hevc/mvs: cosmetics
[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-libfribidi      enable libfribidi [no]
213   --enable-libgme          enable Game Music Emu via libgme [no]
214   --enable-libgsm          enable GSM de/encoding via libgsm [no]
215   --enable-libiec61883     enable iec61883 via libiec61883 [no]
216   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
217   --enable-libmodplug      enable ModPlug via libmodplug [no]
218   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
219   --enable-libnut          enable NUT (de)muxing via libnut,
220                            native (de)muxer exists [no]
221   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
222   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
223   --enable-libopencv       enable video filtering via libopencv [no]
224   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
225   --enable-libopus         enable Opus de/encoding via libopus [no]
226   --enable-libpulse        enable Pulseaudio input via libpulse [no]
227   --enable-libquvi         enable quvi input via libquvi [no]
228   --enable-librtmp         enable RTMP[E] support via librtmp [no]
229   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
230   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
231   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
232   --enable-libsoxr         enable Include libsoxr resampling [no]
233   --enable-libspeex        enable Speex de/encoding via libspeex [no]
234   --enable-libssh          enable SFTP protocol via libssh [no]
235   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
236   --enable-libtheora       enable Theora encoding via libtheora [no]
237   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
238   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
239   --enable-libv4l2         enable libv4l2/v4l-utils [no]
240   --enable-libvidstab      enable video stabilization using vid.stab [no]
241   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
242   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
243   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
244                            native implementation exists [no]
245   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
246   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
247   --enable-libwebp         enable WebP encoding via libwebp [no]
248   --enable-libx264         enable H.264 encoding via x264 [no]
249   --enable-libx265         enable HEVC encoding via x265 [no]
250   --enable-libxavs         enable AVS encoding via xavs [no]
251   --enable-libxvid         enable Xvid encoding via xvidcore,
252                            native MPEG-4/Xvid encoder exists [no]
253   --enable-libzmq          enable message passing via libzmq [no]
254   --enable-libzvbi         enable teletext support via libzvbi [no]
255   --enable-decklink        enable Blackmagick DeckLink output [no]
256   --enable-openal          enable OpenAL 1.1 capture support [no]
257   --enable-opencl          enable OpenCL code
258   --enable-opengl          enable OpenGL rendering [no]
259   --enable-openssl         enable openssl [no]
260   --enable-x11grab         enable X11 grabbing [no]
261   --disable-xlib           disable xlib [autodetect]
262   --disable-zlib           disable zlib [autodetect]
263
264 Toolchain options:
265   --arch=ARCH              select architecture [$arch]
266   --cpu=CPU                select the minimum required CPU (affects
267                            instruction selection, may crash on older CPUs)
268   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
269   --progs-suffix=SUFFIX    program name suffix []
270   --enable-cross-compile   assume a cross-compiler is used
271   --sysroot=PATH           root of cross-build tree
272   --sysinclude=PATH        location of cross-build system headers
273   --target-os=OS           compiler targets OS [$target_os]
274   --target-exec=CMD        command to run executables on target
275   --target-path=DIR        path to view of build directory on target
276   --target-samples=DIR     path to samples directory on target
277   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
278   --toolchain=NAME         set tool defaults according to NAME
279   --nm=NM                  use nm tool NM [$nm_default]
280   --ar=AR                  use archive tool AR [$ar_default]
281   --as=AS                  use assembler AS [$as_default]
282   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
283   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
284   --cc=CC                  use C compiler CC [$cc_default]
285   --cxx=CXX                use C compiler CXX [$cxx_default]
286   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
287   --ld=LD                  use linker LD [$ld_default]
288   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
289   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
290   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
291   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
292   --host-cc=HOSTCC         use host C compiler HOSTCC
293   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
294   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
295   --host-ld=HOSTLD         use host linker HOSTLD
296   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
297   --host-libs=HLIBS        use libs HLIBS when linking for host
298   --host-os=OS             compiler host OS [$target_os]
299   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
300   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
301   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
302   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
303   --extra-libs=ELIBS       add ELIBS [$ELIBS]
304   --extra-version=STRING   version string suffix []
305   --optflags=OPTFLAGS      override optimization-related compiler flags
306   --build-suffix=SUFFIX    library name suffix []
307   --enable-pic             build position-independent code
308   --enable-thumb           compile for Thumb instruction set
309   --enable-lto             use link-time optimization
310
311 Advanced options (experts only):
312   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
313   --disable-symver         disable symbol versioning
314   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
315   --disable-safe-bitstream-reader
316                            disable buffer boundary checking in bitreaders
317                            (faster, but may crash)
318   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
319   --enable-sram            allow use of on-chip SRAM
320   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
321
322 Optimization options (experts only):
323   --disable-asm            disable all assembly optimizations
324   --disable-altivec        disable AltiVec optimizations
325   --disable-amd3dnow       disable 3DNow! optimizations
326   --disable-amd3dnowext    disable 3DNow! extended optimizations
327   --disable-mmx            disable MMX optimizations
328   --disable-mmxext         disable MMXEXT optimizations
329   --disable-sse            disable SSE optimizations
330   --disable-sse2           disable SSE2 optimizations
331   --disable-sse3           disable SSE3 optimizations
332   --disable-ssse3          disable SSSE3 optimizations
333   --disable-sse4           disable SSE4 optimizations
334   --disable-sse42          disable SSE4.2 optimizations
335   --disable-avx            disable AVX optimizations
336   --disable-xop            disable XOP optimizations
337   --disable-fma3           disable FMA3 optimizations
338   --disable-fma4           disable FMA4 optimizations
339   --disable-avx2           disable AVX2 optimizations
340   --disable-armv5te        disable armv5te optimizations
341   --disable-armv6          disable armv6 optimizations
342   --disable-armv6t2        disable armv6t2 optimizations
343   --disable-vfp            disable VFP optimizations
344   --disable-neon           disable NEON optimizations
345   --disable-inline-asm     disable use of inline assembly
346   --disable-yasm           disable use of nasm/yasm assembly
347   --disable-mips32r2       disable MIPS32R2 optimizations
348   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
349   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
350   --disable-mipsfpu        disable floating point MIPS optimizations
351   --disable-fast-unaligned consider unaligned accesses slow
352
353 Developer options (useful when working on FFmpeg itself):
354   --disable-debug          disable debugging symbols
355   --enable-debug=LEVEL     set the debug level [$debuglevel]
356   --disable-optimizations  disable compiler optimizations
357   --enable-extra-warnings  enable more compiler warnings
358   --disable-stripping      disable stripping of executables and shared libraries
359   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
360                            2 causes a slowdown at runtime.
361   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
362   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
363                            leaks and errors, using the specified valgrind binary.
364                            Cannot be combined with --target-exec
365   --enable-ftrapv          Trap arithmetic overflows
366   --samples=PATH           location of test samples for FATE, if not set use
367                            \$FATE_SAMPLES at make invocation time.
368   --enable-neon-clobber-test check NEON registers for clobbering (should be
369                            used only for debugging purposes)
370   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
371                            should be used only for debugging purposes)
372   --enable-random          randomly enable/disable components
373   --disable-random
374   --enable-random=LIST     randomly enable/disable specific components or
375   --disable-random=LIST    component groups. LIST is a comma-separated list
376                            of NAME[:PROB] entries where NAME is a component
377                            (group) and PROB the probability associated with
378                            NAME (default 0.5).
379   --random-seed=VALUE      seed value for --enable/disable-random
380
381 NOTE: Object files are built at the place where configure is launched.
382 EOF
383   exit 0
384 }
385
386 quotes='""'
387
388 log(){
389     echo "$@" >> $logfile
390 }
391
392 log_file(){
393     log BEGIN $1
394     pr -n -t $1 >> $logfile
395     log END $1
396 }
397
398 echolog(){
399     log "$@"
400     echo "$@"
401 }
402
403 warn(){
404     log "WARNING: $*"
405     WARNINGS="${WARNINGS}WARNING: $*\n"
406 }
407
408 die(){
409     echolog "$@"
410     cat <<EOF
411
412 If you think configure made a mistake, make sure you are using the latest
413 version from Git.  If the latest version fails, report the problem to the
414 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
415 EOF
416     if disabled logging; then
417         cat <<EOF
418 Rerun configure with logging enabled (do not use --disable-logging), and
419 include the log this produces with your report.
420 EOF
421     else
422         cat <<EOF
423 Include the log file "$logfile" produced by configure as this will help
424 solve the problem.
425 EOF
426     fi
427     exit 1
428 }
429
430 # Avoid locale weirdness, besides we really just want to translate ASCII.
431 toupper(){
432     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
433 }
434
435 tolower(){
436     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
437 }
438
439 c_escape(){
440     echo "$*" | sed 's/["\\]/\\\0/g'
441 }
442
443 sh_quote(){
444     v=$(echo "$1" | sed "s/'/'\\\\''/g")
445     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
446     echo "$v"
447 }
448
449 cleanws(){
450     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
451 }
452
453 filter(){
454     pat=$1
455     shift
456     for v; do
457         eval "case $v in $pat) echo $v ;; esac"
458     done
459 }
460
461 filter_out(){
462     pat=$1
463     shift
464     for v; do
465         eval "case $v in $pat) ;; *) echo $v ;; esac"
466     done
467 }
468
469 map(){
470     m=$1
471     shift
472     for v; do eval $m; done
473 }
474
475 add_suffix(){
476     suffix=$1
477     shift
478     for v; do echo ${v}${suffix}; done
479 }
480
481 set_all(){
482     value=$1
483     shift
484     for var in $*; do
485         eval $var=$value
486     done
487 }
488
489 set_weak(){
490     value=$1
491     shift
492     for var; do
493         eval : \${$var:=$value}
494     done
495 }
496
497 sanitize_var_name(){
498     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
499 }
500
501 set_safe(){
502     var=$1
503     shift
504     eval $(sanitize_var_name "$var")='$*'
505 }
506
507 get_safe(){
508     eval echo \$$(sanitize_var_name "$1")
509 }
510
511 pushvar(){
512     for pvar in $*; do
513         eval level=\${${pvar}_level:=0}
514         eval ${pvar}_${level}="\$$pvar"
515         eval ${pvar}_level=$(($level+1))
516     done
517 }
518
519 popvar(){
520     for pvar in $*; do
521         eval level=\${${pvar}_level:-0}
522         test $level = 0 && continue
523         eval level=$(($level-1))
524         eval $pvar="\${${pvar}_${level}}"
525         eval ${pvar}_level=$level
526         eval unset ${pvar}_${level}
527     done
528 }
529
530 enable(){
531     set_all yes $*
532 }
533
534 disable(){
535     set_all no $*
536 }
537
538 enable_weak(){
539     set_weak yes $*
540 }
541
542 disable_weak(){
543     set_weak no $*
544 }
545
546 enable_safe(){
547     for var; do
548         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
549     done
550 }
551
552 disable_safe(){
553     for var; do
554         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
555     done
556 }
557
558 do_enable_deep(){
559     for var; do
560         enabled $var && continue
561         eval sel="\$${var}_select"
562         eval sgs="\$${var}_suggest"
563         pushvar var sgs
564         enable_deep $sel
565         popvar sgs
566         enable_deep_weak $sgs
567         popvar var
568     done
569 }
570
571 enable_deep(){
572     do_enable_deep $*
573     enable $*
574 }
575
576 enable_deep_weak(){
577     for var; do
578         disabled $var && continue
579         pushvar var
580         do_enable_deep $var
581         popvar var
582         enable_weak $var
583     done
584 }
585
586 enabled(){
587     test "${1#!}" = "$1" && op== || op=!=
588     eval test "x\$${1#!}" $op "xyes"
589 }
590
591 disabled(){
592     test "${1#!}" = "$1" && op== || op=!=
593     eval test "x\$${1#!}" $op "xno"
594 }
595
596 enabled_all(){
597     for opt; do
598         enabled $opt || return 1
599     done
600 }
601
602 disabled_all(){
603     for opt; do
604         disabled $opt || return 1
605     done
606 }
607
608 enabled_any(){
609     for opt; do
610         enabled $opt && return 0
611     done
612 }
613
614 disabled_any(){
615     for opt; do
616         disabled $opt && return 0
617     done
618     return 1
619 }
620
621 set_default(){
622     for opt; do
623         eval : \${$opt:=\$${opt}_default}
624     done
625 }
626
627 is_in(){
628     value=$1
629     shift
630     for var in $*; do
631         [ $var = $value ] && return 0
632     done
633     return 1
634 }
635
636 do_check_deps(){
637     for cfg; do
638         cfg="${cfg#!}"
639         enabled ${cfg}_checking && die "Circular dependency for $cfg."
640         disabled ${cfg}_checking && continue
641         enable ${cfg}_checking
642         append allopts $cfg
643
644         eval dep_all="\$${cfg}_deps"
645         eval dep_any="\$${cfg}_deps_any"
646         eval dep_sel="\$${cfg}_select"
647         eval dep_sgs="\$${cfg}_suggest"
648         eval dep_ifa="\$${cfg}_if"
649         eval dep_ifn="\$${cfg}_if_any"
650
651         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
652         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
653         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
654
655         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
656         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
657         enabled_all  $dep_all || disable $cfg
658         enabled_any  $dep_any || disable $cfg
659         disabled_any $dep_sel && disable $cfg
660
661         if enabled $cfg; then
662             enable_deep $dep_sel
663             enable_deep_weak $dep_sgs
664         fi
665
666         disable ${cfg}_checking
667     done
668 }
669
670 check_deps(){
671     unset allopts
672
673     do_check_deps "$@"
674
675     for cfg in $allopts; do
676         enabled $cfg || continue
677         eval dep_extralibs="\$${cfg}_extralibs"
678         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
679     done
680 }
681
682 print_config(){
683     pfx=$1
684     files=$2
685     shift 2
686     map 'eval echo "$v \${$v:-no}"' "$@" |
687     awk "BEGIN { split(\"$files\", files) }
688         {
689             c = \"$pfx\" toupper(\$1);
690             v = \$2;
691             sub(/yes/, 1, v);
692             sub(/no/,  0, v);
693             for (f in files) {
694                 file = files[f];
695                 if (file ~ /\\.h\$/) {
696                     printf(\"#define %s %d\\n\", c, v) >>file;
697                 } else if (file ~ /\\.asm\$/) {
698                     printf(\"%%define %s %d\\n\", c, v) >>file;
699                 } else if (file ~ /\\.mak\$/) {
700                     n = -v ? \"\" : \"!\";
701                     printf(\"%s%s=yes\\n\", n, c) >>file;
702                 } else if (file ~ /\\.texi\$/) {
703                     pre = -v ? \"\" : \"@c \";
704                     yesno = \$2;
705                     c2 = tolower(c);
706                     gsub(/_/, \"-\", c2);
707                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
708                 }
709             }
710         }"
711 }
712
713 print_enabled(){
714     suf=$1
715     shift
716     for v; do
717         enabled $v && printf "%s\n" ${v%$suf};
718     done
719 }
720
721 append(){
722     var=$1
723     shift
724     eval "$var=\"\$$var $*\""
725 }
726
727 prepend(){
728     var=$1
729     shift
730     eval "$var=\"$* \$$var\""
731 }
732
733 unique(){
734     var=$1
735     uniq_list=""
736     for tok in $(eval echo \$$var); do
737         uniq_list="$(filter_out $tok $uniq_list) $tok"
738     done
739     eval "$var=\"${uniq_list}\""
740 }
741
742 add_cppflags(){
743     append CPPFLAGS "$@"
744 }
745
746 add_cflags(){
747     append CFLAGS $($cflags_filter "$@")
748 }
749
750 add_cxxflags(){
751     append CXXFLAGS $($cflags_filter "$@")
752 }
753
754 add_asflags(){
755     append ASFLAGS $($asflags_filter "$@")
756 }
757
758 add_ldflags(){
759     append LDFLAGS $($ldflags_filter "$@")
760 }
761
762 add_ldexeflags(){
763     append LDEXEFLAGS $($ldflags_filter "$@")
764 }
765
766 add_stripflags(){
767     append ASMSTRIPFLAGS "$@"
768 }
769
770 add_extralibs(){
771     prepend extralibs $($ldflags_filter "$@")
772 }
773
774 add_host_cppflags(){
775     append host_cppflags "$@"
776 }
777
778 add_host_cflags(){
779     append host_cflags $($host_cflags_filter "$@")
780 }
781
782 add_host_ldflags(){
783     append host_ldflags $($host_ldflags_filter "$@")
784 }
785
786 add_compat(){
787     append compat_objs $1
788     shift
789     map 'add_cppflags -D$v' "$@"
790 }
791
792 check_cmd(){
793     log "$@"
794     "$@" >> $logfile 2>&1
795 }
796
797 check_stat(){
798     log check_stat "$@"
799     stat "$1" >> $logfile 2>&1
800 }
801
802 cc_o(){
803     eval printf '%s\\n' $CC_O
804 }
805
806 cc_e(){
807     eval printf '%s\\n' $CC_E
808 }
809
810 check_cc(){
811     log check_cc "$@"
812     cat > $TMPC
813     log_file $TMPC
814     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
815 }
816
817 check_cxx(){
818     log check_cxx "$@"
819     cat > $TMPCPP
820     log_file $TMPCPP
821     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
822 }
823
824 check_oc(){
825     log check_oc "$@"
826     cat > $TMPM
827     log_file $TMPM
828     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
829 }
830
831 check_cpp(){
832     log check_cpp "$@"
833     cat > $TMPC
834     log_file $TMPC
835     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
836 }
837
838 as_o(){
839     eval printf '%s\\n' $AS_O
840 }
841
842 check_as(){
843     log check_as "$@"
844     cat > $TMPS
845     log_file $TMPS
846     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
847 }
848
849 check_inline_asm(){
850     log check_inline_asm "$@"
851     name="$1"
852     code="$2"
853     shift 2
854     disable $name
855     check_cc "$@" <<EOF && enable $name
856 void foo(void){ __asm__ volatile($code); }
857 EOF
858 }
859
860 check_insn(){
861     log check_insn "$@"
862     check_inline_asm ${1}_inline "\"$2\""
863     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
864 }
865
866 check_yasm(){
867     log check_yasm "$@"
868     echo "$1" > $TMPS
869     log_file $TMPS
870     shift 1
871     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
872 }
873
874 ld_o(){
875     eval printf '%s\\n' $LD_O
876 }
877
878 check_ld(){
879     log check_ld "$@"
880     type=$1
881     shift 1
882     flags=$(filter_out '-l*|*.so' $@)
883     libs=$(filter '-l*|*.so' $@)
884     check_$type $($cflags_filter $flags) || return
885     flags=$($ldflags_filter $flags)
886     libs=$($ldflags_filter $libs)
887     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
888 }
889
890 print_include(){
891     hdr=$1
892     test "${hdr%.h}" = "${hdr}" &&
893         echo "#include $hdr"    ||
894         echo "#include <$hdr>"
895 }
896
897 check_code(){
898     log check_code "$@"
899     check=$1
900     headers=$2
901     code=$3
902     shift 3
903     {
904         for hdr in $headers; do
905             print_include $hdr
906         done
907         echo "int main(void) { $code; return 0; }"
908     } | check_$check "$@"
909 }
910
911 check_cppflags(){
912     log check_cppflags "$@"
913     check_cc "$@" <<EOF && append CPPFLAGS "$@"
914 int x;
915 EOF
916 }
917
918 test_cflags(){
919     log test_cflags "$@"
920     set -- $($cflags_filter "$@")
921     check_cc "$@" <<EOF
922 int x;
923 EOF
924 }
925
926 check_cflags(){
927     log check_cflags "$@"
928     test_cflags "$@" && add_cflags "$@"
929 }
930
931 check_cxxflags(){
932     log check_cxxflags "$@"
933     set -- $($cflags_filter "$@")
934     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
935 int x;
936 EOF
937 }
938
939 test_ldflags(){
940     log test_ldflags "$@"
941     check_ld "cc" "$@" <<EOF
942 int main(void){ return 0; }
943 EOF
944 }
945
946 check_ldflags(){
947     log check_ldflags "$@"
948     test_ldflags "$@" && add_ldflags "$@"
949 }
950
951 test_stripflags(){
952     log test_stripflags "$@"
953     # call check_cc to get a fresh TMPO
954     check_cc <<EOF
955 int main(void) { return 0; }
956 EOF
957     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
958 }
959
960 check_stripflags(){
961     log check_stripflags "$@"
962     test_stripflags "$@" && add_stripflags "$@"
963 }
964
965 check_header(){
966     log check_header "$@"
967     header=$1
968     shift
969     disable_safe $header
970     check_cpp "$@" <<EOF && enable_safe $header
971 #include <$header>
972 int x;
973 EOF
974 }
975
976 check_header_oc(){
977     log check_header_oc "$@"
978     rm -f -- "$TMPO"
979     header=$1
980     shift
981     disable_safe $header
982     {
983        echo "#include <$header>"
984        echo "int main(void) { return 0; }"
985     } | check_oc && check_stat "$TMPO" && enable_safe $headers
986 }
987
988 check_func(){
989     log check_func "$@"
990     func=$1
991     shift
992     disable $func
993     check_ld "cc" "$@" <<EOF && enable $func
994 extern int $func();
995 int main(void){ $func(); }
996 EOF
997 }
998
999 check_mathfunc(){
1000     log check_mathfunc "$@"
1001     func=$1
1002     narg=$2
1003     shift 2
1004     test $narg = 2 && args="f, g" || args="f"
1005     disable $func
1006     check_ld "cc" "$@" <<EOF && enable $func
1007 #include <math.h>
1008 float foo(float f, float g) { return $func($args); }
1009 int main(void){ return (int) foo; }
1010 EOF
1011 }
1012
1013 check_func_headers(){
1014     log check_func_headers "$@"
1015     headers=$1
1016     funcs=$2
1017     shift 2
1018     {
1019         for hdr in $headers; do
1020             print_include $hdr
1021         done
1022         for func in $funcs; do
1023             echo "long check_$func(void) { return (long) $func; }"
1024         done
1025         echo "int main(void) { return 0; }"
1026     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1027 }
1028
1029 check_class_headers_cpp(){
1030     log check_class_headers_cpp "$@"
1031     headers=$1
1032     classes=$2
1033     shift 2
1034     {
1035         for hdr in $headers; do
1036             echo "#include <$hdr>"
1037         done
1038         echo "int main(void) { "
1039         i=1
1040         for class in $classes; do
1041             echo "$class obj$i;"
1042             i=$(expr $i + 1)
1043         done
1044         echo "return 0; }"
1045     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1046 }
1047
1048 check_cpp_condition(){
1049     log check_cpp_condition "$@"
1050     header=$1
1051     condition=$2
1052     shift 2
1053     check_cpp "$@" <<EOF
1054 #include <$header>
1055 #if !($condition)
1056 #error "unsatisfied condition: $condition"
1057 #endif
1058 EOF
1059 }
1060
1061 check_lib(){
1062     log check_lib "$@"
1063     header="$1"
1064     func="$2"
1065     shift 2
1066     check_header $header && check_func $func "$@" && add_extralibs "$@"
1067 }
1068
1069 check_lib2(){
1070     log check_lib2 "$@"
1071     headers="$1"
1072     funcs="$2"
1073     shift 2
1074     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1075 }
1076
1077 check_lib_cpp(){
1078     log check_lib_cpp "$@"
1079     headers="$1"
1080     classes="$2"
1081     shift 2
1082     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1083 }
1084
1085 check_pkg_config(){
1086     log check_pkg_config "$@"
1087     pkgandversion="$1"
1088     pkg="${1%% *}"
1089     headers="$2"
1090     funcs="$3"
1091     shift 3
1092     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1093     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1094     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1095     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1096         set_safe ${pkg}_cflags $pkg_cflags   &&
1097         set_safe ${pkg}_libs   $pkg_libs
1098 }
1099
1100 check_exec(){
1101     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1102 }
1103
1104 check_exec_crash(){
1105     code=$(cat)
1106
1107     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1108     # are safe but may not be available everywhere.  Thus we use
1109     # raise(SIGTERM) instead.  The check is run in a subshell so we
1110     # can redirect the "Terminated" message from the shell.  SIGBUS
1111     # is not defined by standard C so it is used conditionally.
1112
1113     (check_exec "$@") >> $logfile 2>&1 <<EOF
1114 #include <signal.h>
1115 static void sighandler(int sig){
1116     raise(SIGTERM);
1117 }
1118 int foo(void){
1119     $code
1120 }
1121 int (*func_ptr)(void) = foo;
1122 int main(void){
1123     signal(SIGILL, sighandler);
1124     signal(SIGFPE, sighandler);
1125     signal(SIGSEGV, sighandler);
1126 #ifdef SIGBUS
1127     signal(SIGBUS, sighandler);
1128 #endif
1129     return func_ptr();
1130 }
1131 EOF
1132 }
1133
1134 check_type(){
1135     log check_type "$@"
1136     headers=$1
1137     type=$2
1138     shift 2
1139     disable_safe "$type"
1140     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1141 }
1142
1143 check_struct(){
1144     log check_struct "$@"
1145     headers=$1
1146     struct=$2
1147     member=$3
1148     shift 3
1149     disable_safe "${struct}_${member}"
1150     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1151         enable_safe "${struct}_${member}"
1152 }
1153
1154 check_builtin(){
1155     log check_builtin "$@"
1156     name=$1
1157     headers=$2
1158     builtin=$3
1159     shift 3
1160     disable "$name"
1161     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1162 }
1163
1164 check_compile_assert(){
1165     log check_compile_assert "$@"
1166     name=$1
1167     headers=$2
1168     condition=$3
1169     shift 3
1170     disable "$name"
1171     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1172 }
1173
1174 require(){
1175     name="$1"
1176     header="$2"
1177     func="$3"
1178     shift 3
1179     check_lib $header $func "$@" || die "ERROR: $name not found"
1180 }
1181
1182 require2(){
1183     name="$1"
1184     headers="$2"
1185     func="$3"
1186     shift 3
1187     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1188 }
1189
1190 require_cpp(){
1191     name="$1"
1192     headers="$2"
1193     classes="$3"
1194     shift 3
1195     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1196 }
1197
1198 require_pkg_config(){
1199     pkg="$1"
1200     check_pkg_config "$@" || die "ERROR: $pkg not found"
1201     add_cflags    $(get_safe ${pkg}_cflags)
1202     add_extralibs $(get_safe ${pkg}_libs)
1203 }
1204
1205 require_libfreetype(){
1206     log require_libfreetype "$@"
1207     pkg="freetype2"
1208     check_cmd $pkg_config --exists --print-errors $pkg \
1209       || die "ERROR: $pkg not found"
1210     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1211     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1212     {
1213         echo "#include <ft2build.h>"
1214         echo "#include FT_FREETYPE_H"
1215         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1216         echo "int main(void) { return 0; }"
1217     } | check_ld "cc" $pkg_cflags $pkg_libs \
1218       && set_safe ${pkg}_cflags $pkg_cflags \
1219       && set_safe ${pkg}_libs   $pkg_libs \
1220       || die "ERROR: $pkg not found"
1221     add_cflags    $(get_safe ${pkg}_cflags)
1222     add_extralibs $(get_safe ${pkg}_libs)
1223 }
1224
1225 hostcc_e(){
1226     eval printf '%s\\n' $HOSTCC_E
1227 }
1228
1229 hostcc_o(){
1230     eval printf '%s\\n' $HOSTCC_O
1231 }
1232
1233 check_host_cc(){
1234     log check_host_cc "$@"
1235     cat > $TMPC
1236     log_file $TMPC
1237     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1238 }
1239
1240 check_host_cpp(){
1241     log check_host_cpp "$@"
1242     cat > $TMPC
1243     log_file $TMPC
1244     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1245 }
1246
1247 check_host_cppflags(){
1248     log check_host_cppflags "$@"
1249     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1250 int x;
1251 EOF
1252 }
1253
1254 check_host_cflags(){
1255     log check_host_cflags "$@"
1256     set -- $($host_cflags_filter "$@")
1257     check_host_cc "$@" <<EOF && append host_cflags "$@"
1258 int x;
1259 EOF
1260 }
1261
1262 check_host_cpp_condition(){
1263     log check_host_cpp_condition "$@"
1264     header=$1
1265     condition=$2
1266     shift 2
1267     check_host_cpp "$@" <<EOF
1268 #include <$header>
1269 #if !($condition)
1270 #error "unsatisfied condition: $condition"
1271 #endif
1272 EOF
1273 }
1274
1275 apply(){
1276     file=$1
1277     shift
1278     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1279 }
1280
1281 cp_if_changed(){
1282     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1283     mkdir -p "$(dirname $2)"
1284     $cp_f "$1" "$2"
1285 }
1286
1287 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1288 # system-dependent things.
