avcodec: export motion vectors in frame side data on demand
[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   --disable-pixelutils     disable pixel utils in libavutil
148
149 Hardware accelerators:
150   --disable-dxva2          disable DXVA2 code [autodetect]
151   --disable-vaapi          disable VAAPI code [autodetect]
152   --disable-vda            disable VDA code [autodetect]
153   --disable-vdpau          disable VDPAU code [autodetect]
154
155 Individual component options:
156   --disable-everything     disable all components listed below
157   --disable-encoder=NAME   disable encoder NAME
158   --enable-encoder=NAME    enable encoder NAME
159   --disable-encoders       disable all encoders
160   --disable-decoder=NAME   disable decoder NAME
161   --enable-decoder=NAME    enable decoder NAME
162   --disable-decoders       disable all decoders
163   --disable-hwaccel=NAME   disable hwaccel NAME
164   --enable-hwaccel=NAME    enable hwaccel NAME
165   --disable-hwaccels       disable all hwaccels
166   --disable-muxer=NAME     disable muxer NAME
167   --enable-muxer=NAME      enable muxer NAME
168   --disable-muxers         disable all muxers
169   --disable-demuxer=NAME   disable demuxer NAME
170   --enable-demuxer=NAME    enable demuxer NAME
171   --disable-demuxers       disable all demuxers
172   --enable-parser=NAME     enable parser NAME
173   --disable-parser=NAME    disable parser NAME
174   --disable-parsers        disable all parsers
175   --enable-bsf=NAME        enable bitstream filter NAME
176   --disable-bsf=NAME       disable bitstream filter NAME
177   --disable-bsfs           disable all bitstream filters
178   --enable-protocol=NAME   enable protocol NAME
179   --disable-protocol=NAME  disable protocol NAME
180   --disable-protocols      disable all protocols
181   --enable-indev=NAME      enable input device NAME
182   --disable-indev=NAME     disable input device NAME
183   --disable-indevs         disable input devices
184   --enable-outdev=NAME     enable output device NAME
185   --disable-outdev=NAME    disable output device NAME
186   --disable-outdevs        disable output devices
187   --disable-devices        disable all devices
188   --enable-filter=NAME     enable filter NAME
189   --disable-filter=NAME    disable filter NAME
190   --disable-filters        disable all filters
191
192 External library support:
193   --enable-avisynth        enable reading of AviSynth script files [no]
194   --disable-bzlib          disable bzlib [autodetect]
195   --enable-fontconfig      enable fontconfig
196   --enable-frei0r          enable frei0r video filtering
197   --enable-gnutls          enable gnutls [no]
198   --disable-iconv          disable iconv [autodetect]
199   --enable-ladspa          enable LADSPA audio filtering
200   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
201   --enable-libass          enable libass subtitles rendering [no]
202   --enable-libbluray       enable BluRay reading using libbluray [no]
203   --enable-libbs2b         enable bs2b DSP library [no]
204   --enable-libcaca         enable textual display using libcaca
205   --enable-libcelt         enable CELT decoding via libcelt [no]
206   --enable-libcdio         enable audio CD grabbing with libcdio
207   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
208                            and libraw1394 [no]
209   --enable-libfaac         enable AAC encoding via libfaac [no]
210   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
211   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
212   --enable-libfreetype     enable libfreetype [no]
213   --enable-libfribidi      enable libfribidi [no]
214   --enable-libgme          enable Game Music Emu via libgme [no]
215   --enable-libgsm          enable GSM de/encoding via libgsm [no]
216   --enable-libiec61883     enable iec61883 via libiec61883 [no]
217   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
218   --enable-libmodplug      enable ModPlug via libmodplug [no]
219   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
220   --enable-libnut          enable NUT (de)muxing via libnut,
221                            native (de)muxer exists [no]
222   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
223   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
224   --enable-libopencv       enable video filtering via libopencv [no]
225   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
226   --enable-libopus         enable Opus de/encoding via libopus [no]
227   --enable-libpulse        enable Pulseaudio input via libpulse [no]
228   --enable-libquvi         enable quvi input via libquvi [no]
229   --enable-librtmp         enable RTMP[E] support via librtmp [no]
230   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
231   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
232   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
233   --enable-libsoxr         enable Include libsoxr resampling [no]
234   --enable-libspeex        enable Speex de/encoding via libspeex [no]
235   --enable-libssh          enable SFTP protocol via libssh [no]
236   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
237   --enable-libtheora       enable Theora encoding via libtheora [no]
238   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
239   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
240   --enable-libv4l2         enable libv4l2/v4l-utils [no]
241   --enable-libvidstab      enable video stabilization using vid.stab [no]
242   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
243   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
244   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
245                            native implementation exists [no]
246   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
247   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
248   --enable-libwebp         enable WebP encoding via libwebp [no]
249   --enable-libx264         enable H.264 encoding via x264 [no]
250   --enable-libx265         enable HEVC encoding via x265 [no]
251   --enable-libxavs         enable AVS encoding via xavs [no]
252   --enable-libxvid         enable Xvid encoding via xvidcore,
253                            native MPEG-4/Xvid encoder exists [no]
254   --enable-libzmq          enable message passing via libzmq [no]
255   --enable-libzvbi         enable teletext support via libzvbi [no]
256   --enable-decklink        enable Blackmagick DeckLink output [no]
257   --enable-openal          enable OpenAL 1.1 capture support [no]
258   --enable-opencl          enable OpenCL code
259   --enable-opengl          enable OpenGL rendering [no]
260   --enable-openssl         enable openssl [no]
261   --enable-x11grab         enable X11 grabbing [no]
262   --disable-xlib           disable xlib [autodetect]
263   --disable-zlib           disable zlib [autodetect]
264
265 Toolchain options:
266   --arch=ARCH              select architecture [$arch]
267   --cpu=CPU                select the minimum required CPU (affects
268                            instruction selection, may crash on older CPUs)
269   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
270   --progs-suffix=SUFFIX    program name suffix []
271   --enable-cross-compile   assume a cross-compiler is used
272   --sysroot=PATH           root of cross-build tree
273   --sysinclude=PATH        location of cross-build system headers
274   --target-os=OS           compiler targets OS [$target_os]
275   --target-exec=CMD        command to run executables on target
276   --target-path=DIR        path to view of build directory on target
277   --target-samples=DIR     path to samples directory on target
278   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
279   --toolchain=NAME         set tool defaults according to NAME
280   --nm=NM                  use nm tool NM [$nm_default]
281   --ar=AR                  use archive tool AR [$ar_default]
282   --as=AS                  use assembler AS [$as_default]
283   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
284   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
285   --cc=CC                  use C compiler CC [$cc_default]
286   --cxx=CXX                use C compiler CXX [$cxx_default]
287   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
288   --ld=LD                  use linker LD [$ld_default]
289   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
290   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
291   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
292   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
293   --host-cc=HOSTCC         use host C compiler HOSTCC
294   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
295   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
296   --host-ld=HOSTLD         use host linker HOSTLD
297   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
298   --host-libs=HLIBS        use libs HLIBS when linking for host
299   --host-os=OS             compiler host OS [$target_os]
300   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
301   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
302   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
303   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
304   --extra-libs=ELIBS       add ELIBS [$ELIBS]
305   --extra-version=STRING   version string suffix []
306   --optflags=OPTFLAGS      override optimization-related compiler flags
307   --build-suffix=SUFFIX    library name suffix []
308   --enable-pic             build position-independent code
309   --enable-thumb           compile for Thumb instruction set
310   --enable-lto             use link-time optimization
311
312 Advanced options (experts only):
313   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
314   --disable-symver         disable symbol versioning
315   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
316   --disable-safe-bitstream-reader
317                            disable buffer boundary checking in bitreaders
318                            (faster, but may crash)
319   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
320   --sws-max-filter-size=N  the max filter size swscale uses [$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     extract_mvs_example
1309     filter_audio_example
1310     filtering_audio_example
1311     filtering_video_example
1312     metadata_example
1313     muxing_example
1314     remuxing_example
1315     resampling_audio_example
1316     scaling_video_example
1317     transcode_aac_example
1318     transcoding_example
1319 "
1320
1321 EXTERNAL_LIBRARY_LIST="
1322     avisynth
1323     bzlib
1324     crystalhd
1325     decklink
1326     frei0r
1327     gnutls
1328     iconv
1329     ladspa
1330     libaacplus
1331     libass
1332     libbluray
1333     libbs2b
1334     libcaca
1335     libcdio
1336     libcelt
1337     libdc1394
1338     libfaac
1339     libfdk_aac
1340     libflite
1341     libfontconfig
1342     libfreetype
1343     libfribidi
1344     libgme
1345     libgsm
1346     libiec61883
1347     libilbc
1348     libmodplug
1349     libmp3lame
1350     libnut
1351     libopencore_amrnb
1352     libopencore_amrwb
1353     libopencv
1354     libopenjpeg
1355     libopus
1356     libpulse
1357     libquvi
1358     librtmp
1359     libschroedinger
1360     libshine
1361     libsmbclient
1362     libsoxr
1363     libspeex
1364     libssh
1365     libstagefright_h264
1366     libtheora
1367     libtwolame
1368     libutvideo
1369     libv4l2
1370     libvidstab
1371     libvo_aacenc
1372     libvo_amrwbenc
1373     libvorbis
1374     libvpx
1375     libwavpack
1376     libwebp
1377     libx264
1378     libx265
1379     libxavs
1380     libxvid
1381     libzmq
1382     libzvbi
1383     openal
1384     opencl
1385     opengl
1386     openssl
1387     x11grab
1388     xlib
1389     zlib
1390 "
1391
1392 DOCUMENT_LIST="
1393     doc
1394     htmlpages
1395     manpages
1396     podpages
1397     txtpages
