream_reader
2648 enable static
2649 enable swscale_alpha
2650
2651 sws_max_filter_size_default=256
2652 set_default sws_max_filter_size
2653
2654 # Enable hwaccels by default.
2655 enable dxva2 vaapi vda vdpau xvmc
2656 enable xlib
2657
2658 # build settings
2659 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2660 LIBPREF="lib"
2661 LIBSUF=".a"
2662 FULLNAME='$(NAME)$(BUILDSUF)'
2663 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2664 SLIBPREF="lib"
2665 SLIBSUF=".so"
2666 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2667 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2668 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2669 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2670 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2671 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2672
2673 asflags_filter=echo
2674 cflags_filter=echo
2675 ldflags_filter=echo
2676
2677 AS_C='-c'
2678 AS_O='-o $@'
2679 CC_C='-c'
2680 CC_E='-E -o $@'
2681 CC_O='-o $@'
2682 CXX_C='-c'
2683 CXX_O='-o $@'
2684 LD_O='-o $@'
2685 LD_LIB='-l%'
2686 LD_PATH='-L'
2687 HOSTCC_C='-c'
2688 HOSTCC_E='-E -o $@'
2689 HOSTCC_O='-o $@'
2690 HOSTLD_O='-o $@'
2691
2692 host_libs='-lm'
2693 host_cflags_filter=echo
2694 host_ldflags_filter=echo
2695
2696 target_path='$(CURDIR)'
2697
2698 # since the object filename is not given with the -MM flag, the compiler
2699 # is only able to print the basename, and we must add the path ourselves
2700 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2701 DEPFLAGS='-MM'
2702
2703 # find source path
2704 if test -f configure; then
2705     source_path=.
2706 else
2707     source_path=$(cd $(dirname "$0"); pwd)
2708     echo "$source_path" | grep -q '[[:blank:]]' &&
2709         die "Out of tree builds are impossible with whitespace in source path."
2710     test -e "$source_path/config.h" &&
2711         die "Out of tree builds are impossible with config.h in source dir."
2712 fi
2713
2714 for v in "$@"; do
2715     r=${v#*=}
2716     l=${v%"$r"}
2717     r=$(sh_quote "$r")
2718     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2719 done
2720
2721 find_things(){
2722     thing=$1
2723     pattern=$2
2724     file=$source_path/$3
2725     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2726 }
2727
2728 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2729 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2730 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2731 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2732 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2733 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2734 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2735 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2736 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2737 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2738 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2739
2740 ALL_COMPONENTS="
2741     $BSF_LIST
2742     $DECODER_LIST
2743     $DEMUXER_LIST
2744     $ENCODER_LIST
2745     $FILTER_LIST
2746     $HWACCEL_LIST
2747     $INDEV_LIST
2748     $MUXER_LIST
2749     $OUTDEV_LIST
2750     $PARSER_LIST
2751     $PROTOCOL_LIST
2752 "
2753
2754 for n in $COMPONENT_LIST; do
2755     v=$(toupper ${n%s})_LIST
2756     eval enable \$$v
2757     eval ${n}_if_any="\$$v"
2758 done
2759
2760 enable $ARCH_EXT_LIST
2761
2762 die_unknown(){
2763     echo "Unknown option \"$1\"."
2764     echo "See $0 --help for available options."
2765     exit 1
2766 }
2767
2768 print_3_columns() {
2769     cat | tr ' ' '\n' | sort | pr -r -3 -t
2770 }
2771
2772 show_list() {
2773     suffix=_$1
2774     shift
2775     echo $* | sed s/$suffix//g | print_3_columns
2776     exit 0
2777 }
2778
2779 rand_list(){
2780     IFS=', '
2781     set -- $*
2782     unset IFS
2783     for thing; do
2784         comp=${thing%:*}
2785         prob=${thing#$comp}
2786         prob=${prob#:}
2787         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2788         echo "prob ${prob:-0.5}"
2789         printf '%s\n' $comp
2790     done
2791 }
2792
2793 do_random(){
2794     action=$1
2795     shift
2796     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2797     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2798 }
2799
2800 for opt do
2801     optval="${opt#*=}"
2802     case "$opt" in
2803         --extra-ldflags=*)
2804             add_ldflags $optval
2805         ;;
2806         --extra-libs=*)
2807             add_extralibs $optval
2808         ;;
2809         --disable-devices)
2810             disable $INDEV_LIST $OUTDEV_LIST
2811         ;;
2812         --enable-debug=*)
2813             debuglevel="$optval"
2814         ;;
2815         --disable-programs)
2816             disable $PROGRAM_LIST
2817         ;;
2818         --disable-everything)
2819             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2820         ;;
2821         --disable-all)
2822             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2823             disable $LIBRARY_LIST $PROGRAM_LIST doc
2824         ;;
2825         --enable-random|--disable-random)
2826             action=${opt%%-random}
2827             do_random ${action#--} $COMPONENT_LIST
2828         ;;
2829         --enable-random=*|--disable-random=*)
2830             action=${opt%%-random=*}
2831             do_random ${action#--} $optval
2832         ;;
2833         --enable-*=*|--disable-*=*)
2834             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2835             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2836             eval list=\$$(toupper $thing)_LIST
2837             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2838             list=$(filter "$name" $list)
