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