lavfi/ebur128: fix typo: s/negociation/negotiation
[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   --libdir=DIR             install libs in DIR [PREFIX/lib]
86   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
87   --incdir=DIR             install includes in DIR [PREFIX/include]
88   --mandir=DIR             install man page in DIR [PREFIX/share/man]
89
90 Licensing options:
91   --enable-gpl             allow use of GPL code, the resulting libs
92                            and binaries will be under GPL [no]
93   --enable-version3        upgrade (L)GPL to version 3 [no]
94   --enable-nonfree         allow use of nonfree code, the resulting libs
95                            and binaries will be unredistributable [no]
96
97 Configuration options:
98   --disable-static         do not build static libraries [no]
99   --enable-shared          build shared libraries [no]
100   --enable-small           optimize for size instead of speed
101   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
102   --enable-gray            enable full grayscale support (slower color)
103   --disable-swscale-alpha  disable alpha channel support in swscale
104   --disable-all            disable building components, libraries and programs
105   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
106   --enable-incompatible-fork-abi  enable incompatible Libav fork ABI (deprecated) [no]
107
108 Program options:
109   --disable-programs       do not build command line programs
110   --disable-ffmpeg         disable ffmpeg build
111   --disable-ffplay         disable ffplay build
112   --disable-ffprobe        disable ffprobe build
113   --disable-ffserver       disable ffserver build
114
115 Documentation options:
116   --disable-doc            do not build documentation
117   --disable-htmlpages      do not build HTML documentation pages
118   --disable-manpages       do not build man documentation pages
119   --disable-podpages       do not build POD documentation pages
120   --disable-txtpages       do not build text documentation pages
121
122 Component options:
123   --disable-avdevice       disable libavdevice build
124   --disable-avcodec        disable libavcodec build
125   --disable-avformat       disable libavformat build
126   --disable-avutil         disable libavutil build
127   --disable-swresample     disable libswresample build
128   --disable-swscale        disable libswscale build
129   --disable-postproc       disable libpostproc build
130   --disable-avfilter       disable libavfilter build
131   --enable-avresample      enable libavresample build [no]
132   --disable-pthreads       disable pthreads [auto]
133   --disable-w32threads     disable Win32 threads [auto]
134   --disable-os2threads     disable OS/2 threads [auto]
135   --disable-network        disable network support [no]
136   --disable-dct            disable DCT code
137   --disable-dwt            disable DWT code
138   --disable-error-resilience disable error resilience code
139   --disable-lsp            disable LSP code
140   --disable-lzo            disable LZO decoder code
141   --disable-mdct           disable MDCT code
142   --disable-rdft           disable RDFT code
143   --disable-fft            disable FFT code
144
145 Hardware accelerators:
146   --disable-dxva2          disable DXVA2 code [autodetect]
147   --disable-vaapi          disable VAAPI code [autodetect]
148   --enable-vda             enable VDA code
149   --disable-vdpau          disable VDPAU code [autodetect]
150
151 Individual component options:
152   --disable-everything     disable all components listed below
153   --disable-encoder=NAME   disable encoder NAME
154   --enable-encoder=NAME    enable encoder NAME
155   --disable-encoders       disable all encoders
156   --disable-decoder=NAME   disable decoder NAME
157   --enable-decoder=NAME    enable decoder NAME
158   --disable-decoders       disable all decoders
159   --disable-hwaccel=NAME   disable hwaccel NAME
160   --enable-hwaccel=NAME    enable hwaccel NAME
161   --disable-hwaccels       disable all hwaccels
162   --disable-muxer=NAME     disable muxer NAME
163   --enable-muxer=NAME      enable muxer NAME
164   --disable-muxers         disable all muxers
165   --disable-demuxer=NAME   disable demuxer NAME
166   --enable-demuxer=NAME    enable demuxer NAME
167   --disable-demuxers       disable all demuxers
168   --enable-parser=NAME     enable parser NAME
169   --disable-parser=NAME    disable parser NAME
170   --disable-parsers        disable all parsers
171   --enable-bsf=NAME        enable bitstream filter NAME
172   --disable-bsf=NAME       disable bitstream filter NAME
173   --disable-bsfs           disable all bitstream filters
174   --enable-protocol=NAME   enable protocol NAME
175   --disable-protocol=NAME  disable protocol NAME
176   --disable-protocols      disable all protocols
177   --enable-indev=NAME      enable input device NAME
178   --disable-indev=NAME     disable input device NAME
179   --disable-indevs         disable input devices
180   --enable-outdev=NAME     enable output device NAME
181   --disable-outdev=NAME    disable output device NAME
182   --disable-outdevs        disable output devices
183   --disable-devices        disable all devices
184   --enable-filter=NAME     enable filter NAME
185   --disable-filter=NAME    disable filter NAME
186   --disable-filters        disable all filters
187
188 External library support:
189   --enable-avisynth        enable reading of AviSynth script files [no]
190   --disable-bzlib          disable bzlib [autodetect]
191   --enable-fontconfig      enable fontconfig
192   --enable-frei0r          enable frei0r video filtering
193   --enable-gnutls          enable gnutls [no]
194   --disable-iconv          disable iconv [autodetect]
195   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
196   --enable-libass          enable libass subtitles rendering [no]
197   --enable-libbluray       enable BluRay reading using libbluray [no]
198   --enable-libcaca         enable textual display using libcaca
199   --enable-libcelt         enable CELT decoding via libcelt [no]
200   --enable-libcdio         enable audio CD grabbing with libcdio
201   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
202                            and libraw1394 [no]
203   --enable-libfaac         enable AAC encoding via libfaac [no]
204   --enable-libfdk-aac      enable AAC encoding via libfdk-aac [no]
205   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
206   --enable-libfreetype     enable libfreetype [no]
207   --enable-libgme          enable Game Music Emu via libgme [no]
208   --enable-libgsm          enable GSM de/encoding via libgsm [no]
209   --enable-libiec61883     enable iec61883 via libiec61883 [no]
210   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
211   --enable-libmodplug      enable ModPlug via libmodplug [no]
212   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
213   --enable-libnut          enable NUT (de)muxing via libnut,
214                            native (de)muxer exists [no]
215   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
216   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
217   --enable-libopencv       enable video filtering via libopencv [no]
218   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
219   --enable-libopus         enable Opus decoding via libopus [no]
220   --enable-libpulse        enable Pulseaudio input via libpulse [no]
221   --enable-libquvi         enable quvi input via libquvi [no]
222   --enable-librtmp         enable RTMP[E] support via librtmp [no]
223   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
224   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
225   --enable-libsoxr         enable Include libsoxr resampling [no]
226   --enable-libspeex        enable Speex de/encoding via libspeex [no]
227   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
228   --enable-libtheora       enable Theora encoding via libtheora [no]
229   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
230   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
231   --enable-libv4l2         enable libv4l2/v4l-utils [no]
232   --enable-libvidstab      enable video stabilization using vid.stab [no]
233   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
234   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
235   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
236                            native implementation exists [no]
237   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
238   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
239   --enable-libx264         enable H.264 encoding via x264 [no]
240   --enable-libxavs         enable AVS encoding via xavs [no]
241   --enable-libxvid         enable Xvid encoding via xvidcore,
242                            native MPEG-4/Xvid encoder exists [no]
243   --enable-libzmq          enable message passing via libzmq [no]
244   --enable-openal          enable OpenAL 1.1 capture support [no]
245   --enable-opencl          enable OpenCL code
246   --enable-openssl         enable openssl [no]
247   --enable-x11grab         enable X11 grabbing [no]
248   --disable-zlib           disable zlib [autodetect]
249
250 Advanced options (experts only):
251   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
252   --enable-cross-compile   assume a cross-compiler is used
253   --sysroot=PATH           root of cross-build tree
254   --sysinclude=PATH        location of cross-build system headers
255   --target-os=OS           compiler targets OS [$target_os]
256   --target-exec=CMD        command to run executables on target
257   --target-path=DIR        path to view of build directory on target
258   --target-samples=DIR     path to samples directory on target
259   --toolchain=NAME         set tool defaults according to NAME
260   --nm=NM                  use nm tool NM [$nm_default]
261   --ar=AR                  use archive tool AR [$ar_default]
262   --as=AS                  use assembler AS [$as_default]
263   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
264   --cc=CC                  use C compiler CC [$cc_default]
265   --cxx=CXX                use C compiler CXX [$cxx_default]
266   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
267   --ld=LD                  use linker LD [$ld_default]
268   --host-cc=HOSTCC         use host C compiler HOSTCC
269   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
270   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
271   --host-ld=HOSTLD         use host linker HOSTLD
272   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
273   --host-libs=HLIBS        use libs HLIBS when linking for host
274   --host-os=OS             compiler host OS [$target_os]
275   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
276   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
277   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
278   --extra-libs=ELIBS       add ELIBS [$ELIBS]
279   --extra-version=STRING   version string suffix []
280   --optflags=OPTFLAGS      override optimization-related compiler flags
281   --build-suffix=SUFFIX    library name suffix []
282   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
283   --progs-suffix=SUFFIX    program name suffix []
284   --arch=ARCH              select architecture [$arch]
285   --cpu=CPU                select the minimum required CPU (affects
286                            instruction selection, may crash on older CPUs)
287   --enable-pic             build position-independent code
288   --enable-sram            allow use of on-chip SRAM
289   --enable-thumb           compile for Thumb instruction set
290   --disable-symver         disable symbol versioning
291   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
292   --disable-safe-bitstream-reader
293                            disable buffer boundary checking in bitreaders
294                            (faster, but may crash)
295   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
296   --enable-lto             use link-time optimization
297
298 Optimization options (experts only):
299   --disable-asm            disable all assembler optimizations
300   --disable-altivec        disable AltiVec optimizations
301   --disable-amd3dnow       disable 3DNow! optimizations
302   --disable-amd3dnowext    disable 3DNow! extended optimizations
303   --disable-mmx            disable MMX optimizations
304   --disable-mmxext         disable MMXEXT optimizations
305   --disable-sse            disable SSE optimizations
306   --disable-sse2           disable SSE2 optimizations
307   --disable-sse3           disable SSE3 optimizations
308   --disable-ssse3          disable SSSE3 optimizations
309   --disable-sse4           disable SSE4 optimizations
310   --disable-sse42          disable SSE4.2 optimizations
311   --disable-avx            disable AVX optimizations
312   --disable-fma4           disable FMA4 optimizations
313   --disable-armv5te        disable armv5te optimizations
314   --disable-armv6          disable armv6 optimizations
315   --disable-armv6t2        disable armv6t2 optimizations
316   --disable-vfp            disable VFP optimizations
317   --disable-neon           disable NEON optimizations
318   --disable-vis            disable VIS optimizations
319   --disable-inline-asm     disable use of inline assembler
320   --disable-yasm           disable use of yasm assembler
321   --disable-mips32r2       disable MIPS32R2 optimizations
322   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
323   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
324   --disable-mipsfpu        disable floating point MIPS optimizations
325   --disable-fast-unaligned consider unaligned accesses slow
326
327 Developer options (useful when working on FFmpeg itself):
328   --disable-debug          disable debugging symbols
329   --enable-debug=LEVEL     set the debug level [$debuglevel]
330   --disable-optimizations  disable compiler optimizations
331   --enable-extra-warnings  enable more compiler warnings
332   --disable-stripping      disable stripping of executables and shared libraries
333   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
334                            2 causes a slowdown at runtime.
335   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
336   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
337                            leaks and errors, using the specified valgrind binary.
338                            Cannot be combined with --target-exec
339   --enable-ftrapv          Trap arithmetic overflows
340   --samples=PATH           location of test samples for FATE, if not set use
341                            \$FATE_SAMPLES at make invocation time.
342   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
343                            should be used only for debugging purposes)
344   --enable-random          randomly enable/disable components
345   --disable-random
346   --enable-random=LIST     randomly enable/disable specific components or
347   --disable-random=LIST    component groups. LIST is a comma-separated list
348                            of NAME[:PROB] entries where NAME is a component
349                            (group) and PROB the probability associated with
350                            NAME (default 0.5).
351   --random-seed=VALUE      seed value for --enable/disable-random
352
353 NOTE: Object files are built at the place where configure is launched.
354 EOF
355   exit 0
356 }
357
358 quotes='""'
359
360 log(){
361     echo "$@" >> $logfile
362 }
363
364 log_file(){
365     log BEGIN $1
366     pr -n -t $1 >> $logfile
367     log END $1
368 }
369
370 echolog(){
371     log "$@"
372     echo "$@"
373 }
374
375 warn(){
376     log "WARNING: $*"
377     WARNINGS="${WARNINGS}WARNING: $*\n"
378 }
379
380 die(){
381     echolog "$@"
382     cat <<EOF
383
384 If you think configure made a mistake, make sure you are using the latest
385 version from Git.  If the latest version fails, report the problem to the
386 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
387 EOF
388     if disabled logging; then
389         cat <<EOF
390 Rerun configure with logging enabled (do not use --disable-logging), and
391 include the log this produces with your report.
392 EOF
393     else
394         cat <<EOF
395 Include the log file "$logfile" produced by configure as this will help
396 solving the problem.
397 EOF
398     fi
399     exit 1
400 }
401
402 # Avoid locale weirdness, besides we really just want to translate ASCII.
403 toupper(){
404     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
405 }
406
407 tolower(){
408     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
409 }
410
411 c_escape(){
412     echo "$*" | sed 's/["\\]/\\\0/g'
413 }
414
415 sh_quote(){
416     v=$(echo "$1" | sed "s/'/'\\\\''/g")
417     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
418     echo "$v"
419 }
420
421 cleanws(){
422     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
423 }
424
425 filter(){
426     pat=$1
427     shift
428     for v; do
429         eval "case $v in $pat) echo $v ;; esac"
430     done
431 }
432
433 filter_out(){
434     pat=$1
435     shift
436     for v; do
437         eval "case $v in $pat) ;; *) echo $v ;; esac"
438     done
439 }
440
441 map(){
442     m=$1
443     shift
444     for v; do eval $m; done
445 }
446
447 add_suffix(){
448     suffix=$1
449     shift
450     for v; do echo ${v}${suffix}; done
451 }
452
453 set_all(){
454     value=$1
455     shift
456     for var in $*; do
457         eval $var=$value
458     done
459 }
460
461 set_weak(){
462     value=$1
463     shift
464     for var; do
465         eval : \${$var:=$value}
466     done
467 }
468
469 sanitize_var_name(){
470     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
471 }
472
473 set_safe(){
474     var=$1
475     shift
476     eval $(sanitize_var_name "$var")='$*'
477 }
478
479 get_safe(){
480     eval echo \$$(sanitize_var_name "$1")
481 }
482
483 pushvar(){
484     for pvar in $*; do
485         eval level=\${${pvar}_level:=0}
486         eval ${pvar}_${level}="\$$pvar"
487         eval ${pvar}_level=$(($level+1))
488     done
489 }
490
491 popvar(){
492     for pvar in $*; do
493         eval level=\${${pvar}_level:-0}
494         test $level = 0 && continue
495         eval level=$(($level-1))
496         eval $pvar="\${${pvar}_${level}}"
497         eval ${pvar}_level=$level
498         eval unset ${pvar}_${level}
499     done
500 }
501
502 enable(){
503     set_all yes $*
504 }
505
506 disable(){
507     set_all no $*
508 }
509
510 enable_weak(){
511     set_weak yes $*
512 }
513
514 disable_weak(){
515     set_weak no $*
516 }
517
518 enable_safe(){
519     for var; do
520         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
521     done
522 }
523
524 disable_safe(){
525     for var; do
526         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
527     done
528 }
529
530 do_enable_deep(){
531     for var; do
532         enabled $var && continue
533         eval sel="\$${var}_select"
534         eval sgs="\$${var}_suggest"
535         pushvar var sgs
536         enable_deep $sel
537         popvar sgs
538         enable_deep_weak $sgs
539         popvar var
540     done
541 }
542
543 enable_deep(){
544     do_enable_deep $*
545     enable $*
546 }
547
548 enable_deep_weak(){
549     for var; do
550         disabled $var && continue
551         pushvar var
552         do_enable_deep $var
553         popvar var
554         enable_weak $var
555     done
556 }
557
558 enabled(){
559     test "${1#!}" = "$1" && op== || op=!=
560     eval test "x\$${1#!}" $op "xyes"
561 }
562
563 disabled(){
564     test "${1#!}" = "$1" && op== || op=!=
565     eval test "x\$${1#!}" $op "xno"
566 }
567
568 enabled_all(){
569     for opt; do
570         enabled $opt || return 1
571     done
572 }
573
574 disabled_all(){
575     for opt; do
576         disabled $opt || return 1
577     done
578 }
579
580 enabled_any(){
581     for opt; do
582         enabled $opt && return 0
583     done
584 }
585
586 disabled_any(){
587     for opt; do
588         disabled $opt && return 0
589     done
590     return 1
591 }
592
593 set_default(){
594     for opt; do
595         eval : \${$opt:=\$${opt}_default}
596     done
597 }
598
599 is_in(){
600     value=$1
601     shift
602     for var in $*; do
603         [ $var = $value ] && return 0
604     done
605     return 1
606 }
607
608 do_check_deps(){
609     for cfg; do
610         cfg="${cfg#!}"
611         enabled ${cfg}_checking && die "Circular dependency for $cfg."
