Merge commit 'e5d45e028cf4193b562075897e55091779e49f15'
[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-libaacplus      enable AAC+ encoding via libaacplus [no]
197   --enable-libass          enable libass subtitles rendering [no]
198   --enable-libbluray       enable BluRay reading using libbluray [no]
199   --enable-libcaca         enable textual display using libcaca
200   --enable-libcelt         enable CELT decoding via libcelt [no]
201   --enable-libcdio         enable audio CD grabbing with libcdio
202   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
203                            and libraw1394 [no]
204   --enable-libfaac         enable AAC encoding via libfaac [no]
205   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
206   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
207   --enable-libfreetype     enable libfreetype [no]
208   --enable-libgme          enable Game Music Emu via libgme [no]
209   --enable-libgsm          enable GSM de/encoding via libgsm [no]
210   --enable-libiec61883     enable iec61883 via libiec61883 [no]
211   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
212   --enable-libmodplug      enable ModPlug via libmodplug [no]
213   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
214   --enable-libnut          enable NUT (de)muxing via libnut,
215                            native (de)muxer exists [no]
216   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
217   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
218   --enable-libopencv       enable video filtering via libopencv [no]
219   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
220   --enable-libopus         enable Opus decoding via libopus [no]
221   --enable-libpulse        enable Pulseaudio input via libpulse [no]
222   --enable-libquvi         enable quvi input via libquvi [no]
223   --enable-librtmp         enable RTMP[E] support via librtmp [no]
224   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
225   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
226   --enable-libsoxr         enable Include libsoxr resampling [no]
227   --enable-libspeex        enable Speex de/encoding via libspeex [no]
228   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
229   --enable-libtheora       enable Theora encoding via libtheora [no]
230   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
231   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
232   --enable-libv4l2         enable libv4l2/v4l-utils [no]
233   --enable-libvidstab      enable video stabilization using vid.stab [no]
234   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
235   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
236   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
237                            native implementation exists [no]
238   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
239   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
240   --enable-libx264         enable H.264 encoding via x264 [no]
241   --enable-libxavs         enable AVS encoding via xavs [no]
242   --enable-libxvid         enable Xvid encoding via xvidcore,
243                            native MPEG-4/Xvid encoder exists [no]
244   --enable-libzmq          enable message passing via libzmq [no]
245   --enable-libzvbi         enable teletext support via libzvbi [no]
246   --enable-openal          enable OpenAL 1.1 capture support [no]
247   --enable-opencl          enable OpenCL code
248   --enable-openssl         enable openssl [no]
249   --enable-x11grab         enable X11 grabbing [no]
250   --disable-zlib           disable zlib [autodetect]
251
252 Advanced options (experts only):
253   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
254   --enable-cross-compile   assume a cross-compiler is used
255   --sysroot=PATH           root of cross-build tree
256   --sysinclude=PATH        location of cross-build system headers
257   --target-os=OS           compiler targets OS [$target_os]
258   --target-exec=CMD        command to run executables on target
259   --target-path=DIR        path to view of build directory on target
260   --target-samples=DIR     path to samples directory on target
261   --toolchain=NAME         set tool defaults according to NAME
262   --nm=NM                  use nm tool NM [$nm_default]
263   --ar=AR                  use archive tool AR [$ar_default]
264   --as=AS                  use assembler AS [$as_default]
265   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
266   --cc=CC                  use C compiler CC [$cc_default]
267   --cxx=CXX                use C compiler CXX [$cxx_default]
268   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
269   --ld=LD                  use linker LD [$ld_default]
270   --host-cc=HOSTCC         use host C compiler HOSTCC
271   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
272   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
273   --host-ld=HOSTLD         use host linker HOSTLD
274   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
275   --host-libs=HLIBS        use libs HLIBS when linking for host
276   --host-os=OS             compiler host OS [$target_os]
277   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
278   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
279   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
280   --extra-libs=ELIBS       add ELIBS [$ELIBS]
281   --extra-version=STRING   version string suffix []
282   --optflags=OPTFLAGS      override optimization-related compiler flags
283   --build-suffix=SUFFIX    library name suffix []
284   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
285   --progs-suffix=SUFFIX    program name suffix []
286   --arch=ARCH              select architecture [$arch]
287   --cpu=CPU                select the minimum required CPU (affects
288                            instruction selection, may crash on older CPUs)
289   --enable-pic             build position-independent code
290   --enable-sram            allow use of on-chip SRAM
291   --enable-thumb           compile for Thumb instruction set
292   --disable-symver         disable symbol versioning
293   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
294   --disable-safe-bitstream-reader
295                            disable buffer boundary checking in bitreaders
296                            (faster, but may crash)
297   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
298   --enable-lto             use link-time optimization
299
300 Optimization options (experts only):
301   --disable-asm            disable all assembler optimizations
302   --disable-altivec        disable AltiVec optimizations
303   --disable-amd3dnow       disable 3DNow! optimizations
304   --disable-amd3dnowext    disable 3DNow! extended optimizations
305   --disable-mmx            disable MMX optimizations
306   --disable-mmxext         disable MMXEXT optimizations
307   --disable-sse            disable SSE optimizations
308   --disable-sse2           disable SSE2 optimizations
309   --disable-sse3           disable SSE3 optimizations
310   --disable-ssse3          disable SSSE3 optimizations
311   --disable-sse4           disable SSE4 optimizations
312   --disable-sse42          disable SSE4.2 optimizations
313   --disable-avx            disable AVX optimizations
314   --disable-fma4           disable FMA4 optimizations
315   --disable-armv5te        disable armv5te optimizations
316   --disable-armv6          disable armv6 optimizations
317   --disable-armv6t2        disable armv6t2 optimizations
318   --disable-vfp            disable VFP optimizations
319   --disable-neon           disable NEON optimizations
320   --disable-vis            disable VIS optimizations
321   --disable-inline-asm     disable use of inline assembler
322   --disable-yasm           disable use of yasm assembler
323   --disable-mips32r2       disable MIPS32R2 optimizations
324   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
325   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
326   --disable-mipsfpu        disable floating point MIPS optimizations
327   --disable-fast-unaligned consider unaligned accesses slow
328
329 Developer options (useful when working on FFmpeg itself):
330   --disable-debug          disable debugging symbols
331   --enable-debug=LEVEL     set the debug level [$debuglevel]
332   --disable-optimizations  disable compiler optimizations
333   --enable-extra-warnings  enable more compiler warnings
334   --disable-stripping      disable stripping of executables and shared libraries
335   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
336                            2 causes a slowdown at runtime.
337   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
338   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
339                            leaks and errors, using the specified valgrind binary.
340                            Cannot be combined with --target-exec
341   --enable-ftrapv          Trap arithmetic overflows
342   --samples=PATH           location of test samples for FATE, if not set use
343                            \$FATE_SAMPLES at make invocation time.
344   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
345                            should be used only for debugging purposes)
346   --enable-random          randomly enable/disable components
347   --disable-random
348   --enable-random=LIST     randomly enable/disable specific components or
349   --disable-random=LIST    component groups. LIST is a comma-separated list
350                            of NAME[:PROB] entries where NAME is a component
351                            (group) and PROB the probability associated with
352                            NAME (default 0.5).
353   --random-seed=VALUE      seed value for --enable/disable-random
354
355 NOTE: Object files are built at the place where configure is launched.
356 EOF
357   exit 0
358 }
359
360 quotes='""'
361
362 log(){
363     echo "$@" >> $logfile
364 }
365
366 log_file(){
367     log BEGIN $1
368     pr -n -t $1 >> $logfile
369     log END $1
370 }
371
372 echolog(){
373     log "$@"
374     echo "$@"
375 }
376
377 warn(){
378     log "WARNING: $*"
379     WARNINGS="${WARNINGS}WARNING: $*\n"
380 }
381
382 die(){
383     echolog "$@"
384     cat <<EOF
385
386 If you think configure made a mistake, make sure you are using the latest
387 version from Git.  If the latest version fails, report the problem to the
388 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
389 EOF
390     if disabled logging; then
391         cat <<EOF
392 Rerun configure with logging enabled (do not use --disable-logging), and
393 include the log this produces with your report.
394 EOF
395     else
396         cat <<EOF
397 Include the log file "$logfile" produced by configure as this will help
398 solving the problem.
399 EOF
400     fi
401     exit 1
402 }
403
404 # Avoid locale weirdness, besides we really just want to translate ASCII.
405 toupper(){
406     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
407 }
408
409 tolower(){
410     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
411 }
412
413 c_escape(){
414     echo "$*" | sed 's/["\\]/\\\0/g'
415 }
416
417 sh_quote(){
418     v=$(echo "$1" | sed "s/'/'\\\\''/g")
419     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
420     echo "$v"
421 }
422
423 cleanws(){
424     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
425 }
426
427 filter(){
428     pat=$1
429     shift
430     for v; do
431         eval "case $v in $pat) echo $v ;; esac"
432     done
433 }
434
435 filter_out(){
436     pat=$1
437     shift
438     for v; do
439         eval "case $v in $pat) ;; *) echo $v ;; esac"
440     done
441 }
442
443 map(){
444     m=$1
445     shift
446     for v; do eval $m; done
447 }
448
449 add_suffix(){
450     suffix=$1
451     shift
452     for v; do echo ${v}${suffix}; done
453 }
454
455 set_all(){
456     value=$1
457     shift
458     for var in $*; do
459         eval $var=$value
460     done
461 }
462
463 set_weak(){
464     value=$1
465     shift
466     for var; do
467         eval : \${$var:=$value}
468     done
469 }
470
471 sanitize_var_name(){
472     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
473 }
474
475 set_safe(){
476     var=$1
477     shift
478     eval $(sanitize_var_name "$var")='$*'
479 }
480
481 get_safe(){
482     eval echo \$$(sanitize_var_name "$1")
483 }
484
485 pushvar(){
486     for pvar in $*; do
487         eval level=\${${pvar}_level:=0}
488         eval ${pvar}_${level}="\$$pvar"
489         eval ${pvar}_level=$(($level+1))
490     done
491 }
492
493 popvar(){
494     for pvar in $*; do
495         eval level=\${${pvar}_level:-0}
496         test $level = 0 && continue
497         eval level=$(($level-1))
498         eval $pvar="\${${pvar}_${level}}"
499         eval ${pvar}_level=$level
500         eval unset ${pvar}_${level}
501     done
502 }
503
504 enable(){
505     set_all yes $*
506 }
507
508 disable(){
509     set_all no $*
510 }
511
512 enable_weak(){
513     set_weak yes $*
514 }
515
516 disable_weak(){
517     set_weak no $*
518 }
519
520 enable_safe(){
521     for var; do
522         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
523     done
524 }
525
526 disable_safe(){
527     for var; do
528         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
529     done
530 }
531
532 do_enable_deep(){
533     for var; do
534         enabled $var && continue
535         eval sel="\$${var}_select"
536         eval sgs="\$${var}_suggest"
537         pushvar var sgs
538         enable_deep $sel
539         popvar sgs
540         enable_deep_weak $sgs
541         popvar var
542     done
543 }
544
545 enable_deep(){
546     do_enable_deep $*
547     enable $*
548 }
549
550 enable_deep_weak(){
551     for var; do
552         disabled $var && continue
553         pushvar var
554         do_enable_deep $var
555         popvar var
556         enable_weak $var
557     done
558 }
559
560 enabled(){
561     test "${1#!}" = "$1" && op== || op=!=
562     eval test "x\$${1#!}" $op "xyes"
563 }
564
565 disabled(){
566     test "${1#!}" = "$1" && op== || op=!=
567     eval test "x\$${1#!}" $op "xno"
568 }
569
570 enabled_all(){
571     for opt; do
572         enabled $opt || return 1
573     done
574 }
575
576 disabled_all(){
577     for opt; do
578         disabled $opt || return 1
579     done
580 }
581
582 enabled_any(){
583     for opt; do
584         enabled $opt && return 0
585     done
586 }
587
588 disabled_any(){
589     for opt; do
590         disabled $opt && return 0
591     done
592     return 1
593 }
594
595 set_default(){
596     for opt; do
597         eval : \${$opt:=\$${opt}_default}
598     done
599 }
600
601 is_in(){
602     value=$1
603     shift
604     for var in $*; do
605         [ $var = $value ] && return 0
606     done
607     return 1
608 }
609
610 do_check_deps(){
611     for cfg; do
612         cfg="${cfg#!}"
613         enabled ${cfg}_checking && die "Circular dependency for $cfg."
614         disabled ${cfg}_checking && continue
615         enable ${cfg}_checking
616         append allopts $cfg
617
618         eval dep_all="\$${cfg}_deps"
619         eval dep_any="\$${cfg}_deps_any"
620         eval dep_sel="\$${cfg}_select"
621         eval dep_sgs="\$${cfg}_suggest"
622         eval dep_ifa="\$${cfg}_if"
623         eval dep_ifn="\$${cfg}_if_any"
624
625         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
626         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
627         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
628
629         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
630         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
631         enabled_all  $dep_all || disable $cfg
632         enabled_any  $dep_any || disable $cfg
633         disabled_any $dep_sel && disable $cfg
634
635         if enabled $cfg; then
636             enable_deep $dep_sel
637             enable_deep_weak $dep_sgs
638         fi
639
640         disable ${cfg}_checking
641     done
642 }
643
644 check_deps(){
645     unset allopts
646
647     do_check_deps "$@"
648
649     for cfg in $allopts; do
650         enabled $cfg || continue
651         eval dep_extralibs="\$${cfg}_extralibs"
652         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
653     done
654 }
655
656 print_config(){
657     pfx=$1
658     files=$2
659     shift 2
660     map 'eval echo "$v \${$v:-no}"' "$@" |
661     awk "BEGIN { split(\"$files\", files) }
662         {
663             c = \"$pfx\" toupper(\$1);
664             v = \$2;
665             sub(/yes/, 1, v);
666             sub(/no/,  0, v);
667             for (f in files) {
668                 file = files[f];
669                 if (file ~ /\\.h\$/) {
670                     printf(\"#define %s %d\\n\", c, v) >>file;
671                 } else if (file ~ /\\.asm\$/) {
672                     printf(\"%%define %s %d\\n\", c, v) >>file;
673                 } else if (file ~ /\\.mak\$/) {
674                     n = -v ? \"\" : \"!\";
675                     printf(\"%s%s=yes\\n\", n, c) >>file;
676                 } else if (file ~ /\\.texi\$/) {
677                     pre = -v ? \"\" : \"@c \";
678                     yesno = \$2;
679                     c2 = tolower(c);
680                     gsub(/_/, \"-\", c2);
681                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
682                 }
683             }
684         }"
685 }
686
687 print_enabled(){
688     suf=$1
689     shift
690     for v; do
691         enabled $v && printf "%s\n" ${v%$suf};
692     done
693 }
694
695 append(){
696     var=$1
697     shift
698     eval "$var=\"\$$var $*\""
699 }
700
701 prepend(){
702     var=$1
703     shift
704     eval "$var=\"$* \$$var\""
705 }
706
707 add_cppflags(){
708     append CPPFLAGS "$@"
709 }
710
711 add_cflags(){
712     append CFLAGS $($cflags_filter "$@")
713 }
714
715 add_cxxflags(){
716     append CXXFLAGS $($cflags_filter "$@")
717 }
718
719 add_asflags(){
720     append ASFLAGS $($asflags_filter "$@")
721 }
722
723 add_ldflags(){
724     append LDFLAGS $($ldflags_filter "$@")
725 }
726
727 add_extralibs(){
728     prepend extralibs $($ldflags_filter "$@")
729 }
730
731 add_host_cppflags(){
732     append host_cppflags "$@"
733 }
734
735 add_host_cflags(){
736     append host_cflags $($host_cflags_filter "$@")
737 }
738
739 add_host_ldflags(){
740     append host_ldflags $($host_ldflags_filter "$@")
741 }
742
743 add_compat(){
744     append compat_objs $1
745     shift
746     map 'add_cppflags -D$v' "$@"
747 }
748
749 check_cmd(){
750     log "$@"
751     "$@" >> $logfile 2>&1
752 }
753
754 cc_o(){
755     eval printf '%s\\n' $CC_O
756 }
757
758 cc_e(){
759     eval printf '%s\\n' $CC_E
760 }
761
762 check_cc(){
763     log check_cc "$@"
764     cat > $TMPC
765     log_file $TMPC
766     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
767 }
768
769 check_cxx(){
770     log check_cxx "$@"
771     cat > $TMPCPP
772     log_file $TMPCPP
773     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
774 }
775
776 check_cpp(){
777     log check_cpp "$@"
778     cat > $TMPC
779     log_file $TMPC
780     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
781 }
782
783 as_o(){
784     eval printf '%s\\n' $AS_O
785 }
786
787 check_as(){
788     log check_as "$@"
789     cat > $TMPS
790     log_file $TMPS
791     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
792 }
793
794 check_inline_asm(){
795     log check_inline_asm "$@"
796     name="$1"
797     code="$2"
798     shift 2
799     disable $name
800     check_cc "$@" <<EOF && enable $name
801 void foo(void){ __asm__ volatile($code); }
802 EOF
803 }
804
805 check_insn(){
806     log check_insn "$@"
807     check_inline_asm ${1}_inline "\"$2\""
808     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
809 }
810
811 check_yasm(){
812     log check_yasm "$@"
813     echo "$1" > $TMPS
814     log_file $TMPS
815     shift 1
816     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
817 }
818
819 ld_o(){
820     eval printf '%s\\n' $LD_O
821 }
822
823 check_ld(){
824     log check_ld "$@"
825     type=$1
826     shift 1
827     flags=$(filter_out '-l*|*.so' $@)
828     libs=$(filter '-l*|*.so' $@)
829     check_$type $($cflags_filter $flags) || return
830     flags=$($ldflags_filter $flags)
831     libs=$($ldflags_filter $libs)
832     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
833 }
834
835 check_code(){
836     log check_code "$@"
837     check=$1
838     headers=$2
839     code=$3
840     shift 3
841     {
842         for hdr in $headers; do
843             echo "#include <$hdr>"
844         done
845         echo "int main(void) { $code; return 0; }"
846     } | check_$check "$@"
847 }
848
849 check_cppflags(){
850     log check_cppflags "$@"
851     check_cc "$@" <<EOF && append CPPFLAGS "$@"
852 int x;
853 EOF
854 }
855
856 check_cflags(){
857     log check_cflags "$@"
858     set -- $($cflags_filter "$@")
859     check_cc "$@" <<EOF && append CFLAGS "$@"
860 int x;
861 EOF
862 }
863
864 check_cxxflags(){
865     log check_cxxflags "$@"
866     set -- $($cflags_filter "$@")
867     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
868 int x;
869 EOF
870 }
871
872 test_ldflags(){
873     log test_ldflags "$@"
874     check_ld "cc" "$@" <<EOF
875 int main(void){ return 0; }
876 EOF
877 }
878
879 check_ldflags(){
880     log check_ldflags "$@"
881     test_ldflags "$@" && add_ldflags "$@"
882 }
883
884 check_header(){
885     log check_header "$@"
886     header=$1
887     shift
888     disable_safe $header
889     check_cpp "$@" <<EOF && enable_safe $header
890 #include <$header>
891 int x;
892 EOF
893 }
894
895 check_func(){
896     log check_func "$@"
897     func=$1
898     shift
899     disable $func
900     check_ld "cc" "$@" <<EOF && enable $func
901 extern int $func();
902 int main(void){ $func(); }
903 EOF
904 }
905
906 check_mathfunc(){
907     log check_mathfunc "$@"
908     func=$1
909     narg=$2
910     shift 2
911     test $narg = 2 && args="f, g" || args="f"
912     disable $func
913     check_ld "cc" "$@" <<EOF && enable $func
914 #include <math.h>
915 float foo(float f, float g) { return $func($args); }
916 int main(void){ return (int) foo; }
917 EOF
918 }
919
920 check_func_headers(){
921     log check_func_headers "$@"
922     headers=$1
923     funcs=$2
924     shift 2
925     {
926         for hdr in $headers; do
927             echo "#include <$hdr>"
928         done
929         for func in $funcs; do
930             echo "long check_$func(void) { return (long) $func; }"
931         done
932         echo "int main(void) { return 0; }"
933     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
934 }
935
936 check_class_headers_cpp(){
937     log check_class_headers_cpp "$@"
938     headers=$1
939     classes=$2
940     shift 2
941     {
942         for hdr in $headers; do
943             echo "#include <$hdr>"
944         done
945         echo "int main(void) { "
946         i=1
947         for class in $classes; do
948             echo "$class obj$i;"
949             i=$(expr $i + 1)
950         done
951         echo "return 0; }"
952     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
953 }
954
955 check_cpp_condition(){
956     log check_cpp_condition "$@"
957     header=$1
958     condition=$2
959     shift 2
960     check_cpp "$@" <<EOF
961 #include <$header>
962 #if !($condition)
963 #error "unsatisfied condition: $condition"
964 #endif
965 EOF
966 }
967
968 check_lib(){
969     log check_lib "$@"
970     header="$1"
971     func="$2"
972     shift 2
973     check_header $header && check_func $func "$@" && add_extralibs "$@"
974 }
975
976 check_lib2(){
977     log check_lib2 "$@"
978     headers="$1"
979     funcs="$2"
980     shift 2
981     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
982 }
983
984 check_lib_cpp(){
985     log check_lib_cpp "$@"
986     headers="$1"
987     classes="$2"
988     shift 2
989     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
990 }
991
992 check_pkg_config(){
993     log check_pkg_config "$@"
994     pkg="$1"
995     headers="$2"
996     funcs="$3"
997     shift 3
998     check_cmd $pkg_config --exists --print-errors $pkg || return
999     pkg_cflags=$($pkg_config --cflags $pkg)
1000     pkg_libs=$($pkg_config --libs $pkg)
1001     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1002         set_safe ${pkg}_cflags $pkg_cflags   &&
1003         set_safe ${pkg}_libs   $pkg_libs
1004 }
1005
1006 check_exec(){
1007     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1008 }
1009
1010 check_exec_crash(){
1011     code=$(cat)
1012
1013     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1014     # are safe but may not be available everywhere.  Thus we use
1015     # raise(SIGTERM) instead.  The check is run in a subshell so we
1016     # can redirect the "Terminated" message from the shell.  SIGBUS
1017     # is not defined by standard C so it is used conditionally.
1018
1019     (check_exec "$@") >> $logfile 2>&1 <<EOF
1020 #include <signal.h>
1021 static void sighandler(int sig){
1022     raise(SIGTERM);
1023 }
1024 int foo(void){
1025     $code
1026 }
1027 int (*func_ptr)(void) = foo;
1028 int main(void){
1029     signal(SIGILL, sighandler);
1030     signal(SIGFPE, sighandler);
1031     signal(SIGSEGV, sighandler);
1032 #ifdef SIGBUS
1033     signal(SIGBUS, sighandler);
1034 #endif
1035     return func_ptr();
1036 }
1037 EOF
1038 }
1039
1040 check_type(){
1041     log check_type "$@"
1042     headers=$1
1043     type=$2
1044     shift 2
1045     disable_safe "$type"
1046     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1047 }
1048
1049 check_struct(){
1050     log check_struct "$@"
1051     headers=$1
1052     struct=$2
1053     member=$3
1054     shift 3
1055     disable_safe "${struct}_${member}"
1056     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1057         enable_safe "${struct}_${member}"
1058 }
1059
1060 check_builtin(){
1061     log check_builtin "$@"
1062     name=$1
1063     headers=$2
1064     builtin=$3
1065     shift 3
1066     disable "$name"
1067     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1068 }
1069
1070 require(){
1071     name="$1"
1072     header="$2"
1073     func="$3"
1074     shift 3
1075     check_lib $header $func "$@" || die "ERROR: $name not found"
1076 }
1077
1078 require2(){
1079     name="$1"
1080     headers="$2"
1081     func="$3"
1082     shift 3
1083     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1084 }
1085
1086 require_cpp(){
1087     name="$1"
1088     headers="$2"
1089     classes="$3"
1090     shift 3
1091     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1092 }
1093
1094 require_pkg_config(){
1095     pkg="$1"
1096     check_pkg_config "$@" || die "ERROR: $pkg not found"
1097     add_cflags    $(get_safe ${pkg}_cflags)
1098     add_extralibs $(get_safe ${pkg}_libs)
1099 }
1100
1101 hostcc_o(){
1102     eval printf '%s\\n' $HOSTCC_O
1103 }
1104
1105 check_host_cc(){
1106     log check_host_cc "$@"
1107     cat > $TMPC
1108     log_file $TMPC
1109     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1110 }
1111
1112 check_host_cppflags(){
1113     log check_host_cppflags "$@"
1114     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1115 int x;
1116 EOF
1117 }
1118
1119 check_host_cflags(){
1120     log check_host_cflags "$@"
1121     set -- $($host_cflags_filter "$@")
1122     check_host_cc "$@" <<EOF && append host_cflags "$@"
1123 int x;
1124 EOF
1125 }
1126
1127 apply(){
1128     file=$1
1129     shift
1130     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1131 }
1132
1133 cp_if_changed(){
1134     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1135     mkdir -p "$(dirname $2)"
1136     $cp_f "$1" "$2"
1137 }
1138
1139 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1140 # system-dependent things.
1141
1142 COMPONENT_LIST="
1143     bsfs
1144     decoders
1145     demuxers
1146     encoders
1147     filters
1148     hwaccels
1149     indevs
1150     muxers
1151     outdevs
1152     parsers
1153     protocols
1154 "
1155
1156 EXTERNAL_LIBRARY_LIST="
1157     avisynth
1158     bzlib
1159     crystalhd
1160     fontconfig
1161     frei0r
1162     gnutls
1163     iconv
1164     libaacplus
1165     libass
1166     libbluray
1167     libcaca
1168     libcdio
1169     libcelt
1170     libdc1394
1171     libfaac
1172     libfdk_aac
1173     libflite
1174     libfreetype
1175     libgme
1176     libgsm
1177     libiec61883
1178     libilbc
1179     libmodplug
1180     libmp3lame
1181     libnut
1182     libopencore_amrnb
1183     libopencore_amrwb
1184     libopencv
1185     libopenjpeg
1186     libopus
1187     libpulse
1188     libquvi
1189     librtmp
1190     libschroedinger
1191     libshine
1192     libsoxr
1193     libspeex
1194     libstagefright_h264
1195     libtheora
1196     libtwolame
1197     libutvideo
1198     libv4l2
1199     libvidstab
1200     libvo_aacenc
1201     libvo_amrwbenc
1202     libvorbis
1203     libvpx
1204     libwavpack
1205     libx264
1206     libxavs
1207     libxvid
1208     libzmq
1209     libzvbi
1210     openal
1211     opencl
1212     openssl
1213     x11grab
1214     zlib
1215 "
1216
1217 DOCUMENT_LIST="
1218     doc
1219     htmlpages
1220     manpages
1221     podpages
1222     txtpages
1223 "
1224
1225 HWACCEL_LIST="
1226     dxva2
1227     vaapi
1228     vda
1229     vdpau
1230 "
1231
1232 LIBRARY_LIST="
1233     avcodec
1234     avdevice
1235     avfilter
1236     avformat
1237     avresample
1238     avutil
1239     postproc
1240     swresample
1241     swscale
1242 "
1243
1244 PROGRAM_LIST="
1245     ffplay
1246     ffprobe
1247     ffserver
1248     ffmpeg
1249 "
1250
1251 CONFIG_LIST="
1252     $COMPONENT_LIST
1253     $DOCUMENT_LIST
1254     $EXTERNAL_LIBRARY_LIST
1255     $HWACCEL_LIST
1256     $LIBRARY_LIST
1257     $PROGRAM_LIST
1258     dct
1259     dwt
1260     error_resilience
1261     fast_unaligned
1262     fft
1263     ftrapv
1264     gpl
1265     gray
1266     hardcoded_tables
1267     incompatible_libav_abi
1268     incompatible_fork_abi
1269     lsp
1270     lzo
1271     mdct
1272     memalign_hack
1273     memory_poisoning
1274     network
1275     nonfree
1276     pic
1277     rdft
1278     runtime_cpudetect
1279     safe_bitstream_reader
1280     shared
1281     small
1282     sram
1283     static
1284     swscale_alpha
1285     thumb
1286     version3
1287     xmm_clobber_test
1288 "
1289
1290 THREADS_LIST='
1291     pthreads
1292     w32threads
1293     os2threads
1294 '
1295
1296 ATOMICS_LIST='
1297     atomics_gcc
1298     atomics_suncc
1299     atomics_win32
1300 '
1301
1302 ARCH_LIST='
1303     aarch64
1304     alpha
1305     arm
1306     avr32
1307     avr32_ap
1308     avr32_uc
1309     bfin
1310     ia64
1311     m68k
1312     mips
1313     mips64
1314     parisc
1315     ppc
1316     ppc64
1317     s390
1318     sh4
1319     sparc
1320     sparc64
1321     tilegx
1322     tilepro
1323     tomi
1324     x86
1325     x86_32
1326     x86_64
1327 '
1328
1329 ARCH_EXT_LIST_ARM='
1330     armv5te
1331     armv6
1332     armv6t2
1333     neon
1334     vfp
1335     vfpv3
1336 '
1337
1338 ARCH_EXT_LIST_X86='
1339     amd3dnow
1340     amd3dnowext
1341     avx
1342     fma4
1343     i686
1344     mmx
1345     mmxext
1346     sse
1347     sse2
1348     sse3
1349     sse4
1350     sse42
1351     ssse3
1352 '
1353
1354 ARCH_EXT_LIST="
1355     $ARCH_EXT_LIST_ARM
1356     $ARCH_EXT_LIST_X86
1357     altivec
1358     ppc4xx
1359     vis
1360     mipsfpu
1361     mips32r2
1362     mipsdspr1
1363     mipsdspr2
1364 "
1365
1366 HAVE_LIST_CMDLINE='
1367     inline_asm
1368     symver
1369     yasm
1370 '
1371
1372 HAVE_LIST_PUB='
1373     bigendian
1374     fast_unaligned
1375     incompatible_libav_abi
1376     incompatible_fork_abi
1377 '
1378
1379 MATH_FUNCS="
1380     atanf
1381     atan2f
1382     cbrt
1383     cbrtf
1384     cosf
1385     exp2
1386     exp2f
1387     expf
1388     isinf
1389     isnan
1390     ldexpf
1391     llrint
1392     llrintf
1393     log2
1394     log2f
1395     log10f
1396     lrint
1397     lrintf
1398     powf
1399     rint
1400     round
1401     roundf
1402     sinf
1403     trunc
1404     truncf
1405 "
1406
1407 HAVE_LIST="
1408     $ARCH_EXT_LIST
1409     $(add_suffix _external $ARCH_EXT_LIST)
1410     $(add_suffix _inline   $ARCH_EXT_LIST)
1411     $HAVE_LIST_CMDLINE
1412     $HAVE_LIST_PUB
1413     $THREADS_LIST
1414     $ATOMICS_LIST
1415     $MATH_FUNCS
1416     access
1417     aligned_malloc
1418     aligned_stack
1419     alsa_asoundlib_h
1420     altivec_h
1421     arpa_inet_h
1422     asm_mod_q
1423     asm_mod_y
1424     asm_types_h
1425     atomic_cas_ptr
1426     atomics_native
1427     attribute_may_alias
1428     attribute_packed
1429     cdio_paranoia_h
1430     cdio_paranoia_paranoia_h
1431     CL_cl_h
1432     clock_gettime
1433     closesocket
1434     CommandLineToArgvW
1435     cpunop
1436     CryptGenRandom
1437     dcbzl
1438     dev_bktr_ioctl_bt848_h
1439     dev_bktr_ioctl_meteor_h
1440     dev_ic_bt8xx_h
1441     dev_video_bktr_ioctl_bt848_h
1442     dev_video_meteor_ioctl_meteor_h
1443     direct_h
1444     dlfcn_h
1445     dlopen
1446     dos_paths
1447     dxva_h
1448     ebp_available
1449     ebx_available
1450     fast_64bit
1451     fast_clz
1452     fast_cmov
1453     fcntl
1454     fork
1455     getaddrinfo
1456     gethrtime
1457     getopt
1458     GetProcessAffinityMask
1459     GetProcessMemoryInfo
1460     GetProcessTimes
1461     GetSystemTimeAsFileTime
1462     getrusage
1463     getservbyport
1464     gettimeofday
1465     glob
1466     gnu_as
1467     gsm_h
1468     ibm_asm
1469     inet_aton
1470     io_h
1471     inline_asm_labels
1472     isatty
1473     jack_port_get_latency_range
1474     kbhit
1475     ldbrx
1476     libdc1394_1
1477     libdc1394_2
1478     local_aligned_16
1479     local_aligned_8
1480     localtime_r
1481     loongson
1482     lzo1x_999_compress
1483     machine_ioctl_bt848_h
1484     machine_ioctl_meteor_h
1485     machine_rw_barrier
1486     makeinfo
1487     malloc_h
1488     MapViewOfFile
1489     memalign
1490     MemoryBarrier
1491     mkstemp
1492     mm_empty
1493     mmap
1494     mprotect
1495     msvcrt
1496     nanosleep
1497     openjpeg_1_5_openjpeg_h
1498     PeekNamedPipe
1499     perl
1500     pod2man
1501     poll_h
1502     posix_memalign
1503     pragma_deprecated
1504     pthread_cancel
1505     rdtsc
1506     rsync_contimeout
1507     sarestart
1508     sched_getaffinity
1509     sdl
1510     SetConsoleTextAttribute
1511     setmode
1512     setrlimit
1513     Sleep
1514     sndio_h
1515     socklen_t
1516     soundcard_h
1517     strerror_r
1518     struct_addrinfo
1519     struct_group_source_req
1520     struct_ip_mreq_source
1521     struct_ipv6_mreq
1522     struct_pollfd
1523     struct_rusage_ru_maxrss
1524     struct_sctp_event_subscribe
1525     struct_sockaddr_in6
1526     struct_sockaddr_sa_len
1527     struct_sockaddr_storage
1528     struct_stat_st_mtim_tv_nsec
1529     struct_v4l2_frmivalenum_discrete
1530     symver_asm_label
1531     symver_gnu_asm
1532     sync_val_compare_and_swap
1533     sysconf
1534     sysctl
1535     sys_mman_h
1536     sys_param_h
1537     sys_resource_h
1538     sys_select_h
1539     sys_soundcard_h
1540     sys_time_h
1541     sys_un_h
1542     sys_videoio_h
1543     termios_h
1544     texi2html
1545     threads
1546     unistd_h
1547     usleep
1548     vfp_args
1549     VirtualAlloc
1550     windows_h
1551     winsock2_h
1552     xform_asm
1553     xmm_clobbers
1554 "
1555
1556 # options emitted with CONFIG_ prefix but not available on the command line
1557 CONFIG_EXTRA="
1558     aandcttables
1559     ac3dsp
1560     audio_frame_queue
1561     dsputil
1562     exif
1563     frame_thread_encoder
1564     gcrypt
1565     golomb
1566     gplv3
1567     h264chroma
1568     h264dsp
1569     h264pred
1570     h264qpel
1571     hpeldsp
1572     huffman
1573     lgplv3
1574     lpc
1575     mpegaudio
1576     mpegaudiodsp
1577     mpegvideo
1578     mpegvideoenc
1579     nettle
1580     rangecoder
1581     riffdec
1582     riffenc
1583     rtpdec
1584     rtpenc_chain
1585     sinewin
1586     videodsp
1587     vp3dsp
1588 "
1589
1590 CMDLINE_SELECT="
1591     $ARCH_EXT_LIST
1592     $CONFIG_LIST
1593     $HAVE_LIST_CMDLINE
1594     $THREADS_LIST
1595     asm
1596     cross_compile
1597     debug
1598     extra_warnings
1599     logging
1600     lto
1601     optimizations
1602     stripping
1603 "
1604
1605 PATHS_LIST='
1606     bindir
1607     datadir
1608     docdir
1609     incdir
1610     libdir
1611     mandir
1612     prefix
1613     shlibdir
1614 '
1615
1616 CMDLINE_SET="
1617     $PATHS_LIST
1618     ar
1619     arch
1620     as
1621     assert_level
1622     build_suffix
1623     cc
1624     cpu
1625     cross_prefix
1626     cxx
1627     dep_cc
1628     extra_version
1629     host_cc
1630     host_cflags
1631     host_ld
1632     host_ldflags
1633     host_libs
1634     host_os
1635     install
1636     ld
1637     logfile
1638     malloc_prefix
1639     nm
1640     optflags
1641     pkg_config
1642     progs_suffix
1643     random_seed
1644     samples
1645     strip
1646     sysinclude
1647     sysroot
1648     target_exec
1649     target_os
1650     target_path
1651     target_samples
1652     toolchain
1653     valgrind
1654     yasmexe
1655 "
1656
1657 CMDLINE_APPEND="
1658     extra_cflags
1659     extra_cxxflags
1660     host_cppflags
1661 "
1662
1663 # code dependency declarations
1664
1665 # architecture extensions
1666
1667 armv5te_deps="arm"
1668 armv6_deps="arm"
1669 armv6t2_deps="arm"
1670 neon_deps="arm"
1671 vfp_deps="arm"
1672 vfpv3_deps="vfp"
1673
1674 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1675
1676 mipsfpu_deps="mips"
1677 mips32r2_deps="mips"
1678 mipsdspr1_deps="mips"
1679 mipsdspr2_deps="mips"
1680
1681 altivec_deps="ppc"
1682 ppc4xx_deps="ppc"
1683
1684 vis_deps="sparc"
1685
1686 cpunop_deps="i686"
1687 x86_64_select="i686"
1688 x86_64_suggest="fast_cmov"
1689
1690 amd3dnow_deps="mmx"
1691 amd3dnowext_deps="amd3dnow"
1692 mmx_deps="x86"
1693 mmxext_deps="mmx"
1694 sse_deps="mmxext"
1695 sse2_deps="sse"
1696 sse3_deps="sse2"
1697 ssse3_deps="sse3"
1698 sse4_deps="ssse3"
1699 sse42_deps="sse4"
1700 avx_deps="sse42"
1701 fma4_deps="avx"
1702
1703 mmx_external_deps="yasm"
1704 mmx_inline_deps="inline_asm"
1705 mmx_suggest="mmx_external mmx_inline"
1706
1707 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1708     eval dep=\$${ext}_deps
1709     eval ${ext}_external_deps='"${dep}_external"'
1710     eval ${ext}_inline_deps='"${dep}_inline"'
1711     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1712 done
1713
1714 aligned_stack_if_any="ppc x86"
1715 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1716 fast_clz_if_any="alpha avr32 mips ppc x86"
1717 fast_unaligned_if_any="ppc x86"
1718
1719 inline_asm_deps="!tms470"
1720 need_memalign="altivec neon sse"
1721
1722 symver_if_any="symver_asm_label symver_gnu_asm"
1723
1724 log2_deps="!msvcrt"
1725
1726 # subsystems
1727 dct_select="rdft"
1728 error_resilience_select="dsputil"
1729 frame_thread_encoder_deps="encoders threads"
1730 lpc_select="dsputil"
1731 mdct_select="fft"
1732 rdft_select="fft"
1733 mpegaudio_select="mpegaudiodsp"
1734 mpegaudiodsp_select="dct"
1735 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1736 mpegvideoenc_select="mpegvideo"
1737
1738 # decoders / encoders
1739 aac_decoder_select="mdct sinewin"
1740 aac_encoder_select="audio_frame_queue mdct sinewin"
1741 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1742 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1743 ac3_encoder_select="mdct ac3dsp dsputil"
1744 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1745 aic_decoder_select="dsputil golomb"
1746 alac_encoder_select="lpc"
1747 als_decoder_select="dsputil"
1748 amrnb_decoder_select="lsp"
1749 amrwb_decoder_select="lsp"
1750 amv_decoder_select="dsputil hpeldsp exif"
1751 amv_encoder_select="aandcttables"
1752 ape_decoder_select="dsputil"
1753 asv1_decoder_select="dsputil"
1754 asv1_encoder_select="dsputil"
1755 asv2_decoder_select="dsputil"
1756 asv2_encoder_select="dsputil"
1757 atrac1_decoder_select="mdct sinewin"
1758 atrac3_decoder_select="mdct"
1759 avrn_decoder_select="exif"
1760 bink_decoder_select="dsputil hpeldsp"
1761 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1762 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1763 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1764 cllc_decoder_select="dsputil"
1765 comfortnoise_encoder_select="lpc"
1766 cook_decoder_select="dsputil mdct sinewin"
1767 cscd_decoder_select="lzo"
1768 cscd_decoder_suggest="zlib"
1769 dca_decoder_select="mdct"
1770 dirac_decoder_select="dsputil dwt golomb videodsp"
1771 dnxhd_decoder_select="dsputil"
1772 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1773 dvvideo_decoder_select="dsputil"
1774 dvvideo_encoder_select="dsputil"
1775 dxa_decoder_deps="zlib"
1776 eac3_decoder_select="ac3_decoder"
1777 eac3_encoder_select="ac3_encoder"
1778 eamad_decoder_select="aandcttables dsputil mpegvideo"
1779 eatgq_decoder_select="aandcttables"
1780 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1781 exr_decoder_deps="zlib"
1782 ffv1_decoder_select="dsputil golomb rangecoder"
1783 ffv1_encoder_select="dsputil rangecoder"
1784 ffvhuff_decoder_select="dsputil"
1785 ffvhuff_encoder_select="dsputil huffman"
1786 flac_decoder_select="golomb"
1787 flac_encoder_select="dsputil golomb lpc"
1788 flashsv_decoder_deps="zlib"
1789 flashsv_encoder_deps="zlib"
1790 flashsv2_encoder_deps="zlib"
1791 flashsv2_decoder_deps="zlib"
1792 flv_decoder_select="h263_decoder"
1793 flv_encoder_select="h263_encoder"
1794 fourxm_decoder_select="dsputil"
1795 fraps_decoder_select="dsputil huffman"
1796 g2m_decoder_deps="zlib"
1797 g2m_decoder_select="dsputil"
1798 g729_decoder_select="dsputil"
1799 h261_decoder_select="error_resilience mpegvideo"
1800 h261_encoder_select="aandcttables mpegvideoenc"
1801 h263_decoder_select="error_resilience h263_parser mpegvideo"
1802 h263_encoder_select="aandcttables mpegvideoenc"
1803 h263i_decoder_select="h263_decoder"
1804 h263p_encoder_select="h263_encoder"
1805 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1806 h264_decoder_suggest="error_resilience"
1807 huffyuv_decoder_select="dsputil"
1808 huffyuv_encoder_select="dsputil huffman"
1809 iac_decoder_select="dsputil fft mdct sinewin"
1810 imc_decoder_select="dsputil fft mdct sinewin"
1811 indeo3_decoder_select="hpeldsp"
1812 interplay_video_decoder_select="hpeldsp"
1813 jpegls_decoder_select="dsputil golomb hpeldsp exif"
1814 jpegls_encoder_select="golomb"
1815 jv_decoder_select="dsputil"
1816 lagarith_decoder_select="dsputil"
1817 ljpeg_encoder_select="aandcttables mpegvideoenc"
1818 loco_decoder_select="golomb"
1819 mdec_decoder_select="dsputil error_resilience mpegvideo"
1820 metasound_decoder_select="lsp mdct sinewin"
1821 mimic_decoder_select="dsputil hpeldsp"
1822 mjpeg_decoder_select="dsputil hpeldsp exif"
1823 mjpegb_decoder_select="dsputil hpeldsp exif"
1824 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1825 mlp_decoder_select="dsputil mlp_parser"
1826 motionpixels_decoder_select="dsputil"
1827 mp1_decoder_select="mpegaudio"
1828 mp1float_decoder_select="mpegaudio"
1829 mp2_decoder_select="mpegaudio"
1830 mp2float_decoder_select="mpegaudio"
1831 mp3_decoder_select="mpegaudio"
1832 mp3adu_decoder_select="mpegaudio"
1833 mp3adufloat_decoder_select="mpegaudio"
1834 mp3float_decoder_select="mpegaudio"
1835 mp3on4_decoder_select="mpegaudio"
1836 mp3on4float_decoder_select="mpegaudio"
1837 mpc7_decoder_select="dsputil mpegaudiodsp"
1838 mpc8_decoder_select="dsputil mpegaudiodsp"
1839 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1840 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1841 mpeg1video_decoder_select="error_resilience mpegvideo"
1842 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1843 mpeg2video_decoder_select="error_resilience mpegvideo"
1844 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1845 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1846 mpeg4_encoder_select="h263_encoder"
1847 msmpeg4v1_decoder_select="h263_decoder"
1848 msmpeg4v2_decoder_select="h263_decoder"
1849 msmpeg4v2_encoder_select="h263_encoder"
1850 msmpeg4v3_decoder_select="h263_decoder"
1851 msmpeg4v3_encoder_select="h263_encoder"
1852 mss2_decoder_select="error_resilience vc1_decoder"
1853 mxpeg_decoder_select="dsputil hpeldsp exif"
1854 nellymoser_decoder_select="mdct sinewin"
1855 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1856 nuv_decoder_select="dsputil lzo"
1857 png_decoder_deps="zlib"
1858 png_encoder_deps="zlib"
1859 png_encoder_select="dsputil"
1860 prores_decoder_select="dsputil"
1861 prores_encoder_select="dsputil"
1862 qcelp_decoder_select="lsp"
1863 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1864 ra_144_encoder_select="audio_frame_queue lpc"
1865 ralf_decoder_select="golomb"
1866 rtjpeg_decoder_select="dsputil"
1867 rv10_decoder_select="error_resilience h263_decoder"
1868 rv10_encoder_select="h263_encoder"
1869 rv20_decoder_select="error_resilience h263_decoder"
1870 rv20_encoder_select="h263_encoder"
1871 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1872 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1873 shorten_decoder_select="golomb"
1874 sipr_decoder_select="lsp"
1875 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
1876 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
1877 sonic_decoder_select="golomb"
1878 sonic_encoder_select="golomb"
1879 sonic_ls_encoder_select="golomb"
1880 sp5x_decoder_select="dsputil hpeldsp exif"
1881 svq1_decoder_select="hpeldsp"
1882 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1883 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1884 svq3_decoder_suggest="error_resilience zlib"
1885 tak_decoder_select="dsputil"
1886 theora_decoder_select="vp3_decoder"
1887 tiff_decoder_suggest="zlib"
1888 tiff_encoder_suggest="zlib"
1889 thp_decoder_select="dsputil hpeldsp exif"
1890 truehd_decoder_select="mlp_parser"
1891 truemotion2_decoder_select="dsputil"
1892 truespeech_decoder_select="dsputil"
1893 tscc_decoder_deps="zlib"
1894 twinvq_decoder_select="mdct lsp sinewin"
1895 utvideo_decoder_select="dsputil"
1896 utvideo_encoder_select="dsputil huffman"
1897 vble_decoder_select="dsputil"
1898 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
1899 vc1image_decoder_select="vc1_decoder"
1900 vorbis_decoder_select="mdct"
1901 vorbis_encoder_select="mdct"
1902 vp3_decoder_select="hpeldsp vp3dsp videodsp"
1903 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
1904 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
1905 vp6a_decoder_select="vp6_decoder"
1906 vp6f_decoder_select="vp6_decoder"
1907 vp8_decoder_select="h264pred videodsp"
1908 webp_decoder_select="vp8_decoder"
1909 wmapro_decoder_select="mdct sinewin"
1910 wmav1_decoder_select="mdct sinewin"
1911 wmav1_encoder_select="mdct sinewin"
1912 wmav2_decoder_select="mdct sinewin"
1913 wmav2_encoder_select="mdct sinewin"
1914 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
1915 wmv1_decoder_select="h263_decoder"
1916 wmv1_encoder_select="h263_encoder"
1917 wmv2_decoder_select="h263_decoder videodsp"
1918 wmv2_encoder_select="h263_encoder"
1919 wmv3_decoder_select="vc1_decoder"
1920 wmv3image_decoder_select="wmv3_decoder"
1921 zerocodec_decoder_deps="zlib"
1922 zlib_decoder_deps="zlib"
1923 zlib_encoder_deps="zlib"
1924 zmbv_decoder_deps="zlib"
1925 zmbv_encoder_deps="zlib"
1926
1927 # hardware accelerators
1928 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
1929 dxva2_deps="dxva2api_h"
1930 vaapi_deps="va_va_h"
1931 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
1932 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
1933 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
1934
1935 h263_vaapi_hwaccel_deps="vaapi"
1936 h263_vaapi_hwaccel_select="h263_decoder"
1937 h263_vdpau_hwaccel_deps="vdpau"
1938 h263_vdpau_hwaccel_select="h263_decoder"
1939 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
1940 h264_dxva2_hwaccel_deps="dxva2"
1941 h264_dxva2_hwaccel_select="h264_decoder"
1942 h264_vaapi_hwaccel_deps="vaapi"
1943 h264_vaapi_hwaccel_select="h264_decoder"
1944 h264_vda_decoder_deps="vda"
1945 h264_vda_decoder_select="h264_decoder"
1946 h264_vda_hwaccel_deps="vda"
1947 h264_vda_hwaccel_select="h264_decoder"
1948 h264_vdpau_decoder_deps="vdpau"
1949 h264_vdpau_decoder_select="h264_decoder"
1950 h264_vdpau_hwaccel_deps="vdpau"
1951 h264_vdpau_hwaccel_select="h264_decoder"
1952 mpeg_vdpau_decoder_deps="vdpau"
1953 mpeg_vdpau_decoder_select="mpeg2video_decoder"
1954 mpeg1_vdpau_decoder_deps="vdpau"
1955 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
1956 mpeg1_vdpau_hwaccel_deps="vdpau"
1957 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
1958 mpeg2_crystalhd_decoder_select="crystalhd"
1959 mpeg2_dxva2_hwaccel_deps="dxva2"
1960 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
1961 mpeg2_vaapi_hwaccel_deps="vaapi"
1962 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
1963 mpeg2_vdpau_hwaccel_deps="vdpau"
1964 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
1965 mpeg4_crystalhd_decoder_select="crystalhd"
1966 mpeg4_vaapi_hwaccel_deps="vaapi"
1967 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
1968 mpeg4_vdpau_decoder_deps="vdpau"
1969 mpeg4_vdpau_decoder_select="mpeg4_decoder"
1970 mpeg4_vdpau_hwaccel_deps="vdpau"
1971 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
1972 msmpeg4_crystalhd_decoder_select="crystalhd"
1973 vc1_crystalhd_decoder_select="crystalhd"
1974 vc1_dxva2_hwaccel_deps="dxva2"
1975 vc1_dxva2_hwaccel_select="vc1_decoder"
1976 vc1_vaapi_hwaccel_deps="vaapi"
1977 vc1_vaapi_hwaccel_select="vc1_decoder"
1978 vc1_vdpau_decoder_deps="vdpau"
1979 vc1_vdpau_decoder_select="vc1_decoder"
1980 vc1_vdpau_hwaccel_deps="vdpau"
1981 vc1_vdpau_hwaccel_select="vc1_decoder"
1982 wmv3_crystalhd_decoder_select="crystalhd"
1983 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
1984 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
1985 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
1986 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
1987
1988 # parsers
1989 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1990 mpeg4video_parser_select="error_resilience mpegvideo"
1991 mpegvideo_parser_select="error_resilience mpegvideo"
1992 vc1_parser_select="mpegvideo"
1993
1994 # external libraries
1995 libaacplus_encoder_deps="libaacplus"
1996 libcelt_decoder_deps="libcelt"
1997 libfaac_encoder_deps="libfaac"
1998 libfaac_encoder_select="audio_frame_queue"
1999 libfdk_aac_decoder_deps="libfdk_aac"
2000 libfdk_aac_encoder_deps="libfdk_aac"
2001 libfdk_aac_encoder_select="audio_frame_queue"
2002 libgme_demuxer_deps="libgme"
2003 libgsm_decoder_deps="libgsm"
2004 libgsm_encoder_deps="libgsm"
2005 libgsm_ms_decoder_deps="libgsm"
2006 libgsm_ms_encoder_deps="libgsm"
2007 libilbc_decoder_deps="libilbc"
2008 libilbc_encoder_deps="libilbc"
2009 libmodplug_demuxer_deps="libmodplug"
2010 libmp3lame_encoder_deps="libmp3lame"
2011 libmp3lame_encoder_select="audio_frame_queue"
2012 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2013 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2014 libopencore_amrnb_encoder_select="audio_frame_queue"
2015 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2016 libopenjpeg_decoder_deps="libopenjpeg"
2017 libopenjpeg_encoder_deps="libopenjpeg"
2018 libopus_decoder_deps="libopus"
2019 libopus_encoder_deps="libopus"
2020 libopus_encoder_select="audio_frame_queue"
2021 libquvi_demuxer_deps="libquvi"
2022 libschroedinger_decoder_deps="libschroedinger"
2023 libschroedinger_encoder_deps="libschroedinger"
2024 libshine_encoder_deps="libshine"
2025 libshine_encoder_select="audio_frame_queue"
2026 libspeex_decoder_deps="libspeex"
2027 libspeex_encoder_deps="libspeex"
2028 libspeex_encoder_select="audio_frame_queue"
2029 libstagefright_h264_decoder_deps="libstagefright_h264"
2030 libtheora_encoder_deps="libtheora"
2031 libtwolame_encoder_deps="libtwolame"
2032 libvo_aacenc_encoder_deps="libvo_aacenc"
2033 libvo_aacenc_encoder_select="audio_frame_queue"
2034 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2035 libvorbis_decoder_deps="libvorbis"
2036 libvorbis_encoder_deps="libvorbis"
2037 libvorbis_encoder_select="audio_frame_queue"
2038 libvpx_vp8_decoder_deps="libvpx"
2039 libvpx_vp8_encoder_deps="libvpx"
2040 libvpx_vp9_decoder_deps="libvpx"
2041 libvpx_vp9_encoder_deps="libvpx"
2042 libwavpack_encoder_deps="libwavpack"
2043 libx264_encoder_deps="libx264"
2044 libx264rgb_encoder_deps="libx264"
2045 libxavs_encoder_deps="libxavs"
2046 libxvid_encoder_deps="libxvid"
2047 libutvideo_decoder_deps="libutvideo"
2048 libutvideo_encoder_deps="libutvideo"
2049 libzvbi_teletext_decoder_deps="libzvbi"
2050
2051 # demuxers / muxers
2052 ac3_demuxer_select="ac3_parser"
2053 asf_demuxer_select="riffdec"
2054 asf_muxer_select="riffenc"
2055 asf_stream_muxer_select="asf_muxer"
2056 avi_demuxer_select="riffdec"
2057 avi_muxer_select="riffenc"
2058 avisynth_demuxer_deps="avisynth"
2059 avisynth_demuxer_select="riffdec"
2060 caf_demuxer_select="riffdec"
2061 dirac_demuxer_select="dirac_parser"
2062 dts_demuxer_select="dca_parser"
2063 dtshd_demuxer_select="dca_parser"
2064 dxa_demuxer_select="riffdec"
2065 eac3_demuxer_select="ac3_parser"
2066 f4v_muxer_select="mov_muxer"
2067 flac_demuxer_select="flac_parser"
2068 hls_muxer_select="mpegts_muxer"
2069 ipod_muxer_select="mov_muxer"
2070 ismv_muxer_select="mov_muxer"
2071 libnut_demuxer_deps="libnut"
2072 libnut_muxer_deps="libnut"
2073 matroska_audio_muxer_select="matroska_muxer"
2074 matroska_demuxer_select="riffdec"
2075 matroska_demuxer_suggest="bzlib lzo zlib"
2076 matroska_muxer_select="riffenc"
2077 mmf_muxer_select="riffenc"
2078 mov_demuxer_select="riffdec"
2079 mov_demuxer_suggest="zlib"
2080 mov_muxer_select="riffenc rtpenc_chain"
2081 mp3_demuxer_select="mpegaudio_parser"
2082 mp4_muxer_select="mov_muxer"
2083 mpegts_muxer_select="adts_muxer latm_muxer"
2084 mpegtsraw_demuxer_select="mpegts_demuxer"
2085 mxf_d10_muxer_select="mxf_muxer"
2086 nut_muxer_select="riffenc"
2087 nuv_demuxer_select="riffdec"
2088 ogg_demuxer_select="golomb"
2089 psp_muxer_select="mov_muxer"
2090 rtp_demuxer_select="sdp_demuxer"
2091 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2092 rtsp_demuxer_select="http_protocol rtpdec"
2093 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2094 sap_demuxer_select="sdp_demuxer"
2095 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2096 sdp_demuxer_select="rtpdec"
2097 smoothstreaming_muxer_select="ismv_muxer"
2098 spdif_muxer_select="aac_parser"
2099 tak_demuxer_select="tak_parser"
2100 tg2_muxer_select="mov_muxer"
2101 tgp_muxer_select="mov_muxer"
2102 vobsub_demuxer_select="mpegps_demuxer"
2103 w64_demuxer_select="wav_demuxer"
2104 w64_muxer_select="wav_muxer"
2105 wav_demuxer_select="riffdec"
2106 wav_muxer_select="riffenc"
2107 webm_muxer_select="riffenc"
2108 wtv_demuxer_select="riffdec"
2109 xmv_demuxer_select="riffdec"
2110 xwma_demuxer_select="riffdec"
2111
2112 # indevs / outdevs
2113 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2114 alsa_outdev_deps="alsa_asoundlib_h"
2115 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2116 caca_outdev_deps="libcaca"
2117 dshow_indev_deps="IBaseFilter"
2118 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2119 dv1394_indev_deps="dv1394"
2120 dv1394_indev_select="dv_demuxer"
2121 fbdev_indev_deps="linux_fb_h"
2122 iec61883_indev_deps="libiec61883"
2123 jack_indev_deps="jack_jack_h sem_timedwait"
2124 lavfi_indev_deps="avfilter"
2125 libcdio_indev_deps="libcdio"
2126 libdc1394_indev_deps="libdc1394"
2127 libv4l2_indev_deps="libv4l2"
2128 openal_indev_deps="openal"
2129 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2130 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2131 pulse_indev_deps="libpulse"
2132 sdl_outdev_deps="sdl"
2133 sndio_indev_deps="sndio_h"
2134 sndio_outdev_deps="sndio_h"
2135 v4l_indev_deps="linux_videodev_h"
2136 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2137 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2138 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2139 vfwcap_indev_extralibs="-lavicap32"
2140 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2141 xv_outdev_extralibs="-lXv -lX11 -lXext"
2142 x11grab_indev_deps="x11grab"
2143
2144 # protocols
2145 bluray_protocol_deps="libbluray"
2146 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2147 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2148 ffrtmpcrypt_protocol_select="tcp_protocol"
2149 ffrtmphttp_protocol_deps="!librtmp_protocol"
2150 ffrtmphttp_protocol_select="http_protocol"
2151 ftp_protocol_select="tcp_protocol"
2152 gopher_protocol_select="network"
2153 httpproxy_protocol_select="tcp_protocol"
2154 http_protocol_select="tcp_protocol"
2155 https_protocol_select="tls_protocol"
2156 librtmp_protocol_deps="librtmp"
2157 librtmpe_protocol_deps="librtmp"
2158 librtmps_protocol_deps="librtmp"
2159 librtmpt_protocol_deps="librtmp"
2160 librtmpte_protocol_deps="librtmp"
2161 mmsh_protocol_select="http_protocol"
2162 mmst_protocol_select="network"
2163 rtmp_protocol_deps="!librtmp_protocol"
2164 rtmp_protocol_select="tcp_protocol"
2165 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2166 rtmps_protocol_deps="!librtmp_protocol"
2167 rtmps_protocol_select="tls_protocol"
2168 rtmpt_protocol_select="ffrtmphttp_protocol"
2169 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2170 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2171 rtp_protocol_select="udp_protocol"
2172 sctp_protocol_deps="struct_sctp_event_subscribe"
2173 sctp_protocol_select="network"
2174 srtp_protocol_select="rtp_protocol"
2175 tcp_protocol_select="network"
2176 tls_protocol_deps_any="openssl gnutls"
2177 tls_protocol_select="tcp_protocol"
2178 udp_protocol_select="network"
2179 unix_protocol_deps="sys_un_h"
2180 unix_protocol_select="network"
2181
2182 # filters
2183 aconvert_filter_deps="swresample"
2184 amovie_filter_deps="avcodec avformat"
2185 aresample_filter_deps="swresample"
2186 ass_filter_deps="libass"
2187 asyncts_filter_deps="avresample"
2188 atempo_filter_deps="avcodec rdft"
2189 azmq_filter_deps="libzmq"
2190 blackframe_filter_deps="gpl"
2191 boxblur_filter_deps="gpl"
2192 colormatrix_filter_deps="gpl"
2193 cropdetect_filter_deps="gpl"
2194 dctdnoiz_filter_deps="avcodec fft"
2195 delogo_filter_deps="gpl"
2196 deshake_filter_deps="avcodec"
2197 deshake_filter_select="dsputil"
2198 drawtext_filter_deps="libfreetype"
2199 ebur128_filter_deps="gpl"
2200 flite_filter_deps="libflite"
2201 frei0r_filter_deps="frei0r dlopen"
2202 frei0r_filter_extralibs='$ldl'
2203 frei0r_src_filter_deps="frei0r dlopen"
2204 frei0r_src_filter_extralibs='$ldl'
2205 geq_filter_deps="gpl"
2206 histeq_filter_deps="gpl"
2207 hqdn3d_filter_deps="gpl"
2208 interlace_filter_deps="gpl"
2209 kerndeint_filter_deps="gpl"
2210 mcdeint_filter_deps="avcodec gpl"
2211 movie_filter_deps="avcodec avformat"
2212 mp_filter_deps="gpl avcodec swscale inline_asm"
2213 mpdecimate_filter_deps="gpl avcodec"
2214 mptestsrc_filter_deps="gpl"
2215 negate_filter_deps="lut_filter"
2216 noise_filter_deps="gpl"
2217 perspective_filter_deps="gpl"
2218 resample_filter_deps="avresample"
2219 ocv_filter_deps="libopencv"
2220 owdenoise_filter_deps="gpl"
2221 pan_filter_deps="swresample"
2222 phase_filter_deps="gpl"
2223 pp_filter_deps="gpl postproc"
2224 pullup_filter_deps="gpl"
2225 removelogo_filter_deps="avcodec avformat swscale"
2226 sab_filter_deps="gpl swscale"
2227 scale_filter_deps="swscale"
2228 smartblur_filter_deps="gpl swscale"
2229 showspectrum_filter_deps="avcodec rdft"
2230 spp_filter_deps="gpl avcodec fft"
2231 stereo3d_filter_deps="gpl"
2232 subtitles_filter_deps="avformat avcodec libass"
2233 super2xsai_filter_deps="gpl"
2234 tinterlace_filter_deps="gpl"
2235 vidstabdetect_filter_deps="libvidstab"
2236 vidstabtransform_filter_deps="libvidstab"
2237 yadif_filter_deps="gpl"
2238 pixfmts_super2xsai_test_deps="super2xsai_filter"
2239 tinterlace_merge_test_deps="tinterlace_filter"
2240 tinterlace_pad_test_deps="tinterlace_filter"
2241 zmq_filter_deps="libzmq"
2242
2243 # libraries
2244 avcodec_deps="avutil"
2245 avdevice_deps="avutil avcodec avformat"
2246 avfilter_deps="avutil"
2247 avformat_deps="avutil avcodec"
2248 avresample_deps="avutil"
2249 postproc_deps="avutil gpl"
2250 swscale_deps="avutil"
2251
2252 # programs
2253 ffmpeg_deps="avcodec avfilter avformat swscale swresample"
2254 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2255                null_filter
2256                setpts_filter trim_filter"
2257 ffplay_deps="avcodec avformat swscale swresample sdl"
2258 ffplay_select="rdft crop_filter"
2259 ffprobe_deps="avcodec avformat"
2260 ffserver_deps="avformat fork sarestart"
2261 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2262 ffserver_extralibs='$ldl'
2263
2264 # documentation
2265 podpages_deps="perl"
2266 manpages_deps="perl pod2man"
2267 htmlpages_deps="texi2html"
2268 txtpages_deps="makeinfo"
2269 doc_deps_any="manpages htmlpages podpages txtpages"
2270
2271 # default parameters
2272
2273 logfile="config.log"
2274
2275 # installation paths
2276 prefix_default="/usr/local"
2277 bindir_default='${prefix}/bin'
2278 datadir_default='${prefix}/share/ffmpeg'
2279 docdir_default='${prefix}/share/doc/ffmpeg'
2280 incdir_default='${prefix}/include'
2281 libdir_default='${prefix}/lib'
2282 mandir_default='${prefix}/share/man'
2283 shlibdir_default="$libdir_default"
2284
2285 # toolchain
2286 ar_default="ar"
2287 cc_default="gcc"
2288 cxx_default="g++"
2289 host_cc_default="gcc"
2290 cp_f="cp -f"
2291 install="install"
2292 ln_s="ln -s -f"
2293 nm_default="nm -g"
2294 objformat="elf"
2295 pkg_config_default=pkg-config
2296 ranlib="ranlib"
2297 strip_default="strip"
2298 yasmexe_default="yasm"
2299
2300 nogas=":"
2301
2302 # machine
2303 arch_default=$(uname -m)
2304 cpu="generic"
2305
2306 # OS
2307 target_os_default=$(tolower $(uname -s))
2308 host_os=$target_os_default
2309
2310 # configurable options
2311 enable $PROGRAM_LIST
2312 enable $DOCUMENT_LIST
2313 enable $(filter_out avresample $LIBRARY_LIST)
2314 enable stripping
2315
2316 enable asm
2317 enable debug
2318 enable doc
2319 enable optimizations
2320 enable runtime_cpudetect
2321 enable safe_bitstream_reader
2322 enable static
2323 enable swscale_alpha
2324
2325 # Enable hwaccels by default.
2326 enable dxva2 vaapi vdpau
2327
2328 # build settings
2329 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2330 LIBPREF="lib"
2331 LIBSUF=".a"
2332 FULLNAME='$(NAME)$(BUILDSUF)'
2333 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2334 SLIBPREF="lib"
2335 SLIBSUF=".so"
2336 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2337 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2338 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2339 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2340 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2341 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2342
2343 asflags_filter=echo
2344 cflags_filter=echo
2345 ldflags_filter=echo
2346
2347 AS_C='-c'
2348 AS_O='-o $@'
2349 CC_C='-c'
2350 CC_E='-E -o $@'
2351 CC_O='-o $@'
2352 CXX_C='-c'
2353 CXX_O='-o $@'
2354 LD_O='-o $@'
2355 LD_LIB='-l%'
2356 LD_PATH='-L'
2357 HOSTCC_C='-c'
2358 HOSTCC_O='-o $@'
2359 HOSTLD_O='-o $@'
2360
2361 host_cflags='-O3 -g'
2362 host_cppflags='-D_ISOC99_SOURCE -D_XOPEN_SOURCE=600'
2363 host_libs='-lm'
2364 host_cflags_filter=echo
2365 host_ldflags_filter=echo
2366
2367 target_path='$(CURDIR)'
2368
2369 # since the object filename is not given with the -MM flag, the compiler
2370 # is only able to print the basename, and we must add the path ourselves
2371 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2372 DEPFLAGS='-MM'
2373
2374 # find source path
2375 if test -f configure; then
2376     source_path=.
2377 else
2378     source_path=$(cd $(dirname "$0"); pwd)
2379     echo "$source_path" | grep -q '[[:blank:]]' &&
2380         die "Out of tree builds are impossible with whitespace in source path."
2381     test -e "$source_path/config.h" &&
2382         die "Out of tree builds are impossible with config.h in source dir."
2383 fi
2384
2385 for v in "$@"; do
2386     r=${v#*=}
2387     l=${v%"$r"}
2388     r=$(sh_quote "$r")
2389     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2390 done
2391
2392 find_things(){
2393     thing=$1
2394     pattern=$2
2395     file=$source_path/$3
2396     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2397 }
2398
2399 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2400 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2401 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2402 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2403 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2404 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2405 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2406 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2407 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2408 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2409 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2410
2411 ALL_COMPONENTS="
2412     $BSF_LIST
2413     $DECODER_LIST
2414     $DEMUXER_LIST
2415     $ENCODER_LIST
2416     $FILTER_LIST
2417     $HWACCEL_LIST
2418     $INDEV_LIST
2419     $MUXER_LIST
2420     $OUTDEV_LIST
2421     $PARSER_LIST
2422     $PROTOCOL_LIST
2423 "
2424
2425 for n in $COMPONENT_LIST; do
2426     v=$(toupper ${n%s})_LIST
2427     eval enable \$$v
2428     eval ${n}_if_any="\$$v"
2429 done
2430
2431 enable $ARCH_EXT_LIST
2432
2433 die_unknown(){
2434     echo "Unknown option \"$1\"."
2435     echo "See $0 --help for available options."
2436     exit 1
2437 }
2438
2439 print_3_columns() {
2440     cat | tr ' ' '\n' | sort | pr -r -3 -t
2441 }
2442
2443 show_list() {
2444     suffix=_$1
2445     shift
2446     echo $* | sed s/$suffix//g | print_3_columns
2447     exit 0
2448 }
2449
2450 rand_list(){
2451     IFS=', '
2452     set -- $*
2453     unset IFS
2454     for thing; do
2455         comp=${thing%:*}
2456         prob=${thing#$comp}
2457         prob=${prob#:}
2458         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2459         echo "prob ${prob:-0.5}"
2460         printf '%s\n' $comp
2461     done
2462 }
2463
2464 do_random(){
2465     action=$1
2466     shift
2467     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2468     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2469 }
2470
2471 for opt do
2472     optval="${opt#*=}"
2473     case "$opt" in
2474         --extra-ldflags=*)
2475             add_ldflags $optval
2476         ;;
2477         --extra-libs=*)
2478             add_extralibs $optval
2479         ;;
2480         --disable-devices)
2481             disable $INDEV_LIST $OUTDEV_LIST
2482         ;;
2483         --enable-debug=*)
2484             debuglevel="$optval"
2485         ;;
2486         --disable-programs)
2487             disable $PROGRAM_LIST
2488         ;;
2489         --disable-everything)
2490             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2491         ;;
2492         --disable-all)
2493             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2494             disable $LIBRARY_LIST $PROGRAM_LIST doc
2495         ;;
2496         --enable-random|--disable-random)
2497             action=${opt%%-random}
2498             do_random ${action#--} $COMPONENT_LIST
2499         ;;
2500         --enable-random=*|--disable-random=*)
2501             action=${opt%%-random=*}
2502             do_random ${action#--} $optval
2503         ;;
2504         --enable-*=*|--disable-*=*)
2505             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2506             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2507             eval list=\$$(toupper $thing)_LIST
2508             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2509             list=$(filter "$name" $list)
2510             [ "$list" = "" ] && warn "Option $opt did not match anything"
2511             $action $list
2512         ;;
2513         --enable-?*|--disable-?*)
2514             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2515             if is_in $option $COMPONENT_LIST; then
2516                 test $action = disable && action=unset
2517                 eval $action \$$(toupper ${option%s})_LIST
2518             elif is_in $option $CMDLINE_SELECT; then
2519                 $action $option
2520             else
2521                 die_unknown $opt
2522             fi
2523         ;;
2524         --list-*)
2525             NAME="${opt#--list-}"
2526             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2527             NAME=${NAME%s}
2528             eval show_list $NAME \$$(toupper $NAME)_LIST
2529         ;;
2530         --help|-h) show_help
2531         ;;
2532         --fatal-warnings) enable fatal_warnings
2533         ;;
2534         *)
2535             optname="${opt%%=*}"
2536             optname="${optname#--}"
2537             optname=$(echo "$optname" | sed 's/-/_/g')
2538             if is_in $optname $CMDLINE_SET; then
2539                 eval $optname='$optval'
2540             elif is_in $optname $CMDLINE_APPEND; then
2541                 append $optname "$optval"
2542             else
2543                 die_unknown $opt
2544             fi
2545         ;;
2546     esac
2547 done
2548
2549 disabled logging && logfile=/dev/null
2550
2551 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2552 set >> $logfile
2553
2554 test -n "$cross_prefix" && enable cross_compile
2555
2556 if enabled cross_compile; then
2557     test -n "$arch" && test -n "$target_os" ||
2558         die "Must specify target arch and OS when cross-compiling"
2559 fi
2560
2561 ar_default="${cross_prefix}${ar_default}"
2562 cc_default="${cross_prefix}${cc_default}"
2563 cxx_default="${cross_prefix}${cxx_default}"
2564 nm_default="${cross_prefix}${nm_default}"
2565 pkg_config_default="${cross_prefix}${pkg_config_default}"
2566 ranlib="${cross_prefix}${ranlib}"
2567 strip_default="${cross_prefix}${strip_default}"
2568
2569 sysinclude_default="${sysroot}/usr/include"
2570
2571 test -n "$valgrind" && toolchain="valgrind-memcheck"
2572
2573 case "$toolchain" in
2574     clang-asan)
2575         cc_default="clang"
2576         add_cflags  -fsanitize=address
2577         add_ldflags -fsanitize=address
2578     ;;
2579     clang-tsan)
2580         cc_default="clang"
2581         add_cflags  -fsanitize=thread -pie
2582         add_ldflags -fsanitize=thread -pie
2583     ;;
2584     gcc-asan)
2585         cc_default="gcc"
2586         add_cflags  -fsanitize=address
2587         add_ldflags -fsanitize=address
2588     ;;
2589     gcc-tsan)
2590         cc_default="gcc"
2591         add_cflags  -fsanitize=thread -pie -fPIC
2592         add_ldflags -fsanitize=thread -pie -fPIC
2593     ;;
2594     valgrind-massif)
2595         target_exec_default=${valgrind:-"valgrind"}
2596         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"
2597     ;;
2598     valgrind-memcheck)
2599         target_exec_default=${valgrind:-"valgrind"}
2600         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2601     ;;
2602     msvc)
2603         cc_default="c99wrap cl"
2604         ld_default="c99wrap link"
2605         nm_default="dumpbin -symbols"
2606         ar_default="lib"
2607         target_os_default="win32"
2608     ;;
2609     icl)
2610         cc_default="c99wrap -noconv icl"
2611         ld_default="c99wrap xilink"
2612         nm_default="dumpbin -symbols"
2613         ar_default="xilib"
2614         target_os_default="win32"
2615     ;;
2616     gcov)
2617         add_cflags  -fprofile-arcs -ftest-coverage
2618         add_ldflags -fprofile-arcs -ftest-coverage
2619     ;;
2620     ?*)
2621         die "Unknown toolchain $toolchain"
2622     ;;
2623 esac
2624
2625 set_default arch cc cxx pkg_config strip sysinclude target_exec target_os yasmexe
2626 enabled cross_compile || host_cc_default=$cc
2627 set_default host_cc
2628
2629 if ! $pkg_config --version >/dev/null 2>&1; then
2630     warn "$pkg_config not found, library detection may fail."
2631     pkg_config=false
2632 fi
2633
2634 exesuf() {
2635     case $1 in
2636         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2637     esac
2638 }
2639
2640 EXESUF=$(exesuf $target_os)
2641 HOSTEXESUF=$(exesuf $host_os)
2642
2643 # set temporary file name
2644 : ${TMPDIR:=$TEMPDIR}
2645 : ${TMPDIR:=$TMP}
2646 : ${TMPDIR:=/tmp}
2647
2648 if ! check_cmd mktemp -u XXXXXX; then
2649     # simple replacement for missing mktemp
2650     # NOT SAFE FOR GENERAL USE
2651     mktemp(){
2652         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2653     }
2654 fi
2655
2656 tmpfile(){
2657     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2658         (set -C; exec > $tmp) 2>/dev/null ||
2659         die "Unable to create temporary file in $TMPDIR."
2660     append TMPFILES $tmp
2661     eval $1=$tmp
2662 }
2663
2664 trap 'rm -f -- $TMPFILES' EXIT
2665
2666 tmpfile TMPASM .asm
2667 tmpfile TMPC   .c
2668 tmpfile TMPCPP .cpp
2669 tmpfile TMPE   $EXESUF
2670 tmpfile TMPH   .h
2671 tmpfile TMPO   .o
2672 tmpfile TMPS   .S
2673 tmpfile TMPSH  .sh
2674 tmpfile TMPV   .ver
2675
2676 unset -f mktemp
2677
2678 chmod +x $TMPE
2679
2680 # make sure we can execute files in $TMPDIR
2681 cat > $TMPSH 2>> $logfile <<EOF
2682 #! /bin/sh
2683 EOF
2684 chmod +x $TMPSH >> $logfile 2>&1
2685 if ! $TMPSH >> $logfile 2>&1; then
2686     cat <<EOF
2687 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2688 variable to another directory and make sure that it is not mounted noexec.
2689 EOF
2690     die "Sanity test failed."
2691 fi
2692
2693 ccc_flags(){
2694     for flag; do
2695         case $flag in
2696             -std=c99)           echo -c99                       ;;
2697             -mcpu=*)            echo -arch ${flag#*=}           ;;
2698             -mieee)             echo -ieee                      ;;
2699             -O*|-fast)          echo $flag                      ;;
2700             -fno-math-errno)    echo -assume nomath_errno       ;;
2701             -g)                 echo -g3                        ;;
2702             -Wall)              echo -msg_enable level2         ;;
2703             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2704             -Wl,*)              echo $flag                      ;;
2705             -f*|-W*)                                            ;;
2706             *)                  echo $flag                      ;;
2707         esac
2708    done
2709 }
2710
2711 cparser_flags(){
2712     for flag; do
2713         case $flag in
2714             -Wno-switch)             echo -Wno-switch-enum ;;
2715             -Wno-format-zero-length) ;;
2716             -Wdisabled-optimization) ;;
2717             -Wno-pointer-sign)       echo -Wno-other ;;
2718             *)                       echo $flag ;;
2719         esac
2720     done
2721 }
2722
2723 msvc_common_flags(){
2724     for flag; do
2725         case $flag in
2726             # In addition to specifying certain flags under the compiler
2727             # specific filters, they must be specified here as well or else the
2728             # generic catch all at the bottom will print the original flag.
2729             -Wall)                ;;
2730             -std=c99)             ;;
2731             # Common flags
2732             -fomit-frame-pointer) ;;
2733             -g)                   echo -Z7 ;;
2734             -fno-math-errno)      ;;
2735             -fno-common)          ;;
2736             -fno-signed-zeros)    ;;
2737             -fPIC)                ;;
2738             -mthumb)              ;;
2739             -march=*)             ;;
2740             -lz)                  echo zlib.lib ;;
2741             -lavifil32)           echo vfw32.lib ;;
2742             -lavicap32)           echo vfw32.lib user32.lib ;;
2743             -l*)                  echo ${flag#-l}.lib ;;
2744             *)                    echo $flag ;;
2745         esac
2746     done
2747 }
2748
2749 msvc_flags(){
2750     msvc_common_flags "$@"
2751     for flag; do
2752         case $flag in
2753             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2754                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2755                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2756                                        -wd4554 \
2757                                        -wd4996 -wd4273 ;;
2758         esac
2759     done
2760 }
2761
2762 icl_flags(){
2763     msvc_common_flags "$@"
2764     for flag; do
2765         case $flag in
2766             # Despite what Intel's documentation says -Wall, which is supported
2767             # on Windows, does enable remarks so disable them here.
2768             -Wall)                echo $flag -Qdiag-disable:remark ;;
2769             -std=c99)             echo -Qstd=c99 ;;
2770         esac
2771     done
2772 }
2773
2774 pgi_flags(){
2775     for flag; do
2776         case $flag in
2777             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2778             -fomit-frame-pointer) echo -Mnoframe ;;
2779             -g)                   echo -gopt ;;
2780             *)                    echo $flag ;;
2781         esac
2782     done
2783 }
2784
2785 suncc_flags(){
2786     for flag; do
2787         case $flag in
2788             -march=*|-mcpu=*)
2789                 case "${flag#*=}" in
2790                     native)                   echo -xtarget=native       ;;
2791                     v9|niagara)               echo -xarch=sparc          ;;
2792                     ultrasparc)               echo -xarch=sparcvis       ;;
2793                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2794                     i586|pentium)             echo -xchip=pentium        ;;
2795                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2796                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2797                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2798                     pentium4*)          echo -xtarget=pentium4           ;;
2799                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2800                     *-sse3)             echo -xarch=sse3                 ;;
2801                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2802                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2803                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2804                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
2805                     bdver*)                    echo -xarch=avx           ;;
2806                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2807                     k8|opteron|athlon64|athlon-fx)
2808                                                echo -xarch=sse2a         ;;
2809                     athlon*)                   echo -xarch=pentium_proa  ;;
2810                 esac
2811                 ;;
2812             -std=c99)             echo -xc99              ;;
2813             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2814             -fPIC)                echo -KPIC -xcode=pic32 ;;
2815             -W*,*)                echo $flag              ;;
2816             -f*-*|-W*|-mimpure-text)                      ;;
2817             -shared)              echo -G                 ;;
2818             *)                    echo $flag              ;;
2819         esac
2820     done
2821 }
2822
2823 tms470_flags(){
2824     for flag; do
2825         case $flag in
2826             -march=*|-mcpu=*)
2827                 case "${flag#*=}" in
2828                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2829                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2830                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2831                     armv6*|arm11*)          echo -mv=6   ;;
2832                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
2833                                             echo -mv=5e  ;;
2834                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
2835                 esac
2836                 ;;
2837             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
2838             -mfpu=vfp)      echo --float_support=vfpv2        ;;
2839             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
2840             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
2841             -msoft-float)   echo --float_support=vfplib       ;;
2842             -O[0-3]|-mf=*)  echo $flag                        ;;
2843             -g)             echo -g -mn                       ;;
2844             -pds=*)         echo $flag                        ;;
2845             -D*|-I*)        echo $flag                        ;;
2846             --gcc|--abi=*)  echo $flag                        ;;
2847             -me)            echo $flag                        ;;
2848         esac
2849     done
2850 }
2851
2852 probe_cc(){
2853     pfx=$1
2854     _cc=$2
2855
2856     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
2857     unset _ld_o _ldflags _ld_lib _ld_path
2858     unset _depflags _DEPCMD _DEPFLAGS
2859     _flags_filter=echo
2860
2861     if $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
2862         _type=llvm_gcc
2863         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
2864         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
2865         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2866         _cflags_speed='-O3'
2867         _cflags_size='-Os'
2868     elif $_cc -v 2>&1 | grep -qi ^gcc; then
2869         _type=gcc
2870         gcc_version=$($_cc --version | head -n1)
2871         gcc_basever=$($_cc -dumpversion)
2872         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
2873         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
2874         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
2875         if ! $_cc -dumpversion | grep -q '^2\.'; then
2876             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2877         fi
2878         _cflags_speed='-O3'
2879         _cflags_size='-Os'
2880     elif $_cc --version 2>/dev/null | grep -q ^icc; then
2881         _type=icc
2882         _ident=$($_cc --version | head -n1)
2883         _depflags='-MMD'
2884         _cflags_speed='-O3'
2885         _cflags_size='-Os'
2886         _cflags_noopt='-O1'
2887     elif $_cc -v 2>&1 | grep -q xlc; then
2888         _type=xlc
2889         _ident=$($_cc -qversion 2>/dev/null | head -n1)
2890         _cflags_speed='-O5'
2891         _cflags_size='-O5 -qcompact'
2892     elif $_cc -V 2>/dev/null | grep -q Compaq; then
2893         _type=ccc
2894         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
2895         _DEPFLAGS='-M'
2896         _cflags_speed='-fast'
2897         _cflags_size='-O1'
2898         _flags_filter=ccc_flags
2899     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
2900         test -d "$sysroot" || die "No valid sysroot specified."
2901         _type=armcc
2902         _ident=$($_cc --vsn | head -n1)
2903         armcc_conf="$PWD/armcc.conf"
2904         $_cc --arm_linux_configure                 \
2905              --arm_linux_config_file="$armcc_conf" \
2906              --configure_sysroot="$sysroot"        \
2907              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
2908              die "Error creating armcc configuration file."
2909         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
2910         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
2911         as_default="${cross_prefix}gcc"
2912         _depflags='-MMD'
2913         _cflags_speed='-O3'
2914         _cflags_size='-Os'
2915     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
2916         _type=tms470
2917         _ident=$($_cc -version | head -n1 | tr -s ' ')
2918         _flags='--gcc --abi=eabi -me'
2919         _cc_e='-ppl -fe=$@'
2920         _cc_o='-fe=$@'
2921         _depflags='-ppa -ppd=$(@:.o=.d)'
2922         _cflags_speed='-O3 -mf=5'
2923         _cflags_size='-O3 -mf=2'
2924         _flags_filter=tms470_flags
2925     elif $_cc -v 2>&1 | grep -q clang; then
2926         _type=clang
2927         _ident=$($_cc --version | head -n1)
2928         _depflags='-MMD'
2929         _cflags_speed='-O3'
2930         _cflags_size='-Os'
2931     elif $_cc -V 2>&1 | grep -q Sun; then
2932         _type=suncc
2933         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
2934         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
2935         _DEPFLAGS='-xM1 -xc99'
2936         _ldflags='-std=c99'
2937         _cflags_speed='-O5'
2938         _cflags_size='-O5 -xspace'
2939         _flags_filter=suncc_flags
2940     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
2941         _type=pathscale
2942         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2943         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2944         _cflags_speed='-O2'
2945         _cflags_size='-Os'
2946         _flags_filter='filter_out -Wdisabled-optimization'
2947     elif $_cc -v 2>&1 | grep -q Open64; then
2948         _type=open64
2949         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
2950         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
2951         _cflags_speed='-O2'
2952         _cflags_size='-Os'
2953         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
2954     elif $_cc -V 2>&1 | grep -q Portland; then
2955         _type=pgi
2956         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
2957         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
2958         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
2959         _cflags_size="-O2 -Munroll=c:1 $opt_common"
2960         _cflags_noopt="-O"
2961         _flags_filter=pgi_flags
2962     elif $_cc 2>&1 | grep -q Microsoft; then
2963         _type=msvc
2964         _ident=$($cc 2>&1 | head -n1)
2965         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
2966         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
2967         _cflags_speed="-O2"
2968         _cflags_size="-O1"
2969         # Nonstandard output options, to avoid msys path conversion issues.
2970         # Relies on wrapper to remap it.
2971         if $_cc 2>&1 | grep -q Linker; then
2972             _ld_o='-out $@'
2973         else
2974             _ld_o='-Fe$@'
2975         fi
2976         _cc_o='-Fo $@'
2977         _cc_e='-P -Fi $@'
2978         _flags_filter=msvc_flags
2979         _ld_lib='lib%.a'
2980         _ld_path='-libpath:'
2981         _flags='-nologo'
2982         _cflags='-D_USE_MATH_DEFINES -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
2983         if [ $pfx = hostcc ]; then
2984             append _cflags -Dsnprintf=_snprintf
2985         fi
2986         disable stripping
2987     elif $_cc 2>&1 | grep -q Intel; then
2988         _type=icl
2989         _ident=$($cc 2>&1 | head -n1)
2990         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
2991         # Not only is O3 broken on 13.x+ but it is slower on all previous
2992         # versions (tested) as well.
2993         _cflags_speed="-O2"
2994         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
2995         # Nonstandard output options, to avoid msys path conversion issues.
2996         # Relies on wrapper to remap it.
2997         if $_cc 2>&1 | grep -q Linker; then
2998             _ld_o='-out $@'
2999         else
3000             _ld_o='-Fe$@'
3001         fi
3002         _cc_o='-Fo $@'
3003         _cc_e='-P'
3004         _flags_filter=icl_flags
3005         _ld_lib='lib%.a'
3006         _ld_path='-libpath:'
3007         # -Qdiag-error to make icl error when seeing certain unknown arguments
3008         _flags='-nologo -Qdiag-error:4044,10157'
3009         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3010         # with MSVC which enables it by default.
3011         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3012         if [ $pfx = hostcc ]; then
3013             append _cflags -Dsnprintf=_snprintf
3014         fi
3015     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3016         _type=cparser
3017         _ident=$($_cc --version | head -n1)
3018         _depflags='-MMD'
3019         _cflags_speed='-O4'
3020         _cflags_size='-O2'
3021         _flags_filter=cparser_flags
3022     fi
3023
3024     eval ${pfx}_type=\$_type
3025     eval ${pfx}_ident=\$_ident
3026 }
3027
3028 set_ccvars(){
3029     eval ${1}_C=\${_cc_c-\${${1}_C}}
3030     eval ${1}_E=\${_cc_e-\${${1}_E}}
3031     eval ${1}_O=\${_cc_o-\${${1}_O}}
3032
3033     if [ -n "$_depflags" ]; then
3034         eval ${1}_DEPFLAGS=\$_depflags
3035     else
3036         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3037         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3038         eval DEP${1}FLAGS=\$_flags
3039     fi
3040 }
3041
3042 probe_cc cc "$cc"
3043 cflags_filter=$_flags_filter
3044 cflags_speed=$_cflags_speed
3045 cflags_size=$_cflags_size
3046 cflags_noopt=$_cflags_noopt
3047 add_cflags $_flags $_cflags
3048 cc_ldflags=$_ldflags
3049 set_ccvars CC
3050
3051 probe_cc hostcc "$host_cc"
3052 host_cflags_filter=$_flags_filter
3053 add_host_cflags  $_flags $_cflags
3054 set_ccvars HOSTCC
3055
3056 test -n "$cc_type" && enable $cc_type ||
3057     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3058
3059 : ${as_default:=$cc}
3060 : ${dep_cc_default:=$cc}
3061 : ${ld_default:=$cc}
3062 : ${host_ld_default:=$host_cc}
3063 set_default ar as dep_cc ld host_ld
3064
3065 probe_cc as "$as"
3066 asflags_filter=$_flags_filter
3067 add_asflags $_flags $_cflags
3068 set_ccvars AS
3069
3070 probe_cc ld "$ld"
3071 ldflags_filter=$_flags_filter
3072 add_ldflags $_flags $_ldflags
3073 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3074 LD_O=${_ld_o-$LD_O}
3075 LD_LIB=${_ld_lib-$LD_LIB}
3076 LD_PATH=${_ld_path-$LD_PATH}
3077
3078 probe_cc hostld "$host_ld"
3079 host_ldflags_filter=$_flags_filter
3080 add_host_ldflags $_flags $_ldflags
3081 HOSTLD_O=${_ld_o-$HOSTLD_O}
3082
3083 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3084     probe_cc depcc "$dep_cc"
3085     CCDEP=${_DEPCMD:-$DEPCMD}
3086     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3087     DEPCCFLAGS=$_flags
3088 fi
3089
3090 if $ar 2>&1 | grep -q Microsoft; then
3091     arflags="-nologo"
3092     ar_o='-out:$@'
3093 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3094     arflags="rq"
3095     ar_o='$@'
3096 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3097     arflags='-Xany -r -c'
3098     ar_o='$@'
3099 else
3100     arflags="rc"
3101     ar_o='$@'
3102 fi
3103
3104 add_cflags $extra_cflags
3105 add_cxxflags $extra_cxxflags
3106 add_asflags $extra_cflags
3107
3108 if test -n "$sysroot"; then
3109     case "$cc_type" in
3110         gcc|llvm_gcc|clang)
3111             add_cppflags --sysroot="$sysroot"
3112             add_ldflags --sysroot="$sysroot"
3113         ;;
3114         tms470)
3115             add_cppflags -I"$sysinclude"
3116             add_ldflags  --sysroot="$sysroot"
3117         ;;
3118     esac
3119 fi
3120
3121 if test "$cpu" = host; then
3122     enabled cross_compile &&
3123         die "--cpu=host makes no sense when cross-compiling."
3124
3125     case "$cc_type" in
3126         gcc|llvm_gcc)
3127             check_native(){
3128                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3129                 sed -n "/cc1.*$1=/{
3130                             s/.*$1=\\([^ ]*\\).*/\\1/
3131                             p
3132                             q
3133                         }" $TMPE
3134             }
3135             cpu=$(check_native -march || check_native -mcpu)
3136         ;;
3137     esac
3138
3139     test "${cpu:-host}" = host &&
3140         die "--cpu=host not supported with compiler $cc"
3141 fi
3142
3143 # Deal with common $arch aliases
3144 case "$arch" in
3145     aarch64|arm64)
3146         arch="aarch64"
3147     ;;
3148     arm*|iPad*|iPhone*)
3149         arch="arm"
3150     ;;
3151     mips*|IP*)
3152         arch="mips"
3153     ;;
3154     parisc*|hppa*)
3155         arch="parisc"
3156     ;;
3157     "Power Macintosh"|ppc*|powerpc*)
3158         arch="ppc"
3159     ;;
3160     s390|s390x)
3161         arch="s390"
3162     ;;
3163     sh4|sh)
3164         arch="sh4"
3165     ;;
3166     sun4u|sparc*)
3167         arch="sparc"
3168     ;;
3169     tilegx|tile-gx)
3170         arch="tilegx"
3171     ;;
3172     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3173         arch="x86"
3174     ;;
3175 esac
3176
3177 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3178 enable $arch
3179
3180 # Add processor-specific flags
3181 if enabled aarch64; then
3182
3183     case $cpu in
3184         armv*)
3185             cpuflags="-march=$cpu"
3186         ;;
3187         *)
3188             cpuflags="-mcpu=$cpu"
3189         ;;
3190     esac
3191
3192 elif enabled alpha; then
3193
3194     cpuflags="-mcpu=$cpu"
3195
3196 elif enabled arm; then
3197
3198     check_arm_arch() {
3199         check_cpp_condition stddef.h \
3200             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3201             $cpuflags
3202     }
3203
3204     probe_arm_arch() {
3205         if   check_arm_arch 4;        then echo armv4;
3206         elif check_arm_arch 4T;       then echo armv4t;
3207         elif check_arm_arch 5;        then echo armv5;
3208         elif check_arm_arch 5E;       then echo armv5e;
3209         elif check_arm_arch 5T;       then echo armv5t;
3210         elif check_arm_arch 5TE;      then echo armv5te;
3211         elif check_arm_arch 5TEJ;     then echo armv5te;
3212         elif check_arm_arch 6;        then echo armv6;
3213         elif check_arm_arch 6J;       then echo armv6j;
3214         elif check_arm_arch 6K;       then echo armv6k;
3215         elif check_arm_arch 6Z;       then echo armv6z;
3216         elif check_arm_arch 6ZK;      then echo armv6zk;
3217         elif check_arm_arch 6T2;      then echo armv6t2;
3218         elif check_arm_arch 7;        then echo armv7;
3219         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3220         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3221         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3222         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3223         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3224         fi
3225     }
3226
3227     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3228
3229     case $cpu in
3230         armv*)
3231             cpuflags="-march=$cpu"
3232             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3233         ;;
3234         *)
3235             cpuflags="-mcpu=$cpu"
3236             case $cpu in
3237                 cortex-a*)                               subarch=armv7a  ;;
3238                 cortex-r*)                               subarch=armv7r  ;;
3239                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3240                 arm11*)                                  subarch=armv6   ;;
3241                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3242                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3243                 *)                             subarch=$(probe_arm_arch) ;;
3244             esac
3245         ;;
3246     esac
3247
3248     case "$subarch" in
3249         armv5t*)    enable fast_clz                ;;
3250         armv[6-8]*) enable fast_clz fast_unaligned ;;
3251     esac
3252
3253 elif enabled avr32; then
3254
3255     case $cpu in
3256         ap7[02]0[0-2])
3257             subarch="avr32_ap"
3258             cpuflags="-mpart=$cpu"
3259         ;;
3260         ap)
3261             subarch="avr32_ap"
3262             cpuflags="-march=$cpu"
3263         ;;
3264         uc3[ab]*)
3265             subarch="avr32_uc"
3266             cpuflags="-mcpu=$cpu"
3267         ;;
3268         uc)
3269             subarch="avr32_uc"
3270             cpuflags="-march=$cpu"
3271         ;;
3272     esac
3273
3274 elif enabled bfin; then
3275
3276     cpuflags="-mcpu=$cpu"
3277
3278 elif enabled mips; then
3279
3280     cpuflags="-march=$cpu"
3281
3282     case $cpu in
3283         24kc)
3284             disable mipsfpu
3285             disable mipsdspr1
3286             disable mipsdspr2
3287         ;;
3288         24kf*)
3289             disable mipsdspr1
3290             disable mipsdspr2
3291         ;;
3292         24kec|34kc|1004kc)
3293             disable mipsfpu
3294             disable mipsdspr2
3295         ;;
3296         24kef*|34kf*|1004kf*)
3297             disable mipsdspr2
3298         ;;
3299         74kc)
3300             disable mipsfpu
3301         ;;
3302     esac
3303
3304 elif enabled ppc; then
3305
3306     case $(tolower $cpu) in
3307         601|ppc601|powerpc601)
3308             cpuflags="-mcpu=601"
3309             disable altivec
3310         ;;
3311         603*|ppc603*|powerpc603*)
3312             cpuflags="-mcpu=603"
3313             disable altivec
3314         ;;
3315         604*|ppc604*|powerpc604*)
3316             cpuflags="-mcpu=604"
3317             disable altivec
3318         ;;
3319         g3|75*|ppc75*|powerpc75*)
3320             cpuflags="-mcpu=750"
3321             disable altivec
3322         ;;
3323         g4|745*|ppc745*|powerpc745*)
3324             cpuflags="-mcpu=7450"
3325         ;;
3326         74*|ppc74*|powerpc74*)
3327             cpuflags="-mcpu=7400"
3328         ;;
3329         g5|970|ppc970|powerpc970)
3330             cpuflags="-mcpu=970"
3331         ;;
3332         power[3-7]*)
3333             cpuflags="-mcpu=$cpu"
3334         ;;
3335         cell)
3336             cpuflags="-mcpu=cell"
3337             enable ldbrx
3338         ;;
3339         e500mc)
3340             cpuflags="-mcpu=e500mc"
3341             disable altivec
3342         ;;
3343         e500v2)
3344             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3345             disable altivec
3346         ;;
3347         e500)
3348             cpuflags="-mcpu=8540 -mhard-float"
3349             disable altivec
3350         ;;
3351     esac
3352
3353 elif enabled sparc; then
3354
3355     case $cpu in
3356         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3357             cpuflags="-mcpu=$cpu"
3358             disable vis
3359         ;;
3360         ultrasparc*|niagara[234])
3361             cpuflags="-mcpu=$cpu"
3362         ;;
3363     esac
3364
3365 elif enabled x86; then
3366
3367     case $cpu in
3368         i[345]86|pentium)
3369             cpuflags="-march=$cpu"
3370             disable mmx
3371         ;;
3372         # targets that do NOT support nopl and conditional mov (cmov)
3373         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3374             cpuflags="-march=$cpu"
3375             disable i686
3376         ;;
3377         # targets that do support nopl and conditional mov (cmov)
3378         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3379             cpuflags="-march=$cpu"
3380             enable i686
3381             enable fast_cmov
3382         ;;
3383         # targets that do support conditional mov but on which it's slow
3384         pentium4|pentium4m|prescott|nocona)
3385             cpuflags="-march=$cpu"
3386             enable i686
3387             disable fast_cmov
3388         ;;
3389     esac
3390
3391 fi
3392
3393 if [ "$cpu" != generic ]; then
3394     add_cflags  $cpuflags
3395     add_asflags $cpuflags
3396 fi
3397
3398 # compiler sanity check
3399 check_exec <<EOF
3400 int main(void){ return 0; }
3401 EOF
3402 if test "$?" != 0; then
3403     echo "$cc is unable to create an executable file."
3404     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3405         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3406         echo "Only do this if you know what cross compiling means."
3407     fi
3408     die "C compiler test failed."
3409 fi
3410
3411 add_cppflags -D_ISOC99_SOURCE
3412 add_cxxflags -D__STDC_CONSTANT_MACROS
3413 check_cflags -std=c99
3414 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3415 #include <stdlib.h>
3416 EOF
3417 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3418 #include <stdlib.h>
3419 EOF
3420
3421 check_host_cflags -std=c99
3422 check_host_cflags -Wall
3423
3424 check_64bit(){
3425     arch32=$1
3426     arch64=$2
3427     expr=$3
3428     check_code cc "" "int test[2*($expr) - 1]" &&
3429         subarch=$arch64 || subarch=$arch32
3430 }
3431
3432 case "$arch" in
3433     aarch64|alpha|ia64)
3434         spic=$shared
3435     ;;
3436     mips)
3437         check_64bit mips mips64 '_MIPS_SIM > 1'
3438         spic=$shared
3439     ;;
3440     parisc)
3441         check_64bit parisc parisc64 'sizeof(void *) > 4'
3442         spic=$shared
3443     ;;
3444     ppc)
3445         check_64bit ppc ppc64 'sizeof(void *) > 4'
3446         spic=$shared
3447     ;;
3448     sparc)
3449         check_64bit sparc sparc64 'sizeof(void *) > 4'
3450         spic=$shared
3451     ;;
3452     x86)
3453         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3454         if test "$subarch" = "x86_64"; then
3455             spic=$shared
3456         fi
3457     ;;
3458     ppc)
3459         check_cc <<EOF && subarch="ppc64"
3460         int test[(int)sizeof(char*) - 7];
3461 EOF
3462     ;;
3463 esac
3464
3465 enable $subarch
3466 enabled spic && enable_weak pic
3467
3468 # OS specific
3469 case $target_os in
3470     aix)
3471         SHFLAGS=-shared
3472         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3473         enabled shared && add_ldflags -Wl,-brtl
3474         ;;
3475     haiku)
3476         prefix_default="/boot/common"
3477         network_extralibs="-lnetwork"
3478         host_libs=
3479         ;;
3480     sunos)
3481         SHFLAGS='-shared -Wl,-h,$$(@F)'
3482         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3483         network_extralibs="-lsocket -lnsl"
3484         add_cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3485         # When using suncc to build, the Solaris linker will mark
3486         # an executable with each instruction set encountered by
3487         # the Solaris assembler.  As our libraries contain their own
3488         # guards for processor-specific code, instead suppress
3489         # generation of the HWCAPS ELF section on Solaris x86 only.
3490         enabled_all suncc x86 &&
3491             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3492             add_ldflags -Wl,-M,mapfile
3493         nm_default='nm -P -g'
3494         ;;
3495     netbsd)
3496         disable symver
3497         oss_indev_extralibs="-lossaudio"
3498         oss_outdev_extralibs="-lossaudio"
3499         enabled gcc || check_ldflags -Wl,-zmuldefs
3500         ;;
3501     openbsd|bitrig)
3502         disable symver
3503         SHFLAGS='-shared'
3504         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3505         SLIB_INSTALL_LINKS=
3506         oss_indev_extralibs="-lossaudio"
3507         oss_outdev_extralibs="-lossaudio"
3508         ;;
3509     dragonfly)
3510         disable symver
3511         ;;
3512     freebsd)
3513         ;;
3514     bsd/os)
3515         add_extralibs -lpoll -lgnugetopt
3516         strip="strip -d"
3517         ;;
3518     darwin)
3519         gas="gas-preprocessor.pl $cc"
3520         enabled ppc && add_asflags -force_cpusubtype_ALL
3521         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3522         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3523         strip="${strip} -x"
3524         add_ldflags -Wl,-dynamic,-search_paths_first
3525         SLIBSUF=".dylib"
3526         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3527         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3528         objformat="macho"
3529         enabled x86_64 && objformat="macho64"
3530         enabled_any pic shared ||
3531             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3532         ;;
3533     mingw32*)
3534         if test $target_os = "mingw32ce"; then
3535             disable network
3536         else
3537             target_os=mingw32
3538         fi
3539         LIBTARGET=i386
3540         if enabled x86_64; then
3541             LIBTARGET="i386:x86-64"
3542         elif enabled arm; then
3543             LIBTARGET=arm-wince
3544         fi
3545         check_ldflags -Wl,--nxcompat
3546         check_ldflags -Wl,--dynamicbase
3547         shlibdir_default="$bindir_default"
3548         SLIBPREF=""
3549         SLIBSUF=".dll"
3550         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3551         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3552         dlltool="${cross_prefix}dlltool"
3553         if check_cmd lib.exe -list; then
3554             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3555             if enabled x86_64; then
3556                 LIBTARGET=x64
3557             fi
3558         elif check_cmd $dlltool --version; then
3559             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3560         fi
3561         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3562         SLIB_INSTALL_LINKS=
3563         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3564         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3565         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3566         objformat="win32"
3567         ranlib=:
3568         enable dos_paths
3569         ;;
3570     win32|win64)
3571         if enabled shared; then
3572             # Link to the import library instead of the normal static library
3573             # for shared libs.
3574             LD_LIB='%.lib'
3575             # Cannot build both shared and static libs with MSVC or icl.
3576             disable static
3577         fi
3578         shlibdir_default="$bindir_default"
3579         SLIBPREF=""
3580         SLIBSUF=".dll"
3581         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3582         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3583         SLIB_CREATE_DEF_CMD='makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3584         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3585         SLIB_INSTALL_LINKS=
3586         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3587         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3588         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3589         objformat="win32"
3590         ranlib=:
3591         enable dos_paths
3592         ;;
3593     cygwin*)
3594         target_os=cygwin
3595         shlibdir_default="$bindir_default"
3596         SLIBPREF="cyg"
3597         SLIBSUF=".dll"
3598         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3599         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3600         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3601         SLIB_INSTALL_LINKS=
3602         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3603         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3604         objformat="win32"
3605         enable dos_paths
3606         ;;
3607     *-dos|freedos|opendos)
3608         network_extralibs="-lsocket"
3609         objformat="coff"
3610         enable dos_paths
3611         add_cppflags -U__STRICT_ANSI__
3612         ;;
3613     linux)
3614         enable dv1394
3615         ;;
3616     irix*)
3617         target_os=irix
3618         ranlib="echo ignoring ranlib"
3619         ;;
3620     os/2*)
3621         strip="lxlite -CS"
3622         ln_s="cp -f"
3623         objformat="aout"
3624         add_cppflags -D_GNU_SOURCE
3625         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3626         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3627         LIBSUF="_s.a"
3628         SLIBPREF=""
3629         SLIBSUF=".dll"
3630         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3631         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3632         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3633             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3634             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3635             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3636             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3637             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3638         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3639             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3640         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3641         enable dos_paths
3642         enable_weak os2threads
3643         ;;
3644     gnu/kfreebsd)
3645         add_cppflags -D_BSD_SOURCE
3646         ;;
3647     gnu)
3648         ;;
3649     qnx)
3650         add_cppflags -D_QNX_SOURCE
3651         network_extralibs="-lsocket"
3652         ;;
3653     symbian)
3654         SLIBSUF=".dll"
3655         enable dos_paths
3656         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3657         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3658         add_ldflags -Wl,--target1-abs,--no-undefined \
3659                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3660                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3661         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3662                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3663                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3664         ;;
3665     osf1)
3666         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3667         ;;
3668     minix)
3669         ;;
3670     plan9)
3671         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3672                      -D_REENTRANT_SOURCE        \
3673                      -D_RESEARCH_SOURCE         \
3674                      -DFD_SETSIZE=96            \
3675                      -DHAVE_SOCK_OPTS
3676         add_compat strtod.o strtod=avpriv_strtod
3677         network_extralibs='-lbsd'
3678         exeobjs=compat/plan9/main.o
3679         disable ffserver
3680         cp_f='cp'
3681         ;;
3682     none)
3683         ;;
3684     *)
3685         die "Unknown OS '$target_os'."
3686         ;;
3687 esac
3688
3689 # determine libc flavour
3690
3691 # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3692 if check_cpp_condition features.h "defined __UCLIBC__"; then
3693     libc_type=uclibc
3694     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3695 elif check_cpp_condition features.h "defined __GLIBC__"; then
3696     libc_type=glibc
3697     add_cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3698 # MinGW headers can be installed on Cygwin, so check for newlib first.
3699 elif check_cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3700     libc_type=newlib
3701     add_cppflags -U__STRICT_ANSI__
3702 elif check_header _mingw.h; then
3703     libc_type=mingw
3704     check_cpp_condition _mingw.h \
3705         "defined (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION > 3) || \
3706             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3707         die "ERROR: MinGW runtime version must be >= 3.15."
3708     add_cppflags -U__STRICT_ANSI__
3709     if check_cpp_condition _mingw.h "defined(__MINGW64_VERSION_MAJOR) && \
3710             __MINGW64_VERSION_MAJOR < 3"; then
3711         add_compat msvcrt/snprintf.o
3712         add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3713     else
3714         add_cppflags -D__USE_MINGW_ANSI_STDIO=1
3715     fi
3716 elif check_func_headers stdlib.h _get_doserrno; then
3717     libc_type=msvcrt
3718     add_compat strtod.o strtod=avpriv_strtod
3719     add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3720                                  _snprintf=avpriv_snprintf  \
3721                                  vsnprintf=avpriv_vsnprintf
3722     # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3723     # 0x601 by default unless something else is set by the user.
3724     # This can easily lead to us detecting functions only present
3725     # in such new versions and producing binaries requiring windows 7.0.
3726     # Therefore explicitly set the default to XP unless the user has
3727     # set something else on the command line.
3728     check_cpp_condition stdlib.h "defined(_WIN32_WINNT)" || add_cppflags -D_WIN32_WINNT=0x0502
3729 elif check_cpp_condition stddef.h "defined __KLIBC__"; then
3730     libc_type=klibc
3731 elif check_cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3732     libc_type=bionic
3733     add_compat strtod.o strtod=avpriv_strtod
3734 fi
3735
3736 test -n "$libc_type" && enable $libc_type
3737
3738 # hacks for compiler/libc/os combinations
3739
3740 if enabled_all tms470 glibc; then
3741     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3742     add_cppflags -D__USER_LABEL_PREFIX__=
3743     add_cppflags -D__builtin_memset=memset
3744     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3745     add_cflags   -pds=48    # incompatible redefinition of macro
3746 fi
3747
3748 if enabled_all ccc glibc; then
3749     add_ldflags -Wl,-z,now  # calls to libots crash without this
3750 fi
3751
3752 esc(){
3753     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3754 }
3755
3756 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3757
3758 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3759
3760 set_default $PATHS_LIST
3761 set_default nm
3762
3763 # we need to build at least one lib type
3764 if ! enabled_any static shared; then
3765     cat <<EOF
3766 At least one library type must be built.
3767 Specify --enable-static to build the static libraries or --enable-shared to
3768 build the shared libraries as well. To only build the shared libraries specify
3769 --disable-static in addition to --enable-shared.
3770 EOF
3771     exit 1;
3772 fi
3773
3774 # backward compatibility layer for incompatible_libav/fork_abi
3775 enabled incompatible_fork_abi  && enable incompatible_libav_abi
3776 enabled incompatible_libav_abi && enable incompatible_fork_abi
3777
3778 die_license_disabled() {
3779     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3780 }
3781
3782 die_license_disabled_gpl() {
3783     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3784 }
3785
3786 die_license_disabled gpl frei0r
3787 die_license_disabled gpl libcdio
3788 die_license_disabled gpl libutvideo
3789 die_license_disabled gpl libvidstab
3790 die_license_disabled gpl libx264
3791 die_license_disabled gpl libxavs
3792 die_license_disabled gpl libxvid
3793 die_license_disabled gpl libzvbi
3794 die_license_disabled gpl x11grab
3795
3796 die_license_disabled nonfree libaacplus
3797 die_license_disabled nonfree libfaac
3798 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
3799 enabled gpl && die_license_disabled_gpl nonfree openssl
3800
3801 die_license_disabled version3 libopencore_amrnb
3802 die_license_disabled version3 libopencore_amrwb
3803 die_license_disabled version3 libvo_aacenc
3804 die_license_disabled version3 libvo_amrwbenc
3805
3806 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3807
3808 disabled optimizations || check_cflags -fomit-frame-pointer
3809
3810 enable_weak_pic() {
3811     disabled pic && return
3812     enable pic
3813     add_cppflags -DPIC
3814     case "$target_os" in
3815     mingw*|cygwin*)
3816         ;;
3817     *)
3818         add_cflags -fPIC
3819         ;;
3820     esac
3821     add_asflags  -fPIC
3822 }
3823
3824 enabled pic && enable_weak_pic
3825
3826 check_cc <<EOF || die "Symbol mangling check failed."
3827 int ff_extern;
3828 EOF
3829 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
3830 extern_prefix=${sym%%ff_extern*}
3831
3832 check_cc <<EOF && enable_weak inline_asm
3833 void foo(void) { __asm__ volatile ("" ::); }
3834 EOF
3835
3836 _restrict=
3837 for restrict_keyword in restrict __restrict__ __restrict; do
3838     check_cc <<EOF && _restrict=$restrict_keyword && break
3839 void foo(char * $restrict_keyword p);
3840 EOF
3841 done
3842
3843 check_cc <<EOF && enable pragma_deprecated
3844 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
3845 EOF
3846
3847 check_cc <<EOF && enable attribute_packed
3848 struct { int x; } __attribute__((packed)) x;
3849 EOF
3850
3851 check_cc <<EOF && enable attribute_may_alias
3852 union { int x; } __attribute__((may_alias)) x;
3853 EOF
3854
3855 check_cc <<EOF || die "endian test failed"
3856 unsigned int endian = 'B' << 24 | 'I' << 16 | 'G' << 8 | 'E';
3857 EOF
3858 od -t x1 $TMPO | grep -q '42 *49 *47 *45' && enable bigendian
3859
3860 check_inline_asm inline_asm_labels '"1:\n"'
3861
3862 if enabled alpha; then
3863
3864     check_cflags -mieee
3865
3866 elif enabled arm; then
3867
3868     check_cpp_condition stddef.h "defined __thumb__" && check_cc <<EOF && enable_weak thumb
3869 float func(float a, float b){ return a+b; }
3870 EOF
3871
3872     enabled thumb && check_cflags -mthumb || check_cflags -marm
3873     nogas=die
3874
3875     if     check_cpp_condition stddef.h "defined __ARM_PCS_VFP"; then
3876         enable vfp_args
3877     elif ! check_cpp_condition stddef.h "defined __ARM_PCS || defined __SOFTFP__"; then
3878         case "${cross_prefix:-$cc}" in
3879             *hardfloat*)         enable vfp_args;   fpabi=vfp ;;
3880             *) check_ld "cc" <<EOF && enable vfp_args && fpabi=vfp || fpabi=soft ;;
3881 __asm__ (".eabi_attribute 28, 1");
3882 int main(void) { return 0; }
3883 EOF
3884         esac
3885         warn "Compiler does not indicate floating-point ABI, guessing $fpabi."
3886     fi
3887
3888     enabled armv5te && check_insn armv5te 'qadd r0, r0, r0'
3889     enabled armv6   && check_insn armv6   'sadd16 r0, r0, r0'
3890     enabled armv6t2 && check_insn armv6t2 'movt r0, #0'
3891     enabled neon    && check_insn neon    'vadd.i16 q0, q0, q0'
3892     enabled vfp     && check_insn vfp     'fadds s0, s0, s0'
3893     enabled vfpv3   && check_insn vfpv3   'vmov.f32 s0, #1.0'
3894
3895     [ $target_os = linux ] ||
3896         map 'enabled_any ${v}_external ${v}_inline || disable $v' \
3897             $ARCH_EXT_LIST_ARM
3898
3899     check_inline_asm asm_mod_q '"add r0, %Q0, %R0" :: "r"((long long)0)'
3900     check_inline_asm asm_mod_y '"vmul.i32 d0, d0, %y0" :: "x"(0)'
3901
3902     [ $target_os != win32 ] && enabled_all armv6t2 shared !pic && enable_weak_pic
3903
3904 elif enabled mips; then
3905
3906     check_inline_asm loongson '"dmult.g $1, $2, $3"'
3907     enabled mips32r2  && add_cflags "-mips32r2" && add_asflags "-mips32r2" &&
3908      check_inline_asm mips32r2  '"rotr $t0, $t1, 1"'
3909     enabled mipsdspr1 && add_cflags "-mdsp" && add_asflags "-mdsp" &&
3910      check_inline_asm mipsdspr1 '"addu.qb $t0, $t1, $t2"'
3911     enabled mipsdspr2 && add_cflags "-mdspr2" && add_asflags "-mdspr2" &&
3912      check_inline_asm mipsdspr2 '"absq_s.qb $t0, $t1"'
3913     enabled mipsfpu   && add_cflags "-mhard-float" && add_asflags "-mhard-float" &&
3914      check_inline_asm mipsfpu   '"madd.d $f0, $f2, $f4, $f6"'
3915
3916 elif enabled parisc; then
3917
3918     if enabled gcc; then
3919         case $($cc -dumpversion) in
3920             4.[3-8].*) check_cflags -fno-optimize-sibling-calls ;;
3921         esac
3922     fi
3923
3924 elif enabled ppc; then
3925
3926     enable local_aligned_8 local_aligned_16
3927
3928     check_inline_asm dcbzl     '"dcbzl 0, %0" :: "r"(0)'
3929     check_inline_asm ibm_asm   '"add 0, 0, 0"'
3930     check_inline_asm ppc4xx    '"maclhw r10, r11, r12"'
3931     check_inline_asm xform_asm '"lwzx %1, %y0" :: "Z"(*(int*)0), "r"(0)'
3932
3933     # AltiVec flags: The FSF version of GCC differs from the Apple version
3934     if enabled altivec; then
3935         if ! enabled_any pic ppc64; then
3936             nogas=warn
3937         fi
3938         check_cflags -maltivec -mabi=altivec &&
3939         { check_header altivec.h && inc_altivec_h="#include <altivec.h>" ; } ||
3940         check_cflags -faltivec
3941
3942         # check if our compiler supports Motorola AltiVec C API
3943         check_cc <<EOF || disable altivec
3944 $inc_altivec_h
3945 int main(void) {
3946     vector signed int v1 = (vector signed int) { 0 };
3947     vector signed int v2 = (vector signed int) { 1 };
3948     v1 = vec_add(v1, v2);
3949     return 0;
3950 }
3951 EOF
3952
3953         enabled altivec || warn "Altivec disabled, possibly missing --cpu flag"
3954     fi
3955
3956 elif enabled sparc; then
3957
3958     enabled vis && check_inline_asm vis '"pdist %f0, %f0, %f0"'
3959
3960 elif enabled x86; then
3961
3962     check_builtin rdtsc    intrin.h   "__rdtsc()"
3963     check_builtin mm_empty mmintrin.h "_mm_empty()"
3964
3965     enable local_aligned_8 local_aligned_16
3966
3967     # check whether EBP is available on x86
3968     # As 'i' is stored on the stack, this program will crash
3969     # if the base pointer is used to access it because the
3970     # base pointer is cleared in the inline assembly code.
3971     check_exec_crash <<EOF && enable ebp_available
3972 volatile int i=0;
3973 __asm__ volatile ("xorl %%ebp, %%ebp" ::: "%ebp");
3974 return i;
3975 EOF
3976
3977     # check whether EBX is available on x86
3978     check_inline_asm ebx_available '""::"b"(0)' &&
3979         check_inline_asm ebx_available '"":::"%ebx"'
3980
3981     # check whether xmm clobbers are supported
3982     check_inline_asm xmm_clobbers '"":::"%xmm0"'
3983
3984     # check whether binutils is new enough to compile SSSE3/MMXEXT
3985     enabled ssse3  && check_inline_asm ssse3_inline  '"pabsw %xmm0, %xmm0"'
3986     enabled mmxext && check_inline_asm mmxext_inline '"pmaxub %mm0, %mm1"'
3987
3988     if ! disabled_any asm mmx yasm; then
3989         if check_cmd $yasmexe --version; then
3990             enabled x86_64 && yasm_extra="-m amd64"
3991             yasm_debug="-g dwarf2"
3992         elif check_cmd nasm -v; then
3993             yasmexe=nasm
3994             yasm_debug="-g -F dwarf"
3995             enabled x86_64 && test "$objformat" = elf && objformat=elf64
3996         fi
3997
3998         YASMFLAGS="-f $objformat $yasm_extra"
3999         enabled pic               && append YASMFLAGS "-DPIC"
4000         test -n "$extern_prefix"  && append YASMFLAGS "-DPREFIX"
4001         case "$objformat" in
4002             elf*) enabled debug && append YASMFLAGS $yasm_debug ;;
4003         esac
4004
4005         check_yasm "pextrd [eax], xmm0, 1" && enable yasm ||
4006             die "yasm not found, use --disable-yasm for a crippled build"
4007         check_yasm "vextractf128 xmm0, ymm0, 0"      || disable avx_external avresample
4008         check_yasm "vfmaddps ymm0, ymm1, ymm2, ymm3" || disable fma4_external
4009         check_yasm "CPU amdnop" && enable cpunop
4010     fi
4011
4012     case "$cpu" in
4013         athlon*|opteron*|k8*|pentium|pentium-mmx|prescott|nocona|atom|geode)
4014             disable fast_clz
4015         ;;
4016     esac
4017
4018 fi
4019
4020 if enabled asm; then
4021     as=${gas:=$as}
4022     check_as <<EOF && enable gnu_as || \
4023         $nogas "GNU assembler not found, install gas-preprocessor"
4024 .macro m n
4025 \n: .int 0
4026 .endm
4027 m x
4028 EOF
4029 fi
4030
4031 check_ldflags -Wl,--as-needed
4032
4033 if check_func dlopen; then
4034     ldl=
4035 elif check_func dlopen -ldl; then
4036     ldl=-ldl
4037 fi
4038
4039 if ! disabled network; then
4040     check_type "sys/types.h sys/socket.h" socklen_t
4041     check_type netdb.h "struct addrinfo"
4042     check_type netinet/in.h "struct group_source_req" -D_BSD_SOURCE
4043     check_type netinet/in.h "struct ip_mreq_source" -D_BSD_SOURCE
4044     check_type netinet/in.h "struct ipv6_mreq" -D_DARWIN_C_SOURCE
4045     check_type netinet/in.h "struct sockaddr_in6"
4046     check_type poll.h "struct pollfd"
4047     check_type "sys/types.h sys/socket.h" "struct sockaddr_storage"
4048     check_struct "sys/types.h sys/socket.h" "struct sockaddr" sa_len
4049     check_type netinet/sctp.h "struct sctp_event_subscribe"
4050     check_func getaddrinfo $network_extralibs
4051     check_func getservbyport $network_extralibs
4052     # Prefer arpa/inet.h over winsock2
4053     if check_header arpa/inet.h ; then
4054         check_func closesocket
4055     elif check_header winsock2.h ; then
4056         check_func_headers winsock2.h closesocket -lws2 &&
4057             network_extralibs="-lws2" ||
4058         { check_func_headers winsock2.h closesocket -lws2_32 &&
4059             network_extralibs="-lws2_32"; }
4060         check_func_headers ws2tcpip.h getaddrinfo $network_extralibs
4061         check_type ws2tcpip.h socklen_t
4062         check_type ws2tcpip.h "struct addrinfo"
4063         check_type ws2tcpip.h "struct group_source_req"
4064         check_type ws2tcpip.h "struct ip_mreq_source"
4065         check_type ws2tcpip.h "struct ipv6_mreq"
4066         check_type winsock2.h "struct pollfd"
4067         check_type ws2tcpip.h "struct sockaddr_in6"
4068         check_type ws2tcpip.h "struct sockaddr_storage"
4069         check_struct winsock2.h "struct sockaddr" sa_len
4070     else
4071         disable network
4072     fi
4073 fi
4074
4075 # Solaris has nanosleep in -lrt, OpenSolaris no longer needs that
4076 check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
4077
4078 check_func  access
4079 check_func  clock_gettime || { check_func clock_gettime -lrt && add_extralibs -lrt; }
4080 check_func  fcntl
4081 check_func  fork
4082 check_func_headers stdlib.h getenv
4083 check_func  gethrtime
4084 check_func  getopt
4085 check_func  getrusage
4086 check_struct "sys/time.h sys/resource.h" "struct rusage" ru_maxrss
4087 check_func  gettimeofday
4088 check_func  inet_aton $network_extralibs
4089 check_func  isatty
4090 check_func  localtime_r
4091 check_func  ${malloc_prefix}memalign            && enable memalign
4092 check_func  mkstemp
4093 check_func  mmap
4094 check_func  mprotect
4095 check_func  ${malloc_prefix}posix_memalign      && enable posix_memalign
4096 check_func_headers malloc.h _aligned_malloc     && enable aligned_malloc
4097 check_func  setrlimit
4098 check_struct "sys/stat.h" "struct stat" st_mtim.tv_nsec -D_BSD_SOURCE
4099 check_func  strerror_r
4100 check_func  sched_getaffinity
4101 check_builtin sync_val_compare_and_swap "" "int *ptr; int oldval, newval; __sync_val_compare_and_swap(ptr, oldval, newval)"
4102 check_builtin machine_rw_barrier mbarrier.h "__machine_rw_barrier()"
4103 check_builtin atomic_cas_ptr atomic.h "void **ptr; void *oldval, *newval; atomic_cas_ptr(ptr, oldval, newval)"
4104 check_builtin MemoryBarrier windows.h "MemoryBarrier()"
4105 check_builtin sarestart signal.h "SA_RESTART"
4106 check_func  sysconf
4107 check_func  sysctl
4108 check_func  usleep
4109 check_func_headers conio.h kbhit
4110 check_func_headers windows.h PeekNamedPipe
4111 check_func_headers io.h setmode
4112 check_func_headers lzo/lzo1x.h lzo1x_999_compress
4113 check_lib2 "windows.h shellapi.h" CommandLineToArgvW -lshell32
4114 check_lib2 "windows.h wincrypt.h" CryptGenRandom -ladvapi32
4115 check_lib2 "windows.h psapi.h" GetProcessMemoryInfo -lpsapi
4116 check_func_headers windows.h GetProcessAffinityMask
4117 check_func_headers windows.h GetProcessTimes
4118 check_func_headers windows.h GetSystemTimeAsFileTime
4119 check_func_headers windows.h MapViewOfFile
4120 check_func_headers windows.h SetConsoleTextAttribute
4121 check_func_headers windows.h Sleep
4122 check_func_headers windows.h VirtualAlloc
4123 check_func_headers glob.h glob
4124 check_func_headers "X11/Xlib.h X11/extensions/Xvlib.h" XvGetPortAttribute -lXv -lX11 -lXext
4125
4126 check_header cl/cl.h
4127 check_header direct.h
4128 check_header dlfcn.h
4129 check_header dxva.h
4130 check_header dxva2api.h -D_WIN32_WINNT=0x0600
4131 check_header io.h
4132 check_header libcrystalhd/libcrystalhd_if.h
4133 check_header malloc.h
4134 check_header poll.h
4135 check_header sys/mman.h
4136 check_header sys/param.h
4137 check_header sys/resource.h
4138 check_header sys/select.h
4139 check_header sys/time.h
4140 check_header sys/un.h
4141 check_header termios.h
4142 check_header unistd.h
4143 check_header vdpau/vdpau.h
4144 check_header vdpau/vdpau_x11.h
4145 check_header VideoDecodeAcceleration/VDADecoder.h
4146 check_header windows.h
4147 check_header X11/extensions/XvMClib.h
4148 check_header asm/types.h
4149
4150 disabled  zlib || check_lib   zlib.h      zlibVersion -lz   || disable  zlib
4151 disabled bzlib || check_lib2 bzlib.h BZ2_bzlibVersion -lbz2 || disable bzlib
4152
4153 if ! disabled w32threads && ! enabled pthreads; then
4154     check_func_headers "windows.h process.h" _beginthreadex && enable w32threads
4155 fi
4156
4157 # check for some common methods of building with pthread support
4158 # do this before the optional library checks as some of them require pthreads
4159 if ! disabled pthreads && ! enabled w32threads && ! enabled os2threads; then
4160     enable pthreads
4161     if check_func pthread_create; then
4162         :
4163     elif check_func pthread_create -pthread; then
4164         add_cflags -pthread
4165         add_extralibs -pthread
4166     elif check_func pthread_create -pthreads; then
4167         add_cflags -pthreads
4168         add_extralibs -pthreads
4169     elif check_func pthread_create -lpthreadGC2; then
4170         add_extralibs -lpthreadGC2
4171     elif ! check_lib pthread.h pthread_create -lpthread; then
4172         disable pthreads
4173     fi
4174 fi
4175
4176 for thread in $THREADS_LIST; do
4177     if enabled $thread; then
4178         test -n "$thread_type" &&
4179             die "ERROR: Only one thread type must be selected." ||
4180             thread_type="$thread"
4181     fi
4182 done
4183
4184 if enabled pthreads; then
4185   check_func pthread_cancel
4186 fi
4187
4188 enabled sync_val_compare_and_swap && enable atomics_gcc
4189 enabled_all atomic_cas_ptr machine_rw_barrier && enable atomics_suncc
4190 enabled MemoryBarrier && enable atomics_win32
4191
4192 check_lib math.h sin -lm && LIBM="-lm"
4193 disabled crystalhd || check_lib libcrystalhd/libcrystalhd_if.h DtsCrystalHDVersion -lcrystalhd || disable crystalhd
4194
4195 atan2f_args=2
4196 ldexpf_args=2
4197 powf_args=2
4198
4199 for func in $MATH_FUNCS; do
4200     eval check_mathfunc $func \${${func}_args:-1}
4201 done
4202
4203 # these are off by default, so fail if requested and not available
4204 enabled avisynth          && { { check_lib2 "windows.h" LoadLibrary; } ||
4205                                { check_lib2 "dlfcn.h" dlopen -ldl; } ||
4206                                die "ERROR: LoadLibrary/dlopen not found for avisynth"; }
4207 enabled fontconfig        && require_pkg_config fontconfig "fontconfig/fontconfig.h" FcInit
4208 enabled frei0r            && { check_header frei0r.h || die "ERROR: frei0r.h header not found"; }
4209 enabled gnutls            && require_pkg_config gnutls gnutls/gnutls.h gnutls_global_init
4210 enabled libiec61883       && require libiec61883 libiec61883/iec61883.h iec61883_cmp_connect -lraw1394 -lavc1394 -lrom1394 -liec61883
4211 enabled libaacplus        && require "libaacplus >= 2.0.0" aacplus.h aacplusEncOpen -laacplus
4212 enabled libass            && require_pkg_config libass ass/ass.h ass_library_init
4213 enabled libbluray         && require libbluray libbluray/bluray.h bd_open -lbluray
4214 enabled libcelt           && require libcelt celt/celt.h celt_decode -lcelt0 &&
4215                              { check_lib celt/celt.h celt_decoder_create_custom -lcelt0 ||
4216                                die "ERROR: libcelt must be installed and version must be >= 0.11.0."; }
4217 enabled libcaca           && require_pkg_config caca caca.h caca_create_canvas
4218 enabled libfaac           && require2 libfaac "stdint.h faac.h" faacEncGetVersion -lfaac
4219 enabled libfdk_aac        && require libfdk_aac fdk-aac/aacenc_lib.h aacEncOpen -lfdk-aac
4220 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"
4221 enabled libflite          && require2 libflite "flite/flite.h" flite_init $flite_libs
4222 enabled libfreetype       && require_pkg_config freetype2 "ft2build.h freetype/freetype.h" FT_Init_FreeType
4223 enabled libgme            && require  libgme gme/gme.h gme_new_emu -lgme -lstdc++
4224 enabled libgsm            && { for gsm_hdr in "gsm.h" "gsm/gsm.h"; do
4225                                    check_lib "${gsm_hdr}" gsm_create -lgsm && break;
4226                                done || die "ERROR: libgsm not found"; }
4227 enabled libilbc           && require libilbc ilbc.h WebRtcIlbcfix_InitDecode -lilbc
4228 enabled libmodplug        && require libmodplug libmodplug/modplug.h ModPlug_Load -lmodplug
4229 enabled libmp3lame        && require "libmp3lame >= 3.98.3" lame/lame.h lame_set_VBR_quality -lmp3lame
4230 enabled libnut            && require libnut libnut.h nut_demuxer_init -lnut
4231 enabled libopencore_amrnb && require libopencore_amrnb opencore-amrnb/interf_dec.h Decoder_Interface_init -lopencore-amrnb
4232 enabled libopencore_amrwb && require libopencore_amrwb opencore-amrwb/dec_if.h D_IF_init -lopencore-amrwb
4233 enabled libopencv         && require_pkg_config opencv opencv/cxcore.h cvCreateImageHeader
4234 enabled libopenjpeg       && { check_lib openjpeg-1.5/openjpeg.h opj_version -lopenjpeg ||
4235                                check_lib openjpeg.h opj_version -lopenjpeg ||
4236                                die "ERROR: libopenjpeg not found"; }
4237 enabled libopus           && require_pkg_config opus opus_multistream.h opus_multistream_decoder_create
4238 enabled libpulse          && require_pkg_config libpulse-simple pulse/simple.h pa_simple_new
4239 enabled libquvi           && require_pkg_config libquvi quvi/quvi.h quvi_init
4240 enabled librtmp           && require_pkg_config librtmp librtmp/rtmp.h RTMP_Socket
4241 enabled libschroedinger   && require_pkg_config schroedinger-1.0 schroedinger/schro.h schro_init
4242 enabled libshine          && require_pkg_config shine shine/layer3.h shine_encode_buffer
4243 enabled libsoxr           && require libsoxr soxr.h soxr_create -lsoxr
4244 enabled libspeex          && require libspeex speex/speex.h speex_decoder_init -lspeex
4245 enabled libstagefright_h264 && require_cpp libstagefright_h264 "binder/ProcessState.h media/stagefright/MetaData.h
4246     media/stagefright/MediaBufferGroup.h media/stagefright/MediaDebug.h media/stagefright/MediaDefs.h
4247     media/stagefright/OMXClient.h media/stagefright/OMXCodec.h" android::OMXClient -lstagefright -lmedia -lutils -lbinder -lgnustl_static
4248 enabled libtheora         && require libtheora theora/theoraenc.h th_info_init -ltheoraenc -ltheoradec -logg
4249 enabled libtwolame        && require libtwolame twolame.h twolame_init -ltwolame &&
4250                              { check_lib twolame.h twolame_encode_buffer_float32_interleaved -ltwolame ||
4251                                die "ERROR: libtwolame must be installed and version must be >= 0.3.10"; }
4252 enabled libutvideo        && require_cpp utvideo "stdint.h stdlib.h utvideo/utvideo.h utvideo/Codec.h" 'CCodec*' -lutvideo -lstdc++
4253 enabled libv4l2           && require_pkg_config libv4l2 libv4l2.h v4l2_ioctl
4254 enabled libvidstab        && require_pkg_config vidstab vid.stab/libvidstab.h vsMotionDetectInit
4255 enabled libvo_aacenc      && require libvo_aacenc vo-aacenc/voAAC.h voGetAACEncAPI -lvo-aacenc
4256 enabled libvo_amrwbenc    && require libvo_amrwbenc vo-amrwbenc/enc_if.h E_IF_init -lvo-amrwbenc
4257 enabled libvorbis         && require libvorbis vorbis/vorbisenc.h vorbis_info_init -lvorbisenc -lvorbis -logg
4258 enabled libvpx            && {
4259     enabled libvpx_vp8_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" vpx_codec_dec_init_ver -lvpx ||
4260                                     die "ERROR: libvpx decoder version must be >=0.9.1"; }
4261     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 ||
4262                                     die "ERROR: libvpx encoder version must be >=0.9.7"; }
4263     enabled libvpx_vp9_decoder && { check_lib2 "vpx/vpx_decoder.h vpx/vp8dx.h" "vpx_codec_vp9_dx" -lvpx || disable libvpx_vp9_decoder; }
4264     enabled libvpx_vp9_encoder && { check_lib2 "vpx/vpx_encoder.h vpx/vp8cx.h" "vpx_codec_vp9_cx" -lvpx || disable libvpx_vp9_encoder; } }
4265 enabled libwavpack        && require libwavpack wavpack/wavpack.h WavpackOpenFileOutput  -lwavpack
4266 enabled libx264           && require libx264 x264.h x264_encoder_encode -lx264 &&
4267                              { check_cpp_condition x264.h "X264_BUILD >= 118" ||
4268                                die "ERROR: libx264 must be installed and version must be >= 0.118."; }
4269 enabled libxavs           && require libxavs xavs.h xavs_encoder_encode -lxavs
4270 enabled libxvid           && require libxvid xvid.h xvid_global -lxvidcore
4271 enabled libzmq            && require_pkg_config libzmq zmq.h zmq_ctx_new
4272 enabled libzvbi           && require libzvbi libzvbi.h vbi_decoder_new -lzvbi
4273 enabled openal            && { { for al_libs in "${OPENAL_LIBS}" "-lopenal" "-lOpenAL32"; do
4274                                check_lib 'AL/al.h' alGetError "${al_libs}" && break; done } ||
4275                                die "ERROR: openal not found"; } &&
4276                              { check_cpp_condition "AL/al.h" "defined(AL_VERSION_1_1)" ||
4277                                die "ERROR: openal must be installed and version must be 1.1 or compatible"; }
4278 enabled opencl            && { check_lib2 OpenCL/cl.h clEnqueueNDRangeKernel -Wl,-framework,OpenCL ||
4279                                check_lib2 CL/cl.h clEnqueueNDRangeKernel -lOpenCL ||
4280                                die "ERROR: opencl not found"; } &&
4281                              { enabled_any w32threads os2threads &&
4282                                die "opencl currently needs --enable-pthreads or --disable-w32threads"; } &&
4283                              { check_cpp_condition "OpenCL/cl.h" "defined(CL_VERSION_1_2)" ||
4284                                check_cpp_condition "CL/cl.h" "defined(CL_VERSION_1_2)" ||
4285                                die "ERROR: opencl must be installed and version must be 1.2 or compatible"; }
4286 enabled openssl           && { check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto ||
4287                                check_lib openssl/ssl.h SSL_library_init -lssl32 -leay32 ||
4288                                check_lib openssl/ssl.h SSL_library_init -lssl -lcrypto -lws2_32 -lgdi32 ||
4289                                die "ERROR: openssl not found"; }
4290
4291 if enabled gnutls; then
4292     { check_lib nettle/bignum.h nettle_mpz_get_str_256 -lnettle -lhogweed -lgmp && enable nettle; } ||
4293     { check_lib gcrypt.h gcry_mpi_new -lgcrypt && enable gcrypt; }
4294 fi
4295
4296 # libdc1394 check
4297 if enabled libdc1394; then
4298     { check_lib dc1394/dc1394.h dc1394_new -ldc1394 -lraw1394 &&
4299         enable libdc1394_2; } ||
4300     { check_lib libdc1394/dc1394_control.h dc1394_create_handle -ldc1394_control -lraw1394 &&
4301         enable libdc1394_1; } ||
4302     die "ERROR: No version of libdc1394 found "
4303 fi
4304
4305 SDL_CONFIG="${cross_prefix}sdl-config"
4306 if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
4307     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4308     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4309     enable sdl
4310 else
4311   if "${SDL_CONFIG}" --version > /dev/null 2>&1; then
4312     sdl_cflags=$("${SDL_CONFIG}" --cflags)
4313     sdl_libs=$("${SDL_CONFIG}" --libs)
4314     check_func_headers SDL_version.h SDL_Linked_Version $sdl_cflags $sdl_libs &&
4315     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
4316     check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) < 0x010300" $sdl_cflags &&
4317     enable sdl
4318   fi
4319 fi
4320 enabled sdl && add_cflags $sdl_cflags && add_extralibs $sdl_libs
4321
4322 texi2html --help 2> /dev/null | grep -q 'init-file' && enable texi2html || disable texi2html
4323 makeinfo --version > /dev/null 2>&1 && enable makeinfo  || disable makeinfo
4324 perl --version > /dev/null 2>&1 && enable perl || disable perl
4325 pod2man --help > /dev/null 2>&1 && enable pod2man || disable pod2man
4326 rsync --help 2> /dev/null | grep -q 'contimeout' && enable rsync_contimeout || disable rsync_contimeout
4327
4328 check_header linux/fb.h
4329 check_header linux/videodev.h
4330 check_header linux/videodev2.h
4331 check_code cc linux/videodev2.h "struct v4l2_frmsizeenum vfse; vfse.discrete.width = 0;" && enable_safe struct_v4l2_frmivalenum_discrete
4332
4333 check_header sys/videoio.h
4334
4335 check_func_headers "windows.h vfw.h" capCreateCaptureWindow "$vfwcap_indev_extralibs"
4336 # check that WM_CAP_DRIVER_CONNECT is defined to the proper value
4337 # w32api 3.12 had it defined wrong
4338 check_cpp_condition vfw.h "WM_CAP_DRIVER_CONNECT > WM_USER" && enable vfwcap_defines
4339
4340 check_type "dshow.h" IBaseFilter
4341
4342 # check for ioctl_meteor.h, ioctl_bt848.h and alternatives
4343 { check_header dev/bktr/ioctl_meteor.h &&
4344   check_header dev/bktr/ioctl_bt848.h; } ||
4345 { check_header machine/ioctl_meteor.h &&
4346   check_header machine/ioctl_bt848.h; } ||
4347 { check_header dev/video/meteor/ioctl_meteor.h &&
4348   check_header dev/video/bktr/ioctl_bt848.h; } ||
4349 check_header dev/ic/bt8xx.h
4350
4351 check_header sndio.h
4352 if check_struct sys/soundcard.h audio_buf_info bytes; then
4353     enable_safe sys/soundcard.h
4354 else
4355     check_cc -D__BSD_VISIBLE -D__XSI_VISIBLE <<EOF && add_cppflags -D__BSD_VISIBLE -D__XSI_VISIBLE && enable_safe sys/soundcard.h
4356     #include <sys/soundcard.h>
4357     audio_buf_info abc;
4358 EOF
4359 fi
4360 check_header soundcard.h
4361
4362 enabled_any alsa_indev alsa_outdev &&
4363     check_lib2 alsa/asoundlib.h snd_pcm_htimestamp -lasound
4364
4365 enabled jack_indev && check_lib2 jack/jack.h jack_client_open -ljack && check_func sem_timedwait &&
4366     check_func jack_port_get_latency_range -ljack
4367
4368 enabled_any sndio_indev sndio_outdev && check_lib2 sndio.h sio_open -lsndio
4369
4370 if enabled libcdio; then
4371     check_lib2 "cdio/cdda.h cdio/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4372     check_lib2 "cdio/paranoia/cdda.h cdio/paranoia/paranoia.h" cdio_cddap_open -lcdio_paranoia -lcdio_cdda -lcdio ||
4373     die "ERROR: libcdio-paranoia not found"
4374 fi
4375
4376 enabled x11grab                                           &&
4377 require X11 X11/Xlib.h XOpenDisplay -lX11                 &&
4378 require Xext X11/extensions/XShm.h XShmCreateImage -lXext &&
4379 require Xfixes X11/extensions/Xfixes.h XFixesGetCursorImage -lXfixes
4380
4381 enabled vaapi &&
4382     check_lib va/va.h vaInitialize -lva ||
4383     disable vaapi
4384
4385 enabled vdpau &&
4386     check_cpp_condition vdpau/vdpau.h "defined VDP_DECODER_PROFILE_MPEG4_PART2_ASP" ||
4387     disable vdpau
4388
4389 # Funny iconv installations are not unusual, so check it after all flags have been set
4390 disabled iconv || check_func_headers iconv.h iconv || check_lib2 iconv.h iconv -liconv || disable iconv
4391
4392 enabled debug && add_cflags -g"$debuglevel" && add_asflags -g"$debuglevel"
4393
4394 # add some useful compiler flags if supported
4395 check_cflags -Wdeclaration-after-statement
4396 check_cflags -Wall
4397 check_cflags -Wno-parentheses
4398 check_cflags -Wno-switch
4399 check_cflags -Wno-format-zero-length
4400 check_cflags -Wdisabled-optimization
4401 check_cflags -Wpointer-arith
4402 check_cflags -Wredundant-decls
4403 check_cflags -Wno-pointer-sign
4404 check_cflags -Wwrite-strings
4405 check_cflags -Wtype-limits
4406 check_cflags -Wundef
4407 check_cflags -Wmissing-prototypes
4408 check_cflags -Wno-pointer-to-int-cast
4409 check_cflags -Wstrict-prototypes
4410 enabled extra_warnings && check_cflags -Winline
4411
4412 # add some linker flags
4413 check_ldflags -Wl,--warn-common
4414 check_ldflags -Wl,-rpath-link=libpostproc:libswresample:libswscale:libavfilter:libavdevice:libavformat:libavcodec:libavutil:libavresample
4415 test_ldflags -Wl,-Bsymbolic && append SHFLAGS -Wl,-Bsymbolic
4416
4417 enabled xmm_clobber_test &&
4418     check_ldflags -Wl,--wrap,avcodec_open2              \
4419                   -Wl,--wrap,avcodec_decode_audio4      \
4420                   -Wl,--wrap,avcodec_decode_video2      \
4421                   -Wl,--wrap,avcodec_decode_subtitle2   \
4422                   -Wl,--wrap,avcodec_encode_audio2      \
4423                   -Wl,--wrap,avcodec_encode_video2      \
4424                   -Wl,--wrap,avcodec_encode_subtitle    \
4425                   -Wl,--wrap,sws_scale ||
4426     disable xmm_clobber_test
4427
4428 echo "X{};" > $TMPV
4429 if test_ldflags -Wl,--version-script,$TMPV; then
4430     append SHFLAGS '-Wl,--version-script,\$(SUBDIR)lib\$(NAME).ver'
4431     check_cc <<EOF && enable symver_asm_label
4432 void ff_foo(void) __asm__ ("av_foo@VERSION");
4433 void ff_foo(void) { ${inline_asm+__asm__($quotes);} }
4434 EOF
4435     check_cc <<EOF && enable symver_gnu_asm
4436 __asm__(".symver ff_foo,av_foo@VERSION");
4437 void ff_foo(void) {}
4438 EOF
4439 fi
4440
4441 if [ -z "$optflags" ]; then
4442     if enabled small; then
4443         optflags=$cflags_size
4444     elif enabled optimizations; then
4445         optflags=$cflags_speed
4446     else
4447         optflags=$cflags_noopt
4448     fi
4449 fi
4450
4451 check_optflags(){
4452     check_cflags "$@"
4453     enabled lto && check_ldflags "$@"
4454 }
4455
4456
4457 if enabled lto; then
4458     test "$cc_type" != "$ld_type" && die "LTO requires same compiler and linker"
4459     check_cflags  -flto
4460     check_ldflags -flto $cpuflags
4461 fi
4462
4463 check_optflags $optflags
4464 check_optflags -fno-math-errno
4465 check_optflags -fno-signed-zeros
4466
4467 enabled ftrapv && check_cflags -ftrapv
4468
4469 check_cc -mno-red-zone <<EOF && noredzone_flags="-mno-red-zone"
4470 int x;
4471 EOF
4472
4473
4474 if enabled icc; then
4475     # Just warnings, no remarks
4476     check_cflags -w1
4477     # -wd: Disable following warnings
4478     # 144, 167, 556: -Wno-pointer-sign
4479     # 188: enumerated type mixed with another type
4480     # 1292: attribute "foo" ignored
4481     # 1419: external declaration in primary source file
4482     # 10006: ignoring unknown option -fno-signed-zeros
4483     # 10148: ignoring unknown option -Wno-parentheses
4484     # 10156: ignoring option '-W'; no argument required
4485     check_cflags -wd144,167,188,556,1292,1419,10006,10148,10156
4486     # 11030: Warning unknown option --as-needed
4487     # 10156: ignoring option '-export'; no argument required
4488     check_ldflags -wd10156,11030
4489     # icc 11.0 and 11.1 work with ebp_available, but don't pass the test
4490     enable ebp_available
4491     if enabled x86_32; then
4492         icc_version=$($cc -dumpversion)
4493         test ${icc_version%%.*} -ge 11 &&
4494             check_cflags -falign-stack=maintain-16-byte ||
4495             disable aligned_stack
4496     fi
4497 elif enabled ccc; then
4498     # disable some annoying warnings
4499     add_cflags -msg_disable bitnotint
4500     add_cflags -msg_disable mixfuncvoid
4501     add_cflags -msg_disable nonstandcast
4502     add_cflags -msg_disable unsupieee
4503 elif enabled gcc; then
4504     check_optflags -fno-tree-vectorize
4505     check_cflags -Werror=implicit-function-declaration
4506     check_cflags -Werror=missing-prototypes
4507     check_cflags -Werror=return-type
4508     check_cflags -Werror=vla
4509 elif enabled llvm_gcc; then
4510     check_cflags -mllvm -stack-alignment=16
4511 elif enabled clang; then
4512     check_cflags -mllvm -stack-alignment=16
4513     check_cflags -Qunused-arguments
4514     check_cflags -Werror=implicit-function-declaration
4515     check_cflags -Werror=missing-prototypes
4516     check_cflags -Werror=return-type
4517 elif enabled cparser; then
4518     add_cflags -Wno-missing-variable-declarations
4519     add_cflags -Wno-empty-statement
4520 elif enabled armcc; then
4521     # 2523: use of inline assembler is deprecated
4522     add_cflags -W${armcc_opt},--diag_suppress=2523
4523     add_cflags -W${armcc_opt},--diag_suppress=1207
4524     add_cflags -W${armcc_opt},--diag_suppress=1293 # assignment in condition
4525     add_cflags -W${armcc_opt},--diag_suppress=3343 # hardfp compat
4526     add_cflags -W${armcc_opt},--diag_suppress=167  # pointer sign
4527     add_cflags -W${armcc_opt},--diag_suppress=513  # pointer sign
4528 elif enabled tms470; then
4529     add_cflags -pds=824 -pds=837
4530 elif enabled pathscale; then
4531     add_cflags -fstrict-overflow -OPT:wrap_around_unsafe_opt=OFF
4532 elif enabled_any msvc icl; then
4533     enabled x86_32 && disable aligned_stack
4534     enabled_all x86_32 debug && add_cflags -Oy-
4535     enabled debug && add_ldflags -debug
4536     if enabled icl; then
4537         # basically -fstrict-aliasing that does not work (correctly) on icl 13.x
4538         check_cpp_condition "windows.h" "__ICL < 1300" && add_cflags -Qansi-alias
4539         # icl will pass the inline asm tests but inline asm is currently
4540         # not supported (build will fail)
4541         disable inline_asm
4542     fi
4543 fi
4544
4545 case $target_os in
4546     osf1)
4547         enabled ccc && add_ldflags '-Wl,-expect_unresolved,*'
4548     ;;
4549     plan9)
4550         add_cppflags -Dmain=plan9_main
4551     ;;
4552 esac
4553
4554 enable frame_thread_encoder
4555 enabled_any $THREADS_LIST      && enable threads
4556 enabled_any $ATOMICS_LIST      && enable atomics_native
4557
4558 enabled asm || { arch=c; disable $ARCH_LIST $ARCH_EXT_LIST; }
4559
4560 check_deps $CONFIG_LIST       \
4561            $CONFIG_EXTRA      \
4562            $HAVE_LIST         \
4563            $ALL_COMPONENTS    \
4564
4565
4566 if test $target_os = "haiku"; then
4567     disable memalign
4568     disable posix_memalign
4569 fi
4570
4571 ! enabled_any memalign posix_memalign aligned_malloc &&
4572     enabled_any $need_memalign && enable memalign_hack
4573
4574 # add_dep lib dep
4575 # -> enable ${lib}_deps_${dep}
4576 # -> add $dep to ${lib}_deps only once
4577 add_dep() {
4578     lib=$1
4579     dep=$2
4580     enabled "${lib}_deps_${dep}" && return 0
4581     enable  "${lib}_deps_${dep}"
4582     prepend "${lib}_deps" $dep
4583 }
4584
4585 # merge deps lib components
4586 # merge all ${component}_deps into ${lib}_deps and ${lib}_deps_*
4587 merge_deps() {
4588     lib=$1
4589     shift
4590     for comp in $*; do
4591         enabled $comp || continue
4592         eval "dep=\"\$${comp}_deps\""
4593         for d in $dep; do
4594             add_dep $lib $d
4595         done
4596     done
4597 }
4598
4599 merge_deps libavfilter $FILTER_LIST
4600
4601 echo "install prefix            $prefix"
4602 echo "source path               $source_path"
4603 echo "C compiler                $cc"
4604 echo "ARCH                      $arch ($cpu)"
4605 if test "$build_suffix" != ""; then
4606     echo "build suffix              $build_suffix"
4607 fi
4608 if test "$progs_suffix" != ""; then
4609     echo "progs suffix              $progs_suffix"
4610 fi
4611 if test "$extra_version" != ""; then
4612     echo "version string suffix     $extra_version"
4613 fi
4614 echo "big-endian                ${bigendian-no}"
4615 echo "runtime cpu detection     ${runtime_cpudetect-no}"
4616 if enabled x86; then
4617     echo "${yasmexe}                      ${yasm-no}"
4618     echo "MMX enabled               ${mmx-no}"
4619     echo "MMXEXT enabled            ${mmxext-no}"
4620     echo "3DNow! enabled            ${amd3dnow-no}"
4621     echo "3DNow! extended enabled   ${amd3dnowext-no}"
4622     echo "SSE enabled               ${sse-no}"
4623     echo "SSSE3 enabled             ${ssse3-no}"
4624     echo "AVX enabled               ${avx-no}"
4625     echo "FMA4 enabled              ${fma4-no}"
4626     echo "i686 features enabled     ${i686-no}"
4627     echo "CMOV is fast              ${fast_cmov-no}"
4628     echo "EBX available             ${ebx_available-no}"
4629     echo "EBP available             ${ebp_available-no}"
4630 fi
4631 if enabled arm; then
4632     echo "ARMv5TE enabled           ${armv5te-no}"
4633     echo "ARMv6 enabled             ${armv6-no}"
4634     echo "ARMv6T2 enabled           ${armv6t2-no}"
4635     echo "VFP enabled               ${vfp-no}"
4636     echo "NEON enabled              ${neon-no}"
4637     echo "THUMB enabled             ${thumb-no}"
4638 fi
4639 if enabled mips; then
4640     echo "MIPS FPU enabled          ${mipsfpu-no}"
4641     echo "MIPS32R2 enabled          ${mips32r2-no}"
4642     echo "MIPS DSP R1 enabled       ${mipsdspr1-no}"
4643     echo "MIPS DSP R2 enabled       ${mipsdspr2-no}"
4644 fi
4645 if enabled ppc; then
4646     echo "AltiVec enabled           ${altivec-no}"
4647     echo "PPC 4xx optimizations     ${ppc4xx-no}"
4648     echo "dcbzl available           ${dcbzl-no}"
4649 fi
4650 if enabled sparc; then
4651     echo "VIS enabled               ${vis-no}"
4652 fi
4653 echo "debug symbols             ${debug-no}"
4654 echo "strip symbols             ${stripping-no}"
4655 echo "optimize for size         ${small-no}"
4656 echo "optimizations             ${optimizations-no}"
4657 echo "static                    ${static-no}"
4658 echo "shared                    ${shared-no}"
4659 echo "postprocessing support    ${postproc-no}"
4660 echo "new filter support        ${avfilter-no}"
4661 echo "network support           ${network-no}"
4662 echo "threading support         ${thread_type-no}"
4663 echo "safe bitstream reader     ${safe_bitstream_reader-no}"
4664 echo "SDL support               ${sdl-no}"
4665 echo "opencl enabled            ${opencl-no}"
4666 echo "libzvbi enabled           ${libzvbi-no}"
4667 echo "texi2html enabled         ${texi2html-no}"
4668 echo "perl enabled              ${perl-no}"
4669 echo "pod2man enabled           ${pod2man-no}"
4670 echo "makeinfo enabled          ${makeinfo-no}"
4671 test -n "$random_seed" &&
4672     echo "random seed               ${random_seed}"
4673 echo
4674
4675 echo "External libraries:"
4676 print_enabled '' $EXTERNAL_LIBRARY_LIST | print_3_columns
4677 echo
4678
4679 for type in decoder encoder hwaccel parser demuxer muxer protocol filter bsf indev outdev; do
4680     echo "Enabled ${type}s:"
4681     eval list=\$$(toupper $type)_LIST
4682     print_enabled '_*' $list | print_3_columns
4683     echo
4684 done
4685
4686 license="LGPL version 2.1 or later"
4687 if enabled nonfree; then
4688     license="nonfree and unredistributable"
4689 elif enabled gplv3; then
4690     license="GPL version 3 or later"
4691 elif enabled lgplv3; then
4692     license="LGPL version 3 or later"
4693 elif enabled gpl; then
4694     license="GPL version 2 or later"
4695 fi
4696
4697 echo "License: $license"
4698
4699 echo "Creating config.mak, config.h, and doc/config.texi..."
4700
4701 test -e Makefile || $ln_s "$source_path/Makefile" .
4702
4703 enabled stripping || strip="echo skipping strip"
4704
4705 config_files="$TMPH config.mak doc/config.texi"
4706
4707 cat > config.mak <<EOF
4708 # Automatically generated by configure - do not modify!
4709 ifndef FFMPEG_CONFIG_MAK
4710 FFMPEG_CONFIG_MAK=1
4711 FFMPEG_CONFIGURATION=$FFMPEG_CONFIGURATION
4712 prefix=$prefix
4713 LIBDIR=\$(DESTDIR)$libdir
4714 SHLIBDIR=\$(DESTDIR)$shlibdir
4715 INCDIR=\$(DESTDIR)$incdir
4716 BINDIR=\$(DESTDIR)$bindir
4717 DATADIR=\$(DESTDIR)$datadir
4718 DOCDIR=\$(DESTDIR)$docdir
4719 MANDIR=\$(DESTDIR)$mandir
4720 SRC_PATH=$source_path
4721 ifndef MAIN_MAKEFILE
4722 SRC_PATH:=\$(SRC_PATH:.%=..%)
4723 endif
4724 CC_IDENT=$cc_ident
4725 ARCH=$arch
4726 CC=$cc
4727 CXX=$cxx
4728 AS=$as
4729 LD=$ld
4730 DEPCC=$dep_cc
4731 DEPCCFLAGS=$DEPCCFLAGS \$(CPPFLAGS)
4732 DEPAS=$as
4733 DEPASFLAGS=$DEPASFLAGS \$(CPPFLAGS)
4734 YASM=$yasmexe
4735 DEPYASM=$yasmexe
4736 AR=$ar
4737 ARFLAGS=$arflags
4738 AR_O=$ar_o
4739 RANLIB=$ranlib
4740 CP=cp -p
4741 LN_S=$ln_s
4742 STRIP=$strip
4743 CPPFLAGS=$CPPFLAGS
4744 CFLAGS=$CFLAGS
4745 CXXFLAGS=$CXXFLAGS
4746 ASFLAGS=$ASFLAGS
4747 AS_C=$AS_C
4748 AS_O=$AS_O
4749 CC_C=$CC_C
4750 CC_E=$CC_E
4751 CC_O=$CC_O
4752 CXX_C=$CXX_C
4753 CXX_O=$CXX_O
4754 LD_O=$LD_O
4755 LD_LIB=$LD_LIB
4756 LD_PATH=$LD_PATH
4757 DLLTOOL=$dlltool
4758 LDFLAGS=$LDFLAGS
4759 SHFLAGS=$(echo $($ldflags_filter $SHFLAGS))
4760 YASMFLAGS=$YASMFLAGS
4761 BUILDSUF=$build_suffix
4762 PROGSSUF=$progs_suffix
4763 FULLNAME=$FULLNAME
4764 LIBPREF=$LIBPREF
4765 LIBSUF=$LIBSUF
4766 LIBNAME=$LIBNAME
4767 SLIBPREF=$SLIBPREF
4768 SLIBSUF=$SLIBSUF
4769 EXESUF=$EXESUF
4770 EXTRA_VERSION=$extra_version
4771 CCDEP=$CCDEP
4772 CXXDEP=$CXXDEP
4773 CCDEP_FLAGS=$CCDEP_FLAGS
4774 ASDEP=$ASDEP
4775 ASDEP_FLAGS=$ASDEP_FLAGS
4776 CC_DEPFLAGS=$CC_DEPFLAGS
4777 AS_DEPFLAGS=$AS_DEPFLAGS
4778 HOSTCC=$host_cc
4779 HOSTLD=$host_ld
4780 HOSTCFLAGS=$host_cflags
4781 HOSTCPPFLAGS=$host_cppflags
4782 HOSTEXESUF=$HOSTEXESUF
4783 HOSTLDFLAGS=$host_ldflags
4784 HOSTLIBS=$host_libs
4785 DEPHOSTCC=$host_cc
4786 DEPHOSTCCFLAGS=$DEPHOSTCCFLAGS \$(HOSTCCFLAGS)
4787 HOSTCCDEP=$HOSTCCDEP
4788 HOSTCCDEP_FLAGS=$HOSTCCDEP_FLAGS
4789 HOSTCC_DEPFLAGS=$HOSTCC_DEPFLAGS
4790 HOSTCC_C=$HOSTCC_C
4791 HOSTCC_O=$HOSTCC_O
4792 HOSTLD_O=$HOSTLD_O
4793 TARGET_EXEC=$target_exec $target_exec_args
4794 TARGET_PATH=$target_path
4795 TARGET_SAMPLES=${target_samples:-\$(SAMPLES)}
4796 LIBS-ffplay=$sdl_libs
4797 CFLAGS-ffplay=$sdl_cflags
4798 ZLIB=$($ldflags_filter -lz)
4799 LIB_INSTALL_EXTRA_CMD=$LIB_INSTALL_EXTRA_CMD
4800 EXTRALIBS=$extralibs
4801 COMPAT_OBJS=$compat_objs
4802 EXEOBJS=$exeobjs
4803 INSTALL=$install
4804 LIBTARGET=${LIBTARGET}
4805 SLIBNAME=${SLIBNAME}
4806 SLIBNAME_WITH_VERSION=${SLIBNAME_WITH_VERSION}
4807 SLIBNAME_WITH_MAJOR=${SLIBNAME_WITH_MAJOR}
4808 SLIB_CREATE_DEF_CMD=${SLIB_CREATE_DEF_CMD}
4809 SLIB_EXTRA_CMD=${SLIB_EXTRA_CMD}
4810 SLIB_INSTALL_NAME=${SLIB_INSTALL_NAME}
4811 SLIB_INSTALL_LINKS=${SLIB_INSTALL_LINKS}
4812 SLIB_INSTALL_EXTRA_LIB=${SLIB_INSTALL_EXTRA_LIB}
4813 SLIB_INSTALL_EXTRA_SHLIB=${SLIB_INSTALL_EXTRA_SHLIB}
4814 SAMPLES:=${samples:-\$(FATE_SAMPLES)}
4815 NOREDZONE_FLAGS=$noredzone_flags
4816 EOF
4817
4818 get_version(){
4819     lcname=lib${1}
4820     name=$(toupper $lcname)
4821     file=$source_path/$lcname/version.h
4822     eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
4823     eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
4824     eval echo "${lcname}_VERSION=\$${name}_VERSION" >> config.mak
4825     eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> config.mak
4826     eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> config.mak
4827 }
4828
4829 map 'get_version $v' $LIBRARY_LIST
4830
4831 cat > $TMPH <<EOF