2839             [ "$list" = "" ] && warn "Option $opt did not match anything"
2840             $action $list
2841         ;;
2842         --enable-?*|--disable-?*)
2843             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2844             if is_in $option $COMPONENT_LIST; then
2845                 test $action = disable && action=unset
2846                 eval $action \$$(toupper ${option%s})_LIST
2847             elif is_in $option $CMDLINE_SELECT; then
2848                 $action $option
2849             else
2850                 die_unknown $opt
2851             fi
2852         ;;
2853         --list-*)
2854             NAME="${opt#--list-}"
2855             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2856             NAME=${NAME%s}
2857             eval show_list $NAME \$$(toupper $NAME)_LIST
2858         ;;
2859         --help|-h) show_help
2860         ;;
2861         --fatal-warnings) enable fatal_warnings
2862         ;;
2863         *)
2864             optname="${opt%%=*}"
2865             optname="${optname#--}"
2866             optname=$(echo "$optname" | sed 's/-/_/g')
2867             if is_in $optname $CMDLINE_SET; then
2868                 eval $optname='$optval'
2869             elif is_in $optname $CMDLINE_APPEND; then
2870                 append $optname "$optval"
2871             else
2872                 die_unknown $opt
2873             fi
2874         ;;
2875     esac
2876 done
2877
2878 disabled logging && logfile=/dev/null
2879
2880 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2881 set >> $logfile
2882
2883 test -n "$cross_prefix" && enable cross_compile
2884
2885 if enabled cross_compile; then
2886     test -n "$arch" && test -n "$target_os" ||
2887         die "Must specify target arch and OS when cross-compiling"
2888 fi
2889
2890 ar_default="${cross_prefix}${ar_default}"
2891 cc_default="${cross_prefix}${cc_default}"
2892 cxx_default="${cross_prefix}${cxx_default}"
2893 nm_default="${cross_prefix}${nm_default}"
2894 pkg_config_default="${cross_prefix}${pkg_config_default}"
2895 ranlib_default="${cross_prefix}${ranlib_default}"
2896 strip_default="${cross_prefix}${strip_default}"
2897 windres_default="${cross_prefix}${windres_default}"
2898
2899 sysinclude_default="${sysroot}/usr/include"
2900
2901 test -n "$valgrind" && toolchain="valgrind-memcheck"
2902
2903 case "$toolchain" in
2904     clang-asan)
2905         cc_default="clang"
2906         add_cflags  -fsanitize=address
2907         add_ldflags -fsanitize=address
2908     ;;
2909     clang-tsan)
2910         cc_default="clang"
2911         add_cflags  -fsanitize=thread -pie
2912         add_ldflags -fsanitize=thread -pie
2913     ;;
2914     clang-usan)
2915         cc_default="clang"
2916         add_cflags  -fsanitize=undefined
2917         add_ldflags -fsanitize=undefined
2918     ;;
2919     gcc-asan)
2920         cc_default="gcc"
2921         add_cflags  -fsanitize=address
2922         add_ldflags -fsanitize=address
2923     ;;
2924     gcc-tsan)
2925         cc_default="gcc"
2926         add_cflags  -fsanitize=thread -pie -fPIC
2927         add_ldflags -fsanitize=thread -pie -fPIC
2928     ;;
2929     gcc-usan)
2930         cc_default="gcc"
2931         add_cflags  -fsanitize=undefined
2932         add_ldflags -fsanitize=undefined
2933     ;;
2934     valgrind-massif)
2935         target_exec_default=${valgrind:-"valgrind"}
2936         target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
2937     ;;
2938     valgrind-memcheck)
2939         target_exec_default=${valgrind:-"valgrind"}
2940         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2941     ;;
2942     msvc)
2943         # Check whether the current MSVC version needs the C99 converter.
2944         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2945         # support enough of C99 to build ffmpeg. Default to the new
2946         # behaviour if the regexp was unable to match anything, since this
2947         # successfully parses the version number of existing supported
2948         # versions that require the converter (MSVC 2010 and 2012).
2949         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2950         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2951             cc_default="cl"
2952         else
2953             cc_default="c99wrap cl"
2954         fi
2955         ld_default="link"
2956         nm_default="dumpbin -symbols"
2957         ar_default="lib"
2958         target_os_default="win32"
2959         # Use a relative path for TMPDIR. This makes sure all the
2960         # ffconf temp files are written with a relative path, avoiding
2961         # issues with msys/win32 path conversion for MSVC parameters
2962         # such as -Fo<file> or -out:<file>.
2963         TMPDIR=.
2964     ;;
2965     icl)
2966         cc_default="icl"
2967         ld_default="xilink"
2968         nm_default="dumpbin -symbols"
2969         ar_default="xilib"
2970         target_os_default="win32"
2971         TMPDIR=.
2972     ;;
2973     gcov)
2974         add_cflags  -fprofile-arcs -ftest-coverage
2975         add_ldflags -fprofile-arcs -ftest-coverage
2976     ;;
2977     hardened)
2978         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2979         add_ldflags -Wl,-z,relro -Wl,-z,now
2980     ;;
2981     ?*)
2982         die "Unknown toolchain $toolchain"
2983     ;;
2984 esac
2985
2986 set_default arch cc cxx pkg_config ranlib strip sysinclude target_exec target_os yasmexe
2987 enabled cross_compile || host_cc_default=$cc
2988 set_default host_cc
2989
2990 if ! $pkg_config --version >/dev/null 2>&1; then
2991     warn "$pkg_config not found, library detection may fail."