1398 "
1399
1400 FEATURE_LIST="
1401     ftrapv
1402     gray
1403     hardcoded_tables
1404     runtime_cpudetect
1405     safe_bitstream_reader
1406     shared
1407     small
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     pixelutils
1455     network
1456     rdft
1457 "
1458
1459 CONFIG_LIST="
1460     $COMPONENT_LIST
1461     $DOCUMENT_LIST
1462     $EXAMPLE_LIST
1463     $EXTERNAL_LIBRARY_LIST
1464     $FEATURE_LIST
1465     $HWACCEL_LIST
1466     $LICENSE_LIST
1467     $LIBRARY_LIST
1468     $PROGRAM_LIST
1469     $SUBSYSTEM_LIST
1470     fontconfig
1471     incompatible_libav_abi
1472     memalign_hack
1473     memory_poisoning
1474     neon_clobber_test
1475     pic
1476     pod2man
1477     raise_major
1478     thumb
1479     xmm_clobber_test
1480 "
1481
1482 THREADS_LIST="
1483     pthreads
1484     os2threads
1485     w32threads
1486 "
1487
1488 ATOMICS_LIST="
1489     atomics_gcc
1490     atomics_suncc
1491     atomics_win32
1492 "
1493
1494 ARCH_LIST="
1495     aarch64
1496     alpha
1497     arm
1498     avr32
1499     avr32_ap
1500     avr32_uc
1501     bfin
1502     ia64
1503     m68k
1504     mips
1505     mips64
1506     parisc
1507     ppc
1508     ppc64
1509     s390
1510     sh4
1511     sparc
1512     sparc64
1513     tilegx
1514     tilepro
1515     tomi
1516     x86
1517     x86_32
1518     x86_64
1519 "
1520
1521 ARCH_EXT_LIST_ARM="
1522     armv5te
1523     armv6
1524     armv6t2
1525     armv8
1526     neon
1527     vfp
1528     vfpv3
1529     setend
1530 "
1531
1532 ARCH_EXT_LIST_MIPS="
1533     mipsfpu
1534     mips32r2
1535     mipsdspr1
1536     mipsdspr2
1537 "
1538
1539 ARCH_EXT_LIST_X86_SIMD="
1540     amd3dnow
1541     amd3dnowext
1542     avx
1543     avx2
1544     fma3
1545     fma4
1546     mmx
1547     mmxext
1548     sse
1549     sse2
1550     sse3
1551     sse4
1552     sse42
1553     ssse3
1554     xop
1555 "
1556
1557 ARCH_EXT_LIST_PPC="
1558     altivec
1559     dcbzl
1560     ldbrx
1561     ppc4xx
1562     vsx
1563 "
1564
1565 ARCH_EXT_LIST_X86="
1566     $ARCH_EXT_LIST_X86_SIMD
1567     cpunop
1568     i686
1569 "
1570
1571 ARCH_EXT_LIST="
1572     $ARCH_EXT_LIST_ARM
1573     $ARCH_EXT_LIST_PPC
1574     $ARCH_EXT_LIST_X86
1575     $ARCH_EXT_LIST_MIPS
1576     loongson
1577 "
1578
1579 ARCH_FEATURES="
1580     aligned_stack
1581     fast_64bit
1582     fast_clz
1583     fast_cmov
1584     local_aligned_8
1585     local_aligned_16
1586     local_aligned_32
1587     simd_align_16
1588 "
1589
1590 BUILTIN_LIST="
1591     atomic_cas_ptr
1592     machine_rw_barrier
1593     MemoryBarrier
1594     mm_empty
1595     rdtsc
1596     sarestart
1597     sync_val_compare_and_swap
1598 "
1599 HAVE_LIST_CMDLINE="
1600     inline_asm
1601     symver
1602     yasm
1603 "
1604
1605 HAVE_LIST_PUB="
1606     bigendian
1607     fast_unaligned
1608     incompatible_libav_abi
1609 "
1610
1611 HEADERS_LIST="
1612     alsa_asoundlib_h
1613     altivec_h
1614     arpa_inet_h
1615     asm_types_h
1616     cdio_paranoia_h
1617     cdio_paranoia_paranoia_h
1618     CL_cl_h
1619     dev_bktr_ioctl_bt848_h
1620     dev_bktr_ioctl_meteor_h
1621     dev_ic_bt8xx_h
1622     dev_video_bktr_ioctl_bt848_h
1623     dev_video_meteor_ioctl_meteor_h
1624     direct_h
1625     dlfcn_h
1626     dxva_h
1627     ES2_gl_h
1628     gsm_h
1629     io_h
1630     mach_mach_time_h
1631     machine_ioctl_bt848_h
1632     machine_ioctl_meteor_h
1633     malloc_h
1634     openjpeg_1_5_openjpeg_h
1635     OpenGL_gl3_h
1636     poll_h
1637     sndio_h
1638     soundcard_h
1639     sys_mman_h
1640     sys_param_h
1641     sys_resource_h
1642     sys_select_h
1643     sys_soundcard_h
1644     sys_time_h
1645     sys_un_h
1646     sys_videoio_h
1647     termios_h
1648     unistd_h
1649     windows_h
1650     winsock2_h
1651 "
1652
1653 INTRINSICS_LIST="
1654     intrinsics_neon
1655 "
1656
1657 MATH_FUNCS="
1658     atanf
1659     atan2f
1660     cbrt
1661     cbrtf
1662     cosf
1663     exp2
1664     exp2f
1665     expf
1666     fminf
1667     isinf
1668     isnan
1669     ldexpf
1670     llrint
1671     llrintf
1672     log2
1673     log2f
1674     log10f
1675     lrint
1676     lrintf
1677     powf
1678     rint
1679     round
1680     roundf
1681     sinf
1682     trunc
1683     truncf
1684 "
1685
1686 SYSTEM_FUNCS="
1687     access
1688     aligned_malloc
1689     clock_gettime
1690     closesocket
1691     CommandLineToArgvW
1692     CoTaskMemFree
1693     CryptGenRandom
1694     dlopen
1695     fcntl
1696     flt_lim
1697     fork
1698     getaddrinfo
1699     gethrtime
1700     getopt
1701     GetProcessAffinityMask
1702     GetProcessMemoryInfo
1703     GetProcessTimes
1704     getrusage
1705     getservbyport
1706     GetSystemTimeAsFileTime
1707     gettimeofday
1708     glob
1709     glXGetProcAddress
1710     inet_aton
1711     isatty
1712     jack_port_get_latency_range
1713     kbhit
1714     localtime_r
1715     lzo1x_999_compress
1716     mach_absolute_time
1717     MapViewOfFile
1718     memalign
1719     mkstemp
1720     mmap
1721     mprotect
1722     nanosleep
1723     PeekNamedPipe
1724     posix_memalign
1725     pthread_cancel
1726     sched_getaffinity
1727     SetConsoleTextAttribute
1728     setmode
1729     setrlimit
1730     Sleep
1731     strerror_r
1732     sysconf
1733     sysctl
1734     usleep
1735     VirtualAlloc
1736     wglGetProcAddress
1737 "
1738
1739 TOOLCHAIN_FEATURES="
1740     as_dn_directive
1741     as_func
1742     asm_mod_q
1743     attribute_may_alias
1744     attribute_packed
1745     ebp_available
1746     ebx_available
1747     gnu_as
1748     gnu_windres
1749     ibm_asm
1750     inline_asm_labels
1751     inline_asm_nonlocal_labels
1752     inline_asm_direct_symbol_refs
1753     pragma_deprecated
1754     rsync_contimeout
1755     symver_asm_label
1756     symver_gnu_asm
1757     vfp_args
1758     xform_asm
1759     xmm_clobbers
1760 "
1761
1762 TYPES_LIST="
1763     socklen_t
1764     struct_addrinfo
1765     struct_group_source_req
1766     struct_ip_mreq_source
1767     struct_ipv6_mreq
1768     struct_pollfd
1769     struct_rusage_ru_maxrss
1770     struct_sctp_event_subscribe
1771     struct_sockaddr_in6
1772     struct_sockaddr_sa_len
1773     struct_sockaddr_storage
1774     struct_stat_st_mtim_tv_nsec
1775     struct_v4l2_frmivalenum_discrete
1776 "
1777
1778 HAVE_LIST="
1779     $ARCH_EXT_LIST
1780     $(add_suffix _external $ARCH_EXT_LIST)
1781     $(add_suffix _inline   $ARCH_EXT_LIST)
1782     $ARCH_FEATURES
1783     $ATOMICS_LIST
1784     $BUILTIN_LIST
1785     $HAVE_LIST_CMDLINE
1786     $HAVE_LIST_PUB
1787     $HEADERS_LIST
1788     $INTRINSICS_LIST
1789     $MATH_FUNCS
1790     $SYSTEM_FUNCS
1791     $THREADS_LIST
1792     $TOOLCHAIN_FEATURES
1793     $TYPES_LIST
1794     atomics_native
1795     dos_paths
1796     dxva2api_cobj
1797     dxva2_lib
1798     libc_msvcrt
1799     libdc1394_1
1800     libdc1394_2
1801     makeinfo
1802     perl
1803     pod2man
1804     sdl
1805     texi2html
1806     threads
1807     vdpau_x11
1808     xlib
1809 "
1810
1811 # options emitted with CONFIG_ prefix but not available on the command line
1812 CONFIG_EXTRA="
1813     aandcttables
1814     ac3dsp
1815     audio_frame_queue
1816     audiodsp
1817     blockdsp
1818     bswapdsp
1819     cabac
1820     dvprofile
1821     exif
1822     fdctdsp
1823     frame_thread_encoder
1824     gcrypt
1825     golomb
1826     gplv3
1827     h263dsp
1828     h264chroma
1829     h264dsp
1830     h264pred
1831     h264qpel
1832     hpeldsp
1833     huffman
1834     huffyuvdsp
1835     huffyuvencdsp
1836     idctdsp
1837     iirfilter
1838     intrax8
1839     lgplv3
1840     llauddsp
1841     llviddsp
1842     lpc
1843     me_cmp
1844     mpeg_er
1845     mpegaudio
1846     mpegaudiodsp
1847     mpegvideo
1848     mpegvideoenc
1849     nettle
1850     pixblockdsp
1851     qpeldsp
1852     rangecoder
1853     riffdec
1854     riffenc
1855     rtpdec
1856     rtpenc_chain
1857     sinewin
1858     startcode
1859     tpeldsp
1860     videodsp
1861     vp3dsp
1862 "
1863
1864 CMDLINE_SELECT="
1865     $ARCH_EXT_LIST
1866     $CONFIG_LIST
1867     $HAVE_LIST_CMDLINE
1868     $THREADS_LIST
1869     asm
1870     cross_compile
1871     debug
1872     extra_warnings
1873     logging
1874     lto
1875     optimizations
1876     rpath
1877     stripping
1878 "
1879
1880 PATHS_LIST="
1881     bindir
1882     datadir
1883     docdir
1884     incdir
1885     libdir
1886     mandir
1887     prefix
1888     shlibdir
1889 "
1890
1891 CMDLINE_SET="
1892     $PATHS_LIST
1893     ar
1894     arch
1895     as
1896     assert_level
1897     build_suffix
1898     cc
1899     cpu
1900     cross_prefix
1901     cxx
1902     dep_cc
1903     doxygen
1904     extra_version
1905     gas
1906     host_cc
1907     host_cflags
1908     host_ld
1909     host_ldflags
1910     host_libs
1911     host_os
1912     install
1913     ld
1914     logfile
1915     malloc_prefix
1916     nm
1917     optflags
1918     pkg_config
1919     pkg_config_flags
1920     progs_suffix
1921     random_seed
1922     ranlib
1923     samples
1924     strip
1925     sws_max_filter_size
1926     sysinclude
1927     sysroot
1928     target_exec
1929     target_os
1930     target_path
1931     target_samples
1932     tempprefix
1933     toolchain
1934     valgrind
1935     yasmexe
1936 "
1937
1938 CMDLINE_APPEND="
1939     extra_cflags
1940     extra_cxxflags
1941     host_cppflags
1942 "
1943
1944 # code dependency declarations
1945
1946 # architecture extensions
1947
1948 armv5te_deps="arm"
1949 armv6_deps="arm"
1950 armv6t2_deps="arm"
1951 armv8_deps="aarch64"
1952 neon_deps_any="aarch64 arm"
1953 intrinsics_neon_deps="neon"
1954 vfp_deps_any="aarch64 arm"
1955 vfpv3_deps="vfp"
1956 setend_deps="arm"
1957
1958 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1959
1960 mipsfpu_deps="mips"
1961 mips32r2_deps="mips"
1962 mipsdspr1_deps="mips"
1963 mipsdspr2_deps="mips"
1964
1965 altivec_deps="ppc"
1966 ppc4xx_deps="ppc"
1967 vsx_deps="ppc"
1968
1969 cpunop_deps="i686"
1970 x86_64_select="i686"
1971 x86_64_suggest="fast_cmov"
1972
1973 amd3dnow_deps="mmx"
1974 amd3dnowext_deps="amd3dnow"
1975 i686_deps="x86"
1976 mmx_deps="x86"
1977 mmxext_deps="mmx"
1978 sse_deps="mmxext"
1979 sse2_deps="sse"
1980 sse3_deps="sse2"
1981 ssse3_deps="sse3"
1982 sse4_deps="ssse3"
1983 sse42_deps="sse4"
1984 avx_deps="sse42"
1985 xop_deps="avx"
1986 fma3_deps="avx"
1987 fma4_deps="avx"
1988 avx2_deps="avx"
1989
1990 mmx_external_deps="yasm"
1991 mmx_inline_deps="inline_asm"
1992 mmx_suggest="mmx_external mmx_inline"
1993
1994 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1995     eval dep=\$${ext}_deps
1996     eval ${ext}_external_deps='"${dep}_external"'
1997     eval ${ext}_inline_deps='"${dep}_inline"'
1998     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1999 done
2000
2001 aligned_stack_if_any="aarch64 ppc x86"
2002 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2003 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2004 fast_unaligned_if_any="aarch64 ppc x86"
2005 simd_align_16_if_any="altivec neon sse"
2006
2007 # system capabilities
2008
2009 symver_if_any="symver_asm_label symver_gnu_asm"
2010
2011 # threading support
2012 atomics_gcc_if="sync_val_compare_and_swap"
2013 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2014 atomics_win32_if="MemoryBarrier"
2015 atomics_native_if_any="$ATOMICS_LIST"
2016 w32threads_deps="atomics_native"
2017 threads_if_any="$THREADS_LIST"
2018
2019 # subsystems
2020 dct_select="rdft"
2021 error_resilience_select="me_cmp"
2022 frame_thread_encoder_deps="encoders threads"
2023 intrax8_select="error_resilience"
2024 mdct_select="fft"
2025 rdft_select="fft"
2026 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2027 mpeg_er_select="error_resilience"
2028 mpegaudio_select="mpegaudiodsp"
2029 mpegaudiodsp_select="dct"
2030 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp videodsp"
2031 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2032
