lavfi/afade: use standard options parsing
[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-librtmp         enable RTMP[E] support via librtmp [no]
219   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
220   --enable-libsoxr         enable Include libsoxr resampling [no]
221   --enable-libspeex        enable Speex de/encoding via libspeex [no]
222   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
223   --enable-libtheora       enable Theora encoding via libtheora [no]
224   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
225   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
226   --enable-libv4l2         enable libv4l2/v4l-utils [no]
227   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
228   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
229   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
230                            native implementation exists [no]
231   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
232   --enable-libx264         enable H.264 encoding via x264 [no]
233   --enable-libxavs         enable AVS encoding via xavs [no]
234   --enable-libxvid         enable Xvid encoding via xvidcore,
235                            native MPEG-4/Xvid encoder exists [no]
236   --enable-openal          enable OpenAL 1.1 capture support [no]
237   --enable-opencl          enable OpenCL code
238   --enable-openssl         enable openssl [no]
239   --enable-x11grab         enable X11 grabbing [no]
240   --enable-zlib            enable zlib [autodetect]
241
242 Advanced options (experts only):
243   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
244   --enable-cross-compile   assume a cross-compiler is used
245   --sysroot=PATH           root of cross-build tree
246   --sysinclude=PATH        location of cross-build system headers
247   --target-os=OS           compiler targets OS [$target_os]
248   --target-exec=CMD        command to run executables on target
249   --target-path=DIR        path to view of build directory on target
250   --toolchain=NAME         set tool defaults according to NAME
251   --nm=NM                  use nm tool NM [$nm_default]
252   --ar=AR                  use archive tool AR [$ar_default]
253   --as=AS                  use assembler AS [$as_default]
254   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
255   --cc=CC                  use C compiler CC [$cc_default]
256   --cxx=CXX                use C compiler CXX [$cxx_default]
257   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
258   --ld=LD                  use linker LD [$ld_default]
259   --host-cc=HOSTCC         use host C compiler HOSTCC
260   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
261   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
262   --host-ld=HOSTLD         use host linker HOSTLD
263   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
264   --host-libs=HLIBS        use libs HLIBS when linking for host
265   --host-os=OS             compiler host OS [$target_os]
266   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
267   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
268   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
269   --extra-libs=ELIBS       add ELIBS [$ELIBS]
270   --extra-version=STRING   version string suffix []
271   --optflags=OPTFLAGS      override optimization-related compiler flags
272   --build-suffix=SUFFIX    library name suffix []
273   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
274   --progs-suffix=SUFFIX    program name suffix []
275   --arch=ARCH              select architecture [$arch]
276   --cpu=CPU                select the minimum required CPU (affects
277                            instruction selection, may crash on older CPUs)
278   --enable-pic             build position-independent code
279   --enable-sram            allow use of on-chip SRAM
280   --enable-thumb           compile for Thumb instruction set
281   --disable-symver         disable symbol versioning
282   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
283   --disable-safe-bitstream-reader
284                            disable buffer boundary checking in bitreaders
285                            (faster, but may crash)
286   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
287   --enable-lto             use link-time optimization
288
289 Optimization options (experts only):
290   --disable-asm            disable all assembler optimizations
291   --disable-altivec        disable AltiVec optimizations
292   --disable-amd3dnow       disable 3DNow! optimizations
293   --disable-amd3dnowext    disable 3DNow! extended optimizations
294   --disable-mmx            disable MMX optimizations
295   --disable-mmxext         disable MMXEXT optimizations
296   --disable-sse            disable SSE optimizations
297   --disable-sse2           disable SSE2 optimizations
298   --disable-sse3           disable SSE3 optimizations
299   --disable-ssse3          disable SSSE3 optimizations
300   --disable-sse4           disable SSE4 optimizations
301   --disable-sse42          disable SSE4.2 optimizations
302   --disable-avx            disable AVX optimizations
303   --disable-fma4           disable FMA4 optimizations
304   --disable-armv5te        disable armv5te optimizations
305   --disable-armv6          disable armv6 optimizations
306   --disable-armv6t2        disable armv6t2 optimizations
307   --disable-vfp            disable VFP optimizations
308   --disable-neon           disable NEON optimizations
309   --disable-vis            disable VIS optimizations
310   --disable-inline-asm     disable use of inline assembler
311   --disable-yasm           disable use of yasm assembler
312   --disable-mips32r2       disable MIPS32R2 optimizations
313   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
314   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
315   --disable-mipsfpu        disable floating point MIPS optimizations
316   --disable-fast-unaligned consider unaligned accesses slow
317
318 Developer options (useful when working on FFmpeg itself):
319   --enable-coverage        build with test coverage instrumentation
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                 }
662             }
663         }"
664 }
665
666 print_enabled(){
667     suf=$1
668     shift
669     for v; do
670         enabled $v && printf "%s\n" ${v%$suf};
671     done
672 }
673
674 append(){
675     var=$1
676     shift
677     eval "$var=\"\$$var $*\""
678 }
679
680 prepend(){
681     var=$1
682     shift
683     eval "$var=\"$* \$$var\""
684 }
685
686 add_cppflags(){
687     append CPPFLAGS "$@"
688 }
689
690 add_cflags(){
691     append CFLAGS $($cflags_filter "$@")
692 }
693
694 add_cxxflags(){
695     append CXXFLAGS $($cflags_filter "$@")
696 }
697
698 add_asflags(){
699     append ASFLAGS $($asflags_filter "$@")
700 }
701
702 add_ldflags(){
703     append LDFLAGS $($ldflags_filter "$@")
704 }
705
706 add_extralibs(){
707     prepend extralibs $($ldflags_filter "$@")
708 }
709
710 add_host_cppflags(){
711     append host_cppflags "$@"
712 }
713
714 add_host_cflags(){
715     append host_cflags $($host_cflags_filter "$@")
716 }
717
718 add_host_ldflags(){
719     append host_ldflags $($host_ldflags_filter "$@")
720 }
721
722 add_compat(){
723     append compat_objs $1
724     shift
725     map 'add_cppflags -D$v' "$@"
726 }
727
728 check_cmd(){
729     log "$@"
730     "$@" >> $logfile 2>&1
731 }
732
733 cc_o(){
734     eval printf '%s\\n' $CC_O
735 }
736
737 cc_e(){
738     eval printf '%s\\n' $CC_E
739 }
740
741 check_cc(){
742     log check_cc "$@"
743     cat > $TMPC
744     log_file $TMPC
745     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
746 }
747
748 check_cxx(){
749     log check_cxx "$@"
750     cat > $TMPCPP
751     log_file $TMPCPP
752     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
753 }
754
755 check_cpp(){
756     log check_cpp "$@"
757     cat > $TMPC
758     log_file $TMPC
759     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
760 }
761
762 as_o(){
763     eval printf '%s\\n' $AS_O
764 }
765
766 check_as(){
767     log check_as "$@"
768     cat > $TMPS
769     log_file $TMPS
770     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
771 }
772
773 check_inline_asm(){
774     log check_inline_asm "$@"
775     name="$1"
776     code="$2"
777     shift 2
778     disable $name
779     check_cc "$@" <<EOF && enable $name
780 void foo(void){ __asm__ volatile($code); }
781 EOF
782 }
783
784 check_insn(){
785     log check_insn "$@"
786     check_inline_asm ${1}_inline "\"$2\""
787     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
788 }
789
790 check_yasm(){
791     log check_yasm "$@"
792     echo "$1" > $TMPS
793     log_file $TMPS
794     shift 1
795     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
796 }
797
798 ld_o(){
799     eval printf '%s\\n' $LD_O
800 }
801
802 check_ld(){
803     log check_ld "$@"
804     type=$1
805     shift 1
806     flags=$(filter_out '-l*|*.so' $@)
807     libs=$(filter '-l*|*.so' $@)
808     check_$type $($cflags_filter $flags) || return
809     flags=$($ldflags_filter $flags)
810     libs=$($ldflags_filter $libs)
811     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
812 }
813
814 check_code(){
815     log check_code "$@"
816     check=$1
817     headers=$2
818     code=$3
819     shift 3
820     {
821         for hdr in $headers; do
822             echo "#include <$hdr>"
823         done
824         echo "int main(void) { $code; return 0; }"
825     } | check_$check "$@"
826 }
827
828 check_cppflags(){
829     log check_cppflags "$@"
830     check_cc "$@" <<EOF && append CPPFLAGS "$@"
831 int x;
832 EOF
833 }
834
835 check_cflags(){
836     log check_cflags "$@"
837     set -- $($cflags_filter "$@")
838     check_cc "$@" <<EOF && append CFLAGS "$@"
839 int x;
840 EOF
841 }
842
843 check_cxxflags(){
844     log check_cxxflags "$@"
845     set -- $($cflags_filter "$@")
846     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
847 int x;
848 EOF
849 }
850
851 test_ldflags(){
852     log test_ldflags "$@"
853     check_ld "cc" "$@" <<EOF
854 int main(void){ return 0; }
855 EOF
856 }
857
858 check_ldflags(){
859     log check_ldflags "$@"
860     test_ldflags "$@" && add_ldflags "$@"
861 }
862
863 check_header(){
864     log check_header "$@"
865     header=$1
866     shift
867     disable_safe $header
868     check_cpp "$@" <<EOF && enable_safe $header
869 #include <$header>
870 int x;
871 EOF
872 }
873
874 check_func(){
875     log check_func "$@"
876     func=$1
877     shift
878     disable $func
879     check_ld "cc" "$@" <<EOF && enable $func
880 extern int $func();
881 int main(void){ $func(); }
882 EOF
883 }
884
885 check_mathfunc(){
886     log check_mathfunc "$@"
887     func=$1
888     narg=$2
889     shift 2
890     test $narg = 2 && args="f, g" || args="f"
891     disable $func
892     check_ld "cc" "$@" <<EOF && enable $func
893 #include <math.h>
894 float foo(float f, float g) { return $func($args); }
895 int main(void){ return (int) foo; }
896 EOF
897 }
898
899 check_func_headers(){
900     log check_func_headers "$@"
901     headers=$1
902     funcs=$2
903     shift 2
904     {
905         for hdr in $headers; do
906             echo "#include <$hdr>"
907         done
908         for func in $funcs; do
909             echo "long check_$func(void) { return (long) $func; }"
910         done
911         echo "int main(void) { return 0; }"
912     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
913 }
914
915 check_class_headers_cpp(){
916     log check_class_headers_cpp "$@"
917     headers=$1
918     classes=$2
919     shift 2
920     {
921         for hdr in $headers; do
922             echo "#include <$hdr>"
923         done
924         echo "int main(void) { "
925         i=1
926         for class in $classes; do
927             echo "$class obj$i;"
928             i=$(expr $i + 1)
929         done
930         echo "return 0; }"
931     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
932 }
933
934 check_cpp_condition(){
935     log check_cpp_condition "$@"
936     header=$1
937     condition=$2
938     shift 2
939     check_cpp "$@" <<EOF
940 #include <$header>
941 #if !($condition)
942 #error "unsatisfied condition: $condition"
943 #endif
944 EOF
945 }
946
947 check_lib(){
948     log check_lib "$@"
949     header="$1"
950     func="$2"
951     shift 2
952     check_header $header && check_func $func "$@" && add_extralibs "$@"
953 }
954
955 check_lib2(){
956     log check_lib2 "$@"
957     headers="$1"
958     funcs="$2"
959     shift 2
960     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
961 }
962
963 check_lib_cpp(){
964     log check_lib_cpp "$@"
965     headers="$1"
966     classes="$2"
967     shift 2
968     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
969 }
970
971 check_pkg_config(){
972     log check_pkg_config "$@"
973     pkg="$1"
974     headers="$2"
975     funcs="$3"
976     shift 3
977     $pkg_config --exists $pkg 2>/dev/null || return
978     pkg_cflags=$($pkg_config --cflags $pkg)
979     pkg_libs=$($pkg_config --libs $pkg)
980     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
981         set_safe ${pkg}_cflags $pkg_cflags   &&
982         set_safe ${pkg}_libs   $pkg_libs
983 }
984
985 check_exec(){
986     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
987 }
988
989 check_exec_crash(){
990     code=$(cat)
991
992     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
993     # are safe but may not be available everywhere.  Thus we use
994     # raise(SIGTERM) instead.  The check is run in a subshell so we
995     # can redirect the "Terminated" message from the shell.  SIGBUS
996     # is not defined by standard C so it is used conditionally.
997
998     (check_exec "$@") >> $logfile 2>&1 <<EOF
999 #include <signal.h>
1000 static void sighandler(int sig){
1001     raise(SIGTERM);
1002 }
1003 int func(void){
1004     $code
1005 }
1006 int (*func_ptr)(void) = func;
1007 int main(void){
1008     signal(SIGILL, sighandler);
1009     signal(SIGFPE, sighandler);
1010     signal(SIGSEGV, sighandler);
1011 #ifdef SIGBUS
1012     signal(SIGBUS, sighandler);
1013 #endif
1014     return func_ptr();
1015 }
1016 EOF
1017 }
1018
1019 check_type(){
1020     log check_type "$@"
1021     headers=$1
1022     type=$2
1023     shift 2
1024     disable_safe "$type"
1025     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1026 }
1027
1028 check_struct(){
1029     log check_struct "$@"
1030     headers=$1
1031     struct=$2
1032     member=$3
1033     shift 3
1034     disable_safe "${struct}_${member}"
1035     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1036         enable_safe "${struct}_${member}"
1037 }
1038
1039 check_builtin(){
1040     log check_builtin "$@"
1041     name=$1
1042     headers=$2
1043     builtin=$3
1044     shift 3
1045     disable "$name"
1046     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1047 }
1048
1049 require(){
1050     name="$1"
1051     header="$2"
1052     func="$3"
1053     shift 3
1054     check_lib $header $func "$@" || die "ERROR: $name not found"
1055 }
1056
1057 require2(){
1058     name="$1"
1059     headers="$2"
1060     func="$3"
1061     shift 3
1062     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1063 }
1064
1065 require_cpp(){
1066     name="$1"
1067     headers="$2"
1068     classes="$3"
1069     shift 3
1070     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1071 }
1072
1073 require_pkg_config(){
1074     pkg="$1"
1075     check_pkg_config "$@" || die "ERROR: $pkg not found"
1076     add_cflags    $(get_safe ${pkg}_cflags)
1077     add_extralibs $(get_safe ${pkg}_libs)
1078 }
1079
1080 hostcc_o(){
1081     eval printf '%s\\n' $HOSTCC_O
1082 }
1083
1084 check_host_cc(){
1085     log check_host_cc "$@"
1086     cat > $TMPC
1087     log_file $TMPC
1088     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1089 }
1090
1091 check_host_cppflags(){
1092     log check_host_cppflags "$@"
1093     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1094 int x;
1095 EOF
1096 }
1097
1098 check_host_cflags(){
1099     log check_host_cflags "$@"
1100     set -- $($host_cflags_filter "$@")
1101     check_host_cc "$@" <<EOF && append host_cflags "$@"
1102 int x;
1103 EOF
1104 }
1105
1106 apply(){
1107     file=$1
1108     shift
1109     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1110 }
1111
1112 cp_if_changed(){
1113     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1114     mkdir -p "$(dirname $2)"
1115     $cp_f "$1" "$2"
1116 }
1117
1118 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1119 # system-dependent things.
1120
1121 COMPONENT_LIST="
1122     bsfs
1123     decoders
1124     demuxers
1125     encoders
1126     filters
1127     hwaccels
1128     indevs
1129     muxers
1130     outdevs
1131     parsers
1132     protocols
1133 "
1134
1135 EXTERNAL_LIBRARY_LIST="
1136     avisynth
1137     bzlib
1138     crystalhd
1139     fontconfig
1140     frei0r
1141     gnutls
1142     iconv
1143     libaacplus
1144     libass
1145     libbluray
1146     libcaca
1147     libcdio
1148     libcelt
1149     libdc1394
1150     libfaac
1151     libfdk_aac
1152     libflite
1153     libfreetype
1154     libgsm
1155     libiec61883
1156     libilbc
1157     libmodplug
1158     libmp3lame
1159     libnut
1160     libopencore_amrnb
1161     libopencore_amrwb
1162     libopencv
1163     libopenjpeg
1164     libopus
1165     libpulse
1166     librtmp
1167     libschroedinger
1168     libsoxr
1169     libspeex
1170     libstagefright_h264
1171     libtheora
1172     libtwolame
1173     libutvideo
1174     libv4l2
1175     libvo_aacenc
1176     libvo_amrwbenc
1177     libvorbis
1178     libvpx
1179     libx264
1180     libxavs
1181     libxvid
1182     openal
1183     opencl
1184     openssl
1185     x11grab
1186     zlib
1187 "
1188
1189 DOCUMENT_LIST="
1190     doc
1191     htmlpages
1192     manpages
1193     podpages
1194     txtpages
1195 "
1196
1197 HWACCEL_LIST="
1198     dxva2
1199     vaapi
1200     vda
1201     vdpau
1202 "
1203
1204 LIBRARY_LIST="
1205     avcodec
1206     avdevice
1207     avfilter
1208     avformat
1209     avresample
1210     avutil
1211     postproc
1212     swresample
1213     swscale
1214 "
1215
1216 PROGRAM_LIST="
1217     ffplay
1218     ffprobe
1219     ffserver
1220     ffmpeg
1221 "
1222
1223 CONFIG_LIST="
1224     $COMPONENT_LIST
1225     $DOCUMENT_LIST
1226     $EXTERNAL_LIBRARY_LIST
1227     $HWACCEL_LIST
1228     $LIBRARY_LIST
1229     $PROGRAM_LIST
1230     dct
1231     dwt
1232     error_resilience
1233     fast_unaligned
1234     fft
1235     ftrapv
1236     gpl
1237     gray
1238     hardcoded_tables
1239     incompatible_fork_abi
1240     lsp
1241     lzo
1242     mdct
1243     memalign_hack
1244     memory_poisoning
1245     network
1246     nonfree
1247     pic
1248     rdft
1249     runtime_cpudetect
1250     safe_bitstream_reader
1251     shared
1252     small
1253     sram
1254     static
1255     swscale_alpha
1256     thumb
1257     version3
1258     xmm_clobber_test
1259 "
1260
1261 THREADS_LIST='
1262     pthreads
1263     w32threads
1264     os2threads
1265 '
1266
1267 ATOMICS_LIST='
1268     atomics_gcc
1269     atomics_win32
1270     atomics_suncc
1271 '
1272
1273 ARCH_LIST='
1274     aarch64
1275     alpha
1276     arm
1277     avr32
1278     avr32_ap
1279     avr32_uc
1280     bfin
1281     ia64
1282     m68k
1283     mips
1284     mips64
1285     parisc
1286     ppc
1287     ppc64
1288     s390
1289     sh4
1290     sparc
1291     sparc64
1292     tilegx
1293     tilepro
1294     tomi
1295     x86
1296     x86_32
1297     x86_64
1298 '
1299
1300 ARCH_EXT_LIST_ARM='
1301     armv5te
1302     armv6
1303     armv6t2
1304     neon
1305     vfp
1306     vfpv3
1307 '
1308
1309 ARCH_EXT_LIST_X86='
1310     amd3dnow
1311     amd3dnowext
1312     avx
1313     fma4
1314     mmx
1315     mmxext
1316     sse
1317     sse2
1318     sse3
1319     sse4
1320     sse42
1321     ssse3
1322 '
1323
1324 ARCH_EXT_LIST="
1325     $ARCH_EXT_LIST_ARM
1326     $ARCH_EXT_LIST_X86
1327     altivec
1328     ppc4xx
1329     vis
1330     mipsfpu
1331     mips32r2
1332     mipsdspr1
1333     mipsdspr2
1334 "
1335
1336 HAVE_LIST_CMDLINE='
1337     inline_asm
1338     symver
1339     yasm
1340 '
1341
1342 HAVE_LIST_PUB='
1343     bigendian
1344     fast_unaligned
1345     incompatible_fork_abi
1346 '
1347
1348 MATH_FUNCS="
1349     atanf
1350     atan2f
1351     cbrt
1352     cbrtf
1353     cosf
1354     exp2
1355     exp2f
1356     expf
1357     isinf
1358     isnan
1359     ldexpf
1360     llrint
1361     llrintf
1362     log2
1363     log2f
1364     log10f
1365     lrint
1366     lrintf
1367     powf
1368     rint
1369     round
1370     roundf
1371     sinf
1372     trunc
1373     truncf
1374 "
1375
1376 HAVE_LIST="
1377     $ARCH_EXT_LIST
1378     $(add_suffix _external $ARCH_EXT_LIST)
1379     $(add_suffix _inline   $ARCH_EXT_LIST)
1380     $HAVE_LIST_CMDLINE
1381     $HAVE_LIST_PUB
1382     $THREADS_LIST
1383     $ATOMICS_LIST
1384     $MATH_FUNCS
1385     access
1386     aligned_malloc
1387     aligned_stack
1388     alsa_asoundlib_h
1389     altivec_h
1390     arpa_inet_h
1391     asm_mod_q
1392     asm_mod_y
1393     asm_types_h
1394     atomic_cas_ptr
1395     atomics_native
1396     attribute_may_alias
1397     attribute_packed
1398     cdio_paranoia_h
1399     cdio_paranoia_paranoia_h
1400     clock_gettime
1401     closesocket
1402     cmov
1403     CommandLineToArgvW
1404     cpunop
1405     CryptGenRandom
1406     dcbzl
1407     dev_bktr_ioctl_bt848_h
1408     dev_bktr_ioctl_meteor_h
1409     dev_ic_bt8xx_h
1410     dev_video_bktr_ioctl_bt848_h
1411     dev_video_meteor_ioctl_meteor_h
1412     direct_h
1413     dlfcn_h
1414     dlopen
1415     dos_paths
1416     dxva_h
1417     ebp_available
1418     ebx_available
1419     fast_64bit
1420     fast_clz
1421     fast_cmov
1422     fcntl
1423     fork
1424     getaddrinfo
1425     gethrtime
1426     getopt
1427     GetProcessAffinityMask
1428     GetProcessMemoryInfo
1429     GetProcessTimes
1430     GetSystemTimeAsFileTime
1431     getrusage
1432     getservbyport
1433     gettimeofday
1434     glob
1435     gnu_as
1436     gsm_h
1437     ibm_asm
1438     inet_aton
1439     io_h
1440     isatty
1441     jack_port_get_latency_range
1442     kbhit
1443     ldbrx
1444     libdc1394_1
1445     libdc1394_2
1446     local_aligned_16
1447     local_aligned_8
1448     localtime_r
1449     loongson
1450     lzo1x_999_compress
1451     machine_ioctl_bt848_h
1452     machine_ioctl_meteor_h
1453     machine_rw_barrier
1454     makeinfo
1455     malloc_h
1456     MapViewOfFile
1457     memalign
1458     MemoryBarrier
1459     mkstemp
1460     mm_empty
1461     mmap
1462     mprotect
1463     msvcrt
1464     nanosleep
1465     openjpeg_1_5_openjpeg_h
1466     PeekNamedPipe
1467     perl
1468     pod2man
1469     poll_h
1470     posix_memalign
1471     pthread_cancel
1472     rdtsc
1473     rsync_contimeout
1474     sched_getaffinity
1475     sdl
1476     SetConsoleTextAttribute
1477     setmode
1478     setrlimit
1479     Sleep
1480     sndio_h
1481     socklen_t
1482     soundcard_h
1483     strerror_r
1484     struct_addrinfo
1485     struct_group_source_req
1486     struct_ip_mreq_source
1487     struct_ipv6_mreq
1488     struct_pollfd
1489     struct_rusage_ru_maxrss
1490     struct_sctp_event_subscribe
1491     struct_sockaddr_in6
1492     struct_sockaddr_sa_len
1493     struct_sockaddr_storage
1494     struct_v4l2_frmivalenum_discrete
1495     symver_asm_label
1496     symver_gnu_asm
1497     sync_val_compare_and_swap
1498     sysconf
1499     sysctl
1500     sys_mman_h
1501     sys_param_h
1502     sys_resource_h
1503     sys_select_h
1504     sys_soundcard_h
1505     sys_time_h
1506     sys_videoio_h
1507     termios_h
1508     texi2html
1509     threads
1510     unistd_h
1511     usleep
1512     vfp_args
1513     VirtualAlloc
1514     windows_h
1515     winsock2_h
1516     xform_asm
1517     xmm_clobbers
1518 "
1519
1520 # options emitted with CONFIG_ prefix but not available on the command line
1521 CONFIG_EXTRA="
1522     aandcttables
1523     ac3dsp
1524     audio_frame_queue
1525     dsputil
1526     frame_thread_encoder
1527     gcrypt
1528     golomb
1529     gplv3
1530     h264chroma
1531     h264dsp
1532     h264pred
1533     h264qpel
1534     hpeldsp
1535     huffman
1536     lgplv3
1537     lpc
1538     mpegaudio
1539     mpegaudiodsp
1540     mpegvideo
1541     mpegvideoenc
1542     nettle
1543     rangecoder
1544     rtpdec
1545     rtpenc_chain
1546     sinewin
1547     videodsp
1548     vp3dsp
1549 "
1550
1551 CMDLINE_SELECT="
1552     $ARCH_EXT_LIST
1553     $CONFIG_LIST
1554     $HAVE_LIST_CMDLINE
1555     $THREADS_LIST
1556     asm
1557     coverage
1558     cross_compile
1559     debug
1560     extra_warnings
1561     logging
1562     lto
1563     optimizations
1564     stripping
1565 "
1566
1567 PATHS_LIST='
1568     bindir
1569     datadir
1570     incdir
1571     libdir
1572     mandir
1573     prefix
1574     shlibdir
1575 '
1576
1577 CMDLINE_SET="
1578     $PATHS_LIST
1579     ar
1580     arch
1581     as
1582     assert_level
1583     build_suffix
1584     cc
1585     cpu
1586     cross_prefix
1587     cxx
1588     dep_cc
1589     extra_version
1590     host_cc
1591     host_cflags
1592     host_ld
1593     host_ldflags
1594     host_libs
1595     host_os
1596     install
1597     ld
1598     logfile
1599     malloc_prefix
1600     nm
1601     optflags
1602     pkg_config
1603     progs_suffix
1604     random_seed
1605     samples
1606     strip
1607     sysinclude
1608     sysroot
1609     target_exec
1610     target_os
1611     target_path
1612     toolchain
1613     valgrind
1614     yasmexe
1615 "
1616
1617 CMDLINE_APPEND="
1618     extra_cflags
1619     extra_cxxflags
1620     host_cppflags
1621 "
1622
1623 # code dependency declarations
1624
1625 # architecture extensions
1626
1627 armv5te_deps="arm"
1628 armv6_deps="arm"
1629 armv6t2_deps="arm"
1630 neon_deps="arm"
1631 vfp_deps="arm"
1632 vfpv3_deps="vfp"
1633
1634 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1635
1636 mipsfpu_deps="mips"
1637 mips32r2_deps="mips"
1638 mipsdspr1_deps="mips"
1639 mipsdspr2_deps="mips"
1640
1641 altivec_deps="ppc"
1642 ppc4xx_deps="ppc"
1643
1644 vis_deps="sparc"
1645
1646 x86_64_suggest="cmov fast_cmov"
1647
1648 amd3dnow_deps="mmx"
1649 amd3dnowext_deps="amd3dnow"
1650 mmx_deps="x86"
1651 mmxext_deps="mmx"
1652 sse_deps="mmxext"
1653 sse2_deps="sse"
1654 sse3_deps="sse2"
1655 ssse3_deps="sse3"
1656 sse4_deps="ssse3"
1657 sse42_deps="sse4"
1658 avx_deps="sse42"
1659 fma4_deps="avx"
1660
1661 mmx_external_deps="yasm"
1662 mmx_inline_deps="inline_asm"
1663 mmx_suggest="mmx_external mmx_inline"
1664
1665 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1666     eval dep=\$${ext}_deps
1667     eval ${ext}_external_deps='"${dep}_external"'
1668     eval ${ext}_inline_deps='"${dep}_inline"'
1669     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1670 done
1671
1672 aligned_stack_if_any="ppc x86"
1673 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1674 fast_clz_if_any="alpha avr32 mips ppc x86"
1675 fast_unaligned_if_any="ppc x86"
1676
1677 inline_asm_deps="!tms470"
1678 need_memalign="altivec neon sse"
1679
1680 symver_if_any="symver_asm_label symver_gnu_asm"
1681
1682 log2_deps="!msvcrt"
1683
1684 # subsystems
1685 dct_select="rdft"
1686 error_resilience_select="dsputil"
1687 frame_thread_encoder_deps="encoders threads"
1688 mdct_select="fft"
1689 rdft_select="fft"
1690 mpegaudio_select="mpegaudiodsp"
1691 mpegaudiodsp_select="dct"
1692 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1693 mpegvideoenc_select="mpegvideo"
1694
1695 # decoders / encoders
1696 aac_decoder_select="mdct sinewin"
1697 aac_encoder_select="audio_frame_queue mdct sinewin"
1698 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1699 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1700 ac3_encoder_select="mdct ac3dsp dsputil"
1701 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1702 alac_encoder_select="lpc"
1703 als_decoder_select="dsputil"
1704 amrnb_decoder_select="lsp"
1705 amrwb_decoder_select="lsp"
1706 amv_encoder_select="aandcttables"
1707 ape_decoder_select="dsputil"
1708 asv_decoder_select="dsputil"
1709 atrac1_decoder_select="mdct sinewin"
1710 atrac3_decoder_select="mdct"
1711 bink_decoder_select="dsputil hpeldsp"
1712 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1713 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1714 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1715 cllc_decoder_select="dsputil"
1716 comfortnoise_encoder_select="lpc"
1717 cook_decoder_select="dsputil mdct sinewin"
1718 cscd_decoder_select="lzo"
1719 cscd_decoder_suggest="zlib"
1720 dca_decoder_select="mdct"
1721 dirac_decoder_select="dsputil dwt golomb videodsp"
1722 dnxhd_decoder_select="dsputil"
1723 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1724 dvvideo_decoder_select="dsputil"
1725 dxa_decoder_select="zlib"
1726 eac3_decoder_select="ac3_decoder"
1727 eac3_encoder_select="ac3_encoder"
1728 eamad_decoder_select="aandcttables dsputil mpegvideo"
1729 eatgq_decoder_select="aandcttables"
1730 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1731 exr_decoder_select="zlib"
1732 ffv1_decoder_select="dsputil golomb rangecoder"
1733 ffv1_encoder_select="rangecoder"
1734 ffvhuff_encoder_select="huffman"
1735 flac_decoder_select="golomb"
1736 flac_encoder_select="dsputil golomb lpc"
1737 flashsv_decoder_select="zlib"
1738 flashsv_encoder_select="zlib"
1739 flashsv2_encoder_select="zlib"
1740 flashsv2_decoder_select="zlib"
1741 flv_decoder_select="h263_decoder"
1742 flv_encoder_select="h263_encoder"
1743 fourxm_decoder_select="dsputil"
1744 fraps_decoder_select="dsputil huffman"
1745 g729_decoder_select="dsputil"
1746 h261_decoder_select="error_resilience mpegvideo"
1747 h261_encoder_select="aandcttables mpegvideoenc"
1748 h263_decoder_select="error_resilience h263_parser mpegvideo"
1749 h263_encoder_select="aandcttables mpegvideoenc"
1750 h263i_decoder_select="h263_decoder"
1751 h263p_encoder_select="h263_encoder"
1752 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1753 h264_decoder_suggest="error_resilience"
1754 huffyuv_decoder_select="dsputil"
1755 huffyuv_encoder_select="huffman"
1756 iac_decoder_select="fft mdct sinewin"
1757 imc_decoder_select="dsputil fft mdct sinewin"
1758 indeo3_decoder_select="hpeldsp"
1759 interplay_video_decoder_select="hpeldsp"
1760 jpegls_decoder_select="golomb"
1761 jpegls_encoder_select="golomb"
1762 jv_decoder_select="dsputil"
1763 lagarith_decoder_select="dsputil"
1764 ljpeg_encoder_select="aandcttables mpegvideoenc"
1765 loco_decoder_select="golomb"
1766 mdec_decoder_select="dsputil error_resilience mpegvideo"
1767 mimic_decoder_select="dsputil hpeldsp"
1768 mjpeg_decoder_select="dsputil hpeldsp"
1769 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1770 mlp_decoder_select="dsputil mlp_parser"
1771 motionpixels_decoder_select="dsputil"
1772 mp1_decoder_select="mpegaudio"
1773 mp1float_decoder_select="mpegaudio"
1774 mp2_decoder_select="mpegaudio"
1775 mp2float_decoder_select="mpegaudio"
1776 mp3_decoder_select="mpegaudio"
1777 mp3adu_decoder_select="mpegaudio"
1778 mp3adufloat_decoder_select="mpegaudio"
1779 mp3float_decoder_select="mpegaudio"
1780 mp3on4_decoder_select="mpegaudio"
1781 mp3on4float_decoder_select="mpegaudio"
1782 mpc7_decoder_select="dsputil mpegaudiodsp"
1783 mpc8_decoder_select="dsputil mpegaudiodsp"
1784 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1785 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1786 mpeg1video_decoder_select="error_resilience mpegvideo"
1787 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1788 mpeg2video_decoder_select="error_resilience mpegvideo"
1789 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1790 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1791 mpeg4_encoder_select="h263_encoder"
1792 msmpeg4v1_decoder_select="h263_decoder"
1793 msmpeg4v2_decoder_select="h263_decoder"
1794 msmpeg4v2_encoder_select="h263_encoder"
1795 msmpeg4v3_decoder_select="h263_decoder"
1796 msmpeg4v3_encoder_select="h263_encoder"
1797 mss2_decoder_select="error_resilience vc1_decoder"
1798 nellymoser_decoder_select="mdct sinewin"
1799 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1800 nuv_decoder_select="dsputil lzo"
1801 png_decoder_select="zlib"
1802 png_encoder_select="dsputil zlib"
1803 prores_decoder_select="dsputil"
1804 qcelp_decoder_select="lsp"
1805 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1806 ra_144_encoder_select="audio_frame_queue lpc"
1807 ralf_decoder_select="golomb"
1808 rtjpeg_decoder_select="dsputil"
1809 rv10_decoder_select="error_resilience h263_decoder"
1810 rv10_encoder_select="h263_encoder"
1811 rv20_decoder_select="error_resilience h263_decoder"
1812 rv20_encoder_select="h263_encoder"
1813 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1814 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1815 shorten_decoder_select="golomb"
1816 sipr_decoder_select="lsp"
1817 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
1818 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
1819 sonic_decoder_select="golomb"
1820 sonic_encoder_select="golomb"
1821 sonic_ls_encoder_select="golomb"
1822 svq1_decoder_select="hpeldsp"
1823 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1824 svq3_decoder_select="dsputil golomb h264chroma h264dsp h264pred h264qpel mpegvideo videodsp"
1825 svq3_decoder_suggest="error_resilience zlib"
1826 tak_decoder_select="dsputil"
1827 theora_decoder_select="vp3_decoder"
1828 tiff_decoder_suggest="zlib"
1829 tiff_encoder_suggest="zlib"
1830 truehd_decoder_select="mlp_parser"
1831 truemotion2_decoder_select="dsputil"
1832 tscc_decoder_select="zlib"
1833 twinvq_decoder_select="mdct lsp sinewin"
1834 utvideo_decoder_select="dsputil"
1835 utvideo_encoder_select="huffman"
1836 vble_decoder_select="dsputil"
1837 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1838 vc1image_decoder_select="vc1_decoder"
1839 vorbis_decoder_select="mdct"
1840 vorbis_encoder_select="mdct"
1841 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1842 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1843 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1844 vp6a_decoder_select="vp6_decoder"
1845 vp6f_decoder_select="vp6_decoder"
1846 vp8_decoder_select="h264pred videodsp"
1847 wmapro_decoder_select="mdct sinewin"
1848 wmav1_decoder_select="mdct sinewin"
1849 wmav1_encoder_select="mdct sinewin"
1850 wmav2_decoder_select="mdct sinewin"
1851 wmav2_encoder_select="mdct sinewin"
1852 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1853 wmv1_decoder_select="h263_decoder"
1854 wmv1_encoder_select="h263_encoder"
1855 wmv2_decoder_select="h263_decoder videodsp"
1856 wmv2_encoder_select="h263_encoder"
1857 wmv3_decoder_select="vc1_decoder"
1858 wmv3image_decoder_select="wmv3_decoder"
1859 zerocodec_decoder_select="zlib"
1860 zlib_decoder_select="zlib"
1861 zlib_encoder_select="zlib"
1862 zmbv_decoder_select="zlib"
1863 zmbv_encoder_select="zlib"
1864
1865 # hardware accelerators
1866 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1867 dxva2_deps="dxva2api_h"
1868 vaapi_deps="va_va_h"
1869 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1870 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1871 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1872
1873 h263_vaapi_hwaccel_deps="vaapi"
1874 h263_vaapi_hwaccel_select="h263_decoder"
1875 h263_vdpau_hwaccel_deps="vdpau"
1876 h263_vdpau_hwaccel_select="h263_decoder"
1877 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1878 h264_dxva2_hwaccel_deps="dxva2"
1879 h264_dxva2_hwaccel_select="h264_decoder"
1880 h264_vaapi_hwaccel_deps="vaapi"
1881 h264_vaapi_hwaccel_select="h264_decoder"
1882 h264_vda_decoder_deps="vda"
1883 h264_vda_decoder_select="h264_decoder"
1884 h264_vda_hwaccel_deps="vda"
1885 h264_vda_hwaccel_select="h264_decoder"
1886 h264_vdpau_decoder_deps="vdpau"
1887 h264_vdpau_decoder_select="h264_decoder"
1888 h264_vdpau_hwaccel_deps="vdpau"
1889 h264_vdpau_hwaccel_select="h264_decoder"
1890 mpeg_vdpau_decoder_deps="vdpau"
1891 mpeg_vdpau_decoder_select="mpeg2video_decoder"
1892 mpeg1_vdpau_decoder_deps="vdpau"
1893 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
1894 mpeg1_vdpau_hwaccel_deps="vdpau"
1895 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1896 mpeg2_crystalhd_decoder_select="crystalhd"
1897 mpeg2_dxva2_hwaccel_deps="dxva2"
1898 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1899 mpeg2_vaapi_hwaccel_deps="vaapi"
1900 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1901 mpeg2_vdpau_hwaccel_deps="vdpau"
1902 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1903 mpeg4_crystalhd_decoder_select="crystalhd"
1904 mpeg4_vaapi_hwaccel_deps="vaapi"
1905 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1906 mpeg4_vdpau_decoder_deps="vdpau"
1907 mpeg4_vdpau_decoder_select="mpeg4_decoder"
1908 mpeg4_vdpau_hwaccel_deps="vdpau"
1909 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1910 msmpeg4_crystalhd_decoder_select="crystalhd"
1911 vc1_crystalhd_decoder_select="crystalhd"
1912 vc1_dxva2_hwaccel_deps="dxva2"
1913 vc1_dxva2_hwaccel_select="vc1_decoder"
1914 vc1_vaapi_hwaccel_deps="vaapi"
1915 vc1_vaapi_hwaccel_select="vc1_decoder"
1916 vc1_vdpau_decoder_deps="vdpau"
1917 vc1_vdpau_decoder_select="vc1_decoder"
1918 vc1_vdpau_hwaccel_deps="vdpau"
1919 vc1_vdpau_hwaccel_select="vc1_decoder"
1920 wmv3_crystalhd_decoder_select="crystalhd"
1921 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1922 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1923 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1924 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1925
1926 # parsers
1927 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1928 mpeg4video_parser_select="error_resilience mpegvideo"
1929 mpegvideo_parser_select="error_resilience mpegvideo"
1930 vc1_parser_select="mpegvideo"
1931
1932 # external libraries
1933 libaacplus_encoder_deps="libaacplus"
1934 libcelt_decoder_deps="libcelt"
1935 libfaac_encoder_deps="libfaac"
1936 libfaac_encoder_select="audio_frame_queue"
1937 libfdk_aac_encoder_deps="libfdk_aac"
1938 libfdk_aac_encoder_select="audio_frame_queue"
1939 libgsm_decoder_deps="libgsm"
1940 libgsm_encoder_deps="libgsm"
1941 libgsm_ms_decoder_deps="libgsm"
1942 libgsm_ms_encoder_deps="libgsm"
1943 libilbc_decoder_deps="libilbc"
1944 libilbc_encoder_deps="libilbc"
1945 libmodplug_demuxer_deps="libmodplug"
1946 libmp3lame_encoder_deps="libmp3lame"
1947 libmp3lame_encoder_select="audio_frame_queue"
1948 libopencore_amrnb_decoder_deps="libopencore_amrnb"
1949 libopencore_amrnb_encoder_deps="libopencore_amrnb"
1950 libopencore_amrnb_encoder_select="audio_frame_queue"
1951 libopencore_amrwb_decoder_deps="libopencore_amrwb"
1952 libopenjpeg_decoder_deps="libopenjpeg"
1953 libopenjpeg_encoder_deps="libopenjpeg"
1954 libopus_decoder_deps="libopus"
1955 libopus_encoder_deps="libopus"
1956 libopus_encoder_select="audio_frame_queue"
1957 libschroedinger_decoder_deps="libschroedinger"
1958 libschroedinger_encoder_deps="libschroedinger"
1959 libspeex_decoder_deps="libspeex"
1960 libspeex_encoder_deps="libspeex"
1961 libspeex_encoder_select="audio_frame_queue"
1962 libstagefright_h264_decoder_deps="libstagefright_h264"
1963 libtheora_encoder_deps="libtheora"
1964 libtwolame_encoder_deps="libtwolame"
1965 libvo_aacenc_encoder_deps="libvo_aacenc"
1966 libvo_aacenc_encoder_select="audio_frame_queue"
1967 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
1968 libvorbis_decoder_deps="libvorbis"
1969 libvorbis_encoder_deps="libvorbis"
1970 libvorbis_encoder_select="audio_frame_queue"
1971 libvpx_vp8_decoder_deps="libvpx"
1972 libvpx_vp8_encoder_deps="libvpx"
1973 libvpx_vp9_decoder_deps="libvpx"
1974 libvpx_vp9_encoder_deps="libvpx"
1975 libx264_encoder_deps="libx264"
1976 libx264rgb_encoder_deps="libx264"
1977 libxavs_encoder_deps="libxavs"
1978 libxvid_encoder_deps="libxvid"
1979 libutvideo_decoder_deps="libutvideo"
1980 libutvideo_encoder_deps="libutvideo"
1981
1982 # demuxers / muxers
1983 ac3_demuxer_select="ac3_parser"
1984 asf_stream_muxer_select="asf_muxer"
1985 avisynth_demuxer_deps="avisynth"
1986 dirac_demuxer_select="dirac_parser"
1987 dts_demuxer_select="dca_parser"
1988 dtshd_demuxer_select="dca_parser"
1989 eac3_demuxer_select="ac3_parser"
1990 f4v_muxer_select="mov_muxer"
1991 flac_demuxer_select="flac_parser"
1992 ipod_muxer_select="mov_muxer"
1993 ismv_muxer_select="mov_muxer"
1994 libnut_demuxer_deps="libnut"
1995 libnut_muxer_deps="libnut"
1996 matroska_audio_muxer_select="matroska_muxer"
1997 matroska_demuxer_suggest="bzlib lzo zlib"
1998 mov_demuxer_suggest="zlib"
1999 mov_muxer_select="rtpenc_chain"
2000 mp3_demuxer_select="mpegaudio_parser"
2001 mp4_muxer_select="mov_muxer"
2002 mpegts_muxer_select="adts_muxer latm_muxer"
2003 mpegtsraw_demuxer_select="mpegts_demuxer"
2004 mxf_d10_muxer_select="mxf_muxer"
2005 ogg_demuxer_select="golomb"
2006 psp_muxer_select="mov_muxer"
2007 rtp_demuxer_select="sdp_demuxer"
2008 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2009 rtsp_demuxer_select="http_protocol rtpdec"
2010 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2011 sap_demuxer_select="sdp_demuxer"
2012 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2013 sdp_demuxer_select="rtpdec"
2014 smoothstreaming_muxer_select="ismv_muxer"
2015 spdif_muxer_select="aac_parser"
2016 tak_demuxer_select="tak_parser"
2017 tg2_muxer_select="mov_muxer"
2018 tgp_muxer_select="mov_muxer"
2019 vobsub_demuxer_select="mpegps_demuxer"
2020 w64_demuxer_deps="wav_demuxer"
2021 w64_muxer_deps="wav_muxer"
2022
2023 # indevs / outdevs
2024 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2025 alsa_outdev_deps="alsa_asoundlib_h"
2026 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2027 caca_outdev_deps="libcaca"
2028 dshow_indev_deps="IBaseFilter"
2029 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2030 dv1394_indev_deps="dv1394 dv_demuxer"
2031 fbdev_indev_deps="linux_fb_h"
2032 iec61883_indev_deps="libiec61883"
2033 jack_indev_deps="jack_jack_h sem_timedwait"
2034 lavfi_indev_deps="avfilter"
2035 libcdio_indev_deps="libcdio"
2036 libdc1394_indev_deps="libdc1394"
2037 libv4l2_indev_deps="libv4l2"
2038 openal_indev_deps="openal"
2039 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2040 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2041 pulse_indev_deps="libpulse"
2042 sdl_outdev_deps="sdl"
2043 sndio_indev_deps="sndio_h"
2044 sndio_outdev_deps="sndio_h"
2045 v4l_indev_deps="linux_videodev_h"
2046 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2047 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2048 vfwcap_indev_extralibs="-lavicap32"
2049 x11grab_indev_deps="x11grab"
2050
2051 # protocols
2052 bluray_protocol_deps="libbluray"
2053 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2054 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2055 ffrtmpcrypt_protocol_select="tcp_protocol"
2056 ffrtmphttp_protocol_deps="!librtmp_protocol"
2057 ffrtmphttp_protocol_select="http_protocol"
2058 gopher_protocol_select="network"
2059 httpproxy_protocol_select="tcp_protocol"
2060 http_protocol_select="tcp_protocol"
2061 https_protocol_select="tls_protocol"
2062 librtmp_protocol_deps="librtmp"
2063 librtmpe_protocol_deps="librtmp"
2064 librtmps_protocol_deps="librtmp"
2065 librtmpt_protocol_deps="librtmp"
2066 librtmpte_protocol_deps="librtmp"
2067 mmsh_protocol_select="http_protocol"
2068 mmst_protocol_select="network"
2069 rtmp_protocol_deps="!librtmp_protocol"
2070 rtmp_protocol_select="tcp_protocol"
2071 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2072 rtmps_protocol_deps="!librtmp_protocol"
2073 rtmps_protocol_select="tls_protocol"
2074 rtmpt_protocol_select="ffrtmphttp_protocol"
2075 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2076 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2077 rtp_protocol_select="udp_protocol"
2078 sctp_protocol_deps="struct_sctp_event_subscribe"
2079 sctp_protocol_select="network"
2080 srtp_protocol_select="rtp_protocol"
2081 tcp_protocol_select="network"
2082 tls_protocol_deps_any="openssl gnutls"
2083 tls_protocol_select="tcp_protocol"
2084 udp_protocol_select="network"
2085
2086 # filters
2087 aconvert_filter_deps="swresample"
2088 amovie_filter_deps="avcodec avformat"
2089 aresample_filter_deps="swresample"
2090 ass_filter_deps="libass"
2091 asyncts_filter_deps="avresample"
2092 atempo_filter_deps="avcodec rdft"
2093 blackframe_filter_deps="gpl"
2094 boxblur_filter_deps="gpl"
2095 colormatrix_filter_deps="gpl"
2096 cropdetect_filter_deps="gpl"
2097 decimate_filter_deps="gpl avcodec"
2098 delogo_filter_deps="gpl"
2099 deshake_filter_deps="avcodec"
2100 drawtext_filter_deps="libfreetype"
2101 ebur128_filter_deps="gpl"
2102 flite_filter_deps="libflite"
2103 frei0r_filter_deps="frei0r dlopen"
2104 frei0r_filter_extralibs='$ldl'
2105 frei0r_src_filter_deps="frei0r dlopen"
2106 frei0r_src_filter_extralibs='$ldl'
2107 geq_filter_deps="gpl"
2108 histeq_filter_deps="gpl"
2109 hqdn3d_filter_deps="gpl"
2110 hue_filter_deps="gpl"
2111 kerndeint_filter_deps="gpl"
2112 movie_filter_deps="avcodec avformat"
2113 mp_filter_deps="gpl avcodec swscale inline_asm"
2114 mptestsrc_filter_deps="gpl"
2115 negate_filter_deps="lut_filter"
2116 noise_filter_deps="gpl"
2117 resample_filter_deps="avresample"
2118 ocv_filter_deps="libopencv"
2119 pan_filter_deps="swresample"
2120 pp_filter_deps="gpl postproc"
2121 removelogo_filter_deps="avcodec avformat swscale"
2122 scale_filter_deps="swscale"
2123 smartblur_filter_deps="gpl swscale"
2124 showspectrum_filter_deps="avcodec rdft"
2125 stereo3d_filter_deps="gpl"
2126 subtitles_filter_deps="avformat avcodec libass"
2127 super2xsai_filter_deps="gpl"
2128 tinterlace_filter_deps="gpl"
2129 yadif_filter_deps="gpl"
2130 pixfmts_super2xsai_test_deps="super2xsai_filter"
2131 tinterlace_merge_test_deps="tinterlace_filter"
2132 tinterlace_pad_test_deps="tinterlace_filter"
2133
2134 # libraries
2135 avcodec_deps="avutil"
2136 avdevice_deps="avutil avcodec avformat"
2137 avfilter_deps="avutil"
2138 avformat_deps="avutil avcodec"
2139 avresample_deps="avutil"
2140 postproc_deps="avutil gpl"
2141 swscale_deps="avutil"
2142
2143 # programs
2144 ffmpeg_deps="avcodec avfilter avformat swscale swresample"
2145 ffmpeg_select="format_filter aformat_filter
2146                setpts_filter null_filter anull_filter"
2147 ffplay_deps="avcodec avformat swscale swresample sdl"
2148 ffplay_select="rdft crop_filter"
2149 ffprobe_deps="avcodec avformat"
2150 ffserver_deps="avformat ffm_muxer fork rtp_protocol rtsp_demuxer"
2151 ffserver_extralibs='$ldl'
2152
2153 # documentation
2154 podpages_deps="perl"
2155 manpages_deps="perl pod2man"
2156 htmlpages_deps="texi2html"
2157 txtpages_deps="makeinfo"
2158 doc_deps_any="manpages htmlpages podpages txtpages"
2159
2160 # default parameters
2161
2162 logfile="config.log"
2163
2164 # installation paths
2165 prefix_default="/usr/local"
2166 bindir_default='${prefix}/bin'
2167 datadir_default='${prefix}/share/ffmpeg'
2168 incdir_default='${prefix}/include'
2169 libdir_default='${prefix}/lib'
2170 mandir_default='${prefix}/share/man'
2171 shlibdir_default="$libdir_default"
2172
2173 # toolchain
2174 ar_default="ar"
2175 cc_default="gcc"
2176 cxx_default="g++"
2177 host_cc_default="gcc"
2178 cp_f="cp -f"
2179 install="install"
2180 ln_s="ln -s -f"
2181 nm_default="nm -g"
2182 objformat="elf"
2183 pkg_config_default=pkg-config
2184 ranlib="ranlib"
2185 strip_default="strip"
2186 yasmexe_default="yasm"
2187
2188 nogas=":"
2189
2190 # machine
2191 arch_default=$(uname -m)
2192 cpu="generic"
2193
2194 # OS
2195 target_os_default=$(tolower $(uname -s))
2196 host_os=$target_os_default
2197
2198 # configurable options
2199 enable $PROGRAM_LIST
2200 enable $DOCUMENT_LIST
2201 enable $(filter_out avresample $LIBRARY_LIST)
2202 enable stripping
2203
2204 enable asm
2205 enable debug
2206 enable doc
2207 enable optimizations
2208 enable runtime_cpudetect
2209 enable safe_bitstream_reader
2210 enable static
2211 enable swscale_alpha
2212
2213 # By default, enable only those hwaccels that have no external dependencies.
2214 enable dxva2 vdpau
2215
2216 # build settings
2217 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2218 FFSERVERLDFLAGS=-Wl,-E
2219 LIBPREF="lib"
2220 LIBSUF=".a"
2221 FULLNAME='$(NAME)$(BUILDSUF)'
2222 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2223 SLIBPREF="lib"
2224 SLIBSUF=".so"
2225 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2226 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2227 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2228 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2229 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2230 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2231
2232 asflags_filter=echo
2233 cflags_filter=echo
2234 ldflags_filter=echo
2235
2236 AS_C='-c'
2237 AS_O='-o $@'
2238 CC_C='-c'
2239 CC_E='-E -o $@'
2240 CC_O='-o $@'
2241 CXX_C='-c'
2242 CXX_O='-o $@'
2243 LD_O='-o $@'
2244 LD_LIB='-l%'
2245 LD_PATH='-L'
2246 HOSTCC_C='-c'
2247 HOSTCC_O='-o $@'
2248 HOSTLD_O='-o $@'
2249
2250 host_cflags='-O3 -g'
2251 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
2252 host_libs='-lm'
2253 host_cflags_filter=echo
2254 host_ldflags_filter=echo
2255
2256 target_path='$(CURDIR)'
2257
2258 # since the object filename is not given with the -MM flag, the compiler
2259 # is only able to print the basename, and we must add the path ourselves
2260 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2261 DEPFLAGS='-MM'
2262
2263 # find source path
2264 if test -f configure; then
2265     source_path=.
2266 else
2267     source_path=$(cd $(dirname "$0"); pwd)
2268     echo "$source_path" | grep -q '[[:blank:]]' &&
2269         die "Out of tree builds are impossible with whitespace in source path."
2270     test -e "$source_path/config.h" &&
2271         die "Out of tree builds are impossible with config.h in source dir."
2272 fi
2273
2274 for v in "$@"; do
2275     r=${v#*=}
2276     l=${v%"$r"}
2277     r=$(sh_quote "$r")
2278     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2279 done
2280
2281 find_things(){
2282     thing=$1
2283     pattern=$2
2284     file=$source_path/$3
2285     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2286 }
2287
2288 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2289 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2290 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2291 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2292 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2293 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2294 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2295 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2296 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2297 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2298 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2299
2300 ALL_COMPONENTS="
2301     $BSF_LIST
2302     $DECODER_LIST
2303     $DEMUXER_LIST
2304     $ENCODER_LIST
2305     $FILTER_LIST
2306     $HWACCEL_LIST
2307     $INDEV_LIST
2308     $MUXER_LIST
2309     $OUTDEV_LIST
2310     $PARSER_LIST
2311     $PROTOCOL_LIST
2312 "
2313
2314 for n in $COMPONENT_LIST; do
2315     v=$(toupper ${n%s})_LIST
2316     eval enable \$$v
2317     eval ${n}_if_any="\$$v"
2318 done
2319
2320 enable $ARCH_EXT_LIST
2321
2322 die_unknown(){
2323     echo "Unknown option \"$1\"."
2324     echo "See $0 --help for available options."
2325     exit 1
2326 }
2327
2328 print_3_columns() {
2329     cat | tr ' ' '\n' | sort | pr -r -3 -t
2330 }
2331
2332 show_list() {
2333     suffix=_$1
2334     shift
2335     echo $* | sed s/$suffix//g | print_3_columns
2336     exit 0
2337 }
2338
2339 rand_list(){
2340     IFS=', '
2341     set -- $*
2342     unset IFS
2343     for thing; do
2344         comp=${thing%:*}
2345         prob=${thing#$comp}
2346         prob=${prob#:}
2347         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2348         echo "prob ${prob:-0.5}"
2349         printf '%s\n' $comp
2350     done
2351 }
2352
2353 do_random(){
2354     action=$1
2355     shift
2356     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2357     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2358 }
2359
2360 for opt do
2361     optval="${opt#*=}"
2362     case "$opt" in
2363         --extra-ldflags=*)
2364             add_ldflags $optval
2365         ;;
2366         --extra-libs=*)
2367             add_extralibs $optval
2368         ;;
2369         --disable-devices)
2370             disable $INDEV_LIST $OUTDEV_LIST
2371         ;;
2372         --enable-debug=*)
2373             debuglevel="$optval"
2374         ;;
2375         --disable-programs)
2376             disable $PROGRAM_LIST
2377         ;;
2378         --disable-everything)
2379             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2380         ;;
2381         --disable-all)
2382             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2383             disable $LIBRARY_LIST $PROGRAM_LIST doc
2384         ;;
2385         --enable-random|--disable-random)
2386             action=${opt%%-random}
2387             do_random ${action#--} $COMPONENT_LIST
2388         ;;
2389         --enable-random=*|--disable-random=*)
2390             action=${opt%%-random=*}
2391             do_random ${action#--} $optval
2392         ;;
2393         --enable-*=*|--disable-*=*)
2394             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2395             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2396             eval list=\$$(toupper $thing)_LIST
2397             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2398             list=$(filter "$name" $list)
2399             [ "$list" = "" ] && warn "Option $opt did not match anything"
2400             $action $list
2401         ;;
2402         --enable-?*|--disable-?*)
2403             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2404             if is_in $option $COMPONENT_LIST; then
2405                 test $action = disable && action=unset
2406                 eval $action \$$(toupper ${option%s})_LIST
2407             elif is_in $option $CMDLINE_SELECT; then
2408                 $action $option
2409             else
2410                 die_unknown $opt
2411             fi
2412         ;;
2413         --list-*)
2414             NAME="${opt#--list-}"
2415             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2416             NAME=${NAME%s}
2417             eval show_list $NAME \$$(toupper $NAME)_LIST
2418         ;;
2419         --help|-h) show_help
2420         ;;
2421         --fatal-warnings) enable fatal_warnings
2422         ;;
2423         *)
2424             optname="${opt%%=*}"
2425             optname="${optname#--}"
2426             optname=$(echo "$optname" | sed 's/-/_/g')
2427             if is_in $optname $CMDLINE_SET; then
2428                 eval $optname='$optval'
2429             elif is_in $optname $CMDLINE_APPEND; then
2430                 append $optname "$optval"
2431             else
2432                 die_unknown $opt
2433             fi
2434         ;;
2435     esac
2436 done
2437
2438 disabled logging && logfile=/dev/null
2439
2440 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2441 set >> $logfile
2442
2443 test -n "$cross_prefix" && enable cross_compile
2444
2445 if enabled cross_compile; then
2446     test -n "$arch" && test -n "$target_os" ||
2447         die "Must specify target arch and OS when cross-compiling"
2448 fi
2449
2450 ar_default="${cross_prefix}${ar_default}"
2451 cc_default="${cross_prefix}${cc_default}"
2452 cxx_default="${cross_prefix}${cxx_default}"
2453 nm_default="${cross_prefix}${nm_default}"
2454 pkg_config_default="${cross_prefix}${pkg_config_default}"
2455 ranlib="${cross_prefix}${ranlib}"
2456 strip_default="${cross_prefix}${strip_default}"
2457
2458 sysinclude_default="${sysroot}/usr/include"
2459
2460 case "$toolchain" in
2461     clang-asan)
2462         cc_default="clang"
2463         add_cflags  -fsanitize=address
2464         add_ldflags -fsanitize=address
2465     ;;
2466     clang-tsan)
2467         cc_default="clang"
2468         add_cflags  -fsanitize=thread -pie
2469         add_ldflags -fsanitize=thread -pie
2470     ;;
2471     msvc)
2472         cc_default="c99wrap cl"
2473         ld_default="c99wrap link"
2474         nm_default="dumpbin -symbols"
2475         ar_default="lib"
2476         target_os_default="win32"
2477     ;;
2478     ?*)
2479         die "Unknown toolchain $toolchain"
2480     ;;
2481 esac
2482
2483 set_default arch cc cxx pkg_config strip sysinclude target_os yasmexe
2484 enabled cross_compile || host_cc_default=$cc
2485 set_default host_cc
2486
2487 if ! $pkg_config --version >/dev/null 2>&1; then
2488     warn "$pkg_config not found, library detection may fail."
2489     pkg_config=false
2490 fi
2491
2492 exesuf() {
2493     case $1 in
2494         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2495     esac
2496 }
2497
2498 EXESUF=$(exesuf $target_os)
2499 HOSTEXESUF=$(exesuf $host_os)
2500
2501 # set temporary file name
2502 : ${TMPDIR:=$TEMPDIR}
2503 : ${TMPDIR:=$TMP}
2504 : ${TMPDIR:=/tmp}
2505
2506 if ! check_cmd mktemp -u XXXXXX; then
2507     # simple replacement for missing mktemp
2508     # NOT SAFE FOR GENERAL USE
2509     mktemp(){
2510         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2511     }
2512 fi
2513
2514 tmpfile(){
2515     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2516         (set -C; exec > $tmp) 2>/dev/null ||
2517         die "Unable to create temporary file in $TMPDIR."
2518     append TMPFILES $tmp
2519     eval $1=$tmp
2520 }
2521
2522 trap 'rm -f -- $TMPFILES' EXIT
2523
2524 tmpfile TMPASM .asm
2525 tmpfile TMPC   .c
2526 tmpfile TMPCPP .cpp
2527 tmpfile TMPE   $EXESUF
2528 tmpfile TMPH   .h
2529 tmpfile TMPO   .o
2530 tmpfile TMPS   .S
2531 tmpfile TMPSH  .sh
2532 tmpfile TMPV   .ver
2533
2534 unset -f mktemp
2535
2536 chmod +x $TMPE
2537
2538 # make sure we can execute files in $TMPDIR
2539 cat > $TMPSH 2>> $logfile <<EOF
2540 #! /bin/sh
2541 EOF
2542 chmod +x $TMPSH >> $logfile 2>&1
2543 if ! $TMPSH >> $logfile 2>&1; then
2544     cat <<EOF
2545 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2546 variable to another directory and make sure that it is not mounted noexec.
2547 EOF
2548     die "Sanity test failed."
2549 fi
2550
2551 ccc_flags(){
2552     for flag; do
2553         case $flag in
2554             -std=c99)           echo -c99                       ;;
2555             -mcpu=*)            echo -arch ${flag#*=}           ;;
2556             -mieee)             echo -ieee                      ;;
2557             -O*|-fast)          echo $flag                      ;;
2558             -fno-math-errno)    echo -assume nomath_errno       ;;
2559             -g)                 echo -g3                        ;;
2560             -Wall)              echo -msg_enable level2         ;;
2561             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2562             -Wl,*)              echo $flag                      ;;
2563             -f*|-W*)                                            ;;
2564             *)                  echo $flag                      ;;
2565         esac
2566    done
2567 }
2568
2569 msvc_flags(){
2570     for flag; do
2571         case $flag in
2572             -fomit-frame-pointer) echo -Oy ;;
2573             -g)                   echo -Z7 ;;
2574             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389 \
2575                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2576                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2577                                        -wd4554 \
2578                                        -wd4996 -wd4273 ;;
2579             -std=c99)             ;;
2580             -fno-math-errno)      ;;
2581             -fno-common)          ;;
2582             -fno-signed-zeros)    ;;
2583             -fPIC)                ;;
2584             -lz)                  echo zlib.lib ;;
2585             -lavifil32)           echo vfw32.lib ;;
2586             -lavicap32)           echo vfw32.lib user32.lib ;;
2587             -l*)                  echo ${flag#-l}.lib ;;
2588             *)                    echo $flag ;;
2589         esac
2590     done
2591 }
2592
2593 pgi_flags(){
2594     for flag; do
2595         case $flag in
2596             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2597             -fomit-frame-pointer) echo -Mnoframe ;;
2598             -g)                   echo -gopt ;;
2599             *)                    echo $flag ;;
2600         esac
2601     done
2602 }
2603
2604 suncc_flags(){
2605     for flag; do
2606         case $flag in
2607             -march=*|-mcpu=*)
2608                 case "${flag#*=}" in
2609                     native)                   echo -xtarget=native       ;;
2610                     v9|niagara)               echo -xarch=sparc          ;;
2611                     ultrasparc)               echo -xarch=sparcvis       ;;
2612                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2613                     i586|pentium)             echo -xchip=pentium        ;;
2614                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2615                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2616                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2617                     pentium4*)          echo -xtarget=pentium4           ;;
2618                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2619                     *-sse3)             echo -xarch=sse3                 ;;
2620                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2621                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2622                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2623                     amdfam10|barcelona)       echo -xtarget=barcelona    ;;
2624                     bdver*)                   echo -xarch=avx            ;;
2625                     athlon-4|athlon-[mx]p)    echo -xarch=ssea           ;;
2626                     k8|opteron|athlon64|athlon-fx)
2627                                               echo -xarch=sse2a          ;;
2628                     athlon*)                  echo -xarch=pentium_proa   ;;
2629                 esac
2630                 ;;
2631             -std=c99)             echo -xc99              ;;
2632             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2633             -fPIC)                echo -KPIC -xcode=pic32 ;;
2634             -W*,*)                echo $flag              ;;
2635             -f*-*|-W*|-mimpure-text)                      ;;
2636             -shared)              echo -G                 ;;
2637             *)                    echo $flag              ;;
2638         esac
2639     done
2640 }
2641
2642 tms470_flags(){
2643     for flag; do
2644         case $flag in
2645             -march=*|-mcpu=*)
2646                 case "${flag#*=}" in
2647                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2648                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2649                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2650                     armv6*|arm11*)          echo -mv=6   ;;
2651                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2652                                             echo -mv=5e  ;;
2653                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2654                 esac
2655                 ;;
2656             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2657             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2658             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2659             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2660             -msoft-float)   echo --float_support=vfplib       ;;
2661             -O[0-3]|-mf=*)  echo $flag                        ;;
2662             -g)             echo -g -mn                       ;;
2663             -pds=*)         echo $flag                        ;;
2664             -D*|-I*)        echo $flag                        ;;
2665             --gcc|--abi=*)  echo $flag                        ;;
2666             -me)            echo $flag                        ;;
2667         esac
2668     done
2669 }
2670
2671 probe_cc(){
2672     pfx=$1
2673     _cc=$2
2674
2675     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2676     unset _ld_o _ldflags _ld_lib _ld_path
2677     unset _depflags _DEPCMD _DEPFLAGS
2678     _flags_filter=echo
2679
2680     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2681         _type=llvm_gcc
2682         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2683         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2684         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2685         _cflags_speed='-O3'
2686         _cflags_size='-Os'
2687     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2688         _type=gcc
2689         gcc_version=$($_cc --version | head -n1)
2690         gcc_basever=$($_cc -dumpversion)
2691         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2692         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2693         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2694         if ! $_cc -dumpversion | grep -q '^2\.'; then
2695             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2696         fi
2697         _cflags_speed='-O3'
2698         _cflags_size='-Os'
2699     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2700         _type=icc
2701         _ident=$($_cc --version | head -n1)
2702         _depflags='-MMD'
2703         _cflags_speed='-O3'
2704         _cflags_size='-Os'
2705         _cflags_noopt='-O1'
2706     elif $_cc -v 2>&1 | grep -q xlc; then
2707         _type=xlc
2708         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2709         _cflags_speed='-O5'
2710         _cflags_size='-O5 -qcompact'
2711     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2712         _type=ccc
2713         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2714         _DEPFLAGS='-M'
2715         _cflags_speed='-fast'
2716         _cflags_size='-O1'
2717         _flags_filter=ccc_flags
2718     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2719         test -d "$sysroot" || die "No valid sysroot specified."
2720         _type=armcc
2721         _ident=$($_cc --vsn | head -n1)
2722         armcc_conf="$PWD/armcc.conf"
2723         $_cc --arm_linux_configure                 \
2724              --arm_linux_config_file="$armcc_conf" \
2725              --configure_sysroot="$sysroot"        \
2726              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2727              die "Error creating armcc configuration file."
2728         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2729         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2730         as_default="${cross_prefix}gcc"
2731         _depflags='-MMD'
2732         _cflags_speed='-O3'
2733         _cflags_size='-Os'
2734     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2735         _type=tms470
2736         _ident=$($_cc -version | head -n1 | tr -s ' ')
2737         _flags='--gcc --abi=eabi -me'
2738         _cc_e='-ppl -fe=$@'
2739         _cc_o='-fe=$@'
2740         _depflags='-ppa -ppd=$(@:.o=.d)'
2741         _cflags_speed='-O3 -mf=5'
2742         _cflags_size='-O3 -mf=2'
2743         _flags_filter=tms470_flags
2744     elif $_cc -v 2>&1 | grep -q clang; then
2745         _type=clang
2746         _ident=$($_cc --version | head -n1)
2747         _depflags='-MMD'
2748         _cflags_speed='-O3'
2749         _cflags_size='-Os'
2750     elif $_cc -V 2>&1 | grep -q Sun; then
2751         _type=suncc
2752         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2753         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2754         _DEPFLAGS='-xM1 -xc99'
2755         _ldflags='-std=c99'
2756         _cflags_speed='-O5'
2757         _cflags_size='-O5 -xspace'
2758         _flags_filter=suncc_flags
2759     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2760         _type=pathscale
2761         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2762         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2763         _cflags_speed='-O2'
2764         _cflags_size='-Os'
2765         _flags_filter='filter_out -Wdisabled-optimization'
2766     elif $_cc -v 2>&1 | grep -q Open64; then
2767         _type=open64
2768         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2769         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2770         _cflags_speed='-O2'
2771         _cflags_size='-Os'
2772         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2773     elif $_cc -V 2>&1 | grep -q Portland; then
2774         _type=pgi
2775         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2776         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2777         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2778         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2779         _cflags_noopt="-O1"
2780         _flags_filter=pgi_flags
2781     elif $_cc 2>&1 | grep -q Microsoft; then
2782         _type=msvc
2783         _ident=$($cc 2>&1 | head -n1)
2784         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2785         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2786         _cflags_speed="-O2"
2787         _cflags_size="-O1"
2788         # Nonstandard output options, to avoid msys path conversion issues, relies on wrapper to remap it
2789         if $_cc 2>&1 | grep -q Linker; then
2790             _ld_o='-out $@'
2791         else
2792             _ld_o='-Fe$@'
2793         fi
2794         _cc_o='-Fo $@'
2795         _cc_e='-P -Fi $@'
2796         _flags_filter=msvc_flags
2797         _ld_lib='lib%.a'
2798         _ld_path='-libpath:'
2799         _flags='-nologo'
2800         _cflags='-D_USE_MATH_DEFINES -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2801         if [ $pfx = hostcc ]; then
2802             append _cflags -Dsnprintf=_snprintf
2803         fi
2804         disable stripping
2805     fi
2806
2807     eval ${pfx}_type=\$_type
2808     eval ${pfx}_ident=\$_ident
2809 }
2810
2811 set_ccvars(){
2812     eval ${1}_C=\${_cc_c-\${${1}_C}}
2813     eval ${1}_E=\${_cc_e-\${${1}_E}}
2814     eval ${1}_O=\${_cc_o-\${${1}_O}}
2815
2816     if [ -n "$_depflags" ]; then
2817         eval ${1}_DEPFLAGS=\$_depflags
2818     else
2819         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
2820         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
2821         eval DEP${1}FLAGS=\$_flags
2822     fi
2823 }
2824
2825 probe_cc cc "$cc"
2826 cflags_filter=$_flags_filter
2827 cflags_speed=$_cflags_speed
2828 cflags_size=$_cflags_size
2829 cflags_noopt=$_cflags_noopt
2830 add_cflags $_flags $_cflags
2831 cc_ldflags=$_ldflags
2832 set_ccvars CC
2833
2834 probe_cc hostcc "$host_cc"
2835 host_cflags_filter=$_flags_filter
2836 add_host_cflags  $_flags $_cflags
2837 set_ccvars HOSTCC
2838
2839 test -n "$cc_type" && enable $cc_type ||
2840     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
2841
2842 : ${as_default:=$cc}
2843 : ${dep_cc_default:=$cc}
2844 : ${ld_default:=$cc}
2845 : ${host_ld_default:=$host_cc}
2846 set_default ar as dep_cc ld host_ld
2847
2848 probe_cc as "$as"
2849 asflags_filter=$_flags_filter
2850 add_asflags $_flags $_cflags
2851 set_ccvars AS
2852
2853 probe_cc ld "$ld"
2854 ldflags_filter=$_flags_filter
2855 add_ldflags $_flags $_ldflags
2856 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
2857 LD_O=${_ld_o-$LD_O}
2858 LD_LIB=${_ld_lib-$LD_LIB}
2859 LD_PATH=${_ld_path-$LD_PATH}
2860
2861 probe_cc hostld "$host_ld"
2862 host_ldflags_filter=$_flags_filter
2863 add_host_ldflags $_flags $_ldflags
2864 HOSTLD_O=${_ld_o-$HOSTLD_O}
2865
2866 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
2867     probe_cc depcc "$dep_cc"
2868     CCDEP=${_DEPCMD:-$DEPCMD}
2869     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
2870     DEPCCFLAGS=$_flags
2871 fi
2872
2873 if $ar 2>&1 | grep -q Microsoft; then
2874     arflags="-nologo"
2875     ar_o='-out:$@'
2876 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
2877     arflags="rq"
2878     ar_o='$@'
2879 else
2880     arflags="rc"
2881     ar_o='$@'
2882 fi
2883
2884 add_cflags $extra_cflags
2885 add_cxxflags $extra_cxxflags
2886 add_asflags $extra_cflags
2887
2888 if test -n "$sysroot"; then
2889     case "$cc_type" in
2890         gcc|llvm_gcc|clang)
2891             add_cppflags --sysroot="$sysroot"
2892             add_ldflags --sysroot="$sysroot"
2893         ;;
2894         tms470)
2895             add_cppflags -I"$sysinclude"
2896             add_ldflags  --sysroot="$sysroot"
2897         ;;
2898     esac
2899 fi
2900
2901 if test "$cpu" = host; then
2902     enabled cross_compile && die "--cpu=host makes no sense when cross-compiling."
2903
2904     case "$cc_type" in
2905         gcc|llvm_gcc)
2906             check_native(){
2907                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
2908                 sed -n "/cc1.*$1=/{
2909                             s/.*$1=\\([^ ]*\\).*/\\1/
2910                             p
2911                             q
2912                         }" $TMPE
2913             }
2914             cpu=$(check_native -march || check_native -mcpu)
2915         ;;
2916     esac
2917
2918     test "${cpu:-host}" = host && die "--cpu=host not supported with compiler $cc"
2919 fi
2920
2921 # Deal with common $arch aliases
2922 case "$arch" in
2923     aarch64|arm64)
2924         arch="aarch64"
2925     ;;
2926     arm*|iPad*)
2927         arch="arm"
2928     ;;
2929     mips*|IP*)
2930         arch="mips"
2931     ;;
2932     parisc*|hppa*)
2933         arch="parisc"
2934     ;;
2935     "Power Macintosh"|ppc*|powerpc*)
2936         arch="ppc"
2937     ;;
2938     s390|s390x)
2939         arch="s390"
2940     ;;
2941     sh4|sh)
2942         arch="sh4"
2943     ;;
2944     sun4u|sparc*)
2945         arch="sparc"
2946     ;;
2947     tilegx|tile-gx)
2948         arch="tilegx"
2949     ;;
2950     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
2951         arch="x86"
2952     ;;
2953 esac
2954
2955 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
2956 enable $arch
2957
2958 # Add processor-specific flags
2959 if enabled aarch64; then
2960
2961     case $cpu in
2962         armv*)
2963             cpuflags="-march=$cpu"
2964         ;;
2965         *)
2966             cpuflags="-mcpu=$cpu"
2967         ;;
2968     esac
2969
2970 elif enabled alpha; then
2971
2972     cpuflags="-mcpu=$cpu"
2973
2974 elif enabled arm; then
2975
2976     check_arm_arch() {
2977         check_cpp_condition stddef.h \
2978             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
2979             $cpuflags
2980     }
2981
2982     probe_arm_arch() {
2983         if   check_arm_arch 4;        then echo armv4;
2984         elif check_arm_arch 4T;       then echo armv4t;
2985         elif check_arm_arch 5;        then echo armv5;
2986         elif check_arm_arch 5E;       then echo armv5e;
2987         elif check_arm_arch 5T;       then echo armv5t;
2988         elif check_arm_arch 5TE;      then echo armv5te;
2989         elif check_arm_arch 5TEJ;     then echo armv5te;
2990         elif check_arm_arch 6;        then echo armv6;
2991         elif check_arm_arch 6J;       then echo armv6j;
2992         elif check_arm_arch 6K;       then echo armv6k;
2993         elif check_arm_arch 6Z;       then echo armv6z;
2994         elif check_arm_arch 6ZK;      then echo armv6zk;
2995         elif check_arm_arch 6T2;      then echo armv6t2;
2996         elif check_arm_arch 7;        then echo armv7;
2997         elif check_arm_arch 7A  7_A;  then echo armv7-a;
2998         elif check_arm_arch 7R  7_R;  then echo armv7-r;
2999         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3000         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3001         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3002         fi
3003     }
3004
3005     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3006
3007     case $cpu in
3008         armv*)
3009             cpuflags="-march=$cpu"
3010             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3011         ;;
3012         *)
3013             cpuflags="-mcpu=$cpu"
3014             case $cpu in
3015                 cortex-a*)                               subarch=armv7a  ;;
3016                 cortex-r*)                               subarch=armv7r  ;;
3017                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3018                 arm11*)                                  subarch=armv6   ;;
3019                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3020                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3021                 *)                             subarch=$(probe_arm_arch) ;;
3022             esac
3023         ;;
3024     esac
3025
3026     case "$subarch" in
3027         armv5t*)    enable fast_clz                ;;
3028         armv[6-8]*) enable fast_clz fast_unaligned ;;
3029     esac
3030
3031 elif enabled avr32; then
3032
3033     case $cpu in
3034         ap7[02]0[0-2])
3035             subarch="avr32_ap"
3036             cpuflags="-mpart=$cpu"
3037         ;;
3038         ap)
3039             subarch="avr32_ap"
3040             cpuflags="-march=$cpu"
3041         ;;
3042         uc3[ab]*)
3043             subarch="avr32_uc"
3044             cpuflags="-mcpu=$cpu"
3045         ;;
3046         uc)
3047             subarch="avr32_uc"
3048             cpuflags="-march=$cpu"
3049         ;;
3050     esac
3051
3052 elif enabled bfin; then
3053
3054     cpuflags="-mcpu=$cpu"
3055
3056 elif enabled mips; then
3057
3058     cpuflags="-march=$cpu"
3059
3060     case $cpu in
3061         24kc)
3062             disable mipsfpu
3063             disable mipsdspr1
3064             disable mipsdspr2
3065         ;;
3066         24kf*)
3067             disable mipsdspr1
3068             disable mipsdspr2
3069         ;;
3070         24kec|34kc|1004kc)
3071             disable mipsfpu
3072             disable mipsdspr2
3073         ;;
3074         24kef*|34kf*|1004kf*)
3075             disable mipsdspr2
3076         ;;
3077         74kc)
3078             disable mipsfpu
3079         ;;
3080     esac
3081
3082 elif enabled ppc; then
3083
3084     case $(tolower $cpu) in
3085         601|ppc601|powerpc601)
3086             cpuflags="-mcpu=601"
3087             disable altivec
3088         ;;
3089         603*|ppc603*|powerpc603*)
3090             cpuflags="-mcpu=603"
3091             disable altivec
3092         ;;
3093         604*|ppc604*|powerpc604*)
3094             cpuflags="-mcpu=604"
3095             disable altivec
3096         ;;
3097         g3|75*|ppc75*|powerpc75*)
3098             cpuflags="-mcpu=750"
3099             disable altivec
3100         ;;
3101         g4|745*|ppc745*|powerpc745*)
3102             cpuflags="-mcpu=7450"
3103         ;;
3104         74*|ppc74*|powerpc74*)
3105             cpuflags="-mcpu=7400"
3106         ;;
3107         g5|970|ppc970|powerpc970)
3108             cpuflags="-mcpu=970"
3109         ;;
3110         power[3-7]*)
3111             cpuflags="-mcpu=$cpu"
3112         ;;
3113         cell)
3114             cpuflags="-mcpu=cell"
3115             enable ldbrx
3116         ;;
3117         e500mc)
3118             cpuflags="-mcpu=e500mc"
3119             disable altivec
3120         ;;
3121         e500v2)
3122             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3123             disable altivec
3124         ;;
3125         e500)
3126             cpuflags="-mcpu=8540 -mhard-float"
3127             disable altivec
3128         ;;
3129     esac
3130
3131 elif enabled sparc; then
3132
3133     case $cpu in
3134         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3135             cpuflags="-mcpu=$cpu"
3136             disable vis
3137         ;;
3138         ultrasparc*|niagara[234])
3139             cpuflags="-mcpu=$cpu"
3140         ;;
3141     esac
3142
3143 elif enabled x86; then
3144
3145     case $cpu in
3146         i[345]86|pentium)
3147             cpuflags="-march=$cpu"
3148             disable mmx
3149         ;;
3150         # targets that do NOT support conditional mov (cmov)
3151         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3152             cpuflags="-march=$cpu"
3153             disable cmov
3154         ;;
3155         # targets that do support conditional mov (cmov)
3156         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3157             cpuflags="-march=$cpu"
3158             enable cmov
3159             enable fast_cmov
3160         ;;
3161         # targets that do support conditional mov but on which it's slow
3162         pentium4|pentium4m|prescott|nocona)
3163             cpuflags="-march=$cpu"
3164             enable cmov
3165             disable fast_cmov
3166         ;;
3167     esac
3168
3169 fi
3170
3171 if [ "$cpu" != generic ]; then
3172     add_cflags  $cpuflags
3173     add_asflags $cpuflags
3174 fi
3175
3176 # compiler sanity check
3177 check_exec <<EOF
3178 int main(void){ return 0; }
3179 EOF
3180 if test "$?" != 0; then
3181     echo "$cc is unable to create an executable file."
3182     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3183         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3184         echo "Only do this if you know what cross compiling means."
3185     fi
3186     die "C compiler test failed."
3187 fi
3188
3189 add_cppflags -D_ISOC99_SOURCE
3190 add_cxxflags -D__STDC_CONSTANT_MACROS
3191 check_cflags -std=c99
3192 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3193 #include <stdlib.h>
3194 EOF
3195 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3196 #include <stdlib.h>
3197 EOF
3198
3199 check_host_cflags -std=c99
3200 check_host_cflags -Wall
3201
3202 check_64bit(){
3203     arch32=$1
3204     arch64=$2
3205     expr=$3
3206     check_code cc "" "int test[2*($expr) - 1]" &&
3207         subarch=$arch64 || subarch=$arch32
3208 }
3209
3210 case "$arch" in
3211     aarch64|alpha|ia64)
3212         spic=$shared
3213     ;;
3214     mips)
3215         check_64bit mips mips64 '_MIPS_SIM > 1'
3216         spic=$shared
3217     ;;
3218     parisc)
3219         check_64bit parisc parisc64 'sizeof(void *) > 4'
3220         spic=$shared
3221     ;;
3222     ppc)
3223         check_64bit ppc ppc64 'sizeof(void *) > 4'
3224         spic=$shared
3225     ;;
3226     sparc)
3227         check_64bit sparc sparc64 'sizeof(void *) > 4'
3228         spic=$shared
3229     ;;
3230     x86)
3231         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3232         if test "$subarch" = "x86_64"; then
3233             spic=$shared
3234         fi
3235     ;;
3236     ppc)
3237         check_cc <<EOF && subarch="ppc64"
3238         int test[(int)sizeof(char*) - 7];
3239 EOF
3240     ;;
3241 esac
3242
3243 enable $subarch
3244 enabled spic && enable pic
3245
3246 # OS specific
3247 case $target_os in
3248     haiku)
3249         prefix_default="/boot/common"
3250         network_extralibs="-lnetwork"
3251         host_libs=
3252         ;;
3253     sunos)
3254         FFSERVERLDFLAGS=""
3255         SHFLAGS='-shared -Wl,-h,$$(@F)'
3256         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3257         network_extralibs="-lsocket -lnsl"
3258         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3259         # When using suncc to build, the Solaris linker will mark
3260         # an executable with each instruction set encountered by
3261         # the Solaris assembler.  As our libraries contain their own
3262         # guards for processor-specific code, instead suppress
3263         # generation of the HWCAPS ELF section on Solaris x86 only.
3264         enabled_all suncc x86 && echo "hwcap_1 = OVERRIDE;" > mapfile && add_ldflags -Wl,-M,mapfile
3265         nm_default='nm -P -g'
3266         ;;
3267     netbsd)
3268         disable symver
3269         oss_indev_extralibs="-lossaudio"
3270         oss_outdev_extralibs="-lossaudio"
3271         enabled gcc || check_ldflags -Wl,-zmuldefs
3272         ;;
3273     openbsd|bitrig)
3274         disable symver
3275         SHFLAGS='-shared'
3276         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3277         SLIB_INSTALL_LINKS=
3278         oss_indev_extralibs="-lossaudio"
3279         oss_outdev_extralibs="-lossaudio"
3280         ;;
3281     dragonfly)
3282         disable symver
3283         ;;
3284     freebsd)
3285         ;;
3286     bsd/os)
3287         add_extralibs -lpoll -lgnugetopt
3288         strip="strip -d"
3289         ;;
3290     darwin)
3291         gas="gas-preprocessor.pl $cc"
3292         enabled ppc && add_asflags -force_cpusubtype_ALL
3293         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3294         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3295         strip="${strip} -x"
3296         add_ldflags -Wl,-dynamic,-search_paths_first
3297         SLIBSUF=".dylib"
3298         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3299         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3300         FFSERVERLDFLAGS=-Wl,-bind_at_load
3301         objformat="macho"
3302         enabled x86_64 && objformat="macho64"
3303         enabled_any pic shared ||
3304             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3305         ;;
3306     mingw32*)
3307         if test $target_os = "mingw32ce"; then
3308             disable network
3309         else
3310             target_os=mingw32
3311         fi
3312         LIBTARGET=i386
3313         if enabled x86_64; then
3314             LIBTARGET="i386:x86-64"
3315         elif enabled arm; then
3316             LIBTARGET=arm-wince
3317         fi
3318         shlibdir_default="$bindir_default"
3319         SLIBPREF=""
3320         SLIBSUF=".dll"
3321         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3322         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3323         dlltool="${cross_prefix}dlltool"
3324         if check_cmd lib.exe -list; then
3325             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3326             if enabled x86_64; then
3327                 LIBTARGET=x64
3328             fi
3329         elif check_cmd $dlltool --version; then
3330             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3331         fi
3332         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3333         SLIB_INSTALL_LINKS=
3334         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3335         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3336         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3337         objformat="win32"
3338         ranlib=:
3339         enable dos_paths
3340         ;;
3341     win32|win64)
3342         if enabled shared; then
3343             # Link to the import library instead of the normal static library
3344             # for shared libs.
3345             LD_LIB='%.lib'
3346             # Cannot build shared and static libraries at the same time with
3347             # MSVC.
3348             disable static
3349         fi
3350         shlibdir_default="$bindir_default"
3351         SLIBPREF=""
3352         SLIBSUF=".dll"
3353         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3354         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3355         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3356         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3357         SLIB_INSTALL_LINKS=
3358         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3359         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3360         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3361         objformat="win32"
3362         ranlib=:
3363         enable dos_paths
3364         ;;
3365     cygwin*)
3366         target_os=cygwin
3367         shlibdir_default="$bindir_default"
3368         SLIBPREF="cyg"
3369         SLIBSUF=".dll"
3370         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3371         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3372         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3373         SLIB_INSTALL_LINKS=
3374         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3375         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3376         objformat="win32"
3377         enable dos_paths
3378         ;;
3379     *-dos|freedos|opendos)
3380         network_extralibs="-lsocket"
3381         objformat="coff"
3382         enable dos_paths
3383         add_cppflags -U__STRICT_ANSI__
3384         ;;
3385     linux)
3386         enable dv1394
3387         ;;
3388     irix*)
3389         target_os=irix
3390         ranlib="echo ignoring ranlib"
3391         ;;
3392     os/2*)
3393         strip="lxlite -CS"
3394         ln_s="cp -f"
3395         objformat="aout"
3396         add_cppflags -D_GNU_SOURCE
3397         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3398         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3399         FFSERVERLDFLAGS=""
3400         LIBSUF="_s.a"
3401         SLIBPREF=""
3402         SLIBSUF=".dll"
3403         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3404         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3405         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3406             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3407             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3408             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3409             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3410             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3411         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3412             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3413         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3414         enable dos_paths
3415         enable_weak os2threads
3416         ;;
3417     gnu/kfreebsd)
3418         add_cppflags -D_BSD_SOURCE
3419         ;;
3420     gnu)
3421         ;;
3422     qnx)
3423         add_cppflags -D_QNX_SOURCE
3424         network_extralibs="-lsocket"
3425         ;;
3426     symbian)
3427         SLIBSUF=".dll"
3428         enable dos_paths
3429         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3430         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3431         add_ldflags -Wl,--target1-abs,--no-undefined \
3432                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3433                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3434         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3435                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3436                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3437         ;;
3438     osf1)
3439         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3440         FFSERVERLDFLAGS=
3441         ;;
3442     minix)
3443         ;;
3444     plan9)
3445         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3446                      -D_REENTRANT_SOURCE        \
3447                      -D_RESEARCH_SOURCE         \
3448                      -DFD_SETSIZE=96            \
3449                      -DHAVE_SOCK_OPTS
3450         add_compat strtod.o strtod=avpriv_strtod
3451         network_extralibs='-lbsd'
3452         exeobjs=compat/plan9/main.o
3453         disable ffserver
3454         cp_f='cp'
3455         ;;
3456     none)
3457         ;;
3458     *)
3459         die "Unknown OS '$target_os'."
3460         ;;
3461 esac
3462
3463 # determine libc flavour
3464
3465 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3466 if check_cpp_condition features.h "defined __UCLIBC__"; then
3467     libc_type=uclibc
3468     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3469 elif check_cpp_condition features.h "defined __GLIBC__"; then
3470     libc_type=glibc
3471     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3472 # MinGW headers can be installed on Cygwin, so check for newlib first.
3473 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3474     libc_type=newlib
3475     add_cppflags -U__STRICT_ANSI__
3476 elif check_header _mingw.h; then
3477     libc_type=mingw
3478     check_cpp_condition _mingw.h \
3479         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3480             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3481         die "ERROR: MinGW runtime version must be >= 3.15."
3482     add_cppflags -U__STRICT_ANSI__
3483     if check_cpp_condition _mingw.h "defined(__MINGW64_VERSION_MAJOR) && \
3484             __MINGW64_VERSION_MAJOR < 3"; then
3485         add_compat msvcrt/snprintf.o
3486         add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3487     fi
3488 elif check_func_headers stdlib.h _get_doserrno; then
3489     libc_type=msvcrt
3490     add_compat strtod.o strtod=avpriv_strtod
3491     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3492                                  _snprintf=avpriv_snprintf  \
3493                                  vsnprintf=avpriv_vsnprintf
3494 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3495     libc_type=klibc
3496 fi
3497
3498 test -n "$libc_type" && enable $libc_type
3499
3500 # hacks for compiler/libc/os combinations
3501
3502 if enabled_all tms470 glibc; then
3503     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3504     add_cppflags -D__USER_LABEL_PREFIX__=
3505     add_cppflags -D__builtin_memset=memset
3506     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3507     add_cflags   -pds=48    # incompatible redefinition of macro
3508 fi
3509
3510 if enabled_all ccc glibc; then
3511     add_ldflags -Wl,-z,now  # calls to libots crash without this
3512 fi
3513
3514 esc(){
3515     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3516 }
3517
3518 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3519
3520 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable pic
3521
3522 set_default $PATHS_LIST
3523 set_default nm
3524
3525 # we need to build at least one lib type
3526 if ! enabled_any static shared; then
3527     cat <<EOF
3528 At least one library type must be built.
3529 Specify --enable-static to build the static libraries or --enable-shared to
3530 build the shared libraries as well. To only build the shared libraries specify
3531 --disable-static in addition to --enable-shared.
3532 EOF
3533     exit 1;
3534 fi
3535
3536 die_license_disabled() {
3537     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3538 }
3539
3540 die_license_disabled_gpl() {
3541     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3542 }
3543
3544 die_license_disabled gpl libcdio
3545 die_license_disabled gpl libutvideo
3546 die_license_disabled gpl libx264
3547 die_license_disabled gpl libxavs
3548 die_license_disabled gpl libxvid
3549 die_license_disabled gpl x11grab
3550
3551 die_license_disabled nonfree libaacplus
3552 die_license_disabled nonfree libfaac
3553 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
3554 enabled gpl && die_license_disabled_gpl nonfree openssl
3555
3556 die_license_disabled version3 libopencore_amrnb
3557 die_license_disabled version3 libopencore_amrwb
3558 die_license_disabled version3 libvo_aacenc
3559 die_license_disabled version3 libvo_amrwbenc
3560
3561 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3562
3563 disabled optimizations || check_cflags -fomit-frame-pointer
3564
3565 enable_pic() {
3566     enable pic
3567     add_cppflags -DPIC
3568     add_cflags   -fPIC
3569     add_asflags  -fPIC
3570 }
3571
3572 enabled pic && enable_pic
3573
3574 check_cc <<EOF || die "Symbol mangling check failed."
3575 int ff_extern;
3576 EOF
3577 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3578 extern_prefix=${sym%%ff_extern*}
3579
3580 check_cc <<EOF && enable_weak inline_asm
3581 void foo(void) { __asm__ volatile ("" ::); }
3582 EOF
3583
3584 _restrict=
3585 for restrict_keyword in restrict __restrict__ __restrict; do
3586     check_cc <<EOF && _restrict=$restrict_keyword && break
3587 void foo(char * $restrict_keyword p);
3588 EOF
3589 done
3590
3591 check_cc <<EOF && enable attribute_packed
3592 struct { int x; } __attribute__((packed)) x;
3593 EOF
3594
3595 check_cc <<EOF && enable attribute_may_alias
3596 union { int x; } __attribute__((may_alias)) x;
3597 EOF
3598
3599 check_cc <<EOF || die "endian test failed"
3600 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3601 EOF
3602 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3603
3604 if enabled alpha; then
3605
3606     check_cflags -mieee
3607
3608 elif enabled arm; then
3609
3610     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
3611 float func(float a, float b){ return a+b; }
3612 EOF
3613
3614     enabled thumb && check_cflags -mthumb || check_cflags -marm
3615     nogas=die
3616
3617     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3618         enable vfp_args
3619     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3620         case "${cross_prefix:-$cc}" in
3621             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3622             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3623 __asm__ (".eabi_attribute 28, 1");
3624 int main(void) { return 0; }
3625 EOF
3626         esac
3627         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3628     fi
3629
3630     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3631     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3632     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3633     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3634     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3635     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3636
3637     [ $target_os = linux ] ||
3638         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3639             $ARCH_EXT_LIST_ARM
3640
3641     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3642     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3643
3644     enabled_all armv6t2 shared !pic && enable_pic
3645
3646 elif enabled mips; then
3647
3648     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3649     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
3650      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
3651     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
3652      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
3653     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
3654      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
3655     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
3656      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
3657
3658 elif enabled parisc; then
3659
3660     if enabled gcc; then
3661         case $($cc -dumpversion) in
3662             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3663         esac
3664     fi
3665
3666 elif enabled ppc; then
3667
3668     enable local_aligned_8 local_aligned_16
3669
3670     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3671     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3672     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3673     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3674
3675     # AltiVec flags: The FSF version of GCC differs from the Apple version
3676     if enabled altivec; then
3677         nogas=warn
3678         check_cflags -maltivec -mabi=altivec &&
3679         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3680         check_cflags -faltivec
3681
3682         # check if our compiler supports Motorola AltiVec C API
3683         check_cc <<EOF || disable altivec
3684 $inc_altivec_h
3685 int main(void) {
3686     vector signed int v1 = (vector signed int) { 0 };
3687     vector signed int v2 = (vector signed int) { 1 };
3688     v1 = vec_add(v1, v2);
3689     return 0;
3690 }
3691 EOF
3692
3693         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3694     fi
3695
3696 elif enabled sparc; then
3697
3698     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3699
3700 elif enabled x86; then
3701
3702     check_builtin rdtsc    intrin.h   "__rdtsc()"
3703     check_builtin mm_empty mmintrin.h "_mm_empty()"
3704
3705     enable local_aligned_8 local_aligned_16
3706
3707     # check whether EBP is available on x86
3708     # As 'i' is stored on the stack, this program will crash
3709     # if the base pointer is used to access it because the
3710     # base pointer is cleared in the inline assembly code.
3711     check_exec_crash <<EOF && enable ebp_available
3712 volatile int i=0;
3713 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3714 return i;
3715 EOF
3716
3717     # check whether EBX is available on x86
3718     check_inline_asm ebx_available '""::"b"(0)' &&
3719         check_inline_asm ebx_available '"":::"%ebx"'
3720
3721     # check whether xmm clobbers are supported
3722     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3723
3724     # check whether binutils is new enough to compile SSSE3/MMXEXT
3725     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3726     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3727
3728     if ! disabled_any asm mmx yasm; then
3729         if check_cmd $yasmexe --version; then
3730             enabled x86_64 && yasm_extra="-m amd64"
3731             yasm_debug="-g dwarf2"
3732         elif check_cmd nasm -v; then
3733             yasmexe=nasm
3734             yasm_debug="-g -F dwarf"
3735             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3736         fi
3737
3738         YASMFLAGS="-f $objformat $yasm_extra"
3739         enabled pic               && append YASMFLAGS "-DPIC"
3740         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
3741         case "$objformat" in
3742             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
3743         esac
3744
3745         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
3746             die "yasm not found, use --disable-yasm for a crippled build"
3747         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external
3748         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
3749         check_yasm "CPU amdnop" && enable cpunop
3750     fi
3751
3752     case "$cpu" in
3753         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
3754             disable fast_clz
3755         ;;
3756     esac
3757
3758 fi
3759
3760 if enabled asm; then
3761     as=${gas:=$as}
3762     check_as <<EOF && enable gnu_as || \
3763         $nogas "GNU assembler not found, install gas-preprocessor"
3764 .macro m n
3765 \n: .int 0
3766 .endm
3767 m x
3768 EOF
3769 fi
3770
3771 check_ldflags -Wl,--as-needed
3772
3773 if check_func dlopen; then
3774     ldl=
3775 elif check_func dlopen -ldl; then
3776     ldl=-ldl
3777 fi
3778
3779 if ! disabled network; then
3780     check_type "sys/types.h sys/socket.h" socklen_t
3781     check_type netdb.h "struct addrinfo"
3782     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
3783     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
3784     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
3785     check_type netinet/in.h "struct sockaddr_in6"
3786     check_type poll.h "struct pollfd"
3787     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
3788     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
3789     check_type netinet/sctp.h "struct sctp_event_subscribe"
3790     check_func getaddrinfo $network_extralibs
3791     check_func getservbyport $network_extralibs
3792     # Prefer arpa/inet.h over winsock2
3793     if check_header arpa/inet.h ; then
3794         check_func closesocket
3795     elif check_header winsock2.h ; then
3796         check_func_headers winsock2.h closesocket -lws2 &&
3797             network_extralibs="-lws2" ||
3798         { check_func_headers winsock2.h closesocket -lws2_32 &&
3799             network_extralibs="-lws2_32"; }
3800         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
3801         check_type ws2tcpip.h socklen_t
3802         check_type ws2tcpip.h "struct addrinfo"
3803         check_type ws2tcpip.h "struct group_source_req"
3804         check_type ws2tcpip.h "struct ip_mreq_source"
3805         check_type ws2tcpip.h "struct ipv6_mreq"
3806         check_type winsock2.h "struct pollfd"
3807         check_type ws2tcpip.h "struct sockaddr_in6"
3808         check_type ws2tcpip.h "struct sockaddr_storage"
3809         check_struct winsock2.h "struct sockaddr" sa_len
3810     else
3811         disable network
3812     fi
3813 fi
3814
3815 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
3816 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
3817
3818 check_func  access
3819 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
3820 check_func  fcntl
3821 check_func  fork
3822 check_func  gethrtime
3823 check_func  getopt
3824 check_func  getrusage
3825 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
3826 check_func  gettimeofday
3827 check_func  inet_aton $network_extralibs
3828 check_func  isatty
3829 check_func  localtime_r
3830 check_func  ${malloc_prefix}memalign            && enable memalign
3831 check_func  mkstemp
3832 check_func  mmap
3833 check_func  mprotect
3834 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
3835 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
3836 check_func  setrlimit
3837 check_func  strerror_r
3838 check_func  sched_getaffinity
3839 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
3840 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
3841 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
3842 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
3843 check_func  sysconf
3844 check_func  sysctl
3845 check_func  usleep
3846 check_func_headers conio.h kbhit
3847 check_func_headers windows.h PeekNamedPipe
3848 check_func_headers io.h setmode
3849 check_func_headers lzo/lzo1x.h lzo1x_999_compress
3850 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
3851 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
3852 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
3853 check_func_headers windows.h GetProcessAffinityMask
3854 check_func_headers windows.h GetProcessTimes
3855 check_func_headers windows.h GetSystemTimeAsFileTime
3856 check_func_headers windows.h MapViewOfFile
3857 check_func_headers windows.h SetConsoleTextAttribute
3858 check_func_headers windows.h Sleep
3859 check_func_headers windows.h VirtualAlloc
3860 check_func_headers glob.h glob
3861
3862 check_header direct.h
3863 check_header dlfcn.h
3864 check_header dxva.h
3865 check_header dxva2api.h -D_WIN32_WINNT=0x0600
3866 check_header io.h
3867 check_header libcrystalhd/libcrystalhd_if.h
3868 check_header malloc.h
3869 check_header poll.h
3870 check_header sys/mman.h
3871 check_header sys/param.h
3872 check_header sys/resource.h
3873 check_header sys/select.h
3874 check_header sys/time.h
3875 check_header termios.h
3876 check_header unistd.h
3877 check_header vdpau/vdpau.h
3878 check_header vdpau/vdpau_x11.h
3879 check_header VideoDecodeAcceleration/VDADecoder.h
3880 check_header windows.h
3881 check_header X11/extensions/XvMClib.h
3882 check_header asm/types.h
3883
3884 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
3885 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
3886
3887 if ! disabled w32threads && ! enabled pthreads; then
3888     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
3889 fi
3890
3891 # check for some common methods of building with pthread support
3892 # do this before the optional library checks as some of them require pthreads
3893 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
3894     enable pthreads
3895     if check_func pthread_create; then
3896         :
3897     elif check_func pthread_create -pthread; then
3898         add_cflags -pthread
3899         add_extralibs -pthread
3900     elif check_func pthread_create -pthreads; then
3901         add_cflags -pthreads
3902         add_extralibs -pthreads
3903     elif check_func pthread_create -lpthreadGC2; then
3904         add_extralibs -lpthreadGC2
3905     elif ! check_lib pthread.h pthread_create -lpthread; then
3906         disable pthreads
3907     fi
3908 fi
3909
3910 for thread in $THREADS_LIST; do
3911     if enabled $thread; then
3912         test -n "$thread_type" &&
3913             die "ERROR: Only one thread type must be selected." ||
3914             thread_type="$thread"
3915     fi
3916 done
3917
3918 if enabled pthreads; then
3919   check_func pthread_cancel
3920 fi
3921
3922 enabled sync_val_compare_and_swap && enable atomics_gcc
3923 enabled machine_rw_barrier && enabled atomic_cas_ptr && enable atomics_suncc
3924 enabled MemoryBarrier && enable atomics_win32
3925
3926 check_lib math.h sin -lm && LIBM="-lm"
3927 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
3928 enabled vaapi && require vaapi va/va.h vaInitialize -lva
3929
3930 atan2f_args=2
3931 ldexpf_args=2
3932 powf_args=2
3933
3934 for func in $MATH_FUNCS; do
3935     eval check_mathfunc $func \${${func}_args:-1}
3936 done
3937
3938 # these are off by default, so fail if requested and not available
3939 enabled avisynth   && { { check_lib2 "windows.h" LoadLibrary; } ||
3940                         { check_lib2 "dlfcn.h" dlopen -ldl; } ||
3941                         die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
3942 enabled fontconfig && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
3943 enabled frei0r     && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
3944 enabled gnutls     && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
3945 enabled libiec61883 && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
3946 enabled libaacplus && require  "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
3947 enabled libass     && require_pkg_config libass ass/ass.h ass_library_init
3948 enabled libbluray  && require libbluray libbluray/bluray.h bd_open -lbluray
3949 enabled libcelt    && require libcelt celt/celt.h celt_decode -lcelt0 &&
3950                       { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
3951                         die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
3952 enabled libcaca    && require_pkg_config caca caca.h caca_create_canvas
3953 enabled libfaac    && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
3954 enabled libfdk_aac && require  libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
3955 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"
3956 enabled libflite   && require2 libflite "flite/flite.h" flite_init $flite_libs
3957 enabled libfreetype && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
3958 enabled libgsm     && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
3959                             check_lib "${gsm_hdr}" gsm_create -lgsm && break;
3960                         done || die "ERROR: libgsm not found"; }
3961 enabled libilbc    && require  libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
3962 enabled libmodplug && require  libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
3963 enabled libmp3lame && require  "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
3964 enabled libnut     && require  libnut libnut.h nut_demuxer_init -lnut
3965 enabled libopencore_amrnb  && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
3966 enabled libopencore_amrwb  && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
3967 enabled libopencv  && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
3968 enabled libopenjpeg && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg ||
3969                          check_lib openjpeg.h opj_version -lopenjpeg ||
3970                          die "ERROR: libopenjpeg not found"; }
3971 enabled libopus    && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
3972 enabled libpulse && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
3973 enabled librtmp    && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
3974 enabled libschroedinger && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
3975 enabled libsoxr    && require  libsoxr soxr.h soxr_create -lsoxr
3976 enabled libspeex   && require  libspeex speex/speex.h speex_decoder_init -lspeex
3977 enabled libstagefright_h264  && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
3978     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
3979     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
3980 enabled libtheora  && require  libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
3981 enabled libtwolame && require  libtwolame twolame.h twolame_init -ltwolame &&
3982                       { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
3983                         die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
3984 enabled libutvideo    && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
3985 enabled libv4l2    && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
3986 enabled libvo_aacenc && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
3987 enabled libvo_amrwbenc && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
3988 enabled libvorbis  && require  libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
3989 enabled libvpx     && {
3990     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
3991                                 die "ERROR: libvpx decoder version must be >=0.9.1"; }
3992     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 ||
3993                                 die "ERROR: libvpx encoder version must be >=0.9.7"; }
3994     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder;  }
3995     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
3996 enabled libx264    && require  libx264 x264.h x264_encoder_encode -lx264 &&
3997                       { check_cpp_condition x264.h "X264_BUILD >= 118" ||
3998                         die "ERROR: libx264 must be installed and version must be >= 0.118."; }
3999 enabled libxavs    && require  libxavs xavs.h xavs_encoder_encode -lxavs
4000 enabled libxvid    && require  libxvid xvid.h xvid_global -lxvidcore
4001 enabled openal     && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4002                         check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4003                         die "ERROR: openal not found"; } &&
4004                       { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4005                         die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4006 enabled opencl     && require2 opencl CL/cl.h clEnqueueNDRangeKernel -lOpenCL
4007 enabled openssl    && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4008                         check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4009                         check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4010                         die "ERROR: openssl not found"; }
4011
4012 if enabled gnutls; then
4013     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4014     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4015 fi
4016
4017 # libdc1394 check
4018 if enabled libdc1394; then
4019    &nb