1289
1290 COMPONENT_LIST="
1291     bsfs
1292     decoders
1293     demuxers
1294     encoders
1295     filters
1296     hwaccels
1297     indevs
1298     muxers
1299     outdevs
1300     parsers
1301     protocols
1302 "
1303
1304 EXAMPLE_LIST="
1305     avio_reading_example
1306     decoding_encoding_example
1307     demuxing_decoding_example
1308     filter_audio_example
1309     filtering_audio_example
1310     filtering_video_example
1311     metadata_example
1312     muxing_example
1313     remuxing_example
1314     resampling_audio_example
1315     scaling_video_example
1316     transcode_aac_example
1317     transcoding_example
1318 "
1319
1320 EXTERNAL_LIBRARY_LIST="
1321     avisynth
1322     bzlib
1323     crystalhd
1324     decklink
1325     frei0r
1326     gnutls
1327     iconv
1328     ladspa
1329     libaacplus
1330     libass
1331     libbluray
1332     libbs2b
1333     libcaca
1334     libcdio
1335     libcelt
1336     libdc1394
1337     libfaac
1338     libfdk_aac
1339     libflite
1340     libfontconfig
1341     libfreetype
1342     libfribidi
1343     libgme
1344     libgsm
1345     libiec61883
1346     libilbc
1347     libmodplug
1348     libmp3lame
1349     libnut
1350     libopencore_amrnb
1351     libopencore_amrwb
1352     libopencv
1353     libopenjpeg
1354     libopus
1355     libpulse
1356     libquvi
1357     librtmp
1358     libschroedinger
1359     libshine
1360     libsmbclient
1361     libsoxr
1362     libspeex
1363     libssh
1364     libstagefright_h264
1365     libtheora
1366     libtwolame
1367     libutvideo
1368     libv4l2
1369     libvidstab
1370     libvo_aacenc
1371     libvo_amrwbenc
1372     libvorbis
1373     libvpx
1374     libwavpack
1375     libwebp
1376     libx264
1377     libx265
1378     libxavs
1379     libxvid
1380     libzmq
1381     libzvbi
1382     openal
1383     opencl
1384     opengl
1385     openssl
1386     x11grab
1387     xlib
1388     zlib
1389 "
1390
1391 DOCUMENT_LIST="
1392     doc
1393     htmlpages
1394     manpages
1395     podpages
1396     txtpages
1397 "
1398
1399 FEATURE_LIST="
1400     ftrapv
1401     gray
1402     hardcoded_tables
1403     runtime_cpudetect
1404     safe_bitstream_reader
1405     shared
1406     small
1407     sram
1408     static
1409     swscale_alpha
1410 "
1411
1412 HWACCEL_LIST="
1413     dxva2
1414     vaapi
1415     vda
1416     vdpau
1417     xvmc
1418 "
1419
1420 LIBRARY_LIST="
1421     avcodec
1422     avdevice
1423     avfilter
1424     avformat
1425     avresample
1426     avutil
1427     postproc
1428     swresample
1429     swscale
1430 "
1431
1432 LICENSE_LIST="
1433     gpl
1434     nonfree
1435     version3
1436 "
1437
1438 PROGRAM_LIST="
1439     ffplay
1440     ffprobe
1441     ffserver
1442     ffmpeg
1443 "
1444
1445 SUBSYSTEM_LIST="
1446     dct
1447     dwt
1448     error_resilience
1449     fast_unaligned
1450     fft
1451     lsp
1452     lzo
1453     mdct
1454     network
1455     rdft
1456 "
1457
1458 CONFIG_LIST="
1459     $COMPONENT_LIST
1460     $DOCUMENT_LIST
1461     $EXAMPLE_LIST
1462     $EXTERNAL_LIBRARY_LIST
1463     $FEATURE_LIST
1464     $HWACCEL_LIST
1465     $LICENSE_LIST
1466     $LIBRARY_LIST
1467     $PROGRAM_LIST
1468     $SUBSYSTEM_LIST
1469     fontconfig
1470     incompatible_libav_abi
1471     memalign_hack
1472     memory_poisoning
1473     neon_clobber_test
1474     pic
1475     pod2man
1476     raise_major
1477     thumb
1478     xmm_clobber_test
1479 "
1480
1481 THREADS_LIST="
1482     pthreads
1483     os2threads
1484     w32threads
1485 "
1486
1487 ATOMICS_LIST="
1488     atomics_gcc
1489     atomics_suncc
1490     atomics_win32
1491 "
1492
1493 ARCH_LIST="
1494     aarch64
1495     alpha
1496     arm
1497     avr32
1498     avr32_ap
1499     avr32_uc
1500     bfin
1501     ia64
1502     m68k
1503     mips
1504     mips64
1505     parisc
1506     ppc
1507     ppc64
1508     s390
1509     sh4
1510     sparc
1511     sparc64
1512     tilegx
1513     tilepro
1514     tomi
1515     x86
1516     x86_32
1517     x86_64
1518 "
1519
1520 ARCH_EXT_LIST_ARM="
1521     armv5te
1522     armv6
1523     armv6t2
1524     armv8
1525     neon
1526     vfp
1527     vfpv3
1528 "
1529
1530 ARCH_EXT_LIST_MIPS="
1531     mipsfpu
1532     mips32r2
1533     mipsdspr1
1534     mipsdspr2
1535 "
1536
1537 ARCH_EXT_LIST_X86_SIMD="
1538     amd3dnow
1539     amd3dnowext
1540     avx
1541     avx2
1542     fma3
1543     fma4
1544     mmx
1545     mmxext
1546     sse
1547     sse2
1548     sse3
1549     sse4
1550     sse42
1551     ssse3
1552     xop
1553 "
1554
1555 ARCH_EXT_LIST_PPC="
1556     altivec
1557     dcbzl
1558     ldbrx
1559     ppc4xx
1560     vsx
1561 "
1562
1563 ARCH_EXT_LIST_X86="
1564     $ARCH_EXT_LIST_X86_SIMD
1565     cpunop
1566     i686
1567 "
1568
1569 ARCH_EXT_LIST="
1570     $ARCH_EXT_LIST_ARM
1571     $ARCH_EXT_LIST_PPC
1572     $ARCH_EXT_LIST_X86
1573     $ARCH_EXT_LIST_MIPS
1574     loongson
1575 "
1576
1577 ARCH_FEATURES="
1578     aligned_stack
1579     fast_64bit
1580     fast_clz
1581     fast_cmov
1582     local_aligned_8
1583     local_aligned_16
1584     local_aligned_32
1585 "
1586
1587 BUILTIN_LIST="
1588     atomic_cas_ptr
1589     machine_rw_barrier
1590     MemoryBarrier
1591     mm_empty
1592     rdtsc
1593     sarestart
1594     sync_val_compare_and_swap
1595 "
1596 HAVE_LIST_CMDLINE="
1597     inline_asm
1598     symver
1599     yasm
1600 "
1601
1602 HAVE_LIST_PUB="
1603     bigendian
1604     fast_unaligned
1605     incompatible_libav_abi
1606 "
1607
1608 HEADERS_LIST="
1609     alsa_asoundlib_h
1610     altivec_h
1611     arpa_inet_h
1612     asm_types_h
1613     cdio_paranoia_h
1614     cdio_paranoia_paranoia_h
1615     CL_cl_h
1616     dev_bktr_ioctl_bt848_h
1617     dev_bktr_ioctl_meteor_h
1618     dev_ic_bt8xx_h
1619     dev_video_bktr_ioctl_bt848_h
1620     dev_video_meteor_ioctl_meteor_h
1621     direct_h
1622     dlfcn_h
1623     dxva_h
1624     ES2_gl_h
1625     gsm_h
1626     io_h
1627     mach_mach_time_h
1628     machine_ioctl_bt848_h
1629     machine_ioctl_meteor_h
1630     malloc_h
1631     openjpeg_1_5_openjpeg_h
1632     OpenGL_gl3_h
1633     poll_h
1634     sndio_h
1635     soundcard_h
1636     sys_mman_h
1637     sys_param_h
1638     sys_resource_h
1639     sys_select_h
1640     sys_soundcard_h
1641     sys_time_h
1642     sys_un_h
1643     sys_videoio_h
1644     termios_h
1645     unistd_h
1646     windows_h
1647     winsock2_h
1648 "
1649
1650 INTRINSICS_LIST="
1651     intrinsics_neon
1652 "
1653
1654 MATH_FUNCS="
1655     atanf
1656     atan2f
1657     cbrt
1658     cbrtf
1659     cosf
1660     exp2
1661     exp2f
1662     expf
1663     fminf
1664     isinf
1665     isnan
1666     ldexpf
1667     llrint
1668     llrintf
1669     log2
1670     log2f
1671     log10f
1672     lrint
1673     lrintf
1674     powf
1675     rint
1676     round
1677     roundf
1678     sinf
1679     trunc
1680     truncf
1681 "
1682
1683 SYSTEM_FUNCS="
1684     access
1685     aligned_malloc
1686     clock_gettime
1687     closesocket
1688     CommandLineToArgvW
1689     CoTaskMemFree
1690     CryptGenRandom
1691     dlopen
1692     fcntl
1693     flt_lim
1694     fork
1695     getaddrinfo
1696     gethrtime
1697     getopt
1698     GetProcessAffinityMask
1699     GetProcessMemoryInfo
1700     GetProcessTimes
1701     getrusage
1702     getservbyport
1703     GetSystemTimeAsFileTime
1704     gettimeofday
1705     glob
1706     glXGetProcAddress
1707     inet_aton
1708     isatty
1709     jack_port_get_latency_range
1710     kbhit
1711     localtime_r
1712     lzo1x_999_compress
1713     mach_absolute_time
1714     MapViewOfFile
1715     memalign
1716     mkstemp
1717     mmap
1718     mprotect
1719     nanosleep
1720     PeekNamedPipe
1721     posix_memalign
1722     pthread_cancel
1723     sched_getaffinity
1724     SetConsoleTextAttribute
1725     setmode
1726     setrlimit
1727     Sleep
1728     strerror_r
1729     sysconf
1730     sysctl
1731     usleep
1732     VirtualAlloc
1733     wglGetProcAddress
1734 "
1735
1736 TOOLCHAIN_FEATURES="
1737     as_dn_directive
1738     as_func
1739     asm_mod_q
1740     attribute_may_alias
1741     attribute_packed
1742     ebp_available
1743     ebx_available
1744     gnu_as
1745     gnu_windres
1746     ibm_asm
1747     inline_asm_labels
1748     inline_asm_nonlocal_labels
1749     inline_asm_direct_symbol_refs
1750     pragma_deprecated
1751     rsync_contimeout
1752     symver_asm_label
1753     symver_gnu_asm
1754     vfp_args
1755     xform_asm
1756     xmm_clobbers
1757 "
1758
1759 TYPES_LIST="
1760     socklen_t
1761     struct_addrinfo
1762     struct_group_source_req
1763     struct_ip_mreq_source
1764     struct_ipv6_mreq
1765     struct_pollfd
1766     struct_rusage_ru_maxrss
1767     struct_sctp_event_subscribe
1768     struct_sockaddr_in6
1769     struct_sockaddr_sa_len
1770     struct_sockaddr_storage
1771     struct_stat_st_mtim_tv_nsec
1772     struct_v4l2_frmivalenum_discrete
1773 "
1774
1775 HAVE_LIST="
1776     $ARCH_EXT_LIST
1777     $(add_suffix _external $ARCH_EXT_LIST)
1778     $(add_suffix _inline   $ARCH_EXT_LIST)
1779     $ARCH_FEATURES
1780     $ATOMICS_LIST
1781     $BUILTIN_LIST
1782     $HAVE_LIST_CMDLINE
1783     $HAVE_LIST_PUB
1784     $HEADERS_LIST
1785     $INTRINSICS_LIST
1786     $MATH_FUNCS
1787     $SYSTEM_FUNCS
1788     $THREADS_LIST
1789     $TOOLCHAIN_FEATURES
1790     $TYPES_LIST
1791     atomics_native
1792     dos_paths
1793     dxva2api_cobj
1794     dxva2_lib
1795     libc_msvcrt
1796     libdc1394_1
1797     libdc1394_2
1798     makeinfo
1799     perl
1800     pod2man
1801     sdl
1802     texi2html
1803     threads
1804     vdpau_x11
1805     xlib
1806 "
1807
1808 # options emitted with CONFIG_ prefix but not available on the command line
1809 CONFIG_EXTRA="
1810     aandcttables
1811     ac3dsp
1812     audio_frame_queue
1813     audiodsp
1814     blockdsp
1815     bswapdsp
1816     cabac
1817     dvprofile
1818     exif
1819     fdctdsp
1820     frame_thread_encoder
1821     gcrypt
1822     golomb
1823     gplv3
1824     h263dsp
1825     h264chroma
1826     h264dsp
1827     h264pred
1828     h264qpel
1829     hpeldsp
1830     huffman
1831     huffyuvdsp
1832     huffyuvencdsp
1833     idctdsp
1834     iirfilter
1835     intrax8
1836     lgplv3
1837     llauddsp
1838     llviddsp
1839     lpc
1840     me_cmp
1841     mpeg_er
1842     mpegaudio
1843     mpegaudiodsp
1844     mpegvideo
1845     mpegvideoenc
1846     nettle
1847     pixblockdsp
1848     qpeldsp
1849     rangecoder
1850     riffdec
1851     riffenc
1852     rtpdec
1853     rtpenc_chain
1854     sinewin
1855     tpeldsp
1856     videodsp
1857     vp3dsp
1858 "
1859
1860 CMDLINE_SELECT="
1861     $ARCH_EXT_LIST
1862     $CONFIG_LIST
1863     $HAVE_LIST_CMDLINE
1864     $THREADS_LIST
1865     asm
1866     cross_compile
1867     debug
1868     extra_warnings
1869     logging
1870     lto
1871     optimizations
1872     rpath
1873     stripping
1874 "
1875
1876 PATHS_LIST="
1877     bindir
1878     datadir
1879     docdir
1880     incdir
1881     libdir
1882     mandir
1883     prefix
1884     shlibdir
1885 "
1886
1887 CMDLINE_SET="
1888     $PATHS_LIST
1889     ar
1890     arch
1891     as
1892     assert_level
1893     build_suffix
1894     cc
1895     cpu
1896     cross_prefix
1897     cxx
1898     dep_cc
1899     doxygen
1900     extra_version
1901     gas
1902     host_cc
1903     host_cflags
1904     host_ld
1905     host_ldflags
1906     host_libs
1907     host_os
1908     install
1909     ld
1910     logfile
1911     malloc_prefix
1912     nm
1913     optflags
1914     pkg_config
1915     pkg_config_flags
1916     progs_suffix
1917     random_seed
1918     ranlib
1919     samples
1920     strip
1921     sws_max_filter_size
1922     sysinclude
1923     sysroot
1924     target_exec
1925     target_os
1926     target_path
1927     target_samples
1928     tempprefix
1929     toolchain
1930     valgrind
1931     yasmexe
1932 "
1933
1934 CMDLINE_APPEND="
1935     extra_cflags
1936     extra_cxxflags
1937     host_cppflags
1938 "
1939
1940 # code dependency declarations
1941
1942 # architecture extensions
1943
1944 armv5te_deps="arm"
1945 armv6_deps="arm"
1946 armv6t2_deps="arm"
1947 armv8_deps="aarch64"
1948 neon_deps_any="aarch64 arm"
1949 intrinsics_neon_deps="neon"
1950 vfp_deps_any="aarch64 arm"
1951 vfpv3_deps="vfp"
1952
1953 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1954
1955 mipsfpu_deps="mips"
1956 mips32r2_deps="mips"
1957 mipsdspr1_deps="mips"
1958 mipsdspr2_deps="mips"
1959
1960 altivec_deps="ppc"
1961 ppc4xx_deps="ppc"
1962 vsx_deps="ppc"
1963
1964 cpunop_deps="i686"
1965 x86_64_select="i686"
1966 x86_64_suggest="fast_cmov"
1967
1968 amd3dnow_deps="mmx"
1969 amd3dnowext_deps="amd3dnow"
1970 i686_deps="x86"
1971 mmx_deps="x86"
1972 mmxext_deps="mmx"
1973 sse_deps="mmxext"
1974 sse2_deps="sse"
1975 sse3_deps="sse2"
1976 ssse3_deps="sse3"
1977 sse4_deps="ssse3"
1978 sse42_deps="sse4"
1979 avx_deps="sse42"
1980 xop_deps="avx"
1981 fma3_deps="avx"
1982 fma4_deps="avx"
1983 avx2_deps="avx"
1984
1985 mmx_external_deps="yasm"
1986 mmx_inline_deps="inline_asm"
1987 mmx_suggest="mmx_external mmx_inline"
1988
1989 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1990     eval dep=\$${ext}_deps
1991     eval ${ext}_external_deps='"${dep}_external"'
1992     eval ${ext}_inline_deps='"${dep}_inline"'
1993     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1994 done
1995
1996 aligned_stack_if_any="aarch64 ppc x86"
1997 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1998 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1999 fast_unaligned_if_any="aarch64 ppc x86"
2000
2001 need_memalign="altivec neon sse"
2002
2003 # system capabilities