2992     pkg_config=false
2993 fi
2994
2995 exesuf() {
2996     case $1 in
2997         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2998     esac
2999 }
3000
3001 EXESUF=$(exesuf $target_os)
3002 HOSTEXESUF=$(exesuf $host_os)
3003
3004 # set temporary file name
3005 : ${TMPDIR:=$TEMPDIR}
3006 : ${TMPDIR:=$TMP}
3007 : ${TMPDIR:=/tmp}
3008
3009 if [ -n "$tempprefix" ] ; then
3010     mktemp(){
3011         echo $tempprefix.${HOSTNAME}.${UID}
3012     }
3013 elif ! check_cmd mktemp -u XXXXXX; then
3014     # simple replacement for missing mktemp
3015     # NOT SAFE FOR GENERAL USE
3016     mktemp(){
3017         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3018     }
3019 fi
3020
3021 tmpfile(){
3022     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3023         (set -C; exec > $tmp) 2>/dev/null ||
3024         die "Unable to create temporary file in $TMPDIR."
3025     append TMPFILES $tmp
3026     eval $1=$tmp
3027 }
3028
3029 trap 'rm -f -- $TMPFILES' EXIT
3030
3031 tmpfile TMPASM .asm
3032 tmpfile TMPC   .c
3033 tmpfile TMPCPP .cpp
3034 tmpfile TMPE   $EXESUF
3035 tmpfile TMPH   .h
3036 tmpfile TMPM   .m
3037 tmpfile TMPO   .o
3038 tmpfile TMPS   .S
3039 tmpfile TMPSH  .sh
3040 tmpfile TMPV   .ver
3041
3042 unset -f mktemp
3043
3044 chmod +x $TMPE
3045
3046 # make sure we can execute files in $TMPDIR
3047 cat > $TMPSH 2>> $logfile <<EOF
3048 #! /bin/sh
3049 EOF
3050 chmod +x $TMPSH >> $logfile 2>&1
3051 if ! $TMPSH >> $logfile 2>&1; then
3052     cat <<EOF
3053 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3054 variable to another directory and make sure that it is not mounted noexec.
3055 EOF
3056     die "Sanity test failed."
3057 fi
3058
3059 ccc_flags(){
3060     for flag; do
3061         case $flag in
3062             -std=c99)           echo -c99                       ;;
3063             -mcpu=*)            echo -arch ${flag#*=}           ;;
3064             -mieee)             echo -ieee                      ;;
3065             -O*|-fast)          echo $flag                      ;;
3066             -fno-math-errno)    echo -assume nomath_errno       ;;
3067             -g)                 echo -g3                        ;;
3068             -Wall)              echo -msg_enable level2         ;;
3069             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3070             -Wl,*)              echo $flag                      ;;
3071             -f*|-W*)                                            ;;
3072             *)                  echo $flag                      ;;
3073         esac
3074    done
3075 }
3076
3077 cparser_flags(){
3078     for flag; do
3079         case $flag in
3080             -Wno-switch)             echo -Wno-switch-enum ;;
3081             -Wno-format-zero-length) ;;
3082             -Wdisabled-optimization) ;;
3083             -Wno-pointer-sign)       echo -Wno-other ;;
3084             *)                       echo $flag ;;
3085         esac
3086     done
3087 }
3088
3089 msvc_common_flags(){
3090     for flag; do
3091         case $flag in
3092             # In addition to specifying certain flags under the compiler
3093             # specific filters, they must be specified here as well or else the
3094             # generic catch all at the bottom will print the original flag.
3095             -Wall)                ;;
3096             -std=c99)             ;;
3097             # Common flags
3098             -fomit-frame-pointer) ;;
3099             -g)                   echo -Z7 ;;
3100             -fno-math-errno)      ;;
3101             -fno-common)          ;;
3102             -fno-signed-zeros)    ;;
3103             -fPIC)                ;;
3104             -mthumb)              ;;
3105             -march=*)             ;;
3106             -lz)                  echo zlib.lib ;;
3107             -lavifil32)           echo vfw32.lib ;;
3108             -lavicap32)           echo vfw32.lib user32.lib ;;
3109             -l*)                  echo ${flag#-l}.lib ;;
3110             *)                    echo $flag ;;
3111         esac
3112     done
3113 }
3114
3115 msvc_flags(){
3116     msvc_common_flags "$@"
3117     for flag; do
3118         case $flag in
3119             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3120                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3121                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3122                                        -wd4554 \
3123                                        -wd4273 ;;
3124         esac
3125     done
3126 }
3127
3128 icl_flags(){
3129     msvc_common_flags "$@"
3130     for flag; do
3131         case $flag in
3132             # Despite what Intel's documentation says -Wall, which is supported
3133             # on Windows, does enable remarks so disable them here.