2033 # decoders / encoders
2034 aac_decoder_select="mdct sinewin"
2035 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2036 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2037 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2038 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2039 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2040 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2041 aic_decoder_select="golomb idctdsp"
2042 alac_encoder_select="lpc"
2043 als_decoder_select="bswapdsp"
2044 amrnb_decoder_select="lsp"
2045 amrwb_decoder_select="lsp"
2046 amv_decoder_select="sp5x_decoder exif"
2047 amv_encoder_select="aandcttables mpegvideoenc"
2048 ape_decoder_select="bswapdsp llauddsp"
2049 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2050 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2051 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2052 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2053 atrac1_decoder_select="mdct sinewin"
2054 atrac3_decoder_select="mdct"
2055 atrac3p_decoder_select="mdct sinewin"
2056 avrn_decoder_select="exif"
2057 bink_decoder_select="blockdsp hpeldsp"
2058 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
2059 binkaudio_rdft_decoder_select="mdct rdft sinewin"
2060 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2061 cllc_decoder_select="bswapdsp"
2062 comfortnoise_encoder_select="lpc"
2063 cook_decoder_select="audiodsp mdct sinewin"
2064 cscd_decoder_select="lzo"
2065 cscd_decoder_suggest="zlib"
2066 dca_decoder_select="mdct"
2067 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2068 dnxhd_decoder_select="blockdsp idctdsp"
2069 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2070 dvvideo_decoder_select="dvprofile idctdsp"
2071 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2072 dxa_decoder_select="zlib"
2073 eac3_decoder_select="ac3_decoder"
2074 eac3_encoder_select="ac3_encoder"
2075 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2076 eatgq_decoder_select="aandcttables"
2077 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2078 exr_decoder_select="zlib"
2079 ffv1_decoder_select="golomb rangecoder"
2080 ffv1_encoder_select="rangecoder"
2081 ffvhuff_decoder_select="huffyuv_decoder"
2082 ffvhuff_encoder_select="huffyuv_encoder"
2083 fic_decoder_select="golomb"
2084 flac_decoder_select="golomb"
2085 flac_encoder_select="bswapdsp golomb lpc"
2086 flashsv_decoder_select="zlib"
2087 flashsv_encoder_select="zlib"
2088 flashsv2_encoder_select="zlib"
2089 flashsv2_decoder_select="zlib"
2090 flv_decoder_select="h263_decoder"
2091 flv_encoder_select="h263_encoder"
2092 fourxm_decoder_select="blockdsp bswapdsp"
2093 fraps_decoder_select="bswapdsp huffman"
2094 g2m_decoder_select="blockdsp idctdsp zlib"
2095 g729_decoder_select="audiodsp"
2096 h261_decoder_select="mpeg_er mpegvideo"
2097 h261_encoder_select="aandcttables mpegvideoenc"
2098 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2099 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2100 h263i_decoder_select="h263_decoder"
2101 h263p_encoder_select="h263_encoder"
2102 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2103 h264_decoder_suggest="error_resilience"
2104 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2105 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2106 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2107 iac_decoder_select="imc_decoder"
2108 imc_decoder_select="bswapdsp fft mdct sinewin"
2109 indeo3_decoder_select="hpeldsp"
2110 interplay_video_decoder_select="hpeldsp"
2111 jpegls_decoder_select="golomb mjpeg_decoder"
2112 jpegls_encoder_select="golomb"
2113 jv_decoder_select="blockdsp"
2114 lagarith_decoder_select="huffyuvdsp"
2115 ljpeg_encoder_select="aandcttables idctdsp"
2116 loco_decoder_select="golomb"
2117 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2118 metasound_decoder_select="lsp mdct sinewin"
2119 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2120 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp"
2121 mjpeg_encoder_select="aandcttables mpegvideoenc"
2122 mjpegb_decoder_select="mjpeg_decoder"
2123 mlp_decoder_select="mlp_parser"
2124 motionpixels_decoder_select="bswapdsp"
2125 mp1_decoder_select="mpegaudio"
2126 mp1float_decoder_select="mpegaudio"
2127 mp2_decoder_select="mpegaudio"
2128 mp2float_decoder_select="mpegaudio"
2129 mp3_decoder_select="mpegaudio"
2130 mp3adu_decoder_select="mpegaudio"
2131 mp3adufloat_decoder_select="mpegaudio"
2132 mp3float_decoder_select="mpegaudio"
2133 mp3on4_decoder_select="mpegaudio"
2134 mp3on4float_decoder_select="mpegaudio"
2135 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2136 mpc8_decoder_select="mpegaudiodsp"
2137 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2138 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2139 mpegvideo_decoder_select="error_resilience mpeg_er mpegvideo"
2140 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2141 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2142 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2143 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2144 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2145 mpeg4_encoder_select="h263_encoder"
2146 msmpeg4v1_decoder_select="h263_decoder"
2147 msmpeg4v2_decoder_select="h263_decoder"
2148 msmpeg4v2_encoder_select="h263_encoder"
2149 msmpeg4v3_decoder_select="h263_decoder"
2150 msmpeg4v3_encoder_select="h263_encoder"
2151 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2152 mxpeg_decoder_select="mjpeg_decoder"
2153 nellymoser_decoder_select="mdct sinewin"
2154 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2155 nuv_decoder_select="idctdsp lzo"
2156 on2avc_decoder_select="mdct"
2157 opus_decoder_deps="swresample"
2158 png_decoder_select="zlib"
2159 png_encoder_select="huffyuvencdsp zlib"
2160 prores_decoder_select="blockdsp idctdsp"
2161 prores_encoder_select="fdctdsp"
2162 qcelp_decoder_select="lsp"
2163 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2164 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2165 ra_144_decoder_select="audiodsp"
2166 ralf_decoder_select="golomb"
2167 rawvideo_decoder_select="bswapdsp"
2168 rtjpeg_decoder_select="me_cmp"
2169 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2170 rv10_encoder_select="h263_encoder"
2171 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2172 rv20_encoder_select="h263_encoder"
2173 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2174 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2175 shorten_decoder_select="golomb"
2176 sipr_decoder_select="lsp"
2177 snow_decoder_select="dwt h264qpel hpeldsp rangecoder"
2178 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2179 sonic_decoder_select="golomb rangecoder"
2180 sonic_encoder_select="golomb rangecoder"
2181 sonic_ls_encoder_select="golomb rangecoder"
2182 sp5x_decoder_select="mjpeg_decoder"
2183 svq1_decoder_select="hpeldsp"
2184 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2185 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2186 svq3_decoder_suggest="zlib"
2187 tak_decoder_select="audiodsp"
2188 theora_decoder_select="vp3_decoder"
2189 thp_decoder_select="mjpeg_decoder"
2190 tiff_decoder_suggest="zlib"
2191 tiff_encoder_suggest="zlib"
2192 truehd_decoder_select="mlp_parser"
2193 truemotion2_decoder_select="bswapdsp"
2194 truespeech_decoder_select="bswapdsp"
2195 tscc_decoder_select="zlib"
2196 twinvq_decoder_select="mdct lsp sinewin"
2197 utvideo_decoder_select="bswapdsp"
2198 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2199 vble_decoder_select="huffyuvdsp"
2200 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
2201 vc1image_decoder_select="vc1_decoder"
2202 vorbis_decoder_select="mdct"
2203 vorbis_encoder_select="mdct"
2204 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2205 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2206 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2207 vp6a_decoder_select="vp6_decoder"
2208 vp6f_decoder_select="vp6_decoder"
2209 vp7_decoder_select="h264pred videodsp"
2210 vp8_decoder_select="h264pred videodsp"
2211 vp9_decoder_select="videodsp vp9_parser"
2212 webp_decoder_select="vp8_decoder"
2213 wmalossless_decoder_select="llauddsp"
2214 wmapro_decoder_select="mdct sinewin"
2215 wmav1_decoder_select="mdct sinewin"
2216 wmav1_encoder_select="mdct sinewin"
2217 wmav2_decoder_select="mdct sinewin"
2218 wmav2_encoder_select="mdct sinewin"
2219 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2220 wmv1_decoder_select="h263_decoder"
2221 wmv1_encoder_select="h263_encoder"
2222 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2223 wmv2_encoder_select="h263_encoder"
2224 wmv3_decoder_select="vc1_decoder"
2225 wmv3image_decoder_select="wmv3_decoder"
2226 zerocodec_decoder_select="zlib"
2227 zlib_decoder_select="zlib"
2228 zlib_encoder_select="zlib"
2229 zmbv_decoder_select="zlib"
2230 zmbv_encoder_select="zlib"
2231
2232 # hardware accelerators
2233 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2234 dxva2_deps="dxva2api_h"
2235 vaapi_deps="va_va_h"
2236 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2237 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2238 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2239 xvmc_deps="X11_extensions_XvMClib_h"
2240
2241 h263_vaapi_hwaccel_deps="vaapi"
2242 h263_vaapi_hwaccel_select="h263_decoder"
2243 h263_vdpau_hwaccel_deps="vdpau"
2244 h263_vdpau_hwaccel_select="h263_decoder"
2245 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2246 h264_dxva2_hwaccel_deps="dxva2"
2247 h264_dxva2_hwaccel_select="h264_decoder"
2248 h264_vaapi_hwaccel_deps="vaapi"
2249 h264_vaapi_hwaccel_select="h264_decoder"
2250 h264_vda_decoder_deps="vda"
2251 h264_vda_decoder_select="h264_decoder"
2252 h264_vda_hwaccel_deps="vda"
2253 h264_vda_hwaccel_select="h264_decoder"
2254 h264_vda_old_hwaccel_deps="vda"
2255 h264_vda_old_hwaccel_select="h264_decoder"
2256 h264_vdpau_decoder_deps="vdpau"
2257 h264_vdpau_decoder_select="h264_decoder"
2258 h264_vdpau_hwaccel_deps="vdpau"
2259 h264_vdpau_hwaccel_select="h264_decoder"
2260 mpeg_vdpau_decoder_deps="vdpau"
2261 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2262 mpeg_xvmc_hwaccel_deps="xvmc"
2263 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2264 mpeg1_vdpau_decoder_deps="vdpau"
2265 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2266 mpeg1_vdpau_hwaccel_deps="vdpau"
2267 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2268 mpeg1_xvmc_hwaccel_deps="xvmc"
2269 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2270 mpeg2_crystalhd_decoder_select="crystalhd"
2271 mpeg2_dxva2_hwaccel_deps="dxva2"
2272 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2273 mpeg2_vaapi_hwaccel_deps="vaapi"
2274 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2275 mpeg2_vdpau_hwaccel_deps="vdpau"
2276 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2277 mpeg2_xvmc_hwaccel_deps="xvmc"
2278 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2279 mpeg4_crystalhd_decoder_select="crystalhd"
2280 mpeg4_vaapi_hwaccel_deps="vaapi"
2281 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2282 mpeg4_vdpau_decoder_deps="vdpau"
2283 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2284 mpeg4_vdpau_hwaccel_deps="vdpau"
2285 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2286 msmpeg4_crystalhd_decoder_select="crystalhd"
2287 vc1_crystalhd_decoder_select="crystalhd"
2288 vc1_dxva2_hwaccel_deps="dxva2"
2289 vc1_dxva2_hwaccel_select="vc1_decoder"
2290 vc1_vaapi_hwaccel_deps="vaapi"
2291 vc1_vaapi_hwaccel_select="vc1_decoder"
2292 vc1_vdpau_decoder_deps="vdpau"
2293 vc1_vdpau_decoder_select="vc1_decoder"
2294 vc1_vdpau_hwaccel_deps="vdpau"
2295 vc1_vdpau_hwaccel_select="vc1_decoder"
2296 wmv3_crystalhd_decoder_select="crystalhd"
2297 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2298 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2299 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2300 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2301
2302 # parsers
