Merge commit '0307cc2253e76772b1c645ac6117d08da87a147c'
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --fatal-warnings         fail if any configure warning is generated
82   --prefix=PREFIX          install in PREFIX [$prefix]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90   --enable-rpath           use rpath to allow installing libraries in paths
91                            not part of the dynamic linker search path
92
93 Licensing options:
94   --enable-gpl             allow use of GPL code, the resulting libs
95                            and binaries will be under GPL [no]
96   --enable-version3        upgrade (L)GPL to version 3 [no]
97   --enable-nonfree         allow use of nonfree code, the resulting libs
98                            and binaries will be unredistributable [no]
99
100 Configuration options:
101   --disable-static         do not build static libraries [no]
102   --enable-shared          build shared libraries [no]
103   --enable-small           optimize for size instead of speed
104   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
105   --enable-gray            enable full grayscale support (slower color)
106   --disable-swscale-alpha  disable alpha channel support in swscale
107   --disable-all            disable building components, libraries and programs
108   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
109   --enable-raise-major     increase major version numbers in sonames [no]
110
111 Program options:
112   --disable-programs       do not build command line programs
113   --disable-ffmpeg         disable ffmpeg build
114   --disable-ffplay         disable ffplay build
115   --disable-ffprobe        disable ffprobe build
116   --disable-ffserver       disable ffserver build
117
118 Documentation options:
119   --disable-doc            do not build documentation
120   --disable-htmlpages      do not build HTML documentation pages
121   --disable-manpages       do not build man documentation pages
122   --disable-podpages       do not build POD documentation pages
123   --disable-txtpages       do not build text documentation pages
124
125 Component options:
126   --disable-avdevice       disable libavdevice build
127   --disable-avcodec        disable libavcodec build
128   --disable-avformat       disable libavformat build
129   --disable-avutil         disable libavutil build
130   --disable-swresample     disable libswresample build
131   --disable-swscale        disable libswscale build
132   --disable-postproc       disable libpostproc build
133   --disable-avfilter       disable libavfilter build
134   --enable-avresample      enable libavresample build [no]
135   --disable-pthreads       disable pthreads [auto]
136   --disable-w32threads     disable Win32 threads [auto]
137   --disable-os2threads     disable OS/2 threads [auto]
138   --disable-network        disable network support [no]
139   --disable-dct            disable DCT code
140   --disable-dwt            disable DWT code
141   --disable-error-resilience disable error resilience code
142   --disable-lsp            disable LSP code
143   --disable-lzo            disable LZO decoder code
144   --disable-mdct           disable MDCT code
145   --disable-rdft           disable RDFT code
146   --disable-fft            disable FFT code
147
148 Hardware accelerators:
149   --disable-dxva2          disable DXVA2 code [autodetect]
150   --disable-vaapi          disable VAAPI code [autodetect]
151   --disable-vda            disable VDA code [autodetect]
152   --disable-vdpau          disable VDPAU code [autodetect]
153
154 Individual component options:
155   --disable-everything     disable all components listed below
156   --disable-encoder=NAME   disable encoder NAME
157   --enable-encoder=NAME    enable encoder NAME
158   --disable-encoders       disable all encoders
159   --disable-decoder=NAME   disable decoder NAME
160   --enable-decoder=NAME    enable decoder NAME
161   --disable-decoders       disable all decoders
162   --disable-hwaccel=NAME   disable hwaccel NAME
163   --enable-hwaccel=NAME    enable hwaccel NAME
164   --disable-hwaccels       disable all hwaccels
165   --disable-muxer=NAME     disable muxer NAME
166   --enable-muxer=NAME      enable muxer NAME
167   --disable-muxers         disable all muxers
168   --disable-demuxer=NAME   disable demuxer NAME
169   --enable-demuxer=NAME    enable demuxer NAME
170   --disable-demuxers       disable all demuxers
171   --enable-parser=NAME     enable parser NAME
172   --disable-parser=NAME    disable parser NAME
173   --disable-parsers        disable all parsers
174   --enable-bsf=NAME        enable bitstream filter NAME
175   --disable-bsf=NAME       disable bitstream filter NAME
176   --disable-bsfs           disable all bitstream filters
177   --enable-protocol=NAME   enable protocol NAME
178   --disable-protocol=NAME  disable protocol NAME
179   --disable-protocols      disable all protocols
180   --enable-indev=NAME      enable input device NAME
181   --disable-indev=NAME     disable input device NAME
182   --disable-indevs         disable input devices
183   --enable-outdev=NAME     enable output device NAME
184   --disable-outdev=NAME    disable output device NAME
185   --disable-outdevs        disable output devices
186   --disable-devices        disable all devices
187   --enable-filter=NAME     enable filter NAME
188   --disable-filter=NAME    disable filter NAME
189   --disable-filters        disable all filters
190
191 External library support:
192   --enable-avisynth        enable reading of AviSynth script files [no]
193   --disable-bzlib          disable bzlib [autodetect]
194   --enable-fontconfig      enable fontconfig
195   --enable-frei0r          enable frei0r video filtering
196   --enable-gnutls          enable gnutls [no]
197   --disable-iconv          disable iconv [autodetect]
198   --enable-ladspa          enable LADSPA audio filtering
199   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
200   --enable-libass          enable libass subtitles rendering [no]
201   --enable-libbluray       enable BluRay reading using libbluray [no]
202   --enable-libbs2b         enable bs2b DSP library [no]
203   --enable-libcaca         enable textual display using libcaca
204   --enable-libcelt         enable CELT decoding via libcelt [no]
205   --enable-libcdio         enable audio CD grabbing with libcdio
206   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
207                            and libraw1394 [no]
208   --enable-libfaac         enable AAC encoding via libfaac [no]
209   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
210   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
211   --enable-libfreetype     enable libfreetype [no]
212   --enable-libgme          enable Game Music Emu via libgme [no]
213   --enable-libgsm          enable GSM de/encoding via libgsm [no]
214   --enable-libiec61883     enable iec61883 via libiec61883 [no]
215   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
216   --enable-libmodplug      enable ModPlug via libmodplug [no]
217   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
218   --enable-libnut          enable NUT (de)muxing via libnut,
219                            native (de)muxer exists [no]
220   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
221   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
222   --enable-libopencv       enable video filtering via libopencv [no]
223   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
224   --enable-libopus         enable Opus de/encoding via libopus [no]
225   --enable-libpulse        enable Pulseaudio input via libpulse [no]
226   --enable-libquvi         enable quvi input via libquvi [no]
227   --enable-librtmp         enable RTMP[E] support via librtmp [no]
228   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
229   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
230   --enable-libsoxr         enable Include libsoxr resampling [no]
231   --enable-libspeex        enable Speex de/encoding via libspeex [no]
232   --enable-libssh          enable SFTP protocol via libssh [no]
233   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
234   --enable-libtheora       enable Theora encoding via libtheora [no]
235   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
236   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
237   --enable-libv4l2         enable libv4l2/v4l-utils [no]
238   --enable-libvidstab      enable video stabilization using vid.stab [no]
239   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
240   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
241   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
242                            native implementation exists [no]
243   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
244   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
245   --enable-libwebp         enable WebP encoding via libwebp [no]
246   --enable-libx264         enable H.264 encoding via x264 [no]
247   --enable-libx265         enable HEVC encoding via x265 [no]
248   --enable-libxavs         enable AVS encoding via xavs [no]
249   --enable-libxvid         enable Xvid encoding via xvidcore,
250                            native MPEG-4/Xvid encoder exists [no]
251   --enable-libzmq          enable message passing via libzmq [no]
252   --enable-libzvbi         enable teletext support via libzvbi [no]
253   --enable-decklink        enable Blackmagick DeckLink output [no]
254   --enable-openal          enable OpenAL 1.1 capture support [no]
255   --enable-opencl          enable OpenCL code
256   --enable-opengl          enable OpenGL rendering [no]
257   --enable-openssl         enable openssl [no]
258   --enable-x11grab         enable X11 grabbing [no]
259   --disable-xlib           disable xlib [autodetect]
260   --disable-zlib           disable zlib [autodetect]
261
262 Toolchain options:
263   --arch=ARCH              select architecture [$arch]
264   --cpu=CPU                select the minimum required CPU (affects
265                            instruction selection, may crash on older CPUs)
266   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
267   --progs-suffix=SUFFIX    program name suffix []
268   --enable-cross-compile   assume a cross-compiler is used
269   --sysroot=PATH           root of cross-build tree
270   --sysinclude=PATH        location of cross-build system headers
271   --target-os=OS           compiler targets OS [$target_os]
272   --target-exec=CMD        command to run executables on target
273   --target-path=DIR        path to view of build directory on target
274   --target-samples=DIR     path to samples directory on target
275   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
276   --toolchain=NAME         set tool defaults according to NAME
277   --nm=NM                  use nm tool NM [$nm_default]
278   --ar=AR                  use archive tool AR [$ar_default]
279   --as=AS                  use assembler AS [$as_default]
280   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
281   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
282   --cc=CC                  use C compiler CC [$cc_default]
283   --cxx=CXX                use C compiler CXX [$cxx_default]
284   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
285   --ld=LD                  use linker LD [$ld_default]
286   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
287   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
288   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
289   --doxygen=DOXYGEN        use DOXYGEN to generate API doc [$doxygen_default]
290   --host-cc=HOSTCC         use host C compiler HOSTCC
291   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
292   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
293   --host-ld=HOSTLD         use host linker HOSTLD
294   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
295   --host-libs=HLIBS        use libs HLIBS when linking for host
296   --host-os=OS             compiler host OS [$target_os]
297   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
298   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
299   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
300   --extra-libs=ELIBS       add ELIBS [$ELIBS]
301   --extra-version=STRING   version string suffix []
302   --optflags=OPTFLAGS      override optimization-related compiler flags
303   --build-suffix=SUFFIX    library name suffix []
304   --enable-pic             build position-independent code
305   --enable-thumb           compile for Thumb instruction set
306   --enable-lto             use link-time optimization
307
308 Advanced options (experts only):
309   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
310   --disable-symver         disable symbol versioning
311   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
312   --disable-safe-bitstream-reader
313                            disable buffer boundary checking in bitreaders
314                            (faster, but may crash)
315   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
316   --enable-sram            allow use of on-chip SRAM
317   --sws-max-filter-size=N  the max filter size swscale uses [$sws_max_filter_size_default]
318
319 Optimization options (experts only):
320   --disable-asm            disable all assembly optimizations
321   --disable-altivec        disable AltiVec optimizations
322   --disable-amd3dnow       disable 3DNow! optimizations
323   --disable-amd3dnowext    disable 3DNow! extended optimizations
324   --disable-mmx            disable MMX optimizations
325   --disable-mmxext         disable MMXEXT optimizations
326   --disable-sse            disable SSE optimizations
327   --disable-sse2           disable SSE2 optimizations
328   --disable-sse3           disable SSE3 optimizations
329   --disable-ssse3          disable SSSE3 optimizations
330   --disable-sse4           disable SSE4 optimizations
331   --disable-sse42          disable SSE4.2 optimizations
332   --disable-avx            disable AVX optimizations
333   --disable-xop            disable XOP optimizations
334   --disable-fma3           disable FMA3 optimizations
335   --disable-fma4           disable FMA4 optimizations
336   --disable-avx2           disable AVX2 optimizations
337   --disable-armv5te        disable armv5te optimizations
338   --disable-armv6          disable armv6 optimizations
339   --disable-armv6t2        disable armv6t2 optimizations
340   --disable-vfp            disable VFP optimizations
341   --disable-neon           disable NEON optimizations
342   --disable-inline-asm     disable use of inline assembly
343   --disable-yasm           disable use of nasm/yasm assembly
344   --disable-mips32r2       disable MIPS32R2 optimizations
345   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
346   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
347   --disable-mipsfpu        disable floating point MIPS optimizations
348   --disable-fast-unaligned consider unaligned accesses slow
349
350 Developer options (useful when working on FFmpeg itself):
351   --disable-debug          disable debugging symbols
352   --enable-debug=LEVEL     set the debug level [$debuglevel]
353   --disable-optimizations  disable compiler optimizations
354   --enable-extra-warnings  enable more compiler warnings
355   --disable-stripping      disable stripping of executables and shared libraries
356   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
357                            2 causes a slowdown at runtime.
358   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
359   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
360                            leaks and errors, using the specified valgrind binary.
361                            Cannot be combined with --target-exec
362   --enable-ftrapv          Trap arithmetic overflows
363   --samples=PATH           location of test samples for FATE, if not set use
364                            \$FATE_SAMPLES at make invocation time.
365   --enable-neon-clobber-test check NEON registers for clobbering (should be
366                            used only for debugging purposes)
367   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
368                            should be used only for debugging purposes)
369   --enable-random          randomly enable/disable components
370   --disable-random
371   --enable-random=LIST     randomly enable/disable specific components or
372   --disable-random=LIST    component groups. LIST is a comma-separated list
373                            of NAME[:PROB] entries where NAME is a component
374                            (group) and PROB the probability associated with
375                            NAME (default 0.5).
376   --random-seed=VALUE      seed value for --enable/disable-random
377
378 NOTE: Object files are built at the place where configure is launched.
379 EOF
380   exit 0
381 }
382
383 quotes='""'
384
385 log(){
386     echo "$@" >> $logfile
387 }
388
389 log_file(){
390     log BEGIN $1
391     pr -n -t $1 >> $logfile
392     log END $1
393 }
394
395 echolog(){
396     log "$@"
397     echo "$@"
398 }
399
400 warn(){
401     log "WARNING: $*"
402     WARNINGS="${WARNINGS}WARNING: $*\n"
403 }
404
405 die(){
406     echolog "$@"
407     cat <<EOF
408
409 If you think configure made a mistake, make sure you are using the latest
410 version from Git.  If the latest version fails, report the problem to the
411 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
412 EOF
413     if disabled logging; then
414         cat <<EOF
415 Rerun configure with logging enabled (do not use --disable-logging), and
416 include the log this produces with your report.
417 EOF
418     else
419         cat <<EOF
420 Include the log file "$logfile" produced by configure as this will help
421 solve the problem.
422 EOF
423     fi
424     exit 1
425 }
426
427 # Avoid locale weirdness, besides we really just want to translate ASCII.
