avcodec/motion_est: use 2x8x8 for interlaced qpel
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --fatal-warnings         fail if any configure warning is generated
82   --prefix=PREFIX          install in PREFIX [$prefix]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --enable-rpath           use rpath to allow installing libraries in paths
91                            not part of the dynamic linker search path
92
93 Licensing options:
94   --enable-gpl             allow use of GPL code, the resulting libs
95                            and binaries will be under GPL [no]
96   --enable-version3        upgrade (L)GPL to version 3 [no]
97   --enable-nonfree         allow use of nonfree code, the resulting libs
98                            and binaries will be unredistributable [no]
99
100 Configuration options:
101   --disable-static         do not build static libraries [no]
102   --enable-shared          build shared libraries [no]
103   --enable-small           optimize for size instead of speed
104   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
105   --enable-gray            enable full grayscale support (slower color)
106   --disable-swscale-alpha  disable alpha channel support in swscale
107   --disable-all            disable building components, libraries and programs
108   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
109   --enable-raise-major     increase major version numbers in sonames [no]
110
111 Program options:
112   --disable-programs       do not build command line programs
113   --disable-ffmpeg         disable ffmpeg build
114   --disable-ffplay         disable ffplay build
115   --disable-ffprobe        disable ffprobe build
116   --disable-ffserver       disable ffserver build
117
118 Documentation options:
119   --disable-doc            do not build documentation
120   --disable-htmlpages      do not build HTML documentation pages
121   --disable-manpages       do not build man documentation pages
122   --disable-podpages       do not build POD documentation pages
123   --disable-txtpages       do not build text documentation pages
124
125 Component options:
126   --disable-avdevice       disable libavdevice build
127   --disable-avcodec        disable libavcodec build
128   --disable-avformat       disable libavformat build
129   --disable-avutil         disable libavutil build
130   --disable-swresample     disable libswresample build
131   --disable-swscale        disable libswscale build
132   --disable-postproc       disable libpostproc build
133   --disable-avfilter       disable libavfilter build
134   --enable-avresample      enable libavresample build [no]
135   --disable-pthreads       disable pthreads [auto]
136   --disable-w32threads     disable Win32 threads [auto]
137   --disable-os2threads     disable OS/2 threads [auto]
138   --disable-network        disable network support [no]
139   --disable-dct            disable DCT code
140   --disable-dwt            disable DWT code
141   --disable-error-resilience disable error resilience code
142   --disable-lsp            disable LSP code
143   --disable-lzo            disable LZO decoder code
144   --disable-mdct           disable MDCT code
145   --disable-rdft           disable RDFT code
146   --disable-fft            disable FFT code
147
148 Hardware accelerators:
149   --disable-dxva2          disable DXVA2 code [autodetect]
150   --disable-vaapi          disable VAAPI code [autodetect]
151   --disable-vda            disable VDA code [autodetect]
152   --disable-vdpau          disable VDPAU code [autodetect]
153
154 Individual component options:
155   --disable-everything     disable all components listed below
156   --disable-encoder=NAME   disable encoder NAME
157   --enable-encoder=NAME    enable encoder NAME
158   --disable-encoders       disable all encoders
159   --disable-decoder=NAME   disable decoder NAME
160   --enable-decoder=NAME    enable decoder NAME
161   --disable-decoders       disable all decoders
162   --disable-hwaccel=NAME   disable hwaccel NAME
163   --enable-hwaccel=NAME    enable hwaccel NAME
164   --disable-hwaccels       disable all hwaccels
165   --disable-muxer=NAME     disable muxer NAME
166   --enable-muxer=NAME      enable muxer NAME
167   --disable-muxers         disable all muxers
168   --disable-demuxer=NAME   disable demuxer NAME
169   --enable-demuxer=NAME    enable demuxer NAME
170   --disable-demuxers       disable all demuxers
171   --enable-parser=NAME     enable parser NAME
172   --disable-parser=NAME    disable parser NAME
173   --disable-parsers        disable all parsers
174   --enable-bsf=NAME        enable bitstream filter NAME
175   --disable-bsf=NAME       disable bitstream filter NAME
176   --disable-bsfs           disable all bitstream filters
177   --enable-protocol=NAME   enable protocol NAME
178   --disable-protocol=NAME  disable protocol NAME
179   --disable-protocols      disable all protocols
180   --enable-indev=NAME      enable input device NAME
181   --disable-indev=NAME     disable input device NAME
182   --disable-indevs         disable input devices
183   --enable-outdev=NAME     enable output device NAME
184   --disable-outdev=NAME    disable output device NAME
185   --disable-outdevs        disable output devices
186   --disable-devices        disable all devices
187   --enable-filter=NAME     enable filter NAME
188   --disable-filter=NAME    disable filter NAME
189   --disable-filters        disable all filters
190
191 External library support:
192   --enable-avisynth        enable reading of AviSynth script files [no]
193   --disable-bzlib          disable bzlib [autodetect]
194   --enable-fontconfig      enable fontconfig
195   --enable-frei0r          enable frei0r video filtering
196   --enable-gnutls          enable gnutls [no]
197   --disable-iconv          disable iconv [autodetect]
198   --enable-ladspa          enable LADSPA audio filtering
199   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
200   --enable-libass          enable libass subtitles rendering [no]
201   --enable-libbluray       enable BluRay reading using libbluray [no]
202   --enable-libbs2b         enable bs2b DSP library [no]
203   --enable-libcaca         enable textual display using libcaca
204   --enable-libcelt         enable CELT decoding via libcelt [no]
205   --enable-libcdio         enable audio CD grabbing with libcdio
206   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
207                            and libraw1394 [no]
208   --enable-libfaac         enable AAC encoding via libfaac [no]
209   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
210   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
211   --enable-libfreetype     enable libfreetype [no]
212   --enable-libfribidi      enable libfribidi [no]
213   --enable-libgme          enable Game Music Emu via libgme [no]
214   --enable-libgsm          enable GSM de/encoding via libgsm [no]
215   --enable-libiec61883     enable iec61883 via libiec61883 [no]
216   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
217   --enable-libmodplug      enable ModPlug via libmodplug [no]
218   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
219   --enable-libnut          enable NUT (de)muxing via libnut,
220                            native (de)muxer exists [no]
221   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
222   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
223   --enable-libopencv       enable video filtering via libopencv [no]
224   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
225   --enable-libopus         enable Opus de/encoding via libopus [no]
226   --enable-libpulse        enable Pulseaudio input via libpulse [no]
227   --enable-libquvi         enable quvi input via libquvi [no]
228   --enable-librtmp         enable RTMP[E] support via librtmp [no]
229   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
230   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
231   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
232   --enable-libsoxr         enable Include libsoxr resampling [no]
233   --enable-libspeex        enable Speex de/encoding via libspeex [no]
234   --enable-libssh          enable SFTP protocol via libssh [no]
235   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
236   --enable-libtheora       enable Theora encoding via libtheora [no]
237   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
238   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
239   --enable-libv4l2         enable libv4l2/v4l-utils [no]
240   --enable-libvidstab      enable video stabilization using vid.stab [no]
241   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
242   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
243   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
244                            native implementation exists [no]
245   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
246   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
247   --enable-libwebp         enable WebP encoding via libwebp [no]
248   --enable-libx264         enable H.264 encoding via x264 [no]
249   --enable-libx265         enable HEVC encoding via x265 [no]
250   --enable-libxavs         enable AVS encoding via xavs [no]
251   --enable-libxvid         enable Xvid encoding via xvidcore,
252                            native MPEG-4/Xvid encoder exists [no]
253   --enable-libzmq          enable message passing via libzmq [no]
254   --enable-libzvbi         enable teletext support via libzvbi [no]
255   --enable-decklink        enable Blackmagick DeckLink output [no]
256   --enable-openal          enable OpenAL 1.1 capture support [no]
257   --enable-opencl          enable OpenCL code
258   --enable-opengl          enable OpenGL rendering [no]
259   --enable-openssl         enable openssl [no]
260   --enable-x11grab         enable X11 grabbing [no]
261   --disable-xlib           disable xlib [autodetect]
262   --disable-zlib           disable zlib [autodetect]
263
264 Toolchain options:
265   --arch=ARCH              select architecture [$arch]
266   --cpu=CPU                select the minimum required CPU (affects
267                            instruction selection, may crash on older CPUs)
268   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
269   --progs-suffix=SUFFIX    program name suffix []
270   --enable-cross-compile   assume a cross-compiler is used
271   --sysroot=PATH           root of cross-build tree
272   --sysinclude=PATH        location of cross-build system headers
273   --target-os=OS           compiler targets OS [$target_os]
274   --target-exec=CMD        command to run executables on target
275   --target-path=DIR        path to view of build directory on target
276   --target-samples=DIR     path to samples directory on target
277   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
278   --toolchain=NAME         set tool defaults according to NAME
279   --nm=NM                  use nm tool NM [$nm_default]
280   --ar=AR                  use archive tool AR [$ar_default]
281   --as=AS                  use assembler AS [$as_default]
282   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
283   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
284   --cc=CC                  use C compiler CC [$cc_default]
285   --cxx=CXX                use C compiler CXX [$cxx_default]
286   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
287   --ld=LD                  use linker LD [$ld_default]
288   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
289   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
290   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
291   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
292   --host-cc=HOSTCC         use host C compiler HOSTCC
293   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
294   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
295   --host-ld=HOSTLD         use host linker HOSTLD
296   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
297   --host-libs=HLIBS        use libs HLIBS when linking for host
298   --host-os=OS             compiler host OS [$target_os]
299   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
300   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
301   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
302   --extra-libs=ELIBS       add ELIBS [$ELIBS]
303   --extra-version=STRING   version string suffix []
304   --optflags=OPTFLAGS      override optimization-related compiler flags
305   --build-suffix=SUFFIX    library name suffix []
306   --enable-pic             build position-independent code
307   --enable-thumb           compile for Thumb instruction set
308   --enable-lto             use link-time optimization
309
310 Advanced options (experts only):
311   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
312   --disable-symver         disable symbol versioning
313   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
314   --disable-safe-bitstream-reader
315                            disable buffer boundary checking in bitreaders
316                            (faster, but may crash)
317   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
318   --enable-sram            allow use of on-chip SRAM
319   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
320
321 Optimization options (experts only):
322   --disable-asm            disable all assembly optimizations
323   --disable-altivec        disable AltiVec optimizations
324   --disable-amd3dnow       disable 3DNow! optimizations
325   --disable-amd3dnowext    disable 3DNow! extended optimizations
326   --disable-mmx            disable MMX optimizations
327   --disable-mmxext         disable MMXEXT optimizations
328   --disable-sse            disable SSE optimizations
329   --disable-sse2           disable SSE2 optimizations
330   --disable-sse3           disable SSE3 optimizations
331   --disable-ssse3          disable SSSE3 optimizations
332   --disable-sse4           disable SSE4 optimizations
333   --disable-sse42          disable SSE4.2 optimizations
334   --disable-avx            disable AVX optimizations
335   --disable-xop            disable XOP optimizations
336   --disable-fma3           disable FMA3 optimizations
337   --disable-fma4           disable FMA4 optimizations
338   --disable-avx2           disable AVX2 optimizations
339   --disable-armv5te        disable armv5te optimizations
340   --disable-armv6          disable armv6 optimizations
341   --disable-armv6t2        disable armv6t2 optimizations
342   --disable-vfp            disable VFP optimizations
343   --disable-neon           disable NEON optimizations
344   --disable-inline-asm     disable use of inline assembly
345   --disable-yasm           disable use of nasm/yasm assembly
346   --disable-mips32r2       disable MIPS32R2 optimizations
347   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
348   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
349   --disable-mipsfpu        disable floating point MIPS optimizations
350   --disable-fast-unaligned consider unaligned accesses slow
351
352 Developer options (useful when working on FFmpeg itself):
353   --disable-debug          disable debugging symbols
354   --enable-debug=LEVEL     set the debug level [$debuglevel]
355   --disable-optimizations  disable compiler optimizations
356   --enable-extra-warnings  enable more compiler warnings
357   --disable-stripping      disable stripping of executables and shared libraries
358   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
359                            2 causes a slowdown at runtime.
360   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
361   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
362                            leaks and errors, using the specified valgrind binary.
363                            Cannot be combined with --target-exec
364   --enable-ftrapv          Trap arithmetic overflows
365   --samples=PATH           location of test samples for FATE, if not set use
366                            \$FATE_SAMPLES at make invocation time.
367   --enable-neon-clobber-test check NEON registers for clobbering (should be
368                            used only for debugging purposes)
369   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
370                            should be used only for debugging purposes)
371   --enable-random          randomly enable/disable components
372   --disable-random
373   --enable-random=LIST     randomly enable/disable specific components or
374   --disable-random=LIST    component groups. LIST is a comma-separated list
375                            of NAME[:PROB] entries where NAME is a component
376                            (group) and PROB the probability associated with
377                            NAME (default 0.5).
378   --random-seed=VALUE      seed value for --enable/disable-random
379
380 NOTE: Object files are built at the place where configure is launched.
381 EOF
382   exit 0
383 }
384
385 quotes='""'
386
387 log(){
388     echo "$@" >> $logfile
389 }
390
391 log_file(){
392     log BEGIN $1
393     pr -n -t $1 >> $logfile
394     log END $1
395 }
396
397 echolog(){
398     log "$@"
399     echo "$@"
400 }
401
402 warn(){
403     log "WARNING: $*"
404     WARNINGS="${WARNINGS}WARNING: $*\n"
405 }
406
407 die(){
408     echolog "$@"
409     cat <<EOF
410
411 If you think configure made a mistake, make sure you are using the latest
412 version from Git.  If the latest version fails, report the problem to the
413 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
414 EOF
415     if disabled logging; then
416         cat <<EOF
417 Rerun configure with logging enabled (do not use --disable-logging), and
418 include the log this produces with your report.
419 EOF
420     else
421         cat <<EOF
422 Include the log file "$logfile" produced by configure as this will help
423 solve the problem.
424 EOF
425     fi
426     exit 1
427 }
428
429 # Avoid locale weirdness, besides we really just want to translate ASCII.
430 toupper(){
431     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
432 }
433
434 tolower(){
435     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
436 }
437
438 c_escape(){
439     echo "$*" | sed 's/["\\]/\\\0/g'
440 }
441
442 sh_quote(){
443     v=$(echo "$1" | sed "s/'/'\\\\''/g")
444     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
445     echo "$v"
446 }
447
448 cleanws(){
449     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
450 }
451
452 filter(){
453     pat=$1
454     shift
455     for v; do
456         eval "case $v in $pat) echo $v ;; esac"
457     done
458 }
459
460 filter_out(){
461     pat=$1
462     shift
463     for v; do
464         eval "case $v in $pat) ;; *) echo $v ;; esac"
465     done
466 }
467
468 map(){
469     m=$1
470     shift
471     for v; do eval $m; done
472 }
473
474 add_suffix(){
475     suffix=$1
476     shift
477     for v; do echo ${v}${suffix}; done
478 }
479
480 set_all(){
481     value=$1
482     shift
483     for var in $*; do
484         eval $var=$value
485     done
486 }
487
488 set_weak(){
489     value=$1
490     shift
491     for var; do
492         eval : \${$var:=$value}
493     done
494 }
495
496 sanitize_var_name(){
497     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
498 }
499
500 set_safe(){
501     var=$1
502     shift
503     eval $(sanitize_var_name "$var")='$*'
504 }
505
506 get_safe(){
507     eval echo \$$(sanitize_var_name "$1")
508 }
509
510 pushvar(){
511     for pvar in $*; do
512         eval level=\${${pvar}_level:=0}
513         eval ${pvar}_${level}="\$$pvar"
514         eval ${pvar}_level=$(($level+1))
515     done
516 }
517
518 popvar(){
519     for pvar in $*; do
520         eval level=\${${pvar}_level:-0}
521         test $level = 0 && continue
522         eval level=$(($level-1))
523         eval $pvar="\${${pvar}_${level}}"
524         eval ${pvar}_level=$level
525         eval unset ${pvar}_${level}
526     done
527 }
528
529 enable(){
530     set_all yes $*
531 }
532
533 disable(){
534     set_all no $*
535 }
536
537 enable_weak(){
538     set_weak yes $*
539 }
540
541 disable_weak(){
542     set_weak no $*
543 }
544
545 enable_safe(){
546     for var; do
547         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
548     done
549 }
550
551 disable_safe(){
552     for var; do
553         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
554     done
555 }
556
557 do_enable_deep(){
558     for var; do
559         enabled $var && continue
560         eval sel="\$${var}_select"
561         eval sgs="\$${var}_suggest"
562         pushvar var sgs
563         enable_deep $sel
564         popvar sgs
565         enable_deep_weak $sgs
566         popvar var
567     done
568 }
569
570 enable_deep(){
571     do_enable_deep $*
572     enable $*
573 }
574
575 enable_deep_weak(){
576     for var; do
577         disabled $var && continue
578         pushvar var
579         do_enable_deep $var
580         popvar var
581         enable_weak $var
582     done
583 }
584
585 enabled(){
586     test "${1#!}" = "$1" && op== || op=!=
587     eval test "x\$${1#!}" $op "xyes"
588 }
589
590 disabled(){
591     test "${1#!}" = "$1" && op== || op=!=
592     eval test "x\$${1#!}" $op "xno"
593 }
594
595 enabled_all(){
596     for opt; do
597         enabled $opt || return 1
598     done
599 }
600
601 disabled_all(){
602     for opt; do
603         disabled $opt || return 1
604     done
605 }
606
607 enabled_any(){
608     for opt; do
609         enabled $opt && return 0
610     done
611 }
612
613 disabled_any(){
614     for opt; do
615         disabled $opt && return 0
616     done
617     return 1
618 }
619
620 set_default(){
621     for opt; do
622         eval : \${$opt:=\$${opt}_default}
623     done
624 }
625
626 is_in(){
627     value=$1
628     shift
629     for var in $*; do
630         [ $var = $value ] && return 0
631     done
632     return 1
633 }
634
635 do_check_deps(){
636     for cfg; do
637         cfg="${cfg#!}"
638         enabled ${cfg}_checking && die "Circular dependency for $cfg."
639         disabled ${cfg}_checking && continue
640         enable ${cfg}_checking
641         append allopts $cfg
642
643         eval dep_all="\$${cfg}_deps"
644         eval dep_any="\$${cfg}_deps_any"
645         eval dep_sel="\$${cfg}_select"
646         eval dep_sgs="\$${cfg}_suggest"
647         eval dep_ifa="\$${cfg}_if"
648         eval dep_ifn="\$${cfg}_if_any"
649
650         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
651         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
652         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
653
654         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
655         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
656         enabled_all  $dep_all || disable $cfg
657         enabled_any  $dep_any || disable $cfg
658         disabled_any $dep_sel && disable $cfg
659
660         if enabled $cfg; then
661             enable_deep $dep_sel
662             enable_deep_weak $dep_sgs
663         fi
664
665         disable ${cfg}_checking
666     done
667 }
668
669 check_deps(){
670     unset allopts
671
672     do_check_deps "$@"
673
674     for cfg in $allopts; do
675         enabled $cfg || continue
676         eval dep_extralibs="\$${cfg}_extralibs"
677         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
678     done
679 }
680
681 print_config(){
682     pfx=$1
683     files=$2
684     shift 2
685     map 'eval echo "$v \${$v:-no}"' "$@" |
686     awk "BEGIN { split(\"$files\", files) }
687         {
688             c = \"$pfx\" toupper(\$1);
689             v = \$2;
690             sub(/yes/, 1, v);
691             sub(/no/,  0, v);
692             for (f in files) {
693                 file = files[f];
694                 if (file ~ /\\.h\$/) {
695                     printf(\"#define %s %d\\n\", c, v) >>file;
696                 } else if (file ~ /\\.asm\$/) {
697                     printf(\"%%define %s %d\\n\", c, v) >>file;
698                 } else if (file ~ /\\.mak\$/) {
699                     n = -v ? \"\" : \"!\";
700                     printf(\"%s%s=yes\\n\", n, c) >>file;
701                 } else if (file ~ /\\.texi\$/) {
702                     pre = -v ? \"\" : \"@c \";
703                     yesno = \$2;
704                     c2 = tolower(c);
705                     gsub(/_/, \"-\", c2);
706                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
707                 }
708             }
709         }"
710 }
711
712 print_enabled(){
713     suf=$1
714     shift
715     for v; do
716         enabled $v && printf "%s\n" ${v%$suf};
717     done
718 }
719
720 append(){
721     var=$1
722     shift
723     eval "$var=\"\$$var $*\""
724 }
725
726 prepend(){
727     var=$1
728     shift
729     eval "$var=\"$* \$$var\""
730 }
731
732 unique(){
733     var=$1
734     uniq_list=""
735     for tok in $(eval echo \$$var); do
736         uniq_list="$(filter_out $tok $uniq_list) $tok"
737     done
738     eval "$var=\"${uniq_list}\""
739 }
740
741 add_cppflags(){
742     append CPPFLAGS "$@"
743 }
744
745 add_cflags(){
746     append CFLAGS $($cflags_filter "$@")
747 }
748
749 add_cxxflags(){
750     append CXXFLAGS $($cflags_filter "$@")
751 }
752
753 add_asflags(){
754     append ASFLAGS $($asflags_filter "$@")
755 }
756
757 add_ldflags(){
758     append LDFLAGS $($ldflags_filter "$@")
759 }
760
761 add_stripflags(){
762     append ASMSTRIPFLAGS "$@"
763 }
764
765 add_extralibs(){
766     prepend extralibs $($ldflags_filter "$@")
767 }
768
769 add_host_cppflags(){
770     append host_cppflags "$@"
771 }
772
773 add_host_cflags(){
774     append host_cflags $($host_cflags_filter "$@")
775 }
776
777 add_host_ldflags(){
778     append host_ldflags $($host_ldflags_filter "$@")
779 }
780
781 add_compat(){
782     append compat_objs $1
783     shift
784     map 'add_cppflags -D$v' "$@"
785 }
786
787 check_cmd(){
788     log "$@"
789     "$@" >> $logfile 2>&1
790 }
791
792 check_stat(){
793     log check_stat "$@"
794     stat "$1" >> $logfile 2>&1
795 }
796
797 cc_o(){
798     eval printf '%s\\n' $CC_O
799 }
800
801 cc_e(){
802     eval printf '%s\\n' $CC_E
803 }
804
805 check_cc(){
806     log check_cc "$@"
807     cat > $TMPC
808     log_file $TMPC
809     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
810 }
811
812 check_cxx(){
813     log check_cxx "$@"
814     cat > $TMPCPP
815     log_file $TMPCPP
816     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
817 }
818
819 check_oc(){
820     log check_oc "$@"
821     cat > $TMPM
822     log_file $TMPM
823     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
824 }
825
826 check_cpp(){
827     log check_cpp "$@"
828     cat > $TMPC
829     log_file $TMPC
830     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
831 }
832
833 as_o(){
834     eval printf '%s\\n' $AS_O
835 }
836
837 check_as(){
838     log check_as "$@"
839     cat > $TMPS
840     log_file $TMPS
841     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
842 }
843
844 check_inline_asm(){
845     log check_inline_asm "$@"
846     name="$1"
847     code="$2"
848     shift 2
849     disable $name
850     check_cc "$@" <<EOF && enable $name
851 void foo(void){ __asm__ volatile($code); }
852 EOF
853 }
854
855 check_insn(){
856     log check_insn "$@"
857     check_inline_asm ${1}_inline "\"$2\""
858     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
859 }
860
861 check_yasm(){
862     log check_yasm "$@"
863     echo "$1" > $TMPS
864     log_file $TMPS
865     shift 1
866     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
867 }
868
869 ld_o(){
870     eval printf '%s\\n' $LD_O
871 }
872
873 check_ld(){
874     log check_ld "$@"
875     type=$1
876     shift 1
877     flags=$(filter_out '-l*|*.so' $@)
878     libs=$(filter '-l*|*.so' $@)
879     check_$type $($cflags_filter $flags) || return
880     flags=$($ldflags_filter $flags)
881     libs=$($ldflags_filter $libs)
882     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
883 }
884
885 print_include(){
886     hdr=$1
887     test "${hdr%.h}" = "${hdr}" &&
888         echo "#include $hdr"    ||
889         echo "#include <$hdr>"
890 }
891
892 check_code(){
893     log check_code "$@"
894     check=$1
895     headers=$2
896     code=$3
897     shift 3
898     {
899         for hdr in $headers; do
900             print_include $hdr
901         done
902         echo "int main(void) { $code; return 0; }"
903     } | check_$check "$@"
904 }
905
906 check_cppflags(){
907     log check_cppflags "$@"
908     check_cc "$@" <<EOF && append CPPFLAGS "$@"
909 int x;
910 EOF
911 }
912
913 test_cflags(){
914     log test_cflags "$@"
915     set -- $($cflags_filter "$@")
916     check_cc "$@" <<EOF
917 int x;
918 EOF
919 }
920
921 check_cflags(){
922     log check_cflags "$@"
923     test_cflags "$@" && add_cflags "$@"
924 }
925
926 check_cxxflags(){
927     log check_cxxflags "$@"
928     set -- $($cflags_filter "$@")
929     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
930 int x;
931 EOF
932 }
933
934 test_ldflags(){
935     log test_ldflags "$@"
936     check_ld "cc" "$@" <<EOF
937 int main(void){ return 0; }
938 EOF
939 }
940
941 check_ldflags(){
942     log check_ldflags "$@"
943     test_ldflags "$@" && add_ldflags "$@"
944 }
945
946 test_stripflags(){
947     log test_stripflags "$@"
948     # call check_cc to get a fresh TMPO
949     check_cc <<EOF
950 int main(void) { return 0; }
951 EOF
952     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
953 }
954
955 check_stripflags(){
956     log check_stripflags "$@"
957     test_stripflags "$@" && add_stripflags "$@"
958 }
959
960 check_header(){
961     log check_header "$@"
962     header=$1
963     shift
964     disable_safe $header
965     check_cpp "$@" <<EOF && enable_safe $header
966 #include <$header>
967 int x;
968 EOF
969 }
970
971 check_header_oc(){
972     log check_header_oc "$@"
973     rm -f -- "$TMPO"
974     header=$1
975     shift
976     disable_safe $header
977     {
978        echo "#include <$header>"
979        echo "int main(void) { return 0; }"
980     } | check_oc && check_stat "$TMPO" && enable_safe $headers
981 }
982
983 check_func(){
984     log check_func "$@"
985     func=$1
986     shift
987     disable $func
988     check_ld "cc" "$@" <<EOF && enable $func
989 extern int $func();
990 int main(void){ $func(); }
991 EOF
992 }
993
994 check_mathfunc(){
995     log check_mathfunc "$@"
996     func=$1
997     narg=$2
998     shift 2
999     test $narg = 2 && args="f, g" || args="f"
1000     disable $func
1001     check_ld "cc" "$@" <<EOF && enable $func
1002 #include <math.h>
1003 float foo(float f, float g) { return $func($args); }
1004 int main(void){ return (int) foo; }
1005 EOF
1006 }
1007
1008 check_func_headers(){
1009     log check_func_headers "$@"
1010     headers=$1
1011     funcs=$2
1012     shift 2
1013     {
1014         for hdr in $headers; do
1015             print_include $hdr
1016         done
1017         for func in $funcs; do
1018             echo "long check_$func(void) { return (long) $func; }"
1019         done
1020         echo "int main(void) { return 0; }"
1021     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1022 }
1023
1024 check_class_headers_cpp(){
1025     log check_class_headers_cpp "$@"
1026     headers=$1
1027     classes=$2
1028     shift 2
1029     {
1030         for hdr in $headers; do
1031             echo "#include <$hdr>"
1032         done
1033         echo "int main(void) { "
1034         i=1
1035         for class in $classes; do
1036             echo "$class obj$i;"
1037             i=$(expr $i + 1)
1038         done
1039         echo "return 0; }"
1040     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1041 }
1042
1043 check_cpp_condition(){
1044     log check_cpp_condition "$@"
1045     header=$1
1046     condition=$2
1047     shift 2
1048     check_cpp "$@" <<EOF
1049 #include <$header>
1050 #if !($condition)
1051 #error "unsatisfied condition: $condition"
1052 #endif
1053 EOF
1054 }
1055
1056 check_lib(){
1057     log check_lib "$@"
1058     header="$1"
1059     func="$2"
1060     shift 2
1061     check_header $header && check_func $func "$@" && add_extralibs "$@"
1062 }
1063
1064 check_lib2(){
1065     log check_lib2 "$@"
1066     headers="$1"
1067     funcs="$2"
1068     shift 2
1069     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1070 }
1071
1072 check_lib_cpp(){
1073     log check_lib_cpp "$@"
1074     headers="$1"
1075     classes="$2"
1076     shift 2
1077     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1078 }
1079
1080 check_pkg_config(){
1081     log check_pkg_config "$@"
1082     pkgandversion="$1"
1083     pkg="${1%% *}"
1084     headers="$2"
1085     funcs="$3"
1086     shift 3
1087     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1088     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1089     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1090     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1091         set_safe ${pkg}_cflags $pkg_cflags   &&
1092         set_safe ${pkg}_libs   $pkg_libs
1093 }
1094
1095 check_exec(){
1096     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1097 }
1098
1099 check_exec_crash(){
1100     code=$(cat)
1101
1102     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1103     # are safe but may not be available everywhere.  Thus we use
1104     # raise(SIGTERM) instead.  The check is run in a subshell so we
1105     # can redirect the "Terminated" message from the shell.  SIGBUS
1106     # is not defined by standard C so it is used conditionally.
1107
1108     (check_exec "$@") >> $logfile 2>&1 <<EOF
1109 #include <signal.h>
1110 static void sighandler(int sig){
1111     raise(SIGTERM);
1112 }
1113 int foo(void){
1114     $code
1115 }
1116 int (*func_ptr)(void) = foo;
1117 int main(void){
1118     signal(SIGILL, sighandler);
1119     signal(SIGFPE, sighandler);
1120     signal(SIGSEGV, sighandler);
1121 #ifdef SIGBUS
1122     signal(SIGBUS, sighandler);
1123 #endif
1124     return func_ptr();
1125 }
1126 EOF
1127 }
1128
1129 check_type(){
1130     log check_type "$@"
1131     headers=$1
1132     type=$2
1133     shift 2
1134     disable_safe "$type"
1135     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1136 }
1137
1138 check_struct(){
1139     log check_struct "$@"
1140     headers=$1
1141     struct=$2
1142     member=$3
1143     shift 3
1144     disable_safe "${struct}_${member}"
1145     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1146         enable_safe "${struct}_${member}"
1147 }
1148
1149 check_builtin(){
1150     log check_builtin "$@"
1151     name=$1
1152     headers=$2
1153     builtin=$3
1154     shift 3
1155     disable "$name"
1156     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1157 }
1158
1159 check_compile_assert(){
1160     log check_compile_assert "$@"
1161     name=$1
1162     headers=$2
1163     condition=$3
1164     shift 3
1165     disable "$name"
1166     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1167 }
1168
1169 require(){
1170     name="$1"
1171     header="$2"
1172     func="$3"
1173     shift 3
1174     check_lib $header $func "$@" || die "ERROR: $name not found"
1175 }
1176
1177 require2(){
1178     name="$1"
1179     headers="$2"
1180     func="$3"
1181     shift 3
1182     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1183 }
1184
1185 require_cpp(){
1186     name="$1"
1187     headers="$2"
1188     classes="$3"
1189     shift 3
1190     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1191 }
1192
1193 require_pkg_config(){
1194     pkg="$1"
1195     check_pkg_config "$@" || die "ERROR: $pkg not found"
1196     add_cflags    $(get_safe ${pkg}_cflags)
1197     add_extralibs $(get_safe ${pkg}_libs)
1198 }
1199
1200 require_libfreetype(){
1201     log require_libfreetype "$@"
1202     pkg="freetype2"
1203     check_cmd $pkg_config --exists --print-errors $pkg \
1204       || die "ERROR: $pkg not found"
1205     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1206     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1207     {
1208         echo "#include <ft2build.h>"
1209         echo "#include FT_FREETYPE_H"
1210         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1211         echo "int main(void) { return 0; }"
1212     } | check_ld "cc" $pkg_cflags $pkg_libs \
1213       && set_safe ${pkg}_cflags $pkg_cflags \
1214       && set_safe ${pkg}_libs   $pkg_libs \
1215       || die "ERROR: $pkg not found"
1216     add_cflags    $(get_safe ${pkg}_cflags)
1217     add_extralibs $(get_safe ${pkg}_libs)
1218 }
1219
1220 hostcc_e(){
1221     eval printf '%s\\n' $HOSTCC_E
1222 }
1223
1224 hostcc_o(){
1225     eval printf '%s\\n' $HOSTCC_O
1226 }
1227
1228 check_host_cc(){
1229     log check_host_cc "$@"
1230     cat > $TMPC
1231     log_file $TMPC
1232     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1233 }
1234
1235 check_host_cpp(){
1236     log check_host_cpp "$@"
1237     cat > $TMPC
1238     log_file $TMPC
1239     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1240 }
1241
1242 check_host_cppflags(){
1243     log check_host_cppflags "$@"
1244     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1245 int x;
1246 EOF
1247 }
1248
1249 check_host_cflags(){
1250     log check_host_cflags "$@"
1251     set -- $($host_cflags_filter "$@")
1252     check_host_cc "$@" <<EOF && append host_cflags "$@"
1253 int x;
1254 EOF
1255 }
1256
1257 check_host_cpp_condition(){
1258     log check_host_cpp_condition "$@"
1259     header=$1
1260     condition=$2
1261     shift 2
1262     check_host_cpp "$@" <<EOF
1263 #include <$header>
1264 #if !($condition)
1265 #error "unsatisfied condition: $condition"
1266 #endif
1267 EOF
1268 }
1269
1270 apply(){
1271     file=$1
1272     shift
1273     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1274 }
1275
1276 cp_if_changed(){
1277     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1278     mkdir -p "$(dirname $2)"
1279     $cp_f "$1" "$2"
1280 }
1281
1282 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1283 # system-dependent things.
1284
1285 COMPONENT_LIST="
1286     bsfs
1287     decoders
1288     demuxers
1289     encoders
1290     filters
1291     hwaccels
1292     indevs
1293     muxers
1294     outdevs
1295     parsers
1296     protocols
1297 "
1298
1299 EXAMPLE_LIST="
1300     avio_reading_example
1301     decoding_encoding_example
1302     demuxing_decoding_example
1303     filter_audio_example
1304     filtering_audio_example
1305     filtering_video_example
1306     metadata_example
1307     muxing_example
1308     remuxing_example
1309     resampling_audio_example
1310     scaling_video_example
1311     transcode_aac_example
1312     transcoding_example
1313 "
1314
1315 EXTERNAL_LIBRARY_LIST="
1316     avisynth
1317     bzlib
1318     crystalhd
1319     decklink
1320     frei0r
1321     gnutls
1322     iconv
1323     ladspa
1324     libaacplus
1325     libass
1326     libbluray
1327     libbs2b
1328     libcaca
1329     libcdio
1330     libcelt
1331     libdc1394
1332     libfaac
1333     libfdk_aac
1334     libflite
1335     libfontconfig
1336     libfreetype
1337     libfribidi
1338     libgme
1339     libgsm
1340     libiec61883
1341     libilbc
1342     libmodplug
1343     libmp3lame
1344     libnut
1345     libopencore_amrnb
1346     libopencore_amrwb
1347     libopencv
1348     libopenjpeg
1349     libopus
1350     libpulse
1351     libquvi
1352     librtmp
1353     libschroedinger
1354     libshine
1355     libsmbclient
1356     libsoxr
1357     libspeex
1358     libssh
1359     libstagefright_h264
1360     libtheora
1361     libtwolame
1362     libutvideo
1363     libv4l2
1364     libvidstab
1365     libvo_aacenc
1366     libvo_amrwbenc
1367     libvorbis
1368     libvpx
1369     libwavpack
1370     libwebp
1371     libx264
1372     libx265
1373     libxavs
1374     libxvid
1375     libzmq
1376     libzvbi
1377     openal
1378     opencl
1379     opengl
1380     openssl
1381     x11grab
1382     xlib
1383     zlib
1384 "
1385
1386 DOCUMENT_LIST="
1387     doc
1388     htmlpages
1389     manpages
1390     podpages
1391     txtpages
1392 "
1393
1394 FEATURE_LIST="
1395     ftrapv
1396     gray
1397     hardcoded_tables
1398     runtime_cpudetect
1399     safe_bitstream_reader
1400     shared
1401     small
1402     sram
1403     static
1404     swscale_alpha
1405 "
1406
1407 HWACCEL_LIST="
1408     dxva2
1409     vaapi
1410     vda
1411     vdpau
1412     xvmc
1413 "
1414
1415 LIBRARY_LIST="
1416     avcodec
1417     avdevice
1418     avfilter
1419     avformat
1420     avresample
1421     avutil
1422     postproc
1423     swresample
1424     swscale
1425 "
1426
1427 LICENSE_LIST="
1428     gpl
1429     nonfree
1430     version3
1431 "
1432
1433 PROGRAM_LIST="
1434     ffplay
1435     ffprobe
1436     ffserver
1437     ffmpeg
1438 "
1439
1440 SUBSYSTEM_LIST="
1441     dct
1442     dwt
1443     error_resilience
1444     fast_unaligned
1445     fft
1446     lsp
1447     lzo
1448     mdct
1449     network
1450     rdft
1451 "
1452
1453 CONFIG_LIST="
1454     $COMPONENT_LIST
1455     $DOCUMENT_LIST
1456     $EXAMPLE_LIST
1457     $EXTERNAL_LIBRARY_LIST
1458     $FEATURE_LIST
1459     $HWACCEL_LIST
1460     $LICENSE_LIST
1461     $LIBRARY_LIST
1462     $PROGRAM_LIST
1463     $SUBSYSTEM_LIST
1464     fontconfig
1465     incompatible_libav_abi
1466     memalign_hack
1467     memory_poisoning
1468     neon_clobber_test
1469     pic
1470     pod2man
1471     raise_major
1472     thumb
1473     xmm_clobber_test
1474 "
1475
1476 THREADS_LIST="
1477     pthreads
1478     os2threads
1479     w32threads
1480 "
1481
1482 ATOMICS_LIST="
1483     atomics_gcc
1484     atomics_suncc
1485     atomics_win32
1486 "
1487
1488 ARCH_LIST="
1489     aarch64
1490     alpha
1491     arm
1492     avr32
1493     avr32_ap
1494     avr32_uc
1495     bfin
1496     ia64
1497     m68k
1498     mips
1499     mips64
1500     parisc
1501     ppc
1502     ppc64
1503     s390
1504     sh4
1505     sparc
1506     sparc64
1507     tilegx
1508     tilepro
1509     tomi
1510     x86
1511     x86_32
1512     x86_64
1513 "
1514
1515 ARCH_EXT_LIST_ARM="
1516     armv5te
1517     armv6
1518     armv6t2
1519     armv8
1520     neon
1521     vfp
1522     vfpv3
1523 "
1524
1525 ARCH_EXT_LIST_MIPS="
1526     mipsfpu
1527     mips32r2
1528     mipsdspr1
1529     mipsdspr2
1530 "
1531
1532 ARCH_EXT_LIST_X86_SIMD="
1533     amd3dnow
1534     amd3dnowext
1535     avx
1536     avx2
1537     fma3
1538     fma4
1539     mmx
1540     mmxext
1541     sse
1542     sse2
1543     sse3
1544     sse4
1545     sse42
1546     ssse3
1547     xop
1548 "
1549
1550 ARCH_EXT_LIST_PPC="
1551     altivec
1552     dcbzl
1553     ldbrx
1554     ppc4xx
1555     vsx
1556 "
1557
1558 ARCH_EXT_LIST_X86="
1559     $ARCH_EXT_LIST_X86_SIMD
1560     cpunop
1561     i686
1562 "
1563
1564 ARCH_EXT_LIST="
1565     $ARCH_EXT_LIST_ARM
1566     $ARCH_EXT_LIST_PPC
1567     $ARCH_EXT_LIST_X86
1568     $ARCH_EXT_LIST_MIPS
1569     loongson
1570 "
1571
1572 ARCH_FEATURES="
1573     aligned_stack
1574     fast_64bit
1575     fast_clz
1576     fast_cmov
1577     local_aligned_8
1578     local_aligned_16
1579     local_aligned_32
1580 "
1581
1582 BUILTIN_LIST="
1583     atomic_cas_ptr
1584     machine_rw_barrier
1585     MemoryBarrier
1586     mm_empty
1587     rdtsc
1588     sarestart
1589     sync_val_compare_and_swap
1590 "
1591 HAVE_LIST_CMDLINE="
1592     inline_asm
1593     symver
1594     yasm
1595 "
1596
1597 HAVE_LIST_PUB="
1598     bigendian
1599     fast_unaligned
1600     incompatible_libav_abi
1601 "
1602
1603 HEADERS_LIST="
1604     alsa_asoundlib_h
1605     altivec_h
1606     arpa_inet_h
1607     asm_types_h
1608     cdio_paranoia_h
1609     cdio_paranoia_paranoia_h
1610     CL_cl_h
1611     dev_bktr_ioctl_bt848_h
1612     dev_bktr_ioctl_meteor_h
1613     dev_ic_bt8xx_h
1614     dev_video_bktr_ioctl_bt848_h
1615     dev_video_meteor_ioctl_meteor_h
1616     direct_h
1617     dlfcn_h
1618     dxva_h
1619     ES2_gl_h
1620     gsm_h
1621     io_h
1622     mach_mach_time_h
1623     machine_ioctl_bt848_h
1624     machine_ioctl_meteor_h
1625     malloc_h
1626     openjpeg_1_5_openjpeg_h
1627     OpenGL_gl3_h
1628     poll_h
1629     sndio_h
1630     soundcard_h
1631     sys_mman_h
1632     sys_param_h
1633     sys_resource_h
1634     sys_select_h
1635     sys_soundcard_h
1636     sys_time_h
1637     sys_un_h
1638     sys_videoio_h
1639     termios_h
1640     unistd_h
1641     windows_h
1642     winsock2_h
1643 "
1644
1645 MATH_FUNCS="
1646     atanf
1647     atan2f
1648     cbrt
1649     cbrtf
1650     cosf
1651     exp2
1652     exp2f
1653     expf
1654     fminf
1655     isinf
1656     isnan
1657     ldexpf
1658     llrint
1659     llrintf
1660     log2
1661     log2f
1662     log10f
1663     lrint
1664     lrintf
1665     powf
1666     rint
1667     round
1668     roundf
1669     sinf
1670     trunc
1671     truncf
1672 "
1673
1674 SYSTEM_FUNCS="
1675     access
1676     aligned_malloc
1677     clock_gettime
1678     closesocket
1679     CommandLineToArgvW
1680     CoTaskMemFree
1681     CryptGenRandom
1682     dlopen
1683     fcntl
1684     flt_lim
1685     fork
1686     getaddrinfo
1687     gethrtime
1688     getopt
1689     GetProcessAffinityMask
1690     GetProcessMemoryInfo
1691     GetProcessTimes
1692     getrusage
1693     getservbyport
1694     GetSystemTimeAsFileTime
1695     gettimeofday
1696     glob
1697     glXGetProcAddress
1698     inet_aton
1699     isatty
1700     jack_port_get_latency_range
1701     kbhit
1702     localtime_r
1703     lzo1x_999_compress
1704     mach_absolute_time
1705     MapViewOfFile
1706     memalign
1707     mkstemp
1708     mmap
1709     mprotect
1710     nanosleep
1711     PeekNamedPipe
1712     posix_memalign
1713     pthread_cancel
1714     sched_getaffinity
1715     SetConsoleTextAttribute
1716     setmode
1717     setrlimit
1718     Sleep
1719     strerror_r
1720     sysconf
1721     sysctl
1722     usleep
1723     VirtualAlloc
1724     wglGetProcAddress
1725 "
1726
1727 TOOLCHAIN_FEATURES="
1728     as_dn_directive
1729     as_func
1730     asm_mod_q
1731     attribute_may_alias
1732     attribute_packed
1733     ebp_available
1734     ebx_available
1735     gnu_as
1736     gnu_windres
1737     ibm_asm
1738     inline_asm_labels
1739     inline_asm_nonlocal_labels
1740     inline_asm_direct_symbol_refs
1741     pragma_deprecated
1742     rsync_contimeout
1743     symver_asm_label
1744     symver_gnu_asm
1745     vfp_args
1746     xform_asm
1747     xmm_clobbers
1748 "
1749
1750 TYPES_LIST="
1751     socklen_t
1752     struct_addrinfo
1753     struct_group_source_req
1754     struct_ip_mreq_source
1755     struct_ipv6_mreq
1756     struct_pollfd
1757     struct_rusage_ru_maxrss
1758     struct_sctp_event_subscribe
1759     struct_sockaddr_in6
1760     struct_sockaddr_sa_len
1761     struct_sockaddr_storage
1762     struct_stat_st_mtim_tv_nsec
1763     struct_v4l2_frmivalenum_discrete
1764 "
1765
1766 HAVE_LIST="
1767     $ARCH_EXT_LIST
1768     $(add_suffix _external $ARCH_EXT_LIST)
1769     $(add_suffix _inline   $ARCH_EXT_LIST)
1770     $ARCH_FEATURES
1771     $ATOMICS_LIST
1772     $BUILTIN_LIST
1773     $HAVE_LIST_CMDLINE
1774     $HAVE_LIST_PUB
1775     $HEADERS_LIST
1776     $MATH_FUNCS
1777     $SYSTEM_FUNCS
1778     $THREADS_LIST
1779     $TOOLCHAIN_FEATURES
1780     $TYPES_LIST
1781     atomics_native
1782     dos_paths
1783     dxva2api_cobj
1784     dxva2_lib
1785     libc_msvcrt
1786     libdc1394_1
1787     libdc1394_2
1788     makeinfo
1789     perl
1790     pod2man
1791     sdl
1792     texi2html
1793     threads
1794     vdpau_x11
1795     xlib
1796 "
1797
1798 # options emitted with CONFIG_ prefix but not available on the command line
1799 CONFIG_EXTRA="
1800     aandcttables
1801     ac3dsp
1802     audio_frame_queue
1803     audiodsp
1804     blockdsp
1805     bswapdsp
1806     cabac
1807     dsputil
1808     dvprofile
1809     exif
1810     fdctdsp
1811     frame_thread_encoder
1812     gcrypt
1813     golomb
1814     gplv3
1815     h263dsp
1816     h264chroma
1817     h264dsp
1818     h264pred
1819     h264qpel
1820     hpeldsp
1821     huffman
1822     huffyuvdsp
1823     huffyuvencdsp
1824     idctdsp
1825     intrax8
1826     lgplv3
1827     llauddsp
1828     llviddsp
1829     lpc
1830     mpeg_er
1831     mpegaudio
1832     mpegaudiodsp
1833     mpegvideo
1834     mpegvideoenc
1835     nettle
1836     pixblockdsp
1837     qpeldsp
1838     rangecoder
1839     riffdec
1840     riffenc
1841     rtpdec
1842     rtpenc_chain
1843     sinewin
1844     tpeldsp
1845     videodsp
1846     vp3dsp
1847 "
1848
1849 CMDLINE_SELECT="
1850     $ARCH_EXT_LIST
1851     $CONFIG_LIST
1852     $HAVE_LIST_CMDLINE