612         disabled ${cfg}_checking && continue
613         enable ${cfg}_checking
614         append allopts $cfg
615
616         eval dep_all="\$${cfg}_deps"
617         eval dep_any="\$${cfg}_deps_any"
618         eval dep_sel="\$${cfg}_select"
619         eval dep_sgs="\$${cfg}_suggest"
620         eval dep_ifa="\$${cfg}_if"
621         eval dep_ifn="\$${cfg}_if_any"
622
623         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
624         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
625         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
626
627         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
628         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
629         enabled_all  $dep_all || disable $cfg
630         enabled_any  $dep_any || disable $cfg
631         disabled_any $dep_sel && disable $cfg
632
633         if enabled $cfg; then
634             enable_deep $dep_sel
635             enable_deep_weak $dep_sgs
636         fi
637
638         disable ${cfg}_checking
639     done
640 }
641
642 check_deps(){
643     unset allopts
644
645     do_check_deps "$@"
646
647     for cfg in $allopts; do
648         enabled $cfg || continue
649         eval dep_extralibs="\$${cfg}_extralibs"
650         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
651     done
652 }
653
654 print_config(){
655     pfx=$1
656     files=$2
657     shift 2
658     map 'eval echo "$v \${$v:-no}"' "$@" |
659     awk "BEGIN { split(\"$files\", files) }
660         {
661             c = \"$pfx\" toupper(\$1);
662             v = \$2;
663             sub(/yes/, 1, v);
664             sub(/no/,  0, v);
665             for (f in files) {
666                 file = files[f];
667                 if (file ~ /\\.h\$/) {
668                     printf(\"#define %s %d\\n\", c, v) >>file;
669                 } else if (file ~ /\\.asm\$/) {
670                     printf(\"%%define %s %d\\n\", c, v) >>file;
671                 } else if (file ~ /\\.mak\$/) {
672                     n = -v ? \"\" : \"!\";
673                     printf(\"%s%s=yes\\n\", n, c) >>file;
674                 } else if (file ~ /\\.texi\$/) {
675                     pre = -v ? \"\" : \"@c \";
676                     yesno = \$2;
677                     c2 = tolower(c);
678                     gsub(/_/, \"-\", c2);
679                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
680                 }
681             }
682         }"
683 }
684
685 print_enabled(){
686     suf=$1
687     shift
688     for v; do
689         enabled $v && printf "%s\n" ${v%$suf};
690     done
691 }
692
693 append(){
694     var=$1
695     shift
696     eval "$var=\"\$$var $*\""
697 }
698
699 prepend(){
700     var=$1
701     shift
702     eval "$var=\"$* \$$var\""
703 }
704
705 add_cppflags(){
706     append CPPFLAGS "$@"
707 }
708
709 add_cflags(){
710     append CFLAGS $($cflags_filter "$@")
711 }
712
713 add_cxxflags(){
714     append CXXFLAGS $($cflags_filter "$@")
715 }
716
717 add_asflags(){
718     append ASFLAGS $($asflags_filter "$@")
719 }
720
721 add_ldflags(){
722     append LDFLAGS $($ldflags_filter "$@")
723 }
724
725 add_extralibs(){
726     prepend extralibs $($ldflags_filter "$@")
727 }
728
729 add_host_cppflags(){
730     append host_cppflags "$@"
731 }
732
733 add_host_cflags(){
734     append host_cflags $($host_cflags_filter "$@")
735 }
736
737 add_host_ldflags(){
738     append host_ldflags $($host_ldflags_filter "$@")
739 }
740
741 add_compat(){
742     append compat_objs $1
743     shift
744     map 'add_cppflags -D$v' "$@"
745 }
746
747 check_cmd(){
748     log "$@"
749     "$@" >> $logfile 2>&1
750 }
751
752 cc_o(){
753     eval printf '%s\\n' $CC_O
754 }
755
756 cc_e(){
757     eval printf '%s\\n' $CC_E
758 }
759
760 check_cc(){
761     log check_cc "$@"
762     cat > $TMPC
763     log_file $TMPC
764     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
765 }
766
767 check_cxx(){
768     log check_cxx "$@"
769     cat > $TMPCPP
770     log_file $TMPCPP
771     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
772 }
773
774 check_cpp(){
775     log check_cpp "$@"
776     cat > $TMPC
777     log_file $TMPC
778     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
779 }
780
781 as_o(){
782     eval printf '%s\\n' $AS_O
783 }
784
785 check_as(){
786     log check_as "$@"
787     cat > $TMPS
788     log_file $TMPS
789     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
790 }
791
792 check_inline_asm(){
793     log check_inline_asm "$@"
794     name="$1"
795     code="$2"
796     shift 2
797     disable $name
798     check_cc "$@" <<EOF && enable $name
799 void foo(void){ __asm__ volatile($code); }
800 EOF
801 }
802
803 check_insn(){
804     log check_insn "$@"
805     check_inline_asm ${1}_inline "\"$2\""
806     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
807 }
808
809 check_yasm(){
810     log check_yasm "$@"
811     echo "$1" > $TMPS
812     log_file $TMPS
813     shift 1
814     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
815 }
816
817 ld_o(){
818     eval printf '%s\\n' $LD_O
819 }
820
821 check_ld(){
822     log check_ld "$@"
823     type=$1
824     shift 1
825     flags=$(filter_out '-l*|*.so' $@)
826     libs=$(filter '-l*|*.so' $@)
827     check_$type $($cflags_filter $flags) || return
828     flags=$($ldflags_filter $flags)
829     libs=$($ldflags_filter $libs)
830     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
831 }
832
833 check_code(){
834     log check_code "$@"
835     check=$1
836     headers=$2
837     code=$3
838     shift 3
839     {
840         for hdr in $headers; do
841             echo "#include <$hdr>"
842         done
843         echo "int main(void) { $code; return 0; }"
844     } | check_$check "$@"
845 }
846
847 check_cppflags(){
848     log check_cppflags "$@"
849     check_cc "$@" <<EOF && append CPPFLAGS "$@"
850 int x;
851 EOF
852 }
853
854 check_cflags(){
855     log check_cflags "$@"
856     set -- $($cflags_filter "$@")
857     check_cc "$@" <<EOF && append CFLAGS "$@"
858 int x;
859 EOF
860 }
861
862 check_cxxflags(){
863     log check_cxxflags "$@"
864     set -- $($cflags_filter "$@")
865     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
866 int x;
867 EOF
868 }
869
870 test_ldflags(){
871     log test_ldflags "$@"
872     check_ld "cc" "$@" <<EOF
873 int main(void){ return 0; }
874 EOF
875 }
876
877 check_ldflags(){
878     log check_ldflags "$@"
879     test_ldflags "$@" && add_ldflags "$@"
880 }
881
882 check_header(){
883     log check_header "$@"
884     header=$1
885     shift
886     disable_safe $header
887     check_cpp "$@" <<EOF && enable_safe $header
888 #include <$header>
889 int x;
890 EOF
891 }
892
893 check_func(){
894     log check_func "$@"
895     func=$1
896     shift
897     disable $func
898     check_ld "cc" "$@" <<EOF && enable $func
899 extern int $func();
900 int main(void){ $func(); }
901 EOF
902 }
903
904 check_mathfunc(){
905     log check_mathfunc "$@"
906     func=$1
907     narg=$2
908     shift 2
909     test $narg = 2 && args="f, g" || args="f"
910     disable $func
911     check_ld "cc" "$@" <<EOF && enable $func
912 #include <math.h>
913 float foo(float f, float g) { return $func($args); }
914 int main(void){ return (int) foo; }
915 EOF
916 }
917
918 check_func_headers(){
919     log check_func_headers "$@"
920     headers=$1
921     funcs=$2
922     shift 2
923     {
924         for hdr in $headers; do
925             echo "#include <$hdr>"
926         done
927         for func in $funcs; do
928             echo "long check_$func(void) { return (long) $func; }"
929         done
930         echo "int main(void) { return 0; }"
931     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
932 }
933
934 check_class_headers_cpp(){
935     log check_class_headers_cpp "$@"
936     headers=$1
937     classes=$2
938     shift 2
939     {
940         for hdr in $headers; do
941             echo "#include <$hdr>"
942         done
943         echo "int main(void) { "
944         i=1
945         for class in $classes; do
946             echo "$class obj$i;"
947             i=$(expr $i + 1)
948         done
949         echo "return 0; }"
950     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
951 }
952
953 check_cpp_condition(){
954     log check_cpp_condition "$@"
955     header=$1
956     condition=$2
957     shift 2
958     check_cpp "$@" <<EOF
959 #include <$header>
960 #if !($condition)
961 #error "unsatisfied condition: $condition"
962 #endif
963 EOF
964 }
965
966 check_lib(){
967     log check_lib "$@"
968     header="$1"
969     func="$2"
970     shift 2
971     check_header $header && check_func $func "$@" && add_extralibs "$@"
972 }
973
974 check_lib2(){
975     log check_lib2 "$@"
976     headers="$1"
977     funcs="$2"
978     shift 2
979     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
980 }
981
982 check_lib_cpp(){
983     log check_lib_cpp "$@"
984     headers="$1"
985     classes="$2"
986     shift 2
987     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
988 }
989
990 check_pkg_config(){
991     log check_pkg_config "$@"
992     pkg="$1"
993     headers="$2"
994     funcs="$3"
995     shift 3
996     $pkg_config --exists $pkg 2>/dev/null || return
997     pkg_cflags=$($pkg_config --cflags $pkg)
998     pkg_libs=$($pkg_config --libs $pkg)
999     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1000         set_safe ${pkg}_cflags $pkg_cflags   &&
1001         set_safe ${pkg}_libs   $pkg_libs
1002 }
1003
1004 check_exec(){
1005     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1006 }
1007
1008 check_exec_crash(){
1009     code=$(cat)
1010
1011     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1012     # are safe but may not be available everywhere.  Thus we use
1013     # raise(SIGTERM) instead.  The check is run in a subshell so we
1014     # can redirect the "Terminated" message from the shell.  SIGBUS
1015     # is not defined by standard C so it is used conditionally.
1016
1017     (check_exec "$@") >> $logfile 2>&1 <<EOF
1018 #include <signal.h>
1019 static void sighandler(int sig){
1020     raise(SIGTERM);
1021 }
1022 int foo(void){
1023     $code
1024 }
1025 int (*func_ptr)(void) = foo;
1026 int main(void){
1027     signal(SIGILL, sighandler);
1028     signal(SIGFPE, sighandler);
1029     signal(SIGSEGV, sighandler);
1030 #ifdef SIGBUS
1031     signal(SIGBUS, sighandler);
1032 #endif
1033     return func_ptr();
1034 }
1035 EOF
1036 }
1037
1038 check_type(){
1039     log check_type "$@"
1040     headers=$1
1041     type=$2
1042     shift 2
1043     disable_safe "$type"
1044     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1045 }
1046
1047 check_struct(){
1048     log check_struct "$@"
1049     headers=$1
1050     struct=$2
1051     member=$3
1052     shift 3
1053     disable_safe "${struct}_${member}"
1054     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1055         enable_safe "${struct}_${member}"
1056 }
1057
1058 check_builtin(){
1059     log check_builtin "$@"
1060     name=$1
1061     headers=$2
1062     builtin=$3
1063     shift 3
1064     disable "$name"
1065     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1066 }
1067
1068 require(){
1069     name="$1"
1070     header="$2"
1071     func="$3"
1072     shift 3
1073     check_lib $header $func "$@" || die "ERROR: $name not found"
1074 }
1075
1076 require2(){
1077     name="$1"
1078     headers="$2"
1079     func="$3"
1080     shift 3
1081     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1082 }
1083
1084 require_cpp(){
1085     name="$1"
1086     headers="$2"
1087     classes="$3"
1088     shift 3
1089     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1090 }
1091
1092 require_pkg_config(){
1093     pkg="$1"
1094     check_pkg_config "$@" || die "ERROR: $pkg not found"
1095     add_cflags    $(get_safe ${pkg}_cflags)
1096     add_extralibs $(get_safe ${pkg}_libs)
1097 }
1098
1099 hostcc_o(){
1100     eval printf '%s\\n' $HOSTCC_O
1101 }
1102
1103 check_host_cc(){
1104     log check_host_cc "$@"
1105     cat > $TMPC
1106     log_file $TMPC
1107     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1108 }
1109
1110 check_host_cppflags(){
1111     log check_host_cppflags "$@"
1112     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1113 int x;
1114 EOF
1115 }
1116
1117 check_host_cflags(){
1118     log check_host_cflags "$@"
1119     set -- $($host_cflags_filter "$@")
1120     check_host_cc "$@" <<EOF && append host_cflags "$@"
1121 int x;
1122 EOF
1123 }
1124
1125 apply(){
1126     file=$1
1127     shift
1128     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1129 }
1130
1131 cp_if_changed(){
1132     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1133     mkdir -p "$(dirname $2)"
1134     $cp_f "$1" "$2"
1135 }
1136
1137 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1138 # system-dependent things.
1139
1140 COMPONENT_LIST="
1141     bsfs
1142     decoders
1143     demuxers
1144     encoders
1145     filters
1146     hwaccels
1147     indevs
1148     muxers
1149     outdevs
1150     parsers
1151     protocols
1152 "
1153
1154 EXTERNAL_LIBRARY_LIST="
1155     avisynth
1156     bzlib
1157     crystalhd
1158     fontconfig
1159     frei0r
1160     gnutls
1161     iconv
1162     libaacplus
1163     libass
1164     libbluray
1165     libcaca
1166     libcdio
1167     libcelt
1168     libdc1394
1169     libfaac
1170     libfdk_aac
1171     libflite
1172     libfreetype
1173     libgme
1174     libgsm
1175     libiec61883
1176     libilbc
1177     libmodplug
1178     libmp3lame
1179     libnut
1180     libopencore_amrnb
1181     libopencore_amrwb
1182     libopencv
1183     libopenjpeg
1184     libopus
1185     libpulse
1186     libquvi
1187     librtmp
1188     libschroedinger
1189     libshine
1190     libsoxr
1191     libspeex
1192     libstagefright_h264
1193     libtheora
1194     libtwolame
1195     libutvideo
1196     libv4l2
1197     libvidstab
1198     libvo_aacenc
1199     libvo_amrwbenc
1200     libvorbis
1201     libvpx
1202     libwavpack
1203     libx264
1204     libxavs
1205     libxvid
1206     libzmq
1207     openal
1208     opencl
1209     openssl
1210     x11grab
1211     zlib
1212 "
1213
1214 DOCUMENT_LIST="
1215     doc
1216     htmlpages
1217     manpages
1218     podpages
1219     txtpages
1220 "
1221
1222 HWACCEL_LIST="
1223     dxva2
1224     vaapi
1225     vda
1226     vdpau
1227 "
1228
1229 LIBRARY_LIST="
1230     avcodec
1231     avdevice
1232     avfilter
1233     avformat
1234     avresample
1235     avutil
1236     postproc
1237     swresample
1238     swscale
1239 "
1240
1241 PROGRAM_LIST="
1242     ffplay
1243     ffprobe
1244     ffserver
1245     ffmpeg
1246 "
1247
1248 CONFIG_LIST="
1249     $COMPONENT_LIST
1250     $DOCUMENT_LIST
1251     $EXTERNAL_LIBRARY_LIST
1252     $HWACCEL_LIST
1253     $LIBRARY_LIST
1254     $PROGRAM_LIST
1255     dct
1256     dwt
1257     error_resilience
1258     fast_unaligned
1259     fft
1260     ftrapv
1261     gpl
1262     gray
1263     hardcoded_tables
1264     incompatible_libav_abi
1265     incompatible_fork_abi
1266     lsp
1267     lzo
1268     mdct
1269     memalign_hack
1270     memory_poisoning
1271     network
1272     nonfree
1273     pic
1274     rdft
1275     runtime_cpudetect
1276     safe_bitstream_reader
1277     shared
1278     small
1279     sram
1280     static
1281     swscale_alpha
1282     thumb
1283     version3
1284     xmm_clobber_test
1285 "
1286
1287 THREADS_LIST='
1288     pthreads
1289     w32threads
1290     os2threads
1291 '
1292
1293 ATOMICS_LIST='
1294     atomics_gcc
1295     atomics_suncc
1296     atomics_win32
1297 '
1298
1299 ARCH_LIST='
1300     aarch64
1301     alpha
1302     arm
1303     avr32
1304     avr32_ap
1305     avr32_uc
1306     bfin
1307     ia64
1308     m68k
1309     mips
1310     mips64
1311     parisc
1312     ppc
1313     ppc64
1314     s390
1315     sh4
1316     sparc
1317     sparc64
1318     tilegx
1319     tilepro
1320     tomi
1321     x86
1322     x86_32
1323     x86_64
1324 '
1325
1326 ARCH_EXT_LIST_ARM='
1327     armv5te
1328     armv6
1329     armv6t2
1330     neon
1331     vfp
1332     vfpv3
1333 '
1334
1335 ARCH_EXT_LIST_X86='
1336     amd3dnow
1337     amd3dnowext
1338     avx
1339     fma4
1340     mmx
1341     mmxext
1342     sse
1343     sse2
1344     sse3
1345     sse4
1346     sse42
1347     ssse3
1348 '
1349
1350 ARCH_EXT_LIST="
1351     $ARCH_EXT_LIST_ARM
1352     $ARCH_EXT_LIST_X86
1353     altivec
1354     ppc4xx
1355     vis
1356     mipsfpu
1357     mips32r2
1358     mipsdspr1
1359     mipsdspr2
1360 "
1361
1362 HAVE_LIST_CMDLINE='
1363     inline_asm
1364     symver
1365     yasm
1366 '
1367
1368 HAVE_LIST_PUB='
1369     bigendian
1370     fast_unaligned
1371     incompatible_libav_abi
1372     incompatible_fork_abi
1373 '
1374
1375 MATH_FUNCS="
1376     atanf
1377     atan2f
1378     cbrt
1379     cbrtf
1380     cosf
1381     exp2
1382     exp2f
1383     expf
1384     isinf
1385     isnan
1386     ldexpf
1387     llrint
1388     llrintf
1389     log2
1390     log2f
1391     log10f
1392     lrint
1393     lrintf
1394     powf
1395     rint
1396     round
1397     roundf
1398     sinf
1399     trunc
1400     truncf
1401 "
1402
1403 HAVE_LIST="
1404     $ARCH_EXT_LIST
1405     $(add_suffix _external $ARCH_EXT_LIST)
1406     $(add_suffix _inline   $ARCH_EXT_LIST)
1407     $HAVE_LIST_CMDLINE
1408     $HAVE_LIST_PUB
1409     $THREADS_LIST
1410     $ATOMICS_LIST
1411     $MATH_FUNCS
1412     access
1413     aligned_malloc
1414     aligned_stack
1415     alsa_asoundlib_h
1416     altivec_h
1417     arpa_inet_h
1418     asm_mod_q
1419     asm_mod_y
1420     asm_types_h
1421     atomic_cas_ptr
1422     atomics_native
1423     attribute_may_alias
1424     attribute_packed
1425     cdio_paranoia_h
1426     cdio_paranoia_paranoia_h
1427     CL_cl_h
1428     clock_gettime
1429     closesocket
1430     CommandLineToArgvW
1431     cpunop
1432     CryptGenRandom
1433     dcbzl
1434     dev_bktr_ioctl_bt848_h
1435     dev_bktr_ioctl_meteor_h
1436     dev_ic_bt8xx_h
1437     dev_video_bktr_ioctl_bt848_h
1438     dev_video_meteor_ioctl_meteor_h
1439     direct_h
1440     dlfcn_h
1441     dlopen
1442     dos_paths
1443     dxva_h
1444     ebp_available
1445     ebx_available
1446     fast_64bit
1447     fast_clz
1448     fast_cmov
1449     fcntl
1450     fork
1451     getaddrinfo
1452     gethrtime
1453     getopt
1454     GetProcessAffinityMask
1455     GetProcessMemoryInfo
1456     GetProcessTimes
1457     GetSystemTimeAsFileTime
1458     getrusage
1459     getservbyport
1460     gettimeofday
1461     glob
1462     gnu_as
1463     gsm_h
1464     i686
1465     ibm_asm
1466     inet_aton
1467     io_h
1468     inline_asm_labels
1469     isatty
1470     jack_port_get_latency_range
1471     kbhit
1472     ldbrx
1473     libdc1394_1
1474     libdc1394_2
1475     local_aligned_16
1476     local_aligned_8
1477     localtime_r
1478     loongson
1479     lzo1x_999_compress
1480     machine_ioctl_bt848_h
1481     machine_ioctl_meteor_h
1482     machine_rw_barrier
1483     makeinfo
1484     malloc_h
1485     MapViewOfFile
1486     memalign
1487     MemoryBarrier
1488     mkstemp
1489     mm_empty
1490     mmap
1491     mprotect
1492     msvcrt
1493     nanosleep
1494     openjpeg_1_5_openjpeg_h
1495     PeekNamedPipe
1496     perl
1497     pod2man
1498     poll_h
1499     posix_memalign
1500     pragma_deprecated
1501     pthread_cancel
1502     rdtsc
1503     rsync_contimeout
1504     sarestart
1505     sched_getaffinity
1506     sdl
1507     SetConsoleTextAttribute
1508     setmode
1509     setrlimit
1510     Sleep
1511     sndio_h
1512     socklen_t
1513     soundcard_h
1514     strerror_r
1515     struct_addrinfo
1516     struct_group_source_req
1517     struct_ip_mreq_source
1518     struct_ipv6_mreq
1519     struct_pollfd
1520     struct_rusage_ru_maxrss
1521     struct_sctp_event_subscribe
1522     struct_sockaddr_in6
1523     struct_sockaddr_sa_len
1524     struct_sockaddr_storage
1525     struct_stat_st_mtim_tv_nsec
1526     struct_v4l2_frmivalenum_discrete
1527     symver_asm_label
1528     symver_gnu_asm
1529     sync_val_compare_and_swap
1530     sysconf
1531     sysctl
1532     sys_mman_h
1533     sys_param_h
1534     sys_resource_h
1535     sys_select_h
1536     sys_soundcard_h
1537     sys_time_h
1538     sys_un_h
1539     sys_videoio_h
1540     termios_h
1541     texi2html
1542     threads
1543     unistd_h
1544     usleep
1545     vfp_args
1546     VirtualAlloc
1547     windows_h
1548     winsock2_h
1549     xform_asm
1550     xmm_clobbers
1551 "
1552
1553 # options emitted with CONFIG_ prefix but not available on the command line
1554 CONFIG_EXTRA="
1555     aandcttables
1556     ac3dsp
1557     audio_frame_queue
1558     dsputil
1559     frame_thread_encoder
1560     gcrypt
1561     golomb
1562     gplv3
1563     h264chroma
1564     h264dsp
1565     h264pred
1566     h264qpel
1567     hpeldsp
1568     huffman
1569     lgplv3
1570     lpc
1571     mpegaudio
1572     mpegaudiodsp
1573     mpegvideo
1574     mpegvideoenc
1575     nettle
1576     rangecoder
1577     riffdec
1578     riffenc
1579     rtpdec
1580     rtpenc_chain
1581     sinewin
1582     videodsp
1583     vp3dsp
1584 "
1585
1586 CMDLINE_SELECT="
1587     $ARCH_EXT_LIST
1588     $CONFIG_LIST
1589     $HAVE_LIST_CMDLINE
1590     $THREADS_LIST
1591     asm
1592     cross_compile
1593     debug
1594     extra_warnings
1595     logging
1596     lto
1597     optimizations
1598     stripping
1599 "
1600
1601 PATHS_LIST='
1602     bindir
1603     datadir
1604     incdir
1605     libdir
1606     mandir
1607     prefix
1608     shlibdir
1609 '
1610
1611 CMDLINE_SET="
1612     $PATHS_LIST
1613     ar
1614     arch
1615     as
1616     assert_level
1617     build_suffix
1618     cc
1619     cpu
1620     cross_prefix
1621     cxx
1622     dep_cc
1623     extra_version
1624     host_cc
1625     host_cflags
1626     host_ld
1627     host_ldflags
1628     host_libs
1629     host_os
1630     install
1631     ld
1632     logfile
1633     malloc_prefix
1634     nm
1635     optflags
1636     pkg_config
1637     progs_suffix
1638     random_seed
1639     samples
1640     strip
1641     sysinclude
1642     sysroot
1643     target_exec
1644     target_os
1645     target_path
1646     target_samples
1647     toolchain
1648     valgrind
1649     yasmexe
1650 "
1651
1652 CMDLINE_APPEND="
1653     extra_cflags
1654     extra_cxxflags
1655     host_cppflags
1656 "
1657
1658 # code dependency declarations
1659
1660 # architecture extensions
1661
1662 armv5te_deps="arm"
1663 armv6_deps="arm"
1664 armv6t2_deps="arm"
1665 neon_deps="arm"
1666 vfp_deps="arm"
1667 vfpv3_deps="vfp"
1668
1669 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1670
1671 mipsfpu_deps="mips"
1672 mips32r2_deps="mips"
1673 mipsdspr1_deps="mips"
1674 mipsdspr2_deps="mips"
1675
1676 altivec_deps="ppc"
1677 ppc4xx_deps="ppc"
1678
1679 vis_deps="sparc"
1680
1681 x86_64_suggest="fast_cmov i686"
1682
1683 amd3dnow_deps="mmx"
1684 amd3dnowext_deps="amd3dnow"
1685 mmx_deps="x86"
1686 mmxext_deps="mmx"
1687 sse_deps="mmxext"
1688 sse2_deps="sse"
1689 sse3_deps="sse2"
1690 ssse3_deps="sse3"
1691 sse4_deps="ssse3"
1692 sse42_deps="sse4"
1693 avx_deps="sse42"
1694 fma4_deps="avx"
1695
1696 mmx_external_deps="yasm"
1697 mmx_inline_deps="inline_asm"
1698 mmx_suggest="mmx_external mmx_inline"
1699
1700 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1701     eval dep=\$${ext}_deps
1702     eval ${ext}_external_deps='"${dep}_external"'
1703     eval ${ext}_inline_deps='"${dep}_inline"'
1704     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1705 done
1706
1707 aligned_stack_if_any="ppc x86"
1708 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1709 fast_clz_if_any="alpha avr32 mips ppc x86"
1710 fast_unaligned_if_any="ppc x86"
1711
1712 inline_asm_deps="!tms470"
1713 need_memalign="altivec neon sse"
1714
1715 symver_if_any="symver_asm_label symver_gnu_asm"
1716
1717 log2_deps="!msvcrt"
1718
1719 # subsystems
1720 dct_select="rdft"
1721 error_resilience_select="dsputil"
1722 frame_thread_encoder_deps="encoders threads"
1723 lpc_select="dsputil"
1724 mdct_select="fft"
1725 rdft_select="fft"
1726 mpegaudio_select="mpegaudiodsp"
1727 mpegaudiodsp_select="dct"
1728 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1729 mpegvideoenc_select="mpegvideo"
1730
1731 # decoders / encoders
1732 aac_decoder_select="mdct sinewin"
1733 aac_encoder_select="audio_frame_queue mdct sinewin"
1734 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1735 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1736 ac3_encoder_select="mdct ac3dsp dsputil"
1737 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1738 aic_decoder_select="dsputil golomb"
1739 alac_encoder_select="lpc"
1740 als_decoder_select="dsputil"
1741 amrnb_decoder_select="lsp"
1742 amrwb_decoder_select="lsp"
1743 amv_decoder_select="dsputil hpeldsp"
1744 amv_encoder_select="aandcttables"
1745 ape_decoder_select="dsputil"
1746 asv1_decoder_select="dsputil"
1747 asv1_encoder_select="dsputil"
1748 asv2_decoder_select="dsputil"
1749 asv2_encoder_select="dsputil"
1750 atrac1_decoder_select="mdct sinewin"
1751 atrac3_decoder_select="mdct"
1752 bink_decoder_select="dsputil hpeldsp"
1753 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1754 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1755 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1756 cllc_decoder_select="dsputil"
1757 comfortnoise_encoder_select="lpc"
1758 cook_decoder_select="dsputil mdct sinewin"
1759 cscd_decoder_select="lzo"
1760 cscd_decoder_suggest="zlib"
1761 dca_decoder_select="mdct"
1762 dirac_decoder_select="dsputil dwt golomb videodsp"
1763 dnxhd_decoder_select="dsputil"
1764 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1765 dvvideo_decoder_select="dsputil"
1766 dvvideo_encoder_select="dsputil"
1767 dxa_decoder_deps="zlib"
1768 eac3_decoder_select="ac3_decoder"
1769 eac3_encoder_select="ac3_encoder"
1770 eamad_decoder_select="aandcttables dsputil mpegvideo"
1771 eatgq_decoder_select="aandcttables"
1772 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1773 exr_decoder_deps="zlib"
1774 ffv1_decoder_select="dsputil golomb rangecoder"
1775 ffv1_encoder_select="dsputil rangecoder"
1776 ffvhuff_decoder_select="dsputil"
1777 ffvhuff_encoder_select="dsputil huffman"
1778 flac_decoder_select="golomb"
1779 flac_encoder_select="dsputil golomb lpc"
1780 flashsv_decoder_deps="zlib"
1781 flashsv_encoder_deps="zlib"
1782 flashsv2_encoder_deps="zlib"
1783 flashsv2_decoder_deps="zlib"
1784 flv_decoder_select="h263_decoder"
1785 flv_encoder_select="h263_encoder"
1786 fourxm_decoder_select="dsputil"
1787 fraps_decoder_select="dsputil huffman"
1788 g2m_decoder_deps="zlib"
1789 g2m_decoder_select="dsputil"
1790 g729_decoder_select="dsputil"
1791 h261_decoder_select="error_resilience mpegvideo"
1792 h261_encoder_select="aandcttables mpegvideoenc"
1793 h263_decoder_select="error_resilience h263_parser mpegvideo"
1794 h263_encoder_select="aandcttables mpegvideoenc"
1795 h263i_decoder_select="h263_decoder"
1796 h263p_encoder_select="h263_encoder"
1797 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1798 h264_decoder_suggest="error_resilience"
1799 huffyuv_decoder_select="dsputil"
1800 huffyuv_encoder_select="dsputil huffman"
1801 iac_decoder_select="dsputil fft mdct sinewin"
1802 imc_decoder_select="dsputil fft mdct sinewin"
1803 indeo3_decoder_select="hpeldsp"
1804 interplay_video_decoder_select="hpeldsp"
1805 jpegls_decoder_select="dsputil golomb hpeldsp"
1806 jpegls_encoder_select="golomb"
1807 jv_decoder_select="dsputil"
1808 lagarith_decoder_select="dsputil"
1809 ljpeg_encoder_select="aandcttables mpegvideoenc"
1810 loco_decoder_select="golomb"
1811 mdec_decoder_select="dsputil error_resilience mpegvideo"
1812 metasound_decoder_select="lsp mdct sinewin"
1813 mimic_decoder_select="dsputil hpeldsp"
1814 mjpeg_decoder_select="dsputil hpeldsp"
1815 mjpegb_decoder_select="dsputil hpeldsp"
1816 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1817 mlp_decoder_select="dsputil mlp_parser"
1818 motionpixels_decoder_select="dsputil"
1819 mp1_decoder_select="mpegaudio"
1820 mp1float_decoder_select="mpegaudio"
1821 mp2_decoder_select="mpegaudio"
1822 mp2float_decoder_select="mpegaudio"
1823 mp3_decoder_select="mpegaudio"
1824 mp3adu_decoder_select="mpegaudio"
1825 mp3adufloat_decoder_select="mpegaudio"
1826 mp3float_decoder_select="mpegaudio"
1827 mp3on4_decoder_select="mpegaudio"
1828 mp3on4float_decoder_select="mpegaudio"
1829 mpc7_decoder_select="dsputil mpegaudiodsp"
1830 mpc8_decoder_select="dsputil mpegaudiodsp"
1831 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1832 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1833 mpeg1video_decoder_select="error_resilience mpegvideo"
1834 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1835 mpeg2video_decoder_select="error_resilience mpegvideo"
1836 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1837 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1838 mpeg4_encoder_select="h263_encoder"
1839 msmpeg4v1_decoder_select="h263_decoder"
1840 msmpeg4v2_decoder_select="h263_decoder"
1841 msmpeg4v2_encoder_select="h263_encoder"
1842 msmpeg4v3_decoder_select="h263_decoder"
1843 msmpeg4v3_encoder_select="h263_encoder"
1844 mss2_decoder_select="error_resilience vc1_decoder"
1845 mxpeg_decoder_select="dsputil hpeldsp"
1846 nellymoser_decoder_select="mdct sinewin"
1847 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1848 nuv_decoder_select="dsputil lzo"
1849 png_decoder_deps="zlib"
1850 png_encoder_deps="zlib"
1851 png_encoder_select="dsputil"
1852 prores_decoder_select="dsputil"
1853 prores_encoder_select="dsputil"
1854 qcelp_decoder_select="lsp"
1855 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1856 ra_144_encoder_select="audio_frame_queue lpc"
1857 ralf_decoder_select="golomb"
1858 rtjpeg_decoder_select="dsputil"
1859 rv10_decoder_select="error_resilience h263_decoder"
1860 rv10_encoder_select="h263_encoder"
1861 rv20_decoder_select="error_resilience h263_decoder"
1862 rv20_encoder_select="h263_encoder"
1863 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1864 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1865 shorten_decoder_select="golomb"
1866 sipr_decoder_select="lsp"
1867 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
1868 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
1869 sonic_decoder_select="golomb"
1870 sonic_encoder_select="golomb"
1871 sonic_ls_encoder_select="golomb"
1872 sp5x_decoder_select="dsputil hpeldsp"
1873 svq1_decoder_select="hpeldsp"
1874 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1875 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1876 svq3_decoder_suggest="error_resilience zlib"
1877 tak_decoder_select="dsputil"
1878 theora_decoder_select="vp3_decoder"
1879 tiff_decoder_suggest="zlib"
1880 tiff_encoder_suggest="zlib"
1881 thp_decoder_select="dsputil hpeldsp"
1882 truehd_decoder_select="mlp_parser"
1883 truemotion2_decoder_select="dsputil"
1884 truespeech_decoder_select="dsputil"
1885 tscc_decoder_deps="zlib"
1886 twinvq_decoder_select="mdct lsp sinewin"
1887 utvideo_decoder_select="dsputil"
1888 utvideo_encoder_select="dsputil huffman"
1889 vble_decoder_select="dsputil"
1890 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1891 vc1image_decoder_select="vc1_decoder"
1892 vorbis_decoder_select="mdct"
1893 vorbis_encoder_select="mdct"
1894 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1895 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1896 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1897 vp6a_decoder_select="vp6_decoder"
1898 vp6f_decoder_select="vp6_decoder"
1899 vp8_decoder_select="h264pred videodsp"
1900 webp_decoder_select="vp8_decoder"
1901 wmapro_decoder_select="mdct sinewin"
1902 wmav1_decoder_select="mdct sinewin"
1903 wmav1_encoder_select="mdct sinewin"
1904 wmav2_decoder_select="mdct sinewin"
1905 wmav2_encoder_select="mdct sinewin"
1906 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1907 wmv1_decoder_select="h263_decoder"
1908 wmv1_encoder_select="h263_encoder"
1909 wmv2_decoder_select="h263_decoder videodsp"
1910 wmv2_encoder_select="h263_encoder"
1911 wmv3_decoder_select="vc1_decoder"
1912 wmv3image_decoder_select="wmv3_decoder"
1913 zerocodec_decoder_deps="zlib"
1914 zlib_decoder_deps="zlib"
1915 zlib_encoder_deps="zlib"
1916 zmbv_decoder_deps="zlib"
1917 zmbv_encoder_deps="zlib"
1918
1919 # hardware accelerators
1920 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1921 dxva2_deps="dxva2api_h"
1922 vaapi_deps="va_va_h"
1923 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1924 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1925 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1926
1927 h263_vaapi_hwaccel_deps="vaapi"
1928 h263_vaapi_hwaccel_select="h263_decoder"
1929 h263_vdpau_hwaccel_deps="vdpau"
1930 h263_vdpau_hwaccel_select="h263_decoder"
1931 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1932 h264_dxva2_hwaccel_deps="dxva2"
1933 h264_dxva2_hwaccel_select="h264_decoder"
1934 h264_vaapi_hwaccel_deps="vaapi"
1935 h264_vaapi_hwaccel_select="h264_decoder"
1936 h264_vda_decoder_deps="vda"
1937 h264_vda_decoder_select="h264_decoder"
1938 h264_vda_hwaccel_deps="vda"
1939 h264_vda_hwaccel_select="h264_decoder"
1940 h264_vdpau_hwaccel_deps="vdpau"
1941 h264_vdpau_hwaccel_select="h264_decoder"
1942 mpeg1_vdpau_hwaccel_deps="vdpau"
1943 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1944 mpeg2_crystalhd_decoder_select="crystalhd"
1945 mpeg2_dxva2_hwaccel_deps="dxva2"
1946 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1947 mpeg2_vaapi_hwaccel_deps="vaapi"
1948 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1949 mpeg2_vdpau_hwaccel_deps="vdpau"
1950 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1951 mpeg4_crystalhd_decoder_select="crystalhd"
1952 mpeg4_vaapi_hwaccel_deps="vaapi"
1953 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1954 mpeg4_vdpau_hwaccel_deps="vdpau"
1955 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1956 msmpeg4_crystalhd_decoder_select="crystalhd"
1957 vc1_crystalhd_decoder_select="crystalhd"
1958 vc1_dxva2_hwaccel_deps="dxva2"
1959 vc1_dxva2_hwaccel_select="vc1_decoder"
1960 vc1_vaapi_hwaccel_deps="vaapi"
1961 vc1_vaapi_hwaccel_select="vc1_decoder"
1962 vc1_vdpau_hwaccel_deps="vdpau"
1963 vc1_vdpau_hwaccel_select="vc1_decoder"
1964 wmv3_crystalhd_decoder_select="crystalhd"
1965 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1966 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1967 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1968
1969 # parsers
1970 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1971 mpeg4video_parser_select="error_resilience mpegvideo"
1972 mpegvideo_parser_select="error_resilience mpegvideo"
1973 vc1_parser_select="mpegvideo"
1974
1975 # external libraries
1976 libaacplus_encoder_deps="libaacplus"
1977 libcelt_decoder_deps="libcelt"
1978 libfaac_encoder_deps="libfaac"
1979 libfaac_encoder_select="audio_frame_queue"
1980 libfdk_aac_encoder_deps="libfdk_aac"
1981 libfdk_aac_encoder_select="audio_frame_queue"
1982 libgme_demuxer_deps="libgme"
1983 libgsm_decoder_deps="libgsm"
1984 libgsm_encoder_deps="libgsm"
1985 libgsm_ms_decoder_deps="libgsm"
1986 libgsm_ms_encoder_deps="libgsm"
1987 libilbc_decoder_deps="libilbc"
1988 libilbc_encoder_deps="libilbc"
1989 libmodplug_demuxer_deps="libmodplug"
1990 libmp3lame_encoder_deps="libmp3lame"
1991 libmp3lame_encoder_select="audio_frame_queue"
1992 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1993 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1994 libopencore_amrnb_encoder_select="audio_frame_queue"
1995 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1996 libopenjpeg_decoder_deps="libopenjpeg"
1997 libopenjpeg_encoder_deps="libopenjpeg"
1998 libopus_decoder_deps="libopus"
1999 libopus_encoder_deps="libopus"
2000 libopus_encoder_select="audio_frame_queue"
2001 libquvi_demuxer_deps="libquvi"
2002 libschroedinger_decoder_deps="libschroedinger"
2003 libschroedinger_encoder_deps="libschroedinger"
2004 libshine_encoder_deps="libshine"
2005 libshine_encoder_select="audio_frame_queue"
2006 libspeex_decoder_deps="libspeex"
2007 libspeex_encoder_deps="libspeex"
2008 libspeex_encoder_select="audio_frame_queue"
2009 libstagefright_h264_decoder_deps="libstagefright_h264"
2010 libtheora_encoder_deps="libtheora"
2011 libtwolame_encoder_deps="libtwolame"
2012 libvo_aacenc_encoder_deps="libvo_aacenc"
2013 libvo_aacenc_encoder_select="audio_frame_queue"
2014 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2015 libvorbis_decoder_deps="libvorbis"
2016 libvorbis_encoder_deps="libvorbis"
2017 libvorbis_encoder_select="audio_frame_queue"
2018 libvpx_vp8_decoder_deps="libvpx"
2019 libvpx_vp8_encoder_deps="libvpx"
2020 libvpx_vp9_decoder_deps="libvpx"
2021 libvpx_vp9_encoder_deps="libvpx"
2022 libwavpack_encoder_deps="libwavpack"
2023 libx264_encoder_deps="libx264"
2024 libx264rgb_encoder_deps="libx264"
2025 libxavs_encoder_deps="libxavs"
2026 libxvid_encoder_deps="libxvid"
2027 libutvideo_decoder_deps="libutvideo"
2028 libutvideo_encoder_deps="libutvideo"
2029
2030 # demuxers / muxers
2031 ac3_demuxer_select="ac3_parser"
2032 asf_demuxer_select="riffdec"
2033 asf_muxer_select="riffenc"
2034 asf_stream_muxer_select="asf_muxer"
2035 avi_demuxer_select="riffdec"
2036 avi_muxer_select="riffenc"
2037 avisynth_demuxer_deps="avisynth"
2038 avisynth_demuxer_select="riffdec"
2039 caf_demuxer_select="riffdec"
2040 dirac_demuxer_select="dirac_parser"
2041 dts_demuxer_select="dca_parser"
2042 dtshd_demuxer_select="dca_parser"
2043 dxa_demuxer_select="riffdec"
2044 eac3_demuxer_select="ac3_parser"
2045 f4v_muxer_select="mov_muxer"
2046 flac_demuxer_select="flac_parser"
2047 ipod_muxer_select="mov_muxer"
2048 ismv_muxer_select="mov_muxer"
2049 libnut_demuxer_deps="libnut"
2050 libnut_muxer_deps="libnut"
2051 matroska_audio_muxer_select="matroska_muxer"
2052 matroska_demuxer_select="riffdec"
2053 matroska_demuxer_suggest="bzlib lzo zlib"
2054 matroska_muxer_select="riffenc"
2055 mmf_muxer_select="riffenc"
2056 mov_demuxer_select="riffdec"
2057 mov_demuxer_suggest="zlib"
2058 mov_muxer_select="riffenc rtpenc_chain"
2059 mp3_demuxer_select="mpegaudio_parser"
2060 mp4_muxer_select="mov_muxer"
2061 mpegts_muxer_select="adts_muxer latm_muxer"
2062 mpegtsraw_demuxer_select="mpegts_demuxer"
2063 mxf_d10_muxer_select="mxf_muxer"
2064 nut_muxer_select="riffenc"
2065 nuv_demuxer_select="riffdec"
2066 ogg_demuxer_select="golomb"
2067 psp_muxer_select="mov_muxer"
2068 rtp_demuxer_select="sdp_demuxer"
2069 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2070 rtsp_demuxer_select="http_protocol rtpdec"
2071 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2072 sap_demuxer_select="sdp_demuxer"
2073 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2074 sdp_demuxer_select="rtpdec"
2075 smoothstreaming_muxer_select="ismv_muxer"
2076 spdif_muxer_select="aac_parser"
2077 tak_demuxer_select="tak_parser"
2078 tg2_muxer_select="mov_muxer"
2079 tgp_muxer_select="mov_muxer"
2080 vobsub_demuxer_select="mpegps_demuxer"
2081 w64_demuxer_select="wav_demuxer"
2082 w64_muxer_select="wav_muxer"
2083 wav_demuxer_select="riffdec"
2084 wav_muxer_select="riffenc"
2085 webm_muxer_select="riffenc"
2086 wtv_demuxer_select="riffdec"
2087 xmv_demuxer_select="riffdec"
2088 xwma_demuxer_select="riffdec"
2089
2090 # indevs / outdevs
2091 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2092 alsa_outdev_deps="alsa_asoundlib_h"
2093 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2094 caca_outdev_deps="libcaca"
2095 dshow_indev_deps="IBaseFilter"
2096 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2097 dv1394_indev_deps="dv1394"
2098 dv1394_indev_select="dv_demuxer"
2099 fbdev_indev_deps="linux_fb_h"
2100 iec61883_indev_deps="libiec61883"
2101 jack_indev_deps="jack_jack_h sem_timedwait"
2102 lavfi_indev_deps="avfilter"
2103 libcdio_indev_deps="libcdio"
2104 libdc1394_indev_deps="libdc1394"
2105 libv4l2_indev_deps="libv4l2"
2106 openal_indev_deps="openal"
2107 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2108 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2109 pulse_indev_deps="libpulse"
2110 sdl_outdev_deps="sdl"
2111 sndio_indev_deps="sndio_h"
2112 sndio_outdev_deps="sndio_h"
2113 v4l_indev_deps="linux_videodev_h"
2114 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2115 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2116 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2117 vfwcap_indev_extralibs="-lavicap32"
2118 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2119 xv_outdev_extralibs="-lXv -lX11 -lXext"
2120 x11grab_indev_deps="x11grab"
2121
2122 # protocols
2123 bluray_protocol_deps="libbluray"
2124 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2125 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2126 ffrtmpcrypt_protocol_select="tcp_protocol"
2127 ffrtmphttp_protocol_deps="!librtmp_protocol"
2128 ffrtmphttp_protocol_select="http_protocol"
2129 ftp_protocol_select="tcp_protocol"
2130 gopher_protocol_select="network"
2131 httpproxy_protocol_select="tcp_protocol"
2132 http_protocol_select="tcp_protocol"
2133 https_protocol_select="tls_protocol"
2134 librtmp_protocol_deps="librtmp"
2135 librtmpe_protocol_deps="librtmp"
2136 librtmps_protocol_deps="librtmp"
2137 librtmpt_protocol_deps="librtmp"
2138 librtmpte_protocol_deps="librtmp"
2139 mmsh_protocol_select="http_protocol"
2140 mmst_protocol_select="network"
2141 rtmp_protocol_deps="!librtmp_protocol"
2142 rtmp_protocol_select="tcp_protocol"
2143 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2144 rtmps_protocol_deps="!librtmp_protocol"
2145 rtmps_protocol_select="tls_protocol"
2146 rtmpt_protocol_select="ffrtmphttp_protocol"
2147 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2148 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2149 rtp_protocol_select="udp_protocol"
2150 sctp_protocol_deps="struct_sctp_event_subscribe"
2151 sctp_protocol_select="network"
2152 srtp_protocol_select="rtp_protocol"
2153 tcp_protocol_select="network"
2154 tls_protocol_deps_any="openssl gnutls"
2155 tls_protocol_select="tcp_protocol"
2156 udp_protocol_select="network"
2157 unix_protocol_deps="sys_un_h"
2158 unix_protocol_select="network"
2159
2160 # filters
2161 aconvert_filter_deps="swresample"
2162 amovie_filter_deps="avcodec avformat"
2163 aresample_filter_deps="swresample"
2164 ass_filter_deps="libass"
2165 asyncts_filter_deps="avresample"
2166 atempo_filter_deps="avcodec rdft"
2167 azmq_filter_deps="libzmq"
2168 blackframe_filter_deps="gpl"
2169 boxblur_filter_deps="gpl"
2170 colormatrix_filter_deps="gpl"
2171 cropdetect_filter_deps="gpl"
2172 dctdnoiz_filter_deps="avcodec fft"
2173 delogo_filter_deps="gpl"
2174 deshake_filter_deps="avcodec"
2175 deshake_filter_select="dsputil"
2176 drawtext_filter_deps="libfreetype"
2177 ebur128_filter_deps="gpl"
2178 flite_filter_deps="libflite"
2179 frei0r_filter_deps="frei0r dlopen"
2180 frei0r_filter_extralibs='$ldl'
2181 frei0r_src_filter_deps="frei0r dlopen"
2182 frei0r_src_filter_extralibs='$ldl'
2183 geq_filter_deps="gpl"
2184 histeq_filter_deps="gpl"
2185 hqdn3d_filter_deps="gpl"
2186 hue_filter_deps="gpl"
2187 interlace_filter_deps="gpl"
2188 kerndeint_filter_deps="gpl"
2189 mcdeint_filter_deps="avcodec gpl"
2190 movie_filter_deps="avcodec avformat"
2191 mp_filter_deps="gpl avcodec swscale inline_asm"
2192 mpdecimate_filter_deps="gpl avcodec"
2193 mptestsrc_filter_deps="gpl"
2194 negate_filter_deps="lut_filter"
2195 noise_filter_deps="gpl"
2196 perspective_filter_deps="gpl"
2197 resample_filter_deps="avresample"
2198 ocv_filter_deps="libopencv"
2199 owdenoise_filter_deps="gpl"
2200 pan_filter_deps="swresample"
2201 pp_filter_deps="gpl postproc"
2202 removelogo_filter_deps="avcodec avformat swscale"
2203 sab_filter_deps="gpl swscale"
2204 scale_filter_deps="swscale"
2205 smartblur_filter_deps="gpl swscale"
2206 showspectrum_filter_deps="avcodec rdft"
2207 spp_filter_deps="gpl avcodec fft"
2208 stereo3d_filter_deps="gpl"
2209 subtitles_filter_deps="avformat avcodec libass"
2210 super2xsai_filter_deps="gpl"
2211 tinterlace_filter_deps="gpl"
2212 vidstabdetect_filter_deps="libvidstab"
2213 vidstabtransform_filter_deps="libvidstab"
2214 yadif_filter_deps="gpl"
2215 pixfmts_super2xsai_test_deps="super2xsai_filter"
2216 tinterlace_merge_test_deps="tinterlace_filter"
2217 tinterlace_pad_test_deps="tinterlace_filter"
2218 zmq_filter_deps="libzmq"
2219
2220 # libraries
2221 avcodec_deps="avutil"
2222 avdevice_deps="avutil avcodec avformat"
2223 avfilter_deps="avutil"
2224 avformat_deps="avutil avcodec"
2225 avresample_deps="avutil"
2226 postproc_deps="avutil gpl"
2227 swscale_deps="avutil"
2228
2229 # programs
2230 ffmpeg_deps="avcodec avfilter avformat swscale swresample"
2231 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2232                null_filter
2233                setpts_filter trim_filter"
2234 ffplay_deps="avcodec avformat swscale swresample sdl"
2235 ffplay_select="rdft crop_filter"
2236 ffprobe_deps="avcodec avformat"
2237 ffserver_deps="avformat fork sarestart"
2238 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2239 ffserver_extralibs='$ldl'
2240
2241 # documentation
2242 podpages_deps="perl"
2243 manpages_deps="perl pod2man"
2244 htmlpages_deps="texi2html"
2245 txtpages_deps="makeinfo"
2246 doc_deps_any="manpages htmlpages podpages txtpages"
2247
2248 # default parameters
2249
2250 logfile="config.log"
2251
2252 # installation paths
2253 prefix_default="/usr/local"
2254 bindir_default='${prefix}/bin'
2255 datadir_default='${prefix}/share/ffmpeg'
2256 incdir_default='${prefix}/include'
2257 libdir_default='${prefix}/lib'
2258 mandir_default='${prefix}/share/man'
2259 shlibdir_default="$libdir_default"
2260
2261 # toolchain
2262 ar_default="ar"
2263 cc_default="gcc"
2264 cxx_default="g++"
2265 host_cc_default="gcc"
2266 cp_f="cp -f"
2267 install="install"
2268 ln_s="ln -s -f"
2269 nm_default="nm -g"
2270 objformat="elf"
2271 pkg_config_default=pkg-config
2272 ranlib="ranlib"
2273 strip_default="strip"
2274 yasmexe_default="yasm"
2275
2276 nogas=":"
2277
2278 # machine
2279 arch_default=$(uname -m)
2280 cpu="generic"
2281
2282 # OS
2283 target_os_default=$(tolower $(uname -s))
2284 host_os=$target_os_default
2285
2286 # configurable options
2287 enable $PROGRAM_LIST
2288 enable $DOCUMENT_LIST
2289 enable $(filter_out avresample $LIBRARY_LIST)
2290 enable stripping
2291
2292 enable asm
2293 enable debug
2294 enable doc
2295 enable optimizations
2296 enable runtime_cpudetect
2297 enable safe_bitstream_reader
2298 enable static
2299 enable swscale_alpha
2300
2301 # Enable hwaccels by default.
2302 enable dxva2 vaapi vdpau
2303
2304 # build settings
2305 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2306 LIBPREF="lib"
2307 LIBSUF=".a"
2308 FULLNAME='$(NAME)$(BUILDSUF)'
2309 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2310 SLIBPREF="lib"
2311 SLIBSUF=".so"
2312 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2313 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2314 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2315 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2316 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2317 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2318
2319 asflags_filter=echo
2320 cflags_filter=echo
2321 ldflags_filter=echo
2322
2323 AS_C='-c'
2324 AS_O='-o $@'
2325 CC_C='-c'
2326 CC_E='-E -o $@'
2327 CC_O='-o $@'
2328 CXX_C='-c'
2329 CXX_O='-o $@'
2330 LD_O='-o $@'
2331 LD_LIB='-l%'
2332 LD_PATH='-L'
2333 HOSTCC_C='-c'
2334 HOSTCC_O='-o $@'
2335 HOSTLD_O='-o $@'
2336
2337 host_cflags='-O3 -g'
2338 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
2339 host_libs='-lm'
2340 host_cflags_filter=echo
2341 host_ldflags_filter=echo
2342
2343 target_path='$(CURDIR)'
2344
2345 # since the object filename is not given with the -MM flag, the compiler
2346 # is only able to print the basename, and we must add the path ourselves
2347 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2348 DEPFLAGS='-MM'
2349
2350 # find source path
2351 if test -f configure; then
2352     source_path=.
2353 else
2354     source_path=$(cd $(dirname "$0"); pwd)
2355     echo "$source_path" | grep -q '[[:blank:]]' &&
2356         die "Out of tree builds are impossible with whitespace in source path."
2357     test -e "$source_path/config.h" &&
2358         die "Out of tree builds are impossible with config.h in source dir."
2359 fi
2360
2361 for v in "$@"; do
2362     r=${v#*=}
2363     l=${v%"$r"}
2364     r=$(sh_quote "$r")
2365     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2366 done
2367
2368 find_things(){
2369     thing=$1
2370     pattern=$2
2371     file=$source_path/$3
2372     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2373 }
2374
2375 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2376 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2377 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2378 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2379 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2380 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2381 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2382 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2383 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2384 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2385 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2386
2387 ALL_COMPONENTS="
2388     $BSF_LIST
2389     $DECODER_LIST
2390     $DEMUXER_LIST
2391     $ENCODER_LIST
2392     $FILTER_LIST
2393     $HWACCEL_LIST
2394     $INDEV_LIST
2395     $MUXER_LIST
2396     $OUTDEV_LIST
2397     $PARSER_LIST
2398     $PROTOCOL_LIST
2399 "
2400
2401 for n in $COMPONENT_LIST; do
2402     v=$(toupper ${n%s})_LIST
2403     eval enable \$$v
2404     eval ${n}_if_any="\$$v"
2405 done
2406
2407 enable $ARCH_EXT_LIST
2408
2409 die_unknown(){
2410     echo "Unknown option \"$1\"."
2411     echo "See $0 --help for available options."
2412     exit 1
2413 }
2414
2415 print_3_columns() {
2416     cat | tr ' ' '\n' | sort | pr -r -3 -t
2417 }
2418
2419 show_list() {
2420     suffix=_$1
2421     shift
2422     echo $* | sed s/$suffix//g | print_3_columns
2423     exit 0
2424 }
2425
2426 rand_list(){
2427     IFS=', '
2428     set -- $*
2429     unset IFS
2430     for thing; do
2431         comp=${thing%:*}
2432         prob=${thing#$comp}
2433         prob=${prob#:}
2434         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2435         echo "prob ${prob:-0.5}"
2436         printf '%s\n' $comp
2437     done
2438 }
2439
2440 do_random(){
2441     action=$1
2442     shift
2443     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2444     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2445 }
2446
2447 for opt do
2448     optval="${opt#*=}"
2449     case "$opt" in
2450         --extra-ldflags=*)
2451             add_ldflags $optval
2452         ;;
2453         --extra-libs=*)
2454             add_extralibs $optval
2455         ;;
2456         --disable-devices)
2457             disable $INDEV_LIST $OUTDEV_LIST
2458         ;;
2459         --enable-debug=*)
2460             debuglevel="$optval"
2461         ;;
2462         --disable-programs)
2463             disable $PROGRAM_LIST
2464         ;;
2465         --disable-everything)
2466             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2467         ;;
2468         --disable-all)
2469             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2470             disable $LIBRARY_LIST $PROGRAM_LIST doc
2471         ;;
2472         --enable-random|--disable-random)
2473             action=${opt%%-random}
2474             do_random ${action#--} $COMPONENT_LIST
2475         ;;
2476         --enable-random=*|--disable-random=*)
2477             action=${opt%%-random=*}
2478             do_random ${action#--} $optval
2479         ;;
2480         --enable-*=*|--disable-*=*)
2481             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2482             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2483             eval list=\$$(toupper $thing)_LIST
2484             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2485             list=$(filter "$name" $list)
2486             [ "$list" = "" ] && warn "Option $opt did not match anything"
2487             $action $list
2488         ;;
2489         --enable-?*|--disable-?*)
2490             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2491             if is_in $option $COMPONENT_LIST; then
2492                 test $action = disable && action=unset
2493                 eval $action \$$(toupper ${option%s})_LIST
2494             elif is_in $option $CMDLINE_SELECT; then
2495                 $action $option
2496             else
2497                 die_unknown $opt
2498             fi
2499         ;;
2500         --list-*)
2501             NAME="${opt#--list-}"
2502             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2503             NAME=${NAME%s}
2504             eval show_list $NAME \$$(toupper $NAME)_LIST
2505         ;;
2506         --help|-h) show_help
2507         ;;
2508         --fatal-warnings) enable fatal_warnings
2509         ;;
2510         *)
2511             optname="${opt%%=*}"
2512             optname="${optname#--}"
2513             optname=$(echo "$optname" | sed 's/-/_/g')
2514             if is_in $optname $CMDLINE_SET; then
2515                 eval $optname='$optval'
2516             elif is_in $optname $CMDLINE_APPEND; then
2517                 append $optname "$optval"
2518             else
2519                 die_unknown $opt
2520             fi
2521         ;;
2522     esac
2523 done
2524
2525 disabled logging && logfile=/dev/null
2526
2527 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2528 set >> $logfile
2529
2530 test -n "$cross_prefix" && enable cross_compile
2531
2532 if enabled cross_compile; then
2533     test -n "$arch" && test -n "$target_os" ||
2534         die "Must specify target arch and OS when cross-compiling"
2535 fi
2536
2537 ar_default="${cross_prefix}${ar_default}"
2538 cc_default="${cross_prefix}${cc_default}"
2539 cxx_default="${cross_prefix}${cxx_default}"
2540 nm_default="${cross_prefix}${nm_default}"
2541 pkg_config_default="${cross_prefix}${pkg_config_default}"
2542 ranlib="${cross_prefix}${ranlib}"
2543 strip_default="${cross_prefix}${strip_default}"
2544
2545 sysinclude_default="${sysroot}/usr/include"
2546
2547 test -n "$valgrind" && toolchain="valgrind-memcheck"
2548
2549 case "$toolchain" in
2550     clang-asan)
2551         cc_default="clang"
2552         add_cflags  -fsanitize=address
2553         add_ldflags -fsanitize=address
2554     ;;
2555     clang-tsan)
2556         cc_default="clang"
2557         add_cflags  -fsanitize=thread -pie
2558         add_ldflags -fsanitize=thread -pie
2559     ;;
2560     gcc-asan)
2561         cc_default="gcc"
2562         add_cflags  -fsanitize=address
2563         add_ldflags -fsanitize=address
2564     ;;
2565     gcc-tsan)
2566         cc_default="gcc"
2567         add_cflags  -fsanitize=thread -pie -fPIC
2568         add_ldflags -fsanitize=thread -pie -fPIC
2569     ;;
2570     valgrind-massif)
2571         target_exec_default=${valgrind:-"valgrind"}
2572         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"
2573     ;;
2574     valgrind-memcheck)
2575         target_exec_default=${valgrind:-"valgrind"}
2576         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2577     ;;
2578     msvc)
2579         cc_default="c99wrap cl"
2580         ld_default="c99wrap link"
2581         nm_default="dumpbin -symbols"
2582         ar_default="lib"
2583         target_os_default="win32"
2584     ;;
2585     icl)
2586         cc_default="c99wrap -noconv icl"
2587         ld_default="c99wrap xilink"
2588         nm_default="dumpbin -symbols"
2589         ar_default="xilib"
2590         target_os_default="win32"
2591     ;;
2592     gcov)
2593         add_cflags  -fprofile-arcs -ftest-coverage
2594         add_ldflags -fprofile-arcs -ftest-coverage
2595     ;;
2596     ?*)
2597         die "Unknown toolchain $toolchain"
2598     ;;
2599 esac
2600
2601 set_default arch cc cxx pkg_config strip sysinclude target_exec target_os yasmexe
2602 enabled cross_compile || host_cc_default=$cc
2603 set_default host_cc
2604
2605 if ! $pkg_config --version >/dev/null 2>&1; then
2606     warn "$pkg_config not found, library detection may fail."
2607     pkg_config=false
2608 fi
2609
2610 exesuf() {
2611     case $1 in
2612         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2613     esac
2614 }
2615
2616 EXESUF=$(exesuf $target_os)
2617 HOSTEXESUF=$(exesuf $host_os)
2618
2619 # set temporary file name
2620 : ${TMPDIR:=$TEMPDIR}
2621 : ${TMPDIR:=$TMP}
2622 : ${TMPDIR:=/tmp}
2623
2624 if ! check_cmd mktemp -u XXXXXX; then
2625     # simple replacement for missing mktemp
2626     # NOT SAFE FOR GENERAL USE
2627     mktemp(){
2628         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2629     }
2630 fi
2631
2632 tmpfile(){
2633     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2634         (set -C; exec > $tmp) 2>/dev/null ||
2635         die "Unable to create temporary file in $TMPDIR."
2636     append TMPFILES $tmp
2637     eval $1=$tmp
2638 }
2639
2640 trap 'rm -f -- $TMPFILES' EXIT
2641
2642 tmpfile TMPASM .asm
2643 tmpfile TMPC   .c
2644 tmpfile TMPCPP .cpp
2645 tmpfile TMPE   $EXESUF
2646 tmpfile TMPH   .h
2647 tmpfile TMPO   .o
2648 tmpfile TMPS   .S
2649 tmpfile TMPSH  .sh
2650 tmpfile TMPV   .ver
2651
2652 unset -f mktemp
2653
2654 chmod +x $TMPE
2655
2656 # make sure we can execute files in $TMPDIR
2657 cat > $TMPSH 2>> $logfile <<EOF
2658 #! /bin/sh
2659 EOF
2660 chmod +x $TMPSH >> $logfile 2>&1
2661 if ! $TMPSH >> $logfile 2>&1; then
2662     cat <<EOF
2663 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2664 variable to another directory and make sure that it is not mounted noexec.
2665 EOF
2666     die "Sanity test failed."
2667 fi
2668
2669 ccc_flags(){
2670     for flag; do
2671         case $flag in
2672             -std=c99)           echo -c99                       ;;
2673             -mcpu=*)            echo -arch ${flag#*=}           ;;
2674             -mieee)             echo -ieee                      ;;
2675             -O*|-fast)          echo $flag                      ;;
2676             -fno-math-errno)    echo -assume nomath_errno       ;;
2677             -g)                 echo -g3                        ;;
2678             -Wall)              echo -msg_enable level2         ;;
2679             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2680             -Wl,*)              echo $flag                      ;;
2681             -f*|-W*)                                            ;;
2682             *)                  echo $flag                      ;;
2683         esac
2684    done
2685 }
2686
2687 msvc_common_flags(){
2688     for flag; do
2689         case $flag in
2690             # In addition to specifying certain flags under the compiler
2691             # specific filters, they must be specified here as well or else the
2692             # generic catch all at the bottom will print the original flag.
2693             -Wall)                ;;
2694             -std=c99)             ;;
2695             # Common flags
2696             -fomit-frame-pointer) ;;
2697             -g)                   echo -Z7 ;;
2698             -fno-math-errno)      ;;
2699             -fno-common)          ;;
2700             -fno-signed-zeros)    ;;
2701             -fPIC)                ;;
2702             -mthumb)              ;;
2703             -march=*)             ;;
2704             -lz)                  echo zlib.lib ;;
2705             -lavifil32)           echo vfw32.lib ;;
2706             -lavicap32)           echo vfw32.lib user32.lib ;;
2707             -l*)                  echo ${flag#-l}.lib ;;
2708             *)                    echo $flag ;;
2709         esac
2710     done
2711 }
2712
2713 msvc_flags(){
2714     msvc_common_flags "$@"
2715     for flag; do
2716         case $flag in
2717             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2718                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2719                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2720                                        -wd4554 \
2721                                        -wd4996 -wd4273 ;;
2722         esac
2723     done
2724 }
2725
2726 icl_flags(){
2727     msvc_common_flags "$@"
2728     for flag; do
2729         case $flag in
2730             # Despite what Intel's documentation says -Wall, which is supported
2731             # on Windows, does enable remarks so disable them here.
2732             -Wall)                echo $flag -Qdiag-disable:remark ;;
2733             -std=c99)             echo -Qstd=c99 ;;
2734         esac
2735     done
2736 }
2737
2738 pgi_flags(){
2739     for flag; do
2740         case $flag in
2741             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2742             -fomit-frame-pointer) echo -Mnoframe ;;
2743             -g)                   echo -gopt ;;
2744             *)                    echo $flag ;;
2745         esac
2746     done
2747 }
2748
2749 suncc_flags(){
2750     for flag; do
2751         case $flag in
2752             -march=*|-mcpu=*)
2753                 case "${flag#*=}" in
2754                     native)                   echo -xtarget=native       ;;
2755                     v9|niagara)               echo -xarch=sparc          ;;
2756                     ultrasparc)               echo -xarch=sparcvis       ;;
2757                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2758                     i586|pentium)             echo -xchip=pentium        ;;
2759                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2760                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2761                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2762                     pentium4*)          echo -xtarget=pentium4           ;;
2763                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2764                     *-sse3)             echo -xarch=sse3                 ;;
2765                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2766                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2767                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2768                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
2769                     bdver*)                    echo -xarch=avx           ;;
2770                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2771                     k8|opteron|athlon64|athlon-fx)
2772                                                echo -xarch=sse2a         ;;
2773                     athlon*)                   echo -xarch=pentium_proa  ;;
2774                 esac
2775                 ;;
2776             -std=c99)             echo -xc99              ;;
2777             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2778             -fPIC)                echo -KPIC -xcode=pic32 ;;
2779             -W*,*)                echo $flag              ;;
2780             -f*-*|-W*|-mimpure-text)                      ;;
2781             -shared)              echo -G                 ;;
2782             *)                    echo $flag              ;;
2783         esac
2784     done
2785 }
2786
2787 tms470_flags(){
2788     for flag; do
2789         case $flag in
2790             -march=*|-mcpu=*)
2791                 case "${flag#*=}" in
2792                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2793                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2794                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2795                     armv6*|arm11*)          echo -mv=6   ;;
2796                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2797                                             echo -mv=5e  ;;
2798                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2799                 esac
2800                 ;;
2801             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2802             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2803             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2804             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2805             -msoft-float)   echo --float_support=vfplib       ;;
2806             -O[0-3]|-mf=*)  echo $flag                        ;;
2807             -g)             echo -g -mn                       ;;
2808             -pds=*)         echo $flag                        ;;
2809             -D*|-I*)        echo $flag                        ;;
2810             --gcc|--abi=*)  echo $flag                        ;;
2811             -me)            echo $flag                        ;;
2812         esac
2813     done
2814 }
2815
2816 probe_cc(){
2817     pfx=$1
2818     _cc=$2
2819
2820     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2821     unset _ld_o _ldflags _ld_lib _ld_path
2822     unset _depflags _DEPCMD _DEPFLAGS
2823     _flags_filter=echo
2824
2825     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2826         _type=llvm_gcc
2827         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2828         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2829         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2830         _cflags_speed='-O3'
2831         _cflags_size='-Os'
2832     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2833         _type=gcc
2834         gcc_version=$($_cc --version | head -n1)
2835         gcc_basever=$($_cc -dumpversion)
2836         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2837         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2838         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2839         if ! $_cc -dumpversion | grep -q '^2\.'; then
2840             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2841         fi
2842         _cflags_speed='-O3'
2843         _cflags_size='-Os'
2844     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2845         _type=icc
2846         _ident=$($_cc --version | head -n1)
2847         _depflags='-MMD'
2848         _cflags_speed='-O3'
2849         _cflags_size='-Os'
2850         _cflags_noopt='-O1'
2851     elif $_cc -v 2>&1 | grep -q xlc; then
2852         _type=xlc
2853         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2854         _cflags_speed='-O5'
2855         _cflags_size='-O5 -qcompact'
2856     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2857         _type=ccc
2858         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2859         _DEPFLAGS='-M'
2860         _cflags_speed='-fast'
2861         _cflags_size='-O1'
2862         _flags_filter=ccc_flags
2863     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2864         test -d "$sysroot" || die "No valid sysroot specified."
2865         _type=armcc
2866         _ident=$($_cc --vsn | head -n1)
2867         armcc_conf="$PWD/armcc.conf"
2868         $_cc --arm_linux_configure                 \
2869              --arm_linux_config_file="$armcc_conf" \
2870              --configure_sysroot="$sysroot"        \
2871              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2872              die "Error creating armcc configuration file."
2873         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2874         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2875         as_default="${cross_prefix}gcc"
2876         _depflags='-MMD'
2877         _cflags_speed='-O3'
2878         _cflags_size='-Os'
2879     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2880         _type=tms470
2881         _ident=$($_cc -version | head -n1 | tr -s ' ')
2882         _flags='--gcc --abi=eabi -me'
2883         _cc_e='-ppl -fe=$@'
2884         _cc_o='-fe=$@'
2885         _depflags='-ppa -ppd=$(@:.o=.d)'
2886         _cflags_speed='-O3 -mf=5'
2887         _cflags_size='-O3 -mf=2'
2888         _flags_filter=tms470_flags
2889     elif $_cc -v 2>&1 | grep -q clang; then
2890         _type=clang
2891         _ident=$($_cc --version | head -n1)
2892         _depflags='-MMD'
2893         _cflags_speed='-O3'
2894         _cflags_size='-Os'
2895     elif $_cc -V 2>&1 | grep -q Sun; then
2896         _type=suncc
2897         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2898         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2899         _DEPFLAGS='-xM1 -xc99'
2900         _ldflags='-std=c99'
2901         _cflags_speed='-O5'
2902         _cflags_size='-O5 -xspace'
2903         _flags_filter=suncc_flags
2904     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2905         _type=pathscale
2906         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2907         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2908         _cflags_speed='-O2'
2909         _cflags_size='-Os'
2910         _flags_filter='filter_out -Wdisabled-optimization'
2911     elif $_cc -v 2>&1 | grep -q Open64; then
2912         _type=open64
2913         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2914         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2915         _cflags_speed='-O2'
2916         _cflags_size='-Os'
2917         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2918     elif $_cc -V 2>&1 | grep -q Portland; then
2919         _type=pgi
2920         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2921         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2922         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2923         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2924         _cflags_noopt="-O"
2925         _flags_filter=pgi_flags
2926     elif $_cc 2>&1 | grep -q Microsoft; then
2927         _type=msvc
2928         _ident=$($cc 2>&1 | head -n1)
2929         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2930         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2931         _cflags_speed="-O2"
2932         _cflags_size="-O1"
2933         # Nonstandard output options, to avoid msys path conversion issues.
2934         # Relies on wrapper to remap it.
2935         if $_cc 2>&1 | grep -q Linker; then
2936             _ld_o='-out $@'
2937         else
2938             _ld_o='-Fe$@'
2939         fi
2940         _cc_o='-Fo $@'
2941         _cc_e='-P -Fi $@'
2942         _flags_filter=msvc_flags
2943         _ld_lib='lib%.a'
2944         _ld_path='-libpath:'
2945         _flags='-nologo'
2946         _cflags='-D_USE_MATH_DEFINES -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2947         if [ $pfx = hostcc ]; then
2948             append _cflags -Dsnprintf=_snprintf
2949         fi
2950         disable stripping
2951     elif $_cc 2>&1 | grep -q Intel; then
2952         _type=icl
2953         _ident=$($cc 2>&1 | head -n1)
2954         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2955         # Not only is O3 broken on 13.x+ but it is slower on all previous
2956         # versions (tested) as well.
2957         _cflags_speed="-O2"
2958         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2959         # Nonstandard output options, to avoid msys path conversion issues.
2960         # Relies on wrapper to remap it.
2961         if $_cc 2>&1 | grep -q Linker; then
2962             _ld_o='-out $@'
2963         else
2964             _ld_o='-Fe$@'
2965         fi
2966         _cc_o='-Fo $@'
2967         _cc_e='-P'
2968         _flags_filter=icl_flags
2969         _ld_lib='lib%.a'
2970         _ld_path='-libpath:'
2971         # -Qdiag-error to make icl error when seeing certain unknown arguments
2972         _flags='-nologo -Qdiag-error:4044,10157'
2973         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2974         # with MSVC which enables it by default.
2975         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2976         if [ $pfx = hostcc ]; then
2977             append _cflags -Dsnprintf=_snprintf
2978         fi
2979     fi
2980
2981     eval ${pfx}_type=\$_type
2982     eval ${pfx}_ident=\$_ident
2983 }
2984
2985 set_ccvars(){
2986     eval ${1}_C=\${_cc_c-\${${1}_C}}
2987     eval ${1}_E=\${_cc_e-\${${1}_E}}
2988     eval ${1}_O=\${_cc_o-\${${1}_O}}
2989
2990     if [ -n "$_depflags" ]; then
2991         eval ${1}_DEPFLAGS=\$_depflags
2992     else
2993         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2994         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2995         eval DEP${1}FLAGS=\$_flags
2996     fi
2997 }
2998
2999 probe_cc cc "$cc"
3000 cflags_filter=$_flags_filter
3001 cflags_speed=$_cflags_speed
3002 cflags_size=$_cflags_size
3003 cflags_noopt=$_cflags_noopt
3004 add_cflags $_flags $_cflags
3005 cc_ldflags=$_ldflags
3006 set_ccvars CC
3007
3008 probe_cc hostcc "$host_cc"
3009 host_cflags_filter=$_flags_filter
3010 add_host_cflags  $_flags $_cflags
3011 set_ccvars HOSTCC
3012
3013 test -n "$cc_type" && enable $cc_type ||
3014     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3015
3016 : ${as_default:=$cc}
3017 : ${dep_cc_default:=$cc}
3018 : ${ld_default:=$cc}
3019 : ${host_ld_default:=$host_cc}
3020 set_default ar as dep_cc ld host_ld
3021
3022 probe_cc as "$as"
3023 asflags_filter=$_flags_filter
3024 add_asflags $_flags $_cflags
3025 set_ccvars AS
3026
3027 probe_cc ld "$ld"
3028 ldflags_filter=$_flags_filter
3029 add_ldflags $_flags $_ldflags
3030 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3031 LD_O=${_ld_o-$LD_O}
3032 LD_LIB=${_ld_lib-$LD_LIB}
3033 LD_PATH=${_ld_path-$LD_PATH}
3034
3035 probe_cc hostld "$host_ld"
3036 host_ldflags_filter=$_flags_filter
3037 add_host_ldflags $_flags $_ldflags
3038 HOSTLD_O=${_ld_o-$HOSTLD_O}
3039
3040 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3041     probe_cc depcc "$dep_cc"
3042     CCDEP=${_DEPCMD:-$DEPCMD}
3043     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3044     DEPCCFLAGS=$_flags
3045 fi
3046
3047 if $ar 2>&1 | grep -q Microsoft; then
3048     arflags="-nologo"
3049     ar_o='-out:$@'
3050 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3051     arflags="rq"
3052     ar_o='$@'
3053 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3054     arflags='-Xany -r -c'
3055     ar_o='$@'
3056 else
3057     arflags="rc"
3058     ar_o='$@'
3059 fi
3060
3061 add_cflags $extra_cflags
3062 add_cxxflags $extra_cxxflags
3063 add_asflags $extra_cflags
3064
3065 if test -n "$sysroot"; then
3066     case "$cc_type" in
3067         gcc|llvm_gcc|clang)
3068             add_cppflags --sysroot="$sysroot"
3069             add_ldflags --sysroot="$sysroot"
3070         ;;
3071         tms470)
3072             add_cppflags -I"$sysinclude"
3073             add_ldflags  --sysroot="$sysroot"
3074         ;;
3075     esac
3076 fi
3077
3078 if test "$cpu" = host; then
3079     enabled cross_compile &&
3080         die "--cpu=host makes no sense when cross-compiling."
3081
3082     case "$cc_type" in
3083         gcc|llvm_gcc)
3084             check_native(){
3085                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3086                 sed -n "/cc1.*$1=/{
3087                             s/.*$1=\\([^ ]*\\).*/\\1/
3088                             p
3089                             q
3090                         }" $TMPE
3091             }
3092             cpu=$(check_native -march || check_native -mcpu)
3093         ;;
3094     esac
3095
3096     test "${cpu:-host}" = host &&
3097         die "--cpu=host not supported with compiler $cc"
3098 fi
3099
3100 # Deal with common $arch aliases
3101 case "$arch" in
3102     aarch64|arm64)
3103         arch="aarch64"
3104     ;;
3105     arm*|iPad*|iPhone*)
3106         arch="arm"
3107     ;;
3108     mips*|IP*)
3109         arch="mips"
3110     ;;
3111     parisc*|hppa*)
3112         arch="parisc"
3113     ;;
3114     "Power Macintosh"|ppc*|powerpc*)
3115         arch="ppc"
3116     ;;
3117     s390|s390x)
3118         arch="s390"
3119     ;;
3120     sh4|sh)
3121         arch="sh4"
3122     ;;
3123     sun4u|sparc*)
3124         arch="sparc"
3125     ;;
3126     tilegx|tile-gx)
3127         arch="tilegx"
3128     ;;
3129     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3130         arch="x86"
3131     ;;
3132 esac
3133
3134 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3135 enable $arch
3136
3137 # Add processor-specific flags
3138 if enabled aarch64; then
3139
3140     case $cpu in
3141         armv*)
3142             cpuflags="-march=$cpu"
3143         ;;
3144         *)
3145             cpuflags="-mcpu=$cpu"
3146         ;;
3147     esac
3148
3149 elif enabled alpha; then
3150
3151     cpuflags="-mcpu=$cpu"
3152
3153 elif enabled arm; then
3154
3155     check_arm_arch() {
3156         check_cpp_condition stddef.h \
3157             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3158             $cpuflags
3159     }
3160
3161     probe_arm_arch() {
3162         if   check_arm_arch 4;        then echo armv4;
3163         elif check_arm_arch 4T;       then echo armv4t;
3164         elif check_arm_arch 5;        then echo armv5;
3165         elif check_arm_arch 5E;       then echo armv5e;
3166         elif check_arm_arch 5T;       then echo armv5t;
3167         elif check_arm_arch 5TE;      then echo armv5te;
3168         elif check_arm_arch 5TEJ;     then echo armv5te;
3169         elif check_arm_arch 6;        then echo armv6;
3170         elif check_arm_arch 6J;       then echo armv6j;
3171         elif check_arm_arch 6K;       then echo armv6k;
3172         elif check_arm_arch 6Z;       then echo armv6z;
3173         elif check_arm_arch 6ZK;      then echo armv6zk;
3174         elif check_arm_arch 6T2;      then echo armv6t2;
3175         elif check_arm_arch 7;        then echo armv7;
3176         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3177         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3178         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3179         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3180         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3181         fi
3182     }
3183
3184     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3185
3186     case $cpu in
3187         armv*)
3188             cpuflags="-march=$cpu"
3189             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3190         ;;
3191         *)
3192             cpuflags="-mcpu=$cpu"
3193             case $cpu in
3194                 cortex-a*)                               subarch=armv7a  ;;
3195                 cortex-r*)                               subarch=armv7r  ;;
3196                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3197                 arm11*)                                  subarch=armv6   ;;
3198                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3199                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3200                 *)                             subarch=$(probe_arm_arch) ;;
3201             esac
3202         ;;
3203     esac
3204
3205     case "$subarch" in
3206         armv5t*)    enable fast_clz                ;;
3207         armv[6-8]*) enable fast_clz fast_unaligned ;;
3208     esac
3209
3210 elif enabled avr32; then
3211
3212     case $cpu in
3213         ap7[02]0[0-2])
3214             subarch="avr32_ap"
3215             cpuflags="-mpart=$cpu"
3216         ;;
3217         ap)
3218             subarch="avr32_ap"
3219             cpuflags="-march=$cpu"
3220         ;;
3221         uc3[ab]*)
3222             subarch="avr32_uc"
3223             cpuflags="-mcpu=$cpu"
3224         ;;
3225         uc)
3226             subarch="avr32_uc"
3227             cpuflags="-march=$cpu"
3228         ;;
3229     esac
3230
3231 elif enabled bfin; then
3232
3233     cpuflags="-mcpu=$cpu"
3234
3235 elif enabled mips; then
3236
3237     cpuflags="-march=$cpu"
3238
3239     case $cpu in
3240         24kc)
3241             disable mipsfpu
3242             disable mipsdspr1
3243             disable mipsdspr2
3244         ;;
3245         24kf*)
3246             disable mipsdspr1
3247             disable mipsdspr2
3248         ;;
3249         24kec|34kc|1004kc)
3250             disable mipsfpu
3251             disable mipsdspr2
3252         ;;
3253         24kef*|34kf*|1004kf*)
3254             disable mipsdspr2
3255         ;;
3256         74kc)
3257             disable mipsfpu
3258         ;;
3259     esac
3260
3261 elif enabled ppc; then
3262
3263     case $(tolower $cpu) in
3264         601|ppc601|powerpc601)
3265             cpuflags="-mcpu=601"
3266             disable altivec
3267         ;;
3268         603*|ppc603*|powerpc603*)
3269             cpuflags="-mcpu=603"
3270             disable altivec
3271         ;;
3272         604*|ppc604*|powerpc604*)
3273             cpuflags="-mcpu=604"
3274             disable altivec
3275         ;;
3276         g3|75*|ppc75*|powerpc75*)
3277             cpuflags="-mcpu=750"
3278             disable altivec
3279         ;;
3280         g4|745*|ppc745*|powerpc745*)
3281             cpuflags="-mcpu=7450"
3282         ;;
3283         74*|ppc74*|powerpc74*)
3284             cpuflags="-mcpu=7400"
3285         ;;
3286         g5|970|ppc970|powerpc970)
3287             cpuflags="-mcpu=970"
3288         ;;
3289         power[3-7]*)
3290             cpuflags="-mcpu=$cpu"
3291         ;;
3292         cell)
3293             cpuflags="-mcpu=cell"
3294             enable ldbrx
3295         ;;
3296         e500mc)
3297             cpuflags="-mcpu=e500mc"
3298             disable altivec
3299         ;;
3300         e500v2)
3301             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3302             disable altivec
3303         ;;
3304         e500)
3305             cpuflags="-mcpu=8540 -mhard-float"
3306             disable altivec
3307         ;;
3308     esac
3309
3310 elif enabled sparc; then
3311
3312     case $cpu in
3313         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3314             cpuflags="-mcpu=$cpu"
3315             disable vis
3316         ;;
3317         ultrasparc*|niagara[234])
3318             cpuflags="-mcpu=$cpu"
3319         ;;
3320     esac
3321
3322 elif enabled x86; then
3323
3324     case $cpu in
3325         i[345]86|pentium)
3326             cpuflags="-march=$cpu"
3327             disable mmx
3328         ;;
3329         # targets that do NOT support nopl and conditional mov (cmov)
3330         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3331             cpuflags="-march=$cpu"
3332             disable i686
3333         ;;
3334         # targets that do support nopl and conditional mov (cmov)
3335         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3336             cpuflags="-march=$cpu"
3337             enable i686
3338             enable fast_cmov
3339         ;;
3340         # targets that do support conditional mov but on which it's slow
3341         pentium4|pentium4m|prescott|nocona)
3342             cpuflags="-march=$cpu"
3343             enable i686
3344             disable fast_cmov
3345         ;;
3346     esac
3347
3348 fi
3349
3350 if [ "$cpu" != generic ]; then
3351     add_cflags  $cpuflags
3352     add_asflags $cpuflags
3353 fi
3354
3355 # compiler sanity check
3356 check_exec <<EOF
3357 int main(void){ return 0; }
3358 EOF
3359 if test "$?" != 0; then
3360     echo "$cc is unable to create an executable file."
3361     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3362         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3363         echo "Only do this if you know what cross compiling means."
3364     fi
3365     die "C compiler test failed."
3366 fi
3367
3368 add_cppflags -D_ISOC99_SOURCE
3369 add_cxxflags -D__STDC_CONSTANT_MACROS
3370 check_cflags -std=c99
3371 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3372 #include <stdlib.h>
3373 EOF
3374 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3375 #include <stdlib.h>
3376 EOF
3377
3378 check_host_cflags -std=c99
3379 check_host_cflags -Wall
3380
3381 check_64bit(){
3382     arch32=$1
3383     arch64=$2
3384     expr=$3
3385     check_code cc "" "int test[2*($expr) - 1]" &&
3386         subarch=$arch64 || subarch=$arch32
3387 }
3388
3389 case "$arch" in
3390     aarch64|alpha|ia64)
3391         spic=$shared
3392     ;;
3393     mips)
3394         check_64bit mips mips64 '_MIPS_SIM > 1'
3395         spic=$shared
3396     ;;
3397     parisc)
3398         check_64bit parisc parisc64 'sizeof(void *) > 4'
3399         spic=$shared
3400     ;;
3401     ppc)
3402         check_64bit ppc ppc64 'sizeof(void *) > 4'
3403         spic=$shared
3404     ;;
3405     sparc)
3406         check_64bit sparc sparc64 'sizeof(void *) > 4'
3407         spic=$shared
3408     ;;
3409     x86)
3410         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3411         if test "$subarch" = "x86_64"; then
3412             spic=$shared
3413         fi
3414     ;;
3415     ppc)
3416         check_cc <<EOF && subarch="ppc64"
3417         int test[(int)sizeof(char*) - 7];
3418 EOF
3419     ;;
3420 esac
3421
3422 enable $subarch
3423 enabled spic && enable_weak pic
3424
3425 # OS specific
3426 case $target_os in
3427     aix)
3428         SHFLAGS=-shared
3429         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3430         enabled shared && add_ldflags -Wl,-brtl
3431         ;;
3432     haiku)
3433         prefix_default="/boot/common"
3434         network_extralibs="-lnetwork"
3435         host_libs=
3436         ;;
3437     sunos)
3438         SHFLAGS='-shared -Wl,-h,$$(@F)'
3439         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3440         network_extralibs="-lsocket -lnsl"
3441         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3442         # When using suncc to build, the Solaris linker will mark
3443         # an executable with each instruction set encountered by
3444         # the Solaris assembler.  As our libraries contain their own
3445         # guards for processor-specific code, instead suppress
3446         # generation of the HWCAPS ELF section on Solaris x86 only.
3447         enabled_all suncc x86 &&
3448             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3449             add_ldflags -Wl,-M,mapfile
3450         nm_default='nm -P -g'
3451         ;;
3452     netbsd)
3453         disable symver
3454         oss_indev_extralibs="-lossaudio"
3455         oss_outdev_extralibs="-lossaudio"
3456         enabled gcc || check_ldflags -Wl,-zmuldefs
3457         ;;
3458     openbsd|bitrig)
3459         disable symver
3460         SHFLAGS='-shared'
3461         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3462         SLIB_INSTALL_LINKS=
3463         oss_indev_extralibs="-lossaudio"
3464         oss_outdev_extralibs="-lossaudio"
3465         ;;
3466     dragonfly)
3467         disable symver
3468         ;;
3469     freebsd)
3470         ;;
3471     bsd/os)
3472         add_extralibs -lpoll -lgnugetopt
3473         strip="strip -d"
3474         ;;
3475     darwin)
3476         gas="gas-preprocessor.pl $cc"
3477         enabled ppc && add_asflags -force_cpusubtype_ALL
3478         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3479         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3480         strip="${strip} -x"
3481         add_ldflags -Wl,-dynamic,-search_paths_first
3482         SLIBSUF=".dylib"
3483         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3484         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3485         objformat="macho"
3486         enabled x86_64 && objformat="macho64"
3487         enabled_any pic shared ||
3488             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3489         ;;
3490     mingw32*)
3491         if test $target_os = "mingw32ce"; then
3492             disable network
3493         else
3494             target_os=mingw32
3495         fi
3496         LIBTARGET=i386
3497         if enabled x86_64; then
3498             LIBTARGET="i386:x86-64"
3499         elif enabled arm; then
3500             LIBTARGET=arm-wince
3501         fi
3502         check_ldflags -Wl,--nxcompat
3503         check_ldflags -Wl,--dynamicbase
3504         shlibdir_default="$bindir_default"
3505         SLIBPREF=""
3506         SLIBSUF=".dll"
3507         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3508         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3509         dlltool="${cross_prefix}dlltool"
3510         if check_cmd lib.exe -list; then
3511             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3512             if enabled x86_64; then
3513                 LIBTARGET=x64
3514             fi
3515         elif check_cmd $dlltool --version; then
3516             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3517         fi
3518         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3519         SLIB_INSTALL_LINKS=
3520         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3521         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3522         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3523         objformat="win32"
3524         ranlib=:
3525         enable dos_paths
3526         ;;
3527     win32|win64)
3528         if enabled shared; then
3529             # Link to the import library instead of the normal static library
3530             # for shared libs.
3531             LD_LIB='%.lib'
3532             # Cannot build shared and static libs at the same time with MSVC.
3533             disable static
3534         fi
3535         shlibdir_default="$bindir_default"
3536         SLIBPREF=""
3537         SLIBSUF=".dll"
3538         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3539         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3540         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3541         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3542         SLIB_INSTALL_LINKS=
3543         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3544         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3545         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3546         objformat="win32"
3547         ranlib=:
3548         enable dos_paths
3549         ;;
3550     cygwin*)
3551         target_os=cygwin
3552         shlibdir_default="$bindir_default"
3553         SLIBPREF="cyg"
3554         SLIBSUF=".dll"
3555         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3556         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3557         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3558         SLIB_INSTALL_LINKS=
3559         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3560         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3561         objformat="win32"
3562         enable dos_paths
3563         ;;
3564     *-dos|freedos|opendos)
3565         network_extralibs="-lsocket"
3566         objformat="coff"
3567         enable dos_paths
3568         add_cppflags -U__STRICT_ANSI__
3569         ;;
3570     linux)
3571         enable dv1394
3572         ;;
3573     irix*)
3574         target_os=irix
3575         ranlib="echo ignoring ranlib"
3576         ;;
3577     os/2*)
3578         strip="lxlite -CS"
3579         ln_s="cp -f"
3580         objformat="aout"
3581         add_cppflags -D_GNU_SOURCE
3582         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3583         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3584         LIBSUF="_s.a"
3585         SLIBPREF=""
3586         SLIBSUF=".dll"
3587         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3588         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3589         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3590             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3591             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3592             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3593             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3594             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3595         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3596             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3597         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3598         enable dos_paths
3599         enable_weak os2threads
3600         ;;
3601     gnu/kfreebsd)
3602         add_cppflags -D_BSD_SOURCE
3603         ;;
3604     gnu)
3605         ;;
3606     qnx)
3607         add_cppflags -D_QNX_SOURCE
3608         network_extralibs="-lsocket"
3609         ;;
3610     symbian)
3611         SLIBSUF=".dll"
3612         enable dos_paths
3613         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3614         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3615         add_ldflags -Wl,--target1-abs,--no-undefined \
3616                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3617                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3618         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3619                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3620                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3621         ;;
3622     osf1)
3623         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3624         ;;
3625     minix)
3626         ;;
3627     plan9)
3628         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3629                      -D_REENTRANT_SOURCE        \
3630                      -D_RESEARCH_SOURCE         \
3631                      -DFD_SETSIZE=96            \
3632                      -DHAVE_SOCK_OPTS
3633         add_compat strtod.o strtod=avpriv_strtod
3634         network_extralibs='-lbsd'
3635         exeobjs=compat/plan9/main.o
3636         disable ffserver
3637         cp_f='cp'
3638         ;;
3639     none)
3640         ;;
3641     *)
3642         die "Unknown OS '$target_os'."
3643         ;;
3644 esac
3645
3646 # determine libc flavour
3647
3648 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3649 if check_cpp_condition features.h "defined __UCLIBC__"; then
3650     libc_type=uclibc
3651     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3652 elif check_cpp_condition features.h "defined __GLIBC__"; then
3653     libc_type=glibc
3654     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3655 # MinGW headers can be installed on Cygwin, so check for newlib first.
3656 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3657     libc_type=newlib
3658     add_cppflags -U__STRICT_ANSI__
3659 elif check_header _mingw.h; then
3660     libc_type=mingw
3661     check_cpp_condition _mingw.h \
3662         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3663             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3664         die "ERROR: MinGW runtime version must be >= 3.15."
3665     add_cppflags -U__STRICT_ANSI__
3666     if check_cpp_condition _mingw.h "defined(__MINGW64_VERSION_MAJOR) && \
3667             __MINGW64_VERSION_MAJOR < 3"; then
3668         add_compat msvcrt/snprintf.o
3669         add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3670     else
3671         add_cppflags -D__USE_MINGW_ANSI_STDIO=1
3672     fi
3673 elif check_func_headers stdlib.h _get_doserrno; then
3674     libc_type=msvcrt
3675     add_compat strtod.o strtod=avpriv_strtod
3676     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3677                                  _snprintf=avpriv_snprintf  \
3678                                  vsnprintf=avpriv_vsnprintf
3679     # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3680     # 0x601 by default unless something else is set by the user.
3681     # This can easily lead to us detecting functions only present
3682     # in such new versions and producing binaries requiring windows 7.0.
3683     # Therefore explicitly set the default to XP unless the user has
3684     # set something else on the command line.
3685     check_cpp_condition stdlib.h "defined(_WIN32_WINNT)" || add_cppflags -D_WIN32_WINNT=0x0502
3686 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3687     libc_type=klibc
3688 elif check_cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3689     libc_type=bionic
3690     add_compat strtod.o strtod=avpriv_strtod
3691 fi
3692
3693 test -n "$libc_type" && enable $libc_type
3694
3695 # hacks for compiler/libc/os combinations
3696
3697 if enabled_all tms470 glibc; then
3698     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3699     add_cppflags -D__USER_LABEL_PREFIX__=
3700     add_cppflags -D__builtin_memset=memset
3701     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3702     add_cflags   -pds=48    # incompatible redefinition of macro
3703 fi
3704
3705 if enabled_all ccc glibc; then
3706     add_ldflags -Wl,-z,now  # calls to libots crash without this
3707 fi
3708
3709 esc(){
3710     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3711 }
3712
3713 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3714
3715 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3716
3717 set_default $PATHS_LIST
3718 set_default nm
3719
3720 # we need to build at least one lib type
3721 if ! enabled_any static shared; then
3722     cat <<EOF
3723 At least one library type must be built.
3724 Specify --enable-static to build the static libraries or --enable-shared to
3725 build the shared libraries as well. To only build the shared libraries specify
3726 --disable-static in addition to --enable-shared.
3727 EOF
3728     exit 1;
3729 fi
3730
3731 # backward compatibility layer for incompatible_libav/fork_abi
3732 enabled incompatible_fork_abi  && enable incompatible_libav_abi
3733 enabled incompatible_libav_abi && enable incompatible_fork_abi
3734
3735 die_license_disabled() {
3736     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3737 }
3738
3739 die_license_disabled_gpl() {
3740     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3741 }
3742
3743 die_license_disabled gpl frei0r
3744 die_license_disabled gpl libcdio
3745 die_license_disabled gpl libutvideo
3746 die_license_disabled gpl libvidstab
3747 die_license_disabled gpl libx264
3748 die_license_disabled gpl libxavs
3749 die_license_disabled gpl libxvid
3750 die_license_disabled gpl x11grab
3751
3752 die_license_disabled nonfree libaacplus
3753 die_license_disabled nonfree libfaac
3754 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
3755 enabled gpl && die_license_disabled_gpl nonfree openssl
3756
3757 die_license_disabled version3 libopencore_amrnb
3758 die_license_disabled version3 libopencore_amrwb
3759 die_license_disabled version3 libvo_aacenc
3760 die_license_disabled version3 libvo_amrwbenc
3761
3762 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3763
3764 disabled optimizations || check_cflags -fomit-frame-pointer
3765
3766 enable_weak_pic() {
3767     disabled pic && return
3768     enable pic
3769     add_cppflags -DPIC
3770     case "$target_os" in
3771     mingw*|cygwin*)
3772         ;;
3773     *)
3774         add_cflags -fPIC
3775         ;;
3776     esac
3777     add_asflags  -fPIC
3778 }
3779
3780 enabled pic && enable_weak_pic
3781
3782 check_cc <<EOF || die "Symbol mangling check failed."
3783 int ff_extern;
3784 EOF
3785 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3786 extern_prefix=${sym%%ff_extern*}
3787
3788 check_cc <<EOF && enable_weak inline_asm
3789 void foo(void) { __asm__ volatile ("" ::); }
3790 EOF
3791
3792 _restrict=
3793 for restrict_keyword in restrict __restrict__ __restrict; do
3794     check_cc <<EOF && _restrict=$restrict_keyword && break
3795 void foo(char * $restrict_keyword p);
3796 EOF
3797 done
3798
3799 check_cc <<EOF && enable pragma_deprecated
3800 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3801 EOF
3802
3803 check_cc <<EOF && enable attribute_packed
3804 struct { int x; } __attribute__((packed)) x;
3805 EOF
3806
3807 check_cc <<EOF && enable attribute_may_alias
3808 union { int x; } __attribute__((may_alias)) x;
3809 EOF
3810
3811 check_cc <<EOF || die "endian test failed"
3812 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3813 EOF
3814 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3815
3816 check_inline_asm inline_asm_labels '"1:\n"'
3817
3818 if enabled alpha; then
3819
3820     check_cflags -mieee
3821
3822 elif enabled arm; then
3823
3824     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
3825 float func(float a, float b){ return a+b; }
3826 EOF
3827
3828     enabled thumb && check_cflags -mthumb || check_cflags -marm
3829     nogas=die
3830
3831     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3832         enable vfp_args
3833     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3834         case "${cross_prefix:-$cc}" in
3835             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3836             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3837 __asm__ (".eabi_attribute 28, 1");
3838 int main(void) { return 0; }
3839 EOF
3840         esac
3841         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3842     fi
3843
3844     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3845     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3846     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3847     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3848     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3849     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3850
3851     [ $target_os = linux ] ||
3852         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3853             $ARCH_EXT_LIST_ARM
3854
3855     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3856     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3857
3858     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3859
3860 elif enabled mips; then
3861
3862     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3863     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
3864      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
3865     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
3866      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
3867     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
3868      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
3869     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
3870      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
3871
3872 elif enabled parisc; then
3873
3874     if enabled gcc; then
3875         case $($cc -dumpversion) in
3876             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3877         esac
3878     fi
3879
3880 elif enabled ppc; then
3881
3882     enable local_aligned_8 local_aligned_16
3883
3884     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3885     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3886     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3887     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3888
3889     # AltiVec flags: The FSF version of GCC differs from the Apple version
3890     if enabled altivec; then
3891         if ! enabled_any pic ppc64; then
3892             nogas=warn
3893         fi
3894         check_cflags -maltivec -mabi=altivec &&
3895         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3896         check_cflags -faltivec
3897
3898         # check if our compiler supports Motorola AltiVec C API
3899         check_cc <<EOF || disable altivec
3900 $inc_altivec_h
3901 int main(void) {
3902     vector signed int v1 = (vector signed int) { 0 };
3903     vector signed int v2 = (vector signed int) { 1 };
3904     v1 = vec_add(v1, v2);
3905     return 0;
3906 }
3907 EOF
3908
3909         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3910     fi
3911
3912 elif enabled sparc; then
3913
3914     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3915
3916 elif enabled x86; then
3917
3918     check_builtin rdtsc    intrin.h   "__rdtsc()"
3919     check_builtin mm_empty mmintrin.h "_mm_empty()"
3920
3921     enable local_aligned_8 local_aligned_16
3922
3923     # check whether EBP is available on x86
3924     # As 'i' is stored on the stack, this program will crash
3925     # if the base pointer is used to access it because the
3926     # base pointer is cleared in the inline assembly code.
3927     check_exec_crash <<EOF && enable ebp_available
3928 volatile int i=0;
3929 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3930 return i;
3931 EOF
3932
3933     # check whether EBX is available on x86
3934     check_inline_asm ebx_available '""::"b"(0)' &&
3935         check_inline_asm ebx_available '"":::"%ebx"'
3936
3937     # check whether xmm clobbers are supported
3938     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3939
3940     # check whether binutils is new enough to compile SSSE3/MMXEXT
3941     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3942     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3943
3944     if ! disabled_any asm mmx yasm; then
3945         if check_cmd $yasmexe --version; then
3946             enabled x86_64 && yasm_extra="-m amd64"
3947             yasm_debug="-g dwarf2"
3948         elif check_cmd nasm -v; then
3949             yasmexe=nasm
3950             yasm_debug="-g -F dwarf"
3951             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3952         fi
3953
3954         YASMFLAGS="-f $objformat $yasm_extra"
3955         enabled pic               && append YASMFLAGS "-DPIC"
3956         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3957         case "$objformat" in
3958             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3959         esac
3960
3961         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
3962             die "yasm not found, use --disable-yasm for a crippled build"
3963         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
3964         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3965         check_yasm "CPU amdnop" && enabled i686 && enable cpunop
3966     fi
3967
3968     case "$cpu" in
3969         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3970             disable fast_clz
3971         ;;
3972     esac
3973
3974 fi
3975
3976 if enabled asm; then
3977     as=${gas:=$as}
3978     check_as <<EOF && enable gnu_as || \
3979         $nogas "GNU assembler not found, install gas-preprocessor"
3980 .macro m n
3981 \n: .int 0
3982 .endm
3983 m x
3984 EOF
3985 fi
3986
3987 check_ldflags -Wl,--as-needed
3988
3989 if check_func dlopen; then
3990     ldl=
3991 elif check_func dlopen -ldl; then
3992     ldl=-ldl
3993 fi
3994
3995 if ! disabled network; then
3996     check_type "sys/types.h sys/socket.h" socklen_t
3997     check_type netdb.h "struct addrinfo"
3998     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3999     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4000     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4001     check_type netinet/in.h "struct sockaddr_in6"
4002     check_type poll.h "struct pollfd"
4003     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4004     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4005     check_type netinet/sctp.h "struct sctp_event_subscribe"
4006     check_func getaddrinfo $network_extralibs
4007     check_func getservbyport $network_extralibs
4008     # Prefer arpa/inet.h over winsock2
4009     if check_header arpa/inet.h ; then
4010         check_func closesocket
4011     elif check_header winsock2.h ; then
4012         check_func_headers winsock2.h closesocket -lws2 &&
4013             network_extralibs="-lws2" ||
4014         { check_func_headers winsock2.h closesocket -lws2_32 &&
4015             network_extralibs="-lws2_32"; }
4016         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4017         check_type ws2tcpip.h socklen_t
4018         check_type ws2tcpip.h "struct addrinfo"
4019         check_type ws2tcpip.h "struct group_source_req"
4020         check_type ws2tcpip.h "struct ip_mreq_source"
4021         check_type ws2tcpip.h "struct ipv6_mreq"
4022         check_type winsock2.h "struct pollfd"
4023         check_type ws2tcpip.h "struct sockaddr_in6"
4024         check_type ws2tcpip.h "struct sockaddr_storage"
4025         check_struct winsock2.h "struct sockaddr" sa_len
4026     else
4027         disable network
4028     fi
4029 fi
4030
4031 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4032 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4033
4034 check_func  access
4035 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4036 check_func  fcntl
4037 check_func  fork
4038 check_func_headers stdlib.h&n