2004
2005 symver_if_any="symver_asm_label symver_gnu_asm"
2006
2007 # threading support
2008 atomics_gcc_if="sync_val_compare_and_swap"
2009 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2010 atomics_win32_if="MemoryBarrier"
2011 atomics_native_if_any="$ATOMICS_LIST"
2012 w32threads_deps="atomics_native"
2013 threads_if_any="$THREADS_LIST"
2014
2015 # subsystems
2016 dct_select="rdft"
2017 error_resilience_select="me_cmp"
2018 frame_thread_encoder_deps="encoders threads"
2019 intrax8_select="error_resilience"
2020 mdct_select="fft"
2021 rdft_select="fft"
2022 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2023 mpeg_er_select="error_resilience"
2024 mpegaudio_select="mpegaudiodsp"
2025 mpegaudiodsp_select="dct"
2026 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp videodsp"
2027 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2028
2029 # decoders / encoders
2030 aac_decoder_select="mdct sinewin"
2031 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2032 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2033 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2034 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2035 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2036 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2037 aic_decoder_select="golomb idctdsp"
2038 alac_encoder_select="lpc"
2039 als_decoder_select="bswapdsp"
2040 amrnb_decoder_select="lsp"
2041 amrwb_decoder_select="lsp"
2042 amv_decoder_select="sp5x_decoder exif"
2043 amv_encoder_select="aandcttables mpegvideoenc"
2044 ape_decoder_select="bswapdsp llauddsp"
2045 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2046 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2047 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2048 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2049 atrac1_decoder_select="mdct sinewin"
2050 atrac3_decoder_select="mdct"
2051 atrac3p_decoder_select="mdct sinewin"
2052 avrn_decoder_select="exif"
2053 bink_decoder_select="blockdsp hpeldsp"
2054 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
2055 binkaudio_rdft_decoder_select="mdct rdft sinewin"
2056 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2057 cllc_decoder_select="bswapdsp"
2058 comfortnoise_encoder_select="lpc"
2059 cook_decoder_select="audiodsp mdct sinewin"
2060 cscd_decoder_select="lzo"
2061 cscd_decoder_suggest="zlib"
2062 dca_decoder_select="mdct"
2063 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2064 dnxhd_decoder_select="blockdsp idctdsp"
2065 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2066 dvvideo_decoder_select="dvprofile idctdsp"
2067 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2068 dxa_decoder_select="zlib"
2069 eac3_decoder_select="ac3_decoder"
2070 eac3_encoder_select="ac3_encoder"
2071 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2072 eatgq_decoder_select="aandcttables"
2073 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2074 exr_decoder_select="zlib"
2075 ffv1_decoder_select="golomb rangecoder"
2076 ffv1_encoder_select="rangecoder"
2077 ffvhuff_decoder_select="huffyuv_decoder"
2078 ffvhuff_encoder_select="huffyuv_encoder"
2079 fic_decoder_select="golomb"
2080 flac_decoder_select="golomb"
2081 flac_encoder_select="bswapdsp golomb lpc"
2082 flashsv_decoder_select="zlib"
2083 flashsv_encoder_select="zlib"
2084 flashsv2_encoder_select="zlib"
2085 flashsv2_decoder_select="zlib"
2086 flv_decoder_select="h263_decoder"
2087 flv_encoder_select="h263_encoder"
2088 fourxm_decoder_select="blockdsp bswapdsp"
2089 fraps_decoder_select="bswapdsp huffman"
2090 g2m_decoder_select="blockdsp idctdsp zlib"
2091 g729_decoder_select="audiodsp"
2092 h261_decoder_select="mpeg_er mpegvideo"
2093 h261_encoder_select="aandcttables mpegvideoenc"
2094 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2095 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2096 h263i_decoder_select="h263_decoder"
2097 h263p_encoder_select="h263_encoder"
2098 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2099 h264_decoder_suggest="error_resilience"
2100 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2101 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2102 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2103 iac_decoder_select="imc_decoder"
2104 imc_decoder_select="bswapdsp fft mdct sinewin"
2105 indeo3_decoder_select="hpeldsp"
2106 interplay_video_decoder_select="hpeldsp"
2107 jpegls_decoder_select="golomb mjpeg_decoder"
2108 jpegls_encoder_select="golomb"
2109 jv_decoder_select="blockdsp"
2110 lagarith_decoder_select="huffyuvdsp"
2111 ljpeg_encoder_select="aandcttables idctdsp"
2112 loco_decoder_select="golomb"
2113 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2114 metasound_decoder_select="lsp mdct sinewin"
2115 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2116 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp"
2117 mjpeg_encoder_select="aandcttables mpegvideoenc"
2118 mjpegb_decoder_select="mjpeg_decoder"
2119 mlp_decoder_select="mlp_parser"
2120 motionpixels_decoder_select="bswapdsp"
2121 mp1_decoder_select="mpegaudio"
2122 mp1float_decoder_select="mpegaudio"
2123 mp2_decoder_select="mpegaudio"
2124 mp2float_decoder_select="mpegaudio"
2125 mp3_decoder_select="mpegaudio"
2126 mp3adu_decoder_select="mpegaudio"
2127 mp3adufloat_decoder_select="mpegaudio"
2128 mp3float_decoder_select="mpegaudio"
2129 mp3on4_decoder_select="mpegaudio"
2130 mp3on4float_decoder_select="mpegaudio"
2131 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2132 mpc8_decoder_select="mpegaudiodsp"
2133 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2134 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2135 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2136 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2137 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2138 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2139 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2140 mpeg4_encoder_select="h263_encoder"
2141 msmpeg4v1_decoder_select="h263_decoder"
2142 msmpeg4v2_decoder_select="h263_decoder"
2143 msmpeg4v2_encoder_select="h263_encoder"
2144 msmpeg4v3_decoder_select="h263_decoder"
2145 msmpeg4v3_encoder_select="h263_encoder"
2146 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2147 mxpeg_decoder_select="mjpeg_decoder"
2148 nellymoser_decoder_select="mdct sinewin"
2149 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2150 nuv_decoder_select="idctdsp lzo"
2151 on2avc_decoder_select="mdct"
2152 opus_decoder_deps="swresample"
2153 png_decoder_select="zlib"
2154 png_encoder_select="huffyuvencdsp zlib"
2155 prores_decoder_select="blockdsp idctdsp"
2156 prores_encoder_select="fdctdsp"
2157 qcelp_decoder_select="lsp"
2158 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2159 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2160 ra_144_decoder_select="audiodsp"
2161 ralf_decoder_select="golomb"
2162 rawvideo_decoder_select="bswapdsp"
2163 rtjpeg_decoder_select="me_cmp"
2164 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2165 rv10_encoder_select="h263_encoder"
2166 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2167 rv20_encoder_select="h263_encoder"
2168 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2169 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2170 shorten_decoder_select="golomb"
2171 sipr_decoder_select="lsp"
2172 snow_decoder_select="dwt h264qpel hpeldsp rangecoder"
2173 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2174 sonic_decoder_select="golomb rangecoder"
2175 sonic_encoder_select="golomb rangecoder"
2176 sonic_ls_encoder_select="golomb rangecoder"
2177 sp5x_decoder_select="mjpeg_decoder"
2178 svq1_decoder_select="hpeldsp"
2179 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2180 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2181 svq3_decoder_suggest="zlib"
2182 tak_decoder_select="audiodsp"
2183 theora_decoder_select="vp3_decoder"
2184 thp_decoder_select="mjpeg_decoder"
2185 tiff_decoder_suggest="zlib"
2186 tiff_encoder_suggest="zlib"
2187 truehd_decoder_select="mlp_parser"
2188 truemotion2_decoder_select="bswapdsp"
2189 truespeech_decoder_select="bswapdsp"
2190 tscc_decoder_select="zlib"
2191 twinvq_decoder_select="mdct lsp sinewin"
2192 utvideo_decoder_select="bswapdsp"
2193 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2194 vble_decoder_select="huffyuvdsp"
2195 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp"
2196 vc1image_decoder_select="vc1_decoder"
2197 vorbis_decoder_select="mdct"
2198 vorbis_encoder_select="mdct"
2199 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2200 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2201 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2202 vp6a_decoder_select="vp6_decoder"
2203 vp6f_decoder_select="vp6_decoder"
2204 vp7_decoder_select="h264pred videodsp"
2205 vp8_decoder_select="h264pred videodsp"
2206 vp9_decoder_select="videodsp vp9_parser"
2207 webp_decoder_select="vp8_decoder"
2208 wmalossless_decoder_select="llauddsp"
2209 wmapro_decoder_select="mdct sinewin"
2210 wmav1_decoder_select="mdct sinewin"
2211 wmav1_encoder_select="mdct sinewin"
2212 wmav2_decoder_select="mdct sinewin"
2213 wmav2_encoder_select="mdct sinewin"
2214 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2215 wmv1_decoder_select="h263_decoder"
2216 wmv1_encoder_select="h263_encoder"
2217 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2218 wmv2_encoder_select="h263_encoder"
2219 wmv3_decoder_select="vc1_decoder"
2220 wmv3image_decoder_select="wmv3_decoder"
2221 zerocodec_decoder_select="zlib"
2222 zlib_decoder_select="zlib"
2223 zlib_encoder_select="zlib"
2224 zmbv_decoder_select="zlib"
2225 zmbv_encoder_select="zlib"
2226
2227 # hardware accelerators
2228 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2229 dxva2_deps="dxva2api_h"
2230 vaapi_deps="va_va_h"
2231 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2232 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2233 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2234 xvmc_deps="X11_extensions_XvMClib_h"
2235
2236 h263_vaapi_hwaccel_deps="vaapi"
2237 h263_vaapi_hwaccel_select="h263_decoder"
2238 h263_vdpau_hwaccel_deps="vdpau"
2239 h263_vdpau_hwaccel_select="h263_decoder"
2240 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2241 h264_dxva2_hwaccel_deps="dxva2"
2242 h264_dxva2_hwaccel_select="h264_decoder"
2243 h264_vaapi_hwaccel_deps="vaapi"
2244 h264_vaapi_hwaccel_select="h264_decoder"
2245 h264_vda_decoder_deps="vda"
2246 h264_vda_decoder_select="h264_decoder"
2247 h264_vda_hwaccel_deps="vda"
2248 h264_vda_hwaccel_select="h264_decoder"
2249 h264_vda_old_hwaccel_deps="vda"
2250 h264_vda_old_hwaccel_select="h264_decoder"
2251 h264_vdpau_decoder_deps="vdpau"
2252 h264_vdpau_decoder_select="h264_decoder"
2253 h264_vdpau_hwaccel_deps="vdpau"
2254 h264_vdpau_hwaccel_select="h264_decoder"
2255 mpeg_vdpau_decoder_deps="vdpau"
2256 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2257 mpeg_xvmc_hwaccel_deps="xvmc"
2258 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2259 mpeg1_vdpau_decoder_deps="vdpau"
2260 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2261 mpeg1_vdpau_hwaccel_deps="vdpau"
2262 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2263 mpeg1_xvmc_hwaccel_deps="xvmc"
2264 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2265 mpeg2_crystalhd_decoder_select="crystalhd"
2266 mpeg2_dxva2_hwaccel_deps="dxva2"
2267 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2268 mpeg2_vaapi_hwaccel_deps="vaapi"
2269 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2270 mpeg2_vdpau_hwaccel_deps="vdpau"
2271 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2272 mpeg2_xvmc_hwaccel_deps="xvmc"
2273 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2274 mpeg4_crystalhd_decoder_select="crystalhd"
2275 mpeg4_vaapi_hwaccel_deps="vaapi"
2276 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2277 mpeg4_vdpau_decoder_deps="vdpau"
2278 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2279 mpeg4_vdpau_hwaccel_deps="vdpau"
2280 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2281 msmpeg4_crystalhd_decoder_select="crystalhd"
2282 vc1_crystalhd_decoder_select="crystalhd"
2283 vc1_dxva2_hwaccel_deps="dxva2"
2284 vc1_dxva2_hwaccel_select="vc1_decoder"
2285 vc1_vaapi_hwaccel_deps="vaapi"
2286 vc1_vaapi_hwaccel_select="vc1_decoder"
2287 vc1_vdpau_decoder_deps="vdpau"
2288 vc1_vdpau_decoder_select="vc1_decoder"
2289 vc1_vdpau_hwaccel_deps="vdpau"
2290 vc1_vdpau_hwaccel_select="vc1_decoder"
2291 wmv3_crystalhd_decoder_select="crystalhd"
2292 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2293 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2294 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2295 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2296
2297 # parsers
2298 h264_parser_select="h264_decoder"
2299 hevc_parser_select="hevc_decoder"
2300 mpegvideo_parser_select="mpegvideo"
2301 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2302 vc1_parser_select="mpegvideo vc1_decoder"
2303
2304 # external libraries
2305 libaacplus_encoder_deps="libaacplus"
2306 libcelt_decoder_deps="libcelt"
2307 libfaac_encoder_deps="libfaac"
2308 libfaac_encoder_select="audio_frame_queue"
2309 libfdk_aac_decoder_deps="libfdk_aac"
2310 libfdk_aac_encoder_deps="libfdk_aac"
2311 libfdk_aac_encoder_select="audio_frame_queue"
2312 libgme_demuxer_deps="libgme"
2313 libgsm_decoder_deps="libgsm"
2314 libgsm_encoder_deps="libgsm"
2315 libgsm_ms_decoder_deps="libgsm"
2316 libgsm_ms_encoder_deps="libgsm"
2317 libilbc_decoder_deps="libilbc"
2318 libilbc_encoder_deps="libilbc"
2319 libmodplug_demuxer_deps="libmodplug"
2320 libmp3lame_encoder_deps="libmp3lame"