2303 h264_parser_select="h264_decoder"
2304 hevc_parser_select="hevc_decoder"
2305 mpegvideo_parser_select="mpegvideo"
2306 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2307 vc1_parser_select="mpegvideo startcode vc1_decoder"
2308
2309 # external libraries
2310 libaacplus_encoder_deps="libaacplus"
2311 libcelt_decoder_deps="libcelt"
2312 libfaac_encoder_deps="libfaac"
2313 libfaac_encoder_select="audio_frame_queue"
2314 libfdk_aac_decoder_deps="libfdk_aac"
2315 libfdk_aac_encoder_deps="libfdk_aac"
2316 libfdk_aac_encoder_select="audio_frame_queue"
2317 libgme_demuxer_deps="libgme"
2318 libgsm_decoder_deps="libgsm"
2319 libgsm_encoder_deps="libgsm"
2320 libgsm_ms_decoder_deps="libgsm"
2321 libgsm_ms_encoder_deps="libgsm"
2322 libilbc_decoder_deps="libilbc"
2323 libilbc_encoder_deps="libilbc"
2324 libmodplug_demuxer_deps="libmodplug"
2325 libmp3lame_encoder_deps="libmp3lame"
2326 libmp3lame_encoder_select="audio_frame_queue"
2327 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2328 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2329 libopencore_amrnb_encoder_select="audio_frame_queue"
2330 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2331 libopenjpeg_decoder_deps="libopenjpeg"
2332 libopenjpeg_encoder_deps="libopenjpeg"
2333 libopus_decoder_deps="libopus"
2334 libopus_encoder_deps="libopus"
2335 libopus_encoder_select="audio_frame_queue"
2336 libquvi_demuxer_deps="libquvi"
2337 libschroedinger_decoder_deps="libschroedinger"
2338 libschroedinger_encoder_deps="libschroedinger"
2339 libshine_encoder_deps="libshine"
2340 libshine_encoder_select="audio_frame_queue"
2341 libspeex_decoder_deps="libspeex"
2342 libspeex_encoder_deps="libspeex"
2343 libspeex_encoder_select="audio_frame_queue"
2344 libstagefright_h264_decoder_deps="libstagefright_h264"
2345 libtheora_encoder_deps="libtheora"
2346 libtwolame_encoder_deps="libtwolame"
2347 libvo_aacenc_encoder_deps="libvo_aacenc"
2348 libvo_aacenc_encoder_select="audio_frame_queue"
2349 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2350 libvorbis_decoder_deps="libvorbis"
2351 libvorbis_encoder_deps="libvorbis"
2352 libvorbis_encoder_select="audio_frame_queue"
2353 libvpx_vp8_decoder_deps="libvpx"
2354 libvpx_vp8_encoder_deps="libvpx"
2355 libvpx_vp9_decoder_deps="libvpx"
2356 libvpx_vp9_encoder_deps="libvpx"
2357 libwavpack_encoder_deps="libwavpack"
2358 libwebp_encoder_deps="libwebp"
2359 libx264_encoder_deps="libx264"
2360 libx264rgb_encoder_deps="libx264"
2361 libx265_encoder_deps="libx265"
2362 libxavs_encoder_deps="libxavs"
2363 libxvid_encoder_deps="libxvid"
2364 libutvideo_decoder_deps="libutvideo"
2365 libutvideo_encoder_deps="libutvideo"
2366 libzvbi_teletext_decoder_deps="libzvbi"
2367
2368 # demuxers / muxers
2369 ac3_demuxer_select="ac3_parser"
2370 asf_demuxer_select="riffdec"
2371 asf_muxer_select="riffenc"
2372 asf_stream_muxer_select="asf_muxer"
2373 avi_demuxer_select="riffdec exif"
2374 avi_muxer_select="riffenc"
2375 avisynth_demuxer_deps="avisynth"
2376 avisynth_demuxer_select="riffdec"
2377 caf_demuxer_select="riffdec"
2378 dirac_demuxer_select="dirac_parser"
2379 dts_demuxer_select="dca_parser"
2380 dtshd_demuxer_select="dca_parser"
2381 dv_demuxer_select="dvprofile"
2382 dv_muxer_select="dvprofile"
2383 dxa_demuxer_select="riffdec"
2384 eac3_demuxer_select="ac3_parser"
2385 f4v_muxer_select="mov_muxer"
2386 flac_demuxer_select="flac_parser"
2387 hds_muxer_select="flv_muxer"
2388 hls_muxer_select="mpegts_muxer"
2389 image2_alias_pix_demuxer_select="image2_demuxer"
2390 image2_brender_pix_demuxer_select="image2_demuxer"
2391 ipod_muxer_select="mov_muxer"
2392 ismv_muxer_select="mov_muxer"
2393 libnut_demuxer_deps="libnut"
2394 libnut_muxer_deps="libnut"
2395 matroska_audio_muxer_select="matroska_muxer"
2396 matroska_demuxer_select="riffdec"
2397 matroska_demuxer_suggest="bzlib lzo zlib"
2398 matroska_muxer_select="riffenc"
2399 mmf_muxer_select="riffenc"
2400 mov_demuxer_select="riffdec"
2401 mov_demuxer_suggest="zlib"
2402 mov_muxer_select="riffenc rtpenc_chain"
2403 mp3_demuxer_select="mpegaudio_parser"
2404 mp4_muxer_select="mov_muxer"
2405 mpegts_muxer_select="adts_muxer latm_muxer"
2406 mpegtsraw_demuxer_select="mpegts_demuxer"
2407 mxf_d10_muxer_select="mxf_muxer"
2408 nut_muxer_select="riffenc"
2409 nuv_demuxer_select="riffdec"
2410 ogg_demuxer_select="golomb"
2411 psp_muxer_select="mov_muxer"
2412 rtp_demuxer_select="sdp_demuxer"
2413 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2414 rtsp_demuxer_select="http_protocol rtpdec"
2415 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2416 sap_demuxer_select="sdp_demuxer"
2417 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2418 sdp_demuxer_select="rtpdec"
2419 smoothstreaming_muxer_select="ismv_muxer"
2420 spdif_muxer_select="aac_parser"
2421 tak_demuxer_select="tak_parser"
2422 tg2_muxer_select="mov_muxer"
2423 tgp_muxer_select="mov_muxer"
2424 vobsub_demuxer_select="mpegps_demuxer"
2425 w64_demuxer_select="wav_demuxer"
2426 w64_muxer_select="wav_muxer"
2427 wav_demuxer_select="riffdec"
2428 wav_muxer_select="riffenc"
2429 webm_muxer_select="riffenc"
2430 wtv_demuxer_select="riffdec"
2431 wtv_muxer_select="riffenc"
2432 xmv_demuxer_select="riffdec"
2433 xwma_demuxer_select="riffdec"
2434
2435 # indevs / outdevs
2436 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2437 alsa_outdev_deps="alsa_asoundlib_h"
2438 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2439 avfoundation_indev_select="avfoundation"
2440 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2441 caca_outdev_deps="libcaca"
2442 decklink_outdev_deps="decklink pthreads"
2443 decklink_outdev_extralibs="-lstdc++"
2444 dshow_indev_deps="IBaseFilter"
2445 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2446 dv1394_indev_deps="dv1394"
2447 dv1394_indev_select="dv_demuxer"
2448 fbdev_indev_deps="linux_fb_h"
2449 fbdev_outdev_deps="linux_fb_h"
2450 gdigrab_indev_deps="CreateDIBSection"
2451 gdigrab_indev_extralibs="-lgdi32"
2452 gdigrab_indev_select="bmp_decoder"
2453 iec61883_indev_deps="libiec61883"
2454 jack_indev_deps="jack_jack_h sem_timedwait"
2455 lavfi_indev_deps="avfilter"
2456 libcdio_indev_deps="libcdio"
2457 libdc1394_indev_deps="libdc1394"
2458 libv4l2_indev_deps="libv4l2"
2459 openal_indev_deps="openal"
2460 opengl_outdev_deps="opengl"
2461 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2462 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2463 pulse_indev_deps="libpulse"
2464 pulse_outdev_deps="libpulse"
2465 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2466 qtkit_indev_select="qtkit"
2467 sdl_outdev_deps="sdl"
2468 sndio_indev_deps="sndio_h"
2469 sndio_outdev_deps="sndio_h"
2470 v4l_indev_deps="linux_videodev_h"
2471 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2472 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2473 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2474 vfwcap_indev_extralibs="-lavicap32"
2475 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2476 xv_outdev_extralibs="-lXv -lX11 -lXext"
2477 x11grab_indev_deps="x11grab"
2478
2479 # protocols
2480 bluray_protocol_deps="libbluray"
2481 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2482 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2483 ffrtmpcrypt_protocol_select="tcp_protocol"
2484 ffrtmphttp_protocol_deps="!librtmp_protocol"
2485 ffrtmphttp_protocol_select="http_protocol"
2486 ftp_protocol_select="tcp_protocol"
2487 gopher_protocol_select="network"
2488 http_protocol_select="tcp_protocol"
2489 httpproxy_protocol_select="tcp_protocol"
2490 https_protocol_select="tls_protocol"
2491 icecast_protocol_select="http_protocol"
2492 librtmp_protocol_deps="librtmp"
2493 librtmpe_protocol_deps="librtmp"
2494 librtmps_protocol_deps="librtmp"
2495 librtmpt_protocol_deps="librtmp"
2496 librtmpte_protocol_deps="librtmp"
2497 libsmbclient_protocol_deps="libsmbclient gplv3"
2498 libssh_protocol_deps="libssh"
2499 mmsh_protocol_select="http_protocol"
2500 mmst_protocol_select="network"
2501 rtmp_protocol_deps="!librtmp_protocol"
2502 rtmp_protocol_select="tcp_protocol"
2503 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2504 rtmps_protocol_deps="!librtmp_protocol"
2505 rtmps_protocol_select="tls_protocol"
2506 rtmpt_protocol_select="ffrtmphttp_protocol"
2507 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2508 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2509 rtp_protocol_select="udp_protocol"
2510 sctp_protocol_deps="struct_sctp_event_subscribe"
2511 sctp_protocol_select="network"
2512 srtp_protocol_select="rtp_protocol"
2513 tcp_protocol_select="network"
2514 tls_protocol_deps_any="openssl gnutls"
2515 tls_protocol_select="tcp_protocol"
2516 udp_protocol_select="network"
2517 unix_protocol_deps="sys_un_h"
2518 unix_protocol_select="network"
2519
2520 # filters
2521 aconvert_filter_deps="swresample"
2522 amovie_filter_deps="avcodec avformat"
2523 aresample_filter_deps="swresample"
2524 ass_filter_deps="libass"
2525 asyncts_filter_deps="avresample"
2526 atempo_filter_deps="avcodec"
2527 atempo_filter_select="rdft"
2528 azmq_filter_deps="libzmq"
2529 blackframe_filter_deps="gpl"
2530 boxblur_filter_deps="gpl"
2531 bs2b_filter_deps="libbs2b"
2532 colormatrix_filter_deps="gpl"
2533 cropdetect_filter_deps="gpl"
2534 delogo_filter_deps="gpl"
2535 deshake_filter_select="pixelutils"
2536 drawtext_filter_deps="libfreetype"
2537 ebur128_filter_deps="gpl"
2538 flite_filter_deps="libflite"
2539 frei0r_filter_deps="frei0r dlopen"
2540 frei0r_filter_extralibs='$ldl'
2541 frei0r_src_filter_deps="frei0r dlopen"
2542 frei0r_src_filter_extralibs='$ldl'
2543 geq_filter_deps="gpl"
2544 histeq_filter_deps="gpl"
2545 hqdn3d_filter_deps="gpl"
2546 interlace_filter_deps="gpl"
2547 kerndeint_filter_deps="gpl"
2548 ladspa_filter_deps="ladspa dlopen"
2549 ladspa_filter_extralibs='$ldl'
2550 mcdeint_filter_deps="avcodec gpl"
2551 movie_filter_deps="avcodec avformat"
2552 mp_filter_deps="gpl avcodec swscale inline_asm"
2553 mpdecimate_filter_deps="gpl"
2554 mpdecimate_filter_select="pixelutils"
2555 mptestsrc_filter_deps="gpl"
2556 negate_filter_deps="lut_filter"
2557 perspective_filter_deps="gpl"
2558 ocv_filter_deps="libopencv"
2559 owdenoise_filter_deps="gpl"
2560 pan_filter_deps="swresample"
2561 phase_filter_deps="gpl"
2562 pp_filter_deps="gpl postproc"
2563 pullup_filter_deps="gpl"
2564 removelogo_filter_deps="avcodec avformat swscale"
2565 resample_filter_deps="avresample"
2566 sab_filter_deps="gpl swscale"
2567 scale_filter_deps="swscale"
2568 select_filter_select="pixelutils"
2569 smartblur_filter_deps="gpl swscale"
2570 showspectrum_filter_deps="avcodec"
2571 showspectrum_filter_select="rdft"
2572 spp_filter_deps="gpl avcodec"
2573 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2574 stereo3d_filter_deps="gpl"
2575 subtitles_filter_deps="avformat avcodec libass"
2576 super2xsai_filter_deps="gpl"
2577 tinterlace_filter_deps="gpl"
2578 vidstabdetect_filter_deps="libvidstab"
2579 vidstabtransform_filter_deps="libvidstab"
2580 pixfmts_super2xsai_test_deps="super2xsai_filter"
2581 tinterlace_merge_test_deps="tinterlace_filter"
2582 tinterlace_pad_test_deps="tinterlace_filter"
2583 zmq_filter_deps="libzmq"
2584 zoompan_filter_deps="swscale"
2585
2586 # examples
2587 avio_reading="avformat avcodec avutil"
2588 avcodec_example_deps="avcodec avutil"
2589 demuxing_decoding_example_deps="avcodec avformat avutil"
2590 extract_mvs_example_deps="avcodec avformat avutil"
2591 filter_audio_example_deps="avfilter avutil"
2592 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2593 filtering_video_example_deps="avfilter avcodec avformat avutil"
2594 metadata_example_deps="avformat avutil"
2595 muxing_example_deps="avcodec avformat avutil swscale"
2596 remuxing_example_deps="avcodec avformat avutil"
2597 resampling_audio_example_deps="avutil swresample"
2598 scaling_video_example_deps="avutil swscale"
2599 transcode_aac_example_deps="avcodec avformat swresample"
2600 transcoding_example_deps="avfilter avcodec avformat avutil"
2601
2602 # libraries, in linking order