428 toupper(){
429     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
430 }
431
432 tolower(){
433     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
434 }
435
436 c_escape(){
437     echo "$*" | sed 's/["\\]/\\\0/g'
438 }
439
440 sh_quote(){
441     v=$(echo "$1" | sed "s/'/'\\\\''/g")
442     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
443     echo "$v"
444 }
445
446 cleanws(){
447     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\\r//g'
448 }
449
450 filter(){
451     pat=$1
452     shift
453     for v; do
454         eval "case $v in $pat) echo $v ;; esac"
455     done
456 }
457
458 filter_out(){
459     pat=$1
460     shift
461     for v; do
462         eval "case $v in $pat) ;; *) echo $v ;; esac"
463     done
464 }
465
466 map(){
467     m=$1
468     shift
469     for v; do eval $m; done
470 }
471
472 add_suffix(){
473     suffix=$1
474     shift
475     for v; do echo ${v}${suffix}; done
476 }
477
478 set_all(){
479     value=$1
480     shift
481     for var in $*; do
482         eval $var=$value
483     done
484 }
485
486 set_weak(){
487     value=$1
488     shift
489     for var; do
490         eval : \${$var:=$value}
491     done
492 }
493
494 sanitize_var_name(){
495     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
496 }
497
498 set_safe(){
499     var=$1
500     shift
501     eval $(sanitize_var_name "$var")='$*'
502 }
503
504 get_safe(){
505     eval echo \$$(sanitize_var_name "$1")
506 }
507
508 pushvar(){
509     for pvar in $*; do
510         eval level=\${${pvar}_level:=0}
511         eval ${pvar}_${level}="\$$pvar"
512         eval ${pvar}_level=$(($level+1))
513     done
514 }
515
516 popvar(){
517     for pvar in $*; do
518         eval level=\${${pvar}_level:-0}
519         test $level = 0 && continue
520         eval level=$(($level-1))
521         eval $pvar="\${${pvar}_${level}}"
522         eval ${pvar}_level=$level
523         eval unset ${pvar}_${level}
524     done
525 }
526
527 enable(){
528     set_all yes $*
529 }
530
531 disable(){
532     set_all no $*
533 }
534
535 enable_weak(){
536     set_weak yes $*
537 }
538
539 disable_weak(){
540     set_weak no $*
541 }
542
543 enable_safe(){
544     for var; do
545         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
546     done
547 }
548
549 disable_safe(){
550     for var; do
551         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
552     done
553 }
554
555 do_enable_deep(){
556     for var; do
557         enabled $var && continue
558         eval sel="\$${var}_select"
559         eval sgs="\$${var}_suggest"
560         pushvar var sgs
561         enable_deep $sel
562         popvar sgs
563         enable_deep_weak $sgs
564         popvar var
565     done
566 }
567
568 enable_deep(){
569     do_enable_deep $*
570     enable $*
571 }
572
573 enable_deep_weak(){
574     for var; do
575         disabled $var && continue
576         pushvar var
577         do_enable_deep $var
578         popvar var
579         enable_weak $var
580     done
581 }
582
583 enabled(){
584     test "${1#!}" = "$1" && op== || op=!=
585     eval test "x\$${1#!}" $op "xyes"
586 }
587
588 disabled(){
589     test "${1#!}" = "$1" && op== || op=!=
590     eval test "x\$${1#!}" $op "xno"
591 }
592
593 enabled_all(){
594     for opt; do
595         enabled $opt || return 1
596     done
597 }
598
599 disabled_all(){
600     for opt; do
601         disabled $opt || return 1
602     done
603 }
604
605 enabled_any(){
606     for opt; do
607         enabled $opt && return 0
608     done
609 }
610
611 disabled_any(){
612     for opt; do
613         disabled $opt && return 0
614     done
615     return 1
616 }
617
618 set_default(){
619     for opt; do
620         eval : \${$opt:=\$${opt}_default}
621     done
622 }
623
624 is_in(){
625     value=$1
626     shift
627     for var in $*; do
628         [ $var = $value ] && return 0
629     done
630     return 1
631 }
632
633 do_check_deps(){
634     for cfg; do
635         cfg="${cfg#!}"
636         enabled ${cfg}_checking && die "Circular dependency for $cfg."
637         disabled ${cfg}_checking && continue
638         enable ${cfg}_checking
639         append allopts $cfg
640
641         eval dep_all="\$${cfg}_deps"
642         eval dep_any="\$${cfg}_deps_any"
643         eval dep_sel="\$${cfg}_select"
644         eval dep_sgs="\$${cfg}_suggest"
645         eval dep_ifa="\$${cfg}_if"
646         eval dep_ifn="\$${cfg}_if_any"
647
648         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
649         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
650         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
651
652         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
653         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
654         enabled_all  $dep_all || disable $cfg
655         enabled_any  $dep_any || disable $cfg
656         disabled_any $dep_sel && disable $cfg
657
658         if enabled $cfg; then
659             enable_deep $dep_sel
660             enable_deep_weak $dep_sgs
661         fi
662
663         disable ${cfg}_checking
664     done
665 }
666
667 check_deps(){
668     unset allopts
669
670     do_check_deps "$@"
671
672     for cfg in $allopts; do
673         enabled $cfg || continue
674         eval dep_extralibs="\$${cfg}_extralibs"
675         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
676     done
677 }
678
679 print_config(){
680     pfx=$1
681     files=$2
682     shift 2
683     map 'eval echo "$v \${$v:-no}"' "$@" |
684     awk "BEGIN { split(\"$files\", files) }
685         {
686             c = \"$pfx\" toupper(\$1);
687             v = \$2;
688             sub(/yes/, 1, v);
689             sub(/no/,  0, v);
690             for (f in files) {
691                 file = files[f];
692                 if (file ~ /\\.h\$/) {
693                     printf(\"#define %s %d\\n\", c, v) >>file;
694                 } else if (file ~ /\\.asm\$/) {
695                     printf(\"%%define %s %d\\n\", c, v) >>file;
696                 } else if (file ~ /\\.mak\$/) {
697                     n = -v ? \"\" : \"!\";
698                     printf(\"%s%s=yes\\n\", n, c) >>file;
699                 } else if (file ~ /\\.texi\$/) {
700                     pre = -v ? \"\" : \"@c \";
701                     yesno = \$2;
702                     c2 = tolower(c);
703                     gsub(/_/, \"-\", c2);
704                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
705                 }
706             }
707         }"
708 }
709
710 print_enabled(){
711     suf=$1
712     shift
713     for v; do
714         enabled $v && printf "%s\n" ${v%$suf};
715     done
716 }
717
718 append(){
719     var=$1
720     shift
721     eval "$var=\"\$$var $*\""
722 }
723
724 prepend(){
725     var=$1
726     shift
727     eval "$var=\"$* \$$var\""
728 }
729
730 unique(){
731     var=$1
732     uniq_list=""
733     for tok in $(eval echo \$$var); do
734         uniq_list="$(filter_out $tok $uniq_list) $tok"
735     done
736     eval "$var=\"${uniq_list}\""
737 }
738
739 add_cppflags(){
740     append CPPFLAGS "$@"
741 }
742
743 add_cflags(){
744     append CFLAGS $($cflags_filter "$@")
745 }
746
747 add_cxxflags(){
748     append CXXFLAGS $($cflags_filter "$@")
749 }
750
751 add_asflags(){
752     append ASFLAGS $($asflags_filter "$@")
753 }
754
755 add_ldflags(){
756     append LDFLAGS $($ldflags_filter "$@")
757 }
758
759 add_stripflags(){
760     append ASMSTRIPFLAGS "$@"
761 }
762
763 add_extralibs(){
764     prepend extralibs $($ldflags_filter "$@")
765 }
766
767 add_host_cppflags(){
768     append host_cppflags "$@"
769 }
770
771 add_host_cflags(){
772     append host_cflags $($host_cflags_filter "$@")
773 }
774
775 add_host_ldflags(){
776     append host_ldflags $($host_ldflags_filter "$@")
777 }
778
779 add_compat(){
780     append compat_objs $1
781     shift
782     map 'add_cppflags -D$v' "$@"
783 }
784
785 check_cmd(){
786     log "$@"
787     "$@" >> $logfile 2>&1
788 }
789
790 check_stat(){
791     log check_stat "$@"
792     stat "$1" >> $logfile 2>&1
793 }
794
795 cc_o(){
796     eval printf '%s\\n' $CC_O
797 }
798
799 cc_e(){
800     eval printf '%s\\n' $CC_E
801 }
802
803 check_cc(){
804     log check_cc "$@"
805     cat > $TMPC
806     log_file $TMPC
807     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
808 }
809
810 check_cxx(){
811     log check_cxx "$@"
812     cat > $TMPCPP
813     log_file $TMPCPP
814     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
815 }
816
817 check_oc(){
818     log check_oc "$@"
819     cat > $TMPM
820     log_file $TMPM
821     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
822 }
823
824 check_cpp(){
825     log check_cpp "$@"
826     cat > $TMPC
827     log_file $TMPC
828     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
829 }
830
831 as_o(){
832     eval printf '%s\\n' $AS_O
833 }
834
835 check_as(){
836     log check_as "$@"
837     cat > $TMPS
838     log_file $TMPS
839     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
840 }
841
842 check_inline_asm(){
843     log check_inline_asm "$@"
844     name="$1"
845     code="$2"
846     shift 2
847     disable $name
848     check_cc "$@" <<EOF && enable $name
849 void foo(void){ __asm__ volatile($code); }
850 EOF
851 }
852
853 check_insn(){
854     log check_insn "$@"
855     check_inline_asm ${1}_inline "\"$2\""
856     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
857 }
858
859 check_yasm(){
860     log check_yasm "$@"
861     echo "$1" > $TMPS
862     log_file $TMPS
863     shift 1
864     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
865 }
866
867 ld_o(){
868     eval printf '%s\\n' $LD_O
869 }
870
871 check_ld(){
872     log check_ld "$@"
873     type=$1
874     shift 1
875     flags=$(filter_out '-l*|*.so' $@)
876     libs=$(filter '-l*|*.so' $@)
877     check_$type $($cflags_filter $flags) || return
878     flags=$($ldflags_filter $flags)
879     libs=$($ldflags_filter $libs)
880     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
881 }
882
883 print_include(){
884     hdr=$1
885     test "${hdr%.h}" = "${hdr}" &&
886         echo "#include $hdr"    ||
887         echo "#include <$hdr>"
888 }
889
890 check_code(){
891     log check_code "$@"
892     check=$1
893     headers=$2
894     code=$3
895     shift 3
896     {
897         for hdr in $headers; do
898             print_include $hdr
899         done
900         echo "int main(void) { $code; return 0; }"
901     } | check_$check "$@"
902 }
903
904 check_cppflags(){
905     log check_cppflags "$@"
906     check_cc "$@" <<EOF && append CPPFLAGS "$@"
907 int x;
908 EOF
909 }
910
911 test_cflags(){
912     log test_cflags "$@"
913     set -- $($cflags_filter "$@")
914     check_cc "$@" <<EOF
915 int x;
916 EOF
917 }
918
919 check_cflags(){
920     log check_cflags "$@"
921     test_cflags "$@" && add_cflags "$@"
922 }
923
924 check_cxxflags(){
925     log check_cxxflags "$@"
926     set -- $($cflags_filter "$@")
927     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
928 int x;
929 EOF
930 }
931
932 test_ldflags(){
933     log test_ldflags "$@"
934     check_ld "cc" "$@" <<EOF
935 int main(void){ return 0; }
936 EOF
937 }
938
939 check_ldflags(){
940     log check_ldflags "$@"
941     test_ldflags "$@" && add_ldflags "$@"
942 }
943
944 test_stripflags(){
945     log test_stripflags "$@"
946     # call check_cc to get a fresh TMPO
947     check_cc <<EOF
948 int main(void) { return 0; }
949 EOF
950     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
951 }
952
953 check_stripflags(){
954     log check_stripflags "$@"
955     test_stripflags "$@" && add_stripflags "$@"
956 }
957
958 check_header(){
959     log check_header "$@"
960     header=$1
961     shift
962     disable_safe $header
963     check_cpp "$@" <<EOF && enable_safe $header
964 #include <$header>
965 int x;
966 EOF
967 }
968
969 check_header_oc(){
970     log check_header_oc "$@"
971     rm -f -- "$TMPO"
972     header=$1
973     shift
974     disable_safe $header
975     {
976        echo "#include <$header>"
977        echo "int main(void) { return 0; }"
978     } | check_oc && check_stat "$TMPO" && enable_safe $headers
979 }
980
981 check_func(){
982     log check_func "$@"
983     func=$1
984     shift
985     disable $func
986     check_ld "cc" "$@" <<EOF && enable $func
987 extern int $func();
988 int main(void){ $func(); }
989 EOF
990 }
991
992 check_mathfunc(){
993     log check_mathfunc "$@"
994     func=$1
995     narg=$2
996     shift 2
997     test $narg = 2 && args="f, g" || args="f"
998     disable $func
999     check_ld "cc" "$@" <<EOF && enable $func
1000 #include <math.h>
1001 float foo(float f, float g) { return $func($args); }
1002 int main(void){ return (int) foo; }
1003 EOF
1004 }
1005
1006 check_func_headers(){
1007     log check_func_headers "$@"
1008     headers=$1
1009     funcs=$2
1010     shift 2
1011     {
1012         for hdr in $headers; do
1013             print_include $hdr
1014         done
1015         for func in $funcs; do
1016             echo "long check_$func(void) { return (long) $func; }"
1017         done
1018         echo "int main(void) { return 0; }"
1019     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1020 }
1021
1022 check_class_headers_cpp(){
1023     log check_class_headers_cpp "$@"
1024     headers=$1
1025     classes=$2
1026     shift 2
1027     {
1028         for hdr in $headers; do
1029             echo "#include <$hdr>"
1030         done
1031         echo "int main(void) { "
1032         i=1
1033         for class in $classes; do
1034             echo "$class obj$i;"
1035             i=$(expr $i + 1)
1036         done
1037         echo "return 0; }"
1038     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1039 }
1040
1041 check_cpp_condition(){
1042     log check_cpp_condition "$@"
1043     header=$1
1044     condition=$2
1045     shift 2
1046     check_cpp "$@" <<EOF
1047 #include <$header>
1048 #if !($condition)
1049 #error "unsatisfied condition: $condition"
1050 #endif
1051 EOF
1052 }
1053
1054 check_lib(){
1055     log check_lib "$@"
1056     header="$1"
1057     func="$2"
1058     shift 2
1059     check_header $header && check_func $func "$@" && add_extralibs "$@"
1060 }
1061
1062 check_lib2(){
1063     log check_lib2 "$@"
1064     headers="$1"
1065     funcs="$2"
1066     shift 2
1067     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1068 }
1069
1070 check_lib_cpp(){
1071     log check_lib_cpp "$@"
1072     headers="$1"
1073     classes="$2"
1074     shift 2
1075     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1076 }
1077
1078 check_pkg_config(){
1079     log check_pkg_config "$@"
1080     pkgandversion="$1"
1081     pkg="${1%% *}"
1082     headers="$2"
1083     funcs="$3"
1084     shift 3
1085     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1086     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1087     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1088     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1089         set_safe ${pkg}_cflags $pkg_cflags   &&
1090         set_safe ${pkg}_libs   $pkg_libs
1091 }
1092
1093 check_exec(){
1094     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1095 }
1096
1097 check_exec_crash(){
1098     code=$(cat)
1099
1100     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1101     # are safe but may not be available everywhere.  Thus we use
1102     # raise(SIGTERM) instead.  The check is run in a subshell so we
1103     # can redirect the "Terminated" message from the shell.  SIGBUS
1104     # is not defined by standard C so it is used conditionally.
1105
1106     (check_exec "$@") >> $logfile 2>&1 <<EOF
1107 #include <signal.h>
1108 static void sighandler(int sig){
1109     raise(SIGTERM);
1110 }
1111 int foo(void){
1112     $code
1113 }
1114 int (*func_ptr)(void) = foo;
1115 int main(void){
1116     signal(SIGILL, sighandler);
1117     signal(SIGFPE, sighandler);
1118     signal(SIGSEGV, sighandler);
1119 #ifdef SIGBUS
1120     signal(SIGBUS, sighandler);
1121 #endif
1122     return func_ptr();
1123 }
1124 EOF
1125 }
1126
1127 check_type(){
1128     log check_type "$@"
1129     headers=$1
1130     type=$2
1131     shift 2
1132     disable_safe "$type"
1133     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1134 }
1135
1136 check_struct(){
1137     log check_struct "$@"
1138     headers=$1
1139     struct=$2
1140     member=$3
1141     shift 3
1142     disable_safe "${struct}_${member}"
1143     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1144         enable_safe "${struct}_${member}"
1145 }
1146
1147 check_builtin(){
1148     log check_builtin "$@"
1149     name=$1
1150     headers=$2
1151     builtin=$3
1152     shift 3
1153     disable "$name"
1154     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1155 }
1156
1157 check_compile_assert(){
1158     log check_compile_assert "$@"
1159     name=$1
1160     headers=$2
1161     condition=$3
1162     shift 3
1163     disable "$name"
1164     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1165 }
1166
1167 require(){
1168     name="$1"
1169     header="$2"
1170     func="$3"
1171     shift 3
1172     check_lib $header $func "$@" || die "ERROR: $name not found"
1173 }
1174
1175 require2(){
1176     name="$1"
1177     headers="$2"
1178     func="$3"
1179     shift 3
1180     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1181 }
1182
1183 require_cpp(){
1184     name="$1"
1185     headers="$2"
1186     classes="$3"
1187     shift 3
1188     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1189 }
1190
1191 require_pkg_config(){
1192     pkg="$1"
1193     check_pkg_config "$@" || die "ERROR: $pkg not found"
1194     add_cflags    $(get_safe ${pkg}_cflags)
1195     add_extralibs $(get_safe ${pkg}_libs)
1196 }
1197
1198 require_libfreetype(){
1199     log require_libfreetype "$@"
1200     pkg="freetype2"
1201     check_cmd $pkg_config --exists --print-errors $pkg \
1202       || die "ERROR: $pkg not found"
1203     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1204     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1205     {
1206         echo "#include <ft2build.h>"
1207         echo "#include FT_FREETYPE_H"
1208         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1209         echo "int main(void) { return 0; }"
1210     } | check_ld "cc" $pkg_cflags $pkg_libs \
1211       && set_safe ${pkg}_cflags $pkg_cflags \
1212       && set_safe ${pkg}_libs   $pkg_libs \
1213       || die "ERROR: $pkg not found"
1214     add_cflags    $(get_safe ${pkg}_cflags)
1215     add_extralibs $(get_safe ${pkg}_libs)
1216 }
1217
1218 hostcc_e(){
1219     eval printf '%s\\n' $HOSTCC_E
1220 }
1221
1222 hostcc_o(){
1223     eval printf '%s\\n' $HOSTCC_O
1224 }
1225
1226 check_host_cc(){
1227     log check_host_cc "$@"
1228     cat > $TMPC
1229     log_file $TMPC
1230     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1231 }
1232
1233 check_host_cpp(){
1234     log check_host_cpp "$@"
1235     cat > $TMPC
1236     log_file $TMPC
1237     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1238 }
1239
1240 check_host_cppflags(){
1241     log check_host_cppflags "$@"
1242     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1243 int x;
1244 EOF
1245 }
1246
1247 check_host_cflags(){
1248     log check_host_cflags "$@"
1249     set -- $($host_cflags_filter "$@")
1250     check_host_cc "$@" <<EOF && append host_cflags "$@"
1251 int x;
1252 EOF
1253 }
1254
1255 check_host_cpp_condition(){
1256     log check_host_cpp_condition "$@"
1257     header=$1
1258     condition=$2
1259     shift 2
1260     check_host_cpp "$@" <<EOF
1261 #include <$header>
1262 #if !($condition)
1263 #error "unsatisfied condition: $condition"
1264 #endif
1265 EOF
1266 }
1267
1268 apply(){
1269     file=$1
1270     shift
1271     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1272 }
1273
1274 cp_if_changed(){
1275     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1276     mkdir -p "$(dirname $2)"
1277     $cp_f "$1" "$2"
1278 }
1279
1280 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1281 # system-dependent things.
1282
1283 COMPONENT_LIST="
1284     bsfs
1285     decoders
1286     demuxers
1287     encoders
1288     filters
1289     hwaccels
1290     indevs
1291     muxers
1292     outdevs
1293     parsers
1294     protocols
1295 "
1296
1297 EXAMPLE_LIST="
1298     avio_reading_example
1299     decoding_encoding_example
1300     demuxing_decoding_example
1301     filter_audio_example
1302     filtering_audio_example
1303     filtering_video_example
1304     metadata_example
1305     muxing_example
1306     remuxing_example
1307     resampling_audio_example
1308     scaling_video_example
1309     transcode_aac_example
1310     transcoding_example
1311 "
1312
1313 EXTERNAL_LIBRARY_LIST="
1314     avisynth
1315     bzlib
1316     crystalhd
1317     decklink
1318     frei0r
1319     gnutls
1320     iconv
1321     ladspa
1322     libaacplus
1323     libass
1324     libbluray
1325     libbs2b
1326     libcaca
1327     libcdio
1328     libcelt
1329     libdc1394
1330     libfaac
1331     libfdk_aac
1332     libflite
1333     libfontconfig
1334     libfreetype
1335     libgme
1336     libgsm
1337     libiec61883
1338     libilbc
1339     libmodplug
1340     libmp3lame
1341     libnut
1342     libopencore_amrnb
1343     libopencore_amrwb
1344     libopencv
1345     libopenjpeg
1346     libopus
1347     libpulse
1348     libquvi
1349     librtmp
1350     libschroedinger
1351     libshine
1352     libsoxr
1353     libspeex
1354     libssh
1355     libstagefright_h264
1356     libtheora
1357     libtwolame
1358     libutvideo
1359     libv4l2
1360     libvidstab
1361     libvo_aacenc
1362     libvo_amrwbenc
1363     libvorbis
1364     libvpx
1365     libwavpack
1366     libwebp
1367     libx264
1368     libx265
1369     libxavs
1370     libxvid
1371     libzmq
1372     libzvbi
1373     openal
1374     opencl
1375     opengl
1376     openssl
1377     x11grab
1378     xlib
1379     zlib
1380 "
1381
1382 DOCUMENT_LIST="
1383     doc
1384     htmlpages
1385     manpages
1386     podpages
1387     txtpages
1388 "
1389
1390 FEATURE_LIST="
1391     ftrapv
1392     gray
1393     hardcoded_tables
1394     runtime_cpudetect
1395     safe_bitstream_reader
1396     shared
1397     small
1398     sram
1399     static
1400     swscale_alpha
1401 "
1402
1403 HWACCEL_LIST="
1404     dxva2
1405     vaapi
1406     vda
1407     vdpau
1408     xvmc
1409 "
1410
1411 LIBRARY_LIST="
1412     avcodec
1413     avdevice
1414     avfilter
1415     avformat
1416     avresample
1417     avutil
1418     postproc
1419     swresample
1420     swscale
1421 "
1422
1423 LICENSE_LIST="
1424     gpl
1425     nonfree
1426     version3
1427 "
1428
1429 PROGRAM_LIST="
1430     ffplay
1431     ffprobe
1432     ffserver
1433     ffmpeg
1434 "
1435
1436 SUBSYSTEM_LIST="
1437     dct
1438     dwt
1439     error_resilience
1440     fast_unaligned
1441     fft
1442     lsp
1443     lzo
1444     mdct
1445     network
1446     rdft
1447 "
1448
1449 CONFIG_LIST="
1450     $COMPONENT_LIST
1451     $DOCUMENT_LIST
1452     $EXAMPLE_LIST
1453     $EXTERNAL_LIBRARY_LIST
1454     $FEATURE_LIST
1455     $HWACCEL_LIST
1456     $LICENSE_LIST
1457     $LIBRARY_LIST
1458     $PROGRAM_LIST
1459     $SUBSYSTEM_LIST
1460     fontconfig
1461     incompatible_libav_abi
1462     memalign_hack
1463     memory_poisoning
1464     neon_clobber_test
1465     pic
1466     pod2man
1467     raise_major
1468     thumb
1469     xmm_clobber_test
1470 "
1471
1472 THREADS_LIST="
1473     pthreads
1474     os2threads
1475     w32threads
1476 "
1477
1478 ATOMICS_LIST="
1479     atomics_gcc
1480     atomics_suncc
1481     atomics_win32
1482 "
1483
1484 ARCH_LIST="
1485     aarch64
1486     alpha
1487     arm
1488     avr32
1489     avr32_ap
1490     avr32_uc
1491     bfin
1492     ia64
1493     m68k
1494     mips
1495     mips64
1496     parisc
1497     ppc
1498     ppc64
1499     s390
1500     sh4
1501     sparc
1502     sparc64
1503     tilegx
1504     tilepro
1505     tomi
1506     x86
1507     x86_32
1508     x86_64
1509 "
1510
1511 ARCH_EXT_LIST_ARM="
1512     armv5te
1513     armv6
1514     armv6t2
1515     armv8
1516     neon
1517     vfp
1518     vfpv3
1519 "
1520
1521 ARCH_EXT_LIST_MIPS="
1522     mipsfpu
1523     mips32r2
1524     mipsdspr1
1525     mipsdspr2
1526 "
1527
1528 ARCH_EXT_LIST_X86_SIMD="
1529     amd3dnow
1530     amd3dnowext
1531     avx
1532     avx2
1533     fma3
1534     fma4
1535     mmx
1536     mmxext
1537     sse
1538     sse2
1539     sse3
1540     sse4
1541     sse42
1542     ssse3
1543     xop
1544 "
1545
1546 ARCH_EXT_LIST_PPC="
1547     altivec
1548     dcbzl
1549     ldbrx
1550     ppc4xx
1551     vsx
1552 "
1553
1554 ARCH_EXT_LIST_X86="
1555     $ARCH_EXT_LIST_X86_SIMD
1556     cpunop
1557     i686
1558 "
1559
1560 ARCH_EXT_LIST="
1561     $ARCH_EXT_LIST_ARM
1562     $ARCH_EXT_LIST_PPC
1563     $ARCH_EXT_LIST_X86
1564     $ARCH_EXT_LIST_MIPS
1565     loongson
1566 "
1567
1568 ARCH_FEATURES="
1569     aligned_stack
1570     fast_64bit
1571     fast_clz
1572     fast_cmov
1573     local_aligned_8
1574     local_aligned_16
1575     local_aligned_32
1576 "
1577
1578 BUILTIN_LIST="
1579     atomic_cas_ptr
1580     machine_rw_barrier
1581     MemoryBarrier
1582     mm_empty
1583     rdtsc
1584     sarestart
1585     sync_val_compare_and_swap
1586 "
1587 HAVE_LIST_CMDLINE="
1588     inline_asm
1589     symver
1590     yasm
1591 "
1592
1593 HAVE_LIST_PUB="
1594     bigendian
1595     fast_unaligned
1596     incompatible_libav_abi
1597 "
1598
1599 HEADERS_LIST="
1600     alsa_asoundlib_h
1601     altivec_h
1602     arpa_inet_h
1603     asm_types_h
1604     cdio_paranoia_h
1605     cdio_paranoia_paranoia_h
1606     CL_cl_h
1607     dev_bktr_ioctl_bt848_h
1608     dev_bktr_ioctl_meteor_h
1609     dev_ic_bt8xx_h
1610     dev_video_bktr_ioctl_bt848_h
1611     dev_video_meteor_ioctl_meteor_h
1612     direct_h
1613     dlfcn_h
1614     dxva_h
1615     ES2_gl_h
1616     gsm_h
1617     io_h
1618     mach_mach_time_h
1619     machine_ioctl_bt848_h
1620     machine_ioctl_meteor_h
1621     malloc_h
1622     openjpeg_1_5_openjpeg_h
1623     OpenGL_gl3_h
1624     poll_h
1625     sndio_h
1626     soundcard_h
1627     sys_mman_h
1628     sys_param_h
1629     sys_resource_h
1630     sys_select_h
1631     sys_soundcard_h
1632     sys_time_h
1633     sys_un_h
1634     sys_videoio_h
1635     termios_h
1636     unistd_h
1637     windows_h
1638     winsock2_h
1639 "
1640
1641 MATH_FUNCS="
1642     atanf
1643     atan2f
1644     cbrt
1645     cbrtf
1646     cosf
1647     exp2
1648     exp2f
1649     expf
1650     fminf
1651     isinf
1652     isnan
1653     ldexpf
1654     llrint
1655     llrintf
1656     log2
1657     log2f
1658     log10f
1659     lrint
1660     lrintf
1661     powf
1662     rint
1663     round
1664     roundf
1665     sinf
1666     trunc
1667     truncf
1668 "
1669
1670 SYSTEM_FUNCS="
1671     access
1672     aligned_malloc
1673     clock_gettime
1674     closesocket
1675     CommandLineToArgvW
1676     CoTaskMemFree
1677     CryptGenRandom
1678     dlopen
1679     fcntl
1680     flt_lim
1681     fork
1682     getaddrinfo
1683     gethrtime
1684     getopt
1685     GetProcessAffinityMask
1686     GetProcessMemoryInfo
1687     GetProcessTimes
1688     getrusage
1689     getservbyport
1690     GetSystemTimeAsFileTime
1691     gettimeofday
1692     glob
1693     glXGetProcAddress
1694     inet_aton
1695     isatty
1696     jack_port_get_latency_range
1697     kbhit
1698     localtime_r
1699     lzo1x_999_compress
1700     mach_absolute_time
1701     MapViewOfFile
1702     memalign
1703     mkstemp
1704     mmap
1705     mprotect
1706     nanosleep
1707     PeekNamedPipe
1708     posix_memalign
1709     pthread_cancel
1710     sched_getaffinity
1711     SetConsoleTextAttribute
1712     setmode
1713     setrlimit
1714     Sleep
1715     strerror_r
1716     sysconf
1717     sysctl
1718     usleep
1719     VirtualAlloc
1720     wglGetProcAddress
1721 "
1722
1723 TOOLCHAIN_FEATURES="
1724     as_dn_directive
1725     as_func
1726     asm_mod_q
1727     attribute_may_alias
1728     attribute_packed
1729     ebp_available
1730     ebx_available
1731     gnu_as
1732     gnu_windres
1733     ibm_asm
1734     inline_asm_labels
1735     inline_asm_nonlocal_labels
1736     inline_asm_direct_symbol_refs
1737     pragma_deprecated
1738     rsync_contimeout
1739     symver_asm_label
1740     symver_gnu_asm
1741     vfp_args
1742     xform_asm
1743     xmm_clobbers
1744 "
1745
1746 TYPES_LIST="
1747     socklen_t
1748     struct_addrinfo
1749     struct_group_source_req
1750     struct_ip_mreq_source
1751     struct_ipv6_mreq
1752     struct_pollfd
1753     struct_rusage_ru_maxrss
1754     struct_sctp_event_subscribe
1755     struct_sockaddr_in6
1756     struct_sockaddr_sa_len
1757     struct_sockaddr_storage
1758     struct_stat_st_mtim_tv_nsec
1759     struct_v4l2_frmivalenum_discrete
1760 "
1761
1762 HAVE_LIST="
1763     $ARCH_EXT_LIST
1764     $(add_suffix _external $ARCH_EXT_LIST)
1765     $(add_suffix _inline   $ARCH_EXT_LIST)
1766     $ARCH_FEATURES
1767     $ATOMICS_LIST
1768     $BUILTIN_LIST
1769     $HAVE_LIST_CMDLINE
1770     $HAVE_LIST_PUB
1771     $HEADERS_LIST
1772     $MATH_FUNCS
1773     $SYSTEM_FUNCS
1774     $THREADS_LIST
1775     $TOOLCHAIN_FEATURES
1776     $TYPES_LIST
1777     atomics_native
1778     dos_paths
1779     dxva2api_cobj
1780     dxva2_lib
1781     libc_msvcrt
1782     libdc1394_1
1783     libdc1394_2
1784     makeinfo
1785     perl
1786     pod2man
1787     sdl
1788     texi2html
1789     threads
1790     vdpau_x11
1791     xlib
1792 "
1793
1794 # options emitted with CONFIG_ prefix but not available on the command line
1795 CONFIG_EXTRA="
1796     aandcttables
1797     ac3dsp
1798     audio_frame_queue
1799     audiodsp
1800     blockdsp
1801     bswapdsp
1802     cabac
1803     dsputil
1804     dvprofile
1805     exif
1806     fdctdsp
1807     frame_thread_encoder
1808     gcrypt
1809     golomb
1810     gplv3
1811     h263dsp
1812     h264chroma
1813     h264dsp
1814     h264pred
1815     h264qpel
1816     hpeldsp
1817     huffman
1818     huffyuvdsp
1819     huffyuvencdsp
1820     idctdsp
1821     intrax8
1822     lgplv3
1823     llauddsp
1824     llviddsp
1825     lpc
1826     mpeg_er
1827     mpegaudio
1828     mpegaudiodsp
1829     mpegvideo
1830     mpegvideoenc
1831     nettle
1832     qpeldsp
1833     rangecoder
1834     riffdec
1835     riffenc
1836     rtpdec
1837     rtpenc_chain
1838     sinewin
1839     tpeldsp
1840     videodsp
1841     vp3dsp
1842 "
1843
1844 CMDLINE_SELECT="
1845     $ARCH_EXT_LIST
1846     $CONFIG_LIST
1847     $HAVE_LIST_CMDLINE
1848     $THREADS_LIST
1849     asm
1850     cross_compile
1851     debug