2321 libmp3lame_encoder_select="audio_frame_queue"
2322 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2323 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2324 libopencore_amrnb_encoder_select="audio_frame_queue"
2325 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2326 libopenjpeg_decoder_deps="libopenjpeg"
2327 libopenjpeg_encoder_deps="libopenjpeg"
2328 libopus_decoder_deps="libopus"
2329 libopus_encoder_deps="libopus"
2330 libopus_encoder_select="audio_frame_queue"
2331 libquvi_demuxer_deps="libquvi"
2332 libschroedinger_decoder_deps="libschroedinger"
2333 libschroedinger_encoder_deps="libschroedinger"
2334 libshine_encoder_deps="libshine"
2335 libshine_encoder_select="audio_frame_queue"
2336 libspeex_decoder_deps="libspeex"
2337 libspeex_encoder_deps="libspeex"
2338 libspeex_encoder_select="audio_frame_queue"
2339 libstagefright_h264_decoder_deps="libstagefright_h264"
2340 libtheora_encoder_deps="libtheora"
2341 libtwolame_encoder_deps="libtwolame"
2342 libvo_aacenc_encoder_deps="libvo_aacenc"
2343 libvo_aacenc_encoder_select="audio_frame_queue"
2344 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2345 libvorbis_decoder_deps="libvorbis"
2346 libvorbis_encoder_deps="libvorbis"
2347 libvorbis_encoder_select="audio_frame_queue"
2348 libvpx_vp8_decoder_deps="libvpx"
2349 libvpx_vp8_encoder_deps="libvpx"
2350 libvpx_vp9_decoder_deps="libvpx"
2351 libvpx_vp9_encoder_deps="libvpx"
2352 libwavpack_encoder_deps="libwavpack"
2353 libwebp_encoder_deps="libwebp"
2354 libx264_encoder_deps="libx264"
2355 libx264rgb_encoder_deps="libx264"
2356 libx265_encoder_deps="libx265"
2357 libxavs_encoder_deps="libxavs"
2358 libxvid_encoder_deps="libxvid"
2359 libutvideo_decoder_deps="libutvideo"
2360 libutvideo_encoder_deps="libutvideo"
2361 libzvbi_teletext_decoder_deps="libzvbi"
2362
2363 # demuxers / muxers
2364 ac3_demuxer_select="ac3_parser"
2365 asf_demuxer_select="riffdec"
2366 asf_muxer_select="riffenc"
2367 asf_stream_muxer_select="asf_muxer"
2368 avi_demuxer_select="riffdec exif"
2369 avi_muxer_select="riffenc"
2370 avisynth_demuxer_deps="avisynth"
2371 avisynth_demuxer_select="riffdec"
2372 caf_demuxer_select="riffdec"
2373 dirac_demuxer_select="dirac_parser"
2374 dts_demuxer_select="dca_parser"
2375 dtshd_demuxer_select="dca_parser"
2376 dv_demuxer_select="dvprofile"
2377 dv_muxer_select="dvprofile"
2378 dxa_demuxer_select="riffdec"
2379 eac3_demuxer_select="ac3_parser"
2380 f4v_muxer_select="mov_muxer"
2381 flac_demuxer_select="flac_parser"
2382 hds_muxer_select="flv_muxer"
2383 hls_muxer_select="mpegts_muxer"
2384 image2_alias_pix_demuxer_select="image2_demuxer"
2385 image2_brender_pix_demuxer_select="image2_demuxer"
2386 ipod_muxer_select="mov_muxer"
2387 ismv_muxer_select="mov_muxer"
2388 libnut_demuxer_deps="libnut"
2389 libnut_muxer_deps="libnut"
2390 matroska_audio_muxer_select="matroska_muxer"
2391 matroska_demuxer_select="riffdec"
2392 matroska_demuxer_suggest="bzlib lzo zlib"
2393 matroska_muxer_select="riffenc"
2394 mmf_muxer_select="riffenc"
2395 mov_demuxer_select="riffdec"
2396 mov_demuxer_suggest="zlib"
2397 mov_muxer_select="riffenc rtpenc_chain"
2398 mp3_demuxer_select="mpegaudio_parser"
2399 mp4_muxer_select="mov_muxer"
2400 mpegts_muxer_select="adts_muxer latm_muxer"
2401 mpegtsraw_demuxer_select="mpegts_demuxer"
2402 mxf_d10_muxer_select="mxf_muxer"
2403 nut_muxer_select="riffenc"
2404 nuv_demuxer_select="riffdec"
2405 ogg_demuxer_select="golomb"
2406 psp_muxer_select="mov_muxer"
2407 rtp_demuxer_select="sdp_demuxer"
2408 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2409 rtsp_demuxer_select="http_protocol rtpdec"
2410 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2411 sap_demuxer_select="sdp_demuxer"
2412 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2413 sdp_demuxer_select="rtpdec"
2414 smoothstreaming_muxer_select="ismv_muxer"
2415 spdif_muxer_select="aac_parser"
2416 tak_demuxer_select="tak_parser"
2417 tg2_muxer_select="mov_muxer"
2418 tgp_muxer_select="mov_muxer"
2419 vobsub_demuxer_select="mpegps_demuxer"
2420 w64_demuxer_select="wav_demuxer"
2421 w64_muxer_select="wav_muxer"
2422 wav_demuxer_select="riffdec"
2423 wav_muxer_select="riffenc"
2424 webm_muxer_select="riffenc"
2425 wtv_demuxer_select="riffdec"
2426 wtv_muxer_select="riffenc"
2427 xmv_demuxer_select="riffdec"
2428 xwma_demuxer_select="riffdec"
2429
2430 # indevs / outdevs
2431 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2432 alsa_outdev_deps="alsa_asoundlib_h"
2433 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2434 avfoundation_indev_select="avfoundation"
2435 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2436 caca_outdev_deps="libcaca"
2437 decklink_outdev_deps="decklink pthreads"
2438 decklink_outdev_extralibs="-lstdc++"
2439 dshow_indev_deps="IBaseFilter"
2440 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2441 dv1394_indev_deps="dv1394"
2442 dv1394_indev_select="dv_demuxer"
2443 fbdev_indev_deps="linux_fb_h"
2444 fbdev_outdev_deps="linux_fb_h"
2445 gdigrab_indev_deps="CreateDIBSection"
2446 gdigrab_indev_extralibs="-lgdi32"
2447 gdigrab_indev_select="bmp_decoder"
2448 iec61883_indev_deps="libiec61883"
2449 jack_indev_deps="jack_jack_h sem_timedwait"
2450 lavfi_indev_deps="avfilter"
2451 libcdio_indev_deps="libcdio"
2452 libdc1394_indev_deps="libdc1394"
2453 libv4l2_indev_deps="libv4l2"
2454 openal_indev_deps="openal"
2455 opengl_outdev_deps="opengl"
2456 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2457 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2458 pulse_indev_deps="libpulse"
2459 pulse_outdev_deps="libpulse"
2460 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2461 qtkit_indev_select="qtkit"
2462 sdl_outdev_deps="sdl"
2463 sndio_indev_deps="sndio_h"
2464 sndio_outdev_deps="sndio_h"
2465 v4l_indev_deps="linux_videodev_h"
2466 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2467 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2468 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2469 vfwcap_indev_extralibs="-lavicap32"
2470 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2471 xv_outdev_extralibs="-lXv -lX11 -lXext"
2472 x11grab_indev_deps="x11grab"
2473
2474 # protocols
2475 bluray_protocol_deps="libbluray"
2476 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2477 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2478 ffrtmpcrypt_protocol_select="tcp_protocol"
2479 ffrtmphttp_protocol_deps="!librtmp_protocol"
2480 ffrtmphttp_protocol_select="http_protocol"
2481 ftp_protocol_select="tcp_protocol"
2482 gopher_protocol_select="network"
2483 http_protocol_select="tcp_protocol"
2484 httpproxy_protocol_select="tcp_protocol"
2485 https_protocol_select="tls_protocol"
2486 librtmp_protocol_deps="librtmp"
2487 librtmpe_protocol_deps="librtmp"
2488 librtmps_protocol_deps="librtmp"
2489 librtmpt_protocol_deps="librtmp"
2490 librtmpte_protocol_deps="librtmp"
2491 libsmbclient_protocol_deps="libsmbclient gplv3"
2492 libssh_protocol_deps="libssh"
2493 mmsh_protocol_select="http_protocol"
2494 mmst_protocol_select="network"
2495 rtmp_protocol_deps="!librtmp_protocol"
2496 rtmp_protocol_select="tcp_protocol"
2497 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2498 rtmps_protocol_deps="!librtmp_protocol"
2499 rtmps_protocol_select="tls_protocol"
2500 rtmpt_protocol_select="ffrtmphttp_protocol"
2501 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2502 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2503 rtp_protocol_select="udp_protocol"
2504 sctp_protocol_deps="struct_sctp_event_subscribe"
2505 sctp_protocol_select="network"
2506 srtp_protocol_select="rtp_protocol"
2507 tcp_protocol_select="network"
2508 tls_protocol_deps_any="openssl gnutls"
2509 tls_protocol_select="tcp_protocol"
2510 udp_protocol_select="network"
2511 unix_protocol_deps="sys_un_h"
2512 unix_protocol_select="network"
2513
2514 # filters
2515 aconvert_filter_deps="swresample"
2516 amovie_filter_deps="avcodec avformat"
2517 aresample_filter_deps="swresample"
2518 ass_filter_deps="libass"
2519 asyncts_filter_deps="avresample"
2520 atempo_filter_deps="avcodec"
2521 atempo_filter_select="rdft"
2522 azmq_filter_deps="libzmq"
2523 blackframe_filter_deps="gpl"
2524 boxblur_filter_deps="gpl"
2525 bs2b_filter_deps="libbs2b"
2526 colormatrix_filter_deps="gpl"
2527 cropdetect_filter_deps="gpl"
2528 dctdnoiz_filter_deps="avcodec"
2529 dctdnoiz_filter_select="dct"
2530 delogo_filter_deps="gpl"
2531 deshake_filter_deps="avcodec"
2532 deshake_filter_select="me_cmp"
2533 drawtext_filter_deps="libfreetype"
2534 ebur128_filter_deps="gpl"
2535 flite_filter_deps="libflite"
2536 frei0r_filter_deps="frei0r dlopen"
2537 frei0r_filter_extralibs='$ldl'
2538 frei0r_src_filter_deps="frei0r dlopen"
2539 frei0r_src_filter_extralibs='$ldl'
2540 geq_filter_deps="gpl"
2541 histeq_filter_deps="gpl"
2542 hqdn3d_filter_deps="gpl"
2543 interlace_filter_deps="gpl"
2544 kerndeint_filter_deps="gpl"
2545 ladspa_filter_deps="ladspa dlopen"
2546 ladspa_filter_extralibs='$ldl'
2547 mcdeint_filter_deps="avcodec gpl"
2548 movie_filter_deps="avcodec avformat"
2549 mp_filter_deps="gpl avcodec swscale inline_asm"
2550 mpdecimate_filter_deps="gpl avcodec"
2551 mpdecimate_filter_select="me_cmp pixblockdsp"
2552 mptestsrc_filter_deps="gpl"
2553 negate_filter_deps="lut_filter"
2554 perspective_filter_deps="gpl"
2555 ocv_filter_deps="libopencv"
2556 owdenoise_filter_deps="gpl"
2557 pan_filter_deps="swresample"
2558 phase_filter_deps="gpl"
2559 pp_filter_deps="gpl postproc"
2560 pullup_filter_deps="gpl"
2561 removelogo_filter_deps="avcodec avformat swscale"
2562 resample_filter_deps="avresample"
2563 sab_filter_deps="gpl swscale"
2564 scale_filter_deps="swscale"
2565 smartblur_filter_deps="gpl swscale"
2566 showspectrum_filter_deps="avcodec"
2567 showspectrum_filter_select="rdft"
2568 spp_filter_deps="gpl avcodec"
2569 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2570 stereo3d_filter_deps="gpl"
2571 subtitles_filter_deps="avformat avcodec libass"
2572 super2xsai_filter_deps="gpl"
2573 tinterlace_filter_deps="gpl"
2574 vidstabdetect_filter_deps="libvidstab"
2575 vidstabtransform_filter_deps="libvidstab"
2576 pixfmts_super2xsai_test_deps="super2xsai_filter"
2577 tinterlace_merge_test_deps="tinterlace_filter"
2578 tinterlace_pad_test_deps="tinterlace_filter"
2579 zmq_filter_deps="libzmq"
2580 zoompan_filter_deps="swscale"
2581
2582 # examples
2583 avio_reading="avformat avcodec avutil"
2584 avcodec_example_deps="avcodec avutil"
2585 demuxing_decoding_example_deps="avcodec avformat avutil"
2586 filter_audio_example_deps="avfilter avutil"
2587 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2588 filtering_video_example_deps="avfilter avcodec avformat avutil"
2589 metadata_example_deps="avformat avutil"
2590 muxing_example_deps="avcodec avformat avutil swscale"
2591 remuxing_example_deps="avcodec avformat avutil"
2592 resampling_audio_example_deps="avutil swresample"
2593 scaling_video_example_deps="avutil swscale"
2594 transcode_aac_example_deps="avcodec avformat swresample"
2595 transcoding_example_deps="avfilter avcodec avformat avutil"
2596
2597 # libraries, in linking order
2598 avcodec_deps="avutil"
2599 avdevice_deps="avformat avcodec avutil"
2600 avfilter_deps="avutil"
2601 avformat_deps="avcodec avutil"
2602 avresample_deps="avutil"
2603 postproc_deps="avutil gpl"
2604 swresample_deps="avutil"
2605 swscale_deps="avutil"
2606
2607 # programs
2608 ffmpeg_deps="avcodec avfilter avformat swresample"
2609 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2610                null_filter
2611                setpts_filter trim_filter"
2612 ffplay_deps="avcodec avformat swscale swresample sdl"
2613 ffplay_libs='$sdl_libs'
2614 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2615 ffprobe_deps="avcodec avformat"
2616 ffserver_deps="avformat fork sarestart"
2617 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2618
2619 # documentation
2620 podpages_deps="perl"
2621 manpages_deps="perl pod2man"
2622 htmlpages_deps="perl texi2html"
2623 txtpages_deps="perl makeinfo"
2624 doc_deps_any="manpages htmlpages podpages txtpages"
2625
2626 # default parameters
2627
2628 logfile="config.log"
2629
2630 # installation paths
2631 prefix_default="/usr/local"
2632 bindir_default='${prefix}/bin'
2633 datadir_default='${prefix}/share/ffmpeg'
2634 docdir_default='${prefix}/share/doc/ffmpeg'
2635 incdir_default='${prefix}/include'
2636 libdir_default='${prefix}/lib'
2637 mandir_default='${prefix}/share/man'
2638 shlibdir_default="$libdir_default"
2639
2640 # toolchain
2641 ar_default="ar"
2642 cc_default="gcc"
2643 cxx_default="g++"
2644 host_cc_default="gcc"
2645 cp_f="cp -f"
2646 doxygen_default="doxygen"
2647 install="install"
2648 ln_s="ln -s -f"
2649 nm_default="nm -g"
2650 objformat="elf"
2651 pkg_config_default=pkg-config
2652 ranlib_default="ranlib"
2653 strip_default="strip"
2654 yasmexe_default="yasm"
2655 windres_default="windres"
2656
2657 nogas=":"
2658
2659 # OS
2660 target_os_default=$(tolower $(uname -s))
2661 host_os=$target_os_default
2662
2663 # machine
2664 if test "$target_os_default" = aix; then
2665     arch_default=$(uname -p)
2666     strip_default="strip -X32_64"
2667 else
2668     arch_default=$(uname -m)
2669 fi
2670 cpu="generic"
2671 intrinsics="none"
2672
2673 # configurable options
2674 enable $PROGRAM_LIST
2675 enable $DOCUMENT_LIST
2676 enable $EXAMPLE_LIST
2677 enable $(filter_out avresample $LIBRARY_LIST)
2678 enable stripping
2679
2680 enable asm
2681 enable debug
2682 enable doc
2683 enable optimizations
2684 enable runtime_cpudetect
2685 enable safe_bitstream_reader
2686 enable static
2687 enable swscale_alpha
2688
2689 sws_max_filter_size_default=256
2690 set_default sws_max_filter_size
2691
2692 # Enable hwaccels by default.