3134             -Wall)                echo $flag -Qdiag-disable:remark ;;
3135             -std=c99)             echo -Qstd=c99 ;;
3136         esac
3137     done
3138 }
3139
3140 icc_flags(){
3141     for flag; do
3142         case $flag in
3143             -flto)                echo -ipo ;;
3144             *)                    echo $flag ;;
3145         esac
3146     done
3147 }
3148
3149 pgi_flags(){
3150     for flag; do
3151         case $flag in
3152             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3153             -fomit-frame-pointer) echo -Mnoframe ;;
3154             -g)                   echo -gopt ;;
3155             *)                    echo $flag ;;
3156         esac
3157     done
3158 }
3159
3160 suncc_flags(){
3161     for flag; do
3162         case $flag in
3163             -march=*|-mcpu=*)
3164                 case "${flag#*=}" in
3165                     native)                   echo -xtarget=native       ;;
3166                     v9|niagara)               echo -xarch=sparc          ;;
3167                     ultrasparc)               echo -xarch=sparcvis       ;;
3168                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3169                     i586|pentium)             echo -xchip=pentium        ;;
3170                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3171                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3172                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3173                     pentium4*)          echo -xtarget=pentium4           ;;
3174                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3175                     *-sse3)             echo -xarch=sse3                 ;;
3176                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3177                     bonnell)                   echo -xarch=ssse3         ;;
3178                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3179                     westmere)                  echo -xtarget=westmere    ;;
3180                     silvermont)                echo -xarch=sse4_2        ;;
3181                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3182                     core-avx*|ivybridge|haswell|broadwell)
3183                                                echo -xarch=avx           ;;
3184                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3185                     btver1)                    echo -xarch=amdsse4a      ;;
3186                     btver2|bdver*)             echo -xarch=avx           ;;
3187                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3188                     k8|opteron|athlon64|athlon-fx)
3189                                                echo -xarch=sse2a         ;;
3190                     athlon*)                   echo -xarch=pentium_proa  ;;
3191                 esac
3192                 ;;
3193             -std=c99)             echo -xc99              ;;
3194             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3195             -fPIC)                echo -KPIC -xcode=pic32 ;;
3196             -W*,*)                echo $flag              ;;
3197             -f*-*|-W*|-mimpure-text)                      ;;
3198             -shared)              echo -G                 ;;
3199             *)                    echo $flag              ;;
3200         esac
3201     done
3202 }
3203
3204 tms470_flags(){
3205     for flag; do
3206         case $flag in
3207             -march=*|-mcpu=*)
3208                 case "${flag#*=}" in
3209                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3210                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3211                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3212                     armv6*|arm11*)          echo -mv=6   ;;
3213                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3214                                             echo -mv=5e  ;;
3215                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3216                 esac
3217                 ;;
3218             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3219             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3220             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3221             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3222             -msoft-float)   echo --float_support=vfplib       ;;
3223             -O[0-3]|-mf=*)  echo $flag                        ;;
3224             -g)             echo -g -mn                       ;;
3225             -pds=*)         echo $flag                        ;;
3226             -D*|-I*)        echo $flag                        ;;
3227             --gcc|--abi=*)  echo $flag                        ;;
3228             -me)            echo $flag                        ;;
3229         esac
3230     done
3231 }
3232
3233 probe_cc(){
3234     pfx=$1
3235     _cc=$2
3236
3237     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3238     unset _ld_o _ldflags _ld_lib _ld_path
3239     unset _depflags _DEPCMD _DEPFLAGS
3240     _flags_filter=echo
3241
3242     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3243         true # no-op to avoid reading stdin in following checks
3244     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3245         _type=llvm_gcc
3246         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3247         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3248         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3249         _cflags_speed='-O3'
3250         _cflags_size='-Os'
3251     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3252         _type=gcc
3253         gcc_version=$($_cc --version | head -n1)
3254         gcc_basever=$($_cc -dumpversion)
3255         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3256         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3257         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3258         if ! $_cc -dumpversion | grep -q '^2\.'; then
3259             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3260         fi
3261         _cflags_speed='-O3'
3262         _cflags_size='-Os'
3263     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3264         _type=icc
3265         _ident=$($_cc --version | head -n1)
3266         _depflags='-MMD'
3267         _cflags_speed='-O3'
3268         _cflags_size='-Os'
3269         _cflags_noopt='-O1'
3270         _flags_filter=icc_flags
3271     elif $_cc -v 2>&1 | grep -q xlc; then
3272         _type=xlc
3273         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3274         _cflags_speed='-O5'
3275         _cflags_size='-O5 -qcompact'
3276     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3277         _type=ccc
3278         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3279         _DEPFLAGS='-M'
3280         _cflags_speed='-fast'
3281         _cflags_size='-O1'
3282         _flags_filter=ccc_flags
3283     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3284         test -d "$sysroot" || die "No valid sysroot specified."
3285         _type=armcc
3286         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
3287         armcc_conf="$PWD/armcc.conf"
3288         $_cc --arm_linux_configure                 \
3289              --arm_linux_config_file="$armcc_conf" \
3290              --configure_sysroot="$sysroot"        \
3291              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3292              die "Error creating armcc configuration file."
3293         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3294         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3295         as_default="${cross_prefix}gcc"
3296         _depflags='-MMD'
3297         _cflags_speed='-O3'
3298         _cflags_size='-Os'
3299     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3300         _type=tms470
3301         _ident=$($_cc -version | head -n1 | tr -s ' ')
3302         _flags='--gcc --abi=eabi -me'
3303         _cc_e='-ppl -fe=$@'
3304         _cc_o='-fe=$@'
3305         _depflags='-ppa -ppd=$(@:.o=.d)'
3306         _cflags_speed='-O3 -mf=5'
3307         _cflags_size='-O3 -mf=2'
3308         _flags_filter=tms470_flags
3309     elif $_cc -v 2>&1 | grep -q clang; then
3310         _type=clang
3311         _ident=$($_cc --version | head -n1)
3312         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3313         _cflags_speed='-O3'
3314         _cflags_size='-Os'
3315     elif $_cc -V 2>&1 | grep -q Sun; then
3316         _type=suncc
3317         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3318         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3319         _DEPFLAGS='-xM1 -xc99'
3320         _ldflags='-std=c99'
3321         _cflags_speed='-O5'
3322         _cflags_size='-O5 -xspace'
3323         _flags_filter=suncc_flags
3324     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3325         _type=pathscale
3326         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3327         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3328         _cflags_speed='-O2'
3329         _cflags_size='-Os'
3330         _flags_filter='filter_out -Wdisabled-optimization'
3331     elif $_cc -v 2>&1 | grep -q Open64; then
3332         _type=open64
3333         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3334         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3335         _cflags_speed='-O2'
3336         _cflags_size='-Os'
3337         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3338     elif $_cc -V 2>&1 | grep -q Portland; then
3339         _type=pgi
3340         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3341         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3342         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3343         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3344         _cflags_noopt="-O"
3345         _flags_filter=pgi_flags
3346     elif $_cc 2>&1 | grep -q Microsoft; then
3347         _type=msvc
3348         _ident=$($cc 2>&1 | head -n1)
3349         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3350         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3351         _cflags_speed="-O2"
3352         _cflags_size="-O1"
3353         if $_cc 2>&1 | grep -q Linker; then
3354             _ld_o='-out:$@'
3355         else
3356             _ld_o='-Fe$@'
3357         fi
3358         _cc_o='-Fo$@'
3359         _cc_e='-P -Fi$@'
3360         _flags_filter=msvc_flags
3361         _ld_lib='lib%.a'
3362         _ld_path='-libpath:'
3363         _flags='-nologo'
3364         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3365         if [ $pfx = hostcc ]; then
3366             append _cflags -Dsnprintf=_snprintf
3367         fi
3368         disable stripping
3369     elif $_cc 2>&1 | grep -q Intel; then
3370         _type=icl
3371         _ident=$($cc 2>&1 | head -n1)
3372         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3373         # Not only is O3 broken on 13.x+ but it is slower on all previous
3374         # versions (tested) as well.