2603 avcodec_deps="avutil"
2604 avdevice_deps="avformat avcodec avutil"
2605 avfilter_deps="avutil"
2606 avformat_deps="avcodec avutil"
2607 avresample_deps="avutil"
2608 postproc_deps="avutil gpl"
2609 swresample_deps="avutil"
2610 swscale_deps="avutil"
2611
2612 # programs
2613 ffmpeg_deps="avcodec avfilter avformat swresample"
2614 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2615                null_filter
2616                setpts_filter trim_filter"
2617 ffplay_deps="avcodec avformat swscale swresample sdl"
2618 ffplay_libs='$sdl_libs'
2619 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2620 ffprobe_deps="avcodec avformat"
2621 ffserver_deps="avformat fork sarestart"
2622 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2623
2624 # documentation
2625 podpages_deps="perl"
2626 manpages_deps="perl pod2man"
2627 htmlpages_deps="perl texi2html"
2628 txtpages_deps="perl makeinfo"
2629 doc_deps_any="manpages htmlpages podpages txtpages"
2630
2631 # default parameters
2632
2633 logfile="config.log"
2634
2635 # installation paths
2636 prefix_default="/usr/local"
2637 bindir_default='${prefix}/bin'
2638 datadir_default='${prefix}/share/ffmpeg'
2639 docdir_default='${prefix}/share/doc/ffmpeg'
2640 incdir_default='${prefix}/include'
2641 libdir_default='${prefix}/lib'
2642 mandir_default='${prefix}/share/man'
2643 shlibdir_default="$libdir_default"
2644
2645 # toolchain
2646 ar_default="ar"
2647 cc_default="gcc"
2648 cxx_default="g++"
2649 host_cc_default="gcc"
2650 cp_f="cp -f"
2651 doxygen_default="doxygen"
2652 install="install"
2653 ln_s="ln -s -f"
2654 nm_default="nm -g"
2655 objformat="elf"
2656 pkg_config_default=pkg-config
2657 ranlib_default="ranlib"
2658 strip_default="strip"
2659 yasmexe_default="yasm"
2660 windres_default="windres"
2661
2662 # OS
2663 target_os_default=$(tolower $(uname -s))
2664 host_os=$target_os_default
2665
2666 # machine
2667 if test "$target_os_default" = aix; then
2668     arch_default=$(uname -p)
2669     strip_default="strip -X32_64"
2670 else
2671     arch_default=$(uname -m)
2672 fi
2673 cpu="generic"
2674 intrinsics="none"
2675
2676 # configurable options
2677 enable $PROGRAM_LIST
2678 enable $DOCUMENT_LIST
2679 enable $EXAMPLE_LIST
2680 enable $(filter_out avresample $LIBRARY_LIST)
2681 enable stripping
2682
2683 enable asm
2684 enable debug
2685 enable doc
2686 enable optimizations
2687 enable runtime_cpudetect
2688 enable safe_bitstream_reader
2689 enable static
2690 enable swscale_alpha
2691
2692 sws_max_filter_size_default=256
2693 set_default sws_max_filter_size
2694
2695 # Enable hwaccels by default.
2696 enable dxva2 vaapi vda vdpau xvmc
2697 enable xlib
2698
2699 # build settings
2700 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2701 LIBPREF="lib"
2702 LIBSUF=".a"
2703 FULLNAME='$(NAME)$(BUILDSUF)'
2704 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2705 SLIBPREF="lib"
2706 SLIBSUF=".so"
2707 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2708 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2709 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2710 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2711 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2712 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2713
2714 asflags_filter=echo
2715 cflags_filter=echo
2716 ldflags_filter=echo
2717
2718 AS_C='-c'
2719 AS_O='-o $@'
2720 CC_C='-c'
2721 CC_E='-E -o $@'
2722 CC_O='-o $@'
2723 CXX_C='-c'
2724 CXX_O='-o $@'
2725 LD_O='-o $@'
2726 LD_LIB='-l%'
2727 LD_PATH='-L'
2728 HOSTCC_C='-c'
2729 HOSTCC_E='-E -o $@'
2730 HOSTCC_O='-o $@'
2731 HOSTLD_O='-o $@'
2732
2733 host_libs='-lm'
2734 host_cflags_filter=echo
2735 host_ldflags_filter=echo
2736
2737 target_path='$(CURDIR)'
2738
2739 # since the object filename is not given with the -MM flag, the compiler
2740 # is only able to print the basename, and we must add the path ourselves
2741 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2742 DEPFLAGS='-MM'
2743
2744 # find source path
2745 if test -f configure; then
2746     source_path=.
2747 else
2748     source_path=$(cd $(dirname "$0"); pwd)
2749     echo "$source_path" | grep -q '[[:blank:]]' &&
2750         die "Out of tree builds are impossible with whitespace in source path."
2751     test -e "$source_path/config.h" &&
2752         die "Out of tree builds are impossible with config.h in source dir."
2753 fi
2754
2755 for v in "$@"; do
2756     r=${v#*=}
2757     l=${v%"$r"}
2758     r=$(sh_quote "$r")
2759     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2760 done
2761
2762 find_things(){
2763     thing=$1
2764     pattern=$2
2765     file=$source_path/$3
2766     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2767 }
2768
2769 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2770 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2771 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2772 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2773 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2774 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2775 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2776 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2777 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2778 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2779 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2780
2781 ALL_COMPONENTS="
2782     $BSF_LIST
2783     $DECODER_LIST
2784     $DEMUXER_LIST
2785     $ENCODER_LIST
2786     $FILTER_LIST
2787     $HWACCEL_LIST
2788     $INDEV_LIST
2789     $MUXER_LIST
2790     $OUTDEV_LIST
2791     $PARSER_LIST
2792     $PROTOCOL_LIST
2793 "
2794
2795 for n in $COMPONENT_LIST; do
2796     v=$(toupper ${n%s})_LIST
2797     eval enable \$$v
2798     eval ${n}_if_any="\$$v"
2799 done
2800
2801 enable $ARCH_EXT_LIST
2802
2803 die_unknown(){
2804     echo "Unknown option \"$1\"."
2805     echo "See $0 --help for available options."
2806     exit 1
2807 }
2808
2809 print_3_columns() {
2810     cat | tr ' ' '\n' | sort | pr -r -3 -t
2811 }
2812
2813 show_list() {
2814     suffix=_$1
2815     shift
2816     echo $* | sed s/$suffix//g | print_3_columns
2817     exit 0
2818 }
2819
2820 rand_list(){
2821     IFS=', '
2822     set -- $*
2823     unset IFS
2824     for thing; do
2825         comp=${thing%:*}
2826         prob=${thing#$comp}
2827         prob=${prob#:}
2828         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2829         echo "prob ${prob:-0.5}"
2830         printf '%s\n' $comp
2831     done
2832 }
2833
2834 do_random(){
2835     action=$1
2836     shift
2837     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2838     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2839 }
2840
2841 for opt do
2842     optval="${opt#*=}"
2843     case "$opt" in
2844         --extra-ldflags=*)
2845             add_ldflags $optval
2846         ;;
2847         --extra-ldexeflags=*)
2848             add_ldexeflags $optval
2849         ;;
2850         --extra-libs=*)
2851             add_extralibs $optval
2852         ;;
2853         --disable-devices)
2854             disable $INDEV_LIST $OUTDEV_LIST
2855         ;;
2856         --enable-debug=*)
2857             debuglevel="$optval"
2858         ;;
2859         --disable-programs)
2860             disable $PROGRAM_LIST
2861         ;;
2862         --disable-everything)
2863             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2864         ;;
2865         --disable-all)
2866             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2867             disable $LIBRARY_LIST $PROGRAM_LIST doc
2868         ;;
2869         --enable-random|--disable-random)
2870             action=${opt%%-random}
2871             do_random ${action#--} $COMPONENT_LIST
2872         ;;
2873         --enable-random=*|--disable-random=*)
2874             action=${opt%%-random=*}
2875             do_random ${action#--} $optval
2876         ;;
2877         --enable-*=*|--disable-*=*)
2878             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2879             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2880             eval list=\$$(toupper $thing)_LIST
2881             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2882             list=$(filter "$name" $list)
2883             [ "$list" = "" ] && warn "Option $opt did not match anything"
2884             $action $list
2885         ;;
2886         --enable-?*|--disable-?*)
2887             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2888             if is_in $option $COMPONENT_LIST; then
2889                 test $action = disable && action=unset
2890                 eval $action \$$(toupper ${option%s})_LIST
2891             elif is_in $option $CMDLINE_SELECT; then
2892                 $action $option
2893             else
2894                 die_unknown $opt
2895             fi
2896         ;;
2897         --list-*)
2898             NAME="${opt#--list-}"
2899             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2900             NAME=${NAME%s}
2901             eval show_list $NAME \$$(toupper $NAME)_LIST
2902         ;;
2903         --help|-h) show_help
2904         ;;
2905         --fatal-warnings) enable fatal_warnings
2906         ;;
2907         *)
2908             optname="${opt%%=*}"
2909             optname="${optname#--}"
2910             optname=$(echo "$optname" | sed 's/-/_/g')
2911             if is_in $optname $CMDLINE_SET; then
2912                 eval $optname='$optval'
2913             elif is_in $optname $CMDLINE_APPEND; then
2914                 append $optname "$optval"
2915             else
2916                 die_unknown $opt
2917             fi
2918         ;;
2919     esac
2920 done
2921
2922 disabled logging && logfile=/dev/null
2923
2924 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2925 set >> $logfile
2926
2927 test -n "$cross_prefix" && enable cross_compile
2928
2929 if enabled cross_compile; then
2930     test -n "$arch" && test -n "$target_os" ||
2931         die "Must specify target arch and OS when cross-compiling"
2932 fi
2933
2934 ar_default="${cross_prefix}${ar_default}"
2935 cc_default="${cross_prefix}${cc_default}"
2936 cxx_default="${cross_prefix}${cxx_default}"
2937 nm_default="${cross_prefix}${nm_default}"
2938 pkg_config_default="${cross_prefix}${pkg_config_default}"
2939 ranlib_default="${cross_prefix}${ranlib_default}"
2940 strip_default="${cross_prefix}${strip_default}"
2941 windres_default="${cross_prefix}${windres_default}"
2942
2943 sysinclude_default="${sysroot}/usr/include"
2944
2945 test -n "$valgrind" && toolchain="valgrind-memcheck"
2946
2947 case "$toolchain" in
2948     clang-asan)
2949         cc_default="clang"
2950         add_cflags  -fsanitize=address
2951         add_ldflags -fsanitize=address
2952     ;;
2953     clang-tsan)
2954         cc_default="clang"
2955         add_cflags  -fsanitize=thread -pie
2956         add_ldflags -fsanitize=thread -pie
2957     ;;
2958     clang-usan)
2959         cc_default="clang"
2960         add_cflags  -fsanitize=undefined
2961         add_ldflags -fsanitize=undefined
2962     ;;
2963     gcc-asan)
2964         cc_default="gcc"
2965         add_cflags  -fsanitize=address
2966         add_ldflags -fsanitize=address
2967     ;;
2968     gcc-tsan)
2969         cc_default="gcc"
2970         add_cflags  -fsanitize=thread -pie -fPIC
2971         add_ldflags -fsanitize=thread -pie -fPIC
2972     ;;
2973     gcc-usan)
2974         cc_default="gcc"
2975         add_cflags  -fsanitize=undefined
2976         add_ldflags -fsanitize=undefined
2977     ;;
2978     valgrind-massif)
2979         target_exec_default=${valgrind:-"valgrind"}
2980         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"
2981     ;;
2982     valgrind-memcheck)
2983         target_exec_default=${valgrind:-"valgrind"}
2984         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2985     ;;
2986     msvc)
2987         # Check whether the current MSVC version needs the C99 converter.
