avcodec/pgssubdec: Bail out of decode_rle() if error and AV_EF_EXPLODE is set
[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 [$target_os]
272   --target-exec=CMD        command to run executables on target
273   --target-path=DIR        path to view of build directory on target
274   --target-samples=DIR     path to samples directory on target
275   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
276   --toolchain=NAME         set tool defaults according to NAME
277   --nm=NM                  use nm tool NM [$nm_default]
278   --ar=AR                  use archive tool AR [$ar_default]
279   --as=AS                  use assembler AS [$as_default]
280   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
281   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
282   --cc=CC                  use C compiler CC [$cc_default]
283   --cxx=CXX                use C compiler CXX [$cxx_default]
284   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
285   --ld=LD                  use linker LD [$ld_default]
286   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
287   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
288   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
289   --host-cc=HOSTCC         use host C compiler HOSTCC
290   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
291   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
292   --host-ld=HOSTLD         use host linker HOSTLD
293   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
294   --host-libs=HLIBS        use libs HLIBS when linking for host
295   --host-os=OS             compiler host OS [$target_os]
296   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
297   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
298   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
299   --extra-libs=ELIBS       add ELIBS [$ELIBS]
300   --extra-version=STRING   version string suffix []
301   --optflags=OPTFLAGS      override optimization-related compiler flags
302   --build-suffix=SUFFIX    library name suffix []
303   --enable-pic             build position-independent code
304   --enable-thumb           compile for Thumb instruction set
305   --enable-lto             use link-time optimization
306
307 Advanced options (experts only):
308   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
309   --disable-symver         disable symbol versioning
310   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
311   --disable-safe-bitstream-reader
312                            disable buffer boundary checking in bitreaders
313                            (faster, but may crash)
314   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
315   --enable-sram            allow use of on-chip SRAM
316   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
317
318 Optimization options (experts only):
319   --disable-asm            disable all assembly optimizations
320   --disable-altivec        disable AltiVec optimizations
321   --disable-amd3dnow       disable 3DNow! optimizations
322   --disable-amd3dnowext    disable 3DNow! extended optimizations
323   --disable-mmx            disable MMX optimizations
324   --disable-mmxext         disable MMXEXT optimizations
325   --disable-sse            disable SSE optimizations
326   --disable-sse2           disable SSE2 optimizations
327   --disable-sse3           disable SSE3 optimizations
328   --disable-ssse3          disable SSSE3 optimizations
329   --disable-sse4           disable SSE4 optimizations
330   --disable-sse42          disable SSE4.2 optimizations
331   --disable-avx            disable AVX optimizations
332   --disable-xop            disable XOP optimizations
333   --disable-fma3           disable FMA3 optimizations
334   --disable-fma4           disable FMA4 optimizations
335   --disable-avx2           disable AVX2 optimizations
336   --disable-armv5te        disable armv5te optimizations
337   --disable-armv6          disable armv6 optimizations
338   --disable-armv6t2        disable armv6t2 optimizations
339   --disable-vfp            disable VFP optimizations
340   --disable-neon           disable NEON optimizations
341   --disable-inline-asm     disable use of inline assembly
342   --disable-yasm           disable use of nasm/yasm assembly
343   --disable-mips32r2       disable MIPS32R2 optimizations
344   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
345   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
346   --disable-mipsfpu        disable floating point MIPS optimizations
347   --disable-fast-unaligned consider unaligned accesses slow
348
349 Developer options (useful when working on FFmpeg itself):
350   --disable-debug          disable debugging symbols
351   --enable-debug=LEVEL     set the debug level [$debuglevel]
352   --disable-optimizations  disable compiler optimizations
353   --enable-extra-warnings  enable more compiler warnings
354   --disable-stripping      disable stripping of executables and shared libraries
355   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
356                            2 causes a slowdown at runtime.
357   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
358   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
359                            leaks and errors, using the specified valgrind binary.
360                            Cannot be combined with --target-exec
361   --enable-ftrapv          Trap arithmetic overflows
362   --samples=PATH           location of test samples for FATE, if not set use
363                            \$FATE_SAMPLES at make invocation time.
364   --enable-neon-clobber-test check NEON registers for clobbering (should be
365                            used only for debugging purposes)
366   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
367                            should be used only for debugging purposes)
368   --enable-random          randomly enable/disable components
369   --disable-random
370   --enable-random=LIST     randomly enable/disable specific components or
371   --disable-random=LIST    component groups. LIST is a comma-separated list
372                            of NAME[:PROB] entries where NAME is a component
373                            (group) and PROB the probability associated with
374                            NAME (default 0.5).
375   --random-seed=VALUE      seed value for --enable/disable-random
376
377 NOTE: Object files are built at the place where configure is launched.
378 EOF
379   exit 0
380 }
381
382 quotes='""'
383
384 log(){
385     echo "$@" >> $logfile
386 }
387
388 log_file(){
389     log BEGIN $1
390     pr -n -t $1 >> $logfile
391     log END $1
392 }
393
394 echolog(){
395     log "$@"
396     echo "$@"
397 }
398
399 warn(){
400     log "WARNING: $*"
401     WARNINGS="${WARNINGS}WARNING: $*\n"
402 }
403
404 die(){
405     echolog "$@"
406     cat <<EOF
407
408 If you think configure made a mistake, make sure you are using the latest
409 version from Git.  If the latest version fails, report the problem to the
410 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
411 EOF
412     if disabled logging; then
413         cat <<EOF
414 Rerun configure with logging enabled (do not use --disable-logging), and
415 include the log this produces with your report.
416 EOF
417     else
418         cat <<EOF
419 Include the log file "$logfile" produced by configure as this will help
420 solve the problem.
421 EOF
422     fi
423     exit 1
424 }
425
426 # Avoid locale weirdness, besides we really just want to translate ASCII.
427 toupper(){
428     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
429 }
430
431 tolower(){
432     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
433 }
434
435 c_escape(){
436     echo "$*" | sed 's/["\\]/\\\0/g'
437 }
438
439 sh_quote(){
440     v=$(echo "$1" | sed "s/'/'\\\\''/g")
441     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
442     echo "$v"
443 }
444
445 cleanws(){
446     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
447 }
448
449 filter(){
450     pat=$1
451     shift
452     for v; do
453         eval "case $v in $pat) echo $v ;; esac"
454     done
455 }
456
457 filter_out(){
458     pat=$1
459     shift
460     for v; do
461         eval "case $v in $pat) ;; *) echo $v ;; esac"
462     done
463 }
464
465 map(){
466     m=$1
467     shift
468     for v; do eval $m; done
469 }
470
471 add_suffix(){
472     suffix=$1
473     shift
474     for v; do echo ${v}${suffix}; done
475 }
476
477 set_all(){
478     value=$1
479     shift
480     for var in $*; do
481         eval $var=$value
482     done
483 }
484
485 set_weak(){
486     value=$1
487     shift
488     for var; do
489         eval : \${$var:=$value}
490     done
491 }
492
493 sanitize_var_name(){
494     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
495 }
496
497 set_safe(){
498     var=$1
499     shift
500     eval $(sanitize_var_name "$var")='$*'
501 }
502
503 get_safe(){
504     eval echo \$$(sanitize_var_name "$1")
505 }
506
507 pushvar(){
508     for pvar in $*; do
509         eval level=\${${pvar}_level:=0}
510         eval ${pvar}_${level}="\$$pvar"
511         eval ${pvar}_level=$(($level+1))
512     done
513 }
514
515 popvar(){
516     for pvar in $*; do
517         eval level=\${${pvar}_level:-0}
518         test $level = 0 && continue
519         eval level=$(($level-1))
520         eval $pvar="\${${pvar}_${level}}"
521         eval ${pvar}_level=$level
522         eval unset ${pvar}_${level}
523     done
524 }
525
526 enable(){
527     set_all yes $*
528 }
529
530 disable(){
531     set_all no $*
532 }
533
534 enable_weak(){
535     set_weak yes $*
536 }
537
538 disable_weak(){
539     set_weak no $*
540 }
541
542 enable_safe(){
543     for var; do
544         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
545     done
546 }
547
548 disable_safe(){
549     for var; do
550         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
551     done
552 }
553
554 do_enable_deep(){
555     for var; do
556         enabled $var && continue
557         eval sel="\$${var}_select"
558         eval sgs="\$${var}_suggest"
559         pushvar var sgs
560         enable_deep $sel
561         popvar sgs
562         enable_deep_weak $sgs
563         popvar var
564     done
565 }
566
567 enable_deep(){
568     do_enable_deep $*
569     enable $*
570 }
571
572 enable_deep_weak(){
573     for var; do
574         disabled $var && continue
575         pushvar var
576         do_enable_deep $var
577         popvar var
578         enable_weak $var
579     done
580 }
581
582 enabled(){
583     test "${1#!}" = "$1" && op== || op=!=
584     eval test "x\$${1#!}" $op "xyes"
585 }
586
587 disabled(){
588     test "${1#!}" = "$1" && op== || op=!=
589     eval test "x\$${1#!}" $op "xno"
590 }
591
592 enabled_all(){
593     for opt; do
594         enabled $opt || return 1
595     done
596 }
597
598 disabled_all(){
599     for opt; do
600         disabled $opt || return 1
601     done
602 }
603
604 enabled_any(){
605     for opt; do
606         enabled $opt && return 0
607     done
608 }
609
610 disabled_any(){
611     for opt; do
612         disabled $opt && return 0
613     done
614     return 1
615 }
616
617 set_default(){
618     for opt; do
619         eval : \${$opt:=\$${opt}_default}
620     done
621 }
622
623 is_in(){
624     value=$1
625     shift
626     for var in $*; do
627         [ $var = $value ] && return 0
628     done
629     return 1
630 }
631
632 do_check_deps(){
633     for cfg; do
634         cfg="${cfg#!}"
635         enabled ${cfg}_checking && die "Circular dependency for $cfg."
