ATRAC+ decoder
[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   --enable-rpath           use rpath to allow installing libraries in paths
91                            not part of the dynamic linker search path
92
93 Licensing options:
94   --enable-gpl             allow use of GPL code, the resulting libs
95                            and binaries will be under GPL [no]
96   --enable-version3        upgrade (L)GPL to version 3 [no]
97   --enable-nonfree         allow use of nonfree code, the resulting libs
98                            and binaries will be unredistributable [no]
99
100 Configuration options:
101   --disable-static         do not build static libraries [no]
102   --enable-shared          build shared libraries [no]
103   --enable-small           optimize for size instead of speed
104   --disable-runtime-cpudetect disable detecting cpu capabilities at runtime (smaller binary)
105   --enable-gray            enable full grayscale support (slower color)
106   --disable-swscale-alpha  disable alpha channel support in swscale
107   --disable-all            disable building components, libraries and programs
108   --enable-incompatible-libav-abi enable incompatible Libav fork ABI [no]
109   --enable-incompatible-fork-abi  enable incompatible Libav fork ABI (deprecated) [no]
110   --enable-raise-major     increase major version numbers in sonames [no]
111
112 Program options:
113   --disable-programs       do not build command line programs
114   --disable-ffmpeg         disable ffmpeg build
115   --disable-ffplay         disable ffplay build
116   --disable-ffprobe        disable ffprobe build
117   --disable-ffserver       disable ffserver build
118
119 Documentation options:
120   --disable-doc            do not build documentation
121   --disable-htmlpages      do not build HTML documentation pages
122   --disable-manpages       do not build man documentation pages
123   --disable-podpages       do not build POD documentation pages
124   --disable-txtpages       do not build text documentation pages
125
126 Component options:
127   --disable-avdevice       disable libavdevice build
128   --disable-avcodec        disable libavcodec build
129   --disable-avformat       disable libavformat build
130   --disable-avutil         disable libavutil build
131   --disable-swresample     disable libswresample build
132   --disable-swscale        disable libswscale build
133   --disable-postproc       disable libpostproc build
134   --disable-avfilter       disable libavfilter build
135   --enable-avresample      enable libavresample build [no]
136   --disable-pthreads       disable pthreads [auto]
137   --disable-w32threads     disable Win32 threads [auto]
138   --disable-os2threads     disable OS/2 threads [auto]
139   --disable-network        disable network support [no]
140   --disable-dct            disable DCT code
141   --disable-dwt            disable DWT code
142   --disable-error-resilience disable error resilience code
143   --disable-lsp            disable LSP code
144   --disable-lzo            disable LZO decoder code
145   --disable-mdct           disable MDCT code
146   --disable-rdft           disable RDFT code
147   --disable-fft            disable FFT code
148
149 Hardware accelerators:
150   --disable-dxva2          disable DXVA2 code [autodetect]
151   --disable-vaapi          disable VAAPI code [autodetect]
152   --enable-vda             enable VDA code
153   --disable-vdpau          disable VDPAU code [autodetect]
154
155 Individual component options:
156   --disable-everything     disable all components listed below
157   --disable-encoder=NAME   disable encoder NAME
158   --enable-encoder=NAME    enable encoder NAME
159   --disable-encoders       disable all encoders
160   --disable-decoder=NAME   disable decoder NAME
161   --enable-decoder=NAME    enable decoder NAME
162   --disable-decoders       disable all decoders
163   --disable-hwaccel=NAME   disable hwaccel NAME
164   --enable-hwaccel=NAME    enable hwaccel NAME
165   --disable-hwaccels       disable all hwaccels
166   --disable-muxer=NAME     disable muxer NAME
167   --enable-muxer=NAME      enable muxer NAME
168   --disable-muxers         disable all muxers
169   --disable-demuxer=NAME   disable demuxer NAME
170   --enable-demuxer=NAME    enable demuxer NAME
171   --disable-demuxers       disable all demuxers
172   --enable-parser=NAME     enable parser NAME
173   --disable-parser=NAME    disable parser NAME
174   --disable-parsers        disable all parsers
175   --enable-bsf=NAME        enable bitstream filter NAME
176   --disable-bsf=NAME       disable bitstream filter NAME
177   --disable-bsfs           disable all bitstream filters
178   --enable-protocol=NAME   enable protocol NAME
179   --disable-protocol=NAME  disable protocol NAME
180   --disable-protocols      disable all protocols
181   --enable-indev=NAME      enable input device NAME
182   --disable-indev=NAME     disable input device NAME
183   --disable-indevs         disable input devices
184   --enable-outdev=NAME     enable output device NAME
185   --disable-outdev=NAME    disable output device NAME
186   --disable-outdevs        disable output devices
187   --disable-devices        disable all devices
188   --enable-filter=NAME     enable filter NAME
189   --disable-filter=NAME    disable filter NAME
190   --disable-filters        disable all filters
191
192 External library support:
193   --enable-avisynth        enable reading of AviSynth script files [no]
194   --disable-bzlib          disable bzlib [autodetect]
195   --enable-fontconfig      enable fontconfig
196   --enable-frei0r          enable frei0r video filtering
197   --enable-gnutls          enable gnutls [no]
198   --disable-iconv          disable iconv [autodetect]
199   --enable-ladspa          enable LADSPA audio filtering
200   --enable-libaacplus      enable AAC+ encoding via libaacplus [no]
201   --enable-libass          enable libass subtitles rendering [no]
202   --enable-libbluray       enable BluRay reading using libbluray [no]
203   --enable-libcaca         enable textual display using libcaca
204   --enable-libcelt         enable CELT decoding via libcelt [no]
205   --enable-libcdio         enable audio CD grabbing with libcdio
206   --enable-libdc1394       enable IIDC-1394 grabbing using libdc1394
207                            and libraw1394 [no]
208   --enable-libfaac         enable AAC encoding via libfaac [no]
209   --enable-libfdk-aac      enable AAC de/encoding via libfdk-aac [no]
210   --enable-libflite        enable flite (voice synthesis) support via libflite [no]
211   --enable-libfreetype     enable libfreetype [no]
212   --enable-libgme          enable Game Music Emu via libgme [no]
213   --enable-libgsm          enable GSM de/encoding via libgsm [no]
214   --enable-libiec61883     enable iec61883 via libiec61883 [no]
215   --enable-libilbc         enable iLBC de/encoding via libilbc [no]
216   --enable-libmodplug      enable ModPlug via libmodplug [no]
217   --enable-libmp3lame      enable MP3 encoding via libmp3lame [no]
218   --enable-libnut          enable NUT (de)muxing via libnut,
219                            native (de)muxer exists [no]
220   --enable-libopencore-amrnb enable AMR-NB de/encoding via libopencore-amrnb [no]
221   --enable-libopencore-amrwb enable AMR-WB decoding via libopencore-amrwb [no]
222   --enable-libopencv       enable video filtering via libopencv [no]
223   --enable-libopenjpeg     enable JPEG 2000 de/encoding via OpenJPEG [no]
224   --enable-libopus         enable Opus decoding via libopus [no]
225   --enable-libpulse        enable Pulseaudio input via libpulse [no]
226   --enable-libquvi         enable quvi input via libquvi [no]
227   --enable-librtmp         enable RTMP[E] support via librtmp [no]
228   --enable-libschroedinger enable Dirac de/encoding via libschroedinger [no]
229   --enable-libshine        enable fixed-point MP3 encoding via libshine [no]
230   --enable-libsoxr         enable Include libsoxr resampling [no]
231   --enable-libspeex        enable Speex de/encoding via libspeex [no]
232   --enable-libssh          enable SFTP protocol via libssh [no]
233   --enable-libstagefright-h264  enable H.264 decoding via libstagefright [no]
234   --enable-libtheora       enable Theora encoding via libtheora [no]
235   --enable-libtwolame      enable MP2 encoding via libtwolame [no]
236   --enable-libutvideo      enable Ut Video encoding and decoding via libutvideo [no]
237   --enable-libv4l2         enable libv4l2/v4l-utils [no]
238   --enable-libvidstab      enable video stabilization using vid.stab [no]
239   --enable-libvo-aacenc    enable AAC encoding via libvo-aacenc [no]
240   --enable-libvo-amrwbenc  enable AMR-WB encoding via libvo-amrwbenc [no]
241   --enable-libvorbis       enable Vorbis en/decoding via libvorbis,
242                            native implementation exists [no]
243   --enable-libvpx          enable VP8 and VP9 de/encoding via libvpx [no]
244   --enable-libwavpack      enable wavpack encoding via libwavpack [no]
245   --enable-libwebp         enable WebP encoding via libwebp [no]
246   --enable-libx264         enable H.264 encoding via x264 [no]
247   --enable-libxavs         enable AVS encoding via xavs [no]
248   --enable-libxvid         enable Xvid encoding via xvidcore,
249                            native MPEG-4/Xvid encoder exists [no]
250   --enable-libzmq          enable message passing via libzmq [no]
251   --enable-libzvbi         enable teletext support via libzvbi [no]
252   --enable-openal          enable OpenAL 1.1 capture support [no]
253   --enable-opencl          enable OpenCL code
254   --enable-openssl         enable openssl [no]
255   --enable-x11grab         enable X11 grabbing [no]
256   --disable-zlib           disable zlib [autodetect]
257
258 Advanced options (experts only):
259   --cross-prefix=PREFIX    use PREFIX for compilation tools [$cross_prefix]
260   --enable-cross-compile   assume a cross-compiler is used
261   --sysroot=PATH           root of cross-build tree
262   --sysinclude=PATH        location of cross-build system headers
263   --target-os=OS           compiler targets OS [$target_os]
264   --target-exec=CMD        command to run executables on target
265   --target-path=DIR        path to view of build directory on target
266   --target-samples=DIR     path to samples directory on target
267   --tempprefix=PATH        force fixed dir/prefix instead of mktemp for checks
268   --toolchain=NAME         set tool defaults according to NAME
269   --nm=NM                  use nm tool NM [$nm_default]
270   --ar=AR                  use archive tool AR [$ar_default]
271   --as=AS                  use assembler AS [$as_default]
272   --windres=WINDRES        use windows resource compiler WINDRES [$windres_default]
273   --yasmexe=EXE            use yasm-compatible assembler EXE [$yasmexe_default]
274   --cc=CC                  use C compiler CC [$cc_default]
275   --cxx=CXX                use C compiler CXX [$cxx_default]
276   --dep-cc=DEPCC           use dependency generator DEPCC [$cc_default]
277   --ld=LD                  use linker LD [$ld_default]
278   --host-cc=HOSTCC         use host C compiler HOSTCC
279   --host-cflags=HCFLAGS    use HCFLAGS when compiling for host
280   --host-cppflags=HCPPFLAGS use HCPPFLAGS when compiling for host
281   --host-ld=HOSTLD         use host linker HOSTLD
282   --host-ldflags=HLDFLAGS  use HLDFLAGS when linking for host
283   --host-libs=HLIBS        use libs HLIBS when linking for host
284   --host-os=OS             compiler host OS [$target_os]
285   --extra-cflags=ECFLAGS   add ECFLAGS to CFLAGS [$CFLAGS]
286   --extra-cxxflags=ECFLAGS add ECFLAGS to CXXFLAGS [$CXXFLAGS]
287   --extra-ldflags=ELDFLAGS add ELDFLAGS to LDFLAGS [$LDFLAGS]
288   --extra-libs=ELIBS       add ELIBS [$ELIBS]
289   --extra-version=STRING   version string suffix []
290   --optflags=OPTFLAGS      override optimization-related compiler flags
291   --build-suffix=SUFFIX    library name suffix []
292   --malloc-prefix=PREFIX   prefix malloc and related names with PREFIX
293   --progs-suffix=SUFFIX    program name suffix []
294   --arch=ARCH              select architecture [$arch]
295   --cpu=CPU                select the minimum required CPU (affects
296                            instruction selection, may crash on older CPUs)
297   --enable-pic             build position-independent code
298   --enable-sram            allow use of on-chip SRAM
299   --enable-thumb           compile for Thumb instruction set
300   --disable-symver         disable symbol versioning
301   --enable-hardcoded-tables use hardcoded tables instead of runtime generation
302   --disable-safe-bitstream-reader
303                            disable buffer boundary checking in bitreaders
304                            (faster, but may crash)
305   --enable-memalign-hack   emulate memalign, interferes with memory debuggers
306   --enable-lto             use link-time optimization
307
308 Optimization options (experts only):
309   --disable-asm            disable all assembler optimizations
310   --disable-altivec        disable AltiVec optimizations
311   --disable-amd3dnow       disable 3DNow! optimizations
312   --disable-amd3dnowext    disable 3DNow! extended optimizations
313   --disable-mmx            disable MMX optimizations
314   --disable-mmxext         disable MMXEXT optimizations
315   --disable-sse            disable SSE optimizations
316   --disable-sse2           disable SSE2 optimizations
317   --disable-sse3           disable SSE3 optimizations
318   --disable-ssse3          disable SSSE3 optimizations
319   --disable-sse4           disable SSE4 optimizations
320   --disable-sse42          disable SSE4.2 optimizations
321   --disable-avx            disable AVX optimizations
322   --disable-fma4           disable FMA4 optimizations
323   --disable-avx2           disable AVX2 optimizations
324   --disable-armv5te        disable armv5te optimizations
325   --disable-armv6          disable armv6 optimizations
326   --disable-armv6t2        disable armv6t2 optimizations
327   --disable-vfp            disable VFP optimizations
328   --disable-neon           disable NEON optimizations
329   --disable-vis            disable VIS optimizations
330   --disable-inline-asm     disable use of inline assembler
331   --disable-yasm           disable use of yasm assembler
332   --disable-mips32r2       disable MIPS32R2 optimizations
333   --disable-mipsdspr1      disable MIPS DSP ASE R1 optimizations
334   --disable-mipsdspr2      disable MIPS DSP ASE R2 optimizations
335   --disable-mipsfpu        disable floating point MIPS optimizations
336   --disable-fast-unaligned consider unaligned accesses slow
337
338 Developer options (useful when working on FFmpeg itself):
339   --disable-debug          disable debugging symbols
340   --enable-debug=LEVEL     set the debug level [$debuglevel]
341   --disable-optimizations  disable compiler optimizations
342   --enable-extra-warnings  enable more compiler warnings
343   --disable-stripping      disable stripping of executables and shared libraries
344   --assert-level=level     0(default), 1 or 2, amount of assertion testing,
345                            2 causes a slowdown at runtime.
346   --enable-memory-poisoning fill heap uninitialized allocated space with arbitrary data
347   --valgrind=VALGRIND      run "make fate" tests through valgrind to detect memory
348                            leaks and errors, using the specified valgrind binary.
349                            Cannot be combined with --target-exec
350   --enable-ftrapv          Trap arithmetic overflows
351   --samples=PATH           location of test samples for FATE, if not set use
352                            \$FATE_SAMPLES at make invocation time.
353   --enable-xmm-clobber-test check XMM registers for clobbering (Win64-only;
354                            should be used only for debugging purposes)
355   --enable-random          randomly enable/disable components
356   --disable-random
357   --enable-random=LIST     randomly enable/disable specific components or
358   --disable-random=LIST    component groups. LIST is a comma-separated list
359                            of NAME[:PROB] entries where NAME is a component
360                            (group) and PROB the probability associated with
361                            NAME (default 0.5).
362   --random-seed=VALUE      seed value for --enable/disable-random
363
364 NOTE: Object files are built at the place where configure is launched.
365 EOF
366   exit 0
367 }
368
369 quotes='""'
370
371 log(){
372     echo "$@" >> $logfile
373 }
374
375 log_file(){
376     log BEGIN $1
377     pr -n -t $1 >> $logfile
378     log END $1
379 }
380
381 echolog(){
382     log "$@"
383     echo "$@"
384 }
385
386 warn(){
387     log "WARNING: $*"
388     WARNINGS="${WARNINGS}WARNING: $*\n"
389 }
390
391 die(){
392     echolog "$@"
393     cat <<EOF
394
395 If you think configure made a mistake, make sure you are using the latest
396 version from Git.  If the latest version fails, report the problem to the
397 ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
398 EOF
399     if disabled logging; then
400         cat <<EOF
401 Rerun configure with logging enabled (do not use --disable-logging), and
402 include the log this produces with your report.
403 EOF
404     else
405         cat <<EOF
406 Include the log file "$logfile" produced by configure as this will help
407 solving the problem.
408 EOF
409     fi
410     exit 1
411 }
412
413 # Avoid locale weirdness, besides we really just want to translate ASCII.
414 toupper(){
415     echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
416 }
417
418 tolower(){
419     echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
420 }
421
422 c_escape(){
423     echo "$*" | sed 's/["\\]/\\\0/g'
424 }
425
426 sh_quote(){
427     v=$(echo "$1" | sed "s/'/'\\\\''/g")
428     test "x$v" = "x${v#*[!A-Za-z0-9_/.+-]}" || v="'$v'"
429     echo "$v"
430 }
431
432 cleanws(){
433     echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//;s/\r//g'
434 }
435
436 filter(){
437     pat=$1
438     shift
439     for v; do
440         eval "case $v in $pat) echo $v ;; esac"
441     done
442 }
443
444 filter_out(){
445     pat=$1
446     shift
447     for v; do
448         eval "case $v in $pat) ;; *) echo $v ;; esac"
449     done
450 }
451
452 map(){
453     m=$1
454     shift
455     for v; do eval $m; done
456 }
457
458 add_suffix(){
459     suffix=$1
460     shift
461     for v; do echo ${v}${suffix}; done
462 }
463
464 set_all(){
465     value=$1
466     shift
467     for var in $*; do
468         eval $var=$value
469     done
470 }
471
472 set_weak(){
473     value=$1
474     shift
475     for var; do
476         eval : \${$var:=$value}
477     done
478 }
479
480 sanitize_var_name(){
481     echo $@ | sed 's/[^A-Za-z0-9_]/_/g'
482 }
483
484 set_safe(){
485     var=$1
486     shift
487     eval $(sanitize_var_name "$var")='$*'
488 }
489
490 get_safe(){
491     eval echo \$$(sanitize_var_name "$1")
492 }
493
494 pushvar(){
495     for pvar in $*; do
496         eval level=\${${pvar}_level:=0}
497         eval ${pvar}_${level}="\$$pvar"
498         eval ${pvar}_level=$(($level+1))
499     done
500 }
501
502 popvar(){
503     for pvar in $*; do
504         eval level=\${${pvar}_level:-0}
505         test $level = 0 && continue
506         eval level=$(($level-1))
507         eval $pvar="\${${pvar}_${level}}"
508         eval ${pvar}_level=$level
509         eval unset ${pvar}_${level}
510     done
511 }
512
513 enable(){
514     set_all yes $*
515 }
516
517 disable(){
518     set_all no $*
519 }
520
521 enable_weak(){
522     set_weak yes $*
523 }
524
525 disable_weak(){
526     set_weak no $*
527 }
528
529 enable_safe(){
530     for var; do
531         enable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
532     done
533 }
534
535 disable_safe(){
536     for var; do
537         disable $(echo "$var" | sed 's/[^A-Za-z0-9_]/_/g')
538     done
539 }
540
541 do_enable_deep(){
542     for var; do
543         enabled $var && continue
544         eval sel="\$${var}_select"
545         eval sgs="\$${var}_suggest"
546         pushvar var sgs
547         enable_deep $sel
548         popvar sgs
549         enable_deep_weak $sgs
550         popvar var
551     done
552 }
553
554 enable_deep(){
555     do_enable_deep $*
556     enable $*
557 }
558
559 enable_deep_weak(){
560     for var; do
561         disabled $var && continue
562         pushvar var
563         do_enable_deep $var
564         popvar var
565         enable_weak $var
566     done
567 }
568
569 enabled(){
570     test "${1#!}" = "$1" && op== || op=!=
571     eval test "x\$${1#!}" $op "xyes"
572 }
573
574 disabled(){
575     test "${1#!}" = "$1" && op== || op=!=
576     eval test "x\$${1#!}" $op "xno"
577 }
578
579 enabled_all(){
580     for opt; do
581         enabled $opt || return 1
582     done
583 }
584
585 disabled_all(){
586     for opt; do
587         disabled $opt || return 1
588     done
589 }
590
591 enabled_any(){
592     for opt; do
593         enabled $opt && return 0
594     done
595 }
596
597 disabled_any(){
598     for opt; do
599         disabled $opt && return 0
600     done
601     return 1
602 }
603
604 set_default(){
605     for opt; do
606         eval : \${$opt:=\$${opt}_default}
607     done
608 }
609
610 is_in(){
611     value=$1
612     shift
613     for var in $*; do
614         [ $var = $value ] && return 0
615     done
616     return 1
617 }
618
619 do_check_deps(){
620     for cfg; do
621         cfg="${cfg#!}"
622         enabled ${cfg}_checking && die "Circular dependency for $cfg."