2988         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2989         # support enough of C99 to build ffmpeg. Default to the new
2990         # behaviour if the regexp was unable to match anything, since this
2991         # successfully parses the version number of existing supported
2992         # versions that require the converter (MSVC 2010 and 2012).
2993         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2994         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2995             cc_default="cl"
2996         else
2997             cc_default="c99wrap cl"
2998         fi
2999         ld_default="link"
3000         nm_default="dumpbin -symbols"
3001         ar_default="lib"
3002         target_os_default="win32"
3003         # Use a relative path for TMPDIR. This makes sure all the
3004         # ffconf temp files are written with a relative path, avoiding
3005         # issues with msys/win32 path conversion for MSVC parameters
3006         # such as -Fo<file> or -out:<file>.
3007         TMPDIR=.
3008     ;;
3009     icl)
3010         cc_default="icl"
3011         ld_default="xilink"
3012         nm_default="dumpbin -symbols"
3013         ar_default="xilib"
3014         target_os_default="win32"
3015         TMPDIR=.
3016     ;;
3017     gcov)
3018         add_cflags  -fprofile-arcs -ftest-coverage
3019         add_ldflags -fprofile-arcs -ftest-coverage
3020     ;;
3021     hardened)
3022         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
3023         add_ldflags -Wl,-z,relro -Wl,-z,now
3024     ;;
3025     ?*)
3026         die "Unknown toolchain $toolchain"
3027     ;;
3028 esac
3029
3030 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3031     target_exec target_os yasmexe
3032 enabled cross_compile || host_cc_default=$cc
3033 set_default host_cc
3034
3035 if ! $pkg_config --version >/dev/null 2>&1; then
3036     warn "$pkg_config not found, library detection may fail."
3037     pkg_config=false
3038 fi
3039
3040 if test $doxygen != $doxygen_default && \
3041   ! $doxygen --version >/dev/null 2>&1; then
3042     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3043 fi
3044
3045 exesuf() {
3046     case $1 in
3047         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3048     esac
3049 }
3050
3051 EXESUF=$(exesuf $target_os)
3052 HOSTEXESUF=$(exesuf $host_os)
3053
3054 # set temporary file name
3055 : ${TMPDIR:=$TEMPDIR}
3056 : ${TMPDIR:=$TMP}
3057 : ${TMPDIR:=/tmp}
3058
3059 if [ -n "$tempprefix" ] ; then
3060     mktemp(){
3061         echo $tempprefix.${HOSTNAME}.${UID}
3062     }
3063 elif ! check_cmd mktemp -u XXXXXX; then
3064     # simple replacement for missing mktemp
3065     # NOT SAFE FOR GENERAL USE
3066     mktemp(){
3067         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3068     }
3069 fi
3070
3071 tmpfile(){
3072     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3073         (set -C; exec > $tmp) 2>/dev/null ||
3074         die "Unable to create temporary file in $TMPDIR."
3075     append TMPFILES $tmp
3076     eval $1=$tmp
3077 }
3078
3079 trap 'rm -f -- $TMPFILES' EXIT
3080
3081 tmpfile TMPASM .asm
3082 tmpfile TMPC   .c
3083 tmpfile TMPCPP .cpp
3084 tmpfile TMPE   $EXESUF
3085 tmpfile TMPH   .h
3086 tmpfile TMPM   .m
3087 tmpfile TMPO   .o
3088 tmpfile TMPS   .S
3089 tmpfile TMPSH  .sh
3090 tmpfile TMPV   .ver
3091
3092 unset -f mktemp
3093
3094 chmod +x $TMPE
3095
3096 # make sure we can execute files in $TMPDIR
3097 cat > $TMPSH 2>> $logfile <<EOF
3098 #! /bin/sh
3099 EOF
3100 chmod +x $TMPSH >> $logfile 2>&1
3101 if ! $TMPSH >> $logfile 2>&1; then
3102     cat <<EOF
3103 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3104 variable to another directory and make sure that it is not mounted noexec.
3105 EOF
3106     die "Sanity test failed."
3107 fi
3108
3109 armasm_flags(){
3110     for flag; do
3111         case $flag in
3112             # Filter out MSVC cl.exe options from cflags that shouldn't
3113             # be passed to gas-preprocessor
3114             -M[TD]*)                                            ;;
3115             *)                  echo $flag                      ;;
3116         esac
3117    done
3118 }
3119
3120 ccc_flags(){
3121     for flag; do
3122         case $flag in
3123             -std=c99)           echo -c99                       ;;
3124             -mcpu=*)            echo -arch ${flag#*=}           ;;
3125             -mieee)             echo -ieee                      ;;
3126             -O*|-fast)          echo $flag                      ;;
3127             -fno-math-errno)    echo -assume nomath_errno       ;;
3128             -g)                 echo -g3                        ;;
3129             -Wall)              echo -msg_enable level2         ;;
3130             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3131             -Wl,*)              echo $flag                      ;;
3132             -f*|-W*)                                            ;;
3133             *)                  echo $flag                      ;;
3134         esac
3135    done
3136 }
3137
3138 cparser_flags(){
3139     for flag; do
3140         case $flag in
3141             -Wno-switch)             echo -Wno-switch-enum ;;
3142             -Wno-format-zero-length) ;;
3143             -Wdisabled-optimization) ;;
3144             -Wno-pointer-sign)       echo -Wno-other ;;
3145             *)                       echo $flag ;;
3146         esac
3147     done
3148 }
3149
3150 msvc_common_flags(){
3151     for flag; do
3152         case $flag in
3153             # In addition to specifying certain flags under the compiler
3154             # specific filters, they must be specified here as well or else the
3155             # generic catch all at the bottom will print the original flag.
3156             -Wall)                ;;
3157             -std=c99)             ;;
3158             # Common flags
3159             -fomit-frame-pointer) ;;
3160             -g)                   echo -Z7 ;;
3161             -fno-math-errno)      ;;
3162             -fno-common)          ;;
3163             -fno-signed-zeros)    ;;
3164             -fPIC)                ;;
3165             -mthumb)              ;;
3166             -march=*)             ;;
3167             -lz)                  echo zlib.lib ;;
3168             -lavifil32)           echo vfw32.lib ;;
3169             -lavicap32)           echo vfw32.lib user32.lib ;;
3170             -l*)                  echo ${flag#-l}.lib ;;
3171             *)                    echo $flag ;;
3172         esac
3173     done
3174 }
3175
3176 msvc_flags(){
3177     msvc_common_flags "$@"
3178     for flag; do
3179         case $flag in
3180             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3181                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3182                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3183                                        -wd4554 \
3184                                        -wd4273 ;;
3185         esac
3186     done
3187 }
3188
3189 icl_flags(){
3190     msvc_common_flags "$@"
3191     for flag; do
3192         case $flag in
3193             # Despite what Intel's documentation says -Wall, which is supported
3194             # on Windows, does enable remarks so disable them here.
3195             -Wall)                echo $flag -Qdiag-disable:remark ;;
3196             -std=c99)             echo -Qstd=c99 ;;
3197             -flto)                echo -ipo ;;
3198         esac
3199     done
3200 }
3201
3202 icc_flags(){
3203     for flag; do
3204         case $flag in
3205             -flto)                echo -ipo ;;
3206             *)                    echo $flag ;;
3207         esac
3208     done
3209 }
3210
3211 pgi_flags(){
3212     for flag; do
3213         case $flag in
3214             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3215             -fomit-frame-pointer) echo -Mnoframe ;;
3216             -g)                   echo -gopt ;;
3217             *)                    echo $flag ;;
3218         esac
3219     done
3220 }
3221
3222 suncc_flags(){
3223     for flag; do
3224         case $flag in
3225             -march=*|-mcpu=*)
3226                 case "${flag#*=}" in
3227                     native)                   echo -xtarget=native       ;;
3228                     v9|niagara)               echo -xarch=sparc          ;;
3229                     ultrasparc)               echo -xarch=sparcvis       ;;
3230                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3231                     i586|pentium)             echo -xchip=pentium        ;;
3232                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3233                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3234                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3235                     pentium4*)          echo -xtarget=pentium4           ;;
3236                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3237                     *-sse3)             echo -xarch=sse3                 ;;
3238                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3239                     bonnell)                   echo -xarch=ssse3         ;;
3240                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3241                     westmere)                  echo -xtarget=westmere    ;;
3242                     silvermont)                echo -xarch=sse4_2        ;;
3243                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3244                     core-avx*|ivybridge|haswell|broadwell)
3245                                                echo -xarch=avx           ;;
3246                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3247                     btver1)                    echo -xarch=amdsse4a      ;;
3248                     btver2|bdver*)             echo -xarch=avx           ;;
3249                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3250                     k8|opteron|athlon64|athlon-fx)
3251                                                echo -xarch=sse2a         ;;
3252                     athlon*)                   echo -xarch=pentium_proa  ;;
3253                 esac
3254                 ;;
3255             -std=c99)             echo -xc99              ;;
3256             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3257             -fPIC)                echo -KPIC -xcode=pic32 ;;
3258             -W*,*)                echo $flag              ;;
3259             -f*-*|-W*|-mimpure-text)                      ;;
3260             -shared)              echo -G                 ;;
3261             *)                    echo $flag              ;;
3262         esac
3263     done
3264 }
3265
3266 tms470_flags(){
3267     for flag; do
3268         case $flag in
3269             -march=*|-mcpu=*)
3270                 case "${flag#*=}" in
3271                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3272                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3273                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3274                     armv6*|arm11*)          echo -mv=6   ;;
3275                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3276                                             echo -mv=5e  ;;
3277                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3278                 esac
3279                 ;;
3280             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3281             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3282             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3283             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3284             -msoft-float)   echo --float_support=vfplib       ;;
3285             -O[0-3]|-mf=*)  echo $flag                        ;;
3286             -g)             echo -g -mn                       ;;
3287             -pds=*)         echo $flag                        ;;
3288             -D*|-I*)        echo $flag                        ;;
3289             --gcc|--abi=*)  echo $flag                        ;;
3290             -me)            echo $flag                        ;;
3291         esac
3292     done
3293 }
3294
3295 probe_cc(){
3296     pfx=$1
3297     _cc=$2
3298
3299     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3300     unset _ld_o _ldflags _ld_lib _ld_path
3301     unset _depflags _DEPCMD _DEPFLAGS
3302     _flags_filter=echo
3303
3304     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3305         true # no-op to avoid reading stdin in following checks
3306     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3307         _type=llvm_gcc
3308         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3309         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3310         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3311         _cflags_speed='-O3'
3312         _cflags_size='-Os'
3313     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3314         _type=gcc
3315         gcc_version=$($_cc --version | head -n1)
3316         gcc_basever=$($_cc -dumpversion)
3317         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3318         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3319         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3320         if ! $_cc -dumpversion | grep -q '^2\.'; then
3321             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3322         fi
3323         _cflags_speed='-O3'
3324         _cflags_size='-Os'
3325     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3326         _type=icc
3327         _ident=$($_cc --version | head -n1)
3328         _depflags='-MMD'
3329         _cflags_speed='-O3'
3330         _cflags_size='-Os'
3331         _cflags_noopt='-O1'
3332         _flags_filter=icc_flags
3333     elif $_cc -v 2>&1 | grep -q xlc; then
3334         _type=xlc
3335         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3336         _cflags_speed='-O5'
3337         _cflags_size='-O5 -qcompact'
3338     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3339         _type=ccc
3340         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3341         _DEPFLAGS='-M'
3342         _cflags_speed='-fast'
3343         _cflags_size='-O1'
3344         _flags_filter=ccc_flags
3345     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3346         test -d "$sysroot" || die "No valid sysroot specified."