636         disabled ${cfg}_checking && continue
637         enable ${cfg}_checking
638         append allopts $cfg
639
640         eval dep_all="\$${cfg}_deps"
641         eval dep_any="\$${cfg}_deps_any"
642         eval dep_sel="\$${cfg}_select"
643         eval dep_sgs="\$${cfg}_suggest"
644         eval dep_ifa="\$${cfg}_if"
645         eval dep_ifn="\$${cfg}_if_any"
646
647         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
648         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
649         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
650
651         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
652         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
653         enabled_all  $dep_all || disable $cfg
654         enabled_any  $dep_any || disable $cfg
655         disabled_any $dep_sel && disable $cfg
656
657         if enabled $cfg; then
658             enable_deep $dep_sel
659             enable_deep_weak $dep_sgs
660         fi
661
662         disable ${cfg}_checking
663     done
664 }
665
666 check_deps(){
667     unset allopts
668
669     do_check_deps "$@"
670
671     for cfg in $allopts; do
672         enabled $cfg || continue
673         eval dep_extralibs="\$${cfg}_extralibs"
674         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
675     done
676 }
677
678 print_config(){
679     pfx=$1
680     files=$2
681     shift 2
682     map 'eval echo "$v \${$v:-no}"' "$@" |
683     awk "BEGIN { split(\"$files\", files) }
684         {
685             c = \"$pfx\" toupper(\$1);
686             v = \$2;
687             sub(/yes/, 1, v);
688             sub(/no/,  0, v);
689             for (f in files) {
690                 file = files[f];
691                 if (file ~ /\\.h\$/) {
692                     printf(\"#define %s %d\\n\", c, v) >>file;
693                 } else if (file ~ /\\.asm\$/) {
694                     printf(\"%%define %s %d\\n\", c, v) >>file;
695                 } else if (file ~ /\\.mak\$/) {
696                     n = -v ? \"\" : \"!\";
697                     printf(\"%s%s=yes\\n\", n, c) >>file;
698                 } else if (file ~ /\\.texi\$/) {
699                     pre = -v ? \"\" : \"@c \";
700                     yesno = \$2;
701                     c2 = tolower(c);
702                     gsub(/_/, \"-\", c2);
703                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
704                 }
705             }
706         }"
707 }
708
709 print_enabled(){
710     suf=$1
711     shift
712     for v; do
713         enabled $v && printf "%s\n" ${v%$suf};
714     done
715 }
716
717 append(){
718     var=$1
719     shift
720     eval "$var=\"\$$var $*\""
721 }
722
723 prepend(){
724     var=$1
725     shift
726     eval "$var=\"$* \$$var\""
727 }
728
729 unique(){
730     var=$1
731     uniq_list=""
732     for tok in $(eval echo \$$var); do
733         uniq_list="$(filter_out $tok $uniq_list) $tok"
734     done
735     eval "$var=\"${uniq_list}\""
736 }
737
738 add_cppflags(){
739     append CPPFLAGS "$@"
740 }
741
742 add_cflags(){
743     append CFLAGS $($cflags_filter "$@")
744 }
745
746 add_cxxflags(){
747     append CXXFLAGS $($cflags_filter "$@")
748 }
749
750 add_asflags(){
751     append ASFLAGS $($asflags_filter "$@")
752 }
753
754 add_ldflags(){
755     append LDFLAGS $($ldflags_filter "$@")
756 }
757
758 add_stripflags(){
759     append ASMSTRIPFLAGS "$@"
760 }
761
762 add_extralibs(){
763     prepend extralibs $($ldflags_filter "$@")
764 }
765
766 add_host_cppflags(){
767     append host_cppflags "$@"
768 }
769
770 add_host_cflags(){
771     append host_cflags $($host_cflags_filter "$@")
772 }
773
774 add_host_ldflags(){
775     append host_ldflags $($host_ldflags_filter "$@")
776 }
777
778 add_compat(){
779     append compat_objs $1
780     shift
781     map 'add_cppflags -D$v' "$@"
782 }
783
784 check_cmd(){
785     log "$@"
786     "$@" >> $logfile 2>&1
787 }
788
789 check_stat(){
790     log check_stat "$@"
791     stat "$1" >> $logfile 2>&1
792 }
793
794 cc_o(){
795     eval printf '%s\\n' $CC_O
796 }
797
798 cc_e(){
799     eval printf '%s\\n' $CC_E
800 }
801
802 check_cc(){
803     log check_cc "$@"
804     cat > $TMPC
805     log_file $TMPC
806     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
807 }
808
809 check_cxx(){
810     log check_cxx "$@"
811     cat > $TMPCPP
812     log_file $TMPCPP
813     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
814 }
815
816 check_oc(){
817     log check_oc "$@"
818     cat > $TMPM
819     log_file $TMPM
820     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
821 }
822
823 check_cpp(){
824     log check_cpp "$@"
825     cat > $TMPC
826     log_file $TMPC
827     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
828 }
829
830 as_o(){
831     eval printf '%s\\n' $AS_O
832 }
833
834 check_as(){
835     log check_as "$@"
836     cat > $TMPS
837     log_file $TMPS
838     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
839 }
840
841 check_inline_asm(){
842     log check_inline_asm "$@"
843     name="$1"
844     code="$2"
845     shift 2
846     disable $name
847     check_cc "$@" <<EOF && enable $name
848 void foo(void){ __asm__ volatile($code); }
849 EOF
850 }
851
852 check_insn(){
853     log check_insn "$@"
854     check_inline_asm ${1}_inline "\"$2\""
855     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
856 }
857
858 check_yasm(){
859     log check_yasm "$@"
860     echo "$1" > $TMPS
861     log_file $TMPS
862     shift 1
863     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
864 }
865
866 ld_o(){
867     eval printf '%s\\n' $LD_O
868 }
869
870 check_ld(){
871     log check_ld "$@"
872     type=$1
873     shift 1
874     flags=$(filter_out '-l*|*.so' $@)
875     libs=$(filter '-l*|*.so' $@)
876     check_$type $($cflags_filter $flags) || return
877     flags=$($ldflags_filter $flags)
878     libs=$($ldflags_filter $libs)
879     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
880 }
881
882 print_include(){
883     hdr=$1
884     test "${hdr%.h}" = "${hdr}" &&
885         echo "#include $hdr"    ||
886         echo "#include <$hdr>"
887 }
888
889 check_code(){
890     log check_code "$@"
891     check=$1
892     headers=$2
893     code=$3
894     shift 3
895     {
896         for hdr in $headers; do
897             print_include $hdr
898         done
899         echo "int main(void) { $code; return 0; }"
900     } | check_$check "$@"
901 }
902
903 check_cppflags(){
904     log check_cppflags "$@"
905     check_cc "$@" <<EOF && append CPPFLAGS "$@"
906 int x;
907 EOF
908 }
909
910 test_cflags(){
911     log test_cflags "$@"
912     set -- $($cflags_filter "$@")
913     check_cc "$@" <<EOF
914 int x;
915 EOF
916 }
917
918 check_cflags(){
919     log check_cflags "$@"
920     test_cflags "$@" && add_cflags "$@"
921 }
922
923 check_cxxflags(){
924     log check_cxxflags "$@"
925     set -- $($cflags_filter "$@")
926     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
927 int x;
928 EOF
929 }
930
931 test_ldflags(){
932     log test_ldflags "$@"
933     check_ld "cc" "$@" <<EOF
934 int main(void){ return 0; }
935 EOF
936 }
937
938 check_ldflags(){
939     log check_ldflags "$@"
940     test_ldflags "$@" && add_ldflags "$@"
941 }
942
943 test_stripflags(){
944     log test_stripflags "$@"
945     # call check_cc to get a fresh TMPO
946     check_cc <<EOF
947 int main(void) { return 0; }
948 EOF
949     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
950 }
951
952 check_stripflags(){
953     log check_stripflags "$@"
954     test_stripflags "$@" && add_stripflags "$@"
955 }
956
957 check_header(){
958     log check_header "$@"
959     header=$1
960     shift
961     disable_safe $header
962     check_cpp "$@" <<EOF && enable_safe $header
963 #include <$header>
964 int x;
965 EOF
966 }
967
968 check_header_oc(){
969     log check_header_oc "$@"
970     rm -f -- "$TMPO"
971     header=$1
972     shift
973     disable_safe $header
974     {
975        echo "#include <$header>"
976        echo "int main(void) { return 0; }"
977     } | check_oc && check_stat "$TMPO" && enable_safe $headers
978 }
979
980 check_func(){
981     log check_func "$@"
982     func=$1
983     shift
984     disable $func
985     check_ld "cc" "$@" <<EOF && enable $func
986 extern int $func();
987 int main(void){ $func(); }
988 EOF
989 }
990
991 check_mathfunc(){
992     log check_mathfunc "$@"
993     func=$1
994     narg=$2
995     shift 2
996     test $narg = 2 && args="f, g" || args="f"
997     disable $func
998     check_ld "cc" "$@" <<EOF && enable $func
999 #include <math.h>
1000 float foo(float f, float g) { return $func($args); }
1001 int main(void){ return (int) foo; }
1002 EOF
1003 }
1004
1005 check_func_headers(){
1006     log check_func_headers "$@"
1007     headers=$1
1008     funcs=$2
1009     shift 2
1010     {
1011         for hdr in $headers; do
1012             print_include $hdr
1013         done
1014         for func in $funcs; do
1015             echo "long check_$func(void) { return (long) $func; }"
1016         done
1017         echo "int main(void) { return 0; }"
1018     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1019 }
1020
1021 check_class_headers_cpp(){
1022     log check_class_headers_cpp "$@"
1023     headers=$1
1024     classes=$2
1025     shift 2
1026     {
1027         for hdr in $headers; do
1028             echo "#include <$hdr>"
1029         done
1030         echo "int main(void) { "
1031         i=1
1032         for class in $classes; do
1033             echo "$class obj$i;"
1034             i=$(expr $i + 1)
1035         done
1036         echo "return 0; }"
1037     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1038 }
1039
1040 check_cpp_condition(){
1041     log check_cpp_condition "$@"
1042     header=$1
1043     condition=$2
1044     shift 2
1045     check_cpp "$@" <<EOF
1046 #include <$header>
1047 #if !($condition)
1048 #error "unsatisfied condition: $condition"
1049 #endif
1050 EOF
1051 }
1052
1053 check_lib(){
1054     log check_lib "$@"
1055     header="$1"
1056     func="$2"
1057     shift 2
1058     check_header $header && check_func $func "$@" && add_extralibs "$@"
1059 }
1060
1061 check_lib2(){
1062     log check_lib2 "$@"
1063     headers="$1"
1064     funcs="$2"
1065     shift 2
1066     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1067 }
1068
1069 check_lib_cpp(){
1070     log check_lib_cpp "$@"
1071     headers="$1"
1072     classes="$2"
1073     shift 2
1074     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1075 }
1076
1077 check_pkg_config(){
1078     log check_pkg_config "$@"
1079     pkgandversion="$1"
1080     pkg="${1%% *}"
1081     headers="$2"
1082     funcs="$3"
1083     shift 3
1084     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1085     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1086     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1087     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1088         set_safe ${pkg}_cflags $pkg_cflags   &&
1089         set_safe ${pkg}_libs   $pkg_libs
1090 }
1091
1092 check_exec(){
1093     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1094 }
1095
1096 check_exec_crash(){
1097     code=$(cat)
1098
1099     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1100     # are safe but may not be available everywhere.  Thus we use
1101     # raise(SIGTERM) instead.  The check is run in a subshell so we
1102     # can redirect the "Terminated" message from the shell.  SIGBUS
1103     # is not defined by standard C so it is used conditionally.
1104
1105     (check_exec "$@") >> $logfile 2>&1 <<EOF
1106 #include <signal.h>
1107 static void sighandler(int sig){
1108     raise(SIGTERM);
1109 }
1110 int foo(void){
1111     $code
1112 }
1113 int (*func_ptr)(void) = foo;
1114 int main(void){
1115     signal(SIGILL, sighandler);
1116     signal(SIGFPE, sighandler);
1117     signal(SIGSEGV, sighandler);
1118 #ifdef SIGBUS
1119     signal(SIGBUS, sighandler);
1120 #endif
1121     return func_ptr();
1122 }
1123 EOF
1124 }
1125
1126 check_type(){
1127     log check_type "$@"
1128     headers=$1
1129     type=$2
1130     shift 2
1131     disable_safe "$type"
1132     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1133 }
1134
1135 check_struct(){
1136     log check_struct "$@"
1137     headers=$1
1138     struct=$2
1139     member=$3
1140     shift 3
1141     disable_safe "${struct}_${member}"
1142     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1143         enable_safe "${struct}_${member}"
1144 }
1145
1146 check_builtin(){
1147     log check_builtin "$@"
1148     name=$1
1149     headers=$2
1150     builtin=$3
1151     shift 3
1152     disable "$name"
1153     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1154 }
1155
1156 check_compile_assert(){
1157     log check_compile_assert "$@"
1158     name=$1
1159     headers=$2
1160     condition=$3
1161     shift 3
1162     disable "$name"
1163     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1164 }
1165
1166 require(){
1167     name="$1"
1168     header="$2"
1169     func="$3"
1170     shift 3
1171     check_lib $header $func "$@" || die "ERROR: $name not found"
1172 }
1173
1174 require2(){
1175     name="$1"
1176     headers="$2"
1177     func="$3"
1178     shift 3
1179     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1180 }
1181
1182 require_cpp(){
1183     name="$1"
1184     headers="$2"
1185     classes="$3"
1186     shift 3
1187     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1188 }
1189
1190 require_pkg_config(){
1191     pkg="$1"
1192     check_pkg_config "$@" || die "ERROR: $pkg not found"
1193     add_cflags    $(get_safe ${pkg}_cflags)
1194     add_extralibs $(get_safe ${pkg}_libs)
1195 }
1196
1197 require_libfreetype(){
1198     log require_libfreetype "$@"
1199     pkg="freetype2"
1200     check_cmd $pkg_config --exists --print-errors $pkg \
1201       || die "ERROR: $pkg not found"
1202     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1203     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1204     {
1205         echo "#include <ft2build.h>"
1206         echo "#include FT_FREETYPE_H"
1207         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1208         echo "int main(void) { return 0; }"
1209     } | check_ld "cc" $pkg_cflags $pkg_libs \
1210       && set_safe ${pkg}_cflags $pkg_cflags \
1211       && set_safe ${pkg}_libs   $pkg_libs \
1212       || die "ERROR: $pkg not found"
1213     add_cflags    $(get_safe ${pkg}_cflags)
1214     add_extralibs $(get_safe ${pkg}_libs)
1215 }
1216
1217 hostcc_e(){
1218     eval printf '%s\\n' $HOSTCC_E
1219 }
1220
1221 hostcc_o(){
1222     eval printf '%s\\n' $HOSTCC_O
1223 }
1224
1225 check_host_cc(){
1226     log check_host_cc "$@"
1227     cat > $TMPC
1228     log_file $TMPC
1229     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1230 }
1231
1232 check_host_cpp(){
1233     log check_host_cpp "$@"
1234     cat > $TMPC
1235     log_file $TMPC
1236     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1237 }
1238
1239 check_host_cppflags(){
1240     log check_host_cppflags "$@"
1241     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1242 int x;
1243 EOF
1244 }
1245
1246 check_host_cflags(){
1247     log check_host_cflags "$@"
1248     set -- $($host_cflags_filter "$@")
1249     check_host_cc "$@" <<EOF && append host_cflags "$@"
1250 int x;
1251 EOF
1252 }
1253
1254 check_host_cpp_condition(){
1255     log check_host_cpp_condition "$@"
1256     header=$1
1257     condition=$2
1258     shift 2
1259     check_host_cpp "$@" <<EOF
1260 #include <$header>
1261 #if !($condition)
1262 #error "unsatisfied condition: $condition"
1263 #endif
1264 EOF
1265 }
1266
1267 apply(){
1268     file=$1
1269     shift
1270     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1271 }
1272
1273 cp_if_changed(){
1274     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1275     mkdir -p "$(dirname $2)"
1276     $cp_f "$1" "$2"
1277 }
1278
1279 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1280 # system-dependent things.