623         disabled ${cfg}_checking && continue
624         enable ${cfg}_checking
625         append allopts $cfg
626
627         eval dep_all="\$${cfg}_deps"
628         eval dep_any="\$${cfg}_deps_any"
629         eval dep_sel="\$${cfg}_select"
630         eval dep_sgs="\$${cfg}_suggest"
631         eval dep_ifa="\$${cfg}_if"
632         eval dep_ifn="\$${cfg}_if_any"
633
634         pushvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
635         do_check_deps $dep_all $dep_any $dep_sel $dep_sgs $dep_ifa $dep_ifn
636         popvar cfg dep_all dep_any dep_sel dep_sgs dep_ifa dep_ifn
637
638         [ -n "$dep_ifa" ] && { enabled_all $dep_ifa && enable_weak $cfg; }
639         [ -n "$dep_ifn" ] && { enabled_any $dep_ifn && enable_weak $cfg; }
640         enabled_all  $dep_all || disable $cfg
641         enabled_any  $dep_any || disable $cfg
642         disabled_any $dep_sel && disable $cfg
643
644         if enabled $cfg; then
645             enable_deep $dep_sel
646             enable_deep_weak $dep_sgs
647         fi
648
649         disable ${cfg}_checking
650     done
651 }
652
653 check_deps(){
654     unset allopts
655
656     do_check_deps "$@"
657
658     for cfg in $allopts; do
659         enabled $cfg || continue
660         eval dep_extralibs="\$${cfg}_extralibs"
661         test -n "$dep_extralibs" && add_extralibs $dep_extralibs
662     done
663 }
664
665 print_config(){
666     pfx=$1
667     files=$2
668     shift 2
669     map 'eval echo "$v \${$v:-no}"' "$@" |
670     awk "BEGIN { split(\"$files\", files) }
671         {
672             c = \"$pfx\" toupper(\$1);
673             v = \$2;
674             sub(/yes/, 1, v);
675             sub(/no/,  0, v);
676             for (f in files) {
677                 file = files[f];
678                 if (file ~ /\\.h\$/) {
679                     printf(\"#define %s %d\\n\", c, v) >>file;
680                 } else if (file ~ /\\.asm\$/) {
681                     printf(\"%%define %s %d\\n\", c, v) >>file;
682                 } else if (file ~ /\\.mak\$/) {
683                     n = -v ? \"\" : \"!\";
684                     printf(\"%s%s=yes\\n\", n, c) >>file;
685                 } else if (file ~ /\\.texi\$/) {
686                     pre = -v ? \"\" : \"@c \";
687                     yesno = \$2;
688                     c2 = tolower(c);
689                     gsub(/_/, \"-\", c2);
690                     printf(\"%s@set %s %s\\n\", pre, c2, yesno) >>file;
691                 }
692             }
693         }"
694 }
695
696 print_enabled(){
697     suf=$1
698     shift
699     for v; do
700         enabled $v && printf "%s\n" ${v%$suf};
701     done
702 }
703
704 append(){
705     var=$1
706     shift
707     eval "$var=\"\$$var $*\""
708 }
709
710 prepend(){
711     var=$1
712     shift
713     eval "$var=\"$* \$$var\""
714 }
715
716 add_cppflags(){
717     append CPPFLAGS "$@"
718 }
719
720 add_cflags(){
721     append CFLAGS $($cflags_filter "$@")
722 }
723
724 add_cxxflags(){
725     append CXXFLAGS $($cflags_filter "$@")
726 }
727
728 add_asflags(){
729     append ASFLAGS $($asflags_filter "$@")
730 }
731
732 add_ldflags(){
733     append LDFLAGS $($ldflags_filter "$@")
734 }
735
736 add_stripflags(){
737     append ASMSTRIPFLAGS "$@"
738 }
739
740 add_extralibs(){
741     prepend extralibs $($ldflags_filter "$@")
742 }
743
744 add_host_cppflags(){
745     append host_cppflags "$@"
746 }
747
748 add_host_cflags(){
749     append host_cflags $($host_cflags_filter "$@")
750 }
751
752 add_host_ldflags(){
753     append host_ldflags $($host_ldflags_filter "$@")
754 }
755
756 add_compat(){
757     append compat_objs $1
758     shift
759     map 'add_cppflags -D$v' "$@"
760 }
761
762 check_cmd(){
763     log "$@"
764     "$@" >> $logfile 2>&1
765 }
766
767 cc_o(){
768     eval printf '%s\\n' $CC_O
769 }
770
771 cc_e(){
772     eval printf '%s\\n' $CC_E
773 }
774
775 check_cc(){
776     log check_cc "$@"
777     cat > $TMPC
778     log_file $TMPC
779     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $CC_C $(cc_o $TMPO) $TMPC
780 }
781
782 check_cxx(){
783     log check_cxx "$@"
784     cat > $TMPCPP
785     log_file $TMPCPP
786     check_cmd $cxx $CPPFLAGS $CFLAGS $CXXFLAGS "$@" $CXX_C -o $TMPO $TMPCPP
787 }
788
789 check_cpp(){
790     log check_cpp "$@"
791     cat > $TMPC
792     log_file $TMPC
793     check_cmd $cc $CPPFLAGS $CFLAGS "$@" $(cc_e $TMPO) $TMPC
794 }
795
796 as_o(){
797     eval printf '%s\\n' $AS_O
798 }
799
800 check_as(){
801     log check_as "$@"
802     cat > $TMPS
803     log_file $TMPS
804     check_cmd $as $CPPFLAGS $ASFLAGS "$@" $AS_C $(as_o $TMPO) $TMPS
805 }
806
807 check_inline_asm(){
808     log check_inline_asm "$@"
809     name="$1"
810     code="$2"
811     shift 2
812     disable $name
813     check_cc "$@" <<EOF && enable $name
814 void foo(void){ __asm__ volatile($code); }
815 EOF
816 }
817
818 check_insn(){
819     log check_insn "$@"
820     check_inline_asm ${1}_inline "\"$2\""
821     echo "$2" | check_as && enable ${1}_external || disable ${1}_external
822 }
823
824 check_yasm(){
825     log check_yasm "$@"
826     echo "$1" > $TMPS
827     log_file $TMPS
828     shift 1
829     check_cmd $yasmexe $YASMFLAGS -Werror "$@" -o $TMPO $TMPS
830 }
831
832 ld_o(){
833     eval printf '%s\\n' $LD_O
834 }
835
836 check_ld(){
837     log check_ld "$@"
838     type=$1
839     shift 1
840     flags=$(filter_out '-l*|*.so' $@)
841     libs=$(filter '-l*|*.so' $@)
842     check_$type $($cflags_filter $flags) || return
843     flags=$($ldflags_filter $flags)
844     libs=$($ldflags_filter $libs)
845     check_cmd $ld $LDFLAGS $flags $(ld_o $TMPE) $TMPO $libs $extralibs
846 }
847
848 check_code(){
849     log check_code "$@"
850     check=$1
851     headers=$2
852     code=$3
853     shift 3
854     {
855         for hdr in $headers; do
856             echo "#include <$hdr>"
857         done
858         echo "int main(void) { $code; return 0; }"
859     } | check_$check "$@"
860 }
861
862 check_cppflags(){
863     log check_cppflags "$@"
864     check_cc "$@" <<EOF && append CPPFLAGS "$@"
865 int x;
866 EOF
867 }
868
869 test_cflags(){
870     log test_cflags "$@"
871     set -- $($cflags_filter "$@")
872     check_cc "$@" <<EOF
873 int x;
874 EOF
875 }
876
877 check_cflags(){
878     log check_cflags "$@"
879     test_cflags "$@" && add_cflags "$@"
880 }
881
882 check_cxxflags(){
883     log check_cxxflags "$@"
884     set -- $($cflags_filter "$@")
885     check_cxx "$@" <<EOF && append CXXFLAGS "$@"
886 int x;
887 EOF
888 }
889
890 test_ldflags(){
891     log test_ldflags "$@"
892     check_ld "cc" "$@" <<EOF
893 int main(void){ return 0; }
894 EOF
895 }
896
897 check_ldflags(){
898     log check_ldflags "$@"
899     test_ldflags "$@" && add_ldflags "$@"
900 }
901
902 test_stripflags(){
903     log test_stripflags "$@"
904     # call check_cc to get a fresh TMPO
905     check_cc <<EOF
906 int main(void) { return 0; }
907 EOF
908     check_cmd $strip $ASMSTRIPFLAGS "$@" $TMPO
909 }
910
911 check_stripflags(){
912     log check_stripflags "$@"
913     test_stripflags "$@" && add_stripflags "$@"
914 }
915
916 check_header(){
917     log check_header "$@"
918     header=$1
919     shift
920     disable_safe $header
921     check_cpp "$@" <<EOF && enable_safe $header
922 #include <$header>
923 int x;
924 EOF
925 }
926
927 check_func(){
928     log check_func "$@"
929     func=$1
930     shift
931     disable $func
932     check_ld "cc" "$@" <<EOF && enable $func
933 extern int $func();
934 int main(void){ $func(); }
935 EOF
936 }
937
938 check_mathfunc(){
939     log check_mathfunc "$@"
940     func=$1
941     narg=$2
942     shift 2
943     test $narg = 2 && args="f, g" || args="f"
944     disable $func
945     check_ld "cc" "$@" <<EOF && enable $func
946 #include <math.h>
947 float foo(float f, float g) { return $func($args); }
948 int main(void){ return (int) foo; }
949 EOF
950 }
951
952 check_func_headers(){
953     log check_func_headers "$@"
954     headers=$1
955     funcs=$2
956     shift 2
957     {
958         for hdr in $headers; do
959             echo "#include <$hdr>"
960         done
961         for func in $funcs; do
962             echo "long check_$func(void) { return (long) $func; }"
963         done
964         echo "int main(void) { return 0; }"
965     } | check_ld "cc" "$@" && enable $funcs && enable_safe $headers
966 }
967
968 check_class_headers_cpp(){
969     log check_class_headers_cpp "$@"
970     headers=$1
971     classes=$2
972     shift 2
973     {
974         for hdr in $headers; do
975             echo "#include <$hdr>"
976         done
977         echo "int main(void) { "
978         i=1
979         for class in $classes; do
980             echo "$class obj$i;"
981             i=$(expr $i + 1)
982         done
983         echo "return 0; }"
984     } | check_ld "cxx" "$@" && enable $funcs && enable_safe $headers
985 }
986
987 check_cpp_condition(){
988     log check_cpp_condition "$@"
989     header=$1
990     condition=$2
991     shift 2
992     check_cpp "$@" <<EOF
993 #include <$header>
994 #if !($condition)
995 #error "unsatisfied condition: $condition"
996 #endif
997 EOF
998 }
999
1000 check_lib(){
1001     log check_lib "$@"
1002     header="$1"
1003     func="$2"
1004     shift 2
1005     check_header $header && check_func $func "$@" && add_extralibs "$@"
1006 }
1007
1008 check_lib2(){
1009     log check_lib2 "$@"
1010     headers="$1"
1011     funcs="$2"
1012     shift 2
1013     check_func_headers "$headers" "$funcs" "$@" && add_extralibs "$@"
1014 }
1015
1016 check_lib_cpp(){
1017     log check_lib_cpp "$@"
1018     headers="$1"
1019     classes="$2"
1020     shift 2
1021     check_class_headers_cpp "$headers" "$classes" "$@" && add_extralibs "$@"
1022 }
1023
1024 check_pkg_config(){
1025     log check_pkg_config "$@"
1026     pkg="$1"
1027     headers="$2"
1028     funcs="$3"
1029     shift 3
1030     check_cmd $pkg_config --exists --print-errors $pkg || return
1031     pkg_cflags=$($pkg_config --cflags $pkg)
1032     pkg_libs=$($pkg_config --libs $pkg)
1033     check_func_headers "$headers" "$funcs" $pkg_cflags $pkg_libs "$@" &&
1034         set_safe ${pkg}_cflags $pkg_cflags   &&
1035         set_safe ${pkg}_libs   $pkg_libs
1036 }
1037
1038 check_exec(){
1039     check_ld "cc" "$@" && { enabled cross_compile || $TMPE >> $logfile 2>&1; }
1040 }
1041
1042 check_exec_crash(){
1043     code=$(cat)
1044
1045     # exit() is not async signal safe.  _Exit (C99) and _exit (POSIX)
1046     # are safe but may not be available everywhere.  Thus we use
1047     # raise(SIGTERM) instead.  The check is run in a subshell so we
1048     # can redirect the "Terminated" message from the shell.  SIGBUS
1049     # is not defined by standard C so it is used conditionally.
1050
1051     (check_exec "$@") >> $logfile 2>&1 <<EOF
1052 #include <signal.h>
1053 static void sighandler(int sig){
1054     raise(SIGTERM);
1055 }
1056 int foo(void){
1057     $code
1058 }
1059 int (*func_ptr)(void) = foo;
1060 int main(void){
1061     signal(SIGILL, sighandler);
1062     signal(SIGFPE, sighandler);
1063     signal(SIGSEGV, sighandler);
1064 #ifdef SIGBUS
1065     signal(SIGBUS, sighandler);
1066 #endif
1067     return func_ptr();
1068 }
1069 EOF
1070 }
1071
1072 check_type(){
1073     log check_type "$@"
1074     headers=$1
1075     type=$2
1076     shift 2
1077     disable_safe "$type"
1078     check_code cc "$headers" "$type v" "$@" && enable_safe "$type"
1079 }
1080
1081 check_struct(){
1082     log check_struct "$@"
1083     headers=$1
1084     struct=$2
1085     member=$3
1086     shift 3
1087     disable_safe "${struct}_${member}"
1088     check_code cc "$headers" "const void *p = &(($struct *)0)->$member" "$@" &&
1089         enable_safe "${struct}_${member}"
1090 }
1091
1092 check_builtin(){
1093     log check_builtin "$@"
1094     name=$1
1095     headers=$2
1096     builtin=$3
1097     shift 3
1098     disable "$name"
1099     check_code ld "$headers" "$builtin" "cc" "$@" && enable "$name"
1100 }
1101
1102 require(){
1103     name="$1"
1104     header="$2"
1105     func="$3"
1106     shift 3
1107     check_lib $header $func "$@" || die "ERROR: $name not found"
1108 }
1109
1110 require2(){
1111     name="$1"
1112     headers="$2"
1113     func="$3"
1114     shift 3
1115     check_lib2 "$headers" $func "$@" || die "ERROR: $name not found"
1116 }
1117
1118 require_cpp(){
1119     name="$1"
1120     headers="$2"
1121     classes="$3"
1122     shift 3
1123     check_lib_cpp "$headers" "$classes" "$@" || die "ERROR: $name not found"
1124 }
1125
1126 require_pkg_config(){
1127     pkg="$1"
1128     check_pkg_config "$@" || die "ERROR: $pkg not found"
1129     add_cflags    $(get_safe ${pkg}_cflags)
1130     add_extralibs $(get_safe ${pkg}_libs)
1131 }
1132
1133 require_libfreetype(){
1134     log require_libfreetype "$@"
1135     pkg="freetype2"
1136     check_cmd $pkg_config --exists --print-errors $pkg \
1137       || die "ERROR: $pkg not found"
1138     pkg_cflags=$($pkg_config --cflags $pkg)
1139     pkg_libs=$($pkg_config --libs $pkg)
1140     {
1141         echo "#include <ft2build.h>"
1142         echo "#include FT_FREETYPE_H"
1143         echo "long check_func(void) { return (long) FT_Init_FreeType; }"
1144         echo "int main(void) { return 0; }"
1145     } | check_ld "cc" $pkg_cflags $pkg_libs \
1146       && set_safe ${pkg}_cflags $pkg_cflags \
1147       && set_safe ${pkg}_libs   $pkg_libs \
1148       || die "ERROR: $pkg not found"
1149     add_cflags    $(get_safe ${pkg}_cflags)
1150     add_extralibs $(get_safe ${pkg}_libs)
1151 }
1152
1153 hostcc_e(){
1154     eval printf '%s\\n' $HOSTCC_E
1155 }
1156
1157 hostcc_o(){
1158     eval printf '%s\\n' $HOSTCC_O
1159 }
1160
1161 check_host_cc(){
1162     log check_host_cc "$@"
1163     cat > $TMPC
1164     log_file $TMPC
1165     check_cmd $host_cc $host_cflags "$@" $HOSTCC_C $(hostcc_o $TMPO) $TMPC
1166 }
1167
1168 check_host_cpp(){
1169     log check_host_cpp "$@"
1170     cat > $TMPC
1171     log_file $TMPC
1172     check_cmd $host_cc $HOSTCPPFLAGS $HOSTCFLAGS "$@" $(hostcc_e $TMPO) $TMPC
1173 }
1174
1175 check_host_cppflags(){
1176     log check_host_cppflags "$@"
1177     check_host_cc "$@" <<EOF && append host_cppflags "$@"
1178 int x;
1179 EOF
1180 }
1181
1182 check_host_cflags(){
1183     log check_host_cflags "$@"
1184     set -- $($host_cflags_filter "$@")
1185     check_host_cc "$@" <<EOF && append host_cflags "$@"
1186 int x;
1187 EOF
1188 }
1189
1190 check_host_cpp_condition(){
1191     log check_host_cpp_condition "$@"
1192     header=$1
1193     condition=$2
1194     shift 2
1195     check_host_cpp "$@" <<EOF
1196 #include <$header>
1197 #if !($condition)
1198 #error "unsatisfied condition: $condition"
1199 #endif
1200 EOF
1201 }
1202
1203 apply(){
1204     file=$1
1205     shift
1206     "$@" < "$file" > "$file.tmp" && mv "$file.tmp" "$file" || rm "$file.tmp"
1207 }
1208
1209 cp_if_changed(){
1210     cmp -s "$1" "$2" && echo "$2 is unchanged" && return
1211     mkdir -p "$(dirname $2)"
1212     $cp_f "$1" "$2"
1213 }
1214
1215 # CONFIG_LIST contains configurable options, while HAVE_LIST is for
1216 # system-dependent things.