3347         _type=armcc
3348         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3349         armcc_conf="$PWD/armcc.conf"
3350         $_cc --arm_linux_configure                 \
3351              --arm_linux_config_file="$armcc_conf" \
3352              --configure_sysroot="$sysroot"        \
3353              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3354              die "Error creating armcc configuration file."
3355         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3356         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3357         as_default="${cross_prefix}gcc"
3358         _depflags='-MMD'
3359         _cflags_speed='-O3'
3360         _cflags_size='-Os'
3361     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3362         _type=tms470
3363         _ident=$($_cc -version | head -n1 | tr -s ' ')
3364         _flags='--gcc --abi=eabi -me'
3365         _cc_e='-ppl -fe=$@'
3366         _cc_o='-fe=$@'
3367         _depflags='-ppa -ppd=$(@:.o=.d)'
3368         _cflags_speed='-O3 -mf=5'
3369         _cflags_size='-O3 -mf=2'
3370         _flags_filter=tms470_flags
3371     elif $_cc -v 2>&1 | grep -q clang; then
3372         _type=clang
3373         _ident=$($_cc --version | head -n1)
3374         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3375         _cflags_speed='-O3'
3376         _cflags_size='-Os'
3377     elif $_cc -V 2>&1 | grep -q Sun; then
3378         _type=suncc
3379         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3380         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3381         _DEPFLAGS='-xM1 -xc99'
3382         _ldflags='-std=c99'
3383         _cflags_speed='-O5'
3384         _cflags_size='-O5 -xspace'
3385         _flags_filter=suncc_flags
3386     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3387         _type=pathscale
3388         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3389         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3390         _cflags_speed='-O2'
3391         _cflags_size='-Os'
3392         _flags_filter='filter_out -Wdisabled-optimization'
3393     elif $_cc -v 2>&1 | grep -q Open64; then
3394         _type=open64
3395         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3396         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3397         _cflags_speed='-O2'
3398         _cflags_size='-Os'
3399         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3400     elif $_cc -V 2>&1 | grep -q Portland; then
3401         _type=pgi
3402         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3403         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3404         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3405         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3406         _cflags_noopt="-O"
3407         _flags_filter=pgi_flags
3408     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3409         _type=armasm
3410         _ident=$($_cc | head -n1)
3411         # 4509: "This form of conditional instruction is deprecated"
3412         _flags="-nologo -ignore 4509"
3413         _flags_filter=armasm_flags
3414     elif $_cc 2>&1 | grep -q Microsoft; then
3415         _type=msvc
3416         _ident=$($cc 2>&1 | head -n1)
3417         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3418         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3419         _cflags_speed="-O2"
3420         _cflags_size="-O1"
3421         if $_cc 2>&1 | grep -q Linker; then
3422             _ld_o='-out:$@'
3423         else
3424             _ld_o='-Fe$@'
3425         fi
3426         _cc_o='-Fo$@'
3427         _cc_e='-P -Fi$@'
3428         _flags_filter=msvc_flags
3429         _ld_lib='lib%.a'
3430         _ld_path='-libpath:'
3431         _flags='-nologo'
3432         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3433         if [ $pfx = hostcc ]; then
3434             append _cflags -Dsnprintf=_snprintf
3435         fi
3436         disable stripping
3437     elif $_cc 2>&1 | grep -q Intel; then
3438         _type=icl
3439         _ident=$($cc 2>&1 | head -n1)
3440         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3441         # Not only is O3 broken on 13.x+ but it is slower on all previous
3442         # versions (tested) as well.
3443         _cflags_speed="-O2"
3444         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3445         if $_cc 2>&1 | grep -q Linker; then
3446             _ld_o='-out:$@'
3447         else
3448             _ld_o='-Fe$@'
3449         fi
3450         _cc_o='-Fo$@'
3451         _cc_e='-P'
3452         _flags_filter=icl_flags
3453         _ld_lib='lib%.a'
3454         _ld_path='-libpath:'
3455         # -Qdiag-error to make icl error when seeing certain unknown arguments
3456         _flags='-nologo -Qdiag-error:4044,10157'
3457         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3458         # with MSVC which enables it by default.
3459         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3460         if [ $pfx = hostcc ]; then
3461             append _cflags -Dsnprintf=_snprintf
3462         fi
3463     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3464         _type=cparser
3465         _ident=$($_cc --version | head -n1)
3466         _depflags='-MMD'
3467         _cflags_speed='-O4'
3468         _cflags_size='-O2'
3469         _flags_filter=cparser_flags
3470     fi
3471
3472     eval ${pfx}_type=\$_type
3473     eval ${pfx}_ident=\$_ident
3474 }
3475
3476 set_ccvars(){
3477     eval ${1}_C=\${_cc_c-\${${1}_C}}
3478     eval ${1}_E=\${_cc_e-\${${1}_E}}
3479     eval ${1}_O=\${_cc_o-\${${1}_O}}
3480
3481     if [ -n "$_depflags" ]; then
3482         eval ${1}_DEPFLAGS=\$_depflags
3483     else
3484         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3485         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3486         eval DEP${1}FLAGS=\$_flags
3487     fi
3488 }
3489
3490 probe_cc cc "$cc"
3491 cflags_filter=$_flags_filter
3492 cflags_speed=$_cflags_speed
3493 cflags_size=$_cflags_size
3494 cflags_noopt=$_cflags_noopt
3495 add_cflags $_flags $_cflags
3496 cc_ldflags=$_ldflags
3497 set_ccvars CC
3498
3499 probe_cc hostcc "$host_cc"
3500 host_cflags_filter=$_flags_filter
3501 add_host_cflags  $_flags $_cflags
3502 set_ccvars HOSTCC
3503
3504 test -n "$cc_type" && enable $cc_type ||
3505     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3506
3507 : ${as_default:=$cc}
3508 : ${dep_cc_default:=$cc}
3509 : ${ld_default:=$cc}
3510 : ${host_ld_default:=$host_cc}
3511 set_default ar as dep_cc ld host_ld windres
3512
3513 probe_cc as "$as"
3514 asflags_filter=$_flags_filter
3515 add_asflags $_flags $_cflags
3516 set_ccvars AS
3517
3518 probe_cc ld "$ld"
3519 ldflags_filter=$_flags_filter
3520 add_ldflags $_flags $_ldflags
3521 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3522 LD_O=${_ld_o-$LD_O}
3523 LD_LIB=${_ld_lib-$LD_LIB}
3524 LD_PATH=${_ld_path-$LD_PATH}
3525
3526 probe_cc hostld "$host_ld"
3527 host_ldflags_filter=$_flags_filter
3528 add_host_ldflags $_flags $_ldflags
3529 HOSTLD_O=${_ld_o-$HOSTLD_O}
3530
3531 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3532     probe_cc depcc "$dep_cc"
3533     CCDEP=${_DEPCMD:-$DEPCMD}
3534     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3535     DEPCCFLAGS=$_flags
3536 fi
3537
3538 if $ar 2>&1 | grep -q Microsoft; then
3539     arflags="-nologo"
3540     ar_o='-out:$@'
3541 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3542     arflags="rq"
3543     ar_o='$@'
3544 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3545     arflags='-Xany -r -c'
3546     ar_o='$@'
3547 else
3548     arflags="rc"
3549     ar_o='$@'
3550 fi
3551
3552 add_cflags $extra_cflags
3553 add_cxxflags $extra_cxxflags
3554 add_asflags $extra_cflags
3555
3556 if test -n "$sysroot"; then
3557     case "$cc_type" in
3558         gcc|llvm_gcc|clang)
3559             add_cppflags --sysroot="$sysroot"
3560             add_ldflags --sysroot="$sysroot"
3561 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3562             add_cppflags -isysroot "$sysroot"
3563             add_ldflags -isysroot "$sysroot"
3564         ;;
3565         tms470)
3566             add_cppflags -I"$sysinclude"
3567             add_ldflags  --sysroot="$sysroot"
3568         ;;
3569     esac
3570 fi
3571
3572 if test "$cpu" = host; then
3573     enabled cross_compile &&
3574         die "--cpu=host makes no sense when cross-compiling."
3575
3576     case "$cc_type" in
3577         gcc|llvm_gcc)
3578             check_native(){
3579                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3580                 sed -n "/cc1.*$1=/{
3581                             s/.*$1=\\([^ ]*\\).*/\\1/
3582                             p
3583                             q
3584                         }" $TMPE
3585             }
3586             cpu=$(check_native -march || check_native -mcpu)
3587         ;;
3588     esac
3589
3590     test "${cpu:-host}" = host &&
3591         die "--cpu=host not supported with compiler $cc"
3592 fi
3593
3594 # Deal with common $arch aliases
3595 case "$arch" in
3596     aarch64|arm64)
3597         arch="aarch64"
3598     ;;
3599     arm*|iPad*|iPhone*)
3600         arch="arm"
3601     ;;
3602     mips*|IP*)
3603         arch="mips"
3604     ;;
3605     parisc*|hppa*)
3606         arch="parisc"
3607     ;;
3608     "Power Macintosh"|ppc*|powerpc*)
3609         arch="ppc"
3610     ;;
3611     s390|s390x)
3612         arch="s390"
3613     ;;
3614     sh4|sh)
3615         arch="sh4"
3616     ;;
3617     sun4u|sparc*)
3618         arch="sparc"
3619     ;;
3620     tilegx|tile-gx)
3621         arch="tilegx"
3622     ;;
3623     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3624         arch="x86"
3625     ;;
3626 esac
3627
3628 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3629 enable $arch
3630
3631 # Add processor-specific flags
3632 if enabled aarch64; then
3633
3634     case $cpu in
3635         armv*)
3636             cpuflags="-march=$cpu"
3637         ;;
3638         *)
3639             cpuflags="-mcpu=$cpu"
3640         ;;
3641     esac
3642
3643 elif enabled alpha; then
3644
3645     cpuflags="-mcpu=$cpu"
3646
3647 elif enabled arm; then
3648
3649     check_arm_arch() {
3650         check_cpp_condition stddef.h \
3651             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3652             $cpuflags
3653     }
3654
3655     probe_arm_arch() {
3656         if   check_arm_arch 4;        then echo armv4;
3657         elif check_arm_arch 4T;       then echo armv4t;
3658         elif check_arm_arch 5;        then echo armv5;
3659         elif check_arm_arch 5E;       then echo armv5e;
3660         elif check_arm_arch 5T;       then echo armv5t;
3661         elif check_arm_arch 5TE;      then echo armv5te;
3662         elif check_arm_arch 5TEJ;     then echo armv5te;
3663         elif check_arm_arch 6;        then echo armv6;
3664         elif check_arm_arch 6J;       then echo armv6j;
3665         elif check_arm_arch 6K;       then echo armv6k;
3666         elif check_arm_arch 6Z;       then echo armv6z;
3667         elif check_arm_arch 6ZK;      then echo armv6zk;
3668         elif check_arm_arch 6T2;      then echo armv6t2;
3669         elif check_arm_arch 7;        then echo armv7;
3670         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3671         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3672         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3673         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3674         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3675         fi
3676     }
3677
3678     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3679
3680     case $cpu in
3681         armv*)
3682             cpuflags="-march=$cpu"
3683             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3684         ;;
3685         *)
3686             cpuflags="-mcpu=$cpu"
3687             case $cpu in
3688                 cortex-a*)                               subarch=armv7a  ;;
3689                 cortex-r*)                               subarch=armv7r  ;;
3690                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3691                 arm11*)                                  subarch=armv6   ;;
3692                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3693                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3694                 *)                             subarch=$(probe_arm_arch) ;;
3695             esac
3696         ;;
3697     esac
3698
3699     case "$subarch" in
3700         armv5t*)    enable fast_clz                ;;
3701         armv[6-8]*)
3702             enable fast_clz
3703             disabled fast_unaligned || enable fast_unaligned
3704             ;;
3705     esac
3706
3707 elif enabled avr32; then
3708
3709     case $cpu in
3710         ap7[02]0[0-2])
3711             subarch="avr32_ap"
3712             cpuflags="-mpart=$cpu"
3713         ;;
3714         ap)
3715             subarch="avr32_ap"
3716             cpuflags="-march=$cpu"
3717         ;;
3718         uc3[ab]*)
3719             subarch="avr32_uc"
3720             cpuflags="-mcpu=$cpu"
3721         ;;
3722         uc)
3723             subarch="avr32_uc"
3724             cpuflags="-march=$cpu"
3725         ;;
3726     esac
3727
3728 elif enabled bfin; then
3729
3730     cpuflags="-mcpu=$cpu"
3731
3732 elif enabled mips; then
3733
3734     cpuflags="-march=$cpu"
3735
3736     case $cpu in
3737         24kc)
3738             disable mipsfpu
3739             disable mipsdspr1
3740             disable mipsdspr2
3741         ;;
3742         24kf*)
3743             disable mipsdspr1
3744             disable mipsdspr2
3745         ;;
3746         24kec|34kc|1004kc)
3747             disable mipsfpu
3748             disable mipsdspr2
3749         ;;
3750         24kef*|34kf*|1004kf*)
3751             disable mipsdspr2
3752         ;;
3753         74kc)
3754             disable mipsfpu
3755         ;;
3756     esac
3757
3758 elif enabled ppc; then
3759
3760     disable ldbrx
3761     disable vsx
3762
3763     case $(tolower $cpu) in
3764         601|ppc601|powerpc601)
3765             cpuflags="-mcpu=601"
3766             disable altivec
3767         ;;
3768         603*|ppc603*|powerpc603*)
3769             cpuflags="-mcpu=603"
3770             disable altivec
3771         ;;
3772         604*|ppc604*|powerpc604*)
3773             cpuflags="-mcpu=604"
3774             disable altivec
3775         ;;
3776         g3|75*|ppc75*|powerpc75*)
3777             cpuflags="-mcpu=750"
3778             disable altivec
3779         ;;
3780         g4|745*|ppc745*|powerpc745*)
3781             cpuflags="-mcpu=7450"
3782         ;;
3783         74*|ppc74*|powerpc74*)
3784             cpuflags="-mcpu=7400"
3785         ;;
3786         g5|970|ppc970|powerpc970)
3787             cpuflags="-mcpu=970"
3788         ;;
3789         power[3-8]*)
3790             cpuflags="-mcpu=$cpu"
3791         ;;
3792         cell)
3793             cpuflags="-mcpu=cell"
3794             enable ldbrx
3795         ;;
3796         e500mc)
3797             cpuflags="-mcpu=e500mc"
3798             disable altivec
3799         ;;
3800         e500v2)
3801             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3802             disable altivec
3803             disable dcbzl
3804         ;;
3805         e500)
3806             cpuflags="-mcpu=8540 -mhard-float"
3807             disable altivec
3808             disable dcbzl
3809         ;;
3810     esac
3811
3812 elif enabled sparc; then
3813
3814     case $cpu in
3815         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3816             cpuflags="-mcpu=$cpu"
3817         ;;
3818         ultrasparc*|niagara[234])
3819             cpuflags="-mcpu=$cpu"
3820         ;;
3821     esac
3822
3823 elif enabled x86; then
3824
3825     case $cpu in
3826         i[345]86|pentium)
3827             cpuflags="-march=$cpu"
3828             disable mmx
3829         ;;
3830         # targets that do NOT support nopl and conditional mov (cmov)
3831         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3832             cpuflags="-march=$cpu"
3833             disable i686
3834         ;;
3835         # targets that do support nopl and conditional mov (cmov)
3836         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3837         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3838             cpuflags="-march=$cpu"
3839             enable i686
3840             enable fast_cmov
3841         ;;
3842         # targets that do support conditional mov but on which it's slow
3843         pentium4|pentium4m|prescott|nocona)
3844             cpuflags="-march=$cpu"
3845             enable i686
3846             disable fast_cmov
3847         ;;
3848     esac
3849
3850 fi
3851
3852 if [ "$cpu" != generic ]; then
3853     add_cflags  $cpuflags
3854     add_asflags $cpuflags
3855 fi
3856
3857 # compiler sanity check
3858 check_exec <<EOF
3859 int main(void){ return 0; }
3860 EOF
3861 if test "$?" != 0; then
3862     echo "$cc is unable to create an executable file."
3863     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3864         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3865         echo "Only do this if you know what cross compiling means."
3866     fi
3867     die "C compiler test failed."
3868 fi
3869
3870 add_cppflags -D_ISOC99_SOURCE
3871 add_cxxflags -D__STDC_CONSTANT_MACROS
3872 check_cflags -std=c99
3873 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3874 #include <stdlib.h>
3875 EOF
3876 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3877 #include <stdlib.h>
3878 EOF
3879
3880 add_host_cppflags -D_ISOC99_SOURCE
3881 check_host_cflags -std=c99
3882 check_host_cflags -Wall
3883 check_host_cflags -O3
3884
3885 check_64bit(){
3886     arch32=$1
3887     arch64=$2
3888     expr=$3
3889     check_code cc "" "int test[2*($expr) - 1]" &&
3890         subarch=$arch64 || subarch=$arch32
3891 }
3892
3893 case "$arch" in
3894     aarch64|alpha|ia64)
3895         spic=$shared
3896     ;;
3897     mips)
3898         check_64bit mips mips64 '_MIPS_SIM > 1'
3899         spic=$shared
3900     ;;
3901     parisc)
3902         check_64bit parisc parisc64 'sizeof(void *) > 4'
3903         spic=$shared
3904     ;;
3905     ppc)
3906         check_64bit ppc ppc64 'sizeof(void *) > 4'
3907         spic=$shared
3908     ;;
3909     s390)
3910         check_64bit s390 s390x 'sizeof(void *) > 4'
3911         spic=$shared
3912     ;;
3913     sparc)
3914         check_64bit sparc sparc64 'sizeof(void *) > 4'
3915         spic=$shared
3916     ;;
3917     x86)
3918         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3919         if test "$subarch" = "x86_64"; then
3920             spic=$shared
3921         fi
3922     ;;
3923     ppc)
3924         check_cc <<EOF && subarch="ppc64"
3925         int test[(int)sizeof(char*) - 7];
3926 EOF
3927     ;;
3928 esac
3929
3930 enable $subarch
3931 enabled spic && enable_weak pic
3932
3933 # OS specific
3934 case $target_os in
3935     aix)
3936         SHFLAGS=-shared
3937         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3938         enabled shared && add_ldflags -Wl,-brtl
3939         ;;
3940     android)
3941         disable symver
3942         SLIB_INSTALL_NAME='$(SLIBNAME)'
3943         SLIB_INSTALL_LINKS=
3944         # soname not set on purpose
3945         SHFLAGS=-shared
3946         ;;
3947     haiku)
3948         prefix_default="/boot/common"
3949         network_extralibs="-lnetwork"
3950         host_libs=
3951         ;;
3952     sunos)
3953         SHFLAGS='-shared -Wl,-h,$$(@F)'
3954         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3955         network_extralibs="-lsocket -lnsl"
3956         # When using suncc to build, the Solaris linker will mark
3957         # an executable with each instruction set encountered by
3958         # the Solaris assembler.  As our libraries contain their own
3959         # guards for processor-specific code, instead suppress
3960         # generation of the HWCAPS ELF section on Solaris x86 only.
3961         enabled_all suncc x86 &&
3962             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3963             add_ldflags -Wl,-M,mapfile
3964         nm_default='nm -P -g'
3965         ;;
3966     netbsd)
3967         disable symver
3968         oss_indev_extralibs="-lossaudio"
3969         oss_outdev_extralibs="-lossaudio"
3970         enabled gcc || check_ldflags -Wl,-zmuldefs
3971         ;;
3972     openbsd|bitrig)
3973         disable symver
3974         SHFLAGS='-shared'
3975         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3976         SLIB_INSTALL_LINKS=
3977         oss_indev_extralibs="-lossaudio"
3978         oss_outdev_extralibs="-lossaudio"
3979         ;;
3980     dragonfly)
3981         disable symver
3982         ;;
3983     freebsd)
3984         ;;
3985     bsd/os)
3986         add_extralibs -lpoll -lgnugetopt
3987         strip="strip -d"
3988         ;;
3989     darwin)
3990         enabled ppc && add_asflags -force_cpusubtype_ALL
3991         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3992         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3993         strip="${strip} -x"
3994         add_ldflags -Wl,-dynamic,-search_paths_first
3995         SLIBSUF=".dylib"
3996         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3997         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3998         objformat="macho"
3999         enabled x86_64 && objformat="macho64"
4000         enabled_any pic shared ||
4001             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4002         ;;
4003     mingw32*)
4004         if test $target_os = "mingw32ce"; then
4005             disable network
4006         else
4007             target_os=mingw32
4008         fi
4009         LIBTARGET=i386
4010         if enabled x86_64; then
4011             LIBTARGET="i386:x86-64"
4012         elif enabled arm; then
4013             LIBTARGET=arm-wince
4014         fi
4015         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4016         check_ldflags -Wl,--nxcompat
4017         check_ldflags -Wl,--dynamicbase
4018         shlibdir_default="$bindir_default"
4019         SLIBPREF=""
4020         SLIBSUF=".dll"
4021         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4022         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4023         dlltool="${cross_prefix}dlltool"
4024         if check_cmd lib.exe -list; then
4025             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4026             if enabled x86_64; then
4027                 LIBTARGET=x64
4028             fi
4029         elif check_cmd $dlltool --version; then
4030             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
4031         fi
4032         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4033         SLIB_INSTALL_LINKS=
4034         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4035         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4036         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4037         objformat="win32"
4038         ranlib=:
4039         enable dos_paths
4040         ;;
4041     win32|win64)
4042         disable symver
4043         if enabled shared; then
4044             # Link to the import library instead of the normal static library
4045             # for shared libs.
4046             LD_LIB='%.lib'
4047             # Cannot build both shared and static libs with MSVC or icl.
4048             disable static
4049         fi
4050         shlibdir_default="$bindir_default"
4051         SLIBPREF=""
4052         SLIBSUF=".dll"
4053         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4054         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4055         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4056         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4057         SLIB_INSTALL_LINKS=
4058         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4059         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4060         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4061         objformat="win32"
4062         ranlib=: