configure: arm: do not enable fast-unaligned if it is explicitly disabled via commandline
[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 [$target_os]
272   --target-exec=CMD        command to run executables on target
273   --target-path=DIR        path to view of build directory on target
274   --target-samples=DIR     path to samples directory on target
275   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
276   --toolchain=NAME         set tool defaults according to NAME
277   --pkg-config=PKGCONFIG   use pkg-config tool PKGCONFIG [$pkg_config_default]
278   --nm=NM                  use nm tool NM [$nm_default]
279   --ar=AR                  use archive tool AR [$ar_default]
280   --as=AS                  use assembler AS [$as_default]
281   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
282   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
283   --cc=CC                  use C compiler CC [$cc_default]
284   --cxx=CXX                use C compiler CXX [$cxx_default]
285   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
286   --ld=LD                  use linker LD [$ld_default]
287   --pkg-config=PKGCONF     use pkg-config PKGCONF [$pkg_config_default]
288   --pkg-config-flags=FLAGS pass additional flags to pkgconf []
289   --ranlib=RANLIB          use ranlib RANLIB [$ranlib_default]
290   --host-cc=HOSTCC         use host C compiler HOSTCC
291   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
292   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
293   --host-ld=HOSTLD         use host linker HOSTLD
294   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
295   --host-libs=HLIBS        use libs HLIBS when linking for host
296   --host-os=OS             compiler host OS [$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
318 Optimization options (experts only):
319   --disable-asm            disable all assembler optimizations
320   --disable-altivec        disable AltiVec optimizations
321   --disable-amd3dnow       disable 3DNow! optimizations
322   --disable-amd3dnowext    disable 3DNow! extended optimizations
323   --disable-mmx            disable MMX optimizations
324   --disable-mmxext         disable MMXEXT optimizations
325   --disable-sse            disable SSE optimizations
326   --disable-sse2           disable SSE2 optimizations
327   --disable-sse3           disable SSE3 optimizations
328   --disable-ssse3          disable SSSE3 optimizations
329   --disable-sse4           disable SSE4 optimizations
330   --disable-sse42          disable SSE4.2 optimizations
331   --disable-avx            disable AVX optimizations
332   --disable-xop            disable XOP optimizations
333   --disable-fma3           disable FMA3 optimizations
334   --disable-fma4           disable FMA4 optimizations
335   --disable-avx2           disable AVX2 optimizations
336   --disable-armv5te        disable armv5te optimizations
337   --disable-armv6          disable armv6 optimizations
338   --disable-armv6t2        disable armv6t2 optimizations
339   --disable-vfp            disable VFP optimizations
340   --disable-neon           disable NEON optimizations
341   --disable-inline-asm     disable use of inline assembler
342   --disable-yasm           disable use of yasm assembler
343   --disable-mips32r2       disable MIPS32R2 optimizations
344   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
345   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
346   --disable-mipsfpu        disable floating point MIPS optimizations
347   --disable-fast-unaligned consider unaligned accesses slow
348
349 Developer options (useful when working on FFmpeg itself):
350   --disable-debug          disable debugging symbols
351   --enable-debug=LEVEL     set the debug level [$debuglevel]
352   --disable-optimizations  disable compiler optimizations
353   --enable-extra-warnings  enable more compiler warnings
354   --disable-stripping      disable stripping of executables and shared libraries
355   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
356                            2 causes a slowdown at runtime.
357   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
358   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
359                            leaks and errors, using the specified valgrind binary.
360                            Cannot be combined with --target-exec
361   --enable-ftrapv          Trap arithmetic overflows
362   --samples=PATH           location of test samples for FATE, if not set use
363                            \$FATE_SAMPLES at make invocation time.
364   --enable-neon-clobber-test check NEON registers for clobbering (should be
365                            used only for debugging purposes)
366   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
367                            should be used only for debugging purposes)
368   --enable-random          randomly enable/disable components
369   --disable-random
370   --enable-random=LIST     randomly enable/disable specific components or
371   --disable-random=LIST    component groups. LIST is a comma-separated list
372                            of NAME[:PROB] entries where NAME is a component
373                            (group) and PROB the probability associated with
374                            NAME (default 0.5).
375   --random-seed=VALUE      seed value for --enable/disable-random
376
377 NOTE: Object files are built at the place where configure is launched.
378 EOF
379   exit 0
380 }
381
382 quotes='""'
383
384 log(){
385     echo "$@" >> $logfile
386 }
387
388 log_file(){
389     log BEGIN $1
390     pr -n -t $1 >> $logfile
391     log END $1
392 }
393
394 echolog(){
395     log "$@"
396     echo "$@"
397 }
398
399 warn(){
400     log "WARNING: $*"
401     WARNINGS="${WARNINGS}WARNING: $*\n"
402 }
403
404 die(){
405     echolog "$@"
406     cat <<EOF
407
408 If you think configure made a mistake, make sure you are using the latest
409 version from Git.  If the latest version fails, report the problem to the
410 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
411 EOF
412     if disabled logging; then
413         cat <<EOF
414 Rerun configure with logging enabled (do not use --disable-logging), and
415 include the log this produces with your report.
416 EOF
417     else
418         cat <<EOF
419 Include the log file "$logfile" produced by configure as this will help
420 solving the problem.
421 EOF
422     fi
423     exit 1
424 }
425
426 # Avoid locale weirdness, besides we really just want to translate ASCII.
427 toupper(){
428     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
429 }
430
431 tolower(){
432     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
433 }
434
435 c_escape(){
436     echo "$*" | sed 's/["\\]/\\\0/g'
437 }
438
439 sh_quote(){
440     v=$(echo "$1" | sed "s/'/'\\\\''/g")
441     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
442     echo "$v"
443 }
444
445 cleanws(){
446     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\r//g'
447 }
448
449 filter(){
450     pat=$1
451     shift
452     for v; do
453         eval "case $v in $pat) echo $v ;; esac"
454     done
455 }
456
457 filter_out(){
458     pat=$1
459     shift
460     for v; do
461         eval "case $v in $pat) ;; *) echo $v ;; esac"
462     done
463 }
464
465 map(){
466     m=$1
467     shift
468     for v; do eval $m; done
469 }
470
471 add_suffix(){
472     suffix=$1
473     shift
474     for v; do echo ${v}${suffix}; done
475 }
476
477 set_all(){
478     value=$1
479     shift
480     for var in $*; do
481         eval $var=$value
482     done
483 }
484
485 set_weak(){
486     value=$1
487     shift
488     for var; do
489         eval : \${$var:=$value}
490     done
491 }
492
493 sanitize_var_name(){
494     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
495 }
496
497 set_safe(){
498     var=$1
499     shift
500     eval $(sanitize_var_name "$var")='$*'
501 }
502
503 get_safe(){
504     eval echo \$$(sanitize_var_name "$1")
505 }
506
507 pushvar(){
508     for pvar in $*; do
509         eval level=\${${pvar}_level:=0}
510         eval ${pvar}_${level}="\$$pvar"
511         eval ${pvar}_level=$(($level+1))
512     done
513 }
514
515 popvar(){
516     for pvar in $*; do
517         eval level=\${${pvar}_level:-0}
518         test $level = 0 && continue
519         eval level=$(($level-1))
520         eval $pvar="\${${pvar}_${level}}"
521         eval ${pvar}_level=$level
522         eval unset ${pvar}_${level}
523     done
524 }
525
526 enable(){
527     set_all yes $*
528 }
529
530 disable(){
531     set_all no $*
532 }
533
534 enable_weak(){
535     set_weak yes $*
536 }
537
538 disable_weak(){
539     set_weak no $*
540 }
541
542 enable_safe(){
543     for var; do
544         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
545     done
546 }
547
548 disable_safe(){
549     for var; do
550         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
551     done
552 }
553
554 do_enable_deep(){
555     for var; do
556         enabled $var && continue
557         eval sel="\$${var}_select"
558         eval sgs="\$${var}_suggest"
559         pushvar var sgs
560         enable_deep $sel
561         popvar sgs
562         enable_deep_weak $sgs
563         popvar var
564     done
565 }
566
567 enable_deep(){
568     do_enable_deep $*
569     enable $*
570 }
571
572 enable_deep_weak(){
573     for var; do
574         disabled $var && continue
575         pushvar var
576         do_enable_deep $var
577         popvar var
578         enable_weak $var
579     done
580 }
581
582 enabled(){
583     test "${1#!}" = "$1" && op== || op=!=
584     eval test "x\$${1#!}" $op "xyes"
585 }
586
587 disabled(){
588     test "${1#!}" = "$1" && op== || op=!=
589     eval test "x\$${1#!}" $op "xno"
590 }
591
592 enabled_all(){
593     for opt; do
594         enabled $opt || return 1
595     done
596 }
597
598 disabled_all(){
599     for opt; do
600         disabled $opt || return 1
601     done
602 }
603
604 enabled_any(){
605     for opt; do
606         enabled $opt && return 0
607     done
608 }
609
610 disabled_any(){
611     for opt; do
612         disabled $opt && return 0
613     done
614     return 1
615 }
616
617 set_default(){
618     for opt; do
619         eval : \${$opt:=\$${opt}_default}
620     done
621 }
622
623 is_in(){
624     value=$1
625     shift
626     for var in $*; do
627         [ $var = $value ] && return 0
628     done
629     return 1
630 }
631
632 do_check_deps(){
633     for cfg; do
634         cfg="${cfg#!}"
635         enabled ${cfg}_checking && die "Circular dependency for $cfg."
636         disabled ${cfg}_checking && continue
637         enable ${cfg}_checking
638         append allopts $cfg
639
640         eval dep_all="\$${cfg}_deps"
641         eval dep_any="\$${cfg}_deps_any"
642         eval dep_sel="\$${cfg}_select"
643         eval dep_sgs="\$${cfg}_suggest"
644         eval dep_ifa="\$${cfg}_if"
645         eval dep_ifn="\$${cfg}_if_any"
646
647         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
648         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
649         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
650
651         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
652         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
653         enabled_all  $dep_all || disable $cfg
654         enabled_any  $dep_any || disable $cfg
655         disabled_any $dep_sel && disable $cfg
656
657         if enabled $cfg; then
658             enable_deep $dep_sel
659             enable_deep_weak $dep_sgs
660         fi
661
662         disable ${cfg}_checking
663     done
664 }
665
666 check_deps(){
667     unset allopts
668
669     do_check_deps "$@"
670
671     for cfg in $allopts; do
672         enabled $cfg || continue
673         eval dep_extralibs="\$${cfg}_extralibs"
674         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
675     done
676 }
677
678 print_config(){
679     pfx=$1
680     files=$2
681     shift 2
682     map 'eval echo "$v \${$v:-no}"' "$@" |
683     awk "BEGIN { split(\"$files\", files) }
684         {
685             c = \"$pfx\" toupper(\$1);
686             v = \$2;
687             sub(/yes/, 1, v);
688             sub(/no/,  0, v);
689             for (f in files) {
690                 file = files[f];
691                 if (file ~ /\\.h\$/) {
692                     printf(\"#define %s %d\\n\", c, v) >>file;
693                 } else if (file ~ /\\.asm\$/) {
694                     printf(\"%%define %s %d\\n\", c, v) >>file;
695                 } else if (file ~ /\\.mak\$/) {
696                     n = -v ? \"\" : \"!\";
697                     printf(\"%s%s=yes\\n\", n, c) >>file;
698                 } else if (file ~ /\\.texi\$/) {
699                     pre = -v ? \"\" : \"@c \";
700                     yesno = \$2;
701                     c2 = tolower(c);
702                     gsub(/_/, \"-\", c2);
703                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
704                 }
705             }
706         }"
707 }
708
709 print_enabled(){
710     suf=$1
711     shift
712     for v; do
713         enabled $v && printf "%s\n" ${v%$suf};
714     done
715 }
716
717 append(){
718     var=$1
719     shift
720     eval "$var=\"\$$var $*\""
721 }
722
723 prepend(){
724     var=$1
725     shift
726     eval "$var=\"$* \$$var\""
727 }
728
729 unique(){
730     var=$1
731     uniq_list=""
732     for tok in $(eval echo \$$var); do
733         uniq_list="$(filter_out $tok $uniq_list) $tok"
734     done
735     eval "$var=\"${uniq_list}\""
736 }
737
738 add_cppflags(){
739     append CPPFLAGS "$@"
740 }
741
742 add_cflags(){
743     append CFLAGS $($cflags_filter "$@")
744 }
745
746 add_cxxflags(){
747     append CXXFLAGS $($cflags_filter "$@")
748 }
749
750 add_asflags(){
751     append ASFLAGS $($asflags_filter "$@")
752 }
753
754 add_ldflags(){
755     append LDFLAGS $($ldflags_filter "$@")
756 }
757
758 add_stripflags(){
759     append ASMSTRIPFLAGS "$@"
760 }
761
762 add_extralibs(){
763     prepend extralibs $($ldflags_filter "$@")
764 }
765
766 add_host_cppflags(){
767     append host_cppflags "$@"
768 }
769
770 add_host_cflags(){
771     append host_cflags $($host_cflags_filter "$@")
772 }
773
774 add_host_ldflags(){
775     append host_ldflags $($host_ldflags_filter "$@")
776 }
777
778 add_compat(){
779     append compat_objs $1
780     shift
781     map 'add_cppflags -D$v' "$@"
782 }
783
784 check_cmd(){
785     log "$@"
786     "$@" >> $logfile 2>&1
787 }
788
789 check_stat(){
790     log check_stat "$@"
791     stat "$1" >> $logfile 2>&1
792 }
793
794 cc_o(){
795     eval printf '%s\\n' $CC_O
796 }
797
798 cc_e(){
799     eval printf '%s\\n' $CC_E
800 }
801
802 check_cc(){
803     log check_cc "$@"
804     cat > $TMPC
805     log_file $TMPC
806     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
807 }
808
809 check_cxx(){
810     log check_cxx "$@"
811     cat > $TMPCPP
812     log_file $TMPCPP
813     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
814 }
815
816 check_oc(){
817     log check_oc "$@"
818     cat > $TMPM
819     log_file $TMPM
820     check_cmd $cc -Werror=missing-prototypes $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPM
821 }
822
823 check_cpp(){
824     log check_cpp "$@"
825     cat > $TMPC
826     log_file $TMPC
827     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
828 }
829
830 as_o(){
831     eval printf '%s\\n' $AS_O
832 }
833
834 check_as(){
835     log check_as "$@"
836     cat > $TMPS
837     log_file $TMPS
838     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
839 }
840
841 check_inline_asm(){
842     log check_inline_asm "$@"
843     name="$1"
844     code="$2"
845     shift 2
846     disable $name
847     check_cc "$@" <<EOF && enable $name
848 void foo(void){ __asm__ volatile($code); }
849 EOF
850 }
851
852 check_insn(){
853     log check_insn "$@"
854     check_inline_asm ${1}_inline "\"$2\""
855     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
856 }
857
858 check_yasm(){
859     log check_yasm "$@"
860     echo "$1" > $TMPS
861     log_file $TMPS
862     shift 1
863     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
864 }
865
866 ld_o(){
867     eval printf '%s\\n' $LD_O
868 }
869
870 check_ld(){
871     log check_ld "$@"
872     type=$1
873     shift 1
874     flags=$(filter_out '-l*|*.so' $@)
875     libs=$(filter '-l*|*.so' $@)
876     check_$type $($cflags_filter $flags) || return
877     flags=$($ldflags_filter $flags)
878     libs=$($ldflags_filter $libs)
879     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
880 }
881
882 print_include(){
883     hdr=$1
884     test "${hdr%.h}" = "${hdr}" &&
885         echo "#include $hdr"    ||
886         echo "#include <$hdr>"
887 }
888
889 check_code(){
890     log check_code "$@"
891     check=$1
892     headers=$2
893     code=$3
894     shift 3
895     {
896         for hdr in $headers; do
897             print_include $hdr
898         done
899         echo "int main(void) { $code; return 0; }"
900     } | check_$check "$@"
901 }
902
903 check_cppflags(){
904     log check_cppflags "$@"
905     check_cc "$@" <<EOF && append CPPFLAGS "$@"
906 int x;
907 EOF
908 }
909
910 test_cflags(){
911     log test_cflags "$@"
912     set -- $($cflags_filter "$@")
913     check_cc "$@" <<EOF
914 int x;
915 EOF
916 }
917
918 check_cflags(){
919     log check_cflags "$@"
920     test_cflags "$@" && add_cflags "$@"
921 }
922
923 check_cxxflags(){
924     log check_cxxflags "$@"
925     set -- $($cflags_filter "$@")
926     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
927 int x;
928 EOF
929 }
930
931 test_ldflags(){
932     log test_ldflags "$@"
933     check_ld "cc" "$@" <<EOF
934 int main(void){ return 0; }
935 EOF
936 }
937
938 check_ldflags(){
939     log check_ldflags "$@"
940     test_ldflags "$@" && add_ldflags "$@"
941 }
942
943 test_stripflags(){
944     log test_stripflags "$@"
945     # call check_cc to get a fresh TMPO
946     check_cc <<EOF
947 int main(void) { return 0; }
948 EOF
949     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
950 }
951
952 check_stripflags(){
953     log check_stripflags "$@"
954     test_stripflags "$@" && add_stripflags "$@"
955 }
956
957 check_header(){
958     log check_header "$@"
959     header=$1
960     shift
961     disable_safe $header
962     check_cpp "$@" <<EOF && enable_safe $header
963 #include <$header>
964 int x;
965 EOF
966 }
967
968 check_header_oc(){
969     log check_header_oc "$@"
970     rm -f -- "$TMPO"
971     header=$1
972     shift
973     disable_safe $header
974     {
975        echo "#include <$header>"
976        echo "int main(void) { return 0; }"
977     } | check_oc && check_stat "$TMPO" && enable_safe $headers
978 }
979
980 check_func(){
981     log check_func "$@"
982     func=$1
983     shift
984     disable $func
985     check_ld "cc" "$@" <<EOF && enable $func
986 extern int $func();
987 int main(void){ $func(); }
988 EOF
989 }
990
991 check_mathfunc(){
992     log check_mathfunc "$@"
993     func=$1
994     narg=$2
995     shift 2
996     test $narg = 2 && args="f, g" || args="f"
997     disable $func
998     check_ld "cc" "$@" <<EOF && enable $func
999 #include <math.h>
1000 float foo(float f, float g) { return $func($args); }
1001 int main(void){ return (int) foo; }
1002 EOF
1003 }
1004
1005 check_func_headers(){
1006     log check_func_headers "$@"
1007     headers=$1
1008     funcs=$2
1009     shift 2
1010     {
1011         for hdr in $headers; do
1012             print_include $hdr
1013         done
1014         for func in $funcs; do
1015             echo "long check_$func(void) { return (long) $func; }"
1016         done
1017         echo "int main(void) { return 0; }"
1018     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
1019 }
1020
1021 check_class_headers_cpp(){
1022     log check_class_headers_cpp "$@"
1023     headers=$1
1024     classes=$2
1025     shift 2
1026     {
1027         for hdr in $headers; do
1028             echo "#include <$hdr>"
1029         done
1030         echo "int main(void) { "
1031         i=1
1032         for class in $classes; do
1033             echo "$class obj$i;"
1034             i=$(expr $i + 1)
1035         done
1036         echo "return 0; }"
1037     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
1038 }
1039
1040 check_cpp_condition(){
1041     log check_cpp_condition "$@"
1042     header=$1
1043     condition=$2
1044     shift 2
1045     check_cpp "$@" <<EOF
1046 #include <$header>
1047 #if !($condition)
1048 #error "unsatisfied condition: $condition"
1049 #endif
1050 EOF
1051 }
1052
1053 check_lib(){
1054     log check_lib "$@"
1055     header="$1"
1056     func="$2"
1057     shift 2
1058     check_header $header && check_func $func "$@" && add_extralibs "$@"
1059 }
1060
1061 check_lib2(){
1062     log check_lib2 "$@"
1063     headers="$1"
1064     funcs="$2"
1065     shift 2
1066     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1067 }
1068
1069 check_lib_cpp(){
1070     log check_lib_cpp "$@"
1071     headers="$1"
1072     classes="$2"
1073     shift 2
1074     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1075 }
1076
1077 check_pkg_config(){
1078     log check_pkg_config "$@"
1079     pkgandversion="$1"
1080     pkg="${1%% *}"
1081     headers="$2"
1082     funcs="$3"
1083     shift 3
1084     check_cmd $pkg_config --exists --print-errors $pkgandversion || return
1085     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1086     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1087     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1088         set_safe ${pkg}_cflags $pkg_cflags   &&
1089         set_safe ${pkg}_libs   $pkg_libs
1090 }
1091
1092 check_exec(){
1093     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1094 }
1095
1096 check_exec_crash(){
1097     code=$(cat)
1098
1099     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1100     # are safe but may not be available everywhere.  Thus we use
1101     # raise(SIGTERM) instead.  The check is run in a subshell so we
1102     # can redirect the "Terminated" message from the shell.  SIGBUS
1103     # is not defined by standard C so it is used conditionally.
1104
1105     (check_exec "$@") >> $logfile 2>&1 <<EOF
1106 #include <signal.h>
1107 static void sighandler(int sig){
1108     raise(SIGTERM);
1109 }
1110 int foo(void){
1111     $code
1112 }
1113 int (*func_ptr)(void) = foo;
1114 int main(void){
1115     signal(SIGILL, sighandler);
1116     signal(SIGFPE, sighandler);
1117     signal(SIGSEGV, sighandler);
1118 #ifdef SIGBUS
1119     signal(SIGBUS, sighandler);
1120 #endif
1121     return func_ptr();
1122 }
1123 EOF
1124 }
1125
1126 check_type(){
1127     log check_type "$@"
1128     headers=$1
1129     type=$2
1130     shift 2
1131     disable_safe "$type"
1132     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1133 }
1134
1135 check_struct(){
1136     log check_struct "$@"
1137     headers=$1
1138     struct=$2
1139     member=$3
1140     shift 3
1141     disable_safe "${struct}_${member}"
1142     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1143         enable_safe "${struct}_${member}"
1144 }
1145
1146 check_builtin(){
1147     log check_builtin "$@"
1148     name=$1
1149     headers=$2
1150     builtin=$3
1151     shift 3
1152     disable "$name"
1153     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1154 }
1155
1156 check_compile_assert(){
1157     log check_compile_assert "$@"
1158     name=$1
1159     headers=$2
1160     condition=$3
1161     shift 3
1162     disable "$name"
1163     check_code cc "$headers" "char c[2 * !!($condition) - 1]" "$@" && enable "$name"
1164 }
1165
1166 require(){
1167     name="$1"
1168     header="$2"
1169     func="$3"
1170     shift 3
1171     check_lib $header $func "$@" || die "ERROR: $name not found"
1172 }
1173
1174 require2(){
1175     name="$1"
1176     headers="$2"
1177     func="$3"
1178     shift 3
1179     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1180 }
1181
1182 require_cpp(){
1183     name="$1"
1184     headers="$2"
1185     classes="$3"
1186     shift 3
1187     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1188 }
1189
1190 require_pkg_config(){
1191     pkg="$1"
1192     check_pkg_config "$@" || die "ERROR: $pkg not found"
1193     add_cflags    $(get_safe ${pkg}_cflags)
1194     add_extralibs $(get_safe ${pkg}_libs)
1195 }
1196
1197 require_libfreetype(){
1198     log require_libfreetype "$@"
1199     pkg="freetype2"
1200     check_cmd $pkg_config --exists --print-errors $pkg \
1201       || die "ERROR: $pkg not found"
1202     pkg_cflags=$($pkg_config --cflags $pkg_config_flags $pkg)
1203     pkg_libs=$($pkg_config --libs $pkg_config_flags $pkg)
1204     {
1205         echo "#include <ft2build.h>"
1206         echo "#include FT_FREETYPE_H"
1207         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1208         echo "int main(void) { return 0; }"
1209     } | check_ld "cc" $pkg_cflags $pkg_libs \
1210       && set_safe ${pkg}_cflags $pkg_cflags \
1211       && set_safe ${pkg}_libs   $pkg_libs \
1212       || die "ERROR: $pkg not found"
1213     add_cflags    $(get_safe ${pkg}_cflags)
1214     add_extralibs $(get_safe ${pkg}_libs)
1215 }
1216
1217 hostcc_e(){
1218     eval printf '%s\\n' $HOSTCC_E
1219 }
1220
1221 hostcc_o(){
1222     eval printf '%s\\n' $HOSTCC_O
1223 }
1224
1225 check_host_cc(){
1226     log check_host_cc "$@"
1227     cat > $TMPC
1228     log_file $TMPC
1229     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1230 }
1231
1232 check_host_cpp(){
1233     log check_host_cpp "$@"
1234     cat > $TMPC
1235     log_file $TMPC
1236     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1237 }
1238
1239 check_host_cppflags(){
1240     log check_host_cppflags "$@"
1241     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1242 int x;
1243 EOF
1244 }
1245
1246 check_host_cflags(){
1247     log check_host_cflags "$@"
1248     set -- $($host_cflags_filter "$@")
1249     check_host_cc "$@" <<EOF && append host_cflags "$@"
1250 int x;
1251 EOF
1252 }
1253
1254 check_host_cpp_condition(){
1255     log check_host_cpp_condition "$@"
1256     header=$1
1257     condition=$2
1258     shift 2
1259     check_host_cpp "$@" <<EOF
1260 #include <$header>
1261 #if !($condition)
1262 #error "unsatisfied condition: $condition"
1263 #endif
1264 EOF
1265 }
1266
1267 apply(){
1268     file=$1
1269     shift
1270     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1271 }
1272
1273 cp_if_changed(){
1274     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1275     mkdir -p "$(dirname $2)"
1276     $cp_f "$1" "$2"
1277 }
1278
1279 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1280 # system-dependent things.
1281
1282 COMPONENT_LIST="
1283     bsfs
1284     decoders
1285     demuxers
1286     encoders
1287     filters
1288     hwaccels
1289     indevs
1290     muxers
1291     outdevs
1292     parsers
1293     protocols
1294 "
1295
1296 EXAMPLE_LIST="
1297     avio_reading_example
1298     decoding_encoding_example
1299     demuxing_decoding_example
1300     filter_audio_example
1301     filtering_audio_example
1302     filtering_video_example
1303     metadata_example
1304     muxing_example
1305     remuxing_example
1306     resampling_audio_example
1307     scaling_video_example
1308     transcode_aac_example
1309     transcoding_example
1310 "
1311
1312 EXTERNAL_LIBRARY_LIST="
1313     avisynth
1314     bzlib
1315     crystalhd
1316     decklink
1317     frei0r
1318     gnutls
1319     iconv
1320     ladspa
1321     libaacplus
1322     libass
1323     libbluray
1324     libbs2b
1325     libcaca
1326     libcdio
1327     libcelt
1328     libdc1394
1329     libfaac
1330     libfdk_aac
1331     libflite
1332     libfontconfig
1333     libfreetype
1334     libgme
1335     libgsm
1336     libiec61883
1337     libilbc
1338     libmodplug
1339     libmp3lame
1340     libnut
1341     libopencore_amrnb
1342     libopencore_amrwb
1343     libopencv
1344     libopenjpeg
1345     libopus
1346     libpulse
1347     libquvi
1348     librtmp
1349     libschroedinger
1350     libshine
1351     libsoxr
1352     libspeex
1353     libssh
1354     libstagefright_h264
1355     libtheora
1356     libtwolame
1357     libutvideo
1358     libv4l2
1359     libvidstab
1360     libvo_aacenc
1361     libvo_amrwbenc
1362     libvorbis
1363     libvpx
1364     libwavpack
1365     libwebp
1366     libx264
1367     libx265
1368     libxavs
1369     libxvid
1370     libzmq
1371     libzvbi
1372     openal
1373     opencl
1374     opengl
1375     openssl
1376     x11grab
1377     xlib
1378     zlib
1379 "
1380
1381 DOCUMENT_LIST="
1382     doc
1383     htmlpages
1384     manpages
1385     podpages
1386     txtpages
1387 "
1388
1389 FEATURE_LIST="
1390     ftrapv
1391     gray
1392     hardcoded_tables
1393     runtime_cpudetect
1394     safe_bitstream_reader
1395     shared
1396     small
1397     sram
1398     static
1399     swscale_alpha
1400 "
1401
1402 HWACCEL_LIST="
1403     dxva2
1404     vaapi
1405     vda
1406     vdpau
1407     xvmc
1408 "
1409
1410 LIBRARY_LIST="
1411     avcodec
1412     avdevice
1413     avfilter
1414     avformat
1415     avresample
1416     avutil
1417     postproc
1418     swresample
1419     swscale
1420 "
1421
1422 LICENSE_LIST="
1423     gpl
1424     nonfree
1425     version3
1426 "
1427
1428 PROGRAM_LIST="
1429     ffplay
1430     ffprobe
1431     ffserver
1432     ffmpeg
1433 "
1434
1435 SUBSYSTEM_LIST="
1436     dct
1437     dwt
1438     error_resilience
1439     fast_unaligned
1440     fft
1441     lsp
1442     lzo
1443     mdct
1444     network
1445     rdft
1446 "
1447
1448 CONFIG_LIST="
1449     $COMPONENT_LIST
1450     $DOCUMENT_LIST
1451     $EXAMPLE_LIST
1452     $EXTERNAL_LIBRARY_LIST
1453     $FEATURE_LIST
1454     $HWACCEL_LIST
1455     $LICENSE_LIST
1456     $LIBRARY_LIST
1457     $PROGRAM_LIST
1458     $SUBSYSTEM_LIST
1459     fontconfig
1460     incompatible_libav_abi
1461     memalign_hack
1462     memory_poisoning
1463     neon_clobber_test
1464     pic
1465     pod2man
1466     raise_major
1467     thumb
1468     xmm_clobber_test
1469 "
1470
1471 THREADS_LIST="
1472     pthreads
1473     os2threads
1474     w32threads
1475 "
1476
1477 ATOMICS_LIST="
1478     atomics_gcc
1479     atomics_suncc
1480     atomics_win32
1481 "
1482
1483 ARCH_LIST="
1484     aarch64
1485     alpha
1486     arm
1487     avr32
1488     avr32_ap
1489     avr32_uc
1490     bfin
1491     ia64
1492     m68k
1493     mips
1494     mips64
1495     parisc
1496     ppc
1497     ppc64
1498     s390
1499     sh4
1500     sparc
1501     sparc64
1502     tilegx
1503     tilepro
1504     tomi
1505     x86
1506     x86_32
1507     x86_64
1508 "
1509
1510 ARCH_EXT_LIST_ARM="
1511     armv5te
1512     armv6
1513     armv6t2
1514     armv8
1515     neon
1516     vfp
1517     vfpv3
1518 "
1519
1520 ARCH_EXT_LIST_MIPS="
1521     mipsfpu
1522     mips32r2
1523     mipsdspr1
1524     mipsdspr2
1525 "
1526
1527 ARCH_EXT_LIST_X86_SIMD="
1528     amd3dnow
1529     amd3dnowext
1530     avx
1531     avx2
1532     fma3
1533     fma4
1534     mmx
1535     mmxext
1536     sse
1537     sse2
1538     sse3
1539     sse4
1540     sse42
1541     ssse3
1542     xop
1543 "
1544
1545 ARCH_EXT_LIST_PPC="
1546     altivec
1547     dcbzl
1548     ldbrx
1549     ppc4xx
1550 "
1551
1552 ARCH_EXT_LIST_X86="
1553     $ARCH_EXT_LIST_X86_SIMD
1554     cpunop
1555     i686
1556 "
1557
1558 ARCH_EXT_LIST="
1559     $ARCH_EXT_LIST_ARM
1560     $ARCH_EXT_LIST_PPC
1561     $ARCH_EXT_LIST_X86
1562     $ARCH_EXT_LIST_MIPS
1563     loongson
1564 "
1565
1566 ARCH_FEATURES="
1567     aligned_stack
1568     fast_64bit
1569     fast_clz
1570     fast_cmov
1571     local_aligned_8
1572     local_aligned_16
1573     local_aligned_32
1574 "
1575
1576 BUILTIN_LIST="
1577     atomic_cas_ptr
1578     machine_rw_barrier
1579     MemoryBarrier
1580     mm_empty
1581     rdtsc
1582     sarestart
1583     sync_val_compare_and_swap
1584 "
1585 HAVE_LIST_CMDLINE="
1586     inline_asm
1587     symver
1588     yasm
1589 "
1590
1591 HAVE_LIST_PUB="
1592     bigendian
1593     fast_unaligned
1594     incompatible_libav_abi
1595 "
1596
1597 HEADERS_LIST="
1598     alsa_asoundlib_h
1599     altivec_h
1600     arpa_inet_h
1601     asm_types_h
1602     cdio_paranoia_h
1603     cdio_paranoia_paranoia_h
1604     CL_cl_h
1605     dev_bktr_ioctl_bt848_h
1606     dev_bktr_ioctl_meteor_h
1607     dev_ic_bt8xx_h
1608     dev_video_bktr_ioctl_bt848_h
1609     dev_video_meteor_ioctl_meteor_h
1610     direct_h
1611     dlfcn_h
1612     dxva_h
1613     ES2_gl_h
1614     gsm_h
1615     io_h
1616     mach_mach_time_h
1617     machine_ioctl_bt848_h
1618     machine_ioctl_meteor_h
1619     malloc_h
1620     openjpeg_1_5_openjpeg_h
1621     OpenGL_gl3_h
1622     poll_h
1623     sndio_h
1624     soundcard_h
1625     sys_mman_h
1626     sys_param_h
1627     sys_resource_h
1628     sys_select_h
1629     sys_soundcard_h
1630     sys_time_h
1631     sys_un_h
1632     sys_videoio_h
1633     termios_h
1634     unistd_h
1635     windows_h
1636     winsock2_h
1637 "
1638
1639 MATH_FUNCS="
1640     atanf
1641     atan2f
1642     cbrt
1643     cbrtf
1644     cosf
1645     exp2
1646     exp2f
1647     expf
1648     isinf
1649     isnan
1650     ldexpf
1651     llrint
1652     llrintf
1653     log2
1654     log2f
1655     log10f
1656     lrint
1657     lrintf
1658     powf
1659     rint
1660     round
1661     roundf
1662     sinf
1663     trunc
1664     truncf
1665 "
1666
1667 SYSTEM_FUNCS="
1668     access
1669     aligned_malloc
1670     clock_gettime
1671     closesocket
1672     CommandLineToArgvW
1673     CoTaskMemFree
1674     CryptGenRandom
1675     dlopen
1676     fcntl
1677     flt_lim
1678     fork
1679     getaddrinfo
1680     gethrtime
1681     getopt
1682     GetProcessAffinityMask
1683     GetProcessMemoryInfo
1684     GetProcessTimes
1685     getrusage
1686     getservbyport
1687     GetSystemTimeAsFileTime
1688     gettimeofday
1689     glob
1690     glXGetProcAddress
1691     inet_aton
1692     isatty
1693     jack_port_get_latency_range
1694     kbhit
1695     localtime_r
1696     lzo1x_999_compress
1697     mach_absolute_time
1698     MapViewOfFile
1699     memalign
1700     mkstemp
1701     mmap
1702     mprotect
1703     nanosleep
1704     PeekNamedPipe
1705     posix_memalign
1706     pthread_cancel
1707     sched_getaffinity
1708     SetConsoleTextAttribute
1709     setmode
1710     setrlimit
1711     Sleep
1712     strerror_r
1713     sysconf
1714     sysctl
1715     usleep
1716     VirtualAlloc
1717     wglGetProcAddress
1718 "
1719
1720 TOOLCHAIN_FEATURES="
1721     asm_mod_q
1722     attribute_may_alias
1723     attribute_packed
1724     ebp_available
1725     ebx_available
1726     gnu_as
1727     gnu_windres
1728     ibm_asm
1729     inline_asm_labels
1730     inline_asm_nonlocal_labels
1731     inline_asm_direct_symbol_refs
1732     pragma_deprecated
1733     rsync_contimeout
1734     symver_asm_label
1735     symver_gnu_asm
1736     vfp_args
1737     xform_asm
1738     xmm_clobbers
1739 "
1740
1741 TYPES_LIST="
1742     socklen_t
1743     struct_addrinfo
1744     struct_group_source_req
1745     struct_ip_mreq_source
1746     struct_ipv6_mreq
1747     struct_pollfd
1748     struct_rusage_ru_maxrss
1749     struct_sctp_event_subscribe
1750     struct_sockaddr_in6
1751     struct_sockaddr_sa_len
1752     struct_sockaddr_storage
1753     struct_stat_st_mtim_tv_nsec
1754     struct_v4l2_frmivalenum_discrete
1755 "
1756
1757 HAVE_LIST="
1758     $ARCH_EXT_LIST
1759     $(add_suffix _external $ARCH_EXT_LIST)
1760     $(add_suffix _inline   $ARCH_EXT_LIST)
1761     $ARCH_FEATURES
1762     $ATOMICS_LIST
1763     $BUILTIN_LIST
1764     $HAVE_LIST_CMDLINE
1765     $HAVE_LIST_PUB
1766     $HEADERS_LIST
1767     $MATH_FUNCS
1768     $SYSTEM_FUNCS
1769     $THREADS_LIST
1770     $TOOLCHAIN_FEATURES
1771     $TYPES_LIST
1772     atomics_native
1773     dos_paths
1774     dxva2api_cobj
1775     dxva2_lib
1776     libc_msvcrt
1777     libdc1394_1
1778     libdc1394_2
1779     makeinfo
1780     perl
1781     pod2man
1782     sdl
1783     texi2html
1784     threads
1785     vdpau_x11
1786     xlib
1787 "
1788
1789 # options emitted with CONFIG_ prefix but not available on the command line
1790 CONFIG_EXTRA="
1791     aandcttables
1792     ac3dsp
1793     audio_frame_queue
1794     cabac
1795     dsputil
1796     exif
1797     frame_thread_encoder
1798     gcrypt
1799     golomb
1800     gplv3
1801     h263dsp
1802     h264chroma
1803     h264dsp
1804     h264pred
1805     h264qpel
1806     hpeldsp
1807     huffman
1808     intrax8
1809     lgplv3
1810     llviddsp
1811     lpc
1812     mpegaudio
1813     mpegaudiodsp
1814     mpegvideo
1815     mpegvideoenc
1816     nettle
1817     rangecoder
1818     riffdec
1819     riffenc
1820     rtpdec
1821     rtpenc_chain
1822     sinewin
1823     tpeldsp
1824     videodsp
1825     vp3dsp
1826 "
1827
1828 CMDLINE_SELECT="
1829     $ARCH_EXT_LIST
1830     $CONFIG_LIST
1831     $HAVE_LIST_CMDLINE
1832     $THREADS_LIST
1833     asm
1834     cross_compile
1835     debug
1836     extra_warnings
1837     logging
1838     lto
1839     optimizations
1840     rpath
1841     stripping
1842 "
1843
1844 PATHS_LIST="
1845     bindir
1846     datadir
1847     docdir
1848     incdir
1849     libdir
1850     mandir
1851     prefix
1852     shlibdir
1853 "
1854
1855 CMDLINE_SET="
1856     $PATHS_LIST
1857     ar
1858     arch
1859     as
1860     assert_level
1861     build_suffix
1862     cc
1863     cpu
1864     cross_prefix
1865     cxx
1866     dep_cc
1867     extra_version
1868     gas
1869     host_cc
1870     host_cflags
1871     host_ld
1872     host_ldflags
1873     host_libs
1874     host_os
1875     install
1876     ld
1877     logfile
1878     malloc_prefix
1879     nm
1880     optflags
1881     pkg_config
1882     pkg_config_flags
1883     progs_suffix
1884     random_seed
1885     ranlib
1886     samples
1887     strip
1888     sysinclude
1889     sysroot
1890     target_exec
1891     target_os
1892     target_path
1893     target_samples
1894     tempprefix
1895     toolchain
1896     valgrind
1897     yasmexe
1898 "
1899
1900 CMDLINE_APPEND="
1901     extra_cflags
1902     extra_cxxflags
1903     host_cppflags
1904 "
1905
1906 # code dependency declarations
1907
1908 # architecture extensions
1909
1910 armv5te_deps="arm"
1911 armv6_deps="arm"
1912 armv6t2_deps="arm"
1913 armv8_deps="aarch64"
1914 neon_deps_any="aarch64 arm"
1915 vfp_deps_any="aarch64 arm"
1916 vfpv3_deps="vfp"
1917
1918 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1919
1920 mipsfpu_deps="mips"
1921 mips32r2_deps="mips"
1922 mipsdspr1_deps="mips"
1923 mipsdspr2_deps="mips"
1924
1925 altivec_deps="ppc"
1926 ppc4xx_deps="ppc"
1927
1928 cpunop_deps="i686"
1929 x86_64_select="i686"
1930 x86_64_suggest="fast_cmov"
1931
1932 amd3dnow_deps="mmx"
1933 amd3dnowext_deps="amd3dnow"
1934 i686_deps="x86"
1935 mmx_deps="x86"
1936 mmxext_deps="mmx"
1937 sse_deps="mmxext"
1938 sse2_deps="sse"
1939 sse3_deps="sse2"
1940 ssse3_deps="sse3"
1941 sse4_deps="ssse3"
1942 sse42_deps="sse4"
1943 avx_deps="sse42"
1944 xop_deps="avx"
1945 fma3_deps="avx"
1946 fma4_deps="avx"
1947 avx2_deps="avx"
1948
1949 mmx_external_deps="yasm"
1950 mmx_inline_deps="inline_asm"
1951 mmx_suggest="mmx_external mmx_inline"
1952
1953 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1954     eval dep=\$${ext}_deps
1955     eval ${ext}_external_deps='"${dep}_external"'
1956     eval ${ext}_inline_deps='"${dep}_inline"'
1957     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1958 done
1959
1960 aligned_stack_if_any="aarch64 ppc x86"
1961 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1962 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1963 fast_unaligned_if_any="aarch64 ppc x86"
1964
1965 need_memalign="altivec neon sse"
1966
1967 # system capabilities
1968
1969 symver_if_any="symver_asm_label symver_gnu_asm"
1970
1971 # threading support
1972 atomics_gcc_if="sync_val_compare_and_swap"
1973 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1974 atomics_win32_if="MemoryBarrier"
1975 atomics_native_if_any="$ATOMICS_LIST"
1976 w32threads_deps="atomics_native"
1977 threads_if_any="$THREADS_LIST"
1978
1979 # subsystems
1980 dct_select="rdft"
1981 error_resilience_select="dsputil"
1982 frame_thread_encoder_deps="encoders threads"
1983 mdct_select="fft"
1984 rdft_select="fft"
1985 mpegaudio_select="mpegaudiodsp"
1986 mpegaudiodsp_select="dct"
1987 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1988 mpegvideoenc_select="dsputil mpegvideo"
1989
1990 # decoders / encoders
1991 aac_decoder_select="mdct sinewin"
1992 aac_encoder_select="audio_frame_queue mdct sinewin"
1993 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1994 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1995 ac3_fixed_decoder_select="mdct ac3dsp ac3_parser dsputil"
1996 ac3_encoder_select="mdct ac3dsp dsputil"
1997 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1998 aic_decoder_select="dsputil golomb"
1999 alac_encoder_select="lpc"
2000 als_decoder_select="dsputil"
2001 amrnb_decoder_select="lsp"
2002 amrwb_decoder_select="lsp"
2003 amv_decoder_select="sp5x_decoder exif"
2004 amv_encoder_select="aandcttables"
2005 ape_decoder_select="dsputil"
2006 asv1_decoder_select="dsputil"
2007 asv1_encoder_select="dsputil"
2008 asv2_decoder_select="dsputil"
2009 asv2_encoder_select="dsputil"
2010 atrac1_decoder_select="mdct sinewin"
2011 atrac3_decoder_select="mdct"
2012 atrac3p_decoder_select="mdct sinewin"
2013 avrn_decoder_select="exif"
2014 bink_decoder_select="dsputil hpeldsp"
2015 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
2016 binkaudio_rdft_decoder_select="mdct rdft sinewin"
2017 cavs_decoder_select="dsputil golomb h264chroma videodsp"
2018 cllc_decoder_select="dsputil"
2019 comfortnoise_encoder_select="lpc"
2020 cook_decoder_select="dsputil mdct sinewin"
2021 cscd_decoder_select="lzo"
2022 cscd_decoder_suggest="zlib"
2023 dca_decoder_select="mdct"
2024 dirac_decoder_select="dsputil dwt golomb videodsp"
2025 dnxhd_decoder_select="dsputil"
2026 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
2027 dvvideo_decoder_select="dsputil"
2028 dvvideo_encoder_select="dsputil"
2029 dxa_decoder_select="zlib"
2030 eac3_decoder_select="ac3_decoder"
2031 eac3_encoder_select="ac3_encoder"
2032 eamad_decoder_select="aandcttables dsputil mpegvideo"
2033 eatgq_decoder_select="aandcttables"
2034 eatqi_decoder_select="aandcttables dsputil error_resilience mpegvideo"
2035 exr_decoder_select="zlib"
2036 ffv1_decoder_select="golomb rangecoder"
2037 ffv1_encoder_select="rangecoder"
2038 ffvhuff_decoder_select="huffyuv_decoder"
2039 ffvhuff_encoder_select="huffyuv_encoder"
2040 fic_decoder_select="golomb"
2041 flac_decoder_select="golomb"
2042 flac_encoder_select="dsputil golomb lpc"
2043 flashsv_decoder_select="zlib"
2044 flashsv_encoder_select="zlib"
2045 flashsv2_encoder_select="zlib"
2046 flashsv2_decoder_select="zlib"
2047 flv_decoder_select="h263_decoder"
2048 flv_encoder_select="h263_encoder"
2049 fourxm_decoder_select="dsputil"
2050 fraps_decoder_select="dsputil huffman"
2051 g2m_decoder_select="dsputil zlib"
2052 g729_decoder_select="dsputil"
2053 h261_decoder_select="error_resilience mpegvideo"
2054 h261_encoder_select="aandcttables mpegvideoenc"
2055 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
2056 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2057 h263i_decoder_select="h263_decoder"
2058 h263p_encoder_select="h263_encoder"
2059 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2060 h264_decoder_suggest="error_resilience"
2061 hevc_decoder_select="cabac dsputil golomb videodsp"
2062 huffyuv_decoder_select="dsputil llviddsp"
2063 huffyuv_encoder_select="dsputil huffman llviddsp"
2064 iac_decoder_select="imc_decoder"
2065 imc_decoder_select="dsputil fft mdct sinewin"
2066 indeo3_decoder_select="hpeldsp"
2067 interplay_video_decoder_select="hpeldsp"
2068 jpegls_decoder_select="golomb mjpeg_decoder"
2069 jpegls_encoder_select="golomb"
2070 jv_decoder_select="dsputil"
2071 lagarith_decoder_select="dsputil"
2072 ljpeg_encoder_select="aandcttables mpegvideoenc"
2073 loco_decoder_select="golomb"
2074 mdec_decoder_select="dsputil error_resilience mpegvideo"
2075 metasound_decoder_select="lsp mdct sinewin"
2076 mimic_decoder_select="dsputil hpeldsp"
2077 mjpeg_decoder_select="dsputil hpeldsp exif"
2078 mjpeg_encoder_select="aandcttables mpegvideoenc"
2079 mjpegb_decoder_select="mjpeg_decoder"
2080 mlp_decoder_select="mlp_parser"
2081 motionpixels_decoder_select="dsputil"
2082 mp1_decoder_select="mpegaudio"
2083 mp1float_decoder_select="mpegaudio"
2084 mp2_decoder_select="mpegaudio"
2085 mp2float_decoder_select="mpegaudio"
2086 mp3_decoder_select="mpegaudio"
2087 mp3adu_decoder_select="mpegaudio"
2088 mp3adufloat_decoder_select="mpegaudio"
2089 mp3float_decoder_select="mpegaudio"
2090 mp3on4_decoder_select="mpegaudio"
2091 mp3on4float_decoder_select="mpegaudio"
2092 mpc7_decoder_select="dsputil mpegaudiodsp"
2093 mpc8_decoder_select="mpegaudiodsp"
2094 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2095 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2096 mpeg1video_decoder_select="error_resilience mpegvideo"
2097 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2098 mpeg2video_decoder_select="error_resilience mpegvideo"
2099 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2100 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2101 mpeg4_encoder_select="h263_encoder"
2102 msmpeg4v1_decoder_select="h263_decoder"
2103 msmpeg4v2_decoder_select="h263_decoder"
2104 msmpeg4v2_encoder_select="h263_encoder"
2105 msmpeg4v3_decoder_select="h263_decoder"
2106 msmpeg4v3_encoder_select="h263_encoder"
2107 mss2_decoder_select="error_resilience vc1_decoder"
2108 mxpeg_decoder_select="mjpeg_decoder"
2109 nellymoser_decoder_select="mdct sinewin"
2110 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2111 nuv_decoder_select="dsputil lzo"
2112 on2avc_decoder_select="mdct"
2113 opus_decoder_deps="swresample"
2114 png_decoder_select="zlib"
2115 png_encoder_select="dsputil zlib"
2116 prores_decoder_select="dsputil"
2117 prores_encoder_select="dsputil"
2118 qcelp_decoder_select="lsp"
2119 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2120 ra_144_encoder_select="audio_frame_queue lpc"
2121 ralf_decoder_select="golomb"
2122 rawvideo_decoder_select="dsputil"
2123 rtjpeg_decoder_select="dsputil"
2124 rv10_decoder_select="error_resilience h263_decoder h263dsp"
2125 rv10_encoder_select="h263_encoder"
2126 rv20_decoder_select="error_resilience h263_decoder h263dsp"
2127 rv20_encoder_select="h263_encoder"
2128 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2129 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2130 shorten_decoder_select="golomb"
2131 sipr_decoder_select="lsp"
2132 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
2133 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
2134 sonic_decoder_select="golomb rangecoder"
2135 sonic_encoder_select="golomb rangecoder"
2136 sonic_ls_encoder_select="golomb rangecoder"
2137 sp5x_decoder_select="mjpeg_decoder"
2138 svq1_decoder_select="hpeldsp"
2139 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
2140 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2141 svq3_decoder_suggest="zlib"
2142 tak_decoder_select="dsputil"
2143 theora_decoder_select="vp3_decoder"
2144 thp_decoder_select="mjpeg_decoder"
2145 tiff_decoder_suggest="zlib"
2146 tiff_encoder_suggest="zlib"
2147 truehd_decoder_select="mlp_parser"
2148 truemotion2_decoder_select="dsputil"
2149 truespeech_decoder_select="dsputil"
2150 tscc_decoder_select="zlib"
2151 twinvq_decoder_select="mdct lsp sinewin"
2152 utvideo_decoder_select="dsputil"
2153 utvideo_encoder_select="dsputil huffman"
2154 vble_decoder_select="dsputil"
2155 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
2156 vc1image_decoder_select="vc1_decoder"
2157 vorbis_decoder_select="mdct"
2158 vorbis_encoder_select="mdct"
2159 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2160 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2161 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2162 vp6a_decoder_select="vp6_decoder"
2163 vp6f_decoder_select="vp6_decoder"
2164 vp7_decoder_select="h264pred videodsp"
2165 vp8_decoder_select="h264pred videodsp"
2166 vp9_decoder_select="videodsp vp9_parser"
2167 webp_decoder_select="vp8_decoder"
2168 wmapro_decoder_select="mdct sinewin"
2169 wmav1_decoder_select="mdct sinewin"
2170 wmav1_encoder_select="mdct sinewin"
2171 wmav2_decoder_select="mdct sinewin"
2172 wmav2_encoder_select="mdct sinewin"
2173 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2174 wmv1_decoder_select="h263_decoder"
2175 wmv1_encoder_select="h263_encoder"
2176 wmv2_decoder_select="h263_decoder intrax8 videodsp"
2177 wmv2_encoder_select="h263_encoder"
2178 wmv3_decoder_select="vc1_decoder"
2179 wmv3image_decoder_select="wmv3_decoder"
2180 zerocodec_decoder_select="zlib"
2181 zlib_decoder_select="zlib"
2182 zlib_encoder_select="zlib"
2183 zmbv_decoder_select="zlib"
2184 zmbv_encoder_select="zlib"
2185
2186 # hardware accelerators
2187 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2188 dxva2_deps="dxva2api_h"
2189 vaapi_deps="va_va_h"
2190 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2191 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2192 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2193 xvmc_deps="X11_extensions_XvMClib_h"
2194
2195 h263_vaapi_hwaccel_deps="vaapi"
2196 h263_vaapi_hwaccel_select="h263_decoder"
2197 h263_vdpau_hwaccel_deps="vdpau"
2198 h263_vdpau_hwaccel_select="h263_decoder"
2199 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2200 h264_dxva2_hwaccel_deps="dxva2"
2201 h264_dxva2_hwaccel_select="h264_decoder"
2202 h264_vaapi_hwaccel_deps="vaapi"
2203 h264_vaapi_hwaccel_select="h264_decoder"
2204 h264_vda_decoder_deps="vda"
2205 h264_vda_decoder_select="h264_decoder"
2206 h264_vda_hwaccel_deps="vda"
2207 h264_vda_hwaccel_select="h264_decoder"
2208 h264_vda_old_hwaccel_deps="vda"
2209 h264_vda_old_hwaccel_select="h264_decoder"
2210 h264_vdpau_decoder_deps="vdpau"
2211 h264_vdpau_decoder_select="h264_decoder"
2212 h264_vdpau_hwaccel_deps="vdpau"
2213 h264_vdpau_hwaccel_select="h264_decoder"
2214 mpeg_vdpau_decoder_deps="vdpau"
2215 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2216 mpeg_xvmc_hwaccel_deps="xvmc"
2217 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2218 mpeg1_vdpau_decoder_deps="vdpau"
2219 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2220 mpeg1_vdpau_hwaccel_deps="vdpau"
2221 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2222 mpeg1_xvmc_hwaccel_deps="xvmc"
2223 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2224 mpeg2_crystalhd_decoder_select="crystalhd"
2225 mpeg2_dxva2_hwaccel_deps="dxva2"
2226 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2227 mpeg2_vaapi_hwaccel_deps="vaapi"
2228 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2229 mpeg2_vdpau_hwaccel_deps="vdpau"
2230 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2231 mpeg2_xvmc_hwaccel_deps="xvmc"
2232 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2233 mpeg4_crystalhd_decoder_select="crystalhd"
2234 mpeg4_vaapi_hwaccel_deps="vaapi"
2235 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2236 mpeg4_vdpau_decoder_deps="vdpau"
2237 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2238 mpeg4_vdpau_hwaccel_deps="vdpau"
2239 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2240 msmpeg4_crystalhd_decoder_select="crystalhd"
2241 vc1_crystalhd_decoder_select="crystalhd"
2242 vc1_dxva2_hwaccel_deps="dxva2"
2243 vc1_dxva2_hwaccel_select="vc1_decoder"
2244 vc1_vaapi_hwaccel_deps="vaapi"
2245 vc1_vaapi_hwaccel_select="vc1_decoder"
2246 vc1_vdpau_decoder_deps="vdpau"
2247 vc1_vdpau_decoder_select="vc1_decoder"
2248 vc1_vdpau_hwaccel_deps="vdpau"
2249 vc1_vdpau_hwaccel_select="vc1_decoder"
2250 wmv3_crystalhd_decoder_select="crystalhd"
2251 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2252 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2253 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2254 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2255
2256 # parsers
2257 h264_parser_select="h264_decoder"
2258 hevc_parser_select="hevc_decoder"
2259 mpeg4video_parser_select="error_resilience h263dsp mpegvideo"
2260 mpegvideo_parser_select="error_resilience mpegvideo"
2261 vc1_parser_select="mpegvideo"
2262
2263 # external libraries
2264 libaacplus_encoder_deps="libaacplus"
2265 libcelt_decoder_deps="libcelt"
2266 libfaac_encoder_deps="libfaac"
2267 libfaac_encoder_select="audio_frame_queue"
2268 libfdk_aac_decoder_deps="libfdk_aac"
2269 libfdk_aac_encoder_deps="libfdk_aac"
2270 libfdk_aac_encoder_select="audio_frame_queue"
2271 libgme_demuxer_deps="libgme"
2272 libgsm_decoder_deps="libgsm"
2273 libgsm_encoder_deps="libgsm"
2274 libgsm_ms_decoder_deps="libgsm"
2275 libgsm_ms_encoder_deps="libgsm"
2276 libilbc_decoder_deps="libilbc"
2277 libilbc_encoder_deps="libilbc"
2278 libmodplug_demuxer_deps="libmodplug"
2279 libmp3lame_encoder_deps="libmp3lame"
2280 libmp3lame_encoder_select="audio_frame_queue"
2281 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2282 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2283 libopencore_amrnb_encoder_select="audio_frame_queue"
2284 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2285 libopenjpeg_decoder_deps="libopenjpeg"
2286 libopenjpeg_encoder_deps="libopenjpeg"
2287 libopus_decoder_deps="libopus"
2288 libopus_encoder_deps="libopus"
2289 libopus_encoder_select="audio_frame_queue"
2290 libquvi_demuxer_deps="libquvi"
2291 libschroedinger_decoder_deps="libschroedinger"
2292 libschroedinger_encoder_deps="libschroedinger"
2293 libshine_encoder_deps="libshine"
2294 libshine_encoder_select="audio_frame_queue"
2295 libspeex_decoder_deps="libspeex"
2296 libspeex_encoder_deps="libspeex"
2297 libspeex_encoder_select="audio_frame_queue"
2298 libstagefright_h264_decoder_deps="libstagefright_h264"
2299 libtheora_encoder_deps="libtheora"
2300 libtwolame_encoder_deps="libtwolame"
2301 libvo_aacenc_encoder_deps="libvo_aacenc"
2302 libvo_aacenc_encoder_select="audio_frame_queue"
2303 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2304 libvorbis_decoder_deps="libvorbis"
2305 libvorbis_encoder_deps="libvorbis"
2306 libvorbis_encoder_select="audio_frame_queue"
2307 libvpx_vp8_decoder_deps="libvpx"
2308 libvpx_vp8_encoder_deps="libvpx"
2309 libvpx_vp9_decoder_deps="libvpx"
2310 libvpx_vp9_encoder_deps="libvpx"
2311 libwavpack_encoder_deps="libwavpack"
2312 libwebp_encoder_deps="libwebp"
2313 libx264_encoder_deps="libx264"
2314 libx264rgb_encoder_deps="libx264"
2315 libx265_encoder_deps="libx265"
2316 libxavs_encoder_deps="libxavs"
2317 libxvid_encoder_deps="libxvid"
2318 libutvideo_decoder_deps="libutvideo"
2319 libutvideo_encoder_deps="libutvideo"
2320 libzvbi_teletext_decoder_deps="libzvbi"
2321
2322 # demuxers / muxers
2323 ac3_demuxer_select="ac3_parser"
2324 asf_demuxer_select="riffdec"
2325 asf_muxer_select="riffenc"
2326 asf_stream_muxer_select="asf_muxer"
2327 avi_demuxer_select="riffdec exif"
2328 avi_muxer_select="riffenc"
2329 avisynth_demuxer_deps="avisynth"
2330 avisynth_demuxer_select="riffdec"
2331 caf_demuxer_select="riffdec"
2332 dirac_demuxer_select="dirac_parser"
2333 dts_demuxer_select="dca_parser"
2334 dtshd_demuxer_select="dca_parser"
2335 dxa_demuxer_select="riffdec"
2336 eac3_demuxer_select="ac3_parser"
2337 f4v_muxer_select="mov_muxer"
2338 flac_demuxer_select="flac_parser"
2339 hds_muxer_select="flv_muxer"
2340 hls_muxer_select="mpegts_muxer"
2341 image2_alias_pix_demuxer_select="image2_demuxer"
2342 image2_brender_pix_demuxer_select="image2_demuxer"
2343 ipod_muxer_select="mov_muxer"
2344 ismv_muxer_select="mov_muxer"
2345 libnut_demuxer_deps="libnut"
2346 libnut_muxer_deps="libnut"
2347 matroska_audio_muxer_select="matroska_muxer"
2348 matroska_demuxer_select="riffdec"
2349 matroska_demuxer_suggest="bzlib lzo zlib"
2350 matroska_muxer_select="riffenc"
2351 mmf_muxer_select="riffenc"
2352 mov_demuxer_select="riffdec"
2353 mov_demuxer_suggest="zlib"
2354 mov_muxer_select="riffenc rtpenc_chain"
2355 mp3_demuxer_select="mpegaudio_parser"
2356 mp4_muxer_select="mov_muxer"
2357 mpegts_muxer_select="adts_muxer latm_muxer"
2358 mpegtsraw_demuxer_select="mpegts_demuxer"
2359 mxf_d10_muxer_select="mxf_muxer"
2360 nut_muxer_select="riffenc"
2361 nuv_demuxer_select="riffdec"
2362 ogg_demuxer_select="golomb"
2363 psp_muxer_select="mov_muxer"
2364 rtp_demuxer_select="sdp_demuxer"
2365 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2366 rtsp_demuxer_select="http_protocol rtpdec"
2367 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2368 sap_demuxer_select="sdp_demuxer"
2369 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2370 sdp_demuxer_select="rtpdec"
2371 smoothstreaming_muxer_select="ismv_muxer"
2372 spdif_muxer_select="aac_parser"
2373 tak_demuxer_select="tak_parser"
2374 tg2_muxer_select="mov_muxer"
2375 tgp_muxer_select="mov_muxer"
2376 vobsub_demuxer_select="mpegps_demuxer"
2377 w64_demuxer_select="wav_demuxer"
2378 w64_muxer_select="wav_muxer"
2379 wav_demuxer_select="riffdec"
2380 wav_muxer_select="riffenc"
2381 webm_muxer_select="riffenc"
2382 wtv_demuxer_select="riffdec"
2383 wtv_muxer_select="riffenc"
2384 xmv_demuxer_select="riffdec"
2385 xwma_demuxer_select="riffdec"
2386
2387 # indevs / outdevs
2388 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2389 alsa_outdev_deps="alsa_asoundlib_h"
2390 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2391 avfoundation_indev_select="avfoundation"
2392 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2393 caca_outdev_deps="libcaca"
2394 decklink_outdev_deps="decklink pthreads"
2395 decklink_outdev_extralibs="-lstdc++"
2396 dshow_indev_deps="IBaseFilter"
2397 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2398 dv1394_indev_deps="dv1394"
2399 dv1394_indev_select="dv_demuxer"
2400 fbdev_indev_deps="linux_fb_h"
2401 fbdev_outdev_deps="linux_fb_h"
2402 gdigrab_indev_deps="CreateDIBSection"
2403 gdigrab_indev_extralibs="-lgdi32"
2404 gdigrab_indev_select="bmp_decoder"
2405 iec61883_indev_deps="libiec61883"
2406 jack_indev_deps="jack_jack_h sem_timedwait"
2407 lavfi_indev_deps="avfilter"
2408 libcdio_indev_deps="libcdio"
2409 libdc1394_indev_deps="libdc1394"
2410 libv4l2_indev_deps="libv4l2"
2411 openal_indev_deps="openal"
2412 opengl_outdev_deps="opengl"
2413 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2414 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2415 pulse_indev_deps="libpulse"
2416 pulse_outdev_deps="libpulse"
2417 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2418 qtkit_indev_select="qtkit"
2419 sdl_outdev_deps="sdl"
2420 sndio_indev_deps="sndio_h"
2421 sndio_outdev_deps="sndio_h"
2422 v4l_indev_deps="linux_videodev_h"
2423 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2424 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2425 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2426 vfwcap_indev_extralibs="-lavicap32"
2427 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2428 xv_outdev_extralibs="-lXv -lX11 -lXext"
2429 x11grab_indev_deps="x11grab"
2430
2431 # protocols
2432 bluray_protocol_deps="libbluray"
2433 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2434 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2435 ffrtmpcrypt_protocol_select="tcp_protocol"
2436 ffrtmphttp_protocol_deps="!librtmp_protocol"
2437 ffrtmphttp_protocol_select="http_protocol"
2438 ftp_protocol_select="tcp_protocol"
2439 gopher_protocol_select="network"
2440 http_protocol_select="tcp_protocol"
2441 httpproxy_protocol_select="tcp_protocol"
2442 https_protocol_select="tls_protocol"
2443 librtmp_protocol_deps="librtmp"
2444 librtmpe_protocol_deps="librtmp"
2445 librtmps_protocol_deps="librtmp"
2446 librtmpt_protocol_deps="librtmp"
2447 librtmpte_protocol_deps="librtmp"
2448 libssh_protocol_deps="libssh"
2449 mmsh_protocol_select="http_protocol"
2450 mmst_protocol_select="network"
2451 rtmp_protocol_deps="!librtmp_protocol"
2452 rtmp_protocol_select="tcp_protocol"
2453 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2454 rtmps_protocol_deps="!librtmp_protocol"
2455 rtmps_protocol_select="tls_protocol"
2456 rtmpt_protocol_select="ffrtmphttp_protocol"
2457 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2458 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2459 rtp_protocol_select="udp_protocol"
2460 sctp_protocol_deps="struct_sctp_event_subscribe"
2461 sctp_protocol_select="network"
2462 srtp_protocol_select="rtp_protocol"
2463 tcp_protocol_select="network"
2464 tls_protocol_deps_any="openssl gnutls"
2465 tls_protocol_select="tcp_protocol"
2466 udp_protocol_select="network"
2467 unix_protocol_deps="sys_un_h"
2468 unix_protocol_select="network"
2469
2470 # filters
2471 aconvert_filter_deps="swresample"
2472 amovie_filter_deps="avcodec avformat"
2473 aresample_filter_deps="swresample"
2474 ass_filter_deps="libass"
2475 asyncts_filter_deps="avresample"
2476 atempo_filter_deps="avcodec"
2477 atempo_filter_select="rdft"
2478 azmq_filter_deps="libzmq"
2479 blackframe_filter_deps="gpl"
2480 boxblur_filter_deps="gpl"
2481 bs2b_filter_deps="libbs2b"
2482 colormatrix_filter_deps="gpl"
2483 cropdetect_filter_deps="gpl"
2484 dctdnoiz_filter_deps="avcodec"
2485 dctdnoiz_filter_select="dct"
2486 delogo_filter_deps="gpl"
2487 deshake_filter_deps="avcodec"
2488 deshake_filter_select="dsputil"
2489 drawtext_filter_deps="libfreetype"
2490 ebur128_filter_deps="gpl"
2491 flite_filter_deps="libflite"
2492 frei0r_filter_deps="frei0r dlopen"
2493 frei0r_filter_extralibs='$ldl'
2494 frei0r_src_filter_deps="frei0r dlopen"
2495 frei0r_src_filter_extralibs='$ldl'
2496 geq_filter_deps="gpl"
2497 histeq_filter_deps="gpl"
2498 hqdn3d_filter_deps="gpl"
2499 interlace_filter_deps="gpl"
2500 kerndeint_filter_deps="gpl"
2501 ladspa_filter_deps="ladspa dlopen"
2502 mcdeint_filter_deps="avcodec gpl"
2503 movie_filter_deps="avcodec avformat"
2504 mp_filter_deps="gpl avcodec swscale inline_asm"
2505 mpdecimate_filter_deps="gpl avcodec"
2506 mptestsrc_filter_deps="gpl"
2507 negate_filter_deps="lut_filter"
2508 perspective_filter_deps="gpl"
2509 ocv_filter_deps="libopencv"
2510 owdenoise_filter_deps="gpl"
2511 pan_filter_deps="swresample"
2512 phase_filter_deps="gpl"
2513 pp_filter_deps="gpl postproc"
2514 pullup_filter_deps="gpl"
2515 removelogo_filter_deps="avcodec avformat swscale"
2516 resample_filter_deps="avresample"
2517 sab_filter_deps="gpl swscale"
2518 scale_filter_deps="swscale"
2519 smartblur_filter_deps="gpl swscale"
2520 showspectrum_filter_deps="avcodec"
2521 showspectrum_filter_select="rdft"
2522 spp_filter_deps="gpl avcodec"
2523 spp_filter_select="fft"
2524 stereo3d_filter_deps="gpl"
2525 subtitles_filter_deps="avformat avcodec libass"
2526 super2xsai_filter_deps="gpl"
2527 tinterlace_filter_deps="gpl"
2528 vidstabdetect_filter_deps="libvidstab"
2529 vidstabtransform_filter_deps="libvidstab"
2530 pixfmts_super2xsai_test_deps="super2xsai_filter"
2531 tinterlace_merge_test_deps="tinterlace_filter"
2532 tinterlace_pad_test_deps="tinterlace_filter"
2533 zmq_filter_deps="libzmq"
2534
2535 # examples
2536 avio_reading="avformat avcodec avutil"
2537 avcodec_example_deps="avcodec avutil"
2538 demuxing_decoding_example_deps="avcodec avformat avutil"
2539 filter_audio_example_deps="avfilter avutil"
2540 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2541 filtering_video_example_deps="avfilter avcodec avformat avutil"
2542 metadata_example_deps="avformat avutil"
2543 muxing_example_deps="avcodec avformat avutil swscale"
2544 remuxing_example_deps="avcodec avformat avutil"
2545 resampling_audio_example_deps="avutil swresample"
2546 scaling_video_example_deps="avutil swscale"
2547 transcode_aac_example_deps="avcodec avformat swresample"
2548 transcoding_example_deps="avfilter avcodec avformat avutil"
2549
2550 # libraries, in linking order
2551 avcodec_deps="avutil"
2552 avdevice_deps="avformat avcodec avutil"
2553 avfilter_deps="avutil"
2554 avformat_deps="avcodec avutil"
2555 avresample_deps="avutil"
2556 postproc_deps="avutil gpl"
2557 swresample_deps="avutil"
2558 swscale_deps="avutil"
2559
2560 # programs
2561 ffmpeg_deps="avcodec avfilter avformat swresample"
2562 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2563                null_filter
2564                setpts_filter trim_filter"
2565 ffplay_deps="avcodec avformat swscale swresample sdl"
2566 ffplay_libs='$sdl_libs'
2567 ffplay_select="rdft crop_filter"
2568 ffprobe_deps="avcodec avformat"
2569 ffserver_deps="avformat fork sarestart"
2570 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2571
2572 # documentation
2573 podpages_deps="perl"
2574 manpages_deps="perl pod2man"
2575 htmlpages_deps="perl texi2html"
2576 txtpages_deps="perl makeinfo"
2577 doc_deps_any="manpages htmlpages podpages txtpages"
2578
2579 # default parameters
2580
2581 logfile="config.log"
2582
2583 # installation paths
2584 prefix_default="/usr/local"
2585 bindir_default='${prefix}/bin'
2586 datadir_default='${prefix}/share/ffmpeg'
2587 docdir_default='${prefix}/share/doc/ffmpeg'
2588 incdir_default='${prefix}/include'
2589 libdir_default='${prefix}/lib'
2590 mandir_default='${prefix}/share/man'
2591 shlibdir_default="$libdir_default"
2592
2593 # toolchain
2594 ar_default="ar"
2595 cc_default="gcc"
2596 cxx_default="g++"
2597 host_cc_default="gcc"
2598 cp_f="cp -f"
2599 install="install"
2600 ln_s="ln -s -f"
2601 nm_default="nm -g"
2602 objformat="elf"
2603 pkg_config_default=pkg-config
2604 ranlib_default="ranlib"
2605 strip_default="strip"
2606 yasmexe_default="yasm"
2607 windres_default="windres"
2608
2609 nogas=":"
2610
2611 # OS
2612 target_os_default=$(tolower $(uname -s))
2613 host_os=$target_os_default
2614
2615 # machine
2616 if test "$target_os_default" = aix; then
2617     arch_default=$(uname -p)
2618 else
2619     arch_default=$(uname -m)
2620 fi
2621 cpu="generic"
2622
2623 # configurable options
2624 enable $PROGRAM_LIST
2625 enable $DOCUMENT_LIST
2626 enable $EXAMPLE_LIST
2627 enable $(filter_out avresample $LIBRARY_LIST)
2628 enable stripping
2629
2630 enable asm
2631 enable debug
2632 enable doc
2633 enable optimizations
2634 enable runtime_cpudetect
2635 enable safe_bitstream_reader
2636 enable static
2637 enable swscale_alpha
2638
2639 # Enable hwaccels by default.
2640 enable dxva2 vaapi vda vdpau xvmc
2641 enable xlib
2642
2643 # build settings
2644 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2645 LIBPREF="lib"
2646 LIBSUF=".a"
2647 FULLNAME='$(NAME)$(BUILDSUF)'
2648 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2649 SLIBPREF="lib"
2650 SLIBSUF=".so"
2651 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2652 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2653 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2654 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2655 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2656 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2657
2658 asflags_filter=echo
2659 cflags_filter=echo
2660 ldflags_filter=echo
2661
2662 AS_C='-c'
2663 AS_O='-o $@'
2664 CC_C='-c'
2665 CC_E='-E -o $@'
2666 CC_O='-o $@'
2667 CXX_C='-c'
2668 CXX_O='-o $@'
2669 LD_O='-o $@'
2670 LD_LIB='-l%'
2671 LD_PATH='-L'
2672 HOSTCC_C='-c'
2673 HOSTCC_E='-E -o $@'
2674 HOSTCC_O='-o $@'
2675 HOSTLD_O='-o $@'
2676
2677 host_libs='-lm'
2678 host_cflags_filter=echo
2679 host_ldflags_filter=echo
2680
2681 target_path='$(CURDIR)'
2682
2683 # since the object filename is not given with the -MM flag, the compiler
2684 # is only able to print the basename, and we must add the path ourselves
2685 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2686 DEPFLAGS='-MM'
2687
2688 # find source path
2689 if test -f configure; then
2690     source_path=.
2691 else
2692     source_path=$(cd $(dirname "$0"); pwd)
2693     echo "$source_path" | grep -q '[[:blank:]]' &&
2694         die "Out of tree builds are impossible with whitespace in source path."
2695     test -e "$source_path/config.h" &&
2696         die "Out of tree builds are impossible with config.h in source dir."
2697 fi
2698
2699 for v in "$@"; do
2700     r=${v#*=}
2701     l=${v%"$r"}
2702     r=$(sh_quote "$r")
2703     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2704 done
2705
2706 find_things(){
2707     thing=$1
2708     pattern=$2
2709     file=$source_path/$3
2710     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2711 }
2712
2713 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2714 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2715 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2716 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2717 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2718 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2719 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2720 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2721 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2722 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2723 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2724
2725 ALL_COMPONENTS="
2726     $BSF_LIST
2727     $DECODER_LIST
2728     $DEMUXER_LIST
2729     $ENCODER_LIST
2730     $FILTER_LIST
2731     $HWACCEL_LIST
2732     $INDEV_LIST
2733     $MUXER_LIST
2734     $OUTDEV_LIST
2735     $PARSER_LIST
2736     $PROTOCOL_LIST
2737 "
2738
2739 for n in $COMPONENT_LIST; do
2740     v=$(toupper ${n%s})_LIST
2741     eval enable \$$v
2742     eval ${n}_if_any="\$$v"
2743 done
2744
2745 enable $ARCH_EXT_LIST
2746
2747 die_unknown(){
2748     echo "Unknown option \"$1\"."
2749     echo "See $0 --help for available options."
2750     exit 1
2751 }
2752
2753 print_3_columns() {
2754     cat | tr ' ' '\n' | sort | pr -r -3 -t
2755 }
2756
2757 show_list() {
2758     suffix=_$1
2759     shift
2760     echo $* | sed s/$suffix//g | print_3_columns
2761     exit 0
2762 }
2763
2764 rand_list(){
2765     IFS=', '
2766     set -- $*
2767     unset IFS
2768     for thing; do
2769         comp=${thing%:*}
2770         prob=${thing#$comp}
2771         prob=${prob#:}
2772         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2773         echo "prob ${prob:-0.5}"
2774         printf '%s\n' $comp
2775     done
2776 }
2777
2778 do_random(){
2779     action=$1
2780     shift
2781     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2782     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2783 }
2784
2785 for opt do
2786     optval="${opt#*=}"
2787     case "$opt" in
2788         --extra-ldflags=*)
2789             add_ldflags $optval
2790         ;;
2791         --extra-libs=*)
2792             add_extralibs $optval
2793         ;;
2794         --disable-devices)
2795             disable $INDEV_LIST $OUTDEV_LIST
2796         ;;
2797         --enable-debug=*)
2798             debuglevel="$optval"
2799         ;;
2800         --disable-programs)
2801             disable $PROGRAM_LIST
2802         ;;
2803         --disable-everything)
2804             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2805         ;;
2806         --disable-all)
2807             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2808             disable $LIBRARY_LIST $PROGRAM_LIST doc
2809         ;;
2810         --enable-random|--disable-random)
2811             action=${opt%%-random}
2812             do_random ${action#--} $COMPONENT_LIST
2813         ;;
2814         --enable-random=*|--disable-random=*)
2815             action=${opt%%-random=*}
2816             do_random ${action#--} $optval
2817         ;;
2818         --enable-*=*|--disable-*=*)
2819             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2820             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2821             eval list=\$$(toupper $thing)_LIST
2822             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2823             list=$(filter "$name" $list)
2824             [ "$list" = "" ] && warn "Option $opt did not match anything"
2825             $action $list
2826         ;;
2827         --enable-?*|--disable-?*)
2828             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2829             if is_in $option $COMPONENT_LIST; then
2830                 test $action = disable && action=unset
2831                 eval $action \$$(toupper ${option%s})_LIST
2832             elif is_in $option $CMDLINE_SELECT; then
2833                 $action $option
2834             else
2835                 die_unknown $opt
2836             fi
2837         ;;
2838         --list-*)
2839             NAME="${opt#--list-}"
2840             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2841             NAME=${NAME%s}
2842             eval show_list $NAME \$$(toupper $NAME)_LIST
2843         ;;
2844         --help|-h) show_help
2845         ;;
2846         --fatal-warnings) enable fatal_warnings
2847         ;;
2848         *)
2849             optname="${opt%%=*}"
2850             optname="${optname#--}"
2851             optname=$(echo "$optname" | sed 's/-/_/g')
2852             if is_in $optname $CMDLINE_SET; then
2853                 eval $optname='$optval'
2854             elif is_in $optname $CMDLINE_APPEND; then
2855                 append $optname "$optval"
2856             else
2857                 die_unknown $opt
2858             fi
2859         ;;
2860     esac
2861 done
2862
2863 disabled logging && logfile=/dev/null
2864
2865 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2866 set >> $logfile
2867
2868 test -n "$cross_prefix" && enable cross_compile
2869
2870 if enabled cross_compile; then
2871     test -n "$arch" && test -n "$target_os" ||
2872         die "Must specify target arch and OS when cross-compiling"
2873 fi
2874
2875 ar_default="${cross_prefix}${ar_default}"
2876 cc_default="${cross_prefix}${cc_default}"
2877 cxx_default="${cross_prefix}${cxx_default}"
2878 nm_default="${cross_prefix}${nm_default}"
2879 pkg_config_default="${cross_prefix}${pkg_config_default}"
2880 ranlib_default="${cross_prefix}${ranlib_default}"
2881 strip_default="${cross_prefix}${strip_default}"
2882 windres_default="${cross_prefix}${windres_default}"
2883
2884 sysinclude_default="${sysroot}/usr/include"
2885
2886 test -n "$valgrind" && toolchain="valgrind-memcheck"
2887
2888 case "$toolchain" in
2889     clang-asan)
2890         cc_default="clang"
2891         add_cflags  -fsanitize=address
2892         add_ldflags -fsanitize=address
2893     ;;
2894     clang-tsan)
2895         cc_default="clang"
2896         add_cflags  -fsanitize=thread -pie
2897         add_ldflags -fsanitize=thread -pie
2898     ;;
2899     clang-usan)
2900         cc_default="clang"
2901         add_cflags  -fsanitize=undefined
2902         add_ldflags -fsanitize=undefined
2903     ;;
2904     gcc-asan)
2905         cc_default="gcc"
2906         add_cflags  -fsanitize=address
2907         add_ldflags -fsanitize=address
2908     ;;
2909     gcc-tsan)
2910         cc_default="gcc"
2911         add_cflags  -fsanitize=thread -pie -fPIC
2912         add_ldflags -fsanitize=thread -pie -fPIC
2913     ;;
2914     gcc-usan)
2915         cc_default="gcc"
2916         add_cflags  -fsanitize=undefined
2917         add_ldflags -fsanitize=undefined
2918     ;;
2919     valgrind-massif)
2920         target_exec_default=${valgrind:-"valgrind"}
2921         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"
2922     ;;
2923     valgrind-memcheck)
2924         target_exec_default=${valgrind:-"valgrind"}
2925         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2926     ;;
2927     msvc)
2928         # Check whether the current MSVC version needs the C99 converter.
2929         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2930         # support enough of C99 to build ffmpeg. Default to the new
2931         # behaviour if the regexp was unable to match anything, since this
2932         # successfully parses the version number of existing supported
2933         # versions that require the converter (MSVC 2010 and 2012).
2934         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2935         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2936             cc_default="cl"
2937         else
2938             cc_default="c99wrap cl"
2939         fi
2940         ld_default="link"
2941         nm_default="dumpbin -symbols"
2942         ar_default="lib"
2943         target_os_default="win32"
2944         # Use a relative path for TMPDIR. This makes sure all the
2945         # ffconf temp files are written with a relative path, avoiding
2946         # issues with msys/win32 path conversion for MSVC parameters
2947         # such as -Fo<file> or -out:<file>.
2948         TMPDIR=.
2949     ;;
2950     icl)
2951         cc_default="icl"
2952         ld_default="xilink"
2953         nm_default="dumpbin -symbols"
2954         ar_default="xilib"
2955         target_os_default="win32"
2956         TMPDIR=.
2957     ;;
2958     gcov)
2959         add_cflags  -fprofile-arcs -ftest-coverage
2960         add_ldflags -fprofile-arcs -ftest-coverage
2961     ;;
2962     hardened)
2963         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2964         add_ldflags -Wl,-z,relro -Wl,-z,now
2965     ;;
2966     ?*)
2967         die "Unknown toolchain $toolchain"
2968     ;;
2969 esac
2970
2971 set_default arch cc cxx pkg_config ranlib strip sysinclude target_exec target_os yasmexe
2972 enabled cross_compile || host_cc_default=$cc
2973 set_default host_cc
2974
2975 if ! $pkg_config --version >/dev/null 2>&1; then
2976     warn "$pkg_config not found, library detection may fail."
2977     pkg_config=false
2978 fi
2979
2980 exesuf() {
2981     case $1 in
2982         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2983     esac
2984 }
2985
2986 EXESUF=$(exesuf $target_os)
2987 HOSTEXESUF=$(exesuf $host_os)
2988
2989 # set temporary file name
2990 : ${TMPDIR:=$TEMPDIR}
2991 : ${TMPDIR:=$TMP}
2992 : ${TMPDIR:=/tmp}
2993
2994 if [ -n "$tempprefix" ] ; then
2995     mktemp(){
2996         echo $tempprefix.${HOSTNAME}.${UID}
2997     }
2998 elif ! check_cmd mktemp -u XXXXXX; then
2999     # simple replacement for missing mktemp
3000     # NOT SAFE FOR GENERAL USE
3001     mktemp(){
3002         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3003     }
3004 fi
3005
3006 tmpfile(){
3007     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3008         (set -C; exec > $tmp) 2>/dev/null ||
3009         die "Unable to create temporary file in $TMPDIR."
3010     append TMPFILES $tmp
3011     eval $1=$tmp
3012 }
3013
3014 trap 'rm -f -- $TMPFILES' EXIT
3015
3016 tmpfile TMPASM .asm
3017 tmpfile TMPC   .c
3018 tmpfile TMPCPP .cpp
3019 tmpfile TMPE   $EXESUF
3020 tmpfile TMPH   .h
3021 tmpfile TMPM   .m
3022 tmpfile TMPO   .o
3023 tmpfile TMPS   .S
3024 tmpfile TMPSH  .sh
3025 tmpfile TMPV   .ver
3026
3027 unset -f mktemp
3028
3029 chmod +x $TMPE
3030
3031 # make sure we can execute files in $TMPDIR
3032 cat > $TMPSH 2>> $logfile <<EOF
3033 #! /bin/sh
3034 EOF
3035 chmod +x $TMPSH >> $logfile 2>&1
3036 if ! $TMPSH >> $logfile 2>&1; then
3037     cat <<EOF
3038 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3039 variable to another directory and make sure that it is not mounted noexec.
3040 EOF
3041     die "Sanity test failed."
3042 fi
3043
3044 ccc_flags(){
3045     for flag; do
3046         case $flag in
3047             -std=c99)           echo -c99                       ;;
3048             -mcpu=*)            echo -arch ${flag#*=}           ;;
3049             -mieee)             echo -ieee                      ;;
3050             -O*|-fast)          echo $flag                      ;;
3051             -fno-math-errno)    echo -assume nomath_errno       ;;
3052             -g)                 echo -g3                        ;;
3053             -Wall)              echo -msg_enable level2         ;;
3054             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3055             -Wl,*)              echo $flag                      ;;
3056             -f*|-W*)                                            ;;
3057             *)                  echo $flag                      ;;
3058         esac
3059    done
3060 }
3061
3062 cparser_flags(){
3063     for flag; do
3064         case $flag in
3065             -Wno-switch)             echo -Wno-switch-enum ;;
3066             -Wno-format-zero-length) ;;
3067             -Wdisabled-optimization) ;;
3068             -Wno-pointer-sign)       echo -Wno-other ;;
3069             *)                       echo $flag ;;
3070         esac
3071     done
3072 }
3073
3074 msvc_common_flags(){
3075     for flag; do
3076         case $flag in
3077             # In addition to specifying certain flags under the compiler
3078             # specific filters, they must be specified here as well or else the
3079             # generic catch all at the bottom will print the original flag.
3080             -Wall)                ;;
3081             -std=c99)             ;;
3082             # Common flags
3083             -fomit-frame-pointer) ;;
3084             -g)                   echo -Z7 ;;
3085             -fno-math-errno)      ;;
3086             -fno-common)          ;;
3087             -fno-signed-zeros)    ;;
3088             -fPIC)                ;;
3089             -mthumb)              ;;
3090             -march=*)             ;;
3091             -lz)                  echo zlib.lib ;;
3092             -lavifil32)           echo vfw32.lib ;;
3093             -lavicap32)           echo vfw32.lib user32.lib ;;
3094             -l*)                  echo ${flag#-l}.lib ;;
3095             *)                    echo $flag ;;
3096         esac
3097     done
3098 }
3099
3100 msvc_flags(){
3101     msvc_common_flags "$@"
3102     for flag; do
3103         case $flag in
3104             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3105                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3106                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3107                                        -wd4554 \
3108                                        -wd4273 ;;
3109         esac
3110     done
3111 }
3112
3113 icl_flags(){
3114     msvc_common_flags "$@"
3115     for flag; do
3116         case $flag in
3117             # Despite what Intel's documentation says -Wall, which is supported
3118             # on Windows, does enable remarks so disable them here.
3119             -Wall)                echo $flag -Qdiag-disable:remark ;;
3120             -std=c99)             echo -Qstd=c99 ;;
3121         esac
3122     done
3123 }
3124
3125 icc_flags(){
3126     for flag; do
3127         case $flag in
3128             -flto)                echo -ipo ;;
3129             *)                    echo $flag ;;
3130         esac
3131     done
3132 }
3133
3134 pgi_flags(){
3135     for flag; do
3136         case $flag in
3137             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3138             -fomit-frame-pointer) echo -Mnoframe ;;
3139             -g)                   echo -gopt ;;
3140             *)                    echo $flag ;;
3141         esac
3142     done
3143 }
3144
3145 suncc_flags(){
3146     for flag; do
3147         case $flag in
3148             -march=*|-mcpu=*)
3149                 case "${flag#*=}" in
3150                     native)                   echo -xtarget=native       ;;
3151                     v9|niagara)               echo -xarch=sparc          ;;
3152                     ultrasparc)               echo -xarch=sparcvis       ;;
3153                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3154                     i586|pentium)             echo -xchip=pentium        ;;
3155                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3156                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3157                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3158                     pentium4*)          echo -xtarget=pentium4           ;;
3159                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3160                     *-sse3)             echo -xarch=sse3                 ;;
3161                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3162                     bonnell)                   echo -xarch=ssse3         ;;
3163                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3164                     westmere)                  echo -xtarget=westmere    ;;
3165                     silvermont)                echo -xarch=sse4_2        ;;
3166                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3167                     core-avx*|ivybridge|haswell|broadwell)
3168                                                echo -xarch=avx           ;;
3169                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3170                     btver1)                    echo -xarch=amdsse4a      ;;
3171                     btver2|bdver*)             echo -xarch=avx           ;;
3172                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3173                     k8|opteron|athlon64|athlon-fx)
3174                                                echo -xarch=sse2a         ;;
3175                     athlon*)                   echo -xarch=pentium_proa  ;;
3176                 esac
3177                 ;;
3178             -std=c99)             echo -xc99              ;;
3179             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3180             -fPIC)                echo -KPIC -xcode=pic32 ;;
3181             -W*,*)                echo $flag              ;;
3182             -f*-*|-W*|-mimpure-text)                      ;;
3183             -shared)              echo -G                 ;;
3184             *)                    echo $flag              ;;
3185         esac
3186     done
3187 }
3188
3189 tms470_flags(){
3190     for flag; do
3191         case $flag in
3192             -march=*|-mcpu=*)
3193                 case "${flag#*=}" in
3194                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3195                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3196                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3197                     armv6*|arm11*)          echo -mv=6   ;;
3198                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3199                                             echo -mv=5e  ;;
3200                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3201                 esac
3202                 ;;
3203             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3204             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3205             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3206             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3207             -msoft-float)   echo --float_support=vfplib       ;;
3208             -O[0-3]|-mf=*)  echo $flag                        ;;
3209             -g)             echo -g -mn                       ;;
3210             -pds=*)         echo $flag                        ;;
3211             -D*|-I*)        echo $flag                        ;;
3212             --gcc|--abi=*)  echo $flag                        ;;
3213             -me)            echo $flag                        ;;
3214         esac
3215     done
3216 }
3217
3218 probe_cc(){
3219     pfx=$1
3220     _cc=$2
3221
3222     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3223     unset _ld_o _ldflags _ld_lib _ld_path
3224     unset _depflags _DEPCMD _DEPFLAGS
3225     _flags_filter=echo
3226
3227     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3228         true # no-op to avoid reading stdin in following checks
3229     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3230         _type=llvm_gcc
3231         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3232         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3233         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3234         _cflags_speed='-O3'
3235         _cflags_size='-Os'
3236     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3237         _type=gcc
3238         gcc_version=$($_cc --version | head -n1)
3239         gcc_basever=$($_cc -dumpversion)
3240         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3241         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3242         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3243         if ! $_cc -dumpversion | grep -q '^2\.'; then
3244             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3245         fi
3246         _cflags_speed='-O3'
3247         _cflags_size='-Os'
3248     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3249         _type=icc
3250         _ident=$($_cc --version | head -n1)
3251         _depflags='-MMD'
3252         _cflags_speed='-O3'
3253         _cflags_size='-Os'
3254         _cflags_noopt='-O1'
3255         _flags_filter=icc_flags
3256     elif $_cc -v 2>&1 | grep -q xlc; then
3257         _type=xlc
3258         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3259         _cflags_speed='-O5'
3260         _cflags_size='-O5 -qcompact'
3261     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3262         _type=ccc
3263         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3264         _DEPFLAGS='-M'
3265         _cflags_speed='-fast'
3266         _cflags_size='-O1'
3267         _flags_filter=ccc_flags
3268     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3269         test -d "$sysroot" || die "No valid sysroot specified."
3270         _type=armcc
3271         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
3272         armcc_conf="$PWD/armcc.conf"
3273         $_cc --arm_linux_configure                 \
3274              --arm_linux_config_file="$armcc_conf" \
3275              --configure_sysroot="$sysroot"        \
3276              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3277              die "Error creating armcc configuration file."
3278         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3279         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3280         as_default="${cross_prefix}gcc"
3281         _depflags='-MMD'
3282         _cflags_speed='-O3'
3283         _cflags_size='-Os'
3284     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3285         _type=tms470
3286         _ident=$($_cc -version | head -n1 | tr -s ' ')
3287         _flags='--gcc --abi=eabi -me'
3288         _cc_e='-ppl -fe=$@'
3289         _cc_o='-fe=$@'
3290         _depflags='-ppa -ppd=$(@:.o=.d)'
3291         _cflags_speed='-O3 -mf=5'
3292         _cflags_size='-O3 -mf=2'
3293         _flags_filter=tms470_flags
3294     elif $_cc -v 2>&1 | grep -q clang; then
3295         _type=clang
3296         _ident=$($_cc --version | head -n1)
3297         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3298         _cflags_speed='-O3'
3299         _cflags_size='-Os'
3300     elif $_cc -V 2>&1 | grep -q Sun; then
3301         _type=suncc
3302         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3303         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3304         _DEPFLAGS='-xM1 -xc99'
3305         _ldflags='-std=c99'
3306         _cflags_speed='-O5'
3307         _cflags_size='-O5 -xspace'
3308         _flags_filter=suncc_flags
3309     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3310         _type=pathscale
3311         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3312         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3313         _cflags_speed='-O2'
3314         _cflags_size='-Os'
3315         _flags_filter='filter_out -Wdisabled-optimization'
3316     elif $_cc -v 2>&1 | grep -q Open64; then
3317         _type=open64
3318         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3319         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3320         _cflags_speed='-O2'
3321         _cflags_size='-Os'
3322         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3323     elif $_cc -V 2>&1 | grep -q Portland; then
3324         _type=pgi
3325         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3326         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3327         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3328         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3329         _cflags_noopt="-O"
3330         _flags_filter=pgi_flags
3331     elif $_cc 2>&1 | grep -q Microsoft; then
3332         _type=msvc
3333         _ident=$($cc 2>&1 | head -n1)
3334         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3335         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3336         _cflags_speed="-O2"
3337         _cflags_size="-O1"
3338         if $_cc 2>&1 | grep -q Linker; then
3339             _ld_o='-out:$@'
3340         else
3341             _ld_o='-Fe$@'
3342         fi
3343         _cc_o='-Fo$@'
3344         _cc_e='-P -Fi$@'
3345         _flags_filter=msvc_flags
3346         _ld_lib='lib%.a'
3347         _ld_path='-libpath:'
3348         _flags='-nologo'
3349         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3350         if [ $pfx = hostcc ]; then
3351             append _cflags -Dsnprintf=_snprintf
3352         fi
3353         disable stripping
3354     elif $_cc 2>&1 | grep -q Intel; then
3355         _type=icl
3356         _ident=$($cc 2>&1 | head -n1)
3357         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3358         # Not only is O3 broken on 13.x+ but it is slower on all previous
3359         # versions (tested) as well.
3360         _cflags_speed="-O2"
3361         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3362         if $_cc 2>&1 | grep -q Linker; then
3363             _ld_o='-out:$@'
3364         else
3365             _ld_o='-Fe$@'
3366         fi
3367         _cc_o='-Fo$@'
3368         _cc_e='-P'
3369         _flags_filter=icl_flags
3370         _ld_lib='lib%.a'
3371         _ld_path='-libpath:'
3372         # -Qdiag-error to make icl error when seeing certain unknown arguments
3373         _flags='-nologo -Qdiag-error:4044,10157'
3374         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3375         # with MSVC which enables it by default.
3376         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3377         if [ $pfx = hostcc ]; then
3378             append _cflags -Dsnprintf=_snprintf
3379         fi
3380     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3381         _type=cparser
3382         _ident=$($_cc --version | head -n1)
3383         _depflags='-MMD'
3384         _cflags_speed='-O4'
3385         _cflags_size='-O2'
3386         _flags_filter=cparser_flags
3387     fi
3388
3389     eval ${pfx}_type=\$_type
3390     eval ${pfx}_ident=\$_ident
3391 }
3392
3393 set_ccvars(){
3394     eval ${1}_C=\${_cc_c-\${${1}_C}}
3395     eval ${1}_E=\${_cc_e-\${${1}_E}}
3396     eval ${1}_O=\${_cc_o-\${${1}_O}}
3397
3398     if [ -n "$_depflags" ]; then
3399         eval ${1}_DEPFLAGS=\$_depflags
3400     else
3401         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3402         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3403         eval DEP${1}FLAGS=\$_flags
3404     fi
3405 }
3406
3407 probe_cc cc "$cc"
3408 cflags_filter=$_flags_filter
3409 cflags_speed=$_cflags_speed
3410 cflags_size=$_cflags_size
3411 cflags_noopt=$_cflags_noopt
3412 add_cflags $_flags $_cflags
3413 cc_ldflags=$_ldflags
3414 set_ccvars CC
3415
3416 probe_cc hostcc "$host_cc"
3417 host_cflags_filter=$_flags_filter
3418 add_host_cflags  $_flags $_cflags
3419 set_ccvars HOSTCC
3420
3421 test -n "$cc_type" && enable $cc_type ||
3422     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3423
3424 : ${as_default:=$cc}
3425 : ${dep_cc_default:=$cc}
3426 : ${ld_default:=$cc}
3427 : ${host_ld_default:=$host_cc}
3428 set_default ar as dep_cc ld host_ld windres
3429
3430 probe_cc as "$as"
3431 asflags_filter=$_flags_filter
3432 add_asflags $_flags $_cflags
3433 set_ccvars AS
3434
3435 probe_cc ld "$ld"
3436 ldflags_filter=$_flags_filter
3437 add_ldflags $_flags $_ldflags
3438 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3439 LD_O=${_ld_o-$LD_O}
3440 LD_LIB=${_ld_lib-$LD_LIB}
3441 LD_PATH=${_ld_path-$LD_PATH}
3442
3443 probe_cc hostld "$host_ld"
3444 host_ldflags_filter=$_flags_filter
3445 add_host_ldflags $_flags $_ldflags
3446 HOSTLD_O=${_ld_o-$HOSTLD_O}
3447
3448 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3449     probe_cc depcc "$dep_cc"
3450     CCDEP=${_DEPCMD:-$DEPCMD}
3451     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3452     DEPCCFLAGS=$_flags
3453 fi
3454
3455 if $ar 2>&1 | grep -q Microsoft; then
3456     arflags="-nologo"
3457     ar_o='-out:$@'
3458 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3459     arflags="rq"
3460     ar_o='$@'
3461 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3462     arflags='-Xany -r -c'
3463     ar_o='$@'
3464 else
3465     arflags="rc"
3466     ar_o='$@'
3467 fi
3468
3469 add_cflags $extra_cflags
3470 add_cxxflags $extra_cxxflags
3471 add_asflags $extra_cflags
3472
3473 if test -n "$sysroot"; then
3474     case "$cc_type" in
3475         gcc|llvm_gcc|clang)
3476             add_cppflags --sysroot="$sysroot"
3477             add_ldflags --sysroot="$sysroot"
3478 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3479             add_cppflags -isysroot "$sysroot"
3480             add_ldflags -isysroot "$sysroot"
3481         ;;
3482         tms470)
3483             add_cppflags -I"$sysinclude"
3484             add_ldflags  --sysroot="$sysroot"
3485         ;;
3486     esac
3487 fi
3488
3489 if test "$cpu" = host; then
3490     enabled cross_compile &&
3491         die "--cpu=host makes no sense when cross-compiling."
3492
3493     case "$cc_type" in
3494         gcc|llvm_gcc)
3495             check_native(){
3496                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3497                 sed -n "/cc1.*$1=/{
3498                             s/.*$1=\\([^ ]*\\).*/\\1/
3499                             p
3500                             q
3501                         }" $TMPE
3502             }
3503             cpu=$(check_native -march || check_native -mcpu)
3504         ;;
3505     esac
3506
3507     test "${cpu:-host}" = host &&
3508         die "--cpu=host not supported with compiler $cc"
3509 fi
3510
3511 # Deal with common $arch aliases
3512 case "$arch" in
3513     aarch64|arm64)
3514         arch="aarch64"
3515     ;;
3516     arm*|iPad*|iPhone*)
3517         arch="arm"
3518     ;;
3519     mips*|IP*)
3520         arch="mips"
3521     ;;
3522     parisc*|hppa*)
3523         arch="parisc"
3524     ;;
3525     "Power Macintosh"|ppc*|powerpc*)
3526         arch="ppc"
3527     ;;
3528     s390|s390x)
3529         arch="s390"
3530     ;;
3531     sh4|sh)
3532         arch="sh4"
3533     ;;
3534     sun4u|sparc*)
3535         arch="sparc"
3536     ;;
3537     tilegx|tile-gx)
3538         arch="tilegx"
3539     ;;
3540     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3541         arch="x86"
3542     ;;
3543 esac
3544
3545 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3546 enable $arch
3547
3548 # Add processor-specific flags
3549 if enabled aarch64; then
3550
3551     case $cpu in
3552         armv*)
3553             cpuflags="-march=$cpu"
3554         ;;
3555         *)
3556             cpuflags="-mcpu=$cpu"
3557         ;;
3558     esac
3559
3560 elif enabled alpha; then
3561
3562     cpuflags="-mcpu=$cpu"
3563
3564 elif enabled arm; then
3565
3566     check_arm_arch() {
3567         check_cpp_condition stddef.h \
3568             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3569             $cpuflags
3570     }
3571
3572     probe_arm_arch() {
3573         if   check_arm_arch 4;        then echo armv4;
3574         elif check_arm_arch 4T;       then echo armv4t;
3575         elif check_arm_arch 5;        then echo armv5;
3576         elif check_arm_arch 5E;       then echo armv5e;
3577         elif check_arm_arch 5T;       then echo armv5t;
3578         elif check_arm_arch 5TE;      then echo armv5te;
3579         elif check_arm_arch 5TEJ;     then echo armv5te;
3580         elif check_arm_arch 6;        then echo armv6;
3581         elif check_arm_arch 6J;       then echo armv6j;
3582         elif check_arm_arch 6K;       then echo armv6k;
3583         elif check_arm_arch 6Z;       then echo armv6z;
3584         elif check_arm_arch 6ZK;      then echo armv6zk;
3585         elif check_arm_arch 6T2;      then echo armv6t2;
3586         elif check_arm_arch 7;        then echo armv7;
3587         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3588         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3589         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3590         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3591         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3592         fi
3593     }
3594
3595     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3596
3597     case $cpu in
3598         armv*)
3599             cpuflags="-march=$cpu"
3600             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3601         ;;
3602         *)
3603             cpuflags="-mcpu=$cpu"
3604             case $cpu in
3605                 cortex-a*)                               subarch=armv7a  ;;
3606                 cortex-r*)                               subarch=armv7r  ;;
3607                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3608                 arm11*)                                  subarch=armv6   ;;
3609                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3610                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3611                 *)                             subarch=$(probe_arm_arch) ;;
3612             esac
3613         ;;
3614     esac
3615
3616     case "$subarch" in
3617         armv5t*)    enable fast_clz                ;;
3618         armv[6-8]*)
3619             enable fast_clz
3620             disabled fast_unaligned || enable fast_unaligned
3621             ;;
3622     esac
3623
3624 elif enabled avr32; then
3625
3626     case $cpu in
3627         ap7[02]0[0-2])
3628             subarch="avr32_ap"
3629             cpuflags="-mpart=$cpu"
3630         ;;
3631         ap)
3632             subarch="avr32_ap"
3633             cpuflags="-march=$cpu"
3634         ;;
3635         uc3[ab]*)
3636             subarch="avr32_uc"
3637             cpuflags="-mcpu=$cpu"
3638         ;;
3639         uc)
3640             subarch="avr32_uc"
3641             cpuflags="-march=$cpu"
3642         ;;
3643     esac
3644
3645 elif enabled bfin; then
3646
3647     cpuflags="-mcpu=$cpu"
3648
3649 elif enabled mips; then
3650
3651     cpuflags="-march=$cpu"
3652
3653     case $cpu in
3654         24kc)
3655             disable mipsfpu
3656             disable mipsdspr1
3657             disable mipsdspr2
3658         ;;
3659         24kf*)
3660             disable mipsdspr1
3661             disable mipsdspr2
3662         ;;
3663         24kec|34kc|1004kc)
3664             disable mipsfpu
3665             disable mipsdspr2
3666         ;;
3667         24kef*|34kf*|1004kf*)
3668             disable mipsdspr2
3669         ;;
3670         74kc)
3671             disable mipsfpu
3672         ;;
3673     esac
3674
3675 elif enabled ppc; then
3676
3677     disable ldbrx
3678
3679     case $(tolower $cpu) in
3680         601|ppc601|powerpc601)
3681             cpuflags="-mcpu=601"
3682             disable altivec
3683         ;;
3684         603*|ppc603*|powerpc603*)
3685             cpuflags="-mcpu=603"
3686             disable altivec
3687         ;;
3688         604*|ppc604*|powerpc604*)
3689             cpuflags="-mcpu=604"
3690             disable altivec
3691         ;;
3692         g3|75*|ppc75*|powerpc75*)
3693             cpuflags="-mcpu=750"
3694             disable altivec
3695         ;;
3696         g4|745*|ppc745*|powerpc745*)
3697             cpuflags="-mcpu=7450"
3698         ;;
3699         74*|ppc74*|powerpc74*)
3700             cpuflags="-mcpu=7400"
3701         ;;
3702         g5|970|ppc970|powerpc970)
3703             cpuflags="-mcpu=970"
3704         ;;
3705         power[3-7]*)
3706             cpuflags="-mcpu=$cpu"
3707         ;;
3708         cell)
3709             cpuflags="-mcpu=cell"
3710             enable ldbrx
3711         ;;
3712         e500mc)
3713             cpuflags="-mcpu=e500mc"
3714             disable altivec
3715         ;;
3716         e500v2)
3717             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3718             disable altivec
3719             disable dcbzl
3720         ;;
3721         e500)
3722             cpuflags="-mcpu=8540 -mhard-float"
3723             disable altivec
3724             disable dcbzl
3725         ;;
3726     esac
3727
3728 elif enabled sparc; then
3729
3730     case $cpu in
3731         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3732             cpuflags="-mcpu=$cpu"
3733         ;;
3734         ultrasparc*|niagara[234])
3735             cpuflags="-mcpu=$cpu"
3736         ;;
3737     esac
3738
3739 elif enabled x86; then
3740
3741     case $cpu in
3742         i[345]86|pentium)
3743             cpuflags="-march=$cpu"
3744             disable mmx
3745         ;;
3746         # targets that do NOT support nopl and conditional mov (cmov)
3747         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3748             cpuflags="-march=$cpu"
3749             disable i686
3750         ;;
3751         # targets that do support nopl and conditional mov (cmov)
3752         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3753         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3754             cpuflags="-march=$cpu"
3755             enable i686
3756             enable fast_cmov
3757         ;;
3758         # targets that do support conditional mov but on which it's slow
3759         pentium4|pentium4m|prescott|nocona)
3760             cpuflags="-march=$cpu"
3761             enable i686
3762             disable fast_cmov
3763         ;;
3764     esac
3765
3766 fi
3767
3768 if [ "$cpu" != generic ]; then
3769     add_cflags  $cpuflags
3770     add_asflags $cpuflags
3771 fi
3772
3773 # compiler sanity check
3774 check_exec <<EOF
3775 int main(void){ return 0; }
3776 EOF
3777 if test "$?" != 0; then
3778     echo "$cc is unable to create an executable file."
3779     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3780         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3781         echo "Only do this if you know what cross compiling means."
3782     fi
3783     die "C compiler test failed."
3784 fi
3785
3786 add_cppflags -D_ISOC99_SOURCE
3787 add_cxxflags -D__STDC_CONSTANT_MACROS
3788 check_cflags -std=c99
3789 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3790 #include <stdlib.h>
3791 EOF
3792 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3793 #include <stdlib.h>
3794 EOF
3795
3796 add_host_cppflags -D_ISOC99_SOURCE
3797 check_host_cflags -std=c99
3798 check_host_cflags -Wall
3799 check_host_cflags -O3
3800
3801 check_64bit(){
3802     arch32=$1
3803     arch64=$2
3804     expr=$3
3805     check_code cc "" "int test[2*($expr) - 1]" &&
3806         subarch=$arch64 || subarch=$arch32
3807 }
3808
3809 case "$arch" in
3810     aarch64|alpha|ia64)
3811         spic=$shared
3812     ;;
3813     mips)
3814         check_64bit mips mips64 '_MIPS_SIM > 1'
3815         spic=$shared
3816     ;;
3817     parisc)
3818         check_64bit parisc parisc64 'sizeof(void *) > 4'
3819         spic=$shared
3820     ;;
3821     ppc)
3822         check_64bit ppc ppc64 'sizeof(void *) > 4'
3823         spic=$shared
3824     ;;
3825     s390)
3826         check_64bit s390 s390x 'sizeof(void *) > 4'
3827         spic=$shared
3828     ;;
3829     sparc)
3830         check_64bit sparc sparc64 'sizeof(void *) > 4'
3831         spic=$shared
3832     ;;
3833     x86)
3834         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3835         if test "$subarch" = "x86_64"; then
3836             spic=$shared
3837         fi
3838     ;;
3839     ppc)
3840         check_cc <<EOF && subarch="ppc64"
3841         int test[(int)sizeof(char*) - 7];
3842 EOF
3843     ;;
3844 esac
3845
3846 enable $subarch
3847 enabled spic && enable_weak pic
3848
3849 # OS specific
3850 case $target_os in
3851     aix)
3852         SHFLAGS=-shared
3853         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3854         enabled shared && add_ldflags -Wl,-brtl
3855         ;;
3856     haiku)
3857         prefix_default="/boot/common"
3858         network_extralibs="-lnetwork"
3859         host_libs=
3860         ;;
3861     sunos)
3862         SHFLAGS='-shared -Wl,-h,$$(@F)'
3863         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3864         network_extralibs="-lsocket -lnsl"
3865         # When using suncc to build, the Solaris linker will mark
3866         # an executable with each instruction set encountered by
3867         # the Solaris assembler.  As our libraries contain their own
3868         # guards for processor-specific code, instead suppress
3869         # generation of the HWCAPS ELF section on Solaris x86 only.
3870         enabled_all suncc x86 &&
3871             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3872             add_ldflags -Wl,-M,mapfile
3873         nm_default='nm -P -g'
3874         ;;
3875     netbsd)
3876         disable symver
3877         oss_indev_extralibs="-lossaudio"
3878         oss_outdev_extralibs="-lossaudio"
3879         enabled gcc || check_ldflags -Wl,-zmuldefs
3880         ;;
3881     openbsd|bitrig)
3882         disable symver
3883         SHFLAGS='-shared'
3884         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3885         SLIB_INSTALL_LINKS=
3886         oss_indev_extralibs="-lossaudio"
3887         oss_outdev_extralibs="-lossaudio"
3888         ;;
3889     dragonfly)
3890         disable symver
3891         ;;
3892     freebsd)
3893         ;;
3894     bsd/os)
3895         add_extralibs -lpoll -lgnugetopt
3896         strip="strip -d"
3897         ;;
3898     darwin)
3899         test "${as#*gas-preprocessor.pl}" != "$as" || gas="${gas:=gas-preprocessor.pl} ${as:=$cc}"
3900         enabled ppc && add_asflags -force_cpusubtype_ALL
3901         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3902         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3903         strip="${strip} -x"
3904         add_ldflags -Wl,-dynamic,-search_paths_first
3905         SLIBSUF=".dylib"
3906         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3907         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3908         objformat="macho"
3909         enabled x86_64 && objformat="macho64"
3910         enabled_any pic shared ||
3911             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3912         ;;
3913     mingw32*)
3914         if test $target_os = "mingw32ce"; then
3915             disable network
3916         else
3917             target_os=mingw32
3918         fi
3919         LIBTARGET=i386
3920         if enabled x86_64; then
3921             LIBTARGET="i386:x86-64"
3922         elif enabled arm; then
3923             LIBTARGET=arm-wince
3924         fi
3925         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3926         check_ldflags -Wl,--nxcompat
3927         check_ldflags -Wl,--dynamicbase
3928         shlibdir_default="$bindir_default"
3929         SLIBPREF=""
3930         SLIBSUF=".dll"
3931         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3932         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3933         dlltool="${cross_prefix}dlltool"
3934         if check_cmd lib.exe -list; then
3935             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3936             if enabled x86_64; then
3937                 LIBTARGET=x64
3938             fi
3939         elif check_cmd $dlltool --version; then
3940             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3941         fi
3942         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3943         SLIB_INSTALL_LINKS=
3944         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3945         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3946         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3947         objformat="win32"
3948         ranlib=:
3949         enable dos_paths
3950         ;;
3951     win32|win64)
3952         disable symver
3953         if enabled shared; then
3954             # Link to the import library instead of the normal static library
3955             # for shared libs.
3956             LD_LIB='%.lib'
3957             # Cannot build both shared and static libs with MSVC or icl.
3958             disable static
3959         fi
3960         shlibdir_default="$bindir_default"
3961         SLIBPREF=""
3962         SLIBSUF=".dll"
3963         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3964         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3965         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3966         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3967         SLIB_INSTALL_LINKS=
3968         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3969         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3970         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3971         objformat="win32"
3972         ranlib=:
3973         enable dos_paths
3974         ;;
3975     cygwin*)
3976         target_os=cygwin
3977         shlibdir_default="$bindir_default"
3978         SLIBPREF="cyg"
3979         SLIBSUF=".dll"
3980         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3981         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3982         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3983         SLIB_INSTALL_LINKS=
3984         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3985         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3986         objformat="win32"
3987         enable dos_paths
3988         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3989         ;;
3990     *-dos|freedos|opendos)
3991         network_extralibs="-lsocket"
3992         objformat="coff"
3993         enable dos_paths
3994         add_cppflags -U__STRICT_ANSI__
3995         ;;
3996     linux)
3997         enable dv1394
3998         ;;
3999     irix*)
4000         target_os=irix
4001         ranlib="echo ignoring ranlib"
4002         ;;
4003     os/2*)
4004         strip="lxlite -CS"
4005         ln_s="cp -f"
4006         objformat="aout"
4007         add_cppflags -D_GNU_SOURCE
4008         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4009         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4010         LIBSUF="_s.a"
4011         SLIBPREF=""
4012         SLIBSUF=".dll"
4013         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4014         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4015         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4016             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4017             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4018             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4019             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4020             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4021         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4022             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4023         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4024         enable dos_paths
4025         enable_weak os2threads
4026         ;;
4027     gnu/kfreebsd)
4028         add_cppflags -D_BSD_SOURCE
4029         ;;
4030     gnu)
4031         ;;
4032     qnx)
4033         add_cppflags -D_QNX_SOURCE
4034         network_extralibs="-lsocket"
4035         ;;
4036     symbian)
4037         SLIBSUF=".dll"
4038         enable dos_paths
4039         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4040         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4041         add_ldflags -Wl,--target1-abs,--no-undefined \
4042                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4043                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4044         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4045                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4046                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4047         ;;
4048     osf1)
4049         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4050         ;;
4051     minix)
4052         ;;
4053     plan9)
4054         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
4055                      -D_REENTRANT_SOURCE        \
4056                    &n