3375         _cflags_speed="-O2"
3376         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3377         if $_cc 2>&1 | grep -q Linker; then
3378             _ld_o='-out:$@'
3379         else
3380             _ld_o='-Fe$@'
3381         fi
3382         _cc_o='-Fo$@'
3383         _cc_e='-P'
3384         _flags_filter=icl_flags
3385         _ld_lib='lib%.a'
3386         _ld_path='-libpath:'
3387         # -Qdiag-error to make icl error when seeing certain unknown arguments
3388         _flags='-nologo -Qdiag-error:4044,10157'
3389         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3390         # with MSVC which enables it by default.
3391         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3392         if [ $pfx = hostcc ]; then
3393             append _cflags -Dsnprintf=_snprintf
3394         fi
3395     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3396         _type=cparser
3397         _ident=$($_cc --version | head -n1)
3398         _depflags='-MMD'
3399         _cflags_speed='-O4'
3400         _cflags_size='-O2'
3401         _flags_filter=cparser_flags
3402     fi
3403
3404     eval ${pfx}_type=\$_type
3405     eval ${pfx}_ident=\$_ident
3406 }
3407
3408 set_ccvars(){
3409     eval ${1}_C=\${_cc_c-\${${1}_C}}
3410     eval ${1}_E=\${_cc_e-\${${1}_E}}
3411     eval ${1}_O=\${_cc_o-\${${1}_O}}
3412
3413     if [ -n "$_depflags" ]; then
3414         eval ${1}_DEPFLAGS=\$_depflags
3415     else
3416         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3417         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3418         eval DEP${1}FLAGS=\$_flags
3419     fi
3420 }
3421
3422 probe_cc cc "$cc"
3423 cflags_filter=$_flags_filter
3424 cflags_speed=$_cflags_speed
3425 cflags_size=$_cflags_size
3426 cflags_noopt=$_cflags_noopt
3427 add_cflags $_flags $_cflags
3428 cc_ldflags=$_ldflags
3429 set_ccvars CC
3430
3431 probe_cc hostcc "$host_cc"
3432 host_cflags_filter=$_flags_filter
3433 add_host_cflags  $_flags $_cflags
3434 set_ccvars HOSTCC
3435
3436 test -n "$cc_type" && enable $cc_type ||
3437     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3438
3439 : ${as_default:=$cc}
3440 : ${dep_cc_default:=$cc}
3441 : ${ld_default:=$cc}
3442 : ${host_ld_default:=$host_cc}
3443 set_default ar as dep_cc ld host_ld windres
3444
3445 probe_cc as "$as"
3446 asflags_filter=$_flags_filter
3447 add_asflags $_flags $_cflags
3448 set_ccvars AS
3449
3450 probe_cc ld "$ld"
3451 ldflags_filter=$_flags_filter
3452 add_ldflags $_flags $_ldflags
3453 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3454 LD_O=${_ld_o-$LD_O}
3455 LD_LIB=${_ld_lib-$LD_LIB}
3456 LD_PATH=${_ld_path-$LD_PATH}
3457
3458 probe_cc hostld "$host_ld"
3459 host_ldflags_filter=$_flags_filter
3460 add_host_ldflags $_flags $_ldflags
3461 HOSTLD_O=${_ld_o-$HOSTLD_O}
3462
3463 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3464     probe_cc depcc "$dep_cc"
3465     CCDEP=${_DEPCMD:-$DEPCMD}
3466     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3467     DEPCCFLAGS=$_flags
3468 fi
3469
3470 if $ar 2>&1 | grep -q Microsoft; then
3471     arflags="-nologo"
3472     ar_o='-out:$@'
3473 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3474     arflags="rq"
3475     ar_o='$@'
3476 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3477     arflags='-Xany -r -c'
3478     ar_o='$@'
3479 else
3480     arflags="rc"
3481     ar_o='$@'
3482 fi
3483
3484 add_cflags $extra_cflags
3485 add_cxxflags $extra_cxxflags
3486 add_asflags $extra_cflags
3487
3488 if test -n "$sysroot"; then
3489     case "$cc_type" in
3490         gcc|llvm_gcc|clang)
3491             add_cppflags --sysroot="$sysroot"
3492             add_ldflags --sysroot="$sysroot"
3493 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3494             add_cppflags -isysroot "$sysroot"
3495             add_ldflags -isysroot "$sysroot"
3496         ;;
3497         tms470)
3498             add_cppflags -I"$sysinclude"
3499             add_ldflags  --sysroot="$sysroot"
3500         ;;
3501     esac
3502 fi
3503
3504 if test "$cpu" = host; then
3505     enabled cross_compile &&
3506         die "--cpu=host makes no sense when cross-compiling."
3507
3508     case "$cc_type" in
3509         gcc|llvm_gcc)
3510             check_native(){
3511                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3512                 sed -n "/cc1.*$1=/{
3513                             s/.*$1=\\([^ ]*\\).*/\\1/
3514                             p
3515                             q
3516                         }" $TMPE
3517             }
3518             cpu=$(check_native -march || check_native -mcpu)
3519         ;;
3520     esac
3521
3522     test "${cpu:-host}" = host &&
3523         die "--cpu=host not supported with compiler $cc"
3524 fi
3525
3526 # Deal with common $arch aliases
3527 case "$arch" in
3528     aarch64|arm64)
3529         arch="aarch64"
3530     ;;
3531     arm*|iPad*|iPhone*)
3532         arch="arm"
3533     ;;
3534     mips*|IP*)
3535         arch="mips"
3536     ;;
3537     parisc*|hppa*)
3538         arch="parisc"
3539     ;;
3540     "Power Macintosh"|ppc*|powerpc*)
3541         arch="ppc"
3542     ;;
3543     s390|s390x)
3544         arch="s390"
3545     ;;
3546     sh4|sh)
3547         arch="sh4"
3548     ;;
3549     sun4u|sparc*)
3550         arch="sparc"
3551     ;;
3552     tilegx|tile-gx)
3553         arch="tilegx"
3554     ;;
3555     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3556         arch="x86"
3557     ;;
3558 esac
3559
3560 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3561 enable $arch
3562
3563 # Add processor-specific flags
3564 if enabled aarch64; then
3565
3566     case $cpu in
3567         armv*)
3568             cpuflags="-march=$cpu"
3569         ;;
3570         *)
3571             cpuflags="-mcpu=$cpu"
3572         ;;
3573     esac
3574
3575 elif enabled alpha; then
3576
3577     cpuflags="-mcpu=$cpu"
3578
3579 elif enabled arm; then
3580
3581     check_arm_arch() {
3582         check_cpp_condition stddef.h \
3583             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3584             $cpuflags
3585     }
3586
3587     probe_arm_arch() {
3588         if   check_arm_arch 4;        then echo armv4;
3589         elif check_arm_arch 4T;       then echo armv4t;
3590         elif check_arm_arch 5;        then echo armv5;
3591         elif check_arm_arch 5E;       then echo armv5e;
3592         elif check_arm_arch 5T;       then echo armv5t;
3593         elif check_arm_arch 5TE;      then echo armv5te;
3594         elif check_arm_arch 5TEJ;     then echo armv5te;
3595         elif check_arm_arch 6;        then echo armv6;
3596         elif check_arm_arch 6J;       then echo armv6j;
3597         elif check_arm_arch 6K;       then echo armv6k;
3598         elif check_arm_arch 6Z;       then echo armv6z;
3599         elif check_arm_arch 6ZK;      then echo armv6zk;
3600         elif check_arm_arch 6T2;      then echo armv6t2;
3601         elif check_arm_arch 7;        then echo armv7;
3602         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3603         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3604         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3605         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3606         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3607         fi
3608     }
3609
3610     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3611
3612     case $cpu in
3613         armv*)
3614             cpuflags="-march=$cpu"
3615             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3616         ;;
3617         *)
3618             cpuflags="-mcpu=$cpu"
3619             case $cpu in
3620                 cortex-a*)                               subarch=armv7a  ;;
3621                 cortex-r*)                               subarch=armv7r  ;;
3622                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3623                 arm11*)                                  subarch=armv6   ;;
3624                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3625                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3626                 *)                             subarch=$(probe_arm_arch) ;;
3627             esac
3628         ;;
3629     esac
3630
3631     case "$subarch" in
3632         armv5t*)    enable fast_clz                ;;
3633         armv[6-8]*)
3634             enable fast_clz
3635             disabled fast_unaligned || enable fast_unaligned
3636             ;;
3637     esac
3638
3639 elif enabled avr32; then
3640
3641     case $cpu in
3642         ap7[02]0[0-2])
3643             subarch="avr32_ap"
3644             cpuflags="-mpart=$cpu"
3645         ;;
3646         ap)
3647             subarch="avr32_ap"
3648             cpuflags="-march=$cpu"
3649         ;;
3650         uc3[ab]*)
3651             subarch="avr32_uc"
3652             cpuflags="-mcpu=$cpu"
3653         ;;
3654         uc)
3655             subarch="avr32_uc"
3656             cpuflags="-march=$cpu"
3657         ;;
3658     esac
3659
3660 elif enabled bfin; then
3661
3662     cpuflags="-mcpu=$cpu"
3663
3664 elif enabled mips; then
3665
3666     cpuflags="-march=$cpu"
3667
3668     case $cpu in
3669         24kc)
3670             disable mipsfpu
3671             disable mipsdspr1
3672             disable mipsdspr2
3673         ;;
3674         24kf*)
3675             disable mipsdspr1
3676             disable mipsdspr2
3677         ;;
3678         24kec|34kc|1004kc)
3679             disable mipsfpu
3680             disable mipsdspr2
3681         ;;
3682         24kef*|34kf*|1004kf*)
3683             disable mipsdspr2
3684         ;;
3685         74kc)
3686             disable mipsfpu
3687         ;;
3688     esac
3689
3690 elif enabled ppc; then
3691
3692     disable ldbrx
3693
3694     case $(tolower $cpu) in
3695         601|ppc601|powerpc601)
3696             cpuflags="-mcpu=601"