1281
1282 COMPONENT_LIST="
1283     bsfs
1284     decoders
1285     demuxers
1286     encoders
1287     filters
1288     hwaccels
1289     indevs
1290     muxers
1291     outdevs
1292     parsers
1293     protocols
1294 "
1295
1296 EXAMPLE_LIST="
1297     avio_reading_example
1298     decoding_encoding_example
1299     demuxing_decoding_example
1300     filter_audio_example
1301     filtering_audio_example
1302     filtering_video_example
1303     metadata_example
1304     muxing_example
1305     remuxing_example
1306     resampling_audio_example
1307     scaling_video_example
1308     transcode_aac_example
1309     transcoding_example
1310 "
1311
1312 EXTERNAL_LIBRARY_LIST="
1313     avisynth
1314     bzlib
1315     crystalhd
1316     decklink
1317     frei0r
1318     gnutls
1319     iconv
1320     ladspa
1321     libaacplus
1322     libass
1323     libbluray
1324     libbs2b
1325     libcaca
1326     libcdio
1327     libcelt
1328     libdc1394
1329     libfaac
1330     libfdk_aac
1331     libflite
1332     libfontconfig
1333     libfreetype
1334     libgme
1335     libgsm
1336     libiec61883
1337     libilbc
1338     libmodplug
1339     libmp3lame
1340     libnut
1341     libopencore_amrnb
1342     libopencore_amrwb
1343     libopencv
1344     libopenjpeg
1345     libopus
1346     libpulse
1347     libquvi
1348     librtmp
1349     libschroedinger
1350     libshine
1351     libsoxr
1352     libspeex
1353     libssh
1354     libstagefright_h264
1355     libtheora
1356     libtwolame
1357     libutvideo
1358     libv4l2
1359     libvidstab
1360     libvo_aacenc
1361     libvo_amrwbenc
1362     libvorbis
1363     libvpx
1364     libwavpack
1365     libwebp
1366     libx264
1367     libx265
1368     libxavs
1369     libxvid
1370     libzmq
1371     libzvbi
1372     openal
1373     opencl
1374     opengl
1375     openssl
1376     x11grab
1377     xlib
1378     zlib
1379 "
1380
1381 DOCUMENT_LIST="
1382     doc
1383     htmlpages
1384     manpages
1385     podpages
1386     txtpages
1387 "
1388
1389 FEATURE_LIST="
1390     ftrapv
1391     gray
1392     hardcoded_tables
1393     runtime_cpudetect
1394     safe_bitstream_reader
1395     shared
1396     small
1397     sram
1398     static
1399     swscale_alpha
1400 "
1401
1402 HWACCEL_LIST="
1403     dxva2
1404     vaapi
1405     vda
1406     vdpau
1407     xvmc
1408 "
1409
1410 LIBRARY_LIST="
1411     avcodec
1412     avdevice
1413     avfilter
1414     avformat
1415     avresample
1416     avutil
1417     postproc
1418     swresample
1419     swscale
1420 "
1421
1422 LICENSE_LIST="
1423     gpl
1424     nonfree
1425     version3
1426 "
1427
1428 PROGRAM_LIST="
1429     ffplay
1430     ffprobe
1431     ffserver
1432     ffmpeg
1433 "
1434
1435 SUBSYSTEM_LIST="
1436     dct
1437     dwt
1438     error_resilience
1439     fast_unaligned
1440     fft
1441     lsp
1442     lzo
1443     mdct
1444     network
1445     rdft
1446 "
1447
1448 CONFIG_LIST="
1449     $COMPONENT_LIST
1450     $DOCUMENT_LIST
1451     $EXAMPLE_LIST
1452     $EXTERNAL_LIBRARY_LIST
1453     $FEATURE_LIST
1454     $HWACCEL_LIST
1455     $LICENSE_LIST
1456     $LIBRARY_LIST
1457     $PROGRAM_LIST
1458     $SUBSYSTEM_LIST
1459     fontconfig
1460     incompatible_libav_abi
1461     memalign_hack
1462     memory_poisoning
1463     neon_clobber_test
1464     pic
1465     pod2man
1466     raise_major
1467     thumb
1468     xmm_clobber_test
1469 "
1470
1471 THREADS_LIST="
1472     pthreads
1473     os2threads
1474     w32threads
1475 "
1476
1477 ATOMICS_LIST="
1478     atomics_gcc
1479     atomics_suncc
1480     atomics_win32
1481 "
1482
1483 ARCH_LIST="
1484     aarch64
1485     alpha
1486     arm
1487     avr32
1488     avr32_ap
1489     avr32_uc
1490     bfin
1491     ia64
1492     m68k
1493     mips
1494     mips64
1495     parisc
1496     ppc
1497     ppc64
1498     s390
1499     sh4
1500     sparc
1501     sparc64
1502     tilegx
1503     tilepro
1504     tomi
1505     x86
1506     x86_32
1507     x86_64
1508 "
1509
1510 ARCH_EXT_LIST_ARM="
1511     armv5te
1512     armv6
1513     armv6t2
1514     armv8
1515     neon
1516     vfp
1517     vfpv3
1518 "
1519
1520 ARCH_EXT_LIST_MIPS="
1521     mipsfpu
1522     mips32r2
1523     mipsdspr1
1524     mipsdspr2
1525 "
1526
1527 ARCH_EXT_LIST_X86_SIMD="
1528     amd3dnow
1529     amd3dnowext
1530     avx
1531     avx2
1532     fma3
1533     fma4
1534     mmx
1535     mmxext
1536     sse
1537     sse2
1538     sse3
1539     sse4
1540     sse42
1541     ssse3
1542     xop
1543 "
1544
1545 ARCH_EXT_LIST_PPC="
1546     altivec
1547     dcbzl
1548     ldbrx
1549     ppc4xx
1550     vsx
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     audiodsp
1799     blockdsp
1800     bswapdsp
1801     cabac
1802     dsputil
1803     exif
1804     frame_thread_encoder
1805     gcrypt
1806     golomb
1807     gplv3
1808     h263dsp
1809     h264chroma
1810     h264dsp
1811     h264pred
1812     h264qpel
1813     hpeldsp
1814     huffman
1815     huffyuvdsp
1816     huffyuvencdsp
1817     intrax8
1818     lgplv3
1819     llauddsp
1820     llviddsp
1821     lpc
1822     mpeg_er
1823     mpegaudio
1824     mpegaudiodsp
1825     mpegvideo
1826     mpegvideoenc
1827     nettle
1828     qpeldsp
1829     rangecoder
1830     riffdec
1831     riffenc
1832     rtpdec
1833     rtpenc_chain
1834     sinewin
1835     tpeldsp
1836     videodsp
1837     vp3dsp
1838 "
1839
1840 CMDLINE_SELECT="
1841     $ARCH_EXT_LIST
1842     $CONFIG_LIST
1843     $HAVE_LIST_CMDLINE
1844     $THREADS_LIST
1845     asm
1846     cross_compile
1847     debug
1848     extra_warnings
1849     logging
1850     lto
1851     optimizations
1852     rpath
1853     stripping
1854 "
1855
1856 PATHS_LIST="
1857     bindir
1858     datadir
1859     docdir
1860     incdir
1861     libdir
1862     mandir
1863     prefix
1864     shlibdir
1865 "
1866
1867 CMDLINE_SET="
1868     $PATHS_LIST
1869     ar
1870     arch
1871     as
1872     assert_level
1873     build_suffix
1874     cc
1875     cpu
1876     cross_prefix
1877     cxx
1878     dep_cc
1879     extra_version
1880     gas
1881     host_cc
1882     host_cflags
1883     host_ld
1884     host_ldflags
1885     host_libs
1886     host_os
1887     install
1888     ld
1889     logfile
1890     malloc_prefix
1891     nm
1892     optflags
1893     pkg_config
1894     pkg_config_flags
1895     progs_suffix
1896     random_seed
1897     ranlib
1898     samples
1899     strip
1900     sws_max_filter_size
1901     sysinclude
1902     sysroot
1903     target_exec
1904     target_os
1905     target_path
1906     target_samples
1907     tempprefix
1908     toolchain
1909     valgrind
1910     yasmexe
1911 "
1912
1913 CMDLINE_APPEND="
1914     extra_cflags
1915     extra_cxxflags
1916     host_cppflags
1917 "
1918
1919 # code dependency declarations
1920
1921 # architecture extensions
1922
1923 armv5te_deps="arm"
1924 armv6_deps="arm"
1925 armv6t2_deps="arm"
1926 armv8_deps="aarch64"
1927 neon_deps_any="aarch64 arm"
1928 vfp_deps_any="aarch64 arm"
1929 vfpv3_deps="vfp"
1930
1931 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1932
1933 mipsfpu_deps="mips"
1934 mips32r2_deps="mips"
1935 mipsdspr1_deps="mips"
1936 mipsdspr2_deps="mips"
1937
1938 altivec_deps="ppc"
1939 ppc4xx_deps="ppc"
1940 vsx_deps="ppc"
1941
1942 cpunop_deps="i686"
1943 x86_64_select="i686"
1944 x86_64_suggest="fast_cmov"
1945
1946 amd3dnow_deps="mmx"
1947 amd3dnowext_deps="amd3dnow"
1948 i686_deps="x86"
1949 mmx_deps="x86"
1950 mmxext_deps="mmx"
1951 sse_deps="mmxext"
1952 sse2_deps="sse"
1953 sse3_deps="sse2"
1954 ssse3_deps="sse3"
1955 sse4_deps="ssse3"
1956 sse42_deps="sse4"
1957 avx_deps="sse42"
1958 xop_deps="avx"
1959 fma3_deps="avx"
1960 fma4_deps="avx"
1961 avx2_deps="avx"
1962
1963 mmx_external_deps="yasm"
1964 mmx_inline_deps="inline_asm"
1965 mmx_suggest="mmx_external mmx_inline"
1966
1967 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1968     eval dep=\$${ext}_deps
1969     eval ${ext}_external_deps='"${dep}_external"'
1970     eval ${ext}_inline_deps='"${dep}_inline"'
1971     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1972 done
1973
1974 aligned_stack_if_any="aarch64 ppc x86"
1975 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1976 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1977 fast_unaligned_if_any="aarch64 ppc x86"
1978
1979 need_memalign="altivec neon sse"
1980
1981 # system capabilities
1982
1983 symver_if_any="symver_asm_label symver_gnu_asm"
1984
1985 # threading support
1986 atomics_gcc_if="sync_val_compare_and_swap"
1987 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1988 atomics_win32_if="MemoryBarrier"
1989 atomics_native_if_any="$ATOMICS_LIST"
1990 w32threads_deps="atomics_native"
1991 threads_if_any="$THREADS_LIST"
1992
1993 # subsystems
1994 dct_select="rdft"
1995 error_resilience_select="dsputil"
1996 frame_thread_encoder_deps="encoders threads"
1997 intrax8_select="error_resilience"
1998 mdct_select="fft"
1999 rdft_select="fft"
2000 mpeg_er_select="error_resilience"
2001 mpegaudio_select="mpegaudiodsp"
2002 mpegaudiodsp_select="dct"
2003 mpegvideo_select="blockdsp dsputil h264chroma hpeldsp videodsp"
2004 mpegvideoenc_select="dsputil mpegvideo qpeldsp"
2005
2006 # decoders / encoders
2007 aac_decoder_select="mdct sinewin"
2008 aac_encoder_select="audio_frame_queue mdct sinewin"
2009 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2010 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2011 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2012 ac3_encoder_select="ac3dsp audiodsp dsputil mdct"
2013 ac3_fixed_encoder_select="ac3dsp audiodsp dsputil mdct"
2014 aic_decoder_select="dsputil golomb"
2015 alac_encoder_select="lpc"
2016 als_decoder_select="bswapdsp"
2017 amrnb_decoder_select="lsp"
2018 amrwb_decoder_select="lsp"
2019 amv_decoder_select="sp5x_decoder exif"
2020 amv_encoder_select="aandcttables"
2021 ape_decoder_select="bswapdsp llauddsp"
2022 asv1_decoder_select="blockdsp bswapdsp dsputil"
2023 asv1_encoder_select="bswapdsp dsputil"
2024 asv2_decoder_select="blockdsp bswapdsp dsputil"
2025 asv2_encoder_select="bswapdsp dsputil"
2026 atrac1_decoder_select="mdct sinewin"
2027 atrac3_decoder_select="mdct"
2028 atrac3p_decoder_select="mdct sinewin"
2029 avrn_decoder_select="exif"
2030 bink_decoder_select="blockdsp hpeldsp"
2031 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
2032 binkaudio_rdft_decoder_select="mdct rdft sinewin"
2033 cavs_decoder_select="blockdsp dsputil golomb h264chroma qpeldsp videodsp"
2034 cllc_decoder_select="bswapdsp"
2035 comfortnoise_encoder_select="lpc"
2036 cook_decoder_select="audiodsp mdct sinewin"
2037 cscd_decoder_select="lzo"
2038 cscd_decoder_suggest="zlib"
2039 dca_decoder_select="mdct"
2040 dirac_decoder_select="dsputil dwt golomb videodsp"
2041 dnxhd_decoder_select="blockdsp dsputil"
2042 dnxhd_encoder_select="aandcttables blockdsp dsputil mpegvideoenc"
2043 dvvideo_decoder_select="dsputil"
2044 dvvideo_encoder_select="dsputil"
2045 dxa_decoder_select="zlib"
2046 eac3_decoder_select="ac3_decoder"
2047 eac3_encoder_select="ac3_encoder"
2048 eamad_decoder_select="aandcttables blockdsp bswapdsp dsputil mpegvideo"
2049 eatgq_decoder_select="aandcttables"
2050 eatqi_decoder_select="aandcttables blockdsp bswapdsp dsputil mpeg1video_decoder"
2051 exr_decoder_select="zlib"
2052 ffv1_decoder_select="golomb rangecoder"
2053 ffv1_encoder_select="rangecoder"
2054 ffvhuff_decoder_select="huffyuv_decoder"
2055 ffvhuff_encoder_select="huffyuv_encoder"
2056 fic_decoder_select="golomb"
2057 flac_decoder_select="golomb"
2058 flac_encoder_select="bswapdsp golomb lpc"
2059 flashsv_decoder_select="zlib"
2060 flashsv_encoder_select="zlib"
2061 flashsv2_encoder_select="zlib"
2062 flashsv2_decoder_select="zlib"
2063 flv_decoder_select="h263_decoder"
2064 flv_encoder_select="h263_encoder"
2065 fourxm_decoder_select="blockdsp bswapdsp"
2066 fraps_decoder_select="bswapdsp huffman"
2067 g2m_decoder_select="blockdsp dsputil zlib"
2068 g729_decoder_select="audiodsp"
2069 h261_decoder_select="mpeg_er mpegvideo"
2070 h261_encoder_select="aandcttables mpegvideoenc"
2071 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2072 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2073 h263i_decoder_select="h263_decoder"
2074 h263p_encoder_select="h263_encoder"
2075 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2076 h264_decoder_suggest="error_resilience"
2077 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2078 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2079 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2080 iac_decoder_select="imc_decoder"
2081 imc_decoder_select="bswapdsp fft mdct sinewin"
2082 indeo3_decoder_select="hpeldsp"
2083 interplay_video_decoder_select="hpeldsp"
2084 jpegls_decoder_select="golomb mjpeg_decoder"
2085 jpegls_encoder_select="golomb"
2086 jv_decoder_select="blockdsp"
2087 lagarith_decoder_select="huffyuvdsp"
2088 ljpeg_encoder_select="aandcttables mpegvideoenc"
2089 loco_decoder_select="golomb"
2090 mdec_decoder_select="blockdsp dsputil mpegvideo"
2091 metasound_decoder_select="lsp mdct sinewin"
2092 mimic_decoder_select="blockdsp bswapdsp dsputil hpeldsp"
2093 mjpeg_decoder_select="blockdsp dsputil hpeldsp exif"
2094 mjpeg_encoder_select="aandcttables mpegvideoenc"
2095 mjpegb_decoder_select="mjpeg_decoder"
2096 mlp_decoder_select="mlp_parser"
2097 motionpixels_decoder_select="bswapdsp"
2098 mp1_decoder_select="mpegaudio"
2099 mp1float_decoder_select="mpegaudio"
2100 mp2_decoder_select="mpegaudio"
2101 mp2float_decoder_select="mpegaudio"
2102 mp3_decoder_select="mpegaudio"
2103 mp3adu_decoder_select="mpegaudio"
2104 mp3adufloat_decoder_select="mpegaudio"
2105 mp3float_decoder_select="mpegaudio"
2106 mp3on4_decoder_select="mpegaudio"
2107 mp3on4float_decoder_select="mpegaudio"
2108 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2109 mpc8_decoder_select="mpegaudiodsp"
2110 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2111 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2112 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2113 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2114 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2115 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2116 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2117 mpeg4_encoder_select="h263_encoder"
2118 msmpeg4v1_decoder_select="h263_decoder"
2119 msmpeg4v2_decoder_select="h263_decoder"
2120 msmpeg4v2_encoder_select="h263_encoder"
2121 msmpeg4v3_decoder_select="h263_decoder"
2122 msmpeg4v3_encoder_select="h263_encoder"
2123 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2124 mxpeg_decoder_select="mjpeg_decoder"
2125 nellymoser_decoder_select="mdct sinewin"
2126 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2127 nuv_decoder_select="dsputil lzo"
2128 on2avc_decoder_select="mdct"
2129 opus_decoder_deps="swresample"
2130 png_decoder_select="zlib"
2131 png_encoder_select="huffyuvencdsp zlib"
2132 prores_decoder_select="blockdsp dsputil"
2133 prores_encoder_select="dsputil"
2134 qcelp_decoder_select="lsp"
2135 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2136 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2137 ra_144_decoder_select="audiodsp"
2138 ralf_decoder_select="golomb"
2139 rawvideo_decoder_select="dsputil"
2140 rtjpeg_decoder_select="dsputil"
2141 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2142 rv10_encoder_select="h263_encoder"
2143 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2144 rv20_encoder_select="h263_encoder"
2145 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2146 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2147 shorten_decoder_select="golomb"
2148 sipr_decoder_select="lsp"
2149 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
2150 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
2151 sonic_decoder_select="golomb rangecoder"
2152 sonic_encoder_select="golomb rangecoder"
2153 sonic_ls_encoder_select="golomb rangecoder"
2154 sp5x_decoder_select="mjpeg_decoder"
2155 svq1_decoder_select="hpeldsp"
2156 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
2157 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2158 svq3_decoder_suggest="zlib"
2159 tak_decoder_select="audiodsp"
2160 theora_decoder_select="vp3_decoder"
2161 thp_decoder_select="mjpeg_decoder"
2162 tiff_decoder_suggest="zlib"
2163 tiff_encoder_suggest="zlib"
2164 truehd_decoder_select="mlp_parser"
2165 truemotion2_decoder_select="bswapdsp"
2166 truespeech_decoder_select="bswapdsp"
2167 tscc_decoder_select="zlib"
2168 twinvq_decoder_select="mdct lsp sinewin"
2169 utvideo_decoder_select="bswapdsp"
2170 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2171 vble_decoder_select="huffyuvdsp"
2172 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp"
2173 vc1image_decoder_select="vc1_decoder"
2174 vorbis_decoder_select="mdct"
2175 vorbis_encoder_select="mdct"
2176 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2177 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2178 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2179 vp6a_decoder_select="vp6_decoder"
2180 vp6f_decoder_select="vp6_decoder"
2181 vp7_decoder_select="h264pred videodsp"
2182 vp8_decoder_select="h264pred videodsp"
2183 vp9_decoder_select="videodsp vp9_parser"
2184 webp_decoder_select="vp8_decoder"
2185 wmalossless_decoder_select="llauddsp"
2186 wmapro_decoder_select="mdct sinewin"
2187 wmav1_decoder_select="mdct sinewin"
2188 wmav1_encoder_select="mdct sinewin"
2189 wmav2_decoder_select="mdct sinewin"
2190 wmav2_encoder_select="mdct sinewin"
2191 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2192 wmv1_decoder_select="h263_decoder"
2193 wmv1_encoder_select="h263_encoder"
2194 wmv2_decoder_select="blockdsp h263_decoder intrax8 videodsp"
2195 wmv2_encoder_select="h263_encoder"
2196 wmv3_decoder_select="vc1_decoder"
2197 wmv3image_decoder_select="wmv3_decoder"
2198 zerocodec_decoder_select="zlib"
2199 zlib_decoder_select="zlib"
2200 zlib_encoder_select="zlib"
2201 zmbv_decoder_select="zlib"
2202 zmbv_encoder_select="zlib"
2203
2204 # hardware accelerators
2205 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2206 dxva2_deps="dxva2api_h"
2207 vaapi_deps="va_va_h"
2208 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2209 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2210 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2211 xvmc_deps="X11_extensions_XvMClib_h"
2212
2213 h263_vaapi_hwaccel_deps="vaapi"
2214 h263_vaapi_hwaccel_select="h263_decoder"
2215 h263_vdpau_hwaccel_deps="vdpau"
2216 h263_vdpau_hwaccel_select="h263_decoder"
2217 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2218 h264_dxva2_hwaccel_deps="dxva2"
2219 h264_dxva2_hwaccel_select="h264_decoder"
2220 h264_vaapi_hwaccel_deps="vaapi"
2221 h264_vaapi_hwaccel_select="h264_decoder"
2222 h264_vda_decoder_deps="vda"
2223 h264_vda_decoder_select="h264_decoder"
2224 h264_vda_hwaccel_deps="vda"
2225 h264_vda_hwaccel_select="h264_decoder"
2226 h264_vda_old_hwaccel_deps="vda"
2227 h264_vda_old_hwaccel_select="h264_decoder"
2228 h264_vdpau_decoder_deps="vdpau"
2229 h264_vdpau_decoder_select="h264_decoder"
2230 h264_vdpau_hwaccel_deps="vdpau"
2231 h264_vdpau_hwaccel_select="h264_decoder"
2232 mpeg_vdpau_decoder_deps="vdpau"
2233 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2234 mpeg_xvmc_hwaccel_deps="xvmc"
2235 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2236 mpeg1_vdpau_decoder_deps="vdpau"
2237 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2238 mpeg1_vdpau_hwaccel_deps="vdpau"
2239 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2240 mpeg1_xvmc_hwaccel_deps="xvmc"
2241 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2242 mpeg2_crystalhd_decoder_select="crystalhd"
2243 mpeg2_dxva2_hwaccel_deps="dxva2"
2244 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2245 mpeg2_vaapi_hwaccel_deps="vaapi"
2246 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2247 mpeg2_vdpau_hwaccel_deps="vdpau"
2248 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2249 mpeg2_xvmc_hwaccel_deps="xvmc"
2250 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2251 mpeg4_crystalhd_decoder_select="crystalhd"
2252 mpeg4_vaapi_hwaccel_deps="vaapi"
2253 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2254 mpeg4_vdpau_decoder_deps="vdpau"
2255 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2256 mpeg4_vdpau_hwaccel_deps="vdpau"
2257 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2258 msmpeg4_crystalhd_decoder_select="crystalhd"
2259 vc1_crystalhd_decoder_select="crystalhd"
2260 vc1_dxva2_hwaccel_deps="dxva2"
2261 vc1_dxva2_hwaccel_select="vc1_decoder"
2262 vc1_vaapi_hwaccel_deps="vaapi"
2263 vc1_vaapi_hwaccel_select="vc1_decoder"
2264 vc1_vdpau_decoder_deps="vdpau"
2265 vc1_vdpau_decoder_select="vc1_decoder"
2266 vc1_vdpau_hwaccel_deps="vdpau"
2267 vc1_vdpau_hwaccel_select="vc1_decoder"
2268 wmv3_crystalhd_decoder_select="crystalhd"
2269 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2270 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2271 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2272 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2273
2274 # parsers
2275 h264_parser_select="h264_decoder"
2276 hevc_parser_select="hevc_decoder"
2277 mpegvideo_parser_select="mpegvideo"
2278 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2279 vc1_parser_select="mpegvideo vc1_decoder"
2280
2281 # external libraries
2282 libaacplus_encoder_deps="libaacplus"
2283 libcelt_decoder_deps="libcelt"
2284 libfaac_encoder_deps="libfaac"
2285 libfaac_encoder_select="audio_frame_queue"
2286 libfdk_aac_decoder_deps="libfdk_aac"
2287 libfdk_aac_encoder_deps="libfdk_aac"
2288 libfdk_aac_encoder_select="audio_frame_queue"
2289 libgme_demuxer_deps="libgme"
2290 libgsm_decoder_deps="libgsm"
2291 libgsm_encoder_deps="libgsm"
2292 libgsm_ms_decoder_deps="libgsm"
2293 libgsm_ms_encoder_deps="libgsm"
2294 libilbc_decoder_deps="libilbc"
2295 libilbc_encoder_deps="libilbc"
2296 libmodplug_demuxer_deps="libmodplug"
2297 libmp3lame_encoder_deps="libmp3lame"
2298 libmp3lame_encoder_select="audio_frame_queue"
2299 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2300 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2301 libopencore_amrnb_encoder_select="audio_frame_queue"
2302 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2303 libopenjpeg_decoder_deps="libopenjpeg"
2304 libopenjpeg_encoder_deps="libopenjpeg"
2305 libopus_decoder_deps="libopus"
2306 libopus_encoder_deps="libopus"
2307 libopus_encoder_select="audio_frame_queue"
2308 libquvi_demuxer_deps="libquvi"
2309 libschroedinger_decoder_deps="libschroedinger"
2310 libschroedinger_encoder_deps="libschroedinger"
2311 libshine_encoder_deps="libshine"
2312 libshine_encoder_select="audio_frame_queue"
2313 libspeex_decoder_deps="libspeex"
2314 libspeex_encoder_deps="libspeex"
2315 libspeex_encoder_select="audio_frame_queue"
2316 libstagefright_h264_decoder_deps="libstagefright_h264"
2317 libtheora_encoder_deps="libtheora"
2318 libtwolame_encoder_deps="libtwolame"
2319 libvo_aacenc_encoder_deps="libvo_aacenc"
2320 libvo_aacenc_encoder_select="audio_frame_queue"
2321 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2322 libvorbis_decoder_deps="libvorbis"
2323 libvorbis_encoder_deps="libvorbis"
2324 libvorbis_encoder_select="audio_frame_queue"
2325 libvpx_vp8_decoder_deps="libvpx"
2326 libvpx_vp8_encoder_deps="libvpx"
2327 libvpx_vp9_decoder_deps="libvpx"
2328 libvpx_vp9_encoder_deps="libvpx"
2329 libwavpack_encoder_deps="libwavpack"
2330 libwebp_encoder_deps="libwebp"
2331 libx264_encoder_deps="libx264"
2332 libx264rgb_encoder_deps="libx264"
2333 libx265_encoder_deps="libx265"
2334 libxavs_encoder_deps="libxavs"
2335 libxvid_encoder_deps="libxvid"
2336 libutvideo_decoder_deps="libutvideo"
2337 libutvideo_encoder_deps="libutvideo"
2338 libzvbi_teletext_decoder_deps="libzvbi"
2339
2340 # demuxers / muxers
2341 ac3_demuxer_select="ac3_parser"
2342 asf_demuxer_select="riffdec"
2343 asf_muxer_select="riffenc"
2344 asf_stream_muxer_select="asf_muxer"
2345 avi_demuxer_select="riffdec exif"
2346 avi_muxer_select="riffenc"
2347 avisynth_demuxer_deps="avisynth"
2348 avisynth_demuxer_select="riffdec"
2349 caf_demuxer_select="riffdec"
2350 dirac_demuxer_select="dirac_parser"
2351 dts_demuxer_select="dca_parser"
2352 dtshd_demuxer_select="dca_parser"
2353 dxa_demuxer_select="riffdec"
2354 eac3_demuxer_select="ac3_parser"
2355 f4v_muxer_select="mov_muxer"
2356 flac_demuxer_select="flac_parser"
2357 hds_muxer_select="flv_muxer"
2358 hls_muxer_select="mpegts_muxer"
2359 image2_alias_pix_demuxer_select="image2_demuxer"
2360 image2_brender_pix_demuxer_select="image2_demuxer"
2361 ipod_muxer_select="mov_muxer"
2362 ismv_muxer_select="mov_muxer"
2363 libnut_demuxer_deps="libnut"
2364 libnut_muxer_deps="libnut"
2365 matroska_audio_muxer_select="matroska_muxer"
2366 matroska_demuxer_select="riffdec"
2367 matroska_demuxer_suggest="bzlib lzo zlib"
2368 matroska_muxer_select="riffenc"
2369 mmf_muxer_select="riffenc"
2370 mov_demuxer_select="riffdec"
2371 mov_demuxer_suggest="zlib"
2372 mov_muxer_select="riffenc rtpenc_chain"
2373 mp3_demuxer_select="mpegaudio_parser"
2374 mp4_muxer_select="mov_muxer"
2375 mpegts_muxer_select="adts_muxer latm_muxer"
2376 mpegtsraw_demuxer_select="mpegts_demuxer"
2377 mxf_d10_muxer_select="mxf_muxer"
2378 nut_muxer_select="riffenc"
2379 nuv_demuxer_select="riffdec"
2380 ogg_demuxer_select="golomb"
2381 psp_muxer_select="mov_muxer"
2382 rtp_demuxer_select="sdp_demuxer"
2383 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2384 rtsp_demuxer_select="http_protocol rtpdec"
2385 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2386 sap_demuxer_select="sdp_demuxer"
2387 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2388 sdp_demuxer_select="rtpdec"
2389 smoothstreaming_muxer_select="ismv_muxer"
2390 spdif_muxer_select="aac_parser"
2391 tak_demuxer_select="tak_parser"
2392 tg2_muxer_select="mov_muxer"
2393 tgp_muxer_select="mov_muxer"
2394 vobsub_demuxer_select="mpegps_demuxer"
2395 w64_demuxer_select="wav_demuxer"
2396 w64_muxer_select="wav_muxer"
2397 wav_demuxer_select="riffdec"
2398 wav_muxer_select="riffenc"
2399 webm_muxer_select="riffenc"
2400 wtv_demuxer_select="riffdec"
2401 wtv_muxer_select="riffenc"
2402 xmv_demuxer_select="riffdec"
2403 xwma_demuxer_select="riffdec"
2404
2405 # indevs / outdevs
2406 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2407 alsa_outdev_deps="alsa_asoundlib_h"
2408 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2409 avfoundation_indev_select="avfoundation"
2410 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2411 caca_outdev_deps="libcaca"
2412 decklink_outdev_deps="decklink pthreads"
2413 decklink_outdev_extralibs="-lstdc++"
2414 dshow_indev_deps="IBaseFilter"
2415 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2416 dv1394_indev_deps="dv1394"
2417 dv1394_indev_select="dv_demuxer"
2418 fbdev_indev_deps="linux_fb_h"
2419 fbdev_outdev_deps="linux_fb_h"
2420 gdigrab_indev_deps="CreateDIBSection"
2421 gdigrab_indev_extralibs="-lgdi32"
2422 gdigrab_indev_select="bmp_decoder"
2423 iec61883_indev_deps="libiec61883"
2424 jack_indev_deps="jack_jack_h sem_timedwait"
2425 lavfi_indev_deps="avfilter"
2426 libcdio_indev_deps="libcdio"
2427 libdc1394_indev_deps="libdc1394"
2428 libv4l2_indev_deps="libv4l2"
2429 openal_indev_deps="openal"
2430 opengl_outdev_deps="opengl"
2431 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2432 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2433 pulse_indev_deps="libpulse"
2434 pulse_outdev_deps="libpulse"
2435 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2436 qtkit_indev_select="qtkit"
2437 sdl_outdev_deps="sdl"
2438 sndio_indev_deps="sndio_h"
2439 sndio_outdev_deps="sndio_h"
2440 v4l_indev_deps="linux_videodev_h"
2441 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2442 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2443 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2444 vfwcap_indev_extralibs="-lavicap32"
2445 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2446 xv_outdev_extralibs="-lXv -lX11 -lXext"
2447 x11grab_indev_deps="x11grab"
2448
2449 # protocols
2450 bluray_protocol_deps="libbluray"
2451 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2452 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2453 ffrtmpcrypt_protocol_select="tcp_protocol"
2454 ffrtmphttp_protocol_deps="!librtmp_protocol"
2455 ffrtmphttp_protocol_select="http_protocol"
2456 ftp_protocol_select="tcp_protocol"
2457 gopher_protocol_select="network"
2458 http_protocol_select="tcp_protocol"
2459 httpproxy_protocol_select="tcp_protocol"
2460 https_protocol_select="tls_protocol"
2461 librtmp_protocol_deps="librtmp"
2462 librtmpe_protocol_deps="librtmp"
2463 librtmps_protocol_deps="librtmp"
2464 librtmpt_protocol_deps="librtmp"
2465 librtmpte_protocol_deps="librtmp"
2466 libssh_protocol_deps="libssh"
2467 mmsh_protocol_select="http_protocol"
2468 mmst_protocol_select="network"
2469 rtmp_protocol_deps="!librtmp_protocol"
2470 rtmp_protocol_select="tcp_protocol"
2471 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2472 rtmps_protocol_deps="!librtmp_protocol"
2473 rtmps_protocol_select="tls_protocol"
2474 rtmpt_protocol_select="ffrtmphttp_protocol"
2475 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2476 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2477 rtp_protocol_select="udp_protocol"
2478 sctp_protocol_deps="struct_sctp_event_subscribe"
2479 sctp_protocol_select="network"
2480 srtp_protocol_select="rtp_protocol"
2481 tcp_protocol_select="network"
2482 tls_protocol_deps_any="openssl gnutls"
2483 tls_protocol_select="tcp_protocol"
2484 udp_protocol_select="network"
2485 unix_protocol_deps="sys_un_h"
2486 unix_protocol_select="network"
2487
2488 # filters
2489 aconvert_filter_deps="swresample"
2490 amovie_filter_deps="avcodec avformat"
2491 aresample_filter_deps="swresample"
2492 ass_filter_deps="libass"
2493 asyncts_filter_deps="avresample"
2494 atempo_filter_deps="avcodec"
2495 atempo_filter_select="rdft"
2496 azmq_filter_deps="libzmq"
2497 blackframe_filter_deps="gpl"
2498 boxblur_filter_deps="gpl"
2499 bs2b_filter_deps="libbs2b"
2500 colormatrix_filter_deps="gpl"
2501 cropdetect_filter_deps="gpl"
2502 dctdnoiz_filter_deps="avcodec"
2503 dctdnoiz_filter_select="dct"
2504 delogo_filter_deps="gpl"
2505 deshake_filter_deps="avcodec"
2506 deshake_filter_select="dsputil"
2507 drawtext_filter_deps="libfreetype"
2508 ebur128_filter_deps="gpl"
2509 flite_filter_deps="libflite"
2510 frei0r_filter_deps="frei0r dlopen"
2511 frei0r_filter_extralibs='$ldl'
2512 frei0r_src_filter_deps="frei0r dlopen"
2513 frei0r_src_filter_extralibs='$ldl'
2514 geq_filter_deps="gpl"
2515 histeq_filter_deps="gpl"
2516 hqdn3d_filter_deps="gpl"
2517 interlace_filter_deps="gpl"
2518 kerndeint_filter_deps="gpl"
2519 ladspa_filter_deps="ladspa dlopen"
2520 ladspa_filter_extralibs='$ldl'
2521 mcdeint_filter_deps="avcodec gpl"
2522 movie_filter_deps="avcodec avformat"
2523 mp_filter_deps="gpl avcodec swscale inline_asm"
2524 mpdecimate_filter_deps="gpl avcodec"
2525 mptestsrc_filter_deps="gpl"
2526 negate_filter_deps="lut_filter"
2527 perspective_filter_deps="gpl"
2528 ocv_filter_deps="libopencv"
2529 owdenoise_filter_deps="gpl"
2530 pan_filter_deps="swresample"
2531 phase_filter_deps="gpl"
2532 pp_filter_deps="gpl postproc"
2533 pullup_filter_deps="gpl"
2534 removelogo_filter_deps="avcodec avformat swscale"
2535 resample_filter_deps="avresample"
2536 sab_filter_deps="gpl swscale"
2537 scale_filter_deps="swscale"
2538 smartblur_filter_deps="gpl swscale"
2539 showspectrum_filter_deps="avcodec"
2540 showspectrum_filter_select="rdft"
2541 spp_filter_deps="gpl avcodec"
2542 spp_filter_select="fft"
2543 stereo3d_filter_deps="gpl"
2544 subtitles_filter_deps="avformat avcodec libass"
2545 super2xsai_filter_deps="gpl"
2546 tinterlace_filter_deps="gpl"
2547 vidstabdetect_filter_deps="libvidstab"
2548 vidstabtransform_filter_deps="libvidstab"
2549 pixfmts_super2xsai_test_deps="super2xsai_filter"
2550 tinterlace_merge_test_deps="tinterlace_filter"
2551 tinterlace_pad_test_deps="tinterlace_filter"
2552 zmq_filter_deps="libzmq"
2553 zoompan_filter_deps="swscale"
2554
2555 # examples
2556 avio_reading="avformat avcodec avutil"
2557 avcodec_example_deps="avcodec avutil"
2558 demuxing_decoding_example_deps="avcodec avformat avutil"
2559 filter_audio_example_deps="avfilter avutil"
2560 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2561 filtering_video_example_deps="avfilter avcodec avformat avutil"
2562 metadata_example_deps="avformat avutil"
2563 muxing_example_deps="avcodec avformat avutil swscale"
2564 remuxing_example_deps="avcodec avformat avutil"
2565 resampling_audio_example_deps="avutil swresample"
2566 scaling_video_example_deps="avutil swscale"
2567 transcode_aac_example_deps="avcodec avformat swresample"
2568 transcoding_example_deps="avfilter avcodec avformat avutil"
2569
2570 # libraries, in linking order
2571 avcodec_deps="avutil"
2572 avdevice_deps="avformat avcodec avutil"
2573 avfilter_deps="avutil"
2574 avformat_deps="avcodec avutil"
2575 avresample_deps="avutil"
2576 postproc_deps="avutil gpl"
2577 swresample_deps="avutil"
2578 swscale_deps="avutil"
2579
2580 # programs
2581 ffmpeg_deps="avcodec avfilter avformat swresample"
2582 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2583                null_filter
2584                setpts_filter trim_filter"
2585 ffplay_deps="avcodec avformat swscale swresample sdl"
2586 ffplay_libs='$sdl_libs'
2587 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2588 ffprobe_deps="avcodec avformat"
2589 ffserver_deps="avformat fork sarestart"
2590 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2591
2592 # documentation
2593 podpages_deps="perl"
2594 manpages_deps="perl pod2man"
2595 htmlpages_deps="perl texi2html"
2596 txtpages_deps="perl makeinfo"
2597 doc_deps_any="manpages htmlpages podpages txtpages"
2598
2599 # default parameters
2600
2601 logfile="config.log"
2602
2603 # installation paths
2604 prefix_default="/usr/local"
2605 bindir_default='${prefix}/bin'
2606 datadir_default='${prefix}/share/ffmpeg'
2607 docdir_default='${prefix}/share/doc/ffmpeg'
2608 incdir_default='${prefix}/include'
2609 libdir_default='${prefix}/lib'
2610 mandir_default='${prefix}/share/man'
2611 shlibdir_default="$libdir_default"
2612
2613 # toolchain
2614 ar_default="ar"
2615 cc_default="gcc"
2616 cxx_default="g++"
2617 host_cc_default="gcc"
2618 cp_f="cp -f"
2619 install="install"
2620 ln_s="ln -s -f"
2621 nm_default="nm -g"
2622 objformat="elf"
2623 pkg_config_default=pkg-config
2624 ranlib_default="ranlib"
2625 strip_default="strip"
2626 yasmexe_default="yasm"
2627 windres_default="windres"
2628
2629 nogas=":"
2630
2631 # OS
2632 target_os_default=$(tolower $(uname -s))
2633 host_os=$target_os_default
2634
2635 # machine
2636 if test "$target_os_default" = aix; then
2637     arch_default=$(uname -p)
2638     strip_default="strip -X32_64"
2639 else
2640     arch_default=$(uname -m)
2641 fi
2642 cpu="generic"
2643
2644 # configurable options
2645 enable $PROGRAM_LIST
2646 enable $DOCUMENT_LIST
2647 enable $EXAMPLE_LIST
2648 enable $(filter_out avresample $LIBRARY_LIST)
2649 enable stripping
2650
2651 enable asm
2652 enable debug
2653 enable doc
2654 enable optimizations
2655 enable runtime_cpudetect
2656 enable safe_bitstream_reader
2657 enable static
2658 enable swscale_alpha
2659
2660 sws_max_filter_size_default=256
2661 set_default sws_max_filter_size
2662
2663 # Enable hwaccels by default.
2664 enable dxva2 vaapi vda vdpau xvmc
2665 enable xlib
2666
2667 # build settings
2668 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2669 LIBPREF="lib"
2670 LIBSUF=".a"
2671 FULLNAME='$(NAME)$(BUILDSUF)'
2672 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2673 SLIBPREF="lib"
2674 SLIBSUF=".so"
2675 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2676 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2677 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2678 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2679 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2680 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2681
2682 asflags_filter=echo
2683 cflags_filter=echo
2684 ldflags_filter=echo
2685
2686 AS_C='-c'
2687 AS_O='-o $@'
2688 CC_C='-c'
2689 CC_E='-E -o $@'
2690 CC_O='-o $@'
2691 CXX_C='-c'
2692 CXX_O='-o $@'
2693 LD_O='-o $@'
2694 LD_LIB='-l%'
2695 LD_PATH='-L'
2696 HOSTCC_C='-c'
2697 HOSTCC_E='-E -o $@'
2698 HOSTCC_O='-o $@'
2699 HOSTLD_O='-o $@'
2700
2701 host_libs='-lm'
2702 host_cflags_filter=echo
2703 host_ldflags_filter=echo
2704
2705 target_path='$(CURDIR)'
2706
2707 # since the object filename is not given with the -MM flag, the compiler
2708 # is only able to print the basename, and we must add the path ourselves
2709 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2710 DEPFLAGS='-MM'
2711
2712 # find source path
2713 if test -f configure; then
2714     source_path=.
2715 else
2716     source_path=$(cd $(dirname "$0"); pwd)
2717     echo "$source_path" | grep -q '[[:blank:]]' &&
2718         die "Out of tree builds are impossible with whitespace in source path."
2719     test -e "$source_path/config.h" &&
2720         die "Out of tree builds are impossible with config.h in source dir."
2721 fi
2722
2723 for v in "$@"; do
2724     r=${v#*=}
2725     l=${v%"$r"}
2726     r=$(sh_quote "$r")
2727     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2728 done
2729
2730 find_things(){
2731     thing=$1
2732     pattern=$2
2733     file=$source_path/$3
2734     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2735 }
2736
2737 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2738 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2739 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2740 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2741 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2742 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2743 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2744 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2745 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2746 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2747 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2748
2749 ALL_COMPONENTS="
2750     $BSF_LIST
2751     $DECODER_LIST
2752     $DEMUXER_LIST
2753     $ENCODER_LIST
2754     $FILTER_LIST
2755     $HWACCEL_LIST
2756     $INDEV_LIST
2757     $MUXER_LIST
2758     $OUTDEV_LIST
2759     $PARSER_LIST
2760     $PROTOCOL_LIST
2761 "
2762
2763 for n in $COMPONENT_LIST; do
2764     v=$(toupper ${n%s})_LIST
2765     eval enable \$$v
2766     eval ${n}_if_any="\$$v"
2767 done
2768
2769 enable $ARCH_EXT_LIST
2770
2771 die_unknown(){
2772     echo "Unknown option \"$1\"."
2773     echo "See $0 --help for available options."
2774     exit 1
2775 }
2776
2777 print_3_columns() {
2778     cat | tr ' ' '\n' | sort | pr -r -3 -t
2779 }
2780
2781 show_list() {
2782     suffix=_$1
2783     shift
2784     echo $* | sed s/$suffix//g | print_3_columns
2785     exit 0
2786 }
2787
2788 rand_list(){
2789     IFS=', '
2790     set -- $*
2791     unset IFS
2792     for thing; do
2793         comp=${thing%:*}
2794         prob=${thing#$comp}
2795         prob=${prob#:}
2796         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2797         echo "prob ${prob:-0.5}"
2798         printf '%s\n' $comp
2799     done
2800 }
2801
2802 do_random(){
2803     action=$1
2804     shift
2805     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2806     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2807 }
2808
2809 for opt do
2810     optval="${opt#*=}"
2811     case "$opt" in
2812         --extra-ldflags=*)
2813             add_ldflags $optval
2814         ;;
2815         --extra-libs=*)
2816             add_extralibs $optval
2817         ;;
2818         --disable-devices)
2819             disable $INDEV_LIST $OUTDEV_LIST
2820         ;;
2821         --enable-debug=*)
2822             debuglevel="$optval"
2823         ;;
2824         --disable-programs)
2825             disable $PROGRAM_LIST
2826         ;;
2827         --disable-everything)
2828             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2829         ;;
2830         --disable-all)
2831             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2832             disable $LIBRARY_LIST $PROGRAM_LIST doc
2833         ;;
2834         --enable-random|--disable-random)
2835             action=${opt%%-random}
2836             do_random ${action#--} $COMPONENT_LIST
2837         ;;
2838         --enable-random=*|--disable-random=*)
2839             action=${opt%%-random=*}
2840             do_random ${action#--} $optval
2841         ;;
2842         --enable-*=*|--disable-*=*)
2843             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2844             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2845             eval list=\$$(toupper $thing)_LIST
2846             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2847             list=$(filter "$name" $list)
2848             [ "$list" = "" ] && warn "Option $opt did not match anything"
2849             $action $list
2850         ;;
2851         --enable-?*|--disable-?*)
2852             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2853             if is_in $option $COMPONENT_LIST; then
2854                 test $action = disable && action=unset
2855                 eval $action \$$(toupper ${option%s})_LIST
2856             elif is_in $option $CMDLINE_SELECT; then
2857                 $action $option
2858             else
2859                 die_unknown $opt
2860             fi
2861         ;;
2862         --list-*)
2863             NAME="${opt#--list-}"
2864             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2865             NAME=${NAME%s}
2866             eval show_list $NAME \$$(toupper $NAME)_LIST
2867         ;;
2868         --help|-h) show_help
2869         ;;
2870         --fatal-warnings) enable fatal_warnings
2871         ;;
2872         *)
2873             optname="${opt%%=*}"
2874             optname="${optname#--}"
2875             optname=$(echo "$optname" | sed 's/-/_/g')
2876             if is_in $optname $CMDLINE_SET; then
2877                 eval $optname='$optval'
2878             elif is_in $optname $CMDLINE_APPEND; then
2879                 append $optname "$optval"
2880             else
2881                 die_unknown $opt
2882             fi
2883         ;;
2884     esac
2885 done
2886
2887 disabled logging && logfile=/dev/null
2888
2889 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2890 set >> $logfile
2891
2892 test -n "$cross_prefix" && enable cross_compile
2893
2894 if enabled cross_compile; then
2895     test -n "$arch" && test -n "$target_os" ||
2896         die "Must specify target arch and OS when cross-compiling"
2897 fi
2898
2899 ar_default="${cross_prefix}${ar_default}"
2900 cc_default="${cross_prefix}${cc_default}"
2901 cxx_default="${cross_prefix}${cxx_default}"
2902 nm_default="${cross_prefix}${nm_default}"
2903 pkg_config_default="${cross_prefix}${pkg_config_default}"
2904 ranlib_default="${cross_prefix}${ranlib_default}"
2905 strip_default="${cross_prefix}${strip_default}"
2906 windres_default="${cross_prefix}${windres_default}"
2907
2908 sysinclude_default="${sysroot}/usr/include"
2909
2910 test -n "$valgrind" && toolchain="valgrind-memcheck"
2911
2912 case "$toolchain" in
2913     clang-asan)
2914         cc_default="clang"
2915         add_cflags  -fsanitize=address
2916         add_ldflags -fsanitize=address
2917     ;;
2918     clang-tsan)
2919         cc_default="clang"
2920         add_cflags  -fsanitize=thread -pie
2921         add_ldflags -fsanitize=thread -pie
2922     ;;
2923     clang-usan)
2924         cc_default="clang"
2925         add_cflags  -fsanitize=undefined
2926         add_ldflags -fsanitize=undefined
2927     ;;
2928     gcc-asan)
2929         cc_default="gcc"
2930         add_cflags  -fsanitize=address
2931         add_ldflags -fsanitize=address
2932     ;;
2933     gcc-tsan)
2934         cc_default="gcc"
2935         add_cflags  -fsanitize=thread -pie -fPIC
2936         add_ldflags -fsanitize=thread -pie -fPIC
2937     ;;
2938     gcc-usan)
2939         cc_default="gcc"
2940         add_cflags  -fsanitize=undefined
2941         add_ldflags -fsanitize=undefined
2942     ;;
2943     valgrind-massif)
2944         target_exec_default=${valgrind:-"valgrind"}
2945         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"
2946     ;;
2947     valgrind-memcheck)
2948         target_exec_default=${valgrind:-"valgrind"}
2949         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2950     ;;
2951     msvc)
2952         # Check whether the current MSVC version needs the C99 converter.
2953         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2954         # support enough of C99 to build ffmpeg. Default to the new
2955         # behaviour if the regexp was unable to match anything, since this
2956         # successfully parses the version number of existing supported
2957         # versions that require the converter (MSVC 2010 and 2012).
2958         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2959         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2960             cc_default="cl"
2961         else
2962             cc_default="c99wrap cl"
2963         fi
2964         ld_default="link"
2965         nm_default="dumpbin -symbols"
2966         ar_default="lib"
2967         target_os_default="win32"
2968         # Use a relative path for TMPDIR. This makes sure all the
2969         # ffconf temp files are written with a relative path, avoiding
2970         # issues with msys/win32 path conversion for MSVC parameters
2971         # such as -Fo<file> or -out:<file>.
2972         TMPDIR=.
2973     ;;
2974     icl)
2975         cc_default="icl"
2976         ld_default="xilink"
2977         nm_default="dumpbin -symbols"
2978         ar_default="xilib"
2979         target_os_default="win32"
2980         TMPDIR=.
2981     ;;
2982     gcov)
2983         add_cflags  -fprofile-arcs -ftest-coverage
2984         add_ldflags -fprofile-arcs -ftest-coverage
2985     ;;
2986     hardened)
2987         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2988         add_ldflags -Wl,-z,relro -Wl,-z,now
2989     ;;
2990     ?*)
2991         die "Unknown toolchain $toolchain"
2992     ;;
2993 esac
2994
2995 set_default arch cc cxx pkg_config ranlib strip sysinclude target_exec target_os yasmexe
2996 enabled cross_compile || host_cc_default=$cc
2997 set_default host_cc
2998
2999 if ! $pkg_config --version >/dev/null 2>&1; then
3000     warn "$pkg_config not found, library detection may fail."
3001     pkg_config=false
3002 fi
3003
3004 exesuf() {
3005     case $1 in
3006         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3007     esac
3008 }
3009
3010 EXESUF=$(exesuf $target_os)
3011 HOSTEXESUF=$(exesuf $host_os)
3012
3013 # set temporary file name
3014 : ${TMPDIR:=$TEMPDIR}
3015 : ${TMPDIR:=$TMP}
3016 : ${TMPDIR:=/tmp}
3017
3018 if [ -n "$tempprefix" ] ; then
3019     mktemp(){
3020         echo $tempprefix.${HOSTNAME}.${UID}
3021     }
3022 elif ! check_cmd mktemp -u XXXXXX; then
3023     # simple replacement for missing mktemp
3024     # NOT SAFE FOR GENERAL USE
3025     mktemp(){
3026         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3027     }
3028 fi
3029
3030 tmpfile(){
3031     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3032         (set -C; exec > $tmp) 2>/dev/null ||
3033         die "Unable to create temporary file in $TMPDIR."
3034     append TMPFILES $tmp
3035     eval $1=$tmp
3036 }
3037
3038 trap 'rm -f -- $TMPFILES' EXIT
3039
3040 tmpfile TMPASM .asm
3041 tmpfile TMPC   .c
3042 tmpfile TMPCPP .cpp
3043 tmpfile TMPE   $EXESUF
3044 tmpfile TMPH   .h
3045 tmpfile TMPM   .m
3046 tmpfile TMPO   .o
3047 tmpfile TMPS   .S
3048 tmpfile TMPSH  .sh
3049 tmpfile TMPV   .ver
3050
3051 unset -f mktemp
3052
3053 chmod +x $TMPE
3054
3055 # make sure we can execute files in $TMPDIR
3056 cat > $TMPSH 2>> $logfile <<EOF
3057 #! /bin/sh
3058 EOF
3059 chmod +x $TMPSH >> $logfile 2>&1
3060 if ! $TMPSH >> $logfile 2>&1; then
3061     cat <<EOF
3062 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3063 variable to another directory and make sure that it is not mounted noexec.
3064 EOF
3065     die "Sanity test failed."
3066 fi
3067
3068 ccc_flags(){
3069     for flag; do
3070         case $flag in
3071             -std=c99)           echo -c99                       ;;
3072             -mcpu=*)            echo -arch ${flag#*=}           ;;
3073             -mieee)             echo -ieee                      ;;
3074             -O*|-fast)          echo $flag                      ;;
3075             -fno-math-errno)    echo -assume nomath_errno       ;;
3076             -g)                 echo -g3                        ;;
3077             -Wall)              echo -msg_enable level2         ;;
3078             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3079             -Wl,*)              echo $flag                      ;;
3080             -f*|-W*)                                            ;;
3081             *)                  echo $flag                      ;;
3082         esac
3083    done
3084 }
3085
3086 cparser_flags(){
3087     for flag; do
3088         case $flag in
3089             -Wno-switch)             echo -Wno-switch-enum ;;
3090             -Wno-format-zero-length) ;;
3091             -Wdisabled-optimization) ;;
3092             -Wno-pointer-sign)       echo -Wno-other ;;
3093             *)                       echo $flag ;;
3094         esac
3095     done
3096 }
3097
3098 msvc_common_flags(){
3099     for flag; do
3100         case $flag in
3101             # In addition to specifying certain flags under the compiler
3102             # specific filters, they must be specified here as well or else the
3103             # generic catch all at the bottom will print the original flag.
3104             -Wall)                ;;
3105             -std=c99)             ;;
3106             # Common flags
3107             -fomit-frame-pointer) ;;
3108             -g)                   echo -Z7 ;;
3109             -fno-math-errno)      ;;
3110             -fno-common)          ;;
3111             -fno-signed-zeros)    ;;
3112             -fPIC)                ;;
3113             -mthumb)              ;;
3114             -march=*)             ;;
3115             -lz)                  echo zlib.lib ;;
3116             -lavifil32)           echo vfw32.lib ;;
3117             -lavicap32)           echo vfw32.lib user32.lib ;;
3118             -l*)                  echo ${flag#-l}.lib ;;
3119             *)                    echo $flag ;;
3120         esac
3121     done
3122 }
3123
3124 msvc_flags(){
3125     msvc_common_flags "$@"
3126     for flag; do
3127         case $flag in
3128             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3129                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3130                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3131                                        -wd4554 \
3132                                        -wd4273 ;;
3133         esac
3134     done
3135 }
3136
3137 icl_flags(){
3138     msvc_common_flags "$@"
3139     for flag; do
3140         case $flag in
3141             # Despite what Intel's documentation says -Wall, which is supported
3142             # on Windows, does enable remarks so disable them here.
3143             -Wall)                echo $flag -Qdiag-disable:remark ;;
3144             -std=c99)             echo -Qstd=c99 ;;
3145             -flto)                echo -ipo ;;
3146         esac
3147     done
3148 }
3149
3150 icc_flags(){
3151     for flag; do
3152         case $flag in
3153             -flto)                echo -ipo ;;
3154             *)                    echo $flag ;;
3155         esac
3156     done
3157 }
3158
3159 pgi_flags(){
3160     for flag; do
3161         case $flag in
3162             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3163             -fomit-frame-pointer) echo -Mnoframe ;;
3164             -g)                   echo -gopt ;;
3165             *)                    echo $flag ;;
3166         esac
3167     done
3168 }
3169
3170 suncc_flags(){
3171     for flag; do
3172         case $flag in
3173             -march=*|-mcpu=*)
3174                 case "${flag#*=}" in
3175                     native)                   echo -xtarget=native       ;;
3176                     v9|niagara)               echo -xarch=sparc          ;;
3177                     ultrasparc)               echo -xarch=sparcvis       ;;
3178                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3179                     i586|pentium)             echo -xchip=pentium        ;;
3180                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3181                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3182                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3183                     pentium4*)          echo -xtarget=pentium4           ;;
3184                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3185                     *-sse3)             echo -xarch=sse3                 ;;
3186                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3187                     bonnell)                   echo -xarch=ssse3         ;;
3188                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3189                     westmere)                  echo -xtarget=westmere    ;;
3190                     silvermont)                echo -xarch=sse4_2        ;;
3191                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3192                     core-avx*|ivybridge|haswell|broadwell)
3193                                                echo -xarch=avx           ;;
3194                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3195                     btver1)                    echo -xarch=amdsse4a      ;;
3196                     btver2|bdver*)             echo -xarch=avx           ;;
3197                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3198                     k8|opteron|athlon64|athlon-fx)
3199                                                echo -xarch=sse2a         ;;
3200                     athlon*)                   echo -xarch=pentium_proa  ;;
3201                 esac
3202                 ;;
3203             -std=c99)             echo -xc99              ;;
3204             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3205             -fPIC)                echo -KPIC -xcode=pic32 ;;
3206             -W*,*)                echo $flag              ;;
3207             -f*-*|-W*|-mimpure-text)                      ;;
3208             -shared)              echo -G                 ;;
3209             *)                    echo $flag              ;;
3210         esac
3211     done
3212 }
3213
3214 tms470_flags(){
3215     for flag; do
3216         case $flag in
3217             -march=*|-mcpu=*)
3218                 case "${flag#*=}" in
3219                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3220                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3221                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3222                     armv6*|arm11*)          echo -mv=6   ;;
3223                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3224                                             echo -mv=5e  ;;
3225                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3226                 esac
3227                 ;;
3228             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3229             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3230             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3231             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3232             -msoft-float)   echo --float_support=vfplib       ;;
3233             -O[0-3]|-mf=*)  echo $flag                        ;;
3234             -g)             echo -g -mn                       ;;
3235             -pds=*)         echo $flag                        ;;
3236             -D*|-I*)        echo $flag                        ;;
3237             --gcc|--abi=*)  echo $flag                        ;;
3238             -me)            echo $flag                        ;;
3239         esac
3240     done
3241 }
3242
3243 probe_cc(){
3244     pfx=$1
3245     _cc=$2
3246
3247     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3248     unset _ld_o _ldflags _ld_lib _ld_path
3249     unset _depflags _DEPCMD _DEPFLAGS
3250     _flags_filter=echo
3251
3252     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3253         true # no-op to avoid reading stdin in following checks
3254     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3255         _type=llvm_gcc
3256         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3257         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3258         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3259         _cflags_speed='-O3'
3260         _cflags_size='-Os'
3261     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3262         _type=gcc
3263         gcc_version=$($_cc --version | head -n1)
3264         gcc_basever=$($_cc -dumpversion)
3265         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3266         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3267         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3268         if ! $_cc -dumpversion | grep -q '^2\.'; then
3269             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3270         fi
3271         _cflags_speed='-O3'
3272         _cflags_size='-Os'
3273     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3274         _type=icc
3275         _ident=$($_cc --version | head -n1)
3276         _depflags='-MMD'
3277         _cflags_speed='-O3'
3278         _cflags_size='-Os'
3279         _cflags_noopt='-O1'
3280         _flags_filter=icc_flags
3281     elif $_cc -v 2>&1 | grep -q xlc; then
3282         _type=xlc
3283         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3284         _cflags_speed='-O5'
3285         _cflags_size='-O5 -qcompact'
3286     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3287         _type=ccc
3288         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3289         _DEPFLAGS='-M'
3290         _cflags_speed='-fast'
3291         _cflags_size='-O1'
3292         _flags_filter=ccc_flags
3293     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3294         test -d "$sysroot" || die "No valid sysroot specified."
3295         _type=armcc
3296         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
3297         armcc_conf="$PWD/armcc.conf"
3298         $_cc --arm_linux_configure                 \
3299              --arm_linux_config_file="$armcc_conf" \
3300              --configure_sysroot="$sysroot"        \
3301              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3302              die "Error creating armcc configuration file."
3303         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3304         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3305         as_default="${cross_prefix}gcc"
3306         _depflags='-MMD'
3307         _cflags_speed='-O3'
3308         _cflags_size='-Os'
3309     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3310         _type=tms470
3311         _ident=$($_cc -version | head -n1 | tr -s ' ')
3312         _flags='--gcc --abi=eabi -me'
3313         _cc_e='-ppl -fe=$@'
3314         _cc_o='-fe=$@'
3315         _depflags='-ppa -ppd=$(@:.o=.d)'
3316         _cflags_speed='-O3 -mf=5'
3317         _cflags_size='-O3 -mf=2'
3318         _flags_filter=tms470_flags
3319     elif $_cc -v 2>&1 | grep -q clang; then
3320         _type=clang
3321         _ident=$($_cc --version | head -n1)
3322         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3323         _cflags_speed='-O3'
3324         _cflags_size='-Os'
3325     elif $_cc -V 2>&1 | grep -q Sun; then
3326         _type=suncc
3327         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3328         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3329         _DEPFLAGS='-xM1 -xc99'
3330         _ldflags='-std=c99'
3331         _cflags_speed='-O5'
3332         _cflags_size='-O5 -xspace'
3333         _flags_filter=suncc_flags
3334     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3335         _type=pathscale
3336         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3337         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3338         _cflags_speed='-O2'
3339         _cflags_size='-Os'
3340         _flags_filter='filter_out -Wdisabled-optimization'
3341     elif $_cc -v 2>&1 | grep -q Open64; then
3342         _type=open64
3343         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3344         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3345         _cflags_speed='-O2'
3346         _cflags_size='-Os'
3347         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3348     elif $_cc -V 2>&1 | grep -q Portland; then
3349         _type=pgi
3350         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3351         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3352         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3353         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3354         _cflags_noopt="-O"
3355         _flags_filter=pgi_flags
3356     elif $_cc 2>&1 | grep -q Microsoft; then
3357         _type=msvc
3358         _ident=$($cc 2>&1 | head -n1)
3359         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3360         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3361         _cflags_speed="-O2"
3362         _cflags_size="-O1"
3363         if $_cc 2>&1 | grep -q Linker; then
3364             _ld_o='-out:$@'
3365         else
3366             _ld_o='-Fe$@'
3367         fi
3368         _cc_o='-Fo$@'
3369         _cc_e='-P -Fi$@'
3370         _flags_filter=msvc_flags
3371         _ld_lib='lib%.a'
3372         _ld_path='-libpath:'
3373         _flags='-nologo'
3374         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3375         if [ $pfx = hostcc ]; then
3376             append _cflags -Dsnprintf=_snprintf
3377         fi
3378         disable stripping
3379     elif $_cc 2>&1 | grep -q Intel; then
3380         _type=icl
3381         _ident=$($cc 2>&1 | head -n1)
3382         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3383         # Not only is O3 broken on 13.x+ but it is slower on all previous
3384         # versions (tested) as well.
3385         _cflags_speed="-O2"
3386         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3387         if $_cc 2>&1 | grep -q Linker; then
3388             _ld_o='-out:$@'
3389         else
3390             _ld_o='-Fe$@'
3391         fi
3392         _cc_o='-Fo$@'
3393         _cc_e='-P'
3394         _flags_filter=icl_flags
3395         _ld_lib='lib%.a'
3396         _ld_path='-libpath:'
3397         # -Qdiag-error to make icl error when seeing certain unknown arguments
3398         _flags='-nologo -Qdiag-error:4044,10157'
3399         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3400         # with MSVC which enables it by default.
3401         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3402         if [ $pfx = hostcc ]; then
3403             append _cflags -Dsnprintf=_snprintf
3404         fi
3405     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3406         _type=cparser
3407         _ident=$($_cc --version | head -n1)
3408         _depflags='-MMD'
3409         _cflags_speed='-O4'
3410         _cflags_size='-O2'
3411         _flags_filter=cparser_flags
3412     fi
3413
3414     eval ${pfx}_type=\$_type
3415     eval ${pfx}_ident=\$_ident
3416 }
3417
3418 set_ccvars(){
3419     eval ${1}_C=\${_cc_c-\${${1}_C}}
3420     eval ${1}_E=\${_cc_e-\${${1}_E}}
3421     eval ${1}_O=\${_cc_o-\${${1}_O}}
3422
3423     if [ -n "$_depflags" ]; then
3424         eval ${1}_DEPFLAGS=\$_depflags
3425     else
3426         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3427         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3428         eval DEP${1}FLAGS=\$_flags
3429     fi
3430 }
3431
3432 probe_cc cc "$cc"
3433 cflags_filter=$_flags_filter
3434 cflags_speed=$_cflags_speed
3435 cflags_size=$_cflags_size
3436 cflags_noopt=$_cflags_noopt
3437 add_cflags $_flags $_cflags
3438 cc_ldflags=$_ldflags
3439 set_ccvars CC
3440
3441 probe_cc hostcc "$host_cc"
3442 host_cflags_filter=$_flags_filter
3443 add_host_cflags  $_flags $_cflags
3444 set_ccvars HOSTCC
3445
3446 test -n "$cc_type" && enable $cc_type ||
3447     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3448
3449 : ${as_default:=$cc}
3450 : ${dep_cc_default:=$cc}
3451 : ${ld_default:=$cc}
3452 : ${host_ld_default:=$host_cc}
3453 set_default ar as dep_cc ld host_ld windres
3454
3455 probe_cc as "$as"
3456 asflags_filter=$_flags_filter
3457 add_asflags $_flags $_cflags
3458 set_ccvars AS
3459
3460 probe_cc ld "$ld"
3461 ldflags_filter=$_flags_filter
3462 add_ldflags $_flags $_ldflags
3463 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3464 LD_O=${_ld_o-$LD_O}
3465 LD_LIB=${_ld_lib-$LD_LIB}
3466 LD_PATH=${_ld_path-$LD_PATH}
3467
3468 probe_cc hostld "$host_ld"
3469 host_ldflags_filter=$_flags_filter
3470 add_host_ldflags $_flags $_ldflags
3471 HOSTLD_O=${_ld_o-$HOSTLD_O}
3472
3473 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3474     probe_cc depcc "$dep_cc"
3475     CCDEP=${_DEPCMD:-$DEPCMD}
3476     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3477     DEPCCFLAGS=$_flags
3478 fi
3479
3480 if $ar 2>&1 | grep -q Microsoft; then
3481     arflags="-nologo"
3482     ar_o='-out:$@'
3483 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3484     arflags="rq"
3485     ar_o='$@'
3486 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3487     arflags='-Xany -r -c'
3488     ar_o='$@'
3489 else
3490     arflags="rc"
3491     ar_o='$@'
3492 fi
3493
3494 add_cflags $extra_cflags
3495 add_cxxflags $extra_cxxflags
3496 add_asflags $extra_cflags
3497
3498 if test -n "$sysroot"; then
3499     case "$cc_type" in
3500         gcc|llvm_gcc|clang)
3501             add_cppflags --sysroot="$sysroot"
3502             add_ldflags --sysroot="$sysroot"
3503 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3504             add_cppflags -isysroot "$sysroot"
3505             add_ldflags -isysroot "$sysroot"
3506         ;;
3507         tms470)
3508             add_cppflags -I"$sysinclude"
3509             add_ldflags  --sysroot="$sysroot"
3510         ;;
3511     esac
3512 fi
3513
3514 if test "$cpu" = host; then
3515     enabled cross_compile &&
3516         die "--cpu=host makes no sense when cross-compiling."
