sgienc: remove unused SgiContext
[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     pthread_cancel
1501     rdtsc
1502     rsync_contimeout
1503     sarestart
1504     sched_getaffinity
1505     sdl
1506     SetConsoleTextAttribute
1507     setmode
1508     setrlimit
1509     Sleep
1510     sndio_h
1511     socklen_t
1512     soundcard_h
1513     strerror_r
1514     struct_addrinfo
1515     struct_group_source_req
1516     struct_ip_mreq_source
1517     struct_ipv6_mreq
1518     struct_pollfd
1519     struct_rusage_ru_maxrss
1520     struct_sctp_event_subscribe
1521     struct_sockaddr_in6
1522     struct_sockaddr_sa_len
1523     struct_sockaddr_storage
1524     struct_stat_st_mtim_tv_nsec
1525     struct_v4l2_frmivalenum_discrete
1526     symver_asm_label
1527     symver_gnu_asm
1528     sync_val_compare_and_swap
1529     sysconf
1530     sysctl
1531     sys_mman_h
1532     sys_param_h
1533     sys_resource_h
1534     sys_select_h
1535     sys_soundcard_h
1536     sys_time_h
1537     sys_videoio_h
1538     termios_h
1539     texi2html
1540     threads
1541     unistd_h
1542     usleep
1543     vfp_args
1544     VirtualAlloc
1545     windows_h
1546     winsock2_h
1547     xform_asm
1548     xmm_clobbers
1549 "
1550
1551 # options emitted with CONFIG_ prefix but not available on the command line
1552 CONFIG_EXTRA="
1553     aandcttables
1554     ac3dsp
1555     audio_frame_queue
1556     dsputil
1557     frame_thread_encoder
1558     gcrypt
1559     golomb
1560     gplv3
1561     h264chroma
1562     h264dsp
1563     h264pred
1564     h264qpel
1565     hpeldsp
1566     huffman
1567     lgplv3
1568     lpc
1569     mpegaudio
1570     mpegaudiodsp
1571     mpegvideo
1572     mpegvideoenc
1573     nettle
1574     rangecoder
1575     rtpdec
1576     rtpenc_chain
1577     sinewin
1578     videodsp
1579     vp3dsp
1580 "
1581
1582 CMDLINE_SELECT="
1583     $ARCH_EXT_LIST
1584     $CONFIG_LIST
1585     $HAVE_LIST_CMDLINE
1586     $THREADS_LIST
1587     asm
1588     cross_compile
1589     debug
1590     extra_warnings
1591     logging
1592     lto
1593     optimizations
1594     stripping
1595 "
1596
1597 PATHS_LIST='
1598     bindir
1599     datadir
1600     incdir
1601     libdir
1602     mandir
1603     prefix
1604     shlibdir
1605 '
1606
1607 CMDLINE_SET="
1608     $PATHS_LIST
1609     ar
1610     arch
1611     as
1612     assert_level
1613     build_suffix
1614     cc
1615     cpu
1616     cross_prefix
1617     cxx
1618     dep_cc
1619     extra_version
1620     host_cc
1621     host_cflags
1622     host_ld
1623     host_ldflags
1624     host_libs
1625     host_os
1626     install
1627     ld
1628     logfile
1629     malloc_prefix
1630     nm
1631     optflags
1632     pkg_config
1633     progs_suffix
1634     random_seed
1635     samples
1636     strip
1637     sysinclude
1638     sysroot
1639     target_exec
1640     target_os
1641     target_path
1642     target_samples
1643     toolchain
1644     valgrind
1645     yasmexe
1646 "
1647
1648 CMDLINE_APPEND="
1649     extra_cflags
1650     extra_cxxflags
1651     host_cppflags
1652 "
1653
1654 # code dependency declarations
1655
1656 # architecture extensions
1657
1658 armv5te_deps="arm"
1659 armv6_deps="arm"
1660 armv6t2_deps="arm"
1661 neon_deps="arm"
1662 vfp_deps="arm"
1663 vfpv3_deps="vfp"
1664
1665 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1666
1667 mipsfpu_deps="mips"
1668 mips32r2_deps="mips"
1669 mipsdspr1_deps="mips"
1670 mipsdspr2_deps="mips"
1671
1672 altivec_deps="ppc"
1673 ppc4xx_deps="ppc"
1674
1675 vis_deps="sparc"
1676
1677 x86_64_suggest="fast_cmov i686"
1678
1679 amd3dnow_deps="mmx"
1680 amd3dnowext_deps="amd3dnow"
1681 mmx_deps="x86"
1682 mmxext_deps="mmx"
1683 sse_deps="mmxext"
1684 sse2_deps="sse"
1685 sse3_deps="sse2"
1686 ssse3_deps="sse3"
1687 sse4_deps="ssse3"
1688 sse42_deps="sse4"
1689 avx_deps="sse42"
1690 fma4_deps="avx"
1691
1692 mmx_external_deps="yasm"
1693 mmx_inline_deps="inline_asm"
1694 mmx_suggest="mmx_external mmx_inline"
1695
1696 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1697     eval dep=\$${ext}_deps
1698     eval ${ext}_external_deps='"${dep}_external"'
1699     eval ${ext}_inline_deps='"${dep}_inline"'
1700     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1701 done
1702
1703 aligned_stack_if_any="ppc x86"
1704 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1705 fast_clz_if_any="alpha avr32 mips ppc x86"
1706 fast_unaligned_if_any="ppc x86"
1707
1708 inline_asm_deps="!tms470"
1709 need_memalign="altivec neon sse"
1710
1711 symver_if_any="symver_asm_label symver_gnu_asm"
1712
1713 log2_deps="!msvcrt"
1714
1715 # subsystems
1716 dct_select="rdft"
1717 error_resilience_select="dsputil"
1718 frame_thread_encoder_deps="encoders threads"
1719 lpc_select="dsputil"
1720 mdct_select="fft"
1721 rdft_select="fft"
1722 mpegaudio_select="mpegaudiodsp"
1723 mpegaudiodsp_select="dct"
1724 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1725 mpegvideoenc_select="mpegvideo"
1726
1727 # decoders / encoders
1728 aac_decoder_select="mdct sinewin"
1729 aac_encoder_select="audio_frame_queue mdct sinewin"
1730 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1731 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1732 ac3_encoder_select="mdct ac3dsp dsputil"
1733 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1734 aic_decoder_select="dsputil golomb"
1735 alac_encoder_select="lpc"
1736 als_decoder_select="dsputil"
1737 amrnb_decoder_select="lsp"
1738 amrwb_decoder_select="lsp"
1739 amv_decoder_select="dsputil hpeldsp"
1740 amv_encoder_select="aandcttables"
1741 ape_decoder_select="dsputil"
1742 asv1_decoder_select="dsputil"
1743 asv1_encoder_select="dsputil"
1744 asv2_decoder_select="dsputil"
1745 asv2_encoder_select="dsputil"
1746 atrac1_decoder_select="mdct sinewin"
1747 atrac3_decoder_select="mdct"
1748 bink_decoder_select="dsputil hpeldsp"
1749 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1750 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1751 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1752 cllc_decoder_select="dsputil"
1753 comfortnoise_encoder_select="lpc"
1754 cook_decoder_select="dsputil mdct sinewin"
1755 cscd_decoder_select="lzo"
1756 cscd_decoder_suggest="zlib"
1757 dca_decoder_select="mdct"
1758 dirac_decoder_select="dsputil dwt golomb videodsp"
1759 dnxhd_decoder_select="dsputil"
1760 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1761 dvvideo_decoder_select="dsputil"
1762 dvvideo_encoder_select="dsputil"
1763 dxa_decoder_select="zlib"
1764 eac3_decoder_select="ac3_decoder"
1765 eac3_encoder_select="ac3_encoder"
1766 eamad_decoder_select="aandcttables dsputil mpegvideo"
1767 eatgq_decoder_select="aandcttables"
1768 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1769 exr_decoder_select="zlib"
1770 ffv1_decoder_select="dsputil golomb rangecoder"
1771 ffv1_encoder_select="dsputil rangecoder"
1772 ffvhuff_decoder_select="dsputil"
1773 ffvhuff_encoder_select="dsputil huffman"
1774 flac_decoder_select="golomb"
1775 flac_encoder_select="dsputil golomb lpc"
1776 flashsv_decoder_select="zlib"
1777 flashsv_encoder_select="zlib"
1778 flashsv2_encoder_select="zlib"
1779 flashsv2_decoder_select="zlib"
1780 flv_decoder_select="h263_decoder"
1781 flv_encoder_select="h263_encoder"
1782 fourxm_decoder_select="dsputil"
1783 fraps_decoder_select="dsputil huffman"
1784 g2m_decoder_select="dsputil zlib"
1785 g729_decoder_select="dsputil"
1786 h261_decoder_select="error_resilience mpegvideo"
1787 h261_encoder_select="aandcttables mpegvideoenc"
1788 h263_decoder_select="error_resilience h263_parser mpegvideo"
1789 h263_encoder_select="aandcttables mpegvideoenc"
1790 h263i_decoder_select="h263_decoder"
1791 h263p_encoder_select="h263_encoder"
1792 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1793 h264_decoder_suggest="error_resilience"
1794 huffyuv_decoder_select="dsputil"
1795 huffyuv_encoder_select="dsputil huffman"
1796 iac_decoder_select="dsputil fft mdct sinewin"
1797 imc_decoder_select="dsputil fft mdct sinewin"
1798 indeo3_decoder_select="hpeldsp"
1799 interplay_video_decoder_select="hpeldsp"
1800 jpegls_decoder_select="dsputil golomb hpeldsp"
1801 jpegls_encoder_select="golomb"
1802 jv_decoder_select="dsputil"
1803 lagarith_decoder_select="dsputil"
1804 ljpeg_encoder_select="aandcttables mpegvideoenc"
1805 loco_decoder_select="golomb"
1806 mdec_decoder_select="dsputil error_resilience mpegvideo"
1807 mimic_decoder_select="dsputil hpeldsp"
1808 mjpeg_decoder_select="dsputil hpeldsp"
1809 mjpegb_decoder_select="dsputil hpeldsp"
1810 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1811 mlp_decoder_select="dsputil mlp_parser"
1812 motionpixels_decoder_select="dsputil"
1813 mp1_decoder_select="mpegaudio"
1814 mp1float_decoder_select="mpegaudio"
1815 mp2_decoder_select="mpegaudio"
1816 mp2float_decoder_select="mpegaudio"
1817 mp3_decoder_select="mpegaudio"
1818 mp3adu_decoder_select="mpegaudio"
1819 mp3adufloat_decoder_select="mpegaudio"
1820 mp3float_decoder_select="mpegaudio"
1821 mp3on4_decoder_select="mpegaudio"
1822 mp3on4float_decoder_select="mpegaudio"
1823 mpc7_decoder_select="dsputil mpegaudiodsp"
1824 mpc8_decoder_select="dsputil mpegaudiodsp"
1825 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1826 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1827 mpeg1video_decoder_select="error_resilience mpegvideo"
1828 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1829 mpeg2video_decoder_select="error_resilience mpegvideo"
1830 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1831 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1832 mpeg4_encoder_select="h263_encoder"
1833 msmpeg4v1_decoder_select="h263_decoder"
1834 msmpeg4v2_decoder_select="h263_decoder"
1835 msmpeg4v2_encoder_select="h263_encoder"
1836 msmpeg4v3_decoder_select="h263_decoder"
1837 msmpeg4v3_encoder_select="h263_encoder"
1838 mss2_decoder_select="error_resilience vc1_decoder"
1839 mxpeg_decoder_select="dsputil hpeldsp"
1840 nellymoser_decoder_select="mdct sinewin"
1841 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1842 nuv_decoder_select="dsputil lzo"
1843 png_decoder_select="zlib"
1844 png_encoder_select="dsputil zlib"
1845 prores_decoder_select="dsputil"
1846 prores_encoder_select="dsputil"
1847 qcelp_decoder_select="lsp"
1848 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1849 ra_144_encoder_select="audio_frame_queue lpc"
1850 ralf_decoder_select="golomb"
1851 rtjpeg_decoder_select="dsputil"
1852 rv10_decoder_select="error_resilience h263_decoder"
1853 rv10_encoder_select="h263_encoder"
1854 rv20_decoder_select="error_resilience h263_decoder"
1855 rv20_encoder_select="h263_encoder"
1856 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1857 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1858 shorten_decoder_select="golomb"
1859 sipr_decoder_select="lsp"
1860 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
1861 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
1862 sonic_decoder_select="golomb"
1863 sonic_encoder_select="golomb"
1864 sonic_ls_encoder_select="golomb"
1865 sp5x_decoder_select="dsputil hpeldsp"
1866 svq1_decoder_select="hpeldsp"
1867 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1868 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1869 svq3_decoder_suggest="error_resilience zlib"
1870 tak_decoder_select="dsputil"
1871 theora_decoder_select="vp3_decoder"
1872 tiff_decoder_suggest="zlib"
1873 tiff_encoder_suggest="zlib"
1874 thp_decoder_select="dsputil hpeldsp"
1875 truehd_decoder_select="mlp_parser"
1876 truemotion2_decoder_select="dsputil"
1877 truespeech_decoder_select="dsputil"
1878 tscc_decoder_select="zlib"
1879 twinvq_decoder_select="mdct lsp sinewin"
1880 utvideo_decoder_select="dsputil"
1881 utvideo_encoder_select="dsputil huffman"
1882 vble_decoder_select="dsputil"
1883 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1884 vc1image_decoder_select="vc1_decoder"
1885 vorbis_decoder_select="mdct"
1886 vorbis_encoder_select="mdct"
1887 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1888 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1889 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1890 vp6a_decoder_select="vp6_decoder"
1891 vp6f_decoder_select="vp6_decoder"
1892 vp8_decoder_select="h264pred videodsp"
1893 webp_decoder_select="vp8_decoder"
1894 wmapro_decoder_select="mdct sinewin"
1895 wmav1_decoder_select="mdct sinewin"
1896 wmav1_encoder_select="mdct sinewin"
1897 wmav2_decoder_select="mdct sinewin"
1898 wmav2_encoder_select="mdct sinewin"
1899 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1900 wmv1_decoder_select="h263_decoder"
1901 wmv1_encoder_select="h263_encoder"
1902 wmv2_decoder_select="h263_decoder videodsp"
1903 wmv2_encoder_select="h263_encoder"
1904 wmv3_decoder_select="vc1_decoder"
1905 wmv3image_decoder_select="wmv3_decoder"
1906 zerocodec_decoder_select="zlib"
1907 zlib_decoder_select="zlib"
1908 zlib_encoder_select="zlib"
1909 zmbv_decoder_select="zlib"
1910 zmbv_encoder_select="zlib"
1911
1912 # hardware accelerators
1913 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1914 dxva2_deps="dxva2api_h"
1915 vaapi_deps="va_va_h"
1916 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1917 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1918 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1919
1920 h263_vaapi_hwaccel_deps="vaapi"
1921 h263_vaapi_hwaccel_select="h263_decoder"
1922 h263_vdpau_hwaccel_deps="vdpau"
1923 h263_vdpau_hwaccel_select="h263_decoder"
1924 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1925 h264_dxva2_hwaccel_deps="dxva2"
1926 h264_dxva2_hwaccel_select="h264_decoder"
1927 h264_vaapi_hwaccel_deps="vaapi"
1928 h264_vaapi_hwaccel_select="h264_decoder"
1929 h264_vda_decoder_deps="vda"
1930 h264_vda_decoder_select="h264_decoder"
1931 h264_vda_hwaccel_deps="vda"
1932 h264_vda_hwaccel_select="h264_decoder"
1933 h264_vdpau_decoder_deps="vdpau"
1934 h264_vdpau_decoder_select="h264_decoder"
1935 h264_vdpau_hwaccel_deps="vdpau"
1936 h264_vdpau_hwaccel_select="h264_decoder"
1937 mpeg_vdpau_decoder_deps="vdpau"
1938 mpeg_vdpau_decoder_select="mpeg2video_decoder"
1939 mpeg1_vdpau_decoder_deps="vdpau"
1940 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
1941 mpeg1_vdpau_hwaccel_deps="vdpau"
1942 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1943 mpeg2_crystalhd_decoder_select="crystalhd"
1944 mpeg2_dxva2_hwaccel_deps="dxva2"
1945 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1946 mpeg2_vaapi_hwaccel_deps="vaapi"
1947 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1948 mpeg2_vdpau_hwaccel_deps="vdpau"
1949 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1950 mpeg4_crystalhd_decoder_select="crystalhd"
1951 mpeg4_vaapi_hwaccel_deps="vaapi"
1952 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1953 mpeg4_vdpau_decoder_deps="vdpau"
1954 mpeg4_vdpau_decoder_select="mpeg4_decoder"
1955 mpeg4_vdpau_hwaccel_deps="vdpau"
1956 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1957 msmpeg4_crystalhd_decoder_select="crystalhd"
1958 vc1_crystalhd_decoder_select="crystalhd"
1959 vc1_dxva2_hwaccel_deps="dxva2"
1960 vc1_dxva2_hwaccel_select="vc1_decoder"
1961 vc1_vaapi_hwaccel_deps="vaapi"
1962 vc1_vaapi_hwaccel_select="vc1_decoder"
1963 vc1_vdpau_decoder_deps="vdpau"
1964 vc1_vdpau_decoder_select="vc1_decoder"
1965 vc1_vdpau_hwaccel_deps="vdpau"
1966 vc1_vdpau_hwaccel_select="vc1_decoder"
1967 wmv3_crystalhd_decoder_select="crystalhd"
1968 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1969 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1970 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1971 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1972
1973 # parsers
1974 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1975 mpeg4video_parser_select="error_resilience mpegvideo"
1976 mpegvideo_parser_select="error_resilience mpegvideo"
1977 vc1_parser_select="mpegvideo"
1978
1979 # external libraries
1980 libaacplus_encoder_deps="libaacplus"
1981 libcelt_decoder_deps="libcelt"
1982 libfaac_encoder_deps="libfaac"
1983 libfaac_encoder_select="audio_frame_queue"
1984 libfdk_aac_encoder_deps="libfdk_aac"
1985 libfdk_aac_encoder_select="audio_frame_queue"
1986 libgme_demuxer_deps="libgme"
1987 libgsm_decoder_deps="libgsm"
1988 libgsm_encoder_deps="libgsm"
1989 libgsm_ms_decoder_deps="libgsm"
1990 libgsm_ms_encoder_deps="libgsm"
1991 libilbc_decoder_deps="libilbc"
1992 libilbc_encoder_deps="libilbc"
1993 libmodplug_demuxer_deps="libmodplug"
1994 libmp3lame_encoder_deps="libmp3lame"
1995 libmp3lame_encoder_select="audio_frame_queue"
1996 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1997 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1998 libopencore_amrnb_encoder_select="audio_frame_queue"
1999 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2000 libopenjpeg_decoder_deps="libopenjpeg"
2001 libopenjpeg_encoder_deps="libopenjpeg"
2002 libopus_decoder_deps="libopus"
2003 libopus_encoder_deps="libopus"
2004 libopus_encoder_select="audio_frame_queue"
2005 libquvi_demuxer_deps="libquvi"
2006 libschroedinger_decoder_deps="libschroedinger"
2007 libschroedinger_encoder_deps="libschroedinger"
2008 libshine_encoder_deps="libshine"
2009 libshine_encoder_select="audio_frame_queue"
2010 libspeex_decoder_deps="libspeex"
2011 libspeex_encoder_deps="libspeex"
2012 libspeex_encoder_select="audio_frame_queue"
2013 libstagefright_h264_decoder_deps="libstagefright_h264"
2014 libtheora_encoder_deps="libtheora"
2015 libtwolame_encoder_deps="libtwolame"
2016 libvo_aacenc_encoder_deps="libvo_aacenc"
2017 libvo_aacenc_encoder_select="audio_frame_queue"
2018 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2019 libvorbis_decoder_deps="libvorbis"
2020 libvorbis_encoder_deps="libvorbis"
2021 libvorbis_encoder_select="audio_frame_queue"
2022 libvpx_vp8_decoder_deps="libvpx"
2023 libvpx_vp8_encoder_deps="libvpx"
2024 libvpx_vp9_decoder_deps="libvpx"
2025 libvpx_vp9_encoder_deps="libvpx"
2026 libwavpack_encoder_deps="libwavpack"
2027 libx264_encoder_deps="libx264"
2028 libx264rgb_encoder_deps="libx264"
2029 libxavs_encoder_deps="libxavs"
2030 libxvid_encoder_deps="libxvid"
2031 libutvideo_decoder_deps="libutvideo"
2032 libutvideo_encoder_deps="libutvideo"
2033
2034 # demuxers / muxers
2035 ac3_demuxer_select="ac3_parser"
2036 asf_stream_muxer_select="asf_muxer"
2037 avisynth_demuxer_deps="avisynth"
2038 dirac_demuxer_select="dirac_parser"
2039 dts_demuxer_select="dca_parser"
2040 dtshd_demuxer_select="dca_parser"
2041 eac3_demuxer_select="ac3_parser"
2042 f4v_muxer_select="mov_muxer"
2043 flac_demuxer_select="flac_parser"
2044 ipod_muxer_select="mov_muxer"
2045 ismv_muxer_select="mov_muxer"
2046 libnut_demuxer_deps="libnut"
2047 libnut_muxer_deps="libnut"
2048 matroska_audio_muxer_select="matroska_muxer"
2049 matroska_demuxer_suggest="bzlib lzo zlib"
2050 mov_demuxer_suggest="zlib"
2051 mov_muxer_select="rtpenc_chain"
2052 mp3_demuxer_select="mpegaudio_parser"
2053 mp4_muxer_select="mov_muxer"
2054 mpegts_muxer_select="adts_muxer latm_muxer"
2055 mpegtsraw_demuxer_select="mpegts_demuxer"
2056 mxf_d10_muxer_select="mxf_muxer"
2057 ogg_demuxer_select="golomb"
2058 psp_muxer_select="mov_muxer"
2059 rtp_demuxer_select="sdp_demuxer"
2060 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2061 rtsp_demuxer_select="http_protocol rtpdec"
2062 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2063 sap_demuxer_select="sdp_demuxer"
2064 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2065 sdp_demuxer_select="rtpdec"
2066 smoothstreaming_muxer_select="ismv_muxer"
2067 spdif_muxer_select="aac_parser"
2068 tak_demuxer_select="tak_parser"
2069 tg2_muxer_select="mov_muxer"
2070 tgp_muxer_select="mov_muxer"
2071 vobsub_demuxer_select="mpegps_demuxer"
2072 w64_demuxer_deps="wav_demuxer"
2073 w64_muxer_deps="wav_muxer"
2074
2075 # indevs / outdevs
2076 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2077 alsa_outdev_deps="alsa_asoundlib_h"
2078 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2079 caca_outdev_deps="libcaca"
2080 dshow_indev_deps="IBaseFilter"
2081 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2082 dv1394_indev_deps="dv1394 dv_demuxer"
2083 fbdev_indev_deps="linux_fb_h"
2084 iec61883_indev_deps="libiec61883"
2085 jack_indev_deps="jack_jack_h sem_timedwait"
2086 lavfi_indev_deps="avfilter"
2087 libcdio_indev_deps="libcdio"
2088 libdc1394_indev_deps="libdc1394"
2089 libv4l2_indev_deps="libv4l2"
2090 openal_indev_deps="openal"
2091 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2092 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2093 pulse_indev_deps="libpulse"
2094 sdl_outdev_deps="sdl"
2095 sndio_indev_deps="sndio_h"
2096 sndio_outdev_deps="sndio_h"
2097 v4l_indev_deps="linux_videodev_h"
2098 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2099 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2100 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2101 vfwcap_indev_extralibs="-lavicap32"
2102 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2103 xv_outdev_extralibs="-lXv -lX11 -lXext"
2104 x11grab_indev_deps="x11grab"
2105
2106 # protocols
2107 bluray_protocol_deps="libbluray"
2108 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2109 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2110 ffrtmpcrypt_protocol_select="tcp_protocol"
2111 ffrtmphttp_protocol_deps="!librtmp_protocol"
2112 ffrtmphttp_protocol_select="http_protocol"
2113 ftp_protocol_select="tcp_protocol"
2114 gopher_protocol_select="network"
2115 httpproxy_protocol_select="tcp_protocol"
2116 http_protocol_select="tcp_protocol"
2117 https_protocol_select="tls_protocol"
2118 librtmp_protocol_deps="librtmp"
2119 librtmpe_protocol_deps="librtmp"
2120 librtmps_protocol_deps="librtmp"
2121 librtmpt_protocol_deps="librtmp"
2122 librtmpte_protocol_deps="librtmp"
2123 mmsh_protocol_select="http_protocol"
2124 mmst_protocol_select="network"
2125 rtmp_protocol_deps="!librtmp_protocol"
2126 rtmp_protocol_select="tcp_protocol"
2127 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2128 rtmps_protocol_deps="!librtmp_protocol"
2129 rtmps_protocol_select="tls_protocol"
2130 rtmpt_protocol_select="ffrtmphttp_protocol"
2131 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2132 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2133 rtp_protocol_select="udp_protocol"
2134 sctp_protocol_deps="struct_sctp_event_subscribe"
2135 sctp_protocol_select="network"
2136 srtp_protocol_select="rtp_protocol"
2137 tcp_protocol_select="network"
2138 tls_protocol_deps_any="openssl gnutls"
2139 tls_protocol_select="tcp_protocol"
2140 udp_protocol_select="network"
2141
2142 # filters
2143 aconvert_filter_deps="swresample"
2144 amovie_filter_deps="avcodec avformat"
2145 aresample_filter_deps="swresample"
2146 ass_filter_deps="libass"
2147 asyncts_filter_deps="avresample"
2148 atempo_filter_deps="avcodec rdft"
2149 azmq_filter_deps="libzmq"
2150 blackframe_filter_deps="gpl"
2151 boxblur_filter_deps="gpl"
2152 colormatrix_filter_deps="gpl"
2153 cropdetect_filter_deps="gpl"
2154 dctdnoiz_filter_deps="avcodec fft"
2155 delogo_filter_deps="gpl"
2156 deshake_filter_deps="avcodec"
2157 deshake_filter_select="dsputil"
2158 drawtext_filter_deps="libfreetype"
2159 ebur128_filter_deps="gpl"
2160 flite_filter_deps="libflite"
2161 frei0r_filter_deps="frei0r dlopen"
2162 frei0r_filter_extralibs='$ldl'
2163 frei0r_src_filter_deps="frei0r dlopen"
2164 frei0r_src_filter_extralibs='$ldl'
2165 geq_filter_deps="gpl"
2166 histeq_filter_deps="gpl"
2167 hqdn3d_filter_deps="gpl"
2168 hue_filter_deps="gpl"
2169 interlace_filter_deps="gpl"
2170 kerndeint_filter_deps="gpl"
2171 mcdeint_filter_deps="avcodec gpl"
2172 movie_filter_deps="avcodec avformat"
2173 mp_filter_deps="gpl avcodec swscale inline_asm"
2174 mpdecimate_filter_deps="gpl avcodec"
2175 mptestsrc_filter_deps="gpl"
2176 negate_filter_deps="lut_filter"
2177 noise_filter_deps="gpl"
2178 perspective_filter_deps="gpl"
2179 resample_filter_deps="avresample"
2180 ocv_filter_deps="libopencv"
2181 owdenoise_filter_deps="gpl"
2182 pan_filter_deps="swresample"
2183 pp_filter_deps="gpl postproc"
2184 removelogo_filter_deps="avcodec avformat swscale"
2185 sab_filter_deps="gpl swscale"
2186 scale_filter_deps="swscale"
2187 smartblur_filter_deps="gpl swscale"
2188 showspectrum_filter_deps="avcodec rdft"
2189 spp_filter_deps="gpl avcodec fft"
2190 stereo3d_filter_deps="gpl"
2191 subtitles_filter_deps="avformat avcodec libass"
2192 super2xsai_filter_deps="gpl"
2193 tinterlace_filter_deps="gpl"
2194 vidstabdetect_filter_deps="libvidstab"
2195 vidstabtransform_filter_deps="libvidstab"
2196 yadif_filter_deps="gpl"
2197 pixfmts_super2xsai_test_deps="super2xsai_filter"
2198 tinterlace_merge_test_deps="tinterlace_filter"
2199 tinterlace_pad_test_deps="tinterlace_filter"
2200 zmq_filter_deps="libzmq"
2201
2202 # libraries
2203 avcodec_deps="avutil"
2204 avdevice_deps="avutil avcodec avformat"
2205 avfilter_deps="avutil"
2206 avformat_deps="avutil avcodec"
2207 avresample_deps="avutil"
2208 postproc_deps="avutil gpl"
2209 swscale_deps="avutil"
2210
2211 # programs
2212 ffmpeg_deps="avcodec avfilter avformat swscale swresample"
2213 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2214                null_filter
2215                setpts_filter trim_filter"
2216 ffplay_deps="avcodec avformat swscale swresample sdl"
2217 ffplay_select="rdft crop_filter"
2218 ffprobe_deps="avcodec avformat"
2219 ffserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer sarestart"
2220 ffserver_extralibs='$ldl'
2221
2222 # documentation
2223 podpages_deps="perl"
2224 manpages_deps="perl pod2man"
2225 htmlpages_deps="texi2html"
2226 txtpages_deps="makeinfo"
2227 doc_deps_any="manpages htmlpages podpages txtpages"
2228
2229 # default parameters
2230
2231 logfile="config.log"
2232
2233 # installation paths
2234 prefix_default="/usr/local"
2235 bindir_default='${prefix}/bin'
2236 datadir_default='${prefix}/share/ffmpeg'
2237 incdir_default='${prefix}/include'
2238 libdir_default='${prefix}/lib'
2239 mandir_default='${prefix}/share/man'
2240 shlibdir_default="$libdir_default"
2241
2242 # toolchain
2243 ar_default="ar"
2244 cc_default="gcc"
2245 cxx_default="g++"
2246 host_cc_default="gcc"
2247 cp_f="cp -f"
2248 install="install"
2249 ln_s="ln -s -f"
2250 nm_default="nm -g"
2251 objformat="elf"
2252 pkg_config_default=pkg-config
2253 ranlib="ranlib"
2254 strip_default="strip"
2255 yasmexe_default="yasm"
2256
2257 nogas=":"
2258
2259 # machine
2260 arch_default=$(uname -m)
2261 cpu="generic"
2262
2263 # OS
2264 target_os_default=$(tolower $(uname -s))
2265 host_os=$target_os_default
2266
2267 # configurable options
2268 enable $PROGRAM_LIST
2269 enable $DOCUMENT_LIST
2270 enable $(filter_out avresample $LIBRARY_LIST)
2271 enable stripping
2272
2273 enable asm
2274 enable debug
2275 enable doc
2276 enable optimizations
2277 enable runtime_cpudetect
2278 enable safe_bitstream_reader
2279 enable static
2280 enable swscale_alpha
2281
2282 # Enable hwaccels by default.
2283 enable dxva2 vaapi vdpau
2284
2285 # build settings
2286 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2287 LIBPREF="lib"
2288 LIBSUF=".a"
2289 FULLNAME='$(NAME)$(BUILDSUF)'
2290 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2291 SLIBPREF="lib"
2292 SLIBSUF=".so"
2293 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2294 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2295 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2296 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2297 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2298 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2299
2300 asflags_filter=echo
2301 cflags_filter=echo
2302 ldflags_filter=echo
2303
2304 AS_C='-c'
2305 AS_O='-o $@'
2306 CC_C='-c'
2307 CC_E='-E -o $@'
2308 CC_O='-o $@'
2309 CXX_C='-c'
2310 CXX_O='-o $@'
2311 LD_O='-o $@'
2312 LD_LIB='-l%'
2313 LD_PATH='-L'
2314 HOSTCC_C='-c'
2315 HOSTCC_O='-o $@'
2316 HOSTLD_O='-o $@'
2317
2318 host_cflags='-O3 -g'
2319 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
2320 host_libs='-lm'
2321 host_cflags_filter=echo
2322 host_ldflags_filter=echo
2323
2324 target_path='$(CURDIR)'
2325
2326 # since the object filename is not given with the -MM flag, the compiler
2327 # is only able to print the basename, and we must add the path ourselves
2328 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2329 DEPFLAGS='-MM'
2330
2331 # find source path
2332 if test -f configure; then
2333     source_path=.
2334 else
2335     source_path=$(cd $(dirname "$0"); pwd)
2336     echo "$source_path" | grep -q '[[:blank:]]' &&
2337         die "Out of tree builds are impossible with whitespace in source path."
2338     test -e "$source_path/config.h" &&
2339         die "Out of tree builds are impossible with config.h in source dir."
2340 fi
2341
2342 for v in "$@"; do
2343     r=${v#*=}
2344     l=${v%"$r"}
2345     r=$(sh_quote "$r")
2346     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2347 done
2348
2349 find_things(){
2350     thing=$1
2351     pattern=$2
2352     file=$source_path/$3
2353     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2354 }
2355
2356 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2357 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2358 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2359 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2360 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2361 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2362 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2363 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2364 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2365 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2366 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2367
2368 ALL_COMPONENTS="
2369     $BSF_LIST
2370     $DECODER_LIST
2371     $DEMUXER_LIST
2372     $ENCODER_LIST
2373     $FILTER_LIST
2374     $HWACCEL_LIST
2375     $INDEV_LIST
2376     $MUXER_LIST
2377     $OUTDEV_LIST
2378     $PARSER_LIST
2379     $PROTOCOL_LIST
2380 "
2381
2382 for n in $COMPONENT_LIST; do
2383     v=$(toupper ${n%s})_LIST
2384     eval enable \$$v
2385     eval ${n}_if_any="\$$v"
2386 done
2387
2388 enable $ARCH_EXT_LIST
2389
2390 die_unknown(){
2391     echo "Unknown option \"$1\"."
2392     echo "See $0 --help for available options."
2393     exit 1
2394 }
2395
2396 print_3_columns() {
2397     cat | tr ' ' '\n' | sort | pr -r -3 -t
2398 }
2399
2400 show_list() {
2401     suffix=_$1
2402     shift
2403     echo $* | sed s/$suffix//g | print_3_columns
2404     exit 0
2405 }
2406
2407 rand_list(){
2408     IFS=', '
2409     set -- $*
2410     unset IFS
2411     for thing; do
2412         comp=${thing%:*}
2413         prob=${thing#$comp}
2414         prob=${prob#:}
2415         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2416         echo "prob ${prob:-0.5}"
2417         printf '%s\n' $comp
2418     done
2419 }
2420
2421 do_random(){
2422     action=$1
2423     shift
2424     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2425     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2426 }
2427
2428 for opt do
2429     optval="${opt#*=}"
2430     case "$opt" in
2431         --extra-ldflags=*)
2432             add_ldflags $optval
2433         ;;
2434         --extra-libs=*)
2435             add_extralibs $optval
2436         ;;
2437         --disable-devices)
2438             disable $INDEV_LIST $OUTDEV_LIST
2439         ;;
2440         --enable-debug=*)
2441             debuglevel="$optval"
2442         ;;
2443         --disable-programs)
2444             disable $PROGRAM_LIST
2445         ;;
2446         --disable-everything)
2447             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2448         ;;
2449         --disable-all)
2450             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2451             disable $LIBRARY_LIST $PROGRAM_LIST doc
2452         ;;
2453         --enable-random|--disable-random)
2454             action=${opt%%-random}
2455             do_random ${action#--} $COMPONENT_LIST
2456         ;;
2457         --enable-random=*|--disable-random=*)
2458             action=${opt%%-random=*}
2459             do_random ${action#--} $optval
2460         ;;
2461         --enable-*=*|--disable-*=*)
2462             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2463             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2464             eval list=\$$(toupper $thing)_LIST
2465             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2466             list=$(filter "$name" $list)
2467             [ "$list" = "" ] && warn "Option $opt did not match anything"
2468             $action $list
2469         ;;
2470         --enable-?*|--disable-?*)
2471             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2472             if is_in $option $COMPONENT_LIST; then
2473                 test $action = disable && action=unset
2474                 eval $action \$$(toupper ${option%s})_LIST
2475             elif is_in $option $CMDLINE_SELECT; then
2476                 $action $option
2477             else
2478                 die_unknown $opt
2479             fi
2480         ;;
2481         --list-*)
2482             NAME="${opt#--list-}"
2483             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2484             NAME=${NAME%s}
2485             eval show_list $NAME \$$(toupper $NAME)_LIST
2486         ;;
2487         --help|-h) show_help
2488         ;;
2489         --fatal-warnings) enable fatal_warnings
2490         ;;
2491         *)
2492             optname="${opt%%=*}"
2493             optname="${optname#--}"
2494             optname=$(echo "$optname" | sed 's/-/_/g')
2495             if is_in $optname $CMDLINE_SET; then
2496                 eval $optname='$optval'
2497             elif is_in $optname $CMDLINE_APPEND; then
2498                 append $optname "$optval"
2499             else
2500                 die_unknown $opt
2501             fi
2502         ;;
2503     esac
2504 done
2505
2506 disabled logging && logfile=/dev/null
2507
2508 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2509 set >> $logfile
2510
2511 test -n "$cross_prefix" && enable cross_compile
2512
2513 if enabled cross_compile; then
2514     test -n "$arch" && test -n "$target_os" ||
2515         die "Must specify target arch and OS when cross-compiling"
2516 fi
2517
2518 ar_default="${cross_prefix}${ar_default}"
2519 cc_default="${cross_prefix}${cc_default}"
2520 cxx_default="${cross_prefix}${cxx_default}"
2521 nm_default="${cross_prefix}${nm_default}"
2522 pkg_config_default="${cross_prefix}${pkg_config_default}"
2523 ranlib="${cross_prefix}${ranlib}"
2524 strip_default="${cross_prefix}${strip_default}"
2525
2526 sysinclude_default="${sysroot}/usr/include"
2527
2528 test -n "$valgrind" && toolchain="valgrind-memcheck"
2529
2530 case "$toolchain" in
2531     clang-asan)
2532         cc_default="clang"
2533         add_cflags  -fsanitize=address
2534         add_ldflags -fsanitize=address
2535     ;;
2536     clang-tsan)
2537         cc_default="clang"
2538         add_cflags  -fsanitize=thread -pie
2539         add_ldflags -fsanitize=thread -pie
2540     ;;
2541     gcc-asan)
2542         cc_default="gcc"
2543         add_cflags  -fsanitize=address
2544         add_ldflags -fsanitize=address
2545     ;;
2546     gcc-tsan)
2547         cc_default="gcc"
2548         add_cflags  -fsanitize=thread -pie -fPIC
2549         add_ldflags -fsanitize=thread -pie -fPIC
2550     ;;
2551     valgrind-massif)
2552         target_exec_default=${valgrind:-"valgrind"}
2553         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"
2554     ;;
2555     valgrind-memcheck)
2556         target_exec_default=${valgrind:-"valgrind"}
2557         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2558     ;;
2559     msvc)
2560         cc_default="c99wrap cl"
2561         ld_default="c99wrap link"
2562         nm_default="dumpbin -symbols"
2563         ar_default="lib"
2564         target_os_default="win32"
2565     ;;
2566     icl)
2567         cc_default="c99wrap -noconv icl"
2568         ld_default="c99wrap xilink"
2569         nm_default="dumpbin -symbols"
2570         ar_default="xilib"
2571         target_os_default="win32"
2572     ;;
2573     gcov)
2574         add_cflags  -fprofile-arcs -ftest-coverage
2575         add_ldflags -fprofile-arcs -ftest-coverage
2576     ;;
2577     ?*)
2578         die "Unknown toolchain $toolchain"
2579     ;;
2580 esac
2581
2582 set_default arch cc cxx pkg_config strip sysinclude target_exec target_os yasmexe
2583 enabled cross_compile || host_cc_default=$cc
2584 set_default host_cc
2585
2586 if ! $pkg_config --version >/dev/null 2>&1; then
2587     warn "$pkg_config not found, library detection may fail."
2588     pkg_config=false
2589 fi
2590
2591 exesuf() {
2592     case $1 in
2593         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2594     esac
2595 }
2596
2597 EXESUF=$(exesuf $target_os)
2598 HOSTEXESUF=$(exesuf $host_os)
2599
2600 # set temporary file name
2601 : ${TMPDIR:=$TEMPDIR}
2602 : ${TMPDIR:=$TMP}
2603 : ${TMPDIR:=/tmp}
2604
2605 if ! check_cmd mktemp -u XXXXXX; then
2606     # simple replacement for missing mktemp
2607     # NOT SAFE FOR GENERAL USE
2608     mktemp(){
2609         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2610     }
2611 fi
2612
2613 tmpfile(){
2614     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2615         (set -C; exec > $tmp) 2>/dev/null ||
2616         die "Unable to create temporary file in $TMPDIR."
2617     append TMPFILES $tmp
2618     eval $1=$tmp
2619 }
2620
2621 trap 'rm -f -- $TMPFILES' EXIT
2622
2623 tmpfile TMPASM .asm
2624 tmpfile TMPC   .c
2625 tmpfile TMPCPP .cpp
2626 tmpfile TMPE   $EXESUF
2627 tmpfile TMPH   .h
2628 tmpfile TMPO   .o
2629 tmpfile TMPS   .S
2630 tmpfile TMPSH  .sh
2631 tmpfile TMPV   .ver
2632
2633 unset -f mktemp
2634
2635 chmod +x $TMPE
2636
2637 # make sure we can execute files in $TMPDIR
2638 cat > $TMPSH 2>> $logfile <<EOF
2639 #! /bin/sh
2640 EOF
2641 chmod +x $TMPSH >> $logfile 2>&1
2642 if ! $TMPSH >> $logfile 2>&1; then
2643     cat <<EOF
2644 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2645 variable to another directory and make sure that it is not mounted noexec.
2646 EOF
2647     die "Sanity test failed."
2648 fi
2649
2650 ccc_flags(){
2651     for flag; do
2652         case $flag in
2653             -std=c99)           echo -c99                       ;;
2654             -mcpu=*)            echo -arch ${flag#*=}           ;;
2655             -mieee)             echo -ieee                      ;;
2656             -O*|-fast)          echo $flag                      ;;
2657             -fno-math-errno)    echo -assume nomath_errno       ;;
2658             -g)                 echo -g3                        ;;
2659             -Wall)              echo -msg_enable level2         ;;
2660             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2661             -Wl,*)              echo $flag                      ;;
2662             -f*|-W*)                                            ;;
2663             *)                  echo $flag                      ;;
2664         esac
2665    done
2666 }
2667
2668 msvc_common_flags(){
2669     for flag; do
2670         case $flag in
2671             # In addition to specifying certain flags under the compiler
2672             # specific filters, they must be specified here as well or else the
2673             # generic catch all at the bottom will print the original flag.
2674             -Wall)                ;;
2675             -std=c99)             ;;
2676             # Common flags
2677             -fomit-frame-pointer) ;;
2678             -g)                   echo -Z7 ;;
2679             -fno-math-errno)      ;;
2680             -fno-common)          ;;
2681             -fno-signed-zeros)    ;;
2682             -fPIC)                ;;
2683             -mthumb)              ;;
2684             -march=*)             ;;
2685             -lz)                  echo zlib.lib ;;
2686             -lavifil32)           echo vfw32.lib ;;
2687             -lavicap32)           echo vfw32.lib user32.lib ;;
2688             -l*)                  echo ${flag#-l}.lib ;;
2689             *)                    echo $flag ;;
2690         esac
2691     done
2692 }
2693
2694 msvc_flags(){
2695     msvc_common_flags "$@"
2696     for flag; do
2697         case $flag in
2698             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2699                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2700                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2701                                        -wd4554 \
2702                                        -wd4996 -wd4273 ;;
2703         esac
2704     done
2705 }
2706
2707 icl_flags(){
2708     msvc_common_flags "$@"
2709     for flag; do
2710         case $flag in
2711             # Despite what Intel's documentation says -Wall, which is supported
2712             # on Windows, does enable remarks so disable them here.
2713             -Wall)                echo $flag -Qdiag-disable:remark ;;
2714             -std=c99)             echo -Qstd=c99 ;;
2715         esac
2716     done
2717 }
2718
2719 pgi_flags(){
2720     for flag; do
2721         case $flag in
2722             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2723             -fomit-frame-pointer) echo -Mnoframe ;;
2724             -g)                   echo -gopt ;;
2725             *)                    echo $flag ;;
2726         esac
2727     done
2728 }
2729
2730 suncc_flags(){
2731     for flag; do
2732         case $flag in
2733             -march=*|-mcpu=*)
2734                 case "${flag#*=}" in
2735                     native)                   echo -xtarget=native       ;;
2736                     v9|niagara)               echo -xarch=sparc          ;;
2737                     ultrasparc)               echo -xarch=sparcvis       ;;
2738                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2739                     i586|pentium)             echo -xchip=pentium        ;;
2740                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2741                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2742                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2743                     pentium4*)          echo -xtarget=pentium4           ;;
2744                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2745                     *-sse3)             echo -xarch=sse3                 ;;
2746                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2747                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2748                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2749                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
2750                     bdver*)                    echo -xarch=avx           ;;
2751                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2752                     k8|opteron|athlon64|athlon-fx)
2753                                                echo -xarch=sse2a         ;;
2754                     athlon*)                   echo -xarch=pentium_proa  ;;
2755                 esac
2756                 ;;
2757             -std=c99)             echo -xc99              ;;
2758             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2759             -fPIC)                echo -KPIC -xcode=pic32 ;;
2760             -W*,*)                echo $flag              ;;
2761             -f*-*|-W*|-mimpure-text)                      ;;
2762             -shared)              echo -G                 ;;
2763             *)                    echo $flag              ;;
2764         esac
2765     done
2766 }
2767
2768 tms470_flags(){
2769     for flag; do
2770         case $flag in
2771             -march=*|-mcpu=*)
2772                 case "${flag#*=}" in
2773                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2774                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2775                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2776                     armv6*|arm11*)          echo -mv=6   ;;
2777                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2778                                             echo -mv=5e  ;;
2779                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2780                 esac
2781                 ;;
2782             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2783             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2784             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2785             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2786             -msoft-float)   echo --float_support=vfplib       ;;
2787             -O[0-3]|-mf=*)  echo $flag                        ;;
2788             -g)             echo -g -mn                       ;;
2789             -pds=*)         echo $flag                        ;;
2790             -D*|-I*)        echo $flag                        ;;
2791             --gcc|--abi=*)  echo $flag                        ;;
2792             -me)            echo $flag                        ;;
2793         esac
2794     done
2795 }
2796
2797 probe_cc(){
2798     pfx=$1
2799     _cc=$2
2800
2801     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2802     unset _ld_o _ldflags _ld_lib _ld_path
2803     unset _depflags _DEPCMD _DEPFLAGS
2804     _flags_filter=echo
2805
2806     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2807         _type=llvm_gcc
2808         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2809         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2810         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2811         _cflags_speed='-O3'
2812         _cflags_size='-Os'
2813     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2814         _type=gcc
2815         gcc_version=$($_cc --version | head -n1)
2816         gcc_basever=$($_cc -dumpversion)
2817         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2818         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2819         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2820         if ! $_cc -dumpversion | grep -q '^2\.'; then
2821             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2822         fi
2823         _cflags_speed='-O3'
2824         _cflags_size='-Os'
2825     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2826         _type=icc
2827         _ident=$($_cc --version | head -n1)
2828         _depflags='-MMD'
2829         _cflags_speed='-O3'
2830         _cflags_size='-Os'
2831         _cflags_noopt='-O1'
2832     elif $_cc -v 2>&1 | grep -q xlc; then
2833         _type=xlc
2834         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2835         _cflags_speed='-O5'
2836         _cflags_size='-O5 -qcompact'
2837     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2838         _type=ccc
2839         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2840         _DEPFLAGS='-M'
2841         _cflags_speed='-fast'
2842         _cflags_size='-O1'
2843         _flags_filter=ccc_flags
2844     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2845         test -d "$sysroot" || die "No valid sysroot specified."
2846         _type=armcc
2847         _ident=$($_cc --vsn | head -n1)
2848         armcc_conf="$PWD/armcc.conf"
2849         $_cc --arm_linux_configure                 \
2850              --arm_linux_config_file="$armcc_conf" \
2851              --configure_sysroot="$sysroot"        \
2852              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2853              die "Error creating armcc configuration file."
2854         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2855         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2856         as_default="${cross_prefix}gcc"
2857         _depflags='-MMD'
2858         _cflags_speed='-O3'
2859         _cflags_size='-Os'
2860     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2861         _type=tms470
2862         _ident=$($_cc -version | head -n1 | tr -s ' ')
2863         _flags='--gcc --abi=eabi -me'
2864         _cc_e='-ppl -fe=$@'
2865         _cc_o='-fe=$@'
2866         _depflags='-ppa -ppd=$(@:.o=.d)'
2867         _cflags_speed='-O3 -mf=5'
2868         _cflags_size='-O3 -mf=2'
2869         _flags_filter=tms470_flags
2870     elif $_cc -v 2>&1 | grep -q clang; then
2871         _type=clang
2872         _ident=$($_cc --version | head -n1)
2873         _depflags='-MMD'
2874         _cflags_speed='-O3'
2875         _cflags_size='-Os'
2876     elif $_cc -V 2>&1 | grep -q Sun; then
2877         _type=suncc
2878         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2879         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2880         _DEPFLAGS='-xM1 -xc99'
2881         _ldflags='-std=c99'
2882         _cflags_speed='-O5'
2883         _cflags_size='-O5 -xspace'
2884         _flags_filter=suncc_flags
2885     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2886         _type=pathscale
2887         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2888         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2889         _cflags_speed='-O2'
2890         _cflags_size='-Os'
2891         _flags_filter='filter_out -Wdisabled-optimization'
2892     elif $_cc -v 2>&1 | grep -q Open64; then
2893         _type=open64
2894         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2895         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2896         _cflags_speed='-O2'
2897         _cflags_size='-Os'
2898         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2899     elif $_cc -V 2>&1 | grep -q Portland; then
2900         _type=pgi
2901         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2902         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2903         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2904         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2905         _cflags_noopt="-O"
2906         _flags_filter=pgi_flags
2907     elif $_cc 2>&1 | grep -q Microsoft; then
2908         _type=msvc
2909         _ident=$($cc 2>&1 | head -n1)
2910         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2911         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2912         _cflags_speed="-O2"
2913         _cflags_size="-O1"
2914         # Nonstandard output options, to avoid msys path conversion issues.
2915         # Relies on wrapper to remap it.
2916         if $_cc 2>&1 | grep -q Linker; then
2917             _ld_o='-out $@'
2918         else
2919             _ld_o='-Fe$@'
2920         fi
2921         _cc_o='-Fo $@'
2922         _cc_e='-P -Fi $@'
2923         _flags_filter=msvc_flags
2924         _ld_lib='lib%.a'
2925         _ld_path='-libpath:'
2926         _flags='-nologo'
2927         _cflags='-D_USE_MATH_DEFINES -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2928         if [ $pfx = hostcc ]; then
2929             append _cflags -Dsnprintf=_snprintf
2930         fi
2931         disable stripping
2932     elif $_cc 2>&1 | grep -q Intel; then
2933         _type=icl
2934         _ident=$($cc 2>&1 | head -n1)
2935         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2936         # Not only is O3 broken on 13.x+ but it is slower on all previous
2937         # versions (tested) as well.
2938         _cflags_speed="-O2"
2939         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2940         # Nonstandard output options, to avoid msys path conversion issues.
2941         # Relies on wrapper to remap it.
2942         if $_cc 2>&1 | grep -q Linker; then
2943             _ld_o='-out $@'
2944         else
2945             _ld_o='-Fe$@'
2946         fi
2947         _cc_o='-Fo $@'
2948         _cc_e='-P'
2949         _flags_filter=icl_flags
2950         _ld_lib='lib%.a'
2951         _ld_path='-libpath:'
2952         # -Qdiag-error to make icl error when seeing certain unknown arguments
2953         _flags='-nologo -Qdiag-error:4044,10157'
2954         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
2955         # with MSVC which enables it by default.
2956         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
2957         if [ $pfx = hostcc ]; then
2958             append _cflags -Dsnprintf=_snprintf
2959         fi
2960     fi
2961
2962     eval ${pfx}_type=\$_type
2963     eval ${pfx}_ident=\$_ident
2964 }
2965
2966 set_ccvars(){
2967     eval ${1}_C=\${_cc_c-\${${1}_C}}
2968     eval ${1}_E=\${_cc_e-\${${1}_E}}
2969     eval ${1}_O=\${_cc_o-\${${1}_O}}
2970
2971     if [ -n "$_depflags" ]; then
2972         eval ${1}_DEPFLAGS=\$_depflags
2973     else
2974         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2975         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2976         eval DEP${1}FLAGS=\$_flags
2977     fi
2978 }
2979
2980 probe_cc cc "$cc"
2981 cflags_filter=$_flags_filter
2982 cflags_speed=$_cflags_speed
2983 cflags_size=$_cflags_size
2984 cflags_noopt=$_cflags_noopt
2985 add_cflags $_flags $_cflags
2986 cc_ldflags=$_ldflags
2987 set_ccvars CC
2988
2989 probe_cc hostcc "$host_cc"
2990 host_cflags_filter=$_flags_filter
2991 add_host_cflags  $_flags $_cflags
2992 set_ccvars HOSTCC
2993
2994 test -n "$cc_type" && enable $cc_type ||
2995     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2996
2997 : ${as_default:=$cc}
2998 : ${dep_cc_default:=$cc}
2999 : ${ld_default:=$cc}
3000 : ${host_ld_default:=$host_cc}
3001 set_default ar as dep_cc ld host_ld
3002
3003 probe_cc as "$as"
3004 asflags_filter=$_flags_filter
3005 add_asflags $_flags $_cflags
3006 set_ccvars AS
3007
3008 probe_cc ld "$ld"
3009 ldflags_filter=$_flags_filter
3010 add_ldflags $_flags $_ldflags
3011 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3012 LD_O=${_ld_o-$LD_O}
3013 LD_LIB=${_ld_lib-$LD_LIB}
3014 LD_PATH=${_ld_path-$LD_PATH}
3015
3016 probe_cc hostld "$host_ld"
3017 host_ldflags_filter=$_flags_filter
3018 add_host_ldflags $_flags $_ldflags
3019 HOSTLD_O=${_ld_o-$HOSTLD_O}
3020
3021 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3022     probe_cc depcc "$dep_cc"
3023     CCDEP=${_DEPCMD:-$DEPCMD}
3024     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3025     DEPCCFLAGS=$_flags
3026 fi
3027
3028 if $ar 2>&1 | grep -q Microsoft; then
3029     arflags="-nologo"
3030     ar_o='-out:$@'
3031 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3032     arflags="rq"
3033     ar_o='$@'
3034 else
3035     arflags="rc"
3036     ar_o='$@'
3037 fi
3038
3039 add_cflags $extra_cflags
3040 add_cxxflags $extra_cxxflags
3041 add_asflags $extra_cflags
3042
3043 if test -n "$sysroot"; then
3044     case "$cc_type" in
3045         gcc|llvm_gcc|clang)
3046             add_cppflags --sysroot="$sysroot"
3047             add_ldflags --sysroot="$sysroot"
3048         ;;
3049         tms470)
3050             add_cppflags -I"$sysinclude"
3051             add_ldflags  --sysroot="$sysroot"
3052         ;;
3053     esac
3054 fi
3055
3056 if test "$cpu" = host; then
3057     enabled cross_compile &&
3058         die "--cpu=host makes no sense when cross-compiling."
3059
3060     case "$cc_type" in
3061         gcc|llvm_gcc)
3062             check_native(){
3063                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3064                 sed -n "/cc1.*$1=/{
3065                             s/.*$1=\\([^ ]*\\).*/\\1/
3066                             p
3067                             q
3068                         }" $TMPE
3069             }
3070             cpu=$(check_native -march || check_native -mcpu)
3071         ;;
3072     esac
3073
3074     test "${cpu:-host}" = host &&
3075         die "--cpu=host not supported with compiler $cc"
3076 fi
3077
3078 # Deal with common $arch aliases
3079 case "$arch" in
3080     aarch64|arm64)
3081         arch="aarch64"
3082     ;;
3083     arm*|iPad*|iPhone*)
3084         arch="arm"
3085     ;;
3086     mips*|IP*)
3087         arch="mips"
3088     ;;
3089     parisc*|hppa*)
3090         arch="parisc"
3091     ;;
3092     "Power Macintosh"|ppc*|powerpc*)
3093         arch="ppc"
3094     ;;
3095     s390|s390x)
3096         arch="s390"
3097     ;;
3098     sh4|sh)
3099         arch="sh4"
3100     ;;
3101     sun4u|sparc*)
3102         arch="sparc"
3103     ;;
3104     tilegx|tile-gx)
3105         arch="tilegx"
3106     ;;
3107     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3108         arch="x86"
3109     ;;
3110 esac
3111
3112 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3113 enable $arch
3114
3115 # Add processor-specific flags
3116 if enabled aarch64; then
3117
3118     case $cpu in
3119         armv*)
3120             cpuflags="-march=$cpu"
3121         ;;
3122         *)
3123             cpuflags="-mcpu=$cpu"
3124         ;;
3125     esac
3126
3127 elif enabled alpha; then
3128
3129     cpuflags="-mcpu=$cpu"
3130
3131 elif enabled arm; then
3132
3133     check_arm_arch() {
3134         check_cpp_condition stddef.h \
3135             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3136             $cpuflags
3137     }
3138
3139     probe_arm_arch() {
3140         if   check_arm_arch 4;        then echo armv4;
3141         elif check_arm_arch 4T;       then echo armv4t;
3142         elif check_arm_arch 5;        then echo armv5;
3143         elif check_arm_arch 5E;       then echo armv5e;
3144         elif check_arm_arch 5T;       then echo armv5t;
3145         elif check_arm_arch 5TE;      then echo armv5te;
3146         elif check_arm_arch 5TEJ;     then echo armv5te;
3147         elif check_arm_arch 6;        then echo armv6;
3148         elif check_arm_arch 6J;       then echo armv6j;
3149         elif check_arm_arch 6K;       then echo armv6k;
3150         elif check_arm_arch 6Z;       then echo armv6z;
3151         elif check_arm_arch 6ZK;      then echo armv6zk;
3152         elif check_arm_arch 6T2;      then echo armv6t2;
3153         elif check_arm_arch 7;        then echo armv7;
3154         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3155         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3156         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3157         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3158         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3159         fi
3160     }
3161
3162     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3163
3164     case $cpu in
3165         armv*)
3166             cpuflags="-march=$cpu"
3167             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3168         ;;
3169         *)
3170             cpuflags="-mcpu=$cpu"
3171             case $cpu in
3172                 cortex-a*)                               subarch=armv7a  ;;
3173                 cortex-r*)                               subarch=armv7r  ;;
3174                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3175                 arm11*)                                  subarch=armv6   ;;
3176                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3177                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3178                 *)                             subarch=$(probe_arm_arch) ;;
3179             esac
3180         ;;
3181     esac
3182
3183     case "$subarch" in
3184         armv5t*)    enable fast_clz                ;;
3185         armv[6-8]*) enable fast_clz fast_unaligned ;;
3186     esac
3187
3188 elif enabled avr32; then
3189
3190     case $cpu in
3191         ap7[02]0[0-2])
3192             subarch="avr32_ap"
3193             cpuflags="-mpart=$cpu"
3194         ;;
3195         ap)
3196             subarch="avr32_ap"
3197             cpuflags="-march=$cpu"
3198         ;;
3199         uc3[ab]*)
3200             subarch="avr32_uc"
3201             cpuflags="-mcpu=$cpu"
3202         ;;
3203         uc)
3204             subarch="avr32_uc"
3205             cpuflags="-march=$cpu"
3206         ;;
3207     esac
3208
3209 elif enabled bfin; then
3210
3211     cpuflags="-mcpu=$cpu"
3212
3213 elif enabled mips; then
3214
3215     cpuflags="-march=$cpu"
3216
3217     case $cpu in
3218         24kc)
3219             disable mipsfpu
3220             disable mipsdspr1
3221             disable mipsdspr2
3222         ;;
3223         24kf*)
3224             disable mipsdspr1
3225             disable mipsdspr2
3226         ;;
3227         24kec|34kc|1004kc)
3228             disable mipsfpu
3229             disable mipsdspr2
3230         ;;
3231         24kef*|34kf*|1004kf*)
3232             disable mipsdspr2
3233         ;;
3234         74kc)
3235             disable mipsfpu
3236         ;;
3237     esac
3238
3239 elif enabled ppc; then
3240
3241     case $(tolower $cpu) in
3242         601|ppc601|powerpc601)
3243             cpuflags="-mcpu=601"
3244             disable altivec
3245         ;;
3246         603*|ppc603*|powerpc603*)
3247             cpuflags="-mcpu=603"
3248             disable altivec
3249         ;;
3250         604*|ppc604*|powerpc604*)
3251             cpuflags="-mcpu=604"
3252             disable altivec
3253         ;;
3254         g3|75*|ppc75*|powerpc75*)
3255             cpuflags="-mcpu=750"
3256             disable altivec
3257         ;;
3258         g4|745*|ppc745*|powerpc745*)
3259             cpuflags="-mcpu=7450"
3260         ;;
3261         74*|ppc74*|powerpc74*)
3262             cpuflags="-mcpu=7400"
3263         ;;
3264         g5|970|ppc970|powerpc970)
3265             cpuflags="-mcpu=970"
3266         ;;
3267         power[3-7]*)
3268             cpuflags="-mcpu=$cpu"
3269         ;;
3270         cell)
3271             cpuflags="-mcpu=cell"
3272             enable ldbrx
3273         ;;
3274         e500mc)
3275             cpuflags="-mcpu=e500mc"
3276             disable altivec
3277         ;;
3278         e500v2)
3279             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3280             disable altivec
3281         ;;
3282         e500)
3283             cpuflags="-mcpu=8540 -mhard-float"
3284             disable altivec
3285         ;;
3286     esac
3287
3288 elif enabled sparc; then
3289
3290     case $cpu in
3291         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3292             cpuflags="-mcpu=$cpu"
3293             disable vis
3294         ;;
3295         ultrasparc*|niagara[234])
3296             cpuflags="-mcpu=$cpu"
3297         ;;
3298     esac
3299
3300 elif enabled x86; then
3301
3302     case $cpu in
3303         i[345]86|pentium)
3304             cpuflags="-march=$cpu"
3305             disable mmx
3306         ;;
3307         # targets that do NOT support nopl and conditional mov (cmov)
3308         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3309             cpuflags="-march=$cpu"
3310             disable i686
3311         ;;
3312         # targets that do support nopl and conditional mov (cmov)
3313         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3314             cpuflags="-march=$cpu"
3315             enable i686
3316             enable fast_cmov
3317         ;;
3318         # targets that do support conditional mov but on which it's slow
3319         pentium4|pentium4m|prescott|nocona)
3320             cpuflags="-march=$cpu"
3321             enable i686
3322             disable fast_cmov
3323         ;;
3324     esac
3325
3326 fi
3327
3328 if [ "$cpu" != generic ]; then
3329     add_cflags  $cpuflags
3330     add_asflags $cpuflags
3331 fi
3332
3333 # compiler sanity check
3334 check_exec <<EOF
3335 int main(void){ return 0; }
3336 EOF
3337 if test "$?" != 0; then
3338     echo "$cc is unable to create an executable file."
3339     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3340         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3341         echo "Only do this if you know what cross compiling means."
3342     fi
3343     die "C compiler test failed."
3344 fi
3345
3346 add_cppflags -D_ISOC99_SOURCE
3347 add_cxxflags -D__STDC_CONSTANT_MACROS
3348 check_cflags -std=c99
3349 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3350 #include <stdlib.h>
3351 EOF
3352 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3353 #include <stdlib.h>
3354 EOF
3355
3356 check_host_cflags -std=c99
3357 check_host_cflags -Wall
3358
3359 check_64bit(){
3360     arch32=$1
3361     arch64=$2
3362     expr=$3
3363     check_code cc "" "int test[2*($expr) - 1]" &&
3364         subarch=$arch64 || subarch=$arch32
3365 }
3366
3367 case "$arch" in
3368     aarch64|alpha|ia64)
3369         spic=$shared
3370     ;;
3371     mips)
3372         check_64bit mips mips64 '_MIPS_SIM > 1'
3373         spic=$shared
3374     ;;
3375     parisc)
3376         check_64bit parisc parisc64 'sizeof(void *) > 4'
3377         spic=$shared
3378     ;;
3379     ppc)
3380         check_64bit ppc ppc64 'sizeof(void *) > 4'
3381         spic=$shared
3382     ;;
3383     sparc)
3384         check_64bit sparc sparc64 'sizeof(void *) > 4'
3385         spic=$shared
3386     ;;
3387     x86)
3388         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3389         if test "$subarch" = "x86_64"; then
3390             spic=$shared
3391         fi
3392     ;;
3393     ppc)
3394         check_cc <<EOF && subarch="ppc64"
3395         int test[(int)sizeof(char*) - 7];
3396 EOF
3397     ;;
3398 esac
3399
3400 enable $subarch
3401 enabled spic && enable_weak pic
3402
3403 # OS specific
3404 case $target_os in
3405     aix)
3406         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3407         ;;
3408     haiku)
3409         prefix_default="/boot/common"
3410         network_extralibs="-lnetwork"
3411         host_libs=
3412         ;;
3413     sunos)
3414         SHFLAGS='-shared -Wl,-h,$$(@F)'
3415         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3416         network_extralibs="-lsocket -lnsl"
3417         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3418         # When using suncc to build, the Solaris linker will mark
3419         # an executable with each instruction set encountered by
3420         # the Solaris assembler.  As our libraries contain their own
3421         # guards for processor-specific code, instead suppress
3422         # generation of the HWCAPS ELF section on Solaris x86 only.
3423         enabled_all suncc x86 &&
3424             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3425             add_ldflags -Wl,-M,mapfile
3426         nm_default='nm -P -g'
3427         ;;
3428     netbsd)
3429         disable symver
3430         oss_indev_extralibs="-lossaudio"
3431         oss_outdev_extralibs="-lossaudio"
3432         enabled gcc || check_ldflags -Wl,-zmuldefs
3433         ;;
3434     openbsd|bitrig)
3435         disable symver
3436         SHFLAGS='-shared'
3437         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3438         SLIB_INSTALL_LINKS=
3439         oss_indev_extralibs="-lossaudio"
3440         oss_outdev_extralibs="-lossaudio"
3441         ;;
3442     dragonfly)
3443         disable symver
3444         ;;
3445     freebsd)
3446         ;;
3447     bsd/os)
3448         add_extralibs -lpoll -lgnugetopt
3449         strip="strip -d"
3450         ;;
3451     darwin)
3452         gas="gas-preprocessor.pl $cc"
3453         enabled ppc && add_asflags -force_cpusubtype_ALL
3454         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3455         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3456         strip="${strip} -x"
3457         add_ldflags -Wl,-dynamic,-search_paths_first
3458         SLIBSUF=".dylib"
3459         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3460         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3461         objformat="macho"
3462         enabled x86_64 && objformat="macho64"
3463         enabled_any pic shared ||
3464             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3465         ;;
3466     mingw32*)
3467         if test $target_os = "mingw32ce"; then
3468             disable network
3469         else
3470             target_os=mingw32
3471         fi
3472         LIBTARGET=i386
3473         if enabled x86_64; then
3474             LIBTARGET="i386:x86-64"
3475         elif enabled arm; then
3476             LIBTARGET=arm-wince
3477         fi
3478         check_ldflags -Wl,--nxcompat
3479         check_ldflags -Wl,--dynamicbase
3480         shlibdir_default="$bindir_default"
3481         SLIBPREF=""
3482         SLIBSUF=".dll"
3483         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3484         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3485         dlltool="${cross_prefix}dlltool"
3486         if check_cmd lib.exe -list; then
3487             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3488             if enabled x86_64; then
3489                 LIBTARGET=x64
3490             fi
3491         elif check_cmd $dlltool --version; then
3492             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3493         fi
3494         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3495         SLIB_INSTALL_LINKS=
3496         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3497         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3498         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3499         objformat="win32"
3500         ranlib=:
3501         enable dos_paths
3502         ;;
3503     win32|win64)
3504         if enabled shared; then
3505             # Link to the import library instead of the normal static library
3506             # for shared libs.
3507             LD_LIB='%.lib'
3508             # Cannot build shared and static libs at the same time with MSVC.
3509             disable static
3510         fi
3511         shlibdir_default="$bindir_default"
3512         SLIBPREF=""
3513         SLIBSUF=".dll"
3514         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3515         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3516         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3517         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3518         SLIB_INSTALL_LINKS=
3519         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3520         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3521         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3522         objformat="win32"
3523         ranlib=:
3524         enable dos_paths
3525         ;;
3526     cygwin*)
3527         target_os=cygwin
3528         shlibdir_default="$bindir_default"
3529         SLIBPREF="cyg"
3530         SLIBSUF=".dll"
3531         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3532         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3533         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3534         SLIB_INSTALL_LINKS=
3535         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3536         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3537         objformat="win32"
3538         enable dos_paths
3539         ;;
3540     *-dos|freedos|opendos)
3541         network_extralibs="-lsocket"
3542         objformat="coff"
3543         enable dos_paths
3544         add_cppflags -U__STRICT_ANSI__
3545         ;;
3546     linux)
3547         enable dv1394
3548         ;;
3549     irix*)
3550         target_os=irix
3551         ranlib="echo ignoring ranlib"
3552         ;;
3553     os/2*)
3554         strip="lxlite -CS"
3555         ln_s="cp -f"
3556         objformat="aout"
3557         add_cppflags -D_GNU_SOURCE
3558         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3559         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3560         LIBSUF="_s.a"
3561         SLIBPREF=""
3562         SLIBSUF=".dll"
3563         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3564         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3565         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3566             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3567             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3568             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3569             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3570             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3571         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3572             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3573         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3574         enable dos_paths
3575         enable_weak os2threads
3576         ;;
3577     gnu/kfreebsd)
3578         add_cppflags -D_BSD_SOURCE
3579         ;;
3580     gnu)
3581         ;;
3582     qnx)
3583         add_cppflags -D_QNX_SOURCE
3584         network_extralibs="-lsocket"
3585         ;;
3586     symbian)
3587         SLIBSUF=".dll"
3588         enable dos_paths
3589         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3590         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3591         add_ldflags -Wl,--target1-abs,--no-undefined \
3592                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3593                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3594         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3595                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3596                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3597         ;;
3598     osf1)
3599         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3600         ;;
3601     minix)
3602         ;;
3603     plan9)
3604         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3605                      -D_REENTRANT_SOURCE        \
3606                      -D_RESEARCH_SOURCE         \
3607                      -DFD_SETSIZE=96            \
3608                      -DHAVE_SOCK_OPTS
3609         add_compat strtod.o strtod=avpriv_strtod
3610         network_extralibs='-lbsd'
3611         exeobjs=compat/plan9/main.o
3612         disable ffserver
3613         cp_f='cp'
3614         ;;
3615     none)
3616         ;;
3617     *)
3618         die "Unknown OS '$target_os'."
3619         ;;
3620 esac
3621
3622 # determine libc flavour
3623
3624 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3625 if check_cpp_condition features.h "defined __UCLIBC__"; then
3626     libc_type=uclibc
3627     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3628 elif check_cpp_condition features.h "defined __GLIBC__"; then
3629     libc_type=glibc
3630     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3631 # MinGW headers can be installed on Cygwin, so check for newlib first.
3632 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3633     libc_type=newlib
3634     add_cppflags -U__STRICT_ANSI__
3635 elif check_header _mingw.h; then
3636     libc_type=mingw
3637     check_cpp_condition _mingw.h \
3638         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3639             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3640         die "ERROR: MinGW runtime version must be >= 3.15."
3641     add_cppflags -U__STRICT_ANSI__
3642     if check_cpp_condition _mingw.h "defined(__MINGW64_VERSION_MAJOR) && \
3643             __MINGW64_VERSION_MAJOR < 3"; then
3644         add_compat msvcrt/snprintf.o
3645         add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3646     else
3647         add_cppflags -D__USE_MINGW_ANSI_STDIO=1
3648     fi
3649 elif check_func_headers stdlib.h _get_doserrno; then
3650     libc_type=msvcrt
3651     add_compat strtod.o strtod=avpriv_strtod
3652     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3653                                  _snprintf=avpriv_snprintf  \
3654                                  vsnprintf=avpriv_vsnprintf
3655     # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3656     # 0x601 by default unless something else is set by the user.
3657     # This can easily lead to us detecting functions only present
3658     # in such new versions and producing binaries requiring windows 7.0.
3659     # Therefore explicitly set the default to XP unless the user has
3660     # set something else on the command line.
3661     check_cpp_condition stdlib.h "defined(_WIN32_WINNT)" || add_cppflags -D_WIN32_WINNT=0x0502
3662 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3663     libc_type=klibc
3664 elif check_cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3665     libc_type=bionic
3666     add_compat strtod.o strtod=avpriv_strtod
3667 fi
3668
3669 test -n "$libc_type" && enable $libc_type
3670
3671 # hacks for compiler/libc/os combinations
3672
3673 if enabled_all tms470 glibc; then
3674     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3675     add_cppflags -D__USER_LABEL_PREFIX__=
3676     add_cppflags -D__builtin_memset=memset
3677     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3678     add_cflags   -pds=48    # incompatible redefinition of macro
3679 fi
3680
3681 if enabled_all ccc glibc; then
3682     add_ldflags -Wl,-z,now  # calls to libots crash without this
3683 fi
3684
3685 esc(){
3686     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3687 }
3688
3689 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3690
3691 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3692
3693 set_default $PATHS_LIST
3694 set_default nm
3695
3696 # we need to build at least one lib type
3697 if ! enabled_any static shared; then
3698     cat <<EOF
3699 At least one library type must be built.
3700 Specify --enable-static to build the static libraries or --enable-shared to
3701 build the shared libraries as well. To only build the shared libraries specify
3702 --disable-static in addition to --enable-shared.
3703 EOF
3704     exit 1;
3705 fi
3706
3707 # backward compatibility layer for incompatible_libav/fork_abi
3708 enabled incompatible_fork_abi  && enable incompatible_libav_abi
3709 enabled incompatible_libav_abi && enable incompatible_fork_abi
3710
3711 die_license_disabled() {
3712     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3713 }
3714
3715 die_license_disabled_gpl() {
3716     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3717 }
3718
3719 die_license_disabled gpl frei0r
3720 die_license_disabled gpl libcdio
3721 die_license_disabled gpl libutvideo
3722 die_license_disabled gpl libvidstab
3723 die_license_disabled gpl libx264
3724 die_license_disabled gpl libxavs
3725 die_license_disabled gpl libxvid
3726 die_license_disabled gpl x11grab
3727
3728 die_license_disabled nonfree libaacplus
3729 die_license_disabled nonfree libfaac
3730 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
3731 enabled gpl && die_license_disabled_gpl nonfree openssl
3732
3733 die_license_disabled version3 libopencore_amrnb
3734 die_license_disabled version3 libopencore_amrwb
3735 die_license_disabled version3 libvo_aacenc
3736 die_license_disabled version3 libvo_amrwbenc
3737
3738 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3739
3740 disabled optimizations || check_cflags -fomit-frame-pointer
3741
3742 enable_weak_pic() {
3743     disabled pic && return
3744     enable pic
3745     add_cppflags -DPIC
3746     case "$target_os" in
3747     mingw*|cygwin*)
3748         ;;
3749     *)
3750         add_cflags -fPIC
3751         ;;
3752     esac
3753     add_asflags  -fPIC
3754 }
3755
3756 enabled pic && enable_weak_pic
3757
3758 check_cc <<EOF || die "Symbol mangling check failed."
3759 int ff_extern;
3760 EOF
3761 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3762 extern_prefix=${sym%%ff_extern*}
3763
3764 check_cc <<EOF && enable_weak inline_asm
3765 void foo(void) { __asm__ volatile ("" ::); }
3766 EOF
3767
3768 _restrict=
3769 for restrict_keyword in restrict __restrict__ __restrict; do
3770     check_cc <<EOF && _restrict=$restrict_keyword && break
3771 void foo(char * $restrict_keyword p);
3772 EOF
3773 done
3774
3775 check_cc <<EOF && enable attribute_packed
3776 struct { int x; } __attribute__((packed)) x;
3777 EOF
3778
3779 check_cc <<EOF && enable attribute_may_alias
3780 union { int x; } __attribute__((may_alias)) x;
3781 EOF
3782
3783 check_cc <<EOF || die "endian test failed"
3784 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3785 EOF
3786 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3787
3788 check_inline_asm inline_asm_labels '"1:\n"'
3789
3790 if enabled alpha; then
3791
3792     check_cflags -mieee
3793
3794 elif enabled arm; then
3795
3796     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
3797 float func(float a, float b){ return a+b; }
3798 EOF
3799
3800     enabled thumb && check_cflags -mthumb || check_cflags -marm
3801     nogas=die
3802
3803     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3804         enable vfp_args
3805     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3806         case "${cross_prefix:-$cc}" in
3807             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3808             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3809 __asm__ (".eabi_attribute 28, 1");
3810 int main(void) { return 0; }
3811 EOF
3812         esac
3813         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3814     fi
3815
3816     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3817     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3818     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3819     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3820     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3821     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3822
3823     [ $target_os = linux ] ||
3824         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3825             $ARCH_EXT_LIST_ARM
3826
3827     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3828     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3829
3830     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3831
3832 elif enabled mips; then
3833
3834     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3835     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
3836      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
3837     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
3838      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
3839     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
3840      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
3841     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
3842      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
3843
3844 elif enabled parisc; then
3845
3846     if enabled gcc; then
3847         case $($cc -dumpversion) in
3848             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3849         esac
3850     fi
3851
3852 elif enabled ppc; then
3853
3854     enable local_aligned_8 local_aligned_16
3855
3856     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3857     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3858     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3859     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3860
3861     # AltiVec flags: The FSF version of GCC differs from the Apple version
3862     if enabled altivec; then
3863         nogas=warn
3864         check_cflags -maltivec -mabi=altivec &&
3865         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3866         check_cflags -faltivec
3867
3868         # check if our compiler supports Motorola AltiVec C API
3869         check_cc <<EOF || disable altivec
3870 $inc_altivec_h
3871 int main(void) {
3872     vector signed int v1 = (vector signed int) { 0 };
3873     vector signed int v2 = (vector signed int) { 1 };
3874     v1 = vec_add(v1, v2);
3875     return 0;
3876 }
3877 EOF
3878
3879         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3880     fi
3881
3882 elif enabled sparc; then
3883
3884     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3885
3886 elif enabled x86; then
3887
3888     check_builtin rdtsc    intrin.h   "__rdtsc()"
3889     check_builtin mm_empty mmintrin.h "_mm_empty()"
3890
3891     enable local_aligned_8 local_aligned_16
3892
3893     # check whether EBP is available on x86
3894     # As 'i' is stored on the stack, this program will crash
3895     # if the base pointer is used to access it because the
3896     # base pointer is cleared in the inline assembly code.
3897     check_exec_crash <<EOF && enable ebp_available
3898 volatile int i=0;
3899 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3900 return i;
3901 EOF
3902
3903     # check whether EBX is available on x86
3904     check_inline_asm ebx_available '""::"b"(0)' &&
3905         check_inline_asm ebx_available '"":::"%ebx"'
3906
3907     # check whether xmm clobbers are supported
3908     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3909
3910     # check whether binutils is new enough to compile SSSE3/MMXEXT
3911     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3912     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3913
3914     if ! disabled_any asm mmx yasm; then
3915         if check_cmd $yasmexe --version; then
3916             enabled x86_64 && yasm_extra="-m amd64"
3917             yasm_debug="-g dwarf2"
3918         elif check_cmd nasm -v; then
3919             yasmexe=nasm
3920             yasm_debug="-g -F dwarf"
3921             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3922         fi
3923
3924         YASMFLAGS="-f $objformat $yasm_extra"
3925         enabled pic               && append YASMFLAGS "-DPIC"
3926         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3927         case "$objformat" in
3928             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3929         esac
3930
3931         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
3932             die "yasm not found, use --disable-yasm for a crippled build"
3933         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
3934         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3935         check_yasm "CPU amdnop" && enabled i686 && enable cpunop
3936     fi
3937
3938     case "$cpu" in
3939         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3940             disable fast_clz
3941         ;;
3942     esac
3943
3944 fi
3945
3946 if enabled asm; then
3947     as=${gas:=$as}
3948     check_as <<EOF && enable gnu_as || \
3949         $nogas "GNU assembler not found, install gas-preprocessor"
3950 .macro m n
3951 \n: .int 0
3952 .endm
3953 m x
3954 EOF
3955 fi
3956
3957 check_ldflags -Wl,--as-needed
3958
3959 if check_func dlopen; then
3960     ldl=
3961 elif check_func dlopen -ldl; then
3962     ldl=-ldl
3963 fi
3964
3965 if ! disabled network; then
3966     check_type "sys/types.h sys/socket.h" socklen_t
3967     check_type netdb.h "struct addrinfo"
3968     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3969     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3970     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3971     check_type netinet/in.h "struct sockaddr_in6"
3972     check_type poll.h "struct pollfd"
3973     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3974     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3975     check_type netinet/sctp.h "struct sctp_event_subscribe"
3976     check_func getaddrinfo $network_extralibs
3977     check_func getservbyport $network_extralibs
3978     # Prefer arpa/inet.h over winsock2
3979     if check_header arpa/inet.h ; then
3980         check_func closesocket
3981     elif check_header winsock2.h ; then
3982         check_func_headers winsock2.h closesocket -lws2 &&
3983             network_extralibs="-lws2" ||
3984         { check_func_headers winsock2.h closesocket -lws2_32 &&
3985             network_extralibs="-lws2_32"; }
3986         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3987         check_type ws2tcpip.h socklen_t
3988         check_type ws2tcpip.h "struct addrinfo"
3989         check_type ws2tcpip.h "struct group_source_req"
3990         check_type ws2tcpip.h "struct ip_mreq_source"
3991         check_type ws2tcpip.h "struct ipv6_mreq"
3992         check_type winsock2.h "struct pollfd"
3993         check_type ws2tcpip.h "struct sockaddr_in6"
3994         check_type ws2tcpip.h "struct sockaddr_storage"
3995         check_struct winsock2.h "struct sockaddr" sa_len
3996     else
3997         disable network
3998     fi
3999 fi
4000
4001 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4002 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4003
4004 check_func  access
4005 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4006 check_func  fcntl
4007 check_func  fork
4008 check_func_headers stdlib.h getenv
4009 check_func  gethrtime
4010 check_func  getopt
4011 check_func  getrusage
4012 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4013 check_func  gettimeofday
4014 check_func  inet_aton $network_extralibs
4015 check_func  isatty
4016 check_func  localtime_r
4017 check_func  ${malloc_prefix}memalign            && enable memalign
4018 check_func  mkstemp
4019 check_func  mmap
4020 check_func  mprotect
4021 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4022 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4023 check_func  setrlimit
4024 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4025 check_func  strerror_r
4026 check_func  sched_getaffinity
4027 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4028 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4029 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4030 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4031 check_builtin sarestart signal.h "SA_RESTART"
4032 check_func  sysconf
4033 check_func  sysctl
4034 check_func  usleep
4035 check_func_headers conio.h kbhit