Move extralibs variables using ldl after ldl definition
[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                            use rpath when linking programs [USE WITH CARE]
93
94 Licensing options:
95   --enable-gpl             allow use of GPL code, the resulting libs
96                            and binaries will be under GPL [no]
97   --enable-version3        upgrade (L)GPL to version 3 [no]
98   --enable-nonfree         allow use of nonfree code, the resulting libs
99                            and binaries will be unredistributable [no]
100
101 Configuration options:
102   --disable-static         do not build static libraries [no]
103   --enable-shared          build shared libraries [no]
104   --enable-small           optimize for size instead of speed
105   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
106   --enable-gray            enable full grayscale support (slower color)
107   --disable-swscale-alpha  disable alpha channel support in swscale
108   --disable-all            disable building components, libraries and programs
109   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
110   --enable-raise-major     increase major version numbers in sonames [no]
111
112 Program options:
113   --disable-programs       do not build command line programs
114   --disable-ffmpeg         disable ffmpeg build
115   --disable-ffplay         disable ffplay build
116   --disable-ffprobe        disable ffprobe build
117   --disable-ffserver       disable ffserver build
118
119 Documentation options:
120   --disable-doc            do not build documentation
121   --disable-htmlpages      do not build HTML documentation pages
122   --disable-manpages       do not build man documentation pages
123   --disable-podpages       do not build POD documentation pages
124   --disable-txtpages       do not build text documentation pages
125
126 Component options:
127   --disable-avdevice       disable libavdevice build
128   --disable-avcodec        disable libavcodec build
129   --disable-avformat       disable libavformat build
130   --disable-avutil         disable libavutil build
131   --disable-swresample     disable libswresample build
132   --disable-swscale        disable libswscale build
133   --disable-postproc       disable libpostproc build
134   --disable-avfilter       disable libavfilter build
135   --enable-avresample      enable libavresample build [no]
136   --disable-pthreads       disable pthreads [auto]
137   --disable-w32threads     disable Win32 threads [auto]
138   --disable-os2threads     disable OS/2 threads [auto]
139   --disable-network        disable network support [no]
140   --disable-dct            disable DCT code
141   --disable-dwt            disable DWT code
142   --disable-error-resilience disable error resilience code
143   --disable-lsp            disable LSP code
144   --disable-lzo            disable LZO decoder code
145   --disable-mdct           disable MDCT code
146   --disable-rdft           disable RDFT code
147   --disable-fft            disable FFT code
148   --disable-faan           disable floating point AAN (I)DCT code
149   --disable-pixelutils     disable pixel utils in libavutil
150
151 Hardware accelerators:
152   --disable-dxva2          disable DXVA2 code [autodetect]
153   --disable-vaapi          disable VAAPI code [autodetect]
154   --disable-vda            disable VDA code [autodetect]
155   --disable-vdpau          disable VDPAU code [autodetect]
156
157 Individual component options:
158   --disable-everything     disable all components listed below
159   --disable-encoder=NAME   disable encoder NAME
160   --enable-encoder=NAME    enable encoder NAME
161   --disable-encoders       disable all encoders
162   --disable-decoder=NAME   disable decoder NAME
163   --enable-decoder=NAME    enable decoder NAME
164   --disable-decoders       disable all decoders
165   --disable-hwaccel=NAME   disable hwaccel NAME
166   --enable-hwaccel=NAME    enable hwaccel NAME
167   --disable-hwaccels       disable all hwaccels
168   --disable-muxer=NAME     disable muxer NAME
169   --enable-muxer=NAME      enable muxer NAME
170   --disable-muxers         disable all muxers
171   --disable-demuxer=NAME   disable demuxer NAME
172   --enable-demuxer=NAME    enable demuxer NAME
173   --disable-demuxers       disable all demuxers
174   --enable-parser=NAME     enable parser NAME
175   --disable-parser=NAME    disable parser NAME
176   --disable-parsers        disable all parsers
177   --enable-bsf=NAME        enable bitstream filter NAME
178   --disable-bsf=NAME       disable bitstream filter NAME
179   --disable-bsfs           disable all bitstream filters
180   --enable-protocol=NAME   enable protocol NAME
181   --disable-protocol=NAME  disable protocol NAME
182   --disable-protocols      disable all protocols
183   --enable-indev=NAME      enable input device NAME
184   --disable-indev=NAME     disable input device NAME
185   --disable-indevs         disable input devices
186   --enable-outdev=NAME     enable output device NAME
187   --disable-outdev=NAME    disable output device NAME
188   --disable-outdevs        disable output devices
189   --disable-devices        disable all devices
190   --enable-filter=NAME     enable filter NAME
191   --disable-filter=NAME    disable filter NAME
192   --disable-filters        disable all filters
193
194 External library support:
195   --enable-avisynth        enable reading of AviSynth script files [no]
196   --disable-bzlib          disable bzlib [autodetect]
197   --enable-fontconfig      enable fontconfig
198   --enable-frei0r          enable frei0r video filtering
199   --enable-gnutls          enable gnutls [no]
200   --disable-iconv          disable iconv [autodetect]
201   --enable-ladspa          enable LADSPA audio filtering
202   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
203   --enable-libass          enable libass subtitles rendering [no]
204   --enable-libbluray       enable BluRay reading using libbluray [no]
205   --enable-libbs2b         enable bs2b DSP library [no]
206   --enable-libcaca         enable textual display using libcaca
207   --enable-libcelt         enable CELT decoding via libcelt [no]
208   --enable-libcdio         enable audio CD grabbing with libcdio
209   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
210                            and libraw1394 [no]
211   --enable-libfaac         enable AAC encoding via libfaac [no]
212   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
213   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
214   --enable-libfreetype     enable libfreetype [no]
215   --enable-libfribidi      enable libfribidi [no]
216   --enable-libgme          enable Game Music Emu via libgme [no]
217   --enable-libgsm          enable GSM de/encoding via libgsm [no]
218   --enable-libiec61883     enable iec61883 via libiec61883 [no]
219   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
220   --enable-libmodplug      enable ModPlug via libmodplug [no]
221   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
222   --enable-libnut          enable NUT (de)muxing via libnut,
223                            native (de)muxer exists [no]
224   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
225   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
226   --enable-libopencv       enable video filtering via libopencv [no]
227   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
228   --enable-libopus         enable Opus de/encoding via libopus [no]
229   --enable-libpulse        enable Pulseaudio input via libpulse [no]
230   --enable-libquvi         enable quvi input via libquvi [no]
231   --enable-librtmp         enable RTMP[E] support via librtmp [no]
232   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
233   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
234   --enable-libsmbclient    enable Samba protocol via libsmbclient [no]
235   --enable-libsoxr         enable Include libsoxr resampling [no]
236   --enable-libspeex        enable Speex de/encoding via libspeex [no]
237   --enable-libssh          enable SFTP protocol via libssh [no]
238   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
239   --enable-libtheora       enable Theora encoding via libtheora [no]
240   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
241   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
242   --enable-libv4l2         enable libv4l2/v4l-utils [no]
243   --enable-libvidstab      enable video stabilization using vid.stab [no]
244   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
245   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
246   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
247                            native implementation exists [no]
248   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
249   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
250   --enable-libwebp         enable WebP encoding via libwebp [no]
251   --enable-libx264         enable H.264 encoding via x264 [no]
252   --enable-libx265         enable HEVC encoding via x265 [no]
253   --enable-libxavs         enable AVS encoding via xavs [no]
254   --enable-libxcb          enable X11 grabbing using XCB [auto]
255   --enable-libxcb-shm      enable X11 grabbing shm communication [auto]
256   --enable-libxcb-xfixes   enable X11 grabbing mouse rendering [auto]
257   --enable-libxcb-shape    enable X11 grabbing shape rendering [auto]
258   --enable-libxvid         enable Xvid encoding via xvidcore,
259                            native MPEG-4/Xvid encoder exists [no]
260   --enable-libzmq          enable message passing via libzmq [no]
261   --enable-libzvbi         enable teletext support via libzvbi [no]
262   --disable-lzma           disable lzma [autodetect]
263   --enable-decklink        enable Blackmagick DeckLink I/O support [no]
264   --enable-openal          enable OpenAL 1.1 capture support [no]
265   --enable-opencl          enable OpenCL code
266   --enable-opengl          enable OpenGL rendering [no]
267   --enable-openssl         enable openssl [no]
268   --disable-sdl            disable sdl [autodetect]
269   --enable-x11grab         enable X11 grabbing (legacy) [no]
270   --disable-xlib           disable xlib [autodetect]
271   --disable-zlib           disable zlib [autodetect]
272
273 Toolchain options:
274   --arch=ARCH              select architecture [$arch]
275   --cpu=CPU                select the minimum required CPU (affects
276                            instruction selection, may crash on older CPUs)
277   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
278   --progs-suffix=SUFFIX    program name suffix []
279   --enable-cross-compile   assume a cross-compiler is used
280   --sysroot=PATH           root of cross-build tree
281   --sysinclude=PATH        location of cross-build system headers
282   --target-os=OS           compiler targets OS [$target_os]
283   --target-exec=CMD        command to run executables on target
284   --target-path=DIR        path to view of build directory on target
285   --target-samples=DIR     path to samples directory on target
286   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
287   --toolchain=NAME         set tool defaults according to NAME
288   --nm=NM                  use nm tool NM [$nm_default]
289   --ar=AR                  use archive tool AR [$ar_default]
290   --as=AS                  use assembler AS [$as_default]
291   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
292   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
293   --cc=CC                  use C compiler CC [$cc_default]
294   --cxx=CXX                use C compiler CXX [$cxx_default]
295   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
296   --ld=LD                  use linker LD [$ld_default]
297   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
298   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
299   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
300   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
301   --host-cc=HOSTCC         use host C compiler HOSTCC
302   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
303   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
304   --host-ld=HOSTLD         use host linker HOSTLD
305   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
306   --host-libs=HLIBS        use libs HLIBS when linking for host
307   --host-os=OS             compiler host OS [$target_os]
308   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
309   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
310   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
311   --extra-ldexeflags=ELDFLAGS add ELDFLAGS to LDEXEFLAGS [$LDEXEFLAGS]
312   --extra-libs=ELIBS       add ELIBS [$ELIBS]
313   --extra-version=STRING   version string suffix []
314   --optflags=OPTFLAGS      override optimization-related compiler flags
315   --build-suffix=SUFFIX    library name suffix []
316   --enable-pic             build position-independent code
317   --enable-thumb           compile for Thumb instruction set
318   --enable-lto             use link-time optimization
319
320 Advanced options (experts only):
321   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
322   --disable-symver         disable symbol versioning
323   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
324   --disable-safe-bitstream-reader
325                            disable buffer boundary checking in bitreaders
326                            (faster, but may crash)
327   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
328   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
329
330 Optimization options (experts only):
331   --disable-asm            disable all assembly optimizations
332   --disable-altivec        disable AltiVec optimizations
333   --disable-amd3dnow       disable 3DNow! optimizations
334   --disable-amd3dnowext    disable 3DNow! extended optimizations
335   --disable-mmx            disable MMX optimizations
336   --disable-mmxext         disable MMXEXT optimizations
337   --disable-sse            disable SSE optimizations
338   --disable-sse2           disable SSE2 optimizations
339   --disable-sse3           disable SSE3 optimizations
340   --disable-ssse3          disable SSSE3 optimizations
341   --disable-sse4           disable SSE4 optimizations
342   --disable-sse42          disable SSE4.2 optimizations
343   --disable-avx            disable AVX optimizations
344   --disable-xop            disable XOP optimizations
345   --disable-fma3           disable FMA3 optimizations
346   --disable-fma4           disable FMA4 optimizations
347   --disable-avx2           disable AVX2 optimizations
348   --disable-armv5te        disable armv5te optimizations
349   --disable-armv6          disable armv6 optimizations
350   --disable-armv6t2        disable armv6t2 optimizations
351   --disable-vfp            disable VFP optimizations
352   --disable-neon           disable NEON optimizations
353   --disable-inline-asm     disable use of inline assembly
354   --disable-yasm           disable use of nasm/yasm assembly
355   --disable-mips32r2       disable MIPS32R2 optimizations
356   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
357   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
358   --disable-mipsfpu        disable floating point MIPS optimizations
359   --disable-fast-unaligned consider unaligned accesses slow
360
361 Developer options (useful when working on FFmpeg itself):
362   --disable-debug          disable debugging symbols
363   --enable-debug=LEVEL     set the debug level [$debuglevel]
364   --disable-optimizations  disable compiler optimizations
365   --enable-extra-warnings  enable more compiler warnings
366   --disable-stripping      disable stripping of executables and shared libraries
367   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
368                            2 causes a slowdown at runtime.
369   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
370   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
371                            leaks and errors, using the specified valgrind binary.
372                            Cannot be combined with --target-exec
373   --enable-ftrapv          Trap arithmetic overflows
374   --samples=PATH           location of test samples for FATE, if not set use
375                            \$FATE_SAMPLES at make invocation time.
376   --enable-neon-clobber-test check NEON registers for clobbering (should be
377                            used only for debugging purposes)
378   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
379                            should be used only for debugging purposes)
380   --enable-random          randomly enable/disable components
381   --disable-random
382   --enable-random=LIST     randomly enable/disable specific components or
383   --disable-random=LIST    component groups. LIST is a comma-separated list
384                            of NAME[:PROB] entries where NAME is a component
385                            (group) and PROB the probability associated with
386                            NAME (default 0.5).
387   --random-seed=VALUE      seed value for --enable/disable-random
388
389 NOTE: Object files are built at the place where configure is launched.
390 EOF
391   exit 0
392 }
393
394 quotes='""'
395
396 log(){
397     echo "$@" >> $logfile
398 }
399
400 log_file(){
401     log BEGIN $1
402     pr -n -t $1 >> $logfile
403     log END $1
404 }
405
406 echolog(){
407     log "$@"
408     echo "$@"
409 }
410
411 warn(){
412     log "WARNING: $*"
413     WARNINGS="${WARNINGS}WARNING: $*\n"
414 }
415
416 die(){
417     echolog "$@"
418     cat <<EOF
419
420 If you think configure made a mistake, make sure you are using the latest
421 version from Git.  If the latest version fails, report the problem to the
422 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
423 EOF
424     if disabled logging; then
425         cat <<EOF
426 Rerun configure with logging enabled (do not use --disable-logging), and
427 include the log this produces with your report.
428 EOF
429     else
430         cat <<EOF
431 Include the log file "$logfile" produced by configure as this will help
432 solve the problem.
433 EOF
434     fi
435     exit 1
436 }
437
438 # Avoid locale weirdness, besides we really just want to translate ASCII.
439 toupper(){
440     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
441 }
442
443 tolower(){
444     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
445 }
446
447 c_escape(){
448     echo "$*" | sed 's/["\\]/\\\0/g'
449 }
450
451 sh_quote(){
452     v=$(echo "$1" | sed "s/'/'\\\\''/g")
453     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
454     echo "$v"
455 }
456
457 cleanws(){
458     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
459 }
460
461 filter(){
462     pat=$1
463     shift
464     for v; do
465         eval "case $v in $pat) echo $v ;; esac"
466     done
467 }
468
469 filter_out(){
470     pat=$1
471     shift
472     for v; do
473         eval "case $v in $pat) ;; *) echo $v ;; esac"
474     done
475 }
476
477 map(){
478     m=$1
479     shift
480     for v; do eval $m; done
481 }
482
483 add_suffix(){
484     suffix=$1
485     shift
486     for v; do echo ${v}${suffix}; done
487 }
488
489 set_all(){
490     value=$1
491     shift
492     for var in $*; do
493         eval $var=$value
494     done
495 }
496
497 set_weak(){
498     value=$1
499     shift
500     for var; do
501         eval : \${$var:=$value}
502     done
503 }
504
505 sanitize_var_name(){
506     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
507 }
508
509 set_safe(){
510     var=$1
511     shift
512     eval $(sanitize_var_name "$var")='$*'
513 }
514
515 get_safe(){
516     eval echo \$$(sanitize_var_name "$1")
517 }
518
519 pushvar(){
520     for pvar in $*; do
521         eval level=\${${pvar}_level:=0}
522         eval ${pvar}_${level}="\$$pvar"
523         eval ${pvar}_level=$(($level+1))
524     done
525 }
526
527 popvar(){
528     for pvar in $*; do
529         eval level=\${${pvar}_level:-0}
530         test $level = 0 && continue
531         eval level=$(($level-1))
532         eval $pvar="\${${pvar}_${level}}"
533         eval ${pvar}_level=$level
534         eval unset ${pvar}_${level}
535     done
536 }
537
538 enable(){
539     set_all yes $*
540 }
541
542 disable(){
543     set_all no $*
544 }
545
546 enable_weak(){
547     set_weak yes $*
548 }
549
550 disable_weak(){
551     set_weak no $*
552 }
553
554 enable_safe(){
555     for var; do
556         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
557     done
558 }
559
560 disable_safe(){
561     for var; do
562         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
563     done
564 }
565
566 do_enable_deep(){
567     for var; do
568         enabled $var && continue
569         eval sel="\$${var}_select"
570         eval sgs="\$${var}_suggest"
571         pushvar var sgs
572         enable_deep $sel
573         popvar sgs
574         enable_deep_weak $sgs
575         popvar var
576     done
577 }
578
579 enable_deep(){
580     do_enable_deep $*
581     enable $*
582 }
583
584 enable_deep_weak(){
585     for var; do
586         disabled $var && continue
587         pushvar var
588         do_enable_deep $var
589         popvar var
590         enable_weak $var
591     done
592 }
593
594 enabled(){
595     test "${1#!}" = "$1" && op== || op=!=
596     eval test "x\$${1#!}" $op "xyes"
597 }
598
599 disabled(){
600     test "${1#!}" = "$1" && op== || op=!=
601     eval test "x\$${1#!}" $op "xno"
602 }
603
604 enabled_all(){
605     for opt; do
606         enabled $opt || return 1
607     done
608 }
609
610 disabled_all(){
611     for opt; do
612         disabled $opt || return 1
613     done
614 }
615
616 enabled_any(){
617     for opt; do
618         enabled $opt && return 0
619     done
620 }
621
622 disabled_any(){
623     for opt; do
624         disabled $opt && return 0
625     done
626     return 1
627 }
628
629 set_default(){
630     for opt; do
631         eval : \${$opt:=\$${opt}_default}
632     done
633 }
634
635 is_in(){
636     value=$1
637     shift
638     for var in $*; do
639         [ $var = $value ] && return 0
640     done
641     return 1
642 }
643
644 do_check_deps(){
645     for cfg; do
646         cfg="${cfg#!}"
647         enabled ${cfg}_checking && die "Circular dependency for $cfg."
648         disabled ${cfg}_checking && continue
649         enable ${cfg}_checking
650         append allopts $cfg
651
652         eval dep_all="\$${cfg}_deps"
653         eval dep_any="\$${cfg}_deps_any"
654         eval dep_sel="\$${cfg}_select"
655         eval dep_sgs="\$${cfg}_suggest"
656         eval dep_ifa="\$${cfg}_if"
657         eval dep_ifn="\$${cfg}_if_any"
658
659         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
660         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
661         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
662
663         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
664         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
665         enabled_all  $dep_all || disable $cfg
666         enabled_any  $dep_any || disable $cfg
667         disabled_any $dep_sel && disable $cfg
668
669         if enabled $cfg; then
670             enable_deep $dep_sel
671             enable_deep_weak $dep_sgs
672         fi
673
674         disable ${cfg}_checking
675     done
676 }
677
678 check_deps(){
679     unset allopts
680
681     do_check_deps "$@"
682
683     for cfg in $allopts; do
684         enabled $cfg || continue
685         eval dep_extralibs="\$${cfg}_extralibs"
686         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
687     done
688 }
689
690 print_config(){
691     pfx=$1
692     files=$2
693     shift 2
694     map 'eval echo "$v \${$v:-no}"' "$@" |
695     awk "BEGIN { split(\"$files\", files) }
696         {
697             c = \"$pfx\" toupper(\$1);
698             v = \$2;
699             sub(/yes/, 1, v);
700             sub(/no/,  0, v);
701             for (f in files) {
702                 file = files[f];
703                 if (file ~ /\\.h\$/) {
704                     printf(\"#define %s %d\\n\", c, v) >>file;
705                 } else if (file ~ /\\.asm\$/) {
706                     printf(\"%%define %s %d\\n\", c, v) >>file;
707                 } else if (file ~ /\\.mak\$/) {
708                     n = -v ? \"\" : \"!\";
709                     printf(\"%s%s=yes\\n\", n, c) >>file;
710                 } else if (file ~ /\\.texi\$/) {
711                     pre = -v ? \"\" : \"@c \";
712                     yesno = \$2;
713                     c2 = tolower(c);
714                     gsub(/_/, \"-\", c2);
715                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
716                 }
717             }
718         }"
719 }
720
721 print_enabled(){
722     suf=$1
723     shift
724     for v; do
725         enabled $v && printf "%s\n" ${v%$suf};
726     done
727 }
728
729 append(){
730     var=$1
731     shift
732     eval "$var=\"\$$var $*\""
733 }
734
735 prepend(){
736     var=$1
737     shift
738     eval "$var=\"$* \$$var\""
739 }
740
741 unique(){
742     var=$1
743     uniq_list=""
744     for tok in $(eval echo \$$var); do
745         uniq_list="$(filter_out $tok $uniq_list) $tok"
746     done
747     eval "$var=\"${uniq_list}\""
748 }
749
750 add_cppflags(){
751     append CPPFLAGS "$@"
752 }
753
754 add_cflags(){
755     append CFLAGS $($cflags_filter "$@")
756 }
757
758 add_cxxflags(){
759     append CXXFLAGS $($cflags_filter "$@")
760 }
761
762 add_asflags(){
763     append ASFLAGS $($asflags_filter "$@")
764 }
765
766 add_ldflags(){
767     append LDFLAGS $($ldflags_filter "$@")
768 }
769
770 add_ldexeflags(){
771     append LDEXEFLAGS $($ldflags_filter "$@")
772 }
773
774 add_stripflags(){
775     append ASMSTRIPFLAGS "$@"
776 }
777
778 add_extralibs(){
779     prepend extralibs $($ldflags_filter "$@")
780 }
781
782 add_host_cppflags(){
783     append host_cppflags "$@"
784 }
785
786 add_host_cflags(){
787     append host_cflags $($host_cflags_filter "$@")
788 }
789
790 add_host_ldflags(){
791     append host_ldflags $($host_ldflags_filter "$@")
792 }
793
794 add_compat(){
795     append compat_objs $1
796     shift
797     map 'add_cppflags -D$v' "$@"
798 }
799
800 check_cmd(){
801     log "$@"
802     "$@" >> $logfile 2>&1
803 }
804
805 check_stat(){
806     log check_stat "$@"
807     stat "$1" >> $logfile 2>&1
808 }
809
810 cc_o(){
811     eval printf '%s\\n' $CC_O
812 }
813
814 cc_e(){
815     eval printf '%s\\n' $CC_E
816 }
817
818 check_cc(){
819     log check_cc "$@"
820     cat > $TMPC
821     log_file $TMPC
822     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
823 }
824
825 check_cxx(){
826     log check_cxx "$@"
827     cat > $TMPCPP
828     log_file $TMPCPP
829     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
830 }
831
832 check_oc(){
833     log check_oc "$@"
834     cat > $TMPM
835     log_file $TMPM
836     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
837 }
838
839 check_cpp(){
840     log check_cpp "$@"
841     cat > $TMPC
842     log_file $TMPC
843     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
844 }
845
846 as_o(){
847     eval printf '%s\\n' $AS_O
848 }
849
850 check_as(){
851     log check_as "$@"
852     cat > $TMPS
853     log_file $TMPS
854     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
855 }
856
857 check_inline_asm(){
858     log check_inline_asm "$@"
859     name="$1"
860     code="$2"
861     shift 2
862     disable $name
863     check_cc "$@" <<EOF && enable $name
864 void foo(void){ __asm__ volatile($code); }
865 EOF
866 }
867
868 check_insn(){
869     log check_insn "$@"
870     check_inline_asm ${1}_inline "\"$2\""
871     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
872 }
873
874 check_yasm(){
875     log check_yasm "$@"
876     echo "$1" > $TMPS
877     log_file $TMPS
878     shift 1
879     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
880 }
881
882 ld_o(){
883     eval printf '%s\\n' $LD_O
884 }
885
886 check_ld(){
887     log check_ld "$@"
888     type=$1
889     shift 1
890     flags=$(filter_out '-l*|*.so' $@)
891     libs=$(filter '-l*|*.so' $@)
892     check_$type $($cflags_filter $flags) || return
893     flags=$($ldflags_filter $flags)
894     libs=$($ldflags_filter $libs)
895     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
896 }
897
898 print_include(){
899     hdr=$1
900     test "${hdr%.h}" = "${hdr}" &&
901         echo "#include $hdr"    ||
902         echo "#include <$hdr>"
903 }
904
905 check_code(){
906     log check_code "$@"
907     check=$1
908     headers=$2
909     code=$3
910     shift 3
911     {
912         for hdr in $headers; do
913             print_include $hdr
914         done
915         echo "int main(void) { $code; return 0; }"
916     } | check_$check "$@"
917 }
918
919 check_cppflags(){
920     log check_cppflags "$@"
921     check_cc "$@" <<EOF && append CPPFLAGS "$@"
922 int x;
923 EOF
924 }
925
926 test_cflags(){
927     log test_cflags "$@"
928     set -- $($cflags_filter "$@")
929     check_cc "$@" <<EOF
930 int x;
931 EOF
932 }
933
934 check_cflags(){
935     log check_cflags "$@"
936     test_cflags "$@" && add_cflags "$@"
937 }
938
939 check_cxxflags(){
940     log check_cxxflags "$@"
941     set -- $($cflags_filter "$@")
942     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
943 int x;
944 EOF
945 }
946
947 test_ldflags(){
948     log test_ldflags "$@"
949     check_ld "cc" "$@" <<EOF
950 int main(void){ return 0; }
951 EOF
952 }
953
954 check_ldflags(){
955     log check_ldflags "$@"
956     test_ldflags "$@" && add_ldflags "$@"
957 }
958
959 test_stripflags(){
960     log test_stripflags "$@"
961     # call check_cc to get a fresh TMPO
962     check_cc <<EOF
963 int main(void) { return 0; }
964 EOF
965     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
966 }
967
968 check_stripflags(){
969     log check_stripflags "$@"
970     test_stripflags "$@" && add_stripflags "$@"
971 }
972
973 check_header(){
974     log check_header "$@"
975     header=$1
976     shift
977     disable_safe $header
978     check_cpp "$@" <<EOF && enable_safe $header
979 #include <$header>
980 int x;
981 EOF
982 }
983
984 check_header_oc(){
985     log check_header_oc "$@"
986     rm -f -- "$TMPO"
987     header=$1
988     shift
989     disable_safe $header
990     {
991        echo "#include <$header>"
992        echo "int main(void) { return 0; }"
993     } | check_oc && check_stat "$TMPO" && enable_safe $headers
994 }
995
996 check_func(){
997     log check_func "$@"
998     func=$1
999     shift
1000     disable $func
1001     check_ld "cc" "$@" <<EOF && enable $func
1002 extern int $func();
1003 int main(void){ $func(); }
1004 EOF
1005 }
1006
1007 check_mathfunc(){
1008     log check_mathfunc "$@"
1009     func=$1
1010     narg=$2
1011     shift 2
1012     test $narg = 2 && args="f, g" || args="f"
1013     disable $func
1014     check_ld "cc" "$@" <<EOF && enable $func
1015 #include <math.h>
1016 float foo(float f, float g) { return $func($args); }
1017 int main(void){ return (int) foo; }
1018 EOF
1019 }
1020
1021 check_func_headers(){
1022     log check_func_headers "$@"
1023     headers=$1
1024     funcs=$2
1025     shift 2
1026     {
1027         for hdr in $headers; do
1028             print_include $hdr
1029         done
1030         for func in $funcs; do
1031             echo "long check_$func(void) { return (long) $func; }"
1032         done
1033         echo "int main(void) { return 0; }"
1034     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1035 }
1036
1037 check_class_headers_cpp(){
1038     log check_class_headers_cpp "$@"
1039     headers=$1
1040     classes=$2
1041     shift 2
1042     {
1043         for hdr in $headers; do
1044             echo "#include <$hdr>"
1045         done
1046         echo "int main(void) { "
1047         i=1
1048         for class in $classes; do
1049             echo "$class obj$i;"
1050             i=$(expr $i + 1)
1051         done
1052         echo "return 0; }"
1053     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1054 }
1055
1056 check_cpp_condition(){
1057     log check_cpp_condition "$@"
1058     header=$1
1059     condition=$2
1060     shift 2
1061     check_cpp "$@" <<EOF
1062 #include <$header>
1063 #if !($condition)
1064 #error "unsatisfied condition: $condition"
1065 #endif
1066 EOF
1067 }
1068
1069 check_lib(){
1070     log check_lib "$@"
1071     header="$1"
1072     func="$2"
1073     shift 2
1074     check_header $header && check_func $func "$@" && add_extralibs "$@"
1075 }
1076
1077 check_lib2(){
1078     log check_lib2 "$@"
1079     headers="$1"
1080     funcs="$2"
1081     shift 2
1082     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1083 }
1084
1085 check_lib_cpp(){
1086     log check_lib_cpp "$@"
1087     headers="$1"
1088     classes="$2"
1089     shift 2
1090     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1091 }
1092
1093 check_pkg_config(){
1094     log check_pkg_config "$@"
1095     pkgandversion="$1"
1096     pkg="${1%% *}"
1097     headers="$2"
1098     funcs="$3"
1099     shift 3
1100     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1101     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1102     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1103     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1104         set_safe ${pkg}_cflags $pkg_cflags   &&
1105         set_safe ${pkg}_libs   $pkg_libs
1106 }
1107
1108 check_exec(){
1109     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1110 }
1111
1112 check_exec_crash(){
1113     code=$(cat)
1114
1115     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1116     # are safe but may not be available everywhere.  Thus we use
1117     # raise(SIGTERM) instead.  The check is run in a subshell so we
1118     # can redirect the "Terminated" message from the shell.  SIGBUS
1119     # is not defined by standard C so it is used conditionally.
1120
1121     (check_exec "$@") >> $logfile 2>&1 <<EOF
1122 #include <signal.h>
1123 static void sighandler(int sig){
1124     raise(SIGTERM);
1125 }
1126 int foo(void){
1127     $code
1128 }
1129 int (*func_ptr)(void) = foo;
1130 int main(void){
1131     signal(SIGILL, sighandler);
1132     signal(SIGFPE, sighandler);
1133     signal(SIGSEGV, sighandler);
1134 #ifdef SIGBUS
1135     signal(SIGBUS, sighandler);
1136 #endif
1137     return func_ptr();
1138 }
1139 EOF
1140 }
1141
1142 check_type(){
1143     log check_type "$@"
1144     headers=$1
1145     type=$2
1146     shift 2
1147     disable_safe "$type"
1148     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1149 }
1150
1151 check_struct(){
1152     log check_struct "$@"
1153     headers=$1
1154     struct=$2
1155     member=$3
1156     shift 3
1157     disable_safe "${struct}_${member}"
1158     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1159         enable_safe "${struct}_${member}"
1160 }
1161
1162 check_builtin(){
1163     log check_builtin "$@"
1164     name=$1
1165     headers=$2
1166     builtin=$3
1167     shift 3
1168     disable "$name"
1169     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1170 }
1171
1172 check_compile_assert(){
1173     log check_compile_assert "$@"
1174     name=$1
1175     headers=$2
1176     condition=$3
1177     shift 3
1178     disable "$name"
1179     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1180 }
1181
1182 require(){
1183     name="$1"
1184     header="$2"
1185     func="$3"
1186     shift 3
1187     check_lib $header $func "$@" || die "ERROR: $name not found"
1188 }
1189
1190 require2(){
1191     name="$1"
1192     headers="$2"
1193     func="$3"
1194     shift 3
1195     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1196 }
1197
1198 require_cpp(){
1199     name="$1"
1200     headers="$2"
1201     classes="$3"
1202     shift 3
1203     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1204 }
1205
1206 require_pkg_config(){
1207     pkg="$1"
1208     check_pkg_config "$@" || die "ERROR: $pkg not found"
1209     add_cflags    $(get_safe ${pkg}_cflags)
1210     add_extralibs $(get_safe ${pkg}_libs)
1211 }
1212
1213 require_libfreetype(){
1214     log require_libfreetype "$@"
1215     pkg="freetype2"
1216     check_cmd $pkg_config --exists --print-errors $pkg \
1217       || die "ERROR: $pkg not found"
1218     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1219     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1220     {
1221         echo "#include <ft2build.h>"
1222         echo "#include FT_FREETYPE_H"
1223         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1224         echo "int main(void) { return 0; }"
1225     } | check_ld "cc" $pkg_cflags $pkg_libs \
1226       && set_safe ${pkg}_cflags $pkg_cflags \
1227       && set_safe ${pkg}_libs   $pkg_libs \
1228       || die "ERROR: $pkg not found"
1229     add_cflags    $(get_safe ${pkg}_cflags)
1230     add_extralibs $(get_safe ${pkg}_libs)
1231 }
1232
1233 hostcc_e(){
1234     eval printf '%s\\n' $HOSTCC_E
1235 }
1236
1237 hostcc_o(){
1238     eval printf '%s\\n' $HOSTCC_O
1239 }
1240
1241 check_host_cc(){
1242     log check_host_cc "$@"
1243     cat > $TMPC
1244     log_file $TMPC
1245     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1246 }
1247
1248 check_host_cpp(){
1249     log check_host_cpp "$@"
1250     cat > $TMPC
1251     log_file $TMPC
1252     check_cmd $host_cc $host_cppflags $host_cflags "$@" $(hostcc_e $TMPO) $TMPC
1253 }
1254
1255 check_host_cppflags(){
1256     log check_host_cppflags "$@"
1257     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1258 int x;
1259 EOF
1260 }
1261
1262 check_host_cflags(){
1263     log check_host_cflags "$@"
1264     set -- $($host_cflags_filter "$@")
1265     check_host_cc "$@" <<EOF && append host_cflags "$@"
1266 int x;
1267 EOF
1268 }
1269
1270 check_host_cpp_condition(){
1271     log check_host_cpp_condition "$@"
1272     header=$1
1273     condition=$2
1274     shift 2
1275     check_host_cpp "$@" <<EOF
1276 #include <$header>
1277 #if !($condition)
1278 #error "unsatisfied condition: $condition"
1279 #endif
1280 EOF
1281 }
1282
1283 apply(){
1284     file=$1
1285     shift
1286     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1287 }
1288
1289 cp_if_changed(){
1290     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1291     mkdir -p "$(dirname $2)"
1292     $cp_f "$1" "$2"
1293 }
1294
1295 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1296 # system-dependent things.
1297
1298 COMPONENT_LIST="
1299     bsfs
1300     decoders
1301     demuxers
1302     encoders
1303     filters
1304     hwaccels
1305     indevs
1306     muxers
1307     outdevs
1308     parsers
1309     protocols
1310 "
1311
1312 EXAMPLE_LIST="
1313     avio_reading_example
1314     decoding_encoding_example
1315     demuxing_decoding_example
1316     extract_mvs_example
1317     filter_audio_example
1318     filtering_audio_example
1319     filtering_video_example
1320     metadata_example
1321     muxing_example
1322     remuxing_example
1323     resampling_audio_example
1324     scaling_video_example
1325     transcode_aac_example
1326     transcoding_example
1327 "
1328
1329 EXTERNAL_LIBRARY_LIST="
1330     avisynth
1331     bzlib
1332     crystalhd
1333     decklink
1334     frei0r
1335     gnutls
1336     iconv
1337     ladspa
1338     libaacplus
1339     libass
1340     libbluray
1341     libbs2b
1342     libcaca
1343     libcdio
1344     libcelt
1345     libdc1394
1346     libfaac
1347     libfdk_aac
1348     libflite
1349     libfontconfig
1350     libfreetype
1351     libfribidi
1352     libgme
1353     libgsm
1354     libiec61883
1355     libilbc
1356     libmodplug
1357     libmp3lame
1358     libnut
1359     libopencore_amrnb
1360     libopencore_amrwb
1361     libopencv
1362     libopenjpeg
1363     libopus
1364     libpulse
1365     libquvi
1366     librtmp
1367     libschroedinger
1368     libshine
1369     libsmbclient
1370     libsoxr
1371     libspeex
1372     libssh
1373     libstagefright_h264
1374     libtheora
1375     libtwolame
1376     libutvideo
1377     libv4l2
1378     libvidstab
1379     libvo_aacenc
1380     libvo_amrwbenc
1381     libvorbis
1382     libvpx
1383     libwavpack
1384     libwebp
1385     libx264
1386     libx265
1387     libxavs
1388     libxcb
1389     libxcb_shm
1390     libxcb_shape
1391     libxcb_xfixes
1392     libxvid
1393     libzmq
1394     libzvbi
1395     lzma
1396     openal
1397     opencl
1398     opengl
1399     openssl
1400     sdl
1401     x11grab
1402     xlib
1403     zlib
1404 "
1405
1406 DOCUMENT_LIST="
1407     doc
1408     htmlpages
1409     manpages
1410     podpages
1411     txtpages
1412 "
1413
1414 FEATURE_LIST="
1415     ftrapv
1416     gray
1417     hardcoded_tables
1418     runtime_cpudetect
1419     safe_bitstream_reader
1420     shared
1421     small
1422     static
1423     swscale_alpha
1424 "
1425
1426 HWACCEL_LIST="
1427     dxva2
1428     vaapi
1429     vda
1430     vdpau
1431     xvmc
1432 "
1433
1434 LIBRARY_LIST="
1435     avcodec
1436     avdevice
1437     avfilter
1438     avformat
1439     avresample
1440     avutil
1441     postproc
1442     swresample
1443     swscale
1444 "
1445
1446 LICENSE_LIST="
1447     gpl
1448     nonfree
1449     version3
1450 "
1451
1452 PROGRAM_LIST="
1453     ffplay
1454     ffprobe
1455     ffserver
1456     ffmpeg
1457 "
1458
1459 SUBSYSTEM_LIST="
1460     dct
1461     dwt
1462     error_resilience
1463     faan
1464     fast_unaligned
1465     fft
1466     lsp
1467     lzo
1468     mdct
1469     pixelutils
1470     network
1471     rdft
1472 "
1473
1474 CONFIG_LIST="
1475     $COMPONENT_LIST
1476     $DOCUMENT_LIST
1477     $EXAMPLE_LIST
1478     $EXTERNAL_LIBRARY_LIST
1479     $FEATURE_LIST
1480     $HWACCEL_LIST
1481     $LICENSE_LIST
1482     $LIBRARY_LIST
1483     $PROGRAM_LIST
1484     $SUBSYSTEM_LIST
1485     fontconfig
1486     incompatible_libav_abi
1487     memalign_hack
1488     memory_poisoning
1489     neon_clobber_test
1490     pic
1491     pod2man
1492     raise_major
1493     thumb
1494     xmm_clobber_test
1495 "
1496
1497 THREADS_LIST="
1498     pthreads
1499     os2threads
1500     w32threads
1501 "
1502
1503 ATOMICS_LIST="
1504     atomics_gcc
1505     atomics_suncc
1506     atomics_win32
1507 "
1508
1509 ARCH_LIST="
1510     aarch64
1511     alpha
1512     arm
1513     avr32
1514     avr32_ap
1515     avr32_uc
1516     bfin
1517     ia64
1518     m68k
1519     mips
1520     mips64
1521     parisc
1522     ppc
1523     ppc64
1524     s390
1525     sh4
1526     sparc
1527     sparc64
1528     tilegx
1529     tilepro
1530     tomi
1531     x86
1532     x86_32
1533     x86_64
1534 "
1535
1536 ARCH_EXT_LIST_ARM="
1537     armv5te
1538     armv6
1539     armv6t2
1540     armv8
1541     neon
1542     vfp
1543     vfpv3
1544     setend
1545 "
1546
1547 ARCH_EXT_LIST_MIPS="
1548     mipsfpu
1549     mips32r2
1550     mipsdspr1
1551     mipsdspr2
1552 "
1553
1554 ARCH_EXT_LIST_X86_SIMD="
1555     amd3dnow
1556     amd3dnowext
1557     avx
1558     avx2
1559     fma3
1560     fma4
1561     mmx
1562     mmxext
1563     sse
1564     sse2
1565     sse3
1566     sse4
1567     sse42
1568     ssse3
1569     xop
1570 "
1571
1572 ARCH_EXT_LIST_PPC="
1573     altivec
1574     dcbzl
1575     ldbrx
1576     ppc4xx
1577     vsx
1578 "
1579
1580 ARCH_EXT_LIST_X86="
1581     $ARCH_EXT_LIST_X86_SIMD
1582     cpunop
1583     i686
1584 "
1585
1586 ARCH_EXT_LIST="
1587     $ARCH_EXT_LIST_ARM
1588     $ARCH_EXT_LIST_PPC
1589     $ARCH_EXT_LIST_X86
1590     $ARCH_EXT_LIST_MIPS
1591     loongson
1592 "
1593
1594 ARCH_FEATURES="
1595     aligned_stack
1596     fast_64bit
1597     fast_clz
1598     fast_cmov
1599     local_aligned_8
1600     local_aligned_16
1601     local_aligned_32
1602     simd_align_16
1603 "
1604
1605 BUILTIN_LIST="
1606     atomic_cas_ptr
1607     atomic_compare_exchange
1608     machine_rw_barrier
1609     MemoryBarrier
1610     mm_empty
1611     rdtsc
1612     sarestart
1613     sync_val_compare_and_swap
1614 "
1615 HAVE_LIST_CMDLINE="
1616     inline_asm
1617     symver
1618     yasm
1619 "
1620
1621 HAVE_LIST_PUB="
1622     bigendian
1623     fast_unaligned
1624     incompatible_libav_abi
1625 "
1626
1627 HEADERS_LIST="
1628     alsa_asoundlib_h
1629     altivec_h
1630     arpa_inet_h
1631     asm_types_h
1632     cdio_paranoia_h
1633     cdio_paranoia_paranoia_h
1634     CL_cl_h
1635     dev_bktr_ioctl_bt848_h
1636     dev_bktr_ioctl_meteor_h
1637     dev_ic_bt8xx_h
1638     dev_video_bktr_ioctl_bt848_h
1639     dev_video_meteor_ioctl_meteor_h
1640     direct_h
1641     dlfcn_h
1642     dxva_h
1643     ES2_gl_h
1644     gsm_h
1645     io_h
1646     mach_mach_time_h
1647     machine_ioctl_bt848_h
1648     machine_ioctl_meteor_h
1649     malloc_h
1650     openjpeg_1_5_openjpeg_h
1651     OpenGL_gl3_h
1652     poll_h
1653     sndio_h
1654     soundcard_h
1655     sys_mman_h
1656     sys_param_h
1657     sys_resource_h
1658     sys_select_h
1659     sys_soundcard_h
1660     sys_time_h
1661     sys_un_h
1662     sys_videoio_h
1663     termios_h
1664     udplite_h
1665     unistd_h
1666     windows_h
1667     winsock2_h
1668 "
1669
1670 INTRINSICS_LIST="
1671     intrinsics_neon
1672 "
1673
1674 MATH_FUNCS="
1675     atanf
1676     atan2f
1677     cbrt
1678     cbrtf
1679     cosf
1680     exp2
1681     exp2f
1682     expf
1683     isinf
1684     isnan
1685     ldexpf
1686     llrint
1687     llrintf
1688     log2
1689     log2f
1690     log10f
1691     lrint
1692     lrintf
1693     powf
1694     rint
1695     round
1696     roundf
1697     sinf
1698     trunc
1699     truncf
1700 "
1701
1702 SYSTEM_FUNCS="
1703     access
1704     aligned_malloc
1705     clock_gettime
1706     closesocket
1707     CommandLineToArgvW
1708     CoTaskMemFree
1709     CryptGenRandom
1710     dlopen
1711     fcntl
1712     flt_lim
1713     fork
1714     getaddrinfo
1715     gethrtime
1716     getopt
1717     GetProcessAffinityMask
1718     GetProcessMemoryInfo
1719     GetProcessTimes
1720     getrusage
1721     getservbyport
1722     GetSystemTimeAsFileTime
1723     gettimeofday
1724     glob
1725     glXGetProcAddress
1726     gmtime_r
1727     inet_aton
1728     isatty
1729     jack_port_get_latency_range
1730     kbhit
1731     localtime_r
1732     lzo1x_999_compress
1733     mach_absolute_time
1734     MapViewOfFile
1735     MoveFileExA
1736     memalign
1737     mkstemp
1738     mmap
1739     mprotect
1740     nanosleep
1741     PeekNamedPipe
1742     posix_memalign
1743     pthread_cancel
1744     sched_getaffinity
1745     SetConsoleTextAttribute
1746     setmode
1747     setrlimit
1748     Sleep
1749     strerror_r
1750     sysconf
1751     sysctl
1752     usleep
1753     VirtualAlloc
1754     wglGetProcAddress
1755 "
1756
1757 TOOLCHAIN_FEATURES="
1758     as_dn_directive
1759     as_func
1760     asm_mod_q
1761     attribute_may_alias
1762     attribute_packed
1763     ebp_available
1764     ebx_available
1765     gnu_as
1766     gnu_windres
1767     ibm_asm
1768     inline_asm_labels
1769     inline_asm_nonlocal_labels
1770     inline_asm_direct_symbol_refs
1771     pragma_deprecated
1772     rsync_contimeout
1773     symver_asm_label
1774     symver_gnu_asm
1775     vfp_args
1776     xform_asm
1777     xmm_clobbers
1778 "
1779
1780 TYPES_LIST="
1781     CONDITION_VARIABLE_Ptr
1782     socklen_t
1783     struct_addrinfo
1784     struct_group_source_req
1785     struct_ip_mreq_source
1786     struct_ipv6_mreq
1787     struct_pollfd
1788     struct_rusage_ru_maxrss
1789     struct_sctp_event_subscribe
1790     struct_sockaddr_in6
1791     struct_sockaddr_sa_len
1792     struct_sockaddr_storage
1793     struct_stat_st_mtim_tv_nsec
1794     struct_v4l2_frmivalenum_discrete
1795 "
1796
1797 HAVE_LIST="
1798     $ARCH_EXT_LIST
1799     $(add_suffix _external $ARCH_EXT_LIST)
1800     $(add_suffix _inline   $ARCH_EXT_LIST)
1801     $ARCH_FEATURES
1802     $ATOMICS_LIST
1803     $BUILTIN_LIST
1804     $HAVE_LIST_CMDLINE
1805     $HAVE_LIST_PUB
1806     $HEADERS_LIST
1807     $INTRINSICS_LIST
1808     $MATH_FUNCS
1809     $SYSTEM_FUNCS
1810     $THREADS_LIST
1811     $TOOLCHAIN_FEATURES
1812     $TYPES_LIST
1813     atomics_native
1814     dos_paths
1815     dxva2api_cobj
1816     dxva2_lib
1817     libc_msvcrt
1818     libdc1394_1
1819     libdc1394_2
1820     makeinfo
1821     makeinfo_html
1822     perl
1823     pod2man
1824     sdl
1825     texi2html
1826     threads
1827     vdpau_x11
1828     xlib
1829 "
1830
1831 # options emitted with CONFIG_ prefix but not available on the command line
1832 CONFIG_EXTRA="
1833     aandcttables
1834     ac3dsp
1835     audio_frame_queue
1836     audiodsp
1837     blockdsp
1838     bswapdsp
1839     cabac
1840     dvprofile
1841     exif
1842     faandct
1843     faanidct
1844     fdctdsp
1845     frame_thread_encoder
1846     gcrypt
1847     golomb
1848     gplv3
1849     h263dsp
1850     h264chroma
1851     h264dsp
1852     h264pred
1853     h264qpel
1854     hpeldsp
1855     huffman
1856     huffyuvdsp
1857     huffyuvencdsp
1858     idctdsp
1859     iirfilter
1860     intrax8
1861     lgplv3
1862     llauddsp
1863     llviddsp
1864     lpc
1865     me_cmp
1866     mpeg_er
1867     mpegaudio
1868     mpegaudiodsp
1869     mpegvideo
1870     mpegvideoenc
1871     nettle
1872     pixblockdsp
1873     qpeldsp
1874     rangecoder
1875     riffdec
1876     riffenc
1877     rtpdec
1878     rtpenc_chain
1879     sinewin
1880     startcode
1881     tpeldsp
1882     videodsp
1883     vp3dsp
1884     wma_freqs
1885 "
1886
1887 CMDLINE_SELECT="
1888     $ARCH_EXT_LIST
1889     $CONFIG_LIST
1890     $HAVE_LIST_CMDLINE
1891     $THREADS_LIST
1892     asm
1893     cross_compile
1894     debug
1895     extra_warnings
1896     logging
1897     lto
1898     optimizations
1899     rpath
1900     stripping
1901 "
1902
1903 PATHS_LIST="
1904     bindir
1905     datadir
1906     docdir
1907     incdir
1908     libdir
1909     mandir
1910     prefix
1911     shlibdir
1912 "
1913
1914 CMDLINE_SET="
1915     $PATHS_LIST
1916     ar
1917     arch
1918     as
1919     assert_level
1920     build_suffix
1921     cc
1922     cpu
1923     cross_prefix
1924     cxx
1925     dep_cc
1926     doxygen
1927     extra_version
1928     gas
1929     host_cc
1930     host_cflags
1931     host_ld
1932     host_ldflags
1933     host_libs
1934     host_os
1935     install
1936     ld
1937     logfile
1938     malloc_prefix
1939     nm
1940     optflags
1941     pkg_config
1942     pkg_config_flags
1943     progs_suffix
1944     random_seed
1945     ranlib
1946     samples
1947     strip
1948     sws_max_filter_size
1949     sysinclude
1950     sysroot
1951     target_exec
1952     target_os
1953     target_path
1954     target_samples
1955     tempprefix
1956     toolchain
1957     valgrind
1958     yasmexe
1959 "
1960
1961 CMDLINE_APPEND="
1962     extra_cflags
1963     extra_cxxflags
1964     host_cppflags
1965 "
1966
1967 # code dependency declarations
1968
1969 # architecture extensions
1970
1971 armv5te_deps="arm"
1972 armv6_deps="arm"
1973 armv6t2_deps="arm"
1974 armv8_deps="aarch64"
1975 neon_deps_any="aarch64 arm"
1976 intrinsics_neon_deps="neon"
1977 vfp_deps_any="aarch64 arm"
1978 vfpv3_deps="vfp"
1979 setend_deps="arm"
1980
1981 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1982
1983 mipsfpu_deps="mips"
1984 mips32r2_deps="mips"
1985 mipsdspr1_deps="mips"
1986 mipsdspr2_deps="mips"
1987
1988 altivec_deps="ppc"
1989 ppc4xx_deps="ppc"
1990 vsx_deps="ppc"
1991
1992 cpunop_deps="i686"
1993 x86_64_select="i686"
1994 x86_64_suggest="fast_cmov"
1995
1996 amd3dnow_deps="mmx"
1997 amd3dnowext_deps="amd3dnow"
1998 i686_deps="x86"
1999 mmx_deps="x86"
2000 mmxext_deps="mmx"
2001 sse_deps="mmxext"
2002 sse2_deps="sse"
2003 sse3_deps="sse2"
2004 ssse3_deps="sse3"
2005 sse4_deps="ssse3"
2006 sse42_deps="sse4"
2007 avx_deps="sse42"
2008 xop_deps="avx"
2009 fma3_deps="avx"
2010 fma4_deps="avx"
2011 avx2_deps="avx"
2012
2013 mmx_external_deps="yasm"
2014 mmx_inline_deps="inline_asm"
2015 mmx_suggest="mmx_external mmx_inline"
2016
2017 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
2018     eval dep=\$${ext}_deps
2019     eval ${ext}_external_deps='"${dep}_external"'
2020     eval ${ext}_inline_deps='"${dep}_inline"'
2021     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
2022 done
2023
2024 aligned_stack_if_any="aarch64 ppc x86"
2025 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
2026 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
2027 fast_unaligned_if_any="aarch64 ppc x86"
2028 simd_align_16_if_any="altivec neon sse"
2029
2030 # system capabilities
2031
2032 symver_if_any="symver_asm_label symver_gnu_asm"
2033
2034 # threading support
2035 atomics_gcc_if_any="sync_val_compare_and_swap atomic_compare_exchange"
2036 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
2037 atomics_win32_if="MemoryBarrier"
2038 atomics_native_if_any="$ATOMICS_LIST"
2039 w32threads_deps="atomics_native"
2040 threads_if_any="$THREADS_LIST"
2041
2042 # subsystems
2043 dct_select="rdft"
2044 error_resilience_select="me_cmp"
2045 faandct_deps="faan fdctdsp"
2046 faanidct_deps="faan idctdsp"
2047 frame_thread_encoder_deps="encoders threads"
2048 intrax8_select="error_resilience"
2049 mdct_select="fft"
2050 rdft_select="fft"
2051 me_cmp_select="fdctdsp idctdsp pixblockdsp"
2052 mpeg_er_select="error_resilience"
2053 mpegaudio_select="mpegaudiodsp"
2054 mpegaudiodsp_select="dct"
2055 mpegvideo_select="blockdsp h264chroma hpeldsp idctdsp me_cmp videodsp"
2056 mpegvideoenc_select="me_cmp mpegvideo pixblockdsp qpeldsp"
2057
2058 # decoders / encoders
2059 aac_decoder_select="mdct sinewin"
2060 aac_encoder_select="audio_frame_queue iirfilter mdct sinewin"
2061 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2062 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2063 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2064 ac3_encoder_select="ac3dsp audiodsp mdct me_cmp"
2065 ac3_fixed_encoder_select="ac3dsp audiodsp mdct me_cmp"
2066 aic_decoder_select="golomb idctdsp"
2067 alac_encoder_select="lpc"
2068 als_decoder_select="bswapdsp"
2069 amrnb_decoder_select="lsp"
2070 amrwb_decoder_select="lsp"
2071 amv_decoder_select="sp5x_decoder exif"
2072 amv_encoder_select="aandcttables mpegvideoenc"
2073 ape_decoder_select="bswapdsp llauddsp"
2074 apng_decoder_select="zlib"
2075 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2076 asv1_encoder_select="bswapdsp fdctdsp pixblockdsp"
2077 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2078 asv2_encoder_select="bswapdsp fdctdsp pixblockdsp"
2079 atrac1_decoder_select="mdct sinewin"
2080 atrac3_decoder_select="mdct"
2081 atrac3p_decoder_select="mdct sinewin"
2082 avrn_decoder_select="exif"
2083 bink_decoder_select="blockdsp hpeldsp"
2084 binkaudio_dct_decoder_select="mdct rdft dct sinewin wma_freqs"
2085 binkaudio_rdft_decoder_select="mdct rdft sinewin wma_freqs"
2086 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2087 cllc_decoder_select="bswapdsp"
2088 comfortnoise_encoder_select="lpc"
2089 cook_decoder_select="audiodsp mdct sinewin"
2090 cscd_decoder_select="lzo"
2091 cscd_decoder_suggest="zlib"
2092 dca_decoder_select="mdct"
2093 dirac_decoder_select="dwt golomb videodsp mpegvideoenc"
2094 dnxhd_decoder_select="blockdsp idctdsp"
2095 dnxhd_encoder_select="aandcttables blockdsp fdctdsp idctdsp mpegvideoenc pixblockdsp"
2096 dvvideo_decoder_select="dvprofile idctdsp"
2097 dvvideo_encoder_select="dvprofile fdctdsp me_cmp pixblockdsp"
2098 dxa_decoder_select="zlib"
2099 eac3_decoder_select="ac3_decoder"
2100 eac3_encoder_select="ac3_encoder"
2101 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2102 eatgq_decoder_select="aandcttables"
2103 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2104 exr_decoder_select="zlib"
2105 ffv1_decoder_select="golomb rangecoder"
2106 ffv1_encoder_select="rangecoder"
2107 ffvhuff_decoder_select="huffyuv_decoder"
2108 ffvhuff_encoder_select="huffyuv_encoder"
2109 fic_decoder_select="golomb"
2110 flac_decoder_select="golomb"
2111 flac_encoder_select="bswapdsp golomb lpc"
2112 flashsv_decoder_select="zlib"
2113 flashsv_encoder_select="zlib"
2114 flashsv2_encoder_select="zlib"
2115 flashsv2_decoder_select="zlib"
2116 flv_decoder_select="h263_decoder"
2117 flv_encoder_select="h263_encoder"
2118 fourxm_decoder_select="blockdsp bswapdsp"
2119 fraps_decoder_select="bswapdsp huffman"
2120 g2m_decoder_select="blockdsp idctdsp zlib"
2121 g729_decoder_select="audiodsp"
2122 h261_decoder_select="mpeg_er mpegvideo"
2123 h261_encoder_select="aandcttables mpegvideoenc"
2124 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2125 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2126 h263i_decoder_select="h263_decoder"
2127 h263p_encoder_select="h263_encoder"
2128 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel startcode videodsp"
2129 h264_decoder_suggest="error_resilience"
2130 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2131 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2132 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2133 iac_decoder_select="imc_decoder"
2134 imc_decoder_select="bswapdsp fft mdct sinewin"
2135 indeo3_decoder_select="hpeldsp"
2136 interplay_video_decoder_select="hpeldsp"
2137 jpegls_decoder_select="golomb mjpeg_decoder"
2138 jpegls_encoder_select="golomb"
2139 jv_decoder_select="blockdsp"
2140 lagarith_decoder_select="huffyuvdsp"
2141 ljpeg_encoder_select="aandcttables idctdsp"
2142 loco_decoder_select="golomb"
2143 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2144 metasound_decoder_select="lsp mdct sinewin"
2145 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2146 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp"
2147 mjpeg_encoder_select="aandcttables mpegvideoenc"
2148 mjpegb_decoder_select="mjpeg_decoder"
2149 mlp_decoder_select="mlp_parser"
2150 motionpixels_decoder_select="bswapdsp"
2151 mp1_decoder_select="mpegaudio"
2152 mp1float_decoder_select="mpegaudio"
2153 mp2_decoder_select="mpegaudio"
2154 mp2float_decoder_select="mpegaudio"
2155 mp3_decoder_select="mpegaudio"
2156 mp3adu_decoder_select="mpegaudio"
2157 mp3adufloat_decoder_select="mpegaudio"
2158 mp3float_decoder_select="mpegaudio"
2159 mp3on4_decoder_select="mpegaudio"
2160 mp3on4float_decoder_select="mpegaudio"
2161 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2162 mpc8_decoder_select="mpegaudiodsp"
2163 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2164 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2165 mpegvideo_decoder_select="error_resilience mpeg_er mpegvideo"
2166 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2167 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2168 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2169 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2170 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2171 mpeg4_encoder_select="h263_encoder"
2172 msmpeg4v1_decoder_select="h263_decoder"
2173 msmpeg4v2_decoder_select="h263_decoder"
2174 msmpeg4v2_encoder_select="h263_encoder"
2175 msmpeg4v3_decoder_select="h263_decoder"
2176 msmpeg4v3_encoder_select="h263_encoder"
2177 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2178 mxpeg_decoder_select="mjpeg_decoder"
2179 nellymoser_decoder_select="mdct sinewin"
2180 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2181 nuv_decoder_select="idctdsp lzo"
2182 on2avc_decoder_select="mdct"
2183 opus_decoder_deps="swresample"
2184 png_decoder_select="zlib"
2185 png_encoder_select="huffyuvencdsp zlib"
2186 prores_decoder_select="blockdsp idctdsp"
2187 prores_encoder_select="fdctdsp"
2188 qcelp_decoder_select="lsp"
2189 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2190 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2191 ra_144_decoder_select="audiodsp"
2192 ralf_decoder_select="golomb"
2193 rawvideo_decoder_select="bswapdsp"
2194 rtjpeg_decoder_select="me_cmp"
2195 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2196 rv10_encoder_select="h263_encoder"
2197 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2198 rv20_encoder_select="h263_encoder"
2199 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2200 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2201 shorten_decoder_select="golomb"
2202 sipr_decoder_select="lsp"
2203 snow_decoder_select="dwt h264qpel hpeldsp me_cmp rangecoder videodsp"
2204 snow_encoder_select="aandcttables dwt h264qpel hpeldsp me_cmp mpegvideoenc rangecoder"
2205 sonic_decoder_select="golomb rangecoder"
2206 sonic_encoder_select="golomb rangecoder"
2207 sonic_ls_encoder_select="golomb rangecoder"
2208 sp5x_decoder_select="mjpeg_decoder"
2209 svq1_decoder_select="hpeldsp"
2210 svq1_encoder_select="aandcttables hpeldsp me_cmp mpegvideoenc"
2211 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2212 svq3_decoder_suggest="zlib"
2213 tak_decoder_select="audiodsp"
2214 theora_decoder_select="vp3_decoder"
2215 thp_decoder_select="mjpeg_decoder"
2216 tiff_decoder_suggest="zlib lzma"
2217 tiff_encoder_suggest="zlib"
2218 truehd_decoder_select="mlp_parser"
2219 truemotion2_decoder_select="bswapdsp"
2220 truespeech_decoder_select="bswapdsp"
2221 tscc_decoder_select="zlib"
2222 twinvq_decoder_select="mdct lsp sinewin"
2223 utvideo_decoder_select="bswapdsp"
2224 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2225 vble_decoder_select="huffyuvdsp"
2226 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp startcode"
2227 vc1image_decoder_select="vc1_decoder"
2228 vorbis_decoder_select="mdct"
2229 vorbis_encoder_select="mdct"
2230 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2231 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2232 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2233 vp6a_decoder_select="vp6_decoder"
2234 vp6f_decoder_select="vp6_decoder"
2235 vp7_decoder_select="h264pred videodsp"
2236 vp8_decoder_select="h264pred videodsp"
2237 vp9_decoder_select="videodsp vp9_parser"
2238 webp_decoder_select="vp8_decoder"
2239 wmalossless_decoder_select="llauddsp"
2240 wmapro_decoder_select="mdct sinewin wma_freqs"
2241 wmav1_decoder_select="mdct sinewin wma_freqs"
2242 wmav1_encoder_select="mdct sinewin wma_freqs"
2243 wmav2_decoder_select="mdct sinewin wma_freqs"
2244 wmav2_encoder_select="mdct sinewin wma_freqs"
2245 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2246 wmv1_decoder_select="h263_decoder"
2247 wmv1_encoder_select="h263_encoder"
2248 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2249 wmv2_encoder_select="h263_encoder"
2250 wmv3_decoder_select="vc1_decoder"
2251 wmv3image_decoder_select="wmv3_decoder"
2252 zerocodec_decoder_select="zlib"
2253 zlib_decoder_select="zlib"
2254 zlib_encoder_select="zlib"
2255 zmbv_decoder_select="zlib"
2256 zmbv_encoder_select="zlib"
2257
2258 # hardware accelerators
2259 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2260 dxva2_deps="dxva2api_h"
2261 vaapi_deps="va_va_h"
2262 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2263 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2264 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2265 xvmc_deps="X11_extensions_XvMClib_h"
2266
2267 h263_vaapi_hwaccel_deps="vaapi"
2268 h263_vaapi_hwaccel_select="h263_decoder"
2269 h263_vdpau_hwaccel_deps="vdpau"
2270 h263_vdpau_hwaccel_select="h263_decoder"
2271 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2272 h264_dxva2_hwaccel_deps="dxva2"
2273 h264_dxva2_hwaccel_select="h264_decoder"
2274 h264_vaapi_hwaccel_deps="vaapi"
2275 h264_vaapi_hwaccel_select="h264_decoder"
2276 h264_vda_decoder_deps="vda"
2277 h264_vda_decoder_select="h264_decoder"
2278 h264_vda_hwaccel_deps="vda"
2279 h264_vda_hwaccel_select="h264_decoder"
2280 h264_vda_old_hwaccel_deps="vda"
2281 h264_vda_old_hwaccel_select="h264_decoder"
2282 h264_vdpau_decoder_deps="vdpau"
2283 h264_vdpau_decoder_select="h264_decoder"
2284 h264_vdpau_hwaccel_deps="vdpau"
2285 h264_vdpau_hwaccel_select="h264_decoder"
2286 mpeg_vdpau_decoder_deps="vdpau"
2287 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2288 mpeg_xvmc_hwaccel_deps="xvmc"
2289 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2290 mpeg1_vdpau_decoder_deps="vdpau"
2291 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2292 mpeg1_vdpau_hwaccel_deps="vdpau"
2293 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2294 mpeg1_xvmc_hwaccel_deps="xvmc"
2295 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2296 mpeg2_crystalhd_decoder_select="crystalhd"
2297 mpeg2_dxva2_hwaccel_deps="dxva2"
2298 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2299 mpeg2_vaapi_hwaccel_deps="vaapi"
2300 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2301 mpeg2_vdpau_hwaccel_deps="vdpau"
2302 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2303 mpeg2_xvmc_hwaccel_deps="xvmc"
2304 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2305 mpeg4_crystalhd_decoder_select="crystalhd"
2306 mpeg4_vaapi_hwaccel_deps="vaapi"
2307 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2308 mpeg4_vdpau_decoder_deps="vdpau"
2309 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2310 mpeg4_vdpau_hwaccel_deps="vdpau"
2311 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2312 msmpeg4_crystalhd_decoder_select="crystalhd"
2313 vc1_crystalhd_decoder_select="crystalhd"
2314 vc1_dxva2_hwaccel_deps="dxva2"
2315 vc1_dxva2_hwaccel_select="vc1_decoder"
2316 vc1_vaapi_hwaccel_deps="vaapi"
2317 vc1_vaapi_hwaccel_select="vc1_decoder"
2318 vc1_vdpau_decoder_deps="vdpau"
2319 vc1_vdpau_decoder_select="vc1_decoder"
2320 vc1_vdpau_hwaccel_deps="vdpau"
2321 vc1_vdpau_hwaccel_select="vc1_decoder"
2322 wmv3_crystalhd_decoder_select="crystalhd"
2323 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2324 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2325 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2326 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2327
2328 # parsers
2329 h264_parser_select="h264_decoder"
2330 hevc_parser_select="hevc_decoder"
2331 mpegvideo_parser_select="mpegvideo"
2332 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2333 vc1_parser_select="mpegvideo startcode vc1_decoder"
2334
2335 # external libraries
2336 libaacplus_encoder_deps="libaacplus"
2337 libcelt_decoder_deps="libcelt"
2338 libfaac_encoder_deps="libfaac"
2339 libfaac_encoder_select="audio_frame_queue"
2340 libfdk_aac_decoder_deps="libfdk_aac"
2341 libfdk_aac_encoder_deps="libfdk_aac"
2342 libfdk_aac_encoder_select="audio_frame_queue"
2343 libgme_demuxer_deps="libgme"
2344 libgsm_decoder_deps="libgsm"
2345 libgsm_encoder_deps="libgsm"
2346 libgsm_ms_decoder_deps="libgsm"
2347 libgsm_ms_encoder_deps="libgsm"
2348 libilbc_decoder_deps="libilbc"
2349 libilbc_encoder_deps="libilbc"
2350 libmodplug_demuxer_deps="libmodplug"
2351 libmp3lame_encoder_deps="libmp3lame"
2352 libmp3lame_encoder_select="audio_frame_queue"
2353 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2354 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2355 libopencore_amrnb_encoder_select="audio_frame_queue"
2356 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2357 libopenjpeg_decoder_deps="libopenjpeg"
2358 libopenjpeg_encoder_deps="libopenjpeg"
2359 libopus_decoder_deps="libopus"
2360 libopus_encoder_deps="libopus"
2361 libopus_encoder_select="audio_frame_queue"
2362 libquvi_demuxer_deps="libquvi"
2363 libschroedinger_decoder_deps="libschroedinger"
2364 libschroedinger_encoder_deps="libschroedinger"
2365 libshine_encoder_deps="libshine"
2366 libshine_encoder_select="audio_frame_queue"
2367 libspeex_decoder_deps="libspeex"
2368 libspeex_encoder_deps="libspeex"
2369 libspeex_encoder_select="audio_frame_queue"
2370 libstagefright_h264_decoder_deps="libstagefright_h264"
2371 libtheora_encoder_deps="libtheora"
2372 libtwolame_encoder_deps="libtwolame"
2373 libvo_aacenc_encoder_deps="libvo_aacenc"
2374 libvo_aacenc_encoder_select="audio_frame_queue"
2375 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2376 libvorbis_decoder_deps="libvorbis"
2377 libvorbis_encoder_deps="libvorbis"
2378 libvorbis_encoder_select="audio_frame_queue"
2379 libvpx_vp8_decoder_deps="libvpx"
2380 libvpx_vp8_encoder_deps="libvpx"
2381 libvpx_vp9_decoder_deps="libvpx"
2382 libvpx_vp9_encoder_deps="libvpx"
2383 libwavpack_encoder_deps="libwavpack"
2384 libwebp_encoder_deps="libwebp"
2385 libx264_encoder_deps="libx264"
2386 libx264rgb_encoder_deps="libx264"
2387 libx265_encoder_deps="libx265"
2388 libxavs_encoder_deps="libxavs"
2389 libxvid_encoder_deps="libxvid"
2390 libutvideo_decoder_deps="libutvideo"
2391 libutvideo_encoder_deps="libutvideo"
2392 libzvbi_teletext_decoder_deps="libzvbi"
2393
2394 # demuxers / muxers
2395 ac3_demuxer_select="ac3_parser"
2396 asf_demuxer_select="riffdec"
2397 asf_muxer_select="riffenc"
2398 asf_stream_muxer_select="asf_muxer"
2399 avi_demuxer_select="riffdec exif"
2400 avi_muxer_select="riffenc"
2401 avisynth_demuxer_deps="avisynth"
2402 avisynth_demuxer_select="riffdec"
2403 caf_demuxer_select="riffdec"
2404 dash_muxer_select="mp4_muxer"
2405 dirac_demuxer_select="dirac_parser"
2406 dts_demuxer_select="dca_parser"
2407 dtshd_demuxer_select="dca_parser"
2408 dv_demuxer_select="dvprofile"
2409 dv_muxer_select="dvprofile"
2410 dxa_demuxer_select="riffdec"
2411 eac3_demuxer_select="ac3_parser"
2412 f4v_muxer_select="mov_muxer"
2413 flac_demuxer_select="flac_parser"
2414 hds_muxer_select="flv_muxer"
2415 hls_muxer_select="mpegts_muxer"
2416 image2_alias_pix_demuxer_select="image2_demuxer"
2417 image2_brender_pix_demuxer_select="image2_demuxer"
2418 ipod_muxer_select="mov_muxer"
2419 ismv_muxer_select="mov_muxer"
2420 libnut_demuxer_deps="libnut"
2421 libnut_muxer_deps="libnut"
2422 matroska_audio_muxer_select="matroska_muxer"
2423 matroska_demuxer_select="riffdec"
2424 matroska_demuxer_suggest="bzlib lzo zlib"
2425 matroska_muxer_select="riffenc"
2426 mmf_muxer_select="riffenc"
2427 mov_demuxer_select="riffdec"
2428 mov_demuxer_suggest="zlib"
2429 mov_muxer_select="riffenc rtpenc_chain ac3_parser"
2430 mp3_demuxer_select="mpegaudio_parser"
2431 mp4_muxer_select="mov_muxer"
2432 mpegts_muxer_select="adts_muxer latm_muxer"
2433 mpegtsraw_demuxer_select="mpegts_demuxer"
2434 mxf_d10_muxer_select="mxf_muxer"
2435 nut_muxer_select="riffenc"
2436 nuv_demuxer_select="riffdec"
2437 oga_muxer_select="ogg_muxer"
2438 ogg_demuxer_select="golomb"
2439 opus_muxer_select="ogg_muxer"
2440 psp_muxer_select="mov_muxer"
2441 rtp_demuxer_select="sdp_demuxer"
2442 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2443 rtsp_demuxer_select="http_protocol rtpdec"
2444 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2445 sap_demuxer_select="sdp_demuxer"
2446 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2447 sdp_demuxer_select="rtpdec"
2448 smoothstreaming_muxer_select="ismv_muxer"
2449 spdif_muxer_select="aac_parser"
2450 spx_muxer_select="ogg_muxer"
2451 tak_demuxer_select="tak_parser"
2452 tg2_muxer_select="mov_muxer"
2453 tgp_muxer_select="mov_muxer"
2454 vobsub_demuxer_select="mpegps_demuxer"
2455 w64_demuxer_select="wav_demuxer"
2456 w64_muxer_select="wav_muxer"
2457 wav_demuxer_select="riffdec"
2458 wav_muxer_select="riffenc"
2459 webm_muxer_select="riffenc"
2460 wtv_demuxer_select="riffdec"
2461 wtv_muxer_select="riffenc"
2462 xmv_demuxer_select="riffdec"
2463 xwma_demuxer_select="riffdec"
2464
2465 # indevs / outdevs
2466 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2467 alsa_outdev_deps="alsa_asoundlib_h"
2468 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia -framework CoreGraphics"
2469 avfoundation_indev_select="avfoundation"
2470 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2471 caca_outdev_deps="libcaca"
2472 decklink_outdev_deps="decklink pthreads"
2473 decklink_outdev_extralibs="-lstdc++"
2474 decklink_indev_deps="decklink pthreads"
2475 decklink_indev_extralibs="-lstdc++"
2476 dshow_indev_deps="IBaseFilter"
2477 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2478 dv1394_indev_deps="dv1394"
2479 dv1394_indev_select="dv_demuxer"
2480 fbdev_indev_deps="linux_fb_h"
2481 fbdev_outdev_deps="linux_fb_h"
2482 gdigrab_indev_deps="CreateDIBSection"
2483 gdigrab_indev_extralibs="-lgdi32"
2484 gdigrab_indev_select="bmp_decoder"
2485 iec61883_indev_deps="libiec61883"
2486 jack_indev_deps="jack_jack_h sem_timedwait"
2487 lavfi_indev_deps="avfilter"
2488 libcdio_indev_deps="libcdio"
2489 libdc1394_indev_deps="libdc1394"
2490 libv4l2_indev_deps="libv4l2"
2491 openal_indev_deps="openal"
2492 opengl_outdev_deps="opengl"
2493 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2494 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2495 pulse_indev_deps="libpulse"
2496 pulse_outdev_deps="libpulse"
2497 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2498 qtkit_indev_select="qtkit"
2499 sdl_outdev_deps="sdl"
2500 sndio_indev_deps="sndio_h"
2501 sndio_outdev_deps="sndio_h"
2502 v4l_indev_deps="linux_videodev_h"
2503 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2504 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2505 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2506 vfwcap_indev_extralibs="-lavicap32"
2507 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2508 xv_outdev_extralibs="-lXv -lX11 -lXext"
2509 x11grab_indev_deps="x11grab"
2510 x11grab_xcb_indev_deps="libxcb"
2511
2512 # protocols
2513 bluray_protocol_deps="libbluray"
2514 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2515 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2516 ffrtmpcrypt_protocol_select="tcp_protocol"
2517 ffrtmphttp_protocol_deps="!librtmp_protocol"
2518 ffrtmphttp_protocol_select="http_protocol"
2519 ftp_protocol_select="tcp_protocol"
2520 gopher_protocol_select="network"
2521 http_protocol_select="tcp_protocol"
2522 httpproxy_protocol_select="tcp_protocol"
2523 https_protocol_select="tls_protocol"
2524 icecast_protocol_select="http_protocol"
2525 librtmp_protocol_deps="librtmp"
2526 librtmpe_protocol_deps="librtmp"
2527 librtmps_protocol_deps="librtmp"
2528 librtmpt_protocol_deps="librtmp"
2529 librtmpte_protocol_deps="librtmp"
2530 libsmbclient_protocol_deps="libsmbclient gplv3"
2531 libssh_protocol_deps="libssh"
2532 mmsh_protocol_select="http_protocol"
2533 mmst_protocol_select="network"
2534 rtmp_protocol_deps="!librtmp_protocol"
2535 rtmp_protocol_select="tcp_protocol"
2536 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2537 rtmps_protocol_deps="!librtmp_protocol"
2538 rtmps_protocol_select="tls_protocol"
2539 rtmpt_protocol_select="ffrtmphttp_protocol"
2540 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2541 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2542 rtp_protocol_select="udp_protocol"
2543 sctp_protocol_deps="struct_sctp_event_subscribe"
2544 sctp_protocol_select="network"
2545 srtp_protocol_select="rtp_protocol"
2546 tcp_protocol_select="network"
2547 tls_protocol_deps_any="openssl gnutls"
2548 tls_protocol_select="tcp_protocol"
2549 udp_protocol_select="network"
2550 udplite_protocol_select="network"
2551 unix_protocol_deps="sys_un_h"
2552 unix_protocol_select="network"
2553
2554 # filters
2555 amovie_filter_deps="avcodec avformat"
2556 aresample_filter_deps="swresample"
2557 ass_filter_deps="libass"
2558 asyncts_filter_deps="avresample"
2559 atempo_filter_deps="avcodec"
2560 atempo_filter_select="rdft"
2561 azmq_filter_deps="libzmq"
2562 blackframe_filter_deps="gpl"
2563 boxblur_filter_deps="gpl"
2564 bs2b_filter_deps="libbs2b"
2565 colormatrix_filter_deps="gpl"
2566 cropdetect_filter_deps="gpl"
2567 delogo_filter_deps="gpl"
2568 deshake_filter_select="pixelutils"
2569 drawtext_filter_deps="libfreetype"
2570 ebur128_filter_deps="gpl"
2571 flite_filter_deps="libflite"
2572 frei0r_filter_deps="frei0r dlopen"
2573 frei0r_src_filter_deps="frei0r dlopen"
2574 geq_filter_deps="gpl"
2575 histeq_filter_deps="gpl"
2576 hqdn3d_filter_deps="gpl"
2577 interlace_filter_deps="gpl"
2578 kerndeint_filter_deps="gpl"
2579 ladspa_filter_deps="ladspa dlopen"
2580 mcdeint_filter_deps="avcodec gpl"
2581 movie_filter_deps="avcodec avformat"
2582 mp_filter_deps="gpl avcodec swscale"
2583 mpdecimate_filter_deps="gpl"
2584 mpdecimate_filter_select="pixelutils"
2585 mptestsrc_filter_deps="gpl"
2586 negate_filter_deps="lut_filter"
2587 perspective_filter_deps="gpl"
2588 ocv_filter_deps="libopencv"
2589 owdenoise_filter_deps="gpl"
2590 pan_filter_deps="swresample"
2591 phase_filter_deps="gpl"
2592 pp_filter_deps="gpl postproc"
2593 pullup_filter_deps="gpl"
2594 removelogo_filter_deps="avcodec avformat swscale"
2595 resample_filter_deps="avresample"
2596 sab_filter_deps="gpl swscale"
2597 scale_filter_deps="swscale"
2598 select_filter_select="pixelutils"
2599 smartblur_filter_deps="gpl swscale"
2600 showspectrum_filter_deps="avcodec"
2601 showspectrum_filter_select="rdft"
2602 spp_filter_deps="gpl avcodec"
2603 spp_filter_select="fft idctdsp fdctdsp me_cmp pixblockdsp"
2604 stereo3d_filter_deps="gpl"
2605 subtitles_filter_deps="avformat avcodec libass"
2606 super2xsai_filter_deps="gpl"
2607 tinterlace_filter_deps="gpl"
2608 vidstabdetect_filter_deps="libvidstab"
2609 vidstabtransform_filter_deps="libvidstab"
2610 pixfmts_super2xsai_test_deps="super2xsai_filter"
2611 tinterlace_merge_test_deps="tinterlace_filter"
2612 tinterlace_pad_test_deps="tinterlace_filter"
2613 zmq_filter_deps="libzmq"
2614 zoompan_filter_deps="swscale"
2615
2616 # examples
2617 avio_reading="avformat avcodec avutil"
2618 avcodec_example_deps="avcodec avutil"
2619 decoding_encoding_example_deps="avcodec avformat avutil"
2620 demuxing_decoding_example_deps="avcodec avformat avutil"
2621 extract_mvs_example_deps="avcodec avformat avutil"
2622 filter_audio_example_deps="avfilter avutil"
2623 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2624 filtering_video_example_deps="avfilter avcodec avformat avutil"
2625 metadata_example_deps="avformat avutil"
2626 muxing_example_deps="avcodec avformat avutil swscale"
2627 remuxing_example_deps="avcodec avformat avutil"
2628 resampling_audio_example_deps="avutil swresample"
2629 scaling_video_example_deps="avutil swscale"
2630 transcode_aac_example_deps="avcodec avformat swresample"
2631 transcoding_example_deps="avfilter avcodec avformat avutil"
2632
2633 # libraries, in linking order
2634 avcodec_deps="avutil"
2635 avdevice_deps="avformat avcodec avutil"
2636 avfilter_deps="avutil"
2637 avformat_deps="avcodec avutil"
2638 avresample_deps="avutil"
2639 postproc_deps="avutil gpl"
2640 swresample_deps="avutil"
2641 swscale_deps="avutil"
2642
2643 # programs
2644 ffmpeg_deps="avcodec avfilter avformat swresample"
2645 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2646                null_filter
2647                setpts_filter trim_filter"
2648 ffplay_deps="avcodec avformat swscale swresample sdl"
2649 ffplay_libs='$sdl_libs'
2650 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2651 ffprobe_deps="avcodec avformat"
2652 ffserver_deps="avformat fork sarestart"
2653 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2654
2655 # documentation
2656 podpages_deps="perl"
2657 manpages_deps="perl pod2man"
2658 htmlpages_deps="perl"
2659 htmlpages_deps_any="makeinfo_html texi2html"
2660 txtpages_deps="perl makeinfo"
2661 doc_deps_any="manpages htmlpages podpages txtpages"
2662
2663 # default parameters
2664
2665 logfile="config.log"
2666
2667 # installation paths
2668 prefix_default="/usr/local"
2669 bindir_default='${prefix}/bin'
2670 datadir_default='${prefix}/share/ffmpeg'
2671 docdir_default='${prefix}/share/doc/ffmpeg'
2672 incdir_default='${prefix}/include'
2673 libdir_default='${prefix}/lib'
2674 mandir_default='${prefix}/share/man'
2675 shlibdir_default="$libdir_default"
2676
2677 # toolchain
2678 ar_default="ar"
2679 cc_default="gcc"
2680 cxx_default="g++"
2681 host_cc_default="gcc"
2682 cp_f="cp -f"
2683 doxygen_default="doxygen"
2684 install="install"
2685 ln_s="ln -s -f"
2686 nm_default="nm -g"
2687 objformat="elf"
2688 pkg_config_default=pkg-config
2689 ranlib_default="ranlib"
2690 strip_default="strip"
2691 yasmexe_default="yasm"
2692 windres_default="windres"
2693
2694 # OS
2695 target_os_default=$(tolower $(uname -s))
2696 host_os=$target_os_default
2697
2698 # machine
2699 if test "$target_os_default" = aix; then
2700     arch_default=$(uname -p)
2701     strip_default="strip -X32_64"
2702 else
2703     arch_default=$(uname -m)
2704 fi
2705 cpu="generic"
2706 intrinsics="none"
2707
2708 # configurable options
2709 enable $PROGRAM_LIST
2710 enable $DOCUMENT_LIST
2711 enable $EXAMPLE_LIST
2712 enable $(filter_out avresample $LIBRARY_LIST)
2713 enable stripping
2714
2715 enable asm
2716 enable debug
2717 enable doc
2718 enable faan faandct faanidct
2719 enable optimizations
2720 enable runtime_cpudetect
2721 enable safe_bitstream_reader
2722 enable static
2723 enable swscale_alpha
2724
2725 sws_max_filter_size_default=256
2726 set_default sws_max_filter_size
2727
2728 # Enable hwaccels by default.
2729 enable dxva2 vaapi vda vdpau xvmc
2730 enable xlib
2731
2732 # build settings
2733 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2734 LIBPREF="lib"
2735 LIBSUF=".a"
2736 FULLNAME='$(NAME)$(BUILDSUF)'
2737 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2738 SLIBPREF="lib"
2739 SLIBSUF=".so"
2740 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2741 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2742 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2743 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2744 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2745 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2746
2747 asflags_filter=echo
2748 cflags_filter=echo
2749 ldflags_filter=echo
2750
2751 AS_C='-c'
2752 AS_O='-o $@'
2753 CC_C='-c'
2754 CC_E='-E -o $@'
2755 CC_O='-o $@'
2756 CXX_C='-c'
2757 CXX_O='-o $@'
2758 LD_O='-o $@'
2759 LD_LIB='-l%'
2760 LD_PATH='-L'
2761 HOSTCC_C='-c'
2762 HOSTCC_E='-E -o $@'
2763 HOSTCC_O='-o $@'
2764 HOSTLD_O='-o $@'
2765
2766 host_libs='-lm'
2767 host_cflags_filter=echo
2768 host_ldflags_filter=echo
2769
2770 target_path='$(CURDIR)'
2771
2772 # since the object filename is not given with the -MM flag, the compiler
2773 # is only able to print the basename, and we must add the path ourselves
2774 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2775 DEPFLAGS='-MM'
2776
2777 # find source path
2778 if test -f configure; then
2779     source_path=.
2780 else
2781     source_path=$(cd $(dirname "$0"); pwd)
2782     echo "$source_path" | grep -q '[[:blank:]]' &&
2783         die "Out of tree builds are impossible with whitespace in source path."
2784     test -e "$source_path/config.h" &&
2785         die "Out of tree builds are impossible with config.h in source dir."
2786 fi
2787
2788 for v in "$@"; do
2789     r=${v#*=}
2790     l=${v%"$r"}
2791     r=$(sh_quote "$r")
2792     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2793 done
2794
2795 find_things(){
2796     thing=$1
2797     pattern=$2
2798     file=$source_path/$3
2799     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2800 }
2801
2802 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2803 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2804 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2805 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2806 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2807 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2808 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2809 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2810 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2811 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2812 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2813
2814 ALL_COMPONENTS="
2815     $BSF_LIST
2816     $DECODER_LIST
2817     $DEMUXER_LIST
2818     $ENCODER_LIST
2819     $FILTER_LIST
2820     $HWACCEL_LIST
2821     $INDEV_LIST
2822     $MUXER_LIST
2823     $OUTDEV_LIST
2824     $PARSER_LIST
2825     $PROTOCOL_LIST
2826 "
2827
2828 for n in $COMPONENT_LIST; do
2829     v=$(toupper ${n%s})_LIST
2830     eval enable \$$v
2831     eval ${n}_if_any="\$$v"
2832 done
2833
2834 enable $ARCH_EXT_LIST
2835
2836 die_unknown(){
2837     echo "Unknown option \"$1\"."
2838     echo "See $0 --help for available options."
2839     exit 1
2840 }
2841
2842 print_3_columns() {
2843     cat | tr ' ' '\n' | sort | pr -r -3 -t
2844 }
2845
2846 show_list() {
2847     suffix=_$1
2848     shift
2849     echo $* | sed s/$suffix//g | print_3_columns
2850     exit 0
2851 }
2852
2853 rand_list(){
2854     IFS=', '
2855     set -- $*
2856     unset IFS
2857     for thing; do
2858         comp=${thing%:*}
2859         prob=${thing#$comp}
2860         prob=${prob#:}
2861         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2862         echo "prob ${prob:-0.5}"
2863         printf '%s\n' $comp
2864     done
2865 }
2866
2867 do_random(){
2868     action=$1
2869     shift
2870     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2871     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2872 }
2873
2874 for opt do
2875     optval="${opt#*=}"
2876     case "$opt" in
2877         --extra-ldflags=*)
2878             add_ldflags $optval
2879         ;;
2880         --extra-ldexeflags=*)
2881             add_ldexeflags $optval
2882         ;;
2883         --extra-libs=*)
2884             add_extralibs $optval
2885         ;;
2886         --disable-devices)
2887             disable $INDEV_LIST $OUTDEV_LIST
2888         ;;
2889         --enable-debug=*)
2890             debuglevel="$optval"
2891         ;;
2892         --disable-programs)
2893             disable $PROGRAM_LIST
2894         ;;
2895         --disable-everything)
2896             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2897         ;;
2898         --disable-all)
2899             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2900             disable $LIBRARY_LIST $PROGRAM_LIST doc
2901         ;;
2902         --enable-random|--disable-random)
2903             action=${opt%%-random}
2904             do_random ${action#--} $COMPONENT_LIST
2905         ;;
2906         --enable-random=*|--disable-random=*)
2907             action=${opt%%-random=*}
2908             do_random ${action#--} $optval
2909         ;;
2910         --enable-*=*|--disable-*=*)
2911             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2912             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2913             eval list=\$$(toupper $thing)_LIST
2914             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2915             list=$(filter "$name" $list)
2916             [ "$list" = "" ] && warn "Option $opt did not match anything"
2917             $action $list
2918         ;;
2919         --enable-?*|--disable-?*)
2920             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2921             if is_in $option $COMPONENT_LIST; then
2922                 test $action = disable && action=unset
2923                 eval $action \$$(toupper ${option%s})_LIST
2924             elif is_in $option $CMDLINE_SELECT; then
2925                 $action $option
2926             else
2927                 die_unknown $opt
2928             fi
2929         ;;
2930         --list-*)
2931             NAME="${opt#--list-}"
2932             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2933             NAME=${NAME%s}
2934             eval show_list $NAME \$$(toupper $NAME)_LIST
2935         ;;
2936         --help|-h) show_help
2937         ;;
2938         --fatal-warnings) enable fatal_warnings
2939         ;;
2940         *)
2941             optname="${opt%%=*}"
2942             optname="${optname#--}"
2943             optname=$(echo "$optname" | sed 's/-/_/g')
2944             if is_in $optname $CMDLINE_SET; then
2945                 eval $optname='$optval'
2946             elif is_in $optname $CMDLINE_APPEND; then
2947                 append $optname "$optval"
2948             else
2949                 die_unknown $opt
2950             fi
2951         ;;
2952     esac
2953 done
2954
2955 disabled logging && logfile=/dev/null
2956
2957 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2958 set >> $logfile
2959
2960 test -n "$cross_prefix" && enable cross_compile
2961
2962 if enabled cross_compile; then
2963     test -n "$arch" && test -n "$target_os" ||
2964         die "Must specify target arch and OS when cross-compiling"
2965 fi
2966
2967 ar_default="${cross_prefix}${ar_default}"
2968 cc_default="${cross_prefix}${cc_default}"
2969 cxx_default="${cross_prefix}${cxx_default}"
2970 nm_default="${cross_prefix}${nm_default}"
2971 pkg_config_default="${cross_prefix}${pkg_config_default}"
2972 ranlib_default="${cross_prefix}${ranlib_default}"
2973 strip_default="${cross_prefix}${strip_default}"
2974 windres_default="${cross_prefix}${windres_default}"
2975
2976 sysinclude_default="${sysroot}/usr/include"
2977
2978 test -n "$valgrind" && toolchain="valgrind-memcheck"
2979
2980 case "$toolchain" in
2981     clang-asan)
2982         cc_default="clang"
2983         add_cflags  -fsanitize=address
2984         add_ldflags -fsanitize=address
2985     ;;
2986     clang-tsan)
2987         cc_default="clang"
2988         add_cflags  -fsanitize=thread -pie
2989         add_ldflags -fsanitize=thread -pie
2990     ;;
2991     clang-usan)
2992         cc_default="clang"
2993         add_cflags  -fsanitize=undefined
2994         add_ldflags -fsanitize=undefined
2995     ;;
2996     gcc-asan)
2997         cc_default="gcc"
2998         add_cflags  -fsanitize=address
2999         add_ldflags -fsanitize=address
3000     ;;
3001     gcc-tsan)
3002         cc_default="gcc"
3003         add_cflags  -fsanitize=thread -pie -fPIC
3004         add_ldflags -fsanitize=thread -pie -fPIC
3005     ;;
3006     gcc-usan)
3007         cc_default="gcc"
3008         add_cflags  -fsanitize=undefined
3009         add_ldflags -fsanitize=undefined
3010     ;;
3011     valgrind-massif)
3012         target_exec_default=${valgrind:-"valgrind"}
3013         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"
3014     ;;
3015     valgrind-memcheck)
3016         target_exec_default=${valgrind:-"valgrind"}
3017         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
3018     ;;
3019     msvc)
3020         # Check whether the current MSVC version needs the C99 converter.
3021         # From MSVC 2013 (compiler major version 18) onwards, it does actually
3022         # support enough of C99 to build ffmpeg. Default to the new
3023         # behaviour if the regexp was unable to match anything, since this
3024         # successfully parses the version number of existing supported
3025         # versions that require the converter (MSVC 2010 and 2012).
3026         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
3027         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
3028             cc_default="cl"
3029         else
3030             cc_default="c99wrap cl"
3031         fi
3032         ld_default="link"
3033         nm_default="dumpbin -symbols"
3034         ar_default="lib"
3035         target_os_default="win32"
3036         # Use a relative path for TMPDIR. This makes sure all the
3037         # ffconf temp files are written with a relative path, avoiding
3038         # issues with msys/win32 path conversion for MSVC parameters
3039         # such as -Fo<file> or -out:<file>.
3040         TMPDIR=.
3041     ;;
3042     icl)
3043         cc_default="icl"
3044         ld_default="xilink"
3045         nm_default="dumpbin -symbols"
3046         ar_default="xilib"
3047         target_os_default="win32"
3048         TMPDIR=.
3049     ;;
3050     gcov)
3051         add_cflags  -fprofile-arcs -ftest-coverage
3052         add_ldflags -fprofile-arcs -ftest-coverage
3053     ;;
3054     hardened)
3055         add_cppflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2
3056         add_cflags   -fno-strict-overflow -fstack-protector-all
3057         add_ldflags  -Wl,-z,relro -Wl,-z,now
3058     ;;
3059     ?*)
3060         die "Unknown toolchain $toolchain"
3061     ;;
3062 esac
3063
3064 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3065     target_exec target_os yasmexe
3066 enabled cross_compile || host_cc_default=$cc
3067 set_default host_cc
3068
3069 if ! $pkg_config --version >/dev/null 2>&1; then
3070     warn "$pkg_config not found, library detection may fail."
3071     pkg_config=false
3072 fi
3073
3074 if test $doxygen != $doxygen_default && \
3075   ! $doxygen --version >/dev/null 2>&1; then
3076     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3077 fi
3078
3079 exesuf() {
3080     case $1 in
3081         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3082     esac
3083 }
3084
3085 EXESUF=$(exesuf $target_os)
3086 HOSTEXESUF=$(exesuf $host_os)
3087
3088 # set temporary file name
3089 : ${TMPDIR:=$TEMPDIR}
3090 : ${TMPDIR:=$TMP}
3091 : ${TMPDIR:=/tmp}
3092
3093 if [ -n "$tempprefix" ] ; then
3094     mktemp(){
3095         echo $tempprefix.${HOSTNAME}.${UID}
3096     }
3097 elif ! check_cmd mktemp -u XXXXXX; then
3098     # simple replacement for missing mktemp
3099     # NOT SAFE FOR GENERAL USE
3100     mktemp(){
3101         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3102     }
3103 fi
3104
3105 tmpfile(){
3106     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3107         (set -C; exec > $tmp) 2>/dev/null ||
3108         die "Unable to create temporary file in $TMPDIR."
3109     append TMPFILES $tmp
3110     eval $1=$tmp
3111 }
3112
3113 trap 'rm -f -- $TMPFILES' EXIT
3114
3115 tmpfile TMPASM .asm
3116 tmpfile TMPC   .c
3117 tmpfile TMPCPP .cpp
3118 tmpfile TMPE   $EXESUF
3119 tmpfile TMPH   .h
3120 tmpfile TMPM   .m
3121 tmpfile TMPO   .o
3122 tmpfile TMPS   .S
3123 tmpfile TMPSH  .sh
3124 tmpfile TMPV   .ver
3125
3126 unset -f mktemp
3127
3128 chmod +x $TMPE
3129
3130 # make sure we can execute files in $TMPDIR
3131 cat > $TMPSH 2>> $logfile <<EOF
3132 #! /bin/sh
3133 EOF
3134 chmod +x $TMPSH >> $logfile 2>&1
3135 if ! $TMPSH >> $logfile 2>&1; then
3136     cat <<EOF
3137 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3138 variable to another directory and make sure that it is not mounted noexec.
3139 EOF
3140     die "Sanity test failed."
3141 fi
3142
3143 armasm_flags(){
3144     for flag; do
3145         case $flag in
3146             # Filter out MSVC cl.exe options from cflags that shouldn't
3147             # be passed to gas-preprocessor
3148             -M[TD]*)                                            ;;
3149             *)                  echo $flag                      ;;
3150         esac
3151    done
3152 }
3153
3154 ccc_flags(){
3155     for flag; do
3156         case $flag in
3157             -std=c99)           echo -c99                       ;;
3158             -mcpu=*)            echo -arch ${flag#*=}           ;;
3159             -mieee)             echo -ieee                      ;;
3160             -O*|-fast)          echo $flag                      ;;
3161             -fno-math-errno)    echo -assume nomath_errno       ;;
3162             -g)                 echo -g3                        ;;
3163             -Wall)              echo -msg_enable level2         ;;
3164             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3165             -Wl,*)              echo $flag                      ;;
3166             -f*|-W*)                                            ;;
3167             *)                  echo $flag                      ;;
3168         esac
3169    done
3170 }
3171
3172 cparser_flags(){
3173     for flag; do
3174         case $flag in
3175             -Wno-switch)             echo -Wno-switch-enum ;;
3176             -Wno-format-zero-length) ;;
3177             -Wdisabled-optimization) ;;
3178             -Wno-pointer-sign)       echo -Wno-other ;;
3179             *)                       echo $flag ;;
3180         esac
3181     done
3182 }
3183
3184 msvc_common_flags(){
3185     for flag; do
3186         case $flag in
3187             # In addition to specifying certain flags under the compiler
3188             # specific filters, they must be specified here as well or else the
3189             # generic catch all at the bottom will print the original flag.
3190             -Wall)                ;;
3191             -std=c99)             ;;
3192             # Common flags
3193             -fomit-frame-pointer) ;;
3194             -g)                   echo -Z7 ;;
3195             -fno-math-errno)      ;;
3196             -fno-common)          ;;
3197             -fno-signed-zeros)    ;;
3198             -fPIC)                ;;
3199             -mthumb)              ;;
3200             -march=*)             ;;
3201             -lz)                  echo zlib.lib ;;
3202             -lavifil32)           echo vfw32.lib ;;
3203             -lavicap32)           echo vfw32.lib user32.lib ;;
3204             -l*)                  echo ${flag#-l}.lib ;;
3205             *)                    echo $flag ;;
3206         esac
3207     done
3208 }
3209
3210 msvc_flags(){
3211     msvc_common_flags "$@"
3212     for flag; do
3213         case $flag in
3214             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3215                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3216                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3217                                        -wd4554 \
3218                                        -wd4273 -wd4701 ;;
3219         esac
3220     done
3221 }
3222
3223 icl_flags(){
3224     msvc_common_flags "$@"
3225     for flag; do
3226         case $flag in
3227             # Despite what Intel's documentation says -Wall, which is supported
3228             # on Windows, does enable remarks so disable them here.
3229             -Wall)                echo $flag -Qdiag-disable:remark ;;
3230             -std=c99)             echo -Qstd=c99 ;;
3231             -flto)                echo -ipo ;;
3232         esac
3233     done
3234 }
3235
3236 icc_flags(){
3237     for flag; do
3238         case $flag in
3239             -flto)                echo -ipo ;;
3240             *)                    echo $flag ;;
3241         esac
3242     done
3243 }
3244
3245 pgi_flags(){
3246     for flag; do
3247         case $flag in
3248             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3249             -fomit-frame-pointer) echo -Mnoframe ;;
3250             -g)                   echo -gopt ;;
3251             *)                    echo $flag ;;
3252         esac
3253     done
3254 }
3255
3256 suncc_flags(){
3257     for flag; do
3258         case $flag in
3259             -march=*|-mcpu=*)
3260                 case "${flag#*=}" in
3261                     native)                   echo -xtarget=native       ;;
3262                     v9|niagara)               echo -xarch=sparc          ;;
3263                     ultrasparc)               echo -xarch=sparcvis       ;;
3264                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3265                     i586|pentium)             echo -xchip=pentium        ;;
3266                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3267                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3268                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3269                     pentium4*)          echo -xtarget=pentium4           ;;
3270                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3271                     *-sse3)             echo -xarch=sse3                 ;;
3272                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3273                     bonnell)                   echo -xarch=ssse3         ;;
3274                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3275                     westmere)                  echo -xtarget=westmere    ;;
3276                     silvermont)                echo -xarch=sse4_2        ;;
3277                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3278                     core-avx*|ivybridge|haswell|broadwell)
3279                                                echo -xarch=avx           ;;
3280                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3281                     btver1)                    echo -xarch=amdsse4a      ;;
3282                     btver2|bdver*)             echo -xarch=avx           ;;
3283                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3284                     k8|opteron|athlon64|athlon-fx)
3285                                                echo -xarch=sse2a         ;;
3286                     athlon*)                   echo -xarch=pentium_proa  ;;
3287                 esac
3288                 ;;
3289             -std=c99)             echo -xc99              ;;
3290             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3291             -fPIC)                echo -KPIC -xcode=pic32 ;;
3292             -W*,*)                echo $flag              ;;
3293             -f*-*|-W*|-mimpure-text)                      ;;
3294             -shared)              echo -G                 ;;
3295             *)                    echo $flag              ;;
3296         esac
3297     done
3298 }
3299
3300 tms470_flags(){
3301     for flag; do
3302         case $flag in
3303             -march=*|-mcpu=*)
3304                 case "${flag#*=}" in
3305                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3306                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3307                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3308                     armv6*|arm11*)          echo -mv=6   ;;
3309                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3310                                             echo -mv=5e  ;;
3311                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3312                 esac
3313                 ;;
3314             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3315             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3316             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3317             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3318             -msoft-float)   echo --float_support=vfplib       ;;
3319             -O[0-3]|-mf=*)  echo $flag                        ;;
3320             -g)             echo -g -mn                       ;;
3321             -pds=*)         echo $flag                        ;;
3322             -D*|-I*)        echo $flag                        ;;
3323             --gcc|--abi=*)  echo $flag                        ;;
3324             -me)            echo $flag                        ;;
3325         esac
3326     done
3327 }
3328
3329 probe_cc(){
3330     pfx=$1
3331     _cc=$2
3332
3333     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3334     unset _ld_o _ldflags _ld_lib _ld_path
3335     unset _depflags _DEPCMD _DEPFLAGS
3336     _flags_filter=echo
3337
3338     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3339         true # no-op to avoid reading stdin in following checks
3340     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3341         _type=llvm_gcc
3342         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3343         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3344         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3345         _cflags_speed='-O3'
3346         _cflags_size='-Os'
3347     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3348         _type=gcc
3349         gcc_version=$($_cc --version | head -n1)
3350         gcc_basever=$($_cc -dumpversion)
3351         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3352         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3353         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3354         if ! $_cc -dumpversion | grep -q '^2\.'; then
3355             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3356         fi
3357         _cflags_speed='-O3'
3358         _cflags_size='-Os'
3359     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3360         _type=icc
3361         _ident=$($_cc --version | head -n1)
3362         _depflags='-MMD'
3363         _cflags_speed='-O3'
3364         _cflags_size='-Os'
3365         _cflags_noopt='-O1'
3366         _flags_filter=icc_flags
3367     elif $_cc -v 2>&1 | grep -q xlc; then
3368         _type=xlc
3369         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3370         _cflags_speed='-O5'
3371         _cflags_size='-O5 -qcompact'
3372     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3373         _type=ccc
3374         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3375         _DEPFLAGS='-M'
3376         _cflags_speed='-fast'
3377         _cflags_size='-O1'
3378         _flags_filter=ccc_flags
3379     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3380         test -d "$sysroot" || die "No valid sysroot specified."
3381         _type=armcc
3382         _ident=$($_cc --vsn | grep -i build | head -n1 | sed 's/.*: //')
3383         armcc_conf="$PWD/armcc.conf"
3384         $_cc --arm_linux_configure                 \
3385              --arm_linux_config_file="$armcc_conf" \
3386              --configure_sysroot="$sysroot"        \
3387              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3388              die "Error creating armcc configuration file."
3389         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3390         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3391         as_default="${cross_prefix}gcc"
3392         _depflags='-MMD'
3393         _cflags_speed='-O3'
3394         _cflags_size='-Os'
3395     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3396         _type=tms470
3397         _ident=$($_cc -version | head -n1 | tr -s ' ')
3398         _flags='--gcc --abi=eabi -me'
3399         _cc_e='-ppl -fe=$@'
3400         _cc_o='-fe=$@'
3401         _depflags='-ppa -ppd=$(@:.o=.d)'
3402         _cflags_speed='-O3 -mf=5'
3403         _cflags_size='-O3 -mf=2'
3404         _flags_filter=tms470_flags
3405     elif $_cc -v 2>&1 | grep -q clang; then
3406         _type=clang
3407         _ident=$($_cc --version | head -n1)
3408         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3409         _cflags_speed='-O3'
3410         _cflags_size='-Os'
3411     elif $_cc -V 2>&1 | grep -q Sun; then
3412         _type=suncc
3413         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3414         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3415         _DEPFLAGS='-xM1 -xc99'
3416         _ldflags='-std=c99'
3417         _cflags_speed='-O5'
3418         _cflags_size='-O5 -xspace'
3419         _flags_filter=suncc_flags
3420     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3421         _type=pathscale
3422         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3423         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3424         _cflags_speed='-O2'
3425         _cflags_size='-Os'
3426         _flags_filter='filter_out -Wdisabled-optimization'
3427     elif $_cc -v 2>&1 | grep -q Open64; then
3428         _type=open64
3429         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3430         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3431         _cflags_speed='-O2'
3432         _cflags_size='-Os'
3433         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3434     elif $_cc -V 2>&1 | grep -q Portland; then
3435         _type=pgi
3436         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3437         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3438         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3439         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3440         _cflags_noopt="-O"
3441         _flags_filter=pgi_flags
3442     elif $_cc 2>&1 | grep -q 'Microsoft.*ARM.*Assembler'; then
3443         _type=armasm
3444         _ident=$($_cc | head -n1)
3445         # 4509: "This form of conditional instruction is deprecated"
3446         _flags="-nologo -ignore 4509"
3447         _flags_filter=armasm_flags
3448     elif $_cc 2>&1 | grep -q Intel; then
3449         _type=icl
3450         _ident=$($cc 2>&1 | head -n1)
3451         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3452         # Not only is O3 broken on 13.x+ but it is slower on all previous
3453         # versions (tested) as well.
3454         _cflags_speed="-O2"
3455         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3456         if $_cc 2>&1 | grep -q Linker; then
3457             _ld_o='-out:$@'
3458         else
3459             _ld_o='-Fe$@'
3460         fi
3461         _cc_o='-Fo$@'
3462         _cc_e='-P'
3463         _flags_filter=icl_flags
3464         _ld_lib='lib%.a'
3465         _ld_path='-libpath:'
3466         # -Qdiag-error to make icl error when seeing certain unknown arguments
3467         _flags='-nologo -Qdiag-error:4044,10157'
3468         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3469         # with MSVC which enables it by default.
3470         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3471         if [ $pfx = hostcc ]; then
3472             append _cflags -Dsnprintf=_snprintf
3473         fi
3474         disable stripping
3475     elif $_cc 2>&1 | grep -q Microsoft; then
3476         _type=msvc
3477         _ident=$($cc 2>&1 | head -n1)
3478         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3479         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3480         _cflags_speed="-O2"
3481         _cflags_size="-O1"
3482         if $_cc 2>&1 | grep -q Linker; then
3483             _ld_o='-out:$@'
3484         else
3485             _ld_o='-Fe$@'
3486         fi
3487         _cc_o='-Fo$@'
3488         _cc_e='-P -Fi$@'
3489         _flags_filter=msvc_flags
3490         _ld_lib='lib%.a'
3491         _ld_path='-libpath:'
3492         _flags='-nologo'
3493         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3494         if [ $pfx = hostcc ]; then
3495             append _cflags -Dsnprintf=_snprintf
3496         fi
3497         disable stripping
3498     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3499         _type=cparser
3500         _ident=$($_cc --version | head -n1)
3501         _depflags='-MMD'
3502         _cflags_speed='-O4'
3503         _cflags_size='-O2'
3504         _flags_filter=cparser_flags
3505     fi
3506
3507     eval ${pfx}_type=\$_type
3508     eval ${pfx}_ident=\$_ident
3509 }
3510
3511 set_ccvars(){
3512     eval ${1}_C=\${_cc_c-\${${1}_C}}
3513     eval ${1}_E=\${_cc_e-\${${1}_E}}
3514     eval ${1}_O=\${_cc_o-\${${1}_O}}
3515
3516     if [ -n "$_depflags" ]; then
3517         eval ${1}_DEPFLAGS=\$_depflags
3518     else
3519         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3520         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3521         eval DEP${1}FLAGS=\$_flags
3522     fi
3523 }
3524
3525 probe_cc cc "$cc"
3526 cflags_filter=$_flags_filter
3527 cflags_speed=$_cflags_speed
3528 cflags_size=$_cflags_size
3529 cflags_noopt=$_cflags_noopt
3530 add_cflags $_flags $_cflags
3531 cc_ldflags=$_ldflags
3532 set_ccvars CC
3533
3534 probe_cc hostcc "$host_cc"
3535 host_cflags_filter=$_flags_filter
3536 add_host_cflags  $_flags $_cflags
3537 set_ccvars HOSTCC
3538
3539 test -n "$cc_type" && enable $cc_type ||
3540     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3541
3542 : ${as_default:=$cc}
3543 : ${dep_cc_default:=$cc}
3544 : ${ld_default:=$cc}
3545 : ${host_ld_default:=$host_cc}
3546 set_default ar as dep_cc ld host_ld windres
3547
3548 probe_cc as "$as"
3549 asflags_filter=$_flags_filter
3550 add_asflags $_flags $_cflags
3551 set_ccvars AS
3552
3553 probe_cc ld "$ld"
3554 ldflags_filter=$_flags_filter
3555 add_ldflags $_flags $_ldflags
3556 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3557 LD_O=${_ld_o-$LD_O}
3558 LD_LIB=${_ld_lib-$LD_LIB}
3559 LD_PATH=${_ld_path-$LD_PATH}
3560
3561 probe_cc hostld "$host_ld"
3562 host_ldflags_filter=$_flags_filter
3563 add_host_ldflags $_flags $_ldflags
3564 HOSTLD_O=${_ld_o-$HOSTLD_O}
3565
3566 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3567     probe_cc depcc "$dep_cc"
3568     CCDEP=${_DEPCMD:-$DEPCMD}
3569     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3570     DEPCCFLAGS=$_flags
3571 fi
3572
3573 if $ar 2>&1 | grep -q Microsoft; then
3574     arflags="-nologo"
3575     ar_o='-out:$@'
3576 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3577     arflags="rq"
3578     ar_o='$@'
3579 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3580     arflags='-Xany -r -c'
3581     ar_o='$@'
3582 else
3583     arflags="rc"
3584     ar_o='$@'
3585 fi
3586
3587 add_cflags $extra_cflags
3588 add_cxxflags $extra_cxxflags
3589 add_asflags $extra_cflags
3590
3591 if test -n "$sysroot"; then
3592     case "$cc_type" in
3593         gcc|llvm_gcc|clang)
3594             add_cppflags --sysroot="$sysroot"
3595             add_ldflags --sysroot="$sysroot"
3596 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3597             add_cppflags -isysroot "$sysroot"
3598             add_ldflags -isysroot "$sysroot"
3599         ;;
3600         tms470)
3601             add_cppflags -I"$sysinclude"
3602             add_ldflags  --sysroot="$sysroot"
3603         ;;
3604     esac
3605 fi
3606
3607 if test "$cpu" = host; then
3608     enabled cross_compile &&
3609         die "--cpu=host makes no sense when cross-compiling."
3610
3611     case "$cc_type" in
3612         gcc|llvm_gcc)
3613             check_native(){
3614                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3615                 sed -n "/cc1.*$1=/{
3616                             s/.*$1=\\([^ ]*\\).*/\\1/
3617                             p
3618                             q
3619                         }" $TMPE
3620             }
3621             cpu=$(check_native -march || check_native -mcpu)
3622         ;;
3623     esac
3624
3625     test "${cpu:-host}" = host &&
3626         die "--cpu=host not supported with compiler $cc"
3627 fi
3628
3629 # Deal with common $arch aliases
3630 case "$arch" in
3631     aarch64|arm64)
3632         arch="aarch64"
3633     ;;
3634     arm*|iPad*|iPhone*)
3635         arch="arm"
3636     ;;
3637     mips*|IP*)
3638         arch="mips"
3639     ;;
3640     parisc*|hppa*)
3641         arch="parisc"
3642     ;;
3643     "Power Macintosh"|ppc*|powerpc*)
3644         arch="ppc"
3645     ;;
3646     s390|s390x)
3647         arch="s390"
3648     ;;
3649     sh4|sh)
3650         arch="sh4"
3651     ;;
3652     sun4u|sparc*)
3653         arch="sparc"
3654     ;;
3655     tilegx|tile-gx)
3656         arch="tilegx"
3657     ;;
3658     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3659         arch="x86"
3660     ;;
3661 esac
3662
3663 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3664 enable $arch
3665
3666 # Add processor-specific flags
3667 if enabled aarch64; then
3668
3669     case $cpu in
3670         armv*)
3671             cpuflags="-march=$cpu"
3672         ;;
3673         *)
3674             cpuflags="-mcpu=$cpu"
3675         ;;
3676     esac
3677
3678 elif enabled alpha; then
3679
3680     cpuflags="-mcpu=$cpu"
3681
3682 elif enabled arm; then
3683
3684     check_arm_arch() {
3685         check_cpp_condition stddef.h \
3686             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3687             $cpuflags
3688     }
3689
3690     probe_arm_arch() {
3691         if   check_arm_arch 4;        then echo armv4;
3692         elif check_arm_arch 4T;       then echo armv4t;
3693         elif check_arm_arch 5;        then echo armv5;
3694         elif check_arm_arch 5E;       then echo armv5e;
3695         elif check_arm_arch 5T;       then echo armv5t;
3696         elif check_arm_arch 5TE;      then echo armv5te;
3697         elif check_arm_arch 5TEJ;     then echo armv5te;
3698         elif check_arm_arch 6;        then echo armv6;
3699         elif check_arm_arch 6J;       then echo armv6j;
3700         elif check_arm_arch 6K;       then echo armv6k;
3701         elif check_arm_arch 6Z;       then echo armv6z;
3702         elif check_arm_arch 6ZK;      then echo armv6zk;
3703         elif check_arm_arch 6T2;      then echo armv6t2;
3704         elif check_arm_arch 7;        then echo armv7;
3705         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3706         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3707         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3708         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3709         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3710         fi
3711     }
3712
3713     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3714
3715     case $cpu in
3716         armv*)
3717             cpuflags="-march=$cpu"
3718             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3719         ;;
3720         *)
3721             cpuflags="-mcpu=$cpu"
3722             case $cpu in
3723                 cortex-a*)                               subarch=armv7a  ;;
3724                 cortex-r*)                               subarch=armv7r  ;;
3725                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3726                 arm11*)                                  subarch=armv6   ;;
3727                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3728                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3729                 *)                             subarch=$(probe_arm_arch) ;;
3730             esac
3731         ;;
3732     esac
3733
3734     case "$subarch" in
3735         armv5t*)    enable fast_clz                ;;
3736         armv[6-8]*)
3737             enable fast_clz
3738             disabled fast_unaligned || enable fast_unaligned
3739             ;;
3740     esac
3741
3742 elif enabled avr32; then
3743
3744     case $cpu in
3745         ap7[02]0[0-2])
3746             subarch="avr32_ap"
3747             cpuflags="-mpart=$cpu"
3748         ;;
3749         ap)
3750             subarch="avr32_ap"
3751             cpuflags="-march=$cpu"
3752         ;;
3753         uc3[ab]*)
3754             subarch="avr32_uc"
3755             cpuflags="-mcpu=$cpu"
3756         ;;
3757         uc)
3758             subarch="avr32_uc"
3759             cpuflags="-march=$cpu"
3760         ;;
3761     esac
3762
3763 elif enabled bfin; then
3764
3765     cpuflags="-mcpu=$cpu"
3766
3767 elif enabled mips; then
3768
3769     cpuflags="-march=$cpu"
3770
3771     case $cpu in
3772         24kc)
3773             disable mipsfpu
3774             disable mipsdspr1
3775             disable mipsdspr2
3776         ;;
3777         24kf*)
3778             disable mipsdspr1
3779             disable mipsdspr2
3780         ;;
3781         24kec|34kc|1004kc)
3782             disable mipsfpu
3783             disable mipsdspr2
3784         ;;
3785         24kef*|34kf*|1004kf*)
3786             disable mipsdspr2
3787         ;;
3788         74kc)
3789             disable mipsfpu
3790         ;;
3791     esac
3792
3793 elif enabled ppc; then
3794
3795     disable ldbrx
3796     disable vsx
3797
3798     case $(tolower $cpu) in
3799         601|ppc601|powerpc601)
3800             cpuflags="-mcpu=601"
3801             disable altivec
3802         ;;
3803         603*|ppc603*|powerpc603*)
3804             cpuflags="-mcpu=603"
3805             disable altivec
3806         ;;
3807         604*|ppc604*|powerpc604*)
3808             cpuflags="-mcpu=604"
3809             disable altivec
3810         ;;
3811         g3|75*|ppc75*|powerpc75*)
3812             cpuflags="-mcpu=750"
3813             disable altivec
3814         ;;
3815         g4|745*|ppc745*|powerpc745*)
3816             cpuflags="-mcpu=7450"
3817         ;;
3818         74*|ppc74*|powerpc74*)
3819             cpuflags="-mcpu=7400"
3820         ;;
3821         g5|970|ppc970|powerpc970)
3822             cpuflags="-mcpu=970"
3823         ;;
3824         power[3-8]*)
3825             cpuflags="-mcpu=$cpu"
3826         ;;
3827         cell)
3828             cpuflags="-mcpu=cell"
3829             enable ldbrx
3830         ;;
3831         e500mc)
3832             cpuflags="-mcpu=e500mc"
3833             disable altivec
3834         ;;
3835         e500v2)
3836             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3837             disable altivec
3838             disable dcbzl
3839         ;;
3840         e500)
3841             cpuflags="-mcpu=8540 -mhard-float"
3842             disable altivec
3843             disable dcbzl
3844         ;;
3845     esac
3846
3847 elif enabled sparc; then
3848
3849     case $cpu in
3850         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3851             cpuflags="-mcpu=$cpu"
3852         ;;
3853         ultrasparc*|niagara[234])
3854             cpuflags="-mcpu=$cpu"
3855         ;;
3856     esac
3857
3858 elif enabled x86; then
3859
3860     case $cpu in
3861         i[345]86|pentium)
3862             cpuflags="-march=$cpu"
3863             disable i686
3864             disable mmx
3865         ;;
3866         # targets that do NOT support nopl and conditional mov (cmov)
3867         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3868             cpuflags="-march=$cpu"
3869             disable i686
3870         ;;
3871         # targets that do support nopl and conditional mov (cmov)
3872         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3873         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3874             cpuflags="-march=$cpu"
3875             enable i686
3876             enable fast_cmov
3877         ;;
3878         # targets that do support conditional mov but on which it's slow
3879         pentium4|pentium4m|prescott|nocona)
3880             cpuflags="-march=$cpu"
3881             enable i686
3882             disable fast_cmov
3883         ;;
3884     esac
3885
3886 fi
3887
3888 if [ "$cpu" != generic ]; then
3889     add_cflags  $cpuflags
3890     add_asflags $cpuflags
3891 fi
3892
3893 # compiler sanity check
3894 check_exec <<EOF
3895 int main(void){ return 0; }
3896 EOF
3897 if test "$?" != 0; then
3898     echo "$cc is unable to create an executable file."
3899     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3900         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3901         echo "Only do this if you know what cross compiling means."
3902     fi
3903     die "C compiler test failed."
3904 fi
3905
3906 add_cppflags -D_ISOC99_SOURCE
3907 add_cxxflags -D__STDC_CONSTANT_MACROS
3908 check_cflags -std=c99
3909 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3910 #include <stdlib.h>
3911 EOF
3912 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3913 #include <stdlib.h>
3914 EOF
3915
3916 add_host_cppflags -D_ISOC99_SOURCE
3917 check_host_cflags -std=c99
3918 check_host_cflags -Wall
3919 check_host_cflags -O3
3920
3921 check_64bit(){
3922     arch32=$1
3923     arch64=$2
3924     expr=$3
3925     check_code cc "" "int test[2*($expr) - 1]" &&
3926         subarch=$arch64 || subarch=$arch32
3927 }
3928
3929 case "$arch" in
3930     aarch64|alpha|ia64)
3931         spic=$shared
3932     ;;
3933     mips)
3934         check_64bit mips mips64 '_MIPS_SIM > 1'
3935         spic=$shared
3936     ;;
3937     parisc)
3938         check_64bit parisc parisc64 'sizeof(void *) > 4'
3939         spic=$shared
3940     ;;
3941     ppc)
3942         check_64bit ppc ppc64 'sizeof(void *) > 4'
3943         spic=$shared
3944     ;;
3945     s390)
3946         check_64bit s390 s390x 'sizeof(void *) > 4'
3947         spic=$shared
3948     ;;
3949     sparc)
3950         check_64bit sparc sparc64 'sizeof(void *) > 4'
3951         spic=$shared
3952     ;;
3953     x86)
3954         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3955         # Treat x32 as x64 for now. Note it also needs spic=$shared
3956         test "$subarch" = "x86_32" && check_cpp_condition stddef.h 'defined(__x86_64__)' &&
3957             subarch=x86_64
3958         if test "$subarch" = "x86_64"; then
3959             spic=$shared
3960         fi
3961     ;;
3962     ppc)
3963         check_cc <<EOF && subarch="ppc64"
3964         int test[(int)sizeof(char*) - 7];
3965 EOF
3966     ;;
3967 esac
3968
3969 enable $subarch
3970 enabled spic && enable_weak pic
3971
3972 # OS specific
3973 case $target_os in
3974     aix)
3975         SHFLAGS=-shared
3976         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3977         enabled shared && add_ldflags -Wl,-brtl
3978         ;;
3979     android)
3980         disable symver
3981         SLIB_INSTALL_NAME='$(SLIBNAME)'
3982         SLIB_INSTALL_LINKS=
3983         # soname not set on purpose
3984         SHFLAGS=-shared
3985         ;;
3986     haiku)
3987         prefix_default="/boot/common"
3988         network_extralibs="-lnetwork"
3989         host_libs=
3990         ;;
3991     sunos)
3992         SHFLAGS='-shared -Wl,-h,$$(@F)'
3993         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3994         network_extralibs="-lsocket -lnsl"
3995         # When using suncc to build, the Solaris linker will mark
3996         # an executable with each instruction set encountered by
3997         # the Solaris assembler.  As our libraries contain their own
3998         # guards for processor-specific code, instead suppress
3999         # generation of the HWCAPS ELF section on Solaris x86 only.
4000         enabled_all suncc x86 &&
4001             echo "hwcap_1 = OVERRIDE;" > mapfile &&
4002             add_ldflags -Wl,-M,mapfile
4003         nm_default='nm -P -g'
4004         ;;
4005     netbsd)
4006         disable symver
4007         oss_indev_extralibs="-lossaudio"
4008         oss_outdev_extralibs="-lossaudio"
4009         enabled gcc || check_ldflags -Wl,-zmuldefs
4010         ;;
4011     openbsd|bitrig)
4012         disable symver
4013         SHFLAGS='-shared'
4014         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
4015         SLIB_INSTALL_LINKS=
4016         oss_indev_extralibs="-lossaudio"
4017         oss_outdev_extralibs="-lossaudio"
4018         ;;
4019     dragonfly)
4020         disable symver
4021         ;;
4022     freebsd)
4023         ;;
4024     bsd/os)
4025         add_extralibs -lpoll -lgnugetopt
4026         strip="strip -d"
4027         ;;
4028     darwin)
4029         enabled ppc && add_asflags -force_cpusubtype_ALL
4030         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
4031         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
4032         strip="${strip} -x"
4033         add_ldflags -Wl,-dynamic,-search_paths_first
4034         SLIBSUF=".dylib"
4035         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
4036         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
4037         objformat="macho"
4038         enabled x86_64 && objformat="macho64"
4039         enabled_any pic shared ||
4040             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
4041         ;;
4042     mingw32*)
4043         if test $target_os = "mingw32ce"; then
4044             disable network
4045         else
4046             target_os=mingw32
4047         fi
4048         LIBTARGET=i386
4049         if enabled x86_64; then
4050             LIBTARGET="i386:x86-64"
4051         elif enabled arm; then
4052             LIBTARGET=arm-wince
4053         fi
4054         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4055         check_ldflags -Wl,--nxcompat
4056         check_ldflags -Wl,--dynamicbase
4057         enabled x86_32 && check_ldflags -Wl,--large-address-aware
4058         shlibdir_default="$bindir_default"
4059         SLIBPREF=""
4060         SLIBSUF=".dll"
4061         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4062         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4063         dlltool="${cross_prefix}dlltool"
4064         if check_cmd lib.exe -list; then
4065             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4066             if enabled x86_64; then