2693 enable dxva2 vaapi vda vdpau xvmc
2694 enable xlib
2695
2696 # build settings
2697 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2698 LIBPREF="lib"
2699 LIBSUF=".a"
2700 FULLNAME='$(NAME)$(BUILDSUF)'
2701 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2702 SLIBPREF="lib"
2703 SLIBSUF=".so"
2704 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2705 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2706 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2707 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2708 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2709 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2710
2711 asflags_filter=echo
2712 cflags_filter=echo
2713 ldflags_filter=echo
2714
2715 AS_C='-c'
2716 AS_O='-o $@'
2717 CC_C='-c'
2718 CC_E='-E -o $@'
2719 CC_O='-o $@'
2720 CXX_C='-c'
2721 CXX_O='-o $@'
2722 LD_O='-o $@'
2723 LD_LIB='-l%'
2724 LD_PATH='-L'
2725 HOSTCC_C='-c'
2726 HOSTCC_E='-E -o $@'
2727 HOSTCC_O='-o $@'
2728 HOSTLD_O='-o $@'
2729
2730 host_libs='-lm'
2731 host_cflags_filter=echo
2732 host_ldflags_filter=echo
2733
2734 target_path='$(CURDIR)'
2735
2736 # since the object filename is not given with the -MM flag, the compiler
2737 # is only able to print the basename, and we must add the path ourselves
2738 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2739 DEPFLAGS='-MM'
2740
2741 # find source path
2742 if test -f configure; then
2743     source_path=.
2744 else
2745     source_path=$(cd $(dirname "$0"); pwd)
2746     echo "$source_path" | grep -q '[[:blank:]]' &&
2747         die "Out of tree builds are impossible with whitespace in source path."
2748     test -e "$source_path/config.h" &&
2749         die "Out of tree builds are impossible with config.h in source dir."
2750 fi
2751
2752 for v in "$@"; do
2753     r=${v#*=}
2754     l=${v%"$r"}
2755     r=$(sh_quote "$r")
2756     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2757 done
2758
2759 find_things(){
2760     thing=$1
2761     pattern=$2
2762     file=$source_path/$3
2763     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2764 }
2765
2766 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2767 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2768 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2769 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2770 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2771 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2772 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2773 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2774 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2775 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2776 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2777
2778 ALL_COMPONENTS="
2779     $BSF_LIST
2780     $DECODER_LIST
2781     $DEMUXER_LIST
2782     $ENCODER_LIST
2783     $FILTER_LIST
2784     $HWACCEL_LIST
2785     $INDEV_LIST
2786     $MUXER_LIST
2787     $OUTDEV_LIST
2788     $PARSER_LIST
2789     $PROTOCOL_LIST
2790 "
2791
2792 for n in $COMPONENT_LIST; do
2793     v=$(toupper ${n%s})_LIST
2794     eval enable \$$v
2795     eval ${n}_if_any="\$$v"
2796 done
2797
2798 enable $ARCH_EXT_LIST
2799
2800 die_unknown(){
2801     echo "Unknown option \"$1\"."
2802     echo "See $0 --help for available options."
2803     exit 1
2804 }
2805
2806 print_3_columns() {
2807     cat | tr ' ' '\n' | sort | pr -r -3 -t
2808 }
2809
2810 show_list() {
2811     suffix=_$1
2812     shift
2813     echo $* | sed s/$suffix//g | print_3_columns
2814     exit 0
2815 }
2816
2817 rand_list(){
2818     IFS=', '
2819     set -- $*
2820     unset IFS
2821     for thing; do
2822         comp=${thing%:*}
2823         prob=${thing#$comp}
2824         prob=${prob#:}
2825         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2826         echo "prob ${prob:-0.5}"
2827         printf '%s\n' $comp
2828     done
2829 }
2830
2831 do_random(){
2832     action=$1
2833     shift
2834     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2835     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2836 }
2837
2838 for opt do
2839     optval="${opt#*=}"
2840     case "$opt" in
2841         --extra-ldflags=*)
2842             add_ldflags $optval
2843         ;;
2844         --extra-ldexeflags=*)
2845             add_ldexeflags $optval
2846         ;;
2847         --extra-libs=*)
2848             add_extralibs $optval
2849         ;;
2850         --disable-devices)
2851             disable $INDEV_LIST $OUTDEV_LIST
2852         ;;
2853         --enable-debug=*)
2854             debuglevel="$optval"
2855         ;;
2856         --disable-programs)
2857             disable $PROGRAM_LIST
2858         ;;
2859         --disable-everything)
2860             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2861         ;;
2862         --disable-all)
2863             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2864             disable $LIBRARY_LIST $PROGRAM_LIST doc
2865         ;;
2866         --enable-random|--disable-random)
2867             action=${opt%%-random}
2868             do_random ${action#--} $COMPONENT_LIST
2869         ;;
2870         --enable-random=*|--disable-random=*)
2871             action=${opt%%-random=*}
2872             do_random ${action#--} $optval
2873         ;;
2874         --enable-*=*|--disable-*=*)
2875             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2876             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2877             eval list=\$$(toupper $thing)_LIST
2878             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2879             list=$(filter "$name" $list)
2880             [ "$list" = "" ] && warn "Option $opt did not match anything"
2881             $action $list
2882         ;;
2883         --enable-?*|--disable-?*)
2884             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2885             if is_in $option $COMPONENT_LIST; then
2886                 test $action = disable && action=unset
2887                 eval $action \$$(toupper ${option%s})_LIST
2888             elif is_in $option $CMDLINE_SELECT; then
2889                 $action $option
2890             else
2891                 die_unknown $opt
2892             fi
2893         ;;
2894         --list-*)
2895             NAME="${opt#--list-}"
2896             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2897             NAME=${NAME%s}
2898             eval show_list $NAME \$$(toupper $NAME)_LIST
2899         ;;
2900         --help|-h) show_help
2901         ;;
2902         --fatal-warnings) enable fatal_warnings
2903         ;;
2904         *)
2905             optname="${opt%%=*}"
2906             optname="${optname#--}"
2907             optname=$(echo "$optname" | sed 's/-/_/g')
2908             if is_in $optname $CMDLINE_SET; then
2909                 eval $optname='$optval'
2910             elif is_in $optname $CMDLINE_APPEND; then
2911                 append $optname "$optval"
2912             else
2913                 die_unknown $opt
2914             fi
2915         ;;
2916     esac
2917 done
2918
2919 disabled logging && logfile=/dev/null
2920
2921 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2922 set >> $logfile
2923
2924 test -n "$cross_prefix" && enable cross_compile
2925
2926 if enabled cross_compile; then
2927     test -n "$arch" && test -n "$target_os" ||
2928         die "Must specify target arch and OS when cross-compiling"
2929 fi
2930
2931 ar_default="${cross_prefix}${ar_default}"
2932 cc_default="${cross_prefix}${cc_default}"
2933 cxx_default="${cross_prefix}${cxx_default}"
2934 nm_default="${cross_prefix}${nm_default}"
2935 pkg_config_default="${cross_prefix}${pkg_config_default}"
2936 ranlib_default="${cross_prefix}${ranlib_default}"
2937 strip_default="${cross_prefix}${strip_default}"
2938 windres_default="${cross_prefix}${windres_default}"
2939
2940 sysinclude_default="${sysroot}/usr/include"
2941
2942 test -n "$valgrind" && toolchain="valgrind-memcheck"
2943
2944 case "$toolchain" in
2945     clang-asan)
2946         cc_default="clang"
2947         add_cflags  -fsanitize=address
2948         add_ldflags -fsanitize=address
2949     ;;
2950     clang-tsan)
2951         cc_default="clang"
2952         add_cflags  -fsanitize=thread -pie
2953         add_ldflags -fsanitize=thread -pie
2954     ;;
2955     clang-usan)
2956         cc_default="clang"
2957         add_cflags  -fsanitize=undefined
2958         add_ldflags -fsanitize=undefined
2959     ;;
2960     gcc-asan)
2961         cc_default="gcc"
2962         add_cflags  -fsanitize=address
2963         add_ldflags -fsanitize=address
2964     ;;
2965     gcc-tsan)
2966         cc_default="gcc"
2967         add_cflags  -fsanitize=thread -pie -fPIC
2968         add_ldflags -fsanitize=thread -pie -fPIC
2969     ;;
2970     gcc-usan)
2971         cc_default="gcc"
2972         add_cflags  -fsanitize=undefined
2973         add_ldflags -fsanitize=undefined
2974     ;;
2975     valgrind-massif)
2976         target_exec_default=${valgrind:-"valgrind"}
2977         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"
2978     ;;
2979     valgrind-memcheck)
2980         target_exec_default=${valgrind:-"valgrind"}
2981         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2982     ;;
2983     msvc)
2984         # Check whether the current MSVC version needs the C99 converter.
2985         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2986         # support enough of C99 to build ffmpeg. Default to the new
2987         # behaviour if the regexp was unable to match anything, since this
2988         # successfully parses the version number of existing supported
2989         # versions that require the converter (MSVC 2010 and 2012).
2990         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2991         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2992             cc_default="cl"
2993         else
2994             cc_default="c99wrap cl"
2995         fi
2996         ld_default="link"
2997         nm_default="dumpbin -symbols"
2998         ar_default="lib"
2999         target_os_default="win32"
3000         # Use a relative path for TMPDIR. This makes sure all the
3001         # ffconf temp files are written with a relative path, avoiding
3002         # issues with msys/win32 path conversion for MSVC parameters
3003         # such as -Fo<file> or -out:<file>.
3004         TMPDIR=.
3005     ;;
3006     icl)
3007         cc_default="icl"
3008         ld_default="xilink"
3009         nm_default="dumpbin -symbols"
3010         ar_default="xilib"
3011         target_os_default="win32"
3012         TMPDIR=.
3013     ;;
3014     gcov)
3015         add_cflags  -fprofile-arcs -ftest-coverage
3016         add_ldflags -fprofile-arcs -ftest-coverage
3017     ;;
3018     hardened)
3019         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
3020         add_ldflags -Wl,-z,relro -Wl,-z,now
3021     ;;
3022     ?*)
3023         die "Unknown toolchain $toolchain"
3024     ;;
3025 esac
3026
3027 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3028     target_exec target_os yasmexe
3029 enabled cross_compile || host_cc_default=$cc
3030 set_default host_cc
3031
3032 if ! $pkg_config --version >/dev/null 2>&1; then
3033     warn "$pkg_config not found, library detection may fail."
3034     pkg_config=false
3035 fi
3036
3037 if test $doxygen != $doxygen_default && \
3038   ! $doxygen --version >/dev/null 2>&1; then
3039     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3040 fi
3041
3042 exesuf() {
3043     case $1 in
3044         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3045     esac
3046 }
3047
3048 EXESUF=$(exesuf $target_os)
3049 HOSTEXESUF=$(exesuf $host_os)
3050
3051 # set temporary file name
3052 : ${TMPDIR:=$TEMPDIR}
3053 : ${TMPDIR:=$TMP}
3054 : ${TMPDIR:=/tmp}
3055
3056 if [ -n "$tempprefix" ] ; then
3057     mktemp(){
3058         echo $tempprefix.${HOSTNAME}.${UID}
3059     }
3060 elif ! check_cmd mktemp -u XXXXXX; then
3061     # simple replacement for missing mktemp
3062     # NOT SAFE FOR GENERAL USE
3063     mktemp(){
3064         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3065     }
3066 fi
3067
3068 tmpfile(){
3069     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3070         (set -C; exec > $tmp) 2>/dev/null ||
3071         die "Unable to create temporary file in $TMPDIR."
3072     append TMPFILES $tmp
3073     eval $1=$tmp
3074 }
3075
3076 trap 'rm -f -- $TMPFILES' EXIT
3077
3078 tmpfile TMPASM .asm
3079 tmpfile TMPC   .c
3080 tmpfile TMPCPP .cpp
3081 tmpfile TMPE   $EXESUF
3082 tmpfile TMPH   .h
3083 tmpfile TMPM   .m
3084 tmpfile TMPO   .o
3085 tmpfile TMPS   .S
3086 tmpfile TMPSH  .sh
3087 tmpfile TMPV   .ver
3088
3089 unset -f mktemp
3090
3091 chmod +x $TMPE
3092
3093 # make sure we can execute files in $TMPDIR
3094 cat > $TMPSH 2>> $logfile <<EOF
3095 #! /bin/sh
3096 EOF
3097 chmod +x $TMPSH >> $logfile 2>&1
3098 if ! $TMPSH >> $logfile 2>&1; then
3099     cat <<EOF
3100 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3101 variable to another directory and make sure that it is not mounted noexec.
3102 EOF
3103     die "Sanity test failed."