1217
1218 COMPONENT_LIST="
1219     bsfs
1220     decoders
1221     demuxers
1222     encoders
1223     filters
1224     hwaccels
1225     indevs
1226     muxers
1227     outdevs
1228     parsers
1229     protocols
1230 "
1231
1232 EXAMPLE_LIST="
1233     decoding_encoding_example
1234     demuxing_decoding_example
1235     filtering_audio_example
1236     filtering_video_example
1237     metadata_example
1238     muxing_example
1239     resampling_audio_example
1240     scaling_video_example
1241     transcode_aac_example
1242 "
1243
1244 EXTERNAL_LIBRARY_LIST="
1245     avisynth
1246     bzlib
1247     crystalhd
1248     fontconfig
1249     frei0r
1250     gnutls
1251     iconv
1252     ladspa
1253     libaacplus
1254     libass
1255     libbluray
1256     libcaca
1257     libcdio
1258     libcelt
1259     libdc1394
1260     libfaac
1261     libfdk_aac
1262     libflite
1263     libfreetype
1264     libgme
1265     libgsm
1266     libiec61883
1267     libilbc
1268     libmodplug
1269     libmp3lame
1270     libnut
1271     libopencore_amrnb
1272     libopencore_amrwb
1273     libopencv
1274     libopenjpeg
1275     libopus
1276     libpulse
1277     libquvi
1278     librtmp
1279     libschroedinger
1280     libshine
1281     libsoxr
1282     libspeex
1283     libssh
1284     libstagefright_h264
1285     libtheora
1286     libtwolame
1287     libutvideo
1288     libv4l2
1289     libvidstab
1290     libvo_aacenc
1291     libvo_amrwbenc
1292     libvorbis
1293     libvpx
1294     libwavpack
1295     libwebp
1296     libx264
1297     libxavs
1298     libxvid
1299     libzmq
1300     libzvbi
1301     openal
1302     opencl
1303     openssl
1304     x11grab
1305     zlib
1306 "
1307
1308 DOCUMENT_LIST="
1309     doc
1310     htmlpages
1311     manpages
1312     podpages
1313     txtpages
1314 "
1315
1316 HWACCEL_LIST="
1317     dxva2
1318     vaapi
1319     vda
1320     vdpau
1321     xvmc
1322 "
1323
1324 LIBRARY_LIST="
1325     avcodec
1326     avdevice
1327     avfilter
1328     avformat
1329     avresample
1330     avutil
1331     postproc
1332     swresample
1333     swscale
1334 "
1335
1336 PROGRAM_LIST="
1337     ffplay
1338     ffprobe
1339     ffserver
1340     ffmpeg
1341 "
1342
1343 CONFIG_LIST="
1344     $COMPONENT_LIST
1345     $DOCUMENT_LIST
1346     $EXAMPLE_LIST
1347     $EXTERNAL_LIBRARY_LIST
1348     $HWACCEL_LIST
1349     $LIBRARY_LIST
1350     $PROGRAM_LIST
1351     dct
1352     dwt
1353     error_resilience
1354     fast_unaligned
1355     fft
1356     ftrapv
1357     gpl
1358     gray
1359     hardcoded_tables
1360     incompatible_libav_abi
1361     incompatible_fork_abi
1362     lsp
1363     lzo
1364     mdct
1365     memalign_hack
1366     memory_poisoning
1367     network
1368     nonfree
1369     pic
1370     raise_major
1371     rdft
1372     runtime_cpudetect
1373     safe_bitstream_reader
1374     shared
1375     small
1376     sram
1377     static
1378     swscale_alpha
1379     thumb
1380     version3
1381     xmm_clobber_test
1382 "
1383
1384 THREADS_LIST='
1385     pthreads
1386     w32threads
1387     os2threads
1388 '
1389
1390 ATOMICS_LIST='
1391     atomics_gcc
1392     atomics_suncc
1393     atomics_win32
1394 '
1395
1396 ARCH_LIST='
1397     aarch64
1398     alpha
1399     arm
1400     avr32
1401     avr32_ap
1402     avr32_uc
1403     bfin
1404     ia64
1405     m68k
1406     mips
1407     mips64
1408     parisc
1409     ppc
1410     ppc64
1411     s390
1412     sh4
1413     sparc
1414     sparc64
1415     tilegx
1416     tilepro
1417     tomi
1418     x86
1419     x86_32
1420     x86_64
1421 '
1422
1423 ARCH_EXT_LIST_ARM='
1424     armv5te
1425     armv6
1426     armv6t2
1427     neon
1428     vfp
1429     vfpv3
1430 '
1431
1432 ARCH_EXT_LIST_X86='
1433     amd3dnow
1434     amd3dnowext
1435     avx
1436     avx2
1437     fma4
1438     i686
1439     mmx
1440     mmxext
1441     sse
1442     sse2
1443     sse3
1444     sse4
1445     sse42
1446     ssse3
1447 '
1448
1449 ARCH_EXT_LIST="
1450     $ARCH_EXT_LIST_ARM
1451     $ARCH_EXT_LIST_X86
1452     altivec
1453     ppc4xx
1454     vis
1455     mipsfpu
1456     mips32r2
1457     mipsdspr1
1458     mipsdspr2
1459 "
1460
1461 HAVE_LIST_CMDLINE='
1462     inline_asm
1463     symver
1464     yasm
1465 '
1466
1467 HAVE_LIST_PUB='
1468     bigendian
1469     fast_unaligned
1470     incompatible_libav_abi
1471     incompatible_fork_abi
1472 '
1473
1474 MATH_FUNCS="
1475     atanf
1476     atan2f
1477     cbrt
1478     cbrtf
1479     cosf
1480     exp2
1481     exp2f
1482     expf
1483     isinf
1484     isnan
1485     ldexpf
1486     llrint
1487     llrintf
1488     log2
1489     log2f
1490     log10f
1491     lrint
1492     lrintf
1493     powf
1494     rint
1495     round
1496     roundf
1497     sinf
1498     trunc
1499     truncf
1500 "
1501
1502 HAVE_LIST="
1503     $ARCH_EXT_LIST
1504     $(add_suffix _external $ARCH_EXT_LIST)
1505     $(add_suffix _inline   $ARCH_EXT_LIST)
1506     $HAVE_LIST_CMDLINE
1507     $HAVE_LIST_PUB
1508     $THREADS_LIST
1509     $ATOMICS_LIST
1510     $MATH_FUNCS
1511     access
1512     aligned_malloc
1513     aligned_stack
1514     alsa_asoundlib_h
1515     altivec_h
1516     arpa_inet_h
1517     asm_mod_q
1518     asm_mod_y
1519     asm_types_h
1520     atomic_cas_ptr
1521     atomics_native
1522     attribute_may_alias
1523     attribute_packed
1524     cdio_paranoia_h
1525     cdio_paranoia_paranoia_h
1526     CL_cl_h
1527     clock_gettime
1528     closesocket
1529     CommandLineToArgvW
1530     cpunop
1531     CryptGenRandom
1532     dcbzl
1533     dev_bktr_ioctl_bt848_h
1534     dev_bktr_ioctl_meteor_h
1535     dev_ic_bt8xx_h
1536     dev_video_bktr_ioctl_bt848_h
1537     dev_video_meteor_ioctl_meteor_h
1538     direct_h
1539     dlfcn_h
1540     dlopen
1541     dos_paths
1542     dxva_h
1543     ebp_available
1544     ebx_available
1545     fast_64bit
1546     fast_clz
1547     fast_cmov
1548     fcntl
1549     fork
1550     getaddrinfo
1551     gethrtime
1552     getopt
1553     GetProcessAffinityMask
1554     GetProcessMemoryInfo
1555     GetProcessTimes
1556     GetSystemTimeAsFileTime
1557     getrusage
1558     getservbyport
1559     gettimeofday
1560     glob
1561     gnu_as
1562     gnu_windres
1563     gsm_h
1564     ibm_asm
1565     inet_aton
1566     io_h
1567     inline_asm_labels
1568     isatty
1569     jack_port_get_latency_range
1570     kbhit
1571     ldbrx
1572     libc_msvcrt
1573     libdc1394_1
1574     libdc1394_2
1575     local_aligned_16
1576     local_aligned_8
1577     localtime_r
1578     loongson
1579     lzo1x_999_compress
1580     machine_ioctl_bt848_h
1581     machine_ioctl_meteor_h
1582     machine_rw_barrier
1583     makeinfo
1584     malloc_h
1585     MapViewOfFile
1586     memalign
1587     MemoryBarrier
1588     mkstemp
1589     mm_empty
1590     mmap
1591     mprotect
1592     nanosleep
1593     openjpeg_1_5_openjpeg_h
1594     PeekNamedPipe
1595     perl
1596     pod2man
1597     poll_h
1598     posix_memalign
1599     pragma_deprecated
1600     pthread_cancel
1601     rdtsc
1602     rsync_contimeout
1603     sarestart
1604     sched_getaffinity
1605     sdl
1606     SetConsoleTextAttribute
1607     setmode
1608     setrlimit
1609     Sleep
1610     sndio_h
1611     socklen_t
1612     soundcard_h
1613     strerror_r
1614     struct_addrinfo
1615     struct_group_source_req
1616     struct_ip_mreq_source
1617     struct_ipv6_mreq
1618     struct_pollfd
1619     struct_rusage_ru_maxrss
1620     struct_sctp_event_subscribe
1621     struct_sockaddr_in6
1622     struct_sockaddr_sa_len
1623     struct_sockaddr_storage
1624     struct_stat_st_mtim_tv_nsec
1625     struct_v4l2_frmivalenum_discrete
1626     symver_asm_label
1627     symver_gnu_asm
1628     sync_val_compare_and_swap
1629     sysconf
1630     sysctl
1631     sys_mman_h
1632     sys_param_h
1633     sys_resource_h
1634     sys_select_h
1635     sys_soundcard_h
1636     sys_time_h
1637     sys_un_h
1638     sys_videoio_h
1639     termios_h
1640     texi2html
1641     threads
1642     unistd_h
1643     usleep
1644     vdpau_x11
1645     vfp_args
1646     VirtualAlloc
1647     windows_h
1648     winsock2_h
1649     xform_asm
1650     xlib
1651     xmm_clobbers
1652 "
1653
1654 # options emitted with CONFIG_ prefix but not available on the command line
1655 CONFIG_EXTRA="
1656     aandcttables
1657     ac3dsp
1658     audio_frame_queue
1659     dsputil
1660     exif
1661     frame_thread_encoder
1662     gcrypt
1663     golomb
1664     gplv3
1665     h263dsp
1666     h264chroma
1667     h264dsp
1668     h264pred
1669     h264qpel
1670     hpeldsp
1671     huffman
1672     lgplv3
1673     lpc
1674     mpegaudio
1675     mpegaudiodsp
1676     mpegvideo
1677     mpegvideoenc
1678     nettle
1679     rangecoder
1680     riffdec
1681     riffenc
1682     rtpdec
1683     rtpenc_chain
1684     sinewin
1685     videodsp
1686     vp3dsp
1687 "
1688
1689 CMDLINE_SELECT="
1690     $ARCH_EXT_LIST
1691     $CONFIG_LIST
1692     $HAVE_LIST_CMDLINE
1693     $THREADS_LIST
1694     asm
1695     cross_compile
1696     debug
1697     extra_warnings
1698     logging
1699     lto
1700     optimizations
1701     rpath
1702     stripping
1703 "
1704
1705 PATHS_LIST='
1706     bindir
1707     datadir
1708     docdir
1709     incdir
1710     libdir
1711     mandir
1712     prefix
1713     shlibdir
1714 '
1715
1716 CMDLINE_SET="
1717     $PATHS_LIST
1718     ar
1719     arch
1720     as
1721     assert_level
1722     build_suffix
1723     cc
1724     cpu
1725     cross_prefix
1726     cxx
1727     dep_cc
1728     extra_version
1729     host_cc
1730     host_cflags
1731     host_ld
1732     host_ldflags
1733     host_libs
1734     host_os
1735     install
1736     ld
1737     logfile
1738     malloc_prefix
1739     nm
1740     optflags
1741     pkg_config
1742     progs_suffix
1743     random_seed
1744     samples
1745     strip
1746     sysinclude
1747     sysroot
1748     target_exec
1749     target_os
1750     target_path
1751     target_samples
1752     tempprefix
1753     toolchain
1754     valgrind
1755     yasmexe
1756 "
1757
1758 CMDLINE_APPEND="
1759     extra_cflags
1760     extra_cxxflags
1761     host_cppflags
1762 "
1763
1764 # code dependency declarations
1765
1766 # architecture extensions
1767
1768 armv5te_deps="arm"
1769 armv6_deps="arm"
1770 armv6t2_deps="arm"
1771 neon_deps="arm"
1772 vfp_deps="arm"
1773 vfpv3_deps="vfp"
1774
1775 map 'eval ${v}_inline_deps=inline_asm' $ARCH_EXT_LIST_ARM
1776
1777 mipsfpu_deps="mips"
1778 mips32r2_deps="mips"
1779 mipsdspr1_deps="mips"
1780 mipsdspr2_deps="mips"
1781
1782 altivec_deps="ppc"
1783 ppc4xx_deps="ppc"
1784
1785 vis_deps="sparc"
1786
1787 cpunop_deps="i686"
1788 x86_64_select="i686"
1789 x86_64_suggest="fast_cmov"
1790
1791 amd3dnow_deps="mmx"
1792 amd3dnowext_deps="amd3dnow"
1793 mmx_deps="x86"
1794 mmxext_deps="mmx"
1795 sse_deps="mmxext"
1796 sse2_deps="sse"
1797 sse3_deps="sse2"
1798 ssse3_deps="sse3"
1799 sse4_deps="ssse3"
1800 sse42_deps="sse4"
1801 avx_deps="sse42"
1802 fma4_deps="avx"
1803 avx2_deps="avx"
1804
1805 mmx_external_deps="yasm"
1806 mmx_inline_deps="inline_asm"
1807 mmx_suggest="mmx_external mmx_inline"
1808
1809 for ext in $(filter_out mmx $ARCH_EXT_LIST_X86); do
1810     eval dep=\$${ext}_deps
1811     eval ${ext}_external_deps='"${dep}_external"'
1812     eval ${ext}_inline_deps='"${dep}_inline"'
1813     eval ${ext}_suggest='"${ext}_external ${ext}_inline"'
1814 done
1815
1816 aligned_stack_if_any="ppc x86"
1817 fast_64bit_if_any="alpha ia64 mips64 parisc64 ppc64 sparc64 x86_64"
1818 fast_clz_if_any="alpha avr32 mips ppc x86"
1819 fast_unaligned_if_any="ppc x86"
1820
1821 need_memalign="altivec neon sse"
1822
1823 # system capabilities
1824 log2_deps="!libc_msvcrt"
1825
1826 symver_if_any="symver_asm_label symver_gnu_asm"
1827
1828 # threading support
1829 atomics_gcc_if="sync_val_compare_and_swap"
1830 atomics_suncc_if="atomic_cas_ptr machine_rw_barrier"
1831 atomics_win32_if="MemoryBarrier"
1832 atomics_native_if_any="$ATOMICS_LIST"
1833 threads_if_any="$THREADS_LIST"
1834
1835 # subsystems
1836 dct_select="rdft"
1837 error_resilience_select="dsputil"
1838 frame_thread_encoder_deps="encoders threads"
1839 lpc_select="dsputil"
1840 mdct_select="fft"
1841 rdft_select="fft"
1842 mpegaudio_select="mpegaudiodsp"
1843 mpegaudiodsp_select="dct"
1844 mpegvideo_select="dsputil h264chroma hpeldsp videodsp"
1845 mpegvideoenc_select="mpegvideo"
1846
1847 # decoders / encoders
1848 aac_decoder_select="mdct sinewin"
1849 aac_encoder_select="audio_frame_queue mdct sinewin"
1850 aac_latm_decoder_select="aac_decoder aac_latm_parser"
1851 ac3_decoder_select="mdct ac3dsp ac3_parser dsputil"
1852 ac3_encoder_select="mdct ac3dsp dsputil"
1853 ac3_fixed_encoder_select="mdct ac3dsp dsputil"
1854 aic_decoder_select="dsputil golomb"
1855 alac_encoder_select="lpc"
1856 als_decoder_select="dsputil"
1857 amrnb_decoder_select="lsp"
1858 amrwb_decoder_select="lsp"
1859 amv_decoder_select="dsputil hpeldsp exif"
1860 amv_encoder_select="aandcttables"
1861 ape_decoder_select="dsputil"
1862 asv1_decoder_select="dsputil"
1863 asv1_encoder_select="dsputil"
1864 asv2_decoder_select="dsputil"
1865 asv2_encoder_select="dsputil"
1866 atrac1_decoder_select="mdct sinewin"
1867 atrac3_decoder_select="mdct"
1868 atrac3p_decoder_select="mdct sinewin"
1869 avrn_decoder_select="exif"
1870 bink_decoder_select="dsputil hpeldsp"
1871 binkaudio_dct_decoder_select="mdct rdft dct sinewin"
1872 binkaudio_rdft_decoder_select="mdct rdft sinewin"
1873 cavs_decoder_select="dsputil golomb h264chroma videodsp"
1874 cllc_decoder_select="dsputil"
1875 comfortnoise_encoder_select="lpc"
1876 cook_decoder_select="dsputil mdct sinewin"
1877 cscd_decoder_select="lzo"
1878 cscd_decoder_suggest="zlib"
1879 dca_decoder_select="mdct"
1880 dirac_decoder_select="dsputil dwt golomb videodsp"
1881 dnxhd_decoder_select="dsputil"
1882 dnxhd_encoder_select="aandcttables dsputil mpegvideoenc"
1883 dvvideo_decoder_select="dsputil"
1884 dvvideo_encoder_select="dsputil"
1885 dxa_decoder_select="zlib"
1886 eac3_decoder_select="ac3_decoder"
1887 eac3_encoder_select="ac3_encoder"
1888 eamad_decoder_select="aandcttables dsputil mpegvideo"
1889 eatgq_decoder_select="aandcttables"
1890 eatqi_decoder_select="aandcttables error_resilience mpegvideo"
1891 exr_decoder_select="zlib"
1892 ffv1_decoder_select="dsputil golomb rangecoder"
1893 ffv1_encoder_select="dsputil rangecoder"
1894 ffvhuff_decoder_select="dsputil"
1895 ffvhuff_encoder_select="dsputil huffman"
1896 flac_decoder_select="golomb"
1897 flac_encoder_select="dsputil golomb lpc"
1898 flashsv_decoder_select="zlib"
1899 flashsv_encoder_select="zlib"
1900 flashsv2_encoder_select="zlib"
1901 flashsv2_decoder_select="zlib"
1902 flv_decoder_select="h263_decoder"
1903 flv_encoder_select="h263_encoder"
1904 fourxm_decoder_select="dsputil"
1905 fraps_decoder_select="dsputil huffman"
1906 g2m_decoder_select="dsputil zlib"
1907 g729_decoder_select="dsputil"
1908 h261_decoder_select="error_resilience mpegvideo"
1909 h261_encoder_select="aandcttables mpegvideoenc"
1910 h263_decoder_select="error_resilience h263_parser h263dsp mpegvideo"
1911 h263_encoder_select="aandcttables h263dsp mpegvideoenc"
1912 h263i_decoder_select="h263_decoder"
1913 h263p_encoder_select="h263_encoder"
1914 h264_decoder_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
1915 h264_decoder_suggest="error_resilience"
1916 hevc_decoder_select="dsputil golomb videodsp"
1917 huffyuv_decoder_select="dsputil"
1918 huffyuv_encoder_select="dsputil huffman"
1919 iac_decoder_select="dsputil fft mdct sinewin"
1920 imc_decoder_select="dsputil fft mdct sinewin"
1921 indeo3_decoder_select="hpeldsp"
1922 interplay_video_decoder_select="hpeldsp"
1923 jpegls_decoder_select="dsputil golomb hpeldsp exif"
1924 jpegls_encoder_select="golomb"
1925 jv_decoder_select="dsputil"
1926 lagarith_decoder_select="dsputil"
1927 ljpeg_encoder_select="aandcttables mpegvideoenc"
1928 loco_decoder_select="golomb"
1929 mdec_decoder_select="dsputil error_resilience mpegvideo"
1930 metasound_decoder_select="lsp mdct sinewin"
1931 mimic_decoder_select="dsputil hpeldsp"
1932 mjpeg_decoder_select="dsputil hpeldsp exif"
1933 mjpegb_decoder_select="dsputil hpeldsp exif"
1934 mjpeg_encoder_select="aandcttables dsputil mpegvideoenc"
1935 mlp_decoder_select="dsputil mlp_parser"
1936 motionpixels_decoder_select="dsputil"
1937 mp1_decoder_select="mpegaudio"
1938 mp1float_decoder_select="mpegaudio"
1939 mp2_decoder_select="mpegaudio"
1940 mp2float_decoder_select="mpegaudio"
1941 mp3_decoder_select="mpegaudio"
1942 mp3adu_decoder_select="mpegaudio"
1943 mp3adufloat_decoder_select="mpegaudio"
1944 mp3float_decoder_select="mpegaudio"
1945 mp3on4_decoder_select="mpegaudio"
1946 mp3on4float_decoder_select="mpegaudio"
1947 mpc7_decoder_select="dsputil mpegaudiodsp"
1948 mpc8_decoder_select="dsputil mpegaudiodsp"
1949 mpeg_xvmc_decoder_deps="X11_extensions_XvMClib_h"
1950 mpeg_xvmc_decoder_select="mpeg2video_decoder"
1951 mpeg1video_decoder_select="error_resilience mpegvideo"
1952 mpeg1video_encoder_select="aandcttables mpegvideoenc"
1953 mpeg2video_decoder_select="error_resilience mpegvideo"
1954 mpeg2video_encoder_select="aandcttables mpegvideoenc"
1955 mpeg4_decoder_select="h263_decoder mpeg4video_parser"
1956 mpeg4_encoder_select="h263_encoder"
1957 msmpeg4v1_decoder_select="h263_decoder"
1958 msmpeg4v2_decoder_select="h263_decoder"
1959 msmpeg4v2_encoder_select="h263_encoder"
1960 msmpeg4v3_decoder_select="h263_decoder"
1961 msmpeg4v3_encoder_select="h263_encoder"
1962 mss2_decoder_select="error_resilience vc1_decoder"
1963 mxpeg_decoder_select="dsputil hpeldsp exif"
1964 nellymoser_decoder_select="mdct sinewin"
1965 nellymoser_encoder_select="audio_frame_queue mdct sinewin"
1966 nuv_decoder_select="dsputil lzo"
1967 png_decoder_select="zlib"
1968 png_encoder_select="dsputil zlib"
1969 prores_decoder_select="dsputil"
1970 prores_encoder_select="dsputil"
1971 qcelp_decoder_select="lsp"
1972 qdm2_decoder_select="mdct rdft mpegaudiodsp"
1973 ra_144_encoder_select="audio_frame_queue lpc"
1974 ralf_decoder_select="golomb"
1975 rtjpeg_decoder_select="dsputil"
1976 rv10_decoder_select="error_resilience h263_decoder h263dsp"
1977 rv10_encoder_select="h263_encoder"
1978 rv20_decoder_select="error_resilience h263_decoder h263dsp"
1979 rv20_encoder_select="h263_encoder"
1980 rv30_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1981 rv40_decoder_select="error_resilience golomb h264chroma h264pred h264qpel mpegvideo videodsp"
1982 shorten_decoder_select="golomb"
1983 sipr_decoder_select="lsp"
1984 snow_decoder_select="dsputil dwt h264qpel hpeldsp rangecoder"
1985 snow_encoder_select="aandcttables dsputil dwt h264qpel hpeldsp mpegvideoenc rangecoder"
1986 sonic_decoder_select="golomb"
1987 sonic_encoder_select="golomb"
1988 sonic_ls_encoder_select="golomb"
1989 sp5x_decoder_select="dsputil hpeldsp exif"
1990 svq1_decoder_select="hpeldsp"
1991 svq1_encoder_select="aandcttables dsputil hpeldsp mpegvideoenc"
1992 svq3_decoder_select="golomb h264chroma h264dsp h264pred h264qpel hpeldsp mpegvideo videodsp"
1993 svq3_decoder_suggest="error_resilience zlib"
1994 tak_decoder_select="dsputil"
1995 theora_decoder_select="vp3_decoder"
1996 tiff_decoder_suggest="zlib"
1997 tiff_encoder_suggest="zlib"
1998 thp_decoder_select="dsputil hpeldsp exif"
1999 truehd_decoder_select="mlp_parser"
2000 truemotion2_decoder_select="dsputil"
2001 truespeech_decoder_select="dsputil"
2002 tscc_decoder_select="zlib"
2003 twinvq_decoder_select="mdct lsp sinewin"
2004 utvideo_decoder_select="dsputil"
2005 utvideo_encoder_select="dsputil huffman"
2006 vble_decoder_select="dsputil"
2007 vc1_decoder_select="error_resilience h263_decoder h264chroma h264qpel"
2008 vc1image_decoder_select="vc1_decoder"
2009 vorbis_decoder_select="mdct"
2010 vorbis_encoder_select="mdct"
2011 vp3_decoder_select="hpeldsp vp3dsp videodsp"
2012 vp5_decoder_select="h264chroma hpeldsp videodsp vp3dsp"
2013 vp6_decoder_select="h264chroma hpeldsp huffman videodsp vp3dsp"
2014 vp6a_decoder_select="vp6_decoder"
2015 vp6f_decoder_select="vp6_decoder"
2016 vp8_decoder_select="h264pred videodsp"
2017 vp9_decoder_select="videodsp"
2018 webp_decoder_select="vp8_decoder"
2019 wmapro_decoder_select="mdct sinewin"
2020 wmav1_decoder_select="mdct sinewin"
2021 wmav1_encoder_select="mdct sinewin"
2022 wmav2_decoder_select="mdct sinewin"
2023 wmav2_encoder_select="mdct sinewin"
2024 wmavoice_decoder_select="lsp rdft dct mdct sinewin"
2025 wmv1_decoder_select="h263_decoder"
2026 wmv1_encoder_select="h263_encoder"
2027 wmv2_decoder_select="h263_decoder videodsp"
2028 wmv2_encoder_select="h263_encoder"
2029 wmv3_decoder_select="vc1_decoder"
2030 wmv3image_decoder_select="wmv3_decoder"
2031 zerocodec_decoder_select="zlib"
2032 zlib_decoder_select="zlib"
2033 zlib_encoder_select="zlib"
2034 zmbv_decoder_select="zlib"
2035 zmbv_encoder_select="zlib"
2036
2037 # hardware accelerators
2038 crystalhd_deps="libcrystalhd_libcrystalhd_if_h"
2039 dxva2_deps="dxva2api_h"
2040 vaapi_deps="va_va_h"
2041 vda_deps="VideoDecodeAcceleration_VDADecoder_h pthreads"
2042 vda_extralibs="-framework CoreFoundation -framework VideoDecodeAcceleration -framework QuartzCore"
2043 vdpau_deps="vdpau_vdpau_h vdpau_vdpau_x11_h"
2044 xvmc_deps="X11_extensions_XvMClib_h"
2045
2046 h263_vaapi_hwaccel_deps="vaapi"
2047 h263_vaapi_hwaccel_select="h263_decoder"
2048 h263_vdpau_hwaccel_deps="vdpau"
2049 h263_vdpau_hwaccel_select="h263_decoder"
2050 h264_crystalhd_decoder_select="crystalhd h264_mp4toannexb_bsf h264_parser"
2051 h264_dxva2_hwaccel_deps="dxva2"
2052 h264_dxva2_hwaccel_select="h264_decoder"
2053 h264_vaapi_hwaccel_deps="vaapi"
2054 h264_vaapi_hwaccel_select="h264_decoder"
2055 h264_vda_decoder_deps="vda"
2056 h264_vda_decoder_select="h264_decoder"
2057 h264_vda_hwaccel_deps="vda"
2058 h264_vda_hwaccel_select="h264_decoder"
2059 h264_vdpau_decoder_deps="vdpau"
2060 h264_vdpau_decoder_select="h264_decoder"
2061 h264_vdpau_hwaccel_deps="vdpau"
2062 h264_vdpau_hwaccel_select="h264_decoder"
2063 mpeg_vdpau_decoder_deps="vdpau"
2064 mpeg_vdpau_decoder_select="mpeg2video_decoder"
2065 mpeg_xvmc_hwaccel_deps="xvmc"
2066 mpeg_xvmc_hwaccel_select="mpeg2video_decoder"
2067 mpeg1_vdpau_decoder_deps="vdpau"
2068 mpeg1_vdpau_decoder_select="mpeg1video_decoder"
2069 mpeg1_vdpau_hwaccel_deps="vdpau"
2070 mpeg1_vdpau_hwaccel_select="mpeg1video_decoder"
2071 mpeg1_xvmc_hwaccel_deps="xvmc"
2072 mpeg1_xvmc_hwaccel_select="mpeg1video_decoder"
2073 mpeg2_crystalhd_decoder_select="crystalhd"
2074 mpeg2_dxva2_hwaccel_deps="dxva2"
2075 mpeg2_dxva2_hwaccel_select="mpeg2video_decoder"
2076 mpeg2_vaapi_hwaccel_deps="vaapi"
2077 mpeg2_vaapi_hwaccel_select="mpeg2video_decoder"
2078 mpeg2_vdpau_hwaccel_deps="vdpau"
2079 mpeg2_vdpau_hwaccel_select="mpeg2video_decoder"
2080 mpeg2_xvmc_hwaccel_deps="xvmc"
2081 mpeg2_xvmc_hwaccel_select="mpeg2video_decoder"
2082 mpeg4_crystalhd_decoder_select="crystalhd"
2083 mpeg4_vaapi_hwaccel_deps="vaapi"
2084 mpeg4_vaapi_hwaccel_select="mpeg4_decoder"
2085 mpeg4_vdpau_decoder_deps="vdpau"
2086 mpeg4_vdpau_decoder_select="mpeg4_decoder"
2087 mpeg4_vdpau_hwaccel_deps="vdpau"
2088 mpeg4_vdpau_hwaccel_select="mpeg4_decoder"
2089 msmpeg4_crystalhd_decoder_select="crystalhd"
2090 vc1_crystalhd_decoder_select="crystalhd"
2091 vc1_dxva2_hwaccel_deps="dxva2"
2092 vc1_dxva2_hwaccel_select="vc1_decoder"
2093 vc1_vaapi_hwaccel_deps="vaapi"
2094 vc1_vaapi_hwaccel_select="vc1_decoder"
2095 vc1_vdpau_decoder_deps="vdpau"
2096 vc1_vdpau_decoder_select="vc1_decoder"
2097 vc1_vdpau_hwaccel_deps="vdpau"
2098 vc1_vdpau_hwaccel_select="vc1_decoder"
2099 wmv3_crystalhd_decoder_select="crystalhd"
2100 wmv3_dxva2_hwaccel_select="vc1_dxva2_hwaccel"
2101 wmv3_vaapi_hwaccel_select="vc1_vaapi_hwaccel"
2102 wmv3_vdpau_decoder_select="vc1_vdpau_decoder"
2103 wmv3_vdpau_hwaccel_select="vc1_vdpau_hwaccel"
2104
2105 # parsers
2106 h264_parser_select="golomb h264chroma h264dsp h264pred h264qpel videodsp"
2107 hevc_parser_select="hevc_decoder"
2108 mpeg4video_parser_select="error_resilience mpegvideo"
2109 mpegvideo_parser_select="error_resilience mpegvideo"
2110 vc1_parser_select="mpegvideo"
2111
2112 # external libraries
2113 libaacplus_encoder_deps="libaacplus"
2114 libcelt_decoder_deps="libcelt"
2115 libfaac_encoder_deps="libfaac"
2116 libfaac_encoder_select="audio_frame_queue"
2117 libfdk_aac_decoder_deps="libfdk_aac"
2118 libfdk_aac_encoder_deps="libfdk_aac"
2119 libfdk_aac_encoder_select="audio_frame_queue"
2120 libgme_demuxer_deps="libgme"
2121 libgsm_decoder_deps="libgsm"
2122 libgsm_encoder_deps="libgsm"
2123 libgsm_ms_decoder_deps="libgsm"
2124 libgsm_ms_encoder_deps="libgsm"
2125 libilbc_decoder_deps="libilbc"
2126 libilbc_encoder_deps="libilbc"
2127 libmodplug_demuxer_deps="libmodplug"
2128 libmp3lame_encoder_deps="libmp3lame"
2129 libmp3lame_encoder_select="audio_frame_queue"
2130 libopencore_amrnb_decoder_deps="libopencore_amrnb"
2131 libopencore_amrnb_encoder_deps="libopencore_amrnb"
2132 libopencore_amrnb_encoder_select="audio_frame_queue"
2133 libopencore_amrwb_decoder_deps="libopencore_amrwb"
2134 libopenjpeg_decoder_deps="libopenjpeg"
2135 libopenjpeg_encoder_deps="libopenjpeg"
2136 libopus_decoder_deps="libopus"
2137 libopus_encoder_deps="libopus"
2138 libopus_encoder_select="audio_frame_queue"
2139 libquvi_demuxer_deps="libquvi"
2140 libschroedinger_decoder_deps="libschroedinger"
2141 libschroedinger_encoder_deps="libschroedinger"
2142 libshine_encoder_deps="libshine"
2143 libshine_encoder_select="audio_frame_queue"
2144 libspeex_decoder_deps="libspeex"
2145 libspeex_encoder_deps="libspeex"
2146 libspeex_encoder_select="audio_frame_queue"
2147 libstagefright_h264_decoder_deps="libstagefright_h264"
2148 libtheora_encoder_deps="libtheora"
2149 libtwolame_encoder_deps="libtwolame"
2150 libvo_aacenc_encoder_deps="libvo_aacenc"
2151 libvo_aacenc_encoder_select="audio_frame_queue"
2152 libvo_amrwbenc_encoder_deps="libvo_amrwbenc"
2153 libvorbis_decoder_deps="libvorbis"
2154 libvorbis_encoder_deps="libvorbis"
2155 libvorbis_encoder_select="audio_frame_queue"
2156 libvpx_vp8_decoder_deps="libvpx"
2157 libvpx_vp8_encoder_deps="libvpx"
2158 libvpx_vp9_decoder_deps="libvpx"
2159 libvpx_vp9_encoder_deps="libvpx"
2160 libwavpack_encoder_deps="libwavpack"
2161 libwebp_encoder_deps="libwebp"
2162 libx264_encoder_deps="libx264"
2163 libx264rgb_encoder_deps="libx264"
2164 libxavs_encoder_deps="libxavs"
2165 libxvid_encoder_deps="libxvid"
2166 libutvideo_decoder_deps="libutvideo"
2167 libutvideo_encoder_deps="libutvideo"
2168 libzvbi_teletext_decoder_deps="libzvbi"
2169
2170 # demuxers / muxers
2171 ac3_demuxer_select="ac3_parser"
2172 asf_demuxer_select="riffdec"
2173 asf_muxer_select="riffenc"
2174 asf_stream_muxer_select="asf_muxer"
2175 avi_demuxer_select="riffdec"
2176 avi_muxer_select="riffenc"
2177 avisynth_demuxer_deps="avisynth"
2178 avisynth_demuxer_select="riffdec"
2179 caf_demuxer_select="riffdec"
2180 dirac_demuxer_select="dirac_parser"
2181 dts_demuxer_select="dca_parser"
2182 dtshd_demuxer_select="dca_parser"
2183 dxa_demuxer_select="riffdec"
2184 eac3_demuxer_select="ac3_parser"
2185 f4v_muxer_select="mov_muxer"
2186 flac_demuxer_select="flac_parser"
2187 hds_muxer_select="flv_muxer"
2188 hls_muxer_select="mpegts_muxer"
2189 ipod_muxer_select="mov_muxer"
2190 ismv_muxer_select="mov_muxer"
2191 libnut_demuxer_deps="libnut"
2192 libnut_muxer_deps="libnut"
2193 matroska_audio_muxer_select="matroska_muxer"
2194 matroska_demuxer_select="riffdec"
2195 matroska_demuxer_suggest="bzlib lzo zlib"
2196 matroska_muxer_select="riffenc"
2197 mmf_muxer_select="riffenc"
2198 mov_demuxer_select="riffdec"
2199 mov_demuxer_suggest="zlib"
2200 mov_muxer_select="riffenc rtpenc_chain"
2201 mp3_demuxer_select="mpegaudio_parser"
2202 mp4_muxer_select="mov_muxer"
2203 mpegts_muxer_select="adts_muxer latm_muxer"
2204 mpegtsraw_demuxer_select="mpegts_demuxer"
2205 mxf_d10_muxer_select="mxf_muxer"
2206 nut_muxer_select="riffenc"
2207 nuv_demuxer_select="riffdec"
2208 ogg_demuxer_select="golomb"
2209 psp_muxer_select="mov_muxer"
2210 rtp_demuxer_select="sdp_demuxer"
2211 rtpdec_select="asf_demuxer rm_demuxer rtp_protocol mpegts_demuxer mov_demuxer"
2212 rtsp_demuxer_select="http_protocol rtpdec"
2213 rtsp_muxer_select="rtp_muxer http_protocol rtp_protocol rtpenc_chain"
2214 sap_demuxer_select="sdp_demuxer"
2215 sap_muxer_select="rtp_muxer rtp_protocol rtpenc_chain"
2216 sdp_demuxer_select="rtpdec"
2217 smoothstreaming_muxer_select="ismv_muxer"
2218 spdif_muxer_select="aac_parser"
2219 tak_demuxer_select="tak_parser"
2220 tg2_muxer_select="mov_muxer"
2221 tgp_muxer_select="mov_muxer"
2222 vobsub_demuxer_select="mpegps_demuxer"
2223 w64_demuxer_select="wav_demuxer"
2224 w64_muxer_select="wav_muxer"
2225 wav_demuxer_select="riffdec"
2226 wav_muxer_select="riffenc"
2227 webm_muxer_select="riffenc"
2228 wtv_demuxer_select="riffdec"
2229 xmv_demuxer_select="riffdec"
2230 xwma_demuxer_select="riffdec"
2231
2232 # indevs / outdevs
2233 alsa_indev_deps="alsa_asoundlib_h snd_pcm_htimestamp"
2234 alsa_outdev_deps="alsa_asoundlib_h"
2235 bktr_indev_deps_any="dev_bktr_ioctl_bt848_h machine_ioctl_bt848_h dev_video_bktr_ioctl_bt848_h dev_ic_bt8xx_h"
2236 caca_outdev_deps="libcaca"
2237 dshow_indev_deps="IBaseFilter"
2238 dshow_indev_extralibs="-lpsapi -lole32 -lstrmiids -luuid"
2239 dv1394_indev_deps="dv1394"
2240 dv1394_indev_select="dv_demuxer"
2241 fbdev_indev_deps="linux_fb_h"
2242 fbdev_outdev_deps="linux_fb_h"
2243 iec61883_indev_deps="libiec61883"
2244 jack_indev_deps="jack_jack_h sem_timedwait"
2245 lavfi_indev_deps="avfilter"
2246 libcdio_indev_deps="libcdio"
2247 libdc1394_indev_deps="libdc1394"
2248 libv4l2_indev_deps="libv4l2"
2249 openal_indev_deps="openal"
2250 oss_indev_deps_any="soundcard_h sys_soundcard_h"
2251 oss_outdev_deps_any="soundcard_h sys_soundcard_h"
2252 pulse_indev_deps="libpulse"
2253 pulse_outdev_deps="libpulse"
2254 sdl_outdev_deps="sdl"
2255 sndio_indev_deps="sndio_h"
2256 sndio_outdev_deps="sndio_h"
2257 v4l_indev_deps="linux_videodev_h"
2258 v4l2_indev_deps_any="linux_videodev2_h sys_videoio_h"
2259 v4l2_outdev_deps_any="linux_videodev2_h sys_videoio_h"
2260 vfwcap_indev_deps="capCreateCaptureWindow vfwcap_defines"
2261 vfwcap_indev_extralibs="-lavicap32"
2262 xv_outdev_deps="X11_extensions_Xvlib_h XvGetPortAttribute"
2263 xv_outdev_extralibs="-lXv -lX11 -lXext"
2264 x11grab_indev_deps="x11grab"
2265
2266 # protocols
2267 bluray_protocol_deps="libbluray"
2268 ffrtmpcrypt_protocol_deps="!librtmp_protocol"
2269 ffrtmpcrypt_protocol_deps_any="gcrypt nettle openssl"
2270 ffrtmpcrypt_protocol_select="tcp_protocol"
2271 ffrtmphttp_protocol_deps="!librtmp_protocol"
2272 ffrtmphttp_protocol_select="http_protocol"
2273 ftp_protocol_select="tcp_protocol"
2274 gopher_protocol_select="network"
2275 httpproxy_protocol_select="tcp_protocol"
2276 http_protocol_select="tcp_protocol"
2277 https_protocol_select="tls_protocol"
2278 librtmp_protocol_deps="librtmp"
2279 librtmpe_protocol_deps="librtmp"
2280 librtmps_protocol_deps="librtmp"
2281 librtmpt_protocol_deps="librtmp"
2282 librtmpte_protocol_deps="librtmp"
2283 libssh_protocol_deps="libssh"
2284 mmsh_protocol_select="http_protocol"
2285 mmst_protocol_select="network"
2286 rtmp_protocol_deps="!librtmp_protocol"
2287 rtmp_protocol_select="tcp_protocol"
2288 rtmpe_protocol_select="ffrtmpcrypt_protocol"
2289 rtmps_protocol_deps="!librtmp_protocol"
2290 rtmps_protocol_select="tls_protocol"
2291 rtmpt_protocol_select="ffrtmphttp_protocol"
2292 rtmpte_protocol_select="ffrtmpcrypt_protocol ffrtmphttp_protocol"
2293 rtmpts_protocol_select="ffrtmphttp_protocol https_protocol"
2294 rtp_protocol_select="udp_protocol"
2295 sctp_protocol_deps="struct_sctp_event_subscribe"
2296 sctp_protocol_select="network"
2297 srtp_protocol_select="rtp_protocol"
2298 tcp_protocol_select="network"
2299 tls_protocol_deps_any="openssl gnutls"
2300 tls_protocol_select="tcp_protocol"
2301 udp_protocol_select="network"
2302 unix_protocol_deps="sys_un_h"
2303 unix_protocol_select="network"
2304
2305 # filters
2306 aconvert_filter_deps="swresample"
2307 amovie_filter_deps="avcodec avformat"
2308 aresample_filter_deps="swresample"
2309 ass_filter_deps="libass"
2310 asyncts_filter_deps="avresample"
2311 atempo_filter_deps="avcodec"
2312 atempo_filter_select="rdft"
2313 azmq_filter_deps="libzmq"
2314 blackframe_filter_deps="gpl"
2315 boxblur_filter_deps="gpl"
2316 colormatrix_filter_deps="gpl"
2317 cropdetect_filter_deps="gpl"
2318 dctdnoiz_filter_deps="avcodec"
2319 dctdnoiz_filter_select="fft"
2320 delogo_filter_deps="gpl"
2321 deshake_filter_deps="avcodec"
2322 deshake_filter_select="dsputil"
2323 drawtext_filter_deps="libfreetype"
2324 ebur128_filter_deps="gpl"
2325 flite_filter_deps="libflite"
2326 frei0r_filter_deps="frei0r dlopen"
2327 frei0r_filter_extralibs='$ldl'
2328 frei0r_src_filter_deps="frei0r dlopen"
2329 frei0r_src_filter_extralibs='$ldl'
2330 geq_filter_deps="gpl"
2331 histeq_filter_deps="gpl"
2332 hqdn3d_filter_deps="gpl"
2333 interlace_filter_deps="gpl"
2334 kerndeint_filter_deps="gpl"
2335 ladspa_filter_deps="ladspa dlopen"
2336 mcdeint_filter_deps="avcodec gpl"
2337 movie_filter_deps="avcodec avformat"
2338 mp_filter_deps="gpl avcodec swscale inline_asm"
2339 mpdecimate_filter_deps="gpl avcodec"
2340 mptestsrc_filter_deps="gpl"
2341 negate_filter_deps="lut_filter"
2342 perspective_filter_deps="gpl"
2343 resample_filter_deps="avresample"
2344 ocv_filter_deps="libopencv"
2345 owdenoise_filter_deps="gpl"
2346 pan_filter_deps="swresample"
2347 phase_filter_deps="gpl"
2348 pp_filter_deps="gpl postproc"
2349 pullup_filter_deps="gpl"
2350 removelogo_filter_deps="avcodec avformat swscale"
2351 sab_filter_deps="gpl swscale"
2352 scale_filter_deps="swscale"
2353 smartblur_filter_deps="gpl swscale"
2354 showspectrum_filter_deps="avcodec"
2355 showspectrum_filter_select="rdft"
2356 spp_filter_deps="gpl avcodec"
2357 spp_filter_select="fft"
2358 stereo3d_filter_deps="gpl"
2359 subtitles_filter_deps="avformat avcodec libass"
2360 super2xsai_filter_deps="gpl"
2361 tinterlace_filter_deps="gpl"
2362 vidstabdetect_filter_deps="libvidstab"
2363 vidstabtransform_filter_deps="libvidstab"
2364 yadif_filter_deps="gpl"
2365 pixfmts_super2xsai_test_deps="super2xsai_filter"
2366 tinterlace_merge_test_deps="tinterlace_filter"
2367 tinterlace_pad_test_deps="tinterlace_filter"
2368 zmq_filter_deps="libzmq"
2369
2370 # examples
2371 decoding_encoding_example_deps="avcodec avutil"
2372 demuxing_decoding_example_deps="avcodec avformat avutil"
2373 filtering_audio_example_deps="avfilter avcodec avformat avutil"
2374 filtering_video_example_deps="avfilter avcodec avformat avutil"
2375 metadata_example_deps="avformat avutil"
2376 muxing_example_deps="avcodec avformat avutil swscale"
2377 resampling_audio_example_deps="avutil swresample"
2378 scaling_video_example_deps="avutil swscale"
2379 transcode_aac_example_deps="avcodec avformat swresample"
2380
2381 # libraries
2382 avcodec_deps="avutil"
2383 avdevice_deps="avutil avcodec avformat"
2384 avfilter_deps="avutil"
2385 avformat_deps="avutil avcodec"
2386 avresample_deps="avutil"
2387 postproc_deps="avutil gpl"
2388 swscale_deps="avutil"
2389
2390 # programs
2391 ffmpeg_deps="avcodec avfilter avformat swresample"
2392 ffmpeg_select="aformat_filter anull_filter atrim_filter format_filter
2393                null_filter
2394                setpts_filter trim_filter"
2395 ffplay_deps="avcodec avformat swscale swresample sdl"
2396 ffplay_select="rdft crop_filter"
2397 ffprobe_deps="avcodec avformat"
2398 ffserver_deps="avformat fork sarestart"
2399 ffserver_select="ffm_muxer rtp_protocol rtsp_demuxer"
2400 ffserver_extralibs='$ldl'
2401
2402 # documentation
2403 podpages_deps="perl"
2404 manpages_deps="perl pod2man"
2405 htmlpages_deps="perl texi2html"
2406 txtpages_deps="perl makeinfo"
2407 doc_deps_any="manpages htmlpages podpages txtpages"
2408
2409 # default parameters
2410
2411 logfile="config.log"
2412
2413 # installation paths
2414 prefix_default="/usr/local"
2415 bindir_default='${prefix}/bin'
2416 datadir_default='${prefix}/share/ffmpeg'
2417 docdir_default='${prefix}/share/doc/ffmpeg'
2418 incdir_default='${prefix}/include'
2419 libdir_default='${prefix}/lib'
2420 mandir_default='${prefix}/share/man'
2421 shlibdir_default="$libdir_default"
2422
2423 # toolchain
2424 ar_default="ar"
2425 cc_default="gcc"
2426 cxx_default="g++"
2427 host_cc_default="gcc"
2428 cp_f="cp -f"
2429 install="install"
2430 ln_s="ln -s -f"
2431 nm_default="nm -g"
2432 objformat="elf"
2433 pkg_config_default=pkg-config
2434 ranlib="ranlib"
2435 strip_default="strip"
2436 yasmexe_default="yasm"
2437 windres_default="windres"
2438
2439 nogas=":"
2440
2441 # machine
2442 arch_default=$(uname -m)
2443 cpu="generic"
2444
2445 # OS
2446 target_os_default=$(tolower $(uname -s))
2447 host_os=$target_os_default
2448
2449 # configurable options
2450 enable $PROGRAM_LIST
2451 enable $DOCUMENT_LIST
2452 enable $EXAMPLE_LIST
2453 enable $(filter_out avresample $LIBRARY_LIST)
2454 enable stripping
2455
2456 enable asm
2457 enable debug
2458 enable doc
2459 enable optimizations
2460 enable runtime_cpudetect
2461 enable safe_bitstream_reader
2462 enable static
2463 enable swscale_alpha
2464
2465 # Enable hwaccels by default.
2466 enable dxva2 vaapi vdpau xvmc
2467
2468 # build settings
2469 SHFLAGS='-shared -Wl,-soname,$$(@F)'
2470 LIBPREF="lib"
2471 LIBSUF=".a"
2472 FULLNAME='$(NAME)$(BUILDSUF)'
2473 LIBNAME='$(LIBPREF)$(FULLNAME)$(LIBSUF)'
2474 SLIBPREF="lib"
2475 SLIBSUF=".so"
2476 SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'
2477 SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBVERSION)'
2478 SLIBNAME_WITH_MAJOR='$(SLIBNAME).$(LIBMAJOR)'
2479 LIB_INSTALL_EXTRA_CMD='$$(RANLIB) "$(LIBDIR)/$(LIBNAME)"'
2480 SLIB_INSTALL_NAME='$(SLIBNAME_WITH_VERSION)'
2481 SLIB_INSTALL_LINKS='$(SLIBNAME_WITH_MAJOR) $(SLIBNAME)'
2482
2483 asflags_filter=echo
2484 cflags_filter=echo
2485 ldflags_filter=echo
2486
2487 AS_C='-c'
2488 AS_O='-o $@'
2489 CC_C='-c'
2490 CC_E='-E -o $@'
2491 CC_O='-o $@'
2492 CXX_C='-c'
2493 CXX_O='-o $@'
2494 LD_O='-o $@'
2495 LD_LIB='-l%'
2496 LD_PATH='-L'
2497 HOSTCC_C='-c'
2498 HOSTCC_E='-E -o $@'
2499 HOSTCC_O='-o $@'
2500 HOSTLD_O='-o $@'
2501
2502 host_cflags='-O3'
2503 host_cppflags='-D_ISOC99_SOURCE'
2504 host_libs='-lm'
2505 host_cflags_filter=echo
2506 host_ldflags_filter=echo
2507
2508 target_path='$(CURDIR)'
2509
2510 # since the object filename is not given with the -MM flag, the compiler
2511 # is only able to print the basename, and we must add the path ourselves
2512 DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "/^\#.*/d" -e "s,^[[:space:]]*$(*F)\\.o,$(@D)/$(*F).o," > $(@:.o=.d)'
2513 DEPFLAGS='-MM'
2514
2515 # find source path
2516 if test -f configure; then
2517     source_path=.
2518 else
2519     source_path=$(cd $(dirname "$0"); pwd)
2520     echo "$source_path" | grep -q '[[:blank:]]' &&
2521         die "Out of tree builds are impossible with whitespace in source path."
2522     test -e "$source_path/config.h" &&
2523         die "Out of tree builds are impossible with config.h in source dir."
2524 fi
2525
2526 for v in "$@"; do
2527     r=${v#*=}
2528     l=${v%"$r"}
2529     r=$(sh_quote "$r")
2530     FFMPEG_CONFIGURATION="${FFMPEG_CONFIGURATION# } ${l}${r}"
2531 done
2532
2533 find_things(){
2534     thing=$1
2535     pattern=$2
2536     file=$source_path/$3
2537     sed -n "s/^[^#]*$pattern.*([^,]*, *\([^,]*\)\(,.*\)*).*/\1_$thing/p" "$file"
2538 }
2539
2540 ENCODER_LIST=$(find_things  encoder  ENC      libavcodec/allcodecs.c)
2541 DECODER_LIST=$(find_things  decoder  DEC      libavcodec/allcodecs.c)
2542 HWACCEL_LIST=$(find_things  hwaccel  HWACCEL  libavcodec/allcodecs.c)
2543 PARSER_LIST=$(find_things   parser   PARSER   libavcodec/allcodecs.c)
2544 BSF_LIST=$(find_things      bsf      BSF      libavcodec/allcodecs.c)
2545 MUXER_LIST=$(find_things    muxer    _MUX     libavformat/allformats.c)
2546 DEMUXER_LIST=$(find_things  demuxer  DEMUX    libavformat/allformats.c)
2547 OUTDEV_LIST=$(find_things   outdev   OUTDEV   libavdevice/alldevices.c)
2548 INDEV_LIST=$(find_things    indev    _IN      libavdevice/alldevices.c)
2549 PROTOCOL_LIST=$(find_things protocol PROTOCOL libavformat/allformats.c)
2550 FILTER_LIST=$(find_things   filter   FILTER   libavfilter/allfilters.c)
2551
2552 ALL_COMPONENTS="
2553     $BSF_LIST
2554     $DECODER_LIST
2555     $DEMUXER_LIST
2556     $ENCODER_LIST
2557     $FILTER_LIST
2558     $HWACCEL_LIST
2559     $INDEV_LIST
2560     $MUXER_LIST
2561     $OUTDEV_LIST
2562     $PARSER_LIST
2563     $PROTOCOL_LIST
2564 "
2565
2566 for n in $COMPONENT_LIST; do
2567     v=$(toupper ${n%s})_LIST
2568     eval enable \$$v
2569     eval ${n}_if_any="\$$v"
2570 done
2571
2572 enable $ARCH_EXT_LIST
2573
2574 die_unknown(){
2575     echo "Unknown option \"$1\"."
2576     echo "See $0 --help for available options."
2577     exit 1
2578 }
2579
2580 print_3_columns() {
2581     cat | tr ' ' '\n' | sort | pr -r -3 -t
2582 }
2583
2584 show_list() {
2585     suffix=_$1
2586     shift
2587     echo $* | sed s/$suffix//g | print_3_columns
2588     exit 0
2589 }
2590
2591 rand_list(){
2592     IFS=', '
2593     set -- $*
2594     unset IFS
2595     for thing; do
2596         comp=${thing%:*}
2597         prob=${thing#$comp}
2598         prob=${prob#:}
2599         is_in ${comp} $COMPONENT_LIST && eval comp=\$$(toupper ${comp%s})_LIST
2600         echo "prob ${prob:-0.5}"
2601         printf '%s\n' $comp
2602     done
2603 }
2604
2605 do_random(){
2606     action=$1
2607     shift
2608     random_seed=$(awk "BEGIN { srand($random_seed); print srand() }")
2609     $action $(rand_list "$@" | awk "BEGIN { srand($random_seed) } \$1 == \"prob\" { prob = \$2; next } rand() < prob { print }")
2610 }
2611
2612 for opt do
2613     optval="${opt#*=}"
2614     case "$opt" in
2615         --extra-ldflags=*)
2616             add_ldflags $optval
2617         ;;
2618         --extra-libs=*)
2619             add_extralibs $optval
2620         ;;
2621         --disable-devices)
2622             disable $INDEV_LIST $OUTDEV_LIST
2623         ;;
2624         --enable-debug=*)
2625             debuglevel="$optval"
2626         ;;
2627         --disable-programs)
2628             disable $PROGRAM_LIST
2629         ;;
2630         --disable-everything)
2631             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2632         ;;
2633         --disable-all)
2634             map 'eval unset \${$(toupper ${v%s})_LIST}' $COMPONENT_LIST
2635             disable $LIBRARY_LIST $PROGRAM_LIST doc
2636         ;;
2637         --enable-random|--disable-random)
2638             action=${opt%%-random}
2639             do_random ${action#--} $COMPONENT_LIST
2640         ;;
2641         --enable-random=*|--disable-random=*)
2642             action=${opt%%-random=*}
2643             do_random ${action#--} $optval
2644         ;;
2645         --enable-*=*|--disable-*=*)
2646             eval $(echo "${opt%%=*}" | sed 's/--/action=/;s/-/ thing=/')
2647             is_in "${thing}s" $COMPONENT_LIST || die_unknown "$opt"
2648             eval list=\$$(toupper $thing)_LIST
2649             name=$(echo "${optval}" | sed "s/,/_${thing}|/g")_${thing}
2650             list=$(filter "$name" $list)
2651             [ "$list" = "" ] && warn "Option $opt did not match anything"
2652             $action $list
2653         ;;
2654         --enable-?*|--disable-?*)
2655             eval $(echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g')
2656             if is_in $option $COMPONENT_LIST; then
2657                 test $action = disable && action=unset
2658                 eval $action \$$(toupper ${option%s})_LIST
2659             elif is_in $option $CMDLINE_SELECT; then
2660                 $action $option
2661             else
2662                 die_unknown $opt
2663             fi
2664         ;;
2665         --list-*)
2666             NAME="${opt#--list-}"
2667             is_in $NAME $COMPONENT_LIST || die_unknown $opt
2668             NAME=${NAME%s}
2669             eval show_list $NAME \$$(toupper $NAME)_LIST
2670         ;;
2671         --help|-h) show_help
2672         ;;
2673         --fatal-warnings) enable fatal_warnings
2674         ;;
2675         *)
2676             optname="${opt%%=*}"
2677             optname="${optname#--}"
2678             optname=$(echo "$optname" | sed 's/-/_/g')
2679             if is_in $optname $CMDLINE_SET; then
2680                 eval $optname='$optval'
2681             elif is_in $optname $CMDLINE_APPEND; then
2682                 append $optname "$optval"
2683             else
2684                 die_unknown $opt
2685             fi
2686         ;;
2687     esac
2688 done
2689
2690 disabled logging && logfile=/dev/null
2691
2692 echo "# $0 $FFMPEG_CONFIGURATION" > $logfile
2693 set >> $logfile
2694
2695 test -n "$cross_prefix" && enable cross_compile
2696
2697 if enabled cross_compile; then
2698     test -n "$arch" && test -n "$target_os" ||
2699         die "Must specify target arch and OS when cross-compiling"
2700 fi
2701
2702 ar_default="${cross_prefix}${ar_default}"
2703 cc_default="${cross_prefix}${cc_default}"
2704 cxx_default="${cross_prefix}${cxx_default}"
2705 nm_default="${cross_prefix}${nm_default}"
2706 pkg_config_default="${cross_prefix}${pkg_config_default}"
2707 ranlib="${cross_prefix}${ranlib}"
2708 strip_default="${cross_prefix}${strip_default}"
2709 windres_default="${cross_prefix}${windres_default}"
2710
2711 sysinclude_default="${sysroot}/usr/include"
2712
2713 test -n "$valgrind" && toolchain="valgrind-memcheck"
2714
2715 case "$toolchain" in
2716     clang-asan)
2717         cc_default="clang"
2718         add_cflags  -fsanitize=address
2719         add_ldflags -fsanitize=address
2720     ;;
2721     clang-tsan)
2722         cc_default="clang"
2723         add_cflags  -fsanitize=thread -pie
2724         add_ldflags -fsanitize=thread -pie
2725     ;;
2726     gcc-asan)
2727         cc_default="gcc"
2728         add_cflags  -fsanitize=address
2729         add_ldflags -fsanitize=address
2730     ;;
2731     gcc-tsan)
2732         cc_default="gcc"
2733         add_cflags  -fsanitize=thread -pie -fPIC
2734         add_ldflags -fsanitize=thread -pie -fPIC
2735     ;;
2736     valgrind-massif)
2737         target_exec_default=${valgrind:-"valgrind"}
2738         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"
2739     ;;
2740     valgrind-memcheck)
2741         target_exec_default=${valgrind:-"valgrind"}
2742         target_exec_args="--error-exitcode=1 --malloc-fill=0x2a --track-origins=yes --leak-check=full --gen-suppressions=all --suppressions=$source_path/tests/fate-valgrind.supp"
2743     ;;
2744     msvc)
2745         # Check whether the current MSVC version needs the C99 converter.
2746         # From MSVC 2013 (compiler major version 18) onwards, it does actually
2747         # support enough of C99 to build ffmpeg. Default to the new
2748         # behaviour if the regexp was unable to match anything, since this
2749         # successfully parses the version number of existing supported
2750         # versions that require the converter (MSVC 2010 and 2012).
2751         cl_major_ver=$(cl 2>&1 | sed -n 's/.*Version \([[:digit:]]\{1,\}\)\..*/\1/p')
2752         if [ -z "$cl_major_ver" ] || [ $cl_major_ver -ge 18 ]; then
2753             cc_default="cl"
2754         else
2755             cc_default="c99wrap cl"
2756         fi
2757         ld_default="link"
2758         nm_default="dumpbin -symbols"
2759         ar_default="lib"
2760         target_os_default="win32"
2761         # Use a relative path for TMPDIR. This makes sure all the
2762         # ffconf temp files are written with a relative path, avoiding
2763         # issues with msys/win32 path conversion for MSVC parameters
2764         # such as -Fo<file> or -out:<file>.
2765         TMPDIR=.
2766     ;;
2767     icl)
2768         cc_default="icl"
2769         ld_default="xilink"
2770         nm_default="dumpbin -symbols"
2771         ar_default="xilib"
2772         target_os_default="win32"
2773         TMPDIR=.
2774     ;;
2775     gcov)
2776         add_cflags  -fprofile-arcs -ftest-coverage
2777         add_ldflags -fprofile-arcs -ftest-coverage
2778     ;;
2779     hardened)
2780         add_cflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fno-strict-overflow -fstack-protector-all
2781         add_ldflags -Wl,-z,relro -Wl,-z,now
2782     ;;
2783     ?*)
2784         die "Unknown toolchain $toolchain"
2785     ;;
2786 esac
2787
2788 set_default arch cc cxx pkg_config strip sysinclude target_exec target_os yasmexe
2789 enabled cross_compile || host_cc_default=$cc
2790 set_default host_cc
2791
2792 if ! $pkg_config --version >/dev/null 2>&1; then
2793     warn "$pkg_config not found, library detection may fail."
2794     pkg_config=false
2795 fi
2796
2797 exesuf() {
2798     case $1 in
2799         mingw32*|win32|win64|cygwin*|*-dos|freedos|opendos|os/2*|symbian) echo .exe ;;
2800     esac
2801 }
2802
2803 EXESUF=$(exesuf $target_os)
2804 HOSTEXESUF=$(exesuf $host_os)
2805
2806 # set temporary file name
2807 : ${TMPDIR:=$TEMPDIR}
2808 : ${TMPDIR:=$TMP}
2809 : ${TMPDIR:=/tmp}
2810
2811 if [ -n "$tempprefix" ] ; then
2812     mktemp(){
2813         echo $tempprefix.${HOSTNAME}.${UID}
2814     }
2815 elif ! check_cmd mktemp -u XXXXXX; then
2816     # simple replacement for missing mktemp
2817     # NOT SAFE FOR GENERAL USE
2818     mktemp(){
2819         echo "${2%%XXX*}.${HOSTNAME}.${UID}.$$"
2820     }
2821 fi
2822
2823 tmpfile(){
2824     tmp=$(mktemp -u "${TMPDIR}/ffconf.XXXXXXXX")$2 &&
2825         (set -C; exec > $tmp) 2>/dev/null ||
2826         die "Unable to create temporary file in $TMPDIR."
2827     append TMPFILES $tmp
2828     eval $1=$tmp
2829 }
2830
2831 trap 'rm -f -- $TMPFILES' EXIT
2832
2833 tmpfile TMPASM .asm
2834 tmpfile TMPC   .c
2835 tmpfile TMPCPP .cpp
2836 tmpfile TMPE   $EXESUF
2837 tmpfile TMPH   .h
2838 tmpfile TMPO   .o
2839 tmpfile TMPS   .S
2840 tmpfile TMPSH  .sh
2841 tmpfile TMPV   .ver
2842
2843 unset -f mktemp
2844
2845 chmod +x $TMPE
2846
2847 # make sure we can execute files in $TMPDIR
2848 cat > $TMPSH 2>> $logfile <<EOF
2849 #! /bin/sh
2850 EOF
2851 chmod +x $TMPSH >> $logfile 2>&1
2852 if ! $TMPSH >> $logfile 2>&1; then
2853     cat <<EOF
2854 Unable to create and execute files in $TMPDIR.  Set the TMPDIR environment
2855 variable to another directory and make sure that it is not mounted noexec.
2856 EOF
2857     die "Sanity test failed."
2858 fi
2859
2860 ccc_flags(){
2861     for flag; do
2862         case $flag in
2863             -std=c99)           echo -c99                       ;;
2864             -mcpu=*)            echo -arch ${flag#*=}           ;;
2865             -mieee)             echo -ieee                      ;;
2866             -O*|-fast)          echo $flag                      ;;
2867             -fno-math-errno)    echo -assume nomath_errno       ;;
2868             -g)                 echo -g3                        ;;
2869             -Wall)              echo -msg_enable level2         ;;
2870             -Wno-pointer-sign)  echo -msg_disable ptrmismatch1  ;;
2871             -Wl,*)              echo $flag                      ;;
2872             -f*|-W*)                                            ;;
2873             *)                  echo $flag                      ;;
2874         esac
2875    done
2876 }
2877
2878 cparser_flags(){
2879     for flag; do
2880         case $flag in
2881             -Wno-switch)             echo -Wno-switch-enum ;;
2882             -Wno-format-zero-length) ;;
2883             -Wdisabled-optimization) ;;
2884             -Wno-pointer-sign)       echo -Wno-other ;;
2885             *)                       echo $flag ;;
2886         esac
2887     done
2888 }
2889
2890 msvc_common_flags(){
2891     for flag; do
2892         case $flag in
2893             # In addition to specifying certain flags under the compiler
2894             # specific filters, they must be specified here as well or else the
2895             # generic catch all at the bottom will print the original flag.
2896             -Wall)                ;;
2897             -std=c99)             ;;
2898             # Common flags
2899             -fomit-frame-pointer) ;;
2900             -g)                   echo -Z7 ;;
2901             -fno-math-errno)      ;;
2902             -fno-common)          ;;
2903             -fno-signed-zeros)    ;;
2904             -fPIC)                ;;
2905             -mthumb)              ;;
2906             -march=*)             ;;
2907             -lz)                  echo zlib.lib ;;
2908             -lavifil32)           echo vfw32.lib ;;
2909             -lavicap32)           echo vfw32.lib user32.lib ;;
2910             -l*)                  echo ${flag#-l}.lib ;;
2911             *)                    echo $flag ;;
2912         esac
2913     done
2914 }
2915
2916 msvc_flags(){
2917     msvc_common_flags "$@"
2918     for flag; do
2919         case $flag in
2920             -Wall)                echo -W4 -wd4244 -wd4127 -wd4018 -wd4389     \
2921                                        -wd4146 -wd4057 -wd4204 -wd4706 -wd4305 \
2922                                        -wd4152 -wd4324 -we4013 -wd4100 -wd4214 \
2923                                        -wd4554 \
2924                                        -wd4273 ;;
2925         esac
2926     done
2927 }
2928
2929 icl_flags(){
2930     msvc_common_flags "$@"
2931     for flag; do
2932         case $flag in
2933             # Despite what Intel's documentation says -Wall, which is supported
2934             # on Windows, does enable remarks so disable them here.
2935             -Wall)                echo $flag -Qdiag-disable:remark ;;
2936             -std=c99)             echo -Qstd=c99 ;;
2937         esac
2938     done
2939 }
2940
2941 pgi_flags(){
2942     for flag; do
2943         case $flag in
2944             -flto)                echo -Mipa=fast,libopt,libinline,vestigial ;;
2945             -fomit-frame-pointer) echo -Mnoframe ;;
2946             -g)                   echo -gopt ;;
2947             *)                    echo $flag ;;
2948         esac
2949     done
2950 }
2951
2952 suncc_flags(){
2953     for flag; do
2954         case $flag in
2955             -march=*|-mcpu=*)
2956                 case "${flag#*=}" in
2957                     native)                   echo -xtarget=native       ;;
2958                     v9|niagara)               echo -xarch=sparc          ;;
2959                     ultrasparc)               echo -xarch=sparcvis       ;;
2960                     ultrasparc3|niagara2)     echo -xarch=sparcvis2      ;;
2961                     i586|pentium)             echo -xchip=pentium        ;;
2962                     i686|pentiumpro|pentium2) echo -xtarget=pentium_pro  ;;
2963                     pentium3*|c3-2)           echo -xtarget=pentium3     ;;
2964                     pentium-m)          echo -xarch=sse2 -xchip=pentium3 ;;
2965                     pentium4*)          echo -xtarget=pentium4           ;;
2966                     prescott|nocona)    echo -xarch=sse3 -xchip=pentium4 ;;
2967                     *-sse3)             echo -xarch=sse3                 ;;
2968                     core2)              echo -xarch=ssse3 -xchip=core2   ;;
2969                     corei7)           echo -xarch=sse4_2 -xchip=nehalem  ;;
2970                     corei7-avx)       echo -xarch=avx -xchip=sandybridge ;;
2971                     amdfam10|barcelona)        echo -xtarget=barcelona   ;;
2972                     bdver*)                    echo -xarch=avx           ;;
2973                     athlon-4|athlon-[mx]p)     echo -xarch=ssea          ;;
2974                     k8|opteron|athlon64|athlon-fx)
2975                                                echo -xarch=sse2a         ;;
2976                     athlon*)                   echo -xarch=pentium_proa  ;;
2977                 esac
2978                 ;;
2979             -std=c99)             echo -xc99              ;;
2980             -fomit-frame-pointer) echo -xregs=frameptr    ;;
2981             -fPIC)                echo -KPIC -xcode=pic32 ;;
2982             -W*,*)                echo $flag              ;;
2983             -f*-*|-W*|-mimpure-text)                      ;;
2984             -shared)              echo -G                 ;;
2985             *)                    echo $flag              ;;
2986         esac
2987     done
2988 }
2989
2990 tms470_flags(){
2991     for flag; do
2992         case $flag in
2993             -march=*|-mcpu=*)
2994                 case "${flag#*=}" in
2995                     armv7-a|cortex-a*)      echo -mv=7a8 ;;
2996                     armv7-r|cortex-r*)      echo -mv=7r4 ;;
2997                     armv7-m|cortex-m*)      echo -mv=7m3 ;;
2998                     armv6*|arm11*)          echo -mv=6   ;;
2999                     armv5*e|arm[79]*e*|arm9[24]6*|arm96*|arm102[26])
3000                                             echo -mv=5e  ;;
3001                     armv4*|arm7*|arm9[24]*) echo -mv=4   ;;
3002                 esac
3003                 ;;
3004             -mfpu=neon)     echo --float_support=vfpv3 --neon ;;
3005             -mfpu=vfp)      echo --float_support=vfpv2        ;;
3006             -mfpu=vfpv3)    echo --float_support=vfpv3        ;;
3007             -mfpu=vfpv3-d16) echo --float_support=vfpv3d16    ;;
3008             -msoft-float)   echo --float_support=vfplib       ;;
3009             -O[0-3]|-mf=*)  echo $flag                        ;;
3010             -g)             echo -g -mn                       ;;
3011             -pds=*)         echo $flag                        ;;
3012             -D*|-I*)        echo $flag                        ;;
3013             --gcc|--abi=*)  echo $flag                        ;;
3014             -me)            echo $flag                        ;;
3015         esac
3016     done
3017 }
3018
3019 probe_cc(){
3020     pfx=$1
3021     _cc=$2
3022
3023     unset _type _ident _cc_c _cc_e _cc_o _flags _cflags
3024     unset _ld_o _ldflags _ld_lib _ld_path
3025     unset _depflags _DEPCMD _DEPFLAGS
3026     _flags_filter=echo
3027
3028     if $_cc --version 2>&1 | grep -q '^GNU assembler'; then
3029         true # no-op to avoid reading stdin in following checks
3030     elif $_cc -v 2>&1 | grep -q '^gcc.*LLVM'; then
3031         _type=llvm_gcc
3032         gcc_extra_ver=$(expr "$($_cc --version | head -n1)" : '.*\((.*)\)')
3033         _ident="llvm-gcc $($_cc -dumpversion) $gcc_extra_ver"
3034         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3035         _cflags_speed='-O3'
3036         _cflags_size='-Os'
3037     elif $_cc -v 2>&1 | grep -qi ^gcc; then
3038         _type=gcc
3039         gcc_version=$($_cc --version | head -n1)
3040         gcc_basever=$($_cc -dumpversion)
3041         gcc_pkg_ver=$(expr "$gcc_version" : '[^ ]* \(([^)]*)\)')
3042         gcc_ext_ver=$(expr "$gcc_version" : ".*$gcc_pkg_ver $gcc_basever \\(.*\\)")
3043         _ident=$(cleanws "gcc $gcc_basever $gcc_pkg_ver $gcc_ext_ver")
3044         if ! $_cc -dumpversion | grep -q '^2\.'; then
3045             _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3046         fi
3047         _cflags_speed='-O3'
3048         _cflags_size='-Os'
3049     elif $_cc --version 2>/dev/null | grep -q ^icc; then
3050         _type=icc
3051         _ident=$($_cc --version | head -n1)
3052         _depflags='-MMD'
3053         _cflags_speed='-O3'
3054         _cflags_size='-Os'
3055         _cflags_noopt='-O1'
3056     elif $_cc -v 2>&1 | grep -q xlc; then
3057         _type=xlc
3058         _ident=$($_cc -qversion 2>/dev/null | head -n1)
3059         _cflags_speed='-O5'
3060         _cflags_size='-O5 -qcompact'
3061     elif $_cc -V 2>/dev/null | grep -q Compaq; then
3062         _type=ccc
3063         _ident=$($_cc -V | head -n1 | cut -d' ' -f1-3)
3064         _DEPFLAGS='-M'
3065         _cflags_speed='-fast'
3066         _cflags_size='-O1'
3067         _flags_filter=ccc_flags
3068     elif $_cc --vsn 2>/dev/null | grep -q "ARM C/C++ Compiler"; then
3069         test -d "$sysroot" || die "No valid sysroot specified."
3070         _type=armcc
3071         _ident=$($_cc --vsn | head -n1)
3072         armcc_conf="$PWD/armcc.conf"
3073         $_cc --arm_linux_configure                 \
3074              --arm_linux_config_file="$armcc_conf" \
3075              --configure_sysroot="$sysroot"        \
3076              --configure_cpp_headers="$sysinclude" >>$logfile 2>&1 ||
3077              die "Error creating armcc configuration file."
3078         $_cc --vsn | grep -q RVCT && armcc_opt=rvct || armcc_opt=armcc
3079         _flags="--arm_linux_config_file=$armcc_conf --translate_gcc"
3080         as_default="${cross_prefix}gcc"
3081         _depflags='-MMD'
3082         _cflags_speed='-O3'
3083         _cflags_size='-Os'
3084     elif $_cc -version 2>/dev/null | grep -Eq 'TMS470|TI ARM'; then
3085         _type=tms470
3086         _ident=$($_cc -version | head -n1 | tr -s ' ')
3087         _flags='--gcc --abi=eabi -me'
3088         _cc_e='-ppl -fe=$@'
3089         _cc_o='-fe=$@'
3090         _depflags='-ppa -ppd=$(@:.o=.d)'
3091         _cflags_speed='-O3 -mf=5'
3092         _cflags_size='-O3 -mf=2'
3093         _flags_filter=tms470_flags
3094     elif $_cc -v 2>&1 | grep -q clang; then
3095         _type=clang
3096         _ident=$($_cc --version | head -n1)
3097         _depflags='-MMD'
3098         _cflags_speed='-O3'
3099         _cflags_size='-Os'
3100     elif $_cc -V 2>&1 | grep -q Sun; then
3101         _type=suncc
3102         _ident=$($_cc -V 2>&1 | head -n1 | cut -d' ' -f 2-)
3103         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< | sed -e "1s,^.*: ,$@: ," -e "\$$!s,\$$, \\\," -e "1!s,^.*: , ," > $(@:.o=.d)'
3104         _DEPFLAGS='-xM1 -xc99'
3105         _ldflags='-std=c99'
3106         _cflags_speed='-O5'
3107         _cflags_size='-O5 -xspace'
3108         _flags_filter=suncc_flags
3109     elif $_cc -v 2>&1 | grep -q 'PathScale\|Path64'; then
3110         _type=pathscale
3111         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3112         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3113         _cflags_speed='-O2'
3114         _cflags_size='-Os'
3115         _flags_filter='filter_out -Wdisabled-optimization'
3116     elif $_cc -v 2>&1 | grep -q Open64; then
3117         _type=open64
3118         _ident=$($_cc -v 2>&1 | head -n1 | tr -d :)
3119         _depflags='-MMD -MF $(@:.o=.d) -MT $@'
3120         _cflags_speed='-O2'
3121         _cflags_size='-Os'
3122         _flags_filter='filter_out -Wdisabled-optimization|-Wtype-limits|-fno-signed-zeros'
3123     elif $_cc -V 2>&1 | grep -q Portland; then
3124         _type=pgi
3125         _ident="PGI $($_cc -V 2>&1 | awk '/^pgcc/ { print $2; exit }')"
3126         opt_common='-alias=ansi -Mdse -Mlre -Mpre'
3127         _cflags_speed="-O3 -Mautoinline -Munroll=c:4 $opt_common"
3128         _cflags_size="-O2 -Munroll=c:1 $opt_common"
3129         _cflags_noopt="-O"
3130         _flags_filter=pgi_flags
3131     elif $_cc 2>&1 | grep -q Microsoft; then
3132         _type=msvc
3133         _ident=$($cc 2>&1 | head -n1)
3134         _DEPCMD='$(DEP$(1)) $(DEP$(1)FLAGS) $($(1)DEP_FLAGS) $< 2>&1 | awk '\''/including/ { sub(/^.*file: */, ""); gsub(/\\/, "/"); if (!match($$0, / /)) print "$@:", $$0 }'\'' > $(@:.o=.d)'
3135         _DEPFLAGS='$(CPPFLAGS) $(CFLAGS) -showIncludes -Zs'
3136         _cflags_speed="-O2"
3137         _cflags_size="-O1"
3138         if $_cc 2>&1 | grep -q Linker; then
3139             _ld_o='-out:$@'
3140         else
3141             _ld_o='-Fe$@'
3142         fi
3143         _cc_o='-Fo$@'
3144         _cc_e='-P -Fi$@'
3145         _flags_filter=msvc_flags
3146         _ld_lib='lib%.a'
3147         _ld_path='-libpath:'
3148         _flags='-nologo'
3149         _cflags='-D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -Dinline=__inline -FIstdlib.h -Dstrtoll=_strtoi64'
3150         if [ $pfx = hostcc ]; then
3151             append _cflags -Dsnprintf=_snprintf
3152         fi
3153         disable stripping
3154     elif $_cc 2>&1 | grep -q Intel; then
3155         _type=icl
3156         _ident=$($cc 2>&1 | head -n1)
3157         _depflags='-QMMD -QMF$(@:.o=.d) -QMT$@'
3158         # Not only is O3 broken on 13.x+ but it is slower on all previous
3159         # versions (tested) as well.
3160         _cflags_speed="-O2"
3161         _cflags_size="-O1 -Oi" # -O1 without -Oi miscompiles stuff
3162         if $_cc 2>&1 | grep -q Linker; then
3163             _ld_o='-out:$@'
3164         else
3165             _ld_o='-Fe$@'
3166         fi
3167         _cc_o='-Fo$@'
3168         _cc_e='-P'
3169         _flags_filter=icl_flags
3170         _ld_lib='lib%.a'
3171         _ld_path='-libpath:'
3172         # -Qdiag-error to make icl error when seeing certain unknown arguments
3173         _flags='-nologo -Qdiag-error:4044,10157'
3174         # -Qvec- -Qsimd- to prevent miscompilation, -GS for consistency
3175         # with MSVC which enables it by default.
3176         _cflags='-D_USE_MATH_DEFINES -FIstdlib.h -Dstrtoll=_strtoi64 -Qms0 -Qvec- -Qsimd- -GS'
3177         if [ $pfx = hostcc ]; then
3178             append _cflags -Dsnprintf=_snprintf
3179         fi
3180     elif $_cc --version 2>/dev/null | grep -q ^cparser; then
3181         _type=cparser
3182         _ident=$($_cc --version | head -n1)
3183         _depflags='-MMD'
3184         _cflags_speed='-O4'
3185         _cflags_size='-O2'
3186         _flags_filter=cparser_flags
3187     fi
3188
3189     eval ${pfx}_type=\$_type
3190     eval ${pfx}_ident=\$_ident
3191 }
3192
3193 set_ccvars(){
3194     eval ${1}_C=\${_cc_c-\${${1}_C}}
3195     eval ${1}_E=\${_cc_e-\${${1}_E}}
3196     eval ${1}_O=\${_cc_o-\${${1}_O}}
3197
3198     if [ -n "$_depflags" ]; then
3199         eval ${1}_DEPFLAGS=\$_depflags
3200     else
3201         eval ${1}DEP=\${_DEPCMD:-\$DEPCMD}
3202         eval ${1}DEP_FLAGS=\${_DEPFLAGS:-\$DEPFLAGS}
3203         eval DEP${1}FLAGS=\$_flags
3204     fi
3205 }
3206
3207 probe_cc cc "$cc"
3208 cflags_filter=$_flags_filter
3209 cflags_speed=$_cflags_speed
3210 cflags_size=$_cflags_size
3211 cflags_noopt=$_cflags_noopt
3212 add_cflags $_flags $_cflags
3213 cc_ldflags=$_ldflags
3214 set_ccvars CC
3215
3216 probe_cc hostcc "$host_cc"
3217 host_cflags_filter=$_flags_filter
3218 add_host_cflags  $_flags $_cflags
3219 set_ccvars HOSTCC
3220
3221 test -n "$cc_type" && enable $cc_type ||
3222     warn "Unknown C compiler $cc, unable to select optimal CFLAGS"
3223
3224 : ${as_default:=$cc}
3225 : ${dep_cc_default:=$cc}
3226 : ${ld_default:=$cc}
3227 : ${host_ld_default:=$host_cc}
3228 set_default ar as dep_cc ld host_ld windres
3229
3230 probe_cc as "$as"
3231 asflags_filter=$_flags_filter
3232 add_asflags $_flags $_cflags
3233 set_ccvars AS
3234
3235 probe_cc ld "$ld"
3236 ldflags_filter=$_flags_filter
3237 add_ldflags $_flags $_ldflags
3238 test "$cc_type" != "$ld_type" && add_ldflags $cc_ldflags
3239 LD_O=${_ld_o-$LD_O}
3240 LD_LIB=${_ld_lib-$LD_LIB}
3241 LD_PATH=${_ld_path-$LD_PATH}
3242
3243 probe_cc hostld "$host_ld"
3244 host_ldflags_filter=$_flags_filter
3245 add_host_ldflags $_flags $_ldflags
3246 HOSTLD_O=${_ld_o-$HOSTLD_O}
3247
3248 if [ -z "$CC_DEPFLAGS" ] && [ "$dep_cc" != "$cc" ]; then
3249     probe_cc depcc "$dep_cc"
3250     CCDEP=${_DEPCMD:-$DEPCMD}
3251     CCDEP_FLAGS=${_DEPFLAGS:=$DEPFLAGS}
3252     DEPCCFLAGS=$_flags
3253 fi
3254
3255 if $ar 2>&1 | grep -q Microsoft; then
3256     arflags="-nologo"
3257     ar_o='-out:$@'
3258 elif $ar 2>&1 | grep -q 'Texas Instruments'; then
3259     arflags="rq"
3260     ar_o='$@'
3261 elif $ar 2>&1 | grep -q 'Usage: ar.*-X.*any'; then
3262     arflags='-Xany -r -c'
3263     ar_o='$@'
3264 else
3265     arflags="rc"
3266     ar_o='$@'
3267 fi
3268
3269 add_cflags $extra_cflags
3270 add_cxxflags $extra_cxxflags
3271 add_asflags $extra_cflags
3272
3273 if test -n "$sysroot"; then
3274     case "$cc_type" in
3275         gcc|llvm_gcc|clang)
3276             add_cppflags --sysroot="$sysroot"
3277             add_ldflags --sysroot="$sysroot"
3278         ;;
3279         tms470)
3280             add_cppflags -I"$sysinclude"
3281             add_ldflags  --sysroot="$sysroot"
3282         ;;
3283     esac
3284 fi
3285
3286 if test "$cpu" = host; then
3287     enabled cross_compile &&
3288         die "--cpu=host makes no sense when cross-compiling."
3289
3290     case "$cc_type" in
3291         gcc|llvm_gcc)
3292             check_native(){
3293                 $cc $1=native -v -c -o $TMPO $TMPC >$TMPE 2>&1 || return
3294                 sed -n "/cc1.*$1=/{
3295                             s/.*$1=\\([^ ]*\\).*/\\1/
3296                             p
3297                             q
3298                         }" $TMPE
3299             }
3300             cpu=$(check_native -march || check_native -mcpu)
3301         ;;
3302     esac
3303
3304     test "${cpu:-host}" = host &&
3305         die "--cpu=host not supported with compiler $cc"
3306 fi
3307
3308 # Deal with common $arch aliases
3309 case "$arch" in
3310     aarch64|arm64)
3311         arch="aarch64"
3312     ;;
3313     arm*|iPad*|iPhone*)
3314         arch="arm"
3315     ;;
3316     mips*|IP*)
3317         arch="mips"
3318     ;;
3319     parisc*|hppa*)
3320         arch="parisc"
3321     ;;
3322     "Power Macintosh"|ppc*|powerpc*)
3323         arch="ppc"
3324     ;;
3325     s390|s390x)
3326         arch="s390"
3327     ;;
3328     sh4|sh)
3329         arch="sh4"
3330     ;;
3331     sun4u|sparc*)
3332         arch="sparc"
3333     ;;
3334     tilegx|tile-gx)
3335         arch="tilegx"
3336     ;;
3337     i[3-6]86|i86pc|BePC|x86pc|x86_64|x86_32|amd64)
3338         arch="x86"
3339     ;;
3340 esac
3341
3342 is_in $arch $ARCH_LIST || warn "unknown architecture $arch"
3343 enable $arch
3344
3345 # Add processor-specific flags
3346 if enabled aarch64; then
3347
3348     case $cpu in
3349         armv*)
3350             cpuflags="-march=$cpu"
3351         ;;
3352         *)
3353             cpuflags="-mcpu=$cpu"
3354         ;;
3355     esac
3356
3357 elif enabled alpha; then
3358
3359     cpuflags="-mcpu=$cpu"
3360
3361 elif enabled arm; then
3362
3363     check_arm_arch() {
3364         check_cpp_condition stddef.h \
3365             "defined __ARM_ARCH_${1}__ || defined __TARGET_ARCH_${2:-$1}" \
3366             $cpuflags
3367     }
3368
3369     probe_arm_arch() {
3370         if   check_arm_arch 4;        then echo armv4;
3371         elif check_arm_arch 4T;       then echo armv4t;
3372         elif check_arm_arch 5;        then echo armv5;
3373         elif check_arm_arch 5E;       then echo armv5e;
3374         elif check_arm_arch 5T;       then echo armv5t;
3375         elif check_arm_arch 5TE;      then echo armv5te;
3376         elif check_arm_arch 5TEJ;     then echo armv5te;
3377         elif check_arm_arch 6;        then echo armv6;
3378         elif check_arm_arch 6J;       then echo armv6j;
3379         elif check_arm_arch 6K;       then echo armv6k;
3380         elif check_arm_arch 6Z;       then echo armv6z;
3381         elif check_arm_arch 6ZK;      then echo armv6zk;
3382         elif check_arm_arch 6T2;      then echo armv6t2;
3383         elif check_arm_arch 7;        then echo armv7;
3384         elif check_arm_arch 7A  7_A;  then echo armv7-a;
3385         elif check_arm_arch 7R  7_R;  then echo armv7-r;
3386         elif check_arm_arch 7M  7_M;  then echo armv7-m;
3387         elif check_arm_arch 7EM 7E_M; then echo armv7-m;
3388         elif check_arm_arch 8A  8_A;  then echo armv8-a;
3389         fi
3390     }
3391
3392     [ "$cpu" = generic ] && cpu=$(probe_arm_arch)
3393
3394     case $cpu in
3395         armv*)
3396             cpuflags="-march=$cpu"
3397             subarch=$(echo $cpu | sed 's/[^a-z0-9]//g')
3398         ;;
3399         *)
3400             cpuflags="-mcpu=$cpu"
3401             case $cpu in
3402                 cortex-a*)                               subarch=armv7a  ;;
3403                 cortex-r*)                               subarch=armv7r  ;;
3404                 cortex-m*)                 enable thumb; subarch=armv7m  ;;
3405                 arm11*)                                  subarch=armv6   ;;
3406                 arm[79]*e*|arm9[24]6*|arm96*|arm102[26]) subarch=armv5te ;;
3407                 armv4*|arm7*|arm9[24]*)                  subarch=armv4   ;;
3408                 *)                             subarch=$(probe_arm_arch) ;;
3409             esac
3410         ;;
3411     esac
3412
3413     case "$subarch" in
3414         armv5t*)    enable fast_clz                ;;
3415         armv[6-8]*) enable fast_clz fast_unaligned ;;
3416     esac
3417
3418 elif enabled avr32; then
3419
3420     case $cpu in
3421         ap7[02]0[0-2])
3422             subarch="avr32_ap"
3423             cpuflags="-mpart=$cpu"
3424         ;;
3425         ap)
3426             subarch="avr32_ap"
3427             cpuflags="-march=$cpu"
3428         ;;
3429         uc3[ab]*)
3430             subarch="avr32_uc"
3431             cpuflags="-mcpu=$cpu"
3432         ;;
3433         uc)
3434             subarch="avr32_uc"
3435             cpuflags="-march=$cpu"
3436         ;;
3437     esac
3438
3439 elif enabled bfin; then
3440
3441     cpuflags="-mcpu=$cpu"
3442
3443 elif enabled mips; then
3444
3445     cpuflags="-march=$cpu"
3446
3447     case $cpu in
3448         24kc)
3449             disable mipsfpu
3450             disable mipsdspr1
3451             disable mipsdspr2
3452         ;;
3453         24kf*)
3454             disable mipsdspr1
3455             disable mipsdspr2
3456         ;;
3457         24kec|34kc|1004kc)
3458             disable mipsfpu
3459             disable mipsdspr2
3460         ;;
3461         24kef*|34kf*|1004kf*)
3462             disable mipsdspr2
3463         ;;
3464         74kc)
3465             disable mipsfpu
3466         ;;
3467     esac
3468
3469 elif enabled ppc; then
3470
3471     case $(tolower $cpu) in
3472         601|ppc601|powerpc601)
3473             cpuflags="-mcpu=601"
3474             disable altivec
3475         ;;
3476         603*|ppc603*|powerpc603*)
3477             cpuflags="-mcpu=603"
3478             disable altivec
3479         ;;
3480         604*|ppc604*|powerpc604*)
3481             cpuflags="-mcpu=604"
3482             disable altivec
3483         ;;
3484         g3|75*|ppc75*|powerpc75*)
3485             cpuflags="-mcpu=750"
3486             disable altivec
3487         ;;
3488         g4|745*|ppc745*|powerpc745*)
3489             cpuflags="-mcpu=7450"
3490         ;;
3491         74*|ppc74*|powerpc74*)
3492             cpuflags="-mcpu=7400"
3493         ;;
3494         g5|970|ppc970|powerpc970)
3495             cpuflags="-mcpu=970"
3496         ;;
3497         power[3-7]*)
3498             cpuflags="-mcpu=$cpu"
3499         ;;
3500         cell)
3501             cpuflags="-mcpu=cell"
3502             enable ldbrx
3503         ;;
3504         e500mc)
3505             cpuflags="-mcpu=e500mc"
3506             disable altivec
3507         ;;
3508         e500v2)
3509             cpuflags="-mcpu=8548 -mhard-float -mfloat-gprs=double"
3510             disable altivec
3511         ;;
3512         e500)
3513             cpuflags="-mcpu=8540 -mhard-float"
3514             disable altivec
3515         ;;
3516     esac
3517
3518 elif enabled sparc; then
3519
3520     case $cpu in
3521         cypress|f93[04]|tsc701|sparcl*|supersparc|hypersparc|niagara|v[789])
3522             cpuflags="-mcpu=$cpu"
3523             disable vis
3524         ;;
3525         ultrasparc*|niagara[234])
3526             cpuflags="-mcpu=$cpu"
3527         ;;
3528     esac
3529
3530 elif enabled x86; then
3531
3532     case $cpu in
3533         i[345]86|pentium)
3534             cpuflags="-march=$cpu"
3535             disable mmx
3536         ;;
3537         # targets that do NOT support nopl and conditional mov (cmov)
3538         pentium-mmx|k6|k6-[23]|winchip-c6|winchip2|c3)
3539             cpuflags="-march=$cpu"
3540             disable i686
3541         ;;
3542         # targets that do support nopl and conditional mov (cmov)
3543         i686|pentiumpro|pentium[23]|pentium-m|athlon|athlon-tbird|athlon-4|athlon-[mx]p|athlon64*|k8*|opteron*|athlon-fx|core2|corei7*|amdfam10|barcelona|atom|bdver*)
3544             cpuflags="-march=$cpu"
3545             enable i686
3546             enable fast_cmov
3547         ;;
3548         # targets that do support conditional mov but on which it's slow
3549         pentium4|pentium4m|prescott|nocona)
3550             cpuflags="-march=$cpu"
3551             enable i686
3552             disable fast_cmov
3553         ;;
3554     esac
3555
3556 fi
3557
3558 if [ "$cpu" != generic ]; then
3559     add_cflags  $cpuflags
3560     add_asflags $cpuflags
3561 fi
3562
3563 # compiler sanity check
3564 check_exec <<EOF
3565 int main(void){ return 0; }
3566 EOF
3567 if test "$?" != 0; then
3568     echo "$cc is unable to create an executable file."
3569     if test -z "$cross_prefix" && ! enabled cross_compile ; then
3570         echo "If $cc is a cross-compiler, use the --enable-cross-compile option."
3571         echo "Only do this if you know what cross compiling means."
3572     fi
3573     die "C compiler test failed."
3574 fi
3575
3576 add_cppflags -D_ISOC99_SOURCE
3577 add_cxxflags -D__STDC_CONSTANT_MACROS
3578 check_cflags -std=c99
3579 check_cc -D_FILE_OFFSET_BITS=64 <<EOF && add_cppflags -D_FILE_OFFSET_BITS=64
3580 #include <stdlib.h>
3581 EOF
3582 check_cc -D_LARGEFILE_SOURCE <<EOF && add_cppflags -D_LARGEFILE_SOURCE
3583 #include <stdlib.h>
3584 EOF
3585
3586 check_host_cflags -std=c99
3587 check_host_cflags -Wall
3588
3589 check_64bit(){
3590     arch32=$1
3591     arch64=$2
3592     expr=$3
3593     check_code cc "" "int test[2*($expr) - 1]" &&
3594         subarch=$arch64 || subarch=$arch32
3595 }
3596
3597 case "$arch" in
3598     aarch64|alpha|ia64)
3599         spic=$shared
3600     ;;
3601     mips)
3602         check_64bit mips mips64 '_MIPS_SIM > 1'
3603         spic=$shared
3604     ;;
3605     parisc)
3606         check_64bit parisc parisc64 'sizeof(void *) > 4'
3607         spic=$shared
3608     ;;
3609     ppc)
3610         check_64bit ppc ppc64 'sizeof(void *) > 4'
3611         spic=$shared
3612     ;;
3613     sparc)
3614         check_64bit sparc sparc64 'sizeof(void *) > 4'
3615         spic=$shared
3616     ;;
3617     x86)
3618         check_64bit x86_32 x86_64 'sizeof(void *) > 4'
3619         if test "$subarch" = "x86_64"; then
3620             spic=$shared
3621         fi
3622     ;;
3623     ppc)
3624         check_cc <<EOF && subarch="ppc64"
3625         int test[(int)sizeof(char*) - 7];
3626 EOF
3627     ;;
3628 esac
3629
3630 enable $subarch
3631 enabled spic && enable_weak pic
3632
3633 # OS specific
3634 case $target_os in
3635     aix)
3636         SHFLAGS=-shared
3637         add_cppflags '-I\$(SRC_PATH)/compat/aix'
3638         enabled shared && add_ldflags -Wl,-brtl
3639         ;;
3640     haiku)
3641         prefix_default="/boot/common"
3642         network_extralibs="-lnetwork"
3643         host_libs=
3644         ;;
3645     sunos)
3646         SHFLAGS='-shared -Wl,-h,$$(@F)'
3647         enabled x86 && SHFLAGS="-mimpure-text $SHFLAGS"
3648         network_extralibs="-lsocket -lnsl"
3649         # When using suncc to build, the Solaris linker will mark
3650         # an executable with each instruction set encountered by
3651         # the Solaris assembler.  As our libraries contain their own
3652         # guards for processor-specific code, instead suppress
3653         # generation of the HWCAPS ELF section on Solaris x86 only.
3654         enabled_all suncc x86 &&
3655             echo "hwcap_1 = OVERRIDE;" > mapfile &&
3656             add_ldflags -Wl,-M,mapfile
3657         nm_default='nm -P -g'
3658         ;;
3659     netbsd)
3660         disable symver
3661         oss_indev_extralibs="-lossaudio"
3662         oss_outdev_extralibs="-lossaudio"
3663         enabled gcc || check_ldflags -Wl,-zmuldefs
3664         ;;
3665     openbsd|bitrig)
3666         disable symver
3667         SHFLAGS='-shared'
3668         SLIB_INSTALL_NAME='$(SLIBNAME).$(LIBMAJOR).$(LIBMINOR)'
3669         SLIB_INSTALL_LINKS=
3670         oss_indev_extralibs="-lossaudio"
3671         oss_outdev_extralibs="-lossaudio"
3672         ;;
3673     dragonfly)
3674         disable symver
3675         ;;
3676     freebsd)
3677         ;;
3678     bsd/os)
3679         add_extralibs -lpoll -lgnugetopt
3680         strip="strip -d"
3681         ;;
3682     darwin)
3683         gas="gas-preprocessor.pl $cc"
3684         enabled ppc && add_asflags -force_cpusubtype_ALL
3685         SHFLAGS='-dynamiclib -Wl,-single_module -Wl,-install_name,$(SHLIBDIR)/$(SLIBNAME_WITH_MAJOR),-current_version,$(LIBVERSION),-compatibility_version,$(LIBMAJOR)'
3686         enabled x86_32 && append SHFLAGS -Wl,-read_only_relocs,suppress
3687         strip="${strip} -x"
3688         add_ldflags -Wl,-dynamic,-search_paths_first
3689         SLIBSUF=".dylib"
3690         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME).$(LIBVERSION)$(SLIBSUF)'
3691         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME).$(LIBMAJOR)$(SLIBSUF)'
3692         objformat="macho"
3693         enabled x86_64 && objformat="macho64"
3694         enabled_any pic shared ||
3695             { check_cflags -mdynamic-no-pic && add_asflags -mdynamic-no-pic; }
3696         ;;
3697     mingw32*)
3698         if test $target_os = "mingw32ce"; then
3699             disable network
3700         else
3701             target_os=mingw32
3702         fi
3703         LIBTARGET=i386
3704         if enabled x86_64; then
3705             LIBTARGET="i386:x86-64"
3706         elif enabled arm; then
3707             LIBTARGET=arm-wince
3708         fi
3709         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3710         check_ldflags -Wl,--nxcompat
3711         check_ldflags -Wl,--dynamicbase
3712         shlibdir_default="$bindir_default"
3713         SLIBPREF=""
3714         SLIBSUF=".dll"
3715         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3716         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3717         dlltool="${cross_prefix}dlltool"
3718         if check_cmd lib.exe -list; then
3719             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); lib.exe /machine:$(LIBTARGET) /def:$$(@:$(SLIBSUF)=.def) /out:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3720             if enabled x86_64; then
3721                 LIBTARGET=x64
3722             fi
3723         elif check_cmd $dlltool --version; then
3724             SLIB_EXTRA_CMD=-'sed -e "s/ @[^ ]*//" $$(@:$(SLIBSUF)=.orig.def) > $$(@:$(SLIBSUF)=.def); $(DLLTOOL) -m $(LIBTARGET) -d $$(@:$(SLIBSUF)=.def) -l $(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib) -D $(SLIBNAME_WITH_MAJOR)'
3725         fi
3726         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3727         SLIB_INSTALL_LINKS=
3728         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3729         SLIB_INSTALL_EXTRA_LIB='lib$(SLIBNAME:$(SLIBSUF)=.dll.a) $(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3730         SHFLAGS='-shared -Wl,--output-def,$$(@:$(SLIBSUF)=.orig.def) -Wl,--out-implib,$(SUBDIR)lib$(SLIBNAME:$(SLIBSUF)=.dll.a) -Wl,--enable-runtime-pseudo-reloc -Wl,--enable-auto-image-base'
3731         objformat="win32"
3732         ranlib=:
3733         enable dos_paths
3734         ;;
3735     win32|win64)
3736         disable symver
3737         if enabled shared; then
3738             # Link to the import library instead of the normal static library
3739             # for shared libs.
3740             LD_LIB='%.lib'
3741             # Cannot build both shared and static libs with MSVC or icl.
3742             disable static
3743         fi
3744         shlibdir_default="$bindir_default"
3745         SLIBPREF=""
3746         SLIBSUF=".dll"
3747         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3748         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3749         SLIB_CREATE_DEF_CMD='$(SRC_PATH)/compat/windows/makedef $(SUBDIR)lib$(NAME).ver $(OBJS) > $$(@:$(SLIBSUF)=.def)'
3750         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3751         SLIB_INSTALL_LINKS=
3752         SLIB_INSTALL_EXTRA_SHLIB='$(SLIBNAME:$(SLIBSUF)=.lib)'
3753         SLIB_INSTALL_EXTRA_LIB='$(SLIBNAME_WITH_MAJOR:$(SLIBSUF)=.def)'
3754         SHFLAGS='-dll -def:$$(@:$(SLIBSUF)=.def) -implib:$(SUBDIR)$(SLIBNAME:$(SLIBSUF)=.lib)'
3755         objformat="win32"
3756         ranlib=:
3757         enable dos_paths
3758         ;;
3759     cygwin*)
3760         target_os=cygwin
3761         shlibdir_default="$bindir_default"
3762         SLIBPREF="cyg"
3763         SLIBSUF=".dll"
3764         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(FULLNAME)-$(LIBVERSION)$(SLIBSUF)'
3765         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(FULLNAME)-$(LIBMAJOR)$(SLIBSUF)'
3766         SLIB_INSTALL_NAME='$(SLIBNAME_WITH_MAJOR)'
3767         SLIB_INSTALL_LINKS=
3768         SLIB_INSTALL_EXTRA_LIB='lib$(FULLNAME).dll.a'
3769         SHFLAGS='-shared -Wl,--out-implib,$(SUBDIR)lib$(FULLNAME).dll.a'
3770         objformat="win32"
3771         enable dos_paths
3772         enabled shared && ! enabled small && check_cmd $windres --version && enable gnu_windres
3773         ;;
3774     *-dos|freedos|opendos)
3775         network_extralibs="-lsocket"
3776         objformat="coff"
3777         enable dos_paths
3778         add_cppflags -U__STRICT_ANSI__
3779         ;;
3780     linux)
3781         enable dv1394
3782         ;;
3783     irix*)
3784         target_os=irix
3785         ranlib="echo ignoring ranlib"
3786         ;;
3787     os/2*)
3788         strip="lxlite -CS"
3789         ln_s="cp -f"
3790         objformat="aout"
3791         add_cppflags -D_GNU_SOURCE
3792         add_ldflags -Zomf -Zbin-files -Zargs-wild -Zmap
3793         SHFLAGS='$(SUBDIR)$(NAME).def -Zdll -Zomf'
3794         LIBSUF="_s.a"
3795         SLIBPREF=""
3796         SLIBSUF=".dll"
3797         SLIBNAME_WITH_VERSION='$(SLIBPREF)$(NAME)-$(LIBVERSION)$(SLIBSUF)'
3798         SLIBNAME_WITH_MAJOR='$(SLIBPREF)$(shell echo $(NAME) | cut -c1-6)$(LIBMAJOR)$(SLIBSUF)'
3799         SLIB_CREATE_DEF_CMD='echo LIBRARY $(SLIBNAME_WITH_MAJOR) INITINSTANCE TERMINSTANCE > $(SUBDIR)$(NAME).def; \
3800             echo PROTMODE >> $(SUBDIR)$(NAME).def; \
3801             echo CODE PRELOAD MOVEABLE DISCARDABLE >> $(SUBDIR)$(NAME).def; \
3802             echo DATA PRELOAD MOVEABLE MULTIPLE NONSHARED >> $(SUBDIR)$(NAME).def; \
3803             echo EXPORTS >> $(SUBDIR)$(NAME).def; \
3804             emxexp -o $(OBJS) >> $(SUBDIR)$(NAME).def'
3805         SLIB_EXTRA_CMD='emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.a $(SUBDIR)$(NAME).def; \
3806             emximp -o $(SUBDIR)$(LIBPREF)$(NAME)_dll.lib $(SUBDIR)$(NAME).def;'
3807         SLIB_INSTALL_EXTRA_LIB='$(LIBPREF)$(NAME)_dll.a $(LIBPREF)$(NAME)_dll.lib'
3808         enable dos_paths
3809         enable_weak os2threads
3810         ;;
3811     gnu/kfreebsd)
3812         add_cppflags -D_BSD_SOURCE
3813         ;;
3814     gnu)
3815         ;;
3816     qnx)
3817         add_cppflags -D_QNX_SOURCE
3818         network_extralibs="-lsocket"
3819         ;;
3820     symbian)
3821         SLIBSUF=".dll"
3822         enable dos_paths
3823         add_cflags --include=$sysinclude/gcce/gcce.h -fvisibility=default
3824         add_cppflags -D__GCCE__ -D__SYMBIAN32__ -DSYMBIAN_OE_POSIX_SIGNALS
3825         add_ldflags -Wl,--target1-abs,--no-undefined \
3826                     -Wl,-Ttext,0x80000,-Tdata,0x1000000 -shared \
3827                     -Wl,--entry=_E32Startup -Wl,-u,_E32Startup
3828         add_extralibs -l:eexe.lib -l:usrt2_2.lib -l:dfpaeabi.dso \
3829                       -l:drtaeabi.dso -l:scppnwdl.dso -lsupc++ -lgcc \
3830                       -l:libc.dso -l:libm.dso -l:euser.dso -l:libcrt0.lib
3831         ;;
3832     osf1)
3833         add_cppflags -D_OSF_SOURCE -D_POSIX_PII -D_REENTRANT
3834         ;;
3835     minix)
3836         ;;
3837     plan9)
3838         add_cppflags -D_C99_SNPRINTF_EXTENSION  \
3839                      -D_REENTRANT_SOURCE        \
3840                      -D_RESEARCH_SOURCE         \
3841                      -DFD_SETSIZE=96            \
3842                      -DHAVE_SOCK_OPTS
3843         add_compat strtod.o strtod=avpriv_strtod
3844         network_extralibs='-lbsd'
3845         exeobjs=compat/plan9/main.o
3846         disable ffserver
3847         cp_f='cp'
3848         ;;
3849     none)
3850         ;;
3851     *)
3852         die "Unknown OS '$target_os'."
3853         ;;
3854 esac
3855
3856 # determine libc flavour
3857
3858 probe_libc(){
3859     pfx=$1
3860     pfx_no_=${pfx%_}
3861     # uclibc defines __GLIBC__, so it needs to be checked before glibc.
3862     if check_${pfx}cpp_condition features.h "defined __UCLIBC__"; then
3863         eval ${pfx}libc_type=uclibc
3864         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3865     elif check_${pfx}cpp_condition features.h "defined __GLIBC__"; then
3866         eval ${pfx}libc_type=glibc
3867         add_${pfx}cppflags -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600
3868     # MinGW headers can be installed on Cygwin, so check for newlib first.
3869     elif check_${pfx}cpp_condition newlib.h "defined _NEWLIB_VERSION"; then
3870         eval ${pfx}libc_type=newlib
3871         add_${pfx}cppflags -U__STRICT_ANSI__
3872     # MinGW64 is backwards compatible with MinGW32, so check for it first.
3873     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW64_VERSION_MAJOR"; then
3874         eval ${pfx}libc_type=mingw64
3875         if check_${pfx}cpp_condition _mingw.h "__MINGW64_VERSION_MAJOR < 3"; then
3876             add_compat msvcrt/snprintf.o
3877             add_cflags "-include $source_path/compat/msvcrt/snprintf.h"
3878         fi
3879         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3880         eval test \$${pfx_no_}cc_type = "gcc" &&
3881             add_${pfx}cppflags -D__printf__=__gnu_printf__
3882     elif check_${pfx}cpp_condition _mingw.h "defined __MINGW_VERSION"  ||
3883          check_${pfx}cpp_condition _mingw.h "defined __MINGW32_VERSION"; then
3884         eval ${pfx}libc_type=mingw32
3885         check_${pfx}cpp_condition _mingw.h "__MINGW32_MAJOR_VERSION > 3 || \
3886             (__MINGW32_MAJOR_VERSION == 3 && __MINGW32_MINOR_VERSION >= 15)" ||
3887             die "ERROR: MinGW32 runtime version must be >= 3.15."
3888         add_${pfx}cppflags -U__STRICT_ANSI__ -D__USE_MINGW_ANSI_STDIO=1
3889         eval test \$${pfx_no_}cc_type = "gcc" &&
3890             add_${pfx}cppflags -D__printf__=__gnu_printf__
3891     elif check_${pfx}cpp_condition crtversion.h "defined _VC_CRT_MAJOR_VERSION"; then
3892         eval ${pfx}libc_type=msvcrt
3893         # The MSVC 2010 headers (Win 7.0 SDK) set _WIN32_WINNT to
3894         # 0x601 by default unless something else is set by the user.
3895         # This can easily lead to us detecting functions only present
3896         # in such new versions and producing binaries requiring windows 7.0.
3897         # Therefore explicitly set the default to XP unless the user has
3898         # set something else on the command line.
3899         check_${pfx}cpp_condition stdlib.h "defined(_WIN32_WINNT)" ||
3900             add_${pfx}cppflags -D_WIN32_WINNT=0x0502
3901     elif check_${pfx}cpp_condition stddef.h "defined __KLIBC__"; then
3902         eval ${pfx}libc_type=klibc
3903     elif check_${pfx}cpp_condition sys/cdefs.h "defined __BIONIC__"; then
3904         eval ${pfx}libc_type=bionic
3905     elif check_${pfx}cpp_condition sys/brand.h "defined LABELED_BRAND_NAME"; then
3906         eval ${pfx}libc_type=solaris
3907         add_${pfx}cppflags -D__EXTENSIONS__ -D_XOPEN_SOURCE=600
3908     fi
3909 }
3910
3911 probe_libc
3912 test -n "$libc_type" && enable libc_$libc_type
3913 probe_libc host_
3914 test -n "$host_libc_type" && enable host_libc_$host_libc_type
3915
3916 case $libc_type in
3917     bionic)
3918         add_compat strtod.o strtod=avpriv_strtod
3919         ;;
3920     msvcrt)
3921         add_compat strtod.o strtod=avpriv_strtod
3922         add_compat msvcrt/snprintf.o snprintf=avpriv_snprintf   \
3923                                      _snprintf=avpriv_snprintf  \
3924                                      vsnprintf=avpriv_vsnprintf
3925         ;;
3926 esac
3927
3928 # hacks for compiler/libc/os combinations
3929
3930 if enabled_all tms470 libc_glibc; then
3931     CPPFLAGS="-I${source_path}/compat/tms470 ${CPPFLAGS}"
3932     add_cppflags -D__USER_LABEL_PREFIX__=
3933     add_cppflags -D__builtin_memset=memset
3934     add_cppflags -D__gnuc_va_list=va_list -D_VA_LIST_DEFINED
3935     add_cflags   -pds=48    # incompatible redefinition of macro
3936 fi
3937
3938 if enabled_all ccc libc_glibc; then
3939     add_ldflags -Wl,-z,now  # calls to libots crash without this
3940 fi
3941
3942 esc(){
3943     echo "$*" | sed 's/%/%25/g;s/:/%3a/g'
3944 }
3945
3946 echo "config:$arch:$subarch:$cpu:$target_os:$(esc $cc_ident):$(esc $FFMPEG_CONFIGURATION)" >config.fate
3947
3948 check_cpp_condition stdlib.h "defined(__PIC__) || defined(__pic__) || defined(PIC)" && enable_weak pic
3949
3950 set_default $PATHS_LIST
3951 set_default nm
3952
3953 # we need to build at least one lib type
3954 if ! enabled_any static shared; then
3955     cat <<EOF
3956 At least one library type must be built.
3957 Specify --enable-static to build the static libraries or --enable-shared to
3958 build the shared libraries as well. To only build the shared libraries specify
3959 --disable-static in addition to --enable-shared.
3960 EOF
3961     exit 1;
3962 fi
3963
3964 # backward compatibility layer for incompatible_libav/fork_abi
3965 enabled incompatible_fork_abi  && enable incompatible_libav_abi
3966 enabled incompatible_libav_abi && enable incompatible_fork_abi
3967
3968 die_license_disabled() {
3969     enabled $1 || { enabled $2 && die "$2 is $1 and --enable-$1 is not specified."; }
3970 }
3971
3972 die_license_disabled_gpl() {
3973     enabled $1 || { enabled $2 && die "$2 is incompatible with the gpl and --enable-$1 is not specified."; }
3974 }
3975
3976 die_license_disabled gpl frei0r
3977 die_license_disabled gpl libcdio
3978 die_license_disabled gpl libutvideo
3979 die_license_disabled gpl libvidstab
3980 die_license_disabled gpl libx264
3981 die_license_disabled gpl libxavs
3982 die_license_disabled gpl libxvid
3983 die_license_disabled gpl libzvbi
3984 die_license_disabled gpl x11grab
3985
3986 die_license_disabled nonfree libaacplus
3987 die_license_disabled nonfree libfaac
3988 enabled gpl && die_license_disabled_gpl nonfree libfdk_aac
3989 enabled gpl && die_license_disabled_gpl nonfree openssl
3990
3991 die_license_disabled version3 libopencore_amrnb
3992 die_license_disabled version3 libopencore_amrwb
3993 die_license_disabled version3 libvo_aacenc
3994 die_license_disabled version3 libvo_amrwbenc
3995
3996 enabled version3 && { enabled gpl && enable gplv3 || enable lgplv3; }
3997
3998 disabled optimizations || check_cflags -fomit-frame-pointer
3999
4000 enable_weak_pic() {
4001     disabled pic && return
4002     enable pic
4003     add_cppflags -DPIC
4004     case "$target_os" in
4005     mingw*|cygwin*)
4006         ;;
4007     *)
4008         add_cflags -fPIC
4009         ;;
4010     esac
4011     add_asflags  -fPIC
4012 }
4013
4014 enabled pic && enable_weak_pic
4015
4016 check_cc <<EOF || die "Symbol mangling check failed."
4017 int ff_extern;
4018 EOF
4019 sym=$($nm $TMPO | awk '/ff_extern/{ print substr($0, match($0, /[^ \t]*ff_extern/)) }')
4020 extern_prefix=${sym%%ff_extern*}
4021
4022 check_cc <<EOF && enable_weak inline_asm
4023 void foo(void) { __asm__ volatile ("" ::); }
4024 EOF
4025
4026 _restrict=
4027 for restrict_keyword in restrict __restrict__ __restrict; do
4028     check_cc <<EOF && _restrict=$restrict_keyword && break
4029 void foo(char * $restrict_keyword p);
4030 EOF
4031 done
4032
4033 check_cc <<EOF && enable pragma_deprecated
4034 void foo(void) { _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") }
4035 EOF
4036
4037 check_cc <<EOF && enable attribute_packed
4038 struct { int x; } __attribute__((packed)) x;
4039 EOF
4040
4041 check_cc <<EOF && enable attribute_may_alias
4042 union { int x; } __attribute__((may_alias)) x;
4043 EOF
4044
4045 check_cc <<EOF || die "endian test failed"
4046 unsigned int endian = 'B' << 24 |&