3697             disable altivec
3698         ;;
3699         603*|ppc603*|powerpc603*)
3700             cpuflags="-mcpu=603"
3701             disable altivec
3702         ;;
3703         604*|ppc604*|powerpc604*)
3704             cpuflags="-mcpu=604"
3705             disable altivec
3706         ;;
3707         g3|75*|ppc75*|powerpc75*)
3708             cpuflags="-mcpu=750"
3709             disable altivec
3710         ;;
3711         g4|745*|ppc745*|powerpc745*)
3712             cpuflags="-mcpu=7450"
3713         ;;
3714         74*|ppc74*|powerpc74*)
3715             cpuflags="-mcpu=7400"
3716         ;;
3717         g5|970|ppc970|powerpc970)
3718             cpuflags="-mcpu=970"
3719         ;;
3720         power[3-7]*)
3721             cpuflags="-mcpu=$cpu"
3722         ;;
3723         cell)
3724             cpuflags="-mcpu=cell"
3725             enable ldbrx
3726         ;;
3727         e500mc)
3728             cpuflags="-mcpu=e500mc"
3729             disable altivec
3730         ;;
3731         e500v2)
3732             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3733             disable altivec
3734             disable dcbzl
3735         ;;
3736         e500)
3737             cpuflags="-mcpu=8540 -mhard-float"
3738             disable altivec
3739             disable dcbzl
3740         ;;
3741     esac
3742
3743 elif enabled sparc; then
3744
3745     case $cpu in
3746         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3747             cpuflags="-mcpu=$cpu"
3748         ;;
3749         ultrasparc*|niagara[234])
3750             cpuflags="-mcpu=$cpu"
3751         ;;
3752     esac
3753
3754 elif enabled x86; then
3755
3756     case $cpu in
3757         i[345]86|pentium)
3758             cpuflags="-march=$cpu"
3759             disable mmx
3760         ;;
3761         # targets that do NOT support nopl and conditional mov (cmov)
3762         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3763             cpuflags="-march=$cpu"
3764             disable i686
3765         ;;
3766         # targets that do support nopl and conditional mov (cmov)
3767         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3768         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3769             cpuflags="-march=$cpu"
3770             enable i686
3771             enable fast_cmov
3772         ;;
3773         # targets that do support conditional mov but on which it's slow
3774         pentium4|pentium4m|prescott|nocona)
3775             cpuflags="-march=$cpu"
3776             enable i686
3777             disable fast_cmov
3778         ;;
3779     esac
3780
3781 fi
3782
3783 if [ "$cpu" != generic ]; then
3784     add_cflags  $cpuflags
3785     add_asflags $cpuflags
3786 fi
3787
3788 # compiler sanity check
3789 check_exec <<EOF
3790 int main(void){ return 0; }
3791 EOF
3792 if test "$?" != 0; then
3793     echo "$cc is unable to create an executable file."
3794     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3795         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3796         echo "Only do this if you know what cross compiling means."
3797     fi
3798     die "C compiler test failed."
3799 fi
3800
3801 add_cppflags -D_ISOC99_SOURCE
3802 add_cxxflags -D__STDC_CONSTANT_MACROS
3803 check_cflags -std=c99
3804 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3805 #include <stdlib.h>
3806 EOF
3807 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3808 #include <stdlib.h>
3809 EOF
3810
3811 add_host_cppflags -D_ISOC99_SOURCE
3812 check_host_cflags -std=c99
3813 check_host_cflags -Wall
3814 check_host_cflags -O3
3815
3816 check_64bit(){
3817     arch32=$1
3818     arch64=$2
3819     expr=$3
3820     check_code cc "" "int test[2*($expr) - 1]" &&
3821         subarch=$arch64 || subarch=$arch32
3822 }
3823
3824 case "$arch" in
3825     aarch64|alpha|ia64)
3826         spic=$shared
3827     ;;
3828     mips)
3829         check_64bit mips mips64 '_MIPS_SIM > 1'
3830         spic=$shared
3831     ;;
3832     parisc)
3833         check_64bit parisc parisc64 'sizeof(void *) > 4'
3834         spic=$shared
3835     ;;
3836     ppc)
3837         check_64bit ppc ppc64 'sizeof(void *) > 4'
3838         spic=$shared
3839     ;;
3840     s390)
3841         check_64bit s390 s390x 'sizeof(void *) > 4'
3842         spic=$shared
3843     ;;
3844     sparc)
3845         check_64bit sparc sparc64 'sizeof(void *) > 4'
3846         spic=$shared
3847     ;;
3848     x86)
3849         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3850         if test "$subarch" = "x86_64"; then
3851             spic=$shared
3852         fi
3853     ;;
3854     ppc)
3855         check_cc <<EOF && subarch="ppc64"
3856         int test[(int)sizeof(char*) - 7];
3857 EOF
3858     ;;
3859 esac
3860
3861 enable $subarch
3862 enabled spic && enable_weak pic
3863
3864 # OS specific
3865 case $target_os in
3866     aix)
3867         SHFLAGS=-shared
3868         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3869         enabled shared && add_ldflags -Wl,-brtl
3870         ;;
3871     haiku)
3872         prefix_default="/boot/common"
3873         network_extralibs="-lnetwork"
3874         host_libs=
3875         ;;
3876     sunos)
3877         SHFLAGS='-shared -Wl,-h,$$(@F)'
3878         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3879         network_extralibs="-lsocket -lnsl"
3880         # When using suncc to build, the Solaris linker will mark
3881         # an executable with each instruction set encountered by
3882         # the Solaris assembler.  As our libraries contain their own
3883         # guards for processor-specific code, instead suppress
3884         # generation of the HWCAPS ELF section on Solaris x86 only.
