configure: abort if threading without atomics is used
[ffmpeg.git] / configure
1 #!/bin/sh
2 #
3 # FFmpeg configure script
4 #
5 # Copyright (c) 2000-2002 Fabrice Bellard
6 # Copyright (c) 2005-2008 Diego Biurrun
7 # Copyright (c) 2005-2008 Mans Rullgard
8 #
9
10 # Prevent locale nonsense from breaking basic text processing.
11 LC_ALL=C
12 export LC_ALL
13
14 # make sure we are running under a compatible shell
15 # try to make this part work with most shells
16
17 try_exec(){
18     echo "Trying shell $1"
19     type "$1" > /dev/null 2>&1 && exec "$@"
20 }
21
22 unset foo
23 (: ${foo%%bar}) 2> /dev/null
24 E1="$?"
25
26 (: ${foo?}) 2> /dev/null
27 E2="$?"
28
29 if test "$E1" != 0 || test "$E2" = 0; then
30     echo "Broken shell detected.  Trying alternatives."
31     export FF_CONF_EXEC
32     if test "0$FF_CONF_EXEC" -lt 1; then
33         FF_CONF_EXEC=1
34         try_exec bash "$0" "$@"
35     fi
36     if test "0$FF_CONF_EXEC" -lt 2; then
37         FF_CONF_EXEC=2
38         try_exec ksh "$0" "$@"
39     fi
40     if test "0$FF_CONF_EXEC" -lt 3; then
41         FF_CONF_EXEC=3
42         try_exec /usr/xpg4/bin/sh "$0" "$@"
43     fi
44     echo "No compatible shell script interpreter found."
45     echo "This configure script requires a POSIX-compatible shell"
46     echo "such as bash or ksh."
47     echo "THIS IS NOT A BUG IN FFMPEG, DO NOT REPORT IT AS SUCH."
48     echo "Instead, install a working POSIX-compatible shell."
49     echo "Disabling this configure test will create a broken FFmpeg."
50     if test "$BASH_VERSION" = '2.04.0(1)-release'; then
51         echo "This bash version ($BASH_VERSION) is broken on your platform."
52         echo "Upgrade to a later version if available."
53     fi
54     exit 1
55 fi
56
57 test -d /usr/xpg4/bin && PATH=/usr/xpg4/bin:$PATH
58
59 show_help(){
60     cat <<EOF
61 Usage: configure [options]
62 Options: [defaults in brackets after descriptions]
63
64 Help options:
65   --help                   print this message
66   --list-decoders          show all available decoders
67   --list-encoders          show all available encoders
68   --list-hwaccels          show all available hardware accelerators
69   --list-demuxers          show all available demuxers
70   --list-muxers            show all available muxers
71   --list-parsers           show all available parsers
72   --list-protocols         show all available protocols
73   --list-bsfs              show all available bitstream filters
74   --list-indevs            show all available input devices
75   --list-outdevs           show all available output devices
76   --list-filters           show all available filters
77
78 Standard options:
79   --logfile=FILE           log tests and output to FILE [config.log]
80   --disable-logging        do not log configure debug information
81   --fatal-warnings         fail if any configure warning is generated
82   --prefix=PREFIX          install in PREFIX [$prefix]
83   --bindir=DIR             install binaries in DIR [PREFIX/bin]
84   --datadir=DIR            install data files in DIR [PREFIX/share/ffmpeg]
85   --docdir=DIR             install documentation in DIR [PREFIX/share/doc/ffmpeg]
86   --libdir=DIR             install libs in DIR [PREFIX/lib]
87   --shlibdir=DIR           install shared libs in DIR [PREFIX/lib]
88   --incdir=DIR             install includes in DIR [PREFIX/include]
89   --mandir=DIR             install man page in DIR [PREFIX/share/man]
90
91 Licensing options:
92   --enable-gpl             allow use of GPL code, the resulting libs
93                            and binaries will be under GPL [no]
94   --enable-version3        upgrade (L)GPL to version 3 [no]
95   --enable-nonfree         allow use of nonfree code, the resulting libs
96                            and binaries will be unredistributable [no]
97
98 Configuration options:
99   --disable-static         do not build static libraries [no]
100   --enable-shared          build shared libraries [no]
101   --enable-small           optimize for size instead of speed
102   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
103   --enable-gray            enable full grayscale support (slower color)
104   --disable-swscale-alpha  disable alpha channel support in swscale
105   --disable-all            disable building components, libraries and programs
106   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
107   --enable-incompatible-fork-abi  enable incompatible Libav fork ABI (deprecated) [no]
108
109 Program options:
110   --disable-programs       do not build command line programs
111   --disable-ffmpeg         disable ffmpeg build
112   --disable-ffplay         disable ffplay build
113   --disable-ffprobe        disable ffprobe build
114   --disable-ffserver       disable ffserver build
115
116 Documentation options:
117   --disable-doc            do not build documentation
118   --disable-htmlpages      do not build HTML documentation pages
119   --disable-manpages       do not build man documentation pages
120   --disable-podpages       do not build POD documentation pages
121   --disable-txtpages       do not build text documentation pages
122
123 Component options:
124   --disable-avdevice       disable libavdevice build
125   --disable-avcodec        disable libavcodec build
126   --disable-avformat       disable libavformat build
127   --disable-avutil         disable libavutil build
128   --disable-swresample     disable libswresample build
129   --disable-swscale        disable libswscale build
130   --disable-postproc       disable libpostproc build
131   --disable-avfilter       disable libavfilter build
132   --enable-avresample      enable libavresample build [no]
133   --disable-pthreads       disable pthreads [auto]
134   --disable-w32threads     disable Win32 threads [auto]
135   --disable-os2threads     disable OS/2 threads [auto]
136   --disable-network        disable network support [no]
137   --disable-dct            disable DCT code
138   --disable-dwt            disable DWT code
139   --disable-error-resilience disable error resilience code
140   --disable-lsp            disable LSP code
141   --disable-lzo            disable LZO decoder code
142   --disable-mdct           disable MDCT code
143   --disable-rdft           disable RDFT code
144   --disable-fft            disable FFT code
145
146 Hardware accelerators:
147   --disable-dxva2          disable DXVA2 code [autodetect]
148   --disable-vaapi          disable VAAPI code [autodetect]
149   --enable-vda             enable VDA code
150   --disable-vdpau          disable VDPAU code [autodetect]
151
152 Individual component options:
153   --disable-everything     disable all components listed below
154   --disable-encoder=NAME   disable encoder NAME
155   --enable-encoder=NAME    enable encoder NAME
156   --disable-encoders       disable all encoders
157   --disable-decoder=NAME   disable decoder NAME
158   --enable-decoder=NAME    enable decoder NAME
159   --disable-decoders       disable all decoders
160   --disable-hwaccel=NAME   disable hwaccel NAME
161   --enable-hwaccel=NAME    enable hwaccel NAME
162   --disable-hwaccels       disable all hwaccels
163   --disable-muxer=NAME     disable muxer NAME
164   --enable-muxer=NAME      enable muxer NAME
165   --disable-muxers         disable all muxers
166   --disable-demuxer=NAME   disable demuxer NAME
167   --enable-demuxer=NAME    enable demuxer NAME
168   --disable-demuxers       disable all demuxers
169   --enable-parser=NAME     enable parser NAME
170   --disable-parser=NAME    disable parser NAME
171   --disable-parsers        disable all parsers
172   --enable-bsf=NAME        enable bitstream filter NAME
173   --disable-bsf=NAME       disable bitstream filter NAME
174   --disable-bsfs           disable all bitstream filters
175   --enable-protocol=NAME   enable protocol NAME
176   --disable-protocol=NAME  disable protocol NAME
177   --disable-protocols      disable all protocols
178   --enable-indev=NAME      enable input device NAME
179   --disable-indev=NAME     disable input device NAME
180   --disable-indevs         disable input devices
181   --enable-outdev=NAME     enable output device NAME
182   --disable-outdev=NAME    disable output device NAME
183   --disable-outdevs        disable output devices
184   --disable-devices        disable all devices
185   --enable-filter=NAME     enable filter NAME
186   --disable-filter=NAME    disable filter NAME
187   --disable-filters        disable all filters
188
189 External library support:
190   --enable-avisynth        enable reading of AviSynth script files [no]
191   --disable-bzlib          disable bzlib [autodetect]
192   --enable-fontconfig      enable fontconfig
193   --enable-frei0r          enable frei0r video filtering
194   --enable-gnutls          enable gnutls [no]
195   --disable-iconv          disable iconv [autodetect]
196   --enable-ladspa          enable LADSPA audio filtering
197   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
198   --enable-libass          enable libass subtitles rendering [no]
199   --enable-libbluray       enable BluRay reading using libbluray [no]
200   --enable-libcaca         enable textual display using libcaca
201   --enable-libcelt         enable CELT decoding via libcelt [no]
202   --enable-libcdio         enable audio CD grabbing with libcdio
203   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
204                            and libraw1394 [no]
205   --enable-libfaac         enable AAC encoding via libfaac [no]
206   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
207   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
208   --enable-libfreetype     enable libfreetype [no]
209   --enable-libgme          enable Game Music Emu via libgme [no]
210   --enable-libgsm          enable GSM de/encoding via libgsm [no]
211   --enable-libiec61883     enable iec61883 via libiec61883 [no]
212   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
213   --enable-libmodplug      enable ModPlug via libmodplug [no]
214   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
215   --enable-libnut          enable NUT (de)muxing via libnut,
216                            native (de)muxer exists [no]
217   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
218   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
219   --enable-libopencv       enable video filtering via libopencv [no]
220   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
221   --enable-libopus         enable Opus decoding via libopus [no]
222   --enable-libpulse        enable Pulseaudio input via libpulse [no]
223   --enable-libquvi         enable quvi input via libquvi [no]
224   --enable-librtmp         enable RTMP[E] support via librtmp [no]
225   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
226   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
227   --enable-libsoxr         enable Include libsoxr resampling [no]
228   --enable-libspeex        enable Speex de/encoding via libspeex [no]
229   --enable-libssh          enable SFTP protocol via libssh [no]
230   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
231   --enable-libtheora       enable Theora encoding via libtheora [no]
232   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
233   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
234   --enable-libv4l2         enable libv4l2/v4l-utils [no]
235   --enable-libvidstab      enable video stabilization using vid.stab [no]
236   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
237   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
238   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
239                            native implementation exists [no]
240   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
241   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
242   --enable-libx264         enable H.264 encoding via x264 [no]
243   --enable-libxavs         enable AVS encoding via xavs [no]
244   --enable-libxvid         enable Xvid encoding via xvidcore,
245                            native MPEG-4/Xvid encoder exists [no]
246   --enable-libzmq          enable message passing via libzmq [no]
247   --enable-libzvbi         enable teletext support via libzvbi [no]
248   --enable-openal          enable OpenAL 1.1 capture support [no]
249   --enable-opencl          enable OpenCL code
250   --enable-openssl         enable openssl [no]
251   --enable-x11grab         enable X11 grabbing [no]
252   --disable-zlib           disable zlib [autodetect]
253
254 Advanced options (experts only):
255   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
256   --enable-cross-compile   assume a cross-compiler is used
257   --sysroot=PATH           root of cross-build tree
258   --sysinclude=PATH        location of cross-build system headers
259   --target-os=OS           compiler targets OS [$target_os]
260   --target-exec=CMD        command to run executables on target
261   --target-path=DIR        path to view of build directory on target
262   --target-samples=DIR     path to samples directory on target
263   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
264   --toolchain=NAME         set tool defaults according to NAME
265   --nm=NM                  use nm tool NM [$nm_default]
266   --ar=AR                  use archive tool AR [$ar_default]
267   --as=AS                  use assembler AS [$as_default]
268   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
269   --cc=CC                  use C compiler CC [$cc_default]
270   --cxx=CXX                use C compiler CXX [$cxx_default]
271   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
272   --ld=LD                  use linker LD [$ld_default]
273   --host-cc=HOSTCC         use host C compiler HOSTCC
274   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
275   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
276   --host-ld=HOSTLD         use host linker HOSTLD
277   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
278   --host-libs=HLIBS        use libs HLIBS when linking for host
279   --host-os=OS             compiler host OS [$target_os]
280   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
281   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
282   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
283   --extra-libs=ELIBS       add ELIBS [$ELIBS]
284   --extra-version=STRING   version string suffix []
285   --optflags=OPTFLAGS      override optimization-related compiler flags
286   --build-suffix=SUFFIX    library name suffix []
287   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
288   --progs-suffix=SUFFIX    program name suffix []
289   --arch=ARCH              select architecture [$arch]
290   --cpu=CPU                select the minimum required CPU (affects
291                            instruction selection, may crash on older CPUs)
292   --enable-pic             build position-independent code
293   --enable-sram            allow use of on-chip SRAM
294   --enable-thumb           compile for Thumb instruction set
295   --disable-symver         disable symbol versioning
296   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
297   --disable-safe-bitstream-reader
298                            disable buffer boundary checking in bitreaders
299                            (faster, but may crash)
300   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
301   --enable-lto             use link-time optimization
302
303 Optimization options (experts only):
304   --disable-asm            disable all assembler optimizations
305   --disable-altivec        disable AltiVec optimizations
306   --disable-amd3dnow       disable 3DNow! optimizations
307   --disable-amd3dnowext    disable 3DNow! extended optimizations
308   --disable-mmx            disable MMX optimizations
309   --disable-mmxext         disable MMXEXT optimizations
310   --disable-sse            disable SSE optimizations
311   --disable-sse2           disable SSE2 optimizations
312   --disable-sse3           disable SSE3 optimizations
313   --disable-ssse3          disable SSSE3 optimizations
314   --disable-sse4           disable SSE4 optimizations
315   --disable-sse42          disable SSE4.2 optimizations
316   --disable-avx            disable AVX optimizations
317   --disable-fma4           disable FMA4 optimizations
318   --disable-armv5te        disable armv5te optimizations
319   --disable-armv6          disable armv6 optimizations
320   --disable-armv6t2        disable armv6t2 optimizations
321   --disable-vfp            disable VFP optimizations
322   --disable-neon           disable NEON optimizations
323   --disable-vis            disable VIS optimizations
324   --disable-inline-asm     disable use of inline assembler
325   --disable-yasm           disable use of yasm assembler
326   --disable-mips32r2       disable MIPS32R2 optimizations
327   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
328   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
329   --disable-mipsfpu        disable floating point MIPS optimizations
330   --disable-fast-unaligned consider unaligned accesses slow
331
332 Developer options (useful when working on FFmpeg itself):
333   --disable-debug          disable debugging symbols
334   --enable-debug=LEVEL     set the debug level [$debuglevel]
335   --disable-optimizations  disable compiler optimizations
336   --enable-extra-warnings  enable more compiler warnings
337   --disable-stripping      disable stripping of executables and shared libraries
338   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
339                            2 causes a slowdown at runtime.
340   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
341   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
342                            leaks and errors, using the specified valgrind binary.
343                            Cannot be combined with --target-exec
344   --enable-ftrapv          Trap arithmetic overflows
345   --samples=PATH           location of test samples for FATE, if not set use
346                            \$FATE_SAMPLES at make invocation time.
347   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
348                            should be used only for debugging purposes)
349   --enable-random          randomly enable/disable components
350   --disable-random
351   --enable-random=LIST     randomly enable/disable specific components or
352   --disable-random=LIST    component groups. LIST is a comma-separated list
353                            of NAME[:PROB] entries where NAME is a component
354                            (group) and PROB the probability associated with
355                            NAME (default 0.5).
356   --random-seed=VALUE      seed value for --enable/disable-random
357
358 NOTE: Object files are built at the place where configure is launched.
359 EOF
360   exit 0
361 }
362
363 quotes='""'
364
365 log(){
366     echo "$@" >> $logfile
367 }
368
369 log_file(){
370     log BEGIN $1
371     pr -n -t $1 >> $logfile
372     log END $1
373 }
374
375 echolog(){
376     log "$@"
377     echo "$@"
378 }
379
380 warn(){
381     log "WARNING: $*"
382     WARNINGS="${WARNINGS}WARNING: $*\n"
383 }
384
385 die(){
386     echolog "$@"
387     cat <<EOF
388
389 If you think configure made a mistake, make sure you are using the latest
390 version from Git.  If the latest version fails, report the problem to the
391 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
392 EOF
393     if disabled logging; then
394         cat <<EOF
395 Rerun configure with logging enabled (do not use --disable-logging), and
396 include the log this produces with your report.
397 EOF
398     else
399         cat <<EOF
400 Include the log file "$logfile" produced by configure as this will help
401 solving the problem.
402 EOF
403     fi
404     exit 1
405 }
406
407 # Avoid locale weirdness, besides we really just want to translate ASCII.
408 toupper(){
409     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
410 }
411
412 tolower(){
413     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
414 }
415
416 c_escape(){
417     echo "$*" | sed 's/["\\]/\\\0/g'
418 }
419
420 sh_quote(){
421     v=$(echo "$1" | sed "s/'/'\\\\''/g")
422     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
423     echo "$v"
424 }
425
426 cleanws(){
427     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\r//g'
428 }
429
430 filter(){
431     pat=$1
432     shift
433     for v; do
434         eval "case $v in $pat) echo $v ;; esac"
435     done
436 }
437
438 filter_out(){
439     pat=$1
440     shift
441     for v; do
442         eval "case $v in $pat) ;; *) echo $v ;; esac"
443     done
444 }
445
446 map(){
447     m=$1
448     shift
449     for v; do eval $m; done
450 }
451
452 add_suffix(){
453     suffix=$1
454     shift
455     for v; do echo ${v}${suffix}; done
456 }
457
458 set_all(){
459     value=$1
460     shift
461     for var in $*; do
462         eval $var=$value
463     done
464 }
465
466 set_weak(){
467     value=$1
468     shift
469     for var; do
470         eval : \${$var:=$value}
471     done
472 }
473
474 sanitize_var_name(){
475     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
476 }
477
478 set_safe(){
479     var=$1
480     shift
481     eval $(sanitize_var_name "$var")='$*'
482 }
483
484 get_safe(){
485     eval echo \$$(sanitize_var_name "$1")
486 }
487
488 pushvar(){
489     for pvar in $*; do
490         eval level=\${${pvar}_level:=0}
491         eval ${pvar}_${level}="\$$pvar"
492         eval ${pvar}_level=$(($level+1))
493     done
494 }
495
496 popvar(){
497     for pvar in $*; do
498         eval level=\${${pvar}_level:-0}
499         test $level = 0 && continue
500         eval level=$(($level-1))
501         eval $pvar="\${${pvar}_${level}}"
502         eval ${pvar}_level=$level
503         eval unset ${pvar}_${level}
504     done
505 }
506
507 enable(){
508     set_all yes $*
509 }
510
511 disable(){
512     set_all no $*
513 }
514
515 enable_weak(){
516     set_weak yes $*
517 }
518
519 disable_weak(){
520     set_weak no $*
521 }
522
523 enable_safe(){
524     for var; do
525         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
526     done
527 }
528
529 disable_safe(){
530     for var; do
531         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
532     done
533 }
534
535 do_enable_deep(){
536     for var; do
537         enabled $var && continue
538         eval sel="\$${var}_select"
539         eval sgs="\$${var}_suggest"
540         pushvar var sgs
541         enable_deep $sel
542         popvar sgs
543         enable_deep_weak $sgs
544         popvar var
545     done
546 }
547
548 enable_deep(){
549     do_enable_deep $*
550     enable $*
551 }
552
553 enable_deep_weak(){
554     for var; do
555         disabled $var && continue
556         pushvar var
557         do_enable_deep $var
558         popvar var
559         enable_weak $var
560     done
561 }
562
563 enabled(){
564     test "${1#!}" = "$1" && op== || op=!=
565     eval test "x\$${1#!}" $op "xyes"
566 }
567
568 disabled(){
569     test "${1#!}" = "$1" && op== || op=!=
570     eval test "x\$${1#!}" $op "xno"
571 }
572
573 enabled_all(){
574     for opt; do
575         enabled $opt || return 1
576     done
577 }
578
579 disabled_all(){
580     for opt; do
581         disabled $opt || return 1
582     done
583 }
584
585 enabled_any(){
586     for opt; do
587         enabled $opt && return 0
588     done
589 }
590
591 disabled_any(){
592     for opt; do
593         disabled $opt && return 0
594     done
595     return 1
596 }
597
598 set_default(){
599     for opt; do
600         eval : \${$opt:=\$${opt}_default}
601     done
602 }
603
604 is_in(){
605     value=$1
606     shift
607     for var in $*; do
608         [ $var = $value ] && return 0
609     done
610     return 1
611 }
612
613 do_check_deps(){
614     for cfg; do
615         cfg="${cfg#!}"
616         enabled ${cfg}_checking && die "Circular dependency for $cfg."
617         disabled ${cfg}_checking && continue
618         enable ${cfg}_checking
619         append allopts $cfg
620
621         eval dep_all="\$${cfg}_deps"
622         eval dep_any="\$${cfg}_deps_any"
623         eval dep_sel="\$${cfg}_select"
624         eval dep_sgs="\$${cfg}_suggest"
625         eval dep_ifa="\$${cfg}_if"
626         eval dep_ifn="\$${cfg}_if_any"
627
628         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
629         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
630         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
631
632         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
633         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
634         enabled_all  $dep_all || disable $cfg
635         enabled_any  $dep_any || disable $cfg
636         disabled_any $dep_sel && disable $cfg
637
638         if enabled $cfg; then
639             enable_deep $dep_sel
640             enable_deep_weak $dep_sgs
641         fi
642
643         disable ${cfg}_checking
644     done
645 }
646
647 check_deps(){
648     unset allopts
649
650     do_check_deps "$@"
651
652     for cfg in $allopts; do
653         enabled $cfg || continue
654         eval dep_extralibs="\$${cfg}_extralibs"
655         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
656     done
657 }
658
659 print_config(){
660     pfx=$1
661     files=$2
662     shift 2
663     map 'eval echo "$v \${$v:-no}"' "$@" |
664     awk "BEGIN { split(\"$files\", files) }
665         {
666             c = \"$pfx\" toupper(\$1);
667             v = \$2;
668             sub(/yes/, 1, v);
669             sub(/no/,  0, v);
670             for (f in files) {
671                 file = files[f];
672                 if (file ~ /\\.h\$/) {
673                     printf(\"#define %s %d\\n\", c, v) >>file;
674                 } else if (file ~ /\\.asm\$/) {
675                     printf(\"%%define %s %d\\n\", c, v) >>file;
676                 } else if (file ~ /\\.mak\$/) {
677                     n = -v ? \"\" : \"!\";
678                     printf(\"%s%s=yes\\n\", n, c) >>file;
679                 } else if (file ~ /\\.texi\$/) {
680                     pre = -v ? \"\" : \"@c \";
681                     yesno = \$2;
682                     c2 = tolower(c);
683                     gsub(/_/, \"-\", c2);
684                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
685                 }
686             }
687         }"
688 }
689
690 print_enabled(){
691     suf=$1
692     shift
693     for v; do
694         enabled $v && printf "%s\n" ${v%$suf};
695     done
696 }
697
698 append(){
699     var=$1
700     shift
701     eval "$var=\"\$$var $*\""
702 }
703
704 prepend(){
705     var=$1
706     shift
707     eval "$var=\"$* \$$var\""
708 }
709
710 add_cppflags(){
711     append CPPFLAGS "$@"
712 }
713
714 add_cflags(){
715     append CFLAGS $($cflags_filter "$@")
716 }
717
718 add_cxxflags(){
719     append CXXFLAGS $($cflags_filter "$@")
720 }
721
722 add_asflags(){
723     append ASFLAGS $($asflags_filter "$@")
724 }
725
726 add_ldflags(){
727     append LDFLAGS $($ldflags_filter "$@")
728 }
729
730 add_extralibs(){
731     prepend extralibs $($ldflags_filter "$@")
732 }
733
734 add_host_cppflags(){
735     append host_cppflags "$@"
736 }
737
738 add_host_cflags(){
739     append host_cflags $($host_cflags_filter "$@")
740 }
741
742 add_host_ldflags(){
743     append host_ldflags $($host_ldflags_filter "$@")
744 }
745
746 add_compat(){
747     append compat_objs $1
748     shift
749     map 'add_cppflags -D$v' "$@"
750 }
751
752 check_cmd(){
753     log "$@"
754     "$@" >> $logfile 2>&1
755 }
756
757 cc_o(){
758     eval printf '%s\\n' $CC_O
759 }
760
761 cc_e(){
762     eval printf '%s\\n' $CC_E
763 }
764
765 check_cc(){
766     log check_cc "$@"
767     cat > $TMPC
768     log_file $TMPC
769     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
770 }
771
772 check_cxx(){
773     log check_cxx "$@"
774     cat > $TMPCPP
775     log_file $TMPCPP
776     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
777 }
778
779 check_cpp(){
780     log check_cpp "$@"
781     cat > $TMPC
782     log_file $TMPC
783     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
784 }
785
786 as_o(){
787     eval printf '%s\\n' $AS_O
788 }
789
790 check_as(){
791     log check_as "$@"
792     cat > $TMPS
793     log_file $TMPS
794     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
795 }
796
797 check_inline_asm(){
798     log check_inline_asm "$@"
799     name="$1"
800     code="$2"
801     shift 2
802     disable $name
803     check_cc "$@" <<EOF && enable $name
804 void foo(void){ __asm__ volatile($code); }
805 EOF
806 }
807
808 check_insn(){
809     log check_insn "$@"
810     check_inline_asm ${1}_inline "\"$2\""
811     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
812 }
813
814 check_yasm(){
815     log check_yasm "$@"
816     echo "$1" > $TMPS
817     log_file $TMPS
818     shift 1
819     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
820 }
821
822 ld_o(){
823     eval printf '%s\\n' $LD_O
824 }
825
826 check_ld(){
827     log check_ld "$@"
828     type=$1
829     shift 1
830     flags=$(filter_out '-l*|*.so' $@)
831     libs=$(filter '-l*|*.so' $@)
832     check_$type $($cflags_filter $flags) || return
833     flags=$($ldflags_filter $flags)
834     libs=$($ldflags_filter $libs)
835     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
836 }
837
838 check_code(){
839     log check_code "$@"
840     check=$1
841     headers=$2
842     code=$3
843     shift 3
844     {
845         for hdr in $headers; do
846             echo "#include <$hdr>"
847         done
848         echo "int main(void) { $code; return 0; }"
849     } | check_$check "$@"
850 }
851
852 check_cppflags(){
853     log check_cppflags "$@"
854     check_cc "$@" <<EOF && append CPPFLAGS "$@"
855 int x;
856 EOF
857 }
858
859 check_cflags(){
860     log check_cflags "$@"
861     set -- $($cflags_filter "$@")
862     check_cc "$@" <<EOF && append CFLAGS "$@"
863 int x;
864 EOF
865 }
866
867 check_cxxflags(){
868     log check_cxxflags "$@"
869     set -- $($cflags_filter "$@")
870     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
871 int x;
872 EOF
873 }
874
875 test_ldflags(){
876     log test_ldflags "$@"
877     check_ld "cc" "$@" <<EOF
878 int main(void){ return 0; }
879 EOF
880 }
881
882 check_ldflags(){
883     log check_ldflags "$@"
884     test_ldflags "$@" && add_ldflags "$@"
885 }
886
887 check_header(){
888     log check_header "$@"
889     header=$1
890     shift
891     disable_safe $header
892     check_cpp "$@" <<EOF && enable_safe $header
893 #include <$header>
894 int x;
895 EOF
896 }
897
898 check_func(){
899     log check_func "$@"
900     func=$1
901     shift
902     disable $func
903     check_ld "cc" "$@" <<EOF && enable $func
904 extern int $func();
905 int main(void){ $func(); }
906 EOF
907 }
908
909 check_mathfunc(){
910     log check_mathfunc "$@"
911     func=$1
912     narg=$2
913     shift 2
914     test $narg = 2 && args="f, g" || args="f"
915     disable $func
916     check_ld "cc" "$@" <<EOF && enable $func
917 #include <math.h>
918 float foo(float f, float g) { return $func($args); }
919 int main(void){ return (int) foo; }
920 EOF
921 }
922
923 check_func_headers(){
924     log check_func_headers "$@"
925     headers=$1
926     funcs=$2
927     shift 2
928     {
929         for hdr in $headers; do
930             echo "#include <$hdr>"
931         done
932         for func in $funcs; do
933             echo "long check_$func(void) { return (long) $func; }"
934         done
935         echo "int main(void) { return 0; }"
936     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
937 }
938
939 check_class_headers_cpp(){
940     log check_class_headers_cpp "$@"
941     headers=$1
942     classes=$2
943     shift 2
944     {
945         for hdr in $headers; do
946             echo "#include <$hdr>"
947         done
948         echo "int main(void) { "
949         i=1
950         for class in $classes; do
951             echo "$class obj$i;"
952             i=$(expr $i + 1)
953         done
954         echo "return 0; }"
955     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
956 }
957
958 check_cpp_condition(){
959     log check_cpp_condition "$@"
960     header=$1
961     condition=$2
962     shift 2
963     check_cpp "$@" <<EOF
964 #include <$header>
965 #if !($condition)
966 #error "unsatisfied condition: $condition"
967 #endif
968 EOF
969 }
970
971 check_lib(){
972     log check_lib "$@"
973     header="$1"
974     func="$2"
975     shift 2
976     check_header $header && check_func $func "$@" && add_extralibs "$@"
977 }
978
979 check_lib2(){
980     log check_lib2 "$@"
981     headers="$1"
982     funcs="$2"
983     shift 2
984     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
985 }
986
987 check_lib_cpp(){
988     log check_lib_cpp "$@"
989     headers="$1"
990     classes="$2"
991     shift 2
992     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
993 }
994
995 check_pkg_config(){
996     log check_pkg_config "$@"
997     pkg="$1"
998     headers="$2"
999     funcs="$3"
1000     shift 3
1001     check_cmd $pkg_config --exists --print-errors $pkg || return
1002     pkg_cflags=$($pkg_config --cflags $pkg)
1003     pkg_libs=$($pkg_config --libs $pkg)
1004     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1005         set_safe ${pkg}_cflags $pkg_cflags   &&
1006         set_safe ${pkg}_libs   $pkg_libs
1007 }
1008
1009 check_exec(){
1010     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1011 }
1012
1013 check_exec_crash(){
1014     code=$(cat)
1015
1016     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1017     # are safe but may not be available everywhere.  Thus we use
1018     # raise(SIGTERM) instead.  The check is run in a subshell so we
1019     # can redirect the "Terminated" message from the shell.  SIGBUS
1020     # is not defined by standard C so it is used conditionally.
1021
1022     (check_exec "$@") >> $logfile 2>&1 <<EOF
1023 #include <signal.h>
1024 static void sighandler(int sig){
1025     raise(SIGTERM);
1026 }
1027 int foo(void){
1028     $code
1029 }
1030 int (*func_ptr)(void) = foo;
1031 int main(void){
1032     signal(SIGILL, sighandler);
1033     signal(SIGFPE, sighandler);
1034     signal(SIGSEGV, sighandler);
1035 #ifdef SIGBUS
1036     signal(SIGBUS, sighandler);
1037 #endif
1038     return func_ptr();
1039 }
1040 EOF
1041 }
1042
1043 check_type(){
1044     log check_type "$@"
1045     headers=$1
1046     type=$2
1047     shift 2
1048     disable_safe "$type"
1049     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1050 }
1051
1052 check_struct(){
1053     log check_struct "$@"
1054     headers=$1
1055     struct=$2
1056     member=$3
1057     shift 3
1058     disable_safe "${struct}_${member}"
1059     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1060         enable_safe "${struct}_${member}"
1061 }
1062
1063 check_builtin(){
1064     log check_builtin "$@"
1065     name=$1
1066     headers=$2
1067     builtin=$3
1068     shift 3
1069     disable "$name"
1070     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1071 }
1072
1073 require(){
1074     name="$1"
1075     header="$2"
1076     func="$3"
1077     shift 3
1078     check_lib $header $func "$@" || die "ERROR: $name not found"
1079 }
1080
1081 require2(){
1082     name="$1"
1083     headers="$2"
1084     func="$3"
1085     shift 3
1086     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1087 }
1088
1089 require_cpp(){
1090     name="$1"
1091     headers="$2"
1092     classes="$3"
1093     shift 3
1094     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1095 }
1096
1097 require_pkg_config(){
1098     pkg="$1"
1099     check_pkg_config "$@" || die "ERROR: $pkg not found"
1100     add_cflags    $(get_safe ${pkg}_cflags)
1101     add_extralibs $(get_safe ${pkg}_libs)
1102 }
1103
1104 hostcc_o(){
1105     eval printf '%s\\n' $HOSTCC_O
1106 }
1107
1108 check_host_cc(){
1109     log check_host_cc "$@"
1110     cat > $TMPC
1111     log_file $TMPC
1112     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1113 }
1114
1115 check_host_cppflags(){
1116     log check_host_cppflags "$@"
1117     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1118 int x;
1119 EOF
1120 }
1121
1122 check_host_cflags(){
1123     log check_host_cflags "$@"
1124     set -- $($host_cflags_filter "$@")
1125     check_host_cc "$@" <<EOF && append host_cflags "$@"
1126 int x;
1127 EOF
1128 }
1129
1130 apply(){
1131     file=$1
1132     shift
1133     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1134 }
1135
1136 cp_if_changed(){
1137     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1138     mkdir -p "$(dirname $2)"
1139     $cp_f "$1" "$2"
1140 }
1141
1142 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1143 # system-dependent things.
1144
1145 COMPONENT_LIST="
1146     bsfs
1147     decoders
1148     demuxers
1149     encoders
1150     filters
1151     hwaccels
1152     indevs
1153     muxers
1154     outdevs
1155     parsers
1156     protocols
1157 "
1158
1159 EXTERNAL_LIBRARY_LIST="
1160     avisynth
1161     bzlib
1162     crystalhd
1163     fontconfig
1164     frei0r
1165     gnutls
1166     iconv
1167     ladspa
1168     libaacplus
1169     libass
1170     libbluray
1171     libcaca
1172     libcdio
1173     libcelt
1174     libdc1394
1175     libfaac
1176     libfdk_aac
1177     libflite
1178     libfreetype
1179     libgme
1180     libgsm
1181     libiec61883
1182     libilbc
1183     libmodplug
1184     libmp3lame
1185     libnut
1186     libopencore_amrnb
1187     libopencore_amrwb
1188     libopencv
1189     libopenjpeg
1190     libopus
1191     libpulse
1192     libquvi
1193     librtmp
1194     libschroedinger
1195     libshine
1196     libsoxr
1197     libspeex
1198     libssh
1199     libstagefright_h264
1200     libtheora
1201     libtwolame
1202     libutvideo
1203     libv4l2
1204     libvidstab
1205     libvo_aacenc
1206     libvo_amrwbenc
1207     libvorbis
1208     libvpx
1209     libwavpack
1210     libx264
1211     libxavs
1212     libxvid
1213     libzmq
1214     libzvbi
1215     openal
1216     opencl
1217     openssl
1218     x11grab
1219     zlib
1220 "
1221
1222 DOCUMENT_LIST="
1223     doc
1224     htmlpages
1225     manpages
1226     podpages
1227     txtpages
1228 "
1229
1230 HWACCEL_LIST="
1231     dxva2
1232     vaapi
1233     vda
1234     vdpau
1235 "
1236
1237 LIBRARY_LIST="
1238     avcodec
1239     avdevice
1240     avfilter
1241     avformat
1242     avresample
1243     avutil
1244     postproc
1245     swresample
1246     swscale
1247 "
1248
1249 PROGRAM_LIST="
1250     ffplay
1251     ffprobe
1252     ffserver
1253     ffmpeg
1254 "
1255
1256 CONFIG_LIST="
1257     $COMPONENT_LIST
1258     $DOCUMENT_LIST
1259     $EXTERNAL_LIBRARY_LIST
1260     $HWACCEL_LIST
1261     $LIBRARY_LIST
1262     $PROGRAM_LIST
1263     dct
1264     dwt
1265     error_resilience
1266     fast_unaligned
1267     fft
1268     ftrapv
1269     gpl
1270     gray
1271     hardcoded_tables
1272     incompatible_libav_abi
1273     incompatible_fork_abi
1274     lsp
1275     lzo
1276     mdct
1277     memalign_hack
1278     memory_poisoning
1279     network
1280     nonfree
1281     pic
1282     rdft
1283     runtime_cpudetect
1284     safe_bitstream_reader
1285     shared
1286     small
1287     sram
1288     static
1289     swscale_alpha
1290     thumb
1291     version3
1292     xmm_clobber_test
1293 "
1294
1295 THREADS_LIST='
1296     pthreads
1297     w32threads
1298     os2threads
1299 '
1300
1301 ATOMICS_LIST='
1302     atomics_gcc
1303     atomics_suncc
1304     atomics_win32
1305 '
1306
1307 ARCH_LIST='
1308     aarch64
1309     alpha
1310     arm
1311     avr32
1312     avr32_ap
1313     avr32_uc
1314     bfin
1315     ia64
1316     m68k
1317     mips
1318     mips64
1319     parisc
1320     ppc
1321     ppc64
1322     s390
1323     sh4
1324     sparc
1325     sparc64
1326     tilegx
1327     tilepro
1328     tomi
1329     x86
1330     x86_32
1331     x86_64
1332 '
1333
1334 ARCH_EXT_LIST_ARM='
1335     armv5te
1336     armv6
1337     armv6t2
1338     neon
1339     vfp
1340     vfpv3
1341 '
1342
1343 ARCH_EXT_LIST_X86='
1344     amd3dnow
1345     amd3dnowext
1346     avx
1347     fma4
1348     i686
1349     mmx
1350     mmxext
1351     sse
1352     sse2
1353     sse3
1354     sse4
1355     sse42
1356     ssse3
1357 '
1358
1359 ARCH_EXT_LIST="
1360     $ARCH_EXT_LIST_ARM
1361     $ARCH_EXT_LIST_X86
1362     altivec
1363     ppc4xx
1364     vis
1365     mipsfpu
1366     mips32r2
1367     mipsdspr1
1368     mipsdspr2
1369 "
1370
1371 HAVE_LIST_CMDLINE='
1372     inline_asm
1373     symver
1374     yasm
1375 '
1376
1377 HAVE_LIST_PUB='
1378     bigendian
1379     fast_unaligned
1380     incompatible_libav_abi
1381     incompatible_fork_abi
1382 '
1383
1384 MATH_FUNCS="
1385     atanf
1386     atan2f
1387     cbrt
1388     cbrtf
1389     cosf
1390     exp2
1391     exp2f
1392     expf
1393     isinf
1394     isnan
1395     ldexpf
1396     llrint
1397     llrintf
1398     log2
1399     log2f
1400     log10f
1401     lrint
1402     lrintf
1403     powf
1404     rint
1405     round
1406     roundf
1407     sinf
1408     trunc
1409     truncf
1410 "
1411
1412 HAVE_LIST="
1413     $ARCH_EXT_LIST
1414     $(add_suffix _external $ARCH_EXT_LIST)
1415     $(add_suffix _inline   $ARCH_EXT_LIST)
1416     $HAVE_LIST_CMDLINE
1417     $HAVE_LIST_PUB
1418     $THREADS_LIST
1419     $ATOMICS_LIST
1420     $MATH_FUNCS
1421     access
1422     aligned_malloc
1423     aligned_stack
1424     alsa_asoundlib_h
1425     altivec_h
1426     arpa_inet_h
1427     asm_mod_q
1428     asm_mod_y
1429     asm_types_h
1430     atomic_cas_ptr
1431     atomics_native
1432     attribute_may_alias
1433     attribute_packed
1434     cdio_paranoia_h
1435     cdio_paranoia_paranoia_h
1436     CL_cl_h
1437     clock_gettime
1438     closesocket
1439     CommandLineToArgvW
1440     cpunop
1441     CryptGenRandom
1442     dcbzl
1443     dev_bktr_ioctl_bt848_h
1444     dev_bktr_ioctl_meteor_h
1445     dev_ic_bt8xx_h
1446     dev_video_bktr_ioctl_bt848_h
1447     dev_video_meteor_ioctl_meteor_h
1448     direct_h
1449     dlfcn_h
1450     dlopen
1451     dos_paths
1452     dxva_h
1453     ebp_available
1454     ebx_available
1455     fast_64bit
1456     fast_clz
1457     fast_cmov
1458     fcntl
1459     fork
1460     getaddrinfo
1461     gethrtime
1462     getopt
1463     GetProcessAffinityMask
1464     GetProcessMemoryInfo
1465     GetProcessTimes
1466     GetSystemTimeAsFileTime
1467     getrusage
1468     getservbyport
1469     gettimeofday
1470     glob
1471     gnu_as
1472     gsm_h
1473     ibm_asm
1474     inet_aton
1475     io_h
1476     inline_asm_labels
1477     isatty
1478     jack_port_get_latency_range
1479     kbhit
1480     ldbrx
1481     libdc1394_1
1482     libdc1394_2
1483     local_aligned_16
1484     local_aligned_8
1485     localtime_r
1486     loongson
1487     lzo1x_999_compress
1488     machine_ioctl_bt848_h
1489     machine_ioctl_meteor_h
1490     machine_rw_barrier
1491     makeinfo
1492     malloc_h
1493     MapViewOfFile
1494     memalign
1495     MemoryBarrier
1496     mkstemp
1497     mm_empty
1498     mmap
1499     mprotect
1500     msvcrt
1501     nanosleep
1502     openjpeg_1_5_openjpeg_h
1503     PeekNamedPipe
1504     perl
1505     pod2man
1506     poll_h
1507     posix_memalign
1508     pragma_deprecated
1509     pthread_cancel
1510     rdtsc
1511     rsync_contimeout
1512     sarestart
1513     sched_getaffinity
1514     sdl
1515     SetConsoleTextAttribute
1516     setmode
1517     setrlimit
1518     Sleep
1519     sndio_h
1520     socklen_t
1521     soundcard_h
1522     strerror_r
1523     struct_addrinfo
1524     struct_group_source_req
1525     struct_ip_mreq_source
1526     struct_ipv6_mreq
1527     struct_pollfd
1528     struct_rusage_ru_maxrss
1529     struct_sctp_event_subscribe
1530     struct_sockaddr_in6
1531     struct_sockaddr_sa_len
1532     struct_sockaddr_storage
1533     struct_stat_st_mtim_tv_nsec
1534     struct_v4l2_frmivalenum_discrete
1535     symver_asm_label
1536     symver_gnu_asm
1537     sync_val_compare_and_swap
1538     sysconf
1539     sysctl
1540     sys_mman_h
1541     sys_param_h
1542     sys_resource_h
1543     sys_select_h
1544     sys_soundcard_h
1545     sys_time_h
1546     sys_un_h
1547     sys_videoio_h
1548     termios_h
1549     texi2html
1550     threads
1551     unistd_h
1552     usleep
1553     vfp_args
1554     VirtualAlloc
1555     windows_h
1556     winsock2_h
1557     xform_asm
1558     xmm_clobbers
1559 "
1560
1561 # options emitted with CONFIG_ prefix but not available on the command line
1562 CONFIG_EXTRA="
1563     aandcttables
1564     ac3dsp
1565     audio_frame_queue
1566     dsputil
1567     exif
1568     frame_thread_encoder
1569     gcrypt
1570     golomb
1571     gplv3
1572     h264chroma
1573     h264dsp
1574     h264pred
1575     h264qpel
1576     hpeldsp
1577     huffman
1578     lgplv3
1579     lpc
1580     mpegaudio
1581     mpegaudiodsp
1582     mpegvideo
1583     mpegvideoenc
1584     nettle
1585     rangecoder
1586     riffdec
1587     riffenc
1588     rtpdec
1589     rtpenc_chain
1590     sinewin
1591     videodsp
1592     vp3dsp
1593 "
1594
1595 CMDLINE_SELECT="
1596     $ARCH_EXT_LIST
1597     $CONFIG_LIST
1598     $HAVE_LIST_CMDLINE
1599     $THREADS_LIST
1600     asm
1601     cross_compile
1602     debug
1603     extra_warnings
1604     logging
1605     lto
1606     optimizations
1607     stripping
1608 "
1609
1610 PATHS_LIST='
1611     bindir
1612     datadir
1613     docdir
1614     incdir
1615     libdir
1616     mandir
1617     prefix
1618     shlibdir
1619 '
1620
1621 CMDLINE_SET="
1622     $PATHS_LIST
1623     ar
1624     arch
1625     as
1626     assert_level
1627     build_suffix
1628     cc
1629     cpu
1630     cross_prefix
1631     cxx
1632     dep_cc
1633     extra_version
1634     host_cc
1635     host_cflags
1636     host_ld
1637     host_ldflags
1638     host_libs
1639     host_os
1640     install
1641     ld
1642     logfile
1643     malloc_prefix
1644     nm
1645     optflags
1646     pkg_config
1647     progs_suffix
1648     random_seed
1649     samples
1650     strip
1651     sysinclude
1652     sysroot
1653     target_exec
1654     target_os
1655     target_path
1656     target_samples
1657     tempprefix
1658     toolchain
1659     valgrind
1660     yasmexe
1661 "
1662
1663 CMDLINE_APPEND="
1664     extra_cflags
1665     extra_cxxflags
1666     host_cppflags
1667 "
1668
1669 # code dependency declarations
1670
1671 # architecture extensions
1672
1673 armv5te_deps="arm"
1674 armv6_deps="arm"
1675 armv6t2_deps="arm"
1676 neon_deps="arm"
1677 vfp_deps="arm"
1678 vfpv3_deps="vfp"
1679
1680 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1681
1682 mipsfpu_deps="mips"
1683 mips32r2_deps="mips"
1684 mipsdspr1_deps="mips"
1685 mipsdspr2_deps="mips"
1686
1687 altivec_deps="ppc"
1688 ppc4xx_deps="ppc"
1689
1690 vis_deps="sparc"
1691
1692 cpunop_deps="i686"
1693 x86_64_select="i686"
1694 x86_64_suggest="fast_cmov"
1695
1696 amd3dnow_deps="mmx"
1697 amd3dnowext_deps="amd3dnow"
1698 mmx_deps="x86"
1699 mmxext_deps="mmx"
1700 sse_deps="mmxext"
1701 sse2_deps="sse"
1702 sse3_deps="sse2"
1703 ssse3_deps="sse3"
1704 sse4_deps="ssse3"
1705 sse42_deps="sse4"
1706 avx_deps="sse42"
1707 fma4_deps="avx"
1708
1709 mmx_external_deps="yasm"
1710 mmx_inline_deps="inline_asm"
1711 mmx_suggest="mmx_external mmx_inline"
1712
1713 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1714     eval dep=\$${ext}_deps
1715     eval ${ext}_external_deps='"${dep}_external"'
1716     eval ${ext}_inline_deps='"${dep}_inline"'
1717     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1718 done
1719
1720 aligned_stack_if_any="ppc x86"
1721 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1722 fast_clz_if_any="alpha avr32 mips ppc x86"
1723 fast_unaligned_if_any="ppc x86"
1724
1725 inline_asm_deps="!tms470"
1726 need_memalign="altivec neon sse"
1727
1728 symver_if_any="symver_asm_label symver_gnu_asm"
1729
1730 log2_deps="!msvcrt"
1731
1732 # subsystems
1733 dct_select="rdft"
1734 error_resilience_select="dsputil"
1735 frame_thread_encoder_deps="encoders threads"
1736 lpc_select="dsputil"
1737 mdct_select="fft"
1738 rdft_select="fft"
1739 mpegaudio_select="mpegaudiodsp"
1740 mpegaudiodsp_select="dct"
1741 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1742 mpegvideoenc_select="mpegvideo"
1743
1744 # decoders / encoders
1745 aac_decoder_select="mdct sinewin"
1746 aac_encoder_select="audio_frame_queue mdct sinewin"
1747 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1748 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1749 ac3_encoder_select="mdct ac3dsp dsputil"
1750 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1751 aic_decoder_select="dsputil golomb"
1752 alac_encoder_select="lpc"
1753 als_decoder_select="dsputil"
1754 amrnb_decoder_select="lsp"
1755 amrwb_decoder_select="lsp"
1756 amv_decoder_select="dsputil hpeldsp exif"
1757 amv_encoder_select="aandcttables"
1758 ape_decoder_select="dsputil"
1759 asv1_decoder_select="dsputil"
1760 asv1_encoder_select="dsputil"
1761 asv2_decoder_select="dsputil"
1762 asv2_encoder_select="dsputil"
1763 atrac1_decoder_select="mdct sinewin"
1764 atrac3_decoder_select="mdct"
1765 avrn_decoder_select="exif"
1766 bink_decoder_select="dsputil hpeldsp"
1767 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1768 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1769 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1770 cllc_decoder_select="dsputil"
1771 comfortnoise_encoder_select="lpc"
1772 cook_decoder_select="dsputil mdct sinewin"
1773 cscd_decoder_select="lzo"
1774 cscd_decoder_suggest="zlib"
1775 dca_decoder_select="mdct"
1776 dirac_decoder_select="dsputil dwt golomb videodsp"
1777 dnxhd_decoder_select="dsputil"
1778 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1779 dvvideo_decoder_select="dsputil"
1780 dvvideo_encoder_select="dsputil"
1781 dxa_decoder_select="zlib"
1782 eac3_decoder_select="ac3_decoder"
1783 eac3_encoder_select="ac3_encoder"
1784 eamad_decoder_select="aandcttables dsputil mpegvideo"
1785 eatgq_decoder_select="aandcttables"
1786 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1787 exr_decoder_select="zlib"
1788 ffv1_decoder_select="dsputil golomb rangecoder"
1789 ffv1_encoder_select="dsputil rangecoder"
1790 ffvhuff_decoder_select="dsputil"
1791 ffvhuff_encoder_select="dsputil huffman"
1792 flac_decoder_select="golomb"
1793 flac_encoder_select="dsputil golomb lpc"
1794 flashsv_decoder_select="zlib"
1795 flashsv_encoder_select="zlib"
1796 flashsv2_encoder_select="zlib"
1797 flashsv2_decoder_select="zlib"
1798 flv_decoder_select="h263_decoder"
1799 flv_encoder_select="h263_encoder"
1800 fourxm_decoder_select="dsputil"
1801 fraps_decoder_select="dsputil huffman"
1802 g2m_decoder_select="dsputil zlib"
1803 g729_decoder_select="dsputil"
1804 h261_decoder_select="error_resilience mpegvideo"
1805 h261_encoder_select="aandcttables mpegvideoenc"
1806 h263_decoder_select="error_resilience h263_parser mpegvideo"
1807 h263_encoder_select="aandcttables mpegvideoenc"
1808 h263i_decoder_select="h263_decoder"
1809 h263p_encoder_select="h263_encoder"
1810 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1811 h264_decoder_suggest="error_resilience"
1812 hevc_decoder_select="dsputil golomb videodsp"
1813 huffyuv_decoder_select="dsputil"
1814 huffyuv_encoder_select="dsputil huffman"
1815 iac_decoder_select="dsputil fft mdct sinewin"
1816 imc_decoder_select="dsputil fft mdct sinewin"
1817 indeo3_decoder_select="hpeldsp"
1818 interplay_video_decoder_select="hpeldsp"
1819 jpegls_decoder_select="dsputil golomb hpeldsp exif"
1820 jpegls_encoder_select="golomb"
1821 jv_decoder_select="dsputil"
1822 lagarith_decoder_select="dsputil"
1823 ljpeg_encoder_select="aandcttables mpegvideoenc"
1824 loco_decoder_select="golomb"
1825 mdec_decoder_select="dsputil error_resilience mpegvideo"
1826 metasound_decoder_select="lsp mdct sinewin"
1827 mimic_decoder_select="dsputil hpeldsp"
1828 mjpeg_decoder_select="dsputil hpeldsp exif"
1829 mjpegb_decoder_select="dsputil hpeldsp exif"
1830 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1831 mlp_decoder_select="dsputil mlp_parser"
1832 motionpixels_decoder_select="dsputil"
1833 mp1_decoder_select="mpegaudio"
1834 mp1float_decoder_select="mpegaudio"
1835 mp2_decoder_select="mpegaudio"
1836 mp2float_decoder_select="mpegaudio"
1837 mp3_decoder_select="mpegaudio"
1838 mp3adu_decoder_select="mpegaudio"
1839 mp3adufloat_decoder_select="mpegaudio"
1840 mp3float_decoder_select="mpegaudio"
1841 mp3on4_decoder_select="mpegaudio"
1842 mp3on4float_decoder_select="mpegaudio"
1843 mpc7_decoder_select="dsputil mpegaudiodsp"
1844 mpc8_decoder_select="dsputil mpegaudiodsp"
1845 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1846 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1847 mpeg1video_decoder_select="error_resilience mpegvideo"
1848 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1849 mpeg2video_decoder_select="error_resilience mpegvideo"
1850 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1851 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1852 mpeg4_encoder_select="h263_encoder"
1853 msmpeg4v1_decoder_select="h263_decoder"
1854 msmpeg4v2_decoder_select="h263_decoder"
1855 msmpeg4v2_encoder_select="h263_encoder"
1856 msmpeg4v3_decoder_select="h263_decoder"
1857 msmpeg4v3_encoder_select="h263_encoder"
1858 mss2_decoder_select="error_resilience vc1_decoder"
1859 mxpeg_decoder_select="dsputil hpeldsp exif"
1860 nellymoser_decoder_select="mdct sinewin"
1861 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1862 nuv_decoder_select="dsputil lzo"
1863 png_decoder_select="zlib"
1864 png_encoder_select="dsputil zlib"
1865 prores_decoder_select="dsputil"
1866 prores_encoder_select="dsputil"
1867 qcelp_decoder_select="lsp"
1868 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1869 ra_144_encoder_select="audio_frame_queue lpc"
1870 ralf_decoder_select="golomb"
1871 rtjpeg_decoder_select="dsputil"
1872 rv10_decoder_select="error_resilience h263_decoder"
1873 rv10_encoder_select="h263_encoder"
1874 rv20_decoder_select="error_resilience h263_decoder"
1875 rv20_encoder_select="h263_encoder"
1876 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1877 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1878 shorten_decoder_select="golomb"
1879 sipr_decoder_select="lsp"
1880 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
1881 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
1882 sonic_decoder_select="golomb"
1883 sonic_encoder_select="golomb"
1884 sonic_ls_encoder_select="golomb"
1885 sp5x_decoder_select="dsputil hpeldsp exif"
1886 svq1_decoder_select="hpeldsp"
1887 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1888 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1889 svq3_decoder_suggest="error_resilience zlib"
1890 tak_decoder_select="dsputil"
1891 theora_decoder_select="vp3_decoder"
1892 tiff_decoder_suggest="zlib"
1893 tiff_encoder_suggest="zlib"
1894 thp_decoder_select="dsputil hpeldsp exif"
1895 truehd_decoder_select="mlp_parser"
1896 truemotion2_decoder_select="dsputil"
1897 truespeech_decoder_select="dsputil"
1898 tscc_decoder_select="zlib"
1899 twinvq_decoder_select="mdct lsp sinewin"
1900 utvideo_decoder_select="dsputil"
1901 utvideo_encoder_select="dsputil huffman"
1902 vble_decoder_select="dsputil"
1903 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1904 vc1image_decoder_select="vc1_decoder"
1905 vorbis_decoder_select="mdct"
1906 vorbis_encoder_select="mdct"
1907 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1908 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1909 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1910 vp6a_decoder_select="vp6_decoder"
1911 vp6f_decoder_select="vp6_decoder"
1912 vp8_decoder_select="h264pred videodsp"
1913 vp9_decoder_select="videodsp"
1914 webp_decoder_select="vp8_decoder"
1915 wmapro_decoder_select="mdct sinewin"
1916 wmav1_decoder_select="mdct sinewin"
1917 wmav1_encoder_select="mdct sinewin"
1918 wmav2_decoder_select="mdct sinewin"
1919 wmav2_encoder_select="mdct sinewin"
1920 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1921 wmv1_decoder_select="h263_decoder"
1922 wmv1_encoder_select="h263_encoder"
1923 wmv2_decoder_select="h263_decoder videodsp"
1924 wmv2_encoder_select="h263_encoder"
1925 wmv3_decoder_select="vc1_decoder"
1926 wmv3image_decoder_select="wmv3_decoder"
1927 zerocodec_decoder_select="zlib"
1928 zlib_decoder_select="zlib"
1929 zlib_encoder_select="zlib"
1930 zmbv_decoder_select="zlib"
1931 zmbv_encoder_select="zlib"
1932
1933 # hardware accelerators
1934 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1935 dxva2_deps="dxva2api_h"
1936 vaapi_deps="va_va_h"
1937 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1938 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1939 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1940
1941 h263_vaapi_hwaccel_deps="vaapi"
1942 h263_vaapi_hwaccel_select="h263_decoder"
1943 h263_vdpau_hwaccel_deps="vdpau"
1944 h263_vdpau_hwaccel_select="h263_decoder"
1945 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1946 h264_dxva2_hwaccel_deps="dxva2"
1947 h264_dxva2_hwaccel_select="h264_decoder"
1948 h264_vaapi_hwaccel_deps="vaapi"
1949 h264_vaapi_hwaccel_select="h264_decoder"
1950 h264_vda_decoder_deps="vda"
1951 h264_vda_decoder_select="h264_decoder"
1952 h264_vda_hwaccel_deps="vda"
1953 h264_vda_hwaccel_select="h264_decoder"
1954 h264_vdpau_decoder_deps="vdpau"
1955 h264_vdpau_decoder_select="h264_decoder"
1956 h264_vdpau_hwaccel_deps="vdpau"
1957 h264_vdpau_hwaccel_select="h264_decoder"
1958 mpeg_vdpau_decoder_deps="vdpau"
1959 mpeg_vdpau_decoder_select="mpeg2video_decoder"
1960 mpeg1_vdpau_decoder_deps="vdpau"
1961 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
1962 mpeg1_vdpau_hwaccel_deps="vdpau"
1963 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1964 mpeg2_crystalhd_decoder_select="crystalhd"
1965 mpeg2_dxva2_hwaccel_deps="dxva2"
1966 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1967 mpeg2_vaapi_hwaccel_deps="vaapi"
1968 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1969 mpeg2_vdpau_hwaccel_deps="vdpau"
1970 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1971 mpeg4_crystalhd_decoder_select="crystalhd"
1972 mpeg4_vaapi_hwaccel_deps="vaapi"
1973 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1974 mpeg4_vdpau_decoder_deps="vdpau"
1975 mpeg4_vdpau_decoder_select="mpeg4_decoder"
1976 mpeg4_vdpau_hwaccel_deps="vdpau"
1977 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1978 msmpeg4_crystalhd_decoder_select="crystalhd"
1979 vc1_crystalhd_decoder_select="crystalhd"
1980 vc1_dxva2_hwaccel_deps="dxva2"
1981 vc1_dxva2_hwaccel_select="vc1_decoder"
1982 vc1_vaapi_hwaccel_deps="vaapi"
1983 vc1_vaapi_hwaccel_select="vc1_decoder"
1984 vc1_vdpau_decoder_deps="vdpau"
1985 vc1_vdpau_decoder_select="vc1_decoder"
1986 vc1_vdpau_hwaccel_deps="vdpau"
1987 vc1_vdpau_hwaccel_select="vc1_decoder"
1988 wmv3_crystalhd_decoder_select="crystalhd"
1989 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1990 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1991 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1992 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1993
1994 # parsers
1995 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1996 mpeg4video_parser_select="error_resilience mpegvideo"
1997 mpegvideo_parser_select="error_resilience mpegvideo"
1998 vc1_parser_select="mpegvideo"
1999
2000 # external libraries
2001 libaacplus_encoder_deps="libaacplus"
2002 libcelt_decoder_deps="libcelt"
2003 libfaac_encoder_deps="libfaac"
2004 libfaac_encoder_select="audio_frame_queue"
2005 libfdk_aac_decoder_deps="libfdk_aac"
2006 libfdk_aac_encoder_deps="libfdk_aac"
2007 libfdk_aac_encoder_select="audio_frame_queue"
2008 libgme_demuxer_deps="libgme"
2009 libgsm_decoder_deps="libgsm"
2010 libgsm_encoder_deps="libgsm"
2011 libgsm_ms_decoder_deps="libgsm"
2012 libgsm_ms_encoder_deps="libgsm"
2013 libilbc_decoder_deps="libilbc"
2014 libilbc_encoder_deps="libilbc"
2015 libmodplug_demuxer_deps="libmodplug"
2016 libmp3lame_encoder_deps="libmp3lame"
2017 libmp3lame_encoder_select="audio_frame_queue"
2018 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2019 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2020 libopencore_amrnb_encoder_select="audio_frame_queue"
2021 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2022 libopenjpeg_decoder_deps="libopenjpeg"
2023 libopenjpeg_encoder_deps="libopenjpeg"
2024 libopus_decoder_deps="libopus"
2025 libopus_encoder_deps="libopus"
2026 libopus_encoder_select="audio_frame_queue"
2027 libquvi_demuxer_deps="libquvi"
2028 libschroedinger_decoder_deps="libschroedinger"
2029 libschroedinger_encoder_deps="libschroedinger"
2030 libshine_encoder_deps="libshine"
2031 libshine_encoder_select="audio_frame_queue"
2032 libspeex_decoder_deps="libspeex"
2033 libspeex_encoder_deps="libspeex"
2034 libspeex_encoder_select="audio_frame_queue"
2035 libstagefright_h264_decoder_deps="libstagefright_h264"
2036 libtheora_encoder_deps="libtheora"
2037 libtwolame_encoder_deps="libtwolame"
2038 libvo_aacenc_encoder_deps="libvo_aacenc"
2039 libvo_aacenc_encoder_select="audio_frame_queue"
2040 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2041 libvorbis_decoder_deps="libvorbis"
2042 libvorbis_encoder_deps="libvorbis"
2043 libvorbis_encoder_select="audio_frame_queue"
2044 libvpx_vp8_decoder_deps="libvpx"
2045 libvpx_vp8_encoder_deps="libvpx"
2046 libvpx_vp9_decoder_deps="libvpx"
2047 libvpx_vp9_encoder_deps="libvpx"
2048 libwavpack_encoder_deps="libwavpack"
2049 libx264_encoder_deps="libx264"
2050 libx264rgb_encoder_deps="libx264"
2051 libxavs_encoder_deps="libxavs"
2052 libxvid_encoder_deps="libxvid"
2053 libutvideo_decoder_deps="libutvideo"
2054 libutvideo_encoder_deps="libutvideo"
2055 libzvbi_teletext_decoder_deps="libzvbi"
2056
2057 # demuxers / muxers
2058 ac3_demuxer_select="ac3_parser"
2059 asf_demuxer_select="riffdec"
2060 asf_muxer_select="riffenc"
2061 asf_stream_muxer_select="asf_muxer"
2062 avi_demuxer_select="riffdec"
2063 avi_muxer_select="riffenc"
2064 avisynth_demuxer_deps="avisynth"
2065 avisynth_demuxer_select="riffdec"
2066 caf_demuxer_select="riffdec"
2067 dirac_demuxer_select="dirac_parser"
2068 dts_demuxer_select="dca_parser"
2069 dtshd_demuxer_select="dca_parser"
2070 dxa_demuxer_select="riffdec"
2071 eac3_demuxer_select="ac3_parser"
2072 f4v_muxer_select="mov_muxer"
2073 flac_demuxer_select="flac_parser"
2074 hls_muxer_select="mpegts_muxer"
2075 ipod_muxer_select="mov_muxer"
2076 ismv_muxer_select="mov_muxer"
2077 libnut_demuxer_deps="libnut"
2078 libnut_muxer_deps="libnut"
2079 matroska_audio_muxer_select="matroska_muxer"
2080 matroska_demuxer_select="riffdec"
2081 matroska_demuxer_suggest="bzlib lzo zlib"
2082 matroska_muxer_select="riffenc"
2083 mmf_muxer_select="riffenc"
2084 mov_demuxer_select="riffdec"
2085 mov_demuxer_suggest="zlib"
2086 mov_muxer_select="riffenc rtpenc_chain"
2087 mp3_demuxer_select="mpegaudio_parser"
2088 mp4_muxer_select="mov_muxer"
2089 mpegts_muxer_select="adts_muxer latm_muxer"
2090 mpegtsraw_demuxer_select="mpegts_demuxer"
2091 mxf_d10_muxer_select="mxf_muxer"
2092 nut_muxer_select="riffenc"
2093 nuv_demuxer_select="riffdec"
2094 ogg_demuxer_select="golomb"
2095 psp_muxer_select="mov_muxer"
2096 rtp_demuxer_select="sdp_demuxer"
2097 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2098 rtsp_demuxer_select="http_protocol rtpdec"
2099 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2100 sap_demuxer_select="sdp_demuxer"
2101 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2102 sdp_demuxer_select="rtpdec"
2103 smoothstreaming_muxer_select="ismv_muxer"
2104 spdif_muxer_select="aac_parser"
2105 tak_demuxer_select="tak_parser"
2106 tg2_muxer_select="mov_muxer"
2107 tgp_muxer_select="mov_muxer"
2108 vobsub_demuxer_select="mpegps_demuxer"
2109 w64_demuxer_select="wav_demuxer"
2110 w64_muxer_select="wav_muxer"
2111 wav_demuxer_select="riffdec"
2112 wav_muxer_select="riffenc"
2113 webm_muxer_select="riffenc"
2114 wtv_demuxer_select="riffdec"
2115 xmv_demuxer_select="riffdec"
2116 xwma_demuxer_select="riffdec"
2117
2118 # indevs / outdevs
2119 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2120 alsa_outdev_deps="alsa_asoundlib_h"
2121 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2122 caca_outdev_deps="libcaca"
2123 dshow_indev_deps="IBaseFilter"
2124 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2125 dv1394_indev_deps="dv1394"
2126 dv1394_indev_select="dv_demuxer"
2127 fbdev_indev_deps="linux_fb_h"
2128 fbdev_outdev_deps="linux_fb_h"
2129 iec61883_indev_deps="libiec61883"
2130 jack_indev_deps="jack_jack_h sem_timedwait"
2131 lavfi_indev_deps="avfilter"
2132 libcdio_indev_deps="libcdio"
2133 libdc1394_indev_deps="libdc1394"
2134 libv4l2_indev_deps="libv4l2"
2135 openal_indev_deps="openal"
2136 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2137 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2138 pulse_indev_deps="libpulse"
2139 pulse_outdev_deps="libpulse"
2140 sdl_outdev_deps="sdl"
2141 sndio_indev_deps="sndio_h"
2142 sndio_outdev_deps="sndio_h"
2143 v4l_indev_deps="linux_videodev_h"
2144 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2145 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2146 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2147 vfwcap_indev_extralibs="-lavicap32"
2148 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2149 xv_outdev_extralibs="-lXv -lX11 -lXext"
2150 x11grab_indev_deps="x11grab"
2151
2152 # protocols
2153 bluray_protocol_deps="libbluray"
2154 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2155 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2156 ffrtmpcrypt_protocol_select="tcp_protocol"
2157 ffrtmphttp_protocol_deps="!librtmp_protocol"
2158 ffrtmphttp_protocol_select="http_protocol"
2159 ftp_protocol_select="tcp_protocol"
2160 gopher_protocol_select="network"
2161 httpproxy_protocol_select="tcp_protocol"
2162 http_protocol_select="tcp_protocol"
2163 https_protocol_select="tls_protocol"
2164 librtmp_protocol_deps="librtmp"
2165 librtmpe_protocol_deps="librtmp"
2166 librtmps_protocol_deps="librtmp"
2167 librtmpt_protocol_deps="librtmp"
2168 librtmpte_protocol_deps="librtmp"
2169 libssh_protocol_deps="libssh"
2170 mmsh_protocol_select="http_protocol"
2171 mmst_protocol_select="network"
2172 rtmp_protocol_deps="!librtmp_protocol"
2173 rtmp_protocol_select="tcp_protocol"
2174 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2175 rtmps_protocol_deps="!librtmp_protocol"
2176 rtmps_protocol_select="tls_protocol"
2177 rtmpt_protocol_select="ffrtmphttp_protocol"
2178 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2179 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2180 rtp_protocol_select="udp_protocol"
2181 sctp_protocol_deps="struct_sctp_event_subscribe"
2182 sctp_protocol_select="network"
2183 srtp_protocol_select="rtp_protocol"
2184 tcp_protocol_select="network"
2185 tls_protocol_deps_any="openssl gnutls"
2186 tls_protocol_select="tcp_protocol"
2187 udp_protocol_select="network"
2188 unix_protocol_deps="sys_un_h"
2189 unix_protocol_select="network"
2190
2191 # filters
2192 aconvert_filter_deps="swresample"
2193 amovie_filter_deps="avcodec avformat"
2194 aresample_filter_deps="swresample"
2195 ass_filter_deps="libass"
2196 asyncts_filter_deps="avresample"
2197 atempo_filter_deps="avcodec"
2198 atempo_filter_select="rdft"
2199 azmq_filter_deps="libzmq"
2200 blackframe_filter_deps="gpl"
2201 boxblur_filter_deps="gpl"
2202 colormatrix_filter_deps="gpl"
2203 cropdetect_filter_deps="gpl"
2204 dctdnoiz_filter_deps="avcodec"
2205 dctdnoiz_filter_select="fft"
2206 delogo_filter_deps="gpl"
2207 deshake_filter_deps="avcodec"
2208 deshake_filter_select="dsputil"
2209 drawtext_filter_deps="libfreetype"
2210 ebur128_filter_deps="gpl"
2211 flite_filter_deps="libflite"
2212 frei0r_filter_deps="frei0r dlopen"
2213 frei0r_filter_extralibs='$ldl'
2214 frei0r_src_filter_deps="frei0r dlopen"
2215 frei0r_src_filter_extralibs='$ldl'
2216 geq_filter_deps="gpl"
2217 histeq_filter_deps="gpl"
2218 hqdn3d_filter_deps="gpl"
2219 interlace_filter_deps="gpl"
2220 kerndeint_filter_deps="gpl"
2221 ladspa_filter_deps="ladspa dlopen"
2222 mcdeint_filter_deps="avcodec gpl"
2223 movie_filter_deps="avcodec avformat"
2224 mp_filter_deps="gpl avcodec swscale inline_asm"
2225 mpdecimate_filter_deps="gpl avcodec"
2226 mptestsrc_filter_deps="gpl"
2227 negate_filter_deps="lut_filter"
2228 noise_filter_deps="gpl"
2229 perspective_filter_deps="gpl"
2230 resample_filter_deps="avresample"
2231 ocv_filter_deps="libopencv"
2232 owdenoise_filter_deps="gpl"
2233 pan_filter_deps="swresample"
2234 phase_filter_deps="gpl"
2235 pp_filter_deps="gpl postproc"
2236 pullup_filter_deps="gpl"
2237 removelogo_filter_deps="avcodec avformat swscale"
2238 sab_filter_deps="gpl swscale"
2239 scale_filter_deps="swscale"
2240 smartblur_filter_deps="gpl swscale"
2241 showspectrum_filter_deps="avcodec"
2242 showspectrum_filter_select="rdft"
2243 spp_filter_deps="gpl avcodec"
2244 spp_filter_select="fft"
2245 stereo3d_filter_deps="gpl"
2246 subtitles_filter_deps="avformat avcodec libass"
2247 super2xsai_filter_deps="gpl"
2248 tinterlace_filter_deps="gpl"
2249 vidstabdetect_filter_deps="libvidstab"
2250 vidstabtransform_filter_deps="libvidstab"
2251 yadif_filter_deps="gpl"
2252 pixfmts_super2xsai_test_deps="super2xsai_filter"
2253 tinterlace_merge_test_deps="tinterlace_filter"
2254 tinterlace_pad_test_deps="tinterlace_filter"
2255 zmq_filter_deps="libzmq"
2256
2257 # libraries
2258 avcodec_deps="avutil"
2259 avdevice_deps="avutil avcodec avformat"
2260 avfilter_deps="avutil"
2261 avformat_deps="avutil avcodec"
2262 avresample_deps="avutil"
2263 postproc_deps="avutil gpl"
2264 swscale_deps="avutil"
2265
2266 # programs
2267 ffmpeg_deps="avcodec avfilter avformat swresample"
2268 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2269                null_filter
2270                setpts_filter trim_filter"
2271 ffplay_deps="avcodec avformat swscale swresample sdl"
2272 ffplay_select="rdft crop_filter"
2273 ffprobe_deps="avcodec avformat"
2274 ffserver_deps="avformat fork sarestart"
2275 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2276 ffserver_extralibs='$ldl'
2277
2278 # documentation
2279 podpages_deps="perl"
2280 manpages_deps="perl pod2man"
2281 htmlpages_deps="texi2html"
2282 txtpages_deps="makeinfo"
2283 doc_deps_any="manpages htmlpages podpages txtpages"
2284
2285 # default parameters
2286
2287 logfile="config.log"
2288
2289 # installation paths
2290 prefix_default="/usr/local"
2291 bindir_default='${prefix}/bin'
2292 datadir_default='${prefix}/share/ffmpeg'
2293 docdir_default='${prefix}/share/doc/ffmpeg'
2294 incdir_default='${prefix}/include'
2295 libdir_default='${prefix}/lib'
2296 mandir_default='${prefix}/share/man'
2297 shlibdir_default="$libdir_default"
2298
2299 # toolchain
2300 ar_default="ar"
2301 cc_default="gcc"
2302 cxx_default="g++"
2303 host_cc_default="gcc"
2304 cp_f="cp -f"
2305 install="install"
2306 ln_s="ln -s -f"
2307 nm_default="nm -g"
2308 objformat="elf"
2309 pkg_config_default=pkg-config
2310 ranlib="ranlib"
2311 strip_default="strip"
2312 yasmexe_default="yasm"
2313
2314 nogas=":"
2315
2316 # machine
2317 arch_default=$(uname -m)
2318 cpu="generic"
2319
2320 # OS
2321 target_os_default=$(tolower $(uname -s))
2322 host_os=$target_os_default
2323
2324 # configurable options
2325 enable $PROGRAM_LIST
2326 enable $DOCUMENT_LIST
2327 enable $(filter_out avresample $LIBRARY_LIST)
2328 enable stripping
2329
2330 enable asm
2331 enable debug
2332 enable doc
2333 enable optimizations
2334 enable runtime_cpudetect
2335 enable safe_bitstream_reader
2336 enable static
2337 enable swscale_alpha
2338
2339 # Enable hwaccels by default.
2340 enable dxva2 vaapi vdpau
2341
2342 # build settings
2343 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2344 LIBPREF="lib"
2345 LIBSUF=".a"
2346 FULLNAME='$(NAME)$(BUILDSUF)'
2347 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2348 SLIBPREF="lib"
2349 SLIBSUF=".so"
2350 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2351 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2352 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2353 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2354 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2355 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2356
2357 asflags_filter=echo
2358 cflags_filter=echo
2359 ldflags_filter=echo
2360
2361 AS_C='-c'
2362 AS_O='-o $@'
2363 CC_C='-c'
2364 CC_E='-E -o $@'
2365 CC_O='-o $@'
2366 CXX_C='-c'
2367 CXX_O='-o $@'
2368 LD_O='-o $@'
2369 LD_LIB='-l%'
2370 LD_PATH='-L'
2371 HOSTCC_C='-c'
2372 HOSTCC_O='-o $@'
2373 HOSTLD_O='-o $@'
2374
2375 host_cflags='-O3 -g'
2376 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
2377 host_libs='-lm'
2378 host_cflags_filter=echo
2379 host_ldflags_filter=echo
2380
2381 target_path='$(CURDIR)'
2382
2383 # since the object filename is not given with the -MM flag, the compiler
2384 # is only able to print the basename, and we must add the path ourselves
2385 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2386 DEPFLAGS='-MM'
2387
2388 # find source path
2389 if test -f configure; then
2390     source_path=.
2391 else
2392     source_path=$(cd $(dirname "$0"); pwd)
2393     echo "$source_path" | grep -q '[[:blank:]]' &&
2394         die "Out of tree builds are impossible with whitespace in source path."
2395     test -e "$source_path/config.h" &&
2396         die "Out of tree builds are impossible with config.h in source dir."
2397 fi
2398
2399 for v in "$@"; do
2400     r=${v#*=}
2401     l=${v%"$r"}
2402     r=$(sh_quote "$r")
2403     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2404 done
2405
2406 find_things(){
2407     thing=$1
2408     pattern=$2
2409     file=$source_path/$3
2410     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2411 }
2412
2413 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2414 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2415 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2416 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2417 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2418 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2419 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2420 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2421 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2422 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2423 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2424
2425 ALL_COMPONENTS="
2426     $BSF_LIST
2427     $DECODER_LIST
2428     $DEMUXER_LIST
2429     $ENCODER_LIST
2430     $FILTER_LIST
2431     $HWACCEL_LIST
2432     $INDEV_LIST
2433     $MUXER_LIST
2434     $OUTDEV_LIST
2435     $PARSER_LIST
2436     $PROTOCOL_LIST
2437 "
2438
2439 for n in $COMPONENT_LIST; do
2440     v=$(toupper ${n%s})_LIST
2441     eval enable \$$v
2442     eval ${n}_if_any="\$$v"
2443 done
2444
2445 enable $ARCH_EXT_LIST
2446
2447 die_unknown(){
2448     echo "Unknown option \"$1\"."
2449     echo "See $0 --help for available options."
2450     exit 1
2451 }
2452
2453 print_3_columns() {
2454     cat | tr ' ' '\n' | sort | pr -r -3 -t
2455 }
2456
2457 show_list() {
2458     suffix=_$1
2459     shift
2460     echo $* | sed s/$suffix//g | print_3_columns
2461     exit 0
2462 }
2463
2464 rand_list(){
2465     IFS=', '
2466     set -- $*
2467     unset IFS
2468     for thing; do
2469         comp=${thing%:*}
2470         prob=${thing#$comp}
2471         prob=${prob#:}
2472         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2473         echo "prob ${prob:-0.5}"
2474         printf '%s\n' $comp
2475     done
2476 }
2477
2478 do_random(){
2479     action=$1
2480     shift
2481     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2482     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2483 }
2484
2485 for opt do
2486     optval="${opt#*=}"
2487     case "$opt" in
2488         --extra-ldflags=*)
2489             add_ldflags $optval
2490         ;;
2491         --extra-libs=*)
2492             add_extralibs $optval
2493         ;;
2494         --disable-devices)
2495             disable $INDEV_LIST $OUTDEV_LIST
2496         ;;
2497         --enable-debug=*)
2498             debuglevel="$optval"
2499         ;;
2500         --disable-programs)
2501             disable $PROGRAM_LIST
2502         ;;
2503         --disable-everything)
2504             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2505         ;;
2506         --disable-all)
2507             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2508             disable $LIBRARY_LIST $PROGRAM_LIST doc
2509         ;;
2510         --enable-random|--disable-random)
2511             action=${opt%%-random}
2512             do_random ${action#--} $COMPONENT_LIST
2513         ;;
2514         --enable-random=*|--disable-random=*)
2515             action=${opt%%-random=*}
2516             do_random ${action#--} $optval
2517         ;;
2518         --enable-*=*|--disable-*=*)
2519             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2520             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2521             eval list=\$$(toupper $thing)_LIST
2522             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2523             list=$(filter "$name" $list)
2524             [ "$list" = "" ] && warn "Option $opt did not match anything"
2525             $action $list
2526         ;;
2527         --enable-?*|--disable-?*)
2528             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2529             if is_in $option $COMPONENT_LIST; then
2530                 test $action = disable && action=unset
2531                 eval $action \$$(toupper ${option%s})_LIST
2532             elif is_in $option $CMDLINE_SELECT; then
2533                 $action $option
2534             else
2535                 die_unknown $opt
2536             fi
2537         ;;
2538         --list-*)
2539             NAME="${opt#--list-}"
2540             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2541             NAME=${NAME%s}
2542             eval show_list $NAME \$$(toupper $NAME)_LIST
2543         ;;
2544         --help|-h) show_help
2545         ;;
2546         --fatal-warnings) enable fatal_warnings
2547         ;;
2548         *)
2549             optname="${opt%%=*}"
2550             optname="${optname#--}"
2551             optname=$(echo "$optname" | sed 's/-/_/g')
2552             if is_in $optname $CMDLINE_SET; then
2553                 eval $optname='$optval'
2554             elif is_in $optname $CMDLINE_APPEND; then
2555                 append $optname "$optval"
2556             else
2557                 die_unknown $opt
2558             fi
2559         ;;
2560     esac
2561 done
2562
2563 disabled logging && logfile=/dev/null
2564
2565 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2566 set >> $logfile
2567
2568 test -n "$cross_prefix" && enable cross_compile
2569
2570 if enabled cross_compile; then
2571     test -n "$arch" && test -n "$target_os" ||
2572         die "Must specify target arch and OS when cross-compiling"
2573 fi
2574
2575 ar_default="${cross_prefix}${ar_default}"
2576 cc_default="${cross_prefix}${cc_default}"
2577 cxx_default="${cross_prefix}${cxx_default}"
2578 nm_default="${cross_prefix}${nm_default}"
2579 pkg_config_default="${cross_prefix}${pkg_config_default}"
2580 ranlib="${cross_prefix}${ranlib}"
2581 strip_default="${cross_prefix}${strip_default}"
2582
2583 sysinclude_default="${sysroot}/usr/include"
2584
2585 test -n "$valgrind" && toolchain="valgrind-memcheck"
2586
2587 case "$toolchain" in
2588     clang-asan)
2589         cc_default="clang"
2590         add_cflags  -fsanitize=address
2591         add_ldflags -fsanitize=address
2592     ;;
2593     clang-tsan)
2594         cc_default="clang"
2595         add_cflags  -fsanitize=thread -pie
2596         add_ldflags -fsanitize=thread -pie
2597     ;;
2598     gcc-asan)
2599         cc_default="gcc"
2600         add_cflags  -fsanitize=address
2601         add_ldflags -fsanitize=address
2602     ;;
2603     gcc-tsan)
2604         cc_default="gcc"
2605         add_cflags  -fsanitize=thread -pie -fPIC
2606         add_ldflags -fsanitize=thread -pie -fPIC
2607     ;;
2608     valgrind-massif)
2609         target_exec_default=${valgrind:-"valgrind"}
2610         target_exec_args="--tool=massif --alloc-fn=av_malloc --alloc-fn=av_mallocz --alloc-fn=av_calloc --alloc-fn=av_fast_padded_malloc --alloc-fn=av_fast_malloc --alloc-fn=av_realloc_f --alloc-fn=av_fast_realloc --alloc-fn=av_realloc"
2611     ;;
2612     valgrind-memcheck)
2613         target_exec_default=${valgrind:-"valgrind"}
2614         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2615     ;;
2616     msvc)
2617         cc_default="c99wrap cl"
2618         ld_default="c99wrap link"
2619         nm_default="dumpbin -symbols"
2620         ar_default="lib"
2621         target_os_default="win32"
2622     ;;
2623     icl)
2624         cc_default="c99wrap -noconv icl"
2625         ld_default="c99wrap xilink"
2626         nm_default="dumpbin -symbols"
2627         ar_default="xilib"
2628         target_os_default="win32"
2629     ;;
2630     gcov)
2631         add_cflags  -fprofile-arcs -ftest-coverage
2632         add_ldflags -fprofile-arcs -ftest-coverage
2633     ;;
2634     ?*)
2635         die "Unknown toolchain $toolchain"
2636     ;;
2637 esac
2638
2639 set_default arch cc cxx pkg_config strip sysinclude target_exec target_os yasmexe
2640 enabled cross_compile || host_cc_default=$cc
2641 set_default host_cc
2642
2643 if ! $pkg_config --version >/dev/null 2>&1; then
2644     warn "$pkg_config not found, library detection may fail."
2645     pkg_config=false
2646 fi
2647
2648 exesuf() {
2649     case $1 in
2650         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2651     esac
2652 }
2653
2654 EXESUF=$(exesuf $target_os)
2655 HOSTEXESUF=$(exesuf $host_os)
2656
2657 # set temporary file name
2658 : ${TMPDIR:=$TEMPDIR}
2659 : ${TMPDIR:=$TMP}
2660 : ${TMPDIR:=/tmp}
2661
2662 if [ -n "$tempprefix" ] ; then
2663     mktemp(){
2664         echo $tempprefix.${HOSTNAME}.${UID}
2665     }
2666 elif ! check_cmd mktemp -u XXXXXX; then
2667     # simple replacement for missing mktemp
2668     # NOT SAFE FOR GENERAL USE
2669     mktemp(){
2670         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2671     }
2672 fi
2673
2674 tmpfile(){
2675     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2676         (set -C; exec > $tmp) 2>/dev/null ||
2677         die "Unable to create temporary file in $TMPDIR."
2678     append TMPFILES $tmp
2679     eval $1=$tmp
2680 }
2681
2682 trap 'rm -f -- $TMPFILES' EXIT
2683
2684 tmpfile TMPASM .asm
2685 tmpfile TMPC   .c
2686 tmpfile TMPCPP .cpp
2687 tmpfile TMPE   $EXESUF
2688 tmpfile TMPH   .h
2689 tmpfile TMPO   .o
2690 tmpfile TMPS   .S
2691 tmpfile TMPSH  .sh
2692 tmpfile TMPV   .ver
2693
2694 unset -f mktemp
2695
2696 chmod +x $TMPE
2697
2698 # make sure we can execute files in $TMPDIR
2699 cat > $TMPSH 2>> $logfile <<EOF
2700 #! /bin/sh
2701 EOF
2702 chmod +x $TMPSH >> $logfile 2>&1
2703 if ! $TMPSH >> $logfile 2>&1; then
2704     cat <<EOF
2705 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2706 variable to another directory and make sure that it is not mounted noexec.
2707 EOF
2708     die "Sanity test failed."
2709 fi
2710
2711 ccc_flags(){
2712     for flag; do
2713         case $flag in
2714             -std=c99)           echo -c99                       ;;
2715             -mcpu=*)            echo -arch ${flag#*=}           ;;
2716             -mieee)             echo -ieee                      ;;
2717             -O*|-fast)          echo $flag                      ;;
2718             -fno-math-errno)    echo -assume nomath_errno       ;;
2719             -g)                 echo -g3                        ;;
2720             -Wall)              echo -msg_enable level2         ;;
2721             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2722             -Wl,*)              echo $flag                      ;;
2723             -f*|-W*)                                            ;;
2724             *)                  echo $flag                      ;;
2725         esac
2726    done
2727 }
2728
2729 cparser_flags(){
2730     for flag; do
2731         case $flag in
2732             -Wno-switch)             echo -Wno-switch-enum ;;
2733             -Wno-format-zero-length) ;;
2734             -Wdisabled-optimization) ;;
2735             -Wno-pointer-sign)       echo -Wno-other ;;
2736             *)                       echo $flag ;;
2737         esac
2738     done
2739 }
2740
2741 msvc_common_flags(){
2742     for flag; do
2743         case $flag in
2744             # In addition to specifying certain flags under the compiler
2745             # specific filters, they must be specified here as well or else the
2746             # generic catch all at the bottom will print the original flag.
2747             -Wall)                ;;
2748             -std=c99)             ;;
2749             # Common flags
2750             -fomit-frame-pointer) ;;
2751             -g)                   echo -Z7 ;;
2752             -fno-math-errno)      ;;
2753             -fno-common)          ;;
2754             -fno-signed-zeros)    ;;
2755             -fPIC)                ;;
2756             -mthumb)              ;;
2757             -march=*)             ;;
2758             -lz)                  echo zlib.lib ;;
2759             -lavifil32)           echo vfw32.lib ;;
2760             -lavicap32)           echo vfw32.lib user32.lib ;;
2761             -l*)                  echo ${flag#-l}.lib ;;
2762             *)                    echo $flag ;;
2763         esac
2764     done
2765 }
2766
2767 msvc_flags(){
2768     msvc_common_flags "$@"
2769     for flag; do
2770         case $flag in
2771             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2772                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2773                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2774                                        -wd4554 \
2775                                        -wd4273 ;;
2776         esac
2777     done
2778 }
2779
2780 icl_flags(){
2781     msvc_common_flags "$@"
2782     for flag; do
2783         case $flag in
2784             # Despite what Intel's documentation says -Wall, which is supported
2785             # on Windows, does enable remarks so disable them here.
2786             -Wall)                echo $flag -Qdiag-disable:remark ;;
2787             -std=c99)             echo -Qstd=c99 ;;
2788         esac
2789     done
2790 }
2791
2792 pgi_flags(){
2793     for flag; do
2794         case $flag in
2795             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2796             -fomit-frame-pointer) echo -Mnoframe ;;
2797             -g)                   echo -gopt ;;
2798             *)                    echo $flag ;;
2799         esac
2800     done
2801 }
2802
2803 suncc_flags(){
2804     for flag; do
2805         case $flag in
2806             -march=*|-mcpu=*)
2807                 case "${flag#*=}" in
2808                     native)                   echo -xtarget=native       ;;
2809                     v9|niagara)               echo -xarch=sparc          ;;
2810                     ultrasparc)               echo -xarch=sparcvis       ;;
2811                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2812                     i586|pentium)             echo -xchip=pentium        ;;
2813                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2814                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2815                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2816                     pentium4*)          echo -xtarget=pentium4           ;;
2817                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2818                     *-sse3)             echo -xarch=sse3                 ;;
2819                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2820                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2821                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2822                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
2823                     bdver*)                    echo -xarch=avx           ;;
2824                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2825                     k8|opteron|athlon64|athlon-fx)
2826                                                echo -xarch=sse2a         ;;
2827                     athlon*)                   echo -xarch=pentium_proa  ;;
2828                 esac
2829                 ;;
2830             -std=c99)             echo -xc99              ;;
2831             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2832             -fPIC)                echo -KPIC -xcode=pic32 ;;
2833             -W*,*)                echo $flag              ;;
2834             -f*-*|-W*|-mimpure-text)                      ;;
2835             -shared)              echo -G                 ;;
2836             *)                    echo $flag              ;;
2837         esac
2838     done
2839 }
2840
2841 tms470_flags(){
2842     for flag; do
2843         case $flag in
2844             -march=*|-mcpu=*)
2845                 case "${flag#*=}" in
2846                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2847                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2848                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2849                     armv6*|arm11*)          echo -mv=6   ;;
2850                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2851                                             echo -mv=5e  ;;
2852                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2853                 esac
2854                 ;;
2855             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2856             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2857             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2858             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2859             -msoft-float)   echo --float_support=vfplib       ;;
2860             -O[0-3]|-mf=*)  echo $flag                        ;;
2861             -g)             echo -g -mn                       ;;
2862             -pds=*)         echo $flag                        ;;
2863             -D*|-I*)        echo $flag                        ;;
2864             --gcc|--abi=*)  echo $flag                        ;;
2865             -me)            echo $flag                        ;;
2866         esac
2867     done
2868 }
2869
2870 probe_cc(){
2871     pfx=$1
2872     _cc=$2
2873
2874     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2875     unset _ld_o _ldflags _ld_lib _ld_path
2876     unset _depflags _DEPCMD _DEPFLAGS
2877     _flags_filter=echo
2878
2879     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2880         _type=llvm_gcc
2881         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2882         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2883         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2884         _cflags_speed='-O3'
2885         _cflags_size='-Os'
2886     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2887         _type=gcc
2888         gcc_version=$($_cc --version | head -n1)
2889         gcc_basever=$($_cc -dumpversion)
2890         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2891         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2892         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2893         if ! $_cc -dumpversion | grep -q '^2\.'; then
2894             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2895         fi
2896         _cflags_speed='-O3'
2897         _cflags_size='-Os'
2898     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2899         _type=icc
2900         _ident=$($_cc --version | head -n1)
2901         _depflags='-MMD'
2902         _cflags_speed='-O3'
2903         _cflags_size='-Os'
2904         _cflags_noopt='-O1'
2905     elif $_cc -v 2>&1 | grep -q xlc; then
2906         _type=xlc
2907         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2908         _cflags_speed='-O5'
2909         _cflags_size='-O5 -qcompact'
2910     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2911         _type=ccc
2912         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2913         _DEPFLAGS='-M'
2914         _cflags_speed='-fast'
2915         _cflags_size='-O1'
2916         _flags_filter=ccc_flags
2917     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2918         test -d "$sysroot" || die "No valid sysroot specified."
2919         _type=armcc
2920         _ident=$($_cc --vsn | head -n1)
2921         armcc_conf="$PWD/armcc.conf"
2922         $_cc --arm_linux_configure                 \
2923              --arm_linux_config_file="$armcc_conf" \
2924              --configure_sysroot="$sysroot"        \
2925              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2926              die "Error creating armcc configuration file."
2927         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2928         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2929         as_default="${cross_prefix}gcc"
2930         _depflags='-MMD'
2931         _cflags_speed='-O3'
2932         _cflags_size='-Os'
2933     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2934         _type=tms470
2935         _ident=$($_cc -version | head -n1 | tr -s ' ')
2936         _flags='--gcc --abi=eabi -me'
2937         _cc_e='-ppl -fe=$@'
2938         _cc_o='-fe=$@'
2939         _depflags='-ppa -ppd=$(@:.o=.d)'
2940         _cflags_speed='-O3 -mf=5'
2941         _cflags_size='-O3 -mf=2'
2942         _flags_filter=tms470_flags
2943     elif $_cc -v 2>&1 | grep -q clang; then
2944         _type=clang
2945         _ident=$($_cc --version | head -n1)
2946         _depflags='-MMD'
2947         _cflags_speed='-O3'
2948         _cflags_size='-Os'
2949     elif $_cc -V 2>&1 | grep -q Sun; then
2950         _type=suncc
2951         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2952         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2953         _DEPFLAGS='-xM1 -xc99'
2954         _ldflags='-std=c99'
2955         _cflags_speed='-O5'
2956         _cflags_size='-O5 -xspace'
2957         _flags_filter=suncc_flags
2958     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2959         _type=pathscale
2960         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2961         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2962         _cflags_speed='-O2'
2963         _cflags_size='-Os'
2964         _flags_filter='filter_out -Wdisabled-optimization'
2965     elif $_cc -v 2>&1 | grep -q Open64; then
2966         _type=open64
2967         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2968         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2969         _cflags_speed='-O2'
2970         _cflags_size='-Os'
2971         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2972     elif $_cc -V 2>&1 | grep -q Portland; then
2973         _type=pgi
2974         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2975         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2976         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2977         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2978         _cflags_noopt="-O"
2979         _flags_filter=pgi_flags
2980     elif $_cc 2>&1 | grep -q Microsoft; then
2981         _type=msvc
2982         _ident=$($cc 2>&1 | head -n1)
2983         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2984         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2985         _cflags_speed="-O2"
2986         _cflags_size="-O1"
2987         # Nonstandard output options, to avoid msys path conversion issues.
2988         # Relies on wrapper to remap it.
2989         if $_cc 2>&1 | grep -q Linker; then
2990             _ld_o='-out $@'
2991         else
2992             _ld_o='-Fe$@'
2993         fi
2994         _cc_o='-Fo $@'
2995         _cc_e='-P -Fi $@'
2996         _flags_filter=msvc_flags
2997         _ld_lib='lib%.a'
2998         _ld_path='-libpath:'
2999         _flags='-nologo'
3000         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3001         if [ $pfx = hostcc ]; then
3002             append _cflags -Dsnprintf=_snprintf
3003         fi
3004         disable stripping
3005     elif $_cc 2>&1 | grep -q Intel; then
3006         _type=icl
3007         _ident=$($cc 2>&1 | head -n1)
3008         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3009         # Not only is O3 broken on 13.x+ but it is slower on all previous
3010         # versions (tested) as well.
3011         _cflags_speed="-O2"
3012         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3013         # Nonstandard output options, to avoid msys path conversion issues.
3014         # Relies on wrapper to remap it.
3015         if $_cc 2>&1 | grep -q Linker; then
3016             _ld_o='-out $@'
3017         else
3018             _ld_o='-Fe$@'
3019         fi
3020         _cc_o='-Fo $@'
3021         _cc_e='-P'
3022         _flags_filter=icl_flags
3023         _ld_lib='lib%.a'
3024         _ld_path='-libpath:'
3025         # -Qdiag-error to make icl error when seeing certain unknown arguments
3026         _flags='-nologo -Qdiag-error:4044,10157'
3027         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3028         # with MSVC which enables it by default.
3029         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3030         if [ $pfx = hostcc ]; then
3031             append _cflags -Dsnprintf=_snprintf
3032         fi
3033     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3034         _type=cparser
3035         _ident=$($_cc --version | head -n1)
3036         _depflags='-MMD'
3037         _cflags_speed='-O4'
3038         _cflags_size='-O2'
3039         _flags_filter=cparser_flags
3040     fi
3041
3042     eval ${pfx}_type=\$_type
3043     eval ${pfx}_ident=\$_ident
3044 }
3045
3046 set_ccvars(){
3047     eval ${1}_C=\${_cc_c-\${${1}_C}}
3048     eval ${1}_E=\${_cc_e-\${${1}_E}}
3049     eval ${1}_O=\${_cc_o-\${${1}_O}}
3050
3051     if [ -n "$_depflags" ]; then
3052         eval ${1}_DEPFLAGS=\$_depflags
3053     else
3054         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3055         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3056         eval DEP${1}FLAGS=\$_flags
3057     fi
3058 }
3059
3060 probe_cc cc "$cc"
3061 cflags_filter=$_flags_filter
3062 cflags_speed=$_cflags_speed
3063 cflags_size=$_cflags_size
3064 cflags_noopt=$_cflags_noopt
3065 add_cflags $_flags $_cflags
3066 cc_ldflags=$_ldflags
3067 set_ccvars CC
3068
3069 probe_cc hostcc "$host_cc"
3070 host_cflags_filter=$_flags_filter
3071 add_host_cflags  $_flags $_cflags
3072 set_ccvars HOSTCC
3073
3074 test -n "$cc_type" && enable $cc_type ||
3075     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3076
3077 : ${as_default:=$cc}
3078 : ${dep_cc_default:=$cc}
3079 : ${ld_default:=$cc}
3080 : ${host_ld_default:=$host_cc}
3081 set_default ar as dep_cc ld host_ld
3082
3083 probe_cc as "$as"
3084 asflags_filter=$_flags_filter
3085 add_asflags $_flags $_cflags
3086 set_ccvars AS
3087
3088 probe_cc ld "$ld"
3089 ldflags_filter=$_flags_filter
3090 add_ldflags $_flags $_ldflags
3091 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3092 LD_O=${_ld_o-$LD_O}
3093 LD_LIB=${_ld_lib-$LD_LIB}
3094 LD_PATH=${_ld_path-$LD_PATH}
3095
3096 probe_cc hostld "$host_ld"
3097 host_ldflags_filter=$_flags_filter
3098 add_host_ldflags $_flags $_ldflags
3099 HOSTLD_O=${_ld_o-$HOSTLD_O}
3100
3101 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3102     probe_cc depcc "$dep_cc"
3103     CCDEP=${_DEPCMD:-$DEPCMD}
3104     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3105     DEPCCFLAGS=$_flags
3106 fi
3107
3108 if $ar 2>&1 | grep -q Microsoft; then
3109     arflags="-nologo"
3110     ar_o='-out:$@'
3111 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3112     arflags="rq"
3113     ar_o='$@'
3114 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3115     arflags='-Xany -r -c'
3116     ar_o='$@'
3117 else
3118     arflags="rc"
3119     ar_o='$@'
3120 fi
3121
3122 add_cflags $extra_cflags
3123 add_cxxflags $extra_cxxflags
3124 add_asflags $extra_cflags
3125
3126 if test -n "$sysroot"; then
3127     case "$cc_type" in
3128         gcc|llvm_gcc|clang)
3129             add_cppflags --sysroot="$sysroot"
3130             add_ldflags --sysroot="$sysroot"
3131         ;;
3132         tms470)
3133             add_cppflags -I"$sysinclude"
3134             add_ldflags  --sysroot="$sysroot"
3135         ;;
3136     esac
3137 fi
3138
3139 if test "$cpu" = host; then
3140     enabled cross_compile &&
3141         die "--cpu=host makes no sense when cross-compiling."
3142
3143     case "$cc_type" in
3144         gcc|llvm_gcc)
3145             check_native(){
3146                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3147                 sed -n "/cc1.*$1=/{
3148                             s/.*$1=\\([^ ]*\\).*/\\1/
3149                             p
3150                             q
3151                         }" $TMPE
3152             }
3153             cpu=$(check_native -march || check_native -mcpu)
3154         ;;
3155     esac
3156
3157     test "${cpu:-host}" = host &&
3158         die "--cpu=host not supported with compiler $cc"
3159 fi
3160
3161 # Deal with common $arch aliases
3162 case "$arch" in
3163     aarch64|arm64)
3164         arch="aarch64"
3165     ;;
3166     arm*|iPad*|iPhone*)
3167         arch="arm"
3168     ;;
3169     mips*|IP*)
3170         arch="mips"
3171     ;;
3172     parisc*|hppa*)
3173         arch="parisc"
3174     ;;
3175     "Power Macintosh"|ppc*|powerpc*)
3176         arch="ppc"
3177     ;;
3178     s390|s390x)
3179         arch="s390"
3180     ;;
3181     sh4|sh)
3182         arch="sh4"
3183     ;;
3184     sun4u|sparc*)
3185         arch="sparc"
3186     ;;
3187     tilegx|tile-gx)
3188         arch="tilegx"
3189     ;;
3190     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3191         arch="x86"
3192     ;;
3193 esac
3194
3195 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3196 enable $arch
3197
3198 # Add processor-specific flags
3199 if enabled aarch64; then
3200
3201     case $cpu in
3202         armv*)
3203             cpuflags="-march=$cpu"
3204         ;;
3205         *)
3206             cpuflags="-mcpu=$cpu"
3207         ;;
3208     esac
3209
3210 elif enabled alpha; then
3211
3212     cpuflags="-mcpu=$cpu"
3213
3214 elif enabled arm; then
3215
3216     check_arm_arch() {
3217         check_cpp_condition stddef.h \
3218             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3219             $cpuflags
3220     }
3221
3222     probe_arm_arch() {
3223         if   check_arm_arch 4;        then echo armv4;
3224         elif check_arm_arch 4T;       then echo armv4t;
3225         elif check_arm_arch 5;        then echo armv5;
3226         elif check_arm_arch 5E;       then echo armv5e;
3227         elif check_arm_arch 5T;       then echo armv5t;
3228         elif check_arm_arch 5TE;      then echo armv5te;
3229         elif check_arm_arch 5TEJ;     then echo armv5te;
3230         elif check_arm_arch 6;        then echo armv6;
3231         elif check_arm_arch 6J;       then echo armv6j;
3232         elif check_arm_arch 6K;       then echo armv6k;
3233         elif check_arm_arch 6Z;       then echo armv6z;
3234         elif check_arm_arch 6ZK;      then echo armv6zk;
3235         elif check_arm_arch 6T2;      then echo armv6t2;
3236         elif check_arm_arch 7;        then echo armv7;
3237         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3238         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3239         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3240         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3241         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3242         fi
3243     }
3244
3245     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3246
3247     case $cpu in
3248         armv*)
3249             cpuflags="-march=$cpu"
3250             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3251         ;;
3252         *)
3253             cpuflags="-mcpu=$cpu"
3254             case $cpu in
3255                 cortex-a*)                               subarch=armv7a  ;;
3256                 cortex-r*)                               subarch=armv7r  ;;
3257                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3258                 arm11*)                                  subarch=armv6   ;;
3259                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3260                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3261                 *)                             subarch=$(probe_arm_arch) ;;
3262             esac
3263         ;;
3264     esac
3265
3266     case "$subarch" in
3267         armv5t*)    enable fast_clz                ;;
3268         armv[6-8]*) enable fast_clz fast_unaligned ;;
3269     esac
3270
3271 elif enabled avr32; then
3272
3273     case $cpu in
3274         ap7[02]0[0-2])
3275             subarch="avr32_ap"
3276             cpuflags="-mpart=$cpu"
3277         ;;
3278         ap)
3279             subarch="avr32_ap"
3280             cpuflags="-march=$cpu"
3281         ;;
3282         uc3[ab]*)
3283             subarch="avr32_uc"
3284             cpuflags="-mcpu=$cpu"
3285         ;;
3286         uc)
3287             subarch="avr32_uc"
3288             cpuflags="-march=$cpu"
3289         ;;
3290     esac
3291
3292 elif enabled bfin; then
3293
3294     cpuflags="-mcpu=$cpu"
3295
3296 elif enabled mips; then
3297
3298     cpuflags="-march=$cpu"
3299
3300     case $cpu in
3301         24kc)
3302             disable mipsfpu
3303             disable mipsdspr1
3304             disable mipsdspr2
3305         ;;
3306         24kf*)
3307             disable mipsdspr1
3308             disable mipsdspr2
3309         ;;
3310         24kec|34kc|1004kc)
3311             disable mipsfpu
3312             disable mipsdspr2
3313         ;;
3314         24kef*|34kf*|1004kf*)
3315             disable mipsdspr2
3316         ;;
3317         74kc)
3318             disable mipsfpu
3319         ;;
3320     esac
3321
3322 elif enabled ppc; then
3323
3324     case $(tolower $cpu) in
3325         601|ppc601|powerpc601)
3326             cpuflags="-mcpu=601"
3327             disable altivec
3328         ;;
3329         603*|ppc603*|powerpc603*)
3330             cpuflags="-mcpu=603"
3331             disable altivec
3332         ;;
3333         604*|ppc604*|powerpc604*)
3334             cpuflags="-mcpu=604"
3335             disable altivec
3336         ;;
3337         g3|75*|ppc75*|powerpc75*)
3338             cpuflags="-mcpu=750"
3339             disable altivec
3340         ;;
3341         g4|745*|ppc745*|powerpc745*)
3342             cpuflags="-mcpu=7450"
3343         ;;
3344         74*|ppc74*|powerpc74*)
3345             cpuflags="-mcpu=7400"
3346         ;;
3347         g5|970|ppc970|powerpc970)
3348             cpuflags="-mcpu=970"
3349         ;;
3350         power[3-7]*)
3351             cpuflags="-mcpu=$cpu"
3352         ;;
3353         cell)
3354             cpuflags="-mcpu=cell"
3355             enable ldbrx
3356         ;;
3357         e500mc)
3358             cpuflags="-mcpu=e500mc"
3359             disable altivec
3360         ;;
3361         e500v2)
3362             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3363             disable altivec
3364         ;;
3365         e500)
3366             cpuflags="-mcpu=8540 -mhard-float"
3367             disable altivec
3368         ;;
3369     esac
3370
3371 elif enabled sparc; then
3372
3373     case $cpu in
3374         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3375             cpuflags="-mcpu=$cpu"
3376             disable vis
3377         ;;
3378         ultrasparc*|niagara[234])
3379             cpuflags="-mcpu=$cpu"
3380         ;;
3381     esac
3382
3383 elif enabled x86; then
3384
3385     case $cpu in
3386         i[345]86|pentium)
3387             cpuflags="-march=$cpu"
3388             disable mmx
3389         ;;
3390         # targets that do NOT support nopl and conditional mov (cmov)
3391         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3392             cpuflags="-march=$cpu"
3393             disable i686
3394         ;;
3395         # targets that do support nopl and conditional mov (cmov)
3396         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3397             cpuflags="-march=$cpu"
3398             enable i686
3399             enable fast_cmov
3400         ;;
3401         # targets that do support conditional mov but on which it's slow
3402         pentium4|pentium4m|prescott|nocona)
3403             cpuflags="-march=$cpu"
3404             enable i686
3405             disable fast_cmov
3406         ;;
3407     esac
3408
3409 fi
3410
3411 if [ "$cpu" != generic ]; then
3412     add_cflags  $cpuflags
3413     add_asflags $cpuflags
3414 fi
3415
3416 # compiler sanity check
3417 check_exec <<EOF
3418 int main(void){ return 0; }
3419 EOF
3420 if test "$?" != 0; then
3421     echo "$cc is unable to create an executable file."
3422     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3423         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3424         echo "Only do this if you know what cross compiling means."
3425     fi
3426     die "C compiler test failed."
3427 fi
3428
3429 add_cppflags -D_ISOC99_SOURCE
3430 add_cxxflags -D__STDC_CONSTANT_MACROS
3431 check_cflags -std=c99
3432 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3433 #include <stdlib.h>
3434 EOF
3435 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3436 #include <stdlib.h>
3437 EOF
3438
3439 check_host_cflags -std=c99
3440 check_host_cflags -Wall
3441
3442 check_64bit(){
3443     arch32=$1
3444     arch64=$2
3445     expr=$3
3446     check_code cc "" "int test[2*($expr) - 1]" &&
3447         subarch=$arch64 || subarch=$arch32
3448 }
3449
3450 case "$arch" in
3451     aarch64|alpha|ia64)
3452         spic=$shared
3453     ;;
3454     mips)
3455         check_64bit mips mips64 '_MIPS_SIM > 1'
3456         spic=$shared
3457     ;;
3458     parisc)
3459         check_64bit parisc parisc64 'sizeof(void *) > 4'
3460         spic=$shared
3461     ;;
3462     ppc)
3463         check_64bit ppc ppc64 'sizeof(void *) > 4'
3464         spic=$shared
3465     ;;
3466     sparc)
3467         check_64bit sparc sparc64 'sizeof(void *) > 4'
3468         spic=$shared
3469     ;;
3470     x86)
3471         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3472         if test "$subarch" = "x86_64"; then
3473             spic=$shared
3474         fi
3475     ;;
3476     ppc)
3477         check_cc <<EOF && subarch="ppc64"
3478         int test[(int)sizeof(char*) - 7];
3479 EOF
3480     ;;
3481 esac
3482
3483 enable $subarch
3484 enabled spic && enable_weak pic
3485
3486 # OS specific
3487 case $target_os in
3488     aix)
3489         SHFLAGS=-shared
3490         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3491         enabled shared && add_ldflags -Wl,-brtl
3492         ;;
3493     haiku)
3494         prefix_default="/boot/common"
3495         network_extralibs="-lnetwork"
3496         host_libs=
3497         ;;
3498     sunos)
3499         SHFLAGS='-shared -Wl,-h,$$(@F)'
3500         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3501         network_extralibs="-lsocket -lnsl"
3502         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3503         # When using suncc to build, the Solaris linker will mark
3504         # an executable with each instruction set encountered by
3505         # the Solaris assembler.  As our libraries contain their own
3506         # guards for processor-specific code, instead suppress
3507         # generation of the HWCAPS ELF section on Solaris x86 only.
3508         enabled_all suncc x86 &&
3509             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3510             add_ldflags -Wl,-M,mapfile
3511         nm_default='nm -P -g'
3512         ;;
3513     netbsd)
3514         disable symver
3515         oss_indev_extralibs="-lossaudio"
3516         oss_outdev_extralibs="-lossaudio"
3517         enabled gcc || check_ldflags -Wl,-zmuldefs
3518         ;;
3519     openbsd|bitrig)
3520         disable symver
3521         SHFLAGS='-shared'
3522         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3523         SLIB_INSTALL_LINKS=
3524         oss_indev_extralibs="-lossaudio"
3525         oss_outdev_extralibs="-lossaudio"
3526         ;;
3527     dragonfly)
3528         disable symver
3529         ;;
3530     freebsd)
3531         ;;
3532     bsd/os)
3533         add_extralibs -lpoll -lgnugetopt
3534         strip="strip -d"
3535         ;;
3536     darwin)
3537         gas="gas-preprocessor.pl $cc"
3538         enabled ppc && add_asflags -force_cpusubtype_ALL
3539         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3540         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3541         strip="${strip} -x"
3542         add_ldflags -Wl,-dynamic,-search_paths_first
3543         SLIBSUF=".dylib"
3544         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3545         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3546         objformat="macho"
3547         enabled x86_64 && objformat="macho64"
3548         enabled_any pic shared ||
3549             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3550         ;;
3551     mingw32*)
3552         if test $target_os = "mingw32ce"; then
3553             disable network
3554         else
3555             target_os=mingw32
3556         fi
3557         LIBTARGET=i386
3558         if enabled x86_64; then
3559             LIBTARGET="i386:x86-64"
3560         elif enabled arm; then
3561             LIBTARGET=arm-wince
3562         fi
3563         check_ldflags -Wl,--nxcompat
3564         check_ldflags -Wl,--dynamicbase
3565         shlibdir_default="$bindir_default"
3566         SLIBPREF=""
3567         SLIBSUF=".dll"
3568         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3569         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3570         dlltool="${cross_prefix}dlltool"
3571         if check_cmd lib.exe -list; then
3572             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3573             if enabled x86_64; then
3574                 LIBTARGET=x64
3575             fi
3576         elif check_cmd $dlltool --version; then
3577             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3578         fi
3579         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3580         SLIB_INSTALL_LINKS=
3581         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3582         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3583         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3584         objformat="win32"
3585         ranlib=:
3586         enable dos_paths
3587         ;;
3588     win32|win64)
3589         if enabled shared; then
3590             # Link to the import library instead of the normal static library
3591             # for shared libs.
3592             LD_LIB='%.lib'
3593             # Cannot build both shared and static libs with MSVC or icl.
3594             disable static
3595         fi
3596         shlibdir_default="$bindir_default"
3597         SLIBPREF=""
3598         SLIBSUF=".dll"
3599         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3600         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3601         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3602         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3603         SLIB_INSTALL_LINKS=
3604         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3605         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3606         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3607         objformat="win32"
3608         ranlib=:
3609         enable dos_paths
3610         ;;
3611     cygwin*)
3612         target_os=cygwin
3613         shlibdir_default="$bindir_default"
3614         SLIBPREF="cyg"
3615         SLIBSUF=".dll"
3616         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3617         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3618         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3619         SLIB_INSTALL_LINKS=
3620         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3621         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3622         objformat="win32"
3623         enable dos_paths
3624         ;;
3625     *-dos|freedos|opendos)
3626         network_extralibs="-lsocket"
3627         objformat="coff"
3628         enable dos_paths
3629         add_cppflags -U__STRICT_ANSI__
3630         ;;
3631     linux)
3632         enable dv1394
3633         ;;
3634     irix*)
3635         target_os=irix
3636         ranlib="echo ignoring ranlib"
3637         ;;
3638     os/2*)
3639         strip="lxlite -CS"
3640         ln_s="cp -f"
3641         objformat="aout"
3642         add_cppflags -D_GNU_SOURCE
3643         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3644         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3645         LIBSUF="_s.a"
3646         SLIBPREF=""
3647         SLIBSUF=".dll"
3648         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3649         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3650         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3651             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3652             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3653             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3654             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3655             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3656         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3657             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3658         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3659         enable dos_paths
3660         enable_weak os2threads
3661         ;;
3662     gnu/kfreebsd)
3663         add_cppflags -D_BSD_SOURCE
3664         ;;
3665     gnu)
3666         ;;
3667     qnx)
3668         add_cppflags -D_QNX_SOURCE
3669         network_extralibs="-lsocket"
3670         ;;
3671     symbian)
3672         SLIBSUF=".dll"
3673         enable dos_paths
3674         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3675         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3676         add_ldflags -Wl,--target1-abs,--no-undefined \
3677                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3678                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3679         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3680                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3681                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3682         ;;
3683     osf1)
3684         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3685         ;;
3686     minix)
3687         ;;
3688     plan9)
3689         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3690                      -D_REENTRANT_SOURCE        \
3691                      -D_RESEARCH_SOURCE         \
3692                      -DFD_SETSIZE=96            \
3693                      -DHAVE_SOCK_OPTS
3694         add_compat strtod.o strtod=avpriv_strtod
3695         network_extralibs='-lbsd'
3696         exeobjs=compat/plan9/main.o
3697         disable ffserver
3698         cp_f='cp'
3699         ;;
3700     none)
3701         ;;
3702     *)
3703         die "Unknown OS '$target_os'."
3704         ;;
3705 esac
3706
3707 # determine libc flavour
3708
3709 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3710 if check_cpp_condition features.h "defined __UCLIBC__"; then
3711     libc_type=uclibc
3712     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3713 elif check_cpp_condition features.h "defined __GLIBC__"; then
3714     libc_type=glibc
3715     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3716 # MinGW headers can be installed on Cygwin, so check for newlib first.
3717 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3718     libc_type=newlib
3719     add_cppflags -U__STRICT_ANSI__
3720 elif check_header _mingw.h; then
3721     libc_type=mingw
3722     check_cpp_condition _mingw.h \
3723         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3724             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3725         die "ERROR: MinGW runtime version must be >= 3.15."
3726     add_cppflags -U__STRICT_ANSI__
3727     if check_cpp_condition _mingw.h "defined(__MINGW64_VERSION_MAJOR) && \
3728             __MINGW64_VERSION_MAJOR < 3"; then
3729         add_compat msvcrt/snprintf.o
3730         add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3731     else
3732         add_cppflags -D__USE_MINGW_ANSI_STDIO=1
3733     fi
3734 elif check_func_headers stdlib.h _get_doserrno; then
3735     libc_type=msvcrt
3736     add_compat strtod.o strtod=avpriv_strtod
3737     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3738                                  _snprintf=avpriv_snprintf  \
3739                                  vsnprintf=avpriv_vsnprintf
3740     # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3741     # 0x601 by default unless something else is set by the user.
3742     # This can easily lead to us detecting functions only present
3743     # in such new versions and producing binaries requiring windows 7.0.
3744     # Therefore explicitly set the default to XP unless the user has
3745     # set something else on the command line.
3746     check_cpp_condition stdlib.h "defined(_WIN32_WINNT)" || add_cppflags -D_WIN32_WINNT=0x0502
3747 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3748     libc_type=klibc
3749 elif check_cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3750     libc_type=bionic
3751     add_compat strtod.o strtod=avpriv_strtod
3752 fi
3753
3754 test -n "$libc_type" && enable $libc_type
3755
3756 # hacks for compiler/libc/os combinations
3757
3758 if enabled_all tms470 glibc; then
3759     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3760     add_cppflags -D__USER_LABEL_PREFIX__=
3761     add_cppflags -D__builtin_memset=memset
3762     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3763     add_cflags   -pds=48    # incompatible redefinition of macro
3764 fi
3765
3766 if enabled_all ccc glibc; then
3767     add_ldflags -Wl,-z,now  # calls to libots crash without this
3768 fi
3769
3770 esc(){
3771     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3772 }
3773
3774 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3775
3776 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3777
3778 set_default $PATHS_LIST
3779 set_default nm
3780
3781 # we need to build at least one lib type
3782 if ! enabled_any static shared; then
3783     cat <<EOF
3784 At least one library type must be built.
3785 Specify --enable-static to build the static libraries or --enable-shared to
3786 build the shared libraries as well. To only build the shared libraries specify
3787 --disable-static in addition to --enable-shared.
3788 EOF
3789     exit 1;
3790 fi
3791
3792 # backward compatibility layer for incompatible_libav/fork_abi
3793 enabled incompatible_fork_abi  && enable incompatible_libav_abi
3794 enabled incompatible_libav_abi && enable incompatible_fork_abi
3795
3796 die_license_disabled() {
3797     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3798 }
3799
3800 die_license_disabled_gpl() {
3801     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3802 }
3803
3804 die_license_disabled gpl frei0r
3805 die_license_disabled gpl libcdio
3806 die_license_disabled gpl libutvideo
3807 die_license_disabled gpl libvidstab
3808 die_license_disabled gpl libx264
3809 die_license_disabled gpl libxavs
3810 die_license_disabled gpl libxvid
3811 die_license_disabled gpl libzvbi
3812 die_license_disabled gpl x11grab
3813
3814 die_license_disabled nonfree libaacplus
3815 die_license_disabled nonfree libfaac
3816 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
3817 enabled gpl && die_license_disabled_gpl nonfree openssl
3818
3819 die_license_disabled version3 libopencore_amrnb
3820 die_license_disabled version3 libopencore_amrwb
3821 die_license_disabled version3 libvo_aacenc
3822 die_license_disabled version3 libvo_amrwbenc
3823
3824 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3825
3826 disabled optimizations || check_cflags -fomit-frame-pointer
3827
3828 enable_weak_pic() {
3829     disabled pic && return
3830     enable pic
3831     add_cppflags -DPIC
3832     case "$target_os" in
3833     mingw*|cygwin*)
3834         ;;
3835     *)
3836         add_cflags -fPIC
3837         ;;
3838     esac
3839     add_asflags  -fPIC
3840 }
3841
3842 enabled pic && enable_weak_pic
3843
3844 check_cc <<EOF || die "Symbol mangling check failed."
3845 int ff_extern;
3846 EOF
3847 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3848 extern_prefix=${sym%%ff_extern*}
3849
3850 check_cc <<EOF && enable_weak inline_asm
3851 void foo(void) { __asm__ volatile ("" ::); }
3852 EOF
3853
3854 _restrict=
3855 for restrict_keyword in restrict __restrict__ __restrict; do
3856     check_cc <<EOF && _restrict=$restrict_keyword && break
3857 void foo(char * $restrict_keyword p);
3858 EOF
3859 done
3860
3861 check_cc <<EOF && enable pragma_deprecated
3862 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3863 EOF
3864
3865 check_cc <<EOF && enable attribute_packed
3866 struct { int x; } __attribute__((packed)) x;
3867 EOF
3868
3869 check_cc <<EOF && enable attribute_may_alias
3870 union { int x; } __attribute__((may_alias)) x;
3871 EOF
3872
3873 check_cc <<EOF || die "endian test failed"
3874 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3875 EOF
3876 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3877
3878 check_inline_asm inline_asm_labels '"1:\n"'
3879
3880 if enabled alpha; then
3881
3882     check_cflags -mieee
3883
3884 elif enabled arm; then
3885
3886     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
3887 float func(float a, float b){ return a+b; }
3888 EOF
3889
3890     enabled thumb && check_cflags -mthumb || check_cflags -marm
3891     nogas=die
3892
3893     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3894         enable vfp_args
3895     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3896         case "${cross_prefix:-$cc}" in
3897             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3898             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3899 __asm__ (".eabi_attribute 28, 1");
3900 int main(void) { return 0; }
3901 EOF
3902         esac
3903         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3904     fi
3905
3906     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3907     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3908     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3909     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3910     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3911     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3912
3913     [ $target_os = linux ] ||
3914         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3915             $ARCH_EXT_LIST_ARM
3916
3917     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3918     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3919
3920     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3921
3922 elif enabled mips; then
3923
3924     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3925     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
3926      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
3927     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
3928      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
3929     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
3930      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
3931     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
3932      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
3933
3934 elif enabled parisc; then
3935
3936     if enabled gcc; then
3937         case $($cc -dumpversion) in
3938             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3939         esac
3940     fi
3941
3942 elif enabled ppc; then
3943
3944     enable local_aligned_8 local_aligned_16
3945
3946     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3947     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3948     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3949     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3950
3951     # AltiVec flags: The FSF version of GCC differs from the Apple version
3952     if enabled altivec; then
3953         if ! enabled_any pic ppc64; then
3954             nogas=warn
3955         fi
3956         check_cflags -maltivec -mabi=altivec &&
3957         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3958         check_cflags -faltivec
3959
3960         # check if our compiler supports Motorola AltiVec C API
3961         check_cc <<EOF || disable altivec
3962 $inc_altivec_h
3963 int main(void) {
3964     vector signed int v1 = (vector signed int) { 0 };
3965     vector signed int v2 = (vector signed int) { 1 };
3966     v1 = vec_add(v1, v2);
3967     return 0;
3968 }
3969 EOF
3970
3971         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3972     fi
3973
3974 elif enabled sparc; then
3975
3976     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3977
3978 elif enabled x86; then
3979
3980     check_builtin rdtsc    intrin.h   "__rdtsc()"
3981     check_builtin mm_empty mmintrin.h "_mm_empty()"
3982
3983     enable local_aligned_8 local_aligned_16
3984
3985     # check whether EBP is available on x86
3986     # As 'i' is stored on the stack, this program will crash
3987     # if the base pointer is used to access it because the
3988     # base pointer is cleared in the inline assembly code.
3989     check_exec_crash <<EOF && enable ebp_available
3990 volatile int i=0;
3991 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3992 return i;
3993 EOF
3994
3995     # check whether EBX is available on x86
3996     check_inline_asm ebx_available '""::"b"(0)' &&
3997         check_inline_asm ebx_available '"":::"%ebx"'
3998
3999     # check whether xmm clobbers are supported
4000     check_inline_asm xmm_clobbers '"":::"%xmm0"'
4001
4002     # check whether binutils is new enough to compile SSSE3/MMXEXT
4003     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
4004     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
4005
4006     if ! disabled_any asm mmx yasm; then
4007         if check_cmd $yasmexe --version; then
4008             enabled x86_64 && yasm_extra="-m amd64"
4009             yasm_debug="-g dwarf2"
4010         elif check_cmd nasm -v; then
4011             yasmexe=nasm
4012             yasm_debug="-g -F dwarf"
4013             enabled x86_64 && test "$objformat" = elf && objformat=elf64
4014         fi
4015
4016         YASMFLAGS="-f $objformat $yasm_extra"
4017         enabled pic               && append YASMFLAGS "-DPIC"
4018         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4019         case "$objformat" in
4020             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4021         esac
4022
4023         check_yasm "movbe ecx, [5]" && enable yasm ||
4024             die "yasm/nasm not found or too old. Use --disable-yasm for a crippled build."
4025         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
4026         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4027         check_yasm "CPU amdnop" && enable cpunop
4028     fi
4029
4030     case "$cpu" in
4031         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4032             disable fast_clz
4033         ;;
4034     esac
4035
4036 fi
4037
4038 if enabled asm; then
4039     as=${gas:=$as}
4040     check_as <<EOF && enable gnu_as || \
4041         $nogas "GNU assembler not found, install gas-preprocessor"
4042 .macro m n
4043 \n: .int 0
4044 .endm
4045 m x
4046 EOF
4047 fi
4048
4049 check_ldflags -Wl,--as-needed
4050
4051 if check_func dlopen; then
4052     ldl=
4053 elif check_func dlopen -ldl; then
4054     ldl=-ldl
4055 fi
4056
4057 if ! disabled network; then
4058     check_type "sys/types.h sys/socket.h" socklen_t
4059     check_type netdb.h "struct addrinfo"
4060     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4061     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4062     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4063     check_type netinet/in.h "struct sockaddr_in6"
4064     check_type poll.h "struct pollfd"
4065     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4066     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4067     check_type netinet/sctp.h "struct sctp_event_subscribe"
4068     check_func getaddrinfo $network_extralibs
4069     check_func getservbyport $network_extralibs
4070     # Prefer arpa/inet.h over winsock2
4071     if check_header arpa/inet.h ; then
4072         check_func closesocket
4073     elif check_header winsock2.h ; then
4074         check_func_headers winsock2.h closesocket -lws2 &&
4075             network_extralibs="-lws2" ||
4076         { check_func_headers winsock2.h closesocket -lws2_32 &&
4077             network_extralibs="-lws2_32"; }
4078         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4079         check_type ws2tcpip.h socklen_t
4080         check_type ws2tcpip.h "struct addrinfo"
4081         check_type ws2tcpip.h "struct group_source_req"
4082         check_type ws2tcpip.h "struct ip_mreq_source"
4083         check_type ws2tcpip.h "struct ipv6_mreq"
4084         check_type winsock2.h "struct pollfd"
4085         check_type ws2tcpip.h "struct sockaddr_in6"
4086         check_type ws2tcpip.h "struct sockaddr_storage"
4087         check_struct winsock2.h "struct sockaddr" sa_len
4088     else
4089         disable network
4090     fi
4091 fi
4092
4093 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4094 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4095
4096 check_func  access
4097 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4098 check_func  fcntl
4099 check_func  fork
4100 check_func_headers stdlib.h getenv
4101 check_func  gethrtime
4102 check_func  getopt
4103 check_func  getrusage
4104 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4105 check_func  gettimeofday
4106 check_func  inet_aton $network_extralibs
4107 check_func  isatty
4108 check_func  localtime_r
4109 check_func  ${malloc_prefix}memalign            && enable memalign
4110 check_func  mkstemp
4111 check_func  mmap
4112 check_func  mprotect
4113 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4114 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4115 check_func  setrlimit
4116 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4117 check_func  strerror_r
4118 check_func  sched_getaffinity
4119 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4120 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4121 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4122 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4123 check_builtin sarestart signal.h "SA_RESTART"
4124 check_func  sysconf
4125 check_func  sysctl
4126 check_func  usleep
4127 check_func_headers conio.h kbhit
4128 check_func_headers windows.h PeekNamedPipe
4129 check_func_headers io.h setmode
4130 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4131 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4132 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4133 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4134 check_func_headers windows.h GetProcessAffinityMask
4135 check_func_headers windows.h GetProcessTimes
4136 check_func_headers windows.h GetSystemTimeAsFileTime
4137 check_func_headers windows.h MapViewOfFile
4138 check_func_headers windows.h SetConsoleTextAttribute
4139 check_func_headers windows.h Sleep
4140 check_func_headers windows.h VirtualAlloc
4141 check_func_headers glob.h glob
4142 check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4143
4144 check_header cl/cl.h
4145 check_header direct.h
4146 check_header dlfcn.h
4147 check_header dxva.h
4148 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4149 check_header io.h
4150 check_header libcrystalhd/libcrystalhd_if.h
4151 check_header malloc.h
4152 check_header poll.h
4153 check_header sys/mman.h
4154 check_header sys/param.h
4155 check_header sys/resource.h
4156 check_header sys/select.h
4157 check_header sys/time.h
4158 check_header sys/un.h
4159 check_header termios.h
4160 check_header unistd.h
4161 check_header vdpau/vdpau.h
4162 check_header vdpau/vdpau_x11.h
4163 check_header VideoDecodeAcceleration/VDADecoder.h
4164 check_header windows.h
4165 check_header X11/extensions/XvMClib.h
4166 check_header asm/types.h
4167
4168 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4169 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4170
4171 if ! disabled w32threads && ! enabled pthreads; then
4172     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
4173 fi
4174
4175 # check for some common methods of building with pthread support
4176 # do this before the optional library checks as some of them require pthreads
4177 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4178     enable pthreads
4179     if check_func pthread_create; then
4180         :
4181     elif check_func pthread_create -pthread; then
4182         add_cflags -pthread
4183         add_extralibs -pthread
4184     elif check_func pthread_create -pthreads; then
4185         add_cflags -pthreads
4186         add_extralibs -pthreads
4187     elif check_func pthread_create -lpthreadGC2; then
4188         add_extralibs -lpthreadGC2
4189     elif ! check_lib pthread.h pthread_create -lpthread; then
4190         disable pthreads
4191     fi
4192 fi
4193
4194 for thread in $THREADS_LIST; do
4195     if enabled $thread; then
4196         test -n "$thread_type" &&
4197             die "ERROR: Only one thread type must be selected." ||
4198             thread_type="$thread"
4199     fi
4200 done
4201
4202 if enabled pthreads; then
4203   check_func pthread_cancel
4204 fi
4205
4206 enabled sync_val_compare_and_swap && enable atomics_gcc
4207 enabled_all atomic_cas_ptr machine_rw_barrier && enable atomics_suncc
4208 enabled MemoryBarrier && enable atomics_win32
4209
4210 check_lib math.h sin -lm && LIBM="-lm"
4211 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4212
4213 atan2f_args=2
4214 ldexpf_args=2
4215 powf_args=2
4216
4217 for func in $MATH_FUNCS; do
4218     eval check_mathfunc $func \${${func}_args:-1}
4219 done
4220
4221 # these are off by default, so fail if requested and not available
4222 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4223                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4224                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4225 enabled fontconfig        && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4226 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4227 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4228 enabled ladspa            && { check_header ladspa.h || die "ERROR: ladspa.h header not found"; }
4229 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4230 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4231 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4232 enabled libbluray         && require libbluray libbluray/bluray.h bd_open -lbluray
4233 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4234                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4235                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4236 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4237 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4238 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4239 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"
4240 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4241 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
4242 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4243 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4244                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4245                                done || die "ERROR: libgsm not found"; }
4246 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4247 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4248 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4249 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4250 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4251 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4252 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4253 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg ||
4254                                check_lib openjpeg.h opj_version -lopenjpeg ||
4255                                die "ERROR: libopenjpeg not found"; }
4256 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4257 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4258 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4259 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4260 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4261 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4262 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4263 enabled libssh            && require_pkg_config libssh libssh/sftp.h sftp_init
4264 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4265 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4266     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4267     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4268 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4269 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4270                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4271                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4272 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4273 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4274 enabled libvidstab        && require_pkg_config vidstab vid.stab/libvidstab.h vsMotionDetectInit
4275 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4276 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4277 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4278 enabled libvpx            && {
4279     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4280                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4281     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 ||
4282                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4283     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4284     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4285 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4286 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4287                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4288                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4289 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4290 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4291 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4292 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4293 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4294                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4295                                die "ERROR: openal not found"; } &&
4296                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4297                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4298 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4299                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4300                                die "ERROR: opencl not found"; } &&
4301                              { ! enabled_any w32threads os2threads ||
4302                                die "opencl currently needs --enable-pthreads or --disable-w32threads"; } &&
4303                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4304                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4305                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4306 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4307                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4308                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4309                                die "ERROR: openssl not found"; }
4310
4311 if enabled gnutls; then
4312     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4313     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4314 fi
4315
4316 # libdc1394 check
4317 if enabled libdc1394; then
4318     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4319         enable libdc1394_2; } ||
4320     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4321         enable libdc1394_1; } ||
4322     die "ERROR: No version of libdc1394 found "
4323 fi
4324
4325 SDL_CONFIG="${cross_prefix}sdl-config"
4326 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4327     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4328     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4329     enable sdl
4330 else
4331   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4332     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4333     sdl_libs=$("${SDL_CONFIG}" --libs)
4334     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4335     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4336     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4337     enable sdl
4338   fi
4339 fi
4340 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4341
4342 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4343 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4344 perl --version > /dev/null 2>&1 && enable perl || disable perl
4345 pod2man --help > /dev/null 2>&1 && enable pod2man || disable pod2man
4346 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4347
4348 check_header linux/fb.h
4349 check_header linux/videodev.h
4350 check_header linux/videodev2.h
4351 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
4352
4353 check_header sys/videoio.h
4354
4355 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4356 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4357 # w32api 3.12 had it defined wrong
4358 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4359
4360 check_type "dshow.h" IBaseFilter
4361
4362 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4363 { check_header dev/bktr/ioctl_meteor.h &&
4364   check_header dev/bktr/ioctl_bt848.h; } ||
4365 { check_header machine/ioctl_meteor.h &&
4366   check_header machine/ioctl_bt848.h; } ||
4367 { check_header dev/video/meteor/ioctl_meteor.h &&
4368   check_header dev/video/bktr/ioctl_bt848.h; } ||
4369 check_header dev/ic/bt8xx.h
4370
4371 check_header sndio.h
4372 if check_struct sys/soundcard.h audio_buf_info bytes; then
4373     enable_safe sys/soundcard.h
4374 else
4375     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
4376     #include <sys/soundcard.h>
4377     audio_buf_info abc;
4378 EOF
4379 fi
4380 check_header soundcard.h
4381
4382 enabled_any alsa_indev alsa_outdev &&
4383     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4384
4385 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
4386     check_func jack_port_get_latency_range -ljack
4387
4388 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4389
4390 if enabled libcdio; then
4391     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4392     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4393     die "ERROR: libcdio-paranoia not found"
4394 fi
4395
4396 enabled x11grab                                           &&
4397 require X11 X11/Xlib.h XOpenDisplay -lX11                 &&
4398 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4399 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
4400
4401 enabled vaapi &&
4402     check_lib va/va.h vaInitialize -lva ||
4403     disable vaapi
4404
4405 enabled vdpau &&
4406     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4407     disable vdpau
4408
4409 # Funny iconv installations are not unusual, so check it after all flags have been set
4410 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
4411
4412 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4413
4414 # add some useful compiler flags if supported
4415 check_cflags -Wdeclaration-after-statement
4416 check_cflags -Wall
4417 check_cflags -Wno-parentheses
4418 check_cflags -Wno-switch
4419 check_cflags -Wno-format-zero-length
4420 check_cflags -Wdisabled-optimization
4421 check_cflags -Wpointer-arith
4422 check_cflags -Wredundant-decls
4423 check_cflags -Wno-pointer-sign
4424 check_cflags -Wwrite-strings
4425 check_cflags -Wtype-limits
4426 check_cflags -Wundef
4427 check_cflags -Wmissing-prototypes
4428 check_cflags -Wno-pointer-to-int-cast
4429 check_cflags -Wstrict-prototypes
4430 enabled extra_warnings && check_cflags -Winline
4431
4432 # add some linker flags
4433 check_ldflags -Wl,--warn-common
4434 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4435 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4436
4437 enabled xmm_clobber_test &&
4438     check_ldflags -Wl,--wrap,avcodec_open2              \
4439                   -Wl,--wrap,avcodec_decode_audio4      \
4440                   -Wl,--wrap,avcodec_decode_video2      \
4441                   -Wl,--wrap,avcodec_decode_subtitle2   \
4442                   -Wl,--wrap,avcodec_encode_audio2      \
4443                   -Wl,--wrap,avcodec_encode_video       \
4444                   -Wl,--wrap,avcodec_encode_video2      \
4445                   -Wl,--wrap,avcodec_encode_subtitle    \
4446                   -Wl,--wrap,sws_scale ||
4447     disable xmm_clobber_test
4448
4449 echo "X{};" > $TMPV
4450 if test_ldflags -Wl,--version-script,$TMPV; then
4451     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4452     check_cc <<EOF && enable symver_asm_label
4453 void ff_foo(void) __asm__ ("av_foo@VERSION");
4454 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4455 EOF
4456     check_cc <<EOF && enable symver_gnu_asm
4457 __asm__(".symver ff_foo,av_foo@VERSION");
4458 void ff_foo(void) {}
4459 EOF
4460 fi
4461
4462 if [ -z "$optflags" ]; then
4463     if enabled small; then
4464         optflags=$cflags_size
4465     elif enabled optimizations; then
4466         optflags=$cflags_speed
4467     else
4468         optflags=$cflags_noopt
4469     fi
4470 fi
4471
4472 check_optflags(){
4473     check_cflags "$@"
4474     enabled lto && check_ldflags "$@"
4475 }
4476
4477
4478 if enabled lto; then
4479     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4480     check_cflags  -flto
4481     check_ldflags -flto $cpuflags
4482 fi
4483
4484 check_optflags $optflags
4485 check_optflags -fno-math-errno
4486 check_optflags -fno-signed-zeros
4487
4488 enabled ftrapv && check_cflags -ftrapv
4489
4490 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
4491 int x;
4492 EOF
4493
4494
4495 if enabled icc; then
4496     # Just warnings, no remarks
4497     check_cflags -w1
4498     # -wd: Disable following warnings
4499     # 144, 167, 556: -Wno-pointer-sign
4500     # 188: enumerated type mixed with another type
4501     # 1292: attribute "foo" ignored
4502     # 1419: external declaration in primary source file
4503     # 10006: ignoring unknown option -fno-signed-zeros
4504     # 10148: ignoring unknown option -Wno-parentheses
4505     # 10156: ignoring option '-W'; no argument required
4506     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156
4507     # 11030: Warning unknown option --as-needed
4508     # 10156: ignoring option '-export'; no argument required
4509     check_ldflags -wd10156,11030
4510     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4511     enable ebp_available
4512     if enabled x86_32; then
4513         icc_version=$($cc -dumpversion)
4514         test ${icc_version%%.*} -ge 11 &&
4515             check_cflags -falign-stack=maintain-16-byte ||
4516             disable aligned_stack
4517     fi
4518 elif enabled ccc; then
4519     # disable some annoying warnings
4520     add_cflags -msg_disable bitnotint
4521     add_cflags -msg_disable mixfuncvoid
4522     add_cflags -msg_disable nonstandcast
4523     add_cflags -msg_disable unsupieee
4524 elif enabled gcc; then
4525     check_optflags -fno-tree-vectorize
4526     check_cflags -Werror=implicit-function-declaration
4527     check_cflags -Werror=missing-prototypes
4528     check_cflags -Werror=return-type
4529     check_cflags -Werror=vla
4530 elif enabled llvm_gcc; then
4531     check_cflags -mllvm -stack-alignment=16
4532 elif enabled clang; then
4533     check_cflags -mllvm -stack-alignment=16
4534     check_cflags -Qunused-arguments
4535     check_cflags -Werror=implicit-function-declaration
4536     check_cflags -Werror=missing-prototypes
4537     check_cflags -Werror=return-type
4538 elif enabled cparser; then
4539     add_cflags -Wno-missing-variable-declarations
4540     add_cflags -Wno-empty-statement
4541 elif enabled armcc; then
4542     # 2523: use of inline assembler is deprecated
4543     add_cflags -W${armcc_opt},--diag_suppress=2523
4544     add_cflags -W${armcc_opt},--diag_suppress=1207
4545     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4546     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4547     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4548     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4549 elif enabled tms470; then
4550     add_cflags -pds=824 -pds=837
4551 elif enabled pathscale; then
4552     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4553 elif enabled_any msvc icl; then
4554     enabled x86_32 && disable aligned_stack
4555     enabled_all x86_32 debug && add_cflags -Oy-
4556     enabled debug && add_ldflags -debug
4557     enable pragma_deprecated
4558     if enabled icl; then
4559         # -Qansi-alias is basically -fstrict-aliasing, but does not work
4560         # (correctly) on icl 13.x.
4561         check_cpp_condition "windows.h" "__ICL < 1300 || __ICL >= 1400" &&
4562             add_cflags -Qansi-alias
4563         # icl will pass the inline asm tests but inline asm is currently
4564         # not supported (build will fail)
4565         disabled inline_asm || warn "inline asm disabled due to issues with it in ICL"
4566         disable inline_asm
4567     fi
4568 fi
4569
4570 case $target_os in
4571     osf1)
4572         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4573     ;;
4574     plan9)
4575         add_cppflags -Dmain=plan9_main
4576     ;;
4577 esac
4578
4579 enable frame_thread_encoder
4580 enabled_any $THREADS_LIST      && enable threads
4581 enabled_any $ATOMICS_LIST      && enable atomics_native
4582
4583 enabled threads && ! enabled pthreads && ! enabled atomics_native && die "non pthread threading without atomics not supported, try adding --enable-pthreads or --cpu=i486 or higher if you are on x86"
4584
4585 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4586
4587 check_deps $CONFIG_LIST       \
4588            $CONFIG_EXTRA      \
4589            $HAVE_LIST         \
4590            $ALL_COMPONENTS    \
4591
4592
4593 if test $target_os = "haiku"; then
4594     disable memalign
4595     disable posix_memalign
4596 fi
4597
4598 ! enabled_any memalign posix_memalign aligned_malloc &&
4599     enabled_any $need_memalign && enable memalign_hack
4600
4601 # add_dep lib dep
4602 # -> enable ${lib}_deps_${dep}
4603 # -> add $dep to ${lib}_deps only once
4604 add_dep() {
4605     lib=$1
4606     dep=$2
4607     enabled "${lib}_deps_${dep}" && return 0
4608     enable  "${lib}_deps_${dep}"
4609     prepend "${lib}_deps" $dep
4610 }
4611
4612 # merge deps lib components
4613 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
4614 merge_deps() {
4615     lib=$1
4616     shift
4617     for comp in $*; do
4618         enabled $comp || continue
4619         eval "dep=\"\$${comp}_deps\""
4620         for d in $dep; do
4621             add_dep $lib $d
4622         done
4623     done
4624 }
4625
4626 merge_deps libavfilter $FILTER_LIST
4627
4628 echo "install prefix            $prefix"
4629 echo "source path               $source_path"
4630 echo "C compiler                $cc"
4631 echo "ARCH                      $arch ($cpu)"
4632 if test "$build_suffix" != ""; then
4633     echo "build suffix              $build_suffix"
4634 fi
4635 if test "$progs_suffix" != ""; then
4636     echo "progs suffix              $progs_suffix"
4637 fi
4638 if test "$extra_version" != ""; then
4639     echo "version string suffix     $extra_version"
4640 fi
4641 echo "big-endian                ${bigendian-no}"
4642 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4643 if enabled x86; then
4644     echo "${yasmexe}                      ${yasm-no}"
4645     echo "MMX enabled               ${mmx-no}"
4646     echo "MMXEXT enabled            ${mmxext-no}"
4647     echo "3DNow! enabled            ${amd3dnow-no}"
4648     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4649     echo "SSE enabled               ${sse-no}"
4650     echo "SSSE3 enabled             ${ssse3-no}"
4651     echo "AVX enabled               ${avx-no}"
4652     echo "FMA4 enabled              ${fma4-no}"
4653     echo "i686 features enabled     ${i686-no}"
4654     echo "CMOV is fast              ${fast_cmov-no}"
4655     echo "EBX available             ${ebx_available-no}"
4656     echo "EBP available             ${ebp_available-no}"
4657 fi
4658 if enabled arm; then
4659     echo "ARMv5TE enabled           ${armv5te-no}"
4660     echo "ARMv6 enabled             ${armv6-no}"
4661     echo "ARMv6T2 enabled           ${armv6t2-no}"
4662     echo "VFP enabled               ${vfp-no}"
4663     echo "NEON enabled              ${neon-no}"
4664     echo "THUMB enabled             ${thumb-no}"
4665 fi
4666 if enabled mips; then
4667     echo "MIPS FPU enabled          ${mipsfpu-no}"
4668     echo "MIPS32R2 enabled          ${mips32r2-no}"
4669     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
4670     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
4671 fi
4672 if enabled ppc; then
4673     echo "AltiVec enabled           ${altivec-no}"
4674     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4675     echo "dcbzl available           ${dcbzl-no}"
4676 fi
4677 if enabled sparc; then
4678     echo "VIS enabled               ${vis-no}"
4679 fi
4680 echo "debug symbols             ${debug-no}"
4681 echo "strip symbols             ${stripping-no}"
4682 echo "optimize for size         ${small-no}"
4683 echo "optimizations             ${optimizations-no}"
4684 echo "static                    ${static-no}"
4685 echo "shared                    ${shared-no}"
4686 echo "postprocessing support    ${postproc-no}"
4687 echo "new filter support        ${avfilter-no}"
4688 echo "network support           ${network-no}"
4689 echo "threading support         ${thread_type-no}"
4690 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4691 echo "SDL support               ${sdl-no}"
4692 echo "opencl enabled            ${opencl-no}"
4693 echo "libzvbi enabled           ${libzvbi-no}"
4694 echo "texi2html enabled         ${texi2html-no}"
4695 echo "perl enabled              ${perl-no}"
4696 echo "pod2man enabled           ${pod2man-no}"
4697 echo "makeinfo enabled          ${makeinfo-no}"
4698 test -n "$random_seed" &&
4699     echo "random seed               ${random_seed}"
4700 echo
4701
4702 echo "External libraries:"
4703 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4704 echo
4705
4706 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4707     echo "Enabled ${type}s:"
4708     eval list=\$$(toupper $type)_LIST
4709     print_enabled '_*' $list | print_3_columns
4710     echo
4711 done
4712
4713 license="LGPL version 2.1 or later"
4714 if enabled nonfree; then
4715     license="nonfree and unredistributable"
4716 elif enabled gplv3; then
4717     license="GPL version 3 or later"
4718 elif enabled lgplv3; then
4719     license="LGPL version 3 or later"
4720 elif enabled gpl; then
4721     license="GPL version 2 or later"
4722 fi
4723
4724 echo "License: $license"
4725
4726 echo "Creating config.mak, config.h, and doc/config.texi..."
4727
4728 test -e Makefile || $ln_s "$source_path/Makefile" .
4729
4730 enabled stripping || strip="echo skipping strip"
4731
4732 config_files="$TMPH config.mak doc/config.texi"
4733
4734 cat > config.mak <<EOF
4735 # Automatically generated by configure - do not modify!
4736 ifndef FFMPEG_CONFIG_MAK
4737 FFMPEG_CONFIG_MAK=1
4738 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
4739 prefix=$prefix
4740 LIBDIR=\$(DESTDIR)$libdir
4741 SHLIBDIR=\$(DESTDIR)$shlibdir
4742 INCDIR=\$(DESTDIR)$incdir
4743 BINDIR=\$(DESTDIR)$bindir
4744 DATADIR=\$(DESTDIR)$datadir
4745 DOCDIR=\$(DESTDIR)$docdir
4746 MANDIR=\$(DESTDIR)$mandir
4747 SRC_PATH=$source_path
4748 ifndef MAIN_MAKEFILE
4749 SRC_PATH:=\$(SRC_PATH:.%=..%)
4750 endif
4751 CC_IDENT=$cc_ident
4752 ARCH=$arch
4753 CC=$cc
4754 CXX=$cxx
4755 AS=$as
4756 LD=$ld
4757 DEPCC=$dep_cc
4758 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4759 DEPAS=$as
4760 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4761 YASM=$yasmexe
4762 DEPYASM=$yasmexe
4763 AR=$ar
4764 ARFLAGS=$arflags
4765 AR_O=$ar_o
4766 RANLIB=$ranlib
4767 STRIP=$strip
4768 CP=cp -p