1852     extra_warnings
1853     logging
1854     lto
1855     optimizations
1856     rpath
1857     stripping
1858 "
1859
1860 PATHS_LIST="
1861     bindir
1862     datadir
1863     docdir
1864     incdir
1865     libdir
1866     mandir
1867     prefix
1868     shlibdir
1869 "
1870
1871 CMDLINE_SET="
1872     $PATHS_LIST
1873     ar
1874     arch
1875     as
1876     assert_level
1877     build_suffix
1878     cc
1879     cpu
1880     cross_prefix
1881     cxx
1882     dep_cc
1883     doxygen
1884     extra_version
1885     gas
1886     host_cc
1887     host_cflags
1888     host_ld
1889     host_ldflags
1890     host_libs
1891     host_os
1892     install
1893     ld
1894     logfile
1895     malloc_prefix
1896     nm
1897     optflags
1898     pkg_config
1899     pkg_config_flags
1900     progs_suffix
1901     random_seed
1902     ranlib
1903     samples
1904     strip
1905     sws_max_filter_size
1906     sysinclude
1907     sysroot
1908     target_exec
1909     target_os
1910     target_path
1911     target_samples
1912     tempprefix
1913     toolchain
1914     valgrind
1915     yasmexe
1916 "
1917
1918 CMDLINE_APPEND="
1919     extra_cflags
1920     extra_cxxflags
1921     host_cppflags
1922 "
1923
1924 # code dependency declarations
1925
1926 # architecture extensions
1927
1928 armv5te_deps="arm"
1929 armv6_deps="arm"
1930 armv6t2_deps="arm"
1931 armv8_deps="aarch64"
1932 neon_deps_any="aarch64 arm"
1933 vfp_deps_any="aarch64 arm"
1934 vfpv3_deps="vfp"
1935
1936 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1937
1938 mipsfpu_deps="mips"
1939 mips32r2_deps="mips"
1940 mipsdspr1_deps="mips"
1941 mipsdspr2_deps="mips"
1942
1943 altivec_deps="ppc"
1944 ppc4xx_deps="ppc"
1945 vsx_deps="ppc"
1946
1947 cpunop_deps="i686"
1948 x86_64_select="i686"
1949 x86_64_suggest="fast_cmov"
1950
1951 amd3dnow_deps="mmx"
1952 amd3dnowext_deps="amd3dnow"
1953 i686_deps="x86"
1954 mmx_deps="x86"
1955 mmxext_deps="mmx"
1956 sse_deps="mmxext"
1957 sse2_deps="sse"
1958 sse3_deps="sse2"
1959 ssse3_deps="sse3"
1960 sse4_deps="ssse3"
1961 sse42_deps="sse4"
1962 avx_deps="sse42"
1963 xop_deps="avx"
1964 fma3_deps="avx"
1965 fma4_deps="avx"
1966 avx2_deps="avx"
1967
1968 mmx_external_deps="yasm"
1969 mmx_inline_deps="inline_asm"
1970 mmx_suggest="mmx_external mmx_inline"
1971
1972 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1973     eval dep=\$${ext}_deps
1974     eval ${ext}_external_deps='"${dep}_external"'
1975     eval ${ext}_inline_deps='"${dep}_inline"'
1976     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1977 done
1978
1979 aligned_stack_if_any="aarch64 ppc x86"
1980 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1981 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1982 fast_unaligned_if_any="aarch64 ppc x86"
1983
1984 need_memalign="altivec neon sse"
1985
1986 # system capabilities
1987
1988 symver_if_any="symver_asm_label symver_gnu_asm"
1989
1990 # threading support
1991 atomics_gcc_if="sync_val_compare_and_swap"
1992 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1993 atomics_win32_if="MemoryBarrier"
1994 atomics_native_if_any="$ATOMICS_LIST"
1995 w32threads_deps="atomics_native"
1996 threads_if_any="$THREADS_LIST"
1997
1998 # subsystems
1999 dct_select="rdft"
2000 dsputil_select="fdctdsp idctdsp"
2001 error_resilience_select="dsputil"
2002 frame_thread_encoder_deps="encoders threads"
2003 intrax8_select="error_resilience"
2004 mdct_select="fft"
2005 rdft_select="fft"
2006 mpeg_er_select="error_resilience"
2007 mpegaudio_select="mpegaudiodsp"
2008 mpegaudiodsp_select="dct"
2009 mpegvideo_select="blockdsp dsputil h264chroma hpeldsp idctdsp videodsp"
2010 mpegvideoenc_select="dsputil mpegvideo qpeldsp"
2011
2012 # decoders / encoders
2013 aac_decoder_select="mdct sinewin"
2014 aac_encoder_select="audio_frame_queue mdct sinewin"
2015 aac_latm_decoder_select="aac_decoder aac_latm_parser"
2016 ac3_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2017 ac3_fixed_decoder_select="ac3_parser ac3dsp bswapdsp mdct"
2018 ac3_encoder_select="ac3dsp audiodsp dsputil mdct"
2019 ac3_fixed_encoder_select="ac3dsp audiodsp dsputil mdct"
2020 aic_decoder_select="golomb idctdsp"
2021 alac_encoder_select="lpc"
2022 als_decoder_select="bswapdsp"
2023 amrnb_decoder_select="lsp"
2024 amrwb_decoder_select="lsp"
2025 amv_decoder_select="sp5x_decoder exif"
2026 amv_encoder_select="aandcttables mpegvideoenc"
2027 ape_decoder_select="bswapdsp llauddsp"
2028 asv1_decoder_select="blockdsp bswapdsp idctdsp"
2029 asv1_encoder_select="bswapdsp dsputil fdctdsp"
2030 asv2_decoder_select="blockdsp bswapdsp idctdsp"
2031 asv2_encoder_select="bswapdsp dsputil fdctdsp"
2032 atrac1_decoder_select="mdct sinewin"
2033 atrac3_decoder_select="mdct"
2034 atrac3p_decoder_select="mdct sinewin"
2035 avrn_decoder_select="exif"
2036 bink_decoder_select="blockdsp hpeldsp"
2037 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
2038 binkaudio_rdft_decoder_select="mdct rdft sinewin"
2039 cavs_decoder_select="blockdsp golomb h264chroma idctdsp qpeldsp videodsp"
2040 cllc_decoder_select="bswapdsp"
2041 comfortnoise_encoder_select="lpc"
2042 cook_decoder_select="audiodsp mdct sinewin"
2043 cscd_decoder_select="lzo"
2044 cscd_decoder_suggest="zlib"
2045 dca_decoder_select="mdct"
2046 dirac_decoder_select="dsputil dwt golomb videodsp"
2047 dnxhd_decoder_select="blockdsp idctdsp"
2048 dnxhd_encoder_select="aandcttables blockdsp dsputil fdctdsp idctdsp mpegvideoenc"
2049 dvvideo_decoder_select="dvprofile idctdsp"
2050 dvvideo_encoder_select="dsputil dvprofile fdctdsp"
2051 dxa_decoder_select="zlib"
2052 eac3_decoder_select="ac3_decoder"
2053 eac3_encoder_select="ac3_encoder"
2054 eamad_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpegvideo"
2055 eatgq_decoder_select="aandcttables"
2056 eatqi_decoder_select="aandcttables blockdsp bswapdsp idctdsp mpeg1video_decoder"
2057 exr_decoder_select="zlib"
2058 ffv1_decoder_select="golomb rangecoder"
2059 ffv1_encoder_select="rangecoder"
2060 ffvhuff_decoder_select="huffyuv_decoder"
2061 ffvhuff_encoder_select="huffyuv_encoder"
2062 fic_decoder_select="golomb"
2063 flac_decoder_select="golomb"
2064 flac_encoder_select="bswapdsp golomb lpc"
2065 flashsv_decoder_select="zlib"
2066 flashsv_encoder_select="zlib"
2067 flashsv2_encoder_select="zlib"
2068 flashsv2_decoder_select="zlib"
2069 flv_decoder_select="h263_decoder"
2070 flv_encoder_select="h263_encoder"
2071 fourxm_decoder_select="blockdsp bswapdsp"
2072 fraps_decoder_select="bswapdsp huffman"
2073 g2m_decoder_select="blockdsp idctdsp zlib"
2074 g729_decoder_select="audiodsp"
2075 h261_decoder_select="mpeg_er mpegvideo"
2076 h261_encoder_select="aandcttables mpegvideoenc"
2077 h263_decoder_select="error_resilience h263_parser h263dsp mpeg_er mpegvideo qpeldsp"
2078 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2079 h263i_decoder_select="h263_decoder"
2080 h263p_encoder_select="h263_encoder"
2081 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2082 h264_decoder_suggest="error_resilience"
2083 hevc_decoder_select="bswapdsp cabac golomb videodsp"
2084 huffyuv_decoder_select="bswapdsp huffyuvdsp llviddsp"
2085 huffyuv_encoder_select="bswapdsp huffman huffyuvencdsp llviddsp"
2086 iac_decoder_select="imc_decoder"
2087 imc_decoder_select="bswapdsp fft mdct sinewin"
2088 indeo3_decoder_select="hpeldsp"
2089 interplay_video_decoder_select="hpeldsp"
2090 jpegls_decoder_select="golomb mjpeg_decoder"
2091 jpegls_encoder_select="golomb"
2092 jv_decoder_select="blockdsp"
2093 lagarith_decoder_select="huffyuvdsp"
2094 ljpeg_encoder_select="aandcttables idctdsp"
2095 loco_decoder_select="golomb"
2096 mdec_decoder_select="blockdsp idctdsp mpegvideo"
2097 metasound_decoder_select="lsp mdct sinewin"
2098 mimic_decoder_select="blockdsp bswapdsp hpeldsp idctdsp"
2099 mjpeg_decoder_select="blockdsp hpeldsp exif idctdsp"
2100 mjpeg_encoder_select="aandcttables mpegvideoenc"
2101 mjpegb_decoder_select="mjpeg_decoder"
2102 mlp_decoder_select="mlp_parser"
2103 motionpixels_decoder_select="bswapdsp"
2104 mp1_decoder_select="mpegaudio"
2105 mp1float_decoder_select="mpegaudio"
2106 mp2_decoder_select="mpegaudio"
2107 mp2float_decoder_select="mpegaudio"
2108 mp3_decoder_select="mpegaudio"
2109 mp3adu_decoder_select="mpegaudio"
2110 mp3adufloat_decoder_select="mpegaudio"
2111 mp3float_decoder_select="mpegaudio"
2112 mp3on4_decoder_select="mpegaudio"
2113 mp3on4float_decoder_select="mpegaudio"
2114 mpc7_decoder_select="bswapdsp mpegaudiodsp"
2115 mpc8_decoder_select="mpegaudiodsp"
2116 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2117 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2118 mpeg1video_decoder_select="error_resilience mpeg_er mpegvideo"
2119 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2120 mpeg2video_decoder_select="error_resilience mpeg_er mpegvideo"
2121 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2122 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2123 mpeg4_encoder_select="h263_encoder"
2124 msmpeg4v1_decoder_select="h263_decoder"
2125 msmpeg4v2_decoder_select="h263_decoder"
2126 msmpeg4v2_encoder_select="h263_encoder"
2127 msmpeg4v3_decoder_select="h263_decoder"
2128 msmpeg4v3_encoder_select="h263_encoder"
2129 mss2_decoder_select="error_resilience mpeg_er qpeldsp vc1_decoder"
2130 mxpeg_decoder_select="mjpeg_decoder"
2131 nellymoser_decoder_select="mdct sinewin"
2132 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2133 nuv_decoder_select="idctdsp lzo"
2134 on2avc_decoder_select="mdct"
2135 opus_decoder_deps="swresample"
2136 png_decoder_select="zlib"
2137 png_encoder_select="huffyuvencdsp zlib"
2138 prores_decoder_select="blockdsp idctdsp"
2139 prores_encoder_select="fdctdsp"
2140 qcelp_decoder_select="lsp"
2141 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2142 ra_144_encoder_select="audio_frame_queue lpc audiodsp"
2143 ra_144_decoder_select="audiodsp"
2144 ralf_decoder_select="golomb"
2145 rawvideo_decoder_select="dsputil"
2146 rtjpeg_decoder_select="dsputil"
2147 rv10_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2148 rv10_encoder_select="h263_encoder"
2149 rv20_decoder_select="error_resilience h263_decoder h263dsp mpeg_er"
2150 rv20_encoder_select="h263_encoder"
2151 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2152 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpeg_er mpegvideo videodsp"
2153 shorten_decoder_select="golomb"
2154 sipr_decoder_select="lsp"
2155 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
2156 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
2157 sonic_decoder_select="golomb rangecoder"
2158 sonic_encoder_select="golomb rangecoder"
2159 sonic_ls_encoder_select="golomb rangecoder"
2160 sp5x_decoder_select="mjpeg_decoder"
2161 svq1_decoder_select="hpeldsp"
2162 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
2163 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2164 svq3_decoder_suggest="zlib"
2165 tak_decoder_select="audiodsp"
2166 theora_decoder_select="vp3_decoder"
2167 thp_decoder_select="mjpeg_decoder"
2168 tiff_decoder_suggest="zlib"
2169 tiff_encoder_suggest="zlib"
2170 truehd_decoder_select="mlp_parser"
2171 truemotion2_decoder_select="bswapdsp"
2172 truespeech_decoder_select="bswapdsp"
2173 tscc_decoder_select="zlib"
2174 twinvq_decoder_select="mdct lsp sinewin"
2175 utvideo_decoder_select="bswapdsp"
2176 utvideo_encoder_select="bswapdsp huffman huffyuvencdsp"
2177 vble_decoder_select="huffyuvdsp"
2178 vc1_decoder_select="blockdsp error_resilience h263_decoder h264chroma h264qpel intrax8 mpeg_er qpeldsp"
2179 vc1image_decoder_select="vc1_decoder"
2180 vorbis_decoder_select="mdct"
2181 vorbis_encoder_select="mdct"
2182 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2183 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2184 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2185 vp6a_decoder_select="vp6_decoder"
2186 vp6f_decoder_select="vp6_decoder"
2187 vp7_decoder_select="h264pred videodsp"
2188 vp8_decoder_select="h264pred videodsp"
2189 vp9_decoder_select="videodsp vp9_parser"
2190 webp_decoder_select="vp8_decoder"
2191 wmalossless_decoder_select="llauddsp"
2192 wmapro_decoder_select="mdct sinewin"
2193 wmav1_decoder_select="mdct sinewin"
2194 wmav1_encoder_select="mdct sinewin"
2195 wmav2_decoder_select="mdct sinewin"
2196 wmav2_encoder_select="mdct sinewin"
2197 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2198 wmv1_decoder_select="h263_decoder"
2199 wmv1_encoder_select="h263_encoder"
2200 wmv2_decoder_select="blockdsp h263_decoder idctdsp intrax8 videodsp"
2201 wmv2_encoder_select="h263_encoder"
2202 wmv3_decoder_select="vc1_decoder"
2203 wmv3image_decoder_select="wmv3_decoder"
2204 zerocodec_decoder_select="zlib"
2205 zlib_decoder_select="zlib"
2206 zlib_encoder_select="zlib"
2207 zmbv_decoder_select="zlib"
2208 zmbv_encoder_select="zlib"
2209
2210 # hardware accelerators
2211 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2212 dxva2_deps="dxva2api_h"
2213 vaapi_deps="va_va_h"
2214 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2215 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2216 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2217 xvmc_deps="X11_extensions_XvMClib_h"
2218
2219 h263_vaapi_hwaccel_deps="vaapi"
2220 h263_vaapi_hwaccel_select="h263_decoder"
2221 h263_vdpau_hwaccel_deps="vdpau"
2222 h263_vdpau_hwaccel_select="h263_decoder"
2223 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2224 h264_dxva2_hwaccel_deps="dxva2"
2225 h264_dxva2_hwaccel_select="h264_decoder"
2226 h264_vaapi_hwaccel_deps="vaapi"
2227 h264_vaapi_hwaccel_select="h264_decoder"
2228 h264_vda_decoder_deps="vda"
2229 h264_vda_decoder_select="h264_decoder"
2230 h264_vda_hwaccel_deps="vda"
2231 h264_vda_hwaccel_select="h264_decoder"
2232 h264_vda_old_hwaccel_deps="vda"
2233 h264_vda_old_hwaccel_select="h264_decoder"
2234 h264_vdpau_decoder_deps="vdpau"
2235 h264_vdpau_decoder_select="h264_decoder"
2236 h264_vdpau_hwaccel_deps="vdpau"
2237 h264_vdpau_hwaccel_select="h264_decoder"
2238 mpeg_vdpau_decoder_deps="vdpau"
2239 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2240 mpeg_xvmc_hwaccel_deps="xvmc"
2241 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2242 mpeg1_vdpau_decoder_deps="vdpau"
2243 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2244 mpeg1_vdpau_hwaccel_deps="vdpau"
2245 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2246 mpeg1_xvmc_hwaccel_deps="xvmc"
2247 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2248 mpeg2_crystalhd_decoder_select="crystalhd"
2249 mpeg2_dxva2_hwaccel_deps="dxva2"
2250 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2251 mpeg2_vaapi_hwaccel_deps="vaapi"
2252 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2253 mpeg2_vdpau_hwaccel_deps="vdpau"
2254 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2255 mpeg2_xvmc_hwaccel_deps="xvmc"
2256 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2257 mpeg4_crystalhd_decoder_select="crystalhd"
2258 mpeg4_vaapi_hwaccel_deps="vaapi"
2259 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2260 mpeg4_vdpau_decoder_deps="vdpau"
2261 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2262 mpeg4_vdpau_hwaccel_deps="vdpau"
2263 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2264 msmpeg4_crystalhd_decoder_select="crystalhd"
2265 vc1_crystalhd_decoder_select="crystalhd"
2266 vc1_dxva2_hwaccel_deps="dxva2"
2267 vc1_dxva2_hwaccel_select="vc1_decoder"
2268 vc1_vaapi_hwaccel_deps="vaapi"
2269 vc1_vaapi_hwaccel_select="vc1_decoder"
2270 vc1_vdpau_decoder_deps="vdpau"
2271 vc1_vdpau_decoder_select="vc1_decoder"
2272 vc1_vdpau_hwaccel_deps="vdpau"
2273 vc1_vdpau_hwaccel_select="vc1_decoder"
2274 wmv3_crystalhd_decoder_select="crystalhd"
2275 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2276 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2277 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2278 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2279
2280 # parsers
2281 h264_parser_select="h264_decoder"
2282 hevc_parser_select="hevc_decoder"
2283 mpegvideo_parser_select="mpegvideo"
2284 mpeg4video_parser_select="error_resilience h263dsp mpeg_er mpegvideo qpeldsp"
2285 vc1_parser_select="mpegvideo vc1_decoder"
2286
2287 # external libraries
2288 libaacplus_encoder_deps="libaacplus"
2289 libcelt_decoder_deps="libcelt"
2290 libfaac_encoder_deps="libfaac"
2291 libfaac_encoder_select="audio_frame_queue"
2292 libfdk_aac_decoder_deps="libfdk_aac"
2293 libfdk_aac_encoder_deps="libfdk_aac"
2294 libfdk_aac_encoder_select="audio_frame_queue"
2295 libgme_demuxer_deps="libgme"
2296 libgsm_decoder_deps="libgsm"
2297 libgsm_encoder_deps="libgsm"
2298 libgsm_ms_decoder_deps="libgsm"
2299 libgsm_ms_encoder_deps="libgsm"
2300 libilbc_decoder_deps="libilbc"
2301 libilbc_encoder_deps="libilbc"
2302 libmodplug_demuxer_deps="libmodplug"
2303 libmp3lame_encoder_deps="libmp3lame"
2304 libmp3lame_encoder_select="audio_frame_queue"
2305 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2306 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2307 libopencore_amrnb_encoder_select="audio_frame_queue"
2308 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2309 libopenjpeg_decoder_deps="libopenjpeg"
2310 libopenjpeg_encoder_deps="libopenjpeg"
2311 libopus_decoder_deps="libopus"
2312 libopus_encoder_deps="libopus"
2313 libopus_encoder_select="audio_frame_queue"
2314 libquvi_demuxer_deps="libquvi"
2315 libschroedinger_decoder_deps="libschroedinger"
2316 libschroedinger_encoder_deps="libschroedinger"
2317 libshine_encoder_deps="libshine"
2318 libshine_encoder_select="audio_frame_queue"
2319 libspeex_decoder_deps="libspeex"
2320 libspeex_encoder_deps="libspeex"
2321 libspeex_encoder_select="audio_frame_queue"
2322 libstagefright_h264_decoder_deps="libstagefright_h264"
2323 libtheora_encoder_deps="libtheora"
2324 libtwolame_encoder_deps="libtwolame"
2325 libvo_aacenc_encoder_deps="libvo_aacenc"
2326 libvo_aacenc_encoder_select="audio_frame_queue"
2327 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2328 libvorbis_decoder_deps="libvorbis"
2329 libvorbis_encoder_deps="libvorbis"
2330 libvorbis_encoder_select="audio_frame_queue"
2331 libvpx_vp8_decoder_deps="libvpx"
2332 libvpx_vp8_encoder_deps="libvpx"
2333 libvpx_vp9_decoder_deps="libvpx"
2334 libvpx_vp9_encoder_deps="libvpx"
2335 libwavpack_encoder_deps="libwavpack"
2336 libwebp_encoder_deps="libwebp"
2337 libx264_encoder_deps="libx264"
2338 libx264rgb_encoder_deps="libx264"
2339 libx265_encoder_deps="libx265"
2340 libxavs_encoder_deps="libxavs"
2341 libxvid_encoder_deps="libxvid"
2342 libutvideo_decoder_deps="libutvideo"
2343 libutvideo_encoder_deps="libutvideo"
2344 libzvbi_teletext_decoder_deps="libzvbi"
2345
2346 # demuxers / muxers
2347 ac3_demuxer_select="ac3_parser"
2348 asf_demuxer_select="riffdec"
2349 asf_muxer_select="riffenc"
2350 asf_stream_muxer_select="asf_muxer"
2351 avi_demuxer_select="riffdec exif"
2352 avi_muxer_select="riffenc"
2353 avisynth_demuxer_deps="avisynth"
2354 avisynth_demuxer_select="riffdec"
2355 caf_demuxer_select="riffdec"
2356 dirac_demuxer_select="dirac_parser"
2357 dts_demuxer_select="dca_parser"
2358 dtshd_demuxer_select="dca_parser"
2359 dv_demuxer_select="dvprofile"
2360 dv_muxer_select="dvprofile"
2361 dxa_demuxer_select="riffdec"
2362 eac3_demuxer_select="ac3_parser"
2363 f4v_muxer_select="mov_muxer"
2364 flac_demuxer_select="flac_parser"
2365 hds_muxer_select="flv_muxer"
2366 hls_muxer_select="mpegts_muxer"
2367 image2_alias_pix_demuxer_select="image2_demuxer"
2368 image2_brender_pix_demuxer_select="image2_demuxer"
2369 ipod_muxer_select="mov_muxer"
2370 ismv_muxer_select="mov_muxer"
2371 libnut_demuxer_deps="libnut"
2372 libnut_muxer_deps="libnut"
2373 matroska_audio_muxer_select="matroska_muxer"
2374 matroska_demuxer_select="riffdec"
2375 matroska_demuxer_suggest="bzlib lzo zlib"
2376 matroska_muxer_select="riffenc"
2377 mmf_muxer_select="riffenc"
2378 mov_demuxer_select="riffdec"
2379 mov_demuxer_suggest="zlib"
2380 mov_muxer_select="riffenc rtpenc_chain"
2381 mp3_demuxer_select="mpegaudio_parser"
2382 mp4_muxer_select="mov_muxer"
2383 mpegts_muxer_select="adts_muxer latm_muxer"
2384 mpegtsraw_demuxer_select="mpegts_demuxer"
2385 mxf_d10_muxer_select="mxf_muxer"
2386 nut_muxer_select="riffenc"
2387 nuv_demuxer_select="riffdec"
2388 ogg_demuxer_select="golomb"
2389 psp_muxer_select="mov_muxer"
2390 rtp_demuxer_select="sdp_demuxer"
2391 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2392 rtsp_demuxer_select="http_protocol rtpdec"
2393 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2394 sap_demuxer_select="sdp_demuxer"
2395 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2396 sdp_demuxer_select="rtpdec"
2397 smoothstreaming_muxer_select="ismv_muxer"
2398 spdif_muxer_select="aac_parser"
2399 tak_demuxer_select="tak_parser"
2400 tg2_muxer_select="mov_muxer"
2401 tgp_muxer_select="mov_muxer"
2402 vobsub_demuxer_select="mpegps_demuxer"
2403 w64_demuxer_select="wav_demuxer"
2404 w64_muxer_select="wav_muxer"
2405 wav_demuxer_select="riffdec"
2406 wav_muxer_select="riffenc"
2407 webm_muxer_select="riffenc"
2408 wtv_demuxer_select="riffdec"
2409 wtv_muxer_select="riffenc"
2410 xmv_demuxer_select="riffdec"
2411 xwma_demuxer_select="riffdec"
2412
2413 # indevs / outdevs
2414 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2415 alsa_outdev_deps="alsa_asoundlib_h"
2416 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2417 avfoundation_indev_select="avfoundation"
2418 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2419 caca_outdev_deps="libcaca"
2420 decklink_outdev_deps="decklink pthreads"
2421 decklink_outdev_extralibs="-lstdc++"
2422 dshow_indev_deps="IBaseFilter"
2423 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2424 dv1394_indev_deps="dv1394"
2425 dv1394_indev_select="dv_demuxer"
2426 fbdev_indev_deps="linux_fb_h"
2427 fbdev_outdev_deps="linux_fb_h"
2428 gdigrab_indev_deps="CreateDIBSection"
2429 gdigrab_indev_extralibs="-lgdi32"
2430 gdigrab_indev_select="bmp_decoder"
2431 iec61883_indev_deps="libiec61883"
2432 jack_indev_deps="jack_jack_h sem_timedwait"
2433 lavfi_indev_deps="avfilter"
2434 libcdio_indev_deps="libcdio"
2435 libdc1394_indev_deps="libdc1394"
2436 libv4l2_indev_deps="libv4l2"
2437 openal_indev_deps="openal"
2438 opengl_outdev_deps="opengl"
2439 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2440 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2441 pulse_indev_deps="libpulse"
2442 pulse_outdev_deps="libpulse"
2443 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2444 qtkit_indev_select="qtkit"
2445 sdl_outdev_deps="sdl"
2446 sndio_indev_deps="sndio_h"
2447 sndio_outdev_deps="sndio_h"
2448 v4l_indev_deps="linux_videodev_h"
2449 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2450 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2451 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2452 vfwcap_indev_extralibs="-lavicap32"
2453 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2454 xv_outdev_extralibs="-lXv -lX11 -lXext"
2455 x11grab_indev_deps="x11grab"
2456
2457 # protocols
2458 bluray_protocol_deps="libbluray"
2459 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2460 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2461 ffrtmpcrypt_protocol_select="tcp_protocol"
2462 ffrtmphttp_protocol_deps="!librtmp_protocol"
2463 ffrtmphttp_protocol_select="http_protocol"
2464 ftp_protocol_select="tcp_protocol"
2465 gopher_protocol_select="network"
2466 http_protocol_select="tcp_protocol"
2467 httpproxy_protocol_select="tcp_protocol"
2468 https_protocol_select="tls_protocol"
2469 librtmp_protocol_deps="librtmp"
2470 librtmpe_protocol_deps="librtmp"
2471 librtmps_protocol_deps="librtmp"
2472 librtmpt_protocol_deps="librtmp"
2473 librtmpte_protocol_deps="librtmp"
2474 libssh_protocol_deps="libssh"
2475 mmsh_protocol_select="http_protocol"
2476 mmst_protocol_select="network"
2477 rtmp_protocol_deps="!librtmp_protocol"
2478 rtmp_protocol_select="tcp_protocol"
2479 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2480 rtmps_protocol_deps="!librtmp_protocol"
2481 rtmps_protocol_select="tls_protocol"
2482 rtmpt_protocol_select="ffrtmphttp_protocol"
2483 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2484 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2485 rtp_protocol_select="udp_protocol"
2486 sctp_protocol_deps="struct_sctp_event_subscribe"
2487 sctp_protocol_select="network"
2488 srtp_protocol_select="rtp_protocol"
2489 tcp_protocol_select="network"
2490 tls_protocol_deps_any="openssl gnutls"
2491 tls_protocol_select="tcp_protocol"
2492 udp_protocol_select="network"
2493 unix_protocol_deps="sys_un_h"
2494 unix_protocol_select="network"
2495
2496 # filters
2497 aconvert_filter_deps="swresample"
2498 amovie_filter_deps="avcodec avformat"
2499 aresample_filter_deps="swresample"
2500 ass_filter_deps="libass"
2501 asyncts_filter_deps="avresample"
2502 atempo_filter_deps="avcodec"
2503 atempo_filter_select="rdft"
2504 azmq_filter_deps="libzmq"
2505 blackframe_filter_deps="gpl"
2506 boxblur_filter_deps="gpl"
2507 bs2b_filter_deps="libbs2b"
2508 colormatrix_filter_deps="gpl"
2509 cropdetect_filter_deps="gpl"
2510 dctdnoiz_filter_deps="avcodec"
2511 dctdnoiz_filter_select="dct"
2512 delogo_filter_deps="gpl"
2513 deshake_filter_deps="avcodec"
2514 deshake_filter_select="dsputil"
2515 drawtext_filter_deps="libfreetype"
2516 ebur128_filter_deps="gpl"
2517 flite_filter_deps="libflite"
2518 frei0r_filter_deps="frei0r dlopen"
2519 frei0r_filter_extralibs='$ldl'
2520 frei0r_src_filter_deps="frei0r dlopen"
2521 frei0r_src_filter_extralibs='$ldl'
2522 geq_filter_deps="gpl"
2523 histeq_filter_deps="gpl"
2524 hqdn3d_filter_deps="gpl"
2525 interlace_filter_deps="gpl"
2526 kerndeint_filter_deps="gpl"
2527 ladspa_filter_deps="ladspa dlopen"
2528 ladspa_filter_extralibs='$ldl'
2529 mcdeint_filter_deps="avcodec gpl"
2530 movie_filter_deps="avcodec avformat"
2531 mp_filter_deps="gpl avcodec swscale inline_asm"
2532 mpdecimate_filter_deps="gpl avcodec"
2533 mptestsrc_filter_deps="gpl"
2534 negate_filter_deps="lut_filter"
2535 perspective_filter_deps="gpl"
2536 ocv_filter_deps="libopencv"
2537 owdenoise_filter_deps="gpl"
2538 pan_filter_deps="swresample"
2539 phase_filter_deps="gpl"
2540 pp_filter_deps="gpl postproc"
2541 pullup_filter_deps="gpl"
2542 removelogo_filter_deps="avcodec avformat swscale"
2543 resample_filter_deps="avresample"
2544 sab_filter_deps="gpl swscale"
2545 scale_filter_deps="swscale"
2546 smartblur_filter_deps="gpl swscale"
2547 showspectrum_filter_deps="avcodec"
2548 showspectrum_filter_select="rdft"
2549 spp_filter_deps="gpl avcodec"
2550 spp_filter_select="dsputil fft idctdsp"
2551 stereo3d_filter_deps="gpl"
2552 subtitles_filter_deps="avformat avcodec libass"
2553 super2xsai_filter_deps="gpl"
2554 tinterlace_filter_deps="gpl"
2555 vidstabdetect_filter_deps="libvidstab"
2556 vidstabtransform_filter_deps="libvidstab"
2557 pixfmts_super2xsai_test_deps="super2xsai_filter"
2558 tinterlace_merge_test_deps="tinterlace_filter"
2559 tinterlace_pad_test_deps="tinterlace_filter"
2560 zmq_filter_deps="libzmq"
2561 zoompan_filter_deps="swscale"
2562
2563 # examples
2564 avio_reading="avformat avcodec avutil"
2565 avcodec_example_deps="avcodec avutil"
2566 demuxing_decoding_example_deps="avcodec avformat avutil"
2567 filter_audio_example_deps="avfilter avutil"
2568 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2569 filtering_video_example_deps="avfilter avcodec avformat avutil"
2570 metadata_example_deps="avformat avutil"
2571 muxing_example_deps="avcodec avformat avutil swscale"
2572 remuxing_example_deps="avcodec avformat avutil"
2573 resampling_audio_example_deps="avutil swresample"
2574 scaling_video_example_deps="avutil swscale"
2575 transcode_aac_example_deps="avcodec avformat swresample"
2576 transcoding_example_deps="avfilter avcodec avformat avutil"
2577
2578 # libraries, in linking order
2579 avcodec_deps="avutil"
2580 avdevice_deps="avformat avcodec avutil"
2581 avfilter_deps="avutil"
2582 avformat_deps="avcodec avutil"
2583 avresample_deps="avutil"
2584 postproc_deps="avutil gpl"
2585 swresample_deps="avutil"
2586 swscale_deps="avutil"
2587
2588 # programs
2589 ffmpeg_deps="avcodec avfilter avformat swresample"
2590 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2591                null_filter
2592                setpts_filter trim_filter"
2593 ffplay_deps="avcodec avformat swscale swresample sdl"
2594 ffplay_libs='$sdl_libs'
2595 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2596 ffprobe_deps="avcodec avformat"
2597 ffserver_deps="avformat fork sarestart"
2598 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2599
2600 # documentation
2601 podpages_deps="perl"
2602 manpages_deps="perl pod2man"
2603 htmlpages_deps="perl texi2html"
2604 txtpages_deps="perl makeinfo"
2605 doc_deps_any="manpages htmlpages podpages txtpages"
2606
2607 # default parameters
2608
2609 logfile="config.log"
2610
2611 # installation paths
2612 prefix_default="/usr/local"
2613 bindir_default='${prefix}/bin'
2614 datadir_default='${prefix}/share/ffmpeg'
2615 docdir_default='${prefix}/share/doc/ffmpeg'
2616 incdir_default='${prefix}/include'
2617 libdir_default='${prefix}/lib'
2618 mandir_default='${prefix}/share/man'
2619 shlibdir_default="$libdir_default"
2620
2621 # toolchain
2622 ar_default="ar"
2623 cc_default="gcc"
2624 cxx_default="g++"
2625 host_cc_default="gcc"
2626 cp_f="cp -f"
2627 doxygen_default="doxygen"
2628 install="install"
2629 ln_s="ln -s -f"
2630 nm_default="nm -g"
2631 objformat="elf"
2632 pkg_config_default=pkg-config
2633 ranlib_default="ranlib"
2634 strip_default="strip"
2635 yasmexe_default="yasm"
2636 windres_default="windres"
2637
2638 nogas=":"
2639
2640 # OS
2641 target_os_default=$(tolower $(uname -s))
2642 host_os=$target_os_default
2643
2644 # machine
2645 if test "$target_os_default" = aix; then
2646     arch_default=$(uname -p)
2647     strip_default="strip -X32_64"
2648 else
2649     arch_default=$(uname -m)
2650 fi
2651 cpu="generic"
2652
2653 # configurable options
2654 enable $PROGRAM_LIST
2655 enable $DOCUMENT_LIST
2656 enable $EXAMPLE_LIST
2657 enable $(filter_out avresample $LIBRARY_LIST)
2658 enable stripping
2659
2660 enable asm
2661 enable debug
2662 enable doc
2663 enable optimizations
2664 enable runtime_cpudetect
2665 enable safe_bitstream_reader
2666 enable static
2667 enable swscale_alpha
2668
2669 sws_max_filter_size_default=256
2670 set_default sws_max_filter_size
2671
2672 # Enable hwaccels by default.
2673 enable dxva2 vaapi vda vdpau xvmc
2674 enable xlib
2675
2676 # build settings
2677 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2678 LIBPREF="lib"
2679 LIBSUF=".a"
2680 FULLNAME='$(NAME)$(BUILDSUF)'
2681 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2682 SLIBPREF="lib"
2683 SLIBSUF=".so"
2684 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2685 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2686 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2687 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2688 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2689 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2690
2691 asflags_filter=echo
2692 cflags_filter=echo
2693 ldflags_filter=echo
2694
2695 AS_C='-c'
2696 AS_O='-o $@'
2697 CC_C='-c'
2698 CC_E='-E -o $@'
2699 CC_O='-o $@'
2700 CXX_C='-c'
2701 CXX_O='-o $@'
2702 LD_O='-o $@'
2703 LD_LIB='-l%'
2704 LD_PATH='-L'
2705 HOSTCC_C='-c'
2706 HOSTCC_E='-E -o $@'
2707 HOSTCC_O='-o $@'
2708 HOSTLD_O='-o $@'
2709
2710 host_libs='-lm'
2711 host_cflags_filter=echo
2712 host_ldflags_filter=echo
2713
2714 target_path='$(CURDIR)'
2715
2716 # since the object filename is not given with the -MM flag, the compiler
2717 # is only able to print the basename, and we must add the path ourselves
2718 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2719 DEPFLAGS='-MM'
2720
2721 # find source path
2722 if test -f configure; then
2723     source_path=.
2724 else
2725     source_path=$(cd $(dirname "$0"); pwd)
2726     echo "$source_path" | grep -q '[[:blank:]]' &&
2727         die "Out of tree builds are impossible with whitespace in source path."
2728     test -e "$source_path/config.h" &&
2729         die "Out of tree builds are impossible with config.h in source dir."
2730 fi
2731
2732 for v in "$@"; do
2733     r=${v#*=}
2734     l=${v%"$r"}
2735     r=$(sh_quote "$r")
2736     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2737 done
2738
2739 find_things(){
2740     thing=$1
2741     pattern=$2
2742     file=$source_path/$3
2743     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2744 }
2745
2746 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2747 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2748 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2749 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2750 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2751 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2752 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2753 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2754 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2755 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2756 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2757
2758 ALL_COMPONENTS="
2759     $BSF_LIST
2760     $DECODER_LIST
2761     $DEMUXER_LIST
2762     $ENCODER_LIST
2763     $FILTER_LIST
2764     $HWACCEL_LIST
2765     $INDEV_LIST
2766     $MUXER_LIST
2767     $OUTDEV_LIST
2768     $PARSER_LIST
2769     $PROTOCOL_LIST
2770 "
2771
2772 for n in $COMPONENT_LIST; do
2773     v=$(toupper ${n%s})_LIST
2774     eval enable \$$v
2775     eval ${n}_if_any="\$$v"
2776 done
2777
2778 enable $ARCH_EXT_LIST
2779
2780 die_unknown(){
2781     echo "Unknown option \"$1\"."
2782     echo "See $0 --help for available options."
2783     exit 1
2784 }
2785
2786 print_3_columns() {
2787     cat | tr ' ' '\n' | sort | pr -r -3 -t
2788 }
2789
2790 show_list() {
2791     suffix=_$1
2792     shift
2793     echo $* | sed s/$suffix//g | print_3_columns
2794     exit 0
2795 }
2796
2797 rand_list(){
2798     IFS=', '
2799     set -- $*
2800     unset IFS
2801     for thing; do
2802         comp=${thing%:*}
2803         prob=${thing#$comp}
2804         prob=${prob#:}
2805         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2806         echo "prob ${prob:-0.5}"
2807         printf '%s\n' $comp
2808     done
2809 }
2810
2811 do_random(){
2812     action=$1
2813     shift
2814     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2815     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2816 }
2817
2818 for opt do
2819     optval="${opt#*=}"
2820     case "$opt" in
2821         --extra-ldflags=*)
2822             add_ldflags $optval
2823         ;;
2824         --extra-libs=*)
2825             add_extralibs $optval
2826         ;;
2827         --disable-devices)
2828             disable $INDEV_LIST $OUTDEV_LIST
2829         ;;
2830         --enable-debug=*)
2831             debuglevel="$optval"
2832         ;;
2833         --disable-programs)
2834             disable $PROGRAM_LIST
2835         ;;
2836         --disable-everything)
2837             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2838         ;;
2839         --disable-all)
2840             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2841             disable $LIBRARY_LIST $PROGRAM_LIST doc
2842         ;;
2843         --enable-random|--disable-random)
2844             action=${opt%%-random}
2845             do_random ${action#--} $COMPONENT_LIST
2846         ;;
2847         --enable-random=*|--disable-random=*)
2848             action=${opt%%-random=*}
2849             do_random ${action#--} $optval
2850         ;;
2851         --enable-*=*|--disable-*=*)
2852             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2853             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2854             eval list=\$$(toupper $thing)_LIST
2855             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2856             list=$(filter "$name" $list)
2857             [ "$list" = "" ] && warn "Option $opt did not match anything"
2858             $action $list
2859         ;;
2860         --enable-?*|--disable-?*)
2861             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2862             if is_in $option $COMPONENT_LIST; then
2863                 test $action = disable && action=unset
2864                 eval $action \$$(toupper ${option%s})_LIST
2865             elif is_in $option $CMDLINE_SELECT; then
2866                 $action $option
2867             else
2868                 die_unknown $opt
2869             fi
2870         ;;
2871         --list-*)
2872             NAME="${opt#--list-}"
2873             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2874             NAME=${NAME%s}
2875             eval show_list $NAME \$$(toupper $NAME)_LIST
2876         ;;
2877         --help|-h) show_help
2878         ;;
2879         --fatal-warnings) enable fatal_warnings
2880         ;;
2881         *)
2882             optname="${opt%%=*}"
2883             optname="${optname#--}"
2884             optname=$(echo "$optname" | sed 's/-/_/g')
2885             if is_in $optname $CMDLINE_SET; then
2886                 eval $optname='$optval'
2887             elif is_in $optname $CMDLINE_APPEND; then
2888                 append $optname "$optval"
2889             else
2890                 die_unknown $opt
2891             fi
2892         ;;
2893     esac
2894 done
2895
2896 disabled logging && logfile=/dev/null
2897
2898 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2899 set >> $logfile
2900
2901 test -n "$cross_prefix" && enable cross_compile
2902
2903 if enabled cross_compile; then
2904     test -n "$arch" && test -n "$target_os" ||
2905         die "Must specify target arch and OS when cross-compiling"
2906 fi
2907
2908 ar_default="${cross_prefix}${ar_default}"
2909 cc_default="${cross_prefix}${cc_default}"
2910 cxx_default="${cross_prefix}${cxx_default}"
2911 nm_default="${cross_prefix}${nm_default}"
2912 pkg_config_default="${cross_prefix}${pkg_config_default}"
2913 ranlib_default="${cross_prefix}${ranlib_default}"
2914 strip_default="${cross_prefix}${strip_default}"
2915 windres_default="${cross_prefix}${windres_default}"
2916
2917 sysinclude_default="${sysroot}/usr/include"
2918
2919 test -n "$valgrind" && toolchain="valgrind-memcheck"
2920
2921 case "$toolchain" in
2922     clang-asan)
2923         cc_default="clang"
2924         add_cflags  -fsanitize=address
2925         add_ldflags -fsanitize=address
2926     ;;
2927     clang-tsan)
2928         cc_default="clang"
2929         add_cflags  -fsanitize=thread -pie
2930         add_ldflags -fsanitize=thread -pie
2931     ;;
2932     clang-usan)
2933         cc_default="clang"
2934         add_cflags  -fsanitize=undefined
2935         add_ldflags -fsanitize=undefined
2936     ;;
2937     gcc-asan)
2938         cc_default="gcc"
2939         add_cflags  -fsanitize=address
2940         add_ldflags -fsanitize=address
2941     ;;
2942     gcc-tsan)
2943         cc_default="gcc"
2944         add_cflags  -fsanitize=thread -pie -fPIC
2945         add_ldflags -fsanitize=thread -pie -fPIC
2946     ;;
2947     gcc-usan)
2948         cc_default="gcc"
2949         add_cflags  -fsanitize=undefined
2950         add_ldflags -fsanitize=undefined
2951     ;;
2952     valgrind-massif)
2953         target_exec_default=${valgrind:-"valgrind"}
2954         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"
2955     ;;
2956     valgrind-memcheck)
2957         target_exec_default=${valgrind:-"valgrind"}
2958         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2959     ;;
2960     msvc)
2961         # Check whether the current MSVC version needs the C99 converter.
2962         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2963         # support enough of C99 to build ffmpeg. Default to the new
2964         # behaviour if the regexp was unable to match anything, since this
2965         # successfully parses the version number of existing supported
2966         # versions that require the converter (MSVC 2010 and 2012).
2967         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2968         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2969             cc_default="cl"
2970         else
2971             cc_default="c99wrap cl"
2972         fi
2973         ld_default="link"
2974         nm_default="dumpbin -symbols"
2975         ar_default="lib"
2976         target_os_default="win32"
2977         # Use a relative path for TMPDIR. This makes sure all the
2978         # ffconf temp files are written with a relative path, avoiding
2979         # issues with msys/win32 path conversion for MSVC parameters
2980         # such as -Fo<file> or -out:<file>.
2981         TMPDIR=.
2982     ;;
2983     icl)
2984         cc_default="icl"
2985         ld_default="xilink"
2986         nm_default="dumpbin -symbols"
2987         ar_default="xilib"
2988         target_os_default="win32"
2989         TMPDIR=.
2990     ;;
2991     gcov)
2992         add_cflags  -fprofile-arcs -ftest-coverage
2993         add_ldflags -fprofile-arcs -ftest-coverage
2994     ;;
2995     hardened)
2996         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2997         add_ldflags -Wl,-z,relro -Wl,-z,now
2998     ;;
2999     ?*)
3000         die "Unknown toolchain $toolchain"
3001     ;;
3002 esac
3003
3004 set_default arch cc cxx doxygen pkg_config ranlib strip sysinclude \
3005     target_exec target_os yasmexe
3006 enabled cross_compile || host_cc_default=$cc
3007 set_default host_cc
3008
3009 if ! $pkg_config --version >/dev/null 2>&1; then
3010     warn "$pkg_config not found, library detection may fail."
3011     pkg_config=false
3012 fi
3013
3014 if test $doxygen != $doxygen_default && \
3015   ! $doxygen --version >/dev/null 2>&1; then
3016     warn "Specified doxygen \"$doxygen\" not found, API documentation will fail to build."
3017 fi
3018
3019 exesuf() {
3020     case $1 in
3021         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
3022     esac
3023 }
3024
3025 EXESUF=$(exesuf $target_os)
3026 HOSTEXESUF=$(exesuf $host_os)
3027
3028 # set temporary file name
3029 : ${TMPDIR:=$TEMPDIR}
3030 : ${TMPDIR:=$TMP}
3031 : ${TMPDIR:=/tmp}
3032
3033 if [ -n "$tempprefix" ] ; then
3034     mktemp(){
3035         echo $tempprefix.${HOSTNAME}.${UID}
3036     }
3037 elif ! check_cmd mktemp -u XXXXXX; then
3038     # simple replacement for missing mktemp
3039     # NOT SAFE FOR GENERAL USE
3040     mktemp(){
3041         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3042     }
3043 fi
3044
3045 tmpfile(){
3046     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3047         (set -C; exec > $tmp) 2>/dev/null ||
3048         die "Unable to create temporary file in $TMPDIR."
