doc: make doxygen program configurable
[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     exif
1805     frame_thread_encoder
1806     gcrypt
1807     golomb
1808     gplv3
1809     h263dsp
1810     h264chroma
1811     h264dsp
1812     h264pred
1813     h264qpel
1814     hpeldsp
1815     huffman
1816     huffyuvdsp
1817     huffyuvencdsp
1818     idctdsp
1819     intrax8
1820     lgplv3
1821     llauddsp
1822     llviddsp
1823     lpc
1824     mpeg_er
1825     mpegaudio
1826     mpegaudiodsp
1827     mpegvideo
1828     mpegvideoenc
1829     nettle
1830     qpeldsp
1831     rangecoder
1832     riffdec
1833     riffenc
1834     rtpdec
1835     rtpenc_chain
1836     sinewin
1837     tpeldsp
1838     videodsp
1839     vp3dsp
1840 "
1841
1842 CMDLINE_SELECT="
1843     $ARCH_EXT_LIST
1844     $CONFIG_LIST
1845     $HAVE_LIST_CMDLINE
1846     $THREADS_LIST
1847     asm
1848     cross_compile
1849     debug
1850     extra_warnings
1851     logging
1852     lto
1853     optimizations
1854     rpath
1855     stripping
1856 "
1857
1858 PATHS_LIST="
1859     bindir
1860     datadir
1861     docdir
1862     incdir
1863     libdir
1864     mandir
1865     prefix
1866     shlibdir
1867 "
1868
1869 CMDLINE_SET="
1870     $PATHS_LIST
1871     ar
1872     arch
1873     as
1874     assert_level
1875     build_suffix
1876     cc
1877     cpu
1878     cross_prefix
1879     cxx
1880     dep_cc
1881     doxygen
1882     extra_version
1883     gas
1884     host_cc
1885     host_cflags
1886     host_ld
1887     host_ldflags
1888     host_libs
1889     host_os
1890     install
1891     ld
1892     logfile
1893     malloc_prefix
1894     nm
1895     optflags
1896     pkg_config
1897     pkg_config_flags
1898     progs_suffix
1899     random_seed
1900     ranlib
1901     samples
1902     strip
1903     sws_max_filter_size
1904     sysinclude
1905     sysroot
1906     target_exec
1907     target_os
1908     target_path
1909     target_samples
1910     tempprefix
1911     toolchain
1912     valgrind
1913     yasmexe
1914 "
1915
1916 CMDLINE_APPEND="
1917     extra_cflags
1918     extra_cxxflags
1919     host_cppflags
1920 "
1921
1922 # code dependency declarations
1923
1924 # architecture extensions
1925
1926 armv5te_deps="arm"
1927 armv6_deps="arm"
1928 armv6t2_deps="arm"
1929 armv8_deps="aarch64"
1930 neon_deps_any="aarch64 arm"
1931 vfp_deps_any="aarch64 arm"
1932 vfpv3_deps="vfp"
1933
1934 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1935
1936 mipsfpu_deps="mips"
1937 mips32r2_deps="mips"
1938 mipsdspr1_deps="mips"
1939 mipsdspr2_deps="mips"
1940
1941 altivec_deps="ppc"
1942 ppc4xx_deps="ppc"
1943 vsx_deps="ppc"
1944
1945 cpunop_deps="i686"
1946 x86_64_select="i686"
1947 x86_64_suggest="fast_cmov"
1948
1949 amd3dnow_deps="mmx"
1950 amd3dnowext_deps="amd3dnow"
1951 i686_deps="x86"
1952 mmx_deps="x86"
1953 mmxext_deps="mmx"
1954 sse_deps="mmxext"
1955 sse2_deps="sse"
1956 sse3_deps="sse2"
1957 ssse3_deps="sse3"
1958 sse4_deps="ssse3"
1959 sse42_deps="sse4"
1960 avx_deps="sse42"
1961 xop_deps="avx"
1962 fma3_deps="avx"
1963 fma4_deps="avx"
1964 avx2_deps="avx"
1965
1966 mmx_external_deps="yasm"
1967 mmx_inline_deps="inline_asm"
1968 mmx_suggest="mmx_external mmx_inline"
1969
1970 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1971     eval dep=\$${ext}_deps
1972     eval ${ext}_external_deps='"${dep}_external"'
1973     eval ${ext}_inline_deps='"${dep}_inline"'
1974     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1975 done
1976
1977 aligned_stack_if_any="aarch64 ppc x86"
1978 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1979 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1980 fast_unaligned_if_any="aarch64 ppc x86"
1981
1982 need_memalign="altivec neon sse"
1983
1984 # system capabilities
1985
1986 symver_if_any="symver_asm_label symver_gnu_asm"
1987
1988 # threading support
1989 atomics_gcc_if="sync_val_compare_and_swap"
1990 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1991 atomics_win32_if="MemoryBarrier"
1992 atomics_native_if_any="$ATOMICS_LIST"
1993 w32threads_deps="atomics_native"
1994 threads_if_any="$THREADS_LIST"
1995
1996 # subsystems
1997 dct_select="rdft"
1998 dsputil_select="idctdsp"
1999 error_resilience_select="dsputil"
2000 frame_thread_encoder_deps="encoders threads"
2001 intrax8_select="error_resilience"
2002 mdct_select="fft"
2003 rdft_select="fft"
2004 mpeg_er_select="error_resilience"
2005 mpegaudio_select="mpegaudiodsp"
2006 mpegaudiodsp_select="dct"
2007 mpegvideo_select="blockdsp dsputil h264chroma hpeldsp idctdsp videodsp"
2008 mpegvideoenc_select="dsputil mpegvideo qpeldsp"
2009
2010 # decoders / encoders
2011 aac_decoder_select="mdct sinewin"
2012 aac_encoder_select="audio_frame_queue mdct sinewin"
2013 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2014 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2015 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2016 ac3_encoder_select="ac3dsp audiodsp dsputil mdct"
2017 ac3_fixed_encoder_select="ac3dsp audiodsp dsputil mdct"
2018 aic_decoder_select="golomb idctdsp"
2019 alac_encoder_select="lpc"
2020 als_decoder_select="bswapdsp"
2021 amrnb_decoder_select="lsp"
2022 amrwb_decoder_select="lsp"
2023 amv_decoder_select="sp5x_decoder exif"
2024 amv_encoder_select="aandcttables mpegvideoenc"
2025 ape_decoder_select="bswapdsp llauddsp"
2026 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2027 asv1_encoder_select="bswapdsp dsputil"
2028 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2029 asv2_encoder_select="bswapdsp dsputil"
2030 atrac1_decoder_select="mdct sinewin"
2031 atrac3_decoder_select="mdct"
2032 atrac3p_decoder_select="mdct sinewin"
2033 avrn_decoder_select="exif"
2034 bink_decoder_select="blockdsp hpeldsp"
2035 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
2036 binkaudio_rdft_decoder_select="mdct rdft sinewin"
2037 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2038 cllc_decoder_select="bswapdsp"
2039 comfortnoise_encoder_select="lpc"
2040 cook_decoder_select="audiodsp mdct sinewin"
2041 cscd_decoder_select="lzo"
2042 cscd_decoder_suggest="zlib"
2043 dca_decoder_select="mdct"
2044 dirac_decoder_select="dsputil dwt golomb videodsp"
2045 dnxhd_decoder_select="blockdsp idctdsp"
2046 dnxhd_encoder_select="aandcttables blockdsp dsputil idctdsp mpegvideoenc"
2047 dvvideo_decoder_select="idctdsp"
2048 dvvideo_encoder_select="dsputil"
2049 dxa_decoder_select="zlib"
2050 eac3_decoder_select="ac3_decoder"
2051 eac3_encoder_select="ac3_encoder"
2052 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2053 eatgq_decoder_select="aandcttables"
2054 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2055 exr_decoder_select="zlib"
2056 ffv1_decoder_select="golomb rangecoder"
2057 ffv1_encoder_select="rangecoder"
2058 ffvhuff_decoder_select="huffyuv_decoder"
2059 ffvhuff_encoder_select="huffyuv_encoder"
2060 fic_decoder_select="golomb"
2061 flac_decoder_select="golomb"
2062 flac_encoder_select="bswapdsp golomb lpc"
2063 flashsv_decoder_select="zlib"
2064 flashsv_encoder_select="zlib"
2065 flashsv2_encoder_select="zlib"
2066 flashsv2_decoder_select="zlib"
2067 flv_decoder_select="h263_decoder"
2068 flv_encoder_select="h263_encoder"
2069 fourxm_decoder_select="blockdsp bswapdsp"
2070 fraps_decoder_select="bswapdsp huffman"
2071 g2m_decoder_select="blockdsp idctdsp zlib"
2072 g729_decoder_select="audiodsp"
2073 h261_decoder_select="mpeg_er mpegvideo"
2074 h261_encoder_select="aandcttables mpegvideoenc"
2075 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2076 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2077 h263i_decoder_select="h263_decoder"
2078 h263p_encoder_select="h263_encoder"
2079 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2080 h264_decoder_suggest="error_resilience"
2081 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2082 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2083 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2084 iac_decoder_select="imc_decoder"
2085 imc_decoder_select="bswapdsp fft mdct sinewin"
2086 indeo3_decoder_select="hpeldsp"
2087 interplay_video_decoder_select="hpeldsp"
2088 jpegls_decoder_select="golomb mjpeg_decoder"
2089 jpegls_encoder_select="golomb"
2090 jv_decoder_select="blockdsp"
2091 lagarith_decoder_select="huffyuvdsp"
2092 ljpeg_encoder_select="aandcttables idctdsp"
2093 loco_decoder_select="golomb"
2094 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2095 metasound_decoder_select="lsp mdct sinewin"
2096 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2097 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp"
2098 mjpeg_encoder_select="aandcttables mpegvideoenc"
2099 mjpegb_decoder_select="mjpeg_decoder"
2100 mlp_decoder_select="mlp_parser"
2101 motionpixels_decoder_select="bswapdsp"
2102 mp1_decoder_select="mpegaudio"
2103 mp1float_decoder_select="mpegaudio"
2104 mp2_decoder_select="mpegaudio"
2105 mp2float_decoder_select="mpegaudio"
2106 mp3_decoder_select="mpegaudio"
2107 mp3adu_decoder_select="mpegaudio"
2108 mp3adufloat_decoder_select="mpegaudio"
2109 mp3float_decoder_select="mpegaudio"
2110 mp3on4_decoder_select="mpegaudio"
2111 mp3on4float_decoder_select="mpegaudio"
2112 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2113 mpc8_decoder_select="mpegaudiodsp"
2114 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2115 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2116 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2117 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2118 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2119 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2120 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2121 mpeg4_encoder_select="h263_encoder"
2122 msmpeg4v1_decoder_select="h263_decoder"
2123 msmpeg4v2_decoder_select="h263_decoder"
2124 msmpeg4v2_encoder_select="h263_encoder"
2125 msmpeg4v3_decoder_select="h263_decoder"
2126 msmpeg4v3_encoder_select="h263_encoder"
2127 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2128 mxpeg_decoder_select="mjpeg_decoder"
2129 nellymoser_decoder_select="mdct sinewin"
2130 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2131 nuv_decoder_select="idctdsp lzo"
2132 on2avc_decoder_select="mdct"
2133 opus_decoder_deps="swresample"
2134 png_decoder_select="zlib"
2135 png_encoder_select="huffyuvencdsp zlib"
2136 prores_decoder_select="blockdsp idctdsp"
2137 prores_encoder_select="dsputil"
2138 qcelp_decoder_select="lsp"
2139 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2140 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2141 ra_144_decoder_select="audiodsp"
2142 ralf_decoder_select="golomb"
2143 rawvideo_decoder_select="dsputil"
2144 rtjpeg_decoder_select="dsputil"
2145 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2146 rv10_encoder_select="h263_encoder"
2147 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2148 rv20_encoder_select="h263_encoder"
2149 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2150 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2151 shorten_decoder_select="golomb"
2152 sipr_decoder_select="lsp"
2153 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
2154 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
2155 sonic_decoder_select="golomb rangecoder"
2156 sonic_encoder_select="golomb rangecoder"
2157 sonic_ls_encoder_select="golomb rangecoder"
2158 sp5x_decoder_select="mjpeg_decoder"
2159 svq1_decoder_select="hpeldsp"
2160 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
2161 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2162 svq3_decoder_suggest="zlib"
2163 tak_decoder_select="audiodsp"
2164 theora_decoder_select="vp3_decoder"
2165 thp_decoder_select="mjpeg_decoder"
2166 tiff_decoder_suggest="zlib"
2167 tiff_encoder_suggest="zlib"
2168 truehd_decoder_select="mlp_parser"
2169 truemotion2_decoder_select="bswapdsp"
2170 truespeech_decoder_select="bswapdsp"
2171 tscc_decoder_select="zlib"
2172 twinvq_decoder_select="mdct lsp sinewin"
2173 utvideo_decoder_select="bswapdsp"
2174 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2175 vble_decoder_select="huffyuvdsp"
2176 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp"
2177 vc1image_decoder_select="vc1_decoder"
2178 vorbis_decoder_select="mdct"
2179 vorbis_encoder_select="mdct"
2180 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2181 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2182 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2183 vp6a_decoder_select="vp6_decoder"
2184 vp6f_decoder_select="vp6_decoder"
2185 vp7_decoder_select="h264pred videodsp"
2186 vp8_decoder_select="h264pred videodsp"
2187 vp9_decoder_select="videodsp vp9_parser"
2188 webp_decoder_select="vp8_decoder"
2189 wmalossless_decoder_select="llauddsp"
2190 wmapro_decoder_select="mdct sinewin"
2191 wmav1_decoder_select="mdct sinewin"
2192 wmav1_encoder_select="mdct sinewin"
2193 wmav2_decoder_select="mdct sinewin"
2194 wmav2_encoder_select="mdct sinewin"
2195 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2196 wmv1_decoder_select="h263_decoder"
2197 wmv1_encoder_select="h263_encoder"
2198 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2199 wmv2_encoder_select="h263_encoder"
2200 wmv3_decoder_select="vc1_decoder"
2201 wmv3image_decoder_select="wmv3_decoder"
2202 zerocodec_decoder_select="zlib"
2203 zlib_decoder_select="zlib"
2204 zlib_encoder_select="zlib"
2205 zmbv_decoder_select="zlib"
2206 zmbv_encoder_select="zlib"
2207
2208 # hardware accelerators
2209 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2210 dxva2_deps="dxva2api_h"
2211 vaapi_deps="va_va_h"
2212 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2213 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2214 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2215 xvmc_deps="X11_extensions_XvMClib_h"
2216
2217 h263_vaapi_hwaccel_deps="vaapi"
2218 h263_vaapi_hwaccel_select="h263_decoder"
2219 h263_vdpau_hwaccel_deps="vdpau"
2220 h263_vdpau_hwaccel_select="h263_decoder"
2221 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2222 h264_dxva2_hwaccel_deps="dxva2"
2223 h264_dxva2_hwaccel_select="h264_decoder"
2224 h264_vaapi_hwaccel_deps="vaapi"
2225 h264_vaapi_hwaccel_select="h264_decoder"
2226 h264_vda_decoder_deps="vda"
2227 h264_vda_decoder_select="h264_decoder"
2228 h264_vda_hwaccel_deps="vda"
2229 h264_vda_hwaccel_select="h264_decoder"
2230 h264_vda_old_hwaccel_deps="vda"
2231 h264_vda_old_hwaccel_select="h264_decoder"
2232 h264_vdpau_decoder_deps="vdpau"
2233 h264_vdpau_decoder_select="h264_decoder"
2234 h264_vdpau_hwaccel_deps="vdpau"
2235 h264_vdpau_hwaccel_select="h264_decoder"
2236 mpeg_vdpau_decoder_deps="vdpau"
2237 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2238 mpeg_xvmc_hwaccel_deps="xvmc"
2239 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2240 mpeg1_vdpau_decoder_deps="vdpau"
2241 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2242 mpeg1_vdpau_hwaccel_deps="vdpau"
2243 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2244 mpeg1_xvmc_hwaccel_deps="xvmc"
2245 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2246 mpeg2_crystalhd_decoder_select="crystalhd"
2247 mpeg2_dxva2_hwaccel_deps="dxva2"
2248 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2249 mpeg2_vaapi_hwaccel_deps="vaapi"
2250 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2251 mpeg2_vdpau_hwaccel_deps="vdpau"
2252 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2253 mpeg2_xvmc_hwaccel_deps="xvmc"
2254 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2255 mpeg4_crystalhd_decoder_select="crystalhd"
2256 mpeg4_vaapi_hwaccel_deps="vaapi"
2257 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2258 mpeg4_vdpau_decoder_deps="vdpau"
2259 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2260 mpeg4_vdpau_hwaccel_deps="vdpau"
2261 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2262 msmpeg4_crystalhd_decoder_select="crystalhd"
2263 vc1_crystalhd_decoder_select="crystalhd"
2264 vc1_dxva2_hwaccel_deps="dxva2"
2265 vc1_dxva2_hwaccel_select="vc1_decoder"
2266 vc1_vaapi_hwaccel_deps="vaapi"
2267 vc1_vaapi_hwaccel_select="vc1_decoder"
2268 vc1_vdpau_decoder_deps="vdpau"
2269 vc1_vdpau_decoder_select="vc1_decoder"
2270 vc1_vdpau_hwaccel_deps="vdpau"
2271 vc1_vdpau_hwaccel_select="vc1_decoder"
2272 wmv3_crystalhd_decoder_select="crystalhd"
2273 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2274 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2275 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2276 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2277
2278 # parsers
2279 h264_parser_select="h264_decoder"
2280 hevc_parser_select="hevc_decoder"
2281 mpegvideo_parser_select="mpegvideo"
2282 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2283 vc1_parser_select="mpegvideo vc1_decoder"
2284
2285 # external libraries
2286 libaacplus_encoder_deps="libaacplus"
2287 libcelt_decoder_deps="libcelt"
2288 libfaac_encoder_deps="libfaac"
2289 libfaac_encoder_select="audio_frame_queue"
2290 libfdk_aac_decoder_deps="libfdk_aac"
2291 libfdk_aac_encoder_deps="libfdk_aac"
2292 libfdk_aac_encoder_select="audio_frame_queue"
2293 libgme_demuxer_deps="libgme"
2294 libgsm_decoder_deps="libgsm"
2295 libgsm_encoder_deps="libgsm"
2296 libgsm_ms_decoder_deps="libgsm"
2297 libgsm_ms_encoder_deps="libgsm"
2298 libilbc_decoder_deps="libilbc"
2299 libilbc_encoder_deps="libilbc"
2300 libmodplug_demuxer_deps="libmodplug"
2301 libmp3lame_encoder_deps="libmp3lame"
2302 libmp3lame_encoder_select="audio_frame_queue"
2303 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2304 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2305 libopencore_amrnb_encoder_select="audio_frame_queue"
2306 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2307 libopenjpeg_decoder_deps="libopenjpeg"
2308 libopenjpeg_encoder_deps="libopenjpeg"
2309 libopus_decoder_deps="libopus"
2310 libopus_encoder_deps="libopus"
2311 libopus_encoder_select="audio_frame_queue"
2312 libquvi_demuxer_deps="libquvi"
2313 libschroedinger_decoder_deps="libschroedinger"
2314 libschroedinger_encoder_deps="libschroedinger"
2315 libshine_encoder_deps="libshine"
2316 libshine_encoder_select="audio_frame_queue"
2317 libspeex_decoder_deps="libspeex"
2318 libspeex_encoder_deps="libspeex"
2319 libspeex_encoder_select="audio_frame_queue"
2320 libstagefright_h264_decoder_deps="libstagefright_h264"
2321 libtheora_encoder_deps="libtheora"
2322 libtwolame_encoder_deps="libtwolame"
2323 libvo_aacenc_encoder_deps="libvo_aacenc"
2324 libvo_aacenc_encoder_select="audio_frame_queue"
2325 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2326 libvorbis_decoder_deps="libvorbis"
2327 libvorbis_encoder_deps="libvorbis"
2328 libvorbis_encoder_select="audio_frame_queue"
2329 libvpx_vp8_decoder_deps="libvpx"
2330 libvpx_vp8_encoder_deps="libvpx"
2331 libvpx_vp9_decoder_deps="libvpx"
2332 libvpx_vp9_encoder_deps="libvpx"
2333 libwavpack_encoder_deps="libwavpack"
2334 libwebp_encoder_deps="libwebp"
2335 libx264_encoder_deps="libx264"
2336 libx264rgb_encoder_deps="libx264"
2337 libx265_encoder_deps="libx265"
2338 libxavs_encoder_deps="libxavs"
2339 libxvid_encoder_deps="libxvid"
2340 libutvideo_decoder_deps="libutvideo"
2341 libutvideo_encoder_deps="libutvideo"
2342 libzvbi_teletext_decoder_deps="libzvbi"
2343
2344 # demuxers / muxers
2345 ac3_demuxer_select="ac3_parser"
2346 asf_demuxer_select="riffdec"
2347 asf_muxer_select="riffenc"
2348 asf_stream_muxer_select="asf_muxer"
2349 avi_demuxer_select="riffdec exif"
2350 avi_muxer_select="riffenc"
2351 avisynth_demuxer_deps="avisynth"
2352 avisynth_demuxer_select="riffdec"
2353 caf_demuxer_select="riffdec"
2354 dirac_demuxer_select="dirac_parser"
2355 dts_demuxer_select="dca_parser"
2356 dtshd_demuxer_select="dca_parser"
2357 dxa_demuxer_select="riffdec"
2358 eac3_demuxer_select="ac3_parser"
2359 f4v_muxer_select="mov_muxer"
2360 flac_demuxer_select="flac_parser"
2361 hds_muxer_select="flv_muxer"
2362 hls_muxer_select="mpegts_muxer"
2363 image2_alias_pix_demuxer_select="image2_demuxer"
2364 image2_brender_pix_demuxer_select="image2_demuxer"
2365 ipod_muxer_select="mov_muxer"
2366 ismv_muxer_select="mov_muxer"
2367 libnut_demuxer_deps="libnut"
2368 libnut_muxer_deps="libnut"
2369 matroska_audio_muxer_select="matroska_muxer"
2370 matroska_demuxer_select="riffdec"
2371 matroska_demuxer_suggest="bzlib lzo zlib"
2372 matroska_muxer_select="riffenc"
2373 mmf_muxer_select="riffenc"
2374 mov_demuxer_select="riffdec"
2375 mov_demuxer_suggest="zlib"
2376 mov_muxer_select="riffenc rtpenc_chain"
2377 mp3_demuxer_select="mpegaudio_parser"
2378 mp4_muxer_select="mov_muxer"
2379 mpegts_muxer_select="adts_muxer latm_muxer"
2380 mpegtsraw_demuxer_select="mpegts_demuxer"
2381 mxf_d10_muxer_select="mxf_muxer"
2382 nut_muxer_select="riffenc"
2383 nuv_demuxer_select="riffdec"
2384 ogg_demuxer_select="golomb"
2385 psp_muxer_select="mov_muxer"
2386 rtp_demuxer_select="sdp_demuxer"
2387 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2388 rtsp_demuxer_select="http_protocol rtpdec"
2389 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2390 sap_demuxer_select="sdp_demuxer"
2391 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2392 sdp_demuxer_select="rtpdec"
2393 smoothstreaming_muxer_select="ismv_muxer"
2394 spdif_muxer_select="aac_parser"
2395 tak_demuxer_select="tak_parser"
2396 tg2_muxer_select="mov_muxer"
2397 tgp_muxer_select="mov_muxer"
2398 vobsub_demuxer_select="mpegps_demuxer"
2399 w64_demuxer_select="wav_demuxer"
2400 w64_muxer_select="wav_muxer"
2401 wav_demuxer_select="riffdec"
2402 wav_muxer_select="riffenc"
2403 webm_muxer_select="riffenc"
2404 wtv_demuxer_select="riffdec"
2405 wtv_muxer_select="riffenc"
2406 xmv_demuxer_select="riffdec"
2407 xwma_demuxer_select="riffdec"
2408
2409 # indevs / outdevs
2410 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2411 alsa_outdev_deps="alsa_asoundlib_h"
2412 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2413 avfoundation_indev_select="avfoundation"
2414 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2415 caca_outdev_deps="libcaca"
2416 decklink_outdev_deps="decklink pthreads"
2417 decklink_outdev_extralibs="-lstdc++"
2418 dshow_indev_deps="IBaseFilter"
2419 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2420 dv1394_indev_deps="dv1394"
2421 dv1394_indev_select="dv_demuxer"
2422 fbdev_indev_deps="linux_fb_h"
2423 fbdev_outdev_deps="linux_fb_h"
2424 gdigrab_indev_deps="CreateDIBSection"
2425 gdigrab_indev_extralibs="-lgdi32"
2426 gdigrab_indev_select="bmp_decoder"
2427 iec61883_indev_deps="libiec61883"
2428 jack_indev_deps="jack_jack_h sem_timedwait"
2429 lavfi_indev_deps="avfilter"
2430 libcdio_indev_deps="libcdio"
2431 libdc1394_indev_deps="libdc1394"
2432 libv4l2_indev_deps="libv4l2"
2433 openal_indev_deps="openal"
2434 opengl_outdev_deps="opengl"
2435 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2436 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2437 pulse_indev_deps="libpulse"
2438 pulse_outdev_deps="libpulse"
2439 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2440 qtkit_indev_select="qtkit"
2441 sdl_outdev_deps="sdl"
2442 sndio_indev_deps="sndio_h"
2443 sndio_outdev_deps="sndio_h"
2444 v4l_indev_deps="linux_videodev_h"
2445 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2446 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2447 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2448 vfwcap_indev_extralibs="-lavicap32"
2449 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2450 xv_outdev_extralibs="-lXv -lX11 -lXext"
2451 x11grab_indev_deps="x11grab"
2452
2453 # protocols
2454 bluray_protocol_deps="libbluray"
2455 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2456 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2457 ffrtmpcrypt_protocol_select="tcp_protocol"
2458 ffrtmphttp_protocol_deps="!librtmp_protocol"
2459 ffrtmphttp_protocol_select="http_protocol"
2460 ftp_protocol_select="tcp_protocol"
2461 gopher_protocol_select="network"
2462 http_protocol_select="tcp_protocol"
2463 httpproxy_protocol_select="tcp_protocol"
2464 https_protocol_select="tls_protocol"
2465 librtmp_protocol_deps="librtmp"
2466 librtmpe_protocol_deps="librtmp"
2467 librtmps_protocol_deps="librtmp"
2468 librtmpt_protocol_deps="librtmp"
2469 librtmpte_protocol_deps="librtmp"
2470 libssh_protocol_deps="libssh"
2471 mmsh_protocol_select="http_protocol"
2472 mmst_protocol_select="network"
2473 rtmp_protocol_deps="!librtmp_protocol"
2474 rtmp_protocol_select="tcp_protocol"
2475 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2476 rtmps_protocol_deps="!librtmp_protocol"
2477 rtmps_protocol_select="tls_protocol"
2478 rtmpt_protocol_select="ffrtmphttp_protocol"
2479 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2480 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2481 rtp_protocol_select="udp_protocol"
2482 sctp_protocol_deps="struct_sctp_event_subscribe"
2483 sctp_protocol_select="network"
2484 srtp_protocol_select="rtp_protocol"
2485 tcp_protocol_select="network"
2486 tls_protocol_deps_any="openssl gnutls"
2487 tls_protocol_select="tcp_protocol"
2488 udp_protocol_select="network"
2489 unix_protocol_deps="sys_un_h"
2490 unix_protocol_select="network"
2491
2492 # filters
2493 aconvert_filter_deps="swresample"
2494 amovie_filter_deps="avcodec avformat"
2495 aresample_filter_deps="swresample"
2496 ass_filter_deps="libass"
2497 asyncts_filter_deps="avresample"
2498 atempo_filter_deps="avcodec"
2499 atempo_filter_select="rdft"
2500 azmq_filter_deps="libzmq"
2501 blackframe_filter_deps="gpl"
2502 boxblur_filter_deps="gpl"
2503 bs2b_filter_deps="libbs2b"
2504 colormatrix_filter_deps="gpl"
2505 cropdetect_filter_deps="gpl"
2506 dctdnoiz_filter_deps="avcodec"
2507 dctdnoiz_filter_select="dct"
2508 delogo_filter_deps="gpl"