3885         enabled_all suncc x86 &&
3886             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3887             add_ldflags -Wl,-M,mapfile
3888         nm_default='nm -P -g'
3889         ;;
3890     netbsd)
3891         disable symver
3892         oss_indev_extralibs="-lossaudio"
3893         oss_outdev_extralibs="-lossaudio"
3894         enabled gcc || check_ldflags -Wl,-zmuldefs
3895         ;;
3896     openbsd|bitrig)
3897         disable symver
3898         SHFLAGS='-shared'
3899         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3900         SLIB_INSTALL_LINKS=
3901         oss_indev_extralibs="-lossaudio"
3902         oss_outdev_extralibs="-lossaudio"
3903         ;;
3904     dragonfly)
3905         disable symver
3906         ;;
3907     freebsd)
3908         ;;
3909     bsd/os)
3910         add_extralibs -lpoll -lgnugetopt
3911         strip="strip -d"
3912         ;;
3913     darwin)
3914         test "${as#*gas-preprocessor.pl}" != "$as" || gas="${gas:=gas-preprocessor.pl} ${as:=$cc}"
3915         enabled ppc && add_asflags -force_cpusubtype_ALL
3916         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3917         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3918         strip="${strip} -x"
3919         add_ldflags -Wl,-dynamic,-search_paths_first
3920         SLIBSUF=".dylib"
3921         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3922         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3923         objformat="macho"
3924         enabled x86_64 && objformat="macho64"
3925         enabled_any pic shared ||
3926             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3927         ;;
3928     mingw32*)
3929         if test $target_os = "mingw32ce"; then
3930             disable network
3931         else
3932             target_os=mingw32
3933         fi
3934         LIBTARGET=i386
3935         if enabled x86_64; then
3936             LIBTARGET="i386:x86-64"
3937         elif enabled arm; then
3938             LIBTARGET=arm-wince
3939         fi
3940         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3941         check_ldflags -Wl,--nxcompat
3942         check_ldflags -Wl,--dynamicbase
3943         shlibdir_default="$bindir_default"
3944         SLIBPREF=""
3945         SLIBSUF=".dll"
3946         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3947         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3948         dlltool="${cross_prefix}dlltool"
3949         if check_cmd lib.exe -list; then
3950             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3951             if enabled x86_64; then
3952                 LIBTARGET=x64
3953             fi
3954         elif check_cmd $dlltool --version; then
3955             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3956         fi
3957         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3958         SLIB_INSTALL_LINKS=
3959         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3960         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3961         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3962         objformat="win32"
3963         ranlib=:
3964         enable dos_paths
3965         ;;
3966     win32|win64)
3967         disable symver
3968         if enabled shared; then
3969             # Link to the import library instead of the normal static library
3970             # for shared libs.
3971             LD_LIB='%.lib'
3972             # Cannot build both shared and static libs with MSVC or icl.
3973             disable static
3974         fi
3975         shlibdir_default="$bindir_default"
3976         SLIBPREF=""
3977         SLIBSUF=".dll"
3978         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3979         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3980         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3981         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3982         SLIB_INSTALL_LINKS=
3983         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3984         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3985         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3986         objformat="win32"
3987         ranlib=:
3988         enable dos_paths
3989         ;;
3990     cygwin*)
3991         target_os=cygwin
3992         shlibdir_default="$bindir_default"
3993         SLIBPREF="cyg"
3994         SLIBSUF=".dll"
3995         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3996         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3997         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3998         SLIB_INSTALL_LINKS=
3999         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4000         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4001         objformat="win32"
4002         enable dos_paths
4003         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4004         ;;
4005     *-dos|freedos|opendos)
4006         network_extralibs="-lsocket"
4007         objformat="coff"
4008         enable dos_paths
4009         add_cppflags -U__STRICT_ANSI__
4010         ;;
4011     linux)
4012         enable dv1394
4013         ;;
4014     irix*)
4015         target_os=irix
4016         ranlib="echo ignoring ranlib"
4017         ;;
4018     os/2*)
4019         strip="lxlite -CS"
4020         ln_s="cp -f"
4021         objformat="aout"
4022         add_cppflags -D_GNU_SOURCE
4023         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4024         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4025         LIBSUF="_s.a"
4026         SLIBPREF=""
4027         SLIBSUF=".dll"
4028         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4029         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4030         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4031             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4032             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4033             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4034             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4035             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4036         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4037             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4038         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4039         enable dos_paths
4040         enable_weak os2threads
4041         ;;
4042     gnu/kfreebsd)
4043         add_cppflags -D_BSD_SOURCE
4044         ;;
4045     gnu)
4046         ;;
4047     qnx)
4048         add_cppflags -D_QNX_SOURCE
4049         network_extralibs="-lsocket"
4050         ;;
4051     symbian)
4052         SLIBSUF=".dll"
4053         enable dos_paths
4054         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4055         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4056         add_ldflags -Wl,--target1-abs,--no-undefined \
4057                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4058                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup