avdevice/lavfi: add io.h, should fix msvc build
[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     fdctdsp
1806     frame_thread_encoder
1807     gcrypt
1808     golomb
1809     gplv3
1810     h263dsp
1811     h264chroma
1812     h264dsp
1813     h264pred
1814     h264qpel
1815     hpeldsp
1816     huffman
1817     huffyuvdsp
1818     huffyuvencdsp
1819     idctdsp
1820     intrax8
1821     lgplv3
1822     llauddsp
1823     llviddsp
1824     lpc
1825     mpeg_er
1826     mpegaudio
1827     mpegaudiodsp
1828     mpegvideo
1829     mpegvideoenc
1830     nettle
1831     qpeldsp
1832     rangecoder
1833     riffdec
1834     riffenc
1835     rtpdec
1836     rtpenc_chain
1837     sinewin
1838     tpeldsp
1839     videodsp
1840     vp3dsp
1841 "
1842
1843 CMDLINE_SELECT="
1844     $ARCH_EXT_LIST
1845     $CONFIG_LIST
1846     $HAVE_LIST_CMDLINE
1847     $THREADS_LIST
1848     asm
1849     cross_compile
1850     debug
1851     extra_warnings
1852     logging
1853     lto
1854     optimizations
1855     rpath
1856     stripping
1857 "
1858
1859 PATHS_LIST="
1860     bindir
1861     datadir
1862     docdir
1863     incdir
1864     libdir
1865     mandir
1866     prefix
1867     shlibdir
1868 "
1869
1870 CMDLINE_SET="
1871     $PATHS_LIST
1872     ar
1873     arch
1874     as
1875     assert_level
1876     build_suffix
1877     cc
1878     cpu
1879     cross_prefix
1880     cxx
1881     dep_cc
1882     doxygen
1883     extra_version
1884     gas
1885     host_cc
1886     host_cflags
1887     host_ld
1888     host_ldflags
1889     host_libs
1890     host_os
1891     install
1892     ld
1893     logfile
1894     malloc_prefix
1895     nm
1896     optflags
1897     pkg_config
1898     pkg_config_flags
1899     progs_suffix
1900     random_seed
1901     ranlib
1902     samples
1903     strip
1904     sws_max_filter_size
1905     sysinclude
1906     sysroot
1907     target_exec
1908     target_os
1909     target_path
1910     target_samples
1911     tempprefix
1912     toolchain
1913     valgrind
1914     yasmexe
1915 "
1916
1917 CMDLINE_APPEND="
1918     extra_cflags
1919     extra_cxxflags
1920     host_cppflags
1921 "
1922
1923 # code dependency declarations
1924
1925 # architecture extensions
1926
1927 armv5te_deps="arm"
1928 armv6_deps="arm"
1929 armv6t2_deps="arm"
1930 armv8_deps="aarch64"
1931 neon_deps_any="aarch64 arm"
1932 vfp_deps_any="aarch64 arm"
1933 vfpv3_deps="vfp"
1934
1935 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1936
1937 mipsfpu_deps="mips"
1938 mips32r2_deps="mips"
1939 mipsdspr1_deps="mips"
1940 mipsdspr2_deps="mips"
1941
1942 altivec_deps="ppc"
1943 ppc4xx_deps="ppc"
1944 vsx_deps="ppc"
1945
1946 cpunop_deps="i686"
1947 x86_64_select="i686"
1948 x86_64_suggest="fast_cmov"
1949
1950 amd3dnow_deps="mmx"
1951 amd3dnowext_deps="amd3dnow"
1952 i686_deps="x86"
1953 mmx_deps="x86"
1954 mmxext_deps="mmx"
1955 sse_deps="mmxext"
1956 sse2_deps="sse"
1957 sse3_deps="sse2"
1958 ssse3_deps="sse3"
1959 sse4_deps="ssse3"
1960 sse42_deps="sse4"
1961 avx_deps="sse42"
1962 xop_deps="avx"
1963 fma3_deps="avx"
1964 fma4_deps="avx"
1965 avx2_deps="avx"
1966
1967 mmx_external_deps="yasm"
1968 mmx_inline_deps="inline_asm"
1969 mmx_suggest="mmx_external mmx_inline"
1970
1971 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1972     eval dep=\$${ext}_deps
1973     eval ${ext}_external_deps='"${dep}_external"'
1974     eval ${ext}_inline_deps='"${dep}_inline"'
1975     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1976 done
1977
1978 aligned_stack_if_any="aarch64 ppc x86"
1979 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1980 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1981 fast_unaligned_if_any="aarch64 ppc x86"
1982
1983 need_memalign="altivec neon sse"
1984
1985 # system capabilities
1986
1987 symver_if_any="symver_asm_label symver_gnu_asm"
1988
1989 # threading support
1990 atomics_gcc_if="sync_val_compare_and_swap"
1991 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1992 atomics_win32_if="MemoryBarrier"
1993 atomics_native_if_any="$ATOMICS_LIST"
1994 w32threads_deps="atomics_native"
1995 threads_if_any="$THREADS_LIST"
1996
1997 # subsystems
1998 dct_select="rdft"
1999 dsputil_select="fdctdsp idctdsp"
2000 error_resilience_select="dsputil"
2001 frame_thread_encoder_deps="encoders threads"
2002 intrax8_select="error_resilience"
2003 mdct_select="fft"
2004 rdft_select="fft"
2005 mpeg_er_select="error_resilience"
2006 mpegaudio_select="mpegaudiodsp"
2007 mpegaudiodsp_select="dct"
2008 mpegvideo_select="blockdsp dsputil h264chroma hpeldsp idctdsp videodsp"
2009 mpegvideoenc_select="dsputil mpegvideo qpeldsp"
2010
2011 # decoders / encoders
2012 aac_decoder_select="mdct sinewin"
2013 aac_encoder_select="audio_frame_queue mdct sinewin"
2014 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2015 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2016 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2017 ac3_encoder_select="ac3dsp audiodsp dsputil mdct"
2018 ac3_fixed_encoder_select="ac3dsp audiodsp dsputil mdct"
2019 aic_decoder_select="golomb idctdsp"
2020 alac_encoder_select="lpc"
2021 als_decoder_select="bswapdsp"
2022 amrnb_decoder_select="lsp"
2023 amrwb_decoder_select="lsp"
2024 amv_decoder_select="sp5x_decoder exif"
2025 amv_encoder_select="aandcttables mpegvideoenc"
2026 ape_decoder_select="bswapdsp llauddsp"
2027 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2028 asv1_encoder_select="bswapdsp dsputil fdctdsp"
2029 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2030 asv2_encoder_select="bswapdsp dsputil fdctdsp"
2031 atrac1_decoder_select="mdct sinewin"
2032 atrac3_decoder_select="mdct"
2033 atrac3p_decoder_select="mdct sinewin"
2034 avrn_decoder_select="exif"
2035 bink_decoder_select="blockdsp hpeldsp"
2036 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
2037 binkaudio_rdft_decoder_select="mdct rdft sinewin"
2038 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2039 cllc_decoder_select="bswapdsp"
2040 comfortnoise_encoder_select="lpc"
2041 cook_decoder_select="audiodsp mdct sinewin"
2042 cscd_decoder_select="lzo"
2043 cscd_decoder_suggest="zlib"
2044 dca_decoder_select="mdct"
2045 dirac_decoder_select="dsputil dwt golomb videodsp"
2046 dnxhd_decoder_select="blockdsp idctdsp"
2047 dnxhd_encoder_select="aandcttables blockdsp dsputil fdctdsp idctdsp mpegvideoenc"
2048 dvvideo_decoder_select="idctdsp"
2049 dvvideo_encoder_select="dsputil fdctdsp"
2050 dxa_decoder_select="zlib"
2051 eac3_decoder_select="ac3_decoder"
2052 eac3_encoder_select="ac3_encoder"
2053 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2054 eatgq_decoder_select="aandcttables"
2055 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2056 exr_decoder_select="zlib"
2057 ffv1_decoder_select="golomb rangecoder"
2058 ffv1_encoder_select="rangecoder"
2059 ffvhuff_decoder_select="huffyuv_decoder"
2060 ffvhuff_encoder_select="huffyuv_encoder"
2061 fic_decoder_select="golomb"
2062 flac_decoder_select="golomb"
2063 flac_encoder_select="bswapdsp golomb lpc"
2064 flashsv_decoder_select="zlib"
2065 flashsv_encoder_select="zlib"
2066 flashsv2_encoder_select="zlib"
2067 flashsv2_decoder_select="zlib"
2068 flv_decoder_select="h263_decoder"
2069 flv_encoder_select="h263_encoder"
2070 fourxm_decoder_select="blockdsp bswapdsp"
2071 fraps_decoder_select="bswapdsp huffman"
2072 g2m_decoder_select="blockdsp idctdsp zlib"
2073 g729_decoder_select="audiodsp"
2074 h261_decoder_select="mpeg_er mpegvideo"
2075 h261_encoder_select="aandcttables mpegvideoenc"
2076 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2077 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2078 h263i_decoder_select="h263_decoder"
2079 h263p_encoder_select="h263_encoder"
2080 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2081 h264_decoder_suggest="error_resilience"
2082 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2083 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2084 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2085 iac_decoder_select="imc_decoder"
2086 imc_decoder_select="bswapdsp fft mdct sinewin"
2087 indeo3_decoder_select="hpeldsp"
2088 interplay_video_decoder_select="hpeldsp"
2089 jpegls_decoder_select="golomb mjpeg_decoder"
2090 jpegls_encoder_select="golomb"
2091 jv_decoder_select="blockdsp"
2092 lagarith_decoder_select="huffyuvdsp"
2093 ljpeg_encoder_select="aandcttables idctdsp"
2094 loco_decoder_select="golomb"
2095 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2096 metasound_decoder_select="lsp mdct sinewin"
2097 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2098 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp"
2099 mjpeg_encoder_select="aandcttables mpegvideoenc"
2100 mjpegb_decoder_select="mjpeg_decoder"
2101 mlp_decoder_select="mlp_parser"
2102 motionpixels_decoder_select="bswapdsp"
2103 mp1_decoder_select="mpegaudio"
2104 mp1float_decoder_select="mpegaudio"
2105 mp2_decoder_select="mpegaudio"
2106 mp2float_decoder_select="mpegaudio"
2107 mp3_decoder_select="mpegaudio"
2108 mp3adu_decoder_select="mpegaudio"
2109 mp3adufloat_decoder_select="mpegaudio"
2110 mp3float_decoder_select="mpegaudio"
2111 mp3on4_decoder_select="mpegaudio"
2112 mp3on4float_decoder_select="mpegaudio"
2113 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2114 mpc8_decoder_select="mpegaudiodsp"
2115 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2116 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2117 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2118 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2119 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2120 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2121 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2122 mpeg4_encoder_select="h263_encoder"
2123 msmpeg4v1_decoder_select="h263_decoder"
2124 msmpeg4v2_decoder_select="h263_decoder"
2125 msmpeg4v2_encoder_select="h263_encoder"
2126 msmpeg4v3_decoder_select="h263_decoder"
2127 msmpeg4v3_encoder_select="h263_encoder"
2128 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2129 mxpeg_decoder_select="mjpeg_decoder"
2130 nellymoser_decoder_select="mdct sinewin"
2131 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2132 nuv_decoder_select="idctdsp lzo"
2133 on2avc_decoder_select="mdct"
2134 opus_decoder_deps="swresample"
2135 png_decoder_select="zlib"
2136 png_encoder_select="huffyuvencdsp zlib"
2137 prores_decoder_select="blockdsp idctdsp"
2138 prores_encoder_select="fdctdsp"
2139 qcelp_decoder_select="lsp"
2140 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2141 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2142 ra_144_decoder_select="audiodsp"
2143 ralf_decoder_select="golomb"
2144 rawvideo_decoder_select="dsputil"
2145 rtjpeg_decoder_select="dsputil"
2146 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2147 rv10_encoder_select="h263_encoder"
2148 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2149 rv20_encoder_select="h263_encoder"
2150 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2151 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2152 shorten_decoder_select="golomb"
2153 sipr_decoder_select="lsp"
2154 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
2155 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
2156 sonic_decoder_select="golomb rangecoder"
2157 sonic_encoder_select="golomb rangecoder"
2158 sonic_ls_encoder_select="golomb rangecoder"
2159 sp5x_decoder_select="mjpeg_decoder"
2160 svq1_decoder_select="hpeldsp"
2161 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
2162 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2163 svq3_decoder_suggest="zlib"
2164 tak_decoder_select="audiodsp"
2165 theora_decoder_select="vp3_decoder"
2166 thp_decoder_select="mjpeg_decoder"
2167 tiff_decoder_suggest="zlib"
2168 tiff_encoder_suggest="zlib"
2169 truehd_decoder_select="mlp_parser"
2170 truemotion2_decoder_select="bswapdsp"
2171 truespeech_decoder_select="bswapdsp"
2172 tscc_decoder_select="zlib"
2173 twinvq_decoder_select="mdct lsp sinewin"
2174 utvideo_decoder_select="bswapdsp"
2175 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2176 vble_decoder_select="huffyuvdsp"
2177 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp"
2178 vc1image_decoder_select="vc1_decoder"
2179 vorbis_decoder_select="mdct"
2180 vorbis_encoder_select="mdct"
2181 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2182 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2183 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2184 vp6a_decoder_select="vp6_decoder"
2185 vp6f_decoder_select="vp6_decoder"
2186 vp7_decoder_select="h264pred videodsp"
2187 vp8_decoder_select="h264pred videodsp"
2188 vp9_decoder_select="videodsp vp9_parser"
2189 webp_decoder_select="vp8_decoder"
2190 wmalossless_decoder_select="llauddsp"
2191 wmapro_decoder_select="mdct sinewin"
2192 wmav1_decoder_select="mdct sinewin"
2193 wmav1_encoder_select="mdct sinewin"
2194 wmav2_decoder_select="mdct sinewin"
2195 wmav2_encoder_select="mdct sinewin"
2196 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2197 wmv1_decoder_select="h263_decoder"
2198 wmv1_encoder_select="h263_encoder"
2199 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2200 wmv2_encoder_select="h263_encoder"
2201 wmv3_decoder_select="vc1_decoder"
2202 wmv3image_decoder_select="wmv3_decoder"
2203 zerocodec_decoder_select="zlib"
2204 zlib_decoder_select="zlib"
2205 zlib_encoder_select="zlib"
2206 zmbv_decoder_select="zlib"
2207 zmbv_encoder_select="zlib"
2208
2209 # hardware accelerators
2210 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2211 dxva2_deps="dxva2api_h"
2212 vaapi_deps="va_va_h"
2213 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2214 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2215 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2216 xvmc_deps="X11_extensions_XvMClib_h"
2217
2218 h263_vaapi_hwaccel_deps="vaapi"
2219 h263_vaapi_hwaccel_select="h263_decoder"
2220 h263_vdpau_hwaccel_deps="vdpau"
2221 h263_vdpau_hwaccel_select="h263_decoder"
2222 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2223 h264_dxva2_hwaccel_deps="dxva2"
2224 h264_dxva2_hwaccel_select="h264_decoder"
2225 h264_vaapi_hwaccel_deps="vaapi"
2226 h264_vaapi_hwaccel_select="h264_decoder"
2227 h264_vda_decoder_deps="vda"
2228 h264_vda_decoder_select="h264_decoder"
2229 h264_vda_hwaccel_deps="vda"
2230 h264_vda_hwaccel_select="h264_decoder"
2231 h264_vda_old_hwaccel_deps="vda"
2232 h264_vda_old_hwaccel_select="h264_decoder"
2233 h264_vdpau_decoder_deps="vdpau"
2234 h264_vdpau_decoder_select="h264_decoder"
2235 h264_vdpau_hwaccel_deps="vdpau"
2236 h264_vdpau_hwaccel_select="h264_decoder"
2237 mpeg_vdpau_decoder_deps="vdpau"
2238 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2239 mpeg_xvmc_hwaccel_deps="xvmc"
2240 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2241 mpeg1_vdpau_decoder_deps="vdpau"
2242 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2243 mpeg1_vdpau_hwaccel_deps="vdpau"
2244 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2245 mpeg1_xvmc_hwaccel_deps="xvmc"
2246 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2247 mpeg2_crystalhd_decoder_select="crystalhd"
2248 mpeg2_dxva2_hwaccel_deps="dxva2"
2249 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2250 mpeg2_vaapi_hwaccel_deps="vaapi"
2251 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2252 mpeg2_vdpau_hwaccel_deps="vdpau"
2253 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2254 mpeg2_xvmc_hwaccel_deps="xvmc"
2255 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2256 mpeg4_crystalhd_decoder_select="crystalhd"
2257 mpeg4_vaapi_hwaccel_deps="vaapi"
2258 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2259 mpeg4_vdpau_decoder_deps="vdpau"
2260 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2261 mpeg4_vdpau_hwaccel_deps="vdpau"
2262 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2263 msmpeg4_crystalhd_decoder_select="crystalhd"
2264 vc1_crystalhd_decoder_select="crystalhd"
2265 vc1_dxva2_hwaccel_deps="dxva2"
2266 vc1_dxva2_hwaccel_select="vc1_decoder"
2267 vc1_vaapi_hwaccel_deps="vaapi"
2268 vc1_vaapi_hwaccel_select="vc1_decoder"
2269 vc1_vdpau_decoder_deps="vdpau"
2270 vc1_vdpau_decoder_select="vc1_decoder"
2271 vc1_vdpau_hwaccel_deps="vdpau"
2272 vc1_vdpau_hwaccel_select="vc1_decoder"
2273 wmv3_crystalhd_decoder_select="crystalhd"
2274 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2275 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2276 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2277 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2278
2279 # parsers
2280 h264_parser_select="h264_decoder"
2281 hevc_parser_select="hevc_decoder"
2282 mpegvideo_parser_select="mpegvideo"
2283 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2284 vc1_parser_select="mpegvideo vc1_decoder"
2285
2286 # external libraries
2287 libaacplus_encoder_deps="libaacplus"
2288 libcelt_decoder_deps="libcelt"
2289 libfaac_encoder_deps="libfaac"
2290 libfaac_encoder_select="audio_frame_queue"
2291 libfdk_aac_decoder_deps="libfdk_aac"
2292 libfdk_aac_encoder_deps="libfdk_aac"
2293 libfdk_aac_encoder_select="audio_frame_queue"
2294 libgme_demuxer_deps="libgme"
2295 libgsm_decoder_deps="libgsm"
2296 libgsm_encoder_deps="libgsm"
2297 libgsm_ms_decoder_deps="libgsm"
2298 libgsm_ms_encoder_deps="libgsm"
2299 libilbc_decoder_deps="libilbc"
2300 libilbc_encoder_deps="libilbc"
2301 libmodplug_demuxer_deps="libmodplug"
2302 libmp3lame_encoder_deps="libmp3lame"
2303 libmp3lame_encoder_select="audio_frame_queue"
2304 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2305 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2306 libopencore_amrnb_encoder_select="audio_frame_queue"
2307 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2308 libopenjpeg_decoder_deps="libopenjpeg"
2309 libopenjpeg_encoder_deps="libopenjpeg"
2310 libopus_decoder_deps="libopus"
2311 libopus_encoder_deps="libopus"
2312 libopus_encoder_select="audio_frame_queue"
2313 libquvi_demuxer_deps="libquvi"
2314 libschroedinger_decoder_deps="libschroedinger"
2315 libschroedinger_encoder_deps="libschroedinger"
2316 libshine_encoder_deps="libshine"
2317 libshine_encoder_select="audio_frame_queue"
2318 libspeex_decoder_deps="libspeex"
2319 libspeex_encoder_deps="libspeex"
2320 libspeex_encoder_select="audio_frame_queue"
2321 libstagefright_h264_decoder_deps="libstagefright_h264"
2322 libtheora_encoder_deps="libtheora"
2323 libtwolame_encoder_deps="libtwolame"
2324 libvo_aacenc_encoder_deps="libvo_aacenc"
2325 libvo_aacenc_encoder_select="audio_frame_queue"
2326 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2327 libvorbis_decoder_deps="libvorbis"
2328 libvorbis_encoder_deps="libvorbis"
2329 libvorbis_encoder_select="audio_frame_queue"
2330 libvpx_vp8_decoder_deps="libvpx"
2331 libvpx_vp8_encoder_deps="libvpx"
2332 libvpx_vp9_decoder_deps="libvpx"
2333 libvpx_vp9_encoder_deps="libvpx"
2334 libwavpack_encoder_deps="libwavpack"
2335 libwebp_encoder_deps="libwebp"
2336 libx264_encoder_deps="libx264"
2337 libx264rgb_encoder_deps="libx264"
2338 libx265_encoder_deps="libx265"
2339 libxavs_encoder_deps="libxavs"
2340 libxvid_encoder_deps="libxvid"
2341 libutvideo_decoder_deps="libutvideo"
2342 libutvideo_encoder_deps="libutvideo"
2343 libzvbi_teletext_decoder_deps="libzvbi"
2344
2345 # demuxers / muxers
2346 ac3_demuxer_select="ac3_parser"
2347 asf_demuxer_select="riffdec"
2348 asf_muxer_select="riffenc"
2349 asf_stream_muxer_select="asf_muxer"
2350 avi_demuxer_select="riffdec exif"
2351 avi_muxer_select="riffenc"
2352 avisynth_demuxer_deps="avisynth"
2353 avisynth_demuxer_select="riffdec"
2354 caf_demuxer_select="riffdec"
2355 dirac_demuxer_select="dirac_parser"
2356 dts_demuxer_select="dca_parser"
2357 dtshd_demuxer_select="dca_parser"
2358 dxa_demuxer_select="riffdec"
2359 eac3_demuxer_select="ac3_parser"
2360 f4v_muxer_select="mov_muxer"
2361 flac_demuxer_select="flac_parser"
2362 hds_muxer_select="flv_muxer"
2363 hls_muxer_select="mpegts_muxer"
2364 image2_alias_pix_demuxer_select="image2_demuxer"
2365 image2_brender_pix_demuxer_select="image2_demuxer"
2366 ipod_muxer_select="mov_muxer"
2367 ismv_muxer_select="mov_muxer"
2368 libnut_demuxer_deps="libnut"
2369 libnut_muxer_deps="libnut"
2370 matroska_audio_muxer_select="matroska_muxer"
2371 matroska_demuxer_select="riffdec"
2372 matroska_demuxer_suggest="bzlib lzo zlib"
2373 matroska_muxer_select="riffenc"
2374 mmf_muxer_select="riffenc"
2375 mov_demuxer_select="riffdec"
2376 mov_demuxer_suggest="zlib"
2377 mov_muxer_select="riffenc rtpenc_chain"
2378 mp3_demuxer_select="mpegaudio_parser"
2379 mp4_muxer_select="mov_muxer"
2380 mpegts_muxer_select="adts_muxer latm_muxer"
2381 mpegtsraw_demuxer_select="mpegts_demuxer"
2382 mxf_d10_muxer_select="mxf_muxer"
2383 nut_muxer_select="riffenc"
2384 nuv_demuxer_select="riffdec"
2385 ogg_demuxer_select="golomb"
2386 psp_muxer_select="mov_muxer"
2387 rtp_demuxer_select="sdp_demuxer"
2388 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2389 rtsp_demuxer_select="http_protocol rtpdec"
2390 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2391 sap_demuxer_select="sdp_demuxer"
2392 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2393 sdp_demuxer_select="rtpdec"
2394 smoothstreaming_muxer_select="ismv_muxer"
2395 spdif_muxer_select="aac_parser"
2396 tak_demuxer_select="tak_parser"
2397 tg2_muxer_select="mov_muxer"
2398 tgp_muxer_select="mov_muxer"
2399 vobsub_demuxer_select="mpegps_demuxer"
2400 w64_demuxer_select="wav_demuxer"
2401 w64_muxer_select="wav_muxer"
2402 wav_demuxer_select="riffdec"
2403 wav_muxer_select="riffenc"
2404 webm_muxer_select="riffenc"
2405 wtv_demuxer_select="riffdec"
2406 wtv_muxer_select="riffenc"
2407 xmv_demuxer_select="riffdec"
2408 xwma_demuxer_select="riffdec"
2409
2410 # indevs / outdevs
2411 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2412 alsa_outdev_deps="alsa_asoundlib_h"
2413 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2414 avfoundation_indev_select="avfoundation"
2415 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2416 caca_outdev_deps="libcaca"
2417 decklink_outdev_deps="decklink pthreads"
2418 decklink_outdev_extralibs="-lstdc++"
2419 dshow_indev_deps="IBaseFilter"
2420 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2421 dv1394_indev_deps="dv1394"
2422 dv1394_indev_select="dv_demuxer"
2423 fbdev_indev_deps="linux_fb_h"
2424 fbdev_outdev_deps="linux_fb_h"
2425 gdigrab_indev_deps="CreateDIBSection"
2426 gdigrab_indev_extralibs="-lgdi32"
2427 gdigrab_indev_select="bmp_decoder"
2428 iec61883_indev_deps="libiec61883"
2429 jack_indev_deps="jack_jack_h sem_timedwait"
2430 lavfi_indev_deps="avfilter"
2431 libcdio_indev_deps="libcdio"
2432 libdc1394_indev_deps="libdc1394"
2433 libv4l2_indev_deps="libv4l2"
2434 openal_indev_deps="openal"
2435 opengl_outdev_deps="opengl"
2436 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2437 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2438 pulse_indev_deps="libpulse"
2439 pulse_outdev_deps="libpulse"
2440 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2441 qtkit_indev_select="qtkit"
2442 sdl_outdev_deps="sdl"
2443 sndio_indev_deps="sndio_h"
2444 sndio_outdev_deps="sndio_h"
2445 v4l_indev_deps="linux_videodev_h"
2446 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2447 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2448 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2449 vfwcap_indev_extralibs="-lavicap32"
2450 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2451 xv_outdev_extralibs="-lXv -lX11 -lXext"
2452 x11grab_indev_deps="x11grab"
2453
2454 # protocols
2455 bluray_protocol_deps="libbluray"
2456 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2457 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2458 ffrtmpcrypt_protocol_select="tcp_protocol"
2459 ffrtmphttp_protocol_deps="!librtmp_protocol"
2460 ffrtmphttp_protocol_select="http_protocol"
2461 ftp_protocol_select="tcp_protocol"
2462 gopher_protocol_select="network"
2463 http_protocol_select="tcp_protocol"
2464 httpproxy_protocol_select="tcp_protocol"
2465 https_protocol_select="tls_protocol"
2466 librtmp_protocol_deps="librtmp"
2467 librtmpe_protocol_deps="librtmp"
2468 librtmps_protocol_deps="librtmp"
2469 librtmpt_protocol_deps="librtmp"
2470 librtmpte_protocol_deps="librtmp"
2471 libssh_protocol_deps="libssh"
2472 mmsh_protocol_select="http_protocol"
2473 mmst_protocol_select="network"
2474 rtmp_protocol_deps="!librtmp_protocol"
2475 rtmp_protocol_select="tcp_protocol"
2476 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2477 rtmps_protocol_deps="!librtmp_protocol"
2478 rtmps_protocol_select="tls_protocol"
2479 rtmpt_protocol_select="ffrtmphttp_protocol"
2480 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2481 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2482 rtp_protocol_select="udp_protocol"
2483 sctp_protocol_deps="struct_sctp_event_subscribe"
2484 sctp_protocol_select="network"
2485 srtp_protocol_select="rtp_protocol"
2486 tcp_protocol_select="network"
2487 tls_protocol_deps_any="openssl gnutls"
2488 tls_protocol_select="tcp_protocol"
2489 udp_protocol_select="network"
2490 unix_protocol_deps="sys_un_h"
2491 unix_protocol_select="network"
2492
2493 # filters
2494 aconvert_filter_deps="swresample"
2495 amovie_filter_deps="avcodec avformat"
2496 aresample_filter_deps="swresample"
2497 ass_filter_deps="libass"
2498 asyncts_filter_deps="avresample"
2499 atempo_filter_deps="avcodec"
2500 atempo_filter_select="rdft"
2501 azmq_filter_deps="libzmq"
2502 blackframe_filter_deps="gpl"
2503 boxblur_filter_deps="gpl"
2504 bs2b_filter_deps="libbs2b"
2505 colormatrix_filter_deps="gpl"
2506 cropdetect_filter_deps="gpl"
2507 dctdnoiz_filter_deps="avcodec"
2508 dctdnoiz_filter_select="dct"
2509 delogo_filter_deps="gpl"
2510 deshake_filter_deps="avcodec"
2511 deshake_filter_select="dsputil"
2512 drawtext_filter_deps="libfreetype"
2513 ebur128_filter_deps="gpl"
2514 flite_filter_deps="libflite"
2515 frei0r_filter_deps="frei0r dlopen"
2516 frei0r_filter_extralibs='$ldl'
2517 frei0r_src_filter_deps="frei0r dlopen"
2518 frei0r_src_filter_extralibs='$ldl'
2519 geq_filter_deps="gpl"
2520 histeq_filter_deps="gpl"
2521 hqdn3d_filter_deps="gpl"
2522 interlace_filter_deps="gpl"
2523 kerndeint_filter_deps="gpl"
2524 ladspa_filter_deps="ladspa dlopen"
2525 ladspa_filter_extralibs='$ldl'
2526 mcdeint_filter_deps="avcodec gpl"
2527 movie_filter_deps="avcodec avformat"
2528 mp_filter_deps="gpl avcodec swscale inline_asm"
2529 mpdecimate_filter_deps="gpl avcodec"
2530 mptestsrc_filter_deps="gpl"
2531 negate_filter_deps="lut_filter"
2532 perspective_filter_deps="gpl"
2533 ocv_filter_deps="libopencv"
2534 owdenoise_filter_deps="gpl"
2535 pan_filter_deps="swresample"
2536 phase_filter_deps="gpl"
2537 pp_filter_deps="gpl postproc"
2538 pullup_filter_deps="gpl"
2539 removelogo_filter_deps="avcodec avformat swscale"
2540 resample_filter_deps="avresample"
2541 sab_filter_deps="gpl swscale"
2542 scale_filter_deps="swscale"
2543 smartblur_filter_deps="gpl swscale"
2544 showspectrum_filter_deps="avcodec"
2545 showspectrum_filter_select="rdft"
2546 spp_filter_deps="gpl avcodec"
2547 spp_filter_select="dsputil fft idctdsp"
2548 stereo3d_filter_deps="gpl"
2549 subtitles_filter_deps="avformat avcodec libass"
2550 super2xsai_filter_deps="gpl"
2551 tinterlace_filter_deps="gpl"
2552 vidstabdetect_filter_deps="libvidstab"
2553 vidstabtransform_filter_deps="libvidstab"
2554 pixfmts_super2xsai_test_deps="super2xsai_filter"
2555 tinterlace_merge_test_deps="tinterlace_filter"
2556 tinterlace_pad_test_deps="tinterlace_filter"
2557 zmq_filter_deps="libzmq"
2558 zoompan_filter_deps="swscale"
2559
2560 # examples
2561 avio_reading="avformat avcodec avutil"
2562 avcodec_example_deps="avcodec avutil"
2563 demuxing_decoding_example_deps="avcodec avformat avutil"
2564 filter_audio_example_deps="avfilter avutil"
2565 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2566 filtering_video_example_deps="avfilter avcodec avformat avutil"
2567 metadata_example_deps="avformat avutil"
2568 muxing_example_deps="avcodec avformat avutil swscale"
2569 remuxing_example_deps="avcodec avformat avutil"
2570 resampling_audio_example_deps="avutil swresample"
2571 scaling_video_example_deps="avutil swscale"
2572 transcode_aac_example_deps="avcodec avformat swresample"
2573 transcoding_example_deps="avfilter avcodec avformat avutil"
2574
2575 # libraries, in linking order
2576 avcodec_deps="avutil"
2577 avdevice_deps="avformat avcodec avutil"
2578 avfilter_deps="avutil"
2579 avformat_deps="avcodec avutil"
2580 avresample_deps="avutil"
2581 postproc_deps="avutil gpl"
2582 swresample_deps="avutil"
2583 swscale_deps="avutil"
2584
2585 # programs
2586 ffmpeg_deps="avcodec avfilter avformat swresample"
2587 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2588                null_filter
2589                setpts_filter trim_filter"
2590 ffplay_deps="avcodec avformat swscale swresample sdl"
2591 ffplay_libs='$sdl_libs'
2592 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2593 ffprobe_deps="avcodec avformat"
2594 ffserver_deps="avformat fork sarestart"
2595 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2596
2597 # documentation
2598 podpages_deps="perl"
2599 manpages_deps="perl pod2man"
2600 htmlpages_deps="perl texi2html"
2601 txtpages_deps="perl makeinfo"
2602 doc_deps_any="manpages htmlpages podpages txtpages"
2603
2604 # default parameters
2605
2606 logfile="config.log"
2607
2608 # installation paths
2609 prefix_default="/usr/local"
2610 bindir_default='${prefix}/bin'
2611 datadir_default='${prefix}/share/ffmpeg'
2612 docdir_default='${prefix}/share/doc/ffmpeg'
2613 incdir_default='${prefix}/include'
2614 libdir_default='${prefix}/lib'
2615 mandir_default='${prefix}/share/man'
2616 shlibdir_default="$libdir_default"
2617
2618 # toolchain
2619 ar_default="ar"
2620 cc_default="gcc"
2621 cxx_default="g++"
2622 host_cc_default="gcc"
2623 cp_f="cp -f"
2624 doxygen_default="doxygen"
2625 install="install"
2626 ln_s="ln -s -f"
2627 nm_default="nm -g"
2628 objformat="elf"
2629 pkg_config_default=pkg-config
2630 ranlib_default="ranlib"
2631 strip_default="strip"
2632 yasmexe_default="yasm"
2633 windres_default="windres"
2634
2635 nogas=":"
2636
2637 # OS
2638 target_os_default=$(tolower $(uname -s))
2639 host_os=$target_os_default
2640
2641 # machine
2642 if test "$target_os_default" = aix; then
2643     arch_default=$(uname -p)
2644     strip_default="strip -X32_64"
2645 else
2646     arch_default=$(uname -m)
2647 fi
2648 cpu="generic"
2649
2650 # configurable options
2651 enable $PROGRAM_LIST
2652 enable $DOCUMENT_LIST
2653 enable $EXAMPLE_LIST
2654 enable $(filter_out avresample $LIBRARY_LIST)
2655 enable stripping
2656
2657 enable asm
2658 enable debug
2659 enable doc
2660 enable optimizations
2661 enable runtime_cpudetect
2662 enable safe_bitstream_reader
2663 enable static
2664 enable swscale_alpha
2665
2666 sws_max_filter_size_default=256
2667 set_default sws_max_filter_size
2668
2669 # Enable hwaccels by default.
2670 enable dxva2 vaapi vda vdpau xvmc
2671 enable xlib
2672
2673 # build settings
2674 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2675 LIBPREF="lib"
2676 LIBSUF=".a"
2677 FULLNAME='$(NAME)$(BUILDSUF)'
2678 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2679 SLIBPREF="lib"
2680 SLIBSUF=".so"
2681 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2682 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2683 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2684 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2685 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2686 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2687
2688 asflags_filter=echo
2689 cflags_filter=echo
2690 ldflags_filter=echo
2691
2692 AS_C='-c'
2693 AS_O='-o $@'
2694 CC_C='-c'
2695 CC_E='-E -o $@'
2696 CC_O='-o $@'
2697 CXX_C='-c'
2698 CXX_O='-o $@'
2699 LD_O='-o $@'
2700 LD_LIB='-l%'
2701 LD_PATH='-L'
2702 HOSTCC_C='-c'
2703 HOSTCC_E='-E -o $@'
2704 HOSTCC_O='-o $@'
2705 HOSTLD_O='-o $@'
2706
2707 host_libs='-lm'
2708 host_cflags_filter=echo
2709 host_ldflags_filter=echo
2710
2711 target_path='$(CURDIR)'
2712
2713 # since the object filename is not given with the -MM flag, the compiler
2714 # is only able to print the basename, and we must add the path ourselves
2715 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2716 DEPFLAGS='-MM'
2717
2718 # find source path
2719 if test -f configure; then
2720     source_path=.
2721 else
2722     source_path=$(cd $(dirname "$0"); pwd)
2723     echo "$source_path" | grep -q '[[:blank:]]' &&
2724         die "Out of tree builds are impossible with whitespace in source path."
2725     test -e "$source_path/config.h" &&
2726         die "Out of tree builds are impossible with config.h in source dir."
2727 fi
2728
2729 for v in "$@"; do
2730     r=${v#*=}
2731     l=${v%"$r"}
2732     r=$(sh_quote "$r")
2733     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2734 done
2735
2736 find_things(){
2737     thing=$1
2738     pattern=$2
2739     file=$source_path/$3
2740     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2741 }
2742
2743 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2744 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2745 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2746 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2747 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2748 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2749 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2750 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2751 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2752 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2753 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2754
2755 ALL_COMPONENTS="
2756     $BSF_LIST
2757     $DECODER_LIST
2758     $DEMUXER_LIST
2759     $ENCODER_LIST
2760     $FILTER_LIST
2761     $HWACCEL_LIST
2762     $INDEV_LIST
2763     $MUXER_LIST
2764     $OUTDEV_LIST
2765     $PARSER_LIST
2766     $PROTOCOL_LIST
2767 "
2768
2769 for n in $COMPONENT_LIST; do
2770     v=$(toupper ${n%s})_LIST
2771     eval enable \$$v
2772     eval ${n}_if_any="\$$v"
2773 done
2774
2775 enable $ARCH_EXT_LIST
2776
2777 die_unknown(){
2778     echo "Unknown option \"$1\"."
2779     echo "See $0 --help for available options."
2780     exit 1
2781 }
2782
2783 print_3_columns() {
2784     cat | tr ' ' '\n' | sort | pr -r -3 -t
2785 }
2786
2787 show_list() {
2788     suffix=_$1
2789     shift
2790     echo $* | sed s/$suffix//g | print_3_columns
2791     exit 0
2792 }
2793
2794 rand_list(){
2795     IFS=', '
2796     set -- $*
2797     unset IFS
2798     for thing; do
2799         comp=${thing%:*}
2800         prob=${thing#$comp}
2801         prob=${prob#:}
2802         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2803         echo "prob ${prob:-0.5}"
2804         printf '%s\n' $comp
2805     done
2806 }
2807
2808 do_random(){
2809     action=$1
2810     shift
2811     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2812     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2813 }
2814
2815 for opt do
2816     optval="${opt#*=}"
2817     case "$opt" in
2818         --extra-ldflags=*)
2819             add_ldflags $optval
2820         ;;
2821         --extra-libs=*)
2822             add_extralibs $optval
2823         ;;
2824         --disable-devices)
2825             disable $INDEV_LIST $OUTDEV_LIST
2826         ;;
2827         --enable-debug=*)
2828             debuglevel="$optval"
2829         ;;
2830         --disable-programs)
2831             disable $PROGRAM_LIST
2832         ;;
2833         --disable-everything)
2834             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2835         ;;
2836         --disable-all)
2837             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2838             disable $LIBRARY_LIST $PROGRAM_LIST doc
2839         ;;
2840         --enable-random|--disable-random)
2841             action=${opt%%-random}
2842             do_random ${action#--} $COMPONENT_LIST
2843         ;;
2844         --enable-random=*|--disable-random=*)
2845             action=${opt%%-random=*}
2846             do_random ${action#--} $optval
2847         ;;
2848         --enable-*=*|--disable-*=*)
2849             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2850             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2851             eval list=\$$(toupper $thing)_LIST
2852             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2853             list=$(filter "$name" $list)
2854             [ "$list" = "" ] && warn "Option $opt did not match anything"
2855             $action $list
2856         ;;
2857         --enable-?*|--disable-?*)
2858             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2859             if is_in $option $COMPONENT_LIST; then
2860                 test $action = disable && action=unset
2861                 eval $action \$$(toupper ${option%s})_LIST
2862             elif is_in $option $CMDLINE_SELECT; then
2863                 $action $option
2864             else
2865                 die_unknown $opt
2866             fi
2867         ;;
2868         --list-*)
2869             NAME="${opt#--list-}"
2870             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2871             NAME=${NAME%s}
2872             eval show_list $NAME \$$(toupper $NAME)_LIST
2873         ;;
2874         --help|-h) show_help
2875         ;;
2876         --fatal-warnings) enable fatal_warnings
2877         ;;
2878         *)
2879             optname="${opt%%=*}"
2880             optname="${optname#--}"
2881             optname=$(echo "$optname" | sed 's/-/_/g')
2882             if is_in $optname $CMDLINE_SET; then
2883                 eval $optname='$optval'
2884             elif is_in $optname $CMDLINE_APPEND; then
2885                 append $optname "$optval"
2886             else
2887                 die_unknown $opt
2888             fi
2889         ;;
2890     esac
2891 done
2892
2893 disabled logging && logfile=/dev/null
2894
2895 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2896 set >> $logfile
2897
2898 test -n "$cross_prefix" && enable cross_compile
2899
2900 if enabled cross_compile; then
2901     test -n "$arch" && test -n "$target_os" ||
2902         die "Must specify target arch and OS when cross-compiling"
2903 fi
2904
2905 ar_default="${cross_prefix}${ar_default}"
2906 cc_default="${cross_prefix}${cc_default}"
2907 cxx_default="${cross_prefix}${cxx_default}"
2908 nm_default="${cross_prefix}${nm_default}"
2909 pkg_config_default="${cross_prefix}${pkg_config_default}"
2910 ranlib_default="${cross_prefix}${ranlib_default}"
2911 strip_default="${cross_prefix}${strip_default}"
2912 windres_default="${cross_prefix}${windres_default}"
2913
2914 sysinclude_default="${sysroot}/usr/include"
2915
2916 test -n "$valgrind" && toolchain="valgrind-memcheck"
2917
2918 case "$toolchain" in
2919     clang-asan)
2920         cc_default="clang"
2921         add_cflags  -fsanitize=address
2922         add_ldflags -fsanitize=address
2923     ;;
2924     clang-tsan)
2925         cc_default="clang"
2926         add_cflags  -fsanitize=thread -pie
2927         add_ldflags -fsanitize=thread -pie
2928     ;;
2929     clang-usan)
2930         cc_default="clang"
2931         add_cflags  -fsanitize=undefined
2932         add_ldflags -fsanitize=undefined
2933     ;;
2934     gcc-asan)
2935         cc_default="gcc"
2936         add_cflags  -fsanitize=address
2937         add_ldflags -fsanitize=address
2938     ;;
2939     gcc-tsan)
2940         cc_default="gcc"
2941         add_cflags  -fsanitize=thread -pie -fPIC
2942         add_ldflags -fsanitize=thread -pie -fPIC
2943     ;;
2944     gcc-usan)
2945         cc_default="gcc"
2946         add_cflags  -fsanitize=undefined
2947         add_ldflags -fsanitize=undefined
2948     ;;
2949     valgrind-massif)
2950         target_exec_default=${valgrind:-"valgrind"}
2951         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"
2952     ;;
2953     valgrind-memcheck)
2954         target_exec_default=${valgrind:-"valgrind"}
2955         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2956     ;;
2957     msvc)
2958         # Check whether the current MSVC version needs the C99 converter.
2959         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2960         # support enough of C99 to build ffmpeg. Default to the new
2961         # behaviour if the regexp was unable to match anything, since this
2962         # successfully parses the version number of existing supported
2963         # versions that require the converter (MSVC 2010 and 2012).
2964         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2965         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2966             cc_default="cl"
2967         else
2968             cc_default="c99wrap cl"
2969         fi
2970         ld_default="link"
2971         nm_default="dumpbin -symbols"
2972         ar_default="lib"
2973         target_os_default="win32"
2974         # Use a relative path for TMPDIR. This makes sure all the
2975         # ffconf temp files are written with a relative path, avoiding
2976         # issues with msys/win32 path conversion for MSVC parameters
2977         # such as -Fo<file> or -out:<file>.
2978         TMPDIR=.
2979     ;;
2980     icl)
2981         cc_default="icl"
2982         ld_default="xilink"
2983         nm_default="dumpbin -symbols"
2984         ar_default="xilib"
2985         target_os_default="win32"
2986         TMPDIR=.
2987     ;;
2988     gcov)
2989         add_cflags  -fprofile-arcs -ftest-coverage
2990         add_ldflags -fprofile-arcs -ftest-coverage
2991     ;;
2992     hardened)
2993         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2994         add_ldflags -Wl,-z,relro -Wl,-z,now
2995     ;;
2996     ?*)
2997         die "Unknown toolchain $toolchain"
2998     ;;
2999 esac
3000
3001 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3002     target_exec target_os yasmexe
3003 enabled cross_compile || host_cc_default=$cc
3004 set_default host_cc
3005
3006 if ! $pkg_config --version >/dev/null 2>&1; then
3007     warn "$pkg_config not found, library detection may fail."
3008     pkg_config=false
3009 fi
3010
3011 if test $doxygen != $doxygen_default && \
3012   ! $doxygen --version >/dev/null 2>&1; then
3013     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3014 fi
3015
3016 exesuf() {
3017     case $1 in
3018         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3019     esac
3020 }
3021
3022 EXESUF=$(exesuf $target_os)
3023 HOSTEXESUF=$(exesuf $host_os)
3024
3025 # set temporary file name
3026 : ${TMPDIR:=$TEMPDIR}
3027 : ${TMPDIR:=$TMP}
3028 : ${TMPDIR:=/tmp}
3029
3030 if [ -n "$tempprefix" ] ; then
3031     mktemp(){
3032         echo $tempprefix.${HOSTNAME}.${UID}
3033     }
3034 elif ! check_cmd mktemp -u XXXXXX; then
3035     # simple replacement for missing mktemp
3036     # NOT SAFE FOR GENERAL USE
3037     mktemp(){
3038         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3039     }
3040 fi
3041
3042 tmpfile(){
3043     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3044         (set -C; exec > $tmp) 2>/dev/null ||
3045         die "Unable to create temporary file in $TMPDIR."
3046     append TMPFILES $tmp
3047     eval $1=$tmp
3048 }
3049
3050 trap 'rm -f -- $TMPFILES' EXIT
3051
3052 tmpfile TMPASM .asm
3053 tmpfile TMPC   .c
3054 tmpfile TMPCPP .cpp
3055 tmpfile TMPE   $EXESUF
3056 tmpfile TMPH   .h
3057 tmpfile TMPM   .m
3058 tmpfile TMPO   .o
3059 tmpfile TMPS   .S
3060 tmpfile TMPSH  .sh
3061 tmpfile TMPV   .ver
3062
3063 unset -f mktemp
3064
3065 chmod +x $TMPE
3066
3067 # make sure we can execute files in $TMPDIR
3068 cat > $TMPSH 2>> $logfile <<EOF
3069 #! /bin/sh
3070 EOF
3071 chmod +x $TMPSH >> $logfile 2>&1
3072 if ! $TMPSH >> $logfile 2>&1; then
3073     cat <<EOF
3074 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3075 variable to another directory and make sure that it is not mounted noexec.
3076 EOF
3077     die "Sanity test failed."
3078 fi
3079
3080 ccc_flags(){
3081     for flag; do
3082         case $flag in
3083             -std=c99)           echo -c99                       ;;
3084             -mcpu=*)            echo -arch ${flag#*=}           ;;
3085             -mieee)             echo -ieee                      ;;
3086             -O*|-fast)          echo $flag                      ;;
3087             -fno-math-errno)    echo -assume nomath_errno       ;;
3088             -g)                 echo -g3                        ;;
3089             -Wall)              echo -msg_enable level2         ;;
3090             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3091             -Wl,*)              echo $flag                      ;;
3092             -f*|-W*)                                            ;;
3093             *)                  echo $flag                      ;;
3094         esac
3095    done
3096 }
3097
3098 cparser_flags(){
3099     for flag; do
3100         case $flag in
3101             -Wno-switch)             echo -Wno-switch-enum ;;
3102             -Wno-format-zero-length) ;;
3103             -Wdisabled-optimization) ;;
3104             -Wno-pointer-sign)       echo -Wno-other ;;
3105             *)                       echo $flag ;;
3106         esac
3107     done
3108 }
3109
3110 msvc_common_flags(){
3111     for flag; do
3112         case $flag in
3113             # In addition to specifying certain flags under the compiler
3114             # specific filters, they must be specified here as well or else the
3115             # generic catch all at the bottom will print the original flag.
3116             -Wall)                ;;
3117             -std=c99)             ;;
3118             # Common flags
3119             -fomit-frame-pointer) ;;
3120             -g)                   echo -Z7 ;;
3121             -fno-math-errno)      ;;
3122             -fno-common)          ;;
3123             -fno-signed-zeros)    ;;
3124             -fPIC)                ;;
3125             -mthumb)              ;;
3126             -march=*)             ;;
3127             -lz)                  echo zlib.lib ;;
3128             -lavifil32)           echo vfw32.lib ;;
3129             -lavicap32)           echo vfw32.lib user32.lib ;;
3130             -l*)                  echo ${flag#-l}.lib ;;
3131             *)                    echo $flag ;;
3132         esac
3133     done
3134 }
3135
3136 msvc_flags(){
3137     msvc_common_flags "$@"
3138     for flag; do
3139         case $flag in
3140             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3141                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3142                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3143                                        -wd4554 \
3144                                        -wd4273 ;;
3145         esac
3146     done
3147 }
3148
3149 icl_flags(){
3150     msvc_common_flags "$@"
3151     for flag; do
3152         case $flag in
3153             # Despite what Intel's documentation says -Wall, which is supported
3154             # on Windows, does enable remarks so disable them here.
3155             -Wall)                echo $flag -Qdiag-disable:remark ;;
3156             -std=c99)             echo -Qstd=c99 ;;
3157             -flto)                echo -ipo ;;
3158         esac
3159     done
3160 }
3161
3162 icc_flags(){
3163     for flag; do
3164         case $flag in
3165             -flto)                echo -ipo ;;
3166             *)                    echo $flag ;;
3167         esac
3168     done
3169 }
3170
3171 pgi_flags(){
3172     for flag; do
3173         case $flag in
3174             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3175             -fomit-frame-pointer) echo -Mnoframe ;;
3176             -g)                   echo -gopt ;;
3177             *)                    echo $flag ;;
3178         esac
3179     done
3180 }
3181
3182 suncc_flags(){
3183     for flag; do
3184         case $flag in
3185             -march=*|-mcpu=*)
3186                 case "${flag#*=}" in
3187                     native)                   echo -xtarget=native       ;;
3188                     v9|niagara)               echo -xarch=sparc          ;;
3189                     ultrasparc)               echo -xarch=sparcvis       ;;
3190                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3191                     i586|pentium)             echo -xchip=pentium        ;;
3192                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3193                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3194                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3195                     pentium4*)          echo -xtarget=pentium4           ;;
3196                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3197                     *-sse3)             echo -xarch=sse3                 ;;
3198                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3199                     bonnell)                   echo -xarch=ssse3         ;;
3200                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3201                     westmere)                  echo -xtarget=westmere    ;;
3202                     silvermont)                echo -xarch=sse4_2        ;;
3203                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3204                     core-avx*|ivybridge|haswell|broadwell)
3205                                                echo -xarch=avx           ;;
3206                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3207                     btver1)                    echo -xarch=amdsse4a      ;;
3208                     btver2|bdver*)             echo -xarch=avx           ;;
3209                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3210                     k8|opteron|athlon64|athlon-fx)
3211                                                echo -xarch=sse2a         ;;
3212                     athlon*)                   echo -xarch=pentium_proa  ;;
3213                 esac
3214                 ;;
3215             -std=c99)             echo -xc99              ;;
3216             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3217             -fPIC)                echo -KPIC -xcode=pic32 ;;
3218             -W*,*)                echo $flag              ;;
3219             -f*-*|-W*|-mimpure-text)                      ;;
3220             -shared)              echo -G                 ;;
3221             *)                    echo $flag              ;;
3222         esac
3223     done
3224 }
3225
3226 tms470_flags(){
3227     for flag; do
3228         case $flag in
3229             -march=*|-mcpu=*)
3230                 case "${flag#*=}" in
3231                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3232                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3233                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3234                     armv6*|arm11*)          echo -mv=6   ;;
3235                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3236                                             echo -mv=5e  ;;
3237                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3238                 esac
3239                 ;;
3240             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3241             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3242             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3243             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3244             -msoft-float)   echo --float_support=vfplib       ;;
3245             -O[0-3]|-mf=*)  echo $flag                        ;;
3246             -g)             echo -g -mn                       ;;
3247             -pds=*)         echo $flag                        ;;
3248             -D*|-I*)        echo $flag                        ;;
3249             --gcc|--abi=*)  echo $flag                        ;;
3250             -me)            echo $flag                        ;;
3251         esac
3252     done
3253 }
3254
3255 probe_cc(){
3256     pfx=$1
3257     _cc=$2
3258
3259     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3260     unset _ld_o _ldflags _ld_lib _ld_path
3261     unset _depflags _DEPCMD _DEPFLAGS
3262     _flags_filter=echo
3263
3264     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3265         true # no-op to avoid reading stdin in following checks
3266     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3267         _type=llvm_gcc
3268         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3269         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3270         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3271         _cflags_speed='-O3'
3272         _cflags_size='-Os'
3273     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3274         _type=gcc
3275         gcc_version=$($_cc --version | head -n1)
3276         gcc_basever=$($_cc -dumpversion)
3277         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3278         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3279         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3280         if ! $_cc -dumpversion | grep -q '^2\.'; then
3281             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3282         fi
3283         _cflags_speed='-O3'
3284         _cflags_size='-Os'
3285     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3286         _type=icc
3287         _ident=$($_cc --version | head -n1)
3288         _depflags='-MMD'
3289         _cflags_speed='-O3'
3290         _cflags_size='-Os'
3291         _cflags_noopt='-O1'
3292         _flags_filter=icc_flags
3293     elif $_cc -v 2>&1 | grep -q xlc; then
3294         _type=xlc
3295         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3296         _cflags_speed='-O5'
3297         _cflags_size='-O5 -qcompact'
3298     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3299         _type=ccc
3300         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3301         _DEPFLAGS='-M'
3302         _cflags_speed='-fast'
3303         _cflags_size='-O1'
3304         _flags_filter=ccc_flags
3305     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3306         test -d "$sysroot" || die "No valid sysroot specified."
3307         _type=armcc
3308         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
3309         armcc_conf="$PWD/armcc.conf"
3310         $_cc --arm_linux_configure                 \
3311              --arm_linux_config_file="$armcc_conf" \
3312              --configure_sysroot="$sysroot"        \
3313              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3314              die "Error creating armcc configuration file."
3315         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3316         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3317         as_default="${cross_prefix}gcc"
3318         _depflags='-MMD'
3319         _cflags_speed='-O3'
3320         _cflags_size='-Os'
3321     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3322         _type=tms470
3323         _ident=$($_cc -version | head -n1 | tr -s ' ')
3324         _flags='--gcc --abi=eabi -me'
3325         _cc_e='-ppl -fe=$@'
3326         _cc_o='-fe=$@'
3327         _depflags='-ppa -ppd=$(@:.o=.d)'
3328         _cflags_speed='-O3 -mf=5'
3329         _cflags_size='-O3 -mf=2'
3330         _flags_filter=tms470_flags
3331     elif $_cc -v 2>&1 | grep -q clang; then
3332         _type=clang
3333         _ident=$($_cc --version | head -n1)
3334         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3335         _cflags_speed='-O3'
3336         _cflags_size='-Os'
3337     elif $_cc -V 2>&1 | grep -q Sun; then
3338         _type=suncc
3339         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3340         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3341         _DEPFLAGS='-xM1 -xc99'
3342         _ldflags='-std=c99'
3343         _cflags_speed='-O5'
3344         _cflags_size='-O5 -xspace'
3345         _flags_filter=suncc_flags
3346     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3347         _type=pathscale
3348         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3349         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3350         _cflags_speed='-O2'
3351         _cflags_size='-Os'
3352         _flags_filter='filter_out -Wdisabled-optimization'
3353     elif $_cc -v 2>&1 | grep -q Open64; then
3354         _type=open64
3355         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3356         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3357         _cflags_speed='-O2'
3358         _cflags_size='-Os'
3359         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3360     elif $_cc -V 2>&1 | grep -q Portland; then
3361         _type=pgi
3362         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3363         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3364         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3365         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3366         _cflags_noopt="-O"
3367         _flags_filter=pgi_flags
3368     elif $_cc 2>&1 | grep -q Microsoft; then
3369         _type=msvc
3370         _ident=$($cc 2>&1 | head -n1)
3371         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3372         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3373         _cflags_speed="-O2"
3374         _cflags_size="-O1"
3375         if $_cc 2>&1 | grep -q Linker; then
3376             _ld_o='-out:$@'
3377         else
3378             _ld_o='-Fe$@'
3379         fi
3380         _cc_o='-Fo$@'
3381         _cc_e='-P -Fi$@'
3382         _flags_filter=msvc_flags
3383         _ld_lib='lib%.a'
3384         _ld_path='-libpath:'
3385         _flags='-nologo'
3386         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3387         if [ $pfx = hostcc ]; then
3388             append _cflags -Dsnprintf=_snprintf
3389         fi
3390         disable stripping
3391     elif $_cc 2>&1 | grep -q Intel; then
3392         _type=icl
3393         _ident=$($cc 2>&1 | head -n1)
3394         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3395         # Not only is O3 broken on 13.x+ but it is slower on all previous
3396         # versions (tested) as well.
3397         _cflags_speed="-O2"
3398         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3399         if $_cc 2>&1 | grep -q Linker; then
3400             _ld_o='-out:$@'
3401         else
3402             _ld_o='-Fe$@'
3403         fi
3404         _cc_o='-Fo$@'
3405         _cc_e='-P'
3406         _flags_filter=icl_flags
3407         _ld_lib='lib%.a'
3408         _ld_path='-libpath:'
3409         # -Qdiag-error to make icl error when seeing certain unknown arguments
3410         _flags='-nologo -Qdiag-error:4044,10157'
3411         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3412         # with MSVC which enables it by default.
3413         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3414         if [ $pfx = hostcc ]; then
3415             append _cflags -Dsnprintf=_snprintf
3416         fi
3417     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3418         _type=cparser
3419         _ident=$($_cc --version | head -n1)
3420         _depflags='-MMD'
3421         _cflags_speed='-O4'
3422         _cflags_size='-O2'
3423         _flags_filter=cparser_flags
3424     fi
3425
3426     eval ${pfx}_type=\$_type
3427     eval ${pfx}_ident=\$_ident
3428 }
3429
3430 set_ccvars(){
3431     eval ${1}_C=\${_cc_c-\${${1}_C}}
3432     eval ${1}_E=\${_cc_e-\${${1}_E}}
3433     eval ${1}_O=\${_cc_o-\${${1}_O}}
3434
3435     if [ -n "$_depflags" ]; then
3436         eval ${1}_DEPFLAGS=\$_depflags
3437     else
3438         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3439         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3440         eval DEP${1}FLAGS=\$_flags
3441     fi
3442 }
3443
3444 probe_cc cc "$cc"
3445 cflags_filter=$_flags_filter
3446 cflags_speed=$_cflags_speed
3447 cflags_size=$_cflags_size
3448 cflags_noopt=$_cflags_noopt
3449 add_cflags $_flags $_cflags
3450 cc_ldflags=$_ldflags
3451 set_ccvars CC
3452
3453 probe_cc hostcc "$host_cc"
3454 host_cflags_filter=$_flags_filter
3455 add_host_cflags  $_flags $_cflags
3456 set_ccvars HOSTCC
3457
3458 test -n "$cc_type" && enable $cc_type ||
3459     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3460
3461 : ${as_default:=$cc}
3462 : ${dep_cc_default:=$cc}
3463 : ${ld_default:=$cc}
3464 : ${host_ld_default:=$host_cc}
3465 set_default ar as dep_cc ld host_ld windres
3466
3467 probe_cc as "$as"
3468 asflags_filter=$_flags_filter
3469 add_asflags $_flags $_cflags
3470 set_ccvars AS
3471
3472 probe_cc ld "$ld"
3473 ldflags_filter=$_flags_filter
3474 add_ldflags $_flags $_ldflags
3475 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3476 LD_O=${_ld_o-$LD_O}
3477 LD_LIB=${_ld_lib-$LD_LIB}
3478 LD_PATH=${_ld_path-$LD_PATH}
3479
3480 probe_cc hostld "$host_ld"
3481 host_ldflags_filter=$_flags_filter
3482 add_host_ldflags $_flags $_ldflags
3483 HOSTLD_O=${_ld_o-$HOSTLD_O}
3484
3485 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3486     probe_cc depcc "$dep_cc"
3487     CCDEP=${_DEPCMD:-$DEPCMD}
3488     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3489     DEPCCFLAGS=$_flags
3490 fi
3491
3492 if $ar 2>&1 | grep -q Microsoft; then
3493     arflags="-nologo"
3494     ar_o='-out:$@'
3495 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3496     arflags="rq"
3497     ar_o='$@'
3498 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3499     arflags='-Xany -r -c'
3500     ar_o='$@'
3501 else
3502     arflags="rc"
3503     ar_o='$@'
3504 fi
3505
3506 add_cflags $extra_cflags
3507 add_cxxflags $extra_cxxflags
3508 add_asflags $extra_cflags
3509
3510 if test -n "$sysroot"; then
3511     case "$cc_type" in
3512         gcc|llvm_gcc|clang)
3513             add_cppflags --sysroot="$sysroot"
3514             add_ldflags --sysroot="$sysroot"
3515 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3516             add_cppflags -isysroot "$sysroot"
3517             add_ldflags -isysroot "$sysroot"
3518         ;;
3519         tms470)
3520             add_cppflags -I"$sysinclude"
3521             add_ldflags  --sysroot="$sysroot"
3522         ;;
3523     esac
3524 fi
3525
3526 if test "$cpu" = host; then
3527     enabled cross_compile &&
3528         die "--cpu=host makes no sense when cross-compiling."
3529
3530     case "$cc_type" in
3531         gcc|llvm_gcc)
3532             check_native(){
3533                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3534                 sed -n "/cc1.*$1=/{
3535                             s/.*$1=\\([^ ]*\\).*/\\1/
3536                             p
3537                             q
3538                         }" $TMPE
3539             }
3540             cpu=$(check_native -march || check_native -mcpu)
3541         ;;
3542     esac
3543
3544     test "${cpu:-host}" = host &&
3545         die "--cpu=host not supported with compiler $cc"
3546 fi
3547
3548 # Deal with common $arch aliases
3549 case "$arch" in
3550     aarch64|arm64)
3551         arch="aarch64"
3552     ;;
3553     arm*|iPad*|iPhone*)
3554         arch="arm"
3555     ;;
3556     mips*|IP*)
3557         arch="mips"
3558     ;;
3559     parisc*|hppa*)
3560         arch="parisc"
3561     ;;
3562     "Power Macintosh"|ppc*|powerpc*)
3563         arch="ppc"
3564     ;;
3565     s390|s390x)
3566         arch="s390"
3567     ;;
3568     sh4|sh)
3569         arch="sh4"
3570     ;;
3571     sun4u|sparc*)
3572         arch="sparc"
3573     ;;
3574     tilegx|tile-gx)
3575         arch="tilegx"
3576     ;;
3577     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3578         arch="x86"
3579     ;;
3580 esac
3581
3582 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3583 enable $arch
3584
3585 # Add processor-specific flags
3586 if enabled aarch64; then
3587
3588     case $cpu in
3589         armv*)
3590             cpuflags="-march=$cpu"
3591         ;;
3592         *)
3593             cpuflags="-mcpu=$cpu"
3594         ;;
3595     esac
3596
3597 elif enabled alpha; then
3598
3599     cpuflags="-mcpu=$cpu"
3600
3601 elif enabled arm; then
3602
3603     check_arm_arch() {
3604         check_cpp_condition stddef.h \
3605             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3606             $cpuflags
3607     }
3608
3609     probe_arm_arch() {
3610         if   check_arm_arch 4;        then echo armv4;
3611         elif check_arm_arch 4T;       then echo armv4t;
3612         elif check_arm_arch 5;        then echo armv5;
3613         elif check_arm_arch 5E;       then echo armv5e;
3614         elif check_arm_arch 5T;       then echo armv5t;
3615         elif check_arm_arch 5TE;      then echo armv5te;
3616         elif check_arm_arch 5TEJ;     then echo armv5te;
3617         elif check_arm_arch 6;        then echo armv6;
3618         elif check_arm_arch 6J;       then echo armv6j;
3619         elif check_arm_arch 6K;       then echo armv6k;
3620         elif check_arm_arch 6Z;       then echo armv6z;
3621         elif check_arm_arch 6ZK;      then echo armv6zk;
3622         elif check_arm_arch 6T2;      then echo armv6t2;
3623         elif check_arm_arch 7;        then echo armv7;
3624         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3625         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3626         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3627         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3628         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3629         fi
3630     }
3631
3632     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3633
3634     case $cpu in
3635         armv*)
3636             cpuflags="-march=$cpu"
3637             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3638         ;;
3639         *)
3640             cpuflags="-mcpu=$cpu"
3641             case $cpu in
3642                 cortex-a*)                               subarch=armv7a  ;;
3643                 cortex-r*)                               subarch=armv7r  ;;
3644                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3645                 arm11*)                                  subarch=armv6   ;;
3646                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3647                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3648                 *)                             subarch=$(probe_arm_arch) ;;
3649             esac
3650         ;;
3651     esac
3652
3653     case "$subarch" in
3654         armv5t*)    enable fast_clz                ;;
3655         armv[6-8]*)
3656             enable fast_clz
3657             disabled fast_unaligned || enable fast_unaligned
3658             ;;
3659     esac
3660
3661 elif enabled avr32; then
3662
3663     case $cpu in
3664         ap7[02]0[0-2])
3665             subarch="avr32_ap"
3666             cpuflags="-mpart=$cpu"
3667         ;;
3668         ap)
3669             subarch="avr32_ap"
3670             cpuflags="-march=$cpu"
3671         ;;
3672         uc3[ab]*)
3673             subarch="avr32_uc"
3674             cpuflags="-mcpu=$cpu"
3675         ;;
3676         uc)
3677             subarch="avr32_uc"
3678             cpuflags="-march=$cpu"
3679         ;;
3680     esac
3681
3682 elif enabled bfin; then
3683
3684     cpuflags="-mcpu=$cpu"
3685
3686 elif enabled mips; then
3687
3688     cpuflags="-march=$cpu"
3689
3690     case $cpu in
3691         24kc)
3692             disable mipsfpu
3693             disable mipsdspr1
3694             disable mipsdspr2
3695         ;;
3696         24kf*)
3697             disable mipsdspr1
3698             disable mipsdspr2
3699         ;;
3700         24kec|34kc|1004kc)
3701             disable mipsfpu
3702             disable mipsdspr2
3703         ;;
3704         24kef*|34kf*|1004kf*)
3705             disable mipsdspr2
3706         ;;
3707         74kc)
3708             disable mipsfpu
3709         ;;
3710     esac
3711
3712 elif enabled ppc; then
3713
3714     disable ldbrx
3715     disable vsx
3716
3717     case $(tolower $cpu) in
3718         601|ppc601|powerpc601)
3719             cpuflags="-mcpu=601"
3720             disable altivec
3721         ;;
3722         603*|ppc603*|powerpc603*)
3723             cpuflags="-mcpu=603"
3724             disable altivec
3725         ;;
3726         604*|ppc604*|powerpc604*)
3727             cpuflags="-mcpu=604"
3728             disable altivec
3729         ;;
3730         g3|75*|ppc75*|powerpc75*)
3731             cpuflags="-mcpu=750"
3732             disable altivec
3733         ;;
3734         g4|745*|ppc745*|powerpc745*)
3735             cpuflags="-mcpu=7450"
3736         ;;
3737         74*|ppc74*|powerpc74*)
3738             cpuflags="-mcpu=7400"
3739         ;;
3740         g5|970|ppc970|powerpc970)
3741             cpuflags="-mcpu=970"
3742         ;;
3743         power[3-8]*)
3744             cpuflags="-mcpu=$cpu"
3745         ;;
3746         cell)
3747             cpuflags="-mcpu=cell"
3748             enable ldbrx
3749         ;;
3750         e500mc)
3751             cpuflags="-mcpu=e500mc"
3752             disable altivec
3753         ;;
3754         e500v2)
3755             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3756             disable altivec
3757             disable dcbzl
3758         ;;
3759         e500)
3760             cpuflags="-mcpu=8540 -mhard-float"
3761             disable altivec
3762             disable dcbzl
3763         ;;
3764     esac
3765
3766 elif enabled sparc; then
3767
3768     case $cpu in
3769         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3770             cpuflags="-mcpu=$cpu"
3771         ;;
3772         ultrasparc*|niagara[234])
3773             cpuflags="-mcpu=$cpu"
3774         ;;
3775     esac
3776
3777 elif enabled x86; then
3778
3779     case $cpu in
3780         i[345]86|pentium)
3781             cpuflags="-march=$cpu"
3782             disable mmx
3783         ;;
3784         # targets that do NOT support nopl and conditional mov (cmov)
3785         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3786             cpuflags="-march=$cpu"
3787             disable i686
3788         ;;
3789         # targets that do support nopl and conditional mov (cmov)
3790         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3791         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3792             cpuflags="-march=$cpu"
3793             enable i686
3794             enable fast_cmov
3795         ;;
3796         # targets that do support conditional mov but on which it's slow
3797         pentium4|pentium4m|prescott|nocona)
3798             cpuflags="-march=$cpu"
3799             enable i686
3800             disable fast_cmov
3801         ;;
3802     esac
3803
3804 fi
3805
3806 if [ "$cpu" != generic ]; then
3807     add_cflags  $cpuflags
3808     add_asflags $cpuflags
3809 fi
3810
3811 # compiler sanity check
3812 check_exec <<EOF
3813 int main(void){ return 0; }
3814 EOF
3815 if test "$?" != 0; then
3816     echo "$cc is unable to create an executable file."
3817     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3818         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3819         echo "Only do this if you know what cross compiling means."
3820     fi
3821     die "C compiler test failed."
3822 fi
3823
3824 add_cppflags -D_ISOC99_SOURCE
3825 add_cxxflags -D__STDC_CONSTANT_MACROS
3826 check_cflags -std=c99
3827 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3828 #include <stdlib.h>
3829 EOF
3830 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3831 #include <stdlib.h>
3832 EOF
3833
3834 add_host_cppflags -D_ISOC99_SOURCE
3835 check_host_cflags -std=c99
3836 check_host_cflags -Wall
3837 check_host_cflags -O3
3838
3839 check_64bit(){
3840     arch32=$1
3841     arch64=$2
3842     expr=$3
3843     check_code cc "" "int test[2*($expr) - 1]" &&
3844         subarch=$arch64 || subarch=$arch32
3845 }
3846
3847 case "$arch" in
3848     aarch64|alpha|ia64)
3849         spic=$shared
3850     ;;
3851     mips)
3852         check_64bit mips mips64 '_MIPS_SIM > 1'
3853         spic=$shared
3854     ;;
3855     parisc)
3856         check_64bit parisc parisc64 'sizeof(void *) > 4'
3857         spic=$shared
3858     ;;
3859     ppc)
3860         check_64bit ppc ppc64 'sizeof(void *) > 4'
3861         spic=$shared
3862     ;;
3863     s390)
3864         check_64bit s390 s390x 'sizeof(void *) > 4'
3865         spic=$shared
3866     ;;
3867     sparc)
3868         check_64bit sparc sparc64 'sizeof(void *) > 4'
3869         spic=$shared
3870     ;;
3871     x86)
3872         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3873         if test "$subarch" = "x86_64"; then
3874             spic=$shared
3875         fi
3876     ;;
3877     ppc)
3878         check_cc <<EOF && subarch="ppc64"
3879         int test[(int)sizeof(char*) - 7];
3880 EOF
3881     ;;
3882 esac
3883
3884 enable $subarch
3885 enabled spic && enable_weak pic
3886
3887 # OS specific
3888 case $target_os in
3889     aix)
3890         SHFLAGS=-shared
3891         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3892         enabled shared && add_ldflags -Wl,-brtl
3893         ;;
3894     android)
3895         disable symver
3896         SLIB_INSTALL_NAME='$(SLIBNAME)'
3897         SLIB_INSTALL_LINKS=
3898         # soname not set on purpose
3899         SHFLAGS=-shared
3900         ;;
3901     haiku)
3902         prefix_default="/boot/common"
3903         network_extralibs="-lnetwork"
3904         host_libs=
3905         ;;
3906     sunos)
3907         SHFLAGS='-shared -Wl,-h,$$(@F)'
3908         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3909         network_extralibs="-lsocket -lnsl"
3910         # When using suncc to build, the Solaris linker will mark
3911         # an executable with each instruction set encountered by
3912         # the Solaris assembler.  As our libraries contain their own
3913         # guards for processor-specific code, instead suppress
3914         # generation of the HWCAPS ELF section on Solaris x86 only.
3915         enabled_all suncc x86 &&
3916             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3917             add_ldflags -Wl,-M,mapfile
3918         nm_default='nm -P -g'
3919         ;;
3920     netbsd)
3921         disable symver
3922         oss_indev_extralibs="-lossaudio"
3923         oss_outdev_extralibs="-lossaudio"
3924         enabled gcc || check_ldflags -Wl,-zmuldefs
3925         ;;
3926     openbsd|bitrig)
3927         disable symver
3928         SHFLAGS='-shared'
3929         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3930         SLIB_INSTALL_LINKS=
3931         oss_indev_extralibs="-lossaudio"
3932         oss_outdev_extralibs="-lossaudio"
3933         ;;
3934     dragonfly)
3935         disable symver
3936         ;;
3937     freebsd)
3938         ;;
3939     bsd/os)
3940         add_extralibs -lpoll -lgnugetopt
3941         strip="strip -d"
3942         ;;
3943     darwin)
3944         test "${as#*gas-preprocessor.pl}" != "$as" || gas="${gas:=gas-preprocessor.pl} ${as:=$cc}"
3945         enabled ppc && add_asflags -force_cpusubtype_ALL
3946         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3947         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3948         strip="${strip} -x"
3949         add_ldflags -Wl,-dynamic,-search_paths_first
3950         SLIBSUF=".dylib"
3951         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3952         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3953         objformat="macho"
3954         enabled x86_64 && objformat="macho64"
3955         enabled_any pic shared ||
3956             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3957         ;;
3958     mingw32*)
3959         if test $target_os = "mingw32ce"; then
3960             disable network
3961         else
3962             target_os=mingw32
3963         fi
3964         LIBTARGET=i386
3965         if enabled x86_64; then
3966             LIBTARGET="i386:x86-64"
3967         elif enabled arm; then
3968             LIBTARGET=arm-wince
3969         fi
3970         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3971         check_ldflags -Wl,--nxcompat
3972         check_ldflags -Wl,--dynamicbase
3973         shlibdir_default="$bindir_default"
3974         SLIBPREF=""
3975         SLIBSUF=".dll"
3976         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3977         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3978         dlltool="${cross_prefix}dlltool"
3979         if check_cmd lib.exe -list; then
3980             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3981             if enabled x86_64; then
3982                 LIBTARGET=x64
3983             fi
3984         elif check_cmd $dlltool --version; then
3985             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3986         fi
3987         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3988         SLIB_INSTALL_LINKS=
3989         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3990         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3991         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3992         objformat="win32"
3993         ranlib=:
3994         enable dos_paths
3995         ;;
3996     win32|win64)
3997         disable symver
3998         if enabled shared; then
3999             # Link to the import library instead of the normal static library
4000             # for shared libs.
4001             LD_LIB='%.lib'
4002             # Cannot build both shared and static libs with MSVC or icl.
4003             disable static
4004         fi
4005         shlibdir_default="$bindir_default"
4006         SLIBPREF=""
4007         SLIBSUF=".dll"
4008         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4009         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4010         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4011         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4012         SLIB_INSTALL_LINKS=
4013         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4014         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4015         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4016         objformat="win32"
4017         ranlib=:
4018         enable dos_paths
4019         ;;
4020     cygwin*)
4021         target_os=cygwin
4022         shlibdir_default="$bindir_default"
4023         SLIBPREF="cyg"
4024         SLIBSUF=".dll"
4025         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4026         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4027         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4028         SLIB_INSTALL_LINKS=
4029         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4030         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4031         objformat="win32"
4032         enable dos_paths
4033         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4034         ;;
4035     *-dos|freedos|opendos)
4036         network_extralibs="-lsocket"
4037         objformat="coff"
4038         enable dos_paths
4039         add_cppflags -U__STRICT_ANSI__
4040         ;;
4041     linux)
4042         enable dv1394
4043         ;;
4044     irix*)
4045         target_os=irix
4046         ranlib="echo ignoring ranlib"
4047         ;;
4048     os/2*)
4049         strip="lxlite -CS"
4050         ln_s="cp -f"
4051         objformat="aout"
4052         add_cppflags -D_GNU_SOURCE
4053         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4054         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4055         LIBSUF="_s.a"
4056         SLIBPREF=""
4057         SLIBSUF=".dll"
4058         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4059         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4060         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4061