lavu/eval: rename "new_eval_expr()" to "make_eval_expr()"
[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
106 Program options:
107   --disable-programs       do not build command line programs
108   --disable-ffmpeg         disable ffmpeg build
109   --disable-ffplay         disable ffplay build
110   --disable-ffprobe        disable ffprobe build
111   --disable-ffserver       disable ffserver build
112
113 Documentation options:
114   --disable-doc            do not build documentation
115   --disable-htmlpages      do not build HTML documentation pages
116   --disable-manpages       do not build man documentation pages
117   --disable-podpages       do not build POD documentation pages
118   --disable-txtpages       do not build text documentation pages
119
120 Component options:
121   --disable-avdevice       disable libavdevice build
122   --disable-avcodec        disable libavcodec build
123   --disable-avformat       disable libavformat build
124   --disable-avutil         disable libavutil build
125   --disable-swresample     disable libswresample build
126   --disable-swscale        disable libswscale build
127   --disable-postproc       disable libpostproc build
128   --disable-avfilter       disable libavfilter build
129   --enable-avresample      enable libavresample build [no]
130   --disable-pthreads       disable pthreads [auto]
131   --disable-w32threads     disable Win32 threads [auto]
132   --disable-os2threads     disable OS/2 threads [auto]
133   --disable-network        disable network support [no]
134   --disable-dct            disable DCT code
135   --disable-dwt            disable DWT code
136   --disable-error-resilience disable error resilience code
137   --disable-lsp            disable LSP code
138   --disable-lzo            disable LZO decoder code
139   --disable-mdct           disable MDCT code
140   --disable-rdft           disable RDFT code
141   --disable-fft            disable FFT code
142
143 Hardware accelerators:
144   --enable-dxva2           enable DXVA2 code
145   --enable-vaapi           enable VAAPI code
146   --enable-vda             enable VDA code
147   --enable-vdpau           enable VDPAU code
148
149 Individual component options:
150   --disable-everything     disable all components listed below
151   --disable-encoder=NAME   disable encoder NAME
152   --enable-encoder=NAME    enable encoder NAME
153   --disable-encoders       disable all encoders
154   --disable-decoder=NAME   disable decoder NAME
155   --enable-decoder=NAME    enable decoder NAME
156   --disable-decoders       disable all decoders
157   --disable-hwaccel=NAME   disable hwaccel NAME
158   --enable-hwaccel=NAME    enable hwaccel NAME
159   --disable-hwaccels       disable all hwaccels
160   --disable-muxer=NAME     disable muxer NAME
161   --enable-muxer=NAME      enable muxer NAME
162   --disable-muxers         disable all muxers
163   --disable-demuxer=NAME   disable demuxer NAME
164   --enable-demuxer=NAME    enable demuxer NAME
165   --disable-demuxers       disable all demuxers
166   --enable-parser=NAME     enable parser NAME
167   --disable-parser=NAME    disable parser NAME
168   --disable-parsers        disable all parsers
169   --enable-bsf=NAME        enable bitstream filter NAME
170   --disable-bsf=NAME       disable bitstream filter NAME
171   --disable-bsfs           disable all bitstream filters
172   --enable-protocol=NAME   enable protocol NAME
173   --disable-protocol=NAME  disable protocol NAME
174   --disable-protocols      disable all protocols
175   --enable-indev=NAME      enable input device NAME
176   --disable-indev=NAME     disable input device NAME
177   --disable-indevs         disable input devices
178   --enable-outdev=NAME     enable output device NAME
179   --disable-outdev=NAME    disable output device NAME
180   --disable-outdevs        disable output devices
181   --disable-devices        disable all devices
182   --enable-filter=NAME     enable filter NAME
183   --disable-filter=NAME    disable filter NAME
184   --disable-filters        disable all filters
185
186 External library support:
187   --enable-avisynth        enable reading of AVISynth script files [no]
188   --enable-bzlib           enable bzlib [autodetect]
189   --enable-fontconfig      enable fontconfig
190   --enable-frei0r          enable frei0r video filtering
191   --enable-gnutls          enable gnutls [no]
192   --enable-iconv           enable iconv [autodetect]
193   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
194   --enable-libass          enable libass subtitles rendering [no]
195   --enable-libbluray       enable BluRay reading using libbluray [no]
196   --enable-libcaca         enable textual display using libcaca
197   --enable-libcelt         enable CELT decoding via libcelt [no]
198   --enable-libcdio         enable audio CD grabbing with libcdio
199   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
200                            and libraw1394 [no]
201   --enable-libfaac         enable AAC encoding via libfaac [no]
202   --enable-libfdk-aac      enable AAC encoding via libfdk-aac [no]
203   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
204   --enable-libfreetype     enable libfreetype [no]
205   --enable-libgsm          enable GSM de/encoding via libgsm [no]
206   --enable-libiec61883     enable iec61883 via libiec61883 [no]
207   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
208   --enable-libmodplug      enable ModPlug via libmodplug [no]
209   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
210   --enable-libnut          enable NUT (de)muxing via libnut,
211                            native (de)muxer exists [no]
212   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
213   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
214   --enable-libopencv       enable video filtering via libopencv [no]
215   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
216   --enable-libopus         enable Opus decoding via libopus [no]
217   --enable-libpulse        enable Pulseaudio input via libpulse [no]
218   --enable-libquvi         enable quvi input via libquvi [no]
219   --enable-librtmp         enable RTMP[E] support via librtmp [no]
220   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
221   --enable-libsoxr         enable Include libsoxr resampling [no]
222   --enable-libspeex        enable Speex de/encoding via libspeex [no]
223   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
224   --enable-libtheora       enable Theora encoding via libtheora [no]
225   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
226   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
227   --enable-libv4l2         enable libv4l2/v4l-utils [no]
228   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
229   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
230   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
231                            native implementation exists [no]
232   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
233   --enable-libx264         enable H.264 encoding via x264 [no]
234   --enable-libxavs         enable AVS encoding via xavs [no]
235   --enable-libxvid         enable Xvid encoding via xvidcore,
236                            native MPEG-4/Xvid encoder exists [no]
237   --enable-openal          enable OpenAL 1.1 capture support [no]
238   --enable-opencl          enable OpenCL code
239   --enable-openssl         enable openssl [no]
240   --enable-x11grab         enable X11 grabbing [no]
241   --enable-zlib            enable zlib [autodetect]
242
243 Advanced options (experts only):
244   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
245   --enable-cross-compile   assume a cross-compiler is used
246   --sysroot=PATH           root of cross-build tree
247   --sysinclude=PATH        location of cross-build system headers
248   --target-os=OS           compiler targets OS [$target_os]
249   --target-exec=CMD        command to run executables on target
250   --target-path=DIR        path to view of build directory on target
251   --toolchain=NAME         set tool defaults according to NAME
252   --nm=NM                  use nm tool NM [$nm_default]
253   --ar=AR                  use archive tool AR [$ar_default]
254   --as=AS                  use assembler AS [$as_default]
255   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
256   --cc=CC                  use C compiler CC [$cc_default]
257   --cxx=CXX                use C compiler CXX [$cxx_default]
258   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
259   --ld=LD                  use linker LD [$ld_default]
260   --host-cc=HOSTCC         use host C compiler HOSTCC
261   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
262   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
263   --host-ld=HOSTLD         use host linker HOSTLD
264   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
265   --host-libs=HLIBS        use libs HLIBS when linking for host
266   --host-os=OS             compiler host OS [$target_os]
267   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
268   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
269   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
270   --extra-libs=ELIBS       add ELIBS [$ELIBS]
271   --extra-version=STRING   version string suffix []
272   --optflags=OPTFLAGS      override optimization-related compiler flags
273   --build-suffix=SUFFIX    library name suffix []
274   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
275   --progs-suffix=SUFFIX    program name suffix []
276   --arch=ARCH              select architecture [$arch]
277   --cpu=CPU                select the minimum required CPU (affects
278                            instruction selection, may crash on older CPUs)
279   --enable-pic             build position-independent code
280   --enable-sram            allow use of on-chip SRAM
281   --enable-thumb           compile for Thumb instruction set
282   --disable-symver         disable symbol versioning
283   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
284   --disable-safe-bitstream-reader
285                            disable buffer boundary checking in bitreaders
286                            (faster, but may crash)
287   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
288   --enable-lto             use link-time optimization
289
290 Optimization options (experts only):
291   --disable-asm            disable all assembler optimizations
292   --disable-altivec        disable AltiVec optimizations
293   --disable-amd3dnow       disable 3DNow! optimizations
294   --disable-amd3dnowext    disable 3DNow! extended optimizations
295   --disable-mmx            disable MMX optimizations
296   --disable-mmxext         disable MMXEXT optimizations
297   --disable-sse            disable SSE optimizations
298   --disable-sse2           disable SSE2 optimizations
299   --disable-sse3           disable SSE3 optimizations
300   --disable-ssse3          disable SSSE3 optimizations
301   --disable-sse4           disable SSE4 optimizations
302   --disable-sse42          disable SSE4.2 optimizations
303   --disable-avx            disable AVX optimizations
304   --disable-fma4           disable FMA4 optimizations
305   --disable-armv5te        disable armv5te optimizations
306   --disable-armv6          disable armv6 optimizations
307   --disable-armv6t2        disable armv6t2 optimizations
308   --disable-vfp            disable VFP optimizations
309   --disable-neon           disable NEON optimizations
310   --disable-vis            disable VIS optimizations
311   --disable-inline-asm     disable use of inline assembler
312   --disable-yasm           disable use of yasm assembler
313   --disable-mips32r2       disable MIPS32R2 optimizations
314   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
315   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
316   --disable-mipsfpu        disable floating point MIPS optimizations
317   --disable-fast-unaligned consider unaligned accesses slow
318
319 Developer options (useful when working on FFmpeg itself):
320   --disable-debug          disable debugging symbols
321   --enable-debug=LEVEL     set the debug level [$debuglevel]
322   --disable-optimizations  disable compiler optimizations
323   --enable-extra-warnings  enable more compiler warnings
324   --disable-stripping      disable stripping of executables and shared libraries
325   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
326                            2 causes a slowdown at runtime.
327   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
328   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
329                            leaks and errors, using the specified valgrind binary.
330                            Cannot be combined with --target-exec
331   --enable-ftrapv          Trap arithmetic overflows
332   --samples=PATH           location of test samples for FATE, if not set use
333                            \$FATE_SAMPLES at make invocation time.
334   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
335                            should be used only for debugging purposes)
336   --enable-random          randomly enable/disable components
337   --disable-random
338   --enable-random=LIST     randomly enable/disable specific components or
339   --disable-random=LIST    component groups. LIST is a comma-separated list
340                            of NAME[:PROB] entries where NAME is a component
341                            (group) and PROB the probability associated with
342                            NAME (default 0.5).
343   --random-seed=VALUE      seed value for --enable/disable-random
344
345 NOTE: Object files are built at the place where configure is launched.
346 EOF
347   exit 0
348 }
349
350 quotes='""'
351
352 log(){
353     echo "$@" >> $logfile
354 }
355
356 log_file(){
357     log BEGIN $1
358     pr -n -t $1 >> $logfile
359     log END $1
360 }
361
362 echolog(){
363     log "$@"
364     echo "$@"
365 }
366
367 warn(){
368     log "WARNING: $*"
369     WARNINGS="${WARNINGS}WARNING: $*\n"
370 }
371
372 die(){
373     echolog "$@"
374     cat <<EOF
375
376 If you think configure made a mistake, make sure you are using the latest
377 version from Git.  If the latest version fails, report the problem to the
378 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
379 EOF
380     if disabled logging; then
381         cat <<EOF
382 Rerun configure with logging enabled (do not use --disable-logging), and
383 include the log this produces with your report.
384 EOF
385     else
386         cat <<EOF
387 Include the log file "$logfile" produced by configure as this will help
388 solving the problem.
389 EOF
390     fi
391     exit 1
392 }
393
394 # Avoid locale weirdness, besides we really just want to translate ASCII.
395 toupper(){
396     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
397 }
398
399 tolower(){
400     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
401 }
402
403 c_escape(){
404     echo "$*" | sed 's/["\\]/\\\0/g'
405 }
406
407 sh_quote(){
408     v=$(echo "$1" | sed "s/'/'\\\\''/g")
409     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
410     echo "$v"
411 }
412
413 cleanws(){
414     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
415 }
416
417 filter(){
418     pat=$1
419     shift
420     for v; do
421         eval "case $v in $pat) echo $v ;; esac"
422     done
423 }
424
425 filter_out(){
426     pat=$1
427     shift
428     for v; do
429         eval "case $v in $pat) ;; *) echo $v ;; esac"
430     done
431 }
432
433 map(){
434     m=$1
435     shift
436     for v; do eval $m; done
437 }
438
439 add_suffix(){
440     suffix=$1
441     shift
442     for v; do echo ${v}${suffix}; done
443 }
444
445 set_all(){
446     value=$1
447     shift
448     for var in $*; do
449         eval $var=$value
450     done
451 }
452
453 set_weak(){
454     value=$1
455     shift
456     for var; do
457         eval : \${$var:=$value}
458     done
459 }
460
461 sanitize_var_name(){
462     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
463 }
464
465 set_safe(){
466     var=$1
467     shift
468     eval $(sanitize_var_name "$var")='$*'
469 }
470
471 get_safe(){
472     eval echo \$$(sanitize_var_name "$1")
473 }
474
475 pushvar(){
476     for var in $*; do
477         eval level=\${${var}_level:=0}
478         eval ${var}_${level}="\$$var"
479         eval ${var}_level=$(($level+1))
480     done
481 }
482
483 popvar(){
484     for var in $*; do
485         eval level=\${${var}_level:-0}
486         test $level = 0 && continue
487         eval level=$(($level-1))
488         eval $var="\${${var}_${level}}"
489         eval ${var}_level=$level
490         eval unset ${var}_${level}
491     done
492 }
493
494 enable(){
495     set_all yes $*
496 }
497
498 disable(){
499     set_all no $*
500 }
501
502 enable_weak(){
503     set_weak yes $*
504 }
505
506 disable_weak(){
507     set_weak no $*
508 }
509
510 enable_safe(){
511     for var; do
512         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
513     done
514 }
515
516 disable_safe(){
517     for var; do
518         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
519     done
520 }
521
522 do_enable_deep(){
523     for var; do
524         enabled $var && continue
525         eval sel="\$${var}_select"
526         eval sgs="\$${var}_suggest"
527         pushvar var sgs
528         enable_deep $sel
529         popvar sgs
530         enable_deep_weak $sgs
531         popvar var
532     done
533 }
534
535 enable_deep(){
536     do_enable_deep $*
537     enable $*
538 }
539
540 enable_deep_weak(){
541     do_enable_deep $*
542     enable_weak $*
543 }
544
545 enabled(){
546     test "${1#!}" = "$1" && op== || op=!=
547     eval test "x\$${1#!}" $op "xyes"
548 }
549
550 disabled(){
551     test "${1#!}" = "$1" && op== || op=!=
552     eval test "x\$${1#!}" $op "xno"
553 }
554
555 enabled_all(){
556     for opt; do
557         enabled $opt || return 1
558     done
559 }
560
561 disabled_all(){
562     for opt; do
563         disabled $opt || return 1
564     done
565 }
566
567 enabled_any(){
568     for opt; do
569         enabled $opt && return 0
570     done
571 }
572
573 disabled_any(){
574     for opt; do
575         disabled $opt && return 0
576     done
577     return 1
578 }
579
580 set_default(){
581     for opt; do
582         eval : \${$opt:=\$${opt}_default}
583     done
584 }
585
586 is_in(){
587     value=$1
588     shift
589     for var in $*; do
590         [ $var = $value ] && return 0
591     done
592     return 1
593 }
594
595 do_check_deps(){
596     for cfg; do
597         cfg="${cfg#!}"
598         enabled ${cfg}_checking && die "Circular dependency for $cfg."
599         disabled ${cfg}_checking && continue
600         enable ${cfg}_checking
601         append allopts $cfg
602
603         eval dep_all="\$${cfg}_deps"
604         eval dep_any="\$${cfg}_deps_any"
605         eval dep_sel="\$${cfg}_select"
606         eval dep_sgs="\$${cfg}_suggest"
607         eval dep_ifa="\$${cfg}_if"
608         eval dep_ifn="\$${cfg}_if_any"
609
610         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
611         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
612         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
613
614         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
615         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
616         enabled_all  $dep_all || disable $cfg
617         enabled_any  $dep_any || disable $cfg
618         disabled_any $dep_sel && disable $cfg
619
620         if enabled $cfg; then
621             enable_deep $dep_sel
622             enable_deep_weak $dep_sgs
623         fi
624
625         disable ${cfg}_checking
626     done
627 }
628
629 check_deps(){
630     unset allopts
631
632     do_check_deps "$@"
633
634     for cfg in $allopts; do
635         enabled $cfg || continue
636         eval dep_extralibs="\$${cfg}_extralibs"
637         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
638     done
639 }
640
641 print_config(){
642     pfx=$1
643     files=$2
644     shift 2
645     map 'eval echo "$v \${$v:-no}"' "$@" |
646     awk "BEGIN { split(\"$files\", files) }
647         {
648             c = \"$pfx\" toupper(\$1);
649             v = \$2;
650             sub(/yes/, 1, v);
651             sub(/no/,  0, v);
652             for (f in files) {
653                 file = files[f];
654                 if (file ~ /\\.h\$/) {
655                     printf(\"#define %s %d\\n\", c, v) >>file;
656                 } else if (file ~ /\\.asm\$/) {
657                     printf(\"%%define %s %d\\n\", c, v) >>file;
658                 } else if (file ~ /\\.mak\$/) {
659                     n = -v ? \"\" : \"!\";
660                     printf(\"%s%s=yes\\n\", n, c) >>file;
661                 } else if (file ~ /\\.texi\$/) {
662                     pre = -v ? \"\" : \"@c \";
663                     yesno = \$2;
664                     c2 = tolower(c);
665                     gsub(/_/, \"-\", c2);
666                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
667                 }
668             }
669         }"
670 }
671
672 print_enabled(){
673     suf=$1
674     shift
675     for v; do
676         enabled $v && printf "%s\n" ${v%$suf};
677     done
678 }
679
680 append(){
681     var=$1
682     shift
683     eval "$var=\"\$$var $*\""
684 }
685
686 prepend(){
687     var=$1
688     shift
689     eval "$var=\"$* \$$var\""
690 }
691
692 add_cppflags(){
693     append CPPFLAGS "$@"
694 }
695
696 add_cflags(){
697     append CFLAGS $($cflags_filter "$@")
698 }
699
700 add_cxxflags(){
701     append CXXFLAGS $($cflags_filter "$@")
702 }
703
704 add_asflags(){
705     append ASFLAGS $($asflags_filter "$@")
706 }
707
708 add_ldflags(){
709     append LDFLAGS $($ldflags_filter "$@")
710 }
711
712 add_extralibs(){
713     prepend extralibs $($ldflags_filter "$@")
714 }
715
716 add_host_cppflags(){
717     append host_cppflags "$@"
718 }
719
720 add_host_cflags(){
721     append host_cflags $($host_cflags_filter "$@")
722 }
723
724 add_host_ldflags(){
725     append host_ldflags $($host_ldflags_filter "$@")
726 }
727
728 add_compat(){
729     append compat_objs $1
730     shift
731     map 'add_cppflags -D$v' "$@"
732 }
733
734 check_cmd(){
735     log "$@"
736     "$@" >> $logfile 2>&1
737 }
738
739 cc_o(){
740     eval printf '%s\\n' $CC_O
741 }
742
743 cc_e(){
744     eval printf '%s\\n' $CC_E
745 }
746
747 check_cc(){
748     log check_cc "$@"
749     cat > $TMPC
750     log_file $TMPC
751     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
752 }
753
754 check_cxx(){
755     log check_cxx "$@"
756     cat > $TMPCPP
757     log_file $TMPCPP
758     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
759 }
760
761 check_cpp(){
762     log check_cpp "$@"
763     cat > $TMPC
764     log_file $TMPC
765     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
766 }
767
768 as_o(){
769     eval printf '%s\\n' $AS_O
770 }
771
772 check_as(){
773     log check_as "$@"
774     cat > $TMPS
775     log_file $TMPS
776     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
777 }
778
779 check_inline_asm(){
780     log check_inline_asm "$@"
781     name="$1"
782     code="$2"
783     shift 2
784     disable $name
785     check_cc "$@" <<EOF && enable $name
786 void foo(void){ __asm__ volatile($code); }
787 EOF
788 }
789
790 check_insn(){
791     log check_insn "$@"
792     check_inline_asm ${1}_inline "\"$2\""
793     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
794 }
795
796 check_yasm(){
797     log check_yasm "$@"
798     echo "$1" > $TMPS
799     log_file $TMPS
800     shift 1
801     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
802 }
803
804 ld_o(){
805     eval printf '%s\\n' $LD_O
806 }
807
808 check_ld(){
809     log check_ld "$@"
810     type=$1
811     shift 1
812     flags=$(filter_out '-l*|*.so' $@)
813     libs=$(filter '-l*|*.so' $@)
814     check_$type $($cflags_filter $flags) || return
815     flags=$($ldflags_filter $flags)
816     libs=$($ldflags_filter $libs)
817     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
818 }
819
820 check_code(){
821     log check_code "$@"
822     check=$1
823     headers=$2
824     code=$3
825     shift 3
826     {
827         for hdr in $headers; do
828             echo "#include <$hdr>"
829         done
830         echo "int main(void) { $code; return 0; }"
831     } | check_$check "$@"
832 }
833
834 check_cppflags(){
835     log check_cppflags "$@"
836     check_cc "$@" <<EOF && append CPPFLAGS "$@"
837 int x;
838 EOF
839 }
840
841 check_cflags(){
842     log check_cflags "$@"
843     set -- $($cflags_filter "$@")
844     check_cc "$@" <<EOF && append CFLAGS "$@"
845 int x;
846 EOF
847 }
848
849 check_cxxflags(){
850     log check_cxxflags "$@"
851     set -- $($cflags_filter "$@")
852     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
853 int x;
854 EOF
855 }
856
857 test_ldflags(){
858     log test_ldflags "$@"
859     check_ld "cc" "$@" <<EOF
860 int main(void){ return 0; }
861 EOF
862 }
863
864 check_ldflags(){
865     log check_ldflags "$@"
866     test_ldflags "$@" && add_ldflags "$@"
867 }
868
869 check_header(){
870     log check_header "$@"
871     header=$1
872     shift
873     disable_safe $header
874     check_cpp "$@" <<EOF && enable_safe $header
875 #include <$header>
876 int x;
877 EOF
878 }
879
880 check_func(){
881     log check_func "$@"
882     func=$1
883     shift
884     disable $func
885     check_ld "cc" "$@" <<EOF && enable $func
886 extern int $func();
887 int main(void){ $func(); }
888 EOF
889 }
890
891 check_mathfunc(){
892     log check_mathfunc "$@"
893     func=$1
894     narg=$2
895     shift 2
896     test $narg = 2 && args="f, g" || args="f"
897     disable $func
898     check_ld "cc" "$@" <<EOF && enable $func
899 #include <math.h>
900 float foo(float f, float g) { return $func($args); }
901 int main(void){ return (int) foo; }
902 EOF
903 }
904
905 check_func_headers(){
906     log check_func_headers "$@"
907     headers=$1
908     funcs=$2
909     shift 2
910     {
911         for hdr in $headers; do
912             echo "#include <$hdr>"
913         done
914         for func in $funcs; do
915             echo "long check_$func(void) { return (long) $func; }"
916         done
917         echo "int main(void) { return 0; }"
918     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
919 }
920
921 check_class_headers_cpp(){
922     log check_class_headers_cpp "$@"
923     headers=$1
924     classes=$2
925     shift 2
926     {
927         for hdr in $headers; do
928             echo "#include <$hdr>"
929         done
930         echo "int main(void) { "
931         i=1
932         for class in $classes; do
933             echo "$class obj$i;"
934             i=$(expr $i + 1)
935         done
936         echo "return 0; }"
937     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
938 }
939
940 check_cpp_condition(){
941     log check_cpp_condition "$@"
942     header=$1
943     condition=$2
944     shift 2
945     check_cpp "$@" <<EOF
946 #include <$header>
947 #if !($condition)
948 #error "unsatisfied condition: $condition"
949 #endif
950 EOF
951 }
952
953 check_lib(){
954     log check_lib "$@"
955     header="$1"
956     func="$2"
957     shift 2
958     check_header $header && check_func $func "$@" && add_extralibs "$@"
959 }
960
961 check_lib2(){
962     log check_lib2 "$@"
963     headers="$1"
964     funcs="$2"
965     shift 2
966     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
967 }
968
969 check_lib_cpp(){
970     log check_lib_cpp "$@"
971     headers="$1"
972     classes="$2"
973     shift 2
974     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
975 }
976
977 check_pkg_config(){
978     log check_pkg_config "$@"
979     pkg="$1"
980     headers="$2"
981     funcs="$3"
982     shift 3
983     $pkg_config --exists $pkg 2>/dev/null || return
984     pkg_cflags=$($pkg_config --cflags $pkg)
985     pkg_libs=$($pkg_config --libs $pkg)
986     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
987         set_safe ${pkg}_cflags $pkg_cflags   &&
988         set_safe ${pkg}_libs   $pkg_libs
989 }
990
991 check_exec(){
992     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
993 }
994
995 check_exec_crash(){
996     code=$(cat)
997
998     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
999     # are safe but may not be available everywhere.  Thus we use
1000     # raise(SIGTERM) instead.  The check is run in a subshell so we
1001     # can redirect the "Terminated" message from the shell.  SIGBUS
1002     # is not defined by standard C so it is used conditionally.
1003
1004     (check_exec "$@") >> $logfile 2>&1 <<EOF
1005 #include <signal.h>
1006 static void sighandler(int sig){
1007     raise(SIGTERM);
1008 }
1009 int func(void){
1010     $code
1011 }
1012 int (*func_ptr)(void) = func;
1013 int main(void){
1014     signal(SIGILL, sighandler);
1015     signal(SIGFPE, sighandler);
1016     signal(SIGSEGV, sighandler);
1017 #ifdef SIGBUS
1018     signal(SIGBUS, sighandler);
1019 #endif
1020     return func_ptr();
1021 }
1022 EOF
1023 }
1024
1025 check_type(){
1026     log check_type "$@"
1027     headers=$1
1028     type=$2
1029     shift 2
1030     disable_safe "$type"
1031     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1032 }
1033
1034 check_struct(){
1035     log check_struct "$@"
1036     headers=$1
1037     struct=$2
1038     member=$3
1039     shift 3
1040     disable_safe "${struct}_${member}"
1041     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1042         enable_safe "${struct}_${member}"
1043 }
1044
1045 check_builtin(){
1046     log check_builtin "$@"
1047     name=$1
1048     headers=$2
1049     builtin=$3
1050     shift 3
1051     disable "$name"
1052     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1053 }
1054
1055 require(){
1056     name="$1"
1057     header="$2"
1058     func="$3"
1059     shift 3
1060     check_lib $header $func "$@" || die "ERROR: $name not found"
1061 }
1062
1063 require2(){
1064     name="$1"
1065     headers="$2"
1066     func="$3"
1067     shift 3
1068     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1069 }
1070
1071 require_cpp(){
1072     name="$1"
1073     headers="$2"
1074     classes="$3"
1075     shift 3
1076     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1077 }
1078
1079 require_pkg_config(){
1080     pkg="$1"
1081     check_pkg_config "$@" || die "ERROR: $pkg not found"
1082     add_cflags    $(get_safe ${pkg}_cflags)
1083     add_extralibs $(get_safe ${pkg}_libs)
1084 }
1085
1086 hostcc_o(){
1087     eval printf '%s\\n' $HOSTCC_O
1088 }
1089
1090 check_host_cc(){
1091     log check_host_cc "$@"
1092     cat > $TMPC
1093     log_file $TMPC
1094     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1095 }
1096
1097 check_host_cppflags(){
1098     log check_host_cppflags "$@"
1099     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1100 int x;
1101 EOF
1102 }
1103
1104 check_host_cflags(){
1105     log check_host_cflags "$@"
1106     set -- $($host_cflags_filter "$@")
1107     check_host_cc "$@" <<EOF && append host_cflags "$@"
1108 int x;
1109 EOF
1110 }
1111
1112 apply(){
1113     file=$1
1114     shift
1115     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1116 }
1117
1118 cp_if_changed(){
1119     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1120     mkdir -p "$(dirname $2)"
1121     $cp_f "$1" "$2"
1122 }
1123
1124 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1125 # system-dependent things.
1126
1127 COMPONENT_LIST="
1128     bsfs
1129     decoders
1130     demuxers
1131     encoders
1132     filters
1133     hwaccels
1134     indevs
1135     muxers
1136     outdevs
1137     parsers
1138     protocols
1139 "
1140
1141 EXTERNAL_LIBRARY_LIST="
1142     avisynth
1143     bzlib
1144     crystalhd
1145     fontconfig
1146     frei0r
1147     gnutls
1148     iconv
1149     libaacplus
1150     libass
1151     libbluray
1152     libcaca
1153     libcdio
1154     libcelt
1155     libdc1394
1156     libfaac
1157     libfdk_aac
1158     libflite
1159     libfreetype
1160     libgsm
1161     libiec61883
1162     libilbc
1163     libmodplug
1164     libmp3lame
1165     libnut
1166     libopencore_amrnb
1167     libopencore_amrwb
1168     libopencv
1169     libopenjpeg
1170     libopus
1171     libpulse
1172     libquvi
1173     librtmp
1174     libschroedinger
1175     libsoxr
1176     libspeex
1177     libstagefright_h264
1178     libtheora
1179     libtwolame
1180     libutvideo
1181     libv4l2
1182     libvo_aacenc
1183     libvo_amrwbenc
1184     libvorbis
1185     libvpx
1186     libx264
1187     libxavs
1188     libxvid
1189     openal
1190     opencl
1191     openssl
1192     x11grab
1193     zlib
1194 "
1195
1196 DOCUMENT_LIST="
1197     doc
1198     htmlpages
1199     manpages
1200     podpages
1201     txtpages
1202 "
1203
1204 HWACCEL_LIST="
1205     dxva2
1206     vaapi
1207     vda
1208     vdpau
1209 "
1210
1211 LIBRARY_LIST="
1212     avcodec
1213     avdevice
1214     avfilter
1215     avformat
1216     avresample
1217     avutil
1218     postproc
1219     swresample
1220     swscale
1221 "
1222
1223 PROGRAM_LIST="
1224     ffplay
1225     ffprobe
1226     ffserver
1227     ffmpeg
1228 "
1229
1230 CONFIG_LIST="
1231     $COMPONENT_LIST
1232     $DOCUMENT_LIST
1233     $EXTERNAL_LIBRARY_LIST
1234     $HWACCEL_LIST
1235     $LIBRARY_LIST
1236     $PROGRAM_LIST
1237     dct
1238     dwt
1239     error_resilience
1240     fast_unaligned
1241     fft
1242     ftrapv
1243     gpl
1244     gray
1245     hardcoded_tables
1246     incompatible_fork_abi
1247     lsp
1248     lzo
1249     mdct
1250     memalign_hack
1251     memory_poisoning
1252     network
1253     nonfree
1254     pic
1255     rdft
1256     runtime_cpudetect
1257     safe_bitstream_reader
1258     shared
1259     small
1260     sram
1261     static
1262     swscale_alpha
1263     thumb
1264     version3
1265     xmm_clobber_test
1266 "
1267
1268 THREADS_LIST='
1269     pthreads
1270     w32threads
1271     os2threads
1272 '
1273
1274 ATOMICS_LIST='
1275     atomics_gcc
1276     atomics_win32
1277     atomics_suncc
1278 '
1279
1280 ARCH_LIST='
1281     aarch64
1282     alpha
1283     arm
1284     avr32
1285     avr32_ap
1286     avr32_uc
1287     bfin
1288     ia64
1289     m68k
1290     mips
1291     mips64
1292     parisc
1293     ppc
1294     ppc64
1295     s390
1296     sh4
1297     sparc
1298     sparc64
1299     tilegx
1300     tilepro
1301     tomi
1302     x86
1303     x86_32
1304     x86_64
1305 '
1306
1307 ARCH_EXT_LIST_ARM='
1308     armv5te
1309     armv6
1310     armv6t2
1311     neon
1312     vfp
1313     vfpv3
1314 '
1315
1316 ARCH_EXT_LIST_X86='
1317     amd3dnow
1318     amd3dnowext
1319     avx
1320     fma4
1321     mmx
1322     mmxext
1323     sse
1324     sse2
1325     sse3
1326     sse4
1327     sse42
1328     ssse3
1329 '
1330
1331 ARCH_EXT_LIST="
1332     $ARCH_EXT_LIST_ARM
1333     $ARCH_EXT_LIST_X86
1334     altivec
1335     ppc4xx
1336     vis
1337     mipsfpu
1338     mips32r2
1339     mipsdspr1
1340     mipsdspr2
1341 "
1342
1343 HAVE_LIST_CMDLINE='
1344     inline_asm
1345     symver
1346     yasm
1347 '
1348
1349 HAVE_LIST_PUB='
1350     bigendian
1351     fast_unaligned
1352     incompatible_fork_abi
1353 '
1354
1355 MATH_FUNCS="
1356     atanf
1357     atan2f
1358     cbrt
1359     cbrtf
1360     cosf
1361     exp2
1362     exp2f
1363     expf
1364     isinf
1365     isnan
1366     ldexpf
1367     llrint
1368     llrintf
1369     log2
1370     log2f
1371     log10f
1372     lrint
1373     lrintf
1374     powf
1375     rint
1376     round
1377     roundf
1378     sinf
1379     trunc
1380     truncf
1381 "
1382
1383 HAVE_LIST="
1384     $ARCH_EXT_LIST
1385     $(add_suffix _external $ARCH_EXT_LIST)
1386     $(add_suffix _inline   $ARCH_EXT_LIST)
1387     $HAVE_LIST_CMDLINE
1388     $HAVE_LIST_PUB
1389     $THREADS_LIST
1390     $ATOMICS_LIST
1391     $MATH_FUNCS
1392     access
1393     aligned_malloc
1394     aligned_stack
1395     alsa_asoundlib_h
1396     altivec_h
1397     arpa_inet_h
1398     asm_mod_q
1399     asm_mod_y
1400     asm_types_h
1401     atomic_cas_ptr
1402     atomics_native
1403     attribute_may_alias
1404     attribute_packed
1405     cdio_paranoia_h
1406     cdio_paranoia_paranoia_h
1407     clock_gettime
1408     closesocket
1409     cmov
1410     CommandLineToArgvW
1411     cpunop
1412     CryptGenRandom
1413     dcbzl
1414     dev_bktr_ioctl_bt848_h
1415     dev_bktr_ioctl_meteor_h
1416     dev_ic_bt8xx_h
1417     dev_video_bktr_ioctl_bt848_h
1418     dev_video_meteor_ioctl_meteor_h
1419     direct_h
1420     dlfcn_h
1421     dlopen
1422     dos_paths
1423     dxva_h
1424     ebp_available
1425     ebx_available
1426     fast_64bit
1427     fast_clz
1428     fast_cmov
1429     fcntl
1430     fork
1431     getaddrinfo
1432     gethrtime
1433     getopt
1434     GetProcessAffinityMask
1435     GetProcessMemoryInfo
1436     GetProcessTimes
1437     GetSystemTimeAsFileTime
1438     getrusage
1439     getservbyport
1440     gettimeofday
1441     glob
1442     gnu_as
1443     gsm_h
1444     ibm_asm
1445     inet_aton
1446     io_h
1447     isatty
1448     jack_port_get_latency_range
1449     kbhit
1450     ldbrx
1451     libdc1394_1
1452     libdc1394_2
1453     local_aligned_16
1454     local_aligned_8
1455     localtime_r
1456     loongson
1457     lzo1x_999_compress
1458     machine_ioctl_bt848_h
1459     machine_ioctl_meteor_h
1460     machine_rw_barrier
1461     makeinfo
1462     malloc_h
1463     MapViewOfFile
1464     memalign
1465     MemoryBarrier
1466     mkstemp
1467     mm_empty
1468     mmap
1469     mprotect
1470     msvcrt
1471     nanosleep
1472     openjpeg_1_5_openjpeg_h
1473     PeekNamedPipe
1474     perl
1475     pod2man
1476     poll_h
1477     posix_memalign
1478     pthread_cancel
1479     rdtsc
1480     rsync_contimeout
1481     sched_getaffinity
1482     sdl
1483     SetConsoleTextAttribute
1484     setmode
1485     setrlimit
1486     Sleep
1487     sndio_h
1488     socklen_t
1489     soundcard_h
1490     strerror_r
1491     struct_addrinfo
1492     struct_group_source_req
1493     struct_ip_mreq_source
1494     struct_ipv6_mreq
1495     struct_pollfd
1496     struct_rusage_ru_maxrss
1497     struct_sctp_event_subscribe
1498     struct_sockaddr_in6
1499     struct_sockaddr_sa_len
1500     struct_sockaddr_storage
1501     struct_v4l2_frmivalenum_discrete
1502     symver_asm_label
1503     symver_gnu_asm
1504     sync_val_compare_and_swap
1505     sysconf
1506     sysctl
1507     sys_mman_h
1508     sys_param_h
1509     sys_resource_h
1510     sys_select_h
1511     sys_soundcard_h
1512     sys_time_h
1513     sys_videoio_h
1514     termios_h
1515     texi2html
1516     threads
1517     unistd_h
1518     usleep
1519     vfp_args
1520     VirtualAlloc
1521     windows_h
1522     winsock2_h
1523     xform_asm
1524     xmm_clobbers
1525 "
1526
1527 # options emitted with CONFIG_ prefix but not available on the command line
1528 CONFIG_EXTRA="
1529     aandcttables
1530     ac3dsp
1531     audio_frame_queue
1532     dsputil
1533     frame_thread_encoder
1534     gcrypt
1535     golomb
1536     gplv3
1537     h264chroma
1538     h264dsp
1539     h264pred
1540     h264qpel
1541     hpeldsp
1542     huffman
1543     lgplv3
1544     lpc
1545     mpegaudio
1546     mpegaudiodsp
1547     mpegvideo
1548     mpegvideoenc
1549     nettle
1550     rangecoder
1551     rtpdec
1552     rtpenc_chain
1553     sinewin
1554     videodsp
1555     vp3dsp
1556 "
1557
1558 CMDLINE_SELECT="
1559     $ARCH_EXT_LIST
1560     $CONFIG_LIST
1561     $HAVE_LIST_CMDLINE
1562     $THREADS_LIST
1563     asm
1564     cross_compile
1565     debug
1566     extra_warnings
1567     logging
1568     lto
1569     optimizations
1570     stripping
1571 "
1572
1573 PATHS_LIST='
1574     bindir
1575     datadir
1576     incdir
1577     libdir
1578     mandir
1579     prefix
1580     shlibdir
1581 '
1582
1583 CMDLINE_SET="
1584     $PATHS_LIST
1585     ar
1586     arch
1587     as
1588     assert_level
1589     build_suffix
1590     cc
1591     cpu
1592     cross_prefix
1593     cxx
1594     dep_cc
1595     extra_version
1596     host_cc
1597     host_cflags
1598     host_ld
1599     host_ldflags
1600     host_libs
1601     host_os
1602     install
1603     ld
1604     logfile
1605     malloc_prefix
1606     nm
1607     optflags
1608     pkg_config
1609     progs_suffix
1610     random_seed
1611     samples
1612     strip
1613     sysinclude
1614     sysroot
1615     target_exec
1616     target_os
1617     target_path
1618     toolchain
1619     valgrind
1620     yasmexe
1621 "
1622
1623 CMDLINE_APPEND="
1624     extra_cflags
1625     extra_cxxflags
1626     host_cppflags
1627 "
1628
1629 # code dependency declarations
1630
1631 # architecture extensions
1632
1633 armv5te_deps="arm"
1634 armv6_deps="arm"
1635 armv6t2_deps="arm"
1636 neon_deps="arm"
1637 vfp_deps="arm"
1638 vfpv3_deps="vfp"
1639
1640 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1641
1642 mipsfpu_deps="mips"
1643 mips32r2_deps="mips"
1644 mipsdspr1_deps="mips"
1645 mipsdspr2_deps="mips"
1646
1647 altivec_deps="ppc"
1648 ppc4xx_deps="ppc"
1649
1650 vis_deps="sparc"
1651
1652 x86_64_suggest="cmov fast_cmov"
1653
1654 amd3dnow_deps="mmx"
1655 amd3dnowext_deps="amd3dnow"
1656 mmx_deps="x86"
1657 mmxext_deps="mmx"
1658 sse_deps="mmxext"
1659 sse2_deps="sse"
1660 sse3_deps="sse2"
1661 ssse3_deps="sse3"
1662 sse4_deps="ssse3"
1663 sse42_deps="sse4"
1664 avx_deps="sse42"
1665 fma4_deps="avx"
1666
1667 mmx_external_deps="yasm"
1668 mmx_inline_deps="inline_asm"
1669 mmx_suggest="mmx_external mmx_inline"
1670
1671 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1672     eval dep=\$${ext}_deps
1673     eval ${ext}_external_deps='"${dep}_external"'
1674     eval ${ext}_inline_deps='"${dep}_inline"'
1675     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1676 done
1677
1678 aligned_stack_if_any="ppc x86"
1679 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1680 fast_clz_if_any="alpha avr32 mips ppc x86"
1681 fast_unaligned_if_any="ppc x86"
1682
1683 inline_asm_deps="!tms470"
1684 need_memalign="altivec neon sse"
1685
1686 symver_if_any="symver_asm_label symver_gnu_asm"
1687
1688 log2_deps="!msvcrt"
1689
1690 # subsystems
1691 dct_select="rdft"
1692 error_resilience_select="dsputil"
1693 frame_thread_encoder_deps="encoders threads"
1694 mdct_select="fft"
1695 rdft_select="fft"
1696 mpegaudio_select="mpegaudiodsp"
1697 mpegaudiodsp_select="dct"
1698 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1699 mpegvideoenc_select="mpegvideo"
1700
1701 # decoders / encoders
1702 aac_decoder_select="mdct sinewin"
1703 aac_encoder_select="audio_frame_queue mdct sinewin"
1704 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1705 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1706 ac3_encoder_select="mdct ac3dsp dsputil"
1707 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1708 alac_encoder_select="lpc"
1709 als_decoder_select="dsputil"
1710 amrnb_decoder_select="lsp"
1711 amrwb_decoder_select="lsp"
1712 amv_encoder_select="aandcttables"
1713 ape_decoder_select="dsputil"
1714 asv_decoder_select="dsputil"
1715 atrac1_decoder_select="mdct sinewin"
1716 atrac3_decoder_select="mdct"
1717 bink_decoder_select="dsputil hpeldsp"
1718 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1719 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1720 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1721 cllc_decoder_select="dsputil"
1722 comfortnoise_encoder_select="lpc"
1723 cook_decoder_select="dsputil mdct sinewin"
1724 cscd_decoder_select="lzo"
1725 cscd_decoder_suggest="zlib"
1726 dca_decoder_select="mdct"
1727 dirac_decoder_select="dsputil dwt golomb videodsp"
1728 dnxhd_decoder_select="dsputil"
1729 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1730 dvvideo_decoder_select="dsputil"
1731 dxa_decoder_select="zlib"
1732 eac3_decoder_select="ac3_decoder"
1733 eac3_encoder_select="ac3_encoder"
1734 eamad_decoder_select="aandcttables dsputil mpegvideo"
1735 eatgq_decoder_select="aandcttables"
1736 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1737 exr_decoder_select="zlib"
1738 ffv1_decoder_select="dsputil golomb rangecoder"
1739 ffv1_encoder_select="rangecoder"
1740 ffvhuff_encoder_select="huffman"
1741 flac_decoder_select="golomb"
1742 flac_encoder_select="dsputil golomb lpc"
1743 flashsv_decoder_select="zlib"
1744 flashsv_encoder_select="zlib"
1745 flashsv2_encoder_select="zlib"
1746 flashsv2_decoder_select="zlib"
1747 flv_decoder_select="h263_decoder"
1748 flv_encoder_select="h263_encoder"
1749 fourxm_decoder_select="dsputil"
1750 fraps_decoder_select="dsputil huffman"
1751 g729_decoder_select="dsputil"
1752 h261_decoder_select="error_resilience mpegvideo"
1753 h261_encoder_select="aandcttables mpegvideoenc"
1754 h263_decoder_select="error_resilience h263_parser mpegvideo"
1755 h263_encoder_select="aandcttables mpegvideoenc"
1756 h263i_decoder_select="h263_decoder"
1757 h263p_encoder_select="h263_encoder"
1758 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1759 h264_decoder_suggest="error_resilience"
1760 huffyuv_decoder_select="dsputil"
1761 huffyuv_encoder_select="huffman"
1762 iac_decoder_select="fft mdct sinewin"
1763 imc_decoder_select="dsputil fft mdct sinewin"
1764 indeo3_decoder_select="hpeldsp"
1765 interplay_video_decoder_select="hpeldsp"
1766 jpegls_decoder_select="golomb"
1767 jpegls_encoder_select="golomb"
1768 jv_decoder_select="dsputil"
1769 lagarith_decoder_select="dsputil"
1770 ljpeg_encoder_select="aandcttables mpegvideoenc"
1771 loco_decoder_select="golomb"
1772 mdec_decoder_select="dsputil error_resilience mpegvideo"
1773 mimic_decoder_select="dsputil hpeldsp"
1774 mjpeg_decoder_select="dsputil hpeldsp"
1775 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1776 mlp_decoder_select="dsputil mlp_parser"
1777 motionpixels_decoder_select="dsputil"
1778 mp1_decoder_select="mpegaudio"
1779 mp1float_decoder_select="mpegaudio"
1780 mp2_decoder_select="mpegaudio"
1781 mp2float_decoder_select="mpegaudio"
1782 mp3_decoder_select="mpegaudio"
1783 mp3adu_decoder_select="mpegaudio"
1784 mp3adufloat_decoder_select="mpegaudio"
1785 mp3float_decoder_select="mpegaudio"
1786 mp3on4_decoder_select="mpegaudio"
1787 mp3on4float_decoder_select="mpegaudio"
1788 mpc7_decoder_select="dsputil mpegaudiodsp"
1789 mpc8_decoder_select="dsputil mpegaudiodsp"
1790 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1791 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1792 mpeg1video_decoder_select="error_resilience mpegvideo"
1793 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1794 mpeg2video_decoder_select="error_resilience mpegvideo"
1795 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1796 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1797 mpeg4_encoder_select="h263_encoder"
1798 msmpeg4v1_decoder_select="h263_decoder"
1799 msmpeg4v2_decoder_select="h263_decoder"
1800 msmpeg4v2_encoder_select="h263_encoder"
1801 msmpeg4v3_decoder_select="h263_decoder"
1802 msmpeg4v3_encoder_select="h263_encoder"
1803 mss2_decoder_select="error_resilience vc1_decoder"
1804 nellymoser_decoder_select="mdct sinewin"
1805 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1806 nuv_decoder_select="dsputil lzo"
1807 png_decoder_select="zlib"
1808 png_encoder_select="dsputil zlib"
1809 prores_decoder_select="dsputil"
1810 qcelp_decoder_select="lsp"
1811 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1812 ra_144_encoder_select="audio_frame_queue lpc"
1813 ralf_decoder_select="golomb"
1814 rtjpeg_decoder_select="dsputil"
1815 rv10_decoder_select="error_resilience h263_decoder"
1816 rv10_encoder_select="h263_encoder"
1817 rv20_decoder_select="error_resilience h263_decoder"
1818 rv20_encoder_select="h263_encoder"
1819 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1820 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1821 shorten_decoder_select="golomb"
1822 sipr_decoder_select="lsp"
1823 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
1824 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
1825 sonic_decoder_select="golomb"
1826 sonic_encoder_select="golomb"
1827 sonic_ls_encoder_select="golomb"
1828 svq1_decoder_select="hpeldsp"
1829 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1830 svq3_decoder_select="dsputil golomb h264chroma h264dsp h264pred h264qpel mpegvideo videodsp"
1831 svq3_decoder_suggest="error_resilience zlib"
1832 tak_decoder_select="dsputil"
1833 theora_decoder_select="vp3_decoder"
1834 tiff_decoder_suggest="zlib"
1835 tiff_encoder_suggest="zlib"
1836 truehd_decoder_select="mlp_parser"
1837 truemotion2_decoder_select="dsputil"
1838 tscc_decoder_select="zlib"
1839 twinvq_decoder_select="mdct lsp sinewin"
1840 utvideo_decoder_select="dsputil"
1841 utvideo_encoder_select="huffman"
1842 vble_decoder_select="dsputil"
1843 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1844 vc1image_decoder_select="vc1_decoder"
1845 vorbis_decoder_select="mdct"
1846 vorbis_encoder_select="mdct"
1847 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1848 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1849 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1850 vp6a_decoder_select="vp6_decoder"
1851 vp6f_decoder_select="vp6_decoder"
1852 vp8_decoder_select="h264pred videodsp"
1853 wmapro_decoder_select="mdct sinewin"
1854 wmav1_decoder_select="mdct sinewin"
1855 wmav1_encoder_select="mdct sinewin"
1856 wmav2_decoder_select="mdct sinewin"
1857 wmav2_encoder_select="mdct sinewin"
1858 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1859 wmv1_decoder_select="h263_decoder"
1860 wmv1_encoder_select="h263_encoder"
1861 wmv2_decoder_select="h263_decoder videodsp"
1862 wmv2_encoder_select="h263_encoder"
1863 wmv3_decoder_select="vc1_decoder"
1864 wmv3image_decoder_select="wmv3_decoder"
1865 zerocodec_decoder_select="zlib"
1866 zlib_decoder_select="zlib"
1867 zlib_encoder_select="zlib"
1868 zmbv_decoder_select="zlib"
1869 zmbv_encoder_select="zlib"
1870
1871 # hardware accelerators
1872 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1873 dxva2_deps="dxva2api_h"
1874 vaapi_deps="va_va_h"
1875 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1876 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1877 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1878
1879 h263_vaapi_hwaccel_deps="vaapi"
1880 h263_vaapi_hwaccel_select="h263_decoder"
1881 h263_vdpau_hwaccel_deps="vdpau"
1882 h263_vdpau_hwaccel_select="h263_decoder"
1883 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1884 h264_dxva2_hwaccel_deps="dxva2"
1885 h264_dxva2_hwaccel_select="h264_decoder"
1886 h264_vaapi_hwaccel_deps="vaapi"
1887 h264_vaapi_hwaccel_select="h264_decoder"
1888 h264_vda_decoder_deps="vda"
1889 h264_vda_decoder_select="h264_decoder"
1890 h264_vda_hwaccel_deps="vda"
1891 h264_vda_hwaccel_select="h264_decoder"
1892 h264_vdpau_decoder_deps="vdpau"
1893 h264_vdpau_decoder_select="h264_decoder"
1894 h264_vdpau_hwaccel_deps="vdpau"
1895 h264_vdpau_hwaccel_select="h264_decoder"
1896 mpeg_vdpau_decoder_deps="vdpau"
1897 mpeg_vdpau_decoder_select="mpeg2video_decoder"
1898 mpeg1_vdpau_decoder_deps="vdpau"
1899 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
1900 mpeg1_vdpau_hwaccel_deps="vdpau"
1901 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1902 mpeg2_crystalhd_decoder_select="crystalhd"
1903 mpeg2_dxva2_hwaccel_deps="dxva2"
1904 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1905 mpeg2_vaapi_hwaccel_deps="vaapi"
1906 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1907 mpeg2_vdpau_hwaccel_deps="vdpau"
1908 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1909 mpeg4_crystalhd_decoder_select="crystalhd"
1910 mpeg4_vaapi_hwaccel_deps="vaapi"
1911 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1912 mpeg4_vdpau_decoder_deps="vdpau"
1913 mpeg4_vdpau_decoder_select="mpeg4_decoder"
1914 mpeg4_vdpau_hwaccel_deps="vdpau"
1915 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1916 msmpeg4_crystalhd_decoder_select="crystalhd"
1917 vc1_crystalhd_decoder_select="crystalhd"
1918 vc1_dxva2_hwaccel_deps="dxva2"
1919 vc1_dxva2_hwaccel_select="vc1_decoder"
1920 vc1_vaapi_hwaccel_deps="vaapi"
1921 vc1_vaapi_hwaccel_select="vc1_decoder"
1922 vc1_vdpau_decoder_deps="vdpau"
1923 vc1_vdpau_decoder_select="vc1_decoder"
1924 vc1_vdpau_hwaccel_deps="vdpau"
1925 vc1_vdpau_hwaccel_select="vc1_decoder"
1926 wmv3_crystalhd_decoder_select="crystalhd"
1927 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1928 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1929 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1930 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1931
1932 # parsers
1933 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1934 mpeg4video_parser_select="error_resilience mpegvideo"
1935 mpegvideo_parser_select="error_resilience mpegvideo"
1936 vc1_parser_select="mpegvideo"
1937
1938 # external libraries
1939 libaacplus_encoder_deps="libaacplus"
1940 libcelt_decoder_deps="libcelt"
1941 libfaac_encoder_deps="libfaac"
1942 libfaac_encoder_select="audio_frame_queue"
1943 libfdk_aac_encoder_deps="libfdk_aac"
1944 libfdk_aac_encoder_select="audio_frame_queue"
1945 libgsm_decoder_deps="libgsm"
1946 libgsm_encoder_deps="libgsm"
1947 libgsm_ms_decoder_deps="libgsm"
1948 libgsm_ms_encoder_deps="libgsm"
1949 libilbc_decoder_deps="libilbc"
1950 libilbc_encoder_deps="libilbc"
1951 libmodplug_demuxer_deps="libmodplug"
1952 libmp3lame_encoder_deps="libmp3lame"
1953 libmp3lame_encoder_select="audio_frame_queue"
1954 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1955 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1956 libopencore_amrnb_encoder_select="audio_frame_queue"
1957 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1958 libopenjpeg_decoder_deps="libopenjpeg"
1959 libopenjpeg_encoder_deps="libopenjpeg"
1960 libopus_decoder_deps="libopus"
1961 libopus_encoder_deps="libopus"
1962 libopus_encoder_select="audio_frame_queue"
1963 libquvi_demuxer_deps="libquvi"
1964 libschroedinger_decoder_deps="libschroedinger"
1965 libschroedinger_encoder_deps="libschroedinger"
1966 libspeex_decoder_deps="libspeex"
1967 libspeex_encoder_deps="libspeex"
1968 libspeex_encoder_select="audio_frame_queue"
1969 libstagefright_h264_decoder_deps="libstagefright_h264"
1970 libtheora_encoder_deps="libtheora"
1971 libtwolame_encoder_deps="libtwolame"
1972 libvo_aacenc_encoder_deps="libvo_aacenc"
1973 libvo_aacenc_encoder_select="audio_frame_queue"
1974 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1975 libvorbis_decoder_deps="libvorbis"
1976 libvorbis_encoder_deps="libvorbis"
1977 libvorbis_encoder_select="audio_frame_queue"
1978 libvpx_vp8_decoder_deps="libvpx"
1979 libvpx_vp8_encoder_deps="libvpx"
1980 libvpx_vp9_decoder_deps="libvpx"
1981 libvpx_vp9_encoder_deps="libvpx"
1982 libx264_encoder_deps="libx264"
1983 libx264rgb_encoder_deps="libx264"
1984 libxavs_encoder_deps="libxavs"
1985 libxvid_encoder_deps="libxvid"
1986 libutvideo_decoder_deps="libutvideo"
1987 libutvideo_encoder_deps="libutvideo"
1988
1989 # demuxers / muxers
1990 ac3_demuxer_select="ac3_parser"
1991 asf_stream_muxer_select="asf_muxer"
1992 avisynth_demuxer_deps="avisynth"
1993 dirac_demuxer_select="dirac_parser"
1994 dts_demuxer_select="dca_parser"
1995 dtshd_demuxer_select="dca_parser"
1996 eac3_demuxer_select="ac3_parser"
1997 f4v_muxer_select="mov_muxer"
1998 flac_demuxer_select="flac_parser"
1999 ipod_muxer_select="mov_muxer"
2000 ismv_muxer_select="mov_muxer"
2001 libnut_demuxer_deps="libnut"
2002 libnut_muxer_deps="libnut"
2003 matroska_audio_muxer_select="matroska_muxer"
2004 matroska_demuxer_suggest="bzlib lzo zlib"
2005 mov_demuxer_suggest="zlib"
2006 mov_muxer_select="rtpenc_chain"
2007 mp3_demuxer_select="mpegaudio_parser"
2008 mp4_muxer_select="mov_muxer"
2009 mpegts_muxer_select="adts_muxer latm_muxer"
2010 mpegtsraw_demuxer_select="mpegts_demuxer"
2011 mxf_d10_muxer_select="mxf_muxer"
2012 ogg_demuxer_select="golomb"
2013 psp_muxer_select="mov_muxer"
2014 rtp_demuxer_select="sdp_demuxer"
2015 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2016 rtsp_demuxer_select="http_protocol rtpdec"
2017 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2018 sap_demuxer_select="sdp_demuxer"
2019 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2020 sdp_demuxer_select="rtpdec"
2021 smoothstreaming_muxer_select="ismv_muxer"
2022 spdif_muxer_select="aac_parser"
2023 tak_demuxer_select="tak_parser"
2024 tg2_muxer_select="mov_muxer"
2025 tgp_muxer_select="mov_muxer"
2026 vobsub_demuxer_select="mpegps_demuxer"
2027 w64_demuxer_deps="wav_demuxer"
2028 w64_muxer_deps="wav_muxer"
2029
2030 # indevs / outdevs
2031 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2032 alsa_outdev_deps="alsa_asoundlib_h"
2033 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2034 caca_outdev_deps="libcaca"
2035 dshow_indev_deps="IBaseFilter"
2036 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2037 dv1394_indev_deps="dv1394 dv_demuxer"
2038 fbdev_indev_deps="linux_fb_h"
2039 iec61883_indev_deps="libiec61883"
2040 jack_indev_deps="jack_jack_h sem_timedwait"
2041 lavfi_indev_deps="avfilter"
2042 libcdio_indev_deps="libcdio"
2043 libdc1394_indev_deps="libdc1394"
2044 libv4l2_indev_deps="libv4l2"
2045 openal_indev_deps="openal"
2046 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2047 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2048 pulse_indev_deps="libpulse"
2049 sdl_outdev_deps="sdl"
2050 sndio_indev_deps="sndio_h"
2051 sndio_outdev_deps="sndio_h"
2052 v4l_indev_deps="linux_videodev_h"
2053 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2054 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2055 vfwcap_indev_extralibs="-lavicap32"
2056 x11grab_indev_deps="x11grab"
2057
2058 # protocols
2059 bluray_protocol_deps="libbluray"
2060 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2061 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2062 ffrtmpcrypt_protocol_select="tcp_protocol"
2063 ffrtmphttp_protocol_deps="!librtmp_protocol"
2064 ffrtmphttp_protocol_select="http_protocol"
2065 gopher_protocol_select="network"
2066 httpproxy_protocol_select="tcp_protocol"
2067 http_protocol_select="tcp_protocol"
2068 https_protocol_select="tls_protocol"
2069 librtmp_protocol_deps="librtmp"
2070 librtmpe_protocol_deps="librtmp"
2071 librtmps_protocol_deps="librtmp"
2072 librtmpt_protocol_deps="librtmp"
2073 librtmpte_protocol_deps="librtmp"
2074 mmsh_protocol_select="http_protocol"
2075 mmst_protocol_select="network"
2076 rtmp_protocol_deps="!librtmp_protocol"
2077 rtmp_protocol_select="tcp_protocol"
2078 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2079 rtmps_protocol_deps="!librtmp_protocol"
2080 rtmps_protocol_select="tls_protocol"
2081 rtmpt_protocol_select="ffrtmphttp_protocol"
2082 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2083 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2084 rtp_protocol_select="udp_protocol"
2085 sctp_protocol_deps="struct_sctp_event_subscribe"
2086 sctp_protocol_select="network"
2087 srtp_protocol_select="rtp_protocol"
2088 tcp_protocol_select="network"
2089 tls_protocol_deps_any="openssl gnutls"
2090 tls_protocol_select="tcp_protocol"
2091 udp_protocol_select="network"
2092
2093 # filters
2094 aconvert_filter_deps="swresample"
2095 amovie_filter_deps="avcodec avformat"
2096 aresample_filter_deps="swresample"
2097 ass_filter_deps="libass"
2098 asyncts_filter_deps="avresample"
2099 atempo_filter_deps="avcodec rdft"
2100 blackframe_filter_deps="gpl"
2101 boxblur_filter_deps="gpl"
2102 colormatrix_filter_deps="gpl"
2103 cropdetect_filter_deps="gpl"
2104 decimate_filter_deps="gpl avcodec"
2105 delogo_filter_deps="gpl"
2106 deshake_filter_deps="avcodec"
2107 drawtext_filter_deps="libfreetype"
2108 ebur128_filter_deps="gpl"
2109 flite_filter_deps="libflite"
2110 frei0r_filter_deps="frei0r dlopen"
2111 frei0r_filter_extralibs='$ldl'
2112 frei0r_src_filter_deps="frei0r dlopen"
2113 frei0r_src_filter_extralibs='$ldl'
2114 geq_filter_deps="gpl"
2115 histeq_filter_deps="gpl"
2116 hqdn3d_filter_deps="gpl"
2117 hue_filter_deps="gpl"
2118 kerndeint_filter_deps="gpl"
2119 movie_filter_deps="avcodec avformat"
2120 mp_filter_deps="gpl avcodec swscale inline_asm"
2121 mptestsrc_filter_deps="gpl"
2122 negate_filter_deps="lut_filter"
2123 noise_filter_deps="gpl"
2124 resample_filter_deps="avresample"
2125 ocv_filter_deps="libopencv"
2126 pan_filter_deps="swresample"
2127 pp_filter_deps="gpl postproc"
2128 removelogo_filter_deps="avcodec avformat swscale"
2129 scale_filter_deps="swscale"
2130 smartblur_filter_deps="gpl swscale"
2131 showspectrum_filter_deps="avcodec rdft"
2132 stereo3d_filter_deps="gpl"
2133 subtitles_filter_deps="avformat avcodec libass"
2134 super2xsai_filter_deps="gpl"
2135 tinterlace_filter_deps="gpl"
2136 yadif_filter_deps="gpl"
2137 pixfmts_super2xsai_test_deps="super2xsai_filter"
2138 tinterlace_merge_test_deps="tinterlace_filter"
2139 tinterlace_pad_test_deps="tinterlace_filter"
2140
2141 # libraries
2142 avcodec_deps="avutil"
2143 avdevice_deps="avutil avcodec avformat"
2144 avfilter_deps="avutil"
2145 avformat_deps="avutil avcodec"
2146 avresample_deps="avutil"
2147 postproc_deps="avutil gpl"
2148 swscale_deps="avutil"
2149
2150 # programs
2151 ffmpeg_deps="avcodec avfilter avformat swscale swresample"
2152 ffmpeg_select="format_filter aformat_filter
2153                setpts_filter null_filter anull_filter"
2154 ffplay_deps="avcodec avformat swscale swresample sdl"
2155 ffplay_select="rdft crop_filter"
2156 ffprobe_deps="avcodec avformat"
2157 ffserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer"
2158 ffserver_extralibs='$ldl'
2159
2160 # documentation
2161 podpages_deps="perl"
2162 manpages_deps="perl pod2man"
2163 htmlpages_deps="texi2html"
2164 txtpages_deps="makeinfo"
2165 doc_deps_any="manpages htmlpages podpages txtpages"
2166
2167 # default parameters
2168
2169 logfile="config.log"
2170
2171 # installation paths
2172 prefix_default="/usr/local"
2173 bindir_default='${prefix}/bin'
2174 datadir_default='${prefix}/share/ffmpeg'
2175 incdir_default='${prefix}/include'
2176 libdir_default='${prefix}/lib'
2177 mandir_default='${prefix}/share/man'
2178 shlibdir_default="$libdir_default"
2179
2180 # toolchain
2181 ar_default="ar"
2182 cc_default="gcc"
2183 cxx_default="g++"
2184 host_cc_default="gcc"
2185 cp_f="cp -f"
2186 install="install"
2187 ln_s="ln -s -f"
2188 nm_default="nm -g"
2189 objformat="elf"
2190 pkg_config_default=pkg-config
2191 ranlib="ranlib"
2192 strip_default="strip"
2193 yasmexe_default="yasm"
2194
2195 nogas=":"
2196
2197 # machine
2198 arch_default=$(uname -m)
2199 cpu="generic"
2200
2201 # OS
2202 target_os_default=$(tolower $(uname -s))
2203 host_os=$target_os_default
2204
2205 # configurable options
2206 enable $PROGRAM_LIST
2207 enable $DOCUMENT_LIST
2208 enable $(filter_out avresample $LIBRARY_LIST)
2209 enable stripping
2210
2211 enable asm
2212 enable debug
2213 enable doc
2214 enable optimizations
2215 enable runtime_cpudetect
2216 enable safe_bitstream_reader
2217 enable static
2218 enable swscale_alpha
2219
2220 # By default, enable only those hwaccels that have no external dependencies.
2221 enable dxva2 vdpau
2222
2223 # build settings
2224 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2225 FFSERVERLDFLAGS=-Wl,-E
2226 LIBPREF="lib"
2227 LIBSUF=".a"
2228 FULLNAME='$(NAME)$(BUILDSUF)'
2229 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2230 SLIBPREF="lib"
2231 SLIBSUF=".so"
2232 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2233 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2234 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2235 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2236 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2237 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2238
2239 asflags_filter=echo
2240 cflags_filter=echo
2241 ldflags_filter=echo
2242
2243 AS_C='-c'
2244 AS_O='-o $@'
2245 CC_C='-c'
2246 CC_E='-E -o $@'
2247 CC_O='-o $@'
2248 CXX_C='-c'
2249 CXX_O='-o $@'
2250 LD_O='-o $@'
2251 LD_LIB='-l%'
2252 LD_PATH='-L'
2253 HOSTCC_C='-c'
2254 HOSTCC_O='-o $@'
2255 HOSTLD_O='-o $@'
2256
2257 host_cflags='-O3 -g'
2258 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
2259 host_libs='-lm'
2260 host_cflags_filter=echo
2261 host_ldflags_filter=echo
2262
2263 target_path='$(CURDIR)'
2264
2265 # since the object filename is not given with the -MM flag, the compiler
2266 # is only able to print the basename, and we must add the path ourselves
2267 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2268 DEPFLAGS='-MM'
2269
2270 # find source path
2271 if test -f configure; then
2272     source_path=.
2273 else
2274     source_path=$(cd $(dirname "$0"); pwd)
2275     echo "$source_path" | grep -q '[[:blank:]]' &&
2276         die "Out of tree builds are impossible with whitespace in source path."
2277     test -e "$source_path/config.h" &&
2278         die "Out of tree builds are impossible with config.h in source dir."
2279 fi
2280
2281 for v in "$@"; do
2282     r=${v#*=}
2283     l=${v%"$r"}
2284     r=$(sh_quote "$r")
2285     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2286 done
2287
2288 find_things(){
2289     thing=$1
2290     pattern=$2
2291     file=$source_path/$3
2292     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2293 }
2294
2295 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2296 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2297 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2298 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2299 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2300 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2301 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2302 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2303 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2304 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2305 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2306
2307 ALL_COMPONENTS="
2308     $BSF_LIST
2309     $DECODER_LIST
2310     $DEMUXER_LIST
2311     $ENCODER_LIST
2312     $FILTER_LIST
2313     $HWACCEL_LIST
2314     $INDEV_LIST
2315     $MUXER_LIST
2316     $OUTDEV_LIST
2317     $PARSER_LIST
2318     $PROTOCOL_LIST
2319 "
2320
2321 for n in $COMPONENT_LIST; do
2322     v=$(toupper ${n%s})_LIST
2323     eval enable \$$v
2324     eval ${n}_if_any="\$$v"
2325 done
2326
2327 enable $ARCH_EXT_LIST
2328
2329 die_unknown(){
2330     echo "Unknown option \"$1\"."
2331     echo "See $0 --help for available options."
2332     exit 1
2333 }
2334
2335 print_3_columns() {
2336     cat | tr ' ' '\n' | sort | pr -r -3 -t
2337 }
2338
2339 show_list() {
2340     suffix=_$1
2341     shift
2342     echo $* | sed s/$suffix//g | print_3_columns
2343     exit 0
2344 }
2345
2346 rand_list(){
2347     IFS=', '
2348     set -- $*
2349     unset IFS
2350     for thing; do
2351         comp=${thing%:*}
2352         prob=${thing#$comp}
2353         prob=${prob#:}
2354         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2355         echo "prob ${prob:-0.5}"
2356         printf '%s\n' $comp
2357     done
2358 }
2359
2360 do_random(){
2361     action=$1
2362     shift
2363     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2364     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2365 }
2366
2367 for opt do
2368     optval="${opt#*=}"
2369     case "$opt" in
2370         --extra-ldflags=*)
2371             add_ldflags $optval
2372         ;;
2373         --extra-libs=*)
2374             add_extralibs $optval
2375         ;;
2376         --disable-devices)
2377             disable $INDEV_LIST $OUTDEV_LIST
2378         ;;
2379         --enable-debug=*)
2380             debuglevel="$optval"
2381         ;;
2382         --disable-programs)
2383             disable $PROGRAM_LIST
2384         ;;
2385         --disable-everything)
2386             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2387         ;;
2388         --disable-all)
2389             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2390             disable $LIBRARY_LIST $PROGRAM_LIST doc
2391         ;;
2392         --enable-random|--disable-random)
2393             action=${opt%%-random}
2394             do_random ${action#--} $COMPONENT_LIST
2395         ;;
2396         --enable-random=*|--disable-random=*)
2397             action=${opt%%-random=*}
2398             do_random ${action#--} $optval
2399         ;;
2400         --enable-*=*|--disable-*=*)
2401             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2402             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2403             eval list=\$$(toupper $thing)_LIST
2404             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2405             list=$(filter "$name" $list)
2406             [ "$list" = "" ] && warn "Option $opt did not match anything"
2407             $action $list
2408         ;;
2409         --enable-?*|--disable-?*)
2410             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2411             if is_in $option $COMPONENT_LIST; then
2412                 test $action = disable && action=unset
2413                 eval $action \$$(toupper ${option%s})_LIST
2414             elif is_in $option $CMDLINE_SELECT; then
2415                 $action $option
2416             else
2417                 die_unknown $opt
2418             fi
2419         ;;
2420         --list-*)
2421             NAME="${opt#--list-}"
2422             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2423             NAME=${NAME%s}
2424             eval show_list $NAME \$$(toupper $NAME)_LIST
2425         ;;
2426         --help|-h) show_help
2427         ;;
2428         --fatal-warnings) enable fatal_warnings
2429         ;;
2430         *)
2431             optname="${opt%%=*}"
2432             optname="${optname#--}"
2433             optname=$(echo "$optname" | sed 's/-/_/g')
2434             if is_in $optname $CMDLINE_SET; then
2435                 eval $optname='$optval'
2436             elif is_in $optname $CMDLINE_APPEND; then
2437                 append $optname "$optval"
2438             else
2439                 die_unknown $opt
2440             fi
2441         ;;
2442     esac
2443 done
2444
2445 disabled logging && logfile=/dev/null
2446
2447 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2448 set >> $logfile
2449
2450 test -n "$cross_prefix" && enable cross_compile
2451
2452 if enabled cross_compile; then
2453     test -n "$arch" && test -n "$target_os" ||
2454         die "Must specify target arch and OS when cross-compiling"
2455 fi
2456
2457 ar_default="${cross_prefix}${ar_default}"
2458 cc_default="${cross_prefix}${cc_default}"
2459 cxx_default="${cross_prefix}${cxx_default}"
2460 nm_default="${cross_prefix}${nm_default}"
2461 pkg_config_default="${cross_prefix}${pkg_config_default}"
2462 ranlib="${cross_prefix}${ranlib}"
2463 strip_default="${cross_prefix}${strip_default}"
2464
2465 sysinclude_default="${sysroot}/usr/include"
2466
2467 case "$toolchain" in
2468     clang-asan)
2469         cc_default="clang"
2470         add_cflags  -fsanitize=address
2471         add_ldflags -fsanitize=address
2472     ;;
2473     clang-tsan)
2474         cc_default="clang"
2475         add_cflags  -fsanitize=thread -pie
2476         add_ldflags -fsanitize=thread -pie
2477     ;;
2478     msvc)
2479         cc_default="c99wrap cl"
2480         ld_default="c99wrap link"
2481         nm_default="dumpbin -symbols"
2482         ar_default="lib"
2483         target_os_default="win32"
2484     ;;
2485     gcov)
2486         add_cflags  -fprofile-arcs -ftest-coverage
2487         add_ldflags -fprofile-arcs -ftest-coverage
2488     ;;
2489     ?*)
2490         die "Unknown toolchain $toolchain"
2491     ;;
2492 esac
2493
2494 set_default arch cc cxx pkg_config strip sysinclude target_os yasmexe
2495 enabled cross_compile || host_cc_default=$cc
2496 set_default host_cc
2497
2498 if ! $pkg_config --version >/dev/null 2>&1; then
2499     warn "$pkg_config not found, library detection may fail."
2500     pkg_config=false
2501 fi
2502
2503 exesuf() {
2504     case $1 in
2505         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2506     esac
2507 }
2508
2509 EXESUF=$(exesuf $target_os)
2510 HOSTEXESUF=$(exesuf $host_os)
2511
2512 # set temporary file name
2513 : ${TMPDIR:=$TEMPDIR}
2514 : ${TMPDIR:=$TMP}
2515 : ${TMPDIR:=/tmp}
2516
2517 if ! check_cmd mktemp -u XXXXXX; then
2518     # simple replacement for missing mktemp
2519     # NOT SAFE FOR GENERAL USE
2520     mktemp(){
2521         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2522     }
2523 fi
2524
2525 tmpfile(){
2526     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2527         (set -C; exec > $tmp) 2>/dev/null ||
2528         die "Unable to create temporary file in $TMPDIR."
2529     append TMPFILES $tmp
2530     eval $1=$tmp
2531 }
2532
2533 trap 'rm -f -- $TMPFILES' EXIT
2534
2535 tmpfile TMPASM .asm
2536 tmpfile TMPC   .c
2537 tmpfile TMPCPP .cpp
2538 tmpfile TMPE   $EXESUF
2539 tmpfile TMPH   .h
2540 tmpfile TMPO   .o
2541 tmpfile TMPS   .S
2542 tmpfile TMPSH  .sh
2543 tmpfile TMPV   .ver
2544
2545 unset -f mktemp
2546
2547 chmod +x $TMPE
2548
2549 # make sure we can execute files in $TMPDIR
2550 cat > $TMPSH 2>> $logfile <<EOF
2551 #! /bin/sh
2552 EOF
2553 chmod +x $TMPSH >> $logfile 2>&1
2554 if ! $TMPSH >> $logfile 2>&1; then
2555     cat <<EOF
2556 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2557 variable to another directory and make sure that it is not mounted noexec.
2558 EOF
2559     die "Sanity test failed."
2560 fi
2561
2562 ccc_flags(){
2563     for flag; do
2564         case $flag in
2565             -std=c99)           echo -c99                       ;;
2566             -mcpu=*)            echo -arch ${flag#*=}           ;;
2567             -mieee)             echo -ieee                      ;;
2568             -O*|-fast)          echo $flag                      ;;
2569             -fno-math-errno)    echo -assume nomath_errno       ;;
2570             -g)                 echo -g3                        ;;
2571             -Wall)              echo -msg_enable level2         ;;
2572             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2573             -Wl,*)              echo $flag                      ;;
2574             -f*|-W*)                                            ;;
2575             *)                  echo $flag                      ;;
2576         esac
2577    done
2578 }
2579
2580 msvc_flags(){
2581     for flag; do
2582         case $flag in
2583             -fomit-frame-pointer) echo -Oy ;;
2584             -g)                   echo -Z7 ;;
2585             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389 \
2586                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2587                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2588                                        -wd4554 \
2589                                        -wd4996 -wd4273 ;;
2590             -std=c99)             ;;
2591             -fno-math-errno)      ;;
2592             -fno-common)          ;;
2593             -fno-signed-zeros)    ;;
2594             -fPIC)                ;;
2595             -lz)                  echo zlib.lib ;;
2596             -lavifil32)           echo vfw32.lib ;;
2597             -lavicap32)           echo vfw32.lib user32.lib ;;
2598             -l*)                  echo ${flag#-l}.lib ;;
2599             *)                    echo $flag ;;
2600         esac
2601     done
2602 }
2603
2604 pgi_flags(){
2605     for flag; do
2606         case $flag in
2607             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2608             -fomit-frame-pointer) echo -Mnoframe ;;
2609             -g)                   echo -gopt ;;
2610             *)                    echo $flag ;;
2611         esac
2612     done
2613 }
2614
2615 suncc_flags(){
2616     for flag; do
2617         case $flag in
2618             -march=*|-mcpu=*)
2619                 case "${flag#*=}" in
2620                     native)                   echo -xtarget=native       ;;
2621                     v9|niagara)               echo -xarch=sparc          ;;
2622                     ultrasparc)               echo -xarch=sparcvis       ;;
2623                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2624                     i586|pentium)             echo -xchip=pentium        ;;
2625                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2626                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2627                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2628                     pentium4*)          echo -xtarget=pentium4           ;;
2629                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2630                     *-sse3)             echo -xarch=sse3                 ;;
2631                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2632                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2633                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2634                     amdfam10|barcelona)       echo -xtarget=barcelona    ;;
2635                     bdver*)                   echo -xarch=avx            ;;
2636                     athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2637                     k8|opteron|athlon64|athlon-fx)
2638                                               echo -xarch=sse2a          ;;
2639                     athlon*)                  echo -xarch=pentium_proa   ;;
2640                 esac
2641                 ;;
2642             -std=c99)             echo -xc99              ;;
2643             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2644             -fPIC)                echo -KPIC -xcode=pic32 ;;
2645             -W*,*)                echo $flag              ;;
2646             -f*-*|-W*|-mimpure-text)                      ;;
2647             -shared)              echo -G                 ;;
2648             *)                    echo $flag              ;;
2649         esac
2650     done
2651 }
2652
2653 tms470_flags(){
2654     for flag; do
2655         case $flag in
2656             -march=*|-mcpu=*)
2657                 case "${flag#*=}" in
2658                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2659                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2660                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2661                     armv6*|arm11*)          echo -mv=6   ;;
2662                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2663                                             echo -mv=5e  ;;
2664                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2665                 esac
2666                 ;;
2667             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2668             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2669             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2670             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2671             -msoft-float)   echo --float_support=vfplib       ;;
2672             -O[0-3]|-mf=*)  echo $flag                        ;;
2673             -g)             echo -g -mn                       ;;
2674             -pds=*)         echo $flag                        ;;
2675             -D*|-I*)        echo $flag                        ;;
2676             --gcc|--abi=*)  echo $flag                        ;;
2677             -me)            echo $flag                        ;;
2678         esac
2679     done
2680 }
2681
2682 probe_cc(){
2683     pfx=$1
2684     _cc=$2
2685
2686     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2687     unset _ld_o _ldflags _ld_lib _ld_path
2688     unset _depflags _DEPCMD _DEPFLAGS
2689     _flags_filter=echo
2690
2691     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2692         _type=llvm_gcc
2693         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2694         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2695         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2696         _cflags_speed='-O3'
2697         _cflags_size='-Os'
2698     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2699         _type=gcc
2700         gcc_version=$($_cc --version | head -n1)
2701         gcc_basever=$($_cc -dumpversion)
2702         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2703         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2704         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2705         if ! $_cc -dumpversion | grep -q '^2\.'; then
2706             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2707         fi
2708         _cflags_speed='-O3'
2709         _cflags_size='-Os'
2710     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2711         _type=icc
2712         _ident=$($_cc --version | head -n1)
2713         _depflags='-MMD'
2714         _cflags_speed='-O3'
2715         _cflags_size='-Os'
2716         _cflags_noopt='-O1'
2717     elif $_cc -v 2>&1 | grep -q xlc; then
2718         _type=xlc
2719         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2720         _cflags_speed='-O5'
2721         _cflags_size='-O5 -qcompact'
2722     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2723         _type=ccc
2724         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2725         _DEPFLAGS='-M'
2726         _cflags_speed='-fast'
2727         _cflags_size='-O1'
2728         _flags_filter=ccc_flags
2729     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2730         test -d "$sysroot" || die "No valid sysroot specified."
2731         _type=armcc
2732         _ident=$($_cc --vsn | head -n1)
2733         armcc_conf="$PWD/armcc.conf"
2734         $_cc --arm_linux_configure                 \
2735              --arm_linux_config_file="$armcc_conf" \
2736              --configure_sysroot="$sysroot"        \
2737              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2738              die "Error creating armcc configuration file."
2739         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2740         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2741         as_default="${cross_prefix}gcc"
2742         _depflags='-MMD'
2743         _cflags_speed='-O3'
2744         _cflags_size='-Os'
2745     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2746         _type=tms470
2747         _ident=$($_cc -version | head -n1 | tr -s ' ')
2748         _flags='--gcc --abi=eabi -me'
2749         _cc_e='-ppl -fe=$@'
2750         _cc_o='-fe=$@'
2751         _depflags='-ppa -ppd=$(@:.o=.d)'
2752         _cflags_speed='-O3 -mf=5'
2753         _cflags_size='-O3 -mf=2'
2754         _flags_filter=tms470_flags
2755     elif $_cc -v 2>&1 | grep -q clang; then
2756         _type=clang
2757         _ident=$($_cc --version | head -n1)
2758         _depflags='-MMD'
2759         _cflags_speed='-O3'
2760         _cflags_size='-Os'
2761     elif $_cc -V 2>&1 | grep -q Sun; then
2762         _type=suncc
2763         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2764         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2765         _DEPFLAGS='-xM1 -xc99'
2766         _ldflags='-std=c99'
2767         _cflags_speed='-O5'
2768         _cflags_size='-O5 -xspace'
2769         _flags_filter=suncc_flags
2770     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2771         _type=pathscale
2772         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2773         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2774         _cflags_speed='-O2'
2775         _cflags_size='-Os'
2776         _flags_filter='filter_out -Wdisabled-optimization'
2777     elif $_cc -v 2>&1 | grep -q Open64; then
2778         _type=open64
2779         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2780         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2781         _cflags_speed='-O2'
2782         _cflags_size='-Os'
2783         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2784     elif $_cc -V 2>&1 | grep -q Portland; then
2785         _type=pgi
2786         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2787         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2788         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2789         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2790         _cflags_noopt="-O1"
2791         _flags_filter=pgi_flags
2792     elif $_cc 2>&1 | grep -q Microsoft; then
2793         _type=msvc
2794         _ident=$($cc 2>&1 | head -n1)
2795         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2796         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2797         _cflags_speed="-O2"
2798         _cflags_size="-O1"
2799         # Nonstandard output options, to avoid msys path conversion issues, relies on wrapper to remap it
2800         if $_cc 2>&1 | grep -q Linker; then
2801             _ld_o='-out $@'
2802         else
2803             _ld_o='-Fe$@'
2804         fi
2805         _cc_o='-Fo $@'
2806         _cc_e='-P -Fi $@'
2807         _flags_filter=msvc_flags
2808         _ld_lib='lib%.a'
2809         _ld_path='-libpath:'
2810         _flags='-nologo'
2811         _cflags='-D_USE_MATH_DEFINES -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2812         if [ $pfx = hostcc ]; then
2813             append _cflags -Dsnprintf=_snprintf
2814         fi
2815         disable stripping
2816     fi
2817
2818     eval ${pfx}_type=\$_type
2819     eval ${pfx}_ident=\$_ident
2820 }
2821
2822 set_ccvars(){
2823     eval ${1}_C=\${_cc_c-\${${1}_C}}
2824     eval ${1}_E=\${_cc_e-\${${1}_E}}
2825     eval ${1}_O=\${_cc_o-\${${1}_O}}
2826
2827     if [ -n "$_depflags" ]; then
2828         eval ${1}_DEPFLAGS=\$_depflags
2829     else
2830         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2831         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2832         eval DEP${1}FLAGS=\$_flags
2833     fi
2834 }
2835
2836 probe_cc cc "$cc"
2837 cflags_filter=$_flags_filter
2838 cflags_speed=$_cflags_speed
2839 cflags_size=$_cflags_size
2840 cflags_noopt=$_cflags_noopt
2841 add_cflags $_flags $_cflags
2842 cc_ldflags=$_ldflags
2843 set_ccvars CC
2844
2845 probe_cc hostcc "$host_cc"
2846 host_cflags_filter=$_flags_filter
2847 add_host_cflags  $_flags $_cflags
2848 set_ccvars HOSTCC
2849
2850 test -n "$cc_type" && enable $cc_type ||
2851     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2852
2853 : ${as_default:=$cc}
2854 : ${dep_cc_default:=$cc}
2855 : ${ld_default:=$cc}
2856 : ${host_ld_default:=$host_cc}
2857 set_default ar as dep_cc ld host_ld
2858
2859 probe_cc as "$as"
2860 asflags_filter=$_flags_filter
2861 add_asflags $_flags $_cflags
2862 set_ccvars AS
2863
2864 probe_cc ld "$ld"
2865 ldflags_filter=$_flags_filter
2866 add_ldflags $_flags $_ldflags
2867 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2868 LD_O=${_ld_o-$LD_O}
2869 LD_LIB=${_ld_lib-$LD_LIB}
2870 LD_PATH=${_ld_path-$LD_PATH}
2871
2872 probe_cc hostld "$host_ld"
2873 host_ldflags_filter=$_flags_filter
2874 add_host_ldflags $_flags $_ldflags
2875 HOSTLD_O=${_ld_o-$HOSTLD_O}
2876
2877 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2878     probe_cc depcc "$dep_cc"
2879     CCDEP=${_DEPCMD:-$DEPCMD}
2880     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2881     DEPCCFLAGS=$_flags
2882 fi
2883
2884 if $ar 2>&1 | grep -q Microsoft; then
2885     arflags="-nologo"
2886     ar_o='-out:$@'
2887 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2888     arflags="rq"
2889     ar_o='$@'
2890 else
2891     arflags="rc"
2892     ar_o='$@'
2893 fi
2894
2895 add_cflags $extra_cflags
2896 add_cxxflags $extra_cxxflags
2897 add_asflags $extra_cflags
2898
2899 if test -n "$sysroot"; then
2900     case "$cc_type" in
2901         gcc|llvm_gcc|clang)
2902             add_cppflags --sysroot="$sysroot"
2903             add_ldflags --sysroot="$sysroot"
2904         ;;
2905         tms470)
2906             add_cppflags -I"$sysinclude"
2907             add_ldflags  --sysroot="$sysroot"
2908         ;;
2909     esac
2910 fi
2911
2912 if test "$cpu" = host; then
2913     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2914
2915     case "$cc_type" in
2916         gcc|llvm_gcc)
2917             check_native(){
2918                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2919                 sed -n "/cc1.*$1=/{
2920                             s/.*$1=\\([^ ]*\\).*/\\1/
2921                             p
2922                             q
2923                         }" $TMPE
2924             }
2925             cpu=$(check_native -march || check_native -mcpu)
2926         ;;
2927     esac
2928
2929     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2930 fi
2931
2932 # Deal with common $arch aliases
2933 case "$arch" in
2934     aarch64|arm64)
2935         arch="aarch64"
2936     ;;
2937     arm*|iPad*)
2938         arch="arm"
2939     ;;
2940     mips*|IP*)
2941         arch="mips"
2942     ;;
2943     parisc*|hppa*)
2944         arch="parisc"
2945     ;;
2946     "Power Macintosh"|ppc*|powerpc*)
2947         arch="ppc"
2948     ;;
2949     s390|s390x)
2950         arch="s390"
2951     ;;
2952     sh4|sh)
2953         arch="sh4"
2954     ;;
2955     sun4u|sparc*)
2956         arch="sparc"
2957     ;;
2958     tilegx|tile-gx)
2959         arch="tilegx"
2960     ;;
2961     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
2962         arch="x86"
2963     ;;
2964 esac
2965
2966 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2967 enable $arch
2968
2969 # Add processor-specific flags
2970 if enabled aarch64; then
2971
2972     case $cpu in
2973         armv*)
2974             cpuflags="-march=$cpu"
2975         ;;
2976         *)
2977             cpuflags="-mcpu=$cpu"
2978         ;;
2979     esac
2980
2981 elif enabled alpha; then
2982
2983     cpuflags="-mcpu=$cpu"
2984
2985 elif enabled arm; then
2986
2987     check_arm_arch() {
2988         check_cpp_condition stddef.h \
2989             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2990             $cpuflags
2991     }
2992
2993     probe_arm_arch() {
2994         if   check_arm_arch 4;        then echo armv4;
2995         elif check_arm_arch 4T;       then echo armv4t;
2996         elif check_arm_arch 5;        then echo armv5;
2997         elif check_arm_arch 5E;       then echo armv5e;
2998         elif check_arm_arch 5T;       then echo armv5t;
2999         elif check_arm_arch 5TE;      then echo armv5te;
3000         elif check_arm_arch 5TEJ;     then echo armv5te;
3001         elif check_arm_arch 6;        then echo armv6;
3002         elif check_arm_arch 6J;       then echo armv6j;
3003         elif check_arm_arch 6K;       then echo armv6k;
3004         elif check_arm_arch 6Z;       then echo armv6z;
3005         elif check_arm_arch 6ZK;      then echo armv6zk;
3006         elif check_arm_arch 6T2;      then echo armv6t2;
3007         elif check_arm_arch 7;        then echo armv7;
3008         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3009         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3010         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3011         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3012         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3013         fi
3014     }
3015
3016     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3017
3018     case $cpu in
3019         armv*)
3020             cpuflags="-march=$cpu"
3021             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3022         ;;
3023         *)
3024             cpuflags="-mcpu=$cpu"
3025             case $cpu in
3026                 cortex-a*)                               subarch=armv7a  ;;
3027                 cortex-r*)                               subarch=armv7r  ;;
3028                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3029                 arm11*)                                  subarch=armv6   ;;
3030                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3031                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3032                 *)                             subarch=$(probe_arm_arch) ;;
3033             esac
3034         ;;
3035     esac
3036
3037     case "$subarch" in
3038         armv5t*)    enable fast_clz                ;;
3039         armv[6-8]*) enable fast_clz fast_unaligned ;;
3040     esac
3041
3042 elif enabled avr32; then
3043
3044     case $cpu in
3045         ap7[02]0[0-2])
3046             subarch="avr32_ap"
3047             cpuflags="-mpart=$cpu"
3048         ;;
3049         ap)
3050             subarch="avr32_ap"
3051             cpuflags="-march=$cpu"
3052         ;;
3053         uc3[ab]*)
3054             subarch="avr32_uc"
3055             cpuflags="-mcpu=$cpu"
3056         ;;
3057         uc)
3058             subarch="avr32_uc"
3059             cpuflags="-march=$cpu"
3060         ;;
3061     esac
3062
3063 elif enabled bfin; then
3064
3065     cpuflags="-mcpu=$cpu"
3066
3067 elif enabled mips; then
3068
3069     cpuflags="-march=$cpu"
3070
3071     case $cpu in
3072         24kc)
3073             disable mipsfpu
3074             disable mipsdspr1
3075             disable mipsdspr2
3076         ;;
3077         24kf*)
3078             disable mipsdspr1
3079             disable mipsdspr2
3080         ;;
3081         24kec|34kc|1004kc)
3082             disable mipsfpu
3083             disable mipsdspr2
3084         ;;
3085         24kef*|34kf*|1004kf*)
3086             disable mipsdspr2
3087         ;;
3088         74kc)
3089             disable mipsfpu
3090         ;;
3091     esac
3092
3093 elif enabled ppc; then
3094
3095     case $(tolower $cpu) in
3096         601|ppc601|powerpc601)
3097             cpuflags="-mcpu=601"
3098             disable altivec
3099         ;;
3100         603*|ppc603*|powerpc603*)
3101             cpuflags="-mcpu=603"
3102             disable altivec
3103         ;;
3104         604*|ppc604*|powerpc604*)
3105             cpuflags="-mcpu=604"
3106             disable altivec
3107         ;;
3108         g3|75*|ppc75*|powerpc75*)
3109             cpuflags="-mcpu=750"
3110             disable altivec
3111         ;;
3112         g4|745*|ppc745*|powerpc745*)
3113             cpuflags="-mcpu=7450"
3114         ;;
3115         74*|ppc74*|powerpc74*)
3116             cpuflags="-mcpu=7400"
3117         ;;
3118         g5|970|ppc970|powerpc970)
3119             cpuflags="-mcpu=970"
3120         ;;
3121         power[3-7]*)
3122             cpuflags="-mcpu=$cpu"
3123         ;;
3124         cell)
3125             cpuflags="-mcpu=cell"
3126             enable ldbrx
3127         ;;
3128         e500mc)
3129             cpuflags="-mcpu=e500mc"
3130             disable altivec
3131         ;;
3132         e500v2)
3133             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3134             disable altivec
3135         ;;
3136         e500)
3137             cpuflags="-mcpu=8540 -mhard-float"
3138             disable altivec
3139         ;;
3140     esac
3141
3142 elif enabled sparc; then
3143
3144     case $cpu in
3145         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3146             cpuflags="-mcpu=$cpu"
3147             disable vis
3148         ;;
3149         ultrasparc*|niagara[234])
3150             cpuflags="-mcpu=$cpu"
3151         ;;
3152     esac
3153
3154 elif enabled x86; then
3155
3156     case $cpu in
3157         i[345]86|pentium)
3158             cpuflags="-march=$cpu"
3159             disable mmx
3160         ;;
3161         # targets that do NOT support conditional mov (cmov)
3162         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3163             cpuflags="-march=$cpu"
3164             disable cmov
3165         ;;
3166         # targets that do support conditional mov (cmov)
3167         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3168             cpuflags="-march=$cpu"
3169             enable cmov
3170             enable fast_cmov
3171         ;;
3172         # targets that do support conditional mov but on which it's slow
3173         pentium4|pentium4m|prescott|nocona)
3174             cpuflags="-march=$cpu"
3175             enable cmov
3176             disable fast_cmov
3177         ;;
3178     esac
3179
3180 fi
3181
3182 if [ "$cpu" != generic ]; then
3183     add_cflags  $cpuflags
3184     add_asflags $cpuflags
3185 fi
3186
3187 # compiler sanity check
3188 check_exec <<EOF
3189 int main(void){ return 0; }
3190 EOF
3191 if test "$?" != 0; then
3192     echo "$cc is unable to create an executable file."
3193     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3194         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3195         echo "Only do this if you know what cross compiling means."
3196     fi
3197     die "C compiler test failed."
3198 fi
3199
3200 add_cppflags -D_ISOC99_SOURCE
3201 add_cxxflags -D__STDC_CONSTANT_MACROS
3202 check_cflags -std=c99
3203 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3204 #include <stdlib.h>
3205 EOF
3206 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3207 #include <stdlib.h>
3208 EOF
3209
3210 check_host_cflags -std=c99
3211 check_host_cflags -Wall
3212
3213 check_64bit(){
3214     arch32=$1
3215     arch64=$2
3216     expr=$3
3217     check_code cc "" "int test[2*($expr) - 1]" &&
3218         subarch=$arch64 || subarch=$arch32
3219 }
3220
3221 case "$arch" in
3222     aarch64|alpha|ia64)
3223         spic=$shared
3224     ;;
3225     mips)
3226         check_64bit mips mips64 '_MIPS_SIM > 1'
3227         spic=$shared
3228     ;;
3229     parisc)
3230         check_64bit parisc parisc64 'sizeof(void *) > 4'
3231         spic=$shared
3232     ;;
3233     ppc)
3234         check_64bit ppc ppc64 'sizeof(void *) > 4'
3235         spic=$shared
3236     ;;
3237     sparc)
3238         check_64bit sparc sparc64 'sizeof(void *) > 4'
3239         spic=$shared
3240     ;;
3241     x86)
3242         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3243         if test "$subarch" = "x86_64"; then
3244             spic=$shared
3245         fi
3246     ;;
3247     ppc)
3248         check_cc <<EOF && subarch="ppc64"
3249         int test[(int)sizeof(char*) - 7];
3250 EOF
3251     ;;
3252 esac
3253
3254 enable $subarch
3255 enabled spic && enable pic
3256
3257 # OS specific
3258 case $target_os in
3259     haiku)
3260         prefix_default="/boot/common"
3261         network_extralibs="-lnetwork"
3262         host_libs=
3263         ;;
3264     sunos)
3265         FFSERVERLDFLAGS=""
3266         SHFLAGS='-shared -Wl,-h,$$(@F)'
3267         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3268         network_extralibs="-lsocket -lnsl"
3269         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3270         # When using suncc to build, the Solaris linker will mark
3271         # an executable with each instruction set encountered by
3272         # the Solaris assembler.  As our libraries contain their own
3273         # guards for processor-specific code, instead suppress
3274         # generation of the HWCAPS ELF section on Solaris x86 only.
3275         enabled_all suncc x86 && echo "hwcap_1 = OVERRIDE;" > mapfile && add_ldflags -Wl,-M,mapfile
3276         nm_default='nm -P -g'
3277         ;;
3278     netbsd)
3279         disable symver
3280         oss_indev_extralibs="-lossaudio"
3281         oss_outdev_extralibs="-lossaudio"
3282         enabled gcc || check_ldflags -Wl,-zmuldefs
3283         ;;
3284     openbsd|bitrig)
3285         disable symver
3286         SHFLAGS='-shared'
3287         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3288         SLIB_INSTALL_LINKS=
3289         oss_indev_extralibs="-lossaudio"
3290         oss_outdev_extralibs="-lossaudio"
3291         ;;
3292     dragonfly)
3293         disable symver
3294         ;;
3295     freebsd)
3296         ;;
3297     bsd/os)
3298         add_extralibs -lpoll -lgnugetopt
3299         strip="strip -d"
3300         ;;
3301     darwin)
3302         gas="gas-preprocessor.pl $cc"
3303         enabled ppc && add_asflags -force_cpusubtype_ALL
3304         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3305         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3306         strip="${strip} -x"
3307         add_ldflags -Wl,-dynamic,-search_paths_first
3308         SLIBSUF=".dylib"
3309         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3310         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3311         FFSERVERLDFLAGS=-Wl,-bind_at_load
3312         objformat="macho"
3313         enabled x86_64 && objformat="macho64"
3314         enabled_any pic shared ||
3315             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3316         ;;
3317     mingw32*)
3318         if test $target_os = "mingw32ce"; then
3319             disable network
3320         else
3321             target_os=mingw32
3322         fi
3323         LIBTARGET=i386
3324         if enabled x86_64; then
3325             LIBTARGET="i386:x86-64"
3326         elif enabled arm; then
3327             LIBTARGET=arm-wince
3328         fi
3329         shlibdir_default="$bindir_default"
3330         SLIBPREF=""
3331         SLIBSUF=".dll"
3332         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3333         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3334         dlltool="${cross_prefix}dlltool"
3335         if check_cmd lib.exe -list; then
3336             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3337             if enabled x86_64; then
3338                 LIBTARGET=x64
3339             fi
3340         elif check_cmd $dlltool --version; then
3341             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3342         fi
3343         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3344         SLIB_INSTALL_LINKS=
3345         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3346         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3347         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3348         objformat="win32"
3349         ranlib=:
3350         enable dos_paths
3351         ;;
3352     win32|win64)
3353         if enabled shared; then
3354             # Link to the import library instead of the normal static library
3355             # for shared libs.
3356             LD_LIB='%.lib'
3357             # Cannot build shared and static libraries at the same time with
3358             # MSVC.
3359             disable static
3360         fi
3361         shlibdir_default="$bindir_default"
3362         SLIBPREF=""
3363         SLIBSUF=".dll"
3364         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3365         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3366         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3367         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3368         SLIB_INSTALL_LINKS=
3369         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3370         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3371         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3372         objformat="win32"
3373         ranlib=:
3374         enable dos_paths
3375         ;;
3376     cygwin*)
3377         target_os=cygwin
3378         shlibdir_default="$bindir_default"
3379         SLIBPREF="cyg"
3380         SLIBSUF=".dll"
3381         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3382         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3383         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3384         SLIB_INSTALL_LINKS=
3385         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3386         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3387         objformat="win32"
3388         enable dos_paths
3389         ;;
3390     *-dos|freedos|opendos)
3391         network_extralibs="-lsocket"
3392         objformat="coff"
3393         enable dos_paths
3394         add_cppflags -U__STRICT_ANSI__
3395         ;;
3396     linux)
3397         enable dv1394
3398         ;;
3399     irix*)
3400         target_os=irix
3401         ranlib="echo ignoring ranlib"
3402         ;;
3403     os/2*)
3404         strip="lxlite -CS"
3405         ln_s="cp -f"
3406         objformat="aout"
3407         add_cppflags -D_GNU_SOURCE
3408         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3409         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3410         FFSERVERLDFLAGS=""
3411         LIBSUF="_s.a"
3412         SLIBPREF=""
3413         SLIBSUF=".dll"
3414         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3415         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3416         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3417             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3418             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3419             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3420             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3421             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3422         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3423             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3424         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3425         enable dos_paths
3426         enable_weak os2threads
3427         ;;
3428     gnu/kfreebsd)
3429         add_cppflags -D_BSD_SOURCE
3430         ;;
3431     gnu)
3432         ;;
3433     qnx)
3434         add_cppflags -D_QNX_SOURCE
3435         network_extralibs="-lsocket"
3436         ;;
3437     symbian)
3438         SLIBSUF=".dll"
3439         enable dos_paths
3440         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3441         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3442         add_ldflags -Wl,--target1-abs,--no-undefined \
3443                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3444                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3445         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3446                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3447                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3448         ;;
3449     osf1)
3450         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3451         FFSERVERLDFLAGS=
3452         ;;
3453     minix)
3454         ;;
3455     plan9)
3456         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3457                      -D_REENTRANT_SOURCE        \
3458                      -D_RESEARCH_SOURCE         \
3459                      -DFD_SETSIZE=96            \
3460                      -DHAVE_SOCK_OPTS
3461         add_compat strtod.o strtod=avpriv_strtod
3462         network_extralibs='-lbsd'
3463         exeobjs=compat/plan9/main.o
3464         disable ffserver
3465         cp_f='cp'
3466         ;;
3467     none)
3468         ;;
3469     *)
3470         die "Unknown OS '$target_os'."
3471         ;;
3472 esac
3473
3474 # determine libc flavour
3475
3476 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3477 if check_cpp_condition features.h "defined __UCLIBC__"; then
3478     libc_type=uclibc
3479     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3480 elif check_cpp_condition features.h "defined __GLIBC__"; then
3481     libc_type=glibc
3482     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3483 # MinGW headers can be installed on Cygwin, so check for newlib first.
3484 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3485     libc_type=newlib
3486     add_cppflags -U__STRICT_ANSI__
3487 elif check_header _mingw.h; then
3488     libc_type=mingw
3489     check_cpp_condition _mingw.h \
3490         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3491             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3492         die "ERROR: MinGW runtime version must be >= 3.15."
3493     add_cppflags -U__STRICT_ANSI__
3494     if check_cpp_condition _mingw.h "defined(__MINGW64_VERSION_MAJOR) && \
3495             __MINGW64_VERSION_MAJOR < 3"; then
3496         add_compat msvcrt/snprintf.o
3497         add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3498     fi
3499 elif check_func_headers stdlib.h _get_doserrno; then
3500     libc_type=msvcrt
3501     add_compat strtod.o strtod=avpriv_strtod
3502     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3503                                  _snprintf=avpriv_snprintf  \
3504                                  vsnprintf=avpriv_vsnprintf
3505 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3506     libc_type=klibc
3507 fi
3508
3509 test -n "$libc_type" && enable $libc_type
3510
3511 # hacks for compiler/libc/os combinations
3512
3513 if enabled_all tms470 glibc; then
3514     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3515     add_cppflags -D__USER_LABEL_PREFIX__=
3516     add_cppflags -D__builtin_memset=memset
3517     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3518     add_cflags   -pds=48    # incompatible redefinition of macro
3519 fi
3520
3521 if enabled_all ccc glibc; then
3522     add_ldflags -Wl,-z,now  # calls to libots crash without this
3523 fi
3524
3525 esc(){
3526     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3527 }
3528
3529 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3530
3531 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
3532
3533 set_default $PATHS_LIST
3534 set_default nm
3535
3536 # we need to build at least one lib type
3537 if ! enabled_any static shared; then
3538     cat <<EOF
3539 At least one library type must be built.
3540 Specify --enable-static to build the static libraries or --enable-shared to
3541 build the shared libraries as well. To only build the shared libraries specify
3542 --disable-static in addition to --enable-shared.
3543 EOF
3544     exit 1;
3545 fi
3546
3547 die_license_disabled() {
3548     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3549 }
3550
3551 die_license_disabled_gpl() {
3552     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3553 }
3554
3555 die_license_disabled gpl libcdio
3556 die_license_disabled gpl libutvideo
3557 die_license_disabled gpl libx264
3558 die_license_disabled gpl libxavs
3559 die_license_disabled gpl libxvid
3560 die_license_disabled gpl x11grab
3561
3562 die_license_disabled nonfree libaacplus
3563 die_license_disabled nonfree libfaac
3564 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
3565 enabled gpl && die_license_disabled_gpl nonfree openssl
3566
3567 die_license_disabled version3 libopencore_amrnb
3568 die_license_disabled version3 libopencore_amrwb
3569 die_license_disabled version3 libvo_aacenc
3570 die_license_disabled version3 libvo_amrwbenc
3571
3572 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3573
3574 disabled optimizations || check_cflags -fomit-frame-pointer
3575
3576 enable_pic() {
3577     enable pic
3578     add_cppflags -DPIC
3579     add_cflags   -fPIC
3580     add_asflags  -fPIC
3581 }
3582
3583 enabled pic && enable_pic
3584
3585 check_cc <<EOF || die "Symbol mangling check failed."
3586 int ff_extern;
3587 EOF
3588 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3589 extern_prefix=${sym%%ff_extern*}
3590
3591 check_cc <<EOF && enable_weak inline_asm
3592 void foo(void) { __asm__ volatile ("" ::); }
3593 EOF
3594
3595 _restrict=
3596 for restrict_keyword in restrict __restrict__ __restrict; do
3597     check_cc <<EOF && _restrict=$restrict_keyword && break
3598 void foo(char * $restrict_keyword p);
3599 EOF
3600 done
3601
3602 check_cc <<EOF && enable attribute_packed
3603 struct { int x; } __attribute__((packed)) x;
3604 EOF
3605
3606 check_cc <<EOF && enable attribute_may_alias
3607 union { int x; } __attribute__((may_alias)) x;
3608 EOF
3609
3610 check_cc <<EOF || die "endian test failed"
3611 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3612 EOF
3613 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3614
3615 if enabled alpha; then
3616
3617     check_cflags -mieee
3618
3619 elif enabled arm; then
3620
3621     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
3622 float func(float a, float b){ return a+b; }
3623 EOF
3624
3625     enabled thumb && check_cflags -mthumb || check_cflags -marm
3626     nogas=die
3627
3628     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3629         enable vfp_args
3630     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3631         case "${cross_prefix:-$cc}" in
3632             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3633             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3634 __asm__ (".eabi_attribute 28, 1");
3635 int main(void) { return 0; }
3636 EOF
3637         esac
3638         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3639     fi
3640
3641     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3642     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3643     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3644     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3645     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3646     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3647
3648     [ $target_os = linux ] ||
3649         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3650             $ARCH_EXT_LIST_ARM
3651
3652     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3653     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3654
3655     enabled_all armv6t2 shared !pic && enable_pic
3656
3657 elif enabled mips; then
3658
3659     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3660     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
3661      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
3662     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
3663      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
3664     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
3665      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
3666     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
3667      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
3668
3669 elif enabled parisc; then
3670
3671     if enabled gcc; then
3672         case $($cc -dumpversion) in
3673             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3674         esac
3675     fi
3676
3677 elif enabled ppc; then
3678
3679     enable local_aligned_8 local_aligned_16
3680
3681     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3682     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3683     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3684     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3685
3686     # AltiVec flags: The FSF version of GCC differs from the Apple version
3687     if enabled altivec; then
3688         nogas=warn
3689         check_cflags -maltivec -mabi=altivec &&
3690         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3691         check_cflags -faltivec
3692
3693         # check if our compiler supports Motorola AltiVec C API
3694         check_cc <<EOF || disable altivec
3695 $inc_altivec_h
3696 int main(void) {
3697     vector signed int v1 = (vector signed int) { 0 };
3698     vector signed int v2 = (vector signed int) { 1 };
3699     v1 = vec_add(v1, v2);
3700     return 0;
3701 }
3702 EOF
3703
3704         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3705     fi
3706
3707 elif enabled sparc; then
3708
3709     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3710
3711 elif enabled x86; then
3712
3713     check_builtin rdtsc    intrin.h   "__rdtsc()"
3714     check_builtin mm_empty mmintrin.h "_mm_empty()"
3715
3716     enable local_aligned_8 local_aligned_16
3717
3718     # check whether EBP is available on x86
3719     # As 'i' is stored on the stack, this program will crash
3720     # if the base pointer is used to access it because the
3721     # base pointer is cleared in the inline assembly code.
3722     check_exec_crash <<EOF && enable ebp_available
3723 volatile int i=0;
3724 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3725 return i;
3726 EOF
3727
3728     # check whether EBX is available on x86
3729     check_inline_asm ebx_available '""::"b"(0)' &&
3730         check_inline_asm ebx_available '"":::"%ebx"'
3731
3732     # check whether xmm clobbers are supported
3733     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3734
3735     # check whether binutils is new enough to compile SSSE3/MMXEXT
3736     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3737     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3738
3739     if ! disabled_any asm mmx yasm; then
3740         if check_cmd $yasmexe --version; then
3741             enabled x86_64 && yasm_extra="-m amd64"
3742             yasm_debug="-g dwarf2"
3743         elif check_cmd nasm -v; then
3744             yasmexe=nasm
3745             yasm_debug="-g -F dwarf"
3746             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3747         fi
3748
3749         YASMFLAGS="-f $objformat $yasm_extra"
3750         enabled pic               && append YASMFLAGS "-DPIC"
3751         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3752         case "$objformat" in
3753             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3754         esac
3755
3756         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
3757             die "yasm not found, use --disable-yasm for a crippled build"
3758         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external
3759         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3760         check_yasm "CPU amdnop" && enable cpunop
3761     fi
3762
3763     case "$cpu" in
3764         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3765             disable fast_clz
3766         ;;
3767     esac
3768
3769 fi
3770
3771 if enabled asm; then
3772     as=${gas:=$as}
3773     check_as <<EOF && enable gnu_as || \
3774         $nogas "GNU assembler not found, install gas-preprocessor"
3775 .macro m n
3776 \n: .int 0
3777 .endm
3778 m x
3779 EOF
3780 fi
3781
3782 check_ldflags -Wl,--as-needed
3783
3784 if check_func dlopen; then
3785     ldl=
3786 elif check_func dlopen -ldl; then
3787     ldl=-ldl
3788 fi
3789
3790 if ! disabled network; then
3791     check_type "sys/types.h sys/socket.h" socklen_t
3792     check_type netdb.h "struct addrinfo"
3793     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3794     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3795     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3796     check_type netinet/in.h "struct sockaddr_in6"
3797     check_type poll.h "struct pollfd"
3798     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3799     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3800     check_type netinet/sctp.h "struct sctp_event_subscribe"
3801     check_func getaddrinfo $network_extralibs
3802     check_func getservbyport $network_extralibs
3803     # Prefer arpa/inet.h over winsock2
3804     if check_header arpa/inet.h ; then
3805         check_func closesocket
3806     elif check_header winsock2.h ; then
3807         check_func_headers winsock2.h closesocket -lws2 &&
3808             network_extralibs="-lws2" ||
3809         { check_func_headers winsock2.h closesocket -lws2_32 &&
3810             network_extralibs="-lws2_32"; }
3811         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3812         check_type ws2tcpip.h socklen_t
3813         check_type ws2tcpip.h "struct addrinfo"
3814         check_type ws2tcpip.h "struct group_source_req"
3815         check_type ws2tcpip.h "struct ip_mreq_source"
3816         check_type ws2tcpip.h "struct ipv6_mreq"
3817         check_type winsock2.h "struct pollfd"
3818         check_type ws2tcpip.h "struct sockaddr_in6"
3819         check_type ws2tcpip.h "struct sockaddr_storage"
3820         check_struct winsock2.h "struct sockaddr" sa_len
3821     else
3822         disable network
3823     fi
3824 fi
3825
3826 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3827 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3828
3829 check_func  access
3830 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
3831 check_func  fcntl
3832 check_func  fork
3833 check_func  gethrtime
3834 check_func  getopt
3835 check_func  getrusage
3836 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3837 check_func  gettimeofday
3838 check_func  inet_aton $network_extralibs
3839 check_func  isatty
3840 check_func  localtime_r
3841 check_func  ${malloc_prefix}memalign            && enable memalign
3842 check_func  mkstemp
3843 check_func  mmap
3844 check_func  mprotect
3845 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3846 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3847 check_func  setrlimit
3848 check_func  strerror_r
3849 check_func  sched_getaffinity
3850 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3851 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3852 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3853 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3854 check_func  sysconf
3855 check_func  sysctl
3856 check_func  usleep
3857 check_func_headers conio.h kbhit
3858 check_func_headers windows.h PeekNamedPipe
3859 check_func_headers io.h setmode
3860 check_func_headers lzo/lzo1x.h lzo1x_999_compress
3861 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3862 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3863 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3864 check_func_headers windows.h GetProcessAffinityMask
3865 check_func_headers windows.h GetProcessTimes
3866 check_func_headers windows.h GetSystemTimeAsFileTime
3867 check_func_headers windows.h MapViewOfFile
3868 check_func_headers windows.h SetConsoleTextAttribute
3869 check_func_headers windows.h Sleep
3870 check_func_headers windows.h VirtualAlloc
3871 check_func_headers glob.h glob
3872
3873 check_header direct.h
3874 check_header dlfcn.h
3875 check_header dxva.h
3876 check_header dxva2api.h -D_WIN32_WINNT=0x0600
3877 check_header io.h
3878 check_header libcrystalhd/libcrystalhd_if.h
3879 check_header malloc.h
3880 check_header poll.h
3881 check_header sys/mman.h
3882 check_header sys/param.h
3883 check_header sys/resource.h
3884 check_header sys/select.h
3885 check_header sys/time.h
3886 check_header termios.h
3887 check_header unistd.h
3888 check_header vdpau/vdpau.h
3889 check_header vdpau/vdpau_x11.h
3890 check_header VideoDecodeAcceleration/VDADecoder.h
3891 check_header windows.h
3892 check_header X11/extensions/XvMClib.h
3893 check_header asm/types.h
3894
3895 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3896 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3897
3898 if ! disabled w32threads && ! enabled pthreads; then
3899     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
3900 fi
3901
3902 # check for some common methods of building with pthread support
3903 # do this before the optional library checks as some of them require pthreads
3904 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
3905     enable pthreads
3906     if check_func pthread_create; then
3907         :
3908     elif check_func pthread_create -pthread; then
3909         add_cflags -pthread
3910         add_extralibs -pthread
3911     elif check_func pthread_create -pthreads; then
3912         add_cflags -pthreads
3913         add_extralibs -pthreads
3914     elif check_func pthread_create -lpthreadGC2; then
3915         add_extralibs -lpthreadGC2
3916     elif ! check_lib pthread.h pthread_create -lpthread; then
3917         disable pthreads
3918     fi
3919 fi
3920
3921 for thread in $THREADS_LIST; do
3922     if enabled $thread; then
3923         test -n "$thread_type" &&
3924             die "ERROR: Only one thread type must be selected." ||
3925             thread_type="$thread"
3926     fi
3927 done
3928
3929 if enabled pthreads; then
3930   check_func pthread_cancel
3931 fi
3932
3933 enabled sync_val_compare_and_swap && enable atomics_gcc
3934 enabled machine_rw_barrier && enabled atomic_cas_ptr && enable atomics_suncc
3935 enabled MemoryBarrier && enable atomics_win32
3936
3937 check_lib math.h sin -lm && LIBM="-lm"
3938 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
3939 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3940
3941 atan2f_args=2
3942 ldexpf_args=2
3943 powf_args=2
3944
3945 for func in $MATH_FUNCS; do
3946     eval check_mathfunc $func \${${func}_args:-1}
3947 done
3948
3949 # these are off by default, so fail if requested and not available
3950 enabled avisynth   && { { check_lib2 "windows.h" LoadLibrary; } ||
3951                         { check_lib2 "dlfcn.h" dlopen -ldl; } ||
3952                         die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
3953 enabled fontconfig && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
3954 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3955 enabled gnutls     && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3956 enabled libiec61883 && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
3957 enabled libaacplus && require  "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
3958 enabled libass     && require_pkg_config libass ass/ass.h ass_library_init
3959 enabled libbluray  && require libbluray libbluray/bluray.h bd_open -lbluray
3960 enabled libcelt    && require libcelt celt/celt.h celt_decode -lcelt0 &&
3961                       { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
3962                         die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
3963 enabled libcaca    && require_pkg_config caca caca.h caca_create_canvas
3964 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3965 enabled libfdk_aac && require  libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3966 flite_libs="-lflite_cmu_time_awb -lflite_cmu_us_awb -lflite_cmu_us_kal -lflite_cmu_us_kal16 -lflite_cmu_us_rms -lflite_cmu_us_slt -lflite_usenglish -lflite_cmulex -lflite"
3967 enabled libflite   && require2 libflite "flite/flite.h" flite_init $flite_libs
3968 enabled libfreetype && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
3969 enabled libgsm     && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
3970                             check_lib "${gsm_hdr}" gsm_create -lgsm && break;
3971                         done || die "ERROR: libgsm not found"; }
3972 enabled libilbc    && require  libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3973 enabled libmodplug && require  libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
3974 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3975 enabled libnut     && require  libnut libnut.h nut_demuxer_init -lnut
3976 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3977 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3978 enabled libopencv  && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
3979 enabled libopenjpeg && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg ||
3980                          check_lib openjpeg.h opj_version -lopenjpeg ||
3981                          die "ERROR: libopenjpeg not found"; }
3982 enabled libopus    && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3983 enabled libpulse && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3984 enabled libquvi    && require_pkg_config libquvi quvi/quvi.h quvi_init
3985 enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3986 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3987 enabled libsoxr    && require  libsoxr soxr.h soxr_create -lsoxr
3988 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
3989 enabled libstagefright_h264  && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
3990     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
3991     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
3992 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3993 enabled libtwolame && require  libtwolame twolame.h twolame_init -ltwolame &&
3994                       { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
3995                         die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
3996 enabled libutvideo    && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
3997 enabled libv4l2    && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
3998 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3999 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4000 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4001 enabled libvpx     && {
4002     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4003                                 die "ERROR: libvpx decoder version must be >=0.9.1"; }
4004     enabled libvpx_vp8_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_enc_init_ver VP8E_SET_MAX_INTRA_BITRATE_PCT" -lvpx ||
4005                                 die "ERROR: libvpx encoder version must be >=0.9.7"; }
4006     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder;  }
4007     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4008 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
4009                       { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4010                         die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4011 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
4012 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
4013 enabled openal     && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4014                         check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4015                         die "ERROR: openal not found"; } &&
4016                       { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4017                         die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4018 enabled opencl     && require2 opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL<