Merge commit 'b5aa48551300eed678aaea86ced7086758598a35'
[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 "$logfile" produced by configure as this will help
420 solve the problem.
421 EOF
422     fi
423     exit 1
424 }
425
426 # Avoid locale weirdness, besides we really just want to translate ASCII.
427 toupper(){
428     echo "$@" | 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     huffyuvdsp
1809     huffyuvencdsp
1810     intrax8
1811     lgplv3
1812     llviddsp
1813     lpc
1814     mpegaudio
1815     mpegaudiodsp
1816     mpegvideo
1817     mpegvideoenc
1818     nettle
1819     rangecoder
1820     riffdec
1821     riffenc
1822     rtpdec
1823     rtpenc_chain
1824     sinewin
1825     tpeldsp
1826     videodsp
1827     vp3dsp
1828 "
1829
1830 CMDLINE_SELECT="
1831     $ARCH_EXT_LIST
1832     $CONFIG_LIST
1833     $HAVE_LIST_CMDLINE
1834     $THREADS_LIST
1835     asm
1836     cross_compile
1837     debug
1838     extra_warnings
1839     logging
1840     lto
1841     optimizations
1842     rpath
1843     stripping
1844 "
1845
1846 PATHS_LIST="
1847     bindir
1848     datadir
1849     docdir
1850     incdir
1851     libdir
1852     mandir
1853     prefix
1854     shlibdir
1855 "
1856
1857 CMDLINE_SET="
1858     $PATHS_LIST
1859     ar
1860     arch
1861     as
1862     assert_level
1863     build_suffix
1864     cc
1865     cpu
1866     cross_prefix
1867     cxx
1868     dep_cc
1869     extra_version
1870     gas
1871     host_cc
1872     host_cflags
1873     host_ld
1874     host_ldflags
1875     host_libs
1876     host_os
1877     install
1878     ld
1879     logfile
1880     malloc_prefix
1881     nm
1882     optflags
1883     pkg_config
1884     pkg_config_flags
1885     progs_suffix
1886     random_seed
1887     ranlib
1888     samples
1889     strip
1890     sysinclude
1891     sysroot
1892     target_exec
1893     target_os
1894     target_path
1895     target_samples
1896     tempprefix
1897     toolchain
1898     valgrind
1899     yasmexe
1900 "
1901
1902 CMDLINE_APPEND="
1903     extra_cflags
1904     extra_cxxflags
1905     host_cppflags
1906 "
1907
1908 # code dependency declarations
1909
1910 # architecture extensions
1911
1912 armv5te_deps="arm"
1913 armv6_deps="arm"
1914 armv6t2_deps="arm"
1915 armv8_deps="aarch64"
1916 neon_deps_any="aarch64 arm"
1917 vfp_deps_any="aarch64 arm"
1918 vfpv3_deps="vfp"
1919
1920 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1921
1922 mipsfpu_deps="mips"
1923 mips32r2_deps="mips"
1924 mipsdspr1_deps="mips"
1925 mipsdspr2_deps="mips"
1926
1927 altivec_deps="ppc"
1928 ppc4xx_deps="ppc"
1929
1930 cpunop_deps="i686"
1931 x86_64_select="i686"
1932 x86_64_suggest="fast_cmov"
1933
1934 amd3dnow_deps="mmx"
1935 amd3dnowext_deps="amd3dnow"
1936 i686_deps="x86"
1937 mmx_deps="x86"
1938 mmxext_deps="mmx"
1939 sse_deps="mmxext"
1940 sse2_deps="sse"
1941 sse3_deps="sse2"
1942 ssse3_deps="sse3"
1943 sse4_deps="ssse3"
1944 sse42_deps="sse4"
1945 avx_deps="sse42"
1946 xop_deps="avx"
1947 fma3_deps="avx"
1948 fma4_deps="avx"
1949 avx2_deps="avx"
1950
1951 mmx_external_deps="yasm"
1952 mmx_inline_deps="inline_asm"
1953 mmx_suggest="mmx_external mmx_inline"
1954
1955 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86_SIMD); do
1956     eval dep=\$${ext}_deps
1957     eval ${ext}_external_deps='"${dep}_external"'
1958     eval ${ext}_inline_deps='"${dep}_inline"'
1959     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1960 done
1961
1962 aligned_stack_if_any="aarch64 ppc x86"
1963 fast_64bit_if_any="aarch64 alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1964 fast_clz_if_any="aarch64 alpha avr32 mips ppc x86"
1965 fast_unaligned_if_any="aarch64 ppc x86"
1966
1967 need_memalign="altivec neon sse"
1968
1969 # system capabilities
1970
1971 symver_if_any="symver_asm_label symver_gnu_asm"
1972
1973 # threading support
1974 atomics_gcc_if="sync_val_compare_and_swap"
1975 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1976 atomics_win32_if="MemoryBarrier"
1977 atomics_native_if_any="$ATOMICS_LIST"
1978 w32threads_deps="atomics_native"
1979 threads_if_any="$THREADS_LIST"
1980
1981 # subsystems
1982 dct_select="rdft"
1983 error_resilience_select="dsputil"
1984 frame_thread_encoder_deps="encoders threads"
1985 mdct_select="fft"
1986 rdft_select="fft"
1987 mpegaudio_select="mpegaudiodsp"
1988 mpegaudiodsp_select="dct"
1989 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1990 mpegvideoenc_select="dsputil mpegvideo"
1991
1992 # decoders / encoders
1993 aac_decoder_select="mdct sinewin"
1994 aac_encoder_select="audio_frame_queue mdct sinewin"
1995 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1996 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1997 ac3_fixed_decoder_select="mdct ac3dsp ac3_parser dsputil"
1998 ac3_encoder_select="mdct ac3dsp dsputil"
1999 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
2000 aic_decoder_select="dsputil golomb"
2001 alac_encoder_select="lpc"
2002 als_decoder_select="dsputil"
2003 amrnb_decoder_select="lsp"
2004 amrwb_decoder_select="lsp"
2005 amv_decoder_select="sp5x_decoder exif"
2006 amv_encoder_select="aandcttables"
2007 ape_decoder_select="dsputil"
2008 asv1_decoder_select="dsputil"
2009 asv1_encoder_select="dsputil"
2010 asv2_decoder_select="dsputil"
2011 asv2_encoder_select="dsputil"
2012 atrac1_decoder_select="mdct sinewin"
2013 atrac3_decoder_select="mdct"
2014 atrac3p_decoder_select="mdct sinewin"
2015 avrn_decoder_select="exif"
2016 bink_decoder_select="dsputil hpeldsp"
2017 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
2018 binkaudio_rdft_decoder_select="mdct rdft sinewin"
2019 cavs_decoder_select="dsputil golomb h264chroma videodsp"
2020 cllc_decoder_select="dsputil"
2021 comfortnoise_encoder_select="lpc"
2022 cook_decoder_select="dsputil mdct sinewin"
2023 cscd_decoder_select="lzo"
2024 cscd_decoder_suggest="zlib"
2025 dca_decoder_select="mdct"
2026 dirac_decoder_select="dsputil dwt golomb videodsp"
2027 dnxhd_decoder_select="dsputil"
2028 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
2029 dvvideo_decoder_select="dsputil"
2030 dvvideo_encoder_select="dsputil"
2031 dxa_decoder_select="zlib"
2032 eac3_decoder_select="ac3_decoder"
2033 eac3_encoder_select="ac3_encoder"
2034 eamad_decoder_select="aandcttables dsputil mpegvideo"
2035 eatgq_decoder_select="aandcttables"
2036 eatqi_decoder_select="aandcttables dsputil error_resilience mpegvideo"
2037 exr_decoder_select="zlib"
2038 ffv1_decoder_select="golomb rangecoder"
2039 ffv1_encoder_select="rangecoder"
2040 ffvhuff_decoder_select="huffyuv_decoder"
2041 ffvhuff_encoder_select="huffyuv_encoder"
2042 fic_decoder_select="golomb"
2043 flac_decoder_select="golomb"
2044 flac_encoder_select="dsputil golomb lpc"
2045 flashsv_decoder_select="zlib"
2046 flashsv_encoder_select="zlib"
2047 flashsv2_encoder_select="zlib"
2048 flashsv2_decoder_select="zlib"
2049 flv_decoder_select="h263_decoder"
2050 flv_encoder_select="h263_encoder"
2051 fourxm_decoder_select="dsputil"
2052 fraps_decoder_select="dsputil huffman"
2053 g2m_decoder_select="dsputil zlib"
2054 g729_decoder_select="dsputil"
2055 h261_decoder_select="error_resilience mpegvideo"
2056 h261_encoder_select="aandcttables mpegvideoenc"
2057 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
2058 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
2059 h263i_decoder_select="h263_decoder"
2060 h263p_encoder_select="h263_encoder"
2061 h264_decoder_select="cabac golomb h264chroma h264dsp h264pred h264qpel videodsp"
2062 h264_decoder_suggest="error_resilience"
2063 hevc_decoder_select="cabac dsputil golomb videodsp"
2064 huffyuv_decoder_select="dsputil huffyuvdsp llviddsp"
2065 huffyuv_encoder_select="dsputil huffman huffyuvencdsp llviddsp"
2066 iac_decoder_select="imc_decoder"
2067 imc_decoder_select="dsputil fft mdct sinewin"
2068 indeo3_decoder_select="hpeldsp"
2069 interplay_video_decoder_select="hpeldsp"
2070 jpegls_decoder_select="golomb mjpeg_decoder"
2071 jpegls_encoder_select="golomb"
2072 jv_decoder_select="dsputil"
2073 lagarith_decoder_select="huffyuvdsp"
2074 ljpeg_encoder_select="aandcttables mpegvideoenc"
2075 loco_decoder_select="golomb"
2076 mdec_decoder_select="dsputil error_resilience mpegvideo"
2077 metasound_decoder_select="lsp mdct sinewin"
2078 mimic_decoder_select="dsputil hpeldsp"
2079 mjpeg_decoder_select="dsputil hpeldsp exif"
2080 mjpeg_encoder_select="aandcttables mpegvideoenc"
2081 mjpegb_decoder_select="mjpeg_decoder"
2082 mlp_decoder_select="mlp_parser"
2083 motionpixels_decoder_select="dsputil"
2084 mp1_decoder_select="mpegaudio"
2085 mp1float_decoder_select="mpegaudio"
2086 mp2_decoder_select="mpegaudio"
2087 mp2float_decoder_select="mpegaudio"
2088 mp3_decoder_select="mpegaudio"
2089 mp3adu_decoder_select="mpegaudio"
2090 mp3adufloat_decoder_select="mpegaudio"
2091 mp3float_decoder_select="mpegaudio"
2092 mp3on4_decoder_select="mpegaudio"
2093 mp3on4float_decoder_select="mpegaudio"
2094 mpc7_decoder_select="dsputil mpegaudiodsp"
2095 mpc8_decoder_select="mpegaudiodsp"
2096 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
2097 mpeg_xvmc_decoder_select="mpeg2video_decoder"
2098 mpeg1video_decoder_select="error_resilience mpegvideo"
2099 mpeg1video_encoder_select="aandcttables mpegvideoenc h263dsp"
2100 mpeg2video_decoder_select="error_resilience mpegvideo"
2101 mpeg2video_encoder_select="aandcttables mpegvideoenc h263dsp"
2102 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
2103 mpeg4_encoder_select="h263_encoder"
2104 msmpeg4v1_decoder_select="h263_decoder"
2105 msmpeg4v2_decoder_select="h263_decoder"
2106 msmpeg4v2_encoder_select="h263_encoder"
2107 msmpeg4v3_decoder_select="h263_decoder"
2108 msmpeg4v3_encoder_select="h263_encoder"
2109 mss2_decoder_select="error_resilience vc1_decoder"
2110 mxpeg_decoder_select="mjpeg_decoder"
2111 nellymoser_decoder_select="mdct sinewin"
2112 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
2113 nuv_decoder_select="dsputil lzo"
2114 on2avc_decoder_select="mdct"
2115 opus_decoder_deps="swresample"
2116 png_decoder_select="zlib"
2117 png_encoder_select="huffyuvencdsp zlib"
2118 prores_decoder_select="dsputil"
2119 prores_encoder_select="dsputil"
2120 qcelp_decoder_select="lsp"
2121 qdm2_decoder_select="mdct rdft mpegaudiodsp"
2122 ra_144_encoder_select="audio_frame_queue lpc"
2123 ralf_decoder_select="golomb"
2124 rawvideo_decoder_select="dsputil"
2125 rtjpeg_decoder_select="dsputil"
2126 rv10_decoder_select="error_resilience h263_decoder h263dsp"
2127 rv10_encoder_select="h263_encoder"
2128 rv20_decoder_select="error_resilience h263_decoder h263dsp"
2129 rv20_encoder_select="h263_encoder"
2130 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2131 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
2132 shorten_decoder_select="golomb"
2133 sipr_decoder_select="lsp"
2134 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
2135 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
2136 sonic_decoder_select="golomb rangecoder"
2137 sonic_encoder_select="golomb rangecoder"
2138 sonic_ls_encoder_select="golomb rangecoder"
2139 sp5x_decoder_select="mjpeg_decoder"
2140 svq1_decoder_select="hpeldsp"
2141 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
2142 svq3_decoder_select="h264_decoder hpeldsp tpeldsp"
2143 svq3_decoder_suggest="zlib"
2144 tak_decoder_select="dsputil"
2145 theora_decoder_select="vp3_decoder"
2146 thp_decoder_select="mjpeg_decoder"
2147 tiff_decoder_suggest="zlib"
2148 tiff_encoder_suggest="zlib"
2149 truehd_decoder_select="mlp_parser"
2150 truemotion2_decoder_select="dsputil"
2151 truespeech_decoder_select="dsputil"
2152 tscc_decoder_select="zlib"
2153 twinvq_decoder_select="mdct lsp sinewin"
2154 utvideo_decoder_select="dsputil"
2155 utvideo_encoder_select="dsputil huffman huffyuvencdsp"
2156 vble_decoder_select="huffyuvdsp"
2157 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel intrax8"
2158 vc1image_decoder_select="vc1_decoder"
2159 vorbis_decoder_select="mdct"
2160 vorbis_encoder_select="mdct"
2161 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2162 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2163 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2164 vp6a_decoder_select="vp6_decoder"
2165 vp6f_decoder_select="vp6_decoder"
2166 vp7_decoder_select="h264pred videodsp"
2167 vp8_decoder_select="h264pred videodsp"
2168 vp9_decoder_select="videodsp vp9_parser"
2169 webp_decoder_select="vp8_decoder"
2170 wmapro_decoder_select="mdct sinewin"
2171 wmav1_decoder_select="mdct sinewin"
2172 wmav1_encoder_select="mdct sinewin"
2173 wmav2_decoder_select="mdct sinewin"
2174 wmav2_encoder_select="mdct sinewin"
2175 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2176 wmv1_decoder_select="h263_decoder"
2177 wmv1_encoder_select="h263_encoder"
2178 wmv2_decoder_select="h263_decoder intrax8 videodsp"
2179 wmv2_encoder_select="h263_encoder"
2180 wmv3_decoder_select="vc1_decoder"
2181 wmv3image_decoder_select="wmv3_decoder"
2182 zerocodec_decoder_select="zlib"
2183 zlib_decoder_select="zlib"
2184 zlib_encoder_select="zlib"
2185 zmbv_decoder_select="zlib"
2186 zmbv_encoder_select="zlib"
2187
2188 # hardware accelerators
2189 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2190 dxva2_deps="dxva2api_h"
2191 vaapi_deps="va_va_h"
2192 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2193 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2194 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2195 xvmc_deps="X11_extensions_XvMClib_h"
2196
2197 h263_vaapi_hwaccel_deps="vaapi"
2198 h263_vaapi_hwaccel_select="h263_decoder"
2199 h263_vdpau_hwaccel_deps="vdpau"
2200 h263_vdpau_hwaccel_select="h263_decoder"
2201 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2202 h264_dxva2_hwaccel_deps="dxva2"
2203 h264_dxva2_hwaccel_select="h264_decoder"
2204 h264_vaapi_hwaccel_deps="vaapi"
2205 h264_vaapi_hwaccel_select="h264_decoder"
2206 h264_vda_decoder_deps="vda"
2207 h264_vda_decoder_select="h264_decoder"
2208 h264_vda_hwaccel_deps="vda"
2209 h264_vda_hwaccel_select="h264_decoder"
2210 h264_vda_old_hwaccel_deps="vda"
2211 h264_vda_old_hwaccel_select="h264_decoder"
2212 h264_vdpau_decoder_deps="vdpau"
2213 h264_vdpau_decoder_select="h264_decoder"
2214 h264_vdpau_hwaccel_deps="vdpau"
2215 h264_vdpau_hwaccel_select="h264_decoder"
2216 mpeg_vdpau_decoder_deps="vdpau"
2217 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2218 mpeg_xvmc_hwaccel_deps="xvmc"
2219 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2220 mpeg1_vdpau_decoder_deps="vdpau"
2221 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2222 mpeg1_vdpau_hwaccel_deps="vdpau"
2223 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2224 mpeg1_xvmc_hwaccel_deps="xvmc"
2225 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2226 mpeg2_crystalhd_decoder_select="crystalhd"
2227 mpeg2_dxva2_hwaccel_deps="dxva2"
2228 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2229 mpeg2_vaapi_hwaccel_deps="vaapi"
2230 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2231 mpeg2_vdpau_hwaccel_deps="vdpau"
2232 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2233 mpeg2_xvmc_hwaccel_deps="xvmc"
2234 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2235 mpeg4_crystalhd_decoder_select="crystalhd"
2236 mpeg4_vaapi_hwaccel_deps="vaapi"
2237 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2238 mpeg4_vdpau_decoder_deps="vdpau"
2239 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2240 mpeg4_vdpau_hwaccel_deps="vdpau"
2241 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2242 msmpeg4_crystalhd_decoder_select="crystalhd"
2243 vc1_crystalhd_decoder_select="crystalhd"
2244 vc1_dxva2_hwaccel_deps="dxva2"
2245 vc1_dxva2_hwaccel_select="vc1_decoder"
2246 vc1_vaapi_hwaccel_deps="vaapi"
2247 vc1_vaapi_hwaccel_select="vc1_decoder"
2248 vc1_vdpau_decoder_deps="vdpau"
2249 vc1_vdpau_decoder_select="vc1_decoder"
2250 vc1_vdpau_hwaccel_deps="vdpau"
2251 vc1_vdpau_hwaccel_select="vc1_decoder"
2252 wmv3_crystalhd_decoder_select="crystalhd"
2253 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2254 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2255 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2256 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2257
2258 # parsers
2259 h264_parser_select="h264_decoder"
2260 hevc_parser_select="hevc_decoder"
2261 mpeg4video_parser_select="error_resilience h263dsp mpegvideo"
2262 mpegvideo_parser_select="error_resilience mpegvideo"
2263 vc1_parser_select="mpegvideo"
2264
2265 # external libraries
2266 libaacplus_encoder_deps="libaacplus"
2267 libcelt_decoder_deps="libcelt"
2268 libfaac_encoder_deps="libfaac"
2269 libfaac_encoder_select="audio_frame_queue"
2270 libfdk_aac_decoder_deps="libfdk_aac"
2271 libfdk_aac_encoder_deps="libfdk_aac"
2272 libfdk_aac_encoder_select="audio_frame_queue"
2273 libgme_demuxer_deps="libgme"
2274 libgsm_decoder_deps="libgsm"
2275 libgsm_encoder_deps="libgsm"
2276 libgsm_ms_decoder_deps="libgsm"
2277 libgsm_ms_encoder_deps="libgsm"
2278 libilbc_decoder_deps="libilbc"
2279 libilbc_encoder_deps="libilbc"
2280 libmodplug_demuxer_deps="libmodplug"
2281 libmp3lame_encoder_deps="libmp3lame"
2282 libmp3lame_encoder_select="audio_frame_queue"
2283 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2284 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2285 libopencore_amrnb_encoder_select="audio_frame_queue"
2286 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2287 libopenjpeg_decoder_deps="libopenjpeg"
2288 libopenjpeg_encoder_deps="libopenjpeg"
2289 libopus_decoder_deps="libopus"
2290 libopus_encoder_deps="libopus"
2291 libopus_encoder_select="audio_frame_queue"
2292 libquvi_demuxer_deps="libquvi"
2293 libschroedinger_decoder_deps="libschroedinger"
2294 libschroedinger_encoder_deps="libschroedinger"
2295 libshine_encoder_deps="libshine"
2296 libshine_encoder_select="audio_frame_queue"
2297 libspeex_decoder_deps="libspeex"
2298 libspeex_encoder_deps="libspeex"
2299 libspeex_encoder_select="audio_frame_queue"
2300 libstagefright_h264_decoder_deps="libstagefright_h264"
2301 libtheora_encoder_deps="libtheora"
2302 libtwolame_encoder_deps="libtwolame"
2303 libvo_aacenc_encoder_deps="libvo_aacenc"
2304 libvo_aacenc_encoder_select="audio_frame_queue"
2305 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2306 libvorbis_decoder_deps="libvorbis"
2307 libvorbis_encoder_deps="libvorbis"
2308 libvorbis_encoder_select="audio_frame_queue"
2309 libvpx_vp8_decoder_deps="libvpx"
2310 libvpx_vp8_encoder_deps="libvpx"
2311 libvpx_vp9_decoder_deps="libvpx"
2312 libvpx_vp9_encoder_deps="libvpx"
2313 libwavpack_encoder_deps="libwavpack"
2314 libwebp_encoder_deps="libwebp"
2315 libx264_encoder_deps="libx264"
2316 libx264rgb_encoder_deps="libx264"
2317 libx265_encoder_deps="libx265"
2318 libxavs_encoder_deps="libxavs"
2319 libxvid_encoder_deps="libxvid"
2320 libutvideo_decoder_deps="libutvideo"
2321 libutvideo_encoder_deps="libutvideo"
2322 libzvbi_teletext_decoder_deps="libzvbi"
2323
2324 # demuxers / muxers
2325 ac3_demuxer_select="ac3_parser"
2326 asf_demuxer_select="riffdec"
2327 asf_muxer_select="riffenc"
2328 asf_stream_muxer_select="asf_muxer"
2329 avi_demuxer_select="riffdec exif"
2330 avi_muxer_select="riffenc"
2331 avisynth_demuxer_deps="avisynth"
2332 avisynth_demuxer_select="riffdec"
2333 caf_demuxer_select="riffdec"
2334 dirac_demuxer_select="dirac_parser"
2335 dts_demuxer_select="dca_parser"
2336 dtshd_demuxer_select="dca_parser"
2337 dxa_demuxer_select="riffdec"
2338 eac3_demuxer_select="ac3_parser"
2339 f4v_muxer_select="mov_muxer"
2340 flac_demuxer_select="flac_parser"
2341 hds_muxer_select="flv_muxer"
2342 hls_muxer_select="mpegts_muxer"
2343 image2_alias_pix_demuxer_select="image2_demuxer"
2344 image2_brender_pix_demuxer_select="image2_demuxer"
2345 ipod_muxer_select="mov_muxer"
2346 ismv_muxer_select="mov_muxer"
2347 libnut_demuxer_deps="libnut"
2348 libnut_muxer_deps="libnut"
2349 matroska_audio_muxer_select="matroska_muxer"
2350 matroska_demuxer_select="riffdec"
2351 matroska_demuxer_suggest="bzlib lzo zlib"
2352 matroska_muxer_select="riffenc"
2353 mmf_muxer_select="riffenc"
2354 mov_demuxer_select="riffdec"
2355 mov_demuxer_suggest="zlib"
2356 mov_muxer_select="riffenc rtpenc_chain"
2357 mp3_demuxer_select="mpegaudio_parser"
2358 mp4_muxer_select="mov_muxer"
2359 mpegts_muxer_select="adts_muxer latm_muxer"
2360 mpegtsraw_demuxer_select="mpegts_demuxer"
2361 mxf_d10_muxer_select="mxf_muxer"
2362 nut_muxer_select="riffenc"
2363 nuv_demuxer_select="riffdec"
2364 ogg_demuxer_select="golomb"
2365 psp_muxer_select="mov_muxer"
2366 rtp_demuxer_select="sdp_demuxer"
2367 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2368 rtsp_demuxer_select="http_protocol rtpdec"
2369 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2370 sap_demuxer_select="sdp_demuxer"
2371 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2372 sdp_demuxer_select="rtpdec"
2373 smoothstreaming_muxer_select="ismv_muxer"
2374 spdif_muxer_select="aac_parser"
2375 tak_demuxer_select="tak_parser"
2376 tg2_muxer_select="mov_muxer"
2377 tgp_muxer_select="mov_muxer"
2378 vobsub_demuxer_select="mpegps_demuxer"
2379 w64_demuxer_select="wav_demuxer"
2380 w64_muxer_select="wav_muxer"
2381 wav_demuxer_select="riffdec"
2382 wav_muxer_select="riffenc"
2383 webm_muxer_select="riffenc"
2384 wtv_demuxer_select="riffdec"
2385 wtv_muxer_select="riffenc"
2386 xmv_demuxer_select="riffdec"
2387 xwma_demuxer_select="riffdec"
2388
2389 # indevs / outdevs
2390 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2391 alsa_outdev_deps="alsa_asoundlib_h"
2392 avfoundation_indev_extralibs="-framework CoreVideo -framework Foundation -framework AVFoundation -framework CoreMedia"
2393 avfoundation_indev_select="avfoundation"
2394 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2395 caca_outdev_deps="libcaca"
2396 decklink_outdev_deps="decklink pthreads"
2397 decklink_outdev_extralibs="-lstdc++"
2398 dshow_indev_deps="IBaseFilter"
2399 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2400 dv1394_indev_deps="dv1394"
2401 dv1394_indev_select="dv_demuxer"
2402 fbdev_indev_deps="linux_fb_h"
2403 fbdev_outdev_deps="linux_fb_h"
2404 gdigrab_indev_deps="CreateDIBSection"
2405 gdigrab_indev_extralibs="-lgdi32"
2406 gdigrab_indev_select="bmp_decoder"
2407 iec61883_indev_deps="libiec61883"
2408 jack_indev_deps="jack_jack_h sem_timedwait"
2409 lavfi_indev_deps="avfilter"
2410 libcdio_indev_deps="libcdio"
2411 libdc1394_indev_deps="libdc1394"
2412 libv4l2_indev_deps="libv4l2"
2413 openal_indev_deps="openal"
2414 opengl_outdev_deps="opengl"
2415 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2416 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2417 pulse_indev_deps="libpulse"
2418 pulse_outdev_deps="libpulse"
2419 qtkit_indev_extralibs="-framework QTKit -framework Foundation -framework QuartzCore"
2420 qtkit_indev_select="qtkit"
2421 sdl_outdev_deps="sdl"
2422 sndio_indev_deps="sndio_h"
2423 sndio_outdev_deps="sndio_h"
2424 v4l_indev_deps="linux_videodev_h"
2425 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2426 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2427 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2428 vfwcap_indev_extralibs="-lavicap32"
2429 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2430 xv_outdev_extralibs="-lXv -lX11 -lXext"
2431 x11grab_indev_deps="x11grab"
2432
2433 # protocols
2434 bluray_protocol_deps="libbluray"
2435 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2436 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2437 ffrtmpcrypt_protocol_select="tcp_protocol"
2438 ffrtmphttp_protocol_deps="!librtmp_protocol"
2439 ffrtmphttp_protocol_select="http_protocol"
2440 ftp_protocol_select="tcp_protocol"
2441 gopher_protocol_select="network"
2442 http_protocol_select="tcp_protocol"
2443 httpproxy_protocol_select="tcp_protocol"
2444 https_protocol_select="tls_protocol"
2445 librtmp_protocol_deps="librtmp"
2446 librtmpe_protocol_deps="librtmp"
2447 librtmps_protocol_deps="librtmp"
2448 librtmpt_protocol_deps="librtmp"
2449 librtmpte_protocol_deps="librtmp"
2450 libssh_protocol_deps="libssh"
2451 mmsh_protocol_select="http_protocol"
2452 mmst_protocol_select="network"
2453 rtmp_protocol_deps="!librtmp_protocol"
2454 rtmp_protocol_select="tcp_protocol"
2455 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2456 rtmps_protocol_deps="!librtmp_protocol"
2457 rtmps_protocol_select="tls_protocol"
2458 rtmpt_protocol_select="ffrtmphttp_protocol"
2459 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2460 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2461 rtp_protocol_select="udp_protocol"
2462 sctp_protocol_deps="struct_sctp_event_subscribe"
2463 sctp_protocol_select="network"
2464 srtp_protocol_select="rtp_protocol"
2465 tcp_protocol_select="network"
2466 tls_protocol_deps_any="openssl gnutls"
2467 tls_protocol_select="tcp_protocol"
2468 udp_protocol_select="network"
2469 unix_protocol_deps="sys_un_h"
2470 unix_protocol_select="network"
2471
2472 # filters
2473 aconvert_filter_deps="swresample"
2474 amovie_filter_deps="avcodec avformat"
2475 aresample_filter_deps="swresample"
2476 ass_filter_deps="libass"
2477 asyncts_filter_deps="avresample"
2478 atempo_filter_deps="avcodec"
2479 atempo_filter_select="rdft"
2480 azmq_filter_deps="libzmq"
2481 blackframe_filter_deps="gpl"
2482 boxblur_filter_deps="gpl"
2483 bs2b_filter_deps="libbs2b"
2484 colormatrix_filter_deps="gpl"
2485 cropdetect_filter_deps="gpl"
2486 dctdnoiz_filter_deps="avcodec"
2487 dctdnoiz_filter_select="dct"
2488 delogo_filter_deps="gpl"
2489 deshake_filter_deps="avcodec"
2490 deshake_filter_select="dsputil"
2491 drawtext_filter_deps="libfreetype"
2492 ebur128_filter_deps="gpl"
2493 flite_filter_deps="libflite"
2494 frei0r_filter_deps="frei0r dlopen"
2495 frei0r_filter_extralibs='$ldl'
2496 frei0r_src_filter_deps="frei0r dlopen"
2497 frei0r_src_filter_extralibs='$ldl'
2498 geq_filter_deps="gpl"
2499 histeq_filter_deps="gpl"
2500 hqdn3d_filter_deps="gpl"
2501 interlace_filter_deps="gpl"
2502 kerndeint_filter_deps="gpl"
2503 ladspa_filter_deps="ladspa dlopen"
2504 ladspa_filter_extralibs='$ldl'
2505 mcdeint_filter_deps="avcodec gpl"
2506 movie_filter_deps="avcodec avformat"
2507 mp_filter_deps="gpl avcodec swscale inline_asm"
2508 mpdecimate_filter_deps="gpl avcodec"
2509 mptestsrc_filter_deps="gpl"
2510 negate_filter_deps="lut_filter"
2511 perspective_filter_deps="gpl"
2512 ocv_filter_deps="libopencv"
2513 owdenoise_filter_deps="gpl"
2514 pan_filter_deps="swresample"
2515 phase_filter_deps="gpl"
2516 pp_filter_deps="gpl postproc"
2517 pullup_filter_deps="gpl"
2518 removelogo_filter_deps="avcodec avformat swscale"
2519 resample_filter_deps="avresample"
2520 sab_filter_deps="gpl swscale"
2521 scale_filter_deps="swscale"
2522 smartblur_filter_deps="gpl swscale"
2523 showspectrum_filter_deps="avcodec"
2524 showspectrum_filter_select="rdft"
2525 spp_filter_deps="gpl avcodec"
2526 spp_filter_select="fft"
2527 stereo3d_filter_deps="gpl"
2528 subtitles_filter_deps="avformat avcodec libass"
2529 super2xsai_filter_deps="gpl"
2530 tinterlace_filter_deps="gpl"
2531 vidstabdetect_filter_deps="libvidstab"
2532 vidstabtransform_filter_deps="libvidstab"
2533 pixfmts_super2xsai_test_deps="super2xsai_filter"
2534 tinterlace_merge_test_deps="tinterlace_filter"
2535 tinterlace_pad_test_deps="tinterlace_filter"
2536 zmq_filter_deps="libzmq"
2537
2538 # examples
2539 avio_reading="avformat avcodec avutil"
2540 avcodec_example_deps="avcodec avutil"
2541 demuxing_decoding_example_deps="avcodec avformat avutil"
2542 filter_audio_example_deps="avfilter avutil"
2543 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2544 filtering_video_example_deps="avfilter avcodec avformat avutil"
2545 metadata_example_deps="avformat avutil"
2546 muxing_example_deps="avcodec avformat avutil swscale"
2547 remuxing_example_deps="avcodec avformat avutil"
2548 resampling_audio_example_deps="avutil swresample"
2549 scaling_video_example_deps="avutil swscale"
2550 transcode_aac_example_deps="avcodec avformat swresample"
2551 transcoding_example_deps="avfilter avcodec avformat avutil"
2552
2553 # libraries, in linking order
2554 avcodec_deps="avutil"
2555 avdevice_deps="avformat avcodec avutil"
2556 avfilter_deps="avutil"
2557 avformat_deps="avcodec avutil"
2558 avresample_deps="avutil"
2559 postproc_deps="avutil gpl"
2560 swresample_deps="avutil"
2561 swscale_deps="avutil"
2562
2563 # programs
2564 ffmpeg_deps="avcodec avfilter avformat swresample"
2565 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2566                null_filter
2567                setpts_filter trim_filter"
2568 ffplay_deps="avcodec avformat swscale swresample sdl"
2569 ffplay_libs='$sdl_libs'
2570 ffplay_select="rdft crop_filter transpose_filter hflip_filter vflip_filter rotate_filter"
2571 ffprobe_deps="avcodec avformat"
2572 ffserver_deps="avformat fork sarestart"
2573 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2574
2575 # documentation
2576 podpages_deps="perl"
2577 manpages_deps="perl pod2man"
2578 htmlpages_deps="perl texi2html"
2579 txtpages_deps="perl makeinfo"
2580 doc_deps_any="manpages htmlpages podpages txtpages"
2581
2582 # default parameters
2583
2584 logfile="config.log"
2585
2586 # installation paths
2587 prefix_default="/usr/local"
2588 bindir_default='${prefix}/bin'
2589 datadir_default='${prefix}/share/ffmpeg'
2590 docdir_default='${prefix}/share/doc/ffmpeg'
2591 incdir_default='${prefix}/include'
2592 libdir_default='${prefix}/lib'
2593 mandir_default='${prefix}/share/man'
2594 shlibdir_default="$libdir_default"
2595
2596 # toolchain
2597 ar_default="ar"
2598 cc_default="gcc"
2599 cxx_default="g++"
2600 host_cc_default="gcc"
2601 cp_f="cp -f"
2602 install="install"
2603 ln_s="ln -s -f"
2604 nm_default="nm -g"
2605 objformat="elf"
2606 pkg_config_default=pkg-config
2607 ranlib_default="ranlib"
2608 strip_default="strip"
2609 yasmexe_default="yasm"
2610 windres_default="windres"
2611
2612 nogas=":"
2613
2614 # OS
2615 target_os_default=$(tolower $(uname -s))
2616 host_os=$target_os_default
2617
2618 # machine
2619 if test "$target_os_default" = aix; then
2620     arch_default=$(uname -p)
2621 else
2622     arch_default=$(uname -m)
2623 fi
2624 cpu="generic"
2625
2626 # configurable options
2627 enable $PROGRAM_LIST
2628 enable $DOCUMENT_LIST
2629 enable $EXAMPLE_LIST
2630 enable $(filter_out avresample $LIBRARY_LIST)
2631 enable stripping
2632
2633 enable asm
2634 enable debug
2635 enable doc
2636 enable optimizations
2637 enable runtime_cpudetect
2638 enable safe_bitstream_reader
2639 enable static
2640 enable swscale_alpha
2641
2642 # Enable hwaccels by default.
2643 enable dxva2 vaapi vda vdpau xvmc
2644 enable xlib
2645
2646 # build settings
2647 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2648 LIBPREF="lib"
2649 LIBSUF=".a"
2650 FULLNAME='$(NAME)$(BUILDSUF)'
2651 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2652 SLIBPREF="lib"
2653 SLIBSUF=".so"
2654 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2655 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2656 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2657 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2658 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2659 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2660
2661 asflags_filter=echo
2662 cflags_filter=echo
2663 ldflags_filter=echo
2664
2665 AS_C='-c'
2666 AS_O='-o $@'
2667 CC_C='-c'
2668 CC_E='-E -o $@'
2669 CC_O='-o $@'
2670 CXX_C='-c'
2671 CXX_O='-o $@'
2672 LD_O='-o $@'
2673 LD_LIB='-l%'
2674 LD_PATH='-L'
2675 HOSTCC_C='-c'
2676 HOSTCC_E='-E -o $@'
2677 HOSTCC_O='-o $@'
2678 HOSTLD_O='-o $@'
2679
2680 host_libs='-lm'
2681 host_cflags_filter=echo
2682 host_ldflags_filter=echo
2683
2684 target_path='$(CURDIR)'
2685
2686 # since the object filename is not given with the -MM flag, the compiler
2687 # is only able to print the basename, and we must add the path ourselves
2688 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2689 DEPFLAGS='-MM'
2690
2691 # find source path
2692 if test -f configure; then
2693     source_path=.
2694 else
2695     source_path=$(cd $(dirname "$0"); pwd)
2696     echo "$source_path" | grep -q '[[:blank:]]' &&
2697         die "Out of tree builds are impossible with whitespace in source path."
2698     test -e "$source_path/config.h" &&
2699         die "Out of tree builds are impossible with config.h in source dir."
2700 fi
2701
2702 for v in "$@"; do
2703     r=${v#*=}
2704     l=${v%"$r"}
2705     r=$(sh_quote "$r")
2706     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2707 done
2708
2709 find_things(){
2710     thing=$1
2711     pattern=$2
2712     file=$source_path/$3
2713     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2714 }
2715
2716 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2717 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2718 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2719 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2720 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2721 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2722 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2723 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2724 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2725 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2726 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2727
2728 ALL_COMPONENTS="
2729     $BSF_LIST
2730     $DECODER_LIST
2731     $DEMUXER_LIST
2732     $ENCODER_LIST
2733     $FILTER_LIST
2734     $HWACCEL_LIST
2735     $INDEV_LIST
2736     $MUXER_LIST
2737     $OUTDEV_LIST
2738     $PARSER_LIST
2739     $PROTOCOL_LIST
2740 "
2741
2742 for n in $COMPONENT_LIST; do
2743     v=$(toupper ${n%s})_LIST
2744     eval enable \$$v
2745     eval ${n}_if_any="\$$v"
2746 done
2747
2748 enable $ARCH_EXT_LIST
2749
2750 die_unknown(){
2751     echo "Unknown option \"$1\"."
2752     echo "See $0 --help for available options."
2753     exit 1
2754 }
2755
2756 print_3_columns() {
2757     cat | tr ' ' '\n' | sort | pr -r -3 -t
2758 }
2759
2760 show_list() {
2761     suffix=_$1
2762     shift
2763     echo $* | sed s/$suffix//g | print_3_columns
2764     exit 0
2765 }
2766
2767 rand_list(){
2768     IFS=', '
2769     set -- $*
2770     unset IFS
2771     for thing; do
2772         comp=${thing%:*}
2773         prob=${thing#$comp}
2774         prob=${prob#:}
2775         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2776         echo "prob ${prob:-0.5}"
2777         printf '%s\n' $comp
2778     done
2779 }
2780
2781 do_random(){
2782     action=$1
2783     shift
2784     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2785     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2786 }
2787
2788 for opt do
2789     optval="${opt#*=}"
2790     case "$opt" in
2791         --extra-ldflags=*)
2792             add_ldflags $optval
2793         ;;
2794         --extra-libs=*)
2795             add_extralibs $optval
2796         ;;
2797         --disable-devices)
2798             disable $INDEV_LIST $OUTDEV_LIST
2799         ;;
2800         --enable-debug=*)
2801             debuglevel="$optval"
2802         ;;
2803         --disable-programs)
2804             disable $PROGRAM_LIST
2805         ;;
2806         --disable-everything)
2807             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2808         ;;
2809         --disable-all)
2810             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2811             disable $LIBRARY_LIST $PROGRAM_LIST doc
2812         ;;
2813         --enable-random|--disable-random)
2814             action=${opt%%-random}
2815             do_random ${action#--} $COMPONENT_LIST
2816         ;;
2817         --enable-random=*|--disable-random=*)
2818             action=${opt%%-random=*}
2819             do_random ${action#--} $optval
2820         ;;
2821         --enable-*=*|--disable-*=*)
2822             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2823             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2824             eval list=\$$(toupper $thing)_LIST
2825             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2826             list=$(filter "$name" $list)
2827             [ "$list" = "" ] && warn "Option $opt did not match anything"
2828             $action $list
2829         ;;
2830         --enable-?*|--disable-?*)
2831             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2832             if is_in $option $COMPONENT_LIST; then
2833                 test $action = disable && action=unset
2834                 eval $action \$$(toupper ${option%s})_LIST
2835             elif is_in $option $CMDLINE_SELECT; then
2836                 $action $option
2837             else
2838                 die_unknown $opt
2839             fi
2840         ;;
2841         --list-*)
2842             NAME="${opt#--list-}"
2843             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2844             NAME=${NAME%s}
2845             eval show_list $NAME \$$(toupper $NAME)_LIST
2846         ;;
2847         --help|-h) show_help
2848         ;;
2849         --fatal-warnings) enable fatal_warnings
2850         ;;
2851         *)
2852             optname="${opt%%=*}"
2853             optname="${optname#--}"
2854             optname=$(echo "$optname" | sed 's/-/_/g')
2855             if is_in $optname $CMDLINE_SET; then
2856                 eval $optname='$optval'
2857             elif is_in $optname $CMDLINE_APPEND; then
2858                 append $optname "$optval"
2859             else
2860                 die_unknown $opt
2861             fi
2862         ;;
2863     esac
2864 done
2865
2866 disabled logging && logfile=/dev/null
2867
2868 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2869 set >> $logfile
2870
2871 test -n "$cross_prefix" && enable cross_compile
2872
2873 if enabled cross_compile; then
2874     test -n "$arch" && test -n "$target_os" ||
2875         die "Must specify target arch and OS when cross-compiling"
2876 fi
2877
2878 ar_default="${cross_prefix}${ar_default}"
2879 cc_default="${cross_prefix}${cc_default}"
2880 cxx_default="${cross_prefix}${cxx_default}"
2881 nm_default="${cross_prefix}${nm_default}"
2882 pkg_config_default="${cross_prefix}${pkg_config_default}"
2883 ranlib_default="${cross_prefix}${ranlib_default}"
2884 strip_default="${cross_prefix}${strip_default}"
2885 windres_default="${cross_prefix}${windres_default}"
2886
2887 sysinclude_default="${sysroot}/usr/include"
2888
2889 test -n "$valgrind" && toolchain="valgrind-memcheck"
2890
2891 case "$toolchain" in
2892     clang-asan)
2893         cc_default="clang"
2894         add_cflags  -fsanitize=address
2895         add_ldflags -fsanitize=address
2896     ;;
2897     clang-tsan)
2898         cc_default="clang"
2899         add_cflags  -fsanitize=thread -pie
2900         add_ldflags -fsanitize=thread -pie
2901     ;;
2902     clang-usan)
2903         cc_default="clang"
2904         add_cflags  -fsanitize=undefined
2905         add_ldflags -fsanitize=undefined
2906     ;;
2907     gcc-asan)
2908         cc_default="gcc"
2909         add_cflags  -fsanitize=address
2910         add_ldflags -fsanitize=address
2911     ;;
2912     gcc-tsan)
2913         cc_default="gcc"
2914         add_cflags  -fsanitize=thread -pie -fPIC
2915         add_ldflags -fsanitize=thread -pie -fPIC
2916     ;;
2917     gcc-usan)
2918         cc_default="gcc"
2919         add_cflags  -fsanitize=undefined
2920         add_ldflags -fsanitize=undefined
2921     ;;
2922     valgrind-massif)
2923         target_exec_default=${valgrind:-"valgrind"}
2924         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"
2925     ;;
2926     valgrind-memcheck)
2927         target_exec_default=${valgrind:-"valgrind"}
2928         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2929     ;;
2930     msvc)
2931         # Check whether the current MSVC version needs the C99 converter.
2932         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2933         # support enough of C99 to build ffmpeg. Default to the new
2934         # behaviour if the regexp was unable to match anything, since this
2935         # successfully parses the version number of existing supported
2936         # versions that require the converter (MSVC 2010 and 2012).
2937         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2938         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2939             cc_default="cl"
2940         else
2941             cc_default="c99wrap cl"
2942         fi
2943         ld_default="link"
2944         nm_default="dumpbin -symbols"
2945         ar_default="lib"
2946         target_os_default="win32"
2947         # Use a relative path for TMPDIR. This makes sure all the
2948         # ffconf temp files are written with a relative path, avoiding
2949         # issues with msys/win32 path conversion for MSVC parameters
2950         # such as -Fo<file> or -out:<file>.
2951         TMPDIR=.
2952     ;;
2953     icl)
2954         cc_default="icl"
2955         ld_default="xilink"
2956         nm_default="dumpbin -symbols"
2957         ar_default="xilib"
2958         target_os_default="win32"
2959         TMPDIR=.
2960     ;;
2961     gcov)
2962         add_cflags  -fprofile-arcs -ftest-coverage
2963         add_ldflags -fprofile-arcs -ftest-coverage
2964     ;;
2965     hardened)
2966         add_cflags  -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2967         add_ldflags -Wl,-z,relro -Wl,-z,now
2968     ;;
2969     ?*)
2970         die "Unknown toolchain $toolchain"
2971     ;;
2972 esac
2973
2974 set_default arch cc cxx pkg_config ranlib strip sysinclude target_exec target_os yasmexe
2975 enabled cross_compile || host_cc_default=$cc
2976 set_default host_cc
2977
2978 if ! $pkg_config --version >/dev/null 2>&1; then
2979     warn "$pkg_config not found, library detection may fail."
2980     pkg_config=false
2981 fi
2982
2983 exesuf() {
2984     case $1 in
2985         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2986     esac
2987 }
2988
2989 EXESUF=$(exesuf $target_os)
2990 HOSTEXESUF=$(exesuf $host_os)
2991
2992 # set temporary file name
2993 : ${TMPDIR:=$TEMPDIR}
2994 : ${TMPDIR:=$TMP}
2995 : ${TMPDIR:=/tmp}
2996
2997 if [ -n "$tempprefix" ] ; then
2998     mktemp(){
2999         echo $tempprefix.${HOSTNAME}.${UID}
3000     }
3001 elif ! check_cmd mktemp -u XXXXXX; then
3002     # simple replacement for missing mktemp
3003     # NOT SAFE FOR GENERAL USE
3004     mktemp(){
3005         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
3006     }
3007 fi
3008
3009 tmpfile(){
3010     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
3011         (set -C; exec > $tmp) 2>/dev/null ||
3012         die "Unable to create temporary file in $TMPDIR."
3013     append TMPFILES $tmp
3014     eval $1=$tmp
3015 }
3016
3017 trap 'rm -f -- $TMPFILES' EXIT
3018
3019 tmpfile TMPASM .asm
3020 tmpfile TMPC   .c
3021 tmpfile TMPCPP .cpp
3022 tmpfile TMPE   $EXESUF
3023 tmpfile TMPH   .h
3024 tmpfile TMPM   .m
3025 tmpfile TMPO   .o
3026 tmpfile TMPS   .S
3027 tmpfile TMPSH  .sh
3028 tmpfile TMPV   .ver
3029
3030 unset -f mktemp
3031
3032 chmod +x $TMPE
3033
3034 # make sure we can execute files in $TMPDIR
3035 cat > $TMPSH 2>> $logfile <<EOF
3036 #! /bin/sh
3037 EOF
3038 chmod +x $TMPSH >> $logfile 2>&1
3039 if ! $TMPSH >> $logfile 2>&1; then
3040     cat <<EOF
3041 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
3042 variable to another directory and make sure that it is not mounted noexec.
3043 EOF
3044     die "Sanity test failed."
3045 fi
3046
3047 ccc_flags(){
3048     for flag; do
3049         case $flag in
3050             -std=c99)           echo -c99                       ;;
3051             -mcpu=*)            echo -arch ${flag#*=}           ;;
3052             -mieee)             echo -ieee                      ;;
3053             -O*|-fast)          echo $flag                      ;;
3054             -fno-math-errno)    echo -assume nomath_errno       ;;
3055             -g)                 echo -g3                        ;;
3056             -Wall)              echo -msg_enable level2         ;;
3057             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
3058             -Wl,*)              echo $flag                      ;;
3059             -f*|-W*)                                            ;;
3060             *)                  echo $flag                      ;;
3061         esac
3062    done
3063 }
3064
3065 cparser_flags(){
3066     for flag; do
3067         case $flag in
3068             -Wno-switch)             echo -Wno-switch-enum ;;
3069             -Wno-format-zero-length) ;;
3070             -Wdisabled-optimization) ;;
3071             -Wno-pointer-sign)       echo -Wno-other ;;
3072             *)                       echo $flag ;;
3073         esac
3074     done
3075 }
3076
3077 msvc_common_flags(){
3078     for flag; do
3079         case $flag in
3080             # In addition to specifying certain flags under the compiler
3081             # specific filters, they must be specified here as well or else the
3082             # generic catch all at the bottom will print the original flag.
3083             -Wall)                ;;
3084             -std=c99)             ;;
3085             # Common flags
3086             -fomit-frame-pointer) ;;
3087             -g)                   echo -Z7 ;;
3088             -fno-math-errno)      ;;
3089             -fno-common)          ;;
3090             -fno-signed-zeros)    ;;
3091             -fPIC)                ;;
3092             -mthumb)              ;;
3093             -march=*)             ;;
3094             -lz)                  echo zlib.lib ;;
3095             -lavifil32)           echo vfw32.lib ;;
3096             -lavicap32)           echo vfw32.lib user32.lib ;;
3097             -l*)                  echo ${flag#-l}.lib ;;
3098             *)                    echo $flag ;;
3099         esac
3100     done
3101 }
3102
3103 msvc_flags(){
3104     msvc_common_flags "$@"
3105     for flag; do
3106         case $flag in
3107             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
3108                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
3109                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
3110                                        -wd4554 \
3111                                        -wd4273 ;;
3112         esac
3113     done
3114 }
3115
3116 icl_flags(){
3117     msvc_common_flags "$@"
3118     for flag; do
3119         case $flag in
3120             # Despite what Intel's documentation says -Wall, which is supported
3121             # on Windows, does enable remarks so disable them here.
3122             -Wall)                echo $flag -Qdiag-disable:remark ;;
3123             -std=c99)             echo -Qstd=c99 ;;
3124         esac
3125     done
3126 }
3127
3128 icc_flags(){
3129     for flag; do
3130         case $flag in
3131             -flto)                echo -ipo ;;
3132             *)                    echo $flag ;;
3133         esac
3134     done
3135 }
3136
3137 pgi_flags(){
3138     for flag; do
3139         case $flag in
3140             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
3141             -fomit-frame-pointer) echo -Mnoframe ;;
3142             -g)                   echo -gopt ;;
3143             *)                    echo $flag ;;
3144         esac
3145     done
3146 }
3147
3148 suncc_flags(){
3149     for flag; do
3150         case $flag in
3151             -march=*|-mcpu=*)
3152                 case "${flag#*=}" in
3153                     native)                   echo -xtarget=native       ;;
3154                     v9|niagara)               echo -xarch=sparc          ;;
3155                     ultrasparc)               echo -xarch=sparcvis       ;;
3156                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
3157                     i586|pentium)             echo -xchip=pentium        ;;
3158                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
3159                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
3160                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
3161                     pentium4*)          echo -xtarget=pentium4           ;;
3162                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
3163                     *-sse3)             echo -xarch=sse3                 ;;
3164                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
3165                     bonnell)                   echo -xarch=ssse3         ;;
3166                     corei7|nehalem)            echo -xtarget=nehalem     ;;
3167                     westmere)                  echo -xtarget=westmere    ;;
3168                     silvermont)                echo -xarch=sse4_2        ;;
3169                     corei7-avx|sandybridge)    echo -xtarget=sandybridge ;;
3170                     core-avx*|ivybridge|haswell|broadwell)
3171                                                echo -xarch=avx           ;;
3172                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
3173                     btver1)                    echo -xarch=amdsse4a      ;;
3174                     btver2|bdver*)             echo -xarch=avx           ;;
3175                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
3176                     k8|opteron|athlon64|athlon-fx)
3177                                                echo -xarch=sse2a         ;;
3178                     athlon*)                   echo -xarch=pentium_proa  ;;
3179                 esac
3180                 ;;
3181             -std=c99)             echo -xc99              ;;
3182             -fomit-frame-pointer) echo -xregs=frameptr    ;;
3183             -fPIC)                echo -KPIC -xcode=pic32 ;;
3184             -W*,*)                echo $flag              ;;
3185             -f*-*|-W*|-mimpure-text)                      ;;
3186             -shared)              echo -G                 ;;
3187             *)                    echo $flag              ;;
3188         esac
3189     done
3190 }
3191
3192 tms470_flags(){
3193     for flag; do
3194         case $flag in
3195             -march=*|-mcpu=*)
3196                 case "${flag#*=}" in
3197                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
3198                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
3199                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
3200                     armv6*|arm11*)          echo -mv=6   ;;
3201                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3202                                             echo -mv=5e  ;;
3203                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3204                 esac
3205                 ;;
3206             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3207             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3208             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3209             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3210             -msoft-float)   echo --float_support=vfplib       ;;
3211             -O[0-3]|-mf=*)  echo $flag                        ;;
3212             -g)             echo -g -mn                       ;;
3213             -pds=*)         echo $flag                        ;;
3214             -D*|-I*)        echo $flag                        ;;
3215             --gcc|--abi=*)  echo $flag                        ;;
3216             -me)            echo $flag                        ;;
3217         esac
3218     done
3219 }
3220
3221 probe_cc(){
3222     pfx=$1
3223     _cc=$2
3224
3225     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3226     unset _ld_o _ldflags _ld_lib _ld_path
3227     unset _depflags _DEPCMD _DEPFLAGS
3228     _flags_filter=echo
3229
3230     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3231         true # no-op to avoid reading stdin in following checks
3232     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3233         _type=llvm_gcc
3234         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3235         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3236         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3237         _cflags_speed='-O3'
3238         _cflags_size='-Os'
3239     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3240         _type=gcc
3241         gcc_version=$($_cc --version | head -n1)
3242         gcc_basever=$($_cc -dumpversion)
3243         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3244         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3245         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3246         if ! $_cc -dumpversion | grep -q '^2\.'; then
3247             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3248         fi
3249         _cflags_speed='-O3'
3250         _cflags_size='-Os'
3251     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3252         _type=icc
3253         _ident=$($_cc --version | head -n1)
3254         _depflags='-MMD'
3255         _cflags_speed='-O3'
3256         _cflags_size='-Os'
3257         _cflags_noopt='-O1'
3258         _flags_filter=icc_flags
3259     elif $_cc -v 2>&1 | grep -q xlc; then
3260         _type=xlc
3261         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3262         _cflags_speed='-O5'
3263         _cflags_size='-O5 -qcompact'
3264     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3265         _type=ccc
3266         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3267         _DEPFLAGS='-M'
3268         _cflags_speed='-fast'
3269         _cflags_size='-O1'
3270         _flags_filter=ccc_flags
3271     elif $_cc --vsn 2>/dev/null | grep -Eq "ARM (C/C\+\+ )?Compiler"; then
3272         test -d "$sysroot" || die "No valid sysroot specified."
3273         _type=armcc
3274         _ident=$($_cc --vsn | head -n1 | sed 's/.*: //')
3275         armcc_conf="$PWD/armcc.conf"
3276         $_cc --arm_linux_configure                 \
3277              --arm_linux_config_file="$armcc_conf" \
3278              --configure_sysroot="$sysroot"        \
3279              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3280              die "Error creating armcc configuration file."
3281         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3282         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3283         as_default="${cross_prefix}gcc"
3284         _depflags='-MMD'
3285         _cflags_speed='-O3'
3286         _cflags_size='-Os'
3287     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3288         _type=tms470
3289         _ident=$($_cc -version | head -n1 | tr -s ' ')
3290         _flags='--gcc --abi=eabi -me'
3291         _cc_e='-ppl -fe=$@'
3292         _cc_o='-fe=$@'
3293         _depflags='-ppa -ppd=$(@:.o=.d)'
3294         _cflags_speed='-O3 -mf=5'
3295         _cflags_size='-O3 -mf=2'
3296         _flags_filter=tms470_flags
3297     elif $_cc -v 2>&1 | grep -q clang; then
3298         _type=clang
3299         _ident=$($_cc --version | head -n1)
3300         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3301         _cflags_speed='-O3'
3302         _cflags_size='-Os'
3303     elif $_cc -V 2>&1 | grep -q Sun; then
3304         _type=suncc
3305         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3306         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3307         _DEPFLAGS='-xM1 -xc99'
3308         _ldflags='-std=c99'
3309         _cflags_speed='-O5'
3310         _cflags_size='-O5 -xspace'
3311         _flags_filter=suncc_flags
3312     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3313         _type=pathscale
3314         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3315         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3316         _cflags_speed='-O2'
3317         _cflags_size='-Os'
3318         _flags_filter='filter_out -Wdisabled-optimization'
3319     elif $_cc -v 2>&1 | grep -q Open64; then
3320         _type=open64
3321         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3322         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3323         _cflags_speed='-O2'
3324         _cflags_size='-Os'
3325         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3326     elif $_cc -V 2>&1 | grep -q Portland; then
3327         _type=pgi
3328         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3329         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3330         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3331         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3332         _cflags_noopt="-O"
3333         _flags_filter=pgi_flags
3334     elif $_cc 2>&1 | grep -q Microsoft; then
3335         _type=msvc
3336         _ident=$($cc 2>&1 | head -n1)
3337         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3338         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3339         _cflags_speed="-O2"
3340         _cflags_size="-O1"
3341         if $_cc 2>&1 | grep -q Linker; then
3342             _ld_o='-out:$@'
3343         else
3344             _ld_o='-Fe$@'
3345         fi
3346         _cc_o='-Fo$@'
3347         _cc_e='-P -Fi$@'
3348         _flags_filter=msvc_flags
3349         _ld_lib='lib%.a'
3350         _ld_path='-libpath:'
3351         _flags='-nologo'
3352         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3353         if [ $pfx = hostcc ]; then
3354             append _cflags -Dsnprintf=_snprintf
3355         fi
3356         disable stripping
3357     elif $_cc 2>&1 | grep -q Intel; then
3358         _type=icl
3359         _ident=$($cc 2>&1 | head -n1)
3360         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3361         # Not only is O3 broken on 13.x+ but it is slower on all previous
3362         # versions (tested) as well.
3363         _cflags_speed="-O2"
3364         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3365         if $_cc 2>&1 | grep -q Linker; then
3366             _ld_o='-out:$@'
3367         else
3368             _ld_o='-Fe$@'
3369         fi
3370         _cc_o='-Fo$@'
3371         _cc_e='-P'
3372         _flags_filter=icl_flags
3373         _ld_lib='lib%.a'
3374         _ld_path='-libpath:'
3375         # -Qdiag-error to make icl error when seeing certain unknown arguments
3376         _flags='-nologo -Qdiag-error:4044,10157'
3377         # -Qvec- -Qsimd- to prevent miscompilation, -GS, fp:precise for consistency
3378         # with MSVC which enables it by default.
3379         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS -fp:precise'
3380         if [ $pfx = hostcc ]; then
3381             append _cflags -Dsnprintf=_snprintf
3382         fi
3383     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3384         _type=cparser
3385         _ident=$($_cc --version | head -n1)
3386         _depflags='-MMD'
3387         _cflags_speed='-O4'
3388         _cflags_size='-O2'
3389         _flags_filter=cparser_flags
3390     fi
3391
3392     eval ${pfx}_type=\$_type
3393     eval ${pfx}_ident=\$_ident
3394 }
3395
3396 set_ccvars(){
3397     eval ${1}_C=\${_cc_c-\${${1}_C}}
3398     eval ${1}_E=\${_cc_e-\${${1}_E}}
3399     eval ${1}_O=\${_cc_o-\${${1}_O}}
3400
3401     if [ -n "$_depflags" ]; then
3402         eval ${1}_DEPFLAGS=\$_depflags
3403     else
3404         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3405         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3406         eval DEP${1}FLAGS=\$_flags
3407     fi
3408 }
3409
3410 probe_cc cc "$cc"
3411 cflags_filter=$_flags_filter
3412 cflags_speed=$_cflags_speed
3413 cflags_size=$_cflags_size
3414 cflags_noopt=$_cflags_noopt
3415 add_cflags $_flags $_cflags
3416 cc_ldflags=$_ldflags
3417 set_ccvars CC
3418
3419 probe_cc hostcc "$host_cc"
3420 host_cflags_filter=$_flags_filter
3421 add_host_cflags  $_flags $_cflags
3422 set_ccvars HOSTCC
3423
3424 test -n "$cc_type" && enable $cc_type ||
3425     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3426
3427 : ${as_default:=$cc}
3428 : ${dep_cc_default:=$cc}
3429 : ${ld_default:=$cc}
3430 : ${host_ld_default:=$host_cc}
3431 set_default ar as dep_cc ld host_ld windres
3432
3433 probe_cc as "$as"
3434 asflags_filter=$_flags_filter
3435 add_asflags $_flags $_cflags
3436 set_ccvars AS
3437
3438 probe_cc ld "$ld"
3439 ldflags_filter=$_flags_filter
3440 add_ldflags $_flags $_ldflags
3441 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3442 LD_O=${_ld_o-$LD_O}
3443 LD_LIB=${_ld_lib-$LD_LIB}
3444 LD_PATH=${_ld_path-$LD_PATH}
3445
3446 probe_cc hostld "$host_ld"
3447 host_ldflags_filter=$_flags_filter
3448 add_host_ldflags $_flags $_ldflags
3449 HOSTLD_O=${_ld_o-$HOSTLD_O}
3450
3451 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3452     probe_cc depcc "$dep_cc"
3453     CCDEP=${_DEPCMD:-$DEPCMD}
3454     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3455     DEPCCFLAGS=$_flags
3456 fi
3457
3458 if $ar 2>&1 | grep -q Microsoft; then
3459     arflags="-nologo"
3460     ar_o='-out:$@'
3461 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3462     arflags="rq"
3463     ar_o='$@'
3464 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3465     arflags='-Xany -r -c'
3466     ar_o='$@'
3467 else
3468     arflags="rc"
3469     ar_o='$@'
3470 fi
3471
3472 add_cflags $extra_cflags
3473 add_cxxflags $extra_cxxflags
3474 add_asflags $extra_cflags
3475
3476 if test -n "$sysroot"; then
3477     case "$cc_type" in
3478         gcc|llvm_gcc|clang)
3479             add_cppflags --sysroot="$sysroot"
3480             add_ldflags --sysroot="$sysroot"
3481 # On Darwin --sysroot may be ignored, -isysroot always affects headers and linking
3482             add_cppflags -isysroot "$sysroot"
3483             add_ldflags -isysroot "$sysroot"
3484         ;;
3485         tms470)
3486             add_cppflags -I"$sysinclude"
3487             add_ldflags  --sysroot="$sysroot"
3488         ;;
3489     esac
3490 fi
3491
3492 if test "$cpu" = host; then
3493     enabled cross_compile &&
3494         die "--cpu=host makes no sense when cross-compiling."
3495
3496     case "$cc_type" in
3497         gcc|llvm_gcc)
3498             check_native(){
3499                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3500                 sed -n "/cc1.*$1=/{
3501                             s/.*$1=\\([^ ]*\\).*/\\1/
3502                             p
3503                             q
3504                         }" $TMPE
3505             }
3506             cpu=$(check_native -march || check_native -mcpu)
3507         ;;
3508     esac
3509
3510     test "${cpu:-host}" = host &&
3511         die "--cpu=host not supported with compiler $cc"
3512 fi
3513
3514 # Deal with common $arch aliases
3515 case "$arch" in
3516     aarch64|arm64)
3517         arch="aarch64"
3518     ;;
3519     arm*|iPad*|iPhone*)
3520         arch="arm"
3521     ;;
3522     mips*|IP*)
3523         arch="mips"
3524     ;;
3525     parisc*|hppa*)
3526         arch="parisc"
3527     ;;
3528     "Power Macintosh"|ppc*|powerpc*)
3529         arch="ppc"
3530     ;;
3531     s390|s390x)
3532         arch="s390"
3533     ;;
3534     sh4|sh)
3535         arch="sh4"
3536     ;;
3537     sun4u|sparc*)
3538         arch="sparc"
3539     ;;
3540     tilegx|tile-gx)
3541         arch="tilegx"
3542     ;;
3543     i[3-6]86*|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3544         arch="x86"
3545     ;;
3546 esac
3547
3548 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3549 enable $arch
3550
3551 # Add processor-specific flags
3552 if enabled aarch64; then
3553
3554     case $cpu in
3555         armv*)
3556             cpuflags="-march=$cpu"
3557         ;;
3558         *)
3559             cpuflags="-mcpu=$cpu"
3560         ;;
3561     esac
3562
3563 elif enabled alpha; then
3564
3565     cpuflags="-mcpu=$cpu"
3566
3567 elif enabled arm; then
3568
3569     check_arm_arch() {
3570         check_cpp_condition stddef.h \
3571             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3572             $cpuflags
3573     }
3574
3575     probe_arm_arch() {
3576         if   check_arm_arch 4;        then echo armv4;
3577         elif check_arm_arch 4T;       then echo armv4t;
3578         elif check_arm_arch 5;        then echo armv5;
3579         elif check_arm_arch 5E;       then echo armv5e;
3580         elif check_arm_arch 5T;       then echo armv5t;
3581         elif check_arm_arch 5TE;      then echo armv5te;
3582         elif check_arm_arch 5TEJ;     then echo armv5te;
3583         elif check_arm_arch 6;        then echo armv6;
3584         elif check_arm_arch 6J;       then echo armv6j;
3585         elif check_arm_arch 6K;       then echo armv6k;
3586         elif check_arm_arch 6Z;       then echo armv6z;
3587         elif check_arm_arch 6ZK;      then echo armv6zk;
3588         elif check_arm_arch 6T2;      then echo armv6t2;
3589         elif check_arm_arch 7;        then echo armv7;
3590         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3591         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3592         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3593         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3594         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3595         fi
3596     }
3597
3598     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3599
3600     case $cpu in
3601         armv*)
3602             cpuflags="-march=$cpu"
3603             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3604         ;;
3605         *)
3606             cpuflags="-mcpu=$cpu"
3607             case $cpu in
3608                 cortex-a*)                               subarch=armv7a  ;;
3609                 cortex-r*)                               subarch=armv7r  ;;
3610                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3611                 arm11*)                                  subarch=armv6   ;;
3612                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3613                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3614                 *)                             subarch=$(probe_arm_arch) ;;
3615             esac
3616         ;;
3617     esac
3618
3619     case "$subarch" in
3620         armv5t*)    enable fast_clz                ;;
3621         armv[6-8]*)
3622             enable fast_clz
3623             disabled fast_unaligned || enable fast_unaligned
3624             ;;
3625     esac
3626
3627 elif enabled avr32; then
3628
3629     case $cpu in
3630         ap7[02]0[0-2])
3631             subarch="avr32_ap"
3632             cpuflags="-mpart=$cpu"
3633         ;;
3634         ap)
3635             subarch="avr32_ap"
3636             cpuflags="-march=$cpu"
3637         ;;
3638         uc3[ab]*)
3639             subarch="avr32_uc"
3640             cpuflags="-mcpu=$cpu"
3641         ;;
3642         uc)
3643             subarch="avr32_uc"
3644             cpuflags="-march=$cpu"
3645         ;;
3646     esac
3647
3648 elif enabled bfin; then
3649
3650     cpuflags="-mcpu=$cpu"
3651
3652 elif enabled mips; then
3653
3654     cpuflags="-march=$cpu"
3655
3656     case $cpu in
3657         24kc)
3658             disable mipsfpu
3659             disable mipsdspr1
3660             disable mipsdspr2
3661         ;;
3662         24kf*)
3663             disable mipsdspr1
3664             disable mipsdspr2
3665         ;;
3666         24kec|34kc|1004kc)
3667             disable mipsfpu
3668             disable mipsdspr2
3669         ;;
3670         24kef*|34kf*|1004kf*)
3671             disable mipsdspr2
3672         ;;
3673         74kc)
3674             disable mipsfpu
3675         ;;
3676     esac
3677
3678 elif enabled ppc; then
3679
3680     disable ldbrx
3681
3682     case $(tolower $cpu) in
3683         601|ppc601|powerpc601)
3684             cpuflags="-mcpu=601"
3685             disable altivec
3686         ;;
3687         603*|ppc603*|powerpc603*)
3688             cpuflags="-mcpu=603"
3689             disable altivec
3690         ;;
3691         604*|ppc604*|powerpc604*)
3692             cpuflags="-mcpu=604"
3693             disable altivec
3694         ;;
3695         g3|75*|ppc75*|powerpc75*)
3696             cpuflags="-mcpu=750"
3697             disable altivec
3698         ;;
3699         g4|745*|ppc745*|powerpc745*)
3700             cpuflags="-mcpu=7450"
3701         ;;
3702         74*|ppc74*|powerpc74*)
3703             cpuflags="-mcpu=7400"
3704         ;;
3705         g5|970|ppc970|powerpc970)
3706             cpuflags="-mcpu=970"
3707         ;;
3708         power[3-7]*)
3709             cpuflags="-mcpu=$cpu"
3710         ;;
3711         cell)
3712             cpuflags="-mcpu=cell"
3713             enable ldbrx
3714         ;;
3715         e500mc)
3716             cpuflags="-mcpu=e500mc"
3717             disable altivec
3718         ;;
3719         e500v2)
3720             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3721             disable altivec
3722             disable dcbzl
3723         ;;
3724         e500)
3725             cpuflags="-mcpu=8540 -mhard-float"
3726             disable altivec
3727             disable dcbzl
3728         ;;
3729     esac
3730
3731 elif enabled sparc; then
3732
3733     case $cpu in
3734         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3735             cpuflags="-mcpu=$cpu"
3736         ;;
3737         ultrasparc*|niagara[234])
3738             cpuflags="-mcpu=$cpu"
3739         ;;
3740     esac
3741
3742 elif enabled x86; then
3743
3744     case $cpu in
3745         i[345]86|pentium)
3746             cpuflags="-march=$cpu"
3747             disable mmx
3748         ;;
3749         # targets that do NOT support nopl and conditional mov (cmov)
3750         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3751             cpuflags="-march=$cpu"
3752             disable i686
3753         ;;
3754         # targets that do support nopl and conditional mov (cmov)
3755         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx\
3756         |core*|atom|bonnell|nehalem|westmere|silvermont|sandybridge|ivybridge|haswell|broadwell|amdfam10|barcelona|b[dt]ver*)
3757             cpuflags="-march=$cpu"
3758             enable i686
3759             enable fast_cmov
3760         ;;
3761         # targets that do support conditional mov but on which it's slow
3762         pentium4|pentium4m|prescott|nocona)
3763             cpuflags="-march=$cpu"
3764             enable i686
3765             disable fast_cmov
3766         ;;
3767     esac
3768
3769 fi
3770
3771 if [ "$cpu" != generic ]; then
3772     add_cflags  $cpuflags
3773     add_asflags $cpuflags
3774 fi
3775
3776 # compiler sanity check
3777 check_exec <<EOF
3778 int main(void){ return 0; }
3779 EOF
3780 if test "$?" != 0; then
3781     echo "$cc is unable to create an executable file."
3782     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3783         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3784         echo "Only do this if you know what cross compiling means."
3785     fi
3786     die "C compiler test failed."
3787 fi
3788
3789 add_cppflags -D_ISOC99_SOURCE
3790 add_cxxflags -D__STDC_CONSTANT_MACROS
3791 check_cflags -std=c99
3792 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3793 #include <stdlib.h>
3794 EOF
3795 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3796 #include <stdlib.h>
3797 EOF
3798
3799 add_host_cppflags -D_ISOC99_SOURCE
3800 check_host_cflags -std=c99
3801 check_host_cflags -Wall
3802 check_host_cflags -O3
3803
3804 check_64bit(){
3805     arch32=$1
3806     arch64=$2
3807     expr=$3
3808     check_code cc "" "int test[2*($expr) - 1]" &&
3809         subarch=$arch64 || subarch=$arch32
3810 }
3811
3812 case "$arch" in
3813     aarch64|alpha|ia64)
3814         spic=$shared
3815     ;;
3816     mips)
3817         check_64bit mips mips64 '_MIPS_SIM > 1'
3818         spic=$shared
3819     ;;
3820     parisc)
3821         check_64bit parisc parisc64 'sizeof(void *) > 4'
3822         spic=$shared
3823     ;;
3824     ppc)
3825         check_64bit ppc ppc64 'sizeof(void *) > 4'
3826         spic=$shared
3827     ;;
3828     s390)
3829         check_64bit s390 s390x 'sizeof(void *) > 4'
3830         spic=$shared
3831     ;;
3832     sparc)
3833         check_64bit sparc sparc64 'sizeof(void *) > 4'
3834         spic=$shared
3835     ;;
3836     x86)
3837         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3838         if test "$subarch" = "x86_64"; then
3839             spic=$shared
3840         fi
3841     ;;
3842     ppc)
3843         check_cc <<EOF && subarch="ppc64"
3844         int test[(int)sizeof(char*) - 7];
3845 EOF
3846     ;;
3847 esac
3848
3849 enable $subarch
3850 enabled spic && enable_weak pic
3851
3852 # OS specific
3853 case $target_os in
3854     aix)
3855         SHFLAGS=-shared
3856         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3857         enabled shared && add_ldflags -Wl,-brtl
3858         ;;
3859     haiku)
3860         prefix_default="/boot/common"
3861         network_extralibs="-lnetwork"
3862         host_libs=
3863         ;;
3864     sunos)
3865         SHFLAGS='-shared -Wl,-h,$$(@F)'
3866         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3867         network_extralibs="-lsocket -lnsl"
3868         # When using suncc to build, the Solaris linker will mark
3869         # an executable with each instruction set encountered by
3870         # the Solaris assembler.  As our libraries contain their own
3871         # guards for processor-specific code, instead suppress
3872         # generation of the HWCAPS ELF section on Solaris x86 only.
3873         enabled_all suncc x86 &&
3874             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3875             add_ldflags -Wl,-M,mapfile
3876         nm_default='nm -P -g'
3877         ;;
3878     netbsd)
3879         disable symver
3880         oss_indev_extralibs="-lossaudio"
3881         oss_outdev_extralibs="-lossaudio"
3882         enabled gcc || check_ldflags -Wl,-zmuldefs
3883         ;;
3884     openbsd|bitrig)
3885         disable symver
3886         SHFLAGS='-shared'
3887         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3888         SLIB_INSTALL_LINKS=
3889         oss_indev_extralibs="-lossaudio"
3890         oss_outdev_extralibs="-lossaudio"
3891         ;;
3892     dragonfly)
3893         disable symver
3894         ;;
3895     freebsd)
3896         ;;
3897     bsd/os)
3898         add_extralibs -lpoll -lgnugetopt
3899         strip="strip -d"
3900         ;;
3901     darwin)
3902         test "${as#*gas-preprocessor.pl}" != "$as" || gas="${gas:=gas-preprocessor.pl} ${as:=$cc}"
3903         enabled ppc && add_asflags -force_cpusubtype_ALL
3904         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3905         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3906         strip="${strip} -x"
3907         add_ldflags -Wl,-dynamic,-search_paths_first
3908         SLIBSUF=".dylib"
3909         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3910         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3911         objformat="macho"
3912         enabled x86_64 && objformat="macho64"
3913         enabled_any pic shared ||
3914             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3915         ;;
3916     mingw32*)
3917         if test $target_os = "mingw32ce"; then
3918             disable network
3919         else
3920             target_os=mingw32
3921         fi
3922         LIBTARGET=i386
3923         if enabled x86_64; then
3924             LIBTARGET="i386:x86-64"
3925         elif enabled arm; then
3926             LIBTARGET=arm-wince
3927         fi
3928         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3929         check_ldflags -Wl,--nxcompat
3930         check_ldflags -Wl,--dynamicbase
3931         shlibdir_default="$bindir_default"
3932         SLIBPREF=""
3933         SLIBSUF=".dll"
3934         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3935         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3936         dlltool="${cross_prefix}dlltool"
3937         if check_cmd lib.exe -list; then
3938             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3939             if enabled x86_64; then
3940                 LIBTARGET=x64
3941             fi
3942         elif check_cmd $dlltool --version; then
3943             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3944         fi
3945         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3946         SLIB_INSTALL_LINKS=
3947         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3948         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3949         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3950         objformat="win32"
3951         ranlib=:
3952         enable dos_paths
3953         ;;
3954     win32|win64)
3955         disable symver
3956         if enabled shared; then
3957             # Link to the import library instead of the normal static library
3958             # for shared libs.
3959             LD_LIB='%.lib'
3960             # Cannot build both shared and static libs with MSVC or icl.
3961             disable static
3962         fi
3963         shlibdir_default="$bindir_default"
3964         SLIBPREF=""
3965         SLIBSUF=".dll"
3966         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3967         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3968         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3969         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3970         SLIB_INSTALL_LINKS=
3971         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3972         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3973         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3974         objformat="win32"
3975         ranlib=:
3976         enable dos_paths
3977         ;;
3978     cygwin*)
3979         target_os=cygwin
3980         shlibdir_default="$bindir_default"
3981         SLIBPREF="cyg"
3982         SLIBSUF=".dll"
3983         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3984         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3985         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3986         SLIB_INSTALL_LINKS=
3987         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3988         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3989         objformat="win32"
3990         enable dos_paths
3991         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3992         ;;
3993     *-dos|freedos|opendos)
3994         network_extralibs="-lsocket"
3995         objformat="coff"
3996         enable dos_paths
3997         add_cppflags -U__STRICT_ANSI__
3998         ;;
3999     linux)
4000         enable dv1394
4001         ;;
4002     irix*)
4003         target_os=irix
4004         ranlib="echo ignoring ranlib"
4005         ;;
4006     os/2*)
4007         strip="lxlite -CS"
4008         ln_s="cp -f"
4009         objformat="aout"
4010         add_cppflags -D_GNU_SOURCE
4011         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
4012         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
4013         LIBSUF="_s.a"
4014         SLIBPREF=""
4015         SLIBSUF=".dll"
4016         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
4017         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
4018         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
4019             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
4020             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
4021             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
4022             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
4023             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
4024         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
4025             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
4026         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
4027         enable dos_paths
4028         enable_weak os2threads
4029         ;;
4030     gnu/kfreebsd)
4031         add_cppflags -D_BSD_SOURCE
4032         ;;
4033     gnu)
4034         ;;
4035     qnx)
4036         add_cppflags -D_QNX_SOURCE
4037         network_extralibs="-lsocket"
4038         ;;
4039     symbian)
4040         SLIBSUF=".dll"
4041         enable dos_paths
4042         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
4043         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
4044         add_ldflags -Wl,--target1-abs,--no-undefined \
4045                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
4046                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
4047         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
4048                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
4049                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
4050         ;;
4051     osf1)
4052         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
4053         ;;
4054     minix)
4055         ;;
4056     plan9)
4