1853     $THREADS_LIST
1854     asm
1855     cross_compile
1856     debug
1857     extra_warnings
1858     logging
1859     lto
1860     optimizations
1861     rpath
1862     stripping
1863 "
1864
1865 PATHS_LIST="
1866     bindir
1867     datadir
1868     docdir
1869     incdir
1870     libdir
1871     mandir
1872     prefix
1873     shlibdir
1874 "
1875
1876 CMDLINE_SET="
1877     $PATHS_LIST
1878     ar
1879     arch
1880     as
1881     assert_level
1882     build_suffix
1883     cc
1884     cpu
1885     cross_prefix
1886     cxx
1887     dep_cc
1888     doxygen
1889     extra_version
1890     gas
1891     host_cc
1892     host_cflags
1893     host_ld
1894     host_ldflags
1895     host_libs
1896     host_os
1897     install
1898     ld
1899     logfile
1900     malloc_prefix
1901     nm
1902     optflags
1903     pkg_config
1904     pkg_config_flags
1905     progs_suffix
1906     random_seed
1907     ranlib
1908     samples
1909     strip
1910     sws_max_filter_size
1911     sysinclude
1912     sysroot
1913     target_exec
1914     target_os
1915     target_path
1916     target_samples
1917     tempprefix
1918     toolchain
1919     valgrind
1920     yasmexe
1921 "
1922
1923 CMDLINE_APPEND="
1924     extra_cflags
1925     extra_cxxflags
1926     host_cppflags
1927 "
1928
1929 # code dependency declarations
1930
1931 # architecture extensions
1932
1933 armv5te_deps="arm"
1934 armv6_deps="arm"
1935 armv6t2_deps="arm"
1936 armv8_deps="aarch64"
1937 neon_deps_any="aarch64 arm"
1938 vfp_deps_any="aarch64 arm"
1939 vfpv3_deps="vfp"
1940
1941 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1942
1943 mipsfpu_deps="mips"
1944 mips32r2_deps="mips"
1945 mipsdspr1_deps="mips"
1946 mipsdspr2_deps="mips"
1947
1948 altivec_deps="ppc"
1949 ppc4xx_deps="ppc"
1950 vsx_deps="ppc"
1951
1952 cpunop_deps="i686"
1953 x86_64_select="i686"
1954 x86_64_suggest="fast_cmov"
1955
1956 amd3dnow_deps="mmx"
1957 amd3dnowext_deps="amd3dnow"
1958 i686_deps="x86"
1959 mmx_deps="x86"
1960 mmxext_deps="mmx"
1961 sse_deps="mmxext"
1962 sse2_deps="sse"
1963 sse3_deps="sse2"
1964 ssse3_deps="sse3"
1965 sse4_deps="ssse3"
1966 sse42_deps="sse4"
1967 avx_deps="sse42"
1968 xop_deps="avx"
1969 fma3_deps="avx"
1970 fma4_deps="avx"
1971 avx2_deps="avx"
1972
1973 mmx_external_deps="yasm"
1974 mmx_inline_deps="inline_asm"
1975 mmx_suggest="mmx_external mmx_inline"
1976
1977 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1978     eval dep=\$${ext}_deps
1979     eval ${ext}_external_deps='"${dep}_external"'
1980     eval ${ext}_inline_deps='"${dep}_inline"'
1981     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1982 done
1983
1984 aligned_stack_if_any="aarch64 ppc x86"
1985 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1986 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1987 fast_unaligned_if_any="aarch64 ppc x86"
1988
1989 need_memalign="altivec neon sse"
1990
1991 # system capabilities
1992
1993 symver_if_any="symver_asm_label symver_gnu_asm"
1994
1995 # threading support
1996 atomics_gcc_if="sync_val_compare_and_swap"
1997 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1998 atomics_win32_if="MemoryBarrier"
1999 atomics_native_if_any="$ATOMICS_LIST"
2000 w32threads_deps="atomics_native"
2001 threads_if_any="$THREADS_LIST"
2002
2003 # subsystems
2004 dct_select="rdft"
2005 dsputil_select="fdctdsp idctdsp pixblockdsp"
2006 error_resilience_select="dsputil"
2007 frame_thread_encoder_deps="encoders threads"
2008 intrax8_select="error_resilience"
2009 mdct_select="fft"
2010 rdft_select="fft"
2011 mpeg_er_select="error_resilience"
2012 mpegaudio_select="mpegaudiodsp"
2013 mpegaudiodsp_select="dct"
2014 mpegvideo_select="blockdsp dsputil h264chroma hpeldsp idctdsp videodsp"
2015 mpegvideoenc_select="dsputil mpegvideo pixblockdsp qpeldsp"
2016
2017 # decoders / encoders
2018 aac_decoder_select="mdct sinewin"
2019 aac_encoder_select="audio_frame_queue mdct sinewin"
2020 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2021 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2022 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2023 ac3_encoder_select="ac3dsp audiodsp dsputil mdct"
2024 ac3_fixed_encoder_select="ac3dsp audiodsp dsputil mdct"
2025 aic_decoder_select="golomb idctdsp"
2026 alac_encoder_select="lpc"
2027 als_decoder_select="bswapdsp"
2028 amrnb_decoder_select="lsp"
2029 amrwb_decoder_select="lsp"
2030 amv_decoder_select="sp5x_decoder exif"
2031 amv_encoder_select="aandcttables mpegvideoenc"
2032 ape_decoder_select="bswapdsp llauddsp"
2033 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2034 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2035 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2036 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2037 atrac1_decoder_select="mdct sinewin"
2038 atrac3_decoder_select="mdct"
2039 atrac3p_decoder_select="mdct sinewin"
2040 avrn_decoder_select="exif"
2041 bink_decoder_select="blockdsp hpeldsp"
2042 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
2043 binkaudio_rdft_decoder_select="mdct rdft sinewin"
2044 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2045 cllc_decoder_select="bswapdsp"
2046 comfortnoise_encoder_select="lpc"
2047 cook_decoder_select="audiodsp mdct sinewin"
2048 cscd_decoder_select="lzo"
2049 cscd_decoder_suggest="zlib"
2050 dca_decoder_select="mdct"
2051 dirac_decoder_select="dsputil dwt golomb videodsp mpegvideoenc"
2052 dnxhd_decoder_select="blockdsp idctdsp"
2053 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2054 dvvideo_decoder_select="dvprofile idctdsp"
2055 dvvideo_encoder_select="dsputil dvprofile fdctdsp pixblockdsp"
2056 dxa_decoder_select="zlib"
2057 eac3_decoder_select="ac3_decoder"
2058 eac3_encoder_select="ac3_encoder"
2059 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2060 eatgq_decoder_select="aandcttables"
2061 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2062 exr_decoder_select="zlib"
2063 ffv1_decoder_select="golomb rangecoder"
2064 ffv1_encoder_select="rangecoder"
2065 ffvhuff_decoder_select="huffyuv_decoder"
2066 ffvhuff_encoder_select="huffyuv_encoder"
2067 fic_decoder_select="golomb"
2068 flac_decoder_select="golomb"
2069 flac_encoder_select="bswapdsp golomb lpc"
2070 flashsv_decoder_select="zlib"
2071 flashsv_encoder_select="zlib"
2072 flashsv2_encoder_select="zlib"
2073 flashsv2_decoder_select="zlib"
2074 flv_decoder_select="h263_decoder"
2075 flv_encoder_select="h263_encoder"
2076 fourxm_decoder_select="blockdsp bswapdsp"
2077 fraps_decoder_select="bswapdsp huffman"
2078 g2m_decoder_select="blockdsp idctdsp zlib"
2079 g729_decoder_select="audiodsp"
2080 h261_decoder_select="mpeg_er mpegvideo"
2081 h261_encoder_select="aandcttables mpegvideoenc"
2082 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2083 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2084 h263i_decoder_select="h263_decoder"
2085 h263p_encoder_select="h263_encoder"
2086 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2087 h264_decoder_suggest="error_resilience"
2088 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2089 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2090 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2091 iac_decoder_select="imc_decoder"
2092 imc_decoder_select="bswapdsp fft mdct sinewin"
2093 indeo3_decoder_select="hpeldsp"
2094 interplay_video_decoder_select="hpeldsp"
2095 jpegls_decoder_select="golomb mjpeg_decoder"
2096 jpegls_encoder_select="golomb"
2097 jv_decoder_select="blockdsp"
2098 lagarith_decoder_select="huffyuvdsp"
2099 ljpeg_encoder_select="aandcttables idctdsp"
2100 loco_decoder_select="golomb"
2101 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2102 metasound_decoder_select="lsp mdct sinewin"
2103 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2104 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp"
2105 mjpeg_encoder_select="aandcttables mpegvideoenc"
2106 mjpegb_decoder_select="mjpeg_decoder"
2107 mlp_decoder_select="mlp_parser"
2108 motionpixels_decoder_select="bswapdsp"
2109 mp1_decoder_select="mpegaudio"
2110 mp1float_decoder_select="mpegaudio"
2111 mp2_decoder_select="mpegaudio"
2112 mp2float_decoder_select="mpegaudio"
2113 mp3_decoder_select="mpegaudio"
2114 mp3adu_decoder_select="mpegaudio"
2115 mp3adufloat_decoder_select="mpegaudio"
2116 mp3float_decoder_select="mpegaudio"
2117 mp3on4_decoder_select="mpegaudio"
2118 mp3on4float_decoder_select="mpegaudio"
2119 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2120 mpc8_decoder_select="mpegaudiodsp"
2121 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2122 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2123 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2124 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2125 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2126 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2127 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2128 mpeg4_encoder_select="h263_encoder"
2129 msmpeg4v1_decoder_select="h263_decoder"
2130 msmpeg4v2_decoder_select="h263_decoder"
2131 msmpeg4v2_encoder_select="h263_encoder"
2132 msmpeg4v3_decoder_select="h263_decoder"
2133 msmpeg4v3_encoder_select="h263_encoder"
2134 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2135 mxpeg_decoder_select="mjpeg_decoder"
2136 nellymoser_decoder_select="mdct sinewin"
2137 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2138 nuv_decoder_select="idctdsp lzo"
2139 on2avc_decoder_select="mdct"
2140 opus_decoder_deps="swresample"
2141 png_decoder_select="zlib"
2142 png_encoder_select="huffyuvencdsp zlib"
2143 prores_decoder_select="blockdsp idctdsp"
2144 prores_encoder_select="fdctdsp"
2145 qcelp_decoder_select="lsp"
2146 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2147 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2148 ra_144_decoder_select="audiodsp"
2149 ralf_decoder_select="golomb"
2150 rawvideo_decoder_select="dsputil bswapdsp"
2151 rtjpeg_decoder_select="dsputil"
2152 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2153 rv10_encoder_select="h263_encoder"
2154 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2155 rv20_encoder_select="h263_encoder"
2156 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2157 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2158 shorten_decoder_select="golomb"
2159 sipr_decoder_select="lsp"
2160 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder mpegvideoenc"
2161 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
2162 sonic_decoder_select="golomb rangecoder"
2163 sonic_encoder_select="golomb rangecoder"
2164 sonic_ls_encoder_select="golomb rangecoder"
2165 sp5x_decoder_select="mjpeg_decoder"
2166 svq1_decoder_select="hpeldsp"
2167 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
2168 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2169 svq3_decoder_suggest="zlib"
2170 tak_decoder_select="audiodsp"
2171 theora_decoder_select="vp3_decoder"
2172 thp_decoder_select="mjpeg_decoder"
2173 tiff_decoder_suggest="zlib"
2174 tiff_encoder_suggest="zlib"
2175 truehd_decoder_select="mlp_parser"
2176 truemotion2_decoder_select="bswapdsp"
2177 truespeech_decoder_select="bswapdsp"
2178 tscc_decoder_select="zlib"
2179 twinvq_decoder_select="mdct lsp sinewin"
2180 utvideo_decoder_select="bswapdsp"
2181 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2182 vble_decoder_select="huffyuvdsp"
2183 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp"
2184 vc1image_decoder_select="vc1_decoder"
2185 vorbis_decoder_select="mdct"
2186 vorbis_encoder_select="mdct"
2187 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2188 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2189 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2190 vp6a_decoder_select="vp6_decoder"
2191 vp6f_decoder_select="vp6_decoder"
2192 vp7_decoder_select="h264pred videodsp"
2193 vp8_decoder_select="h264pred videodsp"
2194 vp9_decoder_select="videodsp vp9_parser"
2195 webp_decoder_select="vp8_decoder"
2196 wmalossless_decoder_select="llauddsp"
2197 wmapro_decoder_select="mdct sinewin"
2198 wmav1_decoder_select="mdct sinewin"
2199 wmav1_encoder_select="mdct sinewin"
2200 wmav2_decoder_select="mdct sinewin"
2201 wmav2_encoder_select="mdct sinewin"
2202 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2203 wmv1_decoder_select="h263_decoder"
2204 wmv1_encoder_select="h263_encoder"
2205 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2206 wmv2_encoder_select="h263_encoder"
2207 wmv3_decoder_select="vc1_decoder"
2208 wmv3image_decoder_select="wmv3_decoder"
2209 zerocodec_decoder_select="zlib"
2210 zlib_decoder_select="zlib"
2211 zlib_encoder_select="zlib"
2212 zmbv_decoder_select="zlib"
2213 zmbv_encoder_select="zlib"
2214
2215 # hardware accelerators
2216 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2217 dxva2_deps="dxva2api_h"
2218 vaapi_deps="va_va_h"
2219 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2220 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2221 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2222 xvmc_deps="X11_extensions_XvMClib_h"
2223
2224 h263_vaapi_hwaccel_deps="vaapi"
2225 h263_vaapi_hwaccel_select="h263_decoder"
2226 h263_vdpau_hwaccel_deps="vdpau"
2227 h263_vdpau_hwaccel_select="h263_decoder"
2228 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2229 h264_dxva2_hwaccel_deps="dxva2"
2230 h264_dxva2_hwaccel_select="h264_decoder"
2231 h264_vaapi_hwaccel_deps="vaapi"
2232 h264_vaapi_hwaccel_select="h264_decoder"
2233 h264_vda_decoder_deps="vda"
2234 h264_vda_decoder_select="h264_decoder"
2235 h264_vda_hwaccel_deps="vda"
2236 h264_vda_hwaccel_select="h264_decoder"
2237 h264_vda_old_hwaccel_deps="vda"
2238 h264_vda_old_hwaccel_select="h264_decoder"
2239 h264_vdpau_decoder_deps="vdpau"
2240 h264_vdpau_decoder_select="h264_decoder"
2241 h264_vdpau_hwaccel_deps="vdpau"
2242 h264_vdpau_hwaccel_select="h264_decoder"
2243 mpeg_vdpau_decoder_deps="vdpau"
2244 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2245 mpeg_xvmc_hwaccel_deps="xvmc"
2246 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2247 mpeg1_vdpau_decoder_deps="vdpau"
2248 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2249 mpeg1_vdpau_hwaccel_deps="vdpau"
2250 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2251 mpeg1_xvmc_hwaccel_deps="xvmc"
2252 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2253 mpeg2_crystalhd_decoder_select="crystalhd"
2254 mpeg2_dxva2_hwaccel_deps="dxva2"
2255 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2256 mpeg2_vaapi_hwaccel_deps="vaapi"
2257 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2258 mpeg2_vdpau_hwaccel_deps="vdpau"
2259 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2260 mpeg2_xvmc_hwaccel_deps="xvmc"
2261 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2262 mpeg4_crystalhd_decoder_select="crystalhd"
2263 mpeg4_vaapi_hwaccel_deps="vaapi"
2264 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2265 mpeg4_vdpau_decoder_deps="vdpau"
2266 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2267 mpeg4_vdpau_hwaccel_deps="vdpau"
2268 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2269 msmpeg4_crystalhd_decoder_select="crystalhd"
2270 vc1_crystalhd_decoder_select="crystalhd"
2271 vc1_dxva2_hwaccel_deps="dxva2"