2509 deshake_filter_deps="avcodec"
2510 deshake_filter_select="dsputil"
2511 drawtext_filter_deps="libfreetype"
2512 ebur128_filter_deps="gpl"
2513 flite_filter_deps="libflite"
2514 frei0r_filter_deps="frei0r dlopen"
2515 frei0r_filter_extralibs='$ldl'
2516 frei0r_src_filter_deps="frei0r dlopen"
2517 frei0r_src_filter_extralibs='$ldl'
2518 geq_filter_deps="gpl"
2519 histeq_filter_deps="gpl"
2520 hqdn3d_filter_deps="gpl"
2521 interlace_filter_deps="gpl"
2522 kerndeint_filter_deps="gpl"
2523 ladspa_filter_deps="ladspa dlopen"
2524 ladspa_filter_extralibs='$ldl'
2525 mcdeint_filter_deps="avcodec gpl"
2526 movie_filter_deps="avcodec avformat"
2527 mp_filter_deps="gpl avcodec swscale inline_asm"
2528 mpdecimate_filter_deps="gpl avcodec"
2529 mptestsrc_filter_deps="gpl"
2530 negate_filter_deps="lut_filter"
2531 perspective_filter_deps="gpl"
2532 ocv_filter_deps="libopencv"
2533 owdenoise_filter_deps="gpl"
2534 pan_filter_deps="swresample"
2535 phase_filter_deps="gpl"
2536 pp_filter_deps="gpl postproc"
2537 pullup_filter_deps="gpl"
2538 removelogo_filter_deps="avcodec avformat swscale"
2539 resample_filter_deps="avresample"
2540 sab_filter_deps="gpl swscale"
2541 scale_filter_deps="swscale"
2542 smartblur_filter_deps="gpl swscale"
2543 showspectrum_filter_deps="avcodec"
2544 showspectrum_filter_select="rdft"
2545 spp_filter_deps="gpl avcodec"
2546 spp_filter_select="dsputil fft idctdsp"
2547 stereo3d_filter_deps="gpl"
2548 subtitles_filter_deps="avformat avcodec libass"
2549 super2xsai_filter_deps="gpl"
2550 tinterlace_filter_deps="gpl"
2551 vidstabdetect_filter_deps="libvidstab"
2552 vidstabtransform_filter_deps="libvidstab"
2553 pixfmts_super2xsai_test_deps="super2xsai_filter"
2554 tinterlace_merge_test_deps="tinterlace_filter"
2555 tinterlace_pad_test_deps="tinterlace_filter"
2556 zmq_filter_deps="libzmq"
2557 zoompan_filter_deps="swscale"
2558
2559 # examples
2560 avio_reading="avformat avcodec avutil"
2561 avcodec_example_deps="avcodec avutil"
2562 demuxing_decoding_example_deps="avcodec avformat avutil"
2563 filter_audio_example_deps="avfilter avutil"
2564 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2565 filtering_video_example_deps="avfilter avcodec avformat avutil"
2566 metadata_example_deps="avformat avutil"
2567 muxing_example_deps="avcodec avformat avutil swscale"
2568 remuxing_example_deps="avcodec avformat avutil"
2569 resampling_audio_example_deps="avutil swresample"
2570 scaling_video_example_deps="avutil swscale"
2571 transcode_aac_example_deps="avcodec avformat swresample"
2572 transcoding_example_deps="avfilter avcodec avformat avutil"
2573
2574 # libraries, in linking order
2575 avcodec_deps="avutil"
2576 avdevice_deps="avformat avcodec avutil"
2577 avfilter_deps="avutil"
2578 avformat_deps="avcodec avutil"
2579 avresample_deps="avutil"
2580 postproc_deps="avutil gpl"
2581 swresample_deps="avutil"
2582 swscale_deps="avutil"
2583
2584 # programs
2585 ffmpeg_deps="avcodec avfilter avformat swresample"
2586 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2587                null_filter
2588                setpts_filter trim_filter"
2589 ffplay_deps="avcodec avformat swscale swresample sdl"
2590 ffplay_libs='$sdl_libs'
2591 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2592 ffprobe_deps="avcodec avformat"
2593 ffserver_deps="avformat fork sarestart"
2594 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2595
2596 # documentation
2597 podpages_deps="perl"
2598 manpages_deps="perl pod2man"
2599 htmlpages_deps="perl texi2html"
2600 txtpages_deps="perl makeinfo"
2601 doc_deps_any="manpages htmlpages podpages txtpages"
2602
2603 # default parameters
2604
2605 logfile="config.log"
2606
2607 # installation paths
2608 prefix_default="/usr/local"
2609 bindir_default='${prefix}/bin'
2610 datadir_default='${prefix}/share/ffmpeg'
2611 docdir_default='${prefix}/share/doc/ffmpeg'
2612 incdir_default='${prefix}/include'
2613 libdir_default='${prefix}/lib'
2614 mandir_default='${prefix}/share/man'
2615 shlibdir_default="$libdir_default"
2616
2617 # toolchain
2618 ar_default="ar"
2619 cc_default="gcc"
2620 cxx_default="g++"
2621 host_cc_default="gcc"
2622 cp_f="cp -f"
2623 doxygen_default="doxygen"
2624 install="install"
2625 ln_s="ln -s -f"
2626 nm_default="nm -g"
2627 objformat="elf"
2628 pkg_config_default=pkg-config
2629 ranlib_default="ranlib"
2630 strip_default="strip"
2631 yasmexe_default="yasm"
2632 windres_default="windres"
2633
2634 nogas=":"
2635
2636 # OS
2637 target_os_default=$(tolower $(uname -s))
2638 host_os=$target_os_default
2639
2640 # machine
2641 if test "$target_os_default" = aix; then
2642     arch_default=$(uname -p)
2643     strip_default="strip -X32_64"
2644 else
2645     arch_default=$(uname -m)
2646 fi
2647 cpu="generic"
2648
2649 # configurable options
2650 enable $PROGRAM_LIST
2651 enable $DOCUMENT_LIST
2652 enable $EXAMPLE_LIST
2653 enable $(filter_out avresample $LIBRARY_LIST)
2654 enable stripping
2655
2656 enable asm
2657 enable debug
2658 enable doc
2659 enable optimizations
2660 enable runtime_cpudetect
2661 enable safe_bitstream_reader
2662 enable static
2663 enable swscale_alpha
2664
2665 sws_max_filter_size_default=256
2666 set_default sws_max_filter_size
2667
2668 # Enable hwaccels by default.
2669 enable dxva2 vaapi vda vdpau xvmc
2670 enable xlib
2671
2672 # build settings
2673 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2674 LIBPREF="lib"
2675 LIBSUF=".a"
2676 FULLNAME='$(NAME)$(BUILDSUF)'
2677 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2678 SLIBPREF="lib"
2679 SLIBSUF=".so"
2680 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2681 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2682 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2683 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2684 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2685 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2686
2687 asflags_filter=echo
2688 cflags_filter=echo
2689 ldflags_filter=echo
2690
2691 AS_C='-c'
2692 AS_O='-o $@'
2693 CC_C='-c'
2694 CC_E='-E -o $@'
2695 CC_O='-o $@'
2696 CXX_C='-c'
2697 CXX_O='-o $@'
2698 LD_O='-o $@'
2699 LD_LIB='-l%'
2700 LD_PATH='-L'
2701 HOSTCC_C='-c'
2702 HOSTCC_E='-E -o $@'
2703 HOSTCC_O='-o $@'
2704 HOSTLD_O='-o $@'
2705
2706 host_libs='-lm'
2707 host_cflags_filter=echo
2708 host_ldflags_filter=echo
2709
2710 target_path='$(CURDIR)'
2711
2712 # since the object filename is not given with the -MM flag, the compiler
2713 # is only able to print the basename, and we must add the path ourselves
2714 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2715 DEPFLAGS='-MM'
2716
2717 # find source path
2718 if test -f configure; then
2719     source_path=.
2720 else
2721     source_path=$(cd $(dirname "$0"); pwd)
2722     echo "$source_path" | grep -q '[[:blank:]]' &&
2723         die "Out of tree builds are impossible with whitespace in source path."
2724     test -e "$source_path/config.h" &&
2725         die "Out of tree builds are impossible with config.h in source dir."
2726 fi
2727
2728 for v in "$@"; do
2729     r=${v#*=}
2730     l=${v%"$r"}
2731     r=$(sh_quote "$r")
2732     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2733 done
2734
2735 find_things(){
2736     thing=$1
2737     pattern=$2
2738     file=$source_path/$3
2739     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2740 }
2741
2742 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2743 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2744 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2745 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2746 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2747 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2748 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2749 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2750 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2751 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2752 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2753
2754 ALL_COMPONENTS="
2755     $BSF_LIST
2756     $DECODER_LIST
2757     $DEMUXER_LIST
2758     $ENCODER_LIST
2759     $FILTER_LIST
2760     $HWACCEL_LIST
2761     $INDEV_LIST
2762     $MUXER_LIST
2763     $OUTDEV_LIST
2764     $PARSER_LIST
2765     $PROTOCOL_LIST
2766 "
2767
2768 for n in $COMPONENT_LIST; do
2769     v=$(toupper ${n%s})_LIST
2770     eval enable \$$v
2771     eval ${n}_if_any="\$$v"
2772 done
2773
2774 enable $ARCH_EXT_LIST
2775
2776 die_unknown(){
2777     echo "Unknown option \"$1\"."
2778     echo "See $0 --help for available options."
2779     exit 1
2780 }
2781
2782 print_3_columns() {
2783     cat | tr ' ' '\n' | sort | pr -r -3 -t
2784 }
2785
2786 show_list() {
2787     suffix=_$1
2788     shift
2789     echo $* | sed s/$suffix//g | print_3_columns
2790     exit 0
2791 }
2792
2793 rand_list(){
2794     IFS=', '
2795     set -- $*
2796     unset IFS
2797     for thing; do
2798         comp=${thing%:*}
2799         prob=${thing#$comp}
2800         prob=${prob#:}
2801         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2802         echo "prob ${prob:-0.5}"
2803         printf '%s\n' $comp
2804     done
2805 }
2806
2807 do_random(){
2808     action=$1
2809     shift
2810     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2811     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2812 }
2813
2814 for opt do
2815     optval="${opt#*=}"
2816     case "$opt" in
2817         --extra-ldflags=*)
2818             add_ldflags $optval
2819         ;;
2820         --extra-libs=*)
2821             add_extralibs $optval
2822         ;;
2823         --disable-devices)
2824             disable $INDEV_LIST $OUTDEV_LIST
2825         ;;
2826         --enable-debug=*)
2827             debuglevel="$optval"
2828         ;;
2829         --disable-programs)
2830             disable $PROGRAM_LIST
2831         ;;
2832         --disable-everything)
2833             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2834         ;;
2835         --disable-all)
2836             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2837             disable $LIBRARY_LIST $PROGRAM_LIST doc
2838         ;;
2839         --enable-random|--disable-random)
2840             action=${opt%%-random}
2841             do_random ${action#--} $COMPONENT_LIST
2842         ;;
2843         --enable-random=*|--disable-random=*)
2844             action=${opt%%-random=*}
2845             do_random ${action#--} $optval
2846         ;;
2847         --enable-*=*|--disable-*=*)
2848             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2849             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2850             eval list=\$$(toupper $thing)_LIST
2851             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2852             list=$(filter "$name" $list)
2853             [ "$list" = "" ] && warn "Option $opt did not match anything"
2854             $action $list
2855         ;;
2856         --enable-?*|--disable-?*)
2857             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2858             if is_in $option $COMPONENT_LIST; then
2859                 test $action = disable && action=unset
2860                 eval $action \$$(toupper ${option%s})_LIST
2861             elif is_in $option $CMDLINE_SELECT; then
2862                 $action $option
2863             else
2864                 die_unknown $opt
2865             fi
2866         ;;
2867         --list-*)
2868             NAME="${opt#--list-}"
2869             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2870             NAME=${NAME%s}
2871             eval show_list $NAME \$$(toupper $NAME)_LIST
2872         ;;
2873         --help|-h) show_help
2874         ;;
2875         --fatal-warnings) enable fatal_warnings
2876         ;;
2877         *)
2878             optname="${opt%%=*}"
2879             optname="${optname#--}"
2880             optname=$(echo "$optname" | sed 's/-/_/g')
2881             if is_in $optname $CMDLINE_SET; then
2882                 eval $optname='$optval'
2883             elif is_in $optname $CMDLINE_APPEND; then
2884                 append $optname "$optval"
2885             else
2886                 die_unknown $opt
2887             fi
2888         ;;
2889     esac
2890 done
2891
2892 disabled logging && logfile=/dev/null
2893
2894 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2895 set >> $logfile
2896
2897 test -n "$cross_prefix" && enable cross_compile
2898
2899 if enabled cross_compile; then
2900     test -n "$arch" && test -n "$target_os" ||
2901         die "Must specify target arch and OS when cross-compiling"
2902 fi
2903
2904 ar_default="${cross_prefix}${ar_default}"
2905 cc_default="${cross_prefix}${cc_default}"
2906 cxx_default="${cross_prefix}${cxx_default}"
2907 nm_default="${cross_prefix}${nm_default}"
2908 pkg_config_default="${cross_prefix}${pkg_config_default}"
2909 ranlib_default="${cross_prefix}${ranlib_default}"
2910 strip_default="${cross_prefix}${strip_default}"
2911 windres_default="${cross_prefix}${windres_default}"
2912
2913 sysinclude_default="${sysroot}/usr/include"
2914
2915 test -n "$valgrind" && toolchain="valgrind-memcheck"
2916
2917 case "$toolchain" in
2918     clang-asan)
2919         cc_default="clang"
2920         add_cflags  -fsanitize=address
2921         add_ldflags -fsanitize=address
2922     ;;
2923     clang-tsan)
2924         cc_default="clang"
2925         add_cflags  -fsanitize=thread -pie
2926         add_ldflags -fsanitize=thread -pie
2927     ;;
2928     clang-usan)
2929         cc_default="clang"
2930         add_cflags  -fsanitize=undefined
2931         add_ldflags -fsanitize=undefined
2932     ;;
2933     gcc-asan)
2934         cc_default="gcc"
2935         add_cflags  -fsanitize=address
2936         add_ldflags -fsanitize=address
2937     ;;
2938     gcc-tsan)
2939         cc_default="gcc"
2940         add_cflags  -fsanitize=thread -pie -fPIC
2941         add_ldflags -fsanitize=thread -pie -fPIC
2942     ;;
2943     gcc-usan)
2944         cc_default="gcc"
2945         add_cflags  -fsanitize=undefined
2946         add_ldflags -fsanitize=undefined
2947     ;;
2948     valgrind-massif)
2949         target_exec_default=${valgrind:-"valgrind"}
2950         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"
2951     ;;
2952     valgrind-memcheck)
2953         target_exec_default=${valgrind:-"valgrind"}
2954         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2955     ;;
2956     msvc)
2957         # Check whether the current MSVC version needs the C99 converter.
2958         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2959         # support enough of C99 to build ffmpeg. Default to the new
2960         # behaviour if the regexp was unable to match anything, since this
2961         # successfully parses the version number of existing supported
2962         # versions that require the converter (MSVC 2010 and 2012).
2963         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2964         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2965             cc_default="cl"
2966         else
2967             cc_default="c99wrap cl"
2968         fi
2969         ld_default="link"
2970         nm_default="dumpbin -symbols"
2971         ar_default="lib"
2972         target_os_default="win32"
2973         # Use a relative path for TMPDIR. This makes sure all the
2974         # ffconf temp files are written with a relative path, avoiding
2975         # issues with msys/win32 path conversion for MSVC parameters
2976         # such as -Fo<file> or -out:<file>.
2977         TMPDIR=.
2978     ;;
2979     icl)
2980         cc_default="icl"
2981         ld_default="xilink"
2982         nm_default="dumpbin -symbols"
2983         ar_default="xilib"
2984         target_os_default="win32"
2985         TMPDIR=.
2986     ;;
2987     gcov)
2988         add_cflags  -fprofile-arcs -ftest-coverage
2989         add_ldflags -fprofile-arcs -ftest-coverage
2990     ;;
2991     hardened)
2992         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2993         add_ldflags -Wl,-z,relro -Wl,-z,now
2994     ;;
2995     ?*)
2996         die "Unknown toolchain $toolchain"
2997     ;;
2998 esac
2999
3000 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3001     target_exec target_os yasmexe
3002 enabled cross_compile || host_cc_default=$cc
3003 set_default host_cc
3004
3005 if ! $pkg_config --version >/dev/null 2>&1; then
3006     warn "$pkg_config not found, library detection may fail."
3007     pkg_config=false
3008 fi
3009
3010 if test $doxygen != $doxygen_default && \
3011   ! $doxygen --version >/dev/null 2>&1; then
3012     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3013 fi
3014
3015 exesuf() {
3016     case $1 in
3017         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3018     esac
3019 }
3020
3021 EXESUF=$(exesuf $target_os)
3022 HOSTEXESUF=$(exesuf $host_os)
3023
3024 # set temporary file name
3025 : ${TMPDIR:=$TEMPDIR}
3026 : ${TMPDIR:=$TMP}
3027 : ${TMPDIR:=/tmp}
3028
3029 if [ -n "$tempprefix" ] ; then
3030     mktemp(){
3031         echo $tempprefix.${HOSTNAME}.${UID}
3032     }
3033 elif ! check_cmd mktemp -u XXXXXX; then
3034     # simple replacement for missing mktemp
3035     # NOT SAFE FOR GENERAL USE
3036     mktemp(){
3037         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3038     }
3039 fi
3040
3041 tmpfile(){
3042     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3043         (set -C; exec > $tmp) 2>/dev/null ||
3044         die "Unable to create temporary file in $TMPDIR."
3045     append TMPFILES $tmp
3046     eval $1=$tmp
3047 }
3048
3049 trap 'rm -f -- $TMPFILES' EXIT
3050
3051 tmpfile TMPASM .asm
3052 tmpfile TMPC   .c
3053 tmpfile TMPCPP .cpp
3054 tmpfile TMPE   $EXESUF
3055 tmpfile TMPH   .h
3056 tmpfile TMPM   .m
3057 tmpfile TMPO   .o
3058 tmpfile TMPS   .S
3059 tmpfile TMPSH  .sh
3060 tmpfile TMPV   .ver
3061
3062 unset -f mktemp
3063
3064 chmod +x $TMPE
3065
3066 # make sure we can execute files in $TMPDIR
3067 cat > $TMPSH 2>> $logfile <<EOF
3068 #! /bin/sh
3069 EOF
3070 chmod +x $TMPSH >> $logfile 2>&1
3071 if ! $TMPSH >> $logfile 2>&1; then
3072     cat <<EOF
3073 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3074 variable to another directory and make sure that it is not mounted noexec.
3075 EOF
3076     die "Sanity test failed."
3077 fi
3078
3079 ccc_flags(){
3080     for flag; do
3081         case $flag in
3082             -std=c99)           echo -c99                       ;;
3083             -mcpu=*)            echo -arch ${flag#*=}           ;;
3084             -mieee)             echo -ieee                      ;;
3085             -O*|-fast)          echo $flag                      ;;
3086             -fno-math-errno)    echo -assume nomath_errno       ;;
3087             -g)                 echo -g3                        ;;
3088             -Wall)              echo -msg_enable level2         ;;
3089             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3090             -Wl,*)              echo $flag                      ;;
3091             -f*|-W*)                                            ;;
3092             *)                  echo $flag                      ;;
3093         esac
3094    done
3095 }
3096
3097 cparser_flags(){
3098     for flag; do
3099         case $flag in
3100             -Wno-switch)             echo -Wno-switch-enum ;;
3101             -Wno-format-zero-length) ;;
3102             -Wdisabled-optimization) ;;
3103             -Wno-pointer-sign)       echo -Wno-other ;;
3104             *)                       echo $flag ;;
3105         esac
3106     done
3107 }
3108
3109 msvc_common_flags(){
3110     for flag; do
3111         case $flag in
3112             # In addition to specifying certain flags under the compiler
3113             # specific filters, they must be specified here as well or else the
3114             # generic catch all at the bottom will print the original flag.
3115             -Wall)                ;;
3116             -std=c99)             ;;
3117             # Common flags
3118             -fomit-frame-pointer) ;;
3119             -g)                   echo -Z7 ;;
3120             -fno-math-errno)      ;;
3121             -fno-common)          ;;
3122             -fno-signed-zeros)    ;;
3123             -fPIC)                ;;
3124             -mthumb)              ;;
3125             -march=*)             ;;
3126             -lz)                  echo zlib.lib ;;
3127             -lavifil32)           echo vfw32.lib ;;
3128             -lavicap32)           echo vfw32.lib user32.lib ;;
3129             -l*)                  echo ${flag#-l}.lib ;;
3130             *)                    echo $flag ;;
3131         esac
3132     done
3133 }
3134
3135 msvc_flags(){
3136     msvc_common_flags "$@"
3137     for flag; do
3138         case $flag in
3139             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3140                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3141                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3142                                        -wd4554 \
3143                                        -wd4273 ;;
3144         esac
3145     done
3146 }
3147
3148 icl_flags(){
3149     msvc_common_flags "$@"
3150     for flag; do
3151         case $flag in
3152             # Despite what Intel's documentation says -Wall, which is supported
3153             # on Windows, does enable remarks so disable them here.
3154             -Wall)                echo $flag -Qdiag-disable:remark ;;
3155             -std=c99)             echo -Qstd=c99 ;;
3156             -flto)                echo -ipo ;;
3157         esac
3158     done
3159 }
3160
3161 icc_flags(){
3162     for flag; do
3163         case $flag in
3164             -flto)                echo -ipo ;;
3165             *)                    echo $flag ;;
3166         esac
3167     done
3168 }
3169
3170 pgi_flags(){
3171     for flag; do
3172         case $flag in
3173             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3174             -fomit-frame-pointer) echo -Mnoframe ;;
3175             -g)                   echo -gopt ;;
3176             *)                    echo $flag ;;
3177         esac
3178     done
3179 }
3180
3181 suncc_flags(){
3182     for flag; do
3183         case $flag in
3184             -march=*|-mcpu=*)
3185                 case "${flag#*=}" in
3186                     native)                   echo -xtarget=native       ;;
3187                     v9|niagara)               echo -xarch=sparc          ;;
3188                     ultrasparc)               echo -xarch=sparcvis       ;;
3189                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3190                     i586|pentium)             echo -xchip=pentium        ;;
3191                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3192                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3193                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3194                     pentium4*)          echo -xtarget=pentium4           ;;
3195                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3196                     *-sse3)             echo -xarch=sse3                 ;;
3197                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3198                     bonnell)                   echo -xarch=ssse3         ;;
3199                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3200                     westmere)                  echo -xtarget=westmere    ;;
3201                     silvermont)                echo -xarch=sse4_2        ;;
3202                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3203                     core-avx*|ivybridge|haswell|broadwell)
3204                                                echo -xarch=avx           ;;
3205                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3206                     btver1)                    echo -xarch=amdsse4a      ;;
3207                     btver2|bdver*)             echo -xarch=avx           ;;
3208                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3209                     k8|opteron|athlon64|athlon-fx)
3210                                                echo -xarch=sse2a         ;;
3211                     athlon*)                   echo -xarch=pentium_proa  ;;
3212                 esac
3213                 ;;
3214             -std=c99)             echo -xc99              ;;
3215             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3216             -fPIC)                echo -KPIC -xcode=pic32 ;;
3217             -W*,*)                echo $flag              ;;
3218             -f*-*|-W*|-mimpure-text)                      ;;
3219             -shared)              echo -G                 ;;
3220             *)                    echo $flag              ;;
3221         esac
3222     done
3223 }
3224
3225 tms470_flags(){
3226     for flag; do
3227         case $flag in
3228             -march=*|-mcpu=*)
3229                 case "${flag#*=}" in
3230                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3231                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3232                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3233                     armv6*|arm11*)          echo -mv=6   ;;
3234                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3235                                             echo -mv=5e  ;;
3236                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3237                 esac
3238                 ;;
3239             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3240             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3241             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3242             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3243             -msoft-float)   echo --float_support=vfplib       ;;
3244             -O[0-3]|-mf=*)  echo $flag                        ;;
3245             -g)             echo -g -mn                       ;;
3246             -pds=*)         echo $flag                        ;;
3247             -D*|-I*)        echo $flag                        ;;
3248             --gcc|--abi=*)  echo $flag                        ;;
3249             -me)            echo $flag                        ;;
3250         esac
3251     done
3252 }
3253
3254 probe_cc(){
3255     pfx=$1
3256     _cc=$2
3257
3258     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3259     unset _ld_o _ldflags _ld_lib _ld_path
3260     unset _depflags _DEPCMD _DEPFLAGS
3261     _flags_filter=echo
3262
3263     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3264         true # no-op to avoid reading stdin in following checks
3265     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3266         _type=llvm_gcc
3267         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3268         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3269         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3270         _cflags_speed='-O3'
3271         _cflags_size='-Os'
3272     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3273         _type=gcc
3274         gcc_version=$($_cc --version | head -n1)
3275         gcc_basever=$($_cc -dumpversion)
3276         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3277         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3278         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3279         if ! $_cc -dumpversion | grep -q '^2\.'; then
3280             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3281         fi
3282         _cflags_speed='-O3'
3283         _cflags_size='-Os'
3284     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3285         _type=icc
3286         _ident=$($_cc --version | head -n1)
3287         _depflags='-MMD'
3288         _cflags_speed='-O3'
3289         _cflags_size='-Os'
3290         _cflags_noopt='-O1'
3291         _flags_filter=icc_flags
3292     elif $_cc -v 2>&1 | grep -q xlc; then
3293         _type=xlc
3294         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3295         _cflags_speed='-O5'
3296         _cflags_size='-O5 -qcompact'
3297     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3298         _type=ccc
3299         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3300         _DEPFLAGS='-M'
3301         _cflags_speed='-fast'
3302         _cflags_size='-O1'
3303         _flags_filter=ccc_flags
3304     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3305         test -d "$sysroot" || die "No valid sysroot specified."
3306         _type=armcc
3307         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
3308         armcc_conf="$PWD/armcc.conf"
3309         $_cc --arm_linux_configure                 \
3310              --arm_linux_config_file="$armcc_conf" \
3311              --configure_sysroot="$sysroot"        \
3312              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3313              die "Error creating armcc configuration file."
3314         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3315         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3316         as_default="${cross_prefix}gcc"
3317         _depflags='-MMD'
3318         _cflags_speed='-O3'
3319         _cflags_size='-Os'
3320     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3321         _type=tms470
3322         _ident=$($_cc -version | head -n1 | tr -s ' ')
3323         _flags='--gcc --abi=eabi -me'
3324         _cc_e='-ppl -fe=$@'
3325         _cc_o='-fe=$@'
3326         _depflags='-ppa -ppd=$(@:.o=.d)'
3327         _cflags_speed='-O3 -mf=5'
3328         _cflags_size='-O3 -mf=2'
3329         _flags_filter=tms470_flags
3330     elif $_cc -v 2>&1 | grep -q clang; then
3331         _type=clang
3332         _ident=$($_cc --version | head -n1)
3333         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3334         _cflags_speed='-O3'
3335         _cflags_size='-Os'
3336     elif $_cc -V 2>&1 | grep -q Sun; then
3337         _type=suncc
3338         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3339         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3340         _DEPFLAGS='-xM1 -xc99'
3341         _ldflags='-std=c99'
3342         _cflags_speed='-O5'
3343         _cflags_size='-O5 -xspace'
3344         _flags_filter=suncc_flags
3345     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3346         _type=pathscale
3347         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3348         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3349         _cflags_speed='-O2'
3350         _cflags_size='-Os'
3351         _flags_filter='filter_out -Wdisabled-optimization'
3352     elif $_cc -v 2>&1 | grep -q Open64; then
3353         _type=open64
3354         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3355         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3356         _cflags_speed='-O2'
3357         _cflags_size='-Os'
3358         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3359     elif $_cc -V 2>&1 | grep -q Portland; then
3360         _type=pgi
3361         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3362         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3363         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3364         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3365         _cflags_noopt="-O"
3366         _flags_filter=pgi_flags
3367     elif $_cc 2>&1 | grep -q Microsoft; then
3368         _type=msvc
3369         _ident=$($cc 2>&1 | head -n1)
3370         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3371         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3372         _cflags_speed="-O2"
3373         _cflags_size="-O1"
3374         if $_cc 2>&1 | grep -q Linker; then
3375             _ld_o='-out:$@'
3376         else
3377             _ld_o='-Fe$@'
3378         fi
3379         _cc_o='-Fo$@'
3380         _cc_e='-P -Fi$@'
3381         _flags_filter=msvc_flags
3382         _ld_lib='lib%.a'
3383         _ld_path='-libpath:'
3384         _flags='-nologo'
3385         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3386         if [ $pfx = hostcc ]; then
3387             append _cflags -Dsnprintf=_snprintf
3388         fi
3389         disable stripping
3390     elif $_cc 2>&1 | grep -q Intel; then
3391         _type=icl
3392         _ident=$($cc 2>&1 | head -n1)
3393         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3394         # Not only is O3 broken on 13.x+ but it is slower on all previous
3395         # versions (tested) as well.
3396         _cflags_speed="-O2"
3397         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3398         if $_cc 2>&1 | grep -q Linker; then
3399             _ld_o='-out:$@'
3400         else
3401             _ld_o='-Fe$@'
3402         fi
3403         _cc_o='-Fo$@'
3404         _cc_e='-P'
3405         _flags_filter=icl_flags
3406         _ld_lib='lib%.a'
3407         _ld_path='-libpath:'
3408         # -Qdiag-error to make icl error when seeing certain unknown arguments
3409         _flags='-nologo -Qdiag-error:4044,10157'
3410         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3411         # with MSVC which enables it by default.
3412         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3413         if [ $pfx = hostcc ]; then
3414             append _cflags -Dsnprintf=_snprintf
3415         fi
3416     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3417         _type=cparser
3418         _ident=$($_cc --version | head -n1)
3419         _depflags='-MMD'
3420         _cflags_speed='-O4'
3421         _cflags_size='-O2'
3422         _flags_filter=cparser_flags
3423     fi
3424
3425     eval ${pfx}_type=\$_type
3426     eval ${pfx}_ident=\$_ident
3427 }
3428
3429 set_ccvars(){
3430     eval ${1}_C=\${_cc_c-\${${1}_C}}
3431     eval ${1}_E=\${_cc_e-\${${1}_E}}
3432     eval ${1}_O=\${_cc_o-\${${1}_O}}
3433
3434     if [ -n "$_depflags" ]; then
3435         eval ${1}_DEPFLAGS=\$_depflags
3436     else
3437         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3438         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3439         eval DEP${1}FLAGS=\$_flags
3440     fi
3441 }
3442
3443 probe_cc cc "$cc"
3444 cflags_filter=$_flags_filter
3445 cflags_speed=$_cflags_speed
3446 cflags_size=$_cflags_size
3447 cflags_noopt=$_cflags_noopt
3448 add_cflags $_flags $_cflags
3449 cc_ldflags=$_ldflags
3450 set_ccvars CC
3451
3452 probe_cc hostcc "$host_cc"
3453 host_cflags_filter=$_flags_filter
3454 add_host_cflags  $_flags $_cflags
3455 set_ccvars HOSTCC
3456
3457 test -n "$cc_type" && enable $cc_type ||
3458     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3459
3460 : ${as_default:=$cc}
3461 : ${dep_cc_default:=$cc}
3462 : ${ld_default:=$cc}
3463 : ${host_ld_default:=$host_cc}
3464 set_default ar as dep_cc ld host_ld windres
3465
3466 probe_cc as "$as"
3467 asflags_filter=$_flags_filter
3468 add_asflags $_flags $_cflags
3469 set_ccvars AS
3470
3471 probe_cc ld "$ld"
3472 ldflags_filter=$_flags_filter
3473 add_ldflags $_flags $_ldflags
3474 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3475 LD_O=${_ld_o-$LD_O}
3476 LD_LIB=${_ld_lib-$LD_LIB}
3477 LD_PATH=${_ld_path-$LD_PATH}
3478
3479 probe_cc hostld "$host_ld"
3480 host_ldflags_filter=$_flags_filter
3481 add_host_ldflags $_flags $_ldflags
3482 HOSTLD_O=${_ld_o-$HOSTLD_O}
3483
3484 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3485     probe_cc depcc "$dep_cc"
3486     CCDEP=${_DEPCMD:-$DEPCMD}
3487     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3488     DEPCCFLAGS=$_flags
3489 fi
3490
3491 if $ar 2>&1 | grep -q Microsoft; then
3492     arflags="-nologo"
3493     ar_o='-out:$@'
3494 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3495     arflags="rq"
3496     ar_o='$@'
3497 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3498     arflags='-Xany -r -c'
3499     ar_o='$@'
3500 else
3501     arflags="rc"
3502     ar_o='$@'
3503 fi
3504
3505 add_cflags $extra_cflags
3506 add_cxxflags $extra_cxxflags
3507 add_asflags $extra_cflags
3508
3509 if test -n "$sysroot"; then
3510     case "$cc_type" in
3511         gcc|llvm_gcc|clang)
3512             add_cppflags --sysroot="$sysroot"
3513             add_ldflags --sysroot="$sysroot"
3514 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3515             add_cppflags -isysroot "$sysroot"
3516             add_ldflags -isysroot "$sysroot"
3517         ;;
3518         tms470)
3519             add_cppflags -I"$sysinclude"
3520             add_ldflags  --sysroot="$sysroot"
3521         ;;
3522     esac
3523 fi
3524
3525 if test "$cpu" = host; then
3526     enabled cross_compile &&
3527         die "--cpu=host makes no sense when cross-compiling."
3528
3529     case "$cc_type" in
3530         gcc|llvm_gcc)
3531             check_native(){
3532                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3533                 sed -n "/cc1.*$1=/{
3534                             s/.*$1=\\([^ ]*\\).*/\\1/
3535                             p
3536                             q
3537                         }" $TMPE
3538             }
3539             cpu=$(check_native -march || check_native -mcpu)
3540         ;;
3541     esac
3542
3543     test "${cpu:-host}" = host &&
3544         die "--cpu=host not supported with compiler $cc"
3545 fi
3546
3547 # Deal with common $arch aliases
3548 case "$arch" in
3549     aarch64|arm64)
3550         arch="aarch64"
3551     ;;
3552     arm*|iPad*|iPhone*)
3553         arch="arm"
3554     ;;
3555     mips*|IP*)
3556         arch="mips"
3557     ;;
3558     parisc*|hppa*)
3559         arch="parisc"
3560     ;;
3561     "Power Macintosh"|ppc*|powerpc*)
3562         arch="ppc"
3563     ;;
3564     s390|s390x)
3565         arch="s390"
3566     ;;
3567     sh4|sh)
3568         arch="sh4"
3569     ;;
3570     sun4u|sparc*)
3571         arch="sparc"
3572     ;;
3573     tilegx|tile-gx)
3574         arch="tilegx"
3575     ;;
3576     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3577         arch="x86"
3578     ;;
3579 esac
3580
3581 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3582 enable $arch
3583
3584 # Add processor-specific flags
3585 if enabled aarch64; then
3586
3587     case $cpu in
3588         armv*)
3589             cpuflags="-march=$cpu"
3590         ;;
3591         *)
3592             cpuflags="-mcpu=$cpu"
3593         ;;
3594     esac
3595
3596 elif enabled alpha; then
3597
3598     cpuflags="-mcpu=$cpu"
3599
3600 elif enabled arm; then
3601
3602     check_arm_arch() {
3603         check_cpp_condition stddef.h \
3604             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3605             $cpuflags
3606     }
3607
3608     probe_arm_arch() {
3609         if   check_arm_arch 4;        then echo armv4;
3610         elif check_arm_arch 4T;       then echo armv4t;
3611         elif check_arm_arch 5;        then echo armv5;
3612         elif check_arm_arch 5E;       then echo armv5e;
3613         elif check_arm_arch 5T;       then echo armv5t;
3614         elif check_arm_arch 5TE;      then echo armv5te;
3615         elif check_arm_arch 5TEJ;     then echo armv5te;
3616         elif check_arm_arch 6;        then echo armv6;
3617         elif check_arm_arch 6J;       then echo armv6j;
3618         elif check_arm_arch 6K;       then echo armv6k;
3619         elif check_arm_arch 6Z;       then echo armv6z;
3620         elif check_arm_arch 6ZK;      then echo armv6zk;
3621         elif check_arm_arch 6T2;      then echo armv6t2;
3622         elif check_arm_arch 7;        then echo armv7;
3623         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3624         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3625         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3626         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3627         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3628         fi
3629     }
3630
3631     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3632
3633     case $cpu in
3634         armv*)
3635             cpuflags="-march=$cpu"
3636             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3637         ;;
3638         *)
3639             cpuflags="-mcpu=$cpu"
3640             case $cpu in
3641                 cortex-a*)                               subarch=armv7a  ;;
3642                 cortex-r*)                               subarch=armv7r  ;;
3643                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3644                 arm11*)                                  subarch=armv6   ;;
3645                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3646                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3647                 *)                             subarch=$(probe_arm_arch) ;;
3648             esac
3649         ;;
3650     esac
3651
3652     case "$subarch" in
3653         armv5t*)    enable fast_clz                ;;
3654         armv[6-8]*)
3655             enable fast_clz
3656             disabled fast_unaligned || enable fast_unaligned
3657             ;;
3658     esac
3659
3660 elif enabled avr32; then
3661
3662     case $cpu in
3663         ap7[02]0[0-2])
3664             subarch="avr32_ap"
3665             cpuflags="-mpart=$cpu"
3666         ;;
3667         ap)
3668             subarch="avr32_ap"
3669             cpuflags="-march=$cpu"
3670         ;;
3671         uc3[ab]*)
3672             subarch="avr32_uc"
3673             cpuflags="-mcpu=$cpu"
3674         ;;
3675         uc)
3676             subarch="avr32_uc"
3677             cpuflags="-march=$cpu"
3678         ;;
3679     esac
3680
3681 elif enabled bfin; then
3682
3683     cpuflags="-mcpu=$cpu"
3684
3685 elif enabled mips; then
3686
3687     cpuflags="-march=$cpu"
3688
3689     case $cpu in
3690         24kc)
3691             disable mipsfpu
3692             disable mipsdspr1
3693             disable mipsdspr2
3694         ;;
3695         24kf*)
3696             disable mipsdspr1
3697             disable mipsdspr2
3698         ;;
3699         24kec|34kc|1004kc)
3700             disable mipsfpu
3701             disable mipsdspr2
3702         ;;
3703         24kef*|34kf*|1004kf*)
3704             disable mipsdspr2
3705         ;;
3706         74kc)
3707             disable mipsfpu
3708         ;;
3709     esac
3710
3711 elif enabled ppc; then
3712
3713     disable ldbrx
3714     disable vsx
3715
3716     case $(tolower $cpu) in
3717         601|ppc601|powerpc601)
3718             cpuflags="-mcpu=601"
3719             disable altivec
3720         ;;
3721         603*|ppc603*|powerpc603*)
3722             cpuflags="-mcpu=603"
3723             disable altivec
3724         ;;
3725         604*|ppc604*|powerpc604*)
3726             cpuflags="-mcpu=604"
3727             disable altivec
3728         ;;
3729         g3|75*|ppc75*|powerpc75*)
3730             cpuflags="-mcpu=750"
3731             disable altivec
3732         ;;
3733         g4|745*|ppc745*|powerpc745*)
3734             cpuflags="-mcpu=7450"
3735         ;;
3736         74*|ppc74*|powerpc74*)
3737             cpuflags="-mcpu=7400"
3738         ;;
3739         g5|970|ppc970|powerpc970)
3740             cpuflags="-mcpu=970"
3741         ;;
3742         power[3-8]*)
3743             cpuflags="-mcpu=$cpu"
3744         ;;
3745         cell)
3746             cpuflags="-mcpu=cell"
3747             enable ldbrx
3748         ;;
3749         e500mc)
3750             cpuflags="-mcpu=e500mc"
3751             disable altivec
3752         ;;
3753         e500v2)
3754             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3755             disable altivec
3756             disable dcbzl
3757         ;;
3758         e500)
3759             cpuflags="-mcpu=8540 -mhard-float"
3760             disable altivec
3761             disable dcbzl
3762         ;;
3763     esac
3764
3765 elif enabled sparc; then
3766
3767     case $cpu in
3768         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3769             cpuflags="-mcpu=$cpu"
3770         ;;
3771         ultrasparc*|niagara[234])
3772             cpuflags="-mcpu=$cpu"
3773         ;;
3774     esac
3775
3776 elif enabled x86; then
3777
3778     case $cpu in
3779         i[345]86|pentium)
3780             cpuflags="-march=$cpu"
3781             disable mmx
3782         ;;
3783         # targets that do NOT support nopl and conditional mov (cmov)
3784         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3785             cpuflags="-march=$cpu"
3786             disable i686
3787         ;;
3788         # targets that do support nopl and conditional mov (cmov)
3789         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3790         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3791             cpuflags="-march=$cpu"
3792             enable i686
3793             enable fast_cmov
3794         ;;
3795         # targets that do support conditional mov but on which it's slow
3796         pentium4|pentium4m|prescott|nocona)
3797             cpuflags="-march=$cpu"
3798             enable i686
3799             disable fast_cmov
3800         ;;
3801     esac
3802
3803 fi
3804
3805 if [ "$cpu" != generic ]; then
3806     add_cflags  $cpuflags
3807     add_asflags $cpuflags
3808 fi
3809
3810 # compiler sanity check
3811 check_exec <<EOF
3812 int main(void){ return 0; }
3813 EOF
3814 if test "$?" != 0; then
3815     echo "$cc is unable to create an executable file."
3816     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3817         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3818         echo "Only do this if you know what cross compiling means."
3819     fi
3820     die "C compiler test failed."
3821 fi
3822
3823 add_cppflags -D_ISOC99_SOURCE
3824 add_cxxflags -D__STDC_CONSTANT_MACROS
3825 check_cflags -std=c99
3826 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3827 #include <stdlib.h>
3828 EOF
3829 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3830 #include <stdlib.h>
3831 EOF
3832
3833 add_host_cppflags -D_ISOC99_SOURCE
3834 check_host_cflags -std=c99
3835 check_host_cflags -Wall
3836 check_host_cflags -O3
3837
3838 check_64bit(){
3839     arch32=$1
3840     arch64=$2
3841     expr=$3
3842     check_code cc "" "int test[2*($expr) - 1]" &&
3843         subarch=$arch64 || subarch=$arch32
3844 }
3845
3846 case "$arch" in
3847     aarch64|alpha|ia64)
3848         spic=$shared
3849     ;;
3850     mips)
3851         check_64bit mips mips64 '_MIPS_SIM > 1'
3852         spic=$shared
3853     ;;
3854     parisc)
3855         check_64bit parisc parisc64 'sizeof(void *) > 4'
3856         spic=$shared
3857     ;;
3858     ppc)
3859         check_64bit ppc ppc64 'sizeof(void *) > 4'
3860         spic=$shared
3861     ;;
3862     s390)
3863         check_64bit s390 s390x 'sizeof(void *) > 4'
3864         spic=$shared
3865     ;;
3866     sparc)
3867         check_64bit sparc sparc64 'sizeof(void *) > 4'
3868         spic=$shared
3869     ;;
3870     x86)
3871         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3872         if test "$subarch" = "x86_64"; then
3873             spic=$shared
3874         fi
3875     ;;
3876     ppc)
3877         check_cc <<EOF && subarch="ppc64"
3878         int test[(int)sizeof(char*) - 7];
3879 EOF
3880     ;;
3881 esac
3882
3883 enable $subarch
3884 enabled spic && enable_weak pic
3885
3886 # OS specific
3887 case $target_os in
3888     aix)
3889         SHFLAGS=-shared
3890         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3891         enabled shared && add_ldflags -Wl,-brtl
3892         ;;
3893     android)
3894         disable symver
3895         SLIB_INSTALL_NAME='$(SLIBNAME)'
3896         SLIB_INSTALL_LINKS=
3897         # soname not set on purpose
3898         SHFLAGS=-shared
3899         ;;
3900     haiku)
3901         prefix_default="/boot/common"
3902         network_extralibs="-lnetwork"
3903         host_libs=
3904         ;;
3905     sunos)
3906         SHFLAGS='-shared -Wl,-h,$$(@F)'
3907         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3908         network_extralibs="-lsocket -lnsl"
3909         # When using suncc to build, the Solaris linker will mark
3910         # an executable with each instruction set encountered by
3911         # the Solaris assembler.  As our libraries contain their own
3912         # guards for processor-specific code, instead suppress
3913         # generation of the HWCAPS ELF section on Solaris x86 only.
3914         enabled_all suncc x86 &&
3915             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3916             add_ldflags -Wl,-M,mapfile
3917         nm_default='nm -P -g'
3918         ;;
3919     netbsd)
3920         disable symver
3921         oss_indev_extralibs="-lossaudio"
3922         oss_outdev_extralibs="-lossaudio"
3923         enabled gcc || check_ldflags -Wl,-zmuldefs
3924         ;;
3925     openbsd|bitrig)
3926         disable symver
3927         SHFLAGS='-shared'
3928         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3929         SLIB_INSTALL_LINKS=
3930         oss_indev_extralibs="-lossaudio"
3931         oss_outdev_extralibs="-lossaudio"
3932         ;;
3933     dragonfly)
3934         disable symver
3935         ;;
3936     freebsd)
3937         ;;
3938     bsd/os)
3939         add_extralibs -lpoll -lgnugetopt
3940         strip="strip -d"
3941         ;;
3942     darwin)
3943         test "${as#*gas-preprocessor.pl}" != "$as" || gas="${gas:=gas-preprocessor.pl} ${as:=$cc}"
3944         enabled ppc && add_asflags -force_cpusubtype_ALL
3945         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3946         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3947         strip="${strip} -x"
3948         add_ldflags -Wl,-dynamic,-search_paths_first
3949         SLIBSUF=".dylib"
3950         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3951         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3952         objformat="macho"
3953         enabled x86_64 && objformat="macho64"
3954         enabled_any pic shared ||
3955             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3956         ;;
3957     mingw32*)
3958         if test $target_os = "mingw32ce"; then
3959             disable network
3960         else
3961             target_os=mingw32
3962         fi
3963         LIBTARGET=i386
3964         if enabled x86_64; then
3965             LIBTARGET="i386:x86-64"
3966         elif enabled arm; then
3967             LIBTARGET=arm-wince
3968         fi
3969         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3970         check_ldflags -Wl,--nxcompat
3971         check_ldflags -Wl,--dynamicbase
3972         shlibdir_default="$bindir_default"
3973         SLIBPREF=""
3974         SLIBSUF=".dll"
3975         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3976         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3977         dlltool="${cross_prefix}dlltool"
3978         if check_cmd lib.exe -list; then
3979             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3980             if enabled x86_64; then
3981                 LIBTARGET=x64
3982             fi
3983         elif check_cmd $dlltool --version; then
3984             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3985         fi
3986         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3987         SLIB_INSTALL_LINKS=
3988         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3989         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3990         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3991         objformat="win32"
3992         ranlib=:
3993         enable dos_paths
3994         ;;
3995     win32|win64)
3996         disable symver
3997         if enabled shared; then
3998             # Link to the import library instead of the normal static library
3999             # for shared libs.
4000             LD_LIB='%.lib'
4001             # Cannot build both shared and static libs with MSVC or icl.
4002             disable static
4003         fi
4004         shlibdir_default="$bindir_default"
4005         SLIBPREF=""
4006         SLIBSUF=".dll"
4007         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4008         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4009         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4010         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4011         SLIB_INSTALL_LINKS=
4012         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4013         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4014         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4015         objformat="win32"
4016         ranlib=:
4017         enable dos_paths
4018         ;;
4019     cygwin*)
4020         target_os=cygwin
4021         shlibdir_default="$bindir_default"
4022         SLIBPREF="cyg"
4023         SLIBSUF=".dll"
4024         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4025         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4026         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4027         SLIB_INSTALL_LINKS=
4028         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4029         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4030         objformat="win32"
4031         enable dos_paths
4032         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4033         ;;
4034     *-dos|freedos|opendos)
4035         network_extralibs="-lsocket"
4036         objformat="coff"
4037         enable dos_paths
4038         add_cppflags -U__STRICT_ANSI__
4039         ;;
4040     linux)
4041         enable dv1394
4042         ;;
4043     irix*)
4044         target_os=irix
4045         ranlib="echo ignoring ranlib"
4046         ;;
4047     os/2*)
4048         strip="lxlite -CS"
4049         ln_s="cp -f"
4050         objformat="aout"
4051         add_cppflags -D_GNU_SOURCE
4052         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4053         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4054         LIBSUF="_s.a"
4055         SLIBPREF=""
4056         SLIBSUF=".dll"
4057         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4058         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4059         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4060             echo PROTMODE >> $(SUBDIR)$(NAME).def; \