3049     append TMPFILES $tmp
3050     eval $1=$tmp
3051 }
3052
3053 trap 'rm -f -- $TMPFILES' EXIT
3054
3055 tmpfile TMPASM .asm
3056 tmpfile TMPC   .c
3057 tmpfile TMPCPP .cpp
3058 tmpfile TMPE   $EXESUF
3059 tmpfile TMPH   .h
3060 tmpfile TMPM   .m
3061 tmpfile TMPO   .o
3062 tmpfile TMPS   .S
3063 tmpfile TMPSH  .sh
3064 tmpfile TMPV   .ver
3065
3066 unset -f mktemp
3067
3068 chmod +x $TMPE
3069
3070 # make sure we can execute files in $TMPDIR
3071 cat > $TMPSH 2>> $logfile <<EOF
3072 #! /bin/sh
3073 EOF
3074 chmod +x $TMPSH >> $logfile 2>&1
3075 if ! $TMPSH >> $logfile 2>&1; then
3076     cat <<EOF
3077 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3078 variable to another directory and make sure that it is not mounted noexec.
3079 EOF
3080     die "Sanity test failed."
3081 fi
3082
3083 ccc_flags(){
3084     for flag; do
3085         case $flag in
3086             -std=c99)           echo -c99                       ;;
3087             -mcpu=*)            echo -arch ${flag#*=}           ;;
3088             -mieee)             echo -ieee                      ;;
3089             -O*|-fast)          echo $flag                      ;;
3090             -fno-math-errno)    echo -assume nomath_errno       ;;
3091             -g)                 echo -g3                        ;;
3092             -Wall)              echo -msg_enable level2         ;;
3093             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3094             -Wl,*)              echo $flag                      ;;
3095             -f*|-W*)                                            ;;
3096             *)                  echo $flag                      ;;
3097         esac
3098    done
3099 }
3100
3101 cparser_flags(){
3102     for flag; do
3103         case $flag in
3104             -Wno-switch)             echo -Wno-switch-enum ;;
3105             -Wno-format-zero-length) ;;
3106             -Wdisabled-optimization) ;;
3107             -Wno-pointer-sign)       echo -Wno-other ;;
3108             *)                       echo $flag ;;
3109         esac
3110     done
3111 }
3112
3113 msvc_common_flags(){
3114     for flag; do
3115         case $flag in
3116             # In addition to specifying certain flags under the compiler
3117             # specific filters, they must be specified here as well or else the
3118             # generic catch all at the bottom will print the original flag.
3119             -Wall)                ;;
3120             -std=c99)             ;;
3121             # Common flags
3122             -fomit-frame-pointer) ;;
3123             -g)                   echo -Z7 ;;
3124             -fno-math-errno)      ;;
3125             -fno-common)          ;;
3126             -fno-signed-zeros)    ;;
3127             -fPIC)                ;;
3128             -mthumb)              ;;
3129             -march=*)             ;;
3130             -lz)                  echo zlib.lib ;;
3131             -lavifil32)           echo vfw32.lib ;;
3132             -lavicap32)           echo vfw32.lib user32.lib ;;
3133             -l*)                  echo ${flag#-l}.lib ;;
3134             *)                    echo $flag ;;
3135         esac
3136     done
3137 }
3138
3139 msvc_flags(){
3140     msvc_common_flags "$@"
3141     for flag; do
3142         case $flag in
3143             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3144                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3145                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3146                                        -wd4554 \
3147                                        -wd4273 ;;
3148         esac
3149     done
3150 }
3151
3152 icl_flags(){
3153     msvc_common_flags "$@"
3154     for flag; do
3155         case $flag in
3156             # Despite what Intel's documentation says -Wall, which is supported
3157             # on Windows, does enable remarks so disable them here.
3158             -Wall)                echo $flag -Qdiag-disable:remark ;;
3159             -std=c99)             echo -Qstd=c99 ;;
3160             -flto)                echo -ipo ;;
3161         esac
3162     done
3163 }
3164
3165 icc_flags(){
3166     for flag; do
3167         case $flag in
3168             -flto)                echo -ipo ;;
3169             *)                    echo $flag ;;
3170         esac
3171     done
3172 }
3173
3174 pgi_flags(){
3175     for flag; do
3176         case $flag in
3177             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3178             -fomit-frame-pointer) echo -Mnoframe ;;
3179             -g)                   echo -gopt ;;
3180             *)                    echo $flag ;;
3181         esac
3182     done
3183 }
3184
3185 suncc_flags(){
3186     for flag; do
3187         case $flag in
3188             -march=*|-mcpu=*)
3189                 case "${flag#*=}" in
3190                     native)                   echo -xtarget=native       ;;
3191                     v9|niagara)               echo -xarch=sparc          ;;
3192                     ultrasparc)               echo -xarch=sparcvis       ;;
3193                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3194                     i586|pentium)             echo -xchip=pentium        ;;
3195                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3196                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3197                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3198                     pentium4*)          echo -xtarget=pentium4           ;;
3199                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3200                     *-sse3)             echo -xarch=sse3                 ;;
3201                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3202                     bonnell)                   echo -xarch=ssse3         ;;
3203                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3204                     westmere)                  echo -xtarget=westmere    ;;
3205                     silvermont)                echo -xarch=sse4_2        ;;
3206                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3207                     core-avx*|ivybridge|haswell|broadwell)
3208                                                echo -xarch=avx           ;;
3209                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3210                     btver1)                    echo -xarch=amdsse4a      ;;
3211                     btver2|bdver*)             echo -xarch=avx           ;;
3212                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3213                     k8|opteron|athlon64|athlon-fx)
3214                                                echo -xarch=sse2a         ;;
3215                     athlon*)                   echo -xarch=pentium_proa  ;;
3216                 esac
3217                 ;;
3218             -std=c99)             echo -xc99              ;;
3219             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3220             -fPIC)                echo -KPIC -xcode=pic32 ;;
3221             -W*,*)                echo $flag              ;;
3222             -f*-*|-W*|-mimpure-text)                      ;;
3223             -shared)              echo -G                 ;;
3224             *)                    echo $flag              ;;
3225         esac
3226     done
3227 }
3228
3229 tms470_flags(){
3230     for flag; do
3231         case $flag in
3232             -march=*|-mcpu=*)
3233                 case "${flag#*=}" in
3234                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3235                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3236                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3237                     armv6*|arm11*)          echo -mv=6   ;;
3238                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3239                                             echo -mv=5e  ;;
3240                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3241                 esac
3242                 ;;
3243             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3244             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3245             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3246             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3247             -msoft-float)   echo --float_support=vfplib       ;;
3248             -O[0-3]|-mf=*)  echo $flag                        ;;
3249             -g)             echo -g -mn                       ;;
3250             -pds=*)         echo $flag                        ;;
3251             -D*|-I*)        echo $flag                        ;;
3252             --gcc|--abi=*)  echo $flag                        ;;
3253             -me)            echo $flag                        ;;
3254         esac
3255     done
3256 }
3257
3258 probe_cc(){
3259     pfx=$1
3260     _cc=$2
3261
3262     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3263     unset _ld_o _ldflags _ld_lib _ld_path
3264     unset _depflags _DEPCMD _DEPFLAGS
3265     _flags_filter=echo
3266
3267     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3268         true # no-op to avoid reading stdin in following checks
3269     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3270         _type=llvm_gcc
3271         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3272         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3273         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3274         _cflags_speed='-O3'
3275         _cflags_size='-Os'
3276     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3277         _type=gcc
3278         gcc_version=$($_cc --version | head -n1)
3279         gcc_basever=$($_cc -dumpversion)
3280         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3281         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3282         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3283         if ! $_cc -dumpversion | grep -q '^2\.'; then
3284             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3285         fi
3286         _cflags_speed='-O3'
3287         _cflags_size='-Os'
3288     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3289         _type=icc
3290         _ident=$($_cc --version | head -n1)
3291         _depflags='-MMD'
3292         _cflags_speed='-O3'
3293         _cflags_size='-Os'
3294         _cflags_noopt='-O1'
3295         _flags_filter=icc_flags
3296     elif $_cc -v 2>&1 | grep -q xlc; then
3297         _type=xlc
3298         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3299         _cflags_speed='-O5'
3300         _cflags_size='-O5 -qcompact'
3301     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3302         _type=ccc
3303         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3304         _DEPFLAGS='-M'
3305         _cflags_speed='-fast'
3306         _cflags_size='-O1'
3307         _flags_filter=ccc_flags
3308     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3309         test -d "$sysroot" || die "No valid sysroot specified."
3310         _type=armcc
3311         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
3312         armcc_conf="$PWD/armcc.conf"
3313         $_cc --arm_linux_configure                 \
3314              --arm_linux_config_file="$armcc_conf" \
3315              --configure_sysroot="$sysroot"        \
3316              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3317              die "Error creating armcc configuration file."
3318         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3319         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3320         as_default="${cross_prefix}gcc"
3321         _depflags='-MMD'
3322         _cflags_speed='-O3'
3323         _cflags_size='-Os'
3324     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3325         _type=tms470
3326         _ident=$($_cc -version | head -n1 | tr -s ' ')
3327         _flags='--gcc --abi=eabi -me'
3328         _cc_e='-ppl -fe=$@'
3329         _cc_o='-fe=$@'
3330         _depflags='-ppa -ppd=$(@:.o=.d)'
3331         _cflags_speed='-O3 -mf=5'
3332         _cflags_size='-O3 -mf=2'
3333         _flags_filter=tms470_flags
3334     elif $_cc -v 2>&1 | grep -q clang; then
3335         _type=clang
3336         _ident=$($_cc --version | head -n1)
3337         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3338         _cflags_speed='-O3'
3339         _cflags_size='-Os'
3340     elif $_cc -V 2>&1 | grep -q Sun; then
3341         _type=suncc
3342         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3343         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3344         _DEPFLAGS='-xM1 -xc99'
3345         _ldflags='-std=c99'
3346         _cflags_speed='-O5'
3347         _cflags_size='-O5 -xspace'
3348         _flags_filter=suncc_flags
3349     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3350         _type=pathscale
3351         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3352         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3353         _cflags_speed='-O2'
3354         _cflags_size='-Os'
3355         _flags_filter='filter_out -Wdisabled-optimization'
3356     elif $_cc -v 2>&1 | grep -q Open64; then
3357         _type=open64
3358         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3359         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3360         _cflags_speed='-O2'
3361         _cflags_size='-Os'
3362         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3363     elif $_cc -V 2>&1 | grep -q Portland; then
3364         _type=pgi
3365         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3366         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3367         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3368         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3369         _cflags_noopt="-O"
3370         _flags_filter=pgi_flags
3371     elif $_cc 2>&1 | grep -q Microsoft; then
3372         _type=msvc
3373         _ident=$($cc 2>&1 | head -n1)
3374         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3375         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3376         _cflags_speed="-O2"
3377         _cflags_size="-O1"
3378         if $_cc 2>&1 | grep -q Linker; then
3379             _ld_o='-out:$@'
3380         else
3381             _ld_o='-Fe$@'
3382         fi
3383         _cc_o='-Fo$@'
3384         _cc_e='-P -Fi$@'
3385         _flags_filter=msvc_flags
3386         _ld_lib='lib%.a'
3387         _ld_path='-libpath:'
3388         _flags='-nologo'
3389         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3390         if [ $pfx = hostcc ]; then
3391             append _cflags -Dsnprintf=_snprintf
3392         fi
3393         disable stripping
3394     elif $_cc 2>&1 | grep -q Intel; then
3395         _type=icl
3396         _ident=$($cc 2>&1 | head -n1)
3397         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3398         # Not only is O3 broken on 13.x+ but it is slower on all previous
3399         # versions (tested) as well.
3400         _cflags_speed="-O2"
3401         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3402         if $_cc 2>&1 | grep -q Linker; then
3403             _ld_o='-out:$@'
3404         else
3405             _ld_o='-Fe$@'
3406         fi
3407         _cc_o='-Fo$@'
3408         _cc_e='-P'
3409         _flags_filter=icl_flags
3410         _ld_lib='lib%.a'
3411         _ld_path='-libpath:'
3412         # -Qdiag-error to make icl error when seeing certain unknown arguments
3413         _flags='-nologo -Qdiag-error:4044,10157'
3414         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3415         # with MSVC which enables it by default.
3416         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3417         if [ $pfx = hostcc ]; then
3418             append _cflags -Dsnprintf=_snprintf
3419         fi
3420     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3421         _type=cparser
3422         _ident=$($_cc --version | head -n1)
3423         _depflags='-MMD'
3424         _cflags_speed='-O4'
3425         _cflags_size='-O2'
3426         _flags_filter=cparser_flags
3427     fi
3428
3429     eval ${pfx}_type=\$_type
3430     eval ${pfx}_ident=\$_ident
3431 }
3432
3433 set_ccvars(){
3434     eval ${1}_C=\${_cc_c-\${${1}_C}}
3435     eval ${1}_E=\${_cc_e-\${${1}_E}}
3436     eval ${1}_O=\${_cc_o-\${${1}_O}}
3437
3438     if [ -n "$_depflags" ]; then
3439         eval ${1}_DEPFLAGS=\$_depflags
3440     else
3441         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3442         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3443         eval DEP${1}FLAGS=\$_flags
3444     fi
3445 }
3446
3447 probe_cc cc "$cc"
3448 cflags_filter=$_flags_filter
3449 cflags_speed=$_cflags_speed
3450 cflags_size=$_cflags_size
3451 cflags_noopt=$_cflags_noopt
3452 add_cflags $_flags $_cflags
3453 cc_ldflags=$_ldflags
3454 set_ccvars CC
3455
3456 probe_cc hostcc "$host_cc"
3457 host_cflags_filter=$_flags_filter
3458 add_host_cflags  $_flags $_cflags
3459 set_ccvars HOSTCC
3460
3461 test -n "$cc_type" && enable $cc_type ||
3462     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3463
3464 : ${as_default:=$cc}
3465 : ${dep_cc_default:=$cc}
3466 : ${ld_default:=$cc}
3467 : ${host_ld_default:=$host_cc}
3468 set_default ar as dep_cc ld host_ld windres
3469
3470 probe_cc as "$as"
3471 asflags_filter=$_flags_filter
3472 add_asflags $_flags $_cflags
3473 set_ccvars AS
3474
3475 probe_cc ld "$ld"
3476 ldflags_filter=$_flags_filter
3477 add_ldflags $_flags $_ldflags
3478 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3479 LD_O=${_ld_o-$LD_O}
3480 LD_LIB=${_ld_lib-$LD_LIB}
3481 LD_PATH=${_ld_path-$LD_PATH}
3482
3483 probe_cc hostld "$host_ld"
3484 host_ldflags_filter=$_flags_filter
3485 add_host_ldflags $_flags $_ldflags
3486 HOSTLD_O=${_ld_o-$HOSTLD_O}
3487
3488 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3489     probe_cc depcc "$dep_cc"
3490     CCDEP=${_DEPCMD:-$DEPCMD}
3491     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3492     DEPCCFLAGS=$_flags
3493 fi
3494
3495 if $ar 2>&1 | grep -q Microsoft; then
3496     arflags="-nologo"
3497     ar_o='-out:$@'
3498 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3499     arflags="rq"
3500     ar_o='$@'
3501 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3502     arflags='-Xany -r -c'
3503     ar_o='$@'
3504 else
3505     arflags="rc"
3506     ar_o='$@'
3507 fi
3508
3509 add_cflags $extra_cflags
3510 add_cxxflags $extra_cxxflags
3511 add_asflags $extra_cflags
3512
3513 if test -n "$sysroot"; then
3514     case "$cc_type" in
3515         gcc|llvm_gcc|clang)
3516             add_cppflags --sysroot="$sysroot"
3517             add_ldflags --sysroot="$sysroot"
3518 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3519             add_cppflags -isysroot "$sysroot"
3520             add_ldflags -isysroot "$sysroot"
3521         ;;
3522         tms470)
3523             add_cppflags -I"$sysinclude"
3524             add_ldflags  --sysroot="$sysroot"
3525         ;;
3526     esac
3527 fi
3528
3529 if test "$cpu" = host; then
3530     enabled cross_compile &&
3531         die "--cpu=host makes no sense when cross-compiling."
3532
3533     case "$cc_type" in
3534         gcc|llvm_gcc)
3535             check_native(){
3536                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3537                 sed -n "/cc1.*$1=/{
3538                             s/.*$1=\\([^ ]*\\).*/\\1/
3539                             p
3540                             q
3541                         }" $TMPE
3542             }
3543             cpu=$(check_native -march || check_native -mcpu)
3544         ;;
3545     esac
3546
3547     test "${cpu:-host}" = host &&
3548         die "--cpu=host not supported with compiler $cc"
3549 fi
3550
3551 # Deal with common $arch aliases
3552 case "$arch" in
3553     aarch64|arm64)
3554         arch="aarch64"
3555     ;;
3556     arm*|iPad*|iPhone*)
3557         arch="arm"
3558     ;;
3559     mips*|IP*)
3560         arch="mips"
3561     ;;
3562     parisc*|hppa*)
3563         arch="parisc"
3564     ;;
3565     "Power Macintosh"|ppc*|powerpc*)
3566         arch="ppc"
3567     ;;
3568     s390|s390x)
3569         arch="s390"
3570     ;;
3571     sh4|sh)
3572         arch="sh4"
3573     ;;
3574     sun4u|sparc*)
3575         arch="sparc"
3576     ;;
3577     tilegx|tile-gx)
3578         arch="tilegx"
3579     ;;
3580     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3581         arch="x86"
3582     ;;
3583 esac
3584
3585 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3586 enable $arch
3587
3588 # Add processor-specific flags
3589 if enabled aarch64; then
3590
3591     case $cpu in
3592         armv*)
3593             cpuflags="-march=$cpu"
3594         ;;
3595         *)
3596             cpuflags="-mcpu=$cpu"
3597         ;;
3598     esac
3599
3600 elif enabled alpha; then
3601
3602     cpuflags="-mcpu=$cpu"
3603
3604 elif enabled arm; then
3605
3606     check_arm_arch() {
3607         check_cpp_condition stddef.h \
3608             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3609             $cpuflags
3610     }
3611
3612     probe_arm_arch() {
3613         if   check_arm_arch 4;        then echo armv4;
3614         elif check_arm_arch 4T;       then echo armv4t;
3615         elif check_arm_arch 5;        then echo armv5;
3616         elif check_arm_arch 5E;       then echo armv5e;
3617         elif check_arm_arch 5T;       then echo armv5t;
3618         elif check_arm_arch 5TE;      then echo armv5te;
3619         elif check_arm_arch 5TEJ;     then echo armv5te;
3620         elif check_arm_arch 6;        then echo armv6;
3621         elif check_arm_arch 6J;       then echo armv6j;
3622         elif check_arm_arch 6K;       then echo armv6k;
3623         elif check_arm_arch 6Z;       then echo armv6z;
3624         elif check_arm_arch 6ZK;      then echo armv6zk;
3625         elif check_arm_arch 6T2;      then echo armv6t2;
3626         elif check_arm_arch 7;        then echo armv7;
3627         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3628         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3629         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3630         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3631         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3632         fi
3633     }
3634
3635     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3636
3637     case $cpu in
3638         armv*)
3639             cpuflags="-march=$cpu"
3640             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3641         ;;
3642         *)
3643             cpuflags="-mcpu=$cpu"
3644             case $cpu in
3645                 cortex-a*)                               subarch=armv7a  ;;
3646                 cortex-r*)                               subarch=armv7r  ;;
3647                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3648                 arm11*)                                  subarch=armv6   ;;
3649                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3650                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3651                 *)                             subarch=$(probe_arm_arch) ;;
3652             esac
3653         ;;
3654     esac
3655
3656     case "$subarch" in
3657         armv5t*)    enable fast_clz                ;;
3658         armv[6-8]*)
3659             enable fast_clz
3660             disabled fast_unaligned || enable fast_unaligned
3661             ;;
3662     esac
3663
3664 elif enabled avr32; then
3665
3666     case $cpu in
3667         ap7[02]0[0-2])
3668             subarch="avr32_ap"
3669             cpuflags="-mpart=$cpu"
3670         ;;
3671         ap)
3672             subarch="avr32_ap"
3673             cpuflags="-march=$cpu"
3674         ;;
3675         uc3[ab]*)
3676             subarch="avr32_uc"
3677             cpuflags="-mcpu=$cpu"
3678         ;;
3679         uc)
3680             subarch="avr32_uc"
3681             cpuflags="-march=$cpu"
3682         ;;
3683     esac
3684
3685 elif enabled bfin; then
3686
3687     cpuflags="-mcpu=$cpu"
3688
3689 elif enabled mips; then
3690
3691     cpuflags="-march=$cpu"
3692
3693     case $cpu in
3694         24kc)
3695             disable mipsfpu
3696             disable mipsdspr1
3697             disable mipsdspr2
3698         ;;
3699         24kf*)
3700             disable mipsdspr1
3701             disable mipsdspr2
3702         ;;
3703         24kec|34kc|1004kc)
3704             disable mipsfpu
3705             disable mipsdspr2
3706         ;;
3707         24kef*|34kf*|1004kf*)
3708             disable mipsdspr2
3709         ;;
3710         74kc)
3711             disable mipsfpu
3712         ;;
3713     esac
3714
3715 elif enabled ppc; then
3716
3717     disable ldbrx
3718     disable vsx
3719
3720     case $(tolower $cpu) in
3721         601|ppc601|powerpc601)
3722             cpuflags="-mcpu=601"
3723             disable altivec
3724         ;;
3725         603*|ppc603*|powerpc603*)
3726             cpuflags="-mcpu=603"
3727             disable altivec
3728         ;;
3729         604*|ppc604*|powerpc604*)
3730             cpuflags="-mcpu=604"
3731             disable altivec
3732         ;;
3733         g3|75*|ppc75*|powerpc75*)
3734             cpuflags="-mcpu=750"
3735             disable altivec
3736         ;;
3737         g4|745*|ppc745*|powerpc745*)
3738             cpuflags="-mcpu=7450"
3739         ;;
3740         74*|ppc74*|powerpc74*)
3741             cpuflags="-mcpu=7400"
3742         ;;
3743         g5|970|ppc970|powerpc970)
3744             cpuflags="-mcpu=970"
3745         ;;
3746         power[3-8]*)
3747             cpuflags="-mcpu=$cpu"
3748         ;;
3749         cell)
3750             cpuflags="-mcpu=cell"
3751             enable ldbrx
3752         ;;
3753         e500mc)
3754             cpuflags="-mcpu=e500mc"
3755             disable altivec
3756         ;;
3757         e500v2)
3758             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3759             disable altivec
3760             disable dcbzl
3761         ;;
3762         e500)
3763             cpuflags="-mcpu=8540 -mhard-float"
3764             disable altivec
3765             disable dcbzl
3766         ;;
3767     esac
3768
3769 elif enabled sparc; then
3770
3771     case $cpu in
3772         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3773             cpuflags="-mcpu=$cpu"
3774         ;;
3775         ultrasparc*|niagara[234])
3776             cpuflags="-mcpu=$cpu"
3777         ;;
3778     esac
3779
3780 elif enabled x86; then
3781
3782     case $cpu in
3783         i[345]86|pentium)
3784             cpuflags="-march=$cpu"
3785             disable mmx
3786         ;;
3787         # targets that do NOT support nopl and conditional mov (cmov)
3788         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3789             cpuflags="-march=$cpu"
3790             disable i686
3791         ;;
3792         # targets that do support nopl and conditional mov (cmov)
3793         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3794         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3795             cpuflags="-march=$cpu"
3796             enable i686
3797             enable fast_cmov
3798         ;;
3799         # targets that do support conditional mov but on which it's slow
3800         pentium4|pentium4m|prescott|nocona)
3801             cpuflags="-march=$cpu"
3802             enable i686
3803             disable fast_cmov
3804         ;;
3805     esac
3806
3807 fi
3808
3809 if [ "$cpu" != generic ]; then
3810     add_cflags  $cpuflags
3811     add_asflags $cpuflags
3812 fi
3813
3814 # compiler sanity check
3815 check_exec <<EOF
3816 int main(void){ return 0; }
3817 EOF
3818 if test "$?" != 0; then
3819     echo "$cc is unable to create an executable file."
3820     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3821         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3822         echo "Only do this if you know what cross compiling means."
3823     fi
3824     die "C compiler test failed."
3825 fi
3826
3827 add_cppflags -D_ISOC99_SOURCE
3828 add_cxxflags -D__STDC_CONSTANT_MACROS
3829 check_cflags -std=c99
3830 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3831 #include <stdlib.h>
3832 EOF
3833 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3834 #include <stdlib.h>
3835 EOF
3836
3837 add_host_cppflags -D_ISOC99_SOURCE
3838 check_host_cflags -std=c99
3839 check_host_cflags -Wall
3840 check_host_cflags -O3
3841
3842 check_64bit(){
3843     arch32=$1
3844     arch64=$2
3845     expr=$3
3846     check_code cc "" "int test[2*($expr) - 1]" &&
3847         subarch=$arch64 || subarch=$arch32
3848 }
3849
3850 case "$arch" in
3851     aarch64|alpha|ia64)
3852         spic=$shared
3853     ;;
3854     mips)
3855         check_64bit mips mips64 '_MIPS_SIM > 1'
3856         spic=$shared
3857     ;;
3858     parisc)
3859         check_64bit parisc parisc64 'sizeof(void *) > 4'
3860         spic=$shared
3861     ;;
3862     ppc)
3863         check_64bit ppc ppc64 'sizeof(void *) > 4'
3864         spic=$shared
3865     ;;
3866     s390)
3867         check_64bit s390 s390x 'sizeof(void *) > 4'
3868         spic=$shared
3869     ;;
3870     sparc)
3871         check_64bit sparc sparc64 'sizeof(void *) > 4'
3872         spic=$shared
3873     ;;
3874     x86)
3875         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3876         if test "$subarch" = "x86_64"; then
3877             spic=$shared
3878         fi
3879     ;;
3880     ppc)
3881         check_cc <<EOF && subarch="ppc64"
3882         int test[(int)sizeof(char*) - 7];
3883 EOF
3884     ;;
3885 esac
3886
3887 enable $subarch
3888 enabled spic && enable_weak pic
3889
3890 # OS specific
3891 case $target_os in
3892     aix)
3893         SHFLAGS=-shared
3894         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3895         enabled shared && add_ldflags -Wl,-brtl
3896         ;;
3897     android)
3898         disable symver
3899         SLIB_INSTALL_NAME='$(SLIBNAME)'
3900         SLIB_INSTALL_LINKS=
3901         # soname not set on purpose
3902         SHFLAGS=-shared
3903         ;;
3904     haiku)
3905         prefix_default="/boot/common"
3906         network_extralibs="-lnetwork"
3907         host_libs=
3908         ;;
3909     sunos)
3910         SHFLAGS='-shared -Wl,-h,$$(@F)'
3911         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3912         network_extralibs="-lsocket -lnsl"
3913         # When using suncc to build, the Solaris linker will mark
3914         # an executable with each instruction set encountered by
3915         # the Solaris assembler.  As our libraries contain their own
3916         # guards for processor-specific code, instead suppress
3917         # generation of the HWCAPS ELF section on Solaris x86 only.
3918         enabled_all suncc x86 &&
3919             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3920             add_ldflags -Wl,-M,mapfile
3921         nm_default='nm -P -g'
3922         ;;
3923     netbsd)
3924         disable symver
3925         oss_indev_extralibs="-lossaudio"
3926         oss_outdev_extralibs="-lossaudio"
3927         enabled gcc || check_ldflags -Wl,-zmuldefs
3928         ;;
3929     openbsd|bitrig)
3930         disable symver
3931         SHFLAGS='-shared'
3932         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3933         SLIB_INSTALL_LINKS=
3934         oss_indev_extralibs="-lossaudio"
3935         oss_outdev_extralibs="-lossaudio"
3936         ;;
3937     dragonfly)
3938         disable symver
3939         ;;
3940     freebsd)
3941         ;;
3942     bsd/os)
3943         add_extralibs -lpoll -lgnugetopt
3944         strip="strip -d"
3945         ;;
3946     darwin)
3947         test "${as#*gas-preprocessor.pl}" != "$as" || gas="${gas:=gas-preprocessor.pl} ${as:=$cc}"
3948         enabled ppc && add_asflags -force_cpusubtype_ALL
3949         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3950         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3951         strip="${strip} -x"
3952         add_ldflags -Wl,-dynamic,-search_paths_first
3953         SLIBSUF=".dylib"
3954         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3955         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3956         objformat="macho"
3957         enabled x86_64 && objformat="macho64"
3958         enabled_any pic shared ||
3959             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3960         ;;
3961     mingw32*)
3962         if test $target_os = "mingw32ce"; then
3963             disable network
3964         else
3965             target_os=mingw32
3966         fi
3967         LIBTARGET=i386
3968         if enabled x86_64; then
3969             LIBTARGET="i386:x86-64"
3970         elif enabled arm; then
3971             LIBTARGET=arm-wince
3972         fi
3973         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3974         check_ldflags -Wl,--nxcompat
3975         check_ldflags -Wl,--dynamicbase
3976         shlibdir_default="$bindir_default"
3977         SLIBPREF=""
3978         SLIBSUF=".dll"
3979         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3980         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3981         dlltool="${cross_prefix}dlltool"
3982         if check_cmd lib.exe -list; then
3983             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3984             if enabled x86_64; then
3985                 LIBTARGET=x64
3986             fi
3987         elif check_cmd $dlltool --version; then
3988             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3989         fi
3990         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3991         SLIB_INSTALL_LINKS=
3992         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3993         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3994         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3995         objformat="win32"
3996         ranlib=:
3997         enable dos_paths
3998         ;;
3999     win32|win64)
4000         disable symver
4001         if enabled shared; then
4002             # Link to the import library instead of the normal static library
4003             # for shared libs.
4004             LD_LIB='%.lib'
4005             # Cannot build both shared and static libs with MSVC or icl.
4006             disable static
4007         fi
4008         shlibdir_default="$bindir_default"
4009         SLIBPREF=""
4010         SLIBSUF=".dll"
4011         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4012         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4013         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
4014         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4015         SLIB_INSTALL_LINKS=
4016         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
4017         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
4018         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
4019         objformat="win32"
4020         ranlib=:
4021         enable dos_paths
4022         ;;
4023     cygwin*)
4024         target_os=cygwin
4025         shlibdir_default="$bindir_default"
4026         SLIBPREF="cyg"
4027         SLIBSUF=".dll"
4028         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
4029         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
4030         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
4031         SLIB_INSTALL_LINKS=
4032         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
4033         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
4034         objformat="win32"
4035         enable dos_paths
4036         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
4037         ;;
4038     *-dos|freedos|opendos)
4039         network_extralibs="-lsocket"
4040         objformat="coff"
4041         enable dos_paths
4042         add_cppflags -U__STRICT_ANSI__
4043         ;;
4044     linux)
4045         enable dv1394
4046         ;;
4047     irix*)
4048         target_os=irix
4049         ranlib="echo ignoring ranlib"
4050         ;;
4051     os/2*)
4052         strip="lxlite -CS"
4053         ln_s="cp -f"
4054         objformat="aout"
4055         add_cppflags -D_GNU_SOURCE
4056         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4057         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4058         LIBSUF="_s.a"
4059         SLIBPREF=""
4060         SLIBSUF=".dll"
4061         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4062      &nb