2272 vc1_dxva2_hwaccel_select="vc1_decoder"
2273 vc1_vaapi_hwaccel_deps="vaapi"
2274 vc1_vaapi_hwaccel_select="vc1_decoder"
2275 vc1_vdpau_decoder_deps="vdpau"
2276 vc1_vdpau_decoder_select="vc1_decoder"
2277 vc1_vdpau_hwaccel_deps="vdpau"
2278 vc1_vdpau_hwaccel_select="vc1_decoder"
2279 wmv3_crystalhd_decoder_select="crystalhd"
2280 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2281 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2282 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2283 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2284
2285 # parsers
2286 h264_parser_select="h264_decoder"
2287 hevc_parser_select="hevc_decoder"
2288 mpegvideo_parser_select="mpegvideo"
2289 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2290 vc1_parser_select="mpegvideo vc1_decoder"
2291
2292 # external libraries
2293 libaacplus_encoder_deps="libaacplus"
2294 libcelt_decoder_deps="libcelt"
2295 libfaac_encoder_deps="libfaac"
2296 libfaac_encoder_select="audio_frame_queue"
2297 libfdk_aac_decoder_deps="libfdk_aac"
2298 libfdk_aac_encoder_deps="libfdk_aac"
2299 libfdk_aac_encoder_select="audio_frame_queue"
2300 libgme_demuxer_deps="libgme"
2301 libgsm_decoder_deps="libgsm"
2302 libgsm_encoder_deps="libgsm"
2303 libgsm_ms_decoder_deps="libgsm"
2304 libgsm_ms_encoder_deps="libgsm"
2305 libilbc_decoder_deps="libilbc"
2306 libilbc_encoder_deps="libilbc"
2307 libmodplug_demuxer_deps="libmodplug"
2308 libmp3lame_encoder_deps="libmp3lame"
2309 libmp3lame_encoder_select="audio_frame_queue"
2310 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2311 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2312 libopencore_amrnb_encoder_select="audio_frame_queue"
2313 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2314 libopenjpeg_decoder_deps="libopenjpeg"
2315 libopenjpeg_encoder_deps="libopenjpeg"
2316 libopus_decoder_deps="libopus"
2317 libopus_encoder_deps="libopus"
2318 libopus_encoder_select="audio_frame_queue"
2319 libquvi_demuxer_deps="libquvi"
2320 libschroedinger_decoder_deps="libschroedinger"
2321 libschroedinger_encoder_deps="libschroedinger"
2322 libshine_encoder_deps="libshine"
2323 libshine_encoder_select="audio_frame_queue"
2324 libspeex_decoder_deps="libspeex"
2325 libspeex_encoder_deps="libspeex"
2326 libspeex_encoder_select="audio_frame_queue"
2327 libstagefright_h264_decoder_deps="libstagefright_h264"
2328 libtheora_encoder_deps="libtheora"
2329 libtwolame_encoder_deps="libtwolame"
2330 libvo_aacenc_encoder_deps="libvo_aacenc"
2331 libvo_aacenc_encoder_select="audio_frame_queue"
2332 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2333 libvorbis_decoder_deps="libvorbis"
2334 libvorbis_encoder_deps="libvorbis"
2335 libvorbis_encoder_select="audio_frame_queue"
2336 libvpx_vp8_decoder_deps="libvpx"
2337 libvpx_vp8_encoder_deps="libvpx"
2338 libvpx_vp9_decoder_deps="libvpx"
2339 libvpx_vp9_encoder_deps="libvpx"
2340 libwavpack_encoder_deps="libwavpack"
2341 libwebp_encoder_deps="libwebp"
2342 libx264_encoder_deps="libx264"
2343 libx264rgb_encoder_deps="libx264"
2344 libx265_encoder_deps="libx265"
2345 libxavs_encoder_deps="libxavs"
2346 libxvid_encoder_deps="libxvid"
2347 libutvideo_decoder_deps="libutvideo"
2348 libutvideo_encoder_deps="libutvideo"
2349 libzvbi_teletext_decoder_deps="libzvbi"
2350
2351 # demuxers / muxers
2352 ac3_demuxer_select="ac3_parser"
2353 asf_demuxer_select="riffdec"
2354 asf_muxer_select="riffenc"
2355 asf_stream_muxer_select="asf_muxer"
2356 avi_demuxer_select="riffdec exif"
2357 avi_muxer_select="riffenc"
2358 avisynth_demuxer_deps="avisynth"
2359 avisynth_demuxer_select="riffdec"
2360 caf_demuxer_select="riffdec"
2361 dirac_demuxer_select="dirac_parser"
2362 dts_demuxer_select="dca_parser"
2363 dtshd_demuxer_select="dca_parser"
2364 dv_demuxer_select="dvprofile"
2365 dv_muxer_select="dvprofile"
2366 dxa_demuxer_select="riffdec"
2367 eac3_demuxer_select="ac3_parser"
2368 f4v_muxer_select="mov_muxer"
2369 flac_demuxer_select="flac_parser"
2370 hds_muxer_select="flv_muxer"
2371 hls_muxer_select="mpegts_muxer"
2372 image2_alias_pix_demuxer_select="image2_demuxer"
2373 image2_brender_pix_demuxer_select="image2_demuxer"
2374 ipod_muxer_select="mov_muxer"
2375 ismv_muxer_select="mov_muxer"
2376 libnut_demuxer_deps="libnut"
2377 libnut_muxer_deps="libnut"
2378 matroska_audio_muxer_select="matroska_muxer"
2379 matroska_demuxer_select="riffdec"
2380 matroska_demuxer_suggest="bzlib lzo zlib"
2381 matroska_muxer_select="riffenc"
2382 mmf_muxer_select="riffenc"
2383 mov_demuxer_select="riffdec"
2384 mov_demuxer_suggest="zlib"
2385 mov_muxer_select="riffenc rtpenc_chain"
2386 mp3_demuxer_select="mpegaudio_parser"
2387 mp4_muxer_select="mov_muxer"
2388 mpegts_muxer_select="adts_muxer latm_muxer"
2389 mpegtsraw_demuxer_select="mpegts_demuxer"
2390 mxf_d10_muxer_select="mxf_muxer"
2391 nut_muxer_select="riffenc"
2392 nuv_demuxer_select="riffdec"
2393 ogg_demuxer_select="golomb"
2394 psp_muxer_select="mov_muxer"
2395 rtp_demuxer_select="sdp_demuxer"
2396 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2397 rtsp_demuxer_select="http_protocol rtpdec"
2398 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2399 sap_demuxer_select="sdp_demuxer"
2400 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2401 sdp_demuxer_select="rtpdec"
2402 smoothstreaming_muxer_select="ismv_muxer"
2403 spdif_muxer_select="aac_parser"
2404 tak_demuxer_select="tak_parser"
2405 tg2_muxer_select="mov_muxer"
2406 tgp_muxer_select="mov_muxer"
2407 vobsub_demuxer_select="mpegps_demuxer"
2408 w64_demuxer_select="wav_demuxer"
2409 w64_muxer_select="wav_muxer"
2410 wav_demuxer_select="riffdec"
2411 wav_muxer_select="riffenc"
2412 webm_muxer_select="riffenc"
2413 wtv_demuxer_select="riffdec"
2414 wtv_muxer_select="riffenc"
2415 xmv_demuxer_select="riffdec"
2416 xwma_demuxer_select="riffdec"
2417
2418 # indevs / outdevs
2419 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2420 alsa_outdev_deps="alsa_asoundlib_h"
2421 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2422 avfoundation_indev_select="avfoundation"
2423 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2424 caca_outdev_deps="libcaca"
2425 decklink_outdev_deps="decklink pthreads"
2426 decklink_outdev_extralibs="-lstdc++"
2427 dshow_indev_deps="IBaseFilter"
2428 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2429 dv1394_indev_deps="dv1394"
2430 dv1394_indev_select="dv_demuxer"
2431 fbdev_indev_deps="linux_fb_h"
2432 fbdev_outdev_deps="linux_fb_h"
2433 gdigrab_indev_deps="CreateDIBSection"
2434 gdigrab_indev_extralibs="-lgdi32"
2435 gdigrab_indev_select="bmp_decoder"
2436 iec61883_indev_deps="libiec61883"
2437 jack_indev_deps="jack_jack_h sem_timedwait"
2438 lavfi_indev_deps="avfilter"
2439 libcdio_indev_deps="libcdio"
2440 libdc1394_indev_deps="libdc1394"
2441 libv4l2_indev_deps="libv4l2"
2442 openal_indev_deps="openal"
2443 opengl_outdev_deps="opengl"
2444 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2445 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2446 pulse_indev_deps="libpulse"
2447 pulse_outdev_deps="libpulse"
2448 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2449 qtkit_indev_select="qtkit"
2450 sdl_outdev_deps="sdl"
2451 sndio_indev_deps="sndio_h"
2452 sndio_outdev_deps="sndio_h"
2453 v4l_indev_deps="linux_videodev_h"
2454 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2455 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2456 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2457 vfwcap_indev_extralibs="-lavicap32"
2458 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2459 xv_outdev_extralibs="-lXv -lX11 -lXext"
2460 x11grab_indev_deps="x11grab"
2461
2462 # protocols
2463 bluray_protocol_deps="libbluray"
2464 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2465 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2466 ffrtmpcrypt_protocol_select="tcp_protocol"
2467 ffrtmphttp_protocol_deps="!librtmp_protocol"
2468 ffrtmphttp_protocol_select="http_protocol"
2469 ftp_protocol_select="tcp_protocol"
2470 gopher_protocol_select="network"
2471 http_protocol_select="tcp_protocol"
2472 httpproxy_protocol_select="tcp_protocol"
2473 https_protocol_select="tls_protocol"
2474 librtmp_protocol_deps="librtmp"
2475 librtmpe_protocol_deps="librtmp"
2476 librtmps_protocol_deps="librtmp"
2477 librtmpt_protocol_deps="librtmp"
2478 librtmpte_protocol_deps="librtmp"
2479 libsmbclient_protocol_deps="libsmbclient gplv3"
2480 libssh_protocol_deps="libssh"
2481 mmsh_protocol_select="http_protocol"
2482 mmst_protocol_select="network"
2483 rtmp_protocol_deps="!librtmp_protocol"
2484 rtmp_protocol_select="tcp_protocol"
2485 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2486 rtmps_protocol_deps="!librtmp_protocol"
2487 rtmps_protocol_select="tls_protocol"
2488 rtmpt_protocol_select="ffrtmphttp_protocol"
2489 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2490 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2491 rtp_protocol_select="udp_protocol"
2492 sctp_protocol_deps="struct_sctp_event_subscribe"
2493 sctp_protocol_select="network"
2494 srtp_protocol_select="rtp_protocol"
2495 tcp_protocol_select="network"
2496 tls_protocol_deps_any="openssl gnutls"
2497 tls_protocol_select="tcp_protocol"
2498 udp_protocol_select="network"
2499 unix_protocol_deps="sys_un_h"
2500 unix_protocol_select="network"
2501
2502 # filters
2503 aconvert_filter_deps="swresample"
2504 amovie_filter_deps="avcodec avformat"
2505 aresample_filter_deps="swresample"
2506 ass_filter_deps="libass"
2507 asyncts_filter_deps="avresample"
2508 atempo_filter_deps="avcodec"
2509 atempo_filter_select="rdft"
2510 azmq_filter_deps="libzmq"
2511 blackframe_filter_deps="gpl"
2512 boxblur_filter_deps="gpl"
2513 bs2b_filter_deps="libbs2b"
2514 colormatrix_filter_deps="gpl"
2515 cropdetect_filter_deps="gpl"
2516 dctdnoiz_filter_deps="avcodec"
2517 dctdnoiz_filter_select="dct"
2518 delogo_filter_deps="gpl"
2519 deshake_filter_deps="avcodec"
2520 deshake_filter_select="dsputil"
2521 drawtext_filter_deps="libfreetype"
2522 ebur128_filter_deps="gpl"
2523 flite_filter_deps="libflite"
2524 frei0r_filter_deps="frei0r dlopen"
2525 frei0r_filter_extralibs='$ldl'
2526 frei0r_src_filter_deps="frei0r dlopen"
2527 frei0r_src_filter_extralibs='$ldl'
2528 geq_filter_deps="gpl"
2529 histeq_filter_deps="gpl"
2530 hqdn3d_filter_deps="gpl"
2531 interlace_filter_deps="gpl"
2532 kerndeint_filter_deps="gpl"
2533 ladspa_filter_deps="ladspa dlopen"
2534 ladspa_filter_extralibs='$ldl'
2535 mcdeint_filter_deps="avcodec gpl"
2536 movie_filter_deps="avcodec avformat"
2537 mp_filter_deps="gpl avcodec swscale inline_asm"
2538 mpdecimate_filter_deps="gpl avcodec"
2539 mpdecimate_filter_select="dsputil pixblockdsp"
2540 mptestsrc_filter_deps="gpl"
2541 negate_filter_deps="lut_filter"
2542 perspective_filter_deps="gpl"
2543 ocv_filter_deps="libopencv"
2544 owdenoise_filter_deps="gpl"
2545 pan_filter_deps="swresample"
2546 phase_filter_deps="gpl"
2547 pp_filter_deps="gpl postproc"
2548 pullup_filter_deps="gpl"
2549 removelogo_filter_deps="avcodec avformat swscale"
2550 resample_filter_deps="avresample"
2551 sab_filter_deps="gpl swscale"
2552 scale_filter_deps="swscale"
2553 smartblur_filter_deps="gpl swscale"
2554 showspectrum_filter_deps="avcodec"
2555 showspectrum_filter_select="rdft"
2556 spp_filter_deps="gpl avcodec"
2557 spp_filter_select="dsputil fft idctdsp fdctdsp pixblockdsp"
2558 stereo3d_filter_deps="gpl"
2559 subtitles_filter_deps="avformat avcodec libass"
2560 super2xsai_filter_deps="gpl"
2561 tinterlace_filter_deps="gpl"
2562 vidstabdetect_filter_deps="libvidstab"
2563 vidstabtransform_filter_deps="libvidstab"
2564 pixfmts_super2xsai_test_deps="super2xsai_filter"
2565 tinterlace_merge_test_deps="tinterlace_filter"
2566 tinterlace_pad_test_deps="tinterlace_filter"
2567 zmq_filter_deps="libzmq"
2568 zoompan_filter_deps="swscale"
2569
2570 # examples
2571 avio_reading="avformat avcodec avutil"
2572 avcodec_example_deps="avcodec avutil"
2573 demuxing_decoding_example_deps="avcodec avformat avutil"
2574 filter_audio_example_deps="avfilter avutil"
2575 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2576 filtering_video_example_deps="avfilter avcodec avformat avutil"
2577 metadata_example_deps="avformat avutil"
2578 muxing_example_deps="avcodec avformat avutil swscale"
2579 remuxing_example_deps="avcodec avformat avutil"
2580 resampling_audio_example_deps="avutil swresample"
2581 scaling_video_example_deps="avutil swscale"
2582 transcode_aac_example_deps="avcodec avformat swresample"
2583 transcoding_example_deps="avfilter avcodec avformat avutil"
2584
2585 # libraries, in linking order
2586 avcodec_deps="avutil"
2587 avdevice_deps="avformat avcodec avutil"
2588 avfilter_deps="avutil"
2589 avformat_deps="avcodec avutil"
2590 avresample_deps="avutil"
2591 postproc_deps="avutil gpl"
2592 swresample_deps="avutil"
2593 swscale_deps="avutil"
2594
2595 # programs
2596 ffmpeg_deps="avcodec avfilter avformat swresample"
2597 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2598                null_filter
2599                setpts_filter trim_filter"
2600 ffplay_deps="avcodec avformat swscale swresample sdl"
2601 ffplay_libs='$sdl_libs'
2602 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2603 ffprobe_deps="avcodec avformat"
2604 ffserver_deps="avformat fork sarestart"
2605 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2606
2607 # documentation
2608 podpages_deps="perl"
2609 manpages_deps="perl pod2man"
2610 htmlpages_deps="perl texi2html"
2611 txtpages_deps="perl makeinfo"
2612 doc_deps_any="manpages htmlpages podpages txtpages"
2613
2614 # default parameters
2615
2616 logfile="config.log"
2617
2618 # installation paths
2619 prefix_default="/usr/local"
2620 bindir_default='${prefix}/bin'
2621 datadir_default='${prefix}/share/ffmpeg'
2622 docdir_default='${prefix}/share/doc/ffmpeg'
2623 incdir_default='${prefix}/include'
2624 libdir_default='${prefix}/lib'
2625 mandir_default='${prefix}/share/man'
2626 shlibdir_default="$libdir_default"
2627
2628 # toolchain
2629 ar_default="ar"
2630 cc_default="gcc"
2631 cxx_default="g++"
2632 host_cc_default="gcc"
2633 cp_f="cp -f"
2634 doxygen_default="doxygen"
2635 install="install"
2636 ln_s="ln -s -f"
2637 nm_default="nm -g"
2638 objformat="elf"
2639 pkg_config_default=pkg-config
2640 ranlib_default="ranlib"
2641 strip_default="strip"
2642 yasmexe_default="yasm"
2643 windres_default="windres"
2644
2645 nogas=":"
2646
2647 # OS
2648 target_os_default=$(tolower $(uname -s))
2649 host_os=$target_os_default
2650
2651 # machine
2652 if test "$target_os_default" = aix; then
2653     arch_default=$(uname -p)
2654     strip_default="strip -X32_64"
2655 else
2656     arch_default=$(uname -m)
2657 fi
2658 cpu="generic"
2659
2660 # configurable options
2661 enable $PROGRAM_LIST
2662 enable $DOCUMENT_LIST
2663 enable $EXAMPLE_LIST
2664 enable $(filter_out avresample $LIBRARY_LIST)
2665 enable stripping
2666
2667 enable asm
2668 enable debug
2669 enable doc
2670 enable optimizations
2671 enable runtime_cpudetect
2672 enable safe_bitstream_reader
2673 enable static
2674 enable swscale_alpha
2675
2676 sws_max_filter_size_default=256
2677 set_default sws_max_filter_size
2678
2679 # Enable hwaccels by default.
2680 enable dxva2 vaapi vda vdpau xvmc
2681 enable xlib
2682
2683 # build settings
2684 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2685 LIBPREF="lib"
2686 LIBSUF=".a"
2687 FULLNAME='$(NAME)$(BUILDSUF)'
2688 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2689 SLIBPREF="lib"
2690 SLIBSUF=".so"
2691 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2692 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2693 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2694 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2695 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2696 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2697
2698 asflags_filter=echo
2699 cflags_filter=echo
2700 ldflags_filter=echo
2701
2702 AS_C='-c'
2703 AS_O='-o $@'
2704 CC_C='-c'
2705 CC_E='-E -o $@'
2706 CC_O='-o $@'
2707 CXX_C='-c'
2708 CXX_O='-o $@'
2709 LD_O='-o $@'
2710 LD_LIB='-l%'
2711 LD_PATH='-L'
2712 HOSTCC_C='-c'
2713 HOSTCC_E='-E -o $@'
2714 HOSTCC_O='-o $@'
2715 HOSTLD_O='-o $@'
2716
2717 host_libs='-lm'
2718 host_cflags_filter=echo
2719 host_ldflags_filter=echo
2720
2721 target_path='$(CURDIR)'
2722
2723 # since the object filename is not given with the -MM flag, the compiler
2724 # is only able to print the basename, and we must add the path ourselves
2725 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2726 DEPFLAGS='-MM'
2727
2728 # find source path
2729 if test -f configure; then
2730     source_path=.
2731 else
2732     source_path=$(cd $(dirname "$0"); pwd)
2733     echo "$source_path" | grep -q '[[:blank:]]' &&
2734         die "Out of tree builds are impossible with whitespace in source path."
2735     test -e "$source_path/config.h" &&
2736         die "Out of tree builds are impossible with config.h in source dir."
2737 fi
2738
2739 for v in "$@"; do
2740     r=${v#*=}
2741     l=${v%"$r"}
2742     r=$(sh_quote "$r")
2743     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2744 done
2745
2746 find_things(){
2747     thing=$1
2748     pattern=$2
2749     file=$source_path/$3
2750     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2751 }
2752
2753 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2754 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2755 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2756 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2757 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2758 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2759 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2760 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2761 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2762 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2763 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2764
2765 ALL_COMPONENTS="
2766     $BSF_LIST
2767     $DECODER_LIST
2768     $DEMUXER_LIST
2769     $ENCODER_LIST
2770     $FILTER_LIST
2771     $HWACCEL_LIST
2772     $INDEV_LIST
2773     $MUXER_LIST
2774     $OUTDEV_LIST
2775     $PARSER_LIST
2776     $PROTOCOL_LIST
2777 "
2778
2779 for n in $COMPONENT_LIST; do
2780     v=$(toupper ${n%s})_LIST
2781     eval enable \$$v
2782     eval ${n}_if_any="\$$v"
2783 done
2784
2785 enable $ARCH_EXT_LIST
2786
2787 die_unknown(){
2788     echo "Unknown option \"$1\"."
2789     echo "See $0 --help for available options."
2790     exit 1
2791 }
2792
2793 print_3_columns() {
2794     cat | tr ' ' '\n' | sort | pr -r -3 -t
2795 }
2796
2797 show_list() {
2798     suffix=_$1
2799     shift
2800     echo $* | sed s/$suffix//g | print_3_columns
2801     exit 0
2802 }
2803
2804 rand_list(){
2805     IFS=', '
2806     set -- $*
2807     unset IFS
2808     for thing; do
2809         comp=${thing%:*}
2810         prob=${thing#$comp}
2811         prob=${prob#:}
2812         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2813         echo "prob ${prob:-0.5}"
2814         printf '%s\n' $comp
2815     done
2816 }
2817
2818 do_random(){
2819     action=$1
2820     shift
2821     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2822     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2823 }
2824
2825 for opt do
2826     optval="${opt#*=}"
2827     case "$opt" in
2828         --extra-ldflags=*)
2829             add_ldflags $optval
2830         ;;
2831         --extra-libs=*)
2832             add_extralibs $optval
2833         ;;
2834         --disable-devices)
2835             disable $INDEV_LIST $OUTDEV_LIST
2836         ;;
2837         --enable-debug=*)
2838             debuglevel="$optval"
2839         ;;
2840         --disable-programs)
2841             disable $PROGRAM_LIST
2842         ;;
2843         --disable-everything)
2844             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2845         ;;
2846         --disable-all)
2847             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2848             disable $LIBRARY_LIST $PROGRAM_LIST doc
2849         ;;
2850         --enable-random|--disable-random)
2851             action=${opt%%-random}
2852             do_random ${action#--} $COMPONENT_LIST
2853         ;;
2854         --enable-random=*|--disable-random=*)
2855             action=${opt%%-random=*}
2856             do_random ${action#--} $optval
2857         ;;
2858         --enable-*=*|--disable-*=*)
2859             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2860             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2861             eval list=\$$(toupper $thing)_LIST
2862             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2863             list=$(filter "$name" $list)
2864             [ "$list" = "" ] && warn "Option $opt did not match anything"
2865             $action $list
2866         ;;
2867         --enable-?*|--disable-?*)
2868             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2869             if is_in $option $COMPONENT_LIST; then
2870                 test $action = disable && action=unset
2871                 eval $action \$$(toupper ${option%s})_LIST
2872             elif is_in $option $CMDLINE_SELECT; then
2873                 $action $option
2874             else
2875                 die_unknown $opt
2876             fi
2877         ;;
2878         --list-*)
2879             NAME="${opt#--list-}"
2880             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2881             NAME=${NAME%s}
2882             eval show_list $NAME \$$(toupper $NAME)_LIST
2883         ;;
2884         --help|-h) show_help
2885         ;;
2886         --fatal-warnings) enable fatal_warnings
2887         ;;
2888         *)
2889             optname="${opt%%=*}"
2890             optname="${optname#--}"
2891             optname=$(echo "$optname" | sed 's/-/_/g')
2892             if is_in $optname $CMDLINE_SET; then
2893                 eval $optname='$optval'
2894             elif is_in $optname $CMDLINE_APPEND; then
2895                 append $optname "$optval"
2896             else
2897                 die_unknown $opt
2898             fi
2899         ;;
2900     esac
2901 done
2902
2903 disabled logging && logfile=/dev/null
2904
2905 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2906 set >> $logfile
2907
2908 test -n "$cross_prefix" && enable cross_compile
2909
2910 if enabled cross_compile; then
2911     test -n "$arch" && test -n "$target_os" ||
2912         die "Must specify target arch and OS when cross-compiling"
2913 fi
2914
2915 ar_default="${cross_prefix}${ar_default}"
2916 cc_default="${cross_prefix}${cc_default}"
2917 cxx_default="${cross_prefix}${cxx_default}"
2918 nm_default="${cross_prefix}${nm_default}"
2919 pkg_config_default="${cross_prefix}${pkg_config_default}"
2920 ranlib_default="${cross_prefix}${ranlib_default}"
2921 strip_default="${cross_prefix}${strip_default}"
2922 windres_default="${cross_prefix}${windres_default}"
2923
2924 sysinclude_default="${sysroot}/usr/include"
2925
2926 test -n "$valgrind" && toolchain="valgrind-memcheck"
2927
2928 case "$toolchain" in
2929     clang-asan)
2930         cc_default="clang"
2931         add_cflags  -fsanitize=address
2932         add_ldflags -fsanitize=address
2933     ;;
2934     clang-tsan)
2935         cc_default="clang"
2936         add_cflags  -fsanitize=thread -pie
2937         add_ldflags -fsanitize=thread -pie
2938     ;;
2939     clang-usan)
2940         cc_default="clang"
2941         add_cflags  -fsanitize=undefined
2942         add_ldflags -fsanitize=undefined
2943     ;;
2944     gcc-asan)
2945         cc_default="gcc"
2946         add_cflags  -fsanitize=address
2947         add_ldflags -fsanitize=address
2948     ;;
2949     gcc-tsan)
2950         cc_default="gcc"
2951         add_cflags  -fsanitize=thread -pie -fPIC
2952         add_ldflags -fsanitize=thread -pie -fPIC
2953     ;;
2954     gcc-usan)
2955         cc_default="gcc"
2956         add_cflags  -fsanitize=undefined
2957         add_ldflags -fsanitize=undefined
2958     ;;
2959     valgrind-massif)
2960         target_exec_default=${valgrind:-"valgrind"}
2961         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"
2962     ;;
2963     valgrind-memcheck)
2964         target_exec_default=${valgrind:-"valgrind"}
2965         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2966     ;;
2967     msvc)
2968         # Check whether the current MSVC version needs the C99 converter.
2969         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2970         # support enough of C99 to build ffmpeg. Default to the new
2971         # behaviour if the regexp was unable to match anything, since this
2972         # successfully parses the version number of existing supported
2973         # versions that require the converter (MSVC 2010 and 2012).
2974         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2975         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2976             cc_default="cl"
2977         else
2978             cc_default="c99wrap cl"
2979         fi
2980         ld_default="link"
2981         nm_default="dumpbin -symbols"
2982         ar_default="lib"
2983         target_os_default="win32"
2984         # Use a relative path for TMPDIR. This makes sure all the
2985         # ffconf temp files are written with a relative path, avoiding
2986         # issues with msys/win32 path conversion for MSVC parameters
2987         # such as -Fo<file> or -out:<file>.
2988         TMPDIR=.
2989     ;;
2990     icl)
2991         cc_default="icl"
2992         ld_default="xilink"
2993         nm_default="dumpbin -symbols"
2994         ar_default="xilib"
2995         target_os_default="win32"
2996         TMPDIR=.
2997     ;;
2998     gcov)
2999         add_cflags  -fprofile-arcs -ftest-coverage
3000         add_ldflags -fprofile-arcs -ftest-coverage
3001     ;;
3002     hardened)
3003         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
3004         add_ldflags -Wl,-z,relro -Wl,-z,now
3005     ;;
3006     ?*)
3007         die "Unknown toolchain $toolchain"
3008     ;;
3009 esac
3010
3011 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3012     target_exec target_os yasmexe
3013 enabled cross_compile || host_cc_default=$cc
3014 set_default host_cc
3015
3016 if ! $pkg_config --version >/dev/null 2>&1; then
3017     warn "$pkg_config not found, library detection may fail."
3018     pkg_config=false
3019 fi
3020
3021 if test $doxygen != $doxygen_default && \
3022   ! $doxygen --version >/dev/null 2>&1; then
3023     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3024 fi
3025
3026 exesuf() {
3027     case $1 in
3028         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3029     esac
3030 }
3031
3032 EXESUF=$(exesuf $target_os)
3033 HOSTEXESUF=$(exesuf $host_os)
3034
3035 # set temporary file name
3036 : ${TMPDIR:=$TEMPDIR}
3037 : ${TMPDIR:=$TMP}
3038 : ${TMPDIR:=/tmp}
3039
3040 if [ -n "$tempprefix" ] ; then
3041     mktemp(){
3042         echo $tempprefix.${HOSTNAME}.${UID}
3043     }
3044 elif ! check_cmd mktemp -u XXXXXX; then
3045     # simple replacement for missing mktemp
3046     # NOT SAFE FOR GENERAL USE
3047     mktemp(){
3048         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3049     }
3050 fi
3051
3052 tmpfile(){
3053     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3054         (set -C; exec > $tmp) 2>/dev/null ||
3055         die "Unable to create temporary file in $TMPDIR."
3056     append TMPFILES $tmp
3057     eval $1=$tmp
3058 }
3059
3060 trap 'rm -f -- $TMPFILES' EXIT
3061
3062 tmpfile TMPASM .asm
3063 tmpfile TMPC   .c
3064 tmpfile TMPCPP .cpp
3065 tmpfile TMPE   $EXESUF
3066 tmpfile TMPH   .h
3067 tmpfile TMPM   .m
3068 tmpfile TMPO   .o
3069 tmpfile TMPS   .S
3070 tmpfile TMPSH  .sh
3071 tmpfile TMPV   .ver
3072
3073 unset -f mktemp
3074
3075 chmod +x $TMPE
3076
3077 # make sure we can execute files in $TMPDIR
3078 cat > $TMPSH 2>> $logfile <<EOF
3079 #! /bin/sh
3080 EOF
3081 chmod +x $TMPSH >> $logfile 2>&1
3082 if ! $TMPSH >> $logfile 2>&1; then
3083     cat <<EOF
3084 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3085 variable to another directory and make sure that it is not mounted noexec.
3086 EOF
3087     die "Sanity test failed."
3088 fi
3089
3090 ccc_flags(){
3091     for flag; do
3092         case $flag in
3093             -std=c99)           echo -c99                       ;;
3094             -mcpu=*)            echo -arch ${flag#*=}           ;;
3095             -mieee)             echo -ieee                      ;;
3096             -O*|-fast)          echo $flag                      ;;
3097             -fno-math-errno)    echo -assume nomath_errno       ;;
3098             -g)                 echo -g3                        ;;
3099             -Wall)              echo -msg_enable level2         ;;
3100             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3101             -Wl,*)              echo $flag                      ;;
3102             -f*|-W*)                                            ;;
3103             *)                  echo $flag                      ;;
3104         esac
3105    done
3106 }
3107
3108 cparser_flags(){
3109     for flag; do
3110         case $flag in
3111             -Wno-switch)             echo -Wno-switch-enum ;;
3112             -Wno-format-zero-length) ;;
3113             -Wdisabled-optimization) ;;
3114             -Wno-pointer-sign)       echo -Wno-other ;;
3115             *)                       echo $flag ;;
3116         esac
3117     done
3118 }
3119
3120 msvc_common_flags(){
3121     for flag; do
3122         case $flag in
3123             # In addition to specifying certain flags under the compiler
3124             # specific filters, they must be specified here as well or else the
3125             # generic catch all at the bottom will print the original flag.
3126             -Wall)                ;;
3127             -std=c99)             ;;
3128             # Common flags
3129             -fomit-frame-pointer) ;;
3130             -g)                   echo -Z7 ;;
3131             -fno-math-errno)      ;;
3132             -fno-common)          ;;
3133             -fno-signed-zeros)    ;;
3134             -fPIC)                ;;
3135             -mthumb)              ;;
3136             -march=*)             ;;
3137             -lz)                  echo zlib.lib ;;
3138             -lavifil32)           echo vfw32.lib ;;
3139             -lavicap32)           echo vfw32.lib user32.lib ;;
3140             -l*)                  echo ${flag#-l}.lib ;;
3141             *)                    echo $flag ;;
3142         esac
3143     done
3144 }
3145
3146 msvc_flags(){
3147     msvc_common_flags "$@"
3148     for flag; do
3149         case $flag in
3150             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3151                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3152                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3153                                        -wd4554 \
3154                                        -wd4273 ;;
3155         esac
3156     done
3157 }
3158
3159 icl_flags(){
3160     msvc_common_flags "$@"
3161     for flag; do
3162         case $flag in
3163             # Despite what Intel's documentation says -Wall, which is supported
3164             # on Windows, does enable remarks so disable them here.
3165             -Wall)                echo $flag -Qdiag-disable:remark ;;
3166             -std=c99)             echo -Qstd=c99 ;;
3167             -flto)                echo -ipo ;;
3168         esac
3169     done
3170 }
3171
3172 icc_flags(){
3173     for flag; do
3174         case $flag in
3175             -flto)                echo -ipo ;;
3176             *)                    echo $flag ;;
3177         esac
3178     done
3179 }
3180
3181 pgi_flags(){
3182     for flag; do
3183         case $flag in
3184             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3185             -fomit-frame-pointer) echo -Mnoframe ;;
3186             -g)                   echo -gopt ;;
3187             *)                    echo $flag ;;
3188         esac
3189     done
3190 }
3191
3192 suncc_flags(){
3193     for flag; do
3194         case $flag in
3195             -march=*|-mcpu=*)
3196                 case "${flag#*=}" in
3197                     native)                   echo -xtarget=native       ;;
3198                     v9|niagara)               echo -xarch=sparc          ;;
3199                     ultrasparc)               echo -xarch=sparcvis       ;;
3200                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3201                     i586|pentium)             echo -xchip=pentium        ;;
3202                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3203                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3204                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3205                     pentium4*)          echo -xtarget=pentium4           ;;
3206                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3207                     *-sse3)             echo -xarch=sse3                 ;;
3208                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3209                     bonnell)                   echo -xarch=ssse3         ;;
3210                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3211                     westmere)                  echo -xtarget=westmere    ;;
3212                     silvermont)                echo -xarch=sse4_2        ;;
3213                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3214                     core-avx*|ivybridge|haswell|broadwell)
3215                                                echo -xarch=avx           ;;
3216                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3217                     btver1)                    echo -xarch=amdsse4a      ;;
3218                     btver2|bdver*)             echo -xarch=avx           ;;
3219                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3220                     k8|opteron|athlon64|athlon-fx)
3221                                                echo -xarch=sse2a         ;;
3222                     athlon*)                   echo -xarch=pentium_proa  ;;
3223                 esac
3224                 ;;
3225             -std=c99)             echo -xc99              ;;
3226             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3227             -fPIC)                echo -KPIC -xcode=pic32 ;;
3228             -W*,*)                echo $flag              ;;
3229             -f*-*|-W*|-mimpure-text)                      ;;
3230             -shared)              echo -G                 ;;
3231             *)                    echo $flag              ;;
3232         esac
3233     done
3234 }
3235
3236 tms470_flags(){
3237     for flag; do
3238         case $flag in
3239             -march=*|-mcpu=*)
3240                 case "${flag#*=}" in
3241                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3242                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3243                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3244                     armv6*|arm11*)          echo -mv=6   ;;
3245                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3246                                             echo -mv=5e  ;;
3247                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3248                 esac
3249                 ;;
3250             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3251             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3252             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3253             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3254             -msoft-float)   echo --float_support=vfplib       ;;
3255             -O[0-3]|-mf=*)  echo $flag                        ;;
3256             -g)             echo -g -mn                       ;;
3257             -pds=*)         echo $flag                        ;;
3258             -D*|-I*)        echo $flag                        ;;
3259             --gcc|--abi=*)  echo $flag                        ;;
3260             -me)            echo $flag                        ;;
3261         esac
3262     done
3263 }
3264
3265 probe_cc(){
3266     pfx=$1
3267     _cc=$2
3268
3269     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3270     unset _ld_o _ldflags _ld_lib _ld_path
3271     unset _depflags _DEPCMD _DEPFLAGS
3272     _flags_filter=echo
3273
3274     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3275         true # no-op to avoid reading stdin in following checks
3276     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3277         _type=llvm_gcc
3278         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3279         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3280         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3281         _cflags_speed='-O3'
3282         _cflags_size='-Os'
3283     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3284         _type=gcc
3285         gcc_version=$($_cc --version | head -n1)
3286         gcc_basever=$($_cc -dumpversion)
3287         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3288         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3289         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3290         if ! $_cc -dumpversion | grep -q '^2\.'; then
3291             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3292         fi
3293         _cflags_speed='-O3'
3294         _cflags_size='-Os'
3295     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3296         _type=icc
3297         _ident=$($_cc --version | head -n1)
3298         _depflags='-MMD'
3299         _cflags_speed='-O3'
3300         _cflags_size='-Os'
3301         _cflags_noopt='-O1'
3302         _flags_filter=icc_flags
3303     elif $_cc -v 2>&1 | grep -q xlc; then
3304         _type=xlc
3305         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3306         _cflags_speed='-O5'
3307         _cflags_size='-O5 -qcompact'
3308     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3309         _type=ccc
3310         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3311         _DEPFLAGS='-M'
3312         _cflags_speed='-fast'
3313         _cflags_size='-O1'
3314         _flags_filter=ccc_flags
3315     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3316         test -d "$sysroot" || die "No valid sysroot specified."
3317         _type=armcc
3318         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
3319         armcc_conf="$PWD/armcc.conf"
3320         $_cc --arm_linux_configure                 \
3321              --arm_linux_config_file="$armcc_conf" \
3322              --configure_sysroot="$sysroot"        \
3323              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3324              die "Error creating armcc configuration file."
3325         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3326         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3327         as_default="${cross_prefix}gcc"
3328         _depflags='-MMD'
3329         _cflags_speed='-O3'
3330         _cflags_size='-Os'
3331     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3332         _type=tms470
3333         _ident=$($_cc -version | head -n1 | tr -s ' ')
3334         _flags='--gcc --abi=eabi -me'
3335         _cc_e='-ppl -fe=$@'
3336         _cc_o='-fe=$@'
3337         _depflags='-ppa -ppd=$(@:.o=.d)'
3338         _cflags_speed='-O3 -mf=5'
3339         _cflags_size='-O3 -mf=2'
3340         _flags_filter=tms470_flags
3341     elif $_cc -v 2>&1 | grep -q clang; then
3342         _type=clang
3343         _ident=$($_cc --version | head -n1)
3344         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3345         _cflags_speed='-O3'
3346         _cflags_size='-Os'
3347     elif $_cc -V 2>&1 | grep -q Sun; then
3348         _type=suncc
3349         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3350         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3351         _DEPFLAGS='-xM1 -xc99'
3352         _ldflags='-std=c99'
3353         _cflags_speed='-O5'
3354         _cflags_size='-O5 -xspace'
3355         _flags_filter=suncc_flags
3356     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3357         _type=pathscale
3358         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3359         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3360         _cflags_speed='-O2'
3361         _cflags_size='-Os'
3362         _flags_filter='filter_out -Wdisabled-optimization'
3363     elif $_cc -v 2>&1 | grep -q Open64; then
3364         _type=open64
3365         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3366         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3367         _cflags_speed='-O2'
3368         _cflags_size='-Os'
3369         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3370     elif $_cc -V 2>&1 | grep -q Portland; then
3371         _type=pgi
3372         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3373         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3374         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3375         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3376         _cflags_noopt="-O"
3377         _flags_filter=pgi_flags
3378     elif $_cc 2>&1 | grep -q Microsoft; then
3379         _type=msvc
3380         _ident=$($cc 2>&1 | head -n1)
3381         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3382         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3383         _cflags_speed="-O2"
3384         _cflags_size="-O1"
3385         if $_cc 2>&1 | grep -q Linker; then
3386             _ld_o='-out:$@'
3387         else
3388             _ld_o='-Fe$@'
3389         fi
3390         _cc_o='-Fo$@'
3391         _cc_e='-P -Fi$@'
3392         _flags_filter=msvc_flags
3393         _ld_lib='lib%.a'
3394         _ld_path='-libpath:'
3395         _flags='-nologo'
3396         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3397         if [ $pfx = hostcc ]; then
3398             append _cflags -Dsnprintf=_snprintf
3399         fi
3400         disable stripping
3401     elif $_cc 2>&1 | grep -q Intel; then
3402         _type=icl
3403         _ident=$($cc 2>&1 | head -n1)
3404         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3405         # Not only is O3 broken on 13.x+ but it is slower on all previous
3406         # versions (tested) as well.
3407         _cflags_speed="-O2"
3408         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3409         if $_cc 2>&1 | grep -q Linker; then
3410             _ld_o='-out:$@'
3411         else
3412             _ld_o='-Fe$@'
3413         fi
3414         _cc_o='-Fo$@'
3415         _cc_e='-P'
3416         _flags_filter=icl_flags
3417         _ld_lib='lib%.a'
3418         _ld_path='-libpath:'
3419         # -Qdiag-error to make icl error when seeing certain unknown arguments
3420         _flags='-nologo -Qdiag-error:4044,10157'
3421         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3422         # with MSVC which enables it by default.
3423         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3424         if [ $pfx = hostcc ]; then
3425             append _cflags -Dsnprintf=_snprintf
3426         fi
3427     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3428         _type=cparser
3429         _ident=$($_cc --version | head -n1)
3430         _depflags='-MMD'
3431         _cflags_speed='-O4'
3432         _cflags_size='-O2'
3433         _flags_filter=cparser_flags
3434     fi
3435
3436     eval ${pfx}_type=\$_type
3437     eval ${pfx}_ident=\$_ident
3438 }
3439
3440 set_ccvars(){
3441     eval ${1}_C=\${_cc_c-\${${1}_C}}
3442     eval ${1}_E=\${_cc_e-\${${1}_E}}
3443     eval ${1}_O=\${_cc_o-\${${1}_O}}
3444
3445     if [ -n "$_depflags" ]; then
3446         eval ${1}_DEPFLAGS=\$_depflags
3447     else
3448         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3449         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3450         eval DEP${1}FLAGS=\$_flags
3451     fi
3452 }
3453
3454 probe_cc cc "$cc"
3455 cflags_filter=$_flags_filter
3456 cflags_speed=$_cflags_speed
3457 cflags_size=$_cflags_size
3458 cflags_noopt=$_cflags_noopt
3459 add_cflags $_flags $_cflags
3460 cc_ldflags=$_ldflags
3461 set_ccvars CC
3462
3463 probe_cc hostcc "$host_cc"
3464 host_cflags_filter=$_flags_filter
3465 add_host_cflags  $_flags $_cflags
3466 set_ccvars HOSTCC
3467
3468 test -n "$cc_type" && enable $cc_type ||
3469     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3470
3471 : ${as_default:=$cc}
3472 : ${dep_cc_default:=$cc}
3473 : ${ld_default:=$cc}
3474 : ${host_ld_default:=$host_cc}
3475 set_default ar as dep_cc ld host_ld windres
3476
3477 probe_cc as "$as"
3478 asflags_filter=$_flags_filter
3479 add_asflags $_flags $_cflags
3480 set_ccvars AS
3481
3482 probe_cc ld "$ld"
3483 ldflags_filter=$_flags_filter
3484 add_ldflags $_flags $_ldflags
3485 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3486 LD_O=${_ld_o-$LD_O}
3487 LD_LIB=${_ld_lib-$LD_LIB}
3488 LD_PATH=${_ld_path-$LD_PATH}
3489
3490 probe_cc hostld "$host_ld"
3491 host_ldflags_filter=$_flags_filter
3492 add_host_ldflags $_flags $_ldflags
3493 HOSTLD_O=${_ld_o-$HOSTLD_O}
3494
3495 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3496     probe_cc depcc "$dep_cc"
3497     CCDEP=${_DEPCMD:-$DEPCMD}
3498     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3499     DEPCCFLAGS=$_flags
3500 fi
3501
3502 if $ar 2>&1 | grep -q Microsoft; then
3503     arflags="-nologo"
3504     ar_o='-out:$@'
3505 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3506     arflags="rq"
3507     ar_o='$@'
3508 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3509     arflags='-Xany -r -c'
3510     ar_o='$@'
3511 else
3512     arflags="rc"
3513     ar_o='$@'
3514 fi
3515
3516 add_cflags $extra_cflags
3517 add_cxxflags $extra_cxxflags
3518 add_asflags $extra_cflags
3519
3520 if test -n "$sysroot"; then
3521     case "$cc_type" in
3522         gcc|llvm_gcc|clang)
3523             add_cppflags --sysroot="$sysroot"
3524             add_ldflags --sysroot="$sysroot"
3525 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3526             add_cppflags -isysroot "$sysroot"
3527             add_ldflags -isysroot "$sysroot"
3528         ;;
3529         tms470)
3530             add_cppflags -I"$sysinclude"
3531             add_ldflags  --sysroot="$sysroot"
3532         ;;
3533     esac
3534 fi
3535
3536 if test "$cpu" = host; then
3537     enabled cross_compile &&
3538         die "--cpu=host makes no sense when cross-compiling."
3539
3540     case "$cc_type" in
3541         gcc|llvm_gcc)
3542             check_native(){
3543                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3544                 sed -n "/cc1.*$1=/{
3545                             s/.*$1=\\([^ ]*\\).*/\\1/
3546                             p
3547                             q
3548                         }" $TMPE
3549             }
3550             cpu=$(check_native -march || check_native -mcpu)
3551         ;;
3552     esac
3553
3554     test "${cpu:-host}" = host &&
3555         die "--cpu=host not supported with compiler $cc"
3556 fi
3557
3558 # Deal with common $arch aliases
3559 case "$arch" in
3560     aarch64|arm64)
3561         arch="aarch64"
3562     ;;
3563     arm*|iPad*|iPhone*)
3564         arch="arm"
3565     ;;
3566     mips*|IP*)
3567         arch="mips"
3568     ;;
3569     parisc*|hppa*)
3570         arch="parisc"
3571     ;;
3572     "Power Macintosh"|ppc*|powerpc*)
3573         arch="ppc"
3574     ;;
3575     s390|s390x)
3576         arch="s390"
3577     ;;
3578     sh4|sh)
3579         arch="sh4"
3580     ;;
3581     sun4u|sparc*)
3582         arch="sparc"
3583     ;;
3584     tilegx|tile-gx)
3585         arch="tilegx"
3586     ;;
3587     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3588         arch="x86"
3589     ;;
3590 esac
3591
3592 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3593 enable $arch
3594
3595 # Add processor-specific flags
3596 if enabled aarch64; then
3597
3598     case $cpu in
3599         armv*)
3600             cpuflags="-march=$cpu"
3601         ;;
3602         *)
3603             cpuflags="-mcpu=$cpu"
3604         ;;
3605     esac
3606
3607 elif enabled alpha; then
3608
3609     cpuflags="-mcpu=$cpu"
3610
3611 elif enabled arm; then
3612
3613     check_arm_arch() {
3614         check_cpp_condition stddef.h \
3615             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3616             $cpuflags
3617     }
3618
3619     probe_arm_arch() {
3620         if   check_arm_arch 4;        then echo armv4;
3621         elif check_arm_arch 4T;       then echo armv4t;
3622         elif check_arm_arch 5;        then echo armv5;
3623         elif check_arm_arch 5E;       then echo armv5e;
3624         elif check_arm_arch 5T;       then echo armv5t;
3625         elif check_arm_arch 5TE;      then echo armv5te;
3626         elif check_arm_arch 5TEJ;     then echo armv5te;
3627         elif check_arm_arch 6;        then echo armv6;
3628         elif check_arm_arch 6J;       then echo armv6j;
3629         elif check_arm_arch 6K;       then echo armv6k;
3630         elif check_arm_arch 6Z;       then echo armv6z;
3631         elif check_arm_arch 6ZK;      then echo armv6zk;
3632         elif check_arm_arch 6T2;      then echo armv6t2;
3633         elif check_arm_arch 7;        then echo armv7;
3634         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3635         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3636         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3637         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3638         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3639         fi
3640     }
3641
3642     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3643
3644     case $cpu in
3645         armv*)
3646             cpuflags="-march=$cpu"
3647             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3648         ;;
3649         *)
3650             cpuflags="-mcpu=$cpu"
3651             case $cpu in
3652                 cortex-a*)                               subarch=armv7a  ;;
3653                 cortex-r*)                               subarch=armv7r  ;;
3654                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3655                 arm11*)                                  subarch=armv6   ;;
3656                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3657                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3658                 *)                             subarch=$(probe_arm_arch) ;;
3659             esac
3660         ;;
3661     esac
3662
3663     case "$subarch" in
3664         armv5t*)    enable fast_clz                ;;
3665         armv[6-8]*)
3666             enable fast_clz
3667             disabled fast_unaligned || enable fast_unaligned
3668             ;;
3669     esac
3670
3671 elif enabled avr32; then
3672
3673     case $cpu in
3674         ap7[02]0[0-2])
3675             subarch="avr32_ap"
3676             cpuflags="-mpart=$cpu"
3677         ;;
3678         ap)
3679             subarch="avr32_ap"
3680             cpuflags="-march=$cpu"
3681         ;;
3682         uc3[ab]*)
3683             subarch="avr32_uc"
3684             cpuflags="-mcpu=$cpu"
3685         ;;
3686         uc)
3687             subarch="avr32_uc"
3688             cpuflags="-march=$cpu"
3689         ;;
3690     esac
3691
3692 elif enabled bfin; then
3693
3694     cpuflags="-mcpu=$cpu"
3695
3696 elif enabled mips; then
3697
3698     cpuflags="-march=$cpu"
3699
3700     case $cpu in
3701         24kc)
3702             disable mipsfpu
3703             disable mipsdspr1
3704             disable mipsdspr2
3705         ;;
3706         24kf*)
3707             disable mipsdspr1
3708             disable mipsdspr2
3709         ;;
3710         24kec|34kc|1004kc)
3711             disable mipsfpu
3712             disable mipsdspr2
3713         ;;
3714         24kef*|34kf*|1004kf*)
3715             disable mipsdspr2
3716         ;;
3717         74kc)
3718             disable mipsfpu
3719         ;;
3720     esac
3721
3722 elif enabled ppc; then
3723
3724     disable ldbrx
3725     disable vsx
3726
3727     case $(tolower $cpu) in
3728         601|ppc601|powerpc601)
3729             cpuflags="-mcpu=601"
3730             disable altivec
3731         ;;
3732         603*|ppc603*|powerpc603*)
3733             cpuflags="-mcpu=603"
3734             disable altivec
3735         ;;
3736         604*|ppc604*|powerpc604*)
3737             cpuflags="-mcpu=604"
3738             disable altivec
3739         ;;
3740         g3|75*|ppc75*|powerpc75*)
3741             cpuflags="-mcpu=750"
3742             disable altivec
3743         ;;
3744         g4|745*|ppc745*|powerpc745*)
3745             cpuflags="-mcpu=7450"
3746         ;;
3747         74*|ppc74*|powerpc74*)
3748             cpuflags="-mcpu=7400"
3749         ;;
3750         g5|970|ppc970|powerpc970)
3751             cpuflags="-mcpu=970"
3752         ;;
3753         power[3-8]*)
3754             cpuflags="-mcpu=$cpu"
3755         ;;
3756         cell)
3757             cpuflags="-mcpu=cell"
3758             enable ldbrx
3759         ;;
3760         e500mc)
3761             cpuflags="-mcpu=e500mc"
3762             disable altivec
3763         ;;
3764         e500v2)
3765             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3766             disable altivec
3767             disable dcbzl
3768         ;;
3769         e500)
3770             cpuflags="-mcpu=8540 -mhard-float"
3771             disable altivec
3772             disable dcbzl
3773         ;;
3774     esac
3775
3776 elif enabled sparc; then
3777
3778     case $cpu in
3779         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3780             cpuflags="-mcpu=$cpu"
3781         ;;
3782         ultrasparc*|niagara[234])
3783             cpuflags="-mcpu=$cpu"
3784         ;;
3785     esac
3786
3787 elif enabled x86; then
3788
3789     case $cpu in
3790         i[345]86|pentium)
3791             cpuflags="-march=$cpu"
3792             disable mmx
3793         ;;
3794         # targets that do NOT support nopl and conditional mov (cmov)
3795         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3796             cpuflags="-march=$cpu"
3797             disable i686
3798         ;;
3799         # targets that do support nopl and conditional mov (cmov)
3800         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3801         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3802             cpuflags="-march=$cpu"
3803             enable i686
3804             enable fast_cmov
3805         ;;
3806         # targets that do support conditional mov but on which it's slow
3807         pentium4|pentium4m|prescott|nocona)
3808             cpuflags="-march=$cpu"
3809             enable i686
3810             disable fast_cmov
3811         ;;
3812     esac
3813
3814 fi
3815
3816 if [ "$cpu" != generic ]; then
3817     add_cflags  $cpuflags
3818     add_asflags $cpuflags
3819 fi
3820
3821 # compiler sanity check
3822 check_exec <<EOF
3823 int main(void){ return 0; }
3824 EOF
3825 if test "$?" != 0; then
3826     echo "$cc is unable to create an executable file."
3827     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3828         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3829         echo "Only do this if you know what cross compiling means."
3830     fi
3831     die "C compiler test failed."
3832 fi
3833
3834 add_cppflags -D_ISOC99_SOURCE
3835 add_cxxflags -D__STDC_CONSTANT_MACROS
3836 check_cflags -std=c99
3837 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3838 #include <stdlib.h>
3839 EOF
3840 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3841 #include <stdlib.h>
3842 EOF
3843
3844 add_host_cppflags -D_ISOC99_SOURCE
3845 check_host_cflags -std=c99
3846 check_host_cflags -Wall
3847 check_host_cflags -O3
3848
3849 check_64bit(){
3850     arch32=$1
3851     arch64=$2
3852     expr=$3
3853     check_code cc "" "int test[2*($expr) - 1]" &&
3854         subarch=$arch64 || subarch=$arch32
3855 }
3856
3857 case "$arch" in
3858     aarch64|alpha|ia64)
3859         spic=$shared
3860     ;;
3861     mips)
3862         check_64bit mips mips64 '_MIPS_SIM > 1'
3863         spic=$shared
3864     ;;
3865     parisc)
3866         check_64bit parisc parisc64 'sizeof(void *) > 4'
3867         spic=$shared
3868     ;;
3869     ppc)
3870         check_64bit ppc ppc64 'sizeof(void *) > 4'
3871         spic=$shared
3872     ;;
3873     s390)
3874         check_64bit s390 s390x 'sizeof(void *) > 4'
3875         spic=$shared
3876     ;;
3877     sparc)
3878         check_64bit sparc sparc64 'sizeof(void *) > 4'
3879         spic=$shared
3880     ;;
3881     x86)
3882         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3883         if test "$subarch" = "x86_64"; then
3884             spic=$shared
3885         fi
3886     ;;
3887     ppc)
3888         check_cc <<EOF && subarch="ppc64"
3889         int test[(int)sizeof(char*) - 7];
3890 EOF
3891     ;;
3892 esac
3893
3894 enable $subarch
3895 enabled spic && enable_weak pic
3896
3897 # OS specific
3898 case $target_os in
3899     aix)
3900         SHFLAGS=-shared
3901         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3902         enabled shared && add_ldflags -Wl,-brtl
3903         ;;
3904     android)
3905         disable symver
3906         SLIB_INSTALL_NAME='$(SLIBNAME)'
3907         SLIB_INSTALL_LINKS=
3908         # soname not set on purpose
3909         SHFLAGS=-shared
3910         ;;
3911     haiku)
3912         prefix_default="/boot/common"
3913         network_extralibs="-lnetwork"
3914         host_libs=
3915         ;;
3916     sunos)
3917         SHFLAGS='-shared -Wl,-h,$$(@F)'
3918         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3919         network_extralibs="-lsocket -lnsl"
3920         # When using suncc to build, the Solaris linker will mark
3921         # an executable with each instruction set encountered by
3922         # the Solaris assembler.  As our libraries contain their own
3923         # guards for processor-specific code, instead suppress
3924         # generation of the HWCAPS ELF section on Solaris x86 only.
3925         enabled_all suncc x86 &&
3926             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3927             add_ldflags -Wl,-M,mapfile
3928         nm_default='nm -P -g'
3929         ;;
3930     netbsd)
3931         disable symver
3932         oss_indev_extralibs="-lossaudio"
3933         oss_outdev_extralibs="-lossaudio"
3934         enabled gcc || check_ldflags -Wl,-zmuldefs
3935         ;;
3936     openbsd|bitrig)
3937         disable symver
3938         SHFLAGS='-shared'
3939         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3940         SLIB_INSTALL_LINKS=
3941         oss_indev_extralibs="-lossaudio"
3942         oss_outdev_extralibs="-lossaudio"
3943         ;;
3944     dragonfly)
3945         disable symver
3946         ;;
3947     freebsd)
3948         ;;
3949     bsd/os)
3950         add_extralibs -lpoll -lgnugetopt
3951         strip="strip -d"
3952         ;;
3953     darwin)
3954         test "${as#*gas-preprocessor.pl}" != "$as" || gas="${gas:=gas-preprocessor.pl} ${as:=$cc}"
3955         enabled ppc && add_asflags -force_cpusubtype_ALL
3956         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3957         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3958         strip="${strip} -x"
3959         add_ldflags -Wl,-dynamic,-search_paths_first
3960         SLIBSUF=".dylib"
3961         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3962         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3963         objformat="macho"
3964         enabled x86_64 && objformat="macho64"
3965         enabled_any pic shared ||
3966             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3967         ;;
3968     mingw32*)
3969         if test $target_os = "mingw32ce"; then
3970             disable network
3971         else
3972             target_os=mingw32
3973         fi
3974         LIBTARGET=i386
3975         if enabled x86_64; then
3976             LIBTARGET="i386:x86-64"
3977         elif enabled arm; then
3978             LIBTARGET=arm-wince
3979         fi
3980         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3981         check_ldflags -Wl,--nxcompat
3982         check_ldflags -Wl,--dynamicbase
3983         shlibdir_default="$bindir_default"
3984         SLIBPREF=""
3985         SLIBSUF=".dll"
3986         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3987         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3988         dlltool="${cross_prefix}dlltool"
3989         if check_cmd lib.exe -list; then
3990             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3991             if enabled x86_64; then
3992                 LIBTARGET=x64
3993             fi
3994         elif check_cmd $dlltool --version; then
3995             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3996         fi
3997         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3998         SLIB_INSTALL_LINKS=
3999         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4000         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4001         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
4002         objformat="win32"
4003         ranlib=:
4004         enable dos_paths
4005         ;;
4006     win32|win64)
4007         disable symver
4008         if enabled shared; then
4009             # Link to the import library instead of the normal static library
4010             # for shared libs.
4011             LD_LIB='%.lib'
4012             # Cannot build both shared and static libs with MSVC or icl.
4013             disable static
4014         fi
4015         shlibdir_default="$bindir_default"
4016         SLIBPREF=""
4017         SLIBSUF=".dll"
4018         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4019         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4020         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4021         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4022         SLIB_INSTALL_LINKS=
4023         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4024         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4025         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4026         objformat="win32"
4027         ranlib=:
4028         enable dos_paths
4029         ;;
4030     cygwin*)
4031         target_os=cygwin
4032         shlibdir_default="$bindir_default"
4033         SLIBPREF="cyg"
4034         SLIBSUF=".dll"
4035         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4036         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4037         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4038         SLIB_INSTALL_LINKS=
4039         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4040         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4041         objformat="win32"
4042         enable dos_paths
4043         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4044         ;;
4045     *-dos|freedos|opendos)
4046         network_extralibs="-lsocket"
4047         objformat="coff"
4048         enable dos_paths
4049         add_cppflags -U__STRICT_ANSI__
4050         ;;
4051     linux)
4052         enable dv1394
4053         ;;
4054     irix*)
4055         target_os=irix
4056         ranlib="echo ignoring ranlib"
4057         ;;
4058     os/2*)
4059         strip="lxlite -CS"
4060         ln_s="cp -f"
4061         objformat="aout"
4062         add_cppflags -D_GNU_SOURCE