3517
3518     case "$cc_type" in
3519         gcc|llvm_gcc)
3520             check_native(){
3521                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3522                 sed -n "/cc1.*$1=/{
3523                             s/.*$1=\\([^ ]*\\).*/\\1/
3524                             p
3525                             q
3526                         }" $TMPE
3527             }
3528             cpu=$(check_native -march || check_native -mcpu)
3529         ;;
3530     esac
3531
3532     test "${cpu:-host}" = host &&
3533         die "--cpu=host not supported with compiler $cc"
3534 fi
3535
3536 # Deal with common $arch aliases
3537 case "$arch" in
3538     aarch64|arm64)
3539         arch="aarch64"
3540     ;;
3541     arm*|iPad*|iPhone*)
3542         arch="arm"
3543     ;;
3544     mips*|IP*)
3545         arch="mips"
3546     ;;
3547     parisc*|hppa*)
3548         arch="parisc"
3549     ;;
3550     "Power Macintosh"|ppc*|powerpc*)
3551         arch="ppc"
3552     ;;
3553     s390|s390x)
3554         arch="s390"
3555     ;;
3556     sh4|sh)
3557         arch="sh4"
3558     ;;
3559     sun4u|sparc*)
3560         arch="sparc"
3561     ;;
3562     tilegx|tile-gx)
3563         arch="tilegx"
3564     ;;
3565     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3566         arch="x86"
3567     ;;
3568 esac
3569
3570 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3571 enable $arch
3572
3573 # Add processor-specific flags
3574 if enabled aarch64; then
3575
3576     case $cpu in
3577         armv*)
3578             cpuflags="-march=$cpu"
3579         ;;
3580         *)
3581             cpuflags="-mcpu=$cpu"
3582         ;;
3583     esac
3584
3585 elif enabled alpha; then
3586
3587     cpuflags="-mcpu=$cpu"
3588
3589 elif enabled arm; then
3590
3591     check_arm_arch() {
3592         check_cpp_condition stddef.h \
3593             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3594             $cpuflags
3595     }
3596
3597     probe_arm_arch() {
3598         if   check_arm_arch 4;        then echo armv4;
3599         elif check_arm_arch 4T;       then echo armv4t;
3600         elif check_arm_arch 5;        then echo armv5;
3601         elif check_arm_arch 5E;       then echo armv5e;
3602         elif check_arm_arch 5T;       then echo armv5t;
3603         elif check_arm_arch 5TE;      then echo armv5te;
3604         elif check_arm_arch 5TEJ;     then echo armv5te;
3605         elif check_arm_arch 6;        then echo armv6;
3606         elif check_arm_arch 6J;       then echo armv6j;
3607         elif check_arm_arch 6K;       then echo armv6k;
3608         elif check_arm_arch 6Z;       then echo armv6z;
3609         elif check_arm_arch 6ZK;      then echo armv6zk;
3610         elif check_arm_arch 6T2;      then echo armv6t2;
3611         elif check_arm_arch 7;        then echo armv7;
3612         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3613         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3614         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3615         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3616         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3617         fi
3618     }
3619
3620     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3621
3622     case $cpu in
3623         armv*)
3624             cpuflags="-march=$cpu"
3625             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3626         ;;
3627         *)
3628             cpuflags="-mcpu=$cpu"
3629             case $cpu in
3630                 cortex-a*)                               subarch=armv7a  ;;
3631                 cortex-r*)                               subarch=armv7r  ;;
3632                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3633                 arm11*)                                  subarch=armv6   ;;
3634                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3635                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3636                 *)                             subarch=$(probe_arm_arch) ;;
3637             esac
3638         ;;
3639     esac
3640
3641     case "$subarch" in
3642         armv5t*)    enable fast_clz                ;;
3643         armv[6-8]*)
3644             enable fast_clz
3645             disabled fast_unaligned || enable fast_unaligned
3646             ;;
3647     esac
3648
3649 elif enabled avr32; then
3650
3651     case $cpu in
3652         ap7[02]0[0-2])
3653             subarch="avr32_ap"
3654             cpuflags="-mpart=$cpu"
3655         ;;
3656         ap)
3657             subarch="avr32_ap"
3658             cpuflags="-march=$cpu"
3659         ;;
3660         uc3[ab]*)
3661             subarch="avr32_uc"
3662             cpuflags="-mcpu=$cpu"
3663         ;;
3664         uc)
3665             subarch="avr32_uc"
3666             cpuflags="-march=$cpu"
3667         ;;
3668     esac
3669
3670 elif enabled bfin; then
3671
3672     cpuflags="-mcpu=$cpu"
3673
3674 elif enabled mips; then
3675
3676     cpuflags="-march=$cpu"
3677
3678     case $cpu in
3679         24kc)
3680             disable mipsfpu
3681             disable mipsdspr1
3682             disable mipsdspr2
3683         ;;
3684         24kf*)
3685             disable mipsdspr1
3686             disable mipsdspr2
3687         ;;
3688         24kec|34kc|1004kc)
3689             disable mipsfpu
3690             disable mipsdspr2
3691         ;;
3692         24kef*|34kf*|1004kf*)
3693             disable mipsdspr2
3694         ;;
3695         74kc)
3696             disable mipsfpu
3697         ;;
3698     esac
3699
3700 elif enabled ppc; then
3701
3702     disable ldbrx
3703     disable vsx
3704
3705     case $(tolower $cpu) in
3706         601|ppc601|powerpc601)
3707             cpuflags="-mcpu=601"
3708             disable altivec
3709         ;;
3710         603*|ppc603*|powerpc603*)
3711             cpuflags="-mcpu=603"
3712             disable altivec
3713         ;;
3714         604*|ppc604*|powerpc604*)
3715             cpuflags="-mcpu=604"
3716             disable altivec
3717         ;;
3718         g3|75*|ppc75*|powerpc75*)
3719             cpuflags="-mcpu=750"
3720             disable altivec
3721         ;;
3722         g4|745*|ppc745*|powerpc745*)
3723             cpuflags="-mcpu=7450"
3724         ;;
3725         74*|ppc74*|powerpc74*)
3726             cpuflags="-mcpu=7400"
3727         ;;
3728         g5|970|ppc970|powerpc970)
3729             cpuflags="-mcpu=970"
3730         ;;
3731         power[3-8]*)
3732             cpuflags="-mcpu=$cpu"
3733         ;;
3734         cell)
3735             cpuflags="-mcpu=cell"
3736             enable ldbrx
3737         ;;
3738         e500mc)
3739             cpuflags="-mcpu=e500mc"
3740             disable altivec
3741         ;;
3742         e500v2)
3743             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3744             disable altivec
3745             disable dcbzl
3746         ;;
3747         e500)
3748             cpuflags="-mcpu=8540 -mhard-float"
3749             disable altivec
3750             disable dcbzl
3751         ;;
3752     esac
3753
3754 elif enabled sparc; then
3755
3756     case $cpu in
3757         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3758             cpuflags="-mcpu=$cpu"
3759         ;;
3760         ultrasparc*|niagara[234])
3761             cpuflags="-mcpu=$cpu"
3762         ;;
3763     esac
3764
3765 elif enabled x86; then
3766
3767     case $cpu in
3768         i[345]86|pentium)
3769             cpuflags="-march=$cpu"
3770             disable mmx
3771         ;;
3772         # targets that do NOT support nopl and conditional mov (cmov)
3773         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3774             cpuflags="-march=$cpu"
3775             disable i686
3776         ;;
3777         # targets that do support nopl and conditional mov (cmov)
3778         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3779         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3780             cpuflags="-march=$cpu"
3781             enable i686
3782             enable fast_cmov
3783         ;;
3784         # targets that do support conditional mov but on which it's slow
3785         pentium4|pentium4m|prescott|nocona)
3786             cpuflags="-march=$cpu"
3787             enable i686
3788             disable fast_cmov
3789         ;;
3790     esac
3791
3792 fi
3793
3794 if [ "$cpu" != generic ]; then
3795     add_cflags  $cpuflags
3796     add_asflags $cpuflags
3797 fi
3798
3799 # compiler sanity check
3800 check_exec <<EOF
3801 int main(void){ return 0; }
3802 EOF
3803 if test "$?" != 0; then
3804     echo "$cc is unable to create an executable file."
3805     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3806         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3807         echo "Only do this if you know what cross compiling means."
3808     fi
3809     die "C compiler test failed."
3810 fi
3811
3812 add_cppflags -D_ISOC99_SOURCE
3813 add_cxxflags -D__STDC_CONSTANT_MACROS
3814 check_cflags -std=c99
3815 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3816 #include <stdlib.h>
3817 EOF
3818 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3819 #include <stdlib.h>
3820 EOF
3821
3822 add_host_cppflags -D_ISOC99_SOURCE
3823 check_host_cflags -std=c99
3824 check_host_cflags -Wall
3825 check_host_cflags -O3
3826
3827 check_64bit(){
3828     arch32=$1
3829     arch64=$2
3830     expr=$3
3831     check_code cc "" "int test[2*($expr) - 1]" &&
3832         subarch=$arch64 || subarch=$arch32
3833 }
3834
3835 case "$arch" in
3836     aarch64|alpha|ia64)
3837         spic=$shared
3838     ;;
3839     mips)
3840         check_64bit mips mips64 '_MIPS_SIM > 1'
3841         spic=$shared
3842     ;;
3843     parisc)
3844         check_64bit parisc parisc64 'sizeof(void *) > 4'
3845         spic=$shared
3846     ;;
3847     ppc)
3848         check_64bit ppc ppc64 'sizeof(void *) > 4'
3849         spic=$shared
3850     ;;
3851     s390)
3852         check_64bit s390 s390x 'sizeof(void *) > 4'
3853         spic=$shared
3854     ;;
3855     sparc)
3856         check_64bit sparc sparc64 'sizeof(void *) > 4'
3857         spic=$shared
3858     ;;
3859     x86)
3860         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3861         if test "$subarch" = "x86_64"; then
3862             spic=$shared
3863         fi
3864     ;;
3865     ppc)
3866         check_cc <<EOF && subarch="ppc64"
3867         int test[(int)sizeof(char*) - 7];
3868 EOF
3869     ;;
3870 esac
3871
3872 enable $subarch
3873 enabled spic && enable_weak pic
3874
3875 # OS specific
3876 case $target_os in
3877     aix)
3878         SHFLAGS=-shared
3879         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3880         enabled shared && add_ldflags -Wl,-brtl
3881         ;;
3882     android)
3883         disable symver
3884         SLIB_INSTALL_NAME='$(SLIBNAME)'
3885         SLIB_INSTALL_LINKS=
3886         # soname not set on purpose
3887         SHFLAGS=-shared
3888         ;;
3889     haiku)
3890         prefix_default="/boot/common"
3891         network_extralibs="-lnetwork"
3892         host_libs=
3893         ;;
3894     sunos)
3895         SHFLAGS='-shared -Wl,-h,$$(@F)'
3896         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3897         network_extralibs="-lsocket -lnsl"
3898         # When using suncc to build, the Solaris linker will mark
3899         # an executable with each instruction set encountered by
3900         # the Solaris assembler.  As our libraries contain their own
3901         # guards for processor-specific code, instead suppress
3902         # generation of the HWCAPS ELF section on Solaris x86 only.
3903         enabled_all suncc x86 &&
3904             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3905             add_ldflags -Wl,-M,mapfile
3906         nm_default='nm -P -g'
3907         ;;
3908     netbsd)
3909         disable symver
3910         oss_indev_extralibs="-lossaudio"
3911         oss_outdev_extralibs="-lossaudio"
3912         enabled gcc || check_ldflags -Wl,-zmuldefs
3913         ;;
3914     openbsd|bitrig)
3915         disable symver
3916         SHFLAGS='-shared'
3917         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3918         SLIB_INSTALL_LINKS=
3919         oss_indev_extralibs="-lossaudio"
3920         oss_outdev_extralibs="-lossaudio"
3921         ;;
3922     dragonfly)
3923         disable symver
3924         ;;
3925     freebsd)
3926         ;;
3927     bsd/os)
3928         add_extralibs -lpoll -lgnugetopt
3929         strip="strip -d"
3930         ;;
3931     darwin)
3932         test "${as#*gas-preprocessor.pl}" != "$as" || gas="${gas:=gas-preprocessor.pl} ${as:=$cc}"
3933         enabled ppc && add_asflags -force_cpusubtype_ALL
3934         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3935         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3936         strip="${strip} -x"
3937         add_ldflags -Wl,-dynamic,-search_paths_first
3938         SLIBSUF=".dylib"
3939         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3940         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3941         objformat="macho"
3942         enabled x86_64 && objformat="macho64"
3943         enabled_any pic shared ||
3944             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3945         ;;
3946     mingw32*)
3947         if test $target_os = "mingw32ce"; then
3948             disable network
3949         else
3950             target_os=mingw32
3951         fi
3952         LIBTARGET=i386
3953         if enabled x86_64; then
3954             LIBTARGET="i386:x86-64"
3955         elif enabled arm; then
3956             LIBTARGET=arm-wince
3957         fi
3958         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3959         check_ldflags -Wl,--nxcompat
3960         check_ldflags -Wl,--dynamicbase
3961         shlibdir_default="$bindir_default"
3962         SLIBPREF=""
3963         SLIBSUF=".dll"
3964         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3965         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3966         dlltool="${cross_prefix}dlltool"
3967         if check_cmd lib.exe -list; then
3968             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3969             if enabled x86_64; then
3970                 LIBTARGET=x64
3971             fi
3972         elif check_cmd $dlltool --version; then
3973             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3974         fi
3975         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3976         SLIB_INSTALL_LINKS=
3977         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3978         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3979         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3980         objformat="win32"
3981         ranlib=:
3982         enable dos_paths
3983         ;;
3984     win32|win64)
3985         disable symver
3986         if enabled shared; then
3987             # Link to the import library instead of the normal static library
3988             # for shared libs.
3989             LD_LIB='%.lib'
3990             # Cannot build both shared and static libs with MSVC or icl.
3991             disable static
3992         fi
3993         shlibdir_default="$bindir_default"
3994         SLIBPREF=""
3995         SLIBSUF=".dll"
3996         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3997         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3998         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3999         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4000         SLIB_INSTALL_LINKS=
4001         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4002         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4003         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4004         objformat="win32"
4005         ranlib=:
4006         enable dos_paths
4007         ;;
4008     cygwin*)
4009         target_os=cygwin
4010         shlibdir_default="$bindir_default"
4011         SLIBPREF="cyg"
4012         SLIBSUF=".dll"
4013         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4014         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4015         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4016         SLIB_INSTALL_LINKS=
4017         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4018         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4019         objformat="win32"
4020         enable dos_paths
4021         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4022         ;;
4023     *-dos|freedos|opendos)
4024         network_extralibs="-lsocket"
4025         objformat="coff"
4026         enable dos_paths
4027         add_cppflags -U__STRICT_ANSI__
4028         ;;
4029     linux)
4030         enable dv1394
4031         ;;
4032     irix*)
4033         target_os=irix
4034         ranlib="echo ignoring ranlib"
4035         ;;
4036     os/2*)
4037         strip="lxlite -CS"
4038         ln_s="cp -f"
4039         objformat="aout"
4040         add_cppflags -D_GNU_SOURCE
4041         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4042         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4043         LIBSUF="_s.a"
4044         SLIBPREF=""
4045         SLIBSUF=".dll"
4046         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4047         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4048         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4049             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4050             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4051             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4052             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4053             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4054         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4055             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4056         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4057         enable dos_paths
4058         enable_weak os2threads