3104 fi
3105
3106 ccc_flags(){
3107     for flag; do
3108         case $flag in
3109             -std=c99)           echo -c99                       ;;
3110             -mcpu=*)            echo -arch ${flag#*=}           ;;
3111             -mieee)             echo -ieee                      ;;
3112             -O*|-fast)          echo $flag                      ;;
3113             -fno-math-errno)    echo -assume nomath_errno       ;;
3114             -g)                 echo -g3                        ;;
3115             -Wall)              echo -msg_enable level2         ;;
3116             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3117             -Wl,*)              echo $flag                      ;;
3118             -f*|-W*)                                            ;;
3119             *)                  echo $flag                      ;;
3120         esac
3121    done
3122 }
3123
3124 cparser_flags(){
3125     for flag; do
3126         case $flag in
3127             -Wno-switch)             echo -Wno-switch-enum ;;
3128             -Wno-format-zero-length) ;;
3129             -Wdisabled-optimization) ;;
3130             -Wno-pointer-sign)       echo -Wno-other ;;
3131             *)                       echo $flag ;;
3132         esac
3133     done
3134 }
3135
3136 msvc_common_flags(){
3137     for flag; do
3138         case $flag in
3139             # In addition to specifying certain flags under the compiler
3140             # specific filters, they must be specified here as well or else the
3141             # generic catch all at the bottom will print the original flag.
3142             -Wall)                ;;
3143             -std=c99)             ;;
3144             # Common flags
3145             -fomit-frame-pointer) ;;
3146             -g)                   echo -Z7 ;;
3147             -fno-math-errno)      ;;
3148             -fno-common)          ;;
3149             -fno-signed-zeros)    ;;
3150             -fPIC)                ;;
3151             -mthumb)              ;;
3152             -march=*)             ;;
3153             -lz)                  echo zlib.lib ;;
3154             -lavifil32)           echo vfw32.lib ;;
3155             -lavicap32)           echo vfw32.lib user32.lib ;;
3156             -l*)                  echo ${flag#-l}.lib ;;
3157             *)                    echo $flag ;;
3158         esac
3159     done
3160 }
3161
3162 msvc_flags(){
3163     msvc_common_flags "$@"
3164     for flag; do
3165         case $flag in
3166             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3167                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3168                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3169                                        -wd4554 \
3170                                        -wd4273 ;;
3171         esac
3172     done
3173 }
3174
3175 icl_flags(){
3176     msvc_common_flags "$@"
3177     for flag; do
3178         case $flag in
3179             # Despite what Intel's documentation says -Wall, which is supported
3180             # on Windows, does enable remarks so disable them here.
3181             -Wall)                echo $flag -Qdiag-disable:remark ;;
3182             -std=c99)             echo -Qstd=c99 ;;
3183             -flto)                echo -ipo ;;
3184         esac
3185     done
3186 }
3187
3188 icc_flags(){
3189     for flag; do
3190         case $flag in
3191             -flto)                echo -ipo ;;
3192             *)                    echo $flag ;;
3193         esac
3194     done
3195 }
3196
3197 pgi_flags(){
3198     for flag; do
3199         case $flag in
3200             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3201             -fomit-frame-pointer) echo -Mnoframe ;;
3202             -g)                   echo -gopt ;;
3203             *)                    echo $flag ;;
3204         esac
3205     done
3206 }
3207
3208 suncc_flags(){
3209     for flag; do
3210         case $flag in
3211             -march=*|-mcpu=*)
3212                 case "${flag#*=}" in
3213                     native)                   echo -xtarget=native       ;;
3214                     v9|niagara)               echo -xarch=sparc          ;;
3215                     ultrasparc)               echo -xarch=sparcvis       ;;
3216                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3217                     i586|pentium)             echo -xchip=pentium        ;;
3218                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3219                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3220                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3221                     pentium4*)          echo -xtarget=pentium4           ;;
3222                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3223                     *-sse3)             echo -xarch=sse3                 ;;
3224                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3225                     bonnell)                   echo -xarch=ssse3         ;;
3226                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3227                     westmere)                  echo -xtarget=westmere    ;;
3228                     silvermont)                echo -xarch=sse4_2        ;;
3229                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3230                     core-avx*|ivybridge|haswell|broadwell)
3231                                                echo -xarch=avx           ;;
3232                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3233                     btver1)                    echo -xarch=amdsse4a      ;;
3234                     btver2|bdver*)             echo -xarch=avx           ;;
3235                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3236                     k8|opteron|athlon64|athlon-fx)
3237                                                echo -xarch=sse2a         ;;
3238                     athlon*)                   echo -xarch=pentium_proa  ;;
3239                 esac
3240                 ;;
3241             -std=c99)             echo -xc99              ;;
3242             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3243             -fPIC)                echo -KPIC -xcode=pic32 ;;
3244             -W*,*)                echo $flag              ;;
3245             -f*-*|-W*|-mimpure-text)                      ;;
3246             -shared)              echo -G                 ;;
3247             *)                    echo $flag              ;;
3248         esac
3249     done
3250 }
3251
3252 tms470_flags(){
3253     for flag; do
3254         case $flag in
3255             -march=*|-mcpu=*)
3256                 case "${flag#*=}" in
3257                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3258                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3259                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3260                     armv6*|arm11*)          echo -mv=6   ;;
3261                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3262                                             echo -mv=5e  ;;
3263                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3264                 esac
3265                 ;;
3266             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3267             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3268             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3269             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3270             -msoft-float)   echo --float_support=vfplib       ;;
3271             -O[0-3]|-mf=*)  echo $flag                        ;;
3272             -g)             echo -g -mn                       ;;
3273             -pds=*)         echo $flag                        ;;
3274             -D*|-I*)        echo $flag                        ;;
3275             --gcc|--abi=*)  echo $flag                        ;;
3276             -me)            echo $flag                        ;;
3277         esac
3278     done
3279 }
3280
3281 probe_cc(){
3282     pfx=$1
3283     _cc=$2
3284
3285     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3286     unset _ld_o _ldflags _ld_lib _ld_path
3287     unset _depflags _DEPCMD _DEPFLAGS
3288     _flags_filter=echo
3289
3290     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3291         true # no-op to avoid reading stdin in following checks
3292     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3293         _type=llvm_gcc
3294         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3295         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3296         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3297         _cflags_speed='-O3'
3298         _cflags_size='-Os'
3299     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3300         _type=gcc
3301         gcc_version=$($_cc --version | head -n1)
3302         gcc_basever=$($_cc -dumpversion)
3303         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3304         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3305         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3306         if ! $_cc -dumpversion | grep -q '^2\.'; then
3307             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3308         fi
3309         _cflags_speed='-O3'
3310         _cflags_size='-Os'
3311     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3312         _type=icc
3313         _ident=$($_cc --version | head -n1)
3314         _depflags='-MMD'
3315         _cflags_speed='-O3'
3316         _cflags_size='-Os'
3317         _cflags_noopt='-O1'
3318         _flags_filter=icc_flags
3319     elif $_cc -v 2>&1 | grep -q xlc; then
3320         _type=xlc
3321         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3322         _cflags_speed='-O5'
3323         _cflags_size='-O5 -qcompact'
3324     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3325         _type=ccc
3326         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3327         _DEPFLAGS='-M'
3328         _cflags_speed='-fast'
3329         _cflags_size='-O1'
3330         _flags_filter=ccc_flags
3331     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3332         test -d "$sysroot" || die "No valid sysroot specified."
3333         _type=armcc
3334         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
3335         armcc_conf="$PWD/armcc.conf"
3336         $_cc --arm_linux_configure                 \
3337              --arm_linux_config_file="$armcc_conf" \
3338              --configure_sysroot="$sysroot"        \
3339              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3340              die "Error creating armcc configuration file."
3341         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3342         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3343         as_default="${cross_prefix}gcc"
3344         _depflags='-MMD'
3345         _cflags_speed='-O3'
3346         _cflags_size='-Os'
3347     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3348         _type=tms470
3349         _ident=$($_cc -version | head -n1 | tr -s ' ')
3350         _flags='--gcc --abi=eabi -me'
3351         _cc_e='-ppl -fe=$@'
3352         _cc_o='-fe=$@'
3353         _depflags='-ppa -ppd=$(@:.o=.d)'
3354         _cflags_speed='-O3 -mf=5'
3355         _cflags_size='-O3 -mf=2'
3356         _flags_filter=tms470_flags
3357     elif $_cc -v 2>&1 | grep -q clang; then
3358         _type=clang
3359         _ident=$($_cc --version | head -n1)
3360         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3361         _cflags_speed='-O3'
3362         _cflags_size='-Os'
3363     elif $_cc -V 2>&1 | grep -q Sun; then
3364         _type=suncc
3365         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3366         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3367         _DEPFLAGS='-xM1 -xc99'
3368         _ldflags='-std=c99'
3369         _cflags_speed='-O5'
3370         _cflags_size='-O5 -xspace'
3371         _flags_filter=suncc_flags
3372     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3373         _type=pathscale
3374         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3375         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3376         _cflags_speed='-O2'
3377         _cflags_size='-Os'
3378         _flags_filter='filter_out -Wdisabled-optimization'
3379     elif $_cc -v 2>&1 | grep -q Open64; then
3380         _type=open64
3381         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3382         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3383         _cflags_speed='-O2'
3384         _cflags_size='-Os'
3385         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3386     elif $_cc -V 2>&1 | grep -q Portland; then
3387         _type=pgi
3388         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3389         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3390         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3391         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3392         _cflags_noopt="-O"
3393         _flags_filter=pgi_flags
3394     elif $_cc 2>&1 | grep -q Microsoft; then
3395         _type=msvc
3396         _ident=$($cc 2>&1 | head -n1)
3397         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3398         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3399         _cflags_speed="-O2"
3400         _cflags_size="-O1"
3401         if $_cc 2>&1 | grep -q Linker; then
3402             _ld_o='-out:$@'
3403         else
3404             _ld_o='-Fe$@'
3405         fi
3406         _cc_o='-Fo$@'
3407         _cc_e='-P -Fi$@'
3408         _flags_filter=msvc_flags
3409         _ld_lib='lib%.a'
3410         _ld_path='-libpath:'
3411         _flags='-nologo'
3412         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3413         if [ $pfx = hostcc ]; then
3414             append _cflags -Dsnprintf=_snprintf
3415         fi
3416         disable stripping
3417     elif $_cc 2>&1 | grep -q Intel; then
3418         _type=icl
3419         _ident=$($cc 2>&1 | head -n1)
3420         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3421         # Not only is O3 broken on 13.x+ but it is slower on all previous
3422         # versions (tested) as well.
3423         _cflags_speed="-O2"
3424         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3425         if $_cc 2>&1 | grep -q Linker; then
3426             _ld_o='-out:$@'
3427         else
3428             _ld_o='-Fe$@'
3429         fi
3430         _cc_o='-Fo$@'
3431         _cc_e='-P'
3432         _flags_filter=icl_flags
3433         _ld_lib='lib%.a'
3434         _ld_path='-libpath:'
3435         # -Qdiag-error to make icl error when seeing certain unknown arguments
3436         _flags='-nologo -Qdiag-error:4044,10157'
3437         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3438         # with MSVC which enables it by default.
3439         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3440         if [ $pfx = hostcc ]; then
3441             append _cflags -Dsnprintf=_snprintf
3442         fi
3443     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3444         _type=cparser
3445         _ident=$($_cc --version | head -n1)
3446         _depflags='-MMD'
3447         _cflags_speed='-O4'
3448         _cflags_size='-O2'
3449         _flags_filter=cparser_flags
3450     fi
3451
3452     eval ${pfx}_type=\$_type
3453     eval ${pfx}_ident=\$_ident
3454 }
3455
3456 set_ccvars(){
3457     eval ${1}_C=\${_cc_c-\${${1}_C}}
3458     eval ${1}_E=\${_cc_e-\${${1}_E}}
3459     eval ${1}_O=\${_cc_o-\${${1}_O}}
3460
3461     if [ -n "$_depflags" ]; then
3462         eval ${1}_DEPFLAGS=\$_depflags
3463     else
3464         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3465         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3466         eval DEP${1}FLAGS=\$_flags
3467     fi
3468 }
3469
3470 probe_cc cc "$cc"
3471 cflags_filter=$_flags_filter
3472 cflags_speed=$_cflags_speed
3473 cflags_size=$_cflags_size
3474 cflags_noopt=$_cflags_noopt
3475 add_cflags $_flags $_cflags
3476 cc_ldflags=$_ldflags
3477 set_ccvars CC
3478
3479 probe_cc hostcc "$host_cc"
3480 host_cflags_filter=$_flags_filter
3481 add_host_cflags  $_flags $_cflags
3482 set_ccvars HOSTCC
3483
3484 test -n "$cc_type" && enable $cc_type ||
3485     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3486
3487 : ${as_default:=$cc}
3488 : ${dep_cc_default:=$cc}
3489 : ${ld_default:=$cc}
3490 : ${host_ld_default:=$host_cc}
3491 set_default ar as dep_cc ld host_ld windres
3492
3493 probe_cc as "$as"
3494 asflags_filter=$_flags_filter
3495 add_asflags $_flags $_cflags
3496 set_ccvars AS
3497
3498 probe_cc ld "$ld"
3499 ldflags_filter=$_flags_filter
3500 add_ldflags $_flags $_ldflags
3501 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3502 LD_O=${_ld_o-$LD_O}
3503 LD_LIB=${_ld_lib-$LD_LIB}
3504 LD_PATH=${_ld_path-$LD_PATH}
3505
3506 probe_cc hostld "$host_ld"
3507 host_ldflags_filter=$_flags_filter
3508 add_host_ldflags $_flags $_ldflags
3509 HOSTLD_O=${_ld_o-$HOSTLD_O}
3510
3511 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3512     probe_cc depcc "$dep_cc"
3513     CCDEP=${_DEPCMD:-$DEPCMD}
3514     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3515     DEPCCFLAGS=$_flags
3516 fi
3517
3518 if $ar 2>&1 | grep -q Microsoft; then
3519     arflags="-nologo"
3520     ar_o='-out:$@'
3521 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3522     arflags="rq"
3523     ar_o='$@'
3524 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3525     arflags='-Xany -r -c'
3526     ar_o='$@'
3527 else
3528     arflags="rc"
3529     ar_o='$@'
3530 fi
3531
3532 add_cflags $extra_cflags
3533 add_cxxflags $extra_cxxflags
3534 add_asflags $extra_cflags
3535
3536 if test -n "$sysroot"; then
3537     case "$cc_type" in
3538         gcc|llvm_gcc|clang)
3539             add_cppflags --sysroot="$sysroot"
3540             add_ldflags --sysroot="$sysroot"
3541 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3542             add_cppflags -isysroot "$sysroot"
3543             add_ldflags -isysroot "$sysroot"
3544         ;;
3545         tms470)
3546             add_cppflags -I"$sysinclude"
3547             add_ldflags  --sysroot="$sysroot"
3548         ;;
3549     esac
3550 fi
3551
3552 if test "$cpu" = host; then
3553     enabled cross_compile &&
3554         die "--cpu=host makes no sense when cross-compiling."
3555
3556     case "$cc_type" in
3557         gcc|llvm_gcc)
3558             check_native(){
3559                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3560                 sed -n "/cc1.*$1=/{
3561                             s/.*$1=\\([^ ]*\\).*/\\1/
3562                             p
3563                             q
3564                         }" $TMPE
3565             }
3566             cpu=$(check_native -march || check_native -mcpu)
3567         ;;
3568     esac
3569
3570     test "${cpu:-host}" = host &&
3571         die "--cpu=host not supported with compiler $cc"
3572 fi
3573
3574 # Deal with common $arch aliases
3575 case "$arch" in
3576     aarch64|arm64)
3577         arch="aarch64"
3578     ;;
3579     arm*|iPad*|iPhone*)
3580         arch="arm"
3581     ;;
3582     mips*|IP*)
3583         arch="mips"
3584     ;;
3585     parisc*|hppa*)
3586         arch="parisc"
3587     ;;
3588     "Power Macintosh"|ppc*|powerpc*)
3589         arch="ppc"
3590     ;;
3591     s390|s390x)
3592         arch="s390"
3593     ;;
3594     sh4|sh)
3595         arch="sh4"
3596     ;;
3597     sun4u|sparc*)
3598         arch="sparc"
3599     ;;
3600     tilegx|tile-gx)
3601         arch="tilegx"
3602     ;;
3603     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3604         arch="x86"
3605     ;;
3606 esac
3607
3608 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3609 enable $arch
3610
3611 # Add processor-specific flags
3612 if enabled aarch64; then
3613
3614     case $cpu in
3615         armv*)
3616             cpuflags="-march=$cpu"
3617         ;;
3618         *)
3619             cpuflags="-mcpu=$cpu"
3620         ;;
3621     esac
3622
3623 elif enabled alpha; then
3624
3625     cpuflags="-mcpu=$cpu"
3626
3627 elif enabled arm; then
3628
3629     check_arm_arch() {
3630         check_cpp_condition stddef.h \
3631             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3632             $cpuflags
3633     }
3634
3635     probe_arm_arch() {
3636         if   check_arm_arch 4;        then echo armv4;
3637         elif check_arm_arch 4T;       then echo armv4t;
3638         elif check_arm_arch 5;        then echo armv5;
3639         elif check_arm_arch 5E;       then echo armv5e;
3640         elif check_arm_arch 5T;       then echo armv5t;
3641         elif check_arm_arch 5TE;      then echo armv5te;
3642         elif check_arm_arch 5TEJ;     then echo armv5te;
3643         elif check_arm_arch 6;        then echo armv6;
3644         elif check_arm_arch 6J;       then echo armv6j;
3645         elif check_arm_arch 6K;       then echo armv6k;
3646         elif check_arm_arch 6Z;       then echo armv6z;
3647         elif check_arm_arch 6ZK;      then echo armv6zk;
3648         elif check_arm_arch 6T2;      then echo armv6t2;
3649         elif check_arm_arch 7;        then echo armv7;
3650         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3651         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3652         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3653         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3654         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3655         fi
3656     }
3657
3658     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3659
3660     case $cpu in
3661         armv*)
3662             cpuflags="-march=$cpu"
3663             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3664         ;;
3665         *)
3666             cpuflags="-mcpu=$cpu"
3667             case $cpu in
3668                 cortex-a*)                               subarch=armv7a  ;;
3669                 cortex-r*)                               subarch=armv7r  ;;
3670                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3671                 arm11*)                                  subarch=armv6   ;;
3672                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3673                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3674                 *)                             subarch=$(probe_arm_arch) ;;
3675             esac
3676         ;;
3677     esac
3678
3679     case "$subarch" in
3680         armv5t*)    enable fast_clz                ;;
3681         armv[6-8]*)
3682             enable fast_clz
3683             disabled fast_unaligned || enable fast_unaligned
3684             ;;
3685     esac
3686
3687 elif enabled avr32; then
3688
3689     case $cpu in
3690         ap7[02]0[0-2])
3691             subarch="avr32_ap"
3692             cpuflags="-mpart=$cpu"
3693         ;;
3694         ap)
3695             subarch="avr32_ap"
3696             cpuflags="-march=$cpu"
3697         ;;
3698         uc3[ab]*)
3699             subarch="avr32_uc"
3700             cpuflags="-mcpu=$cpu"
3701         ;;
3702         uc)
3703             subarch="avr32_uc"
3704             cpuflags="-march=$cpu"
3705         ;;
3706     esac
3707
3708 elif enabled bfin; then
3709
3710     cpuflags="-mcpu=$cpu"
3711
3712 elif enabled mips; then
3713
3714     cpuflags="-march=$cpu"
3715
3716     case $cpu in
3717         24kc)
3718             disable mipsfpu
3719             disable mipsdspr1
3720             disable mipsdspr2
3721         ;;
3722         24kf*)
3723             disable mipsdspr1
3724             disable mipsdspr2
3725         ;;
3726         24kec|34kc|1004kc)
3727             disable mipsfpu
3728             disable mipsdspr2
3729         ;;
3730         24kef*|34kf*|1004kf*)
3731             disable mipsdspr2
3732         ;;
3733         74kc)
3734             disable mipsfpu
3735         ;;
3736     esac
3737
3738 elif enabled ppc; then
3739
3740     disable ldbrx
3741     disable vsx
3742
3743     case $(tolower $cpu) in
3744         601|ppc601|powerpc601)
3745             cpuflags="-mcpu=601"
3746             disable altivec
3747         ;;
3748         603*|ppc603*|powerpc603*)
3749             cpuflags="-mcpu=603"
3750             disable altivec
3751         ;;
3752         604*|ppc604*|powerpc604*)
3753             cpuflags="-mcpu=604"
3754             disable altivec
3755         ;;
3756         g3|75*|ppc75*|powerpc75*)
3757             cpuflags="-mcpu=750"
3758             disable altivec
3759         ;;
3760         g4|745*|ppc745*|powerpc745*)
3761             cpuflags="-mcpu=7450"
3762         ;;
3763         74*|ppc74*|powerpc74*)
3764             cpuflags="-mcpu=7400"
3765         ;;
3766         g5|970|ppc970|powerpc970)
3767             cpuflags="-mcpu=970"
3768         ;;
3769         power[3-8]*)
3770             cpuflags="-mcpu=$cpu"
3771         ;;
3772         cell)
3773             cpuflags="-mcpu=cell"
3774             enable ldbrx
3775         ;;
3776         e500mc)
3777             cpuflags="-mcpu=e500mc"
3778             disable altivec
3779         ;;
3780         e500v2)
3781             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3782             disable altivec
3783             disable dcbzl
3784         ;;
3785         e500)
3786             cpuflags="-mcpu=8540 -mhard-float"
3787             disable altivec
3788             disable dcbzl
3789         ;;
3790     esac
3791
3792 elif enabled sparc; then
3793
3794     case $cpu in
3795         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3796             cpuflags="-mcpu=$cpu"
3797         ;;
3798         ultrasparc*|niagara[234])
3799             cpuflags="-mcpu=$cpu"
3800         ;;
3801     esac
3802
3803 elif enabled x86; then
3804
3805     case $cpu in
3806         i[345]86|pentium)
3807             cpuflags="-march=$cpu"
3808             disable mmx
3809         ;;
3810         # targets that do NOT support nopl and conditional mov (cmov)
3811         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3812             cpuflags="-march=$cpu"
3813             disable i686
3814         ;;
3815         # targets that do support nopl and conditional mov (cmov)
3816         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3817         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3818             cpuflags="-march=$cpu"
3819             enable i686
3820             enable fast_cmov
3821         ;;
3822         # targets that do support conditional mov but on which it's slow
3823         pentium4|pentium4m|prescott|nocona)
3824             cpuflags="-march=$cpu"
3825             enable i686
3826             disable fast_cmov
3827         ;;
3828     esac
3829
3830 fi
3831
3832 if [ "$cpu" != generic ]; then
3833     add_cflags  $cpuflags
3834     add_asflags $cpuflags
3835 fi
3836
3837 # compiler sanity check
3838 check_exec <<EOF
3839 int main(void){ return 0; }
3840 EOF
3841 if test "$?" != 0; then
3842     echo "$cc is unable to create an executable file."
3843     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3844         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3845         echo "Only do this if you know what cross compiling means."
3846     fi
3847     die "C compiler test failed."
3848 fi
3849
3850 add_cppflags -D_ISOC99_SOURCE
3851 add_cxxflags -D__STDC_CONSTANT_MACROS
3852 check_cflags -std=c99
3853 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3854 #include <stdlib.h>
3855 EOF
3856 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3857 #include <stdlib.h>
3858 EOF
3859
3860 add_host_cppflags -D_ISOC99_SOURCE
3861 check_host_cflags -std=c99
3862 check_host_cflags -Wall
3863 check_host_cflags -O3
3864
3865 check_64bit(){
3866     arch32=$1
3867     arch64=$2
3868     expr=$3
3869     check_code cc "" "int test[2*($expr) - 1]" &&
3870         subarch=$arch64 || subarch=$arch32
3871 }
3872
3873 case "$arch" in
3874     aarch64|alpha|ia64)
3875         spic=$shared
3876     ;;
3877     mips)
3878         check_64bit mips mips64 '_MIPS_SIM > 1'
3879         spic=$shared
3880     ;;
3881     parisc)
3882         check_64bit parisc parisc64 'sizeof(void *) > 4'
3883         spic=$shared
3884     ;;
3885     ppc)
3886         check_64bit ppc ppc64 'sizeof(void *) > 4'
3887         spic=$shared
3888     ;;
3889     s390)
3890         check_64bit s390 s390x 'sizeof(void *) > 4'
3891         spic=$shared
3892     ;;
3893     sparc)
3894         check_64bit sparc sparc64 'sizeof(void *) > 4'
3895         spic=$shared
3896     ;;
3897     x86)
3898         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3899         if test "$subarch" = "x86_64"; then
3900             spic=$shared
3901         fi
3902     ;;
3903     ppc)
3904         check_cc <<EOF && subarch="ppc64"
3905         int test[(int)sizeof(char*) - 7];
3906 EOF
3907     ;;
3908 esac
3909
3910 enable $subarch
3911 enabled spic && enable_weak pic
3912
3913 # OS specific
3914 case $target_os in
3915     aix)
3916         SHFLAGS=-shared
3917         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3918         enabled shared && add_ldflags -Wl,-brtl
3919         ;;
3920     android)
3921         disable symver
3922         SLIB_INSTALL_NAME='$(SLIBNAME)'
3923         SLIB_INSTALL_LINKS=
3924         # soname not set on purpose
3925         SHFLAGS=-shared
3926         ;;
3927     haiku)
3928         prefix_default="/boot/common"
3929         network_extralibs="-lnetwork"
3930         host_libs=
3931         ;;
3932     sunos)
3933         SHFLAGS='-shared -Wl,-h,$$(@F)'
3934         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3935         network_extralibs="-lsocket -lnsl"
3936         # When using suncc to build, the Solaris linker will mark
3937         # an executable with each instruction set encountered by
3938         # the Solaris assembler.  As our libraries contain their own
3939         # guards for processor-specific code, instead suppress
3940         # generation of the HWCAPS ELF section on Solaris x86 only.
3941         enabled_all suncc x86 &&
3942             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3943             add_ldflags -Wl,-M,mapfile
3944         nm_default='nm -P -g'
3945         ;;
3946     netbsd)
3947         disable symver
3948         oss_indev_extralibs="-lossaudio"
3949         oss_outdev_extralibs="-lossaudio"
3950         enabled gcc || check_ldflags -Wl,-zmuldefs
3951         ;;
3952     openbsd|bitrig)
3953         disable symver
3954         SHFLAGS='-shared'
3955         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3956         SLIB_INSTALL_LINKS=
3957         oss_indev_extralibs="-lossaudio"
3958         oss_outdev_extralibs="-lossaudio"
3959         ;;
3960     dragonfly)
3961         disable symver
3962         ;;
3963     freebsd)
3964         ;;
3965     bsd/os)
3966         add_extralibs -lpoll -lgnugetopt
3967         strip="strip -d"
3968         ;;
3969     darwin)
3970         test "${as#*gas-preprocessor.pl}" != "$as" || gas="${gas:=gas-preprocessor.pl} ${as:=$cc}"
3971         enabled ppc && add_asflags -force_cpusubtype_ALL
3972         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3973         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3974         strip="${strip} -x"
3975         add_ldflags -Wl,-dynamic,-search_paths_first
3976         SLIBSUF=".dylib"
3977         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3978         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3979         objformat="macho"
3980         enabled x86_64 && objformat="macho64"
3981         enabled_any pic shared ||
3982             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3983         ;;
3984     mingw32*)
3985         if test $target_os = "mingw32ce"; then
3986             disable network
3987         else
3988             target_os=mingw32
3989         fi
3990         LIBTARGET=i386
3991         if enabled x86_64; then
3992             LIBTARGET="i386:x86-64"
3993         elif enabled arm; then
3994             LIBTARGET=arm-wince
3995         fi
3996         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3997         check_ldflags -Wl,--nxcompat
3998         check_ldflags -Wl,--dynamicbase
3999         shlibdir_default="$bindir_default"
4000         SLIBPREF=""
4001         SLIBSUF=".dll"
4002         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4003         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4004         dlltool="${cross_prefix}dlltool"
4005         if check_cmd lib.exe -list; then
4006             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4007             if enabled x86_64; then
4008                 LIBTARGET=x64
4009             fi
4010         elif check_cmd $dlltool --version; then
4011             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4012         fi
4013         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4014         SLIB_INSTALL_LINKS=
4015         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4016         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4017         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4018         objformat="win32"
4019         ranlib=:
4020         enable dos_paths
4021         ;;
4022     win32|win64)
4023         disable symver
4024         if enabled shared; then
4025             # Link to the import library instead of the normal static library
4026             # for shared libs.
4027             LD_LIB='%.lib'
4028             # Cannot build both shared and static libs with MSVC or icl.
4029             disable static
4030         fi
4031         shlibdir_default="$bindir_default"
4032         SLIBPREF=""
4033         SLIBSUF=".dll"
4034         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4035         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4036         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4037         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4038         SLIB_INSTALL_LINKS=
4039         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4040         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4041         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4042         objformat="win32"
4043         ranlib=:
4044         enable dos_paths
4045         ;;
4046     cygwin*)
4047         target_os=cygwin
4048         shlibdir_default="$bindir_default"
4049         SLIBPREF="cyg"
4050         SLIBSUF=".dll"
4051         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4052         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4053         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4054         SLIB_INSTALL_LINKS=
4055         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4056         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4057         objformat="win32"
4058         enable dos_paths
4059         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4060         ;;
4061     *-dos|freedos|opendos)
4062         network_extralibs="-lsocket"
